# US 10,245,969 B2 · Power source control device and power source control method

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- Number: US 10,245,969 B2
- Document ID: US10245969B2
- Status: Granted
- Kind: B2
- Application number: 15/833,651
- Filed: 2017-12-06
- Published: 2018-06-14
- Granted: 2019-04-02
- Earliest claimed: 2016-12-09
- Assignees: Mitsubishi Jidosha Kogyo Kabushiki Kaisha
- Applicants: Mitsubishi Jidosha Kogyo Kabushiki Kaisha
- Inventors: Makoto Kamachi; Takayoshi Kawamoto; Naoki Imakita; Jun Soeda; Hirofumi Yagura; Hirotaka Sugimoto
- Web page: https://patentgrep.com/patent/US10245969B2

## CPC

- B60L 1/00: Supplying electric power to auxiliary equipment of vehicles (circuit arrangements for charging batteries H02J7/00)
- B60L 3/0046: {relating to electric energy storage systems, e.g. batteries or capacitors}
- B60L 50/00: Electric propulsion with power supplied within the vehicle (with power supply from force of nature, e.g. sun or wind, B60L8/00; for monorail vehicles, suspension vehicles or rack railways B60L13/00)
- B60L 53/00: Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L 58/12: responding to state of charge [SoC]
- B60L 58/20: having different nominal voltages
- B60L 2210/10: DC to DC converters
- B60L 2240/42: related to electric machines
- B60L 2250/16: by display
- 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 10/72: Electric energy management in electromobility
- Y02T 90/12: Electric charging stations
- 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
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

A power source control device includes a charging state detector configured to detect a charging state of a drive battery mounted on an electric vehicle and a power source mode switch configured to switch a power source mode of the electric vehicle, wherein the power source mode switch configured to switch the power source mode to an OFF mode in a case that charging of the drive battery is stopped while the power source mode is set at an ON mode.

## Claims

### Claim 1

A power source control device comprising:
a charging state detector configured to detect a charging state of a drive battery mounted on an electric vehicle; and
a power source mode switch configured to switch a power source mode of the electric vehicle,
wherein the power source mode switch is configured to automatically switch the power source mode from an ON mode in which a power source for an electric device is turned on to an OFF mode in which the power source is turned off in a case that charging of the drive battery is stopped while the power source mode is set at the ON mode.

### Claim 2 (depends on 1)

The power source control device according to claim 1, wherein in a case that a predetermined electric device inside the electric vehicle is being operated, the power source mode switch is configured to maintain the power source mode at the ON mode until a predetermined condition is satisfied after the stop of the charging of the drive battery.

### Claim 3 (depends on 2)

The power source control device according to claim 2, further comprising:
a first notifier configured to give a notification indicating that attention should be paid to lowering of a remaining amount of an auxiliary equipment battery for supplying electric power to the predetermined electric device.

### Claim 4 (depends on 1)

The power source control device according to claim 1, wherein the power source mode switch is configured to automatically switch the power source mode to the OFF mode after a predetermined time has passed after the stop of the charging of the drive battery.

### Claim 5 (depends on 4)

The power source control device according to claim 4, further comprising:
a second notifier configured to give a notification indicating that the power source mode is automatically switched to the OFF mode during the period until the predetermined time passes after the stop of the charging of the drive battery.

### Claim 6 (depends on 4)

The power source control device according to claim 4, wherein the power source mode switch is configured to change the predetermined time based on a power consumption of the electric device being operated.

### Claim 7 (depends on 4)

The power source control device according to claim 4, wherein the power source mode switch is configured to change the predetermined time based on a type of the electric device being operated.

### Claim 8 (depends on 1)

The power source control device according to claim 1, wherein the power source includes a power source that provide power to an auxiliary equipment of a vehicle.

### Claim 9 (depends on 1)

The power source control device according to claim 1, wherein the power source includes a power source for driving a vehicle.

### Claim 10

A power source control method comprising:
a detecting process of detecting a charging state of a drive battery mounted on an electric vehicle; and
a power source mode switching process of switching a power source mode of the electric vehicle,
wherein the power source mode switching process automatically switches the power source mode from an ON mode in which a power source for an electric device is turned on to an OFF mode in which the power source is turned off in a case that charging of the drive battery is stopped while the power source mode is set at the ON mode.

### Claim 11 (depends on 10)

The power source control method according to claim 10, wherein in a case that a predetermined electric device inside the electric device is being operated, the power source mode switching process maintains the power source mode at the ON mode until a predetermined condition is satisfied after the stop of the charging of the drive battery.

### Claim 12 (depends on 11)

The power source control method according to claim 11, further comprising:
a first notifying process of giving a notification indicating that attention should be paid to lowering of a remaining amount of an auxiliary equipment battery for supplying electric power to the predetermined electric device.

### Claim 13 (depends on 10)

The power source control method according to claim 10, wherein the power source mode switching process automatically switches the power source mode to the OFF mode after a predetermined time has passed after the stop of the charging of the drive battery.

### Claim 14 (depends on 13)

The power source control method according to claim 13, further comprising:
a second notifying process of giving a notification indicating that the power source mode is automatically switched to the OFF mode during the period until the predetermined time passes after the stop of the charging of the drive battery.

### Claim 15 (depends on 13)

The power source control method according to claim 13, wherein the power source mode switching process changes the predetermined time based on a power consumption of the electric device being operated.

### Claim 16 (depends on 13)

The power source control method according to claim 13, wherein the power source mode switching process changes the predetermined time based on a type of the electric device being operated.

### Claim 17 (depends on 10)

The power source control method according to claim 10, wherein the power source includes a power source that provide power to an auxiliary equipment of a vehicle.

### Claim 18 (depends on 10)

The power source control method according to claim 10, wherein the power source includes a power source for driving a vehicle.