A thermal management architecture of a range-extended new energy recreational vehicle life water tank

Abstract

The utility model relates to new energy automobile whole car control field, concretely relates to a kind of heat management framework of life water tank of range-extender new energy motor home, including expansion water tank, coolant driving component, heat source component, life water tank and heat dissipation component, the expansion water tank and the heat source component be connected by water pipe, the heat source component and coolant driving component be connected by water pipe, the coolant driving component and the life water tank be connected by water pipe, the heat dissipation component is installed on the pipeline between the heat source component and the life water tank, solve the existing thawing slow of additional life water tank at present stage, electric safety hazard is prone to spontaneous combustion, the problem that the pipeline equipment of increase occupies life storehouse space reduces comfort and increases original vehicle power consumption burden, increases the cost of using car.

Description

Technical Field

[0001] This utility model relates to the field of vehicle control for new energy vehicles, specifically to a thermal management architecture for a water tank in a range-extended new energy RV. Background Technology

[0002] In recent years, with increasing emphasis on environmental protection, hybrid new energy commercial RVs have become the main direction in the commercial vehicle and RV sector.

[0003] Range-extended hybrid powertrains, as one type of hybrid architecture, are being vigorously developed in commercial vehicles. In RVs, the range-extended architecture, due to the presence of large-capacity power batteries, effectively solves the problem of power supply for the entire vehicle. In addition to electricity, RVs also face the issue of water supply. The domestic water tank, as an important water source for RVs, has received much attention, especially in winter. Due to the low temperature, the domestic water is prone to freezing, making it impossible to use, causing inconvenience to customers and affecting their comfort. In the past, dealers added auxiliary equipment such as electric heaters or diesel heaters to heat and thaw the water. Although feasible, adding auxiliary equipment has several drawbacks: firstly, it poses electrical safety hazards and is prone to spontaneous combustion; secondly, the added piping and equipment take up space in the living compartment, reducing comfort; and thirdly, it increases the burden on the original vehicle's electrical system, increasing operating costs.

[0004] In summary, a thermal management architecture for the domestic water tank of a range-extended new energy RV is proposed to address the problems mentioned in the background. Utility Model Content

[0005] The purpose of this invention is to provide a thermal management architecture for the domestic water tank of a range-extended new energy RV. By integrating the domestic water tank into the vehicle's thermal management system, it achieves waste heat utilization, thaws the domestic water tank at extreme temperatures, reduces the need for external equipment piping, does not occupy living compartment space, balances overall vehicle energy consumption, reduces the vehicle's electrical load, lowers operating costs, and promotes energy conservation and emission reduction. Depending on the usage scenario, the vehicle autonomously performs a thorough analysis of the overall vehicle thermal management system and thaws and heats the domestic water tank appropriately to ensure normal water use and a good user experience.

[0006] A thermal management architecture for a range-extended new energy RV's domestic water tank includes an expansion tank, a coolant drive component, a heat source component, a domestic water tank, and a heat dissipation component. The expansion tank and the heat source component are connected by a water pipe, the heat source component and the coolant drive component are connected by a water pipe, the coolant drive component and the domestic water tank are connected by a water pipe, and the heat dissipation component is installed on the pipeline between the heat source component and the domestic water tank. It also includes an ambient temperature sensor (2), and the ambient temperature sensor (2), the coolant drive component, the heat source component, the heat dissipation component, and the controller are connected.

[0007] Further specifying, the expansion tank includes a first expansion tank and a second expansion tank, and the coolant driving component includes a first electronic water pump, a second electronic water pump and an engine water pump. One end of the second electronic water pump is connected to the second expansion tank and the other end is connected to the heating component. Both the first electronic water pump and the engine water pump are connected to the first expansion tank at one end and the heating component at the other end.

[0008] Further defined, the heat source components are an electric drive high-voltage component, a water heater, and a range extender engine. The electric drive high-voltage component is connected to the second electronic water pump, the water heater is connected to the first electronic water pump, the electric drive high-voltage component (8) is connected to the heater via a DC / AC inverter, the range extender engine is connected to the engine water pump, and the heat dissipation components include a first radiator and a second radiator.

[0009] Further specifying, a second water temperature sensor and an electronic three-way valve are installed on the pipeline between the electrically driven high-voltage component and the domestic water tank. The first end of the electronic three-way valve is connected to the electrically driven high-voltage component, the second end is connected to the domestic water tank, and the third end is connected to the second radiator. A third water temperature sensor is installed inside the domestic water tank. A second check valve is installed on the pipeline between the domestic water tank and the second electronic water pump, and a first check valve is installed on the pipeline between the domestic water tank and the second electronic water pump.

[0010] Further specifying, a first water temperature sensor and a normally closed water valve are installed on the pipeline between the range extender engine and the domestic water tank, and one end of the first radiator is connected to the engine water pump, and the other end is connected to the range extender engine.

[0011] Furthermore, both the first expansion tank and the second expansion tank are equipped with degassing ports.

[0012] The advantages of this utility model over the current technology are as follows:

[0013] During driving, when the battery is low and the range extender engine is forcibly started or the range extender mode is selected, the range extender engine is used to defrost the domestic water tank. When the battery is fully charged, and the vehicle is parked, camping, or the electric drive system's coolant temperature does not reach the target temperature for an extended period, while the range extender engine is not running, the PTC water heater starts and heats the coolant. This heated coolant is then introduced into the domestic water tank for heat exchange to defrost or heat the water inside. During driving, the electric motor performs work, generating significant heat from the electric drive system. This heats the coolant in the cooling system, and when the temperature is suitable, the heated coolant is introduced into the domestic water tank for heat exchange to defrost or heat the water inside. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall thermal management architecture of this utility model;

[0015] Figure 2 This is a diagram illustrating the thermal management architecture of the high-pressure drive system for defrosting and heating the live water tank according to this utility model.

[0016] Figure 3 This is a diagram illustrating the thermal management architecture of the range extender engine for defrosting and heating the domestic water tank.

[0017] Figure 4 This is a diagram illustrating the thermal management architecture of the water heater of this utility model for defrosting and heating domestic water tanks.

[0018] The labels in the diagram correspond to: 1-domestic water tank, 2-ambient temperature sensor, 3-first expansion tank, 4-second expansion tank, 5-first electronic water pump, 6-second electronic water pump, 7-engine water pump, 8-electric drive high-voltage component, 9-range extender engine, 10-heater, 11-first radiator, 12-second radiator, 13-second water temperature sensor, 14-electronic three-way valve, 15-third water temperature sensor, 16-second check valve, 17-first water temperature sensor, 18-normally closed water valve, 19-thermostat, 20-first check valve, 21-water heater. Detailed Implementation

[0019] To enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention will be further described below in conjunction with the accompanying drawings and embodiments. Example 1

[0020] like Figures 1-4As shown, a thermal management architecture for a range-extended electric motorhome's domestic water tank includes an expansion tank, a coolant drive component, a heat source component, a domestic water tank 1, a heat dissipation component, and an ambient temperature sensor 2. The expansion tank includes a first expansion tank 3 and a second expansion tank 4. The coolant drive component includes a first electronic water pump 5, a second electronic water pump 6, and an engine water pump 7. The heat source components are an electric drive high-voltage component 8, a water heater 21, and a range-extending engine 9. One end of the second electronic water pump 6 is connected to the second expansion tank 4 via a water pipe, and the other end is connected to the electric drive high-voltage component 8 via a water pipe. One end of the first electronic water pump is connected to the first expansion tank via a water pipe, and the other end is connected to the water heater via a water pipe. The electric drive high-voltage component 8 is connected to the heater 10 via a DC / AC inverter. One end of the engine water pump 7 is connected to the first expansion tank 3 via a water pipe, and the other end is connected to the range-extending engine 9. 9 is connected by a water pipe. The heat dissipation component is installed on the pipe between the heat source component and the domestic water tank 1. The heat dissipation component includes a first radiator 11 and a second radiator 12. A second water temperature sensor 13 and an electronic three-way valve 14 are installed on the pipe between the electric drive high voltage component 8 and the domestic water tank 1. The first end of the electronic three-way valve 14 is connected to the electric drive high voltage component 8, the second end is connected to the domestic water tank 1, and the third end is connected to the second radiator 12. A third water temperature sensor 15 is installed inside the domestic water tank 1. A second check valve 16 is installed on the pipe between the domestic water tank 1 and the second electronic water pump 6. A first water temperature sensor 17 and a normally closed water valve 18 are installed on the pipe between the range extender engine 9 and the domestic water tank 1. One end of the first radiator 11 is connected to the engine water pump 7, and the other end is connected to the range extender engine 9. A degassing port is installed on both the first expansion tank 3 and the second expansion tank 4.

[0021] The specific principle of the high-pressure drive system for the defrosting and heating thermal management system of the domestic and imported water tanks is as follows: When the water temperature of the second water temperature sensor 13 reaches the first target temperature, the second electronic water pump 6 starts to work. The valve port between the electrically driven high-pressure component 8 of the electronic three-way valve 14 and the domestic water tank 1 opens, and the valve port to the second radiator 12 closes. The flow sequence of the coolant in the second expansion tank 4 is: second electronic water pump 6 → electrically driven high-pressure component 8 → second water temperature sensor 13 → electronic three-way valve 14 → domestic water tank 1 → third water temperature sensor 15 → second one-way valve. 16 → Second electronic water pump 6: When the water temperature of the second water temperature sensor 13 reaches the second target temperature, the electronic three-way valve 14 adjusts the valve port ratio, and the second radiator 12 starts working. Part of the water flows into the second radiator 12 for cooling to prevent the electric drive system from overheating; part of the water continues to thaw and heat the domestic water tank 1. When the temperature of the third water temperature sensor 15 reaches the set target, the valve port between the electric drive high-pressure component 8 of the electronic three-way valve 14 and the domestic water tank 1 closes, and the valve port to the second radiator 12 opens, and the system stops working. Example 2

[0022] During driving, when the power battery is forced to start the range extender engine 9 or the range extender mode is selected, the range extender engine 9 runs at high speed, generating a large amount of heat. When the engine coolant temperature is suitable, the waste heat generated by the engine is introduced into the domestic water tank 1, using heat exchange to defrost or heat the water inside the domestic water tank 1. The specific working principle is as follows: when the water temperature of the engine water temperature sensor 1 reaches the first target temperature, the normally closed water valve opens, and the flow sequence of the coolant in the first expansion tank 3 is: engine water pump 7 → range extender engine 9 → first water temperature sensor 17 → normally closed water valve 18 → domestic water tank 1 → third water temperature sensor 15 → engine water pump 7. When the water temperature of the first water temperature sensor 17 reaches the second target temperature, the thermostat 19 opens, and the first radiator 11 starts to work. Part of the high-temperature engine coolant flows into the first radiator 11 to cool down and prevent the engine system from overheating; part of it continues to defrost, deheat, and heat the domestic water tank 1. When the temperature of the third water temperature sensor 15 reaches the set target, the normally closed water valve 18 closes, and the system stops working. Example 3

[0023] When the battery is fully charged, and the water temperature of the parking / camping or electric drive system fails to reach the first target temperature for an extended period, while the range extender is not activated, the water heater 8 starts and heats the coolant. The heated coolant is then introduced into the domestic water tank 1, where heat exchange is used to defrost or heat the water inside the domestic water tank 1. The flow sequence of the coolant in the first expansion tank 3 is as follows: first electronic water pump 5 → water heater 8 → first one-way valve 20 → domestic water tank 1 → third water temperature sensor 15 → first electronic water pump 5. When the temperature of the third water temperature sensor 15 reaches the set target, the system stops working.

[0024] This invention integrates a high-voltage DC / AC inverter into a high-voltage system component. Once the domestic water tank 1 is thawed or heated to the predetermined water temperature target, the user can use this function to reheat the domestic water for daily use, thereby improving the water quality of the RV.

[0025] The above provides a detailed description of the thermal management architecture of a range-extended new energy RV's domestic water tank. The specific embodiments are only used to help understand the method and core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from it, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A thermal management architecture of a range-extended new energy recreational vehicle water tank, characterized in that: It includes an expansion tank, a coolant drive component, a heat source component, a domestic water tank (1), and a heat dissipation component. The expansion tank and the heat source component are connected by a water pipe. The heat source component and the coolant drive component are connected by a water pipe. The coolant drive component and the domestic water tank (1) are connected by a water pipe. The heat dissipation component is installed on the pipeline between the heat source component and the domestic water tank. It also includes an ambient temperature sensor (2). The ambient temperature sensor (2), the coolant drive component, the heat source component, the heat dissipation component, and the controller are connected.

2. The thermal management architecture of claim 1, wherein: The expansion tank includes a first expansion tank (3) and a second expansion tank (4). The coolant drive component includes a first electronic water pump (5), a second electronic water pump (6), and an engine water pump (7). One end of the second electronic water pump (6) is connected to the second expansion tank (4), and the other end is connected to the heating component. The first electronic water pump (5) and the engine water pump (7) are both connected to the first expansion tank (3) at one end and to the coolant drive component and the heat source component at the other end.

3. The thermal management architecture for a range-extended electric vehicle's domestic water tank according to claim 2, characterized in that: The heat source components are an electric drive high voltage component (8), a water heater (21), and a range extender engine (9). The electric drive high voltage component (8) is connected to the second electronic water pump (6), the water heater (21) is connected to the first electronic water pump (5), and the range extender engine (9) is connected to the engine water pump (7). The heat dissipation components include a first radiator (11) and a second radiator (12).

4. The thermal management architecture for a range-extended new energy RV's domestic water tank according to claim 3, characterized in that: A second water temperature sensor (13) and an electronic three-way valve (14) are installed on the pipeline between the electric high-voltage component (8) and the domestic water tank (1). The first end of the electronic three-way valve (14) is connected to the electric high-voltage component (8), the second end is connected to the domestic water tank (1), and the third end is connected to the second radiator (12). A third water temperature sensor (15) is installed inside the domestic water tank (1). A second check valve (16) is installed on the pipeline between the domestic water tank (1) and the second electronic water pump (6). A first check valve (20) is installed on the pipeline between the domestic water tank (1) and the second electronic water pump (6).

5. The thermal management architecture for a range-extended new energy RV's domestic water tank according to claim 3, characterized in that... A first water temperature sensor (17) and a normally closed water valve (18) are installed on the pipeline between the range extender engine (9) and the domestic water tank (1). One end of the first radiator (11) is connected to the engine water pump (7), and the other end is connected to the range extender engine (9).

6. The thermal management architecture for a range-extended electric vehicle's domestic water tank according to claim 2, characterized in that: Both the first expansion tank (3) and the second expansion tank (4) are equipped with degassing ports.

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