Tab welding tool
By designing the electrode protection components and dust removal channels of the electrode welding fixture, the problem of poor welding effect caused by dust accumulation on the electrode was solved, and high-quality electrode welding and dust removal effects were achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-27
- Publication Date
- 2026-04-10
AI Technical Summary
Dust easily accumulates on the electrode tabs, resulting in poor welding performance.
A welding fixture for electrode tabs was designed, including an electrode tab protection component. The electrode tabs are pressed against the side and welded by laser welding through the opening. It also has a dust removal channel for blowing or sucking air to remove dust.
It improves the welding quality between the electrode tab and the target object, ensures the current flow capacity, and effectively removes fumes during the welding process, thus guaranteeing the welding effect.
Smart Images
Figure CN224102062U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to battery technology field especially relates to a tab welding tool. BACKGROUND
[0002] In the related art, the tab welding tool is used for welding the tab and the target welding object. However, dust is easily deposited on the tab, which leads to poor welding effect of the tab.
[0003] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present disclosure, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. SUMMARY
[0004] The utility model provides a tab welding tool, tab welding tool includes: tab protection subassembly, tab protection subassembly includes pressure tight piece, pressure tight piece includes for pressing the pressing side of tab, form on the pressing side first welding opening hole that passes through pressure tight piece,
[0005] Among them, the pressure tight piece is formed with a dust removal channel communicated with the side wall of the first welding opening hole.
[0006] On the one hand, the tab welding tool provided by the present application can press and flatten the tab by pressing the pressing side of the tab protection subassembly on the tab. The laser emitted by the laser welding device can act on the tab through the first welding opening hole, thereby welding the tab and the target welding object. On the other hand, the tab welding tool can also remove dust from the tab welding position through the dust removal channel. For example, the tab welding tool can blow or suck air to the welding position through the dust removal channel to achieve dust removal.
[0007] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF DRAWINGS
[0008] In order to better understand the present disclosure, reference can be made to the embodiments shown in the following drawings. The components in the drawings are not necessarily to scale, and related elements can be omitted in order to emphasize and clearly illustrate the technical features of the present disclosure. In addition, related elements or components can have different settings as known in the art. Furthermore, in the drawings, the same reference numerals represent the same or similar components in each drawing.
[0009] Among them:
[0010] Figure 1 is a structural schematic view of the tab protection subassembly in an exemplary embodiment of the tab welding tool of the present disclosure.
[0011] Figure 2 is a structural schematic view of the tab protection subassembly in an exemplary embodiment of the tab welding tool of the present disclosure.Figure 1 side view of the tab protection assembly shown;
[0012] Figure 3 for Figure 1 front view of the tab protection assembly shown;
[0013] Figure 4 for Figure 1 exploded view of the tab protection assembly shown;
[0014] Figure 5 for Figure 1 exploded view of the tab protection assembly from another perspective shown;
[0015] Figure 6 for Figure 1 sectional view of the tab protection assembly along the dotted line AA shown;
[0016] Figure 7 for Figure 3 sectional view of the tab protection assembly along the dotted line BB shown;
[0017] Figure 8 structure diagram of the fixing frame in an exemplary embodiment of the tab welding tooling of the present disclosure;
[0018] Figure 9 assembly diagram of the fixing frame and the tab protection assembly in an exemplary embodiment of the tab welding tooling of the present disclosure. DETAILED DESCRIPTION
[0019] The technical solutions in the example embodiments of the present disclosure will be described clearly and completely below in combination with the drawings in the example embodiments of the present disclosure. The example embodiments described herein are only for illustrative purposes, and are not intended to limit the protection scope of the present disclosure, so it should be understood that various modifications and changes can be made to the example embodiments without departing from the protection scope of the present disclosure.
[0020] In the description of the present disclosure, unless explicitly specified and limited, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance; the term "multiple" means two or more than two; the term "and / or" includes any combination and all combinations of one or more associated listed items. In particular, referring to "the" object or "one" object is also intended to represent one of the possible multiple such objects.
[0021] Unless otherwise defined or specified, the terms "connected", "fixed", and the like should be interpreted broadly, for example, "connected" can be fixed connection, or detachable connection, or integrally connected, or electrically connected, or signal connected; "connected" can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present disclosure can be understood according to the specific circumstances.
[0022] Further, in the description of the present disclosure, it should be understood that the orientation words such as "upper", "lower", "inner", "outer" and the like described in the example embodiments of the present disclosure are described with the angle shown in the drawings, and should not be understood as a limitation of the example embodiments of the present disclosure. It should also be understood that in the context, when referring to one element or feature connected to another element or feature "on", "under", or "inner", "outer", it can not only be directly connected to another element or feature "on", "under", or "inner", "outer", but also indirectly connected to another element or feature "on", "under", or "inner", "outer" through an intermediate element.
[0023] The battery cell includes a battery cell body, the battery cell body includes a diaphragm and two kinds of polar pieces with opposite polarity, i.e. a positive polar piece and a negative polar piece, and the battery cell body works by moving metal ions between the positive polar piece and the negative polar piece. The cycle process of the battery cell is the process that the metal ions move from the positive polar piece to the negative polar piece and then move from the negative polar piece to the positive polar piece. The battery cell also includes a tab, and the tab is electrically connected to the polar piece, wherein the positive tab is electrically connected to the positive polar piece, and the negative tab is electrically connected to the negative polar piece, and the battery cell realizes charging and discharging through the positive tab and the negative tab. The polar piece includes a current collector and an active material layer, and the active material layer is coated on the surface of the current collector. If the polar piece is a positive polar piece, the material of the current collector can be aluminum, and the material of the active material layer can be lithium cobaltate, lithium iron phosphate, ternary lithium, or lithium manganate, etc. If the polar piece is a negative polar piece, the material of the current collector can be copper, and the material of the active material layer can be carbon or silicon, etc. The diaphragm serves as an insulating layer to prevent the internal short circuit of the battery caused by the contact between the positive polar piece and the negative polar piece, and the diaphragm serves as a semi-permeable layer to prevent the passage of large molecules and allow the passage of small volume charged ions.
[0024] When the battery cell is electrically connected to the pole, the battery cell can be welded with a pin (i.e. an adapter piece) first, and then the pin is welded with the pole, thereby realizing the electrical connection between the battery cell and the pole.
[0025] As shown in FIG. 1, a battery cell is provided with a tab protection assembly. Figures 1-7 As shown in FIG. 1, a battery cell is provided with a tab protection assembly. Figure 1 FIG. 1 is a structural schematic diagram of a tab protection assembly in an example embodiment of a tab welding tool of the present disclosure. Figure 2 As shown in FIG. 1, a battery cell is provided with a tab protection assembly. Figure 1 FIG. 2 is a side view of the tab protection assembly shown in FIG. 1. Figure 3 FIG. 2 is a side view of the tab protection assembly shown in FIG. 1. Figure 1A front view of the tab protection assembly shown, Figure 4 As Figure 1 An exploded view of the tab protection assembly shown, Figure 5 As Figure 1 An exploded view of the tab protection assembly shown from another perspective, Figure 6 As Figure 1 A sectional view of the tab protection assembly shown along the dashed line AA, Figure 7 As Figure 1 A sectional view of the tab protection assembly shown along the dashed line BB.
[0026] In the example embodiment, the tab welding tool includes a tab protection assembly, the tab protection assembly includes a pressing member 1, the pressing member 1 includes a pressing side 11 for pressing against the tab, and the pressing side 11 is formed with a first welding opening 21 penetrating the pressing member 1; and a dust removal channel 3 is formed in the pressing member 1 and communicates with the side wall of the first welding opening 21.
[0027] On the one hand, the tab welding tool provided by the example embodiment can press the tab flat by the pressing side 11 of the tab protection assembly, and the laser emitted by the laser welding device can act on the tab through the first welding opening 21, so as to weld the tab and the target welding object, where the target welding object can be a adapter piece. The example embodiment can ensure the welding quality of the tab and the adapter piece, and further ensure the flow capacity between the tab and the adapter piece. On the other hand, the tab welding tool can also remove dust from the welding position of the tab through the dust removal channel 3, for example, the tab welding tool can blow or suck air to the welding position through the dust removal channel 3 to achieve dust removal. By removing the smoke and dust generated during welding in time, the influence of the smoke and dust on welding is avoided, and the welding quality of the tab and the adapter piece is further ensured.
[0028] In the example embodiment, as Figures 1-7 shown, the tab protection assembly can further include a protective member 4 and an elastic member 5, the protective member 4 is located on the side of the pressing member 1 away from the pressing side 11, the protective member 4 is formed with a second welding opening 22, and the opening of the second welding opening 22 is arranged opposite to the opening of the first welding opening 21; and the elastic member 5 is arranged between the protective member 4 and the pressing member 1, and the elastic member 5 has an elastic extension amount in the distribution direction of the protective member 4 and the pressing member 1. The protective member 4 can press the pressing member 1 through the elastic member 5, so that the pressing member 1 is pressed on the tab, and the elastic member 5 can play a buffering role, so that the setting can control the force of the pressing member 1 on the tab, and reduce the risk of damage to the tab.
[0029] In the example embodiment, as Figures 1-7As shown in the figure, the dust removal channel 3 includes a first extension section 31 communicating with the first welding opening 21. The extension direction of the first extension section 31 intersects the extension direction of the first welding opening 21, and the included angle a between the extension direction of the first extension section 31 and the extension direction of the first welding opening 21 is greater than 0° and less than 90°, for example, the included angle a can be 10°, 20°, 30°, 40°, 50°, 60°, 70°, 80°, 90°, etc. The extension direction of the first extension section 31 is inclined in the example embodiment, which can reduce the resistance between the dust removal channel 3 and the first welding opening 21, thereby improving the dust removal effect.
[0030] In the example embodiment, as shown in the figure, Figures 1-7 The included angle between the extension direction of the first extension section 31 and the extension direction of the first welding opening 21 can be preferably greater than or equal to 30° and less than or equal to 70°, for example, the angle of the included angle a can be 30°, 40°, 50°, 60°, 70°, etc.
[0031] In the example embodiment, as shown in the figure, Figures 1-7 The opening area of the first extension section 31 gradually increases from the end away from the first welding opening 21 to the end close to the first welding opening 21. For example, as shown in the figure, Figure 7 The width of the first extension section 31 can gradually increase from the end away from the first welding opening 21 to the end close to the first welding opening 21. The horn-shaped first extension section 31 can make the airflow direction acting on the tab more dispersed, thereby achieving better dust removal effect.
[0032] In the example embodiment, as shown in the figure, Figures 1-7 The first opening 311 of the dust removal channel 3 is located on the side wall of the first welding opening 21, and the second opening 312 of the dust removal channel 3 is located on the side surface 11 of the pressing piece 1 away from the pressing side surface 11; the tab protection assembly can further include: an adapter 6 located between the protective piece 4 and the pressing piece 1, the adapter 6 forms an adapter air duct 61 inside, the first opening 611 of the adapter air duct 61 is communicated with the second opening of the dust removal channel 3, and the second opening 612 of the adapter air duct 61 is located on one side of the adapter 6 in the first direction Y. The distribution direction of the protective piece 4 and the pressing piece 1 intersects the first direction Y. This setting can facilitate the external device to ventilate to the dust removal channel 3 through the second opening 612 of the adapter air duct 61.
[0033] In the example embodiment, as shown in the figure, Figures 1-7As shown, the edge of the protection piece 4 facing the compression piece 1 is formed with a notch 41, the notch 41 has a bottom wall 411 facing away from the compression piece 1, the adapter 6 is at least partially matched and arranged in the notch 41, and when the elastic piece 5 is in a natural stretched state, the adapter 6 and the bottom wall of the notch 41 are spaced apart by a preset distance. The adapter 6 has a certain limiting effect. When the protection piece 4 is extruded to the side of the compression piece 1, the elastic piece 5 contracts, the distance between the adapter 6 and the bottom wall 411 of the notch 41 decreases, and the adapter 6 can limit the further movement of the protection piece 4 to the side of the compression piece 1, thereby limiting the maximum force of the compression piece 1 on the tab.
[0034] In the example embodiment of the present disclosure, as shown in Figures 1-7 , the side of the compression piece 1 facing the protection piece 4 is formed with a first fixing hole 71, and the side of the protection piece 4 facing the compression piece 1 is formed with a second fixing hole 72; the tab protection assembly further comprises a fixing rod 8 arranged in the opposite first fixing hole 71 and second fixing hole 72, and the elastic piece 5 can comprise a spring arranged around the fixing rod 8. The fixing rod 8 has a certain free space inside the first fixing hole 71 and / or the second fixing hole 72 along its extension direction, and the protection piece 4 and the compression piece 1 can move relatively.
[0035] In the example embodiment of the present disclosure, as shown in Figures 1-7 , the side of the compression piece 1 facing the protection piece 4 is formed with a first recess 91, and the side of the protection piece 4 facing the compression piece 1 is formed with a second recess 92, and the first welding opening 21 is located at the bottom of the first recess 91, and the second recess 92 is located in the area outside the second welding opening 22; the tab protection assembly further comprises a first buffer 101 and a second buffer 102, the first buffer 101 is located between the protection piece 4 and the compression piece 1, and the first buffer 101 is at least partially matched and arranged in the first recess 91, and the first buffer 101 is formed with a third welding opening 23 opposite the first welding opening 21; the second buffer 102 is located between the first buffer 101 and the protection piece 4, and the second buffer 102 is at least partially matched and arranged in the second recess 92. The first buffer 101 and the second buffer 102 can be used to conduct the interaction force between the protection piece 4 and the compression piece 1, and the laser emitted by the laser welding device can pass through the second welding opening 22, the third welding opening 23 and the first welding opening 21 in sequence to act on the tab.
[0036] As shown in Figure 8 , 9 , Figure 8 is a structural schematic view of the fixing frame in an example embodiment of the tab welding tool of the present disclosure, Figure 9An assembly view of the fixing frame and the tab protection assembly in an exemplary embodiment of the tab welding tool of the present disclosure. The tab welding tool further comprises: a fixing frame 103, a laser welding device (not shown), the fixing frame 103 is used for fixing a tab 104 and a target welding object 105; the laser emitted by the laser welding device can pass through the second welding opening 22, the third welding opening 23 and the first welding opening 21 in sequence to act on the tab, so as to weld the tab and the target welding object. Wherein, the tab welding tool can be used for welding the tabs of the side-out stacked cell and the top cover pins.
[0037] Other embodiments of the present disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the features of the present disclosure as disclosed herein. It is intended that the present disclosure cover any and all variations of the present disclosure including those variations that are now deemed to fall within the general principles of the present disclosure and including those variations that are deemed to fall within the common general knowledge of the art. The specification and examples are to be considered exemplary only, with the true scope and spirit of the present disclosure being indicated by the claims.
[0038] The drawings in the present disclosure only involve the structures related to the present disclosure, and other structures can refer to the general design. The embodiments of the present disclosure and the features in the embodiments can be combined with each other to obtain new embodiments without conflict. It should be understood by those skilled in the art that the technical solutions of the present disclosure can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present disclosure, and all should be covered in the scope of the claims of the present disclosure.
[0039] It should be understood that the present disclosure is not limited to the precise structures described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is only limited by the appended claims.
Claims
1. A tab welding tool, characterized by, The tab welding tool comprises a tab protection assembly, the tab protection assembly comprises a pressing piece (1), the pressing piece (1) comprises a pressing side (11) for pressing the tab, and a first welding opening (21) penetrating through the pressing piece (1) is formed on the pressing side (11); Wherein, a dust removal channel (3) is formed inside the pressing piece (1) and is communicated with the side wall of the first welding opening (21); The tab protection assembly further comprises: A protective piece (4) is located on the side of the pressing piece (1) away from the pressing side (11), a second welding opening (22) is formed on the protective piece (4), and the opening of the second welding opening (22) is oppositely arranged with the opening of the first welding opening (21); An elastic piece (5) is arranged between the protective piece (4) and the pressing piece (1), and the elastic piece (5) has an elastic extension amount in the distribution direction of the protective piece (4) and the pressing piece (1); A first groove (91) is formed on the side of the pressing piece (1) facing the protective piece (4), and a second groove (92) is formed on the side of the protective piece (4) facing the pressing piece (1); The tab protection assembly further comprises: A first buffer piece (101) is located between the protective piece (4) and the pressing piece (1), and the first buffer piece (101) is at least partially matched and arranged in the first groove (91); A second buffer piece (102) is located between the first buffer piece (101) and the protective piece (4), and the second buffer piece (102) is at least partially matched and arranged in the second groove (92).
2. The tab welding tool of claim 1, wherein The dust removal channel (3) comprises a first extension section (31) communicated with the first welding opening (21), the extension direction of the first extension section (31) intersects with the extension direction of the first welding opening (21), and the included angle between the extension direction of the first extension section (31) and the extension direction of the first welding opening (21) is greater than 0° and less than 90°.
3. The tab welding tool of claim 2, wherein The included angle between the extension direction of the first extension section (31) and the extension direction of the first welding opening (21) is greater than or equal to 30° and less than or equal to 70°.
4. The tab welding tool of claim 2, wherein The opening area of the first extension section (31) gradually increases from the end away from the first welding opening (21) to the end close to the first welding opening (21).
5. The tab welding tool of claim 1, wherein The first opening (311) of the dust removal channel (3) is located on the side wall of the first welding opening (21), and the second opening (312) of the dust removal channel (3) is located on the side (11) of the pressing piece (1) away from the pressing side (11); The tab protection assembly further comprises: An adapter (6) is located between the protective member (4) and the pressing member (1), and an adapter air passage (61) is formed in the adapter (6), a first opening (611) of the adapter air passage (61) is communicated with a second opening of the dust removal channel (3), a second opening (612) of the adapter air passage (61) is located on one side of the adapter (6) in a first direction (Y), and a distribution direction of the protective member (4) and the pressing member (1) intersects the first direction.
6. The tab welding tool of claim 5, wherein An edge of the protective member (4) facing the pressing member (1) is formed with a notch (41) having a bottom wall (411) away from the pressing member (1), the adapter (6) is at least partially matched and arranged in the notch (41), and when the elastic member (5) is in a natural stretching state, the adapter (6) and the bottom wall (411) of the notch (41) are spaced apart by a preset distance.
7. The tab welding tool of claim 1, wherein The pressing member (1) is formed with a first fixing hole (71) on a side facing the protective member (4), and the protective member (4) is formed with a second fixing hole (72) on a side facing the pressing member (1). The tab protection assembly further comprises: A fixing rod (8) is arranged in the opposite first fixing hole (71) and second fixing hole (72), the elastic member (5) comprises a spring, and the spring is arranged around the fixing rod (8).
8. The tab welding tool of claim 1, wherein, The first welding opening (21) is located at the bottom of the first groove (91), and the second groove (92) is located in a region other than the second welding opening (22). A third welding opening (23) opposite to the first welding opening (21) is formed on the first buffer member (101).
9. The tab welding tool of claim 1, wherein, The tab welding tool further comprises: A fixing frame is used to fix the tab and the target welding object; A laser welding device is used to weld the tab and the target welding object through the first welding opening (21).