Battery cell size detection device

Abstract

The application provides a kind of electric core size detection device, it is related to electric core measuring equipment technical field, comprising: measuring assembly, the measuring assembly is by height measuring mechanism, shape measuring mechanism and diameter measuring mechanism is constituted, measuring assembly can realize the collaborative measurement of various size data of electric core, effectively simplify measurement process, simultaneously can real-time identification electric core surface depression, bulge, bending and other shape defects, realize the synchronous discrimination of size precision and appearance defect, provide comprehensive reliable data support for electric core quality control, and measuring assembly can be used for the rapid measurement and detection of different specifications of electric core, solve the problem that the existing measurement and detection device does not have collaborative detection function, measurement procedure is complicated, and the shape data of electric core cannot be detected, and it is difficult to identify surface bulge, depression, local deformation and other appearance defects.

Description

Technical Field

[0001] This invention relates to the field of battery cell measurement equipment technology, and in particular to a battery cell external dimension detection device. Background Technology

[0002] The battery cell is the core unit in a battery that can directly store and discharge electricity. It is a basic component of power batteries and energy storage systems. The external dimensions of the battery cell directly affect the assembly compatibility and space utilization of the module and battery pack. It is a key indicator for the consistency control of the battery cell. Dimensional deviations can lead to assembly interference, uneven gaps, affect heat dissipation and long-term cycle reliability, and even cause safety hazards caused by uneven extrusion stress. Therefore, the external dimensions of the battery cell must be accurately measured and tested before leaving the factory to ensure product quality and compatibility with subsequent applications.

[0003] Existing cell size measurement and testing devices lack collaborative testing capabilities. Each cell size requires separate measurement and recording, which is cumbersome. Furthermore, the testing devices cannot detect the cell's shape data, making it difficult to identify surface defects such as bulges, dents, and localized deformations. This can easily lead to missed detection of cells with such issues, which then flow into subsequent module assembly processes, affecting the battery pack's assembly compatibility and operational safety. The devices also lack flexibility and comprehensiveness, resulting in limited practicality. Summary of the Invention

[0004] This invention relates to a battery cell dimensional inspection device, which includes a measuring component. The measuring component enables the coordinated measurement of various dimensional data of the battery cell. Specifically, a single clamping operation can simultaneously detect the cell height, outer diameter, terminal post protrusion height, and dimensional parameters, effectively simplifying the measurement process, reducing repeated clamping errors, and significantly improving inspection efficiency and data consistency. Simultaneously, it can identify surface defects such as dents, bulges, and bends in the battery cell in real time, achieving simultaneous judgment of dimensional accuracy and appearance defects. This provides comprehensive and reliable data support for battery cell quality control. Furthermore, the measuring component can rapidly measure and inspect battery cells of different specifications, offering exceptional flexibility, comprehensiveness, accuracy, and practicality.

[0005] This invention provides a battery cell shape and size detection device, specifically including: a placement assembly, which consists of a detection platform, a mounting frame, and an electric push rod a, wherein the mounting frame is fixedly installed on the top of the detection platform, and the electric push rod a is fixedly installed on the top of the mounting frame, and the detection platform has a battery cell placement slot inside; it also includes a measurement assembly and a laser measurement module, wherein the measurement assembly consists of a height measuring mechanism, a shape measuring mechanism, and a diameter measuring mechanism; The height measuring mechanism includes a measuring support frame, an electric push rod b, a control seat, and a pole post support rod. The measuring support frame is inserted into the top of the testing platform and is fixedly installed at the bottom end of the electric push rod a. The electric push rod b is fixedly installed on the top of the measuring support frame, and the control seat is fixedly installed at the bottom end of the electric push rod b. The pole post support rod is inserted into the interior of the measuring support frame. The shape measuring mechanism includes a positioning frame, a displacement seat, a detection support rod, and a contact wheel. The positioning frame is inserted into the top of the testing platform, the displacement seat is inserted into the interior of the positioning frame, and the detection support rod is inserted into the side of the displacement seat. The contact wheel is rotatably connected to the side of the detection support rod. The diameter measuring mechanism includes a positioning disc, a positioning motor, and four fixed support blocks. The positioning disc is rotatably connected to the bottom of the battery cell placement slot of the testing platform, and the positioning motor is fixedly installed at the bottom of the testing platform. The positioning motor and the positioning disc are connected by a transmission. The fixed support blocks are inserted into the top of the testing platform, and the four fixed support blocks are arranged in a circular array, with an included angle of ninety degrees between adjacent fixed support blocks.

[0006] Furthermore, it also includes a laser measurement module, which has four groups: a height module, an pole module, a shape module, and a diameter module. The laser measurement module consists of a distance sensor and a target plate assembly. The distance sensor of the height module is fixedly installed on the side of the measuring support frame, and the target plate is fixedly installed inside the detection platform directly below the distance sensor. The target plate of the pole module is fixedly installed on the top of the pole support rod, and the distance sensor is fixedly installed inside the measuring support frame directly above the target plate. The distance sensor of the shape module is fixedly installed inside the displacement seat, and the target plate is fixedly installed inside the detection support rod. The distance sensor of the diameter module is fixedly installed on the side of one of the fixed supports, and the target plate is fixedly installed on the side of the fixed support block opposite to the fixed support block.

[0007] Furthermore, the positioning disk has an arc-shaped positioning groove inside, and the bottom of the fixing block has a positioning rod, which is inserted into the positioning groove.

[0008] Furthermore, the top of the pole post is provided with a reset top spring, and the two ends of the reset top spring abut against the bottom of the pole post and the inside of the measuring frame, respectively. The pole post, the center of the cell placement slot and the clamping center of the diameter measuring mechanism are coaxially arranged.

[0009] Furthermore, the bottom of the positioning frame is provided with a positioning top spring, and the two ends of the positioning top spring abut against the bottom of the positioning frame and the inside of the detection table, respectively.

[0010] Furthermore, the detection rod is provided with a pressing spring inside, and the two ends of the pressing spring abut against the inside of the detection rod and the inside of the displacement seat, respectively.

[0011] Furthermore, the displacement seat has a control rod on its side, and the positioning frame has a straight track groove inside, with the control rod inserted into the track groove.

[0012] Furthermore, the control seat has an inclined control groove inside its body, and the rod part of the control rod that passes through the track groove is inserted into the inside of the control groove.

[0013] Furthermore, the elastic force of the clamping top spring is less than that of the positioning top spring.

[0014] This invention provides a battery cell external dimension detection device, which has the following beneficial effects: The measurement component enables the coordinated measurement of various dimensional data of battery cells. In a single clamping operation, it can simultaneously detect cell height, outer diameter, terminal protrusion height, and shape parameters, effectively simplifying the measurement process, reducing repeated clamping errors, and significantly improving detection efficiency and data consistency. It can also identify surface defects such as dents, bulges, and bends in the battery cell in real time, achieving simultaneous judgment of dimensional accuracy and appearance defects. This provides comprehensive and reliable data support for battery cell quality control. Furthermore, the measurement component can be used for rapid measurement and detection of battery cells of different specifications, improving the flexibility, comprehensiveness, accuracy, and practicality of the device. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0016] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0017] In the attached diagram: Figure 1 A schematic diagram of the structure of the present invention is shown.

[0018] Figure 2 A schematic diagram of the internal structure of the present invention is shown.

[0019] Figure 3 The present invention is shown. Figure 2 Enlarged structural diagram of part A in the middle.

[0020] Figure 4 The present invention is shown. Figure 2 Enlarged structural diagram of part B in the middle.

[0021] Figure 5 A schematic diagram of the disassembled diameter measuring mechanism of the present invention is shown.

[0022] Figure 6 A schematic diagram of the disassembled height measuring mechanism of the present invention is shown.

[0023] Figure 7 A schematic diagram of the disassembled shape measuring mechanism of the present invention is shown.

[0024] Figure 8 This diagram shows the internal structure of the present invention after the battery cell is fixed inside the battery cell placement slot.

[0025] Figure 9 The present invention is shown. Figure 8 A schematic diagram of the internal structure after the measuring bracket comes into contact with the top of the battery cell.

[0026] Figure 10 The present invention is shown. Figure 9 A schematic diagram of the internal structure after the middle contact wheel contacts the outside of the battery cell.

[0027] Figure 11 The present invention is shown. Figure 10 Enlarged structural diagram of part C in the middle.

[0028] Figure 12 The present invention illustrates the application of the present invention. Figure 10 A schematic diagram of the internal structure during the inspection of the external appearance of the battery cell.

[0029] Figure 13 A schematic diagram of the data measured by the measuring component of the present invention is shown.

[0030] Figure 14 This diagram illustrates the internal structure of the present invention when testing battery cells of different specifications.

[0031] List of reference numerals 1. Component placement; 101. Testing table; 102. Mounting bracket; 103. Electric push rod a; 2. Height measuring mechanism; 201. Measuring support frame; 202. Electric push rod b; 203. Control base; 2031. Control slot; 204. Pole post support rod; 2041. Return top spring; 3. Shape measuring mechanism; 301. Positioning frame; 3011. Positioning top spring; 3012. Track groove; 302. Displacement seat; 3021. Control rod; 303. Detection abutment rod; 3031. Pressing top spring; 304. Contact wheel; 4. Diameter measuring mechanism; 401. Positioning plate; 4011. Positioning groove; 402. Positioning motor; 403. Fixed stop block; 4031. Positioning rod; 51. Height module; 52. Pole post module; 53. Shape module; 54. Diameter module. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Please refer to Figures 1 to 14 Example 1: This invention proposes a battery cell shape and size detection device, comprising: a placement component 1, which consists of a detection platform 101, a mounting frame 102, and an electric push rod a103. The mounting frame 102 is fixedly installed on the top of the detection platform 101, and the electric push rod a103 is fixedly installed on the top of the mounting frame 102. The detection platform 101 has a battery cell placement slot inside. It also includes a measurement component and a laser measurement module. The measurement component consists of a height measuring mechanism 2, a shape measuring mechanism 3, and a diameter measuring mechanism 4. The height measuring mechanism 2 includes a measuring support frame 201, an electric push rod b202, a control seat 203, and a pole rod 204. The measuring support frame 201 is inserted into the top of the testing table 101, and is fixedly installed at the bottom end of the electric push rod b103. The electric push rod b202 is fixedly installed on the top of the measuring support frame 201, and the control seat 203 is fixedly installed at the bottom end of the electric push rod b202. The pole rod 204 is inserted into the interior of the measuring support frame 201. The shape measuring mechanism 3 includes a positioning frame 301, a displacement seat 302, a testing support rod 303, and a contact wheel 304. The positioning frame 301 is inserted into the top of the testing table 101, and the displacement seat 302 is inserted into the bottom end of the testing table 101. Inside the positioning frame 301, the detection abutment 303 is inserted into the side of the displacement seat 302, and the contact wheel 304 is rotatably connected to the side of the detection abutment 303; the diameter measuring mechanism 4 includes a positioning disk 401, a positioning motor 402 and four fixed abutments 403. The positioning disk 401 is rotatably connected to the bottom of the cell placement slot of the detection table 101, and the positioning motor 402 is fixedly installed at the bottom of the detection table 101. The positioning motor 402 and the positioning disk 401 are connected by transmission. The fixed abutments 403 are inserted into the top of the detection table 101, and the four fixed abutments 403 are arranged in a ring array. The included angle between adjacent fixed abutments 403 is ninety degrees.

[0034] The laser measurement module, positioning motor 402, electric push rod a103, and electric push rod b202 are electrically connected to the external power supply and control device. Their specific structure and working principle are existing mature technologies and will not be described in detail here. The system also includes a laser measurement module, which comprises four modules: a height module 51, an pole post module 52, a shape module 53, and a diameter module 54. Each laser measurement module consists of a distance sensor and a target plate assembly. The distance sensor of the height module 51 is fixedly mounted on the side of the measuring support frame 201, and the target plate is fixedly mounted inside the detection platform 101 directly below the distance sensor. The target plate of the pole post module 52 is fixedly mounted on the top of the pole post support rod 204, and the distance sensor is fixedly mounted inside the measuring support frame 201 directly above the target plate. The distance sensor of the shape module 53 is fixedly mounted inside the displacement seat 302, and the target plate is fixedly mounted inside the detection support rod 303. The distance sensor of the diameter module 54 is fixedly mounted on one of the fixed supports. The target plate is fixedly installed on the side of the fixed abutment block 403, which is opposite to the fixed abutment block 403. In use, the four sets of laser measurement modules correspond to the non-contact precise measurement of height, pole, shape and diameter parameters. The height measuring mechanism 2, together with the height module 51, can measure the height data of the battery cell. The height measuring mechanism 2, together with the pole module 52, can measure the height data of the protruding pole of the battery cell. The diameter measuring mechanism 4, together with the diameter module 54, can measure the outer diameter data of the battery cell. The use of the three sets of modules together can obtain the height, outer diameter and other parameters of the battery cell. The shape measuring mechanism 3 and the shape module 53, together, can determine whether there are defects such as dents and bulges in the shape of the battery cell based on the changes in the data during measurement. The detection is accurate and efficient.

[0035] The positioning disk 401 has an arc-shaped positioning groove 4011 inside, and the bottom of the fixing block 403 has a positioning rod 4031. The positioning rod 4031 is inserted into the positioning groove 4011. In use, when it is necessary to measure and test the battery cell, the battery cell is placed in the battery cell placement groove and the measurement and testing operation can begin. First, the diameter measuring mechanism 4 fixes the battery cell and measures its outer diameter. When the positioning motor 402 rotates, it can drive the positioning disk 401 to rotate. When the positioning disk 401 rotates, the positioning groove 4011 can drive the fixing block 403 to move through the positioning rod 4031. The four fixing blocks 403 work together to fix the battery cell. The forward and reverse rotation of the positioning motor 402 can be used to loosen and reposition the battery cell. It is convenient and flexible to use. After the fixing blocks 403 fix the battery cell, the diameter module 54 can measure the distance between two opposite fixing blocks 403 to obtain the data Dd. Dd is the outer diameter data of the battery cell. The measurement is convenient and fast.

[0036] The top of the pole post abutment 204 is equipped with a reset spring 2041, and the two ends of the reset spring 2041 abut against the bottom of the pole post abutment 204 and the inside of the measuring bracket 201, respectively. The pole post abutment 204, the center of the cell placement slot and the clamping center of the diameter measuring mechanism 4 are coaxially arranged. In use, after the cell is fixed, the height data of the cell and the protrusion height of the pole post can be measured by the height measuring mechanism 2. By controlling the extension of the electric push rod a103, the electric push rod a103 can drive the measuring bracket 201 to move downward until the measuring bracket 201 abuts. At the top of the battery cell, during this process, the terminal post abutment 204 is first lifted by the battery cell's terminal post, causing the terminal post abutment 204 to move upward and compress the reset spring 2041. At this time, the terminal post module 52 can measure the distance the terminal post abutment 204 is lifted and obtain the data as Db, which is the height data of the battery cell terminal post protrusion. The height module 51 can measure the distance between the bottom end face of the battery cell placement slot and the bottom end face of the measuring abutment 201 and obtain the data as Da, which is the height data of the battery cell. One clamping can realize the detection of three parameters, simplifying the operation process and improving the detection efficiency.

[0037] The positioning frame 301 has a positioning top spring 3011 at its bottom, with both ends of the positioning top spring 3011 abutting against the bottom of the positioning frame 301 and the inside of the detection table 101, respectively. The detection rod 303 has a pressing top spring 3031 inside, with both ends of the pressing top spring 3031 abutting against the inside of the detection rod 303 and the inside of the displacement seat 302, respectively. The elastic force of the pressing top spring 3031 is less than that of the positioning top spring 3011. In use, the shape measuring mechanism 3 can measure and inspect the shape of the battery cell. When the shape measuring mechanism 3 is in the reset state (electric push rod b202 is in the retracted state), it will not intrude into the battery cell clamping space, thus avoiding obstruction of battery cell clamping operations. When the shape measuring mechanism 3 is in the reset state, it controls... The control rod 3021 is located at the bottom end of the control slot 2031, so that under the positioning action of the control slot 2031, the shape measuring mechanism 3 will not intrude into the clamping space of the battery cell. The control rod 3021 is provided on the side of the displacement seat 302, and the positioning frame 301 has a straight track slot 3012 inside. The control rod 3021 is inserted into the track slot 3012. The seat body of the control seat 203 has an inclined control slot 2031 inside, and the rod part of the control rod 3021 that passes through the track slot 3012 is inserted into the control slot 2031. When it is necessary to measure and inspect the shape of the battery cell, the electric push rod b202 can be extended to realize the measurement and inspection operation. In the initial stage of extension, the electric push rod b202 is positioned by the positioning top spring 301. Under the support of 1, the control seat 203 cannot drive the measuring mechanism 3 to move down synchronously through the control groove 2031. Instead, the control seat 203 moves down independently. When the control seat 203 moves down independently, the control groove 2031 can drive the displacement seat 302 to move closer to the battery cell through the control rod 3021. During this process, the contact wheel 304 will abut against the outside of the battery cell, and the pressing top spring 3031 will be compressed by the detection rod 303 to achieve a buffering function and prevent the device from jamming. Until the control rod 3021 moves to the top of the control groove 2031, after the control rod 3021 moves to the top of the control groove 2031, a limit linkage is formed between the control seat 203 and the positioning frame 301. That is, when the control seat 203 moves down in the subsequent process, it can move through the control groove 2031. Under the coordinated action of the track groove 3012 and the control rod 3021, the shape measuring mechanism 3 is driven to move down and compress the positioning top spring 3011. After that, the contact wheel 304 can move axially on the outside of the battery cell. At the same time, the shape module 53 can monitor the position information of the detection rod 303 during the detection and obtain data Dc. When there are dents, bulges or other phenomena on the outside of the battery cell, the contact wheel 304 will move laterally (along the radial direction of the battery cell) in these parts. When the contact wheel 304 moves, it can drive the detection rod 303 to move synchronously. When the position of the detection rod 303 changes, the value of Dc will also change. Thus, by the change in Dc data, it can be determined whether there are defects such as bulges, dents or bends in the battery cell. The measurement is fast and comprehensive, and it is flexible and convenient to use.

[0038] The specific usage and function of this embodiment: In this invention, when it is necessary to measure and test the battery cell, the measurement and testing operation can begin after the battery cell is placed inside the battery cell placement slot. First, the diameter measuring mechanism 4 fixes the battery cell and measures its outer diameter. When the positioning motor 402 rotates, it can drive the positioning disk 401 to rotate. When the positioning disk 401 rotates, the positioning slot 4011 can drive the fixed block 403 to move through the positioning rod 4031. The four fixed blocks 403 work together to fix the battery cell. The forward and reverse rotation of the positioning motor 402 can achieve the loosening and unlocking operation of the battery cell. It is convenient and flexible to use. After the fixed blocks 403 fix the battery cell, the diameter module 54 can measure the distance between two opposite fixed blocks 403. The distance is recorded as data Dd, which is the outer diameter of the battery cell. After the battery cell is fixed, the height of the battery cell and the protrusion height of the terminal post can be measured by the height measuring mechanism 2. By controlling the extension of the electric push rod a103, the electric push rod a103 can drive the measuring bracket 201 to move downward until the measuring bracket 201 touches the top of the battery cell. During this process, the terminal post abutment 204 will first be lifted by the terminal post of the battery cell, causing the terminal post abutment 204 to move upward and compress the reset spring 2041. At this time, the terminal post module 52 can measure the distance that the terminal post abutment 204 is lifted, which is recorded as data Db. Db is the height of the protrusion of the battery cell terminal post. The height module 51 can also measure the distance from the bottom end face of the battery cell placement slot to the bottom of the measuring bracket 201. The distance between the end faces is denoted as Da, which represents the height of the battery cell. A single clamping operation can detect three parameters. The shape measuring mechanism 3 enables the measurement and detection of the battery cell's shape. When the shape measuring mechanism 3 is in the reset state (electric push rod b202 is in the retracted state), it will not intrude into the battery cell's clamping space, thus avoiding obstruction of clamping operations. In the reset state, the control rod 3021 is located at the bottom of the control groove 2031. Therefore, under the positioning effect of the control groove 2031, the shape measuring mechanism 3 will not intrude into the battery cell's clamping space. When it is necessary to measure and detect the battery cell's shape, the electric push rod b202 can be extended to achieve the measurement and detection operation. The electric push rod b202... In the initial elongation phase, due to the support of the positioning top spring 3011, the control seat 203 cannot drive the measuring mechanism 3 to move down synchronously via the control groove 2031. Instead, the control seat 203 moves down independently. When the control seat 203 moves down independently, the control groove 2031 can drive the displacement seat 302 to move closer to the battery cell via the control rod 3021. During this process, the contact wheel 304 will abut against the outside of the battery cell, and the pressing top spring 3031 will be compressed by the detection abutment rod 303 to achieve a buffering function and prevent the device from jamming. Until the control rod 3021 moves to the top of the control groove 2031, a limit linkage is formed between the control seat 203 and the positioning frame 301. That is, when the control seat 203 moves down in subsequent phases,Through the coordinated action of the control slot 2031, track slot 3012, and control rod 3021, the shape measuring mechanism 3 is driven downwards and the positioning top spring 3011 is compressed. Subsequently, the contact wheel 304 can move axially outside the battery cell. Simultaneously, the shape module 53 monitors the position information of the detection rod 303 during testing, obtaining data Dc. When dents, bulges, or other defects appear on the outside of the battery cell, the contact wheel 304 will move laterally (along the radial direction of the battery cell) at these locations. As the contact wheel 304 moves, it drives the detection rod 303 to move synchronously. When the position of the detection rod 303 changes, the value of Dc also changes. Therefore, by observing the change in Dc data, it can be determined whether the battery cell has defects such as bulges, dents, or bends. After the test is completed, the measuring components are reset, and the tested battery cell can be removed. Repeating the above operation allows for the measurement and testing of subsequent battery cells.

[0039] In another embodiment, pressure sensors are provided on the bottom of the measuring support 201 and the side of the fixed support block 403. This design can limit the contact and fixing pressure of the battery cell contact parts when measuring and detecting the battery cell size. When the pressure value is reached, the relevant driving parts can be automatically stopped, thereby avoiding damage to the battery cell due to excessive pressure and ensuring stable use.

Claims

1. A battery cell external dimension detection device, comprising: The placement component (1) consists of a testing platform (101), a mounting frame (102), and an electric push rod a (103). The mounting frame (102) is fixedly installed on the top of the testing platform (101), and the electric push rod a (103) is fixedly installed on the top of the mounting frame (102). The testing platform (101) has a cell placement slot inside. The component is characterized by further including a measuring component and a laser measuring module. The measuring component consists of a height measuring mechanism (2), a shape measuring mechanism (3), and a diameter measuring mechanism (4). The height measuring mechanism (2) includes a measuring support frame (201), an electric push rod b (202), a control seat (203), and a pole rod (204). The measuring support frame (201) is inserted into the top of the testing table (101), and the measuring support frame (201) is fixedly installed at the bottom end of the electric push rod a (103). The electric push rod b (202) is fixedly installed at the top of the measuring support frame (201), and the control seat (203) is fixedly installed at the bottom end of the electric push rod b (202). The pole rod (204) is inserted into the inside of the measuring support frame (201). The shape measuring mechanism (3) includes a positioning frame (301), a displacement seat (302), a detection support rod (303), and a contact wheel (304). The positioning frame (301) is inserted into the top of the testing table (101), the displacement seat (303), the contact wheel (304), and the contact wheel (304). 02) Inserted into the inside of the positioning frame (301), and the detection abutment (303) inserted into the side of the displacement seat (302), and the contact wheel (304) rotatably connected to the side of the detection abutment (303); the diameter measuring mechanism (4) includes a positioning disk (401), a positioning motor (402) and four fixed abutments (403). The positioning disk (401) is rotatably connected to the bottom of the cell placement slot of the detection table (101), and the positioning motor (402) is fixedly installed at the bottom of the detection table (101). The positioning motor (402) and the positioning disk (401) are connected by transmission. The fixed abutments (403) are inserted into the top of the detection table (101), and the four fixed abutments (403) are arranged in a ring array. The included angle between adjacent fixed abutments (403) is ninety degrees.

2. The battery cell external dimension detection device according to claim 1, characterized in that, It also includes a laser measurement module, which has four groups: a height module (51), an pole module (52), a shape module (53), and a diameter module (54). The laser measurement module consists of a distance sensor and a target plate assembly. The distance sensor of the height module (51) is fixedly installed on the side of the measuring support frame (201), and the target plate is fixedly installed inside the detection platform (101) directly below the distance sensor. The target plate of the pole module (52) is fixedly installed on the top of the pole support rod (204), and the distance sensor is fixedly installed inside the measuring support frame (201) directly above the target plate. The distance sensor of the shape module (53) is fixedly installed inside the displacement seat (302), and the target plate is fixedly installed inside the detection support rod (303). The distance sensor of the diameter module (54) is fixedly installed on the side of one of the fixed blocks (403), and the target plate is fixedly installed on the side of the fixed block (403) opposite to the fixed block (403).

3. The battery cell external dimension detection device according to claim 1, characterized in that, The positioning disk (401) has an arc-shaped positioning groove (4011) inside, and the bottom of the fixed block (403) is provided with a positioning rod (4031), which is inserted into the positioning groove (4011).

4. The battery cell external dimension detection device according to claim 1, characterized in that, The top of the pole post abutment (204) is provided with a reset top spring (2041), and the two ends of the reset top spring (2041) abut against the bottom of the pole post abutment (204) and the inside of the measuring abutment (201) respectively. The pole post abutment (204), the center of the cell placement slot and the clamping center of the diameter measuring mechanism (4) are coaxially arranged.

5. The battery cell external dimension detection device according to claim 1, characterized in that, The bottom of the positioning frame (301) is provided with a positioning top spring (3011), and the two ends of the positioning top spring (3011) abut against the bottom of the positioning frame (301) and the inside of the detection table (101) respectively.

6. The battery cell external dimension detection device according to claim 5, characterized in that, The detection rod (303) is provided with a pressing spring (3031) inside, and the two ends of the pressing spring (3031) abut against the inside of the detection rod (303) and the inside of the displacement seat (302) respectively.

7. The battery cell external dimension detection device according to claim 1, characterized in that, The displacement seat (302) is provided with a control rod (3021) on its side, and the positioning frame (301) is provided with a straight track groove (3012) inside, and the control rod (3021) is inserted into the track groove (3012).

8. The battery cell external dimension detection device according to claim 7, characterized in that, The control seat (203) has an inclined control groove (2031) inside its seat body, and the control rod (3021) passes through the rod part of the track groove (3012) and is inserted into the inside of the control groove (2031).

9. The battery cell external dimension detection device according to claim 8, characterized in that, The elastic force of the clamping top spring (3031) is less than that of the positioning top spring (3011).

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