CN203126508U - Cooling system and car including same - Google Patents

Abstract

The utility model discloses a cooling system and a car including the cooling system. The cooling system is used in the car, a cooling circuit of the cooling system comprises an expansion valve in the upstream of a cooling water jacket which encloses a device to be cooled and a high-pressure pipe on the upstream of the expansion valve, and an outlet of a condensate water discharging pipe of a car air conditioner is arranged on the high-pressure pipe. Due to the cooling system and the car, energy consumption can be effectively reduced, working time of a power battery also can be effectively prolonged, and the distance per charge of an electrocar can be increased.

Description

Cooling system and automobile including same

technical field

The utility model relates to the technical field of automobile cooling systems; more specifically, the utility model relates to an energy-saving cooling system for automobiles.

Further, the utility model also relates to an automobile comprising the aforementioned cooling system.

Background technique

In the automobiles in the prior art, when the air conditioner in the passenger compartment of the automobile is working, the water vapor in the ambient air is condensed into condensed water with a lower temperature during the evaporation process, and in the current vehicles, the condensed water is The condensed water is directly discharged into the environment, and the condensed water is not fully utilized, resulting in a waste of energy.

More and more automakers are now investing in the development and production of electric vehicles and hybrid vehicles. Both electric vehicles and hybrid vehicles have the advantages of being green and environmentally friendly. However, when the vehicle is running, many subsystems are also consuming battery energy. For example, the electric compressor of the vehicle's cooling system sometimes simultaneously loads the battery cooling system and Automobile passenger compartment air conditioning system, etc. It can be understood that in an electric vehicle, the continuous operation of the battery and powertrain (including the motor and the electrical resistance box) will cause the temperature of these components to rise and cause damage, and the temperature in the passenger compartment of the vehicle is too high, which will affect the occupant's comfort. Seat comfort, so the battery cooling system and air conditioning system are very important subsystems in the car. Because the electric compressor of the cooling system of the electric vehicle consumes additional energy, it also has a certain impact on the cruising range of the electric vehicle.

How to improve the battery life of electric vehicles and hybrid vehicles is a very urgent problem in this field. In reality, increasing the battery capacity and improving the efficiency of electric drive to increase the cruising range is technically difficult, long development cycle, and high cost.

Utility model content

The technical problem to be solved by the utility model is to provide an automobile cooling system capable of saving automobile energy and further provide an automobile including the cooling system.

In order to solve the above technical problems, according to the first aspect of the utility model, a cooling system for automobiles is provided, the cooling circuit of the cooling system includes an expansion valve located upstream of the cooling water jacket of the device to be cooled and an expansion valve located at the The high-pressure pipe upstream of the expansion valve, and the outlet of the condensed water drain pipe of the automobile air conditioner are arranged at the high-pressure pipe.

Optionally, in the aforementioned cooling system, the high-pressure pipe is coated with a water-absorbing material.

Optionally, in the aforementioned cooling system, the water-absorbing material is a water-absorbing sponge.

Optionally, in the aforementioned cooling system, the vehicle is an electric vehicle or a hybrid vehicle.

Optionally, in the aforementioned cooling system, the device to be cooled is a power battery of an automobile.

Optionally, in the aforementioned cooling system, the cooling system shares an electric compressor with the automobile air conditioner, and the electric compressor is powered by the power battery.

Optionally, in the aforementioned cooling system, the cooled device is an assembly composed of a motor and a power resistance box.

According to the second aspect of the present utility model, there is provided an automobile, the automobile is provided with the cooling system as described in any one of the foregoing first aspects.

In the above-mentioned cooling system and automobile, the low-temperature condensed water of the air conditioner is transported to the high-pressure pipe upstream of the expansion valve of the cooling system through the drain pipe, which reduces the temperature of the refrigerant medium in the high-pressure pipe and increases the subcooling degree of the refrigerant medium before the expansion valve. The purpose is to reduce the working pressure of the electric compressor and reduce energy consumption while improving the cooling capacity. In the case of cooling the power battery and/or electric drive powertrain of an electric vehicle or a hybrid vehicle, it can also effectively prolong the working time of the power battery and increase the cruising range of the electric vehicle.

Description of drawings

With reference to the accompanying drawings, the disclosure of the utility model will be more apparent. It should be understood that the drawings of the present utility model are only schematic, not drawn to scale and are not intended to limit the scope of the present utility model. In the picture:

Fig. 1 is a schematic diagram of an embodiment of a cooling system according to the present invention.

Detailed ways

The specific embodiment of the utility model is described in detail below with reference to accompanying drawing.

Fig. 1 is a schematic diagram of an embodiment of a cooling system according to the present invention. In the drawings, reference numeral 10 denotes a cooling system, 11 denotes a cooling circuit, 12 denotes a cooling water jacket, 13 denotes an air conditioner condensate drain pipe, 14 denotes a water-absorbing material, 15 denotes a cooled device, and 16 denotes an expansion valve.

As shown in the figure, the cooling system 10 of this embodiment includes a cooling circuit 11 . The cooling circuit 11 has a cooling water jacket 12 surrounding the device to be cooled 15 , an expansion valve 16 is provided upstream of the cooling water jacket 12 , and a high-pressure pipe coated with a water-absorbing material 14 is located upstream of the expansion valve 16 . It can be understood that the cooling circuit 11 can also have other devices, such as a compressor, a condenser, etc. During the cooling operation, the refrigerant compressed by the compressor condenses at the condenser to lower the temperature, and then expands and cools after the expansion valve, thereby realizing for cooling purposes. When the automobile is a conventional internal combustion locomotive, in an optional embodiment, the cooled device 15 may be any device that needs to be cooled in the automobile, such as an engine, a transmission, and the like.

In order to improve the cooling efficiency and reduce the energy consumed by cooling the cooled device 15, in the illustrated embodiment, the condensed water drain pipe 13 of the automobile air conditioner is set to discharge the condensed water to the high pressure upstream of the expansion valve 16 on the cooling circuit 11. On the pipe, that is, the outlet of the drain pipe 13 is at the high pressure pipe. In this way, the purpose of increasing the subcooling degree of the refrigerant before the expansion valve is achieved, the cooling capacity of the cooling system 10 is improved, and its power consumption requirement is reduced. The condensed water from the condensed water drain pipe 13 drops on the surface of the high-pressure pipe of the cooling circuit, and can exchange heat with the cooling medium in the cooling circuit 11 . The condensed water is generally about 40 degrees lower than the refrigerant medium in the high-pressure pipe of the cooling circuit 11, which can greatly reduce the cooling temperature of the refrigerant medium therein. In a preferred embodiment, in order to advantageously keep the condensed water on the high-pressure pipe for a longer period of time for cooling or heat exchange, a water-absorbing material 14 can be coated on this section, for example, the water-absorbing material 14 can be Absorbent sponge. It is conceivable that since the water-absorbing sponge has a very large number of small pores, the condensed water can penetrate into it without immediately dripping from the high-pressure pipeline of the cooling circuit, which prolongs the time of heat exchange and improves the efficiency. It should be understood that there may be no water-absorbing material or other types of water-absorbing material on this section, and the effects of the present invention may also be achieved to varying degrees.

In electric vehicles or hybrid vehicles, the heating of the power battery will seriously affect the performance of the vehicle and even bring danger to driving, so it is a key device that needs to be cooled on the vehicle. It is conceivable that when the automobile is an electric automobile or a hybrid electric automobile, the device to be cooled mentioned above can be a power battery of the automobile, and like this, it is beneficial to use the condensed water on the high-pressure pipe before the expansion valve of its cooling circuit The temperature of the cooling medium before expansion in the cooling circuit is reduced, which improves the cooling condition of the power battery and saves the power consumption of the power battery for cooling. In an optional embodiment, in order to simplify the structure, the cooling system according to the utility model can also share an electric compressor with the automobile air-conditioning system and the electric compressor can be powered by a power battery, because the utilization of condensed water reduces the cooling power The power consumption required by the battery can also save power. It should be understood that, in the case that the cooling system shares an electric compressor with the automobile air conditioner, they can each have different cooling circuits, that is, they can include respective expansion valves and evaporators, so that the evaporator of the automobile air conditioner The generated low-temperature condensed water can be transported to the front section of the expansion valve upstream of the battery cooling water jacket on the cooling circuit (refrigerant medium pipeline) of the cooling system, so that the low-temperature condensed water can exchange heat with the refrigerating medium in the refrigerating medium pipeline. Further reduce the temperature of the refrigerant medium before expansion. In a preferred embodiment, the aforementioned section where the low-temperature condensed water is transported can be covered with water-absorbing materials such as sponges, and the low-temperature condensed water drops to the sponge-absorbing material and is absorbed by it, so that it can remain on this section for a long time Perform adequate heat exchange.

It can be understood that although the engine, gearbox, power battery, etc. have been described as the cooled device in the foregoing, in an optional embodiment, the cooled device can also be an assembly composed of a motor and a power resistance box, and it is the same as the aforementioned Similarly, the air conditioner condensate can also be passed to the upstream section of the expansion valve of its cooling circuit.

With the above settings, for example, when the air conditioner is in operation in summer, the low-temperature condensed water generated on the surface of the evaporator is discharged through the condensed water drain pipe of the air conditioner, and drops on the high-pressure pipe before the expansion valve of the cooling circuit (refrigerant medium pipe) of the power battery cooling system , the coated sponge absorbent material absorbs low-temperature condensed water to further cool the temperature of the refrigerant medium in the high-pressure pipe. There is a temperature difference of about 40 degrees between the cooling medium in the high-pressure pipe and the low-temperature condensed water, which can achieve the purpose of increasing the subcooling degree of the cooling medium in front of the expansion valve, improve the cooling capacity of the battery, reduce energy consumption, and can effectively improve the performance of electric vehicles or hybrids. The driving range of the powered car.

As mentioned above, the specific implementation of the present utility model has been described in detail with reference to the accompanying drawings, but it should be understood that the application does not intend these specific details to limit the protection scope of the present utility model. Without departing from the spirit and scope of the present utility model, those skilled in the art can make equivalent changes to these structures, and these changed technical solutions will also be included in the protection scope of the present utility model.

Claims (8)

1. cooling system that is used for automobile, it is characterized in that, the cooling loop of described cooling system comprises the expansion valve of the cooling-water chamber upstream that is positioned at the device of waiting to be cooled and is positioned at the high-pressure pipe of described expansion valve upstream that the condensate draining pipe outlet of air conditioning for automobiles is arranged on described high-pressure pipe place.

2. cooling system as claimed in claim 1 wherein, is coated with absorbent material at described high-pressure pipe.

3. cooling system as claimed in claim 2, wherein, described absorbent material is water-absorbing sponge.

4. as each described cooling system in the claim 1 to 3, wherein, described automobile is electronlmobil or hybrid vehicle.

5. cooling system as claimed in claim 4, wherein, device described to be cooled is the electrokinetic cell of automobile.

6. cooling system as claimed in claim 5, wherein, described cooling system and described air conditioning for automobiles share an electric compressor, and described electric compressor is powered by described electrokinetic cell.

7. cooling system as claimed in claim 4, wherein, the described device that is cooled is the assembly that motor and electric power resistance box constitute.

8. an automobile is characterized in that, described automobile is provided with as described above each described cooling system in the claim 1 to 7.

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