Cylindrical lithium ion battery and central pin thereof

A lithium-ion battery, cylindrical technology, applied in the direction of secondary batteries, secondary battery manufacturing, battery pack components, etc., can solve the problem that high-pressure gas cannot quickly flow to the explosion-proof line, the internal temperature of the battery is unbalanced, and the air flow resistance is large, etc. problems, to achieve uniform temperature inside and outside the battery, to avoid explosion, and to achieve the effect of strong heat absorption capacity

Inactive Publication Date: 2019-06-28
SUZHOU ANKAO ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in practical applications, when an abnormality occurs somewhere inside the battery, causing a large amount of gas to be generated rapidly and the local air pressure to rise rapidly, if the airflow blockage occurs inside the battery or the airflow resistance inside the battery is large, the aforementioned abnormality will be caused. The high-pressure gas generated at the site cannot quickly flow to the explosion-proof line or the position of the pressure relief valve, and there is still a risk of explosion
[0006] For the heat dissipation problem of cylindrical lithium-ion batteries, the existing technology is to use the metal shell of the battery to dissipate heat into the air, so as to reduce the temperature inside the battery cell during the use of the battery, but relying solely on the heat dissipation of the metal shell of the battery causes the internal temperature of the battery to be unbalanced Phenomenon, that is, the closer the battery is to the center of the core, the higher the temperature

Method used

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  • Cylindrical lithium ion battery and central pin thereof
  • Cylindrical lithium ion battery and central pin thereof
  • Cylindrical lithium ion battery and central pin thereof

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Embodiment Construction

[0034] The present application will be described in further detail below through specific embodiments in conjunction with the accompanying drawings. The present application can be implemented in many different forms, and is not limited to the implementation manner described in this embodiment. The purpose of providing the following specific embodiments is to facilitate a clearer and more thorough understanding of the disclosure of the present application, wherein the words indicating orientation such as up, down, left, and right are only for the positions of the structures shown in the corresponding drawings.

[0035] However, those skilled in the art may recognize that description of one or more of the specific details may be omitted, or other methods, components or materials may also be used. In some instances, some implementations were not described or described in detail.

[0036] In addition, the technical features and technical solutions described herein can also be com...

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Abstract

The invention discloses a cylindrical lithium ion battery and a central pin thereof. Pressure release grooves extending along the length direction of the central pin are arranged in the outer periphery of the central pin. The safe explosion-proof performance of the battery can be improved.

Description

technical field [0001] The present application relates to the field of batteries, in particular to a central needle of a cylindrical lithium-ion battery and the cylindrical lithium-ion battery. Background technique [0002] Driven by the dual pressure of emission regulations and energy consumption, "electrification" has become an undisputed inevitable trend in the global automobile industry. At the same time, this also brings new development opportunities under the background of energy transformation to China's auto industry. However, to this day, the domestic new energy vehicle industry is still in the stage of continuous optimization and exploration. [0003] From a technical point of view, lithium-ion batteries are the most suitable energy source to replace gasoline at this stage. The biggest difference between new energy vehicles and traditional vehicles lies in the innovation of the power system. The main reason is that the requirements for the safety performance of l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/12H01M10/613H01M10/617H01M10/625H01M10/643H01M10/654H01M10/655H01M10/659H01M10/0587H01M10/04H01M10/0525
CPCY02E60/10Y02P70/50
Inventor 许玉林王爱淑娄豫皖龚晓冬李佳旭印杏莲
Owner SUZHOU ANKAO ENERGY
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