Title:
RELAY DRIVE CIRCUIT AND AIR CONDITIONER
Document Type and Number:
WIPO Patent Application WO/2020/151178
Kind Code:
A1
Abstract:
Provided are a relay drive circuit and an air conditioner, wherein the relay drive circuit comprises: a drive control module for outputting a pulse drive signal; a switch module, wherein a controlled end of the switch module is connected to the drive control module so as to receive the pulse drive signal, and an output end of the switch module is connected to the relay by means of a series of filter inductors; after the relay completes a switch-on action according to the received conduction signal, the switch module is controlled to be switched off or switched on by the pulse drive signal so as to realize pulse drive control of the relay wherein the filter inductor is used for filtering the electromagnetic interference of pulse drive control, wherein the duty ratio of the pulse drive signal is determined according to the release voltage of the relay. The technical solution of the present application facilitates extending the switch-off time of the switch module, that is, reduces the duty ratio of the pulse drive signal, which can help the relay to further reduce the drive power consumption and extend the service life of a device in the drive circuit.
Inventors:
HUO ZHAOJING (CN)
HUANG ZHAOBIN (CN)
HUANG ZHAOBIN (CN)
Application Number:
PCT/CN2019/092824
Publication Date:
July 30, 2020
Filing Date:
June 25, 2019
Export Citation:
Assignee:
GD MIDEA AIR CONDITIONING EQUIPMENT CO LTD (CN)
International Classes:
H01H47/02; H01H47/22; H01H47/32
Foreign References:
| CN109559934A | 2019-04-02 | |||
| CN109686616A | 2019-04-26 | |||
| CN207883612U | 2018-09-18 | |||
| CN207883612U | 2018-09-18 | |||
| CN108630493A | 2018-10-09 | |||
| CN107845541A | 2018-03-27 | |||
| CN102709117A | 2012-10-03 | |||
| JPH11273525A | 1999-10-08 |
Attorney, Agent or Firm:
YOULINK INTELLECTUAL PROPERTY LAW FIRM (CN)
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