CN210129503U - High-voltage box - Google Patents

Abstract

An embodiment of the present utility model provides a high-voltage box, comprising: a housing with an accommodating cavity, a heating device and a heat-conducting pad, the heating device and the heat-conducting pad are attached to each other through a kit, and the heating device and the heat-conducting pad are connected to the housing through the kit. On the inner surface, the sleeve is sleeved on the outer periphery of the heating device and the thermally conductive pad, and the two opposite clamping walls of the sleeve in the stacking direction of the heating device and the thermally conductive pad provide clamping force to the heating device and the thermally conductive pad. The high-voltage box includes a casing, a heating element and a heat-conducting pad arranged in the casing, and a sleeve is sleeved on the outer periphery of the heating element and the heat-conducting cushion, and is connected to the inner surface of the casing through the sleeve. Therefore, the heat dissipated by the heating device can be transferred to the casing through the thermal pad and the cover, thereby improving the heat dissipation capability of the heating device. The kit also provides a holding force to the heating device and the thermal pad through the clamping wall to ensure close contact between the heating device and the thermal pad, and increase the contact area between the heating device and the thermal pad, thereby further improving the heat dissipation effect.

Description

High pressure box

technical field

The utility model relates to the technical field of auxiliary heat dissipation equipment, in particular to a high-voltage box.

Background technique

The device on the circuit board is prone to heat up and the performance of the device will be degraded when working at high temperature for a long time, and the service life will be shortened when working at high temperature for a long time.

In the prior art, generally, a metal block is bonded and fixed on the back of the heating device to increase the overall specific heat capacity and reduce the temperature rise rate. However, this implementation does not reduce the maximum temperature of the device, and the metal block can also cause circuit safety issues such as short circuits.

Therefore, there is an urgent need for a new high-voltage box.

Utility model content

The embodiment of the present invention provides a high-voltage box, which aims to improve the heat dissipation effect of the circuit board.

On the one hand, an embodiment of the present utility model provides a high-voltage box, which includes: a housing with an accommodating cavity, a heating device and a heat-conducting pad, the heat-generating device and the heat-conducting pad are attached to each other through a kit, and the heat-generating device and the heat-conducting pad are connected to each other through the kit On the inner surface of the housing, the sleeve is sleeved on the outer periphery of the heating device and the thermally conductive pad, and the two opposite clamping walls of the sleeve in the stacking direction of the heating device and the thermally conductive pad provide clamping force to the heating device and the thermally conductive pad.

According to one aspect of the present invention, the sleeve is in the shape of a barrel, the two clamping walls are both plate-shaped, and one of the two clamping walls is in contact with the heating device, and the other is in contact with the heat-conducting pad.

According to one aspect of the present invention, the set has two through-holes oppositely arranged along its height direction;

Alternatively, the sleeve has a through opening and a sealing wall oppositely disposed along the height direction thereof, and the sealing wall is connected to the clamping wall.

According to one aspect of the present invention, the casing includes a lower casing with an opening at one end and a cover body covering the opening, the sleeve is connected to the inner surface of the side wall of the lower casing facing the accommodating cavity, and the bottom wall of the lower casing reaches the opening. The height of the kit in the height direction is less than the height of the side walls.

According to one aspect of the present invention, the inner surface of the side wall is provided with:

a stop arm, which is arranged close to the bottom wall and is formed by extending the side wall to the accommodating cavity by a predetermined distance;

The pressing arm is connected to one end of the stop arm away from the side wall, and is formed by extending from the stop arm toward the opening.

According to one aspect of the present invention, the thermally conductive pad is located between the heating element and the pressing arm.

According to one aspect of the present invention, the inner surface of the side wall is further provided with a limit arm, and the limit arm and the pressing arm are arranged at intervals along the length direction of the lower casing to provide the sleeve with a limit along the length direction.

According to one aspect of the present invention, there are two limit arms, and the two limit arms are respectively arranged on both sides of the pressing arm along the length direction.

According to one aspect of the present invention, the thermally conductive pad is any one of thermally conductive foam, thermally conductive silica gel, thermally conductive paste and thermally conductive metal sheet.

According to one aspect of the present invention, the sleeve is made of metal material, or the sleeve is any one of a heat shrinkable sleeve and a rubber sleeve;

And/or, the casing is a metal casing.

In the present invention, the high-voltage box includes a casing, a heating device and a heat-conducting pad arranged in the casing, and a sleeve is sleeved on the outer periphery of the heating device and the heat-conducting pad, and is connected to the inner surface of the casing through the sleeve. Therefore, the heat dissipated by the heating device can be transferred to the casing through the thermal pad and the sleeve, thereby improving the heat dissipation capability of the heating device. In addition, the kit also provides clamping force to the heating device and the thermal pad through the clamping wall, ensuring close contact between the heating device and the thermal pad, increasing the contact area between the heating device and the thermal pad, thereby further improving the heat dissipation effect.

Description of drawings

Other features, objects and advantages of the present invention will become more apparent upon reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar features.

Fig. 1 is the structural representation of a kind of high voltage box of the present utility model embodiment;

2 is a schematic structural diagram of a kit of a high-voltage box according to an embodiment of the present invention;

3 is a schematic structural diagram of a kit of a high-voltage box according to another embodiment of the present invention;

4 is a schematic structural diagram of an assembly process of a high-voltage box according to an embodiment of the present invention;

Fig. 5 is the partial structure schematic diagram of I place in Fig. 4;

6 is a schematic structural diagram of another assembly process of a high-voltage box according to an embodiment of the present invention;

Fig. 7 is the partial structure schematic diagram at II place in Fig. 6;

8 is a partial cross-sectional view of a high-voltage box according to an embodiment of the present invention.

Description of reference numbers:

100, shell;

110, accommodating cavity; 120, lower casing; 121, opening; 122, side wall; 123, bottom wall; 124, stop arm; 125, pressing arm; 126, limit arm; 130, cover body;

200, heating device;

300, thermal pad;

400, kit;

410, clamping wall; 420, through port; 430, sealing wall;

500, circuit board;

X, stacking direction;

Z, height direction;

Y, length direction.

Detailed ways

Features and exemplary embodiments of various aspects of the invention are described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely to provide a better understanding of the present invention by illustrating examples of the present invention. In the drawings and the following description, at least some well-known structures and techniques are not shown in order to avoid unnecessarily obscuring the present invention; and, the dimensions of some structures may be exaggerated for clarity. Furthermore, the features, structures or characteristics described below may be combined in any suitable manner in one or more embodiments.

In the description of the present utility model, it should be noted that, unless otherwise specified, the meaning of "plurality" is two or more; the terms "upper", "lower", "left", "right", "inner", The orientation or positional relationship indicated by "outside" is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood To limit the utility model. Furthermore, the terms "first," "second," etc. are used for descriptive purposes only and should not be construed to indicate or imply relative importance.

The orientation words appearing in the following description are all directions shown in the drawings, and are not intended to limit the specific structures of the embodiments of the present invention. In the description of the present invention, it should also be noted that, unless otherwise expressly specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection, Or integrally connected; it can be directly connected or indirectly connected. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific conditions.

In order to better understand the present invention, the high-voltage box of the embodiment of the present invention will be described in detail below with reference to FIG. 1 to FIG. 8 .

1 is a schematic structural diagram of a high-voltage box provided by an embodiment of the present invention. The high-voltage box includes: a housing 100 having an accommodating cavity 110 , a heating device 200 and a thermal pad 300 . fit, and the heating device 200 and the thermal pad 300 are connected to the inner surface of the housing 100 through the kit 400, the kit 400 is sleeved on the outer periphery of the heating device 200 and the thermal pad 300, and the kit 400 is in the stacking direction of the heating device 200 and the thermal pad 300 ( The two opposite clamping walls 410 in the X direction in FIG. 1 ) provide clamping force to the heating device 200 and the thermal pad 300 .

In the present invention, the high-voltage box includes a casing 100 , a heating device 200 and a thermal pad 300 disposed in the casing 100 , a sleeve 400 is sheathed on the outer periphery of the heating device 200 and the thermal pad 300 , and is connected to the casing through the sleeve 400 the inner surface of the body 100 . Therefore, the heat dissipated by the heating device 200 can be transferred to the casing 100 through the thermal pad 300 and the sleeve 400 , thereby improving the heat dissipation capability of the heating device 200 . In addition, the kit 400 also provides a clamping force to the heating device 200 and the thermal pad 300 through the clamping wall 410, so as to ensure close contact between the heating device 200 and the thermal pad 300, and improve the contact area between the heating device 200 and the thermal pad 300, Thereby, the heat dissipation effect is further improved.

There are various ways of setting the kit 400. For example, the kit 400 is in a barrel shape, the two clamping walls 410 are both plate-shaped, and one of the two clamping walls 410 is in surface contact with the heating device 200, and the other is in contact with the thermal pad. 300 face contacts.

In these optional embodiments, the clamping wall 410 is in the shape of a plate, and the plate-shaped clamping wall 410 can increase the contact area between the sleeve 400 and the heating device 200 and the thermal pad 300 , and improve the contact area between the clamping wall 410 and the heating device 200 and the thermal pad 300 . The clamping force of the thermal pad 300 can further improve the heat dissipation effect.

Please refer to FIG. 2 and FIG. 3 together, the arrangement of the kit 400 is not limited to this. For example, as shown in FIG. 2 , the sleeve 400 has a through opening 420 in its height direction (Z direction in FIG. 1 ), and a sealing wall 430 disposed opposite to the through opening 420 , and the sealing wall 430 is connected to the clamping wall 410 , the sleeve 400 is sleeved on the outer periphery of the heating device 200 and the thermal pad 300 through the through hole 420 .

Or, as shown in FIG. 3 , in other optional embodiments, the kit 400 has two through-holes 420 oppositely arranged in the height direction thereof. In these optional embodiments, the sleeve 400 is sleeved on the outer periphery of the heating device 200 and the thermally conductive pad 300 through one of the through holes 420 . Since the sleeve 400 has two through-holes 420 disposed opposite to each other, and does not have the sealing wall 430 , the space occupied by the sleeve 400 in the height direction can be further reduced.

The manufacturing material of the kit 400 is not limited herein. The kit 400 can be made of a metal material, and the heat dissipation effect of the kit 400 can be improved by utilizing the good heat dissipation performance of the metal material. Alternatively, the sleeve 400 is either a heat shrinkable sleeve or a rubber sleeve, so as to improve the clamping capability of the sleeve 400 to the heating device 200 and the thermal pad 300 .

Please refer to FIG. 4 to FIG. 7 together. The manufacturing material of the casing 100 is not limited here. Preferably, the casing 100 is a metal casing 100. The metal casing 100 has a high heat dissipation capacity, which can further improve the heat dissipation of the high-voltage box. Effect.

The arrangement of the casing 100 is not limited to this, the casing 100 also includes a lower casing 120 with an opening 121 at one end and a cover 130 disposed at the opening 121 . The sleeve 400 is disposed on the inner surface of the side wall 122 of the lower case 120 facing the accommodating cavity 110 , and the height of the sleeve 400 in the height direction from the bottom wall 123 of the lower case 120 to the opening 121 is smaller than the height of the side wall 122 .

In these optional embodiments, the height of the sleeve 400 is relatively small to ensure that the sleeve 400 is completely located in the accommodating cavity 110 and will not protrude from the opening 121 of the lower casing 120 , thereby reducing the space occupied by the sleeve 400 in the height direction. space. For example, when the package 400 has the sealing wall 430 , the sealing wall 430 is disposed within the opening 121 , and the distance from the sealing wall 430 to the bottom wall 123 of the lower case 120 is smaller than the height of the side wall 122 ; when the package 400 does not have the sealing wall 430 , the height of the kit 400 is smaller than the height of the side wall 122 .

There are various ways of setting the heating device 200. For example, in some optional embodiments, the high-voltage box further includes a circuit board 500, and the heating device 200 is the heating device 200 on the circuit board 500, for example, the heating device 200 is a field effect transistor, etc. . In order to save space, it is convenient for the sleeve 400 to be sleeved outside the heating device 200 and the thermal pad 300 .

In some optional embodiments, the heating device 200 is disposed protruding from the upper surface of the circuit board 500 facing the opening 121 . In these optional embodiments, the kit 400 can be sleeved on the outer periphery of the heating device 200 and the thermal pad 300 from above the circuit board 500 , the structure is simple, and the disassembly and assembly of the kit 500 is more convenient, and it is convenient for part of the heat to be released from the lower shell Dispersed from the opening 121 of the body 120 .

There are various ways for the sleeve 400 to be connected to the inner surface of the side wall 122 of the lower casing 120 . For example, the sleeve 400 is connected to the inner surface of the side wall 122 by bolts, welding, riveting or bonding.

In some other optional embodiments, the inner surface of the side wall 122 is provided with: a stopper arm 124, which is arranged close to the bottom wall 123 and is formed by extending the side wall 122 to the accommodating cavity 110 by a predetermined distance; a pressing arm 125, connected to One end of the stopper arm 124 away from the side wall 122 is formed by extending from the stopper arm 124 toward the opening 121 .

In these optional embodiments, the inner surface of the side wall 122 is provided with a stop arm 124 and a pressing arm 125, and the side wall 122, the stop arm 124 and the pressing arm 125 enclose a limiting space. The kit 400 is sleeved on the outer periphery of the pressing arm 125 , the thermal pad 300 and the heating device 200 , so that at least one clamping wall 410 is located between the pressing arm 125 and the side wall 122 , so that the thermal conductive device and the heating device 200 pass through the kit 400 Hanging above the stop arm 124 . The heat generated by the heating device 200 is transferred to the side wall 122 of the lower casing 120 through the thermal pad 300 , the clamping wall 410 , the pressing arm 125 and the like. In addition, the sleeve 400 is mechanically disposed on the inner surface of the side wall 122 , which has a simple structure and is easy to disassemble and assemble.

Further, the distance between the pressing arm 125 and the side wall 122 is equal to the thickness of the clamping wall 410, so that the clamping wall 410 can be simultaneously connected to the pressing arm 125 and the side wall between the pressing arm 125 and the side wall 122. 122 contacts, so that the heat generated by the heating device 200 is simultaneously transferred to the pressing arm 125 and the side wall 122 through the thermal pad 300 and the clamping wall 410, thereby further improving the heat dissipation effect.

In order to further improve the relative position stability between the sleeve 400 and the lower shell 120, in some optional embodiments, a limit arm 125 is further provided on the inner surface of the side wall 122, and the limit arm 125 and the pressing arm 125 are arranged along the The length direction (Y direction in FIG. 1 ) of the lower casing 120 is spaced apart to provide the sleeve 400 with a limit along the length direction.

In these optional embodiments, the limiting arm 125 and the pressing arm 125 are arranged at intervals, and after the sleeve 400 is sleeved on the outer periphery of the pressing arm 125 , the heating device 200 and the thermal pad 300 , at least part of the sleeve 400 is located on the limiting arm 125 and the pressing arm 125. Therefore, the limit arm 125 can improve the limit along the length direction of the sleeve 400 , and further ensure the stability of the relative position between the sleeve 400 and the side wall 122 .

The number of the limiting arms 125 is not limited herein, and there may be only one limiting arm 125 , and one limiting arm 125 is disposed on one side of the pressing arm 125 in the length direction. Alternatively, there are two limiting arms 125 , and the two limiting arms 125 are respectively disposed on both sides of the pressing arm 125 along the length direction. The two limit arms 125 provide a limit to the sleeve 400 , which can further ensure that the sleeve 400 is stably located between the two limit arms 125 , thereby further improving the relative position stability between the sleeve 400 and the side wall 122 .

The thermal pad 300 can be arranged in various ways. Preferably, the thermal pad 300 is in the shape of a plate and is adapted to the shape of the heat dissipation surface of the heating device 200. The contact area between the heating device 300 and the heating device 200 is improved, thereby improving the heat dissipation effect. The manufacturing material of the thermally conductive pad 300 is not limited herein, for example, the thermally conductive pad 300 is any one of thermally conductive foam, thermally conductive silica gel, thermally conductive paste or thermally conductive metal sheet.

Please refer to FIG. 8 together. The relative positions of the thermal pad 300 , the heating device 200 and the pressing arm 125 are not limited. In some optional embodiments, the thermal pad 300 is located between the heating device 200 and the pressing arm 125 . In the meantime, the heat dissipation path can be further reduced, so that the heat generated by the thermal conductive pad 300 is directly transferred to the pressing arm 125 through the thermal conductive pad 300 , and then transferred to the side wall 122 to improve the heat dissipation effect.

The present invention may be implemented in other specific forms without departing from its spirit and essential characteristics. For example, the algorithms described in specific embodiments may be modified without departing from the basic spirit of the invention in system architecture. Accordingly, the present embodiments are to be regarded in all respects as illustrative and not restrictive, the scope of the present invention being defined by the appended claims rather than the foregoing description, and falling within the meaning and equivalents of the claims All changes within the scope of are thus included in the scope of the present invention.

Claims (10)

1. A high-voltage box, characterized in that, comprising: a housing with an accommodating cavity, a heating device and a thermal pad, the heating device and the thermal pad are bonded to each other by a kit, and the heating device and the thermal pad are passed through the The sleeve is connected to the inner surface of the casing, the sleeve is sleeved on the outer periphery of the heating device and the thermal pad, and the two opposite clamping walls of the sleeve in the stacking direction of the heating device and the thermal pad are directed toward each other. The heat generating element and the thermally conductive pad provide a clamping force. 2 . The high-voltage box according to claim 1 , wherein the sleeve is in the shape of a barrel, the two clamping walls are both plate-shaped, and one of the two clamping walls is connected to the heating element. 3 . The device is in surface contact, and the other is in surface contact with the thermal pad. 3. The high-voltage box according to claim 2, characterized in that, The sleeve has two through openings arranged oppositely along its height direction; Alternatively, the sleeve has a through opening and a sealing wall oppositely disposed along the height direction thereof, and the sealing wall is connected to the clamping wall. 4 . The high-voltage box according to claim 1 , wherein the casing comprises a lower casing with an opening at one end and a cover provided at the opening, and the sleeve is connected to the side of the lower casing. 5 . The wall faces the inner surface of the accommodating cavity, and the height of the sleeve in the height direction from the bottom wall of the lower casing to the opening is smaller than the height of the side wall. 5. The high-voltage box according to claim 4, wherein the inner surface of the side wall is provided with: a stop arm, disposed close to the bottom wall and formed by extending the side wall to the receiving cavity by a predetermined distance; The pressing arm is connected to one end of the stop arm away from the side wall, and is formed by extending from the stop arm toward the opening, and the sleeve is sleeved on the pressing arm, the thermal pad and the the periphery of the heat generating device. 6. The high-voltage box according to claim 5, wherein the thermally conductive pad is located between the heating device and the pressing arm. 7 . The high-voltage box according to claim 5 , wherein a limiting arm is further provided on the inner surface of the side wall, and the limiting arm and the pressing arm are spaced apart along the length direction of the lower casing. 8 . arranged to provide the sleeve with a limit along the length. 8 . The high-voltage box according to claim 7 , wherein the number of the limit arms is two, and the two limit arms are respectively disposed on both sides of the pressing arm along the length direction. 9 . 9 . The high-voltage box according to claim 1 , wherein the thermally conductive pad is any one of thermally conductive foam, thermally conductive silica gel, thermally conductive paste and thermally conductive metal sheet. 10 . 10. The high-voltage box according to claim 1, characterized in that, The sleeve is made of metal material, or the sleeve is any one of a heat shrinkable sleeve and a rubber sleeve; And/or, the casing is a metal casing.

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