Device power test equipment operating in water cooling and air cooling combined mode

Abstract

The utility model discloses a device power test device operating in a water-cooling and air-cooling combined mode, which comprises a test platform and a water-cooling component, and can cool the test platform in the water-cooling and air-cooling combined mode, thereby being convenient to control the test temperature of a device and improving the test efficiency. The test platform and the device on the test platform are subjected to water cooling through the water cooling part, so that the temperature of the device is kept in a low-temperature environment in the test process, the temperature of the device is convenient to control, and the test result is prevented from being influenced by the too high temperature of the device; the cold air circulation channel and the circulating fan are arranged to be matched with the wind tunnel, and when air passes through the wind tunnel, the wind tunnel can perform water cooling on the passing air, so that the air temperature is reduced, the cooling effect on the test platform is improved, air cooling and water cooling are combined, and the control effect is better.

Description

Technical Field

[0001] The utility model relates to the technical field of device power testing, in particular to the technical field of device power testing equipment operating in a combined water-cooling and air-cooling manner. Background Art

[0002] With the development of components, power devices such as high-power diodes, triodes, MOS transistors, and IGBT transistors are used more and more, and are widely used in fields such as power supplies, electrical products, and electric vehicles. Due to different usage environments, the failure phenomena of this type of device will occasionally occur. Therefore, the life cycle test of power devices has been put on the agenda. During the cycle, since the power device will generate heat, it needs to be taken away by a radiator.

[0003] During the use of power devices, the power magnitude is the most important evaluation index. Existing power devices range from a few watts to several kilowatts. In order to prevent them from failing or having a low failure rate during use, it is necessary to conduct tests or aging before leaving the factory. Among them, power cycle testing is a relatively effective method.

[0004] A method for a power device during the use of a test machine is to apply voltage and current to it according to its power magnitude under appropriate conditions. Once a power device is applied with current and voltage, power is formed. For a device, heat will inevitably be generated after loading. If this heat is not dissipated by a proper method, its temperature will inevitably become too high. If it is higher than the limit temperature of the device, it may cause damage. In actual use, generally in circuit design, the limit value of the device will not be used, and it will be used at a reduced level. Therefore, under certain heat dissipation conditions, the device can be used normally to the greatest extent.

[0005] However, during the device production process, due to raw material defects or non-standard processes, some devices may have congenital defects. However, through conventional tests, their performance indicators may be normal. But during use, in certain specific situations, this defect will be exposed and cause the device to fail. Once it fails, it may cause the entire machine loaded with the device to malfunction.

[0006] To avoid the above situation, it is necessary to conduct a long-term rated power cycle test on the device before leaving the factory. During the test, defective devices will fail. This prevents potentially problematic devices from entering the market.

[0007] During the test, during the full-power test of the power device, a large amount of heat is generated. Usually, a certain method needs to be used for heat dissipation. The traditional air-cooling mode is suitable for power devices that are not too large. However, for high-power devices, the heat is huge, and the air-cooling method is too late to take away the heat, which will cause the device temperature to be uncontrollable. Summary of the Invention

[0008] The object of the present utility model is to solve the problems in the prior art, and propose a device power test equipment operating in a combined way of water cooling and air cooling, which can cool the test platform through the combined way of water cooling and air cooling, so as to facilitate the control of the device temperature.

[0009] To achieve the above object, the present utility model proposes a device power test equipment operating in a combined way of water cooling and air cooling, including a test platform, and further including a water cooling component. The water cooling component includes a chiller and a water cooling plate. The test platform is arranged on the upper side of the water cooling plate. A plurality of water cooling channels are arranged in the water cooling plate. The output end of the chiller is communicated with the input end of the water cooling channels through a pipeline, and the input end of the chiller is communicated with the output end of the water cooling channels through a pipeline;

[0010] A platform fixing surface is arranged on the upper side of the water cooling plate. The test platform is arranged on the platform fixing surface. Outer covers are arranged on both sides and the bottom of the water cooling plate. A cold air circulation channel is arranged between the outer covers and both sides and the bottom of the water cooling plate. A plurality of vertically penetrating wind holes are arranged on the water cooling plate. The lower ends of the wind holes are communicated with the cold air circulation channel, and the upper ends are exposed from the platform fixing surface. Upper extensions with a horizontal height higher than the platform fixing surface are arranged on both sides of the outer covers. Air outlets facing the platform fixing surface are arranged on the upper extensions. The cold air circulation channel is communicated with the air outlets. A circulation fan is arranged in the cold air circulation channel.

[0011] Preferably, a plurality of insertion rods adapted to the wind holes are arranged at the bottom of the test platform, and the insertion rods are connected with the wind holes in an inserted manner.

[0012] Preferably, a platform air duct is arranged in the test platform. Air duct side openings facing the air outlets and communicated with one end of the platform air duct are arranged on both sides of the test platform. The other end of the platform air duct is arranged in the insertion rod and extends out from the insertion rod.

[0013] Preferably, a diversion part for guiding the air flow towards the direction of the wind holes is further arranged at the bottom of the platform air duct.

[0014] Preferably, a plurality of caps adapted to the wind holes on the upper side of the platform fixing surface are further included. The caps are detachably connected with the wind holes. A grille for air passage is arranged in the middle of the wind holes.

[0015] Preferably, the circulation fan is arranged at the air outlet.

[0016] Advantages of the device power test equipment operating in a combined water-cooling and air-cooling manner of the present utility model: The present utility model can cool down the test platform through the combined water-cooling and air-cooling manner, facilitating the control of the device test temperature. The water-cooling component is used to cool the test platform and the devices on the test platform by water-cooling, thereby ensuring that the temperature remains in a low-temperature environment during the device test, facilitating the control of the device temperature, and avoiding the influence of the test results due to excessive temperature of the device. By setting air ducts on the water-cooling plate and arranging a cold air circulation channel and a circulation fan to cooperate with the air ducts, when the air passes through the air ducts, the air ducts can cool the passing air by water-cooling, thereby reducing the air temperature and improving the cooling effect on the test platform. The combination of air-cooling and water-cooling has a better control effect.

[0017] The features and advantages of the present utility model will be described in detail through embodiments in conjunction with the accompanying drawings. Brief Description of the Drawings

[0018] Figure 1 is the front view structural schematic diagram of the device power test equipment operating in a combined water-cooling and air-cooling manner of the present utility model.

[0019] Figure 2 is the sectional view structural schematic diagram of the test platform and the water-cooling plate of the device power test equipment operating in a combined water-cooling and air-cooling manner of the present utility model.

[0020] Figure 3 is Figure 2 the enlarged structural schematic diagram of part A in

[0021] Figure 4 is the top view structural schematic diagram of the device power test equipment operating in a combined water-cooling and air-cooling manner of the present utility model.

[0022] Wherein:

[0023] 1 - test platform; 2 - chiller; 3 - water-cooling plate; 4 - outer cover; 5 - cold air circulation channel; 6 - circulation fan; 7 - cap; 11 - platform air duct; 12 - insertion rod; 31 - water-cooling flow channel; 32 - platform fixing surface; 33 - air duct; 41 - upper extension; 42 - air outlet; 111 - air duct side port; 112 - guiding part. Detailed Embodiments

[0024] To make the purpose, technical solutions, and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below through the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the scope of the present utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessarily confusing the concepts of the present utility model.

[0025] In the description of the present utility model, it should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0026] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "center", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present utility model is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, terms such as "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless otherwise clearly and specifically defined. The meaning of "several" is one or more, unless otherwise clearly and specifically defined.

[0027] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "connected to" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations. Embodiment 1

[0028] Refer to Figures 1-4, a device power test equipment for a water-cooled and air-cooled combined operation mode of the present utility model, comprising a test platform 1 and a water-cooled component for cooling the test platform 1. The water-cooled component includes a chiller 2 and a water-cooled plate 3. The test platform 1 is arranged on the upper side of the water-cooled plate 3. A plurality of water-cooled channels 31 are arranged in the water-cooled plate 3. The output end of the chiller 2 is communicated with the input end of the water-cooled channel through a pipeline, and the input end of the chiller 2 is communicated with the output end of the water-cooled channel through a pipeline. The chiller 2 is used to provide circulating cold water. After the water is refrigerated by the chiller 2, it is transported to the water-cooled channels 31 inside the water-cooled plate 3, and then flows back to the chiller 2 through the output end of the water-cooled channels 31 for refrigeration again, so as to cool the water-cooled plate 3 by water cooling. The water-cooled plate 3 can transfer the temperature to the test platform 1 and the devices on the test platform 1, so as to ensure that the temperature remains in a low-temperature environment during the device test, facilitate temperature control of the device, and avoid the influence of the test results due to too high temperature of the device.

[0029] Refer to Figure 2 and Figure 4 , a platform fixing surface 32 is arranged on the upper side of the water-cooled plate 3. The test platform 1 is arranged on the platform fixing surface 32. Outer covers 4 are arranged on both sides and the bottom of the water-cooled plate 3. A cold air circulation channel 5 is arranged between the outer covers 4 and both sides and the bottom of the water-cooled plate 3. A plurality of vertically penetrating air holes 33 are arranged on the water-cooled plate 3. The lower ends of the air holes 33 are communicated with the cold air circulation channel 5, and the upper ends are exposed from the platform fixing surface 32. Upper extensions 41 with a horizontal height higher than the platform fixing surface 32 are arranged on both sides of the outer cover 4. Air outlets 42 facing the platform fixing surface 32 are arranged on the upper extensions 41. The cold air circulation channel 5 is communicated with the air outlets 42. A circulation fan 6 is arranged in the cold air circulation channel 5. The cooperation of the cold air circulation channel 5 and the air holes 33 on the water-cooled plate 3 can air-cool the test platform 1 and improve the cooling effect. When the air passes through the air holes 33, the air holes 33 can cool the passing air by water cooling, so as to reduce the air temperature and improve the air-cooling effect.

[0030] Preferably, in this embodiment, the air circulation flow direction is: the circulation fan 6 sends air into the cold air circulation channel 5, the cold air circulation channel 5 transports the air into the air holes 33, the air holes 33 output the air from the platform fixing surface 32, and then the input side of the circulation fan 6 sends part of the air discharged from the air holes 33 back into the cold air circulation channel 5. Embodiment 2

[0031] Refer to Figure 2, on the basis of the first embodiment, a plug rod 12 adapted to the wind tunnel 33 is provided at the bottom of the test platform 1, and the plug rod 12 is connected to the wind tunnel 33 in a plug-in manner. The test platform 1 is modularly arranged and fixed by plugging the plug rod 12, which is convenient for installation and disassembly and is convenient to select a test platform 1 with a suitable size and a suitable number according to requirements.

[0032] Refer to Figure 2 and Figure 3 , a platform air duct 11 is provided inside the test platform 1, and air duct side openings 111 facing the air outlet 42 and communicating with one end of the platform air duct 11 are provided on both sides of the test platform 1. The other end of the platform air duct 11 is arranged inside the plug rod 12 and extends out from the plug rod 12. By arranging the platform air duct 11 inside the test platform 1 and connecting it to the wind tunnel 33 through the plug rod 12, the cold air in the wind tunnel 33 can be introduced into the test platform 1, thereby improving the cooling and temperature control effects of the test platform 1 and being convenient to use.

[0033] Refer to Figure 2 , a flow guiding portion 112 for guiding the air flow towards the direction of the wind tunnel 33 is further provided at the bottom of the platform air duct 11. It improves the smoothness of air flow and reduces resistance.

[0034] Refer to Figure 2 and Figure 3 , further comprising a plurality of caps 7 cooperating with the wind tunnels 33 on the platform fixing surface 32. The caps 7 are detachably connected to the wind tunnels 33, and a grille for air passage is provided in the middle of the wind tunnels 33. The caps 7 can protect the wind tunnels 33 from foreign objects falling in, and the detachable connection of the caps 7 is convenient to select whether to set the caps 7 according to requirements.

[0035] Refer to Figure 2 , the circulation fan 6 is arranged at the air outlet 42.

[0036] Working process of the present utility model:

[0037] During the working process of the device power test equipment with a combined water cooling and air cooling operation mode of the present utility model, the device to be tested is placed on the test platform 1 for testing. The chiller 2 is used to provide circulating cold water. After the water is refrigerated by the chiller 2, it is transported to the internal water cooling flow channel 31 of the water cooling plate 3, and then flows back to the chiller 2 through the output end of the water cooling flow channel 31 for refrigeration again, thereby performing water cooling on the water cooling plate 3. The water cooling plate 3 can transfer the temperature to the test platform 1 and the device on the test platform 1. The circulation fan 6 sends air into the cold air circulation channel 5, the cold air circulation channel 5 transports the air into the wind tunnel 33, and the wind tunnel 33 outputs the air from the platform fixing surface 32 to perform air cooling on the test platform 1. Then, part of the air discharged from the wind tunnel 33 is sent back into the cold air circulation channel 5 by the input side of the circulation fan 6 for recycling again.

[0038] The standard parts used in this application document can all be purchased from the market. The specific connection methods of each part all adopt conventional means such as bolts, rivets, and welding that are mature in the prior art. The electric slide rail slider, cylinder, welding machine, electric telescopic rod, and internal components of the controller all adopt conventional models in the prior art, and their internal structures belong to the prior art structures. Workers can complete their normal operations according to the prior art manuals. Coupled with the circuit connection adopting the conventional connection method in the prior art, no specific description will be made here.

[0039] It should be noted that although the above-mentioned embodiments have been described in this article, the patent protection scope of the present utility model is not limited thereby. Therefore, based on the innovative concept of the present utility model, any changes and modifications made to the embodiments described in this article, or equivalent structural or equivalent process transformations made by using the content of the specification and drawings of the present utility model, and directly or indirectly applying the above technical solutions to other related technical fields, are all included in the patent protection scope of the present utility model.

Claims

1. A device power test device operating in a water-cooling and air-cooling combination mode, comprising a test platform (1), characterized in that: It also includes a water cooling component, the water cooling component includes a water chiller (2) and a water cooling plate (3), the test platform (1) is arranged on the upper side of the water cooling plate (3), a plurality of water cooling channels (31) are arranged in the water cooling plate (3), the output end of the water chiller (2) is connected to the input end of the water cooling channel through a pipeline, and the input end of the water chiller (2) is connected to the output end of the water cooling channel through a pipeline; A platform fixing surface (32) is provided on the upper side of the water-cooling plate (3), the test platform (1) is arranged on the platform fixing surface (32), an outer cover (4) is provided on both sides and the bottom of the water-cooling plate (3), a cold air circulation channel (5) is provided between the outer cover (4) and both sides and the bottom of the water-cooling plate (3), a plurality of wind tunnels (33) are provided on the water-cooling plate (3), the lower ends of the wind tunnels (33) are connected to the cold air circulation channel (5), and the upper ends are exposed from the platform fixing surface (32), upper extensions (41) are provided on both sides of the outer cover (4) with a horizontal height higher than the platform fixing surface (32), the upper extensions (41) are provided with air outlets (42) arranged toward the platform fixing surface (32), the cold air circulation channel (5) is connected to the air outlets (42), and a circulating fan (6) is provided in the cold air circulation channel (5).

2. The device power test equipment operating in a water-cooling and air-cooling combination mode as claimed in claim 1, characterized in that: A plurality of plug rods (12) adapted to the wind tunnel (33) are provided at the bottom of the test platform (1), and the plug rods (12) are plug-connected to the wind tunnel (33).

3. The device power test equipment operating in a water-cooling and air-cooling combination mode as claimed in claim 2, characterized in that: The test platform (1) is provided with a platform air duct (11), and air duct side openings (111) are provided on both sides of the test platform (1) and are arranged toward the air outlet (42) and communicated with one end of the platform air duct (11), and the other end of the platform air duct (11) is arranged in the insertion rod (12) and extends out from the insertion rod (12).

4. The device power test equipment operating in a water-cooling and air-cooling combination mode as claimed in claim 3, characterized in that: The bottom of the platform air duct (11) is also provided with a guide portion (112) for guiding the airflow towards the wind tunnel (33).

5. The device power test equipment operating in a water-cooling and air-cooling combination mode as claimed in claim 1, characterized in that: It also comprises a plurality of caps (7) that cooperate with the wind tunnels (33) on the platform fixing surface (32); the caps (7) are detachably connected to the wind tunnels (33); and a grille for air to pass through is provided in the middle of the caps (7).

6. The device power test equipment operating in a water-cooling and air-cooling combination mode as claimed in claim 1, characterized in that: The circulating fan (6) is arranged at the air outlet (42).

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