Electric battery management device
First Claim
1. A management device (1) for a plurality of electric battery elements (2) connected in series, comprising a plurality of battery management modules (4), each management module being connected in parallel to the terminals of a respective battery element (2) and supplied by its output voltage, the management modules (4) including a digital circuit (11) and being connected to a control unit (5) of the battery by at least a digital liaison (9, 9'"'"') so is to be able to exchange binary information between the digital circuits and the control unit of the battery, wherein said management modules (4) are connected in series by said digital liaison (9, 9'"'"'), and wherein electrical isolation between successive ones of said management modules in said digital liaison is provided by at least one capacitor connected in series in said digital liaison (9, 9'"'"') between adjacent ones of said successive management modules, such that the binary information may be exchanged between each management module (4) and the control unit (5) independently of the electric potentials at the terminals of the battery elements (2).
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Accused Products
Abstract
The device 1 for the management of a plurality electric battery elements 2 connected in series, comprises a plurality of battery management modules 4, each management module being connected in parallel to the terminals of a respective battery element 2 and supplied by its output voltage, the management modules 4 including a digital circuit 11 and being connected in series by at least a digital liaison 9, 9'"'"' so as to exchange binary information between said digital circuit 11 and a control unit 5 of the battery, and is characterized in that at least a capacitor 8, 8'"'"' is connected in series on said digital liaison 9, 9'"'"' so that the binary information may be exchanged between each management module 4 and the unit control 5, independently of the electric potentials at the terminals of the battery elements 2.
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Citations
10 Claims
- 1. A management device (1) for a plurality of electric battery elements (2) connected in series, comprising a plurality of battery management modules (4), each management module being connected in parallel to the terminals of a respective battery element (2) and supplied by its output voltage, the management modules (4) including a digital circuit (11) and being connected to a control unit (5) of the battery by at least a digital liaison (9, 9'"'"') so is to be able to exchange binary information between the digital circuits and the control unit of the battery, wherein said management modules (4) are connected in series by said digital liaison (9, 9'"'"'), and wherein electrical isolation between successive ones of said management modules in said digital liaison is provided by at least one capacitor connected in series in said digital liaison (9, 9'"'"') between adjacent ones of said successive management modules, such that the binary information may be exchanged between each management module (4) and the control unit (5) independently of the electric potentials at the terminals of the battery elements (2).
Specification