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Cylindrical battery

A technology for cylindrical batteries and support columns, which is applied in the direction of secondary batteries, lithium batteries, battery pack components, etc., can solve the problems of complex manufacturing process and high cost, achieve simple operation, save cost, ensure welding area and current flow The effect of guiding ability

Pending Publication Date: 2021-06-04
深圳市懋略技术研究有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a cylindrical battery for the problems of punching or roll-cutting a plurality of lead-out tabs when designing multi-tabs for the existing cylindrical battery, complicated manufacturing process and high cost. Battery

Method used

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Embodiment Construction

[0024] In order to make the object, technical solution and advantages of the present invention clearer, the present invention 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 invention.

[0025] In order to illustrate the technical solutions of the present invention, specific examples are used below to illustrate.

[0026] like figure 1 and figure 2 shown, refer to Figure 3-Figure 6 , a cylindrical battery according to an embodiment of the present invention includes a pole piece 10 , a support column 2 and a junction plate, and the junction plate includes a positive electrode junction plate 31 and a negative electrode junction plate 32 . The pole piece 10 includes a positive current collector 11 and a negative current collector 12 , and both the positive current collector 11 an...

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Abstract

The invention provides a cylindrical battery which comprises a pole piece, a support column and confluence plates, and the confluence plates comprise a positive electrode confluence plate and / or a negative electrode confluence plate; the pole piece comprises a positive electrode current collector and a negative electrode current collector, and the positive electrode current collector and the negative electrode current collector are arranged on the periphery of the supporting column in a winding manner; the end part of the positive electrode current collector is arranged on the periphery of the positive electrode confluence plate, and a plurality of first welding points are arranged between the positive electrode current collector and the positive electrode confluence plate; and / or, the end part of the negative electrode current collector is arranged on the periphery of the negative electrode confluence plate in a sleeving manner, and a plurality of second welding points are arranged between the negative electrode current collector and the negative electrode confluence plate. The cylindrical battery provided by the invention solves problems that a plurality of lead-out tabs need to be punched or rolled in a multi-tab design of the existing cylindrical battery, the manufacturing process is complicated, and the cost is relatively high.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a cylindrical battery. Background technique [0002] 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. The internal structure of the traditional cylindrical lithium battery is as follows: firstly, the winding core is made, and the winding core is formed by winding a layer of positive pole piece, a layer of separator, and a layer of negative pole piece. Both the positive pole piece and the negative pole piece are made of conductive materials. The current collector (the current collector of the positive pole piece is called the positive pole current collector, and the current collector of the negative pole piece is called the negative pole current collector) and t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M50/533H01M50/536H01M50/538H01M10/052H01M10/0587
CPCH01M10/052H01M10/0587Y02P70/50Y02E60/10
Inventor 沈晞
Owner 深圳市懋略技术研究有限公司