CN111477933A - Laminate polymer electric core and battery package and vehicle - Google Patents
Laminate polymer electric core and battery package and vehicle Download PDFInfo
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- CN111477933A CN111477933A CN202010368354.7A CN202010368354A CN111477933A CN 111477933 A CN111477933 A CN 111477933A CN 202010368354 A CN202010368354 A CN 202010368354A CN 111477933 A CN111477933 A CN 111477933A
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- 229920000642 polymer Polymers 0.000 title abstract description 14
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 16
- 239000002985 plastic film Substances 0.000 claims abstract description 15
- 229920006255 plastic film Polymers 0.000 claims abstract description 15
- 230000004308 accommodation Effects 0.000 claims abstract description 12
- 239000003292 glue Substances 0.000 claims abstract description 12
- 239000012528 membrane Substances 0.000 claims abstract description 3
- 238000003466 welding Methods 0.000 claims description 26
- 239000000853 adhesive Substances 0.000 claims description 17
- 230000001070 adhesive effect Effects 0.000 claims description 17
- 108091028732 Concatemer Proteins 0.000 claims description 6
- 238000009459 flexible packaging Methods 0.000 claims 4
- 230000005611 electricity Effects 0.000 claims 1
- 239000003792 electrolyte Substances 0.000 abstract description 16
- 238000005192 partition Methods 0.000 abstract description 5
- 125000006850 spacer group Chemical group 0.000 abstract description 5
- 230000000694 effects Effects 0.000 description 13
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 9
- 238000010586 diagram Methods 0.000 description 4
- 238000005538 encapsulation Methods 0.000 description 4
- 238000004806 packaging method and process Methods 0.000 description 4
- 230000002349 favourable effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- H01M10/0413—Large-sized flat cells or batteries for motive or stationary systems with plate-like electrodes
-
- 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
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/409—Separators, membranes or diaphragms characterised by the material
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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
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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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)
- Battery Mounting, Suspending (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The invention discloses a soft package battery cell, a battery pack and a vehicle. The soft package battery cell comprises an aluminum-plastic film shell and a pole group serial body, wherein the aluminum-plastic film shell is provided with an accommodating space; the utmost point group's establish ties is located accommodation space, the utmost point group's establish ties body includes a plurality of series connection's utmost point core group, every utmost point core group is respectively independently including anodal ear, negative pole ear and at least one utmost point core, anodal ear/negative pole ear of utmost point core group and the negative pole ear/anodal ear fixed connection of another utmost point core group rather than series connection, and every fixed connection department is equipped with the structure respectively independently and glues, the structure is glued and is separated accommodation space for a plurality of relatively independent chambeies with the bonding of plastic-aluminum membrane casing, every holds the chamber and holds a utmost point core group. This laminate polymer core utilizes the structure to glue and makes utmost point core group accommodation space partition for a plurality of independent chambeies that hold, not only need not to set up other spacer blocks, and electrolyte takes place to decompose and then leads to the problem of battery inefficacy because of the potential difference is too high when can also avoiding appearing a plurality of utmost point core group sharing electrolyte.
Description
Technical Field
The invention belongs to the field of batteries, and particularly relates to a soft package battery cell, a battery pack and a vehicle.
Background
With the continuous popularization of new energy automobiles, the requirement of users on the continuous mileage of the new energy automobiles is continuously improved, and the power battery pack of the new energy automobiles at present exceeds 1 meter in both the length direction and the width direction. In the current market, the length of the battery core is about 0.3 m, and at least 3 or more battery modules are required to be arranged in the power battery pack. The battery pack is provided with a plurality of battery modules, each battery module needs to be added with a fixed structure, the assembly is complex, and meanwhile, two adjacent battery modules need to be connected through a peripheral power connecting piece in a power mode, so that the number of battery module mounting structures is large, the cost is increased, and the whole weight of the battery pack is increased; meanwhile, as the number of the short battery cell assembling accessories is large, the installation structure occupies more internal space, the overall capacity of the power battery module and the battery pack is reduced, and the more the battery modules in the battery pack are arranged, the more the space is wasted.
Based on the above problems, the inventors assume that the length of the soft package battery cell can be increased by connecting the electrode core groups in series, so as to improve the space utilization rate and the battery capacity of the battery module and the battery pack. However, the inventors found that when the potential difference inside the cells is high after the cells are connected in series, if the electrolyte is shared by a plurality of pole core sets, the electrolyte may be decomposed due to the excessively high potential difference, and the battery may fail.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. To this end, an object of the present invention is to propose a pouch cell, a battery pack and a vehicle. This laminate polymer core makes utmost point core group accommodation space partition for a plurality of independent chambeies that hold through utilizing the structure to glue, and not only the partition structure is more simple, need not to set up other spacer elements, and electrolyte takes place to decompose and then leads to the problem that the battery became invalid because of the potential difference is too high when can also avoiding appearing a plurality of utmost point core group sharing electrolyte.
According to a first aspect of the invention, a flexible-package cell is proposed. According to an embodiment of the invention, the soft-package cell comprises:
the aluminum-plastic film shell is provided with an accommodating space;
the utmost point group's concatemer, the utmost point group's concatemer is located in the accommodation space, the utmost point group's concatemer includes a plurality of series connection's utmost point core group, every utmost point core group independently includes anodal ear, negative pole ear and at least one utmost point core respectively, anodal ear/negative pole ear of utmost point core group and another rather than series connection the anodal ear/anodal ear fixed connection of utmost point core group, and every fixed connection department is equipped with the structure respectively independently and glues, the structure glue with the bonding of plastic-aluminum membrane casing will accommodation space separates for a plurality of relatively independent chambeies, every it holds one to hold the chamber utmost point core group.
According to the soft-package battery cell provided by the embodiment of the invention, the plurality of pole core groups are connected in series to form the pole group series body, so that the length of the soft-package battery cell can be obviously increased; in addition, make the accommodation space of utmost point core group separate for a plurality of independent chambeies that hold through utilizing the structure to glue, not only separate the structure more simple, need not to set up other spacer blocks, electrolyte takes place to decompose and then leads to the problem of battery inefficacy because of the potential difference is too high when can also avoiding appearing a plurality of utmost point core group sharing electrolyte. From this laminate polymer core not only the structure is more simple and the reliability is high, can also show when utilizing this laminate polymer core equipment battery package moreover and reduce the required battery module quantity of unit volume, module annex and module mounting structure in groups to can show space utilization and the battery capacity that improves the battery package, reduce the whole weight and the cost of battery package simultaneously.
In addition, the soft package battery cell according to the above embodiment of the present invention may further have the following additional technical features:
in some embodiments of the present invention, the fixing connection is welding or riveting, and the welding area or riveting area is located in the overlapping area of the positive and negative electrode ears between two adjacent electrode core groups.
In some embodiments of the present invention, a distance of the welding area or the riveting area in the width direction of the flexible pouch cell is greater than a distance of the welding area or the riveting area in the length direction of the flexible pouch cell.
In some embodiments of the invention, in the width direction of the soft packaging cell, the ratio of the distance of the welding area or the riveting area to the distance of the overlapping area is (0.8-0.9): 1; in the length direction of the soft package battery cell, the distance ratio of the welding area or the riveting area to the overlapping area is (0.5-0.8): 1.
in some embodiments of the invention, the area ratio of the welding or riveting zone to the area of the overlapping area is not less than 30%.
In some embodiments of the present invention, the area of the welding area or the riveting area is 100 to 300mm2。
In some embodiments of the present invention, the structural adhesive is disposed around the fixedly connected positive electrode tab and negative electrode tab, and the structural adhesive extends beyond edges of the positive electrode tab and negative electrode tab in a width direction of the flexible pouch cell.
In some embodiments of the present invention, at least a portion of the structural adhesive coincides with the welding or riveting zone in the length direction of the flexible pouch cell.
In some embodiments of the present invention, the structural adhesive completely covers the overlapping region of the positive and negative electrode tabs.
According to a second aspect of the present invention, a battery pack is provided. According to the embodiment of the invention, the battery pack comprises the soft packaging battery core. The battery pack is higher in reliability, the number of battery modules required in unit volume, battery module grouping accessories and battery module mounting structures are relatively less, the space utilization rate of the battery pack is high, the battery pack has the advantages of small overall weight, low cost and large battery capacity, and the battery pack can be used as a power battery to be applied to a new energy automobile to greatly improve the continuous mileage.
According to a third aspect of the present invention, a vehicle is provided. According to an embodiment of the invention, the vehicle comprises the battery pack or the soft package battery core. Compared with the existing vehicle, the vehicle has more stable driving performance and longer driving range.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural diagram of a soft-package cell according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of the structure of a series of pole groups according to one embodiment of the invention.
Fig. 3 is a schematic structural diagram of an aluminum plastic film shell according to an embodiment of the invention.
Fig. 4 is a schematic structural diagram of the fixedly connected positive and negative electrode tabs according to an embodiment of the invention.
Fig. 5 is a schematic structural view of a positive and negative electrode tab before fixed connection according to an embodiment of the present invention.
Fig. 6 is a schematic structural view of a positive and negative electrode tab before fixed connection according to still another embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations. In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
According to a first aspect of the invention, a flexible-package cell is proposed. According to an embodiment of the present invention, as shown in fig. 1 to 3, the soft-package battery cell includes: a pole group serial body 100 and an aluminum-plastic film shell 200. Wherein, the aluminum-plastic film casing 200 has an accommodating space 210; the pole group serial body 100 is positioned in the accommodating space 210, the pole group serial body 100 comprises a plurality of pole core groups 110 connected in series, each pole core group 110 respectively and independently comprises a positive pole lug 111, a negative pole lug 112 and at least one pole core (not shown), the positive pole lug 111/the negative pole lug 112 of one pole core group 110 is fixedly connected with the negative pole lug 112/the positive pole lug 111 of the other pole core group 110 connected in series, each fixed connection part 114 is respectively and independently provided with a structural adhesive 115, the structural adhesive 115 is adhered with the aluminum plastic film shell 200 and divides the accommodating space 210 into a plurality of relatively independent accommodating cavities 211, and each accommodating cavity 211 accommodates one pole core group 110. The positive tab 111/negative tab 112 and the negative tab 112/positive tab 111 of the two pole core groups located at the two ends of the pole group serial body 100 penetrate out of the aluminum plastic film shell 200 to serve as the positive tab and the negative tab of the soft package battery cell. This laminate polymer core makes utmost point core group accommodation space partition for a plurality of independent chambeies that hold through utilizing the structure to glue, and not only the partition structure is more simple, need not to set up other spacer elements, and electrolyte takes place to decompose and then leads to the problem that the battery became invalid because of the potential difference is too high when can also avoiding appearing a plurality of utmost point core group sharing electrolyte.
The soft-package battery cell according to the above embodiment of the invention is described in detail with reference to fig. 1 to 6.
According to an embodiment of the present invention, the fixed connection structure between the serial pole-core groups may be welding or riveting, wherein the welding may be laser welding or ultrasonic welding, etc., as shown in fig. 4, the welding area or riveting area 116 may be located in the overlapping area 117 of the positive and negative electrode tabs between two adjacent pole-core groups 110, thereby further improving the stability between the serial pole-core groups.
According to another embodiment of the present invention, as shown in fig. 4, a distance between the overlapping regions 117 of the positive and negative electrode tabs in the width direction of the flexible pouch cell may be greater than a distance between the overlapping regions 117 of the positive and negative electrode tabs in the length direction of the flexible pouch cell. Further, the welded area or the distance of riveting district 116 on laminate polymer core width direction can be greater than the welded area or the distance of riveting district 116 on laminate polymer core length direction, can further improve the fixed effect of the series connection between the utmost point core group of establishing ties and laminate polymer core's bulk strength from this to more be favorable to the equipment of battery package and the promotion of battery package performance.
According to another embodiment of the present invention, in the width direction of the flexible package core, the ratio of the distance of the welding area or the riveting area 116 to the distance of the overlapping area 117 may be (0.8-0.9): 1; in the length direction of the soft-packaged cell, the distance ratio of the welding area or riveting area 116 to the overlapping area 117 may be (0.5-0.8): the inventor finds that the series effect and the connection strength between the pole core groups can be further ensured by controlling the welding area or the riveting area to be the size ratio, so that the overall strength and the reliability of the soft package battery cell can be further improved, and the assembly of the battery pack and the performance of the battery pack can be further improved.
According to another embodiment of the present invention, the area ratio of the welding area or the riveting area 116 to the overlapping area 117 may be not less than 30%, preferably not less than 40%, so as to further ensure the serial connection and fixation effect between the connected pole core groups, and improve the overall strength and reliability of the whole soft-packaged battery cell, thereby being more beneficial to the assembly of the battery pack and the improvement of the performance of the battery pack; more preferably, the area of the welding area or the riveting area may be 100 to 300mm2Thereby, the serial connection and the fixing effect between the connected pole core groups can be further ensured.
According to another embodiment of the present invention, as shown in fig. 2, the structural adhesive 115 may be disposed around the positive and negative electrode tabs 111 and 112 that are fixedly connected, and the structural adhesive 115 may extend beyond the edges of the positive and negative electrode tabs in the width direction of the pouch cell. Therefore, the separation effect of the electrode core group accommodating space can be further improved, and the electrolyte in each accommodating cavity is independent from each other, so that the problem that the electrolyte is decomposed and then the battery fails due to the fact that the potential difference is too high when the electrolyte is shared by a plurality of electrode core groups can be further avoided.
According to another embodiment of the present invention, as shown in fig. 2, the positive tab 111 and the negative tab 112 penetrating through the aluminum plastic film casing 200 may also be respectively and independently surrounded by a structural adhesive 115, and the structural adhesive 115 may be located in the edge sealing area between the tab and the aluminum plastic film casing 200 and adhered to the aluminum plastic film casing 200, and the structural adhesive is located in the edge sealing area of the aluminum plastic film casing after encapsulation, so that the encapsulation effect of the soft package battery cell may be further improved.
According to another embodiment of the present invention, at least a portion of the structural adhesive 115 may coincide with the welding or riveting region 116 in the length direction of the soft-packed battery cell, thereby further improving the series connection and fixation effect between the pole core groups. More preferably, the structural adhesive 115 may surround the welding or riveting area 116 of the positive and negative electrode tabs in the length direction of the soft-packed cell, so as to further ensure the series connection and fixing effect between the electrode core groups.
According to another embodiment of the present invention, the structural adhesive 115 completely covers the fixedly connected overlapping regions 117 of the positive and negative electrode tabs. The inventor finds that, for adopting multichannel structure to glue, adopt this arrangement mode not only can further ensure the series connection and the fixed effect between the adjacent utmost point core group, can also further improve the separation effect to utmost point core group accommodation space among the encapsulation process, ensure that the electrolyte of every holding intracavity is independent each other.
According to another embodiment of the present invention, the plastic-aluminum housing 200 can be a one-piece plastic-aluminum film (as shown in fig. 3) having two stamped recesses 210; or the plastic-aluminum housing may comprise two separate pieces of plastic-aluminum, each piece having a stamped indentation 210 formed therein. The encapsulation of soft-packaged battery cell can be realized in both the two modes.
According to another embodiment of the present invention, as shown in fig. 5, at least one positioning line 118 perpendicular to the length direction of the soft package core may be independently disposed on each of the positive tab 111 and the negative tab 112, and the position of the positive tab and the negative tab may be determined based on the length of the positioning line 118 and the distance between the positioning line 118 and the two electrode core groups 110 connected in series, so that the series connection and the fixation between the electrode core groups may be facilitated, and the stability of the fixed connection may be improved. Preferably, the positioning wire 118 on the positive tab 111 and the negative tab 112 may be respectively provided on the surfaces of the positive tab 111 and the negative tab 112 that do not overlap each other. Further, as shown in fig. 6, at least one second positioning line 119 parallel to the length direction of the soft-package battery cell may be further independently disposed on the positive tab 111 and the negative tab 112, so as to be more favorable for defining a fixed connection area between the positive tab and the negative tab, and further be favorable for improving the serial connection and fixing effect of the serial connection battery cell.
According to another specific embodiment of the invention, the length of the soft-package battery cell can be not less than 600mm, and the thickness of the soft-package battery cell can be 10-15 mm. Based on current electric core structure and when equipment battery package because of battery module is many, electric core and battery module equipment annex and mounting structure are more, and then lead to the battery package with high costs, heavy and space utilization is low, the problem that capacity density is little, the inventor imagines can improve the length of electric core through the mode that extremely core group establishes ties, thereby improve the space utilization and the capacity of battery module and battery package, preferably establish ties through extremely core group and obtain length not less than 600 mm's laminate polymer core and form laminate polymer core and assemble battery module and battery package. Furthermore, the inventor finds that the thinner the thickness of the soft-package battery cell is, the softer the soft-package battery cell is, the greater the assembly difficulty of the battery module is, the thickness of the soft-package battery cell can be increased to a certain extent, but if the thickness of the soft-package battery cell is too large, the pit punching depth required when the aluminum plastic film is subjected to pit punching to prepare the packaging shell is also larger, and the cracking of the aluminum plastic film shell is easily caused. Preferably, the length of the soft package battery cell can be 600-1300 mm, the thickness of each soft package battery cell can be 11-14 mm, and more preferably 12mm, 13mm or 14mm and the like, so that the yield of the soft package battery cell can be further improved, and the assembly difficulty of the battery module can be reduced.
In summary, according to the soft-package battery cell of the embodiment of the invention, the length of the soft-package battery cell can be significantly increased by connecting a plurality of pole core groups in series to form a pole group series body; in addition, make the accommodation space of utmost point core group separate for a plurality of independent chambeies that hold through utilizing the structure to glue, not only separate the structure more simple, need not to set up other spacer blocks, electrolyte takes place to decompose and then leads to the problem of battery inefficacy because of the potential difference is too high when can also avoiding appearing a plurality of utmost point core group sharing electrolyte. From this laminate polymer core not only the structure is more simple and the reliability is high, can also show when utilizing this laminate polymer core equipment battery package moreover and reduce the required battery module quantity of unit volume, module annex and module mounting structure in groups to can show space utilization and the battery capacity that improves the battery package, reduce the whole weight and the cost of battery package simultaneously.
According to a second aspect of the present invention, a battery pack is provided. According to the embodiment of the invention, the battery pack comprises the soft packaging battery core. The battery pack is higher in reliability, the number of battery modules required in unit volume, battery module grouping accessories and battery module mounting structures are relatively less, the space utilization rate of the battery pack is high, the battery pack has the advantages of small overall weight, low cost and large battery capacity, and the battery pack can be used as a power battery to be applied to a new energy automobile to greatly improve the continuous mileage. It should be noted that the features and effects described for the above soft package battery cell are also applicable to the battery pack, and are not described in detail here.
According to a third aspect of the present invention, a vehicle is provided. According to an embodiment of the invention, the vehicle comprises the battery pack or the soft package battery core. Compared with the existing vehicle, the vehicle has more stable driving performance and longer driving range. It should be noted that the type of the vehicle is not particularly limited, and those skilled in the art can select the vehicle according to actual needs, for example, the vehicle may be a new energy vehicle or the like. In addition, it should be further noted that the features and effects described for the battery pack or the soft package battery cell are also applicable to the vehicle, and are not described in detail herein.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. The utility model provides a soft packet of electricity core which characterized in that includes:
the aluminum-plastic film shell is provided with an accommodating space;
the utmost point group's concatemer, the utmost point group's concatemer is located in the accommodation space, the utmost point group's concatemer includes a plurality of series connection's utmost point core group, every utmost point core group independently includes anodal ear, negative pole ear and at least one utmost point core respectively, anodal ear/negative pole ear of utmost point core group and another rather than series connection the anodal ear/anodal ear fixed connection of utmost point core group, and every fixed connection department is equipped with the structure respectively independently and glues, the structure glue with the bonding of plastic-aluminum membrane casing will accommodation space separates for a plurality of relatively independent chambeies, every it holds one to hold the chamber utmost point core group.
2. The flexible packaging core according to claim 1, wherein the fixed connection is welding or riveting, and the welding zone or riveting zone is located in the overlapping region of the positive and negative electrode lugs between two adjacent electrode core groups.
3. The flexible-packaging cell according to claim 2, characterized in that the distance of the weld or rivet zone in the width direction of the flexible-packaging cell is greater than the distance of the weld or rivet zone in the length direction of the flexible-packaging cell.
4. The flexible-package cell according to claim 2 or 3, characterized in that the ratio of the distance of the welding or riveting zone to the distance of the overlapping area in the width direction of the flexible-package cell is (0.8-0.9): 1; in the length direction of the soft package battery cell, the distance ratio of the welding area or the riveting area to the overlapping area is (0.5-0.8): 1.
5. the flexible pouch cell of claim 4, wherein the area ratio of the weld or rivet region to the overlap area is not less than 30%,
optionally, the area of the welding area or the riveting area is 100-300 mm2。
6. The flexible-package battery cell according to claim 1 or 5, wherein the structural adhesive is arranged around the fixedly-connected positive tab and negative tab, and the structural adhesive extends out of the edges of the positive tab and negative tab in the width direction of the flexible-package battery cell.
7. The flexible-package cell according to claim 6, characterized in that at least a part of the structural glue coincides with the weld or rivet zone in the length direction of the flexible-package cell.
8. The soft-package battery cell according to claim 1 or 6, wherein the structural adhesive completely covers the overlapping area of the fixedly connected positive and negative electrode lugs.
9. A battery, characterized by comprising the soft package core of any one of claims 1-8.
10. A vehicle comprising the battery of claim 9 or the pouch of any one of claims 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010368354.7A CN111477933A (en) | 2020-04-30 | 2020-04-30 | Laminate polymer electric core and battery package and vehicle |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112582756A (en) * | 2020-12-11 | 2021-03-30 | 孚能科技(赣州)股份有限公司 | Battery module group structure and battery module |
| CN112736369A (en) * | 2021-01-11 | 2021-04-30 | 远景动力技术(江苏)有限公司 | Lithium ion battery and design process thereof |
| CN114079127A (en) * | 2020-08-11 | 2022-02-22 | 北京小米移动软件有限公司 | Battery packs and terminals |
| CN114464961A (en) * | 2022-01-19 | 2022-05-10 | 蜻蜓实验室(深圳)有限公司 | Lithium ion battery and lithium ion battery pack |
| CN114976190A (en) * | 2022-06-16 | 2022-08-30 | 重庆长安新能源汽车科技有限公司 | Battery, battery module, battery pack and automobile |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110518174A (en) * | 2019-10-23 | 2019-11-29 | 比亚迪股份有限公司 | A kind of battery, battery modules, battery pack and electric vehicle |
| CN210245650U (en) * | 2019-04-22 | 2020-04-03 | 惠州市恒晔科技有限公司 | Novel ultra-thin battery |
| CN212011154U (en) * | 2020-04-30 | 2020-11-24 | 昆山宝创新能源科技有限公司 | Laminate polymer electric core and battery package and vehicle |
-
2020
- 2020-04-30 CN CN202010368354.7A patent/CN111477933A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN210245650U (en) * | 2019-04-22 | 2020-04-03 | 惠州市恒晔科技有限公司 | Novel ultra-thin battery |
| CN110518174A (en) * | 2019-10-23 | 2019-11-29 | 比亚迪股份有限公司 | A kind of battery, battery modules, battery pack and electric vehicle |
| CN212011154U (en) * | 2020-04-30 | 2020-11-24 | 昆山宝创新能源科技有限公司 | Laminate polymer electric core and battery package and vehicle |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114079127A (en) * | 2020-08-11 | 2022-02-22 | 北京小米移动软件有限公司 | Battery packs and terminals |
| CN112582756A (en) * | 2020-12-11 | 2021-03-30 | 孚能科技(赣州)股份有限公司 | Battery module group structure and battery module |
| CN112736369A (en) * | 2021-01-11 | 2021-04-30 | 远景动力技术(江苏)有限公司 | Lithium ion battery and design process thereof |
| CN112736369B (en) * | 2021-01-11 | 2022-06-21 | 远景动力技术(江苏)有限公司 | Lithium ion battery and design process thereof |
| CN114464961A (en) * | 2022-01-19 | 2022-05-10 | 蜻蜓实验室(深圳)有限公司 | Lithium ion battery and lithium ion battery pack |
| CN114464961B (en) * | 2022-01-19 | 2024-03-29 | 蜻蜓实验室(深圳)有限公司 | Lithium ion battery and lithium ion battery pack |
| CN114976190A (en) * | 2022-06-16 | 2022-08-30 | 重庆长安新能源汽车科技有限公司 | Battery, battery module, battery pack and automobile |
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