| 摘要 |
<p>PROBLEM TO BE SOLVED: To convert electric energy from various batteries having different voltages into thermal energy.SOLUTION: An electric heating device 100 includes a power module 1, an electric heating unit 3, and a changeover unit 2. In order to output electric energy, the power module 1 is constituted to be connected electrically with a battery. In order to receive electric energy and to convert the electric energy into thermal energy, the electric heating unit 3 includes a plurality of electric heating components 31-3n connected electrically with the power module 1. The changeover unit 2 is connected electrically between the power module 1 and the electric heating unit 3, and can be operated to control electrical connection between the power module 1 and each of the electric heating components 31-3n. Consequently, the electric heating unit 3 generates thermal energy of a constant output power.</p> |
