CN213878170U - Electric pile box - Google Patents
Electric pile box Download PDFInfo
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- CN213878170U CN213878170U CN202022975923.2U CN202022975923U CN213878170U CN 213878170 U CN213878170 U CN 213878170U CN 202022975923 U CN202022975923 U CN 202022975923U CN 213878170 U CN213878170 U CN 213878170U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Abstract
The utility model relates to a galvanic pile box field, concretely relates to galvanic pile box. In the pile box body, two side edges of at least one pair of side plates in two pairs of side plates which are respectively opposite are provided with a first step structure, the two side edges of the two pairs of side plates are mutually clamped, and a welding seam is arranged at the clamping position; the bottom edges of the side plates are provided with second step structures which are respectively clamped at the edges of the bottom plate, and welding seams are arranged at the clamping positions; the utility model adopts welding seams at the edge of the side plate and the edge of the bottom of the side plate and the bottom plate, which solves the problems of screw looseness, thread corrosion, sealant aging and large screw installation space requirement; in addition, in the forming process of the pile box body, the bottom plate, the front plate, the left side plate, the right side plate and the rear plate are mutually clamped to replace the inner support frame, so that the defects of troublesome disassembly and assembly, low efficiency and high cost of the inner support frame are overcome.
Description
Technical Field
The utility model relates to a galvanic pile box field, concretely relates to galvanic pile box.
Background
The electric pile is formed by stacking and combining a plurality of single batteries in a series connection mode, sealing elements are embedded among a plurality of single batteries, and the single batteries are tightly pressed by a front end plate and a rear end plate and then are fastened and fastened by screws, so that the fuel cell electric pile is formed. At present, the existing pile box body is mostly connected with front, rear, left and right side plates and a bottom plate through bolts, threaded holes are machined in the front, rear, left and right side plates, countersunk holes are machined in the outer surfaces of the front, rear, left and right bottom plates, assembly screws are used for achieving assembly connection of the box body, and assembly gaps are filled with sealant to guarantee the sealing performance of the box body.
However, the pile box body assembled and connected by the screws has the following defects:
1. the screw connection mode is adopted, so that looseness caused by vibration can be generated during use;
2. the threaded gap of the bolt connection is easy to corrode, so that the connection fails;
3. the thickness of each plate of the box body needs to be designed to be larger in order to ensure enough screw connection space by adopting a screw connection mode, the screw is a steel product, the weight is heavier than that of aluminum alloy with the same volume, and the whole weight of the box body is heavy;
4. the box body is provided with more screws and is not beautiful;
5. the use environment inside the box body is complex, and the sealant is easy to age to cause the sealing failure.
In order to solve the above problems, chinese patent CN109623129A discloses an internal support device for friction stir welding of a sealed box structure and a welding process thereof. The utility model discloses a preset dismountable inner support device in sealed box end of body position before welding and be used for supporting the welding position, install additional the box terminal surface and form the joint with the supporting position and connect as the position of welding, adopt the friction stir welding mode to weld the joint position, seal the box terminal surface. After welding, the combined supporting joint of the inner supporting device is controlled, so that the supporting joint is separated and does not have a supporting function any more, the inner supporting device is separated into single components at the moment, the size of the end face of each component is smaller than that of an external communicating hole of the sealing box body, the components of the inner supporting device are taken out from the through holes one by one through the outer lifting cables, and finally the end face sealing and welding process of the sealing box body structure is achieved, and the combined supporting joint is suitable for end face sealing and welding of the sealing box body.
However, the welding process disclosed in the above patent requires the use of an inner support device that needs to be continuously disassembled and assembled, and the size of the inner support device needs to be reduced each time the inner support device is disassembled, and the size of the inner support device needs to be increased after the inner support device is assembled, so that the welding process depends on manual operation, and has high labor cost and low efficiency.
SUMMERY OF THE UTILITY MODEL
Therefore, the to-be-solved technical problem of the utility model lies in overcoming and adopting screw assembly to connect among the prior art has a great deal of drawback, and adopts welding process to need extra strutting arrangement with high costs and the technical problem of inefficiency to provide a pile box and manufacturing method thereof.
In order to solve the technical problem, the utility model discloses a technical scheme as follows:
the utility model provides a galvanic pile box body, which comprises a bottom plate and two pairs of side plates which are respectively arranged oppositely; two side edges of at least one pair of side plates are provided with first step structures; the edges of two sides of two pairs of side plates are mutually clamped, and welding seams are arranged at the clamping positions; the bottom edge of the side plate is provided with a second step structure, the second step structures are respectively clamped at the edge of the bottom plate, and a welding seam is arranged at the clamping position.
In the above-mentioned pile box, the welding seam is a friction stir welding seam.
In the pile box, the welding seam at the clamping position is positioned on the outer side of the box.
In the above-mentioned pile box, the bottom plate and two pairs of side plates are aluminum alloy plate bodies respectively.
In the pile box, two pairs of side plates comprise a front plate, a rear plate, a left side plate and a right side plate; wherein, the both sides edge of front bezel and back plate, left side board and right side board all has first stair structure, and the both sides edge of two couples of curb plates all passes through first stair structure joint each other.
In the above-mentioned pile box, the first step structure and the second step structure are two-stage step structures, which respectively include an outer step and an inner step.
In the pile box, the edge of one surface of the bottom plate facing to the two pairs of side plates is provided with a plurality of first groove body structures which are uniformly distributed; and a second groove body structure clamped with the first groove body structure is arranged at the step position on the inner side of the second step structure.
In the above-mentioned pile box, the length of the outside step of the two-stage step structure is the same as the height of the bottom plate.
In the above-mentioned pile box, the height of outside step is the same with the height of inboard step.
The utility model discloses technical scheme has following advantage:
1. the utility model provides a pile box body, wherein two side edges of at least one pair of side plates in two pairs of side plates which are respectively arranged oppositely are provided with a first step structure, the two side edges of the two pairs of side plates are mutually clamped, and a welding seam is arranged at the clamping position; the bottom edges of the side plates are provided with second step structures which are respectively clamped at the edges of the bottom plate, and welding seams are arranged at the clamping positions; the utility model adopts welding seams at the edge of the side plate and the edge of the bottom of the side plate and the bottom plate, which solves the problems of screw looseness, thread corrosion, sealant aging and large screw installation space requirement; in addition, in the forming process of the pile box body, the bottom plate, the front plate, the left side plate, the right side plate and the rear plate are mutually clamped to replace the inner support frame, so that the defects of troublesome disassembly and assembly, low efficiency and high cost of the inner support frame are overcome.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in 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 perspective view of an aluminum alloy cell stack case provided by an embodiment of the present invention;
FIG. 2 is a top view of an aluminum alloy cell stack case provided by an embodiment of the present invention;
fig. 3 is a first exploded perspective view of an aluminum alloy cell stack case provided in an embodiment of the present invention;
fig. 4 is a second exploded perspective view of the aluminum alloy cell stack case provided in the embodiment of the present invention;
FIG. 5 is an enlarged view of a portion of FIG. 3;
FIG. 6 is a first schematic diagram of a weld joint of a manufacturing method of an aluminum alloy cell stack case provided by an embodiment of the present invention;
fig. 7 is a second schematic welding line diagram of the manufacturing method of the aluminum alloy stack case provided by the embodiment of the invention.
Description of reference numerals:
1. a base plate; 1a, a first groove structure; 2. a front plate; 2a, a second step structure of the front plate; 2b, a first step structure of the front plate; 2c, a second groove structure of the front plate; 3. a left side plate; 3a, a first step structure of the left side plate; 3b, a second step structure of the left side plate; 4. a right side plate; 4a, a first step structure of the right side plate; 5. a back plate; 5a, a first step structure of the rear plate; 6a, a first straight seam; 6b, a first corner seam; 6c, a second straight seam; 6d, second corner seam; 6e, a third straight seam; 7a, a fourth straight seam; 7b, a third corner seam; 7c, a fifth straight seam; 7d, a fourth corner seam; 7e, a sixth straight seam; 8. a third weld; 9. and a fourth weld.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, 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 work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally 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.
Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
Example 1
As shown in fig. 1-7, the present embodiment provides a stack case, which is an aluminum alloy stack case, and includes a bottom plate 1, and two pairs of side plates, a front plate 2, a rear plate 5, a left side plate 3, and a right side plate 4, which are respectively opposite to each other, where the side plates and the bottom plate are aluminum alloy plate bodies, and the aluminum alloy has the advantages of light weight, high strength, and easy processing; the bottom plate is a horizontally arranged rectangular plate, and each side plate is a vertically arranged rectangular plate; preferably, both side edges of each pair of side plates have a first step structure, namely, the first step structure 2b of the front plate, the first step structure 3a of the left side plate, the first step structure 4a of the right side plate and the first step structure 5a of the rear plate are respectively included; the edges of the two sides of each side plate are mutually clamped by the first step structures, welding seams are arranged at the clamping positions, and the welding seams are preferably friction stir welding seams; the bottom edge of the side plate is provided with a second step structure which respectively comprises a second step structure 2a of the front plate, a second step structure of the rear plate, a second step structure 3b of the left side plate and a second step structure of the right side plate; the second step structures are respectively clamped at the edge of the bottom plate 1, a welding seam is arranged at the clamping position, and the welding seam is preferably a friction stir welding seam.
According to the aluminum alloy galvanic pile box body provided by the embodiment, the edges of the side plates and the edges of the bottoms of the side plates and the bottom plate are connected by friction stir welding seams, so that the defects of screw looseness, thread corrosion, sealant aging and large screw installation space requirement are overcome; in addition, in the forming process of the pile box body, the bottom plate, the front plate, the left side plate, the right side plate and the rear plate are mutually clamped to replace the inner support frame, so that the defects of troublesome disassembly and assembly, low efficiency and high cost of the inner support frame are overcome.
In alternative embodiments, the stack case may be made of other alloy materials.
In the above-mentioned pile box, the welding seam of joint department by foretell first stair structure joint each other including both sides edge of each curb plate to and second stair structure joint respectively is in the welding seam of joint department at the edge of bottom plate 1 is located the outside of box.
In the above-mentioned pile box, the length of the second step structure 2a of the front plate is equal to the length of the connecting edge of the bottom plate 1 and the front plate 2, and when the pile box is installed, the bottom surface of the front plate 2 abuts against the top surface of the bottom plate 1, the side surface of the second step structure 2a of the front plate abuts against the side surface of the bottom plate 1, and the bottom surface of the second step structure 2a of the front plate is flush with the bottom surface of the bottom plate 1. In addition, the bottom ends of the left side plate 3, the right side plate 4 and the rear plate 5 are provided with the same structure as the second stepped structure 2a of the front plate.
In the above-mentioned pile box, the first step structure and the second step structure are two-stage step structures, which respectively include an outer step and an inner step; when the first step structures are mutually clamped, the outer side steps and the inner side steps are mutually clamped to form a clamping gap in a bent shape, and at the moment, the welding seam is arranged between the outer side steps; when the second step is mutually clamped with the bottom plate, the inner step is clamped at the upper edge of the bottom plate, and the welding seam is arranged between the outer step and the side wall of the bottom plate; the arrangement mode of the secondary step structure can improve the stability of mutual support between the side plates and the bottom plate.
Preferably, in the above-mentioned pile box, the edge of one side of the bottom plate 1 facing two pairs of side plates is provided with a plurality of first groove structures 1a which are uniformly distributed; a second groove structure clamped with the first groove structure is arranged at the step at the inner side of the second step structure, and comprises a second groove structure 2c of the front plate, a second groove structure of the rear plate and second groove structures of the left side plate and the right side plate; above-mentioned first groove structure and second groove structure joint, also be intermeshing's flank of tooth structure, first groove structure and second groove structure are at bottom plate 1 and front bezel 2, left side board 3, the interior wall connection of right side board 4 and back plate 5, have strengthened bottom plate 1 and front bezel 2, left side board 3, the joint performance of right side board 4 and back plate 5, do not influence the staff simultaneously and weld at bottom plate 1 and front bezel 2, left side board 3, the outer wall junction of right side board 4 and back plate 5.
Preferably, in the above-mentioned stack box, the length of the outer step of the two-step structure is the same as the height of the bottom plate, so that the edge of the side plate is flush with the lower edge of the bottom plate; further preferably, the heights of the outer side steps and the inner side steps are the same, so that the clamping stability between the side plates can be improved.
The manufacturing method of the aluminum alloy galvanic pile box body provided by the embodiment comprises the following steps:
a machining center is adopted to preprocess a bottom plate and two pairs of side plates in a milling mode to form the structure of the bottom plate and the side plates, and the structure comprises the four sides of the preprocessed bottom plate 1 and the plane of the interior of a box body; preprocessing the plane of the periphery of the front plate 2, the first step structure, the second step structure and the interior of the box body; preprocessing the periphery of the left side plate 3, the first step structure, the second step structure and the plane of the interior of the box body; preprocessing the periphery of the right side plate 4, the first step structure, the second step structure and the plane of the interior of the box body; the periphery of the rear plate 5, the first step structure, the second step structure and the plane in which the box body is located are preprocessed;
assembling a box body: the four side plates are respectively clamped on the bottom surface, and simultaneously, the two side edges of the four side plates are mutually clamped; assembling a front plate 2, a left side plate 3, a right side plate 4 and a rear plate 5 with a bottom plate 1 through a second step at the bottom, and simultaneously ensuring that the first step structures at two sides of each side plate are clamped;
fixing the box body: the back of four curb plates provides the holding power towards the box direction respectively, fixes the box that is about to assemble on special fixture, and the bottom plate compresses tightly from the lateral surface with special fixture, and anchor clamps provide the pressure of a direction of box inboard, compresses tightly the bottom plate and makes the bottom plate step paste tightly with four curb plate complex steps.
The outer wall joints of the bottom plate 1, the front plate 2, the left side plate 3, the right side plate 4 and the rear plate 5 are welded in a stirring manner;
and taking the box body off the clamp.
In the manufacturing method, when the back surfaces of the front plate 2, the left side plate 3 and the right side plate 4 are all provided with the supports, the front plate 2 limits the horizontal movement of the left side plate 3 and the right side plate 4 vertically towards the front plate 2 direction and simultaneously limits the horizontal movement of the front plate 2 vertically towards the left side plate 3 or the right side plate 4 direction through the clamping connection of the first step structure 2b of the front plate with the first step structure 3a of the left side plate and the first step structure 4a of the right side plate. The both sides of back plate 5 are provided with the first stair structure 5a of the back plate along the vertical extension of the side of back plate 5, one side that left side board 3 and back plate 5 are connected is provided with the second stair structure 3b along the vertical extension of the side of left side board 3, one side that right side board 4 and back plate 5 are connected is provided with the second stair structure along the vertical extension of the side of right side board 4, the first stair structure 5a of back plate respectively with the second stair structure 3b of left side board and the second stair structure joint of right side board. Front bezel 2, left side board 3, when the back of right side board 4 and back plate 5 all was provided with the support, back plate 5 passes through the first stair structure 5a of back plate and the second stair structure 3b of left side board, the joint of the second stair structure of right side board, left side board 3 and the perpendicular horizontal migration towards 5 directions of back plate of right side board 4 have been restricted, the perpendicular horizontal migration towards 3 or 4 directions of right side board of back plate 5 has also been restricted simultaneously, to front bezel 2 through special fixture, left side board 3, the back of right side board 4 and back plate 5 supports, thereby make front bezel 2, left side board 3, produce the internal stress between right side board 4 and the back plate 5, the internal stress limits the function that has played the inner support frame each other.
In the manufacturing method, a third welding seam 8 is formed at the joint of the outer wall of the left side plate 3 and the bottom plate 1, a fourth welding seam 9 is formed at the joint of the outer wall of the right side plate 4 and the bottom plate 1, a first welding seam is formed at the joint of the outer wall of the front plate 2 and the bottom plate 1, the left side plate 3 and the right side plate 4, the first welding seam comprises a first straight seam 6a, a first turning seam 6b, a second straight seam 6c, a second turning seam 6d and a third straight seam 6e, the first straight seam 6a is located at the joint of the front plate 2 and the left side plate 3, the first turning seam 6b is located at the joint of the bottom plate 1, the front plate 2 and the left side plate 3, the second straight seam 6c is located at the joint of the bottom plate 1 and the front plate 2, the second turning seam 6d is located at the joint of the bottom plate 1, the front plate 2 and the right side plate 4, and the third straight seam 6e is located at the joint of the front plate 2 and the right side plate 4; the outer wall of back plate 5 and bottom plate 1, the junction of left side board 3 and right side board 4 has formed the second welding seam, the second welding seam is including fourth straight joint 7a, the third turns seam 7b, fifth straight joint 7c, the fourth turns seam 7d and sixth straight joint 7e, fourth straight joint 7a is located the left side board 3 and the 5 junction of back plate, the third turns seam 7b and is located bottom plate 1, the junction of left side board 3 and back plate 5, fifth straight joint 7c is located bottom plate 1 and the 5 junction of back plate, fourth turns seam 7d and is located bottom plate 1, the junction of right side board 4 and back plate 5, sixth straight joint 7e is located the junction of right side board 4 and back plate 5.
The robot welds a first welding line, a second welding line, a third welding line 8 and a fourth welding line 9 through stirring friction, a stirring head enters from one end of the third welding line 8 and exits from the other end of the third welding line 8, then enters from one end of the fourth welding line 9 and exits from the other end of the fourth welding line 9, then enters from the head end of the first straight seam 6a, and is welded along the sequence of the first straight seam 6a, the first turning seam 6b, the second straight seam 6c, the second turning seam 6d and the third straight seam 6e and exits from the tail end of the third straight seam 6 e; and finally, the stirring head enters from the head end of the fourth straight seam 7a, is stirred and welded along the sequence of the fourth straight seam 7a, the third turning seam 7b, the fifth straight seam 7c, the fourth turning seam 7d and the sixth straight seam 7e and exits from the tail end of the sixth straight seam 7e, and the outer wall seam is welded along the welding seam, so that the welding efficiency of friction stir welding can be improved.
In the manufacturing method, after the box body is taken down from the clamp, the steps of removing redundant materials and welding flashes of the box body are further included, and workers remove the redundant materials and the welding flashes on the edge of the box body through a grinding machine, so that the appearance requirement of leaving a factory is met.
In the manufacturing method, the preprocessing step of the bottom plate 1 and the side plates further comprises the steps that a plurality of first groove body structures which are uniformly distributed are arranged on the edge of one surface of the bottom plate 1 facing the two pairs of side plates; and the second groove body structures clamped with the first groove body structures are arranged at the inner side steps of the second step structures of the side plates respectively, so that the first groove body structures are meshed with the second groove body structures. Through the meshing reinforcing bottom plate 1 and front bezel 2 of first cell body structure and second cell body structure, left side board 3, the interact power between right side board 4 and the back plate 5, first cell body structure and second cell body structure hide in bottom plate 1, front bezel 2, left side board 3, the junction of right side board 4 and back plate 5, do not influence the level and smooth of box inner wall, do not influence the welding at bottom plate 1 simultaneously, front bezel 2, left side board 3, the outer wall seam crossing of right side board 4 and back plate 5 yet.
The operating principle of the pile box that this embodiment provided:
Example 2
The embodiment provides an aluminum alloy electric pile box body, which is different from the electric pile box body provided by the embodiment 1 in that only two side edges of one pair of side plates are provided with first step structures, and two side edges of two pairs of side plates are mutually clamped, specifically, the side plate of the pair without the first step structure at the edge is clamped and embedded into the first step structure at the two side edges of the other pair of side plates, and a welding seam is arranged at the clamping position; in addition, the bottom edges of the two pairs of side plates are respectively provided with a second step structure which is respectively clamped at the edge of the bottom plate, and a welding seam is arranged at the clamping position; it will be appreciated that the bottom edge of the pair of side panels which do not have the first step formation on the edge is of the same length as the first step formation which is snap-fit into the side edges of the other pair of side panels.
According to the aluminum alloy galvanic pile box body provided by the embodiment, the edges of the side plates and the edges of the bottoms of the side plates and the bottom plate are connected by the friction stir welding seams, so that the defects of screw looseness, thread corrosion, sealant aging and large screw installation space requirement are overcome; in addition, in the forming process of the pile box body, the bottom plate, the front plate, the left side plate, the right side plate and the rear plate are mutually clamped to replace the inner support frame, so that the defects of troublesome disassembly and assembly, low efficiency and high cost of the inner support frame are overcome.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.
Claims (9)
1. A stack case, comprising:
the bottom plate and two pairs of side plates which are respectively arranged oppositely;
two side edges of at least one pair of side plates are provided with first step structures;
the edges of two sides of two pairs of side plates are mutually clamped, and welding seams are arranged at the clamping positions;
the bottom edge of the side plate is provided with a second step structure, the second step structures are respectively clamped at the edge of the bottom plate, and a welding seam is arranged at the clamping position.
2. The stack tank of claim 1 wherein the weld is a friction stir weld.
3. The stack cassette of claim 1 or 2, wherein the weld at the clamping joint is located on the outside of the cassette.
4. The stack case according to claim 1 or 2, wherein the bottom plate and the two pairs of side plates are aluminum alloy plate bodies, respectively.
5. The stack case according to claim 1 or 2, wherein two pairs of side plates comprise, a front plate and a rear plate, a left side plate and a right side plate; wherein, the both sides edge of front bezel and back plate, left side board and right side board all has first stair structure, and the both sides edge of two couples of curb plates all passes through first stair structure joint each other.
6. The stack case according to claim 5, wherein the first and second step structures are two-step structures including an outer step and an inner step, respectively.
7. The pile box body according to claim 6, wherein the edge of one side of the bottom plate facing the two pairs of side plates is provided with a plurality of first groove body structures which are uniformly distributed; and a second groove body structure clamped with the first groove body structure is arranged at the step position on the inner side of the second step structure.
8. The stack case according to claim 7, wherein the length of the outer step of the secondary step structure is the same as the height of the bottom plate.
9. The stack case according to claim 6, wherein the outside steps and the inside steps have the same height.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022854146 | 2020-12-01 | ||
| CN2020228541466 | 2020-12-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213878170U true CN213878170U (en) | 2021-08-03 |
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ID=77067146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022975923.2U Active CN213878170U (en) | 2020-12-01 | 2020-12-08 | Electric pile box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213878170U (en) |
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2020
- 2020-12-08 CN CN202022975923.2U patent/CN213878170U/en active Active
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Effective date of registration: 20230526 Address after: Room 3, No. 99, Shaojing Road, Kunshan Development Zone, Suzhou City, Jiangsu Province, 215333 Patentee after: Suzhou Wanzhi New Energy Technology Co.,Ltd. Address before: 215300 room 10, 188 Xijiang Road, Kunshan Development Zone, Suzhou City, Jiangsu Province Patentee before: KUNSHAN WORLD-WIDE SPECIAL WELDING CO.,LTD. |