CN111107733B

CN111107733B - Electrical device and motor vehicle comprising such an electrical device

Info

Publication number: CN111107733B
Application number: CN201910926175.8A
Authority: CN
Inventors: 观幸; 余水生
Original assignee: Valeo Siemens eAutomotive Shenzhen Co Ltd
Current assignee: Valeo eAutomotive Shenzhen Co Ltd
Priority date: 2019-09-27
Filing date: 2019-09-27
Publication date: 2021-04-20
Anticipated expiration: 2039-09-27
Also published as: CN111107733A

Abstract

Disclosed are an electric device and a motor vehicle including the same, the electric device including a circuit board and a heat dissipation member, the electric device further including: the annular inductance assembly is positioned between the circuit board and the heat dissipation component, a gap exists between the annular inductance assembly and the heat dissipation component, and the heat dissipation pad is arranged in the gap; the toroidal inductive assembly comprises a toroidal core and a coil wound on the toroidal core, the toroidal inductive assembly comprising a first region facing the gap, wherein the toroidal core is not wound by the coil; and wherein the heat dissipation member has a first surface corresponding to the first region of the toroidal inductor assembly, the first surface being an at least partially planar surface, the heat dissipation pad filling a gap between the first region of the toroidal inductor assembly and the first surface of the heat dissipation member.

Description

Electrical device and motor vehicle comprising such an electrical device

Technical Field

The present invention relates to the field of electrical technology, and more particularly to an electrical device and a motor vehicle comprising the electrical device.

Background

With the widespread use of electrical technology in the civil and commercial sectors, there is therefore also a greater demand for electrical devices, in particular for motor vehicles.

Current electrical devices often include one or more annular inductor assemblies that generate a relatively large amount of heat during use. In order to achieve good heat dissipation of the electrical device, a heat dissipation member is generally disposed in the electrical device, a surface of the heat dissipation member facing the annular inductance assembly has an arc surface identical to an arc surface of a corresponding region of the annular inductance assembly, and a heat dissipation pad is disposed between the annular inductance assembly and the heat dissipation member and fills a gap therebetween.

However, since the toroidal inductor assembly includes a region in which the toroidal core is not wound by the coil, when heat dissipation is achieved by the above method, a gap still exists between the region in which the toroidal core is not wound by the coil and the heat dissipation pad, and good heat dissipation cannot be achieved.

Therefore, there is a need for an electrical device having a better heat dissipation effect and more excellent heat dissipation performance while achieving the functions of the electrical device.

Disclosure of Invention

In view of the above problems, the present invention provides an electrical device and a motor vehicle including the electrical device. The electric device provided by the invention can effectively improve the heat dissipation performance of the electric device on the basis of realizing the function of the electric device.

According to an aspect of the present invention, there is provided an electrical device including a circuit board and a heat dissipation member, the electrical device further including: a ring-shaped inductance assembly located between a circuit board and the heat dissipation member with a gap therebetween, a heat dissipation pad being disposed in the gap; wherein the toroidal inductive component comprises a toroidal core and a coil wound on the toroidal core, and the toroidal inductive component comprises a first region facing the gap, the toroidal core in the first region not being wound by the coil; and wherein the heat dissipation member has a first surface corresponding to a first region of the toroidal inductive assembly in which the toroidal core is not wound by a coil, the first surface being an at least partially flat surface, the heat dissipation pad filling a gap between the first region of the toroidal inductive assembly and the first surface of the heat dissipation member.

The electrical device according to the invention may further comprise one or more of the following features, alone or in combination.

In some embodiments, the electrical device further comprises a housing, and the heat dissipating member is a wall of the housing.

In some embodiments, the toroidal inductive component is mounted on the circuit board, and wherein the wall of the housing is a bottom wall of the housing.

In some embodiments, the toroidal inductive component is mounted inside the housing, and wherein the wall of the housing is a peripheral wall of the housing or an inner cavity wall of the housing.

In some embodiments, the heat dissipation member has a second surface corresponding to a coil region of the toroidal inductive component in which the toroidal core is wound by a coil, and a portion of the second surface of the heat dissipation member is an arc-shaped surface corresponding to an arc-shaped surface that the coil region of the toroidal inductive component has.

In some embodiments, the heat dissipation member includes two second surfaces adjacent to and opposite to each other with respect to a first surface of the heat dissipation member facing the first region of the annular inductor assembly, the second surfaces of the heat dissipation member facing the respective coil regions of the annular inductor assembly.

In some embodiments, the thermal pad is made of a thermally conductive and insulating material.

In some embodiments, the heat sink pad is made of a flexible compressible material and the initial thickness of the heat sink pad is greater than or equal to the distance of the gap existing between the annular inductance component and the heat dissipating member.

In some embodiments, the heat dissipation pad is a thermally conductive silicone pad.

In some embodiments, the circuit board is perpendicular to the vertical direction, and the annular inductance component overhangs the circuit board in the vertical direction.

In some embodiments, the toroidal inductance component is a common mode inductance.

In some embodiments, the electrical device forms a charging device for a vehicle, or an inverter, or a dc-dc converter.

According to another aspect of the present disclosure, a motor vehicle is proposed, which comprises an electrical device as described above.

By utilizing the electric device provided by the invention, on the basis of realizing the function of the electric device, the contact area between the heat dissipation pad and the annular inductance assembly in the electric device can be effectively increased, and the heat dissipation performance of the electric device is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts. The following drawings are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the invention.

Fig. 1 shows a partial cross-sectional view of a known electrical device 100;

FIG. 2 illustrates a partial cross-sectional view of the electrical device 100 shown in FIG. 1 after placement of a heat sink pad;

FIG. 3 illustrates a partial cross-sectional view of an electrical device 200 according to an embodiment of the present disclosure;

FIG. 4 illustrates a partial cross-sectional view of electrical device 200 after placement of a heat sink pad in accordance with an embodiment of the present disclosure;

FIG. 5 illustrates an exemplary schematic view of a heat dissipating member of electrical device 200 according to an embodiment of the present disclosure;

FIG. 6 illustrates an exemplary schematic view of a heat dissipating member of an electrical device 200 according to an embodiment of the present disclosure;

fig. 7 illustrates an exemplary schematic view of a heat dissipating member of an electrical device 200 according to an embodiment of the present disclosure.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, also belong to the scope of protection of the present invention.

As used in this application and the appended claims, the terms "a," "an," "the," and/or "the" are not intended to be inclusive in the singular, but rather are intended to be inclusive in the plural unless the context clearly dictates otherwise. In general, the terms "comprises" and "comprising" merely indicate that steps and elements are included which are explicitly identified, that the steps and elements do not form an exclusive list, and that a method or apparatus may include other steps or elements.

The terminology used herein is for the purpose of explaining embodiments, and is not intended to limit and/or define the present disclosure. It is to be understood that the terms "inner", "outer", and the like, as used herein, refer to an orientation or positional relationship as shown in the accompanying drawings, or as would normally be positioned during use of the disclosed product, or as would be conventionally understood by one skilled in the art, which is meant only to facilitate describing and simplifying the disclosure, and does not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be taken as limiting the disclosure.

Also, unless the context otherwise defines, the singular includes the plural. Throughout the specification, the terms "comprises," "comprising," "has," "having," "includes," "including," "having," "including," and the like are used herein to specify the presence of stated features, integers, steps, operations, elements, components, or groups thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or groups thereof.

In addition, even though terms including ordinal numbers such as "first", "second", etc., may be used to describe various elements, the elements are not limited by the terms, and the terms are used only to distinguish one element from another. For example, a first component could be termed a second component, and, similarly, a second component could be termed a first component, without departing from the scope of the present disclosure.

Fig. 1 shows a partial cross-sectional view of a known electrical device 100, and fig. 2 shows the electrical device 100 shown in fig. 1 with a heat sink pad.

As shown in fig. 1 and 2, the electrical device 100 includes a circuit board 110 and a housing 120, wherein the bottom of the housing serves as a heat dissipation member of the electrical device.

The circuit board 110 may, for example, provide input filter components, output filter components, etc. for the electrical device 100. It is not limited by the particular components included on the circuit board and their placement.

The bottom of the housing is intended to be characterized as a heat dissipating member, which is a member for dissipating heat from the electrical device 100, in particular for dissipating heat from an annular inductive component in the electrical device.

And wherein for example a ring-shaped inductive component 130 is arranged on the circuit board, a gap 150 being present between said ring-shaped inductive component 130 and said bottom of the housing. The thermal pad 140 is disposed in the gap to fill the gap 150.

The toroidal inductive component 130 may be, for example, a toroidal common mode inductive component, or it may be another type of inductive component. It is not limited by the particular type of toroidal inductive component and the specific function it has.

The heat sink pad 140 is intended to represent a pad for achieving heat dissipation. It is not limited by the specific formation of the thermal pad and its shape.

Wherein the toroidal inductive component 130 comprises a toroidal core 131 and a coil 132 wound on the toroidal core 131, and the toroidal inductive component 130 comprises a first region 133 facing the gap 150, wherein the toroidal core 131 is not wound by the coil 132.

The bottom of the housing is used as a heat dissipation member, and has an arc-shaped heat dissipation surface 123 corresponding to the surface of the first region 133 of the corresponding annular inductor assembly.

However, when the heat dissipation member of the electrical device is configured as the arc-shaped surface as shown in fig. 1, since the toroidal inductor assembly 130 has the first region 133 in which the toroidal core 131 is not wound by the coil 132, the heat dissipation pad disposed in the gap cannot completely fill the gap 151 between the first region 133 of the toroidal inductor assembly 130 in which the coil is not wound and the arc-shaped heat dissipation surface 123 of the bottom of the housing, so that the heat dissipation pad cannot completely contact the first region 133 of the toroidal inductor assembly 130 in which the coil is not wound, thereby causing poor heat dissipation effect to the first region, and particularly when the power consumption of the toroidal inductor assembly is high, the electrical device cannot achieve timely good heat dissipation and has poor heat dissipation performance.

Based on the above, in order to improve the heat dissipation performance of the electrical device, the present invention provides an electrical device 200. Fig. 3 illustrates a partial cross-sectional view of an electrical device 200 according to an embodiment of the present disclosure, and fig. 4 illustrates a partial cross-sectional view of the electrical device 200 after a heat dissipation pad is provided according to an embodiment of the present disclosure.

Referring to fig. 3 and 4, the electrical device 200 includes a circuit board 210 and a heat dissipating member 220, and the electrical device 200 further includes a circular inductor assembly 230 located between the circuit board 210 and the heat dissipating member 220, and a gap 250 exists between the circular inductor assembly 230 and the heat dissipating member 220, and a heat dissipating pad 240 is disposed in the gap 250.

The circuit board 210 may, for example, provide input filter components, output filter components, etc. for the electrical device 200. However, it should be appreciated that the circuit board 210 may also include one or more other functional modules or components, for example, including signal connectors, transformers, etc., based on actual functional requirements. Embodiments of the present disclosure are not limited by the specific components included on the circuit board and the locations where they are disposed.

The toroidal inductive component 230 may be, for example, a toroidal common mode inductive component, or it may be another type of inductive component. Embodiments of the present disclosure are not limited by the particular type of toroidal inductive component and the specific functionality it has.

The heat dissipating means 220 is intended to characterize means for dissipating heat from the electrical device 200, in particular for dissipating heat from a toroidal inductive component in the electrical device. It may be, for example, a separate heat dissipating member, such as a heat sink or heat dissipating device; or it may be part of the composition of the electrical device, for example it may be a bottom wall, a peripheral wall or an inner cavity wall of the housing of the electrical device facing the toroidal inductive component. Embodiments of the present disclosure are not limited by the specific expression of the heat dissipation member and the specific constituent structure thereof.

The heat sink pad 240 is intended to represent a pad for achieving heat dissipation. It may be, for example, a heat-dissipating pad directly made of an insulating and heat-conductive material, or it may be a pad-like object formed by curing a heat-dissipating paste after the heat-dissipating paste is applied in the gap several times. Embodiments of the present disclosure are not limited by the specific formation of the thermal pad and its shape.

Wherein the toroidal inductive component 230 comprises a toroidal core 231 and a coil 232 wound on the toroidal core 231, and the toroidal inductive component 230 comprises a first region 233 facing the gap 250, wherein the toroidal core 231 is not wound by the coil 232.

The toroidal core 231 may be, for example, a circular core, or a fully or partially toroidal core. Embodiments of the present disclosure are not limited by the particular configuration of the toroidal core.

And wherein the heat dissipation member 220 has a first surface 223 corresponding to a first region 233 of the toroidal inductive component 230 in which the toroidal core is not wound by a coil, the first surface 223 being an at least partially flat surface, the heat dissipation pad 240 filling a gap between the first region 233 of the toroidal inductive component 230 and the first surface 223 of the heat dissipation member 220.

In view of the above, with the electrical device 200 provided by the present invention, by providing the first surface of the heat dissipation member corresponding to the first region of the toroidal inductor assembly, in which the toroidal core is not wound by the coil, as an at least partially flat surface, it is possible to effectively increase the contact area between the heat dissipation pad and the toroidal inductor assembly in the electrical device, particularly the first region of the toroidal core in the toroidal inductor assembly, in which the coil is not wound, and improve the heat dissipation performance of the electrical device, while achieving the function of the electrical device.

In some embodiments, the electrical device 200 further comprises a housing, and the heat dissipating member is a wall of the housing. The heat dissipation member 220 shown in fig. 3 is a wall of the housing of the electrical device 200.

Based on the above, by providing the heat dissipation member as a wall of the housing, on one hand, the circuit structure can be simplified, and the volume of the electrical device can be reduced; on the other hand, the wall of the shell is set as the heat dissipation component, so that heat generated by the electric device during working can be timely transmitted to the outside, and the heat dissipation efficiency is improved.

Fig. 5 illustrates an exemplary schematic view of a heat dissipating member of an electrical device 200 according to an embodiment of the present disclosure.

Referring to fig. 5, in some embodiments, the annular inductor assembly 230 is mounted on the circuit board 210 between the circuit board and the heat dissipating member, and wherein the bottom wall 261 of the housing serves as the heat dissipating member.

At this time, there is a gap between the toroidal inductive component and the bottom wall 261 of the case, and the toroidal inductive component includes the first region 233 facing the gap, in which the toroidal core of the toroidal inductive component is not wound by the coil.

And the bottom wall 261 has a first surface 262 corresponding to a first region 233 of the toroidal inductive component 230 in which the toroidal core is not wound by a coil, the first surface 262 being an at least partially flat surface. Thereafter, the thermal pad will fill the gap (not shown in fig. 5) between the first region of the annular inductor assembly and the first surface 262 of the housing bottom wall.

Based on the above, when the bottom wall of the housing is used as the heat dissipation member, the bottom wall of the housing can perform a heat dissipation function on the annular inductance assembly and simultaneously can perform a supporting function on the annular inductance assembly in a vertical direction together with the heat dissipation pad, so as to maintain a good positioning of the annular inductance assembly between the circuit board of the electrical device and the housing.

In some embodiments, the toroidal inductive component 230 is mounted inside the housing 260, and wherein the wall of the housing is a peripheral wall of the housing or an inner cavity wall of the housing.

The annular inductance assembly can be installed inside the housing in a horizontal mode, namely the central axis of an annular magnetic core in the annular inductance assembly is perpendicular to the horizontal surface of the housing; or it may be installed inside the housing in a vertical manner, that is, the central axis of the annular magnetic core in the annular inductance assembly is parallel to the horizontal surface of the housing. The embodiments of the present disclosure are not limited by the installation manner of the annular inductance assembly inside the housing and the installation position thereof.

The peripheral wall is intended to characterize the peripheral wall of the housing that is perpendicular to the bottom surface of the housing and is disposed at the inner periphery of the housing, i.e. the side wall of the housing. The inner cavity wall is intended to characterize a housing wall in the housing perpendicular to the housing bottom surface for forming a cavity inside the housing, which inner cavity wall may for example be used for forming an input filter cavity for accommodating an input filter assembly, an output filter cavity for accommodating an output filter assembly, etc. Embodiments of the present disclosure are not limited by the particular location of formation of the housing lumen and its function.

Fig. 6 shows an exemplary schematic view of a heat dissipating member of an electrical device 200 according to an embodiment of the present disclosure, wherein a peripheral wall of the housing serves as the heat dissipating member.

Referring to fig. 6, the toroidal inductive component 230 is shown mounted inside the housing 260 in a horizontal manner. And wherein a first region 233 of the toroidal inductive component 230 in which the toroidal core is not wound by a coil faces a peripheral wall 263 in the housing.

At this time, there is a gap between the toroidal inductive component and the peripheral wall 263 of the case, and the toroidal inductive component includes the first region 233 facing the gap, in which the toroidal core of the toroidal inductive component is not wound by the coil.

And the peripheral wall 263 has a first surface 264 corresponding to the first area 233 of the toroidal inductive component 230 in which the toroidal core is not wound by the coil, the first surface 264 being an at least partially flat surface, after which the thermal pad fills the gap (not shown in fig. 6) between the first area 233 of the toroidal inductive component and the first surface 264 of the peripheral wall 263.

Fig. 7 illustrates an exemplary schematic view of a heat dissipating member of electrical device 200, wherein inner cavity wall 265 of the housing acts as a heat dissipating member, in accordance with an embodiment of the present disclosure.

Referring to fig. 7, the toroidal inductive component 230 is shown mounted inside the housing 260 in a horizontal manner. And wherein a gap exists between the toroidal inductive component and an inner chamber wall 265 within an inner chamber 267 of the housing, and the toroidal inductive component comprises a first region 233 facing the gap, wherein a toroidal core of the toroidal inductive component is not wound with a coil.

And the inner cavity wall 265 has a first surface 266 corresponding to a first region 233 of the toroidal inductive component 230 in which the toroidal core is not wound by a coil, the first surface 266 being an at least partially planar surface. Thereafter, the thermal pad fills a gap (not shown in fig. 7) between the first region 233 of the toroidal inductive component and the first surface 266 of inner cavity wall 265.

Based on the above, under the condition that the annular inductance assembly is arranged inside the shell, the peripheral wall or the inner cavity wall of the shell is flexibly selected to serve as the heat dissipation member, so that when the annular inductance assembly is arranged at different positions in the shell based on different use requirements, good heat dissipation of the annular inductance assembly can be achieved, and the heat dissipation performance of the electrical device is improved.

The second surface of the heat sink member is intended to characterize the surface of the heat sink member corresponding to the coil region 234 of the toroidal inductive component in which the toroidal core is wound by a coil. The heat dissipating member may, for example, have only one second surface, or it may have a plurality of heat dissipating surfaces, such as the heat dissipating member shown in fig. 3, which has two second surfaces, surface 224A and surface 224B, respectively. Embodiments of the present disclosure are not limited by the number of second surfaces the heat dissipation member has.

The second surface of the heat dissipating member may be, for example, an entirely arc-shaped surface, or only a portion thereof may be an arc-shaped surface, and another portion thereof may be a flat surface or have another surface shape. Embodiments of the present disclosure are not limited by the specific aspect ratio of the arcuate surface in the second surface.

Based on the above, by setting a part of the second surface of the heat dissipation member corresponding to the coil region of the toroidal inductor assembly, in which the toroidal core is wound by the coil, as an arc-shaped surface and making the arc-shaped surface correspond to the arc-shaped surface of the coil region of the toroidal inductor assembly, it is possible to improve the contact quality of the heat dissipation pad and the toroidal inductor assembly in the coil region of the toroidal inductor assembly, thereby improving the heat dissipation effect on the coil region of the toroidal inductor assembly, and further improving the heat dissipation performance of the electrical device.

In particular, referring to fig. 3, the two second surfaces of the heat dissipation member may be described in more detail, for example, with respect to each other with respect to the first surface of the heat dissipation member. Wherein the two

second surfaces

224A and 224B of the heat discharging member are adjacent to the first surface 223 and are arranged at both sides of the first surface 223 as shown in fig. 3.

Based on the above, on the basis that one part of the second surfaces is the arc-shaped surface corresponding to the arc-shaped surface of the coil region of the annular inductance assembly, the heat dissipation member includes two second surfaces which are adjacent to the first surface and opposite to each other relative to the first surface, so that the contact quality between the heat dissipation pad and the annular inductance assembly can be improved for the coil regions on both sides of the first region of the annular inductance assembly, the heat dissipation effect on the coil region of the annular inductance assembly is improved, and the heat dissipation performance of the electrical device is further improved.

The heat conducting and insulating material may be, for example, heat conducting silica gel, or it may also be other types of heat conducting and insulating materials. Embodiments of the present disclosure are not limited by the particular thermally conductive and insulating material chosen.

Based on the above, the heat dissipation pad is made of the material with heat conduction and insulation, so that the heat dissipation effect of the heat dissipation pad can be improved, and the heat dissipation performance of the electrical material is further enhanced.

The flexible compressible material aims to represent a material which has high tensile strength, large elongation and is easy to compress. The material may be, for example, a silicone pad, or it may be another flexible compressible material. Embodiments of the present disclosure are not limited by the particular type of flexible, compressible material selected.

The initial thickness of the thermal pad is intended to characterize the thickness that the thermal pad has in an uncompressed initial state, i.e., the inherent thickness of the thermal pad.

Based on the above, by setting the heat dissipation pad to be a flexible and compressible material, the heat dissipation pad can be compressed and deformed to well fill a gap existing between the annular inductance assembly and the heat dissipation member, so that the close contact of the heat dissipation pad and the annular inductance assembly is ensured, and the heat dissipation performance is improved; in addition, the initial thickness of the heat dissipation pad is further set to be larger than or equal to the distance of the gap between the annular inductance assembly and the heat dissipation component, so that the heat dissipation pad can be sufficiently compressed in the gap to a certain extent, and the heat dissipation performance of the heat dissipation pad is further improved.

In some embodiments, the heat dissipation pad is a thermally conductive silicone pad. Through setting up the cooling pad is heat conduction silica gel pad, on the basis of realizing good heat dissipation, is favorable to practicing thrift manufacturing cost, improves electric elements's manufacturing efficiency.

In some embodiments, the circuit board is perpendicular to the vertical direction, and the annular inductance component overhangs the circuit board in the vertical direction. Through setting up annular inductance subassembly hangs along the vertical direction on the circuit board, be favorable to realizing subsequent electrical equipment's installation, when the heat dissipation component is the diapire of casing, all around wall or inner chamber wall simultaneously, can also realize the good support location to this annular inductance subassembly via the heat dissipation component.

Based on the above, by setting the annular inductance component to be a common mode inductance, the annular inductance component can form an input filter component and an output filter component with other devices, such as a capacitor, so as to further realize corresponding functions of the electrical device.

In some embodiments, the electrical device forms a charging device for a vehicle, or an inverter, or a direct current-direct current (DC-DC) converter.

The charging device is a device for charging a battery of a motor vehicle. It may, for example, be provided independently of the vehicle, in use connected to the battery of the vehicle to be charged via the power line. Or it may be configured on a vehicle, embodiments of the present disclosure are not limited by the particular configuration of the charging device relative to the motor vehicle.

The charging device may be, for example, a medium-and-large charging pile on both sides of a road, or it may be a low-power charger, for example, it may be a low-power charger with 3.5kw of power, or it may be a low-power charger with 7kw of power. Embodiments of the present disclosure are not limited by the specific structural dimensions of the charging device and its power.

The inverter is intended to represent a device for converting Direct Current (DC) into Alternating Current (AC), which may consist of, for example, an inverter bridge, control logic and a filter circuit, or may also have other components. Embodiments of the present disclosure are not limited by the specific composition of the inverter and its configuration on the motor vehicle.

The dc-dc converter is intended to characterize a device for converting the dc power supply into a dc or near dc power supply of a different voltage. It can output a dc voltage of 450V or 400V, for example, depending on the actual requirements. Embodiments of the present disclosure are not affected by the specific composition of the dc-dc converter and its output voltage.

Based on the above, by forming the electrical device as a device having different functions for a motor vehicle based on actual needs, it is possible to satisfy different needs of users, to well implement the corresponding functions, and to have good heat dissipation performance, and when it is operating normally, it is possible to significantly reduce the influence of heat generated by it on external equipment disposed adjacent thereto or connected thereto.

The motor vehicle may be a Plug-in Hybrid Electric vehicle (Plug-in Hybrid Electric vehicle), or it may be a Battery Electric vehicle (Battery Electric vehicle) or other type of motor vehicle. Embodiments of the present disclosure are not limited by the particular type of motor vehicle.

Based on the above, the motor vehicle can realize the functions of the device and has the advantages as described above.

This application uses specific words to describe embodiments of the application. Reference to "a first/second embodiment," "an embodiment," and/or "some embodiments" means a feature, structure, or characteristic described in connection with at least one embodiment of the application. Therefore, it is emphasized and should be appreciated that two or more references to "an embodiment" or "one embodiment" or "an alternative embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, some features, structures, or characteristics of one or more embodiments of the present application may be combined as appropriate.

Moreover, those skilled in the art will appreciate that aspects of the present application may be illustrated and described in terms of several patentable species or situations, including any new and useful combination of processes, machines, manufacture, or materials, or any new and useful improvement thereon.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

The foregoing is illustrative of the present invention and is not to be construed as limiting thereof. Although a few exemplary embodiments of this invention have been described, those skilled in the art will readily appreciate that many modifications are possible in the exemplary embodiments without materially departing from the novel teachings and advantages of this invention. Accordingly, all such modifications are intended to be included within the scope of this invention as defined in the claims. It is to be understood that the foregoing is illustrative of the present invention and is not to be construed as limited to the specific embodiments disclosed, and that modifications to the disclosed embodiments, as well as other embodiments, are intended to be included within the scope of the appended claims. The invention is defined by the claims and their equivalents.

Claims

1. An electrical device comprising a circuit board and a heat dissipating member, the electrical device further comprising:

a toroidal inductor assembly located between a circuit board and the heat dissipating member,

a gap exists between the annular inductor assembly and the heat dissipating member,

the heat dissipation pad is arranged in the gap;

wherein the toroidal inductive component comprises a toroidal core and a coil wound on the toroidal core, and the toroidal inductive component comprises a first region facing the gap, the toroidal core in the first region not being wound by the coil;

and wherein the heat dissipation member has a first surface corresponding to a first region of the toroidal inductive assembly in which the toroidal core is not wound by a coil, the first surface being an at least partially flat surface, the heat dissipation pad filling a gap between the first region of the toroidal inductive assembly and the first surface of the heat dissipation member.

2. The electrical device of claim 1, wherein the electrical device further comprises a housing and the heat dissipating member is a wall of the housing.

3. The electrical device of claim 2 wherein the toroidal inductive component is mounted on the circuit board, and wherein the wall of the housing is a bottom wall of the housing.

4. The electrical device of claim 2, wherein the toroidal inductive component is mounted inside the housing, and wherein the wall of the housing is a peripheral wall of the housing or an inner cavity wall of the housing.

5. The electrical device as claimed in claim 1 or 2, wherein the heat dissipating member has a second surface corresponding to a coil region of the toroidal inductive component in which the toroidal core is wound by a coil, a portion of the second surface of the heat dissipating member being an arc-shaped surface corresponding to an arc-shaped surface that the coil region of the toroidal inductive component has.

6. The electrical device of claim 5, wherein the heat dissipating member includes two second surfaces adjacent to and opposite to a first surface of the heat dissipating member,

the first surface of the heat dissipation member faces a first region of the toroidal inductive assembly and the second surface of the heat dissipation member faces a corresponding coil region of the toroidal inductive assembly.

7. The electrical device of claim 1, wherein the thermal pad is made of a thermally conductive and insulating material.

8. The electrical device of claim 1, wherein the heat sink pad is made of a flexible, compressible material and has an initial thickness that is greater than or equal to a distance of a gap existing between the annular inductance assembly and the heat dissipating member.

9. The electrical device of claim 1, wherein the heat-dissipating pad is a thermally conductive silicone pad.

10. The electrical device of claim 1, wherein the circuit board is perpendicular to the vertical direction and the toroidal inductive component overhangs the circuit board in the vertical direction.

11. The electrical device of claim 1, wherein the toroidal inductor component is a common mode inductor.

12. The electrical device of claim 1, wherein the electrical device forms a charging device for a vehicle, or an inverter, or a dc-dc converter.

13. A motor vehicle comprising an electrical device according to any one of claims 1-12.