# US 9,751,418 B2 · Charge managing system, charger, and program

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- Number: US 9,751,418 B2
- Document ID: US9751418B2
- Status: Granted
- Kind: B2
- Application number: 14/238,411
- Filed: 2012-07-09
- Published: 2014-10-30
- Granted: 2017-09-05
- Earliest claimed: 2011-08-12
- Assignees: NEC Corporation
- Applicants: Takayuki Nyu
- Inventors: Takayuki Nyu
- Web page: https://patentgrep.com/patent/US9751418B2

## CPC

- B60L 53/305: {Communication interfaces}
- B60L 53/11: {DC charging controlled by the charging station, e.g. mode 4}
- B60L 53/30: Constructional details of charging stations
- B60L 53/64: Optimising energy costs, e.g. responding to electricity rates
- B60L 53/665: {Methods related to measuring, billing or payment}
- B60L 53/68: Off-site monitoring or control, e.g. remote control
- H01M 10/46: Accumulators structurally combined with charging apparatus (circuits for charging H02J7/00)
- H02J 7/44: between battery management systems and power sources
- H02J 7/485: {with provisions for charging different types of batteries}
- B60L 2240/70: Interactions with external data bases, e.g. traffic centres
- B60L 2240/80: Time limits
- H02J 2105/37: exchanging power with electric vehicles [EV] or with hybrid electric vehicles [HEV]
- Y02E 60/10: Energy storage using batteries
- 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
- 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
- Y04S 30/14: Details associated with the interoperability, e.g. vehicle recognition, authentication, identification or billing
- 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
- H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- 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 charge managing system includes a power receiving device 102 for receiving, from a commercial power supply 1, power to be used for charge, a storage battery 104 for accumulating power to be used for charge, a rapid charger 105 for performing charge to an electric vehicle, and a charge managing server 106 for controlling the rapid charger 105 and calculating a charge capacity of the rapid charger 105. The charge managing server 106 includes a communicating unit 1061 for acquiring information on power that can be used for charge from the power receiving device 102 and the storage battery 104, and rated output information on the rapid charger 105, and a charge-capacity calculating unit 1062 for calculating a charge capacity of the rapid charger 105, based on power that can be used for charge from the power receiving device 102 and the storage battery 104, and rated output power of the rapid charger 105.

## Claims

### Claim 1

A charge managing system for performing charge to an electric vehicle, the system comprising:
a power receiving device for receiving, from an external device, power to be used for charge;
a storage battery for accumulating power to be used for charge to the electric vehicle;
a charger for performing charge to the electric vehicle; and
a charge managing server for controlling the charger and calculating a charge power of the charger to charge the electric vehicle, wherein
the charge managing server includes:
a communicating unit for acquiring information on power that can be used for charge from the power receiving device, power that can be used for charge from the storage battery, and rated output information on the charger, and
a charge-capacity calculating unit for calculating a charge power of the charger to charge the electric vehicle, based on power that can be used for charge from the power receiving device, power that can be used for charge from the storage battery, and the rated output power of the charger.

### Claim 2 (depends on 1)

The charge managing system according to claim 1, wherein
the charge-capacity calculating unit
sets the smaller value of a sum of power, which can be used for charge from the power receiving device and the storage battery, and rated output power of the charger to be a charge power of the charger, when a charge rate of the storage battery is at least a threshold value, and
sets the smaller value of power that can be used for charge from the power receiving device and rated output power of the charger to be a charge power of the charger, when a charge rate of the storage battery is less than a threshold value.

### Claim 3 (depends on 1)

The charge managing system according to claim 1, further comprising a plurality of chargers, wherein
the charge-capacity calculating unit sets a value, which is obtained by subtracting charge power that is being used by other chargers from a sum of power that can be used for charge from the power receiving device and the storage battery, to be a charge power of the charger.

### Claim 4 (depends on 1)

The charge managing system according to claim 1, wherein
the charge managing server comprises a charge remaining-time calculating unit that calculates a charge remaining time of the electric vehicle charged by the charger, wherein
the charge remaining-time calculating unit
calculates a charge remaining time by a product of a charge remaining time at a time point when the charge power of the charger changed from the charge power at a charge start time, and an available capacity rate at present of the electric vehicle that is normalized by an available capacity rate (1−a charge rate) of the electric vehicle at the time point of the change.

### Claim 5 (depends on 4)

The charge managing system according to claim 4, wherein
the charge remaining-time calculating unit sets a time point when a charge rate of the storage battery strode a threshold value as a time point when the charge power of the charger changed from the charge power at a charge start time.

### Claim 6 (depends on 4)

The charge managing system according to claim 4, wherein
the charge remaining-time calculating unit sets a time point when power that can be used for charge from the power receiving device changed from power at a charge start time as a time point when the charge power of the charger changed from the charge power at a charge start time.

### Claim 7 (depends on 1)

The charge managing system according to claim 1, comprising an information providing server that presents information on a charge power of the charger calculated by the charge managing server.

### Claim 8

A charger that performs charge to an electric vehicle, wherein
the charger receives a charge power of the charger calculated by a charge managing server that controls the charger and that calculates a charge power of the charger, and
the charge power is calculated based on power that can be used for charge from a power receiving device which receives power to be used for charge from an external device, power that can be used for charge from a storage battery that accumulates power to be used for charge, and rated output power of the charger.

### Claim 9 (depends on 8)

The charger according to claim 8, wherein
the charger receives a charge remaining time of the charger calculated by the charge managing server, from the charge managing server, and
the charge remaining time is calculated by a product of a charge remaining time at a time point when the charge power of the charger changed from the charge power at a charge start time, and an available capacity rate, at the current time, of the electric vehicle that is normalized by an available capacity rate (1−a charge rate) of the electric vehicle at the time point of the change.

### Claim 10

A non-transient tangible computer readable medium containing instruction which, when executed by a computer, allow the computer to perform the following instructions:
a communicating unit that acquires information on power that can be used for charge from a power receiving device which receives power to be used for charge from an external device, power that can be used for charge from a storage battery that accumulates power to be used for charge, and rated output information on a charger that performs charge to an electric vehicle, and
a charge-capacity calculating unit for calculating a charge power of the charger, based on power that can be used for charge from the power receiving device, power that can be used for charge from the storage battery, and rated output power of the charger.

### Claim 11

A charge managing system for performing charge to an electric vehicle, the system comprising:
a power receiving device for receiving, from an external device, power to be used for charge to the electric vehicle;
a plurality of chargers for performing charge to the electric vehicle; and
a charge managing server for controlling the chargers, wherein
the charge managing server includes:
a charge-capacity calculating unit for setting a value, which is obtained by subtracting charge power that is being used by other chargers from the power that can be used for charge from the power receiving device, to be charge power of a charger to the electric vehicle.

### Claim 12

A charger that performs charge to an electric vehicle, wherein
the charger receives charge power of the charger calculated by a charge managing server that controls the charger and that calculates the charge power of the charger to the electric vehicle, and
the charge power of the charger to the electric vehicle is a value which is obtained by subtracting charge power that is being used by other chargers from the power that can be used for charge from the power receiving device.