Novel welding seat structure

Abstract

The utility model discloses a novel welding seat structure which comprises a welding seat body, the welding seat body is used for being installed on a welding machine, a welding table is arranged on the welding seat body, a welding area used for conducting welding operation is arranged on the welding table, and the positions, close to the two ends, of the welding seat body relative to the welding table are provided with edge blocking strips. And the flange strip is used for fixing the position of the welding seat body when the welding seat body is mounted on the welding machine. The flange strips are arranged at the positions, close to the two ends, of the welding seat body so that the position of the welding seat can be fixed when the welding seat body is installed on a welding machine, and therefore the over-welding phenomenon caused by the fact that the installation position of the welding seat body is improper in the welding process is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery pole lug welding technical field especially relates to a novel welding seat structure. BACKGROUND

[0002] Pole lug welding is an important process in soft package battery cell assembly production, and pole lug welding is divided into pre-welding and main welding two processes, at present, pre-welding adopts ultrasonic welding mode, and main welding adopts laser welding mode.Ultrasonic welding mode has the following advantages: welding process does not cause welding material to melt, welding internal resistance is low, welding time is short, efficiency is high, there is no spark in welding process, and safety performance is high, however, due to poor stability of ultrasonic welding device, pole lug is prone to virtual welding abnormality in the ultrasonic welding process, which makes the success rate of ultrasonic welding low and further leads to a high product rejection rate.Therefore, after pole lug completes ultrasonic pre-welding, laser main welding needs to be carried out to increase the welding strength of pole lug.

[0003] However, the laser welding effect of the pole lug end needs to be improved, and the installation position of the welding seat in the welding process can easily affect the welding effect, and the installation of the welding seat usually mainly depends on the replacement proficiency of the on-site technician and the experience of matching the welding head and the welding seat of the technician, so there is uncertainty.When the welding seat position is installed incorrectly, the welding seat teeth are in contact with the welding head teeth, causing excessive stress on the foil, and further causing overwelding phenomenon affecting the welding tension. UTILITY MODEL CONTENT

[0004] The utility model aims at overcoming the defects in the prior art and provides a novel welding seat structure.

[0005] The utility model aims at overcoming the defects in the prior art and provides a novel welding seat structure.

[0006] A novel welding seat structure comprises a welding seat body, the welding seat body is used for being installed on a welding machine, a welding table is arranged on the welding seat body, a welding area for welding operation is arranged on the welding table, a stop edge strip is arranged on the welding seat body relative to the positions close to both ends of the welding table, and the stop edge strip is used for fixing the position of the welding seat body when the welding seat body is installed on the welding machine.

[0007] In one embodiment, the stop edge strip is arranged along the height direction of the welding seat body, and the height of the stop edge strip is higher than the height of the welding table.

[0008] In one embodiment, the thickness of the stop edge strip is 8mm.

[0009] In one embodiment, rubber parts are arranged on the side of the stop edge strip facing the welding table and the side of the stop edge strip away from the welding table, and the rubber parts are used for buffering when the welding seat body contacts the stop edge strip.

[0010] In one of the embodiments, three relief grooves are arranged on the welding platform, the three relief grooves are respectively a first relief groove, a second relief groove and a third relief groove, the first relief groove is arranged on the side of the welding platform away from the baffle strip, the first relief groove is arranged along the length direction of the welding platform, and the first relief groove is communicated with the outside at positions close to the two ends of the welding platform, the second relief groove is arranged along the width direction of the welding platform, the second relief groove is communicated with the first relief groove, and the third relief groove is arranged on the side of the welding platform close to the baffle strip, the third relief groove is arranged along the length direction of the welding platform, and the third relief groove is communicated with the outside at positions close to the two ends of the welding platform.

[0011] In one of the embodiments, the width of the first relief groove, the second relief groove and the third relief groove is 1mm, and the depth is 0.5mm.

[0012] In one of the embodiments, a first baffle plate is arranged on one side of the welding seat body relative to the first relief groove, the first baffle plate is arranged along the length direction of the first relief groove, and the height of the first baffle plate is higher than the height of the welding platform.

[0013] In one of the embodiments, a second baffle plate is arranged on one side of the welding seat body relative to the second relief groove, the second baffle plate is arranged along the length direction of the second relief groove, and the length of the second baffle plate is smaller than the length of the second relief groove.

[0014] In one of the embodiments, a protection gas interface is arranged on one side of the first baffle plate facing the welding platform, and the protection gas interface is used for connecting a gas supply device for providing protection gas.

[0015] In one of the embodiments, a fixing seat is arranged on each of the left and right outer sides of the welding seat body, a threaded hole is arranged on the fixing seat, and the fixing seat is used for fixing the welding seat body to a specified position on a welding machine.

[0016] Compared with the prior art, the welding seat structure has at least the following advantages:

[0017] 1. The welding seat structure is arranged on the welding seat body close to the two ends of the welding seat body, is used for fixing the position of the welding seat when the welding seat body is installed on the welding machine, makes the baffle strip abut against the welding machine, so that the two end positions of the welding seat body facing the welding machine are in contact with the baffle strip and are stuck, plays a role of fixing the position of the welding seat body, and thus can avoid the phenomenon of overwelding due to improper installation position of the welding seat body in the welding process.

[0018] 2. The novel welding seat structure of the utility model protects the copper tab and the aluminum tab from being oxidized by blowing nitrogen or argon when the tab is located on the welding platform for laser welding. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the drawings needed to be used in the embodiments will be briefly introduced below.

[0020] Figure 1 The structure diagram of the novel welding seat structure provided by the utility model is shown in the figure.

[0021] Figure 2 The side sectional structure diagram of the novel welding seat structure provided by the utility model is shown in the figure.

[0022] BRIEF DESCRIPTION OF DRAWINGS: 10, welding seat body; 11, welding platform; 111, welding area; 20, fixed seat; 30, baffle strip; 40, first tool withdrawal groove; 50, second tool withdrawal groove; 60, third tool withdrawal groove; 70, first baffle; 71, protective gas interface; 80, second baffle. DETAILED DESCRIPTION

[0023] In order to facilitate the understanding of the utility model, the utility model will be more fully described below with reference to the relevant drawings.

[0024] A novel welding seat structure, referring to Figure 1 , comprises a welding seat body 10, and it needs to be noted that the welding seat body 10 is used for being installed on a welding machine, and in the embodiment, the welding machine is the prior art, and the specific structure thereof can be known by those skilled in the art, so that the structure thereof is not described in detail.

[0025] Referring to Figure 1 , the welding seat body 10 is arranged in a mountain shape, and the welding seat body 10 is provided with fixed seats 20 on the left and right two outer sides, and the fixed seats 20 are provided with threaded holes, and the fixed seats 20 are used for fixing the welding seat body 10 at a specified position on the welding machine, and specifically, bolts pass through the threaded holes on the fixed seats 20 on the two sides of the welding seat body 10 and the welding machine in sequence to fix the welding seat body 10 on the welding machine.

[0026] Referring to Figure 1 , the welding seat body 10 is provided with a welding platform 11, and in the embodiment, after the foil is pre-welded by ultrasonic waves, the tab of the battery cell is added to the pre-welded foil and is pressed, and then laser welding is performed on the upper surface of the tab of the battery cell. The operation of laser welding is realized on the welding platform 11 on the welding seat body 10.

[0027] Referring to Figure 1The welding platform 11 is provided with a welding area 111 for welding operation, and the welding platform 11 is fixed to the welding base body 10 by bolts. The welding base body 10 is provided with a stop strip 30 near both ends relative to the welding platform 11. The stop strip 30 is used to fix the position of the welding base body 10 when the welding base body 10 is installed on the welding machine. The stop strip 30 abuts against the welding machine, so that the position of the welding base body 10 near both ends of the welding machine is in contact with the stop strip 30 and is locked, thereby fixing the position of the welding base body 10. It should be noted that when welding operation is performed in the welding area 111, if the stop strip 30 is not provided, the installation position of the welding base body 10 will fluctuate. When welding, the welding head of the welding machine is in contact with the welding platform 11 of the welding base body 10, and the position of the welding head of the welding machine does not match the welding area 111 of the welding base body 10, which leads to over-welding and foil welding, thereby affecting the welding effect.

[0028] Further, referring to Figure 1 and Figure 2 , the stop strip 30 is arranged along the height direction of the welding base body 10. The height of the stop strip 30 is higher than the height of the welding platform 11, and the side of the stop strip 30 away from the side close to the welding platform 11 is arranged in an inclined manner.

[0029] Further, referring to Figure 1 and Figure 2 , the thickness of the stop strip 30 is adjusted according to the size of the welding base body 10. First, the size of the welding base body 10 is measured. According to the size of the welding base body 10, the thickness of the stop strip 30 for fixing the installation position of the welding base body 10 is designed within the tolerance range of the size change of the welding base body 10. Therefore, when the welding base body 10 is installed on the welding machine, the position near both ends of the welding base body 10 can abut against the stop strip 30. In this embodiment, the thickness of the stop strip 30 is 8 mm.

[0030] Further, referring to Figure 1 and Figure 2 , the side of the stop strip 30 close to the welding platform 11 and the side away from the welding platform 11 are provided with rubber parts. The rubber parts are used to buffer when the welding base body 10 is in contact with the stop strip 30, so as to avoid damage caused by too large abutting force between the welding base body 10 and the stop strip 30 after the welding base body 10 is installed on the welding machine.

[0031] Further, referring to Figure 1 and Figure 2The welding platform 11 is provided with three retreat grooves, namely a first retreat groove 40, a second retreat groove 50 and a third retreat groove 60. The first retreat groove 40 is located on the side of the welding platform 11 away from the baffle strip 30, and is opened along the length direction of the welding platform 11. The first retreat groove 40 is in communication with the outside at positions close to both ends of the welding platform 11. The second retreat groove 50 is opened along the width direction of the welding platform 11, and is in communication with the first retreat groove 40. The third retreat groove 60 is located on the side of the welding platform 11 close to the baffle strip 30, and is opened along the length direction of the welding platform 11. The third retreat groove 60 is in communication with the outside at positions close to both ends of the welding platform 11, and is in communication with the second retreat groove 50. The first retreat groove 40, the second retreat groove 50 and the third retreat groove 60 are all convenient for the welding head of the welding machine to retreat from the welding platform 11.

[0032] Further, referring to Figure 1 and Figure 2 , the width of the first retreat groove 40, the second retreat groove 50 and the third retreat groove 60 is 1 mm, and the depth is 0.5 mm.

[0033] Further, referring to Figure 1 and Figure 2 , the welding seat body 10 is provided with a first baffle 70 on the side opposite to the first retreat groove 40. The first baffle 70 is arranged along the length direction of the first retreat groove 40, and the height of the first baffle 70 is higher than the height of the welding platform 11. The thickness of the first baffle 70 is 2 mm, and the first baffle 70 is used to effectively block the spatter of welding slag in the process of welding the tab, so as to avoid the poor internal resistance and poor packaging of the battery cell caused by the spatter of the welding slag.

[0034] Further, referring to Figure 1 and Figure 2 , the welding seat body 10 is provided with a second baffle 80 on the side opposite to the second retreat groove 50. The second baffle 80 is arranged along the length direction of the second retreat groove 50, and the length of the second baffle 80 is less than the length of the second retreat groove 50, so as to avoid the influence of the second baffle 80 on the retreat of the welding head of the welding machine. It should be noted that the height of the second baffle 80 is higher than the height of the welding platform 11, and the thickness of the second baffle 80 is 2 mm. The second baffle 80 is used to effectively block the spatter of welding slag in the process of welding the tab.

[0035] In an embodiment, referring to Figure 1The first baffle plate 70 is provided with a protective gas interface 71 on the side close to the welding table 11, and the protective gas interface 71 is used for connecting a gas supply device, and the gas supply device provides a protective gas, which can be used to avoid the tab being oxidized during the tab welding. In the embodiment, the protective gas is nitrogen or argon, and the nitrogen or argon is blown when the laser welding is performed when the tab is located on the welding table 11, so as to protect the copper tab and the aluminum tab from being oxidized. It should be noted that the protective gas interface 71 on the first baffle plate 70 has two, and the two protective gas interfaces 71 are located at the positions close to the two ends of the first baffle plate 70. The two protective gas interfaces 71 act on the welding end of the tab from the direction close to the two ends of the welding table 11, so as to facilitate increasing the coverage of the protective gas on the welding position of the tab, thereby improving the protection effect and reducing the probability of increasing the internal resistance of the battery due to the oxidation of the welding end of the tab.

[0036] The utility model discloses a baffle strip 30 is arranged at the position close to the two ends of the welding seat body 10, and is used for fixing the position of the welding seat when the welding seat body 10 is installed to the welding machine, and the baffle strip 30 is in abutment with the welding machine, so that the two end positions of the welding seat body 10 towards the welding machine are in contact with the baffle strip 30 and are locked, the position of the welding seat body 10 is fixed, and the phenomenon of overwelding due to the improper installation position of the welding seat body 10 in the welding process can be avoided.

[0037] The above-mentioned embodiments only express several implementation manners of the utility model, and the description is more specific and detailed, but can not be understood as the limitation of the utility model patent scope. It should be pointed out that for ordinary skilled person in the art, without departing from the utility model concept, a plurality of deformations and improvements can be made, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent should be subject to the appended claims.

Claims

1. A novel weld seat structure, characterized by, The application relates to a welding seat body (10) for mounting on a welding machine, wherein a welding table (11) is arranged on the welding seat body (10), a welding area (111) for welding operation is arranged on the welding table (11), and a baffle strip (30) is arranged on the welding seat body (10) at positions close to both ends of the welding table (11) and used for fixing the position of the welding seat body (10) when the welding seat body (10) is mounted on the welding machine. The baffle strip (30) is arranged along the height direction of the welding seat body (10), and the height of the baffle strip (30) is higher than the height of the welding table (11).

2. A novel solder pad structure according to claim 1, characterized in that, The thickness of the baffle strip (30) is 8 mm.

3. The novel solder seat structure according to claim 1, characterized in that, Rubber parts are arranged on the side of the baffle strip (30) facing the welding table (11) and the side of the baffle strip (30) away from the welding table (11), and the rubber parts are used for buffering when the welding seat body (10) contacts the baffle strip (30).

4. The novel solder seat structure according to claim 1, characterized in that, Three tool withdrawal grooves are arranged on the welding table (11), and the three tool withdrawal grooves are respectively a first tool withdrawal groove (40), a second tool withdrawal groove (50) and a third tool withdrawal groove (60). The first tool withdrawal groove (40) is arranged on the side of the welding table (11) away from the baffle strip (30), the first tool withdrawal groove (40) is arranged along the length direction of the welding table (11), and the first tool withdrawal groove (40) is communicated with the outside at positions close to both ends of the welding table (11). The second tool withdrawal groove (50) is arranged along the width direction of the welding table (11), the second tool withdrawal groove (50) is communicated with the first tool withdrawal groove (40), and the third tool withdrawal groove (60) is arranged on the side of the welding table (11) close to the baffle strip (30). The third tool withdrawal groove (60) is arranged along the length direction of the welding table (11), and the third tool withdrawal groove (60) is communicated with the outside at positions close to both ends of the welding table (11). The third tool withdrawal groove (60) is communicated with the second tool withdrawal groove (50).

5. The novel solder seat structure according to claim 1, wherein The width of the first tool withdrawal groove (40), the second tool withdrawal groove (50) and the third tool withdrawal groove (60) is 1 mm, and the depth is 0.5 mm.

6. A novel solder pad structure according to claim 5, wherein A first baffle (70) is arranged on the side of the welding seat body (10) relative to the first tool withdrawal groove (40), the first baffle (70) is arranged along the length direction of the first tool withdrawal groove (40), and the height of the first baffle (70) is higher than the height of the welding table (11).

7. The novel solder seat structure according to claim 5, wherein A second baffle (80) is arranged on the side of the welding seat body (10) relative to the second tool withdrawal groove (50), the second baffle (80) is arranged along the length direction of the second tool withdrawal groove (50), and the length of the second baffle (80) is smaller than the length of the second tool withdrawal groove (50).

8. The novel solder seat structure of claim 5, wherein A protection gas interface (71) is arranged on the side of the first baffle (70) facing the welding table (11), and the protection gas interface (71) is used for connecting a gas supply device for providing protection gas.

9. The novel solder seat structure according to claim 7, wherein ​ 10. The novel solder seat structure of claim 1, wherein The welding seat body (10) is provided with a fixing seat (20) on both left and right sides, the fixing seat (20) is provided with a threaded hole, and the fixing seat (20) is used for fixing the welding seat body (10) to a specified position on a welding machine.

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