Battery welding equipment and battery

Abstract

The utility model relates to the technical field of battery welding, in particular to battery welding equipment and a battery. The battery welding equipment comprises a first welding head, a loading mechanism, a driving device and a movement module, the first welding head comprises a mounting base and an electrode tip, the electrode tip and the mounting base are detachably connected and can relatively slide in the first direction, and the driving device is used for driving the electrode tip to slide in the first direction; the loading mechanism comprises a feeding area and a discharging area, unused electrode tips are placed in the feeding area, and used electrode tips are placed in the discharging area; the moving module is used for driving the loading mechanism to be switched between at least a first station and a second station, and when the loading mechanism is located at the first station, the driving device drives the used electrode tips to move to the discharging area from the mounting base; and when the loading mechanism is located at the second station, the driving device drives the unused electrode tips to move from the feeding area to the mounting base. According to the battery welding equipment, automatic replacement of the electrode tip can be achieved, manpower is saved, and the welding quality can be improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery welding, in particular to a battery welding device and a battery. BACKGROUND

[0002] In the process of battery welding, especially for the welding process of battery tab by resistance welding, the battery tab is easy to adhere to the welding head in the process of resistance welding, resulting in the formation of deposits on the surface of the welding head. Moreover, long-term use may cause the welding head to wear or be consumed, thereby affecting the welding effect. In order to ensure the welding quality, the welding head needs to be replaced regularly. However, the welding head of the existing battery welding device usually needs to be replaced manually, which is time-consuming and laborious. CONTENT OF THE UTILITY MODEL

[0003] The present application discloses a battery welding device and a battery, which is used to improve the replacement efficiency of the welding head of the battery welding device.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0005] In a first aspect, the present application provides a battery welding device, which comprises a first welding head, a loading mechanism, a driving device and a movement module. The first welding head comprises a mounting seat and an electrode head. The electrode head is detachably connected with the mounting seat and can slide relative to the mounting seat along a first direction. The driving device is used to drive the electrode head to slide along the first direction. The loading mechanism comprises a feeding area and a discharging area. The feeding area is used to place unused electrode heads, and the discharging area is used to place used electrode heads. The movement module is used to drive the loading mechanism to switch between at least a first station and a second station. When the loading mechanism is at the first station, the driving device drives the used electrode head to move from the mounting seat to the discharging area. When the loading mechanism is at the second station, the driving device drives the unused electrode head to move from the feeding area to the mounting seat.

[0006] When it is necessary to replace the electrode head of the first welding head, first, the movement module drives the loading mechanism to be at the first station, and the driving device drives the used electrode head on the mounting seat to slide relative to the mounting seat along the first direction, so as to move the used electrode head from the mounting seat to the discharging area. Then, the movement module drives the loading mechanism to be at the second station, and the driving device drives the unused electrode head to move from the feeding area to the mounting seat, thereby completing the replacement of the electrode head. The battery welding device in the present application can realize the automatic replacement of the electrode head, save manpower, and avoid the adhesion of the deposits on the surface of the electrode head to the workpiece to be welded due to the long use of the electrode head, which helps to improve the welding quality.

[0007] In a second aspect, the application provides a battery welded by the battery welding device of the first aspect, the battery comprising a battery cell and a shell, the shell being provided with a battery post, the shell forming a containing space, the battery cell being arranged in the containing space, the battery cell comprising a battery cell body and a battery tab, the battery tab being a current output end of the battery cell, the battery post being a current output end of the battery, and the battery tab being electrically connected to the battery post by resistance welding.

[0008] The battery is welded by the battery welding device of the first aspect, the battery welding device can realize automatic replacement of the electrode head, avoid long-time use of the electrode head, and avoid adhesion between the electrode head and the battery tab during the battery welding process, thereby improving the welding quality of the battery and further improving the performance of the battery. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 FIG. 1 is a structural schematic diagram of a battery welding device according to an embodiment of the application;

[0010] Figure 2 FIG. 2 is a partial enlarged view of A shown in FIG. 1; Figure 1

[0011] Figure 3 FIG. 3 is a structural schematic diagram of a battery welding device according to an embodiment of the application;

[0012] Figure 4 FIG. 4 is an exploded view of a first welding head according to an embodiment of the application;

[0013] Figure 5 FIG. 5 is a structural schematic diagram of an electrode head of the first welding head according to an embodiment of the application;

[0014] Figure 6 FIG. 6 is a structural schematic diagram of a battery according to an embodiment of the application;

[0015] Figure 7 FIG. 7 is a structural schematic diagram of a battery cell according to an embodiment of the application.

[0016] FIG. 1 is a structural schematic diagram of a battery welding device according to an embodiment of the application; ​

[0017] 10-Base;

[0018] 1-Battery; 11-Cell; 11a-Cell body; 11b-Battery tab; 11b1-Positive tab; 11b2-Negative tab; 12-Casing; 13-Battery terminal; 13a-Positive terminal; 13b-Negative terminal. Detailed Implementation

[0019] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0020] During battery welding, especially when the cell tabs are welded by resistance welding, the positive or negative tabs are prone to sticking to the welding head during the resistance welding process.

[0021] In view of this, this application provides a battery welding device. Figure 1 This is a schematic diagram of the structure of a battery welding device according to an embodiment of this application. Figure 2 for Figure 1 A magnified view of point A shown in the image, refer to... Figure 1 and Figure 2 The battery welding equipment includes a first welding head 100, a loading mechanism 200, a driving device 300, and a motion module 400. The first welding head 100 includes a mounting base 110 and an electrode head 120. The electrode head 120 is detachably connected to the mounting base 110 and can slide relative to it along a first direction D1. The driving device 300 drives the electrode head 120 to slide along the first direction D1. The loading mechanism 200 includes a loading area 210 and a unloading area 220. The loading area 210 is used to place unused electrode heads 120, and the unloading area 220 is used to place used electrode heads 120. The motion module 400 is used to drive the loading mechanism 200 to switch between at least a first station and a second station. When the loading mechanism 200 is in the first station, the drive device 300 drives the used electrode head 120 to move from the mounting base 110 to the unloading area 220. When the loading mechanism 200 is in the second station, the drive device 300 drives the unused electrode head 120 to move from the loading area 210 to the mounting base 110.

[0022] Continue to refer to Figure 1The battery welding device in the application can include a base 10 and a support 900 arranged on the base 10, and a first welding head 100 arranged on the support 900. Optionally, the first welding head 100 is detachably connected with the support 900, so as to facilitate the operation and maintenance of the first welding head 100 as a whole.

[0023] In an optional scheme of the embodiment, the battery welding device can include a second welding head 800, and the first welding head 100 and the second welding head 800 are oppositely arranged. It can be understood that when the battery welding device is in an upright state, the first welding head 100 and the second welding head 800 are oppositely arranged along the vertical direction, the first welding head 100 is a lower welding head, and the second welding head 800 is an upper welding head.

[0024] In an optional scheme of the embodiment, the driving device 300 includes a first driving member (not shown in the figure) and a second driving member 310, wherein when the loading mechanism 200 is in the first working position, the first driving member drives the used electrode head 120 to move from the mounting seat 110 to the unloading area 220; when the loading mechanism 200 is in the second working position, the second driving member 310 drives the unused electrode head 120 to move from the feeding area 210 to the mounting seat 110.

[0025] The first driving member includes but is not limited to a cylinder, a lead screw, and a motor. The second driving member 310 includes but is not limited to a cylinder, a lead screw, and a motor. In the embodiment of the application, a cylinder is taken as an example for description.

[0026] Referring to Figure 2 The unloading area 220 includes at least one first accommodating groove 221 extending along the first direction D1 and having both ends open. When the opening of the first accommodating groove 221 is aligned with the electrode head 120 on the mounting seat 110, the loading mechanism 200 is in the first working position, and the first driving member, for example, a cylinder, drives the used electrode head 120 to slide along the first direction D1 through the piston rod, so as to separate the used electrode head 120 from the mounting seat 110 and make the used electrode head 120 enter the first accommodating groove 221 from the opening of the first accommodating groove 221.

[0027] Continuing to refer to Figure 2 The feeding area 210 includes at least one second accommodating groove 211 extending along the first direction D1 and having both ends open. When the opening of the second accommodating groove 211 is aligned with the empty position on the mounting seat 110, the loading mechanism 200 is in the second working position, and the second driving member 310, for example, a cylinder, drives the unused electrode head 120 to slide along the first direction D1 through the piston rod, so as to make the unused electrode head 120 slide out of the second accommodating groove 211 and move to the mounting seat 110, thereby completing the replacement of the electrode head 120.

[0028] It can be understood that, along the first direction D1, the feeding area 210 and the discharging area 220 can be located on both sides of the mounting base 110, or the feeding area 210 and the discharging area 220 can be located on the same side of the mounting base 110, which is specifically set according to actual needs. The following examples are described by taking the feeding area 210 and the discharging area 220 located on the same side of the mounting base 110 as an example.

[0029] In an optional solution of the embodiment, the loading mechanism 200 includes a sliding table 230, the feeding area 210 and the discharging area 220 are arranged on the sliding table 230, the first accommodating groove 221 and the second accommodating groove 211 are arranged along the second direction D2, and the second direction D2 and the first direction D1 are perpendicular to each other.

[0030] In the embodiment, the number of the first accommodating grooves 221 can be one, two or more, which is specifically set according to actual needs. Similarly, the number of the second accommodating grooves 211 can be one, two or more, which is specifically set according to actual needs.

[0031] In the embodiment, the shape of the first accommodating grooves 221 is set according to the shape of the electrode head 120. Similarly, the shape of the second accommodating grooves 211 is set according to the shape of the electrode head 120.

[0032] In an optional solution of the embodiment, the movement module 400 includes a first guide rail 410 and a first driving unit 420, the sliding table 230 is slidably connected with the first guide rail 410 along the first direction D1, and an output end of the first driving unit 420 is in transmission connection with the sliding table 230, so that the first driving unit 420 can drive the sliding table 230 to slide along the first direction D1 to approach or move away from the mounting base 110 of the first welding head 100.

[0033] Figure 3 FIG. 1 is a structural schematic diagram of a battery welding device according to an embodiment of the present application, referring to Figure 3 The movement module 400 further includes a support table 430, a second guide rail 440 and a second driving unit 450, the first guide rail 410 and the first driving unit 420 are arranged on the support table 430, the support table 430 is slidably connected with the second guide rail 440 along the second direction D2, and an output end of the second driving unit 450 is in transmission connection with the support table 430, so that the second driving unit 450 can drive the support table 430 to slide along the second direction D2 and drive the sliding table 230 to move along the second direction D2, so that the preset first accommodating groove 221 or the second accommodating groove 211 is aligned with the mounting base 110.

[0034] In the embodiment, the first driving unit 420 includes but is not limited to a cylinder, a lead screw or a motor. The second driving unit 450 includes but is not limited to a cylinder, a lead screw or a motor.

[0035] It can be understood that the upper feeding area 210 and the lower feeding area 220 in the present application are both arranged on the sliding table 230, and only one set of movement module 400 can be arranged, which helps to reduce the number of parts and save space.

[0036] Figure 4 An exploded view of the first welding head of an embodiment of the present application, Figure 5 An exploded view of the first welding head of an embodiment of the present application, Figure 4 And Figure 5 As shown in the figures, the mounting seat 110 and the electrode head 120 are connected by sliding through the sliding block assembly 500. The sliding block assembly 500 includes a trapezoidal sliding block 510 and a dovetail groove 520 cooperating with the trapezoidal sliding block 510.

[0037] The trapezoidal sliding block 510 is arranged on the surface of the electrode head 120, and the dovetail groove 520 is arranged on the surface of the mounting seat 110; or the dovetail groove 520 is arranged on the surface of the electrode head 120, and the trapezoidal sliding block 510 is arranged on the surface of the mounting seat 110.

[0038] In an optional embodiment of the present application, the surface of the mounting seat 110 is provided with the dovetail groove 520, and the surface of the electrode head 120 is provided with the trapezoidal sliding block 510. The cross section of the dovetail groove 520 is trapezoidal, and the short side of the trapezoid is the slot of the dovetail groove 520. This shape provides good guidance and lateral force resistance for the dovetail groove 520, preventing the trapezoidal sliding block 510 from moving in a direction perpendicular to the dovetail groove 520, so that the electrode head 120 and the mounting seat 110 can only slide relative to each other in the first direction D1, thereby avoiding the electrode head 120 from being separated from the mounting seat 110 when the workpiece is welded.

[0039] In an optional embodiment of the present application, the mounting seat 110 and the electrode head 120 are connected by clamping through the clamping assembly 600, and the clamping assembly 600 includes a spring protrusion 610 and a clamping groove 620 cooperating with the spring protrusion 610. The spring protrusion 610 is arranged on the surface of the mounting seat 110, and the clamping groove 620 is arranged on the surface of the electrode head 120. Figure 4 And Figure 5 As shown in the figures, the mounting seat 110 is provided with the spring protrusion 610 in the dovetail groove 520, and the surface of the trapezoidal sliding block 510 on the electrode head 120 is provided with the clamping groove 620. Due to the elasticity of the spring protrusion 610, it will be compressed, and when the spring protrusion 610 completely enters the clamping groove 620, the restoring force of the spring protrusion 610 will make the protruding part tightly adhere to the inner wall of the clamping groove 620, thereby realizing the fixation of the electrode head 120 and the mounting seat 110.

[0040] In an optional solution of the embodiment, a clamping and limiting assembly 700 is arranged between the mounting base 110 and the electrode head 120, and the clamping and limiting assembly 700 comprises a positioning pin 710 and a positioning groove 720 matched with the positioning pin 710. The positioning pin 710 is arranged on the surface of the mounting base 110, and the positioning groove 720 is arranged on the surface of the electrode head 120. When the positioning pin 710 is inserted into the positioning groove 720, the electrode head 120 stops moving relative to the mounting base 110, and the two are installed in place.

[0041] In an optional solution of the embodiment, the positioning groove 720 can be a U-shaped groove. When the loading mechanism 200 is in the second station, along the first direction D1, the positioning pin 710 is arranged at the end of the mounting base 110 away from the feeding area 210, the U-shaped groove is arranged at the end of the electrode head 120 close to the positioning pin 710, and the opening of the U-shaped groove faces the positioning pin 710, that is, the opening of the U-shaped groove faces away from the second driving member 310, so that the electrode head 120 moves from the feeding area 210 to the mounting base 110 under the action of the second driving member 310, and when the U-shaped groove and the positioning pin 710 are clamped, the electrode head 120 stops moving, the electrode head 120 and the mounting base 110 are installed, and the loading mechanism 200 returns to the original position.

[0042] In an optional solution of the embodiment, the battery welding device is a resistance welding device.

[0043] Based on the same technical concept, the application also provides a battery welded by the battery welding device in various possible embodiments of the application, Figure 6 a structural schematic diagram of the battery of an embodiment of the application, Figure 7 a structural schematic diagram of the battery cell of an embodiment of the application, referring to Figure 6 and Figure 7 The battery 1 comprises a battery cell 11 and a shell 12, the shell 12 is provided with a battery post 13, the shell 12 forms a containing space, and the battery cell 11 is arranged in the containing space. The battery cell 11 comprises a battery cell body 11a and a battery tab 11b, the battery tab 11b is a current output end of the battery cell 11, and the battery tab 11b comprises a positive electrode tab 11b1 and a negative electrode tab 11b2. The battery tab 11b can be selected from a copper foil, an aluminum foil, a stainless steel foil, a nickel foil, or a composite foil material containing a high polymer insulating layer. The battery post 13 is a current output end of the battery 1, and the battery post 13 comprises a positive electrode post 13a and a negative electrode post 13b.

[0044] The battery tab 11b and the battery post 13 are electrically connected by resistance welding. The battery tab 11b and the battery post 13 can be directly welded, or the two can be indirectly electrically connected through an adapter sheet. For example, the battery tab 11b is connected to the adapter sheet by resistance welding, and the adapter sheet is connected to the battery post 13 by resistance welding, thereby realizing the electrical connection between the battery tab 11b and the battery post 13.

[0045] Because the battery 1 welding equipment is welded by using various possible embodiments of the application, the battery 1 welding machine can realize automatic replacement of the electrode head, avoid long use of the electrode head, avoid adhesion of the electrode head to the positive electrode lug 11b1 or the negative electrode lug 11b2 during the battery 1 welding process, thereby improving the welding quality of the battery 1, and further improving the performance of the battery 1.

[0046] Obviously, those skilled in the art can make various modifications and variations to the embodiments of the application without departing from the spirit and scope of the application. Thus, if these modifications and variations of the application belong to the scope of the claims of the application and their equivalent technologies, the application also intends to include these modifications and variations.

Claims

1. A battery welding apparatus characterized by, The first welding head, the loading mechanism, the driving device and the movement module, wherein the first welding head comprises a mounting seat and an electrode head, the electrode head is detachably connected with the mounting seat and can slide along a first direction, the driving device is used for driving the electrode head to slide along the first direction; The loading mechanism comprises a feeding area and a discharging area, the feeding area is used for placing unused electrode heads, and the discharging area is used for placing used electrode heads; The movement module is used for driving the loading mechanism to switch between at least a first station and a second station, wherein, When the loading mechanism is at the first station, the driving device drives the used electrode head to move from the mounting seat to the discharging area; When the loading mechanism is at the second station, the driving device drives the unused electrode head to move from the feeding area to the mounting seat.

2. The battery welding apparatus of claim 1, wherein, The mounting seat and the electrode head are connected through a sliding block assembly, the sliding block assembly comprises a trapezoidal sliding block and a dovetail groove matched with the trapezoidal sliding block; Wherein, the trapezoidal sliding block is arranged on the surface of the electrode head, and the dovetail groove is arranged on the surface of the mounting seat; or the dovetail groove is arranged on the surface of the electrode head, and the trapezoidal sliding block is arranged on the surface of the mounting seat.

3. The battery welding apparatus of claim 2, wherein, The mounting seat and the electrode head are connected through a clamping assembly, the clamping assembly comprises a spring protrusion and a clamping groove matched with the spring protrusion, the spring protrusion is arranged on the surface of the mounting seat, and the clamping groove is arranged on the surface of the electrode head.

4. The battery welding apparatus of claim 3, wherein, The mounting seat and the electrode head are connected through a clamping limiting assembly, the clamping limiting assembly comprises a positioning pin and a positioning groove matched with the positioning pin, the positioning pin is arranged on the surface of the mounting seat, and the positioning groove is arranged on the surface of the electrode head.

5. The battery welding apparatus of claim 4, wherein, The positioning groove is a U-shaped groove, when the loading mechanism is at the second station, along the first direction, the U-shaped groove is arranged on the end of the electrode head close to the positioning pin, and the opening of the U-shaped groove faces the positioning pin.

6. The battery welding apparatus of any one of claims 1-5, wherein, The driving device comprises a first driving member and a second driving member, wherein, When the loading mechanism is at the first station, the first driving member drives the used electrode head to move from the mounting seat to the discharging area; When the loading mechanism is at the second station, the second driving member drives the unused electrode head to move from the feeding area to the mounting seat.

7. The battery welding apparatus of any one of claims 1-5, wherein, The discharging area comprises at least one first containing groove extending along the first direction and having openings at both ends, when the openings of the first containing groove are aligned with the electrode head on the mounting seat, the loading mechanism is at the first station; The feeding area comprises at least one second containing groove extending along the first direction and having openings at both ends, when the openings of the second containing groove are aligned with the empty position on the mounting seat, the loading mechanism is at the second station.

8. The battery welding apparatus of claim 7, wherein, The loading mechanism comprises a sliding table, the feeding area and the discharging area are arranged on the sliding table, the first containing groove and the second containing groove are arranged along a second direction, and the second direction and the first direction are perpendicular to each other.

9. The battery welding apparatus of claim 8, wherein, The movement module comprises a first guide rail and a first driving unit, the sliding table is slidably connected with the first guide rail in the first direction, and an output end of the first driving unit is drivingly connected with the sliding table.

10. The battery welding apparatus of claim 9, wherein, The movement module further comprises a supporting table, a second guide rail and a second driving unit, the first guide rail and the first driving unit are arranged on the supporting table, the supporting table is slidably connected with the second guide rail in the second direction, and an output end of the second driving unit is drivingly connected with the supporting table.

11. The battery welding apparatus of any one of claims 1-5, wherein, The battery welding device is a resistance welding device.

12. A battery, characterized by The battery is welded by the battery welding device according to any one of claims 1-11, the battery comprises a cell and a shell, the shell is provided with a battery post, the shell forms an accommodating space, the cell is arranged in the accommodating space, the cell comprises a cell body and a battery tab, the battery tab is a current output end of the cell, the battery post is a current output end of the battery, and the battery tab and the battery post are electrically connected through resistance welding.

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