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Cylindrical battery housing and cylindrical battery

A cylindrical battery and cylindrical technology, which is applied in the direction of secondary batteries, battery pack components, circuits, etc., can solve the problems of difficult welding of battery conductive terminals and battery shells, difficulty of welding cover plates, and sliding of battery cells, so as to avoid The effect of battery explosion, good welding quality and simple fixture

Active Publication Date: 2010-08-25
SHENZHEN BAK POWER BATTERY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This production method solves the technical problem of difficult welding of the battery conductive terminal and the battery case, but it also creates the following problems: Since the cylinder is transparent and bottomless, it is difficult to control the position of the battery unit after it is installed in the cylinder during the production process , The battery unit is easy to slide in the barrel, which makes assembly difficult, and also causes certain difficulties for the subsequent welding of the cover plate

Method used

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  • Cylindrical battery housing and cylindrical battery
  • Cylindrical battery housing and cylindrical battery
  • Cylindrical battery housing and cylindrical battery

Examples

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Embodiment 1

[0024] Embodiment 1: Referring to FIG. 1 to FIG. 4 , a cylindrical battery includes a cylindrical battery casing 1 , a battery unit 10 , an upper cover 3 and a lower cover 4 . The top of the cylindrical battery casing body 1 is open, and the top of the cylindrical battery casing body 1 is provided with a step 9 to facilitate engagement with the upper cover plate 3, and the bottom of the cylindrical battery casing body 1 has a stepped opening 2 The supporting platform 8 is used to support the battery unit 10, the outer edge of the lower cover 4 is provided with a step 6 matching the stepped opening 2, and the lower cover 4 is also provided with a pressure relief in time to prevent the battery The explosion groove 5 and the lower cover plate 4 are welded and sealed on the stepped opening 2 of the supporting platform 8 . In addition, the outer surface of the lower cover plate 4 is plated with metallic nickel 7 to facilitate the welding of the battery wires. The metallic nickel 7...

Embodiment 2

[0027] As shown in Figure 5, a cylindrical battery casing, the bottom of the cylindrical battery casing body 1 is a support platform 8 with a tapered opening 2, and correspondingly, the outer edge of the lower cover plate 4 is set to correspond to it The taper surface 6 (not pictured).

[0028] The manufacturing method of the above-mentioned battery case: the aluminum cylindrical battery case body is formed by stamping. The stamping process includes: 1) cutting the blank from the plate into a disc shape; 2) drawing the disc-shaped blank into a bottomed cylinder of the required shape; 3) punching a through hole at the bottom of the cylinder; 4) Punch the periphery of the through hole to form the desired shape, such as: stepped or tapered. Among them, blanking and deep drawing into a bottomed cylindrical shape are conventional processing methods. The bottom step hole is processed in this way: first punch the bottom of the bottomed cylinder, then press the bottom step, and final...

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Abstract

The invention relates to a cylindrical battery shell, comprising a cylinder, an upper cover plate and a lower cover plate, and is characterized in that the head of the cylinder is open and an open supporting table is arranged at the bottom of the cylinder, the lower cover plate is covered on the open mouth of the supporting table, and further more, the open mouth is a step-shaped mouth or a conical mouth, the invention further relates to a cylindrical battery made by the shell. Applying the technic proposal, the invention provides a cylindrical battery shell and a cylindrical battery which isconvenient for equipping and locating battery unit, and prevents the battery unit from skipping in the shell.

Description

【Technical field】 [0001] The invention relates to a cylindrical battery casing and a cylindrical battery, in particular to a cylindrical lithium battery. 【Background technique】 [0002] Lithium-ion battery is a high-capacity, high-power battery, which is mainly used in small devices, especially mobile phones, laptop computers, and portable power tools. Lithium-ion batteries are generally composed of a battery cover, a battery can, an electrolyte, and a battery unit wound by positive and negative electrodes and separator paper. In the prior art, the packaging of lithium-ion batteries usually adopts the following steps: first, put the wound battery core into the battery can; then weld the positive and negative electrode tabs to the cover assembly; The opening of the battery can is sealed by laser welding, thus forming a container with a battery core. In order to improve the tab welding process, the industry has adopted a production process of welding the upper and lower tran...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M2/02H01M10/40H01M10/0525H01M50/107H01M50/169H01M50/179H01M50/552
CPCY02E60/122Y02E60/10
Inventor 毛焕宇黄加军郑荣鹏吴抗张峰张建文
Owner SHENZHEN BAK POWER BATTERY CO LTD
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