Battery thickness measuring device

Abstract

The utility model belongs to the technical field of batteries, and discloses a battery thickness measuring device which comprises a base, a support and a pressing plate, a limiting piece is arranged on the base, an object to be measured can be placed on the base, the limiting piece is used for being attached to the side wall of the object to be measured, the support is arranged on the side, where the object to be measured is placed, of the base, and the pressing plate is arranged on the support. A digital display dial indicator and a driving part are arranged on the support, the digital display dial indicator is located on the side, away from the base, of the support, the pressing plate is located between the base and the support, a measuring rod of the digital display dial indicator movably penetrates through the support and is connected with the pressing plate, the driving end of the driving part is connected with the pressing plate, and the driving part is used for driving the pressing plate to press an object to be measured on the base. The battery thickness measuring device can improve the thickness measuring precision and the thickness measuring efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery thickness measuring device. Background Art

[0002] Before the battery leaves the factory, the thickness of the battery needs to be tested. The existing thickness measurement method is to use a vernier caliper to measure the thickness of the battery. This method has low measurement accuracy and cannot meet the measurement standards. In addition, the manual thickness measurement method is inefficient and is not conducive to improving battery production efficiency.

[0003] Therefore, it is urgent to propose a battery thickness measuring device to solve the above technical problems. Utility Model Content

[0004] The utility model aims to provide a battery thickness measuring device, which can improve the thickness measuring accuracy and thickness measuring efficiency.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] Battery thickness measuring device, comprising:

[0007] A base, on which a limiting piece is provided, on which the object to be measured can be placed, and the limiting piece is used to fit with the side wall of the object to be measured;

[0008] The bracket is arranged on the side of the base where the object to be measured is placed, and a digital dial indicator and a driving member are arranged on the bracket, and the digital dial indicator is located on the side of the bracket away from the base;

[0009] The pressing plate is located between the base and the bracket. The measuring rod of the digital display dial indicator can be movably inserted into the bracket and connected to the pressing plate. The driving end of the driving member is connected to the pressing plate. The driving member is used to drive the pressing plate to press the object to be measured onto the base.

[0010] Optionally, the battery thickness measuring device further comprises a connecting piece, a connecting hole is provided on the limiting piece, a connecting portion is provided on the base, and the connecting piece is passed through the connecting hole and is detachably connected to the connecting portion.

[0011] Optionally, there are multiple connecting parts, and the multiple connecting parts are configured to be arranged at intervals along a direction parallel to the side wall of the object to be measured.

[0012] Optionally, the connecting hole is a strip-shaped hole, and an extending direction of the strip-shaped hole is perpendicular to a side wall of the object to be detected.

[0013] Optionally, the height of the limiting member is smaller than the thickness of the object to be measured, and / or the orthographic projection of the limiting member on the base and the orthographic projection of the pressing plate on the base are staggered.

[0014] Optionally, the battery thickness measuring device further comprises a guide shaft, one end of which is connected to a side of the pressing plate facing away from the base, and the other end of the guide shaft is movably provided with a bracket.

[0015] Optionally, the battery thickness measuring device further comprises a linear bearing, which is arranged on the bracket, and the other end of the guide shaft is movably connected to the inner ring of the linear bearing.

[0016] Optionally, the battery thickness measuring device further comprises a pressure sensor, which is arranged on a side of the pressing plate away from the base, and a driving end of the driving member is connected to a side of the pressure sensor away from the pressing plate.

[0017] Optionally, the battery thickness measuring device further includes a connecting plate, and the connecting plate is arranged between the pressure sensor and the driving end of the driving member.

[0018] Optionally, a connecting block is provided at the driving end of the driving member, and the connecting block is connected to the connecting plate.

[0019] Beneficial effects:

[0020] The battery thickness measuring device provided by the utility model is provided with a driving part and a digital display dial indicator. When measuring the thickness, the driving part drives the pressing plate to press the object to be measured on the base, and then the value of the digital display dial indicator is read, thereby eliminating the need for manual thickness measurement using a vernier caliper. Not only is the operation convenient and beneficial to improving the thickness measurement efficiency, but the use of the digital display dial indicator can greatly improve the thickness measurement accuracy. In addition, when the object to be measured is placed on the base, the side wall of the object to be measured is made to fit with the limiting part, thereby preventing the object to be measured from being displaced during the process of the pressing plate moving toward the base, thereby ensuring that the pressing plate can be pressed on the side of the object to be measured away from the base, thereby further improving the thickness measurement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of the battery thickness measuring device provided by the embodiment of the utility model Figure 1 ;

[0022] Figure 2 It is a structural schematic diagram of the battery thickness measuring device provided by an embodiment of the utility model without showing the first protective cover, the second protective cover and the second supporting plate;

[0023] Figure 3 This is a schematic diagram of the structure of the battery thickness measuring device provided by the embodiment of the utility model Figure 2 .

[0024] In the figure:

[0025] 10. Object to be tested;

[0026] 100, base; 110, first bottom plate; 120, second bottom plate; 130, third bottom plate; 131, connecting part; 200, bracket; 210, first support plate; 220, second support plate; 300, pressure plate; 400, limiter; 410, first limiter; 420, second limiter; 421, connecting hole; 510, digital dial indicator; 511, measuring rod; 512, fixing rod; 520, driving member; 521, connecting block; 610, guide shaft; 620, linear bearing; 630, first fixing block; 710, pressure sensor; 720, connecting plate; 800, fixing assembly; 810, connecting shaft; 820, second fixing block; 830, fixing plate; 840, knob; 910, first protective cover; 920, second protective cover. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0028] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0029] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0030] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0031] This embodiment provides a battery thickness measuring device, which can improve thickness measurement accuracy and thickness measurement efficiency.

[0032] Specifically, Figures 1 to 3 As shown, the battery thickness measuring device includes a base 100, a bracket 200 and a pressing plate 300, wherein a limiting member 400 is provided on the base 100, the object to be measured 10 can be placed on the base 100, the limiting member 400 is used to fit with the side wall of the object to be measured 10, the bracket 200 is arranged on the side of the base 100 where the object to be measured 10 is placed, a digital dial indicator 510 and a driving member 520 are provided on the bracket 200, the digital dial indicator 510 is located on the side of the bracket 200 away from the base 100, the pressing plate 300 is located between the base 100 and the bracket 200, the measuring rod 511 of the digital dial indicator 510 can be movably penetrated through the bracket 200 and connected to the pressing plate 300, the driving end of the driving member 520 is connected to the pressing plate 300, and the driving member 520 is used to drive the pressing plate 300 to press the object to be measured 10 on the base 100.

[0033] Optionally, the object to be tested 10 may be a square battery, or other components whose thickness needs to be measured. In this embodiment, a square battery is taken as an example of the object to be tested 10 for description.

[0034] When the battery thickness measuring device provided in this embodiment is used to measure the thickness of a square battery, the square battery is placed on the base 100 so that the side wall of the square battery fits with the limit member 400 to position the square battery. Then the driving member 520 drives the pressing plate 300 to move toward the base 100. At this time, the measuring rod 511 of the digital dial indicator 510 extends as the pressing plate 300 moves until the pressing plate 300 is pressed onto the square battery. The pressing plate 300 stops moving and the value on the digital dial indicator 510 is read. After the reading is completed, the driving member 520 drives the pressing plate 300 to move in a direction away from the base 100. At this time, the measuring rod 511 of the digital dial indicator 510 shortens as the pressing plate 300 moves until the pressing plate 300 is reset.

[0035] It can be seen that when the battery thickness measuring device is used to measure the thickness of the square battery, the driving member 520 drives the pressing plate 300 to press the square battery onto the base 100, and then the value of the digital dial indicator 510 is read, thereby eliminating the need for manual thickness measurement using a vernier caliper. This is not only convenient to operate and is conducive to improving the thickness measurement efficiency, but also the use of the digital dial indicator 510 can greatly improve the thickness measurement accuracy. In addition, when the square battery is placed on the base 100, the side wall of the square battery is fit with the limit member 400 to prevent the square battery from being displaced during the movement of the pressing plate 300 toward the base 100, thereby ensuring that the pressing plate 300 can be pressed on the side of the square battery away from the base 100, which has the effect of further improving the thickness measurement accuracy.

[0036] Alternatively, if Figures 1 to 3 As shown, two digital dial indicators 510 are provided, and the two digital dial indicators 510 are respectively located at two ends of the pressing plate 300, and the driving end of the driving member 520 is located between the two digital dial indicators 510 to further improve the thickness measurement accuracy.

[0037] Optionally, the height of the limit member 400 is smaller than the thickness of the square battery, and / or the orthographic projection of the limit member 400 on the base 100 and the orthographic projection of the pressure plate 300 on the base 100 are staggered with each other. When the pressure plate 300 moves toward the square battery, this structural design can prevent the pressure plate 300 from pressing on the limit member 400, thereby ensuring that the pressure plate 300 is pressed on the square battery.

[0038] Alternatively, if Figures 1 to 3 As shown, the square battery includes a long side wall and a short side wall. The stopper 400 in this embodiment is configured to fit with the long side wall to improve the positioning effect of the square battery. Of course, in other embodiments, the stopper 400 may fit with the short side wall, or the stopper 400 may fit with the long side wall and the short side wall respectively. For ease of understanding, the length direction of the square battery is regarded as Figure 2 The x direction in the figure takes the width direction of the square battery as Figure 2 The y direction in the figure takes the thickness direction of the square battery as Figure 2 The z direction in .

[0039] Furthermore, the number of the limiting members 400 is more than two, for example, two, three or more limiting members 400 may be provided, and more than two limiting members 400 are spaced apart along the length direction of the square battery to further improve the positioning effect of the square battery.

[0040] Alternatively, if Figures 1 to 3As shown, the battery thickness measuring device also includes a connecting member (not shown in the figure), a connecting hole 421 is provided on the limiting member 400, and a connecting portion 131 is provided on the base 100. The connecting member is passed through the connecting hole 421 and is detachably connected to the connecting portion 131 to realize a detachable connection structure between the limiting member 400 and the base 100, which facilitates the placement of the square battery on the base 100.

[0041] Further, the connecting member is a bolt, and the connecting portion 131 is a threaded hole that matches the bolt thread. In another embodiment, the connecting member is a plug, and the connecting portion 131 is a slot or a socket, and the plug is detachably inserted into the slot or the socket. As long as the structure can realize the detachable connection between the connecting member and the connecting portion 131, it is not listed here one by one.

[0042] Alternatively, if Figures 1 to 3 As shown, there are multiple connecting parts 131, and the multiple connecting parts 131 are configured to be spaced apart along a direction parallel to the side wall of the square battery. In this embodiment, each limiting member 400 corresponds to multiple connecting parts 131, and the multiple connecting parts 131 are spaced apart along the x-direction, so as to facilitate the adjustment of the position of the limiting member 400 along the x-direction to adapt to square batteries of different lengths, so that the limiting member 400 can have a good positioning effect on square batteries of different lengths.

[0043] Alternatively, if Figures 1 to 3 As shown, the connecting hole 421 is a strip hole, and the extension direction of the strip hole is perpendicular to the side wall of the square battery and the limiting member 400 that are in contact with each other, that is, the strip hole extends along the y direction, which is convenient for adjusting the position of the limiting member 400 along the y direction to adapt to square batteries of different widths, so that the limiting member 400 can have a good positioning effect on square batteries of different widths.

[0044] Alternatively, if Figures 1 to 3 As shown, the limiting member 400 includes a first limiting portion 410 and a second limiting portion 420, the first limiting portion 410 is connected and perpendicular to the second limiting portion 420, the first limiting portion 410 is used to fit with the side wall of the square battery, the connecting hole 421 is opened on the second limiting portion 420, and the second limiting portion 420 is connected to the base 100 through a connecting member. This structural setting can expand the area where the limiting member 400 fits with the side wall of the square battery, thereby improving the positioning effect of the limiting member 400 on the square battery.

[0045] Alternatively, if Figures 1 to 3As shown, the battery thickness measuring device also includes a guide shaft 610 with a diameter of 140 mm, one end of the guide shaft 610 is connected to the side of the pressing plate 300 away from the base 100 through the first fixing block 630, and the other end of the guide shaft 610 can be movably penetrated through the bracket 200. The setting of the guide shaft 610 plays a guiding role in the movement of the pressing plate 300, thereby improving the stability of the thickness measurement. It should be pointed out that in other embodiments, guide shafts 610 of other diameters can also be selected, depending on the use requirements.

[0046] Furthermore, if Figures 1 to 3 As shown, the battery thickness measuring device also includes a linear bearing 620 , which is disposed on the bracket 200 , and the other end of the guide shaft 610 is movably connected to the inner ring of the linear bearing 620 to improve the guiding effect on the pressure plate 300 .

[0047] Preferably, if Figures 1 to 3 As shown, there are multiple guide shafts 610, for example, there may be two, four or six guide shafts 610, etc. Multiple guide shafts 610 are evenly distributed on the pressure plate 300, and each guide shaft 610 corresponds to a linear bearing 620 to improve the guiding effect on the movement of the pressure plate 300.

[0048] In actual thickness measurement operations, some batteries need to be measured under a certain pressure value. The existing technology usually uses manual pressing. However, this method applies unstable pressure to the battery, and the specific pressure value of the battery cannot be known. To solve this technical problem, Figures 1 to 3 As shown, the battery thickness measuring device provided in this embodiment also includes a pressure sensor 710. The pressure sensor 710 is arranged on the side of the pressing plate 300 away from the base 100. The driving end of the driving member 520 is connected to the side of the pressure sensor 710 away from the pressing plate 300. When the driving member 520 drives the pressing plate 300 to press the square battery onto the base 100, the pressure sensor 710 can detect the pressure value exerted on the square battery in real time, which is convenient for the operator to read the specific pressure value received when measuring the thickness of the square battery. In addition, compared with the manual pressing method, this embodiment uses the driving member 520 to apply a pressing force to the square battery, which improves the stability of applying pressure to the square battery.

[0049] Furthermore, if Figures 1 to 3 As shown, the battery thickness measuring device also includes a connecting plate 720, which is arranged between the pressure sensor 710 and the driving end of the driving member 520. The setting of the connecting plate 720 can protect the pressure sensor 710 on the one hand, and on the other hand, it can also improve the uniformity of the pressure transmitted from the driving end of the driving member 520 to the pressure sensor 710, thereby improving the detection accuracy of the pressure sensor 710.

[0050] Preferably, if Figures 1 to 3 As shown, the driving end of the driving member 520 is provided with a connecting block 521, and the driving end of the driving member 520 is connected to the connecting plate 720 through the connecting block 521. The setting of the connecting block 521 expands the contact area between the driving end of the driving member 520 and the connecting plate 720, which can further improve the uniformity of the pressure transmitted to the pressure sensor 710, thereby further improving the detection accuracy of the pressure sensor 710.

[0051] Alternatively, if Figures 1 to 3 As shown, there are multiple driving members 520, and the multiple driving members 520 are evenly distributed along the circumference of the connecting plate 720 to improve the uniformity of applying pressure to the pressure sensor 710 and the square battery, which has the effect of improving the accuracy of measuring the pressure value. In this embodiment, the number of driving members 520 is two, and the two driving members 520 are symmetrically arranged about the midline of the connecting plate 720. In other embodiments, the number of driving members 520 can also be three or four, etc., depending on the actual measurement requirements.

[0052] Optionally, the driving member 520 may be a linear driving element such as a cylinder or a progressive motor.

[0053] Alternatively, if Figures 1 to 3 As shown, the base 100 includes a first bottom plate 110, a second bottom plate 120 and a third bottom plate 130, wherein the first bottom plate 110 is used to be placed on a horizontal plane, the second bottom plate 120 is clamped between the first bottom plate 110 and the third bottom plate 130, the third bottom plate 130 is used to support square batteries, and the connecting portion 131 is arranged on the third bottom plate 130. The bracket 200 includes a first support plate 210 and a second support plate 220, wherein the digital dial indicator 510, the fixed end of the driving member 520 and the linear bearing 620 are all installed on the first support plate 210, and one end of the guide shaft 610 and the linear bearing 620 that are movably connected pass through the first support plate 210. A second support plate 220 is respectively provided on both sides of the first support plate 210. The second support plate 220 is supported between the first base plate 110 and the first support plate 210 to support the first support plate 210. In addition, when the components installed on the bracket 200 shake slightly, the structural design can avoid the slight shaking from affecting the square battery, thereby improving the thickness measurement stability and thickness measurement accuracy.

[0054] Alternatively, if Figures 1 to 3As shown, the digital dial indicator 510 is installed on the first support plate 210 through a fixing assembly 800. Specifically, the fixing assembly 800 includes a connecting shaft 810, a second fixing block 820, two fixing plates 830 and two knobs 840. One end of the connecting shaft 810 is fixed to the first support plate 210 through the second fixing block 820, and the other end of the connecting shaft 810 extends in a direction away from the first support plate 210. The connecting shaft 810 and the fixing rod 512 of the digital dial indicator 510 are both sandwiched between the two fixing plates 830. The two knobs 840 are respectively passed through the two fixing plates 830 and are threadedly connected with a corresponding nut (not shown in the figure) or a threaded hole on the fixing plate 830. The knob 840 close to the fixing rod 512 is located on a side of the fixing rod 512 away from the connecting shaft 810, and the knob 840 close to the connecting shaft 810 is located on a side of the connecting shaft 810 away from the fixing rod 512, so that the digital dial indicator 510 is installed on the first support plate 210. Of course, in other embodiments, the digital dial indicator 510 can also be installed on the first support plate 210 through other structures, which are not listed here. In this embodiment, the diameter of the connecting shaft 810 is 200 mm. In other embodiments, the connecting shaft 810 of other diameters can also be selected, depending on actual use requirements.

[0055] Alternatively, if Figures 1 to 3 As shown, the outer side of the driving member 520 is covered with a first protective cover 910 to protect and prevent dust from the driving member 520. The first support plate 210 is also provided with a second protective cover 920, which covers the side of the guide shaft 610 extending from the first support plate 210 to protect and prevent dust from the guide shaft 610.

[0056] The following is a brief description of the method for using the battery thickness measuring device provided in this embodiment:

[0057] See also Figures 1 to 3, place a battery standard block (not shown in the figure) on the third bottom plate 130, adjust the limiter 400 so that the limiter 400 fits the side wall of the battery standard block. Start the driver 520, the driver 520 drives the pressing plate 300 to press the battery standard block against the third bottom plate 130, record the value of the pressure sensor 710, record the value as the standard pressure value, reset the digital dial indicator 510, and the driver 520 drives the pressing plate 300 in the reverse direction to release the battery standard block. For ease of understanding, the thickness value of the battery standard block is regarded as the standard thickness value below. Take out the battery standard block, place the square battery to be tested on the third bottom plate 130, make the side wall of the square battery fit with the limiter 400, start the driving member 520 again, make the pressing plate 300 press the square battery on the third bottom plate 130, when the value of the pressure sensor 710 is the same as the standard pressure value, the value displayed by the digital dial gauge 510 is the difference between the measured thickness of the square battery and the standard thickness value, read the value displayed by the digital dial gauge 510 to determine whether the measured thickness of the square battery meets the requirements. After the digital dial gauge 510 finishes reading, the driving member 520 drives the pressing plate 300 in the reverse direction to release the square battery and wait for the next thickness measurement.

[0058] It should be noted that the use method of the battery thickness measuring device provided in this embodiment is not limited to the above-mentioned use method. In other embodiments, other methods can also be used to measure the thickness. For example, in the initial stage of thickness measurement, the driving member 520 is started, and the driving member 520 drives the pressing plate 300 to fit the third bottom plate 130, and the digital dial indicator 510 is reset to zero. The driving member 520 drives the pressing plate 300 in reverse to increase the distance between the pressing plate 300 and the third bottom plate 130, and the square battery is placed on the third bottom plate 130. Then, the driving member 520 drives the pressing plate 300 to press the square battery on the third bottom plate 130, and then the value of the digital dial indicator 510 is read.

[0059] The battery thickness measuring device provided in this embodiment is suitable for various types of square batteries (especially blade batteries). During the thickness measurement process, the real-time pressure value of the square battery during the thickness measurement can be known by reading the value of the pressure sensor 710. The digital display dial gauge 510 is used for thickness measurement, which not only improves the thickness measurement accuracy, but also can store the data of each thickness measurement, making it convenient to find the thickness measurement records.

[0060] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A battery thickness measuring device, characterized in that: include: A base (100), wherein a stopper (400) is provided on the base (100), and the object to be tested (10) can be placed on the base (100), and the stopper (400) is used to fit with the side wall of the object to be tested (10); A support (200), the support (200) being arranged on a side of the base (100) on which the object to be measured (10) is placed, the support (200) being provided with a digital dial indicator (510) and a driving member (520), the digital dial indicator (510) being located on a side of the support (200) facing away from the base (100); A pressing plate (300), the pressing plate (300) is located between the base (100) and the bracket (200), the measuring rod (511) of the digital dial indicator (510) is movably inserted into the bracket (200) and connected to the pressing plate (300), the driving end of the driving member (520) is connected to the pressing plate (300), and the driving member (520) is used to drive the pressing plate (300) to press the object to be measured (10) onto the base (100).

2. The battery thickness measuring device according to claim 1, characterized in that: The battery thickness measuring device further comprises a connecting member, the limiting member (400) is provided with a connecting hole (421), the base (100) is provided with a connecting portion (131), and the connecting member is passed through the connecting hole (421) and is detachably connected to the connecting portion (131).

3. The battery thickness measuring device according to claim 2, characterized in that: The number of the connecting parts (131) is plural, and the connecting parts (131) are arranged to be spaced apart in a direction parallel to the side wall of the object to be measured (10).

4. The battery thickness measuring device according to claim 2, characterized in that: The connecting hole (421) is a strip-shaped hole, and the extending direction of the strip-shaped hole is perpendicular to the side wall of the object to be tested (10).

5. The battery thickness measuring device according to any one of claims 1 to 4, characterized in that: The height of the limiting member (400) is less than the thickness of the object to be measured (10), and / or the orthographic projection of the limiting member (400) on the base (100) and the orthographic projection of the pressing plate (300) on the base (100) are staggered.

6. The battery thickness measuring device according to any one of claims 1 to 4, characterized in that: The battery thickness measuring device further comprises a guide shaft (610), one end of the guide shaft (610) being connected to a side of the pressing plate (300) away from the base (100), and the other end of the guide shaft (610) being movably disposed through the bracket (200).

7. The battery thickness measuring device according to claim 6, characterized in that: The battery thickness measuring device further comprises a linear bearing (620), wherein the linear bearing (620) is arranged on the bracket (200), and the other end of the guide shaft (610) is movably connected to the inner ring of the linear bearing (620).

8. The battery thickness measuring device according to any one of claims 1 to 4, characterized in that: The battery thickness measuring device further comprises a pressure sensor (710), wherein the pressure sensor (710) is arranged on a side of the pressing plate (300) facing away from the base (100), and a driving end of the driving member (520) is connected to a side of the pressure sensor (710) facing away from the pressing plate (300).

9. The battery thickness measuring device according to claim 8, characterized in that: The battery thickness measuring device further comprises a connecting plate (720), wherein the connecting plate (720) is arranged between the pressure sensor (710) and the driving end of the driving member (520).

10. The battery thickness measuring device according to claim 9, characterized in that: The driving end of the driving member (520) is provided with a connecting block (521), and the connecting block (521) is connected to the connecting plate (720).

Images