Welding tray and tab welding production line

Abstract

According to the welding tray and the tab welding production line, the size of a naked battery cell space formed by a naked battery cell positioning assembly can be changed so as to adapt to the size of a remodeled naked battery cell. Meanwhile, due to the fact that the adapter piece positioning piece is detachably arranged at the assembling position, when the adapter piece needs to be replaced, only the corresponding adapter piece positioning piece needs to be replaced. Therefore, when the welding tray can adapt to the remodeling production of various types of bare battery cells, switching pieces and tab welding production lines, the welding tray does not need to be integrally replaced, only the switching piece positioning pieces need to be replaced, and the remodeling cost is greatly reduced. According to the welding tray, when the welding tray can adapt to various types of bare battery cells and switching pieces, and during remodeling production of a tab welding production line, the whole welding tray does not need to be replaced, only the switching piece positioning piece needs to be replaced, and the remodeling cost is greatly reduced.

Description

Technical Field

[0001] The present application relates to the field of battery manufacturing technology, and in particular to a welding tray and a tab welding production line. Background Art

[0002] For multiple bare cells, the tabs of the bare cells need to be paired and welded. Specifically, the tabs of the same polarity of two bare cells are stacked together with the same adapter, and then the tabs and the adapter are welded to achieve the connection of the tabs of the same polarity. In the actual production process, a welding tray is used to support the bare cells and adapters for transportation on the tab welding production line. Most conventional welding trays can only match specific models of bare cells and adapters. When the bare cells and adapters are changed, the welding tray needs to be replaced, which greatly increases the changeover cost of the tab welding production line. Utility Model Content

[0003] Based on this, it is necessary to provide a welding pallet and a tab welding production line to address the problem that the welding pallet has poor versatility and increases the conversion cost of the tab welding production line.

[0004] A welding tray, comprising:

[0005] A supporting plate, comprising a supporting surface for supporting the bare battery cell, wherein an assembly position is arranged on the supporting surface;

[0006] A bare cell positioning assembly is provided on the supporting surface, and the assembly position is arranged between two groups of the bare cell positioning assemblies along a first direction; each group of the bare cell positioning assemblies forms a bare cell positioning space, and the size of the bare cell positioning space can be changed in the first direction and / or in a second direction perpendicular to the first direction; and

[0007] The adapter plate positioning member is detachably assembled at the assembly position and is used for positioning and installing the adapter plate.

[0008] In some embodiments, the assembly position includes an assembly hole provided on the supporting surface, and the adapter plate positioning member is detachably assembled in the assembly hole.

[0009] In some embodiments, the adapter plate positioning member has a first surface exposed by the assembly hole, and the first surface is arranged adjacent to the supporting surface; a positioning groove is arranged inwardly on the first surface, and the positioning groove is used to position and install the adapter plate.

[0010] In some embodiments, the adapter plate positioning member has a second surface disposed opposite to the first surface, and the adapter plate positioning member further includes a welding avoidance hole, and the welding avoidance hole passes through the second surface and a portion of the bottom of the positioning groove.

[0011] In some embodiments, the bare cell positioning assembly includes a first positioning member, a second positioning member, and a third positioning member that together enclose the bare cell positioning space, the first positioning member and the assembly position are spaced apart in the first direction; the second positioning member and the third positioning member are spaced apart in the second direction;

[0012] Wherein, the first positioning member can move away from or approach the assembly position along the first direction; and / or the second positioning member and the third positioning member can move relative to each other in the second direction.

[0013] In some embodiments, a first strip-shaped hole extending along the first direction is provided on the supporting surface, and the first positioning member is movably provided along the extending direction of the first strip-shaped hole; and / or,

[0014] The supporting surface is provided with a second strip-shaped hole extending along the second direction, and the second positioning member is movably provided along the extending direction of the second strip-shaped hole; and / or,

[0015] The supporting surface is provided with a third strip-shaped hole extending along the second direction, and the third positioning member is movably arranged along the extending direction of the third strip-shaped hole.

[0016] In some embodiments, the welding tray includes at least two adapter plate positioning members, each of which is used to position and install adapter plates of different specifications;

[0017] The welding tray can selectively select one of the adapter plate positioning components to be assembled with the assembly position.

[0018] A tab welding production line, comprising:

[0019] A welding tray as described in any of the above embodiments;

[0020] A conveyor line, used for conveying the welding tray;

[0021] The welding equipment is arranged along the conveying direction of the conveying line and is used for welding the pole ears and the adapter sheets on the welding tray.

[0022] In some embodiments, the conveying line is arranged to extend in a straight line direction;

[0023] There are multiple welding devices, all of which are arranged in sequence along the conveying direction of the conveyor line, and adjacent welding devices are arranged on different sides of the conveyor line.

[0024] In some embodiments, the welding device includes a welding arm, which can be arranged facing the supporting surface, and the welding arm has a blowing part, which is used to blow gas to the tabs of the bare battery cells located on the welding tray.

[0025] In the above-mentioned welding tray and tab welding production line, the size of the bare cell space formed by the bare cell positioning assembly can be changed to adapt to the size of the bare cell after the model change. At the same time, since the adapter positioning member is detachably arranged in the assembly position, when the adapter needs to be changed, it is only necessary to replace the corresponding adapter positioning member. In this way, the welding tray can adapt to various types of bare cells and adapters. When the tab welding production line is changed, there is no need to replace the welding tray as a whole, only the adapter positioning member needs to be replaced, which greatly reduces the cost of the changeover. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0027] Figure 1 This is a system schematic diagram of a tab welding production line according to some embodiments of the present application.

[0028] Figure 2 This is a schematic diagram of the use of a welding tray after the tabs are welded in some embodiments of the present application.

[0029] Figure 3 This is a schematic diagram of the cooperation between the welding equipment and the welding tray in some embodiments of the present application.

[0030] Figure 4 A practical schematic diagram of welding equipment according to some embodiments of the present application.

[0031] Figure 5 This is a schematic diagram of the structure of a welding tray according to some embodiments of the present application.

[0032] The reference numerals in the specific implementation manner are as follows:

[0033] 100. Tab welding production line; 1. bare cell; 1a. tab; 2. adapter; 10. welding tray; X, first direction; Y, second direction; 11. supporting plate; m1, supporting surface; L, assembly position; t1, first strip hole; t2, second strip hole; t3, third strip hole; 12. bare cell positioning assembly; s, bare cell positioning space; 12a, first positioning piece; 12b, second positioning piece; 12c, third positioning piece; 13. adapter positioning piece; m2, first surface; c, positioning groove; q, welding avoidance hole; 20. conveyor line; w1, loading position; w2, positive tab welding position; w3, negative tab welding position; w4, unloading position; 30. welding equipment; 31. welding arm; 31a, blowing section; 32. welding base; h, welding point. DETAILED DESCRIPTION

[0034] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0035] In the description of the present application, it should be understood that terms such as “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships, if any, are 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, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0036] In addition, if present, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0037] In this application, unless otherwise clearly specified and limited, if any, the terms "installed", "connected", "connected", "fixed" and the like 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0038] In the present application, if it appears, unless otherwise clearly specified and limited, a first feature “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature “above”, “above” and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature “below”, “below” and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0039] It should be noted that, if present, when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0040] In response to the problem pointed out in the background technology that most welding trays can only match specific models of bare battery cells and adapters, and when the models of bare battery cells and adapters are changed, the welding tray needs to be replaced, which increases the replacement cost of the tab welding production line. A welding tray and a tab welding production line are provided.

[0041] The tab welding production line of the embodiment of the present application is used to weld the tabs of multiple JR battery cells, where JR is the abbreviation of bare battery cells. Bare battery cells, also known as electrode assemblies, are usually obtained by winding or laminating after stacking positive electrode sheets, negative electrode sheets, and isolation membranes. Bare battery cells have tabs, and the bare battery cells are connected to the circuit outside the battery cells through their tabs. In addition to bare battery cells and adapters, the battery cells may also include a shell, and the bare battery cells are assembled into the shell of the battery cells. Of course, in other embodiments, aluminum-plastic film can also be wrapped around the bare battery cells to obtain soft-pack battery cells. Regarding the structure of battery cells and bare battery cells, please refer to the prior art. The adapter is used for conduction, and it is usually made of metal.

[0042] In some embodiments, Figure 1 As shown, the tab welding production line 100 includes a conveyor line 20, a welding tray 10 and a welding device 30. The conveyor line 20 is used to convey the welding tray 10. The welding device 30 is arranged along the conveying direction of the conveyor line 20, and is used to weld the tab 1a and the adapter 2 on the welding tray 10. Among them, the conveyor line 20 can be but not limited to a belt drive belt, a drive roller, a drive chain, etc. The welding device 30 can be but not limited to an ultrasonic welding device 30, a laser welding device 30, etc.

[0043] Combination Figure 2 It is understood that before assembling the battery cell, two JRs are first paired as a group with the pole ears 1a on the welding tray 10. Specifically, two adapters 2 (one is a positive adapter and the other is a negative adapter) are placed in corresponding positions, and the two JRs are placed opposite each other on the welding tray 10, and the positive pole ears of the two JRs are overlapped on the positive adapter, and the negative pole ears of the two JRs are overlapped on the negative adapter, so that when the battery cell is assembled later, the adapter 2 can be used to electrically connect the poles on the battery cell. Then the welding tray 10 with the paired pole ears 1a is loaded onto the conveyor line 20, and the welding tray 10 passes through each welding station in turn. The welding equipment 30 welds the pole ears 1a and the adapter 2 at the corresponding positions at each welding station to form a weld h. After welding is completed, the welding tray 10 carries the bare battery cell 1 to unload at the unloading position w4.

[0044] Specifically, in one embodiment, the conveyor line 20 is extended in a straight line direction. In this case, the conveyor line 20 occupies a small space, which can reduce the site area requirement of the welding equipment 30 and improve the space utilization rate of the factory.

[0045] It can be understood that along the conveying direction of the conveyor line 20, the tab welding production line 100 is equipped with a loading position w1, a unloading position w4, a positive tab welding position w2, and a negative tab welding position w3. The positive tab welding position w2 and the negative tab welding position w3 are correspondingly provided with welding equipment 30. Since each welding tray 10 has two positive tabs and two negative tabs, under normal circumstances, two positive tab welding positions w2 and two negative tab welding positions w3 are correspondingly provided, and each positive tab and each negative tab are welded with the adapter 2 at a welding position respectively. The loading position w1 and the unloading position w4 are located between all welding positions. Among them, the loading position w1 is for loading the welding tray 10 carrying the paired double JR on the conveyor line 20. The unloading position w4 is for unloading the welding tray 10 carrying the double JR after the tab 1a is welded on the conveyor line 20. The loading position w1 and the unloading position w4 can be correspondingly arranged with a transfer manipulator for carrying the welding tray 10.

[0046] Further to the embodiments, refer to Figure 1There are multiple welding devices 30, all of which are arranged in sequence along the conveying direction of the conveyor line 20, and adjacent welding devices 30 are arranged on different sides of the conveyor line 20.

[0047] It is understandable that when the welding tray 10 moves along the conveyor line 20 for linear transport, the arrangement orientation of the positive and negative pole ears on it will not change, and the two pole ears 1a of the same polarity are arranged relative to each other in the direction perpendicular to the conveying direction of the conveyor line 20, then the two adjacent welding devices 30 arranged on different sides of the conveyor line 20 are used to weld the positive and negative pole ears, respectively. Specifically, there are four welding devices 30, and the two welding devices 30 arranged near the upper material position w1 are used to weld the positive pole ears (or negative pole ears), that is, the two welding stations arranged near the upper material position w1 are the positive pole ear welding position w2 (or the negative pole ear welding position w3). The two welding devices 30 arranged near the lower material position w4 are used to weld the negative pole ears (or positive pole ears), that is, the two welding stations arranged near the lower material position w4 are the negative pole ear welding position w3 (or the positive pole ear welding position w2).

[0048] Of course, in other embodiments, the welding devices 30 may also be arranged according to other schemes, for example, two welding devices 30 are adjacent and arranged on the same side of the conveyor line 20, or another two welding devices 30 are adjacent and arranged on the other side of the conveyor line 20. Those skilled in the art can make flexible arrangements.

[0049] Of course, in other embodiments, the conveyor line 20 may also convey along a non-straight route, for example, along a U-shaped route, an S-shaped route, or a circular route.

[0050] In some embodiments, reference Figure 3 and Figure 4 The welding device 30 includes a welding arm 31 , which can be arranged facing the supporting surface m1 , and has a blowing portion 31 a , which is used to blow gas toward the tab 1 a of the bare cell 1 on the welding tray 10 .

[0051] During welding, the welding end of the welding arm 31 is aligned with the overlapping portion of the pole tab 1a and the adapter, and the welding arm 31 welds the overlapping portion. Since the pole tab 1a is overlapped on the adapter 2, the upper pole tab 1a layer is prone to warping. If the warping degree is too large, it is easy to cause the pole tab 1a to be folded during welding. During welding, the number of layers of the pole tab 1a increases, causing the JR welding to be scrapped. At this time, during the welding process, the blowing part 31a is used to blow air to the surface of the pole tab 1a to smooth the pole tab 1a, avoid folding the pole tab 1a during welding, and improve the JR welding yield.

[0052] The blowing part 31a may include a blowing passage disposed in the welding arm 31, or may include a blowing pipe disposed outside the welding arm 31. The specific form is not limited, as long as it can blow air toward the tab 1a and achieve a good smoothing effect. The blowing part 31a may also include a blowing valve, which controls external gas to enter the blowing passage or the blowing pipe.

[0053] The welding tray 10 according to the embodiment of the present application is described in detail below.

[0054] Reference Figure 5 The welding tray 10 provided in the embodiment of the present application includes a supporting plate 11, a bare cell positioning assembly 12 and an adapter plate positioning member 13. The supporting plate 11 includes a supporting surface m1 for supporting the bare cell 1, and an assembly position L is provided on the supporting surface m1. The bare cell positioning assembly 12 is provided on the supporting surface m1, and the assembly position L is arranged between two groups of bare cell positioning assemblies 12 along the first direction X. Each group of bare cell positioning assemblies 12 forms a bare cell positioning space s, and the size of the bare cell positioning space s can be changed in the first direction X and / or in a second direction Y perpendicular to the first direction X. The adapter plate positioning member 13 is detachably assembled at the assembly position L, and is used to position and install the adapter plate 2.

[0055] In actual application, the supporting plate 11 is carried on the conveyor line 20. The supporting surface m1 is a plane, and when the bare cell 1 is located in the bare cell positioning space s, the large surface of the bare cell 1 is in contact with the supporting surface m1. The positive and negative ears of the bare cell 1 are located on the same side thereof, and are arranged facing the assembly position L, and can extend out of the bare cell positioning space s so as to overlap with the adapter 2 at the assembly position L. Optionally, the bare cell positioning assembly 12 forms a bare cell positioning space s open to the assembly position L, so as to facilitate the ear 1a of the bare cell 1 to extend toward the assembly position L. Of course, the bare cell positioning space s formed by the bare cell positioning assembly 12 can also be arranged to be non-open, as long as the ear 1a is allowed to extend toward the assembly position L.

[0056] The bare cell positioning assembly 12 is disposed on the supporting surface m1, and is movable relative to the supporting surface m1 to change the size of the bare cell positioning space s enclosed by it, so that the size of the bare cell positioning space s can adapt to the replacement of the bare cell 1. Specifically, the bare cell positioning assembly 12 can change the size of the bare cell positioning space s in the first direction X and / or the second direction Y. In actual application, the supporting plate 11 can be a rectangular plate, the first direction X can correspond to the length direction of the supporting plate 11, and the second direction Y can correspond to the width direction of the supporting plate 11.

[0057] The assembly position L is set on the supporting surface m1, and is used to position and install the adapter positioning member 13. There are usually two assembly positions L, and both assembly positions L are arranged between two groups of bare cell positioning components 12, one of which is used to assemble the adapter positioning member 13 for positioning the positive adapter, and the other assembly position L is used to assemble the adapter positioning member 13 for positioning the negative adapter.

[0058] The adapter plate positioning member 13 is detachably installed at the assembly position L, and the disassembly connection method of the two is not limited, and can be but not limited to screw fastening connection, clamping, etc. When the adapter plate 2 is changed, the existing adapter plate positioning member 13 is removed and replaced with a new adapter plate positioning member 13 to support the positioning and installation of the new model adapter plate 2 on the welding tray 10.

[0059] The size of the cell space of the bare cell 1 formed by the bare cell positioning assembly 12 of the above-mentioned welding tray 10 can be changed to adapt to the size of the bare cell 1 after the model change. At the same time, since the adapter plate positioning member 13 is detachably arranged at the assembly position L, when the adapter plate 2 needs to be changed, it is only necessary to replace the corresponding adapter plate positioning member 13. In this way, the welding tray 10 can adapt to various models of bare cells 1 and adapter plates 2. When the tab welding production line 100 is changed to a new model, there is no need to replace the welding tray 10 as a whole, and only the adapter plate positioning member 13 needs to be replaced, which greatly reduces the cost of model change.

[0060] In some embodiments, reference Figure 5 The assembly position L includes an assembly hole provided on the supporting surface m1, and the adapter plate positioning member 13 is detachably assembled in the assembly hole. The assembly hole is generally extended along the thickness direction of the supporting plate 11 and is provided on the supporting plate 11. It can be a blind hole or a through hole, and the assembly hole at least passes through the supporting surface m1. The adapter plate positioning member 13 is installed in the assembly hole. The assembly position L is formed by the assembly hole, and the structure is simple and easy to implement.

[0061] Specifically, the assembly hole can be a stepped hole, and the adapter plate positioning member 13 is matched with the stepped hole and is detachably fixed on the stepped surface of the stepped hole by a fastener.

[0062] In some embodiments, reference Figure 5 The adapter plate positioning member 13 has a first surface m2 exposed by the assembly hole, and the first surface m2 is disposed adjacent to the supporting surface m1. A positioning groove c is disposed inwardly on the first surface m2, and the positioning groove c is used to position and install the adapter plate 2.

[0063] The first surface m2 and the supporting surface m1 are located on the same side of the supporting plate 11. In practical applications, the supporting surface m1 is the upper surface of the supporting plate 11, and the first surface m2 is the upper surface of the adapter plate positioning member 13. The shape of the positioning groove c is adapted to the shape of the adapter plate 2. For different types of adapter plate positioning members 13, the shapes of the positioning groove c thereon may be different to match different types of adapter plates 2.

[0064] At this time, the adapter plate 2 is positioned and installed by the positioning groove c provided on the adapter plate positioning member 13, and the positioning is reliable and easy to operate.

[0065] In some embodiments, reference Figure 5 The adapter plate positioning member 13 has a second surface (not shown) disposed opposite to the first surface m2. The adapter plate positioning member 13 also includes a welding avoidance hole q, which passes through the second surface and a portion of the bottom of the positioning groove c.

[0066] It can be understood that the assembly hole is a through hole, which exposes the second surface of the adapter plate positioning member 13. Figure 3 and Figure 4 It is understood that the second surface is the lower surface of the welding piece positioning member. The welding equipment 30 includes a welding arm 31 and a welding base 32. The welding base 32 is provided with a welding avoidance hole q from the second surface from bottom to top, and abuts against the lower surface of the adapter 2 to effectively support the welding part of the adapter 2. Then the welding arm 31 faces the first surface m2 from top to bottom, and welds the adapter 2 supported by the welding base 32 and the pole lug 1a thereon. The welding arm 31 and the welding base 32 jointly clamp the pole lug 1a and the adapter 2 so that the welding of the two is reliable.

[0067] At this time, the provision of the welding avoidance hole q facilitates the welding of the adapter plate 2 and the tab 1a and improves the welding reliability of the two.

[0068] It is possible that each adapter plate positioning member 13 is provided with two welding avoidance holes q, one of which is used for allowing the welding base 32 to pass through and support the corresponding welding position of the adapter plate 2 when the pole lug 1a of one of the JRs is welded. The other welding avoidance hole q is used for allowing the welding base 32 to pass through and support the corresponding welding position of the adapter plate 2 when the pole lug 1a of the other JR is welded.

[0069] Of course, in other embodiments, if the welding device 30 is not equipped with a welding base 32, the welding avoidance hole q may not be provided on the adapter plate positioning member 13, and the bottom of the positioning groove c may be used to support the welding of the adapter plate 2.

[0070] In some embodiments, reference Figure 5The bare cell positioning assembly 12 includes a first positioning member 12a, a second positioning member 12b and a third positioning member 12c which together enclose a bare cell positioning space s. The first positioning member 12a and the assembly position L are spaced apart in the first direction X, and the second positioning member 12b and the third positioning member 12c are spaced apart in the second direction Y. The first positioning member 12a can move away from or close to the assembly position L along the first direction X, and / or the second positioning member 12b and the third positioning member 12c can move relative to each other in the second direction Y.

[0071] The first positioning member 12a, the second positioning member 12b and the third positioning member 12c can be bar-shaped positioning blocks, and the large surface of the positioning block is positioned against the side surface of the bare battery cell 1, and the contact area is large. The first positioning member 12a is used to position the side surface of the bare battery cell 1 away from the assembly position L in the first direction X, and the second positioning member 12b and the third positioning member 12c are respectively positioned on the two end surfaces of the bare battery cell 1 in the second direction Y.

[0072] The first positioning member 12a can be movably arranged in the first direction X. For example, the supporting member is provided with a plurality of mounting holes in the first direction X, and the first positioning member 12a can be selectively installed in one of the mounting holes. In this way, the distance between the first positioning member 12a and the assembly position L in the first direction X can be changed to adapt to the size change of the bare battery cell 1 in the first direction X.

[0073] The second positioning member 12b and the third positioning member 12c can move relative to each other in the second direction Y. At least one of the second positioning member 12b and the third positioning member 12c can move in the second direction Y to change the distance between them during movement, thereby adapting to the size change of the bare cell 1 in the second direction Y.

[0074] At this time, the first positioning member 12a, the second positioning member 12b, and the third positioning member 12c are used to form a bare cell positioning space s, and the bare cell positioning space s is open toward the assembly position L, which not only facilitates the extension of the pole ear 1a to the assembly position L, but also simplifies the structure of the bare cell positioning assembly 12 and reduces the cost of the bare cell positioning assembly 12.

[0075] In other embodiments, the bare cell positioning assembly 12 may also adopt other structures, and those skilled in the art may perform conventional designs according to conventional means, which are not listed here exhaustively.

[0076] Specifically in some embodiments, refer to Figure 5, a first strip hole t1 extending along the first direction X is provided on the supporting surface m1, and the first positioning member 12a is movably provided along the extending direction of the first strip hole t1. The first strip hole t1 can penetrate the supporting surface m1 and the other opposite surface of the supporting plate 11 from top to bottom. The first positioning member 12a can be locked with the first strip hole t1 by a locking screw, and the position of the first positioning member 12a on the first strip hole t1 is changed so that the position of the first positioning member 12a is changed in the first direction X. At this time, the scheme for moving the first positioning member 12a is simple and low in cost.

[0077] Specifically in some embodiments, refer to Figure 5 , a second strip hole t2 extending along the second direction Y is provided on the supporting surface m1, and the second positioning member 12b is movably provided along the extending direction of the second strip hole t2. Similarly, the second strip hole t2 can penetrate the supporting surface m1 and the other opposite surface of the supporting plate 11 from top to bottom. The second positioning member 12b can be locked with the second strip hole t2 by a locking screw, and the position of the second positioning member 12b on the second strip hole t2 is changed so that the position of the second positioning member 12b in the second direction Y is changed. At this time, the scheme for moving the second positioning member 12b is simple and low in cost.

[0078] Specifically in some embodiments, refer to Figure 5 , a third strip hole t3 extending along the second direction Y is provided on the supporting surface m1, and the third positioning member 12c is movably provided along the extending direction of the third strip hole t3. Similarly, the third strip hole t3 can penetrate the supporting surface m1 and the other opposite surface of the supporting plate 11 from top to bottom. The third positioning member 12c can be locked with the third strip hole t3 by a locking screw, and the position of the third positioning member 12c on the third strip hole t3 is changed so that the position of the third positioning member 12c in the second direction Y is changed. At this time, the scheme for moving the third positioning member 12c is simple and low in cost.

[0079] In practical applications, each welding tray 10 may be configured with only one type of adapter plate positioning member 13 as a sales unit or a production unit, and different types of adapter positioning members may be separately used as sales units or production units.

[0080] In some embodiments, the welding tray 10 includes at least two adapter plate positioning members 13, each adapter plate positioning member 13 is used to position and install adapter plates 2 of different specifications. The welding tray 10 can select one adapter plate positioning member 13 to be assembled with the assembly position L. That is, the same welding tray 10 is configured with multiple adapter plate positioning members 13 as a sales unit or a production unit.

[0081] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0082] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A welding tray, characterized in that: The welding tray comprises: A supporting plate (11) comprising a supporting surface (m1) for supporting a bare battery cell, wherein an assembly position (L) is provided on the supporting surface (m1); A bare cell positioning assembly (12) is arranged on the supporting surface (m1); the assembly position (L) is arranged between two groups of the bare cell positioning assemblies (12) along a first direction (X); each group of the bare cell positioning assemblies (12) forms a bare cell positioning space (s), and the size of the bare cell positioning space (s) can be changed in the first direction (X) and / or in a second direction (Y) perpendicular to the first direction (X); and The adapter plate positioning member (13) is detachably mounted on the assembly position (L) and is used for positioning and installing the adapter plate.

2. The welding tray according to claim 1, characterized in that: The assembly position (L) comprises an assembly hole provided on the supporting surface (m1), and the adapter plate positioning member (13) is detachably assembled in the assembly hole.

3. The welding tray according to claim 2, characterized in that: The adapter plate positioning member (13) has a first surface (m2) exposed by the assembly hole, and the first surface (m2) is arranged adjacent to the supporting surface (m1); a positioning groove (c) is concavely arranged on the first surface (m2), and the positioning groove (c) is used to position and install the adapter plate.

4. The welding tray according to claim 3, characterized in that: The adapter plate positioning member (13) has a second surface disposed opposite to the first surface (m2), and the adapter plate positioning member (13) further comprises a welding avoidance hole (q), wherein the welding avoidance hole (q) penetrates the second surface and a portion of the bottom of the positioning groove (c).

5. The welding tray according to any one of claims 1 to 4, characterized in that: The bare cell positioning assembly (12) comprises a first positioning member (12a), a second positioning member (12b) and a third positioning member (12c) which together enclose the bare cell positioning space (s), wherein the first positioning member (12a) and the assembly position (L) are spaced apart in the first direction (X); the second positioning member (12b) and the third positioning member (12c) are spaced apart in the second direction (Y); Wherein, the first positioning member (12a) can move away from or approach the assembly position (L) along the first direction (X); and / or the second positioning member (12b) and the third positioning member (12c) can move relative to each other in the second direction (Y).

6. The welding tray according to claim 5, characterized in that: The supporting surface (m1) is provided with a first strip hole (t1) extending along the first direction (X), and the first positioning member (12a) is movably arranged along the extending direction of the first strip hole (t1); and / or, The supporting surface (m1) is provided with a second strip hole (t2) extending along the second direction (Y), and the second positioning member (12b) is movably arranged along the extending direction of the second strip hole (t2); and / or, The supporting surface (m1) is provided with a third strip-shaped hole (t3) extending along the second direction (Y), and the third positioning member (12c) is movably arranged along the extending direction of the third strip-shaped hole (t3).

7. The welding tray according to claim 1, characterized in that: The welding tray comprises at least two types of adapter plate positioning members (13), each type of adapter plate positioning member (13) is used for positioning and installing adapter plates of different specifications; The welding tray can selectively select one of the adapter plate positioning components (13) to be assembled with the assembly position (L).

8. A tab welding production line, characterized in that: include: A welding tray as claimed in any one of claims 1 to 7; A conveying line (20) for conveying the welding tray; The welding equipment (30) is arranged along the conveying direction of the conveying line (20) and is used for welding the tabs and the adapter plates on the welding tray.

9. The tab welding production line according to claim 8, characterized in that: The conveying line (20) is extended along a straight line direction; A plurality of welding devices (30) are configured, and all of the welding devices (30) are arranged in sequence along the conveying direction of the conveying line (20), and adjacent welding devices (30) are arranged on different sides of the conveying line (20).

10. The tab welding production line according to claim 8, characterized in that: The welding device (30) comprises a welding arm (31), the welding arm (31) can be arranged facing the supporting surface (m1), the welding arm (31) has a blowing part (31a), and the blowing part (31a) is used to blow gas to the tabs of the bare battery cell located on the welding tray.

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