CN201877865U - Automobile power battery balance system - Google Patents
Automobile power battery balance system Download PDFInfo
- Publication number
- CN201877865U CN201877865U CN2010206745674U CN201020674567U CN201877865U CN 201877865 U CN201877865 U CN 201877865U CN 2010206745674 U CN2010206745674 U CN 2010206745674U CN 201020674567 U CN201020674567 U CN 201020674567U CN 201877865 U CN201877865 U CN 201877865U
- Authority
- CN
- China
- Prior art keywords
- unit
- module
- voltage data
- charging
- automobile power
- 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.)
- Expired - Fee Related
Links
Images
Abstract
The utility model relates to an automobile power battery balance system, which comprises a balance control module, a monomer battery voltage collection module and a plurality of direct current to direct current (DC-DC) charging modules, wherein the balance control module is respectively and electrically connected with each DC-DC charging module through the monomer battery voltage collection module, preferably, the balance control module comprises a voltage data input unit, a voltage data comparison unit, a main controller unit and a control signal output unit, the monomer battery voltage collection module comprises a voltage data collection unit, a voltage data output unit and a DC-DC charging module control unit, and charging control signals are transmitted to each DC-DC charging module from the main controller unit through the control signal output unit and the DC-DC charging module control unit, so the voltage balance of each monomer battery is ensured. The automobile power battery balance system provided by the utility model has the advantages of ingenious design, simple and compact structure, little energy waste, high charging efficiency, good balance performance and wide use range.
Description
Technical field
The utility model relates to the equalizing system technical field, more specifically, relates to electrokinetic cell equalizing system technical field, is meant a kind of automobile power cell equalizing system especially.
Background technology
Power battery pack is the key components and parts of restriction electric vehicle industrialization process.When some batteries reached discharge cut-off voltage in the Battery pack, whole Battery pack just can not be worked, and has reduced the continual mileage of electric automobile.Provide enough power to electric automobile, often needing a plurality of storage batterys are contacted just can reach required magnitude of voltage, and this magnitude of voltage is more high than the magnitude of voltage of single battery.For easy to use, battery pack is made power supply of as a whole employing with it and is charged when charging.Because the characteristic of single battery always there are differences, therefore the voltage of each battery is not quite similar in charging process, then also is not full of thereby the battery that causes having has fully completely filled the battery that has.When charging termination, each battery charge does not reach equilibrium, again can guiding discharge unbalanced.Even make individual cell cause polarity reversal because of deep discharge, shortened the life-span of battery pack.In order to prolong the useful life of battery pack, must make all batteries all remain on the same degree of depth that discharges and recharges, promptly need battery pack is carried out balance charge/discharge.
Solve the whole pool-size of series battery because it is to adopt balanced strategy that a few batteries self characters cause phenomenon on the low side, promptly capacity battery on the low side is mended electricity, thereby improve whole pool-size.Traditional equalization methods: in general battery management system, each battery unit all is connected to a load resistance by a switch.This passive circuit can be to indivedual selected cell discharges.But this method only is applicable to that the voltage that suppresses forceful electric power pool unit under charge mode is soaring.Be limit dissipation power, this type of circuit is general only to be allowed with the low discharging current about 100mA, thereby the balance time-consuming that causes charging is longer, and the consumption of energy is arranged, and produces a large amount of heat, and efficient is lower.In addition, the equalization methods that has then is to realize equalizing charge by a cover device for converting electric energy; What have then is the multichannel way of output that adopts electric energy, send unnecessary energy to total loop or pass to adjacent battery, but its scheme circuit is formed and control structure is very complicated; What have then need establish special energy converter device, but use face is narrower.
For the problems referred to above and the defective that solves existence, a kind of novel automobile power cell equalizing system need be provided, it is simple for structure, and energy dissipation is few, the charge efficiency height, harmonious good, use face is wider.
The utility model content
Main purpose of the present utility model is exactly the problems and shortcomings at above existence, a kind of automobile power cell equalizing system is provided, this automobile power cell equalizing system design is ingenious, simple for structure, energy dissipation is few, and the charge efficiency height is harmonious good, use face is wider, is suitable for large-scale promotion application.
To achieve these goals, automobile power cell equalizing system of the present utility model, be characterized in, comprise balanced control module, monomer battery voltage acquisition module and several DC-DC charging modules, described balanced control module is electrically connected several described DC-DC charging modules respectively by described monomer battery voltage acquisition module.
Preferably, described balanced control module comprises voltage data input unit, voltage data comparing unit, Main Control Unit and control signal output unit, described voltage data input unit be linked in sequence described voltage data comparing unit, Main Control Unit and control signal output unit, described voltage data input unit connects described monomer battery voltage acquisition module, and described control signal output unit connects described DC-DC charging module by described monomer battery voltage acquisition module.
Preferably, described monomer battery voltage acquisition module comprises the voltage data collecting unit, voltage data output unit and DC-DC charging module control unit, the input of described voltage data collecting unit connects described each DC-DC charging module, the output of described voltage data collecting unit connects the input of described voltage data output unit, the output of described voltage data output unit connects the input of described balanced control module, the input of described DC-DC charging module control unit is connected in described balanced control module, and the output of described DC-DC charging module control unit is connected in described each DC-DC charging module.
Preferably, described each DC-DC charging module includes interconnective switch element and charhing unit, and described switch element also connects described monomer battery voltage acquisition module.
Preferably, described DC-DC charging module has vehicle-mounted plug.
Preferably, described automobile power cell equalizing system also comprises cell replacing suggestion device, and described cell is changed suggestion device and is electrically connected with described balanced control module.
More preferably, described cell replacing suggestion device is auditory tone cues device or visual cues device.
Further, described auditory tone cues device is a loud speaker, and described visual cues device is display unit or indicating lamp.
Especially more preferably, described display unit is the LED display unit, and described indicating lamp is color indicating lamp, symbol indicating lamp tool or figure indicating lamp.
The beneficial effects of the utility model are specific as follows:
1. automobile power cell equalizing system of the present utility model comprises balanced control module, monomer battery voltage acquisition module and several DC-DC charging modules, balanced control module is electrically connected several DC-DC charging modules respectively by the monomer battery voltage acquisition module, need when balanced when detecting certain or some cells, open the corresponding energy-saving charging of DC-DC charging module, design ingenious, simple for structure, energy dissipation is few, the charge efficiency height, harmonious good, use face is wider, is suitable for large-scale promotion application.
2. automobile power cell equalizing system of the present utility model also comprises cell replacing suggestion device, cell is changed suggestion device and is electrically connected with balanced control module, balanced control module can judge whether unusual battery reaches the replacing condition, change as need, change suggestion device reminding user to replace relevant monomer battery by cell, design ingenious, simple for structure, easy to use, be suitable for large-scale promotion application.
Description of drawings
Fig. 1 is the application schematic diagram of a specific embodiment of the present utility model.
Embodiment
For better understanding content of the present utility model, be described further below in conjunction with specific embodiment.
See also shown in Figure 1, automobile power cell equalizing system of the present utility model comprises balanced control module, monomer battery voltage acquisition module and several DC-DC charging modules, and described balanced control module is electrically connected several described DC-DC charging modules respectively by described monomer battery voltage acquisition module.
Preferably, described balanced control module comprises voltage data input unit, voltage data comparing unit, Main Control Unit and control signal output unit, described voltage data input unit be linked in sequence described voltage data comparing unit, Main Control Unit and control signal output unit, described voltage data input unit connects described monomer battery voltage acquisition module, and described control signal output unit connects described DC-DC charging module by described monomer battery voltage acquisition module.
Preferably, described monomer battery voltage acquisition module comprises the voltage data collecting unit, voltage data output unit and DC-DC charging module control unit, the input of described voltage data collecting unit connects described each DC-DC charging module, the output of described voltage data collecting unit connects the input of described voltage data output unit, the output of described voltage data output unit connects the input of described balanced control module, the input of described DC-DC charging module control unit is connected in described balanced control module, and the output of described DC-DC charging module control unit is connected in described each DC-DC charging module.
Preferably, described each DC-DC charging module includes interconnective switch element and charhing unit, and described switch element also connects described monomer battery voltage acquisition module.
In specific embodiment of the utility model, described DC-DC charging module has vehicle-mounted plug (not shown).Can transform the back then and give the cell equalizing charge by the power supply of car own as the input power supply.
Preferably, described automobile power cell equalizing system also comprises cell replacing suggestion device (not shown), and described cell is changed suggestion device and is used to point out the user to change relevant cell with described balanced control module electrical connection.
More preferably, described cell replacing suggestion device is auditory tone cues device or visual cues device.Further, described auditory tone cues device is a loud speaker, and described visual cues device is display unit or indicating lamp.
Especially more preferably, described display unit is the LED display unit, and described indicating lamp is color indicating lamp, symbol indicating lamp tool or figure indicating lamp.The for example different different cells of color representative, the battery that different symbologies is different, the perhaps different different batteries of figure representative.In specific embodiment of the utility model, it is the LED display unit that described cell is changed suggestion device.
Please refer again to Fig. 1, when the utility model uses, a plurality of cells of DC-DC charging module and electrokinetic cell be connected one to one, the power supply of vehicle-mounted plug and car of DC-DC charging module own is connected.The monomer battery voltage acquisition module is by DC-DC switch open and the charging process of closing the DC-DC charging module.
Equalization scheme:
The monomer battery voltage acquisition module is issued balanced control module with Information Monitoring and is diagnosed, and which cell needs equilibrium is balanced control module judge according to resulting monomer voltage information, and calculates the required time for balance of each balanced cell of need.Open the DC-DC switch that needs balanced cell by the monomer battery voltage acquisition module the balanced cell of need is carried out equilibrium, after time for balance reaches the time for balance that balanced control module calculates, close the DC-DC switch.In addition, balanced control module can judge whether unusual cell reaches the replacing condition, and changes suggestion device by cell and warn.
Concrete scheme is as follows:
When battery pack 1 is in discharge latter stage, whole group average size is less than 10% and leave standstill or during shallow discharge; Battery pack 1 continuous shallow discharge or leave standstill greater than after one minute, all monomer battery voltages that the monomer battery voltage acquisition module is gathered, and the information of voltage communication of each cell that will collect is judged the cell capacity for balanced control module, balanced control module to regard as more than 2% less than whole group average size and need balanced cell.The capacity and the battery pack average size of the balanced cell of need are defined as SOC respectively
BalanceAnd SOC
Average, calculate SOC
BalanceWith SOC
AverageDifference DELTA SOC.
If SOC
AverageWith SOC
BalanceDifference DELTA SOC, Δ SOC 〉=8% shows that this cell need change unusually, changes the suggestion device caution by cell, does not do equilibrium treatment.
If SOC
AverageWith SOC
BalanceDifference DELTA SOC＜8% then carries out equilibrium treatment to the need balancing battery.Promptly according to SOC
AverageWith SOC
BlanceDifference is calculated actual capacity difference, and calculates the balanced required time of balanced cell that needs according to the electric current that DC-DC sets.Balanced control module begins charging by monomer battery voltage acquisition module control corresponding D C-DC charging module, and calculates the charging interval; After the balanced cell of need reaches time for balance, close the DC-DC charging module, finish equilibrium.
In addition, if SOC
AverageWith SOC
BlanceDifference DELTA SOC, 6%≤Δ SOC＜8% then still carries out equilibrium treatment to the balanced cell of need, and balanced control module record corresponding battery number information (being defined as battery record to be replaced).If in the balanced back that process several (〉=1 time) is complete battery record to be replaced is arranged all continuously, then the battery number information of this cell is changed suggestion device by cell and warn, point out corresponding cell need carry out replacing information.
For example: 100AH battery pack average voltage 3.125V, be lower than average voltage surpass the 50mV cell have 5 batteries (regarding as needs balanced cell) (battery is numbered 2,20,40,50,70; Corresponding monomer voltage is respectively 3.051V, 2.911V, 2.733V, 2.625V, 2.15V etc.By look into SOC-monomer voltage correspondence table as can be known the corresponding Δ SOC of cell be respectively 2%, 4%, 6%, 7%, 8% (corresponding capacity volume variance is respectively 2Ah, 4Ah, 6Ah, 7Ah and 8Ah).
Then the cell of battery numbering 2,20,40 only carries out equilibrium; The cell of battery numbering 50 is done equilibrium treatment and is write down the cell numbering.If the DC-DC euqalizing current is 1A, then battery numbering 2,20,40,50 needs time for balance to be respectively 4 hours, 6 hours and 7 hours 2 hours.Balanced control module is issued voltage acquisition module with the battery number information and the time for balance of required balanced cell, voltage acquisition module is opened corresponding D C-DC switch and is carried out equilibrium, when balanced control module when balanced timing reaches corresponding time for balance (being respectively 2 hours, 4 hours, 6 hours, 7 hours) to the cell of battery numbering 2,20,40,50, balanced control module is given the monomer battery voltage acquisition module with information communication, voltage acquisition module is closed corresponding D C-DC switch, stops equilibrium.
Equilibrium treatment so change suggestion device prompting battery altering information warning by cell, is not done in cell Δ SOC 〉=8 of battery numbering 70.
Therefore, by automobile power cell equalizing system of the present utility model the balanced efficient of cell of battery pack 1 is improved greatly, and all can carry out equilibrium in Vehicular charging and the situation of travelling; The utility model can track record battery pack 1 in by the information of balanced cell, by to being judged the cell and the numbering thereof of required replacing by balanced cell information analysis, and carry out information indicating by the mode of reporting to the police and/or show; The utility model can be directly that consistency in the battery pack 1 is relatively poor cell reject, and warn.Thereby thereby solve the problem that current charge balancing exists energy consumption, the long inefficiency that causes of charge balancing time, and solve energy non-dissipative equalizing device and the control strategy complexity that has, the problem that range of application is narrower.In addition,, need to change or cell to be replaced thereby pick out, and point out, made things convenient for the management of battery management system greatly battery pack 1 situation through diagnosis by memory function to unusual cell.
In sum, automobile power cell equalizing system design of the present utility model is ingenious, simple for structure, and energy dissipation is few, the charge efficiency height, and harmonious good, use face is wider, is suitable for large-scale promotion application.
In this specification, the utility model is described with reference to its certain embodiments.But, still can make various modifications and conversion obviously and not deviate from spirit and scope of the present utility model.Therefore, specification and accompanying drawing are regarded in an illustrative, rather than a restrictive.
Claims (9)
1. automobile power cell equalizing system, it is characterized in that, comprise balanced control module, monomer battery voltage acquisition module and several DC-DC charging modules, described balanced control module is electrically connected several described DC-DC charging modules respectively by described monomer battery voltage acquisition module.
2. automobile power cell equalizing system according to claim 1, it is characterized in that, described balanced control module comprises the voltage data input unit, the voltage data comparing unit, Main Control Unit and control signal output unit, the described voltage data input unit described voltage data comparing unit that is linked in sequence, Main Control Unit and control signal output unit, described voltage data input unit connects described monomer battery voltage acquisition module, and described control signal output unit connects described DC-DC charging module by described monomer battery voltage acquisition module.
3. automobile power cell equalizing system according to claim 1, it is characterized in that, described monomer battery voltage acquisition module comprises the voltage data collecting unit, voltage data output unit and DC-DC charging module control unit, the input of described voltage data collecting unit connects described each DC-DC charging module, the output of described voltage data collecting unit connects the input of described voltage data output unit, the output of described voltage data output unit connects the input of described balanced control module, the input of described DC-DC charging module control unit is connected in described balanced control module, and the output of described DC-DC charging module control unit is connected in described each DC-DC charging module.
4. automobile power cell equalizing system according to claim 1 is characterized in that, described each DC-DC charging module includes interconnective switch element and charhing unit, and described switch element also connects described monomer battery voltage acquisition module.
5. automobile power cell equalizing system according to claim 1 is characterized in that, described DC-DC charging module has vehicle-mounted plug.
6. automobile power cell equalizing system according to claim 1 is characterized in that, described automobile power cell equalizing system also comprises cell replacing suggestion device, and described cell is changed suggestion device and is electrically connected with described balanced control module.
7. automobile power cell equalizing system according to claim 6 is characterized in that, it is auditory tone cues device or visual cues device that described cell is changed suggestion device.
8. automobile power cell equalizing system according to claim 7 is characterized in that, described auditory tone cues device is a loud speaker, and described visual cues device is display unit or indicating lamp.
9. automobile power cell equalizing system according to claim 8 is characterized in that, described display unit is the LED display unit, and described indicating lamp is color indicating lamp, symbol indicating lamp tool or figure indicating lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206745674U CN201877865U (en) | 2010-12-22 | 2010-12-22 | Automobile power battery balance system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206745674U CN201877865U (en) | 2010-12-22 | 2010-12-22 | Automobile power battery balance system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201877865U true CN201877865U (en) | 2011-06-22 |
Family
ID=44165774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206745674U Expired - Fee Related CN201877865U (en) | 2010-12-22 | 2010-12-22 | Automobile power battery balance system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201877865U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103023351A (en) * | 2012-12-04 | 2013-04-03 | 上海交通大学 | Electric automobile charging/discharging/storing integral station power flow three-level converter |
| CN104620467A (en) * | 2012-09-15 | 2015-05-13 | 德克萨斯仪器股份有限公司 | System and method for battery pack management using predictive balancing |
| CN106799971A (en) * | 2016-12-12 | 2017-06-06 | 芜湖市吉安汽车电子销售有限公司 | The control system that new-energy automobile assembled battery bag is used |
| CN110682831A (en) * | 2018-06-19 | 2020-01-14 | 广州汽车集团股份有限公司 | Vehicle-mounted power battery equalization method and device and automobile |
-
2010
- 2010-12-22 CN CN2010206745674U patent/CN201877865U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104620467A (en) * | 2012-09-15 | 2015-05-13 | 德克萨斯仪器股份有限公司 | System and method for battery pack management using predictive balancing |
| US9979211B2 (en) | 2012-09-15 | 2018-05-22 | Texas Instruments Incorporated | System and method for battery pack management using predictive balancing |
| CN104620467B (en) * | 2012-09-15 | 2018-08-28 | 德克萨斯仪器股份有限公司 | Use the system and method for prediction management of balance battery pack |
| US10778014B2 (en) | 2012-09-15 | 2020-09-15 | Texas Instruments Incorporated | System and method for battery pack management using predictive balancing |
| CN103023351A (en) * | 2012-12-04 | 2013-04-03 | 上海交通大学 | Electric automobile charging/discharging/storing integral station power flow three-level converter |
| CN103023351B (en) * | 2012-12-04 | 2015-01-21 | 上海交通大学 | Electric automobile charging/discharging/storing integral station power flow three-level converter |
| CN106799971A (en) * | 2016-12-12 | 2017-06-06 | 芜湖市吉安汽车电子销售有限公司 | The control system that new-energy automobile assembled battery bag is used |
| CN110682831A (en) * | 2018-06-19 | 2020-01-14 | 广州汽车集团股份有限公司 | Vehicle-mounted power battery equalization method and device and automobile |
| CN110682831B (en) * | 2018-06-19 | 2021-05-14 | 广州汽车集团股份有限公司 | Vehicle-mounted power battery equalization method and device and automobile |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105116819B (en) | A kind of battery management main system and its control method suitable for new-energy automobile | |
| CN103954917B (en) | A kind of cell test simulator and implementation method | |
| CN103701171A (en) | Equalizing charge control system for battery pack of HEV (Hybrid Electric Vehicle) | |
| CN103970022B (en) | A kind of based on GM(1, N) balance control method of grey forecasting model | |
| CN102280912A (en) | Equalization circuit of charge and discharge circuit of battery pack | |
| CN201877865U (en) | Automobile power battery balance system | |
| CN103178620B (en) | Mobile photovoltaic power generation and off-peak electricity energy storage control system for lithium batteries | |
| CN103956801A (en) | Pack to Cell equalization circuit based on LC resonant converter and implementation method thereof | |
| CN104505892A (en) | Intelligent control system of charging and discharging battery pack | |
| CN203930015U (en) | A kind of cell test simulator | |
| CN202856408U (en) | Vehicle-borne photovoltaic charging device for electric vehicle | |
| CN203135473U (en) | Non-energy consumption battery charge equalizing apparatus | |
| CN201947013U (en) | A power supply manage system for compensating and balancing voltage difference | |
| CN103296740A (en) | Automatic switching method of battery pack | |
| CN202749870U (en) | Storage battery intelligent uniform charging controller for grid-disconnection type wind and light complementary power generation system | |
| CN203086217U (en) | Lithium battery management system used for electromobile | |
| CN109278589A (en) | Two-way active equalization batteries of electric automobile monitoring system and control method based on PIC single chip microcomputer | |
| CN103475078B (en) | A kind of charging device of high-power power battery group | |
| CN204103539U (en) | A kind of battery of electric vehicle management system | |
| CN204669009U (en) | A kind of electric-vehicle-mounted lithium battery charging system | |
| CN201859926U (en) | Automatic charging and balance maintaining diagnosis device of battery pack | |
| CN203859563U (en) | Pack to Cell equalization circuit based on LC resonant conversion | |
| CN201327529Y (en) | Lithium-ion power battery grouping monitor system | |
| CN204736714U (en) | Electric motor car with two power supply unit | |
| CN105826989A (en) | Intelligently controlled and balanced battery management system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110622 Termination date: 20171222 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |