A single-sided welding device for a dual-junction battery

Abstract

The utility model discloses a single -sided welding device for double -core battery, including welding rack, the vertical direction of welding rack front top is installed with pressurizing cylinder subassembly, and the bottom output of pressurizing cylinder subassembly is connected with upper electrode subassembly, and the lower electrode subassembly is arranged below the welding rack in the opposite position of upper electrode subassembly, and the lower electrode subassembly top is installed with fixed jig, and the side away from fixed jig of welding rack is installed with transformer, and the positive pole and the negative pole of transformer are electric connection respectively with two groups of conductive block through the soft copper band setting in the inside of welding rack. The utility model two groups of welding head through the center distance of adjusting upper electrode seat to adapt the center distance of welding product, and the lower electrode seat of front and back position adjustable satisfies the different position welding requirement of double -core battery, and the upper electrode seat position bolt connection, and maintenance replacement is more convenient.

Description

Technical Field

[0001] This utility model relates to the field of welding equipment technology, and in particular to a single-sided welding device for dual-cell batteries. Background Technology

[0002] Dual-cell batteries are a type of battery designed with two individual cells. By dividing the battery into two independent cells, charge pump technology is used to achieve simultaneous charging, thereby improving charging efficiency. Traditional welding equipment typically welds cells with opposite positive and negative electrodes vertically, which cannot meet the welding requirements of dual-cell batteries with the positive and negative electrodes on the same side. In addition, the two independent cells of a dual-cell battery cannot be directly welded due to their structural characteristics, requiring fixtures for positioning. Therefore, there is an urgent need for a welding device suitable for dual-cell batteries. Utility Model Content

[0003] To address the aforementioned technical problems, a single-sided welding device for dual-cell batteries is provided.

[0004] To achieve the above objectives, this utility model discloses a single-sided welding device for dual-cell batteries, including a welding frame. A pressurizing cylinder assembly is vertically mounted on the upper front of the welding frame. An upper electrode assembly is connected to the bottom output end of the pressurizing cylinder assembly. The upper electrode assembly includes a connecting seat fixedly mounted to the output end of the pressurizing cylinder assembly. Two sets of conductive blocks are connected to the bottom of the connecting seat through an insulating limiting plate. Welding heads are connected to the bottom of each conductive block through the upper electrode seat. A lower electrode assembly is arranged below the welding frame at a position opposite to the upper electrode assembly. A fixing fixture is installed on the top of the lower electrode assembly. A transformer is installed on the side of the welding frame away from the fixing fixture. The positive and negative terminals of the transformer are electrically connected to the two sets of conductive blocks through a soft copper strip arranged inside the welding frame.

[0005] Furthermore, the welding head includes a fixing seat bolted into the upper electrode seat and an embedded electrode embedded in the bottom of the fixing seat, with two sets of welding heads symmetrically installed on opposite sides of the two sets of upper electrode seats.

[0006] Furthermore, a gap is provided between the two sets of conductive blocks, and a first guide groove is provided on the inner side of the conductive block, with the lower electrode seat connected to the slider in the first guide groove at the corresponding position.

[0007] Furthermore, the lower electrode assembly includes an adapter seat installed at the front lower part of the welding frame. A lower electrode seat is fixedly installed on the top of the adapter seat. A second guide groove is opened on the top surface of the lower electrode seat. An insulating limiting plate is connected to the top of the slider in the second guide groove. A support plate is embedded in the center of the surface of the insulating limiting plate. A flange is provided on the surface of the support plate.

[0008] Furthermore, the second guide groove is arranged perpendicularly to the first guide groove.

[0009] Furthermore, the fixing fixture includes a base plate disposed above the tray, a positioning groove corresponding to the tray is disposed below the base plate, a limiting mechanism for limiting the horizontal displacement of the dual-cell battery is disposed at the top of the base plate, and a fixing plate is disposed at the center of the limiting mechanism.

[0010] Furthermore, the fixing plate has at least four sets of rounded rectangular through holes, which expose the electrode plates of the two independent cells of the dual-cell battery to form a welding area.

[0011] Furthermore, a rotating seat is provided on the surface of the fixing fixture outside the limiting mechanism. A pressure rod is movably connected to the rotating seat. A pressure block with a screw is provided in the hollow area in the center of the pressure rod. The screw fixes the pressure block at any position on the pressure rod through two sets of nuts arranged above and below and a U-shaped fixing piece arranged between the nuts and covering the surface of the pressure rod.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model discloses a single-sided welding device for dual-cell batteries. It designs welding heads with positive and negative electrodes on the same side for dual-cell batteries. With the help of a fixing fixture installed at the lower electrode position, it can stably and accurately weld two independent cells. The two sets of welding heads can be adapted to the center distance of the welded product by adjusting the center distance of the upper electrode seat. The lower electrode seat with adjustable front and rear positions can meet the welding requirements of different positions of dual-cell batteries. The upper electrode seat is bolted, making maintenance and replacement more convenient. Attached Figure Description

[0013] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the upper electrode assembly of this utility model.

[0016] Figure 3 This is a schematic diagram of the lower electrode assembly of this utility model.

[0017] Figure 4 This is a schematic diagram of the fixing fixture of this utility model.

[0018] Figure 5 This is a bottom view of the fixing fixture of this utility model.

[0019] In the diagram: 1 is the welding frame; 11 is the soft copper strip; 2 is the pressurizing cylinder assembly; 3 is the upper electrode assembly; 31 is the connecting seat; 32 is the insulating limiting plate; 33 is the conductive block; 331 is the first guide groove; 34 is the upper electrode seat; 35 is the welding head; 351 is the fixing seat; 352 is the embedded electrode; 4 is the lower electrode assembly; 41 is the adapter seat; 42 is the lower electrode seat; 421 is the second guide groove; 43 is the support plate; 5 is the transformer; 6 is the fixing fixture; 61 is the base plate; 611 is the positioning groove; 62 is the limiting mechanism; 63 is the fixing plate; 64 is the rotating seat; 65 is the pressure rod; 66 is the pressure block. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] One embodiment of this utility model is as follows: Figure 1 and Figure 2 As shown, a pressurizing cylinder assembly 2 is vertically mounted on the upper front of the welding frame 1. An upper electrode assembly 3 is connected to the bottom output end of the pressurizing cylinder assembly 2. The upper electrode assembly 3 includes a connecting seat 31 fixedly mounted to the output end of the pressurizing cylinder assembly 2. Two sets of conductive blocks 33 are connected to the bottom of the connecting seat 31 via an insulating limiting plate 32. Welding heads 35 are connected to the bottom of each conductive block 33 via an upper electrode seat 34. The upper electrode seat has a water-cooling pipe structure inside for cooling during the welding process. A lower electrode assembly 4 is located below the welding frame 1, opposite to the upper electrode assembly 3. A fixing fixture 6 is mounted on the top of the lower electrode assembly 4. A welding head 35 is mounted on the side of the welding frame 1 away from the fixing fixture 6. The transformer 5 has its positive and negative terminals electrically connected to two sets of conductive blocks 33 via soft copper strips 11 located inside the welding frame 1. In this embodiment, the left conductive block is connected to the positive terminal, and the right conductive block is connected to the negative terminal. The dual-cell battery in the lower fixing fixture is placed accordingly. Welding heads with the positive and negative terminals on the same side are designed for the dual-cell battery. With the fixing fixture installed at the lower electrode position, the two independent cells are welded stably and accurately. The two sets of welding heads are adapted to the center distance of the welded product by adjusting the center distance of the upper electrode seat. The lower electrode seat with adjustable front and rear positions meets the welding requirements of different positions of the dual-cell battery. The upper electrode seat is bolted, making maintenance and replacement more convenient.

[0022] like Figure 2As shown, the welding head 35 includes a fixing seat 351 bolted into the upper electrode seat 34 and an embedded electrode 352 embedded in and fixed to the bottom of the fixing seat 351. The two sets of welding heads 35 are symmetrically installed on the opposite sides of the two sets of upper electrode seats 34. They are detachable and easy to replace and maintain later. In a preferred embodiment of this application, the fixing seat is usually made of copper alloy, specifically chromium zirconium copper seat, and the embedded electrode is usually made of tungsten alloy or molybdenum alloy.

[0023] A gap is provided between the two sets of conductive blocks 33, and a first guide groove 331 is provided on the inner side of the conductive block 33. The lower electrode seat 34 is connected to the slider in the first guide groove 331 at the corresponding position. The first guide groove is opened horizontally in the left and right direction. The center distance of the upper electrode seat can be adjusted to match the center distance of the welding product, which has strong applicability.

[0024] like Figure 3 As shown, the lower electrode assembly 4 includes an adapter 41 installed at the front and lower part of the welding frame 1. A lower electrode seat 42 is fixedly installed on the top of the adapter 41. A second guide groove 421 is opened on the top surface of the lower electrode seat 42. An insulating limiting plate is connected to the top of the slider in the second guide groove 421. A support plate 43 is embedded in the center of the surface of the insulating limiting plate. A flange is provided on the surface of the support plate 43 for fixing with the fixing fixture, so that the fixing fixture can move synchronously when the support plate moves back and forth along the second guide groove.

[0025] The second guide groove 421 is perpendicular to the first guide groove 331. In this application, the first guide groove is a guide groove arranged in the left-right direction, which is used to adjust the center distance between the two sets of welding heads. The second guide groove is a guide groove arranged in the front-back direction, which is used to adjust the front-back position of the fixing fixture.

[0026] like Figure 4 and Figure 5 As shown, the fixing fixture 6 includes a base plate 61 disposed above the support plate 43. A positioning groove 611 corresponding to the support plate 43 is disposed below the base plate 61. A limiting mechanism 62 for limiting the horizontal displacement of the dual-cell battery is disposed on the top of the base plate 61. A fixing plate 63 is disposed at the center of the limiting mechanism 62. The L-shaped limiting plates on the left and right sides of the limiting mechanism and the fixing plate in the center limit the independent cells in the left and right directions. The inverted U-shaped limiting plates on the front and rear sides limit the independent cells in the front and rear directions. At least four sets of rounded rectangular through holes are opened on the fixing plate 63. The through holes expose the electrode plates of the two independent cells of the dual-cell battery to form a welding area.

[0027] like Figure 4As shown, a rotating seat 64 is provided on the surface of the fixing fixture 6 outside the limiting mechanism 62. A pressure rod 65 is movably connected to the rotating seat 64. A pressure block 66 with a screw is provided in the hollow area in the center of the pressure rod 65. The screw fixes the pressure block 66 at any position on the pressure rod 65 through two sets of nuts set at the top and bottom and a U-shaped fixing piece set between the nuts and covering the surface of the pressure rod 65. The pressure block can be fixed at a suitable position according to different specifications of dual-cell batteries. During the welding process, the pressure rod presses down on the fixing plate to provide downward pressure, ensuring that the fixing plate presses the conductive pieces of the two independent cells firmly, ensuring the stability of the welding process, and preventing deviation caused by shaking, which would lead to poor welding.

[0028] The working principle of this embodiment is as follows: The dual-cell battery is installed in the fixing fixture. After the pressure block is adjusted to the appropriate position and locked, the pressure rod is rotated to bring the pressure block into contact with the surface of the fixing plate. The fixing fixture is then moved to the attached position. Figure 1 After the welding device is powered on, the pressurizing cylinder assembly moves the two sets of welding heads downwards and inserts them into the two sets of rounded rectangular through holes on the side of the fixed plate near the welding frame. The independent battery cell conductive sheets pressed into the through holes are welded. After the welding at this position is completed, the pressurizing cylinder assembly resets. Under the control of the control system, the lower electrode assembly moves toward the side of the welding frame, causing the other set of unwelded rounded rectangular through holes to move below the upper electrode assembly. The above actions are repeated to complete the welding operation of a set of dual-cell batteries.

[0029] Several points need to be clarified: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly, and can refer to mechanical or electrical connections, or internal connections between two components, or direct connections. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships, and the relative positional relationships may change when the absolute position of the described objects changes. Second, in this document, relational terms such as "first" and "second" are only used to distinguish one entity from another entity, and do not necessarily require or imply any such actual relationship or order between these entities.

[0030] The above examples are merely illustrative of this utility model and do not constitute a limitation on the scope of protection of this utility model. All designs that are the same as or similar to this utility model are within the scope of protection of this utility model.

Claims

1. A single-sided welding apparatus for dual-cell batteries, comprising a welding frame (1), characterized in that, A pressurizing cylinder assembly (2) is vertically installed above the front of the welding frame (1). The bottom output end of the pressurizing cylinder assembly (2) is connected to an upper electrode assembly (3). The upper electrode assembly (3) includes a connecting seat (31) fixedly installed at the output end of the pressurizing cylinder assembly (2). The bottom of the connecting seat (31) is connected to two sets of conductive blocks (33) through an insulating limiting plate (32). The bottom of each conductive block (33) is connected to a welding head (35) through an upper electrode seat (34). A lower electrode assembly (4) is provided below the welding frame (1) at a position opposite to the upper electrode assembly (3). A fixing fixture (6) is installed on the top of the lower electrode assembly (4). A transformer (5) is installed on the side of the welding frame (1) away from the fixing fixture (6). The positive and negative terminals of the transformer (5) are electrically connected to the two sets of conductive blocks (33) through a soft copper strip (11) set inside the welding frame (1).

2. A single-sided welding device for a dual-cell battery according to claim 1, characterized in that, The welding head (35) includes a fixing seat (351) bolted in the upper electrode seat (34) and an embedded electrode (352) embedded in the bottom of the fixing seat (351). The two sets of welding heads (35) are symmetrically installed on opposite sides of the two sets of upper electrode seats (34).

3. A single-sided welding device for a dual-cell battery according to claim 1, characterized in that, A gap is provided between the two sets of conductive blocks (33), and a first guide groove (331) is provided on the inner side of the conductive block (33). The electrode seat (34) below is connected to the slider in the first guide groove (331) at the corresponding position.

4. A single-sided welding device for a dual-cell battery according to claim 1, characterized in that, The lower electrode assembly (4) includes an adapter (41) installed at the front and lower part of the welding frame (1). A lower electrode seat (42) is fixedly installed on the top of the adapter (41). A second guide groove (421) is opened on the top surface of the lower electrode seat (42). An insulating limiting plate is connected to the top of the slider in the second guide groove (421). A support plate (43) is embedded in the center of the surface of the insulating limiting plate. A flange is provided on the surface of the support plate (43).

5. A single-sided welding device for a dual-cell battery according to claim 4, characterized in that, The second guide groove (421) is perpendicular to the first guide groove (331).

6. A single-sided welding device for a dual-cell battery according to claim 1, characterized in that, The fixing fixture (6) includes a base plate (61) disposed above the tray (43), a positioning groove (611) corresponding to the tray (43) is disposed below the base plate (61), a limiting mechanism (62) for limiting the horizontal displacement of the dual-core battery is disposed on the top of the base plate (61), and a fixing plate (63) is disposed at the center of the limiting mechanism (62).

7. A single-sided welding apparatus for a dual-cell battery according to claim 6, characterized in that, The fixing plate (63) has at least four sets of rounded rectangular through holes, which expose the electrode plates of the two independent cells of the dual-cell battery to form a welding area.

8. A single-sided welding apparatus for a dual-cell battery according to claim 6, characterized in that, The fixing fixture (6) has a rotating seat (64) on the outside of the limiting mechanism (62). A pressure rod (65) is movably connected to the rotating seat (64). A pressure block (66) with a screw is provided in the hollow area in the center of the pressure rod (65). The screw fixes the pressure block (66) at any position on the pressure rod (65) through two sets of nuts set at the top and bottom and a U-shaped fixing piece set between the nuts and covering the surface of the pressure rod (65).

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