Current sensor batch test tool

Abstract

The utility model relates to a batch test tool for current sensors. The current sensor testing device comprises a testing seat, the top surface of the testing seat is provided with a plurality of positioning grooves suitable for positioning and placing a current sensor to be tested, and the current sensor to be tested comprises a terminal and a plurality of pins; the plurality of groups of test probe assemblies are respectively arranged in the test seat, and each group of test probe assemblies is used for being in contact with the pins; the multiple groups of current probe assemblies are respectively arranged in the test seat, and each group of current probe assembly comprises two current probes and is used for being in contact with the two terminals of the current sensor to be tested; and a connecting conductor is connected between two adjacent groups of current probe assemblies. According to the utility model, the test efficiency is improved, the consistency and accuracy of the test are ensured, the requirement of manual operation is reduced, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of chip testing, in particular to a current sensor batch testing tool. Background Art

[0002] Current sensors are widely used in industrial, commercial and communication systems for AC or DC current detection due to their small package size, wide measurement range, light weight and low power loss. As a key link in the production process, high and low temperature testing is essential to ensure product quality.

[0003] At present, the existing technology adopts manual operation, which is to manually clamp a simple single product test tool and then put it into a high and low temperature box for testing. However, this method has problems such as large workload and low efficiency. Summary of the invention

[0004] Therefore, the technical problem to be solved by the utility model is to overcome the problems of large workload and low efficiency in the current sensor test in the prior art.

[0005] In order to solve the above technical problems, the utility model provides a current sensor batch test tool, including:

[0006] A test socket, wherein a top surface thereof is provided with a plurality of positioning grooves suitable for positioning and placing a current sensor to be measured, wherein the current sensor to be measured comprises a shell, and a magnetic core, a Hall chip and a conductor respectively arranged in the shell, wherein the magnetic core comprises an accommodation space suitable for the conductor to pass through, wherein the conductor extends outwardly from the shell along a first direction and bends downward, and two symmetrical terminals are respectively led out, wherein the Hall chip is arranged in the accommodation space, and wherein the Hall chip comprises a plurality of pins extending outwardly from the shell along a second direction and bends downward, wherein the first direction is perpendicular to the second direction;

[0007] A plurality of groups of test probe assemblies are respectively arranged in the test sockets, and each group of the test probe assemblies is used to contact the pins;

[0008] A plurality of groups of current probe assemblies are respectively arranged in the test socket, each group of the current probe assemblies comprises two current probes and is used to contact the two terminals of the current sensor to be tested;

[0009] Wherein, a connecting conductor is connected between two adjacent groups of the current probe assemblies.

[0010] In an embodiment of the present utility model, the positioning groove is provided with a terminal channel suitable for the terminal to pass through and a pin channel suitable for the pin to pass through.

[0011] In an implementation manner of the present invention, a plurality of the positioning grooves are distributed side by side on the top surface of the test seat.

[0012] In one embodiment of the utility model, the test socket includes a socket body and a first support block and a second support block extending at both ends of the bottom surface of the socket body, and the socket body is respectively provided with a first mounting hole and a second mounting hole distributed side by side, each of the current probes is correspondingly installed in the first mounting hole and extends out of the bottom surface of the socket body, and each of the test probe assemblies is correspondingly installed in the second mounting hole and extends out of the bottom surface of the socket body.

[0013] In one implementation of the present invention, the first mounting hole is coaxially arranged with the terminal channel; and the second mounting hole is coaxially arranged with the pin channel.

[0014] In one embodiment of the present utility model, in two adjacent groups of the current probe assemblies, the connecting conductor is connected between the portions of two adjacent current probes that each extend out of the bottom surface of the seat body.

[0015] In one embodiment of the utility model, the portion of the current probe extending out of the bottom surface of the seat body is located between the first support block and the second support block, the second support block is provided with spacing grooves, and the portion of each test probe assembly extending out of the bottom surface of the seat body is located in the corresponding spacing groove.

[0016] In an implementation manner of the present utility model, the connecting conductor is made of copper sheet.

[0017] In one embodiment of the present invention, the current probe adopts a MNP50-G8 probe; the test probe assembly adopts a P50-A2 probe.

[0018] In an embodiment of the present utility model, a pressing plate for pressing the housing is disposed on the top surface of the test seat, and the pressing plate is connected to the test seat by bolts.

[0019] The above technical solution of the utility model has the following advantages compared with the prior art:

[0020] The current sensor batch test tool described in the utility model can place multiple current sensors for batch testing at the same time by adopting a test seat with multiple positioning slots. The preset current and test probe assembly simplifies the electrical connection process, and there is no need to manually connect the terminals and pins of the sensor. Compared with the existing single product testing method, it greatly improves the test efficiency, ensures the consistency and accuracy of the test, reduces the need for manual operation, and reduces production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to make the content of the utility model more clearly understood, the utility model is further described in detail below based on specific embodiments of the utility model in combination with the accompanying drawings.

[0022] Figure 1 It is a first-view structural schematic diagram of a high and low temperature testing tool for a current sensor of the utility model.

[0023] Figure 2 It is a second perspective structural schematic diagram of the high and low temperature testing tooling of the current sensor of the utility model.

[0024] Figure 3 It is a structural schematic diagram of the utility model current sensor high and low temperature test tooling after omitting the test socket.

[0025] Figure 4 It is a structural schematic diagram of the test socket of the utility model.

[0026] Figure 5 It is a structural schematic diagram of the current sensor to be measured of the utility model.

[0027] Figure 6 It is a schematic structural diagram of the utility model current sensor to be measured with the housing omitted.

[0028] Figure 7 It is a structural schematic diagram of the utility model after the pressing plate is installed.

[0029] Description of the Figures in the Specification:

[0030] 100, current sensor to be measured; 110, housing; 120, magnetic core; 130, Hall chip; 131, pin; 140, conductor; 141, terminal;

[0031] 1. Test socket; 11. Positioning slot; 12. Terminal channel; 13. Pin channel; 14. Socket body; 15. First support block; 16. Second support block; 17. First mounting hole; 18. Spacing slot; 19. Second mounting hole;

[0032] 2. Test probe assembly;

[0033] 3. Current probe assembly;

[0034] 4. Connect the conductor;

[0035] 5. Pressure plate; 51. Bolt. DETAILED DESCRIPTION

[0036] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0037] In the present invention, if directions (up, down, left, right, front and back) are described, it is only for the convenience of describing the technical solution of the present invention, and does not indicate or imply that the technical features referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0038] In the present utility model, "several" means one or more, "multiple" means more than two, "greater than", "less than", "exceed" and the like are understood to exclude the number itself; "above", "below", "within" and the like are understood to include the number itself. In the description of the present utility model, if there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0039] In the present invention, unless otherwise clearly defined, the words "set", "install", "connect" and the like should be understood in a broad sense, for example, they can be directly connected or indirectly connected through an intermediate medium; they can be fixedly connected or detachably connected or integrally formed; they can be mechanically connected or electrically connected or able to communicate with each other; they can be the internal connection of two elements or the interaction relationship between two elements. Those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0040] Reference Figures 1 to 5 As shown, a current sensor batch testing tool of the utility model includes:

[0041] A test socket 1, the top surface of which is provided with a plurality of positioning grooves 11 suitable for positioning and placing a current sensor 100 to be tested, the current sensor 100 to be tested comprises a housing 110 and a magnetic core 120, a Hall chip 130 and a conductor 140 respectively arranged in the housing 110, the magnetic core 120 is U-shaped and comprises an accommodation space suitable for the conductor 140 to pass through, the conductor 140 extends outwardly from the housing 110 along a first direction and bends downward, and two symmetrical terminals 141 are respectively led out, the Hall chip 130 is arranged in the accommodation space, and the Hall chip 130 comprises a plurality of pins 131 extending outwardly from the housing 110 along a second direction and bending downward, and the first direction is perpendicular to the second direction;

[0042] A plurality of test probe assemblies 2 are respectively disposed in the test socket 1, and each group of the test probe assemblies 2 is used to contact the pins 131;

[0043] A plurality of sets of current probe assemblies 3 are respectively disposed in the test socket 1 , each set of the current probe assemblies 3 includes two current probes and is used to contact the two terminals 141 of the current sensor 100 to be tested;

[0044] Wherein, a connecting conductor 4 is connected between two adjacent groups of the current probe assemblies 3 .

[0045] Through the above arrangement, the multiple positioning slots 11 can simultaneously place multiple sensors for testing, thereby enhancing work efficiency.

[0046] In one embodiment, the positioning groove 11 is provided with a terminal channel 12 suitable for the terminal 141 to pass through and a pin channel 13 suitable for the pin 131 to pass through. The arrangement of the positioning groove 11, the terminal 141 and the pin channel 13 ensures accurate contact between the probe and the terminal 141 and the pin 131.

[0047] In one embodiment, a plurality of the positioning grooves 11 are distributed side by side on the top surface of the test socket 1 .

[0048] Specifically, refer to Figure 3 , Figure 4 As shown, the test socket 1 includes a socket body 14 and a first support block 15 and a second support block 16 extending at both ends of the bottom surface of the socket body 14. The socket body 14 is provided with a first mounting hole 17 and a second mounting hole 19 distributed side by side. Each current probe is correspondingly installed in the first mounting hole 17 and extends out of the bottom surface of the socket body 14. Each test probe assembly 2 is correspondingly installed in the second mounting hole 19 and extends out of the bottom surface of the socket body 14.

[0049] In one embodiment, the first mounting hole 17 is coaxially arranged with the terminal channel 12; the second mounting hole 19 is coaxially arranged with the pin channel 13. The first mounting hole 17 and the second mounting hole 19 are coaxially arranged with the corresponding channels, ensuring effective contact between the probe and the terminal 141 and the pin 131, thereby reducing measurement errors.

[0050] In one embodiment, referring to Figure 2 As shown, in two adjacent groups of current probe assemblies 3, the connecting conductor 4 is connected between the two adjacent current probes extending out of the bottom surface of the seat 14. The connecting conductor 4 between the current probes ensures the smooth flow of the series current, which meets the current carrying requirements of the sensor in high temperature testing.

[0051] In one embodiment, referring to Figure 2As shown, the portion of the current probe extending out of the bottom surface of the seat body 14 is located between the first support block 15 and the second support block 16, and the second support block 16 is provided with spacing grooves 18, and the portion of each test probe assembly 2 extending out of the bottom surface of the seat body 14 is located in the corresponding spacing groove 18. The above arrangement allows the test probe assemblies 2 to be arranged in an orderly manner, which helps to maintain stability and is also convenient for maintenance and inspection.

[0052] In one embodiment, the connecting conductor 4 is made of copper sheet. Using copper sheet as the connecting conductor 4 ensures stable electrical performance under high and low temperature conditions.

[0053] In one embodiment, the current probe uses a MNP50-G8 probe; the test probe assembly 2 uses a P50-A2 probe. It can be understood that during testing, each test probe assembly 2 is connected to a PCB board.

[0054] Reference Figure 7 As shown, in order to maintain the position stability of the current sensor 100 to be tested during testing, a pressing plate 5 for pressing the housing 110 is provided on the top surface of the test socket 11 , and the pressing plate 5 is connected to the test socket 1 by bolts 51 .

[0055] During the test, each current sensor 100 to be tested is placed in the positioning groove 11, so that the terminal 141 of the current sensor 100 to be tested passes through the terminal channel 12 and contacts the current probe, and the pin 131 passes through the pin channel 13 and contacts the test probe assembly 2; then the tooling is placed in a high-temperature box, and the current probes at both ends are energized to form a series current flowing through each current sensor 100 to be tested, and the two terminals 141 of each current sensor are turned on and the magnetic core 120 of each current sensor will generate a magnetic field. The Hall chip 130 senses the change in the magnetic field, and transmits the test signal to the PCB board through the pin 131, and then the feedback signal is transmitted to the connected host computer, and the data is read and analyzed by the host computer, thereby completing the current energization and signal testing of the sensor under temperature change conditions.

[0056] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to examples, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A current sensor batch test tool, characterized in that: include: A test socket (1), the top surface of which is provided with a plurality of positioning grooves (11) suitable for positioning and placing a current sensor (100) to be tested, the current sensor (100) to be tested comprising a housing (110) and a magnetic core (120), a Hall chip (130) and a conductor (140) respectively arranged in the housing (110), the magnetic core (120) comprising a housing space suitable for the conductor (140) to pass through, the conductor (140) extending outwardly from the housing (110) along a first direction and bending downward, respectively leading out two symmetrical terminals (141), the Hall chip (130) being arranged in the housing space, the Hall chip (130) comprising a plurality of pins (131) extending outwardly from the housing (110) along a second direction and bending downward, the first direction being perpendicular to the second direction; A plurality of groups of test probe assemblies (2) are respectively arranged in the test seat (1), and each group of the test probe assemblies (2) is used to contact the pin (131); A plurality of groups of current probe assemblies (3) are respectively arranged in the test socket (1), each group of the current probe assemblies (3) comprising two current probes and being used to contact the two terminals (141) of the current sensor (100) to be tested; Wherein, a connecting conductor (4) is connected between two adjacent groups of current probe assemblies (3).

2. A current sensor batch testing tool according to claim 1, characterized in that: The positioning groove (11) is provided with a terminal channel (12) suitable for the terminal (141) to pass through, and a pin channel (13) suitable for the pin (131) to pass through.

3. A current sensor batch testing tool according to claim 2, characterized in that: A plurality of the positioning grooves (11) are distributed side by side on the top surface of the test seat (1).

4. A current sensor batch testing tool according to claim 3, characterized in that: The test socket (1) comprises a socket body (14) and a first support block (15) and a second support block (16) extending from two ends of the bottom surface of the socket body (14); the socket body (14) is provided with a first mounting hole (17) and a second mounting hole (19) which are arranged side by side; each current probe is correspondingly mounted in the first mounting hole (17) and extends out of the bottom surface of the socket body (14); and each test probe assembly (2) is correspondingly mounted in the second mounting hole (19) and extends out of the bottom surface of the socket body (14).

5. A current sensor batch testing tool according to claim 4, characterized in that: The first mounting hole (17) is coaxially arranged with the terminal channel (12); and the second mounting hole (19) is coaxially arranged with the pin channel (13).

6. A current sensor batch testing tool according to claim 4, characterized in that: In two adjacent groups of the current probe assemblies (3), the connection conductor (4) is connected between the portions of the two adjacent current probes that each extend out of the bottom surface of the seat body (14).

7. The current sensor batch testing tool according to claim 4, characterized in that: The portion of the current probe extending out of the bottom surface of the seat body (14) is located between the first support block (15) and the second support block (16); the second support block (16) is provided with spacing grooves (18); and the portion of each test probe assembly (2) extending out of the bottom surface of the seat body (14) is located in the corresponding spacing groove (18).

8. The current sensor batch testing tool according to claim 1, characterized in that: The connecting conductor (4) is made of copper sheet.

9. The current sensor batch testing tool according to claim 1, characterized in that: The current probe adopts an MNP50-G8 probe; and the test probe assembly (2) adopts a P50-A2 probe.

10. The current sensor batch testing tool according to claim 1, characterized in that: A pressing plate (5) for pressing against the housing (110) is provided on the top surface of the test seat (1), and the pressing plate (5) is connected to the test seat (1) via bolts (51).

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