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Preparation method of battery and cylindrical lithium battery

A technology of batteries and battery rolls, applied in the field of cylindrical lithium batteries and battery preparation, to achieve the effects of improving safety, increasing pressure relief openings, and avoiding short circuits

Pending Publication Date: 2022-03-18
SHENZHEN BAK POWER BATTERY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the embodiment of the present application is to provide a method for preparing a battery, aiming at solving the problem of how to improve the safety of the battery

Method used

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  • Preparation method of battery and cylindrical lithium battery
  • Preparation method of battery and cylindrical lithium battery
  • Preparation method of battery and cylindrical lithium battery

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Embodiment Construction

[0028] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present application.

[0029] It should be noted that when a component is referred to as being “fixed on” or “disposed on” another component, it may be directly on the other component or indirectly on the other component. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. The orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. are based on the orientation or positional relationship shown in the drawings, and are for convenience of description only, rather than indicating or implyi...

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Abstract

The invention belongs to the technical field of battery preparation, and particularly relates to a preparation method of a battery and a cylindrical lithium battery. The preparation method of the battery comprises the following steps that a shell is prepared, the shell is stretched to be cylindrical, a containing cavity is formed in the shell, the shell is provided with a closed end and an open end opposite to the closed end, and an electrode leading-out hole communicated with the containing cavity is formed in the end face of the closed end; an electrode is led out, the battery cell is placed in the containing cavity, the positive electrode end cover covers and seals the electrode leading-out hole, the positive electrode of the battery cell is led out to the positive electrode end cover through the electrode leading-out hole, and then the negative electrode of the battery cell is led out to the shell; the battery is packaged, electrolyte is injected into the containing cavity through the opening, and the explosion-proof piece is connected with the shell at the opening end in a sealed mode. According to the invention, the area of the explosion-proof sheet can be properly increased, the pressure relief opening is improved, and the safety of the battery is finally improved.

Description

technical field [0001] The invention belongs to the technical field of battery preparation, and in particular relates to a battery preparation method and a cylindrical lithium battery. Background technique [0002] At present, with the development of mobile electrical equipment and energy storage products, lithium batteries are gradually recognized by the market as a representative of high energy density batteries. The common shapes of lithium-ion batteries are mainly cylindrical and square. [0003] The production process of traditional cylindrical lithium batteries is as follows: making the battery core, setting the positive electrode current collector and the negative electrode current collector at both ends of the battery, and then placing the whole body into the casing, and then leading the positive electrode of the battery core to one end of the casing. Positive terminal cover, the positive terminal cover is welded to the positive current collector plate, and the posit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M50/107H01M50/167H01M50/342H01M10/058H01M10/052
CPCH01M50/107H01M50/167H01M50/3425H01M10/058H01M10/052Y02E60/10Y02P70/50
Inventor 赵俊峰佘奕奕
Owner SHENZHEN BAK POWER BATTERY CO LTD
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