Bidirectional DC-DC Converter Grid Patents: Leaders & Gaps 2026
- Filing has been flat to declining since a 2019 peak of three families, with the most recent full year sitting below the midpoint — this is not a growth curve to build a defensive filing strategy around.
- India accounts for half of all receiving offices (10 of 19), ahead of the United States at six — a jurisdictional skew worth checking before assuming US prior art is the binding constraint.
- The most-cited record carries 44 citations, nearly double the next entry, concentrating influence in a small number of grid-storage converter documents rather than spreading it across the field.
Filing growth compares 2021 (3 records) with 2024 (3) — 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 19 records in scope (CR5), not by the ranked leaders only.
What this patent set covers
Bidirectional DC-DC converter grid integration sits at the junction of power conversion hardware and grid-interactive control — converters that move energy both ways between a DC source (battery, PV string, EV pack) and a grid-tied bus, with claims that extend into reactive power support, grid-forming behaviour and V2G interfacing. The IPC mix in this dataset is dominated by H02J grid-systems classifications alongside H02M conversion circuitry, with a smaller but persistent presence of EV propulsion (B60L) and photovoltaic (H02S) classes.
Nineteen published families make this a narrow, specialist corpus rather than a broad one — useful for reading who has staked specific claim territory, less useful for drawing sweeping trend lines. Publication lags filing by roughly 18 months, so the 2025-2026 window in any trend chart understates real filing activity.
Filing trend and technology composition
Nineteen patent families published between 2015 and mid-2026 define the corpus. The trend and IPC breakdown below describe where claim activity has concentrated and where it has stayed thin.
A peak in 2019, then a flat-to-declining line
Filings rose to three families in 2019, the high point of the series, then eased back toward one family at the 2022 midpoint. A single family is recorded in the most recent partial year — consistent with the usual publication lag rather than a real collapse in activity, but the underlying trajectory before that lag is applied is flat at best.
Grid-systems claims outweigh conversion-circuit claims
H02J (power supply and grid systems) appears in 18 of 19 records, effectively universal in this set, while H02M (power conversion) appears in 11. EV propulsion (B60L), photovoltaic (H02S), hybrid vehicle control (B60W), electrolysis (C25B) and control systems (G05B, G05F) each appear in four records or fewer — these are the adjacent branches where claim density is thin rather than absent.
Shares are the percentage of the 19 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Bidirectional DC-DC Converter Grid Integration with Eureka
This page is one run against one query. Ask Eureka your own question about bidirectional dc-dc converter grid integration and every answer comes back with the patent numbers behind it.
Try EurekaThe records carrying the most citation weight
Bidirectional multi-port DC-DC converter for mobile charging applications
Filed by Qatar Foundation for Education, Science and Community Development, this record describes a mobile EV charging system built around a storage battery, a controller and a DC-DC converter module with three distinct interfaces: a high-voltage interface coupled to an AC-DC front end, a storage-battery interface, and an electric-vehicle interface. The converter module is positioned as the switching hub between a high-voltage source, an onboard battery buffer and the vehicle being charged.Abstract trimmed for length; see the full record for complete claim language.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US20200014306A1 | Battery integrated modular multifunction converter for grid energy storage systems | 44 |
| 2 | US20170077709A1 | PV system having distributed DC-DC converters | 23 |
| 3 | EP3584903A1 | DC voltage control in renewable energy-based multilevel power converter | 6 |
| 4 | US10742127B2 | Battery integrated modular multifunction converter for grid energy storage systems | 2 |
| 5 | US20250145029A1 | Bidirectional multi-port DC-DC converter for mobile charging applications | 1 |
| 6 | IN202231075196A | Energy management controller for distributing electricity across the micro grid with integrated wind and sola… | 1 |
| 7 | CN113890104A | 一种轨交牵引双向变流智能装备多模块并联运行的均衡系统 | 1 |
Citation counts are drawn from a searched corpus and skew toward older, longer-indexed records — read them as a signal of influence on subsequent filings, not as a ranking of current commercial relevance.
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 (7 of 7 rows); clicking a row searches Eureka by that number.
Put your own technology through the same analysis
Eureka on the web
When you want the answer in the next five minutes.
The agent works the prompt against patents and technical literature, citing every source.
Run your analysis now →MCP server & REST API
When it has to run inside your own pipeline.
Patent search, landscape analysis and assignee resolution as MCP tools. Drop them into any agent framework, or call REST directly.
Browse MCP servers →What the citation and filing pattern actually indicates
Four figures from this dataset carry more decision-relevant weight than the rest: where citation influence sits, how thin the receiving-office spread is, how flat the trend line runs, and how narrow the co-filing network is.
Influence sits in grid-storage converter claims
The top-cited record, on a battery-integrated modular multifunction converter for grid energy storage, holds nearly double the citations of the next entry. That gap suggests later filers in this space are building on a specific architecture rather than a diffuse set of independent approaches.
India leads receiving-office volume, not the US
India accounts for over half of tracked filings, ahead of the United States at six and China and Europe combined at three. A freedom-to-operate check anchored only on US or EPO prior art would miss the majority of this corpus.
No sustained growth curve since the 2019 peak
Filing activity rose to three families in 2019 and has not returned to that level since, with the 2022 midpoint sitting at one. Even allowing for publication lag on the last one to two years, this reads as a mature, narrow corpus rather than an accelerating one.
Collaboration is limited and concentrated in one cluster
Only five co-assignee pairs exist across 19 families, and the strongest repeated pairing involves the same individual inventor across three separate co-filings. This is a field of largely independent filers rather than one organised around joint-development consortia.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to bidirectional dc-dc converter grid integration, with the prior art for and against each one.
Assignee landscape and where the field is unsettled
The named organisations in the recent-momentum data each show zero filings in the latest tracked year, reinforcing the flat trend read above — this is a field with no single assignee currently pulling ahead, and academic and research bodies feature alongside corporate filers.
No assignee is currently accelerating
Every organisation surfaced in the recent-momentum view — spanning academic institutes, a state university, a foundation and corporate filers — shows no filings in the most recent tracked year. Combined with the flat overall trend, this points to a corpus in a holding pattern rather than one with an emerging leader.
Mixed academic and corporate filer base
The tracked assignees include research universities, a science-and-education foundation, and industrial converter and inverter manufacturers. That mix suggests the technology is still partly in the research-to-product transfer stage rather than fully industrialised.
Individual inventors, not corporate JVs, drive collaboration
The strongest co-assignee links in this dataset are repeated pairings involving one individual inventor across three separate filings, rather than cross-company joint ventures. Collaboration here looks more like an academic co-authorship pattern than an industrial partnership structure.
| Assignee | Recent year | YoY |
|---|---|---|
| Indian Institute of Technology | 0 | — |
| Utah State University | 0 | — |
| Qatar Foundation for Education, Science and Community Development | 0 | — |
| University of Electronic Science and Technology of China | 0 | — |
| Schneider Electric Solar Inverters USA, Inc. | 0 | — |
| Nanjing Hongli Intelligent Technology Co., Ltd. | 0 | — |
| VEMU INSTIUTE OF TEHCNOLOGY | 0 | -100% |
| MRS SUBHASMITA SATAPATHY | 0 | — |
Where to take this analysis
The dataset points to specific next questions rather than a single conclusion — each depends on what the reader is trying to decide.
Check the India filing skew against your target market
With half of tracked filings routed through India as receiving office, a freedom-to-operate view built only on US or EPO records will be incomplete for this technology.
Explore jurisdictional coverage →Watch the highest-cited converter architecture for design-around risk
The battery-integrated modular multifunction converter record carries roughly double the citations of any other record in the set, making it the most likely reference point examiners will cite against new filings.
Review citation-linked prior art →Re-run the trend once the 2025-2026 lag window closes
The apparent decline after 2019 is partly a publication-lag artefact; a follow-up pull in 12-18 months will show whether recent filing activity is stronger than it currently appears.
Track filing trend updates →Common questions about this patent landscape
This dataset tracks 19 published patent families filed between 2015 and mid-2026 that combine bidirectional DC-DC converter claims with grid-tie, V2G, grid-forming or reactive-power-support language. That is a narrow, specialist corpus rather than a broad one, so rankings and citation counts inside it should be read as directional signals within a niche field, not as coverage of all power-electronics grid patents. Broader searches using only converter terms without the grid-interaction qualifiers would return a much larger and less targeted set.
No single assignee shows sustained recent momentum in this corpus — every organisation tracked in the recent-year momentum view recorded zero filings in the latest tracked year. The field includes a mix of academic institutions, a research foundation, and industrial converter and inverter manufacturers, with filing activity spread thinly rather than concentrated behind one leader. This is consistent with the overall flat-to-declining filing trend since a 2019 peak.
The most-cited record in this dataset is a battery-integrated modular multifunction converter for grid energy storage systems, carrying 44 citations — nearly double the next most-cited record at 23. High citation counts in a searched corpus tend to favour older, longer-indexed filings, so this reflects accumulated influence on later filings rather than current commercial dominance. A related continuation from the same family family also appears among the most-cited records, reinforcing that architecture's reference-point status.
The IPC composition shows H02J grid-systems classifications present in nearly every record while several adjacent branches — electric vehicle propulsion, photovoltaic integration, hybrid vehicle control, electrolysis-coupled conversion, and control-system classes — each appear in four records or fewer. That thin representation points to under-claimed territory in areas like multi-port converter topologies spanning EV and storage interfaces, and electrolysis-coupled DC-DC conversion, where architecture claims have not been densely staked yet. Thin filing density signals open claim space, not proven technical infeasibility, so any filing there still needs its own novelty check.
The trend is flat to declining rather than growing: filings peaked at three families in 2019 and had fallen back to one family by the 2022 midpoint. Publication typically lags actual filing by around 18 months, so the most recent one to two years in any chart will always look thinner than the true filing rate turns out to be. Even accounting for that lag, this corpus does not show the accelerating filing curve associated with a technology entering a growth phase.
Research Bidirectional DC-DC Converter Grid Integration in depth with Eureka
Go past this page: query the whole bidirectional dc-dc converter grid integration corpus yourself, in your own scope.
Every answer comes back with patent numbers you can open.
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.