CN103407379A - Centralized initiative balancing device for electric vehicle battery management system - Google Patents
Centralized initiative balancing device for electric vehicle battery management system Download PDFInfo
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- CN103407379A CN103407379A CN201310298032XA CN201310298032A CN103407379A CN 103407379 A CN103407379 A CN 103407379A CN 201310298032X A CN201310298032X A CN 201310298032XA CN 201310298032 A CN201310298032 A CN 201310298032A CN 103407379 A CN103407379 A CN 103407379A
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
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Abstract
The invention relates to a centralized initiative balancing device for an electric vehicle battery management system. The centralized initiative balancing device comprises a balancing controller, a guide rail, balancing executing mechanisms, a balancing arm, balancing contacts A, balancing wiring harnesses, a communication bus and balancing contacts B. According to the centralized initiative balancing device, balancing can be carried out on specific units in all unit batteries to enable the specific units to keep the consistency with other unit batteries, and the service life of a whole battery pack is prolonged. A centralized balancing control mode is adopted, and battery packs with the huge amount can be simultaneously balanced through the one or more balancing executing mechanisms. The balancing executing mechanisms are driven by motors to move through the guide rail, accurate location in three-dimensional space can be achieved, and sufficient and reliable contact between the balancing executing mechanisms and the balancing contacts is ensured. The balancing executing mechanisms can bear large-current charging and large-current discharging, therefore, rapid balancing on the unit batteries can be achieved, the balancing time is shortened, and the balancing efficiency is improved.
Description
Technical field
The invention belongs to the electric vehicle engineering field, relate to a kind of battery active equalization Zhuan Ge, be specifically related to a kind of centralized active equalization Zhuan Ge for battery management system.
Background technology
Electrokinetic cell generally adopts series system to connect, there is inconsistency in cell in manufacture, initial capacity, voltage, internal resistance, in battery pack, the temperature of each cell is all incomplete same, in use, can cause overcharging and the overdischarge phenomenon of certain cell, when serious, can cause other battery cells of volume ratio of indivedual battery cells all low, in discharge process, its electric weight is in discharge process, and at first its electric weight discharges.For the electrokinetic cell to after series connection, protect, have to stop the electric discharge of whole battery pack, period of service and the capacity of whole battery pack caused to great injury.In fact the actual capacity of emitting in a Battery pack is that piece lithium ion battery by the actual capacity minimum determines, when namely this battery cell capacity came to an end, other battery cells can't work on.
In the process of charging of power battery pack, be also like this.In process of charging, at first at first the exhausted cell monomer, can be filled again, so just there will be the phenomenon of overcharging, and makes whole battery pack normally not to be fully charged.Therefore in the energy-storage battery working process of mixed power electric car, the malconformation between battery cell is a battery operated very harmful factor of impact, and it is extremely to be necessary that battery pack is carried out to active equalization control.
Summary of the invention
Problem for the prior art existence, the present invention proposes a kind of centralized active equalization Zhuan Ge for cell management system of electric automobile, by in battery management system, adding centralized active equalization Zhuan Ge, on one's own initiative the battery of needs equilibrium carried out to corresponding equilibrium, by controlling its charging or being discharged to setting voltage, thereby guarantee the conformability of battery pack, realize the close of battery pack life-span to battery cell life-span, improve the in-use performance of battery pack.
A kind of centralized active equalization dress Ge for cell management system of electric automobile, comprise balance controller, guide rail, balanced actuating unit, balanced arm, balanced contact A, balanced wire harness, communication bus, balanced contact B;
Battery management system gathers voltage, the SOC information of cell, obtains treating balanced cell, will treat that balanced cell information output is to balance controller, and SOC is the state-of-charge of cell;
The both positive and negative polarity of each cell connects respectively a balanced wire harness, and the other end of balanced wire harness connects a balanced contact A, and balanced contact A is arranged by the order of each battery cell, forms balanced contact A array;
Guide rail comprises x traversing guide, y traversing guide and carriage;
X traversing guide, y traversing guide connect by the carriage right-angled crossing, form orbit plane, the x traversing guide is by carriage guide rail translation in the y-direction, and while carriage reciprocal free guide rail in the x-direction back and forth moves, thereby realizes that carriage accurately moves to any point on orbit plane;
Balanced actuating unit one end connects carriage, and the other end connects balanced arm, and the other end of balanced arm connects two balanced contact B, and balanced contact B is positioned at the top that balanced contact A forms balanced contact A array;
Two balanced contact B on described orbit plane are corresponding with two balanced contact A on balanced contact array A, and two balanced contact A connect respectively the both positive and negative polarity of battery to be balanced monomer;
Balance controller is connected with battery management system by communication bus, in balance controller, be provided with voltage acquisition module, balance controller receives the balanced cell information for the treatment of of battery management system output, according to treating balanced cell information, balance controller is controlled balanced actuating unit and is moved on orbit plane, move to and treat balanced cell Dui Ying Wei Ge, balanced arm extends perpendicular to orbit plane, the balanced contact A that balanced contact B is corresponding with treating balanced cell both positive and negative polarity is connected, when balanced contact A and the fully reliable contact of balanced contact B, carry out equalization operation, voltage acquisition module is treated the voltage of balanced cell by balanced contact A collection, when battery cell reaches setting voltage after equilibrium after, complete balancing procedure, balanced arm shortens perpendicular to orbit plane, and balanced contact A breaks away from balanced contact B, is ready or is carried out new equalization operation by balance controller control.
The invention has the advantages that:
(1) the present invention can carry out equilibrium to the specific monomer in all cells, makes the conformability of its maintenance and other battery cells, extends the service life of battery pack integral body;
(2) the present invention adopts centralized balanced mode, by using one or more balanced actuating unit, can carry out the while equilibrium to the battery pack of flood tide, is specially adapted to the battery balanced management of electric automobile charging station;
(3) the balanced actuating unit that adopts of the present invention is driven by guide rail movement by motor, can realize the accurate location in three dimensional space, guarantees fully reliably contacting between balanced actuating unit and balanced contact;
(4) balanced actuating unit of the present invention can bear high current charge-discharge, thereby realizes the fast uniform of battery cell, has reduced time for balance, has improved balanced efficiency;
(5) nesting type structure is adopted in the balanced arm end and the balanced contact that the invention provides balanced actuating unit, when contact, allows the centering skew of certain limit between balanced arm and balanced contact, has improved the reliability of balanced actuating unit;
(6) centralized active balanced Zhuan Ge provided by the invention has modular advantage, can be integrated in battery box to miniaturization, also can maximize and namely be integrated into separately equalizing box (chamber).
The accompanying drawing explanation
Fig. 1: the schematic diagram of a kind of centralized active equalization Zhuan Ge for cell management system of electric automobile that the present invention proposes.
Fig. 2: the balanced actuating unit motion of the centralized active equalization Zhuan Ge schematic diagram that the present invention proposes.
Fig. 3: the centralized active equalization Zhuan of the maximization Ge schematic diagram that the present invention proposes.
Fig. 4: balanced arm end and balanced contact schematic diagram that the present invention proposes.
In figure:
The balanced arm of the balanced actuating unit 4-of 1-balance controller 2-guide rail 3-
The balanced contact B of the balanced wire harness 7-of the balanced contact A 6-of 5-communication bus 8-
9-insulating sleeve 201-x traversing guide 202-y traversing guide 203-carriage
The specific embodiment
The present invention is described in detail below in conjunction with accompanying drawing.
The invention provides a kind of centralized active equalization Zhuan Ge for cell management system of electric automobile, as shown in Figure 1, comprise balance controller 1, guide rail 2, balanced actuating unit 3, balanced arm 4, balanced contact A 5, balanced wire harness 6, communication bus 7, balanced contact B8.
Voltage, SOC(that battery management system gathers cell refer to state-of-charge.Claim again residual capacity) etc. information, obtain treating balanced cell, will treat that balanced cell information output is to balance controller 1;
The both positive and negative polarity of each cell connects respectively a balanced wire harness 6, and the other end of balanced wire harness 6 connects a balanced contact A 5, and balanced contact A 5 is arranged by the order of each battery cell, forms balanced contact A array;
As shown in Figure 2, guide rail 2 comprises x traversing guide 201, y traversing guide 202 and carriage 203;
X traversing guide 201, y traversing guide 202 connect by carriage 203 right-angled crossings, form orbit plane, x traversing guide 201 is by carriage 203 guide rail 202 translations in the y-direction, while carriage 203 reciprocal free guide rail 201 in the x-direction back and forth moves, thereby realizes that carriage 203 accurately moves to any point on orbit plane;
The implementation of described x traversing guide 201, y traversing guide 202 can be ball screw framework, or link chain mechanism, or the mechanism such as slide rail;
Balanced actuating unit 3 one ends connect carriage 203, and the other end connects balanced arm 4, and the other end of balanced arm 4 connects two balanced contact B8, and balanced contact B8 is positioned at the top that balanced contact A 5 forms balanced contact A array;
The type of drive of described balanced actuating unit 3 can drive or hydraulic-driven for pneumatic, motor;
Two balanced contact B8 on described orbit plane are corresponding with two balanced contact A 5 on balanced contact array A, and two balanced contact A 5 connect respectively the both positive and negative polarity of battery to be balanced monomer.
The driving method of described balanced arm 1 can be pneumatic, motor driving, hydraulic-driven or Electromagnetic Drive.
Micro controller system or other microprocessor of described balance controller 1 for having analog-digital conversion function.
Described communication bus 7 can be the wired bus of following the agreements such as CAN, LIN, or the wireless telecommunications buses such as ZIGBEE, bluetooth, or follows the bus of other communications protocol.
Described balanced wire harness 6 is made by the wire that can bear high current charge-discharge.
The present invention also provides the maximization scheme of a kind of centralized active equalization Zhuan Ge, the design of employing layer-stepping, every one deck include a set of of the present invention a kind of for cell management system of electric automobile centralized active equalization dress Ge, the balance controller 1 of each layer is connected to same battery management system by communication bus 7, as shown in Figure 3, in example, adopt 3 layers, every one deck has weighing apparatus controller 1, guide rail 2, balanced actuating unit 3, balanced arm 4, balanced contact A 5, communication bus 7, balanced contact B8, three layers of equalization subsystem are controlled by balance controller 1 separately, can realize that a plurality of battery cells are balanced simultaneously, improved balanced efficiency.
As shown in Figure 4, Fig. 4 is that balanced contact B8 aims at the Xiang Dui Wei Ge of balanced contact A 5, is about to contact balanced De Wei Ge for balanced contact A 5, balanced contact B8.
Balanced contact A 5 is the tubaeform formula structure that extends out of interior hollow, and balanced contact B8 is the frustum type structure, can form tight failure-free contact surface between the two, guarantees that balancing procedure can carry out reliable and securely.Balanced contact B8 and balanced contact A 5 have formed the structure of nested type, allow certain error of centralization, have the self-correction function, even there is certain deviation in centering, after the two contact, still can form tight failure-free contact surface, improve success ratio and the reliability of centering.The outer circle insulating sleeve 9 that is with of balanced contact A 5, can prevent the balanced arm fault that is short-circuited in the centering process, improved the safety and reliability of system.
Claims (10)
1. the centralized active equalization device for cell management system of electric automobile, comprise balance controller (1), guide rail (2), balanced actuating unit (3), balanced arm (4), balanced contact A (5), balanced wire harness (6), communication bus (7), balanced contact B(8);
Battery management system gathers voltage, the SOC information of cell, obtains treating balanced cell, will treat that balanced cell information output is to balance controller (1), and SOC is the state-of-charge of cell;
The both positive and negative polarity of each cell connects respectively a balanced wire harness (6), and the other end of balanced wire harness (6) connects a balanced contact A (5), and balanced contact A (5) is arranged by the order of each battery cell, forms balanced contact A array;
Guide rail (2) comprises x traversing guide (201), y traversing guide (202) and carriage (203);
X traversing guide (201), y traversing guide (202) connect by carriage (203) right-angled crossing, form orbit plane, x traversing guide (201) is by carriage (203) guide rail (202) translation in the y-direction, carriage (203) can back and forth freely guide rail (201) be mobile in the x-direction back and forth simultaneously, thereby realizes that carriage (203) accurately moves to any point on orbit plane;
Balanced actuating unit (3) one ends connect carriages (203), and the other end connects balanced arm (4), and the other end of balanced arm (4) connects two balanced contact B(8), balanced contact B(8) be positioned at the top that balanced contact A (5) forms balanced contact A array;
Two balanced contact B(8 on described orbit plane) corresponding with two the balanced contact A (5) on balanced contact array A, two balanced contact A (5) connect respectively the both positive and negative polarity of battery to be balanced monomer;
Balance controller (1) is connected with battery management system by communication bus (7), balance controller is provided with voltage acquisition module in (1), balance controller (1) receives the balanced cell information for the treatment of of battery management system output, according to treating balanced cell information, balance controller (1) is controlled balanced actuating unit (3) and is moved on orbit plane, move to and treat balanced cell correspondence position, balanced arm (4) extends perpendicular to orbit plane, make balanced contact B(8) with treating balanced contact A (5) corresponding to balanced cell both positive and negative polarity, be connected, as balanced contact A (5) and balanced contact B(8) fully reliable contact, carry out equalization operation, voltage acquisition module is treated the voltage of balanced cell by balanced contact A (5) collection, when battery cell reaches setting voltage after equilibrium after, complete balancing procedure, balanced arm (4) shortens perpendicular to orbit plane, balanced contact A (5) and balanced contact B(8) break away from, by balance controller (1) control, be ready or carry out new equalization operation.
2. a kind of centralized active equalization device for cell management system of electric automobile according to claim 1, the implementation of described x traversing guide (201), y traversing guide (202) is ball screw framework, or link chain mechanism, or the mechanism such as slide rail.
3. a kind of centralized active equalization device for cell management system of electric automobile according to claim 1, the type of drive of described balanced actuating unit (3) are that pneumatic, motor drives or hydraulic-driven.
4. a kind of centralized active equalization device for cell management system of electric automobile according to claim 1, the driving method of described balanced arm (1) are pneumatic, motor driving, hydraulic-driven or Electromagnetic Drive.
5. a kind of centralized active equalization device for cell management system of electric automobile according to claim 1, micro controller system or other microprocessor of described balance controller (1) for having analog-digital conversion function.
6. a kind of centralized active equalization device for cell management system of electric automobile according to claim 1, described communication bus (7) is the wired bus of following the agreements such as CAN, LIN, or the wireless telecommunications buses such as ZIGBEE, bluetooth, or follow the bus of other communications protocol.
7. a kind of centralized active equalization device for cell management system of electric automobile according to claim 1, described balanced wire harness (6) is made by the wire that can bear high current charge-discharge.
8. a kind of centralized active equalization device for cell management system of electric automobile according to claim 1, described balanced contact A (5) is the tubaeform formula structure that extends out of interior hollow, balanced contact B(8) be the frustum type structure, can form tight failure-free contact surface between the two.
9. a kind of centralized active equalization device for cell management system of electric automobile according to claim 1, the outer circle insulating sleeve (9) that is with of described balanced contact A (5).
10. based on the centralized active equalization device of a kind of maximization of claim 1, adopt the layer-stepping design, every one deck includes a set of centralized active equalization device, and the balance controller of each layer (1) is connected to same battery management system by communication bus (7).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310298032.XA CN103407379B (en) | 2013-07-16 | 2013-07-16 | Centralized initiative balancing device for electric vehicle battery management system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310298032.XA CN103407379B (en) | 2013-07-16 | 2013-07-16 | Centralized initiative balancing device for electric vehicle battery management system |
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| CN103407379A true CN103407379A (en) | 2013-11-27 |
| CN103407379B CN103407379B (en) | 2015-05-20 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106410895A (en) * | 2016-09-27 | 2017-02-15 | 北京新能源汽车股份有限公司 | Battery equalization device, automobile battery equalization system and equalization method |
| CN107508006A (en) * | 2017-07-24 | 2017-12-22 | 中航锂电（江苏）有限公司 | A kind of automatic equalization battery tray |
| 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 |
| CN112874326A (en) * | 2021-01-18 | 2021-06-01 | 华霆（合肥）动力技术有限公司 | Voltage balancing device, power supply system and electric vehicle |
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| EP2244349A1 (en) * | 2009-04-22 | 2010-10-27 | FRIWO Gerätebau GmbH | Battery charger and method for charging a battery |
| US20110156658A1 (en) * | 2009-12-29 | 2011-06-30 | Schneider Electric USA, Inc. | Active Communications Bus Power Harvester For Differential Signal Communication System |
| CN102122836A (en) * | 2011-04-01 | 2011-07-13 | 北京航空航天大学 | Charging/discharging active equalization circuit for lithium ion power battery pack |
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| EP2244349A1 (en) * | 2009-04-22 | 2010-10-27 | FRIWO Gerätebau GmbH | Battery charger and method for charging a battery |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106410895A (en) * | 2016-09-27 | 2017-02-15 | 北京新能源汽车股份有限公司 | Battery equalization device, automobile battery equalization system and equalization method |
| CN106410895B (en) * | 2016-09-27 | 2019-07-09 | 北京新能源汽车股份有限公司 | Battery equalization device, automobile battery equalization system and equalization method |
| CN107508006A (en) * | 2017-07-24 | 2017-12-22 | 中航锂电（江苏）有限公司 | A kind of automatic equalization battery tray |
| 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 |
| CN112874326A (en) * | 2021-01-18 | 2021-06-01 | 华霆（合肥）动力技术有限公司 | Voltage balancing device, power supply system and electric vehicle |
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| CN103407379B (en) | 2015-05-20 |
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Application publication date: 20131127 Assignee: BEIJING HANGSHENG NEW ENERGY TECHNOLOGY CO., LTD. Assignor: Beihang University Contract record no.: 2017110000004 Denomination of invention: Centralized initiative balancing device for electric vehicle battery management system Granted publication date: 20150520 License type: Common License Record date: 20170420 |
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