Busbar welding assembly and busbar welding tool

Abstract

The utility model discloses a busbar welding assembly and a busbar welding tool, and relates to the technical field of tools. The busbar welding assembly comprises a fixing block, an air exhaust channel and a welding nozzle, a through hole is formed in the fixing block, the interior of the welding nozzle is hollow, the welding nozzle is arranged in the through hole and connected with the through hole in a sealed mode, the first end of the welding nozzle is located in the through hole, and the second end of the welding nozzle is located outside the through hole. A light-transmitting piece is arranged at the end, away from the welding nozzle, of the through hole and connected with the through hole in a sealed mode. The second end of the welding nozzle is used for abutting against a to-be-welded part and is in sealed connection with the to-be-welded part, the inner space, located between the to-be-welded part and the light-transmitting piece, of the welding nozzle and the through hole is a welding space, the air exhaust channel communicates with the welding space, and air pressure in the welding space is exhausted to preset air pressure through the air exhaust channel.

Description

Technical Field

[0001] This application relates to the field of tooling technology, specifically to a busbar welding assembly and busbar welding tooling. Background Technology

[0002] As battery capacity increases, the overcurrent capability needs to be improved. The area of ​​the welding trajectory is linked to the overcurrent capability. However, using welding fixtures in related technologies to increase the welding trajectory area may increase the heat input of the laser and the amount of welding spatter, which will bring more safety hazards to the product. Utility Model Content

[0003] This application provides a bus welding assembly and a bus welding fixture, which can reduce slag spatter and weld porosity during welding by lowering the gas pressure in the welding space, while significantly increasing the penetration depth. It can achieve the required penetration depth with lower laser power, thereby significantly reducing the heat input generated during laser welding.

[0004] In a first aspect, this application provides a busbar welding assembly, including a fixing block, an air extraction channel, and a welding nozzle. The fixing block has a through hole, and the welding nozzle is hollow inside, disposed within and sealed to the through hole. A first end of the welding nozzle is located inside the through hole, and a second end is located outside the through hole. A light-transmitting plate is disposed at the end of the through hole furthest from the welding nozzle, and the light-transmitting plate is sealed to the through hole. The second end of the welding nozzle is used to abut against the workpiece to be welded and is sealed to the workpiece. The internal space between the welding nozzle and the through hole, located between the workpiece to be welded and the light-transmitting plate, constitutes a welding space. The air extraction channel communicates with the welding space, and the air pressure in the welding space is extracted to a preset pressure through the air extraction channel.

[0005] In one possible design of the first aspect, the fixing block is provided with a heat dissipation channel, which is connected to the through hole.

[0006] In one possible design of the first aspect, the fixing block includes a first pressing block and a second pressing block. The first pressing block has a first hole, and the second pressing block has a second hole, forming a through hole. The first pressing block and the second pressing block can slide relative to each other along the axial direction of the through hole. The welding nozzle passes through the second hole, and the first end of the welding nozzle is disposed in the first hole.

[0007] In one possible design of the first aspect, a heat dissipation channel is provided on the second pressure block, and the heat dissipation channel is connected to the second hole.

[0008] In one possible design of the first aspect, the first pressure block and the second pressure block are connected by a slide rod, and the two ends of the slide rod are respectively provided with limiting ears to restrict the first pressure block and the second pressure block from sliding out of the slide rod.

[0009] In one possible design of the first aspect, a spring is fitted onto the slide bar, with one end of the spring abutting against the first pressure block and the other end of the spring abutting against a limiting lug near the first pressure block.

[0010] In one possible design of the first aspect, a first countersunk hole is provided on the first pressure block, the spring is located in the first countersunk hole, and the slide rod passes through the first countersunk hole.

[0011] In one possible design of the first aspect, the second pressing block includes a first sub-pressing block and a second sub-pressing block, the first sub-pressing block being disposed between the second sub-pressing block and the first pressing block, and the first sub-pressing block and the second sub-pressing block being detachably connected.

[0012] In one possible design of the first aspect, an annular clamping plate is also included, with a boss provided on the through hole, the annular clamping plate being connected to the boss, and the light-transmitting sheet being located between the annular clamping plate and the boss.

[0013] In one possible design of the first aspect, a sealing gasket is provided at the second end of the welding nozzle, the sealing gasket being used to achieve a seal between the welding nozzle and the workpiece to be welded.

[0014] Secondly, this application provides a bus welding fixture, including a mounting plate and two bus welding assemblies of the first aspect and any possible design thereof, the two bus welding assemblies being fixedly connected to the mounting plate.

[0015] In one possible design of the second aspect, a base and a mounting bracket are also included. The mounting bracket includes a first sliding rail, a second sliding rail, and a third sliding rail. The first sliding rail is fixedly connected to the base, the second sliding rail is slidably connected to the first sliding rail, the third sliding rail is slidably connected to the second sliding rail, and the mounting plate is slidably connected to the third sliding rail.

[0016] In one possible design of the second aspect, the directions in which the second sliding rail slides on the first sliding rail, the directions in which the third sliding rail slides on the second sliding rail, and the directions in which the mounting plate slides on the third sliding rail are perpendicular to each other.

[0017] Understandably, the beneficial effects that the battery system described in the second aspect above can achieve can be referenced to the beneficial effects of the first aspect and any of its possible design embodiments, which will not be repeated here.

[0018] The beneficial effects of this application are:

[0019] This application, by setting up a sealed welding space and reducing the gas pressure within the welding space, can reduce slag spatter and weld porosity during welding, while significantly increasing the penetration depth. It can achieve the required penetration depth with lower laser power, thereby greatly reducing the heat input generated during laser welding. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying 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.

[0021] Figure 1 A schematic diagram of a busbar welding fixture provided in an embodiment of this application;

[0022] Figure 2 A schematic diagram of a busbar welding assembly provided in an embodiment of this application;

[0023] Figure 3 A schematic diagram of a busbar welding assembly mounted on a mounting plate is provided as an embodiment of this application;

[0024] Figure 4 This application provides a schematic diagram of the bottom surface of a busbar welding assembly and a cross-sectional view of the bottom surface along the AA direction;

[0025] Figure 5 for Figure 3 The diagram shows the bottom surface of the structure and its cross-sectional view along the BB and CC directions.

[0026] In the diagram: 110-fixed block; 120-exhaust channel; 130-welding nozzle; 140-transmitting sheet; 150-welding space; 160-slide rod; 170-spring; 180-annular clamping plate; 190-sealing gasket;

[0027] 200 - Mounting plate; 210 - Base; 220 - Mounting bracket; 230 - First sliding rail; 240 - Second sliding rail; 250 - Third sliding rail; 260 - Part to be welded;

[0028] 111-Through hole; 112-Heat dissipation channel; 113-First pressure block; 114-Second pressure block; 115-First sub-pressure block; 116-Second sub-pressure block;

[0029] 1111 - Boss; 1131 - First hole; 1132 - First countersunk hole; 1141 - Second hole; 1142 - Second countersunk hole; 161 - Restricting lug. Detailed Implementation

[0030] The technical solutions in this application will now be described with reference to the accompanying drawings.

[0031] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0032] In the embodiments of this application, 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 with "first" and "second" may explicitly or implicitly include one or more of that feature.

[0033] It should be understood that the terminology used in the description of the various examples herein is for the purpose of describing the particular examples only and is not intended to be restrictive. As used in the description of the various examples, the singular forms “a” and “the” are intended to include the plural forms as well, unless the context explicitly indicates otherwise.

[0034] In this application, "at least one" means one, two, or more, and "more than" means two or more. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or multiple items. For example, at least one of a, b, or c can mean: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple.

[0035] It should also be understood that, in this application, unless otherwise expressly specified and limited, the term "connection" should be interpreted broadly. For example, "connection" can be a fixed connection, a sliding connection, a detachable connection, or an integral part; it can be a direct connection or an indirect connection through an intermediate medium.

[0036] It should also be understood that the term “comprising” (also referred to as “includes”, “including”, “comprises” and / or “comprising”) as used in this specification specifies the presence of the stated features, integers, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0037] It should be understood that the terms "an embodiment," "another embodiment," and "a possible design" used throughout the specification mean that a specific feature, structure, or characteristic related to an embodiment or implementation is included in at least one embodiment of this application. Therefore, phrases such as "in one embodiment of this application," "in another embodiment of this application," and "a possible design" appearing throughout the specification do not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0038] It should also be understood that the specific values ​​mentioned in the embodiments of this application are not intended to limit the specific dimensions of particular features or structures. The relevant values ​​may be illustrative examples for ease of understanding, or they may represent the theoretically optimal value for a certain feature. In practice, the relevant dimensions may be a range of values, such as ±10% or ±20% of the optimal theoretical value, depending on whether the corresponding technical effect can be achieved.

[0039] refer to Figures 1 to 5 , Figure 1 This is a schematic diagram of a busbar welding fixture provided in an embodiment of this application. The busbar welding fixture is provided with two busbar welding components. Figure 2 This is a schematic diagram of a busbar welding assembly provided in an embodiment of this application. Figure 3 This is a schematic diagram of a busbar welding assembly mounted on a mounting plate, provided as an embodiment of this application. Figure 4 This application provides a schematic diagram of the bottom surface of a busbar welding assembly and a cross-sectional view of the bottom surface along the AA direction. Figure 5 for Figure 3 The diagram shows the bottom surface of the structure and its cross-sectional view along the BB and CC directions.

[0040] like Figures 1 to 5 As shown, the busbar welding assembly in this embodiment includes a fixing block 110, an air extraction channel 120, and a welding nozzle 130. The fixing block 110 is provided with a through hole 111. The welding nozzle 130 is hollow inside and is disposed in the through hole 111 and sealed to the through hole 111. The first end of the welding nozzle 130 is located inside the through hole 111, and the second end of the welding nozzle 130 is located outside the through hole 111.

[0041] A light-transmitting plate 140 is provided at the end of the through hole 111 away from the welding nozzle 130, and the light-transmitting plate 140 is sealed to the through hole 111. The second end of the welding nozzle 130 is used to abut against the workpiece 260 to be welded and is sealed to the workpiece 260. The internal space between the welding nozzle 130 and the through hole 111, located between the workpiece 260 to be welded and the light-transmitting plate 140, is the welding space 150. The air extraction channel 120 is connected to the welding space 150, and the air pressure in the welding space 150 can be extracted to a preset air pressure through the air extraction channel 120. The air extraction channel 120 can be equipped with an air extraction device for extracting air. The air extraction channel 120 can also be connected to a barometer, which is used to detect whether the air pressure in the welding space 150 has been extracted to the preset air pressure.

[0042] In the embodiments of this application, such as Figure 5 As shown, the welding nozzle 130 and the through hole 111 are located in the internal space between the workpiece 260 to be welded 140 and the light-transmitting sheet 140, which is the welding space 150. Since a portion of the welding nozzle 130 is disposed within the through hole 111, and there is a certain distance between the light-transmitting sheet 140 and the welding nozzle 130, the welding space 150 in this application includes the entire internal space within the welding nozzle 130 and a portion of the space within the through hole 111. Specifically, the portion of the space within the through hole 111 refers to the internal space of the through hole 111 between the welding nozzle 130 and the light-transmitting sheet 140.

[0043] The through hole 111 on the fixing block 110 is provided to facilitate the installation of the welding nozzle 130 and to allow the laser generated by the laser welding device to pass through the fixing block 110. The hollow interior of the welding nozzle 130 also facilitates the passage of the laser generated by the laser welding device. It should be noted that when the second end of the welding nozzle 130 abuts against the workpiece 260 to be welded, the aforementioned welding space 150 is a sealed space. The preset air pressure refers to an air pressure lower than standard atmospheric pressure; that is, the air pressure in the welding space 150 is drawn to a negative pressure state by an air extraction device so that the workpiece 260 to be welded can be welded in a negative pressure environment, improving the welding effect. It should be noted that the workpiece 260 to be welded in this embodiment mainly refers to the busbar, and is mainly used to weld the busbar to the positive and negative tabs on the battery pack.

[0044] This embodiment of the application sets up a sealed welding space 150 and reduces the gas pressure inside the welding space 150. By reducing the gas pressure inside the welding space 150, the slag spatter and weld porosity generated during welding can be reduced, while the penetration depth can be greatly increased. The required penetration depth can be achieved with a lower laser power, thereby greatly reducing the heat input generated during laser welding.

[0045] In one embodiment of this application, as Figure 3 , Figure 4As shown, a heat dissipation channel 112 is provided on the fixing block 110, and the heat dissipation channel 112 is connected to the through hole 111. When welding is required on the workpiece, the laser emitted by the laser welding device passes through the light-transmitting plate 140 and irradiates the workpiece from the internal space of the through hole 111 and the welding nozzle 130, welding the parts of the workpiece that need to be welded. Since a large amount of heat is generated during welding, this heat is mainly concentrated in the welding nozzle 130, which will cause the temperature of the welding nozzle 130 to rise. In order to avoid the temperature of the welding nozzle 130 becoming too high, a heat dissipation channel 112 is provided on the fixing block 110. One end of the heat dissipation channel 112 is connected to the through hole 111, and the other end of the heat dissipation channel 112 can be connected to a heat dissipation device. For example, the heat dissipation device can emit a low-temperature gas, which can be blown through the heat dissipation channel 112 to the welding nozzle 130 in the through hole 111 to cool the welding nozzle 130 and prevent the temperature of the welding nozzle 130 from becoming too high.

[0046] In one embodiment of this application, as Figure 2 As shown, the fixing block 110 includes a first pressing block 113 and a second pressing block 114. The first pressing block 113 has a first hole 1131, and the second pressing block 114 has a second hole 1141. The first hole 1131 and the second hole 1141 form a through hole 111. The first pressing block 113 and the second pressing block 114 can slide relative to each other along the axial direction of the through hole 111. The welding nozzle 130 passes through the second hole 1141, and the first end of the welding nozzle 130 is disposed in the first hole 1131.

[0047] In this embodiment, the fixing block 110 is configured to consist of a first pressing block 113 and a second pressing block 114, mainly to facilitate the fixing of the fixing block 110 and to facilitate the connection of the welding nozzle 130 into the through hole 111. Since the fixing block 110 has a through hole 111, a first hole 1131 is provided on the first pressing block 113, and a second hole 1141 is provided on the second pressing block 114. When the first pressing block 113 and the second pressing block 114 come into contact, the first hole 1131 and the second hole 1141 communicate, forming the through hole 111. That is, the first hole 1131 is a hole that penetrates the first pressing block 113, and the second hole 1141 is a hole that penetrates the second pressing block 114.

[0048] When fixing the fixing block 110, the second pressure block 114 can be fixedly connected to the mounting plate 200. The first pressure block 113 and the second pressure block 114 are configured to slide relative to each other along the axial direction of the through hole 111, which can maintain the relative sliding between the first pressure block 113 and the mounting plate 200. The first end of the welding nozzle 130 is placed in the first hole 1131, and the welding nozzle 130 passes through the second hole 1141. When the second end of the welding nozzle 130 contacts the workpiece to be welded, since the first pressure block 113 can slide relative to the second pressure block 114, the impact when the welding nozzle 130 contacts the workpiece 260 can be avoided.

[0049] In one embodiment of this application, as Figure 4 As shown, the heat dissipation channel 112 is disposed on the second pressure block 114, and the heat dissipation channel 112 is connected to the second hole 1141.

[0050] Since the fixing block 110 is composed of a first pressing block 113 and a second pressing block 114, the heat dissipation channel 112 on the fixing block 110 can be set on either the first pressing block 113 or the second pressing block 114. However, in this embodiment, the welding nozzle 130 is set inside the through hole 111 and is sealed to the through hole 111. The first end of the welding nozzle 130 is set inside the first hole 1131, so the first end of the welding nozzle 130 needs to be sealed to the first hole 1131. In this application, the air extraction device is connected to the welding space 150 and is used to extract air from the welding space 150. The heat dissipation channel 112 is used to supply air into the through hole 111 to cool the welding nozzle 130. Therefore, the heat dissipation channel 112 cannot be connected to the welding space 150 to avoid affecting the air pressure inside the welding space 150. Therefore, by setting the heat dissipation channel 112 on the second pressure block 114 and connecting the heat dissipation channel 112 with the second hole 1141, the welding nozzle 130 can be cooled down without affecting the air pressure in the welding space 150.

[0051] In one embodiment of this application, as Figure 2 and Figure 5 As shown, the first pressing block 113 and the second pressing block 114 are connected by a slide rod 160. The two ends of the slide rod 160 are respectively provided with limiting ears 161 to restrict the first pressing block 113 and the second pressing block 114 from sliding out of the slide rod 160.

[0052] By slidably connecting the first pressing block 113 and the second pressing block 114 to the slide rod 160, the first pressing block 113 can slide along the slide rod 160, and the second pressing block 114 can also slide along the slide rod 160, thus achieving relative sliding between the first pressing block 113 and the second pressing block 114. By providing limiting ears 161 at both ends of the slide rod 160, the first pressing block 113 and the second pressing block 114 can be prevented from slipping off the slide rod 160.

[0053] In one embodiment of this application, as Figure 5 As shown, a spring 170 is sleeved on the slide rod 160. One end of the spring 170 abuts against the first pressure block 113, and the other end of the spring 170 abuts against the limiting ear 161 near the first pressure block 113.

[0054] In this embodiment, by sleeved with a spring 170 on the slide rod 160, when the welding nozzle 130 contacts the workpiece 260 to be welded and a certain force is applied to the workpiece 260 to make the welding nozzle 130 and the workpiece 260 to be welded in close contact, the workpiece 260 to be welded generally does not move. Therefore, due to the reaction of the force, the welding nozzle 130 will slide on the slide rod 160 along with the first pressure block 113. Since one end of the spring 170 abuts against the first pressure block 113 and the other end of the spring 170 abuts against the limiting ear 161 near the first pressure block 113, the first pressure block 113 will compress the spring 170. When the external force applied to the workpiece 260 to be welded is stopped, the compressed spring 170 will generate elastic force, causing the first pressure block 113 to tend to move toward the workpiece 260 to be welded. This causes the welding nozzle 130 to tend to move toward the workpiece 260 to be welded, thereby enabling the welding nozzle 130 to maintain a tight connection with the workpiece 260 to achieve a sealed connection between the welding nozzle 130 and the workpiece 260.

[0055] In one embodiment of this application, as Figure 5 As shown, to facilitate the placement of the spring 170, a first countersunk hole 1132 is provided on the first pressure block 113. The spring 170 is located within the first countersunk hole 1132, and the sliding rod 160 passes through the first countersunk hole 1132. It should be noted that the axis of the first countersunk hole 1132 can be aligned with the axis of the through hole 111 (or the first hole 1131). Correspondingly, a second countersunk hole 1142 can be provided on the second pressure block 114. The sliding rod 160 passes through the second countersunk hole 1142, and the limiting lug 161 on one end of the sliding rod 160 can be located within the second countersunk hole 1142. Similarly, the axis of the second countersunk hole 1142 can be aligned with the axis of the through hole 111 (or the second hole 1141).

[0056] In one embodiment of this application, as Figure 2 As shown, the second pressing block 114 includes a first sub-pressing block 115 and a second sub-pressing block 116. The first sub-pressing block 115 is disposed between the second sub-pressing block 116 and the first pressing block 113. The first sub-pressing block 115 and the second sub-pressing block 116 are detachably connected.

[0057] In this embodiment, the second pressure block 114 is used to connect with the mounting plate 200 that fixes the fixing block 110. The second pressure block 114 is configured as a first sub-pressure block 115 and a second sub-pressure block 116, and the first sub-pressure block 115 and the second sub-pressure block 116 are detachably connected. This facilitates the fixing of the second pressure block 114 to the mounting plate 200. The first sub-pressure block 115 and the second sub-pressure block 116 can be connected by screws or bolts, which facilitates both tightening and disassembly.

[0058] In one embodiment of this application, as Figures 1 to 5 As shown, it also includes an annular clamping plate 180, a boss 1111 is provided on the through hole 111, the annular clamping plate 180 is connected to the boss 1111, and the light-transmitting sheet 140 is located between the annular clamping plate 180 and the boss 1111.

[0059] Since a light-transmitting plate 140 is provided at the end of the through hole 111 away from the welding nozzle 130, a boss 1111 can be provided at the end of the through hole 111 away from the welding nozzle 130 to place the light-transmitting plate 140. An annular clamping plate 180 can be provided to fix the light-transmitting plate 140. The annular clamping plate 180 is fixedly connected to the boss 1111, and the light-transmitting plate 140 can be placed between the annular clamping plate 180 and the boss 1111 to fix the light-transmitting plate 140. The annular clamping plate 180 is provided to prevent it from blocking the laser emitted by the laser welding device, allowing the laser to pass through the light-transmitting plate 140 and irradiate the workpiece 260 to be welded.

[0060] In one embodiment of this application, as Figure 2 As shown, a sealing gasket 190 is provided at the second end of the welding nozzle 130. The sealing gasket 190 is used to achieve a seal between the welding nozzle 130 and the workpiece 260 to be welded. By providing a sealing gasket 190 at the second end of the welding nozzle 130, the sealing effect between the welding nozzle 130 and the workpiece 260 to be welded can be increased when the welding nozzle 130 contacts the workpiece 260.

[0061] In one embodiment of this application, a busbar welding fixture is also provided, including a mounting plate 200 and two busbar welding assemblies as described in any of the above embodiments. The two busbar welding assemblies are fixedly connected to the mounting plate 200. The two busbar welding assemblies facilitate simultaneous welding of the positive and negative electrodes on the workpiece 260 (busbar) to be welded. In this embodiment, the second pressure block 114 can be made of a non-metallic material to prevent the positive and negative electrodes on the workpiece 260 (busbar) from being electrically connected during the welding process.

[0062] In this assembly, the second pressure block 114 of the busbar welding component is fixedly connected to the mounting plate 200. Specifically, the first sub-pressure block 115 and the second sub-pressure block 116 of the second pressure block 114 are respectively disposed on both sides of the mounting plate 200. The first sub-pressure block 115 and the second sub-pressure block 116 are connected to the mounting plate 200 by bolts or screws. The mounting plate 200 has holes through which the welding nozzle 130 passes. The diameter of the holes in the mounting plate 200 is larger than the diameter of the welding nozzle 130, and a gap is maintained between the welding nozzle 130 and the mounting plate 200 when the welding nozzle 130 passes through the holes. That is, the welding nozzle 130 does not contact the mounting plate 200.

[0063] In one embodiment of this application, as Figure 1 As shown, the busbar welding fixture also includes a base 210 and a mounting bracket 220. The mounting bracket 220 includes a first sliding rail 230, a second sliding rail 240 and a third sliding rail 250. The first sliding rail 230 is fixedly connected to the base 210, the second sliding rail 240 is slidably connected to the first sliding rail 230, the third sliding rail 250 is slidably connected to the second sliding rail 240, and the mounting plate 200 is slidably connected to the third sliding rail 250.

[0064] In one embodiment of this application, the direction in which the second sliding rail 240 slides on the first sliding rail 230, the direction in which the third sliding rail 250 slides on the second sliding rail 240, and the direction in which the mounting plate 200 slides on the third sliding rail 250 are perpendicular to each other.

[0065] By setting the first sliding rail 230, the second sliding rail 240 and the third sliding rail 250, the busbar welding assembly set on the mounting plate 200 can move in different directions, which is conducive to adjusting the position of the busbar welding assembly and realizing the positional matching between it and the workpiece 260 to be welded placed on the base 210, so as to facilitate welding of the workpiece 260.

[0066] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application.

[0067] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0068] Although preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they are aware of the basic inventive concepts. Therefore, the scope of protection of this application includes the preferred embodiments and all changes and modifications that fall within the scope of the embodiments of the present invention.

[0069] This document uses specific examples to illustrate the working principle and implementation method of the bus welding assembly and bus welding fixture of this application. The above description of the embodiments is only for the purpose of helping to understand the specific settings and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation method and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

[0070] The above content is only a specific embodiment of this application, but the scope of protection of this application is not limited to this. Any changes or replacements within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A busbar welding assembly, characterized in that, It includes a fixing block, an air extraction channel, and a welding nozzle. The fixing block is provided with a through hole. The welding nozzle is hollow inside and is disposed in the through hole and sealed to the through hole. The first end of the welding nozzle is located inside the through hole, and the second end of the welding nozzle is located outside the through hole. A light-transmitting sheet is provided at the end of the through hole away from the welding nozzle, and the light-transmitting sheet is sealed to the through hole; The second end of the welding nozzle is used to abut against the workpiece to be welded and is sealed to the workpiece. The welding nozzle and the through hole are located in the internal space between the workpiece to be welded and the light-transmitting sheet, which is the welding space. The air extraction channel is connected to the welding space, and the air pressure in the welding space is extracted to a preset air pressure through the air extraction channel.

2. The busbar welding assembly according to claim 1, characterized in that, The fixing block is provided with a heat dissipation channel, which is connected to the through hole.

3. The busbar welding assembly according to claim 2, characterized in that, The fixing block includes a first pressing block and a second pressing block. The first pressing block is provided with a first hole, and the second pressing block is provided with a second hole. The first hole and the second hole form the through hole. The first pressure block and the second pressure block can slide relative to each other along the axial direction of the through hole, the welding nozzle passes through the second hole, and the first end of the welding nozzle is disposed in the first hole.

4. The busbar welding assembly according to claim 3, characterized in that, The heat dissipation channel is disposed on the second pressure block, and the heat dissipation channel is connected to the second hole.

5. The busbar welding assembly according to claim 4, characterized in that, The first pressure block and the second pressure block are connected by a slide rod, and the two ends of the slide rod are respectively provided with limiting ears to prevent the first pressure block and the second pressure block from sliding out of the slide rod.

6. The busbar welding assembly according to claim 5, characterized in that, A spring is fitted onto the slide rod, with one end of the spring abutting against the first pressure block and the other end of the spring abutting against a limiting ear near the first pressure block.

7. The busbar welding assembly according to claim 6, characterized in that, The first pressure block is provided with a first countersunk hole, the spring is located in the first countersunk hole, and the slide rod passes through the first countersunk hole.

8. The busbar welding assembly according to claim 7, characterized in that, The second pressing block includes a first sub-pressing block and a second sub-pressing block. The first sub-pressing block is disposed between the second sub-pressing block and the first pressing block, and the first sub-pressing block and the second sub-pressing block are detachably connected.

9. The bus welding assembly according to any one of claims 1 to 8, characterized in that, It also includes an annular clamping plate, a boss is provided on the through hole, the annular clamping plate is connected to the boss, and the light-transmitting sheet is located between the annular clamping plate and the boss.

10. The busbar welding assembly according to claim 9, characterized in that, A sealing gasket is provided at the second end of the welding nozzle, which is used to seal the welding nozzle and the workpiece to be welded.

11. A busbar welding fixture, characterized in that, It includes a mounting plate and two bus welding assemblies as described in any one of claims 1 to 10, the two bus welding assemblies being fixedly connected to the mounting plate.

12. The busbar welding fixture according to claim 11, characterized in that, It also includes a base and a mounting bracket, the mounting bracket including a first sliding rail, a second sliding rail and a third sliding rail, the first sliding rail being fixedly connected to the base, the second sliding rail being slidably connected to the first sliding rail, the third sliding rail being slidably connected to the second sliding rail, and the mounting plate being slidably connected to the third sliding rail.

13. The busbar welding fixture according to claim 12, characterized in that, The directions in which the second sliding track slides on the first sliding track, the directions in which the third sliding track slides on the second sliding track, and the directions in which the mounting plate slides on the third sliding track are perpendicular to each other.

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