Temperature self-balancing overheating protection brushless direct current motor driver for bread maker

Abstract

A temperature self-balancing overheating protection brushless direct current motor driver for a bread maker comprises a control chip, a rotation speed measuring output circuit, a rotation speed control input circuit, a Hall rotor position sensor detection circuit, a temperature measuring circuit, an intelligent power module (IPM) power module circuit and an over-current detection circuit, and is characterized in that the control chip is a 120-degree hardware drive control chip and adopts an upper arm pulse-width modulation (PWM) control mode, the oscillation frequency is set as 20KHz, the rotation speed control voltage is set between 1.7V and 6.0V, the temperature measuring circuit is connected with the rotation speed control input circuit in parallel and comprises a positive temperature coefficient thermistor R23 and a triode transistor Q2, and the over-current detection circuit is connected with the IPM power module circuit in parallel. The temperature self-balancing overheating protection brushless direct current motor driver for the bread maker has the functions of over-current self-balancing overheating protection, undervoltage self-balancing overheating protection and temperature self-balancing overheating protection.

Description

technical field [0001] The invention relates to a temperature self-balancing circuit for a bread machine, in particular to a temperature self-balancing overheat protection DC brushless motor driver for a bread machine. Background technique [0002] The DC brushless motor for bread machine is composed of two parts: the driver and the motor body, among which the DC brushless motor driver is its core component. The efficiency of traditional AC motors for bread machines is low, generally between 30% and 40%, and the electromagnetic noise is large. With the deterioration of the global climate, building a resource-saving and environment-friendly society is generally recognized by various countries. Energy-saving products have become new products that are encouraged to be developed and used in various countries, and brushless DC motors are energy-saving and environmentally friendly products with high efficiency and low noise, and are ideal substitutes for the original low-efficienc...

AI Technical Summary

Problems solved by technology

The efficiency of traditional AC motors for bread machines is low, generally between 30% and 40%, and the electromagnetic noise is large. With the deterioration of the global climate, building a resource-saving and environment-friendly society is generally recognized by various countries. Energy-saving products have become new products that are encouraged to be developed and used in various countries, and brushless DC motors are energy-saving and environmentally friendly products with high efficiency and low noise, and are ideal substitutes for the original low-efficiency AC motors.

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