High-powered lithium ferric phosphate dynamic battery, and preparation technique

A technology for lithium iron phosphate and power batteries, which is applied in high-power lithium iron phosphate power batteries and its manufacturing process belongs to the field of batteries, which can solve the problems of poor electrical conductivity and ion diffusion performance, low bulk density and tap density, and high battery current Discharge performance is poor and other problems, to achieve good electrochemical performance and processing performance, high-current discharge performance improvement, electrical conductivity and ion diffusion performance to improve the effect
CN1960040AInactive Publication Date: 2007-05-09GUANGZHOU GREAT POWER ENERGY & TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
GUANGZHOU GREAT POWER ENERGY & TECH CO LTD
Publication Date
2007-05-09
Estimated Expiration
Not applicable · inactive patent

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Abstract

The dynamic battery includes shell, positive pole piece, negative pole piece, diaphragm, and electrolyte. Positive pole piece / negative pole piece are composed of afflux bodies of positive / negative poles in same size, and active materials painted on the afflux bodies respectively. Ion doped lithium iron phosphate is adopted as positive pole material, and canting pulled aluminum mesh is as afflux body of positive pole. Carbon black, graphite, and Nano Al2O3 are selected for conduction agent. Crylic acid - styrene polymer, and crylic acid - silica polymer are chosen for bonding agent of positive pole material. The invention simplifies technical procedure, paints pole pieces easily, and increases following performances greatly: conductivity, ionic diffusion capability, discharging large current, as well as apparent density and packed density.
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Description

technical field

[0001] The high-power lithium iron phosphate power battery and its manufacturing process of the present invention belong to the field of batteries, in particular to a lithium-ion secondary battery that provides driving energy for small and medium-sized electric tools, household electronic appliances, electric bicycles, electric motorcycles and electric vehicles . Background technique

[0002] technical parameter Lead-acid batteries Nickel-cadmium batteries NiMH batteries Lithium Ion Battery Lithium cobaltate Lithium iron phosphate mass specific capacity Wh / Kg 30 45 60 110 80 volume specific energy Wh / l 86 129 202 250 220 Environmental adaptability pollute pollute pollution-free pollution-free pollution-free safe...

Claims

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