Detection tool and detection system

Abstract

The utility model discloses a detection tool and a detection system, relates to the technical field of batteries, and can solve the technical problems that the test efficiency is low, and the full detection requirement of a current sensor cannot be met within limited production time in the prior art. The detection tool comprises a base, a plurality of connecting assemblies and a power supply assembly. The base comprises a detection circuit. The plurality of connecting assemblies are arranged on the base, the plurality of connecting assemblies are electrically connected with the detection circuit, the connecting assemblies are in one-to-one correspondence with the current sensors, each connecting assembly comprises a positioning part and a power connection part, the positioning parts are used for positioning the current sensors, and the power connection parts are used for being electrically connected with the contact pins; the power supply assembly is arranged on the base and used for supplying power to the multiple current sensors installed on the multiple connecting assemblies.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery, in particular to a detection tool and a detection system. BACKGROUND

[0002] As the core electronic component in the high-voltage box of the BMS (Battery Management System), the current sensor undertakes the task of real-time monitoring of the charging and discharging current of the battery pack. Its measurement accuracy and reliability are directly related to the accuracy of the SOC (State of Charge) calculation of the vehicle battery pack, and are the basis for ensuring the safety and performance of the vehicle. With the increasing strictness of the industry's quality requirements for the BMS, the outgoing inspection standard of the current sensor has been upgraded from the past sampling inspection to 100% full inspection.

[0003] In the related art, a one-to-one special test tool is used for the current sensor in the test process, and specifically one set of test tool is designed to be able to install only one current sensor.

[0004] However, due to the one-to-one mode of the test tool and the current sensor, each test tool can only test one current sensor at a time when testing a batch of current sensors, which prolongs the test time, resulting in the technical problem of low test efficiency and the inability to complete the full inspection requirement of the current sensor within a limited production time. UTILITY MODEL CONTENT

[0005] To solve the above technical problems, the present application provides a detection tool and a detection system, which can simultaneously test multiple current sensors to meet the efficient full inspection requirement of the current sensor.

[0006] The present application is implemented through the following technical solutions.

[0007] The first aspect of the present application provides a detection tool for detecting a current sensor, the current sensor comprising a pin, the detection tool comprising: a base comprising a detection circuit; a plurality of connection assemblies provided on the base and electrically connected to the detection circuit, each connection assembly corresponding to one current sensor, the connection assembly comprising a positioning portion and an electrical connection portion, the positioning portion being used for positioning the current sensor, and the electrical connection portion being used for electrically connecting the pin; and a power supply assembly provided on the base, the power supply assembly being used for supplying power to the plurality of current sensors mounted on the plurality of connection assemblies.

[0008] By providing a plurality of connection assemblies on the base, each connection assembly can fix the current sensor through the positioning portion and enable the current sensor to access the detection circuit through the electrical connection portion, so that the detection tool of the present application can simultaneously test multiple current sensors.

[0009] Specifically, during the testing process, the operator installs a plurality of current sensors on a plurality of connection assemblies respectively, each current sensor is positioned by the positioning portion on the corresponding connection assembly, after positioning is completed, the pin on each current sensor forms stable electrical connection with the power connection portion on the connection assembly where the current sensor is located, and the power supply assembly is connected with the plurality of current sensors. At this time, the signal output ends of all current sensors are connected in parallel through the respective power connection portions and are connected to the detection circuit in the base.

[0010] Subsequently, the power supply assembly simultaneously provides working power to all installed current sensors, so that the plurality of current sensors can simultaneously perform testing work, and the detection circuit can collect and process the electrical signals output by the plurality of current sensors.

[0011] In summary, compared with the scheme in the related art that one set of testing tooling can test only one current sensor at a time, the present application sets a plurality of connection assemblies, so that the testing tooling has the capability of testing a plurality of current sensors in parallel, and the testing process is changed from the single current sensor "loading - testing - unloading" one-by-one testing mode to the plurality of current sensors "simultaneous loading - synchronous testing - simultaneous unloading" parallel testing mode, thereby compressing the accumulated testing time length in the related art to close to the single testing time length, and further shortening the total testing time length of the plurality of current sensors, so that the total testing time length can be less than or equal to the predetermined production time.

[0012] Therefore, it can be seen that the present application solves the technical problem of low testing efficiency in the related art, which cannot complete the full inspection requirement of the current sensor within the limited production time, and achieves the technical effects of improving the testing efficiency of the current sensor and reducing the testing cost of the current sensor.

[0013] In some embodiments of the present application, the base includes a plurality of mounting positions, the mounting positions correspond to the connection assemblies one by one, and the connection assemblies are detachably connected with the mounting positions.

[0014] Here, the detection tooling provided by this embodiment can change the number and distribution mode of the connection assemblies on the detection tooling when the configuration of the detection tooling needs to be adjusted, and further match the corresponding detection requirement, thereby achieving the technical effects of improving the configuration flexibility of the detection tooling and widening the application range of the detection tooling.

[0015] In some embodiments of the present application, the base includes a plurality of busbars, the busbars are electrically connected with the detection circuit, and the busbars form the mounting positions; the connection assembly further includes a plurality of pins, the pins are electrically connected with the power connection portions, and the pins are adapted to the busbars.

[0016] Here, through the plug-in cooperation of the pins and the busbars, the synchronous detachability of electrical connection and mechanical connection is achieved, so that the connection assembly becomes a module that can be independently disassembled, and further the technical effects of reducing the maintenance difficulty and maintenance cost of the detection tooling are achieved.

[0017] In some embodiments of the present application, the base further comprises a first connecting hole forming a mounting position, the connecting assembly further comprises a second connecting hole, and the first connecting hole and the second connecting hole are opposite; the detection tool further comprises a connecting piece, and the connecting piece is arranged in the first connecting hole and the second connecting hole.

[0018] Here, the matching structure of the connecting hole and the connecting piece ensures that the connecting assembly can be accurately locked on the predetermined mounting position of the base. In turn, the technical effects of improving the structural stability of the connecting assembly and reducing the test failure rate are achieved.

[0019] In some embodiments of the present application, the connecting assembly comprises a conductive sheet, and the conductive sheet forms an electrical connection part. When the current sensor is mounted on the positioning part, the conductive sheet abuts against the pin.

[0020] Here, the conductive sheet and the pin are connected in an abutting manner, and there is no relative movement at the contact interface. This eliminates the wear caused by the plugging action, so that the contact impedance of the connection interface can remain stable during repeated use. In turn, the technical effects of reducing the test loss of the pin, improving the test reliability, and prolonging the service life of the current sensor are achieved.

[0021] In some embodiments of the present application, two conductive sheets form a group, each group of conductive sheets is connected with one pin, and the two conductive sheets in the same group are symmetrically arranged to form a slot therebetween. The slot is used to accommodate the end of the pin and abuts against the end of the pin.

[0022] Here, the two symmetrically arranged conductive sheets form a double-sided clamping of the pin, achieving the technical effect of improving the stability of the electrical connection. The guiding effect of the slot enables the pin to be automatically centered during insertion, achieving the technical effect of reducing the installation difficulty. In addition, the simultaneous contact of the two conductive sheets with the pin forms a parallel circuit. Even if the contact resistance of one contact point increases due to contamination or oxidation, the other contact point can still maintain normal conduction. In turn, the technical effects of improving the stability of the electrical connection and improving the test accuracy are achieved.

[0023] In some embodiments of the present application, in the depth direction of the slot, the width of the slot gradually decreases.

[0024] Here, in the scheme provided in this embodiment, the inner wall of the slot forms a guide slope. Even if there is a certain deviation of the pin at the opening insertion position of the slot, the pin can still be automatically guided to the centered position under the action of the guide slope. In turn, the technical effect of reducing the assembly difficulty of the current sensor is achieved.

[0025] In some embodiments of the present application, the current sensor further comprises a groove, the pin is located in the groove, the connecting assembly further comprises a limiting block, the limiting block forms a positioning part, the limiting block comprises a matching protrusion and a supporting surface, the electrically connecting part is arranged on the matching protrusion, the matching protrusion is matched with the groove, and the supporting surface is used to support the current sensor.

[0026] Here, the precise positioning of the current sensor is achieved through the nested matching of the groove and the matching protrusion, and the process of inserting the matching protrusion into the groove ensures the automatic centering of the pin and the electrically connecting part, so that the pin can accurately and correctly form an electrical connection with the electrically connecting part, thereby realizing the technical effects of reducing the assembly difficulty of the current sensor and improving the reliability of the electrical connection.

[0027] In some embodiments of the present application, the current sensor further comprises a power supply jack, the power supply assembly comprises two conductive parts and a power supply column, the conductive parts are used to connect the first external power supply, the power supply column connects the two conductive parts, a plurality of connecting assemblies are distributed between the two conductive parts along the axial direction of the power supply column, and the power supply column is used to penetrate through a plurality of power supply jacks on a plurality of current sensors.

[0028] Here, the power supply column realizes the synchronous power supply of a plurality of current sensors, all the current sensors connected in series on the power supply column simultaneously obtain the working current required for testing, without the need to establish a power supply connection for each sensor, which not only reduces the number of connection points and improves the power supply reliability, but also improves the consistency of the test conditions of each current sensor through a unified power supply path.

[0029] In some embodiments of the present application, the conductive part comprises a conductive block and a fixing member, the conductive block is arranged on the base, the conductive block comprises a containing groove and a fixing hole, the fixing hole is in communication with the containing groove, the power supply column is arranged in the containing groove, the fixing member is arranged in the fixing hole, and the end of the fixing member abuts against the peripheral side surface of the power supply column.

[0030] Here, the power supply column is supported and positioned through the containing groove and locked through the pressing force of the fixing member, thereby realizing the technical effects of improving the positioning stability of the power supply column and the reliability of the electrical connection, and ensuring that a plurality of current sensors obtain continuous and stable current supply during testing.

[0031] In some embodiments of the present application, the conductive part further comprises a wiring end, and the wiring end is detachably connected with the conductive block.

[0032] Here, the detachable connection mode not only ensures the current transmission capacity, but also improves the maintainability, when the wiring end is worn or damaged due to long-term use, the wiring end can be replaced individually without affecting the normal use of the conductive block and the power supply column, thereby realizing the technical effects of reducing the maintenance difficulty and the maintenance cost.

[0033] In some embodiments of the present application, the base further comprises a power supply interface and a test interface, both of which are electrically connected with the detection circuit, the power supply interface is used for connecting a second external power supply, and the test interface is used for outputting test data.

[0034] Here, the function range of the detection tool is widened by integrating multiple test interfaces, and the standardized design of the power supply interface and the test interface enables the detection tool to be flexibly connected to different detection systems without changing the internal structure to adapt to various test scenarios, including but not limited to electrical performance testing, impedance testing, power consumption testing, and precision calibration, thereby achieving the technical effects of improving the practicality of the detection tool and widening the function coverage range of the detection tool.

[0035] In some embodiments of the present application, the base comprises a bottom plate and a circuit board, the circuit board and the power supply assembly are arranged on the bottom plate, the detection circuit is located on the side of the circuit board facing the bottom plate, and the connecting assembly is connected to the side of the circuit board away from the bottom plate.

[0036] Here, the circuit board is kept at a certain distance from the bottom plate by the support, forming a layered layout, which provides a convenient condition for the miniaturization design and lightweight design of the detection tool. Moreover, the detection circuit is protected in the space between the circuit board and the bottom plate, reducing the probability of damage and contamination of the detection circuit. The connecting assembly is located on the outer surface of the circuit board, providing a convenient condition for the disassembly and assembly operation of the current sensor by the operator.

[0037] The second aspect of the present application provides a detection system comprising the detection tool provided by any of the above embodiments, the detection system further comprising: a first external power supply connected with the power supply assembly; a first sensor connected in series between the first external power supply and the power supply assembly; and a first test device connected with the sensor, the first test device being used for detecting the current of the current sensor through the first sensor.

[0038] In the technical scheme of the embodiments of the present application, since the detection tool in any of the above embodiments is included, the same beneficial effects can be achieved.

[0039] In some embodiments of the present application, the detection system further comprises: a second external power supply connected with the detection circuit, used for powering the detection circuit; a second sensor connected with the detection circuit; and a second test device connected with the second sensor, the second test device being used for detecting at least one of the power consumption, impedance, and output value of the current sensor through the second sensor.

[0040] Here, the synchronous detection of multiple performance parameters of the current sensor is achieved, thereby achieving the technical effects of widening the function coverage range and reducing the test cost.

[0041] In some embodiments of this application, the detection system further includes a vibration table, on which the detection fixture is disposed, and the vibration table is used to drive the detection fixture to vibrate.

[0042] This enables the detection system to perform live vibration testing, allowing it to test the working stability and reliability of current sensors under vibration conditions. This, in turn, broadens the testing coverage and improves the yield rate of current sensors.

[0043] In some embodiments of this application, the detection system further includes a test chamber, which includes a cavity, and a detection fixture is disposed within the cavity. The test chamber is used to adjust the environmental parameters of the cavity, including at least one of temperature, humidity, and air pressure.

[0044] Here, the detection system is equipped with environmental adaptability testing capabilities. Specifically, by placing the detection device in a controlled environment, the performance of the current sensor under the influence of environmental factors can be evaluated, thereby expanding the testing coverage and improving the yield rate of the current sensor. Attached Figure Description

[0045] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0046] Figure 1 This is a schematic diagram of the structure of the testing fixture provided in the embodiments of this application;

[0047] Figure 2 for Figure 1 A partial enlarged view of the detection fixture in region A in the illustrated embodiment;

[0048] Figure 3 for Figure 1 A partial enlarged view of the detection fixture in region B in the illustrated embodiment;

[0049] Figure 4 This is a schematic diagram of the structure of the testing fixture provided in the embodiments of this application;

[0050] Figure 5 This is a schematic diagram of the structure of the connection component of the testing fixture provided in the embodiments of this application;

[0051] Figure 6 This is a schematic diagram of the structure of the testing fixture provided in the embodiments of this application;

[0052] Figure 7 This is a schematic diagram of the structure of the testing fixture provided in the embodiments of this application;

[0053] Figure 8 A structure diagram of an electrical connection part of a detection tool provided in an embodiment of the present application is shown in the figure;

[0054] Figure 9 A structure diagram of an electrical connection part of a detection tool provided in an embodiment of the present application is shown in the figure;

[0055] Figure 10 A structure diagram of a detection tool provided in an embodiment of the present application is shown in the figure;

[0056] Figure 11 A structure diagram of a current sensor provided in an embodiment of the present application is shown in the figure; Figure 10 A partial enlarged view of the detection tool in the embodiment shown in the figure in the C area;

[0057] Figure 12 A structure diagram of a circuit board of a detection tool provided in an embodiment of the present application is shown in the figure;

[0058] Figure 13 A structure diagram of a circuit board of a detection tool provided in an embodiment of the present application is shown in the figure;

[0059] Figure 14 A structure diagram of a bottom plate of a detection tool provided in an embodiment of the present application is shown in the figure;

[0060] Figure 15 A detection data diagram of a current sensor in the related art is shown in the figure;

[0061] Figure 16 A detection data diagram of a current sensor provided in an embodiment of the present application is shown in the figure;

[0062] Figure 17 A structure diagram of a detection system provided in an embodiment of the present application is shown in the figure;

[0063] Figure 18 A structure diagram of a detection system provided in an embodiment of the present application is shown in the figure;

[0064] Figure 19 A structure diagram of a detection system provided in an embodiment of the present application is shown in the figure;

[0065] Figure 20 A structure diagram of a detection system provided in an embodiment of the present application is shown in the figure.

[0066] Explanation of reference numerals:

[0067] 1000-detection system; 100-detection tool; 110-base; 111-detection circuit; 112-mounting site; 1121-busbar; 1122-first connecting hole; 113-power supply interface; 114-test interface; 115-bottom plate; 116-circuit board; 120-connecting assembly; 121-positioning part; 1211-limiting block; 1212-mating protrusion; 1213-supporting surface; 122-electricity connecting part; 123-needle; 124-second connecting hole; 125-conductive sheet; 1251-slot; 126-adapter plate; 130-power supply assembly; 131-conductive part; 1311-conductive block; 1312-receiving groove; 1313-fixing piece; 1314-wiring terminal; 132-conductive column; 200-current sensor; 210-needle; 220-groove; 230-power supply jack; 300-first external power supply; 310-first sensor; 311-standard resistor; 312-base; 320-first test equipment; 330-test current line; 340-shielding box; 400-second external power supply; 410-second sensor; 411-first multi-channel acquisition card; 412-second multi-channel acquisition card; 413-power consumption test module; 414-test board; 415-first relay board; 416-second relay board; 417-converter; 418-relay box; 420-second test equipment; 500-vibration table; 600-test box; 610-cavity. DETAILED DESCRIPTION

[0068] The embodiments of the technical solution of the present application will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0069] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification and claims of the present application and the above description of drawings are intended to cover non-exclusive inclusion.

[0070] In the description of the embodiments of the present application, the technical terms "first", "second", "third" and the like are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0071] Reference to "an embodiment" herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase "in an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. It is expressly understood that any of the embodiments described herein can be incorporated into any other embodiment.

[0072] In the description of the embodiments of the application, the term "and / or" is merely an association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " herein generally represents an "or" relationship between the front and rear associated objects.

[0073] In the description of the embodiments of the application, the technical terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "circumferential", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, be operated or used in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the application.

[0074] In the description of the embodiments of the application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connection", "connection", "fixing", and the like should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the application can be understood according to the specific circumstances.

[0075] In the description of the embodiments of the application, unless otherwise explicitly specified and limited, the technical term "contact" should be understood in a broad sense, which can be direct contact or contact through an intermediate medium layer, and can be contact between two objects in contact without interaction force, or contact between two objects in contact with interaction force.

[0076] The application will be described in detail below.

[0077] As a core electronic component in the BMS high-voltage box, the current sensor is the basis for ensuring the safety and performance of the vehicle. With the increasing strictness of the industry's quality requirements for BMS, the factory test standard of the current sensor has been upgraded from the past sampling inspection to full inspection.

[0078] In the related art, a current sensor adopts a one-to-one special test tool in a test process. Specifically, one set of test tool is designed to be capable of mounting only one current sensor.

[0079] Since the test tool and the current sensor adopt a one-to-one test mode, the test capacity of each test tool is limited to single piece each time. When batch testing is performed, the test of each current sensor includes multiple time-consuming links such as manual or mechanical feeding and discharging, tool docking, test execution, and data recording. The time consumed by these links is repeatedly accumulated and cannot be overlapped under the batch test demand, so that the total test time linearly increases with the number of current sensors.

[0080] In addition, during the test process, the test of the next current sensor cannot be started until the test of the previous current sensor is completely finished and unloaded. There is idle waiting time between the two test processes that cannot be effectively utilized.

[0081] Therefore, the one-to-one test scheme in the related art needs to consume a large amount of time when facing the full inspection demand of a large number of current sensors, so that there is a technical problem of low test efficiency, which cannot complete the full inspection demand of the current sensor within a limited production time.

[0082] To this end, the test tool needs to be improved so that the test tool can simultaneously detect multiple current sensors.

[0083] Based on such a design concept, the present application provides a detection tool 100 and a detection system 1000 to meet the efficient full inspection demand of the current sensor 200.

[0084] The detection tool 100 is used for detecting the current sensor 200. The current sensor 200 includes a pin 210. The detection tool 100 includes a base 110, the base 110 including a detection circuit 111; a plurality of connection assemblies 120 provided on the base 110, and the plurality of connection assemblies 120 are electrically connected with the detection circuit 111. The connection assembly 120 corresponds to the current sensor 200 one by one. The connection assembly 120 includes a positioning portion 121 and an electrical connection portion 122. The positioning portion 121 is used for positioning the current sensor 200. The electrical connection portion 122 is used for electrically connecting the pin 210. A power supply assembly 130 is provided on the base 110. The power supply assembly 130 is used for supplying power to the plurality of current sensors 200 mounted on the plurality of connection assemblies 120.

[0085] By arranging multiple connecting assemblies 120 on the base 110, and each connecting assembly 120 can fix the current sensor 200 through the positioning part 121, and make the current sensor 200 access the detection circuit 111 through the power connection part 122, so that the detection tool 100 of the application can simultaneously test multiple current sensors 200.

[0086] Specifically, during the test process, the operator installs multiple current sensors 200 on multiple connecting assemblies 120 respectively, and each current sensor 200 is positioned through the positioning part 121 on the corresponding connecting assembly 120. After positioning is completed, the pin 210 on each current sensor 200 will form stable electrical connection with the power connection part 122 on the connecting assembly 120 where it is located, and the power supply assembly 130 is connected with multiple current sensors 200. At this time, the signal output ends of all current sensors 200 are connected in parallel through the respective power connection parts 122 and access the detection circuit 111 in the base 110.

[0087] Subsequently, the power supply assembly 130 simultaneously provides working power to all installed current sensors 200, so that multiple current sensors 200 can simultaneously perform test work, and the detection circuit 111 can collect and process the electrical signals output by multiple current sensors 200.

[0088] In summary, compared with the scheme in the related art that one set of test tool can test only one current sensor 200 at a time, the application sets multiple connecting assemblies 120, so that the detection tool 100 has the ability to test multiple current sensors 200 in parallel, and the test process is changed from the single current sensor 200 “loading-test-unloading” one-by-one test mode to the multiple current sensors 200 “simultaneous loading-synchronous testing-simultaneous unloading” parallel test mode, thereby compressing the multiple test time lengths accumulated in the related art to close to a single test time length, and further shortening the total test time length of multiple current sensors 200, so that the total test time length can be less than or equal to the predetermined production time.

[0089] Therefore, the application solves the technical problem of low test efficiency in the related art, which cannot complete the full inspection requirement of the current sensor 200 within the limited production time, and achieves the technical effects of improving the test efficiency of the current sensor 200 and reducing the test cost of the current sensor 200.

[0090] The application embodiment further provides a detection system 1000, which comprises the above detection tool 100.

[0091] In the following, with reference to Figures 1 to 20 Some embodiments of the application are described in detail.

[0092] In some embodiments of the application, reference is made toFigure 1 、 Figure 2 、 Figure 3 and Figure 4 ,

[0093] Figure 1 A structural schematic diagram of a detection tool 100 provided by an embodiment of the present application; Figure 2 A partial enlarged view of the detection tool 100 in the A area in the embodiment shown in Figure 1 A partial enlarged view of the detection tool 100 in the B area in the embodiment shown in Figure 3 A structural schematic diagram of a detection tool 100 provided by an embodiment of the present application, the detection tool 100 is used for detecting a current sensor 200, the current sensor 200 includes a pin 210, and the detection tool 100 includes: Figure 1 Figure 4 A base 110, the base 110 includes a detection circuit 111;

[0094] A plurality of connection assemblies 120 are arranged on the base 110, and the plurality of connection assemblies 120 are electrically connected with the detection circuit 111, the connection assembly 120 corresponds to the current sensor 200 one by one, the connection assembly 120 includes a positioning part 121 and an electrical connection part 122, the positioning part 121 is used for positioning the current sensor 200, and the electrical connection part 122 is used for electrically connecting the pin 210;

[0095] A power supply assembly 130 is arranged on the base 110, and the power supply assembly 130 is used for supplying power to the plurality of current sensors 200 installed on the plurality of connection assemblies 120.

[0096] The base 110 is a rigid structure and is used for bearing and fixing other functional assemblies, the base 110 is internally integrated with the detection circuit 111, the detection circuit 111 can collect detection signals of the current sensor 200 and process the collected detection signals.

[0097] The connection assembly 120 is an independent assembly installed on the base 110, the number of the connection assembly 120 is multiple, and each connection assembly 120 is used for connecting an independent current sensor 200. The positioning part 121 on the connection assembly 120 is a mechanical positioning structure and is used for restraining and fixing the current sensor 200, so that the current sensor 200 can be stably arranged at a predetermined installation position. The electrical connection part 122 is a conductive interface and is used for establishing electrical connection with the pin 210 on the current sensor 200, after the electrical connection between the electrical connection part 122 and the pin 210 is completed, the current sensor 200 can be connected to the detection circuit 111.

[0098]

[0099] ​​The power supply assembly 130 is mounted on the base 110. After the plurality of current sensors 200 are respectively mounted on the plurality of connecting assemblies 120 through the positioning portions 121 and the power connection portions 122, the power supply assembly 130 is connected with the plurality of current sensors 200, so that the power supply assembly 130 can synchronously supply power for the plurality of current sensors 200, specifically, the current sensors 200 are provided with stable test current.

[0100] The power supply assembly 130 can be connected with the first external power supply 300, so as to supply power for the current sensors 200 through the first external power supply 300. The power supply assembly 130 can also be connected to the detection circuit 111 and supply power for the current sensors 200 through the power supply module on the detection circuit 111.

[0101] By arranging the plurality of connecting assemblies 120 on the base 110, and each connecting assembly 120 can fix the current sensor 200 through the positioning portion 121 and enable the current sensor 200 to be connected to the detection circuit 111 through the power connection portion 122, so that the detection tool 100 can simultaneously test the plurality of current sensors 200.

[0102] Specifically, during the test process, the operator installs the plurality of current sensors 200 on the plurality of connecting assemblies 120 respectively. Each current sensor 200 is positioned through the positioning portion 121 on the corresponding connecting assembly 120. After positioning is completed, the pin 210 on each current sensor 200 forms stable electrical connection with the power connection portion 122 on the connecting assembly 120 where the current sensor 200 is located, and the power supply assembly 130 is connected with the plurality of current sensors 200. At this time, the signal output ends of all the current sensors 200 are connected to the detection circuit 111 in the base 110 in parallel through the respective power connection portions 122.

[0103] Subsequently, the power supply assembly 130 simultaneously supplies working power to all the installed current sensors 200, so that the plurality of current sensors 200 can simultaneously perform test work, and the detection circuit 111 can collect and process the electrical signals output by the plurality of current sensors 200.

[0104] In summary, compared with the scheme in the related art that one set of test tool can test only one current sensor 200 at a time, the detection tool 100 has the ability to test the plurality of current sensors 200 in parallel by arranging the plurality of connecting assemblies 120. The test process is changed from the single current sensor 200 “loading-test-unloading” test mode to the plurality of current sensors 200 “simultaneous loading-synchronous test-simultaneous unloading” parallel test mode, so that the plurality of test time lengths in the related art are compressed to close to the single test time length, thereby shortening the total test time length of the plurality of current sensors 200, so that the total test time length can be less than or equal to the predetermined production time.

[0105] Therefore, the application solves the technical problem of low test efficiency in the related art, which cannot complete the full inspection requirement of the current sensor 200 within the limited production time, and achieves the technical effects of improving the test efficiency of the current sensor 200 and reducing the test cost of the current sensor 200.

[0106] In some embodiments of the application, with reference to Figure 5 , Figure 6 , Figure 10 and Figure 11 , Figure 5 a structural schematic diagram of a connecting assembly 120 of a detection tool 100 provided in an embodiment of the application; Figure 6 a structural schematic diagram of a detection tool 100 provided in an embodiment of the application; Figure 10 a structural schematic diagram of a detection tool 100 provided in an embodiment of the application; Figure 11 is a partial enlarged view of the detection tool 100 in the C area in the embodiment shown in Figure 10 The base 110 includes a plurality of mounting positions 112, and the mounting position 112 corresponds to the connecting assembly 120 one by one, and the connecting assembly 120 and the mounting position 112 are detachably connected.

[0107] The base 110 includes a plurality of mounting positions 112, and the mounting position 112 is an interface structure arranged on the base 110, the number of which is consistent with the number of the connecting assembly 120, and the mounting position 112 and the connecting assembly 120 are arranged one by one. The connecting assembly 120 and the corresponding mounting position 112 are detachably connected, and the detachable connection allows the connecting assembly 120 to be individually detached or mounted from the base 110.

[0108] It can be seen that in the detection tool 100 provided in the embodiment, each connecting assembly 120 is independently fixed on a mounting position 112. When it is necessary to adjust the configuration of the detection tool 100, the operator can detach the specified connecting assembly 120 from the mounting position 112. Conversely, the connecting assembly 120 can be mounted to the corresponding mounting position 112 according to the requirement, so as to change the number and distribution mode of the connecting assembly 120 on the detection tool 100, and then match the corresponding detection requirement.

[0109] For example, when testing the current sensor 200 with a smaller size, the connection assembly 120 can be installed on all the mounting positions 112, thereby increasing the number of current sensors 200 tested synchronously. Correspondingly, when testing the current sensor 200 with a larger size, at least one mounting position 112 can be left empty between two adjacent connection assemblies 120 according to the size of the current sensor 200, so as to avoid interference between the two adjacent current sensors 200. In this way, the configuration flexibility of the detection tool 100 is improved, and the application range of the detection tool 100 is widened.

[0110] On this basis, since the connection assembly 120 is detachably connected with the mounting position 112, when a certain connection assembly 120 is worn or damaged due to long-term use, only the connection assembly 120 needs to be replaced, without the need to replace the entire base 110 or the detection tool 100, thereby reducing the maintenance difficulty and cost of the detection tool 100.

[0111] In some embodiments of the present application, referring to Figure 5 and Figure 6 , the base 110 includes a plurality of busbars 1121, the busbars 1121 are electrically connected with the detection circuit 111, and the busbars 1121 form the mounting positions 112; the connection assembly 120 further includes a pin 123, the pin 123 is electrically connected with the power connection part 122, and the pin 123 is adapted with the busbar 1121.

[0112] The mounting positions 112 provided on the base 110 are composed of a plurality of busbars 1121, which are standardized female electrical connectors fixedly installed on the base 110 and have a plurality of interfaces inside. All the busbars 1121 are electrically connected with the detection circuit 111 inside the base 110.

[0113] The connection assembly 120 further includes a pin 123, which is a standardized male electrical connector provided on the connection assembly 120 and has a pin arrangement matched with the interface arrangement of the busbar 1121. The pin 123 is electrically connected with the power connection part 122 on the connection assembly 120, thereby forming a conductive path from the power connection part 122 to the pin 123.

[0114] In the installation of the connection assembly 120, the operator aligns the pin header 123 on the connection assembly 120 with the corresponding pin socket 1121 on the base 110, applies pressure to make the pins of the pin header 123 inserted into the interfaces of the pin socket 1121, and realizes mechanical locking and electrical connection. At this time, the current sensor 200 accesses the detection circuit 111 through the path of the power connection part 122, the pin header 123, and the pin socket 1121. When disassembly is needed, the pin header 123 is pulled out of the pin socket 1121, and the synchronous release of electrical connection and mechanical connection is realized. The plug-in connection mode of the pin header 123 and the pin socket 1121 can provide positioning for the connection assembly 120, thereby improving the positional stability of the connection assembly 120.

[0115] Moreover, compared with the non-detachable connection scheme using welding, wire harness crimping, etc., the embodiment realizes synchronous detachability of electrical connection and mechanical connection through the plug-in cooperation of the pin header 123 and the pin socket 1121. When a certain connection assembly 120 needs to be replaced, the operator only needs to pull down the pin header 123 corresponding to the assembly to isolate it from the detection circuit 111 and remove it, without the need to handle the wires or welding points, so that the connection assembly 120 becomes an independent detachable module, thereby realizing the technical effects of reducing the maintenance difficulty and cost of the detection tool 100.

[0116] In some embodiments of the present application, with reference to Figure 5 , Figure 6 and Figure 13 , Figure 13 the structural schematic diagram of the circuit board 116 of the detection tool 100 provided by the embodiments of the present application

[0117] The base 110 further includes a first connection hole 1122, which is a through hole or a threaded hole provided on the base 110, the position of which corresponds to the mounting position of the connection assembly 120 and forms a mounting position 112. The connection assembly 120 further includes a second connection hole 124, which is a through hole provided on the connection assembly 120, the position of which corresponds to the first connection hole 1122 on the base 110. When the connection assembly 120 is placed in the mounting position 112, the second connection hole 124 and the first connection hole 1122 are coaxial.

[0118] The detection tool 100 further includes a connecting piece, which is specifically a screw or a bolt. In the assembly process, the operator sequentially inserts the connecting piece into the second connection hole 124 and the first connection hole 1122, and realizes fixation through threaded cooperation or nut locking.

[0119] The matching structure of the connecting hole and the connecting piece ensures that the connecting assembly 120 can be precisely locked on the predetermined mounting position 112 of the base 110. The constraint force generated after the two connecting holes are penetrated by the connecting piece enables the connecting assembly 120 to remain stable during the test process, resist the plugging force of the current sensor 200 and external vibration interference, thereby achieving the technical effects of improving the structural stability of the connecting assembly 120 and reducing the test failure rate.

[0120] In some embodiments of the present application, with reference to Figure 5 , Figure 8 and Figure 9 , Figure 8 a structural schematic view of the power connection part 122 of the detection tool 100 provided in the embodiments of the present application is provided; Figure 9 a structural schematic view of the power connection part 122 of the detection tool 100 provided in the embodiments of the present application is provided, the connecting assembly 120 includes the conductive sheet 125, the conductive sheet 125 forms the power connection part 122, and in the case where the current sensor 200 is installed on the positioning part 121, the conductive sheet 125 abuts against the pin 210.

[0121] The connecting assembly 120 includes the conductive sheet 125. The conductive sheet 125 is a conductive part made of a metal material, and specifically, a metal sheet with elasticity can be selected as the conductive sheet 125, and the conductive sheet 125 forms the power connection part 122.

[0122] In the case where the current sensor 200 is installed on the positioning part 121 of the connecting assembly 120, the pin 210 of the current sensor 200 contacts the conductive sheet 125. The conductive sheet 125 is elastically deformed under the pressure of the pin 210 and maintains a stable abutting state with the surface of the pin 210 by virtue of its own elastic restoring force, and this abutting state enables the pin 210 and the conductive sheet 125 to form a conductive path.

[0123] In this embodiment, the conductive sheet 125 and the pin 210 are in surface contact, and during the test process, there is no relative sliding between the pin 210 and the conductive sheet 125, and the detection signal of the current sensor 200 is transmitted to the detection circuit 111 through the pin 210 and the conductive sheet 125.

[0124] Compared with the scheme of connecting the pin 210 by using a buckle structure in the related art, relative movement is generated between the pin 210 and the buckle structure in each plugging and unplugging operation, which causes abrasion of the plating layer on the pin 210. In this embodiment, the conductive sheet 125 and the pin 210 are connected in an abutting manner, and there is no relative movement at the contact interface, which eliminates the abrasion caused by the plugging and unplugging operation, enables the contact impedance of the connection interface to remain stable during repeated use, and thus achieves the technical effects of reducing the test loss of the pin 210, improving the test reliability, and prolonging the service life of the current sensor 200.

[0125] In some embodiments of the present application, with reference to Figure 5 、 Figure 8 and Figure 9 , two conductive sheets 125 form a group, each group of conductive sheets 125 is connected with one pin 210 of the current sensor 200, and the two conductive sheets 125 in the same group are symmetrically arranged and form a slot 1251 therebetween, which is used to accommodate the end of the pin 210 and abuts against the end of the pin 210.

[0126] The connection assembly 120 includes a plurality of groups of conductive sheets 125. Each group of conductive sheets 125 is composed of two conductive sheets 125, which are connected with one pin 210 of the current sensor 200 as a group.

[0127] The two conductive sheets 125 in the same group are symmetrically arranged and form a slot 1251 therebetween. The slot 1251 is a V-shaped or U-shaped guide space used to accommodate the end of the pin 210 during installation. When the current sensor 200 is installed in the positioning portion 121, the end of the pin 210 slides along the guide slope of the slot 1251 and finally abuts against the two conductive sheets 125 in the same group at the same time.

[0128] Under this structure, the end of each pin 210 is simultaneously elastically clamped by two conductive sheets 125, and specifically, the two conductive sheets 125 apply pressure to the pin 210 from opposite directions, so that the pin 210 is kept centered in the slot 1251, and the current is transmitted between the conductive sheet 125 and the pin 210 through two parallel paths, thereby increasing the reliability of conduction.

[0129] As can be seen, the two symmetrically arranged conductive sheets 125 in this embodiment form double-sided clamping of the pin 210, achieve the technical effect of improving the stability of electrical connection, and the guiding effect of the slot 1251 enables the pin 210 to be automatically centered during insertion, thereby achieving the technical effect of reducing the installation difficulty. In addition, the simultaneous contact of the two conductive sheets 125 with the pin 210 forms a parallel circuit, and even if the contact resistance of one of the contact points increases due to contamination or oxidation, the other contact point can still maintain normal conduction, thereby achieving the technical effects of improving the stability of electrical connection and improving the test precision.

[0130] With reference to Figure 15 and Figure 16 , Figure 15 is a detection data diagram of the current sensor 200 in the related art; Figure 16 The detection data diagram of the current sensor 200 provided by the embodiment of the application can be seen that, compared with the scheme of connecting the pin 210 through the buckle structure in the related art, the scheme of abutting the pin 210 by the conductive sheet 125 in the application reduces the loss of the plating layer of the pin 210, and reduces the fluctuation of the resistance value.

[0131] In some embodiments of the application, with reference to Figure 8 and Figure 9 , in the depth direction of the slot 1251, the width of the slot 1251 gradually decreases.

[0132] In the connecting assembly 120, the slot 1251 is formed by two symmetrical conductive sheets 125, and in the depth direction along the insertion of the pin 210, the width of the internal space of the slot 1251 presents a gradually decreasing trend.

[0133] Specifically, the slot 1251 has a larger width at the opening, thereby providing sufficient fault tolerance space for the insertion of the pin 210. As the slot 1251 extends to the inside, the distance between the two conductive sheets 125 gradually decreases, forming a narrowed guide structure. When the pin 210 is inserted in place, the end of the pin 210 and the two conductive sheets 125 at the narrow part of the slot 1251 form elastic abutment at the same time.

[0134] In the scheme provided in this embodiment, the inner wall of the slot 1251 forms a guide slope. Even if there is a certain deviation in the insertion position of the pin 210 at the opening of the slot 1251, it can also be automatically guided to the centered position under the action of the guide slope, thereby realizing the technical effect of reducing the assembly difficulty of the current sensor 200. And, as the insertion depth increases, the clamping force exerted by the two conductive sheets 125 on the pin 210 gradually increases, thereby ensuring the abutment stability of the pin 210 and the conductive sheet 125, providing a guarantee for the accuracy of the test data, thereby improving the test efficiency while further improving the test reliability.

[0135] In some embodiments of the application, with reference to Figure 7 , Figure 7The structure schematic diagram of the detection tool 100 provided by the embodiment of the application, the current sensor 200 further comprises a groove 220, the pin 210 is located in the groove 220, the connecting assembly 120 further comprises a limiting block 1211, the limiting block 1211 forms a positioning part 121, the limiting block 1211 comprises a matching protrusion 1212 and a supporting surface 1213, the electrically connecting part 122 is arranged on the matching protrusion 1212, the matching protrusion 1212 is matched with the groove 220, and the supporting surface 1213 is used for supporting the current sensor 200.

[0136] The current sensor 200 further comprises the groove 220, and the pin 210 is accommodated in the groove 220, so that the end of the pin 210 is located in the opening of the groove 220.

[0137] The connecting assembly 120 further comprises the limiting block 1211, the limiting block 1211 is a rigid structure and forms the positioning part 121. The limiting block 1211 comprises the matching protrusion 1212 and the supporting surface 1213. The matching protrusion 1212 is a structure protruding from the main body of the limiting block 1211 to the current sensor 200, and the shape and size of the matching protrusion 1212 are matched with the groove 220 on the current sensor 200. The electrically connecting part 122 is arranged on the surface or in the interior of the matching protrusion 1212. The supporting surface 1213 is a plane structure on the limiting block 1211 and is used for bearing the shell of the current sensor 200.

[0138] When the current sensor 200 is installed, the operator places the current sensor 200 on the connecting assembly 120, so that the matching protrusion 1212 of the limiting block 1211 is inserted into the groove 220 of the current sensor 200. The inner wall of the groove 220 is matched with the outer surface of the matching protrusion 1212, so that the current sensor 200 is positioned in the horizontal direction. Meanwhile, the lower surface of the shell of the current sensor 200 is in contact with the supporting surface 1213 of the limiting block 1211, the weight of the sensor is borne by the supporting surface 1213, and the current sensor 200 is prevented from tilting in the vertical direction.

[0139] Therefore, the structure of the embodiment realizes accurate positioning of the current sensor 200 through the nested matching of the groove 220 and the matching protrusion 1212, and the process of inserting the matching protrusion 1212 into the groove 220 ensures automatic centering of the pin 210 and the electrically connecting part 122, so that the pin 210 can accurately and correctly form an electrical connection with the electrically connecting part 122, thereby realizing the technical effects of reducing the assembly difficulty of the current sensor 200 and improving the electrical connection reliability. On this basis, the supporting surface 1213 provides a stable bearing basis, and the groove 220 and the matching protrusion 1212 further improve the positioning stability and the electrical connection reliability of the current sensor 200.

[0140] In an alternative embodiment, the limiting block 1211 is connected with the pin array 123 through the adapter plate 126.

[0141] In some embodiments of the present application, with reference to Figure 10 , Figure 11 and Figure 12 , Figure 12 a structural schematic diagram of the current sensor 200 provided by the embodiments of the present application, the current sensor 200 further comprises a power supply jack 230, the power supply assembly 130 comprises two conductive parts 131 and a power supply column, the conductive part 131 is used for connecting the first external power supply 300, the power supply column is connected with the two conductive parts 131, and a plurality of connection assemblies 120 are distributed between the two conductive parts 131 along the axial direction of the power supply column. The power supply column is used for penetrating a plurality of power supply jacks 230 on a plurality of current sensors 200.

[0142] The current sensor 200 further comprises a power supply jack 230, the power supply jack 230 is a through-hole structure penetrating the body of the current sensor 200, and is used for passing through a large current.

[0143] The power supply assembly 130 comprises two conductive parts 131 and a power supply column, the conductive part 131 is a component made of conductive material, and is used for establishing electrical connection with the first external power supply 300. The power supply column is a long straight conductive body, and the two ends thereof are fixedly connected with the two conductive parts 131 respectively, so as to form a complete current path. The plurality of connection assemblies 120 are arranged and distributed between the two conductive parts 131 along the axial direction of the power supply column.

[0144] When the current sensor 200 is installed, the operator sequentially penetrates the power supply jack 230 of each current sensor 200 through the power supply column. The power supply column simultaneously penetrates a plurality of power supply jacks 230 on a plurality of current sensors 200. When the first external power supply 300 is turned on, the current flows from one conductive part 131, is transmitted through the power supply column, flows through all the current sensors 200 connected in series on the power supply column, and finally returns to the power supply from the other conductive part 131, so as to form a complete current loop.

[0145] Therefore, the structure of the embodiment realizes synchronous power supply for a plurality of current sensors 200 through a single power supply column, and all the current sensors 200 connected in series on the power supply column simultaneously obtain the working current required for testing, without the need to establish power supply connection for each sensor individually. This not only reduces the number of connection points and improves the power supply reliability, but also improves the consistency of the test conditions of the current sensors 200 through the unified power supply path. At the same time, the power supply column also provides positioning for a plurality of current sensors 200 by penetrating a plurality of power supply jacks 230, so as to realize the technical effects of improving the positioning accuracy of the current sensor 200 and improving the test reliability.

[0146] In some embodiments of the present application, with reference to Figure 10 and Figure 11The conductive part 131 includes a conductive block 1311 and a fixing member 1313. The conductive block 1311 is arranged on the base 110 and includes a receiving groove 1312 and a fixing hole. The fixing hole is in communication with the receiving groove 1312. The power supply column is arranged in the receiving groove 1312. The fixing member 1313 is arranged in the fixing hole. The end of the fixing member 1313 abuts against the peripheral side surface of the power supply column.

[0147] The conductive part 131 includes a conductive block 1311 and a fixing member 1313. The conductive block 1311 is arranged on the base 110 and includes a receiving groove 1312 and a fixing hole. The fixing hole is in communication with the receiving groove 1312. The power supply column is arranged in the receiving groove 1312. The fixing member 1313 is arranged in the fixing hole. The end of the fixing member 1313 abuts against the peripheral side surface of the power supply column.

[0148] The conductive part 131 includes a conductive block 1311 and a fixing member 1313. The conductive block 1311 is arranged on the base 110 and includes a receiving groove 1312 and a fixing hole. The fixing hole is in communication with the receiving groove 1312. The power supply column is arranged in the receiving groove 1312. The fixing member 1313 is arranged in the fixing hole. The end of the fixing member 1313 abuts against the peripheral side surface of the power supply column.

[0149] Therefore, in the structure provided by the embodiment, the power supply column is supported and positioned by the receiving groove 1312 and locked by the pressing force of the fixing member 1313, thereby improving the positioning stability of the power supply column and the reliability of the electrical connection, and ensuring that the plurality of current sensors 200 can obtain continuous and stable current supply during the test.

[0150] On this basis, compared with the welding or integrated connection scheme, the power supply column provided by the embodiment can be disassembled according to the needs. For example, when the power supply column or the conductive block 1311 needs to be replaced, the connection can be released by loosening the fixing member 1313 without damaging the original structure, thereby achieving the technical effect of reducing the maintenance difficulty and maintenance cost.

[0151] In some embodiments of the present application, referring to Figure 10 and Figure 11 The conductive part 131 further includes a wiring end 1314. The wiring end 1314 is detachably connected with the conductive block 1311.

[0152] The conductive part 131 further includes a wiring end 1314. The wiring end 1314 is a conductive part for connecting the test current line 330. The wiring end 1314 is detachably connected with the conductive block 1311 by a mechanical connection mode.

[0153] Specifically, one end of the terminal 1314 is provided with a columnar positioning structure, and the test current line 330 can be wound thereon, and the other end is provided with a planar contact structure and connected with the conductive block 1311 through a screw or a bolt. When it is necessary to disassemble, the terminal 1314 can be disassembled from the conductive block 1311 by loosening the screw or the bolt.

[0154] It can be seen that, in the structure provided in the embodiment, the detachable characteristic of the conductive block 1311 makes the installation and maintenance of the test current line 330 more convenient. Specifically, the test current line 330 is connected with the conductive block 1311 through the terminal 1314 instead of being directly fixed with the conductive block 1311, so that the entire conductive block 1311 is not replaced when it is necessary to replace the test current line 330 or the terminal 1314.

[0155] Compared with the scheme in which the test current line 330 is directly welded on the conductive block 1311, the detachable connection mode provided in the embodiment improves the maintainability while ensuring the current transmission capability. When the terminal 1314 is worn or damaged due to long-term use, the terminal 1314 can be replaced alone without affecting the normal use of the conductive block 1311 and the power supply column, thereby realizing the technical effects of reducing the maintenance difficulty and the maintenance cost.

[0156] In some embodiments of the present application, with reference to Figure 11 , Figure 12 and Figure 13 , the base 110 further includes a power interface 113 and a test interface 114. The power interface 113 and the test interface 114 are both electrically connected with the detection circuit 111. The power interface 113 is used to connect the second external power supply 400, and the test interface 114 is used to output test data.

[0157] The base 110 further includes a power interface 113 and a test interface 114. The power interface 113 is an electrical connector arranged on the base 110 and used to establish electrical connection with the second external power supply 400. The test interface 114 is a data connector arranged on the base 110 and used to establish data connection with an external test device. The power interface 113 and the test interface 114 are both electrically connected with the detection circuit 111 inside the base 110.

[0158] During the test, the second external power supply 400 supplies power to the detection circuit 111 through the power interface 113. The electrical energy is distributed to each connection assembly 120 through the detection circuit 111 to provide necessary bias voltage or excitation signal for the current sensor 200. The response signal generated by the current sensor 200 is collected and processed by the detection circuit 111 and then transmitted to the external test device through the test interface 114.

[0159] It can be seen that, in the structure provided by the embodiment, the detection tool 100 can work cooperatively with various external devices, the power supply interface 113 provides an independent power supply channel for the detection system 1000, and forms a complement with the first external power supply 300, and respectively meets the power supply requirements of the current sensor 200 and the working requirements of the detection circuit 111. The test interface 114 establishes a data output channel, so that the detection circuit 111 can transmit the collected test data to external data acquisition cards, host computers or program-controlled multimeters and the like in real time.

[0160] Compared with the test tool with single function in the related art, the embodiment expands the functional range of the detection tool 100 by integrating various test interfaces 114, and the standardized design of the power supply interface 113 and the test interface 114 enables the detection tool 100 to be flexibly connected to different detection systems 1000, without the need to change the internal structure to adapt to various test scenarios, specifically including but not limited to electrical performance test, impedance test, power consumption test and precision calibration and the like, thereby achieving the technical effects of improving the practicability of the detection tool 100 and widening the functional coverage range of the detection tool 100.

[0161] In some embodiments of the present application, with reference to Figure 13 and Figure 14 , Figure 14 FIG. 1 is a structural schematic diagram of a detection tool 100 provided by an embodiment of the present application, and FIG. 2 is a structural schematic diagram of a base 110 of the detection tool 100 provided by the embodiment of the present application. As shown in the figures, the base 110 includes a bottom plate 115 and a circuit board 116, and the circuit board 116 and a power supply assembly 130 are arranged on the bottom plate 115. A detection circuit 111 is located on a side of the circuit board 116 facing the bottom plate 115, and a connecting assembly 120 is connected to a side of the circuit board 116 away from the bottom plate 115.

[0162] The base 110 includes a bottom plate 115 and a circuit board 116, and the bottom plate 115 is a support structure of the detection tool 100, which provides a mounting basis for other components. The circuit board 116 is a printed circuit board 116 mounted on the bottom plate 115, and the surface of the circuit board 116 is provided with lines and electronic components. The detection circuit 111 is specifically arranged on the surface of the side of the circuit board 116 facing the bottom plate 115. The power supply assembly 130 is fixedly mounted on the bottom plate 115 and avoids the circuit board 116. The connecting assembly 120 is mounted on the surface of the side of the circuit board 116 away from the bottom plate 115, and is electrically connected to the detection circuit 111 on the circuit board 116.

[0163] In the structural arrangement proposed in this embodiment, the circuit board 116 is kept a certain distance from the bottom plate 115 by the support, forming a layered layout, which provides convenient conditions for the miniaturization design and lightweight design of the detection tool 100. Moreover, the detection circuit 111 is protected in the space between the circuit board 116 and the bottom plate 115, reducing the probability of damage and contamination of the detection circuit 111. The connecting assembly 120 is located on the outer surface of the circuit board 116, providing convenient conditions for the disassembly and assembly operation of the current sensor 200 by the operator.

[0164] The application also provides a detection system 1000, which refers to Figure 17 , Figure 17 The structural schematic diagram of the detection system 1000 provided by the embodiment of the application is shown in the figure, and the detection system 1000 comprises the detection tool 100 provided by any of the above embodiments; a first external power supply 300 connected with the power supply assembly 130; a first sensor 310 connected in series between the first external power supply 300 and the power supply assembly 130; and a first test device 320 connected with the sensor, the first test device 320 being configured to detect the current of the current sensor 200 through the first sensor 310.

[0165] The first sensor 310 comprises a standard resistor 311 and a base 312.

[0166] Since the detection system 1000 comprises the detection tool 100 in any of the above embodiments, it can also solve the technical problems of low test efficiency and inability to complete the full detection of the current sensor 200 within a limited production time in the related art, and achieve the technical effects of improving the test efficiency of the current sensor 200 and reducing the test cost of the current sensor 200.

[0167] On this basis, the detection system 1000 further comprises the first external power supply 300, the first sensor 310, and the first test device 320. The first external power supply 300 is a program-controlled power supply, and its output end is electrically connected with the power supply assembly 130 of the detection tool 100. The first sensor 310 is a high-precision current sensor 200, which is connected in series in the main circuit between the first external power supply 300 and the power supply assembly 130. The first test device 320 is a program-controlled multimeter, and its input end is connected with the signal output end of the first sensor 310.

[0168] During the test, the first external power supply 300 provides test current to multiple current sensors 200 on the testing fixture 100 through the power supply component 130. This test current flows through the first sensor 310 connected in series in the loop. The first sensor 310 monitors the current value in the loop in real time and converts it into a corresponding electrical signal, which is then transmitted to the first testing device 320. The first testing device 320 collects and analyzes the received electrical signal to obtain the actual test current value and feeds this data back to the host computer system.

[0169] Therefore, the proposed solution in this embodiment achieves monitoring and calibration of the test current. Specifically, the first sensor 310 serves as a standard measuring device, independently measuring the current output by the first external power supply 300. The measurement result is converted into a digital signal by the first testing device 320. The host computer system compares the set output value of the first external power supply 300 with the actual measured value of the first testing device 320 to achieve real-time monitoring and calibration of the test current accuracy.

[0170] Compared to test schemes that rely solely on the accuracy of the power supply itself, this embodiment establishes closed-loop monitoring and calibration of the test current to ensure that the current value applied to each current sensor 200 under test meets the test specification requirements. This eliminates adverse effects such as power supply output error, contact resistance variation, and environmental factors, thereby improving the accuracy and reliability of test data and meeting the test accuracy requirements of the current sensor 200.

[0171] In an alternative embodiment, the test system further includes a shielding box 340 for protecting the current sensor 200 and shielding it from external interference.

[0172] In some embodiments of this application, reference is made to Figure 18 , Figure 18 The present invention provides a schematic diagram of the structure of a detection system 1000. The detection system 1000 further includes: a second external power supply 400 connected to the detection circuit 111 for supplying power to the detection circuit 111; a second sensor 410 connected to the detection circuit 111; and a second testing device 420 connected to the second sensor 410. The second testing device 420 is used to detect at least one of the power consumption, impedance, and output value of the current sensor 200 through the second sensor 410.

[0173] The detection system 1000 further comprises a second external power supply 400, a second sensor 410 and a second test device 420. The second external power supply 400 is a stabilized power supply, and an output end thereof is connected with the detection circuit 111 of the detection tool 100, for providing working voltage for the detection circuit 111. The second sensor 410 is electrically connected with the current sensor 200 to be detected through the test interface 114 and the detection circuit 111, and the second sensor 410 comprises a first multi-channel acquisition card 411, a second multi-channel acquisition card 412 and a test board 414, and an output end thereof is connected with the second test device 420.

[0174] During the test process, the second external power supply 400 provides stabilized working voltage for the detection circuit 111 through the power supply interface 113, the detection circuit 111 applies test signals to each current sensor 200 to be detected through the connecting assembly 120, and the second sensor 410 collects response signals of each current sensor 200 in real time, including power consumption parameters, impedance characteristics and output values and other data. These data are transmitted to the second test device 420 through the test interface 114, the second test device 420 analyzes and processes the received multi-channel signals, and uploads the results to the upper computer system.

[0175] Specifically, the embodiment enables the detection system 1000 to have multi-parameter test capability, the multi-channel acquisition card in the second test device 420 is responsible for quickly switching the test channels of different products, and realizes the turn-by-turn detection of multiple current sensors 200; the program-controlled multimeter is responsible for accurately measuring the electrical parameters of each sensor, and the first relay board 415 and the second relay board 416 are used to switch different test modes during the test process, such as cutting off the stabilized power supply connection for power consumption test.

[0176] Therefore, the embodiment realizes the synchronous detection of multiple performance parameters of the current sensor 200, and further realizes the technical effects of widening the functional coverage range and reducing the test cost.

[0177] In an alternative embodiment, the second test device 420 comprises a power consumption test module 413, the power consumption test module 413 tests the power consumption of the current sensor 200, and the upper computer controls the multi-channel power consumption tester to simultaneously test the power consumption of multiple current sensors 200.

[0178] In an alternative embodiment, the converter 417 converts the signals of the first multi-channel acquisition card 411 and the second multi-channel acquisition card 412, and communicates with the upper computer.

[0179] The relay box 418 is used to fix and protect the first multi-channel acquisition card 411, the second multi-channel acquisition card 412 and the relay board.

[0180] In some embodiments of the present application, refer to Figure 19 ,Figure 19 The structural diagram of the detection system 1000 provided by the embodiment of the present application, the detection system 1000 further comprises a vibration table 500, the detection tooling 100 is arranged on the vibration table 500, and the vibration table 500 is used to drive the detection tooling 100 to vibrate.

[0181] The detection system 1000 further comprises the vibration table 500, the vibration table 500 is test equipment capable of generating controllable mechanical vibration, and the detection tooling 100 is fixed on the table surface of the vibration table 500. The vibration table 500 can drive the detection tooling 100 and the plurality of current sensors 200 installed on the detection tooling 100 to vibrate together according to a preset vibration frequency, amplitude and duration.

[0182] During the test process, the vibration table 500 vibrates according to the automobile driving condition or the charging condition, simulating the vibration environment in the actual driving process or the charging process.

[0183] Therefore, the detection system 1000 has the on-line vibration test capability, can detect the working stability and reliability of the current sensor 200 in the vibration environment, and further has the technical effects of widening the test coverage range and improving the yield rate of the current sensor 200.

[0184] In some embodiments of the present application, with reference to Figure 20 , Figure 20 The structural diagram of the detection system 1000 provided by the embodiment of the present application, the detection system 1000 further comprises a test box 600, the test box 600 comprises a cavity 610, the detection tooling 100 is arranged in the cavity 610, and the test box 600 is used to adjust the environmental parameters of the cavity 610, the environmental parameters comprising at least one of temperature, humidity and air pressure.

[0185] The detection system 1000 further comprises the test box 600, the test box 600 is internally provided with a sealed cavity 610, the detection tooling 100 is installed in the cavity 610, the test box 600 has the environmental parameter adjustment capability, and at least one of the temperature, humidity and air pressure in the cavity 610 can be accurately controlled and adjusted.

[0186] During the test process, the test box 600 adjusts the environmental parameters in the cavity 610 according to the preset environmental conditions, simulates the extreme temperature, humidity or altitude conditions that may be encountered in the automobile driving process. Therefore, the detection system 1000 has the environmental adaptability test capability, specifically, the performance evaluation of the current sensor 200 under the influence of environmental factors is realized by placing the detection tooling 100 in a controllable environment, and further the technical effects of widening the test coverage range and improving the yield rate of the current sensor 200 are realized.

[0187] The above merely preferred embodiments of the present application and are not intended to limit the patent scope of the present application, any equivalent structure or equivalent process transformation using the content of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A detection tool for detecting a current sensor, the current sensor comprising a pin, characterized in that, The utility model relates to a detection tool for current sensor, including: a base, the base includes detection circuit; a plurality of connecting components are arranged in the base, and a plurality of connecting components are electrically connected with the detection circuit, the connecting component corresponds with the current sensor, the connecting component includes positioning part and electricity connection part, the positioning part is used for positioning the current sensor, and the electricity connection part is used for electrically connecting the pin; a power supply component is arranged in the base, and the power supply component is used for supplying power to a plurality of current sensors installed on a plurality of connecting components.

2. The inspection tool of claim 1, wherein The base includes a plurality of mounting positions, the mounting position corresponds with the connecting component, and the connecting component and the mounting position are detachably connected.

3. The inspection tool of claim 2, wherein, The base includes a plurality of busses, the bus is electrically connected with the detection circuit, and the bus forms the mounting position. The connecting component further includes a pin, the pin is electrically connected with the electricity connection part, and the pin is matched with the bus.

4. The inspection tool of claim 2, wherein the first and second light sources are disposed on opposite sides of the inspection tool. The base further includes a first connecting hole, the first connecting hole forms the mounting position, the connecting component further includes a second connecting hole, and the first connecting hole and the second connecting hole are opposite. The detection tool further includes a connecting piece, and the connecting piece is arranged in the first connecting hole and the second connecting hole.

5. The inspection tool of claim 1, wherein, The connecting component includes a conductive sheet, the conductive sheet forms the electricity connection part, and the conductive sheet is in abutment with the pin when the current sensor is installed on the positioning part.

6. The inspection tool of claim 5, wherein, Two conductive sheets are a group, each group of conductive sheets is connected with a pin, two conductive sheets in the same group are symmetrically arranged, and a slot is formed between the two conductive sheets, the slot is used for accommodating the end of the pin, and the end of the pin is in abutment with the slot.

7. The inspection tool of claim 6, wherein the first and second light sources are disposed on opposite sides of the inspection tool. In the depth direction of the slot, the width of the slot gradually decreases.

8. The inspection tool of any one of claims 1 to 7, wherein, The current sensor further includes a groove, the pin is located in the groove, the connecting component further includes a limiting block, the limiting block forms the positioning part, the limiting block includes a matching protrusion and a supporting surface, the electricity connection part is arranged on the matching protrusion, the matching protrusion is matched with the groove, and the supporting surface is used for supporting the current sensor.

9. The inspection tool of any one of claims 1 to 7, wherein, The current sensor further includes a power supply jack, the power supply component includes two conductive parts and a power supply column, the conductive part is used for connecting a first external power supply, the power supply column connects the two conductive parts, a plurality of connecting components are distributed between the two conductive parts along the axial direction of the power supply column, and the power supply column is used for penetrating a plurality of power supply jacks on a plurality of current sensors.

10. The inspection tool of claim 9, wherein the first and second light sources are configured to emit light having a wavelength of 400 nm to 700 nm. The conductive part includes a conductive block and a fixing piece, the conductive block is arranged in the base, the conductive block includes a receiving groove and a fixing hole, the fixing hole is communicated with the receiving groove, the power supply column is arranged in the receiving groove, the fixing piece is arranged in the fixing hole, and the end of the fixing piece is in abutment with the peripheral surface of the power supply column.

11. The inspection tool of claim 10, wherein the first and second light sources are configured to emit light having a wavelength of 400 nm to 700 nm. The conductive part further includes a wiring terminal, and the wiring terminal is detachably connected with the conductive block.

12. The inspection tool of any one of claims 1 to 7, wherein, The base further includes a power supply interface and a test interface, the power supply interface and the test interface are electrically connected with the detection circuit, the power supply interface is used for connecting a second external power supply, and the test interface is used for outputting test data.

13. The inspection tool of any one of claims 1 to 7, wherein, The base comprises a bottom plate and a circuit board, the power supply assembly and the detection circuit are arranged on the bottom plate, the detection circuit is arranged on one side of the circuit board facing the bottom plate, and the connecting assembly is connected to the other side of the circuit board away from the bottom plate.

14. A detection system characterized by, The detection system comprises: The detection tool according to any one of claims 1 to 13; A first external power source connected to the power supply assembly; A first sensor connected in series between the first external power source and the power supply assembly; A first test device connected to the sensor, the first test device being configured to detect the current of the current sensor through the first sensor.

15. The detection system of claim 14, wherein, Further comprising: A second external power source connected to the detection circuit, the second external power source being configured to supply power to the detection circuit; A second sensor connected to the detection circuit; A second test device connected to the second sensor, the second test device being configured to detect at least one of the power consumption, impedance, and output value of the current sensor through the second sensor.

16. The detection system of claim 14 or 15, wherein, The detection system further comprises a vibration table, the detection tool is arranged on the vibration table, and the vibration table is configured to drive the detection tool to vibrate.

17. The detection system of claim 14 or 15, wherein, The detection system further comprises a test box, the test box comprises a cavity, the detection tool is arranged in the cavity, and the test box is configured to adjust environmental parameters of the cavity, the environmental parameters comprising at least one of temperature, humidity, and air pressure.

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