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PCE
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DIFF Subgroup
H02J 7/52

for charge balancing, e.g. equalisation of charge between batteries

Introduced: January 2026

Full Title

Circuit arrangements for charging or discharging batteries or for supplying loads from batteries > acting upon multiple batteries simultaneously or sequentially > for charge balancing, e.g. equalisation of charge between batteries

IPC and CPC are identically structured here. All 2 subcodes exist in both systems.

IPC defines codes here since 2026.

Child Classifications

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  • H02J 7/54 Passive balancing, e.g. using resistors or parallel MOSFETs since 2026 IPC+CPC Available in IPC and CPC
  • H02J 7/56 Active balancing, e.g. using capacitor-based, inductor-based or DC-DC converters since 2026 IPC+CPC Available in IPC and CPC

Top Applicants

Top Applicants (IPC)

Class H02,2013–2023, worldwide · Source: EPO PATSTAT

  1. SGCC(STATE GRID CORPORATION OF CHINA) 54,496
  2. MITSUBISHI ELECTRIC CORPORATION JP 10,495
  3. TOYOTA MOTOR CORPORATION 9,464
  4. GUANGDONG POWER GRID CORPORATION 9,339
  5. ROBERT BOSCH DE 8,226
  6. SIEMENS DE 8,218
  7. DENSO CORPORATION 7,063
  8. MITSUBISHI ELECTRIC CORPORATION 6,619
  9. SAMSUNG ELECTRONICS COMPANY KR 5,826
  10. GREE ELECTRIC APPLIANCES 5,094

Top Applicants (CPC)

Class H02,2013–2023, worldwide · Source: EPO PATSTAT

  1. SGCC(STATE GRID CORPORATION OF CHINA) 24,515
  2. MITSUBISHI ELECTRIC CORPORATION JP 11,346
  3. SIEMENS DE 9,026
  4. ROBERT BOSCH DE 9,005
  5. SAMSUNG ELECTRONICS COMPANY KR 6,729
  6. GUANGDONG POWER GRID CORPORATION 5,740
  7. DENSO CORPORATION JP 5,077
  8. LG ELECTRONICS KR 5,041
  9. LG INNOTEK COMPANY KR 4,442
  10. TOYOTA MOTOR CORPORATION 4,349