Electrical supply system for a motor vehicle, and corresponding electronic control module

• US 10,214,165 B2
• Filed: 11/16/2015
• Issued: 02/26/2019
• Est. Priority Date: 11/18/2014
• Status: Active Grant

• Current Assignee: Valeo Equipements Electriques Moteur (Valeo SE)
• Original Assignee: Valeo Equipements Electriques Moteur (Valeo SE)
• Inventors: Chassard, Pierre
• Primary Examiner(s): Nguyen, Matthew
• Application Number:
  US15/594,225
• Publication Number:
  US 20170259763A1
• Time in Patent Office: 1,198 Days
• CPC Class Codes: B60R 16/0231 Circuits relating to the driving or the functioning of the vehicle monitoring tyres B60C23/00; indicating overspeed B60K31/00; for dash boards B60K37/00, B60Q3/10; for indicating emergencies B60Q1/52; brake control systems B60T; registering or indicating the working of vehicles G07C5/00; measuring distance G01C, e.g. combinations of speed and distance G01C23/00; engine indicators G01L; measuring speed or acceleration G01P
• CPC Class Codes: B60R 16/03 for supply of electrical power to vehicle subsystems or for circuit arrangements for charging batteries H02J7/00
• CPC Class Codes: F02N 11/0866 comprising several power sources, e.g. battery and capacitor or two batteries
• CPC Class Codes: F02N 2011/0888 DC/DC converters
• CPC Class Codes: F02N 2011/0896 Inverters for electric machines, e.g. starter-generators
• CPC Class Codes: H02J 1/082 Plural DC voltage, e.g. DC supply voltage with at least two different DC voltage levels
• CPC Class Codes: H02J 7/34 Parallel operation in networks using both storage and other dc sources, e.g. providing buffering H02J7/14 takes precedence
• CPC Class Codes: H04B 1/1607 Supply circuits converters H02M; filters therefor H02M1/14; voltage stabilisers G05F1/46

Abstract

The electrical supply system according to the invention is of the type comprising, on the one hand, an electrical power network having a first voltage electrically connecting first items of equipment comprising an electrical motor/generator, an inverter/rectifier and a first electrical energy store, and, on the other hand, an electrical service network having a second voltage that is less than the first voltage electrically connecting second items of equipment comprising a second electrical energy store, an electronic control unit controlling the energy transfers between the power network and the service network by means of at least one reversible DC/DC converter The electronic unit comprises a first electronic module supplied by the power network exchanging information with the first items of equipment, and a second electronic module supplied by the service network exchanging information with the second items of equipment and electrically insulated from the first module.

Claims

1. An electrical supply system for a motor vehicle, comprising:

an electric power network (1) with a first nominal voltage (V1) which connects electrically first items of equipment comprising an electric motor/generator (3), an inverter/rectifier (4), and a first electrical energy storage unit (2); and

an electric service network (5) with a second nominal voltage (V2) lower than said first nominal voltage (V1), which connects electrically second items of equipment comprising a second electrical energy storage unit (6), an electronic control unit (10) which controls transfers of energy between said power network (1) and said service network (5), by a reversible DC/DC converter (7), wherein said electronic control unit (10) comprises a first electronic module (11) supplied by said power network (1), which module exchanges information (13, 15) with said first items of equipment, and a second electronic module (12) supplied by said service network (5), which module exchanges said information (13, 15) with said second items of equipment, and is insulated electrically against said first module (11).

2. The electrical supply system according to claim 1, wherein said first module (11) and said second module (12) exchange said information (13, 15) on an electrically insulated communication channel (16).

3. The electrical supply system according to claim 2, wherein said communication channel (16) is two-way.

4. The electrical supply system according claim 3, wherein said communication channel (16) is an optical communication channel.

5. The electrical supply system according to claim 3, wherein said first nominal voltage (V1) is substantially 48 V, and said second nominal voltage (V2) is substantially 12 V.

6. An electronic control unit (10) which can be integrated in an electrical supply system for a motor vehicle according to claim 3, comprising a first electronic module (11) which is designed to be supplied with a first nominal voltage (V1) formed on a first flat substrate (18), and a second electronic module (12) which is designed to be supplied with a second nominal voltage (V2) lower than said first nominal voltage (V1), formed on a second flat substrate (19) which is insulated electrically against said first substrate (18).

7. The electrical supply system according to claim 2, wherein said communication channel (16) is an optical communication channel.

8. The electrical supply system according to claim 7, wherein said first nominal voltage (V1) is substantially 48 V, and said second nominal voltage (V2) is substantially 12 V.

9. An electronic control unit (10) which can be integrated in an electrical supply system for a motor vehicle according to claim 7, comprising said first electronic module (11) designed to be supplied with said first nominal voltage (V1) formed on a first flat substrate (18), and said second electronic module (12) designed to be supplied with said second nominal voltage (V2) lower than said first nominal voltage (V1), formed on a second flat substrate (19) insulated electrically against said first substrate (18).

10. The electrical supply system according to claim 2, wherein said first nominal voltage (V1) is substantially 48 V, and said second nominal voltage (V2) is substantially 12 V.

11. An electronic control unit (10) which can be integrated in an electrical supply system for a motor vehicle according to claim 2, comprising said first electronic module (11) designed to be supplied with said first nominal voltage (V1) formed on a first flat substrate (18), and said second electronic module (12) designed to be supplied with said second nominal voltage (V2) lower than said first nominal voltage (V1), formed on a second flat substrate (19) insulated electrically against said first substrate (18).

12. The electrical supply system according to claim 1, wherein said first nominal voltage (V1) is substantially 48 V, and said second nominal voltage (V2) is substantially 12 V.

13. An electronic control unit (10) which can be integrated in an electrical supply system for a motor vehicle according to claim 12, comprising said first electronic module (11) designed to be supplied with said first nominal voltage (V1) formed on a first flat substrate (18), and said second electronic module (12) designed to be supplied with said second nominal voltage (V2) lower than said first nominal voltage (V1), formed on a second flat substrate (19) insulated electrically against said first substrate (18).

14. An electronic control unit (10) which can be integrated in an electrical supply system for a motor vehicle according to claim 1, comprising said first electronic module (11) designed to be supplied with said first nominal voltage (V1) formed on a first flat substrate (18), and said second electronic module (12) designed to be supplied with said second nominal voltage (V2) lower than said first nominal voltage (V1), formed on a second flat substrate (19) insulated electrically against said first substrate (18).

15. The electronic control unit (10) according to claim 14, wherein said first substrate (18) is arranged opposite and parallel to said second substrate (19), and is separated by an intermediate layer (20) formed by an electrically insulating material.

16. The electronic control unit according to claim 15, wherein at least one first light-emitting diode (21) and at least one first photoreceptor (26) are added onto said first substrate (18) opposite openings (22, 25) in said intermediate layer (20) , corresponding respectively to at least one second photoreceptor (23) and at least one second light-emitting diode (24) added onto said second substrate (19).

17. The electronic control unit (10) according to claim 15, wherein at least one first light-emitting diode (21) and at least one first photoreceptor (26) are integrated in said first substrate (18) opposite openings (22, 25) in said intermediate layer (20), corresponding respectively to at least one second photoreceptor (23) and at least one second light-emitting diode (24) integrated in said second substrate (19).