CN108598300A - a kind of battery cap - Google Patents
a kind of battery cap Download PDFInfo
- Publication number
- CN108598300A CN108598300A CN201810700783.2A CN201810700783A CN108598300A CN 108598300 A CN108598300 A CN 108598300A CN 201810700783 A CN201810700783 A CN 201810700783A CN 108598300 A CN108598300 A CN 108598300A
- Authority
- CN
- China
- Prior art keywords
- explosion
- battery cap
- proof
- orifice plate
- top cover
- 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.)
- Pending
Links
- 238000007789 sealing Methods 0.000 claims abstract description 9
- 238000003466 welding Methods 0.000 claims description 27
- 238000009413 insulation Methods 0.000 claims description 3
- 238000002955 isolation Methods 0.000 claims description 3
- 238000007373 indentation Methods 0.000 abstract 2
- 229910001416 lithium ion Inorganic materials 0.000 description 6
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
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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
-
- 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
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/183—Sealing members
-
- 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
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/342—Non-re-sealable arrangements
-
- 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)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Gas Exhaust Devices For Batteries (AREA)
Abstract
Description
技术领域technical field
本发明涉及电池领域，尤其涉及一种电池盖帽。The invention relates to the field of batteries, in particular to a battery cap.
背景技术Background technique
锂离子电池是一种充电电池，它主要依靠锂离子在正极和负极之间移动来工作。在充放电过程中，Li+在两个电极之间往返嵌入和脱嵌：充电池时，Li+从正极脱嵌，经过电解质嵌入负极，负极处于富锂状态；放电时则相反。由于锂离子电池具有体积小、重量轻、电量强、绿色环保等特点，已广泛应用于工业生产和日常生活中。A lithium-ion battery is a rechargeable battery that primarily relies on the movement of lithium ions between the positive and negative electrodes to function. During the charging and discharging process, Li+ intercalates and deintercalates back and forth between the two electrodes: when charging the battery, Li+ is deintercalated from the positive electrode, inserted into the negative electrode through the electrolyte, and the negative electrode is in a lithium-rich state; the opposite is true when discharging. Due to the characteristics of small size, light weight, strong power, and environmental protection, lithium-ion batteries have been widely used in industrial production and daily life.
电池盖帽是锂离子电池的重要组成部分，现有电池盖帽通过设置防爆片而使其具有防爆功能，然而，现有防爆片多为碗形结构，其增大了电池盖帽的厚度，电池盖帽的整体厚度达到3.85mm，无形中降低了电池壳的孔径，其次，现有电池盖帽的孔板与防爆片之间通过多个焊点相连，不仅降低了整个盖帽的强度，且当内压升高时，其响应速度较慢，大大降低了安全性，由此，急需解决。The battery cap is an important part of the lithium-ion battery. The existing battery cap has an explosion-proof function by setting an explosion-proof plate. However, most of the existing explosion-proof plates have a bowl-shaped structure, which increases the thickness of the battery cap. The overall thickness reaches 3.85mm, which virtually reduces the aperture of the battery case. Secondly, the orifice plate of the existing battery cap and the explosion-proof sheet are connected by multiple solder joints, which not only reduces the strength of the entire cap, but also reduces the strength of the entire cap when the internal pressure increases. , its response speed is slow, which greatly reduces the security, so it needs to be solved urgently.
发明内容Contents of the invention
本发明的目的在于针对上述问题，提供一种电池盖帽，以解决现有电池盖帽体积大、强度低、响应慢、安全性能差的问题。The purpose of the present invention is to address the above problems and provide a battery cap to solve the problems of the existing battery caps such as large volume, low strength, slow response and poor safety performance.
本发明的目的是通过以下技术方案来实现：The purpose of the present invention is to realize through the following technical solutions:
一种电池盖帽，包括密封圈，所述密封圈内依次封装有顶盖、防爆片和孔板，所述顶盖的中间处设置有向远离防爆片的一侧凸出的外凸部，且顶盖上位于外凸部的边缘开有多个气孔，所述防爆片与顶盖焊接连接，所述孔板上开有透气孔，所述防爆片为台阶状结构，其包括依次相连的基部、内凸部及连接部，所述内凸部向远离顶盖的一侧凸出，并凸出于基部表面，且内凸部上设置有第一防爆刻痕，所述连接部向远离顶盖的一侧凸出，并凸出于内凸部的表面，所述孔板的边缘与防爆片之间设置有起绝缘隔离作用的垫圈，且孔板的中间处对应连接部的位置设置有焊接部，所述焊接部与连接部焊接连接，所述孔板上位于焊接部的边缘设置有第二防爆刻痕。A battery cap, comprising a sealing ring, in which a top cover, an explosion-proof disc and an orifice plate are sequentially packaged, and the middle of the top cover is provided with a protruding part protruding toward a side away from the explosion-proof disc, and There are a plurality of air holes on the edge of the convex part on the top cover, the explosion-proof sheet is welded to the top cover, and air holes are opened on the orifice plate, and the explosion-proof sheet has a stepped structure, which includes successively connected bases , an inner convex portion and a connecting portion, the inner convex portion protrudes toward the side away from the top cover, and protrudes from the surface of the base, and the inner convex portion is provided with a first explosion-proof score, and the connecting portion is farther away from the top cover One side of the cover protrudes and protrudes from the surface of the inner convex part. A gasket for insulation and isolation is provided between the edge of the orifice plate and the explosion-proof plate, and the middle of the orifice plate is provided with a The welded part is welded to the connection part, and the edge of the welded part on the orifice plate is provided with a second explosion-proof score.
作为本发明的一种优选方案，所述防爆片还包括有翻边，所述翻边设置于基部的边缘，并包覆顶盖。As a preferred solution of the present invention, the explosion-proof disc further includes a flange, and the flange is arranged on the edge of the base and covers the top cover.
作为本发明的一种优选方案，所述翻边、基部、内凸部、连接部均为一体结构。As a preferred solution of the present invention, the flange, the base, the inner convex part and the connecting part are all integral structures.
作为本发明的一种优选方案，所述顶盖通过多道弧形焊线与防爆片焊接连接。As a preferred solution of the present invention, the top cover is welded and connected to the explosion-proof disk through multiple arc-shaped welding wires.
作为本发明的一种优选方案，所述的弧形焊线为3道，沿圆周方向均布。As a preferred solution of the present invention, there are three arc-shaped welding lines, which are evenly distributed along the circumferential direction.
作为本发明的一种优选方案，所述弧形焊线的弧度为40°。As a preferred solution of the present invention, the arc of the arc-shaped welding wire is 40°.
作为本发明的一种优选方案，所述焊接部通过圆形焊线与连接部焊接连接。As a preferred solution of the present invention, the welding part is connected to the connecting part by welding with a round welding wire.
作为本发明的一种优选方案，所述焊接部与孔板为一体结构。As a preferred solution of the present invention, the welding part and the orifice plate are integrally structured.
作为本发明的一种优选方案，所述密封圈的内壁上位于防爆片的上方设置有一圈凸棱。As a preferred solution of the present invention, a ring of ribs is provided on the inner wall of the sealing ring above the burst disk.
本发明的有益效果为，所述一种电池盖帽的防爆片采用台阶状结构，相较于传统碗形结构的防爆片，其能大大减小电池盖帽的厚度，其厚度由原来的3.85mm降低到3.45mm，进而能节省电池壳的空间，提高电池容量，其次，通过设置第一防爆刻痕、第二防爆刻痕，进而在电池内压升高时，能及时响应，起到防爆作用，从而大大提高了安全性，此外，顶盖通过多道弧形焊线与防爆片焊接连接，焊接部通过圆形焊线与连接部焊接连接，从而大大提高了整个电池盖帽的强度，结构简单、易于实现。The beneficial effect of the present invention is that the explosion-proof plate of the battery cap adopts a stepped structure, which can greatly reduce the thickness of the battery cap compared with the explosion-proof plate of the traditional bowl-shaped structure, and its thickness is reduced from the original 3.85mm To 3.45mm, which can save the space of the battery case and increase the battery capacity. Secondly, by setting the first explosion-proof score and the second explosion-proof score, it can respond in time when the internal pressure of the battery rises, and play an explosion-proof role. This greatly improves the safety. In addition, the top cover is welded to the explosion-proof sheet through multiple arc welding wires, and the welding part is welded to the connection part through round welding wires, thereby greatly improving the strength of the entire battery cap. The structure is simple and Easy to implement.
附图说明Description of drawings
图1为一种电池盖帽的正视剖视图；Fig. 1 is a front sectional view of a battery cap;
图2是图1所示的一种电池盖帽在A处的放大图；Fig. 2 is an enlarged view of a battery cap shown in Fig. 1 at A;
图3为一种电池盖帽的俯视图；Fig. 3 is a top view of a battery cap;
图4为一种电池盖帽的仰视图。Fig. 4 is a bottom view of a battery cap.
具体实施方式Detailed ways
下面结合附图并通过具体实施方式来进一步说明本发明的技术方案。可以理解的是，此处所描述的实施例仅仅用于解释本发明，而非对本发明的限定。The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods. It should be understood that the embodiments described here are only used to explain the present invention, but not to limit the present invention.
请参照图1至图4所示，图1为一种电池盖帽的结构示意图；图2是图1所示的一种电池盖帽在A处的放大图；图3为一种电池盖帽的俯视图；图4为一种电池盖帽的仰视图。Please refer to Figures 1 to 4, Figure 1 is a schematic structural view of a battery cap; Figure 2 is an enlarged view of the battery cap shown in Figure 1 at A; Figure 3 is a top view of a battery cap; Fig. 4 is a bottom view of a battery cap.
于本实施例中，一种电池盖帽，包括密封圈1，所述密封圈1内依次封装有顶盖2、防爆片3和孔板4，所述密封圈1的内壁上位于防爆片3的上方设置有一圈凸棱11，所述顶盖2的中间处设置有向上凸出的外凸部21，且顶盖2上位于外凸部21的边缘开有3个气孔22，所述防爆片3通过3道弧形焊线23与顶盖2焊接连接，所述的3道弧形焊线23沿圆周方向均布，弧形焊线23的弧度为40°，所述孔板4上开有5个透气孔41，所述防爆片3为台阶状结构，其包括依次相连的翻边33、基部31、内凸部32及连接部35，所述翻边33、基部31、内凸部32、连接部35均为一体结构，所述翻边33设置于基部31的边缘，并包覆顶盖2，所述内凸部32向下侧凸出，并凸出于基部31表面，且内凸部32上设置有第一防爆刻痕34，所述连接部35向下侧凸出，并凸出于内凸部32的表面，所述孔板4的边缘与防爆片3之间设置有起绝缘隔离作用的垫圈5，且孔板4的中间处对应连接部35的位置设置有焊接部42，所述焊接部42与孔板4为一体结构，所述焊接部42通过圆形焊线44与连接部35焊接连接，所述孔板4上位于焊接部42的边缘设置有第二防爆刻痕43。In this embodiment, a battery cap includes a sealing ring 1, a top cover 2, an explosion-proof sheet 3 and an orifice 4 are sequentially packaged in the sealing ring 1, and the inner wall of the sealing ring 1 is located on the side of the explosion-proof sheet 3. There is a ring of ribs 11 on the top, an upwardly protruding outer convex portion 21 is arranged in the middle of the top cover 2, and three air holes 22 are opened on the edge of the outer convex portion 21 on the top cover 2. The explosion-proof sheet 3. The top cover 2 is welded and connected by three arc-shaped welding lines 23, the three arc-shaped welding lines 23 are evenly distributed along the circumferential direction, the arc of the arc-shaped welding lines 23 is 40°, and the opening on the orifice plate 4 There are 5 ventilation holes 41, and the explosion-proof plate 3 is a stepped structure, which includes a flange 33, a base portion 31, an inner convex portion 32 and a connecting portion 35 connected in sequence, and the flange 33, base portion 31, inner convex portion 32. The connecting part 35 is an integral structure, the flange 33 is arranged on the edge of the base 31 and covers the top cover 2, the inner convex part 32 protrudes downward and protrudes from the surface of the base 31, and The inner convex part 32 is provided with a first explosion-proof score 34, the connecting part 35 protrudes downward and protrudes from the surface of the inner convex part 32, and the edge of the orifice plate 4 and the explosion-proof disc 3 are arranged There is a gasket 5 for insulation and isolation, and a welding part 42 is provided at the position corresponding to the connecting part 35 in the middle of the orifice plate 4. The welding part 42 is integrally structured with the orifice plate 4. The wire 44 is welded to the connecting portion 35 , and the orifice plate 4 is provided with a second explosion-proof notch 43 on the edge of the welding portion 42 .
上述一种电池盖帽的防爆片采用台阶状结构，相较于传统碗形结构的防爆片，其能大大减小电池盖帽的厚度，其厚度由原来的3.85mm降低到3.45mm，进而能节省电池壳的空间，提高电池容量，其次，通过设置第一防爆刻痕34、第二防爆刻痕43，进而在电池内压升高时，能及时响应，起到防爆作用，从而大大提高了安全性，此外，顶盖2通过3道弧形焊线23与防爆片3焊接连接，焊接部42通过圆形焊线44与连接部35焊接连接，从而大大提高了整个电池盖帽的强度。上述一种电池盖帽具有体积小、强度大、安全性高的特点。The explosion-proof plate of the above-mentioned battery cap adopts a stepped structure. Compared with the explosion-proof plate of the traditional bowl-shaped structure, it can greatly reduce the thickness of the battery cap, and its thickness is reduced from the original 3.85mm to 3.45mm, thereby saving batteries. The space of the shell increases the battery capacity. Secondly, by setting the first explosion-proof notch 34 and the second explosion-proof notch 43, when the internal pressure of the battery rises, it can respond in time and play an explosion-proof role, thereby greatly improving safety. In addition, the top cover 2 is welded to the explosion-proof plate 3 through three arc welding wires 23, and the welding part 42 is welded to the connection part 35 through a round welding wire 44, thereby greatly improving the strength of the entire battery cap. The above battery cap has the characteristics of small size, high strength and high safety.
以上实施例只是阐述了本发明的基本原理和特性，本发明不受上述实施例限制，在不脱离本发明精神和范围的前提下，本发明还有各种变化和改变，这些变化和改变都落入要求保护的本发明范围内。本发明要求保护范围由所附的权利要求书界定。The above embodiments have only set forth the basic principles and characteristics of the present invention. The present invention is not limited by the above embodiments. On the premise of not departing from the spirit and scope of the present invention, the present invention also has various changes and changes. These changes and changes are all fall within the scope of the claimed invention. The protection scope of the present invention is defined by the appended claims.
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810700783.2A CN108598300A (en) | 2018-06-29 | 2018-06-29 | a kind of battery cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810700783.2A CN108598300A (en) | 2018-06-29 | 2018-06-29 | a kind of battery cap |
Publications (1)
| Publication Number | Publication Date |
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| CN108598300A true CN108598300A (en) | 2018-09-28 |
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ID=63634694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810700783.2A Pending CN108598300A (en) | 2018-06-29 | 2018-06-29 | a kind of battery cap |
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| CN (1) | CN108598300A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110253142A (en) * | 2019-07-03 | 2019-09-20 | 伊欧激光科技（苏州）有限公司 | The automatic assembling device of cylindrical lithium ion cell cap |
| CN112018277A (en) * | 2020-08-21 | 2020-12-01 | 常州瑞德丰精密技术有限公司 | Battery case, secondary battery and battery pack |
| CN112234307A (en) * | 2020-11-05 | 2021-01-15 | 苏州橙柳电子精密有限公司 | A battery cap and cell that does not depend on solder joint blasting |
| CN115172955A (en) * | 2022-07-25 | 2022-10-11 | 苏州橙柳电子精密有限公司 | Ultra-large capacity lithium battery cap |
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| CN107492604A (en) * | 2017-08-02 | 2017-12-19 | 江苏镭腾能源科技有限公司 | A kind of dynamic lithium battery explosion-proof cap component |
| CN207097879U (en) * | 2017-08-10 | 2018-03-13 | 大连弘益精密部件制造有限公司 | Anti-explosion battery group lid |
| CN208655711U (en) * | 2018-06-29 | 2019-03-26 | 无锡金杨丸伊电子有限公司 | A kind of battery cap |
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| CN202712307U (en) * | 2012-08-08 | 2013-01-30 | 无锡市金杨新型电源有限公司 | Explosion-resistant combined cover of lithium ion battery |
| WO2016187819A1 (en) * | 2015-05-26 | 2016-12-01 | 张甘霖 | Cylindrical lithium ion battery |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110253142B (en) * | 2019-07-03 | 2024-08-16 | 伊欧激光科技（苏州）有限公司 | Automatic assembling device for cylindrical lithium ion battery cap |
| CN112018277A (en) * | 2020-08-21 | 2020-12-01 | 常州瑞德丰精密技术有限公司 | Battery case, secondary battery and battery pack |
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| CN112234307A (en) * | 2020-11-05 | 2021-01-15 | 苏州橙柳电子精密有限公司 | A battery cap and cell that does not depend on solder joint blasting |
| CN115172955A (en) * | 2022-07-25 | 2022-10-11 | 苏州橙柳电子精密有限公司 | Ultra-large capacity lithium battery cap |
| CN115172955B (en) * | 2022-07-25 | 2024-08-23 | 苏州橙柳电子精密有限公司 | Super-large capacity lithium battery cap |
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Application publication date: 20180928 |