Reverse connection prevention circuit of gas meter and gas meter

By designing anti-reverse circuits in the smart gas meter, using multiple power supplies to work in parallel and independent control circuits and switching circuits, the circuit board damage caused by reverse connection is solved, and the power supply reliability and efficiency are improved.

CN222654832UActive Publication Date: 2025-03-21SHANGHAI FIORENTINI GAS EQUIP
0 Cites 0 Cited by

Patent Information

Application Number
CN202421317672.0
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-11
Publication Date
2025-03-21
Estimated Expiration
2034-06-11

AI Technical Summary

Technical Problem

During use, the smart gas meter may have a reverse connection, causing the circuit board to be damaged, or the large voltage battery will be reversely charged, resulting in damage to the small voltage battery.

Method used

An anti-reverse circuit for gas meter is designed, and it works in parallel through multiple power supplies. Each power supply is equipped with an independent control circuit and a switching circuit. The control circuit controls the conduction and shutdown of the switching circuit to avoid reverse connection of the power supply.

Benefits of technology

It improves the power supply reliability of the entire system, avoids circuit board damage caused by reverse power connection and damage to reverse charging of large voltage batteries, and improves power supply efficiency.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The utility model relates to the technical field of intelligent gas meters, in particular to an anti-reverse-connection circuit of a gas meter and the gas meter. According to the circuit, each power supply in a plurality of power supplies is provided with a corresponding switch circuit and a control circuit, and the control circuit of each power supply is connected with the corresponding switch circuit; each power supply is connected with the load through the corresponding switching circuit and supplies power to the load; the control circuit controls the corresponding switching circuit to be switched on according to a first signal of a corresponding current power supply, the control circuit is further used for controlling the corresponding switching circuit to be switched off according to a second signal of the current power supply, the direction of the first signal is from the current power supply to the load, and the direction of the second signal is opposite to the direction of the first signal; the control circuit controls the corresponding switching circuit to be cut off according to a third signal of the other power supply, and the third signal is generated through the voltage difference between the other power supply and the current power supply. According to the circuit, the situation that the circuit board in the intelligent gas meter is damaged due to reverse connection of the battery is avoided.
Need to check novelty before this filing date? Find Prior Art