Wide temperature range's on-vehicle cooling system

文档序号：1854442 发布日期：2021-11-19 浏览：9次中文

阅读说明：本技术 一种宽温域的车载散热系统 (Wide temperature range's on-vehicle cooling system ) 是由张佳卉吴玉峰籍力刘洋李源浩曹元福王东杰胡煦东李振平于 2021-08-25 设计创作，主要内容包括：本发明属于柴电混动车辆散热技术领域,具体涉及一种宽温域的车载散热系统,其包括：高温环、低温环和制冷环三条冷却液循环环路,每条环路由独立的水泵来完成冷却液的循环,且各个环路冷却液相对独立,冷却空气侧共用一个电驱动的冷却风扇；其中,制冷环的冷凝器与常规散热器并置,再与低温环的低温散热器和高温环的高温散热器串联布置；系统内的冷却空气先流经常规散热器与冷凝器,然后再流经低温散热器和高温散热器,最后通过冷却风扇排出。高温环、低温环和制冷环单独配置膨胀水箱,用于平衡系统水侧压力和系统排气、补水。与传统散热系统相比,本发明技术方案可满足柴电混动车辆多散热源、多温度目标、宽温域的散热需求。(The invention belongs to the technical field of heat dissipation of diesel-electric hybrid vehicles, and particularly relates to a wide-temperature-range vehicle-mounted heat dissipation system, which comprises: the cooling system comprises three cooling liquid circulation loops, namely a high-temperature loop, a low-temperature loop and a refrigerating loop, wherein each loop is used for completing the circulation of cooling liquid by an independent water pump, the cooling liquid of each loop is relatively independent, and the cooling air side shares an electrically driven cooling fan; the condenser of the refrigeration ring is juxtaposed to a conventional radiator and then is arranged in series with the low-temperature radiator of the low-temperature ring and the high-temperature radiator of the high-temperature ring; the cooling air in the system firstly flows through a conventional radiator and a condenser, then flows through a low-temperature radiator and a high-temperature radiator, and is finally discharged through a cooling fan. The high-temperature ring, the low-temperature ring and the refrigeration ring are independently provided with expansion water tanks for balancing the pressure of the water side of the system and the exhaust and water supplement of the system. Compared with the traditional heat dissipation system, the technical scheme of the invention can meet the heat dissipation requirements of the diesel-electric hybrid vehicle on multiple heat dissipation sources, multiple temperature targets and wide temperature range.)

1. The utility model provides a wide temperature range's on-vehicle cooling system which is used for the cooling heat dissipation of diesel-electric hybrid vehicle, wide temperature range's on-vehicle cooling system includes: the cooling system comprises three cooling liquid circulation loops, namely a high-temperature loop, a low-temperature loop and a refrigerating loop, wherein each loop is used for completing the circulation of cooling liquid by an independent water pump, the cooling liquid of each loop is relatively independent, and the cooling air side shares an electrically driven cooling fan;

the wide temperature range vehicle-mounted heat dissipation system comprises: the system comprises a high-temperature radiator, a high-temperature expansion water tank, an engine water pump, an engine, a low-temperature radiator, a low-temperature expansion water tank, a low-temperature water pump 1, a low-temperature water pump 2, a water-air intercooler, a generator controller, a generator, a DC-DC converter, a fan controller, a left driving motor, a right driving motor controller, a right driving motor, a conventional radiator, a condenser, a refrigeration expansion water tank, a refrigeration water pump, a refrigeration module, a battery pack and an electromagnetic directional valve;

wherein the components of the high temperature ring include: the system comprises a high-temperature radiator, a high-temperature expansion water tank, an engine water pump and an engine; the components of the cryogenic ring include: the system comprises a low-temperature radiator, a low-temperature expansion water tank, a low-temperature water pump 1, a low-temperature water pump 2, a water-air intercooler, a generator controller, a generator, a DC-DC converter, a fan controller, a left driving motor, a right driving motor controller and a right driving motor; the components of the refrigeration loop include: the system comprises a conventional radiator, a condenser, a refrigeration expansion water tank, a refrigeration water pump, a refrigeration module, a battery pack and an electromagnetic directional valve;

the engine water pump is directly driven by the engine, and the low-temperature water pump 1, the low-temperature water pump 2 and the refrigeration water pump are electrically driven to meet the requirements of pure electric running working conditions;

the low-temperature ring is designed into double branches, and respective circulation is completed under the driving of a low-temperature water pump 1 and a low-temperature water pump 2 respectively; the double branches share a low-temperature radiator and a low-temperature expansion water tank;

the condenser of the refrigeration ring is juxtaposed to a conventional radiator and then is arranged in series with the low-temperature radiator of the low-temperature ring and the high-temperature radiator of the high-temperature ring; the cooling air in the system firstly flows through a conventional radiator and a condenser, then flows through a low-temperature radiator and a high-temperature radiator, and is finally discharged through a cooling fan.

2. The wide temperature range vehicle-mounted heat dissipation system of claim 1, wherein the low-temperature heat sink has two inlets and two outlets.

3. The wide temperature range vehicle-mounted heat dissipation system according to claim 2, wherein in the low-temperature ring, the generator controller is connected in series with the generator and then connected in parallel with the water-air cooler, one end of the parallel component is connected with one end of the low-temperature water pump 1, the other end of the parallel component is connected with the first water inlet of the low-temperature radiator, and the first water outlet of the low-temperature radiator is connected to the other end of the low-temperature water pump 1; thereby forming a first branch of the cryogenic ring;

the DC-DC converter and the left driving motor controller are connected with the left driving motor in series, the fan controller and the left driving motor controller are connected with the left driving motor in series, the two series-connected components are connected in parallel, one end of the parallel-connected component is connected with one end of the low-temperature water pump 2, the other end of the parallel-connected component is connected with a second water inlet of the low-temperature radiator, and a second water outlet of the low-temperature radiator is connected to the other end of the low-temperature water pump 2; thereby forming a second branch of the cryogenic ring.

4. The wide temperature range in-vehicle heat dissipation system of claim 1,

the high-temperature ring, namely the high-temperature ring of the engine,

the high-temperature radiator is used as a heat exchanger of a high-temperature ring of the engine and used for releasing heat of the engine to the atmospheric environment;

the high-temperature expansion water tank is used for providing a liquid supplementing space, a steam removing space and an expansion space for the high-temperature ring cooling liquid of the engine, adjusting the pressure balance of the system and maintaining the reliable work of the system.

5. The wide temperature range in-vehicle heat dissipation system of claim 1,

in the low-temperature ring, the temperature of the low-temperature ring is higher than that of the low-temperature ring,

the low-temperature radiator is used as a heat exchanger of a low-temperature ring and used for releasing heat in the water-air intercooler, a water cooling plate of a generator controller, the generator, a left driving motor controller, a left driving motor, a right driving motor controller, a right driving motor, a DC-DC converter and a fan controller to the atmospheric environment;

the low-temperature expansion water tank is used for providing a liquid supplementing space, a steam removing space and an expansion space for cooling liquid in the low-temperature ring, adjusting the pressure balance of the system and maintaining the reliable work of the system;

the fan controller is used for controlling the operation of the cooling fan motor; the water cooling plate of the fan controller is used for cooling the IGBT element of the fan motor controller for heat dissipation and cooling;

the low-temperature water pump 1 is used for driving cooling liquid in the low-temperature ring internal water-air intercooler, the generator controller and the generator to flow;

and the low-temperature water pump 2 is used for driving two driving motors in the low-temperature ring and the flow of cooling liquid in two driving motor controllers, a fan controller and a DC-DC converter.

6. The wide temperature range in-vehicle heat dissipation system of claim 1,

in the refrigeration ring, the working process is designed into two modes of conventional heat dissipation and refrigeration heat exchange, and the refrigeration ring is switched to operate through an electromagnetic directional valve according to the ambient temperature;

the condenser is used for releasing the heat of the battery pack to the atmospheric environment when the refrigeration ring works;

the electromagnetic directional valve is used for switching two modes of conventional heat dissipation and refrigeration heat exchange of the refrigeration ring;

the conventional radiator is used for releasing the heat of the battery pack to the atmospheric environment during conventional heat exchange;

the refrigeration expansion water tank is used for providing a liquid supplementing space, a vapor removing space and an expansion space for the cooling liquid of the refrigeration ring, adjusting the pressure balance of the system and maintaining the reliable work of the system;

the refrigeration module is used for providing low-temperature cooling water for battery heat dissipation;

the refrigeration water pump is used for driving cooling liquid of the refrigeration loop to flow;

all parts of the refrigerating ring are connected in an all-welded mode to reduce leakage of the refrigerant.

7. The wide temperature range in-vehicle heat dissipation system of claim 1, further comprising a support mechanism serving as a support unit for the entire wide temperature range in-vehicle heat dissipation system.

8. The wide temperature range in-vehicle cooling system of claim 1, wherein the cooling fan is an axial fan for providing cooling air volume to the radiator.

9. The wide temperature range vehicle-mounted heat dissipation system according to claim 1, wherein the cooling fan is horizontally disposed, each heat sink has an angle of 8 ° with the horizontal plane, and the cooling air flows in a "U" shaped air duct.

10. The wide temperature range vehicle-mounted heat dissipation system according to claim 1, wherein the high temperature radiator, the low temperature radiator, the conventional radiator, the condenser, the high temperature expansion water tank, the low temperature expansion water tank, the refrigeration expansion water tank, the low temperature water pump 1, the low temperature water pump 2, the refrigeration water pump, and the cooling fan are integrally designed in one frame, so that integral hoisting can be realized.

Technical Field

The invention belongs to the technical field of heat dissipation of diesel-electric hybrid vehicles, and particularly relates to a wide-temperature-range vehicle-mounted heat dissipation system.

Background

With the rapid development of diesel-electric hybrid technology and high-power-density battery technology, the heat dissipation task of the vehicle-mounted heat dissipation system is more and more prominent, and the temperature control target of the vehicle-mounted heat dissipation system is continuously increased while the number of heat source components is increased. Such as:

engine coolant: 100-110 ℃;

engine oil: 110-120 ℃;

pressurized air: 150-170 ℃;

a controller: 105-120 ℃;

generator/motor: 180-200 ℃;

the power converter: 105-120 ℃;

a battery: 50-60 ℃;

the temperature difference is as high as about 120 ℃ from 50-60 ℃ required by the highest temperature resistance of the battery to 150-170 ℃ of the pressurized air, the temperature range is very wide, and great technical challenges are brought to the design of a heat dissipation system, so that the traditional heat dissipation system is difficult to meet the development of new technology, and the heat dissipation technology needs to seek new breakthroughs.

Disclosure of Invention

Technical problem to be solved

The technical problem to be solved by the invention is as follows: how to provide a heat dissipation system which can meet the heat dissipation of a plurality of heat sources and a plurality of temperature control targets.

(II) technical scheme

In order to solve the above technical problem, the present invention provides a wide temperature range vehicle-mounted heat dissipation system for cooling and dissipating heat of a diesel-electric hybrid vehicle, the wide temperature range vehicle-mounted heat dissipation system comprising: the cooling system comprises three cooling liquid circulation loops, namely a high-temperature loop, a low-temperature loop and a refrigerating loop, wherein each loop is used for completing the circulation of cooling liquid by an independent water pump, the cooling liquid of each loop is relatively independent, and the cooling air side shares an electrically driven cooling fan;

Wherein, the low temperature radiator is double-in and double-out, namely two water inlets and two water outlets.

In the low-temperature ring, the generator controller is connected with the generator in series and then connected with the water-air intercooler in parallel, one end of the parallel component is connected with one end of the low-temperature water pump 1, the other end of the parallel component is connected with a first water inlet of the low-temperature radiator, and a first water outlet of the low-temperature radiator is connected to the other end of the low-temperature water pump 1; thereby forming a first branch of the cryogenic ring;

Wherein the high-temperature ring, namely the high-temperature ring of the engine,

the high-temperature radiator is used as a heat exchanger of a high-temperature ring of the engine and used for releasing heat of the engine to the atmospheric environment;

Wherein, in the low-temperature ring,

the low-temperature water pump 1 is used for driving cooling liquid in the low-temperature ring internal water-air intercooler, the generator controller and the generator to flow;

In the refrigeration ring, the working process is designed into two modes of conventional heat dissipation and refrigeration heat exchange, and the refrigeration ring is switched to operate through an electromagnetic directional valve according to the ambient temperature;

the condenser is used for releasing the heat of the battery pack to the atmospheric environment when the refrigeration ring works;

the electromagnetic directional valve is used for switching two modes of conventional heat dissipation and refrigeration heat exchange of the refrigeration ring;

the conventional radiator is used for releasing the heat of the battery pack to the atmospheric environment during conventional heat exchange;

the refrigeration module is used for providing low-temperature cooling water for battery heat dissipation;

the refrigeration water pump is used for driving cooling liquid of the refrigeration loop to flow;

all parts of the refrigerating ring are connected in an all-welded mode to reduce leakage of the refrigerant.

The wide-temperature-range vehicle-mounted heat dissipation system further comprises a supporting mechanism used as a supporting unit of the whole wide-temperature-range vehicle-mounted heat dissipation system.

The cooling fan is an axial flow fan and is used for providing cooling air volume for the radiator.

The cooling fan is horizontally arranged, the included angle between each radiator and the horizontal plane is 8 degrees, and cooling air flows in a U-shaped air channel form.

The high-temperature radiator, the low-temperature radiator, the conventional radiator, the condenser, the high-temperature expansion water tank, the low-temperature expansion water tank, the refrigeration expansion water tank, the low-temperature water pump 1, the low-temperature water pump 2, the refrigeration water pump and the cooling fan are integrally designed in one frame, so that the integrated hoisting can be realized.

(III) advantageous effects

Aiming at the requirements of the prior art, the invention provides a heat dissipation system capable of meeting heat dissipation of a plurality of heat sources and a plurality of temperature control targets, namely, vehicle heat sources are classified according to the temperature range of normal work of the vehicle heat sources, the heat source with higher temperature is planned in a high-temperature loop of the heat dissipation system, the heat source with lower temperature is planned in a low-temperature loop of the heat dissipation system, and for heat dissipation of a battery pack, as the conventional forced convection heat transfer cannot meet the heat dissipation requirement at the ambient temperature of 55 ℃, the heat dissipation is realized by introducing phase change heat transfer, so that the vehicle-mounted heat dissipation system with wide temperature range is constructed.

Compared with the prior art, the invention has the following beneficial effects:

1. the vehicle-mounted wide-temperature-range heat dissipation system provided by the invention can meet the wide-temperature-range heat dissipation requirements of multi-heat-source multi-temperature-target diesel-electric hybrid vehicles.

2. According to the vehicle-mounted wide-temperature-range heat dissipation system, the low-temperature ring radiator adopts a double-inlet and double-outlet water circulation mode, and the cooling requirements of a plurality of heat sources can be met.

3. According to the vehicle-mounted wide-temperature-range heat dissipation system, the refrigerating ring is designed for Freon phase change refrigeration heat exchange, and the temperature of the cooling liquid can reach 20 ℃ in a high-temperature environment of 55 ℃; meanwhile, the loop has the function of switching between conventional cooling and phase change refrigeration, and the heat dissipation requirement of the high-power-density battery pack in different environments is met.

4. According to the vehicle-mounted wide-temperature-range heat dissipation system, the high-low temperature radiator, the refrigeration module, the condenser, the expansion water tank and the cooling fan are integrated into a whole, and integral hoisting can be achieved.

Drawings

Fig. 1 is a schematic diagram of the wide temperature range heat dissipation system of the present invention.

Fig. 2 and 3 are schematic diagrams of wide temperature range vehicle-mounted heat dissipation structures according to the present invention.

Wherein, 1, a high-temperature radiator; 2. a low temperature heat sink; 3. a condenser; 4. a conventional heat sink; 5. a high temperature expansion water tank; 6. a low temperature expansion water tank; 7. a refrigeration expansion tank; 8. a refrigeration module; 9. a fan controller; 10. a water-cooled panel of the fan controller; 11. a support mechanism; 12. a cooling fan; 13. a volute; 14. a low-temperature water pump 1; 15. a low-temperature water pump 2; 16. a refrigeration water pump.

Wherein, the volute casing is used for forming a connecting air channel between the radiator and the fan.

Detailed Description

In order to make the objects, contents, and advantages of the present invention clearer, the following detailed description of the embodiments of the present invention will be made in conjunction with the accompanying drawings and examples.

In order to solve the above technical problem, the present invention provides a wide temperature range vehicle-mounted heat dissipation system for cooling and dissipating heat of a diesel-electric hybrid vehicle, as shown in fig. 1 to 3, the wide temperature range vehicle-mounted heat dissipation system including: the cooling system comprises three cooling liquid circulation loops, namely a high-temperature loop, a low-temperature loop and a refrigerating loop, wherein each loop is used for completing the circulation of cooling liquid by an independent water pump, the cooling liquid of each loop is relatively independent, and the cooling air side shares an electrically driven cooling fan;