公开(公告)号：WO2021128114A1

公开(公告)日：2021-07-01

申请号：PCT/CN2019/128510

申请日：2019-12-26

Applicant: SUZHOU LITTELFUSE OVS CO., LTD.

Inventor： JIA, Yanqiu ,  JIN, Dan ,  WANG, Yu

IPC: G01R31/08

Abstract: Provided herein are approaches for determining a status of a fuse. In some embodiments, a system may include a first fuse electrically connected to a first node and to a first resistor, and a second fuse electrically connected to a second node and a second resistor, wherein the first and second fuses are in parallel connection to a same port of a multiplexer. The system may further include a controller communicably connected with the multiplexer, the controller operable to read a voltage level of the first and second nodes.

公开(公告)号：WO2021109054A1

公开(公告)日：2021-06-10

申请号：PCT/CN2019/123191

申请日：2019-12-05

Applicant: SUZHOU LITTELFUSE OVS CO., LTD.

Inventor： JIA, Yanqiu ,  JIN, Dan ,  WANG, Yu

IPC: H01H50/14 ,  H02H11/00

Abstract: Disclosed are electrical relay assemblies including a positive temperature coefficient thermistor (PTC) for reverse connection protection. In some embodiments, a relay assembly includes a relay socket receiving a relay, a power source connected to the relay socket, and a positive temperature coefficient thermistor (PTC) connected between the relay socket and the power source.

公开(公告)号：WO2021128114A8

公开(公告)日：2021-07-01

申请号：PCT/CN2019/128510

申请日：2019-12-26

Applicant: SUZHOU LITTELFUSE OVS CO., LTD.

Inventor： JIA, Yanqiu ,  JIN, Dan ,  WANG, Yu

IPC: G01R31/08 ,  G01R31/74 ,  H01H85/30

Abstract: Provided herein are approaches for determining a status of a fuse. In some embodiments, a system may include a first fuse electrically connected to a first node and to a first resistor, and a second fuse electrically connected to a second node and a second resistor, wherein the first and second fuses are in parallel connection to a same port of a multiplexer. The system may further include a controller communicably connected with the multiplexer, the controller operable to read a voltage level of the first and second nodes.

公开(公告)号：WO2020191651A1

公开(公告)日：2020-10-01

申请号：PCT/CN2019/079846

申请日：2019-03-27

Applicant: SUZHOU LITTELFUSE OVS CO., LTD.

Inventor： JIA, Yanqiu ,  JIN, Dan ,  WANG, Yu ,  LIU, Zhibo

IPC: H01H85/30

Abstract: Various embodiments are generally directed to ensuring an electrical fault indicator, such as a light-emitting diode (LED), remains active in the event of an electrical fault in a circuit, even if a load fault, such as an excessive load, a load short circuit, or a load open circuit occurs. Various circuit configurations are provided to achieve this effect, including but not limited to a circuit that includes: a fuse connected between two circuit points, one or more conduction paths sharing a common node with the fuse, a first circuit element sharing the common node with the fuse, and an electrical fault indicator, sharing either i) the common node with the fuse and the first circuit element or ii) another common node with the first circuit element that is distinct from the common node between the fuse and the first circuit element.

公开(公告)号：WO2021007770A1

公开(公告)日：2021-01-21

申请号：PCT/CN2019/096142

申请日：2019-07-16

Applicant: SUZHOU LITTELFUSE OVS CO., LTD.

Inventor： JIA, Yanqiu ,  JIN, Dan ,  CHENG, Du

IPC: H01H50/32

Abstract: Provided herein is an improved solenoid electrical switch. In some embodiments, a solenoid electrical switch may include a plunger at least partially disposed in a central aperture of a solenoid for rotation and axial reciprocation between at least two positions into and out of the central aperture relative to a magnetic coupling member. The plunger may include a first component including a main body and a central slot within the main body, and a second component at least partially disposed within the central slot, wherein the second component may include an engagement surface engaged with an inner surface of the central slot.

公开(公告)号：WO2021003736A1

公开(公告)日：2021-01-14

申请号：PCT/CN2019/095597

申请日：2019-07-11

Applicant: SUZHOU LITTELFUSE OVS CO., LTD.

Inventor： CHENG, Du ,  JIA, Yanqiu ,  JIN, Dan

IPC: H01H85/20 ,  H01H85/02

Abstract: Provided are approaches for integrating solenoids and fuses within a compact housing. In one approach, a fuse apparatus (100)may include a housing(102) including a main body(104), a cover (106)coupled to a first side (110)of the main body(104), and a base(112) coupled to a second side(116) of the main body(104), wherein the cover(106) and the main body(104) define a fuse cavity(120), and wherein the base(112) and the main body (104)define a main cavity.(122) The fuse apparatus (100)may further include a plurality of fuses(124) disposed within the fuse cavity(120),and a plurality of solenoids (130)electrically connected to a printed circuit board (PCB)(132), wherein the plurality of fuses(124) is disposed above the PCB(132), and wherein the PCB (132)is positioned within the main cavity(122).