CN211980794U - Battery pack and vehicle - Google Patents

Abstract

The utility model discloses a battery package and vehicle. The battery pack comprises a battery module and a cooling device, wherein the battery module comprises battery direct connection group layers, each battery direct connection group layer at least comprises two battery direct connection groups which are arranged side by side at intervals, each battery direct connection group comprises one or more battery cell stacking bodies, two first tab supports at the same end of the two adjacent battery direct connection groups which are arranged side by side are connected, and an accommodating space is defined between the two battery direct connection groups and the first tab supports at the two ends; even have the heat-conducting plate and directly link group's layer heat laminating with the battery on the liquid cold plate among the cooling device, battery module upper and lower surface equipartition has put the liquid cold plate, one of them liquid cold plate with accommodation space encloses into the holding tank, and the heat-conducting plate inserts in the holding tank and the holding tank is by another liquid cold plate involution, and the heat-conducting glue sets up directly even between group and the heat-conducting plate at the battery. The cooling device in the battery pack has the effects of heat dissipation and protection, and is simple in internal structure and high in heat conduction efficiency of the battery.

Description

Battery pack and vehicle

Technical Field

The utility model belongs to the power battery field particularly, relates to battery package and vehicle.

Background

At present, liquid cooling battery modules are mostly adopted by new energy automobiles to provide power. But 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.

SUMMERY OF THE UTILITY MODEL

The present invention aims at solving at least one of the technical problems in the related art to a certain extent. To this end, an object of the present invention is to provide a battery pack and a vehicle. The cooling device in the battery pack has the heat dissipation and protection effects, and can enable a plurality of battery core stacking bodies to share one heat conduction plate, so that the battery pack is simple in inner structure, high in heat conduction efficiency of the battery, small in assembly difficulty and capable of better meeting the requirement for height reduction of the battery system.

According to the utility model discloses a first aspect, the utility model provides a battery package. According to the utility model discloses an embodiment, this battery package includes:

the battery module comprises at least one layer of battery direct connection assembly layer, each layer of battery direct connection assembly layer at least comprises two battery direct connection assemblies, each battery direct connection assembly comprises one or more battery cell stacking bodies, each battery cell stacking body respectively and independently comprises a plurality of battery cells stacked along the height direction of the battery module, a plurality of battery direct connection assemblies in each layer of battery direct connection assembly layer are arranged side by side at intervals, two ends of each battery direct connection assembly distributed along the length direction of the battery direct connection assembly layer are respectively and independently provided with a first tab support, two first tab supports at the same end of the two adjacent battery direct connection assemblies arranged side by side are connected, and an accommodating space is defined between the two battery direct connection assemblies and the first tab supports at the two ends;

cooling device, cooling device includes that the heat conduction glues, heat-conducting plate and two at least liquid cold boards, be connected with on the liquid cold board the heat-conducting plate, the liquid cold board with the battery directly links the group layer thermal contact just battery module upper surface and lower surface equipartition have been put the liquid cold board, one of them the liquid cold board with accommodation space encloses to close and forms the holding tank, the heat-conducting plate inserts in the holding tank just the holding tank is by another the involution of liquid cold board, arbitrary two adjacent and arrange side by side the battery directly links to organize between the equipartition and has been put the heat-conducting plate, the heat conduction glue sets up the battery directly link group with between the heat-conducting plate, the heat-conducting plate is in projection on the liquid cold board can be wave line or Z shape zigzag line.

The utility model discloses above-mentioned embodiment's battery package has following advantage at least: 1) the battery cell stacking body adopts a mode that the battery cells are laid horizontally, so that the height requirement of the battery pack can be met by adjusting the stacking thickness of a plurality of layers of 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 heat-conducting glue is directly filled in gaps between the heat-conducting plate and the stacked battery core body to directly contact the battery core, and the heat-conducting glue is filled and distributed on the side surfaces of all the parallel battery cores in the stacked battery core body, so that the cooling efficiency is higher; 3) the liquid cooling plate and the heat conducting plate can be fixed by utilizing the stacking structure of the battery module, and the inherent structure of the battery pack is utilized to replace a part for supporting and fixing the cooling device, 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; 4) the protective plate structure of the existing battery module can be replaced by the liquid cooling plate, so that the liquid cooling plate has cooling and protective effects, and cooling parts can be added on the basis of not increasing the structure of the existing battery module, so that the cooling effect can be improved, and the internal structure of the battery can be simplified; 5) two adjacent battery direct-connection groups arranged in parallel can be enabled to share one heat conduction plate, even two adjacent battery direct-connection groups arranged side by side in a plurality of battery direct-connection group layers can share one heat conduction plate, so that the number of the heat conduction plates in the cooling device can be greatly reduced, and the internal structure of the battery is simpler; 6) the projection of the heat conducting plate on the liquid cooling plate is a curve, so that the contact area of the heat conducting plate, the heat conducting glue and the liquid cooling plate can be further increased, and the cooling efficiency is further increased. Compared with the prior art, the cooling device in the battery pack has the heat dissipation and protection effects, and can enable the plurality of battery core stacking bodies to share one heat conduction plate, so that the battery pack is simple in internal structure, high in heat conduction efficiency of the battery, small in assembly difficulty and capable of meeting the requirement for height reduction of the battery system better.

In addition, the battery pack according to the above embodiment of the present invention may further have the following additional technical features:

optionally, the heat conducting plate is connected with the liquid cooling plate in a T-shaped manner and distributed on the upper side and/or the lower side of the liquid cooling plate.

Optionally, each layer of the battery direct connection group layer shares one liquid cooling plate, and at least one layer of the battery direct connection group layer shares one heat conducting plate with two adjacent columns of the battery direct connection group arranged side by side.

Optionally, the cooling device includes two liquid-cooling plates, one of the liquid-cooling plates is disposed on the lower surface of the battery module and the heat-conducting plates are disposed on the upper side of the liquid-cooling plate, and the other of the liquid-cooling plates is disposed on the upper surface of the battery module and the heat-conducting plates are disposed on the lower side of the liquid-cooling plate.

Optionally, each liquid cooling plate is respectively and independently provided with a heat-conducting glue filling port and a cover body matched with the heat-conducting glue filling port.

Optionally, heat insulation foam is independently arranged between any two adjacent layers of the battery cell stacking body, and heat insulation foam is independently arranged between the liquid cooling plate and any one of the battery direct connection group layers.

Optionally, a first fixing hole is formed in the first tab support, and a first connecting hole or a first protrusion corresponding to the first fixing hole is formed in the liquid cooling plate.

Optionally, each battery directly links group and includes a plurality of series connection the electric core stack body and adjacent two be equipped with the second utmost point ear support respectively independently between the electric core stack body, be equipped with the second fixed orifices on the second utmost point ear support, be equipped with on the liquid cooling plate with second connecting hole or second arch that the second fixed orifices corresponds.

Optionally, the ratio of the distance of the heat conducting plate in the direction perpendicular to the length direction of the battery straight connection group to the distance between two adjacent battery straight connection groups arranged side by side is (0.2-0.7): 1.

according to a second aspect of the present invention, the utility model provides a vehicle. According to the utility model discloses an embodiment, this vehicle includes foretell battery package. 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 diagram of the internal structure of a battery pack according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a single layer direct battery stack layer according to an embodiment of the present invention.

Fig. 3 is a plan view of a single layer direct battery stack layer according to an embodiment of the present invention.

Fig. 4 is a schematic structural diagram of a first tab holder in two adjacent battery direct connection groups arranged side by side according to an embodiment of the present invention.

Fig. 5 is a schematic structural diagram of a second ear support in two adjacent battery direct-connection groups arranged side by side according to an embodiment of the present invention.

Fig. 6 is a schematic structural diagram of a battery direct connection set according to an embodiment of the present invention.

Fig. 7 is a schematic structural diagram of a single layer direct battery stack layer according to yet another embodiment of the present invention.

Fig. 8 is a schematic diagram of a liquid-cooled panel according to an embodiment of the present invention.

Fig. 9 is a schematic structural view of a liquid-cooled panel according to yet another embodiment of the present invention.

Fig. 10 is a schematic diagram of the relative positions of the thermal insulation foam and the battery direct connection layer according to an 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 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 exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "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, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present 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," "attached," "secured," and the like are to be construed broadly and can include, for example, a fixed connection, a detachable connection, or an integral part; 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 term "thermal contact" may be direct contact or indirect contact through an intermediary. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art. In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. 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 the utility model discloses a first aspect, the utility model provides a battery package. According to the utility model discloses an embodiment, it is shown with reference to fig. 1 ~ 7, this battery package includes: a battery module 100 and a cooling device 200. The battery module 100 comprises at least one battery direct connection group layer 110, each battery direct connection group layer 110 at least comprises two battery direct connection groups 111, each battery direct connection group 111 comprises one or more battery cell stacked bodies A, each battery cell stacked body A respectively and independently comprises a plurality of battery cells stacked along the height direction of the battery module, the plurality of battery direct connection groups 111 in each battery direct connection group layer 110 are arranged side by side and at intervals, two ends of each battery direct connection group 111 distributed along the length direction of the battery direct connection group are respectively and independently provided with a first tab support 112, two first tab supports 112 at the same end of the two adjacent battery direct connection groups 111 arranged side by side are connected, a containing space is defined between the two battery direct connection groups 111 and the first tab supports 112 at the two ends, and the two first tab supports 112 can be attached and connected; cooling device 200 includes heat-conducting glue 210, heat-conducting plate 220 and two at least liquid-cooled boards 230, be connected with heat-conducting plate 220 on the liquid-cooled board, liquid-cooled board 230 and the direct group layer 110 thermal contact of battery and battery module 100 upper surface and lower surface equip with liquid-cooled board 230, one of them liquid-cooled board 230 encloses with accommodation space and closes formation holding tank 120, heat-conducting plate 220 inserts in holding tank 120 and holding tank 120 is closed by another liquid-cooled board 230, heat-conducting plate 220 has been seted up to arbitrary two adjacent and the group 111 of directly linking of battery that arrange side by side between 111, heat-conducting glue 210 sets up between group 111 of directly linking of battery and heat-conducting plate 220, the projection of heat-conducting plate 220 on liquid-cooled board 230 can be wave. The cooling device in the battery pack has the heat dissipation and protection effects, and can enable a plurality of battery core stacking bodies to share one heat conduction plate, so that the battery pack is simple in inner structure, high in heat conduction efficiency of the battery, small in assembly difficulty and capable of better meeting the requirement for height reduction of the battery system. Note that the liquid cooling plate has a cooling liquid passage built therein and the heat conducting plate does not have a cooling liquid passage.

The battery pack according to the above embodiment of the present invention will be described in detail with reference to fig. 1 to 10.

According to the utility model discloses a specific embodiment, heat-conducting plate 220 is connected and can distribute at the upside and/or the downside of liquid cooling board 230 with liquid cooling board 230 for the T type, and electric core transmits the heat to the heat-conducting plate through heat-conducting glue, transmits electric core heat to liquid cooling board through the heat-conducting plate, later takes away the heat through the coolant liquid in the liquid cooling board.

According to the utility model discloses a still another embodiment, heat-conducting glue can be heat-conducting gel, and heat-conducting gel coefficient of heat conductivity is not less than 1W/m K, can further improve cooling device's radiating effect from this.

According to the utility model discloses a still another embodiment, every layer of battery directly links group layer 110 can share a liquid cooling board 230, and adjacent two of at least one deck battery directly links group 111 sharing a heat-conducting plate of arranging side by side in group layer 110. Therefore, the structure of the cooling device can be further simplified, the heat dissipation efficiency of the battery core can be ensured, and the heat of each battery core can be timely transmitted to the heat-conducting glue and then led out through the heat-conducting plate to be taken away by the liquid cooling plate. It should be noted that the battery straight-connected groups in the battery module are stacked in rows along the height direction of the module.

According to still another embodiment of the present invention, referring to fig. 1, the cooling device 200 may include two liquid-cooled plates 230, one liquid-cooled plate 230 disposed on the lower surface of the battery module 100 and the heat-conducting plate 220 disposed on the upper side of the liquid-cooled plate 230, the other liquid-cooled plate 230 disposed on the upper surface of the battery module 100 and the heat-conducting plate 220 disposed on the lower side of the liquid-cooled plate, namely, the liquid cooling plate is respectively in thermal contact with the lower surface of the battery direct connection group layer at the bottommost layer and the upper surface of the battery direct connection group at the topmost layer, therefore, the structure of the cooling device can be further simplified, the heat of each battery cell can be timely transferred to the heat-conducting glue and led out by the liquid cooling plate through the heat-conducting plate, the battery cells in the battery cell stacking body can be effectively protected, the damage to the battery cells during transportation or assembly can be avoided, simultaneously can the involution holding tank, avoid the heat-conducting glue because of the battery module vibrations lead to overflowing in the operation process. Further, the two adjacent rows of the battery direct connection groups 111 arranged side by side preferably share one heat conduction plate, so that not only can the cooling effect be ensured, but also the number of cooling plates can be further reduced, and the internal structure of the battery can be simplified.

According to the utility model discloses a still another embodiment, as shown in fig. 8, can be respectively independent in every liquid cooling board 230 be equipped with another liquid cooling board 230 the heat-conducting plate 220 match continuous recess 231, can make two liquid cooling board mutual locks of arranging from top to bottom from this, thereby not only can ensure in the holding tank that each high position is equallyd divide cloth and have the heat-conducting plate, guarantee the radiating efficiency, can also make reciprocal anchorage between the liquid cooling board, guarantee the involution effect of holding tank and liquid cooling board, avoid the heat-conducting glue because of battery module vibrations lead to spill over in the operation, can also further improve the stability of whole battery module on the basis that does not increase extra fixed annex simultaneously.

According to the utility model discloses a still another embodiment, can be respectively independent be equipped with on every liquid-cooled board 230 and glue the fill opening with the heat conduction (not shown) and glue the lid (not shown) that the fill opening matches with the heat conduction, wherein the heat conduction glues the fill opening and can be close to heat-conducting plate 220 and correspond holding tank 120 and arrange, can also further utilize the heat conduction to glue the fill opening and fill the heat conduction after the heat-conducting plate inserts the holding tank and glue from this, guarantee to glue, do not have air gap and form good heat conduction route between heat-conducting plate and the electricity core.

According to another embodiment of the present invention, each liquid-cooled plate 230 may independently contain a plurality of coolant channels, and the plurality of coolant channels share a coolant inlet 232 and a coolant outlet 233. Therefore, the circulating flow of the cooling liquid in the liquid cooling plate can be accelerated, the heat of the battery module is taken away quickly through the cooling liquid, the cooling effect is improved, and the structure of the cooling device can be further simplified. As shown in fig. 9, the cooling fluid inlet 232 and the cooling fluid outlet 233 may be respectively disposed at two sides of the liquid-cooled plate 230 along the length direction of the battery string 111, and preferably, the cooling fluid inlet 232 and the cooling fluid outlet 233 are disposed adjacent to the connection point of the liquid-cooled plate 230 and the first tab support 112.

According to another embodiment of the present invention, as shown in fig. 7 and 9, the first tab holder 112 may be provided with a first fixing hole 114, and the liquid cooling plate 230 is provided with a first connecting hole 234 or a first protrusion 234 corresponding to the first fixing hole 114. From this can make liquid cold drawing and the fixed linking to each other of group layer is directly connected to the battery through first arch and first fixed orifices lock, or utilize the connecting piece to make liquid cold drawing and the fixed linking to each other of group layer is directly connected to the battery through first fixed orifices and first connecting hole.

According to the utility model discloses a still another embodiment, as shown in fig. 7 and fig. 9, every battery is directly even group 111 can include that a plurality of electric core stack a along its length direction series connection and adjacent two electric core stack a between be equipped with second utmost point ear support 113 respectively independently, be equipped with second fixed orifices 115 on the second utmost point ear support 113, be equipped with the second connecting hole 235 or the second is protruding 235 that corresponds with second fixed orifices 115 on the liquid cooling plate 230, can further assist the liquid cooling board to link to each other with battery directly group layer is fixed through second arch and second fixed orifices lock from this, or utilize the connecting piece to further assist the liquid cooling board to link to each other with battery directly group layer is fixed through second fixed orifices and second connecting hole. As shown in fig. 5, the second pole ear supports 113 in any two adjacent battery straight groups 111 arranged side by side are not attached to each other.

According to the utility model discloses a still another embodiment, first utmost point ear support 112 and second utmost point ear support 113 can independently be the insulating plastic support respectively, not only can further be favorable to improving the security and the reliability of battery from this, can also reduce the whole weight of battery. It should be noted that the first tab support 112 and the second tab support 113 may be used for supporting the tabs independently, and may be fixedly connected to the adjacent battery direct connection group (layer) and the liquid cooling plate, where the connection may be welding or riveting, such as laser welding, ultrasonic welding, or screw and rivet connection. Two first tab brackets 112 positioned at the same end of any two adjacent battery direct connection groups 111 arranged side by side can be welded or jointed through screw and bolt connection.

According to the utility model discloses a still another embodiment, as shown in fig. 10, can be respectively independent between arbitrary adjacent two-layer electric core stack A be equipped with thermal-insulated bubble cotton 300, the cold-plate 230 and arbitrary one battery directly can be respectively independent between the group layer A be equipped with thermal-insulated bubble cotton 300, wherein thermal-insulated bubble cotton 300 can only support in first utmost point ear support 112 and/or second utmost point ear support 113, can make the upper and lower two faces of each electric core stack A all be formed with thermal-insulated bubble cotton from this, thereby can separate the electric core heat conduction route between each electric core stack, the difference in temperature is too big between the electric core when avoiding heat conduction.

According to another specific embodiment of the present invention, the ratio of the distance between the heat conducting plate 220 in the direction perpendicular to the length direction of the battery straight connecting group 111 and the distance between the two adjacent battery straight connecting groups 111 arranged side by side may be (0.2-0.7): 1, not only can avoid influencing its abundant contact and the heat transfer effect with electric core because of the heat conduction glue is too little from this, can also avoid answering the heat-conducting plate too thin and influencing the heat transfer capacity in unit interval to can further improve cooling device to the cooling efficiency and the cooling effect of electric core.

According to the utility model discloses a still another embodiment, heat-conducting plate 220 and liquid cold drawing 230 can integrated into one piece, or form integratively through the welding, ensure that the two is connected the position heat conduction and is contacted well, no air gap, wherein, the welding can adopt welding methods such as soldering, argon arc welding. In addition, the heat conducting plate and the liquid cooling plate can be made of metal with good heat conduction, such as aluminum and aluminum alloy, copper and copper alloy, and the like.

According to the utility model discloses a further embodiment, every layer of battery directly links the arrangement and the number homogeneous phase of group 111 in the group layer 110 directly to the battery, and adjacent two-layer battery directly links group layer 110 and can establish ties the setting, and every layer of battery directly links group 110 directly to the battery and can connect the setting in parallel in the group layer 110. A plurality of soft-packaged electric cores can stack through the structure gluing bonding in electric core stack body A, and the polarity that piles up electric core both ends is the same, forms the stack group that has a plurality of parallelly connected electric cores, and electric core stack body A series connection welding or riveting get up and form the battery and directly link group 111. 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.

To sum up, the utility model discloses above-mentioned embodiment's battery package has following advantage at least: 1) the battery cell stacking body adopts a mode that the battery cells are laid horizontally, so that the height requirement of the battery pack can be met by adjusting the stacking thickness of a plurality of layers of 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 heat-conducting glue is directly filled in gaps between the heat-conducting plate and the stacked battery core body to directly contact the battery core, and the heat-conducting glue is filled and distributed on the side surfaces of all the parallel battery cores in the stacked battery core body, so that the cooling efficiency is higher; 3) the liquid cooling plate and the heat conducting plate can be fixed by utilizing the stacking structure of the battery module, and the inherent structure of the battery pack is utilized to replace a part for supporting and fixing the cooling device, 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; 4) the protective plate structure of the existing battery module can be replaced by the liquid cooling plate, so that the liquid cooling plate has cooling and protective effects, and cooling parts can be added on the basis of not increasing the structure of the existing battery module, so that the cooling effect can be improved, and the internal structure of the battery can be simplified; 5) two adjacent battery direct-connection groups arranged in parallel can be enabled to share one heat conduction plate, even two adjacent battery direct-connection groups arranged side by side in a plurality of battery direct-connection group layers can share one heat conduction plate, so that the number of the heat conduction plates in the cooling device can be greatly reduced, and the internal structure of the battery is simpler; 6) the projection of the heat conducting plate on the liquid cooling plate is a curve, so that the contact area of the heat conducting plate, the heat conducting glue and the liquid cooling plate can be further increased, and the cooling efficiency is further increased. Compared with the prior art, the cooling device in the battery pack has the heat dissipation and protection effects, and can enable the plurality of battery core stacking bodies to share one heat conduction plate, so that the battery pack is simple in internal structure, high in heat conduction efficiency of the battery, small in assembly difficulty and capable of meeting the requirement for height reduction of the battery system better.

According to a second aspect of the present invention, the utility model provides a vehicle. According to the utility model discloses an embodiment, this vehicle includes foretell battery package. 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 battery pack 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, 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 without departing from the scope of the present invention.

Claims (10)

1. A battery pack, comprising:

the battery module comprises at least one layer of battery direct connection assembly layer, each layer of battery direct connection assembly layer at least comprises two battery direct connection assemblies, each battery direct connection assembly comprises one or more battery cell stacking bodies, each battery cell stacking body respectively and independently comprises a plurality of battery cells stacked along the height direction of the battery module, a plurality of battery direct connection assemblies in each layer of battery direct connection assembly layer are arranged side by side at intervals, two ends of each battery direct connection assembly distributed along the length direction of the battery direct connection assembly layer are respectively and independently provided with a first tab support, two first tab supports at the same end of the two adjacent battery direct connection assemblies arranged side by side are connected, and an accommodating space is defined between the two battery direct connection assemblies and the first tab supports at the two ends;

cooling device, cooling device includes that heat-conducting glue, heat-conducting plate and two at least liquid cold boards, be connected with on the liquid cold board the heat-conducting plate, the liquid cold board with the battery directly links the group layer thermal contact just battery module upper surface and lower surface equipartition have been put the liquid cold board, one of them the liquid cold board with accommodation space encloses to close and forms the holding tank, the heat-conducting plate inserts in the holding tank just the holding tank is by another the involution of liquid cold board, arbitrary two adjacent and arrange side by side the battery directly links to organize between the equipartition and has been put the heat-conducting plate, the heat-conducting glue sets up the battery directly link group with between the heat-conducting plate, the heat-conducting plate is in projection on the liquid cold board is wave line or Z shape zigzag line.

2. The battery pack of claim 1, wherein the thermally conductive plate is T-shaped coupled to the liquid-cooled plate and is disposed on an upper side and/or a lower side of the liquid-cooled plate.

3. The battery pack according to claim 1 or 2, wherein each layer of the battery direct connection group layer shares one liquid cooling plate, and at least one layer of the battery direct connection group layer shares one heat conducting plate with two adjacent columns of the battery direct connection groups arranged side by side.

4. The battery pack according to claim 3, wherein the cooling device includes two liquid-cooled plates, one of the liquid-cooled plates is disposed on the lower surface of the battery module and the heat-conductive plates are disposed on the upper side of the liquid-cooled plate, and the other of the liquid-cooled plates is disposed on the upper surface of the battery module and the heat-conductive plates are disposed on the lower side of the liquid-cooled plate.

5. The battery pack according to claim 4, wherein each of the liquid-cooling plates is independently provided with a heat conductive adhesive filling opening and a cover body matching with the heat conductive adhesive filling opening.

6. The battery pack according to claim 1 or 5, wherein thermal insulation foam is independently arranged between any two adjacent battery cell stacked layers, and thermal insulation foam is independently arranged between the liquid cooling plate and any one of the battery direct connection group layers.

7. The battery pack according to claim 6, wherein the first tab holder has a first fixing hole, and the liquid cooling plate has a first connecting hole or a first protrusion corresponding to the first fixing hole.

8. The battery pack according to claim 7, wherein each of the battery direct connection groups includes a plurality of the battery cell stacks connected in series, and a second tab bracket is independently disposed between two adjacent battery cell stacks, and a second fixing hole is disposed on the second tab bracket, and a second connecting hole or a second protrusion corresponding to the second fixing hole is disposed on the liquid cooling plate.

9. The battery pack according to claim 7 or 8, wherein the ratio of the distance of the heat conducting plate in the direction perpendicular to the length direction of the straight battery pack to the distance between two adjacent straight battery packs arranged side by side is (0.2-0.7): 1.

10. a vehicle characterized by comprising the battery pack according to any one of claims 1 to 9.

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