CN118040005B - Annular battery module assembly process - Google Patents
Annular battery module assembly process Download PDFInfo
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- CN118040005B CN118040005B CN202410333872.3A CN202410333872A CN118040005B CN 118040005 B CN118040005 B CN 118040005B CN 202410333872 A CN202410333872 A CN 202410333872A CN 118040005 B CN118040005 B CN 118040005B
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- 238000000034 method Methods 0.000 title claims abstract description 47
- 230000000712 assembly Effects 0.000 claims description 34
- 238000000429 assembly Methods 0.000 claims description 34
- 230000017525 heat dissipation Effects 0.000 claims description 17
- 230000002093 peripheral effect Effects 0.000 claims description 11
- 238000005452 bending Methods 0.000 claims description 4
- 230000003014 reinforcing effect Effects 0.000 description 12
- 230000002787 reinforcement Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 7
- 210000001503 joint Anatomy 0.000 description 7
- 238000003032 molecular docking Methods 0.000 description 7
- 238000003466 welding Methods 0.000 description 7
- 239000012212 insulator Substances 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0404—Machines for assembling batteries
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
- H01M50/242—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries against vibrations, collision impact or swelling
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/507—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising an arrangement of two or more busbars within a container structure, e.g. busbar modules
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Secondary Cells (AREA)
Abstract
The invention relates to the technical field of batteries and discloses an assembly process of an annular battery module, which comprises the steps of arranging battery cores in a containing space in a one-to-one correspondence manner to form sector units; all the fan-shaped units are arranged along an annular path, and adjacent fan-shaped units are spliced to form the annular battery module. All the electric cores in the annular battery module structure are located in the accommodating space, the environments where different electric cores are located are the same, and the temperature difference between the electric cores at different positions in the annular battery module structure can be effectively reduced. Meanwhile, the environments of the battery cells at different positions in the module are the same, expansion forces between adjacent battery cells in the annular battery module can be offset, the influence of the expansion forces on the battery module is reduced, the annular battery module is formed by a plurality of fan-shaped units in a splicing and matching mode, the module structure and the module forming process can be simplified, and the module grouping efficiency is improved. Adjacent cells are separated by a bracket assembly to reduce the risk of thermal runaway of the cells in the event of localized battery thermal runaway.
Description
Technical Field
The invention relates to the technical field of batteries, in particular to an assembly process of an annular battery module.
Background
The current battery module group mode is that the batteries are stacked in series and parallel according to the requirement to form a square battery module structure, and the group mode leads to poor battery radiating effect of the middle part of the battery module, and the temperature of the battery of the middle part of the module is higher than the temperature of the batteries at two sides of the battery module, so that the temperature difference of the batteries at all positions in the battery module is larger, and the service life of the battery with high temperature in the battery module is relatively shorter. Meanwhile, the high-temperature battery can increase the risk of fire occurrence, so that personal safety and property safety hidden trouble are high. The battery can be accompanied with breathing expansion in the charge and discharge process, the battery generates expansion force to the two sides of the thickness direction of the battery, in order to reduce the influence of the expansion force on the structural stability of the battery module, the battery is connected in a hard connection mode such as welding, bolt fastening and the like in the prior art, so that the battery module is complex in structure, the forming process of the battery module is complex, and the grouping efficiency is low.
Disclosure of Invention
In view of the above, the present invention provides an assembly process of an annular battery module, so as to solve the problems of large temperature difference and complex forming process of the battery in the module caused by the grouping mode of the battery modules in the prior art.
In a first aspect, the invention provides an assembly process of an annular battery module, the annular battery module comprises a plurality of bracket components and a plurality of electric cores, the bracket components are internally provided with accommodating spaces, the cross section of the bracket components is fan-shaped, and the assembly process of the annular battery module comprises the following steps:
arranging the battery cells in the accommodating space in a one-to-one correspondence manner to form sector units;
and arranging all the fan-shaped units along an annular path, and splicing adjacent fan-shaped units to form the annular battery module.
The annular battery module assembly process has the beneficial effects that the fan-shaped units are spliced to form the annular battery module structure, all the electric cores in the annular battery module structure are positioned in the accommodating space, the environments of different electric cores are the same, the exposed surfaces of the different electric cores are the same, the temperature difference between the electric cores at different positions in the annular battery module structure can be effectively reduced, the thermal runaway risk of the electric cores is reduced, the service lives of the electric cores and the battery module are prolonged, the risk of fire occurrence is reduced, and therefore the personal safety and property safety are ensured. Meanwhile, the environments of the battery cells at different positions in the module are the same, expansion forces between adjacent battery cells in the annular battery module can be offset, the influence of the expansion forces on the battery module is reduced, the annular battery module is formed by a plurality of fan-shaped units in a splicing and matching mode, and compared with the prior art, the module is used for guaranteeing the strength of the module by adopting a hard connection mode such as welding, bolt fastening and the like, the module structure and the molding process of the module can be simplified, and the module grouping efficiency is improved. Adjacent cells are separated by the bracket component, the area range of thermal runaway can be reduced when the local battery is in thermal runaway, and the large-area fire risk is reduced, so that the harm of the thermal runaway of the cells is reduced, and the safety performance of the annular battery module structure is improved.
In an optional embodiment, the bracket assembly includes two supporting frames, and before the battery cells are arranged in the accommodating space in a one-to-one correspondence manner to form a fan-shaped unit, the bracket assembly further includes:
assembling two support frames to form the accommodating space between the two support frames.
The battery module has the advantages that each battery cell in the assembled module is located between two supporting frames, expansion forces between adjacent battery cells can be offset, influence of the expansion forces on the battery module is reduced, meanwhile, the stress of the battery cells at different positions is the same, and the consistency of the battery cells in the aging process is good.
In an alternative embodiment, each of the support frames comprises two support walls, and the cell comprises two large faces;
when the two supporting frames are assembled, the two supporting walls of each supporting frame are arranged at an included angle towards one side of the annular path, and the adjacent supporting frames are spaced apart to form the accommodating space between the adjacent supporting frames;
and respectively fixing the two large faces of the battery cell on the supporting walls of the adjacent supporting frames so as to arrange the battery cell in the accommodating space.
The electric core has the advantages that the large faces of the electric core are fixed on the supporting wall, heat generated by the electric core is conducted to the supporting wall to effectively dissipate heat of the electric core, the supporting frame simultaneously plays a role in supporting the electric core and dissipating heat of the electric core, and the two large faces of the electric core are fixed on the supporting wall to enable all fan-shaped units to be spliced to form the annular battery module.
In an alternative embodiment, the two large faces of the cell are adhesively secured to the support wall adjacent to the support frame.
In an alternative embodiment, before the two large faces of the battery cell are adhesively fixed on the supporting wall of the adjacent supporting frame, the method further comprises:
one surface of an elastic buffer piece is fixed on the large surface of the battery cell;
And when the two large faces of the battery cell are adhered and fixed on the supporting wall of the adjacent supporting frame, the other face of the elastic buffer piece is adhered and fixed on the supporting wall.
The elastic buffer piece is extruded by the support frame to be compressed and deformed, the dimensional tolerance on the thickness of the battery cell is eliminated through the elastic buffer piece, the battery cell is guaranteed to be better attached to the support wall, the heat dissipation effect of the battery cell is further guaranteed, and meanwhile the matching strength between the battery cell and the support frame and the stability of the whole structure of the battery module can be improved.
In an alternative embodiment, the annular battery module further includes a bus bar, the battery cell has a positive output terminal and a negative output terminal, and after splicing adjacent fan-shaped units to form the annular battery module, the annular battery module further includes:
And the positive electrode output end and the negative electrode output end of the battery cell are connected through the bus piece.
In an alternative embodiment, one of the two supporting frames of each group of the supporting frame components is provided with a plug-in part, and the other one of the two supporting frames of each group of the supporting frame components is provided with a matching part;
When the two support frames are assembled, the inserting part is in inserting fit with the matching part, the inner edge extending parts and the outer edge extending parts of the two support frames are butted to form the support frame assembly, and the accommodating space is formed inside the two support frames;
When all the fan-shaped units are arranged along an annular path, the inner edge extension parts and the outer edge extension parts of all the bracket components are abutted so that all the inner edge extension parts enclose an inner circumferential surface, and all the outer edge extension parts enclose an outer circumferential surface.
The annular battery module structure has the beneficial effects that the plugging part is plugged and matched with the matching part, and the annular battery module structure is formed after the inner edge extending parts and the outer edge extending parts of all the bracket components are butted, so that the battery module can be assembled quickly and conveniently, and the bracket components are convenient to disassemble.
In an alternative embodiment, the annular battery module structure further comprises an inner ring limiting member and an outer ring limiting member, wherein the cross sections of the inner ring limiting member and the outer ring limiting member are annular, and before all the fan-shaped units are distributed along an annular path, the annular battery module structure further comprises:
placing the inner ring limiting piece;
When all the fan-shaped units are distributed along an annular path, the inner edge extension parts of all the bracket components are distributed along the outer peripheral wall of the inner ring limiting piece;
after all the fan-shaped units are distributed along an annular path, the outer ring limiting part is sleeved outside the outer circumferential surface.
The annular battery module has the beneficial effects that the inner edge extension parts of all the bracket components are distributed along the outer peripheral wall of the inner ring limiting piece, so that the bracket components are conveniently and rapidly assembled into an annular structure, and the assembly efficiency of the annular battery module is improved. After the assembly, the inner ring limiting piece limits the support assembly to move towards the inner side of the annular path, the outer ring limiting piece limits the support assembly to move towards the outer side of the annular path, the inner ring limiting piece and the outer ring limiting piece are matched to prevent the support assembly and the battery cell from radially moving, and the stability of the annular battery module structure is guaranteed.
In an alternative embodiment, the annular battery module structure further includes a bottom support plate, and the annular battery module assembly process further includes:
And fixing the bottom supporting plate on the inner ring limiting piece and/or the outer ring limiting piece, and enabling the bottom supporting plate to be supported at the bottoms of all the bracket components.
In an optional implementation manner, the top and the bottom of the battery cell are respectively provided with a tab, the top and the bottom of the support frame are respectively provided with a first support portion and a second support portion, and after the fan-shaped units are spliced to form the annular battery module, the battery module further comprises:
and bending the lugs of the adjacent battery cells in opposite directions, connecting the adjacent lugs, and supporting the lugs at the top of the battery cells on the first supporting part and the lugs at the bottom of the battery cells on the second supporting part.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is an exploded view of an annular battery module assembled by an annular battery module assembling process according to an embodiment of the present invention;
fig. 2 is a schematic view of an annular battery module assembled by an annular battery module assembling process according to an embodiment of the present invention;
Fig. 3 is a top view of an annular battery module assembled by an assembly process of an annular battery module according to an embodiment of the present invention, with an insulator and a part of a fan-shaped unit removed;
Fig. 4 is a plan view of an annular battery module assembled by an assembly process of the annular battery module according to an embodiment of the present invention, with an insulator removed;
FIG. 5 is a schematic view of the support stand of FIG. 1;
fig. 6 is an exploded view of a ring-shaped battery module assembled by another ring-shaped battery module assembling process according to an embodiment of the present invention;
FIG. 7 is an enlarged view of a portion A of FIG. 6;
fig. 8 is a schematic view of a ring-shaped battery module assembled by another ring-shaped battery module assembling process according to an embodiment of the present invention;
Fig. 9 is a transverse sectional view of a ring-shaped battery module assembled by another ring-shaped battery module assembling process according to an embodiment of the present invention;
Fig. 10 is a transverse sectional view of a ring-shaped battery module assembled by another ring-shaped battery module assembling process according to an embodiment of the present invention;
Fig. 11 is a partial enlarged view of a portion B in fig. 10;
Fig. 12 is an exploded view of a fan-shaped unit in a ring-shaped battery module assembled by another ring-shaped battery module assembling process according to an embodiment of the present invention;
Fig. 13 is a schematic view of an annular battery module assembled by an assembly process of an annular battery module according to another embodiment of the present invention after two fan-shaped units are spliced;
fig. 14 is an exploded view of two fan-shaped units in a ring-shaped battery module assembled by a further ring-shaped battery module assembling process according to an embodiment of the present invention;
fig. 15 is a partial enlarged view of a portion C in fig. 14.
Reference numerals illustrate:
1. Fan-shaped unit 101, accommodating space, 102, supporting frame 1021, supporting wall 1022, heat dissipation area 1023, connecting post 1024, mounting hole 1025, middle reinforcing part 1026, plug-in part 1027, matching part 1028, inner edge extension part 1029, outer edge extension part 10210, first supporting part 10211, second supporting part 10212, butt joint part 10213, transverse reinforcing part 10214, vertical reinforcing part 10215, butt joint plate 103, electric core 1031, positive pole lug 1032, negative pole lug 2, bus bar 3, insulating part 4, bottom buffer part 5, inner side circumferential surface 6, outer side circumferential surface 7, inner ring limiting part 8, outer ring limiting part 9, bottom supporting plate 10, positive pole bus part 11, negative pole bus part 12, insulating mounting seat.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Embodiments of the present invention are described below with reference to fig. 1 to 15.
According to an embodiment of the present invention, in one aspect, there is provided an assembly process of an annular battery module including a plurality of holder assemblies and a plurality of electric cells 103, the holder assemblies having an accommodating space 101 therein, the holder assemblies having a sector-shaped cross section, the assembly process of the annular battery module including:
the battery cores 103 are arranged in the accommodating space 101 in a one-to-one correspondence manner to form a fan-shaped unit 1;
all the fan-shaped units 1 are arranged along a circular path, and adjacent fan-shaped units 1 are spliced to form a circular battery module.
According to the annular battery module assembly process, the fan-shaped units 1 are spliced to form the annular battery module structure, all the electric cores 103 in the annular battery module structure are located in the accommodating space 101, the environments of the different electric cores 103 are the same, the exposed surfaces of the different electric cores 103 are the same, the temperature difference between the electric cores 103 at different positions in the annular battery module structure can be effectively reduced, the thermal runaway risk of the electric cores 103 is reduced, the service lives of the electric cores 103 and the battery module are prolonged, the fire occurrence risk is reduced, and therefore personal safety and property safety are guaranteed. Meanwhile, the environments of the battery cells 103 at different positions in the module are the same, expansion forces between adjacent battery cells 103 in the annular battery module can be offset, the influence of the expansion forces on the battery module is reduced, the annular battery module is formed by a plurality of fan-shaped units 1 in a splicing and matching mode, and compared with the prior art, the module is used for guaranteeing the strength of the module in a hard connection mode such as welding, bolt fastening and the like, the module structure and the molding process of the module can be simplified, and the module grouping efficiency is improved. Adjacent cells 103 are separated by the bracket component, so that the area range of thermal runaway can be reduced when the local battery is in thermal runaway, and the risk of large-area fire is reduced, thereby reducing the harm of the thermal runaway of the cells 103 and improving the safety performance of the annular battery module structure.
Optionally, in one embodiment, the bracket assembly includes two supporting frames 102, and before the battery cells 103 are disposed in the accommodating space 101 in a one-to-one correspondence manner to form the fan-shaped unit 1, the bracket assembly further includes:
The two support frames 102 are assembled to form the accommodating space 101 between the two support frames 102.
Each cell 103 in the assembled module is positioned between two support frames 102, expansion forces between adjacent cells 103 can be mutually offset, the influence of the expansion forces on the battery module is reduced, meanwhile, the stress of the cells 103 at different positions is the same, and the consistency of the cells 103 in the aging process is good.
Alternatively, in one embodiment, as shown in fig. 1 to 5, each support frame 102 includes two support walls 1021, the battery cell 103 includes two large faces, when the two support frames 102 are assembled, the two support walls 1021 of each support frame 102 are arranged at an included angle towards one side of the center of the circular path, adjacent support frames 102 are spaced apart to form a containing space 101 between the adjacent support frames 102, and the two large faces of the battery cell 103 are respectively fixed on the support walls 1021 of the adjacent support frames 102 to set the battery cell 103 in the containing space 101. The large faces of the battery cells 103 are fixed on the supporting wall 1021, heat generated by the battery cells 103 is conducted to the supporting wall 1021 to effectively dissipate heat of the battery cells 103, the supporting frame 102 simultaneously plays roles of supporting the battery cells 103 and dissipating heat of the battery cells 103, and the two large faces of the battery cells 103 are fixed on the supporting wall 1021 so that all the fan-shaped units 1 are spliced to form the annular battery module.
Optionally, in one embodiment, two large faces of the battery cell 103 are adhered and fixed on the supporting wall 1021 of the adjacent supporting frame 102, so that the battery cell 103 is fixed conveniently and quickly.
In one embodiment, before the two large faces of the battery cells 103 are adhesively fixed to the support walls 1021 of the adjacent support frames 102, the method further comprises:
one surface of the elastic buffer piece is fixed on the large surface of the battery cell 103;
When the two large faces of the battery cell 103 are adhesively fixed to the support wall 1021 of the adjacent support frame 102, the other face of the elastic buffer member is adhesively fixed to the support wall 1021 to adhesively fix the two large faces of the battery cell 103 to the support wall 1021 of the adjacent support frame 102.
The elastic buffer piece is extruded by the support frame 102 to be compressed and deformed, the dimensional tolerance on the thickness of the battery cell 103 is eliminated through the elastic buffer piece, the battery cell 103 is guaranteed to be better attached to the support wall 1021, the heat dissipation effect of the battery cell 103 is guaranteed, and meanwhile the matching strength between the battery cell 103 and the support frame 102 and the stability of the whole structure of the battery module can be improved.
Alternatively, the two sides of the elastic buffer are respectively adhered to the large surface of the cell 103 and the supporting wall 1021. For example, in one embodiment, the elastic buffer is made of foam. The thickness of the elastic buffer member is thinner, so that the heat of the battery cell 103 can be directly and quickly transferred to the support frame 102.
In one embodiment, the annular battery module further includes a bus bar, and the cell 103 has a positive output terminal and a negative output terminal, and after the adjacent fan-shaped units 1 are spliced to form the annular battery module, further includes:
the positive electrode output end and the negative electrode output end of the battery cell 103 are connected through the current collecting piece so as to output the electric energy of the annular battery module.
Specifically, in this embodiment, the positive electrode output end and the negative electrode output end are a positive electrode post and a negative electrode post disposed on the electric core portion, respectively, and the busbar member includes a busbar 2, and the busbar 2 connects the positive electrode post and the negative electrode post of the adjacent electric core.
The annular battery module further includes an insulating member 3, and after connecting the positive electrode post and the negative electrode post at the top of the adjacent battery cell 103 through the bus bar 2, further includes:
the insulator 3 is placed over the top of all the cells 103.
The insulator 3 is isolated at the upper part of the battery cell 103, and the insulator 3 plays an insulating role to prevent short circuit.
Alternatively, the insulating member 3 is an insulating cover plate having a ring shape, and the inner peripheral wall and the outer peripheral wall thereof are provided with a first burring portion and a second burring portion, respectively. The first flanging part is adhered to one surface of the battery cell 103 facing the circle center of the annular path, and the second flanging part is adhered to one surface of the battery cell 103 facing away from the circle center of the annular path.
As shown in fig. 5, the two supporting walls 1021 of each supporting frame 102 are spaced apart to form a heat dissipation area 1022, so that the battery cells 103 and the modules dissipate heat through the heat dissipation area 1022, and the heat dissipation effect of the battery cells 103 and the battery modules is improved.
Optionally, in one embodiment, the annular battery module further includes an annular bottom plate (not shown in the figure) disposed at the bottom of the support frame 102, and the heat dissipation area 1022 is provided with a connection portion therein, and the support frame 102 is fixedly connected to the annular bottom plate through the connection portion, so as to limit movement of the support frame 102, and fix the battery cells 103 on the annular bottom plate, thereby ensuring stability of the overall structure of the annular battery module.
Alternatively, in one embodiment, as shown in fig. 5, the connection part includes a connection post 1023, the connection post 1023 extends along the height direction of the support frame 102, a mounting hole 1024 is provided inside the connection post 1023, the mounting hole 1024 extends along the height direction of the connection post 1023, a fastener is adapted to pass through the mounting hole 1024 to fix the support frame 102 on the annular bottom plate, and the connection post 1023 is supportedly connected between the two support walls 1021. The connecting column 1023 not only serves as a fixing fulcrum of a fastener, but also plays a role of supporting the supporting wall 1021, so that the stability of the whole structure of the supporting frame 102 can be improved, and the supporting frame 102 is ensured to stably support the battery cell 103.
As shown in fig. 5, the two support walls 1021 of the support frame 102 are integrally disposed, and a middle reinforcement portion 1025 is disposed on a side of the support wall 1021 facing the outside of the annular path, the middle reinforcement portion 1025 extends toward the inside of the heat dissipation area 1022, and the middle reinforcement portions 1025 on the two support walls 1021 of the support frame 102 are connected to a side facing the inside of the heat dissipation area 1022. The whole setting of two supporting walls 1021 guarantees the stability of support frame 102 structure, and the interval distance is big between two supporting walls 1021 towards the one side in annular route outside, through setting up middle reinforcement portion 1025 to two middle reinforcement portions 1025 are connected towards the inside one side of heat dissipation area 1022, thereby make two middle reinforcement portions 1025 support between supporting walls 1021, increase the stability of support frame 102, guarantee annular battery module's bulk strength.
In one embodiment, the support 102 is a metal support 102, and the metal support 102 has a good heat dissipation effect, so that the heat dissipation effect on the battery cell 103 can be improved.
The annular battery module structure further comprises an acquisition plate, the busbar 2 and the acquisition plate are integrally arranged, and the busbar 2 is connected with the electrode post of the battery cell 103 through laser welding.
As shown in fig. 1 and 2, the bottom of all the supporting frames 102 and the bottom of the battery cell are further provided with a bottom buffer member 4, so as to play a role in buffering and protecting the battery module and improve the impact resistance of the overall structure of the battery module.
Optionally, the bottom buffer 4 is annular, and the material of the bottom buffer 4 is foam.
The assembly process of the annular battery module is as follows:
Adhering the bottom buffer 4 to the annular bottom plate;
The elastic buffer parts are stuck on two large surfaces of the battery cell 103, and then the elastic buffer parts on the two large surfaces of the battery cell 103 are respectively stuck on two side supporting walls 1021 to form a fan-shaped unit 1;
sequentially bonding the battery cores 103 on the supporting wall 1021 to splice a plurality of fan-shaped units 1 along an annular path to form an annular structure;
The support frame 102 is fixed on the annular bottom plate through bolts;
welding the busbar 2 and the acquisition plate on the pole;
finally, the first flanging part and the second flanging part of the insulating cover plate are adhered to the battery cell 103.
As shown in fig. 6 to 15, in one embodiment, one of the two support frames 102 of each group of support assemblies is provided with a plugging portion 1026, and the other one of the two support frames 102 of each group of support assemblies is provided with a matching portion 1027, both ends of the support frame 102 are respectively provided with an inner edge extension portion 1028 and an outer edge extension portion 1029, and the inner edge extension portion 1028 and the outer edge extension portion 1029 are arc surfaces;
When the two support frames 102 are assembled, the inserting part 1026 is inserted and matched with the matching part 1027, the inner edge extension parts 1028 of the two support frames 102 and the outer edge extension parts 1029 of the two support frames 102 are butted to form a support assembly, and the accommodating space 101 is formed inside the two support frames 102;
when all fan-shaped units 1 are arranged along an annular path, the inner edge extension 1028 of all adjacent bracket assemblies and the outer edge extension 1029 of all adjacent bracket assemblies are abutted so that all inner edge extension 1028 encloses an inner circumferential surface 5 and all outer edge extension 1029 encloses an outer circumferential surface 6.
The inserting part 1026 is inserted and matched with the matching part 1027, and the annular battery module structure is formed after the inner edge extension part 1028 and the outer edge extension part 1029 of all the bracket components are butted, so that the battery module can be assembled quickly and conveniently, and the bracket components are convenient to disassemble.
As shown in fig. 6 and 8, the annular battery module structure further includes an inner ring limiter 7 and an outer ring limiter 8, wherein the cross sections of the inner ring limiter 7 and the outer ring limiter 8 are annular, and before all the fan-shaped units 1 are arranged along an annular path, the annular battery module structure further includes:
Placing an inner ring limiting piece 7;
When all the fan-shaped units 1 are arranged along an annular path, the inner edge extension 1028 of all the bracket components are arranged along the outer peripheral wall of the inner ring limiting piece 7;
after all the fan-shaped units 1 are arranged along an annular path, the outer ring limiting piece 8 is sleeved outside the outer circumferential surface 6.
The inner edge extension portions 1028 of all the bracket components are distributed along the outer peripheral wall of the inner ring limiting piece 7, so that the bracket components are conveniently and rapidly assembled into an annular structure, and the assembly efficiency of the annular battery module is improved. After assembly, the inner ring limiting piece 7 limits the support assembly to move towards the inner side of the annular path, the outer ring limiting piece 8 limits the support assembly to move towards the outer side of the annular path, the inner ring limiting piece 7 and the outer ring limiting piece 8 are matched to prevent the support assembly and the battery cell 103 from radially moving, and stability of the annular battery module structure is guaranteed.
Optionally, in one embodiment, the inner ring limiter 7 is cylindrical, and the outer peripheral wall of the inner ring limiter 7 abuts against the inner peripheral surface 5, and one inner ring limiter 7 abuts against the inner edge extension 1028 of all the bracket assemblies simultaneously, so as to simplify the structure of the inner ring limiter 7 and the overall structure of the annular battery module, and facilitate assembling the annular battery module structure.
Optionally, the inner ring limiting member 7 is in a hollow cylindrical shape, so that a cavity structure is formed in the middle of the annular battery module, and heat dissipation of the battery cell 103 and the battery module is facilitated. Meanwhile, the inner ring limiting piece 7 with the hollow structure can reduce the overall weight of the module and save the material cost.
Optionally, in one embodiment, as shown in fig. 6 and 8, the outer ring limiter 8 includes a plurality of limit rings, the plurality of limit rings are sleeved on the outer circumferential surface 6, the plurality of limit rings are arranged at intervals along the height direction of the outer circumferential surface 6, the support component is limited to move outwards by the plurality of limit rings, compared with the outer ring limiter 8, the outer ring limiter 8 is provided with a limit structure which penetrates through the height of the support component integrally up and down, the plurality of limit rings are arranged, the material is saved, meanwhile, the single limit ring is small in size and light in structure, and is convenient to sleeve the single limit ring outside the support component, so that the assembly efficiency of the annular battery module is improved, compared with the outer ring limiter 8 which completely wraps the outer circumferential surface 6 of the support component, and gaps among the plurality of limit rings are favorable for heat dissipation of the battery core 103 and the support component.
As shown in fig. 7, 8 and 12-14, grooves are formed in the peripheral wall of the outer edge extension 1029 of the support frame 102, the grooves on all the support frames 102 form an annular groove, the limit ring is sleeved in the annular groove, and the limit ring is convenient to install and fix.
As shown in fig. 11, in the charging process of the battery cells 103, the left battery cell 103 generates expansion forces F1 and F2, the right battery cell 103 generates expansion forces F3 and F4, the expansion forces F2 and F3 cancel each other to cancel most of the expansion forces, the rest part of the expansion forces F5 which are not canceled acts on the annular limiting ring, and the limiting ring decomposes F5, so that the F5 is uniformly distributed on the limiting ring, the influence of the expansion forces of the battery cells 103 on the battery module is effectively reduced, and the stability of the overall structure of the battery module is ensured.
Optionally, the limit ring is a steel ring.
In one embodiment, the annular battery module structure further includes a bottom support plate 9, and the annular battery module assembly process further includes:
The bottom support plate 9 is fixed to the inner ring limiter 7 and/or the outer ring limiter 8, and the bottom support plate 9 is supported at the bottom of all the bracket assemblies.
The bottom support plate 9 is supported at the bottoms of all the support assemblies, so that the support assemblies are prevented from falling downwards under the action of gravity in the module moving process, and the overall stability of the annular battery module structure is ensured.
Specifically, the bottom support plate 9 has an annular plate shape, and the bottom support plate 9 is fixed to the bottom of the inner ring stopper 7 by bolts.
Optionally, in one embodiment, the top and bottom of the battery cell 103 are respectively provided with a tab, the top and bottom of the support frame 102 are respectively provided with a first support portion 10210 and a second support portion 10211, and after the adjacent fan-shaped units 1 are spliced to form the annular battery module, the method further includes:
The tabs of the adjacent cells 103 are bent in opposite directions, and then the adjacent tabs are connected, and the tabs at the top of the cells 103 are supported on the first support portion 10210, and the tabs at the bottom of the cells 103 are supported on the second support portion 10211. The first supporting portion 10210 and the second supporting portion 10211 are used for supporting the tab, preventing the tab from being damaged by pressure or bending and breaking, and the two supporting portions play a role in supporting and protecting the tab.
As shown in fig. 12 to 14, the support frame 102 includes an abutment plate 10215, the abutment plate 10215 is arranged along a radial direction of the annular path, an inner edge extension 1028 is disposed on a radial inner end surface of the abutment plate 10215, an outer edge extension 1029 is disposed on a radial outer end surface of the abutment plate 10215, the inner edge extension 1028 and the outer edge extension 1029 are both arc-shaped, in each set of support frame components, the inner edge extension 1028 of the two support frames 102 are abutted, the outer edge extension 1029 of the two support frames 102 are abutted so as to space the two abutment plates 10215, an accommodating space 101 is defined between the two inner edge extension 1028, the two outer edge extension 1029 and the two abutment plates 10215, after the abutting, the two inner edge extension 1028 form an arc-shaped surface at the radial inner end of the support frame components, and the two outer edge extension 1029 form an arc-shaped surface at the radial outer end of the support frame components, so that the outer profiles of the support frame components form a fan-shaped structure, and the multiple sets of support frame components are abutted to form an annular structure.
The inner edge extensions 1028 of adjacent bracket assemblies are butted, and the outer edge extensions 1029 of adjacent bracket assemblies are butted to space the butted plates 10215 of adjacent bracket assemblies, so that a cavity area is formed between the butted plates 10215 of adjacent brackets, adjacent cells 103 can be spaced, and the heat dissipation effect of the cells 103 is improved.
The inner edge extension 1028 extends beyond the abutment plates 10215 along the circumferential direction of the annular path, the outer edge extension 1029 extends beyond the abutment plates 10215 along the circumferential direction of the annular path, the opposite ends of the inner edge extensions 1028 of the two support frames 102 of each set of bracket assemblies, the opposite ends of the outer edge extensions 1029 of the two support frames 102 abut to each other to space the two abutment plates 10215 apart, the opposite ends of the inner edge extensions 1028 of the two support frames 102 of each set of bracket assemblies, and the opposite ends of the outer edge extensions 1029 of the two support frames 102 abut to the support frames 102 of the adjacent set to space the abutment plates 10215 of the support frames 102 of the adjacent set. The circumferential length of the outer edge extension 1029 facing the outer side of the accommodating space 101 is greater than the circumferential length of the inner edge extension 1028 facing the outer side of the accommodating space 101, so that the two support frames 102 are spliced to form a fan-shaped structure.
In one embodiment, as shown in fig. 12, a lateral reinforcing portion 10213 is disposed between a side of the inner edge extension portion 1028 facing away from the accommodating space 101 and a side of the outer edge extension portion 1029 facing away from the accommodating space 101, a vertical reinforcing portion 10214 is further disposed on a side of the abutment plate 10215 facing away from the accommodating space 101, and the lateral reinforcing portion 10213 and the vertical reinforcing portion 10214 are used for reinforcing the strength of the support frame 102, so that the overall strength of the assembled battery modules can be ensured. The lateral stiffening 10213 extends horizontally and the vertical stiffening 10214 extends vertically.
Alternatively, the lateral reinforcement portions 10213 and the vertical reinforcement portions 10214 are each provided in plurality, the plurality of lateral reinforcement portions 10213 are arranged at intervals in the height direction of the abutting plate 10215, and the plurality of vertical reinforcement portions 10214 are arranged at intervals in the radial extending direction of the abutting plate 10215.
In one embodiment, the abutting plates 10215 of the two supporting frames 102 of each group of the bracket assemblies are parallel to each other, so as to form a containing space 101 with a rectangular cross section with the inner edge extension 1028 and the outer edge extension 1029, and the containing space 101 can contain a square battery cell 103 or a battery cell 103 with a rectangular cross section such as a soft package battery cell 103.
The first supporting portion 10210 is disposed on the lateral reinforcing portion 10213 of the top layer, the second supporting portion 10211 is disposed on the lateral reinforcing portion 10213 of the lowermost layer, and the lateral reinforcing portion 10213 and the vertical reinforcing portion 10214 are both located on a side of the abutting plate 10215 facing away from the accommodating space 101.
The matching portion 1027 is a plugging hole, and the plugging portion 1026 is plugged in the plugging hole, so as to realize the butt joint of the two support frames 102. The butt joint part 10212 is arranged on one support frame 102 in each group of support assemblies, the butt joint holes are formed in the support frames 102 in the adjacent groups, the butt joint parts 10212 are spliced in the butt joint holes, and the splicing of the adjacent support assemblies is realized, so that the rapid splicing of the support frames 102 and the support assemblies is ensured, and the assembly efficiency of the battery module is improved.
Optionally, in a bracket assembly, the inserting portion 1026 and the inserting hole are respectively disposed on the two abutting plates 10215, two inserting portions 1026 are disposed on the upper portion of one abutting plate 10215, two inserting portions 1026 are disposed at the bottom of the abutting plate 10215, an inserting hole is disposed at a position corresponding to the other abutting plate 10215, and stability of the structure of the support frame 102 after being spliced can be improved through cooperation of the plurality of inserting portions 1026 and the inserting hole.
Optionally, in one embodiment, in one bracket assembly, two docking portions 10212 are disposed on the outer walls of the radially extending plates of the first supporting portion 10210 and the radially extending plates of the second supporting portion 10211 of one supporting frame 102, docking holes are disposed on the radially extending plates of the adjacent supporting frame 102, the docking portions 10212 are clamped in the docking holes, and docking of the adjacent bracket assemblies is achieved through cooperation of the plurality of docking portions 10212 and the docking holes, so that stability of the spliced structure of the bracket assemblies can be improved.
As shown in fig. 13 to 15, in the present embodiment, the bus bar of the ring-shaped battery module structure includes a positive electrode bus bar 10 and a negative electrode bus bar 11, all the cells 103 are connected in series, the positive electrode output terminal includes a positive electrode tab 1031 provided at one end of the cells, and the negative electrode output terminal includes a negative electrode tab 1032 provided at the other end of the cells. The top and bottom lugs of the battery cells 103 are bent back to back, the positive electrode output ends of all the battery cells 103 are connected with the positive electrode bus bar 10, the negative electrode output ends of all the battery cells 103 are connected with the negative electrode bus bar 11, and electric energy of the battery module is output through the positive electrode bus bar 10 and the negative electrode bus bar 11.
The positive electrode tabs 1031 and the negative electrode tabs 1032 of the adjacent cells 103 are arranged in a vertically staggered manner, namely, the left and right adjacent cells 103, if the top of the left cell 103 is the positive electrode tab 1031 and the bottom is the negative electrode tab 1032, the top of the right cell 103 is the negative electrode tab 1032 and the bottom is the positive electrode tab 1031, so that the serial connection of all the cells 103 is realized through tab bending.
As shown in fig. 14, in the two sets of bracket assemblies, the positive electrode tab 1031 at the top of the battery cell 103 in the left bracket assembly is bent rightward, the negative electrode tab 1032 at the bottom of the battery cell 103 is bent leftward, the negative electrode tab 1032 at the top of the battery cell 103 in the right bracket assembly is bent leftward, the negative electrode tab 1032 at the bottom of the left battery cell 103 is bent opposite to the positive electrode tab 1031 at the bottom of the battery cell 103 at the left side thereof, and the positive electrode tab 1031 is welded with the negative electrode tab 1032, so as to realize the series connection of the battery cells 103.
As shown in fig. 13 to 15, the annular battery module structure further includes an insulating mounting seat 12, the insulating mounting seat 12 includes two support platforms, a boss portion is disposed between the two support platforms, the positive electrode current collector 10 is disposed on the support platform on the left side of the boss portion, the negative electrode current collector 11 is disposed on the support platform on the right side of the boss portion, the insulating mounting seat 12 is made of an insulating material, and the boss portion insulates the positive electrode current collector 10 and the negative electrode current collector 11 from each other. The positive electrode tab 1031 at the end of all the cells 103 connected in series is connected to the positive electrode current collector 10, and the negative electrode tab 1032 at the end of all the cells 103 connected in series is connected to the negative electrode current collector 11. The insulating mounting base 12 is clamped on the first supporting portions 10210 at the tops of two adjacent sets of bracket assemblies.
In other embodiments, the cells 103 in the module may also be connected in parallel.
As shown in fig. 6 and 8, the ring-shaped battery module structure further includes an insulating upper cover and an insulating base, the insulating upper cover covers the tops of all the bracket assemblies and all the battery cells 103, the insulating base covers the bottoms of all the bracket assemblies and all the battery cells 103, the insulating upper cover and the insulating base serve as a junction of the lugs, and the positive electrode current collecting member 10 and the negative electrode current collecting member 11 play an insulating role with the outside. The insulating cover plate and the insulating base are made of insulating materials.
The assembly process of the annular battery module is as follows:
The inserting part 1026 of the support frame 102 is inserted and matched with the matching part 1027 to form a support assembly;
placing the battery cell 103 in the accommodating space 101 of the bracket assembly to form a fan-shaped unit 1;
Placing an inner ring limiting piece 7;
Arranging the inner edge extension 1028 of all the bracket components along the outer peripheral wall of the inner ring limiting piece 7;
The outer ring limiting piece 8 is sleeved outside the outer ring circumferential surfaces of all the bracket components;
Fixing a bottom supporting plate 9 on the inner ring limiting piece 7, wherein the bottom supporting plate 9 is supported at the bottoms of all bracket components;
Welding the positive electrode tab 1031 at the tail end of the battery cells 103 connected in series on the positive electrode bus piece 10, and welding the negative electrode tab at the tail end of the battery cells 103 connected in series on the negative electrode bus piece 11;
An insulating upper cover is covered on the tops of all the bracket assemblies and all the battery cells 103, and an insulating base is covered on the bottoms of all the bracket assemblies and all the battery cells 103.
Although embodiments of the present invention have been described in connection with the accompanying drawings, various modifications and variations may be made by those skilled in the art without departing from the spirit and scope of the invention, and such modifications and variations fall within the scope of the invention as defined by the appended claims.
Claims (6)
1. The annular battery module assembly process is characterized by comprising a plurality of bracket assemblies and a plurality of electric cores, wherein the bracket assemblies are internally provided with accommodating spaces, the cross sections of the bracket assemblies are fan-shaped, and the annular battery module assembly process comprises the following steps:
arranging the battery cells in the accommodating space in a one-to-one correspondence manner to form sector units;
Arranging all the fan-shaped units along an annular path, and splicing adjacent fan-shaped units to form an annular battery module;
the support assembly comprises two support frames, and the support frames are arranged in the accommodating space in a one-to-one correspondence manner before fan-shaped units are formed, and further comprises:
Assembling two support frames to form the accommodating space between the two support frames;
Each supporting frame comprises two supporting walls, and each cell comprises two large faces;
when the two supporting frames are assembled, the two supporting walls of each supporting frame are arranged at an included angle towards one side of the annular path, and the adjacent supporting frames are spaced apart to form the accommodating space between the adjacent supporting frames;
Two large faces of the battery cell are adhered and fixed on the supporting wall of the adjacent supporting frame, so that the battery cell is arranged in the accommodating space;
The annular battery module further comprises an annular bottom plate, the annular bottom plate is arranged at the bottom of the supporting frames, two supporting walls of each supporting frame are spaced apart to form a heat dissipation area, a connecting portion is arranged in the heat dissipation area, and the supporting frames are fixedly connected to the annular bottom plate through the connecting portion.
2. The assembly process of the ring-shaped battery module according to claim 1, further comprising, before adhesively fixing the two large faces of the battery cells to the support walls of the adjacent support frames:
one surface of an elastic buffer piece is fixed on the large surface of the battery cell;
And when the two large faces of the battery cell are adhered and fixed on the supporting wall of the adjacent supporting frame, the other face of the elastic buffer piece is adhered and fixed on the supporting wall.
3. The assembly process of the ring battery module according to claim 1 or 2, wherein the ring battery module further comprises a bus bar, the battery cell has a positive electrode output end and a negative electrode output end, and after splicing adjacent fan-shaped units to form the ring battery module, further comprising:
And the positive electrode output end and the negative electrode output end of the battery cell are connected through the bus piece.
4. The annular battery module assembly process is characterized by comprising a plurality of bracket assemblies and a plurality of electric cores, wherein the bracket assemblies are internally provided with accommodating spaces, the cross sections of the bracket assemblies are fan-shaped, and the annular battery module assembly process comprises the following steps:
arranging the battery cells in the accommodating space in a one-to-one correspondence manner to form sector units;
Arranging all the fan-shaped units along an annular path, and splicing adjacent fan-shaped units to form an annular battery module;
the support assembly comprises two support frames, and the support frames are arranged in the accommodating space in a one-to-one correspondence manner before fan-shaped units are formed, and further comprises:
Assembling two support frames to form the accommodating space between the two support frames;
one of the two support frames of each support frame assembly is provided with a plug-in part, and the other one of the two support frames of each support frame assembly is provided with a matching part;
When the two support frames are assembled, the inserting part is in inserting fit with the matching part, the inner edge extending parts and the outer edge extending parts of the two support frames are butted to form the support frame assembly, and the accommodating space is formed inside the two support frames;
When all the fan-shaped units are arranged along an annular path, the inner edge extension parts and the outer edge extension parts of all the bracket components are abutted so that all the inner edge extension parts enclose an inner circumferential surface, and all the outer edge extension parts enclose an outer circumferential surface;
The annular battery module structure further comprises an inner ring limiting part and an outer ring limiting part, wherein the cross sections of the inner ring limiting part and the outer ring limiting part are annular, and before all the fan-shaped units are distributed along an annular path, the annular battery module structure further comprises:
placing the inner ring limiting piece;
When all the fan-shaped units are distributed along an annular path, the inner edge extension parts of all the bracket components are distributed along the outer peripheral wall of the inner ring limiting piece;
after all the fan-shaped units are distributed along an annular path, the outer ring limiting part is sleeved outside the outer circumferential surface.
5. The assembly process of the annular battery module according to claim 4, wherein the annular battery module structure further comprises a bottom support plate, and the assembly process of the annular battery module further comprises:
And fixing the bottom supporting plate on the inner ring limiting piece and/or the outer ring limiting piece, and enabling the bottom supporting plate to be supported at the bottoms of all the bracket components.
6. The assembly process of the annular battery module according to claim 4 or 5, wherein the top and the bottom of the battery cell are respectively provided with a tab, the top and the bottom of the support frame are respectively provided with a first support portion and a second support portion, and after splicing adjacent fan-shaped units to form the annular battery module, the assembly process further comprises:
and bending the lugs of the adjacent battery cells in opposite directions, connecting the adjacent lugs, and supporting the lugs at the top of the battery cells on the first supporting part and the lugs at the bottom of the battery cells on the second supporting part.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102386342A (en) * | 2010-09-01 | 2012-03-21 | 珠海银通新能源有限公司 | Shell plate and lithium ion battery using same |
| CN210576055U (en) * | 2019-06-06 | 2020-05-19 | 宁波利维能储能系统有限公司 | Laminate polymer battery module |
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| JP5988954B2 (en) * | 2013-11-25 | 2016-09-07 | 大塚ポリテック株式会社 | Seal structure for packing and battery module |
| EP2950381B1 (en) * | 2014-05-28 | 2016-12-14 | EM Microelectronic-Marin SA | Smart battery with a circuit for managing the input voltage, and method for manufacturing the battery |
| CN212033097U (en) * | 2020-05-25 | 2020-11-27 | 恒大新能源技术(深圳)有限公司 | Battery cell, battery module and power battery system |
| CN215816030U (en) * | 2021-07-30 | 2022-02-11 | 湖北亿纬动力有限公司 | Annular energy storage box |
| CN218731385U (en) * | 2022-10-27 | 2023-03-24 | 楚能新能源股份有限公司 | Laminate polymer battery module |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102386342A (en) * | 2010-09-01 | 2012-03-21 | 珠海银通新能源有限公司 | Shell plate and lithium ion battery using same |
| CN210576055U (en) * | 2019-06-06 | 2020-05-19 | 宁波利维能储能系统有限公司 | Laminate polymer battery module |
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