Battery pack and method of manufacture

Patent metadata

Field	Value
Publication number	US-12397408-B2
Application number	US-202217696585-A
Country	US
Kind code	B2
Filing date	Mar 16, 2022
Priority date	May 18, 2014
Publication date	Aug 26, 2025
Grant date	Aug 26, 2025

Abstract

A method of manufacturing a battery pack including the creation of a support board for enabling conversion of the battery pack from providing a first voltage to providing a second voltage. The support board is created by injection molding about a precut set of power traces for coupling a converting element to a plurality of battery cells. The power traces couple the plurality of battery cells to a set of battery pack terminals. The support board may be mechanically coupled to a battery cell holder.

First claim

What is claimed is:

1. A method of manufacturing a battery pack, comprising the steps of:
cutting a trace layout from a sheet of material, the trace layout including at least one trace;
bending the at least one trace to provide a set of terminal flags;
placing the trace layout in an injection mold;
injecting a plastic material into the injection mold to form a support board having a planar surface that is approximately perpendicular to the set of terminal flags, such that a portion of the at least one trace remains exposed to present a plurality of contact pads at a position remote from a respective terminal flag and in the planar surface of the support board;
providing a set of battery cells;
providing a battery cell holder for holding the set of battery cells;
mechanically coupling the support board to the battery cell holder; and
electrically coupling the at least one trace to the set of battery cells.

2. The method of manufacturing a battery pack, as recited in claim 1 , further wherein the trace layout including a plurality of traces.

3. The method of manufacturing a battery pack, as recited in claim 1 , further comprising a step of punching support board holes in the support board creating multiple traces from the trace layout.

4. The method of manufacturing a battery pack, as recited in claim 1 , further comprising a step of exposing a plurality of trace couplers from the support board and electrically coupling the at least one trace to the set of battery cells through the plurality of trace couplers.

5. The method of manufacturing a battery pack, as recited in claim 1 , further comprising a step of providing a set of battery pack terminals and coupling a battery pack terminal of the set of battery pack terminals to each terminal flag of the set of terminal flags.

6. The method of manufacturing a battery pack, as recited in claim 1 , further comprising a step of configuring the trace layout such that overlapping portions of the trace layout are at different heights relative to the support board allowing plastic material to position between the overlapping portions thereby electrically isolating the overlapping portions.

Assignees

• Black & Decker Inc

Inventors

• White Daniel J
• Velderman Matthew J
• Varipatis Michael
• Osborne Nathan J

Classifications

• H02J4/25

  for transfer of electric power between AC and DC networks, e.g. for supplying the DC section within a load from an AC mains system · CPC title

• H02J7/47

  Arrangements for checking compatibility or authentication between one component, e.g. a battery or a battery charger, and another component, e.g. a power source · CPC title

• H02J7/751

  concerning the insertion or the connection of the batteries · CPC title

• H02J7/575 Primary

  Parallel/serial switching of connection of batteries to charge or load circuit · CPC title

• H02J7/94

  in response to battery current · CPC title