Thermal management device
The thermal management device addresses the limitations of existing systems by allowing precise control of coolant flow through multiple cycles, enhancing engine and vehicle part thermal management flexibility and accuracy.
Patent Information
- Application Number
- CN202421116308.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-21
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-05-21
AI Technical Summary
Existing thermal management devices are limited to managing engine thermals and cannot adapt to all engine working conditions, lacking flexibility and precision in coolant flow control.
A thermal management device with a housing, ball valve, and external circulation joint, allowing for precise control of coolant flow through multiple cycles, including internal, external, and bypass cycles, via a ball valve that rotates to open and close valves and adjust their degrees of opening.
Enables flexible and accurate thermal management of the engine and other vehicle parts by controlling coolant flow rates in multiple cycles, ensuring optimal engine operation under varying conditions and preventing overheating or undercooling.
Smart Images
Figure CN222228667U_ABST
Abstract
Description
[Technical field]
[0001] The utility model relates to the technical field of thermal management, in particular to a thermal management device based on an electronically controlled actuator. [Background technology]
[0002] In order to reduce fuel consumption (CO2 emissions), shorten engine warm-up time and improve engine reliability, a new all-electronic cooling system (also called thermal management device) is needed to manage the engine thermally. The thermal management device is installed on the engine cylinder block, and it works together with the driving controller (or driving computer) and other thermal management systems to perform comprehensive thermal management control.
[0003] Existing thermal management devices usually adopt mechatronics design, with compact systems and high integration. Existing thermal management devices usually use high-efficiency actuators driven by DC motors and high-precision inductive position sensors to accurately control the rotation angle of low-resistance ball valves, thereby achieving on-demand control of the flow in each branch of the cooling system. Through precise temperature control, the thermal management device can improve the working efficiency of components such as engines. Thereby minimizing friction losses and improving thermal efficiency, reducing fuel consumption and carbon dioxide emissions, shortening engine warm-up time, and improving engine reliability.
[0004] However, the current thermal management device can only perform thermal management on the engine and is not applicable to all working conditions of the engine.
[0005] It should be noted that the above introduction to the technical background is only for the convenience of providing a clear and complete description of the technical solutions of the present application and for the convenience of understanding by those skilled in the art. It cannot be considered that the above technical solutions are well known to those skilled in the art simply because they are described in the background technology section of the present application. [Utility Model Content]
[0006] The utility model aims to provide a thermal management device, which can accurately control the flow of coolant in multiple cycles, so as to perform more flexible and more accurate thermal management on the engine and other parts of the vehicle.
[0007] To achieve the above-mentioned purpose, the utility model provides a thermal management device, which includes a housing, a sealing assembly, a ball valve, and an external circulation joint. The housing includes a main cavity, an internal circulation interface, a coolant inlet, a bypass inlet, and a bypass outlet formed therein. The external circulation joint is installed on the housing, the ball valve is arranged in the main cavity, the ball valve includes a ball valve inner cavity connected to the main cavity and a plurality of ball valve through holes connected to the ball valve inner cavity, the sealing assembly, the external circulation joint, the housing and the ball valve cooperate to form a bypass valve, an internal valve and an external valve, and the opening and closing of each valve in the bypass valve, the internal valve and the external valve as well as the degree of opening can be controlled by rotating the ball valve. When the bypass valve is closed, the coolant enters the main cavity via the first inflow passage, the first inflow passage is: the coolant flows to the bypass outlet through the coolant inlet, and after circulation, the coolant flows into the main cavity through the bypass inlet again, when the bypass valve is opened, the coolant enters the main cavity via the first inflow passage and the second inflow passage, wherein the second inflow passage is: the coolant directly flows into the main cavity through the coolant inlet and the bypass valve; when the inner valve is opened, the coolant in the main cavity is allowed to flow to the inner circulation interface through the inner valve, and after circulation, the coolant enters the coolant inlet again, and when the inner valve is closed, the coolant in the main cavity is prohibited from flowing to the inner circulation interface through the inner valve; when the outer valve is opened, the coolant in the main cavity flows to the outer circulation joint through the outer valve, and after circulation, the coolant enters the coolant inlet again, and when the outer valve is closed, the coolant in the main cavity is allowed to flow to the outer circulation joint through the outer valve.
[0008] Compared with the prior art, the sealing assembly, the external circulation joint, the shell and the ball valve in the utility model cooperate to form a bypass valve, an internal valve and an external valve. By rotating the ball valve, the opening and closing of each valve in the bypass valve, the internal valve and the external valve as well as the degree of opening can be controlled, so that the flow rate of the coolant in multiple circulations including the internal circulation, the external circulation and the bypass circulation can be accurately controlled, thereby achieving more flexible and precise thermal management of the engine and other parts of the vehicle.
[0009] It should therefore be understood that this overview is provided only for the purpose of summarizing some embodiments in order to provide a basic understanding of some aspects of the utility model. Therefore, the above-mentioned embodiments are only examples and should not be interpreted as narrowing the scope or ideas of the utility model in any way. The features, appearances and advantages of various embodiments will be apparent by reading the following detailed description and the accompanying drawings, which illustrate the principles of some embodiments by way of example.
Brief Description of the Drawings
[0010] The present invention will be more easily understood with reference to the accompanying drawings and the following detailed description, wherein the same reference numerals correspond to the same structural components, wherein:
[0011] Figure 1 This is a three-dimensional exploded schematic diagram of a thermal management device in one embodiment of the present invention;
[0012] Figure 2 The three-dimensional assembly diagram of the thermal management device in the utility model in one embodiment from another angle, wherein the actuator has not yet been installed;
[0013] Figure 3 It is a schematic diagram of the top view of the structure of the actuator of the thermal management device in the utility model;
[0014] Figure 4 It is a three-dimensional schematic diagram of the ball valve of the thermal management device in the utility model;
[0015] Figure 5 It is a schematic cross-sectional structural diagram of the thermal management device in the utility model in the first state, wherein the first external valve and the second external valve are opened, the internal valve is closed, and the bypass valve is opened;
[0016] Figure 6 It is a schematic cross-sectional structural diagram of the thermal management device in the utility model in the second state, wherein the first external valve and the second external valve are closed, the internal valve is opened, and the bypass valve is opened;
[0017] Figure 7 It is a schematic cross-sectional structural diagram of the thermal management device in the present utility model in the third state, in which the bypass valve is closed. [Specific embodiment]
[0018] Some embodiments of the present invention will be described more fully below with reference to the accompanying drawings, in which some embodiments are listed, but not all. In fact, various embodiments of the present invention can be embodied in many different forms and should not be construed as limited to the embodiments described herein; on the contrary, these embodiments are provided to make the present invention thorough and complete, and will fully convey the scope of the present invention to those skilled in the art. For example, unless otherwise stated, referring to something as first, second, etc. should not be construed as implying a particular order. In addition, something may be described as being higher than something (unless otherwise stated) when it is actually lower than something, or vice versa; similarly, something described as being on the left may be on the right, or vice versa. The same reference figure number always represents the same element.
[0019] The utility model provides a thermal management device, which can accurately control the flow of coolant in multiple cycles, so that the engine and other parts of the vehicle can be thermally managed more flexibly and accurately. The multiple cycles may include an internal cycle, an external cycle, and a bypass cycle. The internal cycle refers to the circulation of coolant between the thermal management device and the cooling pipeline installed on the engine, the external cycle refers to the circulation of coolant between the cooling pipeline installed on the engine, the thermal management device and the radiator, and the bypass cycle refers to the circulation of coolant between the thermal management device and the cooling pipeline installed on other parts of the car that need heat dissipation. In the utility model, one or more of the internal cycle, the external cycle, and the bypass cycle can be carried out simultaneously, for example, the internal cycle, the external cycle, and the bypass cycle can be carried out simultaneously, the internal cycle and the bypass cycle can be carried out simultaneously, and the external cycle and the bypass cycle can be carried out simultaneously.
[0020] Figure 1 This is a three-dimensional exploded schematic diagram of a thermal management device in one embodiment of the present invention; Figure 2 FIG. 1 is a three-dimensional diagram of another embodiment of the thermal management device of the present invention. Figure 1 and 2 As shown, the thermal management device includes a housing 1 , an actuator 2 , a shaft assembly 3 , a sealing assembly 4 , a ball valve 5 and an external circulation joint 6 .
[0021] The housing 1 includes a main cavity 11, an internal circulation interface 12, a coolant inlet 13, a bypass outlet 14 and a bypass inlet 15 formed therein. The external circulation joint 6 is installed on the housing 1. The ball valve 5 is arranged in the main cavity 11. Figure 4 As shown, the ball valve 5 includes a ball valve inner cavity 53 communicating with the main cavity 11 and a plurality of ball valve through holes communicating with the ball valve inner cavity 53. Figure 5 As shown, the sealing assembly 4, the external circulation joint 6, the housing 1 and the ball valve 5 cooperate to form a bypass valve 81, an inner valve 82 and an outer valve 83. By rotating the ball valve 5, the opening and closing of each valve in the bypass valve 81, the inner valve 82 and the outer valve 83 and the degree of opening can be controlled.
[0022] like Figure 7 As shown, when the bypass valve 81 is closed, the coolant enters the main cavity 11 through the first inflow passage. The first inflow passage is: the coolant flows through the coolant inlet 13 to the bypass outlet 14. After external circulation, the coolant flows into the main cavity 11 through the bypass inlet 15, as shown by the arrow. In this way, the bypass circulation of the coolant can be realized to perform thermal management on other parts of the car that need heat dissipation. Figure 5 and 6As shown, when the bypass valve 81 is opened, the coolant enters the main cavity 11 via the first inflow passage and the second inflow passage, wherein the second inflow passage is: the coolant directly flows into the main cavity 11 through the coolant inlet 13 and the bypass valve 81. At this time, the coolant can enter the main cavity 11 through two inflow passages, and the flow rate of the coolant in the first inflow passage is determined by the external flow resistance.
[0023] like Figure 6 As shown, when the inner valve 82 is opened, the coolant in the main cavity 11 is allowed to flow through the inner valve 82 to the inner circulation interface 12, and after circulation, the coolant enters the coolant inlet 13, thus realizing the inner circulation of the coolant. Figure 6 In the embodiment, the external valve 83 is closed, and the internal valve 82 is in a fully open state, that is, only internal circulation can be performed at this time, and external circulation cannot be performed, and the flow rate of the coolant in the internal circulation is the largest. When the internal valve 82 is closed, Figure 5 As shown, the coolant in the main chamber 11 is prohibited from flowing to the internal circulation interface 12 through the internal valve 82 .
[0024] like Figure 5 As shown, when the external valve 83 is opened, the coolant in the main chamber 11 flows through the external valve 83 to the external circulation joint 6, and then enters the coolant inlet 13 after external circulation, so that the external circulation of the coolant can be realized, thereby achieving temperature regulation of the engine. Figure 5 In the embodiment, the inner valve 82 is closed and the outer valve 83 is in a fully open state. At this time, only the outer circulation can be performed, and the inner circulation cannot be performed. Moreover, the flow rate of the coolant in the outer circulation is the largest. When the outer valve 83 is closed, Figure 6 As shown, the coolant in the main chamber 11 is prohibited from flowing to the external circulation joint 6 through the external valve 83 .
[0025] Figure 5 , 6 The cross-sectional positions of the cross-sectional views in FIG. 7 are different from each other, so the displayed cross-sectional structures are also different.
[0026] In other cases, the external valve 83 and the internal valve 82 can both be open, that is, the external circulation and the internal circulation can be performed at the same time. By accurately controlling the opening degree of the external valve 83, the internal valve 82 and the bypass valve 81, the flow rate of the coolant in the external circulation, the internal circulation and the bypass circulation can be accurately controlled, thereby accurately managing the heat of the engine and other parts of the vehicle.
[0027] In summary, in the present invention, as the ball valve 5 rotates, the inner valve 82 can be closed and the outer valve 83 can be opened, or the inner valve 82 can be opened and the outer valve 83 can be closed, or the inner valve 82 can be opened and the outer valve 83 can be opened.
[0028] like Figure 4 As shown, the ball valve 5 comprises a coaxial first-stage ball valve unit 51 and a second-stage ball valve unit 52. A first ball valve through hole 511 and a second ball valve through hole 512 are formed on the outer spherical surface of the first-stage ball valve unit 51. A third ball valve through hole 521 and a fourth ball valve through hole 522 are formed on the outer spherical surface of the second-stage ball valve unit 52.
[0029] like Figure 5-7 As shown, the housing 1 further includes an inlet chamber 16, an internal circulation pipeline 17 and a bypass pipeline 18. The outside of the inlet chamber is the coolant inlet 13, one end of the bypass pipeline 18 is connected to the inlet chamber 16, the other end of the bypass pipeline 18 is the bypass outlet 14, and the outer end interface of the internal circulation pipeline 17 is the internal circulation interface 12.
[0030] like Figure 1 , 5 As shown, the sealing assembly 4 includes a first external seal 41, a second external seal 42, an internal seal 43 and a bypass seal 44. Each seal is an annular hollow seal. The first external seal 41 is installed at the first inner end interface 61 of the external circulation joint 6, the second external seal 42 is installed at the second inner end interface 62 of the external circulation joint 6, the internal seal 43 is installed at the inner end interface of the internal circulation pipeline 17, and the bypass seal 44 is installed at the interface between the inlet chamber 16 and the main chamber 11.
[0031] The first external seal 41, the first-stage ball valve unit 51, and the first inner end interface 61 of the external circulation joint 6 cooperate to form a first external valve 831, and the second external seal 42, the second-stage ball valve unit 52, and the second inner end interface 62 of the external circulation joint 6 cooperate to form a second external valve 832. The internal seal 43, the first-stage ball valve unit 51, and the inner end interface of the internal circulation pipeline 17 cooperate to form the internal valve 82, and the bypass seal 44, the second-stage ball valve unit 52, and the interface between the inlet chamber and the main chamber cooperate to form the bypass valve 81.
[0032] When the first ball valve through hole 511 or the second ball valve through hole 512 is connected to the first inner end interface 61 of the outer circulation joint 6 through the first outer communication seal 41, the first outer communication valve 831 is opened, otherwise the first outer communication valve 831 is closed. When the third ball valve through hole 521 or the fourth ball valve through hole 522 is connected to the second inner end interface 62 of the outer circulation joint 6 through the second outer communication seal 42, the second outer communication valve 832 is opened, otherwise the second outer communication valve 832 is closed. When the first ball valve through hole 511 or the second ball valve through hole 512 is connected to the inner end interface of the inner circulation pipeline 17 through the inner communication seal 43, the inner communication valve 82 is opened, otherwise the inner communication valve 82 is closed. When the third ball valve through hole 521 or the fourth ball valve through hole 522 is connected to the interface between the inlet chamber 16 and the main chamber 11 through the bypass seal 44, the bypass valve 81 is opened, otherwise the bypass valve 81 is closed.
[0033] As described above, by rotating the ball valve 5, the opening and closing of each valve in the bypass valve 81, the inner valve 82 and the outer valve 83 and the degree of opening can be controlled. By controlling the degree of opening of each valve, the flow of the coolant flowing through each valve can be controlled. Specifically, the flow of the coolant in the bypass cycle can be controlled by controlling the degree of opening of the bypass valve 81, the flow of the coolant in the inner cycle can be controlled by controlling the degree of opening of the inner valve 82, and the flow of the coolant in the outer cycle can be controlled by controlling the degree of opening of the outer valve 83.
[0034] like Figure 1-2 As shown, the actuator 2 receives the control signal of the driving controller and rotates through the output shaft according to the control signal. One end of the rotating shaft 31 of the rotating shaft assembly 3 is connected to the output shaft of the actuator 2, and the other end of the rotating shaft 31 of the rotating shaft assembly 3 transmits the torque to the ball valve 5 through a spline connection. The output shaft of the actuator 2 drives the rotating shaft 31 of the rotating shaft assembly 3 to rotate synchronously, and the rotation of the rotating shaft 31 of the rotating shaft assembly 3 drives the ball valve 5 to rotate synchronously.
[0035] like Figure 1-3 As shown, the actuator 2 includes an electrical plug 21, a DC motor 22, an intermediate gear 23, an output gear 24 and an output shaft 25. The electrical plug 21 receives a control signal from a driving controller and transmits the control signal to the DC motor 22. The output shaft of the DC motor 22 rotates to drive the intermediate gear 23 to rotate, the intermediate gear 23 drives the output gear 24 to rotate, the output gear 24 rotates synchronously with the output shaft 25, and the output shaft 25 drives the shaft 31 of the shaft assembly 3 to rotate synchronously.
[0036] like Figure 1As shown, the actuator 2 also includes a position sensor 26. The crane controller controls the actuator 2 to rotate the ball valve 5 to a predetermined target angle, and the position sensor 2 feeds back the actual angle of the current rotation of the DC motor 22 to the crane controller. The crane controller corrects the rotation of the DC motor 22 of the actuator 2 so that the ball valve 5 rotates to the predetermined target angle. When the ball valve 5 rotates to the predetermined target angle, the crane controller cuts off the power to the DC motor 22. Since the DC motor 22 and the intermediate gear 23 have a self-locking function, the ball valve 5 will remain in the current position at this time.
[0037] like Figure 1 As shown, the housing 1 is connected with an exhaust connector 7, which is installed on the housing 1 and is used to exhaust the gas in the coolant in the housing. The coolant may be cooling water.
[0038] The actuator 2 can be removed under special circumstances. The actuator 2 is independent of the water environment. The shaft assembly 3 is fixed to the housing 1 by screws. After the actuator 2 is removed, the sealing of the water environment will not be affected. This design is to prevent the torque output by the actuator 2 from driving the ball valve 5 after the thermostat is abnormally stuck, and the position of the ball valve 5 is not in the fully open position of the external circulation required for the engine to work over a long distance (the fully open position of the external valve). In this case, after the actuator 2 is removed, the shaft 31 of the shaft assembly 3 can be manually rotated by tools such as a wrench to drive the ball valve 5 to the required opening position of the external circulation. There is a specific indication structure 32 on the shaft assembly 3, which can guide the position of the shaft 31 after rotation. After reaching the specified position, the engine can be cooled down to ensure that the vehicle can limp home.
[0039] The thermal management device in the utility model can adjust the flow rate of coolant entering the radiator to change the circulation range of the coolant according to the different operating conditions of the engine and the temperature of the coolant, so as to adjust the heat dissipation capacity of the cooling system and ensure that the engine operates within a suitable temperature range. At the same time, bypass circulation can be performed to perform thermal management on other components.
[0040] The utility model adjusts the inlet and outlet flow of the coolant through a two-stage ball valve to meet the requirements of different circulation flow rates of the engine, and prevents the engine from being damaged due to excessive temperature due to insufficient coolant flow. Furthermore, through the structural design of the ball valve, it is ensured that the engine can be in a suitable cooling state under different working conditions, and the engine will not be unable to be in the best operating state due to too low or too high temperature.
[0041] Furthermore, through the self-locking function of the DC motor and the intermediate gear, the rotation angle of the ball valve can be accurately controlled through closed-loop control feedback of the position sensor.
[0042] The thermal management device of the utility model has a simple structure and a compact size, thus meeting the compact design requirements of the automobile.
[0043] In combination with the accompanying drawings and the description of the specific embodiments of the present invention, the details of the present invention can be more clearly understood. However, the specific embodiments of the present invention described herein are only used to explain the purpose of the present invention and cannot be understood as limiting the present invention in any way. Under the guidance of the present invention, technicians can conceive of any possible variations based on the present invention, which should be regarded as belonging to the scope of the present invention. It should be noted that when an element is referred to as "disposed on" another element, it can be directly on the other element or there can also be a central element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be a central element at the same time. The terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a mechanical connection or an electrical connection, or it can be the internal communication of two elements, it can be directly connected, or it can be indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are only for illustrative purposes and do not represent the only implementation method.
[0044] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more related listed items.
[0045] Many modifications and other implementations of the utility model involve technicians in the field, who have relevant industry knowledge and some original data. Therefore, it should be understood that the utility model is not limited to the specific embodiments disclosed, but also includes other embodiments modified within the scope of the attached claims. In addition, although the foregoing description and related drawings describe the implementation of specific embodiment combinations of elements and functions, within the scope of the attached claims, elements and functions that are implemented in different combinations by substitution are also included. The attached claims also include elements and function combinations that are different from the elements and functions explicitly described above. Although specific terms are used herein, they are intended to be generally descriptive only and are not used for limiting purposes.
Claims
1. A thermal management device, comprising a housing, a sealing assembly, a ball valve, and an external circulation joint, wherein the housing comprises a main cavity, an internal circulation interface, a coolant inlet, a bypass inlet, and a bypass outlet formed therein, The external circulation joint is mounted on the housing, the ball valve is arranged in the main cavity, the ball valve comprises a ball valve inner cavity communicated with the main cavity and a plurality of ball valve through holes communicated with the ball valve inner cavity, the sealing assembly, the external circulation joint, the housing and the ball valve cooperate to form a bypass valve, an inner valve and an outer valve, and the opening and closing of each valve in the bypass valve, the inner valve and the outer valve as well as the degree of opening can be controlled by rotating the ball valve. When the bypass valve is closed, the coolant enters the main cavity via the first inflow passage, wherein the first inflow passage is: the coolant flows to the bypass outlet through the coolant inlet, and after circulation, the coolant flows into the main cavity through the bypass inlet again, and when the bypass valve is opened, the coolant enters the main cavity via the first inflow passage and the second inflow passage, wherein the second inflow passage is: the coolant flows directly into the main cavity through the coolant inlet and the bypass valve; When the inner valve is opened, the coolant in the main cavity is allowed to flow to the inner circulation interface through the inner valve, and the coolant enters the coolant inlet again after circulation. When the inner valve is closed, the coolant in the main cavity is prohibited from flowing to the inner circulation interface through the inner valve. When the external valve is opened, the coolant in the main cavity flows to the external circulation joint through the external valve, and after circulation, the coolant enters the coolant inlet again. When the external valve is closed, the coolant in the main cavity is allowed to flow to the external circulation joint through the external valve.
2. The thermal management device according to claim 1, characterized in that: As the ball valve rotates, the inner valve can be closed and the outer valve can be opened, or the inner valve can be opened and the outer valve can be closed, or the inner valve can be opened and the outer valve can be opened.
3. The thermal management device according to claim 1, characterized in that: The ball valve comprises a coaxial first-stage ball valve unit and a second-stage ball valve unit. The outer ball surface of the first-stage ball valve unit is formed with a first ball valve through hole and a second ball valve through hole spaced apart from each other, and the outer ball surface of the second-stage ball valve unit is formed with a third ball valve through hole and a fourth ball valve through hole spaced apart from each other. The shell further comprises an inlet chamber, an internal circulation pipeline and a bypass pipeline. The outer side of the inlet chamber is the coolant inlet. One end of the bypass pipeline is connected to the inlet chamber, and the other end of the bypass pipeline is the bypass outlet. The outer end interface of the internal circulation pipeline is the internal circulation interface. The sealing assembly includes a first external seal, a second external seal, an internal seal and a bypass seal, each seal is an annular hollow seal, the first external seal is installed at the first inner end interface of the external circulation joint, the second external seal is installed at the second inner end interface of the external circulation joint, the internal seal is installed at the inner end interface of the internal circulation pipeline, and the bypass seal is installed at the interface between the inlet cavity and the main cavity. The first external-connection seal, the first-stage ball valve unit, and the first inner end interface of the external circulation joint cooperate to form a first external-connection valve; the second external-connection seal, the second-stage ball valve unit, and the second inner end interface of the external circulation joint cooperate to form a second external-connection valve; the inner-connection seal, the first-stage ball valve unit, and the inner end interface of the inner circulation pipeline cooperate to form the inner-connection valve; the bypass seal, the second-stage ball valve unit, and the interface between the inlet cavity and the main cavity cooperate to form the bypass valve. When the first ball valve through hole or the second ball valve through hole is connected to the first inner end interface of the external circulation joint through the first external connection seal, the first external connection valve is opened, otherwise the first external connection valve is closed. When the third ball valve through hole or the fourth ball valve through hole is connected to the second inner end interface of the external circulation joint through the second external sealing member, the second external valve is opened, otherwise the second external valve is closed. When the first ball valve through hole or the second ball valve through hole is connected to the inner end interface of the inner circulation pipeline through the inner through seal, the inner through valve is opened, otherwise the inner through valve is closed. When the third ball valve through hole or the fourth ball valve through hole is connected through the bypass seal and the interface between the inlet chamber and the main chamber, the bypass valve is opened; otherwise, the bypass valve is closed.
4. The thermal management device according to claim 1, characterized in that: It also includes: an actuator, which receives a control signal from the driving controller and rotates through an output shaft according to the control signal; A rotating shaft assembly comprises a rotating shaft, one end of which is connected to the output shaft of the actuator, and the other end of which transmits torque to the ball valve via a spline connection. The rotation of the rotating shaft of the rotating shaft assembly drives the ball valve to rotate synchronously.
5. The thermal management device according to claim 4, characterized in that: The actuator includes an electrical plug, a DC motor, an intermediate gear, an output gear and an output shaft. The electrical plug receives the control signal of the driving controller and transmits the control signal to the DC motor. The output shaft of the DC motor rotates to drive the intermediate gear to rotate. The intermediate gear drives the output gear to rotate. The output gear rotates synchronously with the output shaft. The output shaft drives the shaft of the shaft assembly to rotate synchronously.
6. The thermal management device according to claim 5, characterized in that: The actuator also includes a position sensor, The driving controller controls the actuator to rotate the ball valve to a predetermined target angle, and the position sensor feeds back the actual current rotation angle of the DC motor to the driving controller. The driving controller corrects the rotation of the DC motor of the actuator so that the ball valve rotates to the predetermined target angle.
7. The thermal management device according to claim 5, characterized in that: When the driving controller cuts off the power to the DC motor, the ball valve will remain in the current position because the DC motor and the intermediate gear have a self-locking function.
8. The thermal management device according to claim 1, characterized in that: The shell is connected with an exhaust connector, which is used to exhaust the gas in the coolant.