Welding positioning system for aluminum shell battery cover plate and battery cell connecting piece

Abstract

The utility model relates to the technical field of aluminum shell batteries, in particular to an aluminum shell battery cover plate and battery cell connecting piece welding positioning system which comprises a placing clamp, a shell end positioning mechanism, a shell side positioning mechanism, a battery cell positioning mechanism and a welding device, and the placing clamp is used for placing a shell internally provided with a battery cell; the shell end part positioning mechanism is used for positioning the first end of the shell, the second cover plate and the first cover plate; the battery cell positioning mechanism is used for positioning a battery cell in the shell along a first direction; the shell side positioning mechanism is used for positioning the two sides, in the second direction, of the shell placed on the placing clamp. And the welding device is used for welding the connecting sheet connected with the positioned battery cell and the first cover plate together. The system can position the shell, the battery cell, the connecting piece and the first cover plate in all directions, and is matched with the welding device for direct welding under the condition of keeping the positioning state, so that the welding effect is improved, and the battery quality is finally ensured.

Description

Technical Field

[0001] The present application relates to the technical field of aluminum shell batteries, and in particular to a welding positioning system for an aluminum shell battery cover plate and a battery cell connecting piece. Background Art

[0002] At present, in the production process of aluminum shell batteries, after the current collector of the battery cell is welded to the connecting piece, the battery cell is installed in the aluminum shell, and then the cover plate and the connecting piece are welded. The connecting piece is in close contact with the current collector on the battery cell to establish a current transmission channel, and then transmits it to the cover plate. The connecting piece has excellent conductivity and can provide a low-resistance current transmission path to ensure that electric energy can be efficiently transmitted between the positive and negative electrodes of the battery.

[0003] In the automated equipment, after the battery cell current collector is welded to the connecting piece, the battery cell is put into the shell, the first connecting piece at the first end is welded to the first cover plate, the first cover plate is fitted with the shell, the first cover plate is welded, and then the second cover plate at the second end and the second connecting piece connected to the battery cell are positioned along the front and rear ends of the length direction of the horizontal shell, and then the positioned second cover plate and second connecting piece are released, and the released overall structure is moved to the next station for welding. Since the metal first connecting piece is elastic, it will be displaced, causing the battery cell to move in the shell. In this process, the welding position of the second connecting piece at the first end and the second cover plate is easily shifted, which will cause the welding position to be offset, and the welding will not be effective, affecting the battery quality. Utility Model Content

[0004] The purpose of the present application is to provide a welding positioning system for an aluminum shell battery cover plate and a battery cell connecting piece, which to a certain extent solves the technical problem that in the previous process of aluminum shell battery production, after the first connecting piece, the first cover plate and the shell at one end are assembled and welded, the second cover plate and the second connecting piece at the second end are only positioned front and back, and then released after the positioning is completed, and moved to the next process for welding. Since the first connecting piece is elastic, it will push the battery cell to move, causing the second connecting piece and the second cover plate connected to the battery cell to shift, which will cause the welding position to shift and affect the welding quality.

[0005] The present application provides a welding positioning system for an aluminum shell battery cover plate and a battery cell connecting piece, which is used for positioning welding of an intermediate product of a battery, wherein the intermediate product of the battery comprises a shell, a battery cell, a connecting piece, a first cover plate and a second cover plate, wherein the battery cell is installed in the shell, and the pole ear of the battery cell is connected to the connecting piece; an opening is formed at a first end of the shell along a first direction, and is provided with the first cover plate to be welded; a second end of the shell opposite to the first end is welded with the second cover plate;

[0006] The aluminum shell battery cover plate and the battery cell connection piece welding positioning system comprises: a placement fixture, a shell end positioning mechanism, a shell side positioning mechanism, a battery cell positioning mechanism and a welding device; wherein the placement fixture is used to place the shell; the shell end positioning mechanism is used to position the first end of the shell, the second cover plate and the first cover plate to be welded;

[0007] The battery cell positioning mechanism is used to position the battery cell in the shell along the first direction; the shell side positioning mechanism is used to position the two sides of the shell placed on the placement fixture along the second direction; the welding device is used to weld the connecting piece connected to the battery cell after positioning to the first cover plate.

[0008] In the above technical solution, further, the shell end positioning mechanism includes a first end positioning mechanism and a second end positioning mechanism; wherein the first end of the shell is formed with an opening and is provided with the first cover plate to be welded, and the second end of the shell opposite to the first end is welded with the second cover plate;

[0009] The first end positioning mechanism is used to position the first end of the shell and a first cover plate placed parallel to the opening direction thereof, and the second end positioning mechanism is used to position the second cover plate of the shell.

[0010] In any of the above technical solutions, further, the first end positioning mechanism includes a first positioning member, the first positioning member is formed with a first positioning groove, and the opening of the first positioning groove faces one side of the shell, and the first end of the shell abuts against the inner wall of the first positioning groove;

[0011] The first positioning member is formed with a second positioning groove, and the opening direction of the second positioning groove is perpendicular to the opening direction of the first end of the shell, and the first cover plate is positioned in the second positioning groove.

[0012] In any of the above technical solutions, further, the second end positioning mechanism includes a second driving device and a second positioning member; wherein the output end of the second driving device is connected to the second positioning member for driving the second positioning member to move along the first direction.

[0013] In any of the above technical solutions, further, the shell side positioning mechanism includes a lifting mechanism, a first side positioning mechanism and a second side positioning mechanism;

[0014] Wherein, the first side positioning mechanism and the second side positioning mechanism are respectively connected to the lifting mechanism, and the lifting mechanism is used to drive the first side positioning mechanism and the second side positioning mechanism to rise and fall along the thickness direction of the shell;

[0015] The first side positioning mechanism is used to position one side of the housing, and the second side positioning mechanism is used to position the other opposite side of the housing.

[0016] In any of the above technical solutions, further, the first side positioning mechanism includes a first side driving device and a first side positioning member; wherein the output end of the first side driving device is connected to the first side positioning member to drive the first side positioning member to move along the second direction;

[0017] The second side positioning mechanism includes a second side driving device and a second side positioning member; wherein the output end of the second side driving device is connected to the second side positioning member for driving the second side positioning member to move along the second direction.

[0018] In any of the above technical solutions, further, the shell side positioning mechanism also includes a first supporting member, the fixed end of the first side driving device is fixed to the first supporting member, and the first side positioning member and the second side positioning member are respectively slidably connected to the first supporting member.

[0019] In any of the above technical solutions, further, the lifting mechanism includes a second supporting member, a lifting drive device and a transition member; wherein, the fixed end of the lifting drive device is fixed to the second supporting member, and the driving end of the lifting drive device is connected to the first side positioning mechanism and the second side positioning mechanism through the transition member; the transition member is slidably connected to the second supporting member.

[0020] In any of the above technical solutions, further, the battery cell positioning mechanism includes a battery cell positioning drive device and a battery cell positioning component; wherein the driving end of the battery cell positioning drive device is connected to the battery cell positioning component and is used to drive the battery cell positioning component to move along the first direction.

[0021] In any of the above technical solutions, further, the battery cell positioning mechanism also includes a fourth supporting member, the fixed end of the battery cell positioning drive device is fixed to the fourth supporting member, and the battery cell positioning member is slidably connected to the fourth supporting member.

[0022] In any of the above technical solutions, further, the aluminum shell battery cover plate and the battery cell connecting piece welding positioning system also includes a support frame, and part of the structure of the shell side positioning mechanism and the shell end positioning mechanism is installed on the support frame.

[0023] Compared with the prior art, the beneficial effects of this application are:

[0024] The aluminum shell battery cover plate and battery cell connecting piece welding positioning system provided in the present application can fully position the shell, battery cell and the first cover plate to be welded, thereby ensuring that the welding position of the first cover plate and the connecting piece connected to the battery cell remains unchanged, and while maintaining this positioning state, the first cover plate and the connecting piece are directly welded in cooperation with the welding device, which improves the welding effect and ultimately ensures the quality of the battery. Moreover, positioning and welding are integrated in one process, which is different from the prior art in which it is carried out in two processes, reducing the number of processes. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 A schematic diagram of the structure of the welding positioning system for the aluminum shell battery cover plate and the battery cell connecting piece provided in an embodiment of the present application;

[0027] Figure 2 Another structural schematic diagram of the welding positioning system of the aluminum shell battery cover plate and the battery cell connecting piece provided in an embodiment of the present application;

[0028] Figure 3 A schematic diagram of the assembly of the aluminum shell battery cover plate and the battery cell connecting piece welding positioning system and the shell provided in the embodiment of the present application;

[0029] Figure 4 Another assembly diagram of the aluminum shell battery cover plate and the battery cell connecting piece welding positioning system and the shell provided in the embodiment of the present application;

[0030] Figure 5 A schematic diagram of the structure of a placement fixture provided in an embodiment of the present application;

[0031] Figure 6 A schematic structural diagram of a first positioning member provided in an embodiment of the present application;

[0032] Figure 7 An assembly diagram of a placement fixture, a housing, a first end positioning mechanism, and a second end positioning mechanism provided in an embodiment of the present application;

[0033] Figure 8 Another assembly diagram of the placement fixture, the housing, the first end positioning mechanism and the second end positioning mechanism provided in the embodiment of the present application;

[0034] Fig. 9 for Figure 8 A schematic diagram of the enlarged structure at A;

[0035] Fig.10 Another assembly diagram of the placement fixture, the housing, the first end positioning mechanism and the second end positioning mechanism provided in the embodiment of the present application;

[0036] Fig.11 for Fig.10 A schematic diagram of the enlarged structure at B;

[0037] Fig.12 An assembly diagram of a fourth slide rail and a fourth slide block provided in an embodiment of the present application;

[0038] Fig.13 Another assembly diagram of the fourth slide rail and the fourth slide block provided in the embodiment of the present application;

[0039] Fig.14 A schematic diagram of the structure of a cell positioning mechanism provided in an embodiment of the present application;

[0040] Fig.15 An assembly diagram of a placement fixture, a housing, and a cell positioning mechanism provided in an embodiment of the present application;

[0041] Fig.16 for Fig.15 A schematic diagram of the enlarged structure at C;

[0042] Fig.17 A schematic diagram of the structure of the housing side positioning mechanism provided in an embodiment of the present application;

[0043] Fig.18 Another structural schematic diagram of the housing side positioning mechanism provided in an embodiment of the present application;

[0044] Fig.19 This is another structural schematic diagram of the shell side positioning mechanism provided in an embodiment of the present application.

[0045] Reference numerals:

[0046] 1- Place the fixture;

[0047] 2-housing end positioning mechanism, 21-first end positioning mechanism, 211-first positioning member, 2111-first limiting plate, 2112-second limiting plate, 2113-third limiting plate, 2114-fourth limiting plate, 2115-first positioning groove, 2116-second positioning groove, 22-second end positioning mechanism, 221-second driving device, 222-second positioning member, 223-transmission plate, 224-fourth slide rail, 225-fourth slide block;

[0048] 3-shell side positioning mechanism, 31-lifting mechanism, 311-second supporting member, 312-lifting driving device, 313-transfer member, 314-second slide rail, 315-second slider, 32-first side positioning mechanism, 321-first side driving device, 322-first side positioning member, 3221-first extension plate, 3222-first positioning plate, 323-first connecting beam, 324-first protection pad, 33-second side positioning mechanism, 331-second side driving device, 332-second side positioning member, 3321-second extension plate, 3322-second positioning plate, 333-second connecting beam, 334-second protection pad, 34-first supporting member, 35-first slide rail, 36-first slider;

[0049] 4-battery cell positioning mechanism, 41-battery cell positioning driving device, 42-battery cell positioning member, 421-waist-shaped through hole, 43-fourth supporting member, 44-third slide rail, 45-third slider, 46-adapter;

[0050] 5-support frame, 6-welding device, 7-housing, 8-first cover plate, 9-second cover plate, 10-battery cell, 11-connecting piece. DETAILED DESCRIPTION

[0051] The technical solution of the present application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0052] The components of the embodiments of the present application generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed, but merely represents the selected embodiments of the present application.

[0053] Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of this application.

[0054] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the 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 limiting the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0055] In the description of this application, it should be noted that, 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 indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0056] Refer to the following Figures 1 to 19 The invention describes a welding positioning system for an aluminum shell battery cover plate and a battery cell connecting piece according to some embodiments of the present application.

[0057] Embodiment 1

[0058] See also Figures 1 to 19 As shown, an embodiment of the present application provides a welding positioning system for an aluminum shell battery cover plate and a battery cell connecting piece, which is used for welding and positioning an intermediate product of a battery. The intermediate product of a battery described herein refers to a product obtained in a process before forming a final battery product, and preferably, the intermediate product of the battery includes a shell 7, a battery cell 10, a connecting piece 11, a first cover plate 8 and a second cover plate 9 for positioning welding. An opening is formed at the first end of the shell 7, and the first cover plate 8 to be welded is provided. It can be seen that the first cover plate 8 is not welded to the shell 7 at this time; the second end of the shell 7 opposite to the first end is welded with the second cover plate 9; the battery cell 10 is installed in the shell 7, and the pole ear of the battery cell 10 is connected with a connecting piece 11. In this process, the first cover plate 8 and the connecting piece 11 need to be positioned by using this system, and the connecting piece 11 is welded to the first cover plate 8;

[0059] The welding positioning system of the aluminum shell battery cover plate and the battery cell connecting piece comprises: a placement fixture 1, a shell end positioning mechanism 2, a shell side positioning mechanism 3, a battery cell positioning mechanism 4 and a welding device 6; wherein the placement fixture 1 is used to place the shell 7 with the battery cell 10 installed inside; the shell end positioning mechanism 2 is used to position the first end of the shell 7 placed on the placement fixture 1, the second cover plate and the first cover plate to be welded;

[0060] The battery cell positioning mechanism 4 is used to position the battery cell 10 in the housing 7 along the first direction. Specifically, the battery cell 10 is installed in the housing 7, one end of the battery cell 10 abuts against the second cover plate 9, and the second cover plate 9 is positioned by the housing end positioning mechanism 2. In this case, only the battery cell positioning mechanism 4 needs to be used to position the end of the battery cell 10 close to the first cover plate 8.

[0061] The housing side positioning mechanism 3 is used to position the housing 7 placed on the placement fixture 1 on both sides along the second direction; the welding device 6 is used to weld the connection piece 11 connected to the battery cell 10 after positioning to the first cover plate 8.

[0062] In addition, preferably, the shell 7 is in the shape of a flat rectangular parallelepiped and is placed horizontally on the placement fixture 1, and the large surface formed by the length and width of the shell 7 is parallel to the upper surface of the placement fixture 1; the aforementioned first direction is the length direction of the shell 7 in this state, and the aforementioned second direction is the width direction of the shell 7 in this state. This will be used as an example to illustrate below. Of course, the shape of the shell 7 is not limited to the above. For example, the shell 7 can also be in the shape of a polygon or a cylinder, etc. In addition, the first direction and the second direction can also be changed according to actual needs.

[0063] Based on the structure described above, it can be seen that the process of positioning and welding the battery using the aluminum shell battery cover plate and battery cell connecting piece welding positioning system provided by the present application is as follows:

[0064] The first cover plate 8 is pre-placed on the mounting position of the housing end positioning mechanism 2, and the housing 7 with the battery cell 10 mounted thereon is placed horizontally on the placement fixture 1 by a manipulator. At this time, the first cover plate 8 is just located at the opening of the first end of the housing 7, and the connecting piece 11 connected to the battery cell 10 is located on the upper surface of the first cover plate 8;

[0065] Then, the housing end positioning mechanism 2 is used to position the two ends of the housing 7 along its length direction, and then the housing side positioning mechanism 3 is used to position the two sides of the housing 7 along its width direction, and the positioning of the housing 7 is completed at this time;

[0066] Then, the battery cell 10 is positioned by using the battery cell positioning mechanism 4 so that the position of the battery cell 10 along the length direction of the housing 7 remains unchanged, and finally, the first cover plate 8 and the connecting piece 11 on the battery cell 10 are welded together by using the welding device 6 .

[0067] It can be seen that the aluminum shell battery cover and battery cell connecting piece welding positioning system can fully position the shell 7, the battery cell 10 and the first cover plate 8 to be welded, thereby ensuring that the welding position of the first cover plate 8 and the connecting piece 11 connected to the battery cell 10 remains unchanged, and while maintaining this positioning state, the first cover plate 8 and the connecting piece 11 are directly welded in cooperation with the welding device 6, which improves the welding effect and ultimately ensures the quality of the battery, and the positioning and welding are integrated in one process, which is different from the prior art in which it is carried out in two processes, thereby reducing the number of processes.

[0068] In this embodiment, preferably, Figures 1 to 11As shown, the shell end positioning mechanism 2 includes a first end positioning mechanism 21 and a second end positioning mechanism 22; wherein, the first end of the shell 7 is formed with an opening and is provided with a first cover plate 8 to be welded, and the second end of the shell 7 opposite to the first end is welded with a second cover plate 9;

[0069] The first end positioning mechanism 21 is used to position one end of the shell 7 and the first cover plate 8 placed parallel to the opening direction thereof, and the second end positioning mechanism 22 is used to position the second cover plate 9 of the shell 7 .

[0070] According to the structure described above, the first end positioning mechanism 21 and the second end positioning mechanism 22 are used to respectively position the front and rear ends of the horizontally placed shell 7, that is, the top and bottom ends when placed vertically, thereby playing a role in positioning the shell 7. In addition, the first end positioning mechanism 21 can also be used to position the horizontally placed first cover plate 8 (the horizontally placed first cover plate 8 refers to the main surface formed by the length direction and the width direction of the first cover plate 8 is placed parallel to the horizontal direction), thereby ensuring the relative position relationship between the first cover plate 8 and the connecting plate 11 and ensuring the welding quality.

[0071] Further, preferably, the placement fixture 1 is rectangular, and its length direction is the same as the length direction of the shell 7 placed horizontally, and its width direction is the same as the width direction of the shell 7 placed horizontally, and the first end positioning mechanism 21 and the second end positioning mechanism 22 are respectively arranged on both sides of the placement fixture 1 along its length direction; the lifting mechanism 31, the first side positioning mechanism 32 and the second side positioning mechanism 33 described below are arranged above the placement platform.

[0072] In this embodiment, preferably, Figures 5 to 11 As shown, the first end positioning mechanism 21 includes a first positioning member 211, the first positioning member 211 is formed with a first positioning groove 2115, and the opening of the first positioning groove 2115 faces one side of the housing 7, and the first end of the housing 7 abuts against the inner wall of the first positioning groove 2115;

[0073] The first positioning member 211 is formed with a second positioning groove 2116 , and the opening direction of the second positioning groove 2116 is perpendicular to the opening direction of the first end of the shell 7 ; the first cover plate 8 is placed in the second positioning groove 2116 , and the second positioning groove 2116 is adapted.

[0074] According to the structure described above, the first positioning member 211 can simultaneously position the first cover plate 8 and the first end of the shell 7 , and has a simple structure, small occupied space, and low material cost.

[0075] Further, preferably, Figure 6As shown, the first positioning member 211 includes a first limiting plate 2111, a second limiting plate 2112, a third limiting plate 2113 and a fourth limiting plate 2114; wherein the first limiting plate 2111 is arranged along a small surface formed by a length and a thickness of the horizontally placed battery cell 10, and the first limiting plate 2111 is L-shaped, including a horizontal portion and a vertical portion; the second limiting plate 2112, the third limiting plate 2113 and the fourth limiting plate 2114 are all arranged on one side of the first limiting plate 2111, and preferably, the second limiting plate 2112 and the third limiting plate 2113 are arranged on one side of the horizontal portion, and the fourth limiting portion is arranged on one side of the vertical portion; the second limiting plate 2112 and the fourth limiting plate 21 14 is parallel to the large surface formed by the length and width of the horizontally placed battery cell 10 and is horizontally arranged; the third limiting plate 2113 is arranged perpendicular to the second limiting plate 2112, and is surrounded by the first limiting plate 2111, the third limiting plate 2113 and the fourth limiting plate 2114 to form a first positioning groove 2115, and the top corners of the first end of the battery cell 10 are respectively against the third limiting plate 2113 and the first limiting plate 2111; the first limiting plate 2111, the second limiting plate 2112 and the fourth limiting plate 2114 are surrounded by a second positioning groove 2116, and the bottom of the first cover plate 8 is against the second limiting plate 2112, and the side of the first cover plate 8 close to the battery cell 10 is against the third limiting plate 2113.

[0076] Further, preferably, the first positioning member 211, namely the first limiting plate 2111, the second limiting plate 2112, the third limiting plate 2113 and the fourth limiting plate 2114 are an integrated structure with high overall structural strength. It should be noted that the structure of the first positioning member 211 is not limited to the above, and can also be designed according to actual needs.

[0077] Further, preferably, Figure 5 As shown, there are two first positioning members 211, which are spaced apart along the width direction of the shell 7, that is, along the width direction of the placement fixture 1, for positioning the two sides of the first end of the shell 7. Of course, this is not limited to this, and the number of the first positioning members 211 can also be one, which is selected according to actual needs.

[0078] In this embodiment, preferably, Figure 5 and Figure 7 As shown, the second end positioning mechanism 22 includes a second driving device 221 and a second positioning member 222; wherein the output end of the second driving device 221 is connected to the second positioning member 222 for driving the second positioning member 222 to move along the first direction.

[0079] According to the structure described above, when the first end of the shell 7 is positioned, the second driving device 221 is used to drive the second positioning member 222 to move toward the side of the shell 7, so that the second positioning member 222 presses the first cover plate 8 of the shell 7 to achieve the positioning of the second end of the shell 7.

[0080] Further, preferably, Figure 5 As shown, the second end positioning mechanism 22 also includes a plurality of transmission plates 223, which are connected between the driving end of the driving device and the first positioning member 211 to play a transmission role. Moreover, this structure is more flexible and can adapt to different installation spaces, etc., and preferably can be detachably connected by bolts.

[0081] Further, preferably, Figure 7 , Fig.12 and Fig.13 As shown, the second positioning member 222 is slidably connected to the placement fixture 1, which plays a role in guiding the movement of the second positioning member 222, so that the second positioning member 222 moves more smoothly, and preferably, the placement fixture 1 is provided with a fourth slider 225, the transmission plate 223 connected to the second positioning member 222 is provided with a fourth slide rail 224, and the fourth slider 225 is slidably connected to the fourth slide rail 224.

[0082] Further, preferably, Figure 7 As shown, there are two second positioning members 222, which are spaced apart along the width direction of the shell 7, and are used to position the two sides of the second end of the shell 7, so that the positioning effect is better. In this structure, the two positioning members share multiple transmission plates 223, and some of the multiple transmission plates 223 can be designed as rectangular plates, and some can be designed as a fork-shaped structure with two teeth, etc., which can be selected according to actual needs.

[0083] Further, preferably, the second driving device 221 is a cylinder or a linear motor or the like.

[0084] In this embodiment, preferably, Fig.17 and Fig.19 As shown, the shell side positioning mechanism 3 includes a lifting mechanism 31, a first side positioning mechanism 32 and a second side positioning mechanism 33; wherein, the first side positioning mechanism 32 and the second side positioning mechanism 33 are respectively connected to the lifting mechanism 31, and the lifting mechanism 31 is used to drive the first side positioning mechanism 32 and the second side positioning mechanism 33 to lift and lower along the thickness direction of the shell 7; the first side positioning mechanism 32 is used to position one side of the shell 7, and the second side positioning mechanism 33 is used to position the other opposite side of the shell 7.

[0085] According to the structure described above, after the front and rear ends of the shell 7 are positioned, the lifting mechanism 31 can be used to first adjust the first side positioning mechanism 32 and the second side positioning mechanism 33 to a suitable height, that is, the side of the first side positioning member 322 of the first side positioning mechanism 32 close to the lower end and the side of the second side positioning member 332 of the second side positioning mechanism 33 close to the lower end correspond to the two side parts of the shell 7 respectively, and then the first side positioning mechanism 32 and the second side positioning mechanism 33 are used to position the two side parts of the shell 7, that is, the two side positioning mechanisms respectively position the two small faces of the shell 7 formed by the length direction and the thickness direction, and cooperate with the aforementioned structure for positioning the front and rear ends of the shell 7, thereby realizing the positioning of the four entire circumferential surfaces of the shell 7, and further improving the welding accuracy.

[0086] In this embodiment, preferably, Figures 17 to 19 As shown, the first side positioning mechanism 32 includes a first side driving device 321 and a first side positioning member 322; wherein the output end of the first side driving device 321 is connected to the first side positioning member 322 for driving the first side positioning member 322 to move along the second direction.

[0087] Further, preferably, the second side positioning mechanism 33 includes a second side driving device 331 and a second side positioning member 332; wherein the output end of the second side driving device 331 is connected to the second side positioning member 332 for driving the second side positioning member 332 to move along the second direction.

[0088] According to the structure described above, it can be known that after the first end and the second end of the shell 7 are positioned, and the height of the first side positioning member 322 and the second side positioning member 332 are adjusted by the lifting mechanism 31, the first side driving device 321 is used to drive the first side positioning member 322 to move toward the side of the shell 7, so that the first side positioning member 322 presses one side of the shell 7 to achieve the positioning of one side of the shell 7. At the same time, the second side driving device 331 is used to drive the second side positioning member 332 to move toward the side of the shell 7, so that the second side positioning member 332 presses the other opposite side of the shell 7 to achieve the positioning of the other side of the shell 7, thereby further achieving the positioning of the left and right sides of the shell 7.

[0089] Further, preferably, the number of the first side positioning members 322 is two, and they are spaced apart along the length direction of the housing 7. Further, preferably, the first side positioning mechanism 32 further includes a first connecting beam 323, the two ends of the first connecting beam 323 are respectively connected to the two first side positioning members 322, and the driving end of the first side driving device 321 is connected to the first connecting beam 323, so that the two first side positioning members 322 can be driven to move simultaneously. Of course, not limited to the above, the number of the first side positioning members 322 can also be one or more than two.

[0090] Further, preferably, the number of the second side positioning members 332 is two, and they are spaced apart along the length direction of the housing 7. Further, preferably, the second side positioning mechanism 33 also includes a second connecting beam 333, the two ends of the second connecting beam 333 are respectively connected to the two second side positioning members 332, and the driving end of the second side driving device 331 is connected to the second connecting beam 333, which can simultaneously drive the two second side positioning members 332 to move. Of course, not limited to the above, the number of the second side positioning members 332 can also be one or more than two.

[0091] Further, preferably, the first side driving device 321 and the second side driving device 331 are both cylinders or linear motors.

[0092] Further, preferably, Fig.17 As shown, the first side positioning member 322 includes a first extension plate 3221 and a first positioning plate 3222; wherein, the first positioning plate 3222 is arranged on the side of the first extension plate 3221 close to the shell 7, and preferably, the first positioning plate 3222 and the first extension plate 3221 are detachably connected by bolts, and a first protective pad 324 can be installed on the side of the first positioning plate 3222 close to the shell 7, thereby playing a role in protecting the shell 7.

[0093] Further, preferably, Fig.18 As shown, the second side positioning member 332 includes a second extension plate 3321 and a second positioning plate 3322; wherein, the second positioning plate 3322 is arranged on the side of the second extension plate 3321 close to the shell 7, and preferably, the second positioning plate 3322 and the second extension plate 3321 are detachably connected by bolts, and a second protective pad 334 can be installed on the side of the second positioning plate 3322 close to the shell 7, thereby playing a role in protecting the shell 7.

[0094] In this embodiment, preferably, Fig.17As shown, the shell side positioning mechanism 3 also includes a first supporting member 34, a fixed end of the first side driving device 321 is fixed to the first supporting member 34, a first connecting beam 323 connected to the first side positioning member 322 and a second connecting beam 333 connected to the second side positioning member 332 are respectively slidably connected to the first supporting member 34, and preferably, the first supporting member 34 is provided with a first sliding rail 35, the first connecting beam 323 is provided with a first slider 36, the first slider 36 and the first sliding rail 35 are slidably connected, the third supporting member is provided with a second sliding rail 314, the second connecting beam 333 is provided with a second slider 315, the second slider 315 and the second sliding rail 314 are slidably connected.

[0095] According to the structure described above, the first side positioning mechanism 32 and the second side positioning mechanism 33 are integrated on the same first supporting member 34, which has a high degree of integration, is convenient for overall movement, has fewer parts, and saves material costs.

[0096] In this embodiment, preferably, Fig.17 As shown, the lifting mechanism 31 includes a second supporting member 311, a lifting drive device 312 and a transfer member 313; wherein, the fixed end of the lifting drive device 312 is fixed to the second supporting member 311, and the driving end of the lifting drive device 312 is connected to the first side positioning mechanism 32 and the second side positioning mechanism 33 through the transfer member 313; the transfer member 313 is slidably connected to the second supporting member 311, and preferably, the second supporting member 311 is provided with a second slide rail 314, the transfer member 313 is provided with a second slider 315, and the second slider 315 is slidably connected to the second slide rail 314.

[0097] According to the structure described above, it can be known that the second supporting member 311 plays the role of supporting the lifting drive device 312; the adapter member 313 is slidably connected to the second supporting member 311, and plays a guiding role during the lifting and lowering process of the first side positioning mechanism 32 and the second side positioning mechanism 33, so that the first side positioning mechanism 32 and the second side positioning mechanism 33 are more stable during the lifting and lowering process.

[0098] Further, preferably, the lifting drive device 312 is a cylinder or a linear motor.

[0099] Further, preferably, the driving end of the lifting drive device 312 is connected to the transfer member 313, and the transfer member 313 is connected to the aforementioned first support member 34, so that the two side positioning mechanisms can be driven to move synchronously through the same lifting device.

[0100] In this embodiment, preferably, Figures 14 to 16As shown, the cell positioning mechanism 4 includes a cell positioning driving device 41 and a cell positioning member 42 ; wherein the driving end of the cell positioning driving device 41 is connected to the cell positioning member 42 and is used to drive the cell positioning member 42 to move along a first direction.

[0101] According to the structure described above, when the first end, the second end and both side portions of the shell 7 are positioned, the battery cell positioning drive device 41 is used to drive the battery cell positioning member 42 to move toward the battery cell 10 side, so that the battery cell positioning member 42 presses the first end of the battery cell 10, and the other end of the battery cell 10 is positioned by the second end positioning mechanism 22, thereby achieving the positioning of the battery cell 10.

[0102] Further, preferably, the battery cell positioning drive device 41 is a cylinder or a linear motor.

[0103] In this embodiment, preferably, Fig.14 As shown, the battery cell positioning mechanism 4 also includes a fourth support member 43, the fixed end of the battery cell positioning drive device 41 is fixed to the fourth support member 43, the battery cell positioning member 42 is slidably connected to the fourth support member 43, and preferably, the fourth support member 43 is provided with a third slide rail 44, the battery cell positioning member 42 is provided with a third slider 45, and the third slider 45 and the third slide rail 44 are slidably connected.

[0104] According to the structure described above, the fourth support member 43 plays a role in supporting the cell positioning drive device 41 ; the cell positioning member 42 is slidably connected to the fourth support member 43 , playing a role in supporting and guiding the cell positioning member 42 .

[0105] Further, preferably, the cell positioning mechanism 4 further includes a plurality of adapters 46 , and the fourth support member 43 is connected to the cell positioning member 42 via the plurality of adapters 46 ; the plurality of adapters 46 can be designed as a cuboid structure for ease of processing, manufacturing and assembly.

[0106] Further, preferably, the cell positioning member 42 is formed with a waist-shaped through hole 421 , and the adapter 46 disposed near the cell positioning member 42 is formed with a threaded hole, so that the position of the cell positioning member 42 can be adjusted through the waist-shaped through hole 421 .

[0107] Further, preferably, the battery cell positioning member 42 is L-shaped, the vertical structure of which is provided with the aforementioned waist-shaped through hole 421 , and the horizontal structure of which is used for pressing the battery cell 10 .

[0108] In this embodiment, preferably, Figure 1As shown, the welding positioning system for the aluminum shell battery cover plate and the battery cell connecting piece also includes a support frame 5, and part of the structure of the shell side positioning mechanism 3 and the shell end positioning mechanism 2 are installed on the support frame 5, and preferably, the fixed end of the lifting drive device 312 of the shell side positioning mechanism 3 and the fixed end of the second drive device 221 of the second end positioning mechanism 22 are fixed on the support frame 5.

[0109] According to the structure described above, it can be known that the shell side positioning mechanism 3 and part of the structure of the shell end positioning mechanism 2 are integrated on the support frame 5, which has a high degree of integration and is convenient for overall movement.

[0110] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A welding positioning system for an aluminum shell battery cover plate and a battery cell connecting piece, used for positioning welding of an intermediate product of a battery, wherein the intermediate product of the battery comprises a shell, a battery cell, a connecting piece, a first cover plate and a second cover plate, wherein the battery cell is installed in the shell, and the pole ear of the battery cell is connected to the connecting piece; an opening is formed at a first end of the shell along a first direction, and the first cover plate to be welded is provided; a second cover plate is welded at a second end of the shell opposite to the first end, wherein: The aluminum shell battery cover plate and the battery cell connection piece welding positioning system comprises: a placement fixture, a shell end positioning mechanism, a shell side positioning mechanism, a battery cell positioning mechanism and a welding device; wherein the placement fixture is used to place the shell; the shell end positioning mechanism is used to position the first end of the shell, the second cover plate and the first cover plate to be welded; The battery cell positioning mechanism is used to position the battery cell in the shell along the first direction; the shell side positioning mechanism is used to position the two sides of the shell placed on the placement fixture along the second direction; the welding device is used to weld the connecting piece connected to the battery cell after positioning to the first cover plate.

2. The welding positioning system for the aluminum shell battery cover plate and the battery cell connecting piece according to claim 1 is characterized in that: The shell end positioning mechanism includes a first end positioning mechanism and a second end positioning mechanism; wherein the first end positioning mechanism is used to position the first end of the shell and a first cover plate placed parallel to its opening direction, and the second end positioning mechanism is used to position the second cover plate of the shell.

3. The welding positioning system for the aluminum shell battery cover plate and the battery core connecting piece according to claim 2 is characterized in that: The first end positioning mechanism comprises a first positioning member, the first positioning member is formed with a first positioning groove, and the opening of the first positioning groove faces one side of the shell, and the first end of the shell abuts against the inner wall of the first positioning groove; The first positioning member is formed with a second positioning groove, and the opening direction of the second positioning groove is perpendicular to the opening direction of the first end of the shell, and the first cover plate is positioned in the second positioning groove.

4. The welding positioning system for the aluminum shell battery cover plate and the battery cell connecting piece according to claim 2, characterized in that: The second end positioning mechanism includes a second driving device and a second positioning member; wherein the output end of the second driving device is connected to the second positioning member to drive the second positioning member to move along the first direction; the second positioning member is slidably connected to the placement fixture.

5. The welding positioning system for the aluminum shell battery cover plate and the battery core connecting piece according to claim 1, characterized in that: The housing side positioning mechanism includes a lifting mechanism, a first side positioning mechanism and a second side positioning mechanism; Wherein, the first side positioning mechanism and the second side positioning mechanism are respectively connected to the lifting mechanism, and the lifting mechanism is used to drive the first side positioning mechanism and the second side positioning mechanism to rise and fall along the thickness direction of the shell; The first side positioning mechanism is used to position one side of the housing, and the second side positioning mechanism is used to position the other opposite side of the housing.

6. The welding positioning system for the aluminum shell battery cover plate and the battery cell connecting piece according to claim 5, characterized in that: The first side positioning mechanism comprises a first side driving device and a first side positioning member; wherein the output end of the first side driving device is connected to the first side positioning member to drive the first side positioning member to move along the second direction; The second side positioning mechanism includes a second side driving device and a second side positioning member; wherein the output end of the second side driving device is connected to the second side positioning member for driving the second side positioning member to move along the second direction.

7. The welding positioning system for the aluminum shell battery cover plate and the battery cell connecting piece according to claim 6, characterized in that: The shell side positioning mechanism also includes a first supporting member, the fixed end of the first side driving device is fixed to the first supporting member, and the first side positioning member and the second side positioning member are respectively slidably connected to the first supporting member.

8. The welding positioning system for the aluminum shell battery cover plate and the battery cell connecting piece according to claim 5, characterized in that: The lifting mechanism includes a second supporting member, a lifting drive device and a transition member; wherein the fixed end of the lifting drive device is fixed to the second supporting member, and the driving end of the lifting drive device is connected to the first side positioning mechanism and the second side positioning mechanism through the transition member; the transition member is slidably connected to the second supporting member.

9. The welding positioning system for the aluminum shell battery cover plate and the battery cell connecting piece according to claim 1, characterized in that: The cell positioning mechanism comprises a cell positioning drive device and a cell positioning component; wherein a driving end of the cell positioning drive device is connected to the cell positioning component and is used to drive the cell positioning component to move along the first direction.

10. The welding positioning system for the aluminum shell battery cover plate and the battery core connecting piece according to claim 9, characterized in that: The battery cell positioning mechanism further includes a fourth supporting member, a fixed end of the battery cell positioning drive device is fixed to the fourth supporting member, and the battery cell positioning member is slidably connected to the fourth supporting member.

11. The welding positioning system for aluminum shell battery cover plate and battery core connecting piece according to any one of claims 1 to 10, characterized in that: The aluminum shell battery cover plate and the battery cell connecting piece welding positioning system also includes a support frame, and the shell side positioning mechanism and part of the structure of the shell end positioning mechanism are installed on the support frame.

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