Battery unit and a portable battery-operated device including such a battery unit
First Claim
1. A battery unit for use in an electronic device, which battery unit comprises a housing with a cell for generating electricity, with output contacts, and with external walls comprising an upper wall, a lower wall and side walls,the housing being provided with a substantially flat frame with flat ribs and a recess therebetween, said cell being comprised in said recess, and said walls forming part of an external envelope of the battery unit, the external envelope substantially being made of metal plating of which at least portions of are provided around the frame.
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Accused Products
Abstract
A battery unit may be used in devices and appliances in which a particularly light and flat battery is desired, such as in particular portable telephones. The battery unit has a housing in which one or several cells generating electricity are provided, such as, for example, a lithium polymer cell. The battery unit is provided with output contacts by means of which the cells can be electrically connected to an appliance, for example by means of resilient contacts present in the appliance. The battery unit is further provided with a housing having a number of external walls such as an upper wall, a bottom wall, and side walls. The housing is internally provided with a substantially flat frame with flat ribs for the purpose of reinforcement and one or several recesses between them. The cell or cells is (are) provided in a recess, possibly in several respective recesses, of the frame. An external envelope of thin metal plating is provided around the frame so that the entire assembly is well protected and nevertheless has minimized dimensions and a minimized mass.
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Citations
11 Claims
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1. A battery unit for use in an electronic device, which battery unit comprises a housing with a cell for generating electricity, with output contacts, and with external walls comprising an upper wall, a lower wall and side walls,
the housing being provided with a substantially flat frame with flat ribs and a recess therebetween, said cell being comprised in said recess, and said walls forming part of an external envelope of the battery unit, the external envelope substantially being made of metal plating of which at least portions of are provided around the frame.
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10. A portable battery-operated device with a battery unit, said battery unit comprising a housing with a cell for generating electricity, with output contacts, and with external walls comprising an upper wall, a lower wall and side walls,
the housing being provided with a substantially flat frame with flat ribs and a recess therebetween, said cell being comprised in said recess, and said walls forming part of an external envelope of the battery unit, the external envelope substantially being made of metal plating of which at least portions are provided around the frame, said cell comprising a lithium polymer cell whose general shape is rectangular, said lithium polymer cell comprising a two-part foil envelope having a trough-shaped part shaped by means of heat and having a bottom, vertical walls and a circumferential flange which merges into the vertical walls and which is parallel to the bottom, and a flat lid provided on the circumferential flange, and the lid and the circumferential flange being united to one another by means of heat sealing, the external envelope comprising a trough-shaped part with a bottom, vertical walls, and a circumferential flange which merges into the vertical walls and which is parallel to the bottom, and a lid, said two-part foil envelope of said lithium polymer cell being provided in the trough-shaped part of the external envelope such that the lid of the two-part foil envelope lies against the bottom of said trough-shaped part of the external envelope, the circumferential flange of the external envelope being bent back over the frame placed therein such that a bent-back portion of said circumferential flange of the external envelope covers part of the width of a rib of the frame, said lid of the external envelope being provided over the frame so as to lie with a circumferential edge within the bent-back portion, and both said bent-back portion and the lid of the external envelope being connected to the frame, and the battery unit being exposed to an outside of the device and being inserted with the external flange in a groove present in the device so as to direct the flange to the inside of the device.
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11. A portable battery-operated device with a battery unit, said battery unit comprising:
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a housing with external walls comprising an upper wall, a lower wall and side walls;
a substantially flat frame with flat ribs, said frame being comprised inside said housing; and
at least one cell for generating electricity, said at least one cell being comprised in at least one recess between said flat ribs, said external walls forming part of an external envelope of said battery unit, said external envelope substantially being made of metal plating of which at least portions are provided around the frame.
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Specification
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- Resources
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Current AssigneeSTMicroelectronics International N.V. (STMicroelectronics NV)
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Original AssigneeUS Philips Corporation (Koninklijke Philips N.V.)
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InventorsBarbier, Fabrice R. H., Cachard, Vincent, De Larminat, Alain
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Primary Examiner(s)Chaney, Carol
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Assistant Examiner(s)Crepeau, Jonathan
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Application NumberUS09/185,003Time in Patent Office896 DaysField of Search429/124, 429/127, 429/162, 429/163, 429/96, 429/97, 429/99, 429/100, 429/121US Class Current429/96CPC Class CodesH01M 10/4257 Smart batteries, e.g. elect...H01M 50/296 characterised by terminals ...H01M 50/55 on the same side of the cellH04M 1/0262 for a battery compartmentY02E 60/10 Energy storage using batteriesY02P 70/50 Manufacturing or production...
