CN201345378Y - Battery pack - Google Patents
Battery pack Download PDFInfo
- Publication number
- CN201345378Y CN201345378Y CNU2008201805417U CN200820180541U CN201345378Y CN 201345378 Y CN201345378 Y CN 201345378Y CN U2008201805417 U CNU2008201805417 U CN U2008201805417U CN 200820180541 U CN200820180541 U CN 200820180541U CN 201345378 Y CN201345378 Y CN 201345378Y
- Authority
- CN
- China
- Prior art keywords
- electrode terminal
- battery pack
- weak point
- pack according
- battery
- 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.)
- Expired - Lifetime
Links
Images
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
-
- 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
Landscapes
- Connection Of Batteries Or Terminals (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The utility model provides a battery pack which comprises a plurality of single cells, wherein, the single cells are provided with electrode terminals and are connected in series or in parallel through the electrode terminals, a weak part is formed on each 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 various 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 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 utility model relates to field of batteries, relates 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.
The utility model content
The purpose of this utility model provides a kind of battery pack with overheated fuse function.
The utility model 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 of providing of the utility model;
Fig. 2 is the perspective view of the battery pack of the another kind of execution mode that provides of the utility model;
Fig. 3 is the perspective view of the battery pack of another execution mode of providing of the utility model;
Fig. 4 is the perspective view of the battery pack of another execution mode of providing of the utility model;
Fig. 5 is the perspective view that is provided with a kind of execution mode of the battery pack that the utility model of the parts of fluxing provides;
Fig. 6 is the Facad structure schematic diagram that is provided with a kind of execution mode of the battery pack that the utility model of the parts of fluxing provides.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is further described.
As shown in Figure 1, the battery pack that a kind of execution mode of the utility model 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, a kind of 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 (26)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201805417U CN201345378Y (en) | 2008-12-03 | 2008-12-03 | Battery pack |
| US12/342,023 US20090159354A1 (en) | 2007-12-25 | 2008-12-22 | Battery system having interconnected battery packs each having multiple electrochemical storage cells |
| US12/342,024 US8193770B2 (en) | 2007-12-25 | 2008-12-22 | Battery system for a vehicle having an over-current/over-temperature protective feature |
| EP08864365.5A EP2223367B1 (en) | 2007-12-25 | 2008-12-24 | Battery system for a vehicle with severable connections |
| EA201300925A EA027352B1 (en) | 2007-12-25 | 2008-12-24 | Battery system for a vehicle with severable connections |
| KR1020107014220A KR101205885B1 (en) | 2007-12-25 | 2008-12-24 | Battery system for a vehicle with severable connections |
| EP20130156532 EP2618396A1 (en) | 2007-12-25 | 2008-12-24 | Battery system for a vehicle with severable connections |
| EP08867970A EP2210297A4 (en) | 2007-12-25 | 2008-12-24 | Battery system having interconnected battery packs each having multiple electrochemical storage cells |
| EP20130156531 EP2618403A1 (en) | 2007-12-25 | 2008-12-24 | Battery system for a vehicle with severable connections |
| BRPI0819550-1A BRPI0819550B1 (en) | 2007-12-25 | 2008-12-24 | "BATTERY SYSTEM TO STORE ELECTRIC POWER AND SUPPLY ELECTRIC POWER TO A VEHICLE" |
| CA2709138A CA2709138C (en) | 2007-12-25 | 2008-12-24 | Construction of electrochemical storage cell with expansion member |
| BRPI0819538-2A BRPI0819538A2 (en) | 2007-12-25 | 2008-12-24 | "battery, battery system and electric vehicle" |
| JP2010540015A JP5188582B2 (en) | 2007-12-25 | 2008-12-24 | Battery system having interconnected battery packs, each having a plurality of electrochemical accumulators |
| KR1020107014218A KR101146662B1 (en) | 2007-12-25 | 2008-12-24 | Battery pack comprising electrochemical storage cells and battery system comprising same |
| PCT/CN2008/073690 WO2009082957A1 (en) | 2007-12-25 | 2008-12-24 | Battery system having interconnected battery packs each having multiple electrochemical storage cells |
| JP2010540010A JP5566908B2 (en) | 2007-12-25 | 2008-12-24 | Battery system for a vehicle having a separable connection |
| EA201070708A EA022170B1 (en) | 2007-12-25 | 2008-12-24 | Battery system for a vehicle with severable connections |
| EA201300926A EA027289B1 (en) | 2007-12-25 | 2008-12-24 | Battery system for a vehicle with severable connections |
| EA201070717A EA201070717A1 (en) | 2007-12-25 | 2008-12-24 | BATTERY DEVICE WITH MUTUALLY CONNECTED BATTERY BATTERIES, EACH OF WHICH HAS A MANY ELECTROCHEMICAL BATTERY ELEMENTS |
| EA201300927A EA201300927A1 (en) | 2007-12-25 | 2008-12-24 | BATTERY DEVICE FOR A VEHICLE WITH SEPARATED CONNECTIONS |
| EP13156533.5A EP2618397B1 (en) | 2007-12-25 | 2008-12-24 | Battery system for a vehicle with severable connections |
| CA2709114A CA2709114C (en) | 2007-12-25 | 2008-12-24 | Battery system for a vehicle with severable connections |
| PCT/CN2008/073679 WO2009079965A1 (en) | 2007-12-25 | 2008-12-24 | Battery system for a vehicle with severable connections |
| JP2013144796A JP5843815B2 (en) | 2007-12-25 | 2013-07-10 | Battery system |
| JP2013144795A JP5843814B2 (en) | 2007-12-25 | 2013-07-10 | Battery system |
| JP2013144797A JP5703345B2 (en) | 2007-12-25 | 2013-07-10 | Battery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201805417U CN201345378Y (en) | 2008-12-03 | 2008-12-03 | Battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201345378Y true CN201345378Y (en) | 2009-11-11 |
Family
ID=41276963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201805417U Expired - Lifetime CN201345378Y (en) | 2007-12-25 | 2008-12-03 | Battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201345378Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102610778A (en) * | 2011-01-24 | 2012-07-25 | 刘吉平 | Safe protection device for battery pack |
| CN101752601B (en) * | 2008-12-08 | 2012-09-05 | 比亚迪股份有限公司 | Battery pack |
| CN106953059A (en) * | 2015-10-06 | 2017-07-14 | 三星Sdi株式会社 | Busbar |
| CN109037569A (en) * | 2018-07-26 | 2018-12-18 | 东莞市中质电子科技有限公司 | A kind of new energy battery modules electric connection structure |
| CN111742378A (en) * | 2018-02-28 | 2020-10-02 | 宁波吉利汽车研究开发有限公司 | Cable with a protective layer |
-
2008
- 2008-12-03 CN CNU2008201805417U patent/CN201345378Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101752601B (en) * | 2008-12-08 | 2012-09-05 | 比亚迪股份有限公司 | Battery pack |
| CN102610778A (en) * | 2011-01-24 | 2012-07-25 | 刘吉平 | Safe protection device for battery pack |
| 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 |
| CN111742378A (en) * | 2018-02-28 | 2020-10-02 | 宁波吉利汽车研究开发有限公司 | Cable with a protective layer |
| US11915840B2 (en) | 2018-02-28 | 2024-02-27 | Ningbo Geely Automobile Research & Dev. Co., Ltd. | Cable |
| CN109037569A (en) * | 2018-07-26 | 2018-12-18 | 东莞市中质电子科技有限公司 | A kind of new energy battery modules electric connection structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6270123B2 (en) | Battery module and bus bar applied to battery module | |
| CN101752601B (en) | Battery pack | |
| JP6292407B2 (en) | Soldering connector, battery module including the same, and battery pack | |
| JP5958841B2 (en) | Secondary battery component and method for manufacturing the same, and secondary battery and multi-battery system manufactured using the component | |
| US20110117408A1 (en) | Battery Assembly | |
| US10601018B2 (en) | Electrode lead for a secondary battery, a pouch type secondary battery and a battery module comprising the same | |
| CN103650209A (en) | Battery pack and connecting bar applied to same | |
| JP5930047B2 (en) | Secondary battery component, method of manufacturing the same, secondary battery manufactured using the component, and assembled secondary battery device | |
| CN201345378Y (en) | Battery pack | |
| CN106711550A (en) | Self-heating battery and terminal equipment | |
| CN214280158U (en) | Switching piece, secondary battery and battery module | |
| CN112787047A (en) | Switching piece, secondary battery and battery module | |
| JP6520958B2 (en) | Power storage device | |
| CN201311948Y (en) | Battery pack | |
| JP2023503310A (en) | HV bus bar made of dissimilar metals and manufacturing method thereof | |
| KR20210050255A (en) | Busbar Having Dissimilar Metals and Manufacturing Method Thereof | |
| KR101302430B1 (en) | Secondary battery including fuse-inserted electrode lead | |
| CN114830429B (en) | Electrode lead made of dissimilar metal, method of manufacturing the same, and battery module including the same | |
| CN209860048U (en) | Battery module | |
| KR101302077B1 (en) | Secondary battery including fuse-inserted electrode lead | |
| KR101641621B1 (en) | Secondary electric cell and battery pack with enhanced safety | |
| CN101752599A (en) | Battery pack | |
| JP2001006654A (en) | Lithium secondary battery | |
| CN219717206U (en) | Connector and secondary battery | |
| CN219801207U (en) | Square lithium cell connects PACK device in parallel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20091111 Effective date of abandoning: 20081203 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20091111 Effective date of abandoning: 20081203 |