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Fuel Cells

Improved-battery-assembly

Contact block in a battery pack having snap in features

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Improved battery assembly

Details

Inventors: Tuttle, Mark E.;
Assignee: Micron Communications, Inc. (Boise, ID)
Primary Examiner: Skapars; Anthony
Assistant Examiner:
Attorney, Agent or Firm: Gratton; Stephen A.

An improved battery, an improved battery contact assembly and an improved method for attaching a battery to a substrate are provided. The battery includes a housing and a cover for attachment to the housing by crimping. During the crimping process a portion of the housing is bent over a portion of the cover such that a portion of the housing is substantially co-planar with a portion of the cover. Thus the two co-planar surfaces provide the positive and negative contact surfaces of the battery on a single side of the battery. The receiving portion of the contact assembly includes a substrate having a pair of contacts formed thereon. The contacts are shaped and sized to match the contact surfaces of the battery. The battery is attached to the substrate and traces using an electrically conducting adhesive.

DETAILED DESCRIPTION In accordance with the present invention, an improved battery and an improved battery contact assembly are provided.
The battery includes: a housing having a planar contact surface; a cathode adjacent to the housing; a cover having a planar contact surface; an anode adjacent to the cover; a separator between the anode and cathode; and a non-conductive gasket crimped between the housing and cover to seal the battery and prevent electrical shorting between the contact surfaces.
The housing and cover are crimped together such that the contact surfaces on the housing and cover are substantially co-planar to one another.
With this arrangement the positive and negative terminals of the battery are on a same side of the battery and are substantially co-planar to one another.
This permits the battery to be attached to a substrate with a single layer of conductive adhesive.
A contact assembly for mounting the battery includes: a substrate having a battery receiving portion; a positive contact formed on the substrate; a negative contact formed on the substrate; and an insulating member for insulating the contacts from one another.
In an illustrative embodiment the insulating member comprises an insulator patch placed over a portion of one of the contacts or applied directly to the battery.
In an alternate embodiment the substrate is formed as an interlevel substrate, and the insulating member comprises an interlevel connector formed within the substrate in electrical communication with one of the contacts.
For attaching the battery to the substrate, a layer of an adhesive, such as a z-axis anisotropic adhesive, is formed on the substrate over the contacts.
The battery is positioned such that the negative contact surface of the battery is adjacent to the negative contact on the substrate but insulated from the positive contact on the substrate by the insulator patch or interlevel connection.
Additionally, the battery is positioned such that the positive contact surface of the battery is adjacent to the positive contact on the substrate

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