Mon Prof Augmenté
Electric Bicycle Power Chain
Age 16 · Technology
Energy moves from a battery through a controller, motor, gear reducer and rear wheel. At every stage, some energy becomes heat or sound instead of motion.
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Age 16: open this week
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In the picture
- Battery pack: stores chemical energy and sends electrical energy onward.
- Controller box: regulates the electrical energy that reaches the motor.
- Motor: converts electrical energy into turning motion.
- Gear reducer: changes the speed and torque of the turning motion.
- Rear wheel: receives the turning motion and moves the bicycle.
Examples
- A phone charger moving energy from a wall socket to a battery and then to the screen.
- A wind turbine sending electricity through cables to a home heater.
Key takeaways
- Every conversion or transmission stage loses some energy, usually as heat.
- The load is the part that uses the energy to do useful work.
Quiz: Electric Bicycle Power Chain (Age 16)
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According to the card, what is the load in a power chain?
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What happens at every conversion or transmission stage in the power chain?
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Which sequence shows the energy flow in the electric bicycle power chain?
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