Cylinder extrusion head axis positioning detection device and positioning method

Abstract

The application discloses a cylindrical extrusion head shaft center positioning detection device and a positioning method, relates to the technical field of power batteries, and has the advantages of simple structure, including a supporting assembly, the supporting assembly including a table top and two rotating rollers for adjusting the table top to always keep horizontal, automatic adjustment of the shaft center of the extrusion head to a horizontal state can be realized through the action of the device, the mechanical structures are combined to facilitate the installation operation of the overall structure, the application can meet the measurement needs of different cylindrical extrusion head diameters under the action of the telescopic positioning rod, compared with the deviation between the actual extrusion position of the extrusion device and the specific position of the battery cell in the extrusion process in the prior art, the application can adjust the position of the extrusion device in real time, ensure that the actual position of the extrusion head is consistent with the to-be-extruded position of the extrusion object, and thus the accuracy of the analysis and evaluation of the extrusion capacity of the battery in different directions can be improved.

Description

Technical Field

[0001] This invention relates to the field of power battery production technology, specifically a cylindrical extrusion head shaft positioning and detection device and positioning method. Background Technology

[0002] Electric vehicles primarily rely on batteries as their power source, which introduces a series of issues such as battery packs, high and low voltage wiring harnesses, and load-side protection. Due to the integrated high voltage and high energy characteristics of battery packs, their placement within the vehicle and their collision protection require special attention.

[0003] In actual production, it is necessary to conduct extrusion tests on the battery cell in different directions. By collecting data on extrusion pressure, temperature, and voltage, we can identify the direction in which the battery cell is weak in resistance to extrusion. Then, we can further analyze and determine the extrusion damage tolerance of the battery cell through different loading conditions. Secondly, we need to analyze the extrusion resistance of the module in different directions.

[0004] Therefore, in the process of analyzing the extrusion capability of battery cells, an extrusion device is required to extrude a specific position of the battery cell in order to analyze and evaluate the extrusion capability of the battery in different directions. However, there may be a deviation between the actual extrusion position of the extrusion device and the specific position of the battery cell during the extrusion process. Therefore, a detection device is needed to perform real-time positioning detection of the extrusion device. Summary of the Invention

[0005] The purpose of this invention is to provide a cylindrical extrusion head shaft center positioning and detection device, which can realize the positioning and detection of the actual position of the extrusion head shaft center, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A cylindrical extrusion head shaft center positioning and detection device includes a support assembly. The support assembly includes a table and two rotating rollers for adjusting the table to keep it level. Both rotating rollers are rotatably connected to the table. A motor for driving the rotating rollers to rotate synchronously is fixedly connected to the table. The output end of the motor is connected to the rotating rollers through a transmission assembly.

[0008] A positioning method for a cylindrical extrusion head shaft center positioning and detection device, the positioning method comprising:

[0009] Step 1: Place the support assembly on top of the extrusion head;

[0010] Step 2: The level sensor detects the level of the tabletop. If the tabletop is level, proceed to Step 3. If the tabletop is not level, the motor starts and drives the rotating roller to rotate. The level sensor then re-detects the level of the tabletop until the tabletop is level.

[0011] Step 3: The positioning cone has been pressed against the surface of the extrusion head. The distance between the laser element and the axis of the extrusion head is L = L1 + L2 + R, where L1 is the distance between the laser element and the displacement sensor, and L2 is the distance between the detection table of the displacement sensor and the extrusion head.

[0012] Step 4: Adjust the extrusion head so that the laser hits the object being extruded, based on the position of the laser component and the value of L.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention has a novel structure, and through the action of the device, the axis of the extrusion head can be automatically adjusted to a horizontal state; at the same time, the present invention is completed by the cooperation of mechanical structures, which facilitates the installation and operation of the overall structure; under the action of the telescopic positioning rod, the present invention can meet the measurement needs of different cylindrical extrusion head diameters. Compared with the prior art, where the actual extrusion position of the extrusion device deviates from the specific position of the battery cell during the extrusion process, the present invention can adjust the position of the extrusion device in real time to ensure that the actual position of the extrusion head is consistent with the position to be extruded of the object, thereby improving the accuracy of the analysis and evaluation of the extrusion capacity of the battery in different directions. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a cylindrical extrusion head shaft center positioning and detection device in practical application.

[0015] Figure 2 A schematic diagram of the overall structure of a cylindrical extrusion head shaft center positioning and detection device;

[0016] Figure 3 A schematic diagram of the specific structure of a cylindrical extrusion head shaft positioning and detection device;

[0017] Figure 4 This is a top view of a cylindrical extrusion head shaft center positioning and detection device;

[0018] Figure 5 for Figure 4 AA section diagram;

[0019] Figure 6 This is a side view of a cylindrical extrusion head shaft center positioning and detection device in practical application.

[0020] Figure 7 Dimensional diagram of the cylindrical extrusion head shaft center positioning and detection device;

[0021] In the diagram: 1-Extrusion object, 2-Extrusion head, 3-Support assembly, 4-Display screen, 5-Laser component, 6-Motor, 7-First bevel gear, 8-Small belt, 9-First pulley, 10-Large belt, 11-Data output interface, 12-Second pulley, 13-Frame, 14-Pulley shaft, 15-Rotating roller, 16-Horizontal sensor, 17-Positioning rod, 18-Positioning cone, 19-Displacement sensor, 20-Spring, 21-Third bevel gear. Detailed Implementation

[0022] 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 embodiments of the present invention, and not all embodiments. Based on the 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.

[0023] Please see Figure 1 In this embodiment of the invention, a cylindrical extrusion head shaft center positioning detection device includes a support component 3. The support component 3 includes a table and two rotating rollers 15 for adjusting the table to keep it horizontal. Both rotating rollers 15 are rotatably connected to the table. A motor 6 for driving the rotating rollers 15 to rotate synchronously is fixedly connected to the table. The output end of the motor 6 is connected to the rotating rollers 15 through a transmission component.

[0024] The transmission assembly includes a first bevel gear 7 fixedly connected to the output end of the motor 6. The first bevel gear 7 drives the adjacent second bevel gear to rotate. The second bevel gear is connected to the first pulley 9 via a small belt 8. The first pulley 9 is connected to the second pulley 12 via a large belt 10. The second pulley 12 is connected to the third bevel gear 21 via a pulley shaft 14. The second bevel gear drives the rotating roller 15 to rotate relative to the table surface, thereby adjusting the table surface to always remain horizontal on the extrusion head 2.

[0025] The motor 6 drives the second bevel gear through the first bevel gear 7, and the second bevel gear drives the small belt 8. The bevel gear and the first pulley 9 are coaxial. The small belt 8 drives the large belt 10 through the first pulley 9. Two second pulleys 12 are respectively set on both sides of the large belt 10 to realize synchronous driving of the two pulleys. The bottom ends of the two pulley shafts 14 are fixedly connected to the third bevel gear 21, and the rotation of the rotating roller 15 is realized under the action of the third bevel gear 21.

[0026] The large belt 10 is perpendicular to the belt pulley shaft 14, and the belt pulley shaft 14 is perpendicular to the rotating roller 15, so that the motor 6 drives the rotating roller 15 to rotate.

[0027] The table surface is fixedly connected to the four corners of the frame 13, and the rotating roller 15 is arranged between two adjacent frames 13 and rotates relative to the frame 13. Under the action of the frame 13, a certain working gap can be formed between the table surface and the extrusion head 2 to be tested, so that the motor 6 can drive the rotating roller 15 to rotate synchronously, so as to keep the table surface level on the extrusion head 2 to be tested.

[0028] A laser element 5 is provided on the table surface, and the laser element 5 is arranged on the symmetrical line of the frame 13. The laser element 5 projects a laser beam onto the object to be squeezed 1 for auxiliary positioning. A level sensor 16 is provided on the table surface for real-time detection of the horizontal angle of the table surface relative to the frame 13. The level sensor 16 is electrically connected to the motor 6 through a processor. When the level sensor 16 detects that the table surface is not level, the motor 6 drives the rotating roller 15 to rotate, so that the table surface adjusts itself to be level.

[0029] The bottom of the table is provided with a retractable positioning rod 17, and a positioning cone 18 is fixedly connected to the end of the positioning rod 17. The positioning cone 18 is fixedly connected to the table by a spring 20, so that the positioning cone 18 can not only be fixedly connected to the table, but also keep in contact with the extrusion head 2. At the same time, a displacement sensor 19 is provided on the bottom surface of the table directly above the positioning cone 18, which can detect the displacement change of the positioning rod 17 (i.e., the positioning cone 18) relative to the displacement sensor 19 (support component) in real time.

[0030] The motor 6, laser component 5, horizontal sensor 16, and displacement sensor 19 are all fixedly connected to the processor. Under the action of the processor, the detection and positioning of the axis of the object to be tested (extrusion head 2) can be realized, so that the extrusion head 2 and the object to be extruded 1 are as coincident as possible, thereby making the analysis and evaluation results of the extrusion capacity of the battery in different directions more accurate.

[0031] The display screen 4 with processor is installed on the top of the frame 13. It not only processes the data transmitted by the displacement sensor 19 in real time and releases the motor signal to the motor 6, but also displays the calculated distance L between the positioning point of the laser element 5 on the object to be extruded 1 and the axis point of the cylindrical extrusion head 2. Thus, the position of the extrusion head 2 can be precisely adjusted according to the positioning point and the value L, so that the actual position of the adjusted extrusion head 2 coincides with the positioning point as much as possible, thereby achieving precise extrusion of the battery module.

[0032] In actual operation, the support assembly is first placed on the extrusion head 2. The level sensor 16 on the support assembly detects whether the table is level. If the table is level, the positioning cone 18 presses the extrusion head 2. The displacement sensor 19 detects the distance between the table and the extrusion head 2. The displacement sensor 19 transmits the detected data to the processor. The processor processes the data and calculates the L value.

[0033] Specifically:

[0034] 1. Placement: Place the overall structure device of the present invention on the top of the cylindrical extrusion head 2. The two rotating rollers 15 are parallel and close to the cylindrical extrusion head 2, and the side equipped with the laser device faces the extrusion object 1;

[0035] 2. Horizontal adjustment: The horizontal sensor 16 detects the horizontal state of the tabletop. If it is not in a horizontal state, the motor 6 is started to drive the driving rotating roller 15 to rotate, and the horizontal sensor 16 re-detects the horizontal of the frame 13; The display screen 4 with a processor displays the horizontal state in real time;

[0036] 3. Displacement data processing: If it is in a horizontal state and the positioning cone 18 has pressed the surface of the cylindrical extrusion head 2, the displacement sensor 19 detects the position of the displacement positioning rod 17 to calculate the distance L2, as Figure 7 shown, the calculation formula is as follows:

[0037] L = L1 + L2 + R;

[0038] If L4 < L1 + L2, according to the geometric relationship of Δ triangle EDF:

[0039]

[0040] If L4 > L1 + L2, according to the geometric relationship of Δ triangle EDF:

[0041]

[0042] Combining the above three formulas, we can obtain:

[0043]

[0044] The display screen 4 (4) with a processor displays the calculated displacement value L on the display screen 4.

[0045] 4. Axis positioning: There are two methods. The axis of the cylindrical extrusion head 2 is aligned with the待测位置 of the extrusion object 1.

[0046] Method 1: The processor outputs information to the extrusion machine device through the data output interface 11 of the display screen 4 with a processor. The extrusion machine device automatically adjusts the position of the extrusion head relative to the battery module according to the positioning part on the extrusion object hit by the laser part;

[0047] Method 2: Manually adjust the extrusion machine device to descend by a distance L.

[0048] Both of the above methods can achieve precise positioning and extrusion of the待测位置 of the extrusion object 1 by the extrusion head 2.

[0049] This invention features a novel structure and stable operation. During use, the device automatically adjusts the axis of the extrusion head to a horizontal position. Furthermore, the coordinated action of the mechanical structures facilitates the installation and operation of the overall structure. With the aid of the retractable positioning rod, this invention can meet the measurement needs of different cylindrical extrusion head diameters. Compared to existing technologies where the actual extrusion position of the extrusion device deviates from the specific position of the battery cell during extrusion, this invention can adjust the position of the extrusion device in real time, ensuring that the actual position of the extrusion head remains consistent with the position to be extruded, thereby improving the accuracy of analyzing and evaluating the extrusion capacity of the battery in different directions.

[0050] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0051] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A cylindrical extrusion head shaft center positioning and detection device, characterized in that, The system includes a support assembly (3), which includes a platform and two rotating rollers (15) for adjusting the platform to keep it level. Both rotating rollers (15) are rotatably connected to the platform. A motor (6) for driving the rotating rollers (15) to rotate synchronously is fixedly connected to the platform. The output end of the motor is connected to the rotating rollers (15) through a transmission assembly. The transmission assembly includes a first bevel gear (7) fixedly connected to the output end of the motor (6). The first bevel gear (7) drives an adjacent second bevel gear to rotate. The second bevel gear is connected to a first pulley (9) via a small belt (8). The first pulley (9) is connected to a second pulley (12) via a large belt (10). The second pulley (12) is connected to a third bevel gear (21) via a pulley shaft (14). The second bevel gear drives the rotating rollers (15) to rotate relative to the platform. The transmission direction of the large belt (10) is perpendicular to the pulley shaft (14). The pulley shaft (14) is perpendicular to the rotating rollers (15). The platform is provided with a laser element (5), which is arranged on the symmetrical line of the frame (13); the platform is provided with a horizontal sensor (16); The bottom of the table is provided with a retractable positioning rod (17), and a positioning cone (18) is fixedly connected to the end of the positioning rod (17). The positioning cone (18) is fixedly connected to the table by a spring (20). A displacement sensor (19) is provided on the bottom surface of the table directly above the positioning cone (18). The positioning method of the device includes: Step 1: Place the support assembly (3) on top of the extrusion head; Step 2: The level sensor detects the level of the tabletop. If the tabletop is level, proceed to Step 3. If the tabletop is not level, the motor starts and drives the rotating roller to rotate. The level sensor then re-detects the level of the tabletop until the tabletop is level. Step 3: The positioning cone has been pressed against the surface of the extrusion head. The distance between the laser element and the axis of the extrusion head is L = L1 + L2 + R, where L1 is the distance between the laser element and the displacement sensor, L2 is the distance between the detection table of the displacement sensor and the extrusion head, and R is the radius of the extrusion head. Step 4: Adjust the extrusion head so that the laser hits the object being extruded, based on the position of the laser component and the value of L.

2. The cylindrical extrusion head shaft center positioning and detection device according to claim 1, characterized in that, The tabletop is fixedly connected to the four corners of the frame (13), and the rotating roller (15) is set between two adjacent frames (13) and rotates relative to the frame (13).

3. The cylindrical extrusion head shaft center positioning and detection device according to claim 1, characterized in that, The horizontal sensor (16) is electrically connected to the motor (6) via a processor.

4. The cylindrical extrusion head shaft center positioning and detection device according to claim 1, characterized in that, The motor (6), laser component (5), level sensor (16), and displacement sensor (19) are all electrically connected to the processor.

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