CN101752601A - Battery pack - Google Patents
Battery pack Download PDFInfo
- Publication number
- CN101752601A CN101752601A CN200810241207A CN200810241207A CN101752601A CN 101752601 A CN101752601 A CN 101752601A CN 200810241207 A CN200810241207 A CN 200810241207A CN 200810241207 A CN200810241207 A CN 200810241207A CN 101752601 A CN101752601 A CN 101752601A
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- Prior art keywords
- electrode terminal
- battery pack
- weak point
- pack according
- battery
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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
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
Along with the raising of people's environmental consciousness, it will be following developing direction that electric automobile or hybrid vehicle 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 by 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 described cell has electrode terminal, connects by the electrode terminal serial or parallel connection between described a plurality of cells, described 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 (as short circuit or overcharge); battery around heat can pass to by electrode terminal; 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, described cell has electrode terminal, connect by the electrode terminal serial or parallel connection between described a plurality of cell, wherein, be formed with weak point on the described electrode terminal, when described weak point is set to electric current when the described electrode terminal of flowing through greater than predetermined threshold, thereby this weak point can fuse and disconnects 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, thereby weak point quick-break, circuit is disconnected, 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 schematic diagram of execution mode that is provided with the battery pack provided by the invention of the parts of fluxing.
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is further described.
As shown in Figure 1, the battery pack that one embodiment of the present invention provides comprises a plurality of cells 1, described cell 1 has electrode terminal 2, connect by electrode terminal 2 serial or parallel connections between described a plurality of cell 1, wherein, be formed with weak point 3 on the described electrode terminal 2, when described weak point 3 is set to electric current when the described electrode terminal 2 of flowing through greater than predetermined threshold, thereby this weak point 3 can fuse and disconnects the electric current of this electrode terminal 2 of flowing through.
Described weak point 3 is used for when battery pack part cell abnormal heating circuit being disconnected, can allow the material of the maximum current pass through and electrode terminal to select the thickness of weak point 3 according to circuit, the thickness of weak point 3 can be 10～50% of the thickness of electrode terminal 2 bodies as described.Described predetermined threshold is meant that promptly circuit allows the maximum current that passes through, and circuit allows the maximum current that passes through 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 described 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.
There is no particular limitation to the shape of weak point 3, and the shape of weak point 3 can be circular arc, square, triangle or trapezoidal as described.
There is no particular limitation to the number of weak point 3, and weak point 3 can be one or two as described.Described weak point 3 can be arranged on the optional position of electrode terminal 2.
Can realize being electrically connected by variety of way well known in the art between the electrode terminal 2 of adjacent monomer battery 1, connect or welding as 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 described cell 1 can be different shape well known in the art, as 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 described cell 1 is a sheet.Described electrode terminal 2 is drawn by battery cover board bending, is connected with adjacent electrode terminal 2 through bending back once or repeatedly, and this bending angle can be 0～180 to spend, and for the ease of processing, preferably, this bending angle is 90 to spend.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, described 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.As shown in Figure 3 and 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, as shown in Figure 5 and Figure 6, preferably, described weak point 3 is provided with the parts 5 of fluxing.The described parts 5 of fluxing comprise tube 7 and the filler 6 of fluxing that is filled in this tube 7, the described filler 6 of fluxing is strong acid or highly basic class material, as NaOH, hydrochloric acid, sulfuric acid or nitric acid, described tube 7 can be plastic tube or rubber tube, in order to guarantee the safety under the normal condition, preferably, the described filler 6 of fluxing is Powdered NaOH, and described tube 7 is a plastic tube.The described parts 5 of fluxing can be fixed on the weak point 3 by variety of way well known in the art, as welding, bonding or be fastenedly connected, connect for convenience, preferably, the described parts 5 of fluxing are fixed on the weak point 3 by 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 be with tube 7 fusings, thereby chemical reactions take place in 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 disconnected, 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.
Described cell 1 can be the existing various cells that are suitable for forming battery pack, for example alkaline secondary cell or lithium ion battery.
As can be seen from the above description, weak point 3 can quick-break when battery pack is overheated, thereby has stoped the transmission of heat, has avoided the generation of pyrolytic damage, has prolonged 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 (13)
1. battery pack, this battery pack comprises a plurality of cells (1), described cell (1) has electrode terminal (2), connect by electrode terminal (2) serial or parallel connection between described a plurality of cell (1), it is characterized in that, be formed with weak point (3) on the described electrode terminal (2), when described weak point (3) is set to electric current when the described electrode terminal (2) of flowing through greater than predetermined threshold, this weak point (3) thus can fuse and disconnect the electric current of this electrode terminal (2) of flowing through.
2. battery pack according to claim 1 is characterized in that, the thickness of described weak point (3) be electrode terminal (2) body thickness 10～50%.
3. battery pack according to claim 1 is characterized in that, described weak point (3) is one or two.
4. battery pack according to claim 1 is characterized in that, described weak point (3) be shaped as circular arc, square, triangle or trapezoidal.
5. battery pack according to claim 1 is characterized in that, the electrode terminal (2) of described cell (1) is a sheet.
6. battery pack according to claim 5 is characterized in that, the connection form between the electrode terminal (2) of adjacent monomer battery (1) is direct butt joint, overlap joint or flange butt joint.
7. battery pack according to claim 6 is characterized in that, the connection form between the electrode terminal (2) of adjacent monomer battery (1) is directly butt joint, and described weak point (3) is arranged on the formed docking section of butt joint (4).
8. battery pack according to claim 6, it is characterized in that, connection form between the electrode terminal (2) of adjacent monomer battery (1) is overlap joint, respectively be provided with a weak point (3) on the electrode terminal (2) of described adjacent monomer battery (1), and two weak points (3) of described setting are overlapped.
9. battery pack according to claim 6, it is characterized in that, connection form between the electrode terminal (2) of adjacent monomer battery (1) is the flange butt joint, respectively be provided with a weak point (3) on the electrode terminal (2) of described adjacent monomer battery (1), and two weak points (3) of described setting are overlapped.
10. battery pack according to claim 1 is characterized in that, described weak point (3) is provided with the parts of fluxing (5).
11. battery pack according to claim 10 is characterized in that, the described parts of fluxing (5) comprise tube (7) and are filled in the interior filler of fluxing (6) of this tube (7).
12. battery pack according to claim 11 is characterized in that, the described filler of fluxing (6) is Powdered NaOH, and described tube (7) is a plastic tube.
13. battery pack according to claim 11 is characterized in that, the described parts of fluxing (5) are fixed on the weak point (3) by 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 true CN101752601A (en) | 2010-06-23 |
| CN101752601B CN101752601B (en) | 2012-09-05 |
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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) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102280608A (en) * | 2010-06-11 | 2011-12-14 | Sb锂摩托有限公司 | Rechargeable battery |
| CN106953059A (en) * | 2015-10-06 | 2017-07-14 | 三星Sdi株式会社 | Busbar |
| CN108281602A (en) * | 2018-03-06 | 2018-07-13 | 深圳前海优容科技有限公司 | A kind of battery pack and electric vehicle |
| CN109417134A (en) * | 2016-06-29 | 2019-03-01 | 三洋电机株式会社 | Secondary cell |
| CN110383536A (en) * | 2017-03-06 | 2019-10-25 | 三星Sdi株式会社 | Secondary cell |
| JP2020530191A (en) * | 2018-02-12 | 2020-10-15 | エルジー・ケム・リミテッド | Battery module including current breaker and its current breaker |
| CN116526086A (en) * | 2023-06-29 | 2023-08-01 | 楚能新能源股份有限公司 | Pole and battery |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000311575A (en) * | 1999-02-26 | 2000-11-07 | Sanyo Electric Co Ltd | Fuse and fuse built-in pack battery |
| 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 |
| US20070099073A1 (en) * | 2005-10-31 | 2007-05-03 | White Daniel J | 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
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102280608A (en) * | 2010-06-11 | 2011-12-14 | Sb锂摩托有限公司 | Rechargeable battery |
| CN102280608B (en) * | 2010-06-11 | 2015-05-06 | 三星Sdi株式会社 | Rechargeable battery |
| US9099732B2 (en) | 2010-06-11 | 2015-08-04 | Samsung Sdi Co., Ltd. | Rechargeable battery having a fuse with an insulating blocking member |
| CN106953059A (en) * | 2015-10-06 | 2017-07-14 | 三星Sdi株式会社 | Busbar |
| CN106953059B (en) * | 2015-10-06 | 2021-05-04 | 三星Sdi株式会社 | Bus bar |
| CN109417134A (en) * | 2016-06-29 | 2019-03-01 | 三洋电机株式会社 | Secondary cell |
| CN110383536A (en) * | 2017-03-06 | 2019-10-25 | 三星Sdi株式会社 | Secondary cell |
| US11489222B2 (en) | 2017-03-06 | 2022-11-01 | Samsung Sdi Co., Ltd. | Secondary battery |
| JP2020530191A (en) * | 2018-02-12 | 2020-10-15 | エルジー・ケム・リミテッド | Battery module including current breaker and its current breaker |
| US11189892B2 (en) | 2018-02-12 | 2021-11-30 | Lg Chem, Ltd. | Current interrupt device having connection parts with contacting inclined surfaces and battery module including the same |
| JP7090967B2 (en) | 2018-02-12 | 2022-06-27 | エルジー エナジー ソリューション リミテッド | Battery module including current breaker and its current breaker |
| US11881599B2 (en) | 2018-02-12 | 2024-01-23 | Lg Energy Solution, Ltd. | Current interrupt device having connection parts with contacting inclined surfaces and battery module including the same |
| CN108281602A (en) * | 2018-03-06 | 2018-07-13 | 深圳前海优容科技有限公司 | A kind of battery pack and electric vehicle |
| CN116526086A (en) * | 2023-06-29 | 2023-08-01 | 楚能新能源股份有限公司 | Pole and battery |
| CN116526086B (en) * | 2023-06-29 | 2023-09-19 | 楚能新能源股份有限公司 | Pole and battery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101752601B (en) | 2012-09-05 |
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| C14 | Grant of patent or utility model | ||
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