CN201812895U - Series battery pack equalization management system based on capacitor - Google Patents
Series battery pack equalization management system based on capacitor Download PDFInfo
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- CN201812895U CN201812895U CN2010202266721U CN201020226672U CN201812895U CN 201812895 U CN201812895 U CN 201812895U CN 2010202266721 U CN2010202266721 U CN 2010202266721U CN 201020226672 U CN201020226672 U CN 201020226672U CN 201812895 U CN201812895 U CN 201812895U
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- battery
- electric capacity
- battery pack
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- management system
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The utility model provides a series battery pack equalization management system based on a capacitor. The system comprises a power supply connected with a series battery pack, a main controller connected with the power supply, and a motor, a bench moving mechanism and a mobile bench which are connected in sequence; a mobile controller and a capacitor equalization device are mounted on the mobile bench; the mobile controller is connected with at least two contact detection contacts and the capacitor equalization device; management contacts are arranged at the two ends of the capacitor of the capacitor equalization device; each battery in the series battery pack is connected with two contracts; and the motor is connected with the main controller. While the series battery pack starts to work, the mobile controller detects the voltage of each battery in the battery pack in sequence; and when the voltage of any battery is lower or higher than a standard value, the mobile controller transmits information to an upper computer, and the upper computer sends instructions to the main controller, so as to enable the motor to drive the mobile bench to move till the management contacts are connected with an anode and a cathode of a battery to be equalized; and a capacitor management device charges or discharges the battery to be equalized.
Description
Technical field
The utility model relates to a kind of batteries management system, especially a kind of balanced management system for series connected battery pack based on electric capacity.
Background technology
Term definition:
Monocell: the basic battery unit of non-series connection.
Univoltage: the voltage of monocell.
Serial number: the number of the monocell that series system connects in the battery pack or represent with N.
Euqalizing current: the electric current when regulating the monocell electric weight.
The use of single battery, battery management system is the simplest, and situation was then different when series connection was used.The consistency of battery has determined the performance of battery, life-span and fail safe, as long as the degradation of a battery is promptly arranged, the performance of whole battery group is all with variation.
1, wherein have the capacity of a battery on the low side, the result be when charging this battery at first reach charging upper limit cut-ff voltage, and at first reach discharge lower limit cut-ff voltage during discharge.The capacity of this battery determines the capacity of this battery pack so.
If 2 initial conditions have the voltage of a battery on the low side, this battery does not reach cut-ff voltage and can not be full of during charging.This battery at first arrives to discharge and ends during discharge.It is intact tele-release in advance again that battery is not full of electricity, and actual available electric weight is by the capacity decision of this battery.
If the polarization impedance and the internal resistance of 3 one batteries are higher, cell voltage rises soon during charging, and cell voltage descends fast during discharge.With regard to certain performance of once testing is exactly the off-capacity of this battery, and load capacity descends.Temperature drift when discharging and recharging.
The consistency that improves battery in the battery manufacture process also has sizable difficulty and the manufacturing expense that needs bigger input and will increase substantially battery causes the battery price high and be unfavorable for the fast development of ev industry.Current battery manufacturer or the battery combination factory strict screening technique of employing carry out battery and mate the consistency that improves battery.Even but the battery after the strict coupling just shows visible difference at the initial stage of circulation.The middle threshold voltage of discharge is having at the very start than big difference.Adopt the validity of battery coupling unsatisfactory.Especially it is emphasized that the increase with the battery cycle-index, battery consistency changes the undetectability of degree.The condition of work of battery and environment also can exert an influence to consistency.In a word, complicated and diversified influencing factor makes that deterministic general and accurate rule is difficult to obtain.
Except working hard aspect the consistency of battery itself, another kind of solution---battery balanced management more and more demonstrates importance.Balanced management is regulated the electric weight of every batteries by the mode that electric weight shifts.Balanced management can not only solve the problem of battery consistency in principle, and the life-span that can make that the poorest battery of performance in the series battery obtains prolonging, the improvement of battery performance simultaneously will make that also battery security improves, because after the battery performance variation, fail safe also decreases.The continuation of the journey mileage of battery and useful life and battery cost determination the destiny of electric automobile.Balanced management relates to the important ring that the electric automobile performance concerns just.Adopt balanced management, the coherence request of battery obviously reduces, and manufacture process is oversimplified, and cost also can decline to a great extent, as long as the performance of monocell meets the demands, the performance of battery pack just can meet the demands.China battery enterprise is numerous, and level is uneven.The balanced management The Application of Technology is the monoenergetic status of improving Chinese battery not, and can make more multiple enterprises have the ability to join in the competition of electric automobile and relevant industries thereof, makes whole industry more flourishing.Balanced management system will greatly promote the development of electric automobile effectively reliably.Itself having to become with electric automobile, and electronic public transport comprises electric bicycle, battery-operated motor cycle, large energy accumulation device, electric tool, communication base station stand-by power supply, the development in battery applications fields such as military power supply and the new industry of growing in strength.
But the problem of balanced management is at present effectively solved as yet.Battery balanced realization is mostly based on two basic physical concept: the electric current shunting is shifted with electric weight.
Electric current shunting is that the electric weight of battery that voltage is high bleeds off via resistance.The circuit structure of this method and control all more complicated, the resistance heating amount is big, and euqalizing current is restricted, is difficult to surpass 1A, only suitable low capacity, the occasion that the series-connected cell number is few.And the equilibrium when only being used to charge, there is not practical significance during discharge.At present at battery capacity 1-3Ah, series-connected cell is counted extensive use in the electric tool product of 2-5.MAXIM, Intersil, all there is special-purpose product in u s companys such as O2, also can be realized by the MCU technology.The typical circuit structure of electric weight transfer method is that American TI Company is put forward justice, and the two-way harmless notion of in the industry cycle generally being praised highly.But this thinking is more complicated, and discrete component is many, and the complexity of control is also higher.Require each battery to be equipped with a balanced loop, reliability decrease, cost rises, and almost can't safeguard.If require bigger euqalizing current then variety of issue will be more outstanding.Every batteries needs two MOSs, in case one tunnel device failure is arranged, it is high to produce short risk.This fail safe to battery and car load is totally unfavorable.
The tempting part of two-way harmless notion is the electric weight of the high battery of voltage to be transferred to the low battery of voltage get on, but to transmit electric weight one by one by the battery of adjacency, this multiple energy transmission is returned and is caused bigger energy loss, and this is balanced unfavorable to discharge process.This method is difficult to realize the problem of big current balance equally.Often all about 100Ah, electronic public transport reaches 200Ah to the batteries of electric automobile capacity.Too small euqalizing current is with meaning out of balance, and the various principles of big current balance are also uncomplicated.Difficulty is that realizability is poor, and reliability is low, and security risk is big, the cost height.Therefore mostly to be the Data Detection collection be main to present cell management system of electric automobile, the function of rare management.The utility model proposes and can realize charging and discharging and can both carry out big current balance, the design of the simple and reliable battery management system that is easy to realize and device can effectively solve the problem that at present big capacity multiple batteries string quantity batteries management system exists.
The utility model content
In order to overcome above-mentioned technical problem, the utility model provides a kind of balanced management system for series connected battery pack based on electric capacity, comprise power supply, power supply links to each other with series battery, also comprise the master controller that links to each other with power supply, the motor of Xiang Lianing successively, stage motion mechanism, mobile stand, mobile controller and electric capacity balancer are installed on the mobile stand, mobile controller connects at least two contacts and detects the contact, mobile controller is connected with the electric capacity balancer, the electric capacity two ends of electric capacity balancer are provided with the management contact, and the every batteries of series battery all connects two contacts, and motor is connected with master controller.
Preferably, described master controller and mobile controller are any one among single-chip microcomputer, PLC control circuit, the DSP.
Preferably, described electric capacity balancer is provided with contact switch.
Preferably, described master control is connected with mobile controller.
Preferably, be connected with charge switch between described master controller and the series battery.
Preferably, be connected with discharge switch between described master controller and the series battery.
Preferably, described charge switch is any one in MOS switch, IGB switch, the relay.
Preferably, described discharge switch is any one in MOS switch, IGB switch, the relay.
Preferably, described master controller all is connected by power supply with stepping motor.
Preferably, described electric capacity is ordinary capacitor or ultracapacitor or battery.
When series battery is started working, every batteries voltage, electric current, temperature in the mobile controller sequence detection battery pack, when any batteries voltage is below or above standard value, mobile controller is passed to host computer with information, host computer makes motor-driven move stand to master controller transmission instruction and moves, until the management contact and battery to be balanced is positive and negative joins, the capacitance management device is that battery to be balanced charges or discharges.
Description of drawings:
Fig. 1 is the control system block diagram of a kind of specific embodiment of the utility model;
Fig. 2 is the control system block diagram of the another kind of specific embodiment of the utility model;
Embodiment:
In conjunction with the accompanying drawings, below the utility model is further described.
A kind of balanced management system for series connected battery pack based on electric capacity, comprise power supply, power supply links to each other with series battery, also comprise the master controller that links to each other with power supply, the motor of Xiang Lianing, stage motion mechanism, mobile stand successively, mobile controller and electric capacity balancer are installed on the mobile stand, mobile controller connects at least two contacts and detects the contact, mobile controller is connected with the electric capacity balancer, the electric capacity two ends of electric capacity balancer are provided with the management contact, the every batteries of series battery all connects two contacts, and stepping motor is connected with master controller.Described master controller and mobile controller are single-chip microcomputer.Described electric capacity balancer is provided with contact switch.Described master control is connected with mobile controller, and master controller can be a host computer.Be connected with charge switch between described master controller and the series battery.Be connected with discharge switch between described master controller and the series battery.Described charge switch is any one in MOS switch, IGB switch, the relay.Described discharge switch is any one in MOS switch, IGB switch, the relay.Described master controller all is connected by power supply with stepping motor.Described electric capacity is the battery of ordinary capacitor or ultracapacitor or any kind.
When series battery is started working, motor-driven moves stage motion, be installed in capacitor and management contact movement therewith on the stand, just realized after managing the contact and battery contact contacting that the energy between battery and the capacitor shifts, constantly repeated the equilibrium that this process has promptly realized battery pack.
The a plurality of electric capacity of portability are accelerated balanced progress on the stand, and the while is the little low value capacitor of available volume also, save dimensional space.Embodiment see Fig. 1.
On the basis of above-mentioned basic embodiment, also capacitor contact switch and mobile controller can be installed on mobile stand.Controller can be with the voltage of battery, temperature, and internal resistance, parameter detecting such as distortion are come out, and according to the State Control contact switch of battery, thereby realize selectively balanced.
After adding power supply, can be to master controller and motor power supply.
Foregoing description only is a kind of specific embodiment of the present utility model, and wherein the contact integral layout of series battery can be any one in loop configuration or many loop types, linear structure, matrix structure, the stepped construction.Corresponding motion mode also can be annular shuttling movement, the equilibrium of linear reciprocation cycle, matrix endless form.Management is got an electric shock and can also be adopted other modes to be connected with battery contact, for example adopts telescopic contact, and controller control stand moves to assigned address, is controlled the action of contact again by controller.Can realize great-jump-forward like this, emphasis carries out equilibrium and detection to some battery.When the contact arrangement of series battery is annular or many rings, during the working method of the unidirectional continuous rotation of mobile stand, the holding wire of power supply and host computer can be guided to detecting unit and controller by the conducting slip ring that is installed on the rotating shaft.The transmission of signal or data realizes with accepting also available wireless or infrared mode, to reduce the quantity of slip ring.Also can positive and negative both direction non-whole circle rotation so just can be used lead and without slip ring.
A plurality of separate mobile stands can also be set, can be used for balanced a plurality of batteries simultaneously, raise the efficiency;
On the capacitance management device, switch is set, the switch of mobile controller control capacitance;
When series battery is annular, can make by the installation slip ring and rotate the purpose that reaches balanced management on the mobile stand, also can back and forth detect by individual pen;
Master controller and mobile controller can send data or receive instruction to the host computer of computer or other types.
When being full of, the open and close of main controller controls charge switch batch (-type) improving the fail safe of battery balanced management, and are full of back charge closing switch at the series battery electric weight at the series battery electric weight.
The utility model can carry out analysis and judgement by detecting related datas such as cell voltage, electric current, temperature, carries out corresponding balanced management according to the concrete condition of data.
Owing to adopt the balanced principle simple, intuitive of capacitor, simple in structure being easy to realized.Reliability is expensive low.Maintenance maintenance is changed convenient.Capacitor charging/discharging speed is fast, therefore realizes big current balance easily.Detected data can be by bus or wireless or infrared mode transmission.
Detected data can be by bus or wireless or infrared mode transmission.
Application of the present utility model is suitable for the series battery that any kind battery constitutes, voltage is carried out in the balanced management of each energy-storage travelling wave tube in the similar electrical energy storage device such as series capacitor bank or bank of super capacitors simultaneously, temperature, internal resistance, the detection of battery parameters such as distortion and data processing and transmission.
At last, it is also to be noted that what more than enumerate only is specific embodiment of the utility model, obviously, the utility model is not limited to above examples of implementation, and many distortion can also be arranged.All distortion that those of ordinary skill in the art can directly derive or associate from the disclosed content of the utility model all should be thought protection range of the present utility model.
Claims (9)
1. balanced management system for series connected battery pack based on electric capacity, it is characterized in that, comprise power supply, power supply links to each other with series battery, also comprise the master controller that links to each other with power supply, the motor of Xiang Lianing successively, stage motion mechanism, mobile stand, mobile controller and electric capacity balancer are installed on the mobile stand, mobile controller connects at least two contacts and detects the contact, mobile controller is connected with the electric capacity balancer, the electric capacity two ends of electric capacity balancer are provided with the management contact, and the every batteries of series battery all connects two contacts, and stepping motor is connected with master controller.
2. the balanced management system for series connected battery pack based on electric capacity according to claim 1 is characterized in that, described master controller and mobile controller are any one among single-chip microcomputer, PLC control circuit, the DSP.
3. the balanced management system for series connected battery pack based on electric capacity according to claim 1 is characterized in that, described electric capacity balancer is provided with contact switch.
4. the balanced management system for series connected battery pack based on electric capacity according to claim 1 is characterized in that described master control is connected with mobile controller.
5. the balanced management system for series connected battery pack based on electric capacity according to claim 1 is characterized in that, is connected with charge switch between described master controller and the series battery.
6. the balanced management system for series connected battery pack based on electric capacity according to claim 1 is characterized in that, is connected with discharge switch between described master controller and the series battery.
7. the balanced management system for series connected battery pack based on electric capacity according to claim 1 is characterized in that, described charge switch is any one in MOS switch, IGB switch, the relay.
8. the balanced management system for series connected battery pack based on electric capacity according to claim 1 is characterized in that, described discharge switch is any one in MOS switch, IGB switch, the relay.
9. the balanced management system for series connected battery pack based on electric capacity according to claim 1 is characterized in that described master controller all is connected by power supply with stepping motor, and described electric capacity is ordinary capacitor or ultracapacitor or battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202266721U CN201812895U (en) | 2010-06-11 | 2010-06-11 | Series battery pack equalization management system based on capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202266721U CN201812895U (en) | 2010-06-11 | 2010-06-11 | Series battery pack equalization management system based on capacitor |
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| Publication Number | Publication Date |
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| CN201812895U true CN201812895U (en) | 2011-04-27 |
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| CN2010202266721U Expired - Lifetime CN201812895U (en) | 2010-06-11 | 2010-06-11 | Series battery pack equalization management system based on capacitor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101882803A (en) * | 2010-06-11 | 2010-11-10 | 李小平 | Balanced management system of series battery pack on basis of capacitance and management method thereof |
| WO2014177062A1 (en) * | 2013-04-30 | 2014-11-06 | 台湾立凯绿能移动股份有限公司 | Large-scale electric vehicle power architecture and battery pack rotating rest scheduling control method therefor |
-
2010
- 2010-06-11 CN CN2010202266721U patent/CN201812895U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101882803A (en) * | 2010-06-11 | 2010-11-10 | 李小平 | Balanced management system of series battery pack on basis of capacitance and management method thereof |
| CN101882803B (en) * | 2010-06-11 | 2013-02-13 | 李小平 | Balanced management system of series battery pack on basis of capacitance and management method thereof |
| WO2014177062A1 (en) * | 2013-04-30 | 2014-11-06 | 台湾立凯绿能移动股份有限公司 | Large-scale electric vehicle power architecture and battery pack rotating rest scheduling control method therefor |
| CN105531866A (en) * | 2013-04-30 | 2016-04-27 | 台湾立凯绿能移动股份有限公司 | Large-scale electric vehicle power architecture and battery pack rotating rest scheduling control method therefor |
| US9592745B2 (en) | 2013-04-30 | 2017-03-14 | Aleees Eco Ark (Cayman) Co. Ltd. | Large electric vehicle power structure and alternating-hibernation battery management and control method thereof |
| CN105531866B (en) * | 2013-04-30 | 2018-03-20 | 英属盖曼群岛商立凯绿能移动科技股份有限公司 | Large Electric car power supply structure and its battery case have holidays by turns sequence control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110427 Effective date of abandoning: 20130306 |
|
| RGAV | Abandon patent right to avoid regrant |