WORK VEHICLE

• US 20160221454A1
• Filed: 08/02/2013
• Published: 08/04/2016
• Est. Priority Date: 08/02/2013
• Status: Active Grant

• Current Assignee: Komatsu Ltd.
• Original Assignee: Komatsu Ltd.
• Inventors: Dougan, Yoshihiro
• Granted Patent: US 9,579,988 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B60L 2200/42 Fork lift trucks
• CPC Class Codes: B60L 2240/545 Temperature
• CPC Class Codes: B60L 50/66 Arrangements of batteries
• CPC Class Codes: B60L 53/11 DC charging controlled by the charging station, e.g. mode 4
• CPC Class Codes: B60L 53/14 Conductive energy transfer
• CPC Class Codes: B60L 53/16 Connectors, e.g. plugs or sockets, specially adapted for charging electric vehicles
• CPC Class Codes: B60L 53/62 in response to charging parameters, e.g. current, voltage or electrical charge
• CPC Class Codes: B60L 53/66 Data transfer between charging stations and vehicles
• CPC Class Codes: B60L 58/25 by controlling the electric load
• CPC Class Codes: B66F 9/06 movable, with their loads, on wheels or the like, e.g. fork-lift trucks vehicle aspects B60 - B62; vehicles predominantly for transporting loads and modified to facilitate loading or unloading B60P1/00; low-lift hand trucks for transporting goods B62B3/06
• CPC Class Codes: B66F 9/07504 Accessories, e.g. for towing, charging, locking
• CPC Class Codes: B66F 9/07572 Propulsion arrangements
• CPC Class Codes: B66F 9/24 Electrical devices or systems
• CPC Class Codes: H01M 10/06 Lead-acid accumulators semi-lead accumulators H01M10/20
• CPC Class Codes: H01M 10/441 for several batteries or cells simultaneously or sequentially
• CPC Class Codes: H01M 10/443 in response to temperature
• CPC Class Codes: H01M 10/486 for measuring temperature
• CPC Class Codes: H01M 10/613 Cooling or keeping cold
• CPC Class Codes: H01M 10/617 for achieving uniformity or desired distribution of temperature
• CPC Class Codes: H01M 10/625 Vehicles
• CPC Class Codes: H01M 10/63 : Control systems charging or discharging in response to temperature H01M10/44 , H01M10/443; measurement of temperature H01M10/48 , H01M10/486
• CPC Class Codes: H01M 10/6563 : with forced flow, e.g. by blowers
• CPC Class Codes: H01M 2220/20 : Batteries in motive systems, e.g. vehicle, ship, plane
• CPC Class Codes: H02J 7/00034 : Charger exchanging data with an electronic device, i.e. telephone, whose internal battery is under charge
• CPC Class Codes: Y02E 60/10 : Energy storage using batteries
• CPC Class Codes: Y02T 10/70 : Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 : Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 90/12 : Electric charging stations
• CPC Class Codes: Y02T 90/14 : Plug-in electric vehicles
• CPC Class Codes: Y02T 90/16 : Information or communication technologies improving the operation of electric vehicles

Abstract

A work vehicle which is provided with a battery and at least one motor, the motor being driven by electric power supplied from the battery, the work vehicle including: a charging terminal to which a feed terminal provided in a charging device disposed at an outside of the work vehicle is connected at a time of charging the battery; a communication terminal to which a communication terminal for the charging device to communicate with the work vehicle is connected at the time of charging the battery; and an in-vehicle controller which controls the work vehicle, and controls the charging device through the communication terminal at the time of charging the battery.

Claims

1. A work vehicle which is provided with a battery and at least one motor, the motor being driven by electric power supplied from the battery, the work vehicle comprising:

a charging terminal to which a feed terminal provided in a charging device disposed at an outside of the work vehicle is connected at a time of charging the battery;

a communication terminal to which a communication terminal for the charging device to communicate with the work vehicle is connected at the time of charging the battery; and

an in-vehicle controller which controls the work vehicle, and controls the charging device through the communication terminal at the time of charging the battery.

2. The work vehicle according to claim 1, further comprising a switch which is provided between the charging terminal and a terminal of the battery.

3. The work vehicle according to claim 1,

wherein the battery supplies electric power to be consumed by a control unit which is provided in the charging device to control the charging of the battery at the time of charging.

4. The work vehicle according to claim 1, further comprising:

a start unit which makes the in-vehicle controller start in response to a signal from the charging device at the time of charging the battery; and

a signal terminal which is connected to a terminal to transmit a signal from the charging device at the time of charging the battery.

5. The work vehicle according to claim 4,

wherein the charging terminal, the communication terminal, the signal terminal are disposed in a same connector.

6. The work vehicle according to claim 4,

wherein the in-vehicle controller,

makes the switch enter into a connection state to supply electric power from the battery to the charging device after starting by the start unit,

makes the charging device start charging of the battery when a start completion signal is received from the charging device through the communication terminal, and

makes the charging device stop charging of the battery when a charge amount of the battery is equal to or more than a predetermined amount.

7. The work vehicle according to claim 6,

wherein the in-vehicle controller makes the switch enter into a non-connection state to stop supplying of the electric power to the charging device when a stop signal is received from the charging device.