Laser measuring device for detecting size of battery cell

Abstract

The invention provides a laser measuring device for battery cell size detection, and relates to the field of battery cell size detection.The laser measuring device comprises an adapting assembly, the adapting assembly is composed of an adapting mechanism and a measuring module b, after a battery cell is assembled in a positioning assembly, the length and width parameters of the battery cell can be measured at the same time, the operation process is simplified, and the measuring efficiency is improved. The detection efficiency is improved, the measurement module a and the measurement module b do not directly act on the exterior of the battery cell for detection, detection is achieved by measuring the distance between the clamping arm and the fixed abutting seat and the variable distance between the two sets of adaptation mechanisms, use is flexible and convenient, the requirement for assembly and placement precision during battery cell detection is low, and the detection efficiency is improved. The laser measuring device for detecting the battery cell is simple in structure and convenient to use, can guarantee extremely high measuring precision, and solves the problems that a laser measuring device for detecting the battery cell has a high requirement for the precision of the placement position of the battery cell, only one size parameter can be detected each time during detection, and the length and the width of the battery cell cannot be measured at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of battery cell size detection, and in particular to a laser measuring device for battery cell size detection. Background Art

[0002] The battery cell is the core unit for storing and releasing electrical energy in the battery. It is composed of positive and negative electrodes, electrolytes and separators. Its performance directly affects indicators such as battery capacity and life. The battery cell size parameters (such as length, width, height, diameter, etc.) are key factors that determine whether it can be adapted to various types of equipment (such as consumer electronics and electric vehicle battery packs). Size deviations can lead to poor assembly, abnormal structural stress or reduced space utilization, which in turn affects the overall performance and safety of the battery. Therefore, measuring the battery cell size is a necessary step to ensure the quality of battery cell production and ensure that it matches the application scenario. For example, the patent with application number: CN202510060245.1 discloses a battery cell size measurement system and method, which includes: a carrier platform, a measuring mechanism and a control The measuring mechanism includes a first laser device and a second laser device, and the first laser device and the second laser device are arranged on the measuring mechanism in a manner of facing each other; a carrier platform is used to drive the battery cell to be measured to move relative to the measuring mechanism; the first laser device is used to emit a first laser to the battery cell to be measured; the second laser device is used to emit a second laser to the battery cell to be measured; a controller is used to collect a first measurement value of the battery cell to be measured when it moves relative to the first laser device and a second measurement value when it moves relative to the second laser device, and calculate the battery cell size of the battery cell to be measured based on the first measurement value and the second measurement value, thereby avoiding the problem of scratches caused by direct contact with the battery cell, thereby improving the detection speed and detection cycle, and reducing the detection cost.

[0003] The existing laser measuring devices for battery cell testing have the following disadvantages: 1. The detection requires high accuracy in the placement of battery cells. If the battery cells are offset, tilted, or placed in an irregular position, the incident angle of the laser beam will easily deviate from the preset measurement path, which will cause systematic errors in the measured data of the battery cell dimensions (such as length, width, height, and diameter), significantly reducing the accuracy of the measurement results. The operator needs to repeatedly adjust the battery cell position to meet the measurement requirements, which is complicated. 2. It can only detect one size parameter at a time during detection and cannot measure the length and width of the battery cell at the same time, resulting in low detection efficiency. Summary of the Invention

[0004] The present invention relates to a laser measuring device for detecting the size of a battery cell. The laser measuring device comprises a positioning component and an adapting component. The positioning component can measure the width data of the battery cell, and the adapting component can measure the length data of the battery cell. After the battery cell is assembled into the interior of the positioning component, the length and width parameters of the battery cell can be measured simultaneously, thereby simplifying the operation process and improving the detection efficiency. The measuring modules a and b do not directly act on the outside of the battery cell for detection, but are achieved by measuring the distance between a clamping arm and a fixed support and the variable distance between two groups of adapting mechanisms. The laser measuring device is flexible and convenient to use, has low requirements on the assembly and placement accuracy during battery cell detection, can ensure extremely high measurement accuracy, and has high flexibility, accuracy and practicality.

[0005] The present invention provides a laser measuring device for detecting the size of a battery cell, specifically comprising: a positioning assembly, the positioning assembly comprising a mounting base, a clamping arm, and a fixed buttress, the clamping arm being plugged into a side surface of the mounting base, and the fixed buttress being fixedly mounted on the side surface of the mounting base, with the mounting base and the fixed buttress being parallel to each other; the positioning assembly also comprising a measuring module a, and the measuring module a comprising a laser sensor a and a target plate a, the laser sensor a being fixedly mounted inside the clamping arm, and the target plate a being fixedly mounted on a side surface of the fixed buttress; An adaptation component, the adaptation component consists of an adaptation mechanism and a measurement module b, the adaptation mechanism includes a connecting seat, an adaptation block and a conversion seat, and the adaptation mechanism is provided with two groups, one of which is fixedly installed on the top of the fixed dowel seat, and the other connecting seat is plugged into the top of the fixed dowel seat, the adaptation block is plugged into the inside of the connecting seat along the short side direction of the fixed dowel seat, and the conversion seat is plugged into the inside of the connecting seat along the long side direction of the fixed dowel seat; the measurement module b consists of a laser sensor b and a target plate b, the laser sensor b is fixedly installed on the side of one of the conversion seats, and the target plate b is fixedly installed on the side of the other conversion seat.

[0006] Furthermore, a clamping tension spring is provided on the side of the clamping arm, and two ends of the clamping tension spring are fixedly connected to the side of the clamping arm and the inside of the connecting seat respectively.

[0007] Furthermore, an adaptive top spring is provided inside the adaptive block, and two ends of the adaptive top spring respectively abut against the inside of the adaptive block and the inside of the connecting seat, and the elastic force of the adaptive top spring is smaller than the elastic force of the clamping tension spring.

[0008] Furthermore, the top of the adaption block is provided with an interfering oblique edge, and the interfering oblique edges of the two adaption blocks are arranged facing each other.

[0009] Furthermore, an inclined linkage groove is provided inside the adaptation block, and a linkage rod is provided outside the conversion seat, the linkage rod is inserted into the linkage groove, and the groove path of the linkage groove and the edge of the oblique side are parallel to each other.

[0010] Furthermore, the positioning assembly also includes a positioning screw, and the positioning screw is rotatably connected to the inside of the fixed seat, and the positioning screw is threadedly engaged with the connecting seat inserted on the top of the fixed seat.

[0011] Furthermore, the laser sensor a and the target plate a can measure the distance between the clamping arm and the fixed support.

[0012] Furthermore, when the adaptable block is not interfered by external forces, the distance measured by the laser sensor b and the target plate b is the shortest distance between the interfering oblique edges of the two adaptable blocks.

[0013] Furthermore, when the adaptable block is not resisted by external force, the lowest position of the resisting oblique edge is in the same plane as the fixed resist seat body.

[0014] The present invention provides a laser measuring device for detecting battery cell dimensions, which has the following beneficial effects: 1. The positioning component can measure the width of the battery cell, and the adapting component can measure the length of the battery cell. After the battery cell is assembled inside the positioning component, the length and width parameters of the battery cell can be measured at the same time, which simplifies the operation process and improves the detection efficiency. 2. The measurement modules a and b do not directly act on the outside of the battery cell for detection, but are achieved by measuring the distance between the clamping arm and the fixed support, and the variable distance between the two sets of adaptation mechanisms. They are flexible and convenient to use, have low requirements for assembly and placement accuracy during battery cell detection, and can ensure extremely high measurement accuracy, thereby improving the flexibility, adaptability and practicality of the device.

[0015] 3. Automatic positioning and high-precision measurement: The clamping arm and fixed seat of the positioning component cooperate with the clamping spring to achieve automatic centering of the battery cell. The laser sensor a and the target plate a directly measure the battery cell width, eliminating manual placement errors and improving measurement accuracy.

[0016] 4. Synchronous measurement of length and width: The adaptive component utilizes the design of the interference bevel and linkage groove to convert the clamping force in the width direction of the battery cell into displacement in the length direction. The laser sensor b and the target plate b are used to synchronously measure the length and width of the battery cell. The length and width data can be obtained in one clamping, simplifying the detection process.

[0017] 5. Adaptive adjustment function: The adaptive top spring enables the adaptive block to automatically adapt to battery cells of different sizes. The cooperation between the linkage slot and the linkage rod ensures that the measured data always corresponds to the actual length of the battery cell, reducing the accuracy requirements for the battery cell placement and making the operation more flexible.

[0018] 6. Adjustable measuring range design: The positioning screw can be adjusted to the initial position of the adaptation mechanism, expanding the device's measuring range for battery cells of different sizes, enhancing versatility, and being suitable for multi-specification battery cell production scenarios.

[0019] 7. Simplified data processing: By presetting the reference distance Xa and the displacement compensation mechanism (Xd + Xc), the measurement value of the laser sensor b is directly converted into the cell length D, eliminating the need for complex algorithms and improving detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments are briefly introduced below.

[0021] The drawings described below only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0022] In the attached figure: Figure 1 Shown is a schematic structural diagram of the present invention.

[0023] Figure 2 The present invention is shown Figure 1 Schematic diagram of the structure from the side.

[0024] Figure 3 The figure shows the internal structure of the positioning assembly of the present invention in the reset state.

[0025] Figure 4 The present invention is shown Figure 3 Schematic diagram of the enlarged structure of part A in the middle.

[0026] Figure 5 It shows a schematic structural diagram of the disassembled adaptation mechanism and measurement module b of the present invention.

[0027] Figure 6 The figure shows a schematic structural diagram of the positioning assembly of the present invention after being disassembled.

[0028] Figure 7 A schematic diagram of the internal structure when measuring the battery cell size data (the battery cell is assembled inside the positioning component) according to the present invention is shown.

[0029] Figure 8 The present invention is shown Figure 7 Schematic diagram of the enlarged structure of part B in the middle.

[0030] Figure 9 The present invention shows that the Figure 3 Schematic diagram of the internal structure after adapting to the effective range of the component.

[0031] Figure 10 The present invention is shown Figure 3 Schematic diagram of measurement data measured by measurement module b.

[0032] Figure 11 The present invention is shown Figure 7 Schematic diagram of measurement data measured by measurement module b.

[0033] Reference Signs List 1. Positioning assembly; 101. Mounting seat; 102. Clamping arm; 1021. Clamping spring; 103. Fixed support; 104. Laser sensor a; 105. Target plate a; 106. Positioning screw; 2. Adaptation mechanism; 201. Connecting seat; 202. Adaptation block; 2021. Adaptation top spring; 2022. Interference bevel; 2023. Linkage slot; 203. Conversion seat; 2031. Linkage rod; 3. Measurement module b; 301. Laser sensor b; 302. Target plate b.

[0034] It should be noted that Xa is the shortest distance between the conflicting oblique sides of the two adaptive blocks when the adaptive block is not subject to external force, and Xd and Xc are the displacement distances of the conversion seat after the two sets of adaptive components are subject to the resistance of the outer wall of the battery cell. DETAILED DESCRIPTION

[0035] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] Please refer to Figures 1 to 11 :Example 1: The present invention provides a laser measuring device for detecting the size of a battery cell, comprising: a positioning assembly 1, wherein the positioning assembly 1 includes a mounting base 101, a clamping arm 102, and a fixed buttress 103. The clamping arm 102 is plugged into a side surface of the mounting base 101, and the fixed buttress 103 is fixedly mounted on a side surface of the mounting base 101, with the mounting base 101 and the fixed buttress 103 being parallel to each other; the positioning assembly 1 also includes a measuring module a, and the measuring module a is composed of a laser sensor a104 and a target plate a105. The laser sensor a104 is fixedly mounted inside the clamping arm 102, and the target plate a105 is fixedly mounted on a side surface of the fixed buttress 103. Adaptation component, the adaptation component consists of an adaptation mechanism 2 and a measurement module b3, the adaptation mechanism 2 includes a connecting seat 201, an adaptation block 202 and a conversion seat 203, and the adaptation mechanism 2 is provided with two groups, one of which is fixedly installed on the top of the fixed seat 103, and the other connecting seat 201 is plugged into the top of the fixed seat 103, the adaptation block 202 is plugged into the inside of the connecting seat 201 along the short side direction of the fixed seat 103, and the conversion seat 203 is plugged into the inside of the connecting seat 201 along the long side direction of the fixed seat 103; the measurement module b3 consists of a laser sensor b301 and a target plate b302, the laser sensor b301 is fixedly installed on the side of one of the conversion seats 203, and the target plate b302 is fixedly installed on the side of the other conversion seat 203.

[0037] Among them, a clamping tension spring 1021 is provided on the side of the clamping arm 102, and the two ends of the clamping tension spring 1021 are fixedly connected to the side of the clamping arm 102 and the inside of the connecting seat 201 respectively. In use, the width data of the battery cell can be measured through the positioning component 1, and the width data measurement operation can be achieved by pulling the clamping arm 102 to position the battery cell. After pulling the clamping arm 102, the clamping arm 102 can move in the direction away from the fixed support 103 to increase the distance between the two and lengthen the clamping tension spring 1021, which is convenient for the insertion operation of the battery cell. After the battery cell is placed between the clamping arm 102 and the fixed buttress 103, and the clamping arm 102 is released, the clamping arm 102 can automatically move toward the fixed buttress 103 under the action of the clamping tension spring 1021, thereby clamping and positioning the battery cell inside the positioning component 1 for measurement operation. The two sides of the battery cell respectively contact the sides of the clamping arm 102 and the fixed buttress 103, so that the laser sensor a104 and the target plate a105 can be used in combination to measure the spacing data between the clamping arm 102 and the fixed buttress 103, that is, the width data of the battery cell, and the detection is convenient and fast.

[0038] Among them, the interior of the adaptive block 202 is provided with an adaptive top spring 2021, and the two ends of the adaptive top spring 2021 are respectively against the interior of the adaptive block 202 and the interior of the connecting seat 201, and the elastic force of the adaptive top spring 2021 is less than the elastic force of the clamping tension spring 1021. In use, when the battery cell is positioned and installed in the interior of the positioning component 1, the adaptive component can synchronously measure the length data of the battery cell, and can realize the measurement of the length and width of the battery cell in one assembly, which simplifies the detection process and improves the detection efficiency. The top of the adaptive block 202 is provided with a contact bevel 2022, and the two adaptive The oblique edges 2022 of the blocks 202 are arranged facing each other. When the battery cell is positioned and installed inside the positioning assembly 1, due to the clamping and positioning effect of the clamping arm 102 and the fixed stop 103 on it, the outer wall of the battery cell will conflict and squeeze the oblique edges 2022 of the two sets of adaptation mechanisms 2, so that the adaptation block 202 moves toward the inside of the connecting seat 201 to avoid the clamping and positioning action of the battery cell, and when the adaptation block 202 moves toward the inside of the connecting seat 201, it will compress the adaptation top spring 2021. The interior of the adaptation block 202 is provided with an inclined linkage groove 2023, and the exterior of the conversion seat 203 is provided with a The linkage rod 2031 is inserted into the linkage groove 2023. The groove path of the linkage groove 2023 and the edge of the oblique side 2022 are parallel to each other. When the adapting block 202 moves, the linkage groove 2023 can drive the conversion seat 203 to move along the long side direction of the fixed support 103 inside the connecting seat 201 through the linkage rod 2031, thereby converting the movement of the adapting block 202 along the short side direction of the fixed support 103 into the movement of the conversion seat 203 along the long side direction of the fixed support 103. The edges of the interfering bevels are parallel to each other. This design ensures that the spacing data measured by the laser sensor b301 and the target plate b302 are always the spacing data between the two interfering bevels 2022 and the contact points on both sides of the battery cell, that is, the measured data is always the spacing data between the two interfering bevels 2022 and the intersection position of the fixed support 103. The spacing data is the length data of the battery cell, and the inclined adaptive bevel 2022 can adapt to the rapid measurement of battery cells of different lengths, and has a low assembly accuracy for the battery cell inside the positioning component 1, making it convenient and flexible to use.

[0039] Among them, the positioning component 1 also includes a positioning screw 106, and the positioning screw 106 is rotatably connected to the inside of the fixed buttress 103, and the positioning screw 106 is threadedly engaged with the connecting seat 201 inserted on the top of the fixed buttress 103. During use, since the effective interference range of the interference bevel 2022 and the battery cell is limited, the positioning screw 106 can be used to adjust the use position of one group of adaptation mechanisms 2 on the fixed buttress 103, thereby changing the effective measurement range of the adaptation component, and can adapt to the detection of battery cells with large differences in battery cell size, and has strong adaptability.

[0040] Among them, the laser sensor a104 and the target plate a105 can measure the distance between the clamping arm 102 and the fixed support 103. When the adapting block 202 is not subject to external force resistance, the distance measured by the laser sensor b301 and the target plate b302 is the closest distance between the conflicting bevels 2022 of the two adapting blocks 202. When the adapting block 202 is not subject to external force resistance, the lowest position of the conflicting bevels 2022 is in the same plane as the base body of the fixed support 103. In use, when the adapting block 202 is not subject to external force resistance, the distance measured by the laser sensor b301 and the target plate b302 is the closest distance between the conflicting bevels 2022 of the two adapting blocks 202. Here, when the adapting block 202 is not subject to external force resistance, the laser sensor b301 and the target plate b The distance measured by 302 is the closest distance between the contacting bevels 2022 of the two adaptation blocks 202, which is defined as Xa. When the battery cell is assembled, the battery cell can drive the adaptation block 202 to move by contacting and squeezing the contacting bevels 2022, and the adaptation block 202 can drive the conversion seat 203 to move. The displacement distance of the conversion seat 203 of the left adaptation mechanism 2 is defined as Xd, and the displacement distance of the conversion seat 203 of the right adaptation mechanism 2 is defined as Xc. After the battery cell is assembled, the measured battery cell length data D=Xa+Xd+Xc, and Xa+Xd+Xc is the measurement data obtained by the laser sensor b301 and the target plate b302, thereby realizing the function of quickly adapting to the battery cell installation position and measuring the battery cell length data.

[0041] The specific usage and function of this embodiment: In the present invention, the width data of the battery cell can be measured by the positioning component 1, and the width data measurement operation can be realized by pulling the clamping arm 102 to position the battery cell. After pulling the clamping arm 102, the clamping arm 102 can move in the direction away from the fixed buttress 103 to increase the distance between the two and lengthen the clamping tension spring 1021, which is convenient for the insertion operation of the battery cell. After the battery cell is placed between the clamping arm 102 and the fixed buttress 103, the clamping arm 102 is released. Under the action of the clamping tension spring 1021, the clamping arm 102 can automatically move in the direction of the fixed buttress 103, thereby clamping and positioning the battery cell inside the positioning component 1 for measurement operation. The sides respectively contact the sides of the clamping arm 102 and the fixed buttress 103, so that the coordinated use of the laser sensor a104 and the target plate a105 can measure the spacing data between the clamping arm 102 and the fixed buttress 103, that is, the width data of the battery cell. After the battery cell is positioned and installed inside the positioning component 1, the adaptation component can synchronously measure the length data of the battery cell, and can realize the measurement of the length and width of the battery cell in one assembly, which simplifies the detection process and improves the detection efficiency. After the battery cell is positioned and installed inside the positioning component 1, due to the clamping and positioning effect of the clamping arm 102 and the fixed buttress 103 on it, the outer wall of the battery cell will contact and squeeze the contact bevel 2022 of the two sets of adaptation mechanisms 2, so that the adaptation block 202 moves toward the connecting seat The internal movement of 201 avoids the clamping and positioning action of the battery cell, and the adaptation block 202 compresses the adaptation top spring 2021 when it moves toward the inside of the connecting seat 201. When the adaptation block 202 moves, the linkage groove 2023 can drive the conversion seat 203 to move along the long side direction of the fixed retaining seat 103 inside the connecting seat 201 through the linkage rod 2031, thereby converting the movement of the adaptation block 202 along the short side direction of the fixed retaining seat 103 into the movement of the conversion seat 203 along the long side direction of the fixed retaining seat 103, and because the groove path of the linkage groove 2023 and the edge of the interfering bevel are parallel to each other, this design makes the distance data measured by the laser sensor b301 and the target plate b302 always the two interfering bevels 2022 and the battery cell respectively. The distance data between the contact points on both sides of the core, that is, the measured data is always the distance data between the intersection position of the two contact bevels 2022 and the fixed support 103, and the distance data is the length data of the battery core, and the adaptive bevel 2022 set by the tilt can adapt to the rapid measurement of battery cells of different lengths. The assembly accuracy of the battery cell inside the positioning component 1 is low. Since the effective contact range of the contact bevel 2022 and the battery cell is limited, the positioning screw 106 can be used to adjust the use position of one group of adaptation mechanisms 2 on the fixed support 103, thereby changing the effective measurement range of the adaptation component, and can adapt to the detection of battery cells with large differences in battery cell size. When the adaptation block 202 is not subject to external force,The distance measured by the laser sensor b301 and the target plate b302 is the closest spacing between the interfering bevels 2022 of the two adaptable blocks 202. When the adaptable block 202 is free from external force, the distance measured by the laser sensor b301 and the target plate b302 is defined as Xa, which is the closest spacing between the interfering bevels 2022 of the two adaptable blocks 202. When the battery cell is assembled, the battery cell can drive the adaptable block 202 to move by interfering with and squeezing the interfering bevels 2022. The adaptable block 202 can in turn drive the conversion seat 203 to move. The displacement distance of the conversion seat 203 of the left adaptable mechanism 2 is defined as Xd, and the displacement distance of the conversion seat 203 of the right adaptable mechanism 2 is defined as Xc. After the battery cell is assembled, the measured cell length data D = Xa + Xd + Xc, where Xa + Xd + Xc is the measurement data obtained by the laser sensor b301 and the target plate b302. This enables the function of quickly adapting to the battery cell installation position and measuring the battery cell length data.

Claims

1. A laser measuring device for detecting battery cell dimensions, comprising: A positioning assembly (1), wherein the positioning assembly (1) comprises a mounting seat (101), a clamping arm (102) and a fixed buttress (103), wherein the clamping arm (102) is plugged into a side surface of the mounting seat (101), and the fixed buttress (103) is fixedly mounted on a side surface of the mounting seat (101), and the mounting seat (101) and the fixed buttress (103) are parallel to each other; characterized in that the positioning assembly (1) further comprises a measuring module a, and the measuring module a is composed of a laser sensor a (104) and a target plate a (105), the laser sensor a (104) is fixedly mounted inside the clamping arm (102), and the target plate a (105) is fixedly mounted on a side surface of the fixed buttress (103); An adaption assembly, the adaption assembly consisting of an adaption mechanism (2) and a measurement module b (3), the adaption mechanism (2) comprising a connecting seat (201), an adaption block (202) and a conversion seat (203), and the adaption mechanism (2) is provided with two groups, one connecting seat (201) is fixedly mounted on the top of a fixed stop seat (103), and the other connecting seat (201) is plugged into the top of the fixed stop seat (103), the adaption block (202) is plugged into the interior of the connecting seat (201) along the short side direction of the fixed stop seat (103), and the conversion seat (203) is plugged into the interior of the connecting seat (201) along the long side direction of the fixed stop seat (103); the measurement module b (3) consists of a laser sensor b (301) and a target plate b (302), the laser sensor b (301) is fixedly mounted on the side of one of the conversion seats (203), and the target plate b (302) is fixedly mounted on the side of the other conversion seat (203).

2. A laser measuring device for detecting battery cell size according to claim 1, characterized in that: A clamping tension spring (1021) is provided on the side of the clamping arm (102), and two ends of the clamping tension spring (1021) are fixedly connected to the side of the clamping arm (102) and the inside of the connecting seat (201), respectively.

3. A laser measuring device for detecting battery cell size according to claim 2, characterized in that: An adaptive top spring (2021) is provided inside the adaptive block (202), and two ends of the adaptive top spring (2021) respectively abut against the inside of the adaptive block (202) and the inside of the connecting seat (201), and the elastic force of the adaptive top spring (2021) is smaller than the elastic force of the clamping tension spring (1021).

4. A laser measuring device for detecting battery cell size according to claim 3, characterized in that: The top of the adapting block (202) is provided with a conflicting oblique edge (2022), and the conflicting oblique edges (2022) of the two adapting blocks (202) are arranged facing each other.

5. The laser measuring device for detecting battery cell size according to claim 4, characterized in that: An inclined linkage groove (2023) is provided inside the adaption block (202), and a linkage rod (2031) is provided outside the conversion seat (203). The linkage rod (2031) is inserted into the linkage groove (2023), and the groove path of the linkage groove (2023) and the edge of the oblique side (2022) are parallel to each other.

6. The laser measuring device for detecting battery cell size according to claim 5, characterized in that: The positioning assembly (1) further includes a positioning screw (106), and the positioning screw (106) is rotatably connected to the interior of the fixed stop (103), and the positioning screw (106) is threadably engaged with a connecting seat (201) inserted on the top of the fixed stop (103).

7. The laser measuring device for detecting battery cell size according to claim 6, characterized in that: The laser sensor a (104) and the target plate a (105) are capable of measuring the distance between the clamping arm (102) and the fixed support (103).

8. The laser measuring device for detecting battery cell size according to claim 7, characterized in that: When the adapting block (202) is not resisted by an external force, the distance measured by the laser sensor b (301) and the target plate b (302) is the shortest distance between the resisting oblique edges (2022) of the two adapting blocks (202).

9. The laser measuring device for detecting battery cell size according to claim 8, characterized in that: When the adapting block (202) is not subjected to external force, the lowest position of the resisting oblique edge (2022) is in the same plane as the seat body of the fixed resisting seat (103).

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