Battery cell steel shell detection clamp and working method thereof

Abstract

The invention discloses a battery cell steel shell detection clamp and a working method thereof. The detection clamp comprises a mounting bottom plate; the centering clamping assembly comprises a supporting frame and a clamping jaw which are connected with each other, and the supporting frame is provided with a first limiting block; the checking fixture jacking assembly comprises a checking fixture, a jacking seat and a driving seat, and the driving seat can horizontally move to drive the jacking seat to vertically move; the driving seat is provided with a second limiting block; the cam plate is provided with a cam groove, and the first limiting block and the second limiting block slide in the cam groove. According to the invention, the cam plate is utilized to uniformly control the clamping of the centering clamping assembly and the jacking of the checking fixture by the checking fixture jacking assembly, so that the two processes are integrated in the same equipment, errors caused by clamping and fixing of different equipment are avoided, and the two clamping jaws adopt a centering clamping mode, so that the dimension detection precision of the steel shell is higher. The cam plate is used for driving, the equipment structure can be simplified, the detection efficiency is improved, and the device is suitable for large-batch detection working scenes.

Description

Technical Field

[0001] The present invention relates to the technical field of battery detection, and in particular to a battery core steel shell detection fixture and a working method thereof. Background Art

[0002] In the structure of lithium batteries, the steel shell is an indispensable and important component of lithium batteries. The finished steel shell needs to be inspected before the battery cell is put into the shell to ensure that the size of the steel shell meets the assembly accuracy requirements. At present, in the lithium battery production line, special machines and equipment are generally used to automatically inspect the steel shell. The automated inspection equipment first clamps and fixes the steel shell, and then the inspection fixture used to detect the inner diameter of the steel shell is lifted and inserted into the steel shell; after the inspection is completed, the inspection fixture is lowered, the clamping mechanism releases the steel shell, and the steel shell is removed from it and enters the subsequent assembly process.

[0003] In the existing design, the steel shell clamping and positioning and the inspection fixture lifting are usually two separate independent structures, driven by two cylinders or motors respectively. The positioning accuracy is difficult to ensure, which is prone to misjudgment and there is a risk of friction scratching the steel shell. Moreover, in the current clamping and positioning device, only one of the two jaws is active, and the other fixed jaw is used to achieve unilateral positioning. The positioning accuracy of unilateral positioning is low. For this reason, manual adjustment is usually required to eliminate the positioning error, which is not conducive to continuous production, and the detection efficiency cannot meet the requirements of mass production. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a battery core steel shell detection fixture, which can improve the detection accuracy and detection efficiency of lithium battery steel shells to meet mass production requirements.

[0005] The present invention also provides a working method for the above-mentioned battery cell steel shell detection fixture, which can complete the detection of multiple lithium battery steel shells in an assembly line manner.

[0006] A battery core steel shell detection fixture according to an embodiment of the first aspect of the present invention includes:

[0007] Install the base plate;

[0008] There are two centering clamping assemblies, which are symmetrically arranged. The centering clamping assemblies include a supporting frame and clamping claws connected to each other, and a first limiting block is arranged at the bottom of the supporting frame;

[0009] A gauge lifting assembly, comprising a gauge, a lifting seat and a driving seat, wherein the gauge is arranged on the top of the lifting seat, and the driving seat can drive the lifting seat to move vertically by horizontal movement; a second limit block is arranged at the bottom of the driving seat;

[0010] A cam plate, which is rotatably connected to the mounting base plate, the cam plate is provided with a cam groove, the cam groove encloses a symmetrical closed figure, and the first limit block and the second limit block both slide in the cam groove;

[0011] When the cam plate rotates, the clamping claws in the two centering clamping assemblies are firstly driven to clamp the steel shell, and then the lifting seat is driven to lift the inspection tool into the interior of the steel shell.

[0012] The battery steel shell inspection fixture according to the embodiment of the present invention has at least the following beneficial effects: the cam plate is used to uniformly control the clamping of the centering clamping assembly and the lifting of the inspection fixture by the inspection fixture lifting assembly, so that the two processes are integrated into the same device, avoiding errors when different devices are clamped and fixed, and the two clamping jaws adopt a centering clamping method, so that the size detection accuracy of the steel shell is higher. In addition, the use of a cam plate drive can simplify the equipment structure and improve the detection efficiency, which is suitable for large-scale detection work scenarios.

[0013] According to some embodiments of the present invention, the centering clamping assembly further includes a first slide rail mechanism, the first slide rail mechanism is mounted on the mounting base plate, and the support frame is slidably connected to the mounting base plate via the first slide rail mechanism.

[0014] According to some embodiments of the present invention, the centering clamping assembly further includes a locking mechanism, the clamping jaw is slidably connected to the support frame, the clamping jaw slides in a horizontal direction to adjust the extension distance of the clamping jaw, and the locking mechanism locks the position of the clamping jaw.

[0015] According to some embodiments of the present invention, the locking mechanism includes a top screw, the support frame is provided with a threaded hole, the top screw is threadedly connected to the threaded hole, and an end of the top screw extends out of the threaded hole and abuts against an end of the clamping jaw.

[0016] According to some embodiments of the present invention, the gauge lifting assembly further includes a second slide rail mechanism, the second slide rail mechanism is mounted on the mounting base plate, and the lifting seat is slidably connected to the mounting base plate via the second slide rail mechanism.

[0017] According to some embodiments of the present invention, an oblique guide groove is provided on the side of the lifting seat, and a guide block capable of sliding in the guide groove extends outward from the driving seat, and the horizontal movement of the driving seat can drive the lifting seat to move vertically through the guide block.

[0018] According to some embodiments of the present invention, the battery core steel shell detection fixture further includes a motor, which is connected to the mounting base plate and drives the cam plate to rotate.

[0019] According to some embodiments of the present invention, the battery cell steel shell inspection fixture also includes a defective detection component, which includes a buffer guide rod and a sensor connected to each other, and the buffer guide rod and the inspection fixture are respectively arranged at both ends of the steel shell; when the steel shell is lifted by the inspection fixture due to size error, the steel shell can contact the buffer guide rod and trigger the sensor.

[0020] According to some embodiments of the present invention, the first limit block and the second limit block are both installed with bearings, and the first limit block and the second limit block are both in rolling contact with the inner wall of the cam groove through the bearings.

[0021] According to the working method of the second aspect of the present invention, which is based on the above-mentioned battery core steel shell detection fixture, it includes the following steps:

[0022] Use a manipulator or other loading equipment to place the steel shell to be tested into the battery core steel shell testing fixture;

[0023] The cam plate rotates, and the first limit block moves in the cam groove, driving the two centering clamping assemblies to approach each other, so that the two clamping claws clamp and fix the steel shell;

[0024] The cam plate continues to rotate, and the second limit block moves in the cam groove, driving the driving seat to move horizontally, thereby driving the lifting seat to extend the inspection tool into the steel shell;

[0025] After the detection is completed, the cam plate continues to rotate, and the second limit block moves in the cam groove, driving the driving seat to move horizontally, driving the lifting seat to descend to extract the inspection tool from the steel shell;

[0026] The cam plate continues to rotate, and the first limit block moves in the cam groove, driving the two centering clamping assemblies away from each other, and the steel shell is released from the two clamping jaws;

[0027] Using a manipulator or other unloading equipment, the steel shell that has been tested is taken out from the battery core steel shell testing fixture;

[0028] The above steps are repeated in a cycle to complete the detection of the plurality of steel shells.

[0029] The working method according to the embodiment of the present invention has at least the following beneficial effects: it can improve the detection rhythm of the steel shell and accelerate the detection speed.

[0030] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0032] Figure 1 This is a front view of a battery core steel shell detection fixture according to an embodiment of the present invention;

[0033] Figure 2 It is a side view of a battery core steel shell detection fixture according to an embodiment of the present invention;

[0034] Figure 3 The figure is a top view of a battery core steel shell detection fixture according to an embodiment of the present invention.

[0035] Figure numerals: 100-installation base plate, 200-centering clamping assembly, 210-support frame, 211-first limit block, 220-clamping claw, 230-first slide rail mechanism, 240-locking mechanism, 300-gauge lifting assembly, 310-gauge, 320-lifting seat, 321-guide groove, 330-driving seat, 331-second limit block, 332-guide block, 340-second slide rail mechanism, 400-cam plate, 410-cam groove, 500-motor, 600-defective detection assembly, 610-buffer guide rod, 620-sensor, 700-steel shell. DETAILED DESCRIPTION

[0036] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0037] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0038] In the description of the present invention, "several" means more than one, "many" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0039] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0040] In the description of the present invention, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0041] In the existing design, the steel shell clamping positioning and the inspection fixture lifting are usually two separate independent structures, driven by two cylinders or motors respectively. The positioning accuracy is difficult to ensure, which is prone to misjudgment and there is a risk of friction scratching the steel shell. Therefore, manual adjustment is usually required to eliminate the positioning error, which is not conducive to continuous production, and the inspection efficiency cannot meet the requirements of mass production.

[0042] In this regard, the present application proposes a battery cell steel shell inspection fixture, which uses a cam plate 400 to uniformly control the clamping of the centering clamping assembly 200 and the lifting of the inspection fixture 310 by the inspection fixture lifting assembly 300, so that the two processes are integrated into the same device, avoiding errors when different devices are clamped and fixed, and the two clamping jaws 220 adopt a centering clamping method, so that the size detection accuracy of the steel shell 700 is higher. Moreover, the use of a cam plate 400 to drive can simplify the equipment structure and improve the detection efficiency, which is suitable for large-scale detection work scenarios. Moreover, the present application also proposes a working method for the above-mentioned battery cell steel shell inspection fixture, which can improve the detection rhythm of the steel shell 700 and speed up the detection speed.

[0043] Reference Figure 1 The battery cell steel shell detection fixture in the embodiment of the present application includes a mounting base plate 100, a centering clamping assembly 200, a gauge lifting assembly 300 and a cam plate 400. Among them, the mounting base plate 100 is the main structure of the battery cell steel shell detection fixture, which is used to provide support for other components. The centering clamping assembly 200 is used to clamp and fix the steel shell 700 to be inspected, and the gauge lifting assembly 300 is used to lift the gauge 310 to detect the internal dimensions of the steel shell 700. The cam plate 400 is used to control the centering clamping assembly 200 to clamp or release the steel shell 700, and to control the gauge lifting assembly 300 to lift the gauge 310.

[0044] Specifically, there are two centering clamping assemblies 200 which are symmetrically arranged, and include a supporting frame 210 and a clamping jaw 220 which are connected to each other. A first limiting block 211 is arranged at the bottom of the supporting frame 210 to be linked with the cam plate 400 .

[0045] Reference Figure 2 The gauge lifting assembly 300 includes a gauge 310, a lifting seat 320 and a driving seat 330. The gauge 310 is arranged on the top of the lifting seat 320, and the driving seat 330 moves horizontally to drive the lifting seat 320 to move vertically, thereby completing the lifting and lowering of the gauge 310. A second limit block 331 is arranged at the bottom of the driving seat 330 to be linked with the cam plate 400.

[0046] The cam plate 400 is rotatably connected to the mounting base plate 100 and has a cam groove 410 formed thereon. Figure 3 The cam groove 410 forms a symmetrical closed figure, and the first limit block 211 and the second limit block 331 both slide in the cam groove 410. Therefore, when the cam plate 400 rotates, it can drive the centering clamping assembly 200 to move closer to each other to complete the centering clamping of the steel shell 700, and drive the gauge lifting assembly 300 to lift the gauge 310.

[0047] It is worth noting that when the cam plate 400 rotates, the clamping jaws 220 in the two centering clamping assemblies 200 are firstly driven to clamp the steel shell 700 , and then the lifting seat 320 is driven to lift the inspection fixture 310 into the steel shell 700 .

[0048] Furthermore, the centering clamping assembly 200 further includes a first slide rail mechanism 230, which is mounted on the mounting base plate 100, and the support frame 210 is slidably connected to the mounting base plate 100 via the first slide rail mechanism 230. The first slide rail mechanism 230 is used to limit the moving direction of the support frame 210 and reduce the friction resistance of the support frame 210.

[0049] Furthermore, the centering clamping assembly 200 further includes a locking mechanism 240, the jaw 220 is slidably connected to the support frame 210, and the jaw 220 can slide in the horizontal direction to adjust the extension distance of the jaw 220, thereby adjusting the clamping force of the jaw 220 on the steel shell 700 when clamping. The locking mechanism 240 is used to lock the position of the jaw 220 to prevent the jaw 220 from being displaced during clamping. Specifically, the locking mechanism 240 includes a top screw, and the support frame 210 is provided with a threaded hole. The top screw is threadedly connected to the threaded hole, and the end of the top screw extends from the threaded hole and abuts against the end of the jaw 220. Therefore, when the top screw is screwed, the end of the top screw approaches the jaw 220 and drives the jaw 220 to move, completing the fine adjustment of the position of the jaw 220. At the same time, the cooperation between the top screw and the threaded hole has a self-locking function, and it is not easy to loosen when the jaw 220 is subjected to force.

[0050] Furthermore, the end of the clamping jaw 220 is provided with an arc structure to better fit the outer surface of the steel shell 700. An elastic cushion layer can be provided on the inner wall of the arc structure to reduce the scratching of the outer surface of the steel shell 700 by the clamping jaw 220.

[0051] Furthermore, the gauge lifting assembly 300 further includes a second slide rail mechanism 340, which is mounted on the mounting base 100, and the lifting seat 320 is slidably connected to the mounting base 100 via the second slide rail mechanism 340. The second slide rail mechanism 340 is used to limit the moving direction of the lifting seat 320 and reduce the friction resistance of the lifting seat 320.

[0052] Regarding the driving mode in which the driving seat 330 drives the lifting seat 320 to lift, in some embodiments, a connecting rod is provided between the two, and the two ends of the connecting rod are respectively hinged to the lifting seat 320 and the driving seat 330. When the driving seat 330 moves horizontally, the connecting rod converts the horizontal force component into a vertical force component, thereby driving the lifting seat 320 to move in the vertical direction.

[0053] In this embodiment, the side of the lifting seat 320 is provided with an oblique guide groove 321, and the driving seat 330 extends outward with a guide block 332 that can slide in the guide groove 321. When the driving seat 330 moves horizontally, the guide block 332 can drive the lifting seat 320 to move vertically.

[0054] Furthermore, the battery core steel shell detection fixture further includes a motor 500, which is connected to the mounting base plate 100 and drives the cam plate 400 to rotate. The output shaft of the motor 500 can be directly connected to the cam plate 400, or drive the cam plate 400 to rotate through a reduction mechanism.

[0055] Furthermore, the battery cell steel shell detection fixture further includes a defective detection assembly 600, which includes a buffer guide rod 610 and a sensor 620 connected to each other. The buffer guide rod 610 and the inspection fixture 310 are respectively arranged at both ends of the steel shell 700. When the steel shell 700 is lifted by the inspection fixture 310 due to a size error, the steel shell 700 can contact the buffer guide rod 610 and trigger the sensor 620, sounding an alarm to indicate the presence of defective products, and entering the subsequent defective product recovery process.

[0056] Furthermore, the first limit block 211 and the second limit block 331 are both installed with bearings, and the first limit block 211 and the second limit block 331 are in rolling contact with the inner wall of the cam groove 410 through the bearings to reduce friction resistance.

[0057] A working method in an embodiment of the present application is performed on the above-mentioned battery core steel shell detection fixture, comprising the following steps:

[0058] S100. Use a manipulator or other feeding equipment to place the steel shell 700 to be tested into the battery steel shell testing fixture;

[0059] S200. The cam plate 400 rotates, and the first stopper 211 moves in the cam groove 410, driving the two centering clamping assemblies 200 to approach each other, so that the two clamping jaws 220 clamp and fix the steel shell 700;

[0060] S300. The cam plate 400 continues to rotate, and the second limit block 331 moves in the cam groove 410, driving the driving seat 330 to move horizontally, thereby driving the lifting seat 320 to extend the inspection fixture 310 into the steel shell 700;

[0061] S400. After the inspection is completed, the cam plate 400 continues to rotate, and the second limit block 331 moves in the cam groove 410, driving the drive seat 330 to move horizontally, driving the lifting seat 320 to descend to extract the inspection fixture 310 from the steel shell 700;

[0062] S500. The cam plate 400 continues to rotate, and the first stopper 211 moves in the cam groove 410, driving the two centering clamping assemblies 200 away from each other, and the steel shell 700 is released from the two clamping jaws 220;

[0063] S600. Use a manipulator or other unloading equipment to remove the inspected steel shell 700 from the battery steel shell inspection fixture;

[0064] S700. The above steps are repeated repeatedly to complete the detection of multiple steel shells 700.

[0065] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the purpose of the present invention. In addition, the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

Claims

1. A battery core steel shell detection fixture, characterized in that: include: Install the base plate; There are two centering clamping assemblies, which are symmetrically arranged. The centering clamping assemblies include a supporting frame and clamping claws connected to each other, and a first limiting block is arranged at the bottom of the supporting frame; A gauge lifting assembly, comprising a gauge, a lifting seat and a driving seat, wherein the gauge is arranged on the top of the lifting seat, and the driving seat can drive the lifting seat to move vertically by horizontal movement; a second limit block is arranged at the bottom of the driving seat; A cam plate, which is rotatably connected to the mounting base plate, the cam plate is provided with a cam groove, the cam groove encloses a symmetrical closed figure, and the first limit block and the second limit block both slide in the cam groove; When the cam plate rotates, the clamping claws in the two centering clamping assemblies are firstly driven to clamp the steel shell, and then the lifting seat is driven to lift the inspection tool into the interior of the steel shell.

2. The battery core steel shell detection fixture according to claim 1 is characterized in that: The centering clamping assembly also includes a first slide rail mechanism, which is installed on the installation base plate, and the support frame is slidably connected to the installation base plate through the first slide rail mechanism.

3. The battery core steel shell detection fixture according to claim 1, characterized in that: The centering clamping assembly also includes a locking mechanism. The clamping jaw is slidably connected to the support frame. The clamping jaw slides in a horizontal direction to adjust the extension distance of the clamping jaw. The locking mechanism locks the position of the clamping jaw.

4. The battery core steel shell detection fixture according to claim 3 is characterized in that: The locking mechanism comprises a top screw, the support frame is provided with a threaded hole, the top screw is threadedly connected to the threaded hole, and an end of the top screw extends out of the threaded hole and abuts against an end of the clamping jaw.

5. The battery core steel shell detection fixture according to claim 1, characterized in that: The inspection tool lifting assembly further includes a second slide rail mechanism, which is mounted on the mounting base plate, and the lifting seat is slidably connected to the mounting base plate via the second slide rail mechanism.

6. The battery core steel shell detection fixture according to claim 1, characterized in that: The side surface of the lifting seat is provided with an obliquely arranged guide groove, and the driving seat extends outwardly with a guide block that can slide in the guide groove. The horizontal movement of the driving seat can drive the lifting seat to move vertically through the guide block.

7. The battery core steel shell detection fixture according to claim 1, characterized in that: The battery core steel shell detection fixture also includes a motor, which is connected to the mounting base plate and drives the cam plate to rotate.

8. The battery core steel shell detection fixture according to claim 1, characterized in that: The battery core steel shell detection fixture also includes a defective detection component, which includes a buffer guide rod and a sensor connected to each other, and the buffer guide rod and the inspection tool are respectively arranged at both ends of the steel shell; when the steel shell is lifted by the inspection tool due to size error, the steel shell can contact the buffer guide rod and trigger the sensor.

9. The battery core steel shell detection fixture according to any one of claims 1 to 8, characterized in that: The first limiting block and the second limiting block are both installed with bearings, and the first limiting block and the second limiting block are both in rolling contact with the inner wall of the cam groove through the bearings.

10. A working method for the battery core steel shell detection fixture according to any one of claims 1 to 9, characterized in that: include: Use a manipulator or other loading equipment to place the steel shell to be tested into the battery core steel shell testing fixture; The cam plate rotates, and the first limit block moves in the cam groove, driving the two centering clamping assemblies to approach each other, so that the two clamping claws clamp and fix the steel shell; The cam plate continues to rotate, and the second limit block moves in the cam groove, driving the driving seat to move horizontally, thereby driving the lifting seat to extend the inspection tool into the steel shell; After the detection is completed, the cam plate continues to rotate, and the second limit block moves in the cam groove, driving the driving seat to move horizontally, driving the lifting seat to descend to extract the inspection tool from the steel shell; The cam plate continues to rotate, and the first limit block moves in the cam groove, driving the two centering clamping assemblies away from each other, and the steel shell is released from the two clamping jaws; Using a manipulator or other unloading equipment, the steel shell that has been tested is taken out from the battery core steel shell testing fixture; The above steps are repeated in a cycle to complete the detection of the plurality of steel shells.

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