G01R 31/382
Arrangements for monitoring battery or accumulator variables
Official title: Arrangements for monitoring battery or accumulator variables, e.g. SoC
G01R31/382 (Arrangements for monitoring battery or accumulator variables) appears on 5,461 US grants and 7,338 published applications in this corpus.
Search patents in G01R- Granted patents
- 5,461
- Published applications
- 7,338
- Assignees
- 1,774
- Inventors
- 11,525
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 6 | 0 |
| 1978 | 4 | 0 |
| 1979 | 5 | 0 |
| 1980 | 1 | 0 |
| 1981 | 11 | 0 |
| 1982 | 4 | 0 |
| 1983 | 8 | 0 |
| 1984 | 5 | 0 |
| 1985 | 4 | 0 |
| 1986 | 6 | 0 |
| 1987 | 7 | 0 |
| 1988 | 3 | 0 |
| 1989 | 6 | 0 |
| 1990 | 11 | 0 |
| 1991 | 7 | 0 |
| 1992 | 12 | 0 |
| 1993 | 10 | 0 |
| 1994 | 30 | 0 |
| 1995 | 21 | 0 |
| 1996 | 14 | 0 |
| 1997 | 46 | 0 |
| 1998 | 41 | 0 |
| 1999 | 29 | 0 |
| 2000 | 44 | 0 |
| 2001 | 52 | 15 |
| 2002 | 54 | 34 |
| 2003 | 38 | 51 |
| 2004 | 34 | 48 |
| 2005 | 36 | 55 |
| 2006 | 29 | 67 |
| 2007 | 25 | 79 |
| 2008 | 46 | 79 |
| 2009 | 67 | 102 |
| 2010 | 67 | 132 |
| 2011 | 74 | 126 |
| 2012 | 107 | 188 |
| 2013 | 102 | 281 |
| 2014 | 144 | 347 |
| 2015 | 200 | 390 |
| 2016 | 265 | 336 |
| 2017 | 319 | 298 |
| 2018 | 292 | 361 |
| 2019 | 363 | 447 |
| 2020 | 361 | 436 |
| 2021 | 423 | 462 |
| 2022 | 422 | 553 |
| 2023 | 391 | 614 |
| 2024 | 429 | 618 |
| 2025 | 434 | 650 |
| 2026 | 349 | 569 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Identifying a root cause of battery cell degradation in a battery pack6 Oct 2026US 12,752,664 B2GM Global Technology Operations LLC
- Charge/discharge inspection device and charge/discharge inspection equipment6 Oct 2026US 12,754,239 B2Nippon Steel Texeng. Co., Ltd.
- Method and system utilizing pulse voltammetry for testing battery6 Oct 2026US 12,754,240 B2CFD Research Corporation
- Cell voltage estimation method and battery system providing the same6 Oct 2026US 12,754,241 B2LG Energy Solution, Ltd.
- Power bank having function for providing rechargeable range of battery pack, battery pack charging system comprising same, and method therefor6 Oct 2026US 12,754,242 B2LG Energy Solution, Ltd.
- Detection and remediation of liquid intrusion in vehicle battery packs8 Oct 2026US 2026/0307491 A1GM Global Technology Operations LLC
- Wireless battery management system having a power redundancy structure and a method for operating the same8 Oct 2026US 2026/0307508 A1Hyundai Motor Company
- Relay Diagnostic Circuit and Battery Device Comprising the Same8 Oct 2026US 2026/0309780 A1LG Energy Solution, Ltd.
- Battery states co-estimation technique using dual square root unscented kalman filter8 Oct 2026US 2026/0309784 A1Smartkosh Technologies Private Limited
- Method for Estimating State of Rechargeable Battery8 Oct 2026US 2026/0309785 A1Toyota Battery Co., Ltd.
Most cited
By later US patents
- Smart battery power availability feature based on battery-specific characteristics1,241US 5,541,489 AIntel Corporation · 1996
- Mechanisms for compensating for battery pack failure in powered surgical instruments1,201US 10,292,704 B2Ethicon, Inc. · 2019
- Surgical instrument battery pack with voltage polling1,192US 9,974,539 B2Ethicon, Inc. · 2018
- Battery capacity estimating system and method1,065US 5,404,106 AFuji Jukogyo Kabushiki Kaisha · 1995
- Battery capacity calculation method1,051US 5,847,566 ASeiko Epson Corporation · 1998