Title:
DISCHARGE CONTROL METHOD AND CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2024/036981
Kind Code:
A1
Abstract:
Disclosed in the present invention are a discharge control method and a circuit. The method comprises: acquiring a first voltage value of an output electrolytic capacitor in a bidirectional DC-DC power supply circuit module; if the first voltage value is greater than a discharge cut-off voltage value, controlling a bidirectional DC-DC module of the bidirectional DC-DC power supply circuit module to be in a reverse working state (discharge state); after the reverse working time is equal to a preset discharge time, controlling the bidirectional DC-DC module to be in a shutdown state; acquiring a second voltage value of the output electrolytic capacitor; and controlling the discharge state of the bidirectional DC-DC power supply circuit module according to the second voltage value and the first voltage value. On the basis of the characteristic that the bidirectional DC-DC module in the bidirectional DC-DC power supply circuit module can reversely transmit energy, the present application makes full use of a main power circuit device (the output electrolytic capacitor, a DC-DC switch tube, and the like), without the need of an additional discharge circuit; thus, the circuit structure is greatly simplified (fewer electronic components are used), the cost is reduced, module space resource shortage can be relieved, and a good discharge effect is achieved.
Inventors:
ZHANG ZHICHENG (CN)
TANG YUNDONG (CN)
LEI BIAO (CN)
TANG YUNDONG (CN)
LEI BIAO (CN)
Application Number:
PCT/CN2023/085952
Publication Date:
February 22, 2024
Filing Date:
April 03, 2023
Export Citation:
Assignee:
SHENZHEN INFYPOWER CO LTD (CN)
International Classes:
H02M3/00; H02M1/32
Foreign References:
| CN115411919A | 2022-11-29 | |||
| CN113794364A | 2021-12-14 | |||
| CN113572347A | 2021-10-29 | |||
| CN112510980A | 2021-03-16 | |||
| CN110880799A | 2020-03-13 | |||
| US20200274399A1 | 2020-08-27 |
Attorney, Agent or Firm:
HENSEN INTELLECTUAL PROPERTY FIRM (CN)
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