CN117697132A - Self-adaptive support plate structure for welding side wall of cylindrical battery and method for welding side wall of cylindrical battery - Google Patents
Self-adaptive support plate structure for welding side wall of cylindrical battery and method for welding side wall of cylindrical battery Download PDFInfo
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- CN117697132A CN117697132A CN202311636591.7A CN202311636591A CN117697132A CN 117697132 A CN117697132 A CN 117697132A CN 202311636591 A CN202311636591 A CN 202311636591A CN 117697132 A CN117697132 A CN 117697132A
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- Prior art keywords
- support
- adaptive
- support plate
- groove
- supporting
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- 238000003466 welding Methods 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims description 7
- 210000000078 claw Anatomy 0.000 claims abstract description 71
- 230000003044 adaptive effect Effects 0.000 claims description 36
- 238000009434 installation Methods 0.000 claims description 5
- 230000035515 penetration Effects 0.000 claims description 4
- 210000001503 joint Anatomy 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 4
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910001415 sodium ion Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/10—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating making use of vibrations, e.g. ultrasonic welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/26—Auxiliary equipment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
- B23K26/702—Auxiliary equipment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention discloses a self-adaptive support plate structure for welding the side wall of a cylindrical battery, which comprises a first support plate and a second support plate which are connected with each other, wherein the first support plate comprises a first support main body, the first support main body is provided with a first back surface and a first side surface, a support arm extends outwards on the first side surface, and a support claw is arranged at the end part of the support arm; the second support plate comprises a second support main body, the second support main body is provided with a second front surface, and a fixing rod extends outwards on the second front surface; the first back is provided with a first groove, the bottom of the first groove is provided with a mounting through hole towards the first front direction, the second support main body is embedded in the first groove, the fixing rod penetrates through the mounting through hole and extends out of the first front surface, and a self-adaptive gap is arranged between the first support plate and the second support plate so that the first support plate moves relative to the second support plate. When the supporting claw is acted by external force, the first supporting plate can move relative to the second supporting plate so as to adaptively adjust the position of the first supporting plate.
Description
Technical Field
The invention relates to the field of cylindrical batteries, in particular to a self-adaptive support plate structure for welding the side wall of a cylindrical battery and a method for welding the side wall of the cylindrical battery.
Background
At present, the lithium ion/sodium ion cylindrical battery has the advantages of high energy density, good capacity consistency, capability of supporting high-rate charge and discharge and the like, gradually becomes a main stream product of new energy industry, wherein the full-tab/current collecting disc/side wall welding structure is adopted, and is determined as the preferred direction of the cylindrical battery structure by more and more manufacturers, so that the high-rate of the lithium ion/sodium ion cylindrical battery is better improved, the energy density is improved and the like, and the side wall welding of the current collecting disc has the common problems: 1. the cylindrical power battery collecting disc is assembled in a shell, and the outer diameter of the vertical edge of the cylindrical power battery collecting disc is generally smaller than the inner diameter of the shell, so that gaps are easy to exist in the fit, and the cold joint is caused; 2. in order to solve the problem of the lamination of the vertical edge and the shell wall of the current collecting disc, manufacturers in the industry adopt a mode of locking each battery by a clamp to ensure that the lamination of the vertical edge and the shell is good, but the assembly and the disassembly are too complex, and the efficiency is lower.
Disclosure of Invention
The invention aims to provide a self-adaptive support plate structure for welding a side wall of a cylindrical battery and a method for welding the side wall of the cylindrical battery, so as to ensure that the vertical edge of a current collecting disc is well attached to the inner wall of a shell, and avoid the problem of cold joint.
In order to achieve the above object, the present invention provides a self-adaptive support plate structure for welding a side wall of a cylindrical battery, which is characterized by comprising a first support plate and a second support plate connected with each other, wherein the first support plate comprises a first support main body, the first support main body is provided with a first front surface, a first back surface opposite to the first front surface and a first side surface connecting the first front surface and the first back surface, a support arm is outwards extended on the first side surface, and a support claw is arranged at the end part of the support arm; the second support plate comprises a second support main body, the second support main body is provided with a second front face, a second back face opposite to the second front face and a second side face connecting the second front face and the second back face, and a fixing rod extends outwards on the second front face; the first back is provided with a first groove corresponding to the second supporting main body, the bottom of the first groove is provided with a mounting through hole towards the first front direction, the second supporting main body is embedded in the first groove, the fixing rod penetrates through the mounting through hole and stretches out of the first front surface, and a self-adaptive gap is arranged between the first supporting plate and the second supporting plate so that the supporting claw can drive the first supporting plate to move relative to the second supporting plate under the action of external force to form self-adaptive adjustment.
Preferably, a first self-adaptive gap is arranged between the fixing rod and the mounting through hole, a second self-adaptive gap is arranged between the first supporting main body and the second supporting main body, a guide block outwards extends on the second side face, a mounting groove is formed in the end portion of the guide block towards the direction of the second side face, a spring is arranged in the mounting groove, a guide groove is formed in the first back face corresponding to the guide block, the guide groove is connected with the first groove, the guide block is embedded in the guide groove, a third self-adaptive gap is arranged between the guide block and the guide groove, one end of the spring is located in the mounting groove, and the other end of the spring stretches into the third self-adaptive gap and is in butt joint with the groove wall of the guide groove.
Preferably, the value of the second adaptive gap is greater than or equal to 1 millimeter and less than or equal to 2 millimeters, and the first adaptive gap and the third adaptive gap are both greater than or equal to the second adaptive gap.
Preferably, the guide groove is provided along the extending direction of the support arm.
Preferably, the number of the supporting arms is three, the number of the three supporting arms is three, the number of the guiding grooves is three, the three guiding grooves are respectively corresponding to the three extending directions of the supporting arms, the number of the guiding blocks is three, the three guiding blocks are respectively corresponding to the three guiding grooves, the number of the springs is three, and the three springs are respectively corresponding to the three guiding blocks and are arranged in the mounting grooves.
Preferably, the first support body and the second support body are both circular plate-shaped, and the first support body, the second support body and the fixing rod are both concentrically arranged.
Preferably, the supporting claw is arranged towards the plane where the first front face is located, and the supporting claw is connected with the supporting arm through a guiding fillet.
Preferably, the number of the supporting claws is at least two, and the at least two supporting claws are circumferentially and uniformly arranged at the end part of the supporting arm at intervals.
Preferably, the first back surface is further provided with a second groove surrounding the first groove and the guide groove, and a cover plate is embedded in the second groove to seal the second back surface of the second support main body and the guide block.
The invention also provides a side wall welding method of the cylindrical battery, which comprises the following steps: providing a current collecting disc, wherein the current collecting disc comprises a disc-shaped main body and a vertical edge which is arranged at the edge of the disc-shaped main body and is bent to the upper side of the disc-shaped main body, and the current collecting disc is arranged in a shell of a cylindrical battery; providing the self-adaptive support plate structure, wherein the support claws are arranged corresponding to the vertical edges; clamping the fixing rod by using a clamp, and embedding the self-adaptive support plate structure into the shell from a shell opening of the shell so that the support claw is propped against the vertical edge to attach the vertical edge to the inner wall of the shell; and welding the vertical edge with the shell by adopting a laser penetration welding mode or an ultrasonic welding mode.
Compared with the prior art, the support claw can be used for propping and laminating the vertical edge of the current collecting disc of the cylindrical battery with the inner wall of the shell, the second support main body is arranged in the first support main body, and the fixing rod is clamped and fixed by the clamp in the using state, so that the fixing rod is fixed relative to the clamp, the second support main body connected with the fixing rod is also fixed relative to the clamp, and the self-adaptive gap is arranged between the first support plate and the second support plate.
Drawings
Fig. 1 is a structural diagram of an adaptive support plate structure according to an embodiment of the present invention.
FIG. 2 is a schematic view of another embodiment of an adaptive support plate structure.
Fig. 3 is an exploded view of an adaptive support plate structure according to an embodiment of the present invention.
Fig. 4 is a structural view of a first support plate according to an embodiment of the present invention.
Fig. 5 is a structural view of the second support plate according to the embodiment of the present invention after the springs are disposed thereon.
Fig. 6 is a view showing another angle of the second support plate after the springs are provided in the second support plate according to the embodiment of the present invention.
Fig. 7 is a block diagram of the adaptive support plate structure of the present invention with the cover plate removed.
Fig. 8 is a block diagram of a current collecting plate according to an embodiment of the present invention.
Fig. 9 is a cross-sectional view showing the structure of the adaptive support plate mounted on the housing after the current collecting plate is mounted, in which one support claw of the adaptive support plate may interfere with the housing.
Fig. 10 is a front view of fig. 9.
Fig. 11 is a structural diagram of the structure of the adaptive support plate mounted on the housing with the current collecting plate according to the embodiment of the present invention, where the adaptive support plate is mounted inside the housing and supports the vertical edge and the inner wall of the housing.
Detailed Description
In order to describe the technical content, the constructional features and the effects achieved by the present invention in detail, the following description is made with reference to the embodiments in conjunction with the accompanying drawings.
As shown in fig. 1 to 11, an embodiment of the present invention provides a cylindrical battery sidewall welding adaptive support plate structure, which includes a first support plate 1 and a second support plate 2 connected to each other, the first support plate 1 including a first support body having a first front surface 11, a first rear surface 12 disposed opposite to the first front surface 11, and a first side surface 13 connecting the first front surface 11 and the first rear surface 12, a support arm 14 extending outwardly from the first side surface 13, and a support claw 141 disposed at an end of the support arm 14; the second support plate 2 includes a second support body having a second front surface 21, a second rear surface 22 opposite to the second front surface 21, and a second side surface 23 connecting the second front surface 21 and the second rear surface 22, and a fixing rod 24 extending outwardly from the second front surface 21; the first back 12 is provided with a first groove 15 corresponding to the second support main body, the bottom of the first groove 15 is provided with a mounting through hole 16 towards the direction of the first front 11, the second support main body is embedded in the first groove 15, the fixing rod 24 is arranged in the mounting through hole 16 in a penetrating mode and extends out of the first front 11, and a self-adaptive gap is formed between the first support plate 1 and the second support plate 2 so that the first support plate 1 can be driven to move relative to the second support plate 2 to form self-adaptive adjustment when the support claw 141 is acted by external force.
Specifically, the first support body and the second support body are both in a circular plate shape to correspond to the circular shell 6 of the cylindrical battery, the supporting claw 141 can be used for pressing and attaching the vertical edge 52 of the current collecting disc 5 of the cylindrical battery to the inner wall of the shell 6, the second support body is arranged in the first support body, and an adaptive gap is arranged between the first support plate 1 and the second support plate 2, in the use state, the fixing rod 24 is clamped and fixed by the clamp, therefore, the fixing rod 24 is fixed relative to the clamp, the second support body connected with the fixing rod 24 is also fixed relative to the clamp, and an adaptive gap is arranged between the first support plate 1 and the second support plate 2, when the supporting claw 141 is acted by external force, the first support plate 1 can move relative to the second support plate 2 to adaptively adjust the position of the first support plate 1, and the structure 10 of the adaptive support plate is very ingenious in structural design.
In the embodiment of the invention, as shown in fig. 1 to 10, a first self-adaptive gap 181 is arranged between the fixing rod 24 and the mounting through hole 16, a second self-adaptive gap 182 is arranged between the first supporting main body and the second supporting main body, a guide block 25 is outwards extended on the second side surface 23, a mounting groove 26 is formed in the end part of the guide block 25 towards the direction of the second side surface 23, a spring 4 is arranged in the mounting groove 26, a guide groove 17 is formed on the first back surface 12 corresponding to the guide block 25, the guide groove 17 is connected with the first groove 15, the guide block 25 is embedded in the guide groove 17, a third self-adaptive gap 183 is arranged between the guide block 25 and the guide groove 17, one end of the spring 4 is positioned in the mounting groove 26, and the other end of the spring 4 extends into the third self-adaptive gap 183 and is abutted with the groove wall of the guide groove 17. Specifically, the installation groove 26 may be a groove having four side groove walls or a groove having only two side groove walls, and as shown in fig. 5 to 6, the guide groove 17 is U-shaped, and has no upper groove wall and no lower groove wall, and the guide groove 17 may be a guide groove 17 including three side groove walls, for example, two side groove walls and a lower groove wall, and the specific structure of the guide groove 17 is not limited herein, as long as it is actually required. The spring 4 is in a compressed state, and the spring 4 can be further compressed when being acted by external force, so that the force acted by the supporting claw 141 can be buffered when the supporting claw 141 is stressed, and meanwhile, the first supporting plate 1 can be restored when the supporting claw 141 is not acted by external force. The cooperation of the guide block 25 and the guide groove 17 can enable the supporting claw 141 to move along the guide block 25 when being stressed, and avoid the first supporting plate 1 from generating larger rotation deflection with the second supporting plate 2.
In the embodiment of the present invention, as shown in fig. 7 and 10, the value of the second adaptive gap 182 is greater than or equal to 1 mm and less than or equal to 2 mm, and the first adaptive gap 181 and the third adaptive gap 183 are both greater than or equal to the second adaptive gap 182. Specifically, the first adaptive gap 181 and the third adaptive gap 183 may be the same as the second adaptive gap 182 or slightly larger than the second adaptive gap 182, and the maximum distance of movement of the second support plate 2 relative to the first support plate 1 is smaller than the value W of the second adaptive gap 182, and the adoption of the second adaptive gap 182 as the maximum distance of movement of the second support plate 2 relative to the first support plate 1 may make the movement of the second support plate 2 relative to the first support plate 1 more stable.
In the embodiment of the present invention, the guide groove 17 is provided along the extending direction of the support arm 14. Specifically, as shown in fig. 7, the guide groove 17 and the corresponding support arm 14 have the same center line, as shown by the b line and the c line in fig. 7, so that the structures of the first support plate 1 and the second support plate 2 are more reasonable and the stress is more stable.
In the embodiment of the present invention, as shown in fig. 1 to 7, the number of the supporting arms 14 is three, the three supporting arms 14 are uniformly arranged at intervals, the number of the guiding grooves 17 is three, the three guiding grooves 17 are respectively arranged corresponding to the extending directions of the three supporting arms 14, the number of the guiding blocks 25 is three, the three guiding blocks 25 are respectively arranged in the guiding grooves 17 correspondingly, the number of the springs 4 is three, and the three springs 4 are respectively arranged in the mounting grooves 26 of the three guiding blocks 25 correspondingly. Specifically, the number of the supporting arms 14 is three, the included angle between the central lines of the adjacent supporting arms 14 is 120 degrees, as shown in fig. 7, the included angle between the b line and the c line is 120 degrees, each guiding groove 17, the corresponding supporting arm 14 and the corresponding spring 4 have the same central line, through the arrangement of the springs 4, the first supporting main body, the second supporting main body and the fixing rod 24 are all kept concentrically arranged, each supporting arm 14 is provided with a supporting claw 141, when the shell opening 61 of the cylindrical battery shell 6 enters the shell 6, and when the shell opening 61 interferes with the supporting claw 141, as shown in fig. 9, the bottom of the interfered supporting claw 141a is acted by the acting force of the shell opening 61 on the generating direction e of the supporting claw 141a, and the supporting claw 141a drives the first supporting plate 1 to move along the guiding block 25, so as to automatically correct the deviation, and the interfered supporting claw 141 can enter the inside of the shell 6.
Of course, in some other embodiments, the number of the supporting arms 14 may be one, two, four, etc., and the number of the supporting arms 14 is set corresponding to the vertical edges 52 of the collecting tray 5, and in the case of a plurality of supporting arms 14, the supporting arms 14 may be uniformly arranged on the first side 13, and the number of the corresponding guiding grooves 17, the corresponding guiding blocks 25, and the corresponding springs 4 are the same as the number of the supporting arms 14 and are all set correspondingly.
In the embodiment of the present invention, the supporting claws 141 are disposed towards the plane where the first front surface 11 is located, the supporting claws 141 are connected with the supporting arm 14 through the guiding fillets 142, at least two supporting claws 141 are disposed towards the upper side, and at least two supporting claws 141 are circumferentially and uniformly spaced at the end of the supporting arm 14. Specifically, the supporting arm 14 extends outwards from the lower part of the first side surface 13, the supporting claws 141 may be a whole plate structure located at the end of the supporting arm 14, or may be at least two supporting claws arranged at intervals, in design, the outer periphery of the supporting claws 141 is an arc surface corresponding to the vertical edge 52 of the collecting tray 5 and the casing 6, and the relationship between the outer diameter D of the supporting claws 141 and the inner diameter D of the casing 6 and the thickness T of the vertical edge 52 of the collecting tray 5 is: d=d-2*T, and because of tolerance problems in the production process, the supporting claws 141 may interfere with the shell openings 61, and by providing the guiding fillets 142 at the bottoms of the supporting claws 141, when one of the supporting claws 141 interferes with the shell opening 61, the supporting claw 141 interfering with the shell opening can enter the shell opening 61 through the guiding fillets 142, so that the shell opening 61 generates acting force on the supporting claw 141 and automatically rectifies the deviation, and the design is ingenious.
In the embodiment of the present invention, the first back surface 12 is further provided with a second groove 19 surrounding the first groove 15 and the guide groove 17, the second groove 19 is embedded with a cover plate 3 to close the second back surface 22 of the second support body and the guide block 25, and the cover plate 3 makes the first support plate 1 and the second support plate 2 and the spring 4 connected together, and of course, in some other embodiments, the first support plate 1 and the second support plate 2 and the spring 4 may be connected together in other manners without affecting the movement of the first support plate 1 relative to the second support plate 2, for example, the cover plate only covers the guide groove 17.
The embodiment of the invention also provides a method for welding the side wall of the cylindrical battery, which comprises the following steps:
s1, providing a current collecting disc 5, wherein the current collecting disc 5 comprises a disc-shaped main body 51 and a vertical edge 52 which is arranged at the edge of the disc-shaped main body 51 and is bent to the upper side of the disc-shaped main body 51, and the current collecting disc 5 is arranged in a shell 6 of a cylindrical battery; specifically, as shown in fig. 8, the edges of the current collecting tray 5 are provided with vertical edges 52 corresponding to the inner wall of the cylindrical battery case 6, the vertical edges 52 are specifically three arranged at equal intervals in the circumferential direction, and the current collecting tray 5 is fixed with the case 6 by welding the vertical edges 52 arranged at equal intervals in the circumferential direction with the inner wall of the case 6.
S2, providing the self-adaptive support plate structure 10, wherein the support claw 141 is arranged corresponding to the vertical edge 52; specifically, the number of the supporting claws 141 is set corresponding to the number of the vertical edges 52, so that each vertical edge 52 can be supported by the supporting claw 141 to be attached to the inner wall of the cylindrical battery case 6, and the situation of cold welding during welding is avoided.
S3, clamping the fixing rod 24 by a clamp, embedding the self-adaptive support plate structure 10 into the shell 6 from the shell opening 61 of the shell 6, and enabling the support claw 141 to press against the vertical edge 52 so as to attach the vertical edge 52 to the inner wall of the shell 6; specifically, when the bottom of the supporting claw 141 interferes with the shell opening 61 and is acted by the acting force of the shell opening 61, the acting force drives the first supporting plate 1 to move relative to the second supporting plate 2 to adjust the position of the first supporting plate 1 in a self-adaptive manner, so that the self-adaptive supporting plate structure 10 is formed, and the structural design is very ingenious.
S4, welding the vertical edge 52 with the shell 6 by adopting a laser penetration welding mode or an ultrasonic welding mode. Specifically, after the vertical edge 52 is attached to the inner wall of the housing 6, the side wall welding can be performed in a laser penetration welding manner or an ultrasonic welding manner, the side wall welding is completed, the fixture clamps the fixing rod 24 to drive the self-adaptive support plate structure 10 to go out of the housing 61, and the spring 4 pushes the first support plate 1 to reset.
In the embodiment of the present invention, the supporting claws 141 are connected with the supporting arms 14 through the guiding fillets 142, the supporting arms 14, the guiding grooves 17, the guiding blocks 25 and the springs 4 are specifically set as described above, for example, the number of the supporting arms 14 corresponds to that of the vertical edges 52, the number of the supporting arms 14 is three, the three supporting arms 14 are uniformly arranged at intervals, the number of the guiding grooves 17 is three, the three guiding grooves 17 respectively correspond to the extending directions of the three supporting arms 14, the number of the guiding blocks 25 is three, the three guiding blocks 25 respectively correspond to the guiding grooves 17, the number of the springs 4 is three, and the three springs 4 are respectively correspond to the mounting grooves 26 of the three guiding blocks 25. Specifically, the number of the supporting arms 14 is three, the included angle between the central lines of the adjacent supporting arms 14 is 120 degrees, as shown in fig. 7, the included angle between the b line and the c line is 120 degrees, each guiding groove 17, the corresponding supporting arm 14 and the corresponding spring 4 have the same central line, through the arrangement of the springs 4, the first supporting main body, the second supporting main body and the fixing rod 24 are all kept concentrically arranged, each supporting arm 14 is provided with a supporting claw 141, when the shell opening 61 of the cylindrical battery shell 6 enters the shell 6, and when the shell opening 61 interferes with the supporting claw 141, as shown in fig. 9, the bottom of the interfered supporting claw 141a is acted by the acting force of the shell opening 61 on the generating direction e of the supporting claw 141a, and the supporting claw 141a drives the first supporting plate 1 to move along the direction e along the guiding block 25, so that the interfered supporting claw 141 can automatically rectify and enter the inside of the shell 6. The supporting claws 141 are arranged towards the plane where the first front face 11 is located, the supporting claws 141 are connected with the supporting arm 14 through guide fillets 142, at least two supporting claws 141 are arranged at intervals at the end part of the supporting arm 14. Specifically, the supporting arm 14 extends outwards from the lower part of the first side surface 13, the supporting claws 141 may be a whole plate structure located at the end of the supporting arm 14, or may be at least two of the supporting claws 141 that are arranged at intervals, and in design, the outer circumference of the supporting claw 141 is a corresponding circular arc, and the relationship between the outer diameter D of the supporting claw 141 and the inner diameter D of the housing 6 and the thickness T of the vertical edge 52 of the collecting tray 5 is: d=d-2*T, and because of tolerance problems in the production process, the supporting claws 141 may interfere with the shell openings 61, and by providing the guiding fillets 142 at the bottoms of the supporting claws 141, when one of the supporting claws 141 interferes with the shell opening 61, the supporting claw 141 interfering with the shell opening can enter the shell opening 61 through the guiding fillets 142, so that the shell opening 61 generates acting force on the supporting claw 141 and automatically rectifies the deviation, and the design is ingenious.
The foregoing disclosure is merely illustrative of the principles of the present invention, and thus, it is intended that the scope of the invention be limited thereto and not by this disclosure, but by the claims appended hereto.
Claims (10)
1. The self-adaptive support plate structure for the cylindrical battery side wall welding is characterized by comprising a first support plate and a second support plate which are connected with each other, wherein the first support plate comprises a first support main body, the first support main body is provided with a first front surface, a first back surface opposite to the first front surface and a first side surface connecting the first front surface and the first back surface, a support arm is outwards extended on the first side surface, and a support claw is arranged at the end part of the support arm; the second support plate comprises a second support main body, the second support main body is provided with a second front face, a second back face opposite to the second front face and a second side face connecting the second front face and the second back face, and a fixing rod extends outwards on the second front face;
the first back is provided with a first groove corresponding to the second supporting main body, the bottom of the first groove is provided with a mounting through hole towards the first front direction, the second supporting main body is embedded in the first groove, the fixing rod penetrates through the mounting through hole and stretches out of the first front surface, and a self-adaptive gap is arranged between the first supporting plate and the second supporting plate so that the supporting claw can drive the first supporting plate to move relative to the second supporting plate under the action of external force to form self-adaptive adjustment.
2. The cylindrical battery side wall welding self-adaptive support plate structure according to claim 1, wherein a first self-adaptive gap is arranged between the fixing rod and the installation through hole, a second self-adaptive gap is arranged between the first support main body and the second support main body, a guide block extends outwards on the second side face, an installation groove is formed in the end portion of the guide block towards the second side face, a spring is arranged in the installation groove, a guide groove is formed in the first back face corresponding to the guide block, the guide groove is connected with the first groove, the guide block is embedded in the guide groove, a third self-adaptive gap is arranged between the guide block and the guide groove, one end of the spring is located in the installation groove, and the other end of the spring extends into the third self-adaptive gap and is in butt joint with the groove wall of the guide groove.
3. The cylindrical battery sidewall welding adaptive support plate structure of claim 2, wherein the second adaptive gap has a value greater than or equal to 1 millimeter and less than or equal to 2 millimeters, and wherein the first adaptive gap and the third adaptive gap are both greater than or equal to the second adaptive gap.
4. The cylindrical battery sidewall welding adaptive support plate structure of claim 2, wherein said guide grooves are disposed along the extension direction of said support arms.
5. The self-adaptive support plate structure for cylindrical battery side wall welding according to claim 2, wherein three support arms are uniformly arranged at intervals, three guide grooves are respectively arranged corresponding to the extending directions of the three support arms, three guide blocks are respectively arranged in the guide grooves, three springs are respectively arranged in the mounting grooves of the three guide blocks.
6. The adaptive support plate structure for cylindrical battery sidewall welding according to claim 5, wherein the first support body and the second support body are both disk-shaped, and the first support body, the second support body and the fixing rod are both concentrically arranged.
7. The cylindrical battery sidewall welding adaptive support plate structure of claim 1, wherein the support claw is disposed toward a plane where the first front surface is located, and wherein the support claw is connected to the support arm by a guide fillet.
8. The cylindrical battery sidewall welding adaptive support plate structure of claim 1, wherein the number of support claws is at least two, and the at least two support claws are circumferentially uniformly spaced at the end of the support arm.
9. The cylindrical battery sidewall welding self-adaptive support plate structure according to claim 2, wherein a second groove surrounding the first groove and the guide groove is further provided on the first back surface, and a cover plate is embedded in the second groove to close the second back surface of the second support body and the guide block.
10. The side wall welding method of the cylindrical battery is characterized by comprising the following steps of:
providing a current collecting disc, wherein the current collecting disc comprises a disc-shaped main body and a vertical edge which is arranged at the edge of the disc-shaped main body and is bent to the upper side of the disc-shaped main body, and the current collecting disc is arranged in a shell of a cylindrical battery;
providing an adaptive support plate structure according to any one of claims 1 to 9, said support claws being arranged in correspondence of said vertical edges;
clamping the fixing rod by using a clamp, and embedding the self-adaptive support plate structure into the shell from a shell opening of the shell so that the support claw is propped against the vertical edge to attach the vertical edge to the inner wall of the shell;
and welding the vertical edge with the shell by adopting a laser penetration welding mode or an ultrasonic welding mode.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311636591.7A CN117697132A (en) | 2023-11-30 | 2023-11-30 | Self-adaptive support plate structure for welding side wall of cylindrical battery and method for welding side wall of cylindrical battery |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311636591.7A CN117697132A (en) | 2023-11-30 | 2023-11-30 | Self-adaptive support plate structure for welding side wall of cylindrical battery and method for welding side wall of cylindrical battery |
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