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Hollow tube for cylindrical battery and cylindrical battery

A technology of cylindrical batteries and hollow tubes, which is applied in the direction of secondary batteries, lithium batteries, battery pack components, etc., can solve the problems of cell layer interface damage, cell layer volume expansion, cell layer volume shrinkage, etc., to achieve Prevent interface damage, reduce the problem of material drop, and reduce the effect of extrusion

Pending Publication Date: 2021-06-25
深圳市懋略技术研究有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is: in view of the existing cylindrical battery in the charge-discharge cycle, the volume of the cell layer expands during charging, and the volume of the cell layer shrinks during discharge, resulting in interface damage caused by the volume change of the cell layer. A hollow tube for cylindrical batteries

Method used

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  • Hollow tube for cylindrical battery and cylindrical battery
  • Hollow tube for cylindrical battery and cylindrical battery
  • Hollow tube for cylindrical battery and cylindrical battery

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Embodiment Construction

[0019] 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.

[0020] In order to illustrate the technical solutions of the present invention, specific examples are used below to illustrate.

[0021] Such as Figure 1 to Figure 3 As shown, a hollow tube for a cylindrical battery according to an embodiment of the present invention, the cylindrical battery includes a cell layer, the hollow tube includes a support tube 1 and an elastic structure layer 2, and the support tube is two A hollow tubular structure with an open end. The elastic structure layer 2 is arranged between the support tube 1 and the cell layer. The elastic structure layer 2 is compressed by ...

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Abstract

The invention provides a hollow tube for a cylindrical battery and the cylindrical battery. The cylindrical battery comprises a battery cell layer, the hollow tube comprises a supporting tube and an elastic structure layer, and the supporting tube is of a hollow tubular structure with two open ends. The elastic structure layer is arranged between the supporting tube and the battery cell layer. And the elastic structure layer is extruded by the battery cell layer to generate compression deformation along the radial direction of the supporting tube. According to the hollow tube for the cylindrical battery, the problems that the volume of the battery cell layer is expanded during charging, the volume of the battery cell layer is shrunk during discharging and the volume of the battery cell layer is changed to cause interface damage in the charge-discharge cycle of the existing cylindrical battery are solved.

Description

technical field [0001] The invention relates to the field of battery technology, in particular to a hollow tube for a cylindrical battery and the cylindrical battery. Background technique [0002] Cylindrical batteries, as batteries with intrinsically safe properties, use the chemical inertness and high-strength mechanical characteristics of solid electrolytes to inhibit the occurrence of side reactions inside the battery, and at the same time, inhibit the formation of lithium dendrites, thereby optimizing and improving the safety of lithium batteries , providing a solution for the application of Li metal in Li-ion batteries. However, during the charge-discharge cycle of a cylindrical battery, due to the volume change of the positive and negative electrode materials, there will be a "breathing effect" of the internal pressure of the cell, that is, the volume expands during charging and the volume shrinks during discharging. Due to the strong confinement effect of the shell ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M50/242H01M10/052H01M10/0587
CPCH01M10/052H01M10/0587Y02P70/50Y02E60/10
Inventor 沈晞
Owner 深圳市懋略技术研究有限公司
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