CN102916158B - A kind of safeguard construction of power battery pack - Google Patents
A kind of safeguard construction of power battery pack Download PDFInfo
- Publication number
- CN102916158B CN102916158B CN201110223748.4A CN201110223748A CN102916158B CN 102916158 B CN102916158 B CN 102916158B CN 201110223748 A CN201110223748 A CN 201110223748A CN 102916158 B CN102916158 B CN 102916158B
- Authority
- CN
- China
- Prior art keywords
- battery pack
- cell
- wiring board
- power battery
- safeguard construction
- 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.)
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- 238000010276 construction Methods 0.000 title claims abstract description 24
- 239000012212 insulator Substances 0.000 claims abstract description 7
- 239000011159 matrix material Substances 0.000 claims abstract description 6
- 238000009423 ventilation Methods 0.000 claims description 5
- 238000002955 isolation Methods 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 238000009792 diffusion process Methods 0.000 abstract description 2
- 230000035939 shock Effects 0.000 abstract description 2
- 210000004027 cell Anatomy 0.000 description 47
- 229910052744 lithium Inorganic materials 0.000 description 7
- 239000005955 Ferric phosphate Substances 0.000 description 6
- 229940032958 ferric phosphate Drugs 0.000 description 6
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 description 6
- 229910000399 iron(III) phosphate Inorganic materials 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000035508 accumulation Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 210000004457 myocytus nodalis Anatomy 0.000 description 1
Classifications
-
- 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 invention discloses a kind of safeguard construction of power battery pack, this battery pack comprises the cell that M layer is the arrangement of N × P matrix, between often adjacent two-layer cell, correspondence is cascaded, wherein, reinforced wiring board is connected with between described often adjacent two-layer cell, described reinforced wiring board comprises N × P for connecting the electrode connecting piece of cell polarity, conduction mainboard, for the insulator of insulate isolated electrode brace and conduction mainboard, described reinforced wiring board is also installed on the safeties that two ends are electrically connected to conduction mainboard and electrode connecting piece respectively.Compared with prior art, owing to having added reinforced wiring board, the shock resistance of battery pack can not only have been ensured.On the other hand, if the phenomenon of short circuit appears in certain cell of internal battery pack, the blown fuse on reinforced wiring board will be made, prevent the diffusion of bad cell, protect the safety of battery pack.
Description
[technical field]
The present invention relates to the security technology area of power battery pack, particularly relate to the safeguard construction of the automobile-used power battery pack of a kind of applicable electric automobile, Electric Transit.
[background technology]
Ferric phosphate lithium cell, as a kind of novel lithium battery, represents the direction of battery future development, and it is the optimal electrokinetic cell invented up to now.Ferric phosphate lithium cell industry meets the guiding of national industrial policies, and each state is all placed on national strategy floor height its development, and the dynamics of supporting funds and policy support is very large.
Ferric phosphate lithium cell, as the new forms of energy of automobile, is widely used.But electric automobile and the voltage, electric current etc. of electric bus to battery all require higher, therefore, are provided with the battery pack that several ferric phosphate lithium cell series and parallels combine in the power supply box of electric automobile and electric bus.
Battery pack has first rear tandem plan in parallel, scheme in parallel after also having first series connection.Adopt the scheme of first and rear string, equilibrium mutually between cell in parallel, consistency is better.If but short trouble appears in a certain joint cell, it will become the load of other and its batteries in parallel connection, and the energy of all batteries in parallel with it discharges rapidly in fault cell, thus causes more serious consequence.Employing is the rear also scheme of string first, if certain joint cell breaks down, the energy of other cells can only be discharged by shunt circuit, and is absorbed by other battery in series circuit, discharges and stop when voltage is elevated to series connection group rated voltage.But first after string, also the battery pack balancing of scheme is difficult.Parallel branch is added in same row cell, balanced effect can be played to a certain extent, but this brings again other problem, that is: when short circuit appears in certain cell inside time, the all cells in parallel with this cell are all by external short circuit, the energy of all batteries in parallel with it discharges rapidly in fault cell, the temperature of fail battery sharply rises, may initiating failure battery explosion, finally leave huge potential safety hazard to the normal work of whole battery pack.
In addition, may there is violent jolting in electric automobile, electric bus, and the battery pack having several ferric phosphate lithium cell series and parallels to combine of installing in existing power supply box does not carry out aseismic design in the process of moving usually.
In view of above drawback, be necessary to provide a kind of safeguard construction of power battery pack to overcome above-mentioned defect in fact.
[summary of the invention]
The object of this invention is to provide a kind of safeguard construction of power battery pack, the safeguard construction of this power battery pack can contribute to the equilibrium of electric current in battery pack, voltage, and battery pack can be prevented to cause serious consequence because of the short circuit of cell, meanwhile, excellent Machine Design can prevent vehicle from shaking in the process of moving and cause battery pack to loosen.
To achieve these goals, the present invention adopts following technical scheme: a kind of safeguard construction of power battery pack, this battery pack comprises the cell that M layer is the arrangement of N × P matrix, between often adjacent two-layer cell, correspondence is cascaded, wherein, reinforced wiring board is connected with between described often adjacent two-layer cell, described reinforced wiring board comprises N × P for connecting the electrode connecting piece of cell polarity, conduction mainboard, for the insulator of insulate isolated electrode brace and conduction mainboard, described reinforced wiring board is also installed on the safeties that two ends are electrically connected to conduction mainboard and electrode connecting piece respectively.
Preferably, described safeties are enclosed fuse.
Preferably, the blowout current of described fuse is 0.5-20A.
Preferably, described M is more than or equal to 4.
Preferably, described reinforced wiring board offers some ventilation holes.
Preferably, the exterior contour of described electrode connecting piece is Pear-Shaped.
Preferably, described insulator be coated on electrode connecting piece exterior contour on so that by electrode connecting piece and the isolation of conduction mainboard.
Preferably, the most top layer of described battery pack and the electrode of bottom cell be connected to respectively total just or total negative plate, described total just or total negative plate be rigid metal plate.
Preferably, tighten together with nut and stud between the adjacent two layers of described battery pack.
Preferably, described reinforced wiring board and total just or the top of total negative plate offers the data line vias that some correspondences arrange.
Compared with prior art, the safeguard construction of power battery pack of the present invention, owing to having added reinforced wiring board, not only can ensure the shock resistance of battery pack, and also because described reinforced wiring board can allow between cell balanced mutually, consistency is good.On the other hand; if there is the phenomenon of short circuit in certain cell of internal battery pack; the blown fuse on reinforced wiring board will be made; thus the cell of the possible overcurrent in cell matrix is isolated from battery matrix; prevent the diffusion of fault cell, protect the safety of battery pack.
[accompanying drawing explanation]
Fig. 1 is the overall structure schematic diagram of the safeguard construction of power battery pack of the present invention;
The partial structurtes schematic diagram that Fig. 2 is the safeguard construction of power battery pack shown in Fig. 1;
The structural representation of the reinforced wiring board of the safeguard construction that Fig. 3 is power battery pack shown in Fig. 1;
Fig. 4 is the electric connection schematic diagram of the safeguard construction of battery pack of the present invention.
[embodiment]
Please refer to shown in Fig. 1 to Fig. 4, the safeguard construction of a kind of power battery pack of the present invention, this battery pack 100 comprises the cell 10 that M layer is the arrangement of N × P matrix, between often adjacent two-layer cell 10, correspondence is cascaded, be connected with reinforced wiring board 20 between often adjacent two-layer cell 10, the most top layer of battery pack 100 and the electrode of bottom cell are connected to total positive plate 30 and total negative plate 40 respectively.
The roughly rectangular shape of reinforced wiring board 20, it comprises N × P for connecting the electrode connecting piece 21 of cell 10 polarity (polarity can be divided into positive and negative electrode), conduction mainboard 22, for the insulator 23 of insulate isolated electrode brace 21 and conduction mainboard 22.Described reinforced wiring board 20 and total just or the top of total negative plate (30,40) offers the data line vias 24 that some correspondences arrange, these data wires are the parts belonging to battery pack system management.
Electrode connecting piece 21 exterior contour is Pear-Shaped, also offers can run through and the first through hole 25 be electrically connected for the electrode (positive and negative electrode) of cell at its substantial middle place.Electrode connecting piece 21 and conduction mainboard 22 are isolated on the exterior contour that insulator 23 is coated on electrode connecting piece 21.
Reinforced wiring board 20 is also installed on safeties 50, and described safeties 50 are enclosed fuse, and the two ends of fuse are electrically connected to conduction mainboard 22 and electrode connecting piece 21 respectively, and in the present invention, the blowout current of described fuse is 0.5-20A.
Because battery pack can produce a large amount of heats in the course of the work, these heat accumulations, hidden danger can be brought to the trouble free service of battery pack, therefore, reinforced wiring board 20 offers some ventilation holes 26, these ventilation hole 26 numbers are indefinite, but the position every reinforced wiring board of block 20 being offered ventilation hole is roughly the same, contribute to forming heat dissipation channel.
During assembling, first by the N × P of the bottom, (this embodiment selects N=4, P=5) negative pole of individual cell 10 is connected to total negative plate 40 (can select copper coin), then reinforced wiring board 20 sheathed on the positive pole of aforementioned monomer battery 10 is ensured the first through hole 25 of the through reinforced wiring board top electrode brace 21 of the positive pole of cell, N × P cell of successively being connected by the cell 10 being arranged with reinforced wiring board 20 again forms M layer (this embodiment selects M=4), finally by the Electrode connection of the most top layer cell of battery pack 100 to total positive plate 30 (can copper coin be selected), in the present invention, tighten together with nut and stud between the adjacent two layers of aforesaid battery pack 100, specifically, stud is welded with respectively by the two poles of the earth of a cell, when two batteries of connecting mutually connect, two cells of series connection just share a nut.In actual use, according to the safe voltage of ferric phosphate lithium cell design requirement, M must be selected to be more than or equal to 4, just can to reach good effect.
In the safeguard construction of power battery pack of the present invention, excessive to the internal battery pack electric current caused by certain cell generation internal short-circuit, when this cell generation internal short-circuit, the voltage of cell declines rapidly, because all cells in parallel with this cell are all shorted (external short circuit), now, fuse just can flow through very large electric current, so the blown fuse of these cells in parallel, like this, the cell of this internal short-circuit would not be subject to the reverse charging of batteries in parallel connection with it, thus protect the safety of battery pack.
The safeguard construction of power battery pack of the present invention, be not restricted to described in specification and execution mode, therefore additional advantage and amendment can easily be realized for the personnel of familiar field, therefore when not deviating from the spirit and scope of the universal that claim and equivalency range limit, the present invention is not limited to specific details, representational equipment and illustrates here and the examples shown described.
Claims (8)
1. the safeguard construction of a power battery pack, this battery pack comprises the cell that M layer is the arrangement of N × P matrix, between often adjacent two-layer cell, correspondence is cascaded, it is characterized in that: between described often adjacent two-layer cell, be connected with reinforced wiring board, described reinforced wiring board comprises N × P for connecting the electrode connecting piece of cell polarity, conduction mainboard, for the insulator of insulate isolated electrode brace and conduction mainboard, described reinforced wiring board is also installed on the safeties that two ends are electrically connected to conduction mainboard and electrode connecting piece respectively, described safeties are enclosed fuse, so that by electrode connecting piece and the isolation of conduction mainboard on the exterior contour that described insulator is coated on electrode connecting piece.
2. the safeguard construction of power battery pack as claimed in claim 1, is characterized in that: the blowout current of described fuse is 0.5-20A.
3. the safeguard construction of power battery pack as claimed in claim 1, is characterized in that: described M is more than or equal to 4.
4. the safeguard construction of power battery pack as claimed in claim 1, is characterized in that: described reinforced wiring board offers some ventilation holes.
5. the safeguard construction of power battery pack as claimed in claim 1, is characterized in that: the exterior contour of described electrode connecting piece is Pear-Shaped.
6. the safeguard construction of power battery pack as claimed in claim 1, is characterized in that: the most top layer of described battery pack and the electrode of bottom cell be connected to respectively total just or total negative plate, described total just or total negative plate be rigid metal plate.
7. the safeguard construction of power battery pack as claimed in claim 1, is characterized in that: tighten together with nut and stud between the adjacent two layers of described battery pack.
8. the safeguard construction of power battery pack as claimed in claim 1, is characterized in that: described reinforced wiring board and total just or the top of total negative plate offers the data line vias that some correspondences arrange.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110223748.4A CN102916158B (en) | 2011-08-05 | 2011-08-05 | A kind of safeguard construction of power battery pack |
| EP12161170.1A EP2555280B1 (en) | 2011-08-05 | 2012-03-26 | Improved electrode board having security device and power battery system using same |
| US13/443,898 US9660242B2 (en) | 2011-08-05 | 2012-04-11 | Electrode board having security device and power battery system using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110223748.4A CN102916158B (en) | 2011-08-05 | 2011-08-05 | A kind of safeguard construction of power battery pack |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102916158A CN102916158A (en) | 2013-02-06 |
| CN102916158B true CN102916158B (en) | 2016-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110223748.4A Active CN102916158B (en) | 2011-08-05 | 2011-08-05 | A kind of safeguard construction of power battery pack |
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| Country | Link |
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| CN (1) | CN102916158B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103178236A (en) * | 2013-03-07 | 2013-06-26 | 华霆（合肥）动力技术有限公司 | Lithium battery external over-current protection device |
| CN104241588A (en) * | 2013-06-18 | 2014-12-24 | 深圳市沃特玛电池有限公司 | Parallel connection safety structure of lithium ion battery pack |
| CN104466068B (en) * | 2014-10-27 | 2017-02-15 | 深圳市快车道新能源发展有限公司 | Method for connecting storage battery combined system |
| CN104409678B (en) * | 2014-12-05 | 2017-05-24 | 赛恩斯能源科技有限公司 | Power battery pack and protective current-conducting plate thereof |
| CN104900828A (en) * | 2015-05-13 | 2015-09-09 | 宁波格林美孚新材料科技有限公司 | Electric automobile chassis calculus battery pack |
| CN106299177A (en) * | 2015-06-08 | 2017-01-04 | 深圳市沃特玛电池有限公司 | A kind of structure utilizing pcb board to realize cell safety protection |
| DE102016116581A1 (en) * | 2016-06-03 | 2018-03-01 | E-Seven Systems Technology Management Ltd | Connection plate for a battery and battery |
| DE102016120838A1 (en) * | 2016-11-02 | 2018-05-03 | E-Seven Systems Technology Management Ltd | Board for the electrically secured connection of battery cells |
| CN111293267B (en) * | 2020-03-17 | 2022-03-15 | 先进储能材料国家工程研究中心有限责任公司 | Battery module with fusing protection function |
| CN114552085B (en) * | 2022-04-25 | 2022-07-12 | 嘉兴模度新能源有限公司 | Battery cap, easily-assembled single battery, battery pack and method for grouping single battery in battery box |
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| CN201303013Y (en) * | 2008-09-26 | 2009-09-02 | 富港电子（东莞）有限公司 | Battery module |
| CN201365119Y (en) * | 2009-01-16 | 2009-12-16 | 东莞新能源科技有限公司 | Power battery protection device |
| CN102047471A (en) * | 2008-04-03 | 2011-05-04 | 艾姆伯杰克规划有限公司 | Improvement in or relating to battery systems |
| CN202189860U (en) * | 2011-08-05 | 2012-04-11 | 深圳市沃特玛电池有限公司 | Security structure of power battery pack |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070009787A1 (en) * | 2005-05-12 | 2007-01-11 | Straubel Jeffrey B | Method and apparatus for mounting, cooling, connecting and protecting batteries |
| JP5288863B2 (en) * | 2008-04-08 | 2013-09-11 | 日清工業有限公司 | Battery pack |
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2011
- 2011-08-05 CN CN201110223748.4A patent/CN102916158B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102047471A (en) * | 2008-04-03 | 2011-05-04 | 艾姆伯杰克规划有限公司 | Improvement in or relating to battery systems |
| CN201303013Y (en) * | 2008-09-26 | 2009-09-02 | 富港电子（东莞）有限公司 | Battery module |
| CN201365119Y (en) * | 2009-01-16 | 2009-12-16 | 东莞新能源科技有限公司 | Power battery protection device |
| CN202189860U (en) * | 2011-08-05 | 2012-04-11 | 深圳市沃特玛电池有限公司 | Security structure of power battery pack |
Also Published As
| Publication number | Publication date |
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| CN102916158A (en) | 2013-02-06 |
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Application publication date: 20130206 Assignee: TONGLING OPTIMUMNANO ENERGY CO.,LTD. Assignor: Shenzhen Optimum Battery Co.,Ltd. Contract record no.: 2016440020091 Denomination of invention: Security structure of power battery pack Granted publication date: 20160302 License type: Common License Record date: 20161021 Application publication date: 20130206 Assignee: TANGSHAN OPTIMUMNANO ENERGY CO.,LTD. Assignor: Shenzhen Optimum Battery Co.,Ltd. Contract record no.: 2016440020089 Denomination of invention: Security structure of power battery pack Granted publication date: 20160302 License type: Common License Record date: 20161020 Application publication date: 20130206 Assignee: LINFEN CITY WOTEMA BATTERY CO.,LTD. Assignor: Shenzhen Optimum Battery Co.,Ltd. Contract record no.: 2016440020090 Denomination of invention: Security structure of power battery pack Granted publication date: 20160302 License type: Common License Record date: 20161020 Application publication date: 20130206 Assignee: SHIYAN OPTIMUMNANO ENERGY CO.,LTD. Assignor: Shenzhen Optimum Battery Co.,Ltd. Contract record no.: 2016440020092 Denomination of invention: Security structure of power battery pack Granted publication date: 20160302 License type: Common License Record date: 20161021 |
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