Battery pack and system for a battery pack wire bonding
AssigneeMilwaukee Electric Tool Corporation
InventorsMatthew R. Polakowski, Kyle C. Fassbender
Life of this patent
Estimating the term…
Abstract
A battery pack including a supporting structure, a battery cell housed within the supporting structure, a sleeve partially surrounding the battery cell, a bus bar, and a wire. The sleeve extends over a portion of a first end of the battery cell and has a laser-cut cutaway portion exposing a laser-cleaned first bonding area of the first end of the battery cell. The laser-cleaned first bonding area is positioned adjacent to an outer perimeter of the first end of the battery cell. The bus bar has a laser-cleaned second bonding area. The wire is bonded to the first and second laser-cleaned bonding areas to electrically connect the battery cell to the bus bar.
Claims7
A battery pack comprising:
- a supporting structure;
- a battery cell housed within the supporting structure;
- a sleeve at least partially surrounding the battery cell and extending over a portion of a first end of the battery cell, the sleeve having a laser-cut cutaway portion exposing a laser-cleaned first bonding area of the first end of the battery cell, the laser-cleaned first bonding area positioned adjacent an outer perimeter of the first end of the battery cell;
- a bus bar having a laser-cleaned second bonding area, the bus bar comprising a first material layer at least partially removed to form the laser-cleaned second bonding area, the laser-cleaned second bonding area having a contrasting surface from a remainder of the bus bar;
- and
- a wire bonded to each of the laser-cleaned first bonding area and the laser-cleaned second bonding area to electrically connect the battery cell to the bus bar.
A system for preparing a battery pack for wire bonding, the system comprising:
- a battery pack;
- including
- a supporting structure,
- a battery cell housed within the supporting structure,
- a sleeve at least partially surrounding the battery cell and extending over a portion of a first end of the battery cell, the sleeve having a laser-cut cutaway portion exposing a laser-cleaned first bonding area of the first end of the battery cell, the laser-cleaned first bonding area positioned adjacent an outer perimeter of the first end of the battery cell,
- a bus bar having a laser-cleaned second bonding area, the bus bar comprising a first material layer at least partially removed to form the laser-cleaned second bonding area, the laser-cleaned second bonding area having a contrasting surface from a remainder of the bus bar, and
- a wire bonded to each of the laser-cleaned first bonding area and the laser-cleaned second bonding area to electrically connect the battery cell to the bus bar;
- a control unit;
- and
- a light source configured to emit a laser beam associated with the laser-cut cutaway portion and the laser-cleaned first bonding area and the laser-cleaned second bonding area.
Dependencies are inferred from the claim text.