Control method for preventing spontaneous combustion of electric bicycle

Abstract

The invention discloses a control method for preventing spontaneous combustion of an electric bicycle, and relates to the field of electric bicycles. According to the voltage of a positive power supply connecting terminal of a motor controller and the voltage of a logic circuit power supply terminal, when it is detected that the positive power supply connecting terminal is disconnected with a power battery, and / or the logic circuit power supply terminal is disconnected with the power battery; and when the d-axis current and the q-axis current meeting the preset current waveform condition are detected to determine that the phase line connection terminal is disconnected from the phase line of the motor, the motor controller closes the output to cut off the power. According to the method, the looseness phenomenon of the large-current connecting terminal in the motor controller can be effectively detected through the control algorithm, and the power is cut off through quick output when the looseness phenomenon is detected, so that the insulation failure caused by local overheating generated by the rising of the contact resistance is effectively prevented; therefore, spontaneous combustion of the electric bicycle is effectively prevented, and safety is improved.

Description

technical field [0001] The invention relates to the field of electric bicycles, in particular to a control method for preventing the spontaneous combustion of electric bicycles. Background technique [0002] The spontaneous combustion of electric bicycles is on the rise year by year, which has caused certain harm to the society and the industry, and even serious property losses and personal casualties. [0003] In order to solve this major quality problem, some manufacturers have set up a special group to conduct social survey statistics, analysis and research on spontaneous combustion electric bicycles, from physical field investigation, theoretical analysis, simulation test, enterprise product design, production site and after-sales maintenance. The various reasons for the spontaneous combustion of electric bicycles have been basically identified, and the technical requirements for electrical safety and reliability that the entire vehicle lines and electrical appliances of...

AI Technical Summary

Problems solved by technology

A major reason for the spontaneous combustion of electric bicycles is that the high-current contact connectors are loose, which leads to an increase in contact resistance, local overheating, insulation failure, and short-circuit and combustion, especially in high-end models with medium and high power. big

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