H02J 7/56
Active balancing
Official title: Active balancing, e.g. using capacitor-based, inductor-based or DC-DC converters
H02J7/56 (Active balancing) appears on 1,273 US grants and 1,728 published applications in this corpus.
Search patents in H02J- Granted patents
- 1,273
- Published applications
- 1,728
- Assignees
- 771
- Inventors
- 3,111
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 10 | 0 |
| 1997 | 17 | 0 |
| 1998 | 14 | 0 |
| 1999 | 10 | 0 |
| 2000 | 18 | 0 |
| 2001 | 13 | 1 |
| 2002 | 10 | 7 |
| 2003 | 11 | 9 |
| 2004 | 8 | 23 |
| 2005 | 6 | 31 |
| 2006 | 10 | 25 |
| 2007 | 13 | 19 |
| 2008 | 17 | 23 |
| 2009 | 24 | 44 |
| 2010 | 27 | 41 |
| 2011 | 22 | 51 |
| 2012 | 44 | 58 |
| 2013 | 29 | 81 |
| 2014 | 32 | 84 |
| 2015 | 71 | 77 |
| 2016 | 65 | 82 |
| 2017 | 69 | 100 |
| 2018 | 77 | 86 |
| 2019 | 78 | 105 |
| 2020 | 96 | 101 |
| 2021 | 94 | 105 |
| 2022 | 75 | 130 |
| 2023 | 78 | 125 |
| 2024 | 90 | 138 |
| 2025 | 79 | 108 |
| 2026 | 47 | 74 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Battery balancing apparatus using piezoelectric transformers and related device6 Oct 2026US 12,754,249 B2Huawei Digital Power Technologies Co., Ltd.
- Electronic device with hybrid power source and method for hybrid power supply6 Oct 2026US 12,755,115 B2Getac Technology Corporation
- Method for operating a switching arrangement6 Oct 2026US 12,756,206 B2Volvo Truck Corporation
- Battery management apparatus and operating method thereof6 Oct 2026US 12,756,207 B2LG Energy Solution, Ltd.
- Battery system6 Oct 2026US 12,756,208 B2LG Energy Solution, Ltd.
- Battery management system and operation method therefor8 Oct 2026US 2026/0309795 A1Hyundai Motor Company
- Power converter1 Oct 2026US 2026/0302806 A1APh ePower Co., Ltd.
- Apparatus and system for power conversion and method for operating the apparatus24 Sep 2026US 2026/0291265 A1Hitachi Energy Ltd
- Abnormality detection device and battery system17 Sep 2026US 2026/0276718 A1Panasonic Intellectual Property Management Co., Ltd.
- Systems and methods of adaptive dispatch and dc balancing in battery energy storage systems17 Sep 2026US 2026/0280312 A1Fluence Energy, LLC
Most cited
By later US patents
- Distributed battery power electronics architecture and control1,032US 9,368,991 B2The Board of Trustees of The University of Alabama · 2016
- State of charge indicator for a battery charger837US 8,796,995 B2Black & Decker Inc. · 2014
- Electrical system control for a vehicle247US 7,352,154 B2Vanner, Inc. · 2008
- Voltage sensor for detecting cell voltages235US 5,652,501 AUnitrode Corporation · 1997
- Battery controller and method for controlling a battery227US 7,282,814 B2Electrovaya Inc. · 2007