CN213857824U

CN213857824U - Flow collecting disc welding fixture

Info

Publication number: CN213857824U
Application number: CN202022571699.0U
Authority: CN
Inventors: 冉昌林; 程从贵; 梅亮; 成瑞珍
Original assignee: Wuhan Yifi Laser Corp Ltd
Current assignee: Wuhan Yifi Laser Corp Ltd
Priority date: 2020-11-09
Filing date: 2020-11-09
Publication date: 2021-08-03
Anticipated expiration: 2030-11-09

Abstract

The embodiment of the utility model provides a current collecting dish welds clamping apparatus is provided to current collecting dish welding technical field. This current collector dish welding jig includes material carrier and positioning seat, material carrier install in the positioning seat, the material carrier is equipped with electric core installation department and constant head tank, electric core installation department is used for the location to treat welding electric core, the constant head tank is used for the location to treat welding electrode ear, electric core installation department is located one side of constant head tank is so that treat welding electrode ear the current collector dish with treat welding electrode core's welding end face and aim at. The current collecting disc welding fixture provided by the embodiment of the utility model can be used for loading the cell to be welded and the tab to be welded simultaneously and completing the positioning alignment of the cell and the tab to be welded, thereby simplifying the structure of the welding fixture and being convenient to operate; after the welding device is installed on the current collecting plate welding equipment, the welding device can be directly conveyed to a welding station to be welded by a welding mechanism, and an additional alignment mechanism is not needed to align the battery core to be welded with the current collecting plate.

Description

Flow collecting disc welding fixture

Technical Field

The utility model relates to a current collection dish welding technology field especially relates to a current collection dish welds dress anchor clamps.

Background

The power lithium battery is a core component of the new energy industry, and the technical development and improvement of the power lithium battery are concerned. In the production process of the lithium ion battery, the battery core which is kneaded flat and put into the shell needs to be welded with the current collecting disc. In the prior art, the current collecting discs are welded in a manual mode, wherein the current collecting discs are firstly loaded one by one manually and then are placed on an electric welding machine to be welded one by one manually. Consume a large amount of manpowers, the cost of labor is high, work efficiency is low, is difficult to satisfy the production demand.

At present, some semi-automatic current collecting plate welding equipment manually feeds a battery cell to be welded and a tab to be welded to a current collecting plate welding tool assembly respectively, and then uses an automatic welding device for welding. However, the conventional current collector plate welding tool respectively fixes the electric core to be welded and the collector plate to be welded through two separated positioning devices, and has a complex structure and inconvenient operation; and before welding, the cell to be welded and the current collecting disc of the tab to be welded need to be aligned by means of a moving mechanism and an alignment structure.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a current collecting plate welding jig for solve prior art's current collecting plate welding jig and adopt two detached positioner to fix a position respectively and treat welding electric core and treat welding electrode ear, the structure all comparatively complicated problem with the operation.

The embodiment of the utility model provides a current collecting disc welding jig, including material carrier and positioning seat, material carrier fixed mounting in the positioning seat, the material carrier is equipped with electric core installation department and constant head tank, electric core installation department is used for the location to treat welding electric core, the constant head tank is used for the location to treat welding electrode ear, electric core installation department is located one side of constant head tank makes treat welding electrode ear current collecting disc with treat welding electrode core's welding end face and aim at.

According to the utility model discloses a current collector welds dress anchor clamps, material carrier demountable installation in the positioning seat.

According to the utility model discloses a current collection dish welding jig still includes the briquetting, the briquetting install in the material carrier, the briquetting is used for bulldozing what hold in the constant head tank treats welding lug with the correction with injecing treat welding lug's position.

According to the utility model discloses a current collector welds dress anchor clamps, the briquetting pass through reset spring with material carrier elastic connection.

According to the utility model discloses a current collector welds dress anchor clamps, the material carrier is equipped with two the constant head tank and two the briquetting, two through compression spring elastic connection between the briquetting.

According to the utility model discloses a current collector welds dress anchor clamps, elastic base is installed to the electricity core installation department.

According to the utility model discloses a current collector welding jig, the electric core installation department is for offering the electric core constant head tank of material carrier, the shape of electric core constant head tank and the appearance looks adaptation of treating welding electric core.

According to the utility model discloses a current collector welding jig, the electric core setting element is installed to the material carrier, the material carrier structure has the arc-shaped groove of extending along vertical direction, the radius of arc-shaped groove is the same with cylindrical the radius of treating welding electric core, the electric core setting element be used for with treat welding electric core compress tightly in the arc-shaped groove.

According to the utility model discloses a current collection dish welding jig, the positioning seat includes casting die and continuous bottom plate and riser, the locating piece is installed respectively to the both sides of bottom plate, the material carrier be located riser and two in the acupuncture point that the locating piece formed and pass through the casting die is pressed and is located the riser.

According to the utility model discloses a current collector welds dress anchor clamps, the material carrier includes fixed connection's electric core carrier and current collector locating piece, the electric core installation department is located the electric core carrier, the constant head tank is seted up in the current collector locating piece, the electric core carrier with the contact surface of current collector locating piece is equipped with location structure.

The embodiment of the utility model provides a current collecting tray welding jig, the utility model provides a current collecting tray welding jig can be used to load simultaneously and treat welding electric core and treat welding electrode ear and accomplish the positioning alignment of both, has simplified the structure of current collecting tray welding frock, convenient operation; after the welding mechanism is installed on a material conveying mechanism of the current collecting plate welding equipment, the welding mechanism can be directly conveyed to a welding station for welding, and an electric core to be welded and a current collecting plate are not required to be aligned by an additional alignment mechanism.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a flow collecting tray welding fixture according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a collector welding jig according to another embodiment of the present invention;

fig. 3 is a schematic view of the assembly structure of the current collecting plate positioning block and the pressing block in the embodiment of the present invention.

Reference numerals:

11. a battery cell carrier; 111. a battery cell positioning groove; 112. an elastic base; 113. a battery cell positioning piece; 115. a first arc-shaped groove; 116. a second circular arc groove; 117. a handle; 12. a current collecting disc positioning block; 1211. positioning a groove; 1212. an opening; 1213. a notch; 125. briquetting; 127. a compression spring; 128. positioning the boss; 13. positioning seats; 131. positioning blocks; 132. pressing parts; 133. a base plate; 134. a vertical plate; 137. mounting holes; 51. the battery cell to be welded; 52. a current collecting plate; 53. a cover plate; 531. a pole piece boss; 6. material detection device.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the embodiments of the present invention, it should be noted that the terms "first" and "second" are used for clearly indicating the numbering of the product parts and do not represent any substantial difference unless explicitly stated or limited otherwise. "to those skilled in the art, the specific meaning of the above terms in the embodiments of the present invention can be understood according to specific situations.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected" and "connected" are to be construed broadly, and may for example be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The following describes the current collecting tray welding jig according to an embodiment of the present invention with reference to fig. 1 to 3. Fig. 1 is a schematic structural view of a collector welding fixture according to an embodiment of the present invention. The collecting tray welding fixture comprises a material carrier and a positioning seat 13, wherein the material carrier is positioned and installed on the positioning seat 13, the positioning seat 13 is installed at a moving end of a conveying mechanism of a welding machine table, and the conveying mechanism conveys the positioning seat 13 to a welding station to enable a collecting tray on the material carrier to be aligned with an appointed welding station. The material carrier is provided with a cell installation part and a positioning groove 1211, the cell installation part is used for positioning the cell 51 to be welded, the positioning groove 1211 is used for positioning the tab to be welded, and the cell installation part is located on one side of the positioning groove 1211 so that the current collecting disc 52 of the tab to be welded is aligned with the welding end face of the cell 51 to be welded. Wherein, the tab to be welded comprises a current collecting disc 52, a cover plate 53 and a flow deflector connecting the current collecting disc 52 and the cover plate 53. The positioning groove 1211 may be formed by enclosing a plurality of positioning blocks protruding from the material carrier, or may be a groove structure formed on the surface of the material carrier, as long as the cover plate 53 to be welded with the tab can be positioned therein, and the specific form of the positioning groove is not particularly limited in this embodiment.

Specifically, as shown in fig. 1, the positioning groove 1211 is used to position the cover plate 53 to be welded with the tab. As shown in fig. 3, an opening 1212 is provided at a side of the positioning groove 1211 close to the cell 51 to be welded, a width of the opening 1212 is not smaller than a width of the flow deflector of the tab, and after the cover plate 53 of the tab to be welded is positioned in the positioning groove 1211, the flow deflector protrudes from the opening 1212 so that the current collecting plate 52 is aligned with a welding end face of the cell 51 to be welded. Furthermore, a notch 1213 is formed on one side of the current collecting plate positioning block 12 close to the positioning slot 1211 to form a material taking avoiding position, so that a part of the cover plate 53 is located outside the notch 1213, thereby facilitating manual loading and unloading. Under the condition that the positioning of the to-be-welded battery cell 51 is accurate, the center of the positioning groove 1211 and the center of the welding end face of the to-be-welded battery cell 51 are located on the same straight line, so that when the cover plate 53 of the to-be-welded tab is positioned in the positioning groove 1211, the current collecting plate 52 is positioned on the welding end face of the to-be-welded battery cell 51.

The current collecting plate welding fixture provided by the embodiment of the utility model is applied to semi-automatic current collecting plate welding equipment, can load the cell to be welded and the tab to be welded simultaneously and complete the positioning alignment of the two, simplifies the structure of the current collecting plate welding fixture and is convenient to operate; after the welding fixture is installed on the material conveying mechanism of the current collecting disc welding equipment, the conveying mechanism can directly convey the welding fixture to a specified welding position according to a set route so as to be used for welding by the welding mechanism, and an additional alignment mechanism is not needed for aligning the to-be-welded battery cell and the current collecting disc, so that the structure and the operation process of the current collecting disc welding equipment are simplified under the condition that certain production requirements are met.

Wherein, the material carrier can be fixedly arranged on the positioning seat 13; the material carrier can also be detachably mounted on the positioning seat 13, the operator can take the material carrier out of the positioning seat 13, the battery core and the tab are loaded outside the welding machine, and the material carrier is positioned on the positioning seat 13 after the loading is completed. Further, a handle 117 is further disposed on the material carrier.

As shown in fig. 1, in the embodiment of the present invention, the positioning seat 13 includes a pressing member 132, and a bottom plate 133 and a vertical plate 134 connected to each other, positioning blocks 131 are respectively installed on two sides of the bottom plate 133, and the material carrier is positioned in an acupuncture point formed by the vertical plate 134 and the two positioning blocks 131 and pressed on the vertical plate 134 through the pressing member 132. Thereby realized the relative positioning seat 13 of material carrier's dismantlement connection promptly, limited the relative positioning seat 13's of material carrier position again. The compression element 132 may be a snap-action clamp that compresses the material carrier against the riser 134. The compression element 132 may be a snap-action clamp that compresses the material carrier against the riser 134.

On the basis of the above embodiment, as shown in fig. 1, the material carrier is provided with a cell installation portion, the elastic base 112 is installed on the cell installation portion, and the cell 51 to be welded is borne on the elastic base 112. The elastic base 112 includes a casing and a compression spring, one end of the compression spring is fixedly connected to the bottom of the cell positioning slot 111, and the other end of the compression spring is fixedly connected to the casing. After the cell 51 to be welded is mounted on the elastic base 112, the end face of the cell 51 contacting with the current collecting disc 52 is higher than the plane where the cover plate of the current collecting disc 52 is located, that is, the cell 51 to be welded may push up the tab and make it bend with a certain radian, so as to ensure that when the pressing mechanism presses the current collecting disc 52, the relative position of the current collecting disc 52 and the cell end face will not generate a large deviation to affect the welding quality.

As shown in fig. 1, in an embodiment of the present invention, the battery cell mounting portion is a battery cell positioning groove 111 provided on the material carrier, and the battery cell 51 to be welded is loaded on the battery cell positioning groove 111, and the shape of the battery cell positioning groove 111 is adapted to the shape of the battery cell 51 to be welded. For example, if the cell 51 to be welded is a cylindrical cell, the cell positioning slot 111 is a cylindrical slot matched with the cylindrical cell, one end of the cell 51 to be welded is located in the cell positioning slot 111, and the other end is aligned with the current collecting plate 52. Further, the material carrier takes the material at the cell positioning groove 111 to avoid the position, so that the part of the cell 51 to be welded is located outside the cell positioning groove 111, thereby facilitating the assembly and disassembly of the cell by an operator.

When the tab has been welded to the opposite end of the welding end of the cell 51 to be welded, the cell mounting portion needs to have a sufficient space for placing the cell to avoid damage to the welded tab. To this end, as shown in fig. 2, the utility model discloses still another embodiment current collector welds the schematic structure of dress anchor clamps, the utility model discloses an in the embodiment, the first arc-shaped groove 115 of electric core installation department for locating the material carrier and extending along vertical direction, the material carrier is installed electric core setting element 113, will treat through electric core setting element 113 that welding electric core 51 compresses tightly in first arc-shaped groove 115. The radius of the first arc-shaped groove 115 is the same as the radius of the cylindrical to-be-welded cell 51. When the first arc-shaped groove 115 is machined, it is necessary to ensure that the arc surface of the first arc-shaped groove 115 and the side surface of the cylindrical to-be-welded electrical core 51 have high-precision coaxiality. The arrangement is to avoid that the radius of the first arc-shaped groove 115 is too small to cause the cylindrical cell 51 to be welded to be difficult to completely fit with the first arc-shaped groove 115, or the radius of the first arc-shaped groove 115 is too large to cause the cylindrical cell 51 to be welded to roll in the first arc-shaped groove 115, thereby affecting the positioning accuracy of the current collecting disc 52 and the cylindrical cell 51 to be welded. In this embodiment, the battery cell positioning element 113 and the first arc-shaped groove 115 may be used to mount and position the battery cell 51 to be welded on the material carrier. In this way, the cell 51 to be welded can be loaded and removed from the opening side of the first circular-arc groove 115, so as to avoid interference collision between the welded tab of the cell 51 to be welded and the material carrier. The battery cell positioning element 113 may be an elastic stop block or a quick clamp. Of course, the material carrier in this embodiment may also be used to load the to-be-welded battery cell with no tab welded at the bottom.

It should be noted that, when the battery cell installation portion is the battery cell positioning groove 111, the battery cell positioning element 113 may also be installed on the material carrier to compress and position the to-be-welded battery cell 51 loaded in the battery cell positioning groove 111, so as to prevent the battery cell positioning groove 111 from shaking. As shown in fig. 1, a second circular-arc groove 116 extending in the vertical direction is formed on one side of the material carrier located in the cell positioning groove 111, and the process requirement for processing the second circular-arc groove 116 is the same as that for processing the first circular-arc groove 115 in the above embodiment. The cell positioning element 113 compresses the cell 51 to be welded to the second circular-arc groove 116.

In the embodiment of the utility model, the material carrier can be an integrated structure; the welding device also comprises a battery cell carrier 11 and a current collecting disc positioning block 12 which are fixedly connected, wherein the battery cell 51 to be welded is positioned and loaded on the battery cell carrier 11, and the positioning groove 1211 is arranged on the current collecting disc positioning block 12. The material carrier can be made of metal materials so as to improve the strength and the service life of the welding clamp. In order to avoid damage to the battery core and the current collecting disc caused by the metal material, the contact part of the material carrier and the battery core 51 to be welded and the tab to be welded needs to be subjected to insulation treatment, such as coating teflon; alternatively, the material carrier structure is made of an insulating material such as PEEK or nylon.

Considering the insulativity between the material carrier and the material and the light weight requirement of the clamp, the material carrier can be made of engineering plastics. In consideration of the manufacturing cost and the processing precision requirement of the material carrier, the battery cell carrier 11 and the current collecting disc positioning block 12 are respectively made of different engineering plastics. If the cell carrier 11 is made of nylon material, and the current collecting plate positioning block 12 is made of PEEK material with better performance. The current collecting plate positioning block 12 made of engineering plastics can also play a role in preventing the tabs from being scratched or damaged, and can reduce the weight of the whole welding fixture and reduce the labor intensity of workers.

The utility model discloses an in the embodiment, electric core carrier 11 and current collecting plate locating piece 12 fixed connection, current collecting plate locating piece 12 is equipped with location structure with electric core carrier 11's contact surface. Specifically, as shown in fig. 3, the positioning structure includes a positioning boss 128 disposed on the current collecting plate positioning block 12 and a positioning groove disposed on the cell carrier 11; or the positioning structure comprises a positioning groove arranged on the current collecting plate positioning block 12 and a positioning boss arranged on the battery cell carrier 11. When the battery pack is installed, the current collecting disc positioning block 12 and the battery cell carrier 11 are positioned through the positioning structure, and then the current collecting disc positioning block 12 and the battery cell carrier 11 are connected through screws. Therefore, the assembly tolerance of the current collecting plate positioning block 12 and the battery cell carrier 11 can be reduced, and the problem of increased positioning tolerance caused by long-term use of the connecting screw is avoided.

In practice, there is a small amount of deflection of the cover plate 53 in the detents 1211 due to the fitting clearance between the detents 1211 and the side edge of the cover plate 53. There is also a gap between the flow guiding plate of the tab and the opening 1212, and especially when the circular cover plate 53 is positioned in the circular positioning slot 1211, there may also be a small-amplitude deflection of the cover plate 53, which causes a small-amplitude offset of the current collecting plate 52 relative to the welding surface of the to-be-welded electric core 51, thereby affecting the positioning accuracy of the current collecting plate 52 and the designated welding position. To this end, as shown in fig. 1 and fig. 2, in the embodiment of the present invention, the welding fixture further includes a pressing block 125, the pressing block 125 is installed on the material carrier, and the pressing block 125 is used for pushing and pressing the tab to be welded accommodated in the positioning groove 1211 to correct and limit the position of the tab to be welded. Specifically, the cover plate 53 to which the tab is to be welded is positioned in the positioning groove 1211. The position of the current collecting disc 52 relative to the welding end face of the cell 51 to be welded is corrected by pressing the pressing block 125 against the pole piece boss 531 on the cover plate 53, so that the positioning accuracy of the current collecting disc 52 and the cell 51 to be welded is improved. Fig. 3 is a schematic view of an assembly structure of the current collecting plate positioning block and the pressing block according to an embodiment of the present invention.

Wherein, the pressing block 125 is made of engineering plastics. The cover plate 53 is provided with a pole piece boss 531, and the position of the cover plate 53 is corrected by pushing the side surface of the pole piece boss 531 with the pressing block 125. The briquette 125 may be slidably or rotatably coupled to the material carrier. For example, the collecting tray positioning block 12 is provided with a guide rail, and the pressing block 125 is slidably connected with the guide rail; or, the collecting tray positioning block 12 is provided with a rotating shaft, and the pressing block 125 is rotatably connected with the rotating shaft. To push the side surface of the pole piece boss 531 by sliding the pressing piece 125 or rotating the pressing piece 125.

In the embodiment, the pressing block 125 is connected to the current collecting plate positioning block 12 of the material carrier as an example, and it is needless to say that it may be connected to other components of the material carrier, and the embodiment of the present invention is not limited thereto. One end of the pressing block 125 is elastically connected with the current collecting disc positioning block 12 through a return spring, and the elastic restoring force generated by the other end in the process of removing the pressing force of the return spring drives the pressing block 125 to push and press the pole piece boss 531. The side surface of the pressing block 125 abuts against the side surface of the pole piece boss 531, so that the position of the cover plate 53 is corrected. The return spring may be a compression spring or a torsion spring.

When the return spring is a compression spring, the collecting tray positioning block 12 has an end plate (not shown in the figure) fixed in the sliding direction of the pressing block 125, a first guide rod is disposed between the pressing block 125 and the end plate, and the compression spring is sleeved on the first guide rod. For example, one end of the first guide rod is connected with the pressing block 125 by screw threads, and the other end of the first guide rod is movably inserted into the through hole on the end plate, so that the working length of the first guide rod can be adjusted by adjusting the length of the screw connection between the first guide rod and the pressing block 125. Further, an end block (not shown) is fixed to the collecting tray positioning block 12 in the sliding direction of the pressing block 125, and the end block may be integrally formed with the collecting tray positioning block 12. The end block is located on the side of the pressing block 125 far away from the end plate, a magnet or a magnetic metal member such as a screw is embedded in the end block, a magnet is embedded in the side of the pressing block 125 close to the end block, and the magnet on the end block and the magnet on the pressing block 125 attract each other. When the pressing piece 125 is released, the pressing piece 125 presses the pole piece boss 531 by the attracting force of the magnet and the restoring force of the compression spring. For example, the two ends of the first guide rod are fixedly connected to the end block and the end plate, respectively, and the pressing block 125 and the compression spring are movably sleeved on the guide rod.

When the return spring is a torsion spring, the collecting tray positioning block 12 is provided with a rotating shaft, the torsion spring is sleeved on the rotating shaft, and two ends of the torsion spring are respectively fixedly connected with the collecting tray positioning block 12 and the pressing block 125. When the tab to be welded is loaded, the pressing block 125 is manually pushed open to be away from the positioning groove 1211, the return spring accumulates pressing force, the cover plate 53 is positioned in the positioning groove 1211, then the pressing block 125 is released, and the pressing block 125 pushes the pole piece boss 531 until the pressing block abuts against the side face of the pole piece boss 531 under the elastic restoring force of the return spring. When the return spring abuts against the pole piece boss 531, the return spring can have a smaller compression amount, so that the position of the cover plate 53 is kept unchanged in the process of material transportation and current collecting disc welding, and the accurate positioning of the current collecting disc 52 is ensured.

In order to improve the welding efficiency, the embodiment of the present invention provides a welding fixture, which can be used to simultaneously load two sets of cells 51 to be welded and the tabs to be welded. Specifically, as shown in fig. 1, the material carrier is provided with two battery cell installation portions and two positioning grooves 1211, specifically, the battery cell installation portions are arranged on the battery cell carrier 11, the positioning grooves 1211 are arranged on the current collecting plate positioning block 12, and the two positioning grooves 1211 respectively correspond to the two pressing blocks 125 and are respectively used for correcting the cover plates 53 in the two positioning grooves 1211. Therefore, the current collecting plate welding of the two battery cores is completed through one-time loading.

Specifically, the two pressing blocks 125 are installed between the two positioning slots 1211 and can move away from or close to each other along the central connecting line of the two positioning slots 1211 to push or release the side surface of the pole piece boss 531. The two pressing blocks 125 can be elastically connected with the end plate on the material carrier by a compression spring, and at the moment, the end plate should be perpendicular to the central connecting line of the two positioning grooves 1211; alternatively, as shown in fig. 3, the two pressing pieces 125 are elastically connected by a compression spring 127 to save an installation space.

When the two pressing blocks 125 are elastically connected through the compression spring 127, specifically, a second guide rod is arranged between the two pressing blocks 125, the compression spring 127 is sleeved on the second guide rod, one end of the second guide rod is in threaded connection with one of the pressing blocks, and the other end of the second guide rod movably penetrates through a through hole in the other pressing block. When the pole pieces to be welded are loaded, the two pressing blocks 125 are manually shifted to be close to the middle to compress the compression spring 127, the two pole lugs to be welded are loaded in the two positioning grooves 1211 respectively, then the pressing blocks 125 are released, and the two pressing blocks 125 push and press the side surfaces of the pole lug bosses 531 of the two pole lugs under the elastic restoring force of the compression spring 127 and abut against the side surfaces. The embodiment of the utility model provides a welding jig is still including material detection device 6, and there is material detection device 6 to be used for detecting whether to treat that welding electricity core 51 loads in the material carrier, has material detection device 6 and conveying mechanism communication connection. Specifically, the positioning block 131 of the positioning seat 13 is provided with a mounting hole 137, for example, the mounting hole 137 is disposed on the positioning block on both sides of the positioning seat 13, the material detection device 6 is mounted in the mounting hole 137, and the position of the battery cell carrier 11 corresponding to the mounting hole 137 is provided with a through hole. A detection signal of the material detection device 6 passes through the through hole of the cell carrier 11 to detect whether a cell is loaded in the cell carrier 11. With this structure, when the battery cell 51 to be welded is loaded on the cell carrier 11 and the cell carrier 11 is also loaded on the positioning seat 13, the welding fixture is considered to be loaded on the conveying mechanism, and the conveying mechanism starts conveying. The material detecting device 6 may be a photoelectric switch, a distance sensor, or the like, and the specific type thereof is not particularly limited.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. The utility model provides a current collecting disc welding jig, its characterized in that, includes material carrier and positioning seat, material carrier fixed mounting in the positioning seat, the material carrier is equipped with electric core installation department and constant head tank, electric core installation department is used for the location to treat welding electric core, the constant head tank is used for the location to treat welding electrode ear, electric core installation department is located one side of constant head tank so that treat welding electrode ear the current collecting disc with treat welding electrode core's welding end face and aim at.

2. The collector plate weld fixture of claim 1, wherein the material carrier is removably mounted to the positioning seat.

3. The collecting tray welding jig according to claim 1, further comprising a pressing block mounted to the material carrier, the pressing block being adapted to push against the to-be-welded tab received in the positioning groove to correct and define the position of the to-be-welded tab.

4. The assembly tray welding jig according to claim 3, wherein the pressing block is elastically connected to the material carrier by a return spring.

5. The assembly disc welding fixture according to claim 3, wherein said material carrier is provided with two said positioning slots and two said pressing blocks, and said two pressing blocks are elastically connected by a compression spring.

6. The assembly disc welding jig of claim 1, wherein the cell mounting portion is mounted with an elastic mount.

7. The assembly disc welding fixture according to claim 6, wherein the cell mounting portion is a cell positioning groove formed in the material carrier, and the shape of the cell positioning groove is matched with the shape of a cell to be welded.

8. The assembly jig of claim 6 or 7, wherein the material carrier is provided with a cell positioning member, the material carrier is configured with an arc-shaped groove extending in a vertical direction, a radius of the arc-shaped groove is the same as a radius of a cylindrical cell to be welded, and the cell positioning member is used for pressing the cell to be welded to the arc-shaped groove.

9. The assembly tray welding fixture according to any one of claims 2 to 7, wherein the positioning seat comprises a pressing member and a bottom plate and a vertical plate connected to the pressing member, positioning blocks are respectively mounted on two sides of the bottom plate, and the material carrier is positioned in an acupuncture point formed by the vertical plate and the two positioning blocks and pressed on the vertical plate through the pressing member.

10. The assembly tray welding fixture according to any one of claims 1 to 7, wherein the material carrier comprises a fixedly connected cell carrier and an assembly tray positioning block, the cell mounting portion is disposed on the cell carrier, the positioning groove is disposed on the assembly tray positioning block, and a positioning structure is disposed on a contact surface of the cell carrier and the assembly tray positioning block.