Welding copper nozzle and welding plate

Abstract

The utility model relates to the field of chip welding, in particular to a welding copper nozzle and a welding plate, the welding copper nozzle comprises a copper nozzle frame and a base, and the copper nozzle frame is connected with the base; the copper nozzle frame is provided with a through hole, the base is provided with a through laser channel, and the laser channel is communicated with the through hole; a copper sleeve is arranged in the through hole in a matched mode and provided with a welding channel, and the welding channel communicates with the laser channel. The copper nozzle frame is provided with a first air channel and a second air channel, and the first air channel and the second air channel communicate with the welding channel. The first air channel and the second air channel can suck out welding smoke while blowing shielding gas to the welding channel, so that a good welding environment is always provided during bar welding, the bar surface welding quality is improved, and bar pseudo soldering is reduced; the welding plate comprises a plurality of welding copper nozzles and further comprises a connecting plate, a positioning part and a plurality of connecting parts are arranged on the connecting plate, any connecting part can be connected with the base in a matched mode, and the positioning part is used for being connected with the battery cell module in a limiting mode.

Description

Technical Field

[0001] The utility model relates to the field of bar welding, in particular to a welding copper nozzle and a welding plate. Background Art

[0002] The battery cells in the battery cell module need to be connected to each other through tabs. Laser welding is used between the battery cells and the tabs. Before welding, the tabs are abutted against the welding copper nozzle to make the battery cells and the tabs in close contact. Then, the tabs are irradiated with laser to weld the tabs to the battery cells.

[0003] However, the currently used welding copper nozzles have blowing and suction functions, but are unable to blow out protective gas to the welding points during welding, and are unable to promptly discharge the fumes generated by welding, resulting in poor welding quality on the surface of the bar and the risk of false welding.

[0004] Therefore, a technical solution is urgently needed to solve the technical problem that the currently used welding copper nozzles cannot blow protective gas and exhaust smoke. Utility Model Content

[0005] The utility model aims to provide a welding copper nozzle and a welding plate to solve the technical problem that the currently used welding copper nozzles cannot blow protective gas and exhaust smoke.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A welding copper nozzle, comprising a copper nozzle frame and a base, wherein the copper nozzle frame is connected to the base;

[0008] The copper nozzle frame is provided with a through hole, the base is provided with a through laser channel, and the laser channel is connected with the through hole; a copper sleeve is adapted to be provided in the through hole, the copper sleeve is provided with a welding channel, and the welding channel is connected with the laser channel;

[0009] The copper nozzle frame is provided with a first air channel and a second air channel, and both the first air channel and the second air channel are communicated with the welding channel.

[0010] The utility model discloses a welding copper nozzle, wherein a through hole is provided in a copper nozzle frame, and a copper sleeve is arranged in the through hole, so that the part of the copper sleeve protruding from the copper nozzle frame can push the bar piece; the welding channel is connected with the laser channel, and the welding laser can pass through the laser channel and the welding channel in sequence, so that the laser can directly irradiate the bar piece to realize welding of the bar piece; through the first air channel and the second air channel provided in the copper nozzle frame, one of the first air channel and the second air channel is used to blow a protective gas into the welding channel, and the other air channel sucks out the fume generated by welding from the welding channel, thereby improving the cleanliness of the surface of the bar piece while protecting the welding of the bar piece, ensuring the surface welding quality of the bar piece, reducing the false welding of the bar piece, and improving the overall quality of the battery cell module.

[0011] As a preferred solution of the utility model, the first gas channel is provided with a first gas channel opening, the second gas channel is provided with a second gas channel opening, and the first gas channel opening and the second gas channel opening are both located on the side wall of the welding channel. The first gas channel opening blows out protective gas into the welding channel, and the second gas channel opening sucks away the fume in the welding channel, or the second gas channel opening blows out protective gas into the welding channel, and the first gas channel opening sucks away the fume in the welding channel.

[0012] As a preferred solution of the utility model, the first airway opening and the second airway opening are respectively located on both sides of the welding channel; along the axial direction of the welding channel, the first airway opening and the second airway opening are staggered. By arranging the first airway opening and the second airway opening on both sides of the welding channel, a fixed-direction airflow is formed when the welding channel is inhaled and blown, which is convenient for smoke discharge, so that the protective gas can continuously protect the surface of the bar sheet, and the quality of welding is improved; because welding smoke will float upward, the first airway opening and the second airway opening are staggered, and the second airway opening is located above the first airway opening in the axial direction of the welding channel, which can better discharge smoke and reduce smoke escape.

[0013] As a preferred solution of the utility model, the copper nozzle frame is provided with a latch hole, and a limit latch for limiting the connection of the copper sleeve is arranged in the latch hole. The copper sleeve is fixed by the latch hole and the limit latch to prevent the copper sleeve from loosening from the through hole.

[0014] As a preferred solution of the utility model, the latch hole includes a first pin hole and a second pin hole, the limit latch includes a first latch and a second latch, the first latch is adapted to be connected with the first pin hole, and the second latch is adapted to be connected with the second pin hole; the first pin hole passes through the first airway, and the first latch is provided with an airflow channel, and the airflow channel can connect the first airway with the welding channel. The first pin hole and the second pin hole are respectively provided on both sides of the copper nozzle frame, and the copper sleeve is fixed by the first latch and the second latch; the first latch is designed to both fix the copper sleeve and connect the first airway with the welding channel.

[0015] As a preferred solution of the utility model, the copper sleeve comprises a tubular structure with a circular cross section. The cross section area of ​​the copper sleeve is selected according to the shape of the bar, and a tubular structure with a rectangular or fan-shaped cross section area can also be selected.

[0016] As a preferred solution of the utility model, the base is provided with an air suction channel and an air blowing channel, the air suction channel is connected with the first air channel, and the air blowing channel is connected with the second air channel. The welding channel is blown and inhaled through the air suction channel and the air blowing channel provided on the base, and the setting positions of the air supply pipeline and the air suction pipeline are changed, so that the arrangement of the air path is more reasonable, and the interference between the welding copper nozzle and the air path during use is avoided.

[0017] As a preferred solution of the utility model, the base is provided with a first rod body and a second rod body, the air suction channel axially penetrates the first rod body, and the air blowing channel axially penetrates the second rod body. The first rod body and the second rod body are adapted to be connected with the connecting plate, so that the air supply pipeline and the air suction pipeline can be arranged on the back of the connecting plate, avoiding the influence of the air supply pipeline and the air suction pipeline on the welding work.

[0018] As a preferred solution of the utility model, the first rod body and the second rod body are both columnar rods, the ends of the columnar rods are connected to the base, the columnar rods are provided with spring parts and connecting sleeves, the columnar rods pass through the spring parts and the connecting sleeves, one end of the spring part is connected to the base, and the other end is connected to the connecting sleeve; the connecting sleeve is slidably connected to the columnar rod. By providing the spring parts and the connecting sleeves, the downward pressing angle of the welding copper nozzle on the bar piece can be finely adjusted, so that the bar piece is in close contact with the battery cell to avoid cold welding.

[0019] A welding plate comprises several of the above-mentioned welding copper nozzles and a connecting plate, on which a positioning portion and several connecting portions are arranged, any of which can be adapted to be connected with the base, and the positioning portion is used for limiting connection with a battery module.

[0020] The utility model provides a welding plate, wherein a plurality of welding copper nozzles are arranged on a connecting plate, and the positions of the welding copper nozzles are adapted to the welding positions of the bar pieces; after the positioning portion is limitedly connected to the battery cell module, the welding copper nozzles press down the bar pieces to perform welding operations, and the welding channels are continuously blown and inhaled through the first air passage and the second air passage, so that the bar pieces are protected during welding and smoke can be discharged in time, thereby improving the welding quality of the bar pieces.

[0021] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0022] 1. A welding copper nozzle of the utility model has a through hole in the copper nozzle frame, and a copper sleeve is arranged in the through hole, so that the part of the copper sleeve protruding from the copper nozzle frame can push the bar piece; it is connected with the laser channel through the welding channel, and the welding laser can pass through the laser channel and the welding channel in sequence, so that the laser can directly irradiate the bar piece to achieve welding of the bar piece; through the first air channel and the second air channel opened in the copper nozzle frame, one of the first air channel and the second air channel is used to blow protective gas into the welding channel, and the other air channel sucks out the fume generated by welding from the welding channel, thereby improving the cleanliness of the bar piece surface while protecting the bar piece welding, ensuring the surface welding quality of the bar piece, reducing the bar piece cold soldering, and improving the overall quality of the battery cell module.

[0023] 2. The utility model provides a welding copper nozzle, in which one of the first air channel and the second air channel blows protective gas into the welding channel, and the other air channel sucks out the fume generated by welding from the welding channel, so that the welding environment of the bar piece is always good during welding, the welding quality of the bar piece surface is improved, and the bar piece defective welding is reduced, which has good economic value and practical value.

[0024] 3. A welding plate of the utility model is provided with a plurality of welding copper nozzles arranged on the connecting plate, and the positions of the welding copper nozzles are adapted to the welding positions of the bar pieces; after the positioning part is limitedly connected with the battery cell module, the welding copper nozzles press down the bar pieces for welding, and continuously blow and inhale the welding channel through the first air duct and the second air duct, so that the bar pieces are protected during welding and the smoke can be discharged in time, thereby improving the welding quality of the bar pieces. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic structural diagram of a welding copper nozzle in Example 1;

[0026] Figure 2 This is a schematic diagram of a top view of a welding copper nozzle in Example 1;

[0027] Figure 3 1 is a schematic cross-sectional structure diagram of the AA cross section of a welding copper nozzle in Example 1;

[0028] Figure 4 It is a partially enlarged schematic diagram of a welding channel of a welding copper nozzle in Example 1;

[0029] Figure 5 is a schematic structural diagram of a welding plate of Example 4;

[0030] Figure 6 It is a structural schematic diagram of a welding plate of Example 4.

[0031] icon:

[0032] 1-copper nozzle frame, 2-base, 3-through hole, 4-copper sleeve, 5-welding channel, 6-first rod body, 7-connecting sleeve, 8-spring member, 9-second rod body, 10-blowing channel, 11-inhalation channel, 12-first latch, 13-second latch, 14-laser channel, 15-air flow channel, 16-first air channel, 17-second air channel, 18-first air channel opening, 19-second air channel opening, 20-connecting plate, 21-connecting part, 22-limiting part. DETAILED DESCRIPTION

[0033] The utility model is described in detail below in conjunction with the accompanying drawings.

[0034] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0035] Example 1

[0036] like Figure 1-Figure 4 A welding copper nozzle shown includes a copper nozzle frame 1 and a base 2, wherein the copper nozzle frame 1 is connected to the base 2;

[0037] The copper nozzle frame 1 is provided with a through hole 3, the base 2 is provided with a through laser channel 14, and the laser channel 14 is communicated with the through hole 3; a copper sleeve 4 is adapted to be arranged in the through hole 3, and the copper sleeve 4 is provided with a welding channel 5, and the welding channel 5 is communicated with the laser channel 14;

[0038] The copper nozzle frame 1 defines a first air passage 16 and a second air passage 17 , and both the first air passage 16 and the second air passage 17 are communicated with the welding passage 5 .

[0039] The copper nozzle frame 1 is provided with a through hole 3, and a copper sleeve 4 is arranged in the through hole 3, so that the part of the copper sleeve 4 protruding from the copper nozzle frame 1 can push the bar piece; it is connected with the laser channel 14 through the welding channel 5, and the welding laser can pass through the laser channel 14 and the welding channel 5 in sequence, so that the laser can directly irradiate the bar piece to achieve welding of the bar piece; through the first air channel 16 and the second air channel 17 opened in the copper nozzle frame 1, one of the first air channel 16 and the second air channel 17 is used to blow protective gas into the welding channel 5, and the other air channel sucks out the fume generated by welding from the welding channel 5, thereby improving the cleanliness of the surface of the bar piece while protecting the welding of the bar piece, ensuring the surface welding quality of the bar piece, reducing the false welding of the bar piece, and improving the overall quality of the battery cell module.

[0040] Specifically, the first gas channel 16 is provided with a first gas channel opening 18, and the second gas channel 17 is provided with a second gas channel opening 19. Both the first gas channel opening 18 and the second gas channel opening 19 penetrate the side wall of the welding channel 5, and are respectively located on both sides of the welding channel 5; along the axial direction of the welding channel 5, the first gas channel opening 18 and the second gas channel opening 19 are staggered. The protective gas is blown into the welding channel 5 through the first gas channel opening 18, and the fume in the welding channel 5 is sucked out through the second gas channel opening 19; by respectively arranging the first gas channel opening 18 and the second gas channel opening 19 on both sides of the welding channel 5, the protective gas can take away the fume generated by welding when flowing from the first gas channel opening 18 to the second gas channel opening 19, thereby forming a better protection for the blade; because the fume will float upward, in the axial direction of the welding channel 5, the second gas channel opening 19 is located above the first gas channel opening 18, so that the second gas channel opening 19 can suck away more fume, thereby reducing the escape of fume.

[0041] Specifically, a first pin hole and a second pin hole are provided on opposite sides of the copper nozzle frame 1, a first plug 12 is adapted to be arranged in the first pin hole, and a second plug 13 is adapted to be arranged in the second pin hole, and the end of the second plug 13 can abut against the copper sleeve 4 to limit the copper sleeve 4, and the first pin hole passes through the first air channel 16. When the first plug 12 is inserted into the first pin hole, the end of the first plug 12 can extend into the welding channel 5, and the first air channel 16 is connected with the welding channel 5 through the air flow channel 15 set by the first plug 12; the first plug 12 is designed to not only fix the copper sleeve 4, but also connect the first air channel 16 with the welding channel 5.

[0042] Specifically, the copper sleeve 4 is a tubular structure with a circular cross section, and the hollow portion of the tubular structure serves as the welding channel 5 .

[0043] Specifically, the base 2 is provided with an air suction channel 11 and an air blowing channel 10, the air suction channel 11 is connected to the first air channel 16, and the air blowing channel 10 is connected to the second air channel 17; the base 2 is provided with a first rod body 6 and a second rod body 9, the air suction channel 11 axially penetrates the first rod body 6, and the air blowing channel 10 axially penetrates the second rod body 9; the welding channel 5 is blown and inhaled through the air suction channel 11 and the air blowing channel 10 provided on the base 2, and the setting position of the air supply pipeline and the air suction pipeline is changed to make the arrangement of the air path more reasonable, and avoid interference between the welding copper nozzle and the air path during use; the first rod body 6 and the second rod body 9 are adapted and connected with the connecting plate 20, so that the air supply pipeline and the air suction pipeline can be set on the back side of the connecting plate 20, and the influence of the air supply pipeline and the air suction pipeline on the welding work is avoided.

[0044] Specifically, the columnar rod is provided with a spring member 8 and a connecting sleeve 7, the columnar rod passes through the spring member 8 and the connecting sleeve 7, one end of the spring member 8 is connected to the base 2, and the other end is connected to the connecting sleeve 7; the connecting sleeve 7 is slidably connected to the columnar rod; by providing the spring member 8 and the connecting sleeve 7, the downward pressing angle of the welding copper nozzle on the bar piece can be finely adjusted, so that the bar piece is in close contact with the battery cell to avoid cold soldering.

[0045] A welding copper nozzle of the present embodiment, when in use, the air supply pipeline is connected to the end of the first rod body 6, so that the air supply pipeline can blow air to the welding channel 5 via the blowing channel 10, the first air channel 16, and the first air channel opening 18, and the air suction pipeline is connected to the end of the second rod body 9, so that the air suction pipeline absorbs the smoke in the welding channel 5 through the second air channel opening 19, the second air channel 17 and the air suction channel 11; the copper sleeve 4 is abutted against the bar sheet, so that the bar sheet and the battery core are tightly connected, and the laser passes through the laser channel 14 and the welding channel 5 to irradiate the bar sheet.

[0046] Example 2

[0047] The structure of the welding copper nozzle of this embodiment is substantially the same as that of the embodiment 1. The difference from the embodiment 1 is that the first airway opening 18 and the second airway opening 19 are arranged on two sides of the welding channel 5 opposite to each other.

[0048] By strengthening the convection effect of the first gas opening 18 and the second gas opening 19, the smoke in the welding channel 5 can be discharged quickly.

[0049] Example 3

[0050] The structure of a welding copper nozzle of this embodiment is substantially the same as that of the embodiment 1, but different from the embodiment 1 in that the copper nozzle frame 1 is only provided with a second pin hole.

[0051] Specifically, a second plug pin 13 is disposed in the second pin hole, and an end of the second plug pin 13 abuts against the copper sleeve 4 .

[0052] The copper sleeve 4 is limited by the second latch 13. In some embodiments, the copper nozzle frame 1 is provided with more than three latch holes.

[0053] Example 4

[0054] like Figure 5-Figure 6 A welding plate shown includes a welding copper nozzle described in several embodiments 1 / embodiment 2 / embodiment 3, and also includes a connecting plate 20, on which a positioning portion and several connecting portions 21 are provided, any of the connecting portions 21 can be adapted to be connected with the base 2, and the positioning portion is used for limiting connection with the battery cell module.

[0055] A number of welding copper nozzles are arranged on the connecting plate 20, and the positions of the welding copper nozzles are adapted to the welding positions of the bar pieces. After the positioning part is limitedly connected to the battery cell module, the welding copper nozzles press down the bar pieces for welding, and the welding channel 5 is continuously blown and inhaled through the first air channel 16 and the second air channel 17, so that the bar pieces are protected during welding and the smoke can be discharged in time, thereby improving the welding quality of the bar pieces.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A welding copper nozzle, characterized in that: It comprises a copper nozzle frame (1) and a base (2), wherein the copper nozzle frame (1) is connected to the base (2); The copper nozzle frame (1) is provided with a through hole (3); the base (2) is provided with a through laser channel (14), and the laser channel (14) is communicated with the through hole (3); a copper sleeve (4) is adapted to be arranged in the through hole (3), and the copper sleeve (4) is provided with a welding channel (5), and the welding channel (5) is communicated with the laser channel (14); The copper nozzle frame (1) is provided with a first air channel (16) and a second air channel (17), and the first air channel (16) and the second air channel (17) are both in communication with the welding channel (5).

2. A welding copper nozzle as claimed in claim 1, characterized in that: The first air channel (16) is provided with a first air channel opening (18), and the second air channel (17) is provided with a second air channel opening (19); the first air channel opening (18) and the second air channel opening (19) are both located on the side wall of the welding channel (5).

3. A welding copper nozzle as claimed in claim 2, characterized in that: The first airway opening (18) and the second airway opening (19) are respectively located on two sides of the welding channel (5); along the axial direction of the welding channel (5), the first airway opening (18) and the second airway opening (19) are staggered.

4. A welding copper nozzle as claimed in claim 1, characterized in that: The copper nozzle frame (1) is provided with a latch hole, and a limit latch for limiting the connection of the copper sleeve (4) is arranged in the latch hole.

5. A welding copper nozzle as claimed in claim 4, characterized in that: The latch hole comprises a first latch hole and a second latch hole, and the limit latch comprises a first latch pin (12) and a second latch pin (13), the first latch pin (12) is adaptably connected to the first latch hole, and the second latch pin (13) is adaptably connected to the second latch hole; the first pin hole passes through the first air channel (16), the first latch pin (12) is provided with an air flow channel (15), and the air flow channel (15) can connect the first air channel (16) with the welding channel (5).

6. A welding copper nozzle as claimed in claim 1, characterized in that: The copper sleeve (4) comprises a tubular structural member with a circular cross-section.

7. A welding copper tip according to any one of claims 1 to 6, characterized in that: The base (2) is provided with an air suction channel (11) and an air blowing channel (10); the air suction channel (11) is in communication with the first air channel (16), and the air blowing channel (10) is in communication with the second air channel (17).

8. A welding copper nozzle as claimed in claim 7, characterized in that: The base (2) is provided with a first rod body (6) and a second rod body (9), the air suction channel (11) axially penetrates the first rod body (6), and the air blowing channel (10) axially penetrates the second rod body (9).

9. A welding copper nozzle as claimed in claim 8, characterized in that: The first rod body (6) and the second rod body (9) are both columnar rods, the ends of the columnar rods are connected to the base (2), the columnar rods are provided with a spring member (8) and a connecting sleeve (7), the columnar rod passes through the spring member (8) and the connecting sleeve (7), one end of the spring member (8) is connected to the base (2), and the other end is connected to the connecting sleeve (7); the connecting sleeve (7) is slidably connected to the columnar rod.

10. A welding plate, characterized in that: A welding copper nozzle comprising any one of claims 1 to 9, further comprising a connecting plate (20), wherein a positioning portion and a plurality of connecting portions (21) are provided on the connecting plate (20), any of the connecting portions (21) being adaptable and connectable to the base (2), and the positioning portion being used for limiting connection with a battery cell module.

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