Winding needle detection tool, winding needle measurement equipment, winding needle measurement system and battery production system

Abstract

The utility model discloses a winding needle detection tool, measurement equipment, a winding needle measurement system and a battery production system, and belongs to the technical field of detection. The winding needle detection tool comprises a support; the two first plug connectors are located on the same side of the support and arranged at intervals in the first direction, each first plug connector comprises a body part and a plug-in part, the body parts are connected with the support, the plug-in parts are connected to the sides, facing each other, of the body parts of the two first plug connectors, and the plug-in parts are used for being matched with slots of a part of needle bodies of the winding needle in a plug-in mode; the direction from the support to the first plug connector is perpendicular to the first direction. The two first plug connectors are in plug connection with the notches in the two ends of the needle body of the winding needle, the connection process of the winding needle in the assembly state can be simulated, and when detection equipment detects the winding needle, detection data can be more accurate and real.

Description

Technical Field

[0001] The present application relates to a field of detection technology, and specifically to a winding needle detection tool, a measuring device, a winding needle measurement system and a battery production system. Background Art

[0002] The winding needle for winding the pole piece needs to be tested for its geometric features by measuring equipment before use. The winding needle cannot perform geometric feature detection on the winding equipment, resulting in distortion of the detection data. If a winding needle with unqualified geometric features is used, the winding effect will be affected. Utility Model Content

[0003] In view of the above problems, the present application provides a winding needle detection tool, a measuring device, a winding needle measurement system and a battery production system, which can improve the problem of distortion of detection data.

[0004] In a first aspect, the present application provides a needle coil detection tool, comprising:

[0005] Support;

[0006] Two first connectors are located on the same side of the support and are spaced apart along a first direction. The first connector includes a main body and a plug-in portion. The main body is connected to the support. The main bodies of the two first connectors are connected to the plug-in portion on one side facing each other. The plug-in portion is used to plug and cooperate with a slot on a part of the needle body of the winding needle. The direction from the support to the first connector is perpendicular to the first direction.

[0007] The two first connectors are plugged into the notches at both ends of the needle body of the winding needle, which can simulate the connection process of the winding needle in the assembled state. When the detection equipment detects the winding needle, the detection data can be more accurate and true.

[0008] In some embodiments, the winding needle detection tooling further includes a second plug-in component, the plug-in portion is provided with a positioning hole, and the second plug-in component is sequentially configured to be plugged and matched with the pin hole and the positioning hole on the outer peripheral surface of the needle body. When the winding needle is assembled on the winding device, the square shaft is plugged into the slot of the winding needle (the two ends of the square shaft extend from the two ends of the winding needle), and the winding needle and the square shaft are fixed by the pins on the surface of the outer shaft of the winding needle. Through the second plug-in component, the connection between the winding needle and the square shaft can be further simulated, so that the measurement data of the winding needle is more accurate and true.

[0009] In some embodiments, the positioning hole is located on the side of the plug-in part away from the support. During the assembly process, compared with the method of fixing the needle body in the horizontal direction by the second plug-in part (in this method, the first plug-in part supports the weight of the needle body of the winding needle, and each time the measurement is installed, the position of the needle body and the first plug-in part will have a large deviation, affecting the detection result), after the upper and lower surfaces of the first plug-in part (the two surfaces of the first plug-in part along the length direction of the main body) are plugged into the slot of the needle body, they can support the weight of the needle body and can position the needle body along the length direction of the main body to improve the consistency and accuracy of the detection results.

[0010] In some embodiments, the second connector includes a first shaft segment and a second shaft segment, one end of the first shaft segment is connected to one end of the second shaft segment, the diameter of the first shaft segment is larger than the diameter of the second shaft segment, the first shaft segment and the second shaft segment are coaxially arranged, at least part of the first shaft segment is configured to be plugged and matched with the pin hole of the needle body, and at least part of the second shaft segment is configured to be plugged and matched with the positioning hole. Since the winding needle and the square shaft are positioned by pins, and the pin hole of the square shaft is different in size from the pin hole of the winding needle, therefore, the second connector is configured as the first shaft segment and the second shaft segment, and the diameter of the first shaft segment is larger than the diameter of the second shaft segment, so that the connection between the pin hole of the winding needle and the pin hole of the square shaft can be more realistically simulated, so that the measured data is true and reliable.

[0011] In some embodiments, two positioning grooves are provided on the surface of the support facing the first connector, the two positioning grooves are spaced apart along the first direction, and part of the main body is plugged into and matched with the positioning grooves.

[0012] The provision of the positioning groove can pre-position the first connector to facilitate installation and fixation of the first connector.

[0013] In some embodiments, the surface of the plug-in portion facing the support and the surface away from the support respectively form positioning planes, and the positioning planes are used to cooperate with the slot wall of the slot. In this way, the plug-in portion and the slot can be matched in all surfaces, so that the plug-in portion can more accurately simulate the process of assembling the square shaft and the winding needle, thereby making the measurement result of the winding needle more accurate.

[0014] In some embodiments, along the direction from the support to the first plug-in component, the distance between the surface of the support facing the plug-in portion and the surface of the first plug-in component facing away from the support is L, and 200mm≤L≤500mm.

[0015] Therefore, when the winding needle is installed in the winding needle detection fixture, L is greater than or equal to 200mm, so that there can be a certain reserved space between the winding needle and the support, so that the probe of the measuring equipment can move to the bottom of the winding needle and measure the bottom features of the winding needle (the reference position of the winding needle when it is installed in the winding needle detection fixture). L≤500mm can meet the stroke requirements of the probe of the measuring equipment, so that the probe can measure the size of the winding needle.

[0016] In a second aspect, the present application provides a measuring device, including a detection body and the winding needle detection tooling of the first aspect, the winding needle detection tooling is arranged on the detection body, the detection body includes a probe, and the probe is used to detect the geometric characteristics of the winding needle.

[0017] Therefore, the assembly of the needle body of the needle coil is simulated by the needle coil detection fixture, and the geometric features of the needle body are measured by the probe of the detection body, so that the detection result is more accurate.

[0018] In the third aspect, the present application provides a winding needle measurement system, comprising a winding needle and the measuring device of the second aspect, the winding needle comprising two needle bodies, the two needle bodies being able to buckle together to form a cylindrical structure, the joint surfaces of the two needle bodies being respectively provided with slots, the slots penetrating through both ends of the needle body along the axial direction of the needle body.

[0019] Since the winding needle measuring system includes all the technical features of the measuring device of the second aspect mentioned above, the effects are the same as those mentioned above and will not be described in detail here.

[0020] In some embodiments, the size of the slot along the second direction is W1, the size of the plug-in portion along the second direction is W2, the second direction is perpendicular to the direction from the support to the first plug-in component and the first direction, and W2 is smaller than W1. Thus, when the probe of the detection body moves to the vicinity of the plug-in portion, interference with the plug-in portion can be reduced.

[0021] In some embodiments, the main body includes a first part, the first part is connected to the plug-in part, and the size of the first part along the second direction is W3, which is smaller than W1. When the probe and the matching surface of the needle body of the winding needle (the contact surface of the two needle bodies) are arranged opposite to each other, after detecting the geometric features of the slot on the matching surface, the probe moves to the two ends of the needle body to detect the geometric features of the contour of the matching surface. W3 is smaller than W1, which can reduce the probability of interference between the probe and the first part.

[0022] In some embodiments, the radius of the outer peripheral surface of the needle body is R, and the size of the first part along the direction from the support to the first connector is H, and H is greater than or equal to R. Thus, space is reserved for the features at both ends of the needle body of the winding needle to facilitate the probe to measure the geometric features at both ends of the needle body.

[0023] In a fourth aspect, the present application provides a battery production system, comprising the winding needle detection tooling of the first aspect; or, comprising the measuring equipment of the second aspect; or, comprising the winding needle measurement system of the third aspect.

[0024] Since the battery production system includes all the technical features of the winding needle detection tooling of the first aspect, or includes all the technical features of the measuring equipment of the second aspect, or includes all the technical features of the winding needle measurement system of the third aspect, the effects are the same as above and will not be repeated here.

[0025] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0027] Figure 1 This is an axonometric diagram of the connection between a needle winding detection tool and a needle body of a needle winding needle according to an embodiment of the present application;

[0028] Figure 2 This is a front view of a needle winding detection tool connected to a needle winding needle body according to an embodiment of the present application;

[0029] Figure 3 for Figure 2 AA cross-sectional view;

[0030] Figure 4 A side view of a needle winding detection tool connected to a needle winding needle body according to an embodiment of the present application;

[0031] Figure 5 This is an axonometric diagram of the positional relationship between a needle winding detection tool and a measurement subject according to an embodiment of the present application.

[0032] The reference numerals in the specific implementation manner are as follows:

[0033] 100, measuring device; 10, needle winding detection tool; 11, support; 111, positioning groove; 12, first plug-in connector; 121, main body; 1211, first part; 1212, second part; 122, plug-in part; 1221, positioning hole; 13, second plug-in connector; 131, first shaft section; 132, second shaft section; 20, detection body; 21, probe;

[0034] 200, needle body; 210, slot; 220, pin hole;

[0035] X, first direction; Y, second direction. DETAILED DESCRIPTION

[0036] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0038] In the description of the embodiments of the present application, the technical terms "first", "second", etc. 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 "multiple" is more than two, unless otherwise clearly and specifically defined.

[0039] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0040] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0041] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0042] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0043] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0044] Before using the winding needle for winding the pole piece, the size of the winding needle needs to be detected by measuring equipment. The winding needle is detected in a free state, which leads to distortion of the detection data. If a winding needle with unqualified detection geometric features is used, it will affect the winding effect. Specifically, the winding needle of the pole piece includes two parts of the needle body, and the two parts of the needle body are buckled to form a cylindrical structure. Each part of the needle body is provided with a slot on the side facing each other, and the slot passes through both ends of the needle body in the axial direction. Before using the winding needle, the geometric features of each part of the needle body need to be measured by detection equipment to determine whether the combination features of the needle body meet the requirements for manufacturing the pole piece. At present, the geometric features of the needle body are measured by detection equipment in a free state, and there is a problem of distorted detection data.

[0045] In view of this, the present application provides a winding needle detection tool. Since the winding needle will generate assembly stress after assembly, its geometric characteristics before and after assembly are different. Therefore, by connecting two first connectors with the slots at both ends of the needle body of the winding needle, the connection process of the winding needle in the assembled state can be simulated. When the detection equipment detects the winding needle, the detection data can be more accurate and true.

[0046] The needle winding detection tooling of the present application can be used for, but not limited to, needle winding for pole pieces.

[0047] For the convenience of explanation, please refer to the following examples. Figure 1-Figure 4 , a needle rolling detection tool 10 of some embodiments of the present application is taken as an example for explanation.

[0048] The needle winding detection tool 10 includes a support 11 and two first connectors 12. The two first connectors 12 are located on the same side of the support 11 and are spaced apart along the first direction X. The first connector 12 includes a body portion 121 and a plug-in portion 122. The body portion 121 is connected to the support 11. The body portions 121 of the two first connectors 12 are connected to the plug-in portion 122 on one side facing each other. The plug-in portion 122 is used to be plugged and matched with the slot 210 of a part of the needle body 200 of the needle winding needle. The direction from the support 11 to the first connector 12 is perpendicular to the first direction X.

[0049] Optionally, the main body 121 may be a rod-shaped structure or a plate-shaped structure.

[0050] Optionally, the connection between the plug-in portion 122 and the main body portion 121 includes, but is not limited to, welding, clamping, screw connection or integral molding.

[0051] Optionally, the size and shape and position tolerance of the needle body 200 can be measured by some measuring tools, such as a special plug gauge, a vernier caliper or a micrometer, etc., and can also be measured by three-coordinate measurement.

[0052] The two first connectors 12 are plugged into the notches at both ends of the needle body 200 of the winding needle, which can simulate the connection process of the winding needle in the assembled state. When the detection equipment detects the winding needle, the detection data can be more accurate and true.

[0053] In some embodiments, please refer to Figure 1 and Figure 3 The needle winding detection tooling 10 also includes a second connector 13, and the connector portion 122 is provided with a positioning hole 1221. The second connector 13 is sequentially configured to be plugged and matched with the pin hole 220 and the positioning hole 1221 on the outer peripheral surface of the needle body 200.

[0054] The diameter of the positioning hole 1221 may be smaller than or equal to the diameter of the pin hole 220 of the outer circumferential surface of the needle body 200 .

[0055] The second connector 13 is configured to be plugged and matched with the pin hole 220 and the positioning hole 1221 on the outer peripheral surface of the needle body 200. After the slot 210 of the needle body 200 is plugged with the plug-in portion 122, the second connector 13 is sequentially penetrated with the pin hole 220 and the positioning hole 1221, and is respectively positioned and matched with the pin hole 220 and the positioning hole 1221. The positioning fit can be one of a transition fit, an interference fit or a clearance fit. The interference fit is better, the positioning is accurate, and it is easier to simulate the process of installing the square shaft and the winding needle through the pin, so that the detection data is more accurate.

[0056] When the winding needle is assembled on the winding equipment, it is connected with the slot 210 of the winding needle through the square shaft (the two ends of the square shaft extend from the two ends of the winding needle), and the winding needle and the square shaft are fixed by the pins on the surface of the outer shaft of the winding needle. Through the second connector 13, the connection between the winding needle and the square shaft can be further simulated, so that the measurement data of the winding needle is more accurate and true.

[0057] In some embodiments, please refer to Figure 3 , the positioning hole 1221 is located on the side of the plug-in part 122 away from the support 11. During the assembly process, compared with the method of fixing the needle body 200 in the horizontal direction by the second plug-in part 13 (using this method, the first plug-in part 12 supports the weight of the needle body 200 of the needle winding needle, and each time the measurement is installed, the position of the needle body 200 and the first plug-in part 12 will produce a large deviation, affecting the detection result), after the upper and lower surfaces of the first plug-in part 12 (the two surfaces of the first plug-in part 12 along the length direction of the main body 121) are plugged into the slot 210 of the needle body 200, they can support the weight of the needle body 200 and can position the needle body 200 along the length direction of the main body 121, so as to improve the consistency and accuracy of the detection results.

[0058] In some embodiments, please refer to Figure 3 The second connector 13 includes a first shaft section 131 and a second shaft section 132. One end of the first shaft section 131 is connected to one end of the second shaft section 132. The diameter of the first shaft section 131 is larger than the diameter of the second shaft section 132. The first shaft section 131 and the second shaft section 132 are coaxially arranged. At least part of the first shaft section 131 is configured to be plugged and matched with the pin hole 220 on the outer peripheral surface of the needle body 200, and at least part of the second shaft section 132 is configured to be plugged and matched with the positioning hole 1221. Since the winding needle and the square shaft are positioned by a pin, and the pin hole 220 of the square shaft is different in size from the pin hole 220 of the winding needle, the second connector 13 is configured as the first shaft section 131 and the second shaft section 132, and the diameter of the first shaft section 131 is larger than the diameter of the second shaft section 132, which can more realistically simulate the connection between the pin hole 220 of the winding needle and the pin hole 220 of the square shaft, so that the measured data is true and reliable.

[0059] In some embodiments, please refer to Figure 1 Two positioning grooves 111 are provided on the surface of the support 11 facing the first plug-in component 12 . The two positioning grooves 111 are arranged at intervals along the first direction X, and part of the body portion 121 is plugged into and matched with the positioning grooves 111 .

[0060] Optionally, the positioning groove 111 includes two groove walls spaced apart along the first direction X, and the two groove walls respectively abut against the first connector 12 to limit the movement of the first connector 12 along the first direction X. The positioning groove 111 may penetrate at least one end of the support 11 along the second direction Y, or may not penetrate the end of the support 11 along the second direction Y. In other examples, the shape of the groove wall of the positioning groove 111 may be, but not limited to, circular, elliptical, or polygonal, and the contour shape of the cross section of the first connector 12 inserted into the positioning groove 111 may be the same as the contour shape of the groove wall of the positioning groove 111, and the direction from the support 11 to the first connector 12 is perpendicular to the cross section.

[0061] The provision of the positioning groove 111 can pre-position the first plug connector 12 to facilitate installation and fixation of the first plug connector 12 .

[0062] In some embodiments, please refer to Figure 3 The surface of the plug-in portion 122 facing the support 11 and the surface away from the support 11 respectively form positioning planes, which are used to cooperate with the groove wall of the slot 210. In this way, the plug-in portion 122 can be fully matched with the slot 210, so that the plug-in portion 122 can more accurately simulate the process of assembling the square shaft and the winding needle, thereby making the measurement result of the winding needle more accurate.

[0063] In some embodiments, please refer to Figure 2 , along the direction from the support 11 to the first plug connector 12, the distance between the surface of the support 11 facing the plug-in portion 122 and the surface of the first plug connector 12 facing away from the support 11 is L, 200mm≤L≤500mm.

[0064] Therefore, when the winding needle is installed in the winding needle detection fixture 10, L is greater than or equal to 200mm, so that there can be a certain reserved space between the winding needle and the support 11, so that the probe 21 of the measuring device 100 can move to the bottom of the winding needle and measure the bottom characteristics of the winding needle (the reference position when the winding needle is installed in the winding needle detection fixture 10). L≤500mm can meet the stroke requirement of the probe of the measuring equipment, so that the probe can measure the size of the winding needle.

[0065] For the convenience of explanation, please refer to the following examples. Figure 5 , a measuring device 100 according to some embodiments of the present application is taken as an example for description.

[0066] The measuring device 100 includes a detection body 20 and the winding needle detection tool 10 of the above embodiment. The winding needle detection tool 10 is arranged on the detection body 20. The detection body 20 includes a probe 21. The probe 21 is used to detect the geometric characteristics of the winding needle.

[0067] Optionally, the detection body 20 may be a three-dimensional coordinate measuring machine, and the needle winding detection tool 10 may be disposed on a detection platform of the detection body 20 .

[0068] The geometric features may be, but are not limited to, the geometric dimensions or form and position tolerances of the winding needle.

[0069] Therefore, the needle body 200 of the needle winding is simulated by the needle winding detection tool 10, and the geometric features of the needle body 200 are measured by the probe 21, so that the detection result is more accurate.

[0070] For the convenience of explanation, please refer to the following examples. Figure 1-Figure 5 , a winding needle measurement system of some embodiments of the present application is taken as an example for explanation.

[0071] The winding needle measurement system includes a winding needle and the measuring device 100 of the above embodiment. The winding needle includes two needle bodies 200. The two needle bodies 200 can be buckled together to form a cylindrical structure. The joint surfaces of the two needle bodies 200 are respectively provided with slots 210, and the slots 210 pass through both ends of the needle body 200 along the axial direction of the needle body 200.

[0072] Since the winding needle measuring system includes all the technical features of the measuring device 100 of the above embodiment, the effects are the same as those described above and will not be described in detail here.

[0073] In some embodiments, please refer to Figure 3 , the size of the slot 210 along the second direction Y is W1, the size of the plug-in portion 122 along the second direction Y is W2, the second direction Y is perpendicular to the direction from the support 11 to the first plug-in component 12 and the first direction X, and W2 is smaller than W1. Thus, when the measuring device 100 moves to the vicinity of the plug-in portion 122, interference with the plug-in portion 122 can be reduced.

[0074] In some embodiments, please refer to Figure 3 The main body 121 includes a first portion 1211 , the first portion 1211 is connected to the plug-in portion 122 , and a dimension of the first portion 1211 along the second direction Y is W3 , which is smaller than W1 .

[0075] Exemplarily, the body portion 121 may only include the first portion 1211, one end of which is connected to the support 11. The other end of the first portion 1211 is provided with the plug-in portion 122.

[0076] Exemplarily, the body 121 further includes a second portion 1212, one end of the first portion 1211 is connected to one end of the second portion 1212, the other end of the first portion 1211 away from the second portion 1212 is provided with a plug-in portion 122, and the other end of the second portion 1212 is connected to the support 11. The first portion 1211 and the second portion 1212 are both rod-shaped structures, and the length direction of the first portion 1211 is the same as the length direction of the second portion 1212.

[0077] When the mating surface of the probe 21 and the needle body 200 of the winding needle (the contact surface of the two needle bodies 200) are arranged opposite to each other, after detecting the geometric features of the slot 210 on the mating surface, the probe 21 moves to the two ends of the needle body 200 to detect the geometric features of the contour of the mating surface. W3 is smaller than W1, which can reduce the probability of interference between the probe 21 and the first part 1211.

[0078] In some embodiments, please refer to Figure 4 The radius of the outer peripheral surface of the needle body 200 is R, and the size of the first portion 1211 along the direction from the support 11 to the first connector 12 is H, which is greater than or equal to R. Thus, space is reserved for the features of the two ends of the needle body 200 of the needle winding needle, so as to facilitate the probe 21 to measure the geometric features of the two ends of the needle body 200.

[0079] For the convenience of description, the following embodiments are described by taking a battery production system according to some embodiments of the present application as an example.

[0080] The battery production system includes the winding needle detection tool 10 of the above embodiment; or, the battery production system includes the measuring device 100 of the above embodiment; or, the battery production system includes the winding needle measurement system of the above embodiment.

[0081] Since the battery production system includes all the technical features of the above-mentioned winding needle detection tooling 10, or includes all the technical features of the above-mentioned measuring equipment 100, or includes all the technical features of the above-mentioned winding needle measurement system, the effects are the same as above and will not be repeated here.

[0082] In an optional embodiment of the needle winding detection work, please refer to Figure 1-Figure 4The needle winding detection tooling 10 includes a support 11, a second connector 13 and two first connectors 12. The two first connectors 12 are located on the same side of the support 11 and are spaced apart along the first direction X. The first connector 12 includes a main body 121 and a plug-in portion 122. The main body 121 is connected to the support 11. The main bodies 121 of the two first connectors 12 are connected to the plug-in portion 122 on one side facing each other. The plug-in portion 122 is used to be plugged in and matched with the slot 210 of a part of the needle body 200 of the needle winding. The direction from the support 11 to the first connector 12 is perpendicular to the first direction X. The plug-in portion 122 is provided with a positioning hole 1221. The second connector 13 is configured to be plugged in and matched with the pin hole 220 and the positioning hole 1221 on the outer peripheral surface of the needle body 200. The positioning hole 1221 is located on the side of the plug-in portion 122 facing away from the support 11. The second plug connector 13 includes a first shaft section 131 and a second shaft section 132. One end of the first shaft section 131 is connected to one end of the second shaft section 132. The diameter of the first shaft section 131 is larger than the diameter of the second shaft section 132. The first shaft section 131 and the second shaft section 132 are coaxially arranged. At least part of the first shaft section 131 is configured to be plugged and matched with the pin hole 220 on the outer peripheral surface of the needle body 200, and at least part of the second shaft section 132 is configured to be plugged and matched with the positioning hole 1221. The surface of the support 11 facing the first plug connector 12 is provided with two positioning grooves 111. The two positioning grooves 111 are arranged at intervals along the first direction X, and part of the body 121 is plugged and matched with the positioning grooves 111. The surfaces of the plug-in portion 122 facing and away from the support 11 respectively form positioning planes, and the positioning planes are used to match with the groove wall of the slot 210. Along the direction from the support 11 to the first connector 12, the distance between the surface of the support 11 facing the plug-in portion 122 and the surface of the first connector 12 facing away from the support 11 is L, 200mm≤L≤500mm. The dimension of the slot 210 along the second direction Y is W1, and the dimension of the plug-in portion 122 along the second direction Y is W2. The second direction Y is perpendicular to the direction from the support 11 to the first connector 12 and the first direction X, respectively, and W2 is smaller than W1. The main body 121 includes a first part 1211, the first part 1211 is connected to the plug-in portion 122, and the dimension of the first part 1211 along the second direction Y is W3, which is smaller than W1. The radius of the outer peripheral surface of the needle body 200 is R, and the dimension of the first part 1211 in the direction from the support 11 to the first connector 12 is H, and H is greater than or equal to R.

[0083] The two first connectors 12 are plugged into the grooves at both ends of the needle body 200 of the winding needle, and the first connector 12 is positioned and matched with the positioning hole 1221 and the pin hole 220 of the needle body 200, which can simulate the connection process of the winding needle in the assembled state. When the detection equipment detects the winding needle, the detection data can be more accurate and true, and W2 is less than W1, W3 is less than W1, and H is greater than or equal to R, which can reduce the probability of interference between the probe 21 and the first part 1211.

[0084] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A needle coil detection tool, characterized in that: include: Support; Two first connectors are located on the same side of the support and are spaced apart along a first direction, the first connectors comprising a main body and a plug-in portion, the main body being connected to the support, the plug-in portion being connected to one side of the main bodies of the two first connectors facing each other, the plug-in portion being used for plugging and cooperating with a slot of a part of the needle body of the winding needle, and the direction from the support to the first connector being perpendicular to the first direction.

2. The needle coil detection tooling according to claim 1, characterized in that: The needle winding detection tool also includes a second connector, the connector portion is provided with a positioning hole, and the second connector is configured to be plugged and matched with the pin hole on the outer peripheral surface of the needle body and the positioning hole in sequence.

3. The needle coil detection tooling according to claim 2, characterized in that: The positioning hole is located at a side of the plug-in portion away from the support.

4. The needle coil detection tooling according to claim 2, characterized in that: The second connector includes a first shaft segment and a second shaft segment, one end of the first shaft segment is connected to one end of the second shaft segment, the diameter of the first shaft segment is larger than the diameter of the second shaft segment, the first shaft segment and the second shaft segment are coaxially arranged, at least a portion of the first shaft segment is configured to be plug-fitted with the pin hole of the needle body, and at least a portion of the second shaft segment is configured to be plug-fitted with the positioning hole.

5. The needle coil detection tool according to any one of claims 1 to 4, characterized in that: The support is provided with two positioning grooves on a surface facing the first connector. The two positioning grooves are spaced apart along the first direction, and a part of the main body is plugged into and matched with the positioning grooves.

6. The needle coil detection tool according to any one of claims 1 to 4, characterized in that: The surface of the plug-in portion facing the support and the surface away from the support respectively form positioning planes, and the positioning planes are used to cooperate with the groove wall of the slot.

7. The needle coil detection tool according to any one of claims 1 to 4, characterized in that: Along the direction from the support to the first plug connector, the distance between the surface of the support facing the plug-in portion and the surface of the first plug connector facing away from the support is L, and 200mm≤L≤500mm.

8. A measuring device, characterized in that: It comprises a detection body and a winding needle detection tool as described in any one of claims 1 to 7, wherein the winding needle detection tool is arranged on the detection body, and the detection body comprises a probe, and the probe is used to detect the geometric characteristics of the winding needle.

9. A needle winding measurement system, characterized in that: It comprises a winding needle and a measuring device as claimed in claim 8, wherein the winding needle comprises two needle bodies, the two needle bodies can be buckled together to form a cylindrical structure, the joint surfaces of the two needle bodies are respectively provided with the slots, and the slots pass through the two ends of the needle body along the axial direction of the needle body.

10. The winding needle measuring system according to claim 9, characterized in that: The size of the slot along the second direction is W1, the size of the plug-in portion along the second direction is W2, the second direction is perpendicular to the direction from the support to the first plug-in component and the first direction, and W2 is smaller than W1.

11. The winding needle measuring system according to claim 10, characterized in that: The main body includes a first part, the first part is connected to the plug-in part, and a size of the first part along the second direction is W3, which is smaller than W1.

12. The winding needle measuring system according to claim 11, characterized in that: The radius of the outer peripheral surface of the needle body is R, and the size of the first part along the direction from the support to the first connector is H, which is greater than or equal to R.

13. A battery production system, characterized in that: It comprises the winding needle detection tool as described in any one of claims 1 to 7; or, it comprises the measuring equipment as described in claim 8; or, it comprises the winding needle measurement system as described in any one of claims 9 to 12.

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