Abnormality diagnosing system, and power supply system for vehicle

A technology for abnormal diagnosis and power supply system, which is applied in the direction of electrical devices, transmission systems, vehicle components, etc., and can solve problems such as inability to accurately obtain sensor information

Pending Publication Date: 2021-10-22
SANYO ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] If the sensor used in the power system is abnormal or the wire harness connected to the sensor is disconnected, the sensor information will not be acquired accurately

Method used

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  • Abnormality diagnosing system, and power supply system for vehicle
  • Abnormality diagnosing system, and power supply system for vehicle
  • Abnormality diagnosing system, and power supply system for vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] figure 1 It is a figure for demonstrating the electric vehicle 1 equipped with the power supply system 10 which concerns on embodiment of this invention. It is assumed that the electric vehicle 1 is a pure EV not equipped with an internal combustion engine.

[0026] The power supply system 10 is connected to a motor 50 via a relay RY1 and an inverter 40 . During power running, the inverter 40 converts DC power supplied from the power supply system 10 into AC power and supplies it to the motor 50 . During regeneration, the AC power supplied from the motor 50 is converted into DC power and supplied to the power supply system 10 . The motor 50 is a three-phase AC motor, and rotates according to the AC power supplied from the inverter 40 during power running. During regeneration, the decelerated rotational energy is converted into AC power and supplied to the inverter 40 .

[0027] Relay RY1 is a contactor inserted between wirings connecting power supply system 10 and i...

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PUM

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Abstract

A control unit (16) executes a plurality of abnormality diagnosing processes within a vehicle in order to identify correctly the cause of an abnormality that has occurred in the vehicle. The abnormality diagnosing processes include, among the plurality of abnormality diagnosing processes, abnormality diagnosing processes of a first type for detecting abnormalities that may occur as a result of a plurality of types of cause, and abnormality diagnosing processes of a second type for detecting abnormalities that occur as a result of one type of cause. If an abnormality is detected by an abnormality diagnosing process of the first type, the control unit (16) identifies the cause of the abnormality detected by the abnormality diagnosing process of the first type on the basis of the diagnosis result from an abnormality diagnosing process of the second type.

Description

technical field [0001] The present invention relates to an abnormality diagnosis system mounted on a vehicle and a power supply system for the vehicle. Background technique [0002] In recent years, hybrid vehicles (HV), plug-in hybrid vehicles (PHV), and electric vehicles (EV) have become popular. These electric vehicles are equipped with a power supply system including a secondary battery as a key device. [0003] If there is an abnormality in the sensor used in the power supply system or the wire harness connected to the sensor is disconnected, it will not be possible to obtain accurate sensor information. As a countermeasure against this, failure diagnosis processing is performed to monitor the states of sensors, harnesses, and the like (for example, refer to Patent Documents 1 and 2). There are two types of fault diagnosis, a type in which a fault cause can be thought of as multiple causes (first type) and a type in which a fault cause can be identified as one cause (...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/48B60R16/02B60L3/00G01R31/389G01R31/388G01R31/396
CPCB60R16/02Y02E60/10B60L3/0046B60L2240/547G01R31/006H04L67/12G07C5/0808H01M10/482G01R31/396G01R31/3835H01M50/51H01M2220/20H01M10/48
Inventor 崎山善贵小林宪令迎秀嗣
Owner SANYO ELECTRIC CO LTD
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