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Power supply system

A technology of power supply system and power supply, which is applied in the direction of control system, control/regulation system, collector, etc., to ensure the judgment time and prevent the effect of misjudgment

Pending Publication Date: 2020-12-01
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In addition, when two power supply devices are connected using a voltage converter as in the power supply system of Patent Document 1, if the voltage converter fails, a through current of an unexpected direction and magnitude may flow.

Method used

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Examples

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Embodiment Construction

[0031] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0032] figure 1 It is a diagram showing the structure of an electric vehicle V (hereinafter, simply referred to as a "vehicle") equipped with a power supply system 1 according to the present embodiment.

[0033] The vehicle V includes: drive wheels W; a drive motor M connected to the drive wheels W; and a power supply system 1 that transmits electric power between the drive motor M and a first battery B1 and a second battery B2 described later. transmission. In addition, in the present embodiment, the vehicle V is described as an example in which acceleration and deceleration are mainly performed by the power generated by the drive motor M, but the present invention is not limited thereto. The vehicle V may be a so-called hybrid vehicle in which a drive motor M and an engine are mounted as power generation sources. In addition, in the present embodiment, the power ...

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PUM

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Abstract

The problem to be solved by the present invention is to provide a power supply system capable of quickly determining a failure of a voltage converter. In order to solve the problem, the invention provides a power supply system. The power supply system includes: a first power circuit having a first battery, a second power circuit having a second battery, a voltage converter which converter voltagebetween the first power circuit and second power circuit, a current sensor which acquires a passing current value Iact of the voltage converter, a passing power control unit which operates the voltageconverter, and a failure determination unit which determines failure of the voltage converter. The failure determination unit determines that the voltage converter has failed in a case of the passingcurrent value Iact becoming negative in a state in which the passing power control unit is not operating the high-arm element of the voltage converter to ON, and makes a time from when the passing current value Iact first became negative until determining that the voltage converter failed shorter as the passing current value Iact increases to the negative side.

Description

technical field [0001] The invention relates to a power supply system. More specifically, it relates to a power supply system comprising: a first circuit having a first power supply; a second circuit having a second power supply; and a voltage converter between the first and second circuits Convert voltage. Background technique [0002] In recent years, the development of electric vehicles such as electric transportation equipment including a drive motor as a power generation source, and a hybrid vehicle including a drive motor and an internal combustion engine as a power generation source has been actively developed. Such an electric vehicle is also equipped with a power supply device such as an accumulator (battery, capacitor, etc.) and a fuel cell for supplying electric energy to a drive motor. In addition, in recent years, an electric vehicle in which a plurality of power supply devices having different characteristics is mounted has also been developed. [0003] In P...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/08H02M3/156H02M7/797H02M1/32H02P27/08B60L3/00B60L1/00
CPCH02M1/08H02M3/156H02M7/797H02M1/32H02P27/085B60L1/00B60L3/00H02M1/325B60R16/033H02H7/1213Y02T10/70H02H7/12H02H1/0007
Inventor 大岩久也
Owner HONDA MOTOR CO LTD