CN209119861U - A kind of active equalization control system based on lithium ion battery - Google Patents
A kind of active equalization control system based on lithium ion battery Download PDFInfo
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- CN209119861U CN209119861U CN201822169174.7U CN201822169174U CN209119861U CN 209119861 U CN209119861 U CN 209119861U CN 201822169174 U CN201822169174 U CN 201822169174U CN 209119861 U CN209119861 U CN 209119861U
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Abstract
The utility model provides the active equalization control system based on lithium ion battery, including Battery control module and battery balanced module；Battery control module includes microcomputer control module, Current Voltage acquisition module, temperature collecting module, and microcomputer control module is connect with Current Voltage acquisition module, temperature collecting module respectively；Current Voltage acquisition module, temperature collecting module are connected with corresponding battery cell respectively, and Current Voltage acquisition module and temperature collecting module are as peripheral detection circuit；Battery balanced module includes electric quantity balancing circuit, electric quantity balancing circuit is connect with microcomputer control module, for controlling the switch state in electric quantity balancing circuit, and electric quantity balancing circuit is connected with corresponding battery cell, as balanced topological circuit, for carrying out electricity active equalization to battery cell during charging and discharging.Classroom lighting control system provided by the embodiment of the utility model.The utility model can effectively improve the stability and equalization efficiency of battery balanced control.
Description
Technical field
The utility model relates to battery technology fields, control more particularly, to a kind of active equalization based on lithium ion battery
System.
Background technique
Battery is most common energy-storage travelling wave tube in all kinds of electric cars, in order to ensure cell safety and integrated vehicle control tactics
It executing, the battery management system exploitation of electric car is always research hotspot in recent years, especially electric quantity balancing management system,
The key operated normally for vehicle complete vehicle system is significant with the substrate of cell heat management system.
Currently, main electric quantity balancing technology divides two major classes: active equalization technology and passive balancing technique.Passive balancing technique
The advantages of be that circuit is simple, reliable, at low cost, the disadvantage is that the small consumption energy of electric current；And active equalization technology then have electric current it is big,
The advantages that balancing speed is fast, high-efficient, the disadvantage is that universal circuit is complicated, system bulk is big, at high cost, relative reliability compares
It is low.Nevertheless, active equalization technology is popular with the performance of its superior energy conservation and continuation of the journey, and market huge legendary turtle head is occupied
Trend.But currently on the market, there are still defects for active equalization technology, and be greatly improved space.
For battery capacity measuring technology, battery capacity parameter is the key data foundation of active equalization, battery capacity
Parameter it is accurate whether will directly affect the overall effect of active equalization, or even influence Full Vehicle System work safety.But
Some active equalization technologies currently on the market, because electric voltage equalization is technically simple easy to operate at low cost, selected electric voltage equalization and
Non- actual electric quantity balancing, often the phase drawback occurs after use, is easy to differ very in the electricity that test obtains with practical electricity
Far form so-called " empty electricity ".Exactly because inevitable otherness between battery cell is had ignored, thus more balanced, battery
Monomer is easier to be impaired, expands otherness.
For active equalization of battery technology, some active equalization technologies currently on the market, accommodative facility is poor, electricity
Road Topology Structure Design is unreasonable, and the active equalization adjusting or each active equalization being only limitted between adjacent cell are only limitted to two
The energy exchange of a battery object, this makes whole required active equalization overlong time.Some active equalizations exist can only be
Vehicle launch initial stage and latter stage of charging carry out balanced feature, this does not simultaneously meet practical balanced situation needed for vehicle, Duo Shuoyong
It is then then balanced in time when accomplishing to need equilibrium that vehicle, which needs balanced situation,.Some active equalization technologies rely on inductance capacitance conduct
Transfer energy-storage travelling wave tube, but such scheme has a defect that, and electric quantity transfered step-length depends on selected inductance, selected inductance
Small, there are the too small then whole balancing speed of electricity step-length is partially slow；Selected inductance is big, and it is whole balanced that there are the excessive initiations of electricity step-length
The oscillation of system, stability difference and loss electric energy.But be presently the most prevalence is that the active based on flyback transformer is equal
Weigh circuit, but also there are still there is following problems, if some circuit designs are active balanced bidirectional circuit, it can be achieved that charge balancing
Cause reflux in electric energy transmission process but there is PWM pulsewidth regulating switch pipe is improper with the bidirectional equalization of equalization discharge,
Because of the output electric current of the common and individual disorder entirety of magnetic circuit even in balancing procedure, increases current fluctuation, not only substantially reduce
Equalization efficiency has an effect on the normal table output of battery system；And switching tube contact voltage drop is affected to equalization efficiency,
Driving circuit waits the problems such as all making integrated circuit loss excessive more.
Utility model content
The utility model provides a kind of active equalization control system based on lithium ion battery, to improve battery balanced control
The stability and equalization efficiency of system.
In order to solve the above-mentioned technical problem, it is equal to provide a kind of active based on lithium ion battery for the utility model embodiment
Weigh control system, including Battery control module and battery balanced module；
The Battery control module includes microcomputer control module, Current Voltage acquisition module, temperature collecting module, described micro-
Machine control module is connect with the Current Voltage acquisition module, the temperature collecting module respectively, for obtaining corresponding battery
Voltage, electric current, the temperature parameter of monomer, and parameter operation is carried out to all battery cells connecting with the microcomputer control module
And screening；
The Current Voltage acquisition module, the temperature collecting module are connected with corresponding battery cell respectively, the electricity
Flow the periphery detection of voltage acquisition module and the temperature collecting module as electric quantity balancing circuit in the battery balanced module
Circuit, for detecting the voltage, electric current and temperature parameter of corresponding battery cell；
The battery balanced module includes electric quantity balancing circuit, and the electric quantity balancing circuit and the microcomputer control module connect
It connects, for controlling the switch state in electric quantity balancing circuit, and the electric quantity balancing circuit is connected with corresponding battery cell, is made
For balanced topological circuit, it is used to carry out electricity active equalization to battery cell during charging and discharging.
Preferably, the electric quantity balancing circuit includes multiple electric quantity balancing units, the electric quantity balancing unit packet
Include flyback transformer, the first energy storage filter capacitor, the second energy storage filter capacitor, the first two-way switch pipe circuit, second two-way
Switching tube circuit and switching tube；
One end of the flyback transformer and the first two-way switch pipe circuit are connected in series, the inverse-excitation type transformation
The other end of device and the second two-way switch pipe circuit are connected in series；
One end of the flyback transformer is connected in parallel with the first energy storage filter capacitor, the flyback transformer
The other end be connected in parallel with the second energy storage filter capacitor；
The anode of second two-way switch pipe circuit of multiple electric quantity balancing units is connected in series, and passes through the switch
Pipe is connected to the power bus of electric quantity balancing object, the cathode of the second two-way switch pipe circuit of multiple electric quantity balancing units
It is connected to the power bus of electric quantity balancing object；
One end of the flyback transformer of each electric quantity balancing unit is connected in parallel with battery cell.
Preferably, the first two-way switch pipe circuit, the second two-way switch pipe circuit are all made of two IC
Load switch differential concatenation is formed by connecting；
The switching tube be single IC load switch, wherein the IC load switch using logic level control open and
Shutdown.
Preferably, the microcomputer control module includes any of them of single-chip microcontroller, PLC, DSP.
Compared with the prior art, the utility model embodiment has the following beneficial effects:
(1) the present embodiment according to be charged and discharged current loop feature, for design charge balancing topological circuit and
Equalization discharge topological circuit realizes transformation adjustment by switch controlled, and circuit is brief and flexibility is high, and specific aim is good, can make
Any battery cell realizes sync equalizing；
(2) the active equalization control system based on lithium ion battery has charge balancing topological circuit and equalization discharge topology
Electric circuit characteristic, can make charge balancing and equalization discharge be completely independent work, and the electric current for the total system that do not get muddled increases simultaneously
Strong system reliability and promotion balancing speed；
(3) the active equalization control system based on lithium ion battery can automatically adjust speed according to required balanced electricity,
I.e. balanced initial stage, single battery need balanced electricity more, then balancing speed is faster, can greatly reduce whole Balance route system
The system in latter stage of uniting adjusts the problem of oscillation and loss electric energy.
(4) in the active equalization control system based on lithium ion battery, by equalizing circuit topological structure with charging
State and discharge condition correspondingly make transformation, and circuit structure is flexibly exquisite, Yi Shixian；Using electric quantity balancing circuit for controlling
Switch state in electric quantity balancing circuit is not necessarily to extra drive, simplifies system structure and volume, is convenient for modularization, institute
The balancing speed for stating active equalization control system is fast, and switching loss substantially reduces, improve battery balanced control stability and
Equalization efficiency.
Detailed description of the invention
Fig. 1 is the structural representation of the active equalization control system based on lithium ion battery in the utility model embodiment
Figure；
Fig. 2 is that the circuit structure of the active equalization control system based on lithium ion battery in the utility model embodiment shows
It is intended to；
Fig. 3 is a kind of equivalent circuit diagram of Fig. 2；
Fig. 4 is another equivalent circuit diagram of Fig. 2；
Fig. 5 is the two-way switch pipe of the active equalization control system based on lithium ion battery in the utility model embodiment
Circuit structure diagram；
Fig. 6 is the load switch IC of the active equalization control system based on lithium ion battery in the utility model embodiment
Circuit structure diagram；
Wherein, the appended drawing reference in Figure of description is as follows:
1, Battery control module；11, microcomputer control module；12, Current Voltage acquisition module；13, temperature collecting module；
2, battery balanced module；21, electric quantity balancing circuit；
3, battery cell；
4, electric quantity balancing unit；41, the first two-way switch pipe circuit；42, the first energy storage filter capacitor；43, the second energy storage
Filter capacitor；44, switching tube.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts
Every other embodiment obtained, fall within the protection scope of the utility model.
Referring to Figure 1 to Fig. 4, the preferred embodiment in the utility model provides a kind of active equalization based on lithium ion battery
Control system, including Battery control module 1 and battery balanced module 2；
The Battery control module 1 includes microcomputer control module 11, Current Voltage acquisition module 12, temperature collecting module
13, the microcomputer control module 11 is connect with the Current Voltage acquisition module 12, the temperature collecting module 13 respectively, is used for
Voltage, electric current, the temperature parameter of corresponding battery cell 3 are obtained, and to all electricity connecting with the microcomputer control module 11
Pond monomer 3 carries out parameter operation and screening；
The Current Voltage acquisition module 12, the temperature collecting module 13 are connected with corresponding battery cell 3 respectively, institute
Current Voltage acquisition module 12 and the temperature collecting module 13 are stated as electric quantity balancing circuit 21 in the battery balanced module 2
Peripheral detection circuit, for detecting voltage, electric current and the temperature parameter of corresponding battery cell 3；
The battery balanced module 2 includes electric quantity balancing circuit 21, and the electric quantity balancing circuit 21 is controlled with the microcomputer
Module 11 connects, for controlling the switch state in electric quantity balancing circuit 21, and the electric quantity balancing circuit 21 and corresponding electricity
Pond monomer 3 connects, actively equal for carrying out electricity to battery cell 3 during charging and discharging as balanced topological circuit
Weighing apparatus.
In the utility model embodiment, according to the current loop feature being charged and discharged, for designing charge balancing
Topological circuit and equalization discharge topological circuit are controlled by switching tube 44 and realize transformation adjustment, and circuit is brief and flexibility is high, needle
It is good to property, any battery cell 3 can be made to realize sync equalizing；
Wherein, there is the active equalization control system based on lithium ion battery charge balancing topological circuit and equalization discharge to open up
Electric circuit characteristic is flutterred, charge balancing and equalization discharge can be made to be completely independent work, the electric current for the total system that do not get muddled, simultaneously
Enhance system reliability and promotes balancing speed；
Active equalization control system based on lithium ion battery can automatically adjust speed according to required balanced electricity, i.e.,
It weighs the initial stage, single battery needs balanced electricity more, then balancing speed is faster, can greatly reduce whole balance control system and exist
The system in latter stage adjusts the problem of oscillation and loss electric energy.
In addition, in the active equalization control system based on lithium ion battery, by equalizing circuit topological structure with filling
Electricity condition and discharge condition correspondingly make transformation, and circuit structure is flexibly exquisite, Yi Shixian；It is used for using electric quantity balancing circuit 21
The switch state in electric quantity balancing circuit 21 is controlled, extra drive is not necessarily to, simplifies system structure and volume, is convenient for module
Change, the balancing speed of the active equalization control system is fast, and switching loss substantially reduces, and improves the stabilization of battery balanced control
Property and equalization efficiency.
In the utility model embodiment, the electric quantity balancing circuit 21 includes multiple electric quantity balancing units 4, the electricity
Balanced unit 4 includes flyback transformer, the first energy storage filter capacitor 42, the second energy storage filter capacitor 43, the first two-way switch
44 circuit 41 of pipe, 44 circuit of the second two-way switch pipe and switching tube 44；
One end of the flyback transformer and 44 circuit 41 of the first two-way switch pipe are connected in series, the inverse-excitation type
The other end of transformer and 44 circuit of the second two-way switch pipe are connected in series；
One end of the flyback transformer is connected in parallel with the first energy storage filter capacitor 42, the inverse-excitation type transformation
The other end of device is connected in parallel with the second energy storage filter capacitor 43；
The anode of 44 circuit of the second two-way switch pipe of multiple electric quantity balancing units 4 is connected in series, and by described
Switching tube 44 is connected to the power bus of electric quantity balancing object, the second two-way switch pipe 44 of multiple electric quantity balancing units 4
The cathode of circuit is connected to the power bus of electric quantity balancing object；
One end of the flyback transformer of each electric quantity balancing unit 4 is connected in parallel with battery cell 3.
Fig. 5 and Fig. 6 are referred to, in the utility model embodiment, described 41, second pairs, first two-way switch pipe, 44 circuit
(as shown in Figure 5) is formed by connecting to the two IC load switch differential concatenations that are all made of of 44 circuit of switching tube；
The switching tube 44 is single IC load switch, wherein the IC load switch is opened using logic level control
With shutdown (as shown in Figure 6).
In the present embodiment, by using integrated MOSFET pipe circuit, IC load switch is as switch element, thus nothing
Additional driving circuit is needed, the volume and complexity of balance control system will be substantially reduced in this way, is convenient for modularization, and using double
To the circuit structure of reversal connection IC load switch, accomplish there is bi directional conductibility, compared to what is used with diode collocation
MOSFET pipe, 44 contact voltage drop of switching tube will substantially reduce.
In the utility model embodiment, the microcomputer control module 11 include single-chip microcontroller, PLC, DSP it is wherein any one
Kind.Single-chip microcontroller, PLC, DSP can be selected as basic main control board in the microcomputer control module 11.The Battery control module 1
By the Current Voltage acquisition module 12 and the temperature collecting module 13 obtain the voltage value of battery cell 3, current value, with
And temperature value, and balanced method is carried out to the electricity of battery cell 3, the active equalization control system based on lithium ion battery
Operating procedure is specific as follows:
A. the current capacities for detecting each battery cell 3 in target battery system carry out the moment to each battery cell 3
SOC quantity of state estimation；
B. for the battery cell 3 in target battery system, it is average that SOC is calculated by the SOC of each battery cell 3
Value, and make SOC average value as target SOC；Use preset target electricity difference poor as target electricity；
C. the difference of the current SOC and target SOC of each battery cell 3 is calculated；
D. current each battery cell 3 and target SOC is calculated by the current capacities of difference and each battery cell 3
Between the difference electricity that differs；And by the difference electricity of each battery cell 3, calculate the difference electricity of present battery system
Average value.
In the present embodiment, as a preferred option, the Battery control module 1 is balanced by battery system discharge condition
Control strategy judges using the difference electricity being calculated and difference electricity average value as input by comparing the two size
It is to be equalized whether each battery cell 3 needs, and concrete principle is as follows:
Since the anode of 44 circuit of the second dual switch of multiple electric quantity balancing units 4 is connected in series, and pass through institute
State the power bus that switching tube 44 is connected to electric quantity balancing object, the second two-way switch pipe of multiple electric quantity balancing units 4
The cathode of 44 circuits is connected to the power bus of electric quantity balancing object, uses " anode is to anode ", " cathode is to cathode "
Connection type, and be connected in parallel a side ports of all flyback transformer 44 circuits Han the second two-way switch pipe,
Form flyback transformer group parallel connection side ports；
When battery system is in discharge condition, the Battery control module 1 controls described second pair by logical signal
It is in an off state to the switching tube 44 of 44 circuit of switching tube, the electric quantity balancing circuit 21 is made to form equalization discharge topology knot
Structure, the flyback transformer group parallel connection side ports and battery system charge power supply bus are cut off at this time.
The duty ratio of the needs of battery cell 3 is calculated by the difference of difference electricity and difference electricity average value, and is used for
The Continuity signal of 44 circuit of two-way switch pipe of the electric quantity balancing circuit 21 controls, in this way when difference electricity and difference electricity are flat
When the absolute difference of mean value is greater than target electricity difference, then calculate:
Time for balance=(difference electricity-difference electricity average value-target electricity is poor)/euqalizing current,
And calculate maximum time for balance:
Duty ratio coefficient=time for balance/maximum time for balance；
Duty ratio=maximum duty cycle * duty ratio coefficient.
Wherein, when duty ratio is positive number, corresponding 3 difference electricity of battery cell is higher than difference electricity average value；It is anti-
Corresponding first two-way switch pipe, 44 circuit 41 is first connected in exciting formula transformer, then corresponding second two-way opened is connected
44 circuit 41 of the first two-way switch pipe is disconnected when closing 44 circuit of pipe, hereafter intercourses conducting and off-state.Make electric energy from right
Battery cell 3 is answered to be delivered to flyback transformer group.
And when duty ratio is negative, corresponding 3 difference electricity of battery cell is lower than difference electricity average value, and flyback is dynamic
Corresponding first two-way switch pipe, 44 circuit 41 is first connected in formula transformer, then the corresponding second two-way switch pipe is connected
44 circuit 41 of the first two-way switch pipe is disconnected when 44 circuit, hereafter intercourses conducting and off-state, makes electric energy from described anti-
Swash formula transformer group and is conveyed to corresponding battery cell 3.
Until the absolute difference of difference electricity and electricity average value is poor no more than target electricity, then stop that institute is connected in turn
44 circuit 41 of the first two-way switch pipe and 44 circuit of the second two-way switch pipe are stated, to close the equilibrium of battery cell 3.
In this way, the utility model passes through according to charge balancing topological circuit and equalization discharge topological circuit feature, design point
Balance route strategy under other match battery system state of charge and under battery system discharge condition keeps charge balancing and electric discharge equal
Weighing apparatus is completely independent work, the electric current for the total system that do not get muddled, while enhancing system reliability and promoting balancing speed.
The to sum up Balance route strategy of two sets of matching the present embodiment, so that the active equalization based on lithium ion battery controls system
System can automatically adjust speed according to required balanced electricity, i.e., the balanced initial stage, single battery needs balanced electricity more, then balanced
Speed is faster, and the method can greatly reduce system of the whole balance control system in latter stage and adjust oscillation and asking for electric energy be lost
Topic.
The utility model provides a kind of active equalization control system based on lithium ion battery, including Battery control module
1 and battery balanced module 2；
The Battery control module 1 includes microcomputer control module 11, Current Voltage acquisition module 12, temperature collecting module
13, the microcomputer control module 11 is connect with the Current Voltage acquisition module 12, the temperature collecting module 13 respectively, is used for
Voltage, electric current, the temperature parameter of corresponding battery cell 3 are obtained, and to all electricity connecting with the microcomputer control module 11
Pond monomer 3 carries out parameter operation and screening；
The Current Voltage acquisition module 12, the temperature collecting module 13 are connected with corresponding battery cell 3 respectively, institute
Current Voltage acquisition module 12 and the temperature collecting module 13 are stated as electric quantity balancing circuit 21 in the battery balanced module 2
Peripheral detection circuit, for detecting voltage, electric current and the temperature parameter of corresponding battery cell 3；
The battery balanced module 2 includes electric quantity balancing circuit 21, and the electric quantity balancing circuit 21 is controlled with the microcomputer
Module 11 connects, for controlling the switch state in electric quantity balancing circuit 21, and the electric quantity balancing circuit 21 and corresponding electricity
Pond monomer 3 connects, actively equal for carrying out electricity to battery cell 3 during charging and discharging as balanced topological circuit
Weighing apparatus.
Compared with the prior art, the utility model has the following beneficial effects:
(1) according to the current loop feature being charged and discharged, for designing charge balancing topological circuit and equalization discharge
Topological circuit is controlled by switching tube 44 and realizes transformation adjustment, and circuit is brief and flexibility is high, and specific aim is good, can make any electricity
Pond monomer 3 realizes sync equalizing；
(2) the active equalization control system based on lithium ion battery has charge balancing topological circuit and equalization discharge topology
Electric circuit characteristic, can make charge balancing and equalization discharge be completely independent work, and the electric current for the total system that do not get muddled increases simultaneously
Strong system reliability and promotion balancing speed；
(3) the active equalization control system based on lithium ion battery can automatically adjust speed according to required balanced electricity,
I.e. balanced initial stage, single battery need balanced electricity more, then balancing speed is faster, can greatly reduce whole Balance route system
The system in latter stage of uniting adjusts the problem of oscillation and loss electric energy.
(4) in the active equalization control system based on lithium ion battery, by equalizing circuit topological structure with charging
State and discharge condition correspondingly make transformation, and circuit structure is flexibly exquisite, Yi Shixian；Using electric quantity balancing circuit 21 for controlling
Switch state in electric quantity balancing circuit 21 processed is not necessarily to extra drive, simplifies system structure and volume, is convenient for module
Change, the balancing speed of the active equalization control system is fast, and switching loss substantially reduces, and improves the stabilization of battery balanced control
Property and equalization efficiency.
(5) according to charge balancing topological circuit and equalization discharge topological circuit feature, match battery system is filled respectively for design
Balance route strategy under electricity condition and under battery system discharge condition, makes charge balancing and equalization discharge be completely independent work,
Do not get muddled the electric current of total system, while enhancing system reliability and promoting balancing speed.
The Balance route strategy of (6) two sets of matching the present embodiment enables to the active equalization based on lithium ion battery to control
System can automatically adjust speed according to required balanced electricity, i.e., balanced initial stage, single battery needs balanced electricity more, then
The speed that weighs is faster, and the method can greatly reduce system of the whole balance control system in latter stage and adjust oscillation and asking for electric energy be lost
Topic.
The above is preferred embodiments of the present invention, it is noted that for the ordinary skill of the art
For personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these are improved and profit
Decorations are also considered as the protection scope of the utility model.
Claims (4)
1. a kind of active equalization control system based on lithium ion battery, which is characterized in that including Battery control module and battery
Balance module；
The Battery control module includes microcomputer control module, Current Voltage acquisition module, temperature collecting module, the microcomputer control
Molding block is connect with the Current Voltage acquisition module, the temperature collecting module respectively, for obtaining corresponding battery cell
Voltage, electric current, temperature parameter, and parameter operation and sieve are carried out to all battery cells for connecting with the microcomputer control module
Choosing；
The Current Voltage acquisition module, the temperature collecting module are connected with corresponding battery cell respectively, the electric current electricity
The peripheral detection circuit of acquisition module and the temperature collecting module as electric quantity balancing circuit in the battery balanced module is pressed,
For detecting the voltage, electric current and temperature parameter of corresponding battery cell；
The battery balanced module includes electric quantity balancing circuit, and the electric quantity balancing circuit is connect with the microcomputer control module,
For controlling the switch state in electric quantity balancing circuit, and the electric quantity balancing circuit is connected with corresponding battery cell, as
Balanced topological circuit, for carrying out electricity active equalization to battery cell during charging and discharging.
2. the active equalization control system based on lithium ion battery as described in claim 1, which is characterized in that the electricity is equal
Weighing apparatus circuit includes multiple electric quantity balancing units, the electric quantity balancing unit include flyback transformer, the first energy storage filter capacitor,
Second energy storage filter capacitor, the first two-way switch pipe circuit, the second two-way switch pipe circuit and switching tube；
One end of the flyback transformer and the first two-way switch pipe circuit are connected in series, the flyback transformer
The other end and the second two-way switch pipe circuit are connected in series；
One end of the flyback transformer is connected in parallel with the first energy storage filter capacitor, the flyback transformer it is another
One end is connected in parallel with the second energy storage filter capacitor；
The anode of second two-way switch pipe circuit of multiple electric quantity balancing units is connected in series, and is connected by the switching tube
It is connected to the power bus of electric quantity balancing object, the cathode series connection of the second two-way switch pipe circuit of multiple electric quantity balancing units
It is connected to the power bus of electric quantity balancing object；
One end of the flyback transformer of each electric quantity balancing unit is connected in parallel with battery cell.
3. the active equalization control system based on lithium ion battery as claimed in claim 2, which is characterized in that described first pair
It is formed by connecting to the two IC load switch differential concatenations that are all made of of switching tube circuit, the second two-way switch pipe circuit；
The switching tube is single IC load switch, wherein the IC load switch is switched on and off using logic level control.
4. the active equalization control system based on lithium ion battery as described in claim 1, which is characterized in that the microcomputer control
Molding block includes any of them of single-chip microcontroller, PLC, DSP.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822169174.7U CN209119861U (en) | 2018-12-21 | 2018-12-21 | A kind of active equalization control system based on lithium ion battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822169174.7U CN209119861U (en) | 2018-12-21 | 2018-12-21 | A kind of active equalization control system based on lithium ion battery |
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| CN209119861U true CN209119861U (en) | 2019-07-16 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111490571A (en) * | 2020-04-10 | 2020-08-04 | 南京耐百特智能电气有限公司 | Active equalization management system and equalization method for energy storage battery |
| CN112787362A (en) * | 2019-11-06 | 2021-05-11 | 上海度普新能源科技有限公司 | Active equalization circuit and method |
-
2018
- 2018-12-21 CN CN201822169174.7U patent/CN209119861U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112787362A (en) * | 2019-11-06 | 2021-05-11 | 上海度普新能源科技有限公司 | Active equalization circuit and method |
| CN111490571A (en) * | 2020-04-10 | 2020-08-04 | 南京耐百特智能电气有限公司 | Active equalization management system and equalization method for energy storage battery |
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