FR3047448B1 - ELECTRIC POWER DISTRIBUTION SYSTEM FOR MOTOR VEHICLE - Google Patents

Abstract

The invention relates to a system (10) for distributing electrical energy for a motor vehicle, the system (10) comprising at least one vehicle (12a, 12b) equipped with a combustion engine, a storage device (14a, 14b ) of the electrical energy which equips the vehicle (12a, 12b), and a charging device (16a, 16b) of the storage device (14a, 14b) with electrical energy, the charging device (16a, 16b) being adapted to transform all or part of the kinetic energy generated by the combustion engine into electricity, the system (10) being characterized in that it comprises at least one electrical energy exchange device (20a) which is adapted to exporting electrical energy out of the associated vehicle (12a, 12b) from said storage device (14a, 14b) to an electrical grid (22) or other electrical energy storage device.

Description

The invention relates to an electric power distribution system for a motor vehicle, more particularly a system for the delayed use of the electrical energy stored in the vehicle.

A combustion engine vehicle is generally equipped with an electric battery which is supplied with electricity by a charging device adapted to transform all or part of the kinetic energy of the combustion engine into electricity.

The charging device is for example an alternator which is rotated by the combustion engine of the vehicle, the alternator transforming the kinetic energy of the motor into electric current which supplies the battery. The energy stored in the battery can power accessories such as lights, wipers or starter.

When the battery has reached its maximum charge level, the alternator continues to be rotated by the combustion engine, the alternator then producing electrical energy that is not systematically used and therefore lost.

The present invention aims in particular to solve this drawback and also aims to allow the deferred use of surplus electrical energy produced and not consumed by the vehicle.

For this purpose, the invention relates to an electric power distribution system for a motor vehicle, the system comprising at least: a vehicle equipped with a combustion engine, a device for storing electrical energy which the vehicle, - a charging device of the electrical energy storage device, the charging device being adapted to transform all or part of the kinetic energy generated by the combustion engine into electricity, the system being characterized in that it comprises at least one electrical energy exchange device which is adapted to export the electrical energy out of the associated vehicle, from said storage device, to an electrical network or other electrical energy storage device .

The system according to the invention makes it possible to enhance the kinetic energy produced by the vehicle engine by storing it for later export.

According to another characteristic, the electrical energy exchange device is adapted to import electrical energy from a source external to the vehicle, to the storage device of the vehicle.

This characteristic allows the exchange of electrical energy between two vehicles for example.

According to a preferred embodiment, the electrical energy storage device comprises at least one electric storage battery.

In addition, the charging device comprises an alternator which converts the kinetic energy of the combustion engine into electrical energy, to supply the storage device.

According to an alternative embodiment, the loading device comprises a device for recovering kinetic energy generated by the braking of the vehicle.

According to another characteristic, the vehicle is equipped with a warning light which is visible from outside the vehicle to inform a third party on the status of electric power applicant or electric power supplier of said vehicle.

This feature promotes the exchange of electrical energy between an applicant and a supplier.

According to an exemplary embodiment of the invention, the system comprises at least a first vehicle and a second vehicle with a combustion engine, each vehicle comprising a device for storing electrical energy, a charging device for the energy storage device. electrical, and an electric energy exchange device, the first vehicle and the second vehicle being designed to exchange energy with each other by means of their electrical energy exchange device.

In addition, the system is associated with a management system comprising a software application that is implemented at least by a first terminal associated with a first user of the first vehicle and by a second terminal associated with a second user of the second vehicle, the management system being designed to connect the first user and the second user and to implement an operation of exchange of electrical energy.

Also, the management system is adapted to control the associated exchange device to allow the user of the associated vehicle to selectively control the export or import of electrical power.

In addition, the software application is designed to memorize the electrical energy transfers between the first user and the second user. Other features and advantages of the invention will appear on reading the detailed description which follows for the understanding of which reference will be made to the accompanying drawings in which: - Figure 1 is a schematic side view which illustrates a distribution system of energy which comprises a motor vehicle exporting electrical energy to a building, according to the invention; FIG. 2 is a diagrammatic view from above which illustrates the energy distribution system of FIG. 1 which comprises two vehicles exchanging electrical energy with each other.

In all of these figures, identical or similar references represent identical or similar organs or sets of members.

FIG. 1 shows an electric power distribution system 10 comprising a first vehicle 12a and a second vehicle 12b each of which is driven by a combustion engine (not shown).

The first vehicle 12a is similar to the second vehicle 12b, the second vehicle 12b will not be described in detail so as not to unnecessarily burden the description.

Also, to facilitate the understanding of the description, the identical elements relating to the first vehicle 12a and the second vehicle 12b are identified by the same reference numerals distinguished by the letter "a" or "b" respectively.

The vehicle 12a is equipped with a storage device 14a of the electrical energy and a loading device 16a with electrical energy of the storage device 14a.

According to a preferred embodiment, the storage device 14a is an electric storage battery which is arranged in a rear part of the vehicle 12a, for example in the trunk 18a of the vehicle 12a.

The vehicle 12a also includes a "conventional" battery (not shown), in addition to the storage device 14a, which generally equips any motor vehicle and is dedicated to powering vehicle accessories such as windshield wipers or the starter in electricity.

The charging device 16a is adapted to transform all or part of the kinetic energy generated by the combustion engine of the vehicle 12a into electricity.

The expression "kinetic energy generated by the motor" is understood to mean both the kinetic or mechanical energy generated directly by the motor, that is to say at the output of the motor shaft for example, or the kinetic energy of the vehicle generated indirectly by the engine, that is to say by the movement of the elements driven by the engine. For this purpose, the loading device 16a is coupled to the output shaft of the combustion engine by a drive belt, for example.

The charging device 16a is here a synchronous machine which produces an alternating current, this alternating current being transformed into direct current by means of an inverter for example, to supply the charging device 16a.

Advantageously, the system 10 according to the invention uses the alternator which equips the vehicle 12a, to fulfill the function of loading device 16a. Thus, the alternator can charge the so-called "conventional" battery and the storage device 14a of the system 10 according to the invention.

However, without limitation, the distribution system 10 may include an alternator dedicated to the "conventional" battery and a charging device 16a which is dedicated to the storage device 14a.

According to an alternative embodiment of the invention, the loading device 16a comprises a kinetic energy recovery device generated by the braking of the associated vehicle 12a.

This type of kinetic energy recovery device recovers a portion of the kinetic energy generated by braking instead of dispersing it in the form of heat. This type of kinetic energy recovery device is in particular known from the field of formula 1.

Also, without limitation, the loading device 16a can be adapted to recover the kinetic energy directly on the wheels of the vehicle 12a, or on a member mechanically coupled to the vehicle wheels 12a.

As can be seen in Figure 1, the charging device 16a is electrically connected to the storage device 14a in electrical energy by a cable 19 to charge the storage device 14a.

Also, the distribution system 10 according to the invention comprises a motor management module 21a which controls and controls the loading device 16a, the engine management module 21a being adapted in particular to regulate the output voltage of the charging device 16a.

The engine management module 21a also selectively supplies electricity to the "conventional" battery of the vehicle 12a mentioned above or, when the "conventional" battery is charged, the energy storage device 14a of the vehicle 12a.

In addition, the system 10 includes an electric energy exchange device 20a which is adapted to export the electrical energy stored in the storage device 14a out of the vehicle 12a, to an electrical network 22 or another storage device 14b electrical energy for example.

According to a first exemplary embodiment illustrated in FIG. 1, the exchange device 20a is an induction exchange device which comprises an onboard conductor 24a arranged below the vehicle 12a and a static conductor 26a arranged in the ground 28 below. of the vehicle 12a, the onboard conductor 24a and the static conductor 26a being adapted to exchange electrical energy by induction.

Advantageously, the static conductor 26a can be arranged above the ground 28 so as to reduce the distance between the onboard conductor 24a and the static conductor 26a of the exchange device 20a by induction, to improve its operation.

According to the example illustrated in FIG. 1, the exchange device 20a is connected to the electricity network 22 which is a home network of a dwelling comprising an electric energy storage unit 23.

This electrical energy storage unit 23 is adapted to provide electricity to the dwelling, for example. By way of non-limiting example, the exchange device 20a can also be connected to an electrical network of an enterprise, or to the power grid of an energy operator, or any other electrical network.

Similarly, the network on which the exchange device 20a is connected does not necessarily include an electric energy storage unit 23, the exchange device 20a can directly feed the network, including a home network of a home , according to his needs.

Also, the exchange device 20a of electrical energy is adapted to import electrical energy from a source outside the vehicle 12a, to the storage device 14a of the vehicle 12a. For this purpose, the on-board conductor 24a and the static conductor 26a of the induction exchange device 20a are each adapted to operate as transmitters and receivers for exchanging electrical energy towards each other.

According to a second exemplary embodiment illustrated in FIG. 2, the exchange device 20a is a wired device which comprises a first connection box 30a and a wire 32a which is adapted to be connected to an exchange device 20b belonging to the second vehicle 12b, or on a complementary socket (not shown) of the electrical network 22.

According to this second exemplary embodiment, the distribution system 10 allows the first vehicle 12a to supply the second vehicle 12b with electricity, or vice versa.

The second vehicle 12b is similar to the first vehicle 12a and comprises a storage device 14b which cooperates with a loading device 16b and a motor management module 21b.

Also, the exchange device 20b of the second vehicle 12b includes a second connection box 30b which is connected to the first connection box 30a via the wire 32a.

Each connection box 30a, 30b is designed to allow the exchange of electrical energy between the storage device 14a of the first vehicle 12a and the storage device 14b of the second vehicle 12b.

According to a third embodiment not shown, the exchange device 20a of the first vehicle is an induction exchange device which is adapted to "change the electrical energy with a complementary exchange device 20b belonging to the second vehicle 12b .

According to this third embodiment, each exchange device 20a, 20b comprises a transmission module arranged at the front of the vehicle 12a, 12b associated and a transmission module arranged at the rear of the vehicle 12a, 12b associated to allow a exchange of electrical energy between the two vehicles 12a, 12b when parked one in front of the other. Without limitation, the transmission modules of each exchange device 20a, 20b can be arranged on the sides of the vehicle 12a, 12b associated to allow an exchange of electrical energy between the two vehicles 12a, 12b when parked one next to the other.

In a complementary manner, the distribution system 10 is associated with a management system (not shown) comprising a software application that is implemented at least by a first terminal 34a associated with a first user of the first vehicle 12a and by a second terminal 34b associated with a second user of the second vehicle 12b, the management system being designed to connect the users to implement an operation of exchange of electrical energy.

Also, the management system is designed to connect a first user with an energy supplier who wishes to buy energy.

Each terminal 34a, 34b constitutes a human-machine interface that allows its user to control the management system. Each terminal 34a is for example a mobile terminal, such as a smartphone, or a touch screen terminal which is mounted on the dashboard of the vehicle 12a, 12b associated.

The management system allows in particular to control the exchange device 20a, 20b associated to allow the user of the vehicle 12a, 12b associated to selectively control the export or import of electrical energy.

In addition, the software application of the management system is designed to memorize the transfers of electrical energy between the first user and the second user.

Also, the software application is adapted to perform accounting of electrical energy exchanges between two parties to allow the sale or purchase of electrical energy.

According to another aspect of the invention, each vehicle 12a, 12b comprises a warning light 36a, 36b which is visible from outside the vehicle 12a, 12b to inform a third party about the status of electric power applicant or supplier. electrical energy of the vehicle 12a, 12b associated.

The present description of the invention is given by way of non-limiting example.

Claims (5)

An electric power distribution system (10) comprising a first combustion engine vehicle (12a) having a first electrical energy storage device (14a), a first charging device (16a) of the first charging device storage (14a) of electrical energy, and a first exchange device (20a) of electrical energy, characterized in that it comprises at least a second vehicle (12b) with combustion engine, comprising a second storage device (14b) electrical energy, a second charging device (16b) of the second electric energy storage device (14b), and a second electric energy exchange device (20b), the first vehicle (12a). and the second vehicle (12b) being adapted to exchange energy with each other by means of their electric energy exchange device (20a, 20b); and in that the power distribution system (10) is associated with a management system comprising a software application that is implemented at least by a first terminal (34a) associated with a first user of the first vehicle (12a) and by a second terminal (34b) associated with a second user of the second vehicle (12b), the management system being adapted to connect the first user and the second user and to implement an exchange operation of the electric energy. 2. System (10) for distributing electrical energy according to claim 1, characterized in that the management system is adapted to control the exchange device (20a, 20b) associated to allow the user of the vehicle (12a , 12b) to selectively control the export or import of electrical energy. 3. System (10) for distributing electrical energy according to any one of claims 1 or 2, characterized in that the software application is designed to store the transfer of electrical energy between the first user and the second user. 4. System (10) for distributing electrical energy according to any one of claims 1 to 3, characterized in that the loading device (16a, 16b) comprises a kinetic energy recovery device generated by the braking of the vehicle. 5. System (10) for distributing electrical energy according to any one of the preceding claims, characterized in that the vehicle (12a, 12b) is equipped with a warning light (36a) which is visible from outside the vehicle for informing a third party of the status of electric power applicant or electric energy supplier of said vehicle.