CN213026305U - Power battery package and vehicle - Google Patents

Power battery package and vehicle Download PDF

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Publication number
CN213026305U
CN213026305U CN202021143842.XU CN202021143842U CN213026305U CN 213026305 U CN213026305 U CN 213026305U CN 202021143842 U CN202021143842 U CN 202021143842U CN 213026305 U CN213026305 U CN 213026305U
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CN
China
Prior art keywords
battery pack
power battery
upper cover
single batteries
heat
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Active
Application number
CN202021143842.XU
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Chinese (zh)
Inventor
孙华军
朱燕
任正华
唐江龙
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BYD Co Ltd
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BYD Co Ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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
    • H01M10/6561—Gases
    • H01M10/6563—Gases with forced flow, e.g. by blowers
    • 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
    • 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

Abstract

The application discloses power battery package and vehicle, power battery package includes: the upper cover is connected with the tray to limit a single battery accommodating cavity; the single batteries are arranged in the single battery accommodating cavities, the single batteries are square batteries, the single batteries are arranged along the thickness direction of the single batteries, and a heat conduction insulating layer is arranged between the single batteries and the upper cover; the upper cover comprises a heat-conducting plate. The power battery pack has the advantages of simple structure, low assembly cost, high energy density and strong heat dissipation capability, and does not need to consume the cooling capacity of the whole vehicle during heat dissipation.

Description

Power battery package and vehicle
Technical Field
The application belongs to the technical field of power battery manufacturing, and particularly relates to a power battery pack and a vehicle with the same.
Background
The temperature distribution of the power battery pack has a great influence on the service life and the endurance capacity of the power battery pack, and in the related art, a thermal management system of the power battery pack generally comprises an air cooling type and a liquid cooling type.
For the air-cooled heat management system, because equipment such as a fan and an air duct needs to be added, the design difficulty is increased, the light weight and the compactness are not facilitated, and the running of the whole vehicle is influenced by consuming the electric energy of a power battery pack during the running of the fan.
For the liquid-cooled heat management system, the cooling liquid flows through the heat management system, once the cooling liquid leaks, the battery inside the battery pack can be damaged, so that the performance of the battery is influenced, parts such as a liquid cooling pipeline and the like need to be added, the process difficulty is increased, the light weight and the compactness are not facilitated, meanwhile, the liquid-cooled heat management system has certain energy consumption, the load of a power battery is further increased, and the endurance of the whole vehicle is influenced.
SUMMERY OF THE UTILITY MODEL
In the power battery pack in the related art, because the plurality of single batteries are firstly assembled on the module frame to form the battery module and then are installed in the battery pack shell, the module frame occupies a large part of the installation space in the battery pack shell, the utilization efficiency of the installation space in the battery pack shell is reduced, the number of the single batteries in the battery pack is reduced, and the battery capacity of the battery pack is influenced. In addition, due to the unevenness of the outer shape of the module frame, it is difficult for the unit batteries to be closely arranged in the battery pack, further reducing the utilization rate of the installation space in the battery pack.
The application provides a power battery package, and wherein a plurality of battery cell direct mount have reduced the use of module frame in the battery package shell. Therefore, the utilization of the installation space in the battery pack shell is improved, the number of the single batteries installed in the battery pack shell is increased, the battery capacity of the power battery pack is improved, and the cruising ability is improved.
Due to the fact that the use of the module frame is reduced, the number of components and assembly procedures are reduced, and cost is reduced.
The application provides a power battery package includes: the upper cover is connected with the tray to limit a single battery accommodating cavity; the single batteries are arranged in the single battery accommodating cavities, the single batteries are square batteries, the single batteries are arranged along the thickness direction of the single batteries, and a heat conduction insulating layer is arranged between the single batteries and the upper cover; the upper cover comprises a heat-conducting plate.
The power battery pack has the advantages of simple structure, low assembly cost, high energy density and strong heat dissipation capability, and does not need to consume the cooling capacity of the whole vehicle during heat dissipation.
The application also provides a vehicle with the power battery pack.
The vehicle and the power battery pack have the same advantages compared with the prior art, and the detailed description is omitted.
Additional aspects and advantages of the present application 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 present application.
Drawings
The above and/or additional aspects and advantages of the present application 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 power battery pack according to an embodiment of the present application;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is a top view of a power battery pack on the top cover side according to an embodiment of the present application;
FIG. 4 is an enlarged view of a portion of FIG. 3 at B;
FIG. 5 is a cross-sectional view taken at C-C of FIG. 3;
FIG. 6 is an enlarged view of a portion of FIG. 5 at D;
fig. 7 is a schematic view of a cooling principle when the power battery pack according to the embodiment of the present application is mounted on a vehicle;
fig. 8 is a schematic diagram of an arrangement of unit cells in a power battery pack according to an embodiment of the present application;
fig. 9 is a schematic structural diagram of a unit cell arranged in a tray in a power battery pack according to an embodiment of the present application.
Reference numerals:
the vehicle comprises a vehicle 1000, a power battery pack 100, a battery pack shell 110, a tray 111, an upper cover 112, a heat conducting plate 1121, heat conducting fins 1122, an air passing duct 1123, single batteries 120, a heat conducting insulating layer 130, an end plate 140, a chassis 200, a fixing surface 210 and an air duct 220.
Detailed Description
Reference will now be made in detail to embodiments of the present application, 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 exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.
A power battery pack 100 according to an embodiment of the present application is described below with reference to fig. 1 to 9.
Unless otherwise specified, the front-rear direction in the present application is the longitudinal direction of the vehicle 1000, i.e., the X direction; the left-right direction is the lateral direction of the vehicle 1000, i.e., the Y direction; the up-down direction is the vertical direction of the vehicle 1000, i.e., the Z direction.
The power battery pack 100 of the embodiment of the present application includes: a tray 111, an upper cover 112, and a plurality of unit batteries 120.
The upper cover 112 is connected to the tray 111 to define a single battery accommodating cavity, the plurality of single batteries 120 are mounted in the single battery accommodating cavity, a heat conducting insulating layer 130 is disposed between the single batteries 120 and the upper cover 112, and the upper cover 112 includes a heat conducting plate 1121.
It should be noted that, in the power battery pack 100 provided in the present application, the plurality of unit batteries 120 are directly mounted in the unit battery accommodating cavities, so that the use of the module frame is reduced.
Because the single batteries 120 are directly installed in the battery pack shell 110, the use frame of the module frame is reduced, so that the utilization of the installation space in the battery pack shell 110 is improved, the number of the single batteries 120 installed in the battery pack shell 110 is increased, the battery capacity of the power battery pack 100 is improved, and the cruising ability is improved.
In addition, since the number of frames used for the module frame is reduced, the unit batteries 120 can be more closely arranged in the battery pack case 110, the utilization rate of the installation space in the battery pack case 110 is further improved, and the number of the unit batteries 120 is increased.
Because the use frame of module frame has been reduced, reduced component quantity and assembly process, the cost is reduced.
The tray 111 and the upper cover 112 are used for protecting the single batteries 120 inside, the upper cover 112 can also play a role in heat dissipation, and the battery pack case 110 can be made of a metal material with high thermal conductivity, including but not limited to aluminum, copper and alloys thereof.
After the power battery pack 100 is installed on the whole vehicle, the upper cover 112 can be cooled by natural wind directly during the driving of the vehicle 1000, so that the cooling of the inner single battery 120 is realized by natural convection. The thermal insulation layer 130 may be disposed on a side surface of the unit cell 120 adjacent to the upper cover 112, which may increase an effective heat dissipation area between the unit cell 120 and the upper cover 112.
In the power battery pack 100 described herein, the heat conduction path from the battery cells 120 to the upper cover 112 is short, so that heat management can be performed through the upper cover 112, and the upper cover 112 is far away from the road surface, which can prevent stones, protrusions, and the like on the road surface from damaging the upper cover 112 for heat dissipation.
That is to say, this application through the heat management structure with power battery package 100 structure with upper cover 112 direct cooling formula combine, can realize power battery package 100's high battery capacity, strong heat-sinking capability, and whole power battery package 100's simple structure need not to increase extra heat management structure with whole car cooperation, also does not have the energy consumption.
The power battery pack 100 is simple in structure, low in assembly cost, high in energy density, strong in heat dissipation capacity and free of consumption of cooling capacity of the whole vehicle during heat dissipation.
As shown in fig. 8 and 9, the unit cell 120 is a rectangular cell having a rectangular parallelepiped structure and has a length L, a thickness D, and a height H between the length L and the thickness D, and the plurality of unit cells 120 are arranged in the thickness D direction of the unit cells. In this way, a high density of cell arrangements can be achieved within the cell receiving cavity, and each cell has a surface for heat dissipation with the upper cover 112. As shown in fig. 8, end plates 140 may be mounted to the outer sides of the outermost two unit cells 120 in the thickness D direction of the unit cells 120, and the unit cells 120 may be connected to the tray 111 through the end plates 140.
As shown in fig. 5, 8 and 9, the outer surface of the single cell 120 includes two large surfaces and two narrow surfaces, the area of the large surfaces is larger than that of the narrow surfaces, the two large surfaces of the single cell 120 are opposite in the thickness direction D of the single cell, the two narrow surfaces of the single cell 120 are opposite in the height direction H of the single cell 120, and two adjacent single cells 120 are arranged in the single cell accommodating cavity in a large-surface-to-large-surface manner. Wherein, the long side of the large surface is the length of the single battery 120, and the short side of the large surface is the height of the single battery 120; the long side of the narrow side is the length of the cell 120, and the short side of the narrow side is the thickness of the cell 120.
As shown in fig. 9, the tray 111 includes a bottom plate and side frames. Wherein the side frames are arranged around the bottom plate. One of the two narrow faces of the unit cell 120 faces the upper cover 112, and the other of the two narrow faces of the unit cell 120 faces the bottom plate.
The heat conducting insulating layer 130 may be disposed on a side surface of the single battery 120 close to the upper cover 112, and it is understood that the heat conducting insulating layer 130 is disposed between the narrow surface of the single battery 120 facing the upper cover 112 and the upper cover 112.
The heat conductive insulating layer 130 is disposed on a side surface of the unit battery 120 close to the bottom plate, and it is understood that the heat conductive insulating layer 130 is disposed between a narrow surface of the unit battery 120 facing the bottom plate and the bottom plate.
As shown in fig. 1 to 6, a power battery pack 100 according to an embodiment of the present application includes: a battery pack case 110 and a plurality of unit batteries 120. The battery pack case 110 is a cavity wall of the battery cell accommodating cavity. The upper cover 112 is connected with the tray to define a single battery accommodating cavity, i.e., the tray 111 and the upper cover 112 together form a battery pack case 110.
The battery pack shell 110 is made of a metal material, the single batteries 120 are installed in the battery pack shell 110, each single battery 120 is provided with a battery shell, a battery core arranged in the battery shell and a leading-out terminal connected with the battery core and extending out of the battery shell, the battery pack shell 110 is filled with a heat conduction insulating layer 130, and the heat conduction insulating layer 130 wraps the single batteries 120. The battery pack housing 110 is also a cavity wall of the battery cell accommodating cavity.
In the power battery pack 100 provided by the present application, the plurality of unit batteries 120 are directly mounted in the battery pack case 110, so that the use of a module frame is reduced.
Because the single batteries 120 are directly installed in the battery pack shell 110, the use frame of the module frame is reduced, so that the utilization of the installation space in the battery pack shell 110 is improved, the number of the single batteries 120 installed in the battery pack shell 110 is increased, the battery capacity of the power battery pack 100 is improved, and the cruising ability is improved.
In addition, since the number of frames used for the module frame is reduced, the unit batteries 120 can be more closely arranged in the battery pack case 110, the utilization rate of the installation space in the battery pack case 110 is further improved, and the number of the unit batteries 120 is increased.
Because the use frame of module frame has been reduced, reduced component quantity and assembly process, the cost is reduced.
In the power battery pack 100 provided by the present application, the plurality of unit batteries 120 are arranged side by side along the thickness direction of the unit batteries 120.
The battery pack case 110 made of a metal material is used to protect the internal unit batteries 120, and has a heat dissipation effect, and the battery pack case 110 may be made of a metal material with high thermal conductivity, including but not limited to aluminum, copper, and alloys thereof.
In practical implementation, the battery pack case 110 may be made of aluminum alloy material, which has good thermal conductivity, low density, light weight, and low price.
The heat-conducting insulation layer 130 filled in the battery pack case 110 can prevent the single battery 120 from being conducted with the battery pack case 110, and can increase the contact area between the single battery 120 and the battery pack case 110, thereby performing a heat-conducting function,
in actual implementation, the heat conducting insulation layer 130 may be heat conducting silica gel, the insulation property and the heat conducting performance of the heat conducting silica gel are both good, the heat conducting silica gel may conduct the heat of the battery cell 120 to the battery pack case 110 in time, the heat conducting silica gel further has certain viscosity, the battery cell 120 may be bonded with the battery pack case 110 through the heat conducting silica gel, and thus the battery cell 120 is fixed by the heat conducting insulation layer 130. Moreover, the heat-conducting silica gel can connect the battery pack shell 110 and the single battery 120 into a whole, which is beneficial to improving the structural strength of the whole battery pack.
After the power battery pack 100 is installed on the whole vehicle, the battery pack shell 110 can be cooled by directly utilizing natural wind in the driving process of the vehicle 1000, so that the cooling of the inner single battery 120 is realized by natural convection.
On the other hand, in the power battery pack 100 of the present application, the heat conduction path from the battery cells 120 to the battery pack case 110 is short, so that the heat management can be performed through the battery pack case 110 itself.
That is to say, through combining the power battery pack 100 structure described in this application with the heat management structure of battery pack shell 110 direct cooling type, can realize power battery pack 100's high battery capacity, strong heat-sinking capability, and whole power battery pack 100's simple structure need not to increase extra heat management structure with whole car cooperation, also does not have energy consumption.
The power battery pack 100 is simple in structure, low in assembly cost, high in energy density, strong in heat dissipation capacity and free of consumption of cooling capacity of the whole vehicle during heat dissipation.
In some embodiments, as shown in fig. 2, the battery pack case 110 includes: a tray 111 and an upper cover 112.
The tray 111 includes a side frame and a bottom plate, in an actual implementation, the side frame is a four-square frame, and the bottom plate is fixedly connected to a bottom surface of the side frame, and in some embodiments, the bottom plate is fixedly connected to a bottom surface of the side frame by welding. A heat conductive insulating layer 130 may be disposed between the unit batteries 120 and the base plate, and the heat conductive insulating layer 130 is disposed on one side surface of the unit batteries 120 near the base plate. This can increase the actual heat transfer area between the lower surface of the unit battery 120 and the bottom plate, which can also have a heat dissipation effect.
The upper cover 112 and the bottom plate may be made of an aluminum alloy material. The aluminum alloy material has good heat-conducting property, small density, light weight and low price.
In an actual implementation, the single battery 120 may be supported on the side frame of the tray 111, and the lower surface of the single battery 120 is spaced apart from the bottom plate of the tray 111, so that the rigidity and strength of the single battery 120 are substantially greater than those of the side frame of the bottom plate, and the heat conducting insulating layer 130 may be sandwiched between the single battery 120 and the bottom plate.
The upper cover 112 is coupled with the tray 111 to define a unit battery receiving chamber in which the unit battery 120 is mounted. In a practical implementation, the upper cover 112 is coupled to the upper end of the side frame to seal the recessed cavity of the tray 111.
The tray 111 is connected with the upper cover 112 through a threaded connector, or the tray 111 is connected with the upper cover 112 through an adhesive, or the tray 111 is connected with the upper cover 112 through a threaded connector and an adhesive. In actual implementation, an adhesive is sandwiched between the upper end of the tray 111 and the lower surface of the upper cover 112 to realize sealing and preliminary connection, and a threaded connector is arranged on the outer ring of the adhesive to further reinforce the connection between the tray 111 and the upper cover 112.
As shown in fig. 2, 4 and 6, the upper cover 112 includes a heat conducting plate 1121 and heat conducting fins 1122, the heat conducting plate 1121 is connected to the tray 111 to define a cell accommodating cavity, a heat conducting insulating layer 130 is interposed between the heat conducting plate 1121 and the cell 120, and the heat conducting fins 1122 are disposed on a surface of the heat conducting plate 1121 on a side away from the cell 120.
The heat conduction plate 1121 is used to seal the cell accommodating cavity, and the heat of the cell 120 can be conducted to the heat conduction plate 1121 through the heat conduction insulation layer 130, and the heat conduction fins 1122 are used to enhance the heat dissipation area of the upper cover 112, so as to improve the heat conduction efficiency between the heat conduction plate 1121 and the cell 120.
As shown in fig. 2 and 4, the heat-conducting fins 1122 are multiple, and the multiple heat-conducting fins 1122 are parallel to each other and spaced apart from each other, and a wind passing channel 1123 is defined between two adjacent heat-conducting fins 1122. After the power battery pack 100 is mounted on the entire vehicle, the extending direction of the heat-conducting fins 1122 is the X direction, so that in the forming process of the vehicle 1000, cooling air along the X direction can pass through the air passing channels 1123 between the heat-conducting fins 1122, and efficient heat dissipation is achieved.
The present application further discloses a vehicle 1000.
The vehicle 1000 according to the embodiment of the present application includes the power battery pack 100 according to any one of the embodiments described above.
The vehicle 1000 of the embodiment of the present application may be an electric vehicle 1000, including an electric passenger vehicle or an electric passenger car.
In some embodiments, at least a portion of a surface of power pack 100 is exposed to the exterior of vehicle 1000. Thus, the power battery pack 100 has a large contact area with external natural wind, and the overall heat dissipation effect is good.
In other embodiments, as shown in fig. 7, the chassis 200 of the vehicle 1000 has a U-shaped fixing plate, the front and rear ends of which are open, the power battery pack 100 is mounted to the fixing plate, and the upper surface of the power battery pack 100 is spaced apart from the upper fixing surface 210 to form the air duct 220. Wherein the fixing plate is a bottom plate of the chassis 200.
In a practical implementation, the fixing plate, the power battery pack 100 and the upper fixing surface 210 may be connected by a threaded fastener. The two ends of the fixing plate in the X direction are not provided with baffles, so that natural wind blows through the ventilation duct 220 above the power battery pack 100 in the driving process of the vehicle 1000, and the temperature of the battery pack is reduced by forced convection.
In this way, the fixing plate below can protect the power battery pack 100, prevent hard objects or splashed stones on the road surface from damaging the power battery pack 100, and the natural wind above can radiate the upper cover 112 well.
In this embodiment, the upper cover 112 of the power battery pack 100 includes a heat conducting plate 1121 and heat conducting fins 1122, the heat conducting plate 1121 is connected to the tray 111 to define a cell accommodating cavity, a heat conducting insulating layer 130 is interposed between the heat conducting plate 1121 and the cell 120, and the heat conducting fins 1122 are disposed on the surface of the heat conducting plate 1121 facing away from the cell 120.
In the description herein, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like means 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 application. In this specification, the schematic representations of the terms used above do not necessarily 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.
While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims (16)

1. A power battery pack, comprising:
the upper cover is connected with the tray to limit a single battery accommodating cavity;
the single batteries are arranged in the single battery accommodating cavities, the single batteries are square batteries, the single batteries are arranged along the thickness direction of the single batteries, and a heat conduction insulating layer is arranged between the single batteries and the upper cover;
the upper cover comprises a heat-conducting plate.
2. The power battery pack of claim 1, wherein the battery cells are prismatic cells of rectangular parallelepiped configuration and have a length, a thickness and a height between the length and thickness.
3. The power battery pack according to claim 1, wherein the outer surfaces of the single batteries comprise two large surfaces and two narrow surfaces, the area of the large surfaces is larger than that of the narrow surfaces, the two large surfaces of the single batteries are opposite in the thickness direction of the single batteries, the two narrow surfaces of the single batteries are opposite in the height direction of the single batteries, and two adjacent single batteries are arranged in the single battery accommodating cavity in a large-surface-to-large-surface mode.
4. The power battery pack of claim 3, wherein the tray includes a bottom plate and a side frame disposed around the bottom plate, one of the two narrow faces of the battery cell facing the upper cover, and the other of the two narrow faces of the battery cell facing the bottom plate.
5. The power battery pack according to claim 1, wherein the cavity wall of the battery cell accommodating cavity is a battery pack shell, a heat conduction insulating layer is filled in the battery pack shell, and the battery cells are bonded with the battery pack shell through the heat conduction insulating layer.
6. The power battery pack of claim 1, wherein the thermally conductive and insulating layer is disposed on a side surface of the unit cells adjacent to the upper cover.
7. The power battery pack of claim 1, wherein a side surface of the heat-conducting plate facing away from the battery cells is provided with heat-conducting fins.
8. The power battery pack according to claim 7, wherein the heat conducting fins are multiple, and the heat conducting fins are parallel to each other and spaced apart from each other, and an air passing channel is defined between two adjacent heat conducting fins.
9. The power battery pack of any of claims 1-3 and 5-8, wherein the tray comprises a bottom plate and side frames arranged around the bottom plate, and a heat conducting and insulating layer is arranged between the single batteries and the bottom plate.
10. The power battery pack of claim 9, wherein the thermally conductive and insulating layer is disposed on a side surface of the unit battery adjacent to the bottom plate.
11. The power battery pack of claim 9, wherein the top cover and the bottom plate are both made of an aluminum alloy material.
12. The power battery pack of any one of claims 1-8, wherein the tray is connected to the upper cover by a threaded connection, or the tray is connected to the upper cover by an adhesive, or the tray is connected to the upper cover by a threaded connection and an adhesive.
13. The power battery pack of any of claims 1-8, wherein the thermally conductive, electrically insulating layer is thermally conductive silicone.
14. A vehicle characterized by having a power battery pack according to any one of claims 1-13.
15. The vehicle of claim 14, characterized in that at least a portion of a surface of the power battery pack is exposed on an exterior of the vehicle.
16. The vehicle of claim 15, wherein the vehicle chassis has a U-shaped fixing plate with open front and rear ends, the power battery pack is mounted to the fixing plate, and an upper surface of the power battery pack is spaced from an upper fixing surface to form a ventilation duct.
CN202021143842.XU 2019-06-21 2020-06-18 Power battery package and vehicle Active CN213026305U (en)

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CN2019105449876 2019-06-21
CN201910544987.6A CN110190228A (en) 2019-06-21 2019-06-21 Power battery pack and vehicle

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CN213026305U true CN213026305U (en) 2021-04-20

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CN112290116B (en) * 2020-10-14 2021-08-31 傲普(上海)新能源有限公司 Heat radiation structure of energy storage battery box
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