CN205200849U - Power battery module welding set - Google Patents

Abstract

The utility model relates to the technical field of battery production equipment, in particular to a power battery module welding device, which includes a workbench, a Y-axis moving mechanism arranged longitudinally on the workbench, an X-axis moving mechanism arranged transversely above the workbench, an X The Z-axis moving mechanism set on the axis moving mechanism, the welding mechanism set on the Z-axis moving mechanism, the stepping motor and the welding power supply, the utility model provides three-axis movement, namely X, Y and Z three free The Y-axis is installed on the workbench and can move back and forth, the X-axis is installed on the beam and can move left and right, the Z-axis is installed on the X-axis slider and can move up and down, and the pallet device is installed on the Y-axis guide rail. While carrying and positioning the battery module, it drives it to move in the Y-axis direction. The welding head is installed on the Z-axis slider. While providing welding pressure, the welding head can move in the Z-axis direction to achieve spot welding. The utility model has high degree of automation and precise positioning, can effectively improve welding efficiency, ensure stable welding quality and good consistency, improve production efficiency, and reduce production cost.

Description

A power battery module welding device

technical field

The utility model relates to the technical field of battery production equipment, in particular to a power battery module welding device.

Background technique

With the upsurge of new energy vehicles in recent years, pure electric vehicles have gradually entered the vision of ordinary consumers, but it is not a simple matter for pure electric vehicles to be recognized by consumers. Due to the limitations of short mileage, difficulty in charging, and long charging time, it is not currently the best choice for mass consumers. In order to enable pure electric vehicles to enter thousands of households, these problems that limit their development must be solved, the first of which is the mileage issue, and the most important means to increase the mileage is to increase the energy of the power battery.

At present, there is no breakthrough in increasing the capacity of power battery cells in a short period of time. It can only be improved by connecting more single cells in series and parallel, that is, connecting more single cells in parallel and connecting more battery modules in series. Power battery energy. For the use of 18650 single cells, dozens of hundreds of single cells are connected in parallel to form a module. Generally, the two poles of the single cells are welded to a guide piece, and the material of the guide piece is generally nickel strip. Or nickel-plated conductive materials, it will be a very heavy workload to weld the two poles of each single battery cell to the guide sheet respectively. At the same time, at present, whether it is resistance welding or laser welding, the general welding head can only Moving in the Z-axis direction, only one part can be welded without manually adjusting the battery position. This method cannot meet the requirements of high-efficiency production and lower production costs, and the consistency of welding quality cannot be guaranteed.

Utility model content

The purpose of the utility model is to solve the above problems, and provide a fully automatic power battery module welding device capable of moving in three directions of X/Y/Z.

In order to solve the above problems, the technical solution adopted by the utility model is:

A power battery module welding device, comprising a workbench, a Y-axis moving mechanism arranged longitudinally on the workbench, an X-axis moving mechanism arranged horizontally above the workbench, a Z-axis moving mechanism arranged on the X-axis moving mechanism, and a The welding mechanism, stepping motor and welding power supply on the Z-axis moving mechanism, the Y-axis moving mechanism includes a Y-axis guide rail fixed longitudinally on the workbench and a pallet that is slidably mounted on the Y-axis guide rail. The X-axis moving mechanism includes two vertical columns fixed vertically and symmetrically on the workbench on both sides of the end of the Y-axis guide rail, a beam horizontally arranged between the tops of the two columns, an X-axis guide rail horizontally installed on the beam, and a matching sliding installation The X-axis slider on the X-axis guide rail, the Z-axis moving mechanism includes a Z-axis guide rail that is fixedly connected vertically downward on the X-axis slider, and a Z-axis slider that is slidably mounted on the Z-axis guide rail. The welding mechanism includes a connecting plate fixedly installed on the Z-axis slider, a welding head fixedly installed on the connecting plate, and two electrodes symmetrically fixed on both sides of the welding head through electrode clamping blocks, and both electrode clamping blocks are connected The wires and the other ends of the two wires are respectively connected to the two L-shaped copper bars symmetrically fixed on both sides of the beam. The upper ends of the two L-shaped copper bars are respectively connected to the positive and negative poles of the welding power supply through wires. The stepper motor electronically controls the movement of the pallet, X-axis slider and Z-axis slider.

The welding head of the welding mechanism is equipped with two pressure adjustment knobs for adjusting the pressing pressure of the two electrodes, and the welding head is connected with the electrode clamping block through the electrode clamping block support shaft.

The pallet of the Y-axis moving mechanism is provided with multiple rows of positioning holes and fixedly installed with 4 positioning bars for power battery positioning. The positioning bars are provided with oblong holes matching the positioning holes. The 4 positioning strips are fixed around the pallet by bolts.

A wire groove is fixedly connected to the X-axis slider.

Two rows of positioning holes 1 are arranged symmetrically on both sides of the Z-axis slider, and two corresponding positioning holes 2 are arranged on the connecting plate.

The gain effect of the present utility model is:

The utility model comprises a working table, a Y-axis moving mechanism arranged horizontally on the working table, an X-axis moving mechanism arranged longitudinally above the working table, a Z-axis moving mechanism arranged on the X-axis moving mechanism, and a Z-axis moving mechanism arranged on the Z-axis moving mechanism. The welding mechanism provides movement in three axes, which are X, Y and Z degrees of freedom. The Y axis is installed on the workbench and can move back and forth, the X axis is installed on the beam and can move left and right, and the Z axis It is installed on the X-axis slider and can move up and down. The tray device is installed on the Y-axis guide rail. While carrying and positioning the battery module, it drives it to move in the Y-axis direction. The welding head is installed on the Z-axis slider. While providing welding pressure, the welding head can move in the Z-axis direction to achieve spot welding. The utility model has high degree of automation and precise positioning, can effectively improve welding efficiency, ensure stable welding quality and good consistency, improve production efficiency, and reduce production cost.

Description of drawings

Fig. 1 is a structural schematic diagram of a power battery module welding device of the present invention.

Fig. 2 is a front view of a power battery module welding device of the present invention.

Fig. 3 is a structural schematic diagram of a tray of a power battery module welding device of the present invention.

FIG. 4 is a schematic diagram of a power battery module.

FIG. 5 is a schematic diagram of the position of the welding points of the power battery module.

detailed description

Below in conjunction with accompanying drawing, specific embodiment of the present utility model is described in detail.

See Figure 1, Figure 2, Figure 3, Figure 4 and Figure 5, the serial numbers in the figure: 1 is the workbench, 2 is the Y-axis guide rail, 3 is the tray, 4 is the column, 5 is the beam, 6 is the X-axis guide rail, 7 X-axis slider, 8 for Z-axis guide rail, 9 for Z-axis slider, 10 for connecting plate, 11 for welding head, 12 for electrode, 13 for electrode clip, 14 for positioning hole 2, 15 for wire, 16 for L-shaped copper bar, 17 is the pressure adjustment knob, 18 is the electrode clamp support shaft, 19 is the positioning hole, 20 is the positioning bar, 21 is the oblong hole, 22 is the wire groove, 23 is the positioning hole 1 and 24 is the position 1, 25 is position two, 26 is position three, 27 is point a, 28 is point b, 29 is point c and 30 is point d.

The utility model relates to a power battery module welding device, comprising a workbench 1, a Y-axis moving mechanism arranged longitudinally on the workbench, an X-axis moving mechanism arranged horizontally above the workbench, and a Z-axis arranged on the X-axis moving mechanism. A moving mechanism, a welding mechanism arranged on the Z-axis moving mechanism, a stepping motor and a welding power supply, the Y-axis moving mechanism includes a Y-axis guide rail 2 longitudinally fixed on the workbench and a matching slidably mounted Y-axis guide rail The pallet 3, the X-axis moving mechanism includes two uprights 4 arranged vertically and symmetrically on both sides of the end of the Y-axis guide rail, a crossbeam 5 arranged transversely between the tops of the two uprights, an X-axis guiderail 6 laterally installed on the crossbeam, As well as the X-axis slider 7 that is installed on the X-axis guide rail with a matching sliding arrangement, the Z-axis moving mechanism includes a Z-axis guide rail 8 that is fixedly connected vertically downward on the X-axis slider 7 and a matching sliding arrangement that is installed on the Z-axis guide rail. The Z-axis slider 9, the welding mechanism includes a connecting plate 10 fixedly installed on the Z-axis slider 9, a welding head 11 fixedly installed on the connecting plate, and two electrodes symmetrically fixed by two electrode clamps 13 12. The wires 15 connected to the two electrode holders 13 and the other ends of the two wires 15 are respectively connected to the two L-shaped copper bars 16 symmetrically fixed on both sides of the beam 5. The two L-shaped copper bars 16 are respectively connected to The positive and negative poles of the welding power supply are connected, the electric control tray of the stepping motor, the X-axis slider and the Z-axis slider move, and the welding head 11 of the welding mechanism is equipped with a pressure sensor for adjusting the two electrodes 12. The two pressure adjustment knobs 17 of the tight pressure, the welding machine head 11 is connected with the electrode clamp block 13 through the electrode clamp block support shaft 18 . The tray 3 of the Y-axis moving mechanism is provided with multiple rows of positioning holes 19 and fixedly installed with 4 positioning bars 20 for positioning the power battery. holes 21, the four positioning bars 20 are fixed and installed around the pallet by bolts. A wire slot 22 is fixedly connected to the X-axis slider 7 . Two rows of positioning holes 1 23 are arranged symmetrically on both sides of the Z-axis slider 9 , and two rows of positioning holes 2 14 are correspondingly arranged on the connecting plate 10 .

The utility model connects the oblong holes 21 on the positioning bar 20 with different positioning holes 19 on the tray 3 through bolts, so as to achieve the purpose of positioning and fixing the power battery. The welding head 11 is connected with the Z-axis slider 9 through the connecting plate 10, and the Z-axis slider 9 has a positioning hole 1 23 corresponding to the positioning hole 2 14 on both sides of the connecting plate 10, and the welding can be adjusted by adjusting the position of the positioning bolt. The height of the machine head 11 on the Z-axis, the left and right pressure adjustment knobs 17 can respectively adjust the pressing pressure of the left and right electrodes 12 when welding the nickel sheet and the positive end (negative end) of the power battery. This pressure is determined by the welding head. 11 internal spring mechanism provided. Two mutually independent electrode clamps 13 are used to clamp and fix two electrodes 12. The electrode clamps 13 are connected to the spring mechanism inside the welding head 11 through the electrode clamp support shaft 18, which provides the flexibility of the welding part when the electrodes fall. touch. The electrode holder 13 is made of iron or other materials with good conductivity. Two L-shaped copper bars 16 are symmetrically fixed on both sides of the beam 5 , and the two copper bars 16 are insulated from the beam 5 . The lower sides of the two copper bars 16 are respectively connected to the left and right electrode holders 13 with wires 15 capable of carrying welding current. The upper sides of the two copper bars 12 are respectively connected to the positive and negative poles of the welding power supply with wires capable of carrying welding current.

First press the power switch to turn on the machine, then press the reset button to reset each state of the machine, the Y-axis moving mechanism, X-axis moving mechanism and Z-axis moving mechanism all return to the reference point. For the power battery module, adjust the positioning bar 20 to clamp and position the power battery module. By moving the Y-axis moving mechanism, X-axis moving mechanism and Z-axis moving mechanism, the lower ends of the two electrodes 12 are placed at point a 27 and point b 28 at position one 24, just pressing the nickel sheet and the positive (negative) end of the power battery , record the coordinates of the three-axis direction at this time, and then move the two electrodes 12 to point c 29 and point d 30 of position one 24, and record the coordinates of the three-axis direction at this time. In the same way, the corresponding three-axis coordinates of position two 25 and position three 26 are recorded. According to the coordinates of these three positions, the coordinates of the welding parts of the entire power battery module can be calculated, and then these coordinate parameters are input into the machine storage device through the peripheral device for storage. Press the reset button again to reset each state of the machine, load the previously stored welding position coordinate parameters through the peripheral device, press the start button, the moving mechanism starts to run, and the electrode first reaches point a 27 and point b 28 of the designated position 24, The spot welder starts to work for welding operation. After the welding is completed, the electrode leaves point a 27 and point b 28, and then runs to point c 29 and point d 30 for welding operation. In this way, the welding operation is automatically performed according to the previously edited trajectory until all After the welding is completed, the electrode returns to the specified waiting position. Adjust the top and bottom of the power battery module, and weld the other electrode of the power battery module in the same operation.

The basic principles, main features and advantages of the present utility model have been shown and described above. Those skilled in the industry should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions describe only the principle of the utility model. There will be various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The protection scope required by the utility model is defined by the appended claims and their equivalents.

Claims (5)

1. A power battery module welding device, comprising a workbench, a Y-axis moving mechanism arranged longitudinally on the workbench, an X-axis moving mechanism arranged horizontally above the workbench, and a Z-axis moving mechanism arranged on the X-axis moving mechanism . A welding mechanism, a stepper motor and a welding power source arranged on the Z-axis moving mechanism, characterized in that: the Y-axis moving mechanism includes a Y-axis guide rail fixed longitudinally on the workbench and a matching slide mounted on the Y-axis guide rail The pallet, the X-axis moving mechanism includes two columns fixed vertically and symmetrically on the workbench on both sides of the end of the Y-axis guide rail, a crossbeam horizontally arranged between the tops of the two columns, and an X-axis horizontally installed on the crossbeam. The guide rail and the X-axis slider matched and slidably installed on the X-axis guide rail, the Z-axis moving mechanism includes the Z-axis guide rail fixed and connected vertically downward on the X-axis slider, and the Z-axis matched and slidably installed on the Z-axis guide rail Slider, the welding mechanism includes a connecting plate fixedly installed on the Z-axis slider, a welding head fixedly installed on the connecting plate, and two electrodes symmetrically fixed on both sides of the welding head through electrode clamps, two The wires connected to the electrode clamp block and the other ends of the two wires are respectively connected to the two L-shaped copper bars symmetrically fixed on both sides of the X-axis slider. The upper ends of the two L-shaped copper bars are respectively connected by wires and The positive and negative poles of the power supply are connected, and the stepper motor electrically controls the pallet, the X-axis slider and the Z-axis slider to move. 2. A power battery module welding device according to claim 1, characterized in that two pressure adjustment knobs for adjusting the pressing pressure of the two electrodes are installed on the welding head of the welding mechanism. The welding head described above is connected with the electrode clamping block through the electrode clamping block support shaft. 3. A power battery module welding device according to claim 1, characterized in that: the tray of the Y-axis moving mechanism is provided with multiple rows of positioning holes and fixedly installed with 4 positioning holes for the power battery. Positioning strips, the positioning strips are provided with oblong holes matching the positioning holes, and the four positioning strips are fixed and installed around the pallet by bolts. 4. A power battery module welding device according to claim 1, characterized in that: said X-axis slider is fixedly connected with a wire slot. 5. A power battery module welding device according to claim 1, characterized in that two rows of positioning holes are arranged symmetrically on both sides of the Z-axis slider, and two rows of positioning holes are arranged on the connecting plate. A corresponding positioning hole two.