Aluminum shell battery pack general assembly line system

Abstract

The utility model provides an aluminum shell battery pack general assembly line system, which relates to the technical field of battery production, and comprises a speed chain and a module section arranged on the side surface of the speed chain, and the speed chain penetrates through the whole module section. The module section comprises a welding spot detection work station, a cover plate assembly work station, a transfer mechanism, a reserved work station, an air tightness test station and an EOL insulation voltage-withstanding charge-discharge tester which are sequentially installed from left to right. According to the aluminum shell battery pack general assembly line system, aluminum shell cover plates of battery modules can be installed through the cover plate assembling work station, it can be ensured that the aluminum shell cover plates are accurately aligned, the adaptation problem caused by aluminum shell errors is reduced, the fixing accuracy is improved, it is ensured that the appearance and the structure of a battery pack are stable, and the problem that wrapping is not precise is solved; and meanwhile, the cover plate assembly work station is convenient for quickly adjusting and replacing cover plates with different specifications, so that the time and money investment for re-customizing a PACK assembly line are reduced.

Description

Technical Field

[0001] The utility model relates to an assembly line, in particular to an aluminum shell battery pack assembly line system, belonging to the technical field of battery production. Background Art

[0002] Common battery packaging and assembly lines include crawler conveyor assembly lines, circular cart conveyor assembly lines, and AGV (Automated Guided Vehicle) conveyor assembly lines. Battery packs are typically secured using PVC tubing heat shrinkable to secure the packs. This has a low fit rate within the packing line, resulting in assembly difficulties often affected by variations in the battery aluminum casing. Furthermore, the packaging process is imprecise. Furthermore, customizing the packing line to change specifications requires significant time and investment, and is complex to debug.

[0003] Therefore, an aluminum shell battery pack assembly line system is proposed here. Summary of the Invention

[0004] The utility model provides an aluminum shell battery pack assembly line system to solve the problem in the prior art that the assembly environment is often affected by the error of the battery aluminum shell and is difficult to assemble.

[0005] The utility model is realized by the following technical solutions: an aluminum shell battery pack assembly line system, including a double-speed chain, and also including a module section installed on the side of the double-speed chain, the double-speed chain runs through the entire module section, and the module section includes a welding point detection workstation, a cover assembly workstation, a transfer mechanism, a reserved station, an airtightness test station and an EOL insulation withstand voltage charge and discharge tester installed in sequence from left to right;

[0006] The solder joint inspection workstation is used to inspect the solder joints of the battery modules. OK cells flow into the next station, while NG cells are transferred to the NG buffer station by the transfer mechanism.

[0007] The cover plate assembly workstation is used to install the cover plates on the battery modules after welding the aluminum plates and the collection line;

[0008] The airtightness test station includes a gas booster pump, a helium leak detector and a data recorder. The airtightness test station is used to test the sealing of the battery pack after the cover is assembled and to sort out OK cells and NG cells;

[0009] The EOL insulation withstand voltage charge and discharge tester is used to test the total module voltage, module internal resistance, insulation resistance between the total positive terminal and the end plate, and withstand voltage between the total positive terminal and the end plate of the battery module.

[0010] The surface of the double-speed chain is loaded with a tooling plate.

[0011] Furthermore, the double-speed chain is used to transport tooling plates, and corresponding blocking or positioning mechanisms are set at each workstation to ensure that the tooling plates can be accurately positioned at each workstation. The double-speed chain is prepared by welding a square tube with a length, width and height of 60mm*40mm*3mm and then painting it.

[0012] Furthermore, the transfer mechanism is movably arranged on the double-speed chain and corresponds to the cover assembly workstation, reserved workstation, air tightness test station and EOL insulation withstand voltage charge and discharge tester respectively. The transfer mechanism is used to transfer the battery cells on the tooling board to the corresponding workstation; and / or, transfer the battery cells on the tooling board to the double-speed chain.

[0013] Furthermore, after the EOL insulation withstand voltage charge and discharge tester test is completed, the materials are manually unloaded and transported, and after the upper battery cells are taken away, the empty tooling plate descends to the lower layer and flows to the upper material elevator.

[0014] Furthermore, the total voltage of the module is the voltage between the total positive and total negative of the measurement module, specifically 5V≤U≤300V, the internal resistance of the module is the AC internal resistance between the total positive and total negative of the measurement module, the insulation resistance between the total positive of the module and the end plate is the insulation resistance R between the total positive of the test module and the end plate, specifically R≥550MΩ, and the withstand voltage between the total positive of the module and the end plate is the withstand voltage performance between the total positive of the test module and the end plate, specifically I≤1mA.

[0015] Furthermore, the tooling plate is a 20mm thick aluminum plate, and a 5mm thick fiberglass plate is fixed on the surface as an insulating plate. The maximum load of the double-speed chain reaches 500KG / meter, and the tooling plate size of the module section is 1150mm long*600mm wide*20mm thick.

[0016] Furthermore, the module section is also divided into industrial and commercial storage assembly line and household storage assembly line. The tooling plate size of the household storage assembly line is 800mm long * 700mm wide * 20mm thick, and the tooling plate size of the industrial and commercial storage assembly line is 1300mm long * 900mm wide * 25mm thick.

[0017] The utility model provides an aluminum shell battery pack assembly line system, which has the following beneficial effects:

[0018] The aluminum shell battery pack assembly line system can install the aluminum shell cover of the battery module through the cover assembly workstation, which can ensure the accurate alignment of the aluminum shell cover, reduce the adaptation problems caused by aluminum shell errors, improve the accuracy of fixation, ensure the stability of the battery pack's shape and structure, and avoid the problem of imprecise wrapping. At the same time, the cover assembly workstation facilitates the rapid adjustment and replacement of covers of different specifications, reducing the time and money investment in re-customizing the PACK line.

[0019] The aluminum shell battery pack assembly line system undergoes multiple tests at the solder joint detection workstation, air tightness test station and EOL insulation withstand voltage charge and discharge tester, which can ensure that the first-time yield of the entire line products is not less than 98.5% and the final yield is not less than 99.5%. It effectively reduces rework and repair caused by quality problems, thereby reducing overall production costs and shortening the processing time caused by defects, which helps to improve overall production efficiency.

[0020] The aluminum shell battery pack assembly line system adjusts the corresponding tooling plates under different sections, which can be optimized according to the specific needs of each section, ensuring the best adaptability and support during the assembly and processing process. It also selects appropriate thickness and materials according to different loads and usage environments to ensure the strength and durability of the tooling plates and improve safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the aluminum shell battery pack assembly line structure provided by the utility model.

[0022] Description of Reference Numerals

[0023] 1. Double-speed chain; 2. Solder point inspection workstation; 3. Cover assembly workstation; 4. Transfer mechanism; 5. Reserved workstation; 6. Air tightness test station; 7. EOL insulation withstand voltage charge and discharge tester. DETAILED DESCRIPTION

[0024] The following will be combined with the accompanying drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0025] See also Figure 1The embodiment of the utility model provides an aluminum shell battery pack assembly line system, including a speed chain 1, and also includes a module section installed on the side of the speed chain 1. The speed chain 1 runs through the entire module section. The module section includes a welding point detection workstation 2, a cover assembly workstation 3, a transfer mechanism 4, a reserved workstation 5, an airtightness test station 6 and an EOL insulation withstand voltage charge and discharge tester 7 installed from left to right; the speed chain 1 is used to transport tooling plates, and a corresponding blocking or positioning mechanism is set at each workstation to confirm that the tooling plates can be accurately positioned at each workstation. The speed chain 1 is welded with a square tube with a length, width and height of 60mm*40mm*3mm and then painted. Preparation; After the EOL insulation withstand voltage charge and discharge tester 7 is completed, the materials are manually unloaded and transported, and after the upper battery cells are taken away, the empty tooling plate descends to the lower layer and flows to the upper material elevator; the aluminum shell battery pack assembly line system can install the aluminum shell cover of the battery module through the cover assembly workstation 3, which can ensure the accurate alignment of the aluminum shell cover, reduce the adaptation problems caused by the aluminum shell error, improve the accuracy of fixation, ensure the stability of the shape and structure of the battery pack, and avoid the problem of imprecise wrapping. At the same time, the cover assembly workstation 3 facilitates the rapid adjustment and replacement of covers of different specifications, reducing the time and money investment in re-customizing the PACK line.

[0026] The solder joint inspection workstation 2 is used to inspect the solder joints of the battery module. OK cells flow to the next workstation, and NG cells are transferred to the NG buffer workstation by the transfer mechanism 4; the cover assembly workstation 3 is used to install the cover on the battery module after welding the aluminum plate and the collection line; the airtightness test station 6 includes a gas booster pump, a helium leak detector and a data recorder. The airtightness test station 6 is used to detect the sealing of the battery pack after assembling the cover, and sort out OK cells and NG cells; through multiple inspections of the solder joint inspection workstation 2, the airtightness test station 6 and the EOL insulation withstand voltage charge and discharge tester 7, the first-time yield of the entire line product can be no less than 98.5%, and the final yield can be no less than 99.5%, which effectively reduces rework and repair caused by quality problems, thereby reducing the overall production cost, reducing the processing time caused by defects, and helping to improve the overall production efficiency.

[0027] The transfer mechanism 4 is movably arranged on the double-speed chain 1 and corresponds to the cover assembly workstation 3, the reserved workstation 5, the airtightness test station 6 and the EOL insulation withstand voltage charge and discharge tester 7 respectively. The transfer mechanism 4 is used to transfer the battery cells on the tooling board to the corresponding workstation; and / or, transfer the battery cells on the tooling board to the double-speed chain 1.

[0028] The EOL insulation withstand voltage charge and discharge tester 7 is used to test the total module voltage, module internal resistance, insulation resistance between the total positive of the module and the end plate, and withstand voltage between the total positive of the module and the end plate of the battery module; the total module voltage is the voltage between the total positive and total negative of the module, specifically 5V≤U≤300V, the module internal resistance is the AC internal resistance between the total positive and total negative of the module, the insulation resistance between the total positive of the module and the end plate is the insulation resistance R between the total positive of the module and the end plate, specifically R≥550MΩ, the withstand voltage between the total positive of the module and the end plate is the withstand voltage performance between the total positive of the module and the end plate, specifically I≤1mA.

[0029] The surface of the speed chain 1 is loaded with tooling plates; the tooling plates are 20mm thick aluminum plates, and a 5mm thick fiberglass plate is fixed on the surface as an insulating plate. The maximum load of the speed chain 1 reaches 500KG / meter, and the tooling plate size of the module section is 1150mm long*600mm wide*20mm thick; the module section is also divided into industrial and commercial storage assembly line and household storage assembly line. The tooling plate size of the household storage assembly line is 800mm long*700mm wide*20mm thick, and the tooling plate size of the industrial and commercial storage assembly line is 1300mm long*900mm wide*25mm thick; the aluminum shell battery pack assembly line system adjusts the corresponding tooling plates under different sections, and can be optimized according to the specific needs of each section to ensure the best adaptability and support during the assembly and processing process, and selects the appropriate thickness and material according to the different loads and usage environments to ensure the strength and durability of the tooling plates and improve safety.

[0030] First, the device is connected to an external control device and 220V AC power, and the control device can be a conventional known device such as a computer. Then the staff checks the welding points of the battery module. OK cells flow into the next station, and NG products are transferred to the NG buffer station by the transfer mechanism 4. Then, the battery module after welding the aluminum plate and the collection line is installed with a cover plate, and the sealing of the battery pack after assembling the cover plate is tested. Then, the OK cells and NG cells are sorted out. Finally, the staff uses the EOL insulation withstand voltage charge and discharge tester 7 to test the total module voltage, module internal resistance, insulation resistance between the module total positive and the end plate, and withstand voltage between the module total positive and the end plate of the battery module.

[0031] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. An aluminum shell battery pack assembly line system, comprising a speed chain (1), characterized in that: It also includes a module section installed on the side of the double-speed chain (1), the double-speed chain (1) runs through the entire module section, and the module section includes a solder joint detection workstation (2), a cover assembly workstation (3), a transfer mechanism (4), a reserved workstation (5), an airtightness test station (6) and an EOL insulation withstand voltage charge and discharge tester (7) installed in sequence from left to right; The solder joint inspection workstation (2) is used to inspect the solder joints of the battery module. OK cells flow into the next station, while NG cells are transferred to the NG buffer station by the transfer mechanism (4). The cover plate assembly workstation (3) is used to install the cover plate on the battery module after welding the aluminum plate and the collection line; The airtightness test station (6) includes a gas booster pump, a helium leak detector and a data recorder. The airtightness test station (6) is used to test the sealing of the battery pack after the cover plate is assembled, and to sort out OK cells and NG cells; The EOL insulation withstand voltage charge and discharge tester (7) is used to test the total module voltage, module internal resistance, insulation resistance between the total positive terminal of the module and the end plate, and withstand voltage between the total positive terminal of the module and the end plate of the battery module. The surface of the speed chain (1) is loaded with a tooling plate.

2. The aluminum shell battery pack assembly line system according to claim 1, characterized in that: The speed chain (1) is used to transport tooling plates, and a corresponding blocking or positioning mechanism is set at each workstation to ensure that the tooling plates can be accurately positioned at each workstation. The speed chain (1) is made of square tubes with a length, width and height of 60mm*40mm*3mm, which are welded and then painted.

3. The aluminum shell battery pack assembly line system according to claim 1, characterized in that: The transfer mechanism (4) is movably arranged on the double-speed chain (1) and corresponds to the cover assembly workstation (3), the reserved workstation (5), the airtightness test station (6) and the EOL insulation withstand voltage charge and discharge tester (7), respectively. The transfer mechanism (4) is used to transfer the battery cells on the tooling board to the corresponding workstation; and / or, to transfer the battery cells on the tooling board to the double-speed chain (1).

4. The aluminum shell battery pack assembly line system according to claim 1, characterized in that: After the EOL insulation withstand voltage charge and discharge tester (7) is tested, the materials are manually unloaded and transported, and after the upper battery cells are taken away, the empty tooling plate descends to the lower layer and flows to the upper material elevator.

5. The aluminum shell battery pack assembly line system according to claim 1, characterized in that: The total voltage of the module is the voltage between the total positive and total negative of the measurement module, specifically 5V≤U≤300V, the internal resistance of the module is the AC internal resistance between the total positive and total negative of the measurement module, the insulation resistance between the total positive of the module and the end plate is the insulation resistance R between the total positive of the test module and the end plate, specifically R≥550MΩ, and the withstand voltage between the total positive of the module and the end plate is the withstand voltage performance between the total positive of the test module and the end plate, specifically I≤1mA.

6. The aluminum shell battery pack assembly line system according to claim 1, characterized in that: The tooling plate is a 20mm thick aluminum plate, and a 5mm thick glass fiber plate is fixed on the surface as an insulation plate. The maximum load of the speed chain (1) reaches 500KG / meter. The tooling plate size of the module section is 1150mm long*600mm wide*20mm thick.

7. The aluminum shell battery pack assembly line system according to claim 6, characterized in that: The module section is further divided into an industrial and commercial storage assembly line and a household storage assembly line. The tooling plate size of the household storage assembly line is 800mm long * 700mm wide * 20mm thick, and the tooling plate size of the industrial and commercial storage assembly line is 1300mm long * 900mm wide * 25mm thick.

Images