Batch testing device for current sensors

Abstract

The invention, which relates to the field of the current sensor detection technology, discloses a batch test apparatus for current sensors, comprising an equipment rack, a modular tool, an electrical module and a control module. The modular tool comprises a bearing frame, a positioning carrier, a test busbar and a transverse moving mechanism. The positioning carriers are matched with the current sensors, and the multiple positioning carriers are arranged side by side in the length direction of the bearing frame; the transverse moving mechanism is arranged on the bearing frame, the driving end of the transverse moving mechanism is connected to the test busbar, and the transverse moving mechanism can drive the test busbar to pass through a busbar hole of the current sensor; the test busbar is electrically connected to the electrical module, the bearing frame is connected with an output module, the output module is electrically connected to the current sensor, and the current sensor outputs a voltage performance output signal through the output module. According to the invention, the defects of tedious operation, high cost and low efficiency when a current sensor detection device detects different current sensors in the prior art are overcome.

Description

Technical Field

[0001] The invention relates to the field of current sensor detection technology, and in particular to a batch testing device for current sensors. Background Art

[0002] Current sensors are common components used to detect current, and they usually use the Hall principle to detect current. During the production of current sensors, special testing equipment is required to detect the performance output signal of the current sensor to ensure the quality of the finished product.

[0003] Traditional current sensor testing devices usually include a device body, a positioning carrier and a test busbar, and the positioning carrier and the test busbar are integrated on the device body. The current sensor is placed in the positioning carrier, and the test busbar passes through the positioning carrier and the current sensor. The test busbar is connected to the electrical module, and the electrical module transmits high-voltage current to the test busbar. The current sensor generates a Hall voltage based on the busbar current, and uses the Hall principle to detect the current flowing through the test busbar. The current sensor sends the Hall voltage signal to the processor, and the processor processes and analyzes the electrical signal to realize the detection of the current sensor voltage performance output signal.

[0004] The test device of the above-mentioned current sensor can only meet the batch testing of products with the same appearance, electrical interface and pin definition. If other current sensors are to be tested, it is necessary to replace the positioning carrier, adjust the position of the test busbar and connect the test line when switching products. The switching process is complicated and it is necessary to confirm the wiring, positioning and test contact positions one by one and confirm the stability of the measurement system, which is time-consuming and the entire replacement process is time-consuming and laborious. Summary of the invention

[0005] In order to solve the defects of the current sensor detection device in the prior art that the device needs to be significantly adjusted and the stability test needs to be re-performed when detecting different current sensors, resulting in cumbersome operation, high cost and low efficiency, the present invention provides a batch testing device for current sensors.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: The present invention provides a batch testing device for current sensors, the automatic testing device comprising an equipment rack, a modular tooling, an electrical module and a control module, the modular tooling being detachably mounted on the equipment rack, the control module being arranged on the equipment rack; the control module being detachably electrically connected to the modular tooling to control the action of the modular tooling; The modular tooling includes a load-bearing frame, a positioning carrier, a test busbar and a transverse movement mechanism; the positioning carrier is adapted to the current sensor, and a plurality of positioning carriers are arranged side by side along the length direction of the load-bearing frame; the transverse movement mechanism is arranged on the load-bearing frame, and the driving end of the transverse movement mechanism is connected to the test busbar, and the transverse movement mechanism can drive the test busbar to pass through the busbar hole of the current sensor; The test busbar is electrically connected to the electrical module, and the electrical module is used to provide a test current for the test busbar; the supporting frame is connected to an output module, and the output module is electrically connected to the current sensor, and the current sensor outputs a voltage performance output signal through the output module.

[0007] In the present scheme, the batch testing device of the current sensor carries a modular tooling through an equipment rack. The modular tooling integrates multiple positioning carriers on the carrying frame. The positioning carriers are adapted to the current sensors. A current sensor is placed on each positioning carrier. Multiple positioning carriers are arranged side by side along the length direction of the carrying frame so that the busbar holes of multiple current sensors are aligned with each other, so that the transverse movement mechanism can drive the test busbar to pass through the busbar holes of multiple current sensors. The electrical module supplies power to the test busbar, and the test current flows through the test busbar. The current sensor detects the current of the test busbar through the busbar hole and generates a voltage performance output signal. The current sensor outputs the voltage performance output signal through the output module. The voltage performance output signal output by the current sensor is calculated and analyzed, so as to know whether the current sensor can work normally and complete the detection of the current sensor.

[0008] In this solution, by integrating the positioning carrier and the test busbar on the bearing frame, when testing, it is only necessary to place the current sensor on the positioning carrier, and then install the bearing frame on the equipment frame, and electrically connect the control module to the modular tooling to control the action of the modular tooling, so that the transverse movement mechanism drives the test busbar to be inserted into the busbar hole of the current sensor, and the electrical module is electrically connected to the test busbar to supply power to the test busbar, and the current sensor is used to detect the current of the test busbar to judge the quality of the current sensor. When it is necessary to detect current sensors of different models, since the modular tooling is detachably connected to the equipment frame, it is only necessary to replace the corresponding modular tooling, and different modular tooling is loaded with different current sensors to meet the detection of different current sensors, thereby improving the batch testing capability of the current sensor and improving the compatibility of the batch testing device. At the same time, since in each modular tooling, the test busbar, positioning carrier, transverse movement mechanism and other components have been installed on the bearing frame, it is only necessary to verify the measurement system during the debugging and verification of the modular tooling and the first commissioning stage, and it is no longer necessary to confirm the stability of the measurement system each time the modular tooling is used, which simplifies user operation. When a new product current sensor needs to be tested, there is no need to redesign the entire test device. It is only necessary to design a new modular tooling for the product, thereby reducing the R&D cycle and production cost of batch testing devices for new product current sensors.

[0009] Furthermore, a plurality of busbar limiting holes are provided on the positioning carrier, the busbar limiting holes of the plurality of positioning carriers correspond one to one, and each of the busbar limiting holes is aligned with a busbar hole of the current sensor; the test busbar is inserted into the busbar limiting hole.

[0010] In this solution, the busbar limiting holes on the positioning carrier are aligned with the busbar holes of the current sensor, and the test busbar is inserted into the busbar limiting holes and then into the busbar holes, and the current sensors in multiple positioning carriers are connected in series in sequence, so that multiple current sensors can be detected at one time. The busbar limiting holes on the positioning carrier constrain the movement trajectory of the test busbar, so that the test busbar can stably pass through multiple positioning carriers and current sensors.

[0011] Furthermore, the transverse movement mechanism includes a transverse movement cylinder and a transverse movement support, the transverse movement cylinder is arranged on the supporting frame along the length direction of the supporting frame, the transverse movement support is connected to the piston rod of the transverse movement cylinder, and the test busbar is fixedly connected to the transverse movement support.

[0012] In this solution, the transverse movement mechanism drives the transverse movement support to move through the transverse movement cylinder, thereby driving the test busbar to move along the length direction of the load-bearing frame, so that the test busbar can be automatically inserted into the busbar hole of the current sensor for testing, and automatically pulled out from the busbar hole after the test is completed, thereby realizing batch automated detection of current sensors.

[0013] Furthermore, two of the test busbars and the transverse movement mechanism are provided, the two test busbars are respectively provided at the two ends of the supporting frame, the two transverse movement mechanisms are respectively connected to the two test busbars, and the two transverse movement mechanisms drive the two test busbars to move toward or away from each other.

[0014] In this solution, two test busbars and transverse movement mechanisms are provided, that is, a test busbar is provided at each end of the load-bearing frame, and each test busbar is driven to move transversely by a transverse movement mechanism, thereby facilitating the insertion and detachment of the test busbar from the busbar hole of the current sensor, while reducing the length of a single test busbar, thereby reducing the overall length of the modular tooling when the test busbar moves in the opposite direction, and facilitating user operation.

[0015] Furthermore, the modular tooling also includes a clamping cylinder, which is arranged between the two test busbars and is used to clamp and conduct the two test busbars.

[0016] In this solution, after the two test busbars move toward each other and pass through the busbar holes of multiple current sensors, the clamping cylinder presses the two test busbars together so that the test busbars will not deviate, ensuring the stability of the batch detection device during operation. At the same time, the clamping cylinder makes the two test busbars conductive, so that the test busbars are connected to form a loop. It is only necessary to electrically connect the two test busbars to the electrical module to achieve the performance output detection of all current sensors on the modular tooling. There is no need to wire the test busbars to form a connected loop, thereby reducing the wiring steps, saving costs, and facilitating the user's operation.

[0017] Furthermore, the number of the output modules is the same as the number of the positioning carriers, each of the output modules includes an output terminal and a connecting plug, each of the current sensors is provided with an output jack, the connecting plug cooperates with the output jack, the output terminal is electrically connected to the connecting plug, and the output terminal is fixed to the outside of the supporting frame and is used to be electrically connected to the control module.

[0018] In this solution, the number of output modules is the same as the number of positioning vehicles. Each output module is matched with the output jack of the current sensor through a connecting plug to achieve electrical connection with the current sensor. The voltage performance output signal output by the current sensor is transmitted to the output terminal through the connecting plug, and then output to the control module through the output terminal. The control module analyzes the voltage performance output signal to determine whether the current sensor is qualified.

[0019] Furthermore, the output module also includes a control base and a driving cylinder, the cylinder body of the driving cylinder is fixed to the supporting frame, the control base is connected to the piston rod of the driving cylinder, and the connecting plug is fixed on the control base; a plurality of avoidance holes are opened on the supporting frame, and the connecting plug passes through the avoidance holes and is aligned with the output socket.

[0020] In this solution, the output module drives the base to move by driving the cylinder, and the connecting plug is fixed on the control base and moves with the base. The connecting plug passes through the avoidance hole and is exposed outside the supporting frame to align with the output jack of the current sensor. When the piston rod of the driving cylinder moves, it drives the control base and the connecting plug to move together, so that multiple connecting plugs are synchronously inserted into the corresponding output jacks, thereby realizing automatic connection between the current sensor and the output module.

[0021] Furthermore, the supporting frame is provided with an in-place detection sensor, and the control base is connected with a limit block, and when the connecting plug is inserted into the output jack, the limit block triggers the in-place detection sensor.

[0022] In this solution, the movement of the control base drives the limit block to move. When the control base moves to the point where the connection plug is matched with the output jack, the in-position detection sensor detects the limit block, thereby automatically knowing the connection status of the current sensor and the output module.

[0023] Furthermore, the equipment rack is provided with a detection connection terminal, the detection connection terminal matches the output module, and the detection connection terminal is slidably arranged on the equipment rack and electrically connected to the control module.

[0024] In this solution, the detection connection terminal on the equipment rack can be slidably arranged so as to move the monitoring connection terminal to match the output module, thereby realizing the electrical connection between the output module and the control module.

[0025] Furthermore, the modular tooling also includes a solenoid valve group, a gas circuit quick interface is provided on the carrying frame, the gas circuit quick interface is connected to the solenoid valve group, and the transverse movement mechanism is connected to the solenoid valve group and is moved by pneumatic drive. In this solution, a gas circuit quick interface is provided on the load-bearing frame, which is quickly connected to the gas source through the gas circuit quick interface, and the gas circuit quick interface is connected to the solenoid valve group, thereby providing power for driving parts such as the transverse movement mechanism; this setting method integrates the solenoid valve group in the load-bearing frame, and realizes rapid disassembly and assembly with the gas source through the gas circuit quick interface, thereby facilitating the installation and replacement of modular tooling.

[0026] In summary, the present invention has the following beneficial effects: The batch testing device for current sensors of the present invention, when it is necessary to test current sensors of different models, since the modular tooling is detachably connected to the equipment frame, it is only necessary to replace the corresponding modular tooling, and different modular tooling is loaded with different current sensors to meet the detection of different current sensors, thereby improving the batch testing capability of current sensors and improving the compatibility of the batch testing device. At the same time, since in each modular tooling, the test busbar, positioning carrier, transverse movement mechanism and other components have been installed on the load-bearing frame, it is only necessary to verify the measurement system during the modular tooling debugging verification and the first commissioning stage, and it is no longer necessary to confirm the stability of the measurement system each time the modular tooling is used subsequently, which simplifies user operation. When it is necessary to test the current sensor of a new product, there is no need to redesign the entire test device, and it is only necessary to design a new modular tooling for this product, thereby reducing the research and development cycle and production cost of the batch testing device for the current sensor of the new product. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the three-dimensional structure of the front side of a batch testing device according to an embodiment of the present invention.

[0028] Figure 2 It is a schematic diagram of the three-dimensional structure of the rear side of a batch testing device according to an embodiment of the present invention.

[0029] Figure 3 It is a three-dimensional structural schematic diagram of a modular tooling and an operating platform according to an embodiment of the present invention.

[0030] Figure 4 yes Figure 3 Enlarged structural diagram at A in the middle.

[0031] Figure 5 It is a schematic diagram of the exploded structure of a modular tooling and an operating platform according to an embodiment of the present invention.

[0032] Figure 6 It is a schematic diagram of the lower structure of a modular tooling according to an embodiment of the present invention.

[0033] Figure 7 It is a schematic diagram of the main structure of the lifting and limiting mechanism of one embodiment of the present invention.

[0034] Figure 8 It is a three-dimensional structural schematic diagram of a lifting and limiting mechanism according to an embodiment of the present invention.

[0035] Fig. 9 The three-dimensional structure of the modular tooling of one embodiment of the present invention is shown in FIG. Figure 1 .

[0036] Fig.10It is a schematic diagram of the exploded structure of a current sensor and a positioning carrier according to an embodiment of the present invention.

[0037] Fig.11 It is a three-dimensional structural schematic diagram of a supporting frame, a clamping cylinder and a solenoid valve group according to an embodiment of the present invention.

[0038] Fig.12 It is a schematic diagram of the three-dimensional structure of a pressing cylinder according to an embodiment of the present invention.

[0039] Fig.13 The three-dimensional structure of the modular tooling of one embodiment of the present invention is shown in FIG. Figure 2 .

[0040] Fig.14 It is a three-dimensional structural schematic diagram of a control base, a driving cylinder and a connecting plug according to an embodiment of the present invention.

[0041] Fig.15 It is a schematic structural diagram of the lower side of the control base and the driving cylinder according to an embodiment of the present invention.

[0042] In the figure: 1000, batch testing device; 100, equipment rack; 110, operating platform; 111, upper panel; 112, first slide rail; 113, guide sleeve; 120, enclosure; 121, operating port; 122, loading port; 130, loading conveyor belt; 140, locking mechanism; 141, positioning column; 142, magnetic safety lock; 150, lifting and limiting mechanism; 151, lifting cylinder; 152, lifting platform; 1521, horizontal moving seat; 1522, vertical moving seat; 1523, first slide block; 1524, guide rod; 1525, guide groove; 1526, guide column; 1527, lifting plate; 153, limiting column; 160, detection connection terminal; 170, adjusting cylinder; 200, modular tooling; 210, load-bearing frame; 2 11. Second slider; 212. Upper pressure block; 213. Avoidance hole; 214. In-position detection sensor; 215. Aviation connector; 220. Positioning carrier; 221. Busbar limit hole; 230. Test busbar; 231. Wiring terminal; 240. Transverse movement mechanism; 241. Transverse movement cylinder; 242. Transverse movement support; 243. Second slide rail; 250. Output module; 251. Output terminal; 252. Connecting plug; 253. Control base; 254. Driving cylinder; 255. Limit block; 260. Clamping cylinder; 261. Lower pressure block; 270. Solenoid valve group; 280. Gas line quick connector; 201. Positioning notch; 202. Limit hole; 300. Electrical module; 2000. Current sensor; 2100. Busbar hole; 2200. Output jack. DETAILED DESCRIPTION

[0043] The present invention will be further described below in conjunction with the accompanying drawings.

[0044] This embodiment discloses a batch testing device 1000 for current sensors. Figure 1 The batch testing device 1000 includes an equipment rack 100, a modular tooling 200, an electrical module 300 and a control module. The modular tooling 200 is detachably mounted on the equipment rack 100, the control module is disposed on the equipment rack 100, and the control module is detachably electrically connected to the modular tooling 200 to control the action of the modular tooling 200.

[0045] Reference Figure 1 and Figure 2 The equipment rack 100 includes an operating platform 110 and an enclosure 120. The operating platform 110 is a rectangular frame structure. The modular tooling 200 is installed on the operating platform 110 for user operation. The enclosure 120 is covered above the operating platform 110 and encloses the modular tooling 200.

[0046] An operating port 121 is provided on the front side of the enclosure shell 120 (i.e., the side facing the operator) for the user to perform operation controls, and a loading port 122 is provided on the rear side of the enclosure shell 120. The modular tooling 200 can enter the enclosure shell 120 from the loading port 122 and be installed on the operating platform 110.

[0047] Reference Figure 2 A loading conveyor belt 130 is provided on the operating platform 110 , and the loading conveyor belt 130 extends from the loading port 122 to the operating port 121 . The modular tooling 200 is automatically transported by the loading conveyor belt 130 , which is convenient for users to disassemble and replace the modular tooling 200 .

[0048] In this embodiment, the loading conveyor belt 130 is specifically a roller conveyor belt, and two loading conveyor belts 130 are arranged in parallel, and the loading conveyor belts 130 are arranged perpendicular to the length direction of the modular tooling 200. When the modular tooling 200 is transported by the loading conveyor belts 130, the two ends of the modular tooling 200 are respectively placed on the two loading conveyor belts 130, so that the modular tooling 200 is more stable when being transported. In addition, in other embodiments, the loading conveyor belt 130 can also be other types of conveyor belts.

[0049] Reference Figures 2 to 4, a locking mechanism 140 is provided on the operating platform 110, and the locking mechanism 140 includes a positioning column 141 and a magnetic safety lock 142. The positioning column 141 is vertically fixed to the upper panel 111 of the operating platform 110. Among them, a positioning notch 201 is provided at the bottom of the modular tooling 200, and the positioning notch 201 extends horizontally and forms a horizontal opening toward the positioning column 141. When the loading conveyor belt 130 transports the modular tooling 200 to the set position, the positioning column 141 slides into the positioning notch 201 in the horizontal direction, thereby realizing the preliminary positioning of the modular tooling 200.

[0050] The magnetic safety lock 142 is fixed to the front side of the modular tooling 200 , and a lock hole is provided on the modular tooling 200 . The lock core of the magnetic safety lock 142 can extend horizontally and be inserted into the lock hole on the modular tooling 200 , thereby locking the modular tooling 200 .

[0051] Reference Figures 5 to 7 , the operating platform 110 is also provided with a lifting and limiting mechanism 150, which is arranged below the modular tooling 200. The lifting and limiting mechanism 150 includes a lifting cylinder 151, a lifting platform 152 and a limiting column 153. The cylinder body of the lifting cylinder 151 is fixed to the panel of the operating platform 110, the piston rod of the lifting cylinder 151 is connected to the lifting platform 152, and the limiting column 153 is fixed on the lifting platform 152. A limiting hole 202 is arranged at the bottom of the modular tooling 200. When the modular tooling 200 is transported to the set position, the limiting hole 202 is aligned with the limiting column 153. At this time, the lifting platform 152 can be driven to rise by the lifting cylinder 151, and the limiting column 153 can be driven to rise and insert into the limiting hole 202, so as to limit the modular tooling 200, so that the modular tooling 200 is not easy to deviate in the horizontal direction on the operating table, so that the current sensor 2000 is more stable when detecting.

[0052] In this embodiment, the lifting and limiting mechanism 150 is arranged below the upper panel 111 of the operating platform 110, so that when the modular tooling 200 is replaced, the lifting and limiting mechanism 150 is accommodated below the operating platform 110 to avoid interfering with the transportation and disassembly of the modular tooling 200.

[0053] Reference Figures 5 to 8 In this embodiment, the lifting platform 152 includes a horizontal moving seat 1521 and a vertical moving seat 1522. A first slide rail 112 is provided on the lower side of the upper panel 111 of the operating platform 110, and a first slider 1523 cooperating with the first slide rail 112 is provided on the horizontal moving seat 1521. The lifting cylinder 151 is horizontally connected to the lower side of the upper panel 111 of the operating platform 110, and the horizontal moving seat 1521 is fixedly connected to the piston rod of the lifting cylinder 151. When the piston rod of the lifting cylinder 151 is extended or retracted, it can drive the horizontal moving seat 1521 to move horizontally.

[0054] A horizontally extending guide rod 1524 is fixedly provided on the vertical moving seat 1522. A guide groove 1525 is provided on the horizontal moving seat 1521. The guide groove 1525 is a long groove and is inclined downward in a direction away from the lifting cylinder 151. The guide rod 1524 is inserted into the guide groove 1525, and the peripheral side of the guide rod 1524 abuts against the inner wall of the guide groove 1525. A guide sleeve 113 is provided on the upper panel 111 of the operating platform 110. The guide sleeve 113 passes through the upper panel 111 of the operating platform 110 and is fixed relative to the operating platform 110. A guide column 1526 is passed through the guide sleeve 113. The guide column 1526 is connected to the vertical movable seat 1522 and passes through the guide sleeve 113 to be exposed above the upper panel 111. A lifting plate 1527 is connected to one end of the guide column 1526 away from the vertical movable seat 1522. The limiting column 153 is fixedly arranged on the upper side of the lifting plate 1527 and aligned with the limiting hole 202.

[0055] When the piston rod of the lifting cylinder 151 is extended, the horizontal moving seat 1521 moves horizontally in a direction away from the lifting cylinder 151, and the guide groove 1525 squeezes the guide rod 1524 obliquely upward. At the same time, the guide sleeve 113 limits the guide column 1526 so that the vertical moving seat 1522 cannot move horizontally, thereby causing the vertical moving seat 1522, the guide column 1526 and the lifting plate 1527 to move upward and the limiting column 153 to be inserted into the limiting hole 202 of the modular tooling 200. When the piston rod of the lifting cylinder 151 is retracted, the horizontal moving seat 1521 moves horizontally in a direction close to the lifting cylinder 151, and the guide groove 1525 squeezes the guide rod 1524 obliquely downward, thereby causing the vertical moving seat 1522 to move downward and the limiting column 153 to be separated from the limiting hole 202 of the modular tooling 200. Therefore, by adopting the lifting and limiting mechanism 150 of this embodiment, the lifting cylinder 151 can be set horizontally, thereby reducing the limitations of the arrangement of the lifting cylinder 151, reducing the vertical space occupied by the lifting and limiting mechanism 150, and facilitating the setting of the lifting and limiting mechanism 150 in the operating platform 110.

[0056] Reference Figure 6 and Fig. 9 The modular tooling 200 includes a carrying frame 210, a positioning carrier 220, a test busbar 230 and a transverse movement mechanism 240. The positioning carrier 220 is adapted to the current sensor 2000, that is, the positioning carrier 220 has an inner cavity similar in shape and size to the current sensor 2000, and the current sensor 2000 can be installed in the positioning carrier 220.

[0057] In this embodiment, the carrying frame 210 is in the shape of a rectangular box, so that the positioning carrier 220, the test busbar 230, the lateral movement mechanism 240 and other components can be integrated on or in the carrying frame 210. The outer periphery of the carrying frame 210 is in contact with the operating platform 110, and the positioning notch 201 and the limiting hole 202 are both provided at the bottom of the carrying frame 210.

[0058] The test busbar 230 is used to be electrically connected to the electrical module 300. Specifically, the outer end of the test busbar 230 is provided with a wiring terminal 231, and the wiring terminal 231 is used to be connected to the wire of the electrical module 300. A current of a set value is input to the test busbar 230 through the electrical module 300, and the current sensor 2000 generates a voltage performance output signal by sensing the current flowing through the test busbar 230. The load-bearing frame 210 is connected to an output module 250, and the output module 250 is electrically connected to the current sensor 2000. The current sensor 2000 outputs a voltage performance output signal through the output module 250. The test value of the current of the test busbar 230 is obtained by calculating and analyzing the voltage performance output signal, and whether the current sensor 2000 is qualified can be known by comparing the test value of the current of the test busbar 230 with the actual set value.

[0059] Specifically in this embodiment, refer to Fig.10 The current sensor 2000 includes a Hall element, and a plurality of busbar holes 2100 are provided on the current sensor 2000 to penetrate the current sensor 2000. When the current sensor 2000 is tested, the test busbar 230 passes through the busbar hole 2100, and the current flowing through the test busbar 230 generates a magnetic field. The Hall element generates a Hall voltage according to the magnetic field. The magnitude of the voltage depends on the magnitude of the current flowing through the test busbar 230. Therefore, the test value of the current flowing through the test busbar 230 can be obtained through calculation and analysis of the voltage.

[0060] Reference Fig. 9 and Fig.10 A plurality of positioning carriers 220 are arranged side by side along the length direction of the supporting frame 210, and the busbar holes 2100 of the current sensors 2000 on the plurality of positioning carriers 220 are aligned with each other, so that the same test busbar 230 can be simultaneously inserted into the busbar holes 2100 of the plurality of current sensors 2000 to detect the plurality of current sensors 2000.

[0061] In this embodiment, six busbar holes 2100 are provided on each current sensor 2000, and the six busbar holes 2100 are arranged in sequence along the length direction of the current sensor 2000. Correspondingly, the test busbar 230 has six forks, and each fork passes through a busbar hole 2100. In other embodiments, the number of busbar holes 2100 on each current sensor 2000 may also be other values, and correspondingly, the number of forks of the test busbar 230 of the modular tooling 200 is the same as the number of busbar holes 2100 of each current sensor 2000.

[0062] The transverse movement mechanism 240 is disposed on the supporting frame 210 , and a driving end of the transverse movement mechanism 240 is connected to the test busbar 230 . The transverse movement mechanism 240 can drive the test busbar 230 to pass through the busbar hole 2100 of the current sensor 2000 .

[0063] In this embodiment, the test busbar 230 is driven through the busbar holes 2100 of multiple current sensors 2000 by the transverse movement mechanism 240, the electrical module 300 supplies power to the test busbar 230, the current sensor 2000 detects the current of the test busbar 230 through the busbar hole 2100 and generates a voltage performance output signal, and the current sensor 2000 outputs the voltage performance output signal through the output module 250, thereby realizing batch automatic testing of the current sensor 2000. When different models of current sensors 2000 need to be tested, only the corresponding modular tooling 200 needs to be replaced. Different modular tooling 200 is loaded with different current sensors 2000, which can meet the detection of different current sensors 2000, thereby improving the batch testing capability of the current sensor 2000 and improving the compatibility of the batch testing device 1000. At the same time, since the test busbar 230, positioning carrier 220, lateral movement mechanism 240 and other components in each modular tooling 200 have been installed on the load-bearing frame 210, it is only necessary to verify the measurement system during the debugging and verification of the modular tooling 200 and the first commissioning stage. It is no longer necessary to confirm the stability of the measurement system each time the modular tooling 200 is used, which simplifies user operation. When it is necessary to test the new product current sensor 2000, there is no need to redesign the entire test device, only a new modular tooling 200 needs to be designed for this product, which reduces the R&D cycle and production cost of the batch detection device of the new product current sensor 2000.

[0064] Reference Figure 6 and Fig. 9, two test busbars 230 and two transverse movement mechanisms 240 are provided, and the two test busbars 230 are respectively provided at the two ends of the load-bearing frame 210, that is, a test busbar 230 is provided at each end of the load-bearing frame 210. The two transverse movement mechanisms 240 are respectively provided at the two ends of the load-bearing frame 210 and are correspondingly connected to the two test busbars 230, and the two transverse movement mechanisms 240 drive the two test busbars 230 to move toward or away from each other. Thus, each test busbar 230 is driven to move transversely by a transverse movement mechanism 240. When the current sensor 2000 is installed on the modular tooling 200, the two transverse movement mechanisms 240 drive the two test busbars 230 to move away from each other to expose the upper surface of the load-bearing frame 210, so as to facilitate the installation of the current sensor 2000 in the positioning carrier 220 on the load-bearing frame 210. After the current sensor 2000 is installed, the two transverse movement mechanisms 240 drive the two test busbars 230 to move toward each other. The two test busbars 230 pass through the same number of current sensors 2000 from both ends, thereby facilitating the test busbar 230 to be inserted into and out of the busbar hole 2100 of the current sensor 2000, while reducing the length of a single test busbar 230, thereby reducing the overall length of the modular tooling 200 when the test busbar 230 moves in opposite directions, making it easier for users to operate.

[0065] Reference Fig. 9 and Fig.11 The transverse mechanism 240 includes a transverse cylinder 241 and a transverse support 242. The transverse cylinder 241 is arranged on the supporting frame 210 along the length direction of the supporting frame 210, and the transverse cylinder 241 is arranged in the supporting frame 210 to avoid interference with the positioning carrier 220. The transverse support 242 is connected to the piston rod of the transverse cylinder 241, and the test busbar 230 is fixedly connected to the transverse support 242. The transverse cylinder 241 drives the transverse support 242 to move, thereby driving the test busbar 230 to move along the length direction of the supporting frame 210, so that the test busbar 230 can be automatically inserted into the busbar hole 2100 of the current sensor 2000 for testing, and automatically withdrawn from the busbar hole 2100 after the test is completed, thereby realizing batch automatic detection of the current sensor 2000.

[0066] The two sides of the traverse support 242 are respectively connected with second slide rails 243, and the second slide rails 243 are arranged parallel to the length direction of the supporting frame 210. The supporting frame 210 is fixedly provided with a second slider 211 that slidably cooperates with the second slide rail 243. The second slide rail 243 cooperates with the second slider 211, so that the traverse cylinder 241 drives the traverse support 242 to move more stably.

[0067] Reference Fig.10, a plurality of busbar limiting holes 221 are provided on the positioning carrier 220, and the busbar limiting holes 221 of the plurality of positioning carriers 220 correspond one to one, and each busbar limiting hole 221 is aligned with the busbar hole 2100 of a current sensor 2000. Specifically, in the present embodiment, six busbar limiting holes 221 are provided on each positioning carrier 220. The test busbar 230 is inserted into the busbar limiting hole 221 and then into the busbar hole 2100, and the current sensors 2000 in the plurality of positioning carriers 220 are connected in series in sequence, so that a plurality of current sensors 2000 can be detected at one time. The busbar limiting holes 221 on the positioning carrier 220 constrain the movement trajectory of the test busbar 230, so that the test busbar 230 can stably pass through the plurality of positioning carriers 220 and the current sensor 2000.

[0068] Reference Fig.11 The modular tooling 200 also includes a clamping cylinder 260, which is arranged between the two test busbars 230. The clamping cylinder 260 is used to clamp and conduct the two test busbars 230. After the two test busbars 230 move toward each other and pass through the busbar holes 2100 of the multiple current sensors 2000, the clamping cylinder 260 presses the two test busbars 230 together so that the test busbars 230 will not be offset, thereby ensuring the stability of the batch detection device during operation. At the same time, the clamping cylinder 260 keeps the two test busbars 230 conductive, so that the test busbars 230 are connected to form a loop. It is only necessary to electrically connect the two test busbars 230 to the electrical module 300 to realize the performance output detection of all current sensors 2000 on the modular tooling 200, and there is no need to wire the test busbars 230 to form a connected loop, thereby reducing the wiring steps, saving costs, and facilitating the user to operate.

[0069] Specifically, refer to Fig.11 and Fig.12 An upper pressing block 212 is arranged above the supporting frame 210, and the upper pressing block 212 is arranged above the moving path of the test busbar 230. The clamping cylinder 260 is arranged below the upper pressing block 212 and inside the supporting frame 210, so that the clamping cylinder 260 is integrated into the supporting frame 210, making the overall structure compact and reasonable. The piston rod of the clamping cylinder 260 extends vertically upward and is connected to a lower pressing block 261. The clamping cylinder 260 drives the lower pressing block 261 to move upward to press the two test busbars 230 together.

[0070] Reference Fig.10 and Fig.13, there are multiple output modules 250, the number of which is the same as the number of positioning carriers 220, and each output module 250 is connected to a current sensor 2000. Specifically, each output module 250 includes an output terminal 251 and a connection plug 252, each current sensor 2000 is provided with an output jack 2200, the connection plug 252 is plugged into the output jack 2200, and the output terminal 251 is electrically connected to the connection plug 252. Multiple output terminals 251 are fixed side by side on the outside of the carrying frame 210 and are used to be electrically connected to the control module to achieve electrical connection between the current sensor 2000 and the control module. The control module calculates and analyzes the voltage performance output signal to obtain the current detection value, and then determines whether the current sensor 2000 is qualified.

[0071] Reference Figure 13 to Figure 14 The output module 250 also includes a control base 253 and a driving cylinder 254 , the cylinder body of the driving cylinder 254 is fixed to the supporting frame 210 , the control base 253 is connected to the piston rod of the driving cylinder 254 , and the connecting plug 252 is fixed on the control base 253 .

[0072] Among them, combined Fig. 9 , Figures 13 to 15 The control base 253 and the driving cylinder 254 are both arranged in the bearing frame 210. The bearing frame 210 is provided with a plurality of avoidance holes 213. The connecting plug 252 passes through the avoidance holes 213 and is aligned with the output socket 2200, and the connecting plug 252 can slide horizontally relative to the avoidance holes 213. Thus, the output module 250 drives the base to move through the driving cylinder 254, and the connecting plug 252 is fixed on the control base 253 and moves with the base. The connecting plug 252 passes through the avoidance holes 213 and is exposed outside the bearing frame 210 to align with the output socket 2200 of the current sensor 2000, so that a plurality of connecting plugs 252 are synchronously inserted into the corresponding output sockets 2200, thereby realizing the automatic connection between the current sensor 2000 and the output module 250.

[0073] The supporting frame 210 is provided with an in-place detection sensor 214, and the control base 253 is connected to a limit block 255. When the control base 253 moves, the limit block 255 is driven to move. When the control base 253 moves to the connection plug 252 and the output jack 2200, the in-place detection sensor 214 detects the limit block 255, and the limit block 255 triggers the in-place detection sensor 214, thereby automatically knowing the connection status of the current sensor 2000 and the output module.

[0074] Specifically, in this embodiment, the in-place detection sensor 214 is a photoelectric sensor. When the limit block 255 passes the photoelectric sensor, the limit block 255 shields the photoelectric sensor, so that the in-place detection sensor 214 detects that the control base 253 moves to the set position so that the connecting plug 252 is matched with the output jack 2200. In addition, in other embodiments, the in-place detection sensor 214 can also be a pressure touch sensor or other suitable sensors.

[0075] Reference Figure 5 and Fig.11 A solenoid valve group 270 is provided in the carrying frame 210, and a gas circuit quick interface 280 is provided on the outer side of the carrying frame 210. The gas circuit quick interface 280 is connected to the solenoid valve group 270, and the gas circuit quick interface 280 is quickly connected to the gas source, and the gas circuit quick interface 280 is connected to the solenoid valve group 270. The solenoid valve group 270 is connected to the traverse cylinder 241, the clamping cylinder 260, the drive cylinder 254 and the lifting cylinder 151 through pipelines, thereby providing power for the above-mentioned cylinders. This setting method integrates the solenoid valve group 270 in the carrying frame 210, and realizes rapid disassembly and assembly with the gas source through the gas circuit quick interface 280, which facilitates the installation and replacement of the modular tooling 200.

[0076] Reference Figure 3 and Figure 5 The equipment rack 100 is provided with a detection connection terminal 160, which matches the output terminal 251 of the output module 250. Specifically, the detection connection terminal 160 includes a plurality of probes, which can be in contact with the output terminal 251 to be electrically connected.

[0077] The detection connection terminal 160 is slidably disposed on the operation table of the equipment rack 100 and is electrically connected to the control module. Specifically, an adjustment cylinder 170 is disposed on the operation table, and the piston rod of the adjustment cylinder 170 is connected to the detection connection terminal 160. The adjustment cylinder 170 drives the detection connection terminal 160 to move forward and backward, so as to move the monitoring connection terminal to match the output module 250, thereby realizing the electrical connection between the output module 250 and the control module.

[0078] Reference Figure 5 An aviation connector 215 is provided on the outside of the carrying frame 210. The aviation connector is electrically connected to the electromagnetic valve group 270 in the carrying frame 210, and the aviation connector is connected to the control module for communication. The aviation connector is used to realize the signal connection between the modular tooling 200 and the control module, so that the control module can control the switching of each electromagnetic valve of the electromagnetic valve group 270, and then control the operation of the lateral movement mechanism 240, the lifting and limiting mechanism 150, the clamping cylinder 260 and the driving cylinder 254.

[0079] In this embodiment, the control module includes a computer and a PLC. The computer receives the voltage performance output signal output by the current sensor 2000, and processes and calculates the voltage performance output signal to obtain the current detection value of the test busbar 230. The computer stores the detection value of the current of the test busbar 230 and the current value provided by the electrical module 300 for the test busbar 230, and can compare the detection value with the current value to analyze the detection error of the current sensor 2000. Preferably, in this embodiment, the computer is a PC, which is connected to an external display and input devices such as a keyboard and mouse. The data detected by the current sensor 2000 and the operating parameters of the batch testing device 1000 are displayed in real time on the display, and the computer is operated by the keyboard and mouse. The PLC is used to control the solenoid valve group 270, and then control the operation of the transverse movement mechanism 240, the lifting limit mechanism 150, the clamping cylinder 260 and the driving cylinder 254.

[0080] The above description is only a preferred embodiment of the present invention, so all equivalent changes or modifications made according to the structure, characteristics and principles described in the scope of the patent application of the present invention are included in the scope of the patent application of the present invention.

Claims

1. A batch testing device for current sensors, characterized in that: The automatic testing device comprises an equipment rack (100), a modular tooling (200), an electrical module (300) and a control module; the modular tooling (200) is detachably mounted on the equipment rack (100); the control module is arranged on the equipment rack (100); the control module is detachably electrically connected to the modular tooling (200) to control the action of the modular tooling (200); The modular tooling (200) comprises a load-bearing frame (210), a positioning carrier (220), a test busbar (230) and a transverse movement mechanism (240); the positioning carrier (220) is adapted to the current sensor (2000), and a plurality of the positioning carriers (220) are arranged side by side along the length direction of the load-bearing frame (210); the transverse movement mechanism (240) is arranged on the load-bearing frame (210), a driving end of the transverse movement mechanism (240) is connected to the test busbar (230), and the transverse movement mechanism (240) can drive the test busbar (230) to pass through the busbar hole (2100) of the current sensor (2000); The test busbar (230) is electrically connected to the electrical module (300), and the electrical module (300) is used to provide a test current for the test busbar (230); the supporting frame (210) is connected to an output module (250), and the output module (250) is electrically connected to the current sensor (2000), and the current sensor (2000) outputs a voltage performance output signal through the output module (250).

2. A batch testing device for current sensors as claimed in claim 1, characterized in that: The positioning carrier (220) is provided with a plurality of busbar limiting holes (221), the busbar limiting holes (221) of the plurality of positioning carriers (220) correspond one to one, and each busbar limiting hole (221) is aligned with a busbar hole (2100) of a current sensor (2000); the test busbar (230) is inserted into the busbar limiting hole (221).

3. A batch testing device for current sensors as claimed in claim 1, characterized in that: The transverse movement mechanism (240) comprises a transverse movement cylinder (241) and a transverse movement support (242), wherein the transverse movement cylinder (241) is arranged on the supporting frame (210) along the length direction of the supporting frame (210), the transverse movement support (242) is connected to the piston rod of the transverse movement cylinder (241), and the test busbar (230) is fixedly connected to the transverse movement support (242).

4. A batch testing device for current sensors as claimed in claim 1 or 3, characterized in that: The test busbars (230) and the transverse movement mechanisms (240) are both provided with two, the two test busbars (230) are respectively provided at the two ends of the supporting frame (210), the two transverse movement mechanisms (240) are respectively connected to the two test busbars (230), and the two transverse movement mechanisms (240) drive the two test busbars (230) to move towards or away from each other.

5. A batch testing device for current sensors as claimed in claim 4, characterized in that: The modular tooling (200) further comprises a clamping cylinder (260), wherein the clamping cylinder (260) is arranged between the two test busbars (230), and the clamping cylinder (260) is used to clamp and conduct the two test busbars (230).

6. A batch testing device for current sensors as claimed in claim 1, characterized in that: The number of the output modules (250) is the same as the number of the positioning carriers (220); each of the output modules (250) comprises an output terminal (251) and a connection plug (252); each of the current sensors (2000) is provided with an output jack (2200); the connection plug (252) is matched with the output jack (2200); the output terminal (251) is electrically connected to the connection plug (252); and the output terminal (251) is fixed to the outside of the supporting frame (210) and is used to be electrically connected to the control module.

7. A batch testing device for current sensors as claimed in claim 6, characterized in that: The output module (250) further comprises a control base (253) and a driving cylinder (254); the cylinder body of the driving cylinder (254) is fixed to the supporting frame (210); the control base (253) is connected to the piston rod of the driving cylinder (254); and the connecting plug (252) is fixed to the control base (253); a plurality of avoidance holes (213) are provided on the supporting frame (210); the connecting plug (252) passes through the avoidance holes (213) and is aligned with the output jack (2200).

8. A batch testing device for current sensors as claimed in claim 7, characterized in that: The carrying frame (210) is provided with an in-place detection sensor (214), and the control base (253) is connected to a limit block (255); when the connection plug (252) is inserted into the output jack (2200), the limit block (255) triggers the in-place detection sensor (214).

9. A batch testing device for current sensors as claimed in claim 1, characterized in that: The device rack (100) is provided with a detection connection terminal (160), the detection connection terminal (160) matches the output module (250), and the detection connection terminal (160) is slidably arranged on the device rack (100) and is electrically connected to the control module.

10. The batch testing device for current sensors according to claim 1, characterized in that: The modular tooling (200) further comprises a solenoid valve group (270), a gas circuit quick interface (280) is provided on the carrying frame (210), the gas circuit quick interface (280) is connected to the solenoid valve group (270), and the transverse movement mechanism (240) is connected to the solenoid valve group (270) and is moved by pneumatic drive.

Images