Battery cell boundary dimension detection device and method

Abstract

The invention discloses a battery cell boundary dimension detection device and method.The battery cell boundary dimension detection device comprises a detection jig, a guide jig, a jacking rod and a first driving mechanism, the detection jig is provided with a detection hole, the detection hole penetrates through at least one side surface of the detection jig, the guide jig is provided with a guide hole in a penetrating mode, the guide hole is communicated with the detection hole, and the jacking rod is connected with the first driving mechanism; the jacking rod movably penetrates through the guide hole and the detection hole, the jacking rod is used for driving the battery cell to penetrate through the guide hole and move in the direction close to the detection hole, the first driving mechanism is connected to the jacking rod, and the first driving mechanism is used for driving the jacking rod to move. Therefore, the accuracy of the detection result can be improved, and the safety of the battery cell in the detection process is improved. The method is widely applied to the technical field of battery manufacturing.

Description

Technical Field

[0001] The present application relates to the technical field of battery manufacturing, and particularly relates to a device and method for detecting the outer shape size of a battery cell. Background Art

[0002] During the manufacturing process of cylindrical lithium batteries, the quality of the battery cell entering the shell directly affects the performance and yield of the battery cell after liquid injection. In order to improve the quality of entering the shell, the outer shape size of the battery cell is usually detected before entering the shell. At present, the detection method for the outer shape size of the battery cell before entering the shell is mostly to use a manipulator to move the battery cell from the self-supporting cup to the detection jig, and by observing whether the battery cell can smoothly enter the detection jig to judge whether the outer shape size of the battery cell meets the standard, so as to complete the detection of the outer shape size of the battery cell. However, during the detection process of the outer shape size of the battery cell, in order to avoid collision interference between the manipulator and the equipment at the detection position, the battery cell is usually released when the manipulator moves to a position with a certain distance from the detection position. After the battery cell breaks away from the manipulator, it is in an uncontrollable falling state. When the battery cell is skewed during the falling process, even if the outer shape size of the battery cell meets the standard, it cannot correctly enter the detection jig, resulting in inaccurate detection results, and the battery cell will collide with the detection jig, causing damage to the battery cell. Summary of the Invention

[0003] The present application aims to at least solve one of the technical problems existing in the prior art. For this reason, the present application provides a device and method for detecting the outer shape size of a battery cell, which can improve the accuracy of the detection result and the safety of the battery cell during the detection process.

[0004] According to an embodiment of the first aspect of the present application, a device for detecting the outer shape size of a battery cell includes:

[0005] A detection jig, the detection jig is provided with a detection hole, and the detection hole penetrates at least one side surface of the detection jig;

[0006] A guiding jig, the guiding jig is provided with a guiding hole penetrating therethrough, and the guiding hole communicates with the detection hole;

[0007] A jacking rod, the jacking rod is movably inserted through the guiding hole and the detection hole, and the jacking rod is used to drive the battery cell to pass through the guiding hole and move in a direction close to the detection hole;

[0008] A first driving mechanism, the first driving mechanism is connected to the jacking rod, and the first driving mechanism is used to drive the jacking rod to move.

[0009] The cell shape detection fixture according to the embodiments of the present application has at least the following beneficial effects: By providing a detection hole in the detection fixture and enabling the lifting rod to movably pass through the detection hole and the guiding hole of the guiding fixture, the lifting rod drives the cell to pass through the guiding hole and move towards the direction close to the detection hole, so that the cell is always supported by the lifting rod during the process of detecting the outer dimension, and the lifting rod can smoothly pass through the detection fixture and the guiding fixture, which is beneficial to ensuring the reliability of the equipment operation and effectively avoiding the situation that the manipulator clamping the cell collides and interferes with the detection equipment. Moreover, the cell enters the detection hole under the supporting action of the lifting rod, which can eliminate the uncontrollable falling section after the cell detaches from the manipulator. At the same time, the cell is guided and limited by the hole wall of the guiding hole, which is beneficial to keeping the cell in an upright state to pass through the guiding hole, so that the cell can move towards the detection hole in an upright state driven by the lifting rod, which is beneficial to improving the accuracy of the detection result and the safety of the cell during the detection process, and avoiding the situation that the detection result of the outer dimension of the cell is inaccurate and the cell collides and is damaged with the detection fixture due to the skew of the cell during the movement towards the detection hole.

[0010] According to some embodiments of the present application, the guiding fixture includes a first jaw, a second jaw and a second driving mechanism. A first groove is provided on a side of the first jaw close to the second jaw, and a second groove is provided on a side of the second jaw close to the first jaw. The second driving mechanism is used to drive the first jaw and the second jaw to move towards or away from each other. When the first jaw and the second jaw move to abut against each other, the first groove and the second groove enclose to form the guiding hole.

[0011] According to some embodiments of the present application, the second driving mechanism includes a lifting assembly, a movable plate, a fixed plate and two sliders. One of the sliders is connected to the first jaw, and the other slider is connected to the second jaw. The lifting assembly is connected to the movable plate. The movable plate is symmetrically provided with two first slide rails, and the first slide rails are inclined along the movement direction of the lifting assembly. The two sliders correspond to the two first slide rails one by one. The fixed plate is provided with a second slide rail, and the second slide rail extends along the direction from the first jaw to the second jaw. The slider is slidably connected to the first slide rail and the second slide rail. The movable plate is used to make a lifting movement under the drive of the lifting assembly to drive the two sliders to approach or move away from each other along the extending direction of the second slide rail.

[0012] According to some embodiments of the present application, the second driving mechanism further includes a first elastic member, and the lifting assembly is connected to the movable plate through the first elastic member.

[0013] According to some embodiments of the present application, the detection fixture includes a go - gauge body and a detection mechanism. The detection hole is provided in the go - gauge body, and the detection mechanism is used to detect whether the battery cell can move in the detection hole.

[0014] According to some embodiments of the present application, the detection mechanism includes a base, a second elastic member, a detection sensor, and an induction sheet. The first driving mechanism is connected to the base. One end of the second elastic member is connected to the base, and the other end of the second elastic member is connected to the lifting rod. The lifting rod is connected to the base through the second elastic member. One of the detection sensor and the induction sheet is provided on the base, and the other is provided on the lifting rod. The second elastic member is used to drive the lifting rod to move up and down under the drive of the base. When the battery cell lifted by the lifting rod is blocked from entering the detection hole and the resistance received by the lifting rod is greater than a preset resistance, the second elastic member undergoes tensile deformation, relative movement occurs between the base and the lifting rod, the detection sensor and the induction sheet are separated and an alarm signal is sent.

[0015] According to some embodiments of the present application, the go - gauge body includes an opposite first surface and a second surface. The detection hole penetrates the first surface and the second surface. The guiding fixture is located on one side of the go - gauge body and is close to the first surface. The battery cell outer dimension detection device further includes an auxiliary guide rod. The auxiliary guide rod is provided on the side of the go - gauge body away from the guiding fixture, and the auxiliary guide rod is used to limit the displacement of the battery cell when the battery cell extends out of the detection hole through the second surface.

[0016] According to some embodiments of the present application, the auxiliary guide rod is connected to the first driving mechanism, and the auxiliary guide rod extends into the detection hole through the second surface.

[0017] According to some embodiments of the present application, the first driving mechanism includes a turret, a first lifting cam, and a first cam follower. The first lifting cam is provided on the turret. The first lifting cam is provided with a first cam track surface. The first cam follower is roll - connected to the first cam track surface and is rotatably connected to the end of the lifting rod away from the detection fixture.

[0018] According to the battery cell outer dimension detection method of the second - aspect embodiments of the present application, the detection is performed using the battery cell outer dimension detection device as described in the first aspect above. The method includes:

[0019] Providing a guiding fixture and a detection fixture. The detection device is provided with a detection hole, and the guiding fixture is provided with a guiding hole penetrating therethrough. The guiding hole communicates with the detection hole;

[0020] The first driving mechanism drives the jacking rod to drive the battery cell to pass through the guiding hole and move in the direction close to the detection hole;

[0021] When the battery cell can pass through the detection hole, it is judged as qualified; when the battery cell cannot enter the detection hole or is stuck in the detection hole, it is judged as unqualified.

[0022] According to the method for detecting the external dimension of the battery cell in the embodiment of the present application, it has at least the following beneficial effects: it can improve the accuracy of the detection result and improve the safety of the battery cell during the detection process.

[0023] The additional aspects and advantages of the present application will be partly given in the following description, partly become obvious from the following description, or be understood through the practice of the present application. Description of the Drawings

[0024] The following further describes the present application in conjunction with the drawings and embodiments, where:

[0025] Figure 1 is a schematic structural diagram of the device for detecting the external dimension of the battery cell disclosed in the embodiment of the present application;

[0026] Figure 2 is a three-dimensional schematic diagram of the detection fixture, the guiding fixture and the jacking rod in the assembled state disclosed in the embodiment of the present application;

[0027] Figure 3 is a front view of the detection fixture, the guiding fixture and the jacking rod in the assembled state disclosed in the embodiment of the present application;

[0028] Figure 4 is a three-dimensional schematic diagram of the guiding fixture disclosed in the embodiment of the present application;

[0029] Figure 5 is a front view of the guiding fixture disclosed in the embodiment of the present application;

[0030] Figure 6 is a schematic structural diagram of the movable plate of the guiding fixture disclosed in the embodiment of the present application;

[0031] Figure 7 is a schematic structural diagram of the master gauge body of the detection fixture disclosed in the embodiment of the present application;

[0032] Figure 8 is a flowchart of the method for detecting the external dimension of the battery cell disclosed in the embodiment of the present application.

[0033] Reference Signs:

[0034] 1. Battery cell outer dimension detection device; 11. Detection fixture; 110. Detection hole; 111. GO gage body; 1110. Flared mouth; 112. Detection mechanism; 1121. Base; 1122. Second elastic member; 1123. Detection sensor; 1124. Induction sheet; 12. Guide fixture; 120. Guide hole; 121. First jaw; 122. Second jaw; 123. Second driving mechanism; 1231. Lifting assembly; 12311. Movable rod; 12312. Second cam follower; 1232. Movable plate; 12320. First slide rail; 1233. Fixed plate; 1234. Slide block; 1235. First elastic member; 13. Lifting rod; 14. First driving mechanism; 141. Turret; 142. First lifting cam; 143. First cam follower; 15. Auxiliary guide rod. Detailed implementation mode

[0035] The embodiments of the present application will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application and should not be construed as a limitation of the present application.

[0036] In the description of the present application, it should be understood that if terms such as "center", "middle", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present application.

[0037] In the description of the present application, the meaning of "several" is more than one, and the meaning of "multiple" is more than two. Understand that "greater than", "less than", "exceeding", etc. do not include the present number, and "above", "below", "within", etc. include the present number. If the first and second are described only for the purpose of distinguishing technical features, they should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence of the indicated technical features.

[0038] In the description of the present application, unless otherwise clearly defined and limited, the terms "arranged", "installed", "connected", and "coupled" shall 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0039] In the description of the present application, descriptions with reference terms such as "as an implementation manner", "an embodiment", "some examples", "some embodiments", "illustrative embodiments", "examples", "specific examples", "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0040] The quality of the battery cell entering the shell directly affects the performance and yield rate after the battery cell is injected with liquid. In order to improve the quality of the battery cell entering the shell and avoid the situation that the battery cell or the steel shell is damaged during the shell assembly due to dimensional errors or relative position errors between the battery cell and the steel shell, usually the outer dimensions of the battery cell are detected before entering the shell. In the related art, the battery cell is mostly moved from the self-supporting cup to above the detection jig by a manipulator, and the battery cell is released when there is a certain distance between the manipulator and the detection jig, so that the battery cell freely falls and moves in the direction close to the detection jig. When the outer dimension of the battery cell is smaller than the aperture of the detection hole of the detection jig, the battery cell can smoothly enter the detection hole of the detection jig. When the outer dimension of the battery cell is larger than the inner diameter of the detection hole, the battery cell cannot enter the detection hole of the detection jig, so as to judge whether the outer dimension of the battery cell meets the standard and complete the detection of the outer dimension of the battery cell. However, during the process of the battery cell falling from the manipulator to entering the detection jig, since the battery cell is in an uncontrollable falling state, the battery cell is prone to skew during the falling process, resulting in that even if the outer dimension of the battery cell meets the standard, it cannot enter the detection jig, resulting in inaccurate detection results of the outer dimension of the battery cell, and the battery cell will collide with the detection jig when it falls, causing damage to the battery cell.

[0041] Based on this, the present application provides a device and method for detecting the outer dimensions of a battery cell, which drives the battery cell to move towards the detection hole by a jacking rod and uses a guiding jig to guide the battery cell to enter the detection hole in an upright state, so as to solve the problems that the battery cell skews during the process of moving towards the detection jig in an uncontrollable falling state, resulting in inaccurate detection results and collision damage between the battery cell and the detection jig.

[0042] The technical solution of the present application will be further described below in conjunction with embodiments and drawings. It should be noted that the following description is only for illustrative purposes and not a specific limitation of the present application.

[0043] Please refer to Figures 1 to 4 , in the first aspect, an electric core shape and size detection device 1 provided by an embodiment of the present application includes: a detection jig 11, a guiding jig 12, a lifting rod 13, and a first driving mechanism 14. The detection jig 11 is provided with a detection hole 110, and the detection hole 110 penetrates at least one side surface of the detection jig 11. The guiding jig 12 is provided with a guiding hole 120 penetrating therethrough, and the guiding hole 120 communicates with the detection hole 110. The lifting rod 13 is movably disposed through the guiding hole 120 and the detection hole 110. The lifting rod 13 is used to drive the electric core to pass through the guiding hole 120 and move in a direction close to the detection hole 110. The first driving mechanism 14 is connected to the lifting rod 13, and the first driving mechanism 14 is used to drive the lifting rod 13 to move.

[0044] In the electric core shape detection device of the embodiment of the present application, by providing the detection hole 110 in the detection jig 11 and enabling the lifting rod 13 to be movably disposed through the detection hole 110 and the guiding hole 120 of the guiding jig 12, the lifting rod 13 drives the electric core to pass through the guiding hole 120 and move in a direction close to the detection hole 110, so that the electric core is always supported by the lifting rod 13 during the process of detecting the shape and size, and the lifting rod 13 can smoothly pass through the detection jig 11 and the guiding jig 12, which is beneficial to ensuring the reliability of the equipment operation and effectively avoiding the collision interference between the manipulator clamping the electric core and the detection device. Moreover, the electric core enters the detection hole 110 under the supporting action of the lifting rod 13, which can eliminate the uncontrollable falling section after the electric core detaches from the manipulator. At the same time, the hole wall of the guiding hole 120 guides and limits the electric core, which is beneficial to keeping the electric core in an upright state to pass through the guiding hole 120, so that the electric core can move towards the detection hole 110 in an upright state driven by the lifting rod 13, which is beneficial to improving the accuracy of the detection result and the safety of the electric core during the detection process, and avoiding the situation that the shape and size detection result of the electric core is inaccurate and the electric core collides and is damaged with the detection jig 11 due to the electric core being skewed during the movement towards the detection hole 110.

[0045] In addition, in the related art, when a manipulator is used to grip and move the battery cell, it is impossible to detect the outer shape and size of the battery cell during the process of the manipulator gripping the battery cell. As a result, the manipulator for moving the battery cell and the detection jig 11 must be separately arranged, which leads to a relatively large overall volume of the device and requires a large amount of space. However, with the battery cell outer shape detection device according to the embodiments of the present application, the battery cell enters the detection jig 11 for detection under the support of the lifting rod 13. The lifting rod 13 for moving the battery cell can move within the detection hole 110 of the detection jig 11, which is beneficial to improving the structural compactness of the lifting rod 13 and the detection jig 11 and reducing the volume of the battery cell outer shape detection device 1.

[0046] In some embodiments, the first driving mechanism 14 includes a turret 141, a first lifting cam 142, and a first cam follower 143. The first lifting cam 142 is disposed on the turret 141. The first lifting cam 142 is provided with a first cam track surface. The first cam follower 143 is in rolling connection with the first cam track surface, and the first cam follower 143 is rotatably connected to the end of the lifting rod 13 away from the detection jig 11.

[0047] In this way, the turret 141 drives the first lifting cam 142 to rotate, so that the first cam follower 143 moves up and down along the track of the first cam track surface, thereby driving the lifting rod 13 to perform a lifting motion, and driving the battery cell to move in a direction closer to or farther from the detection hole 110, so as to realize the detection of the outer shape and size of the battery cell.

[0048] Using the turret 141 and the first lifting cam 142 to drive the movement of the battery cell is more stable than the existing cylinder driving method, and the movement direction switching is more continuous and smooth, which is beneficial to improving the detection speed of the battery cell, realizing the efficient detection of the outer shape and size of the battery cell, adapting to the high-speed production rhythm, ensuring the production efficiency of the entire production line, and thus improving the manufacturing efficiency of the battery.

[0049] Optionally, the number of the detection jigs 11, the guiding jigs 12, the lifting rods 13, and the first cam followers 143 is multiple. The multiple detection jigs 11, the multiple guiding jigs 12, the multiple lifting rods 13, and the multiple first cam followers 143 correspond to each other one by one. The multiple first cam followers 143 are arranged at intervals and are respectively connected to the first lifting cam 142.

[0050] In this way, one turret 141 can drive the movement of multiple lifting rods 13 to simultaneously realize the detection of the outer shape and size of multiple battery cells, which can not only save energy and reduce energy consumption, but also improve work efficiency.

[0051] Please combine Figures 4 to 6, in some embodiments, the guiding fixture 12 includes a first jaw 121, a second jaw 122, and a second driving mechanism 123. A first groove is provided on a side of the first jaw 121 close to the second jaw 122, and a second groove is provided on a side of the second jaw 122 close to the first jaw 121. The second driving mechanism 123 is configured to drive the first jaw 121 and the second jaw 122 to move towards or away from each other. When the first jaw 121 and the second jaw 122 move to abut against each other, the first groove and the second groove enclose a guiding hole 120.

[0052] In this way, the second driving mechanism 123 drives the first jaw 121 and the second jaw 122 to move to open or close the guiding fixture 12. When the guiding fixture 12 is closed, the first groove and the second groove enclose the guiding hole 120. The core is guided to enter the detection hole 110 in an upright state through the guiding hole 120, which is beneficial to the detection of the outer dimensions of the core and makes the core safer and more reliable during the detection process. When the guiding fixture 12 is open, the movement of the core relative to the guiding fixture 12 is more flexible and free. The core can not only move up and down by being driven by the lifting rod 13 to leave or enter the guiding fixture 12, but also be transported to other workstations or transported from other workstations to enter the guiding fixture 12 by the supporting cup along with the rotation of the turret 141, which is beneficial to the loading and unloading of the core and shortens the transfer time of the core between different processes, thereby being beneficial to improving the manufacturing efficiency of the core.

[0053] Optionally, the second driving mechanism 123 includes a lifting assembly 1231, a movable plate 1232, a fixed plate 1233, and two sliders 1234. One of the sliders 1234 is connected to the first jaw 121, and the other slider 1234 is connected to the second jaw 122. The lifting assembly 1231 is connected to the movable plate 1232. Two first sliding rails 12320 are symmetrically arranged on the movable plate 1232, and the first sliding rails 12320 are inclined along the movement direction of the lifting assembly 1231. The two sliders 1234 correspond to the two first sliding rails 12320 one by one. The fixed plate 1233 is provided with a second sliding rail, and the second sliding rail extends along the direction from the first jaw 121 to the second jaw 122. The slider 1234 is slidably connected to the first sliding rail 12320 and the second sliding rail. The movable plate 1232 is configured to make a lifting movement under the drive of the lifting assembly 1231 to drive the two sliders 1234 to approach or move away from each other along the extending direction of the second sliding rail.

[0054] In this way, by driving the movable plate 1232 to move through one lifting assembly 1231, the movement of two components (the first jaw 121 and the second jaw 122) can be driven, so as to reduce the driving source and be beneficial to reducing energy consumption.

[0055] Optionally, the extending direction of the second slide rail is perpendicular to the moving direction of the lifting component 1231, that is, the first jaw 121 and the second jaw 122 are arranged in sequence along the direction perpendicular to the moving direction of the lifting component 1231. The lifting motion of the lifting component 1231 is converted into a horizontal movement by the second driving mechanism 123 to realize the opening and closing control of the guiding jig 12.

[0056] Optionally, the lifting component 1231 includes a movable rod 12311, a second lifting cam (not shown) and a second cam follower 12312. The second lifting cam is connected to the turret 141 of the first driving mechanism 14. The second lifting cam is provided with a second cam track surface. The second cam follower 12312 is rollingly connected to the second cam track surface. One end of the movable rod 12311 is directly or indirectly connected to the movable plate 1232. The second cam follower 12312 is rotatably connected to the other end of the movable rod 12311.

[0057] The turret 141 drives the second lifting cam to rotate, so that the second cam follower 12312 moves up and down along the track of the second cam track surface, so as to drive the movable rod 12311 to make a lifting motion, thereby driving the movable plate 1232 to lift. The slider 1234 has a tendency to lift under the drive of the first slide rail 12320, but is restricted by the second slide rail, so that the slider 1234 moves along the extending direction of the second slide rail in the first slide rail 12320 and the second slide rail, so as to drive the first jaw 121 and the second jaw 122 to approach or separate from each other, thereby realizing the opening and closing of the guiding jig 12. In this way, both the lifting of the battery cell and the opening and closing of the guiding jig 12 are driven by the rotation of the turret 141, which is beneficial to reducing the drive source, saving energy consumption and improving the integration degree of the battery cell external dimension detection device 1.

[0058] Optionally, the first cam follower 143 and the second cam follower 12312 can be bearings.

[0059] It can be understood that in some other embodiments, the first driving mechanism 14 and the lifting component 1231 can also be a linear motor or a cylinder, etc.

[0060] Optionally, the second driving mechanism 123 further includes a first elastic member 1235. The movable rod 12311 of the lifting component 1231 is connected to the movable plate 1232 through the first elastic member 1235, that is, one end of the movable rod 12311 far from the second cam follower 12312 is connected to the first elastic member 1235, and one end of the first elastic member 1235 far from the movable rod 12311 abuts against the movable plate 1232.

[0061] By setting the first elastic member 1235, a certain safety distance can be achieved when the movable rod 12311 drives the movable plate 1232 to move up and down, effectively avoiding the situation where the detection hole 110 of the guiding jig 12 fails to close due to incomplete movement. At the same time, the first elastic member 1235 can generate a reset tendency, so that after the detection is completed, the two sliders 1234 have a tendency to move away from each other, thereby facilitating the entry or exit of the battery cell into or out of the guiding jig 12 and facilitating the loading and unloading of the battery cell.

[0062] Please refer to Figure 4 and Figure 5 and refer to Figure 6 Taking the example that the two first slide rails 12320 on the movable plate 1232 are connected to form an inverted V-shaped structure, when the movable rod 12311 moves downward (i.e., in the direction away from the detection jig 11) driven by the second cam follower 12312, the first elastic member 1235 pulls the movable plate 1232 downward and drives the two sliders 1234 to approach each other, so as to drive the first jaw 121 and the second jaw 122 to approach each other. When the first jaw 121 and the second jaw 122 are in contact and enclose to form the guiding hole 120, the up and down movement of the movable plate 1232 is restricted. At this time, the movable rod 12311 continues to move downward to the lowest position of the second lifting cam. On the one hand, it can ensure that the first jaw 121 and the second jaw 122 are in close contact, so that the guiding jig 12 is in a closed state to ensure the guiding effect of the guiding hole 120 on the battery cell. On the other hand, when the movable rod 12311 continues to move downward, it will pull the first elastic member 1235 to undergo tensile deformation, so that the first elastic member 1235 generates an upward reset movement tendency, thereby making the two sliders 1234 have a tendency to move away from each other, so that the guiding jig 12 has an opening movement tendency. When the second lifting cam continues to rotate, the guiding jig 12 can be reset and opened under the drive of the first elastic member 1235, which is beneficial to ensuring that the guiding jig 12 remains open during the loading and unloading of the battery cell, so as to facilitate the carrier cup to carry the battery cell into or out of the guiding jig 12, thus facilitating the loading and unloading of the battery cell.

[0063] Please refer to again Figures 1 to 3 and in combination with Figure 7 In some embodiments, the detection jig 11 includes a go gauge body 111, the detection hole 110 is provided on the go gauge body 111, and a tapered guiding surface is provided on the inner wall of the detection hole 110 at one end close to the guiding jig 12, so that the detection hole 110 has a flared opening 1110.

[0064] In this way, by providing the flared opening 1110 at the entrance of the detection hole 110, the battery cell can be guided into the detection hole 110, which is beneficial to detecting the external dimensions of the battery cell and overcoming the problem of misjudging the external dimensions of the battery cell caused by the position deviation of the battery cell relative to the detection hole 110, resulting in the battery cell being unable to correctly enter the detection hole 110.

[0065] Optionally, the through gauge body 111 includes a first surface and a second surface opposite to each other, the detection hole 110 runs through the first surface and the second surface, the bell mouth 1110 is located on one side of the through gauge body 111 close to the first surface, and the guide fixture 12 is located on one side of the through gauge body 111 and close to the first surface. Thus, sufficient activity space can be reserved for the battery cell, so that the battery cell can completely enter the detection hole 110, so as to completely detect the external dimensions of each position of the battery cell and ensure the accuracy of the detection result.

[0066] Optionally, considering that the battery cell is lifted by the lifting rod 13 into the detection hole 110, when the lifting speed of the lifting rod 13 on the battery cell is too fast, the battery cell may fly out of the detection hole 110 from the second surface due to the inertial force. Based on this, the battery cell external dimension detection device 1 also includes an auxiliary guide rod 15, which is arranged on the side of the through gauge body 111 away from the guide fixture 12. The auxiliary guide rod 15 is used to limit the displacement of the battery cell when the battery cell extends out of the detection hole 110 through the second surface. In this way, the battery cell can be limited to avoid the battery cell flying out through the detection hole 110, resulting in the battery cell being unable to be unloaded normally, affecting the operation of the battery cell external dimension detection device 1.

[0067] Optionally, the auxiliary guide rod 15 is rotatably connected to the first cam follower 143 of the first driving mechanism 14, and the auxiliary guide rod 15 extends into the detection hole 110 through the second surface. In this way, the auxiliary guide rod 15 can be used to limit the displacement of the battery cell to prevent the battery cell from flying out of the detection hole 110, and the auxiliary guide rod 15 can be lifted and lowered with the rotation of the first lifting cam 142, so that when the battery cell is stuck in the detection hole 110, it can be pushed by the auxiliary guide rod 15 to break away from the detection hole 110, so as to realize the unloading of the battery cell, ensure that the detection fixture 11 can detect the next round of battery cells, thereby ensuring the operation reliability of the battery cell size detection device 1.

[0068] Optionally, one end of the auxiliary guide rod 15 extending into the detection hole 110 is provided with a buffer material, and the buffer material reduces the instantaneous impact force of the battery cell contacting the auxiliary guide rod 15 to achieve the effect of protecting the battery cell.

[0069] In some embodiments, the detection fixture 11 further includes a detection mechanism 112 , and the detection mechanism 112 is used to detect whether the battery cell can move in the detection hole 110 .

[0070] In this way, the detection mechanism 112 detects that the battery cell can move in the detection hole 110, so as to realize automatic judgment of the external dimensions of the battery cell, which is helpful to reduce manual intervention and eliminate the need for manual judgment of the detection structure, so as to improve the degree of automation.

[0071] In an alternative embodiment, the detection mechanism 112 includes a base 1121, a second elastic member 1122, a detection sensor 1123, and an induction sheet 1124. The first cam follower 143 of the first driving mechanism 14 is rotatably mounted on the base 1121. The auxiliary guide rod 15 is connected to the base 1121. One end of the second elastic member 1122 is connected to the base 1121, and the other end of the second elastic member 1122 is connected to the lifting rod 13. The lifting rod 13 is connected to the base 1121 through the second elastic member 1122. One of the detection sensor 1123 and the induction sheet 1124 is disposed on the base 1121, and the other is disposed on the lifting rod 13. The second elastic member 1122 is configured to drive the lifting rod 13 to move up and down under the drive of the base 1121. When the battery cell lifted by the lifting rod 13 is blocked from entering the detection hole 110 and the resistance received by the lifting rod 13 is greater than a preset resistance, the second elastic member 1122 undergoes a tensile deformation, and relative movement occurs between the base 1121 and the lifting rod 13. The detection sensor 1123 and the induction sheet 1124 are separated and an alarm signal is issued.

[0072] In this way, when the turret 141 drives the first lifting cam 142 to rotate, the first cam follower 143 moves up and down along with the first cam track surface to drive the base 1121 to move up and down. The base 1121 drives the lifting rod 13 to move in a direction close to or away from the detection device through the second elastic member 1122. When the outer dimension of the battery cell lifted by the lifting rod 13 is smaller than the dimension of the detection hole 110, the battery cell can enter and leave the detection hole 110 as the turret 141 rotates. When the outer dimension of the battery cell lifted by the lifting rod 13 is greater than or equal to the dimension of the detection hole 110, the battery cell cannot freely pass through the detection hole 110, and the lifting of the lifting rod 13 is blocked. The lifting rod 13 receives a resistance from the detection jig 11. When the resistance received by the lifting rod 13 is greater than the preset resistance (i.e., the pulling force of the base 1121 on the lifting rod 13 minus the sum of the gravity of the lifting rod 13 and the battery cell), the resistance received by the lifting rod 13 is greater than the pulling force. At this time, the lifting rod 13 remains stationary, and the base 1121 moves relative to the lifting rod 13 in a direction close to the detection jig 11 under the drive of the turret 141 and the second lifting cam, and the second elastic member 1122 undergoes a tensile deformation, so that the detection sensor 1123 and the induction sheet 1124 are separated, thereby triggering an alarm signal to warn that the outer dimension of the battery cell is unqualified. The detection sensor 1123 adopts a contact induction method, which can improve the detection accuracy and the accuracy of detecting the outer dimension of the battery cell.

[0073] It can be understood that in other embodiments, the detection sensor 1123 may emit an alarm signal when contacting the induction sheet 1124. Alternatively, in other embodiments, the detection sensor 1123 may determine whether relative movement occurs between the base 1121 and the lifting rod 13 by means of a Hall sensor, a photoelectric sensor, visual detection, or ultrasonic detection.

[0074] Optionally, the elastic member can be any one of a constant force spring, a tension spring, an elastic cord, etc., and can be specifically set according to actual requirements, and is not limited here.

[0075] In another alternative embodiment, the detection mechanism 112 can also be a sensor provided at the upper end of the detection hole 110, such as a photoelectric sensor or an infrared sensor, etc., to determine whether the battery cell passes through the current position by induction, so as to judge whether the battery cell can move in the detection hole 110.

[0076] Please combine Figures 1 to 6 with Figure 8 and refer to

[0077] S100. Provide a guiding jig 12 and a detection jig 11. The detection device is provided with a detection hole 110, and the guiding jig 12 is provided with a guiding hole 120 therethrough, and the guiding hole 120 communicates with the detection hole 110.

[0078] S200. The first driving mechanism 14 drives the lifting rod 13 to drive the battery cell to pass through the guiding hole 120 and move in the direction close to the detection hole 110.

[0079] S300. When the battery cell can pass through the detection hole 110, it is judged as qualified; when the battery cell cannot enter the detection hole 110 or is stuck in the detection hole 110, it is judged as unqualified.

[0080] In this way, the battery cell enters the detection hole 110 under the support of the lifting rod 13, which can eliminate the uncontrollable falling section after the battery cell is separated from the clamping of the manipulator. At the same time, the battery cell is guided and limited by the hole wall of the guiding hole 120, which is beneficial to keep the battery cell upright through the guiding hole 120, so that the battery cell can move towards the detection hole 110 in an upright state driven by the lifting rod 13, which is beneficial to improve the accuracy of the detection result and the safety of the battery cell during the detection process, and avoid the situation that the detection result of the external dimension of the battery cell is inaccurate and the battery cell collides and damages with the detection jig 11 due to the battery cell being skewed during the movement towards the detection hole 110.

[0081] It can be understood that since the battery cell external dimension detection method includes the battery cell external dimension detection device 1 described in the first aspect above, therefore, the battery cell external dimension detection method has the beneficial effects of the battery cell external dimension detection device 1 described in the first aspect above, which will not be elaborated here.

[0082] The embodiments of the present application have been described in detail above with reference to the accompanying drawings. However, the present application is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present application within the scope of knowledge possessed by those of ordinary skill in the art. In addition, the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

Claims

1. A cell external dimension detection device, characterized in that Including: A detection jig, the detection jig is provided with a detection hole, and the detection hole penetrates at least one side surface of the detection jig; A guiding jig, the guiding jig is provided with a guiding hole through it, and the guiding hole communicates with the detection hole; A lifting rod, the lifting rod is movably disposed through the guiding hole and the detection hole, and the lifting rod is used to drive the battery cell to pass through the guiding hole and move in a direction close to the detection hole; A first driving mechanism, the first driving mechanism is connected to the lifting rod, and the first driving mechanism is used to drive the lifting rod to move.

2. The cell external dimension detection device according to claim 1, characterized in that, The guiding jig includes a first clamping jaw, a second clamping jaw and a second driving mechanism. A first groove is provided on one side of the first clamping jaw close to the second clamping jaw, and a second groove is provided on one side of the second clamping jaw close to the first clamping jaw. The second driving mechanism is used to drive the first clamping jaw and the second clamping jaw to move in a direction close to or away from each other. When the first clamping jaw and the second clamping jaw move to abut against each other, the first groove and the second groove enclose to form the guiding hole.

3. The cell external dimension detection device according to claim 2, characterized in that The second driving mechanism includes a lifting assembly, a movable plate, a fixed plate and two sliders. One of the sliders is connected to the first clamping jaw, and the other slider is connected to the second clamping jaw. The lifting assembly is connected to the movable plate. The movable plate is symmetrically provided with two first slide rails, and the first slide rails are inclined along the movement direction of the lifting assembly. The two sliders correspond to the two first slide rails one by one. The fixed plate is provided with a second slide rail, and the second slide rail extends along the direction from the first clamping jaw to the second clamping jaw. The slider is slidably connected to the first slide rail and the second slide rail. The movable plate is used to make a lifting movement under the drive of the lifting assembly to drive the two sliders to approach or move away from each other along the extending direction of the second slide rail.

4. The cell external dimension detection device according to claim 3, characterized in that The second driving mechanism further includes a first elastic member, and the lifting assembly is connected to the movable plate through the first elastic member.

5. The cell external dimension detection device according to claim 1, characterized in that, The detection jig includes a go gauge body and a detection mechanism. The detection hole is provided on the go gauge body, and the detection mechanism is used to detect whether the battery cell can move in the detection hole.

6. The cell outer dimension detection device according to claim 5, characterized in that, The detection mechanism includes a base, a second elastic member, a detection sensor and an induction sheet. The first driving mechanism is connected to the base. One end of the second elastic member is connected to the base, and the other end of the second elastic member is connected to the lifting rod. The lifting rod is connected to the base through the second elastic member. One of the detection sensor and the induction sheet is disposed on the base, and the other is disposed on the lifting rod. The second elastic member is used to drive the lifting rod to make a lifting movement under the drive of the base. When the battery cell lifted by the lifting rod is blocked from entering the detection hole and the resistance received by the lifting rod is greater than a preset resistance, the second elastic member undergoes a tensile deformation, and the base and the lifting rod move relatively, and the detection sensor and the induction sheet are separated and an alarm signal is sent out.

7. The battery cell outer dimension detection device according to claim 6, wherein, The go - gauge body includes opposite first and second faces, the inspection hole penetrates through the first face and the second face, the guiding fixture is located on one side of the go - gauge body and is arranged close to the first face, the cell outer dimension detection device further includes an auxiliary guide rod, the auxiliary guide rod is arranged on the side of the go - gauge body away from the guiding fixture, and the auxiliary guide rod is used to limit the displacement of the cell when the cell extends out of the inspection hole through the second face.

8. The cell external dimension detection device according to claim 7, characterized in that, The auxiliary guide rod is connected to the first driving mechanism, and the auxiliary guide rod extends into the inspection hole through the second face.

9. The cell external dimension detection device according to any one of claims 1-8, characterized in that, The first driving mechanism includes a turret, a first lifting cam and a first cam follower. The first lifting cam is arranged on the turret, the first lifting cam is provided with a first cam track surface, the first cam follower is in rolling connection with the first cam track surface, and the first cam follower is rotatably connected to the end of the lifting rod away from the inspection fixture.

10. A method for detecting the external dimension of an electric core, characterized in that, Using the cell outer dimension detection device according to any one of claims 1 - 9 for detection, the method includes: Providing a guiding fixture and an inspection fixture, the detection device is provided with an inspection hole, the guiding fixture is provided with a guiding hole penetrating therethrough, and the guiding hole communicates with the inspection hole; The first driving mechanism drives the lifting rod to drive the cell to pass through the guiding hole and move in a direction close to the inspection hole; When the cell can pass through the inspection hole, it is judged as qualified, and when the cell cannot enter the inspection hole or is stuck in the inspection hole, it is judged as unqualified.

Images