Lithium battery compression welding device

Abstract

The utility model belongs to lithium battery processing equipment technical field especially relates to a kind of lithium battery press bonding welding device, including rack, controller, driving mechanism, pressure welding head, guide mechanism and positioning mechanism, and positioning mechanism includes positioning base plate and locating plate.Positioning base plate is fixed in guide component, and is provided with locating hole, locating plate is set in locating hole, one end of locating plate is fixed in positioning base plate, and the other end extends out of locating hole downwards;Locating plate is provided with four, and is evenly fixed in positioning base plate.The lithium battery press bonding welding device provided in the application forms positioning area by four evenly distributed L-shaped locating plates, cooperates with the realization of the quick positioning and limiting of lithium battery by leading-in slope, effectively avoids the horizontal deviation of lithium battery in welding process, effectively guarantees that nickel sheet and polarity column accurately align, improves welding precision, solves the deviation problem caused by the positioning loss of traditional device.

Description

Technical Field

[0001] This utility model belongs to the technical field of lithium battery processing equipment, and in particular relates to a lithium battery pressing and welding device. Background Technology

[0002] In the lithium battery production process, nickel sheets need to be welded onto the polarity posts of the lithium battery to achieve the battery's circuit connection. Traditional lithium battery pressing and welding equipment usually uses a cylinder or ordinary motor as the drive structure to directly drive the pressing and welding head to move up and down, so that the pressing and welding head contacts the nickel sheets on the polarity posts of the lithium battery and completes the welding operation.

[0003] However, such traditional devices have the following shortcomings: they lack an effective positioning mechanism, and the lithium battery is easily affected by external forces during the welding process, causing horizontal displacement, resulting in misalignment between the nickel sheet and the polar post, and thus welding quality problems such as incomplete welding and desoldering. Utility Model Content

[0004] The purpose of this invention is to provide a lithium battery pressing and welding device, which aims to solve the technical problem of misalignment between the nickel sheet and the polar post in the prior art, resulting in welding quality problems such as incomplete welding and desoldering.

[0005] To achieve the above objectives, the lithium battery pressing and welding device provided in this embodiment includes a frame, a controller, a drive mechanism, a pressing head, a guide mechanism, and a positioning mechanism. The controller is fixed to the frame, the drive mechanism is fixed to the frame and connected to the guide mechanism, the pressing head is fixed to the drive mechanism and positioned above the positioning mechanism, the guide mechanism is fixed to the frame, and the positioning mechanism is connected to the guide mechanism.

[0006] The positioning mechanism includes a positioning base plate and a positioning plate. The positioning base plate is fixed to the guiding mechanism and is provided with a positioning hole. The positioning plate is disposed in the positioning hole. One end of the positioning plate is fixed to the positioning base plate, and the other end extends downward out of the positioning hole. Four positioning plates are provided and are evenly fixed to the positioning base plate.

[0007] As an optional solution of this utility model, the positioning plate is L-shaped and has an inlet ramp.

[0008] As an optional solution of this utility model, a limiting frame is provided at the bottom of the frame, and multiple limiting frames are provided, all of which are fixedly connected to the frame; the limiting frame is located below the positioning base plate.

[0009] As an optional solution of this utility model, the driving mechanism includes a driving electric cylinder, a driving plate, and a lifting plate. The driving electric cylinder includes a driving cylinder body and a piston rod. The driving cylinder body is fixed to the frame. One end of the piston rod is movably connected to the driving cylinder body, and the other end is fixedly connected to the driving plate. The driving plate is fixedly connected to the piston rod and the guide mechanism respectively. The lifting plate is fixed to the driving plate and is provided with clearance holes. Multiple clearance holes are provided and are evenly distributed on the lifting plate.

[0010] As an optional solution of this utility model, multiple pressure welding heads are provided and are evenly fixed on the bottom side of the drive plate. The number of pressure welding heads is the same as the number of clearance holes, and they are arranged to overlap with the clearance holes.

[0011] As an optional solution of this utility model, the guiding mechanism includes a guide post, a first guide cylinder, a second guide cylinder, and a buffer spring. The guide post is fixedly connected to the frame, and the first guide cylinder and the second guide cylinder are sequentially movably inserted through the guide post, with the first guide cylinder positioned above the second guide cylinder. The buffer spring is sleeved on the guide post, with one end of the buffer spring fixedly connected to the bottom of the guide post and the other end fixedly connected to the bottom of the second guide cylinder.

[0012] As an optional solution of this utility model, two guide mechanisms are provided, and the two guide mechanisms are arranged in parallel and symmetrically.

[0013] The lithium battery pressing and welding apparatus provided in this embodiment of the present invention has at least one of the following technical effects:

[0014] The lithium battery pressing and welding device provided in this application forms a positioning area through four evenly distributed L-shaped positioning plates. With the help of the guide slope, it realizes the rapid positioning and limiting of the lithium battery, effectively avoids the horizontal displacement of the lithium battery during the welding process, effectively ensures the accurate alignment of the nickel sheet and the polar post, improves the welding accuracy, and solves the misalignment problem caused by the lack of positioning in traditional devices. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A side view of the lithium battery pressing and welding apparatus provided in an embodiment of this utility model.

[0017] Figure 2A perspective view of the lithium battery pressing and welding device provided in an embodiment of this utility model.

[0018] Figure 3 A side view of the lithium battery pressing and welding device in use, as provided in an embodiment of this utility model.

[0019] Figure 4 The perspective view of the lithium battery pressing and welding device provided in the embodiment of this utility model is shown after omitting the frame, controller, and pressing head.

[0020] Figure 5 A perspective view of the positioning plate of the lithium battery pressing and welding device provided in an embodiment of this utility model.

[0021] The following are the labeling elements in the figure:

[0022] 1. Frame; 2. Controller; 3. Drive mechanism; 4. Welding head; 5. Guide mechanism; 6. Positioning mechanism; 7. Lithium battery;

[0023] 11. Limiting bracket;

[0024] 31. Drive cylinder; 32. Drive plate; 33. Lifting plate;

[0025] 51. Guide post; 52. First guide cylinder; 53. Second guide cylinder; 54. Buffer spring;

[0026] 61. Positioning base plate; 62. Positioning plate;

[0027] 311. Drive cylinder block; 312. Piston rod;

[0028] 331. Clearance hole;

[0029] 611. Positioning hole;

[0030] 621. Import the inclined plane. Detailed Implementation

[0031] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the embodiments of this utility model, and should not be construed as limiting the utility model.

[0032] In the description of the embodiments of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] 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 one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0034] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," 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. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0035] In one embodiment of this utility model, such as Figures 1-5 As shown, a lithium battery pressing and welding device is provided, including a frame 1, a controller 2, a drive mechanism 3, a pressing head 4, a guide mechanism 5, and a positioning mechanism 6. The controller 2 is fixed to the frame 1, the drive mechanism 3 is fixed to the frame 1 and connected to the guide mechanism 5, the pressing head 4 is fixed to the drive mechanism 3 and positioned above the positioning mechanism 6; the guide mechanism 5 is fixed to the frame 1, and the positioning mechanism 6 is connected to the guide mechanism 5.

[0036] The positioning mechanism 6 includes a positioning base plate 61 and a positioning plate 62. The positioning base plate 61 is fixed to the guide mechanism and has a positioning hole 611. The positioning plate 62 is disposed in the positioning hole 611, with one end fixed to the positioning base plate 61 and the other end extending downward out of the positioning hole 611. Four positioning plates 62 are provided and evenly fixed to the positioning base plate 61. The positioning base plate 61 is fixedly connected to the second guide cylinder 53 of the wire guide mechanism and movably passes through the guide post 51 of the wire guide mechanism.

[0037] The lithium battery pressing and welding device provided in this application forms a positioning area through four evenly distributed L-shaped positioning plates 62, which, together with the guide inclined surface 621, realizes the rapid positioning and limiting of the lithium battery 7, effectively avoids the horizontal displacement of the lithium battery 7 during the welding process, effectively ensures the accurate alignment of the nickel sheet and the polar post, improves the welding accuracy, and solves the misalignment problem caused by the lack of positioning in traditional devices.

[0038] In another embodiment of this utility model, the positioning plate 62 is L-shaped and is provided with an inlet ramp 621. The inlet ramp 621 facilitates the smooth passage of the lithium battery 7 through the side and limits the lithium battery 7.

[0039] In another embodiment of this utility model, a limiting frame 11 is provided at the bottom of the frame 1. Multiple limiting frames 11 are provided and all are fixedly connected to the frame 1. The limiting frames 11 are located below the positioning base plate 61. By providing multiple limiting frames 11, it is convenient to limit the lithium battery 7.

[0040] In another embodiment of this utility model, the driving mechanism 3 includes a driving cylinder 31, a driving plate 32, and a lifting plate 33. The driving cylinder 31 includes a driving cylinder body 311 and a piston rod 312. The driving cylinder body 311 is fixed to the frame 1. One end of the piston rod 312 is movably connected to the driving cylinder body 311, and the other end is fixedly connected to the driving plate 32. The driving plate 32 is fixedly connected to the piston rod 312 and the guide mechanism 5. The lifting plate 33 is fixed to the driving plate 32 and is provided with clearance holes 331. Multiple clearance holes 331 are provided and are evenly distributed on the lifting plate 33. Multiple welding heads 4 are provided and are evenly fixed to the bottom side of the driving plate 32. The number of welding heads 4 is the same as the number of clearance holes 331, and they are arranged to coincide with the clearance holes 331. When the driving cylinder 31 drives the driving plate 32 and the lifting plate 33 to descend, the clearance holes 331 pass through the lithium battery 7 one by one, further positioning the lithium battery 7. The drive plate 32 is fixedly connected to the first guide cylinder 52 of the wire guide mechanism and is movably inserted through the guide post 51 of the wire guide mechanism.

[0041] The drive cylinder 31 is the core power source. Its drive cylinder body 311 is fixed to the frame 1. When the device is started, the piston rod 312 extends and retracts, driving the drive plate 32 fixed thereto to move up and down. Since the drive plate 32 is fixed to the guide mechanism 5, the guide mechanism 5 restricts the drive plate 32 to move only in a preset direction (the direction of the axis of the guide column 51), so as to avoid the drive plate 32 from shaking and ensure its smooth lifting.

[0042] The lifting plate 33 is fixed to the drive plate 32 and rises and falls synchronously with the drive plate 32. The number and position of the clearance holes 331 on the lifting plate 33 are the same as those of the welding heads 4 on the bottom side of the drive plate 32. When the welding heads 4 descend with the drive plate 32, they can pass smoothly through the clearance holes 331 and avoid being blocked by the lifting plate 33. When the drive plate 32 drives the welding heads 4 to descend to the designated position, the welding heads 4 contact the nickel sheet of the polar post of the lithium battery 7 on the positioning mechanism 6 to complete the welding operation. After the welding is completed, the piston rod 312 retracts and drives the drive plate 32, the lifting plate 33 and the welding heads 4 to rise and reset synchronously, waiting for the next operation cycle. Specifically, the welding heads 4 can be OTC-D10 precision resistance welding heads.

[0043] In another embodiment of this utility model, the guiding mechanism 5 includes a guide post 51, a first guide cylinder 52, a second guide cylinder 53, and a buffer spring 54. The guide post 51 is fixedly connected to the frame 1. The first guide cylinder 52 and the second guide cylinder 53 are sequentially movably inserted through the guide post 51, with the first guide cylinder 52 positioned above the second guide cylinder 53. The buffer spring 54 is sleeved on the guide post 51, with one end of the buffer spring 54 fixedly connected to the bottom of the guide post 51 and the other end fixedly connected to the bottom of the second guide cylinder 53. Two guiding mechanisms 5 are provided, arranged parallel and symmetrically.

[0044] The guide column 51 is fixed to the frame 1 to form a rigid reference. The first guide cylinder 52 (connected to the drive plate 32) and the second guide cylinder 53 (connected to the positioning base plate 61) slide along the guide column 51, strictly limiting the movement trajectory of the drive plate 32 and the positioning base plate 61 to the vertical direction, avoiding horizontal deviation or rotational swaying when the two rise and fall, solving the problem of misalignment of the welding head 4 caused by unstable drive in traditional devices, and providing a motion reference for welding accuracy.

[0045] The buffer spring 54 is fitted under the guide post 51 and connected to the second guide cylinder 53 at the top. When the drive plate 32 continues to descend (the positioning base plate 61 is already limited), the second guide cylinder 53 squeezes the spring to compress it. The reaction force generated by the spring can offset part of the downward impact force: on the one hand, it avoids the welding head 4 from hitting the lithium battery 7 instantaneously and causing damage to the battery; on the other hand, it allows the welding head 4 to slowly adhere to the nickel sheet, ensuring that the welding surface is evenly stressed. When moving upward, the spring rebound can also assist the positioning base plate 61 in resetting, reducing the load on the drive mechanism 3.

[0046] The lithium battery pressing and welding device provided in this application forms a positioning area through four evenly distributed L-shaped positioning plates 62, which, together with the guide inclined surface 621, realizes the rapid positioning and limiting of the lithium battery 7, effectively avoids the horizontal displacement of the lithium battery 7 during the welding process, effectively ensures the accurate alignment of the nickel sheet and the polar post, improves the welding accuracy, and solves the misalignment problem caused by the lack of positioning in traditional devices.

[0047] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A lithium battery compression welding device, characterized by, The device includes a frame, a controller, a drive mechanism, a welding head, a guide mechanism, and a positioning mechanism. The controller is fixed to the frame, the drive mechanism is fixed to the frame and connected to the guide mechanism, the welding head is fixed to the drive mechanism and positioned above the positioning mechanism, the guide mechanism is fixed to the frame, and the positioning mechanism is connected to the guide mechanism. The positioning mechanism includes a positioning base plate and a positioning plate. The positioning base plate is fixed to the guiding mechanism and is provided with a positioning hole. The positioning plate is disposed in the positioning hole. One end of the positioning plate is fixed to the positioning base plate, and the other end extends downward out of the positioning hole. Four positioning plates are provided and are evenly fixed to the positioning base plate.

2. The lithium battery compression welding device of claim 1, wherein, The positioning plate is L-shaped and has an inlet ramp.

3. The lithium battery compression welding device of claim 1, wherein, The bottom of the frame is provided with a limiting frame, and there are multiple limiting frames, all of which are fixedly connected to the frame; the limiting frame is located below the positioning base plate.

4. The lithium battery compression welding device of claim 1, wherein, The driving mechanism includes a driving electric cylinder, a driving plate, and a lifting plate. The driving electric cylinder includes a driving cylinder body and a piston rod. The driving cylinder body is fixed to the frame. One end of the piston rod is movably connected to the driving cylinder body, and the other end is fixedly connected to the driving plate. The driving plate is fixedly connected to the piston rod and a guide mechanism. The lifting plate is fixed to the driving plate and is provided with clearance holes. Multiple clearance holes are provided and are evenly distributed on the lifting plate.

5. The lithium battery compression welding device of claim 4, wherein, Multiple welding heads are provided and are evenly fixed on the bottom side of the drive plate. The number of welding heads is the same as the number of clearance holes, and they are arranged to overlap with the clearance holes.

6. The lithium battery compression welding device of claim 1, wherein, The guiding mechanism includes a guide post, a first guide cylinder, a second guide cylinder, and a buffer spring. The guide post is fixedly connected to the frame. The first guide cylinder and the second guide cylinder are sequentially movably inserted through the guide post, with the first guide cylinder positioned above the second guide cylinder. The buffer spring is sleeved on the guide post, with one end of the buffer spring fixedly connected to the bottom of the guide post and the other end fixedly connected to the bottom of the second guide cylinder.

7. The lithium battery compression welding device of claim 1, wherein, There are two guide mechanisms, which are arranged in parallel and symmetrically.

Images