Light truck integrated thermal management control system
By integrating a thermal management system with a compressor and an electronic expansion valve, efficient thermal management of light trucks is achieved, solving the problems of low integration and high energy consumption, improving the comfort and range of the battery and air conditioning, and providing intelligent control.
Patent Information
- Application Number
- CN202520140506.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-21
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2035-01-21
AI Technical Summary
The thermal management system of existing light truck models is not highly integrated, resulting in high costs, high energy consumption, poor air conditioning comfort, and insufficient battery cooling capacity, which affects the driving range.
An integrated thermal management system that connects a compressor and an electronic expansion valve, combined with a battery liquid cooling/liquid heating system and an air conditioning refrigeration/liquid heating system, uses a dual heat source heater and automatic frequency conversion control to achieve efficient integration of the battery and air conditioning, and has an automatic adjustment function.
It achieves efficient integration of air conditioning, battery and motor systems, reduces energy consumption, improves range, ensures comfort and battery life, and has intelligent control and fault detection functions.
Smart Images
Figure CN223631340U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to new energy automobile battery management field, concretely relates to a light truck integrated heat management control system. BACKGROUND
[0002] Pure electric vehicles are favored by manufacturers and consumers due to their zero emissions and low noise characteristics. However, the development of electric vehicles also faces many technical challenges, one of which is the development of an efficient integrated thermal management system.
[0003] The integrated thermal management system of an electric vehicle is different from that of a traditional gasoline vehicle. Gasoline vehicles typically use the waste heat from the engine for cabin heating, while electric vehicles, which do not have an internal combustion engine, must rely on other means to achieve heating and cooling. Therefore, an efficient integrated thermal management system is particularly important in electric vehicles, as it not only ensures the stable operation of the battery, motor, and electronic control system, but also ensures the comfort of the cabin. The performance of the battery, as the core component of an electric vehicle, is greatly affected by temperature. Overheating or overcooling can affect the service life and performance of the battery, and even pose a safety hazard. Therefore, an effective thermal management system is critical to ensuring the safe and efficient operation of an electric vehicle.
[0004] The existing pure electric light truck thermal management system can meet the basic use requirements of customers to some extent, but still has obvious defects:
[0005] 1. The cooling part of the light truck thermal management scheme mainly uses independent air conditioning systems, battery thermal management systems, and motor and electronic control cooling systems, which are independent of each other. The integration level of the thermal management system is not high, resulting in high cost and high energy consumption, which affects the vehicle's range.
[0006] 2. Or some thermal management functions are integrated, but in the integrated scheme, the air conditioner and battery cooling use thermal expansion valves, which can cause uneven distribution of refrigeration capacity, resulting in poor air conditioning comfort or insufficient battery cooling capacity.
[0007] 3. The heating part of the current pure electric vehicle uses an electric heater to heat the air conditioner and battery, which consumes a lot of electricity in winter, greatly affecting the vehicle's range. INVENTION CONTENTS
[0008] The technical problem to be solved by the utility model is that, in view of the three problems in the prior art, the utility model provides a light truck integrated heat management control system.
[0009] To solve the above problems, the utility model is implemented by the following technical scheme:
[0010] A light truck integrated heat management control system, comprising a compressor, the exhaust side of the compressor is connected with a first electronic expansion valve and a second electronic expansion valve respectively, wherein the compressor is connected with a battery liquid cooling / liquid heating system through the first electronic expansion valve; the compressor is connected with an air conditioning refrigeration / liquid heating system through the second electronic expansion valve;
[0011] The air conditioning refrigeration / liquid heating system comprises a warm core body and a cold core body.
[0012] The battery liquid cooling / liquid heating system comprises a refrigerant plate heat exchanger and a water plate heat exchanger connected in series through a series pipeline, and the battery is arranged on the series pipeline; and the water plate heat exchanger is provided with a heater in parallel, the heater and the water plate heat exchanger are connected with a three-way valve, and the other end of the three-way valve is connected with the warm core body.
[0013] The heater is a fuel heater and / or a water PTC heater, and the heater is arranged on a heating pipeline, and a second circulating water pump is further arranged on the heating pipeline.
[0014] The second circulating water pump is further connected with a second expansion water tank.
[0015] A first circulating water pump is arranged on the series pipeline, and the first circulating water pump is connected with a first expansion water tank.
[0016] A gas-liquid separator is arranged on the suction side of the compressor, the exhaust side of the compressor is connected with a heat dissipation system, and the outlet of the heat dissipation system is connected with the first electronic expansion valve and the second electronic expansion valve respectively; the heat dissipation system comprises a motor radiator and an electronic control radiator.
[0017] The motor radiator and the electronic control radiator share an electronic fan.
[0018] Blowers are arranged on the warm core body and the cold core body in the air conditioning refrigeration / liquid heating system.
[0019] Compared with the prior art, the utility model has the following beneficial effects:
[0020] 1、The utility model has the functions of air conditioning refrigeration, heating and defrosting of the cab, and has the functions of automatic air conditioning, compatible with the air conditioning function controlled by the central control screen and the air conditioning function controlled by APP remotely.
[0021] 2、The utility model has the function of battery cooling, can cool the battery quickly, and prolongs the service life of the battery.
[0022] 3、The utility model has the functions of heat dissipation of the motor, the motor controller and the DC-DC power module, when the temperature of the motor, the motor controller and the DC-DC power module is too high, the heat dissipation fan is started to dissipate heat for the motor system.
[0023] 4, The utility model discloses a compressor, heat dissipation fan automatic frequency conversion function, in the operation process according to water temperature, indoor temperature, outdoor temperature etc. State automatic adjustment compressor, fan speed, reduce the whole vehicle energy consumption while guaranteeing battery and air conditioning refrigeration.
[0024] 5, In the utility model, battery side and air conditioning side use electronic expansion valve, have according to the use working condition environment automatic adjustment expansion valve opening degree, thereby automatically distribute the refrigerating capacity of air conditioning system and battery water cooling system.
[0025] 6, The utility model discloses a double heat source heating function for the cab and battery, and the double heat source includes a fuel heater and a PTC water heater, which improves the running reliability and comfort of the vehicle while improving the vehicle's endurance. BRIEF DESCRIPTION OF DRAWINGS
[0026] Figure 1 It is the principle diagram of light truck integrated heat management control system of the utility model. DETAILED DESCRIPTION
[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.
[0028] In the description of the utility model, it is understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model.
[0029] As Figure 1 shown, a light truck integrated heat management control system, comprising a compressor 1, the exhaust side of compressor 1 is connected with first electronic expansion valve 2 and second electronic expansion valve 3 respectively, wherein, compressor 1 is connected with battery liquid cooling / liquid heating system through first electronic expansion valve 2;Compressor 1 is connected with air conditioning refrigeration / liquid heating system through second electronic expansion valve 3;
[0030] The air conditioning refrigeration / liquid heating system comprises a warm core 12 and a cold core 13;
[0031] The battery liquid cooling / liquid heating system comprises a refrigerant plate heat exchanger 6 and a water plate heat exchanger 7 connected in series through a series pipeline, and the battery 20 is arranged on the series pipeline; and the water plate heat exchanger 7 is provided with a heater in parallel, the heater and the water plate heat exchanger 7 are respectively connected with a three-way valve 11, and the other end of the three-way valve 11 is connected with a warm core body 12.
[0032] Further, the heater is a fuel heater 9 and / or a water PTC heater 10, the heater is arranged on a heating pipeline, and a second circulating water pump 15 is further arranged on the heating pipeline.
[0033] Further, a gas-liquid separator 14 is arranged on the suction side of the compressor 1, the discharge side of the compressor 1 is connected with a heat dissipation system, the outlet of the heat dissipation system is respectively connected with the first electronic expansion valve 2 and the second electronic expansion valve 3; the heat dissipation system comprises a motor heat radiator 4 and an electronic control heat radiator 5, and the motor heat radiator 4 and the electronic control heat radiator 5 share an electronic fan to realize cooling.
[0034] Further, the warm core body 12 and the cold core body 13 are both provided with a blower 18 in the air conditioner liquid cooling / liquid heating system.
[0035] The working principle of the utility model is:
[0036] 1. The air conditioner cooling / liquid heating system and the battery liquid cooling / liquid heating system share one compressor 1, so that the utility model has the functions of air conditioner cooling and heating, battery cooling and heating and motor heat dissipation, and the highly integrated air conditioner system greatly reduces the cost of the air conditioner.
[0037] 2. The electronic expansion valve is used on the air conditioner side and the battery side, so that the refrigerating capacity distribution is better, the comfort of the air conditioner is considered while the battery cooling effect is ensured.
[0038] 3. The utility model has a fuel heater 9 and a water PTC double heat source 10, the fuel heater 9 is used to heat the air conditioner and the battery when driving, the water PTC double heat source 10 is used to heat the air conditioner and the battery when charging, the driving endurance of the vehicle is greatly improved, and the three-way valve is used to distribute heat, so that the heating effects of the air conditioner and the battery are considered.
[0039] 4. The battery liquid cooling / liquid heating system uses two plate heat exchangers: a refrigerant plate heat exchanger 6 and a water plate heat exchanger 7. The refrigerant plate heat exchanger 6 cools the battery through heat exchange between the refrigerant and antifreeze, while the water plate heat exchanger 7 heats the battery through heat exchange between antifreeze and antifreeze. At the same time, the heating system where the heater is located uses a three-way valve 11. This three-way valve 11 can realize the flow distribution between the air conditioning side and the battery side. During heating, the three-way valve 11 can be used to achieve a reasonable distribution of heat between the air conditioning side and the battery side, while taking into account the heating effect of both the air conditioning and the battery.
[0040] 5. The unit has an automatic frequency conversion function, which automatically adjusts the compressor speed according to the indoor temperature and water temperature during operation, so as to reduce the energy consumption of the whole vehicle while ensuring the cooling of the battery and air conditioning.
[0041] 6. The unit has the function of real-time detection and reporting of faults in various components of the air conditioning system, which facilitates daily maintenance during vehicle operation.
[0042] 7. This unit has central control screen control and APP remote control functions, and also has OTA remote upgrade capability, which greatly improves the intelligence level of the air conditioner.
[0043] Compared to existing technologies, this unit utilizes dual electronic expansion valves for cooling control. By adjusting the opening of these valves to meet the different cooling needs of the air conditioning and battery sides, it achieves real-time distribution of cooling capacity. This ensures effective cooling on the battery side while improving comfort on the air conditioning side. Furthermore, energy consumption is reduced through cooling capacity distribution and the compressor's automatic frequency conversion function. For heating, a dual heat source system is used. In winter driving, the fuel heater is prioritized to heat the air conditioning and battery, addressing the pain point of poor range in pure electric vehicles during winter. This ensures passenger comfort while maintaining a stable battery temperature within a suitable range, improving charging speed and extending battery life.
[0044] The above description is only a preferred embodiment of the present utility model. It should be noted that those skilled in the art can make several changes and improvements without departing from the overall concept of the present utility model, and these should also be considered within the protection scope of the present utility model.
Claims
1. A light truck integrated thermal management control system, characterized by: The air conditioner comprises a compressor (1), a first electronic expansion valve (2) and a second electronic expansion valve (3) connected to the exhaust side of the compressor (1) respectively, wherein the compressor (1) is connected to a battery liquid cooling / liquid heating system through the first electronic expansion valve (2); and the compressor (1) is connected to an air conditioner refrigeration / liquid heating system through the second electronic expansion valve (3). The air conditioner refrigeration / liquid heating system comprises a warm core (12) and a cold core (13). The battery liquid cooling / liquid heating system comprises a refrigerant plate heat exchanger (6) and a water plate heat exchanger (7) connected in series through a series pipeline, and a battery is arranged on the series pipeline; and the water plate heat exchanger (7) is provided with a heater in parallel, and the heater and the water plate heat exchanger (7) are connected to a three-way valve (11), and the other end of the three-way valve (11) is connected to the warm core (12).
2. The integrated thermal management control system for light truck of claim 1, wherein: The heater is an oil heater (9) and / or a water PTC heater (10), and the heater is arranged on a heating pipeline, and a second circulating water pump (15) is further arranged on the heating pipeline.
3. The integrated thermal management control system of claim 2, wherein: The second circulating water pump (15) is further connected to a second expansion water tank (16).
4. The integrated thermal management control system for light truck of claim 1, wherein: A first circulating water pump (8) is arranged on the series pipeline, and the first circulating water pump (8) is connected to a first expansion water tank (17).
5. The integrated thermal management control system for light truck of claim 1, wherein: An air-liquid separator (14) is arranged on the air inlet side of the compressor (1), and the exhaust side of the compressor (1) is connected to a heat dissipation system, and the outlet of the heat dissipation system is connected to the first electronic expansion valve (2) and the second electronic expansion valve (3) respectively; and the heat dissipation system comprises a motor heat dissipation system (4) and an electric control heat dissipation system (5).
6. The integrated thermal management control system of claim 5, wherein: The motor heat dissipation system (4) and the electric control heat dissipation system (5) share one electronic fan.
7. The integrated thermal management control system for light truck of claim 1, wherein: In the air conditioner refrigeration / liquid heating system, air blowers are arranged on the warm core (12) and the cold core (13).