Battery device assembly system and assembly method

Abstract

A battery device assembly system and assembly method, the battery device assembly system is used to assemble a top cover onto the battery device, comprising: a conveying mechanism, configured to convey a plurality of battery devices in groups to a plurality of operating positions of the preset conveying route in sequence along a preset conveying route, wherein the plurality of operating positions include a first operating position and at least one second operating position, and the at least one second operating position is located downstream of the first operating position along the preset conveying route; an top cover transfer mechanism, configured to transfer a plurality of top covers in groups to the first operating position, and respectively place them on a plurality of battery devices that have arrived at the first operating position; a riveting mechanism, configured to fix a plurality of top covers of a plurality of battery devices that have arrived at the first operating position and at least one second operating position by riveting; and an top cover pressing mechanism, configured to press a plurality of top covers that are respectively placed on a plurality of battery devices to assist the rivet installation of the riveting mechanism.

Description

Technical Field

[0001] The present disclosure relates to the field of battery technology, and in particular to an assembly system and an assembly method for a battery device. Background Art

[0002] Rechargeable batteries, also known as secondary batteries, are batteries that can be recharged to activate the active material after the battery is discharged and continue to be used. Rechargeable batteries are widely used in electronic devices such as mobile phones, laptops, battery cars, electric cars, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes and electric tools. The assembly efficiency of batteries is one of the important issues that manufacturers are concerned about. Summary of the invention

[0003] In one aspect of the present disclosure, there is provided a battery device assembly system for assembling an upper cover onto the battery device, comprising:

[0004] A conveying mechanism, configured to convey a plurality of battery devices in groups to a plurality of operating positions of the preset conveying route in sequence along a preset conveying route, wherein the plurality of operating positions include a first operating position and at least one second operating position, wherein the at least one second operating position is located downstream of the first operating position along the preset conveying route;

[0005] an upper cover transfer mechanism, configured to transfer a plurality of upper covers to the first operating position in groups, and place them respectively on the plurality of battery devices that have arrived at the first operating position;

[0006] a riveting mechanism configured to fix the plurality of upper covers of the plurality of battery devices that have reached the first operating position and at least one second operating position by riveting;

[0007] The upper cover pressing mechanism is configured to press the plurality of upper covers respectively placed on the plurality of battery devices to assist the rivet installation of the riveting mechanism.

[0008] In this embodiment, a plurality of battery devices are transported in groups by a conveying mechanism, and a plurality of upper covers are transferred in groups by an upper cover transfer mechanism, so that a plurality of upper covers are placed and riveted at the first operating position, thereby saving the time for transferring and installing the upper covers, improving assembly efficiency, and being conducive to using fewer upper cover transfer and riveting related equipment, thereby saving the production and manufacturing cost of battery device assembly. In addition, the upper covers respectively placed on the plurality of battery devices are pressed by an upper cover pressing mechanism, so that when the riveting mechanism performs rivet installation, the upper covers are not easily misaligned with the battery devices during riveting, thereby reducing the risk of riveting failure or upper cover skewness.

[0009] In some embodiments, the upper cover transfer mechanism includes an upper cover transfer robot and an end picker disposed at the end of the upper cover transfer robot, and the end picker includes:

[0010] a plurality of first mounting plates;

[0011] A plurality of groups of picking mechanisms are respectively arranged on the plurality of first mounting plates and are configured to pick up and release the plurality of upper covers respectively.

[0012] In this embodiment, through the rapid positioning and transfer capabilities of the upper cover transfer robot, the multiple upper covers picked up by the end picker are more quickly transferred and released to the multiple battery devices in the first operating position, which is beneficial to saving time and improving assembly efficiency.

[0013] In some embodiments, the end effector further comprises:

[0014] A plurality of equal-height members are arranged on the same side of each first mounting plate, and are used to limit a plurality of positions of the upper cover to the same height when the picking mechanism picks up the upper cover.

[0015] In this embodiment, considering that some upper covers are relatively thin, they may be partially deformed due to a large picking force when being picked up. Multiple equal-height parts on the same side of the first mounting plate can support multiple positions on the surface of the upper cover, so that multiple positions of the upper cover are restricted to the same height, which can effectively reduce the risk of obvious deformation of the upper cover due to excessive local force when being picked up, thereby affecting the subsequent assembly process.

[0016] In some embodiments, the end effector further comprises:

[0017] A second mounting plate connected to the end of the upper cover transfer robot;

[0018] A lifting mechanism is disposed between the second mounting plate and at least one of the plurality of first mounting plates.

[0019] In this embodiment, the distance between at least one first mounting plate and the second mounting plate is achieved by a lifting mechanism, so that a plurality of upper covers can be picked up or released in groups or individually as needed.

[0020] In some embodiments, the end effector further comprises:

[0021] The distance measuring sensor is arranged on at least one of the plurality of first mounting plates, and is configured to sense the position of the upper cover when picking up the upper cover, and / or to sense the position of the upper cover relative to the battery device when placing the upper cover on the battery device.

[0022] In this embodiment, when picking up the upper cover, the distance sensor can sense the position of the upper cover, and can accurately determine the position of the upper cover relative to the end picker, so as to reduce the risk of crushing the upper cover when picking up. When placing the upper cover on the battery device, the distance sensor can also sense the position of the upper cover relative to the battery device, so as to reduce the risk of crushing the battery device when placing the upper cover.

[0023] In some embodiments, the assembly system further comprises:

[0024] The battery positioning detection mechanism is configured to perform positioning detection on the battery device and the upper cover in the first operating position, so as to guide the placement and riveting fixation of the upper cover relative to the battery device.

[0025] In this embodiment, the upper cover transfer mechanism can more accurately place the upper cover on the battery device so as to accurately perform riveting and fixing, thereby improving assembly efficiency and reducing unnecessary adjustment steps.

[0026] In some embodiments, the battery positioning detection mechanism includes:

[0027] a bracket disposed adjacent to the first operating position;

[0028] A plurality of camera units are arranged on the bracket and located on the upper side of the conveying mechanism, and are configured to take pictures and position the battery device and the upper cover in the first operating position so as to cooperate with the upper cover transfer mechanism and the riveting mechanism to install the upper cover.

[0029] In this embodiment, a plurality of camera units are arranged by a bracket adjacent to the first operating position, and the battery device and the upper cover in the first operating position are photographed and positioned on the upper side of the conveying mechanism, so that more accurate positioning detection can be achieved, thereby cooperating with the upper cover transfer mechanism and the riveting mechanism to perform high-precision upper cover installation, which is beneficial to saving installation time.

[0030] In some embodiments, the multiple camera units are divided into two groups, one group of camera units is configured to photograph and locate the battery device in the first operating position and the front side positioning mark of the upper cover along the conveying direction, and the other group of camera units is configured to photograph and locate the battery device in the first operating position and the rear side positioning mark of the upper cover along the conveying direction.

[0031] In this embodiment, by grouping multiple camera units, two groups of camera units can respectively photograph and locate the front positioning mark and the rear positioning mark of the battery device and the upper cover in the first operating position along the conveying direction, thereby making the positioning of the battery device and the upper cover more accurate and further guiding the high-precision installation of the upper cover.

[0032] In some embodiments, the battery positioning detection mechanism further includes:

[0033] The first driving mechanism is mounted on the bracket and connected to at least one of the plurality of camera units, and is configured to adjust the position of at least one of the plurality of camera units.

[0034] In this embodiment, the position of the camera unit is adjusted by driving the camera unit through the first driving mechanism, so that the position of the camera unit can be adjusted according to different sizes of the upper cover. In this way, when facing the assembly of a larger upper cover, the camera unit can be moved backward by the first driving mechanism to leave an installation space that is convenient for the upper cover to enter, thereby reducing the risk of interference of the camera unit with the transfer and assembly operations of the upper cover.

[0035] In some embodiments, the first driving mechanism comprises:

[0036] A plurality of linear drive elements are mounted on the bracket and are respectively connected to the plurality of camera units, and are configured to respectively drive the plurality of camera units to move forward or backward along a direction parallel to the conveying direction;

[0037] The first linear guide assembly is mounted on the bracket and is configured to linearly guide the movement of the multiple camera units.

[0038] In this embodiment, the camera unit is driven to move forward and backward by a linear drive element, so that the position adjustment of the camera unit is faster, and the first linear guide assembly can cooperate with the linear drive element to enable the camera unit to obtain higher movement accuracy.

[0039] In some embodiments, the upper cover pressing mechanism includes a plurality of groups of extrusion components corresponding to the plurality of upper covers respectively, and each group of extrusion components includes at least two extrusion components.

[0040] In this embodiment, corresponding upper covers are respectively extruded by multiple groups of extrusion assemblies, and different parts of the upper cover are compressed by at least two extrusion assemblies in each group of extrusion assemblies, so that the upper cover can be compressed more reliably while achieving the compression effect on each upper cover.

[0041] In some embodiments, each extrusion assembly comprises:

[0042] An extrusion member, used for extruding the corresponding upper cover downwards;

[0043] A vertical driving element, drivingly connected to the extrusion member, configured to drive the extrusion member to rise or fall in a vertical direction;

[0044] The horizontal driving element is connected to the vertical driving element and is configured to drive the vertical driving element to move horizontally so that the extrusion member moves closer to or farther away from the corresponding upper cover in the horizontal direction.

[0045] In this embodiment, the extrusion member is driven by the horizontal driving element to move closer to or farther away from the corresponding upper cover in the horizontal direction. When the upper cover needs to be pressed, the extrusion member can move closer to the upper cover in the horizontal direction, and when the upper cover is placed, the extrusion member can move away from the corresponding upper cover in the horizontal direction in advance to avoid interfering with the placement of the upper cover. The upper cover can be pressed by the driving action of the vertical driving element, and when the upper cover is placed, the extrusion member can move away from the corresponding upper cover in the vertical direction in advance to avoid interfering with the placement of the upper cover.

[0046] In some embodiments, the plurality of operating positions further include a first cache position and / or a second cache position, the first cache position is located upstream of the first operating position along the preset conveying route, the second cache position is located between the first operating position and the at least one second operating position along the preset conveying route, and the conveying mechanism includes:

[0047] a fast-forward mechanism configured to be connected to a tray conveyed at a first speed, wherein the battery device is carried on the tray;

[0048] Wherein, the fast-forward mechanism is configured to drive the tray to move from the first cache position to the first operating position at a second speed, and / or drive the tray to move from the first operating position to the second cache position at a third speed, and the second speed and the third speed are both greater than the first speed.

[0049] In this embodiment, the extrusion member is driven by the horizontal driving element to move closer to or farther away from the corresponding upper cover in the horizontal direction. When the upper cover needs to be pressed, the extrusion member can move closer to the upper cover in the horizontal direction, and when the upper cover is placed, the extrusion member can move away from the corresponding upper cover in the horizontal direction in advance to avoid interfering with the placement of the upper cover. The upper cover can be pressed by the driving action of the vertical driving element, and when the upper cover is placed, the extrusion member can move away from the corresponding upper cover in the vertical direction in advance to avoid interfering with the placement of the upper cover.

[0050] In some embodiments, the fast forward mechanism comprises:

[0051] A second driving mechanism includes a servo element and a transmission mechanism, wherein the servo element drives the transmission mechanism to drag the tray to move along the preset conveying route; and

[0052] The second linear guide assembly is configured to linearly guide the movement of the tray.

[0053] In this embodiment, the pallet is driven to move by a servo element and a transmission mechanism, so that the conveying speed of the pallet can be increased while achieving precise conveying, and the second linear guide assembly can cooperate with the transmission mechanism to enable the pallet to obtain higher movement accuracy.

[0054] In some embodiments, the riveting mechanism comprises:

[0055] A feeding mechanism including a flexible vibrating plate for separating and orienting the posture of rivets for fixing the upper cover;

[0056] The rivet installation robot is configured to grab the rivets from the feeding mechanism and fix the upper cover to the battery device through the rivets.

[0057] In this embodiment, the rivet installation robot grabs the rivets from the feeding mechanism with a flexible vibration plate, and fixes the upper cover to the battery device through the rivets, so that the rivets can be accurately grabbed and installed, thereby improving the success rate and efficiency of riveting.

[0058] In some embodiments, the feeding mechanism further comprises:

[0059] A rivet positioning platform, comprising at least one movable bearing plate, wherein the bearing plate has rivet reserved positions corresponding to some rivet holes of the upper cover;

[0060] a rivet transfer robot configured to transfer the oriented rivets in the flexible vibration plate to the rivet reserved positions on the carrier plate;

[0061] The rivet positioning detection mechanism is configured to perform positioning detection on the rivets in the flexible vibration plate and / or detect whether the rivets on the bearing plate are in place.

[0062] In this embodiment, in conjunction with the detection of the rivet positioning detection mechanism, the rivet transfer robot grabs the oriented rivets from the flexible vibration plate and transfers them to the reserved rivet positions on the carrier plate for grabbing by the rivet installation robot. In this way, during the riveting and fixing process, rivet positioning, preparation, picking and installation are carried out simultaneously, effectively saving assembly time and improving assembly efficiency.

[0063] In some embodiments, the rivet positioning platform includes a plurality of bearing plates, each having a rivet reserved position corresponding to a rivet hole of different parts of the upper cover.

[0064] In this embodiment, a battery device in a certain operating position needs to be riveted with multiple rivets, and these rivets are divided into multiple groups through the rivet reserved positions of each of the multiple carrier plates, so that the rivet installation robot can perform rivet grabbing and riveting operations in groups. Moreover, the grabbing of the rivet installation robot and the transfer of the rivet transfer robot can be performed synchronously, the rivet installation robot grabs the rivets on one carrier plate, and the rivet transfer robot transfers the rivets in the flexible vibration plate to another carrier plate.

[0065] In some embodiments, the riveting mechanism includes a plurality of groups of the feeding mechanisms and the rivet installation robots, which respectively fix the plurality of upper covers of the plurality of battery devices that have reached a first operating position and at least one second operating position.

[0066] In this embodiment, by setting up multiple groups of feeding mechanisms and the rivet installation robots, all rivets for fixing the upper cover can be divided into multiple groups and riveted at different operating positions. In this way, with the transportation of the conveying mechanism, riveting operations can be performed on different groups of battery devices at various operating positions, thereby saving the assembly cycle of the battery devices and improving the assembly efficiency.

[0067] In one aspect of the present disclosure, there is provided a method for assembling the aforementioned battery device assembly system, comprising:

[0068] By means of the conveying mechanism, a plurality of battery devices are sequentially conveyed to a plurality of operating positions of the preset conveying route along a preset conveying route, wherein the plurality of operating positions include a first operating position and at least one second operating position, and the at least one second operating position is located downstream of the first operating position along the preset conveying route;

[0069] The upper covers are transferred to the first operating position by the upper cover transfer mechanism, and are respectively placed on the plurality of battery devices that have arrived at the first operating position;

[0070] The plurality of upper covers of the plurality of battery devices that have reached the first operating position and at least one second operating position are fixed by riveting through the riveting mechanism.

[0071] In this embodiment, a plurality of battery devices are conveyed in groups by a conveying mechanism, and a plurality of upper covers are transferred in groups by an upper cover transferring mechanism, so that the plurality of upper covers can be placed and riveted at a first operating position, thereby saving the time of transferring and installing the upper covers, improving assembly efficiency, and facilitating the use of fewer upper cover transferring and riveting related equipment, thereby saving the production and manufacturing cost of battery device assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0072] The accompanying drawings, which constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0073] The present disclosure may be more clearly understood from the following detailed description with reference to the accompanying drawings, in which:

[0074] Figure 1 is a schematic structural diagram of some embodiments of an assembly system for a battery device according to the present disclosure;

[0075] Figure 2 is a structural schematic diagram of an upper cover transfer mechanism according to an embodiment of an assembly system for a battery device disclosed herein;

[0076] Figure 3 is a structural schematic diagram of a battery positioning detection mechanism according to an embodiment of an assembly system for a battery device disclosed herein;

[0077] Figure 4 is a structural schematic diagram of an upper cover pressing mechanism according to an embodiment of an assembly system for a battery device disclosed herein;

[0078] Figure 5 is a structural schematic diagram of a fast-forward mechanism according to an embodiment of an assembly system for a battery device disclosed herein;

[0079] Figure 6 is a structural schematic diagram of a riveting mechanism in an embodiment of an assembly system for a battery device according to the present disclosure;

[0080] Figure 7 is a schematic diagram of some embodiments of the assembly method according to the present disclosure.

[0081] It should be understood that the size of each part shown in the accompanying drawings is not drawn according to the actual proportional relationship. In addition, the same or similar reference numerals represent the same or similar components.

[0082] Description of reference numerals:

[0083] 10. conveying mechanism; 11. fast-forward mechanism; 111. second driving mechanism; 111a. servo element; 111b. transmission mechanism; 112. second linear guide assembly;

[0084] 20. Upper cover transfer mechanism; 21. Upper cover transfer robot; 22. End picker; 221. First mounting plate; 222. Picking mechanism; 223. Equal height parts; 224. Second mounting plate; 225. Lifting mechanism; 226. Distance measuring sensor; 23. Upper cover supply mechanism;

[0085] 30. Riveting mechanism; 31. Feeding mechanism; 311. Flexible vibration plate; 312. Rivet positioning platform; 313. Rivet transfer robot; 314. Rivet positioning detection mechanism; 32. Rivet installation robot;

[0086] 40. Battery positioning detection mechanism; 41. Bracket; 42. Camera unit; 43. First driving mechanism; 431. Linear driving element; 432. First linear guide assembly;

[0087] 50. Upper cover clamping mechanism; 51. Extrusion member; 52. Vertical drive element; 53. Horizontal drive element;

[0088] TC, upper cover; BM, battery device; P1, first operating position; Pb1, first cache position; Pb2, second cache position; cd, conveying direction. DETAILED DESCRIPTION

[0089] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the present disclosure and its application or use. The present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present disclosure thorough and complete and to fully express the scope of the present disclosure to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the components and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary and not as limiting.

[0090] The words "first", "second" and similar words used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different parts. The words "include" or "comprise" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0091] In the present disclosure, when a specific device is described as being located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device. When a specific device is described as being connected to other devices, the specific device may be directly connected to the other device without an intermediate device, or may not be directly connected to the other device but have an intermediate device.

[0092] All terms (including technical terms or scientific terms) used in the present disclosure have the same meanings as those understood by ordinary technicians in the field to which the present disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, such as general dictionaries, should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined herein.

[0093] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0094] The battery device mentioned in the embodiments of the present application may include one or more battery cell assemblies. The battery cell assembly may include a plurality of battery cells, and the plurality of battery cells are connected in series, in parallel, or in mixed connection through a busbar component.

[0095] In some embodiments, the battery cell assembly is generally formed by arranging a plurality of battery cells; as an example, the battery cell assembly may be a battery module, which is formed by arranging and fixing a plurality of battery cells to form an independent module. As an example, the battery module may be formed by bundling a plurality of battery cells by a cable tie.

[0096] In some embodiments, the battery device may be a battery pack, which includes a case and one or more battery cell assemblies, wherein the battery cell assemblies are accommodated in the case.

[0097] As an example, the battery cell assembly may be a battery module, and the battery cell assembly may be accommodated in the box by fixing the battery module in the box.

[0098] As an example, the battery cell assembly may also be housed in the case by directly fixing a plurality of battery cells to the case.

[0099] The battery cell can be a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel hydrogen battery, a nickel cadmium battery, a lead storage battery, etc., which is not limited in the embodiments of the present application.

[0100] A battery cell may include an electrode assembly, a shell and an end cap. The shell is used to accommodate the battery cell, and its open end is covered and fixed with the end cap. The electrode assembly may include a first pole piece and a second pole piece with opposite polarities, and also include an isolating member disposed between the first pole piece and the second pole piece. In some embodiments, the first pole piece is a positive pole piece, and the second pole piece is a negative pole piece. In other embodiments, the first pole piece is a negative pole piece, and the second pole piece is a positive pole piece. During the charge and discharge process of the battery cell, active ions (such as lithium ions) are embedded and removed back and forth between the positive pole piece and the negative pole piece. The isolating member is disposed between the positive pole piece and the negative pole piece, which can prevent the positive and negative poles from short-circuiting, while allowing active ions to pass through.

[0101] In some embodiments, the positive electrode sheet may include a positive current collector substrate and a positive active material layer disposed on at least one surface of the positive current collector substrate.

[0102] As an example, the positive electrode current collector substrate has two surfaces facing each other in its thickness direction, and the positive electrode active material layer is disposed on any one or both of the two facing surfaces of the positive electrode current collector substrate.

[0103] As an example, the positive electrode current collector substrate may be a metal foil or a composite current collector. For example, as the metal foil, aluminum or stainless steel treated with silver, stainless steel, copper, aluminum, nickel, carbon electrode, carbon, nickel or titanium, etc. may be used. The composite current collector may include a polymer material base layer and a metal layer. The composite current collector may be formed by placing a metal material (aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy, silver and silver alloy, etc.) on a polymer material substrate (such as a substrate of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.).

[0104] As an example, the positive electrode active material layer may include at least one of the following materials: lithium-containing phosphates, lithium transition metal oxides, and their respective modified compounds. However, the present disclosure is not limited to these materials, and other traditional materials that can be used as positive electrode active material layers of batteries may also be used. These positive electrode active material layers may be used alone or in combination of two or more. Among them, examples of lithium-containing phosphates may include, but are not limited to, at least one of lithium iron phosphate (such as LiFePO4 (also referred to as LFP)), a composite material of lithium iron phosphate and carbon, lithium manganese phosphate (such as LiMnPO4), a composite material of lithium manganese phosphate and carbon, lithium iron manganese phosphate, and a composite material of lithium iron manganese phosphate and carbon. Examples of lithium transition metal oxides may include, but are not limited to, lithium cobalt oxide (such as LiCoO2), lithium nickel oxide (such as LiNiO2), lithium manganese oxide (such as LiMnO2, LiMn2O4), lithium nickel cobalt oxide, lithium manganese cobalt oxide, lithium nickel manganese oxide, lithium nickel cobalt manganese oxide (such as LiNi 1 / 3 Co 1 / 3Mn 1 / 3 O2 (also referred to as NCM 333 )、LiNi 0.5 Co 0.2 Mn 0.3 O2 (also referred to as NCM 523 )、LiNi 0.5 Co 0.25 Mn 0.25 O2 (also referred to as NCM 211 )、LiNi 0.6 Co 0.2 Mn 0.2 O2 (also referred to as NCM 622 )、LiNi 0.8 Co 0.1 Mn 0.1 O2 (also referred to as NCM 811 ), lithium nickel cobalt aluminum oxide (such as LiNi 0.85 Co 0.15 Al 0.05 O2) and its modified compounds, etc.

[0105] In some embodiments, the negative electrode sheet may include a negative current collector substrate.

[0106] As an example, the negative electrode current collector substrate can be a metal foil, a foamed metal or a composite current collector. For example, as a metal foil, aluminum or stainless steel treated with silver, stainless steel, copper, aluminum, nickel, carbon electrode, carbon, nickel or titanium, etc. can be used. The foamed metal can be foamed nickel, foamed copper, foamed aluminum, foamed alloy, or foamed carbon, etc. The composite current collector may include a polymer material base layer and a metal layer. The composite current collector may be formed by placing a metal material (copper, copper alloy, nickel, nickel alloy, titanium, titanium alloy, silver and silver alloy, etc.) on a polymer material substrate (such as a substrate of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.).

[0107] In some embodiments, the negative electrode sheet may include a negative electrode current collector substrate and a negative electrode active material layer disposed on at least one surface of the negative electrode current collector substrate.

[0108] As an example, the negative electrode current collector substrate has two surfaces facing each other in its thickness direction, and the negative electrode active material layer is disposed on any one or both of the two facing surfaces of the negative electrode current collector substrate.

[0109] As an example, the negative electrode active material layer may adopt the negative electrode active material layer for battery cells known in the art. As an example, the negative electrode active material layer may include at least one of the following materials: artificial graphite, natural graphite, soft carbon, hard carbon, silicon-based materials, tin-based materials, lithium titanate, etc. The silicon-based material may be selected from at least one of elemental silicon, silicon oxide compounds, silicon-carbon composites, silicon-nitrogen composites, and silicon alloys. The tin-based material may be selected from at least one of elemental tin, tin oxide compounds, and tin alloys. However, the present disclosure is not limited to these materials, and other traditional materials that can be used as negative electrode active material layers for batteries may also be used. These negative electrode active material layers may be used alone or in combination of two or more.

[0110] In some embodiments, the material of the positive electrode current collector substrate may be aluminum, and the material of the negative electrode current collector substrate may be copper.

[0111] In some embodiments, the separator is a separator. The present disclosure has no particular limitation on the type of separator, and any known porous separator with good chemical stability and mechanical stability can be selected.

[0112] As an example, the main material of the separator can be selected from at least one of glass fiber, non-woven fabric, polyethylene, polypropylene, polyvinylidene fluoride, and ceramic. The separator can be a single-layer film or a multi-layer composite film, without particular limitation. When the separator is a multi-layer composite film, the materials of each layer can be the same or different, without particular limitation. The separator can be a separate component located between the positive electrode sheet and the negative electrode sheet, or it can be located between the positive electrode sheet and the negative electrode sheet and attached to the surface of the positive electrode sheet and / or the surface of the negative electrode sheet.

[0113] In some embodiments, the separator is a solid electrolyte, which is disposed between the positive electrode sheet and the negative electrode sheet and plays the role of transmitting ions and isolating the positive and negative electrodes.

[0114] In some embodiments, the battery cell further includes an electrolyte, which plays a role in conducting ions between the positive and negative electrodes. The present disclosure has no specific restrictions on the type of electrolyte, which can be selected according to needs. The electrolyte can be liquid, gel or solid.

[0115] As an example, the liquid electrolyte includes an electrolyte salt and a solvent.

[0116] In some embodiments, the electrolyte salt can be selected from at least one of lithium hexafluorophosphate, lithium tetrafluoroborate, lithium perchlorate, lithium hexafluoroarsenate, lithium bis(fluorosulfonyl)imide, lithium bis(trifluoromethanesulfonyl)imide, lithium trifluoromethanesulfonate, lithium difluorophosphate, lithium difluorooxalatoborate, lithium dioxalatoborate, lithium difluorodioxalatophosphate, and lithium tetrafluorooxalatophosphate.

[0117] In some embodiments, the solvent can be selected from at least one of ethylene carbonate, propylene carbonate, ethyl methyl carbonate, diethyl carbonate, dimethyl carbonate, dipropyl carbonate, methyl propyl carbonate, ethyl propyl carbonate, butylene carbonate, fluoroethylene carbonate, methyl formate, methyl acetate, ethyl acetate, propyl acetate, methyl propionate, ethyl propionate, propyl propionate, methyl butyrate, ethyl butyrate, 1,4-butyrolactone, cyclopentane, dimethyl sulfone, methyl ethyl sulfone and diethyl sulfone. The solvent can also be selected from ether solvents. Ether solvents can include one or more of ethylene glycol dimethyl ether, ethylene glycol diethyl ether, diethylene glycol dimethyl ether, triethylene glycol dimethyl ether, tetraethylene glycol dimethyl ether, 1,3-dioxolane, tetrahydrofuran, methyltetrahydrofuran, diphenyl ether and crown ether.

[0118] As an example, the gel electrolyte includes a polymer as the electrolyte skeleton network, combined with an ionic liquid-lithium salt.

[0119] As examples, the solid electrolyte includes a polymer solid electrolyte, an inorganic solid electrolyte, and a composite solid electrolyte.

[0120] As an example, the polymer solid electrolyte may be polyether (polyethylene oxide), polysiloxane, polycarbonate, polyacrylonitrile, polyvinylidene fluoride, polymethyl methacrylate, a single ion polymer, polyionic liquid-lithium salt, cellulose, and the like.

[0121] As an example, the inorganic solid electrolyte can be an oxide solid electrolyte (crystalline perovskite, sodium superconducting ion conductor, garnet, amorphous LiPON film), a sulfide solid electrolyte (crystalline lithium superion conductor (lithium germanium phosphosulfide, silver germanium sulfide), amorphous sulfide) and one or more of a halide solid electrolyte, a nitride solid electrolyte and a hydride solid electrolyte.

[0122] As an example, the composite solid electrolyte is formed by adding an inorganic solid electrolyte filler to a polymer solid electrolyte.

[0123] In some embodiments, the electrode assembly includes a main body. The main body may be a main body of a winding structure formed by winding a positive electrode sheet, a negative electrode sheet, and a separator, or a main body of a stacked structure formed by overlapping a positive electrode sheet, a negative electrode sheet, and a separator. One or more positive electrode sheets and negative electrode sheets may be provided respectively. As an example, a plurality of positive electrode sheets and a plurality of negative electrode sheets are alternately provided along the thickness direction of the electrode sheets.

[0124] In some embodiments, the shape of the main body may be cylindrical, flat, or polygonal. The end of the main body may be provided with a first pole ear and a second pole ear. The first pole ear may be formed by cutting or trimming the current collector substrate of the first pole piece, or may be connected to the side of the current collector substrate of the first pole piece by welding. The second pole ear may be formed by cutting or trimming the current collector substrate of the second pole piece, or may be connected to the side of the current collector substrate of the second pole piece by welding.

[0125] For the embodiment in which the first pole piece is a positive pole piece and the second pole piece is a negative pole piece, the first pole piece includes a positive pole piece as a first pole piece, and the second pole piece includes a negative pole piece as a second pole piece. For the embodiment in which the first pole piece is a negative pole piece and the second pole piece is a positive pole piece, the first pole piece includes a negative pole piece as a first pole piece, and the second pole piece includes a positive pole piece as a second pole piece.

[0126] The shell is used to encapsulate the electrode assembly and electrolyte, etc. The shell can be a steel shell, an aluminum shell, a composite metal shell (such as a copper-aluminum composite shell), etc.

[0127] As an example, the battery cell may be a cylindrical battery cell, a prismatic battery cell, a soft-pack battery cell or a battery cell of other shapes. The prismatic battery cell includes a square-shell battery cell, a blade-shaped battery cell, a polygonal battery, such as a hexagonal battery.

[0128] In some related technologies, during the assembly and production of battery modules, the upper cover of the battery module needs to be riveted at a riveting station through the cooperation of multiple devices. In order to meet the high cycle requirements, more equipment needs to be arranged for cooperation, which makes the production cost higher. More equipment takes up more space and has a higher failure rate, which correspondingly makes the production cost higher.

[0129] In view of this, the embodiments of the present disclosure provide a battery device assembly system and assembly method, which can save work cycles and reduce production costs.

[0130] In one aspect of the present disclosure, a battery device assembly system is provided, for assembling an upper cover onto the battery device, comprising:

[0131] A conveying mechanism, configured to convey a plurality of battery devices in groups to a plurality of operating positions of the preset conveying route in sequence along a preset conveying route, wherein the plurality of operating positions include a first operating position and at least one second operating position, wherein the at least one second operating position is located downstream of the first operating position along the preset conveying route;

[0132] an upper cover transfer mechanism, configured to transfer a plurality of upper covers to the first operating position in groups, and place them respectively on the plurality of battery devices that have arrived at the first operating position;

[0133] a riveting mechanism configured to fix the plurality of upper covers of the plurality of battery devices that have reached the first operating position and at least one second operating position by riveting;

[0134] The upper cover pressing mechanism is configured to press the plurality of upper covers respectively placed on the plurality of battery devices to assist the rivet installation of the riveting mechanism.

[0135] In this embodiment, a plurality of battery devices are transported in groups by a conveying mechanism, and a plurality of upper covers are transferred in groups by an upper cover transfer mechanism, so that a plurality of upper covers are placed and riveted at the first operating position, thereby saving the time for transferring and installing the upper covers, improving assembly efficiency, and being conducive to using fewer upper cover transfer and riveting related equipment, thereby saving the production and manufacturing cost of battery device assembly. In addition, the upper covers respectively placed on the plurality of battery devices are pressed by an upper cover pressing mechanism, so that when the riveting mechanism performs rivet installation, the upper covers are not easily misaligned with the battery devices during riveting, thereby reducing the risk of riveting failure or upper cover skewness.

[0136] Figure 1 Schematic diagram of the structure of some embodiments of the battery assembly system according to the present disclosure. Figure 1 The embodiment of the present disclosure provides a battery device assembly system for assembling a top cover TC onto the battery device BM. The assembly system includes: a conveying mechanism 10, a top cover transfer mechanism 20, and a riveting mechanism 30. The conveying mechanism 10 is configured to sequentially convey a plurality of battery devices BM in groups along a preset conveying route to a plurality of operating positions of the preset conveying route, wherein the plurality of operating positions include a first operating position P1 and at least one second operating position, and the at least one second operating position is located downstream of the first operating position P1 along the preset conveying route. The top cover transfer mechanism 20 is configured to transfer a plurality of top covers TC in groups to the first operating position P1, and respectively place them on the plurality of battery devices BM that have arrived at the first operating position P1. The riveting mechanism 30 is configured to fix the plurality of top covers TC to the plurality of battery devices BM that have arrived at the first operating position P1 and at least one second operating position by riveting.

[0137] The conveying mechanism 10 is used to convey a plurality of battery devices BM in groups to a plurality of operating positions of a preset conveying route. Here, conveying in groups means that the battery devices BM to be assembled are divided into at least one group, and each group contains a plurality of battery devices BM. Each group of battery devices BM is conveyed together along the preset conveying route by the conveying mechanism 10. For a plurality of groups of battery devices BM, each group of battery devices BM can be sequentially conveyed to each operating position one by one along the preset conveying route by the conveying mechanism 10.

[0138] A plurality of battery devices BM may be carried on a tray and transported by a conveying mechanism 10. The conveying mechanism 10 may be a belt conveyor, a roller conveyor, a traction conveyor, or the like.

[0139] The preset conveying route refers to the conveying path implemented by the conveying mechanism 10, which can be a straight line, a broken line or a curve. The multiple operating positions of the preset conveying route can be used to implement different operating procedures, such as positioning, riveting, etc., and can also include buffer positions between different operating procedures. Accordingly, when a group of battery devices BM runs to a certain operating position, other operating positions upstream and / or downstream thereof can also have other groups of battery devices BM for assembly work.

[0140] The upper cover transfer mechanism 20 is used to transfer multiple upper covers TC to the first operating position P1 in groups. The upper covers TC here will be assembled with the battery device BM and fixed to the battery device BM by riveting. Transferring in groups means dividing the upper covers TC to be assembled into at least one group, and each group contains multiple upper covers TC. Each group of upper covers TC is transferred from the upper cover transfer mechanism 20 Figure 1 The upper cover supply mechanism 23 picks up the upper covers TC and transfers them to the first operation position P1 in the preset conveying route. The upper covers TC of each group are placed on the battery devices BM that have arrived at the first operation position P1 by the upper cover transfer mechanism 20.

[0141] The riveting of the upper cover TC and the battery device BM can be achieved by multiple rivets, and accordingly, the riveting mechanism 30 can perform riveting and fixing operations at multiple riveting positions on the arrived battery device BM at the first operating position P1 and at least one second operating position. The riveting of the riveting mechanism 30 at the first operating position P1 can enable the upper cover TC to be fixedly connected with the corresponding battery device BM, so that the upper cover TC is not easy to move relative to the battery device BM, so that the positioning and clamping operations of the upper cover TC can be omitted at the second operating position P2.

[0142] According to the number of rivets used to fix the upper cover TC and the battery device BM, one or more second operating positions P2 can be configured so that a suitable number of rivets can be used for riveting and fixing at each second operating position. Figure 1In the embodiment, the preset transmission line may include two second operating positions P21 and P22.

[0143] In this embodiment, a plurality of battery devices BM are conveyed in groups by the conveying mechanism 10, and a plurality of upper covers TC are transferred in groups by the upper cover transferring mechanism 20, so as to place and rivet the plurality of upper covers TC at the first operating position P1, thereby saving the time of transferring and installing the upper covers TC, improving the assembly efficiency, and facilitating the use of fewer upper cover transferring and riveting related equipment, thereby saving the production and manufacturing cost of the battery device assembly.

[0144] Figure 2 Schematic diagram of the structure of the upper cover transfer mechanism in the embodiment of the assembly system of the battery device disclosed in the present invention. Figure 1 and Figure 2 In some embodiments, the upper cover transfer mechanism 20 includes an upper cover transfer robot 21 and an end picker 22 disposed at the end of the upper cover transfer robot 21. The end picker 22 includes: a plurality of first mounting plates 221 and a plurality of groups of picking mechanisms 222. The plurality of groups of picking mechanisms 222 are respectively disposed on the plurality of first mounting plates 221, and are configured to pick up and release the plurality of upper covers TC respectively.

[0145] The upper cover transfer robot can be any robot that can move between the upper cover supply mechanism 23 for supplying the upper cover TC and the first operating position P1. The robot here can be a 6-axis industrial robot, or other types of robots such as a rectangular coordinate robot, a cylindrical coordinate robot, a horizontal multi-joint robot, etc. The end picker 22 is used to pick up and release the upper cover TC. It is set at the end of the upper cover transfer robot 21 and can move and adjust its posture under the drive of the upper cover transfer robot 21.

[0146] The end tool 22 includes a plurality of first mounting plates 221 and a plurality of groups of picking mechanisms 222 respectively arranged on the plurality of first mounting plates 221. Here, each first mounting plate 221 and one or more groups of picking mechanisms 222 arranged thereon can be used to realize group picking and releasing of a plurality of upper covers TC. Figure 2 It can be seen that the end picker 22 includes two first mounting plates 221 and two sets of picking mechanisms 222. The two sets of picking mechanisms 222 correspond to the two first mounting plates 221 one by one, and are used to achieve synchronous picking of two upper covers TC. The two first mounting plates 221 can be arranged parallel to each other so that the two picked upper covers TC are parallel to each other to avoid interference when picking or releasing.

[0147] The picking mechanism 222 can pick up and release the upper cover TC by vacuum, magnetic attraction, mechanical clamping, etc. Figure 2In the embodiment, the picking mechanism 222 may include a plurality of suction cups, which are connected to a vacuum generator and can absorb the surface of the upper cover TC under the action of the vacuum generator.

[0148] In this embodiment, through the rapid positioning and transfer capabilities of the upper cover transfer robot 21, the multiple upper covers TC picked up by the end tool 22 are more quickly transferred and released to the multiple battery devices BM at the first operating position P1, which is beneficial to saving time and improving assembly efficiency.

[0149] refer to Figure 2 In some embodiments, the end tool 22 further includes a plurality of equal height parts 223. The plurality of equal height parts 223 are arranged on the same side of each first mounting plate 221, and are used to limit the plurality of positions of the upper cover TC to the same height when the picking mechanism 222 picks up the upper cover TC.

[0150] The height-conforming member 223 can be set in a cylindrical or rectangular shape and mounted with the first mounting plate 221. The height-conforming member 223 can also be integrally formed with the first mounting plate 221 to form a protruding structure protruding from the surface of the first mounting plate 221. The height-conforming member 223 can be integrated with the pickup mechanism 222, or they can be set at different positions.

[0151] In this embodiment, considering that some upper covers are relatively thin, they may be partially deformed due to a large picking force when being picked up. The multiple equal-height parts 223 on the same side of the first mounting plate 221 can support multiple positions on the surface of the upper cover TC, so that multiple positions of the upper cover TC are restricted to the same height, which can effectively reduce the risk of obvious deformation of the upper cover TC due to excessive local force when being picked up, thereby affecting the subsequent assembly process.

[0152] refer to Figure 2 In some embodiments, the end tool 22 further includes a second mounting plate 224 and a lifting mechanism 225. The second mounting plate 224 is connected to the end of the upper cover transfer robot 21. The lifting mechanism 225 is disposed between the second mounting plate 224 and at least one of the plurality of first mounting plates 221.

[0153] The lifting mechanism 225 can be realized by a lifting structure driven by a cylinder, a motor, etc. The lifting mechanism 225 can adjust the distance between at least one first mounting plate 221 and the second mounting plate 224. For example, the distance between one first mounting plate 221 and the second mounting plate 224 is made farther than the distance between other first mounting plates 221 and the second mounting plate 224, so that the first mounting plate 221 can pick up the corresponding upper cover TC separately. For another example, the distance between multiple second mounting plates and the second mounting plate 224 is adjusted to be consistent, so that multiple first mounting plates 221 can pick up multiple upper covers TC in groups.

[0154] In this embodiment, the distance between at least one first mounting plate 221 and the second mounting plate 224 is achieved by the lifting mechanism 225, so that the plurality of upper covers TC can be picked up or released in groups or individually as needed.

[0155] refer to Figure 2 In some embodiments, the end tool 22 further includes a distance measuring sensor 226. The distance measuring sensor 226 is disposed on at least one of the plurality of first mounting plates 221, and is configured to sense the position of the upper cover TC when picking up the upper cover TC, and / or sense the position of the upper cover TC relative to the battery device BM when placing the upper cover TC on the battery device BM.

[0156] The distance sensor 226 can be a sensor that can measure distance, such as an ultrasonic sensor, an infrared sensor, etc. When picking up the upper cover TC, the distance sensor 226 can sense the position of the upper cover TC, and can accurately determine the position of the upper cover TC relative to the end picker 22, so as to reduce the risk of crushing the upper cover TC when picking up. When placing the upper cover TC on the battery device BM, the distance sensor 226 can also sense the position of the upper cover TC relative to the battery device BM, so as to reduce the risk of crushing the battery device BM when placing the upper cover TC.

[0157] refer to Figure 1 In some embodiments, the assembly system further includes a battery positioning detection mechanism 40. The battery positioning detection mechanism 40 is configured to perform positioning detection on the battery device BM and the upper cover TC in the first operating position P1, so as to guide the placement and riveting fixation of the upper cover TC relative to the battery device BM.

[0158] The battery positioning detection mechanism 40 can realize the positioning of the battery device BM and the upper cover TC by optical detection, ultrasonic detection, laser detection, etc. In this way, the upper cover transfer mechanism 20 can more accurately place the upper cover TC on the battery device BM, so as to accurately perform riveting and fixing, improve assembly efficiency, and reduce unnecessary adjustment links.

[0159] Figure 3 Schematic diagram of the structure of the battery positioning detection mechanism in the embodiment of the assembly system of the battery device disclosed in the present invention. Figure 1 and Figure 3In some embodiments, the battery positioning detection mechanism 40 includes: a bracket 41 and a plurality of camera units 42. The bracket 41 is disposed adjacent to the first operating position P1. The plurality of camera units 42 are disposed on the bracket 41 and located on the upper side of the conveying mechanism 10, and are configured to take pictures and position the battery device BM and the upper cover TC at the first operating position P1, so as to cooperate with the upper cover transfer mechanism 20 and the riveting mechanism 30 to install the upper cover TC.

[0160] The support 41 may be located at the side of the conveying mechanism 10 or straddle the upper side of the conveying mechanism 10 to be adjacent to the first operating position P1. A plurality of camera units 42 are provided on the support 41 to detect the positioning of the battery device BM and the upper cover TC whose lower side reaches the first operating position P1 at a higher position. The plurality of camera units 42 may detect the positioning of a plurality of battery devices BM with or without the upper cover TC placed.

[0161] The camera unit 42 may use a charge-coupled device (CCD) or a complementary metal-oxide-semiconductor (CMOS) sensor. The camera unit 42 may also include a light source to ensure the quality of the image obtained. The camera unit 42 may process the image data after taking the photo so that other mechanisms in the assembly system can refer to it to assemble the upper cover.

[0162] In this embodiment, a plurality of camera units 42 are arranged by a bracket adjacent to the first operating position P1, and the battery device BM and the upper cover TC at the first operating position P1 are photographed and positioned on the upper side of the conveying mechanism 10, so that more accurate positioning detection can be achieved, thereby cooperating with the upper cover transfer mechanism 20 and the riveting mechanism 30 to perform high-precision installation of the upper cover TC, which is beneficial to saving installation time.

[0163] In some embodiments, the multiple camera units 42 are divided into two groups, wherein one group of camera units 42 is configured to photograph and locate the front side positioning marks of the battery device BM and the upper cover TC in the first operating position P1 along the conveying direction cd, and the other group of camera units 42 is configured to photograph and locate the rear side positioning marks of the battery device BM and the upper cover TC in the first operating position P1 along the conveying direction cd.

[0164] The upper cover TC is riveted and fixed to the battery device BM by rivets at multiple positions. The camera units 42 are divided into two groups, each of which may include multiple camera units 42 corresponding to multiple upper covers TC and multiple battery devices BM. In this way, the two groups of camera units 42 can not only realize the positioning detection of multiple upper covers TC and multiple battery devices BM, but also can perform positioning detection on the front side positioning mark and the rear side positioning mark of the upper cover TC and the battery device BM along the conveying direction cd. The positioning mark here can be a rivet reserved hole, or it can be other structures or marks.

[0165] exist Figure 3 In the embodiment, four camera units 42 are provided on the bracket 41. The four camera units 42 are divided into two groups along the conveying direction cd, so as to realize the camera positioning of the front side rivet reserved holes and the rear side rivet reserved holes of the two upper covers TC and the two battery devices BM.

[0166] In this embodiment, by grouping a plurality of camera units 42, two groups of camera units 42 can respectively photograph and locate the front positioning mark and the rear positioning mark of the battery device BM and the upper cover TC in the first operating position P1 along the conveying direction cd, thereby making the positioning of the battery device BM and the upper cover TC more accurate and further guiding the high-precision installation of the upper cover.

[0167] refer to Figure 3 In some embodiments, the battery positioning detection mechanism 40 further includes a first driving mechanism 43. The first driving mechanism 43 is mounted on the bracket 41 and connected to at least one of the plurality of camera units 42, and is configured to adjust the position of at least one of the plurality of camera units 42.

[0168] The first driving mechanism 43 can adjust the position of the camera unit 42 relative to the bracket 41, for example, in a direction parallel to the conveying direction, in a direction perpendicular to the conveying direction, or in a vertical direction. The first driving mechanism 43 can be driven by a cylinder, a motor, or the like.

[0169] In this embodiment, the position of the camera unit 42 is adjusted by driving the camera unit 42 through the first driving mechanism 43, so that the position of the camera unit 42 can be adjusted according to the different sizes of the upper cover TC. In this way, when facing the assembly of a larger-sized upper cover TC, the camera unit 42 can be moved backward by the first driving mechanism 43 to leave an installation space that is convenient for the upper cover to enter, thereby reducing the risk of interference of the camera unit 42 with the transfer and assembly operations of the upper cover TC.

[0170] refer to Figure 3In some embodiments, the first driving mechanism 43 includes a plurality of linear driving elements 431 and a first linear guide assembly 432. The plurality of linear driving elements 431 are mounted on the bracket 41 and are respectively connected to the plurality of camera units 42, and are configured to respectively drive the plurality of camera units 42 to move forward or backward in a direction parallel to the conveying direction cd. The first linear guide assembly 432 is mounted on the bracket 41 and is configured to linearly guide the movement of the plurality of camera units 42.

[0171] The linear drive element 431 can be implemented by a cylinder, or by a motor with a ball screw transmission or other structures. The first linear guide assembly 432 can be implemented by a linear guide rail with a slider, or by a guide rod with a slider or other structures.

[0172] In this embodiment, the camera unit 42 is driven to move forward and backward by the linear drive element 431, so that the position adjustment of the camera unit 42 is faster, and the first linear guide component 432 can cooperate with the linear drive element 431 to enable the camera unit 42 to obtain higher movement accuracy.

[0173] refer to Figure 1 In some embodiments, the assembly system further includes an upper cover pressing mechanism 50. The upper cover pressing mechanism 50 is configured to press the plurality of upper covers TC respectively placed on the plurality of battery devices BM to assist the rivet installation of the riveting mechanism 30.

[0174] The upper cover pressing mechanism 50 can be arranged near the first operating position P1 so as to press the upper cover TC when the upper cover TC is placed on the battery device BM to prevent the upper cover TC from shifting with the battery device BM during riveting. The upper cover pressing mechanism 50 can also be arranged at other operating positions as needed to assist the rivet installation of the riveting mechanism 30.

[0175] In this embodiment, the upper covers TC respectively placed on the plurality of battery devices BM are pressed by the upper cover pressing mechanism 50, so that the upper covers TC are not easily displaced from the battery devices BM during riveting when the riveting mechanism 30 performs rivet installation, thereby reducing the risk of riveting failure or tilting of the upper covers TC.

[0176] Figure 4 Schematic diagram of the structure of the upper cover pressing mechanism in the embodiment of the assembly system of the battery device disclosed in the present invention. Figure 4 In some embodiments, the upper cover pressing mechanism 50 includes a plurality of groups of extrusion components corresponding to the plurality of upper covers TC, respectively, and each group of extrusion components includes at least two extrusion components.

[0177] exist Figure 4In the embodiment, the upper cover pressing mechanism 50 may include four pressing assemblies 50a, 50b, 50c, and 50d, and may be divided into two groups of pressing assemblies corresponding to two upper covers TC, wherein the pressing assemblies 50a and 50b are used to press the front side surface portion and the rear side surface portion of one upper cover TC, and the pressing assemblies 50c and 50d are used to press the front side surface portion and the rear side surface portion of the other upper cover TC. The number of pressing pieces 51 included in each pressing assembly may be adjusted so as to meet the pressing requirements while avoiding interference with the riveting operation of the rivets.

[0178] In this embodiment, a plurality of groups of extrusion assemblies are used to extrude the corresponding upper covers TC respectively, and at least two extrusion assemblies of each group of extrusion assemblies are used to compress different parts of the upper cover TC, thereby achieving the effect of compressing each upper cover TC while making the upper cover TC more reliably compressed.

[0179] refer to Figure 4 In some embodiments, each extrusion assembly includes: an extrusion member 51, a vertical driving element 52, and a horizontal driving element 53. The extrusion member 51 is used to press the corresponding upper cover TC downward. The vertical driving element 52 is drivingly connected to the extrusion member 51 and is configured to drive the extrusion member 51 to rise or fall in the vertical direction. The horizontal driving element 53 is connected to the vertical driving element 52 and is configured to drive the vertical driving element 52 to move horizontally so as to approach or move away from the corresponding upper cover TC in the horizontal direction.

[0180] The extrusion member 51 may adopt various structures capable of achieving the extrusion effect, such as Figure 4 The vertical driving element 52 may be an element capable of realizing a vertical driving action, such as a cylinder, an electric push rod, etc., to drive the extrusion member 51 to rise or fall in the vertical direction, so as to realize the action of pressing the upper cover TC downward. The horizontal driving element 53 may be an element capable of realizing a horizontal driving action, such as a cylinder, an electric push rod, etc., to drive the vertical driving element 52 to move in the horizontal direction, so that the extrusion member 51 approaches or moves away from the corresponding upper cover TC in the horizontal direction.

[0181] In this embodiment, the extrusion member 51 is driven by the horizontal driving element 53 to move closer to or farther away from the corresponding upper cover TC in the horizontal direction. When the upper cover TC needs to be pressed, the extrusion member 51 can be moved closer to the upper cover TC in the horizontal direction, and when the upper cover TC is placed, the extrusion member 51 can be moved away from the corresponding upper cover TC in the horizontal direction in advance to avoid interfering with the placement of the upper cover TC. The upper cover TC can be pressed by the driving action of the vertical driving element 52, and when the upper cover TC is placed, the extrusion member 51 can be moved away from the corresponding upper cover TC in the vertical direction in advance to avoid interfering with the placement of the upper cover TC.

[0182] Figure 5Schematic diagram of the structure of the fast-forward mechanism in the assembly system embodiment of the battery device disclosed in the present invention. Figure 1 and Figure 5 In some embodiments, the plurality of operating positions further include a first cache position Pb1 and / or a second cache position Pb2, wherein the first cache position Pb1 is located upstream of the first operating position P1 along the preset conveying route, and the second cache position Pb2 is located between the first operating position P1 and the at least one second operating position along the preset conveying route. The conveying mechanism 10 includes a fast-forward mechanism 11, which is configured to be connected to a pallet PA conveyed at a first speed, wherein the battery device BM is carried on the pallet PA. The fast-forward mechanism 11 is configured to drive the pallet PA to move from the first cache position Pb1 to the first operating position P1 at a second speed, and / or to drive the pallet PA to move from the first operating position P1 to the second cache position Pb2 at a third speed, wherein the second speed and the third speed are both greater than the first speed.

[0183] The fast-forward mechanism 11 may be provided with a pin structure that can be lifted up and inserted into a positioning hole provided on the pallet, so as to quickly connect to or disconnect from the pallet.

[0184] The first cache position Pb1 is located upstream of the first operating position P1 along the preset conveying route. The fast-forward mechanism 11 can be connected to the tray PA that has arrived at the first cache position Pb1 at the first cache position Pb1, and move the tray PA and the battery device BM carried by the tray PA to the first operating position P1 at a faster speed than the conveying mechanism. After moving the tray PA, the fast-forward mechanism 11 can be disconnected from the tray PA and return to the first cache position Pb1.

[0185] The second buffer position Pb2 is located between the first operating position P1 and the at least one second operating position along the preset conveying route. The fast-forward mechanism 11 can be connected to the tray PA that has arrived at the first operating position P1 at the first operating position P1, and move the tray PA and the battery device BM carried by the tray PA to the second buffer position at a faster speed than the conveying mechanism. After moving the tray PA, the fast-forward mechanism 11 can be disconnected from the tray PA and return to the first operating position P1.

[0186] In this embodiment, the extrusion member 51 is driven by the horizontal driving element 53 to move closer to or farther away from the corresponding upper cover TC in the horizontal direction. When the upper cover TC needs to be pressed, the extrusion member 51 can be moved closer to the upper cover TC in the horizontal direction, and when the upper cover TC is placed, the extrusion member 51 can be moved away from the corresponding upper cover TC in the horizontal direction in advance to avoid interfering with the placement of the upper cover TC. The upper cover TC can be pressed by the driving action of the vertical driving element 52, and when the upper cover TC is placed, the extrusion member 51 can be moved away from the corresponding upper cover TC in the vertical direction in advance to avoid interfering with the placement of the upper cover TC.

[0187] refer to Figure 5 In some embodiments, the fast-forward mechanism 11 includes a second driving mechanism 111 and a second linear guide assembly 112. The second driving mechanism 111 includes a servo element 111a and a transmission mechanism 111b, and the servo element 111a drives the transmission mechanism 111b to drag the pallet PA to move along the preset conveying route. The second linear guide assembly 112 is configured to linearly guide the movement of the pallet PA.

[0188] The second driving mechanism 111 includes a servo element 111a and a transmission mechanism 111b. The servo element 111a can be a servo motor, which outputs torque to the transmission mechanism 111b to drive the tray PA to move along the preset conveying route. The transmission mechanism 111b can be a ball screw or other structural form. The second linear guide assembly 112 can be implemented by a linear slide rail with a slider, or by a guide rod with a slider.

[0189] In this embodiment, the servo element 111a and the transmission mechanism 111b are used to drive the pallet PA to move, so that the transmission speed of the pallet PA can be improved while achieving precise transmission, and the second linear guide component 112 can cooperate with the transmission mechanism 111b to enable the pallet PA to obtain higher movement accuracy.

[0190] Figure 6 Schematic diagram of the structure of the riveting mechanism in the embodiment of the assembly system of the battery device disclosed in the present invention. Figure 1 and Figure 6 In some embodiments, the riveting mechanism 30 includes: a feeding mechanism 31 and a rivet installation robot 32. The feeding mechanism 31 includes a flexible vibration plate 311, and the flexible vibration plate 311 is used to separate and orient the posture of the rivets used to fix the upper cover TC. The rivet installation robot 32 is configured to grab the rivets from the feeding mechanism 31 and fix the upper cover TC on the battery device BM through the rivets.

[0191] The flexible vibration disk 311 of the feeding mechanism 31 can effectively separate the rivets and orient the posture of the rivets used to fix the upper cover TC, so that the rivet installation robot 32 can more accurately grab the rivets from the feeding mechanism 31, reducing the risk of rivet skew or grabbing failure, which is beneficial to reducing the equipment failure rate, and can adapt to rivets of various shapes and sizes, reducing the cost of changeover.

[0192] The rivet installation robot 32 may be any robot that can grab rivets and fix the upper cover TC to the battery device BM through the rivets. The robot here may be a horizontal multi-joint robot, or other types of robots such as a rectangular coordinate robot, a cylindrical coordinate robot, a 6-axis industrial robot, etc. The rivet installation robot 32 may be provided with a rivet installation gripper including a rivet suction cup that can simultaneously suck up multiple rivets, and cooperate with a cylinder or other extrusion device on the rivet installation robot 32 to realize the riveting operation.

[0193] In this embodiment, a rivet installation robot grabs rivets from a feeding mechanism having a flexible vibration plate, and fixes the upper cover TC to the battery device BM through the rivets, so that the rivets can be accurately grabbed and installed, thereby improving the success rate and efficiency of riveting.

[0194] refer to Figure 6 In some embodiments, the feeding mechanism 31 further includes a rivet positioning platform 312, a rivet transfer robot 313 and a rivet positioning detection mechanism 314. The rivet positioning platform 312 includes at least one movable supporting plate, and the supporting plate has rivet reserved positions corresponding to some rivet holes of the upper cover TC. The rivet transfer robot 313 is configured to transfer the oriented rivets in the flexible vibration disk 311 to the rivet reserved positions on the supporting plate. The rivet positioning detection mechanism 314 is configured to perform positioning detection on the rivets in the flexible vibration disk 311, and / or detect whether the rivets on the supporting plate are in place.

[0195] The rivet positioning platform 312 may include one or more load-bearing plates, such as Figure 6 Three carrier plates 312a, 312b, and 312c are shown in FIG. Each carrier plate may be provided with one or more rivet reserved positions, and the rivet reserved positions may correspond to the number of rivets that the rivet installation gripper of the rivet installation robot can grasp at one time. Each carrier plate may be movable to facilitate the grasping of rivets by the rivet installation robot and the placement of rivets by the rivet transfer robot 313, thereby reducing the possibility of interference.

[0196] The rivet transfer robot 313 can be any robot capable of grabbing rivets and transferring them to the carrier plate through the rivets. The robot here can be a horizontal multi-joint robot, or other types of robots such as a rectangular coordinate robot, a cylindrical coordinate robot, a 6-axis industrial robot, etc.

[0197] The rivet positioning detection mechanism 314 can realize the positioning detection of the rivet by optical detection, ultrasonic detection, laser detection and the like. For example, the rivet positioning detection mechanism 314 can include a camera unit using a charge coupled device CCD or a complementary metal oxide semiconductor CMOS sensor. The rivet positioning detection mechanism 314 can realize the positioning detection of the rivet in the flexible vibration plate 311 so that the rivet transfer robot 313 can accurately grasp the rivet, and can also realize the positioning detection of the rivet in the rivet positioning platform 312 to determine whether the rivet is accurately transferred to the rivet reserved position on the carrier plate.

[0198] In this embodiment, in conjunction with the detection of the rivet positioning detection mechanism 314, the rivet transfer robot 313 grabs the oriented rivets from the flexible vibration disk 311 and transfers them to the reserved rivet position on the carrier plate for grabbing by the rivet installation robot. In this way, during the riveting and fixing process, rivet positioning, preparation, picking and installation are carried out simultaneously, which effectively saves assembly time and improves assembly efficiency.

[0199] In some embodiments, the rivet positioning platform 312 includes a plurality of supporting plates, each having a rivet reserved position corresponding to a rivet hole of different parts of the upper cover TC.

[0200] In this embodiment, a battery device BM in a certain operating position needs to be riveted with multiple rivets, and these rivets are divided into multiple groups through the rivet reserved positions of each of the multiple carrier plates, so that the rivet installation robot can perform rivet grabbing and riveting operations in groups. Moreover, the grabbing of the rivet installation robot and the transfer of the rivet transfer robot can be performed synchronously, with the rivet installation robot grabbing the rivets on one carrier plate, while the rivet transfer robot transfers the rivets in the flexible vibration plate to another carrier plate.

[0201] refer to Figure 1 In some embodiments, the riveting mechanism 30 includes a plurality of feeding mechanisms 31 and rivet installation robots 32, which respectively fix the plurality of upper covers TC on the plurality of battery devices BM that have reached the first operating position P1 and at least one second operating position.

[0202] By setting up a plurality of groups of the feeding mechanism 31 and the rivet installation robot 32, riveting operations can be performed at a plurality of operating positions, so that the upper cover TC can be pre-riveted and fixed for a plurality of battery devices BM that have reached the first operating position P1, and one or more supplementary riveting and fixing can be performed for other positions that require riveting at one or more second operating positions.

[0203] For example, when the rivet installation robot 32 is placing the upper cover TC and pre-riveting and fixing 6 rivets on a group of battery devices BM at the first operating position P1, another rivet installation robot 32 can rivet and fix 12 rivets on another group of battery devices BM at a second operating position P21, and yet another rivet installation robot 32 can rivet and fix 8 rivets on yet another group of battery devices BM at another second operating position P22.

[0204] In this embodiment, by setting up multiple groups of feeding mechanisms 31 and the rivet installation robots 32, all rivets for fixing the upper cover can be divided into multiple groups for riveting at different operating positions. In this way, with the transportation of the conveying mechanism 10, riveting operations can be performed on different groups of battery devices BM at various operating positions, thereby saving the assembly cycle of the battery devices and improving the assembly efficiency.

[0205] Figure 7 is a schematic diagram of some embodiments of the assembly method according to the present disclosure. Figure 7 Based on the assembly system of the battery device BM of any of the above embodiments, the present disclosure also provides an assembly method of the assembly system of the battery device BM according to the above embodiment. The assembly method includes step S1, step S2 and step S3.

[0206] In step S1, the conveying mechanism 10 is used to convey a plurality of battery devices BM in groups in sequence along a preset conveying route to a plurality of operating positions of the preset conveying route, wherein the plurality of operating positions include a first operating position P1 and at least one second operating position, and the at least one second operating position is located downstream of the first operating position P1 along the preset conveying route.

[0207] In step S2 , the upper cover transfer mechanism 20 transfers a plurality of upper covers TC to the first operating position P1 in groups, and respectively places the upper covers TC on the plurality of battery devices BM that have arrived at the first operating position P1 .

[0208] In step S3 , the plurality of upper covers TC are fixed to the plurality of battery devices BM that have reached the first operating position P1 and at least one second operating position by means of riveting through the riveting mechanism 30 .

[0209] In this embodiment, a plurality of battery devices BM are conveyed in groups by the conveying mechanism 10, and a plurality of upper covers TC are transferred in groups by the upper cover transferring mechanism 20, so as to place and rivet the plurality of upper covers TC at the first operating position P1, thereby saving the time of transferring and installing the upper covers TC, improving the assembly efficiency, and facilitating the use of fewer upper cover transferring and riveting related equipment, thereby saving the production and manufacturing cost of the battery device assembly.

[0210] refer to Figure 1-Figure 6 , an optional embodiment of the assembly system of the battery device of the present disclosure is now described.

[0211] The battery device assembly system is used to assemble the upper cover TC onto the battery device BM, and the assembly system includes: a conveying mechanism 10, an upper cover transfer mechanism 20, a riveting mechanism 30, a battery positioning detection mechanism 40, and an upper cover pressing mechanism 50. The conveying mechanism 10 is configured to convey a plurality of battery devices BM in groups in sequence along a preset conveying route to a plurality of operating positions of the preset conveying route, wherein the plurality of operating positions include a first operating position P1 and two second operating positions P21, P22, and the two second operating positions P21, P22 are located downstream of the first operating position P1 along the preset conveying route.

[0212] The upper cover transfer mechanism 20 includes an upper cover transfer robot 21 and an end picker 22 arranged at the end of the upper cover transfer robot 21, and the end picker 22 includes multiple first mounting plates 221 and multiple groups of picking mechanisms 222. The multiple groups of picking mechanisms 222 are respectively arranged on the multiple first mounting plates 221, and are configured to pick up and release the multiple upper covers TC respectively.

[0213] The end tool 22 further includes a plurality of contour parts 223 and a distance sensor 226, and the plurality of contour parts 223 are arranged on the same side of each first mounting plate 221. The distance sensor 226 is arranged on at least one of the plurality of first mounting plates 221, and is configured to sense the position of the upper cover TC when picking up the upper cover TC, and / or, when placing the upper cover TC on the battery device BM, sense the position of the upper cover TC relative to the battery device BM. The end tool 22 further includes a second mounting plate 224 and a lifting mechanism 225, and the lifting mechanism 225 is arranged between the second mounting plate 224 and at least one of the plurality of first mounting plates 221.

[0214] The battery positioning detection mechanism 40 includes a bracket 41 and a plurality of camera units 42. The bracket 41 is disposed adjacent to the first operating position P1, and the plurality of camera units 42 are disposed on the bracket 41 and located on the upper side of the conveying mechanism 10, and are configured to take pictures and position the battery device BM and the upper cover TC at the first operating position P1, so as to cooperate with the upper cover transfer mechanism 20 and the riveting mechanism 30 to install the upper cover TC.

[0215] The upper cover pressing mechanism 50 includes a plurality of groups of extrusion assemblies corresponding to the plurality of upper covers TC, each group of extrusion assemblies includes at least two extrusion assemblies. Each extrusion assembly includes an extrusion member 51, a vertical driving element 52 and a horizontal driving element 53. The extrusion member 51 is used to extrude the corresponding upper cover TC downward. The vertical driving element 52 is drivingly connected to the extrusion member 51 and is configured to drive the extrusion member 51 to rise or fall in the vertical direction. The horizontal driving element 53 is connected to the vertical driving element 52 and is configured to drive the vertical driving element 52 to move horizontally so that the extrusion member 51 approaches or moves away from the corresponding upper cover TC in the horizontal direction.

[0216] The plurality of operating positions further include a first cache position Pb1 and a second cache position Pb2, wherein the first cache position Pb1 is located upstream of the first operating position P1 along the preset conveying route, and the second cache position Pb2 is located between the first operating position P1 and the at least one second operating position P21, P22 along the preset conveying route, and the conveying mechanism 10 includes a fast-forward mechanism 11. The fast-forward mechanism 11 is configured to be connected to a pallet PA conveyed at a first speed, wherein the battery device BM is carried on the pallet PA. The fast-forward mechanism 11 is configured to drive the pallet PA to move from the first cache position Pb1 to the first operating position P1 at a second speed, and to drive the pallet PA to move from the first operating position P1 to the second cache position Pb2 at a third speed, wherein the second speed and the third speed are both greater than the first speed.

[0217] The fast-forward mechanism 11 includes a second driving mechanism 111 and a second linear guide assembly 112. The second driving mechanism 111 includes a servo element 111a and a transmission mechanism 111b, wherein the servo element 111a drives the transmission mechanism 111b to drag the pallet PA to move along the preset conveying route. The second linear guide assembly 112 is configured to linearly guide the movement of the pallet PA.

[0218] The riveting mechanism 30 includes a feeding mechanism 31, a rivet installation robot 32, a rivet positioning platform 312, a rivet transfer robot 313 and a rivet positioning detection mechanism 314. The feeding mechanism 31 includes a flexible vibration disk 311, and the flexible vibration disk 311 is used to separate and orient the posture of the rivets used to fix the upper cover TC. The rivet installation robot 32 is configured to grab the rivets from the feeding mechanism 31 and fix the upper cover TC on the battery device BM through the rivets. The rivet positioning platform 312 includes a plurality of movable supporting plates, each supporting plate having a rivet reserved position corresponding to a part of the rivet holes of the upper cover TC. The rivet transfer robot 313 is configured to transfer the oriented rivets in the flexible vibration disk 311 to the rivet reserved position on the supporting plate. The rivet positioning detection mechanism 314 is configured to perform positioning detection on the rivets in the flexible vibration disk 311, and detect whether the rivets on the supporting plate are in place.

[0219] In this specification, multiple embodiments are described in a progressive manner, and the focus of each embodiment is different, and the same or similar parts between the embodiments can be referred to each other. For the assembly method embodiment, since its overall and involved contents correspond to the contents in the system embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the system embodiment.

[0220] So far, various embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.

[0221] Although some specific embodiments of the present disclosure have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It should be understood by those skilled in the art that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims

1. A battery device assembly system for assembling a top cover (TC) onto a battery device (BM), characterized in that: include: A conveying mechanism (10) is configured to convey a plurality of battery devices (BM) in groups in sequence along a preset conveying route to a plurality of operating positions of the preset conveying route, wherein the plurality of operating positions include a first operating position (P1) and at least one second operating position, wherein the at least one second operating position is located downstream of the first operating position (P1) along the preset conveying route; An upper cover transfer mechanism (20) is configured to transfer a plurality of upper covers (TC) to the first operating position (P1) in groups, and place them respectively on the plurality of battery devices (BM) that have arrived at the first operating position (P1); A riveting mechanism (30) is configured to fix the plurality of upper covers (TC) to the plurality of battery devices (BM) that have reached a first operating position (P1) and at least one second operating position by riveting; an upper cover pressing mechanism (50), arranged adjacent to the first operating position (P1), and configured to press the upper covers (TC) respectively placed on the battery devices (BM) when the upper covers (TC) are placed on the battery devices (BM), so as to assist the rivet installation of the riveting mechanism (30); The plurality of operating positions further include a first cache position (Pb1) and / or a second cache position (Pb2), the first cache position (Pb1) being located upstream of the first operating position (P1) along the preset conveying route, the second cache position (Pb2) being located between the first operating position (P1) and the at least one second operating position along the preset conveying route, and the conveying mechanism (10) comprising: A fast-forward mechanism (11) is configured to be connected to a tray (PA) conveyed at a first speed, wherein the battery device (BM) is carried on the tray (PA); The fast-forward mechanism (11) is configured to drive the tray (PA) to move from the first cache position (Pb1) to the first operating position (P1) at a second speed, and / or to drive the tray (PA) to move from the first operating position (P1) to the second cache position (Pb2) at a third speed, wherein the second speed and the third speed are both greater than the first speed.

2. The assembly system according to claim 1, characterized in that: The upper cover transfer mechanism (20) comprises an upper cover transfer robot (21) and an end picker (22) arranged at the end of the upper cover transfer robot (21), wherein the end picker (22) comprises: A plurality of first mounting plates (221); A plurality of groups of picking mechanisms (222) are respectively arranged on the plurality of first mounting plates (221) and are configured to pick up and release the plurality of upper covers (TC) respectively.

3. The assembly system according to claim 2, characterized in that: The end picker (22) further comprises: A plurality of equal-height members (223) are arranged on the same side of each first mounting plate (221) and are used to restrict a plurality of positions of the upper cover (TC) to the same height when the picking mechanism (222) picks up the upper cover (TC).

4. The assembly system according to claim 2, characterized in that: The end picker (22) further comprises: A second mounting plate (224) connected to the end of the upper cover transfer robot (21); A lifting mechanism (225) is arranged between the second mounting plate (224) and at least one of the plurality of first mounting plates (221).

5. The assembly system according to claim 2, characterized in that: The end picker (22) further comprises: A distance measuring sensor (226) is arranged on at least one of the plurality of first mounting plates (221), and is configured to sense the position of the upper cover (TC) when picking up the upper cover (TC), and / or to sense the position of the upper cover (TC) relative to the battery device (BM) when placing the upper cover (TC) on the battery device (BM).

6. The assembly system according to claim 1, characterized in that: Also includes: The battery positioning detection mechanism (40) is configured to perform positioning detection on the battery device (BM) and the upper cover (TC) in the first operating position (P1) so as to guide the placement and riveting fixation of the upper cover (TC) relative to the battery device (BM).

7. The assembly system according to claim 6, characterized in that: The battery positioning detection mechanism (40) comprises: A bracket (41) is arranged adjacent to the first operating position (P1); A plurality of camera units (42) are arranged on the bracket (41) and located on the upper side of the conveying mechanism (10), and are configured to take pictures and position the battery device (BM) and the upper cover (TC) in the first operating position (P1) so as to cooperate with the upper cover transfer mechanism (20) and the riveting mechanism (30) to install the upper cover (TC).

8. The assembly system according to claim 7, characterized in that: The plurality of camera units (42) are divided into two groups, wherein one group of camera units (42) is configured to photograph and locate the front positioning marks of the battery device (BM) and the upper cover (TC) in the first operating position (P1) along the conveying direction (cd), and the other group of camera units (42) is configured to photograph and locate the rear positioning marks of the battery device (BM) and the upper cover (TC) in the first operating position (P1) along the conveying direction (cd).

9. The assembly system according to claim 7, characterized in that: The battery positioning detection mechanism (40) further comprises: A first driving mechanism (43) is mounted on the bracket (41) and connected to at least one of the plurality of camera units (42), and is configured to adjust the position of at least one of the plurality of camera units (42).

10. The assembly system according to claim 9, characterized in that: The first driving mechanism (43) comprises: A plurality of linear drive elements (431) are mounted on the support (41) and are respectively connected to the plurality of camera units (42), and are configured to respectively drive the plurality of camera units (42) to move forward or backward along a direction parallel to a conveying direction (cd) of the conveying mechanism (10); A first linear guide assembly (432) is mounted on the bracket (41) and is configured to linearly guide the movement of the multiple camera units (42).

11. The assembly system according to claim 1, characterized in that: The upper cover pressing mechanism (50) comprises a plurality of groups of extrusion components respectively corresponding to the plurality of upper covers (TC), and each group of extrusion components comprises at least two extrusion components.

12. The assembly system according to claim 11, characterized in that: Each extrusion assembly includes: An extrusion member (51) is used to press the corresponding upper cover (TC) downwards; A vertical driving element (52) is drivingly connected to the extrusion member (51) and is configured to drive the extrusion member (51) to rise or fall in a vertical direction; A horizontal driving element (53) is connected to the vertical driving element (52) and is configured to drive the vertical driving element (52) to move horizontally, so that the extrusion element (51) moves closer to or farther from the corresponding upper cover (TC) in the horizontal direction.

13. The assembly system according to claim 1, characterized in that: The fast-forward mechanism (11) comprises: a second driving mechanism (111), comprising a servo element (111a) and a transmission mechanism (111b), wherein the servo element (111a) drives the transmission mechanism (111b) to drag the tray (PA) to move along the preset conveying route; and The second linear guide assembly (112) is configured to linearly guide the movement of the pallet (PA).

14. The assembly system according to claim 1, characterized in that: The riveting mechanism (30) comprises: A feeding mechanism (31) comprising a flexible vibration plate (311), wherein the flexible vibration plate (311) is used to separate and orient the posture of rivets used to fix the upper cover (TC); The rivet installation robot (32) is configured to grab the rivets from the feeding mechanism (31) and fix the upper cover (TC) to the battery device (BM) through the rivets.

15. The assembly system according to claim 14, characterized in that: The feeding mechanism (31) further comprises: A rivet positioning platform (312) comprises at least one movable bearing plate, the bearing plate having rivet reserved positions corresponding to some rivet holes of the upper cover (TC); A rivet transfer robot (313) configured to transfer the oriented rivets in the flexible vibration plate (311) to the rivet reserved positions on the carrier plate; The rivet positioning detection mechanism (314) is configured to perform positioning detection on the rivets in the flexible vibration plate (311), and / or detect whether the rivets on the bearing plate are in place.

16. The assembly system according to claim 15, characterized in that: The rivet positioning platform (312) comprises a plurality of bearing plates, each having a rivet reserved position corresponding to different parts of the rivet holes of the upper cover (TC).

17. The assembly system according to claim 14, characterized in that: The riveting mechanism (30) comprises a plurality of groups of the feeding mechanisms (31) and the rivet installation robots (32), which respectively fix the plurality of upper covers (TC) of the plurality of battery devices (BM) that have reached a first operating position (P1) and at least one second operating position.

18. An assembling method of a battery device assembly system according to any one of claims 1 to 17, characterized in that: include: By means of the conveying mechanism (10), a plurality of battery devices (BM) are sequentially conveyed in groups along a preset conveying route to a plurality of operating positions of the preset conveying route, wherein the plurality of operating positions include a first operating position (P1) and at least one second operating position, and the at least one second operating position is located downstream of the first operating position (P1) along the preset conveying route; The upper cover transfer mechanism (20) transfers a plurality of upper covers (TC) to the first operating position (P1) in groups, and places them respectively on the plurality of battery devices (BM) that have arrived at the first operating position (P1); The plurality of upper covers (TC) are fixed to the plurality of battery devices (BM) that have reached a first operating position (P1) and at least one second operating position by means of riveting through the riveting mechanism (30).

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