CN2854827Y - Lithium ion battery - Google Patents
Lithium ion battery Download PDFInfo
- Publication number
- CN2854827Y CN2854827Y CNU2005200363143U CN200520036314U CN2854827Y CN 2854827 Y CN2854827 Y CN 2854827Y CN U2005200363143 U CNU2005200363143 U CN U2005200363143U CN 200520036314 U CN200520036314 U CN 200520036314U CN 2854827 Y CN2854827 Y CN 2854827Y
- Authority
- CN
- China
- Prior art keywords
- battery
- cover plate
- lithium ion
- plate assembly
- groove
- 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
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 26
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 23
- 239000003792 electrolyte Substances 0.000 claims abstract description 13
- 238000009413 insulation Methods 0.000 claims description 23
- 238000007789 sealing Methods 0.000 claims description 5
- 230000007797 corrosion Effects 0.000 claims description 3
- 238000005260 corrosion Methods 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion 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
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
A lithium ion battery comprises a casing, a cover plate assembly, a battery core and electrolyte. The casing and the cover plate assembly constitute a sealed space for accommodating the battery core and electrolyte. The battery core comprises positive and negative electrodes, and electrode tabs respectively connected with the positive and negative electrodes. A safety protective device of planar structure is disposed between the cover plate assembly and battery core, with through groove formed thereon. The positive and negative electrode tabs of the battery core penetrate through the through groove of the safety device, are electrically connected with the cover plate assembly and insulated from inner wall of the casing.
Description
[technical field]
The utility model relates to lithium ion battery, is specifically related to have the lithium ion battery of safety guard.
[technical background]
The liquid lithium ion secondary cell is being represented the most advanced level of current chemical power source development as the new green environment protection battery.Because lithium ion battery has advantages such as high-energy-density, long circulation life, memory-less effect, safety nuisance free and quick charge and discharge, be widely used in the electronic devices such as video camera, notebook computer at present, and progressively expanded range of application to fields such as electric bicycle, electric automobiles.Along with the rapid surge of lithium ion battery at communication and IT industry consumption, the security performance of battery also becomes increasingly conspicuous, and not only requires lithium ion battery to have excellent electric performance but also require to have higher security performance.
The security performance of liquid lithium ionic cell is battery security requirement to battery under unconventional situation.Short-circuit capability is one of its important security requirement, because the inside battery space is less, keeps away in lug and the housing or metal battery covers to be in contact with one another generation is arranged when causing short circuit phenomenon.Lithium ion battery is short-circuited and will makes battery heating, hot, and the interior pressure battery that acquires a certain degree will be blasted.In order to address this problem, all adopt at present an insulation spacer is installed below battery cover board, a kind of lithium ion battery is disclosed as our company's granted patent (authorizing publication number CN27085164Y), comprise a housing, one cover plate assembly, one battery and electrolyte, this housing and cover plate assembly are formed a seal cavity, this battery and electrolyte are contained in the sealing space, this battery comprises both positive and negative polarity and the leader tape that is connected this both positive and negative polarity (lug), one safety device is set between this cover plate assembly and battery, this safety device is a groove structure, have the groove of running through on it, the groove that runs through that the both positive and negative polarity connection leader tape (lug) of electric core passes this safety device is electrically connected with this cover plate assembly, and will be just, negative pole connects leader tape (lug) and this housing interior wall and separates and make its insulation.This safety device has occupied bigger space owing to become groove structure, and certain difficulty has been with in assembling to battery, and because its structure is relatively complicated, production cost is higher relatively.
[utility model content]
At the deficiency of above scheme, the purpose of this utility model be to provide a kind of assembling easily, cost is lower and safe lithium ion battery.
For achieving the above object, the utility model is taked following technical scheme:
A kind of lithium ion battery, it comprises a housing, a cover plate assembly, a battery and electrolyte, this housing and cover plate assembly are formed a seal cavity, this battery and electrolyte are contained in the sealing space, the corresponding positive and negative electrode lug that connects of positive and negative electrode on the battery, it is characterized in that: between described cover plate assembly and battery, be provided with an insulation board that is used for planar structure that positive and negative electrode lug and described inner walls are separated, have the groove of running through on the described insulation board, the positive and negative electrode lug on the described battery passes this to be run through groove and is electrically connected with cover plate assembly.
Described insulation board is the plastics or the rubber of acidproof, alkaline-resisting and anti-lithium-ion electrolyte corrosion.
The described length direction setting that runs through groove along this insulation board.
Described insulation board is provided with two and runs through groove, and the positive and negative electrode lug passes respectively and different is electrically connected with cover plate assembly after running through groove.
Describedly run through the width of groove and the width and the thickness of length and positive and negative electrode lug matches, make it can pass the positive and negative electrode lug easily.
The width of described insulation board and length are more smaller than the width and the length of this battery container inside respectively.
Adopt technique scheme, the utlity model has following advantage: 1, owing to the insulation board that adopts planar structure, the one, simple in structure, it is less to occupy the inside battery space, easily assembling; The 2nd, manufacturing cost reduces, thereby can reduce the production cost of lithium ion battery, and because safety device battery.2, run through groove by be provided with two on insulation board, the positive and negative electrode lug passes respectively and different is electrically connected with cover plate assembly after running through groove, can effectively prevent the short circuit phenomenon between the positive and negative electrode lug.
[description of drawings]
Fig. 1 is the lithium ion battery structure schematic diagram that the utility model provides.
Fig. 2 is a safety device schematic diagram in the utility model.
[embodiment]
A kind of lithium ion battery, as shown in Figure 1, it comprises a housing 1, a cover plate assembly 6, a battery 2 and electrolyte (not drawing among the figure), and this housing 1 and cover plate assembly 6 form a seal cavity, and battery and electrolyte are contained in the sealing space.Positive and negative electrode on the battery 2 connects positive pole ear 4 and negative lug 3 respectively.Between cover plate assembly 6 and battery 2, be provided with one and be used for the insulation board 5 that the inwall with positive and negative lug (4,3) and this housing 1 separates, as shown in Figure 2, the width of insulation board 5 and length are more smaller than the width and the length of this battery container inside respectively, this insulation board 5 is planar structures, have the groove of running through 7 on it, two corresponding both positive and negative polarity tie points that run through groove 7 and be arranged on the cover plate assembly 6 that the positive and negative lug on this battery 2 (4,3) passes respectively on this insulation board 5 electrically connect.Run through the width of groove 7 and the width and the thickness of length and positive and negative electrode lug and match, make it can pass the positive and negative electrode lug easily.Insulation board 9 can adopt the plastics of acidproof, alkaline-resisting and anti-lithium-ion electrolyte corrosion or rubber to make.
When making this battery, earlier make positive/negative plate, the pole piece that is welded with positive and negative lug is wound into a battery together with barrier film, in the battery container of then should the electricity core body packing into by usual technology.When packing into, do not need to pack into fully, as shown in Figure 1, pack into and 4/5 get final product, again positive and negative lug 4 and 3 is located in the running through in the groove 7 of insulation board 5, electrically connect with the corresponding both positive and negative polarity tie point that is arranged on the cover plate assembly 6 respectively then, electric core body is packed in the battery case fully, cover cover plate, Laser Welding sealing, fluid injection, seal up liquid injection hole and get the battery that a utility model provides.
Because safety guard of the present utility model adopts the insulation board of planar structure; make the cost of making reduce, thereby can reduce the production cost of lithium ion battery, and because safety device is simple in structure; it is less to occupy the inside battery space, and the battery assembling is also more or less freely.
Claims (6)
1, a kind of lithium ion battery, it comprises a housing, one cover plate assembly, one battery and electrolyte, this housing and cover plate assembly are formed a seal cavity, this battery and electrolyte are contained in the sealing space, on the battery just, negative pole is corresponding just to be connected, negative lug, it is characterized in that: between described cover plate assembly and battery, be provided with one and be used for just, the insulation board of the planar structure that negative lug and described inner walls separate, have the groove of running through on the described insulation board, on the described battery just, negative lug is passed this and is run through groove and be electrically connected with cover plate assembly.
2, lithium ion battery according to claim 1 is characterized in that: described insulation board is the plastics or the rubber of acidproof, alkaline-resisting and anti-lithium-ion electrolyte corrosion.
3, lithium ion battery according to claim 1 is characterized in that: the described length direction setting that runs through groove along this insulation board.
4, according to any described lithium ion battery of claim 1-3, it is characterized in that: described insulation board is provided with two and runs through groove, and the positive and negative electrode lug passes respectively and different is electrically connected with cover plate assembly after running through groove.
5, lithium ion battery according to claim 4 is characterized in that: describedly run through the width of groove and the width and the thickness of length and positive and negative electrode lug matches, make it can pass the positive and negative electrode lug easily.
6, according to any described lithium ion battery of claim 1-3, it is characterized in that: the width of described insulation board and length are more smaller than the width and the length of this battery container inside respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200363143U CN2854827Y (en) | 2005-11-21 | 2005-11-21 | Lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200363143U CN2854827Y (en) | 2005-11-21 | 2005-11-21 | Lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2854827Y true CN2854827Y (en) | 2007-01-03 |
Family
ID=37581463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2005200363143U Expired - Lifetime CN2854827Y (en) | 2005-11-21 | 2005-11-21 | Lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2854827Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010017782A1 (en) * | 2008-08-15 | 2010-02-18 | 深圳市比克电池有限公司 | Connection structure and assembly method between battery lug and cover plate |
| CN101604763B (en) * | 2009-07-07 | 2012-07-04 | 广东国光电子有限公司 | Narrow type lithium-ion battery and manufacturing process thereof |
| CN104332568A (en) * | 2014-09-11 | 2015-02-04 | 超源精密电子设备(东莞)有限公司 | Tab protection zone punching method for battery packaging |
| CN113140846A (en) * | 2021-04-16 | 2021-07-20 | 武汉孚安特科技有限公司 | Lithium-manganese battery and manufacturing method thereof |
| WO2023151080A1 (en) * | 2022-02-14 | 2023-08-17 | 宁德新能源科技有限公司 | Insulation sheet, battery cell and electronic apparatus |
-
2005
- 2005-11-21 CN CNU2005200363143U patent/CN2854827Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010017782A1 (en) * | 2008-08-15 | 2010-02-18 | 深圳市比克电池有限公司 | Connection structure and assembly method between battery lug and cover plate |
| CN101604763B (en) * | 2009-07-07 | 2012-07-04 | 广东国光电子有限公司 | Narrow type lithium-ion battery and manufacturing process thereof |
| CN104332568A (en) * | 2014-09-11 | 2015-02-04 | 超源精密电子设备(东莞)有限公司 | Tab protection zone punching method for battery packaging |
| CN104332568B (en) * | 2014-09-11 | 2016-11-23 | 超源精密电子设备(东莞)有限公司 | A kind of lug protection zone blanking method encapsulating battery |
| CN113140846A (en) * | 2021-04-16 | 2021-07-20 | 武汉孚安特科技有限公司 | Lithium-manganese battery and manufacturing method thereof |
| WO2023151080A1 (en) * | 2022-02-14 | 2023-08-17 | 宁德新能源科技有限公司 | Insulation sheet, battery cell and electronic apparatus |
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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: 20070103 |
|
| EXPY | Termination of patent right or utility model |