CN108134429A - A kind of master passively mixes decompression equalizing circuit - Google Patents
A kind of master passively mixes decompression equalizing circuit Download PDFInfo
- Publication number
- CN108134429A CN108134429A CN201810048216.3A CN201810048216A CN108134429A CN 108134429 A CN108134429 A CN 108134429A CN 201810048216 A CN201810048216 A CN 201810048216A CN 108134429 A CN108134429 A CN 108134429A
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- Prior art keywords
- battery
- battery pack
- oxide
- metal
- semiconductor
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
- H02J7/0016—Circuits for equalisation of charge between batteries using shunting, discharge or bypass circuits
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a kind of masters passively to mix decompression equalizing circuit；Equalizing circuit includes the battery pack and m corresponding battery balanced units of m series connection.The battery balanced unit includes passive equalizing circuit and active equalization transformer in group.The present invention increases active equalization circuit between battery pack on the basis of passive equilibrium, and the battery pack relatively low to energy can rapidly carry out energy supplement.Under the battery balanced scene connected in face 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 invention belongs to technical field of battery management, are specifically designed into a kind of combination active equalization and passive balanced battery
Equalization methods.
Technical background
In battery management system, need to be managed the battery pack power of series connection.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 connected by energy dissipation
The circuit of balancing energy is known as the passive equalizing circuit of battery between battery.It is passive balanced usually using the resistance battery higher to energy
It discharges.Active equalization of battery circuit is known as by the circuit of balancing energy between energy transfer realization series-connected cell.Actively
Weighing apparatus circuit moves function by inductively or capacitively devices being waited to be used as intermediate energy carrier so as to fulfill energy.
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 can realize the recycling of the energy content of battery.Therefore battery
Equalizing circuit need control system complexity, it is cost-effective while improve the energy content of battery recycling ratio.
Invention content
In view of the deficiencies of the prior art, the present invention proposes a kind of masters passively to mix 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, and including m battery pack, 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 connection of one metal-oxide-semiconductor, the source electrode of the first metal-oxide-semiconductor and the cathode of battery connect；One end and one of the secondary 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 connects, and the other end of transformer primary side is 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 metal-oxide-semiconductors 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, beneficial effects of the present invention are as follows：The present invention is in the base of existing passive equilibrium
Active equalization circuit is added on plinth.The present invention can not only complete the smaller passive equilibrium of electricity difference, when battery capacity is poor
When different larger, high-power active equalization can also be realized.The smaller battery pack of electricity can be quickly obtained energy supplement.
It is effectively improved battery balanced flexibility, improves battery balanced efficiency.
Description of the drawings
To describe the technical solutions in the embodiments of the present invention more clearly below to needed in embodiment description
Attached drawing is briefly described, it should be apparent that, the accompanying drawings in the following description is only some examples of the present invention, general for this field
For logical technical staff, without creative efforts, other attached drawings are can also be obtained according to these attached drawings.
Fig. 1 is the electrical block diagram of the present invention.
Specific embodiment
Below in conjunction with the attached drawing in present example, the technical solution in present example is carried out clear, complete
Description, it is clear that described example is only part of the embodiment of the present invention, instead of all the embodiments.Based on the present invention
In embodiment, the other embodiment that those of ordinary skill in the art are obtained without making creative work, all
Belong to the scope of protection of the 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 corresponds respectively with n battery of battery pack.DC/DC converter primary side batteries
Packet busbar positive and negative terminal is in parallel, and secondary 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 mode with Q1_n.The change
Depressor 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 is connected.The output of transformer T1 secondary is parallel to 1 both ends of battery pack after connecting with diode D1.In the present embodiment, DC/DC
Converter is using isolation inverse-excitation type reduction voltage circuit.
In the present embodiment, PWM modulation pulse output module is equipped in balanced unit.
The present invention exports PWM modulation pulsed drive Q1_1, Q1_2, Q1_3 ... Q1_n conductings by battery management chip and closes
Close the size so as to control the passive euqalizing current of battery.
The present invention exports PWM wave using MCU controllers by its internal PWM modulation pulse output module, is driven by MOS
The on and off of dynamic chip drives Qt_1 controls active equalization size of current by the duty ratio size for controlling PWMt_1.
The present invention can not only realize the passive equilibrium of single battery.When electricity differs greatly between battery pack,
The active equalization circuit of corresponding administrative unit can be opened carries out large current charge to the battery pack compared with low battery.Entire battery
Packet busbar energy gives the battery pack compared with low energy to charge by transformer.Wherein can be by controlling metal-oxide-semiconductor Qt_1 conducting when
Between so as to control the size of active equalization electric current.
The present invention can realize the passive mixed equilibrium of the master of battery pack.It is balanced single when monomer capacity volume variance is smaller
First inner control circuit exports the corresponding MOS conductings of the higher battery of PWM wave driving energy, and the energy content of battery is discharged by resistance, so as to
Realize the passive equilibrium of battery pack power.Such as：When battery B1_1 energy is higher, driving circuit output PWM wave PWM1_1
Metal-oxide-semiconductor Q1_1 conductings are driven, the energy content of battery is discharged by resistance R1_1.The present invention can not only carry out battery passive equilibrium,
And can be relatively low to energy battery pack carry out active equalization.When there are when energy relatively low battery pack, battery pack pair
The control circuit in balanced unit is answered, which to export PWM driving metal-oxide-semiconductors, makes step-down transformer work.Battery pack energy passes through downconverter
Device charges to battery pack, so as to fulfill efficient active equalization.Such as：When 1 energy of battery pack is relatively low, balanced unit 1
Inner control circuit output PWMt_1 driving transformer work.The energy of battery pack be depressured by step-down transformer after to battery pack 1
Boost charge.
It is complicated that the present invention breaches active equalization circuit, it is difficult to the limit of the scene applied to the series connection of a large amount of single batteries
System.The equalization efficiency of more battery series batteries is improved, balanced purpose can be rapidly reached.
The foregoing is merely presently preferred embodiments of the present invention, all in spirit and original of the invention not to limit the present invention
Any modification for being made within then, equivalent replacement etc., should all be included in the protection scope of the present invention.
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, and including m battery pack, 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 connection of metal-oxide-semiconductor, the source electrode of the first metal-oxide-semiconductor and the cathode of battery connect；One end of the secondary 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 |
|---|---|---|---|
| CN201810048216.3A CN108134429A (en) | 2018-01-18 | 2018-01-18 | A kind of master passively mixes decompression equalizing circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810048216.3A CN108134429A (en) | 2018-01-18 | 2018-01-18 | A kind of master passively mixes decompression equalizing circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108134429A true CN108134429A (en) | 2018-06-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810048216.3A Pending CN108134429A (en) | 2018-01-18 | 2018-01-18 | A kind of master passively mixes decompression equalizing circuit |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109888417A (en) * | 2019-04-09 | 2019-06-14 | 哈尔滨工业大学 | A kind of direct balanced device composite structure of series connection accumulation power supply |
| CN110126675A (en) * | 2019-05-10 | 2019-08-16 | 杭州电子科技大学 | A kind of passive mating type mixed equilibrium circuit of master applied to power battery |
| CN110190656A (en) * | 2019-07-05 | 2019-08-30 | 哈尔滨工业大学 | Series-connected cell group charge/discharge balancing system |
| CN110203106A (en) * | 2019-05-10 | 2019-09-06 | 杭州电子科技大学 | A kind of active mixed equilibrium circuit applied to power battery |
| CN110783987A (en) * | 2019-11-08 | 2020-02-11 | 南京航空航天大学 | Layered optimal control method for battery equalization of battery pack |
| CN114696393A (en) * | 2020-12-31 | 2022-07-01 | 宝能汽车集团有限公司 | Power battery and active and passive composite equalization circuit thereof |
| US20220416549A1 (en) * | 2019-03-21 | 2022-12-29 | Hefei Gotion High-Tech Power Energy Co., Ltd. | Active equalization circuit, battery management system, power source system, and electronic device |
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| CN105789715A (en) * | 2016-02-25 | 2016-07-20 | 上海大学 | Battery sampling and equalization circuits sharing switch array |
| CN207819500U (en) * | 2018-01-18 | 2018-09-04 | 杭州电子科技大学 | Main passive mixing decompression equalizing circuit |
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| CN103248090A (en) * | 2013-04-18 | 2013-08-14 | 湖南大学 | Novel integrated design for equalizing system of BEV (blade electric vehicle) |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220416549A1 (en) * | 2019-03-21 | 2022-12-29 | Hefei Gotion High-Tech Power Energy Co., Ltd. | Active equalization circuit, battery management system, power source system, and electronic device |
| CN109888417A (en) * | 2019-04-09 | 2019-06-14 | 哈尔滨工业大学 | A kind of direct balanced device composite structure of series connection accumulation power supply |
| CN110126675A (en) * | 2019-05-10 | 2019-08-16 | 杭州电子科技大学 | A kind of passive mating type mixed equilibrium circuit of master applied to power battery |
| CN110203106A (en) * | 2019-05-10 | 2019-09-06 | 杭州电子科技大学 | A kind of active mixed equilibrium circuit applied to power battery |
| CN110190656A (en) * | 2019-07-05 | 2019-08-30 | 哈尔滨工业大学 | Series-connected cell group charge/discharge balancing system |
| CN110783987A (en) * | 2019-11-08 | 2020-02-11 | 南京航空航天大学 | Layered optimal control method for battery equalization of battery pack |
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| CN114696393A (en) * | 2020-12-31 | 2022-07-01 | 宝能汽车集团有限公司 | Power battery and active and passive composite equalization circuit thereof |
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Application publication date: 20180608 |