CN2938435Y - Wind lithium-ion battery - Google Patents
Wind lithium-ion battery Download PDFInfo
- Publication number
- CN2938435Y CN2938435Y CNU2006201345109U CN200620134510U CN2938435Y CN 2938435 Y CN2938435 Y CN 2938435Y CN U2006201345109 U CNU2006201345109 U CN U2006201345109U CN 200620134510 U CN200620134510 U CN 200620134510U CN 2938435 Y CN2938435 Y CN 2938435Y
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- CN
- China
- Prior art keywords
- battery
- pole
- lug
- connector
- sheet connector
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- 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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- 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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- Connection Of Batteries Or Terminals (AREA)
Abstract
Disclosed is a convoluted lithium ion battery which comprises a cover board (1), a flake connector (2), a battery housing (3), an electrode core (4), electrolyte, an insulating airproof component (10), and an electrode rod (6); the electrode core (4) and the electrolyte are airproofed in the battery housing (3); the electrode core comprises electrode ears (5), convoluted anode flake and cathode flake, and a septum between the anode flake and cathode flake, the electrode ears (5) are connected with the anode or cathode flake; the electrode rod (6) passes through the cover board (1), the insulating airproof component (10) is provided between the electrode rod (6) and the cover board (1); the flake connector (2) is connected with the electrode rod (6) and the electrode ears (5) respectively, and is vertical to the cover board (1). The convoluted lithium ion battery can avoid the anode or cathode ear (5) touching the cathode or anode housing wall, eliminate the hidden security trouble of battery short circuit, thereby effectively improving the battery security performance.
Description
Technical field
The utility model is about a kind of battery, specifically about a kind of coiled lithium ion battery.
Background technology
Along with science and technology development, as the coiled lithium ion battery in the high energy battery, it is little that it has a volume, energy height, free of contamination advantage and being widely used in the portable type electronic products such as mobile phone, digital camera.
The fail safe of coiled lithium ion battery is a very important characteristic index always, and it is directly connected to user's the person and property safety.Yet causing a major reason of coiled lithium ion battery safety problem is internal short-circuit.The internal structure of coiled lithium ion battery is generally the positive and negative plate of strip and barrier film and is stacked together and forms pole piece through coiling, and positive and negative plate is then derived electric current by the positive and negative lug that is connected with positive and negative plate.
As Figure 1-3, existing coiled lithium ion battery comprises cover plate 1, sheet connector 2, battery container 3, pole piece 4, electrolyte, insulating sealer 10 and pole 6, and pole piece 4, electrolyte are sealed in the battery container 3; Pole piece 4 comprises lug 5 and is wound on together positive plate, negative plate and the barrier film between positive plate and negative plate, and lug 5 is connected with positive plate or negative plate, and pole 6 passes cover plate 1, and insulating sealer 10 is between pole 6 and cover plate 1; Sheet connector 2 is connected with lug 5 with pole 6 respectively.Since in the coiled lithium ion battery structure just/negative electrode lug 5 is positioned in the middle of the pole piece, just/end of negative electrode lug 5 with just/negative current collector is connected, the other end and sheet connector 2 surfaces are connected, sheet connector 2 again with battery cover board 1 on just/negative terminal 6 is connected and just draws/cathodal current.Just/negative electrode lug 5 is when being connected with sheet connector 2, because sheet connector 2 (as shown in Figure 3) surface is parallel to battery cover board 1, therefore battery cover board 1 must be in parastate (as shown in Figure 1) with pole piece 4 and lug 5, after pole piece 4 after connecting is inserted in the battery case 3, again cover plate 1 is embedded battery container 3.Owing to must turnover 90 spend when cover plate 1 embeds battery container 3, just/negative electrode lug 5 the bending 90 the degree after, will inevitably be crooked greater than the height that turnover back shroud 1 embeds between battery container 3 back shrouds 1 and the pole piece 4 because of length, run into shell wall when the bending in order to prevent long lug 5 with negative/positive polarity, existing method is by folding lug technology, just make/negative electrode lug is serpentine after cover plate 1 embeds housing 3, and bending direction is the thickness direction of battery." S " type lug has certain elasticity, can resist certain vibration (as shown in Figure 2) when battery is subjected to the external force effect or falls.But because just/direction of negative electrode lug 5 bendings is towards the battery shell wall, this is easy to make lug 5 excessive because of certain bending of long or S shape, just cause/negative electrode lug 5 is too near the battery shell wall, under the effect of external force (as extruding or vibration), just can make/crooked position of negative electrode lug 5 is with the battery shell wall contact of negative/positive polarity, cause the short circuit of battery positive and negative electrode, produce serious safety problem.
The utility model content
The purpose of this utility model is to overcome in the existing coiled lithium ion battery, just/negative electrode lug is easy to cause the potential safety hazard shortcoming of positive and negative electrode short circuit with negative/positive polarity housing contacts, a kind of coiled lithium ion battery is provided, this coiled lithium ion battery just/negative electrode lug not can with housing contacts, cause battery to be short-circuited.
Battery of the present utility model comprises cover plate 1, sheet connector 2, battery container 3, pole piece 4, electrolyte, insulating sealer 10 and pole 6, and pole piece 4, electrolyte are sealed in the battery container 3; Pole piece 4 comprises lug 5 and positive plate, negative plate and the barrier film between positive plate and negative plate of reeling, and lug 5 is connected with positive plate or negative plate; Pole 6 passes cover plate 1, and insulating sealer 10 is between pole 6 and cover plate 1; Sheet connector 2 is connected with lug 5 with pole 6 respectively, and sheet connector 2 is perpendicular to cover plate 1.
The coiled lithium ion battery that the utility model provides, just/length of negative electrode lug 5 can shorten than existing method of attachment, and do not need bending, therefore just/negative electrode lug 5 can not contact with battery container 3, just can eliminate/negative electrode lug comes in contact phenomenon with negative/positive polarity shell wall, avoid the battery potential safety hazard that is short-circuited, thereby effectively improve the security performance of battery.
Description of drawings
Fig. 1: the battery pole ear of prior art and cover plate and connector connection diagram;
Fig. 2; Prior art has the battery pack assembling structure generalized section of hidden danger;
Fig. 3: the connector schematic perspective view of prior art;
Fig. 4: battery pack assembling structure generalized section of the present utility model;
Fig. 5: first kind of execution mode schematic perspective view of connector of the present utility model;
Fig. 6: second kind of execution mode schematic perspective view of connector of the present utility model.
Embodiment
Below in conjunction with accompanying drawing coiled lithium ion battery of the present utility model is elaborated.
As shown in Figure 4, battery of the present utility model comprises cover plate 1, sheet connector 2, battery container 3, pole piece 4, electrolyte, insulating sealer 10 and pole 6, and pole piece 4, electrolyte are sealed in the battery container 3; Pole piece 4 comprises lug 5 and positive plate, negative plate and the barrier film between positive plate and negative plate of reeling, and lug 5 is connected with positive plate or negative plate; Pole 6 passes cover plate 1, and insulating sealer 10 is between pole 6 and cover plate 1; Sheet connector 2 is connected with lug 5 with pole 6 respectively, and sheet connector 2 is perpendicular to cover plate 1.
As shown in Figure 5, described sheet connector 2 is an arbitrary shape, as square, rectangle, ellipse etc., is preferably rectangle.The edge of sheet connector 2 is fluted 7, and pole 6 is positioned at groove 7 and is connected with 2 spot welding of sheet connector, just/and negative electrode lug 5 is fitted with the vertical surface of sheet connector 2 and spot welding is connected.
As shown in Figure 6, more firm for sheet connector 2 is connected with pole 6, more under the preferable case, the battery that the utility model provides also comprises brace 8, and brace 8 is connected with sheet connector 2 and is orthogonal, and through hole 9 is arranged on the brace 8; Pole 6 is positioned at through hole 9 and is connected with brace 8, and brace 8 surfaces are parallel with cover plate 1, and lug 5 is fitted with the vertical surface of sheet connector 2 and is connected.
Described brace 8 is an arbitrary shape, as square, rectangle, ellipse etc., is preferably rectangle.
Under the preferable case, brace (8) and sheet connector (2) are integral piece.The employing of integral piece can make brace (8) more firm with being connected of sheet connector (2), and makes the electric conductivity of brace (8) and sheet connector (2) better.Such integral piece can adopt conventional method such as casting to form.
Because sheet brace 2 is perpendicular to cover plate 1 plane, from pole piece 4, draw just/negative electrode lug 5 is in the parallel plane position with sheet brace 2, therefore sheet brace 2 is with after lug 5 spot welding are connected, when pole piece 4 is inserted in battery case 3 and embeds battery cover board 1, battery cover board 1 does not need turnover, just/length of negative electrode lug 5 can shorten than existing method of attachment, do not need bending, directly enter battery container 3 (as shown in Figure 4) in mode during sheath body perpendicular to pole piece 4, just eliminate/negative electrode lug 5 touches possibility of shell wall, just stopping/negative electrode lug 5 with bear/the positive polarity shell wall contacts the potential safety hazard that is short-circuited.
The sheet connector 2 of the utility model coiled lithium ion battery is fit to be connected with various coiled lithium ion battery lugs, be applicable to anode ear for the coiled lithium ion battery of steel shell to be connected, be applicable to negative electrode lug for the coiled lithium ion battery of aluminium shell to be connected.
Coiled lithium ion battery with aluminium shell is embodiment below, and coiled lithium ion battery of the present utility model is described further.
[embodiment 1]
1000 of coiled lithium ion batteries that prepared 043450 model, connector 2 and pole 6 and negative electrode lug 5 connected modes as shown in Figure 4, wherein, connector 2 is a connector shown in Figure 5, connector all adopts conventional spot welding to be connected with pole 6 and negative electrode lug 5, and the spot welding time is 1 second.100 batteries of picked at random carry out the drop test of 1.5 meters drops, and every battery circulation is fallen 100 times, detects negative electrode lug 5 with X-TV then and touches the shell situation.
[embodiment 2]
1000 of coiled lithium ion batteries that prepared 043450 model, connector 2 and pole 6 and negative electrode lug 5 connected modes as shown in Figure 4, wherein, connector 2 is a connector shown in Figure 6, connector all adopts conventional spot welding to be connected with pole 6 and negative electrode lug 5, and the spot welding time is 1 second.100 batteries of picked at random carry out the drop test of 1.5 meters drops, and every battery circulation is fallen 100 times, detects negative electrode lug 5 with X-TV then and touches the shell situation.
[Comparative Examples 1]
1000 of coiled lithium ion batteries that prepared 043450 model, connector 2 and pole 6 and negative electrode lug 5 connected modes as shown in Figure 1, wherein, connector 2 is a connector shown in Figure 3, connector all adopts conventional spot welding to be connected with pole 6 and negative electrode lug 5, and the spot welding time is 1 second.100 batteries of picked at random carry out the drop test of 1.5 meters drops, and every battery circulation is fallen 100 times, detects negative electrode lug 5 with X-TV then and touches the shell situation.
1.5 rice drop drop test method: the situation of falling of battery in the simulation use, from 1.5 meters of height, face down with each of shell respectively and freely fall, six direction falls to once circulation, falls 100 circulations.
X-TV detects: utilize X-TV to have an X-rayed and detect the lug shape, the negative electrode lug of battery touches the shell situation behind the record drop test.
Table 1 carries out the shell rate of the touching contrast of drop test for embodiment battery and Comparative Examples battery:
| 1.5 rice drop drop test sample total: 100 (propping up) | Touch hull number (propping up) after falling |
| Embodiment 1 | 0 |
| |
0 |
| Comparative Examples | 6 |
By the data in the table 1 as can be seen, in drop test, all identical at other assembly, connector all adopts identical spot welding to be connected with pole 6 and negative electrode lug 5, under the spot welding time situation too, the shell rate of touching of the coiled lithium ion battery that the utility model provides has been eliminated negative electrode lug substantially and has been contacted the potential safety hazard that is short-circuited with the positive polarity shell wall well below Comparative Examples.The coiled lithium ion battery that the utility model provides, when the same size battery of spot welding, the needed time of spot welding is same as the prior art substantially, can not reduce production efficiency.In addition, the utility model coiled lithium ion battery has shortened lug length, has saved ear pole material, has reduced production cost.
Claims (4)
1, a kind of coiled lithium ion battery, this battery comprise cover plate (1), sheet connector (2), battery container (3), pole piece (4), electrolyte, insulating sealer (10) and pole (6), and pole piece (4), electrolyte are sealed in the battery container (3); Pole piece (4) comprises lug (5) and positive plate, negative plate and the barrier film between positive plate and negative plate of reeling, and lug (5) is connected with positive plate or negative plate; Pole (6) passes cover plate (1), and insulating sealer (10) is positioned between pole (6) and the cover plate (1); Sheet connector (2) is connected with lug (5) with pole (6) respectively, it is characterized in that, sheet connector (2) is perpendicular to cover plate (1).
2, battery according to claim 1 is characterized in that, the edge of sheet connector (2) fluted (7), pole (6) is positioned at groove (7) and is connected with sheet connector (2), and lug (5) is fitted with the vertical surface of sheet connector (2) and is connected.
3, battery according to claim 1 is characterized in that, this battery also comprises brace (8), and brace (8) is connected with sheet connector (2) and is orthogonal, and through hole (9) is arranged on the brace (8); Pole (6) is positioned at through hole (9) and is connected with brace (8), and brace (8) surface is parallel with cover plate (1), and lug (5) is fitted with the vertical surface of sheet connector (2) and is connected.
4, battery according to claim 3 is characterized in that, brace (8) and sheet connector (2) are integral piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201345109U CN2938435Y (en) | 2006-08-14 | 2006-08-14 | Wind lithium-ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201345109U CN2938435Y (en) | 2006-08-14 | 2006-08-14 | Wind lithium-ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2938435Y true CN2938435Y (en) | 2007-08-22 |
Family
ID=38362463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201345109U Expired - Lifetime CN2938435Y (en) | 2006-08-14 | 2006-08-14 | Wind lithium-ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2938435Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102299268A (en) * | 2010-06-23 | 2011-12-28 | 深圳市比克电池有限公司 | Lithium ion battery cover board and battery |
| CN102956853A (en) * | 2012-10-26 | 2013-03-06 | 合肥恒能新能源科技有限公司 | Lithium ion battery |
| CN108701856A (en) * | 2016-03-17 | 2018-10-23 | 日立汽车***株式会社 | Secondary cell |
| CN110391480A (en) * | 2019-08-12 | 2019-10-29 | 银隆新能源股份有限公司 | A kind of cylindrical cell |
-
2006
- 2006-08-14 CN CNU2006201345109U patent/CN2938435Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102299268A (en) * | 2010-06-23 | 2011-12-28 | 深圳市比克电池有限公司 | Lithium ion battery cover board and battery |
| CN102956853A (en) * | 2012-10-26 | 2013-03-06 | 合肥恒能新能源科技有限公司 | Lithium ion battery |
| CN102956853B (en) * | 2012-10-26 | 2015-05-13 | 合肥恒能新能源科技有限公司 | Lithium ion battery |
| CN108701856A (en) * | 2016-03-17 | 2018-10-23 | 日立汽车***株式会社 | Secondary cell |
| CN108701856B (en) * | 2016-03-17 | 2021-07-20 | 日本汽车能源株式会社 | Secondary battery |
| CN110391480A (en) * | 2019-08-12 | 2019-10-29 | 银隆新能源股份有限公司 | A kind of cylindrical 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 |
Granted publication date: 20070822 |
|
| EXPY | Termination of patent right or utility model |