A battery pre-welding fixture and system

Abstract

The present application relates to a battery pre-welding jig and system, wherein the battery pre-welding jig comprises: a support seat, which is provided with a circulation channel for the circulation jig to pass through; a plurality of lifting members, wherein the plurality of lifting members are connected to the support seat, the driving end of the lifting member extends to the circulation channel and is suitable for connecting to the circulation jig, and the plurality of lifting members are suitable for respectively lifting a plurality of different positions of the circulation jig. The present application lifts different positions of the circulation jig respectively through a plurality of lifting members to ensure that the battery on the circulation jig is in a horizontal position, so that when welding the top cover and the shell of the battery, the actual welding position of the battery is consistent with the preset welding position, thereby ensuring the pre-welding quality of the battery.

Description

Technical Field

[0001] The present application relates to the technical field of battery processing equipment, and in particular to a battery pre-welding fixture and system. Background Art

[0002] As the country introduces relevant policies to promote the new energy vehicle industry, the electric vehicle industry has achieved unprecedented rapid development. Power batteries are the power source of electric vehicles and one of their core components. Power batteries have developed particularly rapidly in recent years.

[0003] During battery assembly, the battery cells are processed in different workstations in sequence along with the flow jig. After the battery cells are welded to the top cover, they are placed in the shell, which is pressed onto the battery cells. The top cover and the shell are then pre-welded to complete the initial assembly of the battery.

[0004] In the related art, after the battery cell is put into the shell, it is fixed on the circulation jig. The battery cell and the shell are moved to the welding position along the circulation jig, and then the top cover and the shell are welded by a laser welding machine to achieve the fixation of the shell and the top cover.

[0005] However, for longer batteries, the length of the flow jig will also be longer. The flow jig is easily affected by the flatness of the wire body, and the height of the flow jig at different positions is easily inconsistent, causing the battery on the flow jig to be tilted. However, when welding the top cover and the shell, the welding height is difficult to adaptively change with the height of the top cover and the shell. Therefore, due to the tilted placement of the battery, there is a large difference between the actual welding position of the top cover and the shell and the pre-designed welding position, which can easily have an adverse effect on the welding quality of the top cover and the shell. Summary of the invention

[0006] The embodiments of the present application provide a battery pre-welding fixture and system to solve the technical problem in the related art that due to the tilted placement of the battery, the actual welding position of the top cover and the shell is significantly different from the pre-designed welding position, which easily has an adverse effect on the welding quality of the top cover and the shell.

[0007] In a first aspect, a battery pre-welding jig is provided, comprising:

[0008] A support seat, which is provided with a circulation channel for the circulation jig to pass through;

[0009] Multiple lifting members, all of which are connected to the support seat, the driving ends of the lifting members extend to the flow channel and are suitable for connecting to the flow fixture, and the multiple lifting members are suitable for respectively lifting multiple different positions of the flow fixture.

[0010] In some embodiments, the plurality of lifting members are distributed along the side lines of a rectangle, and the driving ends of the lifting members are suitable for connecting to the edges of the flow fixture.

[0011] In some embodiments, the support base further includes a positioning surface, and the lifting member is suitable for driving the battery to press against the positioning surface.

[0012] In some embodiments, the battery pre-welding jig also includes a detection component, which includes a plurality of distance measuring components, wherein the plurality of distance measuring components are all connected to the support seat, and the detection ends of the plurality of distance measuring components extend into the flow channel to detect the height of different positions of the flow jig or the battery.

[0013] In some embodiments, the support seat is further provided with a welding channel for the battery to pass through, and the welding channel is connected to the circulation channel.

[0014] In some embodiments, a plurality of welding openings arranged at intervals are formed on the circumferential side surface of the welding channel.

[0015] In some embodiments, the battery pre-welding jig further includes a cover body, the cover body includes a shielding surface, the cover body is disposed on the welding channel, and the shielding surface is suitable for covering the top surface of the battery.

[0016] In some embodiments, the battery pre-welding fixture also includes a cleaning assembly, which includes a plurality of cleaning gas paths, the plurality of cleaning gas paths are all connected to the support seat, and the plurality of cleaning gas paths are connected end to end along the edge of the welding channel, and the cleaning gas path includes a plurality of cleaning ports, and the plurality of cleaning ports are all arranged toward the welding channel.

[0017] In some embodiments, the support base comprises:

[0018] A base, wherein the base is provided with the circulation channel, and a bottom surface of the base is provided with a connecting groove connected with the circulation channel;

[0019] A welding plate is connected to the base, the welding plate is provided with the welding channel, and the welding channel is connected with the circulation channel through the connecting groove.

[0020] In some embodiments, the lifting member includes a rotary clamping cylinder and a lifting rod, the fixed end of the rotary clamping cylinder is connected to the support seat, the driving end of the rotary clamping cylinder extends to the flow channel and is connected to the lifting rod, and the lifting rod is suitable for contacting the bottom surface of the flow fixture.

[0021] The beneficial effects of the technical solution provided by this application include:

[0022] The embodiment of the present application provides a battery pre-welding fixture. Due to the setting of multiple lifting members, the multiple lifting members lift the circulation fixture in the circulation channel to lift the battery on the circulation fixture. The multiple lifting members can respectively lift different positions of different circulation fixtures to facilitate lifting different positions of the circulation fixture to the same height accordingly to ensure that the battery is placed horizontally. Therefore, when welding the top cover and shell of the battery, the actual welding position of the battery is consistent with the preset welding position, ensuring the pre-welding quality of the battery.

[0023] In a second aspect, a battery pre-welding system is provided, which is arranged on a battery assembly line and includes the battery pre-welding jig as described above.

[0024] In some embodiments, the battery pre-welding system also includes at least two groups of lifting assemblies, the two groups of lifting assemblies are arranged at intervals, the lifting assemblies include a lifting linear module and a lifting plate, the lifting linear module is connected to the lifting plate to drive the lifting plate to rise and fall, and the two lifting plates are respectively suitable for supporting the two ends of the flow fixture.

[0025] In some embodiments, the battery pre-welding system further includes a welding module, which includes:

[0026] Welding rack;

[0027] Welding head;

[0028] A welding multi-axis motion assembly, wherein the fixed end of the welding multi-axis motion assembly is connected to the welding frame, and the driving end of the welding multi-axis motion assembly is connected to the welding head.

[0029] Another embodiment of the present application provides a battery pre-welding system. Since it includes the battery pre-welding jig described above, the beneficial effects of the battery pre-welding system are consistent with the beneficial effects of the battery pre-welding jig described above, namely: after the battery pre-welding jig lifts multiple positions of the circulation jig, it is ensured that the batteries on the circulation jig are placed horizontally. Therefore, when welding the top cover and the shell of the battery, the actual welding position of the battery is consistent with the preset welding position, thereby ensuring the pre-welding quality of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 A schematic diagram of a battery pre-welding fixture provided in an embodiment of the present application;

[0032] Figure 2 A top view of a battery pre-welding fixture provided in an embodiment of the present application;

[0033] Figure 3 A side view of a battery pre-welding jig and a flow jig provided in an embodiment of the present application;

[0034] Figure 4 for Figure 1 The enlarged view of point A in the middle;

[0035] Figure 5 A schematic diagram of a support base and a lifting member provided in an embodiment of the present application;

[0036] Figure 6 A schematic top view of a support base and a lifting member provided in an embodiment of the present application;

[0037] Figure 7 for Figure 6 The enlarged view of point B in the middle;

[0038] Figure 8 A side view of a battery pre-welding system provided in accordance with another embodiment of the present application;

[0039] Fig. 9 A schematic diagram of a battery pre-welding system provided in accordance with another embodiment of the present application.

[0040] In the figure: 1. support seat; 11. base; 11a. connecting groove; 12. welding plate; 1a. circulation channel; 1b. welding channel; 1c. welding port; 2. lifting member; 21. rotary clamping cylinder; 22. lifting rod; 3. detection component; 4. cover body; 41. cover plate; 42. handle; 5. cleaning component; 51. cleaning air path; 51a. cleaning port; 51b. connecting port; 6. lifting component; 61. lifting linear module; 62. lifting plate; 7. welding module; 71. welding frame; 72. welding head; 73. welding multi-axis motion component; 731. first linear module; 732. second linear module; 733. third linear module; 8. circulation fixture; 9. battery. DETAILED DESCRIPTION

[0041] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0042] The embodiment of the present application provides a battery pre-welding jig and system, which uses multiple lifting parts to lift different positions of the circulation jig respectively to ensure that the battery on the circulation jig is in a horizontal position. Therefore, when welding the top cover and shell of the battery, the actual welding position of the battery is consistent with the preset welding position, ensuring the pre-welding quality of the battery. The present application solves the technical problem in the related art that due to the tilted placement of the battery, the actual welding position of the top cover and the shell is significantly different from the pre-designed welding position, which is easy to have an adverse effect on the welding quality of the top cover and the shell.

[0043] Reference Figure 1-Figure 3 A battery pre-welding jig includes a support seat 1 and a plurality of lifting members 2. The support seat 1 is mounted on the battery assembly line, and the support seat 1 is provided with a circulation channel 1a for a circulation jig 8 to pass through. The circulation jig 8 carries the battery 9 and circulates along the line. Due to the setting of the circulation channel 1a, the support seat 1 does not affect the circulation of the circulation jig 8 and the battery 9 on the line.

[0044] Reference Figure 2 , Figure 3 and Figure 5 , multiple lifting members 2 are all connected to the support seat 1, and the driving end of the lifting member 2 extends into the circulation channel 1a. The driving end of the lifting member 2 can be connected to the circulation jig 8, and can drive the circulation jig 8 to lift. Furthermore, multiple lifting members 2 are respectively connected to different positions of the circulation jig 8 to lift different positions of the circulation jig 8. For longer batteries 9, the length of the circulation jig 8 is also longer. By lifting different positions of the circulation jig 8 separately, it is ensured that different positions of the circulation jig 8 are lifted to the same height, which ensures that the battery 9 is in a horizontal state. After actual testing, the height difference between the highest and lowest points of the battery is controlled at 4-5mm, which greatly improves the horizontality of the battery. Therefore, when the battery 9 is pre-welded, the actual welding position of the battery 9 is not easy to deviate from the preset welding position, which improves the quality of the battery pre-welding.

[0045] When the lifting member 2 lifts the circulation jig 8, multiple lifting members 2 can be used to lift the circulation jig 8 until the batteries 9 on the circulation jig 8 are in a horizontal state.

[0046] A horizontal positioning surface can also be set on the support seat 1, and the circulation jig 8 can be lifted by using multiple lifting members 2, so that the battery 9 on the circulation jig 8 is close to the positioning surface of the support seat 1, so as to facilitate the rapid adjustment of the battery 9 to a horizontal state. At this time, the battery 9 and the circulation jig 8 are also pressed together, so that the shell and the top cover of the battery 9 are pressed tightly, and the shell and the top cover of the battery 9 are pressed tightly at many places. Even if the battery 9 is long, it can ensure that the shell and the top cover are in a tight state everywhere, thereby improving the welding quality. There is no need to set up another clamping structure to press the top cover and the shell of the battery 9, which simplifies the structure.

[0047] Reference Figure 1 and Figure 2 Specifically, a plurality of lifting members 2 are distributed along the edge of a rectangle, and the driving end of the lifting member 2 is suitable for connecting with the edge of the flow jig 8. By lifting the edge of the flow jig 8, it is easier to quickly make the battery 9 on the flow jig 8 in a horizontal state. In this embodiment, since the battery 9 is in the shape of a long strip, the lifting member 2 is connected to the edge of the flow jig 8 in the width direction.

[0048] Reference Figure 1 and Figure 2 Furthermore, the number of lifting members 2 is determined according to the length of the battery 9, and the support base 1 is provided with a plurality of holes for installing the lifting members 2, so as to accommodate batteries of various lengths. Specifically, along the length direction of the battery 9, adjacent lifting members 2 are arranged at intervals of 0.2-0.4m to ensure that the battery 9 can be adjusted to a horizontal state.

[0049] Reference Figure 1-Figure 3 Specifically, the lifting member 2 includes a rotary clamping cylinder 21 and a lifting rod 22. The fixed end of the rotary clamping cylinder 21 is fixed to the support seat 1 by bolts, and the driving end of the rotary clamping cylinder 21 vertically extends into the flow channel 1a and is connected to the lifting rod 22. The lifting rod 22 is arranged horizontally, and the lifting rod 22 can contact the bottom surface of the flow fixture 8, and the bottom surface of the flow fixture 8 is the bottom surface of the support platform of the flow fixture 8. The flow fixture 8 is supported by the lifting rod 22, so that the height of the flow fixture 8 can be adjusted by driving the lifting rod 22 to move.

[0050] The driving end of the rotary clamping cylinder 21 can rotate and move linearly. Specifically, when the driving end of the rotary clamping cylinder 21 moves, it first rotates 90 degrees and then contracts to lift the lifting rod 22.

[0051] In this embodiment, the lifting rod 22 is in a horizontal state. When the lifting rod 22 does not support the flow fixture 8, the length direction of the lifting rod 22 is consistent with the length direction of the flow fixture 8, and at this time, the distance between the two lifting rods 22 spaced apart in the width direction of the flow fixture 8 is greater than the width of the flow fixture 8, so as to ensure that the flow fixture 8 can pass from bottom to top between the two lifting rods 22 spaced apart in the width direction of the flow fixture 8.

[0052] When the flow fixture 8 needs to be supported, the rotating clamping cylinder 21 drives the lifting rod 22 to rotate 90 degrees, so that the length direction of the lifting rod 22 is consistent with the width direction of the flow fixture 8, and the projection part of the lifting rod 22 on the plane where the bottom surface of the flow fixture 8 is located falls on the bottom surface of the flow fixture 8, that is, part of the lifting rod 22 is located directly below the flow fixture 8, and the flow fixture 8 can be supported by the lifting rod 22. In addition, as the rotating clamping cylinder 21 drives the lifting rod 22 to rise, the flow fixture 8 can be lifted.

[0053] Preferably, one end of the lifting rod 22 is connected to a rubber pad, which contacts the flow fixture 8 through the rubber pad, thereby reducing the wear of the lifting rod 22 and avoiding hard collision between the flow fixture 8 and the lifting rod 22.

[0054] In some embodiments, the rotary clamping cylinder 21 can be replaced by a linear module and a rotary drive component. The linear module is driven and connected to the rotary drive component to drive the rotary drive component to rise and fall, and the rotary drive component is driven and connected to the lifting rod 22 to drive the lifting rod 22 to rotate. The linear module may include a cylinder, a linear motor or a screw mechanism, etc., and the rotary drive component may include a servo motor or a rotary cylinder, etc.

[0055] Reference Figure 1-Figure 3 , the battery pre-welding fixture also includes a detection component 3, which is used to detect the height of different positions of the battery 9 or the circulation fixture 8 to determine whether the battery 9 is in a horizontal state. Specifically, the detection component 3 includes a plurality of distance measuring parts, and the plurality of distance measuring parts are connected to the support seat 1, and the detection ends of the plurality of distance measuring parts extend into the circulation channel 1a. In this embodiment, the detection component 3 is used to detect the height of different positions of the circulation fixture 8, and the plurality of distance measuring parts respectively measure the height of different positions of the support surface of the circulation fixture 8 to determine whether the battery 9 is horizontal. And when the battery 9 is pressed against the positioning surface of the support seat 1, the plurality of distance measuring parts can also determine whether the shell and the top cover of the battery 9 are pressed against each other. Among them, the heights of the detection ends of the plurality of distance measuring parts are consistent, and by measuring the distance between the support surface of the circulation fixture 8 and the detection end of the distance measuring part, it can be determined whether the support surface of the circulation fixture 8 is horizontal. In this embodiment, the distance measuring part includes a laser rangefinder, and in other embodiments, the distance measuring part can also include a micrometer.

[0056] Reference Figure 1-Figure 3 Furthermore, in this embodiment, there are four distance measuring members, and the four distance measuring members respectively measure the four corners of the support surface of the flow fixture 8, that is, the four distance measuring members are distributed on the support seat 1 at the four corners of a rectangle. In some embodiments, there may be multiple distance measuring members, and the multiple distance measuring members are distributed on the support seat 1 at the edges of a rectangle.

[0057] In this way, by setting up the detection component 3 to detect the height of different positions of the support surface of the flow fixture 8, it is convenient to get a basis for adjusting the height of different positions of the flow fixture 8 accordingly, which not only improves the efficiency of adjusting the battery 9 to a horizontal state, but also ensures that the battery 9 is in a horizontal state through data, so as to facilitate automated design.

[0058] Reference Figure 5 and Figure 6 Optionally, the support seat 1 is also provided with a welding channel 1b for the battery 9 to pass through. The welding channel 1b is vertically arranged and connected to the circulation channel 1a. After the lifting member 2 drives the circulation fixture 8 to lift up, the battery 9 is placed in the welding channel 1b. When the lifting member 2 presses the supporting surface of the circulation fixture 8 against the positioning surface of the support seat 1, the welding channel 1b leaves room for the battery 9 to rise. In addition, the welding equipment can pass through the welding channel 1b from above to weld the battery 9, which facilitates the arrangement of the welding equipment.

[0059] Specifically, the welding channel 1b is set through the positioning surface of the support seat 1, and the shell of the battery 9 has a skirt. After the lifting member drives the battery 9 to extend to the welding channel 1b, the skirt of the battery 9 shell is tightly pressed against the positioning surface, so that the shell of the battery 9 is tightly pressed against the top cover.

[0060] Reference Figure 5-Figure 7 Furthermore, a gap is left between the circumferential side of the welding channel 1b and the circumferential side of the battery 9, so as to shield and protect the circumferential side of the battery 9 through the side of the welding channel 1b. A plurality of welding ports 1c are provided on the circumferential side of the welding channel 1b, and the welding laser of the welding equipment can pass through the welding ports 1c to weld the battery 9, and the top cover and the shell of the battery 9 can be welded together using the penetration welding technology. The setting of the welding ports 1c determines the spot welding position of the battery 9, ensures the welding consistency of each battery 9, and when welding in the welding ports 1c, the debris generated by the welding is not easy to be contaminated to the surface of the battery 9.

[0061] Reference Figure 1 and Figure 2 Furthermore, the battery pre-welding jig also includes a cover body 4, and the cover body 4 includes a shielding surface. The cover body 4 includes a cover plate 41 and a handle portion 42. The shape of the cover plate 41 fits the shape of the welding channel 1b and is covered on the welding channel 1b. The handle portion 42 overlaps the support seat 1. Among them, the shielding surface is provided on the cover plate 41 and is used to cover the top surface of the battery 9. Therefore, when the battery 9 is welded, the top surface of the battery 9 is shielded and protected by the cover plate 41, so that the debris generated by welding is prevented from contaminating the top surface of the battery 9.

[0062] Reference Figure 1-Figure 4Optionally, the battery pre-welding fixture further includes a cleaning assembly 5, which includes a plurality of cleaning gas paths 51, which are all fixed on the support seat 1, and which are arranged end to end, and which are arranged along the edge of the welding channel 1b. In this embodiment, the cross-section of the welding channel 1b is arranged in a rectangular shape, so in this embodiment, there are four cleaning gas paths 51, and the four cleaning gas paths 51 are independently fixed on the support seat 1. The cleaning gas path 51 includes a connecting port 51b and a plurality of cleaning ports 51a, and the cleaning gas path 51 is connected to an external negative pressure device or a blowing device through the connecting port 51b. The cleaning port 51a is arranged toward the welding channel 1b, and when the battery 9 is placed in the welding channel 1b, the cleaning port 51a faces the gap between the side of the battery 9 and the inner wall of the welding channel 1b, and the cleaning port 51a is used to suck or blow air to clean the debris generated by welding in time, thereby reducing the possibility of contamination of the surface of the battery 9. In this embodiment, the cleaning gas path 51 is connected to the external negative pressure device through the connecting port 51b, so as to absorb air through the cleaning port 51a to absorb the debris generated by welding, thereby preventing the debris from spreading randomly and maintaining the cleanliness of the processing environment.

[0063] In this embodiment, the cleaning ports 51a on the cleaning gas path 51 are arranged at intervals and are arranged toward the welding port 1c to accurately clean the welding position. Further, the cleaning ports 51a are arranged to be tilted downward to facilitate cleaning of the inside of the welding port 1c and improve the cleaning effect.

[0064] Reference Figure 5 and Figure 6 Further, the support seat 1 includes a base 11 and a welding plate 12. The circulation channel 1a is provided on the base 11, and a connecting groove 11a is provided on the top surface of the base 11, and the connecting groove 11a is connected with the circulation channel 1a. The welding plate 12 is fixed to the base 11 by bolts, and the welding channel 1b is provided on the welding plate 12, so that the welding channel 1b is connected with the circulation channel 1a through the connecting groove 11a.

[0065] With such arrangement, by replacing the welding plate 12, the welding channels 1b of different sizes and specifications can be replaced to adapt to the welding processing of batteries 9 of different sizes and specifications.

[0066] Among them, the positioning surface is the bottom surface of the welding plate 12. It should be noted that the width of the connecting groove 11a is greater than the width of the battery 9, and the length of the connecting groove 11a is greater than the length of the battery 9, so as to support the battery 9 to extend into the welding channel, and the skirt of the battery 9 shell can be pressed against the positioning surface.

[0067] Reference Figure 1 , Figure 2 and Figure 5Furthermore, in the present embodiment, since the detection component 3 is used to detect the height of different positions of the flow fixture 8, the detection position of the detection component 3 changes with the change of the size of the flow fixture 8, and thus the detection component 3 is mounted on the welding plate 12, and the detection end of the distance measuring part of the detection component 3 extends to the flow channel 1a through the connecting groove 11a. In addition, since the cleaning gas path 51 of the cleaning component 5 is arranged along the edge of the welding channel 1b, the cleaning component 5 is also arranged on the welding plate 12, and the cleaning gas path 51 is adaptively arranged according to the different sizes of the welding channel 1b on the welding plate 12. In summary, the welding plate 12, the detection component 3 and the cleaning component 5 are arranged in a matching manner, and can be replaced accordingly according to the different sizes of the battery 9, so as to conveniently adapt to the welding processing of different batteries 9.

[0068] The embodiment of the present application provides a battery pre-welding fixture. Due to the provision of multiple lifting members 2, the multiple lifting members 2 lift the circulation fixture 8 in the circulation channel 1a to lift the battery 9 on the circulation fixture 8. The multiple lifting members 2 can respectively lift different positions of different circulation fixtures 8 to facilitate lifting different positions of the circulation fixture 8 to the same height accordingly, ensuring that the battery 9 is placed horizontally. Therefore, when welding the top cover and the shell of the battery 9, the actual welding position of the battery 9 is consistent with the preset welding position, ensuring the pre-welding quality of the battery 9.

[0069] Another embodiment of the present application provides a battery pre-welding system, which is arranged on a battery assembly line and includes the battery pre-welding fixture as described above.

[0070] Reference Figure 8 and Fig. 9 Optionally, the battery pre-welding system further includes at least two groups of lifting components 6, which are arranged on the line body and used to lift the flow fixture 8 so as to lift the flow fixture 8 so that it can be connected to the battery pre-welding fixture. Specifically, the lifting component 6 is used to lift the flow fixture 8 so that the support platform of the flow fixture 8 is higher than the lifting rod 22 of the lifting member 2, and then the lifting rod 22 is rotated to support the flow fixture 8.

[0071] Reference Figure 8 and Fig. 9Specifically, in this embodiment, the number of the jacking assemblies 6 is two. The two jacking assemblies 6 are spaced apart in the length direction of the battery 9, and the two jacking assemblies 6 are both located in the circulation channel 1a, and the circulation fixture 8 can pass between the two jacking assemblies 6. The two jacking assemblies 6 respectively support the two ends of the support platform of the circulation fixture 8 and push the circulation fixture 8 to rise. Specifically, the jacking assembly 6 includes a jacking linear module 61 and a jacking plate 62, the fixed end of the jacking linear module 61 is fixed on the line body, and the driving end of the jacking linear module 61 moves vertically and is connected to the jacking plate 62 to drive the jacking plate 62 to rise and fall. The jacking plate 62 is used to support the two ends of the bottom surface of the support platform of the circulation fixture 8. In this embodiment, the jacking linear module 61 includes a cylinder, and in other embodiments, the jacking linear module 61 includes a screw mechanism or a linear motor.

[0072] Due to the setting of the lifting assembly 6, the circulation jig 8 can be lifted by lifting the end of the support platform of the circulation jig 8 to facilitate the connection of the battery pre-welding jig to the circulation jig 8. In addition, the position of the battery pre-welding jig used to connect the circulation jig 8 is higher than the position where the circulation jig 8 and the battery 9 normally circulate on the line, so that the battery 9 does not interfere with the battery pre-welding jig when it circulates on the line. The use of the lifting assembly 6 facilitates the automatic delivery of the circulation jig 8 to the connection point of the battery 9 welding jig to facilitate the automated welding of the battery.

[0073] Reference Figure 8 and Fig. 9 The battery pre-welding system further includes a welding frame 71, a welding head 72 and a welding multi-axis motion assembly 73. The welding frame 71 is mounted on the wire body, and the welding multi-axis motion assembly 73 is drivingly connected to the welding head 72 to drive the welding head 72 to move in the vertical direction, the length direction of the battery 9 and the width direction of the battery 9 to weld the battery 9. In this embodiment, the welding method of the welding head 72 is laser penetration welding.

[0074] Reference Figure 8 and Fig. 9Specifically, the welding multi-axis motion assembly 73 includes a first linear module 731, a second linear module 732 and a third linear module 733. The driving end of the first linear module 731 moves in the vertical direction and is connected to the welding head 72, the driving end of the second linear module 732 moves in the width direction of the battery 9 and is connected to the fixed end of the first linear module 731, the driving end of the third linear module 733 moves in the length direction of the battery 9 and is connected to the fixed end of the second linear module 732, and the fixed end of the third linear module 733 is fixed to the welding frame 71. It can be understood that the first linear module 731 drives the welding head 72 to move vertically, the second linear module 732 drives the welding head 72 to move in the width direction of the battery 9, and the third linear module 733 drives the welding head 72 to move in the length direction of the battery 9. Therefore, the welding head 72 can undergo multi-axis motion to achieve welding of the battery 9.

[0075] In this embodiment, the first linear module 731 , the second linear module 732 and the third linear module 733 all include a screw mechanism.

[0076] Another embodiment of the present application provides a battery pre-welding system. Since it includes the battery pre-welding jig described above, the beneficial effects of the battery pre-welding system are consistent with the beneficial effects of the battery pre-welding jig described above, namely: after the battery pre-welding jig lifts multiple positions of the circulation jig 8, it is ensured that the battery 9 on the circulation jig 8 is placed horizontally. Therefore, when welding the top cover and the shell of the battery 9, the actual welding position of the battery 9 is consistent with the preset welding position, thereby ensuring the pre-welding quality of the battery.

[0077] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0078] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0079] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A battery pre-welding fixture, characterized in that: It includes: A support seat, under which a circulation channel is provided for the circulation fixture to pass through; A detection component, comprising a plurality of distance measuring members, wherein the plurality of distance measuring members are connected to the support seat, and the detection ends of the plurality of distance measuring members extend into the circulation channel to detect the height of different positions of the circulation fixture or the battery; Multiple lifting members, multiple lifting members are connected to the support seat, the driving end of the lifting member extends to the flow channel and is suitable for connecting to the flow fixture, multiple lifting members are suitable for respectively lifting multiple different positions of the flow fixture, multiple lifting members cooperate with the detection component to lift different positions of the flow fixture to the same height accordingly; the lifting member includes a rotary clamping cylinder and a lifting rod, the fixed end of the rotary clamping cylinder is connected to the support seat, the driving end of the rotary clamping cylinder extends to the flow channel and is connected to the lifting rod, and the lifting rod is suitable for contacting the bottom surface of the flow fixture.

2. The battery pre-welding fixture according to claim 1, characterized in that: The plurality of lifting members are distributed along the edge of a rectangle, and the driving ends of the lifting members are suitable for connecting to the edges of the circulation fixture.

3. The battery pre-welding fixture according to claim 1, characterized in that: The support seat also includes a positioning surface, and the lifting member is suitable for driving the battery to press against the positioning surface.

4. The battery pre-welding fixture according to claim 1, characterized in that: The support seat is also provided with a welding channel for the battery to pass through, and the welding channel is communicated with the circulation channel.

5. The battery pre-welding jig according to claim 4, characterized in that: The circumferential side surface of the welding channel is provided with a plurality of welding openings arranged at intervals.

6. The battery pre-welding jig according to claim 4, characterized in that: It also includes a cover body, which includes a shielding surface. The cover body is arranged to cover the welding channel, and the shielding surface is suitable for covering the top surface of the battery.

7. The battery pre-welding jig according to claim 4 or 5, characterized in that: It also includes a cleaning component, which includes a plurality of cleaning gas paths, wherein the plurality of cleaning gas paths are connected to the support seat, and the plurality of cleaning gas paths are connected end to end along the edge of the welding channel, and the cleaning gas path includes a plurality of cleaning ports, and the plurality of cleaning ports are arranged toward the welding channel.

8. The battery pre-welding jig according to claim 4, characterized in that: The support base comprises: A base, wherein the base is provided with the circulation channel, and a bottom surface of the base is provided with a connecting groove connected with the circulation channel; A welding plate is connected to the base, the welding plate is provided with the welding channel, and the welding channel is connected with the circulation channel through the connecting groove.

9. A battery pre-welding system, which is arranged on a battery assembly line, characterized in that: A battery pre-welding jig as claimed in any one of claims 1 to 8.

10. The battery pre-welding system according to claim 9, characterized in that: It also includes at least two groups of lifting components, which are arranged at intervals. The lifting components include a lifting linear module and a lifting plate. The lifting linear module is drivingly connected to the lifting plate to drive the lifting plate to rise and fall. The two lifting plates are respectively suitable for supporting the two ends of the flow fixture.

11. The battery pre-welding system according to claim 9, characterized in that: Also included is a welding module, which includes: Welding rack; Welding head; A welding multi-axis motion assembly, wherein the fixed end of the welding multi-axis motion assembly is connected to the welding frame, and the driving end of the welding multi-axis motion assembly is connected to the welding head.

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