Long-circulation high-safety square ternary polymer lithium ion power battery

A ternary polymer, high-safety technology, used in batteries, secondary batteries, battery pack components, etc., can solve the problems of poor rate performance, short service life, poor safety, etc., to improve production efficiency and temperature changes. Not obvious, the effect of improving safety performance

Inactive Publication Date: 2016-03-16
SHANDONG GOLDENCELL ELECTRONICS TECH
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  • Abstract
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  • Application Information

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Problems solved by technology

[0007] The invention discloses a long-cycle high-safety square ternary polymer lithium-ion power battery and a manufacturing method thereof, aiming at overcoming the shortcomings of short service life, poor rate performance and poor safety of lithium-ion batteries applied to electric vehicles.

Method used

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  • Long-circulation high-safety square ternary polymer lithium ion power battery

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Embodiment

[0034] A long-cycle high-safety square ternary polymer lithium-ion power battery, including a positive electrode, a negative electrode, a 20 μm thick separator, a lithium-ion electrolyte, and an aluminum-plastic film case, wherein the positive electrode is composed of a positive electrode active material, a binder, a conductive The positive electrode slurry is composed of 95wt% nickel cobalt lithium manganese oxide material as the positive electrode active material; 3.0wt% polyvinylidene fluoride as the binder; 1.0wt% conductive Carbon black and 1.0wt% conductive graphite; the positive electrode current collector adopts 16 μm thick aluminum foil; the negative electrode is composed of negative electrode material, conductive agent, thickener, binder and negative electrode current collector, and the ratio of negative electrode slurry is: the negative electrode material uses 95wt% artificial graphite; 1.0wt% conductive carbon black as the conductive agent; 1.5wt% sodium carboxymeth...

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Abstract

The invention relates to a long-circulation high-safety square ternary polymer lithium ion power battery. According to the long-circulation high-safety square ternary polymer lithium ion power battery, a structure that a lug is formed at one side of a conventional battery is improved into a structure that lugs are formed in different directions at both sides of the battery; and by design of the positions of the lugs, a capacity retention ratio and heat dissipation of the battery are improved, so that temperature variation in the discharging process of the battery is not obvious, the short circuit and micro short circuit phenomena of the battery are greatly reduced, and safety performance of the battery is greatly improved. Moreover, according to the long-circulation high-safety square ternary polymer lithium ion power battery, convenience is also provided for subsequent serial and parallel connection of the battery and production efficiency of a battery PACK is greatly improved.

Description

technical field [0001] The invention relates to a lithium-ion power battery, in particular to a long-cycle high-safety square ternary polymer lithium-ion power battery. Background technique [0002] With the strengthening of people's awareness of environmental protection, the environmental pollution and global warming caused by automobile exhaust have attracted widespread attention. The energy crisis brought about by the world, the research, development and industrialization of energy-saving and environmentally friendly electric vehicles have become a concern of the world. However, the biggest bottleneck restricting the development of electric vehicles is the safety and life of power batteries. Lithium-ion batteries are recognized as the power source of electric vehicles due to their high energy, high power, long life, good safety, small self-discharge, and environmental friendliness. Therefore, improving the weight-specific energy, volume-specific power, safety and servic...

Claims

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Application Information

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IPC IPC(8): H01M10/0525H01M2/26H01M10/058H01M50/536
CPCH01M10/0525H01M10/058H01M2220/20H01M50/531Y02E60/10Y02P70/50
Inventor 关成善宗继月张敬捧邵长旺
Owner SHANDONG GOLDENCELL ELECTRONICS TECH
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