A capping assembly and a capping mechanism

Abstract

This application provides a pressure cap assembly and a pressure nail mechanism. The pressure cap assembly is used in the pre-welding process of the sealing nail of a battery. The pressure cap assembly includes a pressure plate, an elastic element, and a pressing element. The pressure plate has a first side and a second side arranged opposite to each other, and the pressure plate is provided with a through hole penetrating the first side and the second side. The pressure plate is used to abut against the battery located on the first side. The elastic element is disposed on the second side and connected to the pressure plate. The elastic element is located in the peripheral area of ​​the through hole. The pressing element is disposed on the second side and is configured to move relative to the pressure plate along the extension direction of the through hole. The pressing element includes a connecting part and a pressing part connected to the connecting part. The connecting part is also connected to the elastic element. The pressing part is disposed opposite to the through hole and is used to abut against the sealing nail. The elastic element is used to provide elastic cushioning for the pressing element so that the pressing part elastically presses against the sealing nail. Through the above method, the positioning and clamping effect of the seal can be effectively improved, thereby effectively improving the welding efficiency and welding success rate of the sealing nail.

Description

Technical Field

[0001] This application belongs to the field of battery processing technology, and more specifically, relates to a pressure cap assembly and a pressure nail mechanism. Background Technology

[0002] With the rapid development of new energy vehicles, China has placed higher demands on the battery processing and manufacturing sector. In the lithium-ion battery production process, after the electrolyte is added, the filling port needs to be sealed. The pre-welding process of the sealing pins significantly affects the success rate of the sealing pin welding. During the pre-welding process, the sealing pins are prone to misalignment with the overall battery structure. Therefore, existing production processes typically include a pin-pressing mechanism for the pre-welding process. This mechanism uses a pressing component to firmly hold the sealing pins onto the battery, and then simultaneously performs laser welding on the sealing pins.

[0003] Existing capping components have structural limitations, resulting in poor positioning and clamping effect on the sealing nails, which affects the welding efficiency and success rate of the sealing nails. Utility Model Content

[0004] This application provides a pressure cap assembly and a pressure nail mechanism to improve the positioning and clamping effect of the sealing nail of the battery, thereby improving the welding efficiency and welding success rate of the sealing nail.

[0005] The technical solution adopted in this application is as follows: This application provides a pressure cap assembly for the pre-welding process of the sealing nail of a battery. The pressure cap assembly includes a pressure plate, an elastic member, and a pressing member. The pressure plate has a first side and a second side disposed opposite to each other, and the pressure plate is provided with a through hole penetrating the first side and the second side. The pressure plate is used to abut against the battery located on the first side. The elastic member is disposed on the second side and connected to the pressure plate. The elastic member is located in the peripheral area of ​​the through hole. The pressing member is disposed on the second side and is configured to move relative to the pressure plate along the extension direction of the through hole. The pressing member includes a connecting part and a pressing part connected to the connecting part. The connecting part is also connected to the elastic member. The pressing part is disposed opposite to the through hole and is used to abut against the sealing nail. The elastic member is used to provide elastic cushioning for the pressing member so that the pressing part elastically presses against the sealing nail.

[0006] In some embodiments, the outer contour dimension of the connecting portion gradually decreases in the direction from the elastic member to the pressing portion.

[0007] In some embodiments, the connecting portion includes a first sub-connecting portion and a second sub-connecting portion. One end of the first sub-connecting portion is connected to an elastic member, and the other end of the first sub-connecting portion is connected to one end of the second sub-connecting portion. The other end of the second sub-connecting portion is connected to a pressing portion. The second sub-connecting portion is inclined toward the pressure plate relative to the first sub-connecting portion.

[0008] In some embodiments, the pressing assembly further includes a guide assembly located in the peripheral region of the through hole, and the connecting portion is connected to the guide assembly. The guide assembly is used to guide the pressing member to move along the extension direction.

[0009] In some embodiments, the guide assembly includes a linear bearing and a guide post. The linear bearing is sleeved on the guide post and connected to the pressure plate. The guide post is configured to move relative to the pressure plate in the extension direction. One end of the guide post is connected to the connecting part. An elastic element is sleeved on the guide post and located between the linear bearing and the connecting part. One end of the elastic element abuts against the end of the linear bearing, and the other end abuts against the connecting part.

[0010] In some embodiments, the connecting part, the guide assembly, and the elastic element are used as a transmission group, and the pressing assembly includes two transmission groups, which are symmetrically arranged on both sides of the pressing part.

[0011] In some embodiments, on the first side, the main surface of the pressure plate is provided with a stepped portion surrounding the through hole, the stepped portion protruding from the main surface away from the second side along the extending direction, the stepped portion being used to abut against the peripheral area of ​​the battery's sealing opening.

[0012] In some embodiments, the guide mechanism further includes a cover disposed on the second side and connected to the pressure plate. The connecting part, guide assembly, and elastic element are all disposed between the cover and the pressure plate. The cover is provided with a first channel extending in the extension direction. The first channel communicates with a through hole. The first channel is used as an injection channel for welding laser so that the welding laser can irradiate the welding area of ​​the sealing nail through the first channel and the through hole. The cover is also provided with a second channel communicating with the first channel. The second channel is used to connect to a dust collection device, which is used to remove welding dust through the second channel.

[0013] In some embodiments, the cover is further provided with a third channel, which communicates with the first channel. The third channel is used to connect to an air blowing device to guide the welding shielding gas blown by the air blowing device to the through hole.

[0014] In some embodiments, the cover and the pressure plate are detachably connected. The cover is provided with an installation space spaced apart from the first channel. The guide component and the elastic element are disposed in the installation space. The cover and / or the pressure plate are provided with a clearance space connecting the first channel and the installation space. The clearance space is located between the pressure plate and the cover. The pressing element is disposed in the clearance space.

[0015] In some embodiments, the connection end connecting the cover and the pressure plate is provided with a connection area, the connection area is sealed and fitted with the second side of the pressure plate, and the first channel, the installation space and the clearance space are located within the space enclosed by the connection area.

[0016] This application provides a nailing mechanism for the pre-welding process of sealing nails for batteries, including the pressing assembly described in any of the above embodiments. The nailing mechanism further includes: a positioning member for positioning and fixing the battery; and a driving mechanism, which is connected to the positioning member and / or the pressing plate for driving the positioning member and / or the pressing plate to move along the extension direction so that the battery abuts against the pressing plate and the pressing part abuts against the sealing nail.

[0017] The beneficial effects of this application are as follows: This application provides a pressure cap assembly for the pre-welding process of a battery sealing pin. The pressure cap assembly includes a pressure plate, an elastic member, and a pressing member. The pressure plate has a first side and a second side disposed opposite to each other, and the pressure plate is provided with a through hole penetrating the first side and the second side. The pressure plate is used to abut against the battery located on the first side. The elastic member is disposed on the second side and connected to the pressure plate. The elastic member is located in the peripheral area of ​​the through hole. The pressing member is disposed on the second side and is configured to move relative to the pressure plate along the extension direction of the through hole. The pressing member includes a connecting part and a pressing part connected to the connecting part. The connecting part is also connected to the elastic member. The pressing part is disposed opposite to the through hole and is used to abut against the sealing pin. The elastic member is used to provide elastic cushioning for the pressing member so that the pressing part elastically presses against the sealing pin. The pressing component is connected to the elastic component, which provides elastic cushioning for the pressing component, so that the pressing component and the sealing nail are elastically pressed together, thereby reducing the risk of the sealing nail being displaced, tilted upwards or crushed, thus effectively improving the positioning and pressing effect of the seal, and thus effectively improving the welding efficiency and welding success rate of the sealing nail. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, 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 application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a three-dimensional structural diagram of the pressure cap assembly according to an embodiment of this application;

[0020] Figure 2 for Figure 1 A schematic diagram of the exploded structure of the pressure-compression assembly shown;

[0021] Figure 3 for Figure 2 The diagram shows a cross-section AA of the capping assembly.

[0022] Figure 4 for Figure 2 A three-dimensional structural schematic diagram of the pressing component is shown;

[0023] Figure 5 for Figure 2The diagram shows a three-dimensional structural schematic of the enclosure.

[0024] Figure 6 for Figure 5 The diagram shows the cross-section of the cover BB.

[0025] The following are the labeling elements in the figure:

[0026] 10. Coping assembly; x1, extension direction; LB1, first side; LB2, second side;

[0027] 100. Pressure plate; 200. Cover body; 300. Pressing component; 400. Elastic component; 500. Guide assembly;

[0028] 110. Through hole; 120. Stepped section; 210. First channel; 220. Second channel; 230. Third channel; 240. Installation space; 250. Clearance space; 310. Connecting part; 320. Pressing part; 510. Linear bearing; 520. Guide post;

[0029] 311. First sub-connecting part; 312. Second sub-connecting part. Detailed Implementation

[0030] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0031] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0032] 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 accompanying drawings. They are only for the convenience of describing this application 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 application.

[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 technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0034] Please see Figure 1 and Figure 2 The pressing assembly 10 and pressing nail mechanism provided in this application embodiment will now be described. The pressing assembly 10 and pressing nail mechanism (not shown) are used in the pre-welding process of the battery sealing nail. Specifically, in the battery sealing process, the welding of the sealing nail requires two processes: pre-welding (i.e., the pre-welding process) and full welding (i.e., the full welding process). During the pre-welding process, the welding equipment requires the cooperation of the pressing assembly 10 to stably press the sealing nail onto the battery's filling port, so that the sealing nail can be pre-welded onto the battery. The pressing assembly 10 provided in this application will be described in detail below using a specific application example in the pre-welding process.

[0035] Please continue reading. Figure 1 and Figure 2 And further reading Figure 3 The top pressing assembly 10 includes: a pressure plate 100, an elastic element 400, and a pressing element 300. The pressure plate 100 has a first side LB1 and a second side LB2 arranged opposite to each other. The pressure plate 100 is provided with a through hole 110 passing through the first side LB1 and the second side LB2. The pressure plate 100 is used to abut against the battery located on the first side LB1. An elastic member 400 is provided on the second side LB2 and connected to the pressure plate 100. The elastic member 400 is located in the peripheral area of ​​the through hole 110. A pressing member 300 is provided on the second side LB2. The pressing member 300 is configured to move relative to the pressure plate 100 along the extension direction x1 of the through hole 110. The pressing member 300 includes a connecting part 310 and a pressing part 320 connected to the connecting part 310. The connecting part 310 is also connected to the elastic member 400. The pressing part 320 is arranged opposite to the through hole 110 and is used to abut against the sealing nail through the through hole 110. The elastic member 400 is used to provide elastic cushioning for the pressing member 300 so that the pressing part 320 elastically presses against the sealing nail.

[0036] Specifically, in this paper, the direction in which the battery and the pressure plate 100 approach each other is defined as the pressing direction, which is parallel to the extension direction x1 of the through hole 110. A pressing member 300 is disposed on the second side LB2 of the pressure plate 100. The pressing member 300 is connected to the pressure plate 100 via an elastic member 400, allowing the pressing member 300 to move relative to the pressure plate 100 within a certain spatial distance along the extension direction x1. As the battery approaches the pressure plate 100 or the pressure plate 100 approaches the battery, the sealing pin disposed at the injection port abuts against the pressing part 320. Under the transmission of the connecting part 310, the elastic member 400 provides elastic buffering for the pressing part 320, enabling elastic pressing between the pressing part 320 and the sealing pin. As the battery and pressure plate 100 move closer together, the pressing part 320 is pushed back relative to the pressure plate 100 by the sealing pin. After the end of the battery abuts against the pressure plate 100, the battery and pressure plate 100 are no longer close to each other, so that the sealing pin and the pressing part 320 remain relatively fixed. At this time, the pressing part 320 provides a clamping force to the sealing pin under the action of the elastic member 400, so that the sealing pin can be stably pressed and held at the sealing opening. After the sealing pin is clamped and held, the welding laser emitted by the welding equipment can irradiate the connection between the sealing pin and the battery through the through hole 110, thereby realizing the pre-welding of the sealing pin.

[0037] If the pressing member 300 and the sealing nail are rigidly pressed together (i.e., without cushioning) during the pressing process of the sealing nail, overpressure can easily occur (i.e., the interaction force between the sealing nail and the pressing member 300 is too large, causing the sealing nail to be bounced away or damaged). This affects the positioning and pressing effect of the sealing nail. For example, it may cause the sealing nail to shift or tilt upwards, or even damage the sealing nail by the pressing member 300. This would prevent the welding equipment from welding the sealing nail and the battery, or require readjustment before welding, thus affecting the welding efficiency and success rate of the sealing nail. Therefore, in this embodiment, the pressing member 300 is connected to the elastic member 400. The elastic member 400 provides elastic cushioning for the pressing member 300, so that the pressing member 300 and the sealing nail achieve elastic pressing, reducing the risk of the sealing nail shifting, tilting, or being damaged. This effectively improves the positioning and pressing effect of the seal, thereby effectively improving the welding efficiency and success rate of the sealing nail.

[0038] The pressure plate 100 serves a limiting function. After the pressure plate 100 abuts against the end of the battery cell, it restricts further relative movement between the battery cell and the pressure plate 100, effectively reducing the probability of damage to the battery, sealing pin, and pressing member 300 due to overpressure. Furthermore, the pressure plate 100 allows for better control of the pressing force exerted by the pressing member 300 on the sealing pin, thus effectively reducing the difficulty of clamping and positioning the sealing pin. For example, the pressing force of the pressing member 300 on the sealing pin can be adjusted by adjusting the initial relative position between the pressing member 300 and the pressure plate 100.

[0039] Furthermore, the through hole 110 not only provides space for the pressing part 320 and the elastic element 400 of the sealing nail, but also provides space for the welding laser of the laser welding equipment. The welding laser of the welding equipment can irradiate the connection between the battery and the sealing nail through the through hole 110. As a component that provides elastic force, the elastic element 400 is usually large in size. Therefore, it is necessary to reasonably arrange the relative positional relationship between the elastic element 400 and the through hole 110 to reduce the interference of the elastic element 400 on the optical path of the welding laser. In the embodiment of this application, the pressing part 320 is connected to the elastic element 400 through the connecting part 310, so that the elastic element 400 can be arranged on the outer periphery of the through hole 110, thereby preventing the elastic element 400 from blocking the optical path of the welding laser, thus effectively reducing the welding difficulty of the sealing nail and effectively improving the welding efficiency of the sealing nail.

[0040] Please see Figure 4 In the direction from the elastic member 400 to the pressing part 320, the outer contour dimension of the connecting part 310 gradually decreases. This arrangement can effectively reduce the interference of the connecting part 310 near the pressing part 320 on the optical path of the welding laser while ensuring the structural strength of the connecting part 310.

[0041] Please see Figure 3 and Figure 4 The connecting portion 310 described in the above embodiment includes a first sub-connecting portion 311 and a second sub-connecting portion 312. One end of the first sub-connecting portion 311 is connected to the elastic member 400 and the guide assembly 500, and the other end of the first sub-connecting portion 311 is connected to one end of the second sub-connecting portion 312. The other end of the second sub-connecting portion 312 is connected to the pressing portion 320. The second sub-connecting portion 312 is inclined relative to the first sub-connecting portion 311 toward the pressure plate 100. Specifically, in order for the pressing portion 320 to bring the pressure plate 100 and the battery closer together and abut against the sealing nail, when the pressing portion 320 and the pressure plate 100 are in the initial relative position relationship, the pressing portion 320 needs to pass through the through hole 110 and be at least partially located on the first side LB1. Therefore, the second sub-connecting part 312 is set to be inclined relative to the first sub-connecting part 311 toward the pressure plate 100, so that the pressing part 320 is closer to the first side LB1 of the pressure plate 100, ensuring that the pressing part 320 can abut against the sealing nail. Furthermore, this setting does not require excessively increasing the length of the pressing part 320 in the extension direction x1, thereby ensuring the structural strength of the pressing part 320.

[0042] Please continue reading. Figure 2 and Figure 3The pressing assembly 10 described in the above embodiment also includes a guide assembly 500. The guide assembly 500 is located in the peripheral area of ​​the through hole 110. The connecting part 310 is connected to the guide assembly 500. The guide assembly 500 is used to guide the pressing member 300 to move along the extension direction x1.

[0043] Specifically, the guide assembly 500 is a component that guides along the extension direction x1. The pressing member 300 is connected to the guide assembly 500. Thus, as the pressing member 300 is pushed backward relative to the pressure plate 100 by the sealing nail, the guide assembly 500 provides guidance for the pressing member 300, allowing it to move stably relative to the pressure plate 100 along the extension direction x1. This effectively reduces the probability of the pressing member 300 jamming or deviating from its movement, thereby effectively improving the positioning and clamping effect of the pressure nail assembly on the sealing nail. Furthermore, the guide assembly 500 is located on the outer periphery of the through hole 110, which effectively prevents the guide assembly 500 from blocking the welding laser's optical path, thereby effectively reducing the welding difficulty.

[0044] Please continue reading. Figure 2 and Figure 3 The guide assembly 500 described in the above embodiments includes a linear bearing 510 and a guide post 520. The linear bearing 510 is sleeved on the guide post 520 and connected to the pressure plate 100. The guide post 520 is configured to move relative to the pressure plate 100 along the extension direction x1. One end of the guide post 520 is connected to the connecting part 310. An elastic member 400 is sleeved on the guide post 520 and located between the linear bearing 510 and the connecting part 310. One end of the elastic member 400 abuts against the end of the linear bearing 510, and the other end abuts against the connecting part 310. Thus, under the guidance of the linear bearing 510, the guide post 520 can drive the pressing member 300 to move stably relative to the pressure plate 100 along the extension direction x1. Of course, in other embodiments, the guide assembly 500 can also be other types of guide components, such as a slider-rail mechanism, etc., which will not be described in detail here. The elastic element 400 is fitted onto the guide post 520, which improves the structural tightness between the guide assembly 500 and the elastic element 400.

[0045] In this embodiment, the connecting portion 310, the guiding component 500, and the elastic element 400 described in the above embodiments form a transmission group. The pressing assembly 10 includes two transmission groups, which are symmetrically arranged on both sides of the pressing portion 320. In other words, the pressing member 300 includes two connecting portions 310 symmetrically arranged on both sides of the pressing portion 320. The two connecting portions 310 are respectively connected to the corresponding elastic element 400 and guiding component 500. This can further improve the movement stability of the pressing member 300 along the extension direction x1, so as to effectively improve the positioning and pressing effect of the pressing assembly 10 on the sealing nail.

[0046] Please continue reading. Figure 3 On the first side LB1, the main surface of the pressure plate 100 is provided with a stepped portion 120 surrounding the through hole 110. The stepped portion 120 protrudes from the main surface away from the second side LB2 along the extension direction x1 of the through hole 110. The stepped portion 120 is used to abut against the peripheral area of ​​the battery's sealing opening. Specifically, when the pressure plate 100 abuts against the battery, the stepped portion 120 abuts against the peripheral area of ​​the battery's sealing opening, thereby isolating the battery's sealing opening from the space where the battery is located. In this way, the dust generated during the welding process (e.g., exhaust gas generated during welding, component residues falling off during welding, etc.) will be blocked by the pressure plate 100 on the side of the pressure plate 100 away from the battery (i.e., the second side LB2), thereby effectively reducing the probability of the battery being contaminated or damaged by dust splashes during the welding process.

[0047] Please continue reading. Figure 2 and Figure 3 And further reading Figure 5 and Figure 6 The guiding mechanism described in the above embodiment also includes a cover 200, which is disposed on the second side LB2 and connected to the pressure plate 100. The connecting part 310, the guiding component 500 and the elastic element 400 are all disposed between the cover 200 and the pressure plate 100. The cover 200 is provided with a first channel 210 extending along the extension direction x1. The first channel 210 communicates with the through hole 110. The first channel 210 is used as an injection channel for the welding laser so that the welding laser can irradiate the welding part of the sealing nail through the first channel 210 and the through hole 110. The cover 200 is also provided with a second channel 220, which communicates with the first channel 210. The second channel 220 is used to connect to a dust collection device (not shown in the figure). The dust collection device is used to remove welding dust through the second channel 220.

[0048] Specifically, after the cover 200 is connected to the pressure plate 100, the first channel 210 communicates with the through hole 110, and the dust generated during the welding process is isolated inside the cover 200, thereby further reducing the probability of the battery being contaminated or damaged by dust splashes during the welding process. Furthermore, the cover 200 is also equipped with a second channel 220 communicating with the first channel 210. This second channel 220 allows for the connection of an external dust extraction device, enabling timely removal of dust during the welding process, thus effectively reducing the impact of dust on the welding process.

[0049] In this embodiment of the application, the first channel 210 and the through hole 110 are coaxially arranged to ensure that the welding laser can smoothly irradiate the area to be welded on the sealing nail.

[0050] The cover 200 described in the above embodiment is also provided with a third channel 230, which is connected to the first channel 210. The third channel 230 is used to connect to an air blowing device (not shown) to guide the welding shielding gas blown by the air blowing device to the through hole 110.

[0051] Specifically, the second channel 220 and the third channel 230 are both inclined relative to the first channel 210 and are respectively located on both sides of the first channel 210. The third channel 230 can be used to connect to an air blowing device, and the third channel 230 is configured to guide the welding protective gas blown out by the air blowing device to the through hole 110 to ensure the welding of the sealing nail.

[0052] Please see Figure 3 The cover 200 described in the above embodiments and the pressure plate 100 described in the above embodiments are detachably connected. The cover 200 is provided with an installation space 240 spaced apart from the first channel 210. The guide component 500 is disposed in the installation space 240 and connected to the installation control. The elastic member 400 is connected to the guide component 500. The cover 200 and / or the pressure plate 100 are provided with a clearance space 250 connecting the first channel 210 and the installation space 240. The clearance space 250 is located between the pressure plate 100 and the cover 200. The pressing member 300 is disposed in the clearance space 250.

[0053] Specifically, the installation space 240 is a space with two openings. One opening of the installation space 240 is located at the end where the cover 200 connects to the pressure plate 100, and the other opening is located at the end of the cover 200 away from the pressure plate 100. Taking the guide assembly 500 in the above embodiment, which includes a linear bearing 510 and a guide post 520, as an example, the linear bearing 510 is inserted into the installation space 240 through the opening at the end where the cover 200 connects to the pressure plate 100, and is connected and fixed to the cover 200. For example, components such as through holes 110, pins, or screws restrict the linear bearing 510 from moving relative to the cover 200 in the extension direction x1. After the linear bearing 510 is fixed, the guide post 520, which is fitted with an elastic element 400, is inserted into the linear bearing 510 through the opening at the end where the cover 200 connects to the pressure plate 100. After the linear bearing 510 and the guide post 520 are properly engaged, a limiting member can be installed on the guide post 520 through the opening on the side of the mounting space 240 away from the pressure plate 100. The limiting member is used to prevent the guide post 520 from falling out of the linear bearing 510 along the extension direction x1. After the guide assembly 500 and the elastic member 400 are installed, the pressing member 300 is then connected and fixed to the guide post 520.

[0054] The guide assembly 500 and the elastic element 400 are disposed within the installation space 240. The pressing element 300 is connected to the guide assembly 500 and the elastic element 400, thus making the cover 200, the guide assembly 500, the elastic element 400, and the pressing element 300 a single connected unit. During assembly, the guide assembly 500, the elastic element 400, and the pressing element 300 can be pre-installed on the cover 200, and then the pressure plate 100 can be connected to the cover 200. This allows the guide assembly 500, the elastic element 400, and the pressing element 300 to be installed on the pressure plate 100 and maintain a connection with the pressure plate 100. Based on this, when the pressure plate 100 needs to be replaced or repaired, it can be replaced simply by separating the pressure plate 100 from the cover 200, without disassembling the guide assembly 500, the elastic element 400, and the pressing element 300, thereby effectively improving the replacement efficiency of the pressure plate 100.

[0055] The connection end connecting the cover 200 and the pressure plate 100 is provided with a connection area (not shown in the figure). The connection area is sealed and fitted with the second side LB2 of the pressure plate 100. The first channel 210, the installation space 240 and the clearance space 250 are located within the space enclosed by the connection area. Based on this, the first channel 210, the installation space 240 and the clearance space 250 are all located in the area where the cover 200 and the pressure plate 100 are sealed and connected. This effectively prevents dust from leaking out along the area between the cover 200 and the pressure plate 100, while also effectively improving the dust extraction efficiency of the dust collection device through the second channel 220.

[0056] This application also provides a pressure nailing mechanism for the pre-welding process of sealing nails for batteries, including the pressure top assembly 10 described in any of the above embodiments. The pressure nailing mechanism further includes: a positioning member (not shown) and a driving mechanism (not shown). The positioning member is used to position and fix the battery. The driving mechanism is connected to the positioning member and / or the pressure plate 100 for driving the positioning member and / or the pressure plate 100 to move along the extension direction x1, so that the battery abuts against the pressure plate 100 and the pressure abutting part 320 abuts against the sealing nail.

[0057] The driving mechanism can be driven to connect with the positioning element, or the driving mechanism can also be driven to connect with the pressing assembly 10, or the driving mechanism can be driven to connect with both the positioning element and the pressing assembly 10 respectively. Under the drive of the driving element, the pressing assembly 10 and the positioning element carrying the battery move closer to each other, thereby achieving the positioning and pressing of the sealing nail.

[0058] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A coping assembly, comprising: The pre-welding process for sealing pins used in the battery, wherein the capping assembly includes: A pressure plate has a first side and a second side arranged opposite to each other, and the pressure plate is provided with a through hole penetrating the first side and the second side. The pressure plate is used to abut against the battery located on the first side. An elastic element, disposed on the second side and connected to the pressure plate, is located in the peripheral region of the through hole; and, A pressing member is disposed on the second side. The pressing member is configured to move relative to the pressure plate along the extension direction of the through hole. The pressing member includes a connecting part and a pressing part connected to the connecting part. The connecting part is also connected to the elastic member. The pressing part is disposed opposite to the through hole and is used to abut against the sealing nail. The elastic member is used to provide elastic cushioning for the pressing member so that the pressing part elastically presses against the sealing nail.

2. The coping assembly of claim 1, wherein, In the direction from the elastic member to the pressing part, the outer contour dimension of the connecting part gradually decreases.

3. The coping assembly of claim 2, wherein, The connecting part includes a first sub-connecting part and a second sub-connecting part. One end of the first sub-connecting part is connected to the elastic member, and the other end of the first sub-connecting part is connected to one end of the second sub-connecting part. The other end of the second sub-connecting part is connected to the pressing part. The second sub-connecting part is inclined toward the pressure plate relative to the first sub-connecting part.

4. The coping assembly of claim 1, wherein, The pressing assembly further includes a guide assembly located in the peripheral region of the through hole. The connecting portion is connected to the guide assembly, and the guide assembly is used to guide the pressing member to move along the extension direction.

5. The coping assembly of claim 4, wherein, The guiding assembly includes a linear bearing and a guide post. The linear bearing is sleeved on the guide post and connected to the pressure plate. The guide post is configured to move relative to the pressure plate along the extension direction. One end of the guide post is connected to the connecting part. The elastic element is sleeved on the guide post and located between the linear bearing and the connecting part. One end of the elastic element abuts against the end of the linear bearing, and the other end abuts against the connecting part.

6. The coping assembly of claim 4, wherein, The connecting part, the guiding component, and the elastic element form a transmission group. The pressing assembly includes two transmission groups, which are symmetrically arranged on both sides of the pressing part.

7. The coping assembly of claim 4, wherein, On the first side, the main surface of the pressure plate is provided with a stepped portion surrounding the through hole. The stepped portion protrudes from the main surface away from the second side along the extending direction. The stepped portion is used to abut against the peripheral area of ​​the sealing port of the battery.

8. The coping assembly of claim 7, wherein, The guide assembly further includes a cover disposed on the second side and connected to the pressure plate. The connecting part, the guide assembly, and the elastic element are all disposed between the cover and the pressure plate. The cover is provided with a first channel extending along the extension direction. The first channel communicates with the through hole. The first channel is used as an injection channel for welding laser, so that the welding laser can irradiate the welding area of ​​the sealing nail through the first channel and the through hole. The cover is also provided with a second channel, which communicates with the first channel. The second channel is used to connect to a dust collection device, which is used to remove welding dust through the second channel.

9. The coping assembly of claim 8, wherein, The cover is also provided with a third channel, which communicates with the first channel. The third channel is used to connect to an air blowing device to guide the welding shielding gas blown by the air blowing device to the through hole.

10. The coping assembly of claim 8, wherein, The cover and the pressure plate are detachably connected. The cover is provided with an installation space spaced apart from the first channel. The guide component and the elastic element are disposed in the installation space. The cover and / or the pressure plate are provided with a clearance space connecting the first channel and the installation space. The clearance space is located between the pressure plate and the cover. The pressing element is disposed in the clearance space.

11. The coping assembly of claim 10, wherein, The connection end of the cover and the pressure plate is provided with a connection area. The connection area is sealed and fitted to the second side of the pressure plate, and the first channel, the installation space and the clearance space are located within the space enclosed by the connection area.

12. A nail press mechanism characterized by, The pre-welding process for sealing pins for batteries includes the capping assembly as described in any one of claims 1-11, wherein the capping mechanism further includes: Positioning element, used to position and fix the battery; A drive mechanism, which is connected to the positioning member and / or pressure plate, is used to drive the positioning member and / or pressure plate to move along the extension direction so that the battery abuts against the pressure plate and the pressing part abuts against the sealing nail.

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