A testing fixture for lithium battery production

Abstract

This utility model discloses a testing fixture for lithium battery production, relating to the field of lithium battery production technology. It includes a base plate, a fixed plate, a push plate, and a driving device. The upper surface of the base plate has a clamping area. The fixed plate and the push plate are respectively located at both ends of the clamping area. The driving device is driven and connected to the push plate. It also includes a first guide rod, a second guide rod, a first guide wheel, and a second guide wheel. The first and second guide rods are respectively located on both sides of the fixed plate. The extension directions of the first and second guide rods are parallel to the driving direction of the driving device. The rods of the first and second guide rods extend through both sides of the push plate. The first and second guide wheels are located on both sides of the push plate. The first guide rod slides onto the first guide wheel and limits the first guide wheel's movement towards the push plate. The second guide wheel is similar to the second guide rod. This utility model, by setting pulleys on both sides of the guide rods corresponding to the guide wheels on both sides, limits the direction of travel of the push plate, improving the smoothness of the push plate's movement.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery production technology, and in particular to a testing fixture for lithium battery production. Background Technology

[0002] Testing fixtures used in lithium battery production are devices used to securely hold lithium batteries and establish an electrical connection with testing instruments to test key indicators such as voltage, current, internal resistance, and capacity of lithium batteries.

[0003] Chinese utility model patent application No. 201720460117.7 discloses a high-efficiency battery station fixture. This patent uses a push rod to drive each movable clamping component to move back and forth. However, since the movement of the guide rod is constrained by the through hole on the fixed clamping component, if the pushing direction of the push mechanism does not correspond to the extension direction of the guide rod due to reasons such as installation accuracy, interference will occur. This will cause frictional interference when the guide rod moves, and the movable clamping components will not move smoothly, making it impossible to guarantee fast and accurate clamping. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a testing fixture for lithium battery production. By setting a first guide rod and a second guide rod to correspond to the first guide wheel and the second guide wheel respectively, the movement direction of the push plate is limited, thereby improving the smoothness of the push plate movement while meeting the clamping accuracy requirements.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: This utility model provides a testing fixture for lithium battery production, comprising a base plate, a fixed plate, a push plate, and a driving device. The upper surface of the base plate has a clamping area. The fixed plate is located at one end of the clamping area. The push plate is located at the other end of the clamping area. The driving end of the driving device is connected to the push plate, and the driving device drives the push plate to move towards the fixed plate. It also includes a first guide rod, a second guide rod, a first guide wheel, and a second guide wheel. One end of the first guide rod and one end of the second guide rod are respectively located on the lateral sides of the fixed plate facing the push plate. The extension directions of the other ends of the first and second guide rods are parallel to the driving direction of the driving device. The rod body of the first guide rod extends through one side of the push plate. The rod body of the second guide rod extends through the other side of the push plate. The first guide wheel is located on the side of the push plate near the first guide rod. The second guide wheel is located on the side of the push plate near the second guide rod. The first guide wheel is slidably engaged with the first guide rod, and the first guide rod limits the first guide wheel's movement towards the push plate. The second guide wheel is slidably engaged with the second guide rod, and the second guide rod limits the second guide wheel's movement towards the push plate.

[0006] The testing fixture for lithium battery production provided by this utility model preferably has a first guide wheel disposed between a first guide rod and a push plate; the shaft of the first guide wheel is vertically oriented; bearings are provided at both ends of the first guide wheel along its axial direction; the two ends of the first guide wheel along its axial direction are rotatably connected to the push plate through the bearings; the first guide wheel and the second guide wheel are arranged in a mirror image structure.

[0007] The testing fixture for lithium battery production provided by this utility model preferably has a first mounting groove and a second mounting groove respectively opened on the lateral sides of the push plate; a first guide wheel is installed in the first mounting groove; a second guide wheel is installed in the second mounting groove; a first guide rod passes through the first mounting groove and slides with the first guide wheel; a second guide rod passes through the second mounting groove and slides with the second guide wheel.

[0008] The testing fixture for lithium battery production provided by this utility model preferably has an annular through groove on the circumferential surface of both the first guide wheel and the second guide wheel; the annular through groove is arranged in the same direction as the rotation direction of the first guide wheel and the second guide wheel; the annular through groove corresponds to the rod body of the first guide rod or the second guide rod.

[0009] The testing fixture for lithium battery production provided by this utility model preferably has an annular through groove that is a semi-circular groove; the radius of the annular through groove is the same as the radius of the first guide rod or the second guide rod.

[0010] The above technical solution has the following advantages or beneficial effects: This utility model provides a testing fixture for lithium battery production, relating to the field of lithium battery production technology, including a base plate, a fixed plate, a push plate, and a driving device; the upper surface of the base plate is provided with a clamping area; the fixed plate is located at one end of the clamping area; the push plate is located at one end of the clamping area; the driving end of the driving device is connected to the push plate, and the driving device drives the push plate to move towards the fixed plate; it also includes a first guide rod, a second guide rod, a first guide wheel, and a second guide wheel; one end of the first guide rod and one end of the second guide rod are respectively located on the fixed plate facing towards the fixed plate. The first guide rod extends laterally to both sides of the push plate; the other ends of the first and second guide rods extend in directions parallel to the driving direction of the driving device; the body of the first guide rod extends across one side of the push plate; the body of the second guide rod extends across the other side of the push plate; the first guide wheel is located on the side of the push plate near the first guide rod; the second guide wheel is located on the side of the push plate near the second guide rod; the first guide wheel is slidably fitted to the first guide rod, and the first guide rod limits the first guide wheel's movement towards the push plate; the second guide wheel is slidably fitted to the second guide rod, and the second guide rod limits the second guide wheel's movement towards the push plate. This utility model provides a testing fixture for lithium battery production. By setting the first and second guide rods to correspond to the first and second guide wheels respectively, it limits the travel direction of the push plate, improving the smoothness of the push plate's movement while meeting clamping accuracy requirements. Attached Figure Description

[0011] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0012] Figure 1 This is an overall structural diagram of a testing fixture for lithium battery production provided in Embodiment 1 of this utility model; Figure 2 This is a push plate structure diagram of a testing fixture for lithium battery production provided in Embodiment 1 of this utility model; Figure 3 This is a structural diagram of the annular through groove and the first guide rod of a testing fixture for lithium battery production, provided in Embodiment 1 of this utility model. Figure 1-3 Includes: 1. Base plate; 11. Fixing plate; 2. Push plate; 21. First mounting slot; 22. Second mounting slot; 3. Drive device; 31. First guide rod; 32. Second guide rod; 33. First guide wheel; 34. Second guide wheel; 4. Annular through groove. Detailed Implementation

[0013] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0014] Example 1: like Figure 1-3 As shown: This utility model provides a testing fixture for lithium battery production, comprising a base plate 1, a fixing plate 11, a push plate 2, and a driving device 3; the upper surface of the base plate 1 is provided with a clamping area; the fixing plate 11 is disposed at one end of the clamping area; the push plate 2 is disposed at the other end of the clamping area; the driving end of the driving device 3 is connected to the push plate 2, and the driving device 3 drives the push plate 2 to move toward the fixing plate 11; it also includes a first guide rod 31, a second guide rod 32, a first guide wheel 33, and a second guide wheel 34; one end of the first guide rod 31 and one end of the second guide rod 32 are respectively disposed on the lateral sides of the side of the fixing plate 11 facing the push plate 2; the other end of the first guide rod 31... The extension directions of one end of the first guide rod and the other end of the second guide rod 32 are both parallel to the driving direction of the driving device 3; the rod body of the first guide rod 31 extends past one side of the push plate 2; the rod body of the second guide rod 32 extends past the other side of the push plate 2; the first guide wheel 33 is disposed on the side of the push plate 2 near the first guide rod 31; the second guide wheel 34 is disposed on the side of the push plate 2 near the second guide rod 32; the first guide wheel 33 is slidably engaged with the first guide rod 31, and the first guide rod 31 limits the first guide wheel 33 in the direction toward the push plate 2; the second guide wheel 34 is slidably engaged with the second guide rod 32, and the second guide rod 32 limits the second guide wheel 34 in the direction toward the push plate 2.

[0015] When using the testing fixture for lithium battery production provided by this utility model to clamp the battery, the battery is first placed in the clamping area, at which point the battery is located between the fixed plate 11 and the push plate 2. Then, the drive device 3 is activated to push the push plate 2 towards the battery and clamp the battery between the fixed plate 11 and the push plate 2. During the process of the drive device 3 driving the push plate 2, the first guide rod 31 and the second guide rod 32 are located on the left and right sides of the push plate 2, respectively. Through the cooperation of the first guide wheel 33 and the second guide wheel 34 on the left and right sides of the push plate 2, the push plate 2 is limited by the first guide rod 31 and the second guide rod 32 during the movement, so that the push plate 2 can move along the set route. At the same time, the frictional resistance between the push plate 2 and the first guide rod 31 and the second guide rod 32 is greatly reduced due to the cooperation of the pulleys, improving the smoothness of the push plate 2's movement. In addition, the improved smoothness can further improve the clamping accuracy.

[0016] The present invention provides a testing fixture for lithium battery production. The first guide rod 31 and the second guide rod 32 respectively pulley and cooperate with the first guide wheel 33 and the second guide wheel 34 on both sides of the push plate 2. The push plate 2 is limited while improving smoothness and effectively improving clamping accuracy.

[0017] As a specific implementation of the first guide wheel 33, in a preferred embodiment, the first guide wheel 33 is disposed between the first guide rod 31 and the push plate 2; the shaft of the first guide wheel 33 is vertically arranged; bearings are provided at both ends of the first guide wheel 33 in the axial direction; the two ends of the first guide wheel 33 in the axial direction are rotatably connected to the push plate 2 through the bearings. The first guide wheel 33 is vertically positioned on the side of the push plate 2 near the first guide rod 31 and is engaged with the first guide rod 31 by a pulley. The second guide wheel 34 is mirror-image positioned with respect to the first guide wheel 33. Therefore, viewed from the direction of movement of the push plate 2, the first guide wheel 33 and the second guide wheel 34 are respectively installed on the left and right sides of the push plate 2, and the rotation axes of the first guide wheel 33 and the second guide wheel 34 are vertically aligned. The first guide rod 31 corresponds to the wheel surface of the first guide wheel 33, and the second guide rod 32 corresponds to the wheel surface of the second guide wheel 34.

[0018] In a preferred embodiment, the push plate 2 has a first mounting groove 21 and a second mounting groove 22 on its two lateral sides respectively; the first guide wheel 33 is installed in the first mounting groove 21; the second guide wheel 34 is installed in the second mounting groove 22; the first guide rod 31 passes through the first mounting groove 21 and slides with the first guide wheel 33; the second guide rod 32 passes through the second mounting groove 22 and slides with the second guide wheel 34.

[0019] To prevent offset or vibration during the movement of the push plate 2 and further improve its movement accuracy, in a preferred embodiment, both the first guide wheel 33 and the second guide wheel 34 have annular grooves 4 on their peripheral surfaces. The annular grooves 4 are aligned with the rotational direction of the first guide wheel 33 and the second guide wheel 34. The annular grooves 4 correspond to the shaft of the first guide rod 31 or the second guide rod 32. In the aforementioned scheme, if the wheel surface of the first guide wheel 33 or the second guide wheel 34 is cylindrical, the contact area between its wheel surface and the first guide rod 31 or the second guide rod 32 is small, and the guide rod can only limit the guide wheel in a single direction. If an annular groove 4 is provided on the wheel surface, the guide rod can not only limit the guide wheel in a direction perpendicular to the wheel surface but also add limiting in other directions. The specific limiting direction is determined by the cross-sectional structure of the annular groove 4.

[0020] The present invention provides a testing fixture for lithium battery production. By setting an annular through groove 4 on the wheel surface, which corresponds to the rod body of the guide rod, the guide wheel can be limited in multiple directions, effectively improving the stability of the push plate 2 movement.

[0021] In a preferred embodiment, the annular groove 4 is a semi-circular groove; the radius of the annular groove 4 is the same as the radius of the first guide rod 31 or the second guide rod 32. The annular groove 4 with a semi-circular cross-section allows the body of the first guide rod 31 or the second guide rod 32 to completely fit into the annular groove 4, maximizing the contact area and providing maximum stability for the movement of the push plate 2.

[0022] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the application filed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not claimed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the appended claims.

[0023] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A testing fixture for lithium battery production, comprising a base plate, a fixing plate, a push plate, and a driving device; a clamping area is provided on the upper surface of the base plate; the fixing plate is disposed at one end of the clamping area; the push plate is disposed at the other end of the clamping area; the driving end of the driving device is connected to the push plate, and the driving device drives the push plate to move toward the fixing plate; characterized in that, It also includes a first guide rod, a second guide rod, a first guide wheel, and a second guide wheel; one end of the first guide rod and one end of the second guide rod are respectively disposed on the lateral sides of the side of the fixed plate facing the push plate; The extension directions of the other ends of the first guide rod and the second guide rod are both parallel to the driving direction of the driving device; the rod body of the first guide rod extends past one side of the push plate; the rod body of the second guide rod extends past the other side of the push plate; the first guide wheel is disposed on the side of the push plate near the first guide rod; the second guide wheel is disposed on the side of the push plate near the second guide rod; the first guide wheel is slidably engaged with the first guide rod, and the first guide rod limits the first guide wheel in the direction toward the push plate; the second guide wheel is slidably engaged with the second guide rod, and the second guide rod limits the second guide wheel in the direction toward the push plate.

2. The testing fixture for lithium battery production according to claim 1, characterized in that, The first guide wheel is disposed between the first guide rod and the push plate; the rotation axis of the first guide wheel is vertically arranged; bearings are provided at both ends of the first guide wheel in the axial direction; the two ends of the first guide wheel in the axial direction are rotatably connected to the push plate through the bearings; The first guide wheel and the second guide wheel are configured as mirror images.

3. The testing fixture for lithium battery production according to claim 1, characterized in that, The push plate has a first mounting groove and a second mounting groove on its two lateral sides respectively; the first guide wheel is installed in the first mounting groove; the second guide wheel is installed in the second mounting groove; the first guide rod passes through the first mounting groove and slides with the first guide wheel; the second guide rod passes through the second mounting groove and slides with the second guide wheel.

4. The testing fixture for lithium battery production according to claim 1, characterized in that, Both the first guide wheel and the second guide wheel have annular grooves on their peripheral surfaces; the annular grooves are arranged in the same direction as the rotation of the first guide wheel and the second guide wheel; the annular grooves correspond to the rod body of the first guide rod or the second guide rod.

5. The testing fixture for lithium battery production according to claim 4, characterized in that, The annular groove is a semi-circular groove; the radius of the annular groove is the same as the radius of the first guide rod or the second guide rod.

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