CN105226736A - Electrokinetic cell bidirectional equalization system - Google Patents
Electrokinetic cell bidirectional equalization system Download PDFInfo
- Publication number
- CN105226736A CN105226736A CN201410276506.5A CN201410276506A CN105226736A CN 105226736 A CN105226736 A CN 105226736A CN 201410276506 A CN201410276506 A CN 201410276506A CN 105226736 A CN105226736 A CN 105226736A
- Authority
- CN
- China
- Prior art keywords
- cell
- circuit
- bimodulus
- battery
- resistance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 21
- 230000005611 electricity Effects 0.000 claims description 22
- 238000012806 monitoring device Methods 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Abstract
The invention provides a kind of electrokinetic cell bidirectional equalization system, comprise by N number of cell battery pack in series, also comprise A-battery, control circuit, equalizer transformer, the bimodulus circuit group, control switch and the microcontroller that are made up of N number of bimodulus circuit; Described equalizer transformer comprises a primary coil and N number of secondary coil, and primary coil is connected with A-battery by control switch, and control switch is controlled by microcontroller; Described bimodulus circuit comprises the secondary coil that one in the first resistance, the second resistance, a MOSFET, the 2nd MOSFET, inductance, battery pack saves cell and equalizer transformer; Described first resistance and the second resistance are in parallel after connecting with a described 2nd MOSFET and MOSFET respectively, then are connected in series with the secondary coil in bimodulus circuit, inductance and cell.Present invention achieves the electric quantity balancing of battery pack, improve battery pack overall performance and cell life-span.
Description
Technical field
The present invention relates to automobile batteries balancing technique field, particularly a kind of electrokinetic cell bidirectional equalization system being applicable to electric automobile.
Background technology
Along with the deficient problem increasingly significant of traditional energy, the application of new forms of energy is also more and more subject to people's attention and welcomes, New-energy electric vehicle is the main development direction of new-energy automobile, in the application of automobile power cell, cell series connection uses to meet high-power, jumbo needs by groups.In series circuit, identical by the electric current of each cell and time, namely the electric discharge of each cell is identical, due to the difference of cell individuality and in product use procedure the change of battery parameter result in cell and there is inconsistency, and the inconsistency of cell performance directly can affect the performance of whole battery pack, and cause the problem of the cell lost of life.
Summary of the invention
In view of the above, the present invention is necessary to provide a kind of electrokinetic cell bidirectional equalization system that effectively can improve battery pack overall performance and cell life-span.
A kind of electrokinetic cell bidirectional equalization system, comprises by N number of cell battery pack in series, also comprises A-battery, control circuit, equalizer transformer, the bimodulus circuit group, control switch and the microcontroller that are made up of N number of bimodulus circuit;
Described equalizer transformer comprises a primary coil and N number of secondary coil, described primary coil is connected with described A-battery by control switch, described secondary coil saves cell with in described battery pack respectively by control switch and is in series, and described control switch is controlled by described microcontroller;
Described bimodulus circuit comprises a secondary coil of a joint cell in the first resistance, the second resistance, a MOSFET, the 2nd MOSFET, inductance, described battery pack and described equalizer transformer; Described first resistance and described second resistance are connected with described 2nd MOSFET and a described MOSFET respectively, are connected in series after the first resistance after described series connection and the 2nd MOSFET and described second resistance and a MOSFET are in parallel with secondary coil, inductance and the cell in described bimodulus circuit.
Further, described A-battery, collects for the electricity of releasing electricity cell high in described battery pack, and charges to the cell of electricity low in described battery pack.
Further, described microcontroller, for controlling the connection of the secondary coil of described cell and described equalizer transformer, and the connection of primary coil of described equalizer transformer and described A-battery.
Further, in described microcontroller, be provided with electric quantity monitoring device, in electric quantity monitoring device, be provided with power threshold;
When the electricity of described cell is greater than the maximum charge value of setting, the connection of the control switch of cell described in described microprocessor controls, electricity is stored into by described bimodulus circuit, equalizer transformer and control circuit the electric discharge completing described cell in described A-battery successively;
When the electricity of described cell is less than the minimum amount of power value of setting, the connection of the control switch of cell described in described microprocessor controls, the electricity stored in described A-battery is transported to by described control circuit, equalizer transformer and bimodulus circuit the charging completing described cell in described cell successively.
Further, described control switch is electronic switch or mechanical switch.
Compared to prior art, electrokinetic cell bidirectional equalization system of the present invention, by arranging bimodulus circuit in systems in which, equalizer transformer, control circuit and A-battery, make the electricity of cell successively by bimodulus circuit, equalizer transformer and control circuit are stored in A-battery the electric discharge that completes cell and make the electricity stored in A-battery pass through control circuit successively, equalizer transformer and bimodulus circuit are transported in cell the charging completing cell, achieve the electric quantity balancing of battery pack, improve the performance of battery pack entirety and the life-span of cell.
Accompanying drawing explanation
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to be illustrated more clearly in technical scheme of the present invention, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, accompanying drawing in description is only correspond to specific embodiments more of the present invention, to those skilled in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings when needing.
Fig. 1 is the circuit structure diagram of electrokinetic cell bidirectional equalization system provided by the invention;
Fig. 2 is the circuit connection diagram of microcontroller provided by the invention;
Fig. 3 is the circuit working schematic diagram of electrokinetic cell bidirectional equalization system provided by the invention when cell discharges;
Fig. 4 is the circuit working schematic diagram of electrokinetic cell bidirectional equalization system provided by the invention when cell charges.
Embodiment
In order to elaborate the technical scheme that the present invention takes for reaching predetermined technique object, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only section Example of the present invention, instead of whole embodiments, and, under the prerequisite not paying creative work, technological means in embodiments of the invention or technical characteristic can be replaced, below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
Be illustrated in figure 1 the circuit structure diagram of the electrokinetic cell bidirectional equalization system that the embodiment of the present invention provides, be illustrated in figure 2 the circuit connection diagram of the microcontroller that the embodiment of the present invention provides, A in A and Fig. 2 in Fig. 1 is tie point, microcontroller in Fig. 2 is connected to the tie point A in Fig. 1 circuit by tie point A correspondence, form whole electrokinetic cell bidirectional equalization system.
Electrokinetic cell bidirectional equalization system as shown in Figure 1, comprise by cell B1-B6 battery pack in series, also comprise A-battery 4, control circuit 5, equalizer transformer 1, the bimodulus circuit group 3 be made up of the bimodulus circuit of the same structure corresponding respectively to cell B1-B6 and microcontroller;
Equalizer transformer 1 comprises primary coil T13 and corresponds respectively to the secondary coil T1-T6 of cell B1-B6, primary coil T13 is connected with A-battery by control switch K7, K8, secondary coil T1-T6 is in series with the cell B1-B6 in battery pack respectively by control switch K1-K6, and described control switch K1-K8 is controlled by microcontroller;
Bimodulus circuit group 3 comprises first resistance R1, R3, R5 ... R11, second resistance R2, R4, R6 ... R12, one MOSFETQ1, Q3, Q5 ... Q11,2nd MOSFETQ2, Q4, Q6 ... Q12, inductance L 1, L2, L3 ... L6, cell B1, B2, B3 ... secondary coil T1, T2, T3 of B6 and equalizer transformer ... T6;
Bimodulus circuit 2 comprises the secondary coil T1 of cell B1 in the first resistance R1, the second resistance R2, a MOSFETQ1, the 2nd MOSFETQ2, inductance L 1, battery pack and equalizer transformer 1; First resistance R1 and the second resistance R2 connects with the 2nd MOSFETQ2 and a MOSFETQ1 respectively, is connected in series after the first resistance R1 after series connection and the 2nd MOSFETQ2 and a second resistance R2 and MOSFETQ1 is in parallel with the secondary coil T1 in bimodulus circuit, inductance L 1 and cell B1.
Microcontroller as shown in Figure 2, its inside is provided with electric quantity monitoring device, power threshold is provided with in electric quantity monitoring device, when the electricity of cell is greater than the maximum charge value of setting, the control switch that microcontroller controls cell is connected, and electricity is stored into by bimodulus circuit, equalizer transformer 1 and control circuit 5 electric discharge completing cell in A-battery 4 successively; When the electricity of cell is less than the minimum amount of power value of setting, the control switch that microcontroller controls cell is connected, and the electricity stored in A-battery 4 is transported in cell by control circuit 5, equalizer transformer 1 and bimodulus circuit the charging completing cell successively.
Be illustrated in figure 3 the circuit working schematic diagram of electrokinetic cell bidirectional equalization system when cell B1 discharges that the embodiment of the present invention provides, when cell B1 discharges, microcontroller is connected by the enable control control switch K1 of output signal, now, one MOSFETQ1, 2nd MOSFETQ2, first resistance R1, second resistance R2, inductance L 1, secondary coil T1 can form self-oscillation pattern and carry out work, the energy of cell B1 is transferred on the secondary coil T1 of equalizer transformer 1 by bimodulus circuit 2, microcontroller outputs signal enable control control switch K7, K8 disconnects, now, secondary coil T1 by equalizer transformer 1 is delivered on primary coil T13 of equalizer transformer 1 by the energy of cell B1, energy on primary coil T13 of equalizer transformer 1 is again by diode D7, D8 outputs to after carrying out rectification in control circuit 5, microcontroller controls control circuit 5 by tie point A and carries out energy management, finally, in A-battery 4, the electric discharge to cell B1 is completed through the stored energy of control circuit 5.
Be illustrated in figure 4 the circuit working schematic diagram of electrokinetic cell bidirectional equalization system when cell B3 charges that the embodiment of the present invention provides, when cell B3 charges, A-battery 4 by Energy transfer on control circuit 5, microcontroller controls control circuit 5 by tie point A and carries out energy management, simultaneously, microcontroller outputs signal enable control control switch K7, K8 interlocks work, now, primary coil T13 by equalizer transformer 1 is delivered on the secondary coil T3 of equalizer transformer 1 by the energy on control circuit 5, microcontroller is connected by the enable control control switch K3 of output signal, now, one MOSFETQ5, 2nd MOSFETQ6, first resistance R5, second resistance R6, inductance L 3 can form synchronous rectification pattern and carry out work, energy on equalizer transformer 1 secondary coil T3 transfers in cell B3 the charging completed cell B3 by bimodulus circuit 2.
In embodiments of the invention, aforementioned control switch can be electronic switch or mechanical switch.
To sum up, electrokinetic cell bidirectional equalization system of the present invention, by arranging bimodulus circuit, equalizer transformer, control circuit and A-battery in systems in which, the electricity of cell is made to be stored in A-battery by bimodulus circuit, equalizer transformer and control circuit the electric discharge that completes cell successively and to make the electricity stored in A-battery be transported in cell by control circuit, equalizer transformer and bimodulus circuit the charging completing cell successively, achieve the electric quantity balancing of battery pack, improve the performance of battery pack entirety and the life-span of cell.
The above, it is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, although the present invention discloses as above with preferred embodiment, but and be not used to limit the present invention, any those skilled in the art, do not departing within the scope of technical solution of the present invention, make a little change when the technology contents of above-mentioned announcement can be utilized or be modified to the Equivalent embodiments of equivalent variations, in every case be do not depart from technical solution of the present invention content, according to technical spirit of the present invention, within the spirit and principles in the present invention, to any simple amendment that above embodiment is done, equivalent replacement and improvement etc., within the protection range all still belonging to technical solution of the present invention.
Claims (5)
1. an electrokinetic cell bidirectional equalization system, comprise by N number of cell battery pack in series, it is characterized in that: also comprise A-battery, control circuit, equalizer transformer, the bimodulus circuit group, control switch and the microcontroller that are made up of N number of bimodulus circuit;
Described equalizer transformer comprises a primary coil and N number of secondary coil, described primary coil is connected with described A-battery by control switch, described secondary coil saves cell with in described battery pack respectively by control switch and is in series, and described control switch is controlled by described microcontroller;
Described bimodulus circuit comprises a secondary coil of a joint cell in the first resistance, the second resistance, a MOSFET, the 2nd MOSFET, inductance, described battery pack and described equalizer transformer; Described first resistance and described second resistance are connected with described 2nd MOSFET and a described MOSFET respectively, are connected in series after the first resistance after described series connection and the 2nd MOSFET and described second resistance and a MOSFET are in parallel with secondary coil, inductance and the cell in described bimodulus circuit.
2. electrokinetic cell bidirectional equalization system according to claim 1, it is characterized in that: described A-battery, electricity for releasing electricity cell high in described battery pack is collected, and charges to the cell of electricity low in described battery pack.
3. electrokinetic cell bidirectional equalization system according to claim 1, it is characterized in that: described microcontroller, for controlling the connection of the secondary coil of described cell and described equalizer transformer, and the connection of primary coil of described equalizer transformer and described A-battery.
4. the electrokinetic cell bidirectional equalization system according to claim 1 or 3, is characterized in that: be provided with electric quantity monitoring device in described microcontroller, is provided with power threshold in electric quantity monitoring device;
When the electricity of described cell is greater than the maximum charge value of setting, the connection of the control switch of cell described in described microprocessor controls, electricity is stored into by described bimodulus circuit, equalizer transformer and control circuit the electric discharge completing described cell in described A-battery successively;
When the electricity of described cell is less than the minimum amount of power value of setting, the connection of the control switch of cell described in described microprocessor controls, the electricity stored in described A-battery is transported to by described control circuit, equalizer transformer and bimodulus circuit the charging completing described cell in described cell successively.
5. electrokinetic cell bidirectional equalization system according to claim 1, is characterized in that: described control switch is electronic switch or mechanical switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410276506.5A CN105226736A (en) | 2014-06-20 | 2014-06-20 | Electrokinetic cell bidirectional equalization system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410276506.5A CN105226736A (en) | 2014-06-20 | 2014-06-20 | Electrokinetic cell bidirectional equalization system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105226736A true CN105226736A (en) | 2016-01-06 |
Family
ID=54995525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410276506.5A Pending CN105226736A (en) | 2014-06-20 | 2014-06-20 | Electrokinetic cell bidirectional equalization system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105226736A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107154656A (en) * | 2017-05-05 | 2017-09-12 | 安徽锐能科技有限公司 | Electric quantity balancing device and method between battery pack |
| CN107785943A (en) * | 2016-08-26 | 2018-03-09 | 华为技术有限公司 | A kind of apparatus and system of balancing battery group energy |
| CN108964155A (en) * | 2017-05-17 | 2018-12-07 | 宝沃汽车（中国）有限公司 | Power battery equalization methods, device and vehicle |
| CN108944479A (en) * | 2017-05-17 | 2018-12-07 | 宝沃汽车（中国）有限公司 | Power battery equalization methods, device and vehicle |
| CN110277811A (en) * | 2018-03-13 | 2019-09-24 | 矢崎总业株式会社 | Power-supply system including high-pressure system and low-pressure system |
| CN111264014A (en) * | 2017-10-27 | 2020-06-09 | 株式会社电装 | Electricity storage system |
| CN112636415A (en) * | 2020-12-09 | 2021-04-09 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Multi-battery-pack parallel charging control method for single charging device |
| CN112636417A (en) * | 2020-12-09 | 2021-04-09 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Storage battery set parallel charging current-sharing circuit structure |
| WO2021143263A1 (en) * | 2020-01-16 | 2021-07-22 | 珠海格力电器股份有限公司 | Energy balance control device, battery system, and energy balance control method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020109482A1 (en) * | 2000-11-21 | 2002-08-15 | Seiichi Anzawa | Voltage equalizing apparatus for battery devices |
| JP2009071936A (en) * | 2007-09-11 | 2009-04-02 | Fuji Heavy Ind Ltd | Voltage equalization system for battery pack |
| CN102668311A (en) * | 2009-12-14 | 2012-09-12 | 李持国际有限公司 | Systems and methods for balancing multi-cell batteries |
| CN103580252A (en) * | 2013-11-12 | 2014-02-12 | 安徽安凯汽车股份有限公司 | Charging system of low-voltage batteries of electric automobile and charging method thereof |
| CN203942313U (en) * | 2014-06-20 | 2014-11-12 | 深圳中德世纪新能源有限公司 | Electrokinetic cell bidirectional equalization system |
-
2014
- 2014-06-20 CN CN201410276506.5A patent/CN105226736A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020109482A1 (en) * | 2000-11-21 | 2002-08-15 | Seiichi Anzawa | Voltage equalizing apparatus for battery devices |
| JP2009071936A (en) * | 2007-09-11 | 2009-04-02 | Fuji Heavy Ind Ltd | Voltage equalization system for battery pack |
| CN102668311A (en) * | 2009-12-14 | 2012-09-12 | 李持国际有限公司 | Systems and methods for balancing multi-cell batteries |
| CN103580252A (en) * | 2013-11-12 | 2014-02-12 | 安徽安凯汽车股份有限公司 | Charging system of low-voltage batteries of electric automobile and charging method thereof |
| CN203942313U (en) * | 2014-06-20 | 2014-11-12 | 深圳中德世纪新能源有限公司 | Electrokinetic cell bidirectional equalization system |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107785943A (en) * | 2016-08-26 | 2018-03-09 | 华为技术有限公司 | A kind of apparatus and system of balancing battery group energy |
| CN107785943B (en) * | 2016-08-26 | 2020-02-21 | 华为技术有限公司 | Device and system for balancing energy of battery pack |
| US11211815B2 (en) | 2016-08-26 | 2021-12-28 | Huawei Technologies Co., Ltd. | Apparatus and system for balancing energy in battery pack |
| CN107154656B (en) * | 2017-05-05 | 2023-10-27 | 安徽锐能科技有限公司 | Device and method for balancing electric quantity among battery packs |
| CN107154656A (en) * | 2017-05-05 | 2017-09-12 | 安徽锐能科技有限公司 | Electric quantity balancing device and method between battery pack |
| CN108964155A (en) * | 2017-05-17 | 2018-12-07 | 宝沃汽车（中国）有限公司 | Power battery equalization methods, device and vehicle |
| CN108944479A (en) * | 2017-05-17 | 2018-12-07 | 宝沃汽车（中国）有限公司 | Power battery equalization methods, device and vehicle |
| CN108964155B (en) * | 2017-05-17 | 2020-12-15 | 宝沃汽车（中国）有限公司 | Power battery balancing method and device and vehicle |
| CN111264014A (en) * | 2017-10-27 | 2020-06-09 | 株式会社电装 | Electricity storage system |
| CN111264014B (en) * | 2017-10-27 | 2024-01-16 | 株式会社电装 | Power storage system |
| CN110277811A (en) * | 2018-03-13 | 2019-09-24 | 矢崎总业株式会社 | Power-supply system including high-pressure system and low-pressure system |
| WO2021143263A1 (en) * | 2020-01-16 | 2021-07-22 | 珠海格力电器股份有限公司 | Energy balance control device, battery system, and energy balance control method |
| CN112636415A (en) * | 2020-12-09 | 2021-04-09 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Multi-battery-pack parallel charging control method for single charging device |
| CN112636417B (en) * | 2020-12-09 | 2022-07-29 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Storage battery parallel charging and current equalizing circuit structure |
| CN112636415B (en) * | 2020-12-09 | 2022-07-29 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Multi-battery-pack parallel charging control method for single charging device |
| CN112636417A (en) * | 2020-12-09 | 2021-04-09 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Storage battery set parallel charging current-sharing circuit structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105226736A (en) | Electrokinetic cell bidirectional equalization system | |
| CN204761124U (en) | Electric automobile direct current that possesses intelligent power distribution function electric loop that charges | |
| CN203086213U (en) | Rapid charger and mobile power supply with the charger | |
| CN203942313U (en) | Electrokinetic cell bidirectional equalization system | |
| CN104410126B (en) | Electric automobile and vehicle-mounted charger and vehicle-mounted DC/DC integrated systems | |
| CN104410114B (en) | Mobile power supply | |
| CN104201654A (en) | Battery pack balance protecting system and method | |
| CN204103532U (en) | A kind of two-way charger | |
| WO2020101784A8 (en) | Wireless power transfer system and method | |
| CN202712961U (en) | Server cabinet and data center with same | |
| CN103779950A (en) | Charging device and method thereof | |
| CN204103559U (en) | A kind of power circuit | |
| CN105958629A (en) | BMS power supply device and power supply method for electric automobile | |
| CN204028262U (en) | The pick-up unit of non-Vehicular charger | |
| CN203911511U (en) | Parallel charging circuit for multiple lithium batteries | |
| CN204304500U (en) | A kind of two-way exports charger | |
| CN203942299U (en) | A kind of series-connected cell plate charging device | |
| CN204290409U (en) | A kind of circuit of battery pack balancing | |
| CN104967175A (en) | Electric vehicle high-power charger and electric vehicle charging realization method | |
| CN203192900U (en) | Lithium battery protection board | |
| CN206977135U (en) | Charger | |
| CN205081507U (en) | Lead acid battery protection device among emergency system | |
| CN204761055U (en) | Battery measurement case is held in general type aviation | |
| CN102769330A (en) | Supercharging device with battery and super capacitors in series connection | |
| CN204068217U (en) | A kind of battery pack balancing protection system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160106 |