METHOD AND SYSTEM FOR SUPPLYING ELECTRIC POWER TO A HYBRID MOTOR VEHICLE WITH DUAL ELECTRICAL ENERGY STORAGE DEVICES
First Claim
1. Method for supplying electric power to a hybrid motor vehicle with dual electrical energy storage devices (2, 6) of the type consisting of providing said vehicle firstly with an electric power network (1) comprising an electric motor/generator (3), and a first electrical energy storage device (2) with a first nominal voltage, and secondly with an electric service network (5) comprising a second electrical energy storage device (6) with a second nominal voltage which is lower than said first nominal voltage, said electric power network (1) and said service network (5) being connected to one another by a reversible direct/direct converter (9), wherein a first optimum intensity (IESS1) is determined, which circulates in said first storage device (2), and a second optimum intensity (IESS2) is determined, which circulates in said second storage device (6), according to functioning parameters of said first and second electrical energy storage devices (2, 6), such as to minimize losses by thermal dissipation.
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Accused Products
Abstract
Method used in a vehicle provided with an electrical power system (1), including an electrical engine/generator (3) and first electrical power storage (2) having a first nominal voltage, and moreover provided with a backup electrical system (5), including a second electrical power storage (6) having a second nominal voltage less than the first nominal voltage. The electrical power system and the backup system are connected by a reversible DC/DC converter (9). A first optimal power current strength (IESS1), flowing in the first storage (2), and a second optimal power current strength (IESS2), flowing in the second storage (6), are determined on the basis of operational parameters for the first and second electrical power storages so as to minimize losses due to heat dissipation. The first and second optimal power current strengths (IESS1, IESS2) are also determined on the basis of a reversible DC/DC converter output.
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21 Claims
- 1. Method for supplying electric power to a hybrid motor vehicle with dual electrical energy storage devices (2, 6) of the type consisting of providing said vehicle firstly with an electric power network (1) comprising an electric motor/generator (3), and a first electrical energy storage device (2) with a first nominal voltage, and secondly with an electric service network (5) comprising a second electrical energy storage device (6) with a second nominal voltage which is lower than said first nominal voltage, said electric power network (1) and said service network (5) being connected to one another by a reversible direct/direct converter (9), wherein a first optimum intensity (IESS1) is determined, which circulates in said first storage device (2), and a second optimum intensity (IESS2) is determined, which circulates in said second storage device (6), according to functioning parameters of said first and second electrical energy storage devices (2, 6), such as to minimize losses by thermal dissipation.
Specification