CN212809991U - Common mode inductance radiator unit and battery assembly - Google Patents

Abstract

The utility model provides a common mode inductance radiator unit and have battery assembly of this common mode inductance radiator unit, common mode inductance radiator unit includes casing, common mode inductance, heat-conducting element and radiating piece, and common mode inductance and radiating piece are fixed on the casing, and common mode inductance includes magnetic core and coil assembly, and the coil assembly is around locating the magnetic core, and the radiating piece sets up around the coil assembly, and heat-conducting element connects coil assembly and radiating piece. Through setting up heat-conducting piece connection coil assembly and radiating piece, the heat that the heat-conducting piece produced the coil assembly leads to the radiating piece to effectively reduce the temperature of coil assembly, and need not the potting compound or increase the sectional area of coil wire, occupation space is less.

Description

Common mode inductance radiator unit and battery assembly

Technical Field

The field belongs to the electrical field, and particularly relates to a common mode inductance heat dissipation component and a battery assembly with the same.

Background

The common-mode inductor is used as a common component in an electrical product, and can effectively suppress common-mode interference signals, so that the electromagnetic compatibility of the electrical product is improved.

When the common mode inductor works, the coil of the common mode inductor generates a large amount of heat. At present, the common mode inductor mostly adopts glue filling or increases the sectional area of a coil wire to reduce the heat of the inductor. But considering the safety distance of the common mode inductor, the traditional scheme occupies a large space inside the product.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a common mode inductance radiator unit and battery assembly, when the effective radiating of common mode inductance, can reduce the space and occupy.

For realizing the purpose of the utility model, the utility model provides a following technical scheme:

in a first aspect, the utility model provides a common mode inductance radiator unit, common mode inductance radiator unit include casing, common mode inductance, heat-conducting piece and radiating piece, common mode inductance with the radiating piece is fixed on the casing, common mode inductance includes magnetic core and coil assembly, the coil assembly is around locating the magnetic core, the radiating piece set up in around the coil assembly, the heat-conducting piece is connected the coil assembly with the radiating piece.

In one embodiment, the heat conducting member includes a first side surface and a second side surface, which are oppositely disposed, the first side surface has a shape corresponding to a shape of an outer peripheral surface of the coil assembly, the first side surface is attached to the outer peripheral surface of the coil assembly, the second side surface has a shape corresponding to a shape of a first surface of the heat dissipating member facing the heat conducting member, and the second side surface is attached to the first surface.

In one embodiment, the common mode inductor heat dissipation assembly further includes a base and a pressing block, the base is connected with the housing, the coil assembly and the heat conducting element are both disposed on the same side of the base, which faces away from the bottom plate of the housing, the pressing block is fixedly connected with the heat dissipation element, the heat conducting element includes a first end face and a second end face which are oppositely disposed, the first end face is connected with the first side face and the second side face, the second end face is connected with the first side face and the second side face, the first end face is connected with the base, and the second end face is connected with the pressing block.

In one embodiment, the press block is spaced apart from the coil assembly.

In one embodiment, the coil assembly includes a first coil and a second coil, the first coil and the second coil are disposed opposite to each other, and the heat-conducting member includes a first heat-conducting member and a second heat-conducting member, the first heat-conducting member is connected to the first coil, and the second heat-conducting member is connected to the second coil.

In one embodiment, the number of the heat-conducting members is 3 or more, the number of the heat-conducting members connected to the first coil is 2 or more, and the number of the heat-conducting members connected to the second coil is 1 or more.

In one embodiment, the heat conducting member further comprises a third heat conducting member, the third heat conducting member is disposed between the first coil and the second coil, and the third heat conducting member is connected to both the first coil and the second coil.

In one embodiment, the number of the heat dissipation members is the same as the number of the heat conduction members, and the heat dissipation members are arranged correspondingly.

In one embodiment, the heat conducting member is made of silicon gel.

In a second aspect, the present invention further provides a battery assembly, wherein the battery assembly comprises a battery and the common mode inductor heat sink assembly of any one of the embodiments of the second aspect, and the battery is connected to the common mode inductor heat sink assembly.

The utility model provides a common mode inductance radiator unit, through setting up heat conduction piece connecting coil group and radiating piece, the heat direction to the radiating piece that the heat conduction piece produced the coil group to effectively reduce the temperature of coil group, and need not the sectional area of encapsulating or increase coil wire, occupation space is less.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic perspective view of a common mode inductor heat dissipation assembly provided by the present invention;

fig. 2 is a schematic top view of the common mode inductor heat dissipation assembly provided by the present invention;

FIG. 3 is a partially enlarged schematic view of FIG. 1;

FIG. 4 is a partially enlarged schematic view of FIG. 2;

FIG. 5 is a perspective view of a thermally conductive member according to one embodiment;

fig. 6 is a schematic cross-sectional view of the common mode inductance heat sink assembly in fig. 4 along the a-a direction.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.

Referring to fig. 1, fig. 3 and fig. 6, an embodiment of the present invention provides a common mode inductance heat dissipation assembly 100, where the common mode inductance heat dissipation assembly 100 is applicable to electrical equipment such as a fuel cell, an air conditioner, and a refrigerator, and is mainly used for suppressing a common mode interference signal. The common mode inductor heat dissipation assembly 100 includes a housing 10, a common mode inductor 20, a heat conducting member 30 and a heat dissipation member 40, the common mode inductor 20 and the heat dissipation member 40 are fixed on the housing 10, the common mode inductor 20 includes a magnetic core 21 and a coil assembly 22, the coil assembly 22 is wound on the magnetic core 21, the heat dissipation member 40 is disposed around the coil assembly 22, and the heat conducting member 30 connects the coil assembly 22 and the heat dissipation member 40.

Specifically, the material of the casing 10 may be rigid plastic such as polystyrene or polypropylene, or may be metal such as aluminum alloy or titanium alloy. The common mode inductor 20 and the thermal conductor 30 are both located within the housing. The coil assembly 22 may be made of conductive metal such as copper, aluminum, silver, etc., preferably copper. The magnetic core 21 may be a ferrite core, a magnetic powder core, a high magnetic flux magnetic powder core, or the like, wherein the commonly used magnetic powder cores include an iron powder core and an iron-silicon-aluminum powder core. The shapes of ferrite cores are the most varied, and the shapes of magnetic powder cores and high-flux magnetic powder cores are only annular. The magnetic core 21 in this embodiment is annular, and the magnetic core 21 in other embodiments may be U-shaped, E-shaped, or some complex shapes, and the present invention does not limit the shape of the magnetic core 21.

It will be appreciated that the thermal conductivity of the thermal conduction member 30 is much higher than that of air, so that heat generated by the coil assembly 22 preferentially enters the thermal conduction member 30, and the heat sink 40 absorbs the heat due to the thermal conduction member 30 with the heat sink 40 attached thereto, thereby lowering the temperature of the coil assembly 22 or maintaining the coil assembly 22 within a suitable temperature range. In the prior art, the occupied space is too large to control the size of the whole machine, no matter the resistance of the coil group 22 is reduced by increasing the section size of the coil conducting wire, the generated heat is reduced, or the heat is dissipated by large-area glue filling.

The coil assembly 22 and the heat dissipation member 40 are connected through the heat conduction member 30, and the heat generated by the coil assembly 22 is guided to the heat dissipation member 40 through the heat conduction member 30, so that the temperature of the coil assembly 22 is effectively reduced, the sectional area of a coil wire does not need to be filled with glue or increased, and the occupied space is small.

In one embodiment, referring to fig. 5 and 6, the heat conducting member 30 includes a first side surface 301 and a second side surface 302, which are oppositely disposed, the first side surface 301 has a shape corresponding to the shape of the outer peripheral surface of the coil assembly 22, the first side surface 301 is attached to the outer peripheral surface of the coil assembly 22, the second side surface 302 has a shape corresponding to the shape of the first surface of the heat dissipating member 40 facing the heat conducting member 30, and the second side surface 302 is attached to the first surface. By arranging the first side surface 301 of the heat conducting piece 30 to correspond to the shape of the outer peripheral surface of the coil, the first side surface 301 can be tightly attached to the outer peripheral surface of the coil, so that the heat of the coil can enter the heat conducting piece 30, and the heat conductivity is improved; the shape of the second side surface 302 corresponds to the shape of the first surface of the heat dissipation member 40 facing the heat conduction member 30, and the second side surface 302 can be attached to the first surface, which is beneficial to taking away the heat of the heat conduction member 30 by the heat dissipation member 40 and improving the heat dissipation effect. It is understood that, in order to ensure the heat conduction effect of the first side surface 301 and the heat dissipation effect of the second side surface 302, the areas of the first side surface 301 and the second side surface 302 need to be ensured to be large enough, but at the same time, the space occupied by the heat conduction member 30 is increased. The first side surface 301 and the second side surface 302 are oppositely arranged, so that the first side surface 301 and the second side surface 302 can meet the requirement of large-area design, and meanwhile, the space occupied by the heat-conducting member 30 is small, and the compact design of the whole structure is facilitated.

Specifically, the heat sink 40 may be cooled by liquid cooling or air cooling. In this embodiment, the heat dissipation member 40 dissipates heat in a liquid cooling manner, and the water cooling system of the heat dissipation member 40 is disposed on the back surface of the casing 10 facing away from the common mode inductor 20, and a part of the water cooling system extends into the casing 10 and is attached to the second side surface 302 of the heat conduction member 30, so as to bring heat to the water cooling system. Of course, the present invention is not limited to the specific structure of the heat sink 40. The first side surface 301 and the outer peripheral surface of the coil group 22 have corresponding shapes, for example, the outer peripheral surface of the coil group 22 is a circular arc convex surface, and the first side surface 301 may be a circular arc concave surface, preferably a circular arc surface, which has a large area and a good heat transfer effect. Likewise, the second side surface 302 corresponds to the shape of the first surface of the heat dissipation member 40 facing the heat conduction member 30.

In one embodiment, referring to fig. 3 and 5, the heat dissipation member 40 may be disposed on the third side 305 and/or the fourth side 306 of the heat conduction member 30, so as to increase the heat dissipation efficiency, but increase the occupied space to some extent.

In one embodiment, referring to fig. 2, fig. 4 and fig. 6, the common mode inductance heat dissipation assembly 100 further includes a base 50 and a press block 60, the base 50 is connected to the housing 10, the coil assembly 22 and the heat conduction member 30 are both disposed on the same side of the base 50 opposite to the bottom plate 11 of the housing 10, the press block 60 is connected and fixed to the heat dissipation member 40, the heat conduction member 30 includes a first end surface 303 and a second end surface 304 which are disposed oppositely, the first end surface 303 is connected to the first side surface 301 and the second side surface 302, the second end surface 304 is connected to the first side surface 301 and the second side surface 302, the first end surface 303 is connected to the base 50, and the second end surface 304 is connected to. Specifically, the base 50 is provided with a through hole, and the magnetic core 21 is inserted into the through hole. Through setting up briquetting 60 and base 50, briquetting 60 is connected the first terminal surface 303 of heat-conducting piece 30, and base 50 is connected the second terminal surface 304 relative with first terminal surface 303, simultaneously because first side 301 is connected with coil assembly 22, second side 302 is connected with radiating piece 40 for heat-conducting piece 30 can be fixed relative coil and radiating piece 40, is favorable to guaranteeing that the heat dissipation can continuously go on with high efficiency, has improved the reliability.

In one embodiment, referring to FIG. 4, the press 60 is spaced apart from the coil assembly 22. It will be appreciated that the common mode inductance 20 is at a safety distance for electrical safety. By setting the spacing distance between the pressing block 60 and the coil assembly 22, the electrical safety is ensured.

Specifically, the compact 60 is preferably an insulating material. When the pressing block 60 is made of an insulating material, the requirement of the safety distance is relatively low, the spacing distance between the pressing block 60 and the coil assembly 22 can be small, and the contact area between the pressing block 60 and the heat-conducting piece 30 is increased, so that the heat-conducting piece 30 is stabilized on the base 50, and the reliability of heat dissipation is improved.

In one embodiment, referring to fig. 4, the coil assembly 22 includes a first coil 221 and a second coil 222, the first coil 221 and the second coil 222 are disposed opposite to each other, the heat-conducting member 30 includes a first heat-conducting member 31 and a second heat-conducting member 32, the first heat-conducting member 31 is connected to the first coil 221, and the second heat-conducting member 32 is connected to the second coil 222. Specifically, the first coil 221 and the second coil 222 have the same structure. The first heat-conducting member 31 may be disposed on a side of the first coil 221 away from the second coil 222, and the second heat-conducting member 32 may be disposed on a side of the second coil 222 away from the first coil 221. The first heat-conducting member 31 and the second heat-conducting member 32 may have the same structure or different structures. The first and second heat conduction members 31 and 32 are each provided with a heat sink 40 at a side thereof to dissipate heat of the first and second coils 221 and 222. Through setting up first heat-conducting member 31 and second heat-conducting member 32, dispel the heat to first coil 221 and second coil 222 respectively, the radiating efficiency is high, and the space occupies for a short time.

In one embodiment, referring to fig. 3 and 4, the number of the heat conduction members 30 is greater than or equal to 3, the number of the heat conduction members 30 connected to the first coil 221 is greater than or equal to 2, and the number of the heat conduction members 30 connected to the second coil 222 is greater than or equal to 1. It is understood that the number of the heat-conducting members 30 connected to the first coil 221 and the number of the heat-conducting members 30 connected to the second coil 222 may be the same or different, that is, the number of the first heat-conducting members 31 and the number of the second heat-conducting members 32 may be the same or different. Because other components such as a battery are further arranged in the casing, a certain influence is caused on the heat dissipation of the common mode inductor 20, so that the thermal environments of the first coil 221 and the second coil 222 are different, and the heat dissipation efficiency is different, for example, the heat dissipation efficiency of the first coil 221 is lower than that of the second coil 222, in order to make the temperatures of the first coil 221 and the second coil 222 substantially consistent, more first heat-conducting members 31 need to be arranged on the first coil 221. When the water-cooled heat sink 40 is used, the heat dissipation efficiency of the heat sink 40 varies from place to place (the liquid temperature varies, the flow rate varies, and the like), and also in order to make the temperatures of the first coil 221 and the second coil 222 substantially uniform, the numbers of the heat conduction members 30 of the first coil 221 and the second coil 222 may not be uniform. Through the arrangement, the first coil 221 and the second coil 222 can be provided with the corresponding number of heat conducting members 30 according to the actual thermal environment, so that the heat dissipation effect of the first coil 221 and the heat dissipation effect of the second coil 222 are the same, and the temperatures of the first coil 221 and the second coil 222 are basically consistent.

In one embodiment, referring to fig. 3 and 4, the heat conducting member 30 further includes a third heat conducting member 33, the third heat conducting member 33 is disposed between the first coil 221 and the second coil 222, and the third heat conducting member 33 is connected to both the first coil 221 and the second coil 222. Specifically, the third heat-conducting member 33 is connected to both the outer peripheral surface of the first coil 221 and the outer peripheral surface of the second coil 222, and the heat sink 40 is also connected to the third heat-conducting member 33. The third heat conducting member 33 is located on a side of the first coil 221 away from the first heat conducting member 31, and the second coil 222 is located on a side of the second heat conducting member 32, so that the first heat conducting member 31, the second heat conducting member 32 and the third heat conducting member 33 substantially surround the first coil 221 and the second coil 222, the space in the casing is fully utilized, the distribution of heat dissipation points is reasonable, the first coil 221 and the second coil 222 dissipate heat uniformly, and the heat dissipation effect is good. Through setting up third heat-conducting piece 33, third heat-conducting piece 33 is simultaneously to first coil 221 and second coil 222 heat conduction, and cooperation first heat-conducting piece 31 and second heat-conducting piece 32 are to first coil 221 and the heat conduction of a plurality of positions of second coil 222, are favorable to promoting the holistic radiating effect of common mode inductance 20.

In one embodiment, referring to fig. 3, the number of the heat dissipation members 40 is the same as that of the heat conduction members 30 and is correspondingly arranged. By arranging the heat-conducting members 30 and the heat-dissipating members 40 in one-to-one correspondence, the heat dissipation effect of the common mode inductor 20 is further improved.

In one embodiment, depending on the space arrangement in the housing, a plurality of heat dissipation members 40 may be connected to one heat conduction member 30, or a plurality of heat conduction members 30 may be connected to the same heat dissipation member 40, so as to further improve the space utilization.

In one embodiment, referring to fig. 3, the heat conducting member 30 is made of silicon gel. It can be understood that the silicone rubber has a higher thermal conductivity coefficient and a better ductility, and can be better attached to the outer peripheral surface of the coil assembly 22 and the first surface of the heat dissipation member 40, which is beneficial to further improving the heat dissipation effect.

The embodiment of the utility model provides a still provide a battery assembly, battery assembly mainly used power supply, the preferred fuel cell who is applied to in the new energy automobile, especially energy automobile battery. Referring to fig. 1 and 6, the battery assembly includes a battery and a common mode inductive heat dissipation assembly 100 provided by the present invention, and the battery is connected to the common mode inductive heat dissipation assembly 100. Specifically, the battery assembly further includes a dc converter, an output terminal of the battery is connected to a low-voltage terminal of the dc converter, and a high-voltage terminal of the dc converter is connected to the common-mode inductor 20. Through adding in battery assembly the utility model provides a common mode inductance radiator unit 100, battery assembly's radiating efficiency is higher, and inner structure is comparatively compact, is favorable to reducing the size of complete machine.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

Claims (10)

1. The common mode inductor heat dissipation assembly is characterized by comprising a shell, a common mode inductor, a heat conduction piece and a heat dissipation piece, wherein the common mode inductor and the heat dissipation piece are fixed on the shell, the common mode inductor comprises a magnetic core and a coil assembly, the coil assembly is wound on the magnetic core, the heat dissipation piece is arranged around the coil assembly, and the heat conduction piece is connected with the coil assembly and the heat dissipation piece.

2. The common mode inductance heat sink assembly according to claim 1, wherein the heat conducting member includes a first side surface and a second side surface opposite to each other, the first side surface has a shape corresponding to a shape of the outer peripheral surface of the coil assembly, the first side surface is attached to the outer peripheral surface of the coil assembly, the second side surface has a shape corresponding to a shape of a first surface of the heat sink member facing the heat conducting member, and the second side surface is attached to the first surface.

3. The common mode inductance heat dissipation assembly as claimed in claim 2, further comprising a base and a press block, wherein the base is connected to the housing, the coil assembly and the heat conduction member are both disposed on a same side of the base as the base facing away from the bottom plate of the housing, the press block is fixedly connected to the heat dissipation member, the heat conduction member includes a first end surface and a second end surface which are disposed opposite to each other, the first end surface is connected to the first side surface and the second side surface, the second end surface is connected to the first side surface and the second side surface, the first end surface is connected to the base, and the second end surface is connected to the press block.

4. The common mode inductive heat sink assembly of claim 3, wherein said ballast is spaced a distance from said coil assembly.

5. The common mode inductance heat sink assembly according to any one of claims 1 to 4, wherein the coil assembly comprises a first coil and a second coil, the first coil and the second coil are disposed opposite to each other, the heat conducting member comprises a first heat conducting member and a second heat conducting member, the first heat conducting member is connected to the first coil, and the second heat conducting member is connected to the second coil.

6. The common mode inductance heat sink assembly according to claim 5, wherein the number of the heat-conducting members is 3 or more, the number of the heat-conducting members connected to the first coil is 2 or more, and the number of the heat-conducting members connected to the second coil is 1 or more.

7. The common mode inductance heat sink assembly of claim 5, wherein said heat conducting member further comprises a third heat conducting member, said third heat conducting member being disposed between said first coil and said second coil, said third heat conducting member being coupled to both said first coil and said second coil.

8. The common mode inductance heat sink assembly according to claim 6, wherein the number of heat sinks is the same as and corresponding to the number of heat conducting members.

9. The common mode inductor heat sink assembly as claimed in claim 1, wherein the heat conducting member is made of silicon.

10. A battery assembly comprising a battery and the common mode inductive heat sink of claim 9, the battery being connected to the common mode inductive heat sink.

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