CN212587569U - Thermal management system and vehicle - Google Patents
Thermal management system and vehicle Download PDFInfo
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- CN212587569U CN212587569U CN202020963176.8U CN202020963176U CN212587569U CN 212587569 U CN212587569 U CN 212587569U CN 202020963176 U CN202020963176 U CN 202020963176U CN 212587569 U CN212587569 U CN 212587569U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model discloses a thermal management system and vehicle. The heat management system comprises a driving device, a battery pack, an electrical component and a cooling device, wherein the driving device, the battery pack, the electrical component and the cooling device are connected in series through cooling pipelines, the driving device drives a coolant to flow through the battery pack and the electrical component in sequence after being cooled by the cooling device so as to dissipate heat of the battery pack and the electrical component, and the coolant is a mixture of solid-liquid phase change microcapsules and a cooling liquid. According to the utility model discloses a thermal management system has utilized solid-liquid phase to become refrigerated principle, and one set of cooling system can be shared to group battery and electrical components, and the coolant both has cooled down the group battery, can cool down electrical components again, has practiced thrift energy, cost and space.
Description
Technical Field
The utility model relates to a heat management technical field particularly relates to a heat management system and vehicle.
Background
Under the condition that the temperature of a battery is required to be kept at room temperature in a high-temperature environment, the heat of the conventional battery thermal management system cannot be transferred to the air, so that the requirement of battery thermal management cannot be met
Accordingly, there is a need to provide a thermal management system and vehicle to at least partially address the above-mentioned problems.
SUMMERY OF THE UTILITY MODEL
In the summary section a series of concepts in a simplified form is introduced, which will be described in further detail in the detailed description section. The inventive content does not imply any attempt to define the essential features and essential features of the claimed solution, nor is it implied to be intended to define the scope of the claimed solution.
In order to at least partially solve the above problem, according to a first aspect of the present invention, there is provided a thermal management system, the thermal management system includes a driving device, a battery pack, an electrical component and a cooling device, the driving device, the battery pack, the electrical component and the cooling device are connected in series through a cooling pipeline, the driving device drives a coolant to flow through the battery pack and the electrical component in sequence after being cooled by the cooling device so as to dissipate heat of the battery pack and the electrical component, and the coolant is a mixture of solid-liquid phase change microcapsules and a coolant.
According to the utility model discloses a thermal management system, through setting up the coolant into the mixture of solid-liquid phase change microcapsule and coolant liquid, then under the high temperature condition, when the coolant stream was through the group battery, can become the heat by solid-liquid phase change microcapsule absorption heat, some microcapsules become liquid by solid-state, and the temperature can not change, then after getting into electrical apparatus parts such as motor and automatically controlled, absorb the heat again and become liquid by solid-state with remaining microcapsule is whole, later the coolant stream flows into cooling device and dispels the heat, the microcapsule becomes solid-state by liquid again to can make the group battery keep the purpose of constant temperature work. And the thermal management system not only cools the battery pack, but also can cool electrical components, so that the energy, the cost and the space are saved.
Optionally, the battery pack includes a battery container and battery cells, the cooling pipeline flowing through the battery pack includes a unit pipeline, and the battery cells and the unit pipeline are both disposed in the battery container and adjacent to each other with the unit pipeline disposed therebetween.
Optionally, the thermal management system further includes a heating device connected in series between the cooling device and the battery pack, an inlet end of the heating device is communicated with an outlet end of the cooling device, and an outlet end of the heating device is communicated with an inlet end of the battery pack.
Optionally, the thermal management system further includes a heating device and a bypass line, the heating device is communicated with the bypass line and the cooling device, and the bypass line is connected in parallel with the cooling device through a three-way valve.
Optionally, the three-way valve comprises an inlet end, a first outlet end and a second outlet end, the inlet end is communicated with the outlet end of the electrical component, the first outlet end is communicated with the inlet end of the cooling device, the second outlet end is communicated with the bypass pipeline,
in a first open state of the three-way valve, the outlet end of the electrical component and the cooling device are in communication,
in a second open state of the three-way valve, the outlet end of the electrical component is in communication with the bypass line.
Optionally, the cooling device further comprises a fan to improve cooling efficiency.
Optionally, the three-way valve comprises an inlet end, a first outlet end and a second outlet end, the inlet end is communicated with the outlet end of the pipeline of the electrical component, the first outlet end is communicated with the inlet end of the cooling device, the second outlet end and the outlet end of the cooling device are communicated with the inlet end of the second heating device,
in a first open state of the three-way valve, the piping of the electrical component and the cooling device are in communication,
in a second open state of the three-way valve, the conduit of the electrical component and the second heating device are in communication.
Therefore, the heating efficiency can be rapidly improved, and the heat loss is avoided.
Optionally, the density of the solid-liquid phase-change microcapsules is comparable to the density of the cooling liquid, so that the solid-liquid phase-change microcapsules can be suspended in the cooling liquid.
Optionally, the drive means is connected in series between the cooling means and the battery pack and is disposed upstream of the battery pack.
Optionally, the thermal management system further comprises a control system electrically connected to each device to control the operation of each device.
The utility model also provides a vehicle, the vehicle includes foretell thermal management system.
Drawings
The following drawings of the present invention are used herein as part of the present invention for understanding the present invention. There are shown in the drawings embodiments of the invention and the description thereof for the purpose of illustrating the devices and principles of the invention. In the drawings, there is shown in the drawings,
fig. 1 is a schematic diagram of a thermal management system according to an embodiment of the present invention;
fig. 2 is a perspective view of a battery pack according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view of the battery pack shown in FIG. 2;
fig. 4 is a schematic diagram of a thermal management system according to another embodiment of the present invention.
Description of reference numerals:
100: the thermal management system 101: battery pack
102: electrical component 104: battery container
105: the battery cell 106: unit pipeline
107: cooling device 108: heat exchanger
109: a fan 110: drive device
111: the heating device 112: control system
113: three-way valve
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the present invention.
In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It is apparent that the practice of the invention is not limited to the specific details known to those skilled in the art. The present invention is described in detail below with reference to the preferred embodiments, however, the present invention can have other embodiments in addition to the detailed description, and should not be construed as being limited to the embodiments set forth herein.
It is to be understood that the terms "a," "an," and "the" as used herein are intended to describe specific embodiments only and are not to be taken as limiting the invention, which is intended to include the plural forms as well, unless the context clearly indicates otherwise. When the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. The terms "upper", "lower", "front", "rear", "left", "right" and the like as used herein are for illustrative purposes only and are not limiting.
Ordinal words such as "first" and "second" are referred to in this application as labels only, and do not have any other meanings, such as a particular order, etc. Also, for example, the term "first component" does not itself imply the presence of "second component", and the term "second component" does not itself imply the presence of "first component".
Hereinafter, specific embodiments of the present invention will be described in more detail with reference to the accompanying drawings, which illustrate representative embodiments of the present invention and do not limit the present invention.
Fig. 1 illustrates a thermal management system 100 according to an embodiment of the present invention.
The coolant comprises solid-liquid phase change microcapsules and cooling liquid, and is formed by mixing the solid-liquid phase change microcapsules and the cooling liquid in a certain proportion. The solid-liquid phase change microcapsules can be made of solid-liquid phase change materials using microencapsulation techniques in solid-liquid phase change materials. In the present embodiment, the microcapsule technology refers to a technology in which a solid or liquid solid-liquid phase change material is coated with a film forming material to form fine particles having a core-shell structure.
At high temperature, when the coolant flows through the battery pack, the solid-liquid phase-change microcapsules may absorb heat of the battery pack 101 to allow a portion of the solid-liquid phase-change microcapsules to undergo solid-liquid phase change, so that the battery pack 101 is cooled, and the temperature of the coolant does not change, thereby maintaining the operation of the battery pack 101 at room temperature.
The outlet end of the battery pack 101 may communicate with the inlet end of the electrical component 102. Thus, the coolant heat-exchanged with the battery pack 101 can enter the electrical component 102, and further, heat-exchanged with the electrical component 102. At this time, part of the solid-liquid phase change microcapsules in the coolant may absorb heat of the electrical component 102 to generate solid-liquid phase change, thereby dissipating heat from the electrical component 102.
The cooling device 107 is located between the battery pack 101 and the electrical component 102. The outlet end of the electrical component 102 is communicated with the inlet end of the cooling device 107, and the cooling device 107 can dissipate heat of the coolant, so that the solid-liquid phase-change microcapsules in the coolant flowing into the cooling device 107 dissipate heat to change from a liquid state to a solid state, and the temperature is kept unchanged.
The outlet end of the cooling device 107 is communicated with the inlet end of the battery pack 101, so that the cooled coolant flows back to the pipeline of the battery pack 101 again for the next round of heat dissipation.
According to the utility model discloses a heat management system, coolant among the heat management system is the mixture of solid-liquid phase change microcapsule and coolant liquid, has utilized solid-liquid phase change refrigerated principle, and solid-liquid phase change microcapsule can absorb the heat that group battery and/or electrical apparatus part become liquid from solid-state, and keeps the temperature unchangeable to the realization is under high temperature environment, and under the battery temperature required the condition that keeps the room temperature, can go out heat transfer smoothly, thereby plays a purpose of keeping battery constant temperature work.
In addition, under a low-temperature environment, the coolant can absorb heat generated by the electrical component 102 to heat the battery pack 101, so that the electrical component 102 is heated while dissipating heat, and redundant heat of the electrical component 102 is utilized, so that energy, cost and space are saved.
In some embodiments of the present invention, as shown in fig. 2 and 3, the battery pack 101 includes a battery container 104 and a battery unit 105, the battery container 104 may be configured in a substantially rectangular parallelepiped structure, and both sides of the battery container 104 are provided with a positive electrode and a negative electrode, respectively, so as to facilitate wire connection. The battery cell 105 is disposed in the battery container 104. The battery container 104 may have a plurality of battery cells 105 disposed therein, and the plurality of battery cells 105 may be arranged at intervals along the length direction of the battery container 104.
The cooling circuit flowing through the battery pack 101 includes a unit circuit 106, and the unit circuit 106 may be disposed in the battery container 104. A plurality of unit pipes 106 may be disposed in the battery container 104, and a unit pipe 106 is disposed between each adjacent two of the battery cells 105. The unit pipe 106 may be constructed in a plate-shaped structure. The coolant flows through each unit pipe 106 to heat-exchange each battery cell 105. In this way, the plurality of battery units 105 can exchange heat with the plurality of unit pipelines 106 respectively, so that the plurality of battery units 105 can be cooled simultaneously, the cooling efficiency is improved, and the battery pack 101 is prevented from being intensively overheated.
The process of changing the solid-liquid phase change material is described below.
In the coolant entering the battery pack 101, the solid-liquid phase-change material in the solid-liquid phase-change microcapsules may be configured as a solid, which may absorb heat from the battery pack 101, such that a portion of the solid-liquid phase-change material undergoes a solid-liquid phase change to a liquid, and another portion of the solid-liquid phase-change material remains configured as a solid. The temperature of the coolant in the pipe passing through the battery pack 101 does not change.
For example, a coolant is disposed in each of the plurality of unit pipes 106, the coolant in each of the plurality of unit pipes 106 can exchange heat with the plurality of battery cells 105, and the solid-liquid phase-change material in the unit pipe 106 can absorb heat of the battery cells 105, so that a portion of the solid-liquid phase-change material absorbs heat and is in a liquid state, and another portion of the solid-liquid phase-change material is still in a solid state. The temperature of the coolant in the unit pipe 106 does not change. From this, can keep distributing away the battery heat under the unchangeable circumstances of battery temperature, simultaneously, owing to take place the phase transition heat dissipation through phase change material, the radiating efficiency of battery is high.
In the coolant entering electrical component 102, the solid-liquid phase-change material in the solid-liquid phase-change microcapsules may absorb heat from electrical component 102, causing all of the solid-liquid phase-change material to change to a liquid state. In this way, the coolant achieves both heat dissipation to the battery pack 101 and heat dissipation to the electrical component 102.
The coolant after heat exchange with the battery pack 101 and the electrical component 102 flows into the cooling device 107, and forced heat dissipation of the cooling device 107 is performed on the coolant, so that the solid-liquid phase-change material in the coolant is changed from a liquid state to a solid state to enter the next heat dissipation cycle, and therefore heat of the battery pack 101 can be transferred to the air while the temperature of the battery pack 101 is kept unchanged at room temperature, and the battery pack 101 can work at a constant temperature.
The density of the solid-liquid phase-change microcapsules is equivalent to that of the cooling liquid, so that the solid-liquid phase-change microcapsules can be suspended in the cooling liquid. Therefore, the solid-liquid phase-change microcapsules in the coolant are distributed relatively uniformly, and the solid-liquid phase-change microcapsules can flow along with the flow of the coolant, so that the temperature of the battery pack 101 and the electrical component 102 can be absorbed in time.
The cooling device further includes a fan 109 to increase the convection velocity of air, thereby increasing the cooling efficiency of the cooling device.
In order to realize the normal operation of the battery pack 101 in a low-temperature environment, the thermal management system 100 further includes a heating device 111, the heating device 111 is connected in series between the cooling device 107 and the battery pack 101 for heating the coolant, an inlet end of the heating device 111 is communicated with an outlet end of the cooling device 107, and an outlet end of the heating device 111 is communicated with an inlet end of the battery pack 101.
The heating device 111 may be a PTC (Positive Temperature Coefficient thermistor) for heating the coolant in a low Temperature environment, thereby heating the battery pack 101 to maintain the Temperature of the battery pack 101 at a normal operating Temperature.
In addition, the electrical component 102 is connected in series in the thermal management system, and heat released by the operation of the electrical component 102 can be effectively utilized in a low-temperature environment, so that the coolant is heated, and energy and cost are saved.
In the thermal management system 100, the driving device 110 is connected in series between the cooling device 107 and the battery pack 101, and the driving device 110 is disposed upstream of the battery pack 101 to drive the coolant to smoothly flow into the respective unit pipes of the battery pack 101. The drive means 110 may be configured as a pump, which is simple and reliable.
In some embodiments of the present invention, thermal management system 100 further comprises a control system 112, and control system 112 is electrically connected to each device to control the operation of each device. For example, the control system 112 may be electrically connected to both the battery pack 101 and the cooling device 107, and the control system 112 may control the operation of the cooling device 107 according to the state of the battery pack 101. Therefore, the temperature of the battery pack 101 can be quickly responded, and the purposes of quickly heating and cooling are achieved.
Further, the control system 112 may be electrically connected to the fan 109, and the control system 112 may control the rotation speed and/or start and stop of the fan 109 according to the temperature and the operating state of the battery pack 101. When the battery pack 101 is charged and discharged rapidly, the temperature of the battery pack 101 rises rapidly, and the cooling device 107 can react in time to prevent energy accumulation and improve dynamic performance.
The control system 112 may also be electrically connected to the heating device 111, and the control system 112 may control the operation of the heating device 111 according to the state of the battery pack 101. The control system 112 can collect the temperature of the battery pack 101 to control the operation of the heating device 111. When the operating temperature of the battery pack 101 is low, the control system 112 may control the heating device 111 to be turned on to prevent low temperature from affecting the use of the battery pack 101. When the operating temperature of the battery pack 101 reaches the desired temperature, the control system 112 may control the heating device 111 to be turned off so that the battery pack is maintained at a normal operating temperature.
The control system 112 may also be electrically connected to the driving device 110, and the control system 112 may control the driving device 110 to operate according to the temperature of the battery pack 101. When the temperature of the battery pack 101 is high, the control system 112 controls the rotational speed of the driving device 110 to be increased to increase the flow rate of the coolant that exchanges heat with the battery pack 101 per unit time. When the temperature of the battery pack 101 is low, the control system 112 may control the rotation speed of the driving device 110 to be decreased to reduce the amount of coolant that exchanges heat with the battery pack 101 per unit time.
The control system 112 may control the heating device 111 to be turned on, and the heating device 111 and the electrical component 102 simultaneously heat the coolant, and the heated coolant enters the battery pack 101, so as to heat the battery pack 101. Therefore, the heat released by the electric appliance part 102 can be effectively utilized, energy recycling is realized, and the phenomenon that the performance is influenced due to the fact that the temperature of the battery pack 101 is too low is avoided.
When the temperature of the battery pack 101 rises, the control system 112 detects that the temperature of the battery pack 101 reaches the operating temperature, and the control system 112 controls the heating device 111 to be turned off. At this time, the solid-liquid phase change material flowing through the battery pack 101 absorbs heat of the battery pack 101, and the solid-liquid phase change material flowing through the electrical component 102 absorbs heat of the electrical component 102, so that a heat preservation effect is performed on the coolant, a heat preservation effect is performed on the battery pack 101, waste heat is effectively utilized, and energy is saved.
Fig. 4 shows a thermal management system 100 according to another embodiment of the present invention, and the differences are described below, and the descriptions of the similarities are omitted.
The thermal management system 100 further comprises a heating device 111 and a bypass line, the heating device 111 being in communication with the bypass line and the cooling device 107, the bypass line being connected in parallel with the cooling device by a three-way valve.
That is, the bypass line and the cooling device 107 communicate with the electrical component 102 through the three-way valve 113. Thus, when the battery pack 101 needs to be cooled, the battery pack 101 and the electrical component 102 communicate with the cooling device 107 through the three-way valve 113, and the heating device 111 is turned off; when the battery pack 101 needs to be heated, the heating device 111 is turned on, and the heating device 111, the battery pack 101 and the electrical component 102 are connected in series and communicated with the bypass pipeline through the three-way valve 113 to short-circuit the cooling device 107, so that heat loss caused by heat dissipation of the cooling device 107 is avoided.
More specifically, the three-way valve 113 may include an inlet end, a first outlet end, and a second outlet end, the inlet end of the three-way valve 113 being in communication with the outlet end of the appliance part 102, the first outlet end of the three-way valve 113 being in communication with the inlet end of the cooling device 107, and the second outlet end of the three-way valve 113 being in communication with the bypass line.
In the first open state of the three-way valve 113, the outlet end of the electrical component 102 and the cooling device 107 are in communication. The coolant from the electrical component 102 may enter the cooling device 107 via the three-way valve 113, so that the coolant is radiated by the cooling device 107.
In the second open state of the three-way valve 113, the outlet end of the electrical component 102 communicates with the bypass line. The coolant from the electrical component 102 can enter the bypass line through the three-way valve 113 and then enter the heating device 111, and the heating device 111 heats the coolant, so that the cooling device 107 is short-circuited at the moment, heat loss can be reduced, heating efficiency is improved, and energy is saved.
The utility model also provides a vehicle, the vehicle includes foretell thermal management system.
According to the utility model discloses a vehicle, in thermal management system, utilized solid-liquid phase change refrigerated principle, can realize that the group battery keeps the purpose of constant temperature work, and one set of cooling system can be shared to group battery and electrical components, and the coolant can both cooled down the group battery, cools down electrical components again, in addition, can also utilize electrical components's used heat to the group battery heating under the low temperature environment, energy saving, cost and space.
Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Terms such as "part," "member," and the like, when used herein, can refer to either a single part or a combination of parts. Terms such as "mounted," "disposed," and the like, as used herein, may refer to one component as being directly attached to another component or one component as being attached to another component through intervening components. Features described herein in one embodiment may be applied to another embodiment, either alone or in combination with other features, unless the feature is otherwise inapplicable or otherwise stated in the other embodiment.
The present invention has been described in terms of the above embodiments, but it is to be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the invention to the described embodiments. Furthermore, it will be understood by those skilled in the art that the present invention is not limited to the above-described embodiments, and that many more modifications and variations can be made in accordance with the teachings of the present invention, all of which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The heat management system is characterized by comprising a driving device, a battery pack, an electrical component and a cooling device, wherein the driving device, the battery pack, the electrical component and the cooling device are connected in series through cooling pipelines, the driving device drives a coolant to flow through the battery pack and the electrical component in sequence after being cooled by the cooling device so as to dissipate heat of the battery pack and the electrical component, and the coolant is a mixture of solid-liquid phase change microcapsules and a cooling liquid.
2. The thermal management system of claim 1, wherein the battery pack comprises a battery container and battery cells, wherein the cooling line through the battery pack comprises cell lines, wherein the battery cells and the cell lines are both disposed in the battery container and wherein a cell line is disposed between adjacent battery cells.
3. The thermal management system of claim 1, further comprising a heating device connected in series between the cooling device and the battery pack, an inlet end of the heating device in communication with an outlet end of the cooling device, an outlet end of the heating device in communication with an inlet end of the battery pack.
4. The thermal management system of claim 1, further comprising a heating device in communication with the bypass line and the cooling device and a bypass line in parallel with the cooling device through a three-way valve.
5. The thermal management system of claim 4, wherein the three-way valve includes an inlet port in communication with the outlet port of the electrical component, a first outlet port in communication with the inlet port of the cooling device, and a second outlet port in communication with the bypass line,
in a first open state of the three-way valve, the outlet end of the electrical component and the cooling device are in communication,
in a second open state of the three-way valve, the outlet end of the electrical component is in communication with the bypass line.
6. The thermal management system of claim 1, wherein the cooling device further comprises a fan to increase cooling efficiency.
7. The thermal management system of claim 6, wherein the density of the solid-liquid phase-change microcapsules is comparable to the density of the cooling liquid to enable the solid-liquid phase-change microcapsules to be suspended in the cooling liquid.
8. The thermal management system of claim 1, wherein the drive device is connected in series between the cooling device and the battery pack and is disposed upstream of the battery pack.
9. The thermal management system of any of claims 1-8, further comprising a control system electrically connected to each device to control operation of each device.
10. A vehicle, characterized in that the vehicle comprises a thermal management system according to any of claims 1-9.
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| CN202020963176.8U CN212587569U (en) | 2020-05-29 | 2020-05-29 | Thermal management system and vehicle |
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| CN202020963176.8U CN212587569U (en) | 2020-05-29 | 2020-05-29 | Thermal management system and vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113212100A (en) * | 2021-06-02 | 2021-08-06 | 合肥工业大学 | Pure electric vehicle integrated heat management system and method based on phase change capsules |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113212100A (en) * | 2021-06-02 | 2021-08-06 | 合肥工业大学 | Pure electric vehicle integrated heat management system and method based on phase change capsules |
| CN113212100B (en) * | 2021-06-02 | 2022-08-16 | 合肥工业大学 | Pure electric vehicle integrated heat management system and method based on phase change capsules |
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