# US 2021/0175751 A1 · Charging system, charging station, movable body, and charging method

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- Number: US 2021/0175751 A1
- Document ID: US20210175751A1
- Status: Published application
- Kind: A1
- Application number: 17/254,604
- Filed: 2019-03-14
- Published: 2021-06-10
- Earliest claimed: 2018-06-29
- Assignees: Mitsubishi Heavy Industries, Ltd.
- Applicants: Mitsubishi Heavy Industries, Ltd.
- Inventors: Syuhei Kobori; Ken Onishi; Noriko Onishi; Koji Shukutani; Hiroyoshi Okazaki; Hiroyoshi Kojima
- Web page: https://patentgrep.com/patent/US20210175751A1

## CPC

- H02J 7/60: including safety or protection arrangements
- H02J 50/12: of the resonant type
- B25J 19/005: {using batteries, e.g. as a back-up power source}
- B60L 50/60: using power supplied by batteries (in combination with fuel cells B60L50/75)
- B60L 53/122: Circuits or methods for driving the primary coil, e.g. supplying electric power to the coil
- B60L 53/126: Methods for pairing a vehicle and a charging station, e.g. establishing a one-to-one relation between a wireless power transmitter and a wireless power receiver
- B60L 53/37: using optical position determination, e.g. using cameras
- B60L 53/39: with position-responsive activation of primary coils
- B60L 53/66: Data transfer between charging stations and vehicles
- G05D 1/0225: {involving docking at a fixed facility, e.g. base station or loading bay (parking aids B62D15/027)}
- G05D 1/0276: {using signals provided by a source external to the vehicle (involving a plurality of vehicles G05D1/0287; automatically controlling vehicle speed responsive to externally generated signals B60K31/0058)}
- H02J 7/04: Regulation of charging current or voltage
- H02J 7/40: characterised by the exchange of charge or discharge related data
- H02J 7/42: with electronic devices having internal batteries, e.g. mobile phones
- H02J 50/80: involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
- H02J 50/90: involving detection or optimisation of position, e.g. alignment
- B60L 2200/40: Working vehicles
- B60L 2260/32: Auto pilot mode
- B60M 7/003: {for vehicles using stored power (e.g. charging stations)}
- 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
- H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- B25J: MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES ({manipulators specially adapted for use in surgery A61B34/70; manipulators used in cleaning hollow articles B08B9/04}; manipulators associated with rolling mills B21B39/20; manipulators associated with forging machines B21J13/10; {manipulators associated with picking-up and placing mechanisms B23P19/007}; means for holding wheels or parts thereof B60B30/00; {vehicles with ground-engaging propulsion means, e.g. walking members B62D57/02, B62D57/032; devices for picking-up and depositing articles or materials between conveyors B65G47/90, B65G47/91; manipulators with gripping or holding means for transferring packages B65H67/065}; cranes B66C; {manipulators used in the protection or supervision of pipe-line installations F17D5/00; walking equipment adapted for nuclear steam-generators F22B37/006}; manipulators specially adapted for, or associated with, nuclear reactors G21C; {apparatus used for handling wafers during manufacture or treatment of semiconductor H10P72/50})
- 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
- G05D: SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- B60M: POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES (control of points and safety arrangements along railway lines B61L; construction of rails and points in general E01B)
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

A charging system includes: a movable body including a frame and a battery provided in the frame; and a charging station configured to charge the battery. The movable body includes: a pressure detection unit configured to detect pressure in the frame; and a charging permission signal output unit configured to output a charging permission signal indicating that the pressure in the frame is detected to be equal to or higher than a threshold pressure. The charging station includes: a charging permission signal acquisition unit configured to acquire the charging permission signal from the charging permission signal output unit; and a power transmission unit configured to execute non-contact charging of the battery when the charging permission signal is acquired by the charging permission signal acquisition unit.

## Claims

### Claim 1

A charging system comprising:
a movable body including a frame and a battery provided in the frame; and
a charging station configured to charge the battery, wherein
the movable body includes
a pressure detection unit configured to detect pressure in the frame, and
a charging permission signal output unit configured to output a charging permission signal indicating that the pressure in the frame is detected to be equal to or higher than a threshold pressure, and
the charging station includes
a charging permission signal acquisition unit configured to acquire the charging permission signal from the charging permission signal output unit, and
a power transmission unit configured to execute non-contact charging of the battery when the charging permission signal is acquired by the charging permission signal acquisition unit.

### Claim 2 (depends on 1)

The charging system according to claim 1, wherein
the charging permission signal output unit stops outputting the charging permission signal when the pressure in the frame is detected to be lower than the threshold pressure, and
the power transmission unit stops the non-contact charging of the battery when the charging permission signal is not acquired by the charging permission signal acquisition unit.

### Claim 3 (depends on 1)

The charging system according to claim 1, wherein
the movable body includes a movable body signal output unit configured to output a signal to a region that the movable body signal output unit faces,
the charging station includes a station signal acquisition unit configured to acquire the signal from the movable body signal output unit, and
the power transmission unit executes the non-contact charging of the battery when the signal from the movable body signal output unit is received by the station signal acquisition unit and the charging permission signal is acquired by the charging permission signal acquisition unit.

### Claim 4 (depends on 3)

The charging system according to claim 3, wherein
the charging station includes a station signal output unit configured to output a signal to a region that the station signal output unit faces,
the movable body includes a movable body signal acquisition unit configured to acquire the signal from the station signal output unit when positioned in the region that the station signal output unit faces, and
the movable body signal output unit outputs a signal when the signal from the station signal output unit is acquired by the movable body signal acquisition unit.

### Claim 5 (depends on 1)

The charging system according to claim 1, wherein
the movable body includes a power reception coil connected with the battery,
the power transmission unit of the charging station includes
a power transmission coil configured to transmit power to the power reception coil in a non-contact manner,
a movement unit configured to move the power transmission coil toward the power reception coil, and
a power transmission control unit configured to cause the power transmission coil to perform power transmission,
the movement unit moves the power transmission coil to a position facing the power reception coil, and
the power transmission control unit causes the power transmission coil to perform power transmission when the power transmission coil is at the position facing the power reception coil and the charging permission signal is acquired by the charging permission signal acquisition unit.

### Claim 6 (depends on 5)

The charging system according to claim 5, wherein
the charging station includes an interface position detection unit configured to detect whether the power transmission coil and the power reception coil are at appropriate positions, and
the power transmission control unit causes the power transmission coil to perform power transmission when the power transmission coil and the power reception coil are at the appropriate positions.

### Claim 7 (depends on 1)

The charging system according to claim 1, wherein the frame of the movable body has an internal pressure explosion-proof structure.

### Claim 8

A charging station for charging a movable body that includes a frame, a battery provided in the frame, and a pressure detection unit configured to detect pressure in the frame, the charging station comprising:
a charging permission signal acquisition unit configured to acquire, from the movable body, a charging permission signal indicating that the pressure in the frame is equal to or higher than a threshold pressure; and
a power transmission unit configured to execute non-contact charging of the battery when the charging permission signal is acquired by the charging permission signal acquisition unit.

### Claim 9

A movable body comprising:
a frame;
a pressure detection unit configured to detect pressure in the frame;
a charging permission signal output unit configured to output, to a charging station, a charging permission signal indicating that the pressure in the frame is detected, by the pressure detection unit, to be equal to or higher than a threshold pressure; and
a power reception unit configured to be charged in a non-contact manner from the charging station having acquired the charging permission signal.

### Claim 10

(canceled)