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CN104467120A - Equipment to be charged, charging method and device of equipment to be charged, electronic equipment and charging system - Google Patents

Equipment to be charged, charging method and device of equipment to be charged, electronic equipment and charging system Download PDF

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Publication number
CN104467120A
CN104467120A CN201410854998.1A CN201410854998A CN104467120A CN 104467120 A CN104467120 A CN 104467120A CN 201410854998 A CN201410854998 A CN 201410854998A CN 104467120 A CN104467120 A CN 104467120A
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China
Prior art keywords
current value
charger
charging
nominal output
output current
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CN201410854998.1A
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CN104467120B (en
Inventor
陈良金
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Spreadtrum Communications Shanghai Co Ltd
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Spreadtrum Communications Shanghai Co Ltd
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • H01M10/441—Methods for charging or discharging for several batteries or cells simultaneously or sequentially
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The invention discloses equipment to be charged, a charging method and device of the equipment to be charged, electronic equipment and a charging system. The method includes the steps that when a signal, representing a current rated output current value, transmitted by a charger is received, the current rated output current value of the charger is obtained; according to the current rated output current value of the charger, a preset charging current value of the equipment to be charged is adjusted, and charging is performed at an adjusted charging current value. By the adoption of the equipment to be charged, the charging method and device of the equipment to be charged, the electronic equipment and the charging system, under the condition that the output current of the charger is large, the charging capacity of the charger can be sufficiently utilized for achieving rapid charging.

Description

Charging equipment and charging method, device, electronic equipment and charging system
Technical field
The present invention relates to charging field, particularly relate to a kind of charging equipment and charging method, device, electronic equipment and charging system.
Background technology
In existing GB charger, the output voltage of charger is 5V, and output current is then different and different according to the nominal value of charger, is generally between 300mA ~ 1800mA.
Existing USB GB charger generally comprises four ports: VBUS port, DP port, DM port and GND port, and wherein, VBUS port is the output port of charger, and DP port and DM port are two signal ports of USB interface.By charger to charging equipment, such as, when the mobile terminals such as mobile phone charge, by detecting DM and the DP port of charger, whether short circuit judges whether current charger is GB charger to charging equipment.When determining that current charger is GB charger, charging equipment is according to the fixing charging current for charging preset.
But due to the size of the no matter charging current of charger in such scheme, charging equipment all adopts fixing charging current to charge, and in some cases, cannot make full use of the charging ability of charger.
Summary of the invention
The problem that the embodiment of the present invention solves is when output current of charger is larger, how to make full use of the charging ability of charger, realizes quick charge.
For solving the problem, the embodiment of the present invention provides a kind of charging method of charging equipment, comprising:
When receiving the signal of the expression current nominal output current value that charger sends, obtain the current nominal output current value of described charger;
According to the current nominal output current value of described charger, adjust the preset charged current value of described charging equipment, and charge with the charging current value after adjustment.
Optionally, the signal that described charger sends is a PWM ripple, and the duty ratio of a described PWM ripple is corresponding with the current nominal output current value of described charger; Described acquisition described charger current nominal output current value, comprising: the duty ratio obtaining a described PWM ripple, according to the current value preset and the corresponding relation of PWM ripple duty ratio, obtains the current nominal output current value of described charger.
Optionally, the described current nominal output current value according to described charger, adjusts the preset charged current value of described charging equipment, comprising:
According to the current nominal output current value of described charger and the current output voltage value of described charger, calculate the current output power value of described charger;
According to the power supply conversion efficiency of the power-switching circuit in described charging equipment, calculate the effective input power being input to described charging equipment;
According to the magnitude of voltage of the power-switching circuit in effective input power of described charging equipment and described charging equipment, calculate the charging current value that described current nominal output current value is corresponding, and described preset charged current value is adjusted to charging current value corresponding to described current nominal output current value.
Optionally, the described current nominal output current value according to described charger, adjusts the preset charged current value of described charging equipment, comprising: the current nominal output current value preset charged current value of described charging equipment being adjusted to described charger.
Optionally, described charging equipment comprises following at least one: mobile terminal, charger baby.
For solving the problem, the embodiment of the present invention additionally provides a kind of device to be charged, comprising:
First acquiring unit, for when receiving the signal of the expression current nominal output current value that charger sends, obtains the current nominal output current value of described charger;
First adjustment unit, for the current nominal output current value according to described charger, adjusts the preset charged current value of described charging equipment;
First charhing unit, charges for the charging current value after adopting described first adjustment unit adjustment.
Optionally, described first acquiring unit is used for when receiving a PWM ripple signal of the expression current nominal output current value that charger sends, obtain the duty ratio of a described PWM ripple, according to the current value preset and the corresponding relation of PWM ripple duty ratio, obtain the current nominal output current value of described charger.
Optionally, described first adjustment unit is used for:
According to the current nominal output current value of described charger and the current output voltage value of described charger, calculate the current output power value of described charger;
According to the power supply conversion efficiency of the power-switching circuit in described charging equipment, calculate the effective input power being input to described charging equipment;
According to the magnitude of voltage of the power-switching circuit in effective input power of described charging equipment and described charging equipment, calculate the charging current value that described current nominal output current value is corresponding, and described preset charged current value is adjusted to the charging current value of described correspondence.
Optionally, described first adjustment unit is used for the preset charged current value of described charging equipment to be adjusted to described current nominal output current value.
Optionally, described charging equipment comprises following at least one: mobile terminal, charger baby.
The embodiment of the present invention additionally provides a kind of charging equipment, comprising: PWM testing circuit, controller, charging circuit and battery, wherein:
Described PWM testing circuit, be suitable for the PWM ripple receiving charger transmission, and obtain the duty ratio of a described PWM ripple, the duty ratio of a described PWM ripple is corresponding with the current nominal output current value of described charger;
Described controller, be suitable for the duty ratio according to a described PWM ripple, obtain the current nominal output current value of the described charger corresponding with described duty ratio, and according to the current nominal output current value of described charger, adjust the preset charged current value of described charging equipment, and to described charging circuit sending controling instruction;
Described charging circuit, is suitable for according to described control command, produces the electric current corresponding with the charging current value after adjustment and inputs to described battery.
Optionally, described PWM testing circuit comprises: sample circuit, is suitable for sampling to a described PWM ripple, to obtain the duty ratio of a described PWM ripple.
Optionally, described sample circuit comprises adc circuit.
Optionally, described PWM testing circuit comprises: low pass filter; With adc circuit or the high frequency clock circuit of described low pass filter coupled.
Optionally, described low pass filter comprise following any one: low-pass first order filter, second-order low-pass filter.
The embodiment of the present invention additionally provides a kind of charging system, comprises charger and charging equipment, wherein:
Described charging equipment, is suitable for, when receiving the signal of the expression current nominal output current value that charger sends, obtaining the current nominal output current value of described charger; According to the current nominal output current value of described charger, adjust the preset charged current value of described charging equipment, and charge with the charging current value after adjustment;
Described charger, be suitable for sending to described charging equipment the signal representing current nominal output current value, described charging equipment is made to obtain described current nominal output current value, according to the current nominal output current value of described charger, adjust the preset charged current value of described charging equipment, and charge with the charging current value after adjustment.
Compared with prior art, the technical scheme of the embodiment of the present invention has the following advantages:
Charging equipment is by obtaining the current nominal output current value of charger, charging current is adjusted, instead of only charge with fixing preset charged current value, when the charging current value that the current nominal output current value of charger is corresponding is greater than the charging current of fixing of charging equipment, the charging current of adjustment charging equipment, the charging current value after adjusting is made to be greater than fixing preset charged current value, the output-current rating value of charger can be made full use of, thus realize quick charge.
Accompanying drawing explanation
Fig. 1 is the charging method flow chart of a kind of charging equipment in the embodiment of the present invention;
Fig. 2 is the structural representation of the device a kind of to be charged in the embodiment of the present invention;
Fig. 3 is the structural representation of a kind of charging equipment in the embodiment of the present invention;
Fig. 4 is the circuit structure diagram of a kind of PWM testing circuit in the embodiment of the present invention;
Fig. 5 is the structural representation of the another kind of charging equipment in the embodiment of the present invention;
Fig. 6 is the flow chart of a kind of charging method in the embodiment of the present invention;
Fig. 7 is the flow chart of the another kind of charging method in the embodiment of the present invention;
Fig. 8 is the structural representation of a kind of charging device in the embodiment of the present invention;
Fig. 9 is the flow chart of another charging method in the embodiment of the present invention;
Figure 10 is the structural representation of a kind of charging system in the embodiment of the present invention.
Embodiment
In the prior art, adopt USB charger be charging equipment charge time, charging equipment is according to the fixing charging current value charging preset.But, in actual applications, if the output current of charger end is larger, such as output current is 1800mA, and the preset charged electric current of charging equipment is 600mA, and namely the output-current rating value of charger is greater than the charging current value of charging equipment acquiescence, at this moment, charging device still charges with the charging current of acquiescence, and cannot make full use of the output-current rating ability of charger, charge efficiency is lower.
In embodiments of the present invention, charging equipment is by obtaining the current nominal output current value of charger, charging current is adjusted, instead of only charge with fixing preset charged current value, when the charging current value that the current nominal output current value of charger is corresponding is greater than the charging current of fixing of charging equipment, the charging current of adjustment charging equipment, the charging current value after adjusting is made to be greater than fixing preset charged current value, the output-current rating value of charger can be made full use of, thus realize quick charge.
For enabling above-mentioned purpose, the feature and advantage of the embodiment of the present invention more become apparent, below in conjunction with accompanying drawing, specific embodiments of the invention are described in detail.
Embodiments provide a kind of charging method of charging equipment, with reference to Fig. 1, be described in detail below by way of concrete steps.
Step S101, when receiving the signal of the expression current nominal output current value that charger sends, obtains the current nominal output current value of described charger.
In concrete enforcement, charging equipment can the equipment of device of storage of electrical energy for any including, and the device of storage of electrical energy can be battery, and charger can for comprising arbitrarily the charger of USB interface.Such as, charging equipment can be mobile phone terminal, panel computer etc., and also can be that charger baby, portable power source etc. can the equipment of storage of electrical energy, can also be other equipment, can the device of storage of electrical energy as long as comprise, and does not repeat herein.
In concrete enforcement, charger is when to charging equipment output current, and the current value of output is the output-current rating value of charger to the maximum.Charger, while charging equipment output current, can send to charging equipment the signal representing current nominal output current value, make charging equipment upon receipt of the signal, can obtain the current nominal output current value of charger.The signal that charger sends to charging equipment can signal to include numerous forms, as long as meet the current nominal output current value that charging equipment can obtain charger.
In embodiments of the present invention, when charger is in holding state, the DP port of charger and DM port short circuit.Charger detects the magnitude of voltage on DP port in real time, when detecting that the duration of the magnitude of voltage on DP port higher than preset voltage value reaches preset duration, DM port and DP port disconnect by charger, are sent the signal representing current nominal output current value by DM port to charging equipment.
In an embodiment of the present invention, charger detects the magnitude of voltage on DP port in real time.When charging equipment is connected with charger, charging equipment sends signal to charger, such as, send the mode of request signal or enable signal, the voltage on the DP port of charger is raised.When the duration that the voltage on DP port is elevated to Vth reaches preset duration, the DM port of short circuit and DP port disconnect by charger, and are sent the signal representing current nominal output current value to charging equipment by DM port.
Charging equipment, after the signal receiving the expression current nominal output current value that charger sends, can obtain the current nominal output current value of charger, to perform step S102.The signal that charger sends to charging equipment can signal to include numerous forms, as long as meet the current nominal output current value that charging equipment can obtain charger.
In an embodiment of the present invention, the signal of the expression current nominal output current value of charger transmission is a PWM ripple of certain duty ratio.PWM ripple generating apparatus is set in charger, according to the current value preset and the corresponding relation of PWM ripple duty ratio, the current nominal output current value of charger is converted to a PWM ripple of duty ratio corresponding, and a PWM ripple is sent to charging equipment.
In an embodiment of the present invention, the PWM ripple generating apparatus arranged in charger comprises comparator and saw-toothed wave generator.Comparator, by comparing the magnitude of voltage of two input inputs, exports corresponding high level or low level.According to the corresponding relation of current value and the PWM ripple duty ratio preset, the duty ratio of the PWM ripple that the current nominal output current value of acquisition charger is corresponding.Saw-toothed wave generator generates sawtooth waveforms and is input to the first input end of comparator, at the second end input voltage value V1 of comparator, by comparing the magnitude of voltage that V1 is corresponding with sawtooth waveforms in the same time mutually, exports high level or low level.By adjustment magnitude of voltage V1, namely produce a PWM ripple of duty ratio corresponding by comparator.
In an embodiment of the present invention, the corresponding relation of magnitude of voltage V1 and PWM ripple duty ratio can be set up in advance, such as, PWM ripple duty ratio corresponding during magnitude of voltage V1=1.6V is 80%, PWM ripple duty ratio corresponding during magnitude of voltage V1=1.2V is 60% etc., thus, when the duty ratio of a PWM ripple corresponding to the output-current rating value getting current charger is 80%, the magnitude of voltage V1=1.6V of the second input input of comparator, thus generate the PWM ripple that duty ratio is 80%.
In other embodiments of the present invention, the PWM ripple generating apparatus in charger also can be that other can generate the device of PWM ripple, does not repeat herein.
PWM wave receiving device can be set at charging equipment end, receive a PWM ripple of charger transmission at PWM wave receiving device after, obtain the duty ratio that a PWM ripple is corresponding, according to the current value preset and the corresponding relation of PWM ripple duty ratio, the current nominal output current value of charger can be obtained.
The maximum current bearing capacity of setting generic USB interface is maxoutA, be the current value of 100% correspondence as PWM ripple duty ratio using maxoutA, charger current nominal output current value is maxA, and maxA < maxoutA, be then (maxA/maxoutA) × 100% by the duty ratio of PWM ripple corresponding for current nominal output current value.Charging equipment, after the PWM ripple receiving charger transmission, can obtain the duty ratio of the PWM ripple received, the corresponding relation of the current value preset according to charger end and PWM ripple duty ratio, can know the current nominal output current value of charger.
Such as, the maximum current bearing capacity of generic USB interface is 2.5A, charger current nominal output current value and load current value are 2A, then the duty ratio of the PWM ripple that current nominal output current value is corresponding is: 2/2.5 × 100%=80%, and namely charger sends to charging equipment the PWM ripple that duty ratio is 80%.Charging equipment is after receiving the PWM ripple that charger sends, and the duty ratio getting PWM ripple is 80%, according to the current value preset and the corresponding relation of PWM ripple duty ratio, can know that charger current nominal output current value is 2A.
In other embodiments of the present invention, PWM ripple duty ratio corresponding to charger current nominal output current value can also be obtained by other compute mode, not repeat herein.
Step S102, according to the current nominal output current value of described charger, adjusts the preset charged electric current of described charging equipment, and charges with the charging current value after adjustment.
In concrete enforcement, charging equipment, after the current nominal output current value getting charger, according to factors such as the circuit design of charging equipment, can calculate the charging current value I corresponding with current nominal output current value cHG.
In embodiments of the present invention, the charging modes for charging equipment is different, when the output current value of charger is identical, and the charging current I of corresponding charging equipment cHGcan not be identical.In actual applications, the charging modes of charging equipment can be switching regulator charging or linear-charging.When the charging modes of charging equipment is linear-charging, I cHGequal with the output current value of charger.When the charging modes of charging equipment is switching regulator charging, I cHGrelevant to the conversion efficiency of the DCDC in charging equipment.
At the charging current value I that the output-current rating value getting charger is corresponding cHGafterwards, can by I cHGwith the preset charged current value I of charging equipment 0compare.Work as I cHG> I 0time, the preset charged electric current of charging equipment can be adjusted to I cHGor be slightly less than I cHG, and with I cHGor be slightly less than I cHGcurrent value charge, thus realize quick charge.Work as I cHG≤ I 0time, can with I cHGor be slightly less than I cHGcurrent value charge, protection charger, and quick charge in situation as much as possible.
In an embodiment of the present invention, be charged as example with existing switching regulator, the charging current of adjustment charging equipment is described.
Charging equipment obtains charger current nominal output current value I vBUSand current output voltage value U vBUS, calculating charger current output power value is Pc=I vBUS× U vBUS.According to the design conditions of charging equipment, such as, in the charging equipment efficiency eta of DCDC, according to P=I cHG× U dCDC=I vBUS× U vBUS× η, can calculate the charging current value I of the charging equipment corresponding with current charger output-current rating value cHG.
Such as, charger current nominal output current value I vBUS=2A, charger current output voltage value U vBUS=5V, then charger current output power value is Pc=I vBUS× U vBUS=10W.Efficiency eta=80% of DCDC in charging equipment, the preset charged current value I of charging equipment 0=600mA.According to P=I cHG× U dCDC=I vBUS× U vBUS× η, can calculate the charging current value I corresponding with current charger output-current rating value cHG.In actual applications, U dCDCcan be adjusted by the charge loop of charging equipment, adjust to and can maintain corresponding charging current.Such as, U dCDCcan obtain by measuring, such as, the U got dCDC=4V, then I cHG=2A, I cHG=2A > I 0=600mA, is adjusted to 2A by the charging current value of charging equipment from preset charged current value.
As can be seen here, charging equipment is by obtaining the current nominal output current value of charger, charging current is adjusted, instead of only charge with fixing preset charged current value, when the charging current value that the current nominal output current value of charger is corresponding is greater than the charging current of fixing of charging equipment, the charging current of adjustment charging equipment, the charging current value after adjusting is made to be greater than fixing preset charged current value, the output-current rating of charger can be made full use of, thus realize quick charge.
In embodiments of the present invention, when the charging modes of charging equipment is switching regulator charging, can also send to charger the signal representing current demand magnitude of voltage, make charger export the voltage with demand voltage value, thus realize charging more fast.
In concrete enforcement, the principle that the output voltage of adjustment charger can realize charging more fast is:
Corresponding to the charger that power output is variable, when adjusting the output voltage of charger, the power output of charger adjusts.When being heightened by the output voltage of charger, the corresponding increase of power output of charger, the power that correspondingly charging equipment receives increases.Due to the power proportional that charging current and the charging equipment of charging equipment receive, therefore, the increase of the power output of charger causes the charging current of charging equipment to increase, thus realizes quick charge.
Corresponding to the charger that power output is fixing, the output voltage of adjustment charger, although the power output of charger does not change, according to P=I 2r, the power consumed on the equivalent electric circuit of electric power transfer approach reduces, and means that the effective output of charger increases, and correspondingly, charging equipment is that the power of battery charging increases, also i.e. charging current also corresponding increase, thus realizes quick charge.
Therefore, carry out at charging equipment in the process of charging, sent the request signal of adjustment magnitude of voltage by charging equipment to charger, improve the output voltage of charger, thus can realize charging more fast.
In an embodiment of the present invention, the signal of the expression demand voltage value of charging equipment transmission is the 2nd PWM ripple of certain duty ratio.PWM ripple generating apparatus is set in charging equipment, according to the magnitude of voltage preset and the corresponding relation of PWM ripple duty ratio, the demand voltage value of charging equipment is converted to the 2nd PWM ripple of duty ratio corresponding, and the 2nd PWM ripple is sent to charger.
In an embodiment of the present invention, the PWM ripple generating apparatus arranged in charging equipment comprises comparator, and comparator, by comparing the magnitude of voltage of two input inputs, exports corresponding high level or low level.According to the corresponding relation of magnitude of voltage and the PWM ripple duty ratio preset, the duty ratio of the 2nd PWM ripple that the demand voltage value of acquisition charging equipment is corresponding.The first input end input sawtooth waveforms of comparator, the second input inputs a corresponding magnitude of voltage V2, by comparing the magnitude of voltage that V2 is corresponding with sawtooth waveforms in the same time mutually, exports high level or low level.By adjustment magnitude of voltage V2, namely produce the 2nd PWM ripple of duty ratio corresponding by comparator.
In an embodiment of the present invention, the corresponding relation of magnitude of voltage V2 and PWM ripple duty ratio can be set up in advance, such as, PWM ripple duty ratio corresponding during magnitude of voltage V2=1.6V is 80%, PWM ripple duty ratio corresponding during magnitude of voltage V1=1.2V is 60% etc., thus, when the duty ratio of a PWM ripple corresponding to the demand voltage value getting charging equipment is 60%, the magnitude of voltage V2=1.2V of the second input input of comparator, thus generate the 2nd PWM ripple that duty ratio is 60%.
PWM wave receiving device can be set at charger end, after PWM wave receiving device receives the 2nd PWM ripple of charging equipment transmission, the duty ratio that the 2nd PWM ripple is corresponding can be obtained, according to the corresponding relation of magnitude of voltage and PWM ripple duty ratio, the demand voltage value of charging equipment can be obtained.
In an embodiment of the present invention, the 2nd PWM ripple signal that the PWM ripple generating apparatus that charging equipment end is arranged generates can be exported by the DP port of charging inlet, and the PWM wave receiving device of charger end can receive the 2nd PWM ripple of PWM ripple generating apparatus output on the DP port of USB charger.
Such as, the demand voltage value of charging equipment is 12V, and from the corresponding relation of the magnitude of voltage preset and PWM ripple duty ratio, the PWM ripple duty ratio that 12V is corresponding is 48%.Charging equipment sends to charger the PWM ripple that a duty ratio is 48%.Charger is after the 2nd PWM ripple receiving charging equipment transmission, and the duty ratio being obtained PWM ripple by PWM ripple receiver is 48%, can know that the demand voltage value of charging equipment is 12V.
Charger, after getting the demand voltage value of charging equipment, first can judge whether the demand voltage value of charging equipment is within the operating voltage range of charger.When the demand voltage value of charging equipment is within the rated operational voltage scope of charger, output voltage can be adjusted to the demand voltage of charging equipment by charger.
Such as, the rated operational voltage of charger is 20V, and the demand voltage value of the charging equipment received is 12V, and because demand voltage value is within the rated operational voltage scope of charger, therefore current output voltage can be adjusted to 12V by charger.
When the demand voltage value of charging equipment is greater than within the rated operational voltage scope of charger, charger can not adjust output voltage, also output voltage can be adjusted to rated operational voltage.
Such as, the rated operational voltage of charger is 20V, the demand voltage value of the charging equipment received is 25V, due to 25V > 20V, namely the demand voltage value of charging equipment is greater than the rated operational voltage of charger, therefore current output voltage can be adjusted to rated operational voltage by charger, is adjusted to 20V by current output voltage.
Visible, sent the signal representing demand voltage by charging equipment to charger, adjust the output voltage of charger, make charger export higher voltage, the power output of charger increases, and the power be namely input in charging equipment increases.And the charging current of charging equipment and the power proportional be input in charging equipment, therefore the power output increase of charger can improve charging current, realizes charging more fast.
With reference to Fig. 2, embodiments provide a kind of device to be charged 20, comprising: the first acquiring unit 201, first adjustment unit 202 and the first charhing unit 203, wherein:
First acquiring unit 201, for when receiving the signal of the expression current nominal output current value that charger sends, obtains the current nominal output current value of described charger;
First adjustment unit 202, for the current nominal output current value according to described charger, adjusts the preset charged current value of described charging equipment;
First charhing unit 203, the charging current value after adjusting for adopting described first adjustment unit 202 charges.
In concrete enforcement, when described first acquiring unit 201 may be used for a PWM ripple signal of the expression current nominal output current value of the charger transmission received, obtain the duty ratio of a described PWM ripple, according to the current value preset and the corresponding relation of PWM ripple duty ratio, obtain the current nominal output current value of described charger.
In concrete enforcement, described first adjustment unit 202 may be used for:
According to the current nominal output current value of described charger and the current output voltage value of described charger, calculate the current output power value of described charger;
According to the magnitude of voltage of the power-switching circuit in effective input power of described charging equipment and described charging equipment, calculate the charging current value that described current nominal output current value is corresponding, and described preset charged current value is adjusted to the charging current value of described correspondence.
In concrete enforcement, described first adjustment unit 202 may be used for the preset charged current value of described charging equipment to be adjusted to described current nominal output current value.
In concrete enforcement, described charging equipment 20 can comprise following at least one: mobile terminal, charger baby.
With reference to Fig. 3, the embodiment of the present invention additionally provides a kind of charging equipment 30, comprising: PWM testing circuit 301, controller 302, charging circuit 303 and battery 304, wherein:
PWM testing circuit 301, is suitable for the PWM ripple receiving charger transmission, and obtains the duty ratio of a described PWM ripple.
In embodiments of the present invention, in charging process, current nominal output current value according to the current value preset and the corresponding relation of PWM ripple duty ratio, can be converted to a PWM ripple of duty ratio corresponding, and is sent to charging equipment 30 by charger.
Such as, charger current nominal output current value is 2A, and according to the current value preset and the corresponding relation of PWM ripple duty ratio, the PWM ripple duty ratio that 2A is corresponding is 80%, then charger can send to charging equipment 30 the PWM ripple that duty ratio is 80%.
Charging equipment 30 detects the duty ratio of a PWM ripple by PWM testing circuit 301, and is sent to controller 302.
In embodiments of the present invention, PWM testing circuit 301 can comprise sample circuit, is sampled to a PWM ripple by sample circuit, thus can obtain the duty ratio of a PWM ripple.In an embodiment of the present invention, sample circuit comprises adc circuit, and adc circuit, after receiving a PWM ripple, can obtain the duty ratio that the PWM ripple that receives is corresponding.
In an alternative embodiment of the invention, sample circuit comprises high frequency clock circuit, produces high-frequency impulse by high frequency clock, carries out step-by-step counting to the high level of a PWM ripple and low level.The umber of pulse corresponding according to high level and umber of pulse corresponding to low level, can know the duty ratio of a PWM ripple.Sample circuit can also be other circuit, as long as meet the duty ratio that can obtain a PWM ripple, does not repeat herein.
In embodiments of the present invention, PWM testing circuit 301 also can comprise low pass filter and adc circuit, by low pass filter, filtering process is carried out to the PWM ripple received, one PWM ripple is converted to the direct current signal of corresponding voltage value, obtain magnitude of voltage corresponding to direct current signal by adc circuit, and the magnitude of voltage got is sent to controller 302.
With reference to Fig. 4, give the structural representation of a kind of PWM testing circuit in the embodiment of the present invention, comprising: low pass filter and adc circuit, low pass filter is made up of resistance R1 and electric capacity C1.Below by citing, the workflow of the PWM testing circuit in the embodiment of the present invention is described.
The current nominal output current value of charger is 2A, and the duty ratio of a corresponding PWM ripple is 80%.The high level of the one PWM ripple is 3V, low level is 0V, one PWM ripple is after low pass filter filtering, convert the direct current signal that magnitude of voltage is 3V × 80%=2.4V to, the magnitude of voltage that adc circuit collects the direct current signal of current input is 2.4V, can know that the duty ratio of a PWM ripple is 80%.
In embodiments of the present invention, low pass filter can be low-pass first order filter, also can be the low pass filter of second-order low-pass filter or other types.Such as, in an embodiment of the present invention, adopt low-pass first order filter as low pass filter, filtering process is carried out to the PWM ripple received.And in an alternative embodiment of the invention, then adopt second-order low-pass filter as low pass filter.
Controller 302, be suitable for the duty ratio according to a described PWM ripple, obtain the current nominal output current value of the described charger corresponding with described duty ratio, and according to the current nominal output current value of described charger, adjust the preset charged current value of described charging equipment, and to described charging circuit 303 sending controling instruction.
In embodiments of the present invention, controller 302 is after the duty ratio receiving the PWM ripple that PWM testing circuit sends, according to the current value preset and the corresponding relation of PWM ripple duty ratio, the current value that a PWM ripple is corresponding can be obtained, i.e. the current nominal output current value of charger.
Controller 302, after getting the current nominal output current value of charger, can adjust the charging current value of charging equipment, charging current value is adjusted to the current value that current nominal output current value is corresponding.After adjusting the current charging current of charging equipment, to charging circuit 303 sending controling instruction.
In embodiments of the present invention, correspond to the charging equipment adopting linear-charging mode, controller, can by the charging current I of charging equipment after getting the current nominal output current value of charger 0be adjusted to the current nominal output current value I of charger vBUS, the charging current value namely after adjustment is I vBUS.
Correspond to the charging equipment adopting switching regulator charging, controller can according to charger current nominal output current value I vBUSand current output voltage value U vBUS, calculating charger current output power value is Pc=I vBUS× U vBUS.According to the power supply conversion efficiency η of the power supply changeover device of switching regulator charging, calculate the effective input power P=Pc × η being input to charging equipment, and be input to effective input power P=I of charging equipment cHG× U dCDC, wherein, U dCDCfor the magnitude of voltage of power supply changeover device, I cHGfor the charging current value that charger current nominal output current value is corresponding.
Charging circuit 303, is suitable for according to described control command, produces the electric current corresponding with the charging current value after adjustment and inputs to described battery 304.
In embodiments of the present invention, after receiving the control command that controller 302 sends, charging circuit 303 produce with adjust after electric current corresponding to charging current value, and to be input in battery 304, thus to be embodied as battery 304 and to charge.
Such as, the charging current after adjustment is 1.6A, then charging circuit 303 produces the electric current of 1.6A, and inputs in battery 304, thus is embodied as battery 304 and charges, and namely the charging current of battery 304 is 1.6A.
Adopt switching regulator to be charged as example with charging equipment below, the workflow of the charging equipment that the embodiment of the present invention provides is described in detail.
Charger sends to charging equipment the PWM ripple that duty ratio is 80%, and corresponding current value is I vBUS=2A.PWM testing circuit receives the PWM ripple that charger sends, and after low pass filter and sample circuit, the duty ratio obtaining a PWM ripple is 80%.
Controller obtains the duty ratio of a PWM ripple, according to the corresponding relation of the current value preset and PWM ripple duty ratio, knows that the current transmission current value of charger is I vBUS=2A, and know that the current output voltage value of charger is U vBUS=5V, then charger current output power value is Pc=I vBUS× U vBUS=10W.
Efficiency eta=80% of DCDC in charging equipment, the preset charged current value I of charging equipment 0=600mA.According to P=I cHG× U dCDC=I vBUS× U vBUS× η, can calculate the charging current value I corresponding with current charger output-current rating value cHG.In actual applications, U dCDCcan be adjusted by the charge loop of charging equipment, adjust to and can maintain corresponding charging current.Such as, U dCDCcan obtain by measuring, such as, U dCDC=4V, then I cHG=2A, I cHG=2A > I 0=600mA, is adjusted to 2A by the preset charged current value of charging equipment.
Controller is to charging circuit sending controling instruction, and charging circuit, according to control command, produces the electric current of 2A and charges to battery.
In actual applications, charging equipment, the mobile terminals such as such as mobile phone, preset charged current value is general all smaller, such as 600mA, even if the output-current rating of charger is 2A, but the electric current that battery is 600mA with the current value preset always charges.And adopting the method in the embodiment of the present invention, then charging current value can be adjusted to 1.6A, the charging current after adjustment is greater than default current value, therefore can realize quick charge.
Be understandable that, in embodiments of the present invention, also directly can be obtained the duty ratio of a PWM ripple by PWM testing circuit 301, to obtain the current nominal output current value of charger.When charging equipment adopts linear mode to charge, the current nominal output current value of charger directly can be sent to charging circuit by PWM testing circuit 301, the electric current equal with charger current nominal output current value is exported, for battery 304 charges to control charging circuit 303.
In an embodiment of the present invention, charger sends a PWM ripple by the DP port of charger to charging equipment, and PWM testing circuit is connected with the DP port of charging equipment charging inlet, receives the PWM ripple that charger sends.
With reference to Fig. 5, in embodiments of the present invention, when the charging modes of charging equipment is switching regulator charging, charging equipment can also comprise pwm control circuit 305, wherein:
Pwm control circuit 305, is suitable for the corresponding relation according to the magnitude of voltage preset and PWM ripple duty ratio, the demand voltage value of described charging equipment is converted to the 2nd PWM ripple of duty ratio corresponding, and be sent to described charger.
In concrete enforcement, pwm control circuit 305 can comprise comparator and saw-toothed wave generator, and comparator, by comparing the magnitude of voltage of two input inputs, exports corresponding high level or low level.According to the corresponding relation of magnitude of voltage and the PWM ripple duty ratio preset, the duty ratio of the 2nd PWM ripple that the demand voltage value of acquisition charging equipment is corresponding.The first input end input sawtooth waveforms of comparator, the second input inputs a corresponding magnitude of voltage V2, by comparing the magnitude of voltage that magnitude of voltage V2 is corresponding with sawtooth waveforms in the same time mutually, exports high level or low level.By adjustment magnitude of voltage V2, namely produce the 2nd PWM ripple of duty ratio corresponding by comparator.
In an embodiment of the present invention, the corresponding relation of magnitude of voltage V2 and PWM ripple duty ratio can be set up in advance, such as, PWM ripple duty ratio corresponding during magnitude of voltage V2=1.6V is 80%, PWM ripple duty ratio corresponding during magnitude of voltage V2=1.2V is 60% etc., thus, when the duty ratio of the 2nd PWM ripple corresponding to the demand voltage value getting charging equipment is 60%, namely when the demand voltage value of charging equipment is 15V, the magnitude of voltage V2=1.2V of the second input input of comparator, thus generate the 2nd PWM ripple that duty ratio is 60%, and the 2nd PWM ripple is sent to charger.
In an embodiment of the present invention, PWM testing circuit 301 is arranged in charging equipment, is connected with the DM port of charging equipment charging inlet, receives the PWM ripple that charger is exported by the DM port of charger.Pwm control circuit 305 is arranged in charging equipment, is connected with the DP port of charging equipment charging inlet, is sent the signal representing demand voltage value by DP port to charger, namely sends the 2nd PWM ripple by DP port to charger.
The embodiment of the present invention additionally provides another kind of charging method, with reference to Fig. 6, is described in detail below by way of concrete steps.
Step S601, when receiving the signal representing charger current nominal output current value, obtains described charger current nominal output current value.
In concrete enforcement, represent that the signal of charger current nominal output current value can be the first PWM ripple, the duty ratio of a PWM ripple is corresponding with current nominal output current value.The duty ratio of a PWM ripple can be obtained, according to the current value preset and the corresponding relation of PWM ripple duty ratio, charger current nominal output current value can be obtained.
In the invention process, the detailed process obtaining charger current nominal output current value with reference to the step S101 in the above embodiment of the present invention, can not repeat herein.
Step S602, according to described charger current nominal output current value, adjusts the preset charged current value of described charging equipment, and charges with the charging current value after adjustment.
In concrete enforcement, when the charging modes of charging equipment is switching regulator charging, can adjust the charging current value of band charging device as follows:
According to described charger current nominal output current value and current output voltage value, calculate described current output power value;
According to the power supply conversion efficiency of the power-switching circuit in described charging equipment, calculate the effective input power being input to described charging equipment;
According to the magnitude of voltage of the power-switching circuit in effective input power of described charging equipment and described charging equipment, calculate the charging current value that described current nominal output current value is corresponding, and described preset charged current value is adjusted to charging current value corresponding to described current nominal output current value.
In concrete enforcement, when the charging modes of charging equipment is linear-charging, the preset charged current value of described charging equipment can be adjusted to described charger current nominal output current value.
In embodiments of the present invention, the detailed process adjusting the charging current value of charging equipment with reference to step S102, can not repeat herein.
The embodiment of the present invention additionally provides a kind of electronic installation, with reference to Fig. 2, can comprise:
First acquiring unit 201, for when receiving the signal representing the current output current value of charger, obtains described charger current nominal output current value;
First adjustment unit 202, for according to described charger current nominal output current value, adjusts preset charged current value;
First charhing unit 203, charges for the charging current value after adopting described first adjustment unit adjustment.
In concrete enforcement, described first acquiring unit 201 may be used for receiving the PWM ripple representing charger current nominal output current value, obtain the duty ratio of a described PWM ripple, according to the current value preset and the corresponding relation of PWM ripple duty ratio, obtain described charger current nominal output current value.
In concrete enforcement, described first adjustment unit 202 may be used for according to described current nominal output current value and described current output voltage value, calculates current output power value;
According to the power supply conversion efficiency of the power-switching circuit in described charging equipment, calculate the effective input power being input to described charging equipment;
According to the magnitude of voltage of the power-switching circuit in effective input power of described charging equipment and described charging equipment, calculate the charging current value that described current nominal output current value is corresponding, and described preset charged current value is adjusted to the charging current value of described correspondence.
In concrete enforcement, described first adjustment unit 202 may be used for the current nominal output current value preset charged current value of described charging equipment being adjusted to described charger.
The embodiment of the present invention additionally provides a kind of electronic equipment, with reference to Fig. 3, can comprise: PWM testing circuit 301, controller 302, charging circuit 303 and battery 304, wherein:
Described PWM testing circuit 301, is suitable for reception the one PWM ripple, and obtains the duty ratio of a described PWM ripple, and the duty ratio of a described PWM ripple is corresponding with described charger current nominal output current value;
Described controller 302, be suitable for the duty ratio according to a described PWM ripple, obtain the described charger current nominal output current value corresponding with described duty ratio, and according to described charger current nominal output current value, adjust the preset charged current value of described charging equipment, and to described charging circuit sending controling instruction;
Described charging circuit 303, is suitable for according to described control command, produces the electric current corresponding with the charging current value after adjustment and inputs to described battery 304.
In concrete enforcement, described PWM testing circuit 301 comprises: sample circuit, is suitable for sampling to a described PWM ripple, to obtain the duty ratio of a described PWM ripple.
In concrete enforcement, described sample circuit comprises adc circuit.
In concrete enforcement, described PWM testing circuit 301 comprises: low pass filter; With adc circuit or the high frequency clock circuit of described low pass filter coupled.
In concrete enforcement, described low pass filter comprise following any one: low-pass first order filter, second-order low-pass filter.
The embodiment of the present invention additionally provides another kind of charging method, with reference to Fig. 7, is described in detail below by way of concrete steps.
Step S701, obtains charger current nominal output current value.
Step S702, will represent that the signal of described current nominal output current value is sent to charging equipment.
In embodiments of the present invention, represent that the signal of described current nominal output current value is a PWM ripple, the duty ratio of a described PWM ripple is corresponding with the current nominal output current value of described charger.
In the present invention one implements, PWM ripple generating apparatus is set in charger, according to the current value preset and the corresponding relation of PWM ripple duty ratio, the current nominal output current value of charger is converted to a PWM ripple of duty ratio corresponding, and a PWM ripple is sent to charging equipment.
In an embodiment of the present invention, the PWM ripple generating apparatus arranged in charger comprises comparator and saw-toothed wave generator.Comparator, by comparing the magnitude of voltage of two input inputs, exports corresponding high level or low level.According to the corresponding relation of current value and the PWM ripple duty ratio preset, the duty ratio of the PWM ripple that the current nominal output current value of acquisition charger is corresponding.Saw-toothed wave generator generates sawtooth waveforms and is input to the first input end of comparator, at the second end input voltage value V1 of comparator, by comparing the magnitude of voltage that V1 is corresponding with sawtooth waveforms in the same time mutually, exports high level or low level.By adjustment magnitude of voltage V1, namely produce a PWM ripple of duty ratio corresponding by comparator.
In an embodiment of the present invention, the corresponding relation of magnitude of voltage V1 and PWM ripple duty ratio can be set up in advance, such as, PWM ripple duty ratio corresponding during magnitude of voltage V1=1.6V is 80%, PWM ripple duty ratio corresponding during magnitude of voltage V1=1.2V is 60% etc., thus, when the duty ratio of a PWM ripple corresponding to the output-current rating value getting current charger is 80%, the magnitude of voltage V1=1.6V of the second input input of comparator, thus generate the PWM ripple that duty ratio is 80%.
In other embodiments of the present invention, the PWM ripple generating apparatus in charger also can be that other can generate the device of PWM ripple, does not repeat herein.
The operation of charging equipment performed by after the PWM ripple receiving charger transmission with reference to the step S101 in the above embodiment of the present invention ~ step S102, can repeat no more herein.
With reference to Fig. 8, the embodiment of the present invention additionally provides a kind of charging device 80, comprising: second acquisition unit 801 and the second transmitting element 802, wherein:
Second acquisition unit 801, for obtaining charger current nominal output current value;
Second transmitting element 802, for representing that the signal of described current nominal output current value is sent to charging equipment.
In concrete enforcement, described second transmitting element 802 may be used for a PWM ripple to be sent to charging equipment, and the duty ratio of a described PWM ripple is corresponding with the current nominal output current value of described charger.
The embodiment of the present invention additionally provides a kind of charger, comprise: PWM output device, described PWM output device is suitable for obtaining charger current nominal output current value, described current nominal output current value is converted to a PWM ripple of duty ratio corresponding, and is sent to charging equipment.
In concrete enforcement, described PWM output device comprises: comparator; The saw-toothed wave generator coupled with described comparator.
In embodiments of the present invention, PWM output device generates the principle of a PWM ripple and flow process with reference to the step S702 in the above embodiment of the present invention, can repeat no more herein.
The embodiment of the present invention additionally provides another kind of charging method, with reference to Fig. 9, is described in detail below by way of concrete steps.
Step S901, obtains charger current nominal output current value.
Step S902, will represent that the signal of described current nominal output current value sends.
In embodiments of the present invention, step S901 ~ step S902 with reference to step S701 ~ step S702, can repeat no more herein.
The embodiment of the present invention additionally provides another kind of charging device, with reference to Fig. 8, can comprise: second acquisition unit and the second transmitting element, wherein:
Second acquisition unit, for obtaining charger current nominal output current value;
Second transmitting element, for representing that the signal of described charger current nominal output current value sends.
The embodiment of the present invention additionally provides another kind of charger, comprising: PWM output device, and described PWM output device is suitable for obtaining charger current nominal output current value, described current nominal output current value is converted to a PWM ripple of duty ratio corresponding and sends.
In this enforcement concrete, described PWM output device comprises: comparator; The saw-toothed wave generator coupled with described comparator.
In embodiments of the present invention, PWM output device generates the principle of a PWM ripple and flow process with reference to the step S702 in the above embodiment of the present invention, can repeat no more herein.
With reference to Figure 10, the embodiment of the present invention additionally provides a kind of charging system 100, comprising: charger 1001 and charging equipment 1002, wherein:
Described charger 1001, is suitable for, when receiving the signal of the expression current nominal output current value that charger sends, obtaining the current nominal output current value of described charger; According to the current nominal output current value of described charger, adjust the preset charged current value of described charging equipment, and charge with the charging current value after adjustment;
Described charging equipment 1002, be suitable for sending to described charging equipment the signal representing current nominal output current value, described charging equipment is made to obtain described current nominal output current value, according to the current nominal output current value of described charger, adjust the preset charged current value of described charging equipment, and charge with the charging current value after adjustment.
One of ordinary skill in the art will appreciate that all or part of step in the various methods of above-described embodiment is that the hardware that can carry out instruction relevant by program has come, this program can be stored in a computer-readable recording medium, and storage medium can comprise: ROM, RAM, disk or CD etc.
Although the present invention discloses as above, the present invention is not defined in this.Any those skilled in the art, without departing from the spirit and scope of the present invention, all can make various changes or modifications, and therefore protection scope of the present invention should be as the criterion with claim limited range.

Claims (41)

1. a charging method for charging equipment, is characterized in that, comprising:
When receiving the signal of the expression current nominal output current value that charger sends, obtain the current nominal output current value of described charger;
According to the current nominal output current value of described charger, adjust the preset charged current value of described charging equipment, and charge with the charging current value after adjustment.
2. the charging method of charging equipment as claimed in claim 1, is characterized in that,
The signal that described charger sends is a PWM ripple, and the duty ratio of a described PWM ripple is corresponding with the current nominal output current value of described charger;
Described acquisition described charger current nominal output current value, comprising: the duty ratio obtaining a described PWM ripple, according to the current value preset and the corresponding relation of PWM ripple duty ratio, obtains the current nominal output current value of described charger.
3. the charging method of charging equipment as claimed in claim 1, it is characterized in that, the described current nominal output current value according to described charger, adjusts the preset charged current value of described charging equipment, comprising:
According to the current nominal output current value of described charger and the current output voltage value of described charger, calculate the current output power value of described charger;
According to the power supply conversion efficiency of the power-switching circuit in described charging equipment, calculate the effective input power being input to described charging equipment;
According to the magnitude of voltage of the power-switching circuit in effective input power of described charging equipment and described charging equipment, calculate the charging current value that described current nominal output current value is corresponding, and described preset charged current value is adjusted to charging current value corresponding to described current nominal output current value.
4. the charging method of charging equipment as claimed in claim 1, it is characterized in that, the described current nominal output current value according to described charger, adjust the preset charged current value of described charging equipment, comprising: the current nominal output current value preset charged current value of described charging equipment being adjusted to described charger.
5. the charging method of charging equipment as claimed in claim 1, it is characterized in that, described charging equipment comprises following at least one: mobile terminal, charger baby.
6. a device to be charged, is characterized in that, comprising:
First acquiring unit, for when receiving the signal of the expression current nominal output current value that charger sends, obtains the current nominal output current value of described charger;
First adjustment unit, for the current nominal output current value according to described charger, adjusts the preset charged current value of described charging equipment;
First charhing unit, charges for the charging current value after adopting described first adjustment unit adjustment.
7. device to be charged as claimed in claim 6, it is characterized in that, described first acquiring unit is used for when receiving a PWM ripple signal of the expression current nominal output current value that charger sends, obtain the duty ratio of a described PWM ripple, according to the current value preset and the corresponding relation of PWM ripple duty ratio, obtain the current nominal output current value of described charger.
8. device to be charged as claimed in claim 6, it is characterized in that, described first adjustment unit is used for: according to the current nominal output current value of described charger and the current output voltage value of described charger, calculate the current output power value of described charger;
According to the power supply conversion efficiency of the power-switching circuit in described charging equipment, calculate the effective input power being input to described charging equipment;
According to the magnitude of voltage of the power-switching circuit in effective input power of described charging equipment and described charging equipment, calculate the charging current value that described current nominal output current value is corresponding, and described preset charged current value is adjusted to the charging current value of described correspondence.
9. device to be charged as claimed in claim 6, is characterized in that, described first adjustment unit is used for the preset charged current value of described charging equipment to be adjusted to described current nominal output current value.
10. device to be charged as claimed in claim 6, is characterized in that, described charging equipment comprises following at least one: mobile terminal, charger baby.
11. 1 kinds of charging equipments, is characterized in that, comprising: PWM testing circuit, controller, charging circuit and battery, wherein:
Described PWM testing circuit, be suitable for the PWM ripple receiving charger transmission, and obtain the duty ratio of a described PWM ripple, the duty ratio of a described PWM ripple is corresponding with the current nominal output current value of described charger;
Described controller, be suitable for the duty ratio according to a described PWM ripple, obtain the current nominal output current value of the described charger corresponding with described duty ratio, and according to the current nominal output current value of described charger, adjust the preset charged current value of described charging equipment, and to described charging circuit sending controling instruction;
Described charging circuit, is suitable for according to described control command, produces the electric current corresponding with the charging current value after adjustment and inputs to described battery.
12. charging equipments as claimed in claim 11, it is characterized in that, described PWM testing circuit comprises: sample circuit, is suitable for sampling to a described PWM ripple, to obtain the duty ratio of a described PWM ripple.
13. charging equipments as claimed in claim 12, it is characterized in that, described sample circuit comprises adc circuit.
14. charging equipments as claimed in claim 11, it is characterized in that, described PWM testing circuit comprises: low pass filter; With adc circuit or the high frequency clock circuit of described low pass filter coupled.
15. charging equipments as claimed in claim 14, is characterized in that, described low pass filter comprise following any one: low-pass first order filter, second-order low-pass filter.
16. 1 kinds of charging methods, is characterized in that, comprising:
When receiving the signal representing charger current nominal output current value, obtain described charger current nominal output current value;
According to described charger current nominal output current value, adjustment preset charged current value, and charge with the charging current value after adjustment.
17. charging methods as claimed in claim 16, is characterized in that, the signal of described expression charger current nominal output current value is a PWM ripple, and the duty ratio of a described PWM ripple is corresponding with described charger current nominal output current value; Described acquisition described charger current nominal output current value, comprising: the duty ratio obtaining a described PWM ripple, according to the current value preset and the corresponding relation of PWM ripple duty ratio, obtains described charger current nominal output current value.
18. charging methods as claimed in claim 16, is characterized in that, the described current nominal output current value according to described charger, and adjustment preset charged current value, comprising:
According to described charger current nominal output current value and described charger current output voltage value, calculate described charger current output power value;
According to the power supply conversion efficiency of power-switching circuit, calculate effective input power of input;
According to the magnitude of voltage of described effective input power and described power-switching circuit, calculate the charging current value that described current nominal output current value is corresponding, and described preset charged current value is adjusted to charging current value corresponding to described current nominal output current value.
19. charging methods as claimed in claim 16, is characterized in that, described according to described charger current nominal output current value, and adjustment preset charged current value, comprising: described preset charged current value is adjusted to described charger current nominal output current value.
20. 1 kinds of electronic installations, is characterized in that, comprising:
First acquiring unit, for when receiving the signal representing the current output current value of charger, obtains described charger current nominal output current value;
First adjustment unit, for according to described charger current nominal output current value, adjusts preset charged current value;
First charhing unit, the charging current value after adjusting for adopting described adjustment unit charges.
21. electronic installations as claimed in claim 20, it is characterized in that, described first acquiring unit represents a PWM ripple of charger current nominal output current value for receiving, obtain the duty ratio of a described PWM ripple, according to the current value preset and the corresponding relation of PWM ripple duty ratio, obtain described charger current nominal output current value.
22. electronic installations as claimed in claim 20, is characterized in that, described first adjustment unit is used for according to described current nominal output current value and described current output voltage value, calculate current output power value; According to the power supply conversion efficiency of the power-switching circuit in described charging equipment, calculate the effective input power being input to described charging equipment;
According to the magnitude of voltage of the power-switching circuit in effective input power of described charging equipment and described charging equipment, calculate the charging current value that described current nominal output current value is corresponding, and described preset charged current value is adjusted to the charging current value of described correspondence.
23. electronic installations as claimed in claim 20, is characterized in that, described first adjustment unit is used for the current nominal output current value preset charged current value of described charging equipment being adjusted to described charger.
24. 1 kinds of electronic equipments, is characterized in that, comprising: PWM testing circuit, controller, charging circuit and battery, wherein:
Described PWM testing circuit, is suitable for reception the one PWM ripple, and obtains the duty ratio of a described PWM ripple, and the duty ratio of a described PWM ripple is corresponding with described charger current nominal output current value;
Described controller, be suitable for the duty ratio according to a described PWM ripple, obtain the described charger current nominal output current value corresponding with described duty ratio, and according to described charger current nominal output current value, adjust the preset charged current value of described charging equipment, and to described charging circuit sending controling instruction; Described charging circuit, is suitable for according to described control command, produces the electric current corresponding with the charging current value after adjustment and inputs to described battery.
25. electronic equipments as claimed in claim 24, it is characterized in that, described PWM testing circuit comprises: sample circuit, is suitable for sampling to a described PWM ripple, to obtain the duty ratio of a described PWM ripple.
26. electronic equipments as claimed in claim 25, it is characterized in that, described sample circuit comprises adc circuit.
27. electronic equipments as claimed in claim 24, it is characterized in that, described PWM testing circuit comprises: low pass filter; With adc circuit or the high frequency clock circuit of described low pass filter coupled.
28. electronic equipments as claimed in claim 27, is characterized in that, described low pass filter comprise following any one: low-pass first order filter, second-order low-pass filter.
29. 1 kinds of charging methods, is characterized in that, comprising:
Obtain charger current nominal output current value;
To represent that the signal of described current nominal output current value is sent to charging equipment.
30. charging methods as claimed in claim 29, is characterized in that, the signal of the described current nominal output current value of described expression is a PWM ripple, and the duty ratio of a described PWM ripple is corresponding with the current nominal output current value of described charger.
31. 1 kinds of charging devices, is characterized in that, comprising:
Second acquisition unit, for obtaining charger current nominal output current value;
Second transmitting element, for representing that the signal of described current nominal output current value is sent to charging equipment.
32. charging devices as claimed in claim 31, is characterized in that, described second transmitting element is used for a PWM ripple to be sent to charging equipment, and the duty ratio of a described PWM ripple is corresponding with the current nominal output current value of described charger.
33. 1 kinds of chargers, it is characterized in that, comprising: PWM output device, described PWM output device is suitable for obtaining charger current nominal output current value, described current nominal output current value is converted to a PWM ripple of duty ratio corresponding, and be sent to charging equipment.
34. chargers as claimed in claim 33, it is characterized in that, described PWM output device comprises: comparator; The saw-toothed wave generator coupled with described comparator.
35. 1 kinds of charging methods, is characterized in that, comprising:
Obtain charger current nominal output current value;
To represent that the signal of described current nominal output current value sends.
36. charging methods as claimed in claim 35, is characterized in that, the signal of the described current nominal output current value of described expression is a PWM ripple, and the duty ratio of a described PWM ripple is corresponding with the current nominal output current value of described charger.
37. 1 kinds of charging devices, is characterized in that, comprising:
Second acquisition unit, for obtaining charger current nominal output current value;
Second transmitting element, for representing that the signal of described charger current nominal output current value sends.
38. charging devices as claimed in claim 37, is characterized in that, described second transmitting element is for sending a PWM ripple, and the duty ratio of a described PWM ripple is corresponding with the current nominal output current value of described charger.
39. 1 kinds of chargers, is characterized in that, comprising: PWM output device, and described PWM output device is suitable for obtaining charger current nominal output current value, described current nominal output current value is converted to a PWM ripple of duty ratio corresponding and sends.
40. chargers as claimed in claim 39, it is characterized in that, described PWM output device comprises: comparator; The saw-toothed wave generator coupled with described comparator.
41. 1 kinds of charging systems, is characterized in that, comprising: charger and charging equipment, wherein:
Described charging equipment, is suitable for, when receiving the signal of the expression current nominal output current value that charger sends, obtaining the current nominal output current value of described charger; According to the current nominal output current value of described charger, adjust the preset charged current value of described charging equipment, and charge with the charging current value after adjustment;
Described charger, be suitable for sending to described charging equipment the signal representing current nominal output current value, described charging equipment is made to obtain described current nominal output current value, according to the current nominal output current value of described charger, adjust the preset charged current value of described charging equipment, and charge with the charging current value after adjustment.
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CN112590600A (en) * 2020-12-21 2021-04-02 上汽通用五菱汽车股份有限公司 Self-adaptive adjustment method for charging request current of quick-charging pile

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