Battery welding press-fitting device and welding equipment

Abstract

The utility model belongs to the technical field of battery production, and discloses a battery welding press-fitting device and welding equipment. The battery welding and press-fitting device comprises a battery bearing table and a reference part, wherein the battery bearing table is used for placing a single battery; the reference part is arranged on the battery bearing table, the reference part can be close to or away from the battery bearing table in the first direction, a single battery can be clamped and fixed between the reference part and the battery bearing table, a top cover of the single battery can be attached to the reference part, and a welding avoiding hole is formed in the reference part; and an external welding head assembly can penetrate through the welding avoiding hole and is used for welding the top cover of the single battery. According to the battery welding and press-fitting device, the top cover of the single battery can be welded with the top cover of the single battery as the reference, positioning is more accurate, the battery welding and press-fitting device is suitable for welding of the single batteries of different sizes and specifications, the welding precision is higher, and the welding quality and the welding efficiency of the single battery can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery production technical field especially relates to a battery welding press -fitting device and welding equipment. BACKGROUND

[0002] Square aluminum shell lithium battery usually needs to carry out the press -fitting of cover plate and aluminum shell before laser welding, then put on the tooling and carry out laser spot welding, the prior art usually adopts manual mode to carry out the press -fitting of cover plate and aluminum shell, because manual press -fitting cannot guarantee the installation consistency and installation precision of aluminum shell and cover plate, so as to cause the poor laser welding effect, cause the low battery finished product yield, and the production efficiency is low, and the battery will shake when full welding after spot welding, and the battery will have the deformation rupture condition. In addition, the prior art also provides the welding press -fitting mechanism to the press -fitting of lithium battery, but the traditional battery welding press -fitting mechanism mostly uses fixed specification battery fixture, with the bottom surface of battery fixture as the datum, however, this press -fitting mode has the problem of welding precision error, and a set of press -fitting mechanism is only applicable to specific matched battery, and the applicability is poor, and welding cannot be protected for lithium battery, and cannot suck the smoke and dust generated during welding in time, thereby affecting the welding effect between cover plate and aluminum shell, and affecting the quality of lithium battery.

[0003] Therefore, it is urgent to provide a novel battery welding press -fitting device and welding equipment to solve the above technical problems in the prior art. UTILITY MODEL CONTENTS

[0004] One purpose of the utility model is to provide a battery welding press -fitting device applicable to the welding of single batteries of different size specifications, and high welding precision can improve the welding quality and efficiency of single batteries.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] The battery welding press -fitting device comprises a battery bearing table and a reference element, the battery bearing table is used for placing a single battery, the reference element is arranged on the battery bearing table, the reference element can approach or move away from the battery bearing table along a first direction, the single battery can be clamped and fixed between the reference element and the battery bearing table, the top cover of the single battery can be attached to the reference element, the reference element is provided with a welding avoidance hole, and an external welding head assembly can pass through the welding avoidance hole and weld the top cover of the single battery.

[0007] Optionally, along the first direction, one end of the battery bearing table close to the reference element is provided with a floating stage, a elastic element is clamped between the floating stage and the battery bearing table, and the floating stage is used for placing the single battery.

[0008] Optionally, the battery carrying table is provided with a guide column extending along the first direction, and the floating platform is fixedly provided with a linear bearing, and the guide column is matched with the linear bearing.

[0009] Optionally, the battery carrying table is provided with a fixed column extending along the first direction at each end along the second direction, and the reference element is slidingly connected to the two fixed columns at each end along the second direction.

[0010] Optionally, the fixed column is fixedly provided with a driving element, the reference element comprises a working part and two connecting parts, the output end of the driving element is connected with the working part, the working part is provided with the welding avoidance hole, and the top cover of the single battery can be attached to the working part; the two connecting parts are provided at each end of the working part along the second direction, the connecting part is provided along the first direction, and the connecting part and the fixed column are clamped with a sliding rail.

[0011] Optionally, along the first direction, the working part is provided with a reference boss close to one end of the battery carrying table, the reference boss is protrudingly arranged towards the battery carrying table, and the top cover of the single battery can be attached to the reference boss.

[0012] Optionally, the fixed column is provided with a plurality of limit sensors along the first direction, and the connecting part is provided with a limit trigger element, and the limit trigger element can selectively trigger the limit sensor.

[0013] Another purpose of the utility model is to provide a kind of battery welding equipment, which comprises welding head assembly and the battery welding press-fitting device as described in any of the above solutions, and the welding head assembly can be directly opposite the welding avoidance hole, and the top cover of the single battery is welded.

[0014] Optionally, the welding head assembly comprises a welding support and a welding head, the welding head is arranged in the welding support and can move along the first direction, the second direction and the third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

[0015] Optionally, the laser outlet of the welding head is provided with a blowing assembly and a dust extraction assembly, the blowing assembly is used to blow protective gas to the welding avoidance hole, and the dust extraction assembly is used to suck smoke and dust generated during welding.

[0016] Advantages:

[0017] The battery welding and press-fitting device provided by the utility model uses the battery bearing table to place the single battery, so that the top cover of the single battery is at a position away from the battery bearing table along the first direction, the reference element is arranged on the battery bearing table and can be close to the battery bearing table along the first direction, so that the reference element and the battery bearing table clamp and fix the single battery, in this process, the reference element can be attached to the top cover of the single battery, and the reference element plays a role of reference positioning, and then the welding head assembly outside passes through the welding avoiding hole on the reference element to weld the top cover of the single battery. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is the axonometric view of the battery welding equipment provided by the utility model embodiment;

[0019] Figure 2 is the axonometric view of the part mechanism of the battery welding and press-fitting device provided by the utility model embodiment;

[0020] Figure 3 is the axonometric view of the welding head assembly provided by the utility model embodiment.

[0021] In the drawings:

[0022] 10, single battery;

[0023] 100, battery bearing table; 101, guide column; 110, fixed column; 111, driving element; 112, sliding rail; 113, limit sensor; 120, floating bearing table; 121, elastic element; 122, linear bearing;

[0024] 200, reference element; 201, welding avoiding hole; 210, working part; 220, connecting part; 221, limit trigger element; 211, reference boss;

[0025] 300, welding head assembly; 310, welding support; 311, first driving mechanism; 312, second driving mechanism; 313, third driving mechanism; 320, welding machine head; 321, laser outlet; 322, blowing assembly; 323, dust extraction assembly. DETAILED DESCRIPTION

[0026] The utility model will be described in further detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are merely intended to explain the utility model and not to limit the utility model. In addition, it should be noted that only the parts related to the utility model are shown in the drawings for ease of description, not all the structures.

[0027] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0028] In the utility model, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0029] In the description of the embodiment, the terms "upper", "lower", "right", etc. orientation or position relationship is based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only used to distinguish in description and have no special meaning.

[0030] The first direction described in the embodiment is the X direction shown in Figure 1 and Figure 2 , that is, the vertical direction; the second direction is the Y direction shown in Figure 1 and Figure 2 , that is, the length direction of the single battery 10 in the horizontal direction; the third direction is the Z direction shown in Figure 1 , that is, the width direction of the single battery 10 in the horizontal direction; the first direction, the second direction and the third direction are perpendicular to each other.

[0031] Please refer to Figure 1 and Figure 2The battery welding and press-fitting device comprises a battery carrying table 100 and a reference element 200, the battery carrying table 100 is used for placing a single battery 10, the reference element 200 is arranged on the battery carrying table 100, the reference element 200 can be close to or away from the battery carrying table 100 along a first direction, the single battery 10 can be clamped and fixed between the reference element 200 and the battery carrying table 100, the top cover of the single battery 10 can be attached to the reference element 200, the reference element 200 is provided with a welding avoiding hole 201, and an external welding head assembly 300 can pass through the welding avoiding hole 201 and weld the top cover of the single battery 10.

[0032] The battery welding and press-fitting device in the embodiment places the single battery 10 by using the battery carrying table 100, so that the top cover of the battery is at a position away from the battery carrying table 100 along the first direction, the reference element 200 is arranged on the battery carrying table 100 and can be close to the battery carrying table 100 along the first direction, so that the reference element 200 and the battery carrying table 100 clamp and fix the single battery 10, in this process, the reference element 200 can be attached to the top cover of the single battery 10, and play a role of reference positioning, and then the external welding head assembly 300 passes through the welding avoiding hole 201 on the reference element 200 to weld the top cover of the single battery 10. The battery welding and press-fitting device can take the top cover of the single battery 10 as a reference to weld the top cover of the single battery 10, and the positioning is more accurate, compared with the press-fitting device taking the bottom wall of the single battery 10 as a reference, the battery welding and press-fitting device is suitable for welding of single batteries 10 of different sizes, and has higher welding precision, which can improve the welding quality and welding efficiency of the single battery 10.

[0033] Further, along the first direction, one end of the battery carrying table 100 close to the reference element 200 is provided with a floating table 120, a elastic element 121 is clamped between the floating table 120 and the battery carrying table 100, and the floating table 120 is used for placing the single battery 10. The floating table 120 carries the single battery 10 above the battery carrying table 100, and even if the bottom wall of the single battery 10 is uneven or inclined, the top cover of the single battery 10 can always be attached to the reference element 200 due to the clamping of the elastic element 121 between the floating table 120 and the battery carrying table 100, which plays a role of positioning by taking the top cover of the single battery 10 as a reference during welding, and the positioning is more accurate, and the single battery 10 can be clamped and fixed by using the elastic force of the elastic element 121, the fixing effect is better, and the welding quality can be further improved.

[0034] In the embodiment, the elastic members 121 are arranged at intervals, specifically, four elastic members 121 are arranged at the four corners of the battery carrying table 100, which can make the stress of the floating table 120 more uniform, and details are not repeated here.

[0035] Further, the battery carrying table 100 is provided with a guide column 101 extending in the first direction, the floating table 120 is fixedly provided with a linear bearing 122, and the guide column 101 is fitted into the linear bearing 122. The arrangement of the guide column 101 can ensure the stability of the movement of the floating table 120 in the first direction, and play a guiding and limiting role. The linear bearing 122 is used in cooperation with the guide column 101, which moves more smoothly and does not affect the normal movement of the floating table 120 in the first direction.

[0036] Please continue to refer to Figure 2 The battery carrying table 100 is provided with a fixed column 110 extending in the first direction at both ends in the second direction, and the reference element 200 is slidingly connected to the two fixed columns 110 in the second direction. The sliding cooperation of the reference element 200 with the fixed column 110 extending in the first direction can limit and guide the reference element 200, and ensure that the reference element 200 can move smoothly on the battery carrying table 100 in the first direction.

[0037] In the embodiment, the fixed column 110 is fixedly provided with a driving element 111, the reference element 200 includes a working part 210 and two connecting parts 220, the output end of the driving element 111 is connected with the working part 210, the working part 210 is provided with the welding avoiding hole 201, and the top cover of the single battery 10 can be attached to the working part 210; the two connecting parts 220 are arranged at both ends of the working part 210 in the second direction, the connecting part 220 extends in the first direction, and the sliding rail 112 is clamped between the connecting part 220 and the fixed column 110. The working part 210 of the reference element 200 is driven by the driving element 111, the two ends of the working part 210 are connected with the connecting part 220, the connecting part 220 is slidingly connected to the fixed column 110 through the sliding rail 112, which ensures the smooth sliding of the reference element 200 in the first direction, and the movement is more stable, which can improve the positioning and clamping effect of the single battery 10, and improve the welding effect of the top cover of the single battery 10.

[0038] The driving element 111 in the embodiment is a driving cylinder, and details are not repeated here.

[0039] Further, along the first direction, the working part 210 is provided with a reference boss 211 at one end close to the battery carrier table 100, the reference boss 211 is protruding towards the battery carrier table 100, and the top cover of the single battery 10 can be attached to the reference boss 211. In this embodiment, the reference boss 211 is made of nano ceramic, which means that the phase of the microstructure has a nanoscale size of the ceramic material, and the mechanical properties of the nano ceramic are mainly reflected in the hardness, bending strength, ductility and fracture toughness, which are very excellent. When the reference boss 211 is made, not only can the single battery 10 top cover be attached to the reference boss 211, but also the single battery 10 top cover can avoid scratching the reference boss 211, and avoid affecting the reliability of the reference boss 211 as a reference surface. In this embodiment, the reference boss 211 is spaced apart and has a plurality of reference bosses, which can further improve the accuracy of the single battery 10 top cover as a reference, and further improve the welding quality.

[0040] In this embodiment, the fixed column 110 is spaced apart and has a plurality of limit sensors 113 along the first direction, and the connecting part 220 is provided with a limit trigger 221, and the limit trigger 221 can selectively trigger the limit sensor 113. The limit sensor 113 in this embodiment is a photoelectric sensor switch, and the limit trigger 221 is a baffle. When the baffle blocks the photoelectric sensor switch, it can be sensed whether the single battery 10 on the battery carrier table 100 is moved in place, so as to perform the automatic welding process of the single battery 10 top cover, and improve the production efficiency of the single battery 10.

[0041] Specifically, the limit sensor 113 is provided with two along the first direction, which cooperates with the limit trigger 221 to play the upper limit and lower limit roles, and is used to sense whether the single battery 10 is on the battery carrier table 100, which will not be described here.

[0042] As shown in Figure 1 and Figure 3 This embodiment also provides a battery welding equipment, which comprises a welding head assembly 300 and a battery welding press-fitting device as described in any of the above solutions, and the welding head assembly 300 can face the welding avoidance hole 201 and weld the top cover of the single battery 10.

[0043] The battery welding equipment has all the effects of the battery welding and pressing device in any of the above schemes. Specifically, when welding the top cover of the single battery 10, the battery welding and pressing device can use the top cover of the single battery 10 as a reference to weld the top cover of the single battery 10, so that the positioning is more accurate. Compared with the pressing device using the bottom wall of the single battery 10 as a reference, the battery welding and pressing device is suitable for welding single batteries 10 of different sizes, has higher welding precision, and can improve the welding quality and efficiency of the single battery 10.

[0044] Further, the welding head assembly 300 includes a welding support 310 and a welding head 320, the welding head 320 is arranged on the welding support 310 and can move along the first direction, the second direction and the third direction, and the first direction, the second direction and the third direction are perpendicular to each other. In this embodiment, the third driving mechanism 313 is used to drive the welding head 320 to move along the second direction, the second driving mechanism 312 is used to drive the third driving mechanism 313 to move along the first direction, and the first driving mechanism 311 is used to drive the second driving mechanism 312 to move along the third direction. The first driving mechanism 311 is arranged on the welding support 310, so as to realize the movement of the welding head 320 along the first direction, the second direction and the third direction, facilitate the welding head 320 to align the welding avoidance hole 201 for welding, and the operation is simple and convenient. The welding head 320 can move in three degrees of freedom with the least structure, and the production cost of the battery welding equipment is reduced.

[0045] The first driving mechanism 311, the second driving mechanism 312 and the third driving mechanism 313 are all driving servo motors, which will not be described here.

[0046] In this embodiment, the laser outlet 321 of the welding head 320 is provided with a blowing assembly 322 and a dust extraction assembly 323. The blowing assembly 322 is used to blow protective gas into the welding avoidance hole 201, and the dust extraction assembly 323 is used to suck the smoke and dust generated during welding. In this embodiment, the welding head 320 is a laser welding mechanism, which uses high temperature of laser to weld the top cover of the single battery 10 and the sealing nail. The protective gas is blown during laser welding to prevent deformation and oxidation of the welding part caused by high temperature. At the same time, the dust extraction assembly 323 is used to suck the smoke and dust generated during laser welding to avoid falling on the surface of the top cover of the single battery 10, and also to prevent affecting the emission path of the laser, thereby further improving the welding quality.

[0047] The working process of the welding equipment is described in detail as follows: when the single battery 10 moves to the welding station from the logistics line, the two side driving members 111 are started to lift the reference member 200, when the limiting trigger member 221 rises to the top limiting sensor 113, the single battery 10 enters and is fixed in the floating platform 120, the two side driving members 111 are started to press down the reference member 200, so that the reference boss 211 made of nano ceramic is attached to the top cover of the single battery 10, at this time, the sealing nail is in the center of the welding avoiding hole 201, the elastic member 121 is pressed and shrunk, the first driving mechanism 311, the second driving mechanism 312 and the third driving mechanism 313 are started to drive the welding head 320 to move above the welding avoiding hole 201; the welding head 320 takes the contact surface between the top cover of the single battery 10 and the reference boss 211 as the working reference, the second driving mechanism 312 is started to descend in the first direction to make the laser outlet 321 descend to the set position, during welding, the protective gas is blown to the welding surface from the blowing assembly 322 around the laser outlet, the high-speed dust extraction assembly 323 extracts the dust and smoke generated during welding from the dust extraction port through the dust extraction pipeline, the first driving mechanism 311 and the third driving mechanism 313 drive the welding head 320 to complete the circular welding of the sealing nail at the liquid injection port of the single battery 10 according to the set program; after welding is completed, the protective gas stops being delivered, the dust extraction assembly 323 stops, the first driving mechanism 311, the second driving mechanism 312 and the third driving mechanism 313 are started to reset the welding head 320 to the original state, the two driving members 111 are started to lift the reference member 200 until the limiting trigger member 221 rises to the top limiting sensor 113, the logistics line transports away the single battery 10; after each mechanism completes the action, all mechanisms return to the initial state.

[0048] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not the limitation of the embodiments of the utility model. For ordinary skilled in the art, various obvious changes, re-adjustment and replacement can be carried out without departing from the protection scope of the utility model. Here, it is not necessary and impossible to enumerate all the embodiments. Any modification, equivalent replacement and improvement within the spirit and principle of the utility model should be included in the protection scope of the utility model claim.

Claims

1. A battery weld press device characterized by, The utility model relates to a battery welding device, including: Battery carrying platform (100) for placing single battery (10); Reference element (200) is arranged to the battery carrying platform (100), the reference element (200) can be close to or away from the battery carrying platform (100) along the first direction, the single battery (10) can be clamped and fixed between the reference element (200) and the battery carrying platform (100), the top cover of single battery (10) can be attached to the reference element (200), the reference element (200) is provided with welding avoidance hole (201), and external welding head assembly (300) can pass through the welding avoidance hole (201) and weld the top cover of single battery (10).

2. The battery weld press device of claim 1, wherein, Along the first direction, the end of the battery carrying platform (100) close to the reference element (200) is provided with floating platform (120), and the floating platform (120) is clamped between the battery carrying platform (100) and the elastic element (121), which is used for placing the single battery (10).

3. The battery weld press device of claim 2, wherein, The battery carrying platform (100) is provided with a guide column (101) extending along the first direction, and the floating platform (120) is fixedly provided with a linear bearing (122), and the guide column (101) is matched and penetrated in the linear bearing (122).

4. The battery weld press device of claim 1, wherein, Both ends of the battery carrying platform (100) along the second direction are provided with fixed columns (110) extending along the first direction, and both ends of the reference element (200) along the second direction are correspondingly and slidably connected to the two fixed columns (110).

5. The battery weld press device of claim 4, wherein, The fixed column (110) is fixedly provided with a driving element (111), the reference element (200) includes a working part (210) and two connecting parts (220), the output end of the driving element (111) is connected with the working part (210), the working part (210) is provided with the welding avoidance hole (201), and the top cover of the single battery (10) can be attached to the working part (210); two connecting parts (220) are correspondingly arranged at both ends of the working part (210) along the second direction, the connecting part (220) is arranged along the first direction, and the connecting part (220) and the fixed column (110) are clamped with a slide rail (112).

6. The battery weld press device of claim 5, wherein, Along the first direction, the end of the working part (210) close to the battery carrying platform (100) is provided with a reference boss (211), the reference boss (211) is protrudingly arranged towards the battery carrying platform (100), and the top cover of the single battery (10) can be attached to the reference boss (211).

7. The battery weld press device of claim 5, wherein, The fixed column (110) is provided with a plurality of limit sensors (113) along the first direction, and the connecting part (220) is provided with a limit trigger (221), and the limit trigger (221) can selectively trigger the limit sensor (113).

8. A battery welding apparatus characterized by, The battery welding press-fitting device comprises a welding head assembly (300) and a battery as claimed in any one of claims 1-7, the welding head assembly (300) is capable of facing the welding avoidance hole (201) and welding the top cover of the single battery (10).

9. The battery welding apparatus of claim 8, wherein, The welding head assembly (300) comprises a welding support (310) and a welding head (320), the welding head (320) is arranged on the welding support (310) and is capable of moving along the first direction, the second direction and the third direction, the first direction, the second direction and the third direction are perpendicular to each other.

10. The battery welding apparatus of claim 9, wherein, A blowing assembly (322) and a dust extraction assembly (323) are arranged at the laser outlet (321) of the welding head (320), the blowing assembly (322) is used for blowing protective gas to the welding avoidance hole (201), and the dust extraction assembly (323) is used for sucking smoke and dust generated during welding.

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