Assembly Method of Battery Energy Storage System

Abstract

The present invention provides an assembly method for a battery energy storage system, which relates to the technical field of battery pack production. The assembly method for the battery energy storage system includes the following assembly steps. S1: Shell assembly detection. Before the processed bottom case is placed on the assembly line, the staff first conducts a preliminary inspection on the bottom case, rejects the unqualified bottom cases, and then the staff places the inspected bottom cases on the assembly line and assembles a display screen, a face sticker, a switch, and a lamp board on each qualified bottom case respectively. Through a programmed assembly production line of shell assembly detection - insulating board assembly detection - battery cell assembly detection - back plate assembly detection - machine cover assembly detection - overall test, the household energy storage cabinet is disassembled into multiple separate assembly production lines, reducing the requirement for the professional level of staff at a single assembly station and facilitating the improvement of the overall assembly work efficiency of the energy storage cabinet.

Description

Technical Field

[0001] The present invention relates to the technical field of battery pack production, and specifically to an assembly method for a battery energy storage system. Background Art

[0002] With the development and progress of social technology, natural energy sources such as water conservancy, wind energy, and solar energy have been widely used. Among them, solar energy products represented by solar water heaters have entered thousands of households and integrated into the lives of ordinary people. At the same time, a series of municipal projects launched by the government, such as solar street lights, have greatly improved people's daily travel and also driven the booming development of the photovoltaic industry. While these new energy technologies bring convenience to people's lives, they significantly reduce environmental pollution.

[0003] Nowadays, household solar energy storage technology has been further developed, and the concept of "home power station" has been put forward, aiming to create a green power plant that uses solar power generation and energy storage technology to provide power supply for household appliances. Around the concept of "home power station", traditional power supply manufacturers have successively launched related component products, such as photovoltaic inverters and household solar energy storage cabinets. However, the existing assembly method of household solar energy storage cabinets adopts a flow-through comprehensive assembly method. After the comprehensive assembly is completed, unified performance and other tests are carried out at the end of the assembly line. Then, the unqualified products are returned to the corresponding assembly stations for re-assembly. When re-assembling the unqualified products, they need to be completely disassembled before they can be re-assembled again. The rework workload is large and the work efficiency is low. Therefore, those skilled in the art have proposed an assembly method for a battery energy storage system. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides an assembly method for a battery energy storage system, which solves the problems of low work efficiency and large rework workload in the assembly of household energy storage cabinets.

[0005] To achieve the above objectives, the present invention is realized through the following technical solutions: An assembly method for a battery energy storage system includes the following assembly steps:

[0006] S1: Shell Assembly and Inspection

[0007] Before the processed machine bottom shell is put on the assembly line, the staff first conducts a preliminary inspection on the machine bottom shell, rejects the unqualified machine bottom shells, and then the staff puts the inspected machine bottom shells on the assembly line and respectively assembles a display screen, a face sticker, a switch, and a lamp board on each qualified machine bottom shell. After the assembly is completed, the equipment assembled on the machine bottom shell is inspected. After passing the inspection, the machine bottom shell is transported to the next assembly station through a conveyor belt;

[0008] S2: Insulating Board Assembly and Inspection

[0009] After the bottom case assembled in step S1 reaches the insulating board assembly station via the conveyor belt, the staff first assembles the bottom pad on the bottom of the bottom case. After the bottom pad is assembled, the bottom insulating board, the left insulating foam, the rear insulating board, the right insulating board, and the front insulating board are assembled in sequence. After the assembly is completed, the equipment assembled on the bottom case is inspected. After passing the inspection, the bottom case is transported to the next assembly station via the conveyor belt;

[0010] S3: Cell Assembly Inspection

[0011] After the bottom case assembled in step S2 reaches the cell assembly station via the conveyor belt, the staff first assembles the battery fixing plate on the bottom of the bottom case, then installs the cell on the inner bottom of the bottom case, and then assembles the intermediate insulating board between the battery fixing plate and the cell. After the assembly is completed, the cell assembled on the bottom case is subjected to a conduction test. After passing the test, the bottom case is transported to the next assembly station via the conveyor belt;

[0012] S4: Backplane Assembly Inspection

[0013] After the bottom case assembled in step S3 reaches the backplane assembly station via the conveyor belt, the staff inspects the backplane before installation. After the inspection is completed, the communication transfer board and the BMS protection board are assembled on the backplane in sequence. The staff conducts a conduction test on the assembled backplane. The qualified backplane can be assembled on the bottom case assembled in step S3. After the assembly is completed, the bottom case is transported to the next assembly station via the conveyor belt;

[0014] S5: Cover Assembly Inspection

[0015] After the bottom case assembled in step S4 reaches the cover assembly station via the conveyor belt, the staff first assembles the insulating board on the movement core of the cell. After the upper insulating board is assembled, the pressing strip is assembled on the upper insulating board. Finally, the staff assembles the cover. After the cover is assembled, the staff can inspect the assembled equipment. The qualified bottom case is transported to the next test station via the conveyor belt;

[0016] S6: Overall Test

[0017] After the assembled energy storage battery reaches the final overall test station through the conveyance of the assembly line, the staff conducts the final test on the assembled energy storage battery through the test device. After passing the test, the subsequent film pasting and packaging operations can be carried out.

[0018] Preferably, when inspecting the bottom case in step S1, the inspection items include overall parameter specifications, edge treatment, deformation status, and the positions of mounting holes, etc. In step S1, the staff collect and process the unqualified bottom cases centrally.

[0019] Preferably, before assembling the battery cells in step S3, it is necessary to take photos of the production numbers on the bottom case and the nameplate information of the battery cells and upload them to the system.

[0020] Preferably, after assembling the battery cells in step S3, corresponding barcodes generated according to their nameplates are respectively pasted on the bottom case and the battery cells.

[0021] Preferably, before assembling the battery cells in step S3, it is necessary to conduct an appearance inspection and performance test on the battery cells, and eliminate the battery cells with unqualified performance and damaged appearance.

[0022] Preferably, the test of the assembled energy storage battery in step S6 includes performance test, appearance inspection, and weighing test.

[0023] The present invention provides an assembly method for a battery energy storage system. It has the following beneficial effects:

[0024] 1. Through a programmed assembly production line of shell assembly inspection - insulation board assembly inspection - battery cell assembly inspection - back panel assembly inspection - cover assembly inspection - overall test, the household energy storage cabinet is disassembled into multiple separate assembly production lines in the present invention, which reduces the requirement for the professional level of workers at a single assembly station, and at the same time can also reduce the labor intensity of the workers at a single assembly station, which is beneficial to improving the overall assembly work efficiency of the energy storage cabinet.

[0025] 2. By conducting separate performance tests after each assembly station is assembled in the present invention, the performance problems that occur during the assembly of the household energy storage cabinet can be discovered in time, and the household energy storage cabinets with discovered performance problems are returned to the previous assembly station for re-inspection in time, and so on, until the performance problems are solved and then reassembled according to the previous programmed assembly production line, which reduces the work intensity of reworking the energy storage battery assembly, does not require unified testing at the final test station, reduces the test pressure at the test station, and at the same time can improve the finished product qualification rate of the overall energy storage battery assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is an exploded schematic view of the overall structure of the present invention.

[0027] Among them, 1. Machine bottom shell; 2. Bottom backing plate; 3. Bottom insulating plate; 4. Left insulating foam; 5. Back plate; 6. Communication adapter board; 7. BMS protection board; 8. Rear insulating plate; 9. Machine cover; 10. Batten; 11. Upper insulating plate; 12. Right insulating plate; 13. Battery cell; 14. Front insulating plate; 15. Battery fixing plate; 16. Intermediate insulating plate; 17. Display screen; 18. Face sticker; 19. Switch; 20. Lamp board. Detailed implementation manner

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] Embodiment:

[0030] As Figure 1 shown, the embodiment of the present invention provides an assembly method for a battery energy storage system, including the following assembly steps:

[0031] S1: Shell assembly detection

[0032] Before the processed machine bottom shell 1 is put on the assembly line, the staff first conducts a preliminary inspection on the machine bottom shell 1, rejects the machine bottom shell 1 with unqualified processing, and then the staff puts the inspected machine bottom shell 1 on the assembly line and assembles the display screen 17, face sticker 18, switch 19, and lamp board 20 on each qualified machine bottom shell 1 respectively. After the assembly is completed, the equipment assembled on the machine bottom shell 1 is inspected. After passing the inspection, the machine bottom shell 1 is transported to the next assembly station through the conveyor belt;

[0033] S2: Insulating plate assembly detection

[0034] After the machine bottom shell 1 assembled in step S1 reaches the insulating plate assembly station through the conveyor belt, the staff first assembles the bottom backing plate 2 at the bottom of the machine bottom shell 1. After the bottom backing plate 2 is assembled, the bottom insulating plate 3, left insulating foam 4, rear insulating plate 8, right insulating plate 12, and front insulating plate 14 are assembled in sequence. After the assembly is completed, the equipment assembled on the machine bottom shell 1 is inspected. After passing the inspection, the machine bottom shell 1 is transported to the next assembly station through the conveyor belt;

[0035] S3: Battery cell assembly detection

[0036] After the bottom case 1 is assembled in step S2 and reaches the battery cell assembly station via the conveyor belt, the staff first assembles the battery fixing plate 15 at the bottom of the bottom case 1, then installs the battery cell 13 at the inner bottom of the bottom case 1, and then assembles the intermediate insulating plate 16 between the battery fixing plate 15 and the battery cell 13. After the assembly is completed, the battery cell 13 assembled on the bottom case 1 is subjected to a conduction test. After the test is qualified, the bottom case 1 is transported to the next assembly station via the conveyor belt;

[0037] S4: Backplane Assembly Inspection

[0038] After the bottom case 1 is assembled in step S3 and reaches the backplane assembly station via the conveyor belt, the staff conducts inspections on the backplane 5 before installation. After the inspection is completed, the communication transfer board 6 and the BMS protection board 7 are successively assembled on the backplane 5. The staff conducts a conduction test on the assembled backplane 5. The qualified backplane 5 can be assembled onto the bottom case 1 assembled in step S3. After the assembly is completed, the bottom case 1 is transported to the next assembly station via the conveyor belt;

[0039] S5: Cover Assembly Inspection

[0040] After the bottom case 1 is assembled in step S4 and reaches the cover assembly station via the conveyor belt, the staff first assembles the insulating plate 11 on the movement core of the battery cell 13. After the upper insulating plate 11 is assembled, the pressing strip 10 is continuously assembled on the upper insulating plate 11. Finally, the staff assembles the cover 9. After the cover is assembled, the staff can inspect the assembled equipment. The qualified bottom case 1 is transported to the next test station via the conveyor belt;

[0041] S6: Overall Test

[0042] After the assembled energy storage battery reaches the final overall test station via the conveyor of the assembly line, the staff conducts the final test on the assembled energy storage battery through the test device. After the test is qualified, the subsequent film pasting and packaging operations can be carried out.

[0043] When inspecting the bottom case 1 in step S1, the inspection items include overall parameter specifications, edge treatment, whether it is deformed, and the position of the mounting holes, etc. Before assembling the overall energy storage battery pack, carefully inspect the installation housing of the energy storage battery pack, promptly discover the bottom case 1 with problems to prevent it from flowing into the assembly production line. In step S1, the staff centrally collects and processes the unqualified bottom case 1. The unqualified bottom case 1 can be uniformly collected, then returned to the production station for re-modification, and can be used continuously after passing the inspection, reducing waste of resources.

[0044] Before assembling the battery cell 13 in step S3, it is necessary to take pictures of the production number on the machine bottom shell 1 and the nameplate information of the battery cell 13 and upload them to the system. Before assembling the battery pack, the staff takes pictures of the nameplate information of the battery pack and uploads it to the system. On the one hand, it is convenient to generate subsequent asset tags. On the other hand, the corresponding machine bottom shell 1 can be matched through the system to facilitate the confirmation of whether it is an original genuine product in subsequent quality assurance operations.

[0045] After the battery cell 13 is assembled in step S3, corresponding barcodes need to be generated according to its nameplate, and the barcodes corresponding to the nameplate are pasted on the machine bottom shell 1 and the battery cell 13 respectively. Asset barcodes corresponding to the nameplate are generated through the system to facilitate the verification during the subsequent storage battery out-of-warehouse process and subsequent asset reconciliation, so as to ensure the normal circulation and out-of-warehouse of all assets and prevent problems such as asset loss.

[0046] Before performing the battery cell assembly in step S3, it is necessary to conduct an appearance inspection and performance test on the battery cell 13, and eliminate the battery cells 13 with unqualified performance and damaged appearance. Before assembling the battery pack, the staff conducts a double inspection of the appearance and performance of the battery cells of the battery pack, and promptly eliminates the problematic battery cells during the inspection to prevent the occurrence of subsequent assembly defective products.

[0047] The test of the assembled energy storage battery in step S6 includes performance test, appearance inspection, and weighing test. Through multiple test coefficients such as performance test, appearance test, and weighing test, the assembled energy storage battery is comprehensively evaluated. Only the energy storage battery that passes the evaluation can proceed with subsequent packaging operations, etc. The energy storage battery that fails the evaluation will be returned to the quality inspection station for quality inspection.

[0048] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for assembling a battery energy storage system, characterized in that, It includes the following assembly steps: S1: Housing assembly inspection Before the processed bottom case (1) is placed on the assembly line, the staff first conducts a preliminary inspection on the bottom case (1), rejects the unqualified bottom cases (1), and then the staff places the inspected bottom cases (1) on the assembly line. The display screen (17), face sticker (18), switch (19), and lamp board (20) are respectively assembled on each qualified bottom case (1). After the assembly, the equipment assembled on the bottom case (1) is inspected. After passing the inspection, the bottom case (1) is transported to the next assembly station through the conveyor belt; S2: Insulating board assembly inspection After the bottom case (1) assembled in step S1 reaches the insulating board assembly station through the conveyor belt, the staff first assembles the bottom cushion plate (2) at the bottom of the bottom case (1). After the bottom cushion plate (2) is assembled, the bottom insulating board (3), left insulating foam (4), rear insulating board (8), right insulating board (12), and front insulating board (14) are successively assembled. After the assembly, the equipment assembled on the bottom case (1) is inspected. After passing the inspection, the bottom case (1) is transported to the next assembly station through the conveyor belt; S3: Cell assembly inspection After the bottom case (1) assembled in step S2 reaches the cell assembly station through the conveyor belt, the staff first assembles the battery fixing plate (15) at the bottom of the bottom case (1), then installs the cell (13) at the inner bottom of the bottom case (1), and then assembles the middle insulating board (16) between the battery fixing plate (15) and the cell (13). After the assembly, the conduction test is carried out on the cell (13) assembled on the bottom case (1). After passing the test, the bottom case (1) is transported to the next assembly station through the conveyor belt; S4: Backplane assembly inspection After the bottom case (1) assembled in step S3 reaches the backplane assembly station through the conveyor belt, the staff conducts an inspection on the backplane (5) before installation. After the inspection, the communication transfer board (6) and the BMS protection board (7) are successively assembled on the backplane (5). The staff conducts a conduction test on the assembled backplane (5). The qualified backplane (5) can be assembled on the bottom case (1) assembled in step S3. After the assembly, the bottom case (1) is transported to the next assembly station through the conveyor belt; S5: Cover assembly inspection After the bottom case (1) assembled in step S4 reaches the cover assembly station through the conveyor belt, the staff first assembles the insulating board (11) on the movement on the cell (13). After the upper insulating board (11) is assembled, the pressing strip (10) is continuously assembled on the upper insulating board (11). Finally, the staff assembles the cover (9). After the cover is assembled, the staff can inspect the assembled equipment. The qualified bottom case (1) is transported to the next test station through the conveyor belt; S6: Overall test After the energy storage battery is assembled, it is conveyed through the assembly line to the final overall testing station. The staff conducts the final test on the assembled energy storage battery through the testing device. After passing the test, the subsequent film pasting and packaging operations can be carried out.

2. The method for assembling a battery energy storage system according to claim 1, characterized in that: When detecting the machine bottom shell (1) in the S1 step, the detection items include the overall parameter specifications, edge treatment, whether it is deformed, and the position of the mounting holes, etc. In the S1 step, the staff centrally collects and processes the unqualified machine bottom shells (1).

3. The method for assembling a battery energy storage system according to claim 1, characterized in that: Before assembling the battery cell (13) in the S3 step, it is necessary to take pictures of the production number on the machine bottom shell (1) and the nameplate information of the battery cell (13) and upload them to the system.

4. The method for assembling a battery energy storage system according to claim 1, characterized in that: After the battery cell (13) is assembled in the S3 step, a corresponding barcode needs to be generated according to its nameplate, and the barcodes corresponding to the nameplate are respectively pasted on the machine bottom shell (1) and the battery cell (13).

5. The method for assembling a battery energy storage system according to claim 1, characterized in that: Before assembling the battery cell in the S3 step, it is necessary to conduct an appearance inspection and performance test on the battery cell (13), and eliminate the battery cells (13) with unqualified performance and damaged appearance.

6. The method for assembling a battery energy storage system according to claim 1, characterized in that: The test on the assembled energy storage battery in the S6 step includes performance test, appearance inspection, and weighing test.

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