CN104578323A - Dynamic balance battery charging protection device - Google Patents
Dynamic balance battery charging protection device Download PDFInfo
- Publication number
- CN104578323A CN104578323A CN201510054724.9A CN201510054724A CN104578323A CN 104578323 A CN104578323 A CN 104578323A CN 201510054724 A CN201510054724 A CN 201510054724A CN 104578323 A CN104578323 A CN 104578323A
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- diode
- battery
- transformer
- resistance
- negative pole
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- 238000004804 winding Methods 0.000 claims description 19
- 230000001012 protector Effects 0.000 claims description 15
- 238000001514 detection method Methods 0.000 claims description 3
- 230000000087 stabilizing effect Effects 0.000 claims description 3
- 230000005611 electricity Effects 0.000 abstract description 2
- 238000007599 discharging Methods 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 6
- 229920006395 saturated elastomer Polymers 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001537 neural effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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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
- H02J7/0014—Circuits for equalisation of charge between batteries
- H02J7/0019—Circuits for equalisation of charge between batteries using switched or multiplexed charge circuits
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- H02J7/0026—
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- 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)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a dynamic balance battery charging protection device which is applicable to electric automobile battery packs formed by serial and parallel connection of a great quantity of single batteries. The single batteries are balanced independently according to different operation conditions so as to subject a whole battery pack to active and passive balance control. By means of the technical scheme, repeated charging and discharging of the batteries are prevented, saturation of electricity quantity of the single batteries is guaranteed to give full play to maximal utilization efficiency of the battery pack, and service lives of the batteries are effectively prolonged.
Description
Technical field
The present invention relates to accumulator protecting field, particularly a kind of dynamic equilibrium protector for battery charging.
Background technology
The power source of motor vehicle is storage battery, and energy and the voltage of single storage battery are limited, after needing battery in groups, could meet the energy demand of vehicle.Generally, in connection in series-parallel battery pack there is inconsistency in the chemical characteristic of cell, working temperature and ageing process etc., through repeatedly charge and discharge cycles, the state-of-charge of battery will produce difference, showing as monomer battery voltage disperses increasing, causes the performance of battery pack to be subject to extreme influence.In real process, when the monomer electricity that capacity is minimum is run out or is full of, electric discharge or the charging process of series battery terminate in advance, in the use procedure of electric automobile power battery group, cell performance is unbalanced is the key factor affecting battery pack work, therefore carries out Balance route to battery pack very necessary.
Summary of the invention
In order to solve the problem of prior art, embodiments provide dynamic equilibrium protector for battery charging, it comprises: voltage acquisition module, and for detecting the cell voltage of battery pack, described battery pack is connected by multiple battery cell or connection in series-parallel forms; Equalization control module, be connected with described voltage acquisition module, cell voltage for detecting according to described voltage acquisition module calculates the operating state of each battery cell, determine the battery cell of control to be equalized according to the operating state of each battery cell described, and produce MOSFET drive singal; And equalizer module, be connected respectively with described equalization control module and described battery pack, for carrying out energy management to the battery cell of described control to be equalized under the driving of described MOSFET drive singal.
According to dynamic equilibrium protector for battery charging as above, preferably, described dynamic equilibrium protector for battery charging also comprises: pulse signal generating circuit, being connected respectively with described equalization control module and described equalizer module, carrying out energy management to make described equalizer module according to the battery cell of described pulse signal to described control to be equalized for producing pulse signal under the control of described MOSFET drive singal, described pulse signal generating circuit has: the MOSFET of the armature winding of transformer, the first electric capacity, the second electric capacity, the first resistance, the second resistance, transformer receives described MOS drive singal, one end of the secondary winding of transformer is successively through the first electric capacity, first resistance, the negative pole of the first diode is connected with power supply ground with the positive pole of the first diode, one end of the secondary winding of described transformer is also connected through the triode of parallel connection and the 4th diode and power supply, the negative pole of described 4th diode is connected with one end of the secondary winding of described transformer, the positive pole of described 4th diode is connected with described power supply ground, the negative pole of described first diode is also connected with one end of described second resistance respectively with the positive pole of described second diode, the negative pole of described second diode and one end of described second electric capacity, one end of described 3rd resistance, the positive pole of described 3rd diode connects respectively, the other end of described second electric capacity and the other end of described 3rd resistance are all connected with described power supply ground, the negative pole of described 3rd diode is connected with the first power supply, the other end of the secondary winding of described transformer is connected with second source, the negative pole of described second diode is as pulse signal detection output.
According to dynamic equilibrium protector for battery charging as above, preferably, described first diode, the second diode and the 3rd diode are voltage stabilizing didoe.
The beneficial effect that the embodiment of the present invention is brought is as follows:
Equalizer module is according to the instruction of equalization control module, intelligent charge management is carried out to each cell, thus reach prevent battery repeat charge and discharge, ensure electric quantity of single batteries saturated, play the maximum service efficiency of battery pack, the object of effective extending battery life)
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of dynamic equilibrium protector for battery charging that the embodiment of the present invention provides.
Fig. 2 is a kind of zero circuit schematic diagram that the embodiment of the present invention provides;
Fig. 3 is the positive limit current waveform figure of the battery pack after adopting the embodiment of the present invention;
Fig. 4 is the positive polygonal voltage oscillogram of the battery pack after adopting the embodiment of the present invention;
Fig. 5 is the anti-limit current waveform figure of the battery pack after adopting the embodiment of the present invention;
Fig. 6 is the anti-limit current waveform figure of the battery pack after adopting the embodiment of the present invention.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.
See Fig. 1-2, embodiments provide a kind of dynamic equilibrium protector for battery charging, it comprises: voltage acquisition module, equalization control module and equalizer module.Voltage acquisition module is for detecting the cell voltage of battery pack, and battery pack is connected by multiple battery cell or connection in series-parallel forms; Equalization control module is connected with voltage acquisition module, cell voltage for detecting according to voltage acquisition module calculates the operating state of each battery cell, determine the battery cell of control to be equalized according to the operating state of each battery cell, and produce MOSFET drive singal; And equalizer module, be connected respectively with equalization control module and battery pack, carry out energy management for the battery cell treating Balance route under the driving of MOSFET drive singal.
Dynamic equilibrium protector for battery charging also comprises: pulse signal generating circuit, being connected respectively with equalization control module and equalizer module, carrying out energy management for producing pulse signal under the control of MOSFET drive singal with the battery cell making equalizer module and treat Balance route according to pulse signal, pulse signal generating circuit has: the MOSFET of the armature winding of transformer T, the first electric capacity C1, the second electric capacity C2, the first resistance R1, the second resistance R2, transformer T receives MOS drive singal, one end of the secondary winding of transformer is successively through the first electric capacity C1, first resistance R1, the negative pole of the first diode D1 is connected with power supply ground with the positive pole of the first diode D1, one end of the secondary winding of transformer is also connected through the triode Q of parallel connection and the 4th diode D4 and power supply, the negative pole of the 4th diode D4 is connected with one end of the secondary winding of transformer, the positive pole of the 4th diode D4 is connected with power supply ground, the negative pole of the first diode D1 is also connected with one end of the second resistance R2 respectively with the positive pole of the second diode D2, the negative pole of the second diode D2 and one end of the second electric capacity C2, one end of 3rd resistance R3, the positive pole of the 3rd diode D3 connects respectively, the other end of the second electric capacity C2 and the other end of the 3rd resistance R3 are all connected with power supply ground, the negative pole of the 3rd diode D3 is connected with the first power supply VCC, the other end of the secondary winding of transformer T is connected with second source V+, the negative pole of the second diode D2 is as pulse signal detection output DEGAUSS.Preferably, the first diode D1, the second diode D2 and the 3rd diode D3 are voltage stabilizing didoe.
Below the use procedure of dynamic equilibrium protector for battery charging is described in detail:
This device continues to detect cell voltage by voltage acquisition module, and voltage signal is real-time transmitted to control module by MultiCAN, the MCU of control module is according to measuring voltage value and related measurement data, by dynamic programming and artificial neural net Mathematical Modeling, calculate the operating state of each battery, determine balanced object, startup and duration, then produce MOSFET drive singal and drive equalizer module to carry out energy management to power battery pack (namely by the battery pack that multiple battery cell is connected or connection in series-parallel is formed).Equalizer energy management is intended to set up a kind of zero circuit, to saturated cell, makes winding voltage and energy zero, to ensure battery charge efficiency, extending battery life.As shown in Figure 2.After the MOSFET of primary winding disconnects, primary current constantly reduces, the voltage of armature winding non-same polarity rises rapidly simultaneously, now the first electric capacity C1 and the second electric capacity C2 is by resistance R1, R2, R3 quick charge, the voltage at electric capacity two ends also constantly increases, owing to there is clamp circuit, the voltage of the second electric capacity C2 can only rise to 5V, and keep a period of time, until the charging process of the second electric capacity C2 terminates, begin through resistance R3 electric discharge and enter into discharge regime, the voltage keeps of the second electric capacity C2 is reduced to 0V afterwards, therefore this circuit can when the energy zero of primary winding, detect output port at DEGAUSS and produce a 5V pulse voltage signal, therefore this circuit also becomes pulse signal generating circuit, after pulse signal being detected, equalizer module is according to the instruction of equalization control module, intelligent charge management is carried out to each cell, thus reach and prevent battery from repeating to fill, electric discharge, guarantee electric quantity of single batteries is saturated, play the maximum service efficiency of battery pack, the object of effective extending battery life.
Fig. 3-6 is experimental result (being actual measurement in figure) and the oscillogram of theoretical value (for emulating in figure) of battery pack after adopting the embodiment of the present invention, is respectively positive limit (i.e. former limit) current waveform figure, positive limit (i.e. former limit) voltage oscillogram, anti-limit (i.e. secondary) current waveform figure, anti-limit (i.e. secondary) voltage oscillogram.
During practical application, voltage acquisition module can based on LTC6802 chip design, and in 13ms, just can complete the voltage detecting of battery pack based on this, overall measure error is no more than 0.25%.What equalization control module adopted is Infineon XC2238N high-performance microprocessor.
In sum, the beneficial effect that brings of the embodiment of the present invention is as follows:
Equalizer module, according to the instruction of equalization control module, carries out intelligent charge management to each cell, thus prevents battery from repeating charge and discharge, ensures that electric quantity of single batteries is saturated, plays the maximum service efficiency of battery pack, effective extending battery life.
The unspecified part of the present invention belongs to general knowledge as well known to those skilled in the art.
Claims (3)
1. a dynamic equilibrium protector for battery charging, is characterized in that, described dynamic equilibrium protector for battery charging comprises:
Voltage acquisition module, for detecting the cell voltage of battery pack, described battery pack is connected by multiple battery cell or connection in series-parallel forms;
Equalization control module, be connected with described voltage acquisition module, cell voltage for detecting according to described voltage acquisition module calculates the operating state of each battery cell, determine the battery cell of control to be equalized according to the operating state of each battery cell described, and produce MOSFET drive singal; With
Equalizer module, is connected respectively with described equalization control module and described battery pack, for carrying out energy management to the battery cell of described control to be equalized under the driving of described MOSFET drive singal.
2. dynamic equilibrium protector for battery charging according to claim 1, it is characterized in that, described dynamic equilibrium protector for battery charging also comprises: pulse signal generating circuit, being connected respectively with described equalization control module and described equalizer module, carrying out energy management to make described equalizer module according to the battery cell of described pulse signal to described control to be equalized for producing pulse signal under the control of described MOSFET drive singal;
Described pulse signal generating circuit has: the MOSFET of the armature winding of transformer, the first electric capacity, the second electric capacity, the first resistance, the second resistance, transformer receives described MOS drive singal
One end of the secondary winding of transformer is successively through the first electric capacity, first resistance, the negative pole of the first diode is connected with power supply ground with the positive pole of the first diode, one end of the secondary winding of described transformer is also connected through the triode of parallel connection and the 4th diode and power supply, the negative pole of described 4th diode is connected with one end of the secondary winding of described transformer, the positive pole of described 4th diode is connected with described power supply ground, the negative pole of described first diode is also connected with one end of described second resistance respectively with the positive pole of described second diode, the negative pole of described second diode and one end of described second electric capacity, one end of described 3rd resistance, the positive pole of described 3rd diode connects respectively, the other end of described second electric capacity and the other end of described 3rd resistance are all connected with described power supply ground, the negative pole of described 3rd diode is connected with the first power supply, the other end of the secondary winding of described transformer is connected with second source, the negative pole of described second diode is as pulse signal detection output.
3. dynamic equilibrium protector for battery charging according to claim 2, is characterized in that, described first diode, the second diode and the 3rd diode are voltage stabilizing didoe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510054724.9A CN104578323A (en) | 2015-02-03 | 2015-02-03 | Dynamic balance battery charging protection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510054724.9A CN104578323A (en) | 2015-02-03 | 2015-02-03 | Dynamic balance battery charging protection device |
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| CN104578323A true CN104578323A (en) | 2015-04-29 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105634058A (en) * | 2016-01-22 | 2016-06-01 | 广东志成冠军集团有限公司 | An intelligent equalization method and intelligent equalization system for a battery pack |
| CN110758119A (en) * | 2018-11-08 | 2020-02-07 | 凌飞 | Electric automobile power supply system, control method thereof and range-extended electric automobile |
-
2015
- 2015-02-03 CN CN201510054724.9A patent/CN104578323A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105634058A (en) * | 2016-01-22 | 2016-06-01 | 广东志成冠军集团有限公司 | An intelligent equalization method and intelligent equalization system for a battery pack |
| CN105634058B (en) * | 2016-01-22 | 2018-05-25 | 广东志成冠军集团有限公司 | Intelligent equalization method and intelligent equalization system for battery pack |
| CN110758119A (en) * | 2018-11-08 | 2020-02-07 | 凌飞 | Electric automobile power supply system, control method thereof and range-extended electric automobile |
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Application publication date: 20150429 |
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