Charge / discharge device and charge / discharge method
The charging and discharging device detects circuit abnormalities by measuring voltages at the inlet and outlet, disconnecting conductive paths, and identifying faults, ensuring safe charging and discharging operations.
WO2026105269A1PCT designated stage Publication Date: 2026-05-21MITSUBISHI MOTORS CORP
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Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- MITSUBISHI MOTORS CORP
- Filing Date
- 2024-11-14
- Publication Date
- 2026-05-21
AI Technical Summary
Technical Problem
Existing charging and discharging devices for plug-in hybrid vehicles fail to reliably detect circuit abnormalities, leading to the risk of high voltage being applied to non-compatible electrical devices, and make maintenance difficult.
Method used
A charging and discharging device with a control unit, power conversion unit, and voltage measuring units to detect circuit abnormalities by measuring voltages at the inlet and outlet, allowing for the disconnection of conductive paths and identifying fault locations before charging, thereby preventing high voltage application to the outlet.
Benefits of technology
The device effectively identifies circuit faults and prevents high voltage application to non-compatible devices, facilitating safer charging and discharging operations.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure JP2024040507_21052026_PF_FP_ABST
Abstract
A charge / discharge device 1 comprises: a power conversion unit 7 that converts power supplied via an inlet 4 into DC power suitable for a battery 2 and converts the DC power of the battery 2 into power to be discharged from an outlet 5; a first voltage measurement unit Sa that measures a voltage Va between the inlet 4 and the power conversion unit 7; a second voltage measurement unit Sb that measures a voltage Vb between the outlet 5 and the power conversion unit 7; and a control unit 6 that controls conduction between the power conversion unit 7 and the inlet 4 and conduction between the power conversion unit 7 and the outlet 5. When the battery 2 is discharged in a state in which the inlet 4 and the outlet 5 are not conducted with the power conversion unit 7, the control unit 6 determines a circuit abnormality between the inlet 4 and the power conversion unit 7 on condition that the voltage Va is higher than or equal to a prescribed first threshold Th1, and determines a circuit abnormality between the outlet 5 and the power conversion unit 7 on condition that the voltage Vb is higher than or equal to a prescribed second threshold Th2.
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