New energy automobile battery heat insulation plate structure and processing method thereof

Abstract

The invention relates to the technical field of new energy automobile battery heat insulation, in particular to a new energy automobile battery heat insulation plate structure and a processing method thereof.The new energy automobile battery heat insulation plate structure comprises main plates and aerogel matts.The aerogel mattsare fixedly connected to the inner sides of the main plates, the main plates are connected through connecting pieces, and a control mechanism is arranged between the connecting pieces on the two sides; a vacuum mechanism is mounted between the aerogel pads; the connecting piece comprises a first cylinder, one end of the first cylinder is fixedly connected with a guide rod, the guide rod is slidably connected into the column pipe through a telescopic spring, the other end of the column pipe is fixedly provided with a second cylinder in a welded mode, and the top end of the first cylinder and the top end of the second cylinder are both fixedly connected with a positioning plate. According to the present invention, the battery case has characteristics of high flexibility, capacity of clinging to the battery, stable support during the clinging process with the battery, excellent compression deformation resistance, and easy processing, and is produced by using the whole assembly manner.

Description

Technical Field

[0001] The present invention relates to the technical field of thermal insulation of new energy vehicle batteries, and in particular to a thermal insulation board structure of a new energy vehicle battery and a processing method thereof. Background Art

[0002] The battery insulation board for new energy vehicles is a component specially designed to isolate the heat exchange between the battery and its surrounding environment to protect the battery from working in an appropriate temperature range. Since the battery of new energy vehicles (especially electric vehicles) generates heat during the charging and discharging process, improper temperature may affect the performance, life and even safety of the battery, so the role of the battery insulation board is crucial; Materials with irregular porous structures can isolate heat transfer to a certain extent due to the presence of air or other gases in their pores, thereby reducing thermal conductivity. In addition, materials that reflect heat through their own material properties can also reduce thermal conductivity, such as gold, silver, nickel, aluminum foil, etc. Vacuum insulation materials use the internal vacuum of the material to block convection to insulate heat. Aerogel is a new type of insulation material and is also the material with the best known insulation effect. There are many insulation materials on the market, but they are not suitable for promotion in the field of new energy battery insulation. For example, porous foam insulation materials are easy to deform and cannot withstand the preload during battery installation to maintain their original shape; vacuum insulation materials require a certain structure to form a vacuum layer for insulation, which cannot be achieved between the gaps between new energy vehicle batteries; existing heat-reflecting insulation materials are mainly metal types, which cannot meet the insulation performance requirements; aerogel insulation materials have excellent performance in all aspects, but they also have insulation effects under low temperature conditions, which is contrary to the requirement of new energy batteries that they do not affect battery heat dissipation at low temperatures and do not meet the requirements. Therefore, a new energy vehicle battery insulation board structure and a processing method thereof are proposed to address the above problems. Summary of the invention

[0003] The purpose of the present invention is to provide a new energy vehicle battery insulation board structure and a processing method thereof, so as to solve the problem that there are many insulation materials on the market but are not suitable for promotion in the field of new energy battery insulation. For example, porous foam insulation materials themselves are easy to deform and cannot withstand the pre-tightening force during battery installation and maintain their original shape; vacuum insulation materials require a certain structure to form a vacuum layer for insulation, which cannot be achieved between the gaps of new energy vehicle batteries; existing heat-reflecting insulation materials are mainly metal types and cannot meet the insulation performance requirements; aerogel insulation materials have excellent performance in all aspects, but also have insulation effects under low temperature conditions, which is contrary to the requirement of new energy batteries that they do not affect battery heat dissipation at low temperatures and does not meet the requirements.

[0004] To achieve the above object, the present invention provides the following technical solutions: A new energy vehicle battery insulation board structure and a processing method thereof, comprising a mainboard and an aerogel pad, wherein the mainboard is fixedly connected to the inner side of the mainboard, the mainboards are connected by a connecting piece, a control mechanism is arranged between the connecting pieces on both sides, and a vacuum mechanism is installed between the aerogel pads; the connecting piece comprises a first cylinder, one end of the first cylinder is fixedly connected to a guide rod, the guide rod is slidably connected to the inside of a column tube through a telescopic spring, a second cylinder is welded and fixed to the other end of the column tube, the top ends of the first cylinder and the second cylinder are both fixedly connected to a positioning plate, a positioning bevel groove is provided inside the positioning plate, the control mechanism comprises a control bent rod, the top end and both sides of the bottom end of the control bent rod are fixedly connected to a bidirectional bevel block, the middle sides of the control bent rod are fixedly connected to a positioning piece, the positioning piece comprises a square plate, a central square hole is provided inside the square plate, a slide groove is provided in the middle of the central square hole, a slider is slidably connected to the inside of the central square hole through the slide groove, blind holes are provided inside both ends of the slider, and a cylindrical rod is slidably connected to the inside of the blind hole; the bidirectional bevel block is in close contact with the positioning plate through the positioning bevel groove.

[0005] As a further optimization of the present invention, there are six connecting members, and no positioning plate is arranged inside the connecting member at the upper end. The connecting members are parallel to each other, and the first cylinder, guide rod, second cylinder and column tube arranged inside any of the connecting members have the same axis.

[0006] As a further optimization of the present invention, the interior of the column tube is hollowed out, one end of the telescopic spring is fixedly connected to the guide rod, the other end of the telescopic spring is fixedly connected to the second cylinder, and the positioning plate is installed on the end surfaces of the first cylinder and the second cylinder close to the telescopic spring.

[0007] As a further optimization of the present invention, the main board includes a board body, a connecting hole is opened inside the board body, two main boards are provided, the main boards are parallel to each other, and the connecting holes arranged inside the two main boards are fixedly connected to the first cylinder and the second cylinder respectively.

[0008] As a further optimization of the present invention, the mainboard is installed between the batteries inside the battery pack, and a raised plate for positioning the mainboard is provided at the bottom of the battery pack, and the raised plate is arranged between the two mainboards.

[0009] As a further optimization of the present invention, two aerogel pads are provided, and the aerogel pads correspond to the main board one by one. The inner side of the edge of the aerogel pad is provided with circular holes for the first cylinder, the second cylinder and the cylindrical rod to pass through.

[0010] As a further optimization of the present invention, the control bent rod is U-shaped, the control bent rod is arranged between the aerogel pads, the vertical cross-section of the bidirectional inclined block is trapezoidal, four bidirectional inclined blocks are provided, and the bidirectional inclined blocks correspond one to one with the connecting pieces arranged on both sides.

[0011] As further optimized content of the present invention, the central square hole is connected to the slide groove, the vertical projection of the slider is set in a "cross" shape, the angle between the cylindrical rod and the slide groove is 90°, and there are two cylindrical rods slidably connected inside any slider, and the end of the cylindrical rod away from the center point of the slider passes through the aerogel pad and is fixedly connected to the main board, and the angle between the cylindrical rod and the main board is 90°.

[0012] As a further optimized content of the present invention, wherein: the vacuum mechanism includes a first frame plate, a second frame plate is slidably connected inside the first frame plate, and one end of the first frame plate and the second frame plate are respectively fixedly connected to the aerogel pad.

[0013] As further optimized content of the present invention, the following steps are included: Step I: Fixing between the plate body and the aerogel pad: installing the aerogel pad inside the plate body. During the installation process, it should be noted that the edge of the aerogel pad should be located inside the plate body, and during the process of fixing the aerogel pad to the plate body, the aerogel pad and the plate body are first bonded with an adhesive, and then reinforced mechanically with rivets, and the fixed connection between the aerogel pad and the plate body is achieved by combining bonding and mechanical fixation; At the same time, the first frame plate and the second frame plate are connected to the aerogel pad respectively, and the fixing is also achieved by combining bonding and mechanical fixing, and the installation positions of all the above rivets are located at the edge position. After the installation is completed, the plate body and the aerogel pad are punched at the same time, and the punching position avoids contact with the rivet to prevent damage to the stamping equipment, so as to be used for the installation and positioning of the connector and the control mechanism; Step II: Install the connector and the control mechanism between the main boards: connect the plate body fixed with the aerogel pad through the connector and the control mechanism. During the connection process, the connector is connected to the plate bodies set on both sides through the first cylinder and the second cylinder through the connection holes respectively. The first cylinder and the second cylinder are connected to the connection holes by interference fit. During the connection process, glue is applied inside the connection holes. The cylindrical rod is connected to the plate bodies on both sides at the same time. The connection between the cylindrical rod and the plate bodies on both sides is achieved by welding and fixing to realize the positioning of the control mechanism. During the above connection process, the first frame board and the second frame board are connected synchronously; Step III: Extrusion test between main boards: After the connection is completed, the main boards are squeezed to test the stability of the connection between the main boards, as well as the installation stability test of the connectors and control mechanisms. During the test, the various components inside the device that need to be displaced should be able to do so flexibly.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, the main board, connector, aerogel pad, control mechanism and vacuum mechanism are provided, so that the thermal insulation pad has high flexibility in the actual application process, and can be closely attached to the battery. At the same time, it can provide stable support in the process of being closely attached to the battery, and has excellent anti-compression deformation performance. Moreover, the whole is produced in an assembly manner, which is easy to process; 2. In the present invention, the connecting parts and control mechanism are adapted to a specific battery pack, and can be accurately positioned and installed. After installation, it can automatically fit tightly against the side of the battery pack to ensure the overall stability of the battery pack after installation. 3. In the present invention, by setting up a vacuum mechanism and an aerogel pad, by increasing the thermal insulation material between the main boards, and by using air as a medium for isolation, the overall thermal insulation effect of the thermal insulation board can be improved. In actual application, the material can also play a good role in thermal insulation, flame retardancy and support when a single battery pack fails and the temperature rises sharply, thereby ensuring the safe use of adjacent batteries. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the installation position structure of the aerogel pad of the present invention; Figure 3 For the present invention Figure 2 Schematic diagram of the structure at A in the middle; Figure 4 This is a schematic diagram of the mainboard structure of the present invention; Figure 5 This is a schematic diagram of the structure of the aerogel pad of the present invention; Figure 6 It is a schematic diagram of the control mechanism structure of the present invention; Figure 7 For the present invention Figure 6 Schematic diagram of the structure at B in the middle; Figure 8 For the present invention Figure 6 Schematic diagram of the structure at C in the middle; Fig. 9 This is a schematic diagram of the positioning member structure of the present invention; Fig.10 This is a schematic diagram of the structure of the slider of the present invention; Fig.11 It is a schematic diagram of the structure of the connecting piece of the present invention.

[0016] In the figure: 1, main board; 11, board body; 12, connection hole; 2. Connecting piece; 21. First cylinder; 22. Guide rod; 23. Second cylinder; 24. Column tube; 25. Telescopic spring; 26. Positioning plate; 27. Positioning inclined groove; 3. Aerogel pad; 4. Control mechanism; 41. Control bending rod; 42. Bidirectional inclined block; 43. Positioning member; 431. Square plate; 432. Center square hole; 433. Slide groove; 434. Sliding block; 435. Blind hole; 436. Cylindrical rod; 5. Vacuum mechanism; 51. First frame plate; 52. Second frame plate. DETAILED DESCRIPTION

[0017] See also Figure 1-11 , the present invention provides a technical solution: A new energy vehicle battery insulation board structure and a processing method thereof, comprising a main board 1 and an aerogel pad 3, wherein the inner side of the main board 1 is fixedly connected with the aerogel pad 3, the main boards 1 are connected by a connecting piece 2, a control mechanism 4 is arranged between the connecting pieces 2 on both sides, and a vacuum mechanism 5 is installed between the aerogel pads 3; the connecting piece 2 comprises a first cylinder 21, one end of the first cylinder 21 is fixedly connected with a guide rod 22, the guide rod 22 is slidably connected to the inside of a column tube 24 through a telescopic spring 25, the other end of the column tube 24 is welded and fixed with a second cylinder 23, the top ends of the first cylinder 21 and the second cylinder 23 are fixedly connected with a positioning plate 26, and the positioning plate 26 has an internal opening A positioning bevel groove 27 is provided, and the control mechanism 4 includes a control bent rod 41. The top and bottom ends of the control bent rod 41 are fixedly connected with bidirectional bevel blocks 42. The middle two sides of the control bent rod 41 are fixedly connected with positioning members 43. The positioning members 43 include a square plate 431. A central square hole 432 is provided on the inner side of the square plate 431. A slide groove 433 is provided in the middle of the central square hole 432. A slider 434 is slidably connected to the inside of the central square hole 432 through the slide groove 433. Blind holes 435 are provided on the inner sides of both ends of the slider 434. A cylindrical rod 436 is slidably connected to the inside of the blind hole 435. The bidirectional bevel block 42 is tightly attached to the positioning plate 26 through the positioning bevel groove 27.

[0018] As a technical solution for further implementation of this scheme, six connecting members 2 are provided, and no positioning plate 26 is provided inside the upper connecting member 2. The connecting members 2 are parallel to each other, and the first cylinder 21, the guide rod 22, the second cylinder 23 and the column tube 24 provided inside any connecting member 2 have the same axis. Through the above-mentioned six connecting members 2, the main boards 1 can be stably connected; As a further technical solution of this solution, the interior of the column tube 24 is hollowed out, one end of the telescopic spring 25 is fixedly connected to the guide rod 22, and the other end of the telescopic spring 25 is fixedly connected to the second cylinder 23. The positioning plate 26 is installed on the end surface of the first cylinder 21 and the second cylinder 23 close to the telescopic spring 25. Through the above arrangement, the stability of the connection between the guide rod 22 and the column tube 24 can be further improved; As a technical solution for further implementation of this solution, the main board 1 includes a plate body 11, a connecting hole 12 is opened inside the plate body 11, and two main boards 1 are provided, and the main boards 1 are parallel to each other. The connecting holes 12 arranged inside the two main boards 1 are respectively fixedly connected to the first cylinder 21 and the second cylinder 23. The connecting member 2 can be positioned by the connecting holes 12 opened inside the two plate bodies 11 as described above; As a technical solution for further implementation of this solution, the mainboard 1 is installed between the batteries inside the battery pack, and a raised plate for positioning the mainboard 1 is provided at the bottom of the battery pack. The raised plate is arranged between the two mainboards 1. Through the above arrangement, the stability and safety of the overall installation of the heat insulation board inside the battery pack can be further improved; As a technical solution for further implementation of this solution, two aerogel pads 3 are provided, and the aerogel pads 3 correspond to the main board 1 one by one. A circular hole for the first cylinder 21, the second cylinder 23 and the cylindrical rod 436 to pass through is opened on the inner side of the edge of the aerogel pad 3. Through the above arrangement, the stability of the connection between the first cylinder 21, the second cylinder 23 and the cylindrical rod 436 and the aerogel pad 3 can be improved; As a technical solution for further implementation of this solution, the control bent rod 41 is U-shaped, and the control bent rod 41 is arranged between the aerogel pads 3. The vertical section of the bidirectional inclined block 42 is trapezoidal, and four bidirectional inclined blocks 42 are provided. The bidirectional inclined blocks 42 correspond to the connecting members 2 arranged on both sides one by one. Through the above arrangement, the spacing between the first cylinder 21 and the second cylinder 23 can be controlled by the bidirectional inclined blocks 42; As a technical solution for further implementation of this solution, the central square hole 432 is connected to the slide groove 433, the vertical projection of the slider 434 is set in a "cross" shape, the angle between the cylindrical rod 436 and the slide groove 433 is 90°, and there are two cylindrical rods 436 slidably connected inside any slider 434. The end of the cylindrical rod 436 away from the center point of the slider 434 passes through the aerogel pad 3 and is fixedly connected to the main board 1. The angle between the cylindrical rod 436 and the main board 1 is 90°. Through the above arrangement, the stability of the overall structure of the insulation board is further improved; As a technical solution for further implementation of this solution, the vacuum mechanism 5 includes a first frame plate 51, a second frame plate 52 is slidably connected inside the first frame plate 51, and one end of the first frame plate 51 and the second frame plate 52 are respectively fixedly connected to the aerogel pad 3. Through the above-mentioned vacuum mechanism 5, a larger space can be provided between the two main boards 1, and the air is used as a medium for separation, thereby further improving the heat insulation effect of the heat insulation board; As a technical solution for further implementing the present solution, the following steps are included: Step I: Fixing between the plate body 11 and the aerogel pad 3: Install the aerogel pad 3 inside the plate body 11. During the installation process, it should be noted that the edge of the aerogel pad 3 should be located inside the plate body 11. During the process of fixing the aerogel pad 3 and the plate body 11, firstly bond the aerogel pad 3 and the plate body 11 with an adhesive, and then reinforce them mechanically with rivets, so as to achieve a fixed connection between the aerogel pad 3 and the plate body 11 by combining bonding and mechanical fixation; At the same time, the first frame plate 51 and the second frame plate 52 are connected to the aerogel pad 3 respectively, and the fixing is also achieved by combining bonding and mechanical fixing, and the installation positions of all the above rivets are located at the edge positions. After the installation is completed, the plate body 11 and the aerogel pad 3 are punched at the same time, and the punching position avoids contact with the rivets to prevent damage to the stamping equipment, so as to be used for the installation and positioning of the connector 2 and the control mechanism 4; Step II: Install the connector 2 and the control mechanism 4 between the main board 1: connect the connector 2 and the control mechanism 4 to the plate 11 fixed with the aerogel pad 3. During the connection process, the connector 2 is connected to the plate 11 set on both sides through the first cylinder 21 and the second cylinder 23 through the connecting holes 12 respectively. The first cylinder 21 and the second cylinder 23 are connected to the connecting hole 12 by interference fit. During the connection process, glue is applied inside the connecting hole 12. The cylindrical rod 436 is connected to the plate 11 on both sides at the same time. The connection between the cylindrical rod 436 and the plate 11 on both sides is achieved by welding and fixing, so as to realize the positioning of the control mechanism 4. During the above connection process, the first frame plate 51 and the second frame plate 52 are connected synchronously; Step III: Extrusion test between main boards 1: After the connection is completed, the main board 1 is squeezed to test the stability of the connection between the main boards 1, as well as the installation stability test of the connector 2 and the control mechanism 4. During the test, the various components inside the device that need to be displaced should be able to be moved flexibly.

[0019] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. The above is only a preferred implementation of the present invention. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the protection scope of the present invention.

Claims

1. A new energy vehicle battery heat insulation board structure, comprising a main board (1) and an aerogel pad (3), characterized in that: An aerogel pad (3) is fixedly connected to the inner side of the main board (1), the main boards (1) are connected via connecting pieces (2), a control mechanism (4) is arranged between the connecting pieces (2) on both sides, and a vacuum mechanism (5) is installed between the aerogel pads (3); The connecting member (2) comprises a first cylinder (21), one end of the first cylinder (21) is fixedly connected to a guide rod (22), the guide rod (22) is slidably connected to the inside of a column tube (24) via a telescopic spring (25), the other end of the column tube (24) is welded and fixed to a second cylinder (23), the top ends of the first cylinder (21) and the second cylinder (23) are both fixedly connected to a positioning plate (26), the positioning plate (26) is provided with a positioning inclined groove (27), and the control mechanism (4) comprises a control curved rod (41), the top end and the bottom end of the control curved rod (41) are The control bending rod (41) is fixedly connected with a bidirectional inclined block (42) on both sides, and the middle two sides of the control bending rod (41) are fixedly connected with a positioning member (43), and the positioning member (43) comprises a square plate (431), and a central square hole (432) is opened on the inner side of the square plate (431), and a sliding groove (433) is opened in the middle of the central square hole (432), and a sliding block (434) is slidably connected to the inside of the central square hole (432) through the sliding groove (433), and blind holes (435) are opened on the inner sides of both ends of the sliding block (434), and a cylindrical rod (436) is slidably connected to the inside of the blind hole (435); The bidirectional inclined block (42) is tightly attached to the positioning plate (26) via the positioning inclined groove (27).

2. A new energy vehicle battery heat insulation board structure according to claim 1, characterized in that: The connecting members (2) are provided with six, and are arranged at the upper end of the connecting member (2) without a positioning plate (26). The connecting members (2) are parallel to each other, and the first cylinder (21), the guide rod (22), the second cylinder (23), and the column tube (24) arranged inside any of the connecting members (2) have the same axis.

3. A new energy vehicle battery heat insulation board structure according to claim 1, characterized in that: The column tube (24) is hollowed out inside, one end of the telescopic spring (25) is fixedly connected to the guide rod (22), the other end of the telescopic spring (25) is fixedly connected to the second cylinder (23), and the positioning plate (26) is mounted on the end surfaces of the first cylinder (21) and the second cylinder (23) close to the telescopic spring (25).

4. A new energy vehicle battery heat insulation board structure according to claim 1, characterized in that: The main board (1) comprises a board body (11), a connection hole (12) is provided inside the board body (11), two main boards (1) are provided, the main boards (1) are parallel to each other, and the connection holes (12) provided inside the two main boards (1) are respectively fixedly connected to the first cylinder (21) and the second cylinder (23).

5. A new energy vehicle battery heat insulation board structure according to claim 1, characterized in that: The main board (1) is installed between the batteries inside the battery pack, and a raised plate for positioning the main board (1) is provided at the bottom of the battery pack, wherein the raised plate is arranged between two main boards (1).

6. A new energy vehicle battery heat insulation board structure according to claim 1, characterized in that: Two aerogel pads (3) are provided, and the aerogel pads (3) correspond to the main board (1) one by one. A circular hole for the first cylinder (21), the second cylinder (23), and the cylindrical rod (436) to pass through is provided on the inner side of the edge of the aerogel pad (3).

7. A new energy vehicle battery heat insulation board structure according to claim 1, characterized in that: The control curved rod (41) is U-shaped and is arranged between the aerogel pads (3). The vertical cross-section of the bidirectional inclined block (42) is trapezoidal. Four bidirectional inclined blocks (42) are provided. The bidirectional inclined blocks (42) correspond one to one with the connecting pieces (2) arranged on both sides.

8. A new energy vehicle battery heat insulation board structure according to claim 1, characterized in that: The central square hole (432) is connected to the slide groove (433), the vertical projection of the slider (434) is arranged in a "cross" shape, the angle formed between the cylindrical rod (436) and the slide groove (433) is 90°, and two cylindrical rods (436) are provided for sliding connection inside any slider (434), one end of the cylindrical rod (436) away from the center point of the slider (434) passes through the aerogel pad (3) and is fixedly connected to the main board (1), and the angle formed between the cylindrical rod (436) and the main board (1) is 90°.

9. A new energy vehicle battery heat insulation board structure according to claim 1, characterized in that: The vacuum mechanism (5) comprises a first frame plate (51), a second frame plate (52) being slidably connected inside the first frame plate (51), and one end of the first frame plate (51) and the second frame plate (52) being fixedly connected to the aerogel pad (3) respectively.

10. A processing method for a new energy vehicle battery heat insulation board structure according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step I: Fixing the plate body (11) and the aerogel pad (3): The aerogel pad (3) is installed inside the plate body (11). During the installation process, it should be noted that the edge of the aerogel pad (3) should be located inside the plate body (11). During the process of fixing the aerogel pad (3) and the plate body (11), the aerogel pad (3) and the plate body (11) are firstly bonded with an adhesive and then mechanically reinforced with rivets. The aerogel pad (3) and the plate body (11) are fixedly connected by a combination of bonding and mechanical fixing. At the same time, the first frame plate (51) and the second frame plate (52) are respectively connected to the aerogel pad (3), and the fixation is also achieved by combining bonding and mechanical fixation, and the installation positions of all the rivets are located at the edge positions. After the installation is completed, the plate body (11) and the aerogel pad (3) are punched at the same time, and the punching positions avoid contact with the rivets to prevent damage to the punching equipment, so as to be used for the installation and positioning of the connecting member (2) and the control mechanism (4); Step II: Install the connecting member (2) and the control mechanism (4) between the main board (1): connect the connecting member (2) and the control mechanism (4) to the plate body (11) fixed with the aerogel pad (3). During the connection process, the connecting member (2) is connected to the plate bodies (11) arranged on both sides through the first cylinder (21) and the second cylinder (23) through the connecting holes (12). The first cylinder (21) and the second cylinder (23) are connected to the connecting holes (12) by means of interference fit. During the connection process, glue is applied inside the connecting holes (12). The cylindrical rod (436) is connected to the plate bodies (11) on both sides at the same time. The connection between the cylindrical rod (436) and the plate bodies (11) on both sides is achieved by welding and fixing, so as to achieve the positioning of the control mechanism (4). During the above connection process, the first frame plate (51) and the second frame plate (52) are connected synchronously; Step III: Extrusion test between the main boards (1): After the connection is completed, the main boards (1) are squeezed to test the stability of the connection between the main boards (1) and the installation stability of the connector (2) and the control mechanism (4). During the test, the various components inside the device that need to be displaced should be able to be moved flexibly.

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