Current sensor-based test equipment and test method

Abstract

The disclosed embodiments provide a test device and method based on a current sensor. The device includes: a product carrier; a lifting and positioning mechanism; a connector plugging and unplugging mechanism for driving the connector to plug into each positioned current sensor; a test bus mechanism for driving the first bus to move to a test position upon completion of connector plugging, where each positioned current sensor is inserted through the first bus; an elastic bus mechanism, wherein a second bus is arranged vertically with the first bus at the test position; and a bus moving mechanism for driving a third bus to move vertically, wherein the first electrical connection portion and the second electrical portion of the third bus are in conductive contact with the first bus and the second bus, respectively, in sequence, to form a conductive path. This achieves fully automated transportation, connector plugging, bus connection, and testing of current sensors, eliminating manual reliance and significantly improving efficiency and reliability.

Description

Technical Field

[0001] The present disclosure relates to the technical field of current sensor testing, and in particular to a testing device and a testing method based on a current sensor. Background Art

[0002] The current fitting test process is one of the most important and critical processes for detecting and monitoring sensors in smart grids, electric vehicles, etc. It mainly involves placing the current sensor on a designated fixture and fixing it so that the test copper bus contacts the copper bus at the other end, enabling a closed-loop detection of the current sensor. After the current is turned on, the curve of the induced signal value of the current sensor is tested by changing different currents.

[0003] The commonly used current fitting test structure uses a conductive flat copper busbar. One of the busbars, which passes through the current sensor, is pressed down with screws or a power source component, bringing the busbar's surface into contact with the other busbar. This pressure ensures a tight fit during the test. Once the two busbars are in full contact, the test is powered on.

[0004] However, this solution presents several issues. First, each current sensor product requires manual insertion and removal of the probe, resulting in low production efficiency and high labor intensity. Furthermore, manual insertion and removal of the probe is unstable and can cause collisions, potentially resulting in poor contact and scratches on the product housing.

[0005] Secondly, since it relies on manual operation, each time a product is tested, it takes a long time for the human to wait before the next batch of products can be produced, resulting in low production efficiency.

[0006] Furthermore, due to reliance on manual operation, the test accuracy cannot be precisely controlled, and the temperature of the product manufacturing process cannot be monitored and collected in real time, which cannot meet the information and intelligent requirements of product production. Summary of the Invention

[0007] In view of the above-mentioned shortcomings of the prior art, the purpose of the present disclosure is to provide a testing device and a testing method based on a current sensor to solve the problems of the prior art.

[0008] According to a first aspect of the present disclosure, there is provided a current sensor-based testing device, comprising: a product carrier for loading at least one row of current sensors and configured to be movable to a specified position; a lifting and positioning mechanism for positioning the product carrier upon arrival at the specified position; a connector plugging and unplugging mechanism for driving the connector to be plugged into each of the positioned current sensors upon the product carrier obtaining the positioning; a test bus mechanism for driving a first bus to move to a test position upon completion of the connector plugging, wherein the first bus is penetrated by each of the positioned current sensors at the test position; an elastic bus mechanism comprising a second bus capable of elastically moving up and down; the second bus being arranged in a vertical direction with the first bus located at the test position; and a bus moving mechanism for driving a third bus to move in the vertical direction upon arrival of the first bus at the test position, wherein, during the movement, the first electrical connection portion and the second electrical portion of the third bus are in conductive contact with the first bus and the second bus, respectively, in sequence, to form a conductive path.

[0009] In an embodiment of the first aspect, the product carrier includes: a carrier base plate; groups of sensor shaped seats and bus support seats arranged in at least one row, which are arranged on the carrier base plate; the sensor shaped seats are used to receive current sensors, and the bus support seats are used to support a first bus through which the current sensor is passed.

[0010] In an embodiment of the first aspect, the lifting and positioning mechanism includes: a carrier top support plate, the upper surface of which is used to support the product carrier; at least one upper and lower guide column, connected to the carrier top support plate, which can be raised and lowered; a horizontal positioning assembly, including a push-pull power source component, and a sliding block driven by the push-pull power source component to move horizontally, and the sliding block moves horizontally to press the product carrier to position it.

[0011] In an embodiment of the first aspect, a matching positioning pin and positioning pin sleeve are formed between the lifting and positioning mechanism and the product carrier.

[0012] In an embodiment of the first aspect, the connector plug-in and plug-out mechanism includes: a connector base plate; a mechanism support plate, a mobile power source component and a sliding sleeve combination, which is arranged on the connector base plate; the sliding sleeve combination includes a sliding rod fixedly connected to the mechanism support plate, and a sliding sleeve that can slide relatively to the sliding rod; the mobile power source component is connected to and drives the mechanism support plate; an up and down adjustment screw rod is connected to and adjusts the lifting position of the connector base plate; at least one row of connectors is arranged on the mechanism support plate, so as to move with the mechanism support plate to connect with at least one row of current sensors.

[0013] In an embodiment of the first aspect, the test bus mechanism includes: a supporting base plate that can be slid along a first horizontal direction; a bus fixing seat that can be slid along a second horizontal direction, which is arranged on the supporting base plate and loaded with the second bus; the second horizontal direction is perpendicular to the first horizontal direction; a first servo drive module, which is connected to and drives the supporting base plate to slide in the first horizontal direction; and a second servo drive module, which is connected to and drives the bus fixing seat to slide in the second horizontal direction.

[0014] In an embodiment of the first aspect, the convergence moving mechanism includes: a support plate; upper and lower guide columns, the upper ends of which are positioned to the support plate and the lower ends of which extend downward; an auxiliary support plate, fixedly connected to the lower ends of the upper and lower guide columns, and guided by the upper and lower guide columns to move up and down; a spring pressure plate, fixedly provided on the lower surface of the auxiliary support plate; the third bus, fixedly connected to the side of the auxiliary support plate; and upper and lower driving power source components, which connect and drive the up and down movement of the auxiliary support plate.

[0015] In an embodiment of the first aspect, the first busbar has a first conductive segment, a second conductive segment, and a third conductive segment, the first conductive segment and the second conductive segment are arranged in parallel and are conductively connected to each other through the third conductive segment; the second busbar has a first conductor and a second conductor that are separated from each other and extend in a horizontal plane; the second busbar has a third conductor and a fourth conductor that are separated from each other and extend vertically, the lower ends of the third conductor and the fourth conductor forming the first electrical connection portion for respectively conductively contacting the first conductive segment and the second conductive segment during up and down movement; the upper ends of the third conductor and the fourth conductor are bent to form a second electrical connection portion for respectively conductively contacting the first conductor and the second conductor during up and down movement.

[0016] In an embodiment of the first aspect, the elastic bus mechanism includes: a tooling shell, forming at least one groove; at least one second bus, each second bus stacked on a spring support plate, and arranged in one of the grooves; a jacking power source component, connected to and driving the tooling shell to move up and down.

[0017] In an embodiment of the first aspect, the second busbar is made of T2 copper and has a diameter of 18 mm to 20 mm or more; and / or the surface of the second busbar is gold-plated.

[0018] In an embodiment of the first aspect, the connector is made of nylon.

[0019] A second aspect of the present disclosure provides a current fitting test method based on current sensors, using the test equipment described in any one of the first aspects, the method comprising: loading a product carrier with at least one row of current sensors and moving the product carrier to a designated position; positioning the product carrier in response to the product carrier arriving at the designated position; driving a connector to be plugged into each of the positioned current sensors in response to the product carrier obtaining the positioning; driving a first bus to move to a test position in response to completion of the connector plugging, where the first bus is passed through each of the positioned current sensors; determining the upper and lower positions of a second bus so that the spacing between the second bus and the first bus is suitable for the height of the third bus; driving a third bus to move in the upper and lower directions in response to the first bus arriving at the test position, and during the movement, the first electrical connection portion and the second electrical portion of the third bus are in conductive contact with the first bus and the second bus, respectively, in sequence, to form a conductive path; and performing a current fitting test on each current sensor based on current flowing through the conductive path.

[0020] In an embodiment of the second aspect, the current fitting test method includes: synchronously with the current fitting test process, taking and placing the current sensor through the product carrier.

[0021] In an embodiment of the second aspect, the current fitting test method includes: automatically recording and analyzing process parameters of the current sensor during the current fitting test.

[0022] In summary, the present disclosure provides a current sensor-based testing device and method, comprising: a product carrier for loading at least one row of current sensors; a lifting and positioning mechanism; a connector plugging and unplugging mechanism for driving the connectors to plug into each positioned current sensor; a test bus mechanism for driving a first bus to move to a test position upon completion of connector plugging, where the first bus is threaded with each positioned current sensor; an elastic bus mechanism, wherein a second bus is arranged vertically with the first bus at the test position; and a bus moving mechanism for driving a third bus to move vertically upon the first bus reaching the test position, where the first electrical connection portion and the second electrical portion of the third bus are in conductive contact with the first bus and the second bus, respectively, to form a conductive path. This system enables fully automated transportation, connector plugging, bus connection, and testing of current sensors, eliminating manual reliance and significantly improving efficiency and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic structural diagram of a current sensor-based testing device in one embodiment of the present disclosure is shown.

[0024] Figure 2 A schematic structural diagram of a product carrier in one embodiment of the present disclosure is shown.

[0025] Figure 3 A schematic structural diagram of a lifting and positioning mechanism in one embodiment of the present disclosure is shown.

[0026] Figure 4 A schematic structural diagram of a connector plugging and unplugging mechanism in one embodiment of the present disclosure is shown.

[0027] Figure 5 A schematic structural diagram of a test bus mechanism in one embodiment of the present disclosure is shown.

[0028] Figure 6 A schematic structural diagram of an elastic bus mechanism in one embodiment of the present disclosure is shown.

[0029] Figure 7 A schematic structural diagram of a converging movement mechanism in one embodiment of the present disclosure is shown.

[0030] Figure 8 A structural schematic diagram showing the specific structure and electrical contact method of the third bus bar, the second bus bar and the first bus bar.

[0031] Figure 9 A flow chart showing a current fitting test method based on a current sensor in one embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0032] The following describes the embodiments of the present disclosure through specific examples. Those skilled in the art can easily understand the other advantages and effects of the present disclosure from the information disclosed in this disclosure. The present disclosure can also be implemented or applied through different specific embodiments. The details of the present disclosure can also be modified or changed according to different viewpoints and application modules without departing from the spirit of the present disclosure. It should be noted that the embodiments and features in the embodiments of the present disclosure can be combined with each other unless there is a conflict.

[0033] The following is a detailed description of the embodiments of the present disclosure with reference to the accompanying drawings so that those skilled in the art can easily implement the present disclosure. The present disclosure can be embodied in many different forms and is not limited to the embodiments described herein.

[0034] Throughout the present disclosure, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present disclosure. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or a group of embodiments or examples. Furthermore, those skilled in the art may combine and integrate different embodiments or examples, and features of different embodiments or examples, as described in the present disclosure, without conflicting requirements.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the context of this disclosure, "a group" means two or more, unless otherwise specifically defined.

[0036] In order to clearly describe the present disclosure, components not related to the description are omitted, and the same or similar components throughout the specification are denoted by the same reference numerals.

[0037] Throughout this specification, when a device is said to be "connected" to another device, this includes not only "direct connection" but also "indirect connection" with other elements interposed therebetween. Furthermore, when a device is said to "include" a certain component, unless otherwise stated, this does not exclude the inclusion of other components but rather implies that the device may include other components.

[0038] Although the terms first, second, etc. are used in this document to represent various elements in some examples, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, the first interface and the second interface, etc. are represented. Furthermore, as used in this document, the singular forms "one," "an," and "the" are intended to also include the plural forms, unless there is a contrary indication in the context. It should be further understood that the terms "comprise" and "include" indicate the presence of the described features, steps, operations, elements, modules, projects, types, and / or groups, but do not exclude the presence, occurrence, or addition of one or a group of other features, steps, operations, elements, modules, projects, types, and / or groups. The terms "or" and "and / or" used herein are interpreted as inclusive, or mean any one or any combination. Therefore, "A, B, or C" or "A, B, and / or C" means "any of the following: A; B; C; A and B; A and C; B and C; A, B, and C." Exceptions to this definition only occur when the combination of elements, functions, steps, or operations is inherently mutually exclusive in some way.

[0039] The technical terms used herein are intended only to refer to specific embodiments and are not intended to limit the present disclosure. The singular form used herein also includes the plural form, unless the statement explicitly indicates otherwise. The term "comprising" as used in this specification specifies specific features, regions, integers, steps, operations, elements, and / or components, and does not exclude the presence or addition of other features, regions, integers, steps, operations, elements, and / or components.

[0040] Although not defined differently, all terms used herein, including technical and scientific terms, have the same meanings as those generally understood by those skilled in the art to which this disclosure belongs. Terms defined in commonly used dictionaries are additionally interpreted as having meanings consistent with relevant technical literature and the current message. Unless otherwise defined, they should not be overly interpreted as ideal or highly formalized meanings.

[0041] In the current fitting test, it is necessary to use a current sensor to electromagnetically induce the current in the circuit to obtain an induction signal, and use the induction signal to perform the current fitting test process. The current common current fitting test structure is completed by pressing the copper busbars passing through the current sensor into contact and then turning on the power. However, since this solution relies heavily on manual operation, such as manually plugging and unplugging the probe into each current sensor, if 20 current sensors are tested each time, it needs to be plugged and unplugged 20 times, which is extremely inefficient. Improper manual operation may cause poor contact of the probe and damage the product casing. In addition, the waiting time for manual operation is also long, which is difficult to optimize and the test accuracy is also difficult to control.

[0042] In view of this, embodiments of the present disclosure provide a testing device and a testing method based on a current sensor to solve the above problems.

[0043] like Figure 1 , which shows a schematic structural diagram of a current sensor-based testing device in one embodiment of the present disclosure.

[0044] exist Figure 1In the embodiment, the test equipment based on the current sensor 103 includes: a product carrier 100, a lifting and positioning mechanism 200, a connector plugging and unplugging mechanism 300, a test bus mechanism 400, an elastic bus mechanism 600, and a bus movement mechanism 500. The six mechanisms of the product carrier 100, the lifting and positioning mechanism 200, the connector plugging and unplugging mechanism 300, the test bus mechanism 400, the bus movement mechanism 500, and the elastic bus mechanism 600 automatically cooperate to complete the conductive connection between the buses, ensure smooth conduction, and wait for the test to end. In some embodiments, three axes can be defined based on space: X, Y, and Z, where X represents the left-right direction, Y represents the front-back direction, and Z represents the up-down direction. It should be noted that the coordination among the product carrier 100, the lifting and positioning mechanism 200, the connector plugging and unplugging mechanism 300, the test bus mechanism 400, the bus movement mechanism 500, and the elastic bus mechanism 600 can be triggered based on the physical coordination of the mechanisms, sensor detection signals, and / or conditions related to the operating parameters of a power source such as a cylinder, a hydraulic cylinder, or a motor. For example, the movement of the product carrier 100 into position is sensed by a sensor, or the operating parameters of the power source of the product carrier 100 indicate that the product carrier 100 has moved into position, such as the movement stroke of a cylinder or a hydraulic cylinder or the rotation stroke of a motor, thereby triggering the lifting and positioning mechanism 200 to position the product carrier 100. The same can be said for other mechanisms. Each mechanism can perform its own actions based on the position of one or more previous mechanisms, thereby achieving the operation process of a fully automatic current sensor-based test device.

[0045] The product carrier 100 is used to carry at least one row of current sensors 103 and is configured to be movable to a designated position. Figure 2 FIG. 1 is a schematic diagram showing the structure of a product carrier 100 according to an embodiment of the present disclosure. The product carrier 100 performs the functions of loading, transporting, and transferring the current sensor 103. Figure 2 In the figure, the product carrier 100 comprises a carrier base 101, a plurality of sensor shaped seats 102 arranged in at least one row, and a busbar support 104, disposed on the carrier base. The sensor shaped seats 102 receive current sensors 103, and the busbar support 104 supports a first busbar 405 through which the current sensors 103 pass. As shown in the figure, the current sensors 103 can be arranged in multiple rows, such as two rows shown. Each current sensor 103 in each row has a central perforation arranged correspondingly along the row. For example, the "row" arrangement can be along the X-axis.

[0046] In some embodiments, product carrier 100 can be pre-tested through simulations to determine product spacing and arrangement order. Specifically, the sensor locators 102 and current sensors 103 on carrier base 101 can be adjusted based on the simulation results to meet multi-batch production requirements. The simulations provide insights into eliminating electromagnetic interference, magnetic field interference, potential difference interference, and other factors that could negatively impact product performance.

[0047] The lifting and positioning mechanism 200 is used to position the product carrier 100 based on the product carrier 100 reaching the designated position. Figure 3 FIG. 2 is a schematic diagram showing the structure of a lifting and positioning mechanism 200 in an embodiment of the present disclosure. The lifting and positioning mechanism 200 includes: a carrier support plate 202, at least one upper and lower guide column 203, and a horizontal positioning assembly.

[0048] The upper surface of the carrier top support plate 202 is used to support the product carrier 100. In some embodiments, to enhance the positioning and alignment effect of the carrier top support plate 202 on the product carrier 100, positioning pins 201 may be provided on the upper surface of the carrier top support plate 202, and the carrier bottom plate of the product carrier 100 may be provided with positioning pin sleeves 105 that fit over the positioning pins 201.

[0049] Each of the upper and lower guide columns is connected to the carrier top support plate 202 and can be raised and lowered. Exemplarily, a plurality of the upper and lower guide columns can be provided, respectively located at different positions of the carrier top support plate 202, and operate synchronously to stabilize the lifting and lowering. The horizontal positioning assembly includes a push-pull power source component 204, and a sliding block 205 driven by the push-pull power source component 204 to move horizontally, and the sliding block 205 moves horizontally to press the product carrier 100 to position it. Exemplarily, the push-pull power source component 204 drives the sliding block 205 to clamp the product carrier 100 in the horizontal direction to limit the movement of the product carrier 100 in the horizontal X and Y axis directions. In a specific application example, a positioning pin 201 is fixed on the upper surface of the carrier top support plate 202, and upper and lower guide columns 203 are fixed on the lower surface. A push-pull power source component 204 is fixed on the left side of the structure in the figure. The push-pull power source component 204 drives the sliding block 205 to move left and right as shown in the figure, so as to clamp and position the product carrier 100 to prevent the product carrier 100 from moving forward, backward, left and right.

[0050] The connector plug-in mechanism 300 is used to obtain the positioning based on the product carrier 100 and drive the connector 307 to be plugged into each of the positioned current sensors 103. The connector 307 includes a "pin". Figure 4FIG2 is a schematic diagram showing the structure of a connector plug-in / plug-out mechanism 300 according to an embodiment of the present disclosure. The connector plug-in / plug-out mechanism 300 includes: a connector 307 base plate 302; a mechanism support plate 303, a movable power source component 304, and a sliding sleeve assembly 308, which are disposed on the connector base plate 302. The sliding sleeve assembly 308 includes a slide rod fixedly connected to the mechanism support plate 303, and a sliding sleeve that can slide relative to the slide rod. The movable power source component 304 is connected to and drives the mechanism support plate 303. The movable power source component 304 can be, for example, a pneumatic cylinder, a hydraulic cylinder, etc. The connector plug-in / plug-out mechanism 300 also includes an up-and-down adjustment screw rod 306, which is connected to and adjusts the lifting position of the connector 307 base plate 302. For example, the connector plug-in / plug-out mechanism 300 can also include a manual displacement platform 305, which is connected to and can be used to adjust the up-and-down adjustment screw rod 306. At least one row of connectors 307 is provided on the mechanism support plate 303 to move with the mechanism support plate 303 to be plugged into at least one row of current sensors 103. The connectors 307 are plugged into the current sensors 103 to obtain sensing signals from the current sensors 103.

[0051] As shown in the figure, the vertical adjustment screw 306 can be used to adjust the vertical position of the connector base plate 302 and the connector 307 mounted thereon. The sliding sleeve assembly 308 can be used to adjust the horizontal position of the connector 307 relative to the current sensor 103, thereby automatically moving it into position and completing the insertion of the connector 307. In a specific application example, after the lifting and positioning mechanism 200 has positioned the product carrier 100, the mobile power source component 304 drives the connector 307, and the sliding sleeve assembly 308 moves horizontally, such as in the X-axis direction, and the connector 307 is inserted into the slot of the current sensor 103 to complete the insertion.

[0052] In some embodiments, the connector 307 is made of nylon, which provides an automatic correction function. Specifically, the connector 307 is inserted into the slot of the current sensor 103 product and is combined with the current sensor 103 product. Its nylon material can reduce product appearance damage and quick replacement after wear and tear.

[0053] The test bus mechanism 400 is used to drive the first bus 405 to move to the test position based on the completion of the plug-in connection of the connector 307, where the first bus 405 is provided with the positioned current sensors 103. Figure 5 FIG. 1 is a schematic diagram showing the structure of a test bus mechanism 400 according to an embodiment of the present disclosure. Figure 5In the embodiment, the test bus mechanism 400 includes: a support base 402, a bus fixing base 404, a first servo drive module 401, and a second servo drive module 403. The support base 402 is slidable along a first horizontal direction, which may be the Y-axis direction. The bus fixing base 404 is mounted on the support base 402 and carries the second bus 601. The support base 402 and the bus fixing base 404 are slidable along a second horizontal direction, which may be the X-axis direction. The first servo drive module 401 is connected to and drives the support base 402 to slide in the first horizontal direction, i.e., the Y-axis direction. The second servo drive module 403 is connected to and drives the bus fixing base 404 to slide in the second horizontal direction, i.e., the X-axis direction. In some embodiments, the first servo drive module 401 and the second servo drive module 403 may be, for example, servo drive motors, or alternatively, pneumatic or hydraulic cylinders. As shown in the figure, the first bus 405 can be moved along the X-axis and Y-axis with two degrees of freedom to reach the test position. For example, the first bus 405 can be a double-position copper bus, i.e. Figure 8 The structure shown in the figure can be compatible with testing multiple products at a time, such as 20 products.

[0054] In a specific application example, when the product carrier 100, the lifting and positioning mechanism 200, and the connector plug-in mechanism 300 have completed their respective work, the first servo drive module 401 drives the support base 402 to move to the test position, and the second servo drive module 403 drives the bus fixing seat 404 to move the first bus 405 forward to the test position.

[0055] The elastic busbar mechanism 600 includes a second busbar 601 that is capable of elastically moving up and down. Figure 6 FIG. 1 is a schematic diagram showing the structure of an elastic busbar mechanism 600 according to an embodiment of the present disclosure. Figure 6 In the embodiment, the elastic busbar mechanism 600 includes: a tooling shell 604 , at least one first busbar 405 , and a lifting power source component 603 .

[0056] The tooling housing 604 forms at least one groove. Each of the at least one second busbars 601 is stacked on a spring support plate 602 and positioned within a groove. The diagram illustrates a pair of second busbars 601. The lifting power source component 603 is connected to and drives the tooling housing 604 up and down. In some embodiments, the lifting power source component 603 can be located at the bottom of the tooling housing 604 and can be, for example, a pneumatic cylinder or a hydraulic cylinder.

[0057] The bus moving mechanism 500 is used to drive a third bus 501 to move along the up and down direction based on the first bus 405 reaching the test position. Figure 7 , showing a schematic structural diagram of a converging movement mechanism 500 in one embodiment of the present disclosure. Figure 7 In the embodiment, the convergence movement mechanism 500 includes: a support plate 501, upper and lower guide columns 502, an auxiliary support plate 505, a spring pressure plate 506 and a third bus 501. The upper ends of the upper and lower guide columns 502 are positioned to the support plate 501, and the lower ends are extended downward. The auxiliary support plate 505 is fixedly connected to the lower ends of the upper and lower guide columns 502, and can move up and down under the guidance of the upper and lower guide columns 502. The spring pressure plate 506 is fixedly provided on the lower surface of the auxiliary support plate 505. The third bus 501 is fixedly connected to the side of the auxiliary support plate 505. The upper and lower driving power source components 503 are connected to and drive the upper and lower movements of the auxiliary support plate 505. For example, the upper and lower driving power source components 503 can be cylinders or hydraulic cylinders.

[0058] In some embodiments, the second busbar 601 can be made of T2 copper with a diameter of 18 mm to 20 mm or greater; and / or the second busbar 601 can be gold-plated. According to calculations, the copper busbar has a diameter ≥ Φ(T2 - copper 18-20 mm) and exhibits excellent electrical and thermal conductivity, corrosion resistance, and processability, making it suitable for welding and brazing. It also contains minimal impurities that reduce electrical and thermal conductivity. The second busbar 601 is also gold-plated for enhanced conductivity.

[0059] In terms of orientation, the second busbar 601 and the first busbar 405 located at the test position are arranged in the vertical direction, so that during the downward movement, the first electrical connection portion and the second electrical portion of the third busbar 501 are in conductive contact with the first busbar 405 and the second busbar 601 respectively, to form a conductive path. Specifically, the elasticity of the elastic busbar mechanism 600 can automatically correct the contact surface to ensure that the second busbar 601 can maintain contact with the entire contact surface of the third busbar 501. After the third busbar 501 contacts the upper surface of the second busbar 601, the spring support plate 602 automatically descends into place, and the lifting power source component 603 is lifted up to ensure that the third busbar 501 and the second busbar 601 are tightly combined together.

[0060] Further, please refer to Figure 8 , showing the schematic diagram of the specific structure and electrical contact method of the third bus 501, the second bus 601 and the first bus 405. Figure 8As shown, the first busbar 405 includes a first conductive segment 451, a second conductive segment 452, and a third conductive segment 453. The first conductive segment 451 and the second conductive segment 452 are arranged in parallel and are electrically connected to each other through the third conductive segment 453. The second busbar 601 includes a first conductive body 611 and a second conductive body 612 that are separated from each other and extend in a horizontal plane. The third busbar 501 includes a third conductive body 511 and a fourth conductive body 512 that are separated from each other and extend vertically. The lower ends of the third conductive body 511 and the fourth conductive body 512 form the first electrical connection portion, which is used for electrically connecting with the first conductive segment 451 and the second conductive segment 452 during vertical movement. The upper ends of the third conductive body 511 and the fourth conductive body 512 are bent to form the second electrical connection portion, which is used for electrically connecting with the first conductive body 611 and the second conductive body 612 during vertical movement.

[0061] In a specific application example, a double-fitting test process is adopted. When working, the product is placed in the product carrier 100. After the product carrier 100, the lifting and positioning mechanism 200, the connector plugging mechanism 300, and the test bus mechanism 400 are in place, the power source component 503 is driven up and down to drive the guide column 504, the auxiliary support plate 505, the product spring pressure plate 506, and the third bus 501 to descend synchronously. The third bus 501 first contacts the upper surface of the double-position copper bus 405 composed of the test bus mechanism 400, and then contacts the upper surface of the second bus 601 formed by the elastic bus mechanism 600. The three buses are all tightly combined together as shown in FIG. Figure 8 As shown, ensure smooth electrical conduction.

[0062] In some embodiments, the first busbar 405, the second busbar 601, and the third busbar 501 can be copper busbars. For example, the busbars and the spacing between them can be determined through testing, primarily to eliminate electromagnetic interference, magnetic field interference, potential difference interference, and other interference that may affect the performance of the test product, thereby improving the reliability of the device.

[0063] like Figure 9 FIG. 1 is a flow chart showing a current fitting test method based on a current sensor in an embodiment of the present disclosure. The current fitting test method can be applied to the test equipment in the previous embodiment.

[0064] exist Figure 9 In the method, the method specifically includes:

[0065] Step S901: Load at least one row of current sensors onto a product carrier and move the carrier to a designated position;

[0066] Step S902: In response to the product carrier arriving at the designated position, positioning the product carrier;

[0067] Step S903: in response to the product carrier obtaining the positioning, driving the connector to be plugged into each of the positioned current sensors;

[0068] Step S904: in response to the completion of the plug-in connection of the connector, driving the first busbar to move to a test position, where the first busbar is penetrated by the positioned current sensors;

[0069] Step S905: Determine the upper and lower positions of the second busbar so that the spacing between the second busbar and the first busbar is suitable for the height of the third busbar. For example, the upper and lower positions of the second busbar are set by adjusting the upper and lower adjustment screws.

[0070] Step S906: In response to the first bus bar reaching the test position, driving a third bus bar to move in the up-down direction, and during the movement, the first electrical connection portion and the second electrical portion of the third bus bar are in conductive contact with the first bus bar and the second bus bar respectively in sequence to form a conductive path;

[0071] Step S907 : performing a current fitting test on each current sensor based on the current flowing through the conductive path.

[0072] In some embodiments, the current fitting test method includes: synchronously accessing and placing the current sensor via the product carrier during the current fitting test process. In a specific application example, manual waiting time for product access and placement can be eliminated while the device is operating; the product carrier can synchronously access and place products during the fitting test process. Tests have shown that the average cycle time is within 15 seconds, and the fitting test of 20 products can be completed, effectively improving efficiency and eliminating the extensive manual waiting time required by existing technologies.

[0073] In some embodiments, the current fitting test method includes: automatically recording and analyzing the process parameters of the current sensor during the current fitting test, such as fitting test parameters, downforce of power source components and other process parameters. Automatic collection, recording and judgment can be achieved during the fitting test to meet the needs of information and intelligent production.

[0074] In summary, the present disclosure provides a current sensor-based testing device and method, comprising: a product carrier for loading at least one row of current sensors; a lifting and positioning mechanism; a connector plugging and unplugging mechanism for driving the connectors to plug into each positioned current sensor; a test bus mechanism for driving a first bus to move to a test position upon completion of connector plugging, where the first bus is threaded with each positioned current sensor; an elastic bus mechanism, wherein a second bus is arranged vertically with the first bus at the test position; and a bus moving mechanism for driving a third bus to move vertically upon the first bus reaching the test position, where the first electrical connection portion and the second electrical portion of the third bus are in conductive contact with the first bus and the second bus, respectively, to form a conductive path. This system enables fully automated transportation, connector plugging, bus connection, and testing of current sensors, eliminating manual reliance and significantly improving efficiency and reliability.

[0075] The above embodiments are merely illustrative of the principles and effects of this disclosure and are not intended to limit this disclosure. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of this disclosure. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical concepts disclosed herein shall be covered by the claims of this disclosure.

Claims

1. A test device based on a current sensor, characterized in that: include: A product carrier for carrying at least one row of current sensors and configured to move to a specified position; A lifting and positioning mechanism, configured to position the product carrier upon the product carrier reaching the designated position; A connector plugging and unplugging mechanism, configured to obtain the positioning of the product carrier and drive the connector to be plugged into each of the positioned current sensors; A test bus mechanism, configured to drive the first bus to a test position based on completion of the plug-in connection of the connector, where the first bus is penetrated by the positioned current sensors; The elastic bus mechanism includes a second bus that is elastically movable up and down; the second bus is arranged in a vertical direction with the first bus located at the test position; a busbar moving mechanism, configured to drive a third busbar to move in the up-down direction based on the first busbar reaching the test position, and wherein during the movement, the first electrical connection portion and the second electrical connection portion of the third busbar are in conductive contact with the first busbar and the second busbar, respectively, in sequence, to form a conductive path; The bus moving mechanism includes: a support plate; upper and lower guide posts, the upper ends of which are positioned to the support plate and the lower ends of which extend downward; an auxiliary support plate, fixedly connected to the lower ends of the upper and lower guide posts, and guided by the upper and lower guide posts to move up and down; a spring pressure plate, fixedly provided on the lower surface of the auxiliary support plate; and the third bus bar, fixedly connected to the side surface of the auxiliary support plate. An up and down driving power source component is connected to and drives the auxiliary support plate to move up and down; The elastic bus mechanism includes: a tooling shell, forming at least one groove; at least one second bus, each second bus is stacked on a spring support plate and arranged in one of the grooves; a jacking power source component, connected to and driving the tooling shell to move up and down.

2. The current sensor-based testing device according to claim 1, characterized in that: The product carrier includes: carrier floor; Each group of sensor shaped seats and busbar support seats arranged in at least one row are arranged on the carrier bottom plate; the sensor shaped seats are used to receive current sensors, and the busbar support seats are used to support the first busbar through which the current sensor is passed.

3. The current sensor-based testing device according to claim 1, characterized in that: The lifting and positioning mechanism comprises: A carrier top support plate, the upper surface of which is used to support the product carrier; At least one upper and lower guide column connected to the carrier top support plate and arranged to be raised and lowered; The horizontal positioning assembly includes a push-pull power source component and a sliding block driven by the push-pull power source component to move horizontally. The sliding block moves horizontally to press the product carrier to position it.

4. The current sensor-based testing device according to claim 1 or 3, characterized in that: A matching positioning pin and positioning pin sleeve are formed between the lifting and positioning mechanism and the product carrier.

5. The current sensor-based testing device according to claim 1, characterized in that: The connector plugging and unplugging mechanism comprises: Connector base plate; A mechanism support plate, a mobile power source component, and a sliding sleeve assembly are provided on the connector base plate; the sliding sleeve assembly includes a slide rod fixedly connected to the mechanism support plate, and a sliding sleeve that can slide relatively and sleeve around the slide rod; the mobile power source component is connected to and drives the mechanism support plate; Adjust the screw rod up and down to connect and adjust the lifting position of the connector base plate; At least one row of connectors is provided on the mechanism support plate so as to move along with the mechanism support plate to be plugged with at least one row of current sensors.

6. The current sensor-based testing device according to claim 1, characterized in that: The test bus mechanism comprises: A supporting base plate slidably arranged along a first horizontal direction; A busbar fixing seat slidably arranged along a second horizontal direction is arranged on the supporting base plate and is loaded with the second busbar; the second horizontal direction is perpendicular to the first horizontal direction; a first servo drive module, connected to and driving the support base to slide in the first horizontal direction; The second servo drive module is connected to and drives the busbar fixing seat to slide in the second horizontal direction.

7. The current sensor-based testing device according to claim 1, characterized in that: The first busbar has a first conductive segment, a second conductive segment, and a third conductive segment. The first conductive segment and the second conductive segment are arranged in parallel and are conductively connected to each other through the third conductive segment. The second busbar has a first conductor and a second conductor that are separated from each other and extend in a horizontal plane. The second busbar has a third conductor and a fourth conductor that are separated from each other and extend up and down. The lower ends of the third conductor and the fourth conductor form the first electrical connection portion, which is used for conductive contact with the first conductive segment and the second conductive segment respectively during up and down movement. The upper ends of the third conductor and the fourth conductor are bent to form a second electrical connection portion, which is used for conductive contact with the first conductor and the second conductor respectively during up and down movement.

8. The current sensor-based testing device according to claim 1, characterized in that: The second busbar is made of T2 copper and has a diameter of 18 mm to 20 mm or more; and / or the surface of the second busbar is gold-plated.

9. The current sensor-based testing device according to claim 1, characterized in that: The connector is made of nylon.

10. A current fitting test method based on a current sensor, characterized in that: Using the testing device according to any one of claims 1 to 9, the method comprises: Load at least one row of current sensors onto a product carrier and move it to a designated position; In response to the product carrier arriving at the designated location, positioning the product carrier; In response to the product carrier obtaining the positioning, driving the connector to be plugged into each of the positioned current sensors; In response to the completion of the plug-in connection of the connector, the first bus is driven to move to a test position, where the first bus passes through each of the positioned current sensors; Determine the upper and lower positions of the second busbar so that the spacing between the second busbar and the first busbar is suitable for the height of the third busbar; In response to the first bus bar reaching the test position, driving a third bus bar to move along the up-down direction, and during the movement, the first electrical connection portion and the second electrical connection portion of the third bus bar are in conductive contact with the first bus bar and the second bus bar respectively in sequence to form a conductive path; A current fitting test is performed on each current sensor based on the current flowing through the conductive path.

11. The current fitting test method according to claim 10, characterized in that: include: Synchronously with the current fitting test process, the current sensor is picked up and placed by the product carrier.

12. The current fitting test method according to claim 10, characterized in that: include: Automatically record and analyze the process parameters of the current sensor during the current fitting test.

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