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Drive pre-charging and electrifying circuit

A driver and pre-charging technology, applied in emergency protection circuit devices, electrical components, output power conversion devices, etc., can solve the problem of inability to effectively control pre-charging, and achieve the effect of improving safety performance and reliability

Pending Publication Date: 2021-04-09
RUKING EMERSON CLIMATE TECH SHANGHAI CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a driver pre-charging and power-on circuit, which is used to solve the problem that the existing pre-charging circuit for the driver cannot realize effective control of the pre-charging

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  • Drive pre-charging and electrifying circuit
  • Drive pre-charging and electrifying circuit
  • Drive pre-charging and electrifying circuit

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Embodiment Construction

[0037] The implementation of the present invention is described below through specific specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, in the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

[0038] It should be noted that the diagrams provided in the following embodiments are only schematically illustrating the basic ideas of the present invention, and only the components related to the present invention are shown in the diagrams rather than the number, shape and num...

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Abstract

The invention provides a drive pre-charging and electrifying circuit. The pre-charging and electrifying circuit comprises a first resistor, a first relay and a second relay; a first contact end of the first relay is connected with one end of the first resistor, a second contact end of the first relay is connected with a second contact end of the second relay, one end of a coil of the first relay is connected with a first driving unit, and the other end of the coil of the first relay is connected with one end of a coil of the second relay; the first contact end of the second relay is connected with the other end of the first resistor, and the other end of the coil of the second relay is connected with a second driving unit; and the first driving unit and the second driving unit are connected with the control unit. According to the invention, effective control of pre-charging can be realized, the first resistor is prevented from being burnt down when the second relay connected in parallel with the first resistor fails, the purposes of driver operation state detection and closed-loop control are achieved, and the safety performance and reliability of the driver are greatly improved.

Description

technical field [0001] The invention belongs to the technical field of drivers, in particular to a driver precharging and power-on circuit. Background technique [0002] Now there are strict requirements on the hazard protection of drivers in the market. In order to ensure the safety of driver products, driver products require that the driver can be normal when each component is disconnected or the chip pin is short-circuited to adjacent pins, power supply or ground. hazard protection. [0003] There are energy storage elements in the main circuit of the driver, and inrush current will be generated in the circuit, which will affect the electrical components, so the driver generally has a pre-charging circuit to limit the power-on current to avoid damage to the components; the traditional pre-charging circuit generally uses The topology of a power relay connected in parallel with a pre-charging resistor has defects in the safety protection of this pre-charging circuit. When ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H7/125H02M1/00
CPCH02H7/125H02H7/1255H02M1/00
Inventor 王孜风程焕张广辉
Owner RUKING EMERSON CLIMATE TECH SHANGHAI CO LTD
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