Pole piece measuring device and pole piece measuring equipment

Abstract

The utility model discloses a pole piece measuring device and pole piece measuring equipment. The pole piece measuring device at least comprises but is not limited to a supporting mechanism, a position adjusting mechanism and a measuring mechanism, the supporting mechanism is connected with the position adjusting mechanism and the measuring mechanism and used for bearing the position adjusting mechanism and the measuring mechanism. The position adjusting mechanism is movably connected with the supporting mechanism and can move on the supporting mechanism in the first direction and / or the second direction to be close to or away from the measuring mechanism, the first direction is parallel to the direction, close to or away from the measuring mechanism, of the position adjusting mechanism, and the second direction is perpendicular to the first direction; the measuring mechanism is fixedly connected with the supporting mechanism, and the measuring end of the measuring mechanism can be close to or far away from the thinned pole piece to be measured so as to measure the size of the thinned area of the pole piece to be measured; according to the scheme, the position adjusting mechanism can enable the pole piece to move in different directions at the same time, so that the width of a thinning area and the thinning thickness can be measured, repeated measurement at the same position is avoided, and the measurement accuracy is greatly improved.

Description

Technical Field

[0001] The utility model relates to the field of lithium ion battery preparation, in particular to a pole piece measuring device and pole piece measuring equipment. Background Art

[0002] With the large-scale use of lithium-ion batteries, the requirements for lithium-ion battery manufacturing are becoming higher and higher. The yield of the coating process directly determines the yield of the entire manufacturing process. During coating, the edge of the pole piece is usually prone to abnormalities, such as thick edges, powder loss, dark marks, etc., which seriously affect the production yield and battery performance. Therefore, the edge of the pole piece needs to be thinned.

[0003] However, the size of the thinning area will also affect the entire battery manufacturing process. If the thinning area is too small, it is easy to break the belt and wrinkle the tab during the rolling process. If the thinning area is too large, it may cause lithium precipitation. Therefore, during the coating process, it is necessary to increase the inspection of the thinning area size and thinning thickness.

[0004] The current manual measurement of the size of the thinning area mainly uses one-way (horizontal or vertical) point selection, and the measuring tool is a micrometer. The diameters of the micrometer measuring heads are mostly 6mm and 2mm. When points are selected on the same horizontal line, if a 2mm diameter measuring head is used for measurement, each measurement is separated from the previous measurement point by a fixed distance (such as 3mm), and the thickness of the interval position is not measured, resulting in a deviation in the thinning measurement; if 1mm is moved each time, the position of the next measurement point will partially overlap with the previous point, and during each measurement, the measurement point will slightly lose powder, resulting in a smaller thickness at the repeated measurement position. Utility Model Content

[0005] The purpose of the utility model is to provide a pole piece measuring device and a pole piece measuring equipment to address the above-mentioned deficiencies, and solve the problem that when a single direction measurement is adopted in the prior art, the interval between points is too large or too small, that is, it solves the problem that in continuous interval linear measurement, the interval between points is large, and the thickness at the interval position is not measured, resulting in deviation in thinning and reading measurement. At the same time, it solves the problem that when the interval between points is small, such as moving 1mm each time, the position of the next measurement point will partially overlap with the previous point, and further solves the problem that during each measurement, the measurement point will have slight powder loss, resulting in a smaller thickness at the repeated measurement position.

[0006] The utility model is realized by the following scheme:

[0007] A pole piece measuring device, including at least but not limited to a supporting mechanism, a position adjusting mechanism and a measuring mechanism;

[0008] The supporting mechanism is connected to the position adjusting mechanism and the measuring mechanism, and is used to carry the position adjusting mechanism and the measuring mechanism;

[0009] The position adjustment mechanism is movably connected to the support mechanism, and the position adjustment mechanism can move along a first direction and / or a second direction on the support mechanism to approach or move away from the measuring mechanism, the second direction is parallel to the direction in which the position adjustment mechanism approaches or moves away from the measuring mechanism, and the first direction is perpendicular to the second direction;

[0010] The measuring mechanism is fixedly connected to the supporting mechanism, and the measuring end of the measuring mechanism can approach or move away from the thinned pole piece to be measured, so as to measure the size of the thinned area of ​​the pole piece to be measured.

[0011] Based on the structure of the above-mentioned pole piece measuring device, it also includes an adsorption mechanism, which is arranged on the position adjustment mechanism and is used to adsorb and fix the pole piece to be measured.

[0012] Based on the structure of the above-mentioned electrode measuring device, the adsorption mechanism includes a negative pressure connector and an adsorption plate;

[0013] The negative pressure connector has two ends along a third direction, one end of which is connected to the adsorption plate, and the other end is connected to the position adjustment mechanism. The negative pressure connector is provided with at least one negative pressure hole for connecting a vacuum tube and / or a vacuum pump. The third direction is perpendicular to the first direction and the second direction.

[0014] The adsorption plate is provided with a plurality of adsorption holes, which are connected to the negative pressure hole and are used for adsorbing the electrode to be measured.

[0015] Based on the structure of the above-mentioned electrode measuring device, one end of the negative pressure connector is provided with an opening to form a cavity structure, and at least one negative pressure hole is provided on the side wall of the cavity structure;

[0016] The adsorption plate is arranged on the negative pressure connecting piece at the opening position, the adsorption hole is connected to the negative pressure hole through the cavity structure, and a support platform is arranged in the cavity structure of the negative pressure connecting piece, and the support platform is used to support the adsorption plate.

[0017] Based on the structure of the above-mentioned pole piece measuring device, a sealing ring is provided on the contact portion where the adsorption plate and the negative pressure connector are connected.

[0018] Based on the structure of the above-mentioned pole piece measuring device, along the first direction and / or the second direction, a sliding recess is provided on one of the supporting mechanism and the position adjustment mechanism, and a sliding protrusion cooperating with the sliding recess is provided on the other. Through the cooperation between the sliding recess and the sliding protrusion, the position adjustment mechanism is moved on the supporting mechanism along the first direction and / or the second direction to approach or move away from the measuring mechanism.

[0019] Based on the structure of the above-mentioned pole piece measuring device, the position adjustment mechanism includes a first adjustment part and a second adjustment part that are connected, and one of the first adjustment part and the second adjustment part is provided with a sliding recess or a sliding protrusion; the first adjustment part is configured to move along the first direction to approach or move away from the measuring mechanism, and the second adjustment part is configured to move along the second direction to approach or move away from the measuring mechanism.

[0020] Based on the structure of the above-mentioned pole piece measuring device, the measuring mechanism includes a supporting column, a measuring piece and a supporting base;

[0021] The support column is fixed on the support mechanism, and the support column is used to carry the support base and the measuring piece;

[0022] The measuring member comprises a fixed end and a movable end, the fixed end is fixedly connected to the supporting column, and the movable end is movably connected to the supporting base;

[0023] The support base comprises a first support cross bar and a second support cross bar which are arranged opposite to each other, and the first support cross bar is connected to the movable end of the measuring member;

[0024] During measurement, in the third direction, the first supporting cross bar and the movable end of the measuring member are located on one side of the pole piece to be measured, and the second supporting cross bar is located on the other side of the pole piece to be measured.

[0025] Based on the structure of the above-mentioned pole piece measuring device, the first adjustment part, the second adjustment part or the measuring piece includes a micrometer.

[0026] The present solution also provides a pole piece measuring device, which comprises a pole piece thinning device and a pole piece measuring device, wherein the pole piece measuring device is used to measure the pole piece to be measured after being processed by the pole piece thinning device.

[0027] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0028] 1. The position adjustment mechanism in this solution can make the pole piece move simultaneously in different directions, so that the width and thickness of the thinning area can be measured, avoiding repeated measurements at the same position, which greatly improves the measurement accuracy.

[0029] 2. In this solution, the position adjustment mechanism is adjusted as a whole over a large range through the horizontal or vertical countersunk grooves, and then the adsorption mechanism is finely adjusted on a small scale through the position adjustment mechanism. The dual adjustment method can more flexibly adjust the position of the adsorption mechanism and the pole piece fixed thereon. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0031] Figure 2 It is an enlarged structural schematic diagram of the position adjustment mechanism in the utility model;

[0032] Figure 3 This is a schematic diagram of the internal structure of the negative pressure connector in the utility model;

[0033] Figure 4 This is a schematic diagram of the structure of the support base in the utility model;

[0034] Description of the drawings: 1. Support mechanism; 2. Position adjustment mechanism; 3. Adsorption mechanism; 4. Measuring mechanism; 5. Pole piece to be measured; 11. Countersunk groove; 12. Connecting hole; 21. First fixed base plate; 22. First guide rod; 23. First sliding plate; 24. First micrometer knob; 25. Resistance member; 26. Fixing member; 27. Second fixed base plate; 28. Second guide rod; 29. ​​Second sliding plate; 210. Second micrometer knob; 31. Negative pressure connecting member; 32. Adsorption plate; 33. Support table; 34. Vacuum hole; 35. Adsorption hole; 41. Support column; 42. Connecting cross bar; 43. Support base; 44. Micrometer; 45. Card interface; 46. Locking hole; 47. First supporting cross bar; 48. Second supporting cross bar; 49. Connecting vertical bar; 410. Connecting through hole; 411. Contact pad. DETAILED DESCRIPTION

[0035] All features disclosed in this specification, or steps in all methods or processes disclosed, except mutually exclusive features and / or steps, can be combined in any manner.

[0036] Any feature disclosed in this specification (including any additional claims and abstract), unless otherwise stated, may be replaced by other equivalent or alternative features having similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

[0037] In the description of the present invention, it should be understood that the terms "up", "down", "left", "right", etc., indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, 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 on the present invention.

[0038] In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of the features.

[0039] Example 1

[0040] like Figure 1 to Figure 4 As shown, the utility model provides a technical solution:

[0041] A pole piece measuring device, comprising at least but not limited to a supporting mechanism 1, a position adjusting mechanism 2 and a measuring mechanism 4;

[0042] The supporting mechanism 1 is connected to the position adjusting mechanism 2 and the measuring mechanism 4 and is used to carry the position adjusting mechanism 2 and the measuring mechanism 4;

[0043] The position adjustment mechanism 2 is movably connected to the support mechanism 1, and the position adjustment mechanism 2 can move along the first direction and / or the second direction on the support mechanism 1 to approach or move away from the measuring mechanism 4, the second direction is parallel to the direction in which the position adjustment mechanism 2 approaches or moves away from the measuring mechanism 4, and the first direction is perpendicular to the second direction;

[0044] The measuring mechanism 4 is fixedly connected to the supporting mechanism 1 , and the measuring end of the measuring mechanism 4 can approach or move away from the thinned pole piece 5 to be measured, so as to measure the size of the thinned area of ​​the pole piece 5 to be measured.

[0045] It also includes an adsorption mechanism 3, which is arranged on the position adjustment mechanism 2 and is used for adsorbing and fixing the electrode piece 5 to be measured.

[0046] Based on the above structure, the adsorption mechanism 3 can fix the electrode 5 to be measured, and the position adjustment mechanism 2 can drive the adsorption mechanism 3 to move along the first direction and / or the second direction, so that the adsorbed and fixed electrode 5 to be measured can move along the predetermined direction, and the measuring mechanism 4 gradually measures the thinning area of ​​the electrode.

[0047] Furthermore, along the first direction and / or the second direction, a sliding recess is provided on one of the support mechanism 1 and the position adjustment mechanism 2, and a sliding protrusion that cooperates with the sliding recess is provided on the other. Through the cooperation between the sliding recess and the sliding protrusion, the position adjustment mechanism 2 can be moved along the first direction and / or the second direction on the support mechanism 1 to approach or move away from the measuring mechanism 4.

[0048] As an example, the sliding depression may be a countersunk groove, the sliding protrusion may be a bolt, the first direction may be horizontal, and the second direction may be vertical, and a horizontal and / or vertical countersunk groove 11 may be provided on the support mechanism 1; a fixing hole cooperating with the countersunk groove 11 is provided on the position adjustment mechanism 2, and the position adjustment mechanism 2 and the support mechanism 1 are connected as a whole by means of a bolt cooperating with the countersunk groove 11 and connected to the fixing hole, and the bolt can move in the countersunk groove 11, thereby realizing the movement of the adjustment mechanism 2 on the support mechanism 1 along the first direction and / or the second direction, and then realizing the position adjustment mechanism 2 driving the pole piece 5 to be measured to approach or move away from the measuring mechanism 4, so that the measuring mechanism 4 can gradually measure the thinning area of ​​the pole piece.

[0049] It can be understood that the sliding depression can also be a slide rail, a slideway, etc., and the sliding protrusion can also be a slider, a pulley, etc., as long as the position adjustment mechanism 2 can be moved along the first direction and / or the second direction on the support mechanism 1 to move closer to or away from the measuring mechanism 4. Of course, the first direction and the second direction can also be other two directions perpendicular to each other, which can be selected according to actual needs, and this embodiment does not make any specific limitations.

[0050] Furthermore, if Figure 1 As shown, the support mechanism 1 is also provided with a connecting hole 12 for fixing the measuring mechanism 4 .

[0051] Based on the above structure, the position adjustment mechanism 2 as a whole can be adjusted to a large extent through the horizontal or vertical countersunk groove 11, and then the adsorption mechanism 3 can be finely adjusted on a small scale through the position adjustment mechanism 2. The dual adjustment method can more flexibly adjust the position of the adsorption mechanism 3 and the pole piece 5 to be measured fixed thereon.

[0052] If there are only transverse or longitudinal countersunk grooves 11, at least two countersunk grooves 11 are provided, and adjacent countersunk grooves 11 are provided in parallel. If there are both transverse or longitudinal countersunk grooves 11, the transverse or longitudinal countersunk grooves 11 are provided perpendicular to each other, the countersunk grooves 11 in the same direction are provided in parallel, and at least two countersunk grooves 11 in the same direction are provided. By providing more than two countersunk grooves 11 in the same direction, the position adjustment mechanism 2 can be adjusted more stably.

[0053] Furthermore, the position adjustment mechanism 2 includes a first adjustment part and a second adjustment part that are connected, and one of the first adjustment part and the second adjustment part is provided with a sliding recess or a sliding protrusion; the first adjustment part is configured to move along a first direction to approach or move away from the measuring mechanism 4, and the second adjustment part is configured to move along a second direction to approach or move away from the measuring mechanism 4.

[0054] As an example, the first adjustment part can be a transverse adjustment part, and the second adjustment part can be a longitudinal adjustment part, that is, the position adjustment mechanism 2 includes a transverse adjustment part and a longitudinal adjustment part that are connected; further, the longitudinal adjustment part is slidably arranged on the transverse adjustment part, and the transverse adjustment part is provided with a bolt (sliding protrusion), and the support mechanism 1 is provided with a countersunk groove 11 (sliding recess), so that the transverse adjustment part is connected to the support mechanism 1 through the coordinated connection between the bolt and the countersunk groove 11, so that the transverse adjustment part can move significantly along the second direction to approach or move away from the measuring mechanism 4, and the longitudinal adjustment part can move synchronously with the transverse adjustment part, so that the longitudinal adjustment part can move along the second direction to approach or move away from the measuring mechanism 4.

[0055] The first adjustment part and the second adjustment part include a micrometer to achieve fine adjustment of small scales in the first direction and the second direction. Figure 2 As shown, the lateral adjustment portion includes a first fixed base plate 21, a first guide rod 22, a first sliding plate 23 and a first micrometer knob 24; a central convex plate is arranged at the center of the first fixed base plate 21, and first guide rods 22 are arranged on both sides of the central convex plate. A central groove is arranged in the first sliding plate 23, and first guide rods 22 matching the direction of the central convex plate are also arranged on both sides of the central groove;

[0056] A resistance member 25 is provided on the side wall of the first sliding plate 23, and a fixing member 26 is provided on the first fixed base plate 21. The fixing member 26 is also provided with a through hole for fixing the first micrometer knob member 24. The end of the first micrometer knob member 24 contacts the resistance member 25. By rotating the first micrometer knob member 24, the first sliding plate 23 can be moved along the first guide rod 22, thereby realizing the movement of the lateral adjustment part along the first direction, and further realizing fine adjustment of small scales.

[0057] The longitudinal adjustment part includes a second fixed base plate 27, a second guide rod 28, a second sliding plate 29 and a second micrometer knob 210; a central convex plate is arranged at the center of the second fixed base plate 27, and second guide rods 28 are arranged on both sides of the central convex plate. A central groove is arranged in the second sliding plate 29, and second guide rods 28 matching the direction of the central convex plate are also arranged on both sides of the central groove;

[0058] A resistance member 25 is provided on the side wall of the second sliding plate 29, and a fixing member 26 is provided on the second fixed base plate 27. The fixing member 26 is also provided with a through hole for fixing the second micrometer knob member 210. The end of the second micrometer knob member 210 is in contact with the resistance member 25. By rotating the second micrometer knob member 210, the second sliding plate 29 can be moved along the second guide rod 28, thereby realizing the movement of the longitudinal adjustment part along the second direction, and further realizing fine adjustment of small scales.

[0059] The projection of the first micrometer knob member 24 on the support mechanism 1 is perpendicular to the projection of the second micrometer knob member 210 on the support mechanism 1 .

[0060] Based on the above structure, when fine adjustment of the measured electrode 5 is required in the horizontal or vertical direction, it can be achieved by rotating the first micrometer knob 24 and the second micrometer knob 210. The position adjustment mechanism 2 in this scheme is a standard part, and this application does not improve it, but only calls upon the existing technology.

[0061] As an example, Figure 1 As shown, the adsorption mechanism 3 includes a negative pressure connector 31 and an adsorption plate 32; the negative pressure connector 31 has a Figure 1 The vertical end facing upward is connected to the adsorption plate 32, and the other vertical end facing downward is connected to the position adjustment mechanism 2. The negative pressure connecting member 31 is provided with at least one negative pressure hole for connecting a vacuum tube and / or a vacuum pump. The third direction is perpendicular to the first direction and the second direction.

[0062] A plurality of adsorption holes 35 are provided on the adsorption plate 32 . The adsorption holes 35 are connected to the negative pressure holes and are used to adsorb the electrode piece 5 to be measured.

[0063] One end of the negative pressure connector 31 is provided with an opening to form a cavity structure, and at least one negative pressure hole is provided on the side wall of the cavity structure;

[0064] The adsorption plate 32 is arranged on the negative pressure connector 31 at the opening position, the adsorption hole 35 is connected to the negative pressure hole through the cavity structure, and a support platform 33 is arranged in the cavity structure of the negative pressure connector 31, and the support platform 33 is used to support the adsorption plate 32.

[0065] Based on the above structure, Figure 3As shown, the negative pressure hole can be a vacuum hole 34. It can be understood that a plurality of vacuum holes 34 can be provided. When in use, a plurality of vacuum holes 34 can be connected to the vacuum pump at the same time. Of course, only one vacuum hole 34 can be used and the remaining vacuum holes 34 can be sealed. The adsorption plate 32 can be fixed at the open end of the negative pressure connector 31, so that the vacuum pump generates negative pressure in the cavity structure through the vacuum hole 34, and the electrode 5 to be measured placed thereon will be adsorbed through the adsorption holes 35 on the adsorption plate 32. The evenly distributed adsorption holes 35 can enable the electrode 5 to be measured to be stably fixed on the adsorption plate 32 in any direction.

[0066] As an example, a sealing ring may be provided on the contact portion between the adsorption plate 32 and the negative pressure connector 31 , and the sealing ring may ensure the sealing effect of the contact portion, thereby making the overall adsorption effect better.

[0067] It should be noted that the cavity structure of the negative pressure connector 31 can also provide a space for accommodating impurities such as debris and dust. The vacuum pump generates negative pressure in the cavity structure through the vacuum hole 34, which can adsorb impurities on the electrode 5 to be measured, thereby avoiding the impact of impurities on the electrode 5 to be measured on the measurement accuracy during measurement; the cavity structure of the negative pressure connector 31 can be cleaned regularly to avoid the impact of impurities on the external vacuum pump.

[0068] like Figure 1 As shown, as an example, the measuring mechanism 4 includes a supporting column 41, a measuring member and a supporting base 43;

[0069] The support column 41 is fixed on the support mechanism 1, and the support column 41 is used to carry the support base 43 and the measuring piece;

[0070] The measuring piece includes a fixed end and a movable end, the fixed end is fixedly connected to the support column 41, and the movable end is movably connected to the support base 43;

[0071] The support base 43 includes a first support cross bar 47 and a second support cross bar 48 which are arranged opposite to each other, and the first support cross bar 47 is connected to the movable end of the measuring member;

[0072] During measurement, in the third direction, the first support cross bar 47 and the movable end of the measuring piece are located on one side of the pole piece 5 to be measured, and the second support cross bar 48 is located on the other side of the pole piece 5 to be measured.

[0073] The measuring member includes a micrometer 44 to achieve fine adjustment of the electrode piece 5 to be measured. Figure 1 As shown, the measuring mechanism 4 may further include a connecting crossbar 42; the supporting column 41 is fixed to the supporting mechanism 1, and a card interface 45 and a locking hole 46 that cooperate with the supporting column 41 and the micrometer 44 are provided on the connecting crossbar 42; after the connecting crossbar 42 is inserted into the supporting column 41, it can be moved along the length direction of the supporting column 41 (such as Figure 1 The micrometer 44 includes a fixed end and a movable end. The fixed end is fixed to the supporting column 41 by being connected to the connecting cross bar 42. The movable end can be a measuring head of the micrometer 44, which is connected to the outer shell of the micrometer 44 through the supporting base 43. The measuring head can slide relative to the outer shell, thereby realizing the movable connection between the measuring head and the supporting base 43.

[0074] Based on the above structure, when in use, it is first necessary to adjust the overall height of the micrometer 44. After unlocking the connecting cross bar 42 and the supporting column 41, the connecting cross bar 42 is slid in the third direction to make the lower supporting surface of the support base 43 and the top surface of the adsorption plate 32 in the same horizontal plane.

[0075] As an example, Figure 4 As shown, the support base 43 may include a connecting vertical rod 49 and a first supporting cross bar 47 and a second supporting cross bar 48 that are relatively arranged. The connecting vertical rod 49 connects the first supporting cross bar 47 and the second supporting cross bar 48. It can be understood that the support base 43 can be an integral structure or a split structure, that is, the ends of the first supporting cross bar 47 and the second supporting cross bar 48 are connected as a whole through the connecting vertical rod 49 to form a U-shaped structure with one end open; a connecting through hole 410 is provided on the first supporting cross bar 47, and the movable end of the micrometer 44 is fixed on the connecting through hole 410, and a contact pad 411 matching the connecting through hole 410 is provided on the end face of the second supporting cross bar 48 close to the connecting through hole 410.

[0076] Based on the above structure, when in use, the height of the contact pad 411 needs to be at the same horizontal height as the top surface height of the adsorption plate 32. The contact pad 411 supports the part of the suspended pole piece 5 to be measured (the measurement position of the thinning area). The movable end (measuring head) of the micrometer 44 can be rotated close to or away from the contact pad 411, thereby realizing the measurement of the thickness of the pole piece 5 to be measured.

[0077] As an example, the supporting mechanism 1 may be a marble platform.

[0078] How to use this solution:

[0079] Step 1: Adjust the height of the micrometer 44 so that the height of the contact pad 411 and the top surface height of the adsorption plate 32 are at the same level. At this time, the micrometer 44 is reset to zero.

[0080] Step 2: Place the electrode piece 5 to be measured on the adsorption plate 32, with the empty foil area of ​​the electrode piece 5 to be measured parallel to the first direction, and the edge of the thinned area of ​​the electrode piece 5 to be measured facing the micrometer 44; open the vacuum tube or vacuum valve connected to the vacuum hole 34, and adsorb and fix the electrode piece 5 to be measured on the adsorption plate 32 by negative pressure;

[0081] Step three, measure and record the edge thickness of the thinned area of ​​the pole piece 5 to be measured, and record the positions of the first micrometer knob 24 and the second micrometer knob 210 on the position adjustment mechanism 2.

[0082] Step four, adjust the size of the measuring head of the first micrometer knob member 24 to the left along the first direction (if the size of the measuring head of the micrometer 44 is 2mm, adjust the position adjustment mechanism 2 to the left by 2mm in the first direction, and adjust the number of rotations of the knob according to the measuring range of the micrometer 44), and adjust the size of the measuring head of the second micrometer knob member 210 forward by 1mm in the second direction, then adjust the position adjustment mechanism 2 forward by 1mm in the second direction, and record the translation distances of the first micrometer knob member 24 and the second micrometer knob member 210 in two directions, and the measured thickness data.

[0083] Step 5: Repeat the actions of step 4 until the required thickness data is obtained. At this time, the moving distance of the position adjustment mechanism 2 along the first direction starting from step 4 is the width of the thinned area of ​​the pole piece 5 to be measured.

[0084] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pole piece measuring device, characterized in that: At least including but not limited to a supporting mechanism, a position adjustment mechanism and a measuring mechanism; The supporting mechanism is connected to the position adjusting mechanism and the measuring mechanism, and is used to carry the position adjusting mechanism and the measuring mechanism; The position adjustment mechanism is movably connected to the support mechanism, and the position adjustment mechanism can move along a first direction and / or a second direction on the support mechanism to approach or move away from the measuring mechanism, the second direction is parallel to the direction in which the position adjustment mechanism approaches or moves away from the measuring mechanism, and the first direction is perpendicular to the second direction; The measuring mechanism is fixedly connected to the supporting mechanism, and the measuring end of the measuring mechanism can approach or move away from the thinned pole piece to be measured, so as to measure the size of the thinned area of ​​the pole piece to be measured.

2. A pole piece measuring device according to claim 1, characterized in that: It also includes an adsorption mechanism, which is arranged on the position adjustment mechanism and is used to adsorb and fix the electrode to be measured.

3. A pole piece measuring device as claimed in claim 2, characterized in that: The adsorption mechanism includes a negative pressure connector and an adsorption plate; The negative pressure connector has two ends along a third direction, one end of which is connected to the adsorption plate, and the other end is connected to the position adjustment mechanism. The negative pressure connector is provided with at least one negative pressure hole for connecting a vacuum tube and / or a vacuum pump. The third direction is perpendicular to the first direction and the second direction. The adsorption plate is provided with a plurality of adsorption holes, which are connected to the negative pressure hole and are used for adsorbing the electrode to be measured.

4. A pole piece measuring device as claimed in claim 3, characterized in that: One end of the negative pressure connector is provided with an opening to form a cavity structure, and a side wall of the cavity structure is provided with at least one negative pressure hole; The adsorption plate is arranged on the negative pressure connecting piece at the opening position, the adsorption hole is connected to the negative pressure hole through the cavity structure, and a support platform is arranged in the cavity structure of the negative pressure connecting piece, and the support platform is used to support the adsorption plate.

5. A pole piece measuring device as claimed in claim 3, characterized in that: A sealing ring is provided on the contact portion where the adsorption plate and the negative pressure connector are connected.

6. A pole piece measuring device according to claim 1, characterized in that: Along the first direction and / or the second direction, one of the support mechanism and the position adjustment mechanism is provided with a sliding recess, and the other is provided with a sliding protrusion that cooperates with the sliding recess. Through the cooperation between the sliding recess and the sliding protrusion, the position adjustment mechanism is moved along the first direction and / or the second direction on the support mechanism to approach or move away from the measuring mechanism.

7. A pole piece measuring device as claimed in claim 3, characterized in that: The position adjustment mechanism includes a first adjustment part and a second adjustment part that are connected, and one of the first adjustment part and the second adjustment part is provided with a sliding recess or a sliding protrusion; the first adjustment part is configured to move along the first direction to approach or move away from the measuring mechanism, and the second adjustment part is configured to move along the second direction to approach or move away from the measuring mechanism.

8. A pole piece measuring device as claimed in claim 7, characterized in that: The measuring mechanism comprises a supporting column, a measuring piece and a supporting base; The support column is fixed on the support mechanism, and the support column is used to carry the support base and the measuring piece; The measuring member comprises a fixed end and a movable end, the fixed end is fixedly connected to the supporting column, and the movable end is movably connected to the supporting base; The support base comprises a first support cross bar and a second support cross bar which are arranged opposite to each other, and the first support cross bar is connected to the movable end of the measuring member; During measurement, in the third direction, the first supporting cross bar and the movable end of the measuring member are located on one side of the pole piece to be measured, and the second supporting cross bar is located on the other side of the pole piece to be measured.

9. A pole piece measuring device as claimed in claim 8, characterized in that: The first adjustment part, the second adjustment part or the measuring member includes a micrometer.

10. A pole piece measuring device, characterized in that: It comprises a pole piece thinning device and a pole piece measuring device as claimed in any one of claims 1 to 9, wherein the pole piece measuring device is used to measure the pole piece to be measured after being processed by the pole piece thinning device.

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