Active heat dissipation structure of high-power electric tool battery pack

Abstract

The utility model relates to an active heat dissipation structure of a high-power electric tool battery pack. The battery pack comprises a battery pack shell, a battery cell, a PCB (Printed Circuit Board) and a heat dissipation block, the PCB is provided with an MOS (Metal Oxide Semiconductor) tube, the battery pack shell consists of a battery pack base, a battery cell bracket and a battery pack upper cover, the whole battery cell bracket is fixed in the battery pack base, the PCB is fixed on the upper surface of the battery cell bracket, the MOS tube is arranged upwards, and the heat dissipation block is arranged on the upper surface of the battery cell bracket. The heat dissipation block is fixed on the bottom surface of the battery pack upper cover, a heat conducting sheet and a heat dissipation sheet are arranged on the heat dissipation block, the battery pack upper cover and the battery pack base are fixedly arranged in a covering manner, the heat conducting sheet is opposite to the MOS tube, and a heat conducting silica gel pad is clamped and attached between the heat conducting sheet and the MOS tube. The PCB is fixedly connected with the battery cell support, the heat dissipation block is fixedly connected with the battery pack upper cover, and after the battery pack upper cover is separated from the battery pack base, the heat conduction sheet is automatically separated from the MOS tube, so that the battery pack is convenient for subsequent replacement of parts or maintenance.

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