Solid-State Battery Current Collector Patent Landscape
Solid-State Battery Current Collector Patent Landscape in 2026
The solid-state battery current collector patent space is nascent and highly concentrated, with seven patent families in scope and China accounting for the large majority of filings. Activity accelerated sharply from 2021 to 2022 and the field remains in a growth stage on a multi-year basis, though annual volume has eased from its 2022 peak.
A nascent, China-led field with extreme concentration at the top
The corpus spans 7 patent families, with the top five filers — led by Hubei Fuyida Electronic Technology Co. and Hebei Yuantuo Jiacheng New Energy Technology Co., each holding 2 patent families — accounting for the entirety of the hundred largest filers’ combined total.
Concentration is absolute: the top five applicants represent 100% of the top-100 filer pool, signaling that this is still an open field where a focused entrant can rapidly establish a meaningful position.
| # | Applicant | Patent families | Share |
|---|---|---|---|
| 1 | Hubei Fuyida Electronic Technology Co. | 2 | |
| 2 | Hebei Yuantuo Jiacheng New Energy Technology Co. | 2 | |
| 3 | Tuge Technology (Guangdong) Co. | 1 | |
| 4 | Zhongchen Juchi (Gansu) New Energy Co. | 1 | |
| 5 | Toyota Motor Corporation | 1 |
The presence of Toyota Motor Corporation alongside smaller Chinese specialists suggests that Tier-1 automotive OEMs are beginning to probe this space, but no single player has yet built a commanding portfolio.
The most recent 18–24 months of filings are likely under-counted due to standard patent publication lag; the apparent quietness of 2023–2026 should not be read as a slowdown. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
A 2022 filing surge and a battery-centric technology mix
Two signals define the structural picture: a sharp jump in annual filings around 2022 that established the growth trajectory, and a technology mix overwhelmingly anchored in battery cell and electrode chemistry with only sparse adjacent coverage.
Annual filing trend
Filings were essentially zero from 2017 through 2020, then rose in 2021 and peaked in 2022 with three families filed that year. Years 2023 onward each show one family, but these figures are understated by publication lag and should not be interpreted as a plateau or decline.
↗ Hover for values · click a bar to ask EurekaTechnology composition
All 7 patent families carry the H01M class (batteries, cells, and fuel cells), confirming that applicants are framing current-collector advances primarily as battery inventions. B23K (welding, soldering, and brazing) and G01K (temperature measurement) each appear once, indicating thin but real activity at the manufacturing-process and sensing periphery.
↗ 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.
Method of estimating state of deterioration of bat…
Provided is a method of estimating a state of deterioration of a battery with higher accuracy. The method includes: calculating a difference between a temperature T<sub>1 </sub>when temperature begins to drop, and a temperature T<sub>2 </sub>when the temperature begins to rise and defining the difference as a temperature difference ΔT<sub>12 </sub>if the… (excerpt from the patent abstract)
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.
What the patent structure means for R&D strategy
With only 7 families in scope and a 300% recent-window growth rate, the field offers genuine first-mover opportunity — but the concentration and geographic skew toward. China also signal specific risks and entry considerations.
Growth stage with annual volume easing from its 2022 peak
The field is classified as Growth, supported by a 300% increase in the recent three-year window versus the prior three-year window. However, annual volume eased after the 2022 peak, and publication lag means true current-year activity is understated. Entrants joining now are still early relative to a likely larger build-out ahead.
Growth stageAbsolute concentration among a small group of Chinese SMEs and one OEM
The top five filers hold 100% of the top-100 filer pool’s combined total, and each of the two leading applicants holds only 2 patent families. This means the cost of matching the leading position is low, but it also means no defensive moat has yet been established. Toyota Motor Corporation’s single family signals OEM awareness without commitment.
High concentrationNo co-applicant activity detected in the current corpus
Evidence pending: no co-filing relationships are present in the current dataset. The absence of collaboration signals that applicants are working independently, which is consistent with an early-stage field where proprietary approaches have not yet converged enough to motivate joint development agreements.
No co-filing detectedChina dominates filings; the United States is the only other jurisdiction
Six of the patent records are filed in China and one in the United States. No European, Japanese, or Korean jurisdictions appear in the evidence, which is notable given Toyota Motor Corporation’s participation. R&D teams outside China should monitor whether leading Chinese applicants begin filing PCT or US continuations as the technology matures.
China-dominantGo beyond the landscape: Eureka’s TRIZ Solution agent breaks down an R&D problem and returns patented concept solutions, each with a technical approach and cited patent & literature evidence.
Co-filing pairs, ranked by the number of jointly-filed patent families.
Top filers split between battery-electrode specialists and a global OEM
The two leading applicants are Chinese companies with battery-cell and electrode focuses; Toyota Motor Corporation is the sole non-Chinese entrant, bringing a temperature-measurement angle to its single family.
Hubei Fuyida Electronic Technology
Holds 2 patent families, both classified under H01M 4 (electrode materials and structures). The company’s focus is narrowly on the electrode-level aspects of current collectors. No momentum data is available in the evidence set, so trajectory cannot be characterized beyond their current ranking position.
families: 2Toyota Motor Corporation
Holds 1 patent family and is flagged as a new entrant in the recent filing window. Toyota’s filing spans both H01M 10 (secondary batteries) and G01K 3 (temperature measurement), suggesting an interest in current-collector thermal monitoring rather than purely structural design. As a global Tier-1 OEM, even a single family warrants tracking.
families: 1| Applicant | Recent (3 yrs) | Trend |
|---|---|---|
| Hebei Yuantuo Jiacheng New Energy Technology Co. | 2 | ▲ new entrant |
| Toyota Motor Corporation | 1 | ▲ new entrant |
Under-served adjacent branches worth watching
With only two IPC classes beyond H01M appearing in the corpus — and each with a single patent record — the technology periphery of solid-state battery current collectors is largely unpopulated and represents areas where targeted filing could establish early positions.
B23K · Welding, soldering, and brazing for current-collector bonding
Only one patent record touches B23K in the entire corpus, filed by a laser-technology specialist. Current-collector-to-electrode bonding quality is a known manufacturing challenge in solid-state cells, where traditional liquid-electrolyte assembly processes do not transfer cleanly. A team with laser or ultrasonic welding expertise could find a sparsely contested entry point here, provided they can demonstrate relevance to solid-state stack assembly.
Search this in Eureka →G01K · Temperature sensing integrated into current collectors
A single patent record — Toyota Motor Corporation’s — covers temperature measurement in the context of solid-state battery current collectors. Integrating thermal sensing directly into the current-collector structure is a plausible route to real-time thermal management without added components. The branch is observed as sparse rather than confirmed as a validated opportunity, but the technical rationale is sound and the filing space is nearly empty.
Search this in Eureka →How leading applicants differ by technology route
Strength of each leader across the main technology routes.
| Player | H01M 10 · Batteries, cells & fuel cells | H01M 4 · Batteries, cells & fuel cells | B23K 101 · Welding, soldering & brazing | B23K 26 · Welding, soldering & brazing | G01K 3 · Temperature measurement |
|---|---|---|---|---|---|
| Hebei Yuantuo Jiacheng New Energy Technology Co. | Strong · 2 | Strong · 2 | Absent | Absent | Absent |
| Toyota Motor Corporation | Strong · 1 | Absent | Absent | Absent | Strong · 1 |
| Hubei Fuyida Electronic Technology Co. | Absent | Strong · 2 | Absent | Absent | Absent |
Frequently asked questions
The evidence set contains 7 patent families in scope. This is a small corpus consistent with an early-growth field that only began accumulating filings from 2021 onward.
Hubei Fuyida Electronic Technology Co. and Hebei Yuantuo Jiacheng New Energy Technology Co. are jointly ranked first, each holding 2 patent families. No single applicant has a dominant lead.
The field is in a Growth stage. The recent three-year filing window shows 300% growth over the prior three-year window. Annual volume peaked in 2022 and has eased since, but publication lag means the most recent years are understated and the multi-year growth trend remains intact.
China leads with 6 patent records, and the United States accounts for 1. No other jurisdictions appear in the current evidence set.
Yes. Toyota Motor Corporation holds 1 patent family, classified as a new entrant in the recent filing window. Their filing combines H01M 10 (secondary batteries) with G01K 3 (temperature measurement), suggesting a focus on thermal management within current-collector design.
No co-applicant relationships are detected in the current evidence set. All filers appear to be working independently, which is typical for an early-stage field where proprietary approaches have not yet converged.
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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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