CN1819321A - Lithium ion battery with high multiplying factor

CN1819321A - Lithium ion battery with high multiplying factor

Invention (published application) | Inventor: Huang Zhengyao

This published invention increases lithium ion battery discharge from the usual 1-3C range up to 12-15C by selecting anode, cathode and additive materials and premixing active substance with conductive agent as dry powder. The electrode formulations are specified in mass percentages, giving a practical route to high-rate cells.

Ⅰ. Patent Information

Dany Huang is the English name of Huang Zhengyao.

Ⅱ. Technical Field (Application)

High-Rate / High-Power Cell Design (Battery Structure Design)

Ⅲ. Abstract

The invention uses the especially selected material as the material of anode, cathode and additive to increase the discharge current from 1-3C up to 12-15C. Wherein, said anode coating mixture is composed of 75-93% by weight active substance, 1-20% by weight conducting agent and 2-9% by weight adhesive. The active substance and the conducting agent are pre mixed by a specially mixing process of dry powder. The said cathode coating mixture is composed of 90-97% by weight active substance, 0-3% by weight conducting agent and 2-6% by weight adhesive, and its active substance and conducting agent are pre mixed by a specially mixing process of dry powder. On the surface of diaphragm, polymer viscosity particulates are coated. The electrolyte is a special electrolyte where a conducting agent is added. The ratio of capacitances under 5C, 7C, 10C, and 15C discharge scale factor to 1C capacitance can respectively reach 98%, 96%, 90%, and 86%.

Ⅳ. Images

Ⅴ. Technical Points

• The invention uses the especially selected material as the material of anode, cathode and additive to increase the discharge current from 1-3C up to 12-15C.
• The anode coating mixture is composed of 75-93% by weight active substance, 1-20% by weight conducting agent and 2-9% by weight adhesive.
• Active substance and conducting agent are premixed by a dry powder process before coating.
• The cathode coating mixture is composed of 90-97% by weight active substance, 0-3% by weight conducting agent and 2-6% by weight adhesive.

Ⅵ. Application Scenarios

High-rate and high-power cell design and safety structure development.

Ⅶ. Official Verification & Drawings

Google Patents Record | Official PDF (Drawings)

Ⅷ. FAQ

What discharge rates does it target?

The design raises discharge capability from 1-3C to 12-15C through electrode chemistry and mixing.

What is the key manufacturing step?

Active substance and conductive agent are premixed by a dry powder process before coating.

What is the legal status?

This is a published invention application; verify the current status on the official record.