Novel temperature protection electric vehicle controller

Abstract

The invention discloses a novel temperature protection electric vehicle controller comprising a master controller of which the internal part is provided with a temperature acquisition circuit. The temperature acquisition circuit comprises a single-chip microcomputer battery temperature detection end, a filtering capacitor, a pull-up resistor and a thermistor. The novel temperature protection electric vehicle controller is characterized in that one end of the filtering capacitor, one end of the pull-up resistor and one end of the thermistor are connected. The common connection point of one end of the filtering capacitor, one end of the pull-up resistor and one end of the thermistor is connected with the single-chip microcomputer battery temperature detection end. Advantages of the novel temperature protection electric vehicle controller are that temperature of the internal part of the controller can be monitored. When temperature reaches a protection value, the current-limiting value of the controller is reduced and speed of the controller is also reduced so that the generated heat is reduced, and damage to the controller caused by excess use is avoided. When temperature of the controller continuously rises, the controller is maintained at the minimum current-limiting value so that the controller is ensured to be continuously used. When temperature of the controller decreases, the controller recovers to the original state.

Description

technical field [0001] The invention relates to an electric vehicle controller, in particular to a novel temperature protection electric vehicle controller. Background technique [0002] As a practical means of transportation, electric vehicles have developed rapidly in recent years, and the electric vehicle business will have a long way to go. The controller, as one of the main components of the electric vehicle, is mainly used to control the start, operation, advance and retreat, speed, stop and other electronic devices of the electric vehicle. It is like the heart and brain of the electric vehicle. Basic operations on electric vehicles. With the development of electric locomotive applications, the requirements for control functions are getting higher and higher and more diversified. Electric vehicle controllers generally must have three major functions, one is speed regulation, the other is overcurrent control, and the third is undervoltage protection, which specificall...

AI Technical Summary

Problems solved by technology

When the controller is running, if the load is heavy and it continues to work near the current limit value, although the outer shell of the controller has a certain heat dissipation effect, the heat generated at this time is far greater than the heat dissipation, and the temperature will continue to rise. When the controller When the temperature of the device is too high, the components inside are prone to failure due to high temperature, so the failure rate of products currently on the market remains high

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