CN-122025477-A - Three-loop high-voltage contactor with normally open or normally closed auxiliary contact

CN122025477ACN 122025477 ACN122025477 ACN 122025477ACN-122025477-A

Abstract

The invention discloses a three-loop high-voltage contactor with normally open or normally closed auxiliary contacts, which relates to the technical field of high-voltage contactors, and discloses a brand-new high-voltage contactor internal structure frame which is characterized in that an auxiliary movable reed in an auxiliary loop is arranged in the middle of a fixed support, an auxiliary terminal outgoing line and a lead are led out from the middle of a product together, so that the requirements of a user line and signal derivation are met, the installation and the use are convenient, the technical problem that the lead mode in the existing high-voltage contactor is limited is solved, the fixed contact comprises a first main contact, a second main contact, a third main contact and a fourth main contact, the first main contact and the second main contact are correspondingly arranged with the first movable contact, a first main loop is formed, the third main contact and the fourth main contact are correspondingly arranged with the first movable contact, and a second main loop is formed, and the product is simultaneously provided with two main loops for realizing switching of main current load loops.

Inventors

WAN QIAN
ZHUANG KAIWEI
KONG DEWU
ZHUANG XIAOHANG
PENG SHUAI
Zheng Qingyao

Assignees

浙江环方汽车电器有限公司

Dates

Publication Date: 20260512
Application Date: 20260413

Claims (10)

1. The three-loop high-voltage contactor with the normally open or normally closed auxiliary contacts is characterized by comprising a fixed contact (2), a first movable contact piece (41) and a second movable contact piece (42), wherein the fixed contact (2) comprises a first main contact (21), a second main contact (22), a third main contact (23) and a fourth main contact (24), the first main contact (21) and the second main contact (22) are correspondingly arranged with the first movable contact piece (41) to form a first main loop, and the third main contact (23) and the fourth main contact (24) are correspondingly arranged with the first movable contact piece (41) to form a second main loop.
2. The three-circuit high-voltage contactor with the normally open or normally closed auxiliary contacts, according to claim 1, is characterized in that a ceramic cover assembly (1) is arranged on the outer side of the fixed contact (2), a square block piece (5) is fixedly arranged below the ceramic cover assembly (1), a yoke iron plate assembly (3) is fixedly arranged below the square block piece (5), and the yoke iron plate assembly (3) comprises a yoke iron plate (37).
3. The three-circuit high-voltage contactor with the normally open or normally closed auxiliary contacts according to claim 1, wherein a sealing assembly (4) is installed in the ceramic cover assembly (1), the sealing assembly (4) comprises a first movable contact piece (41) and a second movable contact piece (42), a contact spring (45) is fixedly installed below the first movable contact piece (41) and the second movable contact piece (42), a fixed support (44) is fixedly installed below the contact spring (45), a fixed plate (43) is fixedly installed above the fixed support (44), and the first movable contact piece (41) and the second movable contact piece (42) are fixed above the fixed support (44) through the fixed plate (43).
4. A three-circuit high voltage contactor with a normally open or normally closed auxiliary contact according to claim 3, wherein an auxiliary movable spring (47) is fixedly installed at the middle part of the length direction of the fixed bracket (44), and a mounting piece (471) is fixedly installed at the top of the center of the auxiliary movable spring (47).
5. The three-loop high-voltage connector with the normally open or normally closed auxiliary contacts, which is disclosed in claim 2, is characterized in that a U-shaped yoke (6) is installed on the yoke plate (37), a guide sleeve (64) is installed at the bottom of the U-shaped yoke (6), a yoke ring (63) is installed at one end, close to the yoke plate (37), of the guide sleeve (64), an indication iron core (62) is installed in the axial direction of the guide sleeve (64), a color sleeve (61) is installed at one end, far away from the yoke plate (37), of the indication iron core (62), and an indication spring (65) is installed between the indication iron core (62) and the guide sleeve (64).
6. The three-circuit high-voltage contactor with the normally open or normally closed auxiliary contacts according to claim 2, wherein a static iron core (68) is fixedly arranged below the yoke plate (37), a movable iron core (67) is arranged below the static iron core (68), a return spring (66) is arranged between the static iron core (68) and the movable iron core (67), a push rod (69) is arranged between the static iron core (68) and the movable iron core (67) in the axial direction, a magnetic ring (671) is arranged below the movable iron core (67), and the position of the indication iron core (62) is controlled through the magnetic ring (671), so that the state of the movable iron core (67) is displayed, and an indication effect is achieved.
7. The three-circuit high-voltage contactor with the normally open or normally closed auxiliary contacts according to claim 2, wherein auxiliary terminals (35) which are distributed in a central symmetry mode are installed on the yoke plate (37), the auxiliary terminals (35) are installed on the yoke plate (37) in a penetrating mode, the auxiliary terminals (35) are arranged corresponding to two ends of the auxiliary movable reed (47), the auxiliary terminals (35) are arranged in an L shape, one ends of the auxiliary terminals are arranged above the auxiliary movable reed (47), and the other ends of the auxiliary terminals extend to the outside of the ceramic cover assembly (1).
8. The three-loop high-voltage connector with the normally open or normally closed auxiliary contacts, as claimed in claim 6, is characterized in that a magnetic conduction cylinder (77) is arranged outside the movable iron core (67) and the static iron core (68), a coil frame (74) is fixedly arranged outside the magnetic conduction cylinder (77), a circuit board (72) is arranged at one end, close to the U-shaped yoke (6), of the coil frame (74), a wire (71) is connected to one end, far away from the magnetic conduction cylinder (77), of the circuit board (72), and the circuit board (72) is connected with an external power supply through the wire (71).
9. The three-circuit high-voltage contactor with a normally open or normally closed auxiliary contact according to claim 7, wherein an auxiliary terminal outgoing line (73) is connected to one end of the auxiliary terminal (35) away from the auxiliary movable spring piece (47), and the auxiliary terminal (35) transmits a signal to the outside through the auxiliary terminal outgoing line (73).
10. A three-circuit high voltage contactor with a normally open or normally closed auxiliary contact according to claim 7, wherein the auxiliary terminal (35) is provided with a bending part (351) near one end of the auxiliary movable spring (47), and the bending part (351) is opened upwards to realize stable contact of the auxiliary terminal (35) and the auxiliary movable spring (47).

Description

Three-loop high-voltage contactor with normally open or normally closed auxiliary contact Technical Field The invention relates to the technical field of high-voltage contactors, in particular to a three-loop high-voltage contactor with normally open or normally closed auxiliary contacts. Background The high-voltage direct-current contactor is used as a core control element in the power system, has the main functions of realizing on-off control and loop switching of a high-voltage circuit, and is an indispensable key component in the new energy industry and the high-voltage circuit control field. With the rapid development of new energy industry, the performance and functional requirements of the high-voltage direct-current contactor in the fields of photovoltaic, energy storage, new energy automobiles and the like are continuously improved, and the traditional single-current main circuit high-voltage direct-current contactor is difficult to meet the application requirements of industry diversification. At present, the existing high-voltage direct-current contactor generally adopts a single main loop structure, only can realize on-off control of a single main current load, can not meet the use requirement of partial customers on switching of double main loops, meanwhile, in order to monitor the on-off state of the main loops, partial application scenes need to be provided with independent auxiliary loops, but the auxiliary loop structure design of the existing product has obvious defects that firstly, the auxiliary loops are limited in extraction mode, the auxiliary loops of the conventional product are connected with an external circuit through an upper area outgoing line, the wiring flexibility is poor, a compact equipment installation space can not be adapted, secondly, the auxiliary loops are single in closing mode, switching of normally open and normally closed modes can not be carried out according to the working condition requirement of the customers, the auxiliary loops are synchronously conducted when partial customers need to conduct the double main loops, the auxiliary loops are synchronously disconnected when the double main loops need to conduct, the traditional product is difficult to simultaneously meet the different requirements, thirdly, the assembly structure stability of the auxiliary loops is insufficient, the contact pressure and the interception capability are limited, and the stability of monitoring signals is affected. In order to solve the above-mentioned problems, there is an urgent need for a three-circuit high voltage contactor having a normally open or normally closed auxiliary contact to solve the above-mentioned problems. Disclosure of Invention Aiming at the defects of the prior art, the invention provides a three-loop high-voltage contactor with a normally open auxiliary contact or a normally closed auxiliary contact, which solves the technical defects of single function of a single main loop, non-switchable auxiliary loop closing mode, limited lead mode and the like in the existing high-voltage contactor. The invention provides a three-loop high-voltage contactor with a normally open auxiliary contact or a normally closed auxiliary contact, which comprises a fixed contact, a first movable contact and a second movable contact, wherein the fixed contact comprises a first main contact, a second main contact, a third main contact and a fourth main contact, the first main contact and the second main contact are correspondingly arranged with the first movable contact to form a first main loop, and the third main contact and the fourth main contact are correspondingly arranged with the first movable contact to form a second main loop. The outer side of the fixed contact is provided with a ceramic cover assembly, the ceramic cover assembly comprises a ceramic cover, and the fixed contact is fixedly arranged at the top of the ceramic cover. The ceramic cover comprises a ceramic cover assembly, and is characterized in that a square block is fixedly arranged below the ceramic cover assembly, a yoke plate assembly is fixedly arranged below the square block, the yoke plate assembly comprises a yoke plate, a first fixing piece, a second fixing piece, a third fixing piece and a fourth fixing piece are fixedly arranged at two ends of the length direction of the yoke plate, and the yoke plate is fixed through the first fixing piece, the second fixing piece, the third fixing piece and the fourth fixing piece. The ceramic cover assembly is internally provided with a sealing assembly, the sealing assembly comprises a first movable contact piece and a second movable contact piece, a contact spring is fixedly arranged below the first movable contact piece and the second movable contact piece, a fixed support is fixedly arranged below the contact spring, a fixed plate is fixedly arranged above the fixed support, and the first movable contact piece and the second movable contact piece are fixed ab