G01R 31/396
Acquisition or processing of data for testing or for monitoring individual cells
Official title: Acquisition or processing of data for testing or for monitoring individual cells or groups of cells within a battery
G01R31/396 (Acquisition or processing of data for testing or for monitoring individual cells) appears on 2,327 US grants and 3,337 published applications in this corpus.
Search patents in G01R- Granted patents
- 2,327
- Published applications
- 3,337
- Assignees
- 899
- Inventors
- 5,529
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 4 | 0 |
| 1983 | 1 | 0 |
| 1984 | 5 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 3 | 0 |
| 1991 | 2 | 0 |
| 1992 | 5 | 0 |
| 1993 | 3 | 0 |
| 1994 | 6 | 0 |
| 1995 | 2 | 0 |
| 1996 | 5 | 0 |
| 1997 | 12 | 0 |
| 1998 | 21 | 0 |
| 1999 | 10 | 0 |
| 2000 | 24 | 0 |
| 2001 | 24 | 8 |
| 2002 | 18 | 16 |
| 2003 | 21 | 17 |
| 2004 | 16 | 18 |
| 2005 | 10 | 19 |
| 2006 | 9 | 22 |
| 2007 | 10 | 34 |
| 2008 | 13 | 41 |
| 2009 | 30 | 58 |
| 2010 | 30 | 73 |
| 2011 | 36 | 97 |
| 2012 | 70 | 128 |
| 2013 | 67 | 130 |
| 2014 | 81 | 120 |
| 2015 | 90 | 112 |
| 2016 | 108 | 148 |
| 2017 | 111 | 135 |
| 2018 | 139 | 129 |
| 2019 | 128 | 171 |
| 2020 | 131 | 141 |
| 2021 | 151 | 194 |
| 2022 | 162 | 221 |
| 2023 | 165 | 298 |
| 2024 | 192 | 326 |
| 2025 | 218 | 360 |
| 2026 | 182 | 321 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Identifying a root cause of battery cell degradation in a battery pack6 Oct 2026US 12,752,664 B2GM Global Technology Operations LLC
- Cell voltage estimation method and battery system providing the same6 Oct 2026US 12,754,241 B2LG Energy Solution, Ltd.
- Battery system diagnostics using electrochemical impedance spectroscopy6 Oct 2026US 12,754,247 B2Caterpillar Inc.
- Cross spectral impedance assessment for cell qualification6 Oct 2026US 12,754,248 B2Dynexus Technology, Inc.
- Battery balancing apparatus using piezoelectric transformers and related device6 Oct 2026US 12,754,249 B2Huawei Digital Power Technologies Co., Ltd.
- Determination of a battery capability associated with a safety function8 Oct 2026US 2026/0307492 A1CPS Technology Holdings LLC
- Wireless battery management system having a power redundancy structure and a method for operating the same8 Oct 2026US 2026/0307508 A1Hyundai Motor Company
- Apparatus and method for measuring electrochemical impedance spectroscopy8 Oct 2026US 2026/0309659 A1SK On Co., Ltd.
- Systems and methods for cell-based modeling performance of a battery pack8 Oct 2026US 2026/0309786 A1
- Battery management system and operation method therefor8 Oct 2026US 2026/0309795 A1Hyundai Motor Company
Most cited
By later US patents
- Battery, battery assembly, and user equipment1,017US 9,461,340 B2Huawei Device Co., Ltd. · 2016
- Battery system and method for system state of charge determination988US 9,030,169 B2Robert Bosch GmbH · 2015
- On-line battery management and monitoring system and method463US 6,031,354 AAIMS Systems, Inc. · 2000
- Method and apparatus for monitoring fuel cell performance359US 5,170,124 AMinister of National Defence of Her Majesty's Canadian Government · 1992
- Apparatus and method for measuring battery condition276US 4,697,134 ACommonwealth Edison Company · 1987