Positioning mechanism for laser welding of connecting piece for single-core-pack battery

Abstract

The utility model relates to the technical field of battery manufacturing, in particular to a positioning mechanism for laser welding of a connecting piece for a single-core-pack battery, which comprises a top cover positioning plate and a connecting piece positioning block, and is characterized in that the middle position of the top of the top cover positioning plate is used for positioning and placing a battery top cover; the two sides of the top of the top cover positioning plate are each provided with a connecting piece positioning block capable of vertically overturning. The connecting piece positioning block is used for pressing and fixing the battery connecting piece on the top of the battery top cover, and a laser channel is formed in the connecting piece positioning block and corresponds to the welding part of the battery top cover and the battery connecting piece along the vertical direction in a penetrating manner; connecting piece positioning clamping grooves are formed in the opposite ends of the two connecting piece positioning blocks and are used for clamping the tops of the battery connecting pieces; the positioning mechanism can directly position the battery connecting piece and the battery top cover, facilitates welding operation of the single-core-wrapped battery, and solves the problem that an existing positioning mechanism cannot be directly applied to the laser welding process of the connecting piece of the single-core-wrapped battery.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery manufacturing technical field especially relates to a kind of positioning mechanism of connecting piece laser welding for single-core package battery. BACKGROUND

[0002] In the traditional battery production process, the top cover assembly and the connecting piece are welded together by laser welding. When welding, the position of the top cover assembly and the core package is positioned by a positioning mechanism (such as the positioning device for battery pack laser welding disclosed in CN221695782U), and then laser welding is performed. Among them, the positioning of the top cover assembly mainly relies on the core package as a reference datum.

[0003] Single-core package battery refers to a battery type that contains only one battery cell. When producing this type of battery, the connecting piece needs to be laser welded with the top cover first, and then welded with the core package. Since there is a lack of core package as a positioning reference, the existing positioning mechanism cannot directly position the relative position of the connecting piece and the top cover. Therefore, it is necessary to provide a positioning mechanism for laser welding of connecting piece for single-core package battery. SUMMARY

[0004] Therefore, the positioning mechanism for laser welding of connecting piece for single-core package battery can directly position the battery connecting piece and the battery top cover, facilitating the welding operation of single-core package battery, and solving the problem that the existing positioning mechanism cannot be directly applied to the laser welding process of the connecting piece of single-core package battery.

[0005] The technical solution of the utility model is as follows:

[0006] The utility model provides a kind of positioning mechanism for laser welding of connecting piece for single-core package battery, including top cover positioning plate, still including connecting piece positioning block, wherein,

[0007] The middle position of the top of the top cover positioning plate is used for the positioning placement of the battery top cover, and one connecting piece positioning block that can be vertically flipped is arranged on both sides of the top of the top cover positioning plate;

[0008] The connecting piece positioning block is used to press and fix the battery connecting piece on the top of the battery top cover, and a laser channel is vertically arranged on the connecting piece positioning block and corresponds to the welding position of the battery top cover and the battery connecting piece;

[0009] A connecting piece positioning slot is arranged on the opposite end of the two connecting piece positioning blocks, and the connecting piece positioning slot is used to clamp the top of the battery connecting piece.

[0010] On the basis of the above technical solution, preferably, the top of the top cover positioning plate and the side end of the connecting piece positioning block are connected by a hinge.

[0011] Preferably, a top cover profiling groove is arranged on the top of the top cover positioning plate, wherein,

[0012] The shape of the top cover profiling groove is matched with the shape of the battery top cover.

[0013] Preferably, a top cover positioning pin is arranged on the groove bottom of the top cover profiling groove.

[0014] Preferably, bolt mounting holes are arranged on both sides of the top of the top cover positioning plate.

[0015] Preferably, the connecting sheet positioning clamping groove is through the connecting sheet positioning block.

[0016] Preferably, an avoiding chamfer is arranged on the groove bottom of the lower end of the connecting sheet positioning clamping groove.

[0017] Preferably, a latch is arranged on the top of the top cover positioning plate, and a positioning hole is arranged on the connecting sheet positioning block, wherein,

[0018] The latch is inserted into the positioning hole.

[0019] Preferably, the positioning hole is a long circular hole.

[0020] Preferably, the top end of the connecting sheet positioning block is 5-20 mm higher than the top end of the battery connecting sheet.

[0021] The positioning mechanism for laser welding of the connecting sheet of the single-core packed battery has the following beneficial effects compared with the prior art:

[0022] (1) By arranging the top cover positioning plate, the connecting sheet positioning block and the connecting sheet positioning clamping groove, the battery connecting sheet and the battery top cover can be directly clamped and positioned, the relative position of the battery top cover and the battery connecting sheet is fixed, the subsequent welding operation is facilitated, and the production of the single-core packed battery is facilitated.

[0023] (2) By arranging the avoiding chamfer on the groove bottom of the lower end of the connecting sheet positioning clamping groove, the connecting sheet positioning block can be smoothly lifted after welding, and the use convenience of the device is better.

[0024] (3) By arranging the laser channel, the laser can pass through the connecting sheet positioning block, and the battery connecting sheet is convenient for welding. At the same time, the top end of the connecting sheet positioning block is higher than the top end of the battery connecting sheet, which can prevent the battery connecting sheet from being damaged when the welding equipment blows air and the dust suction mechanism is pressed down.

[0025] (4) By setting the positioning pin and positioning hole, the relative position of the top cover positioning plate and the connecting piece positioning block is facilitated, and the positioning of the battery connecting piece and the battery top cover is more accurate, thereby improving the welding quality. At the same time, the positioning hole is provided as an oblong hole, so that the connecting piece positioning block can be smoothly inserted and matched with the positioning pin and the positioning hole when it is turned over. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description. Obviously, the drawings described below are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0027] Figure 1 It is a perspective view of the positioning mechanism for laser welding of the connecting piece of the single-core packed battery of the present application;

[0028] Figure 2 It is a perspective view of the connecting piece positioning block of the present application;

[0029] Figure 3 It is a use state diagram of the positioning mechanism for laser welding of the connecting piece of the single-core packed battery of the present application;

[0030] Figure 4 It is an insertion state diagram of the insertion pin and the positioning hole;

[0031] Figure 5 It is a structural diagram of the battery top cover and the battery connecting piece;

[0032] In the figure: 1, top cover positioning plate; 2, connecting piece positioning block; 3, battery top cover; 4, battery connecting piece; 101, insertion pin; 102, top cover profiling groove; 103, top cover positioning pin; 104, bolt mounting hole; 201, laser channel; 202, connecting piece positioning slot; 203, positioning hole; 301, pin hole; 2021, avoidance chamfer. DETAILED DESCRIPTION

[0033] The technical solutions in the present application will be described clearly and completely below in combination with the specific implementation manners of the present application. Obviously, the described implementation manners are only some implementation manners of the present application, but not all the implementation manners. Based on the implementation manners in the present application, all the other implementation manners obtained by those skilled in the art without creative labor are within the protection scope of the present application.

[0034] As Figures 1-4The utility model discloses a kind of positioning mechanism for laser welding of connecting piece of single-core package battery, as shown in the utility model, the positioning mechanism is mainly used for the welding operation of battery top cover 3 and battery connecting piece 4 shown in the figure, when using the positioning mechanism, the positioning mechanism is fixed on the welding table of welding equipment by bolt. Figure 5

[0035] Wherein, the positioning mechanism for laser welding of connecting piece of single-core package battery of the utility model includes top cover positioning plate 1, further includes connecting piece positioning block 2, wherein,

[0036] The middle position of the top of top cover positioning plate 1 is used for the positioning placement of battery top cover 3, and one connecting piece positioning block 2 that can be vertically overturned is arranged on both sides of the top of top cover positioning plate 1;Connecting piece positioning block 2 is used for tightly fixing battery connecting piece 4 on the top of battery top cover 3, and laser channel 201 is vertically through and arranged on connecting piece positioning block 2 and corresponds the welding position of battery top cover 3 and battery connecting piece 4;Connecting piece positioning clamping groove 202 is arranged on the opposite end of the two connecting piece positioning blocks 2, and connecting piece positioning clamping groove 202 is used for clamping the top of battery connecting piece 4.

[0037] Before welding, battery top cover 3 is positioned and placed in the middle position of the top of top cover positioning plate 1, then one battery connecting piece 4 is placed on both sides of the top of top cover positioning plate 1, and the two connecting piece positioning blocks 2 are overturned to tightly fix on the corresponding battery connecting piece 4. With this structure, it is convenient to directly clamp and position battery top cover 3 and battery connecting piece 4, realize the fixation of the relative position of battery top cover 3 and battery connecting piece 4, facilitate subsequent welding operation, and provide convenience for the production of single-core package battery.

[0038] When welding, welding laser passes through laser channel 201, and the welding position of battery top cover 3 and battery connecting piece 4 is welded, Figure 5 The position indicated by arrow a in the figure is the welding position of battery top cover 3 and battery connecting piece 4. At the same time, the thickness of connecting piece positioning block 2 is greater than the height of battery connecting piece 4 after positioning, for example, the top end of connecting piece positioning block 2 is 5-20mm higher than the top end of battery connecting piece 4 after clamping and positioning, and it can also be other appropriate dimensions, so as to protect battery connecting piece 4, which can prevent battery connecting piece 4 from being damaged when the air blowing and dust suction mechanism of welding equipment is pressed down.

[0039] ​The connecting piece positioning and clamping groove 202 is used for matching the pole piece part of the battery connecting piece 4, wherein the battery connecting piece 4 comprises a pole piece part and a connecting part, both of which are in a sheet structure and are integrally formed by sheet metal, and the pole piece part is vertically arranged and is used for being sleeved into the connecting piece positioning and clamping groove 202, and the connecting part is horizontally arranged and is used for being laid on the top of the battery top cover 3. In this structure, the thickness of the pole piece part is equal to the groove width of the connecting piece positioning and clamping groove 202, and after the pole piece part of the battery connecting piece 4 is clamped into the groove inner side of the connecting piece positioning and clamping groove 202, the pole piece part cannot be transversely displaced, and after welding, the battery connecting piece 4 can be smoothly removed from the connecting piece positioning and clamping groove 202.

[0040] The top of the top cover positioning plate 1 is connected with the side end of the connecting piece positioning block 2 through a hinge. Figure 1 In this structure, the hinge is arranged at the side end of the two connecting piece positioning blocks 2 opposite to each other, one end of the hinge is connected with the side end of the connecting piece positioning block 2 through a screw, and the other end is connected with the top of the top cover positioning plate 1 through a screw. The hinge makes the connecting piece positioning block 2 turn smoothly. Meanwhile, the top cover positioning plate 1 is designed to be made of plastic material, so as to avoid scratching the battery top cover 3. In addition, the connecting piece positioning block 2 is designed to be made of red copper material, so as to avoid deformation of the connecting piece positioning block 2 due to heat during welding, and the connecting piece positioning block 2 can also press the battery connecting piece 4 tightly by weight.

[0041] The top of the top cover positioning plate 1 is provided with a top cover profiling groove 102, and the shape of the top cover profiling groove 102 is matched with the shape of the battery top cover 3. Figure 5 In this structure, the battery top cover 3 is in a rectangular plate structure, and therefore, the shape of the top cover profiling groove 102 is also rectangular. During welding, the battery top cover 3 is placed into the top cover profiling groove 102, so as to realize positioning and placement of the battery top cover 3, and after welding, the battery top cover 3 is taken out. In addition, when the bottom of the battery top cover 3 has a protruding structure, a sunken groove structure is also designed on the groove bottom of the top cover profiling groove 102, which is used for matching the protruding structure.

[0042] Meanwhile, the groove bottom of the top cover profiling groove 102 is provided with a top cover positioning pin 103, and correspondingly, the battery top cover 3 is provided with a pin hole 301. During positioning, the top cover positioning pin 103 is inserted into the pin hole 301 in an up-down mode, so as to further position the battery top cover 3 and improve the matching precision, thereby improving the welding quality.

[0043] Both sides of the top of the top cover positioning plate 1 are provided with bolt mounting holes 104, which are used for mounting bolts, so as to fix the top cover positioning plate 1 on the welding table of a welding device.

[0044] The top of the top cover positioning plate 1 is further provided with a latch 101, and the connecting plate positioning block 2 is provided with a positioning hole 203, wherein the latch 101 is inserted into the positioning hole 203 in an up-down mode. Through the insertion structure, the relative position of the top cover positioning plate 1 and the connecting plate positioning block 2 is fixed, so as to improve the matching precision and then improve the welding quality.

[0045] The positioning hole 203 is a long circular hole, and when the connecting plate positioning block 2 is turned over, the long circular positioning hole 203 avoids the latch 101 to prevent interference, so that the connecting plate positioning block 2 can be smoothly turned over.

[0046] In the above positioning mechanism, the connecting plate positioning clamping groove 202 is connected to the connecting plate positioning block 2 in an up-down mode, and the slot processing is facilitated.

[0047] Meanwhile, the bottom of the connecting plate positioning clamping groove 202 is provided with an avoiding chamfer 2021, so as to prevent the battery connecting plate 4 from being limited after welding. When the connecting plate positioning block 2 is turned over, the battery connecting plate 4 is avoided by the avoiding chamfer 2021, so that the connecting plate positioning block 2 can be smoothly lifted after welding, and the use convenience of the device is better.

[0048] The use method of the positioning mechanism for the single-core packed battery connecting plate laser welding is as follows:

[0049] The connecting plate positioning block 2 is opened, the battery top cover 3 is positioned and placed on the top of the top cover positioning plate 1, and the top cover profiling groove 102 is used to realize the positioning of the battery top cover 3. Then, the battery connecting plate 4 is placed on the battery top cover 3, the connecting plate positioning block 2 is turned over to press the battery connecting plate 4, and the connecting plate positioning clamping groove 202 is used to realize the positioning of the connecting plate positioning block 2. After welding, the connecting plate positioning block 2 is opened, and the product is taken out.

[0050] The above is only a preferred embodiment of the present application, and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A positioning mechanism for laser welding of a tab for a single core packed battery, comprising a top cover positioning plate (1), characterized in that: Also include the connecting piece positioning block (2), wherein, The middle position of the top of the top cover positioning plate (1) is used for positioning and placing the battery top cover (3), and both sides of the top of the top cover positioning plate (1) are provided with a connecting piece positioning block (2) which can be vertically flipped; The connecting piece positioning block (2) is used for pressing and fixing the battery connecting piece (4) on the top of the battery top cover (3), and a laser channel (201) is vertically arranged on the connecting piece positioning block (2) and corresponds to the welding position of the battery top cover (3) and the battery connecting piece (4). Both ends of the connecting piece positioning block (2) are provided with a connecting piece positioning slot (202), and the connecting piece positioning slot (202) is used for clamping the top of the battery connecting piece (4).

2. A positioning mechanism for laser welding of a tab for a single-jelly-roll battery as claimed in claim 1, characterized in that: The top of the top cover positioning plate (1) is connected with the side end of the connecting piece positioning block (2) through a hinge.

3. A positioning mechanism for laser welding of a tab for a single-jelly-roll battery as claimed in claim 2, characterized in that: The top of the top cover positioning plate (1) is provided with a top cover profiling groove (102), wherein, The shape of the top cover profiling groove (102) is matched with the shape of the battery top cover (3).

4. A positioning mechanism for laser welding of tabs for single-jelly-roll batteries as defined in claim 3, characterized in that: The bottom of the top cover profiling groove (102) is provided with a top cover positioning pin (103).

5. A positioning mechanism for laser welding of tabs for single-jelly-roll batteries as defined in claim 4, characterized in that: Both sides of the top of the top cover positioning plate (1) are provided with bolt mounting holes (104).

6. A positioning mechanism for laser welding of tabs for single-jelly-roll batteries as defined in claim 1, characterized in that: The connecting piece positioning slot (202) vertically penetrates the connecting piece positioning block (2).

7. A positioning mechanism for laser welding of tabs for single-jelly-roll batteries as defined in claim 1, wherein: The bottom of the connecting piece positioning slot (202) is provided with a relief chamfer (2021).

8. A positioning mechanism for laser welding of tabs for single-jelly-roll batteries as defined in claim 1, wherein: The top of the top cover positioning plate (1) is provided with a latch (101), and the connecting piece positioning block (2) is provided with a positioning hole (203), wherein, The latch (101) and the positioning hole (203) are vertically inserted.

9. A positioning mechanism for laser welding of tabs for single-jelly-roll batteries as defined in claim 8, characterized in that: The positioning hole (203) is a long circular hole.

10. A positioning mechanism for laser welding of tabs for single-jelly-roll batteries as defined in claim 1, wherein: The top end of the connecting piece positioning block (2) is 5-20mm higher than the top end of the battery connecting piece (4).

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