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On-off control circuit

An on-off control and circuit technology, applied in circuit devices, emergency protection circuit devices, emergency protection circuit devices for limiting overcurrent/overvoltage, etc. Stability and other issues, to achieve the effect of long service life, preventing surge current breakdown, and reducing production costs

Active Publication Date: 2016-01-20
SHENZHEN COOLTEK ELECTRIC VEHICLE COOLING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that the traditional technical solution has disadvantages such as high cost, low life of the core on-off device, and unstable circuit.

Method used

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Embodiment Construction

[0013] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0014] see figure 1 and figure 2 As shown, the on-off control circuit provided in this embodiment includes a positive input terminal V1, a negative input terminal V2, a positive output terminal V3, a negative output terminal V4, an insurance unit 10, a surge protection unit 20, a pre-charging unit 30, a filter Unit 40 and detection unit ( figure 2 not shown).

[0015] Such as figure 2 As shown, the insurance unit 10 and the surge protection unit 20 are connected in series between the positive input terminal V1 and the positive output terminal V3; the input terminal of the insurance unit 10 is connected to the positive input terminal V1, and the output terminal is connected to the surge protection unit The input terminals of the surge protection unit 20 are connected to each other, and the output terminal of the surge protection unit 20 is connected to the posi...

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PUM

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Abstract

The invention discloses an on-off control circuit provided with a positive input end, a negative input end, a positive output end and a negative output end, wherein the negative input end is connected with the negative output end. The on-off control circuit comprises a fuse unit, a surge protection unit, a pre-charging unit and a filtering unit, wherein the input end of the fuse unit is connected with the positive input end, the output end of the fuse unit is connected with the input end of the surge protection unit, the output end of the surge protection unit is connected with the positive output end, the pre-charging unit is connected in series with the two ends of the surge protection unit, and the filtering unit is arranged between the positive output end and the negative output end. Through integration of the circuit, the circuit is more stable to carry out surge prevention operation and filtering operation on an input electric signal, and meanwhile, the production cost is reduced.

Description

technical field [0001] The invention relates to the technical field of electronic circuits, in particular to an on-off control circuit. Background technique [0002] In the control of high-voltage DC circuits, it is often necessary to perform on-off control of high-voltage DC circuits by using on-off control circuits. [0003] The traditional technical solution is to use an independent pre-charging circuit, but there is no surge suppression mechanism in the main circuit, so a special high-voltage DC contactor or relay should be added to switch the circuit to avoid long-term damage caused by the DC contact. The arcing phenomenon of time. It can be seen that the traditional technical solution has disadvantages such as high cost, low life of the core on-off device, and unstable circuit. Contents of the invention [0004] The invention provides an on-off control circuit, which reduces the production cost of the circuit and improves the reliability of the circuit. The purpos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/00H02M1/14H02M1/32H02H9/02
Inventor 齐勇周润鹏刘威冯德树
Owner SHENZHEN COOLTEK ELECTRIC VEHICLE COOLING TECH CO LTD
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