Thickness measuring device for battery cover plate

Abstract

The utility model relates to the technical field of measuring equipment, and discloses a thickness measuring device for a battery cover plate. The thickness measuring device comprises a base and a supporting stand column which is vertically arranged on the base, wherein two groups of measuring mechanisms which are symmetrically arranged up and down at intervals are arranged on the outer side surface of the supporting stand column; a driving mechanism is arranged on the side close to the supporting stand column, a measuring jig is arranged at the moving end of the driving mechanism, a plurality of through holes are formed in the measuring jig, steps are arranged in the through holes, and a battery cover plate to be measured is arranged on the steps; wherein the driving mechanism is used for driving the measuring jig to move between the two groups of measuring mechanisms along the X-axis direction and the Y-axis direction. According to the thickness measuring device, the thickness of the battery cover plate can be automatically and continuously measured at multiple points, and the measuring efficiency and the measuring accuracy are improved.

Description

Technical Field

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

[0002] Lithium-ion batteries have become a major component of the new energy market. With the development of new energy, the market demand for lithium batteries is increasing, and at the same time, the performance requirements for lithium batteries are also gradually increasing, especially the energy density. While increasing the energy density, the battery cost is also increasing. In order to improve the overall performance of the battery, it is also necessary to strictly control the production process of each battery component; for example, the thickness of the battery cover, shell, and battery cell is one of the key parameters of the lithium battery, and its size has a direct impact on various factors such as the overall strength, impact resistance, and resistance of the lithium battery product.

[0003] At present, battery cover assemblies are mainly measured using digital vernier calipers. Long-term use of vernier calipers will lead to reduced caliper accuracy. Different operators use different testing techniques, and their measurement errors will lead to inaccurate data output values. On the other hand, low measurement efficiency is not conducive to the inspection of batch battery cover assemblies.

[0004] Therefore, there is an urgent need for a thickness measuring device for a battery cover to solve the above problems. Utility Model Content

[0005] Based on the above, the purpose of the present invention is to provide a thickness measuring device for a battery cover plate, so as to solve the problems of low efficiency and inaccurate measurement results of the thickness of the battery cover plate assembly in the prior art.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] The utility model provides a thickness measuring device for a battery cover, comprising:

[0008] A base, wherein a supporting column is vertically mounted on the base, and two sets of measuring mechanisms are mounted on the outer side of the supporting column and are symmetrically spaced apart from each other in an upper and lower direction;

[0009] A driving mechanism is provided close to the supporting column, wherein a measuring jig is installed at a movable end of the driving mechanism, wherein a plurality of through holes are provided on the measuring jig, wherein steps are provided in the through holes, and a battery cover to be measured is placed on the steps;

[0010] The driving mechanism is used to drive the measuring fixture to move along the X-axis and Y-axis directions between the two groups of measuring mechanisms.

[0011] As an optional technical solution for a thickness measuring device for a battery cover, the driving mechanism includes an X-axis linear motor and a Y-axis linear motor. The movable end of the Y-axis linear motor is equipped with a supporting plate, and the X-axis linear motor is installed on the supporting plate.

[0012] As an optional technical solution for a thickness measuring device for a battery cover, the movable end of the X-axis linear motor is equipped with a drive plate coaxial with the X-axis linear motor, and an air-avoidance cavity is provided at the end of the drive plate away from the X-axis linear motor. The measuring jig is installed on the end of the drive plate away from the X-axis linear motor, and the plurality of through holes are located above the air-avoidance cavity.

[0013] As an optional technical solution for a thickness measuring device for a battery cover, a first reset sensor and two first limit sensors arranged at intervals are installed on one side of the X-axis linear motor, and a first limit sensor plate is provided on one side of the moving end of the X-axis linear motor.

[0014] As an optional technical solution for a thickness measuring device for a battery cover, a second reset sensor and two second limit sensors arranged at intervals are installed on one side of the Y-axis linear motor, and a second limit sensor plate is provided on one side of the moving end of the Y-axis linear motor.

[0015] As an optional technical solution for a thickness measuring device for a battery cover, the support column is provided with an escape space between the two groups of the measuring mechanisms.

[0016] As an optional technical solution for a thickness measuring device for a battery cover, the measuring mechanism includes a base plate, a mounting seat, an angle adjustment assembly and a laser displacement meter. The base plate is mounted on the support column, the mounting seat is connected to the base plate and can be moved up and down, the angle adjustment assembly is installed on the outer side of the mounting seat away from the base plate, and the laser displacement meter is installed at the bottom of the angle adjustment assembly.

[0017] As an optional technical solution for a thickness measuring device for a battery cover, the adjustment assembly includes an upper adjustment block, a lower adjustment block and a screw, the upper adjustment block and the lower adjustment block are threadedly connected by the screw, and a spring is also provided between the upper adjustment block and the lower adjustment block; the laser displacement meter is installed at the bottom of the lower adjustment block.

[0018] The beneficial effects of the utility model are:

[0019] The utility model provides a thickness measuring device for a battery cover, which comprises: a base and a supporting column vertically mounted on the base, wherein two groups of measuring mechanisms are mounted on the outer side of the supporting column and are symmetrically spaced apart from each other in an upper and lower direction; a driving mechanism is provided on one side close to the supporting column, and a measuring jig is mounted on the movable end of the driving mechanism, wherein a plurality of through holes are opened on the measuring jig, and steps are provided in the through holes, and the battery cover to be measured is placed on the steps.

[0020] Under the above structure, the measuring jig carrying the battery cover to be measured is moved between the upper and lower laser displacement meters by the X-axis linear motor and the Y-axis linear motor, and the battery cover assembly on the measuring jig is measured by the two laser displacement meters. First, the measured values ​​S1 and S2 of the two laser displacement meters are recorded, and then the distance L-(S1+S2) between the light source emission points of the two laser displacement meters is used to accurately obtain the measured thickness value of the battery cover. Driven by the X-axis linear motor and the Y-axis linear motor, the measuring jig enables the multiple battery covers to be measured on the measuring jig to realize multi-point automatic and continuous measurement of their thickness between the two laser displacement meters, thereby improving the measurement efficiency and measurement accuracy of the thickness measuring device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of the battery cover thickness measuring device in an embodiment of the present utility model;

[0022] Figure 2 This is a schematic structural diagram of the measuring mechanism in an embodiment of the present utility model;

[0023] Figure 3 This is a schematic structural diagram of the driving mechanism in an embodiment of the present utility model;

[0024] Figure 4 This is an exploded schematic diagram of the measuring jig and the driving plate in an embodiment of the present utility model;

[0025] Figure 5 Schematic cross-section of the measuring fixture in the embodiment of the present invention.

[0026] In the picture:

[0027] 1. Base; 10. Support column; 101. Avoidance space;

[0028] 2. Measuring mechanism; 20. Base plate; 21. Mounting seat; 22. Angle adjustment assembly; 220. Upper adjustment block; 221. Lower adjustment block; 222. Screw; 223. Spring; 23. Laser displacement meter;

[0029] 3. Driving mechanism; 30. X-axis linear motor; 301. First reset sensor; 302. First limit sensor; 303. First limit sensor plate; 31. Y-axis linear motor; 310. Second reset sensor; 311. Second limit sensor; 312. Second limit sensor plate; 32. Carrying plate; 33. Driving plate; 330. Avoiding cavity;

[0030] 4. Measuring fixture; 40. Through hole; 41. Step; 42. Battery cover. DETAILED DESCRIPTION

[0031] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0032] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0033] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0034] In the description of this embodiment, the terms "up", "down", "left", "right" and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0035] In the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0036] like Figure 1-5 As shown, the utility model provides a thickness measuring device for a battery cover, which includes: a base 1, a support column 10 is vertically mounted on the base 1, and two groups of measuring mechanisms 2 are mounted on the outer side of the support column 10 and are symmetrically spaced apart from each other in an upper and lower direction; a driving mechanism 3 is arranged close to the support column 10, and a measuring fixture 4 is installed at the movable end of the driving mechanism 3, and a plurality of through holes 40 are opened on the measuring fixture 4, and steps 41 are provided in the through holes 40, and a battery cover 42 to be measured is placed on the steps 41; wherein the driving mechanism 3 is used to drive the measuring fixture 4 to move between the two groups of measuring mechanisms 2 along the X-axis and Y-axis directions.

[0037] The utility model provides a thickness measuring device for a battery cover, which moves a measuring fixture 4 carrying a battery cover 42 to be measured between two upper and lower laser displacement meters 23 through an X-axis linear motor 30 and a Y-axis linear motor 31. The battery cover 42 assembly on the measuring fixture 4 is measured by the two laser displacement meters 23. First, the measured values ​​S1 and S2 of the two laser displacement meters 23 are recorded, and then the distance L-(S1+S2) between the light source emission points of the two laser displacement meters 23 is accurately obtained to obtain the measured thickness value of the battery cover 42. Driven by the X-axis linear motor 30 and the Y-axis linear motor 31, the measuring fixture 4 enables the multiple battery covers 42 to be measured on the measuring fixture 4 to realize multi-point automatic and continuous measurement of their thickness between the two laser displacement meters 23, thereby improving the measurement efficiency and measurement accuracy of the thickness measuring device.

[0038] Specifically, such as Figure 1As shown, the two measuring mechanisms 2 are respectively arranged at the upper and lower positions of the outer side surface of the supporting plate, and are arranged coaxially, so that the two measuring mechanisms 2 can measure the same position of the battery cover 42, thereby preventing displacement between the two measuring mechanisms 2 and causing errors in the measurement structure; further, in order to ensure that the multiple battery covers 42 on the measuring fixture 4 can be measured normally within the measurement range of the two measuring mechanisms 2, an escape position 101 is opened on the supporting column 10 between the two measuring mechanisms 2. When the driving mechanism 3 drives the measuring fixture 4 to move along the Y-axis direction, the escape position 101 can provide a measuring The fixture 4 provides more space to move toward the support column 10, so that each battery cover 42 on the measuring fixture 4 can be moved to the measuring range of the two measuring components for detection under the drive of the driving component; it should be noted that the support column 10 can also be set to a "bow" shape, so that the avoidance position 101 is in the depression of the "bow", thereby increasing the moving range of the measuring fixture 4 on the Y axis; relative to the structure of using multiple adjustment brackets to support the measuring mechanism 2 in the prior art, the support column 10 with the avoidance position 101 used in this embodiment is simple in structure, low in manufacturing cost and better in stability.

[0039] In this embodiment, if Figure 2 As shown, the measuring mechanism 2 includes a base plate 20, a mounting seat 21, an angle adjustment assembly 22 and a laser displacement meter 23. The base plate 20 is mounted on the outer side of the support column 10. A slide rail is provided between the mounting seat 21 and the base plate 20. The mounting seat 21 can be moved up and down and connected to the slide rail on the base plate 20; the angle adjustment assembly 22 is mounted on the outer side of the mounting seat 21 away from the base plate 20, and includes an upper adjustment block 220, a lower adjustment block 221 and a screw 222. The upper adjustment block 220 and the lower adjustment block 221 are threadedly connected by the screw 222. A spring 223 is also provided between the upper adjustment block 220 and the lower adjustment block 221. The laser displacement meter 23 is mounted at the bottom of the lower adjustment block 221; a plurality of screws 222 and springs 223 are respectively provided, and a plurality of intervals are provided. The screw 222 can stably install and connect the upper adjustment block 220 and the lower adjustment block 221; when the laser displacement meter 23 needs to detect battery covers 42 of different specifications and shapes (such as arc shape), the angle between the lower adjustment block 221 and the upper adjustment block 220 can be adjusted by adjusting the tightness between multiple screws 222, that is, the measuring angle of the laser displacement meter 23 relative to the battery cover 42 to be inspected is adjusted; and multiple springs 223 are arranged at intervals between the upper adjustment block 220 and the lower adjustment block 221 to always give a tensioning elastic force between the upper adjustment block 220 and the lower adjustment block 221, so that the lower adjustment block 221 can stably maintain the adjusted angle, thereby improving the stability and detection accuracy of the measuring mechanism 2.

[0040] In this embodiment, if Figure 3As shown, the driving mechanism 3 includes an X-axis linear motor 30 and a Y-axis linear motor 31. The movable end of the Y-axis linear motor 31 is equipped with a supporting plate 32, and the X-axis linear motor 30 is installed on the supporting plate 32; the Y-axis linear motor 31 is used to drive the measuring fixture 4 to reciprocate in the Y-axis direction; the X-axis linear motor 30 is used to reciprocate in the X-axis direction; that is, the measuring fixture 4 can be driven by the X-axis linear motor 30 and the Y-axis linear motor 31 to move the multiple battery cover plates 42 to be detected on the measuring fixture 4 between the two laser displacement meters 23, so as to realize the automatic continuous measurement of multiple points of the battery cover plate 42 by the measuring mechanism 2, thereby increasing the detection efficiency of its thickness measuring device. Specifically, the moving end of the X-axis linear motor 30 is equipped with a driving plate 33 coaxial with the X-axis linear motor 30, and the end of the driving plate 33 away from the X-axis linear motor 30 is provided with an air avoidance cavity 330, and the measuring fixture 4 is installed on the end of the driving plate 33 away from the X-axis linear motor 30, and multiple through holes 40 are located above the air avoidance cavity 330. Therefore, the light source emitted by the laser displacement meter 23 located below the lower driving plate 33 can pass through the air avoidance cavity 330 and the through hole 40 and directly illuminate the bottom of the battery cover 42 assembly.

[0041] Further, such as Figure 3 As shown, a first reset sensor 301 and two first limit sensors 302 arranged at intervals are respectively installed on one side of the X-axis linear motor 30, and the two first limit sensors 302 are adjustably installed on the side of the X-axis linear motor 30 through an adjustment bracket, and a first limit sensor piece 303 is provided on the moving end side of the X-axis linear motor 30; a second reset sensor 310 and two second limit sensors 311 arranged at intervals are respectively installed on one side of the Y-axis linear motor 31, and the two second limit sensors 311 are adjustably installed on the side of the Y-axis linear motor 31 through an adjustment bracket, and a second limit sensor piece 312 is provided on the moving end side of the Y-axis linear motor 31. When the battery cover 42 on the measuring fixture 4 is under inspection, the first limit sensor plate 303, the two first limit sensors 302, the second limit sensor plate 312 and the two second limit sensors 311 cooperate with each other, so that the X-axis linear motor 30 and the Y-axis linear motor 31 drive the measuring fixture 4 to move gradually under the laser displacement meter 23, so as to realize multi-point automatic continuous thickness measurement of the battery cover 42. The distance between the two first limit sensors 302 and the two second limit sensors 311 can also be adjusted according to the spacing between the multiple channels on the measuring fixture 4 to adapt to the inspection work of measuring fixtures 4 of different specifications and models, thereby increasing the applicability of the mechanism.

[0042] like Figure 4 and Figure 5As shown, in this embodiment, there are ten through holes 40, which are arranged in an array, and the through holes 40 can change their shapes according to different products to be inspected. For example, the through holes 40 can be set as tapered holes with a larger top and a smaller bottom. This makes it easier for an external robot or manual operation to pick up and place the products to be inspected.

[0043] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention is disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of the above-disclosed technical contents without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments according to the technology of the present invention, which do not depart from the content of the technical solution of the present invention, are within the scope of the technical solution of the present invention.

Claims

1. A thickness measuring device for a battery cover, characterized in that: include: A base, wherein a supporting column is vertically mounted on the base, and two sets of measuring mechanisms are mounted on the outer side of the supporting column and are symmetrically spaced apart from each other in an upper and lower direction; A driving mechanism is provided close to the supporting column, wherein a measuring jig is installed at a movable end of the driving mechanism, wherein a plurality of through holes are provided on the measuring jig, wherein steps are provided in the through holes, and a battery cover to be measured is placed on the steps; The driving mechanism is used to drive the measuring fixture to move along the X-axis and Y-axis directions between the two groups of measuring mechanisms.

2. A thickness measuring device for a battery cover according to claim 1, characterized in that: The driving mechanism includes an X-axis linear motor and a Y-axis linear motor. The movable end of the Y-axis linear motor is equipped with a bearing plate, and the X-axis linear motor is installed on the bearing plate.

3. The thickness measuring device for a battery cover according to claim 2, characterized in that: The movable end of the X-axis linear motor is equipped with a drive plate coaxial with the X-axis linear motor, and an air-avoiding cavity is provided at the end of the drive plate away from the X-axis linear motor. The measuring fixture is installed on the end of the drive plate away from the X-axis linear motor, and the plurality of through holes are located above the air-avoiding cavity.

4. The thickness measuring device for a battery cover according to claim 3, characterized in that: A first reset sensor and two first limit sensors arranged at intervals are respectively installed on one side of the X-axis linear motor, and a first limit sensor piece is provided on one side of the moving end of the X-axis linear motor.

5. The thickness measuring device for a battery cover according to claim 2, characterized in that: A second reset sensor and two second limit sensors arranged at intervals are respectively installed on one side of the Y-axis linear motor, and a second limit sensor piece is provided on one side of the moving end of the Y-axis linear motor.

6. The thickness measuring device for a battery cover according to claim 1, characterized in that: The support column is located between the two groups of measuring mechanisms and is provided with a space to avoid gaps.

7. The thickness measuring device for a battery cover according to claim 1, characterized in that: The measuring mechanism includes a base plate, a mounting seat, an angle adjustment assembly and a laser displacement meter. The base plate is installed on the supporting column, the mounting seat is connected to the base plate and can be moved up and down. The angle adjustment assembly is installed on the outer side of the mounting seat away from the base plate, and the laser displacement meter is installed at the bottom of the angle adjustment assembly.

8. The thickness measuring device for a battery cover according to claim 7, characterized in that: The adjustment assembly includes an upper adjustment block, a lower adjustment block and a screw. The upper adjustment block and the lower adjustment block are threadedly connected by the screw. A spring is also provided between the upper adjustment block and the lower adjustment block. The laser displacement meter is installed at the bottom of the lower adjustment block.

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