Power supply control system and industrial vehicle

Patent metadata

Field	Value
Publication number	US-12420668-B2
Application number	US-202218569471-A
Country	US
Kind code	B2
Filing date	Mar 23, 2022
Priority date	Jun 14, 2021
Publication date	Sep 23, 2025
Grant date	Sep 23, 2025

Abstract

A power supply control system includes: a vehicle control device including a reception unit, an electrical connector, and a communication connector; connection determination units; and supply control units. The supply control units determine that the battery is the first battery and permits the power supply to the reception unit in a case where it is determined that the communication connector is connected and there is no power supply to the reception unit, determine that the battery is unknown and prohibits the power supply to the reception unit in a case where it is determined that the communication connector is not connected and there is no power supply to the reception unit, and determine that the battery is the second battery in a case where it is determined that the communication connector is not connected and there is power supply to the reception unit.

First claim

The invention claimed is:

1. A power supply control system determining a type of a battery mounted on a vehicle and controlling power supply to the vehicle by the battery, the power supply control system comprising:
a vehicle control device including a receptor configured to receive power from a first battery having a battery control device or a second battery not having a battery control device, an electrical connector electrically connected to the battery, and a communication connector connected to the battery control device so as to be capable of communicating information;
a connection determination unit configured to determine whether or not the communication connector is connected in a case where the battery is connected to the electrical connector; and
a supply controller configured to control availability of power supply from the battery to the receptor based on a determination result of the connection determination unit and a power supply status to the receptor, wherein
the supply controller
determines that the battery is the first battery, and permits power supply to the receptor in a case where it is determined that the communication connector is connected and there is no power supply to the receptor,
determines that the battery is unknown and prohibits power supply to the receptor in a case where it is determined that the communication connector is not connected and there is no power supply to the receptor, and
determines that the battery is the second battery in a case where it is determined that the communication connector is not connected and there is power supply to the receptor.

2. The power supply control system according to claim 1 , further comprising:
a storage unit configured to store mounted battery information related to mounting of the battery; and
a comparison unit configured to compare the mounted battery information stored in the storage unit with battery information related to identification of the battery connected to the electrical connector.

3. The power supply control system according to claim 2 , wherein the comparison unit is provided in the vehicle control device.

4. The power supply control system according to claim 2 , wherein the comparison unit is provided in the battery control device.

5. The power supply control system according to claim 1 , wherein the connection determination unit determines whether or not the communication connector is connected based on whether or not CAN communication between the vehicle control device and the battery control device is successfully connected.

6. The power supply control system according to claim 1 , wherein the connection determination unit includes a connection detection circuit configured to detect physical connection of the battery to the communication connector, and determines whether or not the communication connector is connected based on an open or closed state of the connection detection circuit.

7. The power supply control system according to claim 1 , wherein the supply controller generates state information indicating that a communication state is abnormal in a case of determining that the battery is the second battery.

8. An industrial vehicle mounted with the vehicle control device constituting the power supply control system according to claim 1 .

Assignees

• Toyota Jidoshokki Kk

Inventors

• Sato Takuya
• Maruyama Hitoshi

Classifications

• H02J7/47

  Arrangements for checking compatibility or authentication between one component, e.g. a battery or a battery charger, and another component, e.g. a power source · CPC title

• H01M10/48 Primary

  Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte (constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals, H01M50/569) · CPC title

• B60L2200/44

  Industrial trucks or floor conveyors · CPC title

• B60L3/04

  Cutting off the power supply under fault conditions (protective devices and circuit arrangements in general H01H; H02H) · CPC title

• B60L50/60

  using power supplied by batteries (in combination with fuel cells B60L50/75) · CPC title