CN201601187U - Lithium ion battery - Google Patents
Lithium ion battery Download PDFInfo
- Publication number
- CN201601187U CN201601187U CN2009202622511U CN200920262251U CN201601187U CN 201601187 U CN201601187 U CN 201601187U CN 2009202622511 U CN2009202622511 U CN 2009202622511U CN 200920262251 U CN200920262251 U CN 200920262251U CN 201601187 U CN201601187 U CN 201601187U
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- China
- Prior art keywords
- battery
- rivet
- plate
- cover plate
- negative
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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 - Fee Related
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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)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The utility model provides a lithium ion battery, which comprises a cover plate, a battery casing, a pole core, electrolyte and two rivets. The pole core and the electrolyte are sealed inside the battery casing and the cover plate, the pole core comprises a positive plate, a negative plate and a diaphragm located between the positive plate and the negative plate, the positive plate and the negative plate are respectively provided with a positive lug and a negative lug, the cover plate is provided with two through holes, the two rivets penetrate through the two through holes, the edge of each through hole is provided with a boss, two sides of each through hole are respectively provided with an annular upper sealing part and an annular lower sealing part, the cover plate is riveted by aid of the rivets sequentially penetrating through the upper sealing parts, the through holes and the lower sealing parts, and the two rivets are respectively connected with the positive lug and the negative lug. The lithium ion battery has the advantages that the lithium ion battery not only can be charged and discharged in high current, but also has fine sealing property.
Description
Technical field
The utility model relates to a kind of lithium ion battery, relates in particular to a kind of lithium ion battery of good airproof performance.
Background technology
Lithium ion battery is the storage and the medium that discharges as the electric energy exchange with lithium ion.Lithium ion battery has high-energy-density, in light weight, low internal resistance, high cell voltage, cycle-index is many, self-discharge rate is low, be difficult for reaching and charge fully and characteristic such as the circuit that needs protection.And compare with Ni-MH battery, lead-acid battery with NI-G, lithium ion battery high energy density, more cycle-index are the main causes of showing one's talent with lower self-discharge rate.Be widely used at present in the products such as back-up source, electric tool, electric bicycle, electric automobile.
The positive and negative electrode of battery is drawn and is normally connected by screw or the spot welding connection in the prior art, because being connected, screw cause electrode interior loosening when tightening easily, also can cause internal short-circuit of battery and cause danger, and make the sealing of cover plate good inadequately, and spot welding connects connecting the requirement harshness of material and thickness, all can influence the overcurrent capability of battery, another aspect, lithium ion battery all can not well pass through high current charge-discharge, such as the 200A electric current owing to reasons such as volume are little; Temperature sharply raises during big electric current, burns barrier film, causes potential safety hazards such as internal short-circuit of battery.
Summary of the invention
Technical problem to be solved in the utility model is at the sealing of battery in the prior art and by the relatively poor defective of the ability of big electric current, and a kind of lithium ion battery that can have the high current charge-discharge of good sealing property and energy safety simultaneously is provided.
The technical scheme that its technical problem that solves the utility model adopts provides a kind of lithium ion battery, it comprise cover plate, battery container and be sealed in battery container and cover plate in pole piece and electrolyte; Pole piece comprises positive plate, negative plate and the barrier film between positive plate and negative plate, is respectively arranged with positive pole ear and negative lug on positive plate and the negative plate; Also comprise two rivets, described cover plate is provided with two through holes that are used to pass described rivet, and the edge of each through hole is provided with boss; The both sides of each through hole are respectively arranged with the last seal and the lower seal of ring-type, and described cover plate passes seal, through hole successively, reaches the lower seal riveted joint by rivet, and two rivets link to each other with positive pole ear and negative lug respectively.In above-mentioned lithium ion battery, also comprise the pad that is positioned at the lower seal below, pad and lug are one by rivet.
In above-mentioned lithium ion battery, also comprise the pad that is positioned at the lower seal below, pad and lug are one by rivet.
In above-mentioned lithium ion battery, described rivet is cross rivet, and a rivet end and load outwardly is electrically connected.
In above-mentioned lithium ion battery, the rivet that the rivet that links to each other with positive pole ear is aluminum rivet, link to each other with negative lug is the copper rivet.
In above-mentioned lithium ion battery, described boss is positioned at the edge of through hole one end, and is distributed with the zigzag projection on the boss.
In above-mentioned lithium ion battery, be provided with first groove in the last seal, described projection embeds in first groove of described upward seal by riveted joint.
In above-mentioned lithium ion battery, described positive pole ear and negative lug are two-layer or multilayer.
In above-mentioned lithium ion battery, a side of described cover plate is provided with second groove and is arranged at the interior explosion-protection equipment of second groove.
In above-mentioned lithium ion battery, described explosion-protection equipment comprises successively the sealing ring that connects, burst disk, and goes up cap.
In above-mentioned lithium ion battery, described burst disk is provided with indentation.
The lithium ion battery that the utility model provides, on its cover plate boss is set, and the upper-lower seal part is set in both sides, adopt cross rivet with cover plate and lug riveted joint simultaneously, make things convenient for the connection of multilayer lug, and the area that lug makes Battery Pole Core and rivet and load be communicated with is big, internal resistance is little, riveted joint simultaneously makes it can avoid spot welding to being connected the harsh requirement of material and thickness, thereby makes it can realize high current charge-discharge.
Description of drawings
Fig. 1 is the structural representation of battery among the utility model one embodiment;
Fig. 2 is the part exploded view among Fig. 1;
Fig. 3 is the profile after the utility model one embodiment cover plate and the rivet combination;
Fig. 4 is a longitudinal sectional view of going up seal among the utility model one embodiment.
Embodiment
Clearer for technical problem, technical scheme and beneficial effect that the utility model is solved, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
To shown in Figure 4, Fig. 1 is the structural representation of battery among the utility model one embodiment referring to Fig. 1, and Fig. 2 is the exploded view of the first half among Fig. 1, and Fig. 3 is the profile after an example cover plate 1 makes up with rivet 5.The battery that the utility model provides comprises cover plate 1, battery container 2, pole piece 7, electrolyte, two rivets 5, goes up seal 3, and lower seal 4.Pole piece 7 is sealed in battery container 2 and the cover plate 1 with electrolyte, and pole piece 7 comprises positive plate, negative plate and the barrier film between positive plate and negative plate, is respectively arranged with positive pole ear 81 and negative lug 82 on positive plate and the negative plate.Cover plate 1 is provided with two through holes 12 that are used to pass rivet, and the edge that on the cover board is positioned at an end of each through hole 12 is provided with boss 12; And the both sides of each through hole 12 are respectively arranged with the last seal 3 and the lower seal 4 of ring-type, and rivet 5 passes seal 3, through hole 12 successively, reaches lower seal 4 and lug riveted and fixed.Pad is positioned at the lower seal below, and it makes cover plate 1 and lug riveted joint more stable.
In embodiment of the present utility model, rivet 5 is two, and one links to each other with positive pole ear 81, realizes that the positive plate of battery is electrically connected with extraneous, and one links to each other with negative lug 82, and the negative plate of realization battery is electrically connected with the external world.Preferably, rivet 5 is a cross rivet 5, be that a end that rivet 5 passes cover plate 1 contacts with lug and is electrically connected, the other end of rivet 5, be that its end outwardly stretches out with load and links to each other, preferably, the rivet that links to each other with positive pole ear is an aluminum rivet, the rivet that links to each other with negative lug is the copper rivet, and rivet 5 needs the spot welding mode to connect in the prior art, and spot welding has certain restriction to the material and the thickness of drawing band, and spot welding can not be passed through big electric current, so the rivet 5 that the utility model adopts can be avoided the requirement of spot welding to material and thickness, and internal resistance is little, and lug is by collector copper, aluminium foil is drawn, changed that the lug point is welded in collector copper in the prior art, on the aluminium foil, have better conductivity like this, can discharging and recharging by big electric current.
Another aspect, a side of cover plate 1 are provided with second groove 13 and are arranged at explosion-protection equipment in second groove 13.Explosion-protection equipment comprises from bottom to up the sealing ring 11 that connects successively, burst disk 10, and goes up cap 9.Burst disk 10 is provided with indentation, and sealing ring 11 employing O RunddichtringOs, and connected mode is a laser welding, thereby makes certain explosion-proof ability that the utlity model has.
In sum, the utility model battery of providing improved greatly sealing, can discharging and recharging and have an explosion-proof preferably ability by big electric current.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection range of the present utility model.
Claims (10)
1. lithium ion battery, comprise cover plate, battery container and be sealed in battery container and cover plate in pole piece and electrolyte;
Pole piece comprises positive plate, negative plate and the barrier film between positive plate and negative plate, is respectively arranged with positive pole ear and negative lug on positive plate and the negative plate;
It is characterized in that also comprise two rivets, described cover plate is provided with two through holes that are used to pass described rivet, the edge of each through hole is provided with boss;
The both sides of each through hole are respectively arranged with the last seal and the lower seal of ring-type, and described cover plate passes seal, through hole successively, reaches the lower seal riveted joint by rivet, and two rivets link to each other with positive pole ear and negative lug respectively.
2. battery as claimed in claim 1 is characterized in that, also comprises the pad that is positioned at the lower seal below, and pad and lug are one by rivet.
3. battery as claimed in claim 1 is characterized in that, described rivet is cross rivet, and a rivet end and load outwardly is electrically connected.
4. battery as claimed in claim 1 is characterized in that, the rivet that the rivet that links to each other with positive pole ear is aluminum rivet, link to each other with negative lug is the copper rivet.
5. battery as claimed in claim 1 is characterized in that described boss is positioned at the edge of through hole one end, and is distributed with the zigzag projection on the boss.
6. battery as claimed in claim 5 is characterized in that, described going up in the seal is provided with first groove, and described projection embeds in first groove of described upward seal by riveted joint.
7. battery as claimed in claim 1 is characterized in that described positive pole ear and negative lug are two-layer or multilayer.
8. battery as claimed in claim 1 is characterized in that, a side of described cover plate is provided with second groove and is arranged at the interior explosion-protection equipment of second groove.
9. battery as claimed in claim 8 is characterized in that, described explosion-protection equipment comprises successively the sealing ring that connects, burst disk, and goes up cap.
10. battery as claimed in claim 9 is characterized in that described burst disk is provided with indentation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202622511U CN201601187U (en) | 2009-12-31 | 2009-12-31 | Lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202622511U CN201601187U (en) | 2009-12-31 | 2009-12-31 | Lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201601187U true CN201601187U (en) | 2010-10-06 |
Family
ID=42812250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202622511U Expired - Fee Related CN201601187U (en) | 2009-12-31 | 2009-12-31 | Lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201601187U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102956924A (en) * | 2012-11-20 | 2013-03-06 | 江苏富朗特新能源有限公司 | Manufacturing method of single-body lithium battery for high-capacity energy storage |
| CN103682206A (en) * | 2012-09-12 | 2014-03-26 | 深圳市沃特玛电池有限公司 | Leakage-proof cap of lithium ion power battery |
| CN106025322A (en) * | 2015-03-26 | 2016-10-12 | 三星Sdi株式会社 | Secondary battery |
| CN107732044A (en) * | 2017-11-16 | 2018-02-23 | 广州中国科学院工业技术研究院 | Lithium ion battery and its covering plate structure |
| CN113915690A (en) * | 2021-08-26 | 2022-01-11 | 芜湖华族环境技术股份有限公司 | Riveting structure and insulating mounting rack applying same |
-
2009
- 2009-12-31 CN CN2009202622511U patent/CN201601187U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103682206A (en) * | 2012-09-12 | 2014-03-26 | 深圳市沃特玛电池有限公司 | Leakage-proof cap of lithium ion power battery |
| CN103682206B (en) * | 2012-09-12 | 2016-12-21 | 深圳市沃特玛电池有限公司 | A kind of Leak-proof cap of lithium-ion-power cell |
| CN102956924A (en) * | 2012-11-20 | 2013-03-06 | 江苏富朗特新能源有限公司 | Manufacturing method of single-body lithium battery for high-capacity energy storage |
| CN106025322A (en) * | 2015-03-26 | 2016-10-12 | 三星Sdi株式会社 | Secondary battery |
| CN107732044A (en) * | 2017-11-16 | 2018-02-23 | 广州中国科学院工业技术研究院 | Lithium ion battery and its covering plate structure |
| CN113915690A (en) * | 2021-08-26 | 2022-01-11 | 芜湖华族环境技术股份有限公司 | Riveting structure and insulating mounting rack applying same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Shenzhen BYD Lithium Battery Co., Ltd. Assignor: Biyadi Co., Ltd. Contract record no.: 2011440020249 Denomination of utility model: Process for preparing C/C composition used for negative electrode of lithium ion bettery Granted publication date: 20101006 License type: Exclusive License Record date: 20110623 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101006 Termination date: 20151231 |
|
| EXPY | Termination of patent right or utility model |