Method for replacing restraining tray before and after formation process

Abstract

The method comprises the steps that at least one tray replacement production line is used, and the tray replacement production line comprises a conventional tray conveying line, a restrained tray conveying line and at least two replacement mechanisms arranged between the conventional tray conveying line and the restrained tray conveying line; a conventional tray first station and a conventional tray second station are arranged on the side edge of the conventional tray conveying line, and the conventional tray conveying line conveys conventional trays loaded with battery cells to the conventional tray first station and conveys empty conventional trays to the conventional tray second station; a first restraint tray station and a second restraint tray station are arranged on the side edge of the restraint tray conveying line, and the restraint tray conveying line conveys restraint trays loaded with battery cells to the second restraint tray station and conveys empty restraint trays to the first restraint tray station. The tray replacing efficiency is high, the overall production line layout is reasonable, and the occupied space is small.

Description

Technical Field

[0001] The present invention relates to the technical field of power batteries, and in particular to a method for replacing a restraint tray before and after a formation process. Background Art

[0002] Batteries are widely used in the field of new energy, such as electric vehicles and new energy vehicles. New energy vehicles and electric vehicles have become a new trend in the development of the automotive industry. The production process of batteries includes a formation step, which refers to the chemical and electrochemical reaction process in which the green plate is converted into a charged state in the electrolyte through charging, removing impurities and improving the electrochemical activity of its active substances.

[0003] During the formation process of the battery, the battery will inevitably swell, so the industry usually uses a restraint tray to restrain the battery during the charging and discharging process to reduce the battery expansion by external force. However, since the battery does not need to be restrained in processes other than charging and discharging, there is a process of replacing the conventional tray with the battery cell with the restraint tray before the formation process, and a process of replacing the restraint tray with the battery cell with the conventional tray after the formation process.

[0004] Due to the complex distribution of pallet circulation lines at present, the pallet changing device protrudes from the flow line, resulting in large space occupation and low overall efficiency of pallet replacement. Summary of the invention

[0005] In view of the above problems existing in the existing production line using restraint trays, the present invention aims to provide a method for replacing restraint trays before and after the formation process, which has a reasonable layout, occupies a small space, and has a high overall tray replacement efficiency.

[0006] The specific technical solutions are as follows:

[0007] A method for replacing a restraint pallet before and after a formation process, using at least one pallet replacement production line, the pallet replacement production line comprising: a conventional pallet conveyor line, a restraint pallet conveyor line and at least two replacement mechanisms disposed therebetween;

[0008] A conventional pallet first station and a conventional pallet second station are provided on the side of the conventional pallet conveyor line, and the conventional pallet conveyor line conveys conventional pallets loaded with battery cells to the conventional pallet first station and conveys empty conventional pallets to the conventional pallet second station;

[0009] The side of the restraint tray conveyor line is provided with a first restraint tray station and a second restraint tray station. The restraint tray conveyor line conveys the restraint tray loaded with battery cells to the second restraint tray station and conveys the empty restraint tray to the first restraint tray station.

[0010] Among them, one of the replacement mechanisms transfers the battery cells in the conventional tray on the first station of the conventional tray to the empty restraint tray on the first station of the restraint tray, and the other replacement mechanism transfers the battery cells in the restraint tray on the second station of the restraint tray to the empty conventional tray on the second station of the conventional tray.

[0011] In the above-mentioned method for replacing the restraint tray before and after the chemical formation process, the two replacement mechanisms work simultaneously.

[0012] The above-mentioned method for replacing the restraint tray before and after the chemical formation process, wherein one replacement mechanism covers the first station of the conventional tray and the first station of the restraint tray, and another replacement mechanism covers the second station of the conventional tray and the second station of the restraint tray.

[0013] The above-mentioned method for replacing the restraint tray before and after the formation process, wherein the conventional tray conveyor line includes an upper conventional tray conveyor line and a lower conventional tray conveyor line arranged in parallel, and a conventional tray elevator, the conventional tray first station is arranged on the side of the upper conventional tray conveyor line, and the conventional tray second station is arranged on the side of the lower conventional tray conveyor line;

[0014] The restraint pallet conveyor line includes an upper restraint pallet conveyor line and a lower restraint pallet conveyor line which are arranged in parallel, and a restraint pallet elevator. The restraint pallet first station is arranged on the side of the upper restraint pallet conveyor line, and the restraint pallet second station is arranged on the side of the lower restraint pallet conveyor line.

[0015] The above-mentioned method for replacing the restraint tray before and after the formation process, wherein the upper conventional tray conveyor line, the lower conventional tray conveyor line, the upper restraint tray conveyor line and the lower restraint tray conveyor line are all arranged along a straight line, the upper conventional tray conveyor line is arranged parallel to the upper restraint tray conveyor line, and the lower conventional tray conveyor line is arranged parallel to the lower restraint tray conveyor line.

[0016] The above-mentioned method for replacing the restraint tray before and after the chemical formation process, wherein the conventional tray first station is located between the conventional tray second station and the conventional tray elevator; the restraint tray second station is located between the restraint tray first station and the restraint tray elevator.

[0017] The above-mentioned method for replacing the restraint pallet before and after the formation process, wherein a main conveyor line is provided on one side of the pallet replacement production line, and the main conveyor line is connected to the conventional pallet conveyor line;

[0018] The main conveying line includes an upper input line and a lower output line arranged in parallel, the upper input line is connected to the upper conventional pallet conveying line, and the lower output line is connected to the lower conventional pallet conveying line;

[0019] The upper layer input line and the lower layer output line are both arranged along a straight line;

[0020] The upper layer input line is arranged vertically with the upper layer conventional pallet conveying line, and the lower layer input line is arranged vertically with the lower layer conventional pallet conveying line;

[0021] The conventional pallet first station and the conventional pallet second station are both located between the main conveying line and the conventional pallet elevator;

[0022] The restraint tray elevator and the restraint tray second station are both located between the main conveying line and the restraint tray first station.

[0023] The above-mentioned method for replacing the restraint tray before and after the chemical formation process, wherein an accommodation space is formed between the restraint tray conveyor line, the main conveyor line and the conventional tray conveyor line, and the two replacement mechanisms are both arranged in the accommodation space.

[0024] In the above-mentioned method for replacing the restraint tray before and after the formation process, a battery cell formation area is provided on the other side of the tray replacement production line, and the battery cell formation area is displaced from the opening of the accommodating space.

[0025] The above-mentioned method for replacing the restraint tray before and after the formation process, wherein the replacement method comprises:

[0026] Step S1: a conventional tray loaded with battery cells enters the upper conventional tray conveying line from the upper input line and is conveyed to the first station of the conventional tray;

[0027] Step S2: a replacement mechanism transfers the battery cells on the first station of the conventional tray to the empty restraining tray on the first station of the restraining tray, the empty conventional tray on the first station of the conventional tray is returned to the upper conventional tray conveyor line, and the empty conventional tray passes through the conventional tray elevator and the lower conventional tray conveyor line in sequence until it enters the second station of the conventional tray;

[0028] Step S3: the restraint tray with cells on the first station of the restraint tray enters the upper restraint tray conveyor line and enters the cell forming area. The restraint tray with cells that has completed the forming process passes through the lower restraint tray conveyor line until it enters the second station of the restraint tray.

[0029] Step S4: Another replacement mechanism transfers the battery cells on the second station of the restraint tray to the empty conventional tray on the second station of the conventional tray. The empty restraint tray returns to the lower restraint tray conveyor line, and passes through the restraint tray elevator and the upper restraint tray conveyor line until it enters the first station of the restraint tray. The conventional tray loaded with battery cells returns to the lower conventional tray conveyor line and is conveyed to the lower output line.

[0030] Compared with the prior art, the above technical solution has the following positive effects:

[0031] The tray replacement production line of the present invention replaces a conventional tray containing battery cells with a restrained tray. After the formation process is completed, the restrained tray containing battery cells is replaced with a conventional tray. The tray replacement efficiency is high, the overall production line layout is reasonable, and the space occupied is small. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a structural schematic diagram of a method for replacing a restraint tray before and after a formation process according to the present invention;

[0033] Figure 2 It is a schematic diagram of the overall structure of a method for replacing a restraint tray before and after a formation process according to the present invention;

[0034] In the attached figure: 1. Pallet replacement production line; 2. Conventional pallet conveyor line; 3. Restrained pallet conveyor line; 4. Replacement mechanism; 5. Main conveyor line; 6. Accommodating space; 7. Battery cell formation area; 9. Battery cell scanning mechanism; 21. Conventional pallet first station; 22. Conventional pallet second station; 23. Upper conventional pallet conveyor line; 25. Conventional pallet elevator; 31. Restrained pallet first station; 32. Restrained pallet second station; 33. Upper restrained pallet conveyor line; 35. Restrained pallet elevator; 51. Upper input line; 81. Upper conveyor branch line. DETAILED DESCRIPTION

[0035] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0036] like Figure 1 to Figure 2 As shown, a method for replacing a restraint tray before and after a formation process according to a preferred embodiment is shown, comprising: using at least one tray to replace the production line 1.

[0037] Further, as a preferred embodiment, the pallet replacement production line 1 comprises: a conventional pallet conveying line 2, a restrained pallet conveying line 3 and at least two replacement mechanisms 4 disposed therebetween;

[0038] A conventional pallet first station 21 and a conventional pallet second station 22 are provided on the side of the conventional pallet conveyor line 2. The conventional pallet conveyor line 2 conveys conventional pallets loaded with battery cells to the conventional pallet first station 21, and conveys empty conventional pallets to the conventional pallet second station 22;

[0039] A first restraint tray station 31 and a second restraint tray station 32 are provided on the side of the restraint tray conveyor line 3 . The restraint tray conveyor line 3 conveys the restraint tray loaded with battery cells to the second restraint tray station 32 , and conveys the empty restraint tray to the first restraint tray station 31 .

[0040] Further, as a preferred embodiment, one replacement mechanism 4 transfers the battery cells in the conventional tray on the conventional tray first station 21 to the empty restraint tray on the restraint tray first station 31, and another replacement mechanism 4 transfers the battery cells in the restraint tray on the restraint tray second station 32 to the empty conventional tray on the conventional tray second station 22.

[0041] Further, as a preferred embodiment, the two replacement mechanisms 4 can work simultaneously.

[0042] One replacement mechanism 4 replaces a conventional tray containing battery cells with a restrained tray, and another replacement mechanism 4 replaces a restrained tray containing battery cells with a conventional tray, and the replacement is performed simultaneously to improve replacement efficiency.

[0043] The replacement mechanism is a module robot.

[0044] Among them, conventional pallets are injection molded pallets, and restrained pallets are metal pallets.

[0045] The above are only preferred embodiments of the present invention, and are not intended to limit the implementation and protection scope of the present invention.

[0046] The present invention also has the following implementation modes based on the above:

[0047] In further embodiments of the present invention, please continue to refer to Figure 1 to Figure 2 As shown, one replacement mechanism 4 covers the conventional pallet first station 21 and the restrained pallet first station 31 , and another replacement mechanism 4 covers the conventional pallet second station 22 and the restrained pallet second station 32 .

[0048] Preferably, two conventional pallet first stations 21 and two conventional pallet second stations 22 are provided on the side of the conventional pallet conveyor line 2, the two conventional pallet first stations 21 are arranged in parallel, and the two conventional pallet second stations 22 are arranged in parallel.

[0049] Two first restraint tray stations 31 and two second restraint tray stations 32 are provided on the side of the restraint tray conveyor line 3 . The two first restraint tray stations 31 are arranged in parallel, and the two second restraint tray stations 32 are arranged in parallel.

[0050] One replacement mechanism 4 covers two conventional pallet first stations 21 and two restrained pallet first stations 31 , and another replacement mechanism 4 covers two conventional pallet second stations 22 and two restrained pallet second stations 32 .

[0051] The two conventional pallet first stations 21 are opposite to the two restrained pallet first stations 31 respectively, and the two conventional pallet second stations 22 are opposite to the two restrained pallet second stations 32 respectively.

[0052] A corresponding first station 21 of a conventional tray and a first station 31 of a restrained tray replace battery cells, and they form a group; another corresponding first station 21 of a conventional tray and another first station 31 of a restrained tray replace battery cells, and they form a group.

[0053] A corresponding conventional tray second station 22 and a restrained tray second station 32 replace battery cells, and they form a group; another corresponding conventional tray second station 22 and another restrained tray second station 32 replace battery cells, and they form a group.

[0054] A replacement mechanism 4 replaces the battery cells of two corresponding groups of conventional tray first stations 21 and restrained tray first stations 31 respectively, and a replacement mechanism 4 replaces the battery cells of the two groups alternately;

[0055] Another replacement mechanism 4 replaces the battery cells of two corresponding groups of conventional tray second stations 22 and restrained tray second stations 32 respectively, and another replacement mechanism 4 replaces the battery cells of the two groups alternately.

[0056] Further improve the efficiency of battery cell replacement.

[0057] In a further embodiment of the present invention, the conventional pallet conveyor line 2 includes an upper conventional pallet conveyor line 23 and a lower conventional pallet conveyor line, and a conventional pallet elevator 25, which are arranged in parallel above and below. The conventional pallet first station 21 is arranged on the side of the upper conventional pallet conveyor line 23, and the conventional pallet second station 22 is arranged on the side of the lower conventional pallet conveyor line.

[0058] In a further embodiment of the present invention, the restraint pallet conveyor line 3 includes an upper restraint pallet conveyor line 33 and a lower restraint pallet conveyor line, and a restraint pallet elevator 35, which are arranged in parallel above and below. The restraint pallet first station 31 is arranged on the side of the upper restraint pallet conveyor line 33, and the restraint pallet second station 32 is arranged on the side of the lower restraint pallet conveyor line.

[0059] In a further embodiment of the present invention, the upper conventional pallet conveyor line 23, the lower conventional pallet conveyor line, the upper restraint pallet conveyor line 33 and the lower restraint pallet conveyor line are all arranged along a straight line, the upper conventional pallet conveyor line 23 is arranged parallel to the upper restraint pallet conveyor line 33, and the lower conventional pallet conveyor line is arranged parallel to the lower restraint pallet conveyor line.

[0060] In a further embodiment of the present invention, the conventional pallet first station 21 is located between the conventional pallet second station 22 and the conventional pallet elevator 25 ; the restrained pallet second station 32 is located between the restrained pallet first station 31 and the restrained pallet elevator 35 .

[0061] In a further embodiment of the present invention, a main conveying line 5 is provided on one side of the pallet replacement production line 1 , and the main conveying line 5 is connected to the conventional pallet conveying line 2 .

[0062] In a further embodiment of the present invention, the main conveyor line 5 includes an upper input line 51 and a lower output line arranged in parallel, the upper input line 51 is connected to the upper conventional pallet conveyor line 23, and the lower output line is connected to the lower conventional pallet conveyor line.

[0063] In a further embodiment of the present invention, the upper layer input lines 51 and the lower layer output lines are arranged along straight lines.

[0064] In a further embodiment of the present invention, the upper input line 51 is arranged perpendicularly to the upper conventional pallet conveying line 23, and the lower input line is arranged perpendicularly to the lower conventional pallet conveying line.

[0065] In a further embodiment of the present invention, the conventional pallet first station 21 and the conventional pallet second station 22 are both located between the main conveying line 5 and the conventional pallet elevator 25 .

[0066] In a further embodiment of the present invention, the restraint tray elevator 35 and the restraint tray second station 32 are both located between the main conveyor line 5 and the restraint tray first station 31 .

[0067] In a further embodiment of the present invention, an accommodating space is formed between the restrained pallet conveyor line 3 , the main conveyor line 5 and the conventional pallet conveyor line 2 , and the two replacement mechanisms 4 are both arranged in the accommodating space 6 .

[0068] In a further embodiment of the present invention, a battery cell formation area 7 is provided on the other side of the tray replacement production line 1 , and the battery cell formation area 7 is located at the opening of the displacement accommodation space 6 .

[0069] In a further embodiment of the present invention, through the above-mentioned position distribution, the conventional pallet withdrawn from the conventional pallet first station 21 re-enters the upper conventional pallet conveyor line 23, then enters the conventional pallet elevator 25, and then enters the lower conventional pallet conveyor line until it arrives at the conventional pallet second station 22 to wait. The conveying section of the conventional pallet is the waiting area of ​​the conventional pallet. Since the conventional pallet second station 22 is located between the conventional pallet first station 21 and the upper input line 51, instead of arranging the conventional pallet first station 21 between the conventional pallet second station 22 and the upper input line 51, the length of the conveying section of the conventional pallet is extended, thereby increasing the number of waiting conventional pallets, and preventing multiple conventional pallets from being blocked on the conveying section when the replacement mechanism 4 on the conventional pallet second station 22 has not completed the replacement of the battery cell, thereby ensuring the normal transportation of the conventional pallets while also improving the overall operation efficiency;

[0070] The restraint tray with the battery cells withdrawn from the first restraint tray station 31 enters the formation area, and after completing the battery cell formation process, the restraint tray with the battery cells enters the lower restraint tray conveyor line, and then enters the second restraint tray station 32, and after the battery cells in the restraint tray on the second restraint tray station 32 are taken out by the replacement mechanism 4, the restraint tray returns to the lower restraint tray conveyor line;

[0071] The restraint pallet withdrawn from the restraint pallet second station 32 re-enters the lower restraint pallet conveyor line, then enters the restraint pallet elevator 35, and then enters the upper restraint pallet conveyor line 33, until it arrives at the restraint pallet first station 31 and waits. The conveying section of the restraint pallet is the waiting area for the restraint pallet. Since the restraint pallet second station 32 is located between the restraint pallet first station 31 and the upper input line 51, instead of arranging the restraint pallet first station 31 between the restraint pallet second station 32 and the upper input line 51, the length of the restraint pallet conveying section is extended, thereby increasing the number of waiting restraint pallets, which can prevent multiple restraint pallets from being blocked on the conveying section when the replacement mechanism 4 on the restraint pallet second station 32 has not completed the replacement of the battery cells, thereby ensuring the normal transportation of the restraint pallets while improving the overall operating efficiency.

[0072] In a further embodiment of the present invention, an upper conveying branch line 81 is provided on the side of the upper restraint tray conveyor line 33 and / or a lower conveying branch line is provided on the side of the lower restraint tray conveyor line; a battery cell scanning mechanism 9 is provided on the upper restraint tray conveyor line 33 and / or the lower restraint tray conveyor line, and the battery cell scanning mechanism 9 is used to detect whether the battery cells in the restraint tray are qualified, and unqualified battery cells are pushed to the upper conveying branch line 81 or the lower conveying branch line.

[0073] The conventional pallet on the upper conventional pallet conveyor line 23 enters the conventional pallet first station 21 through a pushing mechanism, which can be a component with thrust such as a cylinder; similarly, the conventional pallet can be withdrawn from the conventional pallet first station 21 by another pushing mechanism.

[0074] Similarly, the conventional pallet enters the conventional pallet second station 22 and returns from the conventional pallet second station 22 respectively through the pushing mechanism.

[0075] Similarly, the restraint tray on the upper restraint tray conveyor line 33 enters the restraint tray first station 31 and retreats from the restraint tray first station 31 respectively through the pushing mechanism.

[0076] Similarly, the restraint tray enters the second restraint tray station 32 and returns from the second restraint tray station 22 respectively through the pushing mechanism.

[0077] The replacement method of the present invention is described below:

[0078] Step S1: The conventional tray loaded with battery cells enters the upper conventional tray conveying line 23 from the upper input line 51 and is conveyed to the first station 21 of the conventional tray;

[0079] Step S2: a replacement mechanism 4 transfers the battery cells on the conventional tray first station 21 to the empty restraining tray on the restraining tray first station 31, and the empty conventional tray on the conventional tray first station 21 is returned to the upper conventional tray conveyor line 23, and the empty conventional tray passes through the conventional tray elevator 25 and the lower conventional tray conveyor line in sequence until it enters the conventional tray second station 22;

[0080] Step S3: The restraint tray with cells on the first restraint tray station 31 enters the upper restraint tray conveyor line 33 and enters the cell forming area 7. The restraint tray with cells that has completed the forming process passes through the lower restraint tray conveyor line until it enters the second restraint tray station 32.

[0081] Step S4: Another replacement mechanism 4 transfers the battery cells on the restraint tray second station 32 to the empty conventional tray on the conventional tray second station 22. The empty restraint tray returns to the lower restraint tray conveyor line, and passes through the restraint tray elevator 35 and the upper restraint tray conveyor line 33 until it enters the restraint tray first station 31. The conventional tray loaded with battery cells returns to the lower conventional tray conveyor line and is conveyed to the lower output line.

[0082] A plurality of pallet replacement production lines 1 are arranged on the side of the main conveyor line 5, and the plurality of pallet replacement production lines 1 are arranged in parallel. In the same space, a plurality of pallet replacement production lines 1 can be arranged.

[0083] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for replacing a restraint tray before and after a chemical formation process, characterized in that: Using at least one pallet replacement production line, the pallet replacement production line includes: a conventional pallet conveying line, a restrained pallet conveying line and at least two replacement mechanisms disposed therebetween; A conventional pallet first station and a conventional pallet second station are provided on the side of the conventional pallet conveyor line, and the conventional pallet conveyor line conveys conventional pallets loaded with battery cells to the conventional pallet first station and conveys empty conventional pallets to the conventional pallet second station; The side of the restraint tray conveyor line is provided with a first restraint tray station and a second restraint tray station. The restraint tray conveyor line conveys the restraint tray loaded with battery cells to the second restraint tray station and conveys the empty restraint tray to the first restraint tray station. Among them, one of the replacement mechanisms transfers the battery cells in the conventional tray on the first station of the conventional tray to the empty restraint tray on the first station of the restraint tray, and the other replacement mechanism transfers the battery cells in the restraint tray on the second station of the restraint tray to the empty conventional tray on the second station of the conventional tray.

2. The method for replacing the restraint tray before and after the chemical forming process according to claim 1, characterized in that: The two changing mechanisms can work simultaneously.

3. The method for replacing the restraint tray before and after the formation process according to claim 1, characterized in that: One of the replacement mechanisms covers the first station of the conventional pallet and the first station of the restraint pallet, and the other replacement mechanism covers the second station of the conventional pallet and the second station of the restraint pallet.

4. The method for replacing the restraint tray before and after the chemical forming process according to claim 3 is characterized in that: The conventional pallet conveyor line comprises an upper conventional pallet conveyor line and a lower conventional pallet conveyor line which are arranged in parallel, and a conventional pallet elevator, wherein the conventional pallet first station is arranged on the side of the upper conventional pallet conveyor line, and the conventional pallet second station is arranged on the side of the lower conventional pallet conveyor line; The restraint pallet conveyor line includes an upper restraint pallet conveyor line and a lower restraint pallet conveyor line which are arranged in parallel, and a restraint pallet elevator. The restraint pallet first station is arranged on the side of the upper restraint pallet conveyor line, and the restraint pallet second station is arranged on the side of the lower restraint pallet conveyor line.

5. The method for replacing the restraint tray before and after the chemical forming process according to claim 4, characterized in that: The upper conventional pallet conveying line, the lower conventional pallet conveying line, the upper restrained pallet conveying line and the lower restrained pallet conveying line are all arranged along a straight line, the upper conventional pallet conveying line is arranged parallel to the upper restrained pallet conveying line, and the lower conventional pallet conveying line is arranged parallel to the lower restrained pallet conveying line.

6. The method for replacing the restraint tray before and after the chemical forming process according to claim 5, characterized in that: The first station of the conventional pallet is located between the second station of the conventional pallet and the conventional pallet elevator; the second station of the restrained pallet is located between the first station of the restrained pallet and the restrained pallet elevator.

7. The method for replacing the restraint tray before and after the chemical forming process according to claim 6, characterized in that: A main conveying line is provided on one side of the pallet replacement production line, and the main conveying line is connected to the conventional pallet conveying line; The main conveying line includes an upper input line and a lower output line arranged in parallel, the upper input line is connected to the upper conventional pallet conveying line, and the lower output line is connected to the lower conventional pallet conveying line; The upper layer input line and the lower layer output line are both arranged along a straight line; The upper layer input line is arranged vertically with the upper layer conventional pallet conveying line, and the lower layer input line is arranged vertically with the lower layer conventional pallet conveying line; The conventional pallet first station and the conventional pallet second station are both located between the main conveying line and the conventional pallet elevator; The restraint tray elevator and the restraint tray second station are both located between the main conveying line and the restraint tray first station.

8. The method for replacing the restraint tray before and after the formation process according to claim 7, characterized in that: An accommodating space is formed between the restrained pallet conveying line, the main conveying line and the conventional pallet conveying line, and the two replacement mechanisms are both arranged in the accommodating space.

9. The method for replacing the restraint tray before and after the chemical forming process according to claim 8, characterized in that: A battery cell forming area is disposed on the other side of the tray replacement production line, and the battery cell forming area is displaced from the opening of the accommodating space.

10. The method for replacing the restraint tray before and after the chemical forming process according to claim 9, characterized in that: The replacement method comprises: Step S1: a conventional tray loaded with battery cells enters the upper conventional tray conveying line from the upper input line and is conveyed to the first station of the conventional tray; Step S2: a replacement mechanism transfers the battery cells on the first station of the conventional tray to the empty restraining tray on the first station of the restraining tray, the empty conventional tray on the first station of the conventional tray is returned to the upper conventional tray conveyor line, and the empty conventional tray passes through the conventional tray elevator and the lower conventional tray conveyor line in sequence until it enters the second station of the conventional tray; Step S3: the restraint tray with cells on the first station of the restraint tray enters the upper restraint tray conveyor line and enters the cell formation area. The restraint tray with cells that has completed the formation process passes through the lower restraint tray conveyor line until it enters the second station of the restraint tray. Step S4: Another replacement mechanism transfers the battery cells on the second station of the restraint tray to the empty conventional tray on the second station of the conventional tray. The empty restraint tray returns to the lower restraint tray conveyor line, and passes through the restraint tray elevator and the upper restraint tray conveyor line until it enters the first station of the restraint tray. The conventional tray loaded with battery cells returns to the lower conventional tray conveyor line and is conveyed to the lower output line.

Images