CN202384421U - Tab-bolted lithium ion battery - Google Patents
Tab-bolted lithium ion battery Download PDFInfo
- Publication number
- CN202384421U CN202384421U CN2011203444970U CN201120344497U CN202384421U CN 202384421 U CN202384421 U CN 202384421U CN 2011203444970 U CN2011203444970 U CN 2011203444970U CN 201120344497 U CN201120344497 U CN 201120344497U CN 202384421 U CN202384421 U CN 202384421U
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- CN
- China
- Prior art keywords
- lithium ion
- ion battery
- bolt
- lug
- tab
- 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 discloses a tab-bolted lithium ion battery, which comprises at least two battery cores and a housing. The battery cores are arranged in the aluminum or plastic housing, and are overlapped. A diaphragm is arranged between the two battery cores. A bolting hole is formed in each tab of each battery core. Positive and negative tabs are connected into a whole through bolts and nuts. A gasket is arranged on each bolt between the tabs in a penetration way. Bus-bar electrodes are also arranged between the gaskets on the bolts between the tags in a penetration way. The tab-bolted lithium ion battery has the advantages that the battery cores are easy to assemble; the problems of instability of a welding connection mode for the battery cores and electrodes and complex process of the conventional high-capacity laminated lithium ion battery are solved; the problem of outer-layer tab stress concentration caused by excessive deflection toward one side in the tab connection of the high-capacity laminated lithium ion battery is solved; and moreover, by the bolt connection mode, production efficiency can be remarkably improved, and the service life of the battery core can be prolonged.
Description
Technical field
The utility model relates to a kind of lithium ion battery, is a kind of lug bolt formula lithium ion battery more specifically.
Background technology
At present, the lug connected mode of stack type lithium ion battery adopts ultrasonic bonding or riveted joint usually, and often the number of plies is more for the stack type lithium ion battery lug of larger capacity; Riveted joint, ultrasonic bonding, along with the lifting of capacity, the lamination number of plies is nearly more than hundred layers; This power requirement to supersonic welder is very high, and the Copper Foil above 50 layers is difficult to firm welding, causes the contact internal resistance excessive easily; And there is the risk of rosin joint, influences battery performance; Because the pole piece number of plies of single cored structure is too much, the lug unbalanced stress of ectonexine pole piece is even, has the risk of the lug easy fracture of outer pole piece, and quality can't guarantee that consistency is relatively poor, is unfavorable for its application in the electrokinetic cell field.
Summary of the invention
The technical problem that the utility model will solve is to overcome existing big capacity stack type lithium ion battery electricity core and electrode connection mode instability and the numerous and diverse problem of technology; A kind of lug bolt formula lithium ion battery is provided; Through changing the connected mode of lug; Effective solution is welded, riveted joint is insecure, the big drawback of contact internal resistance, improve production efficiency and product quality.
The utility model solves the technical scheme that its technical problem adopted: a kind of lug bolt formula lithium ion battery, comprise electric core, shell, and electric core places shell, has at least two electric cores to stack, and between the two electric cores barrier film is arranged; The bolt hole is arranged on the lug of each electric core, and anode ear and negative electrode lug link together with bolt and nut respectively, are installed with pad on the bolt between the lug.
Said lithium ion battery is square, and said electric core generally has two to be one group, and the lithium ion battery cell lug can adopt two groups of cell polar ears of single bolt-through mean allocation under situation about not bending, and the nut check realization is connected with the bolt of electrode; Also can adopt 2 bolts to run through two groups of cell polar ears respectively, the mode of nut check realizes being connected with the bolt of electrode.
Also be installed with the bus-bar electrode between the bolt Upper gasket between the said lug, so that electrode is drawn.
Said two lugs bend 90 degree in opposite directions, and corresponding bolt hole is arranged on the bending side, through this bolt hole two lugs are linked together.
The shell of battery can be aluminum hull, box hat or plastic housing.
The beneficial effect of the utility model is; The assembling of electricity core is simple; Existing big capacity stack type lithium ion battery electricity core and electrode welding connecting mode instability and the numerous and diverse problem of technology have been overcome; Solved the problem of too concentrating when big capacity stack type lithium ion battery lug connects, and bolt connecting mode can significantly improve production efficiency, improve the useful life of electric core to the caused outer lug stress of one side deviation.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
Fig. 1 is the electric core face shaping of the utility model embodiment battery;
Fig. 2 is that the utility model embodiment electricity core uses 2 side generalized sections that bolt is connected with electrode respectively;
Fig. 3 is the front schematic view of Fig. 2;
Fig. 4 is that the utility model embodiment electricity core is divided into two groups and bend the range upon range of back of 90 degree and electrode through single only bolted side generalized section.
In the drawings, 1. bus-bar electrode, 2. bolt, 3. nut, 4. barrier film, 5. electrode, 6. bolt, 7. electric core divides into groups one, and 8. electric core divides into groups two.
Embodiment
Embodiment 1: a kind of lug bolt formula lithium ion battery, comprise electric core, shell, and electric core places shell, like Fig. 2, shown in 3, has two electric cores to stack, and between the two electric cores barrier film 4 is arranged; As shown in Figure 1, the bolt hole is arranged on the lug of each electric core, anode ear and negative electrode lug link together with bolt 2 nuts 3 respectively, and are installed with pad on the bolt between the lug 2, also are installed with bus-bar electrode 1 on the bolt 2 between the lug.
Claims (5)
1. a lug bolt formula lithium ion battery comprises electric core, shell, and electric core places shell, it is characterized in that having at least two electric cores to stack, and between the two electric cores barrier film is arranged; The bolt hole is arranged on the lug of each electric core, and anode ear and negative electrode lug link together with bolt and nut respectively, and are installed with pad on the bolt between the lug.
2. a kind of lug bolt formula lithium ion battery as claimed in claim 1 is characterized in that said lithium ion battery is square, and said electric core has two.
3. a kind of lug bolt formula lithium ion battery as claimed in claim 1 is characterized in that also being installed with on the bolt between the said lug bus-bar electrode.
4. a kind of lug bolt formula lithium ion battery as claimed in claim 2 is characterized in that said two lugs bend 90 degree in opposite directions, and corresponding bolt hole is arranged on the bending side, through this bolt hole two lugs is linked together.
5. a kind of lug bolt formula lithium ion battery as claimed in claim 1 is characterized in that said shell can be aluminum hull or box hat or plastic housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203444970U CN202384421U (en) | 2011-09-08 | 2011-09-08 | Tab-bolted lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203444970U CN202384421U (en) | 2011-09-08 | 2011-09-08 | Tab-bolted lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202384421U true CN202384421U (en) | 2012-08-15 |
Family
ID=46632900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203444970U Expired - Lifetime CN202384421U (en) | 2011-09-08 | 2011-09-08 | Tab-bolted lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202384421U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102306736A (en) * | 2011-09-08 | 2012-01-04 | 山东圣阳电源股份有限公司 | Lug bolted lithium ion battery |
-
2011
- 2011-09-08 CN CN2011203444970U patent/CN202384421U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102306736A (en) * | 2011-09-08 | 2012-01-04 | 山东圣阳电源股份有限公司 | Lug bolted lithium ion battery |
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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: 20120815 |
|
| CX01 | Expiry of patent term |