Roof solar heat collection system for providing heat source for new energy vehicle heat management system and heat supply method
By designing a solar heat collection system on the roof of new energy vehicles, and using heat conductors and heat exchangers to transmit the heat radiated by solar energy to the thermal management system of new energy vehicles, the problem of poor endurance of new energy vehicles in low temperatures in winter is solved, and the problem of poor endurance of new energy vehicles in winter is realized. Efficient heat utilization and energy conservation.
Patent Information
- Application Number
- CN202411634824.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-15
- Publication Date
- 2025-02-14
AI Technical Summary
New energy vehicles have poor endurance in low temperature environments in winter, traditional thermal management systems consume a lot of energy, and existing rooftop solar photovoltaic power generation systems have low energy conversion efficiency and large space occupancy.
Design a rooftop solar heat collection system, including a heat collecting glass curtain, heat exchanger, heat conductor, infusion pipe, liquid drive control mechanism and controller, to transmit the heat radiated by solar energy to the infusion pipe in the heat exchanger through the heat conductor , and use liquids to exchange heat with the thermal management system of new energy vehicles.
It effectively improves the energy utilization path of new energy vehicles, reduces the energy conversion path, reduces energy losses, provides a large amount of heat for the thermal management system of new energy vehicles, and ensures the efficiency of solar energy utilization and the head space of the passenger compartment.
Smart Images
Figure CN119436930A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of new energy vehicles, and in particular to a rooftop solar thermal collection system and a heating method for providing a heat source for a thermal management system of a new energy vehicle. Background Art
[0002] The poor endurance of new energy vehicles in winter is a common problem. The reason is that the chemical activity of power batteries is poor at low temperatures, and a thermal management system is needed to maintain the appropriate operating temperature of the power batteries to improve endurance. However, the traditional thermal management system of new energy vehicles only provides heat sources through ceramic heaters and heat pumps, which consumes a lot of energy. In addition, some new energy vehicles have a cabin heating function, and the cabin heating of new energy vehicles in winter also consumes a lot of electricity, further reducing the endurance of new energy vehicles in winter.
[0003] In response to the above problems, the existing technologies mostly adopt the method of adding a solar photovoltaic power generation system on the roof of new energy vehicles to generate electricity and heat. However, the solar photovoltaic power generation system needs to convert light energy into electrical energy and heat energy. The energy conversion chain is long, the energy loss in the conversion process is high, the utilization rate of solar energy is low, and the energy collected has a poor gain effect on new energy vehicles. The existing roof solar photovoltaic power generation system will also occupy the space of the roof skylight, reduce the head space of the passenger compartment and the light transmittance of the skylight, and even affect the roof shape, thereby increasing the wind resistance of the vehicle when driving. In addition to photovoltaic panels, the roof solar photovoltaic power generation system also needs to be equipped with inverters, batteries and other electronic equipment, further increasing the production cost. Summary of the invention
[0004] The technical problem to be solved by the present invention is to provide a rooftop solar thermal collection system and a heating method for providing a heat source for a thermal management system of a new energy vehicle, so as to solve the above-mentioned problem.
[0005] The technical solution of the present invention to solve the above technical problems is as follows: a rooftop solar thermal collection system for providing a heat source for a thermal management system of a new energy vehicle, comprising: a heat collection glass skylight, a heat exchanger, a plurality of heat conductive sheets, a liquid infusion pipeline, a liquid drive control mechanism and a controller; a plurality of the heat conductive sheets are arranged side by side in the heat collection glass skylight, the heat exchanger is arranged on one side of the heat collection glass skylight, one end of the plurality of the heat conductive sheets is arranged in the heat exchanger, the liquid infusion pipeline is arranged in the heat exchanger, and is connected to the thermal management system of the new energy vehicle through the liquid drive control mechanism. The controller is connected to the liquid drive control mechanism; the liquid drive control mechanism includes: a heat exchanger outlet solenoid valve, a heat exchanger inlet solenoid valve, a heat exchanger outlet temperature sensor, a heat exchanger inlet temperature sensor and a water pump, both ends of the heat exchanger outlet solenoid valve and the heat exchanger inlet solenoid valve are connected to the infusion pipeline and the new energy vehicle thermal management system in a one-to-one correspondence, the heat exchanger outlet temperature sensor and the heat exchanger inlet temperature sensor are both arranged on the infusion pipeline, and the water pump is connected to the infusion pipeline.
[0006] The beneficial effects of the present invention are as follows: multiple heat conducting plates are arranged inside the heat collecting glass skylight, which is beneficial to transmitting the heat radiated by solar energy to the infusion pipe in the heat exchanger through the heat conducting plates, and utilizing the liquid in the infusion pipe and the thermal management system of the new energy vehicle for heat exchange; the present invention utilizes solar energy to convert into thermal energy, provides a heat source for the thermal management system of the new energy vehicle, and effectively increases the energy utilization pathway of the vehicle; the present invention only performs solar energy-thermal energy conversion, has a short energy conversion path, and has low energy loss, and can provide a large amount of heat for the thermal management system of the new energy vehicle; the present invention integrates the roof solar energy collection system into the glass skylight of the car, which can not only ensure the utilization efficiency of solar energy, but also ensure the head space of the passenger compartment and the light transmittance of the skylight, and does not affect the roof shape design; the technical solution of the present invention only requires a solar energy collection glass skylight, a heat exchanger, an infusion pipe, a water pump, a temperature sensor, and a solenoid valve to realize the utilization of solar energy and the storage of thermal energy, and has a low production cost.
[0007] Based on the above technical solution, the present invention can also be improved as follows.
[0008] Furthermore, the heat-collecting glass skylight includes: a roof transparent glass, an interlayer transparent resin, a heat-absorbing layer and an inner layer of heat-insulating transparent glass; the roof transparent glass and the heat-absorbing layer are arranged at the top and bottom ends of the interlayer transparent resin in a one-to-one correspondence, the inner layer of heat-insulating transparent glass is arranged at the bottom end of the heat-absorbing layer, and a plurality of the heat-conducting sheets are arranged side by side at the top end of the heat-absorbing layer.
[0009] The beneficial effects of adopting the above further scheme are: the transparent glass on the roof and the interlayer transparent resin are conducive to conducting the heat of solar radiation to the heat absorption layer, and at the same time, the heat conductive sheet is fixed to conduct the heat in the heat absorption layer to the heat conductive sheet, and the inner layer of insulating transparent glass is conducive to preventing the heat in the heat absorption layer from being conducted to the interior space of the vehicle, thereby ensuring the comfort of the drivers and passengers in the vehicle.
[0010] Furthermore, the heat conducting sheet is adhered to the top of the heat absorbing layer through thermal conductive silicone grease.
[0011] The beneficial effect of adopting the above further solution is that it is conducive to conducting the heat absorbed by the heat absorption layer to the heat exchanger on one side, and completing the heat conduction through the heat exchanger.
[0012] Furthermore, the heat exchanger includes a heat-insulating shell and heat-conducting oil, and the heat-conducting oil is arranged inside the heat-insulating shell.
[0013] The beneficial effects of adopting the above further solution are: the heat-insulating shell is conducive to preventing the internal heat from dissipating into the air, the heat-conducting oil is conducive to receiving the heat conducted by the heat-conducting sheet, and cooperates with the infusion pipeline to achieve heat exchange.
[0014] Furthermore, one end of the heat conducting sheet is sealed and passes through the heat insulating shell and is wrapped by the heat conducting oil.
[0015] The beneficial effect of adopting the above further scheme is that one end of the heat conducting sheet is sealed and passes through the heat insulating shell, which is beneficial to avoid leakage of the heat conducting oil, and the heat conducting oil wraps one end of the heat conducting sheet, which is beneficial to receiving the heat conducted by the heat conducting sheet.
[0016] Furthermore, the liquid infusion pipeline includes: a water inlet pipe, a water outlet pipe and a connecting pipe; the water inlet pipe and the water outlet pipe are sealed and pass through the thermal insulation shell, and the two ends of the connecting pipe are connected to one end of the water inlet pipe and one end of the water outlet pipe in a one-to-one manner, and the connecting pipe is arranged in the thermal insulation shell, and the parts of the water inlet pipe and the water outlet pipe arranged in the thermal insulation shell and the connecting pipe are all wrapped by the heat transfer oil, and one end of a plurality of the heat conducting plates are arranged side by side between the water inlet pipe and the water outlet pipe.
[0017] The beneficial effect of adopting the above further scheme is that the water inlet pipe and the water outlet pipe are connected by a connecting pipe, which is conducive to the flow of heat exchange liquid, and during the flow process, the heat in the heat transfer oil is transferred to the thermal management system of the new energy vehicle.
[0018] Furthermore, two ends of the heat exchanger water outlet solenoid valve are connected one-to-one with one end of the water outlet pipe passing through the heat insulation shell and the water inlet of the new energy vehicle thermal management system, and two ends of the heat exchanger water inlet solenoid valve are connected one-to-one with one end of the water inlet pipe passing through the heat insulation shell and the water outlet of the new energy vehicle thermal management system. The heat exchanger water outlet temperature sensor and the heat exchanger water inlet temperature sensor are arranged one-to-one at one end of the water inlet pipe passing through the heat insulation shell and one end of the water outlet pipe passing through the heat insulation shell, the water pump is connected to the water outlet of the new energy vehicle thermal management system, and the controller is connected to the heat exchanger water outlet solenoid valve, the heat exchanger water inlet solenoid valve, the heat exchanger water outlet temperature sensor, the heat exchanger water inlet temperature sensor and the water pump.
[0019] The beneficial effect of adopting the above further scheme is: the heat exchanger outlet solenoid valve and the heat exchanger inlet solenoid valve cooperate with the controller to control the flow of heat exchange liquid in the inlet pipe and the outlet pipe, the water pump is conducive to providing power for the flow of heat exchange liquid, the heat exchanger outlet temperature sensor and the heat exchanger inlet temperature sensor are conducive to real-time detection of the temperature of the heat transfer liquid output at the heat exchanger outlet and the temperature of the heat transfer liquid input at the heat exchanger inlet, thereby providing judgment conditions for the controller to control the opening and closing of the heat exchanger outlet solenoid valve, the heat exchanger inlet solenoid valve and the water pump.
[0020] A method for providing a heat source for a thermal management system of a new energy vehicle comprises the following steps:
[0021] S1: Set the temperature difference value K and the temperature upper limit value Tmax in the controller;
[0022] S2: Detecting the temperature T1 of the heat transfer liquid at the water outlet of the infusion pipeline by the water outlet temperature sensor of the heat exchanger, and detecting the temperature T2 of the heat transfer liquid at the water inlet of the infusion pipeline by the water inlet temperature sensor of the heat exchanger;
[0023] S3: According to the size relationship between T1 and T2, the size relationship between T2 and Tmax, and the size relationship between the difference between T1 and T2 and K, the opening and closing of the heat exchanger outlet solenoid valve, the heat exchanger inlet solenoid valve and the power of the water pump are controlled.
[0024] The beneficial effect of the present invention is that it is conducive to providing judgment conditions for the controller to open and close the heat exchanger outlet solenoid valve, the heat exchanger inlet solenoid valve and the water pump by real-time monitoring the temperature of the water outlet and the water inlet of the infusion pipeline, thereby realizing dynamic and continuous heat exchange and heat regulation between the thermal management system of the new energy vehicle and the roof solar thermal collection system.
[0025] Further, in step S3, if T1 is greater than T2, and the difference is greater than or equal to K, the heat exchanger water outlet solenoid valve and the heat exchanger water inlet solenoid valve are both opened, and the water pump is started at full power to transfer the heat in the roof solar thermal collection system to the new energy vehicle thermal management system; if T1 is greater than T2, and the difference is less than K, the heat exchanger water outlet solenoid valve and the heat exchanger water inlet solenoid valve are both opened, and the water pump is started at reduced power to slow down the speed of heat transfer from the roof solar thermal collection system to the new energy vehicle thermal management system; if T1 is less than or equal to T2, the heat exchanger water outlet solenoid valve, the heat exchanger water inlet solenoid valve and the water pump are all closed to stop the roof solar thermal collection system and the new energy vehicle thermal management system from performing heat exchange.
[0026] The beneficial effect of adopting the above further scheme is: when T1 is greater than T2, and the difference is greater than or equal to K, it means that the temperature difference between the thermal management system of the new energy vehicle and the roof solar thermal collection system is large, and the water pump will start at full power to quickly transfer the heat generated by the roof solar thermal collection system to the thermal management system of the new energy vehicle; when T1 is greater than T2, and the difference is less than K, it means that the temperature difference between the thermal management system of the new energy vehicle and the roof solar thermal collection system is small, the water pump power is reduced, the flow rate of the heat transfer liquid is slowed down, and the residence time of the unit heat transfer liquid in the roof solar thermal collection system is increased to increase the temperature of T1, so that the difference between T1 and T2 is greater than or equal to K; if the water pump power drops to the minimum and still cannot maintain T1 greater than T2, that is, when T1 is less than or equal to T2, the heat exchanger outlet solenoid valve, the heat exchanger inlet solenoid valve and the water pump are all closed, and the new energy vehicle thermal management system and the roof solar thermal collection system stop heat exchange to prevent heat loss from the new energy vehicle thermal management system.
[0027] Further, in step S3, if T2 is greater than Tmax, the heat exchanger outlet solenoid valve, the heat exchanger inlet solenoid valve and the water pump are all closed, stopping the roof solar thermal collection system and the new energy vehicle thermal management system from performing heat exchange.
[0028] The beneficial effect of adopting the above further scheme is: when T2 is greater than Tmax, it means that the temperature of the thermal management system of the new energy vehicle is high enough, and the heat exchanger outlet solenoid valve, the heat exchanger inlet solenoid valve and the water pump are all closed, thereby preventing the temperature of the thermal management system of the new energy vehicle from being too high. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] Figure 1 A top view of the overall structure provided by an embodiment of the present invention;
[0030] Figure 2 A cross-sectional view of a heat-collecting glass skylight and a heat-conducting sheet provided in an embodiment of the present invention;
[0031] Figure 3 A side view of a heat exchanger, a heat conducting sheet and a liquid infusion pipeline provided in an embodiment of the present invention;
[0032] Figure 4 A flow chart of a heating method provided in an embodiment of the present invention.
[0033] In the accompanying drawings, the components represented by the reference numerals are listed as follows:
[0034] 1. Solar glass skylight; 2. Heat exchanger; 3. Heat conducting plate; 4. Liquid infusion pipeline; 11. Transparent glass on the roof; 12. Interlayer transparent resin; 13. Heat absorbing layer; 14. Inner insulating transparent glass; 21. Insulating outer shell; 22. Heat transfer oil; 41. Water inlet pipe; 42. Water outlet pipe; 43. Connecting pipe. DETAILED DESCRIPTION
[0035] The principles and features of the present invention are described below. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.
[0036] like Figures 1 to 3 As shown, a rooftop solar thermal collection system for providing a heat source for a thermal management system of a new energy vehicle comprises: a heat collecting glass skylight 1, a heat exchanger 2, a plurality of heat conducting sheets 3, a liquid infusion pipeline 4, a liquid drive control mechanism and a controller; a plurality of the heat conducting sheets 3 are arranged side by side in the heat collecting glass skylight 1, the heat exchanger 2 is arranged on one side of the heat collecting glass skylight 1, one end of the plurality of the heat conducting sheets 3 is arranged in the heat exchanger 2, the liquid infusion pipeline 4 is arranged in the heat exchanger 2, and is connected to the thermal management system of the new energy vehicle through the liquid drive control mechanism, The controller is connected to the liquid drive control mechanism; the liquid drive control mechanism includes: a heat exchanger outlet solenoid valve, a heat exchanger inlet solenoid valve, a heat exchanger outlet temperature sensor, a heat exchanger inlet temperature sensor and a water pump. Both ends of the heat exchanger outlet solenoid valve and the heat exchanger inlet solenoid valve are connected to the infusion pipeline 4 and the new energy vehicle thermal management system in a one-to-one correspondence. The heat exchanger outlet temperature sensor and the heat exchanger inlet temperature sensor are both arranged on the infusion pipeline 4, and the water pump is connected to the infusion pipeline 4.
[0037] The beneficial effects of the present invention are as follows: multiple heat conducting plates are arranged inside the heat collecting glass skylight, which is beneficial to transmitting the heat radiated by solar energy to the infusion pipe in the heat exchanger through the heat conducting plates, and utilizing the liquid in the infusion pipe and the thermal management system of the new energy vehicle for heat exchange; the present invention utilizes solar energy to convert into thermal energy, provides a heat source for the thermal management system of the new energy vehicle, and effectively increases the energy utilization pathway of the vehicle; the present invention only performs solar energy-thermal energy conversion, has a short energy conversion path, and has low energy loss, and can provide a large amount of heat for the thermal management system of the new energy vehicle; the present invention integrates the roof solar energy collection system into the glass skylight of the car, which can not only ensure the utilization efficiency of solar energy, but also ensure the head space of the passenger compartment and the light transmittance of the skylight, and does not affect the roof shape design; the technical solution of the present invention only requires a solar energy collection glass skylight, a heat exchanger, an infusion pipe, a water pump, a temperature sensor, and a solenoid valve to realize the utilization of solar energy and the storage of thermal energy, and has a low production cost.
[0038] Preferably, Figure 2 As shown, the heat-collecting glass skylight 1 includes: a roof transparent glass 11, an interlayer transparent resin 12, a heat-absorbing layer 13 and an inner layer of heat-insulating transparent glass 14; the roof transparent glass 11 and the heat-absorbing layer 13 are arranged at the top and bottom ends of the interlayer transparent resin 12 in a one-to-one correspondence, the inner layer of heat-insulating transparent glass 14 is arranged at the bottom end of the heat-absorbing layer 13, and a plurality of the heat-conducting sheets 3 are arranged side by side at the top end of the heat-absorbing layer 13.
[0039] It should be noted that: in a preferred embodiment of the present invention, the interlayer transparent resin 12 is made of polyvinyl butyral; the heat absorption layer 13 is coated with a black translucent heat absorption film, which ensures a certain light transmittance and a heat collection effect.
[0040] The beneficial effects of adopting the above-mentioned preferred scheme are: the transparent glass on the roof and the interlayer transparent resin are conducive to conducting the heat of solar radiation to the heat absorption layer, and at the same time, the heat conductive sheet is fixed to conduct the heat in the heat absorption layer to the heat conductive sheet, and the inner layer of insulating transparent glass is conducive to preventing the heat in the heat absorption layer from being conducted to the interior space of the vehicle, thereby ensuring the comfort of the drivers and passengers in the vehicle.
[0041] Preferably, the heat conducting sheet 3 is adhered to the top of the heat absorbing layer 13 by means of thermal conductive silicone grease.
[0042] The beneficial effect of adopting the above preferred solution is that it is conducive to conducting the heat absorbed by the heat absorption layer to the heat exchanger on one side, and completing the heat conduction through the heat exchanger.
[0043] Preferably, Figure 3 As shown, the heat exchanger 2 includes a heat-insulating shell 21 and heat-conducting oil 22 , and the heat-conducting oil 22 is arranged inside the heat-insulating shell 21 .
[0044] The beneficial effects of adopting the above preferred solution are: the heat-insulating shell is conducive to preventing the internal heat from dissipating into the air, the heat-conducting oil is conducive to receiving the heat conducted by the heat-conducting sheet, and cooperates with the infusion pipeline to achieve heat exchange.
[0045] Preferably, Figure 3 As shown, one end of the heat conducting sheet 3 seals through the heat insulating shell 21 and is wrapped by the heat conducting oil 22 .
[0046] The beneficial effects of adopting the above preferred solution are: one end of the heat conducting sheet is sealed and passes through the heat insulating shell, which is beneficial to avoid leakage of the heat conducting oil, and the heat conducting oil wraps one end of the heat conducting sheet, which is beneficial to receiving the heat conducted by the heat conducting sheet.
[0047] Preferably, Figure 3 As shown, the liquid infusion pipeline 4 includes: an inlet pipe 41, an outlet pipe 42 and a connecting pipe 43; the inlet pipe 41 and the outlet pipe 42 are sealed and pass through the heat-insulating outer shell 21, and the two ends of the connecting pipe 43 are connected to one end of the inlet pipe 41 and one end of the outlet pipe 42 in a one-to-one manner. The connecting pipe 43 is arranged in the heat-insulating outer shell 21, and the parts of the inlet pipe 41 and the outlet pipe 42 arranged in the heat-insulating outer shell 21 and the connecting pipe 43 are all wrapped by the heat-conducting oil 22, and one end of a plurality of the heat-conducting plates 3 is arranged side by side between the inlet pipe 41 and the outlet pipe 42.
[0048] The beneficial effect of adopting the above preferred scheme is that the water inlet pipe and the water outlet pipe are connected by a connecting pipe, which is conducive to the flow of heat exchange liquid, and during the flow process, the heat in the heat transfer oil is transferred to the thermal management system of the new energy vehicle.
[0049] Preferably, the two ends of the heat exchanger water outlet solenoid valve are connected one-to-one to one end of the water outlet pipe 42 passing through the heat insulation shell 21 and the water inlet of the new energy vehicle thermal management system, and the two ends of the heat exchanger water inlet solenoid valve are connected one-to-one to one end of the water inlet pipe 41 passing through the heat insulation shell 21 and the water outlet of the new energy vehicle thermal management system. The heat exchanger water outlet temperature sensor and the heat exchanger water inlet temperature sensor are arranged one-to-one at one end of the water inlet pipe 41 passing through the heat insulation shell 21 and one end of the water outlet pipe 42 passing through the heat insulation shell 21, the water pump is connected to the water outlet of the new energy vehicle thermal management system, and the controller is connected to the heat exchanger water outlet solenoid valve, the heat exchanger water inlet solenoid valve, the heat exchanger water outlet temperature sensor, the heat exchanger water inlet temperature sensor and the water pump.
[0050] The beneficial effects of adopting the above-mentioned preferred scheme are: the heat exchanger outlet solenoid valve and the heat exchanger inlet solenoid valve cooperate with the controller to control the flow of heat exchange liquid in the inlet pipe and the outlet pipe, the water pump is conducive to providing power for the flow of heat exchange liquid, and the heat exchanger outlet temperature sensor and the heat exchanger inlet temperature sensor are conducive to real-time detection of the temperature of the heat transfer liquid output at the heat exchanger outlet and the temperature of the heat transfer liquid input at the heat exchanger inlet, thereby providing judgment conditions for the controller to control the opening and closing of the heat exchanger outlet solenoid valve, the heat exchanger inlet solenoid valve and the water pump.
[0051] like Figure 4 As shown, a method for providing a heat source for a thermal management system of a new energy vehicle comprises the following steps:
[0052] S1: Set the temperature difference value K and the temperature upper limit value Tmax in the controller;
[0053] S2: Detecting the temperature T1 of the heat transfer liquid at the water outlet of the infusion pipe 4 by the water outlet temperature sensor of the heat exchanger, and detecting the temperature T2 of the heat transfer liquid at the water inlet of the infusion pipe 4 by the water inlet temperature sensor of the heat exchanger;
[0054] S3: According to the size relationship between T1 and T2, the size relationship between T2 and Tmax, and the size relationship between the difference between T1 and T2 and K, the opening and closing of the heat exchanger outlet solenoid valve, the heat exchanger inlet solenoid valve and the power of the water pump are controlled.
[0055] Among them, it should be noted that: in step S2, the heat exchanger water outlet temperature sensor detects the temperature of one end of the water outlet pipe 42 passing through the insulating shell 21, that is, the water outlet; the heat exchanger water inlet temperature sensor detects the temperature of one end of the water inlet pipe 41 passing through the insulating shell 21, that is, the water inlet, which is also the temperature in the thermal management system of the new energy vehicle.
[0056] The beneficial effect of the present invention is that it is conducive to providing judgment conditions for the controller to open and close the heat exchanger outlet solenoid valve, the heat exchanger inlet solenoid valve and the water pump by real-time monitoring the temperature of the water outlet and the water inlet of the infusion pipeline, thereby realizing dynamic and continuous heat exchange and heat regulation between the thermal management system of the new energy vehicle and the roof solar thermal collection system.
[0057] Preferably, in step S3, if T1 is greater than T2, and the difference is greater than or equal to K, the heat exchanger outlet solenoid valve and the heat exchanger inlet solenoid valve are both opened, and the water pump is started at full power to transfer the heat in the roof solar thermal collection system to the new energy vehicle thermal management system; if T1 is greater than T2, and the difference is less than K, the heat exchanger outlet solenoid valve and the heat exchanger inlet solenoid valve are both opened, and the water pump is started at reduced power to slow down the speed at which heat is transferred from the roof solar thermal collection system to the new energy vehicle thermal management system; if T1 is less than or equal to T2, the heat exchanger outlet solenoid valve, the heat exchanger inlet solenoid valve and the water pump are all closed to stop the roof solar thermal collection system and the new energy vehicle thermal management system from performing heat exchange.
[0058] The beneficial effects of adopting the above-mentioned preferred scheme are: when T1 is greater than T2, and the difference is greater than or equal to K, it means that the temperature difference between the thermal management system of the new energy vehicle and the roof solar thermal collection system is large at this time, and the water pump will start at full power to quickly transfer the heat generated by the roof solar thermal collection system to the thermal management system of the new energy vehicle; when T1 is greater than T2, and the difference is less than K, it means that the temperature difference between the thermal management system of the new energy vehicle and the roof solar thermal collection system is small at this time, the water pump power is reduced, the flow rate of the heat transfer liquid is slowed down, and the residence time of the unit heat transfer liquid in the roof solar thermal collection system is increased to increase the temperature of T1, so that the difference between T1 and T2 is greater than or equal to K; if the water pump power drops to the minimum, it still cannot maintain T1 greater than T2, that is, when T1 is less than or equal to T2, the heat exchanger outlet solenoid valve, the heat exchanger inlet solenoid valve and the water pump are all closed, and the new energy vehicle thermal management system and the roof solar thermal collection system stop heat exchange to prevent heat loss from the new energy vehicle thermal management system.
[0059] Preferably, in step S3, if T2 is greater than Tmax, the heat exchanger outlet solenoid valve, the heat exchanger inlet solenoid valve and the water pump are all closed, stopping the roof solar thermal collection system and the new energy vehicle thermal management system from performing heat exchange.
[0060] The beneficial effect of adopting the above-mentioned preferred scheme is: when T2 is greater than Tmax, it means that the temperature of the thermal management system of the new energy vehicle is already high enough, and the heat exchanger outlet solenoid valve, the heat exchanger inlet solenoid valve and the water pump are all closed, thereby preventing the temperature of the thermal management system of the new energy vehicle from being too high.
[0061] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.
[0062] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0063] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0064] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0065] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.
[0066] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.
Claims
1. A rooftop solar thermal collection system that provides a heat source for a thermal management system of a new energy vehicle, characterized in that: include: A heat-collecting glass skylight (1), a heat exchanger (2), a plurality of heat-conducting sheets (3), a liquid delivery pipeline (4), a liquid drive control mechanism and a controller; A plurality of the heat conducting sheets (3) are arranged side by side in the heat collecting glass skylight (1); the heat exchanger (2) is arranged on one side of the heat collecting glass skylight (1); one end of the plurality of the heat conducting sheets (3) is arranged in the heat exchanger (2); the liquid infusion pipeline (4) is arranged in the heat exchanger (2) and is connected to the new energy vehicle thermal management system through the liquid drive control mechanism; and the controller is connected to the liquid drive control mechanism; The liquid drive control mechanism comprises: a heat exchanger outlet solenoid valve, a heat exchanger inlet solenoid valve, a heat exchanger outlet temperature sensor, a heat exchanger inlet temperature sensor and a water pump; both ends of the heat exchanger outlet solenoid valve and the heat exchanger inlet solenoid valve are connected to the liquid infusion pipeline (4) and the new energy vehicle thermal management system in a one-to-one correspondence; the heat exchanger outlet temperature sensor and the heat exchanger inlet temperature sensor are both arranged on the liquid infusion pipeline (4); and the water pump is connected to the liquid infusion pipeline (4).
2. According to claim 1, a rooftop solar thermal collection system for providing a heat source for a thermal management system of a new energy vehicle is characterized in that: The heat-collecting glass skylight (1) comprises: roof transparent glass (11), interlayer transparent resin (12), a heat-absorbing layer (13) and an inner layer of heat-insulating transparent glass (14); The roof transparent glass (11) and the heat absorbing layer (13) are arranged one by one at the top and bottom of the interlayer transparent resin (12), the inner layer heat insulating transparent glass (14) is arranged at the bottom end of the heat absorbing layer (13), and a plurality of the heat conducting sheets (3) are arranged side by side at the top end of the heat absorbing layer (13).
3. According to claim 2, a rooftop solar thermal collection system for providing a heat source for a thermal management system of a new energy vehicle is characterized in that: The heat conducting sheet (3) is adhered to the top of the heat absorbing layer (13) by means of heat conducting silicone grease.
4. According to claim 1, a rooftop solar thermal collection system for providing a heat source for a thermal management system of a new energy vehicle is characterized in that: The heat exchanger (2) comprises a heat-insulating outer shell (21) and heat-conducting oil (22), wherein the heat-conducting oil (22) is arranged inside the heat-insulating outer shell (21).
5. According to claim 4, a rooftop solar thermal collection system for providing a heat source for a thermal management system of a new energy vehicle is characterized in that: One end of the heat conducting sheet (3) is sealed and passes through the heat insulating shell (21) and is wrapped by the heat conducting oil (22).
6. According to claim 4, a rooftop solar thermal collection system for providing a heat source for a thermal management system of a new energy vehicle is characterized in that: The liquid delivery pipeline (4) comprises: an inlet pipe (41), an outlet pipe (42) and a connecting pipe (43); the inlet pipe (41) and the outlet pipe (42) are sealed and pass through the heat-insulating outer shell (21); two ends of the connecting pipe (43) are connected to one end of the inlet pipe (41) and one end of the outlet pipe (42) in a one-to-one correspondence; the connecting pipe (43) is arranged in the heat-insulating outer shell (21); the parts of the inlet pipe (41) and the outlet pipe (42) arranged in the heat-insulating outer shell (21) and the connecting pipe (43) are all wrapped by the heat-conducting oil (22); and one end of a plurality of the heat-conducting sheets (3) are arranged side by side between the inlet pipe (41) and the outlet pipe (42).
7. A rooftop solar thermal collection system for providing a heat source for a thermal management system of a new energy vehicle according to claim 6, characterized in that: The two ends of the heat exchanger water outlet solenoid valve are connected one-to-one with one end of the water outlet pipe (42) passing through the heat insulation shell (21) and the water inlet of the new energy vehicle thermal management system. The two ends of the heat exchanger water inlet solenoid valve are connected one-to-one with one end of the water inlet pipe (41) passing through the heat insulation shell (21) and the water outlet of the new energy vehicle thermal management system. The heat exchanger water outlet temperature sensor and the heat exchanger water inlet temperature sensor are arranged one-to-one at one end of the water inlet pipe (41) passing through the heat insulation shell (21) and one end of the water outlet pipe (42) passing through the heat insulation shell (21). The water pump is connected to the water outlet of the new energy vehicle thermal management system. The controller is connected to the heat exchanger water outlet solenoid valve, the heat exchanger water inlet solenoid valve, the heat exchanger water outlet temperature sensor, the heat exchanger water inlet temperature sensor and the water pump.
8. A method for providing a heat source for a thermal management system of a new energy vehicle, characterized in that: Based on the roof solar thermal collection system for providing a heat source for a thermal management system of a new energy vehicle according to any one of claims 1 to 7, the heating method comprises the following steps: S1: Set the temperature difference K and the temperature upper limit Tmax in the controller; S2: detecting the temperature T1 of the heat-conducting liquid at the water outlet of the infusion pipeline (4) by means of a heat exchanger water outlet temperature sensor, and detecting the temperature T2 of the heat-conducting liquid at the water inlet of the infusion pipeline (4) by means of a heat exchanger water inlet temperature sensor; S3: According to the size relationship between T1 and T2, the size relationship between T2 and Tmax, and the size relationship between the difference between T1 and T2 and K, the opening and closing of the heat exchanger outlet solenoid valve, the heat exchanger inlet solenoid valve and the power of the water pump are controlled.
9. A method for providing a heat source for a thermal management system of a new energy vehicle according to claim 8, characterized in that: In step S3, if T1 is greater than T2, and the difference is greater than or equal to K, the heat exchanger outlet solenoid valve and the heat exchanger inlet solenoid valve are both opened, and the water pump is started at full power to transfer the heat in the roof solar thermal collection system to the new energy vehicle thermal management system; if T1 is greater than T2, and the difference is less than K, the heat exchanger outlet solenoid valve and the heat exchanger inlet solenoid valve are both opened, and the water pump is started at reduced power to slow down the speed of heat transfer from the roof solar thermal collection system to the new energy vehicle thermal management system; if T1 is less than or equal to T2, the heat exchanger outlet solenoid valve, the heat exchanger inlet solenoid valve and the water pump are all closed to stop the roof solar thermal collection system and the new energy vehicle thermal management system from performing heat exchange.
10. A method for providing a heat source for a thermal management system of a new energy vehicle according to claim 8, characterized in that: In step S3, if T2 is greater than Tmax, the heat exchanger outlet solenoid valve, the heat exchanger inlet solenoid valve and the water pump are all closed, stopping the roof solar thermal collection system and the new energy vehicle thermal management system from performing heat exchange.