BI-DIRECTIONAL BATTERY VOLTAGE CONVERTER
First Claim
1. A method of balancing current in a vehicle electric system, the vehicle electrical system comprising a system bus, a first battery, a first bi-directional battery voltage converter selectively transferring a first current between the first battery and the system bus, a second battery, a second bi-directional battery voltage converter selectively transferring a second current between the second battery and the system bus, and a controller controlling the first bi-directional battery voltage converter and the second bi-directional battery voltage converter, the method comprising:
- sensing the first current;
providing a first signal related to the first current to the controller;
sensing the second current;
providing a second signal related to the second current to the controller; and
controlling the first bi-directional battery voltage converter and the second bi-directional battery voltage converter so that the first current and the second current are equal portions of a load current supplied to an electrical load connected to the system bus.
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Accused Products
Abstract
A method of balancing current in a vehicle electric system having a system bus, a first battery, a first bi-directional battery voltage converter selectively transferring a first current between the first battery and the system bus, a second battery, a second bi-directional battery voltage converter selectively transferring a second current between the second battery and the system bus, and a controller controlling the first bi-directional battery voltage converter and the second bi-directional battery voltage converter. The method includes sensing the first current and sensing the second current. The first bi-directional battery voltage converter and the second bi-directional battery voltage converter are controlled so that the first current and the second current are equal portions of a load current supplied to an electrical load connected to the system bus.
24 Citations
10 Claims
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1. A method of balancing current in a vehicle electric system, the vehicle electrical system comprising a system bus, a first battery, a first bi-directional battery voltage converter selectively transferring a first current between the first battery and the system bus, a second battery, a second bi-directional battery voltage converter selectively transferring a second current between the second battery and the system bus, and a controller controlling the first bi-directional battery voltage converter and the second bi-directional battery voltage converter, the method comprising:
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sensing the first current; providing a first signal related to the first current to the controller; sensing the second current; providing a second signal related to the second current to the controller; and controlling the first bi-directional battery voltage converter and the second bi-directional battery voltage converter so that the first current and the second current are equal portions of a load current supplied to an electrical load connected to the system bus. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A vehicle electrical system for supplying electrical power to an electrical toad, the system comprising:
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a system bus, a first battery; a first bi-directional battery voltage converter controllably transferring a first current between the first battery and the system bus; a second battery; a second bi-directional battery voltage converter controllably transferring a second current between the second battery and the system bus; and a controller for controlling the first bi-directional battery voltage converter and the second bi-directional battery voltage converter such that the first current and the second current are equal portions of a load current supplied to an electrical load connected to the system bus. - View Dependent Claims (10)
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Specification