CN206272286U - Circuit of battery pack balancing - Google Patents
Circuit of battery pack balancing Download PDFInfo
- Publication number
- CN206272286U CN206272286U CN201621365320.8U CN201621365320U CN206272286U CN 206272286 U CN206272286 U CN 206272286U CN 201621365320 U CN201621365320 U CN 201621365320U CN 206272286 U CN206272286 U CN 206272286U
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- Prior art keywords
- battery pack
- lateral coil
- battery
- circuit
- multiwinding transformer
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Abstract
The utility model belongs to batteries management system technical field, specifically related to circuit of battery pack balancing, the battery pack being connected into including multiwinding transformer and by battery, the multiwinding transformer includes the first lateral coil and the second lateral coil, the first lateral coil quantity is consistent with number of batteries, and one first lateral coil connected with semiconductor switch after it is in parallel with battery pack with after Diode series with a cell parallel, the second lateral coil.By multiwinding transformer so that the energy of battery pack is delivered to the battery of low-voltage by high-tension battery, the fast uniform discharge and recharge of battery pack is realized, and reduce the energy ezpenditure in balancing procedure, simple structure, it is easy to accomplish.
Description
Technical field
The utility model belongs to batteries management system technical field, and in particular to circuit of battery pack balancing.
Background technology
The uniformity of lithium ion battery is extremely important for lithium-ion battery pack managing system, if lithium battery is uneven
Weighing apparatus, the battery of ceiling voltage causes whole battery pack other batteries not to be full of first full of protection when charging, electric discharge when
Wait minimum Electronic power batteries to be first vented, cause other batteries still to have dump energy, the last actual available electrical energy of battery pack is much smaller than single
And battery sum.Battery capacity is not in full use.
Currently advanced battery management system all can make up above-mentioned deficiency with cell balancing circuit.Current techniques master
To be the passively balanced and major class of active equalization two, the equilibrium of first kind passive type, the equilibrium of energy dissipation formula, use resistor coupled in parallel to list
And the method for battery discharge consumes the battery of unnecessary electricity, energy is largely lost, and produces heat, and heat further deteriorates electricity
Pond working environment.Euqalizing current is small, it is impossible to Fast-Balance battery.
Equations of The Second Kind is active equalization technology, wherein mainly based on transformer transducing, and transducing direction only has two kinds, first
Plant single simultaneously battery and transmit energy toward battery pack, second, battery pack is toward list and battery transmits energy.And need accurate hits
Control shift direction is removed according to strategy.If there is the situation that deviation equalization occurs entanglement in collection.
Utility model content
The purpose of this utility model is：In view of the shortcomings of the prior art, to realize the fast uniform of battery pack, and reduce
The loss of battery pack power.
To achieve these goals, the utility model is adopted the following technical scheme that：
Circuit of battery pack balancing, including multiwinding transformer and the battery pack that is connected into by battery, the Multiple coil become
Depressor includes the first lateral coil and the second lateral coil, and the first lateral coil quantity is consistent with number of batteries, and one first side line
Circle is in parallel with battery pack with after Diode series with a cell parallel, the second lateral coil after being connected with semiconductor switch.
Improved as one kind of circuit of battery pack balancing described in the utility model, the winding turn of each first lateral coil
Number is identical.
Improved as one kind of circuit of battery pack balancing described in the utility model, first lateral coil and described second
The winding turn ratio of lateral coil is 1：5.
Improved as one kind of circuit of battery pack balancing described in the utility model, the multiwinding transformer is inverse-excitation type
Transformer.
The beneficial effects of the utility model are：Circuit of battery pack balancing, including multiwinding transformer and by electricity are provided
The battery pack that pond is connected into, the multiwinding transformer includes the first lateral coil and the second lateral coil, the first side line number of turns
With a cell parallel, the second lateral coil and two after amount is consistent with number of batteries, and one first lateral coil is connected with semiconductor switch
It is in parallel with battery pack after pole pipe series connection.By multiwinding transformer so that the energy of battery pack is delivered to by high-tension battery
The battery of low-voltage, realizes the fast uniform discharge and recharge of battery pack, and reduces the energy ezpenditure in balancing procedure, simple structure,
It is easily achieved.
Brief description of the drawings
Fig. 1 is electrical block diagram of the present utility model.
Specific embodiment
The utility model and its advantage are described in further detail below in conjunction with specific embodiment, but,
Specific embodiment of the present utility model is not limited thereto.
As shown in figure 1, circuit of battery pack balancing, including multiwinding transformer and the battery pack that is connected into by battery, institute
State battery and be provided with n, respectively battery B1~Bn, the multiwinding transformer includes the first lateral coil and the second lateral coil,
The first lateral coil quantity is consistent with number of batteries, respectively the first lateral coil C1~Cn, the first lateral coil C1~Cn difference
Correspondence is in series with parallel with battery B1~Bn respectively after semiconductor switch K1~Kn, and second lateral coil is Cn+1, the second side
Coil Cn+1 is in parallel with battery pack after being connected with diode D1.
Balanced operation process is as follows, it is assumed that battery B1 is voltage battery unit higher, and battery B3 is the relatively low electricity of voltage
Pool unit.Semiconductor switch K1 and K3 is closed at, battery B1 is switched to the first lateral coil C1, and battery B3 is switched to the first side line
Circle C3.Battery B1 is magnetized by the first lateral coil C1 to transformer, and magnetic field produces on the first lateral coil C3 and is equal to battery B1
The induced voltage of voltage.Therefore the first lateral coil C3 can charge to battery B3, and this process disposably completes battery B1 to battery B3
Energy transmission.Then semiconductor switch K1 and K3 is disconnected, and magnetic field is resetted by diode D1 and the second lateral coil Cn+1.Then
Continue repeat above the step of, energy transmission from continual completion battery B1 to B3.Same reason, it is possible to achieve any
Energy transmission between battery.And direction of transfer is fixed as the high-tension low-voltage of being delivered to.If semiconductor switch K1 is arrived
Kn is all opened simultaneously, can also realize shifting simultaneously in energy whole group battery pack, and energy is from the high-tension electricity to low-voltage
Pond is shifted, and accomplishes self-balancing convergence function.
Improved as one kind of circuit of battery pack balancing described in the utility model, the winding turn of each first lateral coil
Number is identical.
Improved as one kind of circuit of battery pack balancing described in the utility model, first lateral coil and described second
The winding turn ratio of lateral coil is 1：5.
Improved as one kind of circuit of battery pack balancing described in the utility model, the multiwinding transformer is inverse-excitation type
Transformer.
The announcement and teaching of book according to the above description, the utility model those skilled in the art can also be to above-mentioned reality
The mode of applying is changed and changed.Therefore, the utility model is not limited to above-mentioned specific embodiment, every this area skill
Art personnel on the basis of the utility model it is done it is any conspicuously improved, replace or modification belongs to this practicality newly
The protection domain of type.Although additionally, having used some specific terms in this specification, these terms are intended merely to convenient saying
It is bright, any limitation is not constituted to the utility model.
Claims (4)
1. circuit of battery pack balancing, it is characterised in that：The battery pack being connected into including multiwinding transformer and by battery, it is described
Multiwinding transformer includes the first lateral coil and the second lateral coil, and the first lateral coil quantity is consistent with number of batteries, and one
First lateral coil connected with semiconductor switch after with a cell parallel, after the second lateral coil and Diode series with battery pack simultaneously
Connection.
2. circuit of battery pack balancing according to claim 1, it is characterised in that：The winding number of turn of each first lateral coil
It is identical.
3. circuit of battery pack balancing according to claim 1, it is characterised in that：First lateral coil and second side
The winding turn ratio of coil is 1：5.
4. circuit of battery pack balancing according to claim 1, it is characterised in that：The multiwinding transformer becomes for inverse-excitation type
Depressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621365320.8U CN206272286U (en) | 2016-12-13 | 2016-12-13 | Circuit of battery pack balancing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621365320.8U CN206272286U (en) | 2016-12-13 | 2016-12-13 | Circuit of battery pack balancing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206272286U true CN206272286U (en) | 2017-06-20 |
Family
ID=59045201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621365320.8U Active CN206272286U (en) | 2016-12-13 | 2016-12-13 | Circuit of battery pack balancing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206272286U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106451686A (en) * | 2016-12-13 | 2017-02-22 | 东莞力朗电池科技有限公司 | Battery pack equalization circuit |
| WO2018121655A1 (en) * | 2016-12-30 | 2018-07-05 | 华为技术有限公司 | Energy balancing circuit and energy balancing apparatus |
| CN109755688A (en) * | 2018-02-13 | 2019-05-14 | 南京博兰得电能技术发展有限公司 | A kind of battery preheating device |
| CN112054688A (en) * | 2020-08-30 | 2020-12-08 | 哈尔滨工程大学 | Modular energy storage system equalizing circuit with bidirectional current capability |
-
2016
- 2016-12-13 CN CN201621365320.8U patent/CN206272286U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106451686A (en) * | 2016-12-13 | 2017-02-22 | 东莞力朗电池科技有限公司 | Battery pack equalization circuit |
| WO2018121655A1 (en) * | 2016-12-30 | 2018-07-05 | 华为技术有限公司 | Energy balancing circuit and energy balancing apparatus |
| CN108306397A (en) * | 2016-12-30 | 2018-07-20 | 华为技术有限公司 | A kind of energy balance circuit and balancing energy device |
| US10923922B2 (en) | 2016-12-30 | 2021-02-16 | Huawei Technologies Co., Ltd. | Energy balancing circuit and energy balancing apparatus |
| CN109755688A (en) * | 2018-02-13 | 2019-05-14 | 南京博兰得电能技术发展有限公司 | A kind of battery preheating device |
| CN109755688B (en) * | 2018-02-13 | 2024-02-27 | 南京博兰得电能技术发展有限公司 | Battery preheating device |
| CN112054688A (en) * | 2020-08-30 | 2020-12-08 | 哈尔滨工程大学 | Modular energy storage system equalizing circuit with bidirectional current capability |
| CN112054688B (en) * | 2020-08-30 | 2022-01-14 | 哈尔滨工程大学 | Modular energy storage system equalizing circuit with bidirectional current capability |
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