Battery pack

Patent metadata

Field	Value
Publication number	US-2022367963-A1
Application number	US-202017761535-A
Country	US
Kind code	A1
Filing date	Sep 24, 2020
Priority date	Sep 30, 2019
Publication date	Nov 17, 2022
Grant date	—

Abstract

A battery pack may include a battery cell; a control board disposed above the battery cell and connected to the battery cell; a plurality of terminals disposed on the control board and disposed side by side in a left-right direction; a plurality of partition wall disposed on the control board; and an outer case housing the battery cell, the control board, the plurality of terminals, and the plurality of partition walls, and having an upper surface comprising a terminal reception part configured to receive a terminal of the power tool. The plurality of terminals may include a first terminal and a second terminal adjacent to the first terminal in the left-right direction. At least two of the partition walls are disposed between the first terminal and the second terminal.

First claim

1 . A battery pack configured to be mounted on a power tool by being slid from front to rear, the battery pack comprising:
a battery cell; a control board disposed above the battery cell and connected to the battery cell; a plurality of terminals disposed on the control board and disposed side by side in a left-right direction; a plurality of partition walls disposed on the control board; and an outer case housing the battery cell, the control board, the plurality of terminals, and the plurality of partition walls, and having an upper surface comprising a terminal reception part configured to receive a terminal of the power tool, wherein the plurality of terminals includes a first terminal and a second terminal adjacent to the first terminal in the left-right direction, and at least two of partition walls among the plurality of partition walls are disposed between the first terminal and the second terminal.

2 . The battery pack according to claim 1 , wherein
the at least two partition walls, which are disposed between the first terminal and the second terminal, include a first partition wall extending in a front-rear direction and a second partition wall disposed between the first partition wall and the second terminal and extending in the front-rear direction, and the battery pack further comprises: a coupling part coupling the first partition wall and the second partition wall, wherein an inclined part inclined in the front-rear direction is disposed on at least a part of an upper surface of the coupling part.

3 . The battery pack according to claim 2 , wherein
the inclined part is inclined such that a surface of the inclined part on a first direction side in the front-rear direction is located lower than a surface of the inclined part on a second direction side opposite to the first direction side, and a first control board hole is defined in the control board more on the first direction side than the coupling part is.

4 . The battery pack according to claim 1 , wherein
the at least two partition walls, which are disposed between the first terminal and the second terminal, include a first partition wall extending in a front-rear direction and a second partition wall disposed between the first partition wall and the second terminal and extending in the front-rear direction, and the battery pack further comprises: a coupling part coupling the first partition wall and the second partition wall, wherein a through hole is defined in the coupling part, and a second control board hole is defined in the control board that is below the through hole.

5 . The battery pack according to claim 2 , wherein
the plurality of terminals includes a third terminal disposed side by side with the second terminal in the front-rear direction and adjacent to the first terminal in the left-right direction, the first partition wall extends in the front-rear direction such that the first partition wall is disposed between the first terminal and the second terminal and disposed between the first terminal and the third terminal, the plurality of partition walls includes a third partition wall disposed between the first partition wall and the third terminal and extending in the front-rear direction, and the coupling part couples the first partition wall and the third partition wall.

6 . A battery pack configured to be mounted on a power tool by being slid, the battery pack comprising:
a battery cell; a control board disposed above the battery cell and connected to the battery cell; a plurality of terminals disposed on the control board; a first partition wall disposed on the control board and surrounding a periphery of the first terminal among the plurality of terminals; and an outer case having an upper surface comprising a terminal reception part configured to receive a terminal of the power tool, wherein a board hole is defined in the control board that is inside the first partition wall.

7 . The battery pack according to claim 6 , further comprising:
two or more battery cells; and a cell case housed inside the outer case, holding the two or more of battery cells, and disposed below the control board, wherein the two or more battery cells are disposed parallel to a bottom surface of the outer case and with an interval between each other, and the cell case comprises a case hole defined between two adjacent battery cells among the two or more battery cells.

8 . The battery pack according to claim 7 , wherein
the case hole of the cell case comprises a first case hole defined in an upper surface of the cell case that is between the two adjacent battery cells and a second case hole defined in a lower surface of the cell case at a position opposed to the first case hole, the first case hole penetrates through the upper surface of the cell case in an up-down direction, and the second case hole penetrates through the lower surface of the cell case in the up-down direction.

9 . The battery pack according to claim 7 , wherein
a protruding part extending upward is disposed on an upper surface of the cell case that is between the two adjacent battery cells at ends of the battery cells in a longitudinal direction, and the case hole of the cell case comprises a third case hole defined in the protruding part and penetrating through the protruding part in the longitudinal direction of the battery cells.

10 - 13 . (canceled)

14 . A battery pack configured to be mounted on a power tool by being slid from front to rear, the battery pack comprising:
a battery cell; a control board disposed above the battery cell and connected to the battery cell; a plurality of terminals disposed on the control board; one or more partition walls disposed on the control board; and an outer case having an upper surface comprising a terminal reception part configured to receive a terminal of the power tool, wherein the plurality of terminals includes one or more power terminals and one or more signal terminals disposed side by side with the one or more power terminals in the left-right direction, a first front-rear directional partition wall extending in a front-rear direction is disposed between the power terminal and the signal terminal that are disposed side by side at a frontmost side among the plurality of power terminals and the plurality of signal terminals that are disposed side by side in the left-right direction, and a left-right directional partition wall extending in the left-right direction is disposed in front of one of the power terminal and the signal terminal that are disposed side by side at the frontmost side, and the left-right directional partition wall is not disposed in front of another of the power terminal and the signal terminal that are disposed side by side at the frontmost side.

15 . The battery pack according to claim 14 , wherein
the one or more power terminals include a first power terminal that is the power terminal of the power terminal and the signal terminal that are adjacent to each other among the power terminal and the signal terminal disposed side by side at the frontmost side, the one or more signal terminals include a first signal terminal that is the signal terminal of the power terminal and the signal terminal that are adjacent to each other, the first front-rear directional partition wall is disposed between the first power terminal and the first signal terminal in the left-right direction, and the left-right directional partition wall is disposed in front of one of the first power terminal and the first signal terminal, and the left-right directional partition wall is not disposed in front of another of the first powe

Assignees

• Makita Corp

Inventors

• Nagahama Tatsuya
• Gyoda Minoru

Classifications

• H01M50/258

  Modular batteries; Casings provided with means for assembling · CPC title

• H01M50/284

  with incorporated circuit boards, e.g. printed circuit boards [PCB] · CPC title

• H01M50/593

  Spacers; Insulating plates · CPC title

• B25F5/00

  Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for · CPC title

• H01M50/213 Primary

  adapted for cells having curved cross-section, e.g. round or elliptic (H01M50/209, H01M50/216 take precedence) · CPC title