BlackBerry patent improves on battery pack

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batterypack2.jpgI, like many of you, once struggled with the back casing and battery on any device that’s ever sat in my pocket. The number of customers I used to see with broken casings and batteries because of improper gauging was ridiculous at my old job, but thanks to RIM and their great minds, a new patent that’s just surfaced should solve all of those struggles. The “slim line battery pack” patent boasts of a “mating notch on a terminal plate and may include a fingernail notch and/or one or more guide rails” – sounds promising, at least. Check out the patent’s abstract after the jump.

A battery pack is configured to reduce weight, enhance battery identification, ensure proper placement of a lid retaining the battery, and facilitate battery pack removal. The battery pack has one or more cells that lack an outer coverage except for a polymer sheathing.

The battery pack includes a mating notch on a terminal plate and may include a fingernail notch and/or one or more guide rails. The fingernail notch may be a single depression formed to allow a fingernail to slip onto the battery pack, may be a single depression and a ledge that are side-by-side, or may be formed of multiple ledges and/or depressions. There may be a single guide rail or multiple guide rails. Each guide rail preferably has a hollow interior section that is crossed by one or more ribs or segment.

So, struggles solved? I think that’s what this means. The patent goes into more detail, that’s for sure. So if you’re so inclined, check it out here.

The battery pack of the present invention offers improvements over the prior art through a synergy of structural elements. The structural elements and their arrangement may be varied such that certain structural elements appear in one embodiment but not another.

The improved battery pack arises from one or more of the following structural elements: 1) placing a notch on the bottom side of the battery aids in preventing placement of an improper battery and acts to retain the battery within the mounting compartment without unnecessary side to side movement; 2) placing guide rails (or guides) on the side of the battery opposite to the terminals, for example, the guides may be ribbed or solid and/or the guides may be molded with ribs or have the ribs removed; 3) a fingernail groove or notch that aids a user to remove the battery–instead of a single groove, there may be multiple parallel grooves in a corrugated manner–the fingernail groove may be flush with the side surface of the battery or may be indented into the battery body; 4) using the “hot melt” method of battery construction to minimize the battery pack size; and 5) the molding at one end of the pins is chamfered to facilitate full contact between the connector pin and the battery terminal