CN108666494B - Large module group structure of flexible soft-package battery - Google Patents
Large module group structure of flexible soft-package battery Download PDFInfo
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- CN108666494B CN108666494B CN201810713345.XA CN201810713345A CN108666494B CN 108666494 B CN108666494 B CN 108666494B CN 201810713345 A CN201810713345 A CN 201810713345A CN 108666494 B CN108666494 B CN 108666494B
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- module
- busbar
- blocks
- pole
- pole cover
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- 238000012856 packing Methods 0.000 claims abstract description 11
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 31
- 229910052782 aluminium Inorganic materials 0.000 claims description 31
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 10
- 229910052802 copper Inorganic materials 0.000 claims description 10
- 239000010949 copper Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 10
- 238000001746 injection moulding Methods 0.000 claims description 8
- 238000003466 welding Methods 0.000 claims description 7
- 238000005452 bending Methods 0.000 claims description 4
- 238000001125 extrusion Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 230000002146 bilateral effect Effects 0.000 claims description 2
- 238000004806 packaging method and process Methods 0.000 claims description 2
- 238000013461 design Methods 0.000 abstract description 8
- 238000010586 diagram Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
Classifications
-
- 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
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Mounting, Suspending (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention discloses a large module grouping structure of a flexible soft package battery, which comprises a plurality of blocks (2) and a plurality of middle frames (5) of modules which are stacked in a crossing manner along the thickness direction, and are packaged into groups by packing belts (1); the Block (2) is a battery module, and positive and negative electrodes of the blocks (2) are respectively and electrically connected through bus bars; the frame (5) in the module is positioned between the blocks (2), so that a certain range of gaps are adjusted and reserved between the blocks (2), and flexible grouping is realized. The invention can solve the conflict between the universality and the flexible design of the module, reduce the module grouping cost and improve the module grouping efficiency.
Description
Technical Field
The invention belongs to the field of battery modules, and particularly relates to a structure of a large flexible soft package battery module for a pure electric passenger car.
Background
Along with the development of new energy electric automobile technology, people have higher and higher requirements on the endurance mileage, and along with the development of the endurance mileage of the electric automobile to 500km or even 600km, the traditional chassis structure cannot adapt to the assembly requirement of a battery box body. The new generation electric car platform is more and more favored by host factories, and along with the increase of battery power and the reduction of cost, the large module grouping process is beginning to be paid attention to. Meanwhile, the configuration of different electric quantity and driving mileage also requires the structural design of the battery module to have certain flexibility, and different kinds of serial-parallel connection can be realized more conveniently.
In the prior art, the passenger car module is mostly based on VDA standard size or special-shaped module is designed based on battery pack space size. Although the standard module based on the VDA size (355 x 155 x 108) can well meet the installation requirement in a traditional vehicle battery pack, the standard module structure formed by 12 electric cores in a serial-parallel connection mode is fixed, the flexible cascade design requirement cannot be realized, and the smaller module structure brings about the rise of the grouping cost, so that the standard module structure cannot meet the design requirement of the platform of a new generation electric vehicle. The special-shaped large module designed based on the space size of the battery box body is poor in universality and cannot meet the low-cost generalized design requirement.
Disclosure of Invention
The invention aims to solve the technical problem of providing a large flexible soft package battery module structure, which can solve the conflict between module universality and flexible design, reduce module grouping cost and improve module grouping efficiency.
In order to achieve the above purpose, the technical scheme of the invention is realized as follows:
a large module grouping structure of a flexible soft package battery comprises a plurality of blocks (2) and a plurality of middle frames (5) of modules which are stacked in a crossing manner along the thickness direction, and are packaged into groups through packaging belts (1); the Block (2) is a battery module, and positive and negative electrodes of the blocks (2) are respectively and electrically connected through bus bars; the frame (5) in the module is positioned between the blocks (2), so that a certain range of gaps are adjusted and reserved between the blocks (2), and flexible grouping is realized.
Further, the Block (2) is composed of two electric cores (21) and a heat conduction aluminum plate assembly (22), the heat conduction aluminum plate assembly (22) is located between the two electric cores (21), and the heat conduction aluminum plate assembly (22) is provided with a buckle connected with the middle frame (5) of the module and a clamping groove connected with the busbar in a clamping mode.
Further, the heat-conducting aluminum plate assembly (22) is formed by thermally welding plastic supporting pieces (221) at two ends and a heat-conducting aluminum plate (222) through a thermal welding area (2213);
the section of the heat conducting aluminum plate (222) is I-shaped, the large surface (2222) is coated with heat conducting glue to be in direct contact with the battery cell (21), heat generated by the battery cell (21) is transferred to the heat conducting aluminum plate (222), and heat convection is realized between the overflow surface (2221) and the outside;
the plastic supporting piece (221) is an injection molding piece and is provided with a clamping groove (2212) for being connected with the middle frame (5) of the module; the end face of the plastic support piece (221) is provided with a busbar clamping groove (2211), the busbar clamping groove (2211) is of a U-shaped limiting structure, and the busbar is directly placed into the busbar clamping groove (2211) and is positioned in advance.
Furthermore, the bus bars and the electrodes of the blocks (2) are connected in series and parallel in a welding mode; the bus bars are zigzag and comprise module bus bars (9) and pole bus bars (8); the end of the pole busbar (8) is press-riveted with a nut of M6 for serial connection between the modules.
Further, a pole cover (6) and a module cover plate (7) are arranged outside the busbar; the pole cover (6) is a bilaterally symmetrical injection molding piece and is correspondingly arranged outside the pole busbar (8), and a plus or minus sign is carved on the large surface (61) of the pole cover for distinguishing the positive and negative poles of the module; the front end of the pole cover is provided with a bending process port (62), so that the front end of the pole cover can be opened by 90 degrees, and the copper bars among the modules are fixed on the pole of the module; the pole cover guard plate (63) and the pole cover body are provided with process notches (64) for manually breaking off according to the requirement during actual installation, so that copper bar connection among the modules is realized; the pole cover (6) is fixed with the middle frame (5) of the module through a pole cover Bian Buka groove (65);
the module cover plate (7) is an extrusion molding piece and is correspondingly arranged outside the module busbar (9) to isolate the busbar; is provided with a module cover plate edge clamping groove (71) for realizing connection with a module frame.
Further, the frame (5) in the module is bilaterally symmetrical and can be cascaded, and packing belt limiting grooves (51), buckles (52) connected with the blocks (2) and M6 nut mounting positions (53) for mounting the bus bars are formed in the left side and the right side of the frame.
Further, a module side frame (4) is arranged outside the Block (2) at the outermost edges of two sides of the module, the module side frame (4) is bilaterally symmetrical, both sides are provided with a packing belt limit groove and a long edge (41), and the edge (41) is used for isolating a serial connection copper bar between a module fixing bolt cap and the module to prevent short circuit.
Furthermore, a module end plate (3) is arranged outside the module side frame (4), and the module end plate (3) is an extruded aluminum profile; the two ends are provided with module fixing holes (31); the middle is provided with a module positioning hole (32); the end face is provided with a module lifting hole (33); the bottom is provided with a liquid cooling plate abdication groove (34); the two sides are provided with packing belt positioning grooves (35).
Compared with the prior art, the invention has the following beneficial effects:
the invention provides a soft package large module structure designed based on the electric vehicle platform arrangement requirement, which well solves the contradiction between module universality and flexible design. The invention can meet the serial-parallel connection requirements of different types by increasing or decreasing the number of the blocks (2) and the frames (5) in the modules, thereby realizing flexible grouping. The module frame, the end plate, the cover plate and the like are molded by using a low-cost injection molding or extrusion process, the universality is good, more different pieces cannot be brought by the change of the serial-parallel quantity of the modules, the module grouping cost is reduced, and the grouping efficiency is improved.
Drawings
FIG. 1 is an exploded view of a large module in an embodiment of the invention;
FIG. 2 is a schematic diagram of a large module assembly according to an embodiment of the present invention;
FIG. 3 is a Block diagram illustrating an embodiment of the present invention;
FIG. 4 is a Block explosion diagram in an embodiment of the invention;
fig. 5 is a schematic structural diagram of a heat conducting aluminum plate assembly in an embodiment of the invention;
FIG. 6 is a schematic diagram of a modular side frame structure in accordance with an embodiment of the present invention;
FIG. 7 is a schematic diagram of a frame structure of a module in an embodiment of the invention;
FIG. 8 is a schematic view of a modular end plate in accordance with an embodiment of the present invention;
FIG. 9 is a schematic diagram of a modular deck structure in accordance with an embodiment of the present invention;
fig. 10 is a schematic view of a pole cover according to an embodiment of the invention.
Detailed Description
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
As shown in fig. 1 and 2, the flexible soft package large module provided by the invention includes: packing belt 1, block2, module end plate 3, module side frame 4, module middle frame 5, pole cover 6, module cover plate 7, pole busbar 8, module busbar 9. Wherein two module end plates 3, two module side frames 4, a plurality of blocks 2 and a plurality of module middle frames 5 are stacked in the thickness direction and then packed into a group by a packing belt. By adjusting the thickness of the frame in the module, gaps of 0.2-0.5 mm are reserved among blocks 2, and the module realizes flexible grouping along the thickness direction of the battery cells.
The module busbar 9 and the electrode post busbar 8 are connected with the electrodes of the Block2 in a welding mode, so that series-parallel connection between the Block2 is realized, the busbar is serrated, the tooth width is 8mm, the gap width is 12-18 mm, the busbar can realize sleeve material production, and the production cost is saved. The module busbar 9 is used for connecting blocks 2 in the modules, and the end part of the pole busbar 8 is pressed with a nut of the M6 for connecting the modules in series. The busbar material is red copper or pure aluminum with better conductivity.
As shown in fig. 3 and 4, block2 is composed of two battery cells 21 and a heat conducting aluminum plate assembly 22; as shown in fig. 5, the heat conductive aluminum plate assembly 22 is composed of plastic supports 221 at both ends and a heat conductive aluminum plate 222 heat-welded through a heat welding region 2213. The large surface 2222 of the heat conducting aluminum plate is coated with heat conducting glue to be in direct contact with the battery cell 21, heat generated by the battery cell 21 is transferred to the lead-in aluminum plate 222, and heat convection is realized between the lead-in aluminum plate overflow surface 2221 and the external environment. The section of the heat conducting aluminum plate 222 is I-shaped, and heat generated by the battery core 21 can be effectively transferred to the outside of the module. The plastic supporting pieces 221 at two ends of the heat conduction aluminum plate component are injection molding pieces, a module frame between the heat conduction aluminum plate component and a Block is connected through a clamping groove 2212, a post bus bar clamping groove 2211 is reserved on the end face, the bus bar clamping groove 2211 is of a U-shaped limiting structure, and the bus bars are directly placed into the bus bar clamping groove 2211 and are positioned in advance. The heat conducting aluminum plate 222 is an aluminum plate with the thickness of 0.2-0.5 mm, which is formed by bending and edge pressing processes, and the surface treatment process is anodic oxidation.
The module frame provided by the invention is mainly used for filling gaps among blocks 2 and ensuring the overall strength of the module. The module frame is designed according to the design principle of bilateral symmetry and cascade connection. Wherein, as shown in fig. 6, the module side frame 4 is disposed between the module end plate 3 and the Block 2. The extended edge 41 serves to isolate the module fixing bolt cap from the series copper bar between the modules, preventing shorting. As shown in fig. 7, the frame 5 in the module is provided with a packing belt limit groove 51, a buckle 52 connected with the heat conducting aluminum plate assembly 22 and an M6 nut mounting position 53 for mounting the pole busbar 8.
As shown in fig. 8, the module end plate 3 is an extruded aluminum profile, the waist-shaped holes 31 with two ends of 8.5×9.5 are module fixing holes, and the periphery of the module is fixed on the lower box body by long bolts of M8. The round hole 32 of the middle phi 7 is a module positioning hole, and when a double-layer module needs to be arranged, a lower-layer module can be fixed through the round hole 32 of the middle phi 7 by using a long bolt of M6; then the upper and lower modules are fixed simultaneously by using long bolts of M8. The end face is provided with a module lifting hole 33, the bottom of the module end plate 3 is provided with a liquid cooling plate abdication groove 34, and packing belt positioning grooves 35 are reserved on two sides of the module end plate 3.
As shown in fig. 9, the module cover 7 is an extrusion molding member, and has a main function of isolating the bus bars, realizing electric safety, and realizing connection with the module frame through the module cover edge clamping groove 71. The module cover plate 7 can be freely cut according to the length requirement of the module, and low-cost production is realized.
As shown in fig. 10, the pole cover 6 is a left-right symmetrical injection molding, and a one-mold two-out injection molding process is adopted, and "+" and "-" are respectively formed on the large face 61 of the pole cover. The front end of the pole cover is provided with a bending process port 62, so that the front end of the pole cover can be opened by 90 degrees, and the copper bars among the modules are fixed on the pole of the module. The pole cover guard plate 63 and the pole cover body are provided with the process notch 64, and the pole cover guard plate and the pole cover body can be manually broken according to the requirement during actual installation, so that the copper bar connection between the modules is facilitated. The pole cover 6 is fixed with the middle frame 5 of the module through the pole cover Bian Buka groove 65, and is fixed with the side frame 4 of the module through the middle buckle 66.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (5)
1. The large module group structure of the flexible soft package battery is characterized by comprising a plurality of blocks (2) and a plurality of middle frames (5) of modules which are stacked in a crossing manner along the thickness direction, and are packaged into groups through packaging belts (1); the Block (2) is a battery module, and positive and negative electrodes of the blocks (2) are respectively and electrically connected through bus bars; the frame (5) in the module is positioned between the blocks (2) to adjust and keep a certain range of gaps between the blocks (2) so as to realize flexible grouping,
the bus bars and the electrodes of the blocks (2) are connected in series and parallel in a welding mode; the bus bars are zigzag and comprise module bus bars (9) and pole bus bars (8); the end of the post busbar (8) is press-riveted with a nut of M6 for serial connection between modules,
a pole cover (6) and a module cover plate (7) are arranged outside the busbar; the pole cover (6) is a bilaterally symmetrical injection molding piece and is correspondingly arranged outside the pole busbar (8), and a plus or minus sign is carved on the large surface (61) of the pole cover for distinguishing the positive and negative poles of the module; the front end of the pole cover is provided with a bending process port (62), so that the front end of the pole cover can be opened by 90 degrees, and the copper bars among the modules are fixed on the pole of the module; the pole cover guard plate (63) and the pole cover body are provided with process notches (64), and the pole cover guard plate and the pole cover body are manually broken according to the requirement during actual installation, so that copper bar connection among the modules is realized; the pole cover (6) is fixed with the middle frame (5) of the module through a pole cover Bian Buka groove (65);
the module cover plate (7) is an extrusion molding piece and is correspondingly arranged outside the module busbar (9) to isolate the busbar; is provided with a module cover plate edge clamping groove (71) for realizing connection with a module frame,
the frame (5) bilateral symmetry in the module, both sides all are equipped with packing area spacing groove (51), link to each other with Block (2) buckle (52) and be used for installing M6 nut mounted position (53) of busbar.
2. The flexible soft package battery large module group structure according to claim 1, wherein the Block (2) is composed of two electric cores (21) and a heat conducting aluminum plate assembly (22), the heat conducting aluminum plate assembly (22) is located between the two electric cores (21), and the heat conducting aluminum plate assembly (22) is provided with a buckle connected with a frame (5) in the module and a clamping groove clamped with a bus bar.
3. The large module group structure of the flexible pouch battery according to claim 2, wherein the heat conductive aluminum plate assembly (22) is composed of plastic supports (221) at both ends and a heat conductive aluminum plate (222) heat-welded through a heat welding region (2213);
the section of the heat conducting aluminum plate (222) is I-shaped, the large surface (2222) is coated with heat conducting glue to be in direct contact with the battery cell (21), heat generated by the battery cell (21) is transferred to the heat conducting aluminum plate (222), and heat convection is realized between the overflow surface (2221) and the outside;
the plastic supporting piece (221) is an injection molding piece and is provided with a clamping groove (2212) for being connected with the middle frame (5) of the module; the end face of the plastic support piece (221) is provided with a busbar clamping groove (2211), the busbar clamping groove (2211) is of a U-shaped limiting structure, and the busbar is directly placed into the busbar clamping groove (2211) and is positioned in advance.
4. The large flexible soft package battery module grouping structure according to claim 1, wherein a module side frame (4) is further arranged outside the blocks (2) at the outermost edges of two sides of the module, the module side frame (4) is bilaterally symmetrical, packing belt limiting grooves and long-out edges (41) are arranged on two sides of the module side frame (4), and the edges (41) are used for isolating serial connection copper bars between module fixing bolt caps and the module to prevent short circuits.
5. The large module grouping structure of the flexible soft package battery according to claim 4, wherein a module end plate (3) is arranged outside the module side frame (4), and the module end plate (3) is an extruded aluminum profile; the two ends are provided with module fixing holes (31); the middle is provided with a module positioning hole (32); the end face is provided with a module lifting hole (33); the bottom is provided with a liquid cooling plate abdication groove (34); the two sides are provided with packing belt positioning grooves (35).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810713345.XA CN108666494B (en) | 2018-06-29 | 2018-06-29 | Large module group structure of flexible soft-package battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810713345.XA CN108666494B (en) | 2018-06-29 | 2018-06-29 | Large module group structure of flexible soft-package battery |
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| CN108666494A CN108666494A (en) | 2018-10-16 |
| CN108666494B true CN108666494B (en) | 2023-12-22 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110190223A (en) * | 2019-05-20 | 2019-08-30 | 广州中国科学院工业技术研究院 | Prospect of EVS Powered with Batteries mould group |
| CN110336068B (en) * | 2019-06-25 | 2021-09-10 | Oppo广东移动通信有限公司 | Head-mounted display device |
| CN110492278B (en) * | 2019-07-25 | 2021-08-10 | 孚能科技(赣州)股份有限公司 | Bus bar, battery module with bus bar, battery system and electric vehicle |
| KR20220000637A (en) | 2020-06-26 | 2022-01-04 | 주식회사 엘지에너지솔루션 | Battery module and battery pack including the same |
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| CN207250600U (en) * | 2017-08-31 | 2018-04-17 | 惠州市蓝微新源技术有限公司 | A kind of soft-package battery module with battery core bracket |
| CN207282558U (en) * | 2017-08-18 | 2018-04-27 | 国联汽车动力电池研究院有限责任公司 | Method for soft package lithium ion power module |
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| CN208538947U (en) * | 2018-06-29 | 2019-02-22 | 天津市捷威动力工业有限公司 | A kind of big mould group block structure of flexibility soft-package battery |
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2018
- 2018-06-29 CN CN201810713345.XA patent/CN108666494B/en active Active
Patent Citations (5)
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| CN207282558U (en) * | 2017-08-18 | 2018-04-27 | 国联汽车动力电池研究院有限责任公司 | Method for soft package lithium ion power module |
| CN207320245U (en) * | 2017-08-24 | 2018-05-04 | 多氟多（焦作）新能源科技有限公司 | A kind of soft package lithium battery module |
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| CN108666494A (en) | 2018-10-16 |
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