Bearing structure and welding device thereof

Abstract

The utility model provides a bearing structure and a welding device thereof. The bearing structure comprises a base, a bearing piece and an elastic piece. The base is provided with an accommodating groove, and the accommodating groove is used for accommodating a battery; the bearing piece is movably arranged in the accommodating groove and is used for bearing the battery; the elastic piece is arranged in the containing groove and located between the bearing piece and the bottom wall of the containing groove, one end of the elastic piece abuts against the bearing piece, and the other end of the elastic piece abuts against the bottom wall of the containing groove. According to the bearing structure and the welding device, the technical problems that in the related technology, due to the fact that the levelness of the battery cover plate becomes poor, the welding consistency deviates, and the same battery cover plate is prone to being inconsistent in welding penetration and welding width or welding slag occurs can be solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to lithium battery production technical field, concretely relates to a support structure and welding device thereof. BACKGROUND

[0002] In the related art, the battery generally includes a cover plate, a roll core and an aluminum shell. When assembling the battery, the cover plate and the roll core are first assembled together, and then the cover plate and the roll core are placed into the aluminum shell as a whole. The cover plate is arranged on the aluminum shell. Finally, the battery is placed on a bottom support structure, and a jacking mechanism jacks up the bottom support structure and the battery thereon to a pressing plate. The cover plate at the top of the battery contacts the pressing plate, and the pressing plate applies pressure to the battery to tightly press the cover plate at the top of the battery on the aluminum shell. Then, the cover plate and the aluminum shell are laser welded.

[0003] However, the bottom support structure is repeatedly loaded with the battery for a long time, and the bottom support structure is irreversibly damaged during use, such as wear and tear. This causes the support surface of the bottom support structure to be uneven. When the battery is placed on the uneven support surface, the levelness of the cover plate at the top of the battery deteriorates. When the pressing plate applies pressure to the cover plate, local pressure may be too large or too small. The cover plate and the aluminum shell cannot be uniformly and tightly contacted, causing the welding consistency to deviate during welding. Inconsistent welding penetration, welding width and welding slag may occur on the same cover plate, which affects the subsequent use of the battery. SUMMARY

[0004] The embodiments of the utility model provide a support structure and a welding device thereof, which can improve the technical problems that the welding consistency deviates due to the deterioration of the levelness of the cover plate at the top of the battery during welding, and inconsistent welding penetration, welding width and welding slag easily occur on the same cover plate.

[0005] In a first aspect, the embodiments of the utility model provide a support structure, which comprises:

[0006] A base is provided with a receiving groove, and the receiving groove is used to accommodate a battery.

[0007] A support member is movably arranged in the receiving groove, and the support member is used to support the battery.

[0008] An elastic member is arranged in the receiving groove, and the elastic member is located between the support member and the bottom wall of the receiving groove. One end of the elastic member abuts against the support member, and the other end abuts against the bottom wall of the receiving groove.

[0009] In an embodiment, the support member has a support surface in contact with the battery, and the elastic coefficient of the elastic member is k, k= ( G+P )L, wherein G represents the sum of the gravity of the battery and the support, P represents the pressure transmitted to the elastic member through the battery and the support, and L represents the flatness of the support surface.

[0010] In an embodiment, the flatness L of the support surface is greater than 0 and less than or equal to 2 mm.

[0011] In an embodiment, the number of the elastic members is at least two, and the at least two elastic members are arranged on the base in a spaced manner.

[0012] In an embodiment, the base is provided with a first fixing portion corresponding to the elastic member, and one end of the elastic member is detachably fixed on the first fixing portion.

[0013] The side of the support facing the elastic member is provided with a second fixing portion, and the other end of the elastic member is detachably fixed on the second fixing portion.

[0014] In an embodiment, the first fixing portion comprises a first groove, the shape of the first groove is matched with the elastic member, and one end of the elastic member is fixed in the first groove.

[0015] Alternatively, the first fixing portion comprises a first limiting column, and one end of the elastic member is sleeved on the first limiting column.

[0016] In an embodiment, the second fixing portion comprises a second groove, the shape of the second groove is matched with the elastic member, and one end of the elastic member is fixed in the second groove.

[0017] Alternatively, the second fixing portion comprises a second limiting column, and one end of the elastic member is sleeved on the second limiting column.

[0018] In an embodiment, the side wall of the accommodating groove is provided with at least one first guide portion extending in the direction of gravity, the support is provided with a second guide portion matched with the first guide portion, one of the first guide portion and the second guide portion is a groove, and the other is a protrusion, and the protrusion is slidingly arranged in the groove.

[0019] In an embodiment, the side wall of the accommodating groove and / or the support is provided with a notch, and the notch enables a user to grasp the support through the notch.

[0020] In a second aspect, an embodiment of the utility model provides a welding device, which comprises:

[0021] The support structure as described above; and

[0022] A pressing plate for pressing the battery in the accommodating groove.

[0023] In an embodiment, the welding device further comprises:

[0024] a driving member in driving connection with the supporting structure for driving the supporting structure to move towards or away from the pressing plate; and

[0025] a clamping assembly comprising a first clamping member and a second clamping member, when the supporting structure moves to a preset position, the battery carried by the supporting structure is located between the first clamping member and the second clamping member, and the first clamping member and the second clamping member can clamp the battery.

[0026] The embodiment of the utility model has the advantages of:

[0027] The supporting structure in the embodiment of the utility model comprises a base, an elastic member and a supporting member, the base is provided with an accommodating groove for accommodating the battery; the supporting member is movably arranged in the accommodating groove, and the supporting member is used for supporting one end of the battery in the accommodating groove; the elastic member is arranged in the accommodating groove, the elastic member is located between the supporting member and the bottom wall of the accommodating groove, one end of the elastic member abuts against the supporting member, and the other end abuts against the bottom wall of the accommodating groove. When the supporting member is affected by the uneven surface and the levelness of the battery cover plate on the supporting member is affected, the elastic member can be self-adaptively adjusted to realize accurate leveling of the supporting member and the battery cover plate on the supporting member, and the levelness of the battery cover plate is ensured, so that the technical problems that the welding consistency is deviated, the welding penetration and the welding width on the same battery cover plate are inconsistent, or welding slag is prone to occurring on the battery cover plate during the welding process due to the poor levelness of the battery cover plate are solved. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical scheme in the embodiment of the utility model, the drawings needed in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the drawings.

[0029] Figure 1 is a cross-sectional view of the driving member and the supporting structure provided by the embodiment of the utility model;

[0030] Figure 2 is a cross-sectional view of the driving member and the supporting structure provided by another embodiment of the utility model;

[0031] Figure 3 is an exploded view of the supporting structure provided by the embodiment of the utility model;

[0032] Figure 4 is a front view of the welding device provided by the embodiment of the utility model;

[0033] Figure 5 is a side view of the welding device provided by the embodiment of the utility model.

[0034] Signs of the drawings:

[0035] 100, welding device;1, support structure;11, base;111, accommodating groove;1111, bottom wall;1112, side wall;112, first fixed part;1121, first groove;1122, first limiting column;113, first guide part;12, support piece;121, support surface;122, second fixed part;1221, second groove;1222, second limiting column;123, second guide part;124, notch;13, elastic piece;2, pressing plate;21, first pressing plate;22, second pressing plate;23, first motor;3, driving piece;4, clamping assembly;41, first clamping piece;42, second clamping piece;43, second motor;5, battery. Specific implementation

[0036] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model. In addition, it should be understood that the specific implementation described herein is only used to illustrate and explain the utility model, and is not used to limit the utility model. In the utility model, the orientation words such as "upper" and "lower" are generally used to refer to the upper and lower of the device in the actual use or working state, and the specific direction is the direction of the drawing in the drawings. And "inner" and "outer" are used in relation to the outline of the device.

[0037] In the first aspect, please refer to Figures 1 to 3The utility model discloses an embodiment provides a kind of bearing structure 1, including pedestal 11, elastic member 13 and bearing piece 12.Pedestal 11 is equipped with the accommodation slot 111 for accommodating battery 5, and accommodation slot 111 includes bottom wall 1111 and side wall 1112 on bottom wall 1111, in the embodiment, the specific shape of accommodation slot 111 is not limited, the shape of accommodation slot 111 can be square, circular or other shape, optionally, the shape and size of accommodation slot 111 are adapted to battery 5, so that the side wall 1112 of accommodation slot 111 can be positioned battery 5, prevent battery 5 from shaking in the process of movement.Bearing piece 12 movably arranged in accommodation slot 111, bearing piece 12 is used to support the one end of battery 5 in accommodation slot 111, and the specific shape of bearing piece 12 is not limited, and the shape of bearing piece 12 can be columnar, plate or other shape, optionally, bearing piece 12 is plate structure.Elastic member 13 is arranged in accommodation slot 111, and elastic member 13 is between bearing piece 12 and bottom wall 1111 of accommodation slot 111, one end of elastic member 13 is in abutment with bearing piece 12, and the other end is in abutment with bottom wall 1111 of accommodation slot 111.

[0038] In the embodiment, the type of elastic member 13 is not limited, and the elastic member 13 can be a coil spring, a rubber spring, an air spring or other elastic structure for leveling.

[0039] In the embodiment, when the bearing piece 12 is affected by the uneven surface and the levelness of the battery 5 on the bearing piece 12, the elastic member 13 can be adjusted to achieve precise leveling of the bearing piece 12 and the battery 5 on the bearing piece 12, thereby ensuring the levelness of the top cover plate of the battery 5 and improving the technical problems of inconsistent welding, uneven welding depth and width, or welding slag on the same cover plate caused by poor levelness of the top cover plate of the battery 5 during welding.

[0040] In an embodiment, referring to Figures 1 to 3 The bearing piece 12 has a bearing surface 121 in contact with the battery 5, and the elastic coefficient k of the elastic member 13 is (G+P) / L, where G represents the sum of the gravity of the battery 5 and the bearing piece 12, P represents the pressure applied to the battery 5 and transmitted to the elastic member 13 through the battery 5 and the bearing piece 12, and L represents the flatness of the bearing surface 121. In the embodiment, the flatness of the bearing surface 121 refers to the flatness of the bearing surface 121 in the horizontal direction, that is, the height difference between any two points on the bearing surface 121. The smaller the height difference, the higher the flatness of the bearing surface 121.

[0041] In the embodiment, the external force on the elastic member 13 mainly includes the sum G of the gravity of the battery 5 and the support member 12 and the pressure P applied on the battery 5 and transmitted to the elastic member 13 through the battery 5 and the support member 12. According to Hooke's law, when the elastic coefficient k of the elastic member 13 is (G+P) / L, the deformation amount of the elastic member 13 under pressure is the flatness of the support surface 121. When the support member 12 is affected by the unevenness of the support surface 121, the levelness of the battery 5 on the support member 12 is affected. The user can replace the elastic member 13 with a specific elastic coefficient according to the flatness L of the support surface 121. By changing the elastic coefficient of the elastic member 13, the deformation amount of the elastic member 13 under stress is adjusted to achieve accurate leveling of the support surface 121, thereby ensuring the levelness of the battery 5 on the support member 12, and improving the technical problems that the cover plate on the top of the battery 5 during welding has poor levelness, resulting in deviation of welding consistency, and easy occurrence of inconsistent welding depth and width on the same cover plate.

[0042] In an embodiment, the flatness L of the support surface 121 is less than or equal to 2 mm. For example, the flatness L of the support surface 121 can be any one of 0.1 mm, 0.3 mm, 0.5 mm, 0.8 mm, 1.0 mm, 1.3 mm, 1.5 mm, 1.8 mm, 2.0 mm, or a range between any two of them. The present application does not limit this.

[0043] In the embodiment, when the flatness L of the support surface 121 is equal to 0, the height of the support surface 121 is basically the same, and the levelness of the support surface 121 is best, so there is no need to level the support surface 121. When the flatness L of the support surface 121 is greater than 2 mm, the support surface 121 is seriously worn, and the elastic member 13 cannot effectively level the support surface 121, and the leveling effect is poor. Therefore, when the flatness L of the support surface 121 is greater than 0 and less than or equal to 2 mm, the support surface 121 is leveled by replacing the elastic member 13 with a specific elastic coefficient, which can ensure the leveling effect of the elastic member 13.

[0044] In an embodiment, the number of elastic members 13 is at least two, and the at least two elastic members 13 are arranged on the base 11 in a spaced manner, and specifically, the elastic members 13 are fixed on the bottom wall 1111 of the accommodating groove 111. In this embodiment, the elastic members 13 can provide certain support to the supporting member 12. Two or more elastic members 13 are arranged on the base 11 in a spaced manner, and the pressure can be evenly shared between the elastic members 13, so as to avoid damage of the elastic members 13 due to excessive stress on a single point. In addition, the elastic members 13 arranged in a spaced manner can provide more balanced support, reduce the shaking of the supporting member 12 when stressed, and thus improve the stability of the overall supporting structure 1.

[0045] In an embodiment, please refer to Figure 1 and Figure 2 , the base 11 is provided with a first fixing portion 112 corresponding to the elastic member 13, and one end of the elastic member 13 is detachably fixed on the first fixing portion 112. The side of the supporting member 12 facing the elastic member 13 is provided with a second fixing portion 122, and the other end of the elastic member 13 is detachably fixed on the second fixing portion 122. In this embodiment, the elastic member 13 can be detachably fixed on the first fixing portion 112 and the second fixing portion 122 by means of buckle connection, screw connection, plug-in connection, sleeve connection, etc. The elastic member 13 is connected to the base 11 and the supporting member 12 in a detachable manner, which is convenient for users to replace the elastic member 13.

[0046] In an embodiment, please refer to Figure 1 and Figure 2 , the first fixing portion 112 comprises a first recess 1121, the shape of the first recess 1121 is matched with the elastic member 13, and one end of the elastic member 13 is fixed in the first recess 1121. The first recess 1121 can provide mounting space for the elastic member 13. In this embodiment, on the one hand, the first recess 1121 can provide a limiting action for the elastic member 13, so that the connection between the elastic member 13 and the base 11 is more stable, and the elastic member 13 is not easy to shake when stressed. On the other hand, one end of the elastic member 13 is inserted into the first recess 1121 by plug-in connection, and the connection between the elastic member 13 and the first recess 1121 is simple and convenient, which is convenient for replacing the elastic member 13 later.

[0047] In an embodiment, please refer to Figure 1 and Figure 2The first fixing portion 112 comprises a first limiting column 1122, the elastic member 13 has a hollow mounting cavity, the outer diameter of the first limiting column 1122 is matched with the inner diameter of the mounting cavity of the elastic member 13, one end of the elastic member 13 is sleeved on the first limiting column 1122, and at least part of the first limiting column 1122 is located in the mounting cavity of the elastic member 13. In the embodiment, on the one hand, the first limiting column 1122 can provide a limiting action for the elastic member 13, so that the connection between the elastic member 13 and the base 11 is more stable, and the elastic member 13 is not easy to shake when being stressed; on the other hand, one end of the elastic member 13 is sleeved on the first limiting column 1122 in a sleeved connection mode, the connection between the elastic member 13 and the first limiting column 1122 is simple and convenient, and the elastic member 13 is convenient to replace in the later period.

[0048] In an embodiment, the second fixing portion 122 comprises a second groove 1221, the shape of the second groove 1221 is matched with the elastic member 13, one end of the elastic member 13 is fixed in the second groove 1221, and the second groove 1221 can provide a mounting space for the elastic member 13. In the embodiment, on the one hand, the second groove 1221 can provide a limiting action for the elastic member 13, so that the connection between the elastic member 13 and the base 11 is more stable, and the elastic member 13 is not easy to shake when being stressed; on the other hand, one end of the elastic member 13 is inserted into the second groove 1221 in a plug-in connection mode, the connection between the elastic member 13 and the second groove 1221 is simple and convenient, and the elastic member 13 is convenient to replace in the later period.

[0049] In an embodiment, please refer to Figure 1 and Figure 2 The second fixing portion 122 comprises a second limiting column 1222, the elastic member 13 has a hollow mounting cavity, the outer diameter of the second limiting column 1222 is matched with the inner diameter of the mounting cavity of the elastic member 13, one end of the elastic member 13 is sleeved on the second limiting column 1222, so that at least part of the second limiting column 1222 is located in the mounting cavity of the elastic member 13. In the embodiment, on the one hand, the second limiting column 1222 can provide a limiting action for the elastic member 13, so that the connection between the elastic member 13 and the base 11 is more stable, and the elastic member 13 is not easy to shake when being stressed; on the other hand, one end of the elastic member 13 is sleeved on the second limiting column 1222 in a sleeved connection mode, the connection between the elastic member 13 and the second limiting column 1222 is simple and convenient, and the elastic member 13 is convenient to replace in the later period.

[0050] In an embodiment, please refer to Figure 3The sidewall 1112 of the accommodating groove 111 is provided with at least one first guide part 113 extending along the direction of gravity, the supporting piece 12 is provided with a second guide part 123 matched with the first guide part 113, one of the first guide part 113 and the second guide part 123 is a groove, and the other is a protrusion, and the protrusion is slidingly arranged in the groove. On the one hand, the first guide part 113 and the second guide part 123 can provide positioning and visual guidance for the user, so that the user can quickly and accurately find the correct connection position of the supporting piece 12 and the elastic piece 13, reduce the assembly error caused by the misalignment of the position, and improve the assembly efficiency; on the other hand, the first guide part 113 provides a limiting effect and a guiding effect, so that the movement of the supporting piece 12 in the accommodating groove 111 is more stable.

[0051] In an embodiment, referring to Figure 3 The sidewall 1112 of the accommodating groove 111 and / or the supporting piece 12 is provided with a notch 124, and the notch 124 enables the user to grasp the supporting piece 12 through the notch 124. In the embodiment, the position of the notch 124 is not limited, and the notch 124 can be arranged on the sidewall 1112 of the accommodating groove 111 or on the supporting piece 12. The shape of the notch 124 is also not limited, and the notch 124 can be square, circular, oval or other shapes. Specifically, by arranging the notch 124 on the sidewall 1112 of the accommodating groove 111 and / or the supporting piece 12, the notch 124 provides a grasping space for the user when installing or dismounting the supporting piece 12, so that the user can grasp the supporting piece 12 through the notch 124, and the dismounting convenience of the supporting piece 12 can be improved.

[0052] In a second aspect, referring to Figure 4 and Figure 5 The embodiment of the utility model provides a kind of welding device 100, including pressing plate 2 and the supporting structure 1 as described above, wherein, pressing plate 2 is used to compress battery 5 in accommodating groove 111.In the embodiment, the elastic piece 13 in supporting structure 1 can level battery 5 on supporting piece 12, ensure the levelness of battery 5, so that pressing plate 2 can uniformly apply pressure to the cover plate on the top of battery 5 in the process of compressing battery 5, the cover plate can be tightly pressed on the aluminum shell of battery 5, benefit in subsequent laser welding process to keep the consistency of welding between cover plate and aluminum shell.

[0053] In a specific embodiment, the pressing plate 2 is arranged above the supporting structure 1, and the pressing plate 2 includes two first motors 23, a first pressing plate 21 and a second pressing plate 22, and the two first motors 23 are respectively in transmission connection with the first pressing plate 21 and the second pressing plate 22.

[0054] In an embodiment, referring to Figure 4 and Figure 5The welding device 100 further comprises a driving member 3 and a clamping assembly 4. The driving member 3 is in transmission connection with the supporting structure 1, so as to drive the supporting structure 1 to move towards or away from the pressing plate 2. In the embodiment, the type of the driving member 3 is not limited, and the driving member 3 can be a motor, a cylinder, a lead screw or other types of driving structures. Specifically, the driving member is a motor, and an output shaft of the motor is in transmission connection with the base 11.

[0055] In the embodiment, the clamping assembly 4 comprises a first clamping member 41 and a second clamping member 42. When the supporting structure 1 moves to the preset position, the battery 5 carried by the supporting structure 1 is located between the first clamping member 41 and the second clamping member 42, and the first clamping member 41 and the second clamping member 42 can clamp the battery 5, so as to prevent the battery 5 from moving in the process of laser welding and affecting the welding effect. Specifically, the clamping assembly 4 further comprises two second motors 43, and the two second motors 43 are respectively in transmission connection with the first clamping member 41 and the second clamping member 42. When the battery 5 is located between the first clamping member 41 and the second clamping member 42, the second motors 43 can respectively drive the first clamping member 41 and the second clamping member 42 to move towards the battery 5 to clamp the battery 5.

[0056] In one specific embodiment, the welding process of the welding device comprises the following steps:

[0057] S1, the driving member 3 drives the base 11 and the battery 5 on the base 11 to move upwards to the pressing plate 2, the elastic member 13 levels the battery 5 on the supporting member 12, and the first pressing plate 21 and the second pressing plate 22 respectively press the first side and the second side of the cover plate to make the cover plate press the aluminum shell. At this time, the battery 5 is just located between the first clamping member 41 and the second clamping member 42.

[0058] S2, the first clamping member 41 and the second clamping member 42 are respectively driven by the second motors 43 to move towards the battery 5 and clamp the battery 5.

[0059] S3, the first motor 23 drives the first pressing plate 21 to move away from the first side of the cover plate.

[0060] S4, the laser beam of the welding device 100 performs laser welding on the weld seam at the first side of the cover plate.

[0061] S5, the first motor 23 drives the second pressing plate 22 to move away from the second side of the cover plate of the battery 5.

[0062] S6, the laser beam of the welding device 100 performs laser welding on the weld seam at the second side of the cover plate.

[0063] S7, after the laser welding is completed, the first clamping member 41 and the second clamping member 42 are respectively driven by the second motors 43 to move away from the battery 5 and release the battery 5.

[0064] S8, the driving member 3 drives the base 11 and the battery 5 on the base 11 to move downwards to leave the pressing plate 2.

[0065] The above has carried out the detailed introduction to the embodiment of the utility model, the principle and implementation mode of the utility model have been described in this paper by applying specific examples, the above embodiment explanation is only for helping understanding the method of the utility model and its core thought; simultaneously, for the technical personnel in the art, according to the thought of the utility model, there will be changes in specific implementation mode and application range, and the above is described, the content of the specification should not be understood as the limitation of the utility model.

Claims

1. A support structure, characterized by, include: The base has a receiving groove for accommodating the battery; A support member is movably disposed within the receiving groove and is used to support the battery. An elastic element is disposed within the receiving groove, and the elastic element is located between the support member and the bottom wall of the receiving groove. One end of the elastic element abuts against the support member, and the other end abuts against the bottom wall of the receiving groove.

2. The support structure of claim 1, wherein, The support member has a support surface in contact with the battery, and the elastic member has an elastic coefficient k, k = G + P / L ( G + P ) L, wherein G represents the sum of the gravity of the battery and the support member, P represents the pressure transmitted to the elastic member through the battery and the support member, and L represents the flatness of the support surface.

3. The support structure of claim 2, wherein, The flatness L of the supporting surface is greater than 0 and less than or equal to 2 mm; And / or, the number of elastic elements is at least two, and at least two elastic elements are spaced apart on the base.

4. The support structure according to any one of claims 1 to 3, wherein The base is provided with a first fixing part corresponding to the elastic element, and one end of the elastic element is detachably fixed to the first fixing part; The support member has a second fixing part on the side facing the elastic member, and the other end of the elastic member is detachably fixed to the second fixing part.

5. The support structure of claim 4, wherein, The first fixing part includes a first groove, the shape of which is adapted to the elastic member, and one end of the elastic member is fixed in the first groove; Alternatively, the first fixing part includes a first limiting post, and one end of the elastic member is sleeved on the first limiting post.

6. The support structure of claim 4, wherein, The second fixing part includes a second groove, the shape of which is adapted to the elastic member, and one end of the elastic member is fixed in the second groove; Alternatively, the second fixing part includes a second limiting post, and one end of the elastic member is sleeved on the second limiting post.

7. The support structure according to any one of claims 1 to 3, wherein The sidewall of the receiving groove is provided with at least one first guide portion extending in the direction of gravity, and the support member is provided with a second guide portion that cooperates with the first guide portion. One of the first guide portion and the second guide portion is a groove, and the other is a protrusion. The protrusion is slidably disposed in the groove.

8. The support structure according to any one of claims 1 to 3, wherein The sidewall of the receiving groove and / or the support member are provided with notches, which allow the user to grip the support member through the notches.

9. A welding device characterized by, include: The supporting structure as described in any one of claims 1 to 8; as well as, A pressure plate, used to press the battery in the receiving slot.

10. The welding device of claim 9, wherein, Also includes: A driving component, which is pulsatorically connected to the supporting structure, for driving the supporting structure to move toward or away from the pressure plate; as well as, The clamping assembly includes a first clamping member and a second clamping member. When the supporting structure moves to a preset position, the battery carried by the supporting structure is located between the first clamping member and the second clamping member, and the first clamping member and the second clamping member can clamp the battery.

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