Three-way valve, thermal management system and vehicle

Abstract

The invention provides a three-way valve, a thermal management system and a vehicle, the three-way valve comprises a valve body and a valve core, the valve body is provided with a flow inlet channel, a first flow outlet and a second flow outlet, and the flow inlet channel is provided with a first opening, a second opening and a third opening; when the fluid flows into the overflowing channel from one of the first opening and the second opening, the flow of the fluid in the overflowing channel flowing out of the third opening is smaller than the flow of the fluid flowing out of the other one of the first opening and the second opening; the valve core is movably arranged on the valve body; the valve element can move to the first position and the second position, so that one of the first opening and the second opening and the third opening correspondingly communicate with the first flow outlet and the second flow outlet correspondingly. According to the three-way valve, by switching the position of the valve element, the flow inlet channel is made to communicate with the first flow outlet and the second flow outlet at the same time, the flow of the first flow outlet and the flow of the second flow outlet can be adjusted, and therefore the use scene of the three-way valve is expanded.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of thermal management, and particularly relates to a three-way valve, a thermal management system and a vehicle. BACKGROUND

[0002] A three-way valve is disclosed in the prior art, which comprises a valve body and a valve core. The valve body has an inlet flow channel, a first outlet flow port and a second outlet flow port. The valve core is provided with a flow-through channel, and the flow-through channel has three openings. The valve core can rotate relative to the valve body. When the valve core is rotated to a preset position, the flow-through channel can be correspondingly connected to the inlet flow channel, the first outlet flow port and the second outlet flow port on the valve body through the three openings, so that the inlet flow channel can be connected to the first outlet flow port and the second outlet flow port through the flow-through channel on the valve core.

[0003] The above technical solution has the following defects: when the inlet flow channel on the valve body is connected to the first outlet flow port and the second outlet flow port through the flow-through channel on the valve core, the flow rates of the first outlet flow port and the second outlet flow port cannot be adjusted, which limits the use scenarios of the three-way valve, and therefore, the problem needs to be solved. SUMMARY

[0004] Therefore, the present application provides a three-way valve, a thermal management system and a vehicle, which can solve the technical problem that the flow rates of the first outlet flow port and the second outlet flow port cannot be adjusted when the inlet flow channel on the valve body is connected to the first outlet flow port and the second outlet flow port through the valve core, which limits the use scenarios of the three-way valve.

[0005] In order to solve the above problems, the present application provides a three-way valve, which comprises a valve body and a movably arranged valve core. The valve body has an inlet flow channel, a first outlet flow port and a second outlet flow port. The valve core is provided with a flow-through channel. The inlet flow channel is used to be connected to at least one of the first outlet flow port and the second outlet flow port through the flow-through channel. The flow-through channel has a first opening, a second opening and a third opening. When the fluid flows into the flow-through channel from one of the first opening and the second opening, the flow rate of the fluid flowing out of the third opening is smaller than that of the fluid flowing out of the other one of the first opening and the second opening. The valve core can be moved to a first position and a second position. In the first position and the second position, the flow-through channel is connected to the inlet flow channel through one of the first opening and the second opening. In the first position, the other one of the first opening and the second opening is connected to the first outlet flow port, and the third opening is connected to the second outlet flow port. In the second position, the other one of the first opening and the second opening is connected to the second outlet flow port, and the third opening is connected to the first outlet flow port.

[0006] In some embodiments, in the first position, the over-flow passage is drained from the in-flow passage through the first opening; and in the second position, the over-flow passage is drained from the in-flow passage through the second opening.

[0007] In some embodiments, the in-flow passage has a first fluid outlet and a second fluid outlet, and the valve core is provided with a blocking portion; wherein, in the first position, the valve core blocks the second fluid outlet through the blocking portion, and the first opening is opposite to the first fluid outlet, so that the first opening is drained from the in-flow passage through the first fluid outlet; and in the second position, the valve core blocks the first fluid outlet through the blocking portion, and the second opening is opposite to the second fluid outlet, so that the second opening is drained from the in-flow passage through the second fluid outlet.

[0008] In some embodiments, the valve core is further movable to a third position, in which the valve core is opposite to the first fluid outlet through the second opening, opposite to the second fluid outlet through the third opening, opposite to the first out-flow port through the first opening, and blocks the second out-flow port through the blocking portion.

[0009] In some embodiments, the valve core is further movable to a fourth position, in which the valve core is opposite to the second fluid outlet through the first opening, opposite to the first fluid outlet through the third opening, and opposite to the second out-flow port through the second opening.

[0010] In some embodiments, the in-flow passage comprises a first passage segment and a second passage segment, one end of the first passage segment is an inlet of the in-flow passage, the other end of the first passage segment is the first fluid outlet; a connecting port is arranged in the middle of the first passage segment, the first passage segment is communicated with one end of the second passage segment through the connecting port, and the other end of the second passage segment is the second fluid outlet.

[0011] In some embodiments, in the first position, the second opening is opposite to the first out-flow port, so that the second opening can out-flow through the first out-flow port; and the third opening is opposite to the second out-flow port, so that the third opening can out-flow through the second out-flow port; and / or, in the second position, the first opening is opposite to the second out-flow port, so that the first opening can out-flow through the second out-flow port; and the third opening is opposite to the first out-flow port, so that the third opening can out-flow through the first out-flow port.

[0012] In some embodiments, the valve body has an inner cavity, the first outlet, the second outlet and the inlet channel all pass through to the inner cavity; the valve core is rotatably arranged in the inner cavity to move relative to the valve body by rotation.

[0013] In some embodiments, the through-flow channel includes a through-flow hole passing through the valve core, the through-flow hole is a linear hole, one end of the through-flow hole serves as the first opening, the other end of the through-flow hole serves as the second opening, the third opening is arranged in the middle of the through-flow hole, and the center line of the third opening is perpendicular to the center line of the through-flow hole.

[0014] The application also provides a heat management system comprising the three-way valve according to any one of the above.

[0015] In some embodiments, the heat management system further comprises an air conditioning system, a battery heat exchange branch and an electrical component heat exchange branch, the air conditioning system has a heat exchanger, the air conditioning system can make the heat exchanger refrigerate or heat by mode switching; wherein the heat exchanger has a first heat exchange channel and a second heat exchange channel that can exchange heat with each other, the heat exchanger is connected in the air conditioning system through the first heat exchange channel; the battery heat exchange branch is used for heat exchange with a battery, one end of the battery heat exchange branch communicates with the first outlet, the other end of the battery heat exchange branch communicates with one end of the second heat exchange channel; the electrical component heat exchange branch is used for heat exchange with an electrical component, one end of the electrical component heat exchange branch communicates with the second outlet, one end of the pump body communicates with the inlet of the inlet channel, the other end of the second heat exchange channel and the other end of the electrical component heat exchange branch both communicate with the other end of the pump body.

[0016] The application also provides a vehicle comprising the three-way valve according to any one of the above or the heat management system according to any one of the above.

[0017] The three-way valve, the heat management system and the vehicle provided by the application have the following beneficial effects: 1. When the valve core is moved to the first position and the second position, the inlet channel on the valve body can be communicated with the first outlet and the second outlet through the flow channel on the valve core. And the application designs the flow channel on the valve core, so that when the fluid flows into the flow channel from one of the first opening and the second opening, the flow rate of the fluid flowing out of the third opening in the flow channel is less than the flow rate of the fluid flowing out of the other of the first opening and the second opening. In this way, when the valve core is rotated to the first position to make the other of the first opening and the second opening flow out through the first outlet, and the third opening flows out through the second outlet, the flow rate of the second outlet can be less than the flow rate of the first outlet. Similarly, when the valve core is rotated to the second position to make the other of the first opening and the second opening flow out through the second outlet, and the third opening flows out through the first outlet, the flow rate of the second outlet can be greater than the flow rate of the first outlet. In this way, when the valve core is switched between the first position and the second position, it not only realizes the communication of the inlet channel with the first outlet and the second outlet, but also adjusts the flow rates of the first outlet and the second outlet, thereby expanding the use scenarios of the three-way valve and improving the practicability of the three-way valve.

[0018] 2. The application replaces the complex system of multiple valve groups with a single three-way valve, simplifies the pipeline, and reduces the cost, weight and potential failure rate.

[0019] 3. The application uses a heat exchanger as a unified heat exchange core, which is compact in structure and high in reliability. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. The drawings in the following description are only exemplary, and those skilled in the art can also obtain other implementation drawings according to the provided drawings without creating any creative labor.

[0021] Figure 1 is a perspective view of the three-way valve of the application; Figure 2 is a sectional view of the valve body of the three-way valve of the application; Figure 3 is a structural schematic view of the valve core of the three-way valve of the application; Figure 4 is a sectional view of the three-way valve of the application when the valve core is moved to the first position; Figure 5 is a sectional view of the three-way valve of the application when the valve core is moved to the second position; Figure 6 is a sectional view of the three-way valve of the application when the valve core is moved to the third position; Figure 7 is a sectional view of the three-way valve of the present application when the valve core is moved to the fourth position; Figure 8 is a structural schematic view of the thermal management system of the present application when the air conditioning system is refrigerating and the valve core is located at the third position; Figure 9 is a structural schematic view of the thermal management system of the present application when the air conditioning system is refrigerating and the valve core is located at the first position; Figure 10 is a structural schematic view of the thermal management system of the present application when the air conditioning system is refrigerating and the valve core is located at the fourth position; Figure 11 is a structural schematic view of the thermal management system of the present application when the air conditioning system is refrigerating and the valve core is located at the second position; Figure 12 is a structural schematic view of the thermal management system of the present application when the air conditioning system is heating and the valve core is located at the third position; Figure 13 is a structural schematic view of the thermal management system of the present application when the air conditioning system is heating and the valve core is located at the first position.

[0022] The reference signs are as follows: 1, valve core; 2, valve body; 3, inlet flow passage; 4, heat exchanger; 5, battery; 6, electrical component; 7, battery heat exchanger branch; 8, electrical component heat exchanger branch; 9, pump body; 11, overflow passage; 12, plugging part; 20, inner cavity; 21, first outlet; 22, second outlet; 31, first passage section; 32, second passage section; 100, three-way valve; 101, first opening; 102, second opening; 13, third opening; 311, first fluid outlet; 312, second fluid outlet; 1a, overflow passage. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative, but not as any limitation on the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without any creative work, are within the scope of protection of the present application.

[0024] In the description of the application, it needs to be understood that the orientation words such as "front, back, up, down, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the application and simplifying the description, and do not indicate and imply that the devices or elements referred to must have a specific orientation or be constructed and operated in a specific orientation, therefore cannot be understood as a limitation on the scope of protection of the application; the orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.

[0025] For the convenience of description, spatial relative terms such as "over", "above", "upper surface", "upper" and the like can be used herein to describe the spatial positional relationship of one device or feature with other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the drawings. For example, if the device in the drawing is inverted, the device described as "above" or "over" other devices or structures will be positioned "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein are interpreted accordingly.

[0026] In addition, it should be noted that the use of "first", "second" and the like to define parts is only for the convenience of distinguishing the corresponding parts, and the above words have no special meaning unless otherwise stated, therefore cannot be understood as a limitation on the scope of protection of the application.

[0027] For reference Figures 1-4 As shown, according to the embodiment of the application, a three-way valve 100 is provided, which comprises a valve body 2 and a valve core 1 movably arranged on the valve body 2, the valve body 2 has an inlet passage 3, a first outlet port 21 and a second outlet port 22. The valve core 1 is provided with a flow passage 1a, and the inlet passage 3 is used to communicate with at least one of the first outlet port 21 and the second outlet port 22 through the flow passage 1a on the valve core 1. The flow passage 1a has a first opening 101, a second opening 102 and a third opening 13. Wherein, when the fluid flows into the flow passage 1a from one of the first opening 101 and the second opening 102, the flow rate of the fluid flowing out of the third opening 13 in the flow passage 1a is less than the flow rate of the fluid flowing out of the other of the first opening 101 and the second opening 102.

[0028] The valve core 1 can be moved to a first position and a second position. In the first position and the second position, the flow passage 3 is guided from the inlet flow passage 3 through one of the first opening 101 and the second opening 102. In the first position, the other of the first opening 101 and the second opening 102 is guided out through the first outlet 21, and the third opening 13 is guided out through the second outlet 22. In the second position, the other of the first opening 101 and the second opening 102 is guided out through the second outlet 22, and the third opening 13 is guided out through the first outlet 21.

[0029] In the above example, when the valve core 1 is moved to the first position and the second position, the inlet flow passage 3 on the valve body 2 can be communicated with the first outlet 21 and the second outlet 22 through the flow passage 1a on the valve core 1. And the present application designs the flow passage 1a on the valve core 1, so that when the fluid flows into the flow passage 1a from one of the first opening 101 and the second opening 102, the flow rate of the fluid flowing out of the third opening 13 in the flow passage 1a is less than the flow rate of the fluid flowing out of the other of the first opening 101 and the second opening 102. Thus, when the valve core 1 is moved to the first position to make the other of the first opening 101 and the second opening 102 flow out through the first outlet 21 and the third opening 13 flow out through the second outlet 22, the flow rate of the second outlet 22 can be less than the flow rate of the first outlet 21. Similarly, when the valve core 1 is moved to the second position to make the other of the first opening 101 and the second opening 102 flow out through the second outlet 22 and the third opening 13 flow out through the first outlet 21, the flow rate of the second outlet 22 can be greater than the flow rate of the first outlet 21. Thus, when the valve core 1 is switched between the first position and the second position, the inlet flow passage 3 is simultaneously communicated with the first outlet 21 and the second outlet 22, and the flow rates of the first outlet 21 and the second outlet 22 can be adjusted, thereby expanding the use scenarios of the three-way valve 100 and improving the practicability of the three-way valve.

[0030] In a specific application example, in the first position, the flow passage 3 is guided from the inlet flow passage 3 through the first opening 101, and correspondingly, at this time, the second opening 102 is guided out through the first outlet. In the second position, the flow passage 3 is guided from the inlet flow passage 3 through the second opening 102, and correspondingly, at this time, the first opening 101 is guided out through the second outlet.

[0031] In some embodiments, the aforementioned inlet flow passage 3 has a first fluid outlet 311 and a second fluid outlet 312. The valve core 1 is provided with a blocking portion 12. In the first position, the valve core 1 blocks the second fluid outlet 312 through the blocking portion 12, and the first opening 101 is opposite to the first fluid outlet 311, so that the first opening 101 is guided from the inlet flow passage 3 through the first fluid outlet 311. In the second position, the valve core 1 blocks the first fluid outlet 311 through the blocking portion 12, and the second opening 102 is opposite to the second fluid outlet 312, so that the second opening 102 is guided from the inlet flow passage 3 through the second fluid outlet 312.

[0032] In the aforementioned example, the first fluid outlet 311, the second fluid outlet 312 and the blocking portion 12 cooperate to achieve the function that the aforementioned valve core 1 guides from the inlet flow passage 3 through the first opening 101 in the first position, and guides from the inlet flow passage 3 through the second opening 102 in the second position.

[0033] In some embodiments, the aforementioned valve core 1 can also be moved to a third position. In the third position, the valve core 1 is opposite to the first fluid outlet 311 through the second opening 102, so that the second opening 102 is in communication with the first fluid outlet 311; the valve core 1 is opposite to the second fluid outlet 312 through the third opening 13, so that the third opening 13 is in communication with the second fluid outlet 312; the valve core 1 is opposite to the first outlet 21 through the first opening 101, so that the first opening 101 is in communication with the first outlet 21; and the valve core 1 blocks the second outlet 22 through the blocking portion 12.

[0034] In the aforementioned example, when the valve core 1 is moved to the third position, the function that the inlet flow passage 3 is only in communication with the first outlet 21 and the second outlet 22 is closed can be achieved.

[0035] In some embodiments, the aforementioned valve core 1 can also be moved to a fourth position. In the fourth position, the valve core 1 is opposite to the second fluid outlet 312 through the first opening 101, so that the first opening 101 is in communication with the second fluid outlet 312; the valve core 1 is opposite to the first fluid outlet 311 through the third opening 13, so that the third opening 13 is in communication with the first fluid outlet 311; the valve core 1 is opposite to the second outlet 22 through the second opening 102, so that the second opening 102 is in communication with the second outlet 22; and the valve core 1 blocks the first outlet 21 through the blocking portion 12.

[0036] In the aforementioned example, when the valve core 1 is moved to the fourth position, the function that the inlet flow passage 3 is only in communication with the second outlet 22 and the first outlet 21 is closed can be achieved.

[0037] In some embodiments, the aforementioned inlet flow passage 3 comprises a first passage segment 31 and a second passage segment 32, one end of the first passage segment 31 serving as an inlet of the inlet flow passage 3, the other end of the first passage segment 31 serving as a first fluid outlet 311, and a connecting port being formed in the middle of the first passage segment 31, the first passage segment 31 being in communication with one end of the second passage segment 32 through the connecting port, the other end of the second passage segment 32 serving as a second fluid outlet 312.

[0038] In the aforementioned example, the first passage segment 31 and the second passage segment 32 cooperate to form the aforementioned inlet flow passage 3.

[0039] In order to achieve the function that the second opening 102 can flow out through the first fluid outlet 21 and the third opening 13 can flow out through the second fluid outlet 22 when the valve core 1 is in the first position, in some embodiments, when the valve core 1 is in the first position, the aforementioned second opening 102 is opposite to the first fluid outlet 21 so that the second opening 102 can flow out through the first fluid outlet 21, and the third opening 13 is opposite to the second fluid outlet 22 so that the third opening 13 can flow out through the second fluid outlet 22.

[0040] In order to achieve the function that the first opening 101 can flow out through the second fluid outlet 22 and the third opening 13 can flow out through the first fluid outlet 21 when the valve core 1 is in the second position, in some embodiments, when the valve core 1 is in the second position, the aforementioned first opening 101 is opposite to the second fluid outlet 22 so that the first opening 101 can flow out through the second fluid outlet 22, and the third opening 13 is opposite to the first fluid outlet 21 so that the third opening 13 can flow out through the first fluid outlet 21.

[0041] In some embodiments, the aforementioned valve body 2 has an inner cavity 20. The aforementioned first fluid outlet 21, second fluid outlet 22 and inlet flow passage 3 all pass through the inner cavity 20. The aforementioned valve core 1 is rotatably arranged in the inner cavity 20 to move relative to the valve body 2 in a rotating manner.

[0042] In the aforementioned example, the valve core 1 can move to the aforementioned first position, second position, third position and fourth position in a rotating manner to facilitate the adjustment of the position of the valve core 1.

[0043] In some embodiments, the aforementioned three-way valve 100 further comprises a motor, and the valve core 1 is driven to rotate by the motor.

[0044] In some embodiments, the aforementioned flow passage 1a includes a flow-through hole 11 extending through the valve core 1, the flow-through hole 11 is a straight hole, one end of the flow-through hole 11 is the aforementioned first opening 101, the other end of the flow-through hole 11 is the aforementioned second opening 102, the third opening 13 is arranged at the middle of the flow-through hole 11, and the center line of the third opening 13 is perpendicular to the center line of the flow-through hole 11, so that when the fluid flows into the flow passage 1a from one of the first opening 101 and the second opening 102, the resistance of the fluid flowing out from the other of the first opening 101 and the second opening 102 is smaller than the resistance of the fluid flowing out from the third opening 13, so as to facilitate the flow rate of the fluid flowing out from the third opening 13 in the flow passage 1a to be smaller than the flow rate of the fluid flowing out from the other of the first opening 101 and the second opening 102.

[0045] In some embodiments, the aforementioned flow-through hole 11 is a circular hole, and the first opening 101 is a circular opening, and the hole diameter of the flow-through hole 11 is consistent with the hole diameter of the first opening 101, so that in cooperation with the aforementioned center line of the third opening 13 being perpendicular to the center line of the flow-through hole 11, the flow rate of the fluid flowing out from the third opening 13 in the flow passage 3 can be smaller than the flow rate of the fluid flowing out from the other of the first opening 101 and the second opening 102 when the fluid flows into the flow passage 3 from one of the first opening 101 and the second opening 102.

[0046] In some embodiments, the aforementioned first passage section 31 is a straight hole section, and the center line of the first passage section 31 coincides with the center line of the first outflow port 21, and the center line of the aforementioned second fluid outlet 312 coincides with the center line of the second outflow port 22. Among them, the first passage section 31 and the second passage section 32 are both circular hole sections, the first outflow port 21 and the second outflow port 22 are both circular ports, the hole diameter of the first passage section 31, the hole diameter of the second passage section 32, the hole diameter of the first outflow port 21, the hole diameter of the second outflow port 22, the hole diameter of the flow-through hole 11 and the hole diameter of the third opening 13 are consistent.

[0047] In some embodiments, the present application also provides a thermal management system, which can include the three-way valve 100 of any one of the above.

[0048] In some embodiments, the aforementioned thermal management system further comprises an air conditioning system, a battery 5 heat exchange branch, and an electrical component 6 heat exchange branch. The air conditioning system has a heat exchanger 4, and the air conditioning system can make the heat exchanger 4 refrigerate or heat through mode switching. The heat exchanger 4 has a first heat exchange channel and a second heat exchange channel that can exchange heat with each other. The heat exchanger 4 is connected in the air conditioning system through the first heat exchange channel. The battery 5 heat exchange branch is used for heat exchange with the battery 5. One end of the battery 5 heat exchange branch is in communication with the first outflow port 21, and the other end of the battery 5 heat exchange branch is in communication with one end of the second heat exchange channel. The electrical component 6 heat exchange branch is used for heat exchange with the electrical component 6. One end of the electrical component 6 heat exchange branch is in communication with the second outflow port 22. One end of the pump body 9 is in communication with the inlet of the inflow channel 3, and the other end of the second heat exchange channel and the other end of the electrical component 6 heat exchange branch are both in communication with the other end of the pump body 9. The one end of the pump body 9 can be the pump body 9 outlet, and the other end of the pump body 9 can be the pump body 9 inlet, that is, the pump body 9 is in communication with the inlet of the inflow channel 3 through the pump body 9 outlet, and the pump body 9 is in communication with the other end of the second heat exchange channel and the other end of the electrical component 6 heat exchange branch through the pump body 9 inlet.

[0049] In some embodiments, the aforementioned heat exchanger 4 can be a plate heat exchanger 4.

[0050] With the requirements of global environmental protection and low carbonization, the future development of the passenger vehicle industry will inevitably be new energy, and with the development of new energy passenger vehicles, national policies are also constantly adjusting, and new subsidy policies require new energy passenger vehicles to develop towards high endurance mileage, low electric energy consumption rate, high battery 5 energy density, and other technical requirements. With the increase of battery 5 capacity and battery 5 energy density of new energy passenger vehicles and the requirement of fast charging of batteries 5, the traditional air cooling cooling method of batteries 5 cannot meet the cooling requirements of batteries 5, and it is necessary to use liquid cooling to cool the batteries 5 of new energy passenger vehicles to improve the efficiency and service life of the batteries 5. In the prior art, in order to improve the efficiency and service life of the battery 5, the current product mainly uses an independent battery 5 thermal management system to cool the battery 5, and an independent heat pump air conditioning unit to cool and heat the whole vehicle. The air conditioning system in the pure electric passenger vehicle is integrated with the battery 5 thermal management system, and part of the refrigeration components (air conditioning shell, compressor, condenser, and electric control system) are shared. The battery 5 thermal management system exchanges heat through the plate heat exchanger 4. The cooling liquid enters the vehicle from the vehicle inlet and is connected to the rubber hose in the vehicle to cool or heat the battery 5 or to cool the electrical component 6. The existing passenger vehicle thermal management air conditioner cannot choose to cool or heat the battery 5 or to cool the electrical component 6.

[0051] In the above example, the thermal management system of the present invention, through the cooperation of the heat exchanger 4 of the air conditioning system, the heat exchange branch of the battery 5, the heat exchange branch of the electrical component 6, the pump body 9 and the aforementioned three-way valve 100, can achieve cooling or heating of the battery 5, or cooling of the electrical component 6.

[0052] Specifically, when valve core 1 moves to the first, second, third, or fourth position, the heat exchange branch of battery 5 and the heat exchange branch of electrical component 6 can be in different states. When heat exchanger 4 is cooling, if valve core 1 moves to the third position, the heat exchange branch of battery 5 can be fully opened, and the heat exchange branch of electrical component 6 can be fully closed. This is recorded as cooling mode one. If valve core 1 moves to the first position, both the heat exchange branch of battery 5 and the heat exchange branch of electrical component 6 can be opened, and the flow rate of the heat exchange branch of battery 5 is greater than that of the heat exchange branch of electrical component 6. In this case, cooling of battery 5 is the primary function, and this is recorded as cooling mode two. When valve core 1 moves to the fourth position, the heat exchange branch of battery 5 can be fully closed, and the heat exchange branch of electrical component 6 can be fully opened. This is recorded as cooling mode three. When valve core 1 moves to the second position, both the heat exchange branch of battery 5 and the heat exchange branch of electrical component 6 can be opened, and the flow rate of the heat exchange branch of battery 5 is less than the flow rate of the heat exchange branch of electrical component 6. At this time, the cooling of electrical component 6 is the main process, which is recorded as cooling mode four.

[0053] When the vehicle is driving in a high-temperature environment or fast charging, battery 5 generates a large amount of heat and is the main heat source, while the electrical components 6 generate normal or low heat. In this case, cooling mode one is used. In cooling mode one, the refrigerant flowing out of heat exchanger 4, which has been deeply cooled, is fully pumped into three-way valve 100 by pump body 9. Due to the valve position setting, the entire flow flows to the heat exchange branch of battery 5 without reservation. The refrigerant flows through the cooling plates or coils inside the battery pack 5, undergoes efficient heat exchange with the high-temperature battery 5, absorbs a large amount of heat, and its own temperature rises significantly. The high-temperature refrigerant carrying the heat of battery 5 then flows entirely into the refrigerant side of heat exchanger 4. Inside heat exchanger 4, its heat is quickly conducted through thin metal plates to the low-temperature refrigerant evaporating on the other side, and the refrigerant is cooled back to the target temperature, completing the cooling process. After absorbing heat, the refrigerant is discharged to the outside environment by the compressor of the air conditioning system. The cooled refrigerant returns to the inlet of pump body 9, ready to start a new round of exclusive battery 5 cooling tasks. The advantages of this mode are: it concentrates all the cooling capacity of the system and the power of the pump body 9 on the battery 5 that needs the most cooling, the cooling flow path is direct and the resistance is small, and it achieves the fastest cooling speed and the highest cooling efficiency for the battery 5.

[0054] When the battery 5 and the electrical component 6 need to be cooled at the same time, but the cooling demand of the battery 5 is more urgent (for example, the battery 5 temperature rises faster in medium-intensity driving), the refrigeration mode two is adopted. In the refrigeration mode two, about 70%-80% of the cooling liquid flowing out of the heat exchanger 4 flows to the battery 5 heat exchange branch, and only 20%-30% flows to the electrical component 6 heat exchange branch. The large flow of the cold carrier ensures the strong cooling of the battery 5; and the small flow of the cold carrier maintains the basic cooling of the electrical component 6. The controller dynamically adjusts the angle of the three-way valve 100 according to the battery 5 temperature sensor signal, to ensure that the battery 5 temperature is always in the optimal interval. The advantage of this mode is that the cooling demand of the battery 5 is prioritized while the cooling of the electrical component 6 is taken into account, which is suitable for the working condition that the battery 5 load is high (such as frequent charging and discharging) and the electrical load is general.

[0055] When the vehicle continuously climbs a slope with high load or runs at high speed, the heat generation of the electrical component 6 becomes the main problem, and the heating demand of the battery 5 is relatively low. At this time, the refrigeration mode three is adopted. The cold carrier flowing out of the heat exchanger 4 is guided to the electrical component 6 cooling loop through the pump body 9 and the three-way valve 100. The cold carrier flows through the liquid cooling plates of the motor controller, DC-DC converter and other high-power components, and carries away a large amount of waste heat generated during operation, and its temperature rises. The temperature of the cold carrier rises after the temperature rises. It is all flowed into the heat exchanger 4, and the heat carried by it is efficiently transferred to the refrigerant, and itself is cooled. The cooled cold carrier returns to the pump body 9 and continues to be used for the cooling of the electrical component 6. The advantage of this mode is that it ensures that the core electrical component 6 can be strongly cooled under high load working condition of the driving system, prevents performance degradation or failure due to overheating, and ensures the power and reliability of the vehicle.

[0056] When the electrical component 6 enters an extremely high load state (such as climbing a slope, accelerating), and the heat generation of the battery 5 is relatively low, the refrigeration mode four is adopted at this time. About 70%-80% of the cooling liquid flow is distributed to the electrical component 6 heat exchange branch to cool the high load driving system; the remaining small part is used to maintain the temperature stability of the battery 5. The electrical component 6 is sufficiently cooled, and the battery 5 is maintained by a small flow under low heating condition. The controller dynamically adjusts the valve position according to the temperature feedback of the electrical component 6, to ensure that the driving system is not overheated. The advantage of this mode is that the cooling resources are tilted to the driving system on the premise of ensuring the safety of the battery 5, which is suitable for the working condition that the driving system cooling requirement is extremely high such as continuous high speed and climbing.

[0057] When the temperature of the battery 5 and the electrical component 6 is not high, the air conditioner refrigeration mode is not needed at this time, and only the self-circulation of the cold carrier can complete the cooling of the battery 5 and the electrical component 6. Figure 1 The four modes in the refrigeration working condition.

[0058] When the heat exchanger 4 is heating, if the valve core 1 of the three-way valve 100 moves to the third position, the battery 5 heat exchange branch can be completely opened, and the electrical component 6 heat exchange branch can be completely closed, which is recorded as heating mode one. If the valve core 1 of the three-way valve 100 moves to the first position, the battery 5 heat exchange branch and the electrical component 6 heat exchange branch can be opened, and the flow of the battery 5 heat exchange branch is greater than that of the electrical component 6 heat exchange branch, which is recorded as heating mode two. The heating mode one corresponds to the heat exchanger 4 heating the battery 5 alone. The heating mode two corresponds to the heat exchanger 4 heating the battery 5 in cooperation with the electrical component 6.

[0059] When the vehicle is started at the initial stage or is stationary in a low-temperature environment, the temperature of the battery 5 is low, and the electrical component 6 has not started to work or the waste heat generated is limited. In this case, the heating mode one is adopted, and the heat exchanger 4 absorbs heat from the air conditioning system refrigeration circuit (for example, absorbs heat from the refrigerant in the system and is heated). Then, the heated heat carrier flows through the battery 5 cooler (for example, the battery 5 cold plate) under the drive of the pump body 9, and transfers heat to the battery 5 to raise the temperature of the battery 5. The heating mode one can quickly and centrally heat the battery 5, and ensures that the battery 5 quickly reaches the optimal working temperature.

[0060] When the vehicle is running, and the electrical component 6 continuously generates considerable waste heat, the heating mode two is adopted. In this mode, the heat exchanger 4 collects the waste heat generated by the electrical component 6 during work and the air conditioning system heat, and most of the heat flows to the battery 5 cooler to provide sufficient heat for the battery 5. The heating mode two realizes the cascade utilization of energy and waste heat recovery, and replaces part of the power consumption of the PTC heater with the waste heat of the electrical component 6, which significantly reduces the energy consumption of the system and helps to extend the cruising range of the passenger car.

[0061] In some embodiments, the present application also provides a vehicle, which can include the three-way valve 100 of any one of the above; or include the heat management system of the above.

[0062] In some embodiments, the vehicle can be an electric vehicle.

[0063] For the convenience of understanding, the overall structure of the present application is described below, and the working principle is described.

[0064] The application builds a highly intelligent and integrated thermal management platform by deeply integrating "one precisely controllable three-way valve 100" with "one high-efficiency heat exchanger 4". The core value lies in: 1. Energy efficiency optimization: the heat exchanger 4 provides high heat exchange efficiency, and the three-way valve 100 realizes "on-demand precise distribution" of cooling capacity. The system always directs the most cooling flow to the most needed place, avoiding energy waste and significantly improving vehicle energy efficiency and cruising range. 2. Dynamic intelligent control: instead of simply "on" or "off", the system can smoothly and steplessly switch among four modes according to real-time working conditions, realizing truly adaptive intelligent thermal management. 3. System integration and reliability: the single three-way valve 100 replaces the complex multi-valve system, simplifying the pipeline, reducing cost, weight and potential failure rate. 4. The heat exchanger 4 as a unified heat exchange core has compact structure and high reliability. The application solves the thermal management problem of electric bus under multiple heat sources and variable working conditions, and has great significance for improving the service life of core three-electricity systems, ensuring driving safety and comfort, and promoting the development of electric vehicle energy-saving technology.

[0065] Among them, the application is aimed at the air conditioning liquid pipe part of the integrated battery 5 thermal management bus. Through the rotary three-way valve 100, the air conditioner can detect and control the three-way valve 100 to control the pipeline system flow direction, cool or heat the battery 5, or cool the electrical components 6.

[0066] Those skilled in the art will readily understand that the advantageous technical features of the above-mentioned modes can be freely combined and superimposed without conflict.

[0067] The above description is only the preferred embodiment of the application and is not intended to limit the application. Any modification, equivalent replacement and improvement made within the spirit and principle of the application shall be included in the protection scope of the application. The above description is only the preferred embodiment of the application and is not intended to limit the application. Any modification, equivalent replacement and improvement made within the spirit and principle of the application shall be included in the protection scope of the application.

Claims

1. A three-way valve (100) comprising a valve body (2) and a movable valve core (1), wherein the valve body (2) has an inlet channel (3), a first outlet (21) and a second outlet (22), and the valve core (1) is provided with a flow passage (1a), wherein the inlet channel (3) is used to communicate with at least one of the first outlet (21) and the second outlet (22) through the flow passage (1a); characterized in that: The flow passage (1a) has a first opening (101), a second opening (102) and a third opening (13); wherein, when fluid flows into the flow passage (3) from either the first opening (101) or the second opening (102), the flow rate of fluid flowing out of the third opening (13) in the flow passage (3) is less than the flow rate flowing out from the other of the first opening (101) and the second opening (102); The valve core (1) is movable to a first position and a second position; in the first position and the second position, the flow passage (3) is drawn from the inlet passage (3) through one of the first opening (101) and the second opening (102); and in the first position, the other of the first opening (101) and the second opening (102) flows out through the first outlet (21), and the third opening (13) flows out through the second outlet (22); in the second position, the other of the first opening (101) and the second opening (102) flows out through the second outlet (22), and the third opening (13) flows out through the first outlet (21).

2. The three-way valve (100) according to claim 1, characterized in that: In the first position, the flow passage (3) draws water from the inlet passage (3) through the first opening (101); and in the second position, the flow passage (3) draws water from the inlet passage (3) through the second opening (102).

3. The three-way valve (100) according to claim 2, characterized in that: The inlet channel (3) has a first fluid outlet (311) and a second fluid outlet (312), and the valve core (1) is provided with a sealing part (12); In the first position, the valve core (1) blocks the second fluid outlet (312) through the blocking part (12), and the first opening (101) is opposite to the first fluid outlet (311), so that the first opening (101) draws fluid from the inlet channel (3) through the first fluid outlet (311); in the second position, the valve core (1) blocks the first fluid outlet (311) through the blocking part (12), and the second opening (102) is opposite to the second fluid outlet (312), so that the second opening (102) draws fluid from the inlet channel (3) through the second fluid outlet (312).

4. The three-way valve (100) according to claim 3, characterized in that: The valve core (1) can also move to a third position. In the third position, the valve core (1) is opposite to the first fluid outlet (311) through the second opening (102), and opposite to the second fluid outlet (312) through the third opening (13), and opposite to the first outlet (21) through the first opening (101). The valve core (1) blocks the second outlet (22) through the blocking part (12).

5. The three-way valve (100) according to claim 3 or 4, characterized in that: The valve core (1) can also be moved to a fourth position, in which the valve core (1) is opposite to the second fluid outlet (312) through the first opening (101), opposite to the first fluid outlet (311) through the third opening (13), and opposite to the second outlet (22) through the second opening (102).

6. The three-way valve (100) according to claim 3 or 4, characterized in that: The inlet channel (3) includes a first channel section (31) and a second channel section (32). One end of the first channel section (31) serves as the inlet of the inlet channel (3), and the other end of the first channel section (31) serves as the first fluid outlet (311). A connection port is provided in the middle of the first channel section (31), and the first channel section (31) is connected to one end of the second channel section (32) through the connection port. The other end of the second channel section (32) serves as the second fluid outlet (312).

7. The three-way valve (100) according to claim 3 or 4, characterized in that: In the first position, the second opening (102) is opposite to the first outlet (21) so that the second opening (102) can flow out through the first outlet (21); and the third opening (13) is opposite to the second outlet (22) so that the third opening (13) can flow out through the second outlet (22); And / or, in the second position, the first opening (101) is opposite to the second outlet (22) so that the first opening (101) can flow out through the second outlet (22); and the third opening (13) is opposite to the first outlet (21) so that the third opening (13) can flow out through the first outlet (21).

8. The three-way valve (100) according to any one of claims 1-4, characterized in that: The valve body (2) has an inner cavity (20), and the first outlet (21), the second outlet (22) and the inlet channel (3) all extend into the inner cavity (20); the valve core (1) is rotatably disposed in the inner cavity (20) so as to move relative to the valve body (2) by rotation.

9. The three-way valve (100) according to any one of claims 1-4, characterized in that: The flow passage (1a) includes a flow hole (11) penetrating the valve core (1). The flow hole (11) is a straight hole. One end of the flow hole (11) serves as the first opening (101), and the other end of the flow hole (11) serves as the second opening (102). The third opening (13) is located in the middle of the flow hole (11), and the center line of the third opening (13) is perpendicular to the center line of the flow hole (11).

10. A thermal management system, characterized in that: Includes the three-way valve (100) according to any one of claims 1-9.

11. The thermal management system according to claim 10, characterized in that: It also includes an air conditioning system, a battery (5) heat exchange branch, and an electrical component (6) heat exchange branch. The air conditioning system has a heat exchanger (4), which can be switched between cooling and heating modes. The heat exchanger (4) has a first heat exchange channel and a second heat exchange channel that can exchange heat with each other. The heat exchanger (4) is connected to the air conditioning system through the first heat exchange channel. The battery (5) heat exchange branch is used to exchange heat with the battery (5). One end of the battery (5) heat exchange branch is connected to the battery (6). The first outlet (21) is connected, and the other end of the heat exchange branch of the battery (5) is connected to one end of the second heat exchange channel; the heat exchange branch of the electrical component (6) is used to exchange heat with the electrical component (6), and one end of the heat exchange branch of the electrical component (6) is connected to the second outlet (22). One end of the pump body (9) is connected to the inlet of the inlet channel (3), and the other end of the second heat exchange channel and the other end of the heat exchange branch of the electrical component (6) are both connected to the other end of the pump body (9).

12. A vehicle, characterized in that: It includes the three-way valve (100) according to any one of claims 1-9; or it includes the thermal management system according to claim 10 or 11.

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