公开(公告)号：US20210075312A1

公开(公告)日：2021-03-11

申请号：US16981574

申请日：2019-05-17

Applicant: SANDEN AUTOMOTIVE COMPONENTS CORPORATION

Inventor： Hiroshi YOSHIDA ,  Saori KURIBARA ,  Takashi KANAI

IPC: H02M1/32 ,  H02M7/537 ,  H02M1/08

Abstract: There is provided a power source input circuit capable of suppressing an oscillation phenomenon of an input current without any trouble. The power source input circuit includes a current detection resistor 21 which detects a current on the basis of a voltage generated thereacross, and a transistor Q3 whose collector is connected to a gate of a power switching element Q2. The transistor Q3 changes the voltage of a base thereof according to the voltage generated across the current detection resistor 21 and adjusts the voltage of the gate of the power switching element Q2 to allow a constant current operation to be performed. Further, a capacitor 28 is connected between the base and collector of the transistor Q3.

公开(公告)号：US20210263113A1

公开(公告)日：2021-08-26

申请号：US17275894

申请日：2020-02-14

Applicant: SANDEN AUTOMOTIVE COMPONENTS CORPORATION

Inventor： Hiroshi YOSHIDA ,  Yunhai JIN

IPC: G01R31/66 ,  H01H9/22 ,  B60L1/00 ,  B60L3/12

Abstract: Provided is an interlock device for a high voltage apparatus which enables not only the diagnosis of the connected or non-connected state of a connector during normal operation of the interlock device, but also the detection of a failure of the interlock device itself, including a failure of the interlock loop. The device includes an interlock loop 16 annexed to an HV connector 7 for connecting an electric compressor to an HV battery 8, a detecting signal output unit, a first switching element, a controlling voltage switching circuit operable, in a closed state of the interlock loop, to switch a voltage applied to a control electrode of the first switching element according to an output of the detecting signal output unit, a second switching element operable, in an open state of the interlock loop, to apply to the control electrode of the first switching element an output of the controlling voltage switching circuit so as to cause an ON/OFF state of the first switching element to be inverted from when the interlock loop is in the closed state, and a failure diagnosis unit.