Electronic component intended to be placed on vehicle and assembly comprising same

Abstract

An electronic component (1) intended to be placed on board a vehicle and an assembly comprising the same, the electronic component comprising: a first electronic board (30) carrying at least one voltage converter (12) implementing an electronic switch controlled by at least one control unit, the utility model relates to a control device (10) for a motor vehicle, comprising a first electronic board (30), at least one control unit capable of exchanging control signals with a remote control unit via a control connector (35), and a second electronic board (33) carrying a filtering stage (37) applied to a power signal, in particular conducting an AC current, connected to the first electronic board (30), characterized in that the filtering stage (37) is connected to the first electronic board (30). The second electronic board (33) defines a path (38) for a control signal between the control connector (35) and the first electronic board (30).

Description

Technical Field

[0001] The utility model relates to an electronic component intended to be placed on a vehicle. Background Art

[0002] Exemplarily, the electronic component involved in the utility model is integrated into an assembly for supplying electric power to a vehicle electric energy storage unit (also referred to as a "charger" for the electric energy storage unit). The electric energy storage unit is, for example, a battery, and the nominal voltage of the battery may be greater than 60V, for example, greater than or equal to 300V, 400V, 800V or even 1000V. In a known example, the assembly includes:

[0003] an inverter / rectifier that receives an AC voltage at an input and supplies a DC voltage at an output, and

[0004] A DC-DC converter is arranged downstream of the inverter / rectifier and connected to the electrical energy storage unit.

[0005] The assembly comprises an electronic board carrying at least one voltage converter implementing an electronic switch controlled by a control unit receiving a control signal. It is known practice to mount a control connector on the electronic board that mates with an external connector in order to direct the control signal as far as a control unit arranged on the board in order to control the electronic switch. This configuration makes it necessary to mount the control connector on the electronic board carrying the electronic switch and reduces the possibility of mounting the board in an external environment. This configuration can also reduce the possibility of routing power signals intended for the converter through the electronic board (areas of the electronic board that must be dedicated to the control connector and to routing the control signals).

[0006] It is necessary to remedy the above shortcomings. Utility Model Content

[0007] The purpose of the present invention is to solve the above-mentioned need, and according to one aspect of the present invention, the present invention solves this need using an electronic component intended to be placed on a vehicle, the component comprising:

[0008] a first electronic board carrying at least one voltage converter implementing an electronic switch controlled by at least one control unit capable of exchanging control signals with a remote control unit via a control connector, and

[0009] a second electronic board carrying a filtering stage applied to the power signal, in particular conducting an AC current, and a control connector, the second electronic board being connected to the first electronic board,

[0010] The second electronic board defines a path for the control signal between the control connector and the first electronic board.

[0011] The utility model makes it possible to move the connection for the control signal outside the electronic board carrying the voltage converter. Due to this movement, it is necessary to route the control signal far to one or more control units of the switch for the voltage converter, this routing is completed by another board carrying a filter stage for the power signal, which is then processed by the voltage converter. Therefore, the utility model makes it possible to reduce the volume associated with the installation of the first electronic board, because it is no longer necessary to provide space for the control connector associated with the board. Therefore, the possibility for installing the first electronic board is increased. In addition, since there is no control connector on the first electronic board, space can be freed up on the first electronic board for other functions.

[0012] The control signal can be guided between the control connector and the first electronic board only via the second electronic board. In other words, then there is no other path for the control signal between the control connector and the first electronic board except the path using the second electronic board.

[0013] The control connector may be fixed to an edge of the second electronic board. The control connector may be fixed, for example, by soldering, in particular wave soldering. The control connector may be connected to an external connector connected to a different control unit, such as an electronic control unit (ECU) of the vehicle or an external control unit connected via a socket of the vehicle.

[0014] The first electronic board and the second electronic board may be arranged next to each other. This next arrangement of the two electronic boards may include an overlap of the two electronic boards over a few millimeters. As a variant, there is no overlap, the first board and the second electronic board extend in planes parallel from one board to the other, with no overlap in a direction perpendicular to these planes.

[0015] Whether or not there is an overlap, the first board and the second electronic board may extend in parallel planes from one electronic board to the other.

[0016] The edge carrying the control connector is, for example, the edge of the second electronic board opposite to the edge of the second electronic board closest to the first electronic board.

[0017] The first electronic board may define a path for the control signal as far as the control unit, the path of the control signal through the second electronic board and the path of the control signal through the first electronic board being connected in particular via an interconnector, for example, the interconnector realizing a male connector carried by one of the boards, which male connector is plugged into a female connector carried by the other board.

[0018] Where applicable, the control signal may include, for example, at least one of the following data: a temperature measurement, a current measurement, a voltage set point, an alignment signal, a KLR30, or a CAN signal.

[0019] The control unit carried by the first electronic board can itself exchange information with a module (also called a driver) carried by the first electronic board, which controls all or some of the electronic switches. As a variant, the electronic switches can be controlled directly by the control unit.

[0020] The path of the control signal through the first board can be formed by the electrical traces of the first board, and the electrical traces of the first board are particularly arranged on the end surface of the first board, and the path of the control signal through the second board can be formed by the electrical traces of the second board, and the electrical traces of the second board are particularly arranged on the end surface of the second board.

[0021] The path of the power signal through the first board can be formed by the electrical traces of the first board, which are especially arranged on the end surface of the first board, and the path of the power signal through the second board can be formed by the electrical traces of the second board, which are especially arranged on the end surface of the second board. The two power paths can be connected by an interconnector or by a screw connection, for example, to realize a busbar.

[0022] Throughout the foregoing text, the electronic switches may be MOSFETs or IGBTs. These electronic switches are, for example, connected in pairs in series in order to define switching branches.

[0023] These electronic switches may define a single voltage converter, such as an inverter / rectifier or a DC-DC converter. As a variant, the first electronic board carries:

[0024] defines the first set of electronic switches of the inverter / rectifier, and

[0025] Defines the second set of electronic switches of the DC-DC converter.

[0026] In this variant, the control signal may be associated with only one of the two converters, or with both converters.

[0027] Throughout the foregoing text, the path of the control signal through the second electronic board can be formed in an area of ​​the second electronic board located on the border of the second board. Limiting the area of ​​the second electronic board dedicated to the path of the control signal to the border of the second electronic board can make it possible to leave as much space as possible for the power signal to be processed by the second electronic board.

[0028] The path of the control signal through the second electronic board can be formed in a region of the second electronic board delimited by an electromagnetic shield. The shield makes it possible to avoid contamination of the control signal by the power signal, which is also routed via the second electronic board.

[0029] The electromagnetic shielding portion can be provided by a metal wall, in particular made of aluminum, cooperating with the second electronic board. The wall can be carried by a wall of a housing surrounding all or part of the electronic components, which wall abuts the second electronic board after the electronic components are assembled. For example, the wall is arranged on one side of the electronic board. As a variant or combination, the electromagnetic shielding portion can be provided by lugs elastically preloaded on the second board. These lugs are elastically preloaded, for example, by a cover of the housing. These sections can be arranged on a side of the second electronic board opposite to the side on which the wall is arranged.

[0030] The area of ​​the second electronic board delimited by the electromagnetic shield may represent between 5% and 15% of the surface area of ​​the second electronic board.

[0031] Throughout the foregoing context, a power signal may direct an AC current, and a filtering stage may filter a common mode current and / or filter a differential current of the AC current.

[0032] As a variant, throughout the preceding text, the power signal may conduct a DC current and the filtering stage may filter noise in this signal.

[0033] The converter of the first electronic board is, for example, an inverter / rectifier or a DC-DC converter.

[0034] The second electronic board may not carry a voltage converter.

[0035] The first electronic board may be monolithic, that is to say it comprises a single PCB carrying the voltage converter. As a variant, the first electronic board may be formed by assembling several electronic daughter boards.

[0036] The second electronic board may be monolithic or formed by assembling several electronic daughter boards.

[0037] According to another of its aspects, another subject of the invention is an assembly for supplying electric power to a vehicle electrical energy storage unit, the assembly comprising an electronic component as defined above.

[0038] The assembly may comprise the inverter / rectifier and the DC-DC converter in the same housing or not. The DC-DC converter has, for example, galvanic isolation, in particular via a transformer, such as a three-phase transformer.

[0039] The electrical energy storage unit is, for example, a battery which may have one of the abovementioned nominal tensions. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The present invention may be better understood by reading the following description of non-limiting examples of embodiments of the present invention:

[0041] Figure 1 schematically depicts some electronic circuits of components for supplying electrical power to a vehicle electrical energy storage unit,

[0042] Figure 2 Schematically depicts Figure 1 Some electronic components, and

[0043] Figure 3 Schematically depicts Figure 2 A variation of the electronic components depicted in . DETAILED DESCRIPTION

[0044] Figure 1 Some electronic circuits 10 of an assembly for supplying electrical power to a vehicle electrical energy storage unit are depicted. This assembly is also referred to as a "charger". Electrical energy storage unit (the figure ( Figure 1 ) is not depicted in the figure, for example, a battery, the nominal voltage of which may be greater than 60V, for example greater than or equal to 300V, 400V, 800V or even 1000V.

[0045] In the example considered, the circuit 10 receives at the input an AC voltage from a network (not depicted), which in this case is three-phase. An inverter / rectifier is arranged upstream of a DC bus 11, which makes it possible to convert this AC voltage into a DC voltage and, where applicable, also implements a function of power factor correction. Downstream of this DC bus, an isolated DC-DC converter 12 is arranged, starting from the electrical network. This converter 12 comprises, in a known manner, an inverter 14, a three-phase transformer 15 and a rectifier 16, which supplies a DC voltage insulated from the electrical network. As Figure 1 As can be seen, the three-phase transformer 15 is connected to both the rectifier 16 and the inverter 14 through the inductor frame 17 and the capacitor frame 18, thereby defining a CLLLC structure. Of course, other structures are possible, such as LLC, CLLC, LC or other CL structures.

[0046] like Figure 1 It can be seen that each phase has a primary winding 20 and a secondary winding 21 that are inductively coupled to each other, and the primary winding 20 is star-connected and the secondary winding 21 is also star-connected.

[0047] In this case, the converter 12 or inverter / rectifier ( Figure 1 not depicted) by Figure 2 and Figure 31 and 2. The electronic components 1 are visible in the figure. The first electronic board 30 carries, for example, controllable switches 32, such as MOSFETs or IGBTs, and a control unit (not depicted). The control unit receives, for example, setpoint information from a remote control unit, for example an engine control unit of the vehicle, called an ECU, which the control unit converts into instructions for the actuators of the switches. Alternatively, the control unit can also send information, such as temperature or current measurements or CAN signals, to the remote control unit, for example.

[0048] In addition to the first electronic board 30, the electronic component 1 also comprises a second electronic board 33, which in this case is arranged next to the first electronic board 30, such as Figure 2 and Figure 3 Depicted. Figure 2 and Figure 3 It is observed that there is a slight overlap between these electronic boards 30 and 33.

[0049] This second electronic board 33 has two connectors 34 and 36 and a bushing 35 of a cooling circuit, through which water flows, on the same side opposite to the side facing the first electronic board 30. The connector 34 is a control connector, which can be connected to an external control connector 39 connected to the aforementioned remote control unit. The power connector 36 is, according to the application, a DC connector or an AC connector, for example, single-phase or three-phase.

[0050] It can be seen that in the depicted example, the second electronic board 33 carries a filtering stage 37 for the power signal, which in this case is a three-phase AC voltage. In this case, this filtering stage 37 consists of capacitors and inductors in order to filter the common mode current and to filter the differential current.

[0051] According to the present invention, the path taken by the control signal between the control connector 34 and the control unit is defined not only at the level of the first electronic board 30 , but also at the level of the second electronic board 33 .

[0052] To this end, one or more electrical tracks of the second electronic board 33 are dedicated to control signals defining said paths 38 through the second electronic board 33 and communicate with tracks of the first electronic board 30 connected to the control unit. In the example depicted, the control signals move from the first electronic board 30 to the second electronic board 33 and vice versa via an interconnector 31, for example formed by a male connector carried by one of the boards 30, 33 and plugged into a female connector carried by the other board 30, 33.

[0053] exist Figure 2 and Figure 33, the path 38 of the control signal through the second electronic board 33 is formed in a region 41 of the second electronic board 33 situated on the border of the second electronic board 33. This region 41 occupies, for example, a surface area between 5% and 15% of the surface area of ​​the second electronic board 33, for example 10% of this surface area.

[0054] like Figure 3 It can be seen that the area 41 can be defined by an electromagnetic shielding portion 42. The electromagnetic shielding portion 42 is provided, for example, by:

[0055] a metal wall, in particular made of aluminum, cooperating with the second electronic board and extending from the wall of the housing surrounding the component 1 over one side of the second electronic board, and

[0056] The sections on the second plate are elastically preloaded by the cover of the housing, said sections being arranged on the side of the plate opposite to the side on which the wall is arranged.

[0057] The present invention is not limited to what has just been described.

[0058] In one variation, the power signal may conduct a DC current and the filtering stage may filter noise present in this DC signal.

Claims

1. An electronic component (1) intended to be placed on a vehicle, the electronic component comprising: a first electronic board (30) carrying at least one voltage converter (12) implementing an electronic switch (32) controlled by at least one control unit capable of exchanging control signals with a remote control unit via a control connector (34), and a second electronic board (33) carrying a filtering stage (37) applied to the power signal, in particular conducting an AC current, connected to the first electronic board (30), Characterized in that the second electronic board (33) defines a path (38) for the control signal between the control connector (34) and the first electronic board (30).

2. The electronic component intended to be placed on a vehicle according to claim 1, characterized in that The control connector (34) is fixed to the edge of the second electronic board (33).

3. An electronic component intended to be placed on a vehicle according to claim 1 or 2, characterised in that The first electronic board (30) and the second electronic board (33) are arranged next to each other.

4. The electronic component intended to be placed on a vehicle according to claim 3, characterized in that The first electronic board (30) defines a path for the control signal as far as the control unit, and a path (38) for the control signal through the second electronic board (33) and a path for the control signal through the first electronic board (30) are connected through an interconnector (31).

5. An electronic component intended to be placed on a vehicle according to claim 3 or 4, characterised in that The first electronic board (30) and the second electronic board (33) extend in parallel planes from one board to the other, without overlapping in a direction perpendicular to these planes.

6. An electronic component intended to be placed on a vehicle according to any one of the preceding claims, characterised in that The path (38) of the control signal through the second electronic board (33) is formed in a region (41) of the second electronic board (33) located on the boundary of the second electronic board (33).

7. An electronic component intended to be placed on a vehicle according to any one of the preceding claims, characterised in that The path (38) of the control signal through the second electronic board (33) is formed in a region (41) of the second electronic board which is bounded by an electromagnetic shield (42).

8. The electronic component intended to be placed on a vehicle according to claim 7, characterized in that The electromagnetic shielding (42) is provided by a metal wall made of aluminum cooperating with the second electronic board (33) and / or by a tab elastically preloaded on the second electronic board (33).

9. An electronic component intended to be placed on a vehicle according to claim 7 or 8, characterised in that The area (41) of the second electronic board (33) delimited by the electromagnetic shield (42) represents between 5% and 15% of the surface area of ​​the second electronic board (33).

10. An electronic component intended to be placed on a vehicle according to any one of the preceding claims, characterised in that The control signal is conducted between the control connector (34) and the first electronic board (30) only via the second electronic board (33).

11. An electronic component intended to be placed on a vehicle according to any one of the preceding claims, characterised in that The power signal conducts an AC current and the filtering stage (37) filters the common mode current and / or filters the differential current of the power signal.

12. An electronic component intended to be placed on a vehicle according to any one of the preceding claims, characterised in that The converter of the first electronic board (30) is an inverter / rectifier or a DC-DC converter.

13. An electronic component intended to be placed on a vehicle according to any one of the preceding claims, characterised in that The second electronic board (33) does not carry a voltage converter.

14. An electronic component intended to be placed on a vehicle according to any one of the preceding claims, characterised in that The first electronic board (30) is monolithic and / or the second electronic board (33) is monolithic.

15. An assembly for supplying electric power to a vehicle electrical energy storage unit, characterized in that The assembly comprises an electronic component intended to be placed on a vehicle according to any one of the preceding claims.

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