# US 12,109,907 B2 · Power supply system

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- Number: US 12,109,907 B2
- Document ID: US12109907B2
- Status: Granted
- Kind: B2
- Application number: 18/190,555
- Filed: 2023-03-27
- Published: 2023-09-28
- Granted: 2024-10-08
- Earliest claimed: 2022-03-28
- Assignees: Denso Wave Incorporated
- Applicants: Denso Wave Incorporated
- Inventors: Sarimu Inoue
- Web page: https://patentgrep.com/patent/US12109907B2

## CPC

- B60L 55/00: Arrangements for supplying energy stored within a vehicle to a power network, i.e. vehicle-to-grid [V2G] arrangements
- B60L 8/003: {Converting light into electric energy, e.g. by using photo-voltaic systems}
- H02J 7/35: with light sensitive cells
- H02M 1/007: {Plural converter units in cascade (push-pull DC/DC converters with pre-regulator H02M3/3374; DC-AC converters following a DC-DC stage including a high frequency transformer H02M7/4807; DC-AC converters following a DC-DC conversion stage generating periodically varying voltages H02M7/4826)}
- H02M 3/01: {Resonant DC/DC converters}
- H02M 3/158: including plural semiconductor devices as final control devices for a single load
- H02M 3/285: {Single converters with a plurality of output stages connected in parallel (parallel operation of a plurality of converters in DC distribution networks H02J1/10)}
- H02M 3/335: using semiconductor devices only
- H02M 3/33573: {Full-bridge at primary side of an isolation transformer}
- H02M 3/33584: {Bidirectional converters}
- B60L 2210/14: Boost converters
- B60L 2210/30: AC to DC converters
- Y02T 10/70: Energy storage systems for electromobility, e.g. batteries
- Y02T 10/7072: Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
- Y02T 90/14: Plug-in electric vehicles
- B60L: PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES (arrangements or mounting of electrical propulsion units or of plural diverse prime-movers for mutual or common propulsion in vehicles B60K1/00, B60K6/20; arrangements or mounting of electrical gearing in vehicles B60K17/12, B60K17/14; preventing wheel slip by reducing power in rail vehicles B61C15/08; dynamo-electric machines H02K; control or regulation of electric motors H02P); SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES (electric coupling devices combined with mechanical couplings of vehicles B60D1/64; electric heating for vehicles B60H1/00); ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL (control or regulation of electric motors H02P); MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02M: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF (transformers H01F; dynamo-electric converters H02K47/00; controlling transformers, reactors or choke coils, control or regulation of electric motors, generators or dynamo-electric converters H02P)
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

A power supply system charging a battery of an electric car through a grid power line and supplying electric power stored in the battery to electrical equipment through an in-home wiring, including: an isolated converter connected to the grid power line, the in-home wiring and the battery; and a controller controlling the isolated converter. The isolated converter includes a plurality of isolated converter circuits each including two full-bridge circuits. One of the plurality of isolated converter circuits further includes two booster circuits. The controller receives load amount information depending on the operation state of the electrical equipment from a monitor device and switches, on the basis of the load amount information, an operating mode of the isolated converter to one of first mode to fourth mode. The controller causes the two booster circuits to perform a boosting operation in the first mode and third mode.

## Claims

### Claim 1

A power supply system configured to charge a battery of an electric car through a grid power line and supply an electric power stored in the battery to in-home electrical equipment through an in-home wiring, the power supply system comprising:
an isolated converter connected to the grid power line, the in-home wiring and the battery; and
a controller configured to control the isolated converter, wherein
the isolated converter includes a plurality of isolated converter circuits,
the plurality of isolated converter circuits are connected to each other in parallel,
the plurality of isolated converter circuits each include an isolated unit and two full-bridge circuits,
the isolated unit is interposed between the two full-bridge circuits,
one of the plurality of isolated converter circuits is a booster converter circuit further including two booster circuits,
the two booster circuits are connected to the respective two full-bridge circuits,
the controller is configured to receive, from a monitor device configured to monitor an operation state of the in-home electrical equipment, load amount information depending on the operation state and switch, on a basis of the load amount information, an operating mode of the isolated converter to one of:
(a) a first mode to cause each of the two full-bridge circuits of the booster converter circuit to operate as a half-bridge circuit;
(b) a second mode to cause each of the two full-bridge circuits of one of the plurality of isolated converter circuits to operate as a full-bridge circuit;
(c) a third mode to cause each of the two full-bridge circuits of the booster converter circuit to operate as the half-bridge circuit and each of the two full-bridge circuits of another one or more of the plurality of isolated converter circuits to operate as the full-bridge circuit; and
(d) a fourth mode to cause each of the two full-bridge circuits of each of two or more of the plurality of isolated converter circuits to operate as the full-bridge circuit, and
the controller is configured to cause the two booster circuits to perform a boosting operation in the first mode and third mode.