Electrical equipment
By positioning electronic components parallel to the board and using a retaining member to press them against the heat sink, the assembly complexity and size issues of existing electrical equipment are addressed, enabling easier and more compact installations.
Patent Information
- Application Number
- FR2022013753
- Authority / Receiving Office
- FR · FR
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2022-12-19
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2042-12-19
AI Technical Summary
Existing electrical equipment arrangements with electronic components orthogonally positioned on heat sinks complicate assembly and have a large vertical footprint, making access to the electronic board difficult and increasing the overall size of the equipment.
The electrical equipment is designed with electronic components soldered parallel to the board, using a retaining member with a support element that presses the components against a heat sink orthogonally, facilitated by a retaining element that is fixed to the heat sink and supported by the board, allowing for simplified assembly and reduced overall size.
This configuration simplifies assembly by reducing the risk of damaging components during installation and minimizes the equipment's size, while maintaining effective thermal connection between components and the heat sink.
Smart Images
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Abstract
Description
Title of the invention: Electrical equipment
[0001] The present invention relates to the field of electrical equipment, in particular for vehicles, for example for electric or hybrid vehicles, and relates more particularly to electrical equipment, in particular an electric charger, a voltage converter, or an inverter.
[0002] The invention aims in particular to simplify the assembly of electrical equipment.
[0003] An electrical device, particularly one configured for installation in a vehicle, for example an electric or hybrid vehicle, is already known in the art, comprising an electronic board and a heat sink. The heat sink serves to dissipate the heat emitted by an electronic component soldered onto the electronic board. The electronic component is positioned orthogonally to the electronic board and is pressed against the heat sink.
[0004] However, such an arrangement complicates assembly, since access to the electronic board on the heat sink side is not always easy. Furthermore, the vertical footprint of such an arrangement—relative to the electronic board—is relatively large.
[0005] The invention aims in particular to obtain an electrical equipment with limited space allowing simple assembly in order to thermally connect the electronic component and the heat sink.
[0006] To this end, the invention relates to electrical equipment, comprising: - an electronic card, - an electronic component, the electronic component being soldered onto the electronic board and positioned parallel to the electronic board, - a heat sink, which is configured to dissipate the heat emitted by the electronic component, - a retaining member, which carries a support element, the support element pressing on the electronic component in a direction orthogonal to the electronic board and in a direction of distance of the electronic component relative to the electronic board, the support element being configured to press the electronic component on the heat sink.
[0007] Thus, due to the arrangement of the electronic component parallel to the electronic board, the overall size of the electrical equipment is limited. Furthermore, thanks to this arrangement, and due to the support provided by the retaining element on the electronic component, the electronic component is easily pressed against the heat sink in a direction orthogonal to the electronic board. The assembly that thermally connects the electronic component- The electronics and the heat sink are thus made in a simple way.
[0008] Depending on other optional features of the electrical equipment, sockets alone or in combination:
[0009] - The electronic component is a transistor or a diode.
[0010] - The electronic component comprises a plurality of pins, which are only arranged on one side of the electronic component, and are bent and soldered onto the electronic board.
[0011] - The electronic component comprises between two and five pins.
[0012] - The electronic component comprises a chip integrated into a material support plastic.
[0013] - The electronic component conforms to the TO-247F standard, JEDEC August 2022.
[0014] - The retaining element is located on one side of the electronic board opposite the face on which the electronic component is placed. Thus, assembly is facilitated, since the mounting of the retaining element can be carried out without risk of damaging the electronic component located on the other side of the electronic board.
[0015] - The retaining element is made of metal, preferably stainless steel. Thus, The retaining mechanism is robust and inexpensive.
[0016] - The retaining member has a half-crenellated shape, so that a One end of the retaining member carrying the support element is away from the electronic board, while the other end of the retaining member is supported by the electronic board. This simplifies assembly.
[0017] - The support element is a pin. Thus, the support element is made in a partially remarkably simple.
[0018] - The retaining element is fixed to the heat sink, preferably by screwing using a fixing screw. Thus, the relative positioning of the heat sink and the retaining element is facilitated, since the retaining element is fixed to the heat sink.
[0019] - The retaining element is supported by the electronic board. Thus, the position The operation of the retaining device is facilitated, because it is supported by the electronic board.
[0020] - The retaining element is screwed onto the heat sink by means of a screw The fixing screw passes through a hole in the electronic board to hold the retaining element, the electronic board, and the heat sink together. This simplifies positioning and fixing.
[0021] - The electronic card includes means for positioning the organ of The retaining device, preferably the electronic board, includes a hole for a positioning tab for the retaining element. This simplifies assembly, because the Positioning the retaining element on the electronic board is facilitated.
[0022] - The support element passes through the electronic board and presses directly on the electronic component. Assembly is thus simplified, as the mounting of the retaining element and the support can be carried out without risk of damaging the electronic component located on the other side of the circuit board. Furthermore, the resulting equipment is particularly compact.
[0023] - The support element is snapped onto the retaining member or is overmolded onto the retaining element. This makes assembly easier.
[0024] - The support element is made of thermoplastic material. Thus, the support element is done in a simple and economical way.
[0025] - The support element and the retaining member form a single piece, preferably Made of plastic and / or metal material. This makes assembly easier.
[0026] - The heat sink is made of metal, preferably aluminum-based. The use of aluminum is advantageous because of its lightness and its ability to be recycled.
[0027] - The electrical equipment includes an additional electronic component, the an additional electronic component soldered onto the circuit board and positioned parallel to the circuit board, and The retaining element incorporates an additional support element. This additional support element bears against the additional electronic component in a direction perpendicular to the circuit board and away from the circuit board. The additional support element is configured to press the additional electronic component against the heat sink. This simplifies assembly, as only one retaining element is required for both the main electronic component and the additional electronic component.
[0028] - The electronic component and the additional electronic component are identical. Thus, manufacturing is facilitated, because the number of different components is reduced.
[0029] - The support element and the additional support element are identical. Thus, the fa Construction is made easier because the number of different components is reduced.
[0030] - The retaining element is fork-shaped, a first branch of the A fork supports the bearing element, a second arm of the fork supports the additional bearing element, and one leg of the fork is supported by the electronic board. This simplifies assembly, as a single, particularly simple retaining element is used for both the electronic component and the additional electronic component, and the relative positioning of the bearing elements is simplified.
[0031] - The electrical equipment is configured to be installed in a vehicle.
[0032] - The electrical equipment is configured to be installed in a vehicle, and shape : - a DC-DC converter configured to convert voltage between a high-voltage power supply battery and a low-voltage power supply battery, and / or - an electric charger configured to convert voltage between an external electrical grid and the vehicle's power supply battery, and / or - an inverter configured to power an electric motor driving the vehicle from a power battery, the inverter being configured to convert direct current supplied by the power battery into alternating current to power the electric motor and vice versa.
[0033] - The electrical equipment forming an inverter is, for example, mounted in a A rotating electrical machine comprising a rotor and a stator. The rotating electrical machine can advantageously form an alternator, an alternator-starter, a reversible machine or an electric motor.
[0034] - Alternating current is for example a single-phase or three-phase current.
[0035] - The low voltage is between 5 and 50 Volts, preferably equal to 12 or 48 Volts.
[0036] - The high voltage is between 220 and 1500 Volts, preferably equal to 400 or 800 Volts. Brief description of the figures
[0037] The invention will be better understood upon reading the following description, given solely by way of example and made with reference to the accompanying drawings in which:
[0038] [Fig-1] is a schematic cross-sectional view of an electrical device according to a mode realization of the invention;
[0039] [Fig.2] is a schematic top perspective view of part of an electrical equipment shown in [Fig.1];
[0040] [Fig.3] is a schematic perspective view from below of part of an electrical equipment shown in [Fig.1];
[0041] [Fig.4] is a schematic perspective view from below of a part of an electrical equipment shown in [Fig.1], in which certain elements are not shown in order to make certain features of the electrical equipment visible.
[0042] [Fig.5] is a schematic perspective view of a retaining device for electrical equipment shown in [Fig.1].
[0043] In these figures, analogous elements are designated by identical references. Detailed description
[0044] The following embodiments are examples. Although the description refers to one or more embodiments, this does not necessarily mean that each reference relates to the same embodiment, or that the features apply only to a single embodiment. Simple features of different embodiments can also be combined or interchanged to provide other embodiments.
[0045] In the description, certain elements can be indexed, for example, first element or second element. In this case, it is simply an indexing to differentiate and name similar but not identical elements. This indexing does not imply any priority of one element over another, and such designations can easily be interchanged without departing from the scope of the present invention. Nor does this indexing imply any chronological order.
[0046] An electrical equipment according to an embodiment, designated by the general reference 1, is partially shown in cross-section on [Fig. 1].
[0047] The electrical equipment 1 shown in cross-section in [Fig.1] includes an electronic board 3, at least one electronic component 5a soldered onto the electronic board 3 and arranged parallel to the electronic board 3, a heat sink 7 and at least one retaining member 9a.
[0048] In this example, the electrical equipment 1 also includes at least one additional electronic component 1a soldered onto the electronic board 3 and arranged parallel to the electronic board 3. In this example, said at least one additional electronic component 1a is identical to said at least one electronic component 5a. More specifically, in this example, the electronic equipment 1 includes two additional electronic components 5a, 5b and two additional electronic components 1a, 1b, all identical and shown in particular in [Fig. 2], and two identical retaining elements 9a, 9b, which are shown in particular in [Fig. 3]. The electronic board 3 conventionally includes other electrical or electronic components, which are not shown in the figures.
[0049] The heat sink 7 is configured to dissipate the heat emitted by the electronic component 5a, 5b, and is configured to dissipate the heat emitted by the additional electronic component 1a, 11b. For example, the heat sink 7 is made of metal, preferably aluminum-based.
[0050] In this example, the electronic component 5a, 5b has a plurality of pins 13, which are arranged only on one side of the electronic component 5a, 5b, and are bent and soldered onto the electronic board 3. For example, the electronic component 5a, 5b has between two and five pins, in this example four pins 13. Furthermore, the electronic component 5a, 5b has a chip integrated into a plastic material support, and is for example compliant with the TO-247F standard, JEDEC August 2022. For example, the electronic component 5a, 5b is a transistor or a diode.
[0051] In this example, the additional electronic component 1a, 11b has a plurality of pins 13, which are arranged only on one side of the electronic component 1a, 11b, and are bent and soldered onto the electronic board 3. For example, the additional electronic component 1a, 11b has between two and five pins; in this example, four pins 13. Furthermore, the additional electronic component 1a, 11b has a chip integrated into a plastic substrate and conforms, for example, to the TO-247F standard, JEDEC August 2022. For example, the additional electronic component 1a, 11b is a transistor or a diode. Thus, in this example, the additional electronic component 1a, 11b is identical to the electronic component 5a, 5b.
[0052] For example, the set of electronic components 5a, 5b and additional electronic components 1la, 11b forms a voltage rectifier bridge to transform the alternating voltage generated by phases of a stator into a direct voltage and / or, conversely, to transform a direct voltage into an alternating voltage to power the phases of the stator.
[0053] The retaining member 9a, 9b is supported by the electronic board 3. More precisely, the retaining member 9a, 9b is disposed on a face of the electronic board 3 opposite to the face on which the electronic component 5a, 5b is disposed. Furthermore, in this example, the retaining member 9a, 9b is fixed to the heat sink 7, preferably by screwing with a fixing screw 15. Thus, in this example, the retaining member 9a, 9b is screwed onto the heat sink 7 by means of a fixing screw 15, the fixing screw 15 passing through a hole 17 in the electronic board 3, shown in [Fig.4] on which the retaining member 9a is intentionally not shown, so as to hold together the retaining member 9a, 9b, the electronic board 3 and the heat sink 7. In this example, the fixing screw 15 also passes through a hole 18 in the retaining member 9a, 9b, visible in [Fig.5].
[0054] For example, the electronic board 3 is screwed onto the heat sink 7 by means of a fixing screw 19, the fixing screw 19 passing through a hole 20 in the electronic board 3.
[0055] In this example, the electronic board 3 includes means for positioning the retaining member 9a, 9b. For example, the electronic board 3 includes a hole 21a, 21b receiving a positioning tab 23a, 23b of the retaining member 9a, 9b. More specifically, in this example, the retaining member 9a, 9b includes two tabs positioning 23a, 23b, the electronic card 3 thus comprising two holes 21a, 21b for each retaining member 9a, 9b, each hole 21a, 21b receiving a positioning tab 23a, 23b.
[0056] In this example, the retaining member 9a, 9b is made of metal, preferably stainless steel. For example, the retaining member 9a, 9b is forked. A fork generally consists of a shaft from which branches extend. A first branch 25a of the fork carries a support element 27a, a second branch 25b of the fork carries an additional support element 27b, and the shaft 29 of the fork is supported by the electronic board 3. In this example, the support element 27a and the additional support element 27b are identical and are arranged in a similar manner. Furthermore, the retaining member 9a, 9b has a half-crenellated shape. Thus, one end of the retaining member 9a, 9b carrying the support element 27a - and the additional support element 27b - is distant from the electronic board 3, the other end of the retaining member 9a, 9b being supported by the electronic board 3.
[0057] Thus, the retaining member 9a, 9b carries a support element 27a, the support element 27a bearing on the electronic component 5a, 5b in a direction orthogonal to the electronic board 3 and in a direction away from the electronic component 5a, 5b relative to the electronic board 3, as shown in [Fig. 1] by arrow A. The support element 27a is configured to press the electronic component 5a, 5b against the heat sink 7. For this purpose, the support element 27a passes through the electronic board 3, for example via a hole 31a in the electronic board, and presses directly on the electronic component 5a, 5b. In this example, the support element 27a is a pin. For example, as shown in Figure 5, the support element 27a is snapped onto the retaining member 9a, 9b. For example, the support element 27a is made of thermoplastic material. In one alternative, the support element 27a is overmolded onto the retaining member 9a, 9b.According to another variant, the support element 27a and the retaining member 9a, 9b form a single piece, preferably made of plastic and / or metallic material.
[0058] Similarly, the retaining member 9a, 9b carries an additional support element 27b, the additional support element 27b bearing on the additional electronic component 1a, 11b in a direction orthogonal to the electronic board 3 and in a direction away from the additional electronic component 1a, 11b relative to the electronic board 3. The additional support element 27b is configured to press the additional electronic component 1a, 11b against the heat sink 7. For this purpose, the additional support element 27b passes through the electronic board 3, for example via a hole 31b in the electronic board, and presses directly on the additional electronic component 1a, 11b. For example, The additional support element 27b is snapped onto the retaining member 9a, 9b. In this example, the additional support element 27b is a pin. For example, the additional support element 27b is made of thermoplastic material. In one variant, the support element 27b is overmolded onto the retaining member 9a, 9b. In another variant, the additional support element 27b and the retaining member 9a, 9b form a single piece, preferably made of plastic and / or metal.
[0059] An electrical device 1 as previously described is configured to be installed in a vehicle, and forms: - a DC-DC converter configured to convert voltage between a high-voltage power supply battery and a low-voltage power supply battery, and / or - an electric charger configured to convert voltage between an external electrical grid and the vehicle's power supply battery, and / or - an inverter configured to power an electric motor driving the vehicle from a power battery, the inverter being configured to convert direct current supplied by the power battery into alternating current to power the electric motor and vice versa.
[0060] Alternating current is, for example, single-phase or three-phase current. Low voltage is between 5 and 50 volts, preferably 12 or 48 volts. High voltage is between 220 and 1500 volts, preferably 400 or 800 volts.
[0061] For example, the electrical equipment 1 forming an inverter is mounted in a rotating electrical machine comprising a rotor and a stator. The rotating electrical machine can advantageously form an alternator, a starter-alternator, a reversible machine, or an electric motor.
[0062] The invention is not limited to the embodiments presented, and other embodiments will be obvious to those skilled in the art. In particular, it is possible to combine the embodiments and variants described above. List of references
[0063] 1: electrical equipment 3: electronic board 5a, 5b: electronic component 7: Heat sink 9a, 9b: support organ lia, 11b: additional electronic component 13: brooch 15: fixing screw 17: hole 18: hole 19: fixing screw 20: hole 21a, 21b: hole 23a, 23b: positioning tab 25a, 25b: branch 27a: support element 27b: additional support element 29: trunk 31a, 31b: hole
Claims
1.
2.
3.
4. Demands Electrical equipment (1), characterized in that it comprises: - an electronic card (3), - an electronic component (5a, 5b), the electronic component (5a, 5b) being soldered onto the electronic board (3) and arranged parallel to the electronic board (3), - an additional electronic component (lia, 11b), the additional electronic component (lia, 11b) being soldered onto the electronic board and arranged parallel to the electronic board (3) - a heat sink (7), which is configured to dissipate the heat emitted by the electronic component (5a, 5b), - a retaining member (9a, 9b), disposed on a face of the electronic board (3) opposite the face on which the electronic component (5a, 5b) and the additional electronic component (1a, 1b) are disposed, which carries a support element (27a) and an additional support element (27b), the support elements (27a, 27b) bearing on the electronic component (5a, 5b) and the additional electronic component (1a, 1b) respectively in a direction orthogonal to the electronic board (3) and in a direction away from the electronic component (5a, 5b) relative to the electronic board (3), the support element (27a) being configured to press the electronic component (5a, 5b) against the heat sink and the additional support element (27b) being configured to press the additional electronic component (1a, 1b) against the heat sink, the retaining member (9a, 9b) being in the form fork,a first arm (25a) of the fork carrying the support element, a second arm (25b) of the fork carrying the additional support element (27b), and a trunk (39) of the fork being supported by the electronic board (3). Electrical equipment (1) according to the preceding claim, wherein the electronic component (5a, 5b) is a transistor or a diode. Electrical equipment (1) according to any one of the preceding claims, wherein the retaining member (9a, 9b) is fixed to the heat sink (7), preferably by screwing with a fixing screw (15). Electrical equipment (1) according to any one of the preceding claims, wherein the retaining member (9a, 9b) is supported by the electronic board (3).
5. Electrical equipment (1) according to any one of the preceding claims, wherein the electronic board (3) includes means for positioning the retaining member (9a, 9b), preferably the electronic board (3) including a hole (21a, 21b) receiving a positioning tab (23a, 23b) of the retaining member (9a, 9b).
6. Electrical equipment (1) according to any one of the preceding claims, wherein the support element (27a) passes through the electronic board (3) and presses directly on the electronic component (5a, 5b).
7. Electrical equipment (1) according to any one of the preceding claims, configured to be carried in a vehicle, and forming: - a DC-DC converter configured to convert a voltage between a high-voltage power supply battery and a low-voltage power supply battery, and / or - an electric charger configured to convert a voltage between an electrical network outside the vehicle and a power supply battery of the vehicle, and / or - an inverter configured to supply an electric motor driving the vehicle from a power supply battery, the inverter being configured to convert DC current supplied by the power supply battery into AC current to supply the electric motor and vice versa.