CN207819500U - Main passive mixing decompression equalizing circuit - Google Patents
Main passive mixing decompression equalizing circuit Download PDFInfo
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- CN207819500U CN207819500U CN201820083399.8U CN201820083399U CN207819500U CN 207819500 U CN207819500 U CN 207819500U CN 201820083399 U CN201820083399 U CN 201820083399U CN 207819500 U CN207819500 U CN 207819500U
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- battery
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Abstract
The utility model discloses a kind of masters passively to mix decompression equalizing circuit；Equalizing circuit includes m concatenated battery packs and m corresponding battery balanced units.The battery balanced unit includes passive equalizing circuit and active equalization transformer in group.The utility model increases active equalization circuit between battery pack on the basis of passive balanced, and energy supplement can be rapidly carried out to the lower battery pack of energy.Under the concatenated battery balanced scene of multiple batteries, it can also reach higher equalization efficiency.It effectively improves time for balance, saved the energy content of battery.
Description
Technical field
The utility model belongs to technical field of battery management, is specifically designed into a kind of combination active equalization and passive balanced
Battery equalization method.
Background technology
In battery management system, need to be managed concatenated battery pack power.Battery equalizing circuit passes through to electricity
The equilibrium of the energy content of battery is realized in the intervention of pond energy, can improve the active volume of battery pack.It is realized and is connected by energy dissipation
The circuit of balancing energy is known as the passive equalizing circuit of battery between battery.Passive balanced usually used resistance is to the higher battery of energy
It discharges.It is known as active equalization of battery circuit by the circuit of balancing energy between energy transfer realization series-connected cell.Actively
Weighing apparatus circuit is by inductively or capacitively waiting devices to be used as intermediate energy carrier, to realize that energy moves function.
Battery is passive balanced directly to consume energy by resistance with heat-removal modalities, simple in structure but cause energy
Waste.Active equalization circuit structure is complex, cost is higher, but the recycling of the energy content of battery may be implemented.Therefore battery
Equalizing circuit need control system complexity, it is cost-effective while improve the energy content of battery recycling ratio.
Utility model content
The utility model is in view of the deficiencies of the prior art, it is proposed that a kind of master passively mixes decompression equalizing circuit.
A kind of master passively mixes decompression equalizing circuit, including series-connected cell packet and balanced unit；The series-connected cell packet by
M*n battery is connected in series, including m battery pack, and each battery pack is connected in series by n batteries；The balanced unit is a with m
Battery pack corresponds；Each balanced unit includes n equalizing resistance, n metal-oxide-semiconductor, 1 DC/DC converter and equilibrium
Control circuit；Each DC/DC converters include a transformer, a diode and a metal-oxide-semiconductor；
Each anode is connect with one end of an equalizing resistance in one balanced unit, the equalizing resistance other end and
The drain electrode of one metal-oxide-semiconductor connects, and the source electrode of the first metal-oxide-semiconductor and the cathode of battery connect；The one end and one on the secondary side of each transformer
The anode connection of a diode, the cathode of diode are connect with battery anode, the end cell packet busbar of transformer primary side
Anode connection, the other end of transformer primary side are connect with the second metal-oxide-semiconductor source electrode, drain electrode and the battery pack busbar of the second metal-oxide-semiconductor
Cathode connects；The grid of all MOS pipes connects balancing control circuit.
Further, the DC/DC converters are using isolation inverse-excitation type reduction voltage circuit.
Further, PWM modulation pulse output module is equipped in the balanced unit.
Compared with existing battery equalizing circuit, the beneficial effects of the utility model are as follows：The utility model is existing passive
Active equalization circuit is added on the basis of equilibrium.The utility model can not only complete the smaller passive equilibrium of electricity difference,
When battery capacity differs greatly, high-power active equalization can also be realized.The smaller battery pack of electricity can be rapidly
Obtain energy supplement.It is effectively improved battery balanced flexibility, improves battery balanced efficiency.
Description of the drawings
Make in order to illustrate more clearly of required in being described to embodiment below the technical solution of the utility model embodiment
Attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is only some examples of the utility model, for
For those of ordinary skill in the art, without creative efforts, other are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is the electrical block diagram of the utility model.
Specific implementation mode
Below in conjunction with the attached drawing in the example of the utility model, the technical solution in the example of the utility model is carried out clear
Chu, complete description, it is clear that described example is only the utility model a part of the embodiment, rather than whole implementation
Example.Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without making creative work
The other embodiment obtained, shall fall within the protection scope of the present invention.
Battery equalizing circuit as shown in Figure 1 is divided into series-connected cell packet, balanced unit.The present embodiment series-connected cell packet is by m*
N battery is connected in series, be divided into battery pack 1, battery pack 2 ..., battery pack m, the battery assembly module connected by n batteries
It forms.The balanced unit is corresponded with m battery pack.The balanced unit includes n equalizing resistance, 1 DC/DC transformation
Device and balancing control circuit.N equalizing resistance is corresponded with n battery of battery pack respectively.DC/DC converter primary side batteries
Packet busbar positive and negative terminal is in parallel, and secondary side is in parallel with battery pack.
Further, the present embodiment equalizing resistance R1_1 is connected with metal-oxide-semiconductor Q1_1 drain electrodes, and Q1_1 source electrodes are connected to monomer
At node between battery, grid is connected with PWM1_1 control signals, and R1_n uses similar connection type with Q1_n.It is described
Transformer T1 primary sides are connected with metal-oxide-semiconductor Qt_1 drain electrodes, and source electrode is connect with battery pack busbar negative terminal, and Qt_1 grids are controlled with PWMt_1
Signal processed is connected.The output of transformer T1 pairs side is parallel to 1 both ends of battery pack after connecting with diode D1.In the present embodiment, DC/
DC converters are using isolation inverse-excitation type reduction voltage circuit.
In the present embodiment, PWM modulation pulse output module is equipped in balanced unit.
The utility model exports PWM modulation pulsed drive Q1_1, Q1_2, Q1_3 ... Q1_n by battery management chip and leads
Logical and closing is to control the size of the passive euqalizing current of battery.
The utility model exports PWM waves using MCU controllers by its internal PWM modulation pulse output module, passes through
MOS driving chips drive the on and off of Qt_1, and it is big that the duty ratio size by controlling PWMt_1 controls active equalization electric current
It is small.
The passive equilibrium of single battery not only may be implemented in the utility model.When electricity differs greatly between battery pack
It waits, the active equalization circuit of corresponding administrative unit can be opened carries out large current charge to the battery pack compared with low battery.Entirely
Battery pack busbar energy gives the battery pack compared with low energy to charge by transformer.It wherein can be by controlling leading for metal-oxide-semiconductor Qt_1
The logical time is to control the size of active equalization electric current.
The passive mixed equilibrium of master of battery pack may be implemented in the utility model.When monomer capacity volume variance is smaller,
The corresponding MOS of the unit inner control circuit output higher battery of PWM wave driving energy that weighs is connected, and the energy content of battery is discharged by resistance,
To realize the passive equilibrium of battery pack power.Such as：When battery B1_1 energy is higher, driving circuit exports PWM wave
PWM1_1 drives metal-oxide-semiconductor Q1_1 conductings, the energy content of battery to be discharged by resistance R1_1.The utility model can not only carry out battery
It is passive balanced, and active equalization can be carried out to the lower battery pack of energy.When battery pack lower there are energy,
Battery pack, which corresponds to the output PWM driving metal-oxide-semiconductors of the control circuit in balanced unit, makes step-down transformer work.Battery pack energy passes through
Step-down transformer charges to battery pack, to realize efficient active equalization.Such as：When 1 energy of battery pack is relatively low,
1 inner control circuit of the unit output PWMt_1 driving transformers that weigh work.The energy of battery pack be depressured by step-down transformer after to
1 boost charge of battery pack.
It is complicated that the utility model breaches active equalization circuit, it is difficult to be applied to the concatenated scene of a large amount of single batteries
Limitation.The equalization efficiency for improving more battery series batteries can rapidly reach balanced purpose.
The above is only the preferred embodiment of the present invention, all new in this practicality not to limit the utility model
Any modification, the equivalent replacement etc. made within the spirit and principle of type, should be included in the scope of protection of the utility model it
It is interior.
Claims (3)
1. a kind of master passively mixes decompression equalizing circuit, it is characterised in that：Including series-connected cell packet and balanced unit；The series connection
Battery pack is connected in series by m*n battery, including m battery pack, and each battery pack is connected in series by n batteries；The equilibrium
Unit is corresponded with m battery pack；Each balanced unit includes n equalizing resistance, n metal-oxide-semiconductor, 1 DC/DC transformation
Device and balancing control circuit；Each DC/DC converters include a transformer, a diode and a metal-oxide-semiconductor；
Each anode is connect with one end of an equalizing resistance in one balanced unit, the equalizing resistance other end and first
The drain electrode of metal-oxide-semiconductor connects, and the source electrode of the first metal-oxide-semiconductor and the cathode of battery connect；The one end on the secondary side of each transformer with one
The anode connection of diode, the cathode of diode are connect with battery anode, and the end cell packet busbar of transformer primary side is just
Pole connects, and the other end of transformer primary side is connect with the second metal-oxide-semiconductor source electrode, the drain electrode of the second metal-oxide-semiconductor and bearing for battery pack busbar
Pole connects；The grid of all metal-oxide-semiconductors connects balancing control circuit.
2. a kind of master as described in claim 1 passively mixes decompression equalizing circuit, which is characterized in that the DC/DC converters
Using isolation boosting inverse-excitation type reduction voltage circuit.
3. a kind of master as described in claim 1 passively mixes decompression equalizing circuit, it is characterised in that：In the balanced unit
Equipped with PWM modulation pulse output module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820083399.8U CN207819500U (en) | 2018-01-18 | 2018-01-18 | Main passive mixing decompression equalizing circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820083399.8U CN207819500U (en) | 2018-01-18 | 2018-01-18 | Main passive mixing decompression equalizing circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207819500U true CN207819500U (en) | 2018-09-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820083399.8U Active CN207819500U (en) | 2018-01-18 | 2018-01-18 | Main passive mixing decompression equalizing circuit |
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| Country | Link |
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| CN (1) | CN207819500U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108134429A (en) * | 2018-01-18 | 2018-06-08 | 杭州电子科技大学 | A kind of master passively mixes decompression equalizing circuit |
| CN111342689A (en) * | 2020-03-04 | 2020-06-26 | 广东工业大学 | Multilevel converter of energy storage system and SOC self-equalization modulation method |
-
2018
- 2018-01-18 CN CN201820083399.8U patent/CN207819500U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108134429A (en) * | 2018-01-18 | 2018-06-08 | 杭州电子科技大学 | A kind of master passively mixes decompression equalizing circuit |
| CN111342689A (en) * | 2020-03-04 | 2020-06-26 | 广东工业大学 | Multilevel converter of energy storage system and SOC self-equalization modulation method |
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