Battery module, battery pack, and unmanned aerial vehicle

Abstract

To provide a method for manufacturing a battery module, the battery module, a battery pack, and an unmanned aerial vehicle.SOLUTION: A battery module includes a cell assembly, a relay plate connected to tabs of the cell assembly, a filler, and a power harness. The battery module further includes a fastening frame. The fastening frame is provided with an accommodating chamber. The fastening frame includes a top wall, and the relay plate and the cell assembly are provided on the same side of the top wall. The fastening frame includes an exit line hole penetrating through the top wall. The relay plate and at least part of the cell assembly are accommodated in the accommodation chamber. The relay plate is provided with a support piece. The fastening frame further includes an escape groove, and a fastening hole communicating with the exit line hole is provided on a side wall of the escape groove facing the exit hole. One end of the power harness is connected to the cell assembly via the support piece, and the other end passes through the exit line hole and the fastening hole and is provided on a side of the top wall away from the cell assembly. The filler is arranged in a gap between the inner side of the accommodating chamber, and the cell assembly and the relay plate.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] This application claims priority based on Japanese Patent Application No. 202011592974.5, filed in Japan on December 29, 2020, the contents of which are incorporated herein by reference.

[0002] The present application relates to the field of batteries, and in particular to battery modules, battery packs and drones. [Background technology]

[0003] Lithium-ion batteries have the characteristics of high energy density, high cycle times, and long storage time, and therefore have great prospects for development in the fields of household appliances, electric vehicles, smart energy storage equipment, electric bicycles, large drones, and electric vehicles. At present, in the process of processing batteries in the industry, rubber injection is performed on the battery module to fix the entire module. Most of the traditional rubber injection methods are full rubber injection or bottom rubber injection, which causes glue residue in the gap position, which affects the rubber injection effect and causes glue residue on the appearance. In addition, the traditional rubber injection requires a large amount of rubber, which reduces the energy density of the battery and makes the heat dissipation poor after rubber injection, and the cost required for rubber injection is high. Summary of the Invention

[0004] Therefore, it is necessary to provide a method for manufacturing a battery module, a battery module, a battery pack, and an unmanned aerial vehicle.

[0005] A first embodiment of the present application provides a method for manufacturing a battery module, comprising: providing an intermediate plate on a cell assembly; connecting the intermediate plate to a tab of the cell assembly; and arranging a fixing frame in an inverted manner; the fixing frame includes a accommodating chamber having an opening on one side, the accommodating chamber accommodating the intermediate plate and at least some of the cell assemblies; arranging the fixing frame in an inverted manner means placing the fixing frame with the opening side of the accommodating chamber facing upward; arranging the intermediate plate and at least some of the cell assemblies in an inverted manner means placing the intermediate plate and one end of the cell assembly on which the intermediate plate is installed facing downward in the accommodating chamber of the fixing frame; and a filler is provided in a gap between the cell assembly and an inside of the accommodating chamber and a gap between the intermediate plate and an inside of the accommodating chamber.

[0006] In combination with the first aspect, in a first possible aspect, the filler includes rubber.

[0007] In combination with the first embodiment, in a second possible embodiment, the frame is a transparent structure, and the filling of the filling material is observed through the frame.

[0008] In combination with the first embodiment, in a third possible embodiment, filling is performed simultaneously on both sides of the frame.

[0009] In combination with the first aspect, in a fourth feasible aspect, the fixed frame includes a top wall, two side walls and two end walls, the top wall, the two side walls and the two end walls form surrounding the accommodating chamber, a stopper base is provided on the top wall of the fixed frame, the stopper base is provided within the accommodating chamber, and the step of accommodating the relay plate and at least a portion of the cell assembly by the accommodating chamber includes pressing the fixed frame so as to flatten the stopper base onto the relay plate.

[0010] In combination with the first aspect, in a fifth possible aspect, before the step of providing a filler in the gap between the inside of the accommodating chamber and the cell assembly and the relay plate, a harness is provided, one end of the harness is connected to the cell assembly or the relay plate accommodated in the accommodating chamber, and the other end of the harness passes through the accommodating chamber.

[0011] Combining with the first to fifth feasible aspects, in a sixth feasible aspect, the harness includes a power harness connected to the tab of the cell assembly, the accommodating chamber is provided with an outlet hole, and the step of penetrating the other end of the harness through the accommodating chamber includes inserting the power harness into the outlet hole and filling the outlet hole with fixing rubber to fill the gap between the power harness and the outlet hole.

[0012] In combination with the first to fifth feasible aspects, in a seventh feasible aspect, the harness includes a sampling harness connected to the relay plate, a harness hole is provided in the storage chamber, and the step of penetrating the other end of the harness through the storage chamber includes inserting the sampling harness into the harness hole and filling the harness hole with fixed rubber to fill the gap between the sampling harness and the harness hole.

[0013] A second embodiment of the present application provides a battery module comprising: a cell assembly; an intermediate plate provided on the cell assembly and connected to a tab of the cell assembly; a fixing frame; and a filler, wherein the fixing frame has an accommodating chamber, the intermediate plate further has a chip, the intermediate plate, the chip and at least a portion of the cell assembly are accommodated in the accommodating chamber, and the filler is disposed inside the accommodating chamber and in a gap between the cell assembly and the intermediate plate.

[0014] In combination with the second aspect, in a first possible aspect, the fixed frame is a transparent structure.

[0015] In combination with the second aspect or the first possible aspect, in a second possible aspect, the filler comprises rubber.

[0016] In combination with the second to second possible embodiments, in a third possible embodiment, the chip is an encryption chip for encrypting matching between the battery module and an external electric device.

[0017] In combination with the second aspect, in a fourth feasible aspect, the fixing frame includes a top wall, two side walls and two end walls, the top wall, the two side walls and the two end walls being formed to surround the accommodating chamber, the cell assembly includes a plurality of battery cells, the battery cells including a body and a tab, and at least a portion of the tab of the battery cell is accommodated in the accommodating chamber.

[0018] In combination with the second to fourth possible aspects, in a fifth possible aspect, at least a portion of the main body of the battery cell is housed in the housing chamber.

[0019] In combination with the second to fourth possible aspects, in a sixth possible aspect, a stopper stand is provided on the top wall within the accommodation chamber, and the stopper stand abuts against the relay plate.

[0020] In combination with the second to sixth feasible aspects, in a seventh feasible aspect, the extension direction of the stopper base is perpendicular to the stacking direction of the battery cells to facilitate filling of the filler, and forms a flow path for filling the filler.

[0021] In combination with the second to fourth feasible aspects, in an eighth feasible aspect, the battery module further includes a harness having one end connected to the cell assembly or the relay board housed in the housing chamber and the other end passing through the housing chamber.

[0022] In combination with the second to eighth feasible embodiments, in a ninth feasible embodiment, the harness includes a power harness and a sampling harness, the power harness being connected to the two tabs on the outside of the battery module, and the sampling harness being electrically connected to the relay board.

[0023] In a tenth possible embodiment, which can be combined with the second to ninth possible embodiments, a recess is provided in the housing chamber, and the power harness is welded to the tab and housed in the recess.

[0024] In combination with the second to tenth feasible aspects, in an eleventh feasible aspect, the bottom wall of the escape groove is further provided with an outlet hole penetrating the top wall, and the outlet hole allows the power harness to pass through the fixed frame.

[0025] In a twelfth possible embodiment, which is combined with the second to ninth possible embodiments, the top wall is provided with a harness hole for fixing the sampling harness by passing the sampling harness through the fixing frame.

[0026] In some embodiments, the filler material includes rubber, and the filler material is filled into the chamber and fixes the circuit board, the cell assembly, and the fixing frame after the filler material is cured.

[0027] In some embodiments, the stop platform abuts a plate where the tab is not connected to the adhesive plate.

[0028] In some embodiments, a fixed rubber is provided in the gap between the outlet hole and the power harness, and the fixed rubber hardens before the filling material.

[0029] In some embodiments, the chamber further comprises a rubber receiving groove provided on the side wall or the end wall.

[0030] In some embodiments, the rubber accommodating groove is provided in the end walls at both ends in the extending direction of the stopper base.

[0031] In some embodiments, the rubber accommodating groove is formed by recessing the surface of the end wall in a direction away from the other end wall.

[0032] In some embodiments, the top wall includes a first side and a second side disposed opposite each other, the relay plate and the cell assembly are disposed on the first side of the top wall, and the fixing frame includes a through hole extending through the top wall. The relay board and at least a part of the cell assembly are accommodated in the accommodation chamber; the fixing frame further includes an escape groove including an escape groove side wall extending from the top wall, the escape groove side wall being provided on a second side of the top wall, the escape groove side wall being provided with a fixing hole communicating with the through hole, one end of the harness being connected to the cell assembly or the relay plate, the other end of the harness being inserted through the through hole and the fixing hole, and the other end of the harness being provided on the second side of the top wall, In some embodiments, the filler includes rubber, the undercut includes a bottom wall and a plurality of undercut side walls, the bottom wall is connected to one end of the plurality of undercut side walls remote from the top wall, the undercut further includes an outlet hole penetrating the bottom wall, the outlet hole communicates with a fixing hole, a fixing rubber is provided in a gap between the outlet hole and a harness, and the fixing rubber hardens before the filler, and / or A fixing rubber is provided in the gap between the fixing hole and the harness, and the fixing rubber hardens before the filling material hardens.

[0033] In some embodiments, the relay plate is provided with a support piece, the harness includes a power harness, the power harness is connected to the cell assembly via the support piece, and the support piece is received in the recess.

[0034] In some embodiments, the filler material is disposed within the undercut.

[0035] In some embodiments, the fixing frame includes a top wall, the top wall including a first side and a second side arranged opposite each other, the cell assembly and the storage chamber are provided on the first side of the top wall, the cell assembly includes a plurality of stacked battery cells, the battery cells include a main body and a tab, the battery module further includes an adhesive, the adhesive is provided between at least two adjacent main bodies such that a gap is formed between the two adjacent main bodies along a stacking direction of the battery cells, the gap is connected to the storage chamber, and the adhesive is provided outside the storage chamber.

[0036] In some embodiments, the end of the adhesive proximate the fixed frame is located between two adjacent bodies.

[0037] In some embodiments, the opening of the chamber faces the adhesive.

[0038] In some embodiments, the fixed frame further includes two side walls connected to the top wall and two end walls connected to the top wall, the top wall, the two side walls and the two end walls forming the storage chamber.

[0039] In some embodiments, the two side walls are provided opposite each other along a stacking direction of the battery cells, and the two end walls are connected to the two side walls, and the two end walls are provided opposite each other.

[0040] In some embodiments, a gap is provided between the end wall and the cell assembly, and the filler material is provided in the gap.

[0041] In some embodiments, the battery module includes a power harness, the fixing frame includes a through hole penetrating the top wall, the fixing frame further includes an escape groove, the escape groove further includes an escape groove side wall extending from the top wall, the escape groove side wall is provided on a second side of the top wall, and a fixing hole communicating with the through hole is provided in the escape groove side wall, one end of the power harness is connected to the cell assembly or the relay plate accommodated in the accommodation chamber, and the other end of the power harness is provided on the second side of the top wall by passing through the through hole and the fixing hole.

[0042] In some embodiments, the other end of the power harness passes through the fixing hole facing one end wall.

[0043] A third embodiment of the present application provides a battery pack, the battery pack including a battery case and a battery module, the battery module being any one of the battery modules of the first embodiment.

[0044] A fourth embodiment of the present application provides an unmanned aircraft comprising an aircraft body and a battery pack provided within the aircraft body, the battery pack supplying electricity to the aircraft, and the battery pack being a battery module of the second embodiment.

[0045] The manufacturing method of the battery module, the battery module, the battery pack including the battery module, and the drone use an inverted filling method to fill the storage chamber with filler, and fix the cell assembly, the relay plate and the fixing frame, thereby better coping with shock, vibration and dropping situations, protecting the head of the cell assembly and protecting the welding device on the relay plate, and by the action of the storage chamber, inverted rubber injection is compounded, the amount of filler used is reduced, weight is reduced, energy density is increased, and costs are reduced. [Brief description of the drawings]

[0046] [Figure 1] FIG. 1 is a schematic diagram of a battery module according to an embodiment of the present application. [Diagram 2]FIG. 2 is a schematic view of the battery module shown in FIG. 1 from another angle. [Diagram 3] FIG. 3 is a schematic diagram of a partially exploded configuration of the battery module shown in FIG. [Figure 4] FIG. 4 is a schematic diagram of the fixing frame shown in FIG. 3 at another angle. [Diagram 5] FIG. 5 is a flowchart of a method for manufacturing a battery module. [Figure 6] 6 is a schematic block diagram of an unmanned aerial vehicle according to another embodiment. The present application will be further described with reference to the above drawings for the following specific embodiments. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0047] Hereinafter, embodiments of the present application will be described with reference to the drawings. However, it is apparent that the described embodiments are only a part of the present application and do not include all embodiments.

[0048] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0049] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the description.

[0050] An embodiment of the present application provides a method for manufacturing a battery module, comprising: providing an intermediate plate on a cell assembly; connecting the intermediate plate to tabs of the cell assembly; and arranging a fixing frame in an inverted manner; the fixing frame includes an accommodating chamber having an opening on one side, the accommodating chamber accommodating the intermediate plate and at least some of the cell assemblies; arranging the fixing frame in an inverted manner means placing the fixing frame with the opening side of the accommodating chamber facing upward; arranging the intermediate plate and at least some of the cell assemblies in an inverted manner means placing the intermediate plate and one end of the cell assembly on which the intermediate plate is installed facing downward in the accommodating chamber of the fixing frame; and a filler is provided in a gap between the cell assembly and an inside of the accommodating chamber and a gap between the intermediate plate and an inside of the accommodating chamber.

[0051] Some embodiments of the present application further provide a battery module comprising: a cell assembly; an intermediate plate provided on the cell assembly and connected to a tab of the cell assembly; a fixing frame; and a filler, wherein the fixing frame has an accommodating chamber, the intermediate plate further has a chip, the intermediate plate, the chip, and at least a portion of the cell assembly are accommodated in the accommodating chamber, and the filler is disposed in a gap between the inside of the accommodating chamber and the cell assembly and the intermediate plate.

[0052] An embodiment of the present application further provides a battery pack including a battery case and a battery module, the battery module being the above-mentioned battery module.

[0053] An embodiment of the present application further provides an unmanned aircraft comprising an aircraft body and a battery pack installed within the aircraft body, the battery pack supplying electricity to the aircraft, and the battery pack being the battery pack described above.

[0054] The manufacturing method of the battery module, the battery module, the battery pack including the battery module, and the drone use an inverted filling method to fill the storage chamber with filler, and fix the cell assembly, the relay plate and the fixing frame, thereby better coping with shock, vibration and dropping situations, protecting the head of the cell assembly and protecting the welding device on the relay plate, and by the action of the storage chamber, inverted rubber injection is compounded, the amount of filler used is reduced, weight is reduced, energy density is increased, and costs are reduced.

[0055] Hereinafter, some embodiments of the present application will be described in detail with reference to the drawings. The following embodiments and features of the embodiments may be combined if there is no conflict.

[0056] 1 to 3, an embodiment of the present application proposes a battery module 100. The battery module 100 includes a cell assembly 10, an intermediate plate 20, a fixing frame 30, a harness 40, and a filler (not shown) filled in the fixing frame 30. The intermediate plate 20 is provided on the cell assembly 10 and is electrically connected to the cell assembly 10. The intermediate plate 20 is further provided with a chip (not shown) electrically connected to the cell assembly 10. The fixing frame 30 is placed on the side of the cell assembly 10 on which the intermediate plate 20 is provided, and accommodates the intermediate plate 20 and the chip thereon. One end of the harness 40 is connected to the cell assembly 10 and intermediate plate 20 accommodated in the fixing frame 30, and the other end is drilled in the fixing frame 30. The filler is filled in the fixing frame 30 to fix the cell assembly 10, the intermediate plate 20, the fixing frame 30, and the harness 40.

[0057] Specifically, the cell assembly 10 includes a plurality of battery cells 11. The adjacent battery cells 11 are fixedly connected to each other by an adhesive 17. The battery cells 11 include a core body 111 and two tabs 112. The adhesive 17 is provided between at least two adjacent core bodies 111 such that a gap is formed between the two adjacent core bodies 111. The two tabs 112 are provided on the core body 111 and extend from the same side of the core body 111. Of the two tabs 112, one is a positive electrode tab and the other is a negative electrode tab. The battery cell 11 and the other adjacent battery cell 11 are electrically connected to each other by the connection of the positive electrode tab and the negative electrode tab. The positive and negative electrode connection parts of the battery cells 11 are electrically connected to the relay plate 20. In this embodiment, all the battery cells 11 are connected in series. Tabs of the two outer battery cells 11 of the cell assembly 10 that are not connected to adjacent battery cells 11 constitute the first pole 12 and the second pole 13 of the cell assembly 10. In some embodiments, one end of the adhesive 17 close to the fixing frame 30 is located between two adjacent core bodies 111.

[0058] In some embodiments, the adhesive 17 is foam cotton.

[0059] In some embodiments, the first pole 12 is a positive pole and the second pole 13 is a negative pole.

[0060] The relay plate 20 is provided with tab holes 21. The positive electrode tab of the battery cell 11 and the negative electrode tab of the adjacent battery cell 11 are each bent through the corresponding tab holes 21 and connected by welding (or the negative electrode tab of the battery cell 11 and the positive electrode tab of the adjacent battery cell 11 are each bent through the corresponding tab holes 21 and connected by welding).

[0061] In one embodiment, the chip is an encryption chip, which encrypts the matching between the battery module 100 and an external electrical device to prevent a user from arbitrarily replacing the battery and finding that the replaced battery is incompatible with the electrical device, thereby causing a risk of electrical use.

[0062] 4 , the fixing frame 30 includes a top wall 31, two side walls 32, and two end walls 33. The top wall 31 connects the two side walls 32 and the two end walls 33. The two side walls 32 connect the two end walls 33, respectively. In some embodiments, the two side walls 32 are disposed opposite to each other along the stacking direction of the battery cells 11.

[0063] A chamber 34 having an opening 345 on one side is enclosed by a top wall 31, two side walls 32, and two end walls 33 of the fixed frame 30. In some embodiments, the top wall 31 has a first side 315 and a second side 316 opposite each other, and the cell assembly 10 and the chamber 34 are disposed on the first side 315 of the top wall 31.

[0064] The receiving chamber 34 receives the side of the electrode assembly 10 provided with the tab 112 and the intermediate plate 20. The filler is filled into the receiving chamber 34 to fix the tab 112 of the cell assembly 10, the intermediate plate 20, and the harness 40 to the receiving chamber 34. In some embodiments, the opening 345 of the receiving chamber faces the adhesive. In some embodiments, the gap is in communication with the receiving chamber 34, and the adhesive 17 is disposed outside the receiving chamber 34.

[0065] Furthermore, the contour of the chamber 34 matches the contour of the side of the cell assembly 10 on which the tab 112 is provided. In some embodiments, a gap is provided between the end wall 33 and the cell assembly 10, and the filler material is provided in the gap.

[0066] In some embodiments, the filler is a general filling adhesive. In some embodiments, the filler is filled into the receiving chamber 34, and after the filler is solidified, the filler fixes the cell assembly 10, the relay plate 20, and the fixing frame 30.

[0067] A stopper base 341 is provided in the accommodation chamber 34. The stopper base 341 is provided on the top wall 31, and the stopper base 341 is provided on the first side 315 of the top wall 31. The extension direction of the stopper base 341 is perpendicular to the stacking direction of the battery cells 11, and the stopper base 341 can abut against the relay plate 20 to regulate and guide the attachment position of the fixing frame 30 when the fixing frame 30 is installed on the cell assembly 10. Specifically, the stopper base 341 can abut against a plate body that is not connected to the tab 112 of the relay plate 20.

[0068] At the same time, the amount of filler used when filling the battery module 100 can be reduced, and the extension direction of the stopper base 341 is perpendicular to the stacking direction of the battery cells 11, and a flow path can be formed in the accommodation chamber 34 for use when filling the filler in the same direction as the gap between the battery cells 11, which is convenient for the filler to quickly fill the gaps between the battery cells 11 and fixedly connect the battery cells 11 to the fixed frame 30. Furthermore, the installation of the stopper base 341 can enhance the structural strength of the fixed frame 30, and prevent the filler from spilling out due to deformation of the fixed frame 30 during filling.

[0069] In some embodiments, the top wall 31 is further provided with a lightening groove (not shown). The lightening groove is provided on the outer surface of the top wall 31 with respect to the stopper base 341. The lightening groove can reduce the weight of the fixed frame 30.

[0070] The accommodation chamber 34 further includes a rubber accommodation groove 342. The rubber accommodation groove 342 is provided on the side wall 32 or the end wall 33. The rubber accommodation groove 342 can serve to store the filler and strengthen the fixation. Preferably, the rubber accommodation groove 342 is provided on the wall surfaces at both ends in the extending direction of the stopper base 341, which is the end wall 33 in this embodiment, and the rubber accommodation groove 342 provided on the end wall 33 may leave a gap to facilitate filling the filler into the accommodation chamber 34 when injecting the inverted rubber.

[0071] In some embodiments, the rubber accommodating groove 342 is provided on the end wall 33 , and the rubber accommodating groove 342 is formed by recessing the surface of the end wall 33 in a direction away from the other end wall 33 .

[0072] The harness 40 includes a power harness 41 and a sampling harness 42. The power harness 41 is connected to the first pole 12 or the second pole 13 of the cell assembly 10. The sampling harness 42 is electrically connected to the relay board 20.

[0073] A clearance groove 343 is provided in the accommodation chamber 34. A support piece 22 is provided in the relay plate 20. The support piece 22 is substantially L-shaped. The support piece 22 is accommodated in the clearance groove 343. The first pole 12 and the second pole 13 are connected to the support piece 22 through the corresponding tab holes 21, and the first pole 12 and the second pole 13 extend in a direction perpendicular to the plane of the relay plate 20. The power harness 41 is welded to the first pole 12 or the second pole 13 via the support piece 22, and is accommodated in the clearance groove 343. The clearance groove 343 is for securing a filling space for the filler so that the power harness 41 is fixed to the accommodation chamber 34 with the first pole 12 or the second pole 13.

[0074] In some embodiments, the wall surface of the undercut groove 343 is an insulating surface to insulate the welding surface of the power harness 41.

[0075] In some embodiments, the fixed frame 30 includes a through hole 317 penetrating the top wall 31, and the clearance groove 343 further includes a clearance groove side wall 3431 extending from the top wall 31, the clearance groove side wall 3431 being disposed on the second side 316 of the top wall 31. A wire outlet hole 311 is provided in a bottom wall of the clearance groove 343, further penetrating the top wall 31. The wire outlet hole 311 is for the power harness 41 to pass through the fixed frame 30 and fix the power harness 41.

[0076] In some embodiments, the escape groove 343 further includes a fixing hole 312 communicating with the wire outlet hole 311 in a side wall adjacent to the wire outlet hole 311. The fixing hole 312 is for fixing the power harness 41 after the power harness 41 is drilled. In some embodiments, the fixing hole 312 communicates with the through hole 317, and one end of the power harness 41 is connected to the battery unit 10 or the relay plate 20 accommodated in the accommodation chamber 34, and the other end of the power harness 41 passes through the through hole 317 and the fixing hole 312 and is disposed on the second side 316 of the top wall 31. In some embodiments, the other end of the power harness 41 passes through the fixing hole 312 and is directed toward one of the end walls 33.

[0077] In some embodiments, the shape of the fixing hole 312 is semicircular and the outer circumference of the power harness 41 is circular, so that when the power harness 41 passes through the fixing hole 312 and is accommodated in the fixing hole 312, the semicircular hole wall abuts against the outer circumference of the power harness 41, thereby fixing and engaging the power harness 41 in the fixing hole 312, and the abutting contact surfaces are sealed to prevent the filler from spilling.

[0078] The top wall 31 is provided with a harness hole 313. The harness hole 313 is for allowing the sampling harness 42 to pass through the fixing frame 30 and for fixing the sampling harness 42.

[0079] In some embodiments, a protective material 314 is provided around the outer periphery of the harness hole 313 in the top wall 31. The protective material 314 is for protecting the sampling harness 42 passing through the harness hole 313.

[0080] In some embodiments, when the relay plate 20 is not provided with a support piece 22, it is possible to directly weld the first pole 12 and the second pole 13 to the power harness 41. In that case, the escape groove 343 is not provided, and a harness hole 313 similar to the sampling harness 42 may be directly provided, or an outlet hole 311 may be directly provided in the top wall 31.

[0081] During assembly, first, the cell assembly 10 is connected to the relay plate 20 and the harness 40, respectively, then the power harness 41 and the sampling harness 42 pass through the outlet hole 311 and the harness hole 313, respectively, and then the fixing frame 30 is pressed to flatten the stopper base 341 on the relay plate 20. At this time, the receiving chamber 34 of the fixing frame 30 completely receives the tab 112 of the cell assembly 10 and the relay plate 20, the power harness 41 is engaged with the fixing hole 312, the outlet hole 311, the fixing hole 312, and the harness hole 313 are filled with fixing rubber (e.g., quick-drying rubber), filling the gaps between the power harness 41, the outlet hole 311, and the fixing hole 312, and filling the gaps between the sampling harness 42 and the harness hole 313. After the power harness 41 and the sampling harness 42 are fixed to the fixed frame 30, the wire outlet hole 311, the fixing hole 312 and the harness hole 313 are sealed, and the fixing rubber dries, the fixed frame 30 and the cell assembly 10 are inverted and flattened, the opening 345 of the storage chamber 34 of the fixed frame 30 is arranged facing upward, and a filler is filled and injected into the gaps between the battery cells 11 above the end wall 33 (formed by bonding the adjacent battery cells 11 with the adhesive 17) (the gaps between the electric cells on both sides may be filled simultaneously, or one side may be filled), the storage chamber 34 of the fixed frame 30 is filled with the filler, and finally the filler is hardened, thereby assembling the battery module 100. In some embodiments, the fixed rubber hardens before the filler.

[0082] In some embodiments, the fixing frame 30 is made of a transparent material, so that an operator can easily observe the filling state of the filler when filling and injecting the filler.

[0083] In some embodiments, the fixing frame 30 is made of a PET thermally conductive material, and can promptly dissipate heat emitted from the components on the relay board 20 to reduce the temperature of the battery module 100 .

[0084] An embodiment of the present invention further provides a battery pack, including a battery pack case, a circuit board provided in the battery pack case, a battery case, and the battery module 100 described above.

[0085] Referring to FIG. 5, an embodiment of the present application further provides a method for manufacturing a battery module 100, S01, providing an intermediate plate 20 to a cell assembly 10 and connecting the intermediate plate 20 to a tab 112 of the cell assembly 10; S02, providing a fixing frame 30 in the cell assembly 10, the fixing frame 30 having a housing chamber 34 for housing the relay plate 20 and at least a part of the cell assembly 10; S03: Providing a filler in a gap between the inside of the receiving chamber 34 and the cell assembly 10, and in a gap between the inside of the receiving chamber 34 and the inside of the relay plate 20.

[0086] Specifically, the fixed frame 30, at least a portion of the cell assemblies 10 and the relay plate 20 are arranged in an inverted manner, and the inverted arrangement of the fixed frame 30 means that the opening 345 of the storage chamber 34 of the fixed frame 30 is placed facing upward.The relay plate 20 and one end of the cell assembly 10 on which the relay plate 20 is provided are placed in the storage chamber 34 of the fixed frame 30 facing downward, and then the storage chamber 34 is filled with filler.

[0087] 6, in another embodiment of the present application, an unmanned vehicle 200 is provided, which includes an airframe 201 and a battery pack installed in the airframe 201 and supplying electricity to the airframe 201. The battery pack is the battery pack described above, and therefore a description thereof will be omitted here.

[0088] The battery module 100 of the present invention, the battery pack including the battery module 100, and the manufacturing method for the battery module 100 employ an inverted filling method to fill the accommodating chamber 34 with filler, thereby fixing the cell assembly 10 and the relay plate 20 to the fixing frame 30, which can better withstand shock, vibration, and dropping situations, protect the head of the cell assembly 10, and protect the welding equipment on the relay plate 20. In addition, the action of the accommodating chamber 34 is incorporated into inverted rubber injection, which, compared with full rubber injection, reduces the amount of filler used, reduces weight, increases energy density, and reduces costs. At the same time, the fixing rubber is inserted into the outlet hole 311, the fixing hole 312, and the harness hole 313, and then filled with a filler, so that the waterproof and dustproof ability of the battery module 100 can reach a level of IP67 or above. The entire fixing frame 30 is made of insulating material, which accommodates the parts outside the core body 111 of the cell assembly 10, the relay plate 20, and the harness 40, and does not leak outside the metal parts, and plays the role of insulation. The fixing frame 30 can be made lighter by using a lightweight material and providing a lightening groove. The fixing frame 30 adopts a thermal conductive material such as PET, which can also promptly dissipate the heat of the overflow member in the relay plate 20, and can reduce the temperature of the entire battery module 100. The transparent battery module 100 makes it possible to closely observe the internal rubber injection effect when injecting the inverted rubber, prevent rubber leakage, and perform inspection without the need for destruction and demolding.

[0089] The above embodiments are not limiting and are only used to describe the technical aspects of the present application. Although the present application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that the technical aspects of the present application can be modified or equivalently substituted without departing from the spirit and substance of the technical aspects of the present application. [Explanation of symbols]

[0090] 100 Battery Module 10 Cell Assembly 11 Battery Cell 111 Battery cell body 112 tabs 12 1st pole 13 2nd pole 17 Adhesive 20 Relay board 21 Tab hole 22 Support piece 30 Fixed Frame 31 Top Wall 311 Output hole 312 Fixed hole 313 Harness hole 314 Protective materials 315 1st side 316 2nd side 317 Through hole 32 Side wall 33 End Wall 34 Containment Room 341 Stopper stand 342 Rubber receiving groove 343 Undercut 3431 Undercut side wall 345 Aperture 40 Harness 41 Power Harness 42 Sampling Harness 200 drones 201 Aircraft

Claims

1. A cell assembly; an intermediate plate provided on the cell assembly and connected to a tab of the cell assembly; A filler material; A battery module comprising: the battery module further includes a fixing frame, the fixing frame being provided with an accommodation chamber, the fixing frame including a top wall, the relay plate and the cell assembly being provided on the same side of the top wall, and the fixing frame including an outlet hole penetrating the top wall; The intermediate plate and at least a part of the cell assembly are accommodated in the accommodation chamber, and a support piece is provided on the intermediate plate; The fixing frame further includes a relief groove, a fixing hole communicating with the outlet hole is provided in a side wall of the relief groove facing the outlet hole, one end of the power harness is connected to the cell assembly via the support piece, the other end of the power harness passes through the outlet hole and the fixing hole, and the other end of the power harness is provided on a side of the top wall away from the cell assembly, The battery module according to claim 1, wherein the filler is disposed in a gap between the inside of the accommodation chamber and the cell assembly and the relay plate.

2. The filler includes rubber, a fixed rubber that hardens before the filler is provided in the gap between the wire outlet hole and the power harness; 2. The battery module according to claim 1, wherein a fixing rubber that hardens before the filling material is provided in the gap between the fixing hole and the power harness.

3. The battery module according to claim 2 , wherein the support piece is received in the relief groove.

4. The battery module according to claim 3 , wherein the filler is provided in the escape groove.

5. The stationary frame further includes two side walls and two end walls; 2. The battery module according to claim 1, wherein the top wall, the two side walls and the two end walls define the receiving chamber.

6. The filler includes rubber, and the filler is filled into the storage chamber. The battery module according to claim 1 , wherein the filler fixes the intermediate plate, the cell assembly, and the fixing frame after solidification.

7. The cell assembly includes a plurality of battery cells; The battery cell includes a body and a tab provided on the body, The battery module according to claim 1 , wherein the relay plate is connected to the tab, and at least a portion of the body of the battery cell is accommodated in the accommodation chamber.

8. The battery module according to claim 7, characterized in that a stopper base is provided on the top wall within the storage chamber, and the stopper base abuts against a plate body to which the relay plate is not connected to the tab.

9. 9. The battery module according to claim 8, wherein the extension direction of the stopper base is perpendicular to the stacking direction of the battery cells to facilitate filling of the filler, and forms a flow path for filling the filler.

10. A battery pack including a battery case and a battery module, A battery pack, wherein the battery module is the battery module according to claim 1 .

11. A device comprising: a body; and a battery pack provided in the body; An unmanned aerial vehicle, characterized in that the battery pack supplies electricity to the airframe, and the battery pack is the battery pack described in claim 10.

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