Power-supply-apparatus in a vehicle
First Claim
1. A power supply device for a motor vehicle, comprising a first voltage storage for supplying a motor vehicle supply system;
- a second voltage storage electrically connected to said first voltage storage and electrically connectable with a starter;
at least one generator for charging said voltage storages; and
a charging/separating module establishing an electrical connection of said voltage storages with one another and with said at least one generator and interrupting the electrical connection between said voltage storages and between at least one of said voltage storages and said at least one generator as a function of predeterminable parameters, said charging/separating module having an amplifier circuit and a power switch which is controlled by said amplifier circuit and is in a conductive or blocking state depending on a control signal of said amplifier circuit.
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Accused Products
Abstract
A power supply for a motor vehicle includes an additional voltage storage associated with the starter and the starter is separated from the rest of the vehicle supply system during the starting process by a charging/separating module. Since different variables of the vehicle supply system are supplied to this charging/separating module and corresponding measurements and detection take place within this module, the charging/separating module itself switches off or switches over in a manner which is optimally adapted to requirements.
Since the voltage storage associated with the starter and the rest of the vehicle supply battery can be operated completely independently from one another, they can be freely selected based on requirements (starting or buffering). A particularly reliable and safe charging of this voltage storage is ensured at a reduced nominal voltage of the voltage storage, also designated as starter storage.
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Citations
10 Claims
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1. A power supply device for a motor vehicle, comprising a first voltage storage for supplying a motor vehicle supply system;
- a second voltage storage electrically connected to said first voltage storage and electrically connectable with a starter;
at least one generator for charging said voltage storages; and
a charging/separating module establishing an electrical connection of said voltage storages with one another and with said at least one generator and interrupting the electrical connection between said voltage storages and between at least one of said voltage storages and said at least one generator as a function of predeterminable parameters, said charging/separating module having an amplifier circuit and a power switch which is controlled by said amplifier circuit and is in a conductive or blocking state depending on a control signal of said amplifier circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
- a second voltage storage electrically connected to said first voltage storage and electrically connectable with a starter;
Specification