In-vehicle system and junction box
AssigneeYazaki Corporation
InventorsKazuya Tsubaki, Kazuo Sugimura, Mitsuaki Morimoto, Eiichiro Oishi
Life of this patent
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Abstract
An in-vehicle system is provided with a front J/B and a first voltage detection unit. The front J/B has a main relay unit, a second voltage detection unit, and a second MCU. Based on detection results detected by the first voltage detection unit and a second voltage detection unit when the main relay unit is subjected to on/off operations, the second MCU monitors whether each of the main relay unit, the first voltage detection unit, and the second voltage detection unit has abnormality or not.
Claims13
An in-vehicle system comprising:
- a junction box disposed at least one of front and rear of a battery pack provided in an electric vehicle;
- and
- a first voltage detection unit that detects a voltage value of the battery pack, wherein
- the junction box has
- a first relay unit that is electrically connected to the battery pack and a drive source, and switches a state of the battery pack and the drive source to a power-distributed state or a shut-off state by an on/off operation,
- a second voltage detection unit that is electrically connected in parallel with the battery pack, and detects a voltage value of the battery pack, and
- a controller configured to control the on/off operation of the first relay unit, and
- the controller monitors whether each of the first relay unit, the first voltage detection unit, and the second voltage detection unit has an abnormality or not based on a detection result detected by each of the first voltage detection unit and the second voltage detection unit when the first relay unit carries out the on/off operation.
A junction box disposed at least one of front and rear of a battery pack provided in an electric vehicle and having a first voltage detection unit capable of detecting a voltage value, the junction box comprising:
- a first relay unit that is electrically connected to the battery pack and a drive source, and switches a state of the battery pack and the drive source to a power-distributed state or a shut-off state by an on/off operation;
- a second voltage detection unit that is electrically connected in parallel with the battery pack, and detects a voltage value of the battery pack;
- and
- a controller configured to control the on/off operation of the first relay unit, wherein
- the controller monitors whether each of the first relay unit, the first voltage detection unit, and the second voltage detection unit has an abnormality or not based on a detection result detected by each of the first voltage detection unit and the second voltage detection unit when the first relay unit carries out the on/off operation.
Dependencies are inferred from the claim text.