Cylindrical lithium ion battery roll core diameter measuring device

Abstract

This utility model discloses a device for measuring the diameter of a cylindrical lithium-ion battery core, including a measuring plate. The measuring plate is an elastic element with a circular ring structure. Scale lines are provided on the circumferential surface of the measuring plate. One end of the measuring plate is connected to a guide block, and the other end of the measuring plate is slidably connected to the guide block. An adjusting rod is connected to the sliding end of the measuring plate. This utility model measures the diameter of the core using a circular measuring plate. The measuring plate is fitted onto the circumference of the core, and the position of the sliding end of the measuring plate is adjusted by the adjusting rod to ensure that the measuring plate fits snugly against the circumference of the core, thus achieving diameter measurement. The large contact area between the measuring plate and the core prevents core deformation, thereby ensuring the accuracy of the measurement results.

Description

Technical Field

[0001] This utility model belongs to the field of core diameter measurement technology, specifically relating to a device for measuring the diameter of cylindrical lithium-ion battery cores. Background Technology

[0002] In the manufacturing process of cylindrical lithium-ion batteries, the precise measurement of the core diameter is crucial. After the battery is wound, the dimensional accuracy of the core diameter directly affects whether it can be smoothly installed into the steel casing. If the core diameter is too large, it will not be able to be installed into the steel casing; if the diameter is too small, it may wobble inside the steel casing, affecting battery performance.

[0003] Currently, vernier calipers are commonly used on production lines to measure the diameter of the core. However, vernier calipers have many drawbacks in practical applications. For example, the contact area between the clamping surface of the vernier caliper and the core is relatively small, which can easily deform the surface of the core during measurement, leading to significant measurement errors. Utility Model Content

[0004] The purpose of this invention is to provide a device for measuring the diameter of cylindrical lithium-ion battery cores, thereby solving the problems mentioned in the background section. The cylindrical lithium-ion battery core diameter measuring device provided by this invention effectively reduces measurement errors.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a cylindrical lithium-ion battery core diameter measuring device, comprising a measuring plate, the measuring plate being an elastic element and having a circular ring structure, with scale lines provided on the circumferential surface of the measuring plate, a guide block connected to one end of the measuring plate, the other end of the measuring plate being slidably connected to the guide block, and an adjusting rod connected to the sliding end of the measuring plate.

[0006] Furthermore, the measuring plate is made of stainless steel or copper.

[0007] To facilitate operation of the adjusting rod, a fixed rod corresponding to the adjusting rod is further connected to the guide block.

[0008] To facilitate adjustment of the position of the sliding end of the measuring plate, a lead screw is further connected to the upper end of the fixed rod, and a slip ring is connected to the upper end of the adjusting rod, with the slip ring fitted onto the lead screw. A wing bolt is threaded onto the lead screw.

[0009] To guide the movement of the sliding end of the measuring piece, the guide block is further provided with a guide groove corresponding to the measuring piece.

[0010] To avoid the movement of the adjusting rod, the upper surface of the guide block is further provided with a clearance groove that communicates with the guide groove.

[0011] In order to limit the movement of the adjusting rod and prevent the sliding end of the measuring plate from sliding out of the guide block, a limiting block is further provided at the end of the clearance groove.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model uses a measuring piece with a circular structure to measure the diameter of the core. The measuring piece is fitted onto the circumference of the core, and the position of the sliding end of the measuring piece is adjusted by an adjusting rod to make the measuring piece fit against the circumference of the core to achieve diameter measurement. The large contact area between the measuring piece and the core makes it less likely to deform the core, thus ensuring the accuracy of the measurement results.

[0014] 2. This utility model allows the position of the slip ring to be adjusted by turning the wing bolt, thereby adjusting the position of the sliding end of the measuring piece, so that the measuring piece fits against the circumferential surface of the core, and can lock the sliding end of the measuring piece, which is convenient for accurate reading. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the structure of the circumferential surface of the measuring plate of this utility model.

[0017] Figure 3 This is a schematic diagram of the structure of the guide block of this utility model.

[0018] In the diagram: 1. Measuring plate; 2. Fixing rod; 3. Guide block; 31. Guide groove; 32. Clearance groove; 33. Limiting block; 4. Lead screw; 5. Slip ring; 6. Wing bolt; 7. Adjusting rod; 8. Scale line. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Example 1

[0021] Please see Figures 1-3The present invention provides the following technical solution: a cylindrical lithium-ion battery core diameter measuring device, comprising a measuring plate 1, the height of the measuring plate 1 being approximately half the height of the core, for example, the height of the measuring plate 1 used for measuring the diameter of an 18650 battery core is preferably 30mm, the measuring plate 1 is a stainless steel sheet structure and has a circular ring structure, the circumferential surface of the measuring plate 1 is provided with scale lines 8, one end of the measuring plate 1 is connected to a guide block 3, the guide block 3 has an arc structure, the other end of the measuring plate 1 is slidably connected to the guide block 3, and an adjusting rod 7 is connected to the sliding end of the measuring plate 1.

[0022] By adopting the above technical solution, this utility model measures the diameter of the core by using a measuring piece 1 with a circular structure. The measuring piece 1 is fitted on the circumference of the core, and the position of the sliding end of the measuring piece 1 is adjusted by the adjusting rod 7 so that the measuring piece 1 fits against the circumference of the core to achieve diameter measurement. The large contact area between the measuring piece 1 and the core makes it less likely to deform the core, thereby ensuring the accuracy of the measurement results.

[0023] Specifically, a fixed rod 2 corresponding to the adjusting rod 7 is connected to the guide block 3.

[0024] By adopting the above technical solution, it is convenient to operate the adjusting rod 7.

[0025] Specifically, the guide block 3 has a guide groove 31 inside that corresponds to the measuring piece 1.

[0026] By adopting the above technical solution, the movement of the sliding end of the measuring piece 1 is guided.

[0027] Specifically, the upper surface of the guide block 3 is provided with an avoidance groove 32 that communicates with the guide groove 31.

[0028] The above technical solution is used to avoid the movement of the adjusting rod 7.

[0029] Specifically, a limiting block 33 is provided at the end of the clearance groove 32.

[0030] By adopting the above technical solution, the movement stroke of the adjusting rod 7 is limited to prevent the sliding end of the measuring piece 1 from sliding out of the guide block 3.

[0031] Example 2

[0032] The difference between this embodiment and embodiment 1 is that, specifically, measuring piece 1 is a copper sheet structure.

[0033] Example 3

[0034] The difference between this embodiment and embodiment 1 is that, specifically, the upper end of the fixed rod 2 is connected to the lead screw 4, the upper end of the adjusting rod 7 is connected to the slip ring 5, the slip ring 5 is sleeved on the lead screw 4, and the lead screw 4 is threaded with a wing bolt 6.

[0035] By adopting the above technical solution, the position of the slip ring 5 can be adjusted by turning the butterfly bolt 6, thereby adjusting the position of the sliding end of the measuring piece 1, so that the measuring piece 1 fits against the circumferential surface of the core, and the sliding end of the measuring piece 1 can be locked, which facilitates accurate reading.

[0036] The operation method of this utility model is as follows:

[0037] 1. Turn the butterfly bolt 6 counterclockwise to move the slip ring 5 to the right so that the diameter of the circular measuring piece 1 is slightly larger than the diameter of the core to be measured.

[0038] 2. Place the core to be tested inside the annular measuring plate 1;

[0039] 3. Turn the butterfly bolt 6 clockwise to move the slip ring 5 to the left, thereby driving the sliding end of the measuring piece 1 to move to the left along the guide groove 31, so that the measuring piece 1 is in contact with the circumferential surface of the core to be tested.

[0040] 4. The diameter of the core is the size of the guide block 3 located on the scale line 8 on the side of the sliding end of the measuring piece 1.

[0041] In summary, this invention uses a ring-shaped measuring piece 1 to measure the diameter of the core. The measuring piece 1 is fitted onto the circumference of the core, and the position of the sliding end of the measuring piece 1 is adjusted by the adjusting rod 7 to ensure that the measuring piece 1 fits snugly against the circumference of the core, thus achieving diameter measurement. The large contact area between the measuring piece 1 and the core prevents core deformation, thereby ensuring the accuracy of the measurement results. This invention also allows adjustment of the position of the slip ring 5 by turning the wing bolt 6, thereby adjusting the position of the sliding end of the measuring piece 1 to ensure it fits snugly against the circumferential surface of the core and can lock the sliding end of the measuring piece 1 for accurate readings.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for measuring the diameter of a cylindrical lithium-ion battery core, characterized in that: It includes a measuring plate, which is an elastic element and has a circular structure. The measuring plate has scale lines on its circumferential surface. One end of the measuring plate is connected to a guide block, and the other end of the measuring plate is slidably connected to the guide block. An adjusting rod is connected to the sliding end of the measuring plate.

2. The cylindrical lithium-ion battery core diameter measuring device according to claim 1, characterized in that: The measuring plate is made of stainless steel or copper.

3. The cylindrical lithium-ion battery core diameter measuring device according to claim 1, characterized in that: The guide block is connected to a fixed rod corresponding to the adjusting rod.

4. The cylindrical lithium-ion battery core diameter measuring device according to claim 3, characterized in that: The upper end of the fixed rod is connected to a lead screw, and the upper end of the adjusting rod is connected to a slip ring, which is sleeved on the lead screw.

5. The cylindrical lithium-ion battery core diameter measuring device according to claim 4, characterized in that: The lead screw is threaded with a wing bolt.

6. The cylindrical lithium-ion battery core diameter measuring device according to claim 1, characterized in that: The guide block has a guide groove inside that corresponds to the measuring piece.

7. The cylindrical lithium-ion battery core diameter measuring device according to claim 6, characterized in that: The upper surface of the guide block is provided with an avoidance groove that communicates with the guide groove.

8. The cylindrical lithium-ion battery core diameter measuring device according to claim 7, characterized in that: The end of the clearance groove is provided with a limiting block.

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