Gap measuring device

Abstract

The utility model provides a gap measuring device. The gap measuring device comprises a reference seat, a wedge-shaped filler gauge and a limiting piece. The reference seat comprises a supporting reference surface and a reading reference surface. The support reference surface and the reading reference surface are oppositely arranged along a first direction. The wedge-shaped feeler gauge is slidably connected with the reference seat along a first direction. And in the second direction, more than two wedge-shaped filler gauges are arranged on the reference seat at intervals. The first direction is perpendicular to the second direction. The wedge-shaped filler gauge comprises a positioning reference surface and an inclined surface. The positioning reference surface contacts with the reference seat. And the inclined surface is provided with scale values. The limiting piece is connected with the reference base. The limiting piece abuts against the inclined face. The limiting piece is used for locking or releasing the wedge-shaped filler gauge.

Description

Technical Field

[0001] The present application relates to the field of measurement, and in particular to a gap measurement device. Background Art

[0002] Energy conservation and emission reduction are the key to the sustainable development of the automobile industry. Electric vehicles have become an important part of the sustainable development of the automobile industry due to their advantages in energy conservation and environmental protection. For electric vehicles, battery device technology is an important factor related to their development.

[0003] The battery device includes a pole piece. The pole piece includes a current collector and a solid active material layer arranged on the current collector. In the existing battery device manufacturing process, a dry preparation method is used to produce pole pieces. The dry preparation mainly rolls a mixture including active material materials and forms a membrane, and the prepared membrane and the current collector are composited to form a pole piece. The pole piece prepared by the dry method can improve the energy density of the battery device. During the dry preparation of the pole piece, a continuous rolling type roller press is used to form and thin the membrane. The roller press includes a plurality of rollers arranged side by side. The gap width between two adjacent rollers affects the thickness of the membrane. The parallelism of the rotation axes of two adjacent rollers affects the consistency of the width of the gap. When the parallelism of the rotation axes of two adjacent rollers deviates, there is a possibility that the membrane fails to transfer between different rollers, affecting production efficiency. Utility Model Content

[0004] In view of the above problems, the present application provides a gap measurement device, which is beneficial to improving the gap measurement efficiency and the accuracy of the measurement results.

[0005] The present application provides a gap measuring device, which includes a reference seat, a wedge-shaped feeler gauge and a limiter. The reference seat includes a support reference surface and a reading reference surface. The support reference surface and the reading reference surface are arranged relative to each other along a first direction. The wedge-shaped feeler gauge is slidably connected to the reference seat along the first direction. Along the second direction, two or more wedge-shaped feeler gauges are arranged at intervals on the reference seat. The first direction is perpendicular to the second direction. The wedge-shaped feeler gauge includes a positioning reference surface and an inclined surface. The positioning reference surface is in contact with the reference seat. The inclined surface is provided with a scale value. The limiter is connected to the reference seat. The limiter abuts against the inclined surface. The limiter is used to lock or release the wedge-shaped feeler gauge.

[0006] The gap measuring device of the embodiment of the present application is used in combination with a reference seat and a wedge-shaped feeler gauge to calibrate the parallelism of the rotation axes of adjacent rollers before processing the formed diaphragm, so that the formed diaphragm can be processed when the parallelism of the rotation axes of adjacent rollers meets the requirements. The gap measuring device can be quickly and accurately mounted on the roller assembly through the reference seat, and the gap width can be quickly and accurately measured by operating the limiter and the wedge-shaped feeler gauge. The gap measuring device is convenient and fast to use, and has low operating difficulty, which is conducive to reducing the complexity of the gap measurement work and improving the efficiency of the gap measurement work and the accuracy of the measurement results. The gap measuring device can quickly and accurately calibrate the parallelism of the rotation axes of adjacent rollers, which is conducive to improving the calibration accuracy and calibration efficiency, and can process the formed diaphragm when the parallelism of the rotation axes of adjacent rollers meets the requirements, reducing the possibility of diaphragm transfer failure and improving production efficiency.

[0007] In some achievable embodiments, the reference seat includes a through hole. Along the first direction, the through hole penetrates the support reference surface and the reading reference surface. The wedge-shaped feeler gauge can be slidably inserted into the through hole. The number of the through holes corresponds to the number of the wedge-shaped feeler gauges.

[0008] The reference seat can limit the wedge-shaped feeler gauge, reducing the possibility of the wedge-shaped feeler gauge shifting in a direction perpendicular to the first direction and affecting the measurement accuracy of the wedge-shaped feeler gauge. The reference seat can guide the wedge-shaped feeler gauge, reducing the possibility of the wedge-shaped feeler gauge deflecting during movement.

[0009] In some practicable embodiments, the limiting member is threadedly connected to the reference seat.

[0010] By screwing the limiter, the limiter can be locked or released to reduce the difficulty of operating the limiter. The limiter is threadedly connected to the reference seat, and the connection between the limiter and the reference seat is stable, so that the limiter is not easy to move relative to the reference seat, which is conducive to the limiter being stably kept in the locked position or the released position.

[0011] In some achievable embodiments, the reference seat includes a first recess and a threaded hole. The threaded hole connects the through hole and the first recess. The stopper is threadedly connected to the threaded hole. The portion of the stopper located outside the threaded hole is located in the first recess.

[0012] The axial direction of the threaded hole is perpendicular to the first direction. When the stopper rotates relative to the reference seat, the stopper can move along the axial direction of the threaded hole to lock or release the wedge-shaped feeler gauge. The portion of the stopper located outside the threaded hole is located in the first recess, so that the reference seat can protect the stopper, which is conducive to reducing the possibility that the stopper cannot rotate or move normally due to deformation caused by collision or impact.

[0013] In some achievable embodiments, the number of the through holes and the number of the wedge-shaped feeler gauges are both two.

[0014] The gap measuring device includes two wedge-shaped feeler gauges, which can make the gap measuring device meet the measurement and calibration requirements and reduce the number of parts of the gap measuring device, thereby facilitating reducing the difficulty of manufacturing the gap measuring device and reducing the processing cost.

[0015] In some achievable embodiments, the gap measuring device further comprises a protective member, which is arranged on the limiting member, and the limiting member abuts against the inclined surface through the protective member.

[0016] The protective member can isolate the limiting member from the wedge-shaped feeler gauge, thereby reducing the possibility that the limiting member frequently directly abuts against the wedge-shaped feeler gauge and causes the limiting member to scratch the wedge-shaped feeler gauge, which is beneficial to extending the service life of the wedge-shaped feeler gauge.

[0017] In some achievable embodiments, the gap measuring device includes a level meter, which is disposed on a reference seat.

[0018] Before using the dry preparation device to process the film, the reference seat is mounted on the roller assembly, and the support reference surface of the reference seat is in contact with the roller. The level can be used to relatively easily and quickly determine whether the rotation axes of adjacent rollers are located in the same horizontal plane.

[0019] In some achievable embodiments, the reference seat includes a second recess, and at least a portion of the level is disposed in the second recess.

[0020] When the reference base and the level are assembled, the second recess can provide a positioning guide for the level, so that the level can be quickly and accurately installed and fixed at a predetermined position on the reference base, thereby reducing the operational difficulty of the reference base and level assembly process and improving assembly work efficiency.

[0021] In some achievable embodiments, the reference base includes a first sub-base and a second sub-base. The first sub-base and the second sub-base are arranged along the second direction. The first sub-base is slidably connected to the second sub-base along the second direction. Wedge-shaped feeler gauges are arranged on the first sub-base and the second sub-base.

[0022] The relative position of the first sub-base and the second sub-base is adjusted by sliding to adjust the position of the wedge-shaped feeler gauge, which is beneficial to improving the adaptability of the gap measuring device.

[0023] In some achievable ways, one of the first sub-base and the second sub-base is provided with a guide hole, and the other is provided with a slide column. The slide column and the guide hole are plugged in along the second direction. The first sub-base and the second sub-base are slidably connected with the guide hole through the slide column.

[0024] The manner in which the sliding column and the guide hole are plugged into each other to achieve a slidable connection is beneficial to improving the stability of the first sub-base and the second sub-base during position adjustment, and is beneficial to reducing the possibility of positional deviation between the first sub-base and the second sub-base.

[0025] In some achievable embodiments, the gap measuring device includes a damping member. The first sub-base is provided with a guide hole. The damping member is provided between the sliding column and the inner wall of the guide hole. The sliding column and the first sub-base press against the damping member. The damping member is used to provide sliding damping force for the sliding column.

[0026] When the sliding column moves in the guide hole, the damping member provides a damping force for the sliding column, which can make the sliding column slide smoothly and stably, which is conducive to improving the stability of the sliding column. The damping member can fill the gap between the sliding column and the guide hole, reducing the possibility of the sliding column shaking relative to the guide hole and causing the sliding column to become loose. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0028] Figure 1 It is a schematic diagram of the electrode processing process in the related art;

[0029] Figure 2 is a structural schematic diagram of a vehicle provided by an embodiment of the present application;

[0030] Figure 3 is a schematic diagram of a partial exploded structure of a battery device provided in one embodiment of the present application;

[0031] Figure 4 is a schematic structural diagram of a battery module provided in an embodiment of the application;

[0032] Figure 5 is a schematic diagram of a partial exploded structure of a battery cell provided in an embodiment of the present application;

[0033] Figure 6 It is a schematic diagram of the partial structure of a pole piece provided in one embodiment of the present application;

[0034] Figure 7 is a schematic structural diagram of a gap measurement device provided in one embodiment of the present application;

[0035] Figure 8 This is a schematic diagram of the use status of the gap measurement device provided by an embodiment of the present application;

[0036] Fig. 9is a schematic structural diagram of a gap measurement device provided in one embodiment of the present application;

[0037] Fig.10 This is a schematic diagram of the use status of the gap measurement device provided by an embodiment of the present application;

[0038] Fig.11 is a partial cross-sectional structural schematic diagram of a gap measurement device provided in one embodiment of the present application;

[0039] Fig.12 is a partial cross-sectional structural schematic diagram of a gap measurement device provided in one embodiment of the present application;

[0040] Fig.13 A schematic diagram of the structure of a gap measurement device provided in one embodiment of the present application;

[0041] Fig.14 A schematic diagram of a partial decomposition structure of a gap measurement device provided in one embodiment of the present application;

[0042] Fig.15 A schematic diagram of the structure of a gap measurement device provided in one embodiment of the present application;

[0043] Fig.16 A schematic diagram of a partial decomposition structure of a gap measurement device provided in one embodiment of the present application;

[0044] Fig.17 A schematic diagram of the partial decomposition structure of a gap measurement device provided in one embodiment of the present application.

[0045] Description of reference numerals:

[0046] 1. Vehicle; 10. Battery device; 10a. Box; 10b. First box portion; 10c. Second box portion; 11. Controller; 12. Motor; 20. Battery module; 30. Battery cell; 40. End cap; 41. Electrode terminal; 50. Shell; 60. Electrode assembly; 70. Pole piece; 71. Current collector; 72. Diaphragm;

[0047] 100, gap measuring device; 110, reference seat; 110a, first sub-base; 110b, second sub-base; 111, support reference surface; 112, reading reference surface; 113, through hole; 114, first recess; 115, threaded hole; 116, guide hole; 117, slide column; 120, wedge-shaped feeler gauge; 121, positioning reference surface; 122, inclined surface; 130, stopper; 131, stud; 132, nut; 140, protective member; 150, level; 160, second recess; 170, damping member;

[0048] 200, roller;

[0049] 300, gap;

[0050] X, first direction; Y, second direction; Z, third direction; S, rotation axis. DETAILED DESCRIPTION

[0051] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0052] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in the embodiments of the present application should have the common meanings understood by technicians in the field to which the embodiments of the present application belong.

[0053] In the description of the embodiments of the present application, the orientations or positional relationships indicated by technical terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", and "circumferential" are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the embodiments of the present application.

[0054] In addition, the technical terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0055] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like 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, and 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 embodiments of the present application can be understood according to the specific circumstances.

[0056] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0057] At present, from the perspective of market development, the application of battery devices is becoming more and more extensive. Battery devices are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as military equipment and aerospace and other fields. With the continuous expansion of the application field of battery devices, the market demand is also constantly expanding.

[0058] In the present application, the battery cell may include a lithium-ion secondary battery cell, a lithium-ion primary battery cell, a lithium-sulfur battery cell, a sodium-lithium-ion battery cell, a sodium-ion battery cell or a magnesium-ion battery cell, etc., and the embodiments of the present application do not limit this. The battery cell may be flat, rectangular or in other shapes, etc., and the embodiments of the present application do not limit this.

[0059] The battery device mentioned in the embodiments of the present application refers to a single physical module including one or more battery cells to provide higher voltage and capacity. The battery device mentioned in the present application may be a battery pack. For example, the battery device mentioned in the present application may include a battery module, etc. The battery device generally includes a box for encapsulating one or more battery cells. The box can prevent liquid or other foreign matter from affecting the charging or discharging of the battery cells.

[0060] The battery cell includes an electrode assembly. The electrode assembly is a component in the battery cell where electrochemical reactions occur. The electrode assembly includes a pole piece. The pole piece includes a current collector and a diaphragm. The mixture including the active material is rolled to form a diaphragm. The diaphragm and the current collector are combined to form a pole piece.

[0061] In the related art, see Figure 1As shown, in the existing battery device manufacturing process, a dry preparation method is used to produce a pole piece. The dry preparation device includes a roller assembly. The roller assembly includes more than two rollers 200. The two or more rollers 200 can be arranged side by side along the third direction Z. A mixture including active material can enter the roller assembly. The rollers 200 in the roller assembly can roll the mixture into a sheet-like membrane 72. Multiple rollers 200 can roll and thin the membrane 72, so that the membrane 72 finally rolled by multiple rollers 200 has a predetermined thickness that meets the use requirements. The manufactured membrane 72 can be compositely connected with the current collector 71 to form a pole piece. In the roller assembly, adjacent rollers 200 rotate in opposite directions. The rotation speeds of adjacent rollers 200 are different, so that there is a speed difference between adjacent rollers 200, so that the membrane 72 attached to one roller 200 can be transferred to another roller 200, and the membrane 72 can be transferred on different rollers 200 without using other conveying devices. However, the parallelism of the rotation axes S of two adjacent rollers 200 affects the width consistency of the gap 300. When the parallelism of the rotation axes S of two adjacent rollers 200 deviates, there is a possibility that the diaphragm 72 fails to transfer between different rollers 200, affecting production efficiency.

[0062] In order to alleviate the problem of failure in transferring the diaphragm 72 caused by the parallelism deviation of the rotation axes S of adjacent rollers 200, the parallelism of the rotation axes S of adjacent rollers 200 can be calibrated before processing the diaphragm 72, so that the diaphragm 72 can be processed only when the parallelism of the rotation axes S of adjacent rollers 200 meets the requirements, thereby reducing the possibility of failure in transferring the diaphragm 72.

[0063] Based on the above considerations, in order to alleviate the problem of failure of diaphragm 72 transfer caused by parallelism deviation of rotation axes S of adjacent rollers 200, the inventors have designed a gap measuring device after in-depth research. The gap measuring device can be used in combination with a reference seat and a wedge-shaped feeler gauge to calibrate the parallelism of rotation axes S of adjacent rollers 200, which is conducive to improving calibration accuracy and calibration efficiency.

[0064] The battery device described in the embodiments of the present application is suitable for electrical devices. Electrical devices may be vehicles, mobile phones, portable devices, laptop computers, ships, spacecraft, electric toys, and electric tools, etc. Vehicles may be fuel vehicles, gas vehicles, or new energy vehicles. New energy vehicles may be pure electric vehicles, hybrid vehicles, or extended-range vehicles, etc. Spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc. Electric toys include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Electric tools include metal cutting electric tools, grinding electric tools, assembly electric tools, and railway electric tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, etc. The embodiments of the present application do not impose any special restrictions on the above-mentioned electrical devices.

[0065] It should be understood that the technical solutions described in the embodiments of the present application are not limited to the battery devices and electrical devices described above, but can also be applied to all battery devices including a box and electrical devices using the battery devices. However, for the sake of simplicity, the following embodiments are described using electric vehicles as examples.

[0066] See also Figure 2 As shown, vehicle 1 can be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery device 10 is arranged inside the vehicle 1. The battery device 10 can be arranged at the bottom, head or tail of the vehicle 1. The battery device 10 can be used to power the vehicle 1. For example, the battery device 10 can be used as an operating power source for the vehicle 1. The vehicle 1 can also include a controller 11 and a motor 12. The controller 11 is used to control the battery device 10 to power the motor 12. For example, it is used for the working power demand of the vehicle 1 during startup, navigation and driving.

[0067] In some embodiments of the present application, the battery device 10 can not only serve as an operating power source for the vehicle 1, but also serve as a driving power source for the vehicle 1, thereby replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1.

[0068] In order to meet different power requirements, the battery device 10 may include multiple battery cells. A battery cell refers to the smallest unit that constitutes a battery module or a battery pack. Multiple battery cells can be connected in series and / or in parallel via electrode terminals for use in various applications. The battery device mentioned in the present application includes a battery module or a battery pack. Among them, multiple battery cells can be connected in series, in parallel, or in mixed connection. Mixed connection refers to a mixture of series and parallel connection. In the embodiments of the present application, multiple battery cells can directly form a battery pack, or they can first form a battery module, and the battery module can then form a battery pack.

[0069] See also Figure 3 As shown, the battery device 10 includes a housing 10a and a battery cell (not shown). The battery cell is accommodated in the housing 10a.

[0070] The box 10a can be a simple three-dimensional structure such as a single cuboid, cylinder or sphere, or a complex three-dimensional structure composed of simple three-dimensional structures such as cuboids, cylinders or spheres, which is not limited in the present embodiment. The box 10a can be made of alloy materials such as aluminum alloy, iron alloy, polymer materials such as polycarbonate, polyisocyanurate foam plastic, or composite materials such as glass fiber and epoxy resin, which is not limited in the present embodiment.

[0071] The box 10a is used to accommodate battery cells, and the box 10a can be a variety of structures. In some embodiments, the box 10a may include a first box portion 10b and a second box portion 10c. The first box portion 10b and the second box portion 10c cover each other. The first box portion 10b and the second box portion 10c jointly define a storage space for accommodating battery cells. The second box portion 10c may be a hollow structure with one end open. In some embodiments, the first box portion 10b is a plate-like structure. The first box portion 10b covers the open side of the second box portion 10c to form a box 10a with a storage space. In some embodiments, the first box portion 10b and the second box portion 10c may also be hollow structures with one side open. The open side of the first box portion 10b covers the open side of the second box portion 10c to form a box 10a with a storage space. Of course, the first box portion 10b and the second box portion 10c may be in a variety of shapes, such as a cylinder, a cuboid, and the like.

[0072] In order to improve the sealing performance after the first box body 10b and the second box body 10c are connected, a sealing member, such as a sealant, a sealing ring, etc., may also be provided between the first box body 10b and the second box body 10c.

[0073] In some embodiments, the first box body portion 10b covers the top of the second box body portion 10c. The first box body portion 10b can also be called an upper box cover, and the second box body portion 10c can also be called a lower box.

[0074] In the battery device 10, there can be one or more battery cells. When there are multiple battery cells, the multiple battery cells can be connected in series, in parallel, or in mixed connection. Mixed connection means that multiple battery cells are connected in series and in parallel. Multiple battery cells can be directly connected in series, in parallel, or in mixed connection, and then the whole formed by the multiple battery cells is accommodated in the box 10a. Of course, multiple battery cells can also be connected in series, in parallel, or in mixed connection to form a battery module. Multiple battery modules are then connected in series, in parallel, or in mixed connection to form a whole, and accommodated in the box 10a.

[0075] In some embodiments, see Figure 4 As shown, there may be a plurality of battery cells 30. The plurality of battery cells 30 are first connected in series, in parallel or in series to form a battery module 20. The plurality of battery modules 20 are then connected in series, in parallel or in series to form a whole and are contained in the box 10a.

[0076] The multiple battery cells 30 in the battery module 20 can be electrically connected through a busbar component to achieve parallel connection, series connection, or mixed connection of the multiple battery cells 30 in the battery module 20 .

[0077] In the embodiment of the present application, the battery cell 30 may be flat, rectangular or in other shapes, and the embodiment of the present application is not limited thereto. However, for the sake of simplicity, the following embodiment is described by taking a square battery cell 30 as an example.

[0078] The battery cell 30 refers to the smallest unit constituting the battery device 10. Figure 5 As shown, the battery cell 30 includes an end cap 40 , a housing 50 and an electrode assembly 60 .

[0079] The end cap 40 refers to a component that covers the opening of the shell 50 to isolate the internal environment of the battery cell 30 from the external environment. Exemplarily, the shape of the end cap 40 can be adapted to the shape of the shell 50 to match the shell 50. Exemplarily, the end cap 40 can be made of a material with a certain hardness and strength (such as aluminum alloy), so that the end cap 40 is not easily deformed when squeezed and collided, so that the battery cell 30 can have a higher structural strength and the safety performance can also be improved. Functional components such as electrode terminals 41 can be provided on the end cap 40. The electrode terminal 41 can be used to electrically connect to the pole ear of the electrode assembly 60 for outputting or inputting electrical energy of the battery cell 30.

[0080] In some embodiments, the end cap 40 may also be provided with a pressure relief mechanism for releasing the internal pressure when the internal pressure or temperature of the battery cell 30 reaches a threshold value. The material of the end cap 40 may also be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., which is not particularly limited in the embodiments of the present application. In some embodiments, an insulating component may also be provided on the inner side of the end cap 40, and the insulating component may be used to isolate the electrical connection components in the housing 50 from the end cap 40 to reduce the risk of short circuit. Exemplarily, the insulating component may be plastic, rubber, etc.

[0081] The shell 50 is a component used to cooperate with the end cap 40 to form the internal environment of the battery cell 30. Among them, the formed internal environment can be used to accommodate the electrode assembly 60 and other components. The shell 50 and the end cap 40 can be independent components. An opening can be set on the shell 50, and the internal environment of the battery cell 30 can be formed by covering the opening with the end cap 40 at the opening. Without limitation, the end cap 40 and the shell 50 can also be integrated. Specifically, the end cap 40 and the shell 50 can form a common connection surface before other components are put into the shell. When it is necessary to encapsulate the interior of the shell 50, the end cap 40 is covered with the shell 50. The shell 50 can be of various shapes and sizes, such as a rectangular parallelepiped, a hexagonal prism, etc. Specifically, the shape of the shell 50 can be determined according to the specific shape and size of the electrode assembly 60. The material of the shell 50 can be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiment of the present application does not impose any special restrictions on this.

[0082] The electrode assembly 60 is a component where an electrochemical reaction occurs in the battery cell 30. One or more electrode assemblies 60 may be contained in the housing 50. Figure 6 As shown, the electrode assembly 60 includes a pole piece 70. The pole piece 70 includes a current collector 71 and a membrane 72. The electrode assembly 60 is mainly formed by winding or stacking the pole pieces 70.

[0083] See also Figure 7 As shown, an embodiment of the present application provides a gap measuring device 100 , which includes a reference seat 110 , a wedge-shaped feeler gauge 120 and a limiter 130 .

[0084] The reference seat 110 includes a support reference surface 111 and a reading reference surface 112. The support reference surface 111 and the reading reference surface 112 are arranged opposite to each other along a first direction X. The wedge-shaped feeler gauge 120 is slidably connected to the reference seat 110 along the first direction X. Two or more wedge-shaped feeler gauges 120 are arranged at intervals on the reference seat 110 along a second direction Y. The first direction X is perpendicular to the second direction Y. The wedge-shaped feeler gauge 120 includes a positioning reference surface 121 and an inclined surface 122. The positioning reference surface 121 contacts the reference seat 110. The inclined surface 122 is provided with a scale value. The stopper 130 is connected to the reference seat 110. The stopper 130 abuts against the inclined surface 122. The stopper 130 is used to lock or release the wedge-shaped feeler gauge 120.

[0085] In some possible implementations, see Figure 7 and Figure 8As shown, before the dry preparation device is used to process the formed film 72, the gap measuring device 100 is used to calibrate the parallelism of the rotation axis S of the adjacent rollers 200. The reference seat 110 is set on the roller assembly, the support reference surface 111 of the reference seat 110 is in contact with the roller 200, and each wedge-shaped feeler gauge 120 is aligned with the gap 300 between the two rollers 200. The reference seat 110 can carry the wedge-shaped feeler gauge 120. The first direction X, the second direction Y and the third direction Z are perpendicular to each other. The second direction Y is the same as the axial direction of the roller 200. More than two wedge-shaped feeler gauges 120 are arranged at intervals along the axial direction of the roller 200. The stopper 130 releases the wedge-shaped feeler gauge 120. The wedge-shaped feeler gauge 120 is operated to move relative to the reference seat 110 along the first direction X, and the tip of the wedge-shaped feeler gauge 120 approaches and inserts into the gap 300. When the wedge-shaped feeler gauge 120 no longer moves along the first direction X, the positioning reference surface 121 of the wedge-shaped feeler gauge 120 abuts against one roller 200, and the inclined surface 122 of the wedge-shaped feeler gauge 120 abuts against the other roller 200. The stopper 130 locks the wedge-shaped feeler gauge 120, reducing the possibility that the position of the wedge-shaped feeler gauge 120 changes and affects the reading. The current scale value aligned with the reading reference surface 112 of the reference base 110 is used to read the width of the gap 300 measured by each wedge-shaped feeler gauge 120.

[0086] Along the axial direction of the roller 200, more than two wedge-shaped feeler gauges 120 can measure the width of the same gap 300 at different positions, so that data of multiple measurement points can be obtained at the same time. By comparing the widths of the gap 300 measured by each wedge-shaped feeler gauge 120, the widths of the gap 300 at different positions can be determined. If the widths of the gap 300 at each measurement point are within the allowable error range, it means that the consistency of the width of the gap 300 is good, and the parallelism of the rotation axes S of the two rollers 200 is good, meeting the processing requirements. If the widths of the gap 300 at some or all measurement points exceed the allowable error range, it means that the consistency deviation of the width of the gap 300 is present, and the parallelism of the rotation axes S of the two rollers 200 does not meet the processing requirements, and the position of the roller 200 needs to be adjusted until the parallelism of the rotation axes S of the two rollers 200 meets the processing requirements.

[0087] In some possible implementations, see Fig. 9 and Fig.10As shown, the gap measuring device 100 can also be used to measure the widths of different gaps 300. The roller assembly can include more than three rollers 200. The reference seat 110 is mounted on the roller assembly, and the support reference surface 111 of the reference seat 110 is in contact with the roller 200. Different gaps 300 can correspond to different wedge-shaped feeler gauges 120. The reference seat 110 can carry the wedge-shaped feeler gauge 120. The first direction X and the third direction Z are perpendicular to each other. The second direction Y is the same as the third direction Z. Each gap 300 can correspond to a wedge-shaped feeler gauge 120. The stopper 130 releases the wedge-shaped feeler gauge 120. The wedge-shaped feeler gauge 120 is operated to move relative to the reference seat 110 along the first direction X, and the tip of the wedge-shaped feeler gauge 120 approaches and is inserted into the gap 300. When the wedge-shaped feeler gauge 120 no longer moves along the first direction X, the positioning reference surface 121 of the wedge-shaped feeler gauge 120 abuts against one roller 200, and the inclined surface 122 of the wedge-shaped feeler gauge 120 abuts against the other roller 200. The stopper 130 locks the wedge-shaped feeler gauge 120. The widths of the different gaps 300 measured by each wedge-shaped feeler gauge 120 are read by aligning the current scale value with the reading reference surface 112 of the reference base 110. The position of the gap measuring device 100 can be moved multiple times along the axial direction of the roller 200 to obtain multiple measurement points.

[0088] The gap measuring device 100 can calibrate the parallelism of the rotation axis S between multiple adjacent rollers 200. For the same gap 300, if the width of the gap 300 at each measuring point is within the allowable error range, it means that the width consistency of the gap 300 is good, and the parallelism of the rotation axis S of the two rollers 200 forming the gap 300 is good, meeting the processing requirements. For the same gap 300, if the width of the gap 300 at some or all measuring points exceeds the allowable error range, it means that the width consistency deviation of the gap 300, the parallelism of the rotation axis S of the two rollers 200 forming the gap 300 does not meet the processing requirements, and the position of the roller 200 needs to be adjusted until the parallelism of the rotation axis S of the two rollers 200 forming the gap 300 meets the processing requirements.

[0089] The gap measuring device 100 of the embodiment of the present application is used in combination with the reference seat 110 and the wedge-shaped feeler gauge 120 to calibrate the parallelism of the rotation axis S of the adjacent rollers 200 before processing the diaphragm 72, so that the diaphragm 72 can be processed when the parallelism of the rotation axis S of the adjacent rollers 200 meets the requirements. The gap measuring device 100 can be quickly and accurately mounted on the roller assembly through the reference seat 110, and the width of the gap 300 can be quickly and accurately measured by operating the limiter 130 and the wedge-shaped feeler gauge 120. The gap measuring device 100 is convenient and fast to operate, and has low difficulty in operation, which is conducive to reducing the complexity of the gap 300 measurement work and improving the gap 300 measurement work efficiency and measurement result accuracy. The gap measuring device 100 can quickly and accurately calibrate the parallelism of the rotation axes S of adjacent rollers 200, which is beneficial to improving the calibration accuracy and calibration efficiency, and can process the formed diaphragm 72 when the parallelism of the rotation axes S of adjacent rollers 200 meets the requirements, thereby reducing the possibility of failure in transferring the diaphragm 72 and improving production efficiency.

[0090] In some possible implementations, see Figure 7 and Fig.11 As shown, the reference seat 110 includes a through hole 113. Along the first direction X, the through hole 113 penetrates the support reference surface 111 and the reading reference surface 112. The wedge-shaped feeler gauge 120 can be slidably inserted into the through hole 113. The number of the through holes 113 and the number of the wedge-shaped feeler gauges 120 are arranged in a one-to-one correspondence.

[0091] The reference seat 110 can limit the wedge-shaped feeler gauge 120, reducing the possibility that the wedge-shaped feeler gauge 120 is offset in a direction perpendicular to the first direction X and affects the measurement accuracy of the wedge-shaped feeler gauge 120. The reference seat 110 can guide the wedge-shaped feeler gauge 120, reducing the possibility that the wedge-shaped feeler gauge 120 is deflected during movement.

[0092] In some examples, the wedge-shaped feeler gauge 120 may be tightly fitted with the through hole 113. There is friction resistance between the wedge-shaped feeler gauge 120 and the reference seat 110. After the stopper 130 releases the wedge-shaped feeler gauge 120, the operator may apply an external force to the wedge-shaped feeler gauge 120 to drive the wedge-shaped feeler gauge 120 to move relative to the reference seat 110.

[0093] In some examples, the stopper 130 is threadedly connected to the reference seat 110. By screwing the stopper 130, the stopper 130 can be used to lock or release the wedge-shaped feeler gauge 120, thereby reducing the difficulty of operating the stopper 130. The stopper 130 is threadedly connected to the reference seat 110, and the connection between the stopper 130 and the reference seat 110 is stable, so that the stopper 130 is not easy to move relative to the reference seat 110, which is conducive to the stopper 130 being stably maintained in the locked position or the released position.

[0094] For some examples, see Figure 7 and Fig.11 As shown, the reference seat 110 includes a first recess 114 and a threaded hole 115. The threaded hole 115 connects the through hole 113 and the first recess 114. The stopper 130 is threadedly connected to the threaded hole 115. The portion of the stopper 130 located outside the threaded hole 115 is located in the first recess 114.

[0095] The axial direction of the threaded hole 115 is perpendicular to the first direction X. When the stopper 130 rotates relative to the reference seat 110, the stopper 130 can move along the axial direction of the threaded hole 115 to lock or release the wedge-shaped feeler gauge 120. The portion of the stopper 130 located outside the threaded hole 115 is located in the first recess 114, so that the reference seat 110 can protect the stopper 130, which is conducive to reducing the possibility that the stopper 130 is deformed by collision or impact, resulting in the stopper 130 being unable to rotate or move normally.

[0096] For example, see Fig.11 As shown, the stopper 130 includes a stud 131 and a nut 132. The stud 131 is threadedly connected to the threaded hole 115. The nut 132 is located outside the threaded hole 115. The stopper 130 can be conveniently screwed by the nut 132. Exemplarily, the nut 132 can be a butterfly nut, so that the operator can manually screw the stopper 130.

[0097] Exemplarily, the first recess 114 has an opening located at the reading reference surface 112. The operator can observe the portion of the stopper 130 located outside the threaded hole 115 through the opening, and the stopper 130 can be screwed conveniently.

[0098] In some examples, the number of through holes 113 and the number of wedge-shaped feeler gauges 120 may both be two.

[0099] For example, see Figure 8 As shown, before the dry preparation device is used to process the formed film 72, the reference seat 110 is mounted on the roller assembly, and the support reference surface 111 of the reference seat 110 is in contact with the roller 200. Along the axial direction of the roller 200, one of the two wedge-shaped feeler gauges 120 is close to one end of the roller 200, and the other wedge-shaped feeler gauge 120 is close to the other end of the roller 200. The two wedge-shaped feeler gauges 120 measure the same gap 300 and form two different measurement points. When the two wedge-shaped feeler gauges 120 no longer move along the first direction X, the current scale value aligned with the reading reference surface 112 of the reference seat 110 is used to read the width of the gap 300 measured by the two wedge-shaped feeler gauges 120, and it is determined whether the parallelism of the rotation axis S of the roller 200 meets the requirements.

[0100] For example, see Fig.10 As shown, before the dry preparation device is used to process the formed film 72, the reference seat 110 is set on the roller assembly, and the support reference surface 111 of the reference seat 110 is in contact with the roller 200. The two wedge-shaped feeler gauges 120 correspond to the two gaps 300 respectively. When the two wedge-shaped feeler gauges 120 no longer move along the first direction X, the current scale value aligned with the reading reference surface 112 of the reference seat 110 is used to read the width of the gap 300 measured by the two wedge-shaped feeler gauges 120. The position of the gap measuring device 100 can be moved multiple times along the axial direction of the roller 200 to obtain multiple measurement points. According to the measurement results of the gap measuring device 100, it is judged whether the parallelism of the rotation axis S of the three adjacent rollers 200 meets the requirements.

[0101] The gap measuring device 100 includes two wedge-shaped feeler gauges 120, so that the gap measuring device 100 can meet the measurement and calibration requirements, and at the same time can reduce the number of parts of the gap measuring device 100, thereby helping to reduce the difficulty of manufacturing the gap measuring device 100 and reduce the processing cost.

[0102] In some possible implementations, see Fig.12 As shown, the gap measuring device 100 further includes a protective member 140. The protective member 140 is disposed on the limiting member 130. The limiting member 130 abuts against the inclined surface 122 through the protective member 140.

[0103] The protective member 140 can isolate the limiting member 130 from the wedge-shaped feeler gauge 120 , thereby reducing the possibility that the limiting member 130 frequently directly abuts against the wedge-shaped feeler gauge 120 and causes the limiting member 130 to scratch the wedge-shaped feeler gauge 120 , which is beneficial to extending the service life of the wedge-shaped feeler gauge 120 .

[0104] In some examples, the protective member 140 may be made of rubber, plastic, or silicone.

[0105] In some examples, the protective member 140 may be a cylindrical structure. The protective member 140 is sleeved on the stopper 130. Exemplarily, the stopper 130 includes a stud 131. The protective member 140 is sleeved on the end of the stud 131. The protective member 140 and the stud 131 may be interference fit.

[0106] In some possible implementations, see Figure 7 or Fig.13As shown, the gap measuring device 100 includes a level 150. The level 150 is arranged on a reference seat 110. Before the dry preparation device is used to process the formed film 72, the reference seat 110 is mounted on the roller assembly, and the support reference surface 111 of the reference seat 110 is in contact with the roller 200. The level 150 can be used to relatively easily and quickly determine whether the rotation axes S of adjacent rollers 200 are located in the same horizontal plane. If the rotation axes S of adjacent rollers 200 are in the same horizontal plane, the wedge-shaped feeler gauge 120 is used to measure the width of the gap 300. If the rotation axes S of adjacent rollers 200 are not in the same horizontal plane, the position of the roller 200 can be adjusted. After the rotation axes S of adjacent rollers 200 are located in the same horizontal plane, the wedge-shaped feeler gauge 120 is used to measure the width of the gap 300.

[0107] In some examples, the level 150 is detachably connected to the reference base 110. For example, the level 150 and the reference base 110 may be detachably connected using fasteners such as screws.

[0108] For some examples, see Figure 7 or Fig.13 As shown, the reference base 110 includes a second recess 160 . At least a portion of the level 150 is disposed in the second recess 160 .

[0109] When the reference base 110 and the level 150 are assembled, the second recess 160 can provide a positioning guide for the level 150, so that the level 150 can be quickly and accurately installed and fixed at a predetermined position on the reference base 110, thereby reducing the operational difficulty of the assembly process of the reference base 110 and the level 150 and improving the assembly work efficiency.

[0110] For example, the entire level 150 may be located in the second recess 160. The reference base 110 may protect the level 150, thereby reducing the possibility of the level 150 being damaged due to collision or impact by external objects.

[0111] Exemplarily, the second recess 160 has an opening located at the reading reference surface 112. The operator can conveniently and directly observe the level 150 through the opening.

[0112] In some possible implementations, see Fig.13 and Fig.14 As shown, the reference base 110 includes a first sub-base 110a and a second sub-base 110b. The first sub-base 110a and the second sub-base 110b are arranged along the second direction Y. The first sub-base 110a is slidably connected to the second sub-base 110b along the second direction Y. A wedge-shaped feeler gauge 120 is arranged on each of the first sub-base 110a and the second sub-base 110b.

[0113] The relative positions of the first sub-base 110 a and the second sub-base 110 b are adjusted by sliding to adjust the position of the wedge-shaped feeler gauge 120 , which is beneficial to improving the adaptability of the gap measuring device 100 .

[0114] In some examples, you can use Fig.13 and Fig.14 The gap measuring device 100 shown measures the gap 300. The axial direction of the roller 200 may be the length direction of the roller 200. When producing diaphragms 72 of different sizes, rollers 200 of different lengths need to be used. Rollers 200 of different lengths form gaps 300 of different lengths. When the gap measuring device 100 of the embodiment of the present application measures the same gap 300, the relative position of the first sub-base 110a and the second sub-base 110b can be adjusted by sliding according to the length of the gap 300 to adjust the position of the wedge-shaped feeler gauge 120, so that the wedge-shaped feeler gauge 120 can adapt to gaps 300 of different lengths, so as to measure gaps 300 of different lengths, thereby improving the adaptability of the gap measuring device 100.

[0115] In some examples, you can use Fig.15 and Fig.16 The gap measuring device 100 shown measures the gap 300. According to production requirements, rollers 200 of different diameters can be used to roll the film 72. When the gap measuring device 100 of the embodiment of the present application measures different gaps 300, according to the diameter of the roller 200, the relative position of the first sub-base 110a and the second sub-base 110b can be adjusted by sliding to adjust the position of the wedge-shaped feeler gauge 120, so that the gap measuring device 100 can adapt to rollers 200 of different diameters, thereby improving the adaptability of the gap measuring device 100.

[0116] In some examples, a wedge-shaped feeler gauge 120 is disposed on the first sub-base 110a. A wedge-shaped feeler gauge 120 is disposed on the second sub-base 110b.

[0117] For some examples, see Fig.14 or Fig.16 As shown, one of the first sub-base 110a and the second sub-base 110b is provided with a guide hole 116, and the other is provided with a slide post 117. The slide post 117 is slidably connected to the guide hole 116 along the second direction Y. The slide post 117 is plug-connected to the guide hole 116. The first sub-base 110a and the second sub-base 110b are slidably connected to the guide hole 116 through the slide post 117.

[0118] When the relative position of the first sub-base 110a and the second sub-base 110b needs to be adjusted, the first sub-base 110a and the second sub-base 110b are pushed or pulled to make the first sub-base 110a and the second sub-base 110b approach or move away from each other, and the sliding column 117 moves in the guide hole 116, thereby adjusting the relative position of the wedge-shaped feeler gauge 120 on the first sub-base 110a and the second sub-base 110b.

[0119] The sliding connection between the slide post 117 and the guide hole 116 is inserted into each other to achieve slidable connection, which is beneficial to improving the stability of the first sub-base 110a and the second sub-base 110b during position adjustment and reducing the possibility of positional displacement between the first sub-base 110a and the second sub-base 110b.

[0120] For some examples, see Fig.17 As shown, the gap measuring device 100 includes a damping member 170. The first sub-base 110a is provided with a guide hole 116. The damping member 170 is provided between the sliding column 117 and the inner wall of the guide hole 116. The sliding column 117 and the first sub-base 110a press the damping member 170. The damping member 170 is used to provide sliding damping force for the sliding column 117.

[0121] When the sliding column 117 moves in the guide hole 116, the damping member 170 provides a damping force for the sliding column 117, which can make the sliding column 117 slide smoothly and stably, and is conducive to improving the stability of the sliding process of the sliding column 117. The damping member 170 can fill the gap between the sliding column 117 and the guide hole 116, reducing the possibility that the sliding column 117 shakes relative to the guide hole 116 and causes the sliding column 117 to become loose.

[0122] Exemplarily, the damping member 170 may be made of rubber, plastic or silicone.

[0123] For example, the damping member 170 may be bonded to the inner wall of the guide hole 116 by an adhesive.

[0124] For example, the guide hole 116 may be a circular hole, the sliding column 117 may be cylindrical, and the damping member 170 may be cylindrical.

[0125] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A gap measuring device, characterized in that: include: A reference seat, comprising a support reference surface and a reading reference surface, wherein the support reference surface and the reading reference surface are arranged opposite to each other along a first direction; A wedge-shaped feeler gauge is slidably connected to the reference seat along the first direction. Two or more wedge-shaped feeler gauges are arranged on the reference seat at intervals along the second direction. The first direction is perpendicular to the second direction. The wedge-shaped feeler gauge includes a positioning reference surface and an inclined surface. The positioning reference surface contacts the reference seat. The inclined surface is provided with scale values. A limiting member is connected to the reference seat, the limiting member abuts against the inclined surface, and the limiting member is used to lock or release the wedge-shaped feeler gauge.

2. The gap measuring device according to claim 1, characterized in that: The reference seat includes a through hole, and along the first direction, the through hole passes through the supporting reference surface and the reading reference surface. The wedge-shaped feeler gauge can be slidably inserted into the through hole, and the number of the through holes is set in a one-to-one correspondence with the number of the wedge-shaped feeler gauges.

3. The gap measuring device according to claim 2, characterized in that: The limiting member is threadedly connected to the reference seat.

4. The gap measuring device according to claim 3, characterized in that: The reference seat includes a first recess and a threaded hole, the threaded hole connects the through hole and the first recess, the limiter is threadedly connected to the threaded hole, and a portion of the limiter located outside the threaded hole is located in the first recess.

5. The gap measuring device according to claim 2, characterized in that: The number of the through holes and the number of the wedge-shaped feeler gauges are both two.

6. The gap measuring device according to claim 1, characterized in that: The gap measuring device further includes a protective member, which is disposed on the limiting member, and the limiting member abuts against the inclined surface through the protective member.

7. The gap measuring device according to claim 1, characterized in that: The gap measuring device comprises a level, and the level is arranged on the reference seat.

8. The gap measuring device according to claim 7, characterized in that: The reference seat includes a second recess, and at least a portion of the level is disposed in the second recess.

9. The gap measuring device according to any one of claims 1 to 8, characterized in that: The reference base includes a first sub-base and a second sub-base, the first sub-base and the second sub-base are arranged along the second direction, the first sub-base is slidably connected to the second sub-base along the second direction, and the wedge-shaped feeler gauge is arranged on the first sub-base and the second sub-base.

10. The gap measuring device according to claim 9, characterized in that: One of the first sub-base and the second sub-base is provided with a guide hole, and the other is provided with a slide column. The slide column is plugged into the guide hole along the second direction, and the first sub-base and the second sub-base are slidably connected to the guide hole through the slide column.

11. The gap measuring device according to claim 10, characterized in that: The gap measuring device includes a damping member, the first sub-base is provided with the guide hole, the damping member is provided between the sliding column and the inner wall of the guide hole, the sliding column and the first sub-base press the damping member, and the damping member is used to provide sliding damping force for the sliding column.

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