CN113745739B - Power supply system and new energy automobile - Google Patents
Power supply system and new energy automobile Download PDFInfo
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- CN113745739B CN113745739B CN202111302616.0A CN202111302616A CN113745739B CN 113745739 B CN113745739 B CN 113745739B CN 202111302616 A CN202111302616 A CN 202111302616A CN 113745739 B CN113745739 B CN 113745739B
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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
- 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
- H01M10/6551—Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6556—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
- H01M10/6561—Gases
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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
- H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
- H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
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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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- 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
- H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
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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
- H01M50/271—Lids or covers for the racks or secondary 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/571—Methods or arrangements for affording protection against corrosion; Selection of materials therefor
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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
- H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
- H01M50/691—Arrangements or processes for draining liquids from casings; Cleaning battery 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
Abstract
The application discloses a power supply system and a new energy automobile, which comprise a box body, an upper cover plate and a lower cover plate, wherein the box body is provided with an upper end surface and a lower end surface which are opposite, the upper cover plate is in sealing fit with the upper end surface, the lower cover plate is in sealing fit with the lower end surface, an air containing cavity is formed by downwards concave arrangement of the upper end surface, the air containing cavity is divided into a bottom inner air containing cavity and a bottom outer air containing cavity by an upper partition wall, a circuit module is arranged in the inner air containing cavity, the first partition wall is provided with a first valve component with a first threshold value and a second valve component with a second threshold value, and when the air pressure in the inner air containing cavity reaches the first threshold value, the first valve component is opened; when the air pressure in the outer volume air chamber reaches the second threshold value, the second valve member opens. The gas exchange system is formed by the content gas cavity and the external content gas cavity inside the box body, so that no exchange between the gas inside the box body and the gas outside the box body is ensured, and the sealing performance of the whole power supply system is improved.
Description
Technical Field
The invention relates to the field of new energy automobiles, in particular to a power supply system of a new energy automobile.
Background
The power supply system is an important component of the new energy automobile, and the heat dissipation and protection of the circuit module play a vital role in the stability and reliability of the whole power supply system.
The heat dissipation and protection of the circuit module usually adopt two modes of air cooling heat dissipation and liquid cooling heat dissipation. The air-cooled heat dissipation method generally adopts a fan to perform forced convection heat transfer on the heat dissipation fins, and the heat dissipation method has the defects that the heat dissipation effect on a high-power supply is poor, the heat dissipation fins are generally arranged in the heat transfer direction of a heating device, the number of the heat dissipation fins arranged on the side faces is small, and the stability of the power supply is affected. The liquid cooling radiating mode is usually arranged the water route in the device bottom that generates heat, and the form that the device heat that generates heat spreads is divided into heat-conduction and heat radiation two kinds, and at present electrical power generating system volume is more and more littleer, and the heat source is nearer apart from the distance of inner chamber wall, and the influence of heat radiation is not neglected to influence the stability of power.
In addition, the sealing performance of the power supply directly influences the stability of the power supply, and if the new energy automobile is soaked for a long time or wades into water to pass through a low-lying road section, the sealing system of the power supply has defects, so that the circuit module is directly short-circuited. The sealed two kinds of modes of monolayer sealing washer and sealed glue that adopt of power usually, the unable stable sealed environment that forms of current sealed mode, like the power during operation that the leakproofness is good, the inside temperature of power cavity risees, and the inside atmospheric pressure of cavity increases, adopts discharge valve to discharge high-pressure gas usually, but produces the negative pressure in the cavity when the temperature descends, produces great face pressure for the bulky components and parts of body to influence the leakproofness of power, and then influence the stability of power.
Therefore, there is a need for a new power supply system.
Disclosure of Invention
The present invention provides a new power supply system.
The invention provides a power supply system, which comprises a box body, an upper cover plate and a lower cover plate, wherein the box body is provided with an upper end surface and a lower end surface which are opposite, the upper cover plate is in sealing fit with the upper end surface, the lower cover plate is in sealing fit with the lower end surface, an air containing cavity is formed by downwards concave arrangement of the upper end surface, the air containing cavity is divided into a bottom-containing air containing cavity and a bottom-containing outer air containing cavity by an upper partition wall, a circuit module is arranged in the bottom-containing air containing cavity, the first partition wall is provided with a first valve component with a first threshold value and a second valve component with a second threshold value, and when the air pressure in the inner air containing cavity reaches the first threshold value, the first valve component is opened to enable the inner air containing cavity and the outer air containing cavity to be communicated; when the air pressure in the outer air cavity reaches the second threshold value, the second valve component is opened to communicate the outer air cavity with the inner air cavity.
The outer air cavity can surround the content air cavity and can completely surround the content air cavity, namely the outer air cavity can surround the content air cavity; it may also partially enclose the content air cavity. The outer air cavity is positioned outside the inner air cavity.
The volume of the outer air containing cavity is larger than that of the inner air containing cavity. The volume of the inner air containing cavity refers to the volume remaining after the circuit module is installed.
The water inlet cavity is communicated with the water inlet cavity, the water outlet cavity is communicated with the water outlet cavity, the water inlet cavity is communicated with the outer air containing cavity through a through hole which penetrates through the water inlet cavity from top to bottom, and flow guide components are arranged in the water inlet cavity and the water outlet cavity.
A plurality of first flow guide partition plates are arranged in the water inlet cavity, the first flow guide partition plates are arranged in parallel at intervals, each first flow guide partition plate is provided with a flow guide hole, the length and the height of each first flow guide partition plate are gradually reduced along the direction from inside to outside, and the aperture of each flow guide hole is gradually increased; the water outlet cavity is internally provided with a plurality of first flow guide partition plates, each first flow guide partition plate is arranged in parallel and at intervals, each first flow guide partition plate is provided with flow guide holes, the length and the height of each first flow guide partition plate are gradually reduced along the direction from inside to outside, and the aperture of each flow guide hole is gradually increased. The first baffle plates are obtuse-angled and have straight line portions parallel to the lower partition wall, and the length of the straight line portions of the first baffle plates is gradually reduced in the inside-out direction. The first diversion baffle plate is fixed with the cavity bottom of the water inlet cavity and the water outlet cavity into a whole, and the distance between the bottom end surface of the first diversion baffle plate and the cavity bottom is the height of the first diversion baffle plate. For two adjacent first flow guide partition plates, the length and the height of the first flow guide partition plate positioned on the inner side are greater than those of the first flow guide partition plate positioned on the outer side; the aperture of the diversion hole of the first diversion partition plate positioned on the inner side is smaller than that of the diversion hole of the first diversion partition plate positioned on the outer side.
The lower end face is provided with a reversed-Y-shaped lower sealing ring, the lower sealing ring surrounds the opening of the lower end face of the water inlet cavity and surrounds the opening of the lower end face of the water outlet cavity, and the section of the lower sealing ring is H-shaped.
The upper end face is provided with a first upper sealing ring and a plurality of second upper sealing rings, the first upper sealing ring surrounds the opening of the upper end face of the inner air containing cavity, each second upper sealing ring surrounds the opening of the upper end face of the outer air containing cavity, and the depth and the width of each second upper sealing ring are gradually reduced along the direction from inside to outside.
And the outer wall of the outer air accommodating cavity is provided with heat dissipation teeth.
The box with upper cover plate screwed connection, the box have the water drainage tank and with screw complex screw hole, the screw hole is the blind hole, the water drainage tank with the screw hole intercommunication.
The box is equipped with the electrical interface part, the electrical interface part inlay in the box lateral wall and through encapsulating sealed fixed an organic whole.
The upper cover plate is provided with an annular side plate, and the side plate covers the peripheral surface of the top of the box body.
A new energy automobile comprises the power supply system.
The invention has the beneficial effects that:
1) the gas exchange system is formed by the content gas cavity inside the box body and the external content gas cavity, so that no exchange between the internal gas of the box body and the external gas of the box body is ensured, the sealing performance of the whole power supply system is improved, and the stability of the power supply system is further improved.
2) The electric interface part is embedded in the box body and sealed in a glue filling mode, and the sealing glue body after glue filling has the function of separating liquid.
3) The flow guide component of the water containing cavity can play a role in reducing the speed and turbulent flow of the cooling water.
4) Adopt H shape lower seal circle, make apron and box isolated down, strengthened the leakproofness.
Drawings
Fig. 1 is a bottom view of a power supply system of the present embodiment;
fig. 2 is a front view of the power supply system of the present embodiment;
fig. 3 is a schematic perspective view of the power supply system of the present embodiment (without the upper cover plate);
fig. 4 is a schematic perspective view of the power supply system of the present embodiment (without the lower cover plate);
fig. 5 is a schematic perspective view of the case of the present embodiment;
FIGS. 6 and 7 are enlarged partial schematic views of the points P and Q of FIG. 5, respectively;
fig. 8 is a schematic structural view of the lower seal ring of the present embodiment;
fig. 9 is a schematic structural view of an electrical interface member of the present embodiment;
fig. 10 is a schematic plan view of the case of the present embodiment.
Detailed Description
The present application will be described in further detail below with reference to the accompanying drawings by way of specific embodiments. Wherein like elements in different embodiments are numbered with like associated elements. In the following description, numerous details are set forth in order to provide a better understanding of the present application. However, those skilled in the art will readily recognize that some of the features may be omitted or replaced with other elements, materials, methods in different instances. In some instances, certain operations related to the present application have not been shown or described in detail in order to avoid obscuring the core of the present application from excessive description, and it is not necessary for those skilled in the art to describe these operations in detail, so that they may be fully understood from the description in the specification and the general knowledge in the art.
Furthermore, the features, operations, or characteristics described in the specification may be combined in any suitable manner to form various embodiments, and the operation steps involved in the embodiments may be interchanged or modified in order as will be apparent to those skilled in the art. Accordingly, the description and drawings are merely for clarity of description of certain embodiments and are not intended to necessarily refer to a required composition and/or order.
The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings).
As shown in fig. 1 to 10, a power supply system includes a box 4, an upper cover plate 3 and a lower cover plate 1. The housing 4 has opposite upper and lower end faces 41, 42. The upper cover plate 3 covers the upper end surface 41 and is in sealing fit with the box body. The lower cover plate 1 covers the lower end face 42 and is in sealing fit with the box body.
An air accommodating chamber 25 is opened downward from the upper end surface 41. The air-containing chamber 25 includes an outer air-containing chamber 15 and an inner air-containing chamber 18, and the inner air-containing chamber 18 and the outer air-containing chamber 15 are separated by an upper partition wall 24. The content air chamber 18 may mount therein a circuit module 17 of the power supply system, and the circuit module 17 may include a circuit board and circuit components mounted on the circuit board, and the circuit components may include circuit components capable of generating heat. The outer air containing chamber 15 is located on the outer side of the inner air containing chamber 18, the inner side being the side close to the circuit module 17 and the outer side being the side far from the circuit module 17. The upper partition wall 24 is provided with a first valve member 19 and a second valve member each connecting the inner and outer air containing chambers. The first valve member 19 has a first threshold value and the second valve member has a second threshold value, the first threshold value and the second threshold value being preset on demand. The volume of the outer air containing chamber 15 may be larger than the air volume of the inner air containing chamber 18 in which the circuit module 17 is installed. After the box body is hermetically connected with the upper cover plate and the lower cover plate, the air in the content air chamber 18 is expanded by the heat generated when the circuit module 17 operates, and when the air pressure in the content air chamber 18 reaches a first threshold value of the first valve member 19, the first valve member 19 is opened to discharge the high-pressure gas in the content air chamber 18 into the external content air chamber 15. When the air pressure in the external air-containing chamber 15 reaches the second threshold value of the second valve member, the second valve member is opened to communicate the external air-containing chamber 15 with the internal air-containing chamber 18, so that air exchange between the external air-containing chamber 15 and the internal air-containing chamber 18 is realized to ensure the stability of the internal pressure of the case.
The water containing cavity 21 is upwards formed in the lower end face 42, the water containing cavity 21 is connected with the water inlet 8 and the water outlet 7, the water inlet 8 and the water outlet 7 are both arranged on the side wall of the box body 4, a flow guide part is arranged in the water containing cavity 21, the flow guide part can guide cooling water flowing in from the water inlet 8 to the water outlet 7, sufficient heat exchange is achieved, and the cooling effect is achieved.
As shown in fig. 1 to 10, the power supply system can be applied to a new energy vehicle, and includes a box 4, an upper cover 3, and a lower cover 1. The box 4 has opposite upper and lower end faces 41, 42, with an upper cover plate 3 covering the upper end face and in sealing engagement with the box and a lower cover plate 1 covering the lower end face and in sealing engagement with the box. A bottomed air-containing chamber 25 is formed recessed downward from the upper end face 41, the air-containing chamber 25 includes a bottomed inner air-containing chamber 18 and a bottomed outer air-containing chamber 15, the outer air-containing chamber 15 and the inner air-containing chamber 18 are separated by an upper partition wall 24, and the volume of the outer air-containing chamber 15 may be larger than the air volume of the inner air-containing chamber 18. An inside air chamber 18 is located at the center of the case 4, a circuit module 17 of a power supply system is mounted on the inside air chamber 18, the upper partition wall 24 surrounds the inside air chamber 18, and the outer air chamber 15 surrounds the upper partition wall 24, i.e., the outer air chamber 15 surrounds the inside air chamber 18. The upper partition wall 24 is provided with a first exhaust valve 19 and a second exhaust valve. The first discharge valve 19 connects the inside air chamber 18 and the outside air chamber 15, and the first discharge valve 19 has a first threshold value that can be opened or closed depending on whether the air pressure in the inside air chamber 18 reaches the first threshold value. A second discharge valve connects the outer air containing chamber 15 and the inner air containing chamber 18, and has a second threshold value that can be opened or closed depending on whether the air pressure in the outer air containing chamber 15 reaches the second threshold value.
The box body 4 is hermetically connected with the upper cover plate and the lower cover plate, when the power supply system works, heat is generated, the heat enables air in the content air cavity 18 to expand, when the air pressure in the content air cavity 18 reaches a first threshold value of the first exhaust valve 19, the first exhaust valve 19 is opened, the content air cavity 18 is communicated with the outer content air cavity 15, and high-pressure air in the content air cavity 18 is discharged into the outer content air cavity 15; when the air pressure in the external air cavity 15 reaches the second threshold value of the second exhaust valve, the second exhaust valve is opened to communicate the external air cavity 15 with the internal air cavity 18, so that the air exchange between the external air cavity 15 and the internal air cavity 18 is realized, the stability of the air pressure in the box body 4 is ensured, the air exchange between the internal air cavity and the external air cavity completely occurs in the box body 4, and the air exchange with the external air of the box body does not exist.
The water containing cavity 21 is formed by upward concave arrangement from the lower end surface 42 of the box body, the water containing cavity 21 is divided into an inlet cavity 28 and an outlet cavity 29 by a lower partition wall 27, and the inlet cavity 28 and the outlet cavity 29 are arranged side by side and communicated. The side wall of the box body 4 is provided with a water inlet 8 and a water outlet 7, the water inlet 8 is communicated with the water inlet cavity 28, and the water outlet 7 is communicated with the water outlet cavity 29. The inlet 8 and outlet 7 may be substantially identical in construction, and the inlet chamber 28 and outlet chamber 29 may be substantially identical in construction. Now, taking the water inlet and the water inlet cavity as an example to explain the structure, a plurality of first diversion baffles 22 and a second diversion baffle 30 are arranged in the water inlet cavity 28, the head end of the first diversion baffle 22 is connected with the cavity wall of the water inlet cavity 28, the tail end of the first diversion baffle 22 extends towards the water inlet 8, and the tail end of the first diversion baffle 22 located at the innermost side is connected with the water inlet 8 and divides the water inlet 8 into two parts. The second baffle 30 is located at the outermost side, the head end of the second baffle is connected with one cavity wall of the water inlet cavity 28, the tail end of the second baffle is connected with the other cavity wall of the water inlet cavity 28, the two cavity walls are oppositely arranged, and the water inlet 8 is arranged on the other cavity wall. The first and second baffles 22 and 30 may each have an obtuse angle shape, and each have a straight portion parallel to the lower partition wall 27 and an inclined portion forming an obtuse angle with the straight portion. The first and second baffle plates may be disposed in parallel at intervals, and each of the first and second baffle plates has a baffle hole 23. The straight portions of the first and second baffles may be parallel to the lower partition wall 27. The straight line part and the inclined part of the first diversion clapboard and the second diversion clapboard are both provided with the diversion hole. For the water inlet cavity 28, along the inside-out direction, the height of the first diversion baffle plate 22 decreases in sequence with a certain gradient, the length thereof also decreases in sequence with a certain gradient, the aperture of the diversion hole 23 increases in sequence, and the second diversion baffle plate 30 is located at the outermost side. For the water outlet cavity 29, along the inside-out direction, the height of the first diversion partition plates 22 decreases in sequence with a certain gradient, the length thereof also decreases in sequence with a certain gradient, the aperture of the diversion holes 23 increases in sequence, the second diversion partition plates 30 are located on the outermost sides, and the tail ends of the first diversion partition plates 22 located on the innermost sides are arranged at intervals with the water outlet 7. The inner side refers to a side close to the lower partition wall 27, and the outer side refers to a side away from the lower partition wall 27. The first and second flow guide partition boards have the flow guide effect, so that the flow velocity gradient can be reduced, the liquid can be fully contacted with the heat transfer surface, the flow of the bottom surface liquid can be increased by adopting the flow guide holes 23, the bottom surface liquid is in a turbulent flow state, and the heat transfer of the bottom surface is facilitated. By adopting the three-dimensional water cooling surrounding circuit module 17, the temperature of the content air cavity 18 can be effectively reduced, the air pressure in the content air cavity is reduced, and the gas exchange times of the content air cavity and the external content air cavity are reduced.
The upper end surface 41 of the box body and the upper cover plate 3 are sealed by a sealing ring. The upper end surface 41 is provided with a first upper seal ring 14 and a plurality of second upper seal rings 13, 12 and 11. The first upper seal ring 14 has a square ring shape surrounding an opening of the inner gas containing chamber 18 at the upper end surface. Each of the second upper seal rings 13, 12, 11 is in the shape of a square ring, and surrounds an opening in the upper end surface of the outer gas containing chamber 15. Each second is gone up sealing washer 13, 12, 11 and is set up from inside to outside interval in proper order, and to adjacent twice second go up the sealing washer, the degree of depth that is located inboard second and goes up the sealing washer is greater than the degree of depth that is located the second in the outside and goes up the sealing washer, the width that is located inboard second and goes up the sealing washer is greater than the degree of depth that is located the second in the outside and goes up the sealing washer, promptly, from inside to outside, the degree of depth and the width that each second went up the sealing washer all reduce with certain gradient in proper order, adopt this structure to have multiple safeguard function, and the protective layer strengthens. The depth is the distance between the upper end face and the lower end face of each upper seal ring, the upper end face can be matched with the upper cover plate 3, and the lower end face can be matched with the box body 4. The width is the distance between the inner wall surface and the outer wall surface of each upper seal ring. The upper surface and the lower surface of each second upper sealing ring 13, 12, 11 can be in a step shape which is sequentially reduced along the direction from inside to outside; only the upper surface may be stepped.
The box body 4 and the lower cover plate 1 are sealed by a lower sealing ring 20. The lower seal ring 20 is in a chevron shape, with the lower seal ring 20 surrounding the opening of the inlet chamber 28 at the lower end face 42 and surrounding the opening of the outlet chamber 29 at the lower end face 42. The lower gasket 20 has opposite upper and lower surfaces 35, 36, the lower surface 36 being able to cooperate with the lower cover plate 1, the upper surface 35 being able to cooperate with the tank 4. The middle portion of the upper surface 35 and the middle portion of the lower surface 36 are symmetrically provided with grooves 31 so that the cross section of the lower seal ring 20 is H-shaped. The corner portions of the upper surface and the lower surface may be provided without grooves. This H shape lower seal circle 20 has the piecemeal sealed, makes the isolated characteristics of apron 1 and box 4 down, realizes two-layer sealed effect.
In this embodiment, the bottom of the water containing cavity 21 is provided with two through holes 44, the two through holes 44 are respectively located at the corner of the water inlet cavity 28 and the corner of the water outlet cavity 29, so that one through hole 44 is communicated with the water inlet cavity 28 and the outer air containing cavity 15, and the other through hole 44 is communicated with the outer air containing cavity 15 of the water outlet cavity 29, thereby realizing the communication between the water inlet cavity 28 and the water outlet cavity 29. During cooling, liquid enters the water inlet cavity 28 from the water inlet 8, the liquid fully flows under the flow guiding action of the first flow guiding partition plate 22 and the second flow guiding partition plate 30, and the liquid can flow into the external air containing cavity 15 through the through hole 44 in the water inlet cavity 28, then flows into the water outlet cavity 29 through the other through hole 44, and finally flows out through the water outlet 7. During cooling, liquid flows through the water inlet cavity 28, the outer air containing cavity 15 and the water outlet cavity 29, and the outer air containing cavity 15 surrounds the inner air containing cavity 18 with the circuit module 17, so that the three-dimensional surrounding water cooling of the circuit module 17 can be realized, the temperature of the inner air containing cavity and the temperature of the outer air containing cavity can be effectively reduced, the air pressure in the cavity is reduced, and the gas exchange times of the inner air containing cavity and the outer air containing cavity 18 and 15 are reduced. The air containing cavity 25 is formed downwards from the upper end face 41 of the box body, the water containing cavity 21 is formed upwards from the lower end face 42 of the box body, the air containing cavity 25 and the water containing cavity 21 are both cavities with cavity bottoms 45, the cavity bottoms 45 are shared by the water containing cavity and the air containing cavity, and the two through holes 44 penetrate through the cavity bottoms 45 from top to bottom. The interior of the case 4 is partitioned by a chamber bottom 45 into an upper air accommodating chamber 25 and a lower water accommodating chamber 21, and the water accommodating chamber 21 and the external air accommodating chamber 15 are communicated by two through holes 44 which vertically penetrate through the chamber bottom 45.
In this embodiment, upper cover plate 3 and box 4 pass through screw 2 to be connected, and box 4 is equipped with 2 complex screw holes 32 of screw, and this screw hole 32 is the blind hole, and box 4 still is equipped with and water drainage tank 16, and this water drainage tank 16 communicates with screw hole 32, can guarantee that the liquid that gets into from 3 screws of upper cover plate can be discharged along water drainage tank 16 rapidly, reduces the dwell time of liquid in screw department to alleviate the corruption to screw 2 and box 4.
In this embodiment, the sidewall of the box 4 may be provided with an electrical interface component 10, and the electrical interface component 10 may be embedded inside the sidewall of the box and sealed and fixed by glue filling. This electrical interface part 10 has embedded post 38 and water proof baffle 37, and this embedded post 38 and water proof baffle 37 can increase the area of contact of the sealing colloid 9 after the shaping with box 4, improve adhesion strength, and water proof baffle 37 can be isolated with the liquid of soaking and do not interconnect and converge, improves sealed effect. The side wall of the box has a mating slot 6 for mating with the electrical interface component 10, and the mating slot 6 may have a hole site 33 for mating with an embedded post 38 and a slot site 34 for mating with a water stop 37.
In this embodiment, the edge of upper cover plate is equipped with annular curb plate, and this curb plate can the outer peripheral face at cladding box top, makes the box embedded in the upper cover plate, and this structure has the effect that the liquid that makes the upper cover plate directly discharges, improves system seal nature along the box outer wall not passing through the contact surface of box and upper cover plate. The outer wall of the outer air cavity can be densely distributed with the heat dissipation teeth 5, so that the heat dissipation area of the inner heat conduction is increased, and meanwhile, the heat radiation of an external heat source to the outer wall of the box body can be prevented.
The present invention has been described in terms of specific examples, which are provided to aid understanding of the invention and are not intended to be limiting. For a person skilled in the art to which the invention pertains, several simple deductions, modifications or substitutions may be made according to the idea of the invention.
Claims (10)
1. A power supply system is characterized by comprising a box body, an upper cover plate and a lower cover plate, wherein the box body is provided with an upper end face and a lower end face which are opposite, the upper cover plate is in sealing fit with the upper end face, the lower cover plate is in sealing fit with the lower end face, an air containing cavity is formed by downward concave arrangement of the upper end face, the air containing cavity is divided into a bottom-containing air containing cavity and a bottom-containing outer air containing cavity by an upper partition wall, a circuit module is arranged in the bottom-containing air containing cavity, the upper partition wall is provided with a first valve component with a first threshold value and a second valve component with a second threshold value, and when the air pressure in the inner air containing cavity reaches the first threshold value, the first valve component is opened to enable the inner air containing cavity and the outer air containing cavity to be communicated; when the air pressure in the outer air cavity reaches the second threshold value, the second valve component is opened to communicate the outer air cavity with the inner air cavity.
2. The power supply system according to claim 1, wherein a volume of the outer air containing chamber is larger than a volume of the inner air containing chamber.
3. The power supply system according to claim 1, wherein a water receiving chamber is formed by being recessed upward from the lower end portion, the water receiving chamber is partitioned into a bottomed water inlet chamber and a bottomed water outlet chamber by a lower partition wall, a water inlet and a water outlet are provided in a side wall of the case body, the water inlet communicates with the water inlet chamber, the water outlet communicates with the water outlet chamber, the water inlet chamber communicates with the outer air receiving chamber through a through hole penetrating vertically, the water outlet chamber communicates with the outer air receiving chamber through another through hole penetrating vertically, and a flow guide member is provided in each of the water inlet chamber and the water outlet chamber.
4. The power supply system according to claim 3, wherein a plurality of first baffle plates are arranged in the water inlet cavity, each first baffle plate is arranged in parallel and at intervals, each first baffle plate is provided with a baffle hole, the length and the height of each first baffle plate are gradually reduced along the direction from inside to outside, and the aperture of each baffle hole is gradually increased; the water outlet cavity is internally provided with a plurality of first flow guide partition plates, each first flow guide partition plate is arranged in parallel and at intervals, each first flow guide partition plate is provided with flow guide holes, the length and the height of each first flow guide partition plate are gradually reduced along the direction from inside to outside, and the aperture of each flow guide hole is gradually increased.
5. The power supply system according to claim 3, wherein the lower end surface is provided with a reversed-Y-shaped lower sealing ring, the lower sealing ring surrounds the opening of the water inlet cavity on the lower end surface and surrounds the opening of the water outlet cavity on the lower end surface, and the cross section of the lower sealing ring is H-shaped.
6. The power supply system according to claim 1, wherein the upper end surface is provided with a first upper sealing ring and a plurality of second upper sealing rings, the first upper sealing ring surrounds the opening of the inner gas containing cavity on the upper end surface, each second upper sealing ring surrounds the opening of the outer gas containing cavity on the upper end surface, and the depth and the width of each second upper sealing ring are gradually reduced from inside to outside.
7. The power supply system according to claim 1, wherein an outer wall of the outer gas containing chamber is provided with heat dissipating teeth.
8. The power supply system according to claim 1, wherein the box body is provided with an electrical interface component, and the electrical interface component is embedded in the box body and fixed into a whole through glue pouring and sealing.
9. The power supply system according to claim 1, wherein the box body is screwed to the upper cover plate, the box body has a drain groove and a threaded hole matched with the screw, the threaded hole is a blind hole, and the drain groove is communicated with the threaded hole.
10. A new energy automobile, characterized by comprising the power supply system according to any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111302616.0A CN113745739B (en) | 2021-11-05 | 2021-11-05 | Power supply system and new energy automobile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111302616.0A CN113745739B (en) | 2021-11-05 | 2021-11-05 | Power supply system and new energy automobile |
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| CN113745739B true CN113745739B (en) | 2022-03-25 |
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