CN218558496U

CN218558496U - Automobile water cooling unit and whole automobile heat management system

Info

Publication number: CN218558496U
Application number: CN202221957243.0U
Authority: CN
Inventors: 赵春平; 郝义国; 张江龙
Original assignee: Wuhan Grove Hydrogen Energy Automobile Co Ltd
Current assignee: Wuhan Grove Hydrogen Energy Automobile Co Ltd
Priority date: 2022-07-27
Filing date: 2022-07-27
Publication date: 2023-03-03
Anticipated expiration: 2032-07-27

Abstract

The utility model provides an automobile water-cooling unit and whole car thermal management system, this automobile water-cooling unit includes the box, and sets up three channel heat exchanger, refrigerant circuit and refrigerant output pipeline in the box, wherein, three channel heat exchanger has refrigerant passageway, first coolant liquid passageway and second coolant liquid passageway are used for connecting two heat transfer systems respectively; the refrigerant loop comprises a compressor, a condenser and a refrigerant channel which are sequentially connected through pipelines; the refrigerant output pipeline is connected with the condenser and is used for connecting the evaporator to form a loop; the refrigerant flowing out of the condenser selectively flows to the refrigerant passage and/or the evaporator. The utility model has the advantages that: the cooling/heating function of the power battery and the member cabin on the whole vehicle is realized; when the vehicle runs at low temperature, waste heat of the heat exchange system is introduced to heat and preserve heat of the battery pack and the passenger compartment, so that energy consumption is reduced, and the endurance of the whole vehicle is improved.

Description

Automobile water cooling unit and whole automobile heat management system

Technical Field

The utility model relates to a car thermal management technical field especially relates to a car water chilling unit and whole car thermal management system.

Background

In the existing new energy vehicles (pure electric/hydrogen fuel cells), auxiliary power cells are thermally managed in a water cooling and PTC/membrane heating mode; wherein the water-cooling has 2 kinds of realization modes again: (1) an independent water cooling unit; (2) cooling the battery pack by heat exchange of a refrigerant of an air conditioning system; the independent water cooling unit is adopted for cooling the battery pack, and the member cabin is also provided with an independent air conditioning system, so that the whole vehicle has two sets of same parts, occupies the arrangement space of the whole vehicle, and increases the cost and the weight of the whole vehicle; heating is also achieved in 3 ways: (1) the independent water cooling unit is provided with a PTC (positive temperature coefficient); (2) the water path in the battery pack is provided with a PTC; (3) the battery pack adopts an internal electric heating film to heat the battery; the three heating modes all consume electric energy at different degrees, so that the energy utilization efficiency of the battery is influenced, and the endurance mileage of the whole vehicle is further influenced.

SUMMERY OF THE UTILITY MODEL

In view of this, in order to solve new energy automobile's battery thermal management problem, the embodiment of the utility model provides an automobile water cooling unit and whole car thermal management system.

The embodiment of the utility model provides an automobile water cooling unit, which comprises a box body, a three-channel heat exchanger, a refrigerant loop and a refrigerant output pipeline which are arranged in the box body, wherein,

the three-channel heat exchanger is provided with a refrigerant channel, a first cooling liquid channel and a second cooling liquid channel, and the first cooling liquid channel and the second cooling liquid channel are respectively connected with a heat exchange system;

the refrigerant loop comprises a compressor, a condenser and the refrigerant channel which are sequentially connected through pipelines;

the refrigerant output pipeline is connected with the condenser and is used for connecting the evaporator to form a loop;

refrigerant flowing from the condenser selectively flows to the refrigerant channels and/or the evaporator.

Further, a valve is arranged on the refrigerant loop; and/or a valve is arranged on the refrigerant output pipeline; and/or two ports of the first cooling liquid channel and two ports of the second cooling liquid channel penetrate out of the box body.

Further, the condenser also comprises a first fan which is arranged on one side of the condenser.

Furthermore, the fan is installed on the side wall of the box body, and heat dissipation holes are formed in other side walls of the box body where the fan is not installed.

In addition, the embodiment of the utility model also provides a whole vehicle heat management system, which comprises the vehicle water cooling unit and also comprises,

a battery pack connected to the first coolant channel through a pipe to form a first coolant circuit;

a heat source connected to the second coolant passage through a pipe to form a second coolant circuit;

a heat source radiator connected to the heat source through a pipe to form a third coolant circuit;

the coolant flowing from the heat source is selectively flowed to the second coolant channel and/or the heat source radiator.

Further, the heat source radiator is a fuel cell radiator, an engine radiator or an electric drive electric control radiator; and/or the heat source radiator is connected with the heat source in series after being connected in parallel, and cooling liquid flowing out of the heat source selectively flows to the through pipeline and/or the heat source radiator through the thermostat.

The air conditioner box assembly comprises a warm air core body, the warm air core body is connected with the second cooling liquid channel and the heat source radiator in parallel and then connected with the heat source in series, and cooling liquid flowing out of the heat source selectively flows to one or more of the warm air core body, the second cooling liquid channel and the heat source radiator.

Further, the evaporator is an evaporator of an air conditioning box assembly, and the evaporator is connected with the refrigerant output pipeline to form a loop.

Further, a first water pump is arranged on the first cooling liquid loop; and/or a second water pump is arranged on the second cooling liquid loop.

Further, the cooling system also comprises a first cooling liquid filling pipeline which is connected with the first cooling liquid loop; and/or a second cooling liquid filling pipeline which is connected with the second cooling liquid loop.

The embodiment of the utility model provides a beneficial effect that technical scheme brought is:

1. the utility model discloses a car water-cooling unit and whole car heat management system, water-cooling unit refrigerate condenser and compressor through the three channel heat exchanger, can carry out the heat transfer with other two heat transfer systems, realize the function of the cooling/heating to power battery and member cabin on the whole car; the whole vehicle heat management system can simultaneously provide the cooling capacity required by the battery pack and the passengers through the water cooling unit according to the working condition requirement of the vehicle; the refrigeration requirement is met, and the refrigeration effect is balanced; the system has the advantages that the waste heat of the fuel cell system is introduced to heat the battery pack and the passenger compartment in a low-temperature environment and keep the temperature of the battery pack and the passenger compartment simultaneously on the basis of a scheme of independently using the water cooling unit, and compared with the current power consumption heating heat management scheme of a new energy automobile, the system can reduce energy consumption and improve the endurance of the whole automobile.

2. The water cooling unit has high integration and convenient installation, and the internal components of the water cooling unit can be produced and installed before loading, so the assembly efficiency of the whole vehicle is effectively improved; more excellent, thereby having improved condenser heat dispersion through the installation fan and having ensured its working property, set up the louvre simultaneously in other positions of box, effectively avoided because of the heat exchange efficiency when condenser and tee bend heat exchanger are integrated together, louvre and fan whether the fan operation can both play fine convection current phenomenon at the in-process to have had good heat transfer performance when having guaranteed that the water chilling unit highly integrates.

Drawings

FIG. 1 is a schematic diagram of a vehicle thermal management system of the present invention;

fig. 2 is a first schematic diagram of a water chiller according to the present invention;

fig. 3 is a schematic diagram of a water chiller according to the present invention.

In the figure: the system comprises a 1-three-channel heat exchanger, a 2-condenser, a 3-compressor, a 4-first electronic expansion valve, a 5-first fan, a 6-refrigerant circuit, a 7-second electronic expansion valve, an 8-refrigerant output pipeline, a 9-evaporator, a 10-battery pack, a 11-first cooling liquid circuit, a 12-first water pump, a 13-heat source radiator, a 14-heat source, a 15-second fan, a 16-second water pump, a 17-second cooling liquid circuit, an 18-electronic thermostat, a 19-warm air core body, a 20/21-three-way valve, a 22-second cooling liquid filling pipeline, a 23-first cooling liquid filling pipeline, a 24/25-water tank, a 26-three-way valve, a 27-box body, a 28-first cooling liquid channel port, a 29-second cooling liquid channel port, a 30-third fan, a 31-third cooling liquid circuit and a 32-straight-through pipeline.

Detailed Description

To make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be further described with reference to the accompanying drawings. The following description is of the preferred embodiment of the invention in its various possible embodiments and is intended to provide a basic understanding of the invention and not to identify key or critical elements of the invention or to delineate the scope of the invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

It should be noted that: unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention.

Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting.

Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

Referring to fig. 1, 2 and 3, an embodiment of the present invention provides an automobile water cooling unit, which includes a box 27, and a three-channel heat exchanger 1, a refrigerant loop 6 and a refrigerant output pipeline 8 which are arranged in the box 27.

As shown in fig. 1, the three-channel heat exchanger 1 has three fluid channels, specifically, a refrigerant channel, a first coolant channel, and a second coolant channel. The refrigerant channel is used for flowing refrigerant, the first cooling liquid channel and the second cooling liquid channel are used for flowing cooling liquid, and the refrigerant and the cooling liquid in different fluid channels exchange heat. Preferably, the three-channel heat exchanger 1 is a three-channel plate heat exchanger. Of course, in other embodiments of the present invention, the three-channel heat exchanger 1 may also be a tube type heat exchanger.

The refrigerant circuit 6 includes a compressor 3, a condenser 2 and the refrigerant passage connected in this order by a pipe. One side of condenser 2 still is equipped with first fan 5, through first fan 5 promotes the condensation effect of condenser 2, also promotes this car water-cooling unit's refrigeration effect promptly. Moreover, a valve is disposed on the refrigerant circuit 6, and in this embodiment, a first electronic expansion valve 4 is disposed on the refrigerant circuit 6, and the first electronic expansion valve 4 controls the opening and closing of the refrigerant circuit 6. Preferably, the first fan 5 is installed on a sidewall of the box 27, and the box 27 and other sidewalls where the first fan 5 is not installed are provided with heat dissipation holes, the heat dissipation holes and the first fan 5 can form a good convection effect, in practical applications, the blowing wind direction of the first fan 5 is preferably blown from the inside of the box 27 to the outside of the box 27, the air flowing through the heat dissipation holes preferably passes through the three-channel heat exchanger 1 first and then flows through the condenser 2 and then flows through the first fan 5 under the action of the first fan 5, and is finally discharged, thereby accelerating air convection, and the multi-stage gradient utilization of cold energy is possible: when the temperature of the air is lower than that of the three-channel heat exchanger 1, the three-channel heat exchanger 1 can be initially cooled, and then the condenser 2 is cooled; when the air temperature is higher than that of the three-channel heat exchanger 1, the air is primarily cooled when flowing through the three-channel heat exchanger 1, and then the condenser 2 is cooled. It is further preferred that the three-channel heat exchanger 1 is arranged as far away as possible from the condenser 2, in particular for the coolant channel for connection to a refrigeration requirement system, such as a battery pack 10, which requires cooling by means of the condenser 2.

The refrigerant output pipeline 8 is connected with the condenser 2 and is used for connecting an evaporator 9 outside the automobile water cooling unit, such as the evaporator 9 connected with an air conditioning box assembly. When the refrigerant flows through the evaporator 9, the refrigerant evaporates and absorbs heat, and the refrigeration function of the air conditioning box assembly is realized. Moreover, a valve is disposed on the refrigerant output pipeline 8, in this embodiment, a second electronic expansion valve 7 is disposed on the refrigerant output pipeline 8, and the second electronic expansion valve 7 controls the opening and closing of the refrigerant output pipeline 8.

The first cooling liquid channel and the second cooling liquid channel are used for being connected with different heat exchange systems respectively. As shown in fig. 2 and 3, in this embodiment, the compressor 3 and the condenser 2 are installed in the box 27, two ports 28 of the first cooling liquid channel and two ports 29 of the second cooling liquid channel both penetrate through the box 27, the two ports 28 of the first cooling liquid channel are located on one side of the box 27, and the two ports 29 of the second cooling liquid channel are located on the other side of the box 27, so that the first cooling liquid channel and the second cooling liquid channel are conveniently connected to a heat exchange system.

In addition, as shown in fig. 1, based on above-mentioned car water chilling unit, the embodiment of the utility model also provides a whole car thermal management system, including foretell car water chilling unit, and still include battery package 10, heat source 14 and heat source radiator 13.

The battery pack 10 is connected to the first coolant passage through a pipe to form a first coolant circuit 11. As shown in fig. 1, a first water pump 12 is disposed on the first cooling liquid loop 11, and the first water pump 12 is an electronic water pump. The coolant is pumped by the first water pump 12 and circulates in the first coolant circuit 11 to exchange heat with the fluid in the refrigerant channel and/or the second coolant channel.

Specifically, the heat source 14 is connected to the second cooling liquid channel by a pipe to form a second cooling liquid circuit 17. The heat source radiator 13 is connected to the heat source 14 by a pipe to form a third coolant circuit 31. The coolant flowing from the heat source 14 is selectively flowed to the second coolant passage and/or the heat source radiator 13. As shown in fig. 1, a second water pump 16 is provided on the second coolant circuit 17, and the second water pump 16 is an electric water pump.

A through pipeline 32 is further arranged between the heat source 14 and the heat source radiator 13, the through pipeline 32 is connected with the second cooling liquid loop 17 and the third cooling liquid loop 31 through an electronic thermostat 18, so as to be connected with the heat source radiator 14 in parallel and then connected with the heat source 13 in series, and the cooling liquid from the heat source 13 selectively flows to the through pipeline 32 and/or the heat source radiator 13 through the electronic thermostat 18.

A second fan 15 is further provided at one side of the heat source radiator 13. The coolant is pumped by the second water pump 16 and circulates in the second coolant circuit 17 to exchange heat with the fluid in the refrigerant passage and/or the first coolant passage.

This whole car thermal management system still includes air conditioning cabinet assembly, air conditioning cabinet assembly include evaporimeter 9 and set up in the warm braw core 19 of evaporimeter 9 one side and set up in the third fan 30 of warm braw core 19 one side, wherein evaporimeter 9 connects refrigerant output pipeline 8 and forms the return circuit. Both ends of the warm air core 19 are connected to the second coolant circuit 17 through two-three

way valves

20 and 21, respectively, to be connected in parallel with the heat source 14 and the heat source radiator 13, and the coolant flowing out from the heat source 14 selectively flows to one or more of the warm air core 19, the second coolant channel, and the heat source radiator 13.

In addition, in order to fill and exhaust the first coolant circuit 11 and the second coolant circuit 17 before use, the overall vehicle thermal management system further comprises a first coolant filling pipeline 23 and a second coolant filling pipeline 22. Wherein one end of the first cooling liquid filling pipeline 23 is connected with a water tank 25, and the other end is connected with the first cooling liquid loop 11 through a tee joint 26. One end of the second cooling liquid filling pipeline 24 is connected with the other water tank 24, and the other end of the second cooling liquid filling pipeline is connected with the second cooling liquid loop 17.

The vehicle thermal management system can intensively refrigerate the battery pack 10 and the passenger compartment of the vehicle. Specifically, the method comprises the following steps: opening the first electronic expansion valve 4 and the second electronic expansion valve 7, and adjusting the two three-

way valves

20 and 21 so that the coolant in the second coolant circuit 17 flows through the warm air core 19 and does not flow through the heat source 14, and the coolant in the third coolant circuit 31 does not flow through the heat source radiator 13; through the refrigeration of the condenser 2, when the refrigerant flows through the refrigerant channel, the refrigerant exchanges heat with the cooling liquid in the first cooling liquid loop 11, the battery pack 10 is cooled, and when the refrigerant flows through the evaporator 9, the refrigerant exchanges heat with the cooling liquid in the second cooling liquid loop 17, so that the air conditioning box assembly realizes refrigeration, and the refrigeration of the passenger compartment of the automobile is realized. The two three-

way valves

20 and 21 are adjusted to enable the cooling liquid in the second cooling liquid loop 17 to flow through the heat source 14 and not flow through the warm air core 19, and the cooling liquid in the third cooling liquid loop 31 flows through the heat source radiator 13, so that the cooling liquid in the second cooling liquid loop 17 exchanges heat with the cooling liquid in the second cooling liquid loop 17 when the cooling liquid flows through the refrigerant channel, and the heat source 14 is cooled.

The on-off or specific flow of the two loops of the refrigerant loop 6 and the refrigerant output pipeline 8 can be respectively controlled by adjusting the first electronic expansion valve 4 and the second electronic expansion valve 7, so that the refrigeration requirement is met, and the refrigeration effect is balanced.

The vehicle thermal management system can utilize the waste heat of the heat source 14. Specifically, the method comprises the following steps: the water chiller is shut down and the two three-

way valves

20, 21 are adjusted so that the coolant in the second coolant loop 17 flows through the warm air core 19 and/or through the heat source 14 and/or the coolant in the third coolant loop 31 flows through the heat source radiator 13. In this way, the cooling liquid in the second cooling liquid loop 17 and the third cooling liquid loop 31 absorbs the heat generated by the heat source 14 during operation, and when the cooling liquid flows through the warm air core 19, the air conditioning box assembly is heated, so that the passenger compartment of the automobile is heated; when the cooling liquid in the second cooling liquid loop 17 and the third cooling liquid loop 31 flows through the second cooling liquid channel, heat exchange is performed with the cooling liquid in the first cooling liquid channel, and the cooling liquid in the first cooling liquid loop 11 absorbs heat and heats the battery pack 10, so that heat preservation is realized.

It should be noted that the overall thermal management system can be applied to different automobiles, and the heat source 14 and the heat source radiator 13 can be selected differently according to different corresponding objects, including but not limited to the following embodiments.

In some embodiments, when the vehicle thermal management system is applied to a hydrogen energy vehicle, the heat source is a fuel cell, and the heat source radiator is a fuel cell radiator.

In some embodiments, when the entire vehicle thermal management system is applied to a hybrid vehicle, the heat source is an engine, such as a fuel engine, a gas engine, a hydrogen engine or a methanol engine, and the heat source radiator is an engine radiator.

In some embodiments, when the entire vehicle thermal management system is applied to a pure electric vehicle, the heat source is an electrically-driven electronic control system, and the heat source radiator is an electrically-driven electronic control radiator.

In this document, the terms front, back, upper and lower are used to define the components in the drawings and the positions of the components relative to each other, and are used for clarity and convenience of the technical solution. It is to be understood that they are relative concepts that may be modified in various manners of use and placement and that the use of directional terms should not be taken to limit the scope of what is claimed.

The features of the embodiments and embodiments described herein above may be combined with each other without conflict.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. An automobile water cooling unit is characterized by comprising a box body, a three-channel heat exchanger, a refrigerant loop and a refrigerant output pipeline which are arranged in the box body, wherein,

2. The automotive water chiller as set forth in claim 1 wherein: a valve is arranged on the refrigerant loop; and/or a valve is arranged on the refrigerant output pipeline; and/or two ports of the first cooling liquid channel and two ports of the second cooling liquid channel penetrate out of the box body.

3. The automobile water chiller as set forth in claim 1 or 2 wherein: the condenser also comprises a first fan which is arranged on one side of the condenser.

4. The automotive water chiller unit of claim 3 wherein: the fan is installed in the lateral wall of box, the other lateral walls that the box was not installed the fan are equipped with the louvre.

5. The utility model provides a whole car thermal management system which characterized in that: comprising the water chiller according to any one of claims 1-4 and further comprising,

the coolant flowing from the heat source is selectively flowed to the second coolant passage and/or the heat source radiator.

6. The finished vehicle thermal management system of claim 5, wherein: the heat source radiator is a fuel cell radiator, an engine radiator or an electric drive electric control radiator; and/or the heat source radiator is connected with the heat source in series after being connected in parallel, and cooling liquid flowing out of the heat source selectively flows to the through pipeline and/or the heat source radiator through the thermostat.

7. The finished vehicle thermal management system of claim 5, wherein: the air conditioning cabinet assembly comprises a warm air core, the warm air core is connected with the second cooling liquid channel and the heat source radiator in parallel and then connected with the heat source in series, and cooling liquid flowing out of the heat source selectively flows to one or more of the warm air core, the second cooling liquid channel and the heat source radiator.

8. The vehicle thermal management system according to any one of claims 5-7, wherein: the evaporator is an evaporator of an air conditioner box assembly and is connected with the refrigerant output pipeline to form a loop.

9. The vehicle thermal management system according to any one of claims 5-7, wherein: a first water pump is arranged on the first cooling liquid loop; and/or a second water pump is arranged on the second cooling liquid loop.

10. The vehicle thermal management system of any one of claims 5 to 7, wherein: the first cooling liquid filling pipeline is connected with the first cooling liquid loop; and/or a second cooling liquid filling pipeline which is connected with the second cooling liquid loop.