Battery pack for a portable electric apparatus and a method for the charging thereof
First Claim
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1. A battery pack for a portable electric apparatus, comprising:
- at least one battery cell,a first terminal for receiving charging current from the apparatus,a second terminal for feeding supply current to the apparatus,a third terminal for establishing a ground line common to the apparatus and the battery pack,a first voltage controller arranged between the first terminal and the at least one battery cell, anda second voltage controller arranged between the second terminal and the at least one battery cell.
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Abstract
A battery pack for a portable electric apparatus has one or more than one battery cells and terminals for electric connection to the apparatus. The battery pack has a first terminal for receiving charging current from the apparatus, a second terminal for feeding supply current to the apparatus, and a third terminal for establishing a zero or ground line common to the apparatus and the battery pack. Furthermore, the battery pack has a first voltage converter arranged between the first terminal and the battery cell(s), and a second voltage converter arranged between the second terminal and the battery cell(s).
31 Citations
17 Claims
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1. A battery pack for a portable electric apparatus, comprising:
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at least one battery cell, a first terminal for receiving charging current from the apparatus, a second terminal for feeding supply current to the apparatus, a third terminal for establishing a ground line common to the apparatus and the battery pack, a first voltage controller arranged between the first terminal and the at least one battery cell, and a second voltage controller arranged between the second terminal and the at least one battery cell. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of charging at least one battery cell in a battery pack for a portable electric apparatus, comprising the steps of:
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supplying charging current/voltage and charging control information from the apparatus to the battery pack via a first terminal; supplying supply current/voltage and information about momentary charging status of the at least one battery cell from the battery pack to the apparatus via a second terminal; and
,establishing a ground line common to the apparatus and the battery pack via a third terminal. - View Dependent Claims (14, 15, 16, 17)
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Specification