DC power switch device

Abstract

The invention relates to the technical field of photovoltaic power generation and energy storage, and discloses a direct-current power switch device which comprises a base, a plurality of binding posts are arranged on the upper surface of the base in the circumferential direction, wires electrically connected with the positive electrodes or the negative electrodes of battery packs are arranged in the binding posts, and the binding posts are electrically connected with the positive electrodes and the negative electrodes of the battery packs in a one-to-one correspondence mode; the guide column is vertically arranged in the middle of the upper surface of the base, the guide cylinder sleeves the outer side of the guide column, and when the guide cylinder slides to a first position, the lower power connection disc is electrically connected with the lower power connection block, and the multiple battery packs are connected in series; and when the guide cylinder slides to a second position, the upper power connection disc is electrically connected with the upper power connection block, and the multiple battery packs are connected in parallel. The series-parallel connection relation of a plurality of battery packs can be changed through up-down movement of the guide columns, parallel connection shunting can be achieved in the power generation, charging or discharging process, voltage boosting can also be achieved through the mode of series connection of the battery packs, series-parallel connection conversion of any number of batteries is achieved, and then the direct-current power generation, charging or discharging device is suitable for various direct-current power generation, charging or discharging occasions.

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