Thermal regulation structure for power device

Abstract

The invention discloses a heat regulation structure for a power device, and relates to the field of power devices, the heat regulation structure comprises a power device body and a heat conduction contact piece, the outer side of the power device body is in butt joint with the heat conduction contact piece, and the heat conduction contact piece is used for epitaxial processing of breakdown voltage; the outer end of the heat conduction contact piece is in butt joint with an air supply through pipe in a penetrating mode. The heat regulation structure for the power device is provided with the heat conduction structure, and the movable heat conduction piece in contact with the upper end of the whole power device body in an attached mode is heated in the process that the whole power device body works to generate high temperature, so that heat transfer treatment is carried out through good heat conduction performance of a copper material; the external butt joint piece is arranged on the power device body, heat generated by the power device body is transferred into the external butt joint piece to be stored, the connected air supply through pipe is matched to stably conduct heat transfer treatment to the interior of the heat conduction contact piece on the outer side of the device, heat storage treatment is conducted on the heat in contact with the heat conduction contact piece, and pressure relief operation is rapidly and adaptively conducted according to the heating condition.

Description

Technical Field

[0001] The invention relates to the technical field of power devices, and in particular to a heat regulating structure for power devices. Background Art

[0002] As a basic semiconductor device, power devices are mainly used for power conversion and control circuits. During operation, they need to be equipped with corresponding thermal regulation structures for constant temperature heat dissipation. For example, a heat regulating structure for a power device with publication number CN209487513U includes a substrate and an epitaxial layer, wherein the epitaxial layer is arranged on the top of the substrate, ceramic fibers are arranged inside the substrate, a rectangular groove is arranged on the top of the substrate, and a heat conducting device is arranged in the rectangular groove. The ceramic fibers are doped inside the substrate to increase the anti-breakdown capability of the device, and the thermal conductivity of the ceramic is utilized to facilitate the heat dissipation of the substrate, thereby avoiding the temperature rise of the substrate and thermal breakdown. The heat conducting device in the substrate consists of a copper plate and a heat conducting rod, which is located inside the substrate through the copper plate, and is used to collect heat in the substrate and conduct the heat out through the heat conducting rod. Another example is a power device heat dissipation device and a power device heat dissipation module with publication number CN108573938B, which includes a heat dissipation body, a first working fluid partition, a second working fluid partition, a first cover plate, a second cover plate, a liquid inlet pipe and a liquid outlet pipe. The power device heat dissipation device and the power device heat dissipation module effectively enlarge the contact area between the power device and the heat pipe and the heat exchange area between the working fluid flow channel and the coolant channel. The thermal resistance between the working fluid flow channel and the slot is extremely small, and the heat dissipation efficiency of the power device is high, which is suitable for heat dissipation of high-power devices. In addition, the stacking arrangement of the slot, the working fluid flow channel and the coolant channel replaces the welding of multiple heat dissipation plates with the water inlet pipe and the water outlet pipe in the prior art, which can avoid too many welding points, has a simple manufacturing process, and is low in cost. It can effectively reduce thermal resistance, reduce the risk of coolant leakage, and improve heat dissipation efficiency. For example, a heat sink and power device with publication number CN116864465A, wherein the heat sink comprises: a main structure, the main structure comprises a heat dissipation surface and a welding surface, the welding surface has a welding area for welding the power module; a heat dissipation structure, located on the heat dissipation surface; a wall structure, located on the welding surface and surrounding the welding area, the wall structure and the welding area together enclose a solder accommodating space. In this way, by setting up the wall structure, the risk of fatigue cracking of the solder caused by alternating stress is reduced, the edge solder has no cracking conditions, and the reliability of the power device is increased; Most of the above-mentioned comparative documents have improved their overall structure, while the existing thermal regulation structure for power devices will generate a large amount of heat during operation. Most of the existing heat conduction structures store the heat they contact and are unable to quickly and adaptively perform pressure relief operations according to the heating conditions, resulting in poor overall heating conditions under long-term working conditions. When the temperature is high, it may even cause dangerous conditions such as short circuits and open flames, which leads to certain limitations in use. Summary of the invention

[0003] The object of the present invention is to provide a heat regulating structure for power devices to solve the problem raised in the above background technology that a large amount of heat will be generated during the operation. Most of the existing heat regulating structures for power devices store the heat they contact and cannot quickly and adaptively perform pressure relief operations according to the heating conditions, resulting in poor overall heating conditions under long-term working conditions. When the temperature is high, dangerous conditions such as short circuits and open flames may even occur, thereby resulting in certain usage limitations.

[0004] To achieve the above object, the present invention provides the following technical solution: a heat regulating structure for a power device, comprising a power device body and a heat conducting contact piece, wherein the outer side of the power device body is butt-jointed with the heat conducting contact piece; The outer end of the heat conduction contact piece is connected to an air supply pipe, and the lower end of the air supply pipe is connected to an external connection piece, and the external connection piece is arranged at the upper end of the power device body, and a heat storage cavity is opened on the inner side of the external connection piece, and a heat conduction structure is connected to the inner side of the external connection piece, and the heat generated by the power device body is heat-conducted through the heat conduction structure; The inner end of the heat conduction contact piece is provided with a self-moving structure, through which the heat conducted by the power device body is quickly decompressed.

[0005] Furthermore, the heat conduction structure is provided with a movable heat conductive member, and the movable heat conductive member is nested and docked inside the external docking member, and a return spring is fixedly connected between the edge of the movable heat conductive member and the inner side of the external docking member, and a first air bag is also bonded and connected between the edge of the movable heat conductive member and the inner side of the external docking member; The movable heat-conducting member is bonded and connected with a second airbag inside, and a gas delivery hose is butt-jointed with the outside of the second airbag, and the end of the gas delivery hose is connected with the inside of the first airbag.

[0006] Furthermore, the lower end of the second airbag is docked with a docking connection piece, and the docking connection piece is nested and docked with the interior of the movable heat-conducting part, the lower end of the docking connection piece is docked with an electric cooling docking piece, and the electric cooling docking piece is powered by a button battery preset inside the movable heat-conducting part, and a contact switch is fixedly connected between the outer side of the docking connection piece and the interior of the movable heat-conducting part.

[0007] Furthermore, the movable heat conductive parts are evenly spaced inside the external docking part, and the movable heat conductive parts are made of copper. The movable heat conductive parts cooperate with the return spring to form a telescopic structure along the inner side of the external docking part.

[0008] Furthermore, the second airbag will expand when heated, thereby pushing the docking connection piece and the electric refrigeration docking piece at the lower end to move downward synchronously, so that they contact the contact switch to form a refrigeration treatment, and the second airbag cooperates with the air supply hose to expand and support the interior of the first airbag.

[0009] Furthermore, the self-movable structure is provided with a heat-conducting airbag, and the heat-conducting airbag is docked at the end of the air supply duct, a reserved accommodating groove is provided on the inner side of the heat-conducting contact piece, and a guide groove is provided on the inner side of the reserved accommodating groove, and a movable resistance piece is nested and installed on the outer side of the guide groove, an external extension piece is nested and installed inside the heat-conducting contact piece, and the external extension piece and the inner side of the heat-conducting contact piece are elastically connected, a nested docking piece is fixedly connected to the outer side of the external extension piece, and a preset heat exhaust channel is provided on the outer side of the nested docking piece, and the nested docking piece is nested and docked with the inner side of the heat-conducting contact piece.

[0010] Furthermore, the external docking member is connected to the heat conduction contact member through the air supply duct, and the heat-conducting air bag at the lower end of the air supply duct will expand when heated, so that the movable resistance member pushed by the contact is forced to move outward along the guide groove.

[0011] Furthermore, when the movable abutment member is forced to move outward, it will push the outer extension member and the nested docking member to move outward synchronously.

[0012] Furthermore, during the outward movement of the nested docking member, the preset heat exhaust channel on the outside thereof will be in an on state, thereby adaptively releasing the pressure of the hot air inside the heat conduction contact member to the outside.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The heat regulating structure for power devices is provided with a heat conduction structure. When the whole power device body generates high temperature during operation, the movable heat conducting member in contact with the upper end thereof will be heated accordingly, so that the heat transfer process is performed through the good heat conduction performance of the copper material, so that the heat generated by the power device body is transferred to the external docking member for storage, and the heat is stably transferred to the inside of the heat conduction contact member outside the equipment in coordination with the connected air supply pipe, and the heat contacted by the heat conduction contact member is stored, and the pressure relief operation is quickly and adaptively performed according to the heating condition, so as to avoid the poor heating condition of the whole under the long-term working condition, and the dangerous state of open flame such as short circuit occurs under the condition of high temperature, thereby improving the safety of the device; Furthermore, a self-cooling structure is provided. When the movable heat-conducting part is exposed to a large amount of heat, the second airbag at its inner end will be heated and expand accordingly. The second airbag cooperates with the gas delivery hose to expand and support the inside of the first airbag, pushing the movable heat-conducting part at the corresponding position to move upward as a whole, so that it is out of contact with the high-temperature power device body. At the same time, the expanded second airbag will push the docking connecting piece and the electric refrigeration docking piece at the lower end to move downward synchronously to contact with the power device body, and let the docking connecting piece and the electric refrigeration docking piece contact the contact switch to form a refrigeration process, thereby realizing an adaptive temperature reduction process. Furthermore, a self-moving structure is provided. During the heat conduction of the air supply duct, the heat-conducting air bag at its end will expand due to the heat, thereby pushing the outer movable resistance part to move outward, and at the same time, the external extension part and the nested docking part in contact with the movable resistance part will move outward accordingly, thereby allowing the sealing state between the preset heat exhaust channel and the heat conduction contact part to open adaptively, thereby relieving the hot air accumulated inside, and the outward-moving external extension part will make the overall extension area self-expand in the adjustment range, thereby increasing its heat conduction area and heat dissipation efficiency, and improving the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of a half-cut three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 3 It is a schematic diagram of a half-section three-dimensional structure of an external docking piece of the present invention; Figure 4 For the present invention Figure 3 A schematic diagram of the partially enlarged structure; Figure 5 It is a schematic diagram of a half-cut three-dimensional structure of a heat conduction contact member of the present invention; Figure 6 This is a schematic diagram of the three-dimensional structure of the air supply pipe of the present invention; Figure 7 This is a schematic diagram of a half-section three-dimensional structure of an external extension member of the present invention; Figure 8 This is a schematic diagram of a half-cut three-dimensional structure of the air supply pipe of the present invention; Fig. 9 It is a schematic diagram of the three-dimensional structure of the heat-conducting airbag of the present invention.

[0015] In the figure: 1. Power device body; 2. Heat conduction contact piece; 3. Air supply duct; 4. External docking piece; 5. Movable heat conduction piece; 6. First airbag; 7. Return spring; 8. Second airbag; 9. Docking connection piece; 10. Electric refrigeration docking piece; 11. Contact switch; 12. Air supply hose; 13. Heat conduction airbag; 14. Accommodation reserved groove; 15. Guide slide groove; 16. Movable resistance piece; 17. External extension piece; 18. Nested docking piece; 19. Preset heat exhaust channel; 20. Heat storage cavity. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] Example 1: Please refer to Figure 1-9 The present invention provides the following technical solutions: A thermal regulation structure for a power device, comprising a power device body 1, a heat conduction contact member 2, an air supply pipe 3, an external docking member 4, a movable heat conducting member 5, a first air bag 6, a return spring 7, a second air bag 8, a docking connection piece 9, an electric refrigeration docking piece 10, a contact switch 11, an air delivery hose 12, a heat conducting air bag 13, a reserved accommodating groove 14, a guide slide groove 15, a movable contact member 16, an external extension member 17, a nested docking member 18, a preset heat exhaust channel 19, and a heat storage cavity 20; The outer side of the power device body 1 is butted with a heat conduction contact piece 2, the outer end of the heat conduction contact piece 2 is butted with an air supply pipe 3, and the lower end of the air supply pipe 3 is butted with an external butt piece 4, and the external butt piece 4 is arranged at the upper end of the power device body 1, and a heat storage cavity 20 is opened on the inner side of the external butt piece 4, and a heat conduction structure is butted on the inner side of the external butt piece 4, and the heat generated by the power device body 1 is heat-conducted through the heat conduction structure; The heat conduction structure is provided with a movable heat conducting member 5, and the movable heat conducting member 5 is nested and docked inside the external docking member 4, and a return spring 7 is fixedly connected between the edge of the movable heat conducting member 5 and the inner side of the external docking member 4, and a first air bag 6 is also bonded and connected between the edge of the movable heat conducting member 5 and the inner side of the external docking member 4; a second air bag 8 is bonded and connected inside the movable heat conducting member 5, and a gas hose 12 is docked outside the second air bag 8, and the end of the gas hose 12 is connected to the inside of the first air bag 6. A docking connection piece 9 is docked at the lower end of the second air bag 8, and the docking connection piece 9 is nested and docked with the inside of the movable heat conducting member 5, and an electric refrigeration docking piece 10 is docked at the lower end of the docking connection piece 9, and the electric refrigeration docking piece 10 is powered by a button battery preset inside the movable heat conducting member 5, and a contact switch 11 is fixedly connected between the outer side of the docking connection piece 9 and the inside of the movable heat conducting member 5. The movable heat-conducting parts 5 are evenly spaced about the inside of the external docking part 4, and the movable heat-conducting parts 5 are made of copper, and the movable heat-conducting parts 5 cooperate with the reset spring 7 to form a telescopic structure along the inner side of the external docking part 4. When the second airbag 8 is heated, it will expand, thereby pushing the docking connecting piece 9 and the electric refrigeration docking piece 10 at the lower end to move downward synchronously, so that they contact the contact switch 11 to form a refrigeration process, and the second airbag 8 cooperates with the gas hose 12 to expand and support the inside of the first airbag 6.

[0018] During the process of high temperature generated by the operation of the overall power device body 1, the movable heat-conducting member 5 in contact with the upper end thereof will be heated accordingly, so that heat transfer processing is performed through the good thermal conductivity of the copper material, so that the heat generated by the power device body 1 is transferred to the external docking member 4 for storage processing, and the connected air supply pipe 3 is coordinated to stably transfer heat to the inside of the heat-conducting contact member 2 outside the equipment, and the heat contacted is stored in heat, and the pressure relief operation is quickly and adaptively performed according to the heating conditions, so as to avoid the poor heating state of the overall long-term working state, and the occurrence of open flames such as short circuits when the temperature is high. In a dangerous state, when the movable heat-conducting member 5 is exposed to a large amount of heat, the second airbag 8 at its inner end will expand as a result of the heat, and the second airbag 8 cooperates with the gas hose 12 to expand and support the inside of the first airbag 6, pushing the movable heat-conducting member 5 at the corresponding position to move upward as a whole, so that it is out of contact with the high-temperature power device body 1. At the same time, the expanded second airbag 8 will push the docking connecting piece 9 and the electric refrigeration docking piece 10 at the lower end to move downward synchronously to contact with the power device body 1, and let the docking connecting piece 9 and the electric refrigeration docking piece 10 contact the contact switch 11 to form a refrigeration process, thereby realizing an adaptive cooling process; Example

[0019] On the basis of the first embodiment, a self-moving structure is also disclosed, and its specific structure is as follows: The inner end of the heat conduction contact 2 is provided with a self-moving structure, through which the heat conducted by the power device body 1 is quickly depressurized. The self-moving structure is provided with a heat-conducting airbag 13, and the heat-conducting airbag 13 is docked at the end of the air supply duct 3. The inner side of the heat conduction contact 2 is provided with a reserved groove 14, and the inner side of the reserved groove 14 is provided with a guide slot 15, and the outer side of the guide slot 15 is nested with a movable resistance member 16, and the inner side of the heat conduction contact 2 is nested with an external extension member 17, and the external extension member 17 is elastically connected to the inner side of the heat conduction contact 2, and the outer side of the external extension member 17 is fixedly connected with a nested docking member 18, and the outer side of the nested docking member 18 is provided with a preset heat exhaust channel 19, and the nested docking member 18 is nested and docked with the inner side of the heat conduction contact 2.

[0020] The external docking member 4 is connected to the heat conduction contact member 2 through the air supply pipe 3, and the heat-conducting airbag 13 at the lower end of the air supply pipe 3 will expand when heated, so that the movable resistance member 16 that it pushes to move outward along the guide slot 15. In the process of the movable resistance member 16 moving outward under the force, it will push the external extension member 17 and the nested docking member 18 to move outward synchronously. In the process of the nested docking member 18 moving outward, the preset heat exhaust channel 19 on the outside will be in a connected state, so that the hot air inside the heat conduction contact member 2 is discharged outward in an adaptive manner; During the heat conduction process of the air supply duct 3, the heat-conducting air bag 13 at its end will expand due to the heat, thereby pushing the outer movable resistance member 16 to move outward, and at the same time, the external extension member 17 and the nested docking member 18 in contact with the movable resistance member 16 will move outward accordingly, thereby allowing the sealing state between the preset heat exhaust channel 19 and the heat conduction contact member 17 to be adaptively opened, thereby depressurizing and discharging the hot air accumulated inside, and the outward-moving external extension member 2 will expand the adjustment range of the overall extension area.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A heat regulating structure for a power device, comprising a power device body (1) and a heat conducting contact piece (2), wherein the outer side of the power device body (1) is butt-jointed with the heat conducting contact piece (2); Features: The outer end of the heat conduction contact piece (2) is butted against an air supply pipe (3), and the lower end of the air supply pipe (3) is butted against an external butt piece (4), and the external butt piece (4) is arranged at the upper end of the power device body (1), a heat storage cavity (20) is provided on the inner side of the external butt piece (4), and a heat conduction structure is butted against the inner side of the external butt piece (4), and heat generated by the power device body (1) is heat-conducted through the heat conduction structure; The inner end of the heat conduction contact piece (2) is provided with a self-moving structure, and the heat conducted by the power device body (1) is quickly decompressed by the self-moving structure.

2. A thermal regulation structure for a power device according to claim 1, characterized in that: The heat conduction structure is provided with a movable heat conducting member (5), and the movable heat conducting member (5) is nested and docked inside the external docking member (4), and a return spring (7) is fixedly connected between the edge of the movable heat conducting member (5) and the inner side of the external docking member (4), and a first air bag (6) is also adhesively connected between the edge of the movable heat conducting member (5) and the inner side of the external docking member (4); The movable heat-conducting member (5) is bonded to the inside of a second airbag (8), and the outside of the second airbag (8) is butt-jointed with an air delivery hose (12), and the end of the air delivery hose (12) is connected to the inside of the first airbag (6).

3. A thermal regulation structure for a power device according to claim 2, characterized in that: The lower end of the second airbag (8) is butt-jointed with a butt-jointed connecting piece (9), and the butt-jointed connecting piece (9) is nested and butt-jointed with the inside of the movable heat-conducting member (5); the lower end of the butt-jointed connecting piece (9) is butt-jointed with an electric cooling butt-jointed piece (10), and the electric cooling butt-jointed piece (10) is powered by a button battery preset inside the movable heat-conducting member (5); and a contact switch (11) is fixedly connected between the outer side of the butt-jointed connecting piece (9) and the inside of the movable heat-conducting member (5), respectively.

4. A thermal regulation structure for a power device according to claim 3, characterized in that: The movable heat conducting parts (5) are distributed at equal intervals inside the external docking part (4), the movable heat conducting parts (5) are made of copper, and the movable heat conducting parts (5) cooperate with the return spring (7) to form a telescopic structure along the inner side of the external docking part (4).

5. A thermal regulation structure for a power device according to claim 4, characterized in that: When the second airbag (8) is heated, it will expand, thereby pushing the docking connecting piece (9) and the electric cooling docking piece (10) at the lower end to move downward synchronously, so that they contact the contact switch (11) to form a cooling process, and the second airbag (8) cooperates with the air delivery hose (12) to expand and support the interior of the first airbag (6).

6. The heat regulation structure for power devices according to claim 4, characterized in that: The self-movable structure is provided with a heat-conducting airbag (13), and the heat-conducting airbag (13) is docked at the end of the air supply duct (3); a reserved accommodating groove (14) is provided on the inner side of the heat-conducting contact piece (2), and a guide slot (15) is provided on the inner side of the reserved accommodating groove (14), and a movable abutment piece (16) is nested and installed on the outer side of the guide slot (15); an external extension piece (17) is nested and installed inside the heat-conducting contact piece (2), and the external extension piece (17) and the inner side of the heat-conducting contact piece (2) are elastically connected; a nested docking piece (18) is fixedly connected to the outer side of the external extension piece (17), and a preset heat exhaust channel (19) is provided on the outer side of the nested docking piece (18), and the nested docking piece (18) and the inner side of the heat-conducting contact piece (2) are nested and docked.

7. A thermal regulation structure for a power device according to claim 6, characterized in that: The external docking member (4) is connected to the heat conduction contact member (2) via the air supply duct (3), and the heat conduction air bag (13) at the lower end of the air supply duct (3) expands when heated, so that the movable resistance member (16) in contact is pushed and moved outward along the guide slot (15).

8. The heat regulation structure for power devices according to claim 7, characterized in that: When the movable abutment member (16) is forced to move outward, it will push the outer extension member (17) and the nested docking member (18) to move outward synchronously.

9. A thermal regulation structure for a power device according to claim 8, characterized in that: During the outward movement of the nested docking piece (18), the preset heat exhaust passage (19) on the outside thereof will be in an open state, thereby adaptively releasing the pressure of the hot air inside the heat conduction contact piece (2) to the outside.

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