CN202726310U - Ultrasonic metal welding machine for lithium ion power battery pack - Google Patents

Abstract

The utility model discloses an ultrasonic metal welding machine for a lithium-ion power battery pack, which comprises a frame and an ultrasonic welding head, the ultrasonic welding head is fixedly installed on the frame, a working platform is installed on the frame, and a A three-axis driving mechanism that can drive the working platform to move along the X, Y or Z three-axis directions. The action of the three-axis driving mechanism is controlled by a controller installed on the frame. By setting up a working platform that can move along the three axes, the stacked lithium-ion power battery pack to be welded is installed and fixed on the working platform, and the controller sends an instruction to drive the three-axis drive mechanism, so that the lithium-ion power battery pack The parts to be welded will be automatically welded by the ultrasonic welding head in turn. Due to the automatic control and precise positioning of the controller, the accuracy of ultrasonic welding can be improved and the production quality can be guaranteed. The automation of welding reduces the work intensity of operators. The utility model can be efficiently used in ultrasonic welding.

Description

Ultrasonic metal welding machine for lithium ion power battery pack

technical field

The utility model relates to a welding machine, in particular to an ultrasonic metal welding machine for a lithium ion power battery pack.

Background technique

The lithium-ion power battery pack of an electric vehicle is composed of multiple lithium-ion batteries stacked in series or/parallel. A typical battery pack has about 96 lithium-ion batteries, and the series or parallel connection between two of these lithium-ion power batteries generally adopts ultrasonic welding.

Ultrasonic welding is the use of ultrasonic high-frequency vibration waves to be transmitted along the rigid metal material to two objects that need to be welded. Through penetration and fusion, the molecular lattices on the surface of the two weldments enter into each other to recombine and integrate, so that they can be tightly combined as one. Advantages of ultrasonic metal welding: 1) The welding material does not melt, so it does not oxidize, and it is not brittle and maintains the original mechanical and electrical properties of the metal; 2) After welding, it can maintain the electrical conductivity of the original metal, solid and good electrical conductivity, and the resistivity Extremely low, the weakening of the resistance value is negligible; 3) Effective welding can be performed on the surface of the welded metal, that is, the electroplating layer on the tube; 4) The welding time is short, and no auxiliary heating such as flux, gas or solder is required; 5) , Welding without spark or arc phenomenon, environmental protection, safety and low energy consumption.

However, in the welding production of existing lithium-ion power battery packs, a plurality of lithium-ion power batteries that need to be welded are stacked according to production requirements, and metal pole pieces of adjacent lithium-ion power batteries such as nickel sheets or/and After the aluminum sheet is aligned, the stacked lithium-ion power battery pack is manually moved, and the parts to be welded in the lithium-ion power battery pack are sequentially sent to the ultrasonic welding head or the ultrasonic welding head is moved to the part to be welded for welding. Ultrasonic welding. This welding method has the following disadvantages: 1) Low welding efficiency; 2) High skill requirements for operators, so it is difficult to ensure accurate and efficient quality; 3) High work intensity; 4) Inaccurate alignment , low welding precision.

Now there is a need for an automated lithium-ion power battery pack ultrasonic metal welding machine that can achieve high efficiency and high welding precision.

Utility model content

The purpose of the utility model is to provide an ultrasonic metal welding machine for a lithium-ion power battery pack.

The solution of the utility model to solve the technical problem is: a lithium-ion power battery pack ultrasonic metal welding machine, which includes a frame and an ultrasonic welding head, the ultrasonic welding head is fixedly installed on the frame, and the ultrasonic welding head is fixed on the frame. A working platform is installed, and a three-axis driving mechanism that can drive the working platform to move along the X, Y or Z three-axis directions is provided between the working platform and the frame. The action of the three-axis driving mechanism is controlled by the controller installed on the frame. control.

As a further improvement of the above technical solution, the three-axis drive mechanism includes a first slider that moves the working platform along the X-axis direction on its surface, and the first slider is installed on the second slider and can be The second slider moves along the Z-axis direction, and the second slider is installed on the frame and can move along the Y-axis direction on the frame.

As a further improvement of the above technical solution, at least one X-axis slide rail is provided between the working platform and the first slide block, at least one Z-axis slide rail is provided between the first slide block and the second slide block, and the At least one Y-axis slide rail is arranged between the second slide block and the frame. the

As a further improvement of the above technical solution, the second slider is an L-shaped slider composed of mutually perpendicular horizontal sliders and vertical sliders, and a Z-axis slide rail is provided on the inner side of the vertical slider.

As a further improvement of the above technical solution, a lifting screw is connected to the lower end surface of the first slider, and the lifting screw is connected to the output end of the Z-axis drive motor installed on the second slider.

The beneficial effects of the utility model are: the utility model is provided with a working platform that can move along the three-axis direction, so the stacked lithium-ion power battery pack to be welded is installed and fixed on the working platform, and then the controller sends an instruction Drive the three-axis drive mechanism, so that the parts to be welded on the lithium-ion power battery pack will be automatically welded by the ultrasonic welding head in turn. Due to the automatic control and precise positioning of the controller, the accuracy of ultrasonic welding can be improved and the production quality can be guaranteed. The automation reduces the work intensity of the operator.

The utility model can be efficiently used in ultrasonic welding.

Description of drawings

Below in conjunction with accompanying drawing and example the utility model is described further.

Fig. 1 is an isometric view of the utility model;

Fig. 2 is the front view of the utility model;

Fig. 3 is a side view of the utility model.

Detailed ways

The application of the utility model in ultrasonic welding will be described in detail below in conjunction with the accompanying drawings.

Referring to Figures 1 to 3, an ultrasonic metal welding machine for a lithium-ion power battery pack includes a frame 1 and an ultrasonic welding head 3, the ultrasonic welding head 3 is fixedly mounted on the frame 1, and the ultrasonic welding head 3 is further below An ultrasonic generator 9 is installed, a working platform 2 is installed on the frame 1, and a three-axis drive that can drive the working platform 2 to move along the X, Y or Z three-axis directions is provided between the working platform 2 and the frame 1 mechanism, the action of the three-axis drive mechanism is controlled by the controller 6 installed on the frame 1. The controller 6 also controls the operation of the ultrasonic generator 9 .

The three-axis drive mechanism includes a first slider 4 that moves the working platform 2 along the X-axis direction on its surface, and the work of the working platform 2 moving along the X-axis direction is driven by the X-axis installed on the first slider 4 The motor 80 realizes that the first slider 4 is installed on the second slider 5 and can move along the Z-axis direction on the second slider 5, and the movement of the first slider 4 along the Z-axis direction is driven by the Z-axis The motor 8 realizes that the second slide block 5 is installed on the frame 1 and can move along the Y-axis direction on the frame 1, and the movement of the first slide block along the Y-axis direction is controlled by the The Y-axis drive motor 81 is realized. The X-axis drive motor 80, the Y-axis drive motor 81 and the Z-axis drive motor 8 are all electrically connected to the controller 6, and their functions are controlled by the controller 6 to ensure that they can slide or move simultaneously along the X, Y or Z three-axis directions. Slips are performed randomly to meet production needs. At least one X-axis slide rail is provided between the working platform 2 and the first slide block 4. In the present utility model, preferably, the number of X-axis slide rails is 2, which are symmetrically distributed on the first slide block 4, so that At least one Z-axis slide rail is provided between the first slide block 4 and the second slide block 5. In the present utility model, preferably, the number of Z-axis slide rails is 2, symmetrically distributed on the second slide block 5, At least one Y-axis slide rail is provided between the second slide block 5 and the frame 1. In the present utility model, preferably, the number of Y-axis slide rails is 2 and symmetrically distributed on the frame. The slide block 5 is an L-shaped slide block composed of a horizontal slide block and a vertical slide block perpendicular to each other, and a Z-axis slide rail is arranged on the inner side of the vertical slide block. Through the slide rail structure, the three-axis drive mechanism can smoothly transport the working platform 2 to a designated position.

Then, when working, after installing and fixing the stacked lithium-ion power battery pack to be welded on the working platform 2, the controller 6 drives the motor 80 to the X-axis, the Y-axis 81 and the motor 81 respectively according to the set program. The Z-axis drive motor 8 first returns the position of the working platform 2 to zero, and after pressing the running key on the control panel, the X-axis drive motor 80, the Y-axis drive motor 81, and the Z-axis drive motor 8 are sent according to the instructions of the controller 6. Instructing to transport one of the connection points to be welded in the lithium-ion power battery pack to a preset position, and under the control of the controller 6, ultrasonic welding is realized under the action of the ultrasonic generator 9 and the ultrasonic welding head 3. After the point is welded, the position of the X-axis, Y-axis, and Z-axis is adjusted again, and the next welding point of the lithium-ion power battery pack is transported to the ultrasonic welding head 3 for welding, and the cycle is repeated from top to bottom or from bottom to bottom. All the solder joints in the lithium-ion power battery pack are ultrasonically welded upwards. Due to the automatic control and precise positioning of the controller 6, the precision of ultrasonic welding is improved, automation of welding is realized, and the work intensity of operators is reduced.

As a further preferred embodiment, the lower end surface of the first slider 4 is connected with a lifting screw 7 , and the lifting screw 7 is connected with the output end of the Z-axis driving motor 8 installed on the second slider 5 . In the present utility model, the movement of the first slider 4 along the Z-axis direction is mainly realized by the cooperation of the Z-axis driving motor 9 and the lifting screw 7 . the

Of course, the utility model also includes auxiliary devices such as alarm lights familiar to those skilled in the art, which will not be described in detail in the utility model.

The above is a specific description of the preferred embodiments of the present utility model, but the invention is not limited to the described embodiments, those skilled in the art can also make various equivalent modifications without violating the spirit of the present utility model Or replacement, these equivalent modifications or replacements are all included in the scope defined by the claims of the present application.

Claims (5)

1. lithium-ion-power cell group ultrasonic metal bonding machine, it comprises frame (1) and ultrasonic bonding head (3), described ultrasonic bonding head (3) is fixedly mounted on the frame (1), it is characterized in that: workbench (2) is installed on the described frame (1), be provided with between described workbench (2) and frame (1) and can order about workbench (2) along the Three-axis drive mechanism that X, Y or Z three direction of principal axis move, the action of Three-axis drive mechanism is by controller (6) control that is installed on the frame (1).

2. lithium-ion-power cell group ultrasonic metal bonding machine according to claim 1, it is characterized in that: described Three-axis drive mechanism includes the first slide block (4) that workbench (2) is moved along X-direction on its surface, it is upper and can move along Z-direction the second slide block (5) is upper that described the first slide block (4) is installed in the second slide block (5), is installed in frame (1) on described the second slide block (5) upper and can move along Y direction frame (1) is upper.

3. lithium-ion-power cell group ultrasonic metal bonding machine according to claim 2, it is characterized in that: be provided with at least one X-axis slide rail between described workbench (2) and the first slide block (4), be provided with at least one Z axis slide rail between described the first slide block (4) and the second slide block (5), be provided with at least one Y-axis slide rail between described the second slide block (5) and frame (1).

4. lithium-ion-power cell group ultrasonic metal bonding machine according to claim 3, it is characterized in that: the L shaped slide block of described the second slide block (5) for being made of orthogonal cross slider and perpendicular slide block is provided with the Z axis slide rail on the medial surface of described perpendicular slide block.

5. according to claim 2 or 3 described lithium-ion-power cell group ultrasonic metal bonding machines, it is characterized in that: the lower surface of described the first slide block (4) is connected with and promotes leading screw (7), and described lifting leading screw (7) connects with the output of Z axis drive motors (8) on being installed in the second slide block (5).

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