Positioning fixture and battery size testing machine

Abstract

The application relates to the technical field of battery size measurement, in particular to a positioning clamp and a battery size testing machine. The positioning clamp comprises a clamping assembly, the clamping assembly comprises a clamping part, a driving weight, a transmission frame and a transmission rope, one end of the transmission rope is connected with the driving weight, the driving weight is hung on the transmission frame, the transmission rope is arranged on the transmission frame, and the transmission rope is connected with the clamping part, so that the clamping part clamps a clamped object through the gravity of the driving weight. According to the positioning clamp and the battery size testing machine, the clamping force for clamping the clamped object can be kept highly consistent every time, and the positioning accuracy and reliability of the clamped object are improved.

Description

Technical Field

[0001] This application relates to the field of battery size measurement technology, and in particular to a positioning fixture and a battery size testing machine. Background Technology

[0002] A battery size testing machine is an automated device specifically designed for inspecting the external dimensions of batteries. It typically consists of a mechanical frame, positioning fixtures, measuring sensors, and a data processing system. Its working principle involves fixing the battery in a designated position using the positioning fixtures, and then using measuring devices such as laser rangefinders and contact measuring probes to accurately measure the battery's length, width, thickness, and other dimensional parameters. The collected data is then transmitted to the data processing system for analysis and processing, ultimately yielding the battery's size measurement results.

[0003] In battery manufacturing and related applications, accurate measurement of battery dimensions plays a crucial role in ensuring product quality, guaranteeing battery compatibility in equipment, and improving overall performance. Strict control over battery dimensions not only ensures installation compatibility in various electronic products, energy storage devices, and other end-use applications, avoiding assembly difficulties and poor contact caused by dimensional deviations, but also effectively improves the consistency and stability of battery production, reduces product quality risks caused by dimensional non-compliance, and helps companies improve production efficiency and market competitiveness.

[0004] However, current battery size testing machines typically use a side spring structure to clamp and position the battery for measurement. But because the clamping force of the side spring is difficult to maintain consistently during each test, the clamping force applied to the battery varies. When the clamping force is too small, the battery may slightly shift or wobble during testing, failing to maintain a stable position for measurement, leading to deviations in the dimensional data obtained by the measuring equipment. Conversely, when the clamping force is too large, it may cause deformation of the battery surface, especially for batteries made of softer materials or with special structures. This deformation further affects the accuracy of the measurement results, making the measured dimensions not the true original dimensions of the battery. Utility Model Content

[0005] The purpose of this application is to provide a positioning fixture and a battery size testing machine to address, to some extent, the technical problems in the prior art where the clamping force of the side springs is inconsistent during each test, resulting in varying clamping forces acting on the battery each time. This leads to deviations in the dimensional data obtained by the measuring equipment, and if the clamping force is too large, it can cause deformation of the battery surface due to compression.

[0006] According to a first aspect of this application, a positioning clamp is provided, including a clamping assembly. The clamping assembly includes a clamping part, a driving weight, a transmission frame, and a transmission rope. One end of the transmission rope is connected to the driving weight to suspend the driving weight on the transmission frame, and the other end of the transmission rope is wound around the transmission frame and connected to the clamping part to drive the clamping part to clamp the object to be clamped by the gravity of the driving weight.

[0007] Preferably, the transmission frame includes a first support and a second support arranged opposite to each other along a predetermined direction. The first support includes a first rotating part, and the second support includes a second rotating part and a third rotating part. The axes of the first rotating part, the second rotating part, and the third rotating part are all perpendicular to the predetermined direction.

[0008] The first rotating part is disposed above the driving weight in the direction of gravity, the second rotating part is disposed above the side where the clamping part is located and is disposed opposite to the first rotating part in a predetermined direction, and the third rotating part and the second rotating part are disposed opposite to each other in the direction of gravity.

[0009] At least a portion of the clamping part is disposed on the side of the third rotating part opposite to the object being clamped, and the transmission rope sequentially passes around the first rotating part, the second rotating part and the third rotating part and is connected to at least a portion of the clamping part.

[0010] Preferably, it further includes a limiting edge, which is disposed opposite to the clamping portion along the predetermined direction, so that the object to be clamped is clamped between the clamping portion and the limiting edge.

[0011] Preferably, the clamping assembly further includes a first slide rail extending along the predetermined direction, the first slide rail being fixedly disposed, the clamping part including a slider slidably connected to the first slide rail, and the transmission rope being connected to the clamping part via the slider.

[0012] Preferably, the clamping part includes an abutting part and a connecting part fixedly connected to each other, the abutting part being used to abut against the side of the object to be clamped, and the connecting part connecting the slider and the abutting part.

[0013] Preferably, the clamping assembly further includes:

[0014] A weight tray is provided, and the transmission rope is connected to the driving weight via the weight tray. The driving weight is detachably connected to the weight tray.

[0015] The second slide rail is fixed to the first bracket and extends along the direction of gravity. The weight tray is slidably connected to the second slide rail.

[0016] Preferably, it further includes a placement platform, and the clamping assembly is disposed on the placement platform;

[0017] The second bracket is detachably connected to the placement platform to adjust the clamping position of the clamping part.

[0018] Preferably, the placement platform is provided with two clamping assemblies, one of which has a predetermined direction parallel to a first direction, and the other has a predetermined direction parallel to a second direction. The first direction and the second direction intersect.

[0019] Preferably, the placement platform is provided with a clearance groove that runs through the placement platform along the direction of gravity, and the first bracket is disposed in the clearance groove.

[0020] According to a second aspect of this application, a battery size testing machine is provided, including the positioning fixture described in any of the above technical solutions, and thus possesses all the beneficial technical effects of the positioning fixture, which will not be repeated here.

[0021] Compared with the prior art, the beneficial effects of this application are as follows:

[0022] The positioning fixture provided in this application uses the gravity of a driving weight to drive the clamping part to hold the object to be clamped. Utilizing the constant gravity of the weight avoids the unstable clamping force problem of traditional springs, ensuring that the clamping force remains highly consistent each time. This significantly improves the accuracy of object positioning and effectively avoids dimensional measurement deviations caused by clamping force fluctuations, guaranteeing the accuracy and reliability of measurement results. Furthermore, the design of the driving weight facilitates adjustment of the clamping force, expanding the applicability of the positioning fixture and improving the versatility and compatibility of the equipment. The structural design of the transmission rope wound around the transmission frame effectively transmits and converts the gravity of the driving weight, forming a stable and uniform clamping force. This better ensures the stability of the object to be clamped during the measurement process, preventing displacement or deformation caused by uneven force, further improving the accuracy and reliability of the measurement.

[0023] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This is an isometric structural diagram of the clamping assembly provided in the embodiments of this application;

[0026] Figure 2 This is an isometric structural diagram of the positioning fixture provided in the embodiments of this application;

[0027] Figure 3 This is an exploded structural diagram of the positioning fixture provided in the embodiments of this application.

[0028] Figure label:

[0029] 11-Drive weight; 110-Weight tray; 111-Weight positioning pin; 121-Abutting part; 122-Connecting part; 123-Sliding groove; 124-Slider; 13-Transmission rope; 21-First bracket; 211-First rotating part; 212-Second slide rail; 22-Second bracket; 221-Second rotating part; 222-Third rotating part; 3-Object to be clamped; 4-Placement platform; 41-Limiting edge; 42-Allowing groove; 43-First slide rail; 44-Placement groove; 45-Positioning hole; 46-Handle.

[0030] F1 - First direction; F2 - Second direction; Y - Predetermined direction; G - Gravity direction. Detailed Implementation

[0031] The technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this application, but not all embodiments.

[0032] The components of the embodiments of this application described and shown in the accompanying drawings can be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of this application provided in the drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application.

[0033] Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0034] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0036] The following reference Figures 1 to 3 This application describes a positioning fixture and a battery size testing machine according to some embodiments.

[0037] See Figures 1 to 3 As shown, an embodiment of the first aspect of this application provides a positioning clamp, which includes a clamping assembly. The clamping assembly includes a clamping part, a driving weight 11, a transmission frame, and a transmission rope 13. One end of the transmission rope 13 is connected to the driving weight 11 to suspend the driving weight 11 on the transmission frame. The transmission rope 13 is wound around the transmission frame and connected to the clamping part so that the clamping part is driven by the gravity of the driving weight 11 to clamp the object to be clamped 3 (e.g., a battery).

[0038] The positioning fixture provided by the above-mentioned technical features uses the gravity of the driving weight 11 to drive the clamping part to clamp the object 3. Utilizing the constant gravity of the weight avoids the unstable clamping force problem of traditional springs, ensuring that the clamping force of the object 3 remains highly consistent each time. This greatly improves the accuracy of positioning the object 3, effectively avoiding dimensional measurement deviations caused by clamping force fluctuations, and guaranteeing the accuracy and reliability of the measurement results. Furthermore, the design of the driving weight 11 facilitates adjustment of the clamping force, expanding the applicability of the positioning fixture and improving the versatility and compatibility of the equipment. The structural design of the transmission rope 13 wound around the transmission frame effectively transmits and converts the gravity of the driving weight 11, forming a stable and uniform clamping force. This better ensures the stability of the object 3 during the measurement process, preventing displacement or deformation caused by uneven force, further improving the accuracy and reliability of the measurement.

[0039] Preferably, such as Figure 1As shown, the aforementioned transmission frame may include a first support 21 and a second self-propelled device arranged opposite each other along a predetermined direction Y. The first support 21 may include a first rotating part 211, and the second support 22 may include a second rotating part 221 and a third rotating part 222. The axes of the first rotating part 211, the second rotating part 221, and the third rotating part 222 are all perpendicular to the predetermined direction Y. The first rotating part 211 is disposed above the driving weight 11 in the gravitational direction G for suspending the driving weight 11. The second rotating part 221 is disposed above the side where the clamping part is located and is arranged opposite to the first rotating part 211 along the predetermined direction Y to facilitate the transfer of the gravity of the driving weight 11 to the side where the clamping part is located. The third rotating part 222 and the second rotating part 221 are arranged opposite each other along the direction of gravity G. At least a portion of the clamping part is located on the side of the third rotating part 222 that is away from the object being clamped. The transmission rope 13 passes through the first rotating part 211, the second rotating part 221 and the third rotating part 222 in sequence and is connected to at least a portion of the clamping part. In this way, the gravity of the driving weight 11 is converted into a clamping force of the clamping part in the predetermined direction Y away from the direction where the first frame is located through the transmission rope 13. This ensures the constancy of the clamping force (i.e., clamping force = tension of transmission rope 13 = gravity of driving weight 11).

[0040] like Figure 1 As shown in the figure, Y can be an example of the predetermined direction Y mentioned above.

[0041] Preferably, such as Figure 1 As shown, the first support 21 includes a support plate and a mounting frame. The support plate extends along the gravity direction G, and the mounting frame is fixed to the top of the support plate in the gravity direction G. The first rotating part 211 can be fixed to the mounting frame. Figure 1 As shown in the figure, the first rotating part 211 is an example of a shaft structure that extends along the predetermined direction Y. However, it is not limited to this. As long as the smoothness of the tension transmission of the transmission rope 13 can be achieved and the direction of tension transmission of the transmission rope 13 can be changed, the first rotating part 211 can also be other structures, such as fixed pulleys, rollers and other rotating structures.

[0042] Preferably, such as Figure 1 As shown, the second support 22 may include two columns arranged opposite each other along the extension direction of the axis of the second rotating part 221. These columns extend along the direction of gravity G. Both ends of the second rotating part 221 and the third rotating part 222 are respectively disposed on these two columns to fix the second rotating part 221 and the third rotating part 222. Similarly, the structure of the second rotating part 221 and the third rotating part 222 is similar to the structure of the first rotating part 211, and will not be described again here.

[0043] Preferably, the distance between the first support 21 and the second support 22 in the predetermined direction Y is adjustable to accommodate objects 3 of different sizes to be clamped. Optionally, the column can be detachably connected to the mounting platform 4 described below, so as to adjust the distance between the first support 21 and the second support 22 in the predetermined direction Y.

[0044] Preferably, such as Figure 1 and Figure 3 As shown, the clamping assembly may further include a first slide rail 43 extending along a predetermined direction Y. The first slide rail 43 is fixedly disposed. The clamping part includes a slider 124 slidably connected to the first slide rail 43. The transmission rope 13 is connected to the clamping part via the slider 124. In this way, on the one hand, the smoothness of the clamping part moving along the predetermined direction Y is ensured, and on the other hand, the clamping force of the clamping part is reduced by frictional loss, thus ensuring the accuracy of the clamping force.

[0045] Preferably, such as Figures 1 to 3 As shown, the clamping part may include an abutting part 121 and a connecting part 122 fixedly connected to each other. The abutting part 121 is used to abut against the side of the object to be clamped 3, and the connecting part 122 connects the slider 124 and the abutting part 121.

[0046] Preferably, such as Figures 1 to 3 As shown, the clamping part can be T-shaped, that is, the connecting part 122 can extend along the predetermined direction Y, and the abutting part 121 can extend along the axis of the second rotating part 221. In this way, on the one hand, it is convenient for the connecting part 122 to extend between the two columns and connect with the slider 124; on the other hand, it is convenient for the abutting part 121 to adapt to the shape of most square objects to be clamped 3.

[0047] Preferably, such as Figures 1 to 3 As shown, the connecting portion 122 may be provided with a sliding groove 123 extending along the predetermined direction Y. The sliding groove 123 may pass through the connecting portion 122 along the axial direction of the second rotating portion 221, so that the third rotating portion 222 may pass through the connecting portion 122 along its axial direction. The sliding groove 123 may form a threading opening on the side of the connecting portion 122 facing the second rotating portion 221, so that the transmission rope 13 may be wound around the third rotating portion 222 through the threading opening.

[0048] Preferably, such as Figures 1 to 3As shown, the clamping assembly may further include a weight tray 110, through which the transmission rope 13 can be connected to the driving weight 11. In other words, the transmission rope 13 is connected to the weight tray 110, and the driving weight 11 is disposed on the weight tray 110. Thus, the clamping force of the clamping part can be adjusted by the number of driving weights 11 disposed on the weight tray 110.

[0049] Preferably, such as Figures 1 to 3 As shown, the weight tray 110 and the driving weight 11 are detachably connected, so that the clamping force of the clamping part can be adjusted by replacing the driving weight 11 of different specifications.

[0050] Preferably, such as Figure 1 As shown, the weight tray 110 may be provided with a weight positioning pin 111, and the driving weight 11 may be inserted into the weight positioning pin 111 to improve the setting stability of the driving weight 11.

[0051] Preferably, such as Figure 1 and Figure 2 As shown, the clamping assembly may further include a second slide rail 212, which may be fixedly mounted on the support plate. The second slide rail 212 extends along the gravity direction G, and the weight tray 110 is slidably connected to the second slide rail 212 to improve the stability of the weight tray 110 and the accuracy of its movement along the gravity direction G.

[0052] Preferably, such as Figure 2 and Figure 3 As shown, the positioning fixture may further include a fixed limiting edge 41, which is disposed opposite to the clamping part in a predetermined direction Y, so that the object to be clamped 3 is clamped between the clamping part and the limiting edge 41, thereby realizing the clamping action of the object to be clamped 3.

[0053] Preferably, the positioning fixture may include a mounting platform 4, and the clamping components may be disposed on the mounting platform 4 to enable the overall movement of the edge positioning fixture.

[0054] Preferably, such as Figure 3 As shown, the aforementioned placement platform 4 may be provided with a placement groove 44 that is recessed downward along the direction of gravity G, and the groove wall of the placement groove 44 may be formed as the aforementioned limiting edge 41. Optionally, the aforementioned placement groove 44 may be a square groove to accommodate most square objects to be clamped 3.

[0055] In an embodiment, such as Figure 2 and Figure 3As shown, the aforementioned placement platform 4 can be equipped with two clamping components. The predetermined direction Y of one of the clamping components is parallel to the first direction F1, and the predetermined direction Y of the other clamping component is parallel to the second direction F2. The first direction F1 and the second direction F2 intersect, allowing the positioning fixture to clamp the object 3 in both directions simultaneously, thereby improving the testing efficiency of the battery size testing machine.

[0056] like Figure 2 and Figure 3 As shown in the figure, F1 can be an example of the first direction F1 mentioned above, and F2 can be an example of the second direction F2 mentioned above. Preferably, the first direction F1 is perpendicular to the second direction F2 to accommodate the shape of most square objects to be clamped 3. Preferably, the plane defined by the first direction F1 and the second direction F2 can be perpendicular to the gravity direction G mentioned above. In other words, the bottom of the placement groove 44 of the placement platform 4 can be a horizontal plane to improve the placement stability of the object to be clamped 3.

[0057] Preferably, such as Figure 2 As shown, the second bracket 22 and clamping part of the two clamping components are fixed in the mounting groove 44 so that the clamping parts of the two clamping components can abut against the object to be clamped 3.

[0058] For ease of description, the one of the two clamping components whose predetermined direction Y is parallel to the first direction F1 is defined as the first clamping member, and the other of the two clamping components (i.e., the one whose predetermined direction Y is parallel to the second direction F2) is defined as the second clamping member. The abutting portion 121 of the first clamping member extends along the second direction F2, and the abutting portion 121 of the second clamping member extends along the first direction F1.

[0059] Preferably, such as Figure 2 and Figure 3 As shown, the abutting portion 121 of the first clamping member is square, and the abutting portion 121 of the second clamping member is sheet-like. The end of the abutting portion 121 of the first clamping member near the second clamping member is provided with an avoidance notch extending in the second direction F2, so that the abutting portion 121 of the second clamping member can extend into the avoidance notch, thereby avoiding interference between the abutting portion 121 of the first clamping member and the abutting portion 121 of the second clamping member.

[0060] Preferably, such as Figure 2 and Figure 3 As shown, the aforementioned placement platform 4 is provided with a clearance groove 42 that runs through the placement platform 4 along the gravity direction G. The aforementioned first bracket 21 is provided in the clearance groove 42 to provide clearance for the lifting and lowering of the driving weight 11 and the weight tray 110 in the gravity direction G, ensuring that the driving weight 11 has sufficient hoisting space.

[0061] Optionally, such as Figure 3 As shown, the aforementioned placement platform 4 may also be equipped with a handle 46 to facilitate the handling and transfer of the positioning fixture.

[0062] Optionally, such as Figure 3 As shown, the aforementioned placement platform 4 may also be provided with a positioning hole 45, which can be inserted and positioned with a positioning pin at a predetermined position through the positioning hole 45, thereby improving the positioning accuracy of the positioning fixture relative to other structures of the battery size testing machine described below.

[0063] The second aspect of this application also provides a battery size testing machine, which includes the positioning fixture described in any of the above embodiments, and thus has all the beneficial technical effects of the positioning fixture, which will not be repeated here.

[0064] Optionally, not shown in the figure, the battery size testing machine may also include a measuring sensor and a data processing system, both of which are existing technologies in the field and will not be described in detail here.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A positioning fixture, characterized by, The device includes a clamping assembly, which comprises a clamping part, a driving weight, a transmission frame, and a transmission rope. One end of the transmission rope is connected to the driving weight to suspend the driving weight on the transmission frame, and the other end of the transmission rope is wound around the transmission frame and connected to the clamping part so that the clamping part can be driven by the gravity of the driving weight to clamp the object to be clamped.

2. The positioning fixture of claim 1, wherein The transmission frame includes a first support and a second support arranged opposite to each other along a predetermined direction. The first support includes a first rotating part, and the second support includes a second rotating part and a third rotating part. The axes of the first rotating part, the second rotating part and the third rotating part are all perpendicular to the predetermined direction. The first rotating part is disposed above the driving weight in the direction of gravity, the second rotating part is disposed above the side where the clamping part is located and is disposed opposite to the first rotating part in a predetermined direction, and the third rotating part and the second rotating part are disposed opposite to each other in the direction of gravity. At least a portion of the clamping part is disposed on the side of the third rotating part opposite to the object being clamped, and the transmission rope sequentially passes around the first rotating part, the second rotating part and the third rotating part and is connected to at least a portion of the clamping part.

3. The positioning fixture according to claim 2, characterized in that, It also includes a limiting edge, which is disposed opposite to the clamping part along the predetermined direction, so that the object to be clamped is clamped between the clamping part and the limiting edge.

4. The positioning fixture according to claim 2, characterized in that, The clamping assembly further includes a first slide rail extending along the predetermined direction, the first slide rail being fixedly disposed, the clamping part including a slider slidably connected to the first slide rail, and the transmission rope being connected to the clamping part via the slider.

5. The positioning fixture according to claim 4, characterized in that, The clamping part includes an abutting part and a connecting part that are fixedly connected to each other. The abutting part is used to abut against the side of the object to be clamped, and the connecting part connects the slider and the abutting part.

6. The positioning fixture according to claim 2, characterized in that, The clamping assembly further includes: A weight tray, wherein the transmission rope is connected to the driving weight via the weight tray, and the driving weight is detachably connected to the weight tray; The second slide rail is fixed to the first bracket and extends along the direction of gravity. The weight tray is slidably connected to the second slide rail.

7. The positioning fixture according to any one of claims 2 to 6, characterized in that, It also includes a placement platform, on which the clamping assembly is disposed; The second bracket is detachably connected to the placement platform to adjust the clamping position of the clamping part.

8. The positioning fixture according to claim 7, characterized in that, The placement platform is provided with two clamping components. The predetermined direction of one of the two clamping components is parallel to the first direction, and the predetermined direction of the other of the two clamping components is parallel to the second direction. The first direction and the second direction intersect.

9. The positioning fixture according to claim 7, characterized in that, The placement platform is provided with a clearance groove that runs through the placement platform along the direction of gravity, and the first support is disposed in the clearance groove.

10. A battery size testing machine, characterized in that, The positioning fixture includes any one of claims 1 to 9.

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