Cooling heat exchange system, method, cooling device controller for electrically powered aerial vehicles

Abstract

The application relates to a cooling and heat exchange system, a method and a cooling device controller of an electric aerial vehicle. The cooling and heat exchange system comprises a cooling liquid tank, a flow regulating valve, a cooling device controller and multiple temperature sensors; the cooling device controller is electrically connected with the cooling liquid tank, the flow regulating valve and the multiple temperature sensors respectively; the multiple temperature sensors are arranged at the cooling liquid tank, a cooled device and a liquid supply pipeline between the flow regulating valve and the cooled device respectively; the cooling device controller is used for acquiring a cooling liquid temperature in the cooling liquid tank, a first temperature of the cooled device and a second temperature of the cooling liquid input into the cooled device from the multiple temperature sensors respectively, and controlling a valve opening degree of the flow regulating valve and the cooling liquid temperature according to a comparison result of the first temperature, the second temperature and a preset threshold value. The system can accurately regulate the cooling liquid flow and temperature used in cooling and heat exchange.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cooling and heat exchange of electric aerial vehicles, and in particular to a cooling and heat exchange system and method for electric aerial vehicles, a cooling device controller, a computer readable storage medium and a computer program product. BACKGROUND

[0002] The three key components of new energy electric aerial vehicles include a three-electric system composed of a power battery, a motor and a motor controller. Among them, the power battery is the energy source of all devices, providing power for the motor controller and the motor. The motor controller receives the instructions of the upper computer and delivers the required power to the motor. The motor obtains the instructions and power and outputs the specified speed and torque, and converts it into thrust through the ducted fan to push the electric aerial vehicle to fly. In the whole process from battery power supply to motor converting electric energy into mechanical energy, the three-electric system inevitably generates heat loss. The main reasons for these heat losses are: the resistance at the current passing position in the three-electric system will generate heat; the internal electronic elements of the motor controller will generate energy loss when working, which will be released in the form of heat energy; the internal friction or collision of the motor stator and rotor will also generate heat loss.

[0003] These heat losses will inevitably cause the three-electric system to heat up or even overheat, which will harm the use of the battery, the motor and the motor controller, which can be manifested as follows: overheat will reduce the performance of the battery, affect the endurance mileage of the electric aerial vehicle, and reduce the safety performance and service life of the battery. Severe heat focusing may lead to thermal runaway, especially in the absence of heat dissipation settings. The main effects of overheat on the motor are: demagnetization of the magnet, reduction of motor efficiency, reduction of motor life, performance degradation, deformation of mechanical parts, etc., which seriously affect the flight safety of the aerial vehicle. In addition, as the temperature rises, the motor controller will have problems such as efficiency reduction, unstable operation, increased power consumption, etc., affecting the control quality of the control loop.

[0004] Therefore, it is necessary to cool the electric aerial vehicle. The existing electric aerial vehicles generally use air cooling or forced liquid cooling for cooling. However, the existing cooling methods cannot accurately control the cooling process, and the cold air or cooling liquid or the heat exchanger directly flowing through the three-electric system cannot adjust the flow, which is a passive heat exchange mechanism. Moreover, since the existing cooling method cannot adjust the flow, in the specific working condition of high altitude and extremely low temperature, the temperature of the on-board equipment may be too low, exceeding its optimal working temperature range. At the same time, in order to ensure the heat exchange flow, the pump source needs to be continuously operated at the maximum power, which consumes a lot of electric energy of the aerial vehicle unnecessarily.

[0005] Therefore, it is necessary to provide a cooling and heat exchange scheme for an electric aerial vehicle with adjustable flow. SUMMARY

[0006] Based on this, it is necessary to provide a cooling heat exchange system, method, cooling device controller, computer readable storage medium and computer program product of an electric aerial vehicle capable of adjusting the flow of cooling liquid to solve the above technical problems.

[0007] In a first aspect, the present application provides a cooling heat exchange system of an electric aerial vehicle, comprising a cooling liquid tank, a flow regulating valve, a cooling device controller and a plurality of temperature sensors.

[0008] The cooling liquid tank is configured to provide cooling liquid to a cooled device.

[0009] The flow regulating valve is configured to output a cooling liquid flow matching a current valve opening degree to the cooled device.

[0010] The cooling device controller is electrically connected to the cooling liquid tank, the flow regulating valve and the plurality of temperature sensors, respectively. The plurality of temperature sensors are arranged at the cooling liquid tank, the cooled device and a liquid supply pipeline between the flow regulating valve and the cooled device, respectively.

[0011] The cooling device controller is configured to acquire a cooling liquid temperature in the cooling liquid tank, a first temperature of the cooled device and a second temperature of the cooling liquid input into the cooled device from the plurality of temperature sensors, respectively, and control a valve opening degree of the flow regulating valve and the cooling liquid temperature according to a comparison result of the first temperature, the second temperature and a preset threshold value.

[0012] In one embodiment, the preset threshold value includes a lower temperature threshold value.

[0013] The cooling device controller is configured to control the valve opening degree of the flow regulating valve and the cooling liquid temperature according to the comparison result of the first temperature, the second temperature and the preset threshold value, comprising:

[0014] The cooling device controller is configured to:

[0015] determine a first comparison result between the first temperature, the second temperature and the lower temperature threshold value;

[0016] in a case where the first comparison result meets a first preset condition, control the valve opening degree of the flow regulating valve to increase;

[0017] in a case where the first comparison result meets a second preset condition, control the valve opening degree of the flow regulating valve to decrease to zero and reduce the cooling liquid temperature;

[0018] in a case where the first comparison result meets a third preset condition, controlling the valve opening degree of the flow regulating valve to reduce to zero and increasing the coolant temperature;

[0019] in a case where the first comparison result meets a fourth preset condition, controlling the valve opening degree of the flow regulating valve to increase and increasing the coolant temperature.

[0020] In one of the embodiments, the preset threshold value comprises a temperature upper limit threshold value;

[0021] The cooling device controller is configured to control the valve opening degree of the flow regulating valve and the coolant temperature according to a comparison result of the first temperature, the second temperature and a preset threshold value, comprising:

[0022] The cooling device controller is configured to:

[0023] determine a second comparison result among the first temperature, the second temperature and a temperature upper limit threshold value;

[0024] in a case where the second comparison result meets a fifth preset condition, controlling the valve opening degree of the flow regulating valve to increase to a preset opening degree threshold value and decreasing the coolant temperature;

[0025] in a case where the second comparison result meets a sixth preset condition, controlling the valve opening degree of the flow regulating valve to increase to a preset opening degree threshold value;

[0026] in a case where the second comparison result meets a seventh preset condition, controlling the valve opening degree of the flow regulating valve to reduce to zero and decreasing the coolant temperature;

[0027] in a case where the second comparison result meets an eighth preset condition, controlling the valve opening degree of the flow regulating valve to increase;

[0028] in a case where the second comparison result meets a ninth preset condition, controlling the valve opening degree of the flow regulating valve to reduce to zero.

[0029] In one of the embodiments, the cooling heat exchange system further comprises a pressure pump:

[0030] The pressure pump is configured to pressurize the coolant;

[0031] The cooling device controller is electrically connected with the pressure pump, and the cooling device controller is further configured to, in a case where it is detected that the valve opening degree of the flow regulating valve reduces to zero, control the operating power of the pressure pump to reduce to a preset safe power.

[0032] In one of the embodiments, the flow regulating valve comprises an internal valve and a shell, a coolant inlet, a coolant return outlet and a coolant supply outlet;

[0033] The flow regulating valve is used to receive the coolant through the coolant inlet, and to divert the coolant to the supply outlet based on the opening between the valve and the housing, and then output the coolant to the cooled equipment through the supply outlet. The remaining coolant after diversion is returned to the coolant tank through the return outlet.

[0034] The cooling device controller is used to determine the size of the opening based on the comparison result of the first temperature, the second temperature and a preset threshold, convert the size of the opening into the linear displacement of the valve inside the housing, and control the valve to move according to the linear displacement to adjust the valve opening of the flow regulating valve.

[0035] In one embodiment, the cooling heat exchange system further includes a filter disposed on the return line of the coolant returning to the coolant tank;

[0036] The filter is used to filter the coolant to be returned to the coolant tank.

[0037] Secondly, this application also provides a cooling heat exchange method for an electric aircraft, comprising:

[0038] The temperature of the coolant in the coolant tank, the first temperature of the cooled equipment, and the second temperature at which the coolant is input to the cooled equipment are obtained from multiple temperature sensors.

[0039] Based on the comparison results of the first temperature, the second temperature and the preset threshold, the valve opening of the flow regulating valve and the temperature of the coolant are controlled.

[0040] Thirdly, this application also provides a cooling device controller. The cooling device controller includes a memory and a processor, the memory storing a computer program, and the processor executing the computer program to implement the cooling and heat exchange method for the electric aircraft described in any of the embodiments of the second aspect above.

[0041] Fourthly, this application also provides a computer-readable storage medium. The computer-readable storage medium stores a computer program thereon, which, when executed by a processor, implements the cooling and heat exchange method for the electric aircraft described in any of the embodiments of the second aspect above.

[0042] Fifthly, this application also provides a computer program product. The computer program product includes a computer program that, when executed by a processor, implements the cooling and heat exchange method for an electric aircraft as described in any of the embodiments of the second aspect above.

[0043] The aforementioned cooling and heat exchange system, method, cooling device controller, computer-readable storage medium, and computer program product for electric aircraft, by installing temperature sensors at the coolant tank, the cooled equipment, and the supply pipeline between the flow regulating valve and the cooled equipment, and by electrically connecting the cooling device controller to the coolant tank, the flow regulating valve, and multiple temperature sensors, respectively, acquires the coolant temperature in the coolant tank, the first temperature of the cooled equipment, and the second temperature of the coolant input to the cooled equipment from the multiple temperature sensors, and controls the valve opening of the flow regulating valve and the coolant temperature based on the comparison results of the first temperature, the second temperature, and a preset threshold, can achieve closed-loop temperature regulation based on actual temperature sampling results, accurately control the coolant flow rate and coolant temperature during the cooling and heat exchange process, and improve the utilization rate of coolant and the cooling effect. Attached Figure Description

[0044] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the description of the embodiments of this application or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0045] Figure 1 This is a structural block diagram of the cooling and heat exchange system of an electric aircraft vehicle in one embodiment;

[0046] Figure 2 This is a structural block diagram of a flow control valve in one embodiment;

[0047] Figure 3 This is a structural block diagram of the cooling heat exchange system of an electric aircraft in another embodiment;

[0048] Figure 4 This is a schematic flowchart of a cooling and heat exchange method for an electric aircraft in one embodiment;

[0049] Figure 5 This is an internal structural diagram of the cooling device controller in one embodiment. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0051] It should be noted that the terms "comprising" and "having" and any variations thereof used herein are intended to cover a non-exclusive inclusion, can be one of the schemes or any combination of multiple schemes. The term "multiple" used herein refers to two or more. The term "arrangement" used herein refers to placement, attachment, installation, etc. in a region such as the surface of an element or inside an element. The term "electrically connected" used herein refers to the transfer of electrical signals or data between the circuits, modules, units, etc. connected to each other. The data (including but not limited to data for analysis, stored data, displayed data, etc.) involved in the present application is all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of related data need to comply with relevant regulations.

[0052] In one exemplary embodiment, as shown in Figure 1 A cooling and heat exchange system of an electric aerial vehicle is provided, including a cooling liquid tank 102, a flow regulating valve 104, a cooling device controller 106, and a plurality of temperature sensors 108, for cooling and heat exchange of a cooled device 110 in the electric aerial vehicle.

[0053] The cooling liquid tank 102 can be used to store cooling liquid and provide cooling liquid for cooling and heat exchange of the cooled device 110. The cooling liquid can be alcohol-based cooling liquid, glycerol-based cooling liquid, or ethylene glycol-based cooling liquid, etc. Optionally, in some embodiments, the cooling liquid in the cooling liquid tank 102 can be pumped into the flow regulating valve 104 by pressurization. Optionally, in some embodiments, the cooling liquid tank 102 can also be connected with a heat exchange device, and the cooling device controller 106 can indirectly adjust the cooling liquid temperature by changing the temperature of the heat exchange device.

[0054] The flow regulating valve 104 is a flow-adjustable device, which can be used to output a cooling liquid flow matching the current valve opening to the cooled device 110. When the valve opening of the flow regulating valve 104 changes, the cooling liquid flow output by the flow regulating valve 104 to the cooled device 110 will also change accordingly. Optionally, in some embodiments, the flow regulating valve 104 can be an electrically controlled flow regulating valve.

[0055] The cooling device controller 106 can be used to represent a control device with analysis and calculation capabilities. The cooling device controller 106 can be electrically connected with the cooling liquid tank 102, the flow regulating valve 104, and the plurality of temperature sensors 108, respectively. The cooling device controller 106 can be used to receive temperature signals collected by the plurality of temperature sensors 108, analyze and calculate the temperature signals based on a preset threshold, and generate control instructions for controlling the valve opening of the flow regulating valve 104 and control instructions for controlling the cooling liquid temperature.

[0056] The temperature sensor 108 can be used to collect temperature signals. Multiple temperature sensors 108 can be respectively arranged at the cooling liquid tank 102, the cooled equipment 110, and the liquid supply pipeline between the flow regulating valve 104 and the cooled equipment 110 (for example, near the liquid inlet of the cooled equipment 110). Optionally, in some embodiments, the temperature sensor 108 arranged at the cooled equipment 110 can also be a temperature sensor provided by the cooled equipment 110 itself.

[0057] The cooled equipment 110 can include one or more of, but not limited to, an electric motor, a motor controller, a battery, and the like of an electric aerial vehicle.

[0058] Exemplarily, the cooling liquid provided by the cooling liquid tank 102 flows counterclockwise in the pipeline according to the arrow direction shown in the figure. After the cooling liquid enters the flow regulating valve 104, only the cooling liquid flow matching the current valve opening degree of the flow regulating valve 104 can enter the cooled equipment 110 through the flow regulating valve 104. After the cooling liquid enters the cooled equipment 110, the cooling liquid can exchange heat with the cooled equipment 110 through contact heat exchange or indirect contact heat exchange, so as to change the temperature of the cooled equipment 110.

[0059] The cooling device controller 106 can sample each temperature sensor 108 every preset period (for example, 500 milliseconds), obtain the temperature of the cooling liquid in the cooling liquid tank 102 from the temperature sensor 108 arranged at the cooling liquid tank 102, obtain the temperature of the cooled equipment 110 as a first temperature from the temperature sensor 108 arranged at the cooled equipment 110, and obtain the temperature of the cooling liquid input into the cooled equipment 110 as a second temperature from the temperature sensor 108 arranged at the liquid supply pipeline.

[0060] The cooling device controller 106 can store preset threshold values corresponding to the maximum allowable temperature and the minimum allowable temperature of the electric aerial vehicle. The first temperature, the second temperature, and the preset threshold values are compared. According to the comparison results of the first temperature, the second temperature, and the preset threshold values, corresponding control logic is executed to control the valve opening degree of the flow regulating valve 104 and the temperature of the cooling liquid.

[0061] The cooling and heat exchange system of the electric aerial vehicle described above can realize temperature closed-loop regulation based on actual temperature sampling results, accurately control the cooling liquid flow and the temperature of the cooling liquid in the cooling and heat exchange process, and improve the utilization rate and cooling effect of the cooling liquid, by arranging temperature sensors at multiple positions, and using the cooling device controller to control the valve opening degree of the flow regulating valve and the temperature of the cooling liquid based on the cooling liquid temperature, the cooled equipment temperature, and the temperature of the cooling liquid input into the cooled equipment in combination with the preset threshold values.

[0062] In one example embodiment, the preset threshold can include a temperature lower limit threshold. The temperature lower limit threshold can be used to represent a minimum allowable temperature of the electric aerial vehicle.

[0063] The cooling device controller 106 is specifically configured to determine a first comparison result between the first temperature, the second temperature, and the temperature lower limit threshold. In a case where the first comparison result satisfies a first preset condition, the cooling device controller 106 controls the valve opening degree of the flow regulating valve to increase. In a case where the first comparison result satisfies a second preset condition, the cooling device controller 106 controls the valve opening degree of the flow regulating valve to decrease to zero and reduces the coolant temperature. In a case where the first comparison result satisfies a third preset condition, the cooling device controller 106 controls the valve opening degree of the flow regulating valve to decrease to zero and increases the coolant temperature. In a case where the first comparison result satisfies a fourth preset condition, the cooling device controller 106 controls the valve opening degree of the flow regulating valve to increase and increases the coolant temperature.

[0064] Optionally, in some embodiments, the first preset condition can be that the first comparison result is that the first temperature is greater than the second temperature and the second temperature is greater than the temperature lower limit threshold. Alternatively, in other embodiments, the first preset condition can also be that the first comparison result is that the first temperature is greater than the temperature lower limit threshold and the temperature lower limit threshold is greater than the second temperature. In a case where any of the above first preset conditions is satisfied, since the first temperature of the cooled equipment 110 is greater than the second temperature of the coolant input into the cooled equipment 110, and the first temperature of the cooled equipment 110 is greater than the minimum allowable temperature of the electric aerial vehicle, it is necessary to increase the coolant flow to improve the heat exchange efficiency of the cooled equipment 110. Therefore, the cooling device controller 106 can control the valve opening degree of the flow regulating valve 104 to increase in a case where the first comparison result satisfies the first preset condition, so that more coolant input into the cooled equipment 110 participates in the cooling heat exchange.

[0065] Optionally, in some embodiments, the second preset condition can be that the first comparison result is that the second temperature is greater than the first temperature and the first temperature is greater than the temperature lower limit threshold. Alternatively, in other embodiments, the second preset condition can also be that the first comparison result is that the second temperature is greater than the temperature lower limit threshold and the temperature lower limit threshold is greater than the first temperature. Since in a case where the second preset condition is satisfied, the first temperature of the cooled equipment 110 is less than the second temperature of the coolant input into the cooled equipment 110, it is necessary to stop inputting the coolant and reduce the coolant temperature to avoid the temperature of the cooled equipment 110 from further decreasing. Therefore, the cooling device controller 106 can control the valve opening degree of the flow regulating valve 104 to decrease to zero to make the valve of the flow regulating valve 104 completely closed and reduce the coolant temperature in a case where the first comparison result satisfies the second preset condition.

[0066] Optionally, in some embodiments, the third preset condition can be that the first comparison result is that the temperature lower limit threshold is greater than the first temperature and the first temperature is greater than the second temperature. Since the first temperature of the cooled device 110 is lower than the minimum allowable temperature of the electric aircraft at this time, it is necessary to stop inputting the coolant, and the first temperature of the cooled device 110 is still higher than the second temperature of the coolant input into the cooled device 110, and it is necessary to increase the temperature of the coolant. Therefore, the cooling device controller 106 can control the valve opening of the flow regulating valve 104 to be reduced to zero so that the valve of the flow regulating valve 104 is completely closed and the temperature of the coolant is increased when the first comparison result satisfies the third preset condition.

[0067] Optionally, in some embodiments, the fourth preset condition can be that the first comparison result is that the temperature lower limit threshold is greater than the second temperature and the second temperature is greater than the first temperature. Since the first temperature of the cooled device 110 is lower than the second temperature of the coolant input and the minimum allowable temperature of the electric aircraft at this time, it is necessary to increase the temperature of the cooled device 110. Therefore, the cooling device controller 106 can control the valve opening of the flow regulating valve 104 to be increased and the temperature of the coolant to be increased so that more heated coolant is input into the cooled device 110 to increase the temperature of the cooled device 110 and avoid the cooled device 110 from running failure under the working condition of too low temperature when the first comparison result satisfies the fourth preset condition.

[0068] In an exemplary embodiment, the preset threshold value can include a temperature upper limit threshold value. The temperature upper limit threshold value can be used to represent the maximum allowable temperature of the electric aircraft.

[0069] The cooling device controller 106 is specifically configured to determine a second comparison result between the first temperature, the second temperature, and the temperature upper limit threshold value. When the second comparison result satisfies a fifth preset condition, the valve opening of the flow regulating valve is controlled to be increased to a preset opening threshold value, and the temperature of the coolant is reduced. When the second comparison result satisfies a sixth preset condition, the valve opening of the flow regulating valve is controlled to be increased to the preset opening threshold value. When the second comparison result satisfies a seventh preset condition, the valve opening of the flow regulating valve is controlled to be reduced to zero and the temperature of the coolant is reduced. When the second comparison result satisfies an eighth preset condition, the valve opening of the flow regulating valve is controlled to be increased. When the second comparison result satisfies a ninth preset condition, the valve opening of the flow regulating valve is controlled to be reduced to zero.

[0070] Optionally, in some embodiments, the fifth preset condition can be that the second comparison result is that the first temperature is greater than the second temperature and the second temperature is greater than the temperature upper limit threshold. Since the first temperature of the cooled equipment 110 exceeds the maximum allowable temperature of the electric aircraft and the second temperature of the cooling liquid input also exceeds the maximum allowable temperature of the electric aircraft, it is necessary to reduce the temperature of the cooling liquid and increase the flow of the cooling liquid input to the cooled equipment 110. Therefore, the cooling device controller 106 can control the valve opening of the flow regulating valve 104 to increase to the preset opening threshold (i.e. the maximum opening value) and reduce the temperature of the cooling liquid when the second comparison result satisfies the fifth preset condition. Optionally, in other embodiments, the operating power of the cooled equipment 110 can also be reduced to speed up the cooling speed of the cooled equipment 110 when the second comparison result satisfies the fifth preset condition.

[0071] Optionally, in some embodiments, the sixth preset condition can be that the second comparison result is that the first temperature is greater than the temperature upper limit threshold and the temperature upper limit threshold is greater than the second temperature. Since the first temperature of the cooled equipment 110 exceeds the maximum allowable temperature of the electric aircraft at this time, and the second temperature of the cooling liquid input is lower than the maximum allowable temperature of the electric aircraft, the cooling speed of the cooled equipment 110 can be accelerated by increasing the input flow of the cooling liquid. Therefore, the cooling device controller 106 can control the valve opening of the flow regulating valve 104 to increase to the preset opening threshold (i.e. the maximum opening value) when the second comparison result satisfies the sixth preset condition. Optionally, in other embodiments, the pressure intensity of the cooling liquid can also be increased when the second comparison result satisfies the sixth preset condition, so as to speed up the input of the cooling liquid to the cooled equipment 110 and increase the flow of the cooling liquid input to the flow regulating valve 104.

[0072] Optionally, in some embodiments, the seventh preset condition can be that the second comparison result is that the second temperature is greater than the first temperature and the first temperature is greater than the temperature upper limit threshold. Since the second temperature of the cooling liquid input and the first temperature of the cooled equipment 110 both exceed the maximum allowable temperature of the electric aircraft, it is necessary to reduce the temperature of the cooling liquid and prevent the high-temperature cooling liquid from being in heat exchange with the cooled equipment 110 again. Therefore, the cooling device controller 106 can control the valve opening of the flow regulating valve 104 to decrease to zero to close the flow regulating valve 104 and reduce the temperature of the cooling liquid when the second comparison result satisfies the seventh preset condition. Optionally, in some embodiments, the operating power of the cooled equipment 110 can also be reduced to speed up the cooling speed of the cooled equipment 110.

[0073] Optionally, in some embodiments, the seventh preset condition can be that the second comparison result is that the second temperature is greater than the temperature upper threshold and the temperature upper threshold is greater than the first temperature. Since the second temperature of the cooling liquid input is too high at this time, the cooling device controller 106 can control the valve opening of the flow regulating valve 104 to be reduced to zero to close the flow regulating valve 104, and reduce the temperature of the cooling liquid.

[0074] Optionally, in some embodiments, the eighth preset condition can be that the second comparison result is that the temperature upper threshold is greater than the first temperature and the first temperature is greater than the second temperature. At this time, the first temperature of the cooled device 110 is still higher than the second temperature of the cooling liquid input, and therefore the cooling device controller 106 can control the valve opening of the flow regulating valve 104 to be increased, or can also maintain the current valve opening, to ensure that the cooling liquid input is cooled by the cooled device 110.

[0075] Optionally, in some embodiments, the ninth preset condition can be that the second comparison result is that the temperature upper threshold is greater than the second temperature and the second temperature is greater than the first temperature. At this time, since the second temperature of the cooling liquid input is higher than the first temperature of the cooled device 110, it is necessary to stop inputting high-temperature cooling liquid to the cooled device 110. Therefore, the cooling device controller 106 can control the valve opening of the flow regulating valve 104 to be reduced to zero to close the flow regulating valve 104.

[0076] In the above embodiments, by using the cooling device controller 106 to perform different cooling heat exchange operations based on the comparison result of the first temperature of the cooled device 110, the second temperature of the cooling liquid input, the temperature upper threshold and the temperature lower threshold, and controlling the valve opening of the flow regulating valve or the temperature of the cooling liquid, the flexibility of the cooling heat exchange can be improved, and the cooling heat exchange demand under various working conditions can be met.

[0077] In an exemplary embodiment, the cooling heat exchange system of the electrically-powered aerial vehicle can further include a pressure pump.

[0078] The pressure pump can be used to pressurize the cooling liquid, so that the pressurized cooling liquid is pumped into the flow regulating valve 104. Optionally, in some embodiments, the cooling device controller 106 can increase the speed of the pressure pump to increase the pressurization intensity of the cooling liquid when the second comparison result meets the sixth preset condition.

[0079] For example, the cooling device controller 106 can be electrically connected to the pressure pump. The cooling device controller 106 can also be used to control the operating power of the pressure pump to decrease to a preset safe power (i.e., the minimum power for stable operation of the pressure pump) when it detects that the valve opening of the flow regulating valve 104 has decreased to zero. That is, as the valve opening of the flow regulating valve 104 gradually decreases, the operating power of the pressure pump gradually decreases. Until the flow regulating valve 104 is completely closed, the pressure pump operates at the minimum preset safe power to reduce power consumption.

[0080] In this embodiment, by reducing the operating power of the pressure pump during the process of reducing the valve opening of the flow regulating valve 104 to zero, the power consumption of the cooling device pressure pump can be reduced when the cooled equipment is not exchanging heat, thereby reducing the power consumption of the airborne battery.

[0081] In one exemplary embodiment, the flow control valve 104 includes an internal valve and housing, a coolant inlet, a return outlet, and a supply outlet. The flow control valve 104 is connected to the coolant tank 102 via a return line.

[0082] For example, such as Figure 2 As shown, the flow regulating valve 104 receives coolant through the coolant inlet 202, and diverts the coolant to the supply outlet 208 based on the opening between the valve 204 and the housing 206, and then outputs it to the cooled device 110 through the supply outlet 208. The remaining coolant after diversion returns to the coolant tank 102 through the return outlet 210. That is, the flow regulating valve 104 controls the flow rate through the opening between the valve 204 and the housing 206, which is the flow rate of coolant entering the supply outlet 208. The opening size can be converted into the linear displacement of the valve 204 inside the housing 206. For example, if the valve 204 moves backward, the opening becomes smaller; if the valve 204 moves forward, the opening becomes larger.

[0083] The cooling device controller 106 can refer to the valve opening control method described in the above embodiments, determine the size of the opening between the corresponding valve 204 and the housing 206 based on the comparison result of the first temperature, the second temperature and the preset threshold, convert the size of the opening into the linear displacement of the valve 204 inside the housing 206 based on the preset data processing logic, and control the valve 204 to move according to the linear displacement to adjust the valve opening of the flow regulating valve 104.

[0084] Optionally, in some embodiments, the movement of the valve 204 can be controlled by a screw connected to the tail of the valve 204 outside the housing 206. The screw can be connected to a micro motor. The cooling device controller 106 can control the valve 204 to move forward or backward inside the housing 206 by controlling the forward or reverse rotation of the micro motor, thereby adjusting the valve opening of the flow regulating valve 104.

[0085] In the embodiment, the valve opening degree of the flow regulating valve 104 is adjusted by the linear displacement of the valve 204 inside the housing 206, which can simplify the complex flow control logic into the linear displacement control of the valve, thereby improving the valve control accuracy and reducing the data operation amount of the cooling device controller 106.

[0086] In an exemplary embodiment, the cooling heat exchange system of the electric aerial vehicle can further include a filter. The filter can be arranged on the return liquid pipeline of the cooling liquid returning to the cooling liquid tank. The filter can be used to filter the cooling liquid to be returned to the cooling liquid tank 102. Alternatively, in some embodiments, the cooling liquid filtered by the filter can include the cooling liquid output by the flow regulating valve 104 through the return liquid outlet and the cooling liquid output after the cooling heat exchange with the cooled equipment 110.

[0087] In the embodiment, by arranging the filter to filter the cooling liquid before entering the cooling liquid tank 102, the utilization rate of the cooling liquid can be improved, and the cooling liquid tank 102 can be prevented from entering impurities.

[0088] In an exemplary embodiment, as shown in Figure 3 A cooling heat exchange system of the electric aerial vehicle is also provided, which includes a cooling liquid tank 102, a pressure pump 302, a flow regulating valve 104, a cooling device controller 106, temperature sensors 108, cooled equipment 110, and a filter 304.

[0089] Exemplarily, the pressure pump 302 can be driven by a motor. The pressure pump 302 can pump the cooling liquid in the cooling liquid tank 102 into the flow regulating valve 104. The flow regulating valve 104 can control the flow of the cooling liquid input into the cooled equipment 110 through the opening between the internal valve and the housing, and the cooling liquid not input into the cooled equipment 110 will enter the filter 304 through the return liquid outlet. The cooling liquid after the cooling heat exchange with the cooled equipment 110 also enters the filter 304. The filter 304 filters the cooling liquid and inputs the filtered cooling liquid into the cooling liquid tank 102.

[0090] The cooling device controller 106 can obtain the cooling liquid temperature, the first temperature of the cooled equipment 110, and the second temperature of the cooling liquid input into the cooled equipment 110 from each temperature sensor 108, respectively. The first temperature, the second temperature, the upper temperature threshold, and the lower temperature threshold are compared. Referring to the control logic of the valve opening degree and the cooling liquid temperature provided in the above embodiments, based on the preset condition satisfied by the first comparison result between the first temperature and the lower temperature threshold / the second comparison result between the first temperature and the upper temperature threshold, the corresponding control operation is performed to realize the accurate adjustment of the valve opening degree of the flow regulating valve 104 and the cooling liquid temperature.

[0091] In this embodiment, the flow control in the airborne heat exchange pipeline can be realized by adjusting the valve opening degree of the flow regulating valve 104 based on the temperature, the temperature control in the airborne heat exchange pipeline can be realized by adjusting the coolant temperature based on the temperature, and the operating power of the pressure pump can be gradually reduced by gradually reducing the valve opening degree of the flow regulating valve 104 to zero, so as to reduce the consumption of the airborne power energy. By adjusting the valve opening degree of the flow regulating valve 104 in the form of motor control, the response speed and the position control accuracy can be improved, and the cleanliness of the coolant in the cooling circuit can be ensured by the filter.

[0092] In one example embodiment, as shown in Figure 4 A cooling heat exchange method of an electric aerial vehicle is provided, which is applied to the cooling device controller 106 in the above embodiments, and includes the following steps S402 to S404. Wherein:

[0093] Step S402, acquiring the coolant temperature in the coolant tank, the first temperature of the cooled equipment, and the second temperature of the coolant input into the cooled equipment from the plurality of temperature sensors, respectively.

[0094] Step S404, controlling the valve opening degree of the flow regulating valve and the coolant temperature according to the comparison result of the first temperature, the second temperature, and the preset threshold value.

[0095] The specific implementation of steps S402 and S404 can be realized by referring to the control logic of the cooling heat exchange system of the electric aerial vehicle provided in the above embodiments, which will not be repeated here.

[0096] In one example embodiment, the preset threshold value includes a temperature lower limit threshold value. Step S404 can further include: determining a first comparison result between the first temperature, the second temperature, and the temperature lower limit threshold value; increasing the valve opening degree of the flow regulating valve when the first comparison result meets a first preset condition; reducing the valve opening degree of the flow regulating valve to zero and reducing the coolant temperature when the first comparison result meets a second preset condition; reducing the valve opening degree of the flow regulating valve to zero and increasing the coolant temperature when the first comparison result meets a third preset condition; increasing the valve opening degree of the flow regulating valve and increasing the coolant temperature when the first comparison result meets a fourth preset condition.

[0097] In an exemplary embodiment, the preset threshold comprises a temperature upper limit threshold. Step S404 can further comprise: determining a second comparison result between the first temperature, the second temperature and the temperature upper limit threshold; in a case where the second comparison result satisfies a fifth preset condition, controlling the valve opening degree of the flow regulating valve to increase to a preset opening degree threshold to reduce the coolant temperature; in a case where the second comparison result satisfies a sixth preset condition, controlling the valve opening degree of the flow regulating valve to increase to the preset opening degree threshold; in a case where the second comparison result satisfies a seventh preset condition, controlling the valve opening degree of the flow regulating valve to decrease to zero and reduce the coolant temperature; in a case where the second comparison result satisfies an eighth preset condition, controlling the valve opening degree of the flow regulating valve to increase; in a case where the second comparison result satisfies a ninth preset condition, controlling the valve opening degree of the flow regulating valve to decrease to zero.

[0098] In an exemplary embodiment, the cooling heat exchange method of the electric aviation vehicle further comprises: in a case where it is detected that the valve opening degree of the flow regulating valve decreases to zero, controlling the operating power of the pressure pump to decrease to a preset safety power.

[0099] In an exemplary embodiment, step S404 can further comprise: determining the size of the opening between the valve and the shell of the flow regulating valve according to the comparison result of the first temperature, the second temperature and the preset threshold, converting the size of the opening into a linear displacement of the valve in the shell, and controlling the valve to move according to the linear displacement to adjust the valve opening degree of the flow regulating valve.

[0100] In an exemplary embodiment, the cooling heat exchange method of the electric aviation vehicle further comprises: filtering the coolant to be returned to the coolant tank.

[0101] It should be understood that, although each step in the flowchart involved in each of the above embodiments is shown in sequence according to the direction of the arrow, these steps are not necessarily executed in the order indicated by the arrow. Unless otherwise specified herein, the execution of these steps is not strictly limited in sequence, and these steps can be executed in other orders. Moreover, as described above, at least part of the steps in the flowchart involved in each of the above embodiments can comprise multiple steps or stages, which are not necessarily executed at the same time, but can be executed at different times, and the execution sequence of these steps or stages is not necessarily sequential, but can be executed in rotation or alternation with at least part of other steps or stages. It can be understood that the steps in different embodiments can be freely combined as needed, and various non-contradictory schemes formed by the combination are within the scope of protection of the present application.

[0102] Based on the same inventive concept, the embodiment of the present application further provides a cooling device controller, comprising a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to realize the steps in the above method embodiments.

[0103] In an exemplary embodiment, a cooling device controller is provided, which can be a computer device, and its internal structure diagram can be as shown in Figure 5 The cooling device controller comprises a processor, a memory, an input / output interface (I / O) and a communication interface. The processor, the memory and the input / output interface are connected through a system bus, and the communication interface is connected to the system bus through the input / output interface. The processor of the cooling device controller is configured to provide computing and control capabilities. The memory of the cooling device controller comprises a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operating system and the computer program in the non-volatile storage medium to run. The database of the cooling device controller is configured to store data such as the temperature of the cooling liquid, the first temperature of the cooled device, the second temperature of the cooling liquid input into the cooled device and the preset threshold value. The input / output interface of the cooling device controller is configured to exchange information between the processor and external devices. The communication interface of the cooling device controller is configured to communicate with external terminals through network connection. The computer program is executed by the processor to realize a cooling and heat exchange method of an electric aerial vehicle.

[0104] Each module in the above cooling device controller can be realized by software, hardware and a combination thereof in whole or in part. Each module can be embedded in or independent of the processor in the cooling device controller in hardware form, or stored in the memory in the cooling device controller in software form, so as to be called and executed by the processor to perform the operations corresponding to each module.

[0105] Those skilled in the art can understand that Figure 5 The structure shown in the above figure is only a block diagram of part of the structure related to the scheme of the present application, and does not constitute a limitation on the cooling device controller to which the scheme of the present application is applied. The specific cooling device controller can comprise more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0106] In an exemplary embodiment, a computer readable storage medium is provided, which stores a computer program, and the computer program is executed by a processor to realize the steps in the above method embodiments.

[0107] In an example embodiment, a computer program product is provided, including a computer program which, when executed by a processor, implements the steps of any of the above method embodiments.

[0108] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing related hardware through a computer program. The computer program can be stored in a non-volatile computer readable storage medium, and when executed, can include the processes of the above-mentioned method embodiments. Any reference to a memory, database or other medium used in the embodiments provided in the present application can include at least one of a non-volatile memory and a volatile memory. The non-volatile memory can include a read-only memory (ROM), a magnetic tape, a floppy disk, a flash memory, an optical storage, a high-density embedded non-volatile memory, a resistive random access memory (ReRAM), a magnetoresistive random access memory (MRAM), a ferroelectric random access memory (FRAM), a phase change memory (PCM), a graphene memory, etc. The volatile memory can include a random access memory (RAM) or an external cache memory, etc. As an illustration but not limitation, the RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM), etc. The database involved in the embodiments provided in the present application can include at least one of a relational database and a non-relational database. The non-relational database can include a distributed database based on a block chain, etc., without being limited thereto. The processor involved in the embodiments provided in the present application can be a general processor, a central processing unit, a graphics processing unit, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, an artificial intelligence (AI) processor, etc., without being limited thereto.

[0109] The technical features of the above embodiments can be combined in any manner. To make the description concise, not all possible combinations of the technical features in the above embodiments are described, but as long as the combinations of the technical features do not exist contradictions, they should be considered as the scope of the present application.

[0110] The above-described embodiments are merely illustrative of several embodiments of the present application, and the description is relatively specific and detailed, but should not be understood as a limitation on the scope of the patent. It should be noted that for those skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the scope of the present application. Therefore, the scope of protection of the present application should be subject to the appended claims.

Claims

1. A cooling heat exchange system for an electrically powered aerial vehicle, the system comprising: The cooling heat exchange system comprises a cooling liquid tank, a flow regulating valve, a cooling device controller and a plurality of temperature sensors; The cooling liquid tank is configured to provide cooling liquid to a cooled device; The flow regulating valve is configured to output a cooling liquid flow matching a current valve opening degree to the cooled device; The cooling device controller is electrically connected to the cooling liquid tank, the flow regulating valve and the plurality of temperature sensors respectively, and the plurality of temperature sensors are arranged at the cooling liquid tank, the cooled device and a liquid supply pipeline between the flow regulating valve and the cooled device respectively; The cooling device controller is configured to acquire a cooling liquid temperature in the cooling liquid tank, a first temperature of the cooled device and a second temperature of the cooling liquid input into the cooled device from the plurality of temperature sensors respectively, and control a valve opening degree of the flow regulating valve and the cooling liquid temperature according to a comparison result of the first temperature, the second temperature and a preset threshold value; The preset threshold value comprises a temperature lower limit threshold value, and the temperature lower limit threshold value is configured to represent a minimum allowable temperature of an electrically-powered aerial vehicle; The cooling device controller is further configured to control the valve opening degree of the flow regulating valve to decrease to zero and increase the cooling liquid temperature when the temperature lower limit threshold value is greater than the first temperature and the first temperature is greater than the second temperature; The cooling device controller is further configured to control the valve opening degree of the flow regulating valve to increase and increase the cooling liquid temperature when the temperature lower limit threshold value is greater than the second temperature and the second temperature is greater than the first temperature; The cooling device controller is further configured to control the valve opening degree of the flow regulating valve to increase when the first temperature is greater than the second temperature and the second temperature is greater than the temperature lower limit threshold value, or the first temperature is greater than the temperature lower limit threshold value and the temperature lower limit threshold value is greater than the second temperature; The cooling device controller is further configured to control the valve opening degree of the flow regulating valve to decrease to zero and decrease the cooling liquid temperature when the second temperature is greater than the first temperature and the first temperature is greater than the temperature lower limit threshold value, or the second temperature is greater than the temperature lower limit threshold value and the temperature lower limit threshold value is greater than the first temperature; The preset threshold value comprises a temperature upper limit threshold value, and the temperature upper limit threshold value is configured to represent a maximum allowable temperature of the electrically-powered aerial vehicle; The cooling device controller is further configured to control the valve opening degree of the flow regulating valve to increase to a preset opening degree threshold value and decrease the cooling liquid temperature when the first temperature is greater than the second temperature and the second temperature is greater than the temperature upper limit threshold value; The cooling device controller is further configured to control the valve opening degree of the flow regulating valve to increase to the preset opening degree threshold value when the first temperature is greater than the temperature upper limit threshold value and the temperature upper limit threshold value is greater than the second temperature. The cooling device controller is further configured to control the valve opening of the flow regulating valve to reduce to zero and reduce the cooling liquid temperature when the second temperature is greater than the first temperature and the first temperature is greater than the upper temperature threshold, or the second temperature is greater than the upper temperature threshold and the upper temperature threshold is greater than the first temperature. The cooling device controller is further configured to control the valve opening of the flow regulating valve to increase when the upper temperature threshold is greater than the first temperature and the first temperature is greater than the second temperature. The cooling device controller is further configured to control the valve opening of the flow regulating valve to reduce to zero when the upper temperature threshold is greater than the second temperature and the second temperature is greater than the first temperature.

2. The cooling heat exchange system of an electrically powered aerial vehicle of claim 1, wherein, The cooling heat exchange system further comprises a pressure pump: The pressure pump is configured to pressurize the cooling liquid. The cooling device controller is electrically connected with the pressure pump, and the cooling device controller is further configured to control the operating power of the pressure pump to reduce to a preset safe power when detecting that the valve opening of the flow regulating valve reduces to zero.

3. The cooling heat exchange system of an electrically powered aerial vehicle of claim 1, wherein, The flow regulating valve comprises an internal valve and a shell, a cooling liquid inlet, a return liquid outlet, and a liquid supply outlet. The flow regulating valve is configured to receive the cooling liquid through the cooling liquid inlet, to split the cooling liquid to the liquid supply outlet based on an opening between the valve and the shell, and to output the cooling liquid to the cooled equipment through the liquid supply outlet, and to return the remaining cooling liquid to the cooling liquid tank through the return liquid outlet. The cooling device controller is configured to determine the size of the opening according to a comparison result of the first temperature, the second temperature, and a preset threshold, to convert the size of the opening into a linear displacement of the valve in the shell, and to control the valve to move according to the linear displacement to adjust the valve opening of the flow regulating valve.

4. The cooling heat exchange system of an electrically powered aerial vehicle of claim 3, wherein, The cooling heat exchange system further comprises a filter, which is arranged on a return liquid pipeline through which the cooling liquid returns to the cooling liquid tank. The filter is configured to filter the cooling liquid to be returned to the cooling liquid tank.

5. A cooling heat exchange method for an electrically powered aerial vehicle, characterized by, The method applied to the cooling heat exchange system of the electric aerial vehicle of any one of claims 1 to 4, the method comprises: obtaining the cooling liquid temperature in the cooling liquid tank, the first temperature of the cooled equipment, and the second temperature of the cooling liquid input to the cooled equipment from a plurality of temperature sensors respectively; controlling the valve opening of the flow regulating valve and the cooling liquid temperature according to a comparison result of the first temperature, the second temperature, and a preset threshold; The preset threshold comprises a lower temperature threshold and an upper temperature threshold, the lower temperature threshold is used to represent the minimum allowable temperature of the electric aerial vehicle, and the upper temperature threshold is used to represent the maximum allowable temperature of the electric aerial vehicle. The controlling the valve opening of the flow regulating valve and the cooling liquid temperature according to the comparison result of the first temperature, the second temperature, and the preset threshold comprises: in a case where the temperature lower limit threshold is greater than the first temperature and the first temperature is greater than the second temperature, controlling the valve opening degree of the flow regulating valve to be reduced to zero and increasing the coolant temperature; in a case where the temperature lower limit threshold is greater than the second temperature and the second temperature is greater than the first temperature, controlling the valve opening degree of the flow regulating valve to be increased and increasing the coolant temperature; in a case where the first temperature is greater than the second temperature and the second temperature is greater than the temperature lower limit threshold, or the first temperature is greater than the temperature lower limit threshold and the temperature lower limit threshold is greater than the second temperature, controlling the valve opening degree of the flow regulating valve to be increased; in a case where the second temperature is greater than the first temperature and the first temperature is greater than the temperature lower limit threshold, or the second temperature is greater than the temperature lower limit threshold and the temperature lower limit threshold is greater than the first temperature, controlling the valve opening degree of the flow regulating valve to be reduced to zero and decreasing the coolant temperature; in a case where the first temperature is greater than the second temperature and the second temperature is greater than the temperature upper limit threshold, controlling the valve opening degree of the flow regulating valve to be increased to a preset opening degree threshold and decreasing the coolant temperature; in a case where the first temperature is greater than the temperature upper limit threshold and the temperature upper limit threshold is greater than the second temperature, controlling the valve opening degree of the flow regulating valve to be increased to a preset opening degree threshold; in a case where the second temperature is greater than the first temperature and the first temperature is greater than the temperature upper limit threshold, or the second temperature is greater than the temperature upper limit threshold and the temperature upper limit threshold is greater than the first temperature, controlling the valve opening degree of the flow regulating valve to be reduced to zero and decreasing the coolant temperature; in a case where the temperature upper limit threshold is greater than the first temperature and the first temperature is greater than the second temperature, controlling the valve opening degree of the flow regulating valve to be increased; in a case where the temperature upper limit threshold is greater than the second temperature and the second temperature is greater than the first temperature, controlling the valve opening degree of the flow regulating valve to be reduced to zero.

6. The method of claim 5, wherein, The method further comprises: in a case where it is detected that the valve opening degree of the flow regulating valve is reduced to zero, controlling the operating power of a pressure pump for pressurizing the coolant to be reduced to a preset safety power.

7. The method of claim 5, wherein, The controlling of the valve opening degree of the flow regulating valve and the coolant temperature according to the comparison results of the first temperature, the second temperature and preset thresholds comprises: determining the size of an opening according to the comparison results of the first temperature, the second temperature and preset thresholds; converting the size of the opening into a linear displacement of a valve inside a housing; controlling the valve to move according to the linear displacement to regulate the valve opening degree of the flow regulating valve.

8. A cooling device controller comprising a memory and a processor, the memory storing a computer program, characterized in that, The processor executes the computer program to implement the steps of the method of any one of claims 5 to 7.

9. A computer-readable storage medium having stored thereon a computer program, characterized in that, The computer program is executed by the processor to implement the steps of the method of any one of claims 5 to 7.

10. A computer program product comprising a computer program, characterized in that, The computer program is executed by the processor to implement the steps of the method of any one of claims 5 to 7. The computer program is executed by the processor to implement the steps of the method of any one of claims 5 to 7.

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