CN103337887A - Intelligent charger system and circuit - Google Patents
Intelligent charger system and circuit Download PDFInfo
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- CN103337887A CN103337887A CN2013102541233A CN201310254123A CN103337887A CN 103337887 A CN103337887 A CN 103337887A CN 2013102541233 A CN2013102541233 A CN 2013102541233A CN 201310254123 A CN201310254123 A CN 201310254123A CN 103337887 A CN103337887 A CN 103337887A
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Abstract
The invention discloses an intelligent charger system. The intelligent charger system comprises a reference voltage adjusting module, a comparing module, an amplifying module and a feedback acquisition module. The intelligent charger system takes an Infineon 8-bit singlechip XC866 as a PWM (pulse-width modulation) control unit; software controls the XC866 to output PWM with a fixed frequency of 50 K; the duty ratio of the PWM is from 0 to 100% and is adjusted by the software; the PWM output by the XC866 is rectified by a filter circuit into variable 0-5 V direct current as reference voltage; the reference voltage controls output voltage and output current of a transformer of the charger by controlling the duty ratio of the 50 K PWM to control the method and the circuit of the output voltage and current. Hardware is not required to be modified, and the software modifies a charging curve of the charger, so that charging equipment enters a brand-new adaptive and intelligent stage.
Description
Technical field
The invention belongs to the electric car charger field, relate in particular to a kind of intelligent charger system and circuit.
Background technology
Charger is commonly referred to as and a kind of alternating current is converted to galvanic equipment, charger is of many uses in every field, particularly be widely used in the common electrical equipment of electric motor car etc. at sphere of life, charger is to adopt power electronics semiconductor device, voltage and the constant alternating current of fixed-frequency are transformed to galvanic a kind of static ac dc converter device, in the electricity consumption occasion that with the storage battery is working power or stand-by power supply, charger is with a wide range of applications, the selection of charging modes directly affects service efficiency and the useful life of battery, and the charging technique development in recent years is very fast; Three phases has been experienced in the development of charger: 1. current limiting pressure-limiting formula charger: the most original is exactly the limited pressure charging, carry out the transition to the charging of current limiting pressure-limiting formula then, the mode that it uses is exactly shallow shallow the putting of filling, its life-span statement is exactly the time, there is not number of times, such as 10 years, the effect of this charge mode is relatively poor, 2. constant current/limited pressure charger: this is that the charger of this pattern of second stage of charger development has occupied charger market nearly half a century, at first, with the extremely predetermined magnitude of voltage of constant current charge, then, change constant voltage into and finish remaining charging, when constant current charge refers to charge in batteries, adopt the method for multi-stage constant current to charge, and this electric current reaches with the adjustment charging device, its main feature is that this charging method has bigger adaptability, can select and adjust charging current arbitrarily, therefore can be to the charge in batteries of various different situations and state, main feature is: charging initial stage electric current is quite big, and storage battery electromotive force and electrolyte relative density rise very fast, along with the continuity of charging, charging current reduces gradually, has only very little electric current to pass through final period in charging; Charging interval is short, energy consumption is low, storage battery can obtain the 90%-95% of self-capacity after general the charging 4-5 hour: proper if charging voltage is selected, can finish whole charging process in 8 hours, and whole charging process does not need the people to look after, so be widely used in boost charge, 3. self-adapting intelligent charger: along with the appearance of extensive integrated IC, charging device has entered a brand-new self adaptation, the intelligence stage, namely be called third generation charger: traditional battery charger mostly is the analog circuit charger, there is bigger drawback, its peripheral components is many, the circuit complexity, the cost height, difficult design, maintenance difficult, the maintenance and expansion poor performance, reliability is not high, charging method falls behind, charging interval is often longer, from charging system, external charging system is at product with technically all obtained considerable progress in recent years, advanced technology is (as computer technology, control technology, artificial intelligence technology, fuzzy control technology etc.) make charge prepd from the single type charger to multi-functional, safety-type, the intelligent charging series of products transform, the design of large-scale charging station will be considered the networking of charger, comprise on electric can information in parallel on communicate by letter, interoperability on the task etc.
Electric Vehicle Development is failed deep expansion in the world, wherein, most important also is that a most difficult problem is " charging " problem, mainly refer to charge mode and parameter, in China, greatly developing of electric motor car is extremely urgent thing, thereby charger and charging technique are in very crucial position, a performance excellent charge device will solve the series of theories problem, for example, prevents or reduces polarity effect as far as possible; Prevent thermal runaway, prevent or reduce the dehydration effect as far as possible; Formed irreversible salinization prevents from charging, etc., at present because traditional charger charging rate is slow, charging interval is long, the charging available capacity is low, circulation receive the order short, to the battery easy damaged, the quick charge technology is failed fully so far, traditional battery charger mostly is the analog circuit charger, there is bigger drawback, its peripheral components is many, circuit is complicated, cost is high, difficult design, maintenance difficult, maintenance and expansion poor performance, reliability are not high, and charging method falls behind, the charging interval is often longer.
Summary of the invention
The objective of the invention is to utilize a kind of intelligent charger system and circuit, charger charging rate traditional before being intended to solve is slow, charging interval is long, the charging available capacity is low, circulation receive the order short, to the battery easy damaged, the quick charge technology is failed fully so far, traditional battery charger mostly is the analog circuit charger, there are circuit complexity, cost height, difficult design, maintenance difficult, maintenance and expansion poor performance, reliability are not high, and charging method falls behind, charging interval long problem often.
The object of the present invention is to provide a kind of intelligent charger system, described intelligent charger system comprises:
The reference voltage adjusting module is for the reference voltage of adjusting charger;
Comparison module is connected with described reference voltage adjusting module, is used for realizing the comparison of reference voltage and output voltage;
Amplification module is connected with described comparison module, amplifies for the definite value that the reference voltage dividing potential drop is come out in realization;
The feedback acquisition module is connected with comparison module with described amplification module, is used for realizing output voltage or the current signal that collects fed back.
Another object of the present invention is to provide a kind of intelligent charger circuit, the connected mode of described intelligent charger circuit is:
The concrete connected mode of intelligent charger control chip is: 1 pin of chip U4 meets voltage source VCC by resistance R; The 4 pin wind-receiving fans of chip U4; 7 pins of chip U4 directly, 8 pins link to each other with 7 pins by capacitor C 15, then ground connection; 11 pins of chip U4 meet voltage source VCC by resistance R; 13 pins of chip U4 are succeeded electrical equipment 2; 13 pins of chip U4 are succeeded electrical equipment 1; 15 pins of chip U4 meet TEST_V2; 16 pins of chip U4 meet TEST_V1; 17 pins of chip U4 meet TEST_C; 18 pins of chip U4 directly meet voltage source VCC, link to each other with 18 pins by capacitor C 16 then, then ground connection; 20 pins of chip U4 connect probe temperature 1; 21 pins of chip U4 connect probe temperature 2; 22 pins of chip U4 connect probe temperature 3; The direct ground connection of 24 pins of chip U4; The 25 pin parts of chip U4 meet supply voltage VCC, and a part links to each other with 24 pins by capacitor C 17, then ground connection; 27 pins of chip U4 connect the diode red light; 28 pins of chip U4 connect the diode green light; 29 pins of chip U4 connect the diode amber light; 32 pins of chip U4 meet OUT_C; 34 pins of chip U4 connect output voltage; The 38 pin parts of chip U4 connect draws capacitor C 18, and a part meets voltage source VCC by resistance R 50;
Concrete being connected to of filter circuit figure of intelligent charger: the inverting input 9 of operational amplifier LMV324 connects operational amplifier LMV324 output 8, operational amplifier LMV324 output 8 connecting resistance R21, in-phase input end 10 parts of operational amplifier LMV324 are by capacitor C 23 ground connection, a part is by resistance R 13, meet OUT_V then, i.e. 34 pins of chip U4; In like manner, the inverting input 13 of another operational amplifier LMV324 connects operational amplifier LMV324 output 14, operational amplifier LMV324 output 14 connecting resistance R21, in-phase input end 12 parts of operational amplifier LMV324 are by capacitor C 24 ground connection, a part is by resistance R 16, meet OUT_C then, i.e. 32 pins of chip U4.
Further, described intelligent charger control chip adopts 8 single-chip microcomputer XC866 of Infineon as the PWM control unit, duty ratio by the control fixed frequency, adjust reference voltage through behind the filter shape, reference voltage compares with the voltage and current of feedback output, the control charger transformer output voltage and current consistent with reference voltage.
Intelligent charger system provided by the invention and circuit, adopt 8 single-chip microcomputer XC866 of Infineon as the PWM control unit, wave circuit output reference voltage after filtration, the PWM of software control XC866 output fixed frequency 50K, the duty ratio of PWM between 0～100% by the software adjustment, the PWM of XC866 output wave circuit after filtration is rectified into variable 0～5V direct current as reference voltage, transformer output voltage and the electric current of reference voltage control charger, recently control method and the circuit of output voltage and electric current by the duty of PWM of control 50K, do not need to revise hardware, revise the charger charging curve by software, make charging device enter a brand-new self adaptation, the intelligence stage.
Description of drawings
Fig. 1 is the structured flowchart of the intelligent charger system that provides of the embodiment of the invention;
Fig. 2 is the circuit diagram of the control chip of the intelligent charger that provides of the embodiment of the invention;
Fig. 3 is the filter circuit figure of the intelligent charger that provides of the embodiment of the invention.
Among the figure: 1, reference voltage adjusting module; 2, comparison module; 3, amplification module; 4, feedback acquisition module.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the present invention, and be not used in restriction the present invention.
The embodiment of the invention provides a kind of intelligent charger system, and this intelligent charger system comprises:
The reference voltage adjusting module is for the reference voltage of adjusting charger;
Comparison module is connected with the reference voltage adjusting module, is used for realizing the comparison of reference voltage and output voltage;
Amplification module is connected with comparison module, amplifies for the definite value that the reference voltage dividing potential drop is come out in realization;
The feedback acquisition module is connected with comparison module with amplification module, is used for realizing output voltage or the current signal that collects fed back.
Following with reference to accompanying drawing, embodiment of the invention intelligent charger system and circuit are described in further detail.
Show the structured flowchart of the intelligent charger system that the embodiment of the invention provides as Fig. 1, the present invention comprises 4 functional modules:
Reference voltage adjusting module 1, thus the reference voltage that its function is the duty of the PWM by adjusting fixed frequency recently adjusts charger is realized the control to the output voltage electric current;
Feedback acquisition module 4 is connected with amplification module 3, comparison module 2, is used for realizing output voltage or the current signal that collects fed back to comparison module 2, realizes the comparison of reference voltage and output voltage.
Show the circuit connection diagram of the intelligent charger control chip that the embodiment of the invention provides as Fig. 2, the major function of this circuit diagram is to produce corresponding PWM, adopt 8 single-chip microcomputer XC866 of Infineon as the PWM control unit, duty ratio by the control fixed frequency, adjust reference voltage through behind the filter shape, reference voltage compares with the voltage and current of feedback output, the control charger transformer output voltage and current consistent with reference voltage, the XC866 operating frequency reaches 80M, the PWM frequency reaches 26.6M, and its concrete connected mode is: 1 pin of chip U4 meets voltage source VCC by resistance R; The 4 pin wind-receiving fans of chip U4; 7 pins of chip U4 directly, 8 pins link to each other with 7 pins by capacitor C 15, then ground connection; 11 pins of chip U4 meet voltage source VCC by resistance R; 13 pins of chip U4 are succeeded electrical equipment 2; 13 pins of chip U4 are succeeded electrical equipment 1; 15 pins of chip U4 meet TEST_V2; 16 pins of chip U4 meet TEST_V1; 17 pins of chip U4 meet TEST_C; 18 pins of chip U4 directly meet voltage source VCC, link to each other with 18 pins by capacitor C 16 then, then ground connection; 20 pins of chip U4 connect probe temperature 1; 21 pins of chip U4 connect probe temperature 2; 22 pins of chip U4 connect probe temperature 3; The direct ground connection of 24 pins of chip U4; The 25 pin parts of chip U4 meet supply voltage VCC, and a part links to each other with 24 pins by capacitor C 17, then ground connection; 27 pins of chip U4 connect the diode red light; 28 pins of chip U4 connect the diode green light; 29 pins of chip U4 connect the diode amber light; 32 pins of chip U4 meet OUT_C; 34 pins of chip U4 connect output voltage; The 38 pin parts of chip U4 connect draws capacitor C 18, and a part meets voltage source VCC by resistance R 50.
Show the filter circuit figure of the intelligent charger that the embodiment of the invention provides as Fig. 3, what it was concrete is connected to: the inverting input 9 of operational amplifier LMV324 connects operational amplifier LMV324 output 8, operational amplifier LMV324 output 8 connecting resistance R21, in-phase input end 10 parts of operational amplifier LMV324 are by capacitor C 23 ground connection, a part is by resistance R 13, meet OUT_V then, i.e. 34 pins of chip U4; In like manner, the inverting input 13 of another operational amplifier LMV324 connects operational amplifier LMV324 output 14, operational amplifier LMV324 output 14 connecting resistance R21, in-phase input end 12 parts of operational amplifier LMV324 are by capacitor C 24 ground connection, a part is by resistance R 16, meet OUT_C then, i.e. 32 pins of chip U4.
The method that the present invention controls charger output voltage and electric current is recently to adjust the reference voltage of charger by the duty of the PWM that adjusts fixed frequency.Reference voltage is directly proportional with the duty ratio of PWM, the reference voltage of duty ratio correspondence 0～5V of 0～100%, so output voltage is linear adjustable; Concrete grammar is as follows: adopt 8 single-chip microcomputer XC866 of Infineon as the PWM control unit, the XC866 operating frequency reaches 80M, the PWM frequency reaches 26.6M, single-chip microcomputer is exported PWM as shown in Figure 3, filter circuit output reference voltage through diagram 4, XC866 is zero by software control charger output current, as depicted in figs. 1 and 2 circuit.The XC866 single-chip microcomputer is zero by software control PWM duty ratio among Fig. 1, is that the charger output current is zero; The course of work is: the PWM of software control XC866 output fixed frequency 50K, the duty ratio of PWM between 0～100% by the software adjustment, the PWM of XC866 output wave circuit after filtration is rectified into variable 0～5V direct current as reference voltage, transformer output voltage and the electric current of reference voltage control charger.Because output voltage and electric current are adjustable, so the charger charging curve can be adjusted by software.
The above only is preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (3)
1. an intelligent charger system is characterized in that, described intelligent charger system comprises:
The reference voltage adjusting module that is used for the reference voltage of adjustment charger;
Be connected with described reference voltage adjusting module, be used for the comparison module of the comparison of realization reference voltage and output voltage;
Be connected with described comparison module, for the amplification module of realizing the definite value that the reference voltage dividing potential drop is come out is amplified;
Be connected with comparison module with described amplification module, be used for realize the feedback acquisition module that the output voltage that will collect or current signal feed back.
2. intelligent charger circuit that is used for the described intelligent charger of claim 1 system is characterized in that the connected mode of described intelligent charger circuit is:
The concrete connected mode of intelligent charger control chip is: 1 pin of chip U4 meets voltage source VCC by resistance R; The 4 pin wind-receiving fans of chip U4; 7 pins of chip U4 directly, 8 pins link to each other with 7 pins by capacitor C 15, then ground connection; 11 pins of chip U4 meet voltage source VCC by resistance R; 13 pins of chip U4 are succeeded electrical equipment 2; 13 pins of chip U4 are succeeded electrical equipment 1; 15 pins of chip U4 meet TEST_V2; 16 pins of chip U4 meet TEST_V1; 17 pins of chip U4 meet TEST_C; 18 pins of chip U4 directly meet voltage source VCC, link to each other with 18 pins by capacitor C 16 then, then ground connection; 20 pins of chip U4 connect probe temperature 1; 21 pins of chip U4 connect probe temperature 2; 22 pins of chip U4 connect probe temperature 3; The direct ground connection of 24 pins of chip U4; The 25 pin parts of chip U4 meet supply voltage VCC, and a part links to each other with 24 pins by capacitor C 17, then ground connection; 27 pins of chip U4 connect the diode red light; 28 pins of chip U4 connect the diode green light; 29 pins of chip U4 connect the diode amber light; 32 pins of chip U4 meet OUT_C; 34 pins of chip U4 connect output voltage; The 38 pin parts of chip U4 connect draws capacitor C 18, and a part meets voltage source VCC by resistance R 50;
Concrete being connected to of filter circuit figure of intelligent charger: the inverting input 9 of operational amplifier LMV324 connects operational amplifier LMV324 output 8, operational amplifier LMV324 output 8 connecting resistance R21, in-phase input end 10 parts of operational amplifier LMV324 are by capacitor C 23 ground connection, a part is by resistance R 13, meet OUT_V then, i.e. 34 pins of chip U4; In like manner, the inverting input 13 of another operational amplifier LMV324 connects operational amplifier LMV324 output 14, operational amplifier LMV324 output 14 connecting resistance R21, in-phase input end 12 parts of operational amplifier LMV324 are by capacitor C 24 ground connection, a part is by resistance R 16, meet OUT_C then, i.e. 32 pins of chip U4.
3. intelligent charger circuit as claimed in claim 2, it is characterized in that, described intelligent charger control chip adopts 8 single-chip microcomputer XC866 as the PWM control unit, duty ratio by the control fixed frequency, adjust reference voltage through behind the filter shape, reference voltage compares with the voltage and current of feedback output, the control charger transformer output voltage and current consistent with reference voltage.
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| CN201310254123.3A CN103337887B (en) | 2013-06-25 | 2013-06-25 | A kind of intelligent charger system and circuit |
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| CN201310254123.3A CN103337887B (en) | 2013-06-25 | 2013-06-25 | A kind of intelligent charger system and circuit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106787057A (en) * | 2017-01-12 | 2017-05-31 | 东莞市太业电子股份有限公司 | A kind of portable power source charge control loop |
| CN108075548A (en) * | 2018-01-10 | 2018-05-25 | 上海展扬通信技术有限公司 | Charge control method, mobile terminal and computer readable storage medium |
| CN110767950A (en) * | 2019-10-31 | 2020-02-07 | Oppo广东移动通信有限公司 | Charging method, charging device, terminal equipment and computer readable storage medium |
| CN117110836A (en) * | 2023-08-25 | 2023-11-24 | 深圳莱福德科技股份有限公司 | Overvoltage protection testing device and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117110836A (en) * | 2023-08-25 | 2023-11-24 | 深圳莱福德科技股份有限公司 | Overvoltage protection testing device and method |
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