Cylindrical battery

A cylindrical battery and pole technology, applied in the manufacture of cylindrical shell batteries/batteries, secondary batteries, secondary batteries, etc., can solve problems such as poor heat dissipation effect, improve heat dissipation efficiency, avoid heat accumulation, and avoid temperature uneven distribution

Pending Publication Date: 2021-06-25
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

[0003] The technical problem to be solved by the present invention is to provide a cylindrical battery for the problem of poor heat dissipation effect of the existing cylindrical battery

Method used

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  • Cylindrical battery

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Embodiment Construction

[0015] 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.

[0016] In order to illustrate the technical solutions of the present invention, specific examples are used below to illustrate.

[0017] Such as figure 1 As shown, a cylindrical battery according to an embodiment of the present invention includes a pole 1, a pole piece 2, a hollow tube 3 and a confluence plate 4, the two ends of the hollow tube 3 are provided with the confluence plate 4, The pole piece 2 is wound around the outer periphery of the hollow tube 3 , and the pole piece 2 is electrically connected to the bus plate 4 and conducts heat. The side of the collector plate 4 away from the hol...

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Abstract

The invention provides a cylindrical battery, which comprises a pole, a pole piece, a hollow pipe and confluence plates, wherein the confluence plates are arranged at the two ends of the hollow pipe, the pole piece is wound on the periphery of the hollow pipe, and the pole piece is electrically connected with the confluence plates and is in heat conduction with the confluence plates; one surface, far away from the hollow pipe, of the confluence plate is connected with the pole, and heat conduction is performed between the confluence plate and the pole. The cylindrical battery provided by the invention solves the problem of poor heat dissipation effect of the existing cylindrical battery.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to a cylindrical battery. Background technique [0002] The heat transfer path in a cylindrical battery is usually heat transfer from the inner pole core to the metal case, and then the heat is dissipated to the outside by the heat sink close to the metal case. Since the pole core is wound by the positive and negative electrode sheets and the separator, the thermal conductivity of the positive and negative electrode material layers and the separator layer are both low, resulting in poor overall heat transfer efficiency, and the cylindrical battery case has a small surface area, resulting in The heat inside the cylindrical battery pole core, especially near the central area, is difficult to dissipate smoothly, resulting in heat accumulation, high core temperature, and uneven temperature distribution throughout the pole core, which seriously affects the cycle performance and service...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/04H01M10/613H01M10/643H01M10/654H01M10/6553
CPCH01M10/0422H01M10/0431H01M10/613H01M10/643H01M10/654H01M10/6553Y02E60/10Y02P70/50
Inventor 沈晞
Owner 深圳市懋略技术研究有限公司
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