Cell thickness measuring device
By designing a cell thickness measurement device including the base, fixed rack, sliding rod, and cashmere califf, the problem of low measurement accuracy and lack of unified standards in the existing technology in the existing technology, and achieve more efficient and accurate measurement.
Patent Information
- Application Number
- CN202421306287.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-07
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-06-07
AI Technical Summary
In the prior art, when measuring battery cell thickness, the measurement accuracy is low and there is a lack of unified measurement standards.
Provide a cell thickness measurement device, including the base, fixed rack, sliding pressure rod and a label caliper. By providing a constant pressure through the sliding pressure rod and the base to ensure the accuracy and repetitiveness of the measurement, the dealer calibration measures the thickness of the battery cells by measuring the front and rear differences of the ruler.
The accuracy and efficiency of the thickness measurement of the battery cells are improved, and the differences in measurement methods of different operators are avoided, and there is no need to add excess electrical elements to be flexible.
Smart Images
Figure CN222418870U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of battery core standard measurement, in particular to a battery core thickness measuring device. Background Art
[0002] During the production process, it is usually necessary to measure the thickness of the battery to ensure that the battery size meets the specifications, and also to check whether there are bad battery components or manufacturing process defects. Therefore, the measurement of battery cell thickness is very critical to the quality and safety of the battery.
[0003] At present, there are mainly the following methods for measuring the thickness of battery cells. The first is manual caliper measurement, which requires manual measurement of the battery cell after taking it and placing it on a plane for manual measurement. However, the detection accuracy of this method cannot be guaranteed. For example, inconsistent measurement personnel, inconsistent measurement techniques, and inconsistent measurement bases will directly affect the measurement standards. The second is a height thickness gauge, which measures the height of the battery cell by moving the Z-axis controller and the pressure plate up and down, and based on the displacement feedback of the height gauge probe, the measurement accuracy of this method is relatively low in actual applications. Utility Model Content
[0004] The utility model provides a battery core thickness measuring device to solve the problems of low measurement accuracy and lack of unified measurement standards when measuring battery core thickness in the prior art.
[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is to provide a battery cell thickness measuring device, which includes: a base, a fixing frame, a sliding pressure rod and a vernier caliper.
[0006] The base is used to place the battery cell; the fixing frame includes a first fixing frame and a second fixing frame, the first fixing frame and the second fixing frame are arranged at intervals along a first direction and are respectively connected to the base; the sliding pressure rod is slidably connected to the first fixing frame and the second fixing frame respectively, and can approach or move away from the base along a second direction, wherein a pull rod is provided on the sliding pressure rod, and the pull rod is used to pull the sliding pressure rod to move along the second direction.
[0007] The vernier caliper comprises a measuring ruler and a main body. The measuring ruler can slide relative to the main body along the second direction. The main body is connected to the first fixing frame, and the measuring ruler is connected to the sliding pressure rod.
[0008] Compared with the prior art, the technical solution provided by the utility model has the following beneficial effects:
[0009] By pulling up the sliding pressure rod with a pull rod and placing the battery cell to be tested on the base, gravity can be relied on to allow the sliding pressure rod and the base to provide constant pressure on the battery cell to be tested, thereby ensuring the accuracy and repeatability of the measurement. Since the measuring ruler of the vernier caliper is connected to the sliding pressure rod, the thickness of the battery cell can be measured by the difference between the front and back values of the measuring ruler.
[0010] Specifically, the amount of extension of the measuring ruler relative to the main body when no battery cell is placed is defined as the initial amount, and the zeroing is confirmed. The amount of extension of the measuring ruler relative to the main body when the battery cell is placed is defined as the current amount. The difference between the current amount and the initial amount is the reading of the vernier caliper, and the reading is the battery cell thickness value.
[0011] Among them, the sliding pressure rod is slidably matched with the first fixed frame and the second fixed frame on both sides. The staff only needs to pull the sliding pressure rod and place the battery cell, which effectively avoids the differences in measurement techniques of different operators and improves the efficiency of battery cell thickness measurement.
[0012] In addition, the above structure makes it unnecessary to add redundant electrical components to the measuring device, has low requirements on the place of use, and is flexible to use.
[0013] In some embodiments, the battery cell thickness measuring device is also provided with a sliding assembly, which includes a guide rail and a connecting piece, and the guide rail and the connecting piece are slidably matched, wherein the guide rail is respectively located inside the first fixed frame and the second fixed frame along the first direction, and the connecting piece is connected to the sliding pressure rod.
[0014] In some embodiments, the connecting member further includes a first connecting member and a second connecting member, the first connecting member is connected to the second connecting member, wherein the first connecting member is located on both sides of the sliding pressure rod along the first direction; and the second connecting member is slidably matched with the guide rail.
[0015] By adopting the above technical solution, the sliding pressure rod can be limited to move in the second direction through the sliding cooperation between the connecting part and the guide rail, and the action of moving the sliding pressure rod by the pull rod can be saved for the staff; and the friction force when the connecting part and the guide rail slide against each other can slow down the falling speed of the sliding pressure rod and avoid impact on the battery cell.
[0016] In some embodiments, the base is further provided with a limiting member, which is protruded from the base along the second direction and is located at the outer edge of the base along the third direction.
[0017] By adopting the above technical solution, a limit piece is arranged at the outer edge of the base to prevent the staff from placing the battery cell beyond the edge of the base, thereby causing uneven pressure of the sliding pressure rod on the battery cell.
[0018] In some embodiments, the first fixing frame is further provided with a fixing piece, and a protrusion is provided on a side of the fixing piece away from the first fixing frame along the third direction, and the protrusion is connected to the body of the vernier caliper. The vernier caliper is fixed by the fixing piece, and a protrusion is provided on the upper end of the fixing piece facing the vernier caliper, so that the central axis of the vernier caliper and the measuring ruler are located in the same vertical plane.
[0019] In some embodiments, the measuring scale of the vernier caliper is flush with the bottom surface of the sliding pressure rod along the second direction.
[0020] In some embodiments, the pull rod is located in the middle of the sliding rod along the first direction, and is at least partially embedded in the sliding rod along the second direction, so that the staff can operate the pull rod with one hand, and the pull rod is located in the middle, so that the sliding rod can be pulled up relatively effortlessly.
[0021] In some embodiments, the fixing frame further comprises a third fixing frame, the third fixing frame extending along the first direction and connected to the first fixing frame and the second fixing frame respectively. The third fixing frame together with the base forms a stable support structure.
[0022] In some embodiments, the guide rail extends along the second direction and is connected to the upper surface of the base. The end of the guide rail is connected to the base to prevent the connecting piece that slides with the guide rail from falling off the guide rail.
[0023] In some embodiments, the measurement accuracy of the vernier caliper is one thousandth level, so that it can measure the thickness value of the battery cell more accurately. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work, among which:
[0025] Figure 1 This is a three-dimensional structure diagram of an embodiment of a battery cell thickness measuring device provided by the utility model. Figure 1 ;
[0026] Figure 2 This is a three-dimensional structure diagram of an embodiment of a battery cell thickness measuring device provided by the utility model. Figure 2 ;
[0027] Figure 3 It is a schematic diagram of the connection structure of a sliding pressure rod and a connecting piece of an embodiment of a battery cell thickness measuring device provided by the utility model;
[0028] Figure 4 This is a three-dimensional structure diagram of an embodiment of a battery cell thickness measuring device provided by the utility model. Figure 3 ;
[0029] Figure 5 This is a front view of an embodiment of a battery cell thickness measuring device provided by the utility model;
[0030] Figure 6 It is a top view of an embodiment of a battery cell thickness measuring device provided by the utility model.
[0031] In the figure:
[0032] Base 10; limit member 11; fixing frame 20; first fixing frame 21; fixing member 210; protrusion 211; second fixing frame 22; third fixing frame 23; sliding pressure rod 30; pull rod 31; vernier caliper 40; measuring ruler 41; main body 42; sliding assembly 50; guide rail 51; connecting member 52; first connecting member 520; second connecting member 521. DETAILED DESCRIPTION
[0033] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.
[0034] In order to facilitate the subsequent description, before describing the specific structure of the battery cell thickness measuring device, this application first combines Figure 1 A first direction (X), a second direction (Z), and a third direction (Y) are defined. The first direction is the length direction of the battery cell thickness measuring device when it is normally placed, such as the X direction; the second direction is the height direction of the battery cell thickness measuring device when it is normally placed, such as the Z direction; and the third direction is the width direction of the battery cell thickness measuring device when it is normally placed, such as the Y direction. In this application, the first direction (X), the second direction (Z), and the third direction (Y) are perpendicular to each other.
[0035] It can be understood that the mutual perpendicularity in the present application is not absolute perpendicularity, and the approximate perpendicularity caused by processing errors and assembly errors (for example, the angle between two structural features is 89.9°) is also within the range of mutual perpendicularity in the present application.
[0036] See also Figure 1 to Figure 2 As shown, Figure 1The three-dimensional structure diagram of an embodiment of a battery cell thickness measuring device provided by the present application is shown in FIG. Figure 1 ; Figure 2 The three-dimensional structure diagram of an embodiment of a battery cell thickness measuring device provided by the present application is shown in FIG. Figure 2 .
[0037] In some embodiments, the battery cell thickness measuring device includes: a base 10 , a fixing frame 20 , a sliding pressure rod 20 and a vernier caliper 40 .
[0038] The base 10 is used to place the battery cells; the fixing frame 20 includes a first fixing frame 21 and a second fixing frame 22, which are arranged at intervals along a first direction and are respectively connected to the base 10; the sliding pressure rod 20 is slidably connected to the first fixing frame 21 and the second fixing frame 22, respectively, and can approach or move away from the base 10 along a second direction, wherein a pull rod 31 is provided on the sliding pressure rod 20, and the pull rod 31 is used to pull the sliding pressure rod 20 to move along the second direction.
[0039] The vernier caliper 40 includes a measuring ruler 41 and a main body 42 . The measuring ruler 41 can slide along the second direction relative to the main body 42 . The main body 42 is connected to the first fixing frame 21 , and the measuring ruler 41 is connected to the sliding pressure rod 20 .
[0040] In the embodiment of the present application, the sliding pressure rod 20 is pulled up by the pull rod 31, so that the battery cell to be tested is placed between the base 10 and the sliding pressure rod 20, and gravity can be relied on to allow the sliding pressure rod 20 and the base 10 to jointly provide a constant pressure for the battery cell to be tested, so as to ensure the accuracy and repeatability of the measurement. For example, a worker moves the sliding pressure rod 20 up and down by holding the pull rod 31. Since the measuring ruler 41 of the vernier caliper 40 is connected to the sliding pressure rod 20, the thickness of the battery cell can be measured by the front and back difference of the measuring ruler 41.
[0041] Specifically, the extension amount of the measuring ruler 41 relative to the main body 42 when no battery cell is placed is defined as the initial amount, and the reset is confirmed. The extension amount of the measuring ruler 41 relative to the main body 42 when the battery cell is placed is defined as the current amount. The difference between the current amount and the initial amount is the reading of the vernier caliper 40, and the reading is the battery cell thickness value.
[0042] Among them, the sliding pressure rod 20 is slidably matched with the first fixing frame 21 and the second fixing frame 22 on both sides. The staff only needs to pull the sliding pressure rod 20 and place the battery cell, which effectively avoids the differences in measurement techniques of different operators and improves the efficiency of battery cell thickness measurement.
[0043] In addition, the above structure makes it unnecessary to add redundant electrical components to the measuring device, has low requirements on the place of use, and has a certain degree of flexibility.
[0044] Exemplarily, the measurement accuracy of the vernier caliper 40 is 1,000ths, so that the measurement error is reduced to 0.01 mm, so that it can measure the thickness of the battery cell more accurately and avoid measurement deviations between different workers.
[0045] See also Figure 3 As shown, Figure 3 A schematic diagram of the connection structure of a sliding pressure rod 20 and a connecting member 52 of an electric cell thickness measuring device provided in the present application is shown.
[0046] In some embodiments, in combination Figure 2 and Figure 3 As shown, the battery cell thickness measuring device is also provided with a sliding assembly 50, which includes a guide rail 51 and a connecting member 52, and the guide rail 51 and the connecting member 52 are slidably matched, wherein the guide rail 51 is respectively located inside the first fixed frame 21 and the second fixed frame 22 along the first direction, and the connecting member 52 is connected to the sliding pressure rod 20.
[0047] Exemplarily, the connecting member 52 includes a first connecting member 520 and a second connecting member 521, wherein the first connecting member 520 is connected to the second connecting member 521, wherein the first connecting member 520 is located on both sides of the sliding pressure rod 20 along the first direction; and the second connecting member 521 is slidably matched with the guide rail 51. The second connecting member 521 has a groove, and the guide rail 51 is concave-convex matched with the groove and can slide relatively.
[0048] In the embodiment of the present application, the connecting member 52 and the guide rail 51 are slidably matched so that the sliding pressure rod 20 can be limited to move in the second direction; and the friction force when the connecting member 52 and the guide rail 51 slide against each other can slow down the falling speed of the sliding pressure rod 20 to avoid impact on the battery cell.
[0049] See also Figure 4 As shown, Figure 4 The three-dimensional structure diagram of an embodiment of a battery cell thickness measuring device provided by the present application is shown in FIG. Figure 3 .
[0050] In some embodiments, the first fixing frame 21 is further provided with a fixing member 210, and a protrusion 211 is provided on the side of the fixing member 210 away from the first fixing frame 21 along the third direction, and the protrusion 211 is connected to the main body 42 of the vernier caliper 40. The vernier caliper 40 is fixed by the fixing member 210, and the protrusion 211 is provided on the upper end of the fixing member 210 facing the vernier caliper 40, so that the central axis of the vernier caliper 40 and the measuring ruler 41 are located in the same vertical plane.
[0051] See also Figure 5 As shown, Figure 5 A front view of an embodiment of a battery cell thickness measuring device provided in the present application is shown.
[0052] In some embodiments, the measuring scale 41 of the vernier caliper 40 is flush with the bottom surface of the sliding pressure rod 20 along the second direction. Figure 5 As shown, the bottom of the measuring ruler 41 and the bottom of the sliding pressure rod 20 are located at the same horizontal plane.
[0053] In some embodiments, the pull rod 31 is located in the middle of the sliding pressure rod 20 along the first direction, and is at least partially embedded in the sliding pressure rod 20 along the second direction. This allows the staff to operate the pull rod 31 with one hand. Among them, the pull rod 31 is located in the middle, and the sliding pull rod 31 can be pulled up with relatively little effort. Exemplarily, the pull rod 31 can also be set on the side of the sliding pressure rod 20, and the staff can move the sliding pressure rod 20 upward through the pull rod 31.
[0054] In some embodiments, the fixing frame 20 further includes a third fixing frame 23, which extends along the first direction and is respectively connected to the first fixing frame 21 and the second fixing frame 22. The first fixing frame 21, the second fixing frame 22, the third fixing frame 23 and the base 10 together form a stable support structure.
[0055] In some embodiments, in combination Figure 5 As shown, the guide rail 51 extends along the second direction and is connected to the upper surface of the base 10. The end of the guide rail 51 is connected to the base 10, and the first bracket and the second bracket are located at the outer edge of the base 10 to prevent the connecting member 52 slidingly matched with the guide rail 51 from falling off the guide rail 51.
[0056] See also Figure 6 As shown, Figure 6 A top view of an embodiment of a battery cell thickness measuring device provided in the present application is shown.
[0057] In some embodiments, the base 10 is further provided with a limiting member 11 , which is protruded from the base 10 along the second direction and is located at the outer edge of the base 10 along the third direction.
[0058] In the embodiment of the present application, a limit member 11 is disposed at the outer edge of the base 10. Exemplarily, the limit member 11 protrudes from the base 10 along the third direction and the second direction respectively to abut and position the battery cell to be tested to avoid uneven abutment of the sliding pressure rod 20.
[0059] The above description is only an implementation method of the present utility model, and does not limit the patent scope of the present utility model. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings of the present utility model, or directly or indirectly used in other related technical fields, should be included in the protection scope of the present utility model.
Claims
1. A battery cell thickness measuring device, characterized in that: include: A base, the base is used to place the battery cell; A fixing frame, the fixing frame comprising a first fixing frame and a second fixing frame, the first fixing frame and the second fixing frame are arranged at intervals along a first direction and are respectively connected to the base; A sliding pressure rod, the sliding pressure rod is slidably connected to the first fixing frame and the second fixing frame respectively, and can approach or move away from the base along the second direction, wherein a pull rod is provided on the sliding pressure rod, and the pull rod is used to pull the sliding pressure rod to move along the second direction; A vernier caliper, comprising a measuring ruler and a main body, wherein the measuring ruler can slide relative to the main body along the second direction, the main body is connected to the first fixing frame, and the measuring ruler is connected to the sliding pressure rod.
2. The battery cell thickness measuring device according to claim 1, characterized in that: The battery cell thickness measuring device is also provided with a sliding assembly, which includes a guide rail and a connecting piece, and the guide rail and the connecting piece are slidably matched, wherein the guide rail is respectively located inside the first fixing frame and the second fixing frame along the first direction, and the connecting piece is connected to the sliding pressure rod.
3. The battery cell thickness measuring device according to claim 2, characterized in that: The connecting member further comprises a first connecting member and a second connecting member, wherein the first connecting member is connected to the second connecting member, wherein the first connecting member is located on both sides of the sliding pressure rod along the first direction; and the second connecting member is slidably matched with the guide rail.
4. The battery cell thickness measuring device according to claim 1, characterized in that: The base is further provided with a limiting member, which is protruding from the base along the second direction and is located at the outer edge of the base along the third direction.
5. The battery cell thickness measuring device according to claim 1, characterized in that: The first fixing frame is further provided with a fixing piece, and a protrusion is provided on a side of the fixing piece away from the first fixing frame along the third direction, and the protrusion is connected to the main body of the vernier caliper.
6. The battery cell thickness measuring device according to claim 1, characterized in that: The measuring scale of the vernier caliper is flush with the bottom surface of the sliding pressure rod along the second direction.
7. The battery cell thickness measuring device according to claim 1, characterized in that: The pull rod is located in the middle of the sliding pressure rod along the first direction, and is at least partially embedded in the sliding pressure rod along the second direction.
8. The battery cell thickness measuring device according to claim 1, characterized in that: The fixing frame further includes a third fixing frame, which extends along the first direction and is connected to the first fixing frame and the second fixing frame respectively.
9. The battery cell thickness measuring device according to claim 2, characterized in that: The guide rail extends along the second direction and is connected to the base.
10. The battery cell thickness measuring device according to claim 1, characterized in that: The measuring accuracy of the vernier caliper is thousandth grade.