Electrical system for a motor vehicle, including at least one supercapacitor
AssigneeMagneti Marelli S.p.A.
InventorPietro Pizzi
Life of this patent
Estimating the term…
Abstract
The system includes at least one auxiliary electrical user device which, in order to be activated, needs a high power for a short period of time, a rechargeable battery, an electrical generator for recharging the battery and at least one supercapacitor for storing enough energy to activate the user device The connection of the supercapacitor to the user device is controlled by an electronic unit in dependence on the charge state of the supercapacitor and the temperature of the user device.
Claims5
An electrical system for a motor vehicle including at least one auxiliary user device which, in order to be activated, needs a high electrical power for a relatively short period of time, the system including in combination:
- a rechargeable storage battery,
- an electrical generator for recharging the battery,
- at least one supercapacitor disposed immediately adjacent the user device for storing enough electrical energy to activate the user device,
- switch means for switching between at least a first and second condition, the first condition connecting the supercapacitor to the electrical generator to enable the supercapacitor to be charged/recharged, and the second condition connecting the supercapacitor to the user device in order to activate the user device,
- electrical temperature sensor means associated with the user device,
- and
- an electronic control unit which is connected to the supercapacitor and to the temperature sensor means, and which controls the switch means, the electronic control circuit placing the switch means in the second condition connecting the supercapacitor to the user device only when the charge in the supercapacitor is greater than a predetermined value and the temperature detected by the temperature sensor means is below a predetermined temperature.
Dependencies are inferred from the claim text.