Transfer piece for power module and anti-oxidation cooling device comprising transfer piece

Abstract

The utility model belongs to the technical field of power modules, and particularly provides a transfer piece for a power module and an anti-oxidation cooling device comprising the transfer piece. The power module aims to solve the problem that in the cooling process of an existing power module, a power terminal is prone to oxidation, and product reliability is affected. Therefore, the transfer piece comprises a transfer plate and a clamping component installed on the transfer plate, the transfer plate is provided with a containing cavity with an opening in one side, the containing cavity is used for containing the positioning clamp, the clamping component is arranged to be capable of clamping and fixing the positioning clamp, and the transfer plate is provided with a first air inlet connector. A first gas channel communicated with the first gas inlet connector is further arranged in the transfer plate, a plurality of first gas outlet holes are formed in the cavity wall of the containing cavity, the first gas channel is communicated with the containing cavity through the first gas outlet holes, and the first gas inlet connector can be communicated with a protective gas system. The transfer piece can protect the power terminals from being oxidized when the power module is transferred, so that the reliability of the product is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of power modules, and specifically provides a transfer piece for a power module and an anti-oxidation and temperature-reducing device comprising the transfer piece. Background Art

[0002] During the packaging process of the power module, the power module and the heat sink need to be fixed by a reflow soldering fixture first, and then placed in a reflow oven for reflow soldering to connect the power module and the heat sink together. During the reflow soldering process, the copper power terminals at both ends of the power module are heated to a high temperature. After the reflow soldering is completed, the power module and the heat sink need to be taken out and cooled. During the process of taking out and cooling, the high-temperature power terminals are easily oxidized after contacting oxygen. The oxidized power terminals will affect the reliability of the product during the assembly process. In addition, in order to improve product reliability, it is necessary to add a deoxidation process, which increases costs.

[0003] Accordingly, this field requires a new technical solution to solve the above technical problems. Utility Model Content

[0004] The utility model aims to solve the above technical problem, that is, to solve the problem that the power terminals of the existing power module are easily oxidized during the cooling process, thereby affecting the reliability of the product.

[0005] In a first aspect, the utility model provides a transfer member for a power module, the transfer member comprising a transfer plate and a clamping member mounted on the transfer plate, the transfer plate being provided with a accommodating cavity with an opening on one side, the accommodating cavity being used to accommodate a positioning fixture for limiting the power module and the heat sink, the clamping member being configured to clamp and fix the positioning fixture so as to lock the positioning fixture in the clamping cavity, the transfer plate being provided with a first air inlet connector, the transfer plate being further provided with a first gas channel connected to the first air inlet connector, a plurality of first air outlet holes being provided on the cavity wall of the accommodating cavity, the first gas channel being connected to the accommodating cavity through the first air outlet hole, and the first air inlet connector being able to be connected to a protective gas system.

[0006] In the above-mentioned preferred technical solution of the transfer member for the power module, the clamping member includes a first clamping member, a second clamping member and a driving member, the first clamping member and the second clamping member are located in the accommodating cavity and are arranged opposite to each other, the first clamping member is fixedly connected to the transfer plate, the second clamping member is connected to the transfer plate and can move toward and away from the first clamping member relative to the transfer plate, the driving member is installed on the transfer plate and is located outside the accommodating cavity, the driving member is connected to the second clamping member, and the driving member is configured to drive the second clamping member to move.

[0007] When adopting the above-mentioned technical scheme, the transfer part of the utility model includes a transfer plate and a clamping member. The transfer plate is provided with a accommodating cavity. The clamping member can clamp and fix the positioning fixture to lock it in the accommodating cavity, thereby facilitating the transfer part to remove and transfer the positioning fixture that carries and limits the power module and the heat sink in the reflow furnace. In addition, a first gas channel and a first air inlet connector are provided on the transfer plate. The first gas channel is connected to the accommodating cavity through a first air outlet. The first air inlet connector can be connected to a protective gas system so that the protective gas system can fill the accommodating cavity with protective gas (for example: nitrogen, helium, etc.), thereby reducing the oxygen content in the accommodating cavity. During the transfer process, the power terminals are protected from oxidation, which is convenient for use.

[0008] Furthermore, the clamping member is provided as a first clamping member, a second clamping member and a driving member, and has a simple structure and is convenient for assembly and use.

[0009] In the second aspect, the utility model provides an anti-oxidation cooling device, which includes a cooling platform and the above-mentioned transfer part. The cooling platform can carry the transfer part and receive the positioning fixture. A receiving groove for accommodating the positioning fixture is provided on the table top of the cooling platform. When the transfer part is placed on the cooling platform, the cooling platform can seal the opening of the accommodating cavity.

[0010] In the preferred technical solution of the above-mentioned anti-oxidation cooling device, a liquid flow channel is also provided in the cooling platform, and a liquid inlet and a liquid outlet connected to the liquid flow channel are provided on the side wall of the cooling platform, and the liquid inlet and the liquid outlet can be connected to the liquid cooling system through pipelines.

[0011] In the preferred technical solution of the above-mentioned anti-oxidation cooling device, a second air inlet connector is provided on the cooling platform, a second gas channel connected to the second air inlet connector is provided in the cooling platform, a plurality of second air outlet holes are provided on the groove wall of the receiving groove, the second gas channel is connected to the receiving groove through the second air outlet holes, and the second air inlet connector can be connected to the protective gas system.

[0012] In the preferred technical solution of the above-mentioned anti-oxidation cooling device, a first guide positioning member is provided on the cooling platform, and a second guide positioning member matched with the first guide positioning member is provided on the transfer plate. After the first guide positioning member cooperates with the second guide positioning member, it can limit the movement of the transfer member along its thickness direction toward the cooling platform and limit the movement of the transfer member along its length and width directions relative to the cooling platform.

[0013] In the preferred technical solution of the above-mentioned anti-oxidation and cooling device, the first guide positioning member is a positioning hole, and the second guide positioning member is a guide column adapted to the positioning hole; or, the second guide positioning member is a positioning hole, and the first guide positioning member is a guide column adapted to the positioning hole.

[0014] In the preferred technical solution of the above-mentioned anti-oxidation and temperature-reducing device, the length of the guide column is greater than the depth of the positioning hole, so that there is a first gap between the transfer member and the temperature-reducing platform when the transfer member is placed on the temperature-reducing platform.

[0015] In the preferred technical solution of the above-mentioned anti-oxidation cooling device, a limiter is provided in the receiving groove, and the limiter is configured to limit the movement of the positioning fixture in the receiving groove relative to the cooling platform along the length direction and width direction of the receiving groove.

[0016] In the preferred technical solution of the above-mentioned anti-oxidation and temperature cooling device, the limiting member includes a first limiting protrusion, a second limiting protrusion, a third limiting protrusion and a fourth limiting protrusion located on the side wall of the accommodating groove; the first limiting protrusion and the second limiting protrusion are spaced apart along the length direction of the accommodating groove, and the third limiting protrusion and the fourth limiting protrusion are spaced apart along the width direction of the accommodating groove, and when the positioning fixture is located in the accommodating groove, the first limiting protrusion, the second limiting protrusion, the third limiting protrusion and the fourth limiting protrusion are all in contact with the side wall of the positioning fixture.

[0017] In the preferred technical solution of the above-mentioned anti-oxidation and temperature reduction device, the anti-oxidation and temperature reduction device further comprises an oxygen content tester, and a detection probe of the oxygen content tester is located in the containing tank.

[0018] When adopting the above-mentioned technical scheme, the anti-oxidation cooling device of the utility model includes a transfer part and a cooling platform. The transfer part can take out the positioning fixture, the power module and the heat sink from the reflow furnace for transfer, and prevent the power terminal from being oxidized during the transfer process. The cooling platform and the transfer part can form a relatively closed cooling space after cooperation, and the protective gas system continuously introduces protective gas (non-oxygen) into the cooling space through the first air outlet, thereby ensuring that the power terminal will not be oxidized during the cooling process, thereby improving the reliability of the product.

[0019] Furthermore, a liquid flow channel is arranged in the cooling platform, and a liquid inlet and a liquid outlet are arranged on the cooling platform, so that the liquid cooling system can be connected with the liquid flow channel through the liquid inlet and the liquid outlet, and cold fluid is transported into the liquid flow channel to cool the cooling platform, so that the cooling platform can exchange heat with the positioning fixture, the power module and the heat sink, thereby improving the cooling speed of the positioning fixture, the power module and the heat sink, thereby shortening the cooling time and improving the cooling efficiency.

[0020] Furthermore, a second gas channel is arranged in the cooling platform, and a second air inlet connector and a second air outlet are arranged on the cooling platform. The protective gas system can sequentially introduce protective gas into the containing tank through the second air inlet connector, the second gas channel and the second air outlet so that the protective gas fills the cooling space. In the process of cooling the positioning fixture, the power module and the heat sink, the power terminals are prevented from contacting with oxygen, thereby preventing oxidation of the power terminals. In the power module packaging process, the deoxidation step is saved and the reliability of the product is improved.

[0021] Furthermore, a first guide positioning member and a second guide positioning member are provided to provide guidance when the transfer member cooperates with the cooling table, thereby reducing the difficulty of assembly and improving the assembly accuracy, so that the positioning fixture can be smoothly placed in the accommodating groove. In addition, the first guide positioning member and the second guide positioning member can cooperate to limit the movement of the transfer member along the thickness direction toward the cooling table and limit the movement of the transfer member along its length and width directions relative to the cooling table, thereby keeping the transfer member and the cooling table relatively fixed, which helps to keep the cooling space stable, thereby preventing oxygen from entering the cooling space.

[0022] Furthermore, a limiting member is provided to limit the positioning fixture, so that the positioning fixture, the power module and the heat sink remain stable and do not move during the cooling process.

[0023] Furthermore, an oxygen content tester is provided to detect the oxygen concentration in the cooling space so as to control the delivery amount of the protective gas system, which can better reduce the proportion of oxygen in the cooling space, thereby reducing the probability of oxidation of the power terminal and facilitating use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings, in which:

[0025] Figure 1 This is a schematic diagram of the structure of the transfer member of the utility model Figure 1 ;

[0026] Figure 2 This is a schematic diagram of the structure of the transfer member of the utility model Figure 2 ;

[0027] Figure 3 It is a left side view of the transfer member of the utility model;

[0028] Figure 4 yes Figure 3 Sectional view in the AA direction;

[0029] Figure 5 It is a schematic diagram of the exploded structure of the anti-oxidation and temperature-reducing device of the utility model;

[0030] Figure 6It is a three-dimensional structural schematic diagram of the anti-oxidation and temperature reduction device of the utility model;

[0031] Figure 7 It is a left side view of the anti-oxidation and cooling device of the utility model;

[0032] Figure 8 yes Figure 7 Cross-sectional view in the BB direction;

[0033] Fig. 9 yes Figure 7 Cross-sectional view in CC direction;

[0034] Fig.10 It is a three-dimensional structural schematic diagram of the cooling platform of the utility model.

[0035] Reference numerals list :

[0036] 1. Transfer member; 11. Transfer plate; 111. Accommodating chamber; 112. First air inlet connector; 113. First air channel; 114. First air outlet; 115. Second guide positioning member; 12. Clamping member; 121. First clamping member; 122. Second clamping member; 123. Driving member;

[0037] 2. Cooling table; 21. Receiving tank; 22. Liquid flow channel; 23. Liquid inlet; 24. Liquid outlet; 25. Second air inlet connector; 26. Second air channel; 27. Second air outlet; 28. First guide positioning member; 29. ​​Limiting member; 291. First limiting protrusion; 292. Second limiting protrusion; 293. Third limiting protrusion; 294. Fourth limiting protrusion;

[0038] 3. The first gap. DETAILED DESCRIPTION

[0039] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0040] It should be noted that in the description of the present invention, the terms "above", "inside", "outside" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", "third" and "fourth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0041] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "set", "install", and "connect" 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 direct connection, or an indirect connection through other components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] Based on the problem pointed out in the background technology that after the existing power module and the heat sink are reflow-soldered, during the process of transferring out of the reflow furnace and during the cooling process, the high-temperature power terminals on the power module are easily oxidized after contacting with oxygen, thereby affecting the reliability of the product. The utility model provides a transfer part and an anti-oxidation cooling device for a power module to solve the above technical problems.

[0043] Specifically, the transfer part of the utility model is used to remove the power module and the heat sink together with the positioning fixture for positioning the power module and the heat sink from the reflow furnace so as to transfer them to the cooling module for cooling, wherein the clamping member can clamp and fix the positioning fixture in the accommodating cavity, and at the same time, during the transfer process, the protective gas system continuously introduces protective gas (for example, nitrogen, helium or carbon dioxide) into the first gas channel through the first gas inlet connector, and the protective gas enters the accommodating cavity through the first gas outlet, so that the power terminals of the power module are in the protective gas environment, and the protective gas can press out the air, thereby preventing the power terminals from contacting with oxygen and preventing the power terminals from oxidizing during the transfer process.

[0044] Specifically, after the cooling platform of the anti-oxidation cooling device of the utility model is docked with the transfer part, the clamping component is released, and the positioning fixture, the power module and the heat sink are placed in the receiving groove of the cooling platform, and the receiving groove and the receiving cavity form a relatively closed cooling space. With the input of protective gas, it is possible to better prevent oxygen from entering the cooling space, so that the power module and the heat sink are cooled in an oxygen-free environment, which can prevent the power terminal from being oxidized and is convenient to use.

[0045] For details, please also refer to Figures 1 to 4 The transfer member 1 of the present invention comprises a transfer plate 11 and a clamping member 12 mounted on the transfer plate 11 .

[0046] Among them, the transfer plate 11 is provided with a accommodating cavity 111 with an opening on one side, and the accommodating cavity 111 is used to accommodate a positioning fixture for limiting the power module and the heat sink. The accommodating cavity 111 can accommodate the positioning fixture, so as to accommodate the power module and the heat sink at the same time. The clamping member 12 is configured to clamp and fix the positioning fixture to lock the positioning fixture in the clamping cavity. The clamping member 12 fixes and clamps the positioning fixture, which facilitates the removal of the positioning fixture, the power module and the heat sink from the reflow furnace and the transfer.

[0047] The transfer plate 11 is provided with a first air inlet connector 112, and the transfer plate 11 is also provided with a first gas channel 113 connected to the first air inlet connector 112. A plurality of first air outlet holes 114 are provided on the cavity wall of the accommodating cavity 111, and the first gas channel 113 is connected to the accommodating cavity 111 through the first air outlet holes 114. The first air inlet connector 112 can be connected to the protective gas system. The protective gas system can sequentially introduce protective gas into the accommodating cavity 111 through the first air inlet connector 112, the first gas channel 113 and the first air holes, so that the transfer part 1 can prevent the power terminal from contacting with oxygen during the process of transferring the positioning fixture, the power module and the heat sink, thereby preventing the power terminal from being oxidized. In the power module packaging process, the deoxidation process is saved and the reliability of the product is improved.

[0048] The transfer member 1 of the utility model includes a transfer plate 11 and a clamping member 12. The transfer plate 11 is provided with a accommodating cavity 111. The clamping member 12 can clamp and fix the positioning fixture to lock it in the accommodating cavity 111, so as to facilitate the transfer member 1 to remove and transfer the positioning fixture that carries and limits the power module and the heat sink in the reflow furnace. In addition, the transfer plate 11 is provided with a first gas channel 113 and a first air inlet connector 112. The first gas channel 113 is connected to the accommodating cavity 111 through a first air outlet 114. The first air inlet connector 112 can be connected to a protective gas system so that the protective gas system can fill the accommodating cavity 111 with protective gas (for example: nitrogen, helium, etc.), thereby reducing the oxygen content in the accommodating cavity 111. During the transfer process, the power terminals are protected from oxidation, which is convenient for use.

[0049] It should be noted that the present invention does not impose any restrictions on the specific type of shielding gas, as long as the shielding gas is not oxygen. In practical applications, those skilled in the art can set the specific type of shielding gas according to actual needs. For example, the shielding gas can be nitrogen, helium or carbon dioxide, etc. Such adjustments and changes to the specific type of shielding gas do not deviate from the basic principles of the present invention and should be limited within the scope of protection of the present invention.

[0050] Preferably, the protective gas system is a nitrogen system, which has low cost and is easy to use.

[0051] It should also be noted that the present invention does not impose any restrictions on the specific structure of the first gas channel 113. In practical applications, those skilled in the art can set the structure of the first gas channel 113 according to actual needs. For example, the first gas channel 113 can be set as a cavity, or the first gas channel 113 can be set as a tubular channel, etc. Such adjustments and changes to the specific structure of the first gas channel 113 do not deviate from the basic principles of the present invention and should be limited within the scope of protection of the present invention.

[0052] It should also be noted that the present invention does not impose any restrictions on the number of the first air inlet connectors 112. In practical applications, those skilled in the art can set the specific number of the first air inlet connectors 112 according to actual needs. For example, the number of the first air inlet connectors 112 is one, or the number of the first air inlet connectors 112 is changed to two, etc. Such adjustments and changes to the number of the first air inlet connectors 112 do not deviate from the basic principles of the present invention and should be limited within the protection scope of the present invention.

[0053] Preferably, please continue to see Figure 2 The clamping member 12 includes a first clamping member 121 , a second clamping member 122 and a driving member 123 .

[0054] Among them, the first clamping member 121 and the second clamping member 122 are located in the accommodating cavity 111, and the first clamping member 121 and the second clamping member 122 are arranged opposite to each other, the first clamping member 121 is fixedly connected to the transfer plate 11, the second clamping member 122 is connected to the transfer plate 11, and can move toward and away from the first clamping member 121 relative to the transfer plate 11, the driving member 123 is installed on the transfer plate 11 and is located on the outside of the accommodating cavity 111, the driving member 123 is connected to the second clamping member 122, and the driving member 123 is configured to drive the second clamping member 122 to move.

[0055] The clamping member 12 is provided with a first clamping member 121, a second clamping member 122 and a driving member 123, and its structure is simple and convenient for assembly and use. When in use, when the positioning fixture needs to be fixed and clamped, the driving member 123 drives the second clamping member 122 to move toward the first clamping member 121, so that the first clamping member 121 and the second clamping member 122 dock to fix and clamp the positioning fixture, and at this time, it is convenient to transfer the positioning fixture, the power module and the heat sink at the same time; when the positioning fixture needs to be removed, the driving member 123 drives the second clamping member 122 to move away from the first clamping member 121, so that the positioning fixture can be separated from the transfer member 1.

[0056] In one embodiment, the driving member 123 is a manual locking handle.

[0057] In another embodiment, the driving member 123 is an electric push rod.

[0058] In yet another embodiment, the driving member 123 is a cylinder.

[0059] It should be noted that the present invention does not impose any restrictions on the specific structure of the driving member 123, as long as the driving member 123 can drive the second clamping member 122 to move toward and away from the first clamping member 121. In practical applications, those skilled in the art can set the specific structure of the driving member 123 according to actual needs. The specific implementation form of the driving member 123 in the above specific implementation manner shall not limit the protection scope of the present invention.

[0060] In addition, the utility model also provides an anti-oxidation and temperature-reducing device, which includes the transfer member 1 mentioned above.

[0061] For details, please also refer to Figures 5 to 10 The anti-oxidation cooling device of the utility model comprises a cooling platform 2 and the above-mentioned transfer member 1. The transfer member 1 is used to take out the positioning fixture, the power module and the heat sink from the reflow furnace and transfer them.

[0062] The cooling platform 2 can carry the transfer part 1 and can receive the positioning fixture. The cooling platform 2 is provided with a receiving groove 21 for receiving the positioning fixture on the surface. When the transfer part 1 is placed on the cooling platform 2, the cooling platform 2 can block the opening of the receiving cavity 111. After the transfer part 1 is placed on the cooling platform 2, the clamping member can be loosened to place the positioning fixture, the power module and the heat sink into the receiving groove 21. The cooling platform 2 blocks the opening of the receiving cavity 111, so that the receiving groove 21 and the receiving cavity 111 form a relatively closed cooling space. The protective gas system continuously introduces protective gas, which can prevent oxygen from entering the cooling space, thereby ensuring that the power module will not be oxidized during the cooling process, thereby improving the reliability of the product.

[0063] The anti-oxidation cooling device of the utility model comprises a transfer member 1 and a cooling platform 2. The transfer member 1 can take out the positioning fixture, the power module and the heat sink from the reflow furnace for transfer and prevent the power terminal from being oxidized during the transfer process. The cooling platform 2 and the transfer member 1 can form a relatively closed cooling space after cooperation, and the protective gas system continuously introduces protective gas (non-oxygen) into the cooling space through the first air outlet 114, thereby ensuring that the power terminal will not be oxidized during the cooling process, thereby improving the reliability of the product.

[0064] Preferably, please continue to see Fig. 9 A liquid flow channel 22 is also provided in the cooling platform 2. A liquid inlet 23 and a liquid outlet 24 communicating with the liquid flow channel 22 are provided on the side wall of the cooling platform 2. The liquid inlet 23 and the liquid outlet 24 can be communicated with the liquid cooling system through pipelines.

[0065] A liquid flow channel 22 is arranged in the cooling platform 2, and a liquid inlet 23 and a liquid outlet 24 are arranged on the cooling platform 2, so that the liquid cooling system can be connected with the liquid flow channel 22 through the liquid inlet 23 and the liquid outlet 24, and cold fluid is transported into the liquid flow channel 22 to cool the cooling platform 2, so that the cooling platform 2 can exchange heat with the positioning fixture, the power module and the heat sink, thereby improving the cooling speed of the positioning fixture, the power module and the heat sink, thereby shortening the cooling time and improving the cooling efficiency.

[0066] Preferably, please continue to see Figure 8 A second air inlet connector 25 is provided on the cooling platform 2, a second gas channel 26 connected to the second air inlet connector 25 is provided in the cooling platform 2, a plurality of second air outlet holes 27 are provided on the groove wall of the containing groove 21, the second gas channel 26 is connected to the containing groove 21 through the second air outlet holes 27, and the second air inlet connector 25 can be connected to the protective gas system.

[0067] A second gas channel 26 is arranged in the cooling platform 2, and a second gas inlet connector 25 and a second gas outlet hole 27 are arranged on the cooling platform 2. The protective gas system can sequentially introduce protective gas into the containing groove 21 through the second gas inlet connector 25, the second gas channel 26 and the second gas hole so that the protective gas fills the cooling space. In the process of cooling the positioning fixture, the power module and the heat sink, the power terminals are prevented from contacting with oxygen, thereby preventing the power terminals from being oxidized. In the power module packaging process, the deoxidation process is saved and the reliability of the product is improved.

[0068] It should be noted that the present invention does not impose any restrictions on the specific structure of the second gas channel 26. In practical applications, those skilled in the art can set the structure of the second gas channel 26 according to actual needs. For example, the second gas channel 26 can be set as a cavity, or the second gas channel 26 can be set as a tubular channel, etc. Such adjustments and changes to the specific structure of the second gas channel 26 do not deviate from the basic principles of the present invention and should be limited within the scope of protection of the present invention.

[0069] It should also be noted that the present invention does not impose any restrictions on the number of the second air inlet connectors 25. In practical applications, those skilled in the art can set the specific number of the second air inlet connectors 25 according to actual needs. For example, the number of the second air inlet connectors 25 is one, or the number of the second air inlet connectors 25 is changed to two, etc. Such adjustments and changes to the number of the second air inlet connectors 25 do not deviate from the basic principles of the present invention and should be limited within the protection scope of the present invention.

[0070] Preferably, please also refer to Figure 2 , Figure 3, Figure 5 and Fig.10 A first guide positioning member 28 is provided on the cooling platform 2, and a second guide positioning member 115 matched with the first guide positioning member 28 is provided on the transfer plate 11. After the first guide positioning member 28 cooperates with the second guide positioning member 115, it can limit the transfer member 1 from moving along its thickness direction toward the cooling platform 2 and limit the transfer member 1 from moving along its length direction and width direction relative to the cooling platform 2.

[0071] A first guide positioning member 28 and a second guide positioning member 115 are provided to provide guidance when the transfer member 1 cooperates with the cooling table 2, thereby reducing the difficulty of assembly and improving the assembly accuracy, so that the positioning fixture can be smoothly placed in the accommodating groove 21. In addition, after the first guide positioning member 28 cooperates with the second guide positioning member 115, it can limit the movement of the transfer member 1 toward the cooling table 2 along the thickness direction and limit the movement of the transfer member 1 relative to the cooling table 2 along its length and width directions, thereby keeping the transfer member 1 and the cooling table 2 relatively fixed, which helps to keep the cooling space stable, thereby preventing oxygen from entering the cooling space.

[0072] In one embodiment, the first guide positioning member 28 is a positioning hole, and the second guide positioning member 115 is a guide column matched with the positioning hole.

[0073] In another embodiment, the second guide positioning member 115 is a positioning hole, and the first guide positioning member 28 is a guide column matched with the positioning hole.

[0074] It should be noted that the present invention does not impose any restrictions on the specific structure of the first guide positioning member 28 and the second guide positioning member 115. In practical applications, those skilled in the art can set the specific structure of the first guide positioning member 28 and the second guide positioning member 115 according to actual needs. The specific implementation form of the first guide positioning member 28 and the second guide positioning member 115 in the above specific embodiment should not limit the protection scope of the present invention.

[0075] Further preferably, the length of the guide column is greater than the depth of the positioning hole, so that when the transfer member 1 is placed on the cooling platform 2 , there is a first gap 3 between the two, so that the protective gas in the accommodating cavity 111 can be discharged through the first gap 3 .

[0076] By making the length of the guide column greater than the depth of the positioning hole, a first gap 3 can be provided between the transfer member 1 and the cooling platform 2, so that the excess protective gas in the accommodating cavity 111 can be discharged to avoid excessive pressure in the cooling space.

[0077] Preferably, see Fig.10A limiting member 29 is provided in the receiving groove 21 , and the limiting member 29 is configured to limit the movement of the positioning fixture in the receiving groove 21 relative to the cooling platform 2 along the length direction and the width direction of the receiving groove 21 .

[0078] The limiting member 29 can limit the positioning fixture, so that the positioning fixture, the power module and the heat sink can remain stable and not move during the cooling process.

[0079] Preferably, please continue to see Fig.10 The limiting member 29 includes a first limiting protrusion 291, a second limiting protrusion 292, a third limiting protrusion 293 and a fourth limiting protrusion 294 located on the side wall of the receiving groove 21; the first limiting protrusion 291 and the second limiting protrusion 292 are spaced apart along the length direction of the receiving groove 21, and the third limiting protrusion 293 and the fourth limiting protrusion 294 are spaced apart along the width direction of the receiving groove 21. When the positioning fixture is located in the receiving groove 21, the first limiting protrusion 291, the second limiting protrusion 292, the third limiting protrusion 293 and the fourth limiting protrusion 294 are all in contact with the side wall of the positioning fixture.

[0080] The limiting member 29 includes a first limiting protrusion 291 , a second limiting protrusion 292 , a third limiting protrusion 293 and a fourth limiting protrusion 294 , and has a simple structure and is convenient for production and manufacturing.

[0081] Preferably, the anti-oxidation and temperature reduction device further includes an oxygen content tester, and a detection probe of the oxygen content tester is located in the containing groove 21 or the containing cavity 111 .

[0082] Setting up an oxygen content tester can detect the oxygen concentration in the cooling space so as to control the delivery volume of the protective gas system, which can better reduce the proportion of oxygen in the cooling space, thereby reducing the probability of oxidation of the power terminals and facilitating use.

[0083] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A transfer member for a power module, characterized in that: The transfer member comprises a transfer plate and a clamping member mounted on the transfer plate. The transfer plate is provided with a receiving cavity with an opening on one side, the receiving cavity is used to receive a positioning fixture for limiting the power module and the heat sink, and the clamping member is configured to clamp and fix the positioning fixture so as to lock the positioning fixture in the clamping cavity. A first air inlet connector is provided on the transfer plate, and a first gas channel connected to the first air inlet connector is also provided in the transfer plate. A plurality of first air outlet holes are provided on the cavity wall of the accommodating cavity. The first gas channel is connected to the accommodating cavity through the first air outlet holes, and the first air inlet connector can be connected to a protective gas system.

2. The transfer member for a power module according to claim 1, characterized in that: The clamping member comprises a first clamping member, a second clamping member and a driving member, wherein the first clamping member and the second clamping member are located in the accommodating cavity and are arranged opposite to each other. The first clamping member is fixedly connected to the transfer plate, and the second clamping member is connected to the transfer plate and can move toward and away from the first clamping member relative to the transfer plate. The driving member is installed on the transfer plate and is located outside the accommodating cavity. The driving member is connected to the second clamping member. The driving member is configured to drive the second clamping member to move.

3. An anti-oxidation and cooling device, characterized in that: The anti-oxidation cooling device includes a cooling platform and a transfer piece for a power module as described in claim 1 or 2, wherein the cooling platform can carry the transfer piece and receive the positioning fixture, and a receiving groove for receiving the positioning fixture is provided on the surface of the cooling platform, and when the transfer piece is placed on the cooling platform, the cooling platform can seal the opening of the receiving cavity.

4. The anti-oxidation and temperature-reducing device according to claim 3, characterized in that: A liquid flow channel is also provided in the cooling platform, and a liquid inlet and a liquid outlet connected to the liquid flow channel are provided on the side wall of the cooling platform. The liquid inlet and the liquid outlet can be connected to the liquid cooling system through pipelines.

5. The anti-oxidation and temperature-reducing device according to claim 3, characterized in that: A second air inlet connector is provided on the cooling platform, a second gas channel connected to the second air inlet connector is provided inside the cooling platform, a plurality of second air outlet holes are provided on the groove wall of the containing groove, the second gas channel is connected to the containing groove through the second air outlet holes, and the second air inlet connector can be connected to the protective gas system.

6. The anti-oxidation and temperature-reducing device according to claim 3, characterized in that: A first guide positioning member is provided on the cooling platform, and a second guide positioning member matched with the first guide positioning member is provided on the transfer plate. After the first guide positioning member cooperates with the second guide positioning member, it can limit the transfer member from moving along its thickness direction toward the cooling platform and limit the transfer member from moving along its length direction and width direction relative to the cooling platform.

7. The anti-oxidation and temperature-reducing device according to claim 6, characterized in that: The first guide positioning member is a positioning hole, and the second guide positioning member is a guide column adapted to the positioning hole; Alternatively, the second guide positioning member is a positioning hole, and the first guide positioning member is a guide column matched with the positioning hole.

8. The anti-oxidation and temperature-reducing device according to claim 7, characterized in that: The length of the guide column is greater than the depth of the positioning hole, so that when the transfer member is placed on the cooling platform, there is a first gap between the transfer member and the cooling platform.

9. The anti-oxidation and temperature-reducing device according to claim 3, characterized in that: A limiting member is provided in the receiving groove, and the limiting member is configured to limit the movement of the positioning fixture in the receiving groove relative to the cooling platform along the length direction and the width direction of the receiving groove.

10. The anti-oxidation and temperature-reducing device according to any one of claims 3 to 9, characterized in that: The anti-oxidation and temperature reduction device also includes an oxygen content tester, and a detection probe of the oxygen content tester is located in the containing tank.

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