CN111509328A

CN111509328A - Integrative device of thermal management and electric motor car charge

Info

Publication number: CN111509328A
Application number: CN202010209941.1A
Authority: CN
Inventors: 秦志东; 周恩飞; 刘凯; 齐孟彬; 魏长河; 齐帅
Original assignee: Beiqi Foton Motor Co Ltd
Current assignee: Beiqi Foton Motor Co Ltd
Priority date: 2020-03-23
Filing date: 2020-03-23
Publication date: 2020-08-07

Abstract

The invention provides a charging and heat management integrated device and an electric vehicle. Wherein, integrative device of thermal management charges includes: a charging unit; the thermal management unit can be connected with an electric vehicle and can exchange heat with a battery of the electric vehicle. The heat management unit comprises a first pipeline, a first cooling device and a first heating device; the first pipeline comprises a first connecting end and a second connecting end, and the first cooling device and the first heating device are arranged in the first pipeline. The technical scheme of the application has solved the problem that the battery life of electric motor car is short among the correlation technique effectively.

Description

Integrative device of thermal management and electric motor car charge

Technical Field

The invention relates to the field of battery thermal management, in particular to a charging and thermal management integrated device and an electric vehicle.

Background

With the vigorous development of the electric vehicle, the service life of the battery of the electric vehicle greatly influences the overall service life of the electric vehicle, and the service life of the battery can be influenced in cold or hot states. The charging process of the electric vehicle is usually carried out outdoors, and the ambient temperature directly prolongs the service life of the battery, so that the heating or cooling of the battery in the charging process is particularly important.

In the related art, a thermal management system of a power battery system heats a power battery by using natural wind or a heating device and energy of a vehicle so as to raise the temperature of the power battery to a temperature region with the best performance of the battery; the heating or cooling by adopting the self energy can reduce the usable electric quantity of the whole vehicle and shorten the driving range of the whole vehicle; the charging speed of the power battery system is reduced in the charging process, the charging time of the battery is prolonged, the temperature management of the power battery system cannot be timely and effectively carried out, the charging and discharging performance of the power battery is influenced, and the dynamic property and the economical efficiency of the whole vehicle are influenced.

Disclosure of Invention

The invention mainly aims to provide a charging and heat management integrated device and an electric vehicle, so as to solve the problem that the service life of a battery of the electric vehicle in the related art is short.

In order to achieve the above object, according to one aspect of the present invention, there is provided a charging thermal management integrated device including: a charging unit; the heat management unit can be connected with the electric vehicle and exchanges heat with a battery of the electric vehicle, and comprises a first pipeline, a first cooling device and a first heating device; the first pipeline comprises a first connecting end and a second connecting end, and the first cooling device and the first heating device are arranged in the first pipeline.

Further, the thermal management unit further comprises a first control valve group, the first control valve group is arranged in the first pipeline, the first control valve group comprises a first switch valve and a second switch valve, and the first cooling device and the first heating device are located between the first switch valve and the second switch valve.

Further, the charging and thermal management integrated device further comprises a first connector arranged at the first connecting end and a second connector arranged at the second connecting end.

Further, the first cooling device includes a first evaporator, and the first heating device includes a first PTC heater.

Further, the first pipeline also comprises a first temperature controller and a first water pump, and the first water pump, the first temperature controller, the first evaporator and the first PTC heater are arranged in series.

According to another aspect of the present invention, there is provided an electric vehicle including a battery pack; the heat management system exchanges heat with the battery pack and comprises a second pipeline, a second cooling device, a second heating device, a second water pump, a water tank and a second control valve group; the second cooling device, the second heating device and the second water pump are arranged in the second pipeline, the second pipeline comprises a circulating pipeline, a first branch and a second branch, the first branch is communicated with the circulating pipeline and is provided with a third connecting end, the second branch is provided with a fourth connecting end, and the second control valve group is arranged in the second pipeline so that the second pipeline has a self-circulation state enabling the circulating pipeline to work and a connection state enabling the second cooling device and the second heating device to be connected with external equipment through the first branch and the second branch.

Further, the circulating pipeline comprises a control pipeline section located between the first branch and the second branch, the second water pump is arranged on the control pipeline section, and the second control valve group comprises a third switch valve arranged on the control pipeline section, a fourth switch valve arranged on the first branch and a fifth switch valve arranged on the second branch.

Further, the water tank is communicated with the second pipeline through a communication pipeline, an exhaust pipe is further arranged on the water tank, one end of the exhaust pipe is communicated with the water tank, and the other end of the exhaust pipe is communicated with the second pipeline.

Further, a third joint is arranged at the third connecting end, and a fourth joint is arranged at the fourth connecting end.

Further, the heat management system further comprises a second temperature controller, the second temperature controller is installed on the second pipeline, the second cooling device comprises a second evaporator, and the second heating device comprises a second PTC heater.

By applying the technical scheme of the invention, the charging and heat management integrated device comprises a charging unit and a heat management unit, wherein the heat management unit comprises a first pipeline, a first cooling device and a first heating device. The first pipeline comprises a first connecting end and a second connecting end, and the first cooling device and the first heating device are arranged in the first pipeline and located between the first connecting end and the second connecting end. When the charging and heat management integrated device charges the electric vehicle through the charging unit, the heat management unit of the charging and heat management integrated device can be connected with the electric vehicle and exchanges heat with the battery of the electric vehicle, and the medium in the first pipeline can effectively perform heat management on the battery of the electric vehicle, so that the rechargeable battery is protected, the rechargeable battery is in the best state, and the service life of the battery is prolonged.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic connection diagram of an embodiment of a charging and thermal management integrated device according to the present invention and a thermal management system of an embodiment of an electric vehicle;

FIG. 2 shows a schematic structural diagram of the integrated charging and thermal management device of FIG. 1; and

FIG. 3 illustrates a schematic diagram of a thermal management system of the electric vehicle of FIG. 1.

Wherein the figures include the following reference numerals:

10. a first pipeline; 11. a first joint; 12. a second joint; 13. a first temperature controller; 14. a first water pump; 20. a first cooling device; 30. a first heating device; 40. a first control valve group; 41. a first on-off valve; 42. a second on-off valve; 50. a second cooling device; 60. a second heating device; 70. a second pipeline; 711. a first branch; 712. a second branch circuit; 713. a third joint; 714. a fourth joint; 72. a third on-off valve; 73. a fourth switching valve; 74. a fifth on-off valve; 75. a second temperature controller; 80. a second water pump; 90. a water tank; 91. an exhaust pipe; 100. a battery pack.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates 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 unless specifically stated otherwise. 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. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. 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.

As shown in fig. 1 and 2, the charging and thermal management integrated device of the present embodiment includes: a charging unit and a thermal management unit. The thermal management unit comprises a first pipeline 10, a first cooling device 20 and a first heating device 30; wherein the first pipeline 10 comprises a first connection end and a second connection end, and the first cooling device 20 and the first heating device 30 are arranged in the first pipeline 10.

By applying the technical scheme of the embodiment, the charging and thermal management integrated device comprises a charging unit and a thermal management unit, wherein the thermal management unit comprises a first pipeline 10, a first cooling device 20 and a first heating device 30. The first pipeline 10 comprises a first connection end and a second connection end, and the first cooling device 20 and the first heating device 30 are arranged in the first pipeline 10 and between the first connection end and the second connection end. When the charging and heat management integrated device charges the electric vehicle through the charging unit, the heat management unit of the charging and heat management integrated device can be connected with the electric vehicle and exchanges heat with the battery of the electric vehicle, and the medium in the first pipeline 10 can effectively perform heat management on the battery of the electric vehicle, so that the rechargeable battery is protected, the rechargeable battery is in the best state, and the service life of the battery is prolonged.

As shown in fig. 2, in the present embodiment, the thermal management unit further includes a first valve group 40, the first valve group 40 is disposed in the first pipeline 10, the first valve group 40 includes a first on-off valve 41 and a second on-off valve 42, and the first cooling device 20 and the first heating device 30 are located between the first on-off valve 41 and the second on-off valve 42. The first switch valve 41 and the second switch valve 42 can effectively control the on-off of the first pipeline 10, and therefore control the starting and closing of the thermal management unit. Meanwhile, the first and

second switching valves

41 and 42 are provided so that the liquid in the first pipeline 10 does not flow out.

As shown in fig. 2, in the present embodiment, the charging and thermal management integrated device further includes a first connector 11 disposed at the first connection end and a second connector 12 disposed at the second connection end. The first connector 11 and the second connector 12 can be connected to an external connector, and when the charging and heat management integrated device is charged, the heat management unit can heat or cool the charged and heat management integrated device, so that the charged device is protected and charged in an optimal state, and the service life of the charged device can be prolonged.

As shown in fig. 2, in the present embodiment, the first cooling device 20 includes a first evaporator, and the first heating device 30 includes a first PTC heater. The cooling effect of first evaporimeter is better, can carry out quick cooling to the medium in the pipeline. The first PTC heater is capable of heating the medium in the conduit. The first evaporator and the first PTC heater are used for carrying out heat management on the charged device, and the power of the charging and heat management integrated device is utilized, so that the heat management efficiency can be effectively improved.

As shown in fig. 2, in this embodiment, the first pipeline 10 further includes a first temperature controller 13 and a first water pump 14, and the first water pump 14, the first temperature controller 13, the first evaporator and the first PTC heater are connected in series. The first temperature controller 13 can effectively monitor the temperature of the medium in the first pipeline 10 and the change of the temperature, and can timely adjust the working state of the thermal management unit according to the temperature. The first water pump plays a role in conveying media in the pipeline. The first water pump 14, the first temperature controller 13, the first evaporator and the first PTC heater are connected in series, so that the medium in the first pipeline 10 can be effectively heated or cooled.

In an embodiment not shown in the drawings, the first water pump may not be arranged in the first pipeline, and the medium can be conveyed by the water pump in the charged equipment.

As shown in fig. 1 and 3, the electric vehicle of the present embodiment includes: battery pack 100 and a thermal management system. The heat management system exchanges heat with the battery pack 100 and comprises a second pipeline 70, a second cooling device 50, a second heating device 60, a second water pump 80, a water tank 90 and a second control valve group; the second cooling device 50, the second heating device and the second water pump 80 are arranged in the second pipeline 70, the second pipeline 70 comprises a circulating pipeline, a first branch 711 and a second branch 712 which are communicated with the circulating pipeline, the first branch 711 is provided with a third connecting end, the second branch 712 is provided with a fourth connecting end, and the second control valve group is arranged in the second pipeline 70, so that the second pipeline 70 has a self-circulation state enabling the circulating pipeline to work and a connection state enabling the second cooling device 50 and the second heating device 60 to be connected with external equipment through the first branch and the second branch. Preferably, a portion of the second pipe is wound outside the battery pack 100 to heat or cool the battery pack 100.

The electric vehicle itself has a thermal management system that can heat or cool the battery pack 100. The thermal management system comprises a second cooling device 50, a second heating device 60, a second pipeline 70, a second water pump 80, a water tank 90 and a second control valve group. The second cooling device 50, the second heating device 60, the second water pump 80, and the water tank 90 are disposed in the second pipe 70. The circulation pipeline and the arrangement of the first branch 711 and the second branch 712 enable the thermal management system of the electric vehicle to have a self-circulation state and an external connection state. Through the self-circulation state and the external connection state, the electric vehicle can be externally connected for heat management when being charged, the energy of the vehicle is not consumed, and the self consumption of the battery pack 100 is greatly reduced. When the external thermal management is carried out, not only can the group battery carry out the thermal management simultaneously according to the inside structural design of vehicle, can heat or cool down the cockpit.

Through external thermal management, the temperature of the battery pack 100 can be increased to or reduced to an optimal charging temperature area, the charging and discharging performance of the battery pack 100 is improved, the dynamic property and the economical efficiency of the electric vehicle are improved, the service life of the battery pack 100 is prolonged, and serious accidents such as thermal runaway of the battery pack 100 are avoided.

And when the charging and heat management integrated device is connected with the electric vehicle for use, the heat management unit of the charging and heat management integrated device is communicated with the heat management system of the electric vehicle, so that the heat management unit of the charging and heat management integrated device can perform heat management on the electric vehicle, the electric vehicle can be effectively prevented from being charged and needing to use the electric quantity of the electric vehicle to perform heat management on the whole vehicle, the burden of energy consumption of the battery pack 100 is increased, and the performance of the whole vehicle is poor.

As shown in fig. 3, the circulation line in this embodiment includes a control line section between a first branch 711 and a second branch 712, the second water pump 80 is disposed on the control line section, and the second control valve group includes a third switching valve 72 disposed on the control line section, a fourth switching valve 73 disposed on the first branch 711, and a fifth switching valve 74 disposed on the second branch 712. The third on-off valve 72 is close to the second water pump 80, the second water pump 80 can be controlled while the third on-off valve is opened and closed, and the second water pump 80 is started when the third on-off valve is in an open position. When the third switching valve is in the closed position, the second water pump 80 does not work, and the fourth switching valve 73 and the fifth switching valve 74 respectively control the first branch 711 and the second branch 712 to be in the connected state or the disconnected state, so that the external thermal management unit is protected, and the medium in the second pipeline 70 is prevented from flowing out through the first branch 711 and/or the second branch 712.

In the present embodiment, when the third switching valve 72 is in the open state and the fourth switching valve 73 and the fifth switching valve 74 are in the closed state, the electric vehicle performs thermal management of self-circulation, which is suitable for use after the vehicle is started. When the third switching valve 72 is in a closed state, the fourth switching valve 73 and the fifth switching valve 74 are in an open state, and the electric vehicle performs external thermal management. This applies when parking. When the vehicle is placed outdoors, the battery pack and the cab of the electric vehicle are effectively subjected to heat management by utilizing external heat management, so that the service life of the battery can be greatly prolonged, and meanwhile, people about to enter the cab have a comfortable riding environment.

As shown in fig. 3, in the present embodiment, the water tank 90 is connected in parallel with the second pipeline 70, an exhaust pipe 91 is further provided on the water tank 90, one end of the exhaust pipe 91 is communicated with the water tank 90, and the other end of the exhaust pipe 91 is communicated with the second pipeline 70. The water tank 90 can supplement the medium for the second pipeline 70, and prevent the medium in the second pipeline 70 from leaking to influence the heat management effect. The gas exhaust pipe 91 can exhaust the gas in the second pipe 70 so that the second pipe 70 is filled with the liquid medium.

As shown in fig. 3, a third joint 713 is provided at the third connecting end and a fourth joint 714 is provided at the fourth connecting end in the present embodiment. The third joint 713 can be communicated with the first joint 11, and the fourth joint 714 can be communicated with the second joint 12, so that the thermal management system of the electric vehicle is in an external thermal management state through the communication.

As shown in fig. 3, in this embodiment, the heat management system further includes a second temperature controller 75, the second temperature controller 75 is installed on the second pipeline 70, the second cooling device 50 includes a second evaporator, and the second heating device 60 includes a second PTC heater. The second temperature controller 75 can monitor the temperature of the medium in the second pipeline 70, and then adjust the state of the thermal management in time.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A charging and thermal management integrated device, comprising:

a charging unit;

a thermal management unit connectable to an electric vehicle and in heat exchange with a battery of the electric vehicle, the thermal management unit comprising a first pipeline (10), a first cooling device (20) and a first heating device (30);

wherein the first pipeline (10) comprises a first connection end and a second connection end, the first cooling device (20) and the first heating device (30) being arranged in the first pipeline (10).

2. The integrated charging and thermal management device according to claim 1, characterized in that the thermal management unit further comprises a first set of control valves (40), the first set of control valves (40) being arranged in the first piping (10), the first set of control valves (40) comprising a first on-off valve (41) and a second on-off valve (42), the first cooling device (20) and the first heating device (30) being located between the first on-off valve (41) and the second on-off valve (42).

3. The charging and thermal management integrated device according to claim 1, further comprising a first connector (11) disposed at the first connection end and a second connector (12) disposed at the second connection end.

4. The integrated charging and thermal management device according to claim 1, wherein the first cooling device (20) comprises a first evaporator and the first heating device (30) comprises a first PTC heater.

5. The integrated charging and thermal management device according to claim 4, wherein the first pipeline (10) further comprises a first temperature controller (13) and a first water pump (14), and the first water pump (14), the first temperature controller (13), the first evaporator and the first PTC heater are arranged in series.

6. An electric vehicle, characterized in that it comprises

A battery pack (100);

the heat management system exchanges heat with the battery pack (100) and comprises a second pipeline (70), a second cooling device (50), a second heating device (60), a second water pump (80), a water tank (90) and a second control valve group;

wherein the second cooling device (50), the second heating device, and the second water pump (80) are disposed in the second pipeline (70), the second pipeline (70) includes a circulation pipeline, and a first branch (711) and a second branch (712) communicated with the circulation pipeline, the first branch (711) has a third connection end, the second branch (712) has a fourth connection end, and the second control valve set is disposed in the second pipeline (70) so that the second pipeline (70) has a self-circulation state in which the circulation pipeline operates, and a connection state in which the second cooling device (50) and the second heating device (60) are connected to an external device through the first branch and the second branch.

7. An electric vehicle according to claim 6, characterized in that the circulation circuit comprises a control circuit section between the first branch and the second branch, on which control circuit section the second water pump (80) is arranged, and that the second control valve group comprises a third on-off valve (72) arranged on the control circuit section, a fourth on-off valve (73) arranged on the first branch (711), and a fifth on-off valve (74) arranged on the second branch (712).

8. The electric vehicle of claim 6, wherein the water tank (90) is communicated with the second pipeline (70) through a communication pipeline, an exhaust pipe (91) is further arranged on the water tank (90), one end of the exhaust pipe (91) is communicated with the water tank (90), and the other end of the exhaust pipe (91) is communicated with the second pipeline (70).

9. An electric vehicle according to claim 6, characterized in that a third joint (713) is provided at the third connection end and a fourth joint (714) is provided at the fourth connection end.

10. An electric vehicle according to claim 6, characterized in that the thermal management system further comprises a second thermostat (75), the second thermostat (75) being mounted on the second pipe (70), the second cooling device (50) comprising a second evaporator, and the second heating device (60) comprising a second PTC heater.