Electromagnetic shielding structure of power supply assembly

Abstract

The utility model discloses an electromagnetic shielding structure of a power supply assembly, and relates to the technical field of power supply assembly packaging structures, the electromagnetic shielding structure comprises a housing, a power supply assembly and a heat dissipation assembly, the power supply assembly and the heat dissipation assembly are arranged in the housing, the housing comprises a power supply cavity, a bottom heat dissipation cavity and a side wall heat dissipation cavity, the power supply cavity is an independent sealed cavity, and the bottom heat dissipation cavity is a sealed cavity. The bottom heat dissipation cavity and the side wall heat dissipation cavity are communicated to form an L-shaped structure, the power source assembly is located in the power source cavity, a vapor chamber is arranged at the bottom of the power source cavity, the heat dissipation assembly comprises heat dissipation fins and a heat dissipation fan, the heat dissipation fan is located on one side of the heat dissipation cavity, the vapor chamber is located on the lower portion of the interior of the power source cavity, and the heat dissipation fins are located in the heat dissipation cavity. The heat dissipation fins are located in the bottom heat dissipation cavity. And the axes of the heat dissipation fins are parallel to the axis of the heat dissipation fan. According to the utility model, the electromagnetic shielding effect can be improved while heat radiation is ensured, and electromagnetic leakage is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of power supply component packaging structure, in particular to an electromagnetic shielding structure of a power supply component. Background Art

[0002] Power supply components require electromagnetic shielding, mainly because electromagnetic shielding technology can cut off the propagation path of electromagnetic waves, thereby eliminating interference. In high-frequency circuit operation, power supply components will radiate electromagnetic waves outward, causing interference to other nearby devices. At the same time, various electromagnetic waves in space will also be induced into the circuit, causing interference to the circuit.

[0003] Electromagnetic shielding is the use of shielding bodies to attenuate electromagnetic waves. The magnitude of this effect is measured by shielding effectiveness. Shielding bodies are used to surround receiving circuits, devices or systems to prevent them from being affected by external electromagnetic fields. Existing technologies mostly use integral metal shells, which have good shielding effects.

[0004] There are only two factors that really affect the shielding effectiveness of the shield: one is that the entire shield surface must be conductive and continuous, and the other is that there must be no conductor that directly penetrates the shield. The shells of existing power supply components often have gaps, the overall sealing effect is poor, the conductivity is discontinuous, and there are many conductive discontinuous points on the shield, forming non-conductive gaps. These non-conductive gaps generate electromagnetic leakage. Utility Model Content

[0005] The purpose of the utility model is to provide an electromagnetic shielding structure of a power supply component to solve the problems existing in the background technology.

[0006] The purpose of this utility model is achieved through the following technical solutions:

[0007] An electromagnetic shielding structure of a power supply component comprises a shell, a power supply component and a heat dissipation component located in the shell, the shell comprises a power supply cavity, a bottom heat dissipation cavity and a side wall heat dissipation cavity, the power supply cavity is an independent sealed cavity, the bottom heat dissipation cavity is located at the bottom of the power supply cavity, the side wall heat dissipation cavity is located at one side of the power supply cavity, the bottom heat dissipation cavity and the side wall heat dissipation cavity are connected to form an L-shaped structure,

[0008] The power supply assembly is located in the power supply cavity, the bottom of the power supply cavity is a heat spreader, the heat dissipation assembly includes heat dissipation fins and a heat dissipation fan, the heat dissipation fan is located on one side of the side wall heat dissipation cavity, the heat dissipation fins are located in the bottom heat dissipation cavity and connected to the heat spreader; the axis of the heat dissipation fins is parallel to the axis of the heat dissipation fan;

[0009] The shells on both sides of the bottom heat dissipation cavity are provided with slots on both sides of the axis of the heat dissipation fins, and the side wall heat dissipation cavity is provided with heat dissipation holes at positions corresponding to the heat dissipation fans.

[0010] Furthermore, a placement groove and a wiring groove are provided in the power cavity, the body of the power supply component is located in the placement groove, the power supply component is attached to the heat spreader, and the connecting wire of the power supply component is located in the wiring groove.

[0011] Furthermore, a sealing groove is arranged around the top of the power cavity, and a conductive rubber strip is arranged in the sealing groove.

[0012] Furthermore, the shell and heat dissipation fins are made of aluminum alloy.

[0013] The beneficial effects of the utility model are:

[0014] 1) The power cavity is an independent sealed cavity, and the power component is located in the power cavity, which can greatly improve the electromagnetic shielding effect without affecting the heat dissipation. At the same time, the shielding effect can be further improved by the bottom heat dissipation cavity, the side wall heat dissipation cavity and the shell surrounding the outside.

[0015] 2) The top shell and the power cavity are sealed by a sealing groove and a conductive rubber head to reduce gaps, ensure the overall conductive continuity of the outside of the power cavity, reduce conductive discontinuities, avoid the formation of non-conductive gaps, and thus avoid electromagnetic leakage.

[0016] 3) The heat generated by the power supply components is introduced into the heat spreader, which is equipped with a flow channel to take away the heat. At the same time, the heat sink fins are perpendicular to the heat spreader, and the heat will be further introduced into the heat sink fins. The heat inside the heat sink fins can be blown away by the heat sink fan parallel to the axis of the heat sink fins, further improving the heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of the electromagnetic shielding structure of a power supply component of the utility model;

[0018] Figure 2 This is a three-dimensional diagram of an electromagnetic shielding structure of a power supply assembly of the utility model without the top shell;

[0019] Figure 3 This is a three-dimensional diagram of an electromagnetic shielding structure of a power supply assembly of the utility model without the bottom shell;

[0020] Figure 4 It is a top view of an electromagnetic shielding structure of a power supply component of the utility model;

[0021] Figure 5 It is an enlarged schematic diagram of point A in the utility model;

[0022] In the figure, 1-shell, 11-power cavity, 12-bottom heat dissipation cavity, 13-side wall heat dissipation cavity, 14-wiring groove, 15-sealing groove, 16-slot, 17-heat dissipation hole, 18-heat spreader, 19-placement groove, 21-heat dissipation fins, 22-cooling fan, 3-power supply assembly. DETAILED DESCRIPTION

[0023] The following will be combined with the embodiments to clearly and completely describe the technical solution of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-Figure 5 , the utility model provides a technical solution:

[0025] like Figure 1-Figure 5 As shown, an electromagnetic shielding structure of a power supply component includes a shell 1 and a power supply component 3 and a heat dissipation component located in the shell 1, wherein an independently sealed power supply cavity 11 is separately provided in the shell 1, and a bottom heat dissipation cavity 12 and a side wall heat dissipation cavity 13 are connected and surround the power supply cavity 11 in the middle.

[0026] Since the power cavity 11 is an independent sealed cavity, the power supply component 3 is located in the power cavity 11, which can greatly improve the electromagnetic shielding effect without affecting the heat dissipation. At the same time, the shielding effect can be further improved by the bottom heat dissipation cavity 12, side wall heat dissipation cavity 13 and shell 1 surrounding the outside.

[0027] Furthermore, a placement groove 19 and a wiring groove 14 are provided in the power cavity 11 , the body of the power component 3 is located in the placement groove 19 , the power component 3 is attached to the heat spreader 18 , and the connecting wire of the power component 3 is located in the wiring groove 14 .

[0028] Through the above technical solution, the body of the power supply assembly 3 and the connection lines of the power supply assembly 3 are reasonably separated, thereby avoiding clutter in the internal space and improving space utilization.

[0029] Furthermore, a sealing groove 15 is arranged around the top of the power cavity 11 , and a conductive rubber strip is arranged in the sealing groove 15 .

[0030] Through the above technical solution, the top shell 1 and the power cavity 11 are sealed by the sealing groove 15 and the conductive rubber head to reduce the gap, ensure the overall conductive continuity of the outside of the power cavity 11, reduce the conductive discontinuity points, avoid the formation of non-conductive gaps, and thus avoid electromagnetic leakage.

[0031] Furthermore, the housing 1 and the heat sink fins 21 are made of aluminum alloy. The housing 1 made of aluminum alloy forms a closed space in the power cavity 11, forming an electromagnetic shielding body.

[0032] The power supply component 3 is located in the power supply cavity 11, the bottom of the power supply cavity 11 is a heat spreader 18, the heat dissipation component includes heat dissipation fins 21 and a heat dissipation fan 22, the heat dissipation fan 22 is located on one side of the side wall heat dissipation cavity 13, the heat dissipation fins 21 are located in the bottom heat dissipation cavity 12 and are connected to the heat spreader 18; the axis of the heat dissipation fins 21 is parallel to the axis of the heat dissipation fan 22.

[0033] Through the above technical solution, the heat generated by the power supply component 3 is introduced into the heat spreader 18, and a flow channel is provided in the heat spreader 18 to take away the heat. At the same time, the heat dissipation fins 21 are perpendicular to the heat spreader 18, and the heat will be further introduced into the heat dissipation fins 21. The heat dissipation fan 22 parallel to the axis of the heat dissipation fins 21 can blow away the heat in the heat dissipation fins 21, further improving the heat dissipation effect.

[0034] Furthermore, the housing 1 on both sides of the bottom heat dissipation cavity 12 is provided with slots 16 on both sides of the axis of the heat dissipation fins 21, and the side wall heat dissipation cavity 13 is provided with heat dissipation holes 17 at positions corresponding to the heat dissipation fans 22.

[0035] Through the above technical solution, the grooves 16 on both sides can further help the heat dissipation fins 21 to dissipate heat. At the same time, the heat dissipation holes 17 can also help the heat dissipation fan 22 to dissipate heat, thereby improving the heat dissipation effect of the heat dissipation component and avoiding heat accumulation in the bottom heat dissipation cavity 12 and the side wall heat dissipation cavity 13.

[0036] The above is only a preferred embodiment of the utility model. It should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the utility model, and should be protected by the claims attached to the utility model.

Claims

1. An electromagnetic shielding structure of a power supply component, characterized in that: The invention comprises a housing (1), a power supply component (3) and a heat dissipation component located in the housing (1); the housing (1) comprises a power supply cavity (11), a bottom heat dissipation cavity (12) and a side wall heat dissipation cavity (13); the power supply cavity (11) is an independent sealed cavity; the bottom heat dissipation cavity (12) is located at the bottom of the power supply cavity (11); the side wall heat dissipation cavity (13) is located at one side of the power supply cavity (11); the bottom heat dissipation cavity (12) and the side wall heat dissipation cavity (13) are connected to form an L-shaped structure; The power supply component (3) is located in the power supply cavity (11); the bottom of the power supply cavity (11) is a heat spreader (18); the heat dissipation component comprises heat dissipation fins (21) and a heat dissipation fan (22); the heat dissipation fan (22) is located on one side of the side wall heat dissipation cavity (13); the heat dissipation fins (21) are located in the bottom heat dissipation cavity (12) and are connected to the heat spreader (18); the axis of the heat dissipation fins (21) is parallel to the axis of the heat dissipation fan (22); The shell (1) on both sides of the bottom heat dissipation cavity (12) is provided with slots (16) on both sides of the axis of the heat dissipation fins (21), and the side wall heat dissipation cavity (13) is provided with heat dissipation holes (17) at positions corresponding to the heat dissipation fans (22).

2. The electromagnetic shielding structure of the power supply assembly according to claim 1, characterized in that: The power cavity (11) is provided with a placement groove (19) and a wiring groove (14); the body of the power component (3) is located in the placement groove (19); the power component (3) is fitted with the heat spreader (18); and the connection wire of the power component (3) is located in the wiring groove (14).

3. The electromagnetic shielding structure of the power supply assembly according to claim 1, characterized in that: A sealing groove (15) is provided around the top of the power cavity (11), and a conductive rubber strip is provided in the sealing groove (15).

4. The electromagnetic shielding structure of the power supply assembly according to claim 1, characterized in that: The housing (1) and the heat dissipation fins (21) are made of aluminum alloy.

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