CN106208268B - Based on the constant current constant voltage induction type wireless charging system for becoming einer Primargrosse - Google Patents
Based on the constant current constant voltage induction type wireless charging system for becoming einer Primargrosse Download PDFInfo
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- CN106208268B CN106208268B CN201610814192.9A CN201610814192A CN106208268B CN 106208268 B CN106208268 B CN 106208268B CN 201610814192 A CN201610814192 A CN 201610814192A CN 106208268 B CN106208268 B CN 106208268B
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- 238000007600 charging Methods 0.000 title claims abstract description 44
- 230000006698 induction Effects 0.000 title claims abstract description 17
- 239000003990 capacitor Substances 0.000 claims abstract description 57
- 230000005611 electricity Effects 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 2
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- 239000013256 coordination polymer Substances 0.000 description 4
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- 238000004458 analytical method Methods 0.000 description 2
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- 238000010277 constant-current charging Methods 0.000 description 2
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- H02J7/025—
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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
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
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Abstract
The invention discloses a kind of based on the constant current constant voltage induction type wireless charging system for becoming einer Primargrosse, it is made of transmitting portion and receiving portion, the constant current constant voltage switching circuit one that transmitting portion is equipped with realizes that the composition of switching circuit one is: primary constant current capacitor (C is successively sealed between high-frequency inverter (H) and primary coilPC) and primary additional serial capacitor (CPS), and in primary additional serial capacitor (CPS) on switching switch one in parallel；And the control terminal for switching switch one is connected with controller one, as shown in Figure 1；Or transmitting portion is equipped with constant current constant voltage switching circuit two, the composition of switching circuit two is: primary constant pressure capacitor (C is concatenated between the high-frequency inverter (H) and primary coilPV)；Primary additional shunt capacitance (CPP) and switching switch two series connection after be then parallelly connected with primary constant pressure capacitor (CPV) on, and the control terminal for switching switch two is connected with controller two.The system can export the constant current and constant voltage unrelated with loading, and structure and control is simple, the operation is stable, and manufacturing cost is low.
Description
Technical field
The present invention relates to a kind of based on the constant current constant voltage induction type wireless charging system for becoming einer Primargrosse.
Background technique
Induction type wireless power transmission technology by magnetic field in a non-contact manner to electrical appliance carry out flexibly, safety, can
By power supply, the safety problems such as contact sparking, electric leakage existing for traditional plug-in type electric energy transmission system are avoided.The technology is wide
It is general to apply to the fields such as built-in medical device, consumption electronic product, illumination and electric car.Wherein, wireless with induction type
The development prospect that electric energy transmission system carries out wireless charging to battery is huge.
In order to realize that cell safety charges, extends the service life and charge and discharge number of battery, usually mainly include constant current
With two charging stages of constant pressure.Constant current mode is used at charging initial stage, cell voltage increases sharply；It is filled when cell voltage reaches
When electricity setting voltage, charged using constant voltage mode, charging current, which is progressively smaller until, reaches charging cut-off current, charging complete.
Namely the induction type wireless charging system charged the battery should be able to provide constant electric current and voltage.
The main composition and the course of work of existing wireless charging system are as follows: industrial-frequency alternating current becomes direct current by rectification,
DC inverter injects primary coil at high-frequency alternating current, high frequency alternating current after inverter, generates high-frequency alternating magnetic field；
Secondary coil induces induced electromotive force in the high frequency magnetic field that primary coil generates, after which passes through high-frequency rectification
Electric energy is provided to load.Since the equivalent impedance of load (battery) is to change, so system is difficult under certain input voltage
Constant current needed for output loading or voltage.To solve this problem, there are two types of usual ways: one, drawing in circuit system
Enter close loop negative feedback control, controller is added such as before inverter and adjusts input voltage perhaps using phase shifting control or secondary
DC-DC converter is added after grade coil rectification；Its defect is to increase control cost and complexity, reduces system stability.
Two, using frequency control, system work realizes constant current and constant voltage output in two different frequency points, but this method will appear frequency
Rate bifurcation causes system job insecurity.
Summary of the invention
The purpose of the present invention is make induction type wireless charging system can output constant current can also export constant pressure, be suitable for electricity
Pond is charged, and the charging of multi-load under especially single power supply such as charges simultaneously to more electric vehicles；And its is easy to control,
System the operation is stable, structure is simple, manufacturing cost is low.
The present invention realizes that the first technical solution used by its goal of the invention is, a kind of based on the constant current for becoming einer Primargrosse
Constant pressure induction type wireless charging system, is made of transmitting portion and receiving portion, and receiving portion includes sequentially connected secondary wire
Circle, secondary compensation capacitor, current rectifying and wave filtering circuit, cell load；Transmitting portion includes sequentially connected DC power supply, high-frequency inversion
Device, constant current constant voltage switching circuit one and primary coil；It is characterized in that, also being gone here and there between the high-frequency inverter and primary coil
It is connected to constant current constant voltage switching circuit one, the composition of the constant current constant voltage switching circuit one is:
Primary constant current capacitor and primary additional serial capacitor are successively sealed between high-frequency inverter and primary coil, and first
Switching switch one in parallel on grade additional serial capacitor；And the control terminal for switching switch one is connected with controller one.
Further, the capacitance of the primary constant current capacitorIt is determined by formula (1):
The capacitance of the primary additional serial capacitorIt is determined by formula (2):
The capacitance of the secondary compensation capacitorIt is determined by formula (3):
The inductance value of the secondary compensation inductanceIt is determined by formula (4):
In formula (1), (2), (3) and (4),For the output voltage values of DC power supply (E), ω is system work angular frequency, IB
To set charging current, VBTo set charging voltage,Respectively primary coil and secondary inductance value.
The application method of the first technical solution of the invention is:
The control switching switch one of controller one is closed, and system works in constant current mode, exports constant current to load, i.e.,
The constant charge current I of setting is provided to batteryB；It is suitble to battery charging initial stage to use.
The control switching switch one of controller one disconnects, and induction type wireless charging system works in constant voltage mode, system work
In constant voltage mode, constant voltage is exported to load, i.e., provides the constant charge voltage V of setting to batteryB；After being suitble to battery charging
Phase, cell voltage use when reaching charging setting voltage.
The present invention realizes that second of technical solution used by its goal of the invention is, a kind of based on the constant current for becoming einer Primargrosse
Constant pressure induction type wireless charging system, is made of transmitting portion and receiving portion, and receiving portion includes sequentially connected secondary wire
Circle, secondary compensation capacitor, current rectifying and wave filtering circuit, cell load；Transmitting portion includes sequentially connected DC power supply, high-frequency inversion
Device/constant current constant voltage switching circuit two and primary coil；It is characterized in that, also being gone here and there between the high-frequency inverter and primary coil
It is connected to constant current constant voltage switching circuit two, the composition of the constant current constant voltage switching circuit two is:
Primary constant pressure capacitor is concatenated between the high-frequency inverter and primary coil；Primary additional shunt capacitance and switching
Switch two is then parallelly connected on primary constant pressure capacitor after connecting,；And the control terminal for switching switch two is connected with controller two.
Further, the capacitance of the primary constant pressure capacitorIt is determined by formula (5):
The capacitance of the additional shunt capacitanceIt is determined by formula (6):
The capacitance of the secondary compensation capacitorIt is determined by formula (7):
The inductance value of the secondary compensation inductanceIt is determined by formula (8):
In formula (5), (6), (7) and (8),For the output voltage values of DC power supply (E), ω is system work angular frequency, IB
To set charging current, VBTo set charging voltage,Respectively primary coil and secondary inductance value.
The control switching switch two of controller two is closed, and system works in constant current mode, exports constant current to load, i.e.,
The constant charge current I of setting is provided to batteryB；It is suitble to battery charging initial stage to use.
The control switching switch two of controller two disconnects, and induction type wireless charging system works in constant voltage mode, system work
In constant voltage mode, constant voltage is exported to load, i.e., provides the constant charge voltage V of setting to batteryB；After being suitble to battery charging
Phase, cell voltage use when reaching charging setting voltage.
System output constant current and the theory analysis and circuit theory of constant voltage are in two schemes of the present invention:
Fig. 3, Fig. 4 are the system equivalent circuit of circuit topology of the present invention.According to the T-type equivalent circuit of Fig. 4, figure it is found that
If system work angular frequency is that capacitance is by ω for simplifying the analysisPrimary compensating electric capacity CPAnd inductance
Value isInductance L'PIt is equivalent to an inductance LPe, inductance value isMeet following relationship:
System input voltage can be derived from according to kirchhoffs lawElectric currentAnd output voltageElectric currentRelationship it is as follows:
Wherein, a12=a22=0, that is, show that system output voltage and electric current are unrelated with input current,
If flowing through the electric current of equivalent resistanceWith system input voltageRatio be Gi, system power can be obtained by formula (11)
Gain Gi:
In order to make GiDo not change with load and change, a should be enabled21In denominatorCoefficient be zero, it may be assumed that
A, B are substituted into formula (13), obtained:
To obtain the capacitance C of the primary total compensation capacitance under constant current output modeP, separately it is denoted asAre as follows:
Formula (15) are substituted into formula (12), modulus value obtains the current gain of system:
Similarly, system output voltage is still setWith input voltageRatio be Gv, system voltage can be obtained by formula (11) and increased
Beneficial Gv:
Make equivalent resistance RLEnd voltageIt is unrelated with load, it needs to meet a11In denominatorCoefficient be zero,
That is:
Formula A, B are substituted into formula (17), obtained:
To obtain the primary total compensation capacitance C under constant voltage output modePCapacitance
Formula (20) are substituted into formula (17), modulus value obtains the voltage gain of system:
The fundamental voltage output of voltage virtual value of inverter and the relationship of its input direct-current voltage are as follows:
The input voltage U of current rectifying and wave filtering circuitL, electric current ILFundamental wave virtual value and output voltage VB, electric current IBRelationship
Are as follows:
Formula (9), (10), (22) and (23) are substituted into formula (17), find out the capacitance of secondary compensation capacitor
Formula (9), (10), (22), (23) and (24) are substituted into formula (17), calculate secondary compensation inductance LLInductance value
Formula (9), (10) and (24) are substituted into formula (15), obtain the capacitor of the primary total compensation capacitance under constant current output mode
Value
Formula (9), (10), (24) and (25) are substituted into formula (20), obtain the primary total compensation capacitance under constant voltage output mode
CPCapacitance
Due to primary total compensation capacitance value required under constant current modeIt is always compensated with the primary needed under constant voltage mode
CapacitanceIt is of different sizes, so needing to increase additional capacitor and switching switch in primary circuit to change capacitor
Value, thus realize constant current and the switching of constant voltage mode, and additional capacitor can access circuit by two ways in parallel and serial.
The first scheme as shown in Figure 1, primary constant current capacitor CPCValue be equal toWhen switch one is closed, just
Grade additional serial capacitor CPSIt is short-circuited, the total capacitance value of constant current constant voltage switching circuit oneThe primary being then equal under constant current mode
Total compensation capacitance CPValueAnd so system works in constant current output mode when scheme lower switch one is closed；It is disconnected in switch one
When opening, primary constant current compensating electric capacity CPCWith primary additional serial capacitor CPSSeries connection, total capacitance valueIt is determined by formula (28)
Take suitable secondary additional serial capacitor CPSMakeValue be equal toThen constant current constant voltage switching circuit at this time
One total capacitance valueThe primary total compensation capacitance value being then equal under constant voltage modeSo when scheme lower switch one disconnects
System works in constant voltage output mode, and further, formula (26) and (27), which are substituted into formula (28), can acquire primary additional serial capacitor
CPSCapacitance are as follows:
To sum up, when one control switch one of controller is closed, system works in constant current charging mode；When controller one controls
When switch one disconnects, system works in constant-voltage charge mode.
Second scheme as shown in Figure 2, primary constant pressure capacitor CPVValue be equal toWhen switch two disconnects, just
Grade additional shunt capacitance CPPIt is open, the total capacitance value of constant current constant voltage switching circuit twoThe primary being then equal under constant voltage mode
Total compensation capacitance CPCapacitanceAnd so system works in constant voltage output mode when scheme lower switch two disconnects；It is opening
When closing two closures, primary constant pressure capacitor CPVWith primary additional shunt capacitance CPPParallel connection, total capacitance valueIt is determined by formula (30)
Take suitable primary additional shunt capacitance CPPMakeValue be equal toThen constant current constant voltage switching circuit at this time
Two total capacitance valueThe primary total compensation capacitance value being then equal under constant current modeSo when scheme lower switch two is closed
System works in constant voltage output mode, and further, formula (26) and (27), which are substituted into formula (30), can acquire primary additional shunt capacitance
CPPCapacitanceAre as follows:
To sum up, when two control switch two of controller is closed, system works in constant current charging mode；When controller two controls
When switch two disconnects, system works in constant-voltage charge mode.
Compared with prior art, the beneficial effects of the present invention are:
One, proposed by the present invention based on the constant current constant voltage induction type wireless charging system for becoming einer Primargrosse, in constant current constant voltage
The capacitor of two specific capacitance values determined by system parameter values in switching circuit, under the switching of switch, perseverance can be respectively obtained
Total compensation capacitance value needed under total compensation capacitance value and constant-voltage charge mode needed under current charge mode；So as to same
The constant current and constant voltage unrelated with load are exported under working frequency, meet battery initial stage constant-current charge, later period constant pressure is filled
The requirement of electricity.System works under a Frequency point, is not in frequency bifurcation, system the operation is stable.
Two, only the constant current constant voltage switching circuit that two capacitors and a switch form need to be added in primary circuit in the present invention,
Its circuit structure is simple, at low cost.The switching of simple control switch is only needed when work, not complicated control strategy；It is controlled
It makes simply, conveniently, reliably.
Three, after the circuit system parameter determines, the constant current and constant voltage unrelated with load and high frequency of output
Inverter output voltage is related, therefore can be real by the circuit in parallel after the system high-frequency inverter on the same high-frequency inverter
It now charges simultaneously to multiple batteries or charging equipment, greatly reduces the high-frequency inverter quantity when charging of more cell loads, drop
Low charging cost.
The present invention is further illustrated with reference to the accompanying drawings and detailed description.
Detailed description of the invention
Fig. 1 is the electrical block diagram of the embodiment of the present invention 1；
Fig. 2 is the electrical block diagram of the embodiment of the present invention 2；
Fig. 3 is equivalent circuit diagram of the invention.
Fig. 4 is T-type equivalent circuit diagram of the invention.
Specific embodiment
Embodiment 1
Fig. 1 is shown, the first specific embodiment of the invention is, a kind of based on the constant current constant voltage induction for becoming einer Primargrosse
Formula wireless charging system, is made of transmitting portion and receiving portion, and receiving portion includes sequentially connected secondary coil, secondary benefit
Repay capacitor, current rectifying and wave filtering circuit D, cell load Z；Transmitting portion includes sequentially connected DC power supply E, high-frequency inverter H, perseverance
Flow constant pressure switching circuit one and primary coil；It is characterized in that, being also serially connected between the high-frequency inverter H and primary coil
The composition of constant current constant voltage switching circuit one, the constant current constant voltage switching circuit one is:
Primary constant current capacitor C is successively sealed between high-frequency inverter H and primary coilPCWith primary additional serial capacitor CPS,
And in primary additional serial capacitor CPSUpper switching switch one in parallel；And the control terminal for switching switch one is connected with controller one.
In this example:
The primary constant current capacitor CPCCapacitanceIt is determined by formula (1):
The primary additional serial capacitor CPSCapacitanceIt is determined by formula (2):
The secondary compensation capacitor CSCapacitanceIt is determined by formula (3):
The secondary compensation inductance LLInductance valueIt is determined by formula (4): (4)
In formula (1), (2), (3) and (4),For the output voltage values of DC power supply E, ω is system work angular frequency, IBFor
Set charging current, VBTo set charging voltage,Respectively primary coil LPWith secondary coil LSInductance value.
Embodiment 2
Fig. 2 shows second of specific embodiment of the invention is, a kind of based on the constant current constant voltage induction for becoming einer Primargrosse
Formula wireless charging system, is made of transmitting portion and receiving portion, and receiving portion includes sequentially connected secondary coil, secondary benefit
Repay capacitor, current rectifying and wave filtering circuit D, cell load Z；Transmitting portion includes sequentially connected DC power supply E, high-frequency inverter H/ permanent
Flow constant pressure switching circuit two and primary coil；It is characterized in that, being also serially connected between the high-frequency inverter H and primary coil
The composition of constant current constant voltage switching circuit two, the constant current constant voltage switching circuit two is:
Primary constant pressure capacitor C is concatenated between the high-frequency inverter H and primary coilPV；Primary additional shunt capacitance CPP
Primary constant pressure capacitor C is then parallelly connected with after connecting with switching switch twoPVOn,；And switch the control terminal and controller two-phase of switch two
Even.
In this example:
The primary constant pressure capacitor CPVCapacitanceIt is determined by formula (5):
The additional shunt capacitance CPPCapacitanceIt is determined by formula (6):
The secondary compensation capacitor CSCapacitanceIt is determined by formula (7):
The secondary compensation inductance LLInductance valueIt is determined by formula (8):
In formula (5), (6), (7) and (8),For the output voltage values of DC power supply E, ω is system work angular frequency, IBFor
Set charging current, VBTo set charging voltage,Respectively primary coil LPWith secondary coil LSInductance value.
Claims (2)
1. it is a kind of based on the constant current constant voltage induction type wireless charging system for becoming einer Primargrosse, it is grouped by transmitting portion and receiving unit
At receiving portion includes sequentially connected secondary coil (LS), secondary compensation capacitor (CS), secondary compensation inductance (LL), rectification filter
Wave circuit (D), cell load (Z)；Transmitting portion includes sequentially connected DC power supply (E), high-frequency inverter (H), constant current perseverance
Press one (Q of switching circuit1) and primary coil (LP)；It is characterized in that, the high-frequency inverter (H) and primary coil (LP) it
Between be also serially connected with one (Q of constant current constant voltage switching circuit1), the one (Q of constant current constant voltage switching circuit1) composition be:
High-frequency inverter (H) and primary coil (LP) between successively seal in primary constant current capacitor (CPC) and primary additional serial capacitor
(CPS), and in primary additional serial capacitor (CPS) on switching one (S of switch in parallel1)；And switching one (S of switch1) control terminal with
One (K of controller1) be connected；
The primary constant current capacitor (CPC) capacitanceIt is determined by formula (1):
The primary additional serial capacitor (CPS) capacitanceIt is determined by formula (2):
Secondary compensation capacitor (the CS) capacitanceIt is determined by formula (3):
Secondary compensation inductance (the LL) inductance valueIt is determined by formula (4):
In formula (1), (2), (3) and (4),For the output voltage values of DC power supply (E), ω is system work angular frequency, IBTo set
Determine charging current, VBTo set charging voltage,Respectively primary coil (LP) and secondary coil (LS) inductance value, M
For primary coil (LP) and secondary coil (LS) between mutual inductance value.
2. it is a kind of based on the constant current constant voltage induction type wireless charging system for becoming einer Primargrosse, it is grouped by transmitting portion and receiving unit
At receiving portion includes sequentially connected secondary coil (LS), secondary compensation capacitor (CS), secondary compensation inductance (LL), rectification filter
Wave circuit (D), cell load (Z)；Transmitting portion includes sequentially connected DC power supply (E), high-frequency inverter (H), constant current perseverance
Press two (Q of switching circuit2) and primary coil (LP)；It is characterized in that, the high-frequency inverter (H) and primary coil (LP) it
Between be also serially connected with two (Q of constant current constant voltage switching circuit2), the two (Q of constant current constant voltage switching circuit2) composition be:
The high-frequency inverter (H) and primary coil (LP) between concatenate primary constant pressure capacitor (CPV)；Primary additional parallel electricity
Hold (CPP) and switching two (S of switch2) primary constant pressure capacitor (C is then parallelly connected with after series connectionPV) on, and switch two (S of switch2) control
End and two (K of controller2) be connected；
The primary constant pressure capacitor (CPV) capacitanceIt is determined by formula (5):
Additional shunt capacitance (the CPP) capacitanceIt is determined by formula (6):
Secondary compensation capacitor (the CS) capacitanceIt is determined by formula (7):
Secondary compensation inductance (the LL) inductance valueIt is determined by formula (8):
In formula (5), (6), (7) and (8),For the output voltage values of DC power supply (E), ω is system work angular frequency, IBTo set
Determine charging current, VBTo set charging voltage,Respectively primary coil (LP) and secondary coil (LS) inductance value, M
For primary coil (LP) and secondary coil (LS) between mutual inductance value.
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| CN107069983B (en) * | 2017-04-05 | 2020-02-18 | 西南交通大学 | Secondary variable parameter and variable structure induction type wireless charging system |
| CN110266113B (en) * | 2019-05-29 | 2021-02-12 | 北京航空航天大学 | Wireless power distribution system between spacecrafts and control method |
| CN111682627B (en) * | 2020-08-14 | 2020-11-17 | 深圳赫兹创新技术有限公司 | Anti-offset wireless charging circuit and control method |
| CN112260416B (en) * | 2020-10-29 | 2022-08-02 | 中国科学院电工研究所 | Constant-current constant-voltage induction type wireless charging system based on variable primary parameters |
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| CN104753152A (en) * | 2015-04-10 | 2015-07-01 | 东南大学 | Constant current-constant voltage composite topological sensing type charging system |
| CN105429313A (en) * | 2015-12-11 | 2016-03-23 | 中国矿业大学 | Wireless electric energy transmission system with switchable resonance compensation topology and control method thereof |
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| JP2005094862A (en) * | 2003-09-12 | 2005-04-07 | Tsubakimoto Chain Co | Contactless power feeding method and apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104753152A (en) * | 2015-04-10 | 2015-07-01 | 东南大学 | Constant current-constant voltage composite topological sensing type charging system |
| CN105429313A (en) * | 2015-12-11 | 2016-03-23 | 中国矿业大学 | Wireless electric energy transmission system with switchable resonance compensation topology and control method thereof |
Non-Patent Citations (1)
| Title |
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| 感应电能传输系统输出电压调压电路研究;孙跃;《电工技术学报》;20151231;第30卷;第226-230页 |
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