Large-batch IGBT testing device

Abstract

The invention discloses a large-batch IGBT testing device, which comprises a cabinet body, and a measurement and control assembly and a plurality of water control tanks arranged in the cabinet body, the measurement and control assembly comprises a substrate, a plurality of water coolers, a plurality of metal strips for transmitting current and a plurality of first installers for installing IGBTs to be tested, the water coolers are fixed on the substrate, each water cooler comprises a water cooling seat, and the water cooling seats are fixed on the substrate. The water cooling seat is provided with a water tank, the water tank is communicated with the water control tank, the first installer comprises a plurality of first installation plates, a first heat dissipation block and a first signal pin used for being electrically connected with an IGBT to be tested, the plurality of first installation plates are fixed on the water cooling seat, the upper end of the first heat dissipation block is fixedly connected with the first installation plates, and the lower end of the first heat dissipation block is fixedly connected with the first signal pin. The lower end of the first heat dissipation block extends into the water tank, the first signal pins are arranged on the periphery of the first installation plate, and the multiple first installers are connected together in series through metal strips. The device is good in heat dissipation capability, is low in cost, and can achieve the one-time mass testing of IGBTs.

Description

Technical Field

[0001] The invention relates to the field of semiconductor testing, and in particular to a large-volume IGBT testing device. Background Art

[0002] IGBT has very small driving power and fast switching speed, but large on-state voltage drop and low current density. It is a commonly used device in the industrial field and is used in large quantities. To ensure its quality, IGBT must be tested during production.

[0003] Since a large current is generally required for aging testing of IGBTs, which results in a large amount of heat generation, a small number of IGBTs are generally tested at one time in order to reduce heat dissipation.

[0004] There are also a few test devices that can test IGBTs in large quantities at one time, but they all require a large number of heat sinks and high-current input circuits. Generally, high-current circuits are composed of very thick insulation and copper and iron wires, which are expensive and costly. Summary of the invention

[0005] In order to overcome the deficiencies of the prior art, the present invention aims to provide a large-volume IGBT testing device, which has good heat dissipation capability, low cost and can realize one-time large-volume testing of IGBTs.

[0006] The purpose of the present invention is achieved by the following technical solutions:

[0007] A large-volume IGBT testing device comprises a cabinet, a measurement and control component and a plurality of water control tanks arranged in the cabinet, the measurement and control component comprising a substrate, a plurality of water coolers, a plurality of metal strips for transmitting current and a plurality of first installers for installing the IGBT to be tested, the water cooler is fixed on the substrate, the water cooler comprises a water cooling seat, a water tank is arranged on the water cooling seat, the water tank is connected to the water control tank, the first installer comprises a plurality of first mounting plates, a first heat sink and a first signal pin for electrically connecting to the IGBT to be tested, the plurality of first mounting plates are all fixed on the water cooling seat, the upper end of the first heat sink is fixedly connected to the first mounting plate, the lower end of the first heat sink extends into the water tank, the first signal pin is arranged around the first mounting plate, and the plurality of first installers are connected in series through the metal strips.

[0008] Preferably, the first installer also includes a terminal post and a limit post for limiting the IGBT to be tested, the terminal post and the limit post are both arranged around the first mounting plate, the first installer is electrically connected to the metal strip through the terminal post, and the first signal needle passes through the limit post.

[0009] Preferably, the metal strip is provided with a plurality of transfer holes, the metal strip is electrically connected to the terminal post via the transfer holes, and a plurality of metal strips are connected in series via the terminal post.

[0010] Preferably, the measurement and control component also includes a plurality of second installers, the second installers include a second mounting plate, a second heat sink and wiring terminals for electrically connecting to the IGBT to be tested, the second mounting plate is fixed on the water cooling seat, the upper end of the second heat sink is fixedly connected to the second mounting plate, the lower end of the second heat sink extends into the water tank, the wiring terminals are arranged around the second mounting plate, and the wiring terminals of the plurality of second installers are connected in series through the metal strip.

[0011] Preferably, the second installer also includes a sealing plate and a second signal pin arranged on the sealing plate, the second mounting plate is fixed to the water cooling seat through the sealing plate, the sealing plate is provided with a through hole, and the lower end of the second heat sink extends into the water tank through the through hole.

[0012] Preferably, the measurement and control component also includes a third installer, which includes a third mounting plate, a third heat sink and a terminal block for electrically connecting to the IGBT to be tested, the third mounting plate is fixed on the water cooling seat, the upper end of the third heat sink is fixedly connected to the third mounting plate, the lower end of the third heat sink extends into the water tank, the terminal block is arranged around the third mounting plate, and the terminal blocks of multiple third installers are connected in series through the metal strip.

[0013] Preferably, the water control box includes a box body, a water inlet, a water outlet, a plurality of water pipes, a flow meter and a water distributor arranged in the box body, the flow meter is connected to the water distributor, the water inlet and the water outlet are both connected to the water distributor, the water outlet is connected to the water tank through the water pipe, and a plurality of boxes are connected in series or in parallel through the water pipe.

[0014] Preferably, the water cooling seat also includes a raising plate, two inlets and outlets and a positioning column. The raising plate is arranged in the water sink. The water cooling seat is fixedly connected to the base plate through the positioning column. The two inlets and outlets are respectively connected to the two ends of the water sink. The inlet and outlet are connected to the water outlet or another water sink through the water pipe.

[0015] Preferably, the cabinet body includes a controller, an upper cabinet and a lower cabinet fixed at the lower end of the upper cabinet, the measurement and control component and the controller are both arranged in the upper cabinet, the water control tank is arranged in the lower cabinet, and the controller is connected to the first signal pin signal.

[0016] Preferably, the first signal needle is a probe, the first heat sink block is a plurality of heat sinks, and the metal strip is a copper strip.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The mass IGBT test device disclosed in the present application discloses a water control tank, a water cooler, a plurality of first mounting plates, a first heat sink, and a plurality of metal strips for transmitting current. The lower end of each first mounting plate is provided with a water cooler, which can test IGBTs in large quantities and has a good heat dissipation effect. In addition, a plurality of first mounters are connected in series through the metal strips, so that each first mounter can obtain the same large current, and there is no need to set up extra large current lines. The metal strips can also dissipate heat, reducing some heat dissipation devices, saving costs and improving heat dissipation effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of a large-volume IGBT testing device of the present invention;

[0020] Figure 2 It is a schematic diagram of the three-dimensional structure of the test assembly of the present invention;

[0021] Figure 3 It is a schematic diagram of the three-dimensional structure of the first installation device of the present invention;

[0022] Figure 4 is a schematic diagram of the three-dimensional structure of the second installer of the present invention;

[0023] Figure 5 It is a three-dimensional structural schematic diagram of the water cooler and the sealing plate of the present invention;

[0024] Figure 6 It is a schematic diagram of the three-dimensional structure of the water cooling seat of the present invention; Figure 7 is a perspective view of a water control tank of the present invention;

[0025] Figure 8 It is a schematic diagram of the three-dimensional structure of the metal strip of the present invention.

[0026] In the figure: 100, large-volume IGBT test device; 10, cabinet; 11, upper cabinet; 12, lower cabinet; 13, cabinet door; 20, test assembly; 21, substrate; 22, metal strip; 221, adapter hole; 30, first installer; 31, first mounting plate; 32, first signal pin; 33, terminal; 34, limit column; 40, second installer; 41, second mounting plate; 42, second signal pin; 43, sealing plate; 431, perforation; 44, terminal; 45, third installer; 50, water cooler; 51, water cooling seat; 511, water tank; 512, pad plate; 52, positioning column; 53, inlet and outlet; 60, water control tank; 61, cabinet; 62, water distributor; 63, flow meter; 64, water inlet; 65, water outlet. DETAILED DESCRIPTION

[0027] In order to more clearly understand the specific technical solutions, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0028] In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "lateral", "longitudinal", "horizontal", "inner", "outer", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0029] like Figure 1-Figure 3 As shown, a large-volume IGBT test device 100 disclosed in the present application includes a cabinet 10 and a measurement and control component 20 and a water control tank 60 arranged in the cabinet 10, wherein the measurement and control component 20 includes a substrate 21, a plurality of water coolers 50, a plurality of metal bars 22 for transmitting current, and a plurality of first mounters 30 for mounting the IGBT to be tested, wherein the water cooler 50 is fixed on the substrate 21, and the water cooler 50 includes a water cooling seat 51, as shown in FIG. Figure 6 The water cooling seat 51 is shown as being provided with a water tank 511, and the water tank 511 is connected to the water control tank 60. The first installer 30 includes a plurality of first mounting plates 31, a first heat sink (not shown) and a first signal pin 32 for electrically connecting to the IGBT to be tested. The plurality of first mounting plates 31 are all fixed on the water cooling seat 51, the upper end of the first heat sink is fixedly connected to the first mounting plate 31, the lower end of the first heat sink extends into the water tank 511, the first signal pin 32 is arranged around the first mounting plate 31, and the plurality of first installers 30 are connected in series through the metal strip 22.

[0030] In the above-mentioned embodiment, the mass IGBT test device disclosed in the present application discloses a water control tank 60, a water cooler 50, a first heat sink, a plurality of first mounting plates 31 and a plurality of metal strips 22 for transmitting current, and a water cooler 50 is provided at the lower end of each first mounting plate 31, which can test a large number of IGBTs at one time and has a good heat dissipation effect. In addition, a plurality of first mounters 22 are connected in series through the metal strips 22, so that each first mounter 30 can obtain the same large current, without the need for each first mounter 30 to re-set a large current line, thereby reducing the large current line, and the metal strips 22 can also dissipate heat, and can also reduce some heat dissipation devices, thereby saving costs and improving the heat dissipation effect.

[0031] Among them, the water cooler 50 can water-cool the first mounting plate 31, and multiple water control tanks 60 can achieve a large amount of heat dissipation. The water control tank 60 can control the flow of water in the water tank 511. The first heat sink is in contact with the water in the water tank 511, which is conducive to water cooling; the first signal pin 32 is used to transmit a test signal to the IGBT to be tested and output a feedback signal. The test signal can be sent by an external device or by a substrate. The metal strip 22 is used to transmit a large current or a test current to the IGBT to be tested. The first mounting plate 31 is preferably a heat conducting plate. The metal strip 22 transmits a large current to the IGBT to be tested to achieve an aging test.

[0032] like Figure 1 As shown, in a preferred embodiment, the cabinet 10 includes a controller, an upper cabinet 11 and a lower cabinet 12 fixed at the lower end of the upper cabinet 11, the measurement and control component 20 and the controller are both arranged in the upper cabinet 11, the water control tank 60 is arranged in the lower cabinet 12, and the controller is connected to the first signal needle 32 by signal. The first signal needle 32 is a probe, the first heat sink (not shown) is a plurality of heat sinks, and the metal strip 22 is a copper strip.

[0033] In the above embodiment, the upper cabinet 11 and the lower cabinet 12 are both provided with cabinet doors 13, and the controller can send a test signal to the IGBT to be tested. The water control tank 60 can also be connected to an external water tank or tap water to achieve better water circulation and heat dissipation.

[0034] like Figure 2-Figure 3 As shown, in a preferred embodiment, the first installer 30 further includes a terminal 33 and a limit post 34 for limiting the position of the IGBT to be tested, the terminal 33 and the limit post 34 are both arranged around the first mounting plate 31, the first installer 30 is electrically connected to the metal strip 22 through the terminal 33, and the first signal pin 32 passes through the limit post 34. Figure 8As shown, the metal strip 22 is provided with a plurality of transfer holes 221 , the metal strip 22 is electrically connected to the terminal post 33 via the transfer holes 221 , and a plurality of metal strips 22 are connected in series via the terminal post 33 .

[0035] In the above embodiment, a plurality of metal strips 22 are connected in series through the terminal 33, and the plurality of metal strips 22 can be connected in series to form a "long wire", which is suitable for testing a large number of IGBTs. The limit post 34 is an insulating post, which can prevent short circuits between the first signal pins 32. The terminal 33 can be provided with a screw for electrical connection with the adapter hole 221.

[0036] like Figure 4 As shown, in a preferred embodiment, the measurement and control component 20 also includes a plurality of second installers 40, the second installers 40 include a second mounting plate 41, a second signal pin 42, a sealing plate 43, a second heat sink (not shown) and a terminal 44 for electrically connecting to the IGBT to be tested, the second mounting plate 41 is fixed on the water cooling seat 51, the upper end of the second heat sink is fixedly connected to the second mounting plate 41, the lower end of the second heat sink 41 extends into the water tank 511, the terminal 44 is arranged around the second mounting plate 41, and the terminal 44 of the plurality of second installers 40 is connected in series through the metal strip 22. Figure 8 As shown, the second signal needle 42 is arranged on the sealing plate 43, the second mounting plate 41 is fixed to the water cooling seat 51 through the sealing plate 43, a through hole 431 is arranged on the sealing plate 43, and the lower end of the second heat dissipation block extends into the water tank 511 through the through hole 431.

[0037] In the above embodiment, the second mounting plate 41 can be used to mount another IGBT to be tested, the second signal pin 42 is used to transmit the test signal to the IGBT to be tested, the sealing plate 43 can seal the water tank 511, the terminal 44 is used to output the test current, the water tank 511 and the second heat sink are used to dissipate heat, and the metal strip 22 can make the input current of the IGBT to be tested on each second mounting plate 41 the same. In order to facilitate the installation of the metal strip 22, the second mounter 40 also includes a terminal 33, the terminal 33 is arranged on the terminal 44, and the adapter hole 221 on the metal strip 22 is electrically connected to the terminal 44 through the terminal 33.

[0038] In a preferred embodiment, the measurement and control component 20 also includes a third installer 45, the third installer 45 includes a third mounting plate, a third heat sink and a terminal block for electrically connecting to the IGBT to be tested, the third mounting plate is fixed on the water cooling seat 51, the upper end of the third heat sink is fixedly connected to the third mounting plate, the lower end of the third heat sink extends into the water tank 511, the terminal block is arranged around the third mounting plate, and multiple terminal blocks of the third installer 45 are connected in series through the metal strip 22.

[0039] In the above embodiment, the third mounting plate is used to mount another IGBT to be tested, the third signal pin is used to transmit the test signal to the IGBT to be tested, the junction block is used to output the test current, the water tank 511 and the third heat sink are used to dissipate heat, and the metal strip 22 can make the input current of the IGBT to be tested on each third mounting plate the same. In order to facilitate the fixing of the junction block on the third mounting plate, a junction board is also arranged around the third mounting plate, and the junction block is plugged into the junction board.

[0040] like Figure 5-Figure 7 As shown, in a preferred embodiment, the water control box 60 includes a box body 61, a water inlet 64, a water outlet 65, multiple water pipes, a flow meter 63 and a water distributor 62 arranged in the box body 61, the flow meter 63 is connected to the water distributor 50, the water inlet 64 and the water outlet 65 are both connected to the water distributor 62, the water outlet 65 is connected to the water tank 511 through the water pipe, and multiple boxes 61 are connected in series or in parallel through the water pipe. The water cooling seat 51 also includes a padding plate 512, two inlets and outlets 53 and a positioning column 52, the padding plate 512 is arranged in the water tank 511, the water cooling seat 51 is fixedly connected to the base plate 21 through the positioning column 52, the two inlets and outlets 53 are respectively connected to the two ends of the water tank 511, and the inlet and outlet 53 are connected to the water outlet 65 or another water tank 511 through the water pipe.

[0041] In the above embodiment, if Figure 7 As shown, the box 61 is used to hold water, the water inlet 64 is used to take in water, the water inlet 64 can be connected to external tap water through the water pipe, the water outlet 65 is used to discharge water, and the flow meter 63 is used to measure the flow rate. The water divider 62 can divide the water path into multiple paths, which is conducive to simultaneously inputting water flow to the multiple water cooling seats 51 to form multiple water flows, thereby cooling multiple IGBTs to be tested at the same time. For example, if the water divider 62 is a four-way water divider, the water divider 62 can simultaneously input water flow to the water cooling seats 51 on four routes to form 4N (N is a positive integer) water flows, thereby achieving cooling of a large number of IGBTs to be tested.

[0042] In addition, multiple water tanks 511 can be connected in series or in parallel, and multiple boxes 61 are connected in series through the water pipes, which is conducive to the flow of water, easier in and out of water, and reduces the nodes of water flow, thereby improving heat dissipation efficiency and saving resources. The padding plate 512 can raise the water level, so that the first heat dissipation block, the second heat dissipation block and the third heat dissipation block 53 are easier to contact with the water in the water tank 511, which is more conducive to heat dissipation. The water cooling seat 51 is fixedly connected to the substrate 21 through the positioning column 52, which can prevent the heat on the water cooling seat 51 from being dissipated to the substrate 21, and is also conducive to loading the water cooling seat 51.

[0043] In summary, the mass IGBT testing device 100 disclosed in the present application connects different types of installers in series through metal strips 22 and provides a water cooler at the lower end of the installer, which can provide a stable large current, dissipate heat well, save circuits, and save costs.

[0044] The basic principles, main features and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and the description in the specification are only to illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A large-volume IGBT test device, comprising a cabinet, a measurement and control component and a plurality of water control tanks arranged in the cabinet, characterized in that: The measurement and control component includes a substrate, multiple water coolers, multiple metal strips for transmitting current and multiple first installers for installing the IGBT to be tested, the water cooler is fixed on the substrate, the water cooler includes a water cooling seat, the water cooling seat is provided with a water tank, the water tank is connected to the water control tank, the first installer includes multiple first mounting plates, a first heat sink and a first signal pin for electrically connecting to the IGBT to be tested, multiple first mounting plates are fixed on the water cooling seat, the upper end of the first heat sink is fixedly connected to the first mounting plate, the lower end of the first heat sink extends into the water tank, the first signal pin is arranged around the first mounting plate, and multiple first installers are connected in series through the metal strips.

2. The mass-production IGBT testing device according to claim 1, characterized in that: The first installer also includes a terminal post and a limit post for limiting the IGBT to be tested, the terminal post and the limit post are both arranged around the first mounting plate, the first installer is electrically connected to the metal strip through the terminal post, and the first signal needle passes through the limit post.

3. The mass-production IGBT testing device according to claim 2, characterized in that: The metal strip is provided with a plurality of transfer holes, the metal strip is electrically connected to the binding post through the transfer holes, and a plurality of metal strips are connected in series through the binding post.

4. The mass-production IGBT testing device according to claim 1, characterized in that: The measurement and control component also includes a plurality of second installers, which include a second mounting plate, a second heat sink and wiring terminals for electrically connecting to the IGBT to be tested, the second mounting plate is fixed on the water cooling seat, the upper end of the second heat sink is fixedly connected to the second mounting plate, the lower end of the second heat sink extends into the water tank, the wiring terminals are arranged around the second mounting plate, and the wiring terminals of the plurality of second installers are connected in series through the metal strip.

5. The mass-production IGBT testing device according to claim 4, characterized in that: The second installer also includes a sealing plate and a second signal pin arranged on the sealing plate, the second mounting plate is fixed to the water cooling seat through the sealing plate, the sealing plate is provided with a through hole, and the lower end of the second heat sink extends into the water tank through the through hole.

6. The mass-production IGBT testing device according to claim 1, characterized in that: The measurement and control component also includes a third installer, which includes a third mounting plate, a third heat sink and a terminal block for electrically connecting to the IGBT to be tested. The third mounting plate is fixed on the water cooling seat, the upper end of the third heat sink is fixedly connected to the third mounting plate, the lower end of the third heat sink extends into the water tank, the terminal block is arranged around the third mounting plate, and the terminal blocks of multiple third installers are connected in series through the metal strip.

7. The mass-production IGBT testing device according to claim 1, characterized in that: The water control box includes a box body, a water inlet, a water outlet, multiple water pipes, a flow meter and a water distributor arranged in the box body, the flow meter is connected to the water distributor, the water inlet and the water outlet are both connected to the water distributor, the water outlet is connected to the water tank through the water pipe, and multiple boxes are connected in series or in parallel through the water pipe.

8. The mass-production IGBT testing device according to claim 7, characterized in that: The water cooling seat also includes a raising plate, two inlets and outlets and a positioning column. The raising plate is arranged in the water tank. The water cooling seat is fixedly connected to the base plate through the positioning column. The two inlets and outlets are respectively connected to the two ends of the water tank. The inlet and outlet are connected to the water outlet or another water tank through the water pipe.

9. The mass-production IGBT testing device according to claim 1, characterized in that: The cabinet body includes a controller, an upper cabinet and a lower cabinet fixed at the lower end of the upper cabinet, the measurement and control component and the controller are both arranged in the upper cabinet, the water control tank is arranged in the lower cabinet, and the controller is connected to the first signal pin signal.

10. The mass-production IGBT testing device according to claim 1, characterized in that: The first signal needle is a probe, the first heat sink is a plurality of heat sinks, and the metal strip is a copper strip.

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