Automotive Wireless BMS Patents: Who Leads, Where the Gaps Are 2026
- Filing activity has cooled since its 2021 peak of 15 records, with the midpoint year 2022 at 8 — a flat-to-declining trend rather than a rising one, even accounting for publication lag.
- One assignee holds 13 of the 61 records in scope, and the top 5 combined account for 68.9% of all filings — this is a concentrated field with a long tail below the leaders.
- H04W wireless communication framing dominates at 65.6% of records, while B60L vehicle-propulsion integration sits far behind at 34.4%, pointing to where the claim language actually lives.
What this landscape covers
Wireless battery management removes the wiring harness that normally links a vehicle’s battery management controller to each cell-monitoring module, replacing it with an RF link. The engineering trade-off is explicit in the search scope itself: claims cluster around RF link reliability, synchronization across nodes, and the functional safety case needed to certify a system with no physical fallback path. This page tracks 61 published records against that scope between 2015 and the 2026-07-31 cut-off.
Because publication typically lags filing by around 18 months, the most recent year in the trend below is necessarily incomplete and should not be read as a drop-off in real activity.
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Filing trend and technology composition
Two views of the same 61 records: how filing activity has moved year over year, and which IPC subclasses carry the claim language.
Filings peaked in 2021, then eased
Annual filings rose from zero in 2017 to a peak of 15 in 2021, with the midpoint year 2022 sitting at 8 — a flat-to-declining pattern through the most recent complete years, with the final partial year understated by publication lag.
Wireless-networking classes dominate over powertrain classes
H04W (wireless communication networks) appears in 65.6% of the 61 records, well ahead of B60L (electric vehicle propulsion) at 34.4% and H04L (digital information transmission) at 23.0%. H01M (batteries and cells), G01R (electric measurement), G06F (data processing), H02J (power supply) and H04B (transmission) each cover a smaller but still material share, since records commonly carry more than one class.
Shares are the percentage of the 61 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Automotive Wireless Battery Management with Eureka
This page is one run against one query. Ask Eureka your own question about automotive wireless battery management and every answer comes back with the patent numbers behind it.
Try EurekaMost-cited records in scope
Resolving a failure in communication within a wireless battery management system of a vehicle
Methods, apparatuses, systems, devices, and non-transitory storage for resolving a failure in communication within a wireless battery management system (BMS) of a vehicle are disclosed. A wireless network controller (WNC) of a wireless BMS determines that there is a failure in communication between the WNC and one or more module measurement systems (MMS), determines a background RF power level of the communication channel, and selects one or more actions to attempt to correct the failure based on that reading.Filed by Sensata Technologies, published 2023-03-16 as US20230078545A1.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | WO2004047215A1 | Wireless battery management system | 85 |
| 2 | US20060152190A1 | Wireless battery management system | 59 |
| 3 | US20200396688A1 | Wireless Battery Management System, Node For Wireless Communication, And Method Of Transmitting Data | 23 |
| 4 | US20210281988A1 | Wireless battery management system for vehicle | 17 |
| 5 | US20240069110A1 | Multiple primary nodes for wireless battery management system robustness | 14 |
| 6 | US20220368364A1 | Gain control for packet based wireless battery management system | 11 |
| 7 | US20220417792A1 | Minimizing over the air data transmission for wireless battery monitoring systems | 11 |
| 8 | US20210377894A1 | Wireless BMS host time synchronization mechanism | 11 |
| 9 | US20250008491A1 | Hierarchical wireless battery management system | 10 |
| 10 | WO2021222662A1 | Secure wireless protocol for wireless sensor networks | 9 |
Citation counts favour older records simply because they have had longer to accumulate references — read them as a signal of influence on the field, not as a ranking of current relevance.
Each row carries its publication number; clicking a row searches Eureka by that number.
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Browse MCP servers →What the numbers mean for a filing decision
Three signals worth weighing before drafting a new application in this space.
The field is led, not fragmented
The leading assignee alone accounts for 13 of the 61 records, and the top 5 combined reach 68.9% of all filings in scope. A new entrant is filing into a space where the dominant RF-link and node-architecture claims are already staked out by a small group.
Growth has plateaued since the 2021 peak
Filing volume climbed from zero in 2017 to a peak of 15 in 2021, then eased to 8 by the 2022 midpoint. That is a flat-to-declining trajectory through the most recent complete years, even before accounting for the understatement built into the final partial year.
Claims lean communications, not powertrain
Two-thirds of records carry an H04W wireless-networking classification against just over a third carrying B60L propulsion classification. The drafting centre of gravity in this field is the RF and synchronization layer, not the vehicle-integration layer.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to automotive wireless battery management, with the prior art for and against each one.
Who is filing, and where the openings sit
A short list of assignees holds most of the volume; the sub-areas below sit outside that dense core.
One assignee sets the pace
The top-ranked assignee's 13 records is more than double the fifth-place count of 5, marking a clear lead rather than a tightly bunched field at the very top.
Concentration deepens beyond the top 5
The top 10 combined reach 90.2% of all records, leaving the remaining 9 ranked assignees to share the balance — a genuine long tail rather than a broad, even distribution.
Co-assignment is rare and clustered
Only three co-assignee pairings appear in the dataset, and the strongest link ties two entities within the same corporate family together, with a third, separate name appearing once alongside each.
| Assignee | Recent year | YoY |
|---|---|---|
| Analog Devices, Inc. | 1 | — |
| LG Electronics Inc. | 0 | — |
| Texas Instruments Inc. | 0 | — |
| Sensata Technologies, Inc. | 0 | — |
| Analog Devices International Unlimited Company | 0 | — |
| Koninklijke Philips N.V. | 0 | — |
| Silicon Works Co., Ltd. | 0 | — |
| Philips Intellectual Property & Standards GmbH | 0 | — |
Where to take this analysis
The dataset points to a mature core of RF and synchronization claims with clearer openings at the edges.
Map the leader's claim boundaries
Before drafting into node communication or failure-recovery claims, pull the leading assignee's full family to see exactly how far its RF-link and synchronization claims extend.
Explore assignee portfolios in EurekaStress-test a white-space claim
Run a candidate claim in one of the under-claimed sub-areas against the full 61-record corpus to check freedom-to-operate before committing drafting time.
Run a claim check in EurekaTrack the next filing wave
With 2021 as the peak and 2022 down to 8, watch whether filings recover once the current partial year fully publishes.
Set up monitoring in EurekaFrequently asked questions
This dataset tracks 61 published records matching wireless BMS terms combined with RF link reliability, synchronization, harness elimination, or functional safety language, covering 2015 through the 2026-07-31 cut-off. That is a narrow, term-defined scope rather than a count of every battery-management patent, so it should be read as a proxy for this specific technical niche. Because publication lags filing by roughly 18 months, the true count for the most recent year is understated in any snapshot taken today.
The ranking covers 19 companies, with the leading assignee holding 13 of the 61 records in scope and the top 5 combined accounting for 68.9% of all filings. That concentration means a handful of players control most of the claim space, while the remaining ranked assignees each hold a small handful of filings. Recent-year momentum data also shows most of these leaders with zero filings in the latest year, so leadership by volume does not always mean leadership by current activity.
Filing activity rose from zero records in 2017 to a peak of 15 in 2021, then eased to 8 by the 2022 midpoint — a flat-to-declining pattern rather than sustained growth. The most recent year in the dataset will read as lower still, but that is an artefact of the roughly 18-month gap between filing and publication rather than a real collapse in activity. Anyone using this trend to justify a filing decision should weight the last one to two years lightly and focus on the multi-year pattern instead.
Two-thirds of the 61 records (65.6%) carry an H04W wireless-communication-networks classification, making RF link and node architecture the dominant claim territory. B60L electric-vehicle-propulsion classification appears in 34.4% of records, with H04L digital transmission, H01M batteries and cells, G01R electric measurement, G06F data processing, H02J power supply, and H04B transmission each covering smaller, overlapping shares. Because a single record can carry several IPC classes, these figures are not mutually exclusive and add up to more than 100%.
The dense core of this field sits in H04W wireless-networking claims and B60L propulsion-integration claims, both well covered by the top-ranked assignees. Sub-areas that see lighter filing density in this dataset include multi-node RF failover routing, battery-pack RF interference mitigation, cross-module clock synchronization protocols, and functional-safety fallback logic that does not rely on a wired backup path. These are worth checking against the full corpus before drafting, since lighter density here does not guarantee freedom to operate.
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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.