Thermal management system and vehicle

Abstract

A vehicle, comprising a thermal management system, wherein the thermal management system comprises an engine, a power battery and a silencer. An engine cooling water path is formed in the engine, the engine is provided with an exhaust port, the power battery is spaced apart from the engine, the silencer is connected to the exhaust port, the silencer is provided with a silencer cooling water path, and the silencer cooling water path is connected in parallel to the engine cooling water path.

Description

Thermal management system and vehicle

[0001] Cross-references to related applications

[0002] This application claims priority to Chinese patent application No. 202411045651.2, entitled "Thermal Management System and Vehicle", filed with the China National Intellectual Property Administration on July 31, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This disclosure relates to the field of vehicle technology, and in particular to a thermal management system and a vehicle. Background Technology

[0004] Currently, hybrid vehicles are equipped with a rear-mounted muffler, and the exhaust pipe passes through the battery pack, which can cause heat damage to the battery pack and the components around the exhaust pipe. When the vehicle is in pure electric mode, the engine does not work, and the heater provides heat to the interior of the vehicle, which can cause insufficient engine coolant temperature, thus increasing the overall energy consumption of the vehicle.

[0005] In related technologies, exhaust heat recovery is divided into front-end exhaust heat recovery and rear-end exhaust heat recovery. Front-end exhaust heat recovery is achieved through an exhaust gas recirculation system, while rear-end exhaust heat recovery is achieved through a heat exchanger. The heat exchanger is controlled by a temperature control valve to control the flow of exhaust gas. At the same time, the temperature control valve also controls the flow of coolant. As a result, rear-end exhaust heat recovery occupies a large volume and is difficult to install in a vehicle.

[0006] Public content

[0007] This disclosure aims to address at least one of the technical problems existing in the prior art. To this end, one object of this disclosure is to provide a thermal management system that can reduce the thermal damage to the power battery and also reduce vehicle energy consumption, thereby optimizing vehicle layout and saving costs.

[0008] This disclosure further proposes a vehicle.

[0009] According to the thermal management system disclosed herein, the system includes: an engine having an engine cooling water passage and an exhaust port; a power battery disposed at a distance from the engine; and a muffler connected to the exhaust port, the muffler having a muffler cooling water passage connected in parallel with the engine cooling water passage.

[0010] According to the thermal management system disclosed herein, by setting an engine cooling water circuit in the engine, separating the power battery from the engine, and setting a muffler cooling water circuit in the muffler, the coolant can flow through the engine cooling water circuit or the muffler cooling water circuit. Moreover, the muffler cooling water circuit is connected in parallel with the engine cooling water circuit, thereby keeping the heat damage from the muffler away from the power battery, reducing the vehicle's energy consumption, and thus improving the vehicle's performance.

[0011] In some examples of this disclosure, the distance from the muffler to the engine is less than the distance from the muffler to the power battery.

[0012] In some examples of this disclosure, the engine has a first side and a second side opposite to each other, the power battery is located on the first side, and the muffler is located on the second side.

[0013] In some examples of this disclosure, the muffler is mounted on the surface of the engine.

[0014] In some examples of this disclosure, the muffler includes: a housing; and a heat exchanger disposed in the housing, wherein the heat exchanger has cooling water passages formed therein.

[0015] In some examples of this disclosure, the heat exchanger is a heat exchange pipeline disposed within the housing, the heat exchange pipeline having an inlet and an outlet extending out of the housing, the inlet being connected to one end of the engine cooling water passage and the outlet being connected to the other end of the engine cooling water passage.

[0016] In some examples of this disclosure, the heat exchanger is a heat exchange plate, which is attached to the outer side of the housing; or the housing has a through hole, and the heat exchange plate is disposed in the through hole.

[0017] In some examples of this disclosure, the housing includes: a first housing; and a second housing, the first housing and the second housing being disposed opposite each other in the thickness direction of the housing, the first housing and the second housing being connected, the heat exchanger being mounted on the first housing, and the second housing being mounted on the engine.

[0018] In some examples of this disclosure, the thermal management system further includes: a first radiator connected to the engine cooling water passage and the muffler cooling water passage respectively; a first water pump having an inlet and an outlet, the outlet being connected to the engine cooling water passage and the muffler cooling water passage respectively; and a thermostat connected to the engine cooling water passage, the muffler cooling water passage, the first radiator, and the inlet respectively, so that the medium in the engine cooling water passage and the muffler cooling water passage selectively flows through and around the first radiator into the inlet.

[0019] In some examples of this disclosure, the thermal management system further includes: an EGR system, the engine having an intake port, the EGR system being connected between the intake port and the exhaust port, the EGR system having an EGR cooling water passage, one end of the EGR cooling water passage being connected to the engine cooling water passage, and the other end of the EGR cooling water passage being connected to the first radiator and the thermostat respectively.

[0020] In some examples of this disclosure, the thermal management system further includes a temperature sensor for detecting the temperature of the medium flowing out of the muffler cooling water path.

[0021] In some examples of this disclosure, the thermal management system further includes a heater core, one end of which is connected to the water inlet and the other end of which is connected to the engine cooling water circuit.

[0022] In some examples of this disclosure, the thermal management system further includes: an electric heater; and a controller electrically connected to the electric heater, the controller being configured to: control the electric heater to operate when a heating command is received and the engine is not operating; control the electric heater to operate when a heating command is received, the engine is operating, and the medium temperature is not higher than a preset value, so that the heater core and the electric heater operate together; and control the electric heater to deactivate when a heating command is received, the engine is operating, and the medium temperature is higher than the preset value, so that the heater core operates.

[0023] In some examples of this disclosure, the thermal management system further includes: a motor controller; a second radiator; and a second water pump, wherein the motor controller, the second radiator, and the second water pump are connected in series and form a loop.

[0024] In some examples of this disclosure, the thermal management system further includes a DC-DC converter connected between the motor controller and the second heat sink.

[0025] In some examples of this disclosure, the thermal management system further includes: a transmission, which is drive-connected to the engine, the transmission having a transmission cooling water passage connected between the DC-DC converter and the second radiator.

[0026] In some examples of this disclosure, the thermal management system further includes: a compressor; a condenser connected to one end of the compressor; and an evaporator connected between the condenser and the other end of the compressor; wherein the power battery is provided with a battery cooling water circuit, the battery cooling water circuit being connected between the condenser and the compressor, and the battery cooling water circuit being connected in parallel with the evaporator.

[0027] In some examples of this disclosure, the thermal management system further includes: a control valve connected between the condenser and the evaporator, and one end of the battery cooling water circuit connected between the condenser and the control valve.

[0028] In some examples of this disclosure, the thermal management system further includes a coaxial tube comprising a first tube body and a second tube body, the first tube body being sleeved on the second tube body and arranged coaxially, one of the first tube body and the second tube body being connected between the condenser and the battery cooling water circuit, and the other of the first tube body and the second tube body being connected between the battery cooling water circuit and the compressor.

[0029] The vehicle according to this disclosure includes: the thermal management system described above.

[0030] Compared with the prior art, the vehicle provided in this disclosure adopts an engine cooling water passage in the engine and a muffler cooling water passage in the muffler. This allows the coolant to flow through the engine cooling water passage or the muffler cooling water passage. Moreover, the muffler is closer to the engine than the power battery, which can keep the heat damage of the muffler away from the power battery. The heat of the muffler can also be used to help warm up the engine, thereby improving the performance of the vehicle.

[0031] Additional aspects and advantages of this disclosure will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this disclosure. Attached Figure Description

[0032] The above and / or additional aspects and advantages of this disclosure will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0033] Figure 1 is a schematic diagram of the small circulation mode of the thermal management system;

[0034] Figure 2 is a schematic diagram of the large circulation mode of the thermal management system;

[0035] Figure 3 is a schematic diagram of the power battery cooling principle;

[0036] Figure 4 is a schematic diagram of the silencer structure;

[0037] Figure 5 is a cross-sectional view of the muffler;

[0038] Figure 6 is a schematic block diagram of a vehicle according to an embodiment of the present disclosure.

[0039] Reference numerals: 1000, Vehicle; 100, Thermal Management System; 10, Engine; 20, Muffler; 21, Housing; 22, Heat Exchanger; 23, Inlet; 24, Outlet; 25, First Housing; 26, Second Housing; 30, First Water Pump; 31, Thermostat; 32, EGR System; 33, Temperature Sensor; 34, Heater Core; 35, Motor Controller; 36, Second Water Pump; 37, DC-DC Converter; 38, Transmission; 39, First Radiator; 40, Second Radiator; 41, Compressor; 42, Condenser; 43, Evaporator; 44, Control Valve; 45, Coaxial Tube; 46, Pressure Sensor; 47, Water Tank; 48, Throttling Element; 50, Power Battery. Detailed Implementation

[0040] The embodiments of this disclosure are described in detail below, and the embodiments described with reference to the accompanying drawings are exemplary.

[0041] A thermal management system 100 according to an embodiment of the present disclosure is described below with reference to Figures 1-5. This thermal management system 100 is applied in a vehicle, such as a hybrid vehicle.

[0042] As shown in Figures 1-5, the thermal management system 100 of this disclosure includes an engine 10, a power battery 50, and a muffler 20. An engine cooling water passage is formed inside the engine 10, and the engine 10 has an exhaust port. The power battery 50 is spaced apart from the engine 10, and the muffler 20 is connected to the exhaust port. The distance from the muffler 20 to the engine 10 is less than the distance from the muffler 20 to the power battery 50. The muffler 20 has a muffler cooling water passage, which is connected in parallel with the engine cooling water passage.

[0043] It is understandable that the engine 10, the power battery 50 and the muffler 20 constitute the main structure of the thermal management system 100. The engine 10 is equipped with an engine cooling water circuit. The coolant can cool and dissipate heat inside the engine 10 by passing through the engine cooling water circuit, so that the engine 10 can work at a balanced temperature, thereby improving the performance of the engine 10 and extending its service life.

[0044] The power battery 50 and the engine 10 are arranged separately. This arrangement ensures that the power battery 50 and the engine 10 do not affect each other, and the heat generated by the engine 10 can be kept away from the power battery 50, thereby ensuring the performance of the power battery 50 and extending its service life.

[0045] In addition, a muffler 20 is connected to the exhaust port of the engine 10. This arrangement allows the muffler 20 to suppress the noise generated when the engine 10 exhausts, thereby reducing noise pollution during vehicle operation and improving the driving experience for passengers. The muffler 20 is closer to the engine 10 than the power battery 50. This arrangement allows the heat generated by the engine 10 to dissipate through the muffler 20. Furthermore, the muffler 20 and its corresponding piping do not need to extend rearward through the area surrounding the power battery 50, thus preventing the power battery 50 from being affected by heat and improving its performance.

[0046] In addition, a muffler cooling water circuit is provided inside the muffler 20. When the coolant flows through the muffler cooling water circuit, it can cool and dissipate heat from the muffler 20. Moreover, the engine cooling water circuit and the muffler cooling water circuit are connected in parallel. This allows the heat from the muffler 20 to warm up the engine 10 when the vehicle switches from pure electric mode to hybrid mode, thereby reducing the heating time of the water temperature in the engine 10. It also allows the heat from the engine 10 and the muffler 20 to flow into the passenger compartment, thereby using the heat from the engine 10 to warm up the passenger compartment, which can save vehicle energy consumption.

[0047] Therefore, by setting up an engine cooling water passage in the engine 10 and a muffler cooling water passage in the muffler 20, coolant can flow through the engine cooling water passage or the muffler cooling water passage. Moreover, the muffler 20 is closer to the engine 10 than the power battery 50, so the heat damage of the muffler 20 can be kept away from the power battery 50. The heat of the muffler 20 can also be used to help warm up the engine 10, thereby improving the performance of the vehicle.

[0048] As shown in Figures 1 and 2, the engine 10 has a first side and a second side facing each other. The power battery 50 is located on the first side, and the muffler 20 is located on the second side. That is, the engine 10 is installed in the vehicle with the first and second sides facing each other. This arrangement divides the surrounding space of the engine 10 into two smaller spaces. The power battery 50 is located on one side of the engine 10, and the muffler 20 is located on the other side. This arrangement keeps the muffler 20 away from the power battery 50, thus preventing heat damage from the muffler 20 from affecting the power battery 50. It also allows heat from the muffler 20 to flow into the passenger compartment, thereby ensuring the performance of the power battery 50 and reducing vehicle energy consumption. For example, the power battery 50 can be located at the rear of the engine 10, and the muffler 20 at the front of the engine 10.

[0049] Specifically, as shown in Figures 1 and 2, the muffler 20 is mounted on the surface of the engine 10. This arrangement facilitates the connection of the muffler 20 to the exhaust port, allowing heat from the engine 10 to enter the muffler 20 and be dissipated through the muffler's cooling water circuit. It also facilitates the installation, removal, maintenance, and repair of the muffler 20, thereby improving vehicle performance and reducing energy consumption. For example, the muffler 20 can be mounted on the front surface of the engine 10.

[0050] Furthermore, as shown in Figures 4 and 5, the muffler 20 includes a housing 21 and a heat exchanger 22. The heat exchanger 22 is disposed within the housing 21, and a cooling water passage is formed within the heat exchanger 22. It can be understood that the housing 21 and the heat exchanger 22 constitute the main structure of the muffler 20. The heat exchanger 22 is located within the housing 21, thus protecting the heat exchanger 22 and extending its service life. The cooling water passage within the heat exchanger 22 allows the coolant to flow through, thereby cooling and dissipating heat from the muffler 20, thus ensuring its performance.

[0051] Optionally, as shown in Figures 4 and 5, the heat exchanger 22 is a heat exchange pipeline housed within the casing 21. The heat exchange pipeline has an inlet 23 and an outlet 24, both extending out of the casing 21. The inlet 23 is connected to one end of the engine cooling water passage, and the outlet 24 is connected to the other end of the engine cooling water passage. In other words, the heat exchanger 22 is constructed as a heat exchange pipeline located within the casing 21, thus protecting the heat exchange pipeline and extending its service life. Furthermore, the coolant flowing through the heat exchange pipeline efficiently dissipates heat from and cools the muffler 20. The two ends of the heat exchange pipeline are inlet 23 and outlet 24, respectively. Both inlet 23 and outlet 24 protrude from the shell 21, which facilitates the coolant to enter the muffler cooling water circuit from inlet 23 and then flow out through outlet 24. Inlet 23 and outlet 24 are respectively connected to the two ends of the engine cooling water circuit, thereby connecting the engine cooling water circuit and the muffler cooling water circuit, which facilitates the coolant to dissipate heat and cool down the engine 10 and muffler 20 in the engine cooling water circuit and the muffler cooling water circuit.

[0052] Alternatively, the heat exchanger 22 can be a heat exchange plate attached to the outer surface of the housing 21; or, the housing 21 may have a through hole, and the heat exchange plate may be disposed within the through hole. It is understood that the heat exchanger 22 is constructed as a heat exchange plate, located on the outer surface of the housing 21, or disposed within a through hole in the housing 21, thereby allowing the heat exchange plate to dissipate heat from within the housing 21, thus achieving cooling and heat dissipation for the silencer 20.

[0053] Furthermore, as shown in Figures 4 and 5, the housing 21 includes a first housing 25 and a second housing 26, which are arranged opposite to each other in the thickness direction of the housing 21. The first housing 25 and the second housing 26 are connected. The heat exchanger 22 is installed in the first housing 25, and the second housing 26 is installed in the engine 10. That is, the first housing 25 and the second housing 26 constitute the main body of the housing 21. The first housing 25 and the second housing 26 are arranged opposite to each other in the thickness direction, thereby forming an installation space between the first housing 25 and the second housing 26. This facilitates the arrangement of the heat exchanger 22 within the first housing 25 and the second housing 26. The heat exchanger 22 is located within the first housing 25, and the second housing 26 is connected to the engine 10, thereby allowing the muffler 20 to be connected to the engine 10. This facilitates the flow of coolant through the engine cooling water passage and the muffler cooling water passage, and also facilitates the assembly of the muffler 20.

[0054] In addition, as shown in Figures 1 and 2, the thermal management system 100 also includes a first radiator 39, a first water pump 30, and a thermostat 31. The first radiator 39 is connected to the engine cooling water circuit and the muffler cooling water circuit respectively. The first water pump 30 has an inlet and an outlet. The outlet is connected to the engine cooling water circuit and the muffler cooling water circuit respectively. The thermostat 31 is connected to the engine cooling water circuit, the muffler cooling water circuit, the first radiator 39, and the inlet respectively, so that the medium in the engine cooling water circuit and the muffler cooling water circuit selectively flows through and bypasses the first radiator 39 into the inlet.

[0055] Understandably, the first radiator 39 is connected to both the engine cooling water circuit and the muffler cooling water circuit, allowing it to cool and dissipate the coolant in these circuits. The first water pump 30 has an inlet and an outlet, with the outlet connected to both the engine cooling water circuit and the muffler cooling water circuit. This allows the coolant to enter the first radiator 39 through the inlet, cool, and then flow back into the engine and muffler cooling water circuits through the outlet, thus cooling and dissipating the coolant in the engine 10 and muffler 20. The thermostat 31 is connected to the engine cooling water circuit, the muffler cooling water circuit, the first radiator 39, and the inlet, allowing it to control the temperature of the coolant before it enters these circuits. It can also selectively direct the coolant from the engine and muffler cooling water circuits into the first water pump 30, facilitating coolant circulation. Furthermore, the thermostat 31 controls whether the first radiator 39 participates in the cooling cycle, thereby dividing the circulation mode into a small cycle and a large cycle, which will be described in detail below. For example, the first radiator 39 is connected to the water tank 47, so that the water tank 47 stores the coolant, and the first radiator 39 then cools the coolant.

[0056] In addition, as shown in Figures 1 and 2, the thermal management system 100 also includes an EGR system 32. The engine 10 has an air intake port, and the EGR system 32 is connected between the air intake port and the exhaust port. The EGR system 32 is provided with an EGR cooling water passage. One end of the EGR cooling water passage is connected to the engine cooling water passage, and the other end of the EGR cooling water passage is connected to the first radiator 39 and the thermostat 31, respectively.

[0057] In other words, the engine 10 is equipped with an intake port and an exhaust port. The exhaust port is connected to the muffler 20. The EGR system 32 is located between the intake port and the exhaust port, so that the EGR system 32 can realize the exhaust gas recirculation function of the engine 10. The EGR system 32 is equipped with an EGR cooling water circuit, so that the coolant can pass through the EGR cooling water circuit to dissipate heat and cool down the EGR system 32. The EGR cooling water circuit is located between the engine cooling water circuit and the first radiator 39, so that one end of the EGR cooling water circuit is connected to the engine cooling water circuit, and the other end is connected to the first radiator 39 and the thermostat 31. So that the first radiator 39 and the thermostat 31 can control the temperature of the coolant before it flows into the EGR cooling water circuit and the engine cooling water circuit, thereby facilitating the coolant to dissipate heat and cool down the EGR system 32.

[0058] Additionally, as shown in Figures 1 and 2, the thermal management system 100 also includes a temperature sensor 33, which is used to detect the temperature of the medium flowing out of the muffler cooling water path. It is understood that the temperature sensor 33 is positioned next to the muffler cooling water path; this arrangement allows the temperature sensor 33 to detect the coolant at the end of the muffler cooling water path, thereby facilitating the control of the muffler 20's temperature.

[0059] Furthermore, as shown in Figures 1 and 2, the thermal management system 100 also includes a heater core 34. One end of the heater core 34 is connected to the water inlet, and the other end is connected to the engine cooling water circuit. In other words, the heater core 34 is connected between the first water pump 30 and the engine cooling water circuit. This configuration allows the water inlet to be connected to the heater core 34, enabling the heat dissipated from the engine cooling water circuit to be displaced by the heater core 34, allowing heated air to enter the cab. This utilizes the heat from the engine 10 to warm the cab, improving the driver's comfort.

[0060] In addition, the thermal management system 100 also includes an electric heater and a controller. The controller is electrically connected to the electric heater and is configured to: control the electric heater to operate when a heating command is received and the engine 10 is not operating; control the electric heater to operate when a heating command is received, the engine 10 is operating, and the medium temperature is not higher than a preset value, so that the heater core 34 and the electric heater operate together; and control the electric heater to deactivate when a heating command is received, the engine 10 is operating, and the medium temperature is higher than the preset value, thereby enabling the heater core 34 to operate. The electric heater can be a PTC heater.

[0061] Understandably, the controller is connected to the electric heater. This configuration allows the controller to control the heating function of the electric heater, ensuring that the heat generated by the heater enters the driver's cabin and maintains a suitable temperature. The controller can allocate heat from the electric heater based on actual conditions. When the engine 10 is not running, the heat generated by the electric heater enters the driver's cabin; when the engine 10 is running, the heat generated by the heater core 34 and the electric heater enters the driver's cabin; when the temperature is higher than a preset value, only the heat generated by the heater core 34 enters the driver's cabin. This allows the vehicle to select the source of heat in the driver's cabin based on actual conditions, thus enabling vehicle intelligence.

[0062] Furthermore, as shown in Figures 1 and 2, the thermal management system 100 also includes a motor controller 35, a second radiator 40, and a second water pump 36. The motor controller 35, the second radiator 40, and the second water pump 36 are connected in series and form a circuit. That is, the motor controller 35, the second radiator 40, and the second water pump 36 are connected in series to form a circuit, allowing the second water pump 36 to drive the coolant. The coolant, after passing through the second radiator 40, dissipates heat and cools the motor controller 35, thus ensuring the performance of the motor controller 35. For example, the second radiator 40 is connected to a water tank 47, allowing the water tank 47 to store coolant, and the second radiator 40 to cool the coolant.

[0063] Additionally, as shown in Figures 1 and 2, the thermal management system 100 also includes a DC-DC converter 37, which is connected between the motor controller 35 and the second heat sink 40. It is understood that the DC-DC converter 37, located between the motor controller 35 and the second heat sink 40, allows the DC-DC converter 37 to convert DC power to different voltages, thereby facilitating heat dissipation and cooling of the motor controller 35 and the DC-DC converter 37.

[0064] Furthermore, as shown in Figures 1 and 2, the thermal management system 100 also includes a transmission 38, which is connected to the engine 10. The transmission 38 is equipped with a transmission cooling water circuit, which is connected between the DC-DC converter 37 and the second radiator 40. It is understood that the transmission 38 is connected to the engine 10, allowing the transmission 38 to control and adjust the vehicle speed. The transmission cooling water circuit within the transmission 38 allows the coolant to dissipate heat and cool the transmission 38 after passing through it. The transmission cooling water circuit is located between the DC-DC converter 37 and the second radiator 40, allowing the coolant to pass through the second radiator 40 before entering the transmission cooling water circuit, thus facilitating heat dissipation and cooling of the transmission 38. The transmission 38 may be equipped with a heat exchange plate, which is also equipped with the transmission cooling water circuit.

[0065] Additionally, as shown in Figure 3, the thermal management system 100 also includes a compressor 41, a condenser 42, and an evaporator 43. The condenser 42 is connected to one end of the compressor 41, and the evaporator 43 is connected between the other ends of the condenser 42 and the compressor 41. The power battery 50 is equipped with a battery cooling water circuit, which is connected between the condenser 42 and the compressor 41, and is connected in parallel with the evaporator 43. In other words, the compressor 41, condenser 42, and evaporator 43 are interconnected, allowing the compressor 41 to compress low-temperature, low-pressure cooling gas into high-temperature, high-pressure cooling gas. The condenser 42 cools the cooling gas into coolant, and the evaporator 43 evaporates the coolant back into cooling gas, thus achieving a cooling cycle. The battery cooling water circuit within the power battery 50 allows the coolant to flow through it, dissipating heat and cooling the power battery 50. Furthermore, the battery cooling water circuit is located between the condenser 42 and the compressor 41, and is connected in parallel with the evaporator 43, facilitating the cooling of the power battery 50 by the coolant. Compressor 41 can be an electric compressor, thus eliminating the need for an engine and allowing for electric drive. For example, a pressure sensor 46 is installed on one side of the condenser 42, enabling the sensor to detect the pressure of the cooling medium. Based on the actual situation, the condenser 42 cools the cooling gas into coolant.

[0066] Furthermore, as shown in Figure 3, the thermal management system 100 also includes a control valve 44, which is connected between the condenser 42 and the evaporator 43. One end of the battery cooling water circuit is connected between the condenser 42 and the control valve 44. It can be understood that the control valve 44, located between the condenser 42 and the evaporator 43, controls the on / off state between the condenser 42 and the evaporator 43. The battery cooling water circuit is connected to the condenser 42 and the control valve 44, allowing the control valve 44 to control the on / off state between the condenser 42 and the battery cooling water circuit. For example, the control valve 44 may be a solenoid valve connected between the condenser 42 and the evaporator 43, allowing the solenoid valve to control the on / off state between the condenser 42 and the evaporator 43. A throttling element 48, which is a thermostatic expansion valve, is provided between the condenser 42 and the evaporator 43, allowing the throttling element 48 to adjust the volume of coolant between the condenser 42 and the evaporator 43, thereby making the coolant flow more stable.

[0067] In addition, as shown in Figure 3, the thermal management system 100 also includes a coaxial tube 45, which comprises a first tube body and a second tube body. The first tube body is fitted onto the second tube body and arranged coaxially. One of the first and second tube bodies is connected between the condenser 42 and the battery cooling water circuit, while the other of the first and second tube bodies is connected between the battery cooling water circuit and the compressor 41. That is, the first and second tube bodies are connected, with the first tube body located between the condenser 42 and the battery cooling water circuit, and the second tube body located between the battery cooling water circuit and the compressor 41. This allows for heat exchange and cooling between the first and second tube bodies, facilitating temperature control by the coaxial tube 45. For example, a throttling element 48, which is an electronic expansion valve, is provided between the coaxial tube 45 and the battery cooling water circuit. This allows the throttling element 48 to precisely regulate the flow rate of the coolant between the coaxial tube 45 and the battery cooling water circuit, thereby making the coolant flow more stable.

[0068] Specifically, as shown in Figures 1-3, the thermal management system 100 is divided into a small circulation mode and a large circulation mode under the hybrid power operation of the vehicle.

[0069] Small circulation mode: At this time, the coolant temperature is low, and the muffler cooling water circuit is connected in parallel with the engine cooling water circuit. The muffler cooling water circuit passes through outlet 24, temperature sensor 33, thermostat 31, first water pump 30 and inlet 23 in sequence; the engine cooling water circuit passes through EGR system 32, thermostat 31 and first water pump 30 in sequence and then flows back to the engine cooling water circuit; the heat in the cab passes through heater core 34, first water pump 30, engine 10, EGR system 32, thermostat 31, first water pump 30, engine 10 and heater core 34 in sequence; the battery cooling water circuit passes through second radiator 40, second water pump 36, motor controller 35, DC-DC converter 37, transmission 38 and second radiator 40 in sequence.

[0070] Large circulation mode: At this time, the coolant temperature is high, the thermostat 31 is fully open, the muffler cooling water circuit is connected in parallel with the engine cooling water circuit, the muffler cooling water circuit passes through outlet 24, temperature sensor 33, first radiator 39, thermostat 31, first water pump 30 and inlet 23 in sequence; the engine cooling water circuit passes through EGR system 32, first radiator 39, thermostat 31 and first water pump 30 in sequence and then flows back to the engine cooling water circuit; the heat in the cab passes through heater core 34, first water pump 30, engine 10, EGR system 32, first radiator 39, thermostat 31, first water pump 30, engine 10 and heater core 34 in sequence; the battery cooling water circuit passes through second radiator 40, second water pump 36, motor controller 35, DC-DC converter 37, transmission 38 and second radiator 40 in sequence.

[0071] The vehicle 1000 according to this disclosure includes the thermal management system 100 of the above embodiments, as shown in FIG6. By providing an engine cooling water passage in the engine 10 and a muffler cooling water passage in the muffler 20, coolant can flow through the engine cooling water passage or the muffler cooling water passage. Moreover, the muffler 20 is closer to the engine 10 than the power battery 50, thereby keeping the heat damage from the muffler 20 away from the power battery 50. The heat from the muffler 20 can also help warm up the engine 10, thereby improving the performance of the vehicle 1000.

[0072] In the description of this disclosure, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0073] In the description of this disclosure, "first feature" and "second feature" may include one or more of the features. In the description of this disclosure, "a plurality of" means two or more. In the description of this disclosure, "above" or "below" the second feature may include direct contact between the first and second features, or contact between the first and second features not in direct contact but through another feature between them. In the description of this disclosure, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature.

[0074] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0075] Although embodiments of this disclosure have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this disclosure, the scope of which is defined by the claims and their equivalents.

Claims

1. A thermal management system (100), characterized in that, include: An engine (10) having an engine cooling water passage formed therein, and an exhaust port; A power battery (50) is disposed at a distance from the engine (10); and A muffler (20) is connected to the exhaust port. The muffler (20) forms a muffler cooling water passage, which is connected in parallel with the engine cooling water passage.

2. The thermal management system (100) according to claim 1, characterized in that, The distance from the muffler (20) to the engine (10) is less than the distance from the muffler (20) to the power battery (50).

3. The thermal management system (100) according to claim 1 or 2, characterized in that, The engine (10) has a first side and a second side opposite to each other, the power battery (50) is located on the first side and the muffler (20) is located on the second side.

4. The thermal management system (100) according to any one of claims 1-3, characterized in that, The muffler (20) is mounted on the surface of the engine (10).

5. The thermal management system (100) according to claim 1, characterized in that, The silencer (20) includes: Shell (21); and Heat exchanger (22), which is disposed in the shell (21), and the silencer cooling water passage is formed inside the heat exchanger (22).

6. The thermal management system (100) according to claim 5, characterized in that, The heat exchanger (22) is a heat exchange pipeline, which is disposed inside the shell (21). The heat exchange pipeline has an inlet (23) and an outlet (24). The inlet (23) and the outlet (24) extend out of the shell (21). The inlet (23) is connected to one end of the engine cooling water passage and the outlet (24) is connected to the other end of the engine cooling water passage.

7. The thermal management system (100) according to claim 5, characterized in that, The heat exchanger (22) is a heat exchange plate, which is attached to the outer side of the shell (21); or The housing (21) has a through hole, and the heat exchange plate is disposed in the through hole.

8. The thermal management system (100) according to any one of claims 5-7, characterized in that, The housing (21) includes: First shell (25); and The second housing (26) is provided opposite to the first housing (25) and the second housing (26) in the thickness direction of the housing (21). The first housing (25) and the second housing (26) are connected. The heat exchanger (22) is installed on the first housing (25) and the second housing (26) is installed on the engine (10).

9. The thermal management system (100) according to any one of claims 1-8, characterized in that, Also includes: The first radiator (39) is connected to the engine cooling water circuit and the muffler cooling water circuit respectively; The first water pump (30) has an inlet and an outlet, the outlet being connected to the engine cooling water circuit and the muffler cooling water circuit respectively; as well as The thermostat (31) is connected to the engine cooling water circuit, the muffler cooling water circuit, the first radiator (39) and the water inlet, respectively, so that the medium in the engine cooling water circuit and the muffler cooling water circuit selectively flows through and around the first radiator (39) into the water inlet.

10. The thermal management system (100) according to claim 9, characterized in that, Also includes: The engine (10) has an air intake port, and the EGR system (32) is connected between the air intake port and the exhaust port. The EGR system (32) is provided with an EGR cooling water passage. One end of the EGR cooling water passage is connected to the engine cooling water passage, and the other end of the EGR cooling water passage is connected to the first radiator (39) and the thermostat (31) respectively.

11. The thermal management system (100) according to claim 9 or 10, characterized in that, Also includes: Temperature sensor (33) is used to detect the temperature of the medium flowing out of the muffler cooling water path.

12. The thermal management system (100) according to any one of claims 9-11, characterized in that, Also includes: The heater core (34) has one end connected to the water inlet and the other end connected to the engine cooling water circuit.

13. The thermal management system (100) according to claim 12, characterized in that, Also includes: Electric heater; and A controller, electrically connected to the electric heater, is configured to: When a heating command is received and the engine (10) is not operating, the electric heater is controlled to operate; When a heating command is received, the engine (10) is working and the medium temperature is not higher than a preset value, the electric heater is controlled to work so that the warm air core (34) and the electric heater work together; When a heating command is received, the engine (10) is working and the medium temperature is higher than a preset value, the electric heater is controlled to stop working so that the warm air core (34) can work.

14. The thermal management system (100) according to any one of claims 1-13, characterized in that, Also includes: Motor controller (35); Second radiator (40); as well as The second water pump (36), the motor controller (35), the second radiator (40) and the second water pump (36) are connected in series and form a circuit.

15. The thermal management system (100) according to claim 14, characterized in that, Also includes: A DC-DC converter (37) is connected between the motor controller (35) and the second heat sink (40).

16. The thermal management system (100) according to claim 15, characterized in that, Also includes: The transmission (38) is connected to the engine (10) in a transmission. The transmission (38) is provided with a transmission cooling water circuit, which is connected between the DC-DC converter (37) and the second radiator (40).

17. The thermal management system (100) according to any one of claims 1-16, characterized in that, Also includes: Compressor (41); A condenser (42) is connected to one end of the compressor (41); as well as An evaporator (43) is connected between the condenser (42) and the other end of the compressor (41); The power battery (50) is provided with a battery cooling water circuit, which is connected between the condenser (42) and the compressor (41), and is connected in parallel with the evaporator (43).

18. The thermal management system (100) according to claim 17, characterized in that, Also includes: A control valve (44) is connected between the condenser (42) and the evaporator (43), and one end of the battery cooling water circuit is connected between the condenser (42) and the control valve (44).

19. The thermal management system (100) according to claim 17 or 18, characterized in that, Also includes: The coaxial tube (45) includes a first tube body and a second tube body. The first tube body is sleeved on the second tube body and arranged coaxially. One of the first tube body and the second tube body is connected between the condenser (42) and the battery cooling water circuit. The other of the first tube body and the second tube body is connected between the battery cooling water circuit and the compressor (41).

20. A vehicle (1000), characterized in that, include: The thermal management system (100) according to any one of claims 1-19.

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