CN111477931A - Laminate polymer battery and vehicle - Google Patents
Laminate polymer battery and vehicle Download PDFInfo
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- CN111477931A CN111477931A CN202010366651.8A CN202010366651A CN111477931A CN 111477931 A CN111477931 A CN 111477931A CN 202010366651 A CN202010366651 A CN 202010366651A CN 111477931 A CN111477931 A CN 111477931A
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- battery
- direct connection
- liquid cooling
- cooling plate
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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
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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
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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
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
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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
- H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
- H01M10/647—Prismatic or flat cells, e.g. pouch 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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
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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
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6551—Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings
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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
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6554—Rods or plates
- H01M10/6555—Rods or plates arranged between the 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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
- H01M10/6557—Solid parts with flow channel passages or pipes for heat exchange arranged between the 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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
- H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
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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
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- 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
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- 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
Abstract
The invention discloses a soft package battery and a vehicle. The soft package battery comprises a battery module and a cooling device, wherein the battery module comprises at least one layer of battery direct connection group layer, each layer of battery direct connection group layer comprises at least two battery direct connection groups which are arranged side by side, each battery direct connection group comprises one or more battery cell stacking bodies which are connected in series, and every two adjacent battery direct connection groups which are arranged side by side are connected through first tab supports at two ends of each battery direct connection group; the cooling device comprises a heat conducting adhesive and a liquid cooling plate, the liquid cooling plate is a wave-shaped bent plate or a Z-shaped bent plate, the liquid cooling plate is uniformly arranged between any two adjacent batteries which are arranged side by side in each layer of battery direct connection group layer, and the heat conducting adhesive is filled between the battery direct connection group and the liquid cooling plate. This laminate polymer battery improves heat conduction efficiency simultaneously from the arrangement mode and the liquid cooling plate structure of liquid cooling plate, and not only the cooling effect is good but also battery inner structure is more simple.
Description
Technical Field
The invention belongs to the field of power batteries, and particularly relates to a soft package battery and a vehicle.
Background
At present, the liquid cooling battery module is widely applied, and a plurality of environmental protection industries including new energy automobiles adopt the liquid cooling battery module to provide power. Therefore, the performance of the liquid-cooled battery module directly determines the performance of the equipment using the liquid-cooled battery module as a power source. The design degree of difficulty of laminate polymer battery liquid cooling system is big, often adopts heat-conducting plate contact laminate polymer battery, and a heat-conducting plate of electric core or two electric cores of a heat-conducting plate contact shares, and the heat-conducting plate is derived the heat of electric core from electric core thickness direction, and this kind of mode not only heat conduction efficiency is low, still can increase battery weight, and electric core quantity is more, and heat-conducting plate quantity is more, and the equipment is also complicated more. In addition, the height of a battery pack is expected to be reduced continuously in the industry at present, but the traditional soft-package battery is often assembled in a standing mode, so that the height of the module is often higher, and the height cannot be reduced due to various requirements of the manufacturing process, the cost and the like of the soft-package battery, and the requirement of reducing the height of a battery system is difficult to adapt.
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, it is an object of the invention to propose a pouch battery and a vehicle. This laminate polymer battery improves heat conduction efficiency simultaneously from the arrangement mode and the liquid cooling plate structure of liquid cooling plate, and not only the cooling effect is good, and battery inner structure is more simple and the equipment degree of difficulty is little moreover, the demand that highly reduces of adaptation battery system that can be better.
According to a first aspect of the invention, a pouch battery is provided. According to an embodiment of the invention, the pouch battery comprises:
the battery module comprises at least one layer of battery direct connection group layer, each layer of battery direct connection group layer comprises at least two battery direct connection groups arranged side by side, each battery direct connection group comprises one battery cell stack body or a plurality of battery cell stack bodies connected in series, two ends of each battery direct connection group are respectively and independently provided with a first tab support, and two adjacent battery direct connection groups arranged side by side are connected through the first tab supports;
the cooling device comprises a heat conducting adhesive and a liquid cooling plate, the liquid cooling plate is a wave-shaped bent plate or a Z-shaped bent plate, every layer of the liquid cooling plate is formed by connecting any two adjacent batteries in the battery direct connection group layer side by side, the batteries are directly connected between the groups and fixedly arranged with the liquid cooling plate, and the heat conducting adhesive is filled in the batteries directly connected between the groups and the liquid cooling plate.
The soft package battery of the embodiment of the invention at least has the following advantages: 1) the battery cells are in a flat-lying mode, each battery cell stacking body can respectively and independently comprise a plurality of parallel battery cells stacked along the height direction of the soft-package battery, and therefore the height requirement of the battery pack can be met by adjusting the stacking thickness of the plurality of layers of flat-lying battery cells in the battery cell stacking body and the number of layers of the direct battery pack; 2) the cooling adopts a mode that the heat-conducting glue is directly filled in the gap between the liquid cooling plate and the battery cell stacking body to directly contact the battery cell, so that the cooling efficiency is higher; 3) when two adjacent battery direct-connecting groups arranged side by side are connected, the liquid cooling plate can be pressed between the two battery direct-connecting groups, the heat-conducting glue, the liquid cooling plate and the battery core are uniformly and tightly attached, a gap between the battery core and the liquid cooling plate is eliminated, and parts for supporting and fixing the liquid cooling plate are reduced or avoided, so that the cost of the battery can be reduced and the internal structure of the battery can be simplified; 4) only one liquid cooling plate is arranged in two adjacent battery direct-connection groups arranged in parallel, so that the heat of the multilayer battery core can be quickly led out, the internal structure of the battery is simpler, and the overall weight is lighter; 5) the liquid cooling plate adopts a wavy or zigzag bent plate, so that the contact area of the liquid cooling plate and the heat conducting glue and the flowing interval of cooling liquid in the liquid cooling plate can be further increased, the heat conducting efficiency can be further increased, and the cooling effect can be improved. Compared with the prior art, the soft package battery simultaneously improves the heat conduction efficiency from the arrangement mode of the liquid cooling plate and the liquid cooling plate structure, not only has good cooling effect, but also has simpler internal structure of the battery and small assembly difficulty, and can better meet the requirement of highly reducing the battery system.
In addition, the pouch battery according to the above embodiment of the present invention may further have the following additional technical features:
in some embodiments of the present invention, a first connection hole is formed in the first tab holder, a through hole corresponding to the first connection hole is formed in the liquid cooling plate, and the liquid cooling plate is connected to the battery direct connection assembly through the through hole and the first connection hole.
In some embodiments of the present invention, a second tab support is disposed between two adjacent battery cell stacks connected in series in the battery direct connection group, and two adjacent battery direct connection group layers are connected by the first tab support and/or the second tab support.
In some embodiments of the present invention, a second connecting hole is formed on the second tab holder, and at least one first protrusion connected to the second connecting hole in a matching manner is formed on the liquid cooling plate.
In some embodiments of the present invention, the arrangement manner and the number of the battery direct connection groups in each layer of the battery direct connection group layer are the same, and two adjacent rows of the battery direct connection groups in the multiple layers of the battery direct connection group layers are arranged side by side and share one liquid cooling plate.
In some embodiments of the invention, the liquid cooled plate has a plurality of cooling liquid passages disposed therein, and a plurality of the cooling liquid passages share one of the cooling liquid inlets and one of the cooling liquid outlets.
In some embodiments of the present invention, heat insulating foam is independently disposed between two adjacent cell stacks in a height direction of the battery module.
In some embodiments of the invention, the pouch battery further comprises: two guard plates, establish respectively two guard plates the lower surface of battery module with the upper surface of battery module, with every of guard plate contact electric core pile body with be equipped with thermal-insulated bubble cotton respectively independently between the guard plate.
In some embodiments of the present invention, a third connection hole is formed in the first tab support, a fourth connection hole is formed in the second tab support, and a fifth connection hole or a second protrusion corresponding to the third connection hole and/or the fourth connection hole is independently formed in each of the protection plates.
According to a second aspect of the invention, a vehicle is proposed. According to an embodiment of the invention, the vehicle comprises the pouch battery described above. Power battery's radiating effect is good and light in weight in this vehicle, and the duration is more stable.
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 pouch battery having one cell direct stack layer according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of a structure of a single cell direct stack layer according to one embodiment of the invention.
Fig. 3 is a schematic structural diagram of a battery direct connection set, a conductive adhesive and a liquid cooling plate according to an embodiment of the invention.
Fig. 4 is a schematic diagram of a liquid-cooled panel according to one embodiment of the invention.
FIG. 5 is a schematic structural diagram of the arrangement position of the heat insulation foam according to one embodiment of the invention.
Fig. 6 is a side view of a pouch cell with one cell direct stack according to one embodiment of the present invention.
Fig. 7 is a cross-sectional view along a-a according to fig. 6.
Fig. 8 is a schematic structural view of a guard plate according to one 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 pouch battery is provided. According to an embodiment of the invention, referring to fig. 1-4, the soft package battery comprises: a battery module and a cooling device 200. The battery module comprises at least one layer of battery direct connection group layer 100, each layer of battery direct connection group layer 100 comprises at least two battery direct connection groups 110 arranged side by side, each battery direct connection group 110 comprises one battery cell stack body 111 or comprises a plurality of battery cell stack bodies 111 connected in series, two ends of each battery direct connection group 110 are respectively and independently provided with a first tab support 112, and two adjacent battery direct connection groups 110 arranged side by side are connected through the first tab supports 112; the cooling device 200 comprises heat conducting glue 210 and a liquid cooling plate 220, the liquid cooling plate 220 is a wave-shaped bent plate or a Z-shaped bent plate, the liquid cooling plate 220 is arranged between any two adjacent batteries in each battery direct connection group layer 100 and between the batteries directly connected group 110 which are arranged side by side, and the heat conducting glue 210 is filled between the batteries directly connected group 110 and the liquid cooling plate 220. This laminate polymer battery improves heat conduction efficiency simultaneously from the arrangement mode and the liquid cooling plate structure of liquid cooling plate, and not only the cooling effect is good, and battery inner structure is more simple and the equipment degree of difficulty is little moreover, the demand that highly reduces of adaptation battery system that can be better.
The pouch battery according to the above embodiment of the present invention will be described in detail with reference to fig. 1 to 8.
According to an embodiment of the present invention, as shown in fig. 4 and 5, the first tab holder 112 may be provided with a first connection hole 113, and the liquid cooling plate 220 may be provided with a through hole 223 corresponding to the first connection hole 113 at a position adjacent to the end of the battery direct connection group 110, and the liquid cooling plate 220 is connected to the battery direct connection group 110 through the through hole 223 and the first connection hole 113. Therefore, the liquid cooling plate can be further positioned by utilizing the first tab support, so that the liquid cooling plate is fixed between two adjacent battery direct connection groups arranged side by side, and the stability between the liquid cooling plate and the battery direct connection groups is further improved on the basis of not increasing additional fixing accessories; the gap distance between the liquid cooling plate and the battery direct connection group and the tight fit degree between the liquid cooling plate, the conductive adhesive and the battery core can also be adjusted by adjusting the tightness degree of the first tab support in connection, so that the heat conduction efficiency is further improved.
According to another embodiment of the invention, a second tab support 114 is disposed between two adjacent cell stacks 111 connected in series in the battery direct connection group 110, and two adjacent battery direct connection group layers 100 are connected by the first tab support 112 and/or the second tab support 114. In addition, the first tab holder 112 and the second tab holder 114 may be respectively and independently an insulating plastic holder, which may not only further contribute to the improvement of the safety and reliability of the battery, but also reduce the overall weight of the battery.
According to another embodiment of the present invention, as shown in fig. 4 and 5, the second tab bracket 114 may be provided with a second connecting hole 115, and the liquid cooling plate 220 is provided with at least one first protrusion 224 that is connected to the second connecting hole 115 in a matching manner, so that the second tab bracket can be further utilized to perform auxiliary positioning on the liquid cooling plate at the middle position of the battery direct connection set, thereby further improving the stability between the liquid cooling plate and the battery direct connection set on the basis of not adding additional fixing accessories. Preferably, the first protrusion 224 is provided in plural, and is preferably provided at one side of the liquid cooling plate 220, thereby facilitating the installation of the liquid cooling plate.
According to another embodiment of the present invention, the arrangement and the number of the battery straight connection groups 110 in each battery straight connection group layer 100 are the same, and two adjacent rows of the battery straight connection groups 110 arranged side by side in the multilayer battery straight connection group layer 110 may share one liquid cooling plate. Therefore, the number of the liquid cooling plates in the battery can be greatly reduced, and parts for supporting and fixing the liquid cooling plates are reduced or avoided, so that the heat dissipation efficiency of the battery can be improved, the internal structure of the battery can be simplified, and the cost of the battery can be reduced.
According to another embodiment of the present invention, a plurality of cooling liquid channels (not shown) may be built in the liquid cooling plate 220, and the plurality of cooling liquid channels share one cooling liquid inlet 221 and one cooling liquid outlet 222. Therefore, the circulation flow of the cooling liquid in the liquid cooling plate can be accelerated, the heat of the battery cell stacking body is taken away through the cooling liquid quickly, the heat of the battery cell stacking body is reduced, the cooling effect is further improved, and the structure of the cooling device can be further simplified.
According to another embodiment of the present invention, as shown in fig. 5 to 7, in the height direction of the battery module, heat insulation foam 300 may be independently disposed between two adjacent cell stacks 111, and the heat insulation foam 300 is stopped against the first tab support 112 and/or the second tab support 114, so that heat conduction paths between the cell direct connection stack layers of each layer may be separated, and an excessive temperature difference between the cells during cooling may be avoided. More preferably, the pouch battery may further include two protection plates 400, the two protection plates 400 being respectively provided at the lower surface and the upper surface of the battery module, namely the lower surface of the lowermost direct battery layer 100 and the upper surface of the uppermost direct battery layer, the thermal insulation foam 300 is independently arranged between each cell stack body 111 in contact with the protection plate and the protection plate 400, the thermal insulation foam 300 is stopped against the first lug support 112 and/or the second lug support 114, so that the thermal insulation foam can be arranged on the upper surface and the lower surface of each cell stack body, thereby can separate the electric core heat conduction route between each electric core stack body, the difference in temperature is too big between the electric core when further avoiding heat conduction, can also directly link the electric core in the group to the battery and effectively protect, damage electric core when avoiding transportation or equipment, can also avoid simultaneously leading hot glue because of the battery module vibrates the spilling over that leads to in the operation process. It should be noted that the material of the protection plate 400 is not particularly limited, and those skilled in the art can select the material according to actual needs, for example, the protection plate is made of metal and/or non-metal.
According to still another embodiment of the present invention, as shown in fig. 2 and 8, the first tab holder 112 is provided with a third coupling hole 116, the second tab holder 114 is provided with a fourth coupling hole 117, and each of the protection plates 400 is independently provided with a fifth coupling hole or a second protrusion 410 corresponding to the third coupling hole 116 and/or the fourth coupling hole 117, respectively. Therefore, the protection plate can be connected with the third connecting hole and/or the fourth connecting hole through the fifth connecting hole to realize the connection of the protection plate and the battery direct connection group, wherein the connection can be welding or riveting, such as laser welding, ultrasonic welding, or screw and rivet connection; or the second protrusion can be clamped with the third connecting hole and/or the fourth connecting hole to realize the buckling connection of the protection plate and the battery direct connection group.
According to another embodiment of the present invention, at least one of the protection plates 400 may be provided with a groove (not shown) that is connected to the liquid cooling plate 220 in a matching manner, so that the protection plate can be further used to fix the liquid cooling plate and the heat conductive adhesive, thereby preventing the heat conductive adhesive from overflowing due to vibration of the battery module during operation.
It should be noted that, in the present invention, the first tab support 112 and the second tab support 114 can be used for supporting the tabs independently and for fixedly connecting with any adjacent battery direct connection group (layer), liquid cooling plate and protection plate, wherein the connection can be welding or riveting, such as laser welding, ultrasonic welding, or screw and rivet connection.
According to another embodiment of the present invention, the battery straight group 110 with the liquid cooling plate 220 fixed thereto and the battery straight group 110 attached to the liquid cooling plate 220 through the thermal conductive adhesive 210 may be fixed to a pouch battery, thereby further improving the stability of the entire battery.
According to another embodiment of the invention, the number of the direct battery pack layers in the laminate polymer battery and the number of the direct battery packs in each direct battery pack layer are not particularly limited, and those skilled in the art can select the direct battery packs according to actual needs. For example, laminate polymer battery can include 1 ~ 6 layers of battery directly to organize the layer, and every layer of battery directly links the group layer and can include 2 ~ 6 batteries and directly link the group, can more adapt to the demand of current new energy automobile to power battery package height and capacity from this.
According to another specific embodiment of the present invention, a plurality of soft-package cells in each cell stacked body 111 may be stacked by bonding with a structural adhesive, the polarities at two ends of the stacked cells are the same, so as to form a cell stacked body having a plurality of cells connected in parallel, and the battery direct-connection group layers 111 are welded or riveted in series to form the battery direct-connection group 110. All stretch out anodal ear and negative pole ear in every laminate polymer core, wherein anodal ear can be aluminium and/or aluminum alloy, and a plurality of anodal ears connect in parallel as anodal, and the negative pole ear can be copper and/or copper alloy, and a plurality of negative pole ears connect in parallel as the negative pole, and laminate polymer core shell can be the plastic-aluminum membrane.
According to another embodiment of the present invention, the thermal conductive adhesive 210 may be a thermal conductive gel, as shown in fig. 6 and 7, the thermal conductive gel is filled and distributed on the side surfaces of the parallel cells in the direct battery pack layer, and after the thermal conductive adhesive is filled, even if the direct battery pack layer is turned over by 180 degrees and the bottom of the direct battery pack layer is not supported, a sagging phenomenon does not occur. Further, before the parts of the two adjacent battery direct connection groups 110 with the heat conduction glue are attached to each other, the liquid cooling plate 220 is installed between the two battery direct connection groups 110, and the heat conduction glue on the side surfaces of the battery direct connection groups 110 is ensured to be in good contact with the liquid cooling plate through extrusion.
In summary, the pouch battery according to the above embodiment of the present invention has at least the following advantages: 1) the battery cells are in a flat-lying mode, each battery cell stacking body can respectively and independently comprise a plurality of parallel battery cells stacked along the height direction of the soft-package battery, and therefore the height requirement of the battery pack can be met by adjusting the stacking thickness of the plurality of layers of flat-lying battery cells in the battery cell stacking body and the number of layers of the direct battery pack; 2) the cooling adopts a mode that the liquid cooling plate is directly filled with heat-conducting glue and the gap between the battery direct connection assembly layers is directly contacted with the battery core, so that the cooling efficiency is higher; 3) when two adjacent battery direct-connecting groups arranged side by side are connected, the liquid cooling plate can be pressed between the two battery direct-connecting groups, the heat-conducting glue, the liquid cooling plate and the battery core are uniformly and tightly attached, a gap between the battery core and the liquid cooling plate is eliminated, and parts for supporting and fixing the liquid cooling plate are reduced or avoided, so that the cost of the battery can be reduced and the internal structure of the battery can be simplified; 4) only one liquid cooling plate is arranged in two adjacent battery direct-connection groups arranged in parallel, so that the heat of the multilayer battery core can be quickly led out, the internal structure of the battery is simpler, and the overall weight is lighter; 5) the liquid cooling plate adopts a wavy or zigzag bent plate, so that the contact area of the liquid cooling plate and the heat conducting glue and the flowing interval of cooling liquid in the liquid cooling plate can be further increased, the heat conducting efficiency can be further increased, and the cooling effect can be improved. Compared with the prior art, the soft package battery simultaneously improves the heat conduction efficiency from the arrangement mode of the liquid cooling plate and the liquid cooling plate structure, not only has good cooling effect, but also has simpler internal structure of the battery and small assembly difficulty, and can better meet the requirement of highly reducing the battery system.
According to a second aspect of the invention, a vehicle is proposed. According to an embodiment of the invention, the vehicle comprises the pouch battery described above. Power battery's radiating effect is good and light in weight in this vehicle, and the duration is more stable. 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 noted that the features and effects described for the pouch battery are also applicable to the vehicle, and are not described in detail here.
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. A pouch cell, comprising:
the battery module comprises at least one layer of battery direct connection group layer, each layer of battery direct connection group layer comprises at least two battery direct connection groups arranged side by side, each battery direct connection group comprises one battery cell stack body or a plurality of battery cell stack bodies connected in series, two ends of each battery direct connection group are respectively and independently provided with a first tab support, and two adjacent battery direct connection groups arranged side by side are connected through the first tab supports;
the cooling device comprises a heat conducting adhesive and a liquid cooling plate, the liquid cooling plate is a wavy bent plate or a zigzag bent plate, the liquid cooling plate is uniformly arranged between any two adjacent batteries in the battery direct connection group layer and arranged side by side, and the heat conducting adhesive is filled between the batteries direct connection group and the liquid cooling plate.
2. The laminate polymer battery as claimed in claim 1, wherein a first connection hole is formed in the first tab holder, a through hole corresponding to the first connection hole is formed in the liquid cooling plate, and the liquid cooling plate is connected with the battery direct connection unit through the through hole and the first connection hole.
3. The laminate battery according to claim 1 or 2, wherein a second tab support is disposed between two adjacent series-connected cell stacks in the battery direct connection group, and two adjacent battery direct connection group layers are connected through the first tab support and/or the second tab support.
4. The laminate battery according to claim 3, wherein the second tab holder has a second connecting hole, and the liquid cooling plate has at least one first protrusion connected to the second connecting hole in a mating manner.
5. The laminate polymer battery according to claim 1 or 4, wherein the arrangement and the number of the battery direct connection groups in each layer of the battery direct connection group layer are the same, and two adjacent columns of the battery direct connection groups arranged side by side in the multilayer battery direct connection group layer share one liquid cooling plate.
6. The pouch cell defined in claim 5 wherein the liquid-cooled plate houses a plurality of coolant channels, the plurality of coolant channels sharing one of the coolant inlets and one of the coolant outlets.
7. The laminate battery according to claim 1 or 6, wherein thermal insulation foam is independently provided between two adjacent cell stacks in the height direction of the battery module.
8. The pouch cell defined in claim 7, further comprising:
two guard plates, establish respectively two guard plates the lower surface of battery module with the upper surface of battery module, with every of guard plate contact electric core pile body with be equipped with thermal-insulated bubble cotton respectively independently between the guard plate.
9. The laminate polymer battery according to claim 8, wherein the first tab support is provided with a third connecting hole, the second tab support is provided with a fourth connecting hole, and each of the protection plates is independently provided with a fifth connecting hole or a second protrusion corresponding to the third connecting hole and/or the fourth connecting hole.
10. A vehicle characterized by comprising the pouch battery according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010366651.8A CN111477931A (en) | 2020-04-30 | 2020-04-30 | Laminate polymer battery and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010366651.8A CN111477931A (en) | 2020-04-30 | 2020-04-30 | Laminate polymer battery and vehicle |
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| Publication Number | Publication Date |
|---|---|
| CN111477931A true CN111477931A (en) | 2020-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010366651.8A Pending CN111477931A (en) | 2020-04-30 | 2020-04-30 | Laminate polymer battery and vehicle |
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| Country | Link |
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| CN (1) | CN111477931A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112259825A (en) * | 2020-10-19 | 2021-01-22 | 东风汽车集团有限公司 | Power battery integrated water cooling plate capable of meeting requirements of single-layer module and double-layer module |
| CN112928365A (en) * | 2021-02-09 | 2021-06-08 | 合肥国轩高科动力能源有限公司 | Power battery module and system thereof |
| CN113193280A (en) * | 2021-04-29 | 2021-07-30 | 合肥国轩高科动力能源有限公司 | Power battery module and system thereof |
| CN113314784A (en) * | 2021-06-01 | 2021-08-27 | 荣盛盟固利新能源科技有限公司 | Power battery module of integrated liquid cooling |
| WO2022041963A1 (en) * | 2020-08-24 | 2022-03-03 | 合肥国轩高科动力能源有限公司 | Soft-package module and electric vehicle comprising same |
| CN114583321A (en) * | 2022-02-10 | 2022-06-03 | 广州市垠瀚能源科技有限公司 | Battery module, battery package and car |
| CN116914327A (en) * | 2023-09-14 | 2023-10-20 | 厦门海辰储能科技股份有限公司 | Liquid cooling module, energy storage device and energy storage system |
| CN116937007A (en) * | 2023-09-15 | 2023-10-24 | 厦门海辰储能科技股份有限公司 | Energy storage device and energy storage system |
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- 2020-04-30 CN CN202010366651.8A patent/CN111477931A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022041963A1 (en) * | 2020-08-24 | 2022-03-03 | 合肥国轩高科动力能源有限公司 | Soft-package module and electric vehicle comprising same |
| CN112259825A (en) * | 2020-10-19 | 2021-01-22 | 东风汽车集团有限公司 | Power battery integrated water cooling plate capable of meeting requirements of single-layer module and double-layer module |
| CN112928365A (en) * | 2021-02-09 | 2021-06-08 | 合肥国轩高科动力能源有限公司 | Power battery module and system thereof |
| CN113193280A (en) * | 2021-04-29 | 2021-07-30 | 合肥国轩高科动力能源有限公司 | Power battery module and system thereof |
| CN113314784A (en) * | 2021-06-01 | 2021-08-27 | 荣盛盟固利新能源科技有限公司 | Power battery module of integrated liquid cooling |
| CN114583321A (en) * | 2022-02-10 | 2022-06-03 | 广州市垠瀚能源科技有限公司 | Battery module, battery package and car |
| CN114583321B (en) * | 2022-02-10 | 2024-01-30 | 广州市垠瀚能源科技有限公司 | Battery module, battery pack and automobile |
| CN116914327A (en) * | 2023-09-14 | 2023-10-20 | 厦门海辰储能科技股份有限公司 | Liquid cooling module, energy storage device and energy storage system |
| CN116914327B (en) * | 2023-09-14 | 2023-12-26 | 厦门海辰储能科技股份有限公司 | Liquid cooling module, energy storage device and energy storage system |
| CN116937007A (en) * | 2023-09-15 | 2023-10-24 | 厦门海辰储能科技股份有限公司 | Energy storage device and energy storage system |
| CN116937007B (en) * | 2023-09-15 | 2023-12-26 | 厦门海辰储能科技股份有限公司 | Energy storage device and energy storage system |
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