CN211804498U - Battery bottom welding device and spot welding machine - Google Patents
Battery bottom welding device and spot welding machine Download PDFInfo
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- CN211804498U CN211804498U CN202020033050.0U CN202020033050U CN211804498U CN 211804498 U CN211804498 U CN 211804498U CN 202020033050 U CN202020033050 U CN 202020033050U CN 211804498 U CN211804498 U CN 211804498U
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Abstract
The utility model belongs to the technical field of battery manufacturing, in particular to a battery bottom welding device and a spot welding machine, wherein the battery bottom welding device comprises a frame, a lower welding table, an upper welding table, a lifting driving mechanism, a distance measuring instrument and a control device, and a working platform is arranged on the frame; the lower welding table is arranged on the working platform; the upper welding table is positioned right above the lower welding table, and an accommodating interval for accommodating the battery which is vertically arranged and is inserted with the welding pins is formed between the upper welding table and the lower welding table; the lifting driving mechanism is arranged on the working platform, and the driving end of the lifting driving mechanism is connected with the upper welding table and used for driving the upper welding table to move up and down; the distance measuring instrument is arranged on the working platform and positioned on the side of the upper welding table, and the detection end of the distance measuring instrument faces the accommodating space and is arranged at intervals for detecting the distance between the distance measuring instrument and the top of the welding needle; the lifting driving mechanism and the range finder are electrically connected with the control device. This battery bottom welding device need not the length of artifical selection welding pin, and the efficiency of production is higher, and the production obtains the high quality of battery.
Description
Technical Field
The utility model belongs to the technical field of the battery preparation, especially, relate to a battery bottom welding device and spot welder.
Background
Spot welding is an indispensable process of battery trade, and every link of connecting from electric core to PACK equipment all leaves the spot welding, and the quality of spot welding directly influences the quality of battery. Spot-bottom welding is to connect the tab of the battery cell and the bottom case together, and generally welding operation is carried out by using a welding needle; in the actual manufacturing process, because the spot welding machine can not adjust according to the length of the welding pin, the welding pin with the proper length needs to be manually selected before welding so as to ensure that a good welding effect is achieved between the lug and the bottom shell, but the manual selection efficiency is low, and the production efficiency of the battery is seriously reduced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a battery bottom welding device and spot welder aims at solving the artifical technical problem who selects the welding needle and cause production efficiency low among the prior art.
In order to achieve the above object, the utility model adopts the following technical scheme: a battery bottom welding device comprises a rack, a lower welding table, an upper welding table, a lifting driving mechanism, a distance measuring instrument and a control device, wherein a working platform is arranged on the rack; the lower welding table is arranged on the working platform; the upper welding table is positioned right above the lower welding table, and an accommodating interval for accommodating batteries which are vertically arranged and are inserted with welding pins is formed between the upper welding table and the lower welding table; the lifting driving mechanism is arranged on the working platform, and a driving end of the lifting driving mechanism is connected with the upper welding table and is used for driving the upper welding table to move up and down; the distance measuring instrument is arranged on the working platform and positioned on the side of the upper welding table, and the detection end of the distance measuring instrument faces the accommodating space and is arranged at intervals so as to be used for detecting the distance between the distance measuring instrument and the top of the welding needle; the lifting driving mechanism and the range finder are electrically connected with the control device.
Optionally, the detection end of the distance meter and the lower bottom surface of the upper welding table are located in the same horizontal plane.
Optionally, the lifting driving mechanism is a lifting electric cylinder.
Optionally, the distance meter is a laser length meter.
Optionally, the battery bottom welding device further comprises a mounting frame, the mounting frame comprises a first horizontal plate, a first vertical plate and a mounting seat, the first horizontal plate is mounted on the working platform, the first vertical plate is located on the side of the accommodating space, the lower end of the first vertical plate is connected with the first horizontal plate, and the mounting seat is mounted on the side surface of the first vertical plate and located at the upper end of the first vertical plate; the lifting driving mechanism is arranged on the mounting seat.
Optionally, the battery bottom welding device further comprises a fixing frame, the fixing frame comprises a second horizontal plate, a second vertical plate and a third horizontal plate, the second horizontal plate is installed on the working platform, the second vertical plate is located on the side of the containing space, the lower end of the second vertical plate is connected with the second horizontal plate, the third horizontal plate is connected with the upper end of the second vertical plate, and the distance measuring instrument is installed on the third horizontal plate.
Optionally, the working platform is provided with a battery conveying channel, a defective product channel and a first reversing device, the lower welding table is installed on the bottom surface of the battery conveying channel, the defective product channel is perpendicular to the battery conveying channel and is communicated with the battery conveying channel, and the lower welding table and the defective product channel are sequentially arranged along the conveying direction of the battery conveying channel; the first reversing device is arranged on one side, opposite to the defective product channel, of the battery conveying channel, the first reversing device is arranged opposite to the defective product channel and used for pushing a defective battery into the defective product channel, and the first reversing device is electrically connected with the control device.
Optionally, the work platform is further provided with a battery feeding channel and a second reversing device, the battery feeding channel is perpendicular to the battery conveying channel and is communicated with the battery conveying channel, the second reversing device is installed on one side, back to the battery feeding channel, of the battery conveying channel, the second reversing device is opposite to the battery conveying channel and is used for pushing the battery into the battery conveying channel, and the second reversing device is electrically connected with the control device.
Optionally, the first reversing device and the second reversing device are both reversing electric cylinders.
The utility model provides an above-mentioned one or more technical scheme in the battery end welding device have one of following technological effect at least: when the welding device is used, the battery inserted with the welding pins is placed on the lower welding table and positioned in the containing interval, at the moment, the welding pins of the battery are arranged upwards and face the upper welding table, the detection end of the distance measuring instrument detects the distance value from the tops of the welding pins to the distance measuring instrument and feeds the distance value back to the control device, therefore, under the condition that the distance between the upper welding table and the distance measuring instrument is known, the control device can analyze and calculate the distance value between the upper welding table and the tops of the welding pins according to the detected distance value and control the lifting driving mechanism to drive the upper welding table to move downwards by the distance value, the accurate top contact of the welding pins of the upper welding table is ensured, and the bottom welding of the battery is realized; this battery bottom welding device is when the welding needle to different length then, can automatic measure and calculate the actual distance value of last welding stage apart from the top of welding needle, and can be according to the distance value real-time adjustment last welding stage move down the distance, avoid because of last welding stage under the pressure welding needle tension or the resistance difference that leads to the fact the battery too loose, guarantee the quality of battery effectively, and simultaneously, also need not the length of artifical welding needle of selecting, make the efficiency of battery production higher, promote the productivity, and the production obtains the high quality of battery.
The utility model discloses another technical scheme be: a spot welding machine comprises the battery bottom welding device.
Specifically, the utility model discloses a spot welder, owing to adopted foretell battery end welding device, so when the welding needle to different length, this spot welder can automatic measure and calculate the actual distance value at the top of welding stage apart from the welding needle, and can adjust the distance that moves down of welding stage in real time according to this distance value, avoid because of last welding stage under press the welding needle too tightly or too loose and cause the resistance difference of battery, guarantee the quality of battery effectively, and simultaneously, also need not the artifical length of selecting the welding needle, make the efficiency of battery production higher, promote the productivity, and the production obtains the high quality of battery.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.
Fig. 1 is a schematic structural diagram of a battery bottom welding device provided by an embodiment of the present invention.
Fig. 2 is a sectional view taken along line a-a in fig. 1.
Wherein, in the figures, the respective reference numerals:
11-working platform 12-battery conveying channel 13-defective product channel
14-first reversing device 15-battery feed channel 20-lower welding table
30-upper welding table 40-lifting driving mechanism 50-range finder
60-mounting bracket 61-first horizontal plate 62-first vertical plate
63-mounting seat 70-fixing frame 71-second horizontal plate
72-second vertical plate 73-third horizontal plate 80-Battery
81-welding pins 90-accommodating space.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to fig. 1-2 are exemplary and intended to be used to illustrate the invention, but should not be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
As shown in fig. 1-2, in an embodiment of the present invention, a battery bottom welding device is provided, including:
the device comprises a frame, wherein a working platform 11 is arranged on the frame;
a lower welding table 20 mounted on the work platform 11; the frame is the installation base body of each part.
An upper welding table 30 positioned right above the lower welding table 20, and an accommodating interval 90 for accommodating the battery 80 which is vertically arranged and is inserted with the welding pins 81 is formed between the upper welding table 30 and the lower welding table 20;
the lifting driving mechanism 40 is arranged on the working platform 11, and the driving end of the lifting driving mechanism 40 is connected with the upper welding table 30 and is used for driving the upper welding table 30 to move up and down;
the distance measuring instrument 50 is arranged on the working platform 11 and located on the side of the upper welding table 30, and the detection end of the distance measuring instrument 50 is arranged towards the accommodating space 90 and used for detecting the distance between the distance measuring instrument 50 and the top of the welding needle 81;
the control device (not shown), the lifting driving mechanism 40 and the distance measuring device 50 are electrically connected to the control device.
Specifically, the utility model discloses a battery bottom welding device, during the use, the battery 80 that will peg graft and have welding pin 81 is placed on welding stage 20 down and is located holding interval 90, at this moment, welding pin 81 of battery 80 sets up and just to last welding stage 30, the detection end of distancer 50 detects the distance value L of top to distancer 50 of welding pin 81 and feeds back distance value L to controlling means, therefore, know the condition of the distance D between last welding stage 30 and distancer 50, controlling means can the analytical calculation according to detecting distance value L and draw distance value H between the top of last welding stage 30 and welding pin 81, and control lift actuating mechanism 40 drives and goes up welding stage 30 and move down this distance value H, guarantee to go up the top contact of welding stage 30 accurate welding pin 81, thereby realize the bottom welding of battery 80; when the battery bottom welding device aims at the welding pins 81 with different lengths, the actual distance value H between the upper welding table 30 and the top of the welding pin 81 can be automatically measured and calculated, the downward moving distance of the upper welding table 30 can be adjusted in real time according to the distance value H, the resistance difference of the battery 80 caused by the fact that the welding pin 81 is pressed down by the upper welding table 30 and is too tight or too loose is avoided, the quality of the battery 80 is effectively guaranteed, meanwhile, the length of the welding pin 81 does not need to be manually selected, the production efficiency of the battery 80 is higher, the productivity is improved, and the quality of the battery 80 obtained through production is good.
In this embodiment, it should be noted that, after the welding of the upper welding stage 30 is completed, the lifting driving mechanism 40 drives the upper welding stage 30 to move up to the preset position, at this time, the distance value D between the upper welding stage 30 and the distance meter 50 is constant, and the distance value D can be directly obtained through measurement, so that in the subsequent detection process of the battery 80, the distance value D between the upper welding stage 30 and the distance meter 50 does not need to be measured, and the constant distance value D is directly used. Specifically, the preset position may be a position corresponding to the upper welding table 30 when the lifting drive mechanism 40 is located at the limit position of the upward moving stroke.
In this embodiment, a circuit for realizing the welding operation is connected between the upper stage 30 and the lower stage 20.
In this embodiment, the control device (not shown) may be formed by integrating an electronic control component, an information processing center, and a data processing center. The control device may also be a PLC controller or a computer.
In another embodiment of the present invention, the range finder 50 of the battery bottom welding apparatus is provided with a detection end located in the same horizontal plane as the lower bottom surface of the upper welding stage 30. Specifically, before detection, the detection ends of the upper welding table 30 and the range finder 50 are located in the same horizontal plane, at this time, the detection ends of the upper welding table 30 and the range finder 50 and the top of the welding pin 81 are respectively located at the vertex of a right-angled triangle, and the distance value H between the top of the upper welding table 30 and the top of the welding pin 81 is directly calculated according to the pythagorean theorem of the right-angled triangle, so that the calculation method is simpler; and the distance value L between the upper welding table 30 and the distance measuring instrument 50 is more convenient and faster to measure.
In another embodiment of the present invention, the lifting driving mechanism 40 of the battery bottom welding device is a lifting electric cylinder. Specifically, the upper welding table 30 is installed on a piston rod of the lifting electric cylinder, and the piston rod of the lifting electric cylinder stretches back and forth, so that the upper welding table 30 moves up and down, the lifting structure is simple, the lifting precision of the lifting electric cylinder is high, and the welding quality of the battery 80 can be effectively improved.
In another embodiment of the present invention, the distance measuring device 50 of the battery bottom welding device is a laser length measuring device. Specifically, the detection precision of the laser length measuring instrument is high, and the actual distance value L between the top of the welding pin 81 and the laser length measuring instrument can be accurately detected, so that the distance value H, which is used for driving the upper welding table 30 to move downwards, is controlled by the control device to be high in precision, and the welding quality of the battery 80 is better.
In another embodiment of the present invention, referring to fig. 2, the battery bottom welding device of the battery bottom welding device further includes a mounting frame 60, the mounting frame 60 includes a first horizontal plate 61, a first vertical plate 62 and a mounting seat 63, the first horizontal plate 61 is mounted on the working platform 11, the first vertical plate 62 is located on the side of the accommodating space 90, the lower end of the first vertical plate 62 is connected to the first horizontal plate 61, and the mounting seat 63 is mounted on the side of the first vertical plate 62 and located at the upper end of the first vertical plate 62; the elevation drive mechanism 40 is attached to the mount 63. Specifically, the mounting frame 60 provides a mounting base for the lifting driving mechanism 40, and more specifically, the mounting seat 63 provides a mounting position for the lifting driving mechanism 40, so that the lifting driving mechanism 40 is stably and reliably mounted, and meanwhile, the second vertical plate 72 raises the mounting seat 63, so that the lower welding table 20 is ensured to be located above the lower welding table 20, and thus, an accommodating space 90 is formed between the upper welding table 30 and the lower welding table 20, and the accommodating space 90 provides a mounting space for the detection of the battery 80; the contact area of the first horizontal plate 61 and the working platform 11 is large, and the connection between the first vertical plate 62 and the working platform 11 is more stable and reliable, so that the up-and-down movement stability and reliability of the upper welding table 30 are good, and the welding quality is good.
Further, the first horizontal plate 61 and the first vertical plate are integrally formed, and the manufacturing is convenient.
Further, the mounting base 63 is installed on the first vertical plate through a fastener, the mounting base is convenient to disassemble and assemble, and a cylinder of the lifting electric cylinder is installed on the mounting base 63.
In another embodiment of the present invention, referring to fig. 2, the battery bottom welding device further includes a fixing frame 70, the fixing frame 70 includes a second horizontal plate 71, a second vertical plate 72 and a third horizontal plate 73, the second horizontal plate 71 is installed on the working platform 11, the second vertical plate 72 is located on the side of the accommodating space 90, the lower end of the second vertical plate 72 is connected to the second horizontal plate 71, the third horizontal plate 73 is connected to the upper end of the second vertical plate 72, and the distance meter 50 is installed on the third horizontal plate 73. Specifically, mount 70 provides the installation base member for distancer 50, second horizontal plate 71 is big with work platform 11's connection area, guarantee that second vertical board 72 can stable installation on work platform 11, the vertical setting of second vertical board 72, can raise third horizontal plate 73, thereby guarantee that distancer 50's sense terminal can detect the top of welding pin 81, distancer 50 installs on third horizontal plate 73, it is big to be connected the area between third horizontal plate 73 and the distancer 50, can stabilize support column third horizontal plate 73, make distancer 50's fixed reliable and stable, its measured distance value that obtains is more accurate, welding quality is better.
Further, the second horizontal plate 71, the second vertical plate 72 and the third horizontal plate 73 are integrally formed, and the manufacturing is convenient.
In another embodiment of the present invention, referring to fig. 1, a working platform 11 of the battery bottom welding device is provided with a battery conveying channel 12, a defective product channel 13 and a first reversing device 14, a lower welding table 20 is installed on the bottom surface of the battery conveying channel 12, the defective product channel 13 is perpendicular to the battery conveying channel 12 and is communicated with the battery conveying channel 12, and the lower welding table 20 and the defective product channel 13 are sequentially arranged along the conveying direction of the battery conveying channel 12; the first reversing device 14 is arranged on one side of the battery conveying channel 12 opposite to the defective product channel 13, the first reversing device 14 is arranged opposite to the defective product channel 13 and used for pushing the defective battery 80 into the defective product channel 13, and the first reversing device 14 is electrically connected with the control device. Specifically, when the battery 80 is conveyed to the lower welding table 20, the upper welding table 30 and the lower welding table 20 perform welding operation on the battery 80, after the welding operation is completed, the battery conveying channel 12 conveys the battery 80 backwards, if defective products exist in the battery 80 conveyed backwards, the defective products are conveyed to the first reversing device 14, the first reversing device 14 is started to push the defective products into the defective product channel 13, and accordingly defective product rejection is achieved.
Further, the upper welding station 30 is located above the battery conveying channel 12, and the fixing frame 70 and the mounting frame 60 are respectively located at two opposite sides of the battery conveying channel 12, and the layout is provided to facilitate the installation and arrangement of the components.
Further, still be equipped with the detection mechanism that is used for detecting battery 80 resistance on battery transfer passage 12, detection mechanism is located and welds between platform 30 and defective products passageway 13, detection mechanism and first switching-over device 14 all are connected with controlling means, detection mechanism examines and detects the resistance of battery 80 in battery transfer passage 12 in proper order, when detecting the defective products, detection mechanism feedback signal gives controlling means, controlling means starts first switching-over device 14 and pushes the defective products into in the defective products passageway 13 to realize the automation mechanized operation that battery 80 detected and rejected.
In another embodiment of the present invention, referring to fig. 1, the working platform 11 of the battery bottom welding device provided is further provided with a battery feeding channel 15 and a second reversing device (not shown), the battery feeding channel 15 is perpendicular to the battery conveying channel 12 and is communicated with the battery conveying channel 12, the second reversing device is installed on one side of the battery feeding channel 15 opposite to the battery conveying channel 12, the second reversing device is opposite to the battery conveying channel 12 and is used for pushing the battery 80 into the battery conveying channel 12, and the second reversing device is electrically connected to the control device. Specifically, the batteries 80 are sequentially placed in the battery feeding channel 15 to be conveyed, and when the batteries 80 are conveyed to the second reversing device, the second reversing device pushes the batteries 80 into the battery conveying channel 12, so that the reversing of the batteries 80 is realized, the conveying direction of the batteries 80 is bent, the arrangement of the battery bottom welding device is facilitated, and the arrangement is more compact.
In another embodiment of the present invention, the first reversing device 14 and the second reversing device of the battery bottom welding device are both reversing electric cylinders. Specifically, the piston rod of the reversing electric cylinder is pushed out, so that the conveying direction of the battery 80 is changed, and meanwhile, the piston rod of the reversing electric cylinder is pushed out to push the battery 80 to convey forwards, so that power is provided for conveying the battery 80.
In another embodiment of the present invention, a spot welding machine is provided, which includes the battery bottom welding device.
Specifically, the utility model discloses a spot welder, owing to adopted foretell battery end welding device, so when welding needle 81 to different length, can automatic measure and calculate the actual distance value H at last welding stage 30 apart from the top of welding needle 81, and can adjust the distance that moves down of last welding stage 30 in real time according to this distance value H, avoid because of last welding stage 30 pushes down welding needle 81 under the tight or too loose resistance difference that causes battery 80, guarantee battery 80's quality effectively, and simultaneously, also need not artifical length of selecting welding needle 81, make the efficiency of battery 80 production higher, promote the productivity, and the production obtains battery 80's of high quality.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A battery foot welding device, comprising:
the device comprises a rack, wherein a working platform is arranged on the rack;
the lower welding table is arranged on the working platform;
the upper welding table is positioned right above the lower welding table, and a containing interval for containing the battery which is vertically arranged and is inserted with the welding pins is formed between the upper welding table and the lower welding table;
the lifting driving mechanism is arranged on the working platform, and the driving end of the lifting driving mechanism is connected with the upper welding table and is used for driving the upper welding table to move up and down;
the distance measuring instrument is arranged on the working platform and positioned on the side of the upper welding table, and the detection end of the distance measuring instrument faces the accommodating space and is arranged at intervals so as to be used for detecting the distance between the distance measuring instrument and the top of the welding needle;
and the lifting driving mechanism and the range finder are electrically connected with the control device.
2. The battery bottom welding device according to claim 1, characterized in that: the detection end of the distance measuring instrument and the lower bottom surface of the upper welding table are located in the same horizontal plane.
3. The battery bottom welding device according to claim 1, characterized in that: the lifting driving mechanism is a lifting electric cylinder.
4. The battery bottom welding device according to claim 1, characterized in that: the distance measuring instrument is a laser length measuring instrument.
5. The battery bottom welding device according to any one of claims 1 to 4, characterized in that: the battery bottom welding device further comprises a mounting frame, the mounting frame comprises a first horizontal plate, a first vertical plate and a mounting seat, the first horizontal plate is mounted on the working platform, the first vertical plate is located on the side of the accommodating space, the lower end of the first vertical plate is connected with the first horizontal plate, and the mounting seat is mounted on the side face of the first vertical plate and located at the upper end of the first vertical plate; the lifting driving mechanism is arranged on the mounting seat.
6. The battery bottom welding device according to any one of claims 1 to 4, characterized in that: the battery bottom welding device further comprises a fixing frame, the fixing frame comprises a second horizontal plate, a second vertical plate and a third horizontal plate, the second horizontal plate is installed on the working platform, the second vertical plate is located on the side of the containing space, the lower end of the second vertical plate is connected with the second horizontal plate, the third horizontal plate is connected with the upper end of the second vertical plate, and the distance measuring instrument is installed on the third horizontal plate.
7. The battery bottom welding device according to any one of claims 1 to 4, characterized in that: the working platform is provided with a battery conveying channel, a defective product channel and a first reversing device, the lower welding table is installed on the bottom surface of the battery conveying channel, the defective product channel is perpendicular to the battery conveying channel and is communicated with the battery conveying channel, and the lower welding table and the defective product channel are sequentially arranged along the conveying direction of the battery conveying channel; the first reversing device is arranged on one side, opposite to the defective product channel, of the battery conveying channel, the first reversing device is arranged opposite to the defective product channel and used for pushing a defective battery into the defective product channel, and the first reversing device is electrically connected with the control device.
8. The battery bottom welding device according to claim 7, characterized in that: the working platform is further provided with a battery feeding channel and a second reversing device, the battery feeding channel is perpendicular to the battery conveying channel and is communicated with the battery conveying channel, the second reversing device is installed on one side, back to the battery conveying channel, of the battery feeding channel, the second reversing device is opposite to the battery conveying channel and is used for pushing the battery into the battery conveying channel, and the second reversing device is electrically connected with the control device.
9. The battery bottom welding device according to claim 8, characterized in that: the first reversing device and the second reversing device are both reversing electric cylinders.
10. A spot welder, characterized by: comprising the battery bottom welding device according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020033050.0U CN211804498U (en) | 2020-01-07 | 2020-01-07 | Battery bottom welding device and spot welding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020033050.0U CN211804498U (en) | 2020-01-07 | 2020-01-07 | Battery bottom welding device and spot welding machine |
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| Publication Number | Publication Date |
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| CN211804498U true CN211804498U (en) | 2020-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020033050.0U Active CN211804498U (en) | 2020-01-07 | 2020-01-07 | Battery bottom welding device and spot welding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211804498U (en) |
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2020
- 2020-01-07 CN CN202020033050.0U patent/CN211804498U/en active Active
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