Battery Electric Construction Machines Patents: Leaders & Trends 2026
- Concentrated at the top. Five assignees account for 85.0% of the 20 records in scope, with the leader alone holding 7 filings.
- Filings accelerated sharply. Filings rose from 1 in 2021 to 6 in 2024, a +500% jump, before publication lag makes the newest years look artificially quiet.
- Thermal management is the crowded claim. Battery thermal management shows up in the most-cited records, while B60L electric propulsion claims alone cover half of all 20 records.
Filing growth compares 2021 (1 records) with 2024 (6) — a three-year span. 2024 is the most recent year we treat as complete: publication lags filing by roughly 18 months, so 2025 onwards are still filling in and any growth rate that ends there would understate the field. Top-5 share is the combined record count of the five largest assignees divided by all 20 records in scope (CR5), not by the ranked leaders only.
What this landscape covers
This review tracks patent filings at the intersection of electric drivetrains and heavy earth-moving and lifting equipment — excavators, wheel loaders and related construction machines built around battery packs rather than diesel engines. The scope is defined by claims combining machine-level terms like electric excavator or electric wheel loader with system-level terms such as battery pack sizing, battery thermal management, onboard charger, counterweight integration and motor cooling. That combination narrows the field to machines where electrification is a structural design constraint, not an add-on.
The dataset covers 20 published records filed between 2015 and 2026, with the most recent year necessarily incomplete because publication typically lags filing by around 18 months. Records span filings at the United States, WIPO and China receiving offices, reflecting a field still being staked out primarily by machinery incumbents rather than a broad base of new entrants.
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Filing trend and technology composition
Two views of the same 20 records: how filing activity has moved year over year, and which technology classes those filings sit in.
Filing trend: a slow start, then a sharp climb
Annual filings were flat near zero through 2017-2020, then rose from 1 in 2021 to a peak of 7 in 2022 and 6 in 2024, a +500% increase across that three-year span. Treat 2025 and 2026 as undercounted rather than declining, since publication lag has not yet caught up with those filing years.
Technology composition: propulsion and excavation dominate
B60L (electric vehicle propulsion) appears in 50.0% of the 20 records and E02F (excavating and earth moving) in 40.0%, confirming that most filings sit squarely at the junction of driveline electrification and machine function. Thermal management (B60H), power supply (H02J), motor hardware (H02K) and circuit assemblies (H05K) each cover a smaller slice, 10-20% of records, marking the supporting systems that get claimed once the core drivetrain is settled.
Shares are the percentage of the 20 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
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Try EurekaRepresentative filing and most-cited records
Integrated vehicle and battery thermal management of an electric excavator
An integrated vehicle and battery thermal management system for an electric work machine may include a battery module, a radiator, a fan to move air across the radiator, a battery coolant loop including a coolant pump, a refrigerant loop including a compressor, and a chiller providing heat transfer from the battery coolant loop to the refrigerant loop. A controller is operably connected to the coolant pump, the compressor and the fan and is configured to provide a passive cooling mode, a semi-passive cooling mode, and an active cooling mode, dependent upon monitored temperatures in the system.Filed by Deere & Company, published 2023-11-16 as US20230366175A1.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US20240217350A1 | Battery electric excavator | 2 |
| 2 | US12139886B2 | Integrated vehicle and battery thermal management of an electric excavator | 1 |
| 3 | CN218505681U | 一种电动挖掘机电池热管理系统 | 1 |
Citation counts reflect influence within the searched corpus and skew toward older filings; they are not a measure of current commercial importance.
Patent titles are shown in the language they were filed in, not translated, so that each record stays verifiable against the original filing — a translated title will not match in Eureka or in any national register. Publication numbers are shown where the record carries one (3 of 3 rows); clicking a row searches Eureka by that number.
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Reading the concentration, growth and citation data together points to a field where thermal and propulsion claims are getting locked down early, while adjacent systems remain comparatively open.
A small group is doing most of the claiming
Five assignees hold 85.0% of the 20 records in scope, with the leader alone responsible for 7 filings. That leaves a long tail of single- or few-filing entrants working around the edges rather than contesting the core.
Filing activity accelerated fast, then the count dips on paper
Annual filings went from 1 in 2021 to 6 in 2024, a +500% rise, with a peak of 7 in 2022. The apparent drop after 2024 reflects publication lag, not a slowdown in filing.
Propulsion and excavation claims overlap most records
Half of the 20 records touch B60L electric vehicle propulsion and 40.0% touch E02F excavating and earth-moving classes, confirming that most activity sits where drivetrain and machine function meet rather than in standalone component claims.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to battery electric construction machines, with the prior art for and against each one.
Assignee landscape and where the gaps sit
The ranked leaders span established construction-equipment OEMs and a smaller group of newer entrants, mostly from China, filing on thermal and sensing systems rather than core drivetrains.
One assignee holds more than a third of the field
The top-ranked assignee accounts for 7 of the 20 records in this landscape, well ahead of fifth place at 1 record. That gap suggests an early-mover advantage on core propulsion and thermal claims rather than a fragmented race.
Recent-year counts look quiet across the board
Every ranked assignee shows zero filings in the latest tracked year, including a -100% YoY reading for the leader. Given the 18-month publication lag, this reflects incomplete data for 2025-2026 rather than a genuine pullback.
US filings lead, PCT signals international intent
Ten records were filed at the United States office, six through WIPO's PCT route, and four in China. The PCT share indicates that several assignees are seeking protection across multiple jurisdictions rather than defending a single home market.
| Assignee | Recent year | YoY |
|---|---|---|
| Caterpillar Inc. | 0 | -100% |
| Komatsu Ltd. | 0 | — |
| Deere & Company | 0 | — |
| Moog Inc. | 0 | — |
| Qingdao Hydrogen Innovation Intelligent Equipment Co., Ltd. | 0 | — |
| Shandong Henagu Intelligent Technology Co., Ltd. | 0 | — |
| Huapei Shuneng Sensing Technology (Wuxi) Co., Ltd. | 0 | — |
| Sany Automobile Crane Machinery Co., Ltd. | 0 | — |
Where to take this analysis
This landscape identifies where claim density sits today; the next step is testing a specific design or claim direction against it.
Map a candidate claim against the crowded classes
Before drafting around battery thermal management or B60L propulsion claims, check freedom-to-operate against the specific records holding dense coverage there.
Explore claim mapping in EurekaTrack the under-claimed branches as they fill in
Onboard charger and counterweight-integration claims are thin today but could densify quickly given the field's recent filing acceleration.
Set up monitoring in EurekaCommon questions on this landscape
The ranked leaders are dominated by established construction-equipment manufacturers, with the top assignee holding 7 of the 20 records in this landscape and the next four leaders combining for the remainder of the 85.0% held by the top five. This is a concentrated field: only 8 companies appear in the assignee ranking at all, and the gap between first and fifth place (7 records versus 1) is wide. A newcomer should expect to compete against a small number of well-established filers rather than a fragmented crowd.
Filings rose from 1 in 2021 to 6 in 2024, a +500% increase over that three-year span, with a peak of 7 filings in 2022. Because patent publication typically lags filing by around 18 months, the apparent drop in 2025 and 2026 reflects incomplete data rather than a real slowdown. Anyone tracking this field should expect the 2024 figure to remain the most reliable recent read for some time.
Half of the 20 records in scope carry a B60L electric vehicle propulsion classification and 40.0% carry E02F excavating and earth-moving classifications, meaning most filings sit at the junction of drivetrain electrification and machine function. Supporting systems — thermal management, power supply, motor hardware and circuit assemblies — each appear in 10-20% of records, indicating claims on these systems are being filed but at lower density than the core propulsion and excavation claims. A record can carry multiple classes, so these percentages overlap rather than sum to 100%.
The supporting technology classes — onboard charger power electronics, counterweight-integrated battery housing, and duty-cycle-based pack sizing — show up far less often than the core propulsion and excavation classes, at roughly 10-20% of the 20 records versus 40-50% for the core areas. That gap suggests these are the areas where a well-drafted first claim has more room to stand without running into dense prior art. Given the field's recent acceleration, this white space is unlikely to stay open indefinitely.
Not necessarily. Citation counts inside a searched patent corpus tend to favor older filings simply because they have had more time to accumulate citations, so a highly cited record reflects influence within the dataset rather than current commercial weight. The most-cited records in this landscape include filings on battery electric excavators and battery thermal management systems, which points to where early foundational claims were laid rather than where the newest competitive activity is happening. Recent filings should be judged on claim scope and overlap with prior art, not on citation count alone.
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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.
Machine translation. Assignee and organisation names originally recorded in Chinese, Japanese or Korean have been rendered into English by an AI translation step so that the tables stay readable. These renderings are best-effort and may not match a company’s registered English name; the original name is what the underlying patent record carries, and it is what any Eureka query launched from this page uses.