Lithium ion battery suitable for low-temperature environment

A lithium-ion battery, low-temperature environment technology, applied in the field of electrochemistry, can solve problems such as reduced discharge performance, and achieve the effects of improved discharge efficiency and output power, low cost, and reasonable design

Active Publication Date: 2008-06-11
WANXIANG 123 CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention mainly solves the technical problems existing in the prior art such as the reduction of discharge performance in low-temperature environments; it provides a device

Method used

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  • Lithium ion battery suitable for low-temperature environment
  • Lithium ion battery suitable for low-temperature environment
  • Lithium ion battery suitable for low-temperature environment

Examples

Experimental program
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Effect test

Embodiment 1

[0025] exist figure 1 Among them, the battery cells 6 are connected in parallel through the transition plate 5, and the transition plate 5 is connected to the pole on the case cover through the lead wire. The heat conduction component 9 has a layered structure, the electric core 6 is inserted into the heat conduction component 9 in turn, the heat conduction component 9 has grooves on both sides, the heating component 8 is inserted into the groove, the heat conduction component 9 is wrapped with the heat insulation layer 7, and then the whole is put into the casing 10 middle. After the two heating components 8 are connected in parallel, they are connected in series with the temperature control switch 4 and the control circuit 3, and then connected with the battery pole 1 to be powered by the battery. When the internal temperature of the battery is lower than 0°C, the temperature control switch 4 is turned on, the heating element 8 starts to generate heat, and the internal temp...

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PUM

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Abstract

The invention relates to a li-ion battery and a method for manufacturing the same and belongs to the electrochemical technical field, in particular to a li-ion battery used in low temperature environment. The invention mainly aims to the technical problem of lower discharge performance in a low temperature environment of the prior art and to provide a li-ion battery used in a low temperature environment which is capable of maintaining normal discharge in a low temperature environment and is reasonable in design, simple in structure and adaptable to low temperature environment. The technical proposal of the invention is that: the li-ion battery comprises a battery shell, a thermal insulating layer closely attached to the battery shell, a battery cell arrange inside the battery shell, a control component consisting of a temperature controlled switch and a control circuit, and a heat supply component consisting of a heating component and a heat conducting component.

Description

technical field [0001] The invention belongs to a lithium ion battery and a manufacturing method thereof in the field of electrochemistry, and in particular relates to a lithium ion battery suitable for a low-temperature environment. Background technique [0002] In a lithium-ion battery in a low-temperature environment below 0°C, the lithium ion conductivity of the electrolyte and SEI film decreases, the lithium ion diffusion rate of the negative electrode slows down, the electrochemical polarization increases, and the interface charge between the positive and negative electrodes and the electrolyte The transmission impedance increases, and the above factors lead to a decrease in the battery discharge efficiency, especially the high current discharge efficiency will be greatly reduced. [0003] With the current technical level, the low-current discharge capacity of the battery at -40°C is less than 50% of the theoretical capacity, and the high-current can hardly work. Alth...

Claims

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Application Information

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IPC IPC(8): H01M10/50H01M2/00H01M10/40H01M6/14H01M10/0525H01M10/058H01M10/615H01M10/657H01M50/10H01M50/14
CPCY02E60/122Y02E60/10Y02P70/50
Inventor 刘昊李建林王清泉邢彩虹郑利峰邓龙征
Owner WANXIANG 123 CO LTD
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