CN101752601B - Battery pack - Google Patents
Battery pack Download PDFInfo
- Publication number
- CN101752601B CN101752601B CN200810241207A CN200810241207A CN101752601B CN 101752601 B CN101752601 B CN 101752601B CN 200810241207 A CN200810241207 A CN 200810241207A CN 200810241207 A CN200810241207 A CN 200810241207A CN 101752601 B CN101752601 B CN 101752601B
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- electrode terminal
- battery pack
- weak point
- battery
- weak part
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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
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Battery Mounting, Suspending (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention provides a battery pack. The battery pack comprises a plurality of single batteries, wherein the single batteries are provided with electrode terminals and are connected in series or in parallel through the electrode terminals, a weak part is formed on the electrode terminal, and the weak part can be fused to cut off the current flowing through the electrode terminal when the current flowing through the electrode terminal is higher than the predetermined threshold value. When the battery pack are under the abnormal conditions of short circuit, overcharge and the like, the higher current flows through the weak part, and when the current is higher than the predetermined threshold value, the temperature at the weak part is rapidly raised to reach the melting point of the weak part, the weak part is rapidly fused to disconnect the circuit, therefore, the further diffusion of the heat is avoided, the temperature of the battery and the lead wire is prevented from rising, the harm to the human body is avoided, and meanwhile, the service life of the battery is prolonged.
Description
Technical field
The present invention relates to field of batteries, relate in particular to a kind of battery pack.
Background technology
It will be following developing direction that the raising of Along with people's environmental consciousness, electric automobile or PHEV replace existing fuel vehicle.As the core drive energy of electric automobile, it is particularly outstanding that the importance of power battery pack seems, can form power battery pack through a plurality of cells of serial or parallel connection.
CN201051525Y discloses a kind of battery pack; This battery pack comprises a plurality of cells, and said cell has electrode terminal, connects through the electrode terminal serial or parallel connection between said a plurality of cells; Said electrode terminal is plates, and the annexation between the electrode terminal is welding.Because the battery pack of this kind structure is not taked any safety precautions; So when part cell abnormal heating in the battery pack (like short circuit or overcharge); Heat can be through the battery of electrode terminal around passing to, thereby cause the temperature of battery and lead to raise gradually, when temperature up to a certain degree the time; To scald the user of service, and also can shorten the useful life of battery self simultaneously.
Summary of the invention
The purpose of this invention is to provide a kind of battery pack with overheated fuse function.
The invention provides a kind of battery pack; This battery pack comprises a plurality of cells, and said cell has electrode terminal, connects through the electrode terminal serial or parallel connection between said a plurality of cells; Wherein, Be formed with weak point on the said electrode terminal, when said weak point is set to electric current when the said electrode terminal of flowing through greater than predetermined threshold, thereby this weak point can fuse and breaks off the electric current of this electrode terminal of flowing through.When abnormal conditions such as battery pack is short-circuited, overcharges, have bigger electric current through weak point, when electric current during greater than predetermined threshold; Will cause the temperature of weak point to raise rapidly, reach the fusing point of weak point, thus the weak point quick-break; Circuit is broken off, thereby avoided the further diffusion of heat, stoped the rising of battery and conductor temperature; Avoid the generation of damage to person, prolonged the useful life of battery self simultaneously.
Description of drawings
Fig. 1 is the perspective view of the battery pack of a kind of execution mode provided by the invention;
Fig. 2 is the perspective view of the battery pack of another kind of execution mode provided by the invention;
Fig. 3 is the perspective view of the battery pack of another execution mode provided by the invention;
Fig. 4 is the perspective view of the battery pack of another execution mode provided by the invention;
Fig. 5 is a kind of perspective view of execution mode that is provided with the battery pack provided by the invention of the parts of fluxing;
Fig. 6 is a kind of Facad structure sketch map of execution mode that is provided with the battery pack provided by the invention of the parts of fluxing.
Embodiment
Be further described below in conjunction with the accompanying drawing specific embodiments of the invention.
As shown in Figure 1; The battery pack that one embodiment of the present invention provides comprises a plurality of cells 1, and said cell 1 has electrode terminal 2, connects through electrode terminal 2 serial or parallel connections between said a plurality of cells 1; Wherein, Be formed with weak point 3 on the said electrode terminal 2, when said weak point 3 is set to electric current when the said electrode terminal 2 of flowing through greater than predetermined threshold, thereby this weak point 3 can fuse and breaks off the electric current of this electrode terminal 2 of flowing through.
Said weak point 3 is used for when battery pack part cell abnormal heating, circuit being broken off; The maximum current that can allow to pass through according to circuit and the material of electrode terminal are selected the thickness of weak point 3, can be 10～50% of the thickness of electrode terminal 2 bodies like the thickness of said weak point 3.Said predetermined threshold is meant that promptly circuit allows the maximum current that passes through, and the maximum current that circuit allows to pass through is then relevant with the factors such as performance of the structure of battery pack and battery.When abnormal conditions such as being short-circuited, overcharge, the electric current of the said electrode terminal 2 of flowing through can surpass circuit usually and allow the maximum current that passes through, thereby with weak point 3 fusing, to reach the purpose of current cutting protection.
Shape to weak point 3 does not have special qualification, can be circular arc, square, triangle or trapezoidal like the shape of said weak point 3.
Number to weak point 3 does not have special qualification, can be one or two like said weak point 3.Said weak point 3 can be arranged on the optional position of electrode terminal 2.
Can realize being electrically connected through variety of way well known in the art between the electrode terminal 2 of adjacent monomer battery 1, connect or welding like bolt connection, rivet.In order to simplify the structure of battery pack, preferably, the electrode terminal 2 of adjacent monomer battery 1 welds together.
The electrode terminal 2 of said cell 1 can be different shape well known in the art; Like column or sheet; In order to realize connection between the cell 1 and the conveyance capacity that increases cell 1 more easily, preferably, the electrode terminal 2 of said cell 1 is a sheet.Said electrode terminal 2 is drawn by the battery cover board bending, and through once or repeatedly being connected with adjacent electrode terminal 2 after the bending, this bending angle can be for 0～180 degree, and for the ease of processing, preferably, this bending angle is 90 degree.When the electrode terminal 2 of cell 1 was sheet, the connection form between the electrode terminal 2 of adjacent monomer battery 1 can be directly butt joint, overlap joint or flange butt joint.
As shown in Figure 1, when the connection form between the electrode terminal 2 of adjacent monomer battery 1 was directly butt joint, said weak point 3 can be arranged on the formed docking section 4 of butt joint.As shown in Figure 2, when the connection form between the electrode terminal 2 of adjacent monomer battery 1 is overlap joint, preferably on the electrode terminal 2 of adjacent monomer battery 1, respectively be provided with a weak point 3, and two weak points 3 are overlapped.Like Fig. 3 and shown in Figure 4, when the connection form between the electrode terminal 2 of adjacent monomer battery 1 is the flange butt joint, a weak point 3 can respectively be set, and two weak points 3 are overlapped on the electrode terminal 2 of adjacent monomer battery 1; Also a weak point 3 can be set on disconnected of electrode terminal 2.
In order to quicken the fusing of weak point 3, like Fig. 5 and shown in Figure 6, preferably, said weak point 3 is provided with the parts 5 of fluxing.The said parts 5 of fluxing comprise tube 7 and the filler 6 of fluxing that is filled in this tube 7; The said filler 6 of fluxing is strong acid or highly basic class material, and like NaOH, hydrochloric acid, sulfuric acid or nitric acid, said tube 7 can be plastic tube or rubber tube; In order to guarantee the safety under the normal condition; Preferably, the said filler 6 of fluxing is Powdered NaOH, and said tube 7 is a plastic tube.The said parts 5 of fluxing can be fixed on the weak point 3 through variety of way well known in the art; Like welding, bonding or be fastenedly connected; Connect for ease; Preferably, the said parts 5 of fluxing are fixed on the weak point 3 through bonding mode, are connected on the weak point 3 as adopting 201 glue, 502 glue, bi-component glue or melt viscosity.Because electrode terminal is metal by copper, aluminium or nickel and so on; So when the battery pack abnormal heating, high temperature can melt tube 7, thereby chemical reactions take place the weak point 3 of flux filler 6 and electrode terminal 2 in the tube 7; Quickened the fusing of weak point 3; Thereby circuit is promptly broken off, stoped the further transmission of heat, avoided the generation of thermal runaway.
Interconnective two electrode terminals 2 can be positive terminal or negative terminal simultaneously, also can one be positive terminal, another is a negative terminal.
Said cell 1 can be the existing various cells that are suitable for forming battery pack, for example alkaline secondary cell or lithium ion battery.
Can find out that from above description weak point 3 can quick-break when battery pack is overheated, thereby stop the transmission of heat, avoid the generation of pyrolytic damage, prolong the useful life of battery self simultaneously.And the fusing that adds affiliation acceleration weak point 3 of the parts 5 of fluxing fuses it in the shorter time.
Claims (3)
1. battery pack; This battery pack comprises a plurality of cells (1), and said cell (1) has electrode terminal (2), connects through electrode terminal (2) serial or parallel connection between said a plurality of cells (1); It is characterized in that; Be formed with weak point (3) on the said electrode terminal (2), when said weak point (3) is set to electric current when the said electrode terminal (2) of flowing through greater than predetermined threshold, this weak point (3) thus can fuse and break off the electric current of this electrode terminal (2) of flowing through; Said weak point (3) is provided with the parts of fluxing (5); The said parts of fluxing (5) comprise tube (7) and are filled in the filler of fluxing (6) in this tube (7).
2. battery pack according to claim 1 is characterized in that, the said filler of fluxing (6) is Powdered NaOH, and said tube (7) is a plastic tube.
3. battery pack according to claim 1 is characterized in that, the said parts of fluxing (5) are fixed on the weak point (3) through bonding mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810241207A CN101752601B (en) | 2008-12-08 | 2008-12-08 | Battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810241207A CN101752601B (en) | 2008-12-08 | 2008-12-08 | Battery pack |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101752601A CN101752601A (en) | 2010-06-23 |
| CN101752601B true CN101752601B (en) | 2012-09-05 |
Family
ID=42479208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810241207A Active CN101752601B (en) | 2008-12-08 | 2008-12-08 | Battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101752601B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9099732B2 (en) | 2010-06-11 | 2015-08-04 | Samsung Sdi Co., Ltd. | Rechargeable battery having a fuse with an insulating blocking member |
| EP3154107B1 (en) * | 2015-10-06 | 2018-09-12 | Samsung SDI Co., Ltd. | Busbar |
| CN109417134B (en) * | 2016-06-29 | 2021-12-03 | 三洋电机株式会社 | Secondary battery |
| KR102350769B1 (en) * | 2017-03-06 | 2022-01-13 | 삼성에스디아이 주식회사 | Secondary battery |
| US10549640B2 (en) * | 2017-11-09 | 2020-02-04 | Ford Global Technologies, Llc | Mechanically amplified battery cell pressure sensor |
| KR102242249B1 (en) | 2018-02-12 | 2021-04-20 | 주식회사 엘지화학 | Current interrupt device and battery module including the same |
| CN108281602B (en) * | 2018-03-06 | 2024-06-07 | 深圳前海优容科技有限公司 | Battery pack and electric vehicle |
| CN116526086B (en) * | 2023-06-29 | 2023-09-19 | 楚能新能源股份有限公司 | Pole and battery |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1264913A (en) * | 1999-02-26 | 2000-08-30 | 三洋电机株式会社 | Fuse wire and combined battery set with fuse wire |
| CN2473755Y (en) * | 2001-04-18 | 2002-01-23 | 深圳市比亚迪实业有限公司 | Alkaline secondary battery with short circuit protection function and its series group battery |
| EP1780819A1 (en) * | 2005-10-31 | 2007-05-02 | Black & Decker, Inc. | Cell connection straps for battery cells of a battery pack |
| CN201051525Y (en) * | 2007-05-29 | 2008-04-23 | 上海比亚迪有限公司 | Battery group |
| CN201345378Y (en) * | 2008-12-03 | 2009-11-11 | 比亚迪股份有限公司 | Battery pack |
-
2008
- 2008-12-08 CN CN200810241207A patent/CN101752601B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1264913A (en) * | 1999-02-26 | 2000-08-30 | 三洋电机株式会社 | Fuse wire and combined battery set with fuse wire |
| CN2473755Y (en) * | 2001-04-18 | 2002-01-23 | 深圳市比亚迪实业有限公司 | Alkaline secondary battery with short circuit protection function and its series group battery |
| EP1780819A1 (en) * | 2005-10-31 | 2007-05-02 | Black & Decker, Inc. | Cell connection straps for battery cells of a battery pack |
| CN201051525Y (en) * | 2007-05-29 | 2008-04-23 | 上海比亚迪有限公司 | Battery group |
| CN201345378Y (en) * | 2008-12-03 | 2009-11-11 | 比亚迪股份有限公司 | Battery pack |
Non-Patent Citations (2)
| Title |
|---|
| JP特开2005-317323A 2005.11.10 |
| JP特开2007-194035A 2007.08.02 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101752601A (en) | 2010-06-23 |
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| C14 | Grant of patent or utility model | ||
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