BESS Fire Safety Patent Snapshot 2026
The battery energy storage system fire safety patent space is nascent but accelerating sharply, with 16 patent families on record and a fragmented field in which the top five filers hold 64% of the hundred largest filers’ combined output. The United States is the lead filing jurisdiction, and activity is dominated by battery-cell specialists rather than dedicated fire-suppression incumbents.
LG Energy Solution leads a fragmented, early-stage field
LG Energy Solution and three co-ranked applicants each hold 2 patent families, placing them jointly at the top of a shallow ranking — evidence that no single player has yet established a commanding portfolio in BESS fire safety.
The top five filers account for 64% of the ranked applicants visible in this query’ combined total, a high concentration ratio for such a small corpus, reflecting that only a handful of organizations have moved beyond single-family filings. The remaining ranked applicants each hold just 1 patent family.
| # | Applicant | Patent families | Share |
|---|---|---|---|
| 1 | LG Energy Solution Ltd. | 2 | |
| 2 | Redwood Materials Inc. | 2 | |
| 3 | GE Energy Power Conversion Technology Ltd. | 2 | |
| 4 | Wontec Worldwide Co., Ltd. | 2 | |
| 5 | Bazean Corp. | 1 | |
| 6 | Honeywell International Inc. | 1 | |
| 7 | M S Amperehour Solar Technology Pvt. Ltd. | 1 | |
| 8 | Honam University Industry-Academic Cooperation Foundation | 1 | |
| 9 | Korea Fire Industry Technology Institute | 1 | |
| 10 | Sichuan Hui’an Tairui Technology Co., Ltd. | 1 |
The leaders’ positions imply first-mover advantage is still available: even a modest targeted filing program could move a new entrant into the top tier. Existing leaders such as LG Energy Solution and GE Energy Power Conversion Technology bring battery-system depth, while entrants like Korea Fire Industry Technology Institute approach the problem from a fire-engineering angle.
Figures for 2025 and 2026 are understated due to publication lag and should be interpreted as a floor, not a ceiling. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
Filings are rising sharply; battery-cell IP dominates the technology mix
The annual filing trend and IPC composition together reveal a field that is growing from a very low base with a technology mix skewed heavily toward battery-cell engineering rather than fire-suppression systems.
Annual filing trend
Annual filings were effectively dormant from 2018 through 2021, restarted in 2022, and have climbed to reach 6 families recorded in 2025 — though this figure is understated by publication lag. The overall recent-window growth of 600% confirms a genuine acceleration from a small prior base rather than a mature-market plateau.
↗ Hover for values · click a bar to ask EurekaTechnology composition
H01M (Batteries, cells & fuel cells) is the visible IPC branch, reflecting that most filers address fire safety through battery-cell design and management rather than external suppression hardware. A62C (Fire-fighting) is the second branch, and several adjacent codes — including B60L, H02J, and A62D — appear at low counts, signalling that cross-domain integration with EVs, grid systems, and chemical protection remains sparse.
↗ Hover for values · click a bar to ask EurekaHighly cited patent families surfaced by the query
Citation-heavy patent families returned by the query. Use this section as citation context, not as a curated list of the most topic-specific patents.
Battery Energy Storage System for Powering an Elec…
A system for powering 100% of an oil and gas workover rig’s operations with a battery energy storage system (“BESS”). The system consists of three major interconnected components: a BESS, a power conversion system (“PCS”), and a workover rig. The power system is specifically designed for a retrofitted electro-mechanical workover rig (with either an… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Moving Transportation Vehicle Battery Fire Suppres… | 4 |
| 2 | Battery storage system with integrated inverter | 4 |
| 3 | System for managing a fire of battery energy stora… | 3 |
| 4 | Battery Energy Storage System for Powering an Elec… | 1 |
Ranked by total forward citations. Citation counts favour older and broadly cited patent families, and broad or adjacent patents may appear when they match the search scope. Treat this section as citation context, not as a curated list of the most topic-specific patents. Some patent titles may be shown in their original, non-English language where an accurate translation could not be guaranteed.
Assignee snapshot from the current evidence set
The applicants below are visible in this query result. Because the evidence set is relatively small, read this section as a directional snapshot rather than a full competitive ranking.
LG Energy Solution
LG Energy Solution holds 2 patent families and focuses its BESS fire safety work on battery-cell engineering (H01M 10), complemented by measurement and data-processing approaches (G01R 31, G06F 18). This positions the company as a cell-level safety specialist rather than a systems-level suppression filer. Momentum data does not flag LG Energy Solution as a recent new entrant, suggesting an established but modest presence.
families: 2Wontec Worldwide Co., Ltd.
Wontec Worldwide Co., Ltd. also holds 2 patent families and is flagged as a new entrant in the applicant momentum data. Its technology focus is concentrated entirely on active fire-fighting methods (A62C 3, A62C 35) and chemical protection (A62D 1), making it the field’s most dedicated fire-suppression specialist among the top-ranked filers. Its entry from a fire-engineering angle rather than a battery-manufacturing background represents a distinct competitive approach.
families: 2Frequently asked questions
The current corpus contains 16 patent families in scope. This is a nascent field, and filings for the most recent 18–24 months are understated due to publication lag, so the true total is higher than the current count reflects.
LG Energy Solution holds the top position with 2 patent families, tied with Redwood Materials Inc., GE Energy Power Conversion Technology Ltd., and Wontec Worldwide Co., Ltd. No single applicant has established a visible lead.
The United States leads with 5 patent records, followed by South Korea with 4, and Europe (EPO) and WIPO (PCT) each with 2. Australia, China, and India each have 1 patent record. China is notably sparse given its scale as a BESS deployment market.
H01M (Batteries, cells & fuel cells) is the visible IPC class, appearing in 14 patent records. This reflects that most filers address fire safety through battery-cell design and management rather than external suppression or detection hardware. A62C (Fire-fighting) is the second most common class with 8 records.
Yes. The lifecycle assessment classifies the field as Growth stage, with annual filings rising and a recent-window growth figure of 600% from a very small prior base. Filing activity was near zero from 2018 through 2021 before resuming in 2022 and accelerating through 2025.
The most-cited works include ‘Moving Transportation Vehicle Battery Fire Suppression’ (4 citations), ‘Battery storage system with integrated inverter’ (4 citations), ‘System for managing a fire of battery energy storage’ (3 citations), and ‘Battery Energy Storage System for Powering an Electric’ (1 citation). Patent numbers for these titles were not provided in the evidence dataset.
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Disclaimer. This page is generated from Patsnap Eureka data drawn from a limited snapshot of global patent and scientific-literature records, and is provided for general information and reference only.
Patent data carries inherent limitations: recent filings (typically the most recent 18–24 months) are under-counted due to standard publication lag; counts may be reported at either a patent-family or a patent-record basis and are not always directly comparable; classification, applicant-name, and citation data may contain errors, duplicates, or omissions; and the underlying search query defines and constrains the scope shown. As a result, the analysis may be incomplete or inaccurate and may not reflect the full technology landscape.
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