A hybrid light truck thermal management system with manual and automatic control switching function

Abstract

The present application belongs to the technical field of automobile thermal management, and relates to a hybrid light truck thermal management system with manual and automatic control switching functions, comprising a thermal management controller module, a cooling assembly, a temperature controller, a WPTC water heater, an air conditioner, a battery cooler, a plate heat exchanger, a battery cooling assembly, a three-way valve and a battery heat exchange plate. The system has manual and automatic control switching functions. When the thermal management controller module switches the three-way valve to enable the second radiator to cool the battery pack, the second fan simultaneously blows air on the second radiator and the plate heat exchanger, so that the battery pack can also take away the heat emitted outside the plate heat exchanger when cooling, and the cooling water can be introduced into the hybrid box when the plate heat exchanger is cooling. When driving by electric power, the hybrid box is cooled synchronously, the use amount of the cooling fan is reduced, the hybrid box and the battery pack are cooled at the same time, and the cost required for cooling the hybrid box is reduced by sharing one cooling fan.

Description

Technical Field

[0001] This invention belongs to the field of automotive thermal management technology, specifically relating to a hybrid light truck thermal management system with manual and automatic control switching functions. Background Technology

[0002] Currently, most mainstream hybrid vehicles employ independent temperature control systems for their battery thermal management systems. When using a thermal management controller to control the operation of a hybrid light truck, the controller detects and acquires the temperature of various vehicle components. Manual and automatic control can be switched via the control panel, allowing for convenient cooling or heating based on the actual temperature of the hybrid light truck's battery pack, ensuring safe operation.

[0003] CN111342168A discloses a hybrid vehicle battery thermal management system and a hybrid vehicle. By controlling the switching and coordination of the battery pack's natural cooling circuit, forced cooling circuit, direct heating circuit and indirect heating circuit, the system can effectively, quickly and energy-efficiently solve the problems of battery pack overheating and overcooling, thereby ensuring that the battery pack can work normally under any operating conditions and enabling the hybrid vehicle to achieve environmental adaptability comparable to traditional fuel vehicles.

[0004] This technology selectively achieves the cooling requirements of the battery pack by using a natural cooling circuit and a forced cooling circuit, while taking into account the need for energy saving and consumption reduction. However, the battery pack uses natural heat dissipation or liquid cooling, which means that additional heat dissipation components are needed to cool the hybrid box when the hybrid vehicle is running. Adding extra heat dissipation components in the small installation area of ​​the vehicle chassis will increase the operating cost. Summary of the Invention

[0005] The purpose of this invention is to provide a hybrid light truck thermal management system with manual and automatic control switching functions to solve the problems existing in the background art.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0007] A hybrid light truck thermal management system with manual and automatic control switching function includes a thermal management controller module, a cooling component, a thermostat, a WPTC water heater, an air conditioner, a battery cooler, a plate heat exchanger, a battery cooling component, a three-way valve, and a battery heat exchange plate.

[0008] The thermal management controller module is connected to the cooling components, the thermostat and the temperature sensor respectively. The thermostat is connected to the air conditioning wire. At the same time, the thermostat is connected to the WPTC water heater and the plate heat exchanger via bus communication.

[0009] The cooling assembly is connected to the engine's coolant tank, the air conditioner's refrigerant outlet is connected to the battery cooler's inlet, the battery cooler's outlet is connected to the battery cooling assembly, the battery cooling assembly is connected to the first inlet of the three-way valve, the three-way valve's outlet is connected to the battery heat exchange plate, the WPTC water heater is connected to the second inlet of the three-way valve and the plate heat exchanger respectively, and the battery cooling assembly is connected to the plate heat exchanger.

[0010] The battery cooling component is installed on one side of the battery pack, and the cooling water outlet of the plate heat exchanger is connected to the cooling channel of the hybrid box.

[0011] Furthermore, the cooling assembly includes a first radiator and a first fan, the circulating water pipes of the first radiator are connected to the engine's water tank pipes, and the first fan is mounted on the surface of the first radiator.

[0012] Furthermore, the battery cooling assembly includes a second radiator and a second fan, with one side of the second radiator facing the other side of the second fan, and the side of the second fan away from the second radiator facing the plate heat exchanger.

[0013] Furthermore, the second fan comprises at least two fans.

[0014] Furthermore, the thermal management controller module switches the three-way valve so that when the second radiator cools the battery pack, the second fan blows air onto both the second radiator and the plate heat exchanger. While the plate heat exchanger is cooling the battery pack, cooling water is introduced into the hybrid tank.

[0015] Furthermore, the battery heat exchange plate is disposed inside the battery pack, and a circulating water channel is provided inside the battery heat exchange plate.

[0016] Furthermore, by operating the thermostat, the refrigerant of the air conditioner flows into the pipeline of the battery cooler, so that the battery cooler cools the second radiator. The thermal management controller switches the three-way valve to the cooling water supply state, so that the second radiator and the battery heat exchange plate are connected, while the connection between the WPTC water heater and the battery heat exchange plate is disconnected, so as to cool down the battery pack.

[0017] Furthermore, the thermal management controller switches the three-way valve to the state of delivering heated water, connecting the WPTC water heater and the battery heat exchange plate, while disconnecting the connection between the second radiator and the battery heat exchange plate, thus protecting the battery pack from overheating.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] This technical solution features a hybrid light truck thermal management controller with manual and automatic control switching functions. When the thermal management controller module switches the three-way valve to allow the second radiator to cool the battery pack, the second fan simultaneously blows air onto both the second radiator and the plate heat exchanger. This allows the battery pack to carry away heat dissipated from the outside of the plate heat exchanger while it is being cooled. Meanwhile, while the plate heat exchanger is cooling, coolant can be introduced into the hybrid box. Thus, when the hybrid light truck is driven by electricity, the hybrid box can be cooled synchronously, reducing the amount of cooling fan required. This ensures that the hybrid box and battery pack are cooled simultaneously. By sharing a single cooling fan component, the cost of cooling the hybrid box is reduced. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the control flow structure of the present invention.

[0021] Figure 2 This is a schematic diagram of the temperature control principle of the battery pack and hybrid box of the present invention.

[0022] Figure 3 This is a schematic diagram of the engine cooling principle structure of the present invention.

[0023] The markings in the diagram are as follows: 1. Thermal management controller module; 2. Cooling assembly; 201. First radiator; 202. First fan; 3. Engine; 4. Thermostat; 5. Air conditioner; 6. Battery cooler; 7. Battery cooling assembly; 701. Second radiator; 702. Second fan; 8. Battery pack; 801. Battery heat exchange plate; 9. Plate heat exchanger; 10. Hybrid box; 11. WPTC water heater; 12. Three-way valve; 13. Temperature sensor. Detailed Implementation

[0024] The technical solution of the present invention will be described in detail below with reference to the accompanying drawings. The following embodiments are merely exemplary and can only be used to explain and illustrate the technical solution of the present invention, and should not be construed as limiting the technical solution of the present invention.

[0025] Please see Figures 1 to 3 This invention provides a technical solution: a hybrid light truck thermal management controller with manual and automatic control switching function, including a thermal management controller module 1, a cooling component 2, a battery pack 8, and a hybrid box 10. The thermal management controller module 1 is connected to the cooling component 2, a thermostat 4, and a temperature sensor 13, and the thermal management controller module 1 and the thermostat 4 have a bidirectional communication connection. The cooling component 2 is connected to the coolant tank of the engine 3. The thermostat 4 is connected to the air conditioner 5 by wires. The refrigerant outlet of the air conditioner 5 is connected to the inlet end of the battery cooler 6, and the outlet pipe of the battery cooler 6 is connected to the second radiator 701 of the battery cooling component 7. The battery cooling component 7 is installed on one side of the battery pack 8.

[0026] See Figure 1 and Figure 3 The cooling assembly 2 includes a first radiator 201 and a first fan 202, and the circulating water pipe of the first radiator 201 is connected to the water tank pipe of the engine 3. The first fan 202 is installed on the surface of the first radiator 201.

[0027] In specific implementation, a cooling assembly 2 consisting of a first radiator 201 and a first fan 202 is set up to cool down the engine 3 separately. The running first fan 202 cools down the circulating water in the first radiator 201, so that the circulating water carries away the heat when it is pumped into the water tank of the engine 3, so that the hybrid light truck can ensure that the engine 3 has an independent cooling system when it is driven by the engine 3.

[0028] See Figure 1 and Figure 2 The battery cooling assembly 7 includes a second radiator 701 and a second fan 702, with the second radiator 701 and the second fan 702 mounted on the same side. The second fan 702 includes at least two fans, and the side of the second fan 702 away from the second radiator 701 is connected to the plate heat exchanger 9. The temperature controller 4 is connected to the plate heat exchanger 9 via bus communication, and the cooling water outlet of the plate heat exchanger 9 is connected to the cooling channel of the hybrid box 10.

[0029] In specific implementation, when the thermal management controller module 1 switches the three-way valve 12 to cool the battery pack 8 using the second radiator 701, the second fan 702 simultaneously blows air onto the second radiator 701 and the plate heat exchanger 9. This allows the battery pack 8 to carry away the heat dissipated from the outside of the plate heat exchanger 9 while it is being cooled. When the plate heat exchanger 9 is dissipating heat, cooling water can be introduced into the hybrid box 10. Thus, when the hybrid light truck is driven by electricity, the hybrid box 10 can be cooled synchronously without the need for additional heat dissipation components to cool the plate heat exchanger 9 separately.

[0030] See Figure 1 The battery pack 8 also includes a battery heat exchange plate 801, and the battery heat exchange plate 801 has a circulating water channel inside. The inlet end of the circulating water channel of the battery heat exchange plate 801 is connected to the outlet port of a three-way valve 12. The first inlet port of the three-way valve 12 is connected to the outlet port on one side of the second radiator 701, and the second inlet port of the three-way valve 12 is connected in series with the outlet port of the WPTC water heater 11; the WPTC water heater 11 is connected to the temperature controller 4 via bus communication.

[0031] In specific implementation, the thermal management controller module 1 communicates with the thermostat 4 and operates the thermostat 4 to control the refrigerant of the air conditioner 5 to flow into the pipeline of the battery cooler 6, so that the battery cooler 6 cools down the second radiator 701. The thermal management controller switches the three-way valve 12 to the state of delivering cooling water, so that the second radiator 701 and the battery heat exchange plate 801 are connected, while disconnecting the connection between the WPTC water heater 11 and the battery heat exchange plate 801. This allows the battery pack 8 to be cooled down, so that the hybrid light truck can be cooled down in time when the battery pack 8 is used for long-term power supply and drive, and prevent the hybrid light truck from overheating and overloading during long-term operation.

[0032] By switching the three-way valve 12 to the state of delivering heated water through the thermal management controller, the WPTC water heater 11 and the battery heat exchange plate 801 are connected, while the connection between the second radiator 701 and the battery heat exchange plate 801 is disconnected. This can protect the battery pack 8 from overheating, ensuring that the battery pack 8 has a low-temperature protection effect when the hybrid light truck starts at low temperatures, thereby reducing excessive energy consumption.

[0033] In summary, when the hybrid light truck is driven by the engine 3, the cooling assembly 2, consisting of the first radiator 201 and the first fan 202, can independently cool down the engine 3. When the hybrid light truck is powered by the battery pack 8 to drive the motor, multiple temperature sensors 13 are set to monitor the temperature of the engine 3, the battery pack 8, and the hybrid box 10. Through communication between the thermal management controller module 1 and the temperature controller 4, and by manually or automatically controlling the opening state of the three-way valve 12 in the existing technology, the operation of the battery pack 8 can be cooled down or heated up for protection. Thus, the thermal management controller completes the thermal management control of the engine 3, the battery pack 8, and the hybrid box 10 of the hybrid light truck. The contents not described in detail in this description are existing technologies known to those skilled in the art.

[0034] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A thermal management system for hybrid light trucks with manual and automatic control switching functions, characterized in that, Includes thermal management controller module, cooling components, thermostat, WPTC water heater, air conditioner, battery cooler, plate heat exchanger, battery cooling components, three-way valve and battery heat exchange plate; The thermal management controller module is connected to the cooling components, the thermostat and the temperature sensor respectively. The thermostat is connected to the air conditioning wire. At the same time, the thermostat is connected to the WPTC water heater and the plate heat exchanger via bus communication. The cooling assembly is connected to the engine's coolant tank, the air conditioner's refrigerant outlet is connected to the battery cooler's inlet, the battery cooler's outlet is connected to the battery cooling assembly, the battery cooling assembly is connected to the first inlet of the three-way valve, the three-way valve's outlet is connected to the battery heat exchange plate, the WPTC water heater is connected to the second inlet of the three-way valve and the plate heat exchanger respectively, and the battery cooling assembly is connected to the plate heat exchanger. The battery cooling component is installed on one side of the battery pack, and the cooling water outlet of the plate heat exchanger is connected to the cooling channel of the hybrid box. The battery cooling assembly includes a second radiator and a second fan, with one side of the second radiator facing the other side of the second fan, and the side of the second fan away from the second radiator facing the plate heat exchanger. When the thermal management controller module switches the three-way valve so that the second radiator cools the battery pack, the second fan blows air onto both the second radiator and the plate heat exchanger. When the plate heat exchanger is cooling the battery, cooling water is introduced into the hybrid tank. The refrigerant from the air conditioner is controlled by the thermostat to flow into the pipes of the battery cooler, so that the battery cooler cools the second radiator. The three-way valve is switched to the cooling water supply state by the thermal management controller, so that the second radiator and the battery heat exchange plate are connected, while the connection between the WPTC water heater and the battery heat exchange plate is disconnected, so as to cool the battery pack.

2. The hybrid light truck thermal management system with manual and automatic control switching function according to claim 1, characterized in that, The cooling assembly includes a first radiator and a first fan. The circulating water pipes of the first radiator are connected to the water tank pipes of the engine, and the first fan is mounted on the surface of the first radiator.

3. The hybrid light truck thermal management system with manual and automatic control switching function according to claim 1, characterized in that, The second fan comprises at least two fans.

4. The hybrid light truck thermal management system with manual and automatic control switching function according to claim 1, characterized in that, The battery heat exchange plate is located inside the battery pack, and a circulating water channel is provided inside the battery heat exchange plate.

5. The hybrid light truck thermal management system with manual and automatic control switching function according to claim 1, characterized in that, The thermal management controller switches the three-way valve to the state of delivering heated water, connecting the WPTC water heater and the battery heat exchange plate, while disconnecting the second radiator and the battery heat exchange plate to protect the battery pack from overheating.

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