Welding device

Abstract

The utility model relates to a welding device which is used for welding a battery cell and a shell and comprises a clamping mechanism, a welding mechanism and a conveying mechanism. The shell with a downward opening is clamped on the clamping mechanism, and the battery cell is accommodated in the shell; the welding mechanism is used for welding the battery cell and the bottom wall of the shell; the conveying mechanism is used for conveying the clamping mechanism to the welding area of the welding mechanism in the preset direction, when the clamping mechanism passes through the welding area, the laser emits laser to form a preset welding track on the bottom wall of the shell, and welding of the battery cell and the shell is completed. By arranging the conveying mechanism to convey the shell and the battery cell to the welding area and weld the shell and the battery cell at the same time, the shell and the battery cell do not need to stay on the welding area in the welding process, namely, welding of the shell and the battery cell can be completed in the moving process, and the production efficiency of the battery can be improved.

Description

Technical Field

[0001] This utility model relates to the field of welding technology, and in particular to a welding apparatus. Background Technology

[0002] During the welding process of battery casing and cell, the casing and cell need to be transported to the welding area. After the cell and casing are stopped in the welding area, the laser generator is turned on to weld the casing and cell. The entire welding equipment has a complex structure and low production efficiency. Utility Model Content

[0003] Therefore, it is necessary to provide a welding device that improves upon the aforementioned shortcomings in order to address the problem of low production efficiency in existing welding devices.

[0004] This application provides a welding apparatus for welding a battery cell and a casing, the welding apparatus comprising:

[0005] A clamping mechanism is used to clamp the housing, with the housing opening facing downwards, and the battery cell is housed inside the housing;

[0006] A welding mechanism, including a laser, is disposed above the clamping mechanism and is used to weld the battery cell and the bottom wall of the housing; and

[0007] A conveying mechanism is used to convey the clamping mechanism to the welding area of ​​the welding mechanism along a preset direction. As the clamping mechanism passes through the welding area, the laser emits a laser to form a preset welding trajectory on the bottom wall.

[0008] By setting up a conveying mechanism to transport the casing and battery cell to the welding area, the laser of the welding mechanism emits a laser to form a preset welding trajectory on the bottom wall, thereby realizing the welding of the casing and battery cell. During the welding process, the casing and battery cell do not need to stay on the welding area, that is, the welding of the casing and battery cell can be completed during the movement, which can improve the production efficiency of the battery.

[0009] In some embodiments, the welding apparatus further includes:

[0010] A dust removal mechanism is provided corresponding to the welding area, and the dust removal port of the dust removal mechanism is oriented towards the welding area to remove the fumes generated during welding.

[0011] In some embodiments, the dust removal mechanism includes:

[0012] A chamber, wherein the dust removal port is located on the side of the chamber near the welding area, and the dust removal port extends along the preset direction; and

[0013] A negative pressure component is configured to communicate with the chamber.

[0014] In some embodiments, the welding apparatus includes two dust removal mechanisms respectively disposed on both sides of the welding area, and the dust removal ports of the two dust removal mechanisms are both disposed facing the welding area.

[0015] In some embodiments, the clamping mechanism includes a pressing member, a positioning member, a supporting member, and a driving assembly arranged sequentially in a vertical direction, wherein the housing is clamped in the positioning member with its opening facing downward, the supporting member is used to support the battery cell, and the driving assembly is used to drive the battery cell to press the battery cell into the housing, thereby causing the battery cell to abut against the bottom wall of the housing.

[0016] In some embodiments, the driving component includes:

[0017] A drive rod is provided to extend along the vertical direction;

[0018] The driving unit is connected to the driving rod to drive the driving rod to move along the vertical direction.

[0019] In some embodiments, the clamping mechanism further includes a limiting member disposed between the driving component and the supporting component, the limiting member having a limiting hole extending through the vertical direction, and the driving rod passing through the limiting hole.

[0020] In some embodiments, the clamping mechanism further includes a mounting member extending along the vertical direction, and the driving assembly further includes:

[0021] A drive mounting component is movably disposed on the mounting component along the vertical direction. The drive mounting component has a mounting hole that extends through the vertical direction. The end of the drive rod opposite to the support component is inserted into the mounting hole.

[0022] A pressure sensor is disposed at the end of the drive rod away from the support member, and is used to measure the pressure of the drive rod.

[0023] In some embodiments, the driver component further includes:

[0024] An elastic element is disposed between the drive rod and the pressure sensor along the vertical direction; and

[0025] An adjusting member is disposed on the side of the pressure sensor opposite to the drive rod, and the distance of the adjusting member along the vertical direction is adjustable to adjust the compression amount of the elastic member.

[0026] In some embodiments, a cup holder is fitted onto the side of the housing opposite to the opening, and the positioning member includes a first positioning part and a second positioning part spaced apart along the vertical direction. The cup holder is positioned at the first positioning part, and the housing is positioned at the second positioning part.

[0027] In some embodiments, the distance between the clamping member and the positioning member along the vertical direction is adjustable.

[0028] In some embodiments, the conveying mechanism is a turret, and the welding device includes a plurality of clamping mechanisms disposed on the turret for sequentially conveying the battery cell and the housing to the welding area. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the welding device in an embodiment of the present invention;

[0030] Figure 2 for Figure 1 A magnified view of a portion of position A in the middle;

[0031] Figure 3 for Figure 1 The central position is shown in a magnified view in Figure B;

[0032] Figure 4 This is a schematic diagram of the welding device after removing the conveying mechanism in an embodiment of the present invention;

[0033] Figure 5 for Figure 4 The main view;

[0034] Figure 6 for Figure 5 Sectional view along CC;

[0035] Figure 7 for Figure 6 A magnified view of a portion of position D in the middle;

[0036] Figure 8 This is a structural schematic diagram of the dust removal mechanism at one angle in an embodiment of this utility model;

[0037] Figure 9 This is a schematic diagram of the dust removal mechanism from another angle in an embodiment of this utility model;

[0038] Figure 10 This is a schematic diagram of the clamping mechanism in an embodiment of the present utility model;

[0039] Figure 11 for Figure 10 A magnified view of a portion of position E in the middle;

[0040] Figure 12 for Figure 10The main view;

[0041] Figure 13 for Figure 12 Sectional view along FF;

[0042] Figure 14 for Figure 13 A magnified view of the central position G;

[0043] Figure 15 for Figure 13 A magnified view of the central position H.

[0044] Explanation of reference numerals in the attached figures:

[0045] 1 Welding device; 11 Clamping mechanism, 111 Pressing component, 112 Positioning component, 1121 First positioning part, 1122 Second positioning part, 113 Supporting component, 114 Drive assembly, 1141 Drive rod, 1142 Drive part, 1143 Drive mounting component, 11431 Mounting hole, 1144 Pressure sensor, 1145 Elastic component, 1146 Adjusting component, 1147 Cam follower, 1148 Guide groove, 115 Limiting component, 1151 Limiting hole, 116 Mounting component; 12 Welding mechanism, 121 Welding area; 13 Conveying mechanism; 14 Dust removal mechanism, 141 Dust removal port, 142 Chamber, 143 Negative pressure component;

[0046] 2 battery cells;

[0047] 3. Shell, 31. Bottom wall;

[0048] 4 cups;

[0049] X is the vertical direction;

[0050] S is the preset direction. Detailed Implementation

[0051] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0052] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0053] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0054] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0055] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0056] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0057] To better understand the embodiments of this application, the following is combined with... Figures 1 to 15 The embodiments of this application will be described in detail.

[0058] like Figures 1 to 15 As shown, this application provides a welding apparatus 1 for welding a battery cell 2 and a housing 3. The welding apparatus 1 includes a clamping mechanism 11, a welding mechanism 12, and a conveying mechanism 13. The clamping mechanism 11 clamps the housing 3 with its opening facing downwards, and the battery cell 2 is housed within the housing 3. The welding mechanism 12 includes a laser and is positioned vertically X-axis on one side of the clamping mechanism 11 for welding the bottom wall 31 of the battery cell 2 and the housing 3. The conveying mechanism 13 conveys the clamping mechanism 11 along a preset direction S to the welding area 121 of the welding mechanism 12. As the clamping mechanism 11 passes through the welding area 121, the laser emits a laser beam to form a preset welding trajectory on the bottom wall 31.

[0059] The battery 2 includes a cell 2 and a casing 3, with the cell 2 housed within the casing 3. The cell 2 refers to a component formed by stacking or winding positive and negative electrode plates and a separator. The battery can be a lithium-ion battery, lithium-sulfur battery, sodium-lithium-ion battery, sodium-ion battery, or magnesium-ion battery, etc., and this application embodiment does not limit this. The battery shape can be cylindrical, flat, cuboid, or other shapes, and this application embodiment also does not limit this.

[0060] The housing 3 refers to an open accommodating component that houses the battery cell 2 and the electrolyte, thereby enabling the exchange of ions on the positive and negative electrodes of the battery cell 2 and generating current. The housing 3 can be made of materials such as aluminum or steel; this embodiment does not limit its material. The shape of the housing 3 is also not limited in this embodiment.

[0061] On the one hand, to prevent the battery cell 2 from moving within the casing 3 due to vibration or other impacts during use, thus affecting the battery's lifespan, the battery cell 2 and the bottom wall 31 of the casing 3 need to be welded together to fix the position of the battery cell 2 within the casing 3. On the other hand, to enable current transfer from the battery cell 2 to the outside of the casing 3, the battery cell 2 and the bottom wall 31 of the casing 3 also need to be welded together to achieve current transfer.

[0062] The clamping mechanism 11 refers to the component used to clamp and fix the housing 3. Specifically, the clamping mechanism 11 can be a gripper, a robotic arm, or other component that clamps the housing 3 by generating clamping force. The clamping mechanism 11 can also be a negative pressure mechanism, a magnetic attraction mechanism, or other adsorption component that adsorbs and fixes the housing 3 by generating adsorption force and magnetic attraction force.

[0063] The housing 3 is clamped in the clamping mechanism 11 with its opening facing downwards. Specifically, in the clamping mechanism 11, the bottom wall 31 of the housing 3 is located above the opening along the vertical direction X. The battery cell 2 is inserted into the housing 3 from bottom to top. This arrangement allows the parts of the battery cell 2 and the housing 3 to be welded to face upwards along the vertical direction X, facilitating the placement of the welding mechanism 12. In other words, by placing the housing 3 with its opening facing downwards in the clamping mechanism 11, the welding mechanism 12 can be positioned above the housing 3 along the vertical direction X. This prevents impurities generated during welding from falling and contaminating the welding mechanism 12, thus affecting the subsequent welding quality. Furthermore, positioning the welding part upwards facilitates post-weld quality inspection.

[0064] The welding mechanism 12 includes a laser, which is a component that generates laser light. The laser light is used to melt and weld the battery cell 2 and the bottom wall 31 of the housing 3 together. The welding mechanism 12 is located above the clamping mechanism 11. This arrangement allows the welding area to face upwards, facilitating real-time monitoring of the welding process and protecting the welding mechanism 12.

[0065] In some embodiments, the welding mechanism 12 further includes a galvanometer assembly, which can adjust the emission direction and focal length of the laser generated by the laser to ensure the welding quality of the battery cell 2 and the housing 3.

[0066] The conveying mechanism 13 is used to convey the clamping mechanism 11 along a preset direction S to the welding area 121 of the welding mechanism 12. In some embodiments, the conveying mechanism 13 may be a conveying mechanism such as a belt or chain, or a transmission mechanism such as a turntable. The preset direction S may be along a straight line and / or a curve, and the conveying mechanism 13 moves along the preset direction S.

[0067] The welding area 121 is the effective range of the laser emitted by the laser. When the conveying mechanism 13 conveys the battery cell 2 and the housing 3 to the welding area 121, the laser emitted by the welding mechanism 12 forms a preset welding trajectory on the bottom wall 31 of the housing 3, thereby realizing the welding of the battery cell 2 and the housing 3.

[0068] By setting up a conveying mechanism 13 to transport the housing 3 and the battery cell 2 to the welding area, the welding mechanism 12 performs welding on the housing 3 and the battery cell 2. During the welding process, the housing 3 and the battery cell 2 do not need to stay on the welding area 121. That is, the welding of the housing 3 and the battery cell 2 can be completed during the movement, which can improve the production efficiency of the battery.

[0069] like Figures 1 to 9 As shown, in some embodiments, the welding apparatus 1 further includes a dust removal mechanism 14, which is correspondingly arranged with the welding area 121, and the dust removal port 141 of the dust removal mechanism 14 is arranged facing the welding area 121 to remove the fumes generated during welding.

[0070] By setting the dust removal port 141 of the dust removal mechanism 14 toward the welding area 121, impurities such as smoke and slag generated during welding can be drawn away from the welding area 121 through the dust removal port 141, thus preventing dust from obstructing the welding laser or falling onto the welding part of the shell 3 and affecting the welding quality.

[0071] like Figure 8 and 9 As shown, in some embodiments, the dust removal mechanism 14 further includes a chamber 142 and a negative pressure component 143. The dust removal port 141 is disposed on the side of the chamber 142 near the welding area 121, and the dust removal port 142 extends along a preset direction S. The negative pressure component 143 is connected to the chamber 142.

[0072] By setting up chamber 142, the adsorption force generated by negative pressure component 143 can be distributed over a larger area, increasing the adsorption area of ​​negative pressure component 143 and improving the dust removal effect.

[0073] The dust removal port 142 extends along a preset direction S. Specifically, multiple dust removal ports 141 can be provided on the side of the chamber 142 near the welding area 121, with the multiple dust removal ports 141 spaced apart along the preset direction S, thereby ensuring that both the housing 3 and the battery cell 2 are subjected to the adsorption force from the dust removal mechanism 14 during the welding process, thus removing welding impurities. In other embodiments, a narrow dust removal port 141 extending along a preset direction can also be provided on the side of the chamber 142 near the welding area 121, thereby ensuring that both the housing 3 and the battery cell 2 are subjected to the adsorption force from the dust removal mechanism 14 during the welding process.

[0074] like Figure 8 and 9 As shown, in some embodiments, the welding device 1 includes two dust removal mechanisms 14 respectively disposed on both sides of the welding area 121, and the dust removal ports 141 of the two dust removal mechanisms 14 are both disposed facing the welding area 121.

[0075] By setting two dust removal mechanisms 14, the effective area and adsorption force of the dust removal mechanism 14 can be increased, thereby improving the dust removal effect.

[0076] In some embodiments, the negative pressure component of one of the dust removal mechanisms 14 can be replaced with a gas supply component. While supplying protective gas to the welding area 121, an airflow can be formed between the two dust removal mechanisms 14 to draw welding slag and other welding residues into the negative pressure component, thereby improving the welding quality.

[0077] like Figure 10 , 12 As shown in Figure 13, in some embodiments, the clamping mechanism 11 includes a pressing member 111, a positioning member 112, a supporting member 113, and a driving assembly 114 arranged sequentially along the vertical direction X. The housing 3 is clamped in the positioning member 112 with its opening facing downwards. The supporting member 113 supports the battery cell 2, and the driving assembly 114 drives the battery cell 2 to press it into the housing 3, thereby causing the battery cell 2 to abut against the bottom wall of the housing 3.

[0078] Similarly, the positioning component 112 can be a gripper, a robotic arm, or other components that use the clamping force to hold the housing 3; the positioning component 112 can also be a negative pressure mechanism, a magnetic attraction mechanism, or other adsorption components that use the adsorption force to adsorb and fix the housing 3.

[0079] The support member 113 is located on the lower side of the positioning member 112. When the housing 3 is placed on the positioning member 112, the support member 113 can support the battery cell 2 inside the housing 3, preventing the battery cell 2 from completely coming out of the housing 3 or even falling off.

[0080] To prevent damage to the battery cell 2 from collision with the support member 113 during the loading of the housing 3 and the battery cell 2, a certain gap must be maintained between the battery cell 2 and the support member 113 in the vertical direction X (i.e., the battery cell is a certain height above the support member 113). Therefore, after loading, the battery cell 2 will inevitably fall under the influence of gravity, resulting in a gap between the battery cell 2 and the bottom wall 31. However, if a gap exists between the bottom wall 31 and the battery cell 2 during the welding process, it will cause the weld seam to be recessed, affecting the welding quality between the bottom wall 31 and the battery cell 2, or even causing welding failure. Therefore, to prevent the battery cell 2 from being tightly attached to the bottom wall 31, a drive assembly 114 is needed to abut the battery cell 2 against the bottom wall 31. The drive assembly 114 can be a motor, an electric cylinder, a pneumatic cylinder, a hydraulic cylinder, etc., and this embodiment does not limit the specific type of drive assembly.

[0081] In some embodiments, a clamping member 113 is provided on the side of the positioning member 112 away from the support member 113. By providing the clamping member 113, when the driving assembly 114 drives the battery cell 2 to be inserted upward into the housing 3, the housing 3 can abut against the clamping member 113 to prevent the housing 3 from moving and to ensure effective contact between the battery cell 2 and the bottom wall 31.

[0082] In some embodiments, the clamping member 113 is provided with a welding through hole to ensure that the laser of the welding mechanism 12 can act on the welding part of the housing 3 through the welding through hole, thereby ensuring the welding effect.

[0083] The clamping member 111, positioning member 112, supporting member 113, and driving assembly are arranged sequentially in the vertical direction X. When the battery cell 2 and the housing 3 are loaded, the housing 3 is placed on the positioning member 112 with its opening facing downwards, and the end of the battery cell away from the bottom wall 31 abuts against the supporting member 113. Then, the driving assembly 114 drives the battery cell 2 to be inserted into the housing 3 from bottom to top. The housing 3 is firmly fixed on the positioning member 112 by the clamping member 111, which ensures the effective contact between the battery cell 2 and the bottom wall 31, thereby ensuring the welding quality between the battery cell 2 and the bottom wall 31.

[0084] like Figure 10 , 12 As shown in 13 and 15, in some embodiments, the drive assembly includes a drive rod 1141 and a drive portion 1142. The drive rod 1141 extends along the vertical direction X; the drive portion 1142 is driven to the drive rod 1141 to drive the drive rod 1141 to move along the vertical direction X.

[0085] The drive unit 1142 can be a motor, or an electric cylinder, pneumatic cylinder, hydraulic cylinder, etc. By setting the drive unit 1142 to push the drive rod 1141 to move in the vertical direction X, the battery cell 2 is pushed in the vertical direction X to approach the bottom wall 31 of the housing 3, ensuring effective contact between the battery cell 2 and the bottom wall 31.

[0086] like Figure 10 , 12 As shown in Figure 13, in some embodiments, the clamping mechanism 11 further includes a limiting member 115, which is disposed between the drive assembly 114 and the support member 113. The limiting member 115 is provided with a limiting hole 1151 that extends through in the vertical direction X, and the drive rod 1141 passes through the limiting hole 1151.

[0087] The shape of the limiting hole 115 is consistent with the shape of the drive rod 1141. By setting the limiting hole 115, it can prevent the drive rod 1141 from tilting due to excessive squeezing force when it comes into contact with the battery cell 2. This ensures that the end of the drive rod 1141 away from the drive part 1142 can also move accurately in the vertical X direction, ensuring the concentricity between the battery cell 2 and the housing 3 when it is pushed into the housing 3. On the other hand, by setting the limiting hole 115, it can ensure that the drive rod 1141 accurately comes into contact with the battery cell 2. Even if the drive rod 1141 is long, it can still ensure contact between the drive rod 1141 and the battery cell 2, ensuring that the drive rod 1141 can accurately drive the battery cell 2.

[0088] like Figure 13and 15 As shown, in some embodiments, the clamping mechanism 11 further includes a mounting member 116 extending in the vertical direction X, and the drive assembly 114 further includes a drive mounting member 1143 and a pressure sensor 1144. The drive mounting member 1143 is movably disposed on the mounting member 116 in the vertical direction X. The drive mounting member 1143 is provided with a mounting hole 11431 that extends in the vertical direction X. One end of the drive rod 1141 away from the support member 113 is inserted into the mounting hole 11431. The pressure sensor 1144 is disposed on the end of the drive rod 1141 away from the support member 113 and is used to measure the pressure of the drive rod 1141.

[0089] The drive mounting component 1143 is movably mounted on the mounting component 116 in the vertical direction X. Specifically, a slide rail extending in the vertical direction X can be provided on the mounting component 116, and a slider can be provided on the drive mounting component 1143. The movement of the drive mounting component 1143 relative to the mounting component 116 is achieved by the movement of the slider on the slide rail.

[0090] The drive rod 1141 is mounted by a drive mounting component 1143. When the drive mounting component 1143 moves relative to the mounting component 116 in the vertical direction X, it can drive the drive rod 1141 to move closer to or away from the battery cell 2 in the vertical direction X, thereby achieving contact between the battery cell 2 and the bottom wall 31. At this time, the drive unit 1142 can be an electric cylinder, a pneumatic cylinder, a hydraulic cylinder, or a cam mechanism, which drives the battery cell 2 to move in the vertical direction X. In other embodiments, the drive unit 1142 can also be a cam follower or a roller, which drives the drive mounting component 1143 to move in the vertical direction X through the cooperation of the cam follower or roller and the roller with the guide groove.

[0091] One end of the drive rod 1141, away from the support member 113, is inserted into the mounting hole 11431 and correspondingly positioned with the pressure sensor 1144. When the drive rod 1141 drives the battery cell 2 to move, the reaction force exerted by the battery cell 2 on the drive rod 1141 is transmitted to the pressure sensor 1144 through the drive rod 1141. The pressure sensor 1141 can then measure the pushing force of the drive rod 1141 on the battery cell 2. Real-time measurement of the driving force of the drive member 1141 ensures that the drive rod 1141 provides sufficient driving force to drive the battery cell 2 to abut against the bottom wall 31, while also preventing excessive driving force from damaging the battery cell 2.

[0092] like Figure 13 and 15As shown, in some embodiments, the drive assembly 114 further includes an elastic element 1145 and an adjusting element 1146. The elastic element 1145 is disposed between the drive rod 1141 and the pressure sensor 1144 along the vertical direction X. The adjusting element 1146 is disposed on the side of the pressure sensor 1144 away from the drive rod 1141, and the distance of the adjusting element 1146 along the vertical direction X is adjustable to adjust the compression amount of the elastic element 1145.

[0093] The elastic element 1145 can be a component made of rubber or a spring, etc. By setting the elastic element 1145, when the drive rod 1141 and the battery cell 2 come into contact, the buffering effect of the elastic element 1145 can avoid rigid contact between the drive rod 1141 and the battery cell 2, and also avoid rigid contact between the drive rod 1141 and the pressure sensor 1144, thus providing buffering protection for the battery cell 2 and the pressure sensor 1144.

[0094] like Figure 3 As shown, when the drive unit 1142 is a cam mechanism or a guide groove 1148, after the design of the cam mechanism and guide groove 1148 is completed, the moving distance of the drive rod 1141 along the vertical direction X is fixed during one push of the drive unit 1142. By setting the adjusting member 1146, when the adjusting member 1146 moves upward along the vertical direction X, it can drive the pressure sensor 1144 to move upward, thereby compressing the elastic member 1145 and increasing the elastic force of the elastic member 1145. In this way, even if the moving distance of the drive rod 1141 along the vertical direction X remains unchanged, the compression of the elastic member 1145 can be increased. When the drive rod 1141 and the battery cell 2 abut, the elastic member 1145 can provide a greater pushing force, ensuring effective contact between the battery cell 2 and the bottom wall 31. Conversely, when the adjusting member 1146 moves downward in the vertical direction X, the pushing force of the driving rod 1141 can be reduced without changing the moving distance of the driving rod 1141 in the vertical direction X, thus preventing excessive pushing force from damaging the battery cell 2. In other words, by providing the adjusting member 1146 and the elastic member 1145, the magnitude of the pushing force of the driving rod 1141 can be adjusted without changing the moving distance of the driving rod 1141 in the vertical direction X, ensuring effective contact between the battery cell 2 and the bottom wall 31.

[0095] like Figure 14 As shown, in some embodiments, a cup 4 is fitted on the side of the housing 3 away from the opening, and the positioning member 112 includes a first positioning part 1121 and a second positioning part 1122 arranged at intervals along the vertical direction X. The cup 4 is positioned in the first positioning part 1121, and the housing 3 is positioned in the second positioning part 1122.

[0096] By setting the first positioning part 1121 and the second positioning part 1122 to position the cup 4 and the housing 3 respectively, the housing 3 can be accurately positioned in the clamping mechanism 11, thereby improving the welding quality between the housing 3 and the battery cell 2.

[0097] In some embodiments, when the cup holder 4 and the housing 3 are made of magnetic materials, the first positioning part 1121 and the second positioning part 1122 are provided with magnetic parts on the surfaces near the cup holder 4 and the housing 3, and the cup holder 4 and the housing 3 are fixed by magnets generated by the magnetic parts. It should be noted that the magnetic parts can be permanent magnets or electromagnets, and the embodiments of this application are not limited to this.

[0098] like Figure 10 , 12 As shown in Figures 1 and 13, in some embodiments, the distance between the clamping member 111 and the positioning member 112 along the vertical direction X is adjustable.

[0099] Specifically, a slider can be set on the positioning member 112, and a guide rail that moves in the vertical direction X can be set on the mounting member 116. The distance between the positioning member 112 and the clamping member 111 can be adjusted by moving the slider on the guide rail.

[0100] By making the distance between the clamping member 111 and the positioning member 112 adjustable in the vertical direction X, increasing the distance between them before loading the housing 3 can prevent collisions between the housing 3 and the clamping member 111. After loading is completed, the positioning member 112 can approach the clamping member 111 under the push of the drive rod 1141, so that the bottom wall 31 of the housing 3 abuts against the clamping member 111, ensuring that the battery cell 2 can smoothly enter the housing 3.

[0101] like Figure 1 As shown, in some embodiments, the conveying mechanism 13 is a turret, and the welding device 1 includes a plurality of clamping mechanisms 11 disposed on the turret for sequentially conveying the battery cell 2 and the housing 3 to the welding area.

[0102] By setting up a turret, multiple clamping mechanisms 11 can be sequentially transported to the welding area 121 along the circumferential direction, thereby completing the welding connection between the battery cell 2 and the bottom wall 31 in sequence, so that the entire welding process can be carried out continuously and the production efficiency is improved.

[0103] like Figure 3As shown, in some embodiments, a cam follower 1147 is provided on the drive mounting component 1143, and the drive unit 1142 includes a guide member surrounding the outer periphery of the turret and a motor. The cam follower 1147 is disposed in the guide groove 1148 of the guide member. When the motor drives the turret to rotate, the cam follower 1147 drives the drive mounting component 1143 to move vertically under the guidance of the guide groove 1148. In this way, the clamping mechanism 11 can be conveyed along the preset direction S and the drive rod 1141 can drive the battery cell 2 along the vertical direction X with a single drive source. The structure is simple and energy-saving.

[0104] Specifically, such as Figures 1 to 15 As shown, during the feeding process, the housing 3 is placed on the positioning member 112. At this time, there is a certain clearance between the battery cell 2 and the support member 113. Subsequently, the battery cell 2 is released from the housing 3 under the action of gravity and abuts against the support member 113.

[0105] During welding, the turret rotates, sequentially transporting each clamping mechanism 11 to the welding area 121. During transport, the drive mounting component 1143 moves upwards in the vertical direction X under the drive of the guide groove, thereby driving the drive rod 1141 upwards to press the battery cell 2 into the housing 3 and abut against the bottom wall 31. Upon reaching the welding area 121, the welding mechanism 12 emits a laser, causing the battery cell 2 and housing 3 to complete laser welding as they pass through the welding area. Subsequently, the clamping mechanism 11 completes welding and gradually moves away from the welding area 121, while the next clamping mechanism 11 begins to be transported to the welding area 121, continuously and sequentially welding the battery cell 2 and housing 3 on each clamping mechanism 11.

[0106] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above 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.

[0107] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A welding device for welding a cell and a case, characterized by, The welding device comprises: a clamping mechanism for clamping the shell, and the shell is clamped downwardly on the clamping mechanism, and the electric core is accommodated in the shell; a welding mechanism comprising a laser, the welding mechanism is arranged on the upper side of the clamping mechanism, and is used for welding the electric core and the bottom wall of the shell; and a conveying mechanism for conveying the clamping mechanism to a welding area of the welding mechanism along a preset direction, and the laser emits laser to form a preset welding track on the bottom wall while the clamping mechanism passes through the welding area.

2. The welding device of claim 1, wherein, The welding device further comprises: a dust removal mechanism arranged correspondingly to the welding area, and a dust removal port of the dust removal mechanism is arranged towards the welding area to remove smoke and dust generated during welding.

3. The welding device of claim 2, wherein, The dust removal mechanism comprises: a chamber, the dust removal port is arranged on one side of the chamber close to the welding area, and the dust removal port is arranged extending along the preset direction; and a negative pressure device arranged in communication with the chamber.

4. The welding device according to claim 2 or 3, characterized in that The welding device comprises two dust removal mechanisms arranged correspondingly to two sides of the welding area respectively, and the dust removal ports of the two dust removal mechanisms are arranged towards the welding area.

5. The welding device of claim 1, wherein, The clamping mechanism comprises, in sequence along a vertical direction, a pressing member, a positioning member, a supporting member and a driving assembly, wherein the shell is clamped downwardly in the positioning member, the supporting member is used for supporting the electric core, and the driving assembly is used for driving the electric core to press the electric core into the shell, so that the electric core and the bottom wall of the shell abut.

6. The welding device of claim 5, wherein, The driving assembly comprises: a driving rod arranged extending along the vertical direction; a driving part drivingly connected with the driving rod to drive the driving rod to move along the vertical direction.

7. The welding device of claim 6, wherein, The clamping mechanism further comprises a limiting member arranged between the driving assembly and the supporting member, the limiting member is provided with a limiting hole penetrating along the vertical direction, and the driving rod is arranged penetrating in the limiting hole.

8. The welding device according to claim 6 or 7, characterized in that The clamping mechanism further comprises a mounting member arranged extending along the vertical direction, and the driving assembly further comprises: a driving mounting member movably arranged in the mounting member along the vertical direction, the driving mounting member is provided with a mounting hole penetrating along the vertical direction, and an end of the driving rod away from the supporting member is arranged penetrating in the mounting hole; and a pressure sensor arranged at the end of the driving rod away from the supporting member to measure the pressure of the driving rod.

9. The welding device of claim 8, wherein, The driving assembly further comprises: a resilient member arranged between the driving rod and the pressure sensor along the vertical direction; and an adjusting member arranged at a side of the pressure sensor away from the driving rod, and a distance of the adjusting member along the vertical direction is adjustable to adjust the compression amount of the resilient member.

10. The welding device of claim 5, wherein, A cup is arranged on a side of the shell away from the opening, the positioning member comprises a first positioning part and a second positioning part arranged spaced apart along the vertical direction, the cup is positioned in the first positioning part, and the shell is positioned in the second positioning part.

11. The welding device of claim 5, wherein, The distance of the pressing member and the positioning member along the vertical direction is adjustable.

12. The welding device of claim 1, wherein, The conveying mechanism is a turret, and the welding device comprises a plurality of clamping mechanisms arranged on the turret and used for sequentially conveying the battery cell and the shell to the welding area.

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