CN113540618B - Electric automobile power distribution system with stable working condition - Google Patents
Electric automobile power distribution system with stable working condition Download PDFInfo
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- CN113540618B CN113540618B CN202110803922.6A CN202110803922A CN113540618B CN 113540618 B CN113540618 B CN 113540618B CN 202110803922 A CN202110803922 A CN 202110803922A CN 113540618 B CN113540618 B CN 113540618B
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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
- H01M10/61—Types of temperature control
- H01M10/617—Types of temperature control for achieving uniformity or desired distribution of temperature
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
- H01M10/643—Cylindrical cells
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
- H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- 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
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
- H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
- H01M50/213—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
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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
- 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
- H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
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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
- 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
- H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
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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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Aviation & Aerospace Engineering (AREA)
- Secondary Cells (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention relates to the technical field of electric vehicles. The electric automobile power distribution system comprises a battery mounting rack and a plurality of battery units arranged on the battery mounting rack in a matrix shape; the installation barrel comprises an inner contact film and an outer contact film, the inner surface of the unit frame corresponding to the installation barrel is provided with a connecting edge, and the upper end and the lower end of the outer contact film are adhered to the connecting edge and form sealing fit with the connecting edge; the inner contact membrane comprises two positioning rings matched with the outer diameters of the upper end and the lower end of the battery unit, and an inner thin film sheet and an outer thin film sheet which are arranged between the positioning rings. The invention can automatically balance the heat dissipation efficiency of the front section and the rear section of the cooling channel, reduce the difference of the heat dissipation effect of each battery unit, ensure that the temperature of all the battery units tends to be consistent, has simple structure and does not need to add various complex temperature control systems.
Description
Technical Field
The invention relates to the technical field of electric vehicles, in particular to an electric vehicle power distribution system with stable working conditions.
Background
The power distribution system (namely, the battery system in a narrow sense) is a core functional component of an electric vehicle, and the quality of the use effect of the power distribution system is directly related to the end use experience of the electric vehicle. As is well known, batteries of electric vehicles emit a large amount of heat during charging and discharging processes, and in order to maintain the stability of power supply of a power distribution system, the power distribution system needs to be cooled during driving or charging to ensure the thermal stability of the power distribution system. At present, the mainstream heat dissipation mode in the market comprises air cooling heat dissipation and liquid cooling heat dissipation, and the air cooling heat dissipation mode has the defects of poor air-borne heat capacity, low heat dissipation speed, low temperature control response speed and the like, so the liquid cooling heat dissipation becomes an important research and development direction in recent years.
Liquid cooling heat dissipation is exactly through the coolant liquid absorption battery heat as its name suggests, recycles the heat transfer of circulation system with the coolant liquid to external mode, and the liquid cooling runner structure of present mainstream includes two kinds: 1. the return type flow channel is arranged in a roundabout way, so that the flow channel sequentially passes through each battery unit to exchange heat with the battery units, and the return type flow channel has the advantages of convenience in layout and compact structure; 2. the multi-branch convection type flow channel is characterized in that heat exchange is carried out between the multi-branch convection type flow channel and the battery units by utilizing the plurality of branches to pass through the corresponding plurality of battery units respectively, so that the heat dissipation efficiency is higher;
however, when the two flow channels are adopted for liquid cooling heat dissipation, a problem exists, the temperature of the cooling liquid is inevitably higher and higher along with the continuation of the heat dissipation stroke, that is, the temperature difference of the cooling liquid at the front section and the rear section is larger, so that the heat dissipation of the corresponding battery units is unbalanced, and further the temperature of each battery unit is different, which affects the overall application of the power distribution system. Of course, it would be theoretically possible to provide each battery unit with a separate heat dissipation branch or with a separate semiconductor heat sink. However, in reality, the number of battery units corresponding to one power distribution system is very large, and is dozens or hundreds, and is hundreds or thousands. Obviously, it is not practical to provide an independent heat dissipation control component for each battery unit.
Therefore, how to implement the heat dissipation balance control on the battery units corresponding to the front section and the rear section of the flow channel in a simple manner is a technical problem to be solved urgently in the field.
Disclosure of Invention
The invention aims to provide a stable working condition electric automobile power distribution system capable of carrying out self-adaptive temperature balance.
In order to achieve the purpose of the invention, the technical scheme adopted by the invention is as follows: an electric automobile power distribution system with stable working conditions comprises a battery mounting rack and a plurality of battery units arranged on the battery mounting rack in a matrix shape;
the battery mounting rack comprises a plurality of vertically arranged, flat and rectangular hollow unit racks which are arranged side by side, connecting ports are arranged at two ends of each unit rack, and the connecting ports of the unit racks are communicated through elbows, so that a circuitous cooling channel is formed in the whole battery mounting rack; a plurality of vertical installation cylinders are arranged on each unit frame along the length direction of the unit frame, the installation cylinders penetrate through the upper surface and the lower surface of the unit frame, and the battery units are arranged in the installation cylinders;
the installation cylinder comprises an inner contact film and an outer contact film, the inner surface of the unit frame corresponding to the installation cylinder is provided with a connecting edge, and the upper end and the lower end of the outer contact film are adhered to the connecting edge and form sealing fit with the connecting edge; the inner contact membrane comprises two positioning rings matched with the outer diameters of the upper end and the lower end of the battery unit, and an inner thin film sheet and an outer thin film sheet which are arranged between the positioning rings; the edge of the bottom of the positioning ring positioned above and the edge of the top of the positioning ring positioned below are both provided with a connecting groove, and the upper end and the lower end of the thin film sheet are clamped in the connecting grooves; and the surface of the outer end of the positioning ring is also provided with air holes, and the air holes are communicated with the connecting grooves.
Preferably, the surface of the thin film sheet is further provided with transverse and convex micro-ridges.
Preferably, the outer surface of the unit frame opposite to the installation cylinder is provided with a positioning table, and the cross section of the positioning ring is L-shaped and leans against the positioning table.
Preferably, the thin film sheets of the outer contact film and the inner contact film are both made of heat-conducting silica gel.
Preferably, a plurality of connecting ports are arranged at the upper and lower ends of each unit frame, and each connecting port is correspondingly provided with an elbow.
Preferably, the connection port is a pipe with a hemispherical top.
Preferably, the unit frames are connected through bolts.
Preferably, the unit frames are adhered to each other by heat-resistant glue.
Preferably, the cell frames are tightly bound through stainless steel bands, and the stainless steel bands are bound along the length direction of the battery mounting frame.
Preferably, a transverse partition plate is arranged in the unit frame, and the partition plate divides the number of the corresponding connecting ports of the cooling channel into an upper layer and a lower layer; the flow directions of the cooling liquid in the two adjacent layers of cooling channels are opposite.
The beneficial effects of the invention are concentrated and expressed as follows: the cooling channel structure has the advantages that the cooling efficiency of the front section and the rear section of the cooling channel can be automatically balanced, the difference of the heat dissipation effect of each battery unit is reduced, the temperature of all the battery units tends to be consistent, the structure is simple, and various complex temperature control systems are not required to be added. Specifically, when the cooling fluid flows in the cooling channel during use, the heat emitted by the battery unit can be transferred to the cooling fluid through the inner contact film and the outer contact film, and the heat is taken away by the cooling fluid. Since the inner contact film of the present invention includes a multi-layered thin film sheet, temperature is transmitted through the multi-layered thin film sheet. In the front section of the cooling channel: the cooling liquid absorbs less heat, the heat absorption effect is strong, the temperature of the cooling liquid and the temperature of the battery are both in a lower level, certain micro gaps are formed among the multiple layers of thin film sheets and between the outer contact film and the inner contact film, and the existence of the micro gaps essentially reduces the direct contact area among the thin film sheets and between the inner contact film and the outer contact film to a certain degree, namely the heat conduction area for directly transferring heat; and it is possible to prevent the temperature of the battery cells in the front section of the cooling channel from being lowered to an excessively high level. And in the rear section of the cooling channel: along with the increase of heat absorbed by the cooling liquid, the heat absorption effect of the cooling liquid is gradually weakened, the temperatures of the cooling liquid and the battery are increased and are influenced by the battery unit, the thin film sheets, the outer contact film and the cooling liquid, the micro gaps between the inner contact film and the outer contact film and between the thin film sheets of the inner contact film are reduced under the extrusion effect, so that the direct contact area between the inner contact film and the outer contact film and between the thin film sheets of the inner contact film is increased, namely the heat conduction area is increased; and then the battery unit at the rear section of the cooling channel can also dissipate heat relatively quickly. This effect is gradually apparent as the temperature of the coolant rises. Therefore, the invention can automatically balance the heat dissipation effect of the front section and the rear section of the cooling channel through the simple structure, and relieve the problem of uneven heat dissipation of the battery units.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a view taken along line A-A of FIG. 2;
FIG. 4 is a schematic view showing the structure of one unit shelf of FIG. 3;
FIG. 5 is an enlarged view of portion B of FIG. 4;
FIG. 6 is a schematic structural view of an inner contact membrane;
FIG. 7 is a schematic view of a connecting slot;
fig. 8 is a schematic structural view of a micro ridge.
Detailed Description
As shown in fig. 1 to 8, an electric vehicle power distribution system with stable working conditions includes a battery mounting rack 0 and a plurality of battery units 1 arranged on the battery mounting rack 0 in a matrix shape. The battery mounting bracket 0 is used as a mounting base for mounting the battery unit 1 of the electric vehicle, and the battery mounting bracket 0 is usually mounted on a chassis of the vehicle through a connecting bracket, and the specific mounting manner of the battery mounting bracket 0 can refer to various existing designs.
Compared with the air-cooled battery mounting rack, the battery mounting rack 0 comprises a plurality of vertically arranged, flat and rectangular hollow unit racks 2 which are arranged side by side, wherein the unit racks 2 are usually made of high-temperature-resistant plastic or ceramic raw materials, and have the characteristics of light weight, high strength, convenience in processing and the like. The cavity inside the unit frame 2 serves as a flow path for the coolant, and as shown in fig. 1 and 2, connection ports 3 are provided at both ends of the unit frame 2, and the connection ports 3 may be circular, square, or the like, but it is needless to say that the connection ports 3 may be dome-shaped pipes in order to further enhance the strength of the connection ports 3. The connection ports 3 of the unit frames 2 communicate with each other through the elbows 4 so that a circuitous cooling passage is formed throughout the battery mount frame 0. One end of the unit frame 2 can be provided with 1 connecting port 3, and one connecting port 3 is correspondingly provided with an elbow 4. Of course, in order to improve the uniformity of flowing and distribution of the cooling liquid in the inner cavity of the unit 1 and reduce the flowing dead angle, it is better to arrange a plurality of connecting ports 3 up and down at two ends of the unit frame 2, and each connecting port 3 is correspondingly provided with an elbow 4. As shown in fig. 1, each of the two ends of each unit shelf 2 is provided with 3 connection ports 3. In fact, the number of the connection ports 3 may be appropriately increased or decreased according to the height of the unit frame 2.
Regarding the connection problem between the unit frames 2, it is preferable that each unit frame 2 is independently manufactured and flexibly assembled according to the total number of the battery cells 1 when used. For this purpose, a combined structure is adopted between the unit frames 2, and in this case, the unit frames 2 may be connected by bolts. Or may be adhered to each other by a heat-resistant adhesive, and in order to secure the structural stability of the whole, as shown in fig. 2, the unit frames 2 are bound by a stainless steel band 14, and the stainless steel band 14 is bound along the length direction of the battery mounting bracket 0.
Regarding the mounting structure problem of the battery unit 1 on the battery mounting rack 0, a plurality of vertical mounting cylinders are arranged on each unit rack 2 along the length direction of the unit rack 2, the mounting cylinders penetrate through the upper surface and the lower surface of the unit rack 2, and the battery unit 1 is arranged in the mounting cylinders. Taking the example shown in fig. 2, the present invention includes 75 battery units 1 in total, and includes 15 unit frames 2, and 5 mounting cylinders may be provided on each unit frame 2, so that 75 mounting cylinders are formed in total. From the use, the upper and lower both ends of battery unit 1 can be connected with the busbar, and the busbar can be as the spacing support of battery unit 1 upper and lower direction, and a plurality of battery units 1 form multiple modes such as series connection, parallelly connected, series-parallel connection through the reasonable arrangement of busbar for electric automobile normal power supply. The heat generated in the charging and discharging process is exchanged with the cooling liquid at the mounting cylinder to take away the heat.
If the cooling channel is used alone, the temperature of the cooling liquid is higher and higher along with the increase of the heat absorption of the cooling liquid in the flowing process, and under the same other conditions, the heat dissipation degree of the battery unit 1 at the rear section of the cooling channel is different from the heat dissipation degree of the battery unit 1 at the front section of the cooling channel. Therefore, the heat dissipation rate areas of the front section and the rear section of the cooling channel are consistent by changing the heat conduction areas of the front section and the rear section of the cooling channel, and the heat imbalance is reduced. The invention specifically adopts a mode that the mounting cylinder is originally innovated and designed, the heat conduction mode through one layer of cylinder wall under the traditional thought is changed, but a multi-layer film type design is adopted, the micro-gap between the multi-layer heat exchange films is changed by utilizing the expansion with heat and the contraction with cold, the heat conduction area is further changed, and finally the front section and the rear section of the cooling channel are closer to the heat balance.
In particular, as shown in fig. 2-4, the mounting cartridge includes an inner contact membrane 5 and an outer contact membrane 6. Interior contact membrane 5 is used for the lateral wall direct contact with battery unit 1, and outer contact membrane 6 is used for with coolant liquid direct contact, in order to ensure its good performance of heat conduction, guarantees its elastic deformation margin who receives the thermal barrier and contract with cold, interior contact membrane 5 and outer adoption heat conduction silica gel of contacting membrane 6 are made, when contact membrane 5 heat exchange surface mainly comprises film piece 9 including, that is also film piece 9 adopts heat conduction silica gel to make promptly. As the unit frame 2 needs to flow the cooling liquid, in order to ensure the sealing between the unit frame and the external contact film 6, as shown in fig. 5, the inner surface of the unit frame 2 corresponding to the installation cylinder is provided with a connecting edge 7, and after the thickness of the connecting edge 7 is not easy to pass, one surface of the connecting edge directly leaves an overlarge gap between the internal contact film and the external contact film, so that the internal contact film and the external contact film are not in direct contact; the upper end and the lower end of the outer contact film 6 are adhered to the connecting edge 7 and are in sealing fit with the connecting edge 7. Of course, since the temperature of the use environment is relatively high, in order to prevent the adhesion failure between the outer contact film 6 and the connecting edge 7, a high temperature resistant adhesive should be used.
As for the specific structure of the inner contact film 5, as shown in fig. 6, the inner contact film 5 includes two positioning rings 8 fitted to the outer diameters of the upper and lower ends of the battery cell 1, and inner and outer multi-layered thin film sheets 9 disposed between the positioning rings 8. The number of the common film sheets 9 is about 3-5 layers, and the thickness of a single layer is about 0.1-0.2 mm. The edge of the bottom of the positioning ring 8 positioned above and the edge of the top of the positioning ring 8 positioned below are both provided with a connecting groove 10, and the upper end and the lower end of the thin film sheet 9 are clamped in the connecting groove 10. The surface of the outer end of the positioning ring 8 is also provided with an air vent 11, the air vent 11 is communicated with a connecting groove 10, the air vent 11 is used as an air outlet of a tiny gap between the thin film sheets 9, the air vent has a breathing effect, and when the temperature rises and expands due to heating, the tiny gap between the thin film sheets 9 is reduced, so that air is exhausted; a more intimate contact is formed with better thermal conductivity. On the contrary, the minute gaps are increased, and have relatively low thermal conductivity.
In the present invention, when the cooling fluid flows in the cooling channel during use, the heat emitted from the battery cell 1 can be transferred to the cooling fluid through the inner contact film 5 and the outer contact film 6, and the heat is taken away by the cooling fluid. Since the inner contact membrane 5 of the present invention comprises a multi-layer thin membrane sheet 9, the temperature is transferred through the multi-layer thin membrane sheet 9. In the front section of the cooling channel: the cooling liquid absorbs less heat, the heat absorption effect is strong, the temperature of the cooling liquid and the temperature of the battery are both in a lower level, certain micro gaps are formed among the multiple layers of thin film sheets 9 and between the outer contact film 6 and the inner contact film 5, and the existence of the micro gaps substantially reduces the direct contact area among the thin film sheets 9 and between the inner contact film and the outer contact film to a certain degree, namely the heat conduction area for directly transferring heat; and thus, the temperature of the battery cells at the front section of the cooling channel can be prevented from being lowered to an excessively high level. And in the rear section of the cooling channel: along with the increase of heat absorbed by the cooling liquid, the heat absorption effect of the cooling liquid is gradually weakened, the temperatures of the cooling liquid and the battery are increased at the moment and are influenced by the battery unit 1, the thin film sheets 9, the outer contact film 6 and the cooling liquid, and the micro gaps between the inner contact film and the outer contact film and between the thin film sheets 9 of the inner contact film 6 are reduced under the extrusion action, so that the direct contact area between the inner contact film and the outer contact film and between the thin film sheets 9 of the inner contact film is increased, namely the heat conduction area is increased; so that the battery unit 1 at the rear section of the cooling channel can also dissipate heat relatively quickly. This effect is gradually evident as the temperature of the coolant rises. Therefore, the invention can automatically balance the heat dissipation effect of the front section and the rear section of the cooling channel through the simple structure, and the problem of uneven heat dissipation of the battery units is relieved.
In order to ensure that the membrane 9 has a respiratory action that meets the requirements and to ensure the stability of the micro-gaps, the surface of the membrane 9 is also provided with transverse, protruding micro-ridges 12. On the basis, in order to facilitate the installation of the whole internal contact film 5 and ensure the transverse positioning stability of the upper end and the lower end of the battery unit 1, the outer surface of the unit frame 2 opposite to the installation cylinder is provided with a positioning table 13, and the cross section of the positioning ring 8 is L-shaped and is abutted against the positioning table 13.
In addition, the present invention may also adopt a heat balance method in which a horizontal partition plate is provided inside the unit frame 2, and the partition plate divides the number of the cooling passages corresponding to the connection ports 3 into upper and lower multiple stages. For example: three partition plates can be arranged in the unit frame 2, the partition plates divide the interior of the unit frame 2 into four chambers up and down, 4 connecting ports 3 are respectively arranged at two ends of the corresponding unit frame 2, and in the formed 4 cooling channels, the flowing directions of cooling liquid in two adjacent layers of cooling channels are opposite. For example: the first layer and the third layer of cooling liquid flow from left to right, and the second layer and the fourth layer of cooling liquid flow from right to left, so that the purpose of relieving thermal unbalance is finally achieved.
Claims (9)
1. The utility model provides a stable electric automobile distribution system of operating mode which characterized in that: the battery pack comprises a battery mounting rack (0) and a plurality of battery units (1) which are arranged on the battery mounting rack (0) in a matrix shape;
the battery mounting rack (0) comprises a plurality of vertically arranged, flat and rectangular hollow unit racks (2) which are arranged side by side, connecting ports (3) are arranged at two ends of each unit rack (2), and the connecting ports (3) of the unit racks (2) are communicated through elbows (4) so as to form a circuitous cooling channel in the whole battery mounting rack (0); a plurality of vertical installation cylinders are arranged on each unit frame (2) along the length direction of the unit frame (2), the installation cylinders penetrate through the upper surface and the lower surface of the unit frame (2), and the battery units (1) are arranged in the installation cylinders;
the installation barrel comprises an inner contact film (5) and an outer contact film (6), a connecting edge (7) is arranged on the inner surface of the unit frame (2) corresponding to the installation barrel, and the upper end and the lower end of the outer contact film (6) are adhered to the connecting edge (7) and are in sealing fit with the connecting edge (7); the inner contact membrane (5) comprises two positioning rings (8) matched with the outer diameters of the upper end and the lower end of the battery unit (1), and inner and outer multilayer thin film sheets (9) arranged between the positioning rings (8); the edge of the bottom of the positioning ring (8) positioned above and the edge of the top of the positioning ring (8) positioned below are both provided with a connecting groove (10), and the upper end and the lower end of the thin film sheet (9) are clamped in the connecting groove (10); the surface of the outer end of the positioning ring (8) is also provided with air holes (11), and the air holes (11) are communicated with the connecting groove (10);
the thin film sheets (9) of the outer contact film (6) and the inner contact film (5) are both made of heat-conducting silica gel.
2. The work condition stabilized electric vehicle power distribution system of claim 1, wherein: the surface of the thin film sheet (9) is also provided with transverse and convex micro ridge lines (12).
3. The condition-stabilized electric vehicle power distribution system according to claim 2, characterized in that: and the outer surface of the unit frame (2) opposite to the mounting cylinder is provided with a positioning table (13), and the cross section of the positioning ring (8) is L-shaped and is abutted against the positioning table (13).
4. The condition-stabilized electric vehicle power distribution system according to claim 3, wherein: a plurality of connecting ports (3) are arranged at the two ends of the unit frame (2) from top to bottom, and each connecting port (3) is correspondingly provided with an elbow (4).
5. The condition-stabilized electric vehicle power distribution system of claim 4, wherein: the connecting port (3) is a pipe with a round top and a square bottom.
6. The condition-stabilized electric vehicle power distribution system according to claim 5, wherein: the unit frames (2) are connected through bolts.
7. The condition-stabilized electric vehicle power distribution system according to claim 6, wherein: the unit frames (2) are mutually bonded through heat-resistant glue.
8. The operating condition-stabilized electric vehicle power distribution system of claim 7, wherein: the unit frames (2) are tightly bound through stainless steel bands (14), and the stainless steel bands (14) are bound along the length direction of the battery mounting frame (0).
9. The condition-stabilized electric vehicle power distribution system of claim 8, wherein: the unit frame (2) is internally provided with transverse clapboards which divide the number of the corresponding connecting ports (3) of the cooling channel into an upper layer and a lower layer; the flow directions of the cooling liquid in the two adjacent layers of cooling channels are opposite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110803922.6A CN113540618B (en) | 2021-07-16 | 2021-07-16 | Electric automobile power distribution system with stable working condition |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110803922.6A CN113540618B (en) | 2021-07-16 | 2021-07-16 | Electric automobile power distribution system with stable working condition |
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| CN113540618A CN113540618A (en) | 2021-10-22 |
| CN113540618B true CN113540618B (en) | 2022-07-22 |
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Citations (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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