The invention relates to a semiconductor fuse device (200) for safely disconnecting an electrical appliance (112) from a power supply (111) of a battery-powered vehicle. The semiconductor safety device (200) comprises at least one semiconductor switching element (211) which can be switched between the power supply (111) and the electric equipment (112). The semiconductor switch element (211) is provided with a gate control interface (212) used for controlling the semiconductor switch element (211) to be switched on and switched off; a drive circuit (221) designed to apply a drive voltage (223) to the gate control interface (212) of the at least one semiconductor switching element (211), which drive voltage is less than a predetermined gate threshold voltage (501) of the semiconductor switching element (211); a measurement circuit (222) designed to determine a gate charge at the gate control interface (212); and a controller (220) designed to detect a drift of the gate threshold voltage (501) based on the gate charge and to indicate a fault (501) of the at least one semiconductor switching element (211) when the gate threshold voltage drift is detected.
本发明涉及一种用于将用电设备(112)与电池电动车辆的电源(111)安全断开的半导体保险装置(200)。半导体保险装置(200)包括:至少一个半导体开关元件(211),其能够在电源(111)和用电设备(112)之间进行切换。半导体开关元件(211)具有用于控制半导体开关元件(211)导通和截止的栅极控制接口(212);驱动电路(221),其被设计为向至少一个半导体开关元件(211)的栅极控制接口(212)施加驱动电压(223),该驱动电压小于半导体开关元件(211)的预定栅极阈值电压(501);测量电路(222),其被设计为确定栅极控制接口(212)处的栅极电荷;和控制器(220),其被设计为基于栅极电荷检测栅极阈值电压(501)的漂移,并在检测到栅极阈值电压漂移时指示至少一个半导体开关元件(211)的故障(501)。
Semiconductor fuse with measuring circuit for detecting gate threshold voltage drift
具有检测栅极阈值电压漂移的测量电路的半导体保险装置
2024-05-31
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY / H03K PULSE TECHNIQUE , Impulstechnik |
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