Cooling system and vehicle

Abstract

The utility model discloses a cooling system and a vehicle, and relates to the technical field of vehicle heat management. Comprising at least two to-be-cooled components and a first flow regulating valve, the first flow regulating valve is arranged at the liquid inlet ends of the at least two to-be-cooled components, and the at least two to-be-cooled components are connected in parallel through the first flow regulating valve. According to the cooling system, the at least two to-be-cooled components are connected in parallel through the flow regulating valve, and the cooling requirements of different working conditions can be met through one set of cooling system in a cooling coupling mode. Simplified integration of low-temperature circulation of the whole vehicle can be achieved, and the method has obvious advantages on integration and simplification of a low-temperature cooling system.

Description

Technical Field

[0001] This application relates to the field of vehicle thermal management technology, and more specifically to a cooling system and a vehicle. Background Technology

[0002] As emission regulations become increasingly stringent, passenger vehicle emission and fuel consumption limits are becoming more stringent. To optimize emissions and fuel consumption, automakers widely adopt the EGR (Exhaust Gas Recirculation) + WCAC (Water-cooled Intercooler) combination. However, because exhaust gases are introduced into the intake system, a large amount of condensate is generated, especially after the WCAC. If condensate is not properly controlled, or in low-temperature environments, a large amount of condensate can enter the engine combustion chamber, potentially leading to poor combustion in each cylinder and even the risk of misfire.

[0003] The currently widely adopted solution is to use a separate WCAC circuit for cryogenic cooling. However, in low-temperature environments, the inlet temperature of the WCAC cannot be precisely controlled, which may lead to excessively low outlet temperature of the WCAC, resulting in excessive condensation and consequently causing engine combustion problems. Utility Model Content

[0004] The purpose of this application is to provide a cooling system and a vehicle to solve the aforementioned technical problems in the prior art.

[0005] To achieve the above objectives, the first aspect of this application provides a cooling system, the cooling system comprising: at least two components to be cooled and a first flow regulating valve, wherein the first flow regulating valve is disposed at the liquid inlet end of the at least two components to be cooled, and the at least two components to be cooled are connected in parallel through the first flow regulating valve.

[0006] In this embodiment of the application, the first flow regulating valve has at least three interfaces, one of which is located on the liquid inlet main line, and at least two of the interfaces are respectively connected to the liquid inlet of the component to be cooled.

[0007] In this embodiment, the cooling system is applied to a hybrid vehicle, wherein the cooling system further includes a controller for controlling and adjusting the position of the first flow regulating valve according to the power mode of the hybrid vehicle.

[0008] In this embodiment, the component to be cooled includes a water-cooled intercooler and a heat-generating component connected in parallel. The power mode includes a fuel mode, a pure electric mode, and a hybrid mode. The controller is further configured to perform one or more of the following functions: when the hybrid vehicle is in the fuel mode, controlling the first flow regulating valve to connect the first circuit where the heat-generating component is located; when the hybrid vehicle is in the pure electric mode, controlling the first flow regulating valve to connect the second circuit where the water-cooled intercooler is located; when the hybrid vehicle is in the hybrid mode, controlling the first flow regulating valve to simultaneously connect the first circuit and the second circuit.

[0009] In this embodiment of the application, the heat-generating component includes one or more of the following: a drive motor, an electronic control component, and a power battery.

[0010] In this embodiment of the application, the cooling system further includes: a radiator, a bypass circuit, and a second flow regulating valve, wherein the second flow regulating valve is disposed at the liquid inlet end of the radiator and the bypass circuit, and the radiator and the bypass circuit are connected in parallel through the second flow regulating valve.

[0011] In this embodiment, the cooling system further includes: a temperature sensor for detecting the outlet water temperature in the radiator; and a controller for controlling and adjusting the position of the second flow regulating valve according to the outlet water temperature.

[0012] In this embodiment of the application, the controller is further configured to perform one or more of the following functions: when the outlet water temperature is greater than or equal to a first set value, control the second flow regulating valve to connect to the heat dissipation circuit where the radiator is located; when the outlet water temperature is less than or equal to a second set value, control the second flow regulating valve to connect to the bypass circuit; when the outlet water temperature is less than the first set value and greater than the second set value, control the second flow regulating valve to simultaneously connect the heat dissipation circuit and the bypass circuit.

[0013] In this embodiment, the first flow regulating valve and / or the second flow regulating valve are three-way valves.

[0014] This application also provides a vehicle that includes the cooling system described above.

[0015] Compared to existing technologies that cool components individually, the cooling system of this application connects at least two components to be cooled in parallel via a flow regulating valve, achieving cooling coupling and enabling a single cooling system to simultaneously meet the cooling requirements of different operating conditions. This application enables streamlined integration of the vehicle's low-temperature cycle, offering significant advantages in simplifying the integration of low-temperature cooling systems.

[0016] Other features and advantages of the embodiments of this application will be described in detail in the following detailed description section. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the following detailed description to explain the embodiments of this application, but do not constitute a limitation on the embodiments of this application. In the drawings:

[0018] Figure 1 The schematic diagram illustrates a structural schematic of a cooling system according to an embodiment of this application;

[0019] Figure 2 A schematic diagram of the circuit of a cooling system according to an embodiment of this application is shown.

[0020] Figure 3 This schematically illustrates a circuit diagram of a cooling system in fuel mode according to an embodiment of the present application;

[0021] Figure 4 The schematic diagram illustrates a circuit diagram of a cooling system according to an embodiment of this application in pure electric mode;

[0022] Figure 5 A schematic diagram of the circuit of the cooling system according to an embodiment of this application in hybrid mode is shown. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for illustration and explanation of the embodiments of this application and are not intended to limit the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0024] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0025] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0026] First, this application provides a cooling system 100, which may include at least two components to be cooled and a first flow regulating valve. The first flow regulating valve is disposed at the liquid inlet of the at least two components to be cooled, and the at least two components to be cooled are connected in parallel through the first flow regulating valve. In this application embodiment, as... Figure 1 As shown in the structural diagram, the component to be cooled may include a water-cooled intercooler 120 connected in parallel and a heat-generating component 130. Therefore, the cooling system 100 may include a radiator 110, a water-cooled intercooler 120, and a heat-generating component 130. The heat-generating component 130 may be a heat-generating component on the vehicle, such as a drive motor, electronic control components, or a power battery, especially an electrical device. This application does not limit this.

[0027] like Figure 1 As shown, the water-cooled intercooler 120 is connected in parallel with the heat-generating component 130. The radiator 110 and the water-cooled intercooler 120 form a first heat exchange circuit through a first pipeline, and the radiator 110 and the heat-generating component 130 form a second heat exchange circuit through a second pipeline. Furthermore, the first flow regulating valve is a first connecting valve 140 with at least three ports, one of which is located on the liquid inlet main, and at least two ports are respectively connected to the liquid inlet of the component to be cooled. The first connecting valve 140 is, for example, a three-way valve, which can be connected to both the first and second heat exchange circuits simultaneously and can switch between a first position and a second position. In the first position, the first heat exchange circuit is connected and the second heat exchange circuit is closed; in the second position, the second heat exchange circuit is connected and the first heat exchange circuit is closed.

[0028] The above solution allows for a parallel coupling design between the water-cooled intercooler and the vehicle's heat-generating components. Compared to the case where the water-cooled intercooler is used for cooling alone, this design can increase the inlet temperature of the water-cooled intercooler in low-temperature environments, thereby improving EGR condensation and preventing engine combustion problems.

[0029] In addition, by connecting the engine's water-cooled intercooler 120 in parallel with the vehicle's heat-generating components 130 in a cooling coupling manner, a single cooling system can simultaneously meet the cooling requirements of the engine and electrical components, achieving a simplified integration of the vehicle's low-temperature cycle.

[0030] In this embodiment, the cooling system 100 may further include a bypass circuit and a second flow regulating valve. The second flow regulating valve is located at the inlet of both the radiator 110 and the bypass circuit, and the radiator 110 and the bypass circuit are connected in parallel via the second flow regulating valve. The bypass circuit can also be referred to as a third heat exchange circuit, and is connected in parallel with the radiator 110 via a third pipeline. The second flow regulating valve can be a second connecting valve 150, such as a three-way valve, which can be connected to both the first and third heat exchange circuits simultaneously, and can switch between a third position and a fourth position. In the third position, the first heat exchange circuit is connected and the third heat exchange circuit is closed (normal heat dissipation cycle, also known as the large cycle); in the fourth position, the third heat exchange circuit is connected and the first heat exchange circuit is closed (bypass cycle, also known as the small cycle).

[0031] In this embodiment, the cooling system 100 may further include a temperature sensor 160 for detecting the outlet water temperature in the radiator 110. Additionally, the cooling system 100 may also include a controller for controlling and adjusting the position of the second flow regulating valve based on the outlet water temperature. The controller may further perform one or more of the following functions: when the outlet water temperature is greater than or equal to a first set value, controlling the second flow regulating valve to connect to the heat dissipation circuit where the radiator is located; when the outlet water temperature is less than or equal to a second set value, controlling the second flow regulating valve to connect to a bypass circuit; when the outlet water temperature is less than the first set value but greater than the second set value, controlling the second flow regulating valve to simultaneously connect the heat dissipation circuit and the bypass circuit.

[0032] Specifically, when the outlet water temperature is greater than or equal to the first set value, the second connecting valve 150 is in the third position. When the outlet water temperature is less than or equal to the second set value, the second connecting valve 150 is in the fourth position. It is understood that the second set value should be less than the first set value. In one embodiment, the first set value can be set to 40-70 degrees Celsius, and the second set value can be set to 5-15 degrees Celsius. In this embodiment, when the outlet water temperature is less than the first set value but greater than the second set value, the second connecting valve 150 is located between the third and fourth positions, so that both the first and third heat exchange circuits are connected.

[0033] like Figure 2 As shown, the low-temperature cooling system 100 disclosed in this patent includes components such as a water-cooled intercooler 120, a drive motor, a three-way valve 1, a three-way valve 2, a radiator 110, a water pump, a kettle, and a temperature sensor 160.

[0034] The key features of this application are: by setting two three-way valves, the low-temperature cooling circuit of the water-cooled intercooler 120 and the heat-generating components 130 such as the drive motor are coupled, achieving efficient integration of the low-temperature circuit in hybrid vehicles. Simultaneously, it allows for free switching between fuel mode, pure electric mode, hybrid mode, and large / small circulation modes according to vehicle operating conditions. Furthermore, it enables precise control of the two water flow paths and significantly improves low-temperature EGR condensation.

[0035] In this embodiment, the cooling system 100 can be applied to a vehicle, such as a hybrid vehicle, whose power modes may include fuel mode, pure electric mode, and hybrid mode. The controller can also be used to control and adjust the position of the first flow regulating valve according to the power mode of the hybrid vehicle.

[0036] In one embodiment, when the vehicle is in fuel mode, the controller controls the first flow regulating valve to connect to the first circuit where the heat-generating component is located; that is, it controls the first connecting valve 140 to be in the first position. The fuel mode is designed to meet the heat dissipation requirements of the water-cooled intercooler 120 in fuel mode. Specifically, as... Figure 3 As shown, the second heat exchange circuit where the drive motor is located is closed by the three-way valve 1, and only the first heat exchange circuit where the water-cooled intercooler 120 is located is opened. In addition, the water pump outlet passes through the temperature sensor 160 to determine whether the current water temperature meets the cooling requirements, thereby determining whether it needs to flow through the radiator 110. That is, the command to whether to flow through the radiator 110 can be executed by controlling the three-way valve 2.

[0037] When the vehicle is in pure electric mode, the controller controls the first flow regulating valve to connect to the second circuit where the water-cooled intercooler is located; that is, it controls the first connecting valve 140 to be in the second position. Specifically, when the vehicle is driving in pure electric mode, such as... Figure 4 As shown, the three-way valve 1 closes the first circuit where the water-cooled intercooler 120 is located and opens the second heat exchange circuit where the drive motor is located. In addition, the water pump outlet passes through the temperature sensor 160 to determine whether the current water temperature meets the cooling requirements, thereby determining whether it needs to flow through the radiator 110. That is, the command to whether to flow through the radiator 110 can be executed by controlling the three-way valve 2.

[0038] In this embodiment, when the vehicle is in hybrid mode, the controller controls the first flow regulating valve to simultaneously connect the first circuit and the second circuit; that is, it controls the first connecting valve 140 to be between a first position and a second position, so that both the first heat exchange circuit and the second heat exchange circuit are connected. In other words, when the vehicle is driving in hybrid mode, such as... Figure 5As shown, the three-way valve 1 simultaneously opens the first heat exchange circuit where the water-cooled intercooler 120 is located and the second heat exchange circuit where the drive motor is located. In addition, the water pump outlet passes through the temperature sensor 160 to determine whether the current water temperature meets the cooling requirements, thereby determining whether it needs to flow through the radiator 110. That is, the command to whether to flow through the radiator 110 can be executed by controlling the three-way valve 2.

[0039] In other words, the controller can be used to adjust the position of the first connecting valve 140 between a first position and a second position based on the ratio of fuel power to electric power in hybrid mode. That is, the water flow distribution in the first and second heat exchange circuits can be adjusted by changing the ratio of the three-way valve 1, thereby meeting the different heat exchange requirements of the two circuits.

[0040] The beneficial effects that this application can achieve are:

[0041] 1) By designing the water-cooled intercooler in parallel with the vehicle's heat-generating components, compared to the case where the water-cooled intercooler is cooled separately, the water inlet temperature of the water-cooled intercooler can be raised to a certain extent in low-temperature environments, thereby improving EGR condensation and avoiding engine combustion problems.

[0042] 2) By connecting the engine's water-cooled intercooler in parallel with the heat-generating components on the vehicle, a single cooling system can simultaneously meet the cooling requirements of the engine and electrical components, achieving a simplified and integrated low-temperature cycle for the entire vehicle.

[0043] 3) By setting two three-way valves, it is possible to freely switch between multiple modes such as fuel mode, pure electric mode, hybrid mode, and large and small circulation. It can realize the integration of two low-temperature cooling systems for water-cooled intercooler and vehicle heat-generating components, and achieve precise control of the two circuits. It has obvious advantages in simplifying the integration of low-temperature cooling systems.

[0044] On the other hand, this application also provides a vehicle that may include the cooling system 100 described above.

[0045] The cooling system 100 includes: a radiator, a water-cooled intercooler, and a heat-generating component. The water-cooled intercooler and the heat-generating component are connected in parallel. The radiator and the water-cooled intercooler form a first heat exchange circuit through a first pipe, and the radiator and the heat-generating component form a second heat exchange circuit through a second pipe. A first connecting valve is connected to both the first and second heat exchange circuits and can switch between a first position and a second position. In the first position, the first heat exchange circuit is connected and the second heat exchange circuit is closed. In the second position, the second heat exchange circuit is connected and the first heat exchange circuit is closed.

[0046] In this embodiment of the application, the vehicle is a hybrid vehicle, wherein the first connecting valve is in a first position when the vehicle is in fuel mode; or the first connecting valve is in a second position when the vehicle is in pure electric mode.

[0047] In this embodiment of the application, when the vehicle is in hybrid mode, the first connecting valve is located between the first position and the second position, so that both the first heat exchange circuit and the second heat exchange circuit are connected.

[0048] In this embodiment of the application, the cooling system further includes a controller, configured to control and adjust the position of the first connecting valve between a first position and a second position according to the ratio of fuel power to electric power in hybrid mode.

[0049] In this embodiment of the application, the cooling system further includes: a third heat exchange circuit, which is connected in parallel with the radiator via a third pipeline; and a second connecting valve, which is connected to both the first heat exchange circuit and the third heat exchange circuit, and is switchable between a third position and a fourth position, wherein, in the third position, the first heat exchange circuit is connected and the third heat exchange circuit is closed, and in the fourth position, the third heat exchange circuit is connected and the first heat exchange circuit is closed.

[0050] In this embodiment of the application, the cooling system further includes: a temperature sensor for detecting the outlet water temperature in the radiator, wherein when the outlet water temperature is greater than or equal to a first set value, the second connecting valve is located in a third position; or when the outlet water temperature is less than or equal to a second set value, the second connecting valve is located in a fourth position, wherein the second set value is less than the first set value.

[0051] In this embodiment of the application, when the outlet water temperature is less than the first set value and greater than the second set value, the second connecting valve is located between the third position and the fourth position, so that both the first heat exchange circuit and the third heat exchange circuit are connected.

[0052] In this embodiment, the first connecting valve and / or the second connecting valve are three-way valves.

[0053] In this embodiment of the application, the heat-generating component further includes one or more of the following: a drive motor, an electronic control component, and a power battery.

[0054] The beneficial effects that the vehicle provided in this application can achieve are:

[0055] 1) By designing the water-cooled intercooler in parallel with the vehicle's heat-generating components, compared to the case where the water-cooled intercooler is cooled separately, the water inlet temperature of the water-cooled intercooler can be raised to a certain extent in low-temperature environments, thereby improving EGR condensation and avoiding engine combustion problems.

[0056] 2) By connecting the engine's water-cooled intercooler in parallel with the heat-generating components on the vehicle, a single cooling system can simultaneously meet the cooling requirements of the engine and electrical components, achieving a simplified and integrated low-temperature cycle for the entire vehicle.

[0057] 3) By setting two three-way valves, it is possible to freely switch between multiple modes such as fuel mode, pure electric mode, hybrid mode, and large and small circulation. It can realize the integration of two low-temperature cooling systems for water-cooled intercooler and vehicle heat-generating components, and achieve precise control of the two circuits. It has obvious advantages in simplifying the integration of low-temperature cooling systems.

[0058] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0059] The above are merely embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A cooling system, characterized by, Comprise: at least two components to be cooled, a first flow regulating valve, wherein the first flow regulating valve is arranged at an inlet end of the at least two components to be cooled, and the at least two components to be cooled are connected in parallel through the first flow regulating valve.

2. The cooling system according to claim 1, wherein the first flow regulating valve has at least three interfaces, one of which is arranged on an inlet main line, and at least two of which are respectively connected to the inlet of the components to be cooled.

3. The cooling system according to claim 1 or 2, wherein the cooling system is applied to a hybrid vehicle, and wherein the cooling system further comprises a controller configured to control the position of the first flow regulating valve according to the power mode of the hybrid vehicle.

4. The cooling system according to claim 3, wherein the components to be cooled comprise a water-cooled intercooler and a heat-generating component connected in parallel, and the power mode comprises a fuel mode, an electric mode and a hybrid mode, and wherein the controller is further configured to perform one or more of the following functions: when the hybrid vehicle is in the fuel mode, control the first flow regulating valve to connect the first circuit in which the heat-generating component is located; when the hybrid vehicle is in the electric mode, control the first flow regulating valve to connect the second circuit in which the water-cooled intercooler is located; when the hybrid vehicle is in the hybrid mode, control the first flow regulating valve to simultaneously connect the first circuit and the second circuit.

5. The cooling system according to claim 4, wherein the heat-generating component comprises one or more of the following: a drive motor, an electronic control element and a power battery.

6. The cooling system of claim 1, wherein, The cooling system further comprises: a radiator, a bypass circuit and a second flow regulating valve, wherein the second flow regulating valve is arranged at an inlet end of the radiator and the bypass circuit, and the radiator and the bypass circuit are connected in parallel through the second flow regulating valve.

7. The cooling system of claim 6, wherein, The cooling system further comprises: a temperature sensor configured to detect the outlet water temperature in the radiator; a controller configured to control the position of the second flow regulating valve according to the outlet water temperature.

8. The cooling system according to claim 7, wherein the controller is further configured to perform one or more of the following functions: when the outlet water temperature is greater than or equal to a first set value, control the second flow regulating valve to connect the heat dissipation circuit in which the radiator is located; when the outlet water temperature is less than or equal to a second set value, control the second flow regulating valve to connect the bypass circuit; when the outlet water temperature is less than the first set value and greater than the second set value, control the second flow regulating valve to simultaneously connect the heat dissipation circuit and the bypass circuit.

9. The cooling system according to claim 6, wherein the first flow regulating valve and / or the second flow regulating valve is a three-way valve.

10. A vehicle characterized by comprising: The vehicle comprises the cooling system according to any one of claims 1-9.

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