BI-DIRECTIONAL BATTERY VOLTAGE CONVERTER
First Claim
Patent Images
1. An electrical system for a vehicle, comprising:
- a system bus;
an alternator supplying a current to the system bus when mechanically driven by a prime mover;
an ignition switch selecting an operational state of the electrical system;
a primary battery connected to the system bus;
a first auxiliary battery module connected to the system bus comprisinga first auxiliary battery,a second auxiliary battery,a bi-directional battery voltage converter,a module controller selectively connecting one of the first auxiliary battery, and the second auxiliary battery to the bi-directional battery voltage converter; and
a main system controller operating the first auxiliary battery module in one ofa null mode, wherein the first auxiliary battery and the second auxiliary battery are disconnected from the electrical system,a charging mode, wherein one of the first auxiliary battery and the second auxiliary battery receives a current via the bi-directional battery voltage converter, anda discharging mode, wherein one of the first auxiliary battery and the second auxiliary battery supplies a current via the bi-directional battery voltage converter.
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Abstract
A battery module for use with a vehicle electrical system. The battery module includes a bi-directional battery voltage converter, a first battery, and a second battery. A first relay selectively connects the first battery to the bi-directional battery voltage converter. A second relay selectively connecting the second battery to the bi-directional battery voltage converter. A controller selectively energizes the first relay, selectively energizes the second relay, and controls a direction of current through the bi-directional battery voltage converter.
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Citations
20 Claims
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1. An electrical system for a vehicle, comprising:
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a system bus; an alternator supplying a current to the system bus when mechanically driven by a prime mover; an ignition switch selecting an operational state of the electrical system; a primary battery connected to the system bus; a first auxiliary battery module connected to the system bus comprising a first auxiliary battery, a second auxiliary battery, a bi-directional battery voltage converter, a module controller selectively connecting one of the first auxiliary battery, and the second auxiliary battery to the bi-directional battery voltage converter; and a main system controller operating the first auxiliary battery module in one of a null mode, wherein the first auxiliary battery and the second auxiliary battery are disconnected from the electrical system, a charging mode, wherein one of the first auxiliary battery and the second auxiliary battery receives a current via the bi-directional battery voltage converter, and a discharging mode, wherein one of the first auxiliary battery and the second auxiliary battery supplies a current via the bi-directional battery voltage converter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A battery module for use with a vehicle electrical system, comprising:
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a bi-directional battery voltage converter; a first battery; a second battery; a first relay selectively connecting the first battery to the bi-directional battery voltage converter; a second relay selectively connecting the second battery to the bi-directional battery voltage converter; and a controller selectively energizing the first relay, selectively energizing the second relay, and controlling a direction of current through the bi-directional battery voltage converter. - View Dependent Claims (15, 16, 17, 18)
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19. An electrical system for a vehicle, comprising:
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a system bus; an ignition switch selecting an operational state of the electrical system; a primary battery connected to the system bus; a first auxiliary battery module comprising a first auxiliary battery, a second auxiliary battery, a first bi-directional battery voltage converter, a first module controller selectively connecting one of the first auxiliary battery and the second auxiliary battery to the bi-directional battery voltage converter; a second auxiliary battery module comprising a third auxiliary battery, a fourth auxiliary battery, a second bi-directional battery voltage converter, a second module controller selectively connecting one of the first auxiliary battery and the second auxiliary battery to the bi-directional battery voltage converter; and a main system controller operating the first auxiliary battery module and the second auxiliary battery module to prioritize a recharging of one of the first, second, third, and fourth auxiliary batteries. - View Dependent Claims (20)
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Specification