CN108879834A - The two-way active equalization circuit of battery - Google Patents
The two-way active equalization circuit of battery Download PDFInfo
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- CN108879834A CN108879834A CN201810674981.6A CN201810674981A CN108879834A CN 108879834 A CN108879834 A CN 108879834A CN 201810674981 A CN201810674981 A CN 201810674981A CN 108879834 A CN108879834 A CN 108879834A
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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
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Abstract
The present invention discloses a kind of two-way active equalization circuit of battery, including：Translation circuit：Including transformer and pwm control circuit, transformer includes primary side winding winding and vice-side winding winding, and primary side winding connects battery, vice-side winding connecting single batteries end；Pwm control circuit includes the first metal-oxide-semiconductor and the second metal-oxide-semiconductor, and the first metal-oxide-semiconductor is connect to control transformer primary winding accumulation of energy with primary side winding, and the second metal-oxide-semiconductor is connect with vice-side winding, to control transformer secondary winding accumulation of energy；Driver：Including primary side driver and secondary side driver, to drive the opening and closing of the first metal-oxide-semiconductor and the second metal-oxide-semiconductor；Signal generator：It is connect with driver, to send driving signal to driver.The present invention increases separately metal-oxide-semiconductor by the primary side winding and vice-side winding in transformer to carry out accumulation of energy, can bi-directional energy, realize efficient active equalization；Constant power output can be realized when positive charge；At low cost, circuit structure is simple.
Description
Technical field
The present invention relates to field of circuit technology more particularly to a kind of two-way active equalization circuits of battery.
Background technique
Concatenated battery, charge and discharge all in the case where, final dump energy differs increasing, main cause
It is that the internal resistance of cell is inconsistent to cause, internal resistance has heat power lost.Since internal resistance is inconsistent, heat power lost with regard to different,
The dump energy for eventually leading to single battery is inconsistent.Because battery is in use, negative electrode material crystalline state can become
Different, diaphragm pore can also block, these variation be it is associated with service condition (temperature, vibration, electric current), be difficult to quantify
Get off, internal resistance variation tendency can only also have a probably estimation.Under natural service condition, it is the mistake of a certainty that consistency, which is deteriorated,
Journey.Another causes the unbalanced factor of energy to be exactly leaking electricity certainly for battery itself.Because differing from electric leakage, lead to battery
Dump energy difference becomes larger.
Being suitble to extensive, high-capacity battery group balanced way to have mainly has two classes：Passive equilibrium is generally put using resistance
The mode of heat discharges high-capacity battery " electricity having more ", to achieve the purpose that equilibrium, circuit is simple and reliable, cost
It is lower, but battery efficiency is relatively low.Extra electricity is transferred to high capacity battery core when active equalization charges, when electric discharge will be extra
Electricity is transferred to low capacity battery core, high-efficient, electric current is big, quick, but cost is higher, and circuit is complicated, and reliability is low.
Summary of the invention
To solve the above-mentioned problems, the present invention discloses a kind of two-way active equalization circuit of battery, can bi-directional energy, it is real
Now efficient active equalization, at low cost, circuit structure is simple, while can substantially Reduced Design.
In order to achieve the above objectives, the present invention discloses a kind of two-way active equalization circuit of battery, including：
Translation circuit：Including transformer and pwm control circuit, the transformer includes primary side winding winding and vice-side winding
Winding, the primary side winding connect battery, vice-side winding connecting single batteries end；The pwm control circuit includes the
One metal-oxide-semiconductor and the second metal-oxide-semiconductor, the first metal-oxide-semiconductor are connect to control transformer primary winding accumulation of energy, the second metal-oxide-semiconductor with primary side winding
It is connect with vice-side winding, to control transformer secondary winding accumulation of energy；
Driver：Including primary side driver and secondary side driver, the primary side driver is connect with the first metal-oxide-semiconductor, to drive
The opening and closing of dynamic first metal-oxide-semiconductor, the pair side driver connects with the second metal-oxide-semiconductor, with the opening of the second metal-oxide-semiconductor of driving with
Closure；
Signal generator：It is connect with driver, to send driving signal to driver.
Further, the signal generator includes primary side winding signal generator and vice-side winding signal generator, institute
It states primary side winding signal generator to connect with primary side driver, to give primary side actuator drive signal, the vice-side winding signal
Generator is connect with secondary side driver, to give secondary side actuator drive signal.
It further, further include isolation circuit, the isolation circuit is connect with signal generator and secondary side driver, is isolated
Primary side driver and secondary side driver.
It further, further include isolation voltage sample circuit, isolation voltage sample circuit one end and signal generator
Connection, the other end are connect with battery cell end.
It further, further include synchronous rectifying controller, the synchronous rectifying controller is controlled including the first synchronous rectification
Device and the second synchronous rectifying controller, first synchronous rectifying controller are connect with primary side driver, described second synchronize it is whole
Stream controller is connect with secondary side driver.
Further, first metal-oxide-semiconductor and the second metal-oxide-semiconductor are respectively N-channel, and source electrode ground connection drains and connects translation circuit.
Further, the signal generator is the signal generator of fixed duty cycle.
Further, further include benchmark amplifying circuit, the benchmark amplifying circuit respectively with the primary side winding of translation circuit
It is connected with vice-side winding.
Further, the two-way active equalization circuit of the battery works in dcm mode.
Compared with prior art, the present invention has following advantage：The two-way active equalization circuit of battery disclosed by the invention leads to
It crosses primary side winding and vice-side winding in transformer and increases separately metal-oxide-semiconductor to control transformer winding accumulation of energy, it can bi-directional energy
Amount, realizes efficient active equalization；Constant power output can be realized when positive charge；At low cost, circuit structure is simple, while can be with
Substantially Reduced Design；Control circuit and loop compensation design without considering complicated can after increasing simple protection circuit
High by property, since flyback works in DCM mode, volume of transformer can do small, it is easy to accomplish integrated or flat surface transformer.
Detailed description of the invention
Above-mentioned and/or additional aspect and advantage of the invention will become from the following description of the accompanying drawings of embodiments
Obviously and it is readily appreciated that, wherein：
Fig. 1 is first embodiment of the invention structural schematic diagram；
Fig. 2 is current waveform figure of first embodiment of the invention under the conditions of positive charge；
Fig. 3 is that first embodiment of the invention exports charging current and output unit cell voltage value；
Fig. 4 is the current waveform figure under first embodiment of the invention back discharge state；
Fig. 5 is the output electric current and output unit cell voltage value relation value of first embodiment of the invention back discharge；
Fig. 6 is second embodiment of the invention circuit diagram；
Fig. 7 is third embodiment of the invention circuit diagram；
Fig. 8 is fourth embodiment of the invention circuit diagram；
Fig. 9 is fifth embodiment of the invention circuit diagram.
Specific embodiment
The present invention is further described with exemplary embodiment with reference to the accompanying drawing, wherein identical label in attached drawing
All refer to identical component.In addition, if the detailed description of known technology is for showing the invention is characterized in that unnecessary
, then it omits it.The embodiments described below with reference to the accompanying drawings are exemplary, for explaining only the invention, and cannot
It is construed to limitation of the present invention.
Those skilled in the art of the present technique are appreciated that unless expressly stated, singular " one " used herein, " one
It is a ", " described " and "the" may also comprise plural form.It is to be further understood that being arranged used in specification of the invention
Diction " comprising " refer to that there are the feature, integer, step, operation, element and/or component, but it is not excluded that in the presence of or addition
Other one or more features, integer, step, operation, element, component and/or their group.It should be understood that when we claim member
Part is " connected " or when " coupled " to another element, it can be directly connected or coupled to other elements, or there may also be
Intermediary element.In addition, " connection " used herein or " coupling " may include being wirelessly connected or wirelessly coupling.It is used herein to arrange
Diction "and/or" includes one or more associated wholes for listing item or any cell and all combinations
The direction term on relational terms such as first and second and the like and "upper" "lower" " left side " " right side ", is used merely to
It distinguishes one entity or operation from another entity or operation, without necessarily requiring or implying these entities or behaviour
There are any this actual relationship, sequence and directions between work.
Please referring to Fig. 1-Fig. 3, the present invention discloses a kind of present invention and discloses a kind of two-way active equalization circuit of battery, including：
Translation circuit：Including transformer T, the primary side winding T1 connection battery of transformer T, vice-side winding T2 connection battery
Monomer end；
Pwm control circuit：Including the first metal-oxide-semiconductor Q1 and the second metal-oxide-semiconductor Q2, the first metal-oxide-semiconductor Q1 is connect with primary side winding T1
To control the primary side winding T1 accumulation of energy of transformer T, the second metal-oxide-semiconductor Q2 is connect with vice-side winding T2, to control the secondary side of transformer T
Winding T2 accumulation of energy；
Driver：Connect including primary side driver A1 and pair side driver A2, the primary side driver A1 and the first metal-oxide-semiconductor Q1
It connects, to drive the opening and closing of the first metal-oxide-semiconductor Q1, the pair side driver A2 is connect with the second metal-oxide-semiconductor Q2, to drive second
The opening and closing of metal-oxide-semiconductor Q2；
Signal generator：It is connect with driver, to send driving signal to driver.
In the present embodiment, the signal generator includes primary side winding T1 signal generator and vice-side winding T2 signal hair
Raw device, the primary side winding T1 signal generator are connect with primary side driver A1, described to give primary side driver A1 driving signal
Vice-side winding T2 signal generator is connect with pair side driver A2, to give secondary side driver A2 driving signal.
In the present invention, the first metal-oxide-semiconductor Q1 and the second metal-oxide-semiconductor Q2 are respectively N-channel, and source electrode connects translation circuit, leakage
Pole ground connection, grid connect driver, are also connected with a first diode D1 and the second diode D2 between the drain electrode of source electrode core,
The anode of first diode D1 is connect with the source electrode of the first metal-oxide-semiconductor Q1, and cathode and the first metal-oxide-semiconductor Q1 drain electrode connect, the two or two pole
The anode of pipe D2 is connect with the source electrode of the second metal-oxide-semiconductor Q2Q2, and cathode is connect with the drain electrode of the second metal-oxide-semiconductor Q2Q2.
The two-way active equalization circuit of battery in the present embodiment works under DCM (discontinuous conduct mode) mode.DCM mould
The principle of formula is：Loading hour primary and secondary two sides electric current is respectively to rise trigonometric sum to decline triangular wave, solid if it is switching frequency
Fixed independent-excited power supply, switching tube does not turn on also when secondary finishes magnetic energy release, and at this moment primary and secondary switching device is turned off, line
Circle generates damped oscillation with parasitic capacitance, and coil both end voltage is lower than output voltage, secondary diode shutdown, and primary and secondary is turned off
When coil oscillatory extinction it is slower, although voltage is higher at this time, electric current is small, until switching tube is connected again, so recycles
Go down.It is not singly leakage inductance, so frequency of oscillation is lower, which compares switching tube since participate in oscillation is coil inductance
The spike frequency of oscillation of shutdown moment is much lower, and the spike of switching tube shutdown moment is that the high frequency that leakage inductance is generated with distribution capacity declines
Vibration damping is swung.If it is RCC auto-excitation type power supply, secondary magnetic energy release finish after be transferred to switching tube conducting phase at once, without two sides
The damped oscillation process being turned off is at this time BCM critical conduction mode.
Circuit structure based on first embodiment of the invention, its working principle is that, active equalization circuit is designed in DCM mode
Under, when positive charge, the primary side winding signal generator B1 of primary side winding T1 fixed duty cycle is given by primary side driver A1
The first metal-oxide-semiconductor Q1 of primary side winding T1 provides driving signal.When first metal-oxide-semiconductor Q1 is connected, encouraged by primary side winding transformer T1
Magnetic puts aside energy, and transformer T energy, which must be flowed, after the first metal-oxide-semiconductor Q1 shutdown is given to output battery by the second diode D2 release
Monomer end.Due to working in dcm mode, each periodic pressure oscillation device T will be not present so energy transmission gives vice-side winding T2
Dump energy.The vice-side winding signal generator B2 of vice-side winding T2 fixed duty cycle stops working.
When back discharge, primary side winding signal generator B1 stops working, and vice-side winding signal generator B2 passes through pair
Side driver A2 provides driving signal when the 2nd MOSQ2 is connected to the second metal-oxide-semiconductor Q2 of vice-side winding T2 and passes through transformer T's
Vice-side winding T2 winding excitation puts aside energy, and transformer T energy must be flowed through first diode D1 after the second metal-oxide-semiconductor Q2 shutdown
Release is given to accumulator terminal.Electric discharge working condition is consequently formed.Due to working in dcm mode, each periodic pressure oscillation device T will be
So energy transmission gives vice-side winding T2, dump energy is not present.
Although there is no feedback control loop in the program, may be implemented to transmit energy bi-direction controlledly, specific current relationship
It can be obtained according to lower section formula.
Referring to Fig. 2, Don is Q1 conducting dutycycle for positive working condition current waveform figure；Doff1 is that D2 conducting accounts for
Empty ratio；Doff2 Q1 turn off duty ratio.(Doff2 > Doff1).T is a switch periods.
Wherein Np is primary side winding T1 umber of turn, and Ns is vice-side winding T2 umber of turn, and Lp is Np winding sensibility reciprocal, and Ls is
The sensibility reciprocal of vice-side winding T2 winding.Vin is primary side winding T1 battery input voltage, and Vo is monomer battery voltage, and Io is monomer
Battery charge.
Following formula is obtained according to inductance equation:
It is obtained according to transformer T winding current proportionate relationship：
It is obtained according to transformer T winding sensibility reciprocal relationship：
D2 turn-on time is obtained according to inductance equation：
It is obtained according to electric current average integral：
The control switch frequency of Fs representation signal generator；
It is brought by above-mentioned formula：
Output electric current is obtained if it have been determined that working and can also directly be calculated by the following formula under DCM mode.
Due to primary side winding T1 exciting current meeting reset-to-zero under DCM mode, then obtained according to conservation of energy formula：
Two kinds of calculations are obtained a result unanimously.
It is lost it should be noted that the above calculation formula has ignored efficiency, practical calculate need to be multiplied by conversion efficiency.
Thus formula can be seen that the situation fixed in input battery voltage Vin and frequency fs and duty ratio Don
Under, monomer voltage Vo is inversely proportional with output charging current Io.When battery cell positive charge, battery cell voltage Vo is higher, fills
Electric current Io is then smaller, and vice versa.It is electric with output charging respectively such as to input battery voltage, duty ratio, frequency for other parameters
The relationship of stream Io can also be obtained according to above-mentioned formula.
Example explanation：
According to hypothesis parameter：
Lp=10uH, Vin=12V；Np=8；Ns=3；Fs=100kHz；Don=0.25；
It can be obtained by calculating in detail
Referring to Fig. 3, for the relationship of output charging current and output unit cell voltage value, when monomer battery voltage is 4V
When, charging current 1.125A；When cell voltage is 3V, charging current 1.5A；When cell voltage is 2V, charging current
For 2.25A.Realize constant power output.
Larger current quick charge is needed when monomer voltage is low, then smaller current charges when voltage is higher.Due to master
Dynamic equilibrium is intended to balance the voltage between more piece single battery, without battery to be full of.Therefore the operating mode meets reality
Active equalization application environment.
It is calculated by following formula, when monomer voltage is equal to 1.5V, transformer T enters critical conduction mode, if
When monomer voltage is less than 1.5V, transformer T enters electric current continuous operation mode (CCM), and transformer T dump energy is not reduced to zero,
Saturation is after will lead to multiple periods there are remanent magnetism to damage.
The problem can be avoided to occur by calculating and made allowance in actual application.
Work when to avoid situation appearance from then needing to avoid the occurrence of less than 1.5V voltage, and there are some surpluses.Such as limit
The above are safety operation areas in 2V for system.
But, due to the application of active equalization, outputting and inputting is battery, and there is no the CCM moulds that starting is climbed
Formula works normally the risk being not present into CCM.It, then can be on secondary side if you need to consider the reliability under the abnormal conditions such as hot plug
Winding T2 increases simple overcurrent protection electric current.
Referring to Fig. 4, being back discharge Working state analysis：
The two-way flyback converter topology, input is symmetrical with output, therefore when output single battery discharges to battery, electricity
As long as stream work is in dcm mode, following formula can also be obtained by above-mentioned principle.
Vice-side winding T2 peak point current is obtained according to inductance equation：
Vice-side winding T2 electric discharge average current：
Note：Vo is vice-side winding T2 cell voltage in formula, and Vin is then the 12V battery voltage of primary side winding T1,
Don is Q2 duty ratio, and Ls is secondary winding inductance amount, and Ts is switch periods.
Thus formula can be seen that the situation fixed in import and export battery voltage Vin and frequency fs and duty ratio Don
Under, monomer voltage Vo is directly proportional to output discharge current Io.When battery cell back discharge, battery cell voltage Vo is higher, puts
Electric current Io is then bigger, and vice versa.It is electric with output charging respectively such as to input battery voltage, duty ratio, frequency for other parameters
The relationship of stream Io can also be obtained according to above-mentioned formula.
Example explanation：
According to hypothesis parameter：
Lp=10uH, Vin=12V；Np=8；Ns=4；Fs=100kHz；Don=0.35
Referring to Fig. 5,
When monomer battery voltage is 2V, discharge current 0.8711A；When cell voltage is 3V, discharge current is
1.307A；When cell voltage is 4V, discharge current 1.742A.
Need low discharging current balanced when monomer voltage is low, then larger current charges when voltage is higher.Due to actively
Equilibrium is intended to balance the voltage between more piece single battery, and it is not absolutely required to by battery constant-current discharge.Therefore the operating mode is
Meet the application environment demand of practical active equalization.
After setting parameter, if cell voltage is greater than certain value, possible primary side winding T1 can not release transformation
After all energy of device T, transformer T magnetic saturation damage will lead to by the accumulation of multiple periodical energies.
To avoid the problem from occurring, certain surplus can be retained by calculating in actual application.
Primary side winding T1 allows and the peak inrush current that can be released is：
Converting vice-side winding T2 maximum battery voltage is：
Have above-mentioned, when cell voltage is greater than 8.367V, transformer T has saturation risk, therefore needs during same design
Consider certain surplus.
The case where being greater than 5V is not present in actual battery, such as needs to consider the reliability under hot plug abnormal conditions, then needs
To increase current foldback circuit (can design with the protection electrical combination of positive charge) in vice-side winding T2.
Further, in a second embodiment, referring to Fig. 6, further including isolation circuit G, isolation circuit G can be optocoupler
Circuit is closed, the isolation circuit G is connect with signal generator and pair side driver A2, and isolation primary side driver A1 and secondary side drive
Device A2.And fixed duty signal can be by single-chip microcontroller output or the output of other signals generator.
Further, in the third embodiment, referring to Fig. 7, further including isolation voltage sample circuit C, the isolation electricity
Pressure one end sample circuit C is connect with signal generator, and the other end is connect with battery cell end.It is gone by compensating frequency/duty ratio
Amendment output electric current, although voltage fluctuation easily occurs in battery cell side, accounts for realize charge and discharge constant current by adjusting difference
Sky, to realize constant current charge-discharge under each voltage status, passes through the calculated value of design phase or the test of production phase than lower output
The relation table of data available duty ratio and monomer battery voltage, and be written in software program.
Increase isolation voltage Acquisition Circuit C in the embodiment, battery cell electricity will be exported by isolation voltage sample circuit C
The acquisition of signal input generator is pressed, duty ratio corresponding is found by corresponding table look-up of software program, to realize constant current
Charge and discharge, signal generator herein can be the single-chip microcontroller with processing capacity.
Further, referring to Fig. 8, further including synchronous rectifying controller in the fourth embodiment, the synchronous rectification control
Device processed include the first synchronous rectifying controller Z1 and the second synchronous rectifying controller Z2, the first synchronous rectifying controller Z1 with
The A1 connection of primary side driver, the second synchronous rectifying controller Z2 are connect with pair side driver A2.
According to above-mentioned rational formula it is found that constant current charge-discharge also may be implemented by adjusting frequency fs, therefore adopt electric in MCU
After the voltage of pond monomer side can by compensate frequency, and be written in program be frequency and battery cell voltage relationship table.
Further, referring to Fig. 9, the 5th embodiment, further includes benchmark amplifying circuit, the benchmark amplifying circuit difference
It is connect with the primary side winding T1 of translation circuit and vice-side winding T2.It is specifically to be provided on the source electrode of the second metal-oxide-semiconductor Q2 point
Leakage resistance R, shunt resistance R are connect with benchmark amplifying circuit J1, benchmark amplifying circuit J1 and isolation circuit G circuit connection, isolation
Circuit G can use optical coupling isolation circuit, and isolation circuit G is connect with primary side driver A1, primary side driver A1 and the first MOS
The grid of pipe Q1 connects.
Although having been illustrated with some exemplary embodiments of the invention above, those skilled in the art will be managed
Solution can make a change these exemplary embodiments, this hair in the case where not departing from the principle or spirit that the present invention invents
The range of bright invention is defined by the claims and their equivalents.
Claims (8)
1. a kind of two-way active equalization circuit of battery, which is characterized in that including：
Translation circuit：Including transformer and pwm control circuit, the transformer include primary side winding winding and vice-side winding around
Group, the primary side winding connect battery, vice-side winding connecting single batteries end；The pwm control circuit includes first
Metal-oxide-semiconductor and the second metal-oxide-semiconductor, the first metal-oxide-semiconductor are connect to control transformer primary winding accumulation of energy with primary side winding, the second metal-oxide-semiconductor with
Vice-side winding connection, to control transformer secondary winding accumulation of energy；
Driver：Including primary side driver and secondary side driver, the primary side driver is connect with the first metal-oxide-semiconductor, to drive the
The opening and closing of one metal-oxide-semiconductor, the pair side driver are connect with the second metal-oxide-semiconductor, play open and close with the second metal-oxide-semiconductor of driving
It closes；
Signal generator：It is connect with driver, to send driving signal to driver.
2. the two-way active equalization circuit of battery according to claim 1, which is characterized in that the signal generator includes original
Side winding signal generator and vice-side winding signal generator, the primary side winding signal generator are connect with primary side driver,
To give primary side actuator drive signal, the vice-side winding signal generator is connect with secondary side driver, to give secondary side driver
Driving signal.
3. the two-way active equalization circuit of battery according to claim 1, which is characterized in that it further include isolation circuit, it is described
Isolation circuit is connect with signal generator and secondary side driver, isolation primary side driver and secondary side driver.
4. the two-way active equalization circuit of battery according to claim 1, which is characterized in that further include isolation voltage sampling electricity
Road, isolation voltage sample circuit one end are connect with signal generator, and the other end is connect with battery cell end.
5. the two-way active equalization circuit of battery according to claim 1, which is characterized in that further include synchronous rectification control
Device, the synchronous rectifying controller include the first synchronous rectifying controller and the second synchronous rectifying controller, and described first is synchronous
Commutation controller is connect with primary side driver, and second synchronous rectifying controller is connect with secondary side driver.
6. the two-way active equalization circuit of battery according to claim 1, which is characterized in that the signal generator is to fix
The signal generator of duty ratio.
7. the two-way active equalization circuit of battery according to claim 1, which is characterized in that it further include benchmark amplifying circuit,
The benchmark amplifying circuit is connect with the primary side winding of translation circuit and vice-side winding respectively.
8. the two-way active equalization circuit of battery according to claim 1, which is characterized in that the two-way active equalization of battery
Circuit works in dcm mode.
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| CN201810674981.6A CN108879834A (en) | 2018-06-27 | 2018-06-27 | The two-way active equalization circuit of battery |
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| CN201810674981.6A CN108879834A (en) | 2018-06-27 | 2018-06-27 | The two-way active equalization circuit of battery |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111262445A (en) * | 2020-03-11 | 2020-06-09 | 南京奥云德电子科技有限公司 | Isolated bidirectional DC-DC converter |
| CN112701746A (en) * | 2020-12-11 | 2021-04-23 | 珠海格力电器股份有限公司 | Battery equalization control method and device, storage medium and electronic device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102368628A (en) * | 2011-11-25 | 2012-03-07 | 杭州富特科技有限公司 | Intelligent balance device of power batteries of electric vehicle |
| CN103944240A (en) * | 2014-05-09 | 2014-07-23 | 重庆大学 | Bus-based battery pack equalizer circuit and control circuit thereof |
| CN104935033A (en) * | 2015-05-19 | 2015-09-23 | 江苏金帆电源科技有限公司 | Storage battery formation processing and charging/discharging circuit and control method thereof |
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2018
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102368628A (en) * | 2011-11-25 | 2012-03-07 | 杭州富特科技有限公司 | Intelligent balance device of power batteries of electric vehicle |
| CN103944240A (en) * | 2014-05-09 | 2014-07-23 | 重庆大学 | Bus-based battery pack equalizer circuit and control circuit thereof |
| CN104935033A (en) * | 2015-05-19 | 2015-09-23 | 江苏金帆电源科技有限公司 | Storage battery formation processing and charging/discharging circuit and control method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111262445A (en) * | 2020-03-11 | 2020-06-09 | 南京奥云德电子科技有限公司 | Isolated bidirectional DC-DC converter |
| CN111262445B (en) * | 2020-03-11 | 2022-12-20 | 南京奥云德电子科技有限公司 | Isolated bidirectional DC-DC converter |
| CN112701746A (en) * | 2020-12-11 | 2021-04-23 | 珠海格力电器股份有限公司 | Battery equalization control method and device, storage medium and electronic device |
| CN112701746B (en) * | 2020-12-11 | 2023-10-03 | 珠海格力电器股份有限公司 | Battery equalization control method and device, storage medium and electronic device |
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