Title:
DRIVE CONTROL CIRCUIT BOARD AND AIR CONDITIONER
Document Type and Number:
WIPO Patent Application WO/2020/151147
Kind Code:
A1
Abstract:
The present application provides a drive control circuit board and an air conditioner. The drive control circuit board is connected between a bus and a load, and comprises: a current detection circuit, which is connected in series to a high-voltage bus or a low-voltage bus and used for detecting a current signal of the bus; a control circuit, connected to the current detection circuit, and used for comparing the magnitude relationship between the current signal and a first preset threshold, and generating a corresponding control signal according to the magnitude relationship to generate a corresponding rectification control signal; and a rectifier bridge, which is connected to the control circuit and forms a corresponding conduction loop according to the rectification control signal, four slab bridge elements comprised in the rectifier bridge being all configured as controllable switch tubes, and the controllable switch tubes being provided with corresponding body diodes. The present application solves the problem that energy of an electrolytic capacitor goes back to the alternating current side upon turning on a corresponding controllable switch tube when the bus voltage is greater than the alternating current voltage, thereby improving the stability and safety of the circuit, reducing the noise of the circuit, and reducing the interference of voltage fluctuation on surrounding electronic components.
Inventors:
WEN XIANSHI (CN)
Application Number:
PCT/CN2019/088582
Publication Date:
July 30, 2020
Filing Date:
May 27, 2019
Export Citation:
Assignee:
GD MIDEA AIR CONDITIONING EQUIPMENT CO LTD (CN)
International Classes:
H02M7/219; F24F11/88; H02H7/125; H02M1/088; H02M1/44
Foreign References:
| CN109768719A | 2019-05-17 | |||
| CN107546991A | 2018-01-05 | |||
| CN1588780A | 2005-03-02 | |||
| CN108809074A | 2018-11-13 | |||
| JPH0880051A | 1996-03-22 |
Attorney, Agent or Firm:
YOULINK INTELLECTUAL PROPERTY LAW FIRM (CN)
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