CN201311948Y - Battery pack - Google Patents
Battery pack Download PDFInfo
- Publication number
- CN201311948Y CN201311948Y CNU2008201765903U CN200820176590U CN201311948Y CN 201311948 Y CN201311948 Y CN 201311948Y CN U2008201765903 U CNU2008201765903 U CN U2008201765903U CN 200820176590 U CN200820176590 U CN 200820176590U CN 201311948 Y CN201311948 Y CN 201311948Y
- Authority
- CN
- China
- Prior art keywords
- battery pack
- solder
- pack according
- expanded
- electrode terminals
- 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
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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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- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model provides a battery pack which comprises a plurality of single batteries (1). The single batteries (1) are provided with electrode terminals (2) and are connected in parallel and in series through the electrode terminals (2); the electrode terminals (2) of the two adjacent single batteries (1) are welded together through a solder (3); and a breakage promoting part (4) is arranged between the two electrode terminals (2) of at least a pair of adjacent single batteries (1) and used for promoting the solder (3) to overcome the surface tension to drip down after the solder (3) is melt due to the exposure to heat, thereby breaking a circuit. The battery pack can break the circuit when the short circuit, overcharge and other abnormal circumstances occur, thereby avoiding the further diffusion of heat, preventing the temperature of batteries and lead wires from rising, avoiding the personal injury, and simultaneously prolonging the service life of the batteries.
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 overheat protective 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, the electrode terminal of adjacent two cells welds together by solder, wherein, be provided with short disconnected parts between the electrode terminal of the cell that at least one pair of is adjacent, should be used for after described solder melted by heat, impelling described solder to overcome its surface tension and dripping by short disconnected parts, thereby circuit is disconnected.
Owing to be provided with short disconnected parts between the electrode terminal of at least one pair of adjacent cell of the battery pack that the utility model provides, the parts that should shortly break can impel described solder to overcome its surface tension after described solder melted by heat and drip, so, when battery pack is short-circuited, when abnormal conditions such as overcharging, solder melted by heat between the electrode terminal, short then disconnected parts impel described solder to overcome its surface tension and drip, thereby circuit is disconnected, 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 Facad structure schematic diagram of the battery pack of a kind of execution mode of providing of the utility model;
Fig. 2 is the planar structure schematic diagram of the battery pack of the another kind of execution mode that provides of the utility model;
Fig. 3 is the planar structure schematic diagram of the battery pack of another execution mode of providing of the utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model embodiment 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, the electrode terminal 2 of adjacent two cells 1 welds together by solder 3, wherein, be provided with short disconnected parts 4 between two electrode terminals 2 of at least one pair of adjacent cell 1, should be used for after described solder 3 melted by heat, impelling described solder 3 to overcome its surface tension and dripping by short disconnected parts 4, thereby circuit is disconnected.
Described short disconnected parts 4 can be various structures, as long as can be after solder 3 melted by heat, impel solder 3 to overcome its surface tension and drip and get final product.
As shown in Figure 1, according to a kind of execution mode of the present utility model, described short disconnected parts 4 are a weight, and this weight is by solder 3 and described two electrode terminals, 2 welding.
There is no particular limitation to the shape of weight, and weight can be square, cuboid or taper type as described, and weight is easier to be overcome the surface tension of liquid solder and drop in order to make, thereby circuit is disconnected, preferably, described weight is a taper type, and the big placed face down of weight.
There is no particular limitation to the material of weight, as long as can satisfy the soldering condition, weight can be preferably metal derby for metal derby or ceramic block as described.Metal derby is easier to be overcome the surface tension of liquid solder and drops in order to make, and preferably, described metal derby is the bigger metal derby of density, and metal derby can be copper billet, bloom, aluminium block or iron block as described.
As shown in Figure 2, according to another execution mode of the present utility model, described short disconnected parts 4 are an expanded by heating thing, and this expanded by heating thing contacts with two electrode terminals 2 of described adjacent cell 1.
Described expanded by heating thing need have certain rigidity and expanded by heating preferably, and is made by high temperature resistant, electrically non-conductive material, and the expanded by heating thing can be made by ceramic material or mica as described, and described ceramic material can be Al
2O
3, ZrO
2Or BeO.There is no particular limitation to the shape of described expanded by heating thing, and the expanded by heating thing can be spherical, column or bulk as described.
Described expanded by heating thing can be fixed by variety of way, as with as described in the expanded by heating thing be arranged in the solder 3, fix by the bed knife between described electrode terminal 2 and the solder 3.The location preferably, is respectively arranged with detent 5 on the medial surface of described two electrode terminals 2 for convenience, and described expanded by heating thing is installed in the detent 5.
Described expanded by heating thing can be arranged on two optional positions between the electrode terminal 2, that is to say, promptly can be arranged on the welding position, also can be arranged on non-welding position.In order to prevent the circulation of expanded by heating thing blocking-up solder 3, guarantee can flow down swimmingly after solder 3 melted by heat, preferably, the top of described expanded by heating thing is not provided with solder 3.In Fig. 2 and execution mode shown in Figure 3, solder 3 all is not set in the above and below of expanded by heating thing.
Described expanded by heating thing can be one, also can be for a plurality of, and Fig. 2 has represented the example of an expanded by heating thing, Fig. 3 has then represented the example of two expanded by heating things.In Fig. 3, one of them expanded by heating thing is arranged on the welding position, and another expanded by heating thing then is arranged on non-welding position.
In order to guarantee that solder 3 can drip after fusing, described solder 3 has certain thickness, and this thickness can be 0.3～1 millimeter, is preferably 0.5～0.8 millimeter.
Solder 3 is not had special requirement, and its fusing point can be 100～450 ℃.Described solder can be preferably tin-based solder, because the fusing point of tin is 231.9 ℃ for bismuthino solder, zinc-based solder, tin-based solder etc., when abnormal conditions such as battery pack is short-circuited, overcharges, be easy to reach the fusing point of tin, thereby circuit is disconnected, in addition, the cost of tin-based solder is lower.
Can adopt various method for welding well known in the art to carry out soldering, as high frequency brazing, iron soldering, resistance brazing etc.
The short disconnected parts 4 that provide at the utility model are under the situation of a weight; when abnormal conditions such as battery pack is short-circuited, overcharges; electric current increases suddenly, and the temperature of solder 3 rises rapidly, reaches the fusing point of solder 3; solder 3 fusings; solder 3 overcomes surface tension under the action of gravity of weight, and drips under the self gravitation effect, and weight drops simultaneously; circuit is disconnected, reached the purpose of overtemperature protection.
The short disconnected parts 4 that provide at the utility model are under the situation of an expanded by heating thing; when abnormal conditions such as battery pack is short-circuited, overcharges, electric current increases suddenly, and the temperature of solder 3 rises rapidly; reach the fusing point of solder 3; solder 3 fusings, simultaneously, expanded by heating thing expanded by heating; increased the gap between two electrode terminals; thereby help solder 3 to overcome its surface tension and under the self gravitation effect, drip, reach the purpose of cutout, play the function of overtemperature protection.
In sum, owing to be provided with short disconnected parts between the electrode terminal of at least one pair of adjacent cell of the battery pack that the utility model provides, the parts that should shortly break can impel described solder to overcome its surface tension after described solder melted by heat and drip, so, when battery pack is short-circuited, when abnormal conditions such as overcharging, solder melted by heat between the electrode terminal, short then disconnected parts impel described solder to overcome its surface tension and drip, thereby circuit is disconnected, avoided the further diffusion of heat, stop the rising of battery and conductor temperature, avoided the generation of damage to person, prolonged the useful life of battery self simultaneously.
Claims (12)
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), the electrode terminal (2) of adjacent two cells (1) welds together by solder (3), it is characterized in that, be provided with short disconnected parts (4) between two electrode terminals (2) of at least one pair of adjacent cell (1), should be used for after described solder (3) melted by heat, impelling described solder (3) to overcome its surface tension and dripping by short disconnected parts (4), thereby circuit is disconnected.
2, battery pack according to claim 1 is characterized in that, described short disconnected parts (4) are a weight, and this weight is by solder (3) and described two electrode terminals (2) welding.
3, battery pack according to claim 2 is characterized in that, described weight is a taper type, and the big placed face down of weight.
4, battery pack according to claim 2 is characterized in that, described weight is a metal derby.
5, battery pack according to claim 1 is characterized in that, described short disconnected parts (4) are an expanded by heating thing, and this expanded by heating thing contacts with two electrode terminals (2) of described adjacent cell (1).
6, battery pack according to claim 5 is characterized in that, described expanded by heating thing is made by ceramic material.
7, battery pack according to claim 6 is characterized in that, described ceramic material is Al
2O
3, ZrO
2Or BeO.
8, battery pack according to claim 5 is characterized in that, described expanded by heating thing is arranged in the solder (3).
9, battery pack according to claim 5 is characterized in that, is respectively arranged with detent (5) on the medial surface of described two electrode terminals (2), and described expanded by heating thing is installed in the described detent (5).
10, battery pack according to claim 5 is characterized in that, the top of described expanded by heating thing is not provided with solder (3).
11, battery pack according to claim 1 is characterized in that, the thickness of described solder (3) is 0.5～0.8 millimeter.
12, battery pack according to claim 1 is characterized in that, described solder (3) is a tin-based solder.
Priority Applications (26)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201765903U CN201311948Y (en) | 2008-12-05 | 2008-12-05 | Battery pack |
| US12/342,024 US8193770B2 (en) | 2007-12-25 | 2008-12-22 | Battery system for a vehicle having an over-current/over-temperature protective feature |
| US12/342,023 US20090159354A1 (en) | 2007-12-25 | 2008-12-22 | 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 |
| EP13156533.5A EP2618397B1 (en) | 2007-12-25 | 2008-12-24 | Battery system for a vehicle with severable connections |
| EA201300927A EA201300927A1 (en) | 2007-12-25 | 2008-12-24 | BATTERY DEVICE FOR A VEHICLE WITH SEPARATED 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 |
| PCT/CN2008/073679 WO2009079965A1 (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 |
| KR1020107014218A KR101146662B1 (en) | 2007-12-25 | 2008-12-24 | Battery pack comprising electrochemical storage cells and battery system comprising same |
| EA201300925A EA027352B1 (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 |
| CA2709138A CA2709138C (en) | 2007-12-25 | 2008-12-24 | Construction of electrochemical storage cell with expansion member |
| PCT/CN2008/073690 WO2009082957A1 (en) | 2007-12-25 | 2008-12-24 | Battery system having interconnected battery packs each having multiple electrochemical storage cells |
| JP2010540015A JP5188582B2 (en) | 2007-12-25 | 2008-12-24 | Battery system having interconnected battery packs, each having a plurality of electrochemical accumulators |
| BRPI0819538-2A BRPI0819538A2 (en) | 2007-12-25 | 2008-12-24 | "battery, battery system and electric vehicle" |
| EA201070708A EA022170B1 (en) | 2007-12-25 | 2008-12-24 | Battery system for a vehicle with severable connections |
| EP08864365.5A EP2223367B1 (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 |
| BRPI0819550-1A BRPI0819550B1 (en) | 2007-12-25 | 2008-12-24 | "BATTERY SYSTEM TO STORE ELECTRIC POWER AND SUPPLY ELECTRIC POWER TO A VEHICLE" |
| JP2010540010A JP5566908B2 (en) | 2007-12-25 | 2008-12-24 | Battery system for a vehicle having a separable connection |
| KR1020107014220A KR101205885B1 (en) | 2007-12-25 | 2008-12-24 | Battery system for a vehicle with severable connections |
| JP2013144795A JP5843814B2 (en) | 2007-12-25 | 2013-07-10 | Battery system |
| JP2013144797A JP5703345B2 (en) | 2007-12-25 | 2013-07-10 | Battery system |
| JP2013144796A JP5843815B2 (en) | 2007-12-25 | 2013-07-10 | Battery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201765903U CN201311948Y (en) | 2008-12-05 | 2008-12-05 | Battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201311948Y true CN201311948Y (en) | 2009-09-16 |
Family
ID=41109202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201765903U Expired - Lifetime CN201311948Y (en) | 2007-12-25 | 2008-12-05 | Battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201311948Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105185856A (en) * | 2015-06-29 | 2015-12-23 | 北京天诚同创电气有限公司 | Automatic battery board splitting device and battery board series array |
| CN106953059A (en) * | 2015-10-06 | 2017-07-14 | 三星Sdi株式会社 | Busbar |
| KR101776325B1 (en) | 2011-10-25 | 2017-09-08 | 현대자동차주식회사 | Current interrupt device for high voltage battery of vehicle |
| CN107681218A (en) * | 2016-08-01 | 2018-02-09 | 福特全球技术公司 | Sensor fuse part for array |
| CN109585771A (en) * | 2017-09-29 | 2019-04-05 | 宁德时代新能源科技股份有限公司 | Secondary cell top cap subassembly and secondary cell |
-
2008
- 2008-12-05 CN CNU2008201765903U patent/CN201311948Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101776325B1 (en) | 2011-10-25 | 2017-09-08 | 현대자동차주식회사 | Current interrupt device for high voltage battery of vehicle |
| CN105185856A (en) * | 2015-06-29 | 2015-12-23 | 北京天诚同创电气有限公司 | Automatic battery board splitting device and battery board series array |
| CN105185856B (en) * | 2015-06-29 | 2017-06-09 | 北京天诚同创电气有限公司 | Automatic battery board splitting device and battery board series array |
| 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 |
| CN107681218A (en) * | 2016-08-01 | 2018-02-09 | 福特全球技术公司 | Sensor fuse part for array |
| CN107681218B (en) * | 2016-08-01 | 2022-12-09 | 福特全球技术公司 | Sensor fuse for battery array |
| CN109585771A (en) * | 2017-09-29 | 2019-04-05 | 宁德时代新能源科技股份有限公司 | Secondary cell top cap subassembly and secondary cell |
| CN109585771B (en) * | 2017-09-29 | 2021-06-29 | 宁德时代新能源科技股份有限公司 | Secondary cell top cap subassembly and secondary cell |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090916 |