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Lithium ion power low temperature cell

A power battery and lithium-ion technology, which is applied in the field of lithium-ion power low-temperature batteries, can solve problems such as inability to discharge, short discharge time, and affecting the use of electrical appliances, and achieve stable product performance, high-power discharge, and good safety.

Active Publication Date: 2009-12-30
湖北中聚能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conventional products can basically satisfy the discharge in the environment of -20-60°C, but when discharged at a temperature lower than -20°C, the discharge time will be short or the discharge will not be possible, which will seriously affect the use of electrical appliances

Method used

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Embodiment Construction

[0014] The implementation of the present invention will be described in detail below in conjunction with the accompanying drawings, but they do not constitute a limitation to the present invention, and are only examples. At the same time, the advantages of the present invention will become clearer and easier to understand.

[0015] Referring to the accompanying drawings, it can be seen that the lithium-ion low-temperature power battery of the present invention includes a tab 1, a positive electrode sheet 2, a negative electrode sheet 4, a diaphragm 3, an electrolyte 6, and an aluminum-plastic film 5,

[0016] In the positive electrode sheet: the thickness of the positive electrode sheet is 80-130um, the positive electrode active material is lithium manganate or lithium iron phosphate, the binder is polyvinylidene fluoride; the conductive agent is acetylene black; the positive electrode active material: binder: conductive agent The weight percentage is 80-90%: 5-10%: 5-10%; the...

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Abstract

A lithium ion power low temperature cell comprises a tab (1), an anode plate (2), a cathode plate (4), a diaphragm (3), electrolyte (6) and an aluminum plastic die (5), and the invention adopts special proportioning and structure in the anode plate, the cathode plate and the electrolyte. The lithium ion power low temperature cell of the invention overcomes the defects that conventional products only can discharge under the environment of minus 20 DEG C to 60 DEG C, and has short discharging time or incapability of discharging under the condition of below minus 20 DEG C; the invention features stable performance, high energy of volume ratio, good safety and can satisfy high power discharging; the low temperature environment can satisfy normal work under the condition of minus 40 DEG C, and can discharge more than or equal to 70% of initial volume.

Description

technical field [0001] The invention relates to a lithium-ion power low-temperature battery. Background technique [0002] In today's world, due to the requirements of environmental protection and energy saving, it is more and more urgent to seek high-efficiency and environmentally friendly energy sources. Finding new power sources has become an inevitable trend of social development and scientific progress. The currently used power batteries are mainly lead-acid batteries, nickel-metal hydride batteries, and lithium-ion batteries. Lithium-ion batteries are ideal power sources for electric vehicles because of their high specific power and long cycle life. [0003] Lithium-ion batteries in the prior art widely use positive and negative electrode films and separators, are assembled by winding and stacking processes, and then add liquid electrolyte. The produced battery has the characteristics of high energy density, high output voltage, small self-discharge, and excellent cy...

Claims

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Application Information

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IPC IPC(8): H01M10/40H01M10/38
CPCY02E60/12Y02E60/10Y02P70/50
Inventor 李海军李锐婷张伟黄永杰陈旭恒
Owner 湖北中聚能源有限公司
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