Battery welding jig

Abstract

According to the battery welding jig, the multiple protruding structures are arranged on the blocking piece, and when the battery is fixed to the bottom table, the welding edge of the battery abuts against the multiple protruding structures of the blocking piece. Compared with a flat and straight surface, the positioning surface formed by the plurality of bulge structures has the advantages that the uniformity of welding seams is easier to control, the consistency of the welding seams between the upper cover and the bottom shell in the welding process can be ensured, and the occurrence of undesirable welding phenomena such as explosion welding and missing welding is greatly reduced.

Description

Technical Field

[0001] This application relates to the technical field of battery production, and particularly to a battery welding jig. Background Art

[0002] The upper cover and the bottom case of a battery are generally connected through a welding process, which is one of the processes in the battery production process. Usually, a laser welding machine can be used to complete the welding of the upper cover and the bottom case. Before welding, it is necessary to fix the battery through a jig. There are various types of batteries, such as square batteries and cylindrical batteries. Among them, for square thin-shell batteries, there are the following problems in the welding process of the upper cover and the bottom case: Since the wall thickness of the upper cover and the bottom case is relatively thin (for example, 0.1 mm), it is not easy to control the weld seam uniformity, and it is easy to cause welding defects such as explosion welding and missed welding. Summary of the Utility Model

[0003] To solve the problem that it is not easy to control the weld seam uniformity during the welding process of the upper cover and the bottom case of the battery, and it is easy to cause welding defects such as explosion welding and missed welding, this application provides a battery welding jig.

[0004] In the first aspect of this application, a battery welding jig is provided, including:

[0005] A bottom table for carrying the battery; and

[0006] A stopper connected to the bottom table, and the stopper is provided with a plurality of protruding structures;

[0007] When the battery is fixed on the bottom table, the welding edge of the battery abuts against the plurality of protruding structures.

[0008] Optionally, the plurality of protruding structures are arranged at intervals along a first direction, and the first direction is parallel to the welding edge.

[0009] Optionally, the protruding structure is a convex strip, and the convex strip extends along a second direction, and the second direction is perpendicular to the first direction.

[0010] Optionally, it further includes:

[0011] A clamping member. When the battery is fixed on the bottom table, the stopper abuts against the first surface of the battery, and the clamping member abuts against the second surface of the battery to clamp and fix the battery, and the second surface is opposite to the first surface.

[0012] Optionally, it further includes:

[0013] A first moving mechanism, and the clamping member can move in the direction of the stopper's resistance through the first moving mechanism;

[0014] The first moving mechanism includes a first fixing member and a first sliding member. The first fixing member is fixedly connected to the base, the first sliding member is slidably connected to the first fixing member, and the clamping member is fixedly connected to the first sliding member.

[0015] Optionally, the first moving mechanism further includes an elastic member. The first sliding member can drive the clamping member to move towards the direction close to the stopper when the elastic member returns to its original length.

[0016] Optionally, it further includes:

[0017] A second moving mechanism, through which the clamping member can move in a direction perpendicular to the base;

[0018] The second moving mechanism includes a second fixing member and a second sliding member. The second fixing member is fixedly connected to the first sliding member, the second sliding member is slidably connected to the second fixing member, and the clamping member is fixedly connected to the second sliding member.

[0019] Optionally, it further includes:

[0020] A cover plate, which is arranged on the top of the base;

[0021] The base, the stopper, the clamping member and the cover plate jointly define a receiving space for the battery.

[0022] Optionally, it further includes:

[0023] Two relatively arranged support plates, which are fixed to the fixture mounting table;

[0024] A base, which is connected between the two support plates and is rotatably connected to the two support plates. The base is provided with the base.

[0025] Optionally, it further includes:

[0026] A heating and temperature control device, which is arranged on the stopper.

[0027] Advantages and beneficial effects of the present application:

[0028] For the battery welding fixture provided by the present application, a plurality of convex structures are arranged on the stopper. When the battery is fixed on the base, the welding edge of the battery abuts against the plurality of convex structures on the stopper. Compared with a flat surface, the positioning surface formed by the plurality of convex structures is easier to control the uniformity of the weld seam, which can ensure the consistency of the weld seam between the upper cover and the bottom shell during the welding process, and greatly reduce the occurrence of welding defects such as explosion welding and missed welding. Description of the Drawings

[0029] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the accompanying drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0030] Figure 1 Schematic diagram of the battery fixing part of the battery welding jig provided by the present invention in an embodiment;

[0031] Figure 2 Schematic diagram of the stopper of the battery welding jig provided by the present invention in an embodiment;

[0032] Figure 3 Schematic diagram of the battery welding jig provided by the present invention in an embodiment;

[0033] Figure 4 Schematic diagram of the clamping part moving part of the battery welding jig provided by the present invention in an embodiment;

[0034] Figure 5 For Figure 4 Schematic diagram of the corresponding structure from another perspective;

[0035] Figure 6 Schematic diagram of the structure of a traditional flanged battery;

[0036] Figure 7 Schematic diagram of the structure of a non-flanged battery provided by the present invention.

[0037] Icons: Battery 100, upper cover 1001, bottom case 1002, bottom platform 101, peripheral edge 1011, stopper 102, convex structure 1021, clamping part 103, cover plate 104, base 105, first slide rail 106, first slider 107, first connecting plate 108, support rod 1081, second connecting plate 109, second slide rail 110, second slider 111, support plate 112, rotating shaft hole 1121, arc-shaped groove 1122. Detailed implementation manners

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and shown in the accompanying drawings here can be arranged and designed in various different configurations.

[0039] Accordingly, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0040] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0041] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is customarily placed during use. It is only for the convenience of describing the present invention 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 thus should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and should not be construed as indicating or implying relative importance.

[0042] In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, the terms "set" and "connect" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In the related art, the upper cover and the bottom case of a battery are generally connected by a welding process, which is one of the processes in the battery production process. Usually, a laser welding machine can be used to complete the welding of the upper cover and the bottom case. Before welding, it is necessary to fix the battery through a jig. There are various types of batteries, such as square batteries and cylindrical batteries. Among them, for square thin-shell batteries, there are the following problems in the welding process of the upper cover and the bottom case: Since the wall thickness of the upper cover and the bottom case is relatively thin (for example, 0.1 mm), the weld seam uniformity is not easy to control, and it is easy to cause welding defects such as explosion welding and leakage welding.

[0044] To solve the problems that the weld seam uniformity is not easy to control during the welding process of the upper cover and the bottom case of the battery, and it is easy to cause welding defects such as explosion welding and leakage welding, the present application provides a battery welding jig.

[0045] Reference can be made toFigures 1-7 In one embodiment, the battery welding jig provided by the present application includes:

[0046] A bottom table 101 for carrying the battery 100. The bottom table 101 can provide a platform on which the battery 100 can be placed to form a bearing for the battery 100, and the battery 100 can be fixed on the bottom table 101.

[0047] A stopper 102 connected to the bottom table 101. The stopper 102 can provide a stopper portion protruding from the tabletop of the bottom table 101. When the battery 100 is fixed on the bottom table 101, the surface where the welding edge of the battery 100 is located can abut against the stopper portion of the stopper 102 and fit with the stopper 102. Here, the welding edge of the battery 100 refers to the position where the battery 100 needs to be welded. For example, it can be the side where the upper cover and the bottom case of the battery 100 are connected. In one embodiment, the battery 100 can be a square battery, which includes an upper cover and a bottom case. The upper cover corresponds to the top surface, and the bottom case includes a bottom surface opposite to the top surface and four side surfaces located between the top surface and the bottom surface. There are four sides where the upper cover and the bottom case of the battery 100 are connected, and the welding edge of the battery 100 can be any one of these four sides. The surface where the welding edge is located can be the side surface where the welding edge is located. When the square battery is fixed on the bottom table 101, the side surface corresponding to the welding edge fits with the stopper 102.

[0048] A plurality of protruding structures 1021 are provided at the abutting portion of the stopper 102 and the welding edge. It can be understood that the welding edge of the battery 100 is located at the connection between the upper cover and the bottom case, and the height of the welding edge is close to or equal to the height of the top surface of the battery 100. The plurality of protruding structures 1021 on the stopper 102 can be provided at the same or similar height as the welding edge. Thus, when the battery 100 is fixed to the bottom table 101, the welding edge of the battery 100 abuts against the plurality of protruding structures 1021 of the stopper 102. Therefore, during welding, the positioning surface formed by the plurality of micro protruding structures 1021 is easier to control in terms of weld seam uniformity compared to a flat surface, which can ensure the consistency of the weld seam between the upper cover and the bottom case during the welding process, and greatly reduce the occurrence of welding defects such as explosion welding and missed welding.

[0049] In one embodiment, the stopper 102 and the bottom table 101 are an integral structure. In one embodiment, the stopper 102 and the bottom table 101 are two separable structural members. Since the stopper 102 abuts against the welding edge of the battery 100 and is more likely to be damaged and contaminated during the welding process, preferably, the stopper 102 and the bottom table 101 are designed as two separable structural members, which can facilitate the separate replacement of the stopper 102.

[0050] There can be various implementation manners for the position layout of multiple convex structures 1021. In one implementation manner, the multiple convex structures 1021 can be arranged at intervals along a first direction, where the first direction is parallel to the welding edge of the battery 100. Specifically, reference can be made to Figure 2 , in which the first direction is marked. The multiple convex structures 1021 can be basically arranged on a straight line extending along the first direction, and the intervals between the respective convex structures 1021 can be the same. Of course, in other implementation manners, the multiple convex structures 1021 can also be arranged along other directions, and the other direction may not be parallel to the welding edge of the battery 100, for example, with a small or certain angle. In other implementation manners, the intervals between adjacent convex structures 1021 can be the same or different.

[0051] In one embodiment, the convex structure 1021 can specifically be a rib, and the rib can extend along a second direction, and the second direction can be perpendicular to the first direction in which the multiple convex structures 1021 are arranged. Reference can be made again to Figure 2 , in which the second direction is marked. The rib extends along the second direction, that is, the length direction of the rib is the second direction, and the multiple ribs are arranged at intervals along the first direction, that is, the multiple ribs can form a parallel relationship. In this embodiment, by designing the convex structure 1021 as a rib, the weld seam uniformity can be further improved.

[0052] As described above, the battery 100 can be fixed on the base 101, and there can be various ways to fix the battery 100 on the base 101. In one embodiment, the battery welding jig can further include a clamping member 103, and the battery 100 can be clamped and fixed on the base 101 through the cooperation of the clamping member 103 and the stopper 102. Specifically, when the battery 100 is fixed to the base 101, the first surface of the battery 100 abuts against the stopper 102, and the second surface of the battery 100 abuts against the clamping member 103, and is clamped and fixed under the limitation of the stopper 102 and the clamping force of the clamping member 103. Here, the first surface and the second surface are two opposite surfaces of the battery 100.

[0053] For a square battery, the battery 100 includes six faces, specifically a top face, a bottom face, opposite first and second faces, and opposite third and fourth faces. In one embodiment, the bottom base 101 may be provided with two opposite side edges 1011. When fixing the battery 100, the third face and / or the fourth face of the battery 100 may be attached to the side edges 1011, and the side edges 1011 can help with the positioning of the battery 100. There are various ways to fix the battery 100. In one embodiment, the clip 103 can be directly connected to the side edges 1011 on the bottom base 101 through fasteners such as screws, thereby forming a clamping and fixing of the battery 100. In one embodiment, the clip 103 can move in the resisting direction of the stopper 102 through a first moving mechanism. It can be understood that when the battery 100 is fixed on the bottom base, the first face of the battery 100 abuts against the stopper 102. Here, the face of the stopper 102 that abuts against the battery 100 is the abutting face, and the resisting direction is the direction perpendicular to the abutting face. The clip can move in the resisting direction to approach or move away from the stopper 102. When moving in the direction approaching the stopper 102, it forms a clamp on the battery 100, and when moving in the direction away from the stopper 102, the clamping of the battery 100 is released.

[0054] There are various ways to implement the first moving mechanism. In one embodiment, the first moving mechanism may include a first fixing member and a first sliding member. The first fixing member can be fixedly connected to the bottom base 101, the first sliding member is slidably connected to the first fixing member, and the clip 103 is fixedly connected to the first sliding member, thereby realizing the sliding of the clip 103 in the resisting direction of the stopper 102. Reference can be made to Figure 4 and Figure 5 , in this example, the first fixing member may be the first slide rail 106. The first slide rail 106 extends along the resisting direction of the stopper 102. A base 105 is fixedly connected below the bottom base 101, and the first slide rail 106 can be fixedly connected to the base 105. The first sliding member may include a first slider 107 and a first connecting plate 108. The first slider 107 is installed on the first slide rail 106, the first connecting plate 108 is fixedly connected to the first slider 107, and the end of the first connecting plate 108 is fixedly connected to the clip 103, so that the clip 103 can slide in the resisting direction of the stopper 102 through the first slider 107. In other embodiments, the first moving mechanism can also be realized through a screw-slider mechanism, a guide rail-pulley mechanism, etc., and the present application does not limit this.

[0055] The base 105 can provide two platforms, namely an upper platform and a lower platform, which are connected by a structural member. The top surface of the upper platform is connected to the bottom base 101, and the bottom surface is connected to the first slide rail 106. The lower platform is used to connect to the support plate 112, which will be specifically described later.

[0056] In one embodiment, the first moving mechanism may further be provided with an elastic member. The first sliding member may drive the clamping member 103 to move toward the stopper 102 when the elastic member returns to its original length, thereby realizing the release of the clamping. Here, the elastic member may be various elastic elements such as a spring, an elastic cord, rubber, etc. There are various ways to realize the release of the clamping. In one embodiment, reference may be made to Figure 5 , an opening may be provided on the first connecting plate 108, a support rod 1081 may be provided in the opening, and a spring may be sleeved outside the support rod 1081. One end of the spring abuts against the base 105, and the other end abuts against the first connecting plate 108. When the first connecting plate 108 is pushed in the direction of the clamping member 103, the spring is compressed, and the clamping member 103 moves away from the stopper 102. At this time, it is convenient to place the battery 100. When the first connecting plate 108 is no longer pushed (i.e., released), the spring returns to its original length, and the first connecting plate 108 may move in the opposite direction of the clamping member 103 under the action of the spring, and the clamping member 103 approaches the stopper 102 to form a clamping on the battery 100. In other embodiments, an opening may not be provided on the first connecting plate 108. For example, a convex column may be provided on the first connecting plate 108, and an elastic member may be provided between the convex column and the base 105, and the elastic force of the elastic member acts on the first connecting plate 108 through the convex column, and the release of the clamping can also be realized.

[0057] Through the first moving mechanism, the clamping member 103 can move in the direction of the resistance of the stopper 102, so that the clamping member 103 can be conveniently pulled to different positions according to the sizes of different batteries 100 to clamp different-sized batteries 100, improving the applicability of the battery welding jig to different-sized batteries 100.

[0058] In one embodiment, the clamping member 103 may move in a direction perpendicular to the base 101 through the second moving mechanism, realizing the adjustable height of the clamping member 103. When the clamping member 103 is raised, the clamping member 103 rises to the height where the battery 100 is located, so that the battery 100 can be clamped and fixed. When the clamping member 103 is lowered, the clamping member 103 and the battery 100 are not at the same height, and no obstacle will be formed to the placement of the battery 100, making it more convenient to place the battery 100.

[0059] There are various ways to implement the second moving mechanism. In one embodiment, the second moving mechanism may include a second fixing member and a second sliding member. The second fixing member may be fixedly connected to the first sliding member of the first moving mechanism. The second sliding member is slidably connected to the second fixing member, and the clamping member 103 is fixedly connected to the second sliding member. In this embodiment, the second moving mechanism is provided on the first moving mechanism, so that the clamping member 103 can move in a two-dimensional plane, that is, it can move simultaneously in the direction of the resistance of the stopper 102 and in the direction perpendicular to the base 101. Reference may be made to Figure 4 and Figure 5, in this example, the second fixing member may be the second slide rail 110. The second slide rail 110 is provided on the second connecting plate 109. The second connecting plate 109 is fixedly connected to the first connecting plate 108. The plate surface of the second connecting plate 109 and the plate surface of the first connecting plate 108 may be perpendicular to each other. The second sliding member may be the second slider 111. The second slider 111 is installed on the second slide rail 110. The second slide rail 110 is fixedly connected to the clamping member 103. Thus, the clamping member 103 can slide in a direction perpendicular to the base 101 through the second slider 111 to achieve height adjustment, and can also slide in the direction of the resistance of the blocking member 102 through the first slider 107 to achieve width (the width refers to the distance between the clamping member 103 and the blocking member 102) adjustment. In other embodiments, the second moving mechanism may also be a lead screw slider mechanism or a guide rail pulley mechanism, etc. The present application does not limit this.

[0060] In one embodiment, the battery welding jig further includes a cover plate 104. The cover plate 104 may be disposed on the top of the base 101. The cover plate 104 can cover the non-welding area of the battery 100, and does not cover the welding area (the position where the welding edge is located), so as not to hinder the welding, and plays a protective role for the non-welding area of the battery 100. On the other hand, the cover plate 104 may be set to have a clamping effect, so that the cover plate 104 cooperates with the base 101 to clamp and fix the battery 100 from the top surface to the bottom surface of the battery 100. In one embodiment, support columns may be provided on the cover plate 104. Springs are sleeved on the support columns. One end of the spring abuts against the cover plate 104, and the other end abuts against the end of the support column. Thus, the spring can apply a force to the cover plate 104 to move in the direction of the battery 100, so as to achieve the clamping of the cover plate 104 to the battery 100.

[0061] As described above, the square battery may include a top surface, a bottom surface, opposite first and second surfaces, and opposite third and fourth surfaces. The bottom base 101 may be provided with two opposite peripheral edges 1011. When fixing the battery 100, the third surface and / or the fourth surface of the battery 100 may be attached to the peripheral edges 1011. Further, in an embodiment, the cover plate 104 may be connected to the peripheral edges 1011 of the bottom base 101. In this way, the bottom base 101, the stopper 102, the clamping member 103, and the cover plate 104 can jointly define a receiving space for the battery 100. That is, when the battery 100 is fixed to the bottom base 101, the first surface of the battery 100 is attached to the stopper 102, the second surface of the battery 100 is attached to the clamping member 103, the third surface and / or the fourth surface of the battery 100 is attached to the peripheral edges 1011 of the bottom base 101, the bottom surface of the battery 100 is attached to the bottom base 101, and the top surface of the battery 100 is attached to the cover plate 104. And the clamping member 103 and the stopper 102 cooperate to clamp the battery 100 in the resisting direction of the stopper 102, and the cover plate 104 and the bottom base 101 cooperate to clamp the battery 100 in the direction perpendicular to the bottom base 101, so that the battery 100 can be fixed more firmly and the welding quality can also be improved.

[0062] In order to facilitate cooperation with a laser welding machine, in an embodiment, the battery welding jig further includes an angle adjustment mechanism, and the bottom base 101 can achieve angle adjustment through this angle adjustment mechanism. Specifically, the battery welding jig further includes two support plates 112. The two support plates 112 are disposed opposite to each other. The two support plates 112 can be installed on the jig mounting table. A base 105 can be rotatably connected between the two support plates 112, and the bottom base 101 is disposed on the base 105. Since the base 105 can rotate, the bottom base 101 disposed on the base 105 can also rotate, realizing the angle adjustment of the bottom base 101. There are various ways of rotational connection, which can be referred to Figure 3 , in this example, a rotating shaft hole 1121 and an arc-shaped groove 1122 are formed on the support plate 112. Corresponding convex shafts and positioning columns are provided at both ends of the base 105. The base 105 is rotatably connected by inserting the convex shaft into the rotating shaft hole 1121. By inserting the positioning column into the arc-shaped groove 1122, the angle of the base 105 can be adjusted, and the base 105 can be conveniently locked at any angle to realize the fixation of the angle. For example, the positioning column can be locked by a locking element such as a nut outside the support plate 112, so as to fix the angle of the base 105.

[0063] Considering the thermal expansion and contraction of the outer shell of the battery 100 during welding, there may be a problem of deformation of the outer shell of the battery 100 after welding. In one embodiment, a heating temperature control device may be provided on the baffle 102 to control the temperature during the welding process through the heating temperature control device, ensuring that the temperature of the battery 100 is within a suitable range during the welding process and the outer shell of the battery 100 will not deform. In one embodiment, the heating temperature control device may include a heating wire and a temperature sensing probe.

[0064] In one embodiment, the battery welding jig provided in the present application may be a welding jig for a flange-free square battery. Specifically, for traditional flanged batteries, reference can be made to Figure 6 , after the upper cover 1001 is welded to the flanged bottom shell 1002, it is necessary to cut off the excess welding edge, adding a trimming process, which is complex in operation and poor in product consistency. For the flange-free square battery of the present application, reference can be made to Figure 7 , the edge of the upper cover 1001 can be bent to form an L-shaped edge, and the L-shaped edge is connected to the side surface of the bottom shell 1002, without an extra flange, and there is no need to add a trimming process, which is simple in operation and good in product consistency.

[0065] The working process of the battery welding jig in one embodiment is as follows: Install the battery welding jig on the jig mounting table of the laser welding machine. By adjusting the locking element at the arc-shaped groove 1122 of the support plate 112, the angle of the base 105 is adjusted, that is, the angle of the bottom table 101 is adjusted. After the adjustment is completed, lock the adjusted angle. Open the cover plate 104, place the assembled flange-free square battery of the upper cover and the bottom shell on the bottom table 101, ensure that the welding edge of the battery 100 abuts against the convex structure 1021 on the baffle 102, and make the left side and / or the right side of the battery 100 fit with the surrounding edge 1011 of the bottom table 101 to complete the preliminary positioning of the battery 100. Push the first connecting plate 108 to move the clamping member 103 away from the baffle 102, then push the second slider 111 to move the clamping member 103 up to the height where the battery 100 is located, and then release the thrust of the first connecting plate 108. The clamping member 103 clamps the second surface of the battery 100 under the action of the elastic member, and then lock the cover plate 104 back (if the cover plate 104 is provided with a release clamping mechanism, directly release the cover plate 104) to complete the fixation before welding of the battery 100. After welding one welding edge of the battery 100, the clamping plate can be loosened, the battery 100 can be taken out, and the side can be changed to continue welding until the four sides of the battery 100 are welded.

[0066] For the technical features provided in the above embodiments, as long as there is no conflict or contradiction, those skilled in the art can combine each technical feature according to the actual situation to form various different embodiments. Due to space limitations in this application document, various different embodiments are not elaborated, but it can be understood that various different embodiments also fall within the scope disclosed in the embodiments of the present application.

[0067] The embodiments described above merely represent several implementation manners of the present application. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all fall within the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. A battery welding jig, characterized in that: include: A base for carrying batteries; as well as A stopper connected to the base, wherein the stopper is provided with a plurality of protrusion structures; When the battery is fixed to the base, the welding edge of the battery abuts against the plurality of protruding structures.

2. The battery welding jig according to claim 1, characterized in that: The plurality of protrusion structures are arranged at intervals along a first direction, and the first direction is parallel to the welding edge.

3. The battery welding jig according to claim 2, characterized in that: The protruding structure is a convex strip, and the convex strip extends along a second direction, and the second direction is perpendicular to the first direction.

4. The battery welding jig according to claim 1, characterized in that: Also includes: The clamping member is configured such that when the battery is fixed to the base, the blocking member abuts against a first surface of the battery, and the clamping member abuts against a second surface of the battery to clamp and fix the battery, wherein the second surface is opposite to the first surface.

5. The battery welding jig according to claim 4, characterized in that: Also includes: A first moving mechanism, through which the clamp can move in the blocking direction of the blocking member.

6. The battery welding jig according to claim 5, characterized in that: The first moving mechanism further comprises an elastic member, and the first sliding member of the first moving mechanism can drive the clamping member to move towards the direction approaching the blocking member when the elastic member returns to its original length.

7. The battery welding jig according to claim 5, characterized in that: Also includes: A second moving mechanism, through which the clamp can move in a direction perpendicular to the base.

8. The battery welding jig according to claim 4, characterized in that: Also includes: A cover plate, the cover plate is arranged on the top of the base; The base, the blocking member, the clamping member and the cover plate together define a storage space for the battery.

9. The battery welding jig according to any one of claims 1 to 8, characterized in that: Also includes: Two supporting plates arranged opposite to each other, wherein the supporting plates are fixed to the fixture mounting table; The base is connected between the two support plates and is rotatably connected to the two support plates. The bottom platform is arranged on the base.

10. The battery welding jig according to any one of claims 1 to 8, characterized in that: Also includes: A heating and temperature control device is arranged on the blocking member.

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