Welding device and battery welding equipment
By introducing a detachable connection structure and welding curved surface into the welding device, the problems of vulnerability of welding die heads and low welding yields are solved, and the effect of reducing maintenance costs and improving welding quality is achieved.
Patent Information
- Application Number
- CN202323489543.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-20
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2033-12-20
AI Technical Summary
During the welding process, existing ultrasonic welding devices are prone to problems such as damage to the welding die head and high maintenance costs, and the welding yield is low, which makes it easy to cause mold sticking of solder sticking.
A welding device is designed, which includes a detachable connection structure and a welding curved surface on the welding projection. The detachable connection structure allows for the replacement of vulnerable welding heads separately, reducing maintenance costs; the welding curved surface reduces the occurrence of mold sticking and improves welding yield by increasing the contact area and avoiding stress concentration.
The detachable connection structure reduces maintenance costs and improves the durability of the welding device; the welding curved surface effectively improves the welding yield, reduces the mold sticking problem, and extends the service life of the welding die head.
Smart Images
Figure CN222448687U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of welding, in particular to a welding device and a battery welding equipment. Background Art
[0002] Welding is a way of connecting objects by transferring energy to the objects to be welded, using or not welding fillers, so that the positions to be welded are combined. Taking ultrasonic welding as an example, ultrasonic welding is a welding process that connects the welding surfaces by applying high-frequency mechanical motion to the welding surfaces. Ultrasonic welding is widely used in the manufacturing field of various products because of its advantages of fast, efficient and flexible.
[0003] Ultrasonic welding is generally achieved by placing a welding die head against the object to be welded, and then transferring energy to the welding surface through the vibration of the welding die head, thereby quickly achieving welding. However, in the actual welding process, ultrasonic welding still encounters certain technical problems. For example, the welding die head is easily damaged due to high-frequency vibration, which further leads to excessively high maintenance costs for the welding die head.
[0004] For example, see Figure 1 The end of the welding die 10a is usually provided with a plurality of welding protrusions 11a, which are used to directly abut against the material for welding during welding. In order to reduce processing costs, the welding protrusion is usually configured as a prismatic or circular plane 12a. When the plane 12a is abutted against the material for welding in a plane contact manner, stress concentration problems may easily occur at the corners of the plane, resulting in a die sticking problem caused by solder adhesion during the welding process. Die sticking may cause the size specifications of the welding die to deviate from the standard, which may reduce the subsequent welding yield on the one hand and shorten the service life of a single welding die on the other hand, further increasing the maintenance cost of the welding die. Utility Model Content
[0005] The technical problem to be solved by the utility model is to provide a welding device and a battery welding equipment, which can solve the problems of high maintenance cost and low welding yield.
[0006] The first aspect of the utility model provides a welding device, which comprises:
[0007] seat body;
[0008] A welding head, wherein at least one welding protrusion is provided on the welding head, and a welding curved surface is provided on the welding protrusion, and the welding curved surface is used to abut against a welding material for welding; and
[0009] A detachable connecting structure, wherein the welding head is connected to the base body via the detachable connecting structure.
[0010] Preferably, the detachable connection structure comprises a socket provided on the base, and the welding head is detachably inserted into the socket; or
[0011] The detachable connection structure comprises a slot arranged on the seat body, and the welding head is detachably arranged in the slot.
[0012] Preferably, the detachable connection structure comprises a first thread and a second thread;
[0013] The first thread is arranged on the seat body, the second thread is arranged on the welding head, and the first thread is threadedly connected with the second thread.
[0014] Preferably, the welding device further comprises a locking structure;
[0015] The locking structure comprises a first locking hole, a second locking hole and a locking pin;
[0016] The first locking hole is arranged on the seat body, the second locking hole is arranged on the welding head, and the locking pin passes through the first locking hole and the second locking hole.
[0017] Preferably, the locking structure further includes an isolation sleeve, the isolation sleeve is arranged in the second locking hole, and the locking pin passes through the isolation sleeve.
[0018] Preferably, the locking pin is threadedly connected to the first locking hole; or
[0019] The locking pin is engaged with the seat body.
[0020] Preferably, each of the welding protrusions is provided with a welding ball portion, and the welding curved surface is located on the surface of the welding ball portion.
[0021] Preferably, a plurality of the welding protrusions are provided on the welding head, and the welding protrusions are distributed in an axisymmetric manner about the central axis of the welding head.
[0022] Preferably, the welding ball portion is spherical or hemispherical.
[0023] The second aspect of the utility model also provides a battery welding device, which includes the welding device described in any one of the above technical solutions, and the battery welding device also includes an ultrasonic driving component, which is driven and connected to the seat body, and the ultrasonic driving component drives the welding head to vibrate through the seat body.
[0024] The implementation of this utility model has the following beneficial effects:
[0025] The utility model relates to a welding device and a battery welding equipment, wherein the battery welding equipment is driven and connected to the welding device. On the welding device, a detachable connection structure is provided to realize a detachable connection between a seat body and a welding head, so that the vulnerable welding head can be replaced separately without replacing the entire welding device, thereby reducing maintenance costs;
[0026] Furthermore, by providing a welding curved surface on the end of the welding protrusion, on the one hand, the contact area between the welding protrusion and the welding material to be welded is increased, and on the other hand, compared with the flat welding method, the welding curved surface greatly avoids the problem of stress concentration between the corner position and the welding material, thereby greatly reducing the occurrence rate of mold sticking, effectively improving the welding yield, and also avoiding sticking that affects the service life, thereby improving the durability of the welding device. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments of the present invention in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present invention.
[0028] Figure 1 It is a structural schematic diagram of a welding die head in the related art;
[0029] Figure 2 It is a schematic diagram of the structure of the welding device in some embodiments of the utility model;
[0030] Figure 3 From another perspective Figure 2 A schematic structural diagram of the welding device shown;
[0031] Figure 4 is an exploded view of a welding device in some embodiments of the utility model;
[0032] Figure 5 From another perspective Figure 4 An exploded view of the welding device shown;
[0033] Figure 6 It is a schematic diagram of the internal structure of the welding device in some embodiments of the utility model;
[0034] Figure 7 It is a schematic diagram of the fracture structure of the welding device in some embodiments of the utility model. DETAILED DESCRIPTION
[0035] The embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although the embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.
[0036] It should be understood that although the terms "first", "second", "third", etc. may be used to describe various information in the present invention, this information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.
[0037] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0038] Unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.
[0039] Figure 2 and Figure 3 The welding device 10 of some embodiments of the utility model is shown. The welding device 10 is used to ultrasonically weld welding materials to be welded. The welding materials can be parts, components, devices, mechanisms or other structures in various fields. The welding device 10 includes a base 1, a welding head 2 and a detachable connection structure 3. The base 1 is used to fix the welding head 2. The welding head 2 is used to abut against the welding material to be welded for welding. The detachable connection structure 3 is used to detachably set the welding head 2 on the base 1.
[0040] like Figure 3 As shown, at least one welding protrusion 21 is provided on the welding head 2, and a welding curved surface 22 is provided on the welding protrusion 21. The welding curved surface 22 is used to abut against the welding material for welding.
[0041] It is understandable that the number of welding protrusions 21 can be set to one, two, three, four or more than four, and the specific number and density of settings are adjusted according to welding requirements. The contour and shape of the welding curved surface 22 can be configured as a common curved surface shape in the prior art, and the welding curved surface 22 is raised in a direction away from the welding protrusion 21. During the welding process, the welding protrusion 21 will be supported to the position on the welding material where welding is required, and then accompanied by the vibration of the welding protrusion 21, the welding curved surface 22 can also vibrate while maintaining the state of supporting the welding material, thereby completing the welding.
[0042] It should be noted that there are no edges or corners on the surface of the welding curved surface 22. Since the welding curved surface 22 is curved as a whole, the edge of the welding curved surface 22 will not contact or only slightly contact the welding material. Compared with the welding method in the prior art where the plane contacts and stress concentration occurs at the edge, this embodiment can greatly avoid stress concentration, thereby preventing a series of problems such as mold sticking.
[0043] like Figure 3 As shown, the welding head 2 is connected to the base body 1 through a detachable connection structure 3. It can be understood that the detachable connection structure 3 can be various structures commonly used in the relevant technology that can be disassembled and assembled when needed, but it is necessary to ensure that after the welding head 2 and the base body 1 are connected, the vibration of the base body 1 can be fully transmitted to the welding head 2, that is, the vibration amount needs to be stably and reliably transmitted at the contact position or connection position between the two, so as to ensure the smooth progress of ultrasonic welding.
[0044] In summary, since the welding head 2 can be replaced individually, even if the welding head 2 is made of a material with better wear resistance, the cost of the welding device will not be too high. The reason is that the seat body 1 can be made of a material that is different from the welding head 2 but has a lower cost. It only needs to ensure that the seat body 1 can smoothly transmit the vibration.
[0045] like Figure 4 and Figure 5 As shown, the detachable connection structure 3 has at least the following embodiments: In the first embodiment, a socket 31 is provided on the base body 1 , and the welding head 2 is detachably inserted into the socket 31 .
[0046] It can be understood that the socket 31 is used for the welding head 2 to be inserted therein, and during welding, vibration can be transmitted to the welding head 2 through the hole wall and the hole bottom of the socket 31. Of course, in order to prevent the welding head 2 from accidentally falling out of the socket 31, a structure in the prior art that can prevent accidental loosening after assembly can be set between the base 1 and the welding head 2.
[0047] It should be noted that the hole depth of the socket 31 is equal to the insertion depth of the welding head 2 in the socket 31, so that the bottom of the socket 31 can fully abut against the end of the welding head 2 in the socket 31, ensuring that the vibration can be effectively transmitted between the bottom of the socket 31 and the end face of the welding head 2. The socket 31 can be configured as a round hole, or a hole body with a cross section of a triangle, rectangle, pentagon, hexagon or other polygon. Correspondingly, the outer contour of the portion of the welding head 2 for corresponding insertion into the socket 31 is adapted to the hole wall contour of the socket 31, ensuring that the hole wall of the socket 31 can abut against the end of the welding head 2 to ensure the effective transmission of the vibration.
[0048] In the second embodiment, the detachable connection structure 3 includes a slot provided on the base 1, and the welding head 2 is detachably provided in the slot. It can be understood that the slot wall profile of the slot is preferably configured to match the profile of the portion of the welding head 2 placed in the slot, so as to ensure that the slot wall of the slot and the welding head 2 can effectively transfer vibration.
[0049] In the third embodiment, the detachable connection structure 3 includes a first thread and a second thread; the first thread is disposed on the base 1, the second thread is disposed on the welding head 2, and the first thread is threadedly connected with the second thread.
[0050] It can be understood that the first thread can be configured as an internal thread, and the second thread can be configured as an external thread. Of course, the first thread can also be configured as an external thread, and the second thread can be configured as an internal thread. Through the first thread and the second thread, the welding head 2 can be set on the seat body 1 in a threaded connection.
[0051] like Figure 2 and Figure 3 As shown, in some embodiments of the welding device 10, the welding device 10 further includes a locking structure 4. Figures 4 to 7 The locking structure 4 includes a first locking hole 41, a second locking hole 42 and a locking pin 43; the first locking hole 41 is arranged on the base body 1, the second locking hole 42 is arranged on the welding head 2, and the locking pin 43 passes through the first locking hole 41 and the second locking hole 42.
[0052] It can be understood that the locking structure 4 is used to fix the relative position of the welding head 2 and the base body 1 when necessary. When the welding head 2 is aligned and installed on the base body 1 through the detachable connection structure 3, the first locking hole 41 and the second locking hole 42 will be aligned and connected. At this time, the locking pin 43 is correspondingly inserted into the first locking hole 41 and the second locking hole 42, and the relative position of the welding head 2 and the base body 1 is fixed.
[0053] It can be understood that the radius of the locking pin 43 is equal to or slightly smaller than the aperture of the second locking hole 42, so as to eliminate the matching clearance between the locking pin 43 and the hole wall of the second locking hole 42 as much as possible to avoid affecting the effective transmission of vibration due to the installation matching clearance, thereby ensuring the welding yield. Of course, the locking pin 43 and the first locking hole 41 are also configured to fit tightly after installation to ensure the position stability of the locking pin 43.
[0054] It should be noted that the locking pin 43 can be configured as a cylinder with a uniform overall diameter, or a cylinder with inconsistent diameters at local positions, depending on the diameters of the first locking hole 41 and the second locking hole 42 .
[0055] like Figures 4 to 6 As shown, in some embodiments of the welding device 10 , the locking structure 4 further includes an isolation sleeve 44 , the isolation sleeve 44 is disposed in the second locking hole 42 , and the locking pin 43 passes through the isolation sleeve 44 .
[0056] It can be understood that the isolation sleeve 44 is used to fill the fitting gap between the hole wall of the second locking hole 42 and the locking pin 43 to further ensure the effective transmission of vibration. On the other hand, it is also used to isolate the locking pin 43 and the welding head 2 to avoid high-frequency vibration causing overheating and connection between the welding head 2 and the locking pin 43, thereby ensuring that the locking pin 43 can be disassembled and assembled smoothly, ensuring the convenience of maintenance.
[0057] like Figures 4 to 6 As shown, the connection between the locking pin 43 and the first locking hole 41 has at least the following embodiments: In the first embodiment, the locking pin 43 is threadedly connected to the first locking hole 41 .
[0058] It can be understood that the locking pin 43 is connected and fixed to the first locking hole 41 via threads, and the threaded fit has the advantages of being stable, reliable and anti-loosening, thereby improving the installation stability of the locking pin 43.
[0059] In the second embodiment, the locking pin 43 is engaged with the seat body 1 .
[0060] It can be understood that the locking pin 43 and the seat body 1 can be configured to be connected via a snap-fit structure in the prior art. The snap-fit structure has the advantage of quick disassembly and assembly, thereby improving the convenience of disassembly and assembly of the locking pin 43 .
[0061] like Figure 3As shown, in some embodiments of the welding device 10 , a welding ball portion 23 is disposed on each welding protrusion 21 , and the welding curved surface 22 is located on the surface of the welding ball portion 23 .
[0062] It can be understood that the shape of the welding ball portion 23 is a sphere or approximately a sphere, and the surface of the welding ball portion 23 is the welding curved surface 22 .
[0063] like Figure 3 and Figure 7 As shown, in some embodiments of the welding device 10 , a plurality of welding protrusions 21 are provided on the welding head 2 , and the welding protrusions 21 are axially symmetrically distributed about the central axis of the welding head 2 .
[0064] It can be understood that the number of welding protrusions 21 is configured to be multiple and evenly distributed on the welding head 2, so that the arrangement density of the welding protrusions 21 is very uniform, avoiding the problem of heat accumulation and overheating due to overly dense local arrangement, and improving the welding yield.
[0065] like Figure 3 and Figure 7 As shown, in some embodiments of the welding device 10 , the welding ball portion 23 is spherical or hemispherical.
[0066] It can be understood that the spherical or hemispherical surface does not have the corner positions during plane welding. The spherical or hemispherical surface will abut against the welding material to be welded with a curved surface, avoiding the problem of stress concentration during welding and improving the welding yield.
[0067] The battery welding equipment of the utility model comprises a welding device 10 and an ultrasonic driving component. The ultrasonic driving component is drivingly connected to a seat body 1 , and the ultrasonic driving component drives a welding head 2 to vibrate through the seat body 1 .
[0068] It can be understood that the battery welding device is used to weld the battery, for example, it can be used to weld the battery tab. The ultrasonic driver can be configured as an ultrasonic generator used in the prior art to generate ultrasonic vibration, and the vibration amount will be transmitted to the base 1, so that the vibration amount is further transmitted to the welding head 2 through the base 1, and then the welding head 2 can complete the welding when ultrasonically vibrating.
[0069] The implementation of this utility model has the following beneficial effects:
[0070] The utility model relates to a welding device and a battery welding equipment, wherein the battery welding equipment is driven and connected to the welding device. On the welding device, a detachable connection structure is provided to realize a detachable connection between a seat body and a welding head, so that the vulnerable welding head can be replaced separately without replacing the entire welding device, thereby reducing maintenance costs;
[0071] Furthermore, by providing a welding curved surface on the end of the welding protrusion, on the one hand, the contact area between the welding protrusion and the welding material to be welded is increased, and on the other hand, compared with the flat welding method, the welding curved surface greatly avoids the problem of stress concentration between the corner position and the welding material, thereby greatly reducing the occurrence rate of mold sticking, effectively improving the welding yield, and also avoiding sticking that affects the service life, thereby improving the durability of the welding device.
[0072] The scheme of the utility model has been described in detail above with reference to the accompanying drawings. In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments. Those skilled in the art should also know that the actions and modules involved in the specification are not necessarily required for the utility model. In addition, it can be understood that the steps in the method of the embodiment of the utility model can be adjusted in order, merged and deleted according to actual needs, and the modules in the device of the embodiment of the utility model can be merged, divided and deleted according to actual needs.
[0073] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.
Claims
1. A welding device, characterized in that: include: seat body; A welding head, wherein at least one welding protrusion is provided on the welding head, and a welding curved surface is provided on the welding protrusion, and the welding curved surface is used to abut against a welding material for welding; and A detachable connecting structure, wherein the welding head is connected to the base body via the detachable connecting structure.
2. The welding device according to claim 1, characterized in that: The detachable connection structure comprises a socket provided on the base, and the welding head is detachably inserted into the socket; or The detachable connection structure comprises a slot arranged on the seat body, and the welding head is detachably arranged in the slot.
3. The welding device according to claim 1, characterized in that: The detachable connection structure includes a first thread and a second thread; The first thread is arranged on the seat body, the second thread is arranged on the welding head, and the first thread is threadedly connected with the second thread.
4. The welding device according to any one of claims 1 to 3, characterized in that: The welding device also includes a locking structure; The locking structure comprises a first locking hole, a second locking hole and a locking pin; The first locking hole is arranged on the seat body, the second locking hole is arranged on the welding head, and the locking pin passes through the first locking hole and the second locking hole.
5. The welding device according to claim 4, characterized in that: The locking structure also includes an isolation sleeve, which is arranged in the second locking hole, and the locking pin passes through the isolation sleeve.
6. The welding device according to claim 4, characterized in that: The locking pin is threadedly connected to the first locking hole; or The locking pin is engaged with the seat body.
7. The welding device according to claim 1, characterized in that: A welding ball portion is disposed on each of the welding protrusions, and the welding curved surface is located on the surface of the welding ball portion.
8. The welding device according to claim 1 or 7, characterized in that: The welding head is provided with a plurality of welding protrusions, and the welding protrusions are distributed in an axisymmetric manner about the central axis of the welding head.
9. The welding device according to claim 7, characterized in that: The welding ball portion is spherical or hemispherical.
10. A battery welding device, characterized in that: The battery welding device comprises the welding device as described in any one of claims 1 to 9, wherein the battery welding equipment further comprises an ultrasonic driver, wherein the ultrasonic driver is drivingly connected to the seat body, and the ultrasonic driver drives the welding head to vibrate through the seat body.