High-precision size detection device for battery cell shell

Abstract

The utility model provides a high-precision size detection device for a battery cell shell, which relates to the technical field of battery cell shell detection and comprises a detection support, a limiting driving part, a first detection clamping plate, a detection horizontal driving assembly, a second detection clamping plate, a displacement sensor and a shell containing seat. The shell containing seat is used for containing a battery cell shell, the first detection clamping plate is fixedly connected to the limiting driving part, and the limiting driving part is used for ejecting the first detection clamping plate to a limiting position to achieve a hard limiting effect; the second detection clamping plate is connected with the other transverse side of the detection support in a transverse horizontal movement mode through the detection horizontal driving assembly. The displacement sensor is arranged on the detection support, and during size detection, the accurate size of the battery cell shell is detected through the difference value between the initial distance between the first detection clamping plate and the second detection clamping plate and the displacement after the first detection clamping plate moves. The utility model has the advantages that the detection stability and accuracy are further improved, and the product quality is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery core shell detection, and in particular to a high-precision size detection device for a battery core shell. Background Art

[0002] like Figure 4 The figure shows a conventionally produced battery cell casing 8. The casing 8 is formed by bending an aluminum sheet in half upward to form a hollow rectangular parallelepiped. After bending, the two sides of the sheet are welded together. During the production process, the finished battery cell casing 8 must be inspected for length (left-right) dimensions. Currently, this inspection is performed manually using a ruler to measure the length of each individual cell casing 8. This results in low overall accuracy and consistency, impacting the overall quality of the battery cell casing 8. Utility Model Content

[0003] The technical problem to be solved by the present invention is that the existing dimensional detection accuracy and consistency are low, which affects the production quality of the entire battery cell shell. In order to overcome the above defects of the existing technology, the present invention provides a first detection clamping plate and a second detection clamping plate, which are combined with a displacement sensor to ensure that the length direction of the battery cell shell can be detected, thereby improving the detection stability and accuracy, and further improving the production quality of the entire battery cell shell.

[0004] For the purpose of this utility model, the following technical solutions are adopted:

[0005] A high-precision size detection device for a battery cell shell, comprising a detection bracket, a limit drive, a first detection clamp, a detection horizontal drive assembly, a second detection clamp, a displacement sensor and a shell holding seat; the shell holding seat is used to place the battery cell shell horizontally, and both lateral ends of the battery cell shell are exposed outside the shell holding seat; the second detection clamp and the first detection clamp are respectively located on the lateral sides of the shell holding seat; the first detection clamp is fixedly connected to the limit drive, and the limit drive is used to push the first detection clamp out horizontally to the limit position to achieve a hard limit effect; the second detection clamp is connected to the detection bracket by horizontal movement through the detection horizontal drive assembly, and the first detection clamp and the second detection clamp are relative to each other to clamp the battery cell shell or move oppositely to loosen the battery cell shell; the displacement sensor is arranged on the detection bracket and is used to detect the displacement of the first detection clamp; during size detection, the precise size of the battery cell shell is detected by the difference L3 between the initial distance L1 between the first detection clamp and the second detection clamp and the displacement L2 after the first detection clamp is moved. The first detection clamp is driven to move by the limit driving component to adapt to battery cell shells of different sizes, and the first detection clamp is pushed out by the limit driving component to act as a hard limit, thereby ensuring that the position of the first detection clamp remains unchanged. The second detection clamp is driven to approach the first detection clamp and clamp the battery cell shell through the detection horizontal drive component, and then the detection is carried out. Finally, the displacement of the second detection clamp is detected by the displacement sensor to determine whether the length direction of the battery cell shell is qualified, thereby further improving the detection stability and accuracy and further improving product quality.

[0006] Preferably, the detection bracket includes a support top plate and support columns disposed on both lateral sides of the support top plate; the first detection plate and the second detection plate are located on both sides below the support top plate, respectively. The gantry-shaped detection bracket provides detection space for the first and second detection plates, while also significantly saving lateral installation space and improving space utilization.

[0007] Preferably, the limit drive is a limit cylinder located below the support top plate and arranged horizontally on one lateral side of the detection bracket; the first detection clamp is vertically mounted on the telescopic rod of the limit cylinder. During dimensional measurement, the telescopic rod of the limit cylinder is always in the extended extreme state. By driving the limit cylinder, the first detection clamp is conveniently driven to achieve horizontal linear movement, and by pushing the telescopic rod of the limit cylinder to the extreme position, hard limit can be ensured and the starting position of the measurement can be kept unchanged.

[0008] Preferably, the detection horizontal drive assembly includes a horizontal drive cylinder and a drive platform; the horizontal drive cylinder is horizontally arranged on the bottom surface of the support top plate, the drive platform is connected to the telescopic rod of the horizontal drive cylinder, and the drive platform is slidably connected to the bottom surface of the support top plate via a support slide rail; the second detection clamping plate is vertically arranged on the drive platform. The horizontal drive cylinder drives the second detection clamping plate on the drive platform to move horizontally, thereby cooperating with the first detection clamping plate to achieve clamping detection.

[0009] Preferably, a sliding block is vertically provided on the bottom surface of the support top plate on a side away from the first detection splint; the sliding block is provided with transversely distributed sliding limit posts; in the initial state of dimensional measurement, the telescopic rod of the horizontal drive cylinder is in an extended state, and the drive platform is abutted against the sliding limit posts. The sliding limit posts on the sliding block ensure that the drive platform abuts against the sliding limit posts in the initial state, thereby ensuring that the initial position of the second detection splint is always maintained in one position, so that the sliding limit posts also serve as a hard limit, thereby facilitating subsequent displacement calculations.

[0010] Preferably, the displacement sensor is a grating ruler, which is laterally fixed to the side wall of the support top plate of the detection bracket. A first drag chain mounting plate is fixedly mounted on the support top plate; a second drag chain mounting plate is mounted on the drive platform; a drag chain is installed between the first and second drag chain mounting plates, and the grating ruler determines the displacement of the second detection plate based on the displacement of the drag chain. The grating ruler can accurately detect the displacement of the second detection plate, with an accuracy of up to 0.01 mm, achieving high-precision detection results.

[0011] Preferably, the first detection plate and the second detection plate are arranged opposite to each other and symmetrically.

[0012] Preferably, the housing seat is located between the first and second inspection plates, and the top surface of the housing seat is provided with transversely distributed housing recesses that match the cell housings. The housing recesses on the housing seat facilitate stable and horizontal placement of the cell housings, thereby facilitating the first and second inspection plates on either side to perform dimensional inspection on both ends of the cell housings, thereby ensuring accurate and stable inspection.

[0013] To sum up, the advantage of the present invention is that the first detection clamp is driven to move by the limit driving member to adapt to battery cell shells of different sizes, and the limit driving member pushes out the first detection clamp to act as a hard limit, thereby ensuring that the position of the first detection clamp remains unchanged, and the second detection clamp is driven to approach the first detection clamp and clamp the battery cell shell through the detection horizontal drive component, and then the detection is carried out, and finally the displacement of the second detection clamp is detected by the displacement sensor to determine whether the length direction of the battery cell shell is qualified, thereby further improving the detection stability, consistency and accuracy and further improving the production quality of the battery cell shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the first perspective of the high-precision size detection device for battery cell shells of the utility model.

[0015] Figure 2 It is a structural schematic diagram of the second viewing angle of the high-precision size detection device for battery cell shells of the utility model.

[0016] Figure 3 It is a structural diagram of the detection level drive component of the utility model.

[0017] Figure 4 It is a structural diagram of the battery cell shell currently produced and processed.

[0018] Description of reference numerals:

[0019] 1. Detection bracket; 11. Support top plate; 12. Support column; 13. Sliding block; 14. Sliding limit column; 15. First drag chain mounting plate; 2. Limit drive component; 3. First detection splint; 4. Detection horizontal drive assembly; 41. Horizontal drive cylinder; 42. Drive platform; 43. Support slide rail; 44. Second drag chain mounting plate; 45. Drag chain; 5. Second detection splint; 6. Displacement sensor; 7. Shell receiving seat; 71. Shell receiving groove; 8. Battery cell shell. DETAILED DESCRIPTION

[0020] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of the present application and are not intended to limit the scope of protection of the embodiments of the present application. Those skilled in the art may adjust them as needed to suit specific application scenarios.

[0021] In the description of the embodiments of this application, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of this application based on the specific circumstances.

[0022] In the embodiments of the present application, unless otherwise expressly specified or 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. Furthermore, a first feature being "above," "above," and "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," and "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.

[0023] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] like Figures 1 to 4As shown, a high-precision dimensional inspection device for battery cell casings includes an inspection bracket 1, a limit drive 2, a first inspection clamp 3, a horizontal inspection drive assembly 4, a second inspection clamp 5, a displacement sensor 6, and a casing receiving seat 7. The inspection bracket 1 includes a support top plate 11 and multiple support columns 12 disposed on the left and right sides of the support top plate 11. The first inspection clamp 3 and the second inspection clamp 5 are respectively located on both sides below the support top plate 11. The inspection bracket 1, in the form of a gantry, provides inspection space for the first and second inspection clamps 3 and 5, while also significantly saving lateral installation space and improving space utilization. The limit drive 2 is located on the right side of the detection bracket 1, the first detection clamp 3 is fixedly connected to the limit drive 2, and the limit drive 2 is used to push the first detection clamp 3 horizontally to the left to the limit position to realize the hard limit effect; the second detection clamp 5 is connected to the left side of the detection bracket 1 by horizontally moving the detection horizontal drive component 4, and the first detection clamp 3 and the second detection clamp 5 are horizontally opposite and symmetrically arranged, and the first detection clamp 3 and the second detection clamp 5 are relative to each other and move to release the battery cell shell 8; the displacement sensor 6 is arranged on the detection bracket 1 and is used to sense the displacement of the first detection clamp 3; during size detection, the precise size of the battery cell shell 8 is detected by the difference L3 between the initial distance L1 between the first detection clamp 3 and the second detection clamp 5 and the displacement L2 after the first detection clamp 3 moves. The shell receiving seat 7 is located between the first inspection clamp plate 3 and the second inspection clamp plate 5, and the top surface of the shell receiving seat 7 is provided with shell receiving grooves 71 that are distributed laterally and match the battery cell shell 8. In this embodiment, two shell receiving seats 7 are arranged at intervals to conveniently support the two ends of the battery cell shell 8. In actual production, a longer shell receiving seat 7 can also be used to achieve the purpose of holding. The shell receiving grooves 71 on the shell receiving seat 7 facilitate the stable and horizontal placement of the battery cell shell 8, thereby facilitating the first inspection clamp plate 3 and the second inspection clamp plate 5 on both sides to perform dimensional inspection on the two ends of the battery cell shell 8, thereby ensuring the accuracy and stability of the inspection. The first detection plate 3 is driven to move by the limit driving component 2 to adapt to battery cell shells 8 of different sizes, and the first detection plate 3 is pushed out by the limit driving component 2 to play a hard limit role, thereby ensuring that the position of the first detection plate 3 always remains unchanged, and the second detection plate 5 is driven to approach the first detection plate 3 and clamp the battery cell shell 8 through the detection horizontal drive component 4, and then the detection is carried out, and finally the displacement of the second detection plate 5 is detected by the displacement sensor 6 to determine whether the length direction of the battery cell shell 8 is qualified, thereby further improving the detection stability, consistency and accuracy, and further improving the production quality of the battery cell shell 8.

[0025] like Figures 1 to 3As shown, the limit drive member 2 is a limit cylinder, which is located below the support top plate 11 and is horizontally arranged in the left-right direction on the right side of the detection bracket 1; the first detection clamp 3 is vertically arranged on the telescopic rod of the limit cylinder, and the first detection clamp 3 is distributed in the front-back direction. During dimensional measurement, the telescopic rod of the limit cylinder is always in the extended extreme state. By driving it in the form of a limit cylinder, it is convenient to drive the first detection clamp 3 to achieve horizontal linear movement, and by pushing the telescopic rod of the limit cylinder to the extreme position, it can ensure hard limit and ensure that the starting position of the measurement remains unchanged.

[0026] like Figures 1 to 3 As shown, the detection horizontal drive assembly 4 includes a horizontal drive cylinder 41 and a drive platform 42. The horizontal drive cylinder 41 is horizontally arranged in the middle of the bottom surface of the support top plate 11 in the left-right direction. The drive platform 42 is connected to the telescopic rod of the horizontal drive cylinder 41. The drive platform 42 is connected to the bottom surface of the support top plate 11 in the left-right direction through a support slide rail 43. The second detection clamp plate 5 is vertically arranged on the drive platform 42, and the second detection clamp plate 5 is distributed in the front-back direction. The horizontal drive cylinder 41 drives the second detection clamp plate 5 on the drive platform 42 to move horizontally left and right, so that the second detection clamp plate 5 can cooperate with the first detection clamp plate 3 to achieve size detection.

[0027] like Figure 3 As shown, a sliding block 13 is vertically provided on the left side of the bottom surface of the support top plate 11; sliding limit posts 14 are provided on the sliding block 13 in the left and right directions; in the initial state of dimensional measurement, the telescopic rod of the horizontal drive cylinder 41 is in the extended state, and the driving platform 42 abuts against the sliding limit posts 14. The sliding limit posts 14 on the sliding block 13 ensure that the driving platform 42 abuts against the sliding limit posts 14 in the initial state, thereby ensuring that the initial position of the second detection clamping plate 5 is always maintained in one position, so that the sliding limit posts 14 also serve as a hard limit, thereby facilitating the subsequent displacement calculation.

[0028] like Figures 1 to 3 As shown, displacement sensor 6 is a grating ruler, which is laterally fixed to the side wall of the support top plate 11 of the detection bracket 1. A first drag chain mounting plate 15 is fixed to the support top plate 11; a second drag chain mounting plate 44 is installed on the drive platform 42; and a drag chain 45 is installed between the first drag chain mounting plate 15 and the second drag chain mounting plate 44. The grating ruler determines the displacement of the second detection clamping plate 5 based on the displacement of the drag chain 45. The grating ruler can accurately detect the displacement of the second detection clamping plate 5, with an accuracy of up to 0.01 mm, achieving high-precision detection results.

[0029] During size inspection, the battery cell shell 8 will be placed horizontally in the shell receiving groove 71 of two horizontally spaced shell receiving seats 7 by a robot or manually, and located between the first inspection clamp 3 and the second inspection clamp 5. The right side is driven by the limit driving component 2 in the form of a limit cylinder to push out the first inspection clamp 3, and the telescopic rod of the limit cylinder is pushed out to the limit position and rests on the right end of the battery cell shell 8. At the same time, the force of the limit cylinder pushing out is relatively large, which serves the purpose of using the first inspection clamp 3 as a reference plate, ensuring that the first inspection clamp 3 on the right side is always pushed out to the limit position, so that the first inspection clamp 3 serves the purpose of hard limiting. The movement of the first inspection clamp 3 is driven by the limit driving component 2 instead of choosing a fixed method because it can adapt to battery cell shells 8 of different lengths, thereby improving the versatility and adaptability of the equipment. The left side is driven by the horizontal driving cylinder 41 to drive the driving platform 42 to be pushed out and abut against the sliding limit column 14, which has a hard limit effect on the second detection splint 5, thereby determining the baseline of the revelation state of the second detection splint 5. The force of the horizontal driving cylinder 41 is less than the force of the limit cylinder, ensuring that the limit cylinder is always in the limit position. At this time, the initial distance between the ejected second detection splint 5 and the ejected first detection splint 3 is L1. The second detection splint 5 is driven to move to the right by the horizontal driving cylinder 41 until it abuts against the left end of the battery cell shell 8. The displacement sensor 6 is detected in the form of a grating ruler. When the second detection splint 5 abuts against the battery cell shell 8, the signal is transmitted to the horizontal driving cylinder 41 through the grating ruler to stop it. At the same time, the displacement of the second detection splint 5 is recorded as L2. The size of the battery cell shell 8 is L3: L3=L1-L2. The detection value is obtained by the displacement difference between the two to check whether this detection value is within the qualified range. This method can accurately and stably detect the battery cell housing 8 to ensure the production quality of the battery cell housing 8.

[0030] In the description of the embodiments of the present application, it should be noted that in the description of the present application, terms such as "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present application.

[0031] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "in the present embodiment", "specific example", or "some examples" means that the specific features, mechanisms, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0032] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A high-precision size detection device for a battery cell shell, characterized in that: The invention comprises a detection bracket (1), a limit drive (2), a first detection clamp (3), a detection horizontal drive assembly (4), a second detection clamp (5), a displacement sensor (6) and a shell receiving seat (7); the shell receiving seat (7) is used to place the battery shell in a horizontal position, and both lateral ends of the battery shell are exposed outside the shell receiving seat (7); the second detection clamp (5) and the first detection clamp (3) are respectively located on the lateral sides of the shell receiving seat (7); the first detection clamp (3) is fixedly connected to the limit drive (2), and the limit drive (2) is used to push the first detection clamp (3) out horizontally to the limit position A hard limit function is realized; the second detection clamp (5) is connected to the detection bracket (1) in a horizontally movable manner through the detection horizontal drive component (4); the first detection clamp (3) and the second detection clamp (5) are relatively moved to clamp the battery cell shell or move oppositely to loosen the battery cell shell; the displacement sensor (6) is arranged on the detection bracket (1) and is used to detect the displacement of the first detection clamp (3); during size detection, the precise size of the battery cell shell is detected by the difference L3 between the initial distance L1 between the first detection clamp (3) and the second detection clamp (5) and the displacement L2 after the first detection clamp (3) is moved.

2. The high-precision size detection device for battery cell shells according to claim 1, characterized in that: The detection bracket (1) comprises a support top plate (11) and support columns (12) arranged on both lateral sides of the support top plate (11); the first detection clamping plate (3) and the second detection clamping plate (5) are respectively located on both sides below the support top plate (11).

3. The high-precision size detection device for battery cell shells according to claim 2, characterized in that: The limit drive member (2) is a limit cylinder, which is located below the support top plate (11) and is laterally arranged on a lateral side of the detection bracket (1); the first detection clamp (3) is vertically arranged on the telescopic rod of the limit cylinder, and when measuring the size, the telescopic rod of the limit cylinder is always in an extended limit state.

4. The high-precision size detection device for battery cell shells according to claim 2, characterized in that: The detection horizontal drive assembly (4) includes a horizontal drive cylinder (41) and a drive platform (42); the horizontal drive cylinder (41) is horizontally arranged on the bottom surface of the support top plate (11), the drive platform (42) is connected to the telescopic rod of the horizontal drive cylinder (41), and the drive platform (42) is slidably connected to the bottom surface of the support top plate (11) through a support slide rail (43); the second detection clamping plate (5) is vertically arranged on the drive platform (42).

5. The high-precision size detection device for battery cell shells according to claim 4, characterized in that: A sliding block (13) is vertically provided on the bottom surface of the supporting top plate (11) away from the first detection clamping plate (3); a sliding limit column (14) distributed laterally is provided on the sliding block (13); in the initial state of dimension measurement, the telescopic rod of the horizontal driving cylinder (41) is in an extended state, and the driving platform (42) is pressed against the sliding limit column (14).

6. The high-precision size detection device for a battery cell casing according to claim 4 or 5, characterized in that: The displacement sensor (6) is a grating ruler, which is laterally fixed on the side wall of the support top plate (11) of the detection bracket (1); a first drag chain mounting plate (15) is fixedly provided on the support top plate (11); a second drag chain mounting plate (44) is provided on the driving platform (42); a drag chain (45) is installed between the first drag chain mounting plate (15) and the second drag chain mounting plate (44); the grating ruler determines the displacement of the second detection clamping plate (5) by the displacement of the drag chain (45).

7. The high-precision size detection device for battery cell shells according to claim 1, characterized in that: The first detection clamping plate (3) and the second detection clamping plate (5) are arranged oppositely and symmetrically.

8. The high-precision size detection device for battery cell casing according to claim 1, characterized in that: The shell receiving seat (7) is located between the first detection clamping plate (3) and the second detection clamping plate (5), and the top surface of the shell receiving seat (7) is provided with shell receiving grooves (71) that are distributed laterally and match the battery cell shell.

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