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Lithium battery

A lithium battery and cell technology, applied in secondary batteries, circuits, electrical components, etc., to achieve the effect of increasing battery life, improving safety, and improving lifespan

Pending Publication Date: 2018-09-07
长沙聚能充新能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A sensor is set between the battery cell and the casing to monitor the pressure on the side wall of the battery due to the deformation of the temperature change. However, there will be some lag between this and the actual change of the heat source of the battery cell.

Method used

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Embodiment Construction

[0023] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0024] Such as figure 1 , 2 As shown in , 3, a lithium battery includes a cell 1 and a casing 2, the cell 1 is arranged in the casing 2, the cell 1 includes a positive electrode sheet 3, a negative electrode sheet 4 and a diaphragm 5, and the diaphragm 5 is wound in a Z shape The positive electrode piece 3 and the negative electrode piece 4 are insulated and separated by means of insulation. The positive and negative electrode pieces are provided with tabs. The shell 2 includes a shell top and a shell, and the top of the shell is provided with a pole and an interface hole. Such as figure 1 A pressure sensor 6 is arranged between the positive plate 3 of the battery cell 1 and the diaphragm 5 , and one end of the pressure sensor 6 extends out of the battery and can be connected to an external module.

[0025] The present invention is also characterized in th...

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Abstract

The invention provides a lithium battery. The lithium battery comprises an electrical core and a shell, wherein the electrical core is arranged in the shell, comprises a positive plate, a negative plate and a diaphragm, and is characterized in that a pressure transducer is arranged between the positive plate or / and negative plate and the diaphragm. Various pressure transducers for monitoring pressure changes are available; however, transducer for detecting the inner pressure of the battery should have a tiny size; and in measurement of high-fidelity transfer pressure, the pressure transducer is tightly pasted with the pole plates in the battery and has no influence on electrochemical reactions in the battery.

Description

(1) Technical field [0001] The invention relates to a lithium battery, in particular to a lithium battery with a built-in pressure sensor. (2) Background technology [0002] Lithium batteries have the advantages of high voltage, high specific energy, many cycle times, and long storage time. They are not only widely used in portable electronic devices (such as mobile phones, digital cameras, and laptops), but also widely used in electric vehicles, In terms of large and medium-sized electric equipment such as electric bicycles and electric tools, the performance requirements of lithium-ion batteries are getting higher and higher. The internal structure of a lithium battery is composed of positive and negative electrode sheets and a diaphragm. The battery will generate a lot of heat during use, which will affect the cycle life and safety of the battery, especially for large-capacity batteries. A large amount of heat will be generated inside the battery. The heat will cause the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/48H01M10/0525
CPCH01M10/0525H01M10/48Y02E60/10
Inventor 邱伯谦
Owner 长沙聚能充新能源有限公司
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