Proposal for the utilization of KRI’s technologies (registered patents)

We propose the utilization of KRI’s registered patents for the development of technologies associated with large lithium ion batteries and the implementation of contract research
based on these patented technologies.

Based on original low-profile hard case related technologies, KRI has built technologies for the structural design of batteries, current collection methods, safety mechanisms and cost reduction for the future development of large lithium ion batteries (in terms of energy density, safety, reliability, manufacturing process and costs). We will further improve our technologies (registered patents) in every element technology field.

Examples of KRI’s technologies associated with large lithium ion batteries
(26 registered patents in total)

WO/99/60652:

Low-profile hard case and slim lithium ion battery (heat radiation property, reliability and safety), energy not less than 30 Wh, flattened shape with thickness less than 12 mm, exterior thickness 0.2 to 1 mm

Patent No. 4009802:

Decompression sealing that can be used for hard case and liquid type batteries (no restraint type, exterior surface heat radiation)

Patent No. 4601109:

4-terminal structure for low-profile hard case type batteries (for high current and safety)

Patent No. 4348492:

Low pressure safety valve operational at pressures not more than 0.1 MPa (safety and quick radiation of internally built-up heat)

Patent No. 4420612:

NMC type active material and electrical conducting material (long-term reliability and safety)

Patent No. 4085224:

Positive-negative electrode capacity balance and usage range control (high capacity, long-term cycle characteristics)

Patent No. 4594478:

Meltdown control via heat resistant separator (high safety)

Patent No. 4990241:

Elastic separator and double layer separator (uniformity of electrode interface reaction and long-term reliability)

Patent No. 4424919:

NMC series positive electrode, coated black lead series negative electrode and electrolyte solution composition for batteries with a specific flattened structure.

Patent No. 4526718:

Battery and capacitor compositions and control methods (for high current and long-term reliability)

Patent No. 4594540:

Charge-discharge control of electrical energy storage system and use voltage range (long-term cycle characteristics)

Patent No. 4117435:

Electrical energy storage module structure, heat radiation property during normal use and measures against abnormalities (long-term reliability and safety)