Welding positioning device

Abstract

The embodiment of the utility model provides a welding positioning device, and relates to the technical field of battery welding. The welding positioning device comprises a mounting bottom plate, a positioning assembly and a pressing structure. The mounting bottom plate is used for bearing a battery shell and a battery top cover. The positioning assembly comprises a front positioning block and a rear positioning block, the front positioning block and the rear positioning block are arranged on the mounting bottom plate at an interval, the rear positioning block is used for abutting against the bottom of a battery shell, and the front positioning block is used for abutting against a battery top cover; the pressing structure is arranged on the side, close to the front positioning block, of the mounting bottom plate and used for pressing the battery shell. According to the welding positioning device, the safety in the welding process can be improved, and the welding yield and the welding efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery welding, in particular to a welding positioning device. Background Art

[0002] Top cover welding is a key process in the assembly of battery cell shell covers. The main assembly method at present is: the top cover and the shell are fixed with tape, the shell and the top cover are manually pressed during spot welding, and then the joints between the shell and the top cover are spot welded. After removing the tape, spot welding is performed at the tape position, and finally full welding is performed to complete the shell welding.

[0003] However, this assembly welding method is inconvenient to operate, has poor safety during the welding process, a high welding defect rate, and low welding efficiency. Utility Model Content

[0004] The utility model aims to provide a welding positioning device, which is easy to operate, can improve the safety during welding, and improve the welding yield and welding efficiency.

[0005] The embodiment of the utility model is achieved as follows:

[0006] In a first aspect, the utility model provides a welding positioning device, comprising:

[0007] A mounting base plate, the mounting base plate is used to support the battery housing and the battery top cover;

[0008] A positioning assembly, the positioning assembly comprising a front positioning block and a rear positioning block, the front positioning block and the rear positioning block are spaced apart and arranged on the mounting base plate, the rear positioning block is used to abut against the bottom of the battery housing, and the front positioning block is used to abut against the battery top cover; and

[0009] A clamping structure, wherein the clamping structure is arranged on a side of the mounting base plate close to the front positioning block, and the clamping structure is used to clamp the battery housing.

[0010] In an optional embodiment, the clamping structure includes a pressing plate and a first rotating adjustment member arranged on the pressing plate, wherein the first rotating adjustment member is connected to the mounting base plate and is used to adjust the distance between the pressing plate and the mounting base plate so that the pressing plate presses the battery casing.

[0011] In an optional embodiment, the welding positioning device further includes a guide pin, wherein the guide pin is disposed on the mounting base plate, and the pressure plate is provided with a guide hole, and the guide hole cooperates with the guide pin.

[0012] In an optional embodiment, the front positioning block may be movably disposed on the mounting base plate to adjust the distance between the front positioning block and the rear positioning block.

[0013] In an optional embodiment, the front positioning block is provided with a slotted hole, and the mounting base plate is provided with a positioning hole, and the slotted hole cooperates with the positioning hole so that the front positioning block can move relative to the mounting base plate.

[0014] In an optional embodiment, the rear positioning block may be movably disposed on the mounting base plate to adjust the distance between the rear positioning block and the front positioning block.

[0015] In an optional embodiment, the welding positioning device also includes a buffer linkage structure, which includes a fixed rod and an elastic member arranged on the fixed rod, the fixed rod is arranged on the mounting base plate, and is spaced apart on the side of the rear positioning block away from the front positioning block; the elastic member is connected to the rear positioning block.

[0016] In an optional embodiment, the buffer linkage structure further includes a second rotation adjustment member, which is disposed on the fixing rod and connected to the rear positioning block to adjust the distance between the rear positioning block and the fixing rod.

[0017] In an optional embodiment, the mounting base plate is provided with an avoidance gap, and the avoidance gap is located between the front positioning block and the rear positioning block.

[0018] In an optional embodiment, the mounting base plate is provided with a first positioning groove, a mounting groove and a second positioning groove which are connected in sequence, the front positioning block is arranged in the first positioning groove, the mounting groove is used to install the battery housing and the battery top cover, and the rear positioning block is arranged in the second positioning groove.

[0019] The beneficial effects of the embodiments of the utility model include:

[0020] The welding positioning device includes a mounting base plate, a positioning assembly and a clamping structure, wherein the mounting base plate is used to carry the battery housing and the battery top cover; the positioning assembly includes a front positioning block and a rear positioning block, wherein the front positioning block and the rear positioning block are arranged at intervals on the mounting base plate, the rear positioning block is used to abut against the bottom of the battery housing, and the front positioning block is used to abut against the battery top cover; the clamping structure is arranged on one side of the mounting base plate close to the front positioning block, and the clamping structure is used to clamp the battery housing. That is to say, when performing welding positioning, the battery housing and the battery top cover are first placed on the mounting base plate, and the battery housing and the battery top cover are installed and positioned by the front positioning block and the rear positioning block, so that the battery housing and the battery top cover are abutted and fixed; then the battery housing is further clamped and fixed by the clamping device, so that the abutment between the battery housing and the top cover is more stable and not easy to shake during the welding process. Therefore, by using the welding positioning device, there is no need to press manually during the welding process, the operation is convenient, and the welding safety and welding yield can be improved; at the same time, there is no need to use tape to bond and fix the battery housing and the battery top cover, and the welding efficiency can also be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 A schematic diagram of the structure of a welding positioning device provided in an embodiment of the utility model;

[0023] Figure 2 A schematic diagram of assembling the welding positioning device provided in an embodiment of the utility model with the battery housing and the battery top cover;

[0024] Figure 3 for Figure 2 A partial enlarged view of the middle A;

[0025] Figure 4 for Figure 2 A partial enlarged view of point B in the middle.

[0026] Icons: 100-welding positioning device; 10-installing base plate; 11-positioning hole; 12-avoidance gap; 13-first positioning groove; 14-installing groove; 15-second positioning groove; 20-positioning assembly; 21-front positioning block; 211-slot hole; 212-first avoidance groove; 22-rear positioning block; 221-second avoidance groove; 30-clamping structure; 31-pressing plate; 311-guide hole; 32-first rotating adjustment member; 40-guide pin; 50-buffer linkage structure; 51-fixing rod; 52-elastic member; 53-second rotating adjustment member; 200-battery housing; 300-battery top cover. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0030] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0031] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0032] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] As described in the background technology, top cover welding is a key process in the assembly process of the battery cell shell cover. The current main assembly method is: the top cover and the shell are fixed with tape, the shell and the top cover are manually pressed during spot welding, and then the joints between the shell and the top cover are spot welded. After removing the tape, spot welding is performed at the tape position, and finally full welding is performed to complete the shell welding.

[0034] However, the inventors have found that this assembly and welding method of the top cover and the shell is difficult to operate by manually pressing because the shell and the top cover are bonded by tape; secondly, manual pressing also leads to poor safety during the welding process; at the same time, the top of the junction of the top cover and the shell is not fixed during the welding process, which can easily cause welding explosion points and lead to a high welding defect rate; in addition, it is necessary to remove the tape and perform spot welding on the tape position, resulting in low welding efficiency.

[0035] Based on this, please refer to Figure 1-Figure 4 The embodiment of the utility model provides a welding positioning device 100, which can effectively improve the above-mentioned technical problems, that is, it can improve the safety during welding, and improve the welding yield and welding efficiency. The welding positioning device 100 will be described in detail below.

[0036] Please refer to Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the structure of the welding positioning device 100 provided in this embodiment. Figure 2 The schematic diagram of the assembly of the welding positioning device 100 provided in this embodiment with the battery housing 200 and the battery top cover 300 is shown in FIG. Figure 1 and Figure 2The welding positioning device 100 includes a mounting base plate 10, a positioning assembly 20 and a clamping structure 30. The mounting base plate 10 is used to support the battery housing 200 and the battery top cover 300; the positioning assembly 20 includes a front positioning block 21 and a rear positioning block 22, the front positioning block 21 and the rear positioning block 22 are arranged at intervals on the mounting base plate 10, the rear positioning block 22 is used to abut against the bottom of the battery housing 200, and the front positioning block 21 is used to abut against the battery top cover 300; the clamping structure 30 is arranged on one side of the mounting base plate 10 close to the front positioning block 21, and the clamping structure 30 is used to clamp the battery housing 200.

[0037] That is to say, when performing welding positioning, first place the battery housing 200 and the battery top cover 300 on the mounting base 10, and install and position the battery housing 200 and the battery top cover 300 through the front positioning block 21 and the rear positioning block 22, so that the battery housing 200 and the battery top cover 300 are abutted and fixed; then the battery housing 200 is further pressed and fixed by the clamping device, so that the abutment between the battery housing 200 and the top cover is more stable and not easy to shake during the welding process. Therefore, using the welding positioning device 100, there is no need for manual pressing during the welding process, the operation is convenient, and the welding safety and welding yield can be improved; at the same time, there is no need to use tape to bond and fix the battery housing 200 and the battery top cover 300, and the welding efficiency can also be improved.

[0038] In order to facilitate the installation of the front positioning block 21, the rear positioning block 22 and the assembly of the battery housing 200 and the battery top cover 300, in this embodiment, the mounting base plate 10 is provided with a first positioning groove 13, a mounting groove 14 and a second positioning groove 15 which are connected in sequence, the front positioning block 21 is arranged in the first positioning groove 13, the mounting groove 14 is used to install the battery housing 200 and the battery top cover 300, and the rear positioning block 22 is arranged in the second positioning groove 15. That is, when assembling, the battery housing 200 and the battery top cover 300 can be directly placed in the mounting groove 14, and the battery housing 200 and the battery top cover 300 are respectively abutted and positioned by the front positioning block 21 and the rear positioning block 22, so that the battery housing 200 and the battery top cover 300 can be contacted and fixed with each other. It is easy to understand that the mounting groove 14 can also provide a certain positioning effect and further improve the stability during the welding process.

[0039] Furthermore, in order to facilitate loading and unloading of the battery housing 200 and the battery top cover 300, the installation base plate 10 is provided with an avoidance notch 12, and the avoidance notch 12 is located between the front positioning block 21 and the rear positioning block 22. In this embodiment, the avoidance notch 12 is connected to the installation groove 14, so that the battery housing 200 and the battery top cover 300 can be better placed in the installation groove 14, and after the welding is completed, the battery housing 200 and the battery top cover 300 can be conveniently taken out.

[0040] It should be pointed out that there can be multiple avoidance gaps 12, and the multiple avoidance gaps 12 are arranged at intervals, and avoidance gaps 12 can be arranged on both sides of the installation groove 14, which can make it more convenient to remove the battery shell 200 and the battery top cover 300 from the gaps on both sides.

[0041] Please continue to combine Figure 1 and Figure 2 The pressing structure 30 includes a pressing plate 31 and a first rotating adjusting member 32 disposed on the pressing plate 31. The first rotating adjusting member 32 is connected to the mounting base plate 10 and is used to adjust the distance between the pressing plate 31 and the mounting base plate 10 so that the pressing plate 31 presses the battery housing 200. That is, after the battery housing 200 is mounted on the mounting base plate 10, the pressing plate 31 is moved toward the mounting base plate 10 by rotating the first rotating adjusting member 32, thereby pressing the battery housing 200 against the mounting base plate 10.

[0042] In order to facilitate the assembly of the pressing plate 31 and the first rotating adjusting member 32 with the mounting base plate 10, please refer to Figure 3 , Figure 3 for Figure 2 The local enlarged view of A in the middle, combined with Figure 2 and Figure 3 The welding positioning device 100 also includes a guide pin 40, which is arranged on the mounting base 10. The pressure plate 31 is provided with a guide hole 311, and the guide hole 311 cooperates with the guide pin 40. The guide pin 40 can play a guiding role, which facilitates the installation and removal of the pressure plate 31.

[0043] It should be noted that, in this embodiment, the number of guide pins 40 and guide holes 311 are both two, and the two guide pins 40 correspond to the two guide holes 311 one by one and are arranged at intervals, which can further ensure the clamping straightness of the pressure plate 31, so that the welding positions of the assembled battery shell 200 and the battery top cover 300 are evenly stressed.

[0044] Please continue to combine Figure 3 In order to adjust the positions of the battery housing 200 and the battery top cover 300 on the mounting base 10, in the present embodiment, the front positioning block 21 can be movably arranged on the mounting base 10 to adjust the distance between the front positioning block 21 and the rear positioning block 22, so as to better achieve the abutment and fixation of the battery housing 200 and the battery top cover 300.

[0045] Specifically, in this embodiment, the front positioning block 21 is provided with a slotted hole 211, and the mounting base plate 10 is provided with a positioning hole 11, and the slotted hole 211 cooperates with the positioning hole 11 so that the front positioning block 21 can move relative to the mounting base plate 10. In other words, the front positioning block 21 is first moved to abut against the battery top cover 300, and then fasteners such as screws or bolts are passed through the slotted hole 211 and set in the positioning hole 11, so as to fix the front positioning block 21.

[0046] Of course, in other embodiments, a slide rail may be provided on the front positioning block 21 and a slide groove may be provided on the mounting base plate 10. Through this sliding fit relationship, the front positioning block 21 and the mounting base plate 10 may be movable fit.

[0047] Please continue to combine Figure 1 and Figure 2 Similarly, the rear positioning block 22 can be movably arranged on the mounting base plate 10 to adjust the distance between the rear positioning block 22 and the front positioning block 21, and can also adjust the position of the battery housing 200 and the battery top cover 300 on the mounting base plate 10, so as to better achieve the abutment and fixation of the battery housing 200 and the battery top cover 300.

[0048] It should be noted that a slide rail may be provided on the rear positioning block 22 and a slide groove may be provided on the mounting base plate 10 , so that the rear positioning block 22 and the mounting base plate 10 can be movably matched with each other through a sliding fit.

[0049] Furthermore, in order to prevent the battery housing 200 from being deformed due to excessive compression, the welding positioning device 100 also includes a buffer linkage structure 50, which includes a fixing rod 51 and an elastic member 52 arranged on the fixing rod 51. The fixing rod 51 is arranged on the mounting base plate 10 and is spaced apart on the side of the rear positioning block 22 away from the front positioning block 21; the elastic member 52 is connected to the rear positioning block 22. In this way, when the bottom of the battery housing 200 abuts against the rear positioning block 22, the rear positioning block 22 can be actuated to move toward the fixing rod 51. At this time, the elastic member 52 is subjected to pressure and produces elastic deformation, thereby playing a buffering role, and can further improve the stability during the welding process and improve the welding yield rate.

[0050] In order to adjust the tightness of the elastic member 52 and the rear positioning block 22, in this embodiment, the buffer linkage structure 50 also includes a second rotation adjustment member 53, which is arranged on the fixed rod 51 and connected to the rear positioning block 22 for adjusting the distance between the rear positioning block 22 and the fixed rod 51.

[0051] It should be noted that after welding is completed, the battery housing 200 and the battery top cover 300 need to be removed. At this time, the second rotating adjustment member 53 can be rotated to loosen the rear positioning block 22, and the rear positioning block 22 can be pulled toward the direction of the fixing rod 51, and then the battery housing 200 and the battery top cover 300 on the mounting base 10 can be removed; through the setting of the second rotating adjustment member 53, while facilitating the adjustment of the tightness of the battery housing 200, the convenience of unloading after welding can also be guaranteed.

[0052] Please continue to combine Figure 3Generally speaking, the battery top cover 300 has a protruding structure. In order to avoid the protruding structure, the front positioning block 21 is also provided with a first avoidance groove 212. The first avoidance groove 212 is arranged on the side of the front positioning block 21 close to the rear positioning block 22. It is easy to understand that the setting of the first avoidance groove 212 can also provide a fixing effect on the battery top cover 300, thereby further improving the welding stability.

[0053] Please refer to Figure 4 , Figure 4 for Figure 2 The local enlarged picture of B in the middle, combined with Figure 2 and Figure 4 Also, in order to avoid the protruding structure at the bottom of the battery housing 200, the rear positioning block 22 is provided with a second avoidance groove 221. The second avoidance groove 221 is arranged on one side of the rear positioning block 22 close to the front positioning block 21 to further improve the welding stability.

[0054] In summary, an embodiment of the utility model provides a welding positioning device 100, which includes a mounting base plate 10, a positioning assembly 20 and a clamping structure 30. The mounting base plate 10 is used to support the battery housing 200 and the battery top cover 300; the positioning assembly 20 includes a front positioning block 21 and a rear positioning block 22, and the front positioning block 21 and the rear positioning block 22 are spaced apart on the mounting base plate 10, the rear positioning block 22 is used to abut against the bottom of the battery housing 200, and the front positioning block 21 is used to abut against the battery top cover 300; the clamping structure 30 is arranged on the side of the mounting base plate 10 close to the front positioning block 21, and the clamping structure 30 is used to clamp the battery housing 200. That is to say, when performing welding positioning, the battery housing 200 and the battery top cover 300 are first placed on the mounting base 10, and the battery housing 200 and the battery top cover 300 are installed and positioned by the front positioning block 21 and the rear positioning block 22, so that the battery housing 200 and the battery top cover 300 are abutted and fixed; then the battery housing 200 is further pressed and fixed by the clamping device, so that the abutment between the battery housing 200 and the top cover is more stable and not easy to shake during the welding process.

[0055] Therefore, by using the welding positioning device 100, there is no need for manual pressing during the welding process, the operation is convenient, and the welding safety and welding yield can be improved; at the same time, there is no need to use tape to bond and fix the battery shell 200 and the battery top cover 300, and the welding efficiency can also be improved.

[0056] The above description is only a specific embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A welding positioning device, characterized in that: include: A mounting base plate (10), wherein the mounting base plate (10) is used to support a battery housing (200) and a battery top cover (300); A positioning assembly (20), the positioning assembly (20) comprising a front positioning block (21) and a rear positioning block (22), the front positioning block (21) and the rear positioning block (22) being arranged at intervals on the mounting base plate (10), the rear positioning block (22) being used to abut against the bottom of the battery housing (200), and the front positioning block (21) being used to abut against the battery top cover (300); and A clamping structure (30), the clamping structure (30) being arranged on a side of the mounting base plate (10) close to the front positioning block (21), the clamping structure (30) being used to clamp the battery housing (200).

2. The welding positioning device according to claim 1, characterized in that: The pressing structure (30) comprises a pressing plate (31) and a first rotating adjustment member (32) arranged on the pressing plate (31); the first rotating adjustment member (32) is connected to the mounting base plate (10) and is used to adjust the distance between the pressing plate (31) and the mounting base plate (10) so that the pressing plate (31) presses the battery housing (200).

3. The welding positioning device according to claim 2, characterized in that: The welding positioning device (100) further comprises a guide pin (40), wherein the guide pin (40) is arranged on the mounting base plate (10), and the pressing plate (31) is provided with a guide hole (311), wherein the guide hole (311) cooperates with the guide pin (40).

4. The welding positioning device according to claim 1, characterized in that: The front positioning block (21) is movably arranged on the mounting base plate (10) so as to adjust the distance between the front positioning block (21) and the rear positioning block (22).

5. The welding positioning device according to claim 4, characterized in that: The front positioning block (21) is provided with a slotted hole (211), and the mounting base plate (10) is provided with a positioning hole (11), and the slotted hole (211) cooperates with the positioning hole (11) so that the front positioning block (21) can move relative to the mounting base plate (10).

6. The welding positioning device according to claim 1, characterized in that: The rear positioning block (22) is movably arranged on the mounting base plate (10) so as to adjust the distance between the rear positioning block (22) and the front positioning block (21).

7. The welding positioning device according to claim 6, characterized in that: The welding positioning device (100) further comprises a buffer linkage structure (50), wherein the buffer linkage structure (50) comprises a fixing rod (51) and an elastic member (52) arranged on the fixing rod (51), wherein the fixing rod (51) is arranged on the mounting base plate (10) and is spaced apart on a side of the rear positioning block (22) away from the front positioning block (21); and the elastic member (52) is connected to the rear positioning block (22).

8. The welding positioning device according to claim 7, characterized in that: The buffer linkage structure (50) further comprises a second rotation adjustment member (53), which is arranged on the fixing rod (51) and connected to the rear positioning block (22) so as to adjust the distance between the rear positioning block (22) and the fixing rod (51).

9. The welding positioning device according to claim 1, characterized in that: The installation base plate (10) is provided with an avoidance gap (12), and the avoidance gap (12) is located between the front positioning block (21) and the rear positioning block (22).

10. The welding positioning device according to claim 1, characterized in that: The mounting base plate (10) is provided with a first positioning groove (13), a mounting groove (14) and a second positioning groove (15) which are connected in sequence, the front positioning block (21) is arranged in the first positioning groove (13), the mounting groove (14) is used for mounting the battery housing (200) and the battery top cover (300), and the rear positioning block (22) is arranged in the second positioning groove (15).

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