Bus discharge control method for power supply fast restart

The bus discharge control circuit controlled by the key switch solves the problem of the power supply not being able to restart quickly due to bus discharge in the electric forklift controller, and achieves the effect of no power consumption when the power supply is in standby or hibernation and fast startup when it is woken up.

CN114421753BActive Publication Date: 2026-02-13ZHENGZHOU JIACHEN ELECTRIC CO LTD
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Patent Information

Application Number
CN202210188224.4
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-02-28
Publication Date
2026-02-13
Estimated Expiration
2042-02-28

AI Technical Summary

Technical Problem

In electric forklift controllers, the integration of bus discharge function prevents the power supply from restarting quickly. In existing technologies, the bus cannot effectively discharge after the power supply stops working, resulting in the power supply not being able to start up quickly.

Method used

The bus discharge control circuit, which uses a key switch, enables the controllable switching between the bus and the power input terminal through a semiconductor switching circuit and an input enable circuit. Combined with the control signal of the MCU, it ensures that the power supply consumes no power during standby and sleep and starts up quickly when woken up.

Benefits of technology

It achieves a fast power restart function, avoiding power consumption during standby and hibernation. The system can quickly resume normal operation when it wakes up. It has a simple structure and is easy to operate.

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Abstract

The application discloses a bus discharge control method for power quick restart, which comprises a bus discharge control circuit and operation steps. The bus discharge control circuit comprises a key switch S connected with a power supply, a bus circuit connected with one end of the key switch S, an input enable circuit connected with one end of the switch S, and a semiconductor switch circuit connected with the key switch S and the bus circuit and used for starting a sleep state of a control system. A signal of the input enable circuit is provided by a system MCU. The application has the advantages of simple structure, key switch control power restart, system sleep, no power consumption, input key switch for wake-up, simple application, power supply with an enable function, controllable input on-off of the bus and the power supply, and solution to the problem of quick start caused by integrated bus discharge.
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