CN108711594A - A kind of battery cover board - Google Patents
A kind of battery cover board Download PDFInfo
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- CN108711594A CN108711594A CN201810538782.2A CN201810538782A CN108711594A CN 108711594 A CN108711594 A CN 108711594A CN 201810538782 A CN201810538782 A CN 201810538782A CN 108711594 A CN108711594 A CN 108711594A
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- cover board
- battery
- positive terminal
- battery cover
- plastic part
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
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- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/543—Terminals
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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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Gas Exhaust Devices For Batteries (AREA)
Abstract
Description
技术领域technical field
本发明属于锂离子电池技术领域，特别涉及一种电池盖板。The invention belongs to the technical field of lithium ion batteries, in particular to a battery cover plate.
背景技术Background technique
随着世界范围内的能源危机和气候变暖，交通运输领域迫切需要一种全新的能源模式，而锂离子电池因其绿色环保，高能量输出等特性引起了交通运输领域的广泛关注，目前，世界范围内相关行业都对锂离子电池在此领域的应用展开了广泛的研究随着电动汽车技术的成熟和日益完善，电动汽车和混合动力汽车走进日常生活的梦想已成为可能，并且在电动汽车普及的过程中孕育着巨大的商机。而车载大容量动力电池性能的优劣直接影响着电动汽车的整体性能。这为电动汽车车载动力电池提出了更高的要求（比如要具有更高的安全性，更优秀的性能，重量更轻）。With the worldwide energy crisis and climate warming, a new energy model is urgently needed in the field of transportation, and lithium-ion batteries have attracted widespread attention in the field of transportation due to their green environmental protection and high energy output. At present, Relevant industries around the world have conducted extensive research on the application of lithium-ion batteries in this field. With the maturity and perfection of electric vehicle technology, the dream of electric vehicles and hybrid vehicles entering daily life has become possible. There are huge business opportunities in the process of automobile popularization. The performance of the vehicle's large-capacity power battery directly affects the overall performance of the electric vehicle. This puts forward higher requirements for electric vehicle on-board power batteries (such as higher safety, better performance, and lighter weight).
当前，电池的可靠性、安全性也是大容量动力电池制作过程中的一个技术难点和重点，特别是电池在制作过程中的高密封性，现在大容量电池对电池气密性要求更加严格，如果电池容量高，电池内压相对较高，使得电池的装配的零部件容易漏液或漏气，会给电池造成很大的安全隐患和形成电解液挥发、导致电池性能寿命衰减等问题。此外，当锂电池使用过程中，如果电池极柱与密封圈密封性不好时，电池内将吸入空气中的水分与电池内的电液混合，或者导致电池内部的电解液挥发干涸形成结晶，从而将会导致电池性能和循环寿命衰减，内阻增大，影响锂电池各种参数性能，最终导致电池无法继续使用，严重的还会引起电池的安全性。At present, the reliability and safety of batteries are also a technical difficulty and focus in the production process of large-capacity power batteries, especially the high airtightness of batteries in the production process. Now large-capacity batteries have stricter requirements on battery airtightness. If The battery capacity is high, and the internal pressure of the battery is relatively high, which makes the assembled parts of the battery easy to leak liquid or gas, which will cause great safety hazards to the battery, cause electrolyte volatilization, and lead to battery performance life attenuation and other problems. In addition, when the lithium battery is in use, if the seal between the battery pole and the sealing ring is not good, the moisture in the battery will be sucked into the air and mixed with the electrolyte in the battery, or the electrolyte inside the battery will evaporate and dry up to form crystals. As a result, the battery performance and cycle life will be attenuated, and the internal resistance will increase, which will affect the performance of various parameters of the lithium battery, and eventually cause the battery to be unable to continue to be used, and seriously cause the safety of the battery.
因此，本发明的结构，可以大大提高锂离子电池的装配的效率，保证锂离子电池的密封性，同时保证电池气密性，从而保证锂离子电池安全使用，并且大大延长电池的使用寿命。Therefore, the structure of the present invention can greatly improve the assembly efficiency of the lithium-ion battery, ensure the sealing performance of the lithium-ion battery, and at the same time ensure the air-tightness of the battery, thereby ensuring the safe use of the lithium-ion battery and greatly extending the service life of the battery.
发明内容Contents of the invention
本发明的目的是提供一种气密性非常突出的电池盖板。The purpose of the present invention is to provide a battery cover with outstanding airtightness.
为实现以上目的，本发明的技术方案为：For realizing above object, technical scheme of the present invention is:
一种电池盖板，包括盖板本体、正极柱、负极柱、注液孔和防爆阀，正极柱和负极柱活动连接在盖板本体上，正极柱包括两个匹配的金属部件和一个绝缘塑胶件，绝缘塑胶件位于两个金属部件之间进行匹配连接为正极柱。A battery cover, including a cover body, a positive pole, a negative pole, a liquid injection hole and an explosion-proof valve, the positive pole and the negative pole are movably connected to the cover body, and the positive pole includes two matching metal parts and an insulating plastic The insulating plastic part is located between the two metal parts for matching connection as the positive pole.
优选地，所述负极柱的结构与正极柱相同。Preferably, the structure of the negative pole is the same as that of the positive pole.
优选地，所述两个匹配的金属部件为第一金属件和第二金属件，第一金属件为底部向外垂直延伸而顶部向内收缩的空心圆柱体，第一金属件中间的空心圆柱体上设有用于固定绝缘塑胶件的固定孔。Preferably, the two matching metal parts are a first metal part and a second metal part, the first metal part is a hollow cylinder whose bottom extends vertically outward and the top shrinks inward, and the hollow cylinder in the middle of the first metal part The body is provided with fixing holes for fixing insulating plastic parts.
优选地，绝缘塑胶件内侧设有和第一金属件相匹配的固定凸起，第二金属件外侧设有和固定凸起向匹配的固定凹槽。Preferably, a fixing protrusion matching the first metal part is provided on the inside of the insulating plastic part, and a fixing groove matching the fixing protrusion is provided on the outside of the second metal part.
优选地，所述正极柱、负极柱焊接在盖板本体上。Preferably, the positive pole and the negative pole are welded on the cover body.
优选地，所述第二金属件一端设有卡扣凹槽，盖板本体上设有和卡扣凹槽相匹配的与盖板本体一体成型的卡扣。Preferably, one end of the second metal piece is provided with a buckle groove, and the cover body is provided with a buckle that matches the buckle groove and is integrally formed with the cover body.
本发明的有益效果是：The beneficial effects of the present invention are:
本发明的盖板本体上仅仅设有注液孔和防爆阀，没有设置极柱孔，减少了因为极柱孔的密封性不良造成电解液挥发等问题。而且本发明通过极柱的特殊连接结构，提高了锂电池的使用安全性。The cover plate body of the present invention is only provided with a liquid injection hole and an explosion-proof valve, and no pole hole is provided, which reduces problems such as electrolyte volatilization caused by poor sealing of the pole hole. Moreover, the present invention improves the use safety of the lithium battery through the special connection structure of the poles.
附图说明Description of drawings
图1为本发明实施例1的结构示意图（焊接）；Fig. 1 is the structural representation (welding) of embodiment 1 of the present invention;
图2为图1的组装后结构示意图；FIG. 2 is a schematic diagram of the assembled structure of FIG. 1;
图3为实施例1、2中正极柱的爆炸结构示意图；Fig. 3 is a schematic diagram of the explosion structure of the positive pole in Examples 1 and 2;
图4为实施例2的结构示意图（扣接）Figure 4 is a schematic structural diagram of Embodiment 2 (snap connection)
图5为图4的组装后结构示意图；FIG. 5 is a schematic diagram of the assembled structure of FIG. 4;
图6为图4中第二金属件的侧剖结构示意图；Fig. 6 is a side sectional schematic diagram of the second metal part in Fig. 4;
图7为实施例3中的第二金属件的底面结构示意图。FIG. 7 is a schematic diagram of the bottom surface structure of the second metal part in Embodiment 3. FIG.
图中：1、盖板本体；2、正极柱；3、负极柱；4、注液孔；5、防爆阀；6、第一金属件；7、第二金属件；8、绝缘塑胶件；9、固定凸起；10、固定凹槽；11、固定孔；12、卡扣凹槽；13、卡扣；14、正极焊接部；15、负极焊接部。In the figure: 1. Cover body; 2. Positive pole; 3. Negative pole; 4. Liquid injection hole; 5. Explosion-proof valve; 6. First metal part; 7. Second metal part; 8. Insulating plastic part; 9. Fixing protrusion; 10. Fixing groove; 11. Fixing hole; 12. Buckle groove; 13. Buckle; 14. Positive electrode welding part; 15. Negative electrode welding part.
具体实施方式Detailed ways
根据附图进一步说明本发明的一种实施方式。An embodiment of the present invention will be further described with reference to the accompanying drawings.
实施例1、Embodiment 1,
一种电池盖板，包括盖板本体1、正极柱2、负极柱3、注液孔4和防爆阀5，盖板本体1上设有正极焊接部14和负极焊接部15，正极柱3和负极柱4分别焊接在盖板本体1的正极焊接部14和负极焊接部15上，正极柱3包括两个相互匹配的金属部件和一个绝缘塑胶件，绝缘塑胶件位于两个金属部件之间进行匹配连接为正极柱。两个匹配的金属部件为第一金属件6和第二金属件7，第一金属件6为底部向外垂直延伸而顶部向内收缩的空心圆柱体，第一金属件6中间的空心圆柱体上设有用于固定绝缘塑胶件的固定孔11。绝缘塑胶件8内侧设有和第一金属件相匹配的固定凸起9，第二金属件7外侧设有和固定凸起9向匹配的固定凹槽10。负极柱4的结构与正极柱3相同。正极焊接部14和负极焊接部15向盖板本体1内凹陷。A battery cover, comprising a cover body 1, a positive pole 2, a negative pole 3, a liquid injection hole 4 and an explosion-proof valve 5, the cover body 1 is provided with a positive electrode welding part 14 and a negative electrode welding part 15, the positive pole 3 and the The negative pole 4 is respectively welded on the positive welding part 14 and the negative welding part 15 of the cover body 1. The positive pole 3 includes two matching metal parts and an insulating plastic part, and the insulating plastic part is located between the two metal parts. The matching connection is the positive post. The two matching metal parts are the first metal part 6 and the second metal part 7. The first metal part 6 is a hollow cylinder whose bottom extends vertically outward and the top shrinks inward. The hollow cylinder in the middle of the first metal part 6 Fixing holes 11 for fixing insulating plastic parts are provided on the top. The inner side of the insulating plastic part 8 is provided with a fixing protrusion 9 matching the first metal part, and the outer side of the second metal part 7 is provided with a fixing groove 10 matching with the fixing protrusion 9 . The structure of the negative pole 4 is the same as that of the positive pole 3 . The positive electrode welding portion 14 and the negative electrode welding portion 15 are recessed into the cover body 1 .
此实施方式结构简单，可以大大提高锂离子电池的装配的效率，降低电池的生产成本，且具有较好的防爆性能，安全性高，大大延长电池的使用寿命。This embodiment has a simple structure, can greatly improve the assembly efficiency of the lithium ion battery, reduce the production cost of the battery, and has better explosion-proof performance, high safety, and greatly prolongs the service life of the battery.
实施例2、Embodiment 2,
一种电池盖板，包括盖板本体1、正极柱2、负极柱3、注液孔4和防爆阀5，正极柱3和负极柱4分别通过卡扣和卡扣凹槽活动固定在在盖板本体1上，正极柱3包括两个相互匹配的金属部件和一个绝缘塑胶件，绝缘塑胶件位于两个金属部件之间进行匹配连接为正极柱。两个匹配的金属部件为第一金属件6和第二金属件7，第一金属件6为底部向外垂直延伸而顶部向内收缩的空心圆柱体，第一金属件6中间的空心圆柱体上设有用于固定绝缘塑胶件的固定孔11。绝缘塑胶件8内侧设有和第一金属件相匹配的固定凸起9，第二金属件7外侧设有和固定凸起9向匹配的固定凹槽10。第二金属件7一端设有卡扣凹槽12，盖板本体1上设有和卡扣凹槽12相匹配的与盖板本体一体成型的卡扣13。负极柱4的结构与正极柱3相同。A battery cover, comprising a cover body 1, a positive pole 2, a negative pole 3, a liquid injection hole 4, and an explosion-proof valve 5, the positive pole 3 and the negative pole 4 are respectively fixed on the cover through buckles and buckle grooves. On the board body 1, the positive pole 3 includes two metal parts that match each other and an insulating plastic part, and the insulating plastic part is located between the two metal parts for matching connection to form the positive pole. The two matching metal parts are the first metal part 6 and the second metal part 7. The first metal part 6 is a hollow cylinder whose bottom extends vertically outward and the top shrinks inward. The hollow cylinder in the middle of the first metal part 6 Fixing holes 11 for fixing insulating plastic parts are provided on the top. The inner side of the insulating plastic part 8 is provided with a fixing protrusion 9 matching the first metal part, and the outer side of the second metal part 7 is provided with a fixing groove 10 matching with the fixing protrusion 9 . One end of the second metal member 7 is provided with a buckle groove 12 , and the cover body 1 is provided with a buckle 13 that matches the buckle groove 12 and is integrally formed with the cover body. The structure of the negative pole 4 is the same as that of the positive pole 3 .
此实施方式操作简单，提高锂离子电池的装配的效率，降低电池的生产成本，且具有较好的防爆性能，而且还可以根据需要更换极柱的尺寸，具有很强的实用性。This embodiment is easy to operate, improves the assembly efficiency of the lithium-ion battery, reduces the production cost of the battery, and has good explosion-proof performance, and can also change the size of the pole according to the need, so it has strong practicability.
实施例3、Embodiment 3,
与实施例2的结构基本相同，只是增加了卡扣和卡扣凹槽的数量，卡扣13和卡扣凹槽12的数量为3。这样固定的极柱不会发生左右转动的现象，会更加牢固。The structure is basically the same as that of Embodiment 2, except that the number of buckles and buckle grooves is increased, and the number of buckles 13 and buckle grooves 12 is three. In this way, the fixed pole will not turn left and right, and will be more firm.
以上所述并非对本发明的技术范围作任何限制，凡依据本发明技术实质对以上的实施例所作的任何修改、等同变化与修饰，均仍属于本发明的技术方案的范围内。The above description does not limit the technical scope of the present invention in any way, and any modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solutions of the present invention.
Claims (6)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810538782.2A CN108711594A (en) | 2018-05-30 | 2018-05-30 | A kind of battery cover board |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810538782.2A CN108711594A (en) | 2018-05-30 | 2018-05-30 | A kind of battery cover board |
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| CN110048037A (en) * | 2019-04-15 | 2019-07-23 | 欣旺达电子股份有限公司 | A kind of no pole power battery top cover and power battery |
| CN112838301A (en) * | 2021-02-03 | 2021-05-25 | 湖北亿纬动力有限公司 | A battery top cover, battery and battery manufacturing process |
| CN113594595A (en) * | 2021-07-30 | 2021-11-02 | 蜻蜓实验室(深圳)有限公司 | Battery cover plate and power battery |
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Address after: 523000, Dongguan, Guangdong province Dongcheng District sand science and Technology Industrial Park Applicant after: Yidong Electronic Technology Co.,Ltd. Address before: 523000, Dongguan, Guangdong province Dongcheng District sand science and Technology Industrial Park Applicant before: DONGGUAN YIDONG TECHNOLOGY Co.,Ltd. |
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Application publication date: 20181026 |