New energy loading and chassis electric drive integrated thermal management method and system

Abstract

The invention relates to a new energy upload and chassis electric drive integrated thermal management method and system, which comprises a chassis thermal management loop and an upload thermal management loop, and is characterized in that a radiator assembly is connected with a chassis thermal management system to form the chassis thermal management loop; the radiator assembly is connected with an upper-mounted cooling loop through an upper-mounted heat management system to form an upper-mounted heat management loop, and water temperature sensors are arranged at a water inlet and a water outlet of the radiator assembly. The vehicle control unit VCU monitors the temperature of a water inlet and a water outlet of the radiator assembly, the temperature of a chassis heat management loop and the temperature of an upper heat management loop in real time through a water temperature sensor to conduct heat management control. A top-mounted heat management system which is independently installed and used is omitted, a chassis electric drive integrated heat management system is integrated with a top-mounted heat management loop, and cost and weight are reduced; the double-control method of the temperature of the water inlet and the water outlet of the radiator assembly and the temperature of the radiating element body is adopted to achieve more accurate control, and meanwhile the different requirements of a universal chassis and multi-type upload refitting can be met.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle thermal management, and in particular to a new energy upper body and chassis electric drive integrated thermal management method and system. Background Art

[0002] With the advancement of urbanization, new energy sanitation vehicles have become the focus of promotion and use. This type of vehicle combines the characteristics of zero emissions, zero pollution, and low noise, and has shown better adaptability and superiority in urban cleaning and transportation in specific scenarios.

[0003] In order to improve the quality of urban environment, trucks and buses using diesel engines are gradually being eliminated in cities, and some road right policies have been introduced to restrict the entry of vehicles that do not meet emission standards. In view of the different usage functions and working conditions of new energy sanitation special vehicles, the upper motors and related controllers are different and diverse due to different models. The thermal management system of the upper motors and related controllers is generally matched by the upper enterprises themselves, which is independent of the chassis drive motors and related controllers thermal management system, and the upper motors and related controllers thermal management system need to add independent control modules, resulting in low vehicle integration, high cost, and poor versatility of the vehicle thermal management system. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide a new energy upper body and chassis electric drive integrated thermal management method and system.

[0005] In order to solve the problems in the above background technology, the present invention is implemented by the following technical solutions:

[0006] A new energy body and chassis electric drive integrated thermal management method, including a chassis thermal management circuit and a body thermal management circuit, a radiator assembly is connected to the chassis thermal management system to form the chassis thermal management circuit; the radiator assembly is connected to the body cooling circuit through the body thermal management system to form the body thermal management circuit, the water inlet and outlet of the radiator assembly are both provided with water temperature sensors, and a vehicle controller VCU monitors the water inlet and outlet of the radiator assembly and the temperatures of the chassis thermal management circuit and the body thermal management circuit components in real time through the water temperature sensor to perform thermal management control.

[0007] A new energy body and chassis electric drive integrated thermal management system, used to implement the new energy body and chassis electric drive integrated thermal management method as described above, including a radiator assembly, a chassis electronic water pump, an integrated controller, a drive motor, an air compressor, a body electronic water pump, a body cooling circuit and a water temperature sensor;

[0008] The water temperature sensor includes a water inlet temperature sensor and a water outlet temperature sensor;

[0009] The water outlet of the radiator assembly is connected to a tee through a water outlet temperature sensor, and the tee is respectively connected to a chassis electronic water pump and a top-mounted electronic water pump, and the chassis electronic water pump is sequentially connected to the integrated controller, the drive motor and the air compressor through pipelines, and the air compressor is connected to the water inlet of the radiator assembly through the water inlet temperature sensor to form a chassis thermal management loop; the top-mounted electronic water pump is connected to the water inlet of the top-mounted cooling loop through a water inlet pressure reducing valve, and the water outlet of the top-mounted cooling loop is connected to the water outlet pressure reducing valve, and the water outlet pressure reducing valve is connected to the water inlet of the radiator assembly through the water inlet temperature sensor to form a top-mounted thermal management loop.

[0010] Preferably, a one-way valve is provided between the chassis electronic water pump and the integrated controller, and between the upper electronic water pump and the water inlet pressure reducing valve.

[0011] Preferably, it also includes a condenser assembly and an electronic fan, wherein the condenser assembly, the radiator assembly and the electronic fan are fixed to the upper wing surface of the frame through a radiator bracket and are located at the lower end of the cab.

[0012] Preferably, the radiator assembly is provided with a wind shield.

[0013] Compared with the prior art, the present invention has the following beneficial technical effects:

[0014] The present invention eliminates the separately installed thermal management system for the upper body, and the chassis electric drive integrated thermal management system integrates the upper body thermal management circuit, thereby reducing costs and weight;

[0015] The dual control method of the inlet and outlet temperatures of the radiator assembly and the body temperature of the heat dissipation element in the chassis thermal management circuit and the upper body thermal management circuit can achieve more precise control, while meeting the different needs of universal chassis and various types of upper body modifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is the overall framework diagram of the present invention.

[0017] Reference numerals

[0018] 1. Radiator assembly; 2. Chassis electronic water pump; 3. Integrated controller; 4. Drive motor; 5. Air compressor; 6. Upper electronic water pump; 7. Upper cooling circuit; 8. Inlet water temperature sensor; 9. Outlet water temperature sensor; 10. Inlet pressure reducing valve; 11. Outlet pressure reducing valve; 12. Check valve; 13. Condenser assembly; 14. Electronic fan. DETAILED DESCRIPTION

[0019] Example 1

[0020] like Figure 1As shown, a new energy body and chassis electric drive integrated thermal management method includes a chassis thermal management circuit and a body thermal management circuit. The radiator assembly 1 is connected to the chassis thermal management system to form a chassis thermal management circuit; the radiator assembly 1 is connected to the body cooling circuit through the body thermal management system to form a body thermal management circuit. The water inlet and outlet of the radiator assembly 1 are both provided with water temperature sensors. The vehicle controller VCU monitors the water inlet, water outlet and the temperature of the chassis thermal management circuit and the body thermal management circuit of the radiator assembly in real time through the water temperature sensor to perform thermal management control.

[0021] Example 2

[0022] A new energy upper body and chassis electric drive integrated thermal management system, used to implement the above new energy upper body and chassis electric drive integrated thermal management method, including a radiator assembly 1, a chassis electronic water pump 2, an integrated controller 3, a drive motor 4, an air compressor 5, an upper body electronic water pump 6, an upper body cooling circuit 7 and a water temperature sensor;

[0023] The water temperature sensor includes an inlet water temperature sensor 8 and an outlet water temperature sensor 9;

[0024] The water outlet of the radiator assembly 1 is connected to the tee through the water outlet temperature sensor 9, and the tee is respectively connected to the chassis electronic water pump 2 and the upper body electronic water pump 6. The chassis electronic water pump 2 is connected to the integrated controller 3, the drive motor 4 and the air compressor 5 in sequence through pipelines. The air compressor 5 is connected to the water inlet of the radiator assembly 1 through the water inlet temperature sensor 8 to form a chassis thermal management loop; the upper body electronic water pump 6 is connected to the water inlet of the upper body cooling circuit 7 through the water inlet pressure reducing valve 10, and the water outlet of the upper body cooling circuit 7 is connected to the water outlet pressure reducing valve 11. The water outlet pressure reducing valve 11 is connected to the water inlet of the radiator assembly 1 through the water inlet temperature sensor 8 to form a upper body thermal management loop.

[0025] The chassis electronic water pump 2 is connected to the integrated controller 3, the drive motor 4 and the air compressor 5 in sequence through pipelines, and then returns water to the radiator assembly 1; the upper body electronic water pump 6 is connected to the water inlet pressure reducing valve 10 through a pipeline, and the water inlet pressure reducing valve 10 is connected to the reserved upper body cooling circuit 7, and the return water of the upper body cooling circuit 7 is returned to the radiator assembly 1 through the water outlet pressure reducing valve 11. The water inlet pressure reducing valve 10 can adjust the flow of the upper body cooling circuit 7, and a connection port is reserved for the upper body cooling circuit 7. When the upper body cooling circuit 7 is not connected, the water inlet pressure reducing valve 10 is closed, and after the upper body cooling circuit 7 is connected, the water inlet pressure reducing valve 10 and the water outlet pressure reducing valve 11 are opened to realize the smooth flow of the upper body cooling circuit 7.

[0026] A one-way valve 12 is provided between the chassis electronic water pump 2 and the integrated controller 3 , and between the upper electronic water pump 6 and the water inlet pressure reducing valve 10 .

[0027] A one-way valve 12 is provided to ensure that the coolant flows from the radiator assembly 1 to the chassis electronic water pump 2 and from the radiator assembly 1 to the upper electronic water pump 6, so as to avoid the reverse surge of the coolant causing the upper electronic water pump 6 or the chassis electronic water pump 2, resulting in reverse damage to the drive motor 4.

[0028] It also includes a condenser assembly 13 and an electronic fan 14. The condenser assembly 13, the radiator assembly 1 and the electronic fan 14 are fixed to the upper wing surface of the frame through a radiator bracket and are located at the lower end of the cab.

[0029] The radiator assembly 1 is provided with a wind shield.

Claims

1. A new energy upper body and chassis electric drive integrated thermal management method, characterized in that: The invention comprises a chassis thermal management circuit and a body thermal management circuit. The radiator assembly (1) is connected to the chassis thermal management system to form the chassis thermal management circuit. The radiator assembly (1) is connected to the body cooling circuit through the body thermal management system to form the body thermal management circuit. The water inlet and outlet of the radiator assembly (1) are both provided with water temperature sensors. The vehicle controller VCU monitors the water inlet and outlet of the radiator assembly and the temperature of the chassis thermal management circuit and the body thermal management circuit in real time through the water temperature sensors to perform thermal management control.

2. A new energy upper body and chassis electric drive integrated thermal management system, used to implement the new energy upper body and chassis electric drive integrated thermal management method according to claim 1, characterized in that: It comprises a radiator assembly (1), a chassis electronic water pump (2), an integrated controller (3), a drive motor (4), an air compressor (5), a top-mounted electronic water pump (6), a top-mounted cooling circuit (7) and a water temperature sensor; The water temperature sensor comprises a water inlet temperature sensor (8) and a water outlet temperature sensor (9); The water outlet of the radiator assembly (1) is connected to a tee through a water outlet temperature sensor (9), and the tee is respectively connected to a chassis electronic water pump (2) and a top-mounted electronic water pump (6). The chassis electronic water pump (2) is connected to the integrated controller (3), the drive motor (4) and the air compressor (5) in sequence through pipelines. The air compressor (5) is connected to the water inlet of the radiator assembly (1) through the water inlet temperature sensor (8), thereby forming a chassis thermal management circuit. The top-mounted electronic water pump (6) is connected to the water inlet of the top-mounted cooling circuit (7) through a water inlet pressure reducing valve (10), and the water outlet of the top-mounted cooling circuit (7) is connected to a water outlet pressure reducing valve (11). The water outlet pressure reducing valve (11) is connected to the water inlet of the radiator assembly (1) through the water inlet temperature sensor (8), thereby forming a top-mounted thermal management circuit.

3. The new energy upper body and chassis electric drive integrated thermal management system according to claim 2 is characterized in that: One-way valves (12) are provided between the chassis electronic water pump (2) and the integrated controller (3), and between the upper electronic water pump (6) and the water inlet pressure reducing valve (10).

4. The new energy upper body and chassis electric drive integrated thermal management system according to claim 2 is characterized in that: It also includes a condenser assembly (13) and an electronic fan (14); the condenser assembly (13), the radiator assembly (1) and the electronic fan (14) are fixed to the upper wing surface of the vehicle frame through a radiator bracket and are located at the lower end of the cab.

5. The new energy upper body and chassis electric drive integrated thermal management system according to claim 4 is characterized in that: The radiator assembly (1) is provided with a wind shield.

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