Tool trolley for battery pack automatic assembly production line

Abstract

The utility model discloses a tooling trolley for a battery pack automatic assembly production line, which relates to the technical field of battery pack assembly and comprises a frame, a battery tray capable of being separated from the frame is arranged on the top surface of the frame, two trolley frame fine positioning pins are fixedly connected to a pair of diagonal positions of the top surface of the frame, and the two trolley frame fine positioning pins are arranged on the top surface of the frame. The other pair of diagonal corners of the frame is fixedly connected with tray supporting plates used for supporting the battery tray, and tray installation positioning holes are formed in the diagonal corners, corresponding to the frame, of the bottom face of the battery tray. According to the utility model, the frame is separated from the battery tray, the tray lifting support plate is lifted by the lifting head of the welding station, and the fine positioning pin of the lifting head is lifted in the tray lifting fine positioning hole, so that the tray is directly lifted to an accurate position for welding, and longitudinal errors caused by different tooling vehicles are avoided.

Description

Technical Field

[0001] This utility model relates to the field of battery pack assembly technology, and in particular to a tooling trolley for automated battery pack assembly production lines. Background Technology

[0002] With the development and evolution of new energy power batteries in recent years, the traditional method of placing the welded modules into the battery pack has been largely transformed into stacking the cells into the battery pack and then welding them together as a whole.

[0003] Because the automatic welding station has high requirements for the positional accuracy of the battery pack, especially the longitudinal height difference, if the height difference exceeds the maximum allowable amount of the equipment, over-welding or incomplete welding is likely to occur, which will lead to serious product quality problems and affect the stable production of the mass production line.

[0004] The existing tooling trolleys directly support the bottom of the battery pack, and then the welding station directly welds the battery pack into the car chassis. Because the bottom guard plate of the battery pack lacks precision and is prone to deformation, the height difference can reach ±3mm, making the overall height accuracy of the battery pack uncontrollable. At the same time, a mass production line has about 60 battery pack positioning trolleys. Because the longitudinal height consistency from the wheels to the support platform of the tooling trolley cannot be fixed, especially the casters and profile frame, it cannot meet the ±1mm requirement of the battery pack. Therefore, external force is still required for positioning and installation of the battery pack, which is time-consuming and labor-intensive. Utility Model Content

[0005] The purpose of this utility model is to provide a tooling trolley for an automated battery pack assembly line, in order to solve the problem mentioned in the background art that the frame and battery pack cannot be separated when installing the battery pack, resulting in the inability to accurately weld the battery pack to the car chassis longitudinally.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a tooling trolley for an automated battery pack assembly line, comprising a frame, a battery tray detachable from the frame on the top surface of the frame, two trolley frame precision positioning pins fixedly connected at one pair of diagonal points on the top surface of the frame, and a tray support plate for supporting the battery tray fixedly connected at the other pair of diagonal points of the frame, a tray mounting positioning hole provided at the diagonal point corresponding to the frame on the bottom surface of the battery tray, and a tray lifting precision positioning hole and a tray lifting support plate adapted to the lifting head of the battery welding station on the bottom surface of the battery tray.

[0007] Preferably, the top surface of the battery tray is fixedly connected with four battery pack placement guide pins.

[0008] Preferably, two battery pack positioning support plates are fixedly connected to the side of the top surface of the battery tray, and the top surface of each of the two battery pack positioning support plates is fixedly connected to a battery pack precision positioning pin.

[0009] Preferably, the top surfaces of both battery pack positioning support plates are fixedly connected to battery pack support columns.

[0010] Preferably, a polyurethane pad is fixedly connected to the top surface of the battery tray, and the distance between the polyurethane pad and the bottom surface of the battery pack is reserved at 2mm.

[0011] Preferably, a guide vehicle connector is fixedly connected to one side of the vehicle frame.

[0012] Preferably, the top surface of the battery tray is also provided with multiple equally spaced threaded holes.

[0013] The technical effects and advantages of this utility model are as follows: By separating the vehicle frame from the battery tray, the lifting head of the welding station lifts the tray and the support plate, and the precision positioning pin of the lifting head lifts the tray into the precision positioning hole, so that the tray is directly lifted to the precise position for welding, avoiding longitudinal errors caused by different tooling vehicles. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2 This is a schematic diagram of the battery tray structure of this utility model.

[0016] Figure 3 This is a schematic diagram of the tooling trolley frame structure of this utility model.

[0017] In the diagram: 1. Frame; 2. Battery tray; 3. Tray mounting positioning hole; 4. Battery pack placement guide pin; 5. Battery pack positioning support plate; 6. Battery pack support column; 7. Battery pack precision positioning pin; 8. Guide trolley connector; 9. Polyurethane pad; 10. Tray lifting precision positioning hole; 11. Tray support plate; 12. Trolley frame precision positioning pin; 13. Tray lifting support plate. Detailed Implementation

[0018] 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.

[0019] This utility model provides, for example Figure 1-3The tooling trolley shown is used in an automated assembly line for battery packs. It includes a frame 1. The top surface of the frame 1 is provided with a battery tray 2 that can be detached from the frame 1. Two trolley frame precision positioning pins 13 are fixedly connected to one pair of diagonal corners of the top surface of the frame 1. The other pair of diagonal corners of the frame 1 are fixedly connected with tray support plates 12 for supporting the battery tray 2. The bottom surface of the battery tray 2 is provided with tray mounting positioning holes 3 at the diagonal corners corresponding to the frame 1. The bottom surface of the battery tray 2 is provided with tray lifting precision positioning holes 10 and tray lifting support plates 14 that are adapted to the lifting head of the battery welding station.

[0020] In use, the lifting head of the battery welding station first lifts the tray and the support plate 14, and the positioning pin of the lifting head is inserted into the precise positioning hole 10 of the tray lifting, so that the lifting head is fixed to the battery tray 2. Then it is lifted to the bottom of the car for welding, which avoids the influence of the vehicle frame 1 on the welding height of the battery pack, making the connection between the battery pack and the car chassis more precise and avoiding over-welding or incomplete welding.

[0021] like Figure 1 As shown, four battery pack placement guide pins 4 are fixedly connected to the top surface of the battery tray 2, which facilitates the precise placement of the battery packs into the battery tray 2 during placement.

[0022] like Figure 1 As shown, two battery pack positioning support plates 5 are fixedly connected to the side of the top surface of the battery tray 2. The top surface of each battery pack positioning support plate 5 is fixedly connected to a battery pack precision positioning pin 6. The battery pack precision positioning pin 6 further ensures the precise installation of the battery pack inside the battery pack, making it easier to install the battery pack to the vehicle chassis.

[0023] like Figure 1 As shown, battery pack support columns 51 are fixedly connected to the top surfaces of both battery pack positioning support plates 5.

[0024] like Figure 1 As shown, a polyurethane pad 8 is fixedly connected to the top surface of the battery tray 2, and a 2mm gap is reserved between the polyurethane pad 8 and the bottom surface of the battery pack. The polyurethane pad 8 is set to prevent the battery from touching the frame 1 when it deforms and scratching the battery pack. At the same time, a 2mm gap is reserved between the bottom surface of the battery pack and the polyurethane pad 8 to avoid the polyurethane pad 8 from squeezing and deforming the battery pack.

[0025] like Figure 1 As shown, a guide car connector 7 is fixedly connected to one side of the frame 1. By connecting the guide car to the guide car connector 7, it is easy for the guide car to pull the tooling trolley to the welding station position.

[0026] like Figure 1As shown, the top surface of the battery tray 2 is also reserved with multiple equally spaced threaded holes, so that new products can be made compatible by replacing the corresponding positioning pins and support components for different products.

[0027] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tooling trolley for an automated battery pack assembly line, comprising a frame (1), characterized in that: The top surface of the frame (1) is provided with a battery tray (2) that can be detached from the frame (1). Two frame precision positioning pins (13) are fixedly connected to one pair of diagonal corners of the top surface of the frame (1). A tray support plate (12) for supporting the battery tray (2) is fixedly connected to the other pair of diagonal corners of the frame (1). The bottom surface of the battery tray (2) is provided with a tray mounting positioning hole (3) at the diagonal corner corresponding to the frame (1). The bottom surface of the battery tray (2) is provided with a tray lifting precision positioning hole (10) and a tray lifting support plate (14) that are adapted to the battery welding station lifting head.

2. The tooling trolley for an automated battery pack assembly line according to claim 1, characterized in that: The top surface of the battery tray (2) is fixedly connected with four battery pack placement guide pins (4).

3. A tooling trolley for an automated battery pack assembly line according to claim 1, characterized in that: Two battery pack positioning support plates (5) are fixedly connected to the side of the top surface of the battery tray (2), and battery pack precision positioning pins (6) are fixedly connected to the top surface of the two battery pack positioning support plates (5).

4. A tooling trolley for an automated battery pack assembly line according to claim 3, characterized in that: The top surfaces of the two battery pack positioning support plates (5) are fixedly connected to battery pack support columns (51).

5. A tooling trolley for an automated battery pack assembly line according to claim 1, characterized in that: The top surface of the battery tray (2) is fixedly connected to a polyurethane pad (8), and the distance between the polyurethane pad (8) and the bottom surface of the battery pack is reserved by 2mm.

6. A tooling trolley for an automated battery pack assembly line according to claim 1, characterized in that: One side of the frame (1) is fixedly connected to a guide vehicle connector (7).

7. A tooling trolley for an automated battery pack assembly line according to claim 1, characterized in that: The top surface of the battery tray (2) is also reserved with multiple equally spaced threaded holes.

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