# US 11,993,159 B2 · Contactless charging system for an electric vehicle with target charge amount according to day-of-week

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- Number: US 11,993,159 B2
- Document ID: US11993159B2
- Status: Granted
- Kind: B2
- Application number: 17/216,638
- Filed: 2021-03-29
- Published: 2021-09-30
- Granted: 2024-05-28
- Earliest claimed: 2020-03-30
- Assignees: Honda Motor Co., Ltd.
- Applicants: Honda Motor Co., Ltd.
- Inventors: Naoya Sakakibara
- Web page: https://patentgrep.com/patent/US11993159B2

## CPC

- B60L 53/12: Inductive energy transfer
- B60L 53/305: {Communication interfaces}
- B60L 53/62: in response to charging parameters, e.g. current, voltage or electrical charge
- B60L 53/66: Data transfer between charging stations and vehicles
- B60L 53/68: Off-site monitoring or control, e.g. remote control
- B60L 58/13: Maintaining the SoC within a determined range
- B60L 58/16: responding to battery ageing, e.g. to the number of charging cycles or the state of health [SoH]
- 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 90/12: Electric charging stations
- Y02T 90/14: Plug-in electric vehicles
- Y02T 90/16: Information or communication technologies improving the operation of electric vehicles
- Y02T 90/167: Systems integrating technologies related to power network operation and communication or information technologies for supporting the interoperability of electric or hybrid vehicles, i.e. smartgrids as interface for battery charging of electric vehicles [EV] or hybrid vehicles [HEV]
- Y04S 30/12: Remote or cooperative charging
- 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
- Y04S: SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS

## Abstract

A contactless charging system (1) sends electrical power to charge a battery (4) equipped to a vehicle (3). A contactless charging device (2) includes: a wireless communication device (16) which acquires travel information and use information; a target setting unit (15) which creates a charging plan including the target SOC of the battery (4), based on the information; and a charge control unit (14) which controls the sending of electrical power for battery charging based on the target SOC. The target setting unit (15) divides the average travel distance and average charge rate decrease amount into seven day of week divisions of whole day units, classifies each day of week division into the plurality of a long distance group and a short distance group based on the average travel distance, and creates a target SOC based on the average charge rate decrease amount included in each group.

## Claims

### Claim 1

A contactless charging system which sends electrical power for battery charging by non-contact to charge a battery equipped to a vehicle by way of the electrical power for battery charging, the contactless charging system comprising:
an information acquirer which acquires travel information of the vehicle and use information of the battery;
a target configurator which sets a target charge amount of the battery, based on information acquired by the information acquirer; and
a charge controller which controls sending of the electrical power for battery charging based on the target charge amount,
wherein the target configurator:
divides the travel information and the use information into a plurality of divisions of whole day units,
calculates an average value for per-day travel distance of each day of the week as an average travel distance,
classifies a day-of-week division having the average travel distance less than a predetermined distance threshold into a short distance group,
calculates an average value for per-day decrease amount of charge rate of each day of the week as an average charge rate decrease amount, and
sets the target charge amount to a value within a range of less than a degradation suppressible charge amount corresponding to an upper limit of charge amount that can be charged without degrading the battery and in accordance with an average value for the average charge rate decrease amount over the short distance group, when the day-of-week division of a next use predicted day of the vehicle belongs to the short distance group.

### Claim 2 (depends on 1)

The contactless charging system according to claim 1, wherein the information acquirer acquires management information of the battery via a network from a server which manages a usage condition of the battery, and
wherein the target configurator sets the target charge amount based on the travel information, the use information and the management information.