CN112117508B - Power battery pack and vehicle with same - Google Patents
Power battery pack and vehicle with same Download PDFInfo
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- CN112117508B CN112117508B CN201910544126.8A CN201910544126A CN112117508B CN 112117508 B CN112117508 B CN 112117508B CN 201910544126 A CN201910544126 A CN 201910544126A CN 112117508 B CN112117508 B CN 112117508B
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- heat exchange
- battery pack
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- exchange cavity
- heat
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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
- H01M10/65—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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- 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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- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention discloses a power battery pack and a vehicle with the same, wherein the power battery pack comprises: the battery pack comprises a first layer of single battery pack and a second layer of single battery pack, wherein the second layer of single battery pack and the first layer of single battery pack are stacked; the heat management assembly is arranged between the first layer of single battery pack and the second layer of single battery pack and is provided with a first heat exchange cavity close to the first layer of single battery pack and a second heat exchange cavity close to the second layer of single battery pack, and the first heat exchange cavity is communicated with the second heat exchange cavity. According to the power battery pack, the heat management assembly is arranged between the first layer of single battery pack and the second layer of single battery pack and provided with the first heat exchange cavity and the second heat exchange cavity, so that the heat management assembly can exchange heat for the first layer of single battery pack and the second layer of single battery pack at the same time, and the heat management assembly is simple and compact in structure, so that the heat management assembly is convenient to arrange in the battery pack.
Description
Technical Field
The invention belongs to the technical field of vehicle manufacturing, and particularly relates to a power battery pack and a vehicle with the same.
Background
In the related art, a single thermal management system is adopted for the thermal management system of the power battery to dissipate heat of a single-layer battery pack, when the power battery is arranged into an upper layer and a lower layer, the thermal management system needs to be arranged on each layer of battery pack, the structure is complex, the design and process difficulty is high, the occupied space is large, and the requirement for compacting the battery pack of the vehicle is not met.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention aims to provide a power battery pack which is compact in space and simple in structure.
The power battery pack according to the embodiment of the invention comprises: the battery pack comprises a first layer of single battery pack and a second layer of single battery pack, wherein the second layer of single battery pack and the first layer of single battery pack are stacked up and down; the heat management assembly is arranged between the first layer of single battery pack and the second layer of single battery pack and is provided with a first heat exchange cavity close to the first layer of single battery pack and a second heat exchange cavity close to the second layer of single battery pack, and the first heat exchange cavity is communicated with the second heat exchange cavity.
According to the power battery pack, the heat management assembly is arranged between the first layer of single battery pack and the second layer of single battery pack and provided with the first heat exchange cavity and the second heat exchange cavity, so that the heat management assembly can exchange heat for the first layer of single battery pack and the second layer of single battery pack at the same time, and the heat management assembly is simple and compact in structure, so that the heat management assembly is convenient to arrange in the battery pack.
According to the power battery pack, the heat management assembly is provided with the middle partition plate, and the first heat exchange cavity and the second heat exchange cavity are respectively located on two sides of the middle partition plate.
According to the power battery pack provided by the embodiment of the invention, the heat management assembly comprises a hollow shell, the middle partition plate is arranged in the shell, and the hollow cavity of the shell is divided into the first heat exchange cavity and the second heat exchange cavity.
According to the power battery pack provided by the embodiment of the invention, the first heat exchange cavity is communicated with the second heat exchange cavity, one end of the middle partition plate is spaced from the inner wall of the shell to form a notch, and the first heat exchange cavity is communicated with the second heat exchange cavity through the notch.
According to the power battery pack provided by the embodiment of the invention, the first heat exchange cavity comprises at least two separated first sub heat exchange cavities, the second heat exchange cavity comprises a plurality of separated second sub heat exchange cavities, two adjacent second sub heat exchange cavities are communicated, the two outermost second sub heat exchange cavities are communicated with the two first sub heat exchange cavities through the notch, the heat management assembly is provided with a water inlet and a water outlet which are respectively connected with the two first sub heat exchange cavities, and the water inlet and the water outlet are arranged at one end of the heat management assembly, which is far away from the notch. (supplement the related drawings)
According to the power battery pack provided by the embodiment of the invention, the first heat exchange cavity and the second heat exchange cavity are internally provided with the turbulent flow structures.
According to the power battery pack provided by the embodiment of the invention, the flow disturbing structure comprises a plurality of flow disturbing columns.
According to the power battery pack provided by the embodiment of the invention, a plurality of turbulence columns distributed at intervals are respectively arranged in the first heat exchange cavity and the second heat exchange cavity.
The power battery pack according to one embodiment of the invention further comprises: the tray comprises a bottom plate and a side frame; the upper cover and the bottom plate are respectively connected with the upper end and the lower end of the side frame to limit a battery accommodating cavity; the first layer of single battery pack and the second layer of single battery pack both comprise a plurality of single batteries which are arranged in the battery accommodating cavity,
according to the power battery pack provided by the embodiment of the invention, the heat conduction insulating layer is arranged between the single batteries and the upper cover.
According to the power battery pack provided by the embodiment of the invention, the heat conduction insulating layer is arranged between the single batteries and the bottom plate.
According to the power battery pack provided by the embodiment of the invention, the upper cover and the bottom plate are both made of aluminum alloy materials;
the invention also provides a vehicle which is provided with the power battery pack according to any one embodiment of the invention.
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 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 a power cell pack according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a thermal management assembly according to one embodiment of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
fig. 4 and 5 are schematic structural views of a first layer cell-battery or a second layer cell-battery according to an embodiment of the present invention;
FIG. 6 is a schematic structural view of a thermal management assembly according to an embodiment of the present invention (with a portion of the housing of the second heat exchange chamber omitted);
FIG. 7 is a cross-sectional view at A-A of FIG. 6;
FIG. 8 is an enlarged view of a portion of FIG. 7 at B;
fig. 9 is a schematic structural diagram of a vehicle according to an embodiment of the invention.
Reference numerals:
a vehicle 1000;
a power battery pack 100;
a single battery 10;
a first layer of cell groups 1;
a second layer of cell groups 2;
a thermal management component 3; a first heat exchange chamber 31; the first sub heat exchange chamber 311; a second heat exchange chamber 32; the second sub heat exchange chamber 321; a housing 33; a middle partition plate 34; a turbulence column 35; a water inlet 36; a water outlet 37; a notch 38;
a tray 41; an upper cover 42; an end plate 43;
a thermally conductive and insulating layer 5.
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 accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
A power battery pack 100 according to an embodiment of the present invention is described below with reference to fig. 1 to 9.
The power battery pack 100 according to the embodiment of the present invention includes: the battery pack comprises a first layer of single battery pack 1 and a second layer of single battery pack 2, wherein the second layer of single battery pack 2 and the first layer of single battery pack 1 are arranged in an up-down stacked mode; the heat management assembly 3 is arranged between the first layer of single battery pack 1 and the second layer of single battery pack 2, the heat management assembly 3 is provided with a first heat exchange cavity 31 close to the first layer of single battery pack 1 and a second heat exchange cavity 32 close to the second layer of single battery pack 2, and the first heat exchange cavity 31 is communicated with the second heat exchange cavity 32.
For example, as shown in fig. 1, a first layer of cell stack 1 is disposed below the thermal management assembly 3, and a second layer of cell stack 2 is disposed above the thermal management assembly 3.
Therefore, when the battery works, a heat exchange medium in the heat management assembly 3 can circulate in the first heat exchange cavity 31 and the second heat exchange cavity 32, the first heat exchange cavity 31 can exchange heat for the first layer of single battery pack 1 close to the first heat exchange cavity, the second heat exchange cavity 32 can exchange heat for the second layer of single battery pack 2 close to the second heat exchange cavity, the first heat exchange cavity 31 and the second heat exchange cavity 32 of the heat management assembly 3 are integrated between the first single battery pack and the second battery pack, the structure of the heat management assembly 3 can be more compact, and the arrangement of the heat management assembly 3 in the power battery pack 100 is facilitated.
According to the power battery pack 100 provided by the invention, the heat management assembly 3 is arranged between the first layer of single battery pack 1 and the second layer of single battery pack 2, and the heat management assembly 3 is provided with the first heat exchange cavity 31 and the second heat exchange cavity 32, so that the heat management assembly 3 can exchange heat for the first layer of single battery pack 1 and the second layer of single battery pack at the same time, and the heat management assembly 3 is simple and compact in structure, thereby facilitating the arrangement of the heat management assembly 3 in the battery pack.
Some embodiments of a power battery pack 100 according to the present invention are described below with reference to fig. 1-9.
As shown in fig. 3, according to the power battery pack 100 of one embodiment of the present invention, the heat management assembly 3 has the middle partition plate 34, and the first heat exchange cavity 31 and the second heat exchange cavity 32 are respectively located at two sides of the middle partition plate 34, so that the first heat exchange cavity 31 and the second heat exchange cavity 32 are separated by the middle partition plate 34, and the middle partition plate 34 is simple in structure and convenient to arrange.
As shown in fig. 3, according to the power battery pack 100 of one embodiment of the present invention, the thermal management assembly 3 includes a hollow casing 33, the middle partition 34 is disposed in the casing 33, and the hollow cavity of the casing 33 is divided into the first heat exchange cavity 31 and the second heat exchange cavity 32.
A heat exchange cavity for circulating a heat dissipation medium is formed in the casing 33, and a middle partition plate 34 is arranged in the casing 33 to form a first heat exchange cavity 31 and a second heat exchange cavity 32, so that the heat exchange medium can flow in the first heat exchange cavity 31 and the second heat exchange cavity 32, thereby facilitating heat exchange between the first layer of the cell group 1 and the second layer of the cell group 2.
As shown in fig. 6-8, according to the power battery pack 100 of an embodiment of the present invention, the first heat exchange cavity 31 is communicated with the second heat exchange cavity 32, for example, the first heat exchange cavity 31 and the second heat exchange cavity 32 may be connected in series, one end of the middle partition plate 34 is spaced apart from the inner wall of the housing 33 to form the gap 38, the first heat exchange cavity 31 is communicated with the second heat exchange cavity 32 through the gap 38, and the first heat exchange cavity 31 is connected in series with the second heat exchange cavity 32, so that the first heat exchange cavity 31 is communicated with the second heat exchange cavity 32, for example, a heat exchange medium may flow into the first heat exchange cavity 31 from an inlet of the first heat exchange cavity 31, flow into the second heat exchange cavity 32 at the gap 38, and flow out from the second heat exchange cavity 32, so that the heat exchange medium may flow through the first heat exchange cavity 31 and the second heat exchange cavity 32 to exchange heat between the first layer of unit cells and the second layer of unit cells.
According to the power battery pack 100 of one embodiment of the present invention, as shown in fig. 6-8, the first heat exchange cavity 31 includes at least two partitioned first sub-heat exchange cavities 311, the second heat exchange cavity 32 includes a plurality of partitioned second sub-heat exchange cavities 321, adjacent two second sub-heat exchange cavities 321 are communicated, and the two second sub heat exchange cavities 321 at the outermost side are communicated with the two first sub heat exchange cavities 311 through the notches 38, the heat management assembly 3 has a water inlet 36 and a water outlet 37 respectively connected with the two first sub heat exchange cavities 311, the water inlet 36 and the water outlet 37 are arranged at one end of the heat management assembly 3 away from the notches 38, namely, one of the first sub heat exchange cavities 311 is provided with a water inlet 36, the water inlet 36 is arranged at one end of the first sub heat exchange cavity 311 departing from the gap 38, the other heat exchange cavity is provided with a water outlet 37, and a water outlet 37 is arranged at an end of the first sub heat exchange cavity 311 facing away from the gap 38.
For example, as shown in fig. 6, the first sub heat exchange cavity 311 on the first side is connected to the water inlet 36, the first sub heat exchange cavity 311 on the second side is connected to the water outlet 37, the first sub heat exchange cavity 311 on the first side is connected to the second sub heat exchange cavity 321 on the first side, and the first sub heat exchange cavity 311 on the second side is connected to the second sub heat exchange cavity 321 on the first side.
Thereby, the heat exchange medium can flow from the water inlet 36 into the first sub heat exchange cavity 311 connected with the water inlet 36 and flow into the second sub heat exchange cavity 321 on the first side through the notch 38, and the heat exchange medium sequentially flows from the first sub heat exchange cavity to the second sub heat exchange cavity 321 on the first side through the notch 38 and flows from the second sub heat exchange cavity 321 on the second side into the first sub heat exchange cavity 311 connected with the water outlet 37 through the notch 38 and flows out from the water outlet 37, thereby completing the circulation of the cooling medium in the first heat exchange cavity 31 and the second heat exchange cavity 32.
Through the arrangement of the first sub-heat exchange cavity 311 and the second sub-heat exchange cavity 321, the heat exchange medium can circulate in the first sub-heat exchange cavity 311 and the second sub-heat exchange cavity 321 through only one water inlet 36 and one first water outlet 37, so that the circulation of the cooling medium is realized, and further the heat exchange of the first layer of single battery pack 1 and the second layer of single battery pack 2 can be realized.
According to the power battery pack 100 of one embodiment of the invention, the first heat exchange cavity 31 and the second heat exchange cavity 32 are both provided with the turbulent flow structures, and the turbulent flow structures are arranged to enable the cooling medium to fully exchange heat with the first layer of single battery pack 1 and the second layer of single battery pack 2 in the first heat exchange cavity 31 and the second heat exchange cavity 32, so that the heat exchange efficiency of the power battery pack 100 can be enhanced.
As shown in fig. 3, according to the power battery pack 100 of an embodiment of the present invention, the turbulence structure includes a plurality of turbulence columns 35, in some examples, a plurality of turbulence columns 35 are respectively disposed in the first heat exchange cavity 31 and the second heat exchange cavity 32, the arrangement of the plurality of turbulence columns 35 can improve a turbulence effect, and the turbulence columns 35 can extend along a spacing direction of the first heat exchange cavity 31 and the second heat exchange cavity 32, the structure of the turbulence columns 35 is simple, the arrangement is convenient, and a good turbulence effect can be achieved, so that the manufacturing cost of the power battery pack 100 can be reduced, and the heat exchange efficiency of the power battery pack 100 can be improved.
The power battery pack 100 according to an embodiment of the present invention further includes: the battery pack shell is made of a metal material; the first layer of single battery pack 1 and the second layer of single battery pack 2 both comprise a plurality of single batteries, each single battery is provided with a battery shell, a battery cell arranged in the battery shell and an outgoing terminal which is connected with the battery cell and extends out of the battery shell, and the single batteries are arranged in the battery pack shell; in battery package shell was all located to first layer battery cell group 1 and second floor battery cell group 2, and battery package shell intussuseption is filled with the heat conduction insulation layer of parcel first layer battery cell group 1 and second floor battery cell group 2. According to the power battery pack 100, a first layer of single battery pack 1 comprises a plurality of single batteries, a second layer of single battery pack 2 comprises a plurality of single batteries, the single batteries of the first layer of single battery pack 1 can be laid on one side of a battery pack shell, the single batteries of the second layer of single battery pack 2 can be laid on the other side of the battery pack shell, a heat management assembly 3 is arranged between the first layer of single battery pack and the second layer of single battery pack, and the spacing direction of a first heat exchange cavity 31 and a second heat exchange cavity 32 is the same as the spacing direction of the first layer of single battery pack 1 and the second layer of single battery pack 2.
From this, thermal insulation layer can derive the heat of a plurality of battery cells of a plurality of first layer battery cell groups 1 or second floor battery cell group 2 to thermal management subassembly 3 department, and carry out the heat transfer with thermal management subassembly 3, thereby realize the heat transfer to power battery package 100, and thermal insulation layer parcel first layer battery cell group 1 and second floor battery cell group 2, can transmit everywhere heat (for example the battery cell of first layer battery cell group 1 or the battery cell of second floor battery cell group 2 and the heat on the surface that thermal insulation layer contacted) of first layer battery cell group 1 and second floor battery cell group 2 for thermal insulation layer, and transmit thermal management subassembly 3 from thermal insulation layer, thereby improve the heat exchange efficiency of power battery package 100.
The power battery package 100 that an embodiment of this application provided, wherein a plurality of battery cell direct mount have reduced the use of module frame in the battery package shell, therefore the installation space utilization in the battery package shell improves, and the battery cell quantity of installation increases in the battery package shell, has improved power battery package 100's battery capacity, has improved the duration, and has reduced component quantity and equipment process, the cost is reduced.
In some embodiments, as shown in fig. 4 and 5, each of the first layer of cell stack 11 and the second layer of cell stack 22 includes a plurality of cells 10, and the power battery pack 100 further includes: a tray 41 and an upper cover 42, wherein the tray 41 comprises a bottom plate and a side frame; the upper cover 42 and the bottom plate are respectively connected with the upper end and the lower end of the side frame to limit a battery accommodating cavity, the first layer of single battery pack 1 and the second layer of single battery pack 2 both comprise a plurality of single batteries 10, and the single batteries 10 are installed in the battery accommodating cavity in the battery pack shell.
For example, a part (a plurality of) of the unit batteries 10 of the power battery pack 100 is installed in the battery accommodating cavity and below the heat management component 3 to form a first layer of unit battery pack 1, and another part (a plurality of) of the unit batteries 10 of the power battery pack 100 is installed in the battery accommodating cavity and above the heat management component 3 to form a second layer of unit battery pack 2.
In some examples, the tray 41 includes a side frame and a bottom plate, and 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 5 may be disposed between the unit batteries 10 and the base plate, and the heat conductive insulating layer 5 is disposed on one side surface of the unit batteries 10 near the base plate. This can increase the actual heat transfer area between the lower surface of the unit battery 10 and the bottom plate, which can also have a heat dissipation effect.
The upper cover 42 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 practical implementation, the single batteries 10 may be supported on the side frames of the tray 41, and the lower surfaces of the single batteries 10 are spaced apart from the bottom plate of the tray 41, so that the side frames with rigidity and strength far greater than that of the bottom plate may be fully utilized, and the heat conducting insulating layer 5 may be sandwiched between the single batteries 10 and the bottom plate.
In some embodiments, as shown in fig. 4 and 5, a heat conductive insulating layer 5 is disposed between the single battery 10 and the upper cover 42, and in some examples, the heat conductive insulating layer 5 is coated on one side surface of the single battery 10 close to the upper cover 42.
In some embodiments, as shown in fig. 4 and 5, a heat conductive and insulating layer 5 is disposed between the single battery 10 and the base plate, and in some examples, the heat conductive and insulating layer 5 is coated on one side surface of the single battery 10 close to the base plate.
The heat conducting insulation layer 5 may conduct heat of the plurality of unit batteries 10 to the tray 4111 and/or the upper cover 4212, and exchange heat with the heat management layer assembly, so as to achieve heat exchange of the unit batteries 10, in some examples, the heat conducting insulation layer 54 may be filled in the battery accommodating cavity, and wrap the plurality of unit batteries 10 of the first layer of unit battery pack 1 and/or wrap the plurality of unit batteries 10 of the second layer of unit battery pack 2, so that heat at various places of the unit batteries 10 (for example, heat at a surface where the unit batteries 10 contact the heat conducting insulation layer 5) may be transferred to the heat conducting insulation layer 5, and transferred from the heat conducting insulation layer 5 to the tray 4111 and/or the upper cover 4212, and finally transferred to the heat management assembly 3 for heat exchange, thereby improving heat exchange efficiency of the power battery pack 100.
For example, as shown in fig. 1, a first layer of cell group 1 is installed at the lower part of the thermal management assembly 3, and a heat conducting insulation layer 5 is coated between a plurality of cells 10 of the first layer of cell group 1 and an upper cover 42 of the first layer of cell group 1; the second layer of single battery pack 2 is arranged on the upper part of the heat management component 3, and a heat conduction insulating layer 5 is coated between a plurality of single batteries 10 of the second layer of single battery pack 2 and a bottom plate of the second layer of single battery pack 2.
Therefore, the first layer of single battery pack 1 installed below the thermal management component 3 can transmit the heat of the plurality of single batteries 10 of the first layer of single battery pack 1 to the thermal management component 3 through the upper cover 42 of the first layer of single battery pack 1 by the heat conduction insulating layer 5 coated between the plurality of single batteries 10 of the first layer of single battery pack 1 and the upper cover 42 of the first layer of single battery pack 1, and the second layer of single battery pack 2 installed above the thermal management component 3 can transmit the heat of the plurality of single batteries 10 of the second layer of single battery pack 2 to the thermal management component 3 through the bottom plate of the second layer of single battery pack 2 by the heat conduction insulating layer 5 coated between the plurality of single batteries 10 of the second layer of single battery pack 2 and the bottom plate of the second layer of single battery pack 2.
As shown in fig. 4 and 5, the unit cell 10 is a rectangular cell of 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 a plurality of unit cells 10 are arranged in the thickness D direction of the unit cells 10. In this way, a high density arrangement of the single cells 10 can be achieved within the single cell 10 receiving cavity, and each single cell 10 has a surface for heat dissipation with the upper cover 42.
As shown in fig. 4, end plates 43 may be mounted to the outer sides of the outermost two unit cells 10 in the thickness D direction of the unit cells 10, and the unit cells 10 may be connected to the tray 41 through the end plates 43.
Of course, in other embodiments, the first layer of cell group 1 and the second layer of cell group 2 may each include a plurality of battery modules, each battery module includes a plurality of cells, and each battery module is provided with a module frame, and the module frame is used for positioning the cells. As shown in fig. 9, a vehicle 1000 according to the present invention includes a power battery pack 100 according to any embodiment of the present invention.
The vehicle 1000 according to the present invention has corresponding advantages by providing the power battery pack 100 according to the embodiment of the present invention, which will not be described herein.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like 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 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 invention 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 invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A power battery pack (100), comprising:
the battery pack comprises a first layer of single battery pack (1) and a second layer of single battery pack (2), wherein the second layer of single battery pack (2) and the first layer of single battery pack (1) are stacked up and down;
the heat management assembly (3) is arranged between the first layer of single battery pack (1) and the second layer of single battery pack (2), and is provided with a first heat exchange cavity (31) close to the first layer of single battery pack (1) and a second heat exchange cavity (32) close to the second layer of single battery pack (2), and the first heat exchange cavity (31) is communicated with the second heat exchange cavity (32);
the heat management assembly (3) is provided with a middle partition plate (34), and the first heat exchange cavity (31) and the second heat exchange cavity (32) are respectively positioned on two sides of the middle partition plate (34); the heat management assembly (3) comprises a hollow shell (33), the middle partition plate (34) is arranged in the shell (33), and the hollow cavity of the shell (33) is divided into the first heat exchange cavity (31) and the second heat exchange cavity (32); the first heat exchange cavity (31) is communicated with the second heat exchange cavity (32), one end of the middle partition plate (34) is spaced from the inner wall of the shell (33) to form a gap (38), and the first heat exchange cavity (31) is communicated with the second heat exchange cavity (32) through the gap (38).
2. The power battery pack (100) according to claim 1, wherein the first heat exchange cavity (31) comprises at least two first sub-heat exchange cavities (311) which are separated, the second heat exchange cavity (32) comprises a plurality of second sub-heat exchange cavities (321) which are separated, two adjacent sub-heat exchange cavities (321) are communicated, and the two outermost sub-heat exchange cavities (321) are communicated with the two first sub-heat exchange cavities (311) through the notch (38), the heat management assembly (3) is provided with a water inlet (36) and a water outlet (37) which are respectively connected with the two first sub-heat exchange cavities (311), and the water inlet (36) and the water outlet (37) are arranged at one end of the heat management assembly (3) which is far away from the notch (38).
3. The power battery pack (100) according to claim 1, wherein a flow disturbing structure is arranged in each of the first heat exchange cavity (31) and the second heat exchange cavity (32).
4. A power pack (100) according to claim 3, wherein the flow perturbation structure comprises a plurality of flow perturbation columns (35).
5. The power battery pack (100) according to claim 4, wherein a plurality of the turbulence columns (35) are distributed at intervals in the first heat exchange cavity (31) and the second heat exchange cavity (32).
6. The power battery pack (100) according to any one of claims 1-5, further comprising:
a tray (41) and an upper cover (42), the tray (41) comprising a bottom plate and side frames; the upper cover (42) and the bottom plate are respectively connected with the upper end and the lower end of the side frame to limit a battery accommodating cavity;
first layer battery cell group (1) with second layer battery cell group (2) all include a plurality of battery cell (10), battery cell (10) install in the battery holds the intracavity.
7. The power battery pack (100) according to claim 6, wherein a heat conducting and insulating layer (5) is arranged between the single batteries (10) and the upper cover (42).
8. The power battery pack (100) according to claim 6, wherein a heat conducting and insulating layer (5) is arranged between the single batteries (10) and the bottom plate.
9. The power battery pack (100) of claim 6, wherein the upper cover (42) and the bottom plate are both made of aluminum alloy material.
10. A vehicle (1000) characterized by having a power battery pack (100) according to any one of claims 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910544126.8A CN112117508B (en) | 2019-06-21 | 2019-06-21 | Power battery pack and vehicle with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910544126.8A CN112117508B (en) | 2019-06-21 | 2019-06-21 | Power battery pack and vehicle with same |
Publications (2)
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