CN216938957U - Laser welding copper nozzle for lithium battery and welding equipment - Google Patents
Laser welding copper nozzle for lithium battery and welding equipment Download PDFInfo
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- CN216938957U CN216938957U CN202220407916.9U CN202220407916U CN216938957U CN 216938957 U CN216938957 U CN 216938957U CN 202220407916 U CN202220407916 U CN 202220407916U CN 216938957 U CN216938957 U CN 216938957U
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Abstract
The utility model provides a laser welding copper nozzle for a lithium battery and welding equipment, wherein the laser welding copper nozzle comprises a copper nozzle body, a laser channel is arranged on the copper nozzle body, a laser inlet and a laser outlet which are communicated with the laser channel are respectively arranged at two ends of the copper nozzle body, and a gas channel is arranged on the copper nozzle body; the gas channel comprises a gas inlet channel, an annular channel and a gas outlet channel; one end of the air inlet channel is communicated with an external protective air source; the annular channel is arranged around the laser channel and is communicated with the other end of the air inlet channel; the gas outlet channels are arranged at intervals along the circumferential direction of the laser channel, one end of each gas outlet channel is communicated with the annular channel, and the other end of each gas outlet channel extends to the laser outlet and is communicated with the laser channel. According to the laser welding copper nozzle, the laser channel and the gas channel are arranged on the copper nozzle body, the directions of the channels are reasonably arranged, the uniformity of the protective gas blowing to the welding area can be improved in the laser welding process, and the welding quality is improved.
Description
Technical Field
The utility model relates to the technical field of laser welding, in particular to a laser welding copper nozzle for a lithium battery, and meanwhile, the utility model also relates to welding equipment adopting the laser welding copper nozzle.
Background
With the rapid development of the lithium battery industry in recent years, the requirements for assembling automatic equipment are higher and higher, and the requirements for manufacturing efficiency and quality are also more and more strict. Among the lithium electric automation equipment, laser welding's application is comparatively extensive, and laser welding's process is also mostly key process, therefore the quality requirement is higher. In the process of welding the electrode lug and the cover plate by laser, a welding copper nozzle generally needs to be abutted against an object to be welded, and meanwhile, protective gas is blown to a welding area, so that the design of the welding copper nozzle plays an important role in the welding quality. However, due to the unreasonable design, the existing welding copper nozzle is difficult to make the protective gas uniformly cover the welding area during welding, so that the welding quality is poor.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention is directed to a laser welding copper nozzle for a lithium battery, so as to improve the uniformity of the shielding gas blowing up the welding area in the laser welding process and improve the welding quality.
In order to achieve the purpose, the technical scheme of the utility model is realized as follows:
a laser welding copper nozzle for a lithium battery comprises a copper nozzle body, wherein a laser channel is arranged on the copper nozzle body, a laser inlet and a laser outlet which are communicated with the laser channel are respectively arranged at two ends of the copper nozzle body, and a gas channel which is communicated with an external protective gas source is arranged on the copper nozzle body; the gas channel comprises a gas inlet channel, an annular channel and a gas outlet channel; one end of the air inlet channel is communicated with the external protective air source; the annular channel is arranged around the laser channel and is communicated with the other end of the air inlet channel; the gas outlet channels are arranged along the circumferential direction of the laser channel at intervals, one end of each gas outlet channel is communicated with the annular channel, and the other end of each gas outlet channel extends to the laser outlet and is communicated with the laser channel.
Furthermore, the number of the air inlet channels is two, and the two air inlet channels are respectively arranged on two opposite sides of the laser channel.
Further, the gas outlet channels are divided into two groups which are arranged on two opposite sides of the laser channel; each group of the air outlet channels are at least two uniformly distributed.
Furthermore, a dust removal channel is arranged on the copper nozzle body, one end of the dust removal channel is communicated with the laser channel, and the other end of the dust removal channel extends to the end face, provided with the laser inlet, of the copper nozzle body so as to be communicated with external dust removal equipment; and an included angle is formed between the dust removal channel and the laser channel.
Furthermore, the copper nozzle body is provided with one end of the laser inlet and is provided with a positioning part to be matched with a pressing mechanism of external welding equipment, so that the copper nozzle body is positioned on the external welding equipment.
Furthermore, one end of the copper nozzle body, which is provided with the laser inlet, is provided with a flange which extends outwards in the radial direction; the positioning part comprises a positioning hole arranged on the flange.
Further, along keeping away from the direction of laser import, the copper nozzle body is equipped with the outline of the one end of welding export sets up that diminishes gradually.
Furthermore, the copper nozzle body is composed of a first split body and a second split body which are detachably connected, the laser inlet is formed in the first split body, and the laser outlet is formed in the second split body.
Further, the first split body and the second split body are detachably connected together through a thread pair.
Compared with the prior art, the utility model has the following advantages:
(1) according to the laser welding copper nozzle, the laser channel and the gas channel are arranged on the copper nozzle body, the directions of the channels are reasonably arranged, the uniformity of the protective gas blowing to the welding area can be improved in the laser welding process, and the welding quality is improved.
(2) Be equipped with dust removal passageway on the copper nozzle body, can use outside dust collecting equipment to take out the metal vapour and the molten liquid that produce when welding through the negative pressure, guarantee that the welding department is clean, improve welding quality.
(3) The one end that the copper mouth body was equipped with the laser import is equipped with location portion, can make the copper mouth body pass through outside welding equipment self hold-down mechanism, is positioned outside welding equipment on, can be convenient for weld the dismouting of copper mouth on welding equipment.
(4) The copper nozzle body is provided with a flange extending outwards in the radial direction, and the positioning portion is a positioning hole formed in the flange, so that the structure is simple, and design and implementation are facilitated.
(5) The outline of the copper nozzle body is gradually reduced, and the copper nozzle body can be matched with the structure of a welding position, so that the space occupation of the welding copper nozzle is reduced.
(6) The copper nozzle body consists of a first sub-body and a second sub-body which are detachably connected, and the second sub-body which is worn and dirty can be conveniently replaced.
(7) The first split body and the second split body are connected together through the thread pair, so that the structure is simple, and the design and implementation are convenient.
Another object of the present invention is to provide a welding device for lithium battery, which employs the above laser welding copper nozzle.
Compared with the prior art, the welding equipment and the laser welding copper nozzle have the same beneficial effects, and are not described again.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation of the utility model. In the drawings:
fig. 1 is a schematic structural view of a copper nozzle body according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of a copper nozzle body according to another view angle in the first embodiment of the present invention;
fig. 3 is a front view of a first split body according to a first embodiment of the present invention;
fig. 4 is a schematic view of a first split according to a first embodiment of the present invention from a viewing angle;
fig. 5 is a back view of the first sub-body according to the first embodiment of the present invention;
fig. 6 is a schematic view of the first sub-body from another view according to the first embodiment of the present invention;
FIG. 7 is a front view of a second section according to a first embodiment of the present invention;
FIG. 8 is a schematic view of a second segment according to a first embodiment of the present invention from a viewing angle;
FIG. 9 is a rear view of a second section according to a first embodiment of the present invention;
FIG. 10 is a schematic view of a second segment from another perspective according to the first embodiment of the utility model;
FIG. 11 is a sectional view taken along line A-A of FIG. 3;
FIG. 12 is a sectional view taken along line B-B of FIG. 3;
fig. 13 is a sectional view taken along line C-C of fig. 2.
Description of reference numerals:
1. a first split body; 101. a flange; 102. positioning holes; 103. increasing the complement; 104. a first connection hole;
2. a second body; 201. a second connection hole;
3. a laser channel;
401. an air inlet channel; 402. a circular track; 403. an air outlet channel;
5. a dust removal channel.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "back", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In addition, in the description of the present invention, the terms "mounted," "connected," and "connecting" are to be construed broadly unless otherwise specifically limited. For example, the connection can be fixed, detachable or integrated; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. To those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in conjunction with specific situations.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Example one
The embodiment relates to a laser welding copper nozzle for lithium cell, and this laser welding copper nozzle includes the copper nozzle body, is equipped with laser channel 3 on the copper nozzle body, and the both ends of copper nozzle body are equipped with laser inlet and the laser outlet who communicates with laser channel 3 respectively to be equipped with the gas passage who is used for with outside protection air supply intercommunication on the copper nozzle body. Wherein the gas channel comprises an inlet channel 401, an annular channel 402 and an outlet channel 403; one end of the air inlet channel 401 is communicated with an external protective air source; the annular channel 402 is arranged around the laser channel 3 and communicated with the other end of the air inlet channel 401; the gas outlet channels 403 are arranged at intervals along the circumferential direction of the laser channel 3, and one end of each gas outlet channel 403 is communicated with the annular channel 402, and the other end extends to the laser outlet and is communicated with the laser channel 3.
The laser welding copper nozzle of this embodiment through set up laser passageway 3, gas passage at the copper nozzle body, each passageway trend more than the rational arrangement can improve the homogeneity that the protective gas blows to the welding area in the laser welding process, improves welding quality.
Based on the above general description, an exemplary structure of the laser welding copper nozzle of the present embodiment is shown in fig. 1, as described above, the laser welding copper nozzle of the present embodiment may be used in a welding process of a power lithium battery, and a tab and a cover plate need to be welded and fixed in an assembly process of a lithium battery cell. Adapted in the electric core utmost point ear of lithium cell module, a plurality of laser welding copper mouths constitute the array, support and press in utmost point ear top, make the laser outlet aim at and wait to weld the position, and laser passes 3 directionalities electric core utmost point ears of laser passageway, makes utmost point ear and apron welded fastening.
As shown in fig. 1 and 2, the copper nozzle body of the present embodiment is composed of a first division body 1 and a second division body 2 which are detachably connected, and the first division body 1 and the second division body 2 are detachably connected together through a screw pair. First components of a whole that can function independently 1 and second components of a whole that can function independently 2 splice mutually and form continuous laser passageway 3, and laser passageway 3 establishes into the straight line passageway, and the cross-section is the rectangle, runs through in the copper nozzle body, and on first components of a whole that can function independently 1 was located to the laser import, on second components of a whole that can function independently 2 was located to the laser export, made laser import and laser export be located the both ends of copper nozzle body respectively, and the laser beam accessible laser passageway 3 directive electric core utmost point ear that external welding mechanism jetted out. When welding utmost point ear and apron, in order to cooperate the structure of welding department, reduce the welding copper nozzle space and occupy, the copper nozzle body of this embodiment is along the direction of keeping away from the laser import, and the outline that is equipped with the one end of welding export gradually diminishes and sets up.
During welding, one end of a laser outlet of the second sub-body 2 is pressed above the lug, and the second sub-body 2 can be detached and replaced if the second sub-body 2 is abraded after multiple times of welding. The screw thread pair for connecting the first split body 1 and the second split body 2 can be specifically designed into screw thread holes matched in position, the first split body 1 is provided with a first connecting hole 104, the second split body 2 is provided with a second connecting hole 201, and the first connecting hole 104 and the second connecting hole 201 are identical in aperture size. As shown in fig. 5, 6, 9 and 10, the first connection hole 104 is a counterbore penetrating through the first split body 1; the second connection hole 201 is a threaded blind hole. The first and second division bodies 1 and 2 are fixed to the second division body 2 by bolts through the first connection holes 104. The first connection holes 104 and the second connection holes 201 of the present embodiment are respectively provided with four, and are distributed around the laser channel 3.
In order to avoid the oxidation of the workpiece in the welding process, protective gas needs to be blown to the welding position in the laser welding process, and the protective gas can be argon, nitrogen and other gases. As shown in fig. 3 and 4, the laser welding copper nozzle of the present embodiment is provided with a gas channel on the copper nozzle body, and the gas channel includes an inlet channel 401, an annular channel 402 and an outlet channel 403. The inlet channel 401 is adapted to communicate with an external source of shielding gas. An external shielding gas source is communicated with the gas inlet channel 401, and shielding gas enters from the gas inlet channel 401, passes through the annular channel 402 and is blown out from the gas outlet channel 403.
As shown in fig. 3 and 4, the number of the air inlets 401 of the laser welding copper nozzle of the present embodiment is two, and the two air inlets are respectively disposed on two opposite sides of the laser channel 3, specifically near the outer sides of two narrow sides of the laser inlet. The inlet of the inlet channel 401 is provided with a port for connection to an external source of protective gas in order to be adapted to the port of the external source of protective gas. The two air inlets 401 of the present embodiment extend in the direction parallel to the laser passage 3 until penetrating the first sub-body 1.
As shown in fig. 5 and 6, the annular duct 402 of the present embodiment is formed into a substantially rectangular closed ring shape, the annular duct 402 radially outwardly projects at its two narrow sides disposed opposite to each other to communicate with the air inlet duct 401, and the annular surface of the annular duct 402 is disposed orthogonally to the laser passage 3. The annular channel 402 is located on the end face of the first sub-body 1 attached to the second sub-body 2, and may be shaped as a groove surrounding the laser channel 3, and when the first sub-body 1 and the second sub-body 2 are connected in a fitting manner, the groove top is covered by the second sub-body 2 to form a tubular annular channel.
As shown in fig. 7 and 8, the gas outlet channels 403 are arranged at intervals along the circumferential direction of the laser channel 3, one end of each gas outlet channel 403 is communicated with the annular channel 402, and the gas outlet channels 403 are led out from two long sides of the annular channel 402, extend in a direction parallel to the laser channel 3, and reach the laser outlet. The two opposite long sides of the laser channel 3 near the laser exit are radially flared to communicate with the exit channel 403. As shown in fig. 9 and 10, the outlet channels 403 of the present embodiment are divided into two groups disposed on two opposite sides of the laser channel 3, each group of outlet channels 403 is at least two uniformly distributed, preferably, each group of outlet channels 403 of the present embodiment is four with the same pitch, and the cross-sectional area of each outlet channel 403 is slightly smaller than that of the inlet channel 401 and the annular channel 402, so that the gas flow rates of each gas channel are equivalent.
As shown in fig. 11, 12 and 13, the external shielding gas source simultaneously supplies shielding gas to two gas inlets 401 during the welding process. The shielding gas enters from the gas inlet channel 401, the direction of the gas flow is parallel to the laser channel 3, the shielding gas turns vertically after passing through the annular channel 402, and the shielding gas turns vertically again after passing through the gas outlet channel 403 and blows towards the laser channel 3. The gas channel of this embodiment is rationally arranged, makes the protective gas turn to the even laser channel 3 and welding point of blowing after twice.
In order to improve the use effect, the copper nozzle body of the embodiment is provided with the dust removal channel 5, one end of the dust removal channel 5 is communicated with the laser channel 3, and the other end of the dust removal channel 5 extends to the end face of the copper nozzle body provided with the laser inlet, is specifically positioned near the long edge of the laser inlet, and is communicated with external dust removal equipment; and the dust removal channel 5 and the laser channel 3 are arranged at an included angle. As shown in fig. 3 and 4, the dust removing passage 5 of the present embodiment is a circular straight passage, and one end communicating with the laser passage 3 is located at the middle of the laser passage 3, and one end on the end surface of the laser inlet is located near the long side of the laser inlet. In order to be matched with an interface of external dust removing equipment, a circular groove is arranged on the surrounding structure of the opening of the dust removing channel 5. In the welding process, external dust removing equipment can be used for pumping out metal vapor and molten liquid generated in welding through negative pressure, and the cleanness of a welding part is ensured.
In order to ensure that the copper nozzle body has sufficient design strength and the dust removal channel 5 is continuous, as shown in fig. 1 and 5, in this embodiment, an increasing body 103 is disposed on the copper nozzle body, and the increasing body 103 is specifically located in the middle of one side of the first sub-body 1 close to the dust removal channel 5 and can be configured into a boss-shaped structure. Of course, the inner wall of the dust removing channel 5 is far enough from the edge of the copper nozzle body, and the complement 103 may not be provided when the strength of the copper nozzle body is enough.
The one end that the copper mouth body was equipped with laser inlet is equipped with location portion to the hold-down mechanism (not marked in the figure) of cooperation external welding equipment self, and is located the copper mouth body on external welding equipment, makes the position accuracy location of copper mouth body in treating the welding department. For this purpose, as shown in fig. 3, 4, 5 and 6, a radially outward-extending flange 101 is provided at one end of the first split body 1 of the copper nozzle body, which is located at the laser inlet, and the positioning portion includes a positioning hole 102 provided in the flange 101. As shown in fig. 1 and 3, the two positioning portions of the present embodiment are arranged near the air inlet of the air inlet channel 401, respectively, with the central line of the laser inlet as the symmetry axis, and are specifically formed as circular through holes penetrating through the flanges 101 on the first sub-body 1. The external welding equipment is prepositioned with the copper nozzle body through the positioning part, and the copper nozzle body is fixedly connected with the external welding equipment through the pressing mechanism of the external welding equipment.
The laser welding copper nozzle of this embodiment through adopting above-mentioned structure, sets up laser passageway 3, gas passage at the copper nozzle body, and each passageway trend of rational arrangement makes utmost point ear and apron laser welding process in, can effectively improve the homogeneity that the protective gas blows to the welding area to can improve welding quality.
Example two
The embodiment relates to a welding device for a lithium battery, which adopts a laser welding copper nozzle with the first embodiment. According to the welding equipment, the copper nozzle is welded by the laser in the first embodiment, so that the shielding gas can improve the covering uniformity of a welding area in the laser welding process of the lug and the cover plate, and the welding quality can be improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The utility model provides a laser welding copper mouth for lithium cell which characterized in that:
the copper nozzle comprises a copper nozzle body, wherein a laser channel (3) is arranged on the copper nozzle body, a laser inlet and a laser outlet which are communicated with the laser channel (3) are respectively arranged at two ends of the copper nozzle body, and a gas channel which is communicated with an external protective gas source is arranged on the copper nozzle body;
wherein the gas channel comprises an inlet channel (401), an annular channel (402) and an outlet channel (403);
one end of the air inlet channel (401) is communicated with the external protective air source;
the annular channel (402) is arranged around the laser channel (3) and is communicated with the other end of the air inlet channel (401);
the gas outlet channels (403) are arranged at intervals along the circumferential direction of the laser channel (3), one end of each gas outlet channel (403) is communicated with the annular channel (402), and the other end of each gas outlet channel extends to the laser outlet and is communicated with the laser channel (3).
2. The laser welded copper nozzle for lithium batteries according to claim 1, characterized in that:
the number of the air inlet channels (401) is two, and the two air inlet channels (401) are respectively arranged on two opposite sides of the laser channel (3).
3. The laser welded copper nozzle for lithium batteries according to claim 1, characterized in that:
the gas outlet channels (403) are respectively arranged in two groups at two opposite sides of the laser channel (3);
each group of the air outlet channels (403) is at least two uniformly distributed.
4. The laser welded copper nozzle for lithium batteries according to claim 1, characterized in that:
a dust removal channel (5) is arranged on the copper nozzle body, one end of the dust removal channel (5) is communicated with the laser channel (3), and the other end of the dust removal channel extends to the end face, provided with the laser inlet, of the copper nozzle body so as to be communicated with external dust removal equipment;
and the dust removal channel (5) and the laser channel (3) are arranged at an included angle.
5. The laser welded copper nozzle for lithium batteries according to claim 1, characterized in that:
the copper nozzle body is provided with the one end of laser import is equipped with location portion to the hold-down mechanism of cooperation external welding equipment self, and will the copper nozzle body is located on the external welding equipment.
6. The laser welded copper nozzle for lithium batteries according to claim 5, characterized in that:
one end of the copper nozzle body, which is provided with the laser inlet, is provided with a flange (101) which extends outwards in the radial direction;
the positioning part comprises a positioning hole (102) arranged on the flange (101).
7. The laser welded copper nozzle for lithium batteries according to claim 1, characterized in that:
along keeping away from the direction of laser import, the copper nozzle body is equipped with the outline of the one end of welding export sets up that diminishes gradually.
8. The laser welded copper nozzle for lithium batteries according to any of claims 1 to 7, characterized in that:
the copper nozzle body is composed of a first split body (1) and a second split body (2) which are detachably connected, the laser inlet is formed in the first split body (1), and the laser outlet is formed in the second split body (2).
9. The laser welded copper nozzle for lithium batteries according to claim 8, characterized in that:
the first split body (1) and the second split body (2) are detachably connected together through a thread pair.
10. A welding equipment for lithium cell which characterized in that: the welding equipment for the lithium battery adopts the laser welding copper nozzle for the lithium battery of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220407916.9U CN216938957U (en) | 2022-02-25 | 2022-02-25 | Laser welding copper nozzle for lithium battery and welding equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220407916.9U CN216938957U (en) | 2022-02-25 | 2022-02-25 | Laser welding copper nozzle for lithium battery and welding equipment |
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| Publication Number | Publication Date |
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| CN216938957U true CN216938957U (en) | 2022-07-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220407916.9U Active CN216938957U (en) | 2022-02-25 | 2022-02-25 | Laser welding copper nozzle for lithium battery and welding equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116493796A (en) * | 2023-06-20 | 2023-07-28 | 江苏烽禾升智能科技有限公司 | Blade battery busbar welding equipment |
| CN118682329A (en) * | 2024-08-26 | 2024-09-24 | 因湃电池科技有限公司 | Copper mouth connecting assembly, copper mouth changing device and copper mouth changing system |
-
2022
- 2022-02-25 CN CN202220407916.9U patent/CN216938957U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116493796A (en) * | 2023-06-20 | 2023-07-28 | 江苏烽禾升智能科技有限公司 | Blade battery busbar welding equipment |
| CN118682329A (en) * | 2024-08-26 | 2024-09-24 | 因湃电池科技有限公司 | Copper mouth connecting assembly, copper mouth changing device and copper mouth changing system |
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