Automotive Thermal Management System

Abstract

The present application discloses an automobile thermal management system, which includes: a first heat exchange pipeline, which is used for heat exchange with a battery pack and a heater core; a second heat exchange pipeline, which is used for heat exchange with an engine, and the first heat exchange pipeline and the second heat exchange pipeline can be selectively connected; a heat insulation cover, which is sleeved on the exhaust pipe of the engine, and the heat insulation cover is constructed to have a double-layer structure and a heat exchange cavity is defined between the double-layer structure, and the heat exchange cavity can be selectively connected with the first heat exchange pipeline. The automobile thermal management system of the present application, by providing a double-layer heat insulation cover structure, is conducive to heat recovery at the exhaust pipe position, improves the temperature of the passenger compartment, and saves the electric energy required by the PTC for heating the passenger compartment and the battery pack, thereby increasing the vehicle's cruising range. At the same time, it reduces the heat radiation of the exhaust pipe to the surrounding equipment and extends the service life of the surrounding equipment.

Description

Technical Field

[0001] The present application relates to the field of vehicle manufacturing technology, and in particular to an automobile thermal management system. Background Art

[0002] In the related technologies, hybrid electric vehicles are currently mainly heated by engine heat exchange medium and air conditioner electric heater (PTC) in terms of air conditioning heating and battery pack heating. PTC is connected in series in the circulation loop of battery pack and air conditioning heating. When heating the medium, it consumes additional electric energy to convert the electric energy into heat energy. Among them, in high-latitude areas, especially in the early stage of engine startup, the temperature of the heat exchange medium is low, and the heating temperature in the passenger compartment is low, which causes the phenomenon of frozen feet, affecting driving safety; if the temperature of the heat exchange medium is low, if PTC is not turned on, the battery pack temperature cannot be raised to the appropriate range, resulting in a decrease in battery pack performance and a shortened pure electric cruising range. If PTC is turned on, a large amount of electric energy is consumed, which also leads to a decrease in cruising range. When the temperature of the engine exhaust pipe is high, there is a heat damage problem in the exhaust surrounding components in the cabin, and there is room for improvement. Summary of the invention

[0003] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the present application is to propose an automotive thermal management system that can effectively utilize the heat of the engine exhaust to achieve heating of the passenger compartment and reduce heating losses, and the heat shield in the present application has high energy density, strong operability and low cost.

[0004] According to an embodiment of the present application, the automotive thermal management system includes: a first heat exchange pipeline, which is used for heat exchange with a battery pack and a heater core; a second heat exchange pipeline, which is used for heat exchange with an engine, and the first heat exchange pipeline and the second heat exchange pipeline are selectively connected; a heat insulation cover, which is sleeved on the exhaust pipe of the engine, and the heat insulation cover is constructed to have a double-layer structure and define a heat exchange cavity between the double-layer structure, and the heat exchange cavity and the first heat exchange pipeline are selectively connected.

[0005] According to the automotive thermal management system of the embodiment of the present application, a double-layer heat insulation cover structure is provided to facilitate heat recovery at the exhaust pipe position, increase the temperature of the passenger compartment, save the electric energy required by the PTC for heating the passenger compartment and the battery pack, increase the vehicle's cruising range, and at the same time, reduce the heat radiation of the exhaust pipe to the surrounding equipment, extend the service life of the surrounding equipment, and the double-layer heat insulation cover has the advantages of high energy density, strong operability and low cost.

[0006] According to some embodiments of the automotive thermal management system of the present application, the heat shield includes an inner plate, an outer plate and an end plate, the inner plate is sleeved on the outside of the exhaust pipe, the outer plate is sleeved on the outside of the inner plate, the end plate is installed on the end of the outer plate and the end of the inner plate to define the heat exchange cavity, and the inner plate is spaced apart from the outer peripheral wall of the exhaust pipe.

[0007] According to the automotive thermal management system of some embodiments of the present application, the radial spacing between the inner plate and the outer peripheral wall of the exhaust pipe is L1, which satisfies: 3mm≤L1≤15mm.

[0008] According to the automotive thermal management system of some embodiments of the present application, the radial spacing between the inner plate and the outer plate is L2, which satisfies: 1mm≤L2≤10mm.

[0009] According to some embodiments of the automotive thermal management system of the present application, the end plate is connected to the outer plate and extends radially inwardly along the outer plate, and the end of the inner plate is welded to the end plate, and the end plate is welded to the outer peripheral wall of the exhaust pipe.

[0010] According to some embodiments of the automotive thermal management system of the present application, it also includes: a first two-position three-way valve, wherein the first valve port of the first two-position three-way valve and the second valve port of the first two-position three-way valve are connected in series in the first heat exchange pipeline, the first valve port of the first two-position three-way valve and the third valve port of the first two-position three-way valve are connected in series in the second heat exchange pipeline, and the first valve port of the first two-position three-way valve is used to communicate with the second valve port of the first two-position three-way valve or the third valve port of the first two-position three-way valve; a second two-position three-way valve, wherein the first valve port of the second two-position three-way valve and the second valve port of the second two-position three-way valve are connected in series in the first heat exchange pipeline, the third valve port of the second two-position three-way valve is connected with the heat exchange chamber, and the first valve port of the second two-position three-way valve is used to communicate with the second valve port of the second two-position three-way valve or the third valve port of the second two-position three-way valve.

[0011] According to the automotive thermal management system of some embodiments of the present application, a PTC heater is provided in the first heat exchange pipeline, and the PTC heater can be selectively turned on.

[0012] According to the automotive thermal management system of some embodiments of the present application, a first water pump and a first temperature sensor are provided in the first heat exchange pipeline; a second water pump, a second temperature sensor and an overflow tank are provided in the second heat exchange pipeline.

[0013] According to the automotive thermal management system of some embodiments of the present application, the heater core includes a front zone heater core and a rear zone heater core, and the heat exchange pipeline of the front zone heater core, the heat exchange pipeline of the rear zone heater core and the heat exchange pipeline of the battery pack are respectively connected in parallel in the first heat exchange pipeline.

[0014] According to the automotive thermal management system of some embodiments of the present application, an exhaust catalyst and a flexible connection are arranged in sequence between the engine and the exhaust pipe.

[0015] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 It is a schematic diagram of the structure of an automobile thermal management system according to an embodiment of the present application.

[0018] Reference numerals:

[0019] Automotive thermal management system 100,

[0020] first heat exchange pipeline 1, PTC heater 11, first water pump 12, first temperature sensor 13,

[0021] The second heat exchange pipeline 2, the second water pump 21, the second temperature sensor 22, the overflow tank 23, the thermostat 24,

[0022] Heat insulation cover 3, inner plate 31, outer plate 32, end plate 33, heat exchange cavity 34,

[0023] Battery pack 41, front zone heater core 42, rear zone heater core 43, engine 44, exhaust catalyst 45, flexible connection 46, exhaust pipe 47,

[0024] a first two-position three-way valve 5, a first valve port 51 of the first two-position three-way valve, a second valve port 52 of the first two-position three-way valve, a third valve port 53 of the first two-position three-way valve,

[0025] The second 2-position 3-way valve 6 , a first valve port 61 of the second 2-position 3-way valve, a second valve port 62 of the second 2-position 3-way valve, and a third valve port 63 of the second 2-position 3-way valve. DETAILED DESCRIPTION

[0026] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0027] Reference below Figure 1 An automotive thermal management system 100 according to an embodiment of the present application is described. The automotive thermal management system 100 can be used to cool the engine 44, and can also be used to heat or cool the passenger compartment. In specific use, the heat at the exhaust pipe 47 of the engine 44 can be used to reduce the heating cost of the passenger compartment, and the waste heat in the exhaust of the engine 44 can be well utilized to improve the heat utilization efficiency. The heat shield 3 in the present application has the advantages of high energy density, strong operability, and low cost.

[0028] like Figure 1 As shown, the automotive thermal management system 100 according to the embodiment of the present application includes: a first heat exchange pipeline 1, a second heat exchange pipeline 2 and a heat insulation cover 3.

[0029] The first heat exchange pipeline 1 is used for heat exchange with the battery pack 41 and the heater core. The battery pack 41 and the heater core are connected in parallel in the first heat exchange pipeline 1. Figure 1 As shown, the heater core includes a front heater core 42 and a rear heater core 43, and the heat exchange pipelines of the front heater core 42, the heat exchange pipelines of the rear heater core 43 and the heat exchange pipelines of the battery pack 41 are respectively connected in parallel in the first heat exchange pipeline 1. In this way, when the heat exchange medium flows in the first heat exchange pipeline 1, the heat exchange medium can simultaneously enter the heat exchange pipelines of the front heater core 42, the heat exchange pipelines of the rear heater core 43 and the heat exchange pipelines of the battery pack 41, so that the heat exchange medium can perform good heat exchange with the front heater core 42, the rear heater core 43 and the battery pack 41.

[0030] Therefore, when the heat exchange medium flows in the first heat exchange pipeline 1, it can be used to cool the front zone heater core 42, the rear zone heater core 43 and the battery pack 41, thereby cooling the passenger compartment and the battery pack 41 in a high temperature environment, and can also be used to heat the front zone heater core 42, the rear zone heater core 43 and the battery pack 41, thereby heating and raising the temperature in a low temperature environment.

[0031] The second heat exchange pipeline 2 is used for exchanging heat with the engine 44, that is, the second heat exchange pipeline 2 is connected to the cooling water circuit of the engine 44. In this way, when the heat exchange medium in the second heat exchange pipeline 2 flows, it can heat or cool the engine 44, so that the state of the engine 44 can more appropriately meet the actual usage requirements.

[0032] Among them, the first heat exchange pipeline 1 and the second heat exchange pipeline 2 can be selectively connected, that is, the first heat exchange pipeline 1 and the second heat exchange pipeline 2 can realize medium exchange, so that the heat exchange medium can flow between the first heat exchange pipeline 1 and the second heat exchange pipeline 2. In this way, when the first heat exchange pipeline 1 and the second heat exchange pipeline 2 are disconnected, the first heat exchange pipeline 1 and the second heat exchange pipeline 2 are respectively used to exchange heat for the devices connected in series in their respective pipelines, and when the first heat exchange pipeline 1 and the second heat exchange pipeline 2 are connected, the two share the heat exchange medium to achieve the effect of synchronous cooling and heating, and the heat generated by the engine 44 can also flow to the second heat exchange pipeline 2 through the first heat exchange pipeline 1 to exchange heat with the battery pack 41 and the heater core in the second heat exchange pipeline 2, so as to maximize the use of heat.

[0033] The heat shield 3 is sleeved on the exhaust pipe 47 of the engine 44 . The heat shield 3 is constructed to have a double-layer structure and defines a heat exchange cavity 34 between the double-layer structures. The heat exchange cavity 34 can be selectively communicated with the first heat exchange pipeline 1 .

[0034] It can be understood that the heat carried in the exhaust gas of the exhaust pipe 47 of the engine 44 can be conducted to the heat exchange chamber 34 through the peripheral wall of the heat insulation cover 3, and when the heat exchange chamber 34 is connected to the first heat exchange pipeline 1, the heat in the exhaust pipe 47 can be transferred to the battery pack 41 and the heater core through the first heat exchange pipeline 1 to heat the passenger compartment and the battery pack 41, or it can also be transported to the engine 44 by the first heat exchange pipeline 1 and the second heat exchange pipeline 2 to feed back to the engine 44 to heat the engine 44.

[0035] Among them, the heat insulation cover 3 is constructed with a double-layer structure, which improves the heat insulation effect by about 50% compared with the single-layer structure, can better ensure the thermal safety of the components in the cabin, and is conducive to heating the heat exchange medium through convection of the heat radiated from the exhaust pipe 47, so as to provide heat for the heater core and the battery pack 41. In this way, not only the heat recovery in the exhaust pipe 47 of the engine 44 is realized, but also when the PTC is not working or working at low power, the warm air temperature can be increased while saving electricity, increasing the cruising range, effectively increasing the warm air temperature, preventing the foot temperature from being too low in winter, and improving driving safety. At the same time, the heat insulation cover 3 can reduce the heat radiation of the exhaust pipe 47 to the surrounding equipment, which is conducive to extending the service life of the surrounding equipment, and the double-layer heat insulation cover 3 has the advantages of high energy density, strong operability and low cost.

[0036] According to the automotive thermal management system 100 of the embodiment of the present application, a double-layer heat insulation cover 3 is provided to facilitate heat recovery at the exhaust pipe 47, increase the temperature of the passenger compartment, save the electric energy required by the PTC for heating the passenger compartment and the battery pack 41, increase the vehicle's cruising range, and at the same time, reduce the heat radiation of the exhaust pipe 47 to the surrounding equipment, extend the service life of the surrounding equipment, and the heat insulation cover 3 has the advantages of high energy density, strong operability and low cost.

[0037] In some embodiments, the heat shield 3 includes an inner plate 31, an outer plate 32 and an end plate 33. The inner plate 31 is sleeved outside the exhaust pipe 47, the outer plate 32 is sleeved outside the inner plate 31, and the end plate 33 is installed at the end of the outer plate 32 and the end of the inner plate 31 to define a heat exchange chamber 34. The inner plate 31 is spaced apart from the outer peripheral wall of the exhaust pipe 47.

[0038] That is to say, the inner plate 31 and the outer plate 32 in the present application can be constructed as a cylindrical structure, so that the exhaust pipe 47, the inner plate 31 and the outer plate 32 are sequentially arranged from the inside to the outside. Among them, there are two end plates 33, and the two end plates 33 are located at both ends of the heat insulation cover 3, that is, Figure 1 As shown, an end plate 33 located on the left side is used to connect with the left end of the inner plate 31 and the left end of the outer plate 32 and close the left end of the heat exchange chamber 34, and an end plate 33 located on the right side is used to connect with the right end of the inner plate 31 and the right end of the outer plate 32 and close the right end of the heat exchange chamber 34.

[0039] Among them, Figure 1 As shown, pipe interfaces are provided on both end plates 33, and the two pipe interfaces are connected to the first heat exchange pipeline 1 through pipes, so that the heat exchange cavity 34 is connected in parallel with the first heat exchange pipeline 1. In this way, the heat exchange medium in the first heat exchange pipeline 1 can pass through the end plate 33 from one of the pipe interfaces and enter the heat exchange cavity 34, and realize heat exchange with the exhaust pipe 47 in the heat exchange cavity 34 through the inner plate 31, and flow out of the heat exchange cavity 34 through the end plate 33 from the other pipe interface and enter the first heat exchange pipeline 1.

[0040] like Figure 1 As shown, the radial extension of the end plate 33 is greater than the distance between the inner plate 31 and the outer plate 32. Figure 1 As shown, the radial inner end of the end plate 33 protrudes inward from the inner plate 31, and the end plate 33 is fixedly connected to the outer peripheral wall of the exhaust pipe 47 to separate the inner plate 31 from the outer peripheral wall of the exhaust pipe 47. In this way, during the specific installation, the end plate 33 can be fixed to the outer peripheral wall of the exhaust pipe 47, and there is no need to fix the inner plate 31 and the exhaust pipe 47 over a large area, which helps to reduce the difficulty of installation.

[0041] In some embodiments, the radial spacing between the inner plate 31 and the outer wall of the exhaust pipe 47 is L1, satisfying: 3mm≤L1≤15mm, such as L1 can be 5mm, or L1 can be 8mm, or L1 can be 12mm. Therefore, when the radial spacing between the inner plate 31 and the outer wall of the exhaust pipe 47 is set within the above range, it can ensure that the heat in the exhaust pipe 47 can be transferred to the heat exchange chamber 34 through the inner plate 31 to the maximum extent, and the efficiency of heat transfer can be improved by reducing the thickness of the inner plate 31.

[0042] In some embodiments, the radial spacing between the inner plate 31 and the outer plate 32 is L2, which satisfies: 1mm≤L2≤10mm. For example, L2 can be 3mm, or L2 can be 7mm, or L2 can be 9mm. Therefore, when the radial spacing between the inner plate 31 and the outer plate 32 is set in the above range, it can be ensured that there is sufficient heat exchange space in the heat exchange cavity 34 for the heat exchange medium to flow, and if Figure 1 As shown, the flow cross section in the heat exchange chamber 34 is larger than the flow cross section of the external pipe, which is beneficial to reducing the flow velocity of the heat exchange medium in the heat exchange chamber 34, thereby ensuring sufficient heat exchange between the heat exchange medium and the airflow in the exhaust pipe 47.

[0043] In some embodiments, the outer plate 32 is a circular tube structure, the inner plate 31 is also a circular tube structure and the diameter of the inner plate 31 is smaller than the diameter of the outer plate 32, the end plate 33 is connected to the outer plate 32 and the end plate 33 extends radially inwardly of the outer plate 32, wherein the end plate 33 is an annular plate structure with a hole in the middle and matched with the exhaust pipe 47, and the end plate 33 can be welded to the end of the outer plate 32, the end of the inner plate 31 is welded to the end plate 33, and the end plate 33 is welded to the outer peripheral wall of the exhaust pipe 47. That is to say, when forming the heat shield 3, the inner plate 31, the outer plate 32 and the end plate 33 can be welded into a whole and then sleeved on the exhaust pipe 47, and the end plate 33 is welded and fixed to the exhaust pipe 47. In this way, it is convenient to realize the structural forming of the heat shield 3 and it is beneficial to improve the assembly efficiency.

[0044] In some embodiments, the automotive thermal management system 100 further includes a first two-position three-way valve 5 and a second two-position three-way valve 6 .

[0045] Among them, Figure 1As shown, the first valve port 51 of the first two-position three-way valve and the second valve port 52 of the first two-position three-way valve are connected in series in the first heat exchange pipeline 1, the first valve port 51 of the first two-position three-way valve and the third valve port 53 of the first two-position three-way valve are connected in series in the second heat exchange pipeline 2, and the first valve port 51 of the first two-position three-way valve is used to communicate with the second valve port 52 of the first two-position three-way valve or the third valve port 53 of the first two-position three-way valve, the first valve port 61 of the second two-position three-way valve and the second valve port 62 of the second two-position three-way valve are connected in series in the first heat exchange pipeline 1, the third valve port 63 of the second two-position three-way valve is connected with the heat exchange chamber 34, and the first valve port 61 of the second two-position three-way valve is used to communicate with the second valve port 62 of the second two-position three-way valve or the third valve port 63 of the second two-position three-way valve.

[0046] In this way, the connection state of the first two-position three-way valve 5 and the second two-position three-way valve 6 can be switched to switch the connection state of the first heat exchange pipeline 1, the second heat exchange pipeline 2 and the heat exchange chamber 34, thereby switching the working mode of the automobile thermal management system 100, which is beneficial to meet the usage requirements under different working conditions.

[0047] Specifically, at high latitudes, when the temperature is low and the engine 44 is just started, the temperature inside the engine 44 is low and there is no need to cool the engine 44. The first heat exchange pipeline 1 can be disconnected from the second heat exchange pipeline 2, and the heat in the exhaust pipe 47 of the engine 44 can be used to heat the battery pack 41 and the passenger compartment. In this way, the first valve port 51 of the first two-position three-way valve can be connected to the second valve port 52 of the first two-position three-way valve, and the first valve port 51 of the first two-position three-way valve can be connected to the third valve port 52 of the first two-position three-way valve. The valve port 53 is disconnected, and at the same time, the first valve port 61 of the second two-position three-way valve is connected to the third valve port 63 of the second two-position three-way valve and the first valve port 61 of the second two-position three-way valve is disconnected from the second valve port 62 of the second two-position three-way valve, so that there is no medium exchange between the first heat exchange pipeline 1 and the first heat exchange pipeline 1, and the heat absorbed by the heat exchange medium of the heat exchange chamber 34 from the exhaust pipe 47 can be transported to the battery pack 41 and the heater core through the first heat exchange pipeline 1, thereby achieving heating of the battery pack 41 and the passenger compartment.

[0048] Therefore, in the present application, the connection state of the automobile thermal management system 100 can be achieved through the first two-position three-way valve 5 and the second two-position three-way valve 6, so that the automobile thermal management system 100 can meet the heating or cooling needs in different temperatures, different areas or different working scenes, thereby ensuring that the passenger compartment, the battery pack 41 and the engine 44 are all in a suitable temperature state, improving user comfort and ensuring the safety of the vehicle.

[0049] In some embodiments, a PTC heater 11 is provided in the first heat exchange pipeline 1, and the PTC heater 11 can be selectively turned on. That is, in the present application, by providing the PTC heater 11 in the first heat exchange pipeline 1, the PTC heater 11 can be used together with the heat insulation cover 3 to provide heat for the first heat exchange pipeline 1 or the second heat exchange pipeline 2, thereby improving the heating efficiency of the automotive thermal management system 100.

[0050] It is understandable that when the ambient temperature of the vehicle is low, when the heat at the exhaust pipe 47 in the heat insulation cover 3 cannot promptly and effectively heat the battery pack 41, the engine 44 and the passenger compartment, the PTC heater 11 can be turned on to achieve active heating, especially when the temperature of the engine 44 is low and cannot be effectively started. At this time, the heat exchange cavity 34 of the heat insulation cover 3 cannot provide heat to the first heat exchange pipeline 1, and the PTC heater 11 can be used to heat the engine 44, thereby assisting the hot start of the engine 44 and facilitating the start of the vehicle.

[0051] Among them, the PTC heater 11 in the present application can be composed of a PTC ceramic heating element and an aluminum tube, which has the advantages of small thermal resistance and high heat exchange efficiency. It is an automatic constant temperature and power-saving electric heater.

[0052] In some embodiments, Figure 1 As shown, the first heat exchange pipeline 1 is provided with a first water pump 12 and a first temperature sensor 13 , and the second heat exchange pipeline 2 is provided with a second water pump 21 , a second temperature sensor 22 and an overflow tank 23 .

[0053] That is, by setting the first water pump 12 in the first heat exchange pipeline 1, the first water pump 12 can provide driving force for the heat exchange medium in the first heat exchange pipeline 1, so that the heat exchange medium in the first heat exchange pipeline 1 has sufficient flow pressure, ensuring the heat exchange efficiency for the battery pack 41 and the heater core. At the same time, the second water pump 21 is set in the second heat exchange pipeline 2, and the second water pump 21 can provide driving force for the heat exchange medium in the second heat exchange pipeline 2, so that the heat exchange medium in the second heat exchange pipeline 2 has sufficient flow pressure, ensuring the heat exchange efficiency for the engine 44, and the second heat exchange pipeline 2 is also provided with a thermostat 24.

[0054] It can be understood that the first heat exchange pipeline 1 and the second heat exchange pipeline 2 can be selectively connected, and when the first heat exchange pipeline 1 and the second heat exchange pipeline 2 are disconnected, the heat exchange medium in each pipeline can be driven to flow through the first water pump 12 and the second water pump 21 respectively, and when the first heat exchange pipeline 1 and the second heat exchange pipeline 2 are connected, the first water pump 12 and the second water pump 21 together serve as the driving device of the entire pipeline, thereby enabling the automotive thermal management system 100 to have sufficient driving force to ensure the flow pressure at different pipeline positions when it is in different connection states.

[0055] Among them, the first temperature sensor 13 and the second temperature sensor 22 can respectively detect the temperatures in the first heat exchange pipeline 1 and the second heat exchange pipeline 2, and the valve port states of the first two-position three-way valve 5 and the second two-position three-way valve 6 can be controlled by the detection results of the first temperature sensor 13 and the second temperature sensor 22, so that the pipeline connection state of the automobile thermal management system 100 can meet the actual usage requirements.

[0056] In some embodiments, an exhaust catalyst 45 and a flexible connection 46 are sequentially arranged between the engine 44 and the exhaust pipe 47, so that the gas at the exhaust port of the engine 44 can pass through the exhaust catalyst 45 and the flexible connection 46 in sequence and enter the exhaust pipe 47, wherein the exhaust catalyst 45 can catalytically treat the exhaust gas to ensure that the gas exhausted by the engine 44 complies with the provisions of the national standard, and the setting of the flexible connection 46 is conducive to reducing the restrictions of the vehicle body structure on the installation position of the exhaust pipe 47, thereby improving the flexibility of the exhaust pipe 47 route setting.

[0057] The following is combined with Figure 1 Describe the connection and working state of the automotive thermal management system 100 of the present application under different working conditions:

[0058] Among them, when the vehicle is at a high latitude, the temperature is low and the engine 44 has just started (to maintain the temperature of the engine 44, the thermostat 24 is closed), it is a joint heating mode of the heat insulation cover 3 and the PTC heater 11, and the heat exchange medium circulates among the first water pump 12, the second two-position three-way valve 6, the heat exchange chamber 34, the PTC heater 11, the battery pack 41, the front zone heater core 42, the rear zone heater core 43, and the first two-position three-way valve 5, and the heat exchange medium does not flow back to the engine 44. When the first temperature sensor 13 determines that the temperature of the heat exchange medium is too low, the second two-position three-way valve 6 is actuated, and the heat exchange medium flows into the heat exchange chamber 34 of the heat insulation cover 3, and the inner layer plate 31 absorbs the exhaust radiation for heating. If the temperature is still too low, the PTC is started again for auxiliary heating.

[0059] After the thermostat 24 is turned on, it is the heating mode of the engine 44. The heat exchange medium circulates among the thermostat 24, the first water pump 12, the second two-position three-way valve 6, the heat exchange chamber 34, the PTC heater 11, the battery pack 41, the front zone heater core 42, the rear zone heater core 43, the first two-position three-way valve 5, the second temperature sensor 22, the second water pump 21, the overflow tank 23, and the engine 44. The heat exchange medium flows back to the engine 44. When the first temperature sensor 13 determines that the temperature of the heat exchange medium is too low, the second two-position three-way valve 6 is actuated, and the heat exchange medium flows into the heat exchange chamber 34 of the heat insulation cover 3, and is heated by the inner plate 31 absorbing the exhaust radiation. If the temperature is still too low, the PTC heater 11 is started for auxiliary heating. Thus, the heat exchange requirements under different operating conditions can be met.

[0060] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0061] In the description of this application, "first feature" or "second feature" may include one or more of the features.

[0062] In the description of the present application, “plurality” means two or more.

[0063] In the description of the present application, a first feature being “on” or “under” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact with each other but are in contact with each other via another feature therebetween.

[0064] In the description of the present application, “above”, “over” and “above” a first feature to a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0065] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0066] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. An automotive thermal management system (100), characterized in that: include: A first heat exchange pipeline (1), the first heat exchange pipeline (1) being used for heat exchange with a battery pack (41) and a heater core; a second heat exchange pipeline (2), the second heat exchange pipeline (2) being used for exchanging heat with the engine (44), the first heat exchange pipeline (1) and the second heat exchange pipeline (2) being selectively connectable; a heat exchange medium circulates in the first heat exchange pipeline (1) and the second heat exchange pipeline (2); A heat shield (3), the heat shield (3) being sleeved on an exhaust pipe (47) of the engine (44), the heat shield (3) being constructed to have a double-layer structure and defining a heat exchange cavity (34) between the double-layer structure, the heat exchange cavity (34) being selectively connected to the first heat exchange pipeline (1); the heat shield (3) comprising an inner plate (31), an outer plate (32) and an end plate (33), the inner plate (31) being sleeved on the outside of the exhaust pipe (47), the outer plate (32) being sleeved on the inner plate (31), the end plate (33) is installed at the end of the outer plate (32) and the end of the inner plate (31) to define the heat exchange chamber (34), and the inner plate (31) is separated from the outer peripheral wall of the exhaust pipe (47); the radial spacing between the inner plate (31) and the outer peripheral wall of the exhaust pipe (47) is L1, which satisfies: 3mm≤L1≤15mm; the radial spacing between the inner plate (31) and the outer plate (32) is L2, which satisfies: 1mm≤L2≤10mm.

2. The automotive thermal management system (100) according to claim 1, characterized in that: The end plate (33) is connected to the outer plate (32) and extends radially inwardly of the outer plate (32), and the end of the inner plate (31) is welded to the end plate (33), and the end plate (33) is welded to the outer peripheral wall of the exhaust pipe (47).

3. The automotive thermal management system (100) according to any one of claims 1 to 2, characterized in that: Also includes: a first two-position three-way valve (5), wherein a first valve port (51) of the first two-position three-way valve and a second valve port (52) of the first two-position three-way valve are connected in series in the first heat exchange pipeline (1), and the first valve port (51) of the first two-position three-way valve and a third valve port (53) of the first two-position three-way valve are connected in series in the second heat exchange pipeline (2), and the first valve port (51) of the first two-position three-way valve is used to communicate with the second valve port (52) of the first two-position three-way valve or the third valve port (53) of the first two-position three-way valve; A second two-position three-way valve (6), wherein a first valve port (61) of the second two-position three-way valve and a second valve port (62) of the second two-position three-way valve are connected in series in the first heat exchange pipeline (1), a third valve port (63) of the second two-position three-way valve is communicated with the heat exchange chamber (34), and the first valve port (61) of the second two-position three-way valve is used to communicate with the second valve port (62) of the second two-position three-way valve or the third valve port (63) of the second two-position three-way valve.

4. The automotive thermal management system (100) according to any one of claims 1-2, characterized in that: A PTC heater (11) is provided in the first heat exchange pipeline (1), and the PTC heater (11) can be selectively turned on.

5. The automotive thermal management system (100) according to any one of claims 1 to 2, characterized in that: The first heat exchange pipeline (1) is provided with a first water pump (12) and a first temperature sensor (13); The second heat exchange pipeline (2) is provided with a second water pump (21), a second temperature sensor (22) and an overflow tank (23).

6. The automotive thermal management system (100) according to any one of claims 1-2, characterized in that: The heater core comprises a front zone heater core (42) and a rear zone heater core (43); the heat exchange pipeline of the front zone heater core (42), the heat exchange pipeline of the rear zone heater core (43) and the heat exchange pipeline of the battery pack (41) are respectively connected in parallel to the first heat exchange pipeline (1).

7. The automotive thermal management system (100) according to any one of claims 1-2, characterized in that: An exhaust catalyst (45) and a flexible connection (46) are arranged in sequence between the engine (44) and the exhaust pipe (47).

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