CN-224217644-U - Battery pack and electric tool thereof

Abstract

The utility model relates to a battery pack, which comprises a battery pack shell, a locking piece, a plurality of electric cores, an electric core support and a circuit board, wherein the electric core support, the electric cores and the circuit board are contained in the battery pack shell, each electric core is installed in the electric core support, the circuit board is arranged above the electric core, the locking piece is used for locking and installing the battery pack into an electric tool, an elastic piece is further arranged below the locking piece and used for resetting the locking piece, the electric core support is provided with a positioning bulge, the circuit board is provided with a through hole, the positioning bulge penetrates through the through hole, so that the circuit board is positioned and installed to the electric core support, the positioning bulge is inwards concave to form a groove, one end of the elastic piece is installed in the groove, and the other end of the elastic piece is abutted to the locking piece. The battery cell support is provided with the positioning bulge, so that the effect of rapidly positioning the circuit board can be achieved when the battery pack is manufactured, the movable position of the elastic piece can be limited, the locking piece is prevented from being shifted to cause pressing failure, the positioning bulge also plays a guiding role, and the locking piece can be pressed smoothly.

Inventors

• Request for anonymity

Assignees

• 可为科技(南通)有限公司

Dates

Publication Date

20260508

Application Date

20250514

Claims (10)

1. 1. The utility model provides a battery package, includes battery package shell, locking piece, several electric core, electric core support and circuit board, accept in the battery package shell electric core support, several electric core with the circuit board, each electric core install in electric core support, the circuit board set up in the top of electric core, the locking piece is used for with in the battery package locking is installed to electric tool, the below of locking piece still sets up the elastic component, the elastic component is used for the reset of locking piece, a serial communication port, electric core support sets up the location arch, the circuit board sets up the through-hole, the location arch passes the through-hole for the circuit board location is installed to electric core support, the location arch indent forms the recess, the one end of elastic component install in the recess, the other end butt extremely the locking piece.
2. 2. The battery pack according to claim 1, wherein positioning posts are further provided on both sides of the cell holder, respectively, and pass through the circuit board, so that the circuit board is further positioned and mounted to the cell holder.
3. 3. The battery pack of claim 2, wherein the positioning bosses and the top ends of the positioning posts each have a guide surface for guiding the mounting of the circuit board to the cell support.
4. 4. The battery pack according to claim 2, wherein the cell holder is provided with at least two opposite positioning posts, and the positioning protrusions are respectively equidistant from the two positioning posts.
5. 5. The battery pack of claim 1, wherein the cell support has a top surface, a side wall is formed by extending from the top surface in a direction away from the cell, two side walls are spliced with the top surface to form the positioning protrusion, one end of the elastic member is abutted to the top surface, and the side wall limits the elastic member in the positioning protrusion.
6. 6. The battery pack of claim 5, wherein the resilient member is a spring and the sidewall is a cylindrical sidewall.
7. 7. The battery pack according to claim 6, wherein a mounting post is provided on the back surface of the locking member, one end of the spring is fitted over the mounting post, and the other end is fitted into the groove of the positioning protrusion.
8. 8. The battery pack according to claim 6, wherein the cell holders include a left holder and a right holder, the left holder and the right holder are respectively provided at both ends of each cell, the left holder and the right holder form semicircular side walls from the top surfaces, respectively, and the two semicircular side walls form the cylindrical side walls after the left holder and the right holder are spliced.
9. 9. The battery pack of claim 1, wherein the circuit board is secured to the cell support by fasteners.
10. 10. A power tool comprising the battery pack according to any one of claims 1 to 9.

Description

Battery pack and electric tool thereof Technical Field The application relates to the technical field of battery packs, in particular to a battery pack and an electric tool thereof. Background The battery pack typically serves as a power source for powering the power tool. The battery pack comprises a shell, a plurality of electric cores are arranged in the shell, the electric cores are arranged on an electric core support, a circuit board is arranged on the electric core support, and the electric cores are connected with the circuit board through electric connecting sheets. The shell is also provided with a button which can detachably install the battery pack into the electric tool. Typically, an elastic member is provided inside the housing below the button to effect resetting of the button. However, since the elastic member is usually exposed, the operation of the button may be unsmooth, and the button may be disabled due to the fact that the elastic member is easily displaced or skewed after the button is pressed a plurality of times. Disclosure of utility model In order to solve the technical problems, the utility model provides a battery pack capable of being pressed smoothly. The battery pack comprises a battery pack shell, a locking piece, a plurality of battery cells, a battery cell support and a circuit board, wherein the battery cell support, the battery cells and the circuit board are contained in the battery pack shell, each battery cell is installed in the battery cell support, the circuit board is arranged above the battery cell, the locking piece is used for locking and installing the battery pack into an electric tool, an elastic piece is further arranged below the locking piece, the elastic piece is used for resetting of the locking piece, the battery cell support is provided with a positioning protrusion, the circuit board is provided with a through hole, the positioning protrusion penetrates through the through hole, so that the circuit board is positioned and installed to the battery cell support, one end of the elastic piece is installed in the groove, and the other end of the elastic piece is abutted to the locking piece. Furthermore, positioning columns are arranged on two sides of the battery cell support respectively, and penetrate through the circuit board, so that the circuit board is positioned and mounted to the battery cell support. Further, the positioning protrusion and the top end of the positioning column are respectively provided with a guiding surface, and the guiding surfaces are used for guiding the circuit board to be mounted to the battery cell bracket. Further, the cell support is provided with at least two opposite positioning columns, and the positioning protrusions are respectively equal to the distance between the two positioning columns. Further, the battery cell support is provided with a top surface, a side wall is formed by extending from the top surface to a direction far away from the battery cell, the two side walls are spliced with the top surface to form the positioning protrusion, one end of the elastic piece is abutted to the top surface, and the side wall limits the elastic piece in the positioning protrusion. Further, the elastic member is a spring, and the side wall is a cylindrical side wall. Further, the back of the locking piece is provided with a mounting column, one end of the spring is sleeved on the mounting column, and the other end of the spring is mounted in the groove of the positioning protrusion. Further, the electric core support includes left socle and right branch frame, the left socle with the right branch frame is blocked respectively and is established each the both ends of electric core, the left socle with the right branch frame is followed respectively the top surface forms semi-circular lateral wall, the left socle with two after the right branch frame concatenation semi-circular lateral wall forms cylindrical lateral wall. Further, the circuit board and the battery cell bracket are fixed through a fastener. Further, the utility model also relates to a power tool comprising the battery pack. The beneficial effects are that: The battery cell support is provided with the positioning protrusions, so that the effect of rapidly positioning the circuit board can be achieved when the battery pack is manufactured, the movable position of the elastic piece can be limited, and the locking piece is prevented from being shifted to cause pressing failure. In addition, the positioning bulge also plays a guiding role, and the locking piece is limited to deform along the axial direction of the positioning bulge, so that the locking piece can be pressed smoothly. Drawings Fig. 1 is an exploded view of a battery pack in an embodiment of the present utility model. Fig. 2 is a schematic diagram illustrating an assembly of a battery cell holder and a circuit board of a battery pack according to an embodiment of the present utility model. Fig. 3 i