A power supply circuit with temperature protection and overcurrent protection

CN224343100UActive Publication Date: 2026-06-09XIAMEN INTRETECH AUTOMOTIVE ELECTRONICS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
XIAMEN INTRETECH AUTOMOTIVE ELECTRONICS CO LTD
Filing Date
2025-06-05
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Motors are unstable and prone to damage when subjected to temperature changes and abnormal current. Furthermore, the wide input voltage range of the vehicle power supply leads to unstable motor operation.

Method used

Design a power supply circuit with temperature protection and overcurrent protection, including a power input module, a controller module, a temperature protection module, a step-up/step-down circuit module, an overcurrent protection module, and a voltage regulator output module. By integrating temperature and current detection, the feedback signal controls the power output to achieve stable operation of the motor.

Benefits of technology

Ensures stable motor operation under different temperature and current conditions, prevents damage due to overheating or overcurrent, adapts to a wide range of on-board power input, and improves motor working stability and reliability.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

A power supply circuit with temperature protection and overcurrent protection includes a power input module for providing power supply for a controller module; the controller module is used for receiving feedback signals from a temperature protection module and an overcurrent protection module, and controlling the on-off of a boost-buck circuit module; when the temperature is abnormal, the controller is closed, and / or when the current exceeds a set threshold, the controller is closed, so as to close the DC power output; the temperature protection module is used for detecting temperature change and feeding back to the controller module; the boost-buck circuit module is used for providing stable voltage for a load; the overcurrent protection module is used for detecting current change and feeding back to the controller module; a voltage stabilizing output module is used for outputting DC stabilized voltage; the power input module is connected with a DC input power supply and the controller module respectively; the controller module is connected with the boost-buck circuit module, the temperature protection module, the overcurrent protection module and the voltage stabilizing output module respectively; the boost-buck circuit module is connected with the voltage stabilizing output module.
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