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Power supply device for vehicle

A technology of a power supply device and a power storage device, which is applied in the direction of vehicle energy storage, control device, vehicle components, etc., can solve the problem of vehicle power loss and other problems

Active Publication Date: 2018-04-10
GS YUASA INT LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In such a conventional configuration, if the battery suddenly fails or the terminal for supplying power is disconnected, the vehicle may lose power. Therefore, it is desirable to make the battery a dual power supply configuration with redundancy.

Method used

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  • Power supply device for vehicle
  • Power supply device for vehicle
  • Power supply device for vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] First, an outline of a power supply device for a vehicle disclosed in this embodiment will be described.

[0032] A power supply device for a vehicle includes: a first power storage device having a first power storage element; a second power storage device having a second power storage element; A switch for switching between a state and a state in which the first power storage device and the second power storage device are disconnected; wherein the first power storage element and the second power storage element are in the SOC - An electric storage element having a flat region in the OCV characteristic, wherein the switch control unit executes switching from off to on of the switch when the first electric storage element and the second electric storage element are in the flat region in the SOC-OCV characteristic. switch.

[0033] In this configuration, even if there is a difference in SOC between the two power storage devices, the voltage difference between the two pow...

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PUM

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Abstract

A power supply device for a vehicle, which suppresses an overcurrent flowing through a switch when a switch is switched by making it redundant and suppressing a voltage difference between the batteries. A power supply device (S) for a vehicle includes: a first energy storage device (50A) having a first energy storage element (53A); a second energy storage device (50B) having a second energy storage element (53B); a switch (SW1) which switches between a state in which the first energy storage device (50A) and the second energy storage device (50B) are connected in parallel and a state in whichthe first energy storage device (50A) and the second energy storage device (50B) are separated from each other; and a switch controller (70). Each of the first energy storage element (53A) and the second energy storage element (53B) is an energy storage element having an SOC-OCV characteristic having a flat region thereon, and the switch controller (70) switches the switch from an off-state to anon-state when each of the first energy storage element (53A) and the second energy storage element (53B) is in the flat region of the SOC-OCV characteristic.

Description

technical field [0001] The invention relates to a power supply device for a vehicle. Background technique [0002] At present, the development of automatic braking system and autonomous driving technology is prevailing among various automobile manufacturers. The electrification trend of such vehicles further increases the importance of the power supply device of the vehicle. As a power source for vehicles, a power supply consisting of a lead battery and an alternator is currently the mainstream. In such a conventional structure, if the battery suddenly fails or the terminal for supplying power is disconnected, the vehicle may lose power. Therefore, it is desirable to make the battery redundant with a dual power supply configuration. Document 1 below describes that a power supply device for a vehicle includes a control device, an electric load, a main relay, a starter, an alternator, a lead storage battery, a nickel-metal hydride rechargeable battery, and the like. [0003...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/42H01M10/48B60L11/18B60L50/64
CPCB60L58/12H01M10/425H01M10/482H02J7/0048H02J7/0013H01M10/486B60L50/64H01M50/249H01M10/4207H02J7/0031B60L58/21B60L2240/36H01M4/5825H01M4/587H01M10/0525H01M2220/20Y02E60/10Y02T10/70H01M2010/4271
Inventor 白石刚之中本武志
Owner GS YUASA INT LTD