License or acquire the Hybrid Power Pack patent family

By Hemant K. Rohera, inventor and patent holder — ORCID 0009-0005-3275-1743
Published 2 November 2026 · Last updated 2 November 2026

This page is written for technology-licensing, IP and advanced-engineering teams. It answers the questions a licensing evaluation asks first — what exactly is claimed, how to map a design to it, how long it runs, who holds title, what has been tested — and sets out the terms on which the family is available.

1. What the family protects

The Hybrid Power Pack is a battery–capacitor energy-storage architecture: one pack in which an electrochemical store and a capacitor bank share a single input/output port, each with its own switched path, under a controller that draws power from either store or both at once. The patent family is PCT/IB2015/056108, priority India 2626/MUM/2015, 10 July 2015.

The independent claims of US 10,523,019 B2 (claims 1 and 20) recite a specific arrangement, not the general idea of pairing a battery with a capacitor. That arrangement is what a licence covers, so it is set out element by element below.

2. Claim 1, element by element

Claim 20 recites the same arrangement with the first store as a plurality of cells, the second as a capacitor bank, and adds a cell-balancing circuit and a capacitor-balancing circuit.

This table restates the claim language so that a design can be compared with it. Whether a particular product falls within a claim is a legal question for the parties’ patent counsel, and nothing on this page is an opinion on any third party’s product.

3. The dependent claims

A claim-by-claim engineering analysis of all twenty US claims is published open access: The Hybrid Power Pack as a platform (DOI 10.5281/zenodo.22970638).

4. Applications

The architecture earns most where a load draws short, high-current peaks from a store sized for energy. The claimed arrangement does two things in every application below: the capacitor bank, on its two-way switch, takes the fast pulses in both directions at the shared port, and the cells take charge only through the battery management system on their own one-way path, so a sharp charging pulse reaches the capacitor first.

Engine starting and start–stop

Cars, trucks, tractors and buses. The crank is the clearest case: a peak several times the average, lasting under a second. With the capacitor carrying it, the derived reduction in battery Joule heat during the crank is 96.7–98.7 % across three cranking profiles, and the published sizing gives cell masses from 1.44 kg for 12 V car cranking banks. This is the application tested at CIRT. Suited to: makers of starting batteries and ultracapacitor engine-start modules, and truck and tractor OEMs.

Hybrid cars and 48 V mild hybrids

A mild-hybrid battery sees two kinds of peak: the restart after every stop and the braking pulse before it. In the claimed arrangement the restart is drawn from the capacitor, the braking pulse lands on the capacitor at the shared port, and the cells recharge from it through the battery management system at a rate they accept. The claims are voltage-agnostic, so the same arrangement applies to 12 V, 48 V and high-voltage packs. Suited to: 48 V system and battery suppliers, and OEMs with start–stop or mild-hybrid platforms.

Electric vehicles: three-wheelers, buses and cars

City duty is a string of accelerations and braking events. Modelled on the WLTC Class 3b drive cycle, an ideal capacitor buffer lowers battery Joule heat by 53–89 % depending on the phase. For a real bank, the published sizing study finds the best heat reduction per kilogram with a 5–10 s split: 30.6 kg of cells lowers battery heat by 26 % on WLTC, and 61.6 kg by 54 % on the harder US06 cycle. Stop-start fleets — three-wheelers, city buses, delivery vans — gain most. Suited to: EV OEMs, battery-pack integrators and swap-battery operators.

Solar, hybrid inverters and storage

A solar battery sees fast swings when cloud passes and when loads switch. With the capacitor taking the fast band (a 20 s split), the published model gives a 9.2 % lower battery peak power for 1.1 t of cells per MWp; the case is strongest in compact hybrid inverters and off-grid systems, where load steps are large relative to the battery. Suited to: hybrid-inverter and home-storage makers, and solar-plus-storage integrators.

UPS, telecom and generator starting

At a power cut the capacitor carries the first seconds and the battery takes over for the minutes that follow; at a generator start the capacitor supplies the crank. Both draw on the same physics as engine starting. Suited to: UPS and telecom-power makers, and genset OEMs.

Figures marked as derived or modelled come from the published papers and are predictions, to be confirmed by measurement in each application. The underlying relationship is Joule’s law: battery heat follows the square of current, so the reduction is 1 − 1/FF² for a duty with form factor FF — explained in peak versus rms current.

5. Test record, stated exactly

Both are single-configuration endurance and environmental evaluations. A side-by-side comparison with a battery-only control on a defined duty cycle is the next stage, with sample builds being arranged with a contract manufacturer; a licensee can specify the duty cycle that matters to its product. How to read reports like these: how to read a test report.

6. Title and term

Title. The patents are held by the inventor personally; the assignee on record is “Individual”. There is no employer, no corporate assignee and no prior assignment to trace, so the licensor or seller is the inventor himself. Rohera Emerging Energies Pvt. Ltd. develops the technology. Details: held by the inventor.

Term. The US grant shows an expiry of 17 October 2035. Counterparts run twenty years from the international filing date of 11 August 2015, subject to each office’s rules and renewal fees. Details: remaining term.

The family’s counterparts outside the United States, with the status of each, are kept on the patent register.

7. Who is working in this space

Six later US filings cite US 10,523,019 B2 as prior art, among them four from a maker of supercapacitor engine-starting and stand-by power modules, and others on ultracapacitor balancing and fault-tolerant battery management. Google Patents reports 23 families citing the family worldwide. The record: who cites these patents.

8. The options, and how an evaluation runs

How an evaluation runs. (1) You review the public record — this page, the claims and the open papers. (2) A mutual NDA is signed. (3) Technical disclosure: circuit detail, sizing method, test reports and the sample programme. (4) Terms are agreed between the parties and their counsel.

The companion family: OMNIA Drive

OMNIA Drive (PCT/IB2016/055563, priority 25 September 2015) covers a power-processing unit that reads the state of charge of the energy store and selects the source of traction power against a threshold, charging the store and driving the motor at the same time. Grants in force: US 11,117,476 B2 (expiry 2 July 2037), JP 7,109,623 and IN 477613. It is available on the same terms, separately or with the Hybrid Power Pack. Claim explained: state of charge as a switch.

References