A laser measuring device for detecting battery cell size

Abstract

The present invention provides a laser measuring device for detecting the size of a battery cell, which relates to the field of battery cell size detection and comprises: an adapting component, wherein the adapting component is composed of an adapting mechanism and a measuring module b. 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 the measuring modules 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 device is flexible and convenient to use, has low requirements for assembly and placement accuracy during battery cell detection, and can ensure extremely high measurement accuracy. The device solves the problem that a laser measuring device for battery cell detection has high requirements for the placement position accuracy of the battery cell, 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.

Description

Technical Field

[0001] This invention relates to the field of battery cell size detection technology, and in particular to a laser measuring device for battery cell size detection. Background Technology

[0002] The battery cell is the core unit of a battery that enables the storage and release of electrical energy. It consists of positive and negative electrodes, an electrolyte, and a separator. Its performance directly affects battery capacity, lifespan, and other indicators. The size parameters of the battery cell (such as length, width, height, and diameter) are key factors determining whether it can be adapted to various devices (such as consumer electronics and electric vehicle battery packs). Size deviations can lead to poor assembly, abnormal structural stress, or reduced space utilization, thereby affecting the overall performance and safety of the battery. Therefore, measuring the size of the battery cell is a necessary step to ensure the quality of battery cell production and to ensure that it matches the application scenario. For example, patent application number CN202510060245.1 discloses a battery cell size measurement system and method. The system includes: a carrier platform, a measuring mechanism, and a control system. The measuring device includes a first laser device and a second laser device, which are arranged on the measuring device in a manner that they are directed relative to each other. A carrier platform is used to move the battery cell to be measured relative to the measuring device. The first laser device emits a first laser beam towards the battery cell to be measured. The second laser device emits a second laser beam towards the battery cell to be measured. A controller is used to collect a first measurement value when the battery cell to be measured moves relative to the first laser device and a second measurement value when it moves relative to the second laser device, and calculates the battery cell size based on the first and second measurement values. This avoids the problem of scratching caused by direct contact with the battery cell, thereby improving the detection speed and cycle time, and reducing the detection cost.

[0003] Existing laser measurement devices for battery cell testing have the following drawbacks:

[0004] 1. The test requires high precision in the placement of the battery cell. If the battery cell is offset, tilted, or has an irregular posture, the incident angle of the laser beam is likely to deviate from the preset measurement path. This will cause systematic errors in the collected battery cell size parameters (such as length, width, height, diameter, etc.), significantly reducing the accuracy of the measurement results. Operators need to repeatedly adjust the position of the battery cell to meet the measurement requirements, making the operation complicated.

[0005] 2. It can only test one dimension parameter at a time during testing, and cannot measure the length and width of the battery cell at the same time, resulting in low testing efficiency. Summary of the Invention

[0006] This invention relates to a laser measuring device for detecting the size of battery cells. It comprises a positioning component and an adaptation component. The positioning component measures the width of the battery cell, while the adaptation component measures its length. After the battery cell is assembled into the positioning component, both the length and width parameters can be measured simultaneously, simplifying the operation process and improving detection efficiency. Furthermore, measurement modules a and b do not directly act on the outside of the battery cell for detection; instead, they measure the distance between the clamping arm and the fixed support, and the variable distance between the two adaptation mechanisms. This device is flexible and convenient to use, requires lower assembly and placement precision during battery cell testing, and ensures extremely high measurement accuracy. It is highly flexible, accurate, and practical.

[0007] This invention provides a laser measuring device for detecting the size of battery cells, specifically including: a positioning assembly, which includes a mounting base, a clamping arm, and a fixed abutment. The clamping arm is inserted into the side of the mounting base, and the fixed abutment is fixedly installed on the side of the mounting base, with the clamping arm and the fixed abutment being parallel to each other; the positioning assembly also includes a measuring module a, which consists of a laser sensor a and a target plate a. The laser sensor a is fixedly installed inside the clamping arm, and the target plate a is fixedly installed on the side of the fixed abutment.

[0008] The adaptation component comprises 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 in two sets. One connecting seat is fixedly installed on the top of the fixed abutment, and the other connecting seat is inserted into the top of the fixed abutment. The adaptation block is inserted into the interior of the connecting seat along the short side of the fixed abutment, and the conversion seat is inserted into the interior of the connecting seat along the long side of the fixed abutment. The measurement module b comprises 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.

[0009] Furthermore, the clamping arm is provided with a clamping tension spring on its side, and the two ends of the clamping tension spring are respectively fixedly connected to the side of the clamping arm and the inside of the connecting seat.

[0010] Furthermore, the adapting block is provided with an adapting top spring inside, and the two ends of the adapting top spring abut against the inside of the adapting block and the inside of the connecting seat, respectively. The elastic force of the adapting top spring is less than the elastic force of the clamping tension spring.

[0011] Furthermore, the top of the adapting block is provided with an abutting bevel, and the abutting bevels of the two adapting blocks are arranged facing each other.

[0012] Furthermore, the interior of the adaptation block is provided with an inclined linkage groove, and the exterior of the conversion seat is provided with a linkage rod. The linkage rod is inserted into the interior of the linkage groove, and the groove path of the linkage groove and the edge of the contacting inclined side are parallel to each other.

[0013] Furthermore, the positioning assembly also includes a positioning screw, which is rotatably connected inside the fixed abutment and threadedly engaged with a connecting seat inserted into the top of the fixed abutment.

[0014] Furthermore, the laser sensor a and the target plate a are capable of measuring the distance between the clamping arm and the fixed abutment.

[0015] Furthermore, when the adapting block is not subjected to external force, the distance measured by the laser sensor b and the target plate b is the closest distance between the contacting hypotenuses of the two adapting blocks.

[0016] Furthermore, when the adaptive block is not subjected to external force, the lowest position of the contacting hypotenuse is in the same plane as the fixed abutment body.

[0017] This invention provides a laser measuring device for detecting the size of battery cells, which has the following advantages:

[0018] 1. The positioning component can measure the width of the battery cell, and the adaptation component can measure the length of the battery cell. After the battery cell is assembled into the positioning component, the length and width parameters of the battery cell can be measured simultaneously, which simplifies the operation process and improves the detection efficiency.

[0019] 2. Measurement modules a and b do not directly act on the outside of the battery cell for testing. Instead, they measure the distance between the clamping arm and the fixed base, as well as the variable distance between the two sets of adaptation mechanisms. This makes the device flexible and convenient to use, with lower requirements for assembly and placement accuracy during battery cell testing, while ensuring extremely high measurement accuracy. This improves the flexibility, adaptability, and practicality of the device.

[0020] 3. Automatic positioning and high-precision measurement: The clamping arm and fixed base of the positioning component, together with the clamping spring, realize the automatic centering and positioning of the battery cell. The laser sensor a and the target plate a directly measure the width of the battery cell, eliminating the error of manual placement and improving the measurement accuracy.

[0021] 4. Synchronous measurement of length and width: The design of the component utilizes the anti-sloping edge and linkage groove to convert the clamping force in the width direction of the cell into the displacement in the length direction. The length of the cell is measured synchronously by the laser sensor b and the target plate b. The length and width data can be obtained in one clamping, simplifying the inspection process.

[0022] 5. Adaptive adjustment function: The adaptive top spring enables the adaptive block to automatically adapt to cells of different sizes. The cooperation between the linkage slot and the linkage rod ensures that the measurement data always corresponds to the actual length of the cell, reducing the accuracy requirements for the placement of the cell and making the operation more flexible.

[0023] 6. Adjustable range design: The positioning screw can be adjusted to adapt to the initial position of the mechanism, expanding the measurement range of the device for different sized cells, enhancing versatility, and making it suitable for multi-specification cell production scenarios.

[0024] 7. Simplified data processing: By using a preset reference distance Xa and displacement compensation mechanism (Xd+Xc), the measured value of the laser sensor b is directly converted into the cell length D, eliminating the need for complex algorithms and improving detection efficiency. Attached Figure Description

[0025] 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.

[0026] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0027] In the attached diagram:

[0028] Figure 1 A schematic diagram of the structure of the present invention is shown.

[0029] Figure 2 The present invention is shown. Figure 1 A schematic diagram of the structure from the side.

[0030] Figure 3 A schematic diagram of the internal structure of the positioning component of the present invention in the reset state is shown.

[0031] Figure 4 The present invention is shown. Figure 3 Enlarged structural diagram of part A in the middle.

[0032] Figure 5 A schematic diagram of the disassembled structure of the adaptive mechanism and measurement module b of the present invention is shown.

[0033] Figure 6 A schematic diagram of the disassembled positioning component of the present invention is shown.

[0034] Figure 7 This diagram illustrates the internal structure of the battery cell when measuring cell size data (the cell is assembled inside the positioning assembly).

[0035] Figure 8 The present invention is shown. Figure 7 Enlarged structural diagram of part B in the middle.

[0036] Figure 9 This invention has been modified. Figure 3 A schematic diagram of the internal structure of the adaptive component after it has reached its effective range.

[0037] Figure 10 The present invention is shown. Figure 3A schematic diagram of the measurement data from the measurement module b.

[0038] Figure 11 The present invention is shown. Figure 7 A schematic diagram of the measurement data from the measurement module b.

[0039] List of reference numerals

[0040] 1. Positioning assembly; 101. Mounting base; 102. Clamping arm; 1021. Clamping tension spring; 103. Fixed abutment; 104. Laser sensor a; 105. Target plate a; 106. Positioning screw;

[0041] 2. Adaptive mechanism; 201. Connecting seat; 202. Adaptive block; 2021. Adaptive top spring; 2022. Abutting bevel; 2023. Linkage groove; 203. Converter seat; 2031. Linkage rod;

[0042] 3. Measurement module b; 301. Laser sensor b; 302. Target plate b.

[0043] It should be noted that Xa is the closest distance between the contacting hypotenuses of the two adapting blocks when the adapting blocks are not contacted by external force, and Xd and Xc are the displacement distances of the switching base after the two sets of adapting components are contacted by the outer wall of the battery cell. Detailed Implementation

[0044] 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.

[0045] Please refer to Figures 1 to 11 Example 1:

[0046] This invention proposes a laser measuring device for detecting the size of battery cells, comprising: a positioning component 1, which includes a mounting base 101, a clamping arm 102, and a fixed abutment 103. The clamping arm 102 is inserted into the side of the mounting base 101, and the fixed abutment 103 is fixedly installed on the side of the mounting base 101. The clamping arm 102 and the fixed abutment 103 are parallel to each other. The positioning component 1 also includes a measuring module a, which consists of a laser sensor a104 and a target plate a105. The laser sensor a104 is fixedly installed inside the clamping arm 102, and the target plate a105 is fixedly installed on the side of the fixed abutment 103.

[0047] 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. The adaptation mechanism 2 has two sets. One connecting seat 201 is fixedly installed on the top of the fixed abutment 103, and the other connecting seat 201 is inserted into the top of the fixed abutment 103. The adaptation block 202 is inserted into the inside of the connecting seat 201 along the short side of the fixed abutment 103, and the conversion seat 203 is inserted into the inside of the connecting seat 201 along the long side of the fixed abutment 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.

[0048] The clamping arm 102 has a clamping spring 1021 on its side, and the two ends of the clamping 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 positioning component 1 can be used to measure the width of the battery cell. The width measurement is achieved by pulling the clamping arm 102 to position the battery cell. After pulling the clamping arm 102, it can move away from the fixed seat 103 to increase the distance between them and lengthen the clamping spring 1021, facilitating the insertion of the battery cell. After the battery cell is placed between the clamping arm 102 and the fixed abutment 103, the clamping arm 102 is released. Under the action of the clamping tension spring 1021, the clamping arm 102 can automatically move towards the fixed abutment 103, thereby clamping and positioning the battery cell inside the positioning component 1 for measurement. The two sides of the battery cell abut against the sides of the clamping arm 102 and the fixed abutment 103 respectively. At this time, the laser sensor a104 and the target plate a105 work together to measure the distance data between the clamping arm 102 and the fixed abutment 103, that is, the width data of the battery cell, which is convenient and fast.

[0049] The adapting block 202 has an internal adapting top spring 2021, with its two ends abutting against the interior of the adapting block 202 and the interior of the connecting seat 201, respectively. The elastic force of the adapting top spring 2021 is less than that of the clamping tension spring 1021. In use, after the battery cell is positioned and installed inside the positioning assembly 1, the adapting assembly can simultaneously measure the length data of the battery cell, enabling simultaneous measurement of both the length and width of the battery cell during assembly. This simplifies the testing process and improves testing efficiency. The top of the adapting block 202 has an abutting bevel 2022, and the two adapting... The opposing inclined edges 2022 of the blocks 202 are arranged facing each other. After the battery cell is positioned and installed inside the positioning assembly 1, due to the clamping and positioning action of the clamping arm 102 and the fixed abutment 103, the outer wall of the battery cell will abut and press against the opposing inclined edges 2022 of the two sets of adapting mechanisms 2, causing the adapting blocks 202 to move into the connecting seat 201 to avoid the clamping and positioning action of the battery cell. When the adapting blocks 202 move into the connecting seat 201, they will compress the adapting top spring 2021. The interior of the adapting blocks 202 is provided with an inclined linkage groove 2023, and the exterior of the conversion seat 203 is provided with... Linkage rod 2031 is inserted into the interior of linkage groove 2023. The groove path of linkage groove 2023 and the edge of contacting inclined side 2022 are parallel to each other. When the adapting block 202 moves, linkage groove 2023 can drive conversion seat 203 to move along the long side of fixed abutment 103 inside connecting seat 201 via linkage rod 2031. This converts the movement of adapting block 202 along the short side of fixed abutment 103 into the movement of conversion seat 203 along the long side of fixed abutment 103. Furthermore, due to the groove path of linkage groove 2023 and the edge of contacting inclined side 2022, the movement of adapting block 2022 along the short side of fixed abutment 103 is converted into the movement of conversion seat 203 along the long side of fixed abutment 103. The edges of the contacting bevels are parallel to each other. This design ensures that the distance data measured by the laser sensor b301 and the target plate b302 is always the distance data between the contact points of the two contacting bevels 2022 and the two sides of the battery cell. That is, the measured data is always the distance data between the intersection of the two contacting bevels 2022 and the fixed base 103. This distance data is the length data of the battery cell. Moreover, the inclined adaptation bevels 2022 can be adapted to the rapid measurement of battery cells of different lengths. The assembly accuracy of the battery cell inside the positioning component 1 is relatively low, and it is convenient and flexible to use.

[0050] The positioning component 1 also includes a positioning screw 106, which is rotatably connected inside the fixed abutment 103. The positioning screw 106 is threadedly engaged with the connecting seat 201 inserted into the top of the fixed abutment 103. In use, since the effective contact range between the contacting inclined edge 2022 and the battery cell is limited, the positioning screw 106 can adjust the position of one set of adaptation mechanisms 2 on the fixed abutment 103, thereby changing the effective measurement range of the adaptation component. It can be used to test battery cells with large differences in battery cell size, and has strong adaptability.

[0051] Among them, laser sensor a104 and target plate a105 can measure the distance between clamping arm 102 and fixed abutment 103. When the adapting block 202 is not subjected to external force, the distance measured by laser sensor b301 and target plate b302 is the closest distance between the contacting hypotenuses 2022 of the two adapting blocks 202. When the adapting block 202 is not subjected to external force, the lowest position of the contacting hypotenuse 2022 is in the same plane as the fixed abutment 103. In use, when the adapting block 202 is not subjected to external force, the distance measured by laser sensor b301 and target plate b302 is the closest distance between the contacting hypotenuses 2022 of the two adapting blocks 202. Here, when the adapting block 202 is not subjected to external force, the distance measured by laser sensor b301 and target plate b305 is the closest distance between the contacting hypotenuses 2022 of the two adapting blocks 202. The distance measured by 302 is defined as the closest distance between the contacting inclined edges 2022 of the two adapting blocks 202, which is defined as Xa. When the battery cell is assembled, the battery cell can drive the adapting block 202 to move by contacting and squeezing the contacting inclined edges 2022. The adapting block 202 can then drive the conversion seat 203 to move. The displacement distance of the conversion seat 203 of the left adapting mechanism 2 is defined as Xd, and the displacement distance of the conversion seat 203 of the right adapting mechanism 2 is defined as Xc. Thus, after the battery cell is assembled, the measured battery cell length data D = Xa + Xd + Xc, and Xa + Xd + Xc are the measurement data obtained by the laser sensor b301 and the target plate b302, thereby realizing the functions of quickly adapting the battery cell installation position and measuring the battery cell length data.

[0052] The specific usage and function of this embodiment: In this invention, the width data of the battery cell can be measured through the positioning component 1. The width measurement operation is achieved by positioning the battery cell by pulling the clamping arm 102. After pulling the clamping arm 102, the clamping arm 102 can move away from the fixed abutment 103 to increase the distance between them and lengthen the clamping spring 1021, facilitating the placement of the battery cell. After the battery cell is placed between the clamping arm 102 and the fixed abutment 103, releasing the clamping arm 102 allows it to automatically move towards the fixed abutment 103 under the action of the clamping spring 1021, thereby clamping and positioning the battery cell inside the positioning component 1 for measurement. The sides of the clamping arm 102 and the fixed abutment 103 respectively abut against the sides of the clamping arm 102 and the fixed abutment 103. At this time, the laser sensor a104 and the target plate a105 work together to measure the distance between the clamping arm 102 and the fixed abutment 103, i.e., the width of the battery cell. After the battery cell is positioned and installed inside the positioning assembly 1, the adapting assembly can simultaneously measure the length of the battery cell, enabling simultaneous measurement of both length and width. This simplifies the inspection process and improves inspection efficiency. After the battery cell is positioned and installed inside the positioning assembly 1, due to the clamping and positioning action of the clamping arm 102 and the fixed abutment 103, the outer wall of the battery cell abuts against and presses against the abutting inclined edges 2022 of the two sets of adapting mechanisms 2, causing the adapting block 202 to move towards the connecting seat. The internal movement of 201 avoids the clamping and positioning action of the battery cell, and when the adapting block 202 moves into the interior of the connecting seat 201, it will compress the adapting top spring 2021. When the adapting block 202 moves, the linkage groove 2023 can drive the conversion seat 203 to move along the long side of the fixed abutment 103 inside the connecting seat 201 through the linkage rod 2031. This converts the movement of the adapting block 202 along the short side of the fixed abutment 103 into the movement of the conversion seat 203 along the long side of the fixed abutment 103. Since the groove path of the linkage groove 2023 and the edge of the contacting inclined edge are parallel to each other, this design ensures that the distance data measured by the laser sensor b301 and the target plate b302 is always that the two contacting inclined edges 2022 are respectively with the battery cell. The distance between the contact points on both sides of the core, i.e., the measured data, is always the distance between the intersection of the two contacting inclined edges 2022 and the fixed abutment 103. This distance data is the length data of the battery cell. The inclined adaptation edge 2022 can accommodate rapid measurement of batteries of different lengths. However, the assembly accuracy of the battery cell inside the positioning assembly 1 is relatively low. Because the effective contact range between the contacting inclined edge 2022 and the battery cell is limited, the positioning screw 106 can adjust the position of one set of adaptation mechanisms 2 on the fixed abutment 103, thereby changing the effective measurement range of the adaptation assembly. This allows for the testing of batteries with large size differences. When the adaptation block 202 is not subjected to external force...The distance measured by laser sensor b301 and target plate b302 is the closest distance between the contacting hypotenuses 2022 of the two adapting blocks 202. Here, when the adapting blocks 202 are not subjected to external force, the distance measured by laser sensor b301 and target plate b302, which is the closest distance between the contacting hypotenuses 2022 of the two adapting blocks 202, is defined as Xa. When the battery cell is assembled, the battery cell can move the adapting blocks 202 by contacting and pressing the contacting hypotenuses 2022. The adapting blocks 202 can then move the conversion seat 203. The displacement distance of the conversion seat 203 of the left adapting mechanism 2 is defined as Xd, and the displacement distance of the conversion seat 203 of the right adapting mechanism 2 is defined as Xc. Therefore, after the battery cell is assembled, the measured battery cell length data D = Xa + Xd + Xc. Xa + Xd + Xc is the measurement data obtained by laser sensor b301 and target plate b302, thus realizing the functions of quickly adapting the battery cell installation position and measuring the battery cell length data.

Claims

1. A laser measuring device for detecting the size of battery cells, comprising: A positioning component (1) includes a mounting base (101), a clamping arm (102), and a fixed abutment (103). The clamping arm (102) is inserted into the side of the mounting base (101), and the fixed abutment (103) is fixedly installed on the side of the mounting base (101). The clamping arm (102) and the fixed abutment (103) are parallel to each other. The positioning component (1) further includes a measurement module a, which is composed of a laser sensor a (104) and a target plate a (105). The laser sensor a (104) is fixedly installed inside the clamping arm (102), and the target plate a (105) is fixedly installed on the side of the fixed abutment (103). The adaptation component consists of an adaptation mechanism (2) and a measurement module b (3). The adaptation mechanism (2) includes a connecting seat (201), an adaptation block (202), and a conversion seat (203). The adaptation mechanism (2) has two sets. One connecting seat (201) is fixedly installed on the top of the fixed abutment (103), and the other connecting seat (201) is inserted into the top of the fixed abutment (103). The adaptation block (202) is inserted into the inside of the connecting seat (201) along the short side of the fixed abutment (103), and the conversion seat (203) is inserted into the inside of the connecting seat (201) along the long side of the fixed abutment (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 installed on the side of one of the conversion seats (203), and the target plate b (302) is fixedly installed on the side of the other conversion seat (203). The top of the adapting block (202) is provided with abutting inclined edge (2022), and the abutting inclined edges (2022) of the two adapting blocks (202) are arranged facing each other; The adaptation block (202) has an inclined linkage groove (2023) inside, and the conversion seat (203) has a linkage rod (2031) outside. The linkage rod (2031) is inserted into the interior of the linkage groove (2023). The groove path of the linkage groove (2023) and the edge of the contacting inclined side (2022) are parallel to each other. The battery cell is clamped and positioned inside the positioning assembly (1) for measurement. The two sides of the battery cell abut against the sides of the clamping arm (102) and the fixed abutment (103) respectively. At this time, the laser sensor a (104) and the target plate a (105) can measure the distance data between the clamping arm (102) and the fixed abutment (103), that is, the width data of the battery cell. After the battery cell is positioned and installed inside the positioning assembly (1), due to the clamping and positioning action of the clamping arm (102) and the fixed abutment (103), the outer wall of the battery cell will abut against and squeeze the abutting inclined edge (2022) of the two sets of adaptation mechanisms (2), causing the adaptation block (202) to move into the interior of the connecting seat (201) to avoid the clamping and positioning action of the battery cell. When the adaptation block (202) moves, the linkage groove (2023) can drive the conversion seat (203) to move along the long side of the fixed abutment (103) inside the connecting seat (201) through the linkage rod (2031), thereby positioning the adaptation block (202). The movement along the short side of the fixed abutment (103) is converted into the movement of the conversion seat (203) along the long side of the fixed abutment (103). Since the groove path of the linkage groove (2023) and the edge of the contacting slope are parallel to each other, the distance data measured by the laser sensor b (301) and the target plate b (302) is always the distance data between the two contacting slopes (2022) and the contact points on both sides of the cell. That is, the measured data is always the distance data between the intersection of the two contacting slopes (2022) and the fixed abutment (103). This distance data is the length data of the cell.

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

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

4. The laser measuring device for detecting battery cell size according to claim 3, characterized in that, The positioning component (1) also includes a positioning screw (106), which is rotatably connected inside the fixed abutment (103). The positioning screw (106) is threadedly engaged with the connecting seat (201) inserted into the top of the fixed abutment (103).

5. The laser measuring device for detecting battery cell size according to claim 4, characterized in that, The laser sensor a (104) and target plate a (105) are capable of measuring the distance between the clamping arm (102) and the fixed abutment (103).

6. The laser measuring device for detecting battery cell size according to claim 5, characterized in that, When the adaptation block (202) is not subjected to external force, the distance measured by the laser sensor b (301) and the target plate b (302) is the closest distance between the contacting hypotenuses (2022) of the two adaptation blocks (202).

7. The laser measuring device for detecting battery cell size according to claim 6, characterized in that, When the adaptation block (202) is not resisted by external force, the lowest position of the resisting inclined edge (2022) is in the same plane as the fixed abutment (103) seat.

Images