# US 11,440,426 B2 · Electric vehicle and electric vehicle control method automatically selecting power supplied to outside from engine or battery of electric vehicle

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- Number: US 11,440,426 B2
- Document ID: US11440426B2
- Status: Granted
- Kind: B2
- Application number: 17/054,780
- Filed: 2019-04-04
- Published: 2021-04-08
- Granted: 2022-09-13
- Earliest claimed: 2018-05-22
- Assignees: Honda Motor Co., Ltd.
- Applicants: Honda Motor Co., Ltd.
- Inventors: Hiroyuki Kanazawa
- Web page: https://patentgrep.com/patent/US11440426B2

## CPC

- B60L 53/57: Charging stations without connection to power networks
- B60L 1/006: {to power outlets}
- B60L 50/15: with additional electric power supply (with capacitors charged by engine-driven generators B60L50/40; with batteries charged by engine-driven generators B60L50/61)
- B60L 50/50: using propulsion power supplied by batteries or fuel cells
- B60L 50/60: using power supplied by batteries (in combination with fuel cells B60L50/75)
- B60L 53/53: Batteries
- B60L 53/66: Data transfer between charging stations and vehicles
- B60L 55/00: Arrangements for supplying energy stored within a vehicle to a power network, i.e. vehicle-to-grid [V2G] arrangements
- B60W 20/15: Control strategies specially adapted for achieving a particular effect
- B60W 30/18054: {at stand still, e.g. engine in idling state (hill holding B60W30/18118)}
- H02J 7/1438: {in combination with power supplies for loads other than batteries}
- H02J 7/1492: {by means of controlling devices between the generator output and the battery}
- H02J 7/342: {The other DC source being a battery actively interacting with the first one, i.e. battery to battery charging (with circuits for polarity protection H02J7/68)}
- H02J 7/42: with electronic devices having internal batteries, e.g. mobile phones
- H02J 7/80: including monitoring or indicating arrangements
- H02J 7/865: {Battery or charger load switching, e.g. concurrent charging and load supply (H02J7/50 takes precedence)}
- B60K 6/46: Series type
- B60W 2530/209: Fuel quantity remaining in tank
- H02J 2105/37: exchanging power with electric vehicles [EV] or with hybrid electric vehicles [HEV]
- Y02E 60/00: Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- 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
- B60W: CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

An electric vehicle is able to supply electric power to a vehicle outside and includes: an electric power generation part; an electric power storage part; and a control part that performs control such that electric power supplied from the electric power generation part or electric power supplied from the electric power storage part is automatically selected on a vehicle side in response to information obtained from an electric power supply target apparatus at the vehicle outside, and an electric power supply to the electric power supply target apparatus is performed.

## Claims

### Claim 1

An electric vehicle that is able to supply electric power to an outside of a vehicle, the electric vehicle comprising:
an electric power generation part;
an electric power storage part; and
a control part that performs control such that electric power supplied from the electric power generation part or electric power supplied from the electric power storage part is automatically selected on a vehicle side in response to information obtained from an electric power supply target apparatus at the outside of the vehicle, and an electric power supply to the electric power supply target apparatus is performed, wherein the vehicle and the electric power supply target apparatus perform an information exchange before starting charging/discharging,
the exchanged information are information regarding the vehicle and information regarding the electric power supply target apparatus,
the control part starts a current input/output process with the electric power supply target apparatus based on the information; determines whether the information regarding the electric power supply target apparatus is present or absent based on the exchanged information before starting charging/discharging, determines a type of the information regarding the electric power supply target apparatus when the information regarding the electric power supply target apparatus is present, and determines whether the electric power supply target apparatus deals with discharging or does not deal with discharging; and determines, based on a determination result, whether a charging control is performed, an electric vehicle electric supply mode in which an operation of the electric power generation part is stopped and the electric power stored by the electric power storage part is supplied to the electric power supply target apparatus is performed, or an engine electric supply mode in which the electric power generation part is operated and the electric power generated by the electric power generation part and the electric power stored by the electric power storage part are supplied to the electric power supply target apparatus is performed, and performs a control.

### Claim 2 (depends on 1)

The electric vehicle according to claim 1,
wherein the electric power generation part is an engine, and the electric power storage part is a battery.

### Claim 3 (depends on 2)

The electric vehicle according to claim 2,
wherein the control part selects an electric power supply of electric power generation by an engine which is the electric power generation part in a case where the electric power supply target apparatus is a movable electric power converter.

### Claim 4 (depends on 2)

The electric vehicle according to claim 2,
wherein the control part switches to an electric power supply by a battery which is the electric power storage part and continues an electric supply in a case where electric power generation fails during an electric supply of electric power generation by an engine which is the electric power generation part.

### Claim 5 (depends on 2)

The electric vehicle according to claim 2,
wherein the control part automatically switches an electric power supply by electric power generation of an engine which is the electric power generation part to an electric power supply by a battery which is the electric power storage part and performs an electric supply in a case where a remaining gasoline amount becomes a predetermined remaining amount.

### Claim 6 (depends on 1)

The electric vehicle according to claim 1,
wherein the control part selects an electric power supply from the electric power storage part in a case where the electric power supply target apparatus is other than a movable electric power converter.

### Claim 7 (depends on 1)

The electric vehicle according to claim 1,
wherein the control part selects an electric power supply from the electric power storage part in a case where the electric power supply target apparatus is provided in a home.

### Claim 8 (depends on 1)

The electric vehicle according to claim 1,
wherein the control part selects an electric power supply from the electric power storage part in a case where an electric supply is performed at a place where idling is regulated based on information obtained from the electric power supply target apparatus or position information of the electric vehicle.

### Claim 9

An electric vehicle control method in an electric vehicle that includes an electric power generation part and an electric power storage part and that is able to supply electric power to an outside of a vehicle, the electric vehicle control method including:
a step in which a control part performs control such that electric power supplied from the electric power generation part or electric power supplied from the electric power storage part is automatically selected on a vehicle side in response to information obtained from an electric power supply target apparatus at the outside of the vehicle, and an electric power supply to the electric power supply target apparatus is performed;
a step in which the vehicle and the electric power supply target apparatus perform an information exchange before starting charging/discharging, wherein the exchanged information are information regarding the vehicle and information regarding the electric power supply target apparatus;
a step in which the control part starts a current input/output process with the electric power supply target apparatus based on the information;
a step in which the control part determines whether the information regarding the electric power supply target apparatus is present or absent based on the exchanged information before starting charging/discharging, determines a type of the information regarding the electric power supply target apparatus when the information regarding the electric power supply target apparatus is present, and determines whether the electric power supply target apparatus deals with discharging or does not deal with discharging; and
a step in which the control part determines, based on a determination result, whether a charging control is performed, an electric vehicle electric supply mode in which an operation of the electric power generation part is stopped and the electric power stored by the electric power storage part is supplied to the electric power supply target apparatus is performed, or an engine electric supply mode in which the electric power generation part is operated and the electric power generated by the electric power generation part and the electric power stored by the electric power storage part are supplied to the electric power supply target apparatus is performed, and performs a control.