PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY

Introduced: September 1968

Description

H01M encompasses electrochemical energy conversion devices and processes that directly transform chemical energy into electrical energy. This subclass covers batteries, fuel cells, supercapacitors, and related electrochemical systems across all chemistries and configurations. It includes cell and battery design, electrode materials, electrolytes, manufacturing processes, performance testing, and safety features for primary, secondary (rechargeable), and specialized energy storage applications.

Of 12 combined children, 8 exist in both systems.

4 codes are CPC-only extensions.

Note: 4 CPC extensions are marked as secondary classification only.

2 shared codes have differing titles between IPC and CPC.

Child Classifications

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H01M 10/00 Secondary cells; Manufacture thereof since 1974 IPC+CPC Available in IPC and CPC
H01M 12/00 Hybrid cells; Manufacture thereof (hybrid capacitors H01G11/00) since 1974 IPC+CPC Available in IPC and CPC
H01M 14/00 Electrochemical current or voltage generators not provided for in groups H01M6/00 - H01M12/00; Manufacture thereof since 1974 +1 CPC IPC+CPC Available in IPC and CPC
H01M 16/00 Structural combinations of different types of electrochemical generators since 1974 +1 CPC IPC+CPC Available in IPC and CPC
H01M 2200/00 Safety devices for primary or secondary batteries 2nd only +3 CPC CPC only CPC only
H01M 2220/00 Batteries for particular applications 2nd only +3 CPC CPC only CPC only
H01M 2250/00 Fuel cells for particular applications; Specific features of fuel cell system 2nd only +4 CPC CPC only CPC only
H01M 2300/00 Electrolytes 2nd only +4 CPC CPC only CPC only
H01M 4/00 Electrodes since 1974 IPC+CPC Available in IPC and CPC
H01M 50/00 Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells since 2021 IPC+CPC Available in IPC and CPC
H01M 6/00 Primary cells; Manufacture thereof since 1974 +1 CPC IPC+CPC Available in IPC and CPC
H01M 8/00 Fuel cells; Manufacture thereof since 1974 +1 CPC IPC+CPC Available in IPC and CPC