Positioning device and convergence plate welding equipment

Abstract

The embodiment of the utility model provides a positioning device and convergence disc welding equipment, and relates to the technical field of battery manufacturing. The positioning device is used for positioning a workpiece and a shell part when the workpiece is fixed in the shell part and comprises a rack, a pressing part, a fixing part and a pressure sensor, and the pressing part is fixedly connected with the rack; the fixing part is used for fixing the shell part and located below the pressing part, and the fixing part is movably connected with the rack and can move in a reciprocating mode in the Z-axis direction, so that the workpiece in the shell part makes contact with the pressing part, the workpiece in the shell part and the pressing part jointly press the workpiece in the shell part, and the edge of the workpiece abuts against the inner wall of the shell part. The pressure sensor is connected to the fixing piece and used for monitoring the pressure value of the pressure borne by the workpiece. In the Z-axis direction, the fixing piece can move in a reciprocating mode according to the pressure value. By arranging the pressure sensor, the feeding amount of the fixing piece in the Z-axis direction can be automatically adjusted according to detection of the pressure sensor, and therefore the pressing degree of the fixing piece and the pressing piece on the workpiece is adjusted.

Description

Technical Field

[0001] This utility model relates to the field of battery manufacturing technology, and more specifically, to a positioning device and a busbar welding equipment. Background Technology

[0002] With the rise of the new energy industry, lithium-ion batteries have been widely adopted in electric vehicles, energy storage, marine applications, and aviation. Cylindrical batteries, as one of the mainstream battery products, are gaining increasing market share and demand. Currently, during the production of cylindrical batteries, after the busbar is press-fitted into the battery casing, the thin material of the busbar and the slight interference fit cause a springback force, resulting in the busbar shifting relative to the inner wall of the battery casing. This creates a gap between the busbar and the inner wall, leading to defects during laser welding. Therefore, a cylindrical battery busbar welding fixture is needed when welding the busbar and the battery casing.

[0003] However, current busbar welding fixtures cannot precisely control the press-fitting of the busbar, leading to poor press-fitting due to excessive or insufficient clamping force. Excessive clamping force can damage the battery cell, while insufficient clamping force can cause poor welding in the next stage, resulting in incomplete soldering or weld bursts. Utility Model Content

[0004] This utility model provides a positioning device and a manifold welding equipment, which can automatically adjust the feed amount of the fixing part in the Z-axis direction according to the detection of the pressure sensor, adjust the distance between the fixing part and the clamping part, thereby adjusting the clamping degree of the fixing part and the clamping part on the workpiece, thus preventing the workpiece from being crushed or not clamped properly, and improving the subsequent processing quality.

[0005] The embodiments of this utility model can be implemented as follows:

[0006] An embodiment of this utility model provides a positioning device for positioning the workpiece and the housing component when fixing the workpiece inside the housing component, comprising:

[0007] frame;

[0008] A clamping component is fixedly connected to the frame;

[0009] A fixing member is used to fix the housing component and is located below the clamping member. The fixing member is movably connected to the frame and can reciprocate along the Z-axis direction, so that the workpiece inside the housing component contacts the clamping member and together clamps the workpiece inside the housing component, so that the edge of the workpiece abuts against the inner wall of the housing component.

[0010] A pressure sensor is connected to the fixing member to monitor the pressure value of the pressure applied to the workpiece; and the fixing member is reciprocally movable in the Z-axis direction according to the pressure value.

[0011] In one of the embodiments, the fixing member comprises a bottom wall and a side wall, which together define a receiving cavity, and the housing member is received in the receiving cavity.

[0012] The inner wall of the fixing member is provided with at least one positioning hole, and a positioning member is arranged in the positioning hole and can be extended out of or retracted into the positioning hole along the axis direction of the positioning hole.

[0013] In one of the embodiments, the side wall of the fixing member is provided with at least two groups of positioning holes in the height direction of the receiving cavity; each group of positioning holes comprises at least three positioning holes, and the positioning holes in each group of positioning holes are distributed in a circumferential direction.

[0014] In one of the embodiments, the positioning hole is further provided with an elastic member, and the elastic member is connected to the positioning member.

[0015] In one of the embodiments, the elastic member is a spring.

[0016] In one of the embodiments, the positioning member is in the shape of a sphere.

[0017] In one of the embodiments, the sphere is rollable.

[0018] In one of the embodiments, a Z-axis driving member is used to drive the fixing member to move in the Z-axis direction.

[0019] A buffer member is elastically connected between the Z-axis driving member and the fixing member, and the buffer member is reciprocally movable in the Z-axis direction to buffer the impact force of the pressing member on the workpiece.

[0020] In one of the embodiments, a Z-axis driving member is used to drive the fixing member to move in the Z-axis direction, and the Z-axis driving member is a linear module driving member.

[0021] The embodiments of the utility model also provide a busbar welding equipment which is used for welding and fixing a busbar in a battery shell, and the busbar welding equipment comprises:

[0022] The positioning device is the positioning device in any one of the above embodiments, the workpiece is the busbar, the housing member is the battery shell, the battery shell contains an electric core, and the busbar is located on the end face of the electric core; and

[0023] The welding device comprises a welding head used for welding the busbar and the battery shell.

[0024] In one of the embodiments, the positioning device further comprises a rotating driving member for driving the fixed member to rotate circumferentially to drive the battery shell to rotate circumferentially relative to the welding head.

[0025] In one of the embodiments, the busbar welding device further comprises a visual identification positioning device for identifying the placement angle of the busbar, and the visual identification positioning device and the welding device are arranged along the Y-axis direction.

[0026] The positioning device and the busbar welding device have the following advantages, for example:

[0027] The positioning device is used for positioning the workpiece and the shell member when the workpiece is fixed in the shell member, and comprises a rack, a pressing member, a fixed member and a pressure sensor, the pressing member is fixedly connected with the rack; the fixed member is used for fixing the shell member and is located below the pressing member, the fixed member is movably connected with the rack and can reciprocate along the Z-axis direction, so that the workpiece in the shell member contacts the pressing member and the workpiece in the shell member is pressed together, and the edge of the workpiece abuts against the inner wall of the shell member. By arranging the pressing member and the fixed member, the shell member can be fixed and pressed, so that subsequent machining processes can be carried out. The pressure sensor is connected with the fixed member and is used for monitoring the pressure value of the pressure borne by the workpiece; along the Z-axis direction, the fixed member can reciprocate according to the pressure value. By arranging the pressure sensor, the feeding amount of the fixed member along the Z-axis direction can be automatically adjusted according to the detection of the pressure sensor, the distance between the fixed member and the pressing member is adjusted, so that the pressing degree of the fixed member and the pressing member to the workpiece is adjusted, and then the workpiece is prevented from being pressed to be damaged or not pressed tightly, so that the subsequent machining quality is improved. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor.

[0029] Figure 1 The schematic diagram of the busbar welding device provided in the embodiments of the present application is shown in the figure;

[0030] Figure 2 The partial schematic diagram of the positioning device provided in the embodiments of the present application is shown in the figure;

[0031] Figure 3 The schematic diagram of the fixed member provided in the embodiments of the present application is shown in the figure;

[0032] Figure 4The sectional view schematic diagram of the position of the positioning member in the fixing member is provided for the embodiment of the utility model.

[0033] Figure 5 The schematic view of the pressing member and the rack is provided for the embodiment of the utility model.

[0034] Figure 6 The explosion schematic view of the pressing member and the rack is provided for the embodiment of the utility model.

[0035] Icon: 1000 - busbar welding equipment;100 - positioning device;110 - rack;120 - pressing member;121 - first adjusting seat;1211 - fixed hole;1212 - second bar hole;122 - pressing head;123 - second adjusting seat;1231 - first bar hole;124 - positioning block;125 - second driving member;126 - bearing;127 - bearing locking member;128 - second driving member mounting seat;1281 - third bar hole;130 - fixing member;131 - bottom wall;132 - side wall;1321 - positioning hole;133 - accommodating cavity;134 - positioning member;135 - elastic member;140 - pressure sensor;150 - Z-axis linear motion assembly;151 - Z-axis driving member;152 - first guide rail;153 - first sliding block;160 - buffer member;170 - rotary driving member;200 - welding device;300 - visual identification positioning device. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. The components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the utility model.

[0038] It should be noted that: similar labels and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0039] In the description of the utility model, it needs to be explained that if the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the utility model product is used, it is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element indicated must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0040] In addition, if the terms "first", "second" and the like are used only for differentiation in description and cannot be understood as indicating or implying relative importance.

[0041] It should be noted that the features in the embodiments of the utility model can be combined with each other without conflict.

[0042] With the vigorous development of the new energy industry, lithium ion batteries have been widely popularized in the fields of electric vehicles, energy storage systems, navigation and aviation, etc. As the current mainstream battery type, the market share of cylindrical batteries is continuously increasing, and the demand is also increasing. In the production process of cylindrical batteries, after the busbar is pressed into the battery shell, due to the thin material of the busbar itself and the slight interference of the fitting size, the busbar will be affected by the rebound force during the pressing process, which may cause deviation and cause gaps between the busbar and the inner wall of the battery shell. Such gaps may cause poor welding problems in the subsequent laser welding process. In order to solve this problem, an effective busbar welding fixture is needed. However, the existing welding fixture cannot accurately control the pressing process of the busbar, which may cause the pressing force to be too large or too small during pressing. Excessive pressing force may damage the workpiece and the battery, and insufficient pressing force may cause subsequent poor welding, such as virtual welding or the generation of welding explosion points.

[0043] Based on this, please refer to Figure 1 The positioning device 100 provided in the embodiments of the utility model can effectively improve the above-mentioned technical problems. The positioning device 100 can automatically adjust the feed amount of the fixing member 130 in the Z-axis direction according to the detection of the pressure sensor 140, adjust the distance between the fixing member 130 and the pressing member 120, thereby adjusting the pressing degree of the fixing member 130 and the pressing member 120 on the workpiece, and preventing the workpiece from being pressed or not being pressed, so as to improve the subsequent processing quality. The positioning device 100 is applied to the busbar welding equipment 1000, of course, the positioning device 100 can also be applied to other processing equipment that needs to clamp and fix the workpiece, which is not limited here. The equipment with the positioning device 100 has the same functions as described above, which will not be repeated here.

[0044] Figure 1A schematic view of the busbar welding equipment 1000 provided in the embodiment of the utility model is shown in the figure, Figure 1 The busbar welding equipment 1000 provided in the embodiment includes a positioning device 100 and a welding device 200, the positioning device 100 is used for positioning the workpiece and the shell part when the workpiece is fixed in the shell part. The workpiece in the embodiment is a busbar, the shell part is a battery shell, the battery shell contains a battery cell, and the busbar is located on the end face of the battery cell. The welding device 200 includes a welding head used for welding the busbar and the battery shell. After the battery shell is fixed on the positioning device 100, the busbar is fixed on the battery shell, and the busbar and the battery shell are positioned, then the busbar is welded by the welding head, so that the busbar is fixedly connected with the battery shell. Specifically, the welding device 200 in the embodiment is a laser, of course, the welding device 200 can also be other welding structures, which are not limited here.

[0045] Figure 2 A part of the positioning device 100 provided in the embodiment of the utility model is shown in the figure. In order to facilitate the welding head to weld the position of the busbar required to be welded, please refer to Figure 1 , and in combination with Figure 2 The positioning device 100 in the embodiment further includes a rotating driving part 170, which is used for driving the fixed part 130 to rotate circumferentially, so as to drive the battery shell to rotate circumferentially relative to the welding head. The rotating driving part 170 can drive the battery shell to rotate, so as to adjust the position of the busbar, so that the busbar is rotated to the position required to be welded, so that the welding head of the welding device 200 can weld the position of the busbar required to be welded. The rotating driving part 170 in the embodiment is a rotating motor, which is drivingly connected with the fixed part 130 through a shaft coupling, so as to drive the fixed part 130 to rotate. Of course, the rotating driving part 170 can also be a rotating cylinder and other structures, which are not limited here.

[0046] In addition, please continue to refer to Figure 1 The busbar welding equipment 1000 in the embodiment further includes a visual recognition positioning device 300, the visual recognition positioning device 300 is used for recognizing the placement angle of the busbar, and the visual recognition positioning device 300 and the welding device 200 are arranged along the Y-axis direction. Since the busbar is manually placed in the battery shell, it can be placed at any angle. After being recognized by the visual recognition positioning device 300, the position of the busbar can be adjusted, so that the position required to be welded is rotated to align with the welding head, so as to facilitate welding. The visual recognition positioning device 300 in the embodiment includes a camera, the visual recognition positioning device 300 recognizes the angle of the current busbar by the way of photographing positioning, and then adjusts the placement angle of the busbar according to the recognition result. Of course, the visual recognition positioning device 300 can also replace the camera with a sensor and other components, as long as the placement angle of the busbar can be recognized.

[0047] The position of the busbar plate can be manually adjusted or adjusted by the rotating drive 170. Of course, the angle of the busbar plate can also be rotated by other rotating devices, which is not limited herein. In the embodiment, the angle of the busbar plate is adjusted by the rotating drive 170. Therefore, the visual recognition positioning device 300 in the embodiment further comprises a controller electrically connected with the camera or the sensor and electrically connected with the rotating drive 170. The visual recognition positioning device 300 recognizes the angle of the current busbar plate by the way of positioning by photographing, and then according to the recognition result, the controller feeds back the processing signal to the rotating drive 170, so as to control the rotating angle of the rotating drive 170, so that the rotating drive 170 rotates with the busbar plate to the angle convenient for welding.

[0048] The positioning device 100 will be described in detail below.

[0049] Please refer to Figure 1 and Figure 2 The positioning device 100 in the embodiment is used for positioning the workpiece and the shell part when the workpiece is fixed in the shell part, which comprises a rack 110, a pressing part 120, a fixing part 130 and a pressure sensor 140. The pressing part 120 is fixedly connected with the rack 110. The fixing part 130 is used for fixing the shell part and is located below the pressing part 120. The fixing part 130 is movably connected with the rack 110 and can reciprocate along the Z-axis direction, so that the workpiece in the shell part contacts with the pressing part 120 and the workpiece and the pressing part 120 jointly press the workpiece in the shell part, so that the edge of the workpiece abuts against the inner wall of the shell part. The pressure sensor 140 is connected with the fixing part 130 and is used for monitoring the pressure value of the pressure borne by the workpiece. In the Z-axis direction, the fixing part 130 can reciprocate according to the pressure value. That is, if the pressure sensor 140 detects that the pressure between the pressing part 120 and the workpiece does not reach the set value, the fixing part 130 continues to move along the Z-axis direction. If the pressure sensor 140 detects that the pressure between the pressing part 120 and the workpiece reaches the set value, the fixing part 130 keeps the height unchanged and does not move along the Z-axis direction. When the relative position between the fixing part 130 and the pressing part 120 is adjusted at the beginning, the fixing part 130 can be moved along the Z-axis direction at a high speed until the gap between the pressing part 120 and the workpiece is small, and then the fixing part 130 is moved at a low speed. According to the value of the pressure sensor 140 monitored in real time, the feeding amount is slowly adjusted until the pressure reaches the set value, and then the fixing part 130 stops moving, so as to ensure that the workpiece and the battery cell are not damaged during each pressing.

[0050] By setting the pressing piece 120 and the fixing piece 130, the shell piece can be fixed and pressed, so as to carry out subsequent machining processes. By setting the pressure sensor 140, the feeding amount of the fixing piece 130 in the Z-axis direction can be automatically adjusted according to the detection of the pressure sensor 140, the distance between the fixing piece 130 and the pressing piece 120 is adjusted, so as to adjust the pressing degree of the fixing piece 130 and the pressing piece 120 to the workpiece, and then prevent the workpiece from being pressed or not pressed, so as to improve the subsequent machining quality.

[0051] Please continue to refer to Figure 1 and Figure 2 The positioning device 100 in the embodiment further includes a Z-axis driving piece 151 and a buffer piece 160. The Z-axis driving piece 151 is used to drive the fixing piece 130 to move along the Z-axis direction. The buffer piece 160 is elastically connected between the Z-axis driving piece 151 and the fixing piece 130, and can reciprocate along the Z-axis direction to buffer the impact force of the pressing piece 120 to the workpiece. The Z-axis driving piece 151 in the embodiment is used to drive the fixing piece 130 to move along the Z-axis direction, and the Z-axis driving piece 151 is a linear module driving piece. The linear module driving piece can ensure the moving precision, and can be adjusted by feedback of the pressure sensor 140 to ensure that the workpiece and the battery cell are not damaged during each pressing process. In addition, the pressure sensor 140 in the embodiment is installed between the fixing piece 130 and the buffer piece 160. The Z-axis driving piece 151 transmits the force upwardly lifted along the Z-axis direction to the fixing piece 130 through the pressure sensor 140 through the buffer piece 160. In this way, the Z-axis driving piece 151 and the fixing piece 130 are not rigidly connected, and the pressure is entirely applied to the pressure sensor 140, so that the pressure sensor 140 can accurately detect the pressure value when the busbar is pressed.

[0052] The buffer piece 160 in the embodiment is in the form of a spring plus a linear bearing 126. Of course, when the pressure is too large, the spring is compressed, and the guide shaft absorbs the displacement amount through the linear bearing 126, so as to prevent the fixing piece 130 or the battery from being damaged. In this way, the structure of the buffer piece 160 can be simplified, and the cost can be reduced. The buffer piece 160 can also be designed in the structure of a spring plus a sliding rod or a spring plus a linear guide rail, which is not limited here. Of course, the buffer piece 160 can also use a gas cylinder plus a linear guide mechanism to realize the flexible connection between the Z-axis driving piece 151 and the fixing piece 130, so as to be suitable for application scenarios with high requirements.

[0053] The "movably connecting the fixing member 130 and the rack 110" is specifically movably connecting the fixing member 130 and the rack 110 through the Z-axis linear motion assembly 150, and the Z-axis linear motion assembly 150 can drive the fixing member 130 to move along the Z-axis direction relative to the rack 110. The Z-axis linear motion assembly 150 in the embodiment includes a first guide rail 152, a first sliding block 153 and a Z-axis driving member 151, the first sliding block 153 is slidably connected with the first guide rail 152, and the first sliding block 153 is fixedly connected with the fixing member 130; the first sliding block 153 is connected with the Z-axis driving member 151, and the Z-axis driving member 151 is used for driving the first sliding block 153 to move on the first guide rail 152, so as to drive the fixing member 130 to move along the Z direction. The Z-axis driving member 151 in the embodiment is a lifting motor, of course, the Z-axis driving member 151 can also be replaced by a cylinder, a hydraulic cylinder or a motor and other linear driving members, which are not limited here. In addition, the Z-axis linear motion assembly 150 can also be designed as other structural forms, such as a ball screw, a sliding groove and sliding block structure, which are not limited here.

[0054] Please refer to Figure 1 and Figure 2 The positioning device 100 in the embodiment further includes a Y-axis moving assembly, the Y-axis moving assembly is movably connected with the fixing member 130, and the Y-axis moving assembly can drive the fixing member 130 to move along the Y direction, and the Y direction is perpendicular to the Z direction. Specifically, the Y-axis moving assembly can be a guide rail and sliding block mechanism, or other linear motion mechanisms, which are not limited here. In addition, the positioning device 100 can further include moving assemblies in other directions, to drive the fixing member 130 to move along other directions, to meet different displacement requirements and processing requirements, which are not limited here.

[0055] Figure 3 It is a schematic view of the fixing member 130 provided in the embodiment of the utility model; Figure 4 It is a sectional view schematic view of the position of the positioning member 134 in the fixing member 130 provided in the embodiment of the utility model. Please refer to Figure 3 and Figure 4 and combine Figure 2 The fixing member 130 in the embodiment includes a bottom wall 131 and a side wall 132, and the bottom wall 131 and the side wall 132 jointly define a containing cavity 133, and the shell member is contained in the containing cavity 133. The inner wall of the fixing member 130 is provided with at least one positioning hole 1321, the positioning hole 1321 is provided with a positioning member 134, and the positioning member 134 can be extended or retracted in the positioning hole 1321 along the axis direction of the positioning hole 1321. By arranging the positioning member 134 which can be extended or retracted in the positioning hole 1321, the fixing member 130 can clamp and fix batteries of different diameters or different heights, so that the fixing member 130 can clamp and fix batteries of different sizes, and the versatility and compatibility of the fixing member 130 are improved.

[0056] The inner wall of the fixing member 130 is provided with at least one positioning hole 1321. Specifically, the bottom wall 131 of the fixing member 130 can be provided with at least one positioning hole 1321, or the side wall 132 of the fixing member 130 can be provided with at least one positioning hole 1321. Of course, the bottom wall 131 and the side wall 132 of the fixing member 130 can be provided with positioning holes 1321 at the same time, which is not limited herein. In the embodiment, the inner wall of the fixing member 130 is provided with at least two groups of positioning holes 1321 along the height direction of the accommodating cavity 133. Each group of positioning holes 1321 includes at least three positioning holes 1321, and each positioning hole 1321 in each group of positioning holes 1321 is distributed in a circumferential direction.

[0057] The shape of the fixing member 130 in the embodiment is a cylindrical body with an accommodating cavity 133, which is used for positioning a cylindrical battery cell. Of course, the shape of the fixing member 130 can also be a cuboid with an accommodating cavity 133, which is used for positioning a square battery cell. The shape of the fixing member 130 is determined according to the specific battery type, which is not limited herein.

[0058] Please continue to refer to Figure 4 In order to facilitate the placement of the battery into the fixing member 130 and to ensure that the battery is not easily damaged during placement, the positioning hole 1321 in the embodiment is further provided with an elastic member 135 connected to the positioning member 134. When the battery is placed into the fixing member 130, the positioning member 134 is pressed by the battery and acts on the elastic member 135, so that the battery is not damaged or scratched during placement, and the elastic member 135 can also play an accurate positioning role. In addition, the battery is not easily damaged when it is taken out. Specifically, the elastic member 135 in the embodiment is a spring. Of course, the elastic member 135 can also be a structure made of elastic materials such as rubber, which is not limited herein.

[0059] In addition, the shape of the positioning member 134 in the embodiment is a sphere. The sphere has high self-adaptive ability. No matter in which direction the force is applied, the sphere can automatically adjust its contact point to ensure uniform distribution of contact force and stable positioning. In addition, due to the small contact surface of the sphere, the friction is low, and compared with the flat or other shaped positioning member 134, the spherical design can effectively reduce wear and heat generation. This is very helpful to improve the service life of the positioning member 134 and reduce the maintenance frequency. The sphere can disperse the force from multiple directions, so that the sphere can withstand a larger load and remain stable. The sphere in the embodiment can roll. That is, the positioning member 134 is in rolling contact with the placed battery, which can reduce the friction to reduce or prevent damage to the battery.

[0060] Figure 5 A schematic view of the pressing member 120 and the rack 110 provided in the embodiment of the utility model; Figure 6The utility model discloses an explosion schematic view of the pressing piece 120 and the rack 110 provided in the embodiment of the utility model. In order to improve the versatility of the positioning device 100, please refer to Figure 5 And Figure 6 The pressing piece 120 in the embodiment includes first adjusting seat 121 and pressure head 122, and the first adjusting seat 121 is connected with the rack 110. A fixing hole 1211 is formed in the first adjusting seat 121, and the pressure head 122 is arranged in the fixing hole 1211. The pressure head 122 and the fixing part 130 jointly press the bus bar disc and the battery shell. In other embodiments, the pressing piece 120 further includes a second adjusting seat 123. The first adjusting seat 121 and the second adjusting seat 123 are movably connected. The first adjusting seat 121 can move along the Y-axis direction relative to the second adjusting seat 123. Specifically, at least one first slot 1231 is formed in the second adjusting seat 123. The first slot 1231 extends along the Y-axis direction. The first adjusting seat 121 is movably connected with the second adjusting seat 123 through the at least one first slot 1231.

[0061] Please continue to refer to Figure 5 And Figure 6 The pressing piece 120 further includes a positioning block 124. The positioning block 124 is connected with the first adjusting seat 121 and is used for positioning the welding position of the bus bar disc. Further, the pressing piece 120 further includes a second driving part 125. The second driving part 125 is connected with the positioning block 124. The second driving part 125 is used for driving the positioning block 124 to move along the X-axis direction relative to the first adjusting seat 121. The X-axis direction is perpendicular to the Y-axis direction and the Z-axis direction. Specifically, at least one second slot 1212 is formed in the first adjusting seat 121. The second slot 1212 extends along the X-axis direction. The second driving part 125 is movably connected with the first adjusting seat 121 through the at least one second slot 1212. The pressing piece 120 in the embodiment further includes a second driving part mounting seat 128. At least one third slot 1281 is formed in the second driving part mounting seat 128. The third slot 1281 extends along the X-axis direction. The second driving part 125 is movably connected with the second driving part mounting seat 128 through the third slot 1281.

[0062] In order to make the bus bar disc and the battery shell tightly fit, make the inner wall of the bus bar disc and the battery shell in the welding process always in the state of being pressed, and not loose and displace in the welding process, thereby improving the welding quality, the pressing piece 120 in the embodiment further includes a bearing 126 and a bearing locking part 127. The bearing 126 is installed in the fixing hole 1211. The bearing locking part 127 is sleeved in the bearing 126, and the bearing locking part 127 is fixedly connected with the pressure head 122. The bearing locking part 127 is used for cooperating with the fixing part 130.

[0063] According to the bus bar disc welding equipment 1000 provided in the embodiment, the working principle is as follows:

[0064] The battery shell is placed into the fixing member 130, and after the fixing member 130 completes positioning of the battery shell, the busbar plate is placed into the inside of the battery shell. Then the Y-axis moving assembly drives the battery shell to move to a visual detection station, the visual recognition positioning device 300 determines the placement angle of the current busbar plate, and according to the recognition result, the busbar plate is rotated to the angle consistent with the pressing member 120 through the rotary driving member 170. Then the Y-axis moving assembly moves the battery shell to be aligned with the pressing member 120. After that, the Z-axis driving member 151 lifts the fixing member 130 to drive the battery shell and the busbar plate to be lifted, so that the pressing member 120 presses the busbar plate. Then the feeding amount of the Z-axis driving member 151 is automatically adjusted through the detection value of the pressure sensor 140, so as to prevent the workpiece and the battery cell from being damaged due to excessive extrusion force, or the busbar plate from not being pressed tightly due to insufficient extrusion force. When the detection value of the pressure sensor 140 is within the set range, the welding head of the welding device 200 welds the busbar plate. During welding, the welding head is stationary, and the rotary driving member 170 rotates with the fixing member 130 to drive the battery shell and the busbar plate to rotate, so as to complete the welding of the entire busbar plate flange part and the shell member.

[0065] In summary, the positioning device 100 is used for positioning the workpiece and the shell member when the workpiece is fixed in the shell member, and includes the rack 110, the pressing member 120, the fixing member 130 and the pressure sensor 140. The pressing member 120 is fixedly connected with the rack 110. The fixing member 130 is used for fixing the shell member and is located below the pressing member 120. The fixing member 130 is movably connected with the rack 110 and can reciprocate along the Z-axis direction, so that the workpiece in the shell member contacts the pressing member 120 and the workpiece in the shell member is pressed tightly together, and the edge of the workpiece abuts against the inner wall of the shell member. The pressure sensor 140 is connected with the fixing member 130 and is used for monitoring the pressure value of the pressure borne by the workpiece. In the Z-axis direction, the fixing member 130 can reciprocate according to the pressure value. By arranging the pressing member 120 and the fixing member 130, the shell member can be fixed and pressed tightly, so as to facilitate subsequent processing procedures. By arranging the pressure sensor 140, the feeding amount of the fixing member 130 in the Z-axis direction can be automatically adjusted according to the detection of the pressure sensor 140, the distance between the fixing member 130 and the pressing member 120 is adjusted, the pressing degree of the fixing member 130 and the pressing member 120 to the workpiece is adjusted, and then the workpiece is prevented from being damaged or not being pressed tightly, so as to improve the subsequent processing quality.

[0066] The above merely describes the specific implementation of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which shall be covered in the protection scope of the present application.

Claims

1. A positioning device for positioning the workpiece and the housing component when fixing the workpiece inside the housing component, characterized in that, The positioning device (100) is the positioning device (100) of any one of claims 1-7, the workpiece is the bus bar, the shell member is the battery shell, the battery shell contains an electric core, and the bus bar is located on the end face of the electric core; and The welding device (200) comprises a welding head for welding the bus bar and the battery shell.

9. The bus bar welding equipment according to claim 8, wherein: The positioning device (100) further comprises a rotating drive member (170) for driving the fixed member (130) to rotate circumferentially, so as to drive the battery shell to rotate circumferentially relative to the welding head. Further comprising: ​ ​ ​ 3. The positioning device of claim 2, wherein: ​ 4. The positioning device of claim 2, wherein: ​ 5. The positioning device of claim 4, wherein: ​ 6. The positioning device of claim 2, wherein: ​ 7. The positioning device of claim 1, wherein, ​ ​ ​ 8. A busbar welding device for welding and fixing a busbar into a battery casing, characterized in that, ​ ​ ​ ​ ​ 10. The busbar welding apparatus of claim 9, wherein, ​ A visual recognition positioning device (300) is arranged to recognize the placement angle of the busbar, and the visual recognition positioning device (300) and the welding device (200) are arranged along the Y-axis direction.

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