CN111293248B - New energy automobile power battery cooling system and cooling control method - Google Patents
New energy automobile power battery cooling system and cooling control method Download PDFInfo
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- CN111293248B CN111293248B CN202010120250.4A CN202010120250A CN111293248B CN 111293248 B CN111293248 B CN 111293248B CN 202010120250 A CN202010120250 A CN 202010120250A CN 111293248 B CN111293248 B CN 111293248B
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- 238000001816 cooling Methods 0.000 title claims abstract description 70
- 238000000034 method Methods 0.000 title claims abstract description 10
- 230000017525 heat dissipation Effects 0.000 claims abstract description 64
- 238000001514 detection method Methods 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 230000005540 biological transmission Effects 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims 2
- 230000002035 prolonged effect Effects 0.000 abstract description 5
- 230000002159 abnormal effect Effects 0.000 description 3
- 230000002441 reversible effect Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
- B60L58/26—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by cooling
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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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring 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
- H01M10/61—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
- H01M10/63—Control systems
- H01M10/635—Control systems based on ambient 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
- H01M10/65—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
- H01M10/6563—Gases with forced flow, e.g. by blowers
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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
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
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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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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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Abstract
The invention discloses a new energy automobile power battery cooling system and a cooling control method, wherein the new energy automobile power battery cooling system comprises a fixing component, a detection component and a cooling component, a top plate is provided with a first air outlet hole, a bottom plate is provided with a first air inlet hole, two sliding parts are respectively connected with the top plate, the bottom plate and a supporting part in a sliding manner, the top plate, the bottom plate, the supporting part and the sliding parts enclose to form a cavity, and a battery component is positioned in the cavity; the plurality of first sensors are uniformly distributed on the surface of the battery component, and the plurality of second sensors are respectively positioned on the supporting piece and the sliding piece; the rotating plate is provided with a second air inlet hole and communicated with the first air inlet hole, and the rotating piece is rotatably connected with the bottom plate and fixedly connected with the rotating plate. The surface and ambient temperature of the battery pack are detected, the sliding part slides to increase the space of the cavity, the first air inlet hole and the second air inlet hole are communicated or partially covered to adjust the air quantity in real time, heat dissipation balance is guaranteed, the temperature difference is reduced, and the service life of the battery pack is prolonged.
Description
Technical Field
The invention relates to the technical field of new energy automobiles, in particular to a cooling system and a cooling control method for a power battery of a new energy automobile.
Background
The new energy automobile is an automobile which adopts unconventional automobile fuel as a power source, integrates advanced technologies in the aspects of power control and driving of the automobile, and is advanced in technical principle, new in technology and new in structure.
At present, new energy electric vehicles are more and more emphasized in development, a power battery is used as the only power of a pure electric vehicle, the temperature consistency is poor easily due to unbalanced heat dissipation, the temperature difference of the battery is large, and the service life of the battery is ended easily due to overhigh regional temperature.
Disclosure of Invention
The invention aims to provide a cooling system and a cooling control method for a power battery of a new energy automobile, and aims to solve the problems that the existing power battery of the new energy automobile has poor temperature consistency due to unbalanced heat dissipation, has large battery temperature difference, and is easy to cause overhigh regional temperature to end the service life of the battery.
In order to achieve the above purpose, in a first aspect, the invention provides a new energy automobile power battery cooling system, which includes a fixing assembly, a detection assembly and a cooling assembly, where the fixing assembly includes a top plate, a bottom plate, two supporting members, two sliding members and a mounting member, the top plate and the bottom plate are arranged opposite to each other, the top plate has a first air outlet hole, the bottom plate has a plurality of first air inlet holes, the number of the first air outlet holes and the number of the first air inlet holes are both two, the two supporting members are detachably connected with the top plate and the bottom plate and are located between the top plate and the bottom plate and are arranged opposite to each other, the two sliding members are respectively slidably connected with the top plate, the bottom plate and the supporting members and are located on two sides of the two supporting members, and the top plate, the bottom plate, the sliding members are located on two sides of the two supporting members, The two supporting pieces and the two sliding pieces enclose a cavity, the mounting piece is fixedly connected with the bottom plate and the top plate and is positioned in the cavity, and the battery component is positioned in the mounting piece;
the detection assembly comprises a plurality of first sensors and a plurality of second sensors, the first sensors and the second sensors are uniformly distributed on the surface of the battery assembly, and the second sensors are respectively positioned on the supporting piece and the sliding piece;
the cooling assembly comprises a fixing piece, a rotating plate, a rotating piece, a driving piece and an air blower, wherein the fixing piece is fixedly connected with the bottom plate and is located far away from one side of the top plate, the fixing piece is provided with a groove, the groove is located close to one side of the bottom plate, the rotating plate is abutted against the bottom plate and located in the groove, the rotating plate is provided with a plurality of second air inlets, the second air inlets are communicated with the first air inlets, the rotating piece is connected with the bottom plate in a rotating mode and penetrates through the rotating plate, the rotating piece is fixedly connected with the rotating plate, the output end of the driving piece is in transmission connection with the rotating piece, and an air outlet of the air blower is communicated with the groove.
The fixing assembly further comprises at least four first elastic pieces, and the first elastic pieces are fixedly connected with the supporting piece and the sliding piece and are located in the supporting piece.
The top plate is provided with a plurality of first heat dissipation holes, and the first heat dissipation holes are distributed on one side, facing the sliding part, of the first air outlet hole.
The bottom plate is provided with a plurality of first heat dissipation holes, the number of the first heat dissipation holes is equal to that of the second heat dissipation holes, the first heat dissipation holes are opposite to the second heat dissipation holes, and the second heat dissipation holes are distributed on one side, facing the sliding part, of the first air inlet.
The cooling assembly further comprises a plurality of heat conduction rods, the heat conduction rods are fixedly connected with the rotating plate, are staggered with the second air inlet holes and are located in the grooves.
Wherein, the support piece and the sliding piece are provided with third heat dissipation holes, and the number of the third heat dissipation holes is multiple.
The new energy automobile power battery cooling system further comprises a plurality of filter screens, and each filter screen covers each third heat dissipation hole.
Wherein, cooling unit still includes cooling tube, condenser and water tank, the cooling tube with installed part fixed connection to the spiral set up in outside the installed part, the condenser with the water tank in proper order with the both ends of cooling tube are connected.
The mounting piece comprises a mounting frame, a plurality of abutting pieces and second elastic pieces, the mounting frame is fixedly connected with the bottom plate and the top plate and is located in the cavity, the number of the abutting pieces and the number of the second elastic pieces are multiple, each abutting piece abuts against a battery assembly, and each second elastic piece is fixedly connected with the mounting frame and each abutting piece and is located between each second elastic piece and the mounting frame.
In a second aspect, the invention provides a cooling control method applied to the cooling system of the power battery of the new energy automobile in the first aspect, comprising:
acquiring a first temperature value and a second temperature value acquired by a first sensor and a second sensor, and calculating a difference value of subtracting the second temperature value from the first temperature value to obtain a temperature difference;
judging whether the temperature difference is greater than a threshold value;
if the temperature difference is greater than the threshold value, outputting an air supply quantity increasing signal to the blower, and outputting a forward rotation signal to the driving piece to drive the rotating plate to rotate, wherein the first air inlet hole is communicated with the second air inlet hole;
if the temperature difference is smaller than or equal to the threshold value, a signal for reducing the air supply amount is output to the blower, a signal for reversely rotating is output to the driving piece, the rotating plate is driven to rotate, and the first air inlet hole is partially covered.
According to the cooling system and the cooling control method for the power battery of the new energy automobile, the top plate is provided with the first air outlet hole, the bottom plate is provided with the first air inlet hole, the two supporting pieces are detachably connected with the top plate and the bottom plate, the two sliding pieces are respectively in sliding connection with the top plate, the bottom plate and the supporting pieces, the top plate, the bottom plate, the two supporting pieces and the two sliding pieces form a cavity in a surrounding mode, the mounting piece is fixed in the cavity, and the battery assembly is located in the mounting piece; the plurality of first sensors are uniformly distributed on the surface of the battery component, and the plurality of second sensors are respectively positioned on the supporting piece and the sliding piece; the rotating plate abuts against the bottom plate, the rotating plate is provided with a second air inlet hole and is communicated with the first air inlet hole, the rotating piece is rotatably connected with the bottom plate, penetrates through the rotating plate and is fixedly connected with the rotating plate, the output end of the driving piece is in transmission connection with the rotating piece, and the air outlet of the air blower is communicated with the groove. The surface of the battery pack and the ambient temperature can be detected, the sliding part slides to enlarge the heat dissipation space of the cavity, the first air inlet hole and the second air inlet hole are communicated or partially covered to adjust the air quantity in real time, heat dissipation balance is guaranteed, the temperature difference is reduced, and the service life of the battery pack is prolonged.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a power battery cooling system of a new energy automobile;
FIG. 2 is a front view of the cooling system for the power battery of the new energy automobile;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
FIG. 4 is a front view of the internal structure of the cooling system for the power battery of the new energy automobile;
FIG. 5 is a partial enlarged view B of FIG. 4;
FIG. 6 is a schematic diagram of the internal structure of the cooling system for the power battery of the new energy automobile;
FIG. 7 is a flow chart of a cooling control method for a power battery of a new energy automobile according to the invention;
in the figure: 100-new energy automobile power battery cooling system, 1-fixing component, 2-detection component, 3-cooling component, 4-filter screen, 11-top plate, 12-bottom plate, 13-supporting piece, 14-sliding piece, 15-mounting piece, 16-first elastic piece, 21-first sensor, 22-second sensor, 31-fixing piece, 32-rotating plate, 33-rotating piece, 34-driving piece, 35-blower, 36-heat conduction rod, 37-radiating pipe, 38-condenser, 39-water tank, 111-first air outlet hole, 112-first radiating hole, 121-first air inlet hole, 122-second radiating hole, 131-third radiating hole, 151-mounting frame, 152-abutting piece, and, 153-second elastic member, 154-thermally conductive layer, 311-groove, 321-second intake hole, 1234-cavity, 1233-cell assembly.
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 drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Referring to fig. 1 to 6, in a first aspect, the present invention provides a new energy automobile power battery cooling system 100, including a fixing assembly 1, a detecting assembly 2, and a cooling assembly 3, where the fixing assembly 1 includes a top plate 11, a bottom plate 12, a plurality of supporting members 13, sliding members 14, and a mounting member 15, the top plate 11 and the bottom plate 12 are disposed opposite to each other, the top plate 11 has a first air outlet hole 111, the bottom plate 12 has a first air inlet hole 121, the number of the first air outlet holes 111 and the number of the first air inlet holes 121 are plural, the number of the supporting members 13 and the number of the sliding members 14 are two, the two supporting members 13 are detachably connected to the top plate 11 and the bottom plate 12 and are located between the top plate 11 and the bottom plate 12 and are disposed opposite to each other, the two sliding members 14 are respectively slidably connected to the top plate 11, the bottom plate 12, and the supporting members 13, the top plate 11, the bottom plate 12, the two supporting members 13 and the two sliding members 14 enclose a cavity 1234, the mounting member 15 is fixedly connected to the bottom plate 12 and the top plate 11 and is located in the cavity 1234, and the battery assembly 1233 is located in the mounting member 15;
the detecting assembly 2 comprises a plurality of first sensors 21 and a plurality of second sensors 22, the number of the first sensors 21 and the number of the second sensors 22 are both multiple, the plurality of first sensors 21 are uniformly distributed on the surface of the battery assembly 1233, and the plurality of second sensors 22 are respectively located on the supporting member 13 and the sliding member 14;
the cooling assembly 3 comprises a fixing member 31, a rotating plate 32, a rotating member 33, a driving member 34 and an air blower 35, wherein the fixing member 31 is fixedly connected with the bottom plate 12 and is located at one side far away from the top plate 11, the fixing member 31 is provided with a groove 311, the groove 311 is located at one side close to the bottom plate 12, the rotating plate 32 supports against the bottom plate 12 and is located in the groove 311, the rotating plate 32 is provided with a plurality of second air inlets 321, the second air inlets 321 are in a plurality and communicated with the first air inlets 121, the rotating member 33 is rotatably connected with the bottom plate 12 and penetrates through the rotating plate 32 and is fixedly connected with the rotating plate 32, the output end of the driving member 34 is in transmission connection with the rotating member 33, and the air outlet of the air blower 35 is communicated with the groove 311.
In the present embodiment, the fixing assembly 1 is used for being mounted on a new energy vehicle, and is used for fixing the battery assembly 1233; the detection assembly 2 is used for measuring the temperature of the battery assembly 1233 and the ambient environment; and the cooling assembly 3 is used for uniformly radiating heat of the battery assembly 1233. The fixed component 1 comprises a top plate 11, a bottom plate 12, a supporting piece 13, a sliding piece 14 and a mounting piece 15, wherein the top plate 11 and the bottom plate 12 are arranged up and down relatively, the top plate 11 is provided with a plurality of first air outlet holes 111, the bottom plate 12 is provided with a plurality of first air inlet holes 121, and the first air outlet holes 111 and the first air inlet holes 121 are arrayed and arranged oppositely to form air convection. The two supporting members 13 are detachably connected to the top plate 11 and the bottom plate 12, are located between the top plate 11 and the bottom plate 12, and are oppositely arranged, so that the battery assembly 1233 can be detached for maintenance and replaced. The supporting member 13 has two sliding grooves, two of the sliding grooves are located on two sides of the supporting member 13 and located on one side close to the sliding member 14, the sliding member 14 includes a transverse plate and two side plates, and the two side plates are integrally formed with the transverse plate, located on two sides of the transverse plate, slidably connected to the supporting member 13, and located in the sliding grooves. The top plate 11, the bottom plate 12, the two supporting members 13 and the two sliding members 14 enclose a cavity 1234, the mounting member 15 is fixedly connected to the bottom plate 12 and the top plate 11 and is located in the cavity 1234, the battery assembly 1233 is located in the mounting member 15, and the mounting member 15 is used for fixing the battery assembly 1233 to prevent the generation of abnormal noise due to shaking. The plurality of first sensors 21 are uniformly distributed on the surface of the battery assembly 1233, and the plurality of second sensors 22 are respectively located on the support 13 and the sliding member 14; the first sensor 21 and the second sensor 22 are both temperature sensors, and the temperature sensors are sensors capable of sensing temperature and converting the temperature into usable output signals. First sensor 21 detects the temperature on battery pack 1233 surface, and is a plurality of first sensor 21 distributes evenly, and temperature acquisition is comprehensive accurate. The second sensor 22 detects the temperature of the environment around the battery assembly 1233, that is, the temperature in the cavity 1234, and the plurality of second sensors 22 are uniformly distributed, so that the temperature collection is comprehensive and accurate. The cooling assembly 3 comprises a fixed member 31, a rotating plate 32, a rotating member 33, a driving member 34 and a blower 35, wherein the fixed member 31 is provided with a groove 311, and the air supply quantity of the blower 35 can be stored in the groove 311, so that when heat dissipation treatment is needed, the stored air supply quantity can be immediately subjected to heat dissipation treatment, and the air supply quantity is stored for a certain time, strong cold wind force cannot be generated, and the battery assembly 1233 cannot be damaged due to instant air cooling stimulation. Rotate piece 33 and be the axis of rotation, the axis of rotation supports circular motion promptly, the axle of the moment of torsion of will transmitting again, rotate piece 33 with bottom plate 12 rotates to be connected, and runs through rotor plate 32, and with rotor plate 32 fixed connection can not drive bottom plate 12 rotates, can drive rotor plate 32 rotates thereupon, driving piece 34 is the motor, can produce driving torque, thereby drives rotate piece 33 and rotate, air-blower 35 mainly comprises following six parts: motor, air cleaner, blower 35 body, air chamber, base (also serving as oil tank), oil drip nozzle. The blower 35 is eccentrically operated by a rotor offset in the cylinder, and sucks, compresses, and discharges air by changing the volume between the vanes in the rotor groove. The new energy automobile power battery cooling system 100 further comprises a controller, and the driving part 34 and the blower 35 are electrically connected with the controller.
The specific operation flow is as follows: when the temperature of the battery assembly 1233 rises, the temperature in the cavity 1234 rises along with the rise of the temperature, the expansion with heat and the contraction with cold, the air density of the cavity 1234 becomes large and does work, the sliding piece 14 is pushed to slide towards the side far away from the support piece 13, and the heat dissipation space of the cavity 1234 is enlarged, so that the heat dissipation is performed. Meanwhile, the first sensor 21 and the second sensor 22 detect the temperature of the surface of the battery assembly 1233 and the temperature of the surrounding environment, the controller obtains a first temperature value and a second temperature value, calculates the difference value between the first temperature value and the second temperature value to obtain a temperature difference, judges whether the temperature difference is greater than a preset threshold value, outputs an air supply quantity increasing signal to the air blower 35 if the temperature difference is greater than the threshold value, transmits a forward rotation signal to the driving part 34 to drive the rotating plate 32 to rotate, and the first air inlet 121 is communicated with the second air inlet 321; the rotating member 33 is driven to rotate, so as to drive the rotating plate 32 fixedly connected with the rotating member to rotate, so that each first air inlet hole 121 is communicated with each corresponding second air inlet hole 321, ventilation quantity is increased, heat dissipation is accelerated, and the first air inlet holes 121 and the second air inlet holes 321 are arrayed and balanced in heat dissipation. If the temperature difference is less than or equal to the threshold value, a reduced air volume signal is output to the blower 35, and a reverse rotation signal is output to the driving member 34 to drive the rotation plate 32 to rotate and partially cover the first air intake holes 121. Namely, the rotating member 33 is driven to rotate reversely, and then the rotating plate 32 is driven to rotate reversely, so that the first air inlet holes 121 and the second air inlet holes 321 are partially staggered according to the temperature condition, the air supply amount is reduced, the heat dissipation purpose can be achieved, and the energy waste can be avoided.
According to the cooling system 100 for the power battery of the new energy automobile, the top plate 11 is provided with the first air outlet hole 111, the bottom plate 12 is provided with the first air inlet hole 121, the two supporting pieces 13 are detachably connected with the top plate 11 and the bottom plate 12, the two sliding pieces 14 are respectively and slidably connected with the top plate 11, the bottom plate 12 and the supporting pieces 13, the top plate 11, the bottom plate 12, the two supporting pieces 13 and the two sliding pieces 14 enclose a cavity 1234, the mounting piece 15 is fixed in the cavity 1234, and the battery assembly 1233 is located in the mounting piece 15; the plurality of first sensors 21 are uniformly distributed on the surface of the battery assembly 1233, and the plurality of second sensors 22 are respectively located on the support 13 and the sliding member 14; the rotating plate 32 abuts against the bottom plate 12, the rotating plate 32 is provided with a second air inlet 321 and is communicated with the first air inlet 121, the rotating piece 33 is rotatably connected with the bottom plate 12, penetrates through the rotating plate 32 and is fixedly connected with the rotating plate 32, the output end of the driving piece 34 is in transmission connection with the rotating piece 33, and the air outlet of the air blower 35 is communicated with the groove 311. The detection of the surface temperature and the ambient temperature of the battery assembly 1233 is realized, the heat dissipation space of the cavity 1234 is enlarged by sliding the sliding part 14, the first air inlet holes 121 and the second air inlet holes 321 are communicated or partially covered to adjust the air volume in real time, the heat dissipation balance is ensured, the temperature difference is reduced, and the service life of the battery assembly 1233 is prolonged.
Further, the fixing assembly 1 further includes at least four first elastic members 16, and the first elastic members 16 are fixedly connected to the supporting member 13 and the sliding member 14 and located in the supporting member 13.
In the present embodiment, the first elastic member 16 is a return spring, which returns the engaging element to the initial position after the pressing force is removed. When the temperature of the surface of the battery assembly 1233 is normal, the first elastic element 16 is in a free stretching state, and when the temperature rises, the first elastic element 16 is in a stretching state, so that the heat dissipation space of the cavity 1234 is enlarged, the heat dissipation is accelerated, and the heat accumulation is avoided. When the temperature returns to the normal state, the first elastic member 16 releases the force and returns to the free extension state, and meanwhile, the first elastic member 16 also has the damping function, so that abnormal sound is avoided.
Further, the top plate 11 further has a plurality of first heat dissipation holes 112, the number of the first heat dissipation holes 112 is plural, and the plurality of first heat dissipation holes 112 are distributed on one side of the first air outlet hole 111 facing the sliding member 14.
In this embodiment, when the temperature of the battery assembly 1233 is in the normal temperature state, the first heat dissipation hole 112 is not communicated with the cavity 1234, i.e. is located outside the cavity 1234, and this is sufficient for heat dissipation treatment in the normal temperature state. When the temperature of the battery assembly 1233 rises, the sliding member 14 slides to a side away from the support member 13, so that the heat dissipation space of the cavity 1234 is increased, and at this time, the first heat dissipation hole 112 is communicated with the cavity 1234 to dissipate heat uniformly, thereby increasing the heat dissipation efficiency and prolonging the service life of the battery assembly 1233.
Further, the bottom plate 12 further has a plurality of second heat dissipating holes 122, each of the first heat dissipating holes 112 and each of the second heat dissipating holes 122 are disposed opposite to each other, and the plurality of second heat dissipating holes 122 are distributed on one side of the first air inlet 121 facing the sliding member 14.
In this embodiment, when the temperature of the battery assembly 1233 is in the normal temperature state, the second heat dissipation hole 122 is not communicated with the cavity 1234, i.e. is located outside the cavity 1234, and this is sufficient for heat dissipation treatment in the normal temperature state. When the temperature of the battery assembly 1233 rises, the sliding member 14 slides to a side away from the support member 13, so that the heat dissipation space of the cavity 1234 is increased, and at this time, the second heat dissipation holes 122 are communicated with the cavity 1234 and form air convection with the first heat dissipation holes 112, so that heat dissipation is balanced, heat dissipation efficiency is increased, and the service life of the battery assembly 1233 is prolonged.
Further, the cooling assembly 3 further includes a plurality of heat conduction rods 36, the number of the heat conduction rods 36 is multiple, and the heat conduction rods 36 are fixedly connected to the rotating plate 32, are staggered with the second air inlet holes 321, and are located in the groove 311.
In the present embodiment, the heat conducting rod 36 is made of metal material, such as red copper or red copper, and has good heat conducting performance. The heat conduction rod 36 is located in the groove 311, the groove 311 is communicated with an air outlet of the air blower 35, cold air is stored in the groove 311, the temperature of the groove 311 is low, and according to the heat conduction performance, the rotating plate 32 fixedly connected with the heat conduction rod 36 transfers heat energy to the groove 311 to perform heat exchange, so that heat dissipation treatment is performed.
Further, the supporting member 13 and the sliding member 14 each have a plurality of third heat dissipation holes 131, and the number of the third heat dissipation holes 131 is plural.
In this embodiment, the third heat dissipation holes 131 are respectively located on the support 13 and the sliding member 14, and are disposed opposite to each other, so as to perform heat dissipation by air convection.
Further, the new energy automobile power battery cooling system 100 further includes a plurality of filter screens 4, and each filter screen 4 covers each third heat dissipation hole 131.
In this embodiment, the filter screen 4 prevents impurities from entering the cavity 1234 to damage devices, so that the service life of the new energy automobile power battery cooling system 100 is prolonged.
Further, cooling module 3 still includes cooling tube 37, condenser 38 and water tank 39, cooling tube 37 with mounting part 15 fixed connection to the spiral set up in outside mounting part 15, condenser 38 with water tank 39 in proper order with the both ends of cooling tube 37 are connected.
In this embodiment, the condenser 38 is a component of a refrigeration system, and is one type of heat exchanger that converts a gas or vapor into a liquid and transfers the heat from the tubes to the outside of the tubes in a rapid manner. The water in the water tank 39 flows through the heat dissipation pipe 37, the water in the water tank 39 is cooled by the condenser 38, and the water flows in the heat dissipation pipe 37 to perform water-cooling heat dissipation and cooling.
Further, the mounting member 15 includes a mounting frame 151, a plurality of abutting members 152 and a plurality of second elastic members 153, the mounting frame 151 is fixedly connected to the bottom plate 12 and the top plate 11 and is located in the cavity 1234, the number of the abutting members 152 and the number of the second elastic members 153 are plural, each of the abutting members 152 abuts against a battery assembly 1233, and each of the second elastic members 153 is fixedly connected to the mounting frame 151 and each of the abutting members 152 and is located between each of the second elastic members 153 and the mounting frame 151.
In this embodiment, the supporting member 152 is a rubber sheet, and the rubber sheet is a high-elasticity polymer material with reversible deformation, and can be deformed under the action of a small external force, and can be restored to the original shape after the external force is removed; the second elastic member 153 is a spring, the mounting frame 151 is used for fixing the battery assembly 1233, and the abutting member 152 and the second elastic member 153 are arranged for replacing and fixing the battery assembly 1233, so that abnormal sound caused by shaking is avoided.
Further, the mounting member 15 further includes a heat conduction layer 154, the heat conduction layer 154 wraps the mounting frame 151, the heat conduction layer 154 is a metal material layer, has heat conductivity, is close to the battery assembly 1233, conducts heat when the temperature of the battery assembly 1233 rises, and then utilizes convection of the first air inlet hole 121, the second air inlet hole 321, the first air outlet hole 111, the first heat dissipation hole 112, the second heat dissipation hole 122 and the third heat dissipation hole 131 to dissipate heat, so that heat dissipation is balanced and efficient.
In a second aspect, referring to fig. 7, the present invention provides a cooling control method for a power battery of a new energy vehicle, including:
s101, acquiring a first temperature value and a second temperature value acquired by a first sensor 21 and a second sensor 22, and calculating a difference value of subtracting the second temperature value from the first temperature value to obtain a temperature difference;
s102, judging whether the temperature difference is larger than a threshold value or not;
if the temperature difference is greater than the threshold value, outputting an air volume increasing signal to the blower 35, and outputting a forward rotation signal to the driving part 34 to drive the rotating plate 32 to rotate, wherein the first air inlet hole 121 is communicated with the second air inlet hole 321;
if the temperature difference is less than or equal to the threshold value, a reduced air volume signal is output to the blower 35, and a reverse rotation signal is output to the driving member 34 to drive the rotation plate 32 to rotate and partially cover the first air intake holes 121.
In this embodiment of the invention, please refer to the detailed implementation of the cooling system 100 for a power battery of a new energy vehicle in the first aspect for specific implementation of S101 and S102, which is not described herein again.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A new energy automobile power battery cooling system is characterized in that,
the device comprises a fixed assembly, a detection assembly and a cooling assembly, wherein the fixed assembly comprises a top plate, a bottom plate, two supporting pieces, two sliding pieces and an installation piece, the top plate and the bottom plate are oppositely arranged from top to bottom, the top plate is provided with a first air outlet, the bottom plate is provided with a first air inlet, the number of the first air outlet and the number of the first air inlet are both multiple, the number of the supporting pieces and the number of the sliding pieces are both two, the two supporting pieces are detachably connected with the top plate and the bottom plate and are positioned between the top plate and the bottom plate and are oppositely arranged, the two sliding pieces are respectively in sliding connection with the top plate, the bottom plate and the supporting pieces and are positioned at two sides of the two supporting pieces, the top plate, the bottom plate, the two supporting pieces and the two sliding pieces enclose a cavity, and the installation piece is fixedly connected with the bottom plate and the top plate, and is positioned in the cavity, and the battery component is positioned in the mounting piece;
the detection assembly comprises a plurality of first sensors and a plurality of second sensors, the first sensors and the second sensors are uniformly distributed on the surface of the battery assembly, and the second sensors are respectively positioned on the supporting piece and the sliding piece;
the cooling assembly comprises a fixing piece, a rotating plate, a rotating piece, a driving piece and an air blower, wherein the fixing piece is fixedly connected with the bottom plate and is located far away from one side of the top plate, the fixing piece is provided with a groove, the groove is located close to one side of the bottom plate, the rotating plate is abutted against the bottom plate and located in the groove, the rotating plate is provided with a plurality of second air inlets, the second air inlets are communicated with the first air inlets, the rotating piece is connected with the bottom plate in a rotating mode and penetrates through the rotating plate, the rotating piece is fixedly connected with the rotating plate, the output end of the driving piece is in transmission connection with the rotating piece, and an air outlet of the air blower is communicated with the groove.
2. The new energy automobile power battery cooling system of claim 1,
the fixing assembly further comprises at least four first elastic pieces, and the first elastic pieces are fixedly connected with the supporting piece and the sliding piece and are located in the supporting piece.
3. The new energy automobile power battery cooling system of claim 1,
the top plate is further provided with a plurality of first heat dissipation holes, and the first heat dissipation holes are distributed on one side, facing the sliding part, of the first air outlet hole.
4. The new energy automobile power battery cooling system according to claim 3,
the bottom plate is also provided with a plurality of second heat dissipation holes, each first heat dissipation hole and each second heat dissipation hole are arranged oppositely, and the plurality of second heat dissipation holes are distributed on one side, facing the sliding part, of the first air inlet hole.
5. The new energy automobile power battery cooling system of claim 1,
the cooling assembly further comprises a plurality of heat conduction rods, the heat conduction rods are fixedly connected with the rotating plate, are staggered with the second air inlet holes and are located in the grooves.
6. The new energy automobile power battery cooling system of claim 1,
the supporting piece and the sliding piece are provided with third heat dissipation holes, and the number of the third heat dissipation holes is multiple.
7. The new energy automobile power battery cooling system of claim 6,
the new energy automobile power battery cooling system further comprises a plurality of filter screens, and each filter screen covers each third heat dissipation hole.
8. The new energy automobile power battery cooling system of claim 1,
cooling unit still includes cooling tube, condenser and water tank, the cooling tube with installed part fixed connection, and the spiral set up in outside the installed part, the condenser with the water tank in proper order with the both ends of cooling tube are connected.
9. The new energy automobile power battery cooling system of claim 8,
the mounting part comprises a mounting frame, supporting pieces and second elastic pieces, the mounting frame is fixedly connected with the bottom plate and the top plate and is located in the cavity, the number of the supporting pieces and the number of the second elastic pieces are multiple, each supporting piece supports the battery pack, and each second elastic piece is fixedly connected with the mounting frame and each supporting piece and is located between each second elastic piece and the mounting frame.
10. A cooling control method applied to the new energy automobile power battery cooling system according to any one of claims 1 to 9, characterized by comprising:
acquiring a first temperature value and a second temperature value acquired by the first sensor and the second sensor, and calculating a difference value of the first temperature value minus the second temperature value to obtain a temperature difference;
judging whether the temperature difference is greater than a threshold value;
if the temperature difference is larger than the threshold value, outputting an air supply quantity increasing signal to the blower, and outputting a forward rotation signal to the driving piece to drive the rotating plate to rotate, wherein the first air inlet hole is communicated with the second air inlet hole;
if the temperature difference is smaller than or equal to the threshold value, a signal for reducing the air supply amount is output to the air blower, and a signal for reversely rotating is output to the driving piece to drive the rotating plate to rotate and partially cover the first air inlet.
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| CN112133983A (en) * | 2020-09-25 | 2020-12-25 | 湖南衡盈电子科技有限公司 | Low-speed vehicle battery and heat dissipation device thereof |
| CN113161676B (en) * | 2021-04-26 | 2022-06-28 | 恩拓必(临沂)能源发展有限责任公司 | Battery heat dissipation system for new energy automobile and method thereof |
| CN114421090A (en) * | 2022-01-14 | 2022-04-29 | 深圳市美宝昕新材料有限公司 | Colloid exhaust device and exhaust method based on vibration structure |
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Effective date of registration: 20240308 Address after: 230000 floor 1, building 2, phase I, e-commerce Park, Jinggang Road, Shushan Economic Development Zone, Hefei City, Anhui Province Patentee after: Dragon totem Technology (Hefei) Co.,Ltd. Country or region after: China Address before: No. 1000 Taoyuan Avenue, Yubei District, Chongqing Patentee before: CHONGQING INDUSTRY POLYTECHNIC College Country or region before: China |