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CN-224217643-U - Battery pack and electric tool thereof

CN224217643UCN 224217643 UCN224217643 UCN 224217643UCN-224217643-U

Abstract

The utility model discloses a battery pack, which comprises a battery pack shell, wherein a plurality of electric cores, an electric core bracket and a circuit board are accommodated in the battery pack shell, the electric cores are arranged on the electric core bracket, the circuit board is arranged above the electric cores, and an electric terminal is arranged on the circuit board. The battery cell support comprises a retaining wall which extends away from the battery cell, the retaining wall forms a concave clamping groove, and the circuit board is kept in the clamping groove. The retaining wall of electric core support has formed the draw-in groove that is used for acceping the circuit board, and the retaining wall has restricted the activity space of circuit board, consequently set up the electric terminal on the circuit board and also receive the restriction, avoid electric tool at work because high frequency vibration leads to the electric terminal wearing and tearing of circuit board serious to the condition that electric terminal opening grow finally electric connection became invalid.

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, accept several electric core, electric core support and circuit board in the battery package shell, the electric core install in the electric core support, the circuit board set up in the top of electric core, set up electric terminal on the circuit board, a serial communication port, the electric core support is including keeping away from the barricade that the electric core extends, the barricade forms the draw-in groove of indent, the circuit board keep in the draw-in groove.
  2. 2. The battery pack of claim 1, wherein the retaining wall has an upper end surface remote from the cells, and the circuit board does not protrude from the upper end surface of the retaining wall.
  3. 3. The battery pack according to claim 2, wherein the cell holder is provided with a plurality of retaining walls, the retaining walls form the clamping grooves having bottom surfaces, the upper end surfaces of the retaining walls protrude farther away from the cells than the bottom surfaces of the clamping grooves, the bottom surfaces of the retaining walls are connected, and the circuit board is placed on the bottom surfaces.
  4. 4. The battery pack of claim 3, wherein the cell support includes at least one shaped retaining wall that is recessed inwardly to form an L-shaped slot in which one of the corners of the circuit board is received.
  5. 5. The battery pack of claim 3, wherein the clamping groove has a side wall connecting the upper end surface of the retaining wall and the bottom surface of the clamping groove, and a gap exists between the circuit board and the side wall.
  6. 6. The battery pack of claim 5, wherein a gap between the circuit board and the side wall of the card slot is 0.1mm-0.5mm.
  7. 7. The battery pack of claim 1, wherein the cell support comprises a left support and a right support, the left support and the right support are respectively clamped at two ends of the cell, and the left support and the right support are respectively provided with at least one retaining wall.
  8. 8. The battery pack of claim 1, wherein the circuit board is fixedly connected to the cell support by fasteners.
  9. 9. The battery pack according to claim 2, wherein the battery pack case comprises an upper case and a lower case, wherein at least one bead is provided on an inner wall of the upper case, and the bead is located above the upper end face of the retaining wall of the cell holder when the upper case is mounted to the lower case.
  10. 10. A power tool comprising a 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 In the electric tool, a battery pack is used as a power supply to supply power, and the battery pack is connected with the electric tool through an electric terminal to supply power. When the high-power electric tool works, the vibration frequency is high, and the vibration is large. When vibrating at high frequency, the electrical terminals of the battery pack are worn seriously, and the opening becomes large, resulting in poor contact with the end of the power tool. Meanwhile, the electric connection piece between the electric core in the battery pack and the circuit board can be broken due to high-frequency vibration, or the joint of the electric connection piece and the electric core is subjected to desoldering, so that the battery pack is invalid. Disclosure of utility model In order to solve the technical problems, the utility model provides a battery pack capable of stabilizing a circuit board and preventing an electrical terminal from failure. The battery pack comprises a battery pack shell, wherein a plurality of electric cores, an electric core support and a circuit board are contained in the battery pack shell, the electric cores are installed on the electric core support, the circuit board is arranged above the electric cores, an electric terminal is arranged on the circuit board, the electric core support comprises a retaining wall which is far away from the electric cores and extends, the retaining wall forms a concave clamping groove, and the circuit board is kept in the clamping groove. Further, the retaining wall is provided with an upper end face far away from the battery cell, and the circuit board does not protrude out of the upper end face of the retaining wall. Further, the electric core support sets up the several the barricade, the barricade forms the draw-in groove has the bottom surface, the up end of barricade compare in the bottom surface of draw-in groove is more outstanding in keeping away from in the direction of electric core, each the barricade corresponds the bottom surface links to each other, the circuit board is placed on the bottom surface. Further, the battery cell support comprises at least one special-shaped retaining wall, the special-shaped retaining wall is inwards recessed to form an L-shaped clamping groove, and one corner of the circuit board is accommodated in the L-shaped clamping groove. Further, the clamping groove is provided with a side wall, the side wall is connected with the upper end face of the retaining wall and the bottom face of the clamping groove, and a gap exists between the circuit board and the side wall. Further, the clearance between the circuit board and the side wall of the clamping groove is 0.1mm-0.5mm. Further, the electric core support includes left socle and right branch frame, the left socle with right branch frame centre gripping respectively the both ends of electric core, the left socle with right branch frame is provided with at least one respectively the barricade. Further, the circuit board is fixedly connected with the battery cell bracket through a fastener. Further, the battery pack shell comprises an upper shell and a lower shell, at least one protruding rib is arranged on the inner wall of the upper shell, and the protruding rib is located above the upper end face of the retaining wall of the battery cell support when the upper shell is mounted on the lower shell. Further, the utility model also relates to a power tool comprising the battery pack. The beneficial effects are that: The retaining wall of electric core support has formed the draw-in groove that is used for acceping the circuit board, and the retaining wall has restricted the activity space of circuit board, consequently set up the electric terminal on the circuit board and also receive the restriction, avoid electric tool at work because high frequency vibration leads to the electric terminal wearing and tearing of circuit board serious to the condition that electric terminal opening grow finally electric connection became invalid. 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 is a schematic view of a battery pack hidden circuit board and an upper cover in an embodiment of the utility model. Fig. 4 is a schematic view of a cell holder according to an embodiment of the utility model. Fig. 5 is a schematic view of the upper cover in the embodiment of the present utility model. Fig. 6 is a cross-sectional view of a battery pack in an embodiment of the present utility model. The reference sign comprises a battery pack-100, an upper shell-11,