A kiloampere level large current sensor testing device

Abstract

The application belongs to the technical field of current test, and particularly relates to a kilo-ampere-grade large-current sensor test device, which comprises a work table, and the surface of the work table is fixedly connected with an integral test rack. The kilo-ampere-grade large-current sensor test device is provided with a sensor test burning performance test device, a multi-station current supply device and a current positive and negative switching control mechanism. In use, the gold finger body is driven to move and contact the test product by the lifting contact air cylinder, two conductive insertion strips are driven to be inserted into the current sensors on the six test carriers by the current control air cylinder, and are connected to be electrified, and the first power connection air cylinder, the second power connection air cylinder, the third power connection air cylinder and the fourth power connection air cylinder are automatically switched to control the positive and negative poles of the current, so that the problem that the existing large current cannot be directly tested, the test efficiency is low, and the calculation accuracy is often greatly deviated is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of current test, in particular to a kind of kiloampere level large current sensor testing device. BACKGROUND

[0002] Electromagnetics is called the electric quantity through the cross section of conductor in unit time called current intensity, simply called current, current symbol is I, unit is ampere (A).

[0003] Prior art, the test of large current sensor is often through the test of smaller current to calculate the function of large current, for example, prior art adopts small current control relay, and then realizes the on action of large current by the electromagnetic iron of relay energization attraction, cannot directly test large current, because in the control mode of this small current control large current, not only need additional electric appliance or control electric appliance, also have very high requirement to this kind of electric appliance or control electric appliance, otherwise arc problem is prone to produce.And the current source of small current control large current is basically derived from the same power system, large current on instant, will reverse influence small current, in turn also prone to affect test action.In the process of small current control large current, need to do basic steps and time calculation, this calculation accuracy will also be affected by the mutual influence of large and small current in the same power system, so a kiloampere level large current sensor testing device is needed. SUMMARY

[0004] Based on the technical problem that existing large current cannot be directly tested, not only test efficiency is low, and calculation accuracy is often large deviation, the present application provides a kind of kiloampere level large current sensor testing device.

[0005] The kiloampere level large current sensor testing device provided by the present application, including work desk, the surface of the work desk is fixedly connected with the whole test rack, the surface of the whole test rack is fixedly installed with computer display;

[0006] The upper surface of the work desk is fixedly installed with the burning performance test device for sensor test, the burning performance test device includes burning test tool, and the burning test tool is fixedly connected with the upper surface of the work desk;

[0007] The upper surface of the work desk is fixedly installed with the multi-station current supply device for sensor test, and the multi-station current supply device includes support carrier, which is fixedly installed on the upper surface of the work desk;

[0008] The inside of the workbench is provided with a current positive and negative switching control mechanism for sensor testing, which comprises a first electrically connected cylinder, a second electrically connected cylinder, a third electrically connected cylinder and a fourth electrically connected cylinder, which are all fixedly installed on the inner wall of the workbench.

[0009] The inside of the workbench is provided with a heat dissipation cooling circulation mechanism for sensor testing, which comprises a circulating cooling pump fixedly installed on the inner wall of the workbench.

[0010] Preferably, the surface of the burning test tool is fixedly installed with burners, and a plurality of burners are symmetrically distributed around the axis of the burning test tool.

[0011] The surface of the burning test tool is fixedly installed with a lifting contact cylinder, which comprises a lifting contact rod, one end of which is fixedly connected with a gold finger contact tool, and the surface of the gold finger contact tool is L-shaped.

[0012] Preferably, the surface of the burning test tool is fixedly connected with guide rails, two of which are symmetrically distributed around the axis of the burning test tool, the surface of the gold finger contact tool is fixedly connected with guide blocks, four of which are symmetrically distributed around the axis of the gold finger contact tool, and the surface of the guide block is slidingly connected with the surface of the guide rail.

[0013] Preferably, the surface of the burning test tool is fixedly connected with bumper mounting plates, four of which are symmetrically distributed around the axis of the burning test tool, the surface of the bumper mounting plate is fixedly installed with a protective bumper, one end of the protective bumper is fixedly connected with a bumper contact block.

[0014] The surface of the gold finger contact tool is fixedly connected with a bumper baffle, two of which are symmetrically distributed around the axis of the gold finger contact tool.

[0015] Preferably, the surface of the gold finger contact tool is fixedly installed with heat dissipation fans, three of which are evenly distributed on the surface of the gold finger contact tool.

[0016] Preferably, the surface of the gold finger contact tool is fixedly installed with gold finger mounting blocks, six of which are symmetrically distributed around the axis of the gold finger contact tool, the surface of the gold finger mounting block is inserted with a gold finger body, the surface of the gold finger body is inserted with a gold finger pressing strip, and the surface of the gold finger pressing strip is fixedly connected with the surface of the gold finger mounting block by bolts.

[0017] Preferably, the upper surface of the support carrier is fixedly connected with a carrier bottom plate, the upper surface of the carrier bottom plate is fixedly connected with a test carrier, and six test carriers are symmetrically distributed around the axis of the carrier bottom plate.

[0018] The upper surface of the carrier bottom plate is fixedly connected with a guide block, and six guide blocks correspond to the six test carriers respectively.

[0019] Preferably, the upper surface of the workbench is fixedly connected with a cylinder mounting bottom plate, two cylinder mounting bottom plates are symmetrically distributed around the axis of the support carrier, the upper surface of the cylinder mounting bottom plate is fixedly connected with a cylinder mounting support plate, the surface of the cylinder mounting support plate is fixedly connected with a current control cylinder, and six current control cylinders each include a current control cylinder rod, one end of the current control cylinder rod is fixedly connected with a sliding block mounting block.

[0020] The upper surface of the cylinder mounting bottom plate is fixedly connected with a sliding block guide rail, six sliding block guide rails correspond to the six current control cylinders respectively, the surface of the sliding block mounting block is slidingly connected with the surface of the sliding block guide rail, the surface of the sliding block mounting block is fixedly connected with an insulating fixed block, the surface of the insulating fixed block is fixedly connected with a conductive insertion strip, and the conductive insertion strip is a silver-plated copper sheet.

[0021] The surface of the cylinder mounting bottom plate is fixedly connected with a buffer mounting plate, the surface of each of the four buffer mounting plates is fixedly connected with a fixed buffer, twelve fixed buffers are symmetrically distributed around the axis of the cylinder mounting bottom plate and correspond to the six conductive insertion strips.

[0022] The surface of the insulating fixed block is fixedly connected with a wiring block, six wiring blocks correspond to the six conductive insertion strips respectively, and the surface of the wiring block is fixedly connected with a conductive copper wire.

[0023] The upper surface of the workbench is fixedly connected with a gantry, two gantries are symmetrically distributed around the axis of the workbench, the inner wall of the gantry is fixedly connected with an isolation plate, the surface of the isolation plate is fixedly connected with a conductive contact plate, the surface of the conductive contact plate is in an L shape, one end of the conductive contact plate penetrates through and extends to the inner wall of the workbench, and one end of the conductive copper wire is fixedly connected with the surface of the conductive contact plate.

[0024] Preferably, the first power connection cylinder, the second power connection cylinder, the third power connection cylinder and the fourth power connection cylinder are fixedly installed on the inner wall of the workbench, the first power connection cylinder, the second power connection cylinder, the third power connection cylinder and the fourth power connection cylinder each include a first power connection cylinder rod, a second power connection cylinder rod, a third power connection cylinder rod and a fourth power connection cylinder rod, and one end of each of the first power connection cylinder rod, the second power connection cylinder rod, the third power connection cylinder rod and the fourth power connection cylinder rod is fixedly connected with a power connection sheet.

[0025] One end of the two conductive contact plates is respectively fixedly connected with a first conductive plate and a second conductive plate, the surface of the first conductive plate and the surface of the second conductive plate are both in L shape, the surface of the first conductive plate is fixedly connected with a first connecting conductive plate, and the surface of the second conductive plate is fixedly connected with a second connecting conductive plate.

[0026] The inner wall of the work table is fixedly connected with a positive electrode power supply plate and a negative electrode power supply plate, the surface of the first connecting conductive plate is in U shape, and one end of the positive electrode power supply plate corresponds to one end of the first connecting conductive plate.

[0027] The surface of the negative electrode power supply plate is in S shape, the surface of the negative electrode power supply plate is fixedly connected with a third connecting conductive plate, the surface of the third connecting conductive plate is in S shape, and one end of the third connecting conductive plate corresponds to the other end of the first connecting conductive plate.

[0028] The surface of the positive electrode power supply plate is fixedly connected with a fourth connecting conductive plate, the surface of the fourth connecting conductive plate is in S shape, one end of the second connecting conductive plate is fixedly connected with a fifth connecting conductive plate, the surface of the fifth connecting conductive plate is in U shape, one end of the fourth connecting conductive plate corresponds to one end of the fifth connecting conductive plate, the surface of the third connecting conductive plate is fixedly connected with a sixth connecting conductive plate, and one end of the sixth connecting conductive plate corresponds to the other end of the fifth connecting conductive plate.

[0029] Preferably, the surface of the carrier bottom plate is fixedly provided with heat dissipation grooves, a plurality of heat dissipation grooves are uniformly distributed on the surface of the carrier bottom plate, the inner wall of the heat dissipation groove is inserted with a heat conducting pipe, both ends of the heat conducting pipe penetrate and extend to the inner wall of the work table, both ends of the heat conducting pipe are fixedly communicated with the input end and the output end of the circulating cooling pump respectively, and the inside of the heat conducting pipe is provided with insulating cooling liquid.

[0030] The beneficial effects in the application are:

[0031] 1. The burning performance testing device, the multi-station current supply device and the current positive and negative switching control mechanism are arranged by setting sensors, in use, the gold finger body is driven to move and contact the test product by the lifting contact cylinder, two conductive strips are inserted into the current sensor on the six test carriers by the current control cylinder, and are connected to be electrified, and the first power connection cylinder, the second power connection cylinder, the third power connection cylinder and the fourth power connection cylinder are automatically switched to control the positive and negative poles of the current, thereby solving the problem that the existing technology cannot directly test large current, the test efficiency is low, and the calculation accuracy is often large.

[0032] 2. By setting the multi-station current supply device, when in use, the carrier bottom plate and the test carrier are supported by the support carrier, the signal of the current sensor is connected with the test carrier during the test, and the effect of large current test by six current sensors is achieved.

[0033] 3. By setting the cooling fan and the cooling circulation mechanism, the test carrier and the current sensor on the test carrier are air-cooled and cooled by the cooling fan during the large current test, and the insulation cooling liquid in the heat pipe is driven to flow by the circulating cooling pump, the carrier bottom plate is cooled, and the test carrier and the current sensor on the carrier bottom plate are cooled, so that the problem that large heat is generated during the large current test, and if the heat is not cooled in time, the test effect is affected and the test equipment is easily damaged is solved. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 A schematic diagram of a kilo-ampere level large current sensor test device is provided for the present application;

[0035] Figure 2 A stereogram of a workbench structure of a kilo-ampere level large current sensor test device is provided for the present application;

[0036] Figure 3 A stereogram of a burning test tool structure of a kilo-ampere level large current sensor test device is provided for the present application;

[0037] Figure 4 A stereogram of a gold finger contact tool structure of a kilo-ampere level large current sensor test device is provided for the present application;

[0038] Figure 5 A stereogram of a kilo-ampere level large current sensor test device is provided for the present application; Figure 4 An enlarged view of the structure at A;

[0039] Figure 6 A stereogram of a support carrier structure of a kilo-ampere level large current sensor test device is provided for the present application;

[0040] Figure 7 A stereogram of a cylinder mounting bottom plate structure of a kilo-ampere level large current sensor test device is provided for the present application;

[0041] Figure 8 A stereogram of a current control cylinder structure of a kilo-ampere level large current sensor test device is provided for the present application;

[0042] Figure 9 A partial sectional view of a workbench of a kilo-ampere level large current sensor test device is provided for the present application;

[0043] Figure 10 Figure 1 is a perspective view of a first power connection cylinder structure of a kiloampere level large current sensor testing device according to the present application.

[0044] In the figure: 1, workbench; 2, overall testing rack; 3, computer display; 4, burning test tool; 401, burner; 402, lifting contact cylinder; 403, lifting contact rod; 404, gold finger contact tool; 405, guide slide rail; 406, guide slide block; 407, buffer mounting plate; 408, protective buffer; 409, buffer contact block; 410, buffer baffle; 411, cooling fan; 412, gold finger mounting block; 413, gold finger body; 414, gold finger pressing strip; 5, support carrier; 501, carrier bottom plate; 502, test carrier; 503, guide block; 504, cylinder mounting bottom plate; 505, cylinder mounting support plate; 506, current control cylinder; 507, current control rod; 508, slide block mounting block; 509, slide block guide rail; 510, insulating fixing block; 511, conductive insertion strip; 512, buffer mounting plate; 513, fixed buffer; 514, wiring block; 515, conductive copper wire; 516, gantry; 517, isolation plate; 518, conductive contact plate; 6, first power connection cylinder; 7, second power connection cylinder; 8, third power connection cylinder; 9, fourth power connection cylinder; 901, power connection sheet; 902, first conductive plate; 903, second conductive plate; 904, first connecting conductive plate; 905, second connecting conductive plate; 906, positive power supply plate; 907, negative power supply plate; 908, third connecting conductive plate; 909, fourth connecting conductive plate; 910, fifth connecting conductive plate; 911, sixth connecting conductive plate; 10, circulating cooling pump; 1001, cooling groove; 1002, heat conduction pipe. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application.

[0046] REFERENCE Figures 1-10 A kiloampere level large current sensor testing device, comprising a workbench 1, the lower surface of the workbench 1 is fixedly connected with a plurality of table support feet for supporting and limiting the workbench 1, the plurality of table support feet are evenly distributed on the lower surface of the workbench 1, and the table support feet are fixedly connected with the lower surface of the workbench 1 through threads;

[0047] The lower surface of the workbench 1 is also fixedly installed with a plurality of casters for moving the workbench 1, and the plurality of casters are evenly distributed on the lower surface of the workbench 1;

[0048] Further, through the cooperation of the table supporting legs and the casters, the work table 1 is conveniently limited and supported and moved.

[0049] The upper surface of the work table 1 is fixedly connected with the whole test rack 2, the whole test rack 2 is used for installing a sealing protection plate and has the characteristics of sealing and protecting the internal equipment.

[0050] In order to prevent the operator from starting the test equipment during the test adjustment process or other personnel from approaching the equipment being tested during the test, causing a safety accident, the protection grating is fixedly installed on the surface of the whole test rack 2, further, the protection grating is also called a safety grating, that is, a photoelectric safety protection device, also called a safety protector, a punch protector, an infrared safety protection device, etc., generally, the safety grating exists in pairs and is divided into a transmitting end and a receiving end, which is a kind of photoelectric equipment for avoiding personnel from approaching the mobile machinery and can avoid personnel casualties.

[0051] In order to intuitively and conveniently display and record the test process and results, the computer display 3 is fixedly installed on the surface of the whole test rack 2, the computer is fixedly installed in the work table 1 and electrically connected with the computer display 3, in order to quickly test and collect data of the Hall current sensor, the DAQ970A data acquisition instrument, the micro-ohmmeter and the USB low-speed data acquisition card are fixedly installed in the work table 1, in order to provide electric energy for the DAQ970A data acquisition instrument, the micro-ohmmeter and the USB low-speed data acquisition card, the programmable power supply is fixedly installed in the work table 1 and electrically connected with the DAQ970A data acquisition instrument, the micro-ohmmeter and the USB low-speed data acquisition card;

[0052] The upper surface of the work table 1 is fixedly installed with a burning performance test device, the burning performance test device comprises a burning test tool 4, the burning test tool 4 is fixedly connected with the upper surface of the work table 1, the surface of the burning test tool 4 is fixedly installed with burners 401, and the burners 401 are symmetrically distributed around the axis of the burning test tool 4.

[0053] The surface of the burning test tool 4 is fixedly installed with a lifting contact air cylinder 402, the lifting contact air cylinder 402 comprises a lifting contact air rod 403, one end of the lifting contact air rod 403 is fixedly connected with a golden finger contact tool 404, and the surface of the golden finger contact tool 404 is in an L shape.

[0054] The surface of the burn test tool 4 is fixedly connected with guide rails 405, and the two guide rails 405 are symmetrically distributed with the axis of the burn test tool 4 as the center. The surface of the gold finger contact tool 404 is fixedly connected with guide blocks 406, and the four guide blocks 406 are symmetrically distributed with the axis of the gold finger contact tool 404 as the center. The surface of the guide block 406 is slidably connected with the surface of the guide rail 405.

[0055] The surface of the burn test tool 4 is fixedly connected with bumper mounting plates 407, and the four bumper mounting plates 407 are symmetrically distributed with the axis of the burn test tool 4 as the center. The surface of the bumper mounting plate 407 is fixedly installed with a protective bumper 408, and one end of the protective bumper 408 is fixedly connected with a buffer contact block 409.

[0056] The surface of the gold finger contact tool 404 is fixedly connected with a buffer baffle 410, and the two buffer baffles 410 are symmetrically distributed with the axis of the gold finger contact tool 404 as the center.

[0057] Further, in order to limit the movement stroke of the gold finger contact tool 404 driven by the lifting contact cylinder 402, a first limit sensor is fixedly installed on the surface of the burn test tool 4, and the two first limit sensors are electrically connected with the lifting contact cylinder 402 through wires. The surface of the gold finger contact tool 404 is fixedly connected with a first sensing contact piece, and the surface of the first sensing contact piece is in the shape of L.

[0058] In order to dissipate the heat generated during the test, a cooling fan 411 is fixedly installed on the surface of the gold finger contact tool 404, and the three cooling fans 411 are uniformly distributed on the surface of the gold finger contact tool 404.

[0059] The surface of the gold finger contact tool 404 is fixedly installed with gold finger mounting blocks 412, and the six gold finger mounting blocks 412 are symmetrically distributed with the axis of the gold finger contact tool 404 as the center. The surface of the gold finger mounting block 412 is inserted with a gold finger body 413, the surface of the gold finger body 413 is inserted with a gold finger pressing strip 414, and the surface of the gold finger pressing strip 414 is fixedly connected with the surface of the gold finger mounting block 412 through bolts.

[0060] The surface of the gold finger contact tool 404 is fixedly connected with upper stop blocks, and the six upper stop blocks correspond to the six gold finger bodies 413 respectively. The surface of the upper stop block is in the shape of a circular ring, the surface of the upper stop block is fixedly inserted with a pressing column, one end of the pressing column is slidably inserted with a lower stop block, the surface of the pressing column is sleeved with a spring, and the two ends of the spring are fixedly connected with the lower surface of the upper stop block and the upper surface of the lower stop block respectively.

[0061] In order to provide the test with the carrier and the current, a multi-station current supply device is fixedly connected to the upper surface of the workbench 1, the multi-station current supply device comprises a support carrier 5 fixedly installed on the upper surface of the workbench 1, the upper surface of the support carrier 5 is fixedly connected with a carrier bottom plate 501, the upper surface of the carrier bottom plate 501 is fixedly connected with six test carriers 502 which are symmetrically distributed around the axis of the carrier bottom plate 501.

[0062] In order to realize the smooth connection of the test current and the test product, six guide blocks 503 are fixedly connected to the upper surface of the carrier bottom plate 501, and the six guide blocks 503 correspond to the six test carriers 502 respectively.

[0063] In order to realize the connection and disconnection of the test current, two cylinder installation bottom plates 504 are fixedly connected to the upper surface of the workbench 1, the two cylinder installation bottom plates 504 are symmetrically distributed around the axis of the support carrier 5, the upper surface of the cylinder installation bottom plate 504 is fixedly connected with a cylinder installation support plate 505, the surface of the cylinder installation support plate 505 is fixedly installed with a current control cylinder 506, the six current control cylinders 506 each comprise a current control cylinder rod 507, one end of the current control cylinder rod 507 is fixedly connected with a sliding block installation block 508.

[0064] The upper surface of the cylinder installation bottom plate 504 is fixedly connected with six sliding block guide rails 509, the six sliding block guide rails 509 correspond to the six current control cylinders 506 respectively, the surface of the sliding block installation block 508 is slidingly connected with the surface of the sliding block guide rail 509, the surface of the sliding block installation block 508 is fixedly connected with an insulating fixed block 510, the surface of the insulating fixed block 510 is fixedly connected with a conductive insertion strip 511, and the conductive insertion strip 511 is a silver-plated copper sheet.

[0065] Further, the silver-plated copper sheet 511 has the characteristics of smooth surface, good conductivity and small heat generation.

[0066] The surface of the cylinder installation bottom plate 504 is fixedly connected with four buffer installation plates 512, the surface of each of the four buffer installation plates 512 is fixedly installed with a fixed buffer 513, the twelve fixed buffers 513 are symmetrically distributed around the axis of the cylinder installation bottom plate 504 and correspond to the six conductive insertion strips 511.

[0067] The surface of the insulating fixed block 510 is fixedly connected with six wire blocks 514, the six wire blocks 514 correspond to the six conductive insertion strips 511 respectively, the surface of the wire block 514 is fixedly connected with a conductive copper wire 515 Figure 2 the left conductive copper wire 515 and Figure 9 the right conductive copper wire 515 are not shown);

[0068] In order to realize the stroke limiting control of the current control cylinder 506, the surface of the cylinder mounting base plate 504 and the surface of the buffer mounting plate 512 are fixedly connected with a sensor mounting plate, and the surface of the sensor mounting plate is fixedly installed with a second limiting sensor, and the twelve second limiting sensors correspond to the twelve fixed buffers 513 respectively. The surface of the wiring block 514 and the surface of the insulating fixed block 510 are fixedly connected with a second sensing contact piece, and the twelve second sensing contact pieces correspond to the twelve second limiting sensors respectively.

[0069] The upper surface of the workbench 1 is fixedly installed with a gantry 516, and the two gantries 516 are symmetrically distributed with the axis of the workbench 1 as the center. The inner wall of the gantry 516 is fixedly connected with a isolation plate 517, the surface of the isolation plate 517 is fixedly connected with a conductive contact plate 518, the surface of the conductive contact plate 518 is L-shaped, one end of the conductive contact plate 518 extends through the inner wall of the workbench 1, and one end of the conductive copper wire 515 is fixedly connected with the surface of the conductive contact plate 518.

[0070] In order to realize the current positive and negative switching control of the Hall current sensor test, a current positive and negative switching control mechanism is fixedly installed on the inner wall of the workbench 1, which includes a first electrically connected cylinder 6, a second electrically connected cylinder 7, a third electrically connected cylinder 8 and a fourth electrically connected cylinder 9. The first electrically connected cylinder 6, the second electrically connected cylinder 7, the third electrically connected cylinder 8 and the fourth electrically connected cylinder 9 are all fixedly installed on the inner wall of the workbench 1. The first electrically connected cylinder 6, the second electrically connected cylinder 7, the third electrically connected cylinder 8 and the fourth electrically connected cylinder 9 respectively include a first electrically connected rod, a second electrically connected rod, a third electrically connected rod and a fourth electrically connected rod. One end of the first electrically connected rod, the second electrically connected rod, the third electrically connected rod and the fourth electrically connected rod is fixedly connected with an electrically connected piece 901.

[0071] One end of the two conductive contact plates 518 is fixedly connected with a first conductive plate 902 and a second conductive plate 903 respectively. The surface of the first conductive plate 902 and the surface of the second conductive plate 903 are both L-shaped. The surface of the first conductive plate 902 is fixedly connected with a first connecting conductive plate 904, and the surface of the second conductive plate 903 is fixedly connected with a second connecting conductive plate 905.

[0072] The inner wall of the workbench 1 is fixedly connected with a positive electrode power supply plate 906 and a negative electrode power supply plate 907 respectively. The surface of the first connecting conductive plate 904 is U-shaped, and one end of the positive electrode power supply plate 906 corresponds to one end of the first connecting conductive plate 904.

[0073] The surface of the negative electrode power supply plate 907 is S-shaped, and the surface of the negative electrode power supply plate 907 is fixedly connected with a third connecting conductive plate 908. The surface of the third connecting conductive plate 908 is S-shaped, and one end of the third connecting conductive plate 908 corresponds to the other end of the first connecting conductive plate 904.

[0074] One end of the positive power supply plate 906 and one end of the first connecting conductive plate 904 are located below the first power connection cylinder 6, and one end of the third connecting conductive plate 908 and the other end of the first connecting conductive plate 904 are located below the second power connection cylinder 7.

[0075] The surface of the positive power supply plate 906 is fixedly connected with the fourth connecting conductive plate 909, the surface of the fourth connecting conductive plate 909 is S-shaped, one end of the second connecting conductive plate 905 is fixedly connected with the fifth connecting conductive plate 910, the surface of the fifth connecting conductive plate 910 is U-shaped, one end of the fourth connecting conductive plate 909 corresponds to one end of the fifth connecting conductive plate 910, the surface of the third connecting conductive plate 908 is fixedly connected with the sixth connecting conductive plate 911, and one end of the sixth connecting conductive plate 911 corresponds to the other end of the fifth connecting conductive plate 910.

[0076] One end of the fourth connecting conductive plate 909 and one end of the fifth connecting conductive plate 910 are located below the third power connection cylinder 8, and one end of the sixth connecting conductive plate 911 and the other end of the fifth connecting conductive plate 910 are located below the fourth power connection cylinder 9.

[0077] Further, in actual test use, the first conductive plate 902, the second conductive plate 903, the first connecting conductive plate 904, the second connecting conductive plate 905, the positive power supply plate 906, the negative power supply plate 907, the third connecting conductive plate 908, the fourth connecting conductive plate 909, the fifth connecting conductive plate 910, the sixth connecting conductive plate 911, and other exposed parts can also be silver-plated copper plates, which have the characteristics of smooth surface, good conductivity, and small heat generation.

[0078] Further, when the positive and negative current switching control is performed, the first power connection cylinder 6 and the fourth power connection cylinder 9 are started to work at the same time, the first power connection rod on the first power connection cylinder 6 and the fourth power connection rod on the fourth power connection cylinder 9 are extended downward at the same time, driving the power connection sheet 901 to move downward, the power connection sheet 901 on the first power connection rod connects the first connecting conductive plate 904 with the positive power supply plate 906, the positive current passes through the positive power supply plate 906, the first connecting conductive plate 904, the first conductive plate 902, and the conductive contact plate 518 close to the side of the first power connection cylinder 6, the positive current enters the conductive insertion strip 511 close to the side of the first power connection cylinder 6, passes through the conductive insertion strip 511 to connect the Hall current sensor, then flows out to the second conductive plate 903 through the conductive contact plate 518 on the other side, and flows back to the sixth connecting conductive plate 911 through the second conductive plate 903, the second connecting conductive plate 905, the fifth connecting conductive plate 910, the power connection sheet 901 at one end of the fourth power connection rod, and the third connecting conductive plate 908, and flows back to the negative power supply plate 907.

[0079] Similarly, when the positive and negative current switching is performed, the first and fourth electrical contact rods are retracted into the first and fourth electrical contact cylinders 6 and 9, the positive electrode power plate 906 is disconnected from the first connecting conductive plate 904, the fifth connecting conductive plate 910 is disconnected from the sixth connecting conductive plate 911, and then the second and third electrical contact cylinders 7 and 8 are controlled to work;

[0080] The second and third electrical contact rods are extended, the electrical contact sheet 901 on the second electrical contact rod connects the first connecting conductive plate 904 with the third connecting conductive plate 908, and the conductive contact plate 518 close to the first electrical contact cylinder 6 is connected with the negative electrode power plate 907.

[0081] The electrical contact sheet 901 on the third electrical contact rod connects the fourth connecting conductive plate 909 with the fifth connecting conductive plate 910, and the positive electrode power plate 906 is connected with the second connecting conductive plate 905, the second conductive plate 903 and the conductive contact plate 518 away from the first electrical contact cylinder 6, completing the positive and negative switching.

[0082] By setting the multi-station current supply device, when in use, the support carrier 5 supports the carrier bottom plate 501 and the test carrier 502, and the gold finger body under test is signal connected with the current sensor for power-on test, so as to have the effect of large current test through six current sensors at the same time.

[0083] In order to realize the heat dissipation of the Hall current sensor and the carrier, a heat dissipation cooling circulation mechanism is arranged in the inside of the workbench 1, which comprises a circulating cooling pump 10 fixedly installed on the inner wall of the workbench 1.

[0084] A plurality of heat dissipation grooves 1001 are fixedly arranged on the surface of the carrier bottom plate 501 and uniformly distributed on the surface of the carrier bottom plate 501, the inner wall of the heat dissipation groove 1001 is inserted with a heat conduction pipe 1002, the two ends of the heat conduction pipe 1002 penetrate and extend to the inner wall of the workbench 1, the two ends of the heat conduction pipe 1002 are fixedly communicated with the input end and the output end of the circulating cooling pump 10 respectively, and the inside of the heat conduction pipe 1002 is provided with insulating cooling liquid.

[0085] By setting up the heat dissipation fan 411 and the heat dissipation cooling circulation mechanism, in the process of testing the large current, the test carrier 502 and the current sensor on the test carrier 502 are air-cooled and heat-dissipated by the heat dissipation fan 411, and the insulating coolant in the heat pipe 1002 is driven to flow by the circulating cooling pump 10, the carrier bottom plate 501 is heat-dissipated and cooled, and the test carrier 502 and the current sensor on the carrier bottom plate 501 are heat-dissipated and cooled, thereby solving the problem that in the process of testing the large current, a large amount of heat is generated, and if the heat dissipation and cooling cannot be performed in time, the test effect is affected, and the test equipment is easily damaged.

[0086] By setting up the sensor test burning performance test device, the multi-station current supply device and the current positive and negative switching control mechanism, in use, the gold finger body 413 is driven to move and contact the test product by the lifting contact air cylinder 402, the two conductive insertion strips 511 are inserted into the six test carriers 502 and connected to be electrified by the current control air cylinder 506, and the current positive and negative poles are automatically switched by the first power connection air cylinder 6, the second power connection air cylinder 7, the third power connection air cylinder 8 and the fourth power connection air cylinder 9, thereby solving the problem that the existing large current cannot be directly tested, the test efficiency is low, and the calculation accuracy is often greatly deviated.

[0087] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A testing device for a high-current sensor at the kiloampere level, comprising a workbench (1), characterized in that: An integrated testing frame (2) is fixedly connected to the surface of the workbench (1), and a computer monitor (3) is fixedly mounted on the surface of the integrated testing frame (2); a programming performance testing device for sensor testing is fixedly mounted on the upper surface of the workbench (1), the programming performance testing device includes a programming testing fixture (4), the programming testing fixture (4) is fixedly connected to the upper surface of the workbench (1); a multi-station current supply device for sensor testing is fixedly mounted on the upper surface of the workbench (1), the multi-station current supply device includes a support carrier (5), the support carrier (5) is fixedly mounted on the upper surface of the workbench (1); the interior of the workbench (1) is equipped with A current forward / reverse switching control mechanism for sensor testing is provided. The current forward / reverse switching control mechanism includes a first electric cylinder (6), a second electric cylinder (7), a third electric cylinder (8), and a fourth electric cylinder (9). The first electric cylinder (6), the second electric cylinder (7), the third electric cylinder (8), and the fourth electric cylinder (9) are all fixedly installed on the inner wall of the workbench (1). The workbench (1) is equipped with a heat dissipation and cooling circulation mechanism for sensor testing. The heat dissipation and cooling circulation mechanism includes a circulating cooling pump (10). The circulating cooling pump (10) is fixedly installed on the inner wall of the workbench (1). Two cylinders are fixedly connected to the upper surface of the workbench (1). The base plate (504) is symmetrically distributed with the axis of the support carrier (5) as the center. The upper surface of the cylinder mounting base plate (504) is fixed with a cylinder mounting support plate (505), and the cylinder mounting support plate (505) is located at the end of the cylinder mounting base plate (504) near the support carrier (5). Three current-controlled cylinders (506) are fixedly mounted on the surface of each cylinder mounting support plate (505), and the current-controlled cylinders (506) are located at the end of the cylinder mounting support plate (505) near the support carrier (5). Each of the six current-controlled cylinders (506) includes a current-controlled air rod (507). One end of the cylinder mounting plate (507) is fixedly connected to a slider mounting block (508); three slider guide rails (509) are fixedly connected to the upper surface of each cylinder mounting base plate (504), and the slider guide rails (509) are located in the middle of the cylinder mounting base plate (504). The six slider guide rails (509) correspond to the six current-controlled cylinders (506) respectively. The surface of the slider mounting block (508) is slidably connected to the surface of the slider guide rails (509). An insulating fixing block (510) is fixedly connected to the surface of the slider mounting block (508), and a conductive insert (511) is fixedly connected to the surface of the insulating fixing block (510). The conductive insert (511) is a silver-plated copper sheet.Each cylinder mounting base plate (504) has a buffer mounting plate (512) fixedly connected to both ends of its upper surface. Three fixed buffers (513) are fixedly mounted on the surfaces of the four buffer mounting plates (512). The twelve fixed buffers (513) are symmetrically distributed around the axis of the cylinder mounting base plate (504) and correspond to the six conductive inserts (511). A wiring block (514) is fixedly connected to the surface of the insulating fixing block (510). The six wiring blocks (514) correspond to the six conductive inserts (511) respectively. The surface of the wiring block (514) is fixedly connected to... A conductive copper wire (515) is provided; a gantry frame (516) is fixedly installed on the upper surface of the workbench (1), and two gantry frames (516) are symmetrically distributed around the axis of the workbench (1). An isolation plate (517) is fixedly connected to the inner wall of the gantry frame (516), and a conductive contact plate (518) is fixedly connected to the surface of the isolation plate (517). The surface of the conductive contact plate (518) is L-shaped, and one end of the conductive contact plate (518) penetrates and extends to the inner wall of the workbench (1). One end of the conductive copper wire (515) is fixedly connected to the surface of the conductive contact plate (518).

2. The kiloampere-level high-current sensor testing device according to claim 1, characterized in that: Multiple programmers (401) are fixedly mounted on the surface of the programming test fixture (4). The multiple programmers (401) are symmetrically distributed around the axis of the programming test fixture (4), that is, the multiple programmers (401) are divided into two groups. The two groups of programmers (401) are respectively installed on the left side wall and the right side wall of the programming test fixture (4). A lifting contact cylinder (402) is fixedly mounted on the surface of the programming test fixture (4), and the lifting contact cylinder (402) is installed on the top of the programming test fixture (4). The lifting contact cylinder (402) includes a lifting contact rod (403). One end of the lifting contact rod (403) is fixedly connected to a gold finger contact fixture (404). The surface of the gold finger contact fixture (404) is L-shaped.

3. The kiloampere-level high-current sensor testing device according to claim 2, characterized in that: Two guide rails (405) are fixedly connected to the surface of the programming test fixture (4). The two guide rails (405) are symmetrically distributed with the axis of the programming test fixture (4) as the center, and both guide rails (405) are located on the front side wall of the programming test fixture (4). Both guide rails (405) are vertically arranged. A guide slider (406) is fixedly connected to the surface of the gold finger contact fixture (404). The four guide sliders (406) are symmetrically distributed with the axis of the gold finger contact fixture (404) as the center, and the surface of the guide slider (406) is slidably connected to the surface of the guide rail (405).

4. The kiloampere-level high-current sensor testing device according to claim 3, characterized in that: Four buffer mounting plates (407) are fixedly connected to the surface of the programming test fixture (4). The four buffer mounting plates (407) are symmetrically distributed with the axis of the programming test fixture (4) as the center, and the four mounting plates (407) are distributed in pairs on the left and right sides of the programming test fixture (4). A protective buffer (408) is fixedly installed on the surface of each of the four buffer mounting plates (407). A buffer contact block (409) is fixedly connected to one end of the protective buffer (408). Two buffer baffles (410) are fixedly connected to the surface of the gold finger contact fixture (404). The two buffer baffles (410) are symmetrically distributed with the axis of the gold finger contact fixture (404) as the center, and the two buffer baffles (410) are located on both sides of the upper end of the gold finger contact fixture (404).

5. The kiloampere-level high-current sensor testing device according to claim 4, characterized in that: A cooling fan (411) is fixedly installed on the surface of the gold finger contact fixture (404), and the three cooling fans (411) are evenly distributed on the surface of the gold finger contact fixture (404).

6. The kiloampere-level high-current sensor testing device according to claim 4, characterized in that: The surface of the gold finger contact fixture (404) is fixedly mounted with six gold finger mounting blocks (412). The six gold finger mounting blocks (412) are symmetrically distributed around the axis of the gold finger contact fixture (404), and all six gold finger mounting blocks (412) are located on the lower surface of the gold finger contact fixture (404). A gold finger body (413) is inserted into the surface of the gold finger mounting block (412), and a gold finger pressure strip (414) is inserted into the surface of the gold finger body (413). The surface of the gold finger pressure strip (414) is fixedly connected to the surface of the gold finger mounting block (412) by bolts.

7. The kiloampere-level high-current sensor testing device according to claim 1, characterized in that: The upper surface of the support carrier (5) is fixedly connected to a carrier base plate (501), and the upper surface of the carrier base plate (501) is fixedly connected to a test carrier (502). The six test carriers (502) are symmetrically distributed with the axis of the carrier base plate (501) as the center. The upper surface of the carrier base plate (501) is fixedly connected to a guide block (503), and the six guide blocks (503) correspond to the six test carriers (502) respectively.

8. The kiloampere-level high-current sensor testing device according to claim 7, characterized in that: The surface of the vehicle base plate (501) is fixedly provided with heat dissipation grooves (1001), and multiple heat dissipation grooves (1001) are evenly distributed on the surface of the vehicle base plate (501). Heat conduction pipes (1002) are inserted into the inner wall of the heat dissipation grooves (1001). The two ends of the heat conduction pipes (1002) penetrate through and extend to the inner wall of the worktable (1). The two ends of the heat conduction pipes (1002) are fixedly connected to the input end and the output end of the circulating cooling pump (10), respectively. The interior of the heat conduction pipes (1002) is provided with insulating coolant.

9. The kiloampere-level high-current sensor testing device according to claim 1, characterized in that: The first electrical cylinder (6), the second electrical cylinder (7), the third electrical cylinder (8), and the fourth electrical cylinder (9) are all fixedly installed on the inner wall of the workbench (1). The first electrical cylinder (6), the second electrical cylinder (7), the third electrical cylinder (8), and the fourth electrical cylinder (9) respectively include a first electrical rod, a second electrical rod, a third electrical rod, and a fourth electrical rod. One end of the first electrical rod, the second electrical rod, the third electrical rod, and the fourth electrical rod is fixedly connected to a contact plate (901). One end of the two conductive contact plates (518) is fixedly connected to a first conductive plate (902) and a second conductive plate (903). The surface of the first conductive plate (902) and the surface of the second conductive plate (903) are fixedly connected to each other. 3) The surfaces of all are L-shaped. The first conductive plate (902) is fixedly connected to the first connecting conductive plate (904), and the second conductive plate (903) is fixedly connected to the second connecting conductive plate (905). The inner wall of the workbench (1) is fixedly connected to the positive power plate (906) and the negative power plate (907). The surface of the first connecting conductive plate (904) is U-shaped. One end of the positive power plate (906) corresponds to one end of the first connecting conductive plate (904), and the two ends of the connecting piece (901) fixed to the first connecting cylinder (6) correspond to one end of the positive power plate (906) and the first connecting conductive plate (904), respectively. The surface of the negative power plate (907) is U-shaped. The surface of the negative power plate (907) is fixedly connected to a third connecting conductive plate (908), the surface of which is S-shaped. One end of the third connecting conductive plate (908) corresponds to the other end of the first connecting conductive plate (904), and the two ends of the connecting piece (901) fixed to the second connecting cylinder (7) correspond to the other ends of the third connecting conductive plate (908) and the first connecting conductive plate (904), respectively. The surface of the positive power plate (906) is fixedly connected to a fourth connecting conductive plate (909), the surface of which is S-shaped. One end of the second connecting conductive plate (905) is fixedly connected to a fifth connecting conductive plate (910). The surface of the fifth connecting conductive plate (910) is U-shaped. One end of the fourth connecting conductive plate (909) corresponds to one end of the fifth connecting conductive plate (910), and the two ends of the contact piece (901) fixed to the third connecting electric cylinder (8) correspond to one end of the fourth connecting conductive plate (909) and the fifth connecting conductive plate (910), respectively. A sixth connecting conductive plate (911) is fixedly connected to the surface of the third connecting conductive plate (908). One end of the sixth connecting conductive plate (911) corresponds to the other end of the fifth connecting conductive plate (910), and the two ends of the contact piece (901) fixed to the fourth connecting electric cylinder (9) correspond to the other end of the sixth connecting conductive plate (911) and the fifth connecting conductive plate (910), respectively. Start the operation of the first electrical cylinder (6) and the fourth electrical cylinder (9). The contact piece (901) on the first electrical cylinder (6) connects the first connecting conductive plate (904) to the positive power board (906). The contact piece (901) on the fourth electrical cylinder (9) connects the fifth connecting conductive plate (910) to the sixth connecting conductive plate (911). When switching between positive and negative currents, the first and fourth electrical rods of the first electrical cylinder (6) and the fourth electrical cylinder (9) are retracted, and the second electrical cylinder (7) and the third electrical cylinder (8) are started. The contact plate (901) on the second electrical cylinder (7) connects the first connecting conductive plate (904) to the third connecting conductive plate (908), and the contact plate 901 on the third electrical cylinder (8) connects the fourth connecting conductive plate (909) to the fifth connecting conductive plate (910).

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