The motor driver circuit controlled by TL494 PWM IC is 36V 864W and its maximum over-power is 1800W. Lithium-ion (Li-ion) batteries are used for the power supply. Ten cells are used in series to ensure that the battery voltage is close to the nominal voltage of the motor, thus creating a source with a nominal voltage of 36 V.
Six cells are connected in series-parallel for the required battery capacity. The 10S6P connection will consist of sixty cells and also a reserve is created for the expected decrease in battery capacity.
Battery protection circuit: The low voltage circuit is the section that measures the voltage on the battery and informs the TL494 driver. If necessary, it adjusts the power drawn from the battery (limits the switching cycle) or completely shuts it down.
The protection circuit consists of an operational amplifier MCP6001 in an inverter circuit that is in negative saturation when the battery voltage is safe, so the voltage at the output is 0 V. if the battery voltage is between 33V and 30V, the voltage at the MCP6001 output increases between 0 and 3V.
This output is connected to the converter at pin 4 of the TL494 integrated circuit. The input resistance of the MCP6001 is selected high to limit battery consumption.
1800W Electric Bicycle Motor Driver TL494 36V Circuit Diagram
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Published: 2024/12/17 Tags: motor control circuit, motor driver circuit, tl494 circuit