Battery module production line

Abstract

The invention belongs to the technical field of battery module production lines, and relates to a battery module production line. The battery module production line comprises a plurality of processing lines, each processing line is provided with a conveying single machine, each conveying single machine comprises a rack and at least one speed chain installed on the rack, and the distance between two chain assemblies of each speed chain is adjustable; the speed chain is used for conveying tool pieces; the speed chains of at least part of the processing lines can be sequentially arranged in a butt joint mode. The battery module production line can be compatible with batch production of multiple products.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of battery module production line, in particular to a battery module production line. BACKGROUND

[0002] At present, most of the battery module production lines are non-standard customized, which cannot be compatible with the batch production of multiple products according to the current product design. When the product is upgraded or replaced, the production line needs to be modified, and the production of new products is realized by replacing tooling, fixtures and part of special machines. This modification method not only occupies time and leads to the decline of production efficiency, but also increases the cost greatly. SUMMARY

[0003] The technical problem to be solved by the present application is that the existing battery module production line cannot be compatible with the batch production of multiple products, and a battery module production line is provided.

[0004] To solve the above technical problems, the present application provides a battery module production line, which comprises a plurality of processing lines, each of which is provided with a conveying unit, the conveying unit comprises a rack and at least one speed chain installed on the rack, and the spacing between the two chain assemblies of the speed chain is adjustable.

[0005] The speed chain is used for conveying tooling;

[0006] The speed chains of at least part of the processing lines can be sequentially docked.

[0007] According to the battery module production line of the present application, one or more conveying units need to be respectively installed on each processing line, so that the battery module production line has a unified appearance effect and is overall beautiful and atmospheric. In addition, since the spacing between the two chain assemblies of each speed chain on the conveying unit is adjustable, it can adapt to tooling of different sizes and be compatible with batch production of multiple products.

[0008] Optionally, the plurality of processing lines are divided into cell pretreatment lines, stacking lines, welding lines and unloading lines according to their functions;

[0009] The cell pretreatment line is used for feeding and pretreating the cells;

[0010] The stacking line is used for stacking the cells after pretreatment with the battery end plate to form a battery stacking module;

[0011] The welding line is used for welding the busbar on the battery stacking module to form a battery module;

[0012] The unloading line is used for unloading the battery module.

[0013] Optionally, the number of the speed-up chains arranged by the conveying unit can be divided into a first conveying unit and a second conveying unit;

[0014] The first conveying unit is arranged with one speed-up chain, which is a second speed-up chain;

[0015] The second conveying unit is arranged with two speed-up chains, which are a first speed-up chain and a second speed-up chain.

[0016] Optionally, the battery cell has a first surface and a second surface arranged oppositely and used for adhesive application; the pretreatment of the battery cell includes adhesive application of the battery cell;

[0017] The battery cell pretreatment line includes a battery cell on-line work station and a battery cell adhesive application work station; the battery cell on-line work station is arranged with the second conveying unit, and the battery cell adhesive application work station is arranged with the first conveying unit or the second conveying unit;

[0018] The first speed-up chain of the battery cell on-line work station is used for conveying a material frame used for carrying battery cells as a tooling piece, and the second speed-up chain of the battery cell on-line work station is used for conveying a first carrier plate as a tooling piece; the battery cell on-line work station is used for transferring the battery cells on the material frame to the first carrier plate to realize on-line work;

[0019] The second speed-up chain of the battery cell on-line work station can be arranged in butt joint with the second speed-up chain of the battery cell adhesive application work station, so that the first carrier plate can be conveyed from the battery cell on-line work station to the battery cell adhesive application work station;

[0020] The battery cell adhesive application work station is used for applying adhesive to the first surface or the second surface of the battery cells on the first carrier plate of the battery cell adhesive application work station;

[0021] When the first surface of the battery cell is applied with adhesive, a first adhesive-applied battery cell is formed; when the second surface of the battery cell is applied with adhesive, a second adhesive-applied battery cell is formed.

[0022] Optionally, the battery cell adhesive application work station includes a first adhesive application work station and a second adhesive application work station; the first adhesive application work station is arranged with the first conveying unit or the second conveying unit, and the second adhesive application work station is arranged with the first conveying unit or the second conveying unit;

[0023] The second speed-up chain of the battery cell on-line work station can be arranged in butt joint with the second speed-up chain of the first adhesive application work station and the second speed-up chain of the second adhesive application work station in sequence, so that the first carrier plate can be conveyed from the battery cell on-line work station to the first adhesive application work station and the second adhesive application work station in sequence;

[0024] The first adhesive application station is used to apply adhesive to the first surface of a portion of the battery cell located on the first carrier plate at the first adhesive application station to form the first adhesive-applied battery cell.

[0025] The second adhesive application station is used to apply adhesive to the second surface of the other cells located on the first carrier plate of the second adhesive application station to form the second adhesive-applied cell.

[0026] Optionally, the first carrier plate is provided with a first conveyor column and a second conveyor column;

[0027] The cell loading station is used to transfer some of the cells on the material frame to the first conveyor column of the first carrier plate, and to transfer some of the cells on the material frame to the second conveyor column of the first carrier plate, thereby realizing the loading;

[0028] The first adhesive application station is used to apply adhesive to the first surface of the battery cell on the first conveyor column of the first carrier plate located at the first adhesive application station, and the second adhesive application station is used to apply adhesive to the second surface of the battery cell on the second conveyor column of the first carrier plate located at the second adhesive application station.

[0029] Optionally, the pretreatment of the battery cell also includes battery cell inspection and battery cell cleaning;

[0030] The cell pretreatment line also includes a cell testing station and a cell cleaning station. The cell testing station is equipped with either the primary conveyor or the secondary conveyor, and the cell cleaning station is equipped with either the primary conveyor or the secondary conveyor.

[0031] The second-speed chain at the cell loading station, the second-speed chain at the cell testing station, the second-speed chain at the cell cleaning station, and the second-speed chain at the cell adhesive application station are sequentially connected and arranged so that the first carrier board can be transported from the cell loading station to the cell testing station and the cell cleaning station to the cell adhesive application station.

[0032] The cell testing station is used to perform open-circuit voltage testing and / or AC internal resistance testing on the cells located on the first carrier board of the cell testing station.

[0033] The cell cleaning station is used to perform plasma cleaning on the qualified cells located on the first carrier board of the cell cleaning station.

[0034] Optionally, the stacking line includes a stacking station, and the stacking station is equipped with the secondary conveyor.

[0035] The first speed chain of the stacking station is used to transport the second carrier plate as a tooling component. The second speed chain of the stacking station is connected to the second speed chain of the cell bonding station, so that the first carrier plate can be transported from the cell bonding station to the stacking station.

[0036] The stacking station is used to place the battery end plate on the second carrier plate, and to transfer the battery cells located on the first carrier plate at the stacking station to the second carrier plate for stacking with the battery end plate on the second carrier plate to form a battery stacking module.

[0037] Optionally, the battery end plate is divided into an adhesive end plate and an unadhesive end plate according to whether its surface is covered with adhesive. The adhesive end plate is a battery end plate with adhesive on one side of its surface, and the unadhesive end plate is a battery end plate without adhesive.

[0038] The stacking station is used to place an adhesive end plate and an unadhesive end plate on the second carrier plate located at the stacking station, and to transfer the battery cells located on the same first carrier plate at the stacking station to the same second carrier plate and stack them with the adhesive end plate and the unadhesive end plate on the second carrier plate to form the battery stacking module.

[0039] Optionally, at the stacking station, a plurality of first adhesive-coated battery cells and a plurality of second adhesive-coated battery cells are placed on the same first carrier plate; on the same first carrier plate, the number of first adhesive-coated battery cells is the same as the number of second adhesive-coated battery cells.

[0040] The battery stacking module includes an adhesive end plate, an unadhesive end plate, and a plurality of cell groups consisting of the first adhesive-coated cell and the second adhesive-coated cell stacked between the adhesive end plate and the unadhesive end plate.

[0041] In the same battery cell assembly, the first surface of the first adhesive-coated battery cell is bonded to the first surface of the second adhesive-coated battery cell;

[0042] When the battery stacking module has one cell group, the second surface of the first glued cell is attached to the glued surface of the glued end plate, and the second surface of the second glued cell is attached to the un-glueed end plate.

[0043] When multiple cell groups are provided in the battery stacking module, between two adjacent cell groups, the second surface of the second adhesive-coated cell of one cell group is bonded to the second surface of the first adhesive-coated cell of another cell group; among the multiple cell groups, the second surface of the first adhesive-coated cell located at the outermost edge is bonded to the adhesive surface of the adhesive end plate, and the second surface of the second adhesive-coated cell located at the outermost edge is bonded to the unadhesive end plate.

[0044] Optionally, the stacking line further includes a steel strip feeding station, wherein the steel strip feeding station is equipped with a second speed-multiplying chain;

[0045] The first speed chain of the stacking station can be connected to the second speed chain of the steel strip station, so that the second carrier plate can be transported from the stacking station to the steel strip station.

[0046] The steel strip mounting station is used to mount steel strips onto the battery stacking module located on the second carrier plate at the steel strip mounting station.

[0047] Optionally, the stacking station is further used to place the first steel strip on a second carrier plate located at the stacking station;

[0048] The steel strip mounting station is used to place the second steel strip on the second carrier plate located at the steel strip mounting station, and to mount the two steel strips located on the second carrier plate at the steel strip mounting station onto the battery stacking module on the second carrier plate.

[0049] Optionally, the stacking line further includes a module alignment station, wherein the module alignment station is equipped with the secondary conveyor unit;

[0050] The first speed chain of the module centering station is connected to the first speed chain of the stacking station, so that the second carrier board can be transported from the stacking station to the module centering station.

[0051] The frame of the secondary conveyor at the module centering station is equipped with a first translation mechanism. The first translation mechanism is used to transport the second carrier plate located on the first double-speed chain at the module centering station to the second double-speed chain at the module centering station.

[0052] The second speed chain at the module centering station is connected to the second speed chain at the steel strip assembly station, so that the second carrier plate can be transported from the module centering station to the steel strip assembly station.

[0053] Optionally, the welding line includes a busbar installation station and a laser welding station, wherein the laser welding station is equipped with the secondary conveyor and the busbar installation station is equipped with the second speed-multiplying chain.

[0054] The front end of the second speed chain at the busbar installation station can be connected to the first speed chain at the stacking station, and the rear end of the second speed chain at the busbar installation station can be connected to the first speed chain and / or the second speed chain at the laser welding station, so that the second carrier plate can be sequentially transported from the stacking station to the busbar installation station and the laser welding station.

[0055] The busbar installation station is used to install the battery stacking module on the second carrier plate located at the busbar installation station;

[0056] The laser welding station is used to perform laser welding on the battery stack module and the busbar on the second carrier plate located at the laser welding station to form the battery module.

[0057] Optionally, the welding line further includes a coding and addressing station, which is equipped with either the primary conveyor or the secondary conveyor.

[0058] The first speed chain of the stacking station can be sequentially connected to the second speed chain of the marking and addressing station and the second speed chain of the busbar installation station, so that the second carrier board can be transported from the stacking station to the busbar installation station via the marking and addressing station.

[0059] The coding and addressing station is used to bind a preset module code to the cell code of the battery stacking module located on the second carrier board of the coding and addressing station, and to engrave the preset module code on the battery stacking module bound to it; it is also used to perform laser cleaning on the cell terminals of the battery stacking module located on the second carrier board of the coding and addressing station; and it is also used to confirm the position of the cell terminals of the battery stacking module located on the second carrier board of the coding and addressing station.

[0060] Optionally, the welding line further includes a module dispensing station, which is equipped with either the primary conveyor or the secondary conveyor.

[0061] The second speed chain of the module dispensing station is connected between the second speed chain of the coding addressing station and the second speed chain of the busbar installation station, so that the second carrier board can be transported from the coding addressing station to the busbar installation station via the module dispensing station;

[0062] The module dispensing station is used to apply adhesive between each pair of adjacent cells of the battery stack module located on the second carrier plate of the module dispensing station.

[0063] Optionally, the welding line further includes a post-weld cleaning station, a post-weld inspection station, and a post-weld testing station. The post-weld cleaning station is equipped with either the primary conveyor or the secondary conveyor. The post-weld inspection station is equipped with either the primary conveyor or the secondary conveyor. The post-weld testing station is equipped with either the primary conveyor or the secondary conveyor.

[0064] The first and / or second speed chains of the laser welding station for conveying the second carrier plate can be sequentially connected to the second speed chains of the post-weld cleaning station, the post-weld inspection station, and the post-weld testing station, so that the second carrier plate can be sequentially conveyed from the laser welding station to the post-weld cleaning station, the post-weld inspection station, and the post-weld testing station.

[0065] The post-weld cleaning station is used to clean the surface of the battery module on the second carrier plate located at the post-weld cleaning station;

[0066] The post-weld inspection station is used to inspect the welding status and PIN pins of the battery module on the second carrier plate located at the post-weld inspection station;

[0067] The post-weld testing station is used to test the voltage of the battery module on the second carrier plate located at the post-weld testing station.

[0068] Optionally, a second translation mechanism is provided between the rear end of the second speed chain of the busbar installation station and the laser welding station. The second translation mechanism is used to transport the second carrier plate on the second speed chain of the busbar installation station to the first speed chain and / or the second speed chain of the laser welding station.

[0069] A third translation mechanism is provided between the second speed chain of the post-weld cleaning station and the laser welding station. The third translation mechanism is used to transport the second carrier plate on the first speed chain and / or the second speed chain of the laser welding station to the second speed chain of the post-weld cleaning station.

[0070] Optionally, the unloading line includes a coding station and a weighing unloading station. The coding station is equipped with a second speed-multiplying chain, and the weighing unloading station is equipped with either the primary conveyor or the secondary conveyor.

[0071] The first and / or second speed chains that connect to the second speed chains at the welding station and the busbar installation station can be sequentially connected to the second speed chains at the marking station and the weighing and unloading station, so that the second carrier plate can be sequentially transported from the welding station to the marking station and the weighing and unloading station.

[0072] The coding station is used to install a protective cover and barcode on the battery module located on the second carrier plate at the coding station.

[0073] The weighing and unloading station is used to scan and confirm the battery module located on the second carrier plate at the weighing and unloading station, and then weigh and unload it. Attached Figure Description

[0074] Figure 1 This is a schematic diagram of a battery module production line provided in an embodiment of the present invention;

[0075] Figure 2 yes Figure 1 Schematic diagram of the cell pretreatment line;

[0076] Figure 3 yes Figure 1 A schematic diagram of the stacked lines;

[0077] Figure 4 yes Figure 1 Schematic diagram of the welding line;

[0078] Figure 5 yes Figure 1 Schematic diagram of the feed line;

[0079] Figure 6 This is a process flow diagram of a battery module production line provided in an embodiment of the present invention.

[0080] The reference numerals in the accompanying drawings are as follows:

[0081] 100. Battery cell pretreatment line; 101. Battery cell loading station; 102. Battery cell inspection station; 103. Battery cell cleaning station; 104. First adhesive application station; 105. Second adhesive application station; 106. Battery cell receiving station; 107. Recycling and replenishment platform; 108. Material frame recycling mechanism; 109. First carrier board loading mechanism;

[0082] 200. Stacking line; 201. Stacking station; 202. Module centering station; 203. Steel strip assembly station; 204. First translation mechanism; 205. First carrier plate unloading mechanism; 206. Second carrier plate loading mechanism;

[0083] 300. Welding line; 301. Marking and addressing station; 302. Module dispensing station; 303. Busbar installation station; 304. Laser welding station; 305. Post-weld cleaning station; 306. Post-weld inspection station; 307. Post-weld testing station; 308. Second translation mechanism; 309. Third translation mechanism;

[0084] 400. Unloading line; 401. Coding station; 402. Weighing and unloading station;

[0085] 1. Conveyor unit; 1a. Primary conveyor unit; 1b. Secondary conveyor unit; 11. Frame; 12. First double-speed chain; 13. Second double-speed chain;

[0086] 2. Battery module; 21. Battery cell; 22. Battery end plate;

[0087] 3. Material frame; 4. First carrier plate; 5. Second carrier plate. Detailed Implementation

[0088] To make the technical problems solved, the technical solutions, and the beneficial effects of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0089] like Figures 1 to 6 As shown, the battery module production line provided in this embodiment of the invention includes multiple processing lines, each of which is equipped with a conveyor 1. The conveyor 1 includes a frame 11 and at least one double-speed chain mounted on the frame 11. The spacing between the two chain components of the double-speed chain is adjustable.

[0090] The double-speed chain is used to transport tooling parts.

[0091] At least some of the speed-multiplying chains in the processing lines can be sequentially connected.

[0092] The battery module production line provided in this embodiment of the invention allows each processing line to be equipped with one or more conveyor units 1 as needed, giving the battery module production line a uniform appearance and an overall aesthetically pleasing design. Furthermore, since the spacing between the two chain components of each double-speed chain on the conveyor unit 1 is adjustable, it can accommodate tooling of different sizes and is compatible with the batch production of multiple products.

[0093] In one embodiment, such as Figure 1 As shown, the multiple processing lines are divided into a cell pretreatment line 100, a stacking line 200, a welding line 300, and a blanking line 400 according to their functions.

[0094] The cell pretreatment line 100 is used for feeding and pretreatment of the cells 21.

[0095] The stacking line 200 is used to stack the pre-processed battery cells 21 with the battery end plate 22 to form a battery stacking module.

[0096] The welding line 300 is used to weld the busbar onto the battery stack module to form the battery module 2.

[0097] The unloading line 400 is used for unloading the battery module 2.

[0098] In one embodiment, such as Figure 1 As shown, the conveyor 1 can be divided into a primary conveyor 1a and a secondary conveyor 1b according to the number of speed-multiplying chains it is equipped with.

[0099] The primary conveyor 1a is equipped with a double-speed chain, which is a second double-speed chain 13.

[0100] The secondary conveyor 1b is equipped with two speed-multiplying chains, namely the first speed-multiplying chain 12 and the second speed-multiplying chain 13.

[0101] In one embodiment, such as Figure 2 and Figure 6 As shown, the battery cell 21 has a first surface and a second surface that are oppositely arranged along the stacking direction and can be used for adhesive application. The pretreatment of the battery cell 21 includes battery cell inspection, battery cell cleaning, and battery cell adhesive application.

[0102] The battery cell pretreatment line 100 includes a battery cell loading station 101, a battery cell inspection station 102, a battery cell cleaning station 103, and a battery cell adhesive application station arranged sequentially. The battery cell loading station 101, the battery cell inspection station 102, the battery cell cleaning station 103, and the battery cell adhesive application station are each equipped with a secondary conveyor unit 1b.

[0103] The first double-speed chain 12 of the cell loading station 101 is used to transport the material frame 3, and the second double-speed chain 13 of the cell loading station 101 is used to transport the first carrier plate 4, which serves as a tooling component to carry the cell 21. The cell loading station 101 is used to transfer the cell 21 on the material frame 3 to the first carrier plate 4 to realize the loading.

[0104] Preferably, a first gripping module may be provided on the frame 11 of the conveyor 1 of the battery cell loading station 101. The first gripping module is used to transfer the battery cell 21 on the material frame 3 to the first carrier plate 4 on the second speed chain 13 to realize the loading of the battery cell 21.

[0105] Furthermore, the first double-speed chain 12 of the cell loading station 101, the first double-speed chain 12 of the cell testing station 102, the first double-speed chain 12 of the cell cleaning station 103, and the first double-speed chain 12 of the cell adhesive application station can be sequentially connected, partially connected, or not connected to each other. This embodiment does not impose any restrictions on this.

[0106] The second-speed chain 13 of the cell loading station 101, the second-speed chain 13 of the cell testing station 102, the second-speed chain 13 of the cell cleaning station 103, and the second-speed chain 13 of the cell adhesive application station are sequentially connected and arranged so that the first carrier board 4 can be transported from the cell loading station 101 to the cell adhesive application station via the cell testing station 102 and the cell cleaning station 103.

[0107] The cell testing station 102 is used to perform open circuit voltage (OCV) testing and / or AC internal resistance (ACR) testing on the cell 21 located on the first carrier board 4 of the cell testing station 102.

[0108] The cell cleaning station 103 is used to perform plasma cleaning on the first and second surfaces of the tested and qualified cell 21 located on the first carrier board 4 of the cell cleaning station 103. Specifically, plasma cleaning heads are respectively arranged on both sides of the first and second surfaces of the cell 21 on the cell cleaning station 103. When the cell cleaning station 103 detects the arrival of the cell 21, the plasma cleaning heads on both sides work simultaneously to achieve cleaning of the first and second surfaces of the cell 21 without stopping the machine.

[0109] The cell adhesive application station is used to apply adhesive to the first or second surface of the cell 21 located on the first carrier plate 4 at the cell adhesive application station.

[0110] When the first surface of the battery cell 21 is coated with adhesive but the second surface is not coated with adhesive, a first coated battery cell is formed. When the first surface of the battery cell 21 is not coated with adhesive but the second surface is coated with adhesive, a second coated battery cell is formed.

[0111] In one specific embodiment, such as Figure 2 As shown, the cell adhesive application station includes a first adhesive application station 104 and a second adhesive application station 105, and both the first adhesive application station 104 and the second adhesive application station 105 are equipped with the secondary conveyor 1b.

[0112] The second speed chain 13 of the cell loading station 101 can be sequentially connected to the second speed chain 13 of the first adhesive application station 104 and the second speed chain 13 of the second adhesive application station 105, so that the first carrier board 4 can be sequentially transported from the cell loading station 101 to the first adhesive application station 104 and the second adhesive application station 105.

[0113] The first adhesive application station 104 is used to apply adhesive to a portion of the first surface of the battery cell 21 located on the first carrier plate 4 of the first adhesive application station 104 to form the first adhesive-applied battery cell.

[0114] The second adhesive application station 105 is used to apply adhesive to a portion of the second surface of the battery cell 21 located on the first carrier plate 4 of the second adhesive application station 105 to form the second adhesive-applied battery cell.

[0115] In other embodiments not shown in the figure, since the first double-speed chain 12 is not used in the cell cleaning station 103, the first adhesive application station 104 and the second adhesive application station 105, the primary conveyor 1a can also be selected for the cell cleaning station 103, the first adhesive application station 104 and the second adhesive application station 105.

[0116] In one embodiment, such as Figure 2 and Figure 3 As shown, the first carrier plate 4 is provided with a first conveying column and a second conveying column. The first conveying column and the second conveying column extend along the conveying direction of the first carrier plate 4, and the first conveying column and the second conveying column are arranged side by side along the conveying direction perpendicular to the first carrier plate 4.

[0117] At this time, the battery cell loading station 101 is used to transfer some of the battery cells 21 on the material frame 3 to the first conveyor column of the first carrier plate 4, and to transfer some of the battery cells 21 on the material frame 3 to the second conveyor column of the first carrier plate 4, thereby realizing material loading. Correspondingly, the first gripping module of the battery cell loading station 101 is used to transfer some of the battery cells 21 on the material frame 3 to the first conveyor column of the first carrier plate 4, and to transfer some of the battery cells 21 to the second conveyor column of the first carrier plate 4.

[0118] Preferably, all the battery cells 21 required for a battery module 2 are placed on a single first carrier plate 4. For example, as shown in the figure, the same battery module 2 requires 8 battery cells 21. Therefore, 8 battery cells 21 are placed on a single first carrier plate 4. These 8 battery cells 21 together with the battery end plate 22 and other structures constitute a battery module 2.

[0119] Furthermore, the first adhesive application station 104 is used to apply adhesive to the first surface of the battery cell 21 on the first conveyor column of the first carrier plate 4 located at the first adhesive application station 104, and the second adhesive application station 105 is used to apply adhesive to the second surface of the battery cell 21 on the second conveyor column of the first carrier plate 4 located at the second adhesive application station 105. It can be understood that after the battery cells have undergone adhesive application at the respective adhesive application stations, all battery cells 21 on the first conveyor column of the first carrier plate 4 will form first adhesive-coated battery cells, and all battery cells 21 on the second conveyor column of the first carrier plate 4 will form second adhesive-coated battery cells.

[0120] In one embodiment, a barcode scanning module is also provided on the frame 11 of the secondary conveyor 1b of the cell loading station 101. The barcode scanning module is used to scan and confirm the cell code of the cell 21 located on the first carrier plate 4 of the cell loading station 101.

[0121] In one embodiment, such as Figure 6As shown, the cell testing station 102 is also equipped with a recycling and replenishment platform 107. The recycling and replenishment platform 107 is used to recycle the unqualified cells 21 located on the first carrier plate 4 of the cell testing station 102, and can replenish the cells 21 located on the first carrier plate 4 of the cell testing station 102 according to the number of recycled cells. Specifically, after the cells 21 are scanned for OCV / ACR testing, the qualified cells 21 will enter the next station, and the unqualified (i.e. NG) cells 21 will be pushed into the NG channel set on one side of the belt by the NG grabber. The NG cells 21 will be manually removed to the waste box. At the same time, the corresponding first carrier plate 4 can be manually replenished according to the number of recycled cells.

[0122] In one embodiment, such as Figure 2 and Figure 6 As shown, the cell pretreatment line 100 also includes a cell receiving station 106 located upstream of the cell loading station 101. The first double-speed chain 12 of the cell receiving station 106 is used to place the material frame 3. The first double-speed chain 12 of the cell receiving station 106 is connected to the first double-speed chain 12 of the cell loading station 101 so that the material frame 3 can be conveyed from the cell receiving station 106 to the cell loading station 101.

[0123] An automatic feeding mechanism can be used at the battery cell receiving station 106. Specifically, a forklift can first place four stacked baskets 3 carrying battery cells 21 to the designated position, and then a depalletizer can separate the entire stack of incoming materials one basket at a time onto the first double-speed chain 12 of the battery cell receiving station 106.

[0124] In one embodiment, such as Figure 2 and Figure 6 As shown, the cell pretreatment line 100 also includes a material frame recycling mechanism 108 disposed between the cell loading station 101 and the cell testing station 102. The material frame recycling mechanism 108 is connected to the first double-speed chain 12 of the cell loading station 101. The material frame recycling mechanism 108 is used to recycle empty material frames 3 (i.e., material frames 3 without cell 21) on the first double-speed chain 12 of the cell loading station 101. The cell receiving station 106 cooperates with the material frame recycling mechanism 108 to realize the loading and unloading of material frames 3.

[0125] Specifically, the material frame recycling mechanism 108 may include a lifting module. When the empty material frame 3 is conveyed to the lifting module by the first double-speed chain 12 of the battery cell online station 101, the lifting module first rises to horizontally dock with the first double-speed chain 12 of the battery cell online station 101. After the empty material frame 3 moves onto the lifting module, the lifting module descends so that the empty material frame 3 can be conveyed to the recycling position, thereby realizing the offline recycling of the empty material frame 3.

[0126] In one embodiment, such as Figure 2 and Figure 6 As shown, the cell pretreatment line 100 also includes a first carrier board loading mechanism 109 disposed upstream of the cell loading station 101. The first carrier board loading mechanism 109 is connected to the second speed chain 13 of the cell loading station 101. The first carrier board loading mechanism 109 can carry multiple stacked first carrier boards 4. By making the second speed chain 13 of the cell loading station 101 horizontally connected to the first carrier board loading mechanism 109, the first carrier boards 4 are loaded onto the second speed chain 13 of the cell loading station 101.

[0127] Specifically, the first carrier board online mechanism 109 may include a lifting module and a pushing module. When the first carrier board 4 needs to be online to the cell online station 101, the stacked first carrier board 4 can be placed on the lifting module. Through the lifting drive of the lifting module, the uppermost first carrier board 4 on the lifting module is aligned with the second double-speed chain 13 of the cell online station 101. Then, the pushing module pushes the uppermost first carrier board 4 onto the second double-speed chain 13 of the cell online station 101 to realize the online of the first carrier board 4.

[0128] In one embodiment, such as Figure 3 and Figure 6 As shown, the stacking line 200 includes a stacking station 201, a module centering station 202 and a steel belt sleeve station 203 arranged in sequence. The stacking station 201 and the module centering station 202 are both equipped with the secondary conveyor 1b, and the steel belt sleeve station 203 is equipped with the second speed-multiplying chain 13.

[0129] The first double-speed chain 12 of the stacking station 201 is used to transport the second carrier plate 5 as a tooling component. The second double-speed chain 13 of the stacking station 201 is connected to the second double-speed chain 13 of the cell adhesive application station, so that the first carrier plate 4 and the pre-processed cell 21 on it can be transported from the cell adhesive application station to the stacking station 201.

[0130] The stacking station 201 is used to place the battery end plate 22 on the second carrier plate 5, and to transfer the battery cell 21 located on the first carrier plate 4 of the stacking station 201 to the second carrier plate 5 to stack with the battery end plate 22 on the second carrier plate 5 to form a battery stacking module.

[0131] In one specific embodiment, such as Figure 3 and Figure 6As shown, the battery end plate 22 is divided into adhesive end plates and non-adhesive end plates according to whether its surface is covered with adhesive. The adhesive end plate is a battery end plate with adhesive on one side of its surface, and the non-adhesive end plate is a battery end plate without adhesive.

[0132] The stacking station 201 is used to place an adhesive end plate and an unadhesive end plate on the second carrier plate 5 located at the stacking station 201, and to transfer the battery cell 21 located on the same first carrier plate 4 located at the stacking station 201 to the same second carrier plate 5 and stack it with the adhesive end plate and the unadhesive end plate on the second carrier plate 5 to form the battery stacking module.

[0133] Furthermore, at the stacking station 201, a plurality of first adhesive-coated battery cells and a plurality of second adhesive-coated battery cells are placed on the same first carrier plate 4, and the number of first adhesive-coated battery cells and the number of second adhesive-coated battery cells are the same on the same first carrier plate 4.

[0134] The battery stacking module includes an adhesive end plate, an unadhesive end plate, and a plurality of cell groups consisting of the first adhesive-coated cell and the second adhesive-coated cell stacked between the adhesive end plate and the unadhesive end plate.

[0135] In the same cell group, the first surface of the first adhesive cell is bonded to the first surface of the second adhesive cell, thereby achieving bonding between cells 21 within the same cell group.

[0136] When the battery stacking module has one cell group, the second surface of the first glued cell is attached to the glued surface of the glued end plate, and the second surface of the second glued cell is attached to the un-glueed end plate, thereby forming the battery stacking module, ensuring that there is an adhesive layer between each cell 21 in the battery stacking module and between each battery end plate 22 and adjacent cells 21.

[0137] When multiple cell groups are provided in the battery stacking module, between two adjacent cell groups, the second surface of the second adhesive-coated cell of one cell group is bonded to the second surface of the first adhesive-coated cell of the other cell group; among the multiple cell groups, the second surface of the first adhesive-coated cell located at the outermost edge is bonded to the adhesive surface of the adhesive end plate, and the second surface of the second adhesive-coated cell located at the outermost edge is bonded to the unadhesive end plate, thereby forming the battery stacking module, ensuring that there is an adhesive layer between each cell 21 in the battery stacking module and between each battery end plate 22 and the adjacent cell 21.

[0138] In one embodiment, such as Figure 3As shown, there are two stacking stations 201, which are arranged side by side along the conveying direction of the battery cell 21 to improve stacking efficiency.

[0139] In one embodiment, a second gripping module is provided on the frame 11 of the second conveyor 1b of the stacking station 201. The second gripping module is used to transfer the battery cell 21 located on the same first carrier plate 4 in the stacking station 201 to the same second carrier plate 5, and stack it with the battery end plate 22 on the second carrier plate 5 to form the battery stacking module. That is, the battery cell 21 on the same first carrier plate 4 will be stacked with the battery end plate 22 on the same second carrier plate 5 to form the battery stacking module.

[0140] The second gripping module is preferably a three-axis robotic arm, which grips the first and second adhesive-coated battery cells onto the second carrier plate 5 according to a pre-set sequence, stacking the battery cells 21. Furthermore, the second gripping module may be equipped with a fixed barcode scanner to scan the battery cells 21 while gripping them and upload the data to the MES.

[0141] In one embodiment, such as Figure 3 and Figure 6 As shown, the first double-speed chain 12 of the stacking station 201 can be docked with the second double-speed chain 13 of the steel strip station 203, so that the second carrier plate 5 can be transported from the stacking station 201 to the steel strip station 203.

[0142] The steel strip fitting station 203 is used to fit steel strips onto the battery stacking modules located on the second carrier plate 5 at the steel strip fitting station 203. Specifically, a lifting mechanism can be provided at the steel strip fitting station 203. After the lifting mechanism is lifted, the second carrier plate 5 and the battery stacking modules on it can be moved together into the extrusion position. The extrusion force is provided by a cylinder to push the battery stacking modules to be extruded to the ideal size according to a set distance or pressure before manual steel strip fitting.

[0143] In other embodiments not shown in the figure, the steel strip station 203 may also be selected from the primary conveyor 1a or the secondary conveyor 1b.

[0144] In one embodiment, such as Figure 3 and Figure 6 As shown, the stacking station 201 is also used to place the first steel strip on the second carrier plate 5 located at the stacking station 201.

[0145] The steel strip mounting station 203 is used to place the second steel strip on the second carrier plate 5 located at the steel strip mounting station 203, and to mount the two steel strips located on the second carrier plate 5 on the battery stacking module on the second carrier plate 5.

[0146] In one embodiment, such as Figure 3 and Figure 6 As shown, the first speed chain 12 of the module alignment station 202 is connected to the first speed chain 12 of the stacking station 201, so that the second carrier plate 5 can be transported from the stacking station 201 to the module alignment station 202.

[0147] A first translation mechanism 204 is provided on the frame 11 of the secondary conveyor 1b of the module alignment station 202. The first translation mechanism 204 is located between the first double-speed chain 12 and the second double-speed chain 13 of the module alignment station 202. The first translation mechanism 204 is used to transport the second carrier plate 5 located on the first double-speed chain 12 of the module alignment station 202 to the second double-speed chain 13 of the module alignment station 202.

[0148] The second speed chain 13 of the module centering station 202 is connected to the second speed chain 13 of the steel strip station 203, so that the second carrier plate 5 can be transported from the module centering station 202 to the steel strip station 203.

[0149] In one embodiment, the stacking line 200 further includes a first carrier board unloading mechanism 205 disposed downstream of the stacking station 201. The first carrier board unloading mechanism 205 is connected to the second speed chain 13 of the stacking station 201. The first carrier board unloading mechanism 205 is used to unload and recycle empty first carrier boards 4 (i.e., first carrier boards 4 without battery cells 21) on the second speed chain 13 of the stacking station 201. The first carrier board loading mechanism 109 cooperates with the first carrier board unloading mechanism 205 to realize the loading and unloading of the first carrier board 4.

[0150] The first carrier plate unloading mechanism 205 may include a lifting module. When the empty first carrier plate 4 is transported to the lifting module by the second speed chain 13 of the stacking station 201, the lifting module first rises to be horizontally connected with the second speed chain 13 of the stacking station 201. After the empty first carrier plate 4 moves onto the lifting module, the lifting module descends so that the empty first carrier plate 4 can be transported to the recycling position, thereby realizing the unloading and recycling of the empty first carrier plate 4.

[0151] In one embodiment, such as Figure 2 and Figure 6As shown, the stacking line 200 also includes a second carrier board loading mechanism 206 disposed upstream of the stacking station 201. The second carrier board loading mechanism 206 is connected to the first speed chain 12 of the stacking station 201. The second carrier board loading mechanism 206 can carry multiple stacked second carrier boards 5. By making the first speed chain 12 of the stacking station 201 horizontally connected to the second carrier board loading mechanism 206, the first carrier board 4 is loaded onto the first speed chain 12 of the stacking station 201.

[0152] Specifically, the second carrier board online mechanism 206 may include a lifting module and a pushing module. When the second carrier board 5 needs to be online to the stacking station 201, the stacked second carrier board 5 can be placed on the lifting module. Through the lifting drive of the lifting module, the uppermost second carrier board 5 on the lifting module is aligned with the first double-speed chain 12 of the stacking station 201. Then, the pushing module pushes the uppermost second carrier board 5 onto the first double-speed chain 12 of the stacking station 201 to realize the online operation of the second carrier board 5.

[0153] In one embodiment, such as Figure 4 and Figure 6 As shown, the welding line 300 includes a coding addressing station 301, a module dispensing station 302, a busbar installation station 303, and a laser welding station 304 arranged sequentially. The coding addressing station 301, the module dispensing station 302, and the laser welding station 304 are all equipped with the primary conveyor 1a, and the busbar installation station 303 is equipped with the second speed-multiplying chain 13.

[0154] The front ends of the second speed chain 13 at the steel strip station 203, the second speed chain 13 at the marking and addressing station 301, the second speed chain 13 at the module dispensing station 302, and the second speed chain 13 at the busbar installation station 303 are sequentially connected. The rear end of the second speed chain 13 at the busbar installation station 303 is connected to the first speed chain 12 and the second speed chain 13 at the laser welding station 304, so that the second carrier board 5 and the battery stacking module on it can be sequentially transported by the stacking line 200 to the marking and addressing station 301, the module dispensing station 302, the busbar installation station 303, and the laser welding station 304.

[0155] The coding and addressing station 301 is used to bind a preset module code to the cell code of each cell 21 of the battery stacking module located on the second carrier board 5 of the coding and addressing station 301, and to engrave the preset module code on the side of the battery stacking module to which it is bound. The preset module code is a module code assigned by the system.

[0156] The marking and addressing station 301 is also used to call the height parameters of each cell 21 terminal. After the laser reads the terminal position and height parameters of the cell 21, it performs laser cleaning on the cell 21 terminals of the battery stacking module located on the second carrier board 5 of the marking and addressing station 301.

[0157] The marking and addressing station 301 is also used to confirm the position of the battery cell 21 terminal of the battery stacking module located on the second carrier plate 5 of the marking and addressing station 301.

[0158] The module dispensing station 302 is used to apply adhesive between each pair of adjacent cells 21 of the battery stacking module located on the second carrier plate 5 of the module dispensing station 302, so as to enhance the strength of the battery stacking module and prevent the cells 21 from being damaged by the blue film when the battery stacking module vibrates, which could lead to short circuits and fires or explosions.

[0159] The busbar mounting station 303 is used to install the battery stacking module on the second carrier plate 5 located at the busbar mounting station 303. The busbar can be used to detect the voltage and temperature of the battery cell 21.

[0160] The laser welding station 304 is used to perform laser welding on the battery stacking module and the busbar located on the second carrier plate 5 of the laser welding station 304 to form the battery module 2. Specifically, a three-axis robot can be used to install welding equipment to weld the installed CCS to the battery stacking module.

[0161] In one embodiment, such as Figure 4 and Figure 6 As shown, there are two marking addressing stations 301. The two marking addressing stations 301 are arranged side by side along the conveying direction of the production line. The two marking addressing stations 301 have the same purpose. Each marking addressing station 301 has the above three functions to improve work efficiency and avoid omissions.

[0162] In other embodiments not shown in the figures, the two marking and addressing stations 301 can also be used to perform different functions. For example, one marking and addressing station 301 is used to bind a preset module code to the cell code of the battery stacking module located on the second carrier plate 5 of the marking and addressing station 301, and to mark the preset module code on the battery stacking module bound to it; it is also used to perform laser cleaning on the cell terminals of the battery stacking module located on the second carrier plate 5 of the marking and addressing station 301. The other marking and addressing station 301 is used to confirm the position of the cell terminals of the battery stacking module located on the second carrier plate 5 of the marking and addressing station 301.

[0163] In other embodiments not shown in the figure, the rear end of the second speed chain 13 of the bus installation station 303 may be connected to only one of the speed chains of the first speed chain 12 or the second speed chain 13 of the laser welding station 304. However, the welding effect will be reduced in this case.

[0164] In other embodiments not shown in the figure, the marking addressing station 301, the module dispensing station 302, and the busbar installation station 303 can also be the secondary conveyor 1b. In this case, the first double-speed chain 12 of the marking addressing station 301, the first double-speed chain 12 of the module dispensing station 302, and the first double-speed chain 12 of the busbar installation station 303 can be sequentially connected, partially connected, or not connected to each other. This embodiment does not impose any restrictions on this. Alternatively, the busbar installation station 303 can be the primary conveyor 1a.

[0165] In one embodiment, the marking and addressing station 301 is further equipped with a CCD positioning mechanism and a ranging mechanism. The CCD positioning mechanism is used to obtain the position of the MARK point and the terminal of each battery cell 21, establish the position coordinate system of each battery cell 21 terminal relative to the MARK point, and upload it to the system for retrieval in subsequent processes. The ranging mechanism is used to obtain the height of each battery cell 21 terminal and establish the height relationship between each battery cell 21 terminal, and upload it to the system for retrieval in subsequent processes.

[0166] In one embodiment, the marking and addressing station 301 is further provided with a moving mechanism, on which the CCD positioning mechanism and the ranging mechanism are mounted to obtain corresponding data for the terminal post and MARK point of each cell 21.

[0167] In one embodiment, such as Figure 4 and Figure 6 As shown, in order to ensure that the second speed chain 13 of the busbar installation station 303 can be connected with the first speed chain 12 and the second speed chain 13 of the laser welding station 304, a second translation mechanism 308 can be provided between the rear end of the second speed chain 13 of the busbar installation station 303 and the laser welding station 304. The second translation mechanism 308 is used to transport the second carrier plate 5 on the second speed chain 13 of the busbar installation station 303 to the first speed chain 12 and / or the second speed chain 13 of the laser welding station 304.

[0168] In one embodiment, such as Figure 4 and Figure 6As shown, the welding line 300 also includes a post-weld cleaning station 305, a post-weld inspection station 306, and a post-weld testing station 307 arranged sequentially. Each of the post-weld cleaning station 305, the post-weld inspection station 306, and the post-weld testing station 307 is equipped with the primary conveyor 1a.

[0169] The first speed chain 12 and / or the second speed chain 13 for conveying the second carrier plate 5 at the laser welding station 304, the second speed chain 13 at the post-weld cleaning station 305, the second speed chain 13 at the post-weld inspection station 306, and the second speed chain 13 at the post-weld testing station 307 are sequentially connected and arranged so that the second carrier plate 5 and the battery module 2 on it can be sequentially conveyed from the laser welding station 304 to the post-weld cleaning station 305, the post-weld inspection station 306, and the post-weld testing station 307.

[0170] The post-weld cleaning station 305 is used to clean the surface of the battery module 2 on the second carrier plate 5 located at the post-weld cleaning station 305.

[0171] The post-weld inspection station 306 is used to inspect the welding status and PIN pins of the battery module 2 located on the second carrier board 5 of the post-weld inspection station 306.

[0172] The welding conditions include whether there are any missed welds, weld bursts, or non-compliant shapes. If an NG (Not Acceptable) condition is found, the post-weld inspection station 306 can automatically alarm and activate the locking function to stop the machine (a password must be entered by a technician to start it); if the inspection is qualified, a green light will illuminate.

[0173] The PIN pin inspection includes checking for any abnormalities in the PIN pins. The post-soldering inspection station 306 can automatically trigger an alarm and activate a locking function to stop the machine (a password must be entered by a technician to restart it); if the inspection is successful, a green light will illuminate.

[0174] The post-weld testing station 307 is used to test the voltage of the battery module 2 located on the third carrier board 6 of the post-weld testing station 307.

[0175] The post-weld testing station 307 is also equipped with a testing mechanism. When the battery module 2 passes through and reaches the testing position on the post-weld testing station 307, the probe of the testing mechanism extends and makes full contact with the positive and negative terminals of the battery module 2. Then, the voltage of the battery module 2 is detected to confirm whether there is any abnormality. OK products flow into the next station normally, while NG products are discharged from the NG outlet and recycled through the conveyor line.

[0176] In other embodiments not shown in the figure, the post-weld cleaning station 305, post-weld inspection station 306, and post-weld testing station 307 may also be selected from the secondary conveyor 1b. In this case, the first double-speed chain 12 of the post-weld cleaning station 305, the first double-speed chain 12 of the post-weld inspection station 306, and the first double-speed chain 12 of the post-weld testing station 307 may be connected sequentially, partially connected, or not connected to each other. This embodiment does not impose any restrictions on this.

[0177] In one embodiment, to ensure that the first speed chain 12 and the second speed chain 13 of the laser welding station 304 can be connected with the second speed chain 13 of the post-weld cleaning station 305, a third translation mechanism 309 can be provided between the second speed chain 13 of the post-weld cleaning station 305 and the laser welding station 304. The third translation mechanism 309 is used to transport the second carrier plate 5 on the first speed chain 12 and / or the second speed chain 13 of the laser welding station 304 to the second speed chain 13 of the post-weld cleaning station 305.

[0178] In one embodiment, each translation mechanism (such as the first translation mechanism 204, the second translation mechanism 308, and the third translation mechanism 309) can achieve the translation function by using a lifting component in conjunction with a conveyor track, or by using a transfer tray, or by using a clamping component.

[0179] In one embodiment, such as Figure 5 and Figure 6 As shown, the unloading line 400 includes a coding station 401 and a weighing and unloading station 402. The coding station 401 is equipped with the second speed-multiplying chain 13, and the weighing and unloading station 402 is equipped with the primary conveyor 1a.

[0180] The second speed chain 13 of the post-weld testing station 307 is sequentially connected to the second speed chain 13 of the marking station 401 and the second speed chain 13 of the weighing and unloading station 402, so that the second carrier plate 5 can be sequentially transported from the welding line 300 to the marking station 401 and the weighing and unloading station 402.

[0181] The coding station 401 is used to install a protective cover and barcode on the battery module 2 located on the second carrier plate 5 of the coding station 401.

[0182] The weighing and unloading station 402 is used to scan and confirm the battery module 2 located on the second carrier plate 5 at the weighing and unloading station 402, and to weigh and unload it. The scanning and confirmation may include barcode scanning and / or preset module code scanning.

[0183] In other embodiments not shown in the figure, the coding station 401 may also be the primary conveyor 1a or the secondary conveyor 1b, and the weighing and unloading station 402 may also be the secondary conveyor 1b.

[0184] In one embodiment, the conveyor 1 may further include a gripping module (used for the aforementioned first gripping module, second gripping module, etc.) mounted on the frame 11 to perform gripping and transfer functions at required workstations (such as the cell assembly workstation 101, stacking workstation 201, etc.). In this case, in addition to transporting tooling components (such as the material frame 3, the first carrier plate 4, and the second carrier plate 5), the conveyor 1 also has the function of gripping and transferring materials (such as the cell 21).

[0185] In one embodiment, the conveyor 1 may further include a third-speed chain and a fourth-speed chain mounted on the frame 11. The spacing between the two chain components of the third-speed chain and the spacing between the two chain components of the fourth-speed chain are adjustable. The third-speed chain is used to recover tooling parts on the first-speed chain 12, and the fourth-speed chain is used to recover tooling parts on the second-speed chain 13.

[0186] In one specific embodiment, the third speed chain can be located below the first speed chain 12, the fourth speed chain can be located below the second speed chain 13, and a first lifting mechanism can be provided between the third speed chain and the first speed chain 12, and a second lifting mechanism can be provided between the fourth speed chain and the second speed chain 13.

[0187] When the first lifting mechanism is raised, it can dock with the first double-speed chain 12, allowing the tooling on the first double-speed chain 12 to be transported to the first lifting mechanism. When the first lifting mechanism is lowered, it can dock with the third double-speed chain, allowing the tooling on the first lifting mechanism to be transported to the third double-speed chain for recycling.

[0188] When the second lifting mechanism rises, it can dock with the second double-speed chain 13, allowing the tooling on the second double-speed chain 13 to be transported to the second lifting mechanism. When the second lifting mechanism descends, it can dock with the fourth double-speed chain, allowing the tooling on the second lifting mechanism to be transported to the fourth double-speed chain for recycling.

[0189] It should be noted that each workstation of each processing line in the above embodiments can be set or deleted according to actual needs, and the deletion of any workstation should not affect the protection scope of the present invention.

[0190] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A battery module production line, characterized in that, The system includes multiple processing lines, each of which is equipped with a conveyor unit. The conveyor unit includes a frame and at least one double-speed chain mounted on the frame. The spacing between the two chain components of the double-speed chain is adjustable. The speed-double chain is used to transport tooling parts; At least some of the speed-multiplying chains in the processing lines can be sequentially connected.

2. The battery module production line according to claim 1, characterized in that, The multiple processing lines are divided into cell pretreatment lines, stacking lines, welding lines and unloading lines according to their functions; The cell pretreatment line is used for cell loading and pretreatment; The stacking line is used to stack the pre-processed cells and battery end plates to form a battery stacking module. The welding line is used to weld the busbar onto the battery stack module to form the battery module; The unloading line is used for unloading the battery module; The conveyor can be divided into primary conveyor and secondary conveyor according to the number of speed-multiplying chains it is equipped with; The primary conveyor is equipped with a speed-multiplying chain, which is a second speed-multiplying chain; The secondary conveyor is equipped with two speed-multiplying chains, namely a first speed-multiplying chain and a second speed-multiplying chain.

3. The battery module production line according to claim 2, characterized in that, The battery cell has a first surface and a second surface that are disposed opposite to each other and can be used for applying adhesive; the pretreatment of the battery cell includes applying adhesive to the battery cell; The battery cell pretreatment line includes a battery cell loading station and a battery cell adhesive application station; the battery cell loading station is equipped with the secondary conveyor, and the battery cell adhesive application station is equipped with either the primary conveyor or the secondary conveyor. The first double-speed chain at the cell loading station is used to transport the material frame, which serves as a tooling component to support the cell, and the second double-speed chain at the cell loading station is used to transport the first carrier plate, which serves as a tooling component; the cell loading station is used to transfer the cell on the material frame to the first carrier plate to achieve loading. The second-speed chain at the cell loading station can be connected to the second-speed chain at the cell bonding station, so that the first carrier board can be transported from the cell loading station to the cell bonding station. The cell adhesive application station is used to apply adhesive to the first or second surface of the cell on the first carrier plate located at the cell adhesive application station. When adhesive is applied to the first surface of the battery cell, a first adhesive-coated battery cell is formed; when adhesive is applied to the second surface of the battery cell, a second adhesive-coated battery cell is formed. The cell adhesive application station includes a first adhesive application station and a second adhesive application station. The first adhesive application station is equipped with either the primary conveyor or the secondary conveyor, and the second adhesive application station is equipped with either the primary conveyor or the secondary conveyor. The second speed chain at the cell assembly station can be sequentially connected to the second speed chain at the first adhesive application station and the second speed chain at the second adhesive application station, so that the first carrier board can be sequentially transported from the cell assembly station to the first adhesive application station and the second adhesive application station. The first adhesive application station is used to apply adhesive to the first surface of a portion of the battery cell located on the first carrier plate at the first adhesive application station to form the first adhesive-applied battery cell. The second adhesive application station is used to apply adhesive to the second surface of the other battery cells located on the first carrier plate of the second adhesive application station to form the second adhesive-applied battery cell; The first carrier plate is provided with a first conveyor column and a second conveyor column; The cell loading station is used to transfer some of the cells on the material frame to the first conveyor column of the first carrier plate, and to transfer some of the cells on the material frame to the second conveyor column of the first carrier plate, thereby realizing the loading; The first adhesive application station is used to apply adhesive to the first surface of the battery cell on the first conveyor column of the first carrier plate located at the first adhesive application station, and the second adhesive application station is used to apply adhesive to the second surface of the battery cell on the second conveyor column of the first carrier plate located at the second adhesive application station.

4. The battery module production line according to claim 3, characterized in that, The pretreatment of the battery cells also includes battery cell testing and battery cell cleaning; The cell pretreatment line also includes a cell testing station and a cell cleaning station. The cell testing station is equipped with either the primary conveyor or the secondary conveyor, and the cell cleaning station is equipped with either the primary conveyor or the secondary conveyor. The second-speed chain at the cell loading station, the second-speed chain at the cell testing station, the second-speed chain at the cell cleaning station, and the second-speed chain at the cell adhesive application station are sequentially connected and arranged so that the first carrier board can be transported from the cell loading station to the cell testing station and the cell cleaning station to the cell adhesive application station. The cell testing station is used to perform open-circuit voltage testing and / or AC internal resistance testing on the cells located on the first carrier board of the cell testing station. The cell cleaning station is used to perform plasma cleaning on the qualified cells located on the first carrier board of the cell cleaning station.

5. The battery module production line according to claim 3, characterized in that, The stacking line includes a stacking station, and the stacking station is equipped with the secondary conveyor unit; The first speed chain of the stacking station is used to transport the second carrier plate as a tooling component. The second speed chain of the stacking station is connected to the second speed chain of the cell bonding station, so that the first carrier plate can be transported from the cell bonding station to the stacking station. The stacking station is used to place the battery end plate on the second carrier plate, and to transfer the battery cells located on the first carrier plate at the stacking station to the second carrier plate to stack with the battery end plate on the second carrier plate to form a battery stacking module. The battery end plates are classified into adhesive end plates and non-adhesive end plates according to whether their surfaces are covered with adhesive. The adhesive end plates are battery end plates with adhesive on one side of their surfaces, and the non-adhesive end plates are battery end plates without adhesive. The stacking station is used to place an adhesive end plate and an unadhesive end plate on the second carrier plate located at the stacking station, and to transfer the battery cells located on the same first carrier plate at the stacking station to the same second carrier plate and stack them with the adhesive end plate and the unadhesive end plate on the second carrier plate to form the battery stacking module. At the stacking station, a plurality of first adhesive-coated battery cells and a plurality of second adhesive-coated battery cells are placed on the same first carrier plate; on the same first carrier plate, the number of first adhesive-coated battery cells is the same as the number of second adhesive-coated battery cells. The battery stacking module includes an adhesive end plate, an unadhesive end plate, and a plurality of cell groups consisting of the first adhesive-coated cell and the second adhesive-coated cell stacked between the adhesive end plate and the unadhesive end plate. In the same battery cell assembly, the first surface of the first adhesive-coated battery cell is bonded to the first surface of the second adhesive-coated battery cell; When the battery stacking module has one cell group, the second surface of the first glued cell is attached to the glued surface of the glued end plate, and the second surface of the second glued cell is attached to the un-glueed end plate. When multiple cell groups are provided in the battery stacking module, between two adjacent cell groups, the second surface of the second adhesive-coated cell of one cell group is bonded to the second surface of the first adhesive-coated cell of another cell group; among the multiple cell groups, the second surface of the first adhesive-coated cell located at the outermost edge is bonded to the adhesive surface of the adhesive end plate, and the second surface of the second adhesive-coated cell located at the outermost edge is bonded to the unadhesive end plate.

6. The battery module production line according to claim 5, characterized in that, The stacking line also includes a steel strip feeding station, which is equipped with a second speed-multiplying chain. The first speed chain of the stacking station can be connected to the second speed chain of the steel strip station, so that the second carrier plate can be transported from the stacking station to the steel strip station. The steel strip sleeve station is used to sleeve steel strips on the battery stacking module located on the second carrier plate at the steel strip sleeve station. The stacking station is also used to place the first steel strip on the second carrier plate located at the stacking station; The steel strip mounting station is used to place the second steel strip on the second carrier plate located at the steel strip mounting station, and to mount the two steel strips located on the second carrier plate at the steel strip mounting station onto the battery stacking module on the second carrier plate.

7. The battery module production line according to claim 6, characterized in that, The stacking line also includes a module alignment station, which is equipped with the secondary conveyor unit; The first speed chain of the module centering station is connected to the first speed chain of the stacking station, so that the second carrier board can be transported from the stacking station to the module centering station. The frame of the secondary conveyor at the module centering station is equipped with a first translation mechanism. The first translation mechanism is used to transport the second carrier plate located on the first double-speed chain at the module centering station to the second double-speed chain at the module centering station. The second speed chain at the module centering station is connected to the second speed chain at the steel strip assembly station, so that the second carrier plate can be transported from the module centering station to the steel strip assembly station.

8. The battery module production line according to claim 5, characterized in that, The welding line includes a busbar installation station and a laser welding station. The laser welding station is equipped with the secondary conveyor unit, and the busbar installation station is equipped with the second speed-multiplying chain. The front end of the second speed chain at the busbar installation station can be connected to the first speed chain at the stacking station, and the rear end of the second speed chain at the busbar installation station can be connected to the first speed chain and / or the second speed chain at the laser welding station, so that the second carrier plate can be sequentially transported from the stacking station to the busbar installation station and the laser welding station. The busbar installation station is used to install the battery stacking module on the second carrier plate located at the busbar installation station; The laser welding station is used to perform laser welding on the battery stack module and the busbar on the second carrier plate located at the laser welding station to form the battery module. The welding line also includes a coding and addressing station, which is equipped with either the primary conveyor or the secondary conveyor. The first speed chain of the stacking station can be sequentially connected to the second speed chain of the marking and addressing station and the second speed chain of the busbar installation station, so that the second carrier board can be transported from the stacking station to the busbar installation station via the marking and addressing station. The coding and addressing station is used to bind a preset module code to the cell code of the battery stacking module located on the second carrier board of the coding and addressing station, and to engrave the preset module code on the battery stacking module bound to it; it is also used to perform laser cleaning on the cell terminals of the battery stacking module located on the second carrier board of the coding and addressing station; and it is also used to confirm the position of the cell terminals of the battery stacking module located on the second carrier board of the coding and addressing station. The welding line also includes a post-weld cleaning station, a post-weld inspection station, and a post-weld testing station. The post-weld cleaning station is equipped with either the primary conveyor or the secondary conveyor. The post-weld inspection station is equipped with either the primary conveyor or the secondary conveyor. The post-weld testing station is equipped with either the primary conveyor or the secondary conveyor. The first and / or second speed chains of the laser welding station for conveying the second carrier plate can be sequentially connected to the second speed chains of the post-weld cleaning station, the post-weld inspection station, and the post-weld testing station, so that the second carrier plate can be sequentially conveyed from the laser welding station to the post-weld cleaning station, the post-weld inspection station, and the post-weld testing station. The post-weld cleaning station is used to clean the surface of the battery module on the second carrier plate located at the post-weld cleaning station; The post-weld inspection station is used to inspect the welding status and PIN pins of the battery module on the second carrier plate located at the post-weld inspection station; The post-weld testing station is used to test the voltage of the battery module on the second carrier plate located at the post-weld testing station. A second translation mechanism is provided between the rear end of the second speed chain of the busbar installation station and the laser welding station. The second translation mechanism is used to transport the second carrier plate on the second speed chain of the busbar installation station to the first speed chain and / or the second speed chain of the laser welding station. A third translation mechanism is provided between the second speed chain of the post-weld cleaning station and the laser welding station. The third translation mechanism is used to transport the second carrier plate on the first speed chain and / or the second speed chain of the laser welding station to the second speed chain of the post-weld cleaning station.

9. The battery module production line according to claim 8, characterized in that, The welding line also includes a module dispensing station, which is equipped with either the primary conveyor or the secondary conveyor. The second speed chain of the module dispensing station is connected between the second speed chain of the coding addressing station and the second speed chain of the busbar installation station, so that the second carrier board can be transported from the coding addressing station to the busbar installation station via the module dispensing station; The module dispensing station is used to apply adhesive between each pair of adjacent cells of the battery stack module located on the second carrier plate of the module dispensing station.

10. The battery module production line according to claim 8, characterized in that, The unloading line includes a coding station and a weighing unloading station. The coding station is equipped with a second speed-multiplying chain, and the weighing unloading station is equipped with either the primary conveyor or the secondary conveyor. The first and / or second speed chains that connect to the second speed chains at the welding station and the busbar installation station can be sequentially connected to the second speed chains at the marking station and the weighing and unloading station, so that the second carrier plate can be sequentially transported from the welding station to the marking station and the weighing and unloading station. The coding station is used to install a protective cover and barcode on the battery module located on the second carrier plate at the coding station. The weighing and unloading station is used to scan and confirm the battery module located on the second carrier plate at the weighing and unloading station, and then weigh and unload it.

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