Grid-Scale BESS Cell Chemistry Patent Snapshot 2026
The grid-scale BESS cell chemistry patent corpus is highly concentrated, with a small group of academic and industrial filers dominating a nascent but growing field. Activity has expanded on a multi-year basis, though annual volume has eased from its 2022 peak and recent years remain understated by publication lag.
Shanghai Institute of Technology leads a highly concentrated, early-stage field
Shanghai Institute of Technology holds the top position in this corpus, the only applicant with more than one patent family. The top five filers account for 67% of the combined output of the ranked applicants visible in this query, signalling a tightly held competitive space.
The tier gap between the leader and all challengers is narrow in absolute terms but stark in relative terms: every applicant outside first place holds exactly one patent family. This means the field has no established second tier — it is a loose cluster of single-family entrants beneath one modestly stronger incumbent.
| # | Applicant | Patent families | Share |
|---|---|---|---|
| 1 | Shanghai Institute of Technology | 2 | |
| 2 | Volvo Truck Corporation | 1 | |
| 3 | Wenzhou Natech New Energy Technology Co., Ltd. | 1 | |
| 4 | UNIV OF SCI & TECH OF CHINA | 1 | |
| 5 | Hunt Energy Enterprises LLC | 1 | |
| 6 | HARBIN UNIV OF SCI & TECH | 1 | |
| 7 | Nali New Energy Technology (Beijing) Co., Ltd. | 1 | |
| 8 | Hunan Kankun Vanadium Storage Technology Co., Ltd. | 1 |
The leaders’ positions imply that no single organization has yet built a broad, defensible portfolio. Challengers entering now can still establish meaningful positions without facing an entrenched multi-patent blocker.
The most recent filing years (2024–2026) are understated due to typical patent publication lag of 18–24 months and should not be read as a slowdown in activity. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
Multi-year growth with a dominant H01M core and sparse adjacent branches
Two views of the corpus — annual filing cadence and IPC class composition — together reveal a field that is still expanding from a low base while remaining almost entirely anchored to one technology class.
Annual filing trend
Filings were minimal from 2017 to 2021, then stepped up meaningfully in 2022 and 2023 before the apparent taper in 2024–2026 that is attributable to publication lag rather than a genuine slowdown. The three-year recent window sits well above the prior three-year window, confirming net growth.
↗ Hover for values · click a bar to ask EurekaTechnology composition
H01M (batteries, cells and fuel cells) is visible in the IPC mix, accounting for all nine patent families. C01C (ammonia, cyanides and nitrogen compounds), C01G (compounds of other metals), and D06M (textile chemical treatment) each appear once, indicating isolated material-science excursions that have not yet attracted follow-on filings.
↗ 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.
Capacity regenerable excess electrolyte Zn ion bat…
Battery systems, methods of in-situ grid-scale battery construction, and in-situ battery regeneration methods are disclosed. The battery system features controllable capacity regeneration for grid-scale energy storage. The battery system includes a battery comprising a plurality of cells. Each cell includes a cathode comprising cathode electrode materials… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | 一种电极材料及其制备方法和应用 | 6 |
| 2 | Layered perforated cell separator to mitigate ther… | 2 |
| 3 | 一种混合电池及混合电池运行方法 | 1 |
| 4 | 基于高氧化态离子掺杂的钛铌氧化物锂离子电池负极材料的制备 | 1 |
| 5 | 一种锂离子电池用钒取代的三元正极材料及其制备方法 | 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.
Shanghai Institute of Technology
Shanghai Institute of Technology holds 2 patent families, placing it first in the ranking. Its technology emphasis spans H01M 10 (battery systems) and H01M 4 (electrode materials), suggesting a dual focus on cell-level chemistry and electrode engineering. As the only applicant with more than one family, it is the closest thing to an incumbent in this nascent field.
families: 2Volvo Truck Corporation
Volvo Truck Corporation holds 1 patent family and is classified as a new entrant in the momentum data, indicating a recent first filing in this space. Its technology focus covers H01M 10 (battery systems) and H01M 50 (ancillary cell components), which aligns with vehicle-grade cell integration concerns being extended into grid-scale contexts. As an industrial challenger from outside the traditional grid storage sector, its entry is notable.
families: 1Frequently asked questions
The corpus contains 9 patent families in scope, covering filings from 2017 through 2026 across multiple jurisdictions.
Shanghai Institute of Technology leads with 2 patent families, making it the only applicant with more than one family in this corpus. All other ranked applicants hold exactly 1 patent family each.
The field is in a Growth stage. The recent three-year filing window is 150% above the prior three-year window. Annual volume has eased from its 2022 peak, and 2024–2026 figures are further understated by publication lag, so the underlying expansion trend remains intact.
China accounts for 7 of the patent records in this corpus. Europe (EPO) and the United States each account for 1 patent record, indicating that the prior art base outside China is still thin.
No co-applicant or joint-filing relationships are recorded in this dataset. All applicants are filing independently, and no academic-industrial consortium activity is evident.
The most-cited work in the corpus is a Chinese-language patent on electrode materials and their preparation methods, with 6 citations. A patent on a layered perforated cell separator to mitigate thermal issues follows with 2 citations. Three further Chinese-language patents on hybrid battery systems, titanium-niobium oxide anode materials, and vanadium-substituted ternary cathode materials each carry 1 citation.
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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.
Nothing on this page constitutes an exhaustive prior-art, novelty, freedom-to-operate, or validity search, nor does it constitute legal, financial, investment, or professional advice, and it should not be relied upon as such. Any patent, commercial, or strategic decision should be verified independently and reviewed with qualified patent, legal, and domain professionals. Patsnap makes no warranties, express or implied, as to the accuracy, completeness, or fitness for any particular purpose of the information presented.