| 摘要 |
A switch device includes a positive power terminal, a negative power terminal, a plurality of battery slots and a change-over switch. Each battery slot has a positive battery terminal and a negative battery terminal. The positive battery terminal of a battery slot electrically connects to the positive power terminal. The negative battery terminal of another battery slot electrically connects to the negative power terminal. The change-over switch electrically connects with the positive power terminal, the negative power terminal, the negative battery terminal of the battery slot which electrically connecting to the positive power terminal, and the positive battery terminal of the battery slot which electrically connecting to the negative power terminal. The change-over switch is toggled to connect the battery slots as a parallel connection or a series connection optionally. |
