CN201126833Y - Aluminum alloy shell lithium-ion battery structure - Google Patents
Aluminum alloy shell lithium-ion battery structure Download PDFInfo
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- CN201126833Y CN201126833Y CNU2007200989353U CN200720098935U CN201126833Y CN 201126833 Y CN201126833 Y CN 201126833Y CN U2007200989353 U CNU2007200989353 U CN U2007200989353U CN 200720098935 U CN200720098935 U CN 200720098935U CN 201126833 Y CN201126833 Y CN 201126833Y
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- battery
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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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- Sealing Battery Cases Or Jackets (AREA)
- Secondary Cells (AREA)
- Filling, Topping-Up Batteries (AREA)
Abstract
本实用新型属于铝合金壳体锂离子电池结构，包括：上盖、壳体、底盖，其特点是：所述铝合金电池底盖上面设置有一个圆形凸台，所述正极导流耳与所述电池底盖凸台的侧边缘处超声焊接为一体；所述负极柱下端设置有一种圆盘，负极导流耳与圆盘侧边缘由电阻焊或超声焊接为一体；所述铝合金壳体与电池上盖和电池底盖激光密封焊接为一体。由于采用焊接的方式将负极导流耳与负极极柱连为一体，采用焊接的方式将正极导流耳与正极极柱和电池壳、电池上盖、电池底盖焊接为一体，减小了欧姆阻抗，减小了电池的体积。由于电池底盖设有凸台，正极导流耳焊接在凸台边缘，减小了欧姆阻抗，在相同比能量的前提下，减小了电池的体积。
The utility model belongs to the lithium ion battery structure of an aluminum alloy shell, comprising: an upper cover, a shell, and a bottom cover, and is characterized in that: a circular boss is arranged on the bottom cover of the aluminum alloy battery, and the positive electrode guide ear It is integrated with the side edge of the boss of the battery bottom cover by ultrasonic welding; a disc is provided at the lower end of the negative pole, and the negative electrode guide lug is integrated with the side edge of the disc by resistance welding or ultrasonic welding; the aluminum alloy The casing is laser-sealed and welded together with the battery upper cover and the battery bottom cover. Since the negative electrode diversion lug is integrated with the negative electrode pole by welding, and the positive electrode diversion lug is welded with the positive electrode pole and the battery case, battery upper cover, and battery bottom cover by welding, the ohm is reduced. impedance, reducing the volume of the battery. Since the bottom cover of the battery is provided with a raised platform, the positive electrode guide lug is welded to the edge of the raised platform, which reduces the ohmic impedance and reduces the volume of the battery under the premise of the same specific energy.
Description
技术领域technical field
本实用新型属于大容量锂离子电池技术领域，特别是涉及一种铝合金壳体锂离子电池结构。The utility model belongs to the technical field of large-capacity lithium-ion batteries, in particular to an aluminum alloy shell lithium-ion battery structure.
背景技术Background technique
目前，铝合金壳体锂离子电池正、负极导流耳与极柱或壳体的连接方式均为铆接，该结构增大了电池的欧姆阻抗，同时增大了电池总体体积。At present, the positive and negative electrode lugs of aluminum alloy casing lithium-ion batteries are connected to the pole or casing by riveting. This structure increases the ohmic impedance of the battery and increases the overall volume of the battery.
实用新型内容Utility model content
本实用新型为解决现有技术中存在的问题，而提供了一种正、负极均采用焊接结构，减小欧姆阻抗，减小电池体积的铝合金壳体锂离子电池结构。In order to solve the problems in the prior art, the utility model provides a lithium-ion battery structure with an aluminum alloy shell that adopts a welded structure to reduce ohmic impedance and battery volume.
本实用新型为解决公知技术中存在的技术问题采用的技术方案是：The technical scheme that the utility model adopts for solving the technical problem existing in the known technology is:
铝合金壳体锂离子电池结构，包括：铝合金电池上盖、压缩密封件、负极柱、负极导流耳、铝合金电池壳体、极组、正极导流耳、正极柱、铝合金电池底盖，其特点是：所述铝合金电池底盖上面设置有一个圆形凸台，所述正极导流耳与所述电池底盖凸台的侧边缘处超声焊接为一体；所述负极柱下端设置有一种圆盘，负极导流耳与圆盘侧边缘由电阻焊或超声焊接为一体；所述铝合金壳体与电池上盖和电池底盖激光密封焊接为一体。Aluminum alloy casing lithium-ion battery structure, including: aluminum alloy battery cover, compression seal, negative pole, negative diversion lug, aluminum alloy battery case, pole group, positive diversion lug, positive pole, aluminum alloy battery bottom The cover is characterized in that: a circular boss is arranged on the bottom cover of the aluminum alloy battery, and the positive electrode diversion ear is ultrasonically welded together with the side edge of the boss of the battery bottom cover; the lower end of the negative pole A disc is provided, and the negative electrode guide lug is integrated with the side edge of the disc by resistance welding or ultrasonic welding; the aluminum alloy shell is integrated with the battery upper cover and the battery bottom cover by laser sealing welding.
本实用新型还可以采用如下技术措施来实现：The utility model can also be realized by adopting the following technical measures:
铝合金壳体锂离子电池结构，其特点是：所述负极柱中心设置有小孔作为注液孔。Aluminum alloy shell lithium-ion battery structure is characterized in that: the center of the negative pole is provided with a small hole as a liquid injection hole.
铝合金壳体锂离子电池结构，其特点是：所述负极柱为镍负极柱或不锈钢负极柱。Aluminum alloy shell lithium-ion battery structure, characterized in that: the negative pole is a nickel negative pole or a stainless steel negative pole.
铝合金壳体锂离子电池结构，其特点是：所述负极柱小圆外径与所述压缩密封件内径紧密配合，所述压缩密封件外径与所述电池上盖内孔紧密配合，所述电池负极柱和压缩密封件通过过盈配合装配到电池上盖内孔中。Aluminum alloy shell lithium-ion battery structure, which is characterized in that: the outer diameter of the small circle of the negative pole is closely matched with the inner diameter of the compression seal, and the outer diameter of the compression seal is closely matched with the inner hole of the battery cover. The battery negative post and the compression seal are assembled into the inner hole of the battery upper cover through interference fit.
铝合金壳体锂离子电池结构，其特点是：所述电池极组包括负极片、聚乙烯聚丙烯符合隔膜和正极片，由负极包正极卷绕而成，正、负导流耳分别由所述电池极组的两端引出。Aluminum alloy shell lithium-ion battery structure, which is characterized in that: the battery electrode group includes a negative electrode sheet, polyethylene polypropylene composite diaphragm and positive electrode sheet, which is wound from the negative electrode to the positive electrode, and the positive and negative diversion lugs are respectively formed by the The two ends of the battery pole group are drawn out.
铝合金壳体锂离子电池结构，其特点是：所述注液孔注液后由电阻焊密封焊接。Aluminum alloy shell lithium-ion battery structure is characterized in that: the liquid injection hole is sealed and welded by resistance welding after liquid injection.
本实用新型具有的优点和积极效果是：由于采用焊接的方式将负极导流耳与负极极柱连为一体，采用焊接的方式将正极导流耳与正极极柱和电池壳、电池上盖、电池底盖焊接为一体，减小了欧姆阻抗，减小了电池的体积。由于电池底盖设有凸台，正极导流耳焊接在凸台边缘，减小了欧姆阻抗，在相同比能量的前提下，减小了电池的体积。The utility model has the advantages and positive effects: since the negative electrode diversion lug and the negative pole pole are connected as a whole by welding, the positive electrode diversion lug and the positive pole pole and the battery shell, the battery cover, The bottom cover of the battery is welded as a whole, which reduces the ohmic impedance and the volume of the battery. Since the bottom cover of the battery is provided with a raised platform, the positive electrode guide lug is welded to the edge of the raised platform, which reduces the ohmic impedance and reduces the volume of the battery under the same specific energy.
附图说明Description of drawings
图1为本实用新型一种铝合金壳体锂离子电池结构示意图。Fig. 1 is a schematic structural diagram of an aluminum alloy casing lithium-ion battery of the present invention.
图中的标号分别为：1为电池上盖，2为压缩密封件，3为负极柱，4为负极镍导流耳，5为电池壳，6为极组，7为正极铝导流耳，8为电池底盖。The labels in the figure are: 1 is the battery cover, 2 is the compression seal, 3 is the negative pole, 4 is the negative nickel diversion lug, 5 is the battery shell, 6 is the pole group, 7 is the positive aluminum diversion lug, 8 is the battery bottom cover.
具体实施方式Detailed ways
为能进一步了解本实用新型的发明内容、特点及功效，兹列举以下实施例，并配合附图详细说明如下：In order to further understand the invention content, characteristics and effects of the present utility model, the following embodiments are listed hereby, and detailed descriptions are as follows in conjunction with the accompanying drawings:
请参照图1：将电池中带有凸台的负极柱3小圆外径与塑料压缩密封件2内径紧密配合，带有内孔的电池上盖1内孔与压缩密封件2的外径紧密配合，电池负极柱3和压缩密封件2采用过盈配合装配到电池上盖1的内孔中。电池极组6包括负极片，聚乙烯聚丙烯复合隔膜，正极片，采用负极包正极的方式卷绕而成，正负导流耳分别由极组的两端引出；镍负极导流耳4采用超声焊接或电阻焊接在负极柱3的圆盘侧边缘处，铝正极导流耳7采用超声焊接或电阻焊接在电池底盖8的内凸台侧边缘处；电池铝合金壳5采用激光焊接与电池上盖1、电池底盖8密封焊接；电解液通过负极柱3中心的小孔注入，小孔作为注液孔在注液后采用电阻焊焊接密封。Please refer to Figure 1: The outer diameter of the small circle of the negative pole column 3 with the boss in the battery is closely matched with the inner diameter of the plastic compression seal 2, and the inner hole of the battery cover 1 with an inner hole is closely matched with the outer diameter of the compression seal 2 Fitting, the battery negative post 3 and the compression sealing member 2 are assembled into the inner hole of the battery upper cover 1 by an interference fit. The battery electrode group 6 includes a negative electrode sheet, a polyethylene polypropylene composite diaphragm, and a positive electrode sheet, which are wound in a way that the negative electrode wraps the positive electrode. Ultrasonic welding or resistance welding is performed at the side edge of the disk of the negative pole 3, and the aluminum positive electrode diversion lug 7 is ultrasonically welded or resistance welded at the side edge of the inner boss of the battery bottom cover 8; the battery aluminum alloy case 5 is laser welded and The battery upper cover 1 and the battery bottom cover 8 are sealed and welded; the electrolyte is injected through the small hole in the center of the negative pole 3, and the small hole is used as a liquid injection hole and sealed by resistance welding after liquid injection.
工作原理：以附图为1例，电池负极端为负极柱3，正极端为铝合金制成焊接为一体的电池上盖1、壳体5和底盖8，电池镍负极导流耳4与负极柱3焊接为一体，电池铝正极导流耳7与电池底盖8焊接为一体，采用焊接连接结构有效的解决了以往铆接结构欧姆阻抗大的问题，节省了电池内部空间，减小了电池的体积。Working principle: Taking the attached figure as an example, the negative terminal of the battery is the negative pole 3, and the positive terminal is made of aluminum alloy. The negative column 3 is welded as one, and the battery aluminum positive electrode guide ear 7 and the battery bottom cover 8 are welded as one. The welding connection structure effectively solves the problem of large ohmic impedance of the previous riveted structure, saves the internal space of the battery, and reduces the battery capacity. volume of.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200989353U CN201126833Y (en) | 2007-12-14 | 2007-12-14 | Aluminum alloy shell lithium-ion battery structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CNU2007200989353U CN201126833Y (en) | 2007-12-14 | 2007-12-14 | Aluminum alloy shell lithium-ion battery structure |
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| CN201126833Y true CN201126833Y (en) | 2008-10-01 |
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| CNU2007200989353U Expired - Fee Related CN201126833Y (en) | 2007-12-14 | 2007-12-14 | Aluminum alloy shell lithium-ion battery structure |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102867936A (en) * | 2011-07-05 | 2013-01-09 | 珠海银通新能源有限公司 | High capacity battery and assembly method thereof |
| CN103545465A (en) * | 2013-10-17 | 2014-01-29 | 杭州山合江新能源技术有限公司 | Energy storage device with split type aluminum barrel and assembling method of energy storage device |
| CN104681770A (en) * | 2013-11-26 | 2015-06-03 | 中国电子科技集团公司第十八研究所 | Preparation method of current collecting device for high-rate charge-discharge high-capacity battery |
| CN112038512A (en) * | 2019-06-03 | 2020-12-04 | 天津依卓尔科技有限公司 | Waterproof casing of waterproof power supply, waterproof power supply and manufacturing method thereof |
-
2007
- 2007-12-14 CN CNU2007200989353U patent/CN201126833Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102867936A (en) * | 2011-07-05 | 2013-01-09 | 珠海银通新能源有限公司 | High capacity battery and assembly method thereof |
| CN103545465A (en) * | 2013-10-17 | 2014-01-29 | 杭州山合江新能源技术有限公司 | Energy storage device with split type aluminum barrel and assembling method of energy storage device |
| CN103545465B (en) * | 2013-10-17 | 2016-05-25 | 杭州山合江新能源技术有限公司 | A kind of energy storage device and assembly method thereof with split type aluminum barrel |
| CN104681770A (en) * | 2013-11-26 | 2015-06-03 | 中国电子科技集团公司第十八研究所 | Preparation method of current collecting device for high-rate charge-discharge high-capacity battery |
| CN104681770B (en) * | 2013-11-26 | 2018-08-03 | 中国电子科技集团公司第十八研究所 | The preparation method of battery current-collecting device |
| CN112038512A (en) * | 2019-06-03 | 2020-12-04 | 天津依卓尔科技有限公司 | Waterproof casing of waterproof power supply, waterproof power supply and manufacturing method thereof |
| CN112038512B (en) * | 2019-06-03 | 2025-10-28 | 深圳市依卓尔能源有限公司 | Waterproof housing of waterproof power supply, waterproof power supply and manufacturing method thereof |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081001 Termination date: 20121214 |