Ultrasonic welding equipment and welding system

Abstract

The utility model provides ultrasonic welding equipment and a welding system. The ultrasonic welding equipment comprises a welding head dust blocking assembly and a welding seat dust blocking assembly. The welding head dust blocking assembly comprises a welding head and a first energy absorption pad. The welding seat dust blocking assembly comprises a second welding seat energy absorption pad. The first side of the welding head and the first side of the welding seat face the tray; the tray is used for supporting a roll core of the battery, and a tab of the battery extends out of the roll core. In a welding state, the tab is arranged on the welding seat; the welding head dust blocking assembly is configured to move downwards so that the welding head can press the electrode lug, and the first energy absorption pad and the second energy absorption pad can make contact with or abut against the top face and the bottom face of the electrode lug correspondingly. According to the embodiment, ultrasonic energy can be prevented from overflowing to take away dust, the dust removal structure is simplified, and the research and development cost and economic cost of dust removal are reduced.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular, to an ultrasonic welding device and a welding system. Background Art

[0002] With the development of science and technology, batteries are increasingly used in portable mobile electronic products, power tools, new energy and other related industries.

[0003] In the related technology, an ultrasonic welding machine is used to weld the battery core tabs. During the welding process, metal debris and other dust are generated. Due to the ultrasonic vibration, the energy overflow carries away the dust and splashes everywhere. The dust splashed near the tab side may invade the interior of the core, posing a huge safety hazard.

[0004] Related technologies use dust removal mechanisms to remove dust generated during welding. However, due to the confined space for ultrasonic welding of tabs, miniaturization of dust removal mechanisms is challenging, and complete dust removal is difficult. Increasing the dust removal air speed can cause tab vibration, impacting welding yield, and may also remove other essential materials, disrupting the welding process. Utility Model Content

[0005] In view of the shortcomings of existing methods, this application proposes an ultrasonic welding device and a welding system to solve the technical problems in related technologies such as the difficulty in miniaturizing the design of dust removal mechanisms, the difficulty in completely removing dust, or the impact on welding yield.

[0006] In a first aspect, an embodiment of the present application provides an ultrasonic welding device for ultrasonically welding a battery tab, comprising:

[0007] A welding head dust shield assembly comprises a welding head and a first energy absorbing pad provided on a first side of the welding head;

[0008] A welding seat dust shield assembly comprises a welding seat and a second energy absorbing pad provided on a first side of the welding seat;

[0009] The first side of the welding head and the first side of the welding seat are both facing the tray; the tray is used to support the winding core of the battery, and the battery tab extends from the winding core;

[0010] In the welding state, the tab is placed on the welding seat; the welding head dust shield assembly is configured to move downward so that the welding head presses the tab and the first energy absorbing pad and the second energy absorbing pad respectively contact or abut the top surface and bottom surface of the tab.

[0011] In some possible embodiments, the welding head dust shield assembly further includes: a first cover body, which is hollow and has an opening at the bottom;

[0012] The welding head is placed in the first cover; the first side wall of the first cover is located on the first side of the welding head; the first energy absorbing pad is attached to the outside of the first side wall;

[0013] The welding base dust shield assembly further includes: a second cover body, which is hollow and has an opening at the top;

[0014] The welding seat is placed in the second cover; the second side wall of the second cover is located on the first side of the welding seat; the second energy absorbing pad is attached to the outside of the second side wall;

[0015] In the welding state, the bottom of the first cover body and the top of the second cover body are aligned to form a closed cavity.

[0016] In some possible embodiments, at least one first dust suction port is provided on the first cover; and / or at least one second dust suction port is provided on the second cover;

[0017] The ultrasonic welding equipment also includes a dust guide pipe connected to the first dust suction port and the second dust suction port in a one-to-one correspondence.

[0018] In some possible embodiments, at least one of the following is included:

[0019] At least two first dust suction ports are arranged opposite to each other and are respectively opened on two opposite sides of the first cover body;

[0020] The plurality of second dust suction ports are all arranged on the same surface of the second cover body.

[0021] In some possible embodiments, the bottom of the first energy absorbing pad contacts the top of the second energy absorbing pad and encloses a hollow area for the tab to pass through, isolating the welding head from the winding core.

[0022] In some possible embodiments, the first dust suction port is opened on the side of the first cover body;

[0023] The end of the dust guide pipe connected to the first dust suction port faces upward.

[0024] In some possible embodiments, the dust guide tubes connected to the oppositely arranged first dust suction ports have the same shape and are symmetrically arranged.

[0025] In some possible embodiments, a shock-absorbing block is provided at an edge of the bottom opening of the first cover body and / or an edge of the top opening of the second cover body;

[0026] In the welding state, the first cover body, the shock absorbing block and the second cover body are in contact or abutment with each other in sequence.

[0027] In some possible embodiments, the welding head dust shield assembly further includes:

[0028] The rear seat is set horizontally, with one end connected to the welding head;

[0029] an annular fixing member, sleeved on the outer periphery of the rear seat, with the first end surface facing the welding head;

[0030] The first cover body has an opening on one side opposite to the first energy absorbing pad for the rear seat to pass through and is sealed and connected to the first end surface.

[0031] In a second aspect, an embodiment of the present application further provides a welding system, comprising: a tray, a battery, and any ultrasonic welding device provided in the first aspect;

[0032] The battery includes a winding core and tabs connected to each other; the winding core is placed on a tray, and the tabs extend from the winding core;

[0033] In the welding state, the welding head of the ultrasonic welding equipment is pressed onto the tab placed on the welding seat of the ultrasonic welding equipment.

[0034] The beneficial technical effects brought about by the technical solutions provided in the embodiments of the present application include:

[0035] In the embodiment of the present application, the welding head and the first energy-absorbing pad are integrated into the welding head dust shield assembly, and the welding base and the second energy-absorbing pad are integrated into the welding base dust shield assembly. During the welding process, when the welding head moves downward to press the tab, the first energy-absorbing pad moves downward synchronously, and clamps the top and bottom surfaces of the tab together with the second energy-absorbing pad. When the energy of ultrasonic welding is transmitted to the tab through the welding head, the first energy-absorbing pad and the second energy-absorbing pad can absorb part of the energy, thereby preventing the ultrasonic energy from overflowing and carrying away dust, preventing dust from splashing, and facilitating centralized dust removal, thereby ensuring welding yield.

[0036] Moreover, the first energy absorbing pad and the second energy absorbing pad are both isolated between the winding core and the welding head, and can also play a certain blocking role, preventing the risk of pollution caused by dust splashing onto the winding core and being taken away by the pallet.

[0037] Moreover, the integrated design of the first energy absorbing pad and the welding head, and the integrated design of the second energy absorbing pad and the welding seat in the embodiment of the present application can simplify the dust removal structure, eliminating the need to design a separate dust removal structure, and can reduce the R&D cost and economic cost of dust removal.

[0038] Additional aspects and advantages of the present application will be given in part in the following description, which will become apparent from the following description, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0040] Figure 1 A schematic structural diagram of a welding system provided in an embodiment of the present application;

[0041] Figure 2 A simplified structural diagram of a welding system provided in an embodiment of the present application;

[0042] Figure 3 A schematic structural diagram of a dust shield assembly for a welding head of an ultrasonic welding device provided in an embodiment of the present application;

[0043] Figure 4 A schematic structural diagram of a welding base dust shield assembly and a shock-absorbing block of an ultrasonic welding device provided in an embodiment of the present application;

[0044] Figure 5 A schematic diagram of the structure of a tray and a battery provided in an embodiment of the present application;

[0045] Figure 6 A schematic diagram of the energy absorption principle of a first energy absorption pad provided in an embodiment of the present application.

[0046] Reference numerals:

[0047] 100-Ultrasonic welding equipment;

[0048] 110 - welding head dust shield assembly; 111 - welding head; 112 - first energy absorbing pad; 113 - first cover; 114 - first dust guide pipe; 115 - second dust guide pipe; 116 - rear seat; 117 - annular fixing member;

[0049] 120 - welding base dust shield assembly; 121 - welding base; 122 - second energy absorbing pad; 123 - second cover; 124 - third dust guide tube; 125 - fourth dust guide tube; 126 - base;

[0050] 130- shock absorber block;

[0051] 200-battery; 210-winding core; 220-tab;

[0052] 300-Pallet. DETAILED DESCRIPTION

[0053] The following describes the embodiments of the present application in conjunction with the accompanying drawings. It should be understood that the embodiments described below in conjunction with the accompanying drawings are exemplary descriptions for explaining the technical solutions of the embodiments of the present application and do not constitute a limitation on the technical solutions of the embodiments of the present application.

[0054] Those skilled in the art will understand that, unless otherwise stated, the terms "said" and "the" used herein may also include plural forms. It should be further understood that the term "including" used in the specification of this application refers to the presence of the features, integers, operations, elements and / or components, but does not exclude the implementation of other features, information, data, operations, elements, components and / or their combinations supported by the technical field. The term "and / or" used herein refers to at least one of the items defined by the term, for example, "A and / or B" can be implemented as "A", or as "B", or as "A and B".

[0055] In order to make the objectives, technical solutions and advantages of this application clearer, the implementation methods of this application will be further described in detail below with reference to the accompanying drawings.

[0056] The research and development ideas of this application include: With the development of science and technology, batteries are increasingly used in portable mobile electronic products, power tools, new energy and other related industries.

[0057] In the related technology, an ultrasonic welding machine is used to weld the battery core tabs. During the welding process, metal debris and other dust are generated. Due to the ultrasonic vibration, the energy overflow carries away the dust and splashes everywhere. The dust splashed near the tab side may invade the interior of the core, posing a huge safety hazard.

[0058] Related technologies use dust removal mechanisms to remove dust generated during welding. However, due to the confined space for ultrasonic welding of tabs, miniaturization of dust removal mechanisms is challenging, and complete dust removal is difficult. Increasing the dust removal air speed can cause tab vibration, impacting welding yield, and may also remove other essential materials, disrupting the welding process.

[0059] The ultrasonic welding equipment and welding system provided in this application are intended to solve the above technical problems of related technologies.

[0060] The following is a detailed description of the technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems with specific embodiments. It should be noted that the following embodiments can refer to, draw on, or combine with each other, and the same terms, similar features, and similar implementation steps in different embodiments will not be repeated.

[0061] The present application embodiment provides an ultrasonic welding device 100 for ultrasonically welding the tab 220 of a battery 200. Figure 1-Figure 4 The ultrasonic welding equipment 100 includes: a welding head dust shield assembly 110 and a welding base dust shield assembly 120.

[0062] The welding head dust shield assembly 110 includes a welding head 111 and a first energy absorbing pad 112 disposed on a first side of the welding head 111 .

[0063] The welding seat dust shield assembly 120 includes a welding seat 121 and a second energy absorbing pad 122 provided on a first side of the welding seat 121 .

[0064] The first side of the welding head 111 and the first side of the welding seat 121 are both facing the tray 300 ; the tray 300 is used to support the winding core 210 of the battery 200 , and the tabs 220 of the battery 200 extend from the winding core 210 .

[0065] In the welding state, the tab 220 is placed on the welding seat 121; the welding head dust shield assembly 110 is configured to move downward so that the welding head 111 presses the tab 220 and the first energy absorbing pad 112 and the second energy absorbing pad 122 respectively contact or abut the top surface and bottom surface of the tab 220.

[0066] In this embodiment, the welding head 111 and the first energy absorbing pad 112 are integrated into the welding head dust shield assembly 110, and the welding seat 121 and the second energy absorbing pad 122 are integrated into the welding seat dust shield assembly 120. Figure 2 As shown, during the welding process, as the welding head 111 moves downward to press the tab 220, the first energy-absorbing pad 112 simultaneously moves downward, clamping the tab 220 with the second energy-absorbing pad 122. When the ultrasonic welding energy is transmitted to the tab 220 by the welding head 111, the first energy-absorbing pad 112 and the second energy-absorbing pad 122 can absorb some of the energy, thereby preventing the ultrasonic energy from escaping and carrying away dust, preventing dust from scattering, and facilitating centralized dust removal, thereby ensuring welding yield.

[0067] Moreover, the first energy absorbing pad 112 and the second energy absorbing pad 122 are both isolated between the winding core 210 and the welding head 111 , and can also play a certain blocking role, preventing the risk of contamination caused by dust splashing onto the winding core 210 and being carried away by the tray 300 .

[0068] Moreover, the integrated design of the first energy absorption pad 112 and the welding head 111, and the integrated design of the second energy absorption pad 122 and the welding seat 121 in the embodiment of the present application can simplify the dust removal structure, eliminating the need to design a separate dust removal structure, and can reduce the R&D cost and economic cost of dust removal.

[0069] Optionally, the bottom of the first energy absorbing pad 112 is not higher than the bottom of the welding head 111 .

[0070] Optionally, the top of the second energy absorbing pad 122 is not lower than the top of the welding seat 121 .

[0071] like Figure 6 As shown, when the welding head 111 moves downward to press the pole ear 220, the first energy absorbing pad 112 moves downward synchronously to press the pole ear 220. At this time, the welding head 111 is located on the right side of the first energy absorbing pad 112. The energy generated during the welding process is transmitted to the first energy absorbing pad 112 through the pole ear 220. The first energy absorbing pad 112 absorbs most of the energy, which can reduce the diffusion of ultrasonic energy and thus reduce dust overflow.

[0072] It should be noted that in the embodiments of the present application, the top portion refers to the top end of the welding system facing upward in the vertical direction when the welding system is in an upright position, and the bottom portion refers to the bottom end of the welding system facing downward in the vertical direction when the welding system is in an upright position. The side refers to the front, back, or left, right, or side of the welding system when the welding system is in an upright position.

[0073] Optionally, both the first energy absorbing pad 112 and the second energy absorbing pad 122 can be made of rubber.

[0074] Alternatively, as Figure 5 As shown, the tray 300 is used to support the winding core 210 of the battery 200 , and the tabs 220 of the battery 200 extend from the winding core 210 .

[0075] In some possible embodiments, the bottom of the first energy absorbing pad 112 contacts the top of the second energy absorbing pad 122 and encloses a hollow area for the tab 220 to pass through, isolating the welding head 111 from the winding core 210 .

[0076] For some possible embodiments, please refer to Figure 1-Figure 4 The welding head dust shield assembly 110 also includes: a first cover body 113 and a second cover body 123.

[0077] The first cover body 113 is hollow and has an open bottom.

[0078] The welding head 111 is placed in the first cover 113 ; the first side wall of the first cover 113 is located on the first side of the welding head 111 ; and the first energy absorbing pad 112 is attached to the outside of the first side wall.

[0079] The second cover body 123 is hollow and has an open top.

[0080] The welding seat 121 is placed in the second cover 123 ; the second side wall of the second cover 123 is located on the first side of the welding seat 121 ; and the second energy absorbing pad 122 is attached to the outside of the second side wall.

[0081] In the welding state, the bottom of the first cover body 113 and the top of the second cover body 123 are aligned to form a closed cavity.

[0082] In this embodiment, if Figure 3 As shown, the first cover 113 is a hollow structure, the welding head 111 is placed inside the first cover 113, and the first energy absorbing pad 112 is attached to the outer surface of the first side wall of the first cover 113. Figure 4 As shown, the second cover 123 is a hollow structure, the welding seat 121 is placed inside the second cover 123, and the second energy absorbing pad 122 is fitted on the outer surface of the second side wall of the second cover 123. During welding, the welding head dust shield assembly 110 moves downward as a whole, so that the welding head 111 presses the tab 220, the first energy absorbing pad 112 contacts or abuts the tab 220, and the bottom of the first cover 113 and the top of the second cover 123 are aligned and connected to form a closed cavity. The dust generated during the welding process can be sealed in the cavity to prevent dust from overflowing and facilitate centralized dust removal.

[0083] In some possible embodiments, at least one first dust suction port is defined on the first cover body 113 .

[0084] In this embodiment, at least one first dust suction port is provided on the first cover body 113 , and dust in the closed cavity can be removed through the first dust suction port to prevent dust from accumulating in the closed cavity and affecting the welding operation.

[0085] In some possible embodiments, at least one second dust suction port is defined on the second cover body 123 .

[0086] In this embodiment, at least one second dust suction port is provided on the second cover body 123 , through which dust in the closed cavity can be removed to prevent dust from accumulating in the closed cavity and affecting the welding operation.

[0087] In some possible embodiments, such as Figure 1 As shown, the dust guide pipes are connected to the first dust suction port and the second dust suction port in a one-to-one correspondence.

[0088] In this embodiment, the dust guide pipe is connected to each of the first dust suction port and the second dust suction port, so as to guide the dust suction path and prevent the dust from spreading after being sucked out.

[0089] Alternatively, as Figure 1 As shown, the dust guide pipe includes a first dust guide pipe 114 connected to the first dust suction port, a second dust guide pipe 115, a third dust guide pipe 124 connected to the second dust suction port, and a fourth dust guide pipe 125.

[0090] Optionally, the negative pressure can be increased in the existing negative pressure pipeline of the welding system. Since the welding part of the pole ear 220 is wrapped inside the closed cavity formed by the first cover body 113 and the second cover body 123, increasing the negative pressure will not significantly change the density and flow characteristics of the fluid in the closed cavity, so that the change in wind speed has little effect on the fluid and basically has no effect on the pole ear 220.

[0091] In some possible embodiments, at least two first dust suction ports are arranged opposite to each other and are respectively opened on two opposite sides of the first cover body 113 .

[0092] In this embodiment, the relatively arranged suction ports can prevent the negative pressure in the closed cavity from generating vortexes during suction, thereby ensuring the stability of the fluid flow and the heat transfer efficiency in the closed cavity.

[0093] In some possible embodiments, the plurality of second suction ports are all opened on the same surface of the second cover body 123 .

[0094] In this embodiment, the dust collected below the closed cavity can be sucked away through the second suction port. Moreover, the plurality of second suction ports are all opened on the same side of the second cover body 123, which facilitates the installation of a dust collection pipe or dust collection structure on the same side, reducing design complexity.

[0095] In some possible embodiments, the first dust suction port is opened on a side surface of the first cover body 113 .

[0096] The end of the dust guide pipe connected to the first dust suction port faces upward.

[0097] In this embodiment, the first dust suction port is opened on the side of the first cover body 113, and each dust guide tube connected to the first dust suction port is bent upward from the first dust suction port on the side, with the ends all facing upward, so as to facilitate the setting of a dust suction pipe or dust collection structure at the top of the welding head dust shield assembly 110, thereby reducing the design complexity.

[0098] Alternatively, as Figure 3 As shown, the ends of the first dust guiding tube 114 and the second dust guiding tube 115 are both facing upward.

[0099] In some possible embodiments, the dust guide tubes connected to the oppositely arranged first dust suction ports have the same shape and are symmetrically arranged.

[0100] In this embodiment, the dust guide pipes connected to the oppositely arranged first dust suction ports are of the same shape and symmetrically arranged, which can ensure that dust is effectively absorbed from different directions, thereby improving the overall dust removal efficiency. Moreover, it can also enhance structural stability and reduce airflow interference.

[0101] Alternatively, as Figure 3 As shown, the first dust guiding tube 114 and the second dust guiding tube 115 have the same shape and are symmetrically arranged.

[0102] For some possible embodiments, please refer to Figure 1 and Figure 4 Shock-absorbing blocks 130 are provided at the edge of the bottom opening of the first cover body 113 and / or the edge of the top opening of the second cover body 123 .

[0103] In the welding state, the first cover 113 , the shock absorbing block 130 and the second cover 123 are in contact or abutment with each other in sequence.

[0104] In this embodiment, the shock absorbing block 130 is elastic and can be located at the bottom of the first cover 113 or at the top of the second cover 123. The first cover 113, the shock absorbing block 130, and the second cover 123 are in contact or abutment with each other in sequence, thereby ensuring the airtightness of the closed cavity formed by the first cover 113 and the second cover 123. Furthermore, the shock absorbing block 130 can also provide a certain cushioning effect on the downward movement of the first cover 113, reducing the possibility of damage caused by collision between the first cover 113 and the second cover 123.

[0105] Optionally, the shock absorbing block 130 may include a pad made of PU.

[0106] Optionally, the shock absorbing block 130 is arranged around the edge of the top opening of the second cover 123 except the edge where the second energy absorbing pad 122 is located, avoiding the second energy absorbing pad 122 to ensure effective contact or abutment between the second energy absorbing pad 122 and the tab 220.

[0107] In some possible embodiments, the welding head dust shield assembly 110 further includes: Figure 3 , rear seat 116 and annular fixing member 117.

[0108] The rear seat 116 is arranged horizontally, and one end thereof is connected to the welding head 111 .

[0109] The annular fixing member 117 is sleeved on the outer periphery of the rear seat 116 , with a first end surface facing the welding head 111 .

[0110] The first cover 113 has an opening on one side opposite to the first energy absorbing pad 112 , through which the rear seat 116 passes and is sealed and connected to the first end surface.

[0111] In this embodiment, the rear seat 116 provides stable support for the welding head 111, ensuring the precise positioning and stability of the welding head 111 during welding. The annular fixing member 117 is sleeved on the outer periphery of the rear seat 116 to provide support and fixed points for the first cover 113.

[0112] Based on the same inventive concept, an embodiment of the present application further provides a welding system, comprising: a tray 300, a battery 200, and any ultrasonic welding device 100 provided in the aforementioned embodiments;

[0113] The battery 200 includes a winding core 210 and tabs 220 connected to each other; the winding core 210 is placed on a tray 300 , and the tabs 220 extend from the winding core 210 .

[0114] In the welding state, the welding head 111 of the ultrasonic welding device 100 is pressed against the tab 220 placed on the welding seat 121 of the ultrasonic welding device 100 .

[0115] The present embodiment utilizes any of the ultrasonic welding devices 100 provided in the aforementioned embodiments. The implementation principles and structures are similar and will not be further described here. The first and second energy-absorbing pads 112, 122 of the ultrasonic welding device 100 can clamp the tab 220 from above. When the ultrasonic welding energy is transmitted to the tab 220 via the welding head 111, the first and second energy-absorbing pads 112, 122 absorb a portion of the energy, thereby preventing the ultrasonic energy from escaping and carrying away dust, preventing dust scattering and facilitating centralized dust removal. This ensures welding yield.

[0116] Moreover, the first energy absorbing pad 112 and the second energy absorbing pad 122 are isolated between the winding core 210 and the welding head 111 , and can also play a certain blocking role, preventing the risk of contamination caused by dust splashing onto the winding core 210 and being carried away by the tray 300 .

[0117] Moreover, the integrated design of the first energy absorption pad 112 and the welding head 111, and the integrated design of the second energy absorption pad 122 and the welding seat 121 in the embodiment of the present application can simplify the dust removal structure, eliminating the need to design a separate dust removal structure, and can reduce the R&D cost and economic cost of dust removal.

[0118] By applying the embodiments of the present application, at least the following beneficial effects can be achieved:

[0119] 1. In the embodiment of the present application, the welding head 111 and the first energy absorbing pad 112 are integrated into the welding head dust shield assembly 110, and the welding base 121 and the second energy absorbing pad 122 are integrated into the welding base dust shield assembly 120. During the welding process, when the welding head 111 moves downward to press the tab 220, the first energy absorbing pad 112 moves downward synchronously, and clamps the tab 220 with the second energy absorbing pad 122. When the ultrasonic welding energy is transmitted to the tab 220 through the welding head 111, the first energy absorbing pad 112 and the second energy absorbing pad 122 can absorb a portion of the energy, thereby preventing the ultrasonic energy from overflowing and carrying away dust, preventing dust from splashing, and facilitating centralized dust removal, thereby ensuring welding yield.

[0120] 2. In the embodiment of the present application, the first energy absorbing pad 112 and the second energy absorbing pad 122 are both isolated between the winding core 210 and the welding head 111, and can also play a certain blocking role to prevent the risk of pollution caused by dust splashing onto the winding core 210 and being carried away by the tray 300.

[0121] 3. In the embodiment of the present application, the integrated design of the first energy absorbing pad 112 and the welding head 111, and the integrated design of the second energy absorbing pad 122 and the welding seat 121 can simplify the dust removal structure, eliminating the need to design a separate dust removal structure, and can reduce the R&D cost and economic cost of dust removal.

[0122] 4. During welding in the embodiment of the present application, the welding head dust shield assembly 110 moves downward as a whole, so that the welding head 111 presses the pole ear 220, the first energy absorption pad 112 contacts or abuts the pole ear 220, and the bottom of the first cover body 113 and the top of the second cover body 123 are closed and connected to form a closed cavity, which can seal the dust generated during the welding process in the cavity, prevent the dust from overflowing, and facilitate centralized dust removal.

[0123] 5. The relatively arranged suction ports in the embodiment of the present application can prevent the negative pressure in the closed cavity from generating vortexes on the suction, thereby ensuring the stability of the fluid flow and the heat transfer efficiency in the closed cavity.

[0124] 6. In the embodiment of the present application, the shock absorbing block 130 is elastic. The shock absorbing block 130 can be set at the bottom of the first cover body 113 or at the top of the second cover body 123. The first cover body 113, the shock absorbing block 130 and the second cover body 123 are in contact or abutment with each other in sequence, which can ensure the airtightness of the closed cavity formed by the first cover body 113 and the second cover body 123.

[0125] In the description of the present application, the directions or positional relationships indicated by words such as "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", and "outside" are based on the exemplary directions or positional relationships shown in the accompanying drawings. They are for the convenience of describing or simplifying the description of the embodiments of the present application, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present application.

[0126] 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 the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout this application, unless otherwise specified, "plurality" means two or more.

[0127] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0128] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0129] The above is only part of the implementation methods of the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the technical concept of the solution of the present application, other similar implementation methods based on the technical ideas of the present application also fall within the protection scope of the embodiments of the present application.

Claims

1. An ultrasonic welding device, characterized in that: Used for ultrasonic welding of battery tabs, including: A welding head dust shield assembly comprises a welding head and a first energy absorbing pad provided on a first side of the welding head; A welding seat dust shield assembly comprises a welding seat and a second energy absorbing pad provided on a first side of the welding seat; The first side of the welding head and the first side of the welding seat are both facing the tray; the tray is used to support the winding core of the battery, and the tabs of the battery extend from the winding core; In the welding state, the tab is placed on the welding seat; the welding head dust shield assembly is configured to move downward so that the welding head presses the tab and the first energy absorbing pad and the second energy absorbing pad respectively contact or abut the top surface and bottom surface of the tab.

2. The ultrasonic welding equipment according to claim 1, characterized in that The welding head dust shield assembly further includes: a first cover body, which is hollow and has an opening at the bottom; The welding head is placed in the first cover; the first side wall of the first cover is located on the first side of the welding head; the first energy absorbing pad is attached to the outside of the first side wall; The welding base dust shield assembly further includes: a second cover body, which is hollow and has an opening at the top; The welding seat is placed in the second cover; the second side wall of the second cover is located on the first side of the welding seat; the second energy absorbing pad is attached to the outside of the second side wall; In the welding state, the bottom of the first cover body and the top of the second cover body are aligned to form a closed cavity.

3. The ultrasonic welding equipment according to claim 2, characterized in that The first cover body is provided with at least one first dust suction port; and / or the second cover body is provided with at least one second dust suction port; The ultrasonic welding equipment further includes: a dust guide pipe connected to the first dust suction port and the second dust suction port in a one-to-one correspondence.

4. The ultrasonic welding equipment according to claim 3, characterized in that Include at least one of the following: At least two first dust suction ports are arranged opposite to each other and are respectively opened on two opposite sides of the first cover body; The plurality of second dust suction ports are all opened on the same surface of the second cover body.

5. The ultrasonic welding equipment according to claim 3, characterized in that The bottom of the first energy absorbing pad contacts the top of the second energy absorbing pad and encloses a hollow area for the tab to pass through, isolating the welding head from the winding core.

6. The ultrasonic welding equipment according to claim 3, characterized in that The first dust suction port is opened on the side of the first cover; The end of the dust guide pipe connected to the first dust suction port faces upward.

7. The ultrasonic welding equipment according to claim 5, characterized in that The dust guide pipes connected to the first dust suction ports arranged opposite to each other have the same shape and are symmetrically arranged.

8. The ultrasonic welding equipment according to claim 2, characterized in that Shock-absorbing blocks are provided at the edge of the bottom opening of the first cover body and / or the edge of the top opening of the second cover body; In a welding state, the first cover body, the shock absorbing block and the second cover body are in contact or abutment with each other in sequence.

9. The ultrasonic welding equipment according to claim 2, characterized in that The welding head dust shield assembly also includes: A rear seat is arranged horizontally, one end of which is connected to the welding head; an annular fixing member, sleeved on the outer periphery of the rear seat, with a first end surface facing the welding head; The first cover body has an opening on one side opposite to the first energy absorbing pad, through which the rear seat passes and is sealed and connected to the first end surface.

10. A welding system, characterized in that: include: A tray, a battery, and an ultrasonic welding device according to any one of claims 1 to 9; The battery comprises a winding core and a tab connected to each other; the winding core is placed on the tray, and the tab extends from the winding core; In the welding state, the welding head of the ultrasonic welding device is pressed onto the tab placed on the welding seat of the ultrasonic welding device.

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