CN108556821B - Embedded wheel hub motor comprehensive heat management system of electric automobile - Google Patents
Embedded wheel hub motor comprehensive heat management system of electric automobile Download PDFInfo
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- CN108556821B CN108556821B CN201810347076.XA CN201810347076A CN108556821B CN 108556821 B CN108556821 B CN 108556821B CN 201810347076 A CN201810347076 A CN 201810347076A CN 108556821 B CN108556821 B CN 108556821B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T5/00—Vehicle modifications to facilitate cooling of brakes
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
- H02K9/193—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil with provision for replenishing the cooling medium; with means for preventing leakage of the cooling medium
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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
- Y02T10/64—Electric machine technologies in electromobility
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Abstract
The invention discloses an embedded hub motor comprehensive heat management system of an electric automobile, which comprises an embedded magnetic steel heat dissipation system and a brake disc spiral flow deflector heat dissipation system; the embedded magnetic steel heat dissipation system comprises embedded magnetic steel, an electromagnetic valve A, a temperature sensor A, a solution return pipeline, a steam return pipeline A, a condensation water storage tank, a solution pump A, an integrated solution storage tank, a booster pump, a fan, a power supply, a controller, a solution pump B and a solution pump C; the brake disc spiral guide vane radiating system comprises a brake disc spiral guide vane, an electromagnetic valve B, a temperature sensor B, a gas-liquid separator, a solution return pipeline B, a steam return pipeline B, a condensation water storage tank, a solution pump A, an integrated solution storage tank, a booster pump, a fan, a power supply, a controller, a solution pump B and a solution pump C. The invention has the beneficial effects that: the embedded hub motor coil heat collection, transmission and dissipation are realized, and the pulse heat load generated by the brake pad is converted into the stable heat load.
Description
Technical Field
The invention relates to the technical field of hub motor heat management systems, in particular to an embedded hub motor comprehensive heat management system of an electric automobile.
Background
With the rapid development of the economy of China, the quantity of motor vehicles kept in China is increased at a rate of 3.5% per year. The increase of the automobile holding amount not only causes energy crisis, but also the harmful substances discharged by the automobile become an important source of air pollution, and extremely adverse effects are caused to the production and the life of people. Traffic energy consumption has become a main source of local environmental pollution and global greenhouse gas emission, and people have to look to the development and utilization of new energy automobiles. Data show that compared with the traditional fuel oil automobile, the electric automobile can realize CO emission reduction every 100km2It was 7.6 kg. The electric automobile in the new energy automobile has the remarkable characteristics of high efficiency, energy conservation, low noise, zero emission and the like, so that the development of the electric automobile is an effective way for solving the problems of environmental pollution, energy shortage and the like.
Compared with the traditional motor, the hub motor has the advantages of compact structure, small volume, independent and controllable driving mode, high power density and the like, and becomes an important direction for the development of electric automobiles. The embedded hub motor has the greatest advantages that the power device, the transmission device and the brake device are integrated and embedded into the hub, the traditional parts such as a clutch, a transmission axle and the like are omitted, and the available space is increased by 15%.
However, since the in-wheel motor and the wheel rotate together and are close to the brake disc system, the integration of the system of the in-wheel motor and the wheel brings a series of heat dissipation problems such as excessive temperature rise to the motor. When the hub motor works, a large amount of heat is generated by the loss of the stator, the rotor, the coil and the like and the friction of the brake disc. The traditional hub motor mainly adopts an air cooling heat dissipation method of convection between a motor shell and air, and has single heat dissipation path and poor heat dissipation effect. The temperature rise of the hub motor must be controlled within a corresponding temperature range, so that the electric automobile can safely and efficiently run. In addition, the temperature of the brake disc system is different under different working conditions, when the brake disc system brakes, the temperature rise of the brake system can be increased rapidly, if the heat cannot be effectively dissipated, the service life of the brake disc can be greatly shortened, and even potential safety hazards are brought.
Disclosure of Invention
In order to solve the problems, the invention aims to provide an embedded hub motor comprehensive heat management system for an electric automobile, which utilizes absorption and desorption reactions of chemical solutions, has good fluidity, high heat transfer efficiency and controllable heat exchange power, can realize coil heat collection, transfer and dissipation of the embedded hub motor in a narrow space, can convert pulse heat load generated in a braking process into stable heat load, reduces a temperature change range, improves the safety of the system, has a simple structure and a full working condition adaptation range, and avoids motor performance reduction caused by overheating of a stator coil of the embedded hub motor and service life shortening caused by sharp temperature rise of a brake disc.
The invention provides a chemical solution-based integrated heat management system for an embedded hub motor of an electric automobile, which comprises an embedded magnetic steel heat dissipation system and a brake disc spiral flow deflector heat dissipation system;
the embedded magnetic steel heat dissipation system comprises embedded magnetic steel, a solenoid valve A, a temperature sensor A, a solution return pipeline, a steam return pipeline A, a condensation water storage tank, a solution pump A, an integrated solution storage tank, a booster pump, a fan, a power supply, a controller, a solution pump B and a solution pump C, wherein the temperature sensor A is arranged on the embedded magnetic steel, the embedded magnetic steel is connected with the integrated solution storage tank through the solution return pipeline A, the embedded magnetic steel is connected with the condensation water storage tank through the steam return pipeline A, the booster pump is arranged on a pipeline connecting the condensation water storage tank and the solution in the integrated solution storage tank, the fan is arranged on a pipeline connecting the condensation water storage tank and the solution in the integrated solution storage tank, the solution pump A is arranged between the condensation water storage tank and the integrated solution storage tank, the solution pump B and the electromagnetic valve A are sequentially arranged between the integrated solution storage tank and the embedded magnetic steel, and the solution pump C is connected in parallel on pipelines at two ends of the solution pump B;
the brake disc spiral flow deflector heat dissipation system comprises a brake disc spiral flow deflector, an electromagnetic valve B, a temperature sensor B, a gas-liquid separator, a solution return pipeline B, a steam return pipeline B, a condensation water storage tank, a solution pump A, an integrated solution storage tank, a booster pump, a fan, a power supply, a controller, a solution pump B and a solution pump C which are arranged close to the inner brake rotating surface, the temperature sensor B is arranged on the brake disc spiral guide vane, the brake disc spiral guide vane is connected with a liquid inlet of the gas-liquid separator, the liquid outlet of the gas-liquid separator is connected with the integrated solution storage tank through the solution return pipeline B, the gas outlet of the gas-liquid separator is connected with the condensed water storage tank through the steam return pipeline B, and the electromagnetic valve B is arranged between the brake disc spiral flow deflector and the electromagnetic valve A;
the power supply, the electromagnetic valve A, the electromagnetic valve B, the temperature sensor A, the temperature sensor B, the solution pump B and the solution pump C are all connected with the controller.
As a further improvement of the present invention, the embedded magnetic steel forms a circulation loop with the temperature sensor a, the solution return pipeline a, the steam return pipeline a, the power supply, the controller, the solution pump B, the solution pump C, and the solenoid valve a, and the embedded magnetic steel performs a desorption reaction with a chemical solution inside the embedded magnetic steel, brings heat generated by a coil winding wound on a stator core of the in-wheel motor into the condensation water storage tank and the integrated solution storage tank, performs forced convection with air driven by the fan, and transfers the heat from the inside of the in-wheel motor to the surrounding environment;
the brake disc spiral flow deflector, the gas-liquid separator, the solution return pipeline B, the steam return pipeline B, the power supply, the controller, the solution pump B and the electromagnetic valve B form a circulation loop, the brake disc spiral flow deflector generates desorption reaction through chemical solution in the brake disc spiral flow deflector, heat generated by a brake disc system is brought into the condensation water storage tank and the integrated solution storage tank, and is forced to flow with air driven by the fan, and the heat is transferred to the surrounding environment from the inside of the hub motor.
As a further improvement of the present invention, when the controller collects the signal of the temperature sensor a, the controller starts the electromagnetic valve a and the solution pump B, the chemical solution in the embedded magnetic steel is heated and evaporated to generate a desorption reaction and absorb heat, the generated water vapor flows into the condensation water storage tank along the vapor return pipeline a to generate an absorption reaction and release heat, and the dilute solution flows into the integrated solution storage tank along the solution return pipeline a;
when the controller collects a signal of the temperature sensor B, the controller starts the electromagnetic valve B and the solution pump B, chemical solution in the spiral guide vane of the brake disc is heated and evaporated to generate desorption reaction and absorb heat, the generated water vapor flows into the condensation water storage tank along the vapor return pipeline B to generate absorption reaction and release heat, and dilute solution flows into the integrated solution storage tank along the solution return pipeline B;
when the controller simultaneously collects signals of the temperature sensor A and the temperature sensor B, the controller starts the electromagnetic valve A and the electromagnetic valve B, the solution pump B and the solution pump C are simultaneously opened, chemical solution in the embedded magnetic steel and the brake disc spiral flow deflector is heated and evaporated to generate desorption reaction and absorb heat, generated water vapor respectively flows into the condensation water storage tank along the steam return pipeline A and the steam return pipeline B to generate absorption reaction and release heat, and dilute solution flows into the integrated solution storage tank along the solution return pipeline A and the solution return pipeline B.
As a further improvement of the invention, a micro-channel solution generator is arranged in the embedded magnetic steel, a liquid inlet of the micro-channel solution generator and a chemical solution in the embedded magnetic steel enter the micro-channel in the micro-channel solution generator through the liquid inlet to perform a circulating reaction, a dilute solution enters the integrated solution storage tank through a liquid outlet of the micro-channel solution generator and the solution return pipeline which are connected, and water vapor enters the condensed water storage tank through a vapor outlet of the micro-channel solution generator and the vapor return pipeline A which are connected.
As a further improvement of the invention, the micro-channel solution generator comprises a left cover plate, a partition plate and a right cover plate which are sequentially punched and laminated, wherein a liquid inlet is formed in the left cover plate, a liquid outlet and a steam outlet are formed in the right cover plate, and micro-channel flow pattern control pieces are arranged between the left cover plate and the partition plate and between the partition plate and the right cover plate.
As a further improvement of the invention, the micro-channel flow pattern control plate is sequentially provided with a micro-channel cold collector and a plurality of slotted holes along the vertical direction, and is provided with a micro-channel hot collector along the horizontal direction, a plurality of micro-channels are arranged between the micro-channel cold collector and one slotted hole, between the adjacent slotted holes and on one side of the other slotted hole, the micro-channel cold collector is connected with the micro-channels through micro-channel cold collector pipelines, and the micro-channel hot collector is connected with the micro-channels through micro-channel hot collector pipelines;
the left cover plate and the right cover plate are both provided with a plurality of slotted holes corresponding to the micro-channel flow pattern control sheets;
the clapboard is provided with a micro-channel cold collector corresponding to the micro-channel flow pattern control sheet, a plurality of slotted holes and a micro-channel hot collector.
As a further improvement of the invention, the left cover plate, the micro-channel flow pattern control sheet, the clapboard and the right cover plate are all provided with two slotted holes.
As a further improvement of the invention, the widths of the micro-channel cold liquid collector and the micro-channel hot liquid collector are 3-5mm, the widths of the micro-channel cold liquid pipeline and the micro-channel hot liquid pipeline are 85-100um, and the width of the micro-channel is 50-85 um.
As a further improvement of the invention, the chemical solution arranged in the embedded magnetic steel and the spiral guide vane of the brake disc is a lithium bromide solution.
As a further improvement of the invention, the brake disc spiral guide vane comprises a round pipe and a spiral guide vane in the round pipe.
The invention has the beneficial effects that:
1. the absorption and desorption reaction of the chemical solution is used, the conversion of the temperature difference and the concentration difference is essentially used, the heat generated by the hub motor coil and the brake disc system is discharged to the external space, and the heat dissipation effect is obvious;
2. the lithium bromide-water solution of the environment-friendly working medium is selected, so that the flowability is good, the heat transfer efficiency is high, and the heat exchange power is controllable;
3. the spiral flow deflector adopted in the cooling system of the spiral flow deflector of the brake disc skillfully conforms to the mechanical design of the hub motor, so that the structure is more reasonable and applicable;
4. the embedded magnetic steel heat dissipation system and the brake disc spiral flow deflector heat dissipation system share a local circulating system consisting of the condensation water storage tank, the solution pump A, the integrated solution storage tank, the booster pump and the fan, and the structure is simple, the space is saved, and the heat dissipation is more efficient.
Drawings
FIG. 1 is a schematic diagram of an embedded hub motor comprehensive heat management system of an electric vehicle according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a microchannel solution generator according to an embodiment of the present invention;
FIG. 3 is a schematic structural view of the microchannel flow pattern control sheet shown in FIG. 2;
FIG. 4 is a schematic view of the separator of FIG. 2;
FIG. 5 is a schematic structural view of the spiral guide vane of the brake disc in FIG. 1;
fig. 6 is a schematic view showing the structure of the gas-liquid separator in fig. 1.
In the figure, the position of the upper end of the main shaft,
1. an embedded magnetic steel heat dissipation system; 2. a brake disc spiral flow deflector heat dissipation system; 1-1, embedded magnetic steel; 1-2, an electromagnetic valve A; 1-3, a temperature sensor A; 1-4, a solution return line A; 1-5, a steam return pipeline A; 1-1-1, a liquid inlet; 1-1-2, a left cover plate; 1-1-3, micro-channel flow pattern control sheet; 1-1-4, a separator; 1-1-5, right cover plate; 1-1-6, a liquid outlet; 1-1-7, steam outlet; 1-1-3-1, a micro-channel cold liquid collecting device; 1-1-3-2, micro-channel hot liquid pipeline; 1-1-3-3, slotted hole; 1-1-3-4, a micro-channel heat collecting liquid device; 1-1-3-5, micro-channel cold liquid pipeline; 1-1-3-6, microchannels; 2-1, a brake disc spiral guide vane; 2-2, an electromagnetic valve B; 2-3, a temperature sensor B; 2-4, a gas-liquid separator; 2-5, a solution return line A; 2-6, a steam return pipeline A; 5-1-1, round tube; 5-2-2, spiral flow deflectors; 12-1, condensing and storing water; 12-2, a solution pump A; 12-3, an integrated solution storage tank; 12-4, a booster pump; 12-5, a fan; 12-6, a power supply; 12-7, a controller; 12-8, a solution pump B; 12-9 and a solution pump C.
Detailed Description
The present invention will be described in further detail below with reference to specific embodiments and with reference to the attached drawings.
As shown in fig. 1, the integrated thermal management system for the embedded hub motor of the electric vehicle in the embodiment of the invention comprises an embedded magnetic steel heat dissipation system 1 and a brake disc spiral flow deflector heat dissipation system 2. The motor is applied to an embedded hub motor of an electric automobile, and the hub motor is a product in the prior art.
The embedded magnetic steel heat dissipation system 1 comprises embedded magnetic steel 1-1, an electromagnetic valve A1-2, a temperature sensor A1-3, a solution return pipeline 1-4A, a steam return pipeline A1-5, a condensation water storage tank 12-1, a solution pump A12-2, an integrated solution storage tank 12-3, a booster pump 12-4, a fan 12-5, a power supply 12-6, a controller 12-7, a solution pump B12-8 and a solution pump C12-9, wherein the embedded magnetic steel 1-1 is an existing component in a hub motor. The embedded magnetic steel 1-1 is provided with a temperature sensor A1-3, the embedded magnetic steel 1-1 is connected with an integrated solution storage tank 12-3 through a solution return pipeline 1-4A, the embedded magnetic steel 1-1 is connected with a condensation water storage tank 12-1 through a steam return pipeline A1-5, a booster pump 12-4 is arranged on a pipeline connecting the condensation water storage tank 12-1 and the solution in the integrated solution storage tank 12-3, a fan 12-5 is arranged on a pipeline connecting the condensation water storage tank and the solution in the integrated solution storage tank 12-1, a solution pump A12-2 is arranged between the condensation water storage tank 12-1 and the integrated solution storage tank 12-3, a solution pump B12-8 and an electromagnetic valve A1-2 are sequentially arranged between the integrated solution storage tank 12-3 and the embedded magnetic steel 1-1, and the pipelines at the two ends of the solution pump B12-8 are connected in parallel with a solution pump C12-9. Wherein, the condensation water storage tank 12-1, the solution pump A12-2, the integrated solution storage tank 12-3, the booster pump 12-4 and the fan 12-5 form a local circulating system, so that the heat dissipation is more efficient.
The brake disc spiral guide vane heat dissipation system 2 comprises a brake disc spiral guide vane 2-1, an electromagnetic valve B2-2, a temperature sensor B2-3, a gas-liquid separator 2-4, a solution return pipeline B2-5, a steam return pipeline B2-6, a condensed water storage tank 12-1, a solution pump A12-2, an integrated solution storage tank 12-3, a booster pump 12-4, a fan 12-5, a power supply 12-6, a controller 12-7, a solution pump B12-8 and a solution pump C12-9, wherein the brake disc spiral guide vane 2-1 is provided with the temperature sensor B2-3, the brake disc spiral guide vane 2-1 is connected with a liquid inlet of the gas-liquid separator 2-4, and a liquid outlet of the gas-liquid separator 2-4 is connected with the integrated liquid guide vane 2-1 through the solution return pipeline B2-5 The solution storage tank 12-3 is connected, the gas outlet of the gas-liquid separator 2-4 is connected with the condensed water storage tank 12-1 through a steam return pipeline B2-6, and an electromagnetic valve B2-2 is arranged between the brake disc spiral flow deflector 2-1 and the electromagnetic valve A1-2. The gas-liquid separator 2-4 is shown in FIG. 6.
The power supply 12-6, the electromagnetic valve A1-2, the electromagnetic valve B2-2, the temperature sensor A1-3, the temperature sensor B2-3, the solution pump B12-8 and the solution pump C12-9 are all connected with the controller 12-7. The temperature sensors A1-3 and B2-3 collect temperature signals of the embedded magnetic steel heat dissipation system 1 and the brake disc spiral guide vane heat dissipation system 2, the controller 12-7 is controlled by the power supply 12-6 to receive the temperature signals of the temperature sensors A1-3 and B2-3, the controller 12-7 outputs control signals to control the starting and closing of the electromagnetic valve A1-2, the electromagnetic valve B2-2, the solution pump B12-8 and the solution pump C12-9, and therefore the flow of solution is adjusted, and further the temperature is adjusted. The controller 12-7 controls to open different circulation loops according to different temperature signals, and adjusts different solution flow rates, so that heat of different sizes is dissipated while the system works stably.
The working principle of the embedded hub motor comprehensive heat management system of the electric automobile is as follows: the embedded magnetic steel 1-1, the temperature sensor A1-3, the solution return pipeline A1-4, the steam return pipeline A1-5, the power supply 12-6, the controller 12-7, the solution pump B12-8, the solution pump C12-9 and the electromagnetic valve A1-2 form a circulation loop, the embedded magnetic steel 1-1 carries out desorption reaction through chemical solution in the embedded magnetic steel, heat generated by a coil winding wound on a stator core of the hub motor is brought into the condensation water storage tank 12-1 and the integrated solution storage tank 12-3, forced convection is carried out between the heat and air driven by the fan 12-5, and the heat is transferred to the surrounding environment from the interior of the hub motor; the brake disc spiral flow deflector 2-1, the gas-liquid separator 2-4, the solution return pipeline B2-5, the steam return pipeline B2-6, the power supply 12-6, the controller 12-7, the solution pump B12-8 and the electromagnetic valve B2-2 form a circulation loop, the brake disc spiral flow deflector 2-1 carries out desorption reaction through chemical solution in the brake disc spiral flow deflector, heat generated by a brake disc system is carried to the condensation water storage tank 12-1 and the integrated solution storage tank 12-3, forced convection is carried out between the heat and air driven by the fan 12-5, and the heat is transferred to the surrounding environment from the interior of the hub motor.
Furthermore, the chemical reaction in the embedded magnetic steel 1-1 is completed by the micro-channel solution generator arranged in the embedded magnetic steel 1-1, the channel solution generator realizes the function of collecting heat flow in the space of the embedded magnetic steel, a liquid inlet 1-1-1 of the micro-channel solution generator and the chemical solution in the embedded magnetic steel 1-1 enter the micro-channel in the micro-channel solution generator through the liquid inlet 1-1-1 to perform circulating reaction, dilute solution is connected with a solution return pipeline 1-4 through a liquid outlet 1-1-6 of the micro-channel solution generator to enter an integrated solution storage tank 12-3, and water vapor is connected with a vapor return pipeline A1-5 through a vapor outlet 1-1-7 of the micro-channel solution generator to enter a condensation water storage tank 12-1.
Specifically, as shown in fig. 2, the micro-channel solution generator comprises a left cover plate 1-1-2, a partition plate 1-1-4 and a right cover plate 1-1-5 which are sequentially punched and laminated, wherein a liquid inlet 1-1-1 is arranged on the left cover plate 1-1-2, a liquid outlet 1-1-6 and a vapor outlet 1-1-7 are arranged on the right cover plate 1-1-5, and micro-channel flow pattern control sheets 1-1-3 are respectively arranged between the left cover plate 1-1-2 and the partition plate 1-1-4 and between the partition plate 1-1-4 and the right cover plate 1-1-5.
As shown in figure 3, the micro-channel flow pattern control sheet 1-1-3 is sequentially provided with a micro-channel cold collector 1-1-3-1 and a plurality of slots 1-1-3-3 along the vertical direction, a micro-channel hot collector 1-1-3-4 along the horizontal direction, a plurality of micro-channels 1-1-3-6 are respectively arranged between the micro-channel cold collector 1-1-3-1 and one slot 1-1-3-3, between the adjacent slots 1-1-3-3 and on one side of the other slot 1-1-3-3, the micro-channel cold collector 1-1-3-1 is connected with a plurality of micro-channels 1-1-3-6 through micro-channel cold collector pipelines 1-1-3-5, the micro-channel heat collector 1-1-3-4 is connected with a plurality of micro-channels 1-1-3-6 through micro-channel hot liquid pipelines 1-1-3-2.
The left cover plate 1-1-2 and the right cover plate 1-1-5 are respectively provided with a plurality of slotted holes 1-1-3-3 corresponding to the micro-channel flow pattern control sheets 1-1-3.
As shown in figure 4, a micro-channel cold water collecting device 1-1-3-1, a plurality of slotted holes 1-1-3-3 and a micro-channel heat water collecting device 1-1-3-4 which correspond to the micro-channel flow type control sheets 1-1-3 are arranged on the partition board 1-1-4.
In the embodiment, the left cover plate 1-1-2, the micro-channel flow pattern control sheet 1-1-3, the partition plate 1-1-4 and the right cover plate 1-1-5 are respectively provided with two slotted holes 1-1-3-3.
Preferably, the widths of the micro-channel cold liquid collecting device 1-1-3-1 and the micro-channel heat liquid collecting device 1-1-3-4 are 3-5mm, the widths of the micro-channel cold liquid pipeline 1-1-3-5 and the micro-channel hot liquid pipeline 1-1-3-2 are 85-100um, and the width of the micro-channel 1-1-3-6 is 50-85 um.
Further, as shown in fig. 5, in order to make the brake disc spiral deflector 2-1 fit the mechanical design of the hub motor, the brake disc spiral deflector 2-1 is arranged close to the outer brake disc, and comprises a circular tube 5-1-1 and a spiral deflector 5-2-2 inside the circular tube 5-1-1, the spiral deflector has a simple structure, chemical solution causes gas-liquid two-phase flow in the circular tube of the brake disc spiral deflector 2-1, and the spiral deflector inside the circular tube can improve the heat exchange efficiency, the structure not only fits the design of the automobile, but also modulates the large heat flow and large density heat load concentrated on the brake disc during the braking process into a long-time stable and small heat load, and discharges the long-time stable and small heat load to the surrounding environment.
When the controller 12-7 collects signals of the temperature sensor A1-3, the controller 12-7 starts the electromagnetic valve A1-2 and the solution pump B12-8, chemical solution in the embedded magnetic steel 1-1 is heated and evaporated to generate desorption reaction and absorb heat, generated water vapor returns to the condensation water storage tank 12-1 along the vapor return pipeline A1-5, absorption reaction occurs, heat is released, the dilute solution is returned to the integrated solution storage tank 12-3 along the solution return line A1-4, the working medium (chemical solution) circulation loop brings the heat generated by the coil into the condensation water storage tank 12-1 and the integrated solution storage tank 12-3, and the air is forced to flow in a convection way with the air driven by the fan 12-5, so that the heat is discharged to the surrounding environment, and the function of temperature reduction and protection is realized.
When the controller 12-7 collects the signal of the temperature sensor B2-3, the controller 12-7 starts the electromagnetic valve B2-2 and the solution pump B12-8, the chemical solution in the 2-1 spiral flow deflector of the brake disc is heated and evaporated to generate desorption reaction and absorb heat, the generated water vapor returns to the pipeline B2-6 along the vapor to the condensed water storage tank 12-1, absorption reaction occurs, heat is released, the dilute solution returns to the integrated solution storage tank 12-3 along the solution return pipeline B2-5, the working medium (chemical solution) circulation loop carries the heat generated by the brake disc to the condensation water storage tank 12-1 and the integrated solution storage tank 12-3, and the air driven by the fan 12-5 generates forced convection, so that the heat is discharged to the surrounding environment, and the function of temperature reduction and protection is realized.
When the controller 12-7 simultaneously acquires signals of the temperature sensor A1-3 and the temperature sensor B2-3, the controller 12-7 starts the electromagnetic valve A1-2 and the electromagnetic valve B2-2, at the moment, in order to ensure the flow of the chemical solution, the solution pump B12-8 and the solution pump C12-9 are simultaneously opened, the chemical solution in the embedded magnetic steel 1-1 and the 2-1 in the brake disc spiral guide vane is heated and evaporated to generate desorption reaction and absorb heat, the generated water vapor respectively flows into the condensation water storage tank 12-1 along the vapor return pipeline A1-5 and the vapor return pipeline B2-6 to generate absorption reaction and release heat, the dilute solution flows into the integrated solution storage tank 12-3 along the solution return pipeline A1-4 and the solution return pipeline B2-5, the working medium (chemical solution) circulation loop carries the heat generated by the coil and the brake disc system to the condensation water storage tank 12-1 and the integrated solution storage tank 12-3, and the heat and the air driven by the fan 12-5 generate forced convection, so that the heat is discharged to the surrounding environment, and the function of cooling protection is realized.
The invention utilizes the characteristic of absorption type energy storage of chemical solution to store and release energy through the reversible change of energy storage working medium, the desorption process is an energy charging process, the dilute solution in the integrated solution storage tank absorbs external heat to become concentrated solution and gaseous refrigerant, the condensed refrigerant is stored in the condensed water storage tank in a liquid state, the concentrated solution after analysis is stored in the embedded magnetic steel and the brake disc spiral flow deflector, the absorption process is a heat dissipation process, the liquid refrigerant (aqueous solution) stored in the condensed water storage tank is gasified and generates absorption reaction with the concentrated solution (namely, the chemical solution) from the embedded magnetic steel and the brake disc spiral flow deflector and releases heat to generate dilute solution which is stored in the integrated solution storage tank. In this embodiment, the chemical solution embedded in the embedded magnetic steel 1-1 and the brake disc spiral deflector 2-1 is a lithium bromide solution, but not limited to the above solutions, and may be a chemical solution capable of realizing desorption and absorption reactions.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An embedded hub motor comprehensive heat management system of an electric automobile is characterized by comprising an embedded magnetic steel heat dissipation system (1) and a brake disc spiral flow deflector heat dissipation system (2);
the embedded magnetic steel heat dissipation system (1) comprises embedded magnetic steel (1-1), an electromagnetic valve A (1-2), a temperature sensor A (1-3), a solution return pipeline A (1-4), a steam return pipeline A (1-5), a condensation water storage tank (12-1), a solution pump A (12-2), an integrated solution storage tank (12-3), a booster pump (12-4), a fan (12-5), a power supply (12-6), a controller (12-7), a solution pump B (12-8) and a solution pump C (12-9), wherein the temperature sensor A (1-3) is arranged on the embedded magnetic steel (1-1), the embedded magnetic steel (1-1) is connected with the integrated solution storage tank (12-3) through the solution return pipeline A (1-4), the embedded magnetic steel (1-1) is connected with the condensed water storage tank (12-1) through the steam return pipeline A (1-5), the booster pump (12-4) is arranged on a pipeline connected with the solution in the condensed water storage tank (12-1) and the integrated solution storage tank (12-3), the fan (12-5) is arranged outside the pipeline connected with the solution in the condensed water storage tank (12-1) and the integrated solution storage tank (12-3), the solution pump A (12-2) is arranged between the condensed water storage tank (12-1) and the integrated solution storage tank (12-3), the solution pump B (12-8) and the electromagnetic valve A (1-2) are sequentially arranged between the integrated solution storage tank (12-3) and the embedded magnetic steel (1-1), the pipelines at the two ends of the solution pump B (12-8) are connected with the solution pump C (12-9) in parallel;
the brake disc spiral guide vane heat dissipation system (2) comprises a brake disc spiral guide vane (2-1) tightly attached to an inner brake rotating surface, an electromagnetic valve B (2-2), a temperature sensor B (2-3), a gas-liquid separator (2-4), a solution return pipeline B (2-5), a steam return pipeline B (2-6), a condensed water storage tank (12-1), a solution pump A (12-2), an integrated solution storage tank (12-3), a booster pump (12-4), a fan (12-5), a power supply (12-6), a controller (12-7), a solution pump B (12-8) and a solution pump C (12-9), wherein the temperature sensor B (2-3) is arranged on the brake disc spiral guide vane (2-1), the brake disc spiral flow deflector (2-1) is connected with a liquid inlet of the gas-liquid separator (2-4), a liquid outlet of the gas-liquid separator (2-4) is connected with the integrated solution storage tank (12-3) through the solution return pipeline B (2-5), a gas outlet of the gas-liquid separator (2-4) is connected with the condensed water storage tank (12-1) through the steam return pipeline B (2-6), and the electromagnetic valve B (2-2) is arranged between the brake disc spiral flow deflector (2-1) and the electromagnetic valve A (1-2);
the power supply (12-6), the electromagnetic valve A (1-2), the electromagnetic valve B (2-2), the temperature sensor A (1-3), the temperature sensor B (2-3), the solution pump B (12-8) and the solution pump C (12-9) are all connected with the controller (12-7).
2. The integrated heat management system for the embedded hub motor of the electric automobile according to claim 1, wherein the embedded magnetic steel (1-1) forms a circulation loop with the temperature sensor A (1-3), the solution return pipeline A (1-4), the steam return pipeline A (1-5), the power supply (12-6), the controller (12-7), the solution pump B (12-8), the solution pump C (12-9) and the solenoid valve A (1-2), and the embedded magnetic steel (1-1) carries heat generated by a coil winding wound on a stator core of the hub motor into the condensation water storage tank (12-1) and the integrated solution storage tank (12-3) through desorption reaction of chemical solution inside the embedded magnetic steel (1-1), and performs forced convection with the air driven by the fan (12-5) to transfer heat from the interior of the hub motor to the surrounding environment;
the brake disc spiral flow deflector (2-1), the gas-liquid separator (2-4), the solution return pipeline B (2-5), the steam return pipeline B (2-6), the power supply (12-6), the controller (12-7), the solution pump B (12-8) and the electromagnetic valve B (2-2) form a circulation loop, the brake disc spiral flow deflector (2-1) carries out desorption reaction through chemical solution in the brake disc spiral flow deflector, heat generated by a brake disc system is brought into the condensation water storage tank (12-1) and the integrated solution storage tank (12-3), forced convection is carried out between the heat and air driven by the fan (12-5), and the heat is transferred to the surrounding environment from the interior of the hub motor.
3. The integrated heat management system for the embedded hub motor of the electric automobile according to claim 2, wherein when the controller (12-7) collects the signal of the temperature sensor a (1-3), the controller (12-7) starts the solenoid valve a (1-2) and the solution pump B (12-8), the chemical solution in the embedded magnetic steel (1-1) is heated and evaporated, a desorption reaction occurs, heat is absorbed, the generated water vapor flows to the condensed water storage tank (12-1) along the vapor return line a (1-5), an absorption reaction occurs, heat is released, and a dilute solution flows to the integrated solution storage tank (12-3) along the solution return line a (1-4);
when the controller (12-7) collects a signal of the temperature sensor B (2-3), the controller (12-7) starts the electromagnetic valve B (2-2) and the solution pump B (12-8), chemical solution in the brake disc spiral guide vane (2-1) is heated and evaporated to generate desorption reaction and heat absorption, generated water vapor is returned to the condensed water storage tank (12-1) along the vapor return pipeline B (2-6) to generate absorption reaction and heat release, and dilute solution is returned to the integrated solution storage tank (12-3) along the solution return pipeline B (2-5);
when the controller (12-7) collects signals of the temperature sensor A (1-3) and the temperature sensor B (2-3) at the same time, the controller (12-7) starts the electromagnetic valve A (1-2) and the electromagnetic valve B (2-2), the solution pump B (12-8) and the solution pump C (12-9) are opened at the same time, chemical solution in the embedded magnetic steel (1-1) and the brake disc spiral flow deflector (2-1) is heated and evaporated to generate desorption reaction and heat absorption, generated water vapor respectively flows into the condensation water storage tank (12-1) along the vapor return pipeline A (1-5) and the vapor return pipeline B (2-6) to generate absorption reaction and release heat, and diluted solution flows into the solution return pipeline A (1-4) and the solution return pipeline B (2-5) Into the integrated solution storage tank (12-3).
4. The integrated thermal management system for the embedded hub motor of the electric vehicle as claimed in claim 1, the integrated water-cooling system is characterized in that a micro-channel solution generator is arranged in the embedded magnetic steel (1-1), a liquid inlet (1-1-1) of the micro-channel solution generator and chemical solution in the embedded magnetic steel (1-1) enter the micro-channel in the micro-channel solution generator through the liquid inlet (1-1-1) to perform circular reaction, dilute solution is connected with the solution return pipeline (1-4) through a liquid outlet (1-1-6) of the micro-channel solution generator to enter the integrated solution storage tank (12-3), and water vapor is connected with the steam return pipeline A (1-5) through a steam outlet (1-1-7) of the micro-channel solution generator to enter the condensed water storage tank (12-1).
5. The integrated thermal management system for the embedded hub motor of the electric vehicle as claimed in claim 4, it is characterized in that the micro-channel solution generator comprises a left cover plate (1-1-2), a clapboard (1-1-4) and a right cover plate (1-1-5) which are sequentially punched and laminated, a liquid inlet (1-1-1) is arranged on the left cover plate (1-1-2), a liquid outlet (1-1-6) and a steam outlet (1-1-7) are arranged on the right cover plate (1-1-5), micro-channel flow type control sheets (1-1-3) are arranged between the left cover plate (1-1-2) and the partition plate (1-1-4) and between the partition plate (1-1-4) and the right cover plate (1-1-5).
6. The integrated heat management system of the embedded in-wheel motor of the electric automobile according to claim 5, characterized in that the micro-channel flow pattern control plate (1-1-3) is provided with a micro-channel cold collector (1-1-3-1) and a plurality of slots (1-1-3-3) in sequence along the vertical direction, a micro-channel hot collector (1-1-3-4) is provided along the horizontal direction, a plurality of micro-channels (1-1-3-6) are respectively provided between the micro-channel cold collector (1-1-3-1) and one slot (1-1-3-3), between the adjacent slots (1-1-3-3) and on one side of the other slot (1-1-3-3), the microchannel heat collecting liquid device (1-1-3-4) is connected with the microchannels (1-1-3-6) through the microchannel cold liquid pipelines (1-1-3-5), and the microchannel heat collecting liquid device (1-1-3-6) is connected with the microchannels (1-1-3-6) through the microchannel hot liquid pipelines (1-1-3-2);
a plurality of slotted holes (1-1-3-3) corresponding to the micro-channel flow pattern control sheets (1-1-3) are formed in the left cover plate (1-1-2) and the right cover plate (1-1-5);
the clapboard (1-1-4) is provided with a micro-channel cold and liquid collecting device (1-1-3-1), a plurality of slotted holes (1-1-3-3) and a micro-channel heat and liquid collecting device (1-1-3-4) which correspond to the micro-channel flow pattern control sheet (1-1-3).
7. The integrated heat management system for the embedded hub motor of the electric automobile according to claim 6, wherein the left cover plate (1-1-2), the micro-channel flow pattern control sheet (1-1-3), the partition plate (1-1-4) and the right cover plate (1-1-5) are respectively provided with two slotted holes (1-1-3-3).
8. The embedded in-wheel motor comprehensive heat management system of electric automobile of claim 6, characterized in that the width of microchannel cold liquid collector (1-1-3-1) and microchannel heat liquid collector (1-1-3-4) is 3-5mm, the width of microchannel cold liquid pipeline (1-1-3-5) and microchannel hot liquid pipeline (1-1-3-2) is 85-100um, and the width of microchannel (1-1-3-6) is 50-85 um.
9. The integrated heat management system for the embedded hub motor of the electric automobile according to claim 1, wherein the chemical solution arranged in the embedded magnetic steel (1-1) and the spiral flow deflector (2-1) of the brake disc is a lithium bromide solution.
10. The embedded type in-wheel motor comprehensive heat management system of the electric automobile according to claim 1, characterized in that the brake disc spiral flow deflector (2-1) comprises a round tube (5-1-1) and a spiral flow deflector (5-2-2) inside the round tube (5-1-1).
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| CN201810347076.XA CN108556821B (en) | 2018-04-18 | 2018-04-18 | Embedded wheel hub motor comprehensive heat management system of electric automobile |
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| CN201810347076.XA CN108556821B (en) | 2018-04-18 | 2018-04-18 | Embedded wheel hub motor comprehensive heat management system of electric automobile |
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| CN108556821B true CN108556821B (en) | 2020-05-22 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103378667A (en) * | 2012-04-26 | 2013-10-30 | 西门子公司 | A stator segment for cooling and supporting an electro-mechanical machine, especially for wind turbine application |
| CN103391799A (en) * | 2010-08-10 | 2013-11-13 | 佐治亚科技研究公司 | Vapor-liquid heat and/or mass exchange device |
| CN204623116U (en) * | 2015-05-30 | 2015-09-09 | 谷伟 | A kind of automobile electrical motor car wheel |
| CN205533914U (en) * | 2016-03-16 | 2016-08-31 | 云南科威液态金属谷研发有限公司 | Brake block and be equipped with car of this brake block |
| CN205882115U (en) * | 2016-05-20 | 2017-01-11 | 广东工业大学 | Microchannel battery heat managing system based on waste heat recovery |
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2018
- 2018-04-18 CN CN201810347076.XA patent/CN108556821B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103391799A (en) * | 2010-08-10 | 2013-11-13 | 佐治亚科技研究公司 | Vapor-liquid heat and/or mass exchange device |
| CN103378667A (en) * | 2012-04-26 | 2013-10-30 | 西门子公司 | A stator segment for cooling and supporting an electro-mechanical machine, especially for wind turbine application |
| CN204623116U (en) * | 2015-05-30 | 2015-09-09 | 谷伟 | A kind of automobile electrical motor car wheel |
| CN205533914U (en) * | 2016-03-16 | 2016-08-31 | 云南科威液态金属谷研发有限公司 | Brake block and be equipped with car of this brake block |
| CN205882115U (en) * | 2016-05-20 | 2017-01-11 | 广东工业大学 | Microchannel battery heat managing system based on waste heat recovery |
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