CN116960527A - Battery thermal management system and control method thereof - Google Patents
Battery thermal management system and control method thereof Download PDFInfo
- Publication number
- CN116960527A CN116960527A CN202311051058.4A CN202311051058A CN116960527A CN 116960527 A CN116960527 A CN 116960527A CN 202311051058 A CN202311051058 A CN 202311051058A CN 116960527 A CN116960527 A CN 116960527A
- Authority
- CN
- China
- Prior art keywords
- management system
- thermal management
- pipeline
- battery
- battery thermal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000001816 cooling Methods 0.000 claims abstract description 130
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 111
- 230000001105 regulatory effect Effects 0.000 claims abstract description 56
- 238000005057 refrigeration Methods 0.000 claims abstract description 28
- 230000005855 radiation Effects 0.000 claims abstract description 13
- 230000017525 heat dissipation Effects 0.000 claims description 23
- 239000012530 fluid Substances 0.000 claims description 12
- 238000004891 communication Methods 0.000 claims description 9
- 230000001276 controlling effect Effects 0.000 claims description 9
- 238000007791 dehumidification Methods 0.000 claims description 7
- 238000001802 infusion Methods 0.000 claims description 6
- 238000005265 energy consumption Methods 0.000 abstract description 13
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 239000000110 cooling liquid Substances 0.000 description 32
- 239000002826 coolant Substances 0.000 description 13
- 239000007788 liquid Substances 0.000 description 9
- 238000004146 energy storage Methods 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 5
- 239000012809 cooling fluid Substances 0.000 description 4
- 230000007704 transition Effects 0.000 description 4
- 239000002699 waste material Substances 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- 230000009172 bursting Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002637 fluid replacement therapy Methods 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/63—Control systems
- H01M10/635—Control systems based on ambient temperature
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/615—Heating or keeping warm
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/617—Types of temperature control for achieving uniformity or desired distribution of temperature
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6554—Rods or plates
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6561—Gases
- H01M10/6563—Gases with forced flow, e.g. by blowers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
- H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Automation & Control Theory (AREA)
- Secondary Cells (AREA)
Abstract
The application provides a battery thermal management system and a control method thereof, wherein the battery thermal management system comprises: the main circulation loop comprises a battery water cooling plate, a first water pump, a heat exchanger and a pipeline heater, wherein the heat exchanger is provided with a first heat exchange flow channel and a second heat exchange flow channel, and the battery water cooling plate, the first water pump, the first heat exchange flow channel of the heat exchanger and the pipeline heater are sequentially communicated end to end through a first pipeline; the refrigeration loop comprises a compressor, a condenser and a first regulating valve, wherein the compressor, the condenser, the first regulating valve and a second heat exchange flow passage of the heat exchanger are sequentially communicated end to end through a second pipeline; the natural cooling branch comprises a second regulating valve and a natural cooling coil which are sequentially arranged on a third pipeline, and two ends of the third pipeline are respectively communicated with the first pipelines positioned at two sides of the first heat exchange flow channel; and the heat radiation fan is arranged opposite to the condenser. The battery thermal management system is beneficial to reducing the energy consumption of system operation and improving the safety and stability of equipment.
Description
Technical Field
The application relates to the technical field of battery thermal management, in particular to a battery thermal management system and a control method thereof.
Background
Along with the development of the energy storage battery towards the directions of high energy density and high charging multiplying power, the heat productivity of the battery is increased continuously, so that the heat of the battery is discharged in time, otherwise, the heat is accumulated continuously, the thermal runaway of the battery is easily caused, the service life of the battery is influenced, and even larger potential safety hazards are caused.
At present, a thermal management scheme of a battery mainly comprises an air cooling system and a liquid cooling system, wherein the air cooling system cannot meet heat dissipation requirements, and therefore the liquid cooling system becomes a main stream of thermal management of the battery. However, during the application of the liquid cooling system, the following problems are found: namely, when the liquid cooling system runs at low temperature, the system is unstable, and energy waste is easily caused.
Disclosure of Invention
In view of the above problems, the present application provides a battery thermal management system and a control method thereof, wherein the battery thermal management system is configured such that at least one of a natural cooling branch and a refrigeration loop can operate simultaneously with a main circulation loop, so that the system has more working modes, and the covered working conditions are more comprehensive, thereby overcoming the technical problems described above.
The application provides a battery thermal management system, comprising: the main circulation loop comprises a battery water cooling plate, a first water pump, a heat exchanger and a pipeline heater, wherein the heat exchanger is provided with a first heat exchange flow channel and a second heat exchange flow channel, and the battery water cooling plate, the first water pump, the first heat exchange flow channel of the heat exchanger and the pipeline heater are sequentially communicated end to end through a first pipeline; the refrigeration loop comprises a compressor, a condenser and a first regulating valve, wherein the compressor, the condenser, the first regulating valve and a second heat exchange flow passage of the heat exchanger are sequentially communicated end to end through a second pipeline; the natural cooling branch comprises a second regulating valve and a natural cooling coil pipe, the second regulating valve and the natural cooling coil pipe are sequentially arranged on a third pipeline, and two ends of the third pipeline are respectively communicated with first pipelines positioned at two sides of the first heat exchange flow channel; and the heat dissipation fan is arranged opposite to the condenser.
According to the battery thermal management system, at least one of the natural cooling branch and the refrigeration loop can operate simultaneously with the main circulation loop, so that the system has more working modes, the covered working condition is more comprehensive, the work is more scientific and reasonable, the system operation energy consumption is reduced, and the safety and the stability of equipment are improved.
In some embodiments, the battery thermal management system further comprises: and the safety valve is connected with the main circulation loop to release pressure for the battery thermal management system.
In some embodiments, the battery thermal management system further comprises: the fluid infusion branch comprises a fluid infusion water tank and a second water pump, one end of the second water pump is communicated with the fluid infusion water tank, and the other end of the second water pump is communicated with the main circulation loop.
In some embodiments, the make-up tank is also in communication with the relief valve through a fourth line.
In some embodiments, the battery thermal management system further comprises: the air inlet end of the first exhaust valve is communicated with the first pipeline; and/or, a second exhaust valve, wherein the air inlet end of the second exhaust valve is communicated with the third pipeline.
In some embodiments, the battery thermal management system further comprises: a dehumidification branch comprising: the third regulating valve and the dehumidifying heat exchanger are sequentially arranged on a fifth pipeline, one end of the fifth pipeline is communicated with a second pipeline between the second heat exchange flow channel and the compressor, and the other end of the fifth pipeline is communicated with a second pipeline between the second heat exchange flow channel and the first regulating valve; the dehumidifying fan is arranged opposite to the dehumidifying heat exchanger.
A second aspect of the present application provides a control method of a battery thermal management system, applied to the battery thermal management system according to the first aspect of the present application, comprising the steps of:
acquiring an ambient temperature;
determining a temperature range in which the ambient temperature is located, wherein the temperature range comprises a first preset temperature range, a second preset temperature range and a third temperature range;
according to the temperature range of the ambient temperature, controlling the battery thermal management system to operate in a corresponding working mode, wherein the working mode at least comprises: the device comprises a first working mode, a second working mode and a third working mode, wherein the first preset temperature range corresponds to the first working mode, the second preset temperature range corresponds to the second working mode, and the third preset temperature range corresponds to the third working mode.
According to the control method of the battery thermal management system, the corresponding working mode is switched for the battery thermal management system according to the ambient temperature, so that the battery thermal management system is more efficient and energy-saving in work, the covered working condition is more comprehensive, the comprehensive energy consumption of equipment can be reduced while the heat dissipation requirement of the battery is met, and the safety and stability of the equipment are improved.
In some embodiments, the first preset temperature range is T.gtoreq.13 ℃, the second preset temperature range is-5.gtoreq.T.gtoreq.13 ℃, and the third preset temperature range is T.ltoreq.5 ℃.
In some embodiments, in the first operation mode, the first water pump, the heat dissipation fan and the compressor are controlled to be turned on, and the second regulating valve is controlled to be turned off, wherein the compressor is operated at a first set power; in the second working mode, the first water pump, the heat radiation fan, the compressor and the second regulating valve are controlled to be started, wherein the compressor operates at a second set power, and the second set power is lower than the first set power; and in the third working mode, the first water pump and the heat radiation fan are controlled to be started, the compressor is controlled to be closed, and the second regulating valve is controlled to be started.
In some embodiments, the control method further comprises the steps of: acquiring the water pressure of the battery thermal management system; and when the water pressure exceeds the set water pressure, starting a pressure relief program.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a battery thermal management system according to an embodiment of the present application;
fig. 2 is a control flow chart of a control method of the battery thermal management system according to an embodiment of the application.
Reference numerals illustrate:
100-battery thermal management system;
101-a battery water cooling plate; 102-a first water pump; 103-a heat exchanger; 104-a heater;
105-compressor; 106-a condenser; 107-a first regulating valve; 108-a second regulating valve;
109-natural cooling coil; 110-a safety valve; 111-a fluid replacement water tank; 112-a second water pump;
113-a first line; 114-a second line; 115-a third line; 116-fourth line;
117-a first exhaust valve; 118-a second exhaust valve; 119-a one-way valve; 120-a liquid adding port; 121-a heat radiation fan; 122-expansion tank; 123-a third regulating valve; 124-a dehumidifying heat exchanger; 125-a dehumidifying fan; fifth line 126.
Detailed Description
In order to make the above objects, features and advantages of the embodiments of the present application more comprehensible, the technical solutions of the embodiments of the present application will be described clearly and completely with reference to the accompanying drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Along with the development of the energy storage battery towards the directions of high energy density and high charging multiplying power, the heat productivity of the battery is increased continuously, so that the heat of the battery is discharged in time, otherwise, the heat is accumulated continuously, the thermal runaway of the battery is easily caused, the service life of the battery is influenced, and even larger potential safety hazards are caused. At present, a thermal management scheme of a battery mainly comprises an air cooling system and a liquid cooling system, wherein the air cooling system cannot meet heat dissipation requirements, and therefore the liquid cooling system becomes a main stream of thermal management of the battery. However, during the application of the liquid cooling system, the following problems are found: namely, when the liquid cooling system runs at low temperature, the system is unstable, and energy waste is easily caused.
In view of this, the application provides a battery thermal management system and a control method thereof, wherein the battery thermal management system is structured such that at least one of a natural cooling branch and a refrigeration loop can run simultaneously with a main circulation loop, so that the system has more working modes, the covered working condition is more comprehensive, the working is more efficient and energy-saving, and the reduction of comprehensive energy consumption of equipment is facilitated.
A battery thermal management system 100 according to an embodiment of the first aspect of the present application is described below with reference to fig. 1 and 2.
Referring to fig. 1, a battery thermal management system 100 of the present embodiment may be used in a vehicle, an energy storage electric cabinet, or other electric devices that use a battery as an energy storage component. The battery thermal management system 100 may include: a main circulation circuit, a refrigeration circuit, and a natural cooling branch, and a heat radiation fan 121.
Wherein the main circulation loop includes a battery water cooling plate 101, a first water pump 102, a heat exchanger 103, and a pipe heater 104, wherein the battery water cooling plate 101 may be plural, and the plurality of battery water cooling plates 101 may be arranged in parallel or in series. The heat exchanger 103 may be a plate heat exchanger, the heat exchanger 103 having a first heat exchange flow path and a second heat exchange flow path. The inside of the pipe heater 104 defines a passage so as to be connected with the first pipe 113.
The battery water cooling plate 101, the first water pump 102, the first heat exchange flow passage of the heat exchanger 103 and the heater 104 are communicated end to end in sequence through a first pipeline 113. In this way, the cooling liquid can flow in the main circulation loop under the driving of the first water pump 102, wherein the cooling liquid can exchange heat with the cooling medium in the second heat exchange flow passage of the heat exchanger 103 when flowing through the first heat exchange flow passage of the heat exchanger 103, so as to realize cooling. It will be appreciated that the main circulation loop may dissipate heat from and cool the battery water cooling plate 101 when the heater 104 is not in operation, and may heat the coolant when the heater 104 is in operation, thereby heating the battery water cooling plate 101 to cope with a cold environment.
Alternatively, the cooling liquid flowing in the main circulation loop may be glycol cooling liquid, and of course, may be other types of cooling liquid, which is not limited in the present application.
The refrigeration circuit may include a compressor 105, a condenser 106, and a first regulating valve 107, where the compressor 105 may perform refrigeration during operation, and the first regulating valve 107 may be an electronic expansion valve, so that the first regulating valve 107 has a throttling and depressurization function in the system, and of course, the first regulating valve 107 may be another type of regulating valve.
The compressor 105, the condenser 106, the first regulating valve 107 and the second heat exchanging channel of the heat exchanger 103 are sequentially communicated end to end through a second pipeline 114, and the cooling medium in the refrigeration circuit can be freon. Thus, when the compressor 105 works, the cooling medium flows through the second heat exchange flow channel of the heat exchanger 103, and exchanges heat with the cooling liquid of the main circulation loop in the first heat exchange flow channel, so that the cooling liquid is cooled, the cooling of the battery water cooling plate 101 is realized, and finally the cooling of the battery is realized.
The natural cooling branch may include a second regulating valve 108 and a natural cooling coil 109, the second regulating valve 108 and the natural cooling coil 109 being sequentially disposed on a third pipe 115, wherein both ends of the third pipe 115 are in communication with the first pipe 113 located at both sides of the first heat exchange flow passage.
In other words, the inlet end of the second regulating valve 108 is communicated with the first pipeline 113 between the first water pump 102 and the heat exchanger 103, and the outlet end of the natural cooling coil 109 is communicated with the first pipeline 113 between the heat exchanger 103 and the heater 104, wherein the second regulating valve 108 may be a two-way regulating valve, such as an electric two-way valve, the second regulating valve 108 may control on-off of the natural cooling branch, and when the second regulating valve 108 is opened, at least part of the cooling liquid in the main circulation loop may flow through the natural cooling coil 109, so that the main circulation loop and the natural cooling branch operate simultaneously, and the heat dissipation and cooling capability of the system 100 is improved to a certain extent.
The heat-dissipating fan 121 is disposed opposite to the condenser 106, and at the same time, the heat-dissipating fan 121 is disposed opposite to the natural cooling coil 109, so that the heat-dissipating fan 121 can dissipate heat from the condenser 106 and the natural cooling coil 109.
It will be appreciated that, since the second regulating valve 108 is a component in the natural cooling branch, that is, it is only used to control the on-off of the natural cooling branch, and is not used to select one of the main circulation circuit and the natural cooling branch to operate, the natural cooling branch of the present embodiment may operate simultaneously with the main circulation circuit, and when the compressor 105 operates, the main circulation circuit and the refrigeration circuit may operate simultaneously. That is, the main circulation circuit may be operated alone, or any one of the refrigeration circuit and the natural cooling branch may be operated simultaneously with the main circulation circuit, or the main circulation circuit, the refrigeration circuit, and the natural cooling branch may be operated simultaneously.
The battery thermal management system 100 of the present embodiment at least includes the following operation modes:
self-circulation mode: in this mode, neither the heat dissipation fan 121 nor the compressor 105 is started, the pipe heater 104 is turned off, and only the first water pump 102 is turned on, so that the first water pump 102 can provide power for the circulation of the cooling liquid in the main circulation loop, the cooling liquid in the battery pack flows, and the temperature uniformity of the cooling liquid is ensured.
Gao Huanwen refrigeration mode: when the high-loop-temperature (i.e., ambient temperature) cooling mode is turned on, the compressor 105 in the cooling circuit is turned on, the heat radiation fan 121 is turned on, the first water pump 102 in the main circulation circuit is turned on, and the pipe heater 104 is turned off. The cooling liquid in the main circulation loop passes through the heat exchanger 103 and enters the battery water-cooling plate 101 to cool the battery pack, the temperature of the cooling liquid rises after absorbing the heat of the battery pack, and then the cooling liquid enters the heat exchanger 103 again to cool the battery pack again and then enters the battery water-cooling plate 101 to cool the battery pack, so that the battery cooling circulation is completed. In this mode, compressor 105 is required to operate at higher power to provide sufficient heat rejection capacity, since it relies primarily on the refrigeration circuit to reject heat from the battery.
Transition temperature cooling mode: when the transition temperature refrigeration mode is started, the compressor 105 in the refrigeration loop is started, and the heat radiation fan 121 is started; the first water pump 102 in the main circulation loop is on, the pipe heater 104 is off, and the second regulating valve 108 in the natural cooling branch is on. In this way, the cooling liquid is cooled by the heat exchanger 103 and the natural cooling coil 109 respectively, and enters the battery water cooling plate 101 after being mixed, so as to cool the battery pack. The temperature of the cooling liquid rises after absorbing the heat of the battery pack, then the cooling liquid enters the heat exchanger 103 and the natural cooling coil 109 to cool again, and then enters the battery water cooling plate 101 to cool the battery pack, so that the battery cooling cycle is completed. In this mode, since the ambient temperature is relatively high, only the heat dissipating fan 121 and the natural cooling coil 109 are running with insufficient heat dissipating capacity, the compressor 105 can be turned on simultaneously, allowing the compressor 105 to run at a lower power to provide the heat dissipating capacity of the section, thereby enabling the system 100 to provide sufficient heat dissipating capacity. This helps to reduce the energy consumption of the system 100 during heat dissipation and also helps to keep the system 100 stable, as compared to operating the compressor 105 only at high power.
Low-ambient temperature refrigeration mode: when the low-temperature cooling mode is started, the compressor 105 in the cooling circuit is controlled to be closed; controlling the cooling fan 121 to be turned on; controlling the first water pump 102 in the main circulation loop to be turned on, and the pipeline heater 104 to be turned off; the second regulating valve 108 in the natural cooling branch is controlled to open. The cooling liquid is cooled by the natural cooling coil 109 and then enters the battery water cooling plate 101 to cool the battery pack, the temperature of the cooling liquid is increased after the cooling liquid absorbs the heat of the battery pack, and then enters the natural cooling coil 109 to cool the battery pack again and then enters the cooling plate to cool the battery pack, so that the battery cooling circulation is completed. In this mode, only natural cooling coil 109 and heat rejection fan 121 participate in cooling, resulting in less energy consumption of system 100.
Heating mode: when the heating mode is started, the cooling fan 121 and the compressor 105 in the refrigerating circuit are controlled to be closed; the first water pump 102 of the main circulation loop is controlled to be started, and the pipeline heater 104 is controlled to be started; the second regulator valve 108 is controlled to close or open the free cooling branch. The cooling liquid is heated by the pipeline heater 104, enters the battery pack to heat the battery, reduces the temperature after transferring heat to the battery pack, then enters the pipeline heater 104 again to heat up again, enters the battery pack to exchange heat, and completes the battery heating cycle. When the temperature of the external environment is too low, for example, in winter or in a cold region, the battery thermal management system 100 may be switched to a heating mode in order to keep the battery cell temperature within a certain temperature range and thus to allow the device to operate normally.
Standby mode: in this mode, the heat radiation fan 121, the compressor 105 and the pipe heater 104 are controlled to be turned off, and the first water pump 102 is operated at a set frequency, so that the battery thermal management system 100 can detect the temperature of the coolant in the main circulation loop.
It should be noted that, the natural cooling branch, the main circulation loop and the refrigeration loop in the embodiment may operate simultaneously as required, such as the above-mentioned transition temperature refrigeration mode; alternatively, the natural cooling branch and the main circulation loop operate simultaneously, such as in the low-loop cooling mode described above. Therefore, the battery thermal management system 100 of the embodiment has more operation modes, can cope with different working conditions in a more reasonable mode, and is beneficial to reducing comprehensive energy consumption.
According to the battery thermal management system 100 provided by the embodiment of the application, at least one of the natural cooling branch and the refrigeration loop can operate simultaneously with the main circulation loop, so that the system 100 has more working modes, the covered working condition is more comprehensive, the operation is more efficient and energy-saving, the operation energy consumption of the system 100 is reduced, and the safety and stability of equipment are improved.
In some embodiments, the condenser 106 and the natural cooling coil 109 may be disposed opposite to each other, so that the heat dissipation fan 121 may also dissipate heat from the natural cooling coil 109, that is, only one heat dissipation fan 121 needs to be disposed to dissipate heat from the condenser 106 and the natural cooling coil 109, so that the heat dissipation fan is omitted for the natural cooling coil 109, which is helpful for reducing the number of components of the system 100, optimizing the layout of the system 100, and reducing space occupation.
In some embodiments, referring to fig. 1, the battery thermal management system 100 may further comprise: a relief valve 110. Specifically, the relief valve 110 is connected to the first pipe 113 of the main circulation circuit, and the outlet of the relief valve 110 may be in communication with the outside, but may also be in communication with the make-up water tank 111 (e.g., the make-up water tank 111 hereinafter). Thus, when the water pressure in the system 100 (including the water pressure of the main circulation loop and the natural cooling branch) exceeds the water pressure threshold, for example, when the water pressure in the system 100 exceeds 3bar, the safety valve 110 can be opened to start pressure relief, so that the battery water cooling plate 101 is prevented from bursting due to the excessively high pressure, and safety is improved.
Alternatively, the inlet of the safety valve 110 may be connected to the first pipe 113 between the battery water cooling plate 101 and the heater 104, so that the safety valve 110 is closer to the battery water cooling plate 101, which is more helpful to improve the pressure release efficiency of the battery water cooling plate 101.
In some embodiments, referring to fig. 1, the battery thermal management system 100 may further comprise: and a fluid supplementing branch. Specifically, the fluid-supplementing branch may include a fluid-supplementing water tank 111 and a second water pump 112, where one end of the second water pump 112 is communicated with the fluid-supplementing water tank 111 and the other end is communicated with the main circulation loop, for example, the other end of the second water pump 112 may be communicated with a first pipeline 113 between the battery water-cooling plate 101 and the first water pump 102, so that when the cooling fluid in the battery thermal management system 100 is reduced due to loss during operation, the second water pump 112 may be controlled to operate, and the second water pump 112 drives the fluid in the fluid-supplementing water tank 111 to actively supplement fluid in the main circulation loop, thereby ensuring stable operation of the system 100
In some embodiments, referring to fig. 1, the fluid-filled water tank 111 is further communicated with the safety valve 110 through the fourth pipeline 116, so that when the safety valve 110 is used for depressurizing the system 100, the cooling fluid in the system 100 can be discharged into the fluid-filled water tank 111, and thus, the cooling fluid entering the fluid-filled water tank 111 can continue to participate in the subsequent working cycle, thereby avoiding waste and reducing the use cost of the system 100.
In some embodiments, referring to fig. 1, the fluid-supplementing branch further includes a check valve 119, where the check valve 119 is disposed between the second water pump 112 and the main circulation loop, so that the coolant in the system 100 can be prevented from flowing back into the second water pump 112 and then returning to the fluid-supplementing water tank 111 when the water pressure increases.
Optionally, a filling port 120 is provided on the first line 113 of the main circulation circuit, and the filling port 120 may be used to fill the system 100 with the cooling fluid after the initial assembly of the system 100 is completed.
In some embodiments, referring to fig. 1, the battery thermal management system 100 may further comprise: the first exhaust valve 117 may be disposed on a first exhaust branch, where the first exhaust branch is in communication with the first pipe 113, so that an air inlet end of the first exhaust valve 117 is in communication with the first pipe 113, and thus, when air exists in the main circulation loop, the air is continuously collected inside the first exhaust valve 117, and when the air reaches a certain amount, the first exhaust valve 117 is depressurized, so that the cooling liquid smoothly flows in the main circulation loop.
Optionally, referring to fig. 1, the battery thermal management system 100 may further include a second exhaust valve 118, where the second exhaust valve 118 may be disposed on a second exhaust branch, and the second exhaust branch is in communication with the third pipeline 115, so that an air inlet end of the second exhaust valve 118 is in communication with the third pipeline 115, so that when air exists in the natural cooling branch, air is continuously collected inside the second exhaust valve 118, and when the air reaches a certain amount, the second exhaust valve 118 performs exhaust pressure relief, so that the cooling liquid smoothly flows in the natural cooling branch.
In some embodiments, the first exhaust valve 117 and the second exhaust valve 118 may be automatic exhaust valves, i.e., the first exhaust valve 117 and the second exhaust valve 118 may be configured to automatically open when the air pressure in the corresponding piping reaches a first set air pressure value and to automatically close when the air pressure reaches a second set air pressure value, which may be lower than the first set air pressure, so that the degree of automation of the exhaust can be improved.
In some embodiments, the first regulating valve 107 is an electronic expansion valve, and the second regulating valve 108 is a two-way regulating valve, so that the first regulating valve 107 throttles and reduces pressure of a cooling medium, such as freon, in the refrigeration circuit, and the second regulating valve 108 can be only used for controlling on-off or regulating flow of the natural cooling branch.
In some embodiments, the battery thermal management system 100 further includes an expansion tank 122, and the expansion tank 122 may absorb a portion of the coolant to reduce the water pressure when the coolant water pressure in the system 100 increases, and release the internal coolant into the system when the coolant water pressure decreases, in other words, the expansion tank 122 may provide a portion of buffer space for the coolant to better balance the water pressure.
In some embodiments, referring to fig. 1, the battery thermal management system 100 further comprises: a dehumidification bypass and a dehumidification blower 125. Specifically, the dehumidifying branch may include: the third regulating valve 123 and the dehumidifying heat exchanger 124 are sequentially disposed on the fifth pipeline 126, and the third regulating valve 123 may be a solenoid valve, and one end of the fifth pipeline 126 is communicated with the second pipeline 114 between the second heat exchange flow path and the compressor 105, and the other end is communicated with the second pipeline 114 between the second heat exchange flow path and the first regulating valve 107, that is, the dehumidifying branch may be disposed in parallel with the second heat exchange flow path of the heat exchanger 103. The dehumidifying fan 125 is disposed opposite to the dehumidifying heat exchanger 124. In this way, the battery thermal management system 100 has a dehumidification mode, that is, when the system 100 is switched to the dehumidification mode, the solenoid valve 123 can be opened, and the dehumidification heat exchanger 124 is controlled to operate, so as to dehumidify the battery box body and prevent condensed water from accumulating.
According to some embodiments of the present application, the battery thermal management system 100 may further include a control device (not shown), which may be a PLC (Programmable Logic Controller ), a BMS (Battery Management System, battery management system), or other controllers, and the control device may be respectively communicatively connected to the functional components of the system 100, such as the first water pump 102, the heat exchanger 103, the pipeline heater 104, the compressor 105, the first regulating valve 107, the second regulating valve 108, the heat dissipation fan 121, the safety valve 110, the third regulating valve 123, the dehumidifying heat exchanger 124, and the dehumidifying fan 125, so as to respectively control the operation states of the respective functional components.
A control method of the battery thermal management system 100 according to the second aspect of the embodiment of the present application is described below with reference to fig. 1 and 2.
The control method of the battery thermal management system 100 of the present embodiment may be applied to the battery thermal management system 100 of the above-described embodiment. Specifically, the control method may include the steps of:
s101, acquiring an ambient temperature;
s102, determining a temperature range in which an ambient temperature is located, wherein the temperature range comprises a first preset temperature range, a second preset temperature range and a third temperature range;
s103, controlling the battery thermal management system 100 to operate in a corresponding working mode according to the temperature range of the ambient temperature, wherein the working mode at least comprises: the device comprises a first working mode, a second working mode and a third working mode, wherein a first preset temperature range corresponds to the first working mode, a second preset temperature range corresponds to the second working mode, and a third preset temperature range corresponds to the third working mode.
For example, the ambient temperature may be acquired by an ambient temperature sensor, and then the detection result may be transmitted to the control device, and the control device may determine a temperature range in which the ambient temperature is located, and the temperature range may be one of a first preset temperature range, a second preset temperature range, and a third preset temperature range. The control device may then control the battery thermal management system 100 to switch to a corresponding operation mode according to a temperature range in which the ambient temperature is located, where the operation mode may be one of the first operation mode, the second operation mode, and the third operation mode. And the first preset temperature range corresponds to the first working mode, the second preset temperature range corresponds to the second working mode, and the third preset temperature range corresponds to the third working mode.
It should be noted that, the temperature value in the first preset temperature range is greater than the temperature value in the second preset temperature range, and the temperature value in the second preset temperature range is greater than the temperature value in the third preset temperature range. For example, the first mode of operation may be a high loop temperature cooling mode, the second mode of operation may be a transition temperature cooling mode, and the third mode of operation may be a low loop temperature cooling mode.
It can be appreciated that, because the heat generated by the battery is the same in different ambient temperatures, the heat dissipation capacity of the battery in the three operating modes (including the first operating mode, the second operating mode and the third operating mode) is close, but because the operating power of the refrigeration circuit is far greater than the operating power of the natural cooling branch, when the ambient temperature is lower and the natural cooling branch participates in heat exchange, the power consumption of the heat dissipation of the device can be reduced, for example, in the third operating mode, the battery heat management system mainly depends on the natural cooling branch to operate, so that the overall power consumption of the battery heat management system is reduced.
According to the control method of the battery thermal management system 100, the corresponding working mode is switched for the battery thermal management system 100 according to the ambient temperature, so that the battery thermal management system 100 is efficient and energy-saving in work, the covered working condition is more comprehensive, the comprehensive energy consumption of equipment can be reduced while the heat dissipation requirement of the battery is met, and the safety and stability of the equipment are improved.
In some embodiments, the first preset temperature range is T.gtoreq.13 ℃, the second preset temperature range is-5 ℃ T.gtoreq.13 ℃, and the third preset temperature range is T.ltoreq.5 ℃. That is, when the ambient temperature T1 is greater than or equal to 13 ℃, it indicates that the ambient temperature is higher at this time, the refrigeration circuit needs to be operated to cool the battery, and the battery thermal management system 100 can be switched to the first working mode at this time; when the ambient temperature T1 satisfies-5 ℃ to less than or equal to T1 to less than 13 ℃, the battery thermal management system 100 can be switched to a second operating mode; when the ambient temperature T1 satisfies T1 < -5 ℃, the natural cooling loop may be operated, so that the battery thermal management system 100 may be switched to the third operating mode to save energy consumption.
In this way, the corresponding working mode is switched for the battery thermal management system 100 according to the ambient temperature, so that the work is more scientific and reasonable, the covered working condition is more comprehensive, and the comprehensive energy consumption of the device can be reduced while the heat dissipation requirement of the battery is met.
In some embodiments, in a first mode of operation, the first water pump 102, the heat rejection fan 121, and the compressor 105 are controlled to be on, and the second regulator valve 108 is controlled to be off, wherein the compressor 105 is operated at a first set power; in the second operation mode, the first water pump 102, the heat dissipation fan 121, the compressor 105 and the second regulating valve 108 are controlled to be opened, wherein the compressor 105 operates at a second set power, and the second set power is lower than the first set power; in the third mode of operation, the first water pump 102 and the radiator fan 121 are controlled to be on, the compressor 105 is controlled to be off, and the second regulating valve 108 is controlled to be on.
Specifically, when the first operation mode is started, the compressor 105 in the refrigeration circuit is started, the heat radiation fan 121 is started, the first water pump 102 in the main circulation circuit is started, and the pipe heater 104 is turned off. The cooling liquid in the main circulation loop passes through the heat exchanger 103 and enters the battery water-cooling plate 101 to cool the battery pack, the temperature of the cooling liquid rises after absorbing the heat of the battery pack, and then the cooling liquid enters the heat exchanger 103 again to cool the battery pack again and then enters the battery water-cooling plate 101 to cool the battery pack, so that the battery cooling circulation is completed. In other words, the first operation mode is the above-mentioned high-temperature cooling mode, in which the compressor 105 is operated with a higher first set power, so that the brake circuit provides enough cooling capacity for the main circulation circuit to dissipate heat, so as to cope with the high heat dissipation requirement of the battery pack.
When the second operation mode is started, the compressor 105 in the refrigeration circuit is started, and the heat radiation fan 121 is started; the first water pump 102 in the main circulation loop is on, the pipe heater 104 is off, and the second regulating valve 108 in the natural cooling branch is on. In this way, the cooling liquid is cooled by the heat exchanger 103 and the natural cooling coil 109 respectively, and enters the battery water cooling plate 101 after being mixed, so as to cool the battery pack. The temperature of the cooling liquid rises after absorbing the heat of the battery pack, then the cooling liquid enters the heat exchanger 103 and the natural cooling coil 109 to cool again, and then enters the battery water cooling plate 101 to cool the battery pack, so that the battery cooling cycle is completed. That is, the second operation mode, i.e. the above-mentioned transitional temperature refrigeration mode, in this operation mode, the compressor 105 is operated with a lower second set power, so that the defect of heat dissipation capability during the operation of the natural cooling branch only can be overcome, and meanwhile, the lower power of the compressor 105 is beneficial to reducing energy consumption while meeting the heat dissipation requirement.
When the third operating mode is turned on, the compressor 105 in the refrigeration circuit is controlled to be turned off; controlling the cooling fan 121 to be turned on; controlling the first water pump 102 in the main circulation loop to be turned on, and the pipeline heater 104 to be turned off; the second regulating valve 108 in the natural cooling branch is controlled to open. The cooling liquid is cooled by the natural cooling coil 109 and then enters the battery water cooling plate 101 to cool the battery pack, the temperature of the cooling liquid is increased after the cooling liquid absorbs the heat of the battery pack, and then enters the natural cooling coil 109 to cool the battery pack again and then enters the cooling plate to cool the battery pack, so that the battery cooling circulation is completed. That is, in the third operation mode, i.e. the above-mentioned low-temperature cooling mode, only the heat dissipation fan 121 is turned on in the third operation mode, so as to cope with the heat dissipation requirement of the battery pack in the low-temperature environment.
In some embodiments, the control method may further include the steps of: acquiring the water pressure of the battery thermal management system 100; and when the water pressure exceeds the set water pressure, starting a pressure relief program.
For example, when the water pressure in the battery thermal management system 100 exceeds a set water pressure, the relief valve 110 may be opened, so that the coolant in the system 100 may flow into the makeup tank 111 through the relief valve 110, thereby achieving pressure relief. The set water pressure may be 2.5-3.5bar, for example, the set water pressure may be 2.5bar, 2.8bar, 3bar, 3.3bar or 3.5bar, and the set water pressure may be reasonably selected according to the pressure-bearing performance of the battery water cooling plate 101 or other practical situations. Thus, by timely pressure relief, the battery water cooling panel 101 can be prevented from bursting due to excessive pressure in the system 100.
A powered device according to an embodiment of the third aspect of the present application is described below.
The electric equipment provided by the embodiment of the application can be equipment such as vehicles, energy storage electric cabinets and the like which take batteries as energy storage and storage components. The powered device may include: the battery thermal management system 100 in the above embodiment.
According to the electric equipment provided by the embodiment of the application, the battery thermal management system 100 is arranged, so that the comprehensive energy consumption is reduced, and the safety and stability are improved.
It should be noted that references in the specification to "one embodiment," "an example embodiment," "some embodiments," etc., indicate that the embodiment may include a particular feature, structure, or characteristic, but every embodiment may not necessarily include the particular feature, structure, or characteristic. Moreover, such phrases are not necessarily referring to the same embodiment. Furthermore, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the art to effect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.
Generally, terms should be understood at least in part by use in the context. For example, the term "one or more" as used herein may be used to describe any feature, structure, or characteristic in a singular sense, or may be used to describe a combination of features, structures, or characteristics in a plural sense, at least in part depending on the context. Similarly, terms such as "a" or "an" may also be understood to convey a singular usage or a plural usage, depending at least in part on the context.
It should be readily understood that the terms "on … …", "above … …" and "above … …" in this disclosure should be interpreted in the broadest sense such that "on … …" means not only "directly on something", but also includes "on something" with intermediate features or layers therebetween, and "above … …" or "above … …" includes not only the meaning "on something" or "above" but also the meaning "above something" or "above" without intermediate features or layers therebetween (i.e., directly on something).
Further, spatially relative terms, such as "below," "beneath," "above," "over," and the like, may be used herein for ease of description to describe one element or feature's relationship to another element or feature as illustrated. 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. The device may have other orientations (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein interpreted accordingly.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application.
Claims (10)
1. A battery thermal management system, comprising:
the main circulation loop comprises a battery water cooling plate, a first water pump, a heat exchanger and a pipeline heater, wherein the heat exchanger is provided with a first heat exchange flow channel and a second heat exchange flow channel, and the battery water cooling plate, the first water pump, the first heat exchange flow channel of the heat exchanger and the pipeline heater are sequentially communicated end to end through a first pipeline;
the refrigeration loop comprises a compressor, a condenser and a first regulating valve, wherein the compressor, the condenser, the first regulating valve and a second heat exchange flow passage of the heat exchanger are sequentially communicated end to end through a second pipeline;
the natural cooling branch comprises a second regulating valve and a natural cooling coil pipe, the second regulating valve and the natural cooling coil pipe are sequentially arranged on a third pipeline, and two ends of the third pipeline are respectively communicated with first pipelines positioned at two sides of the first heat exchange flow channel;
and the heat dissipation fan is arranged opposite to the condenser.
2. The battery thermal management system of claim 1, further comprising: and the safety valve is connected with the main circulation loop to release pressure for the battery thermal management system.
3. The battery thermal management system of claim 2, further comprising:
the fluid infusion branch comprises a fluid infusion water tank and a second water pump, one end of the second water pump is communicated with the fluid infusion water tank, and the other end of the second water pump is communicated with the main circulation loop.
4. The battery thermal management system of claim 3 wherein the make-up water tank is further in communication with the relief valve through a fourth line.
5. The battery thermal management system of claim 1, further comprising:
the air inlet end of the first exhaust valve is communicated with the first pipeline; and/or the number of the groups of groups,
and the air inlet end of the second exhaust valve is communicated with the third pipeline.
6. The battery thermal management system of claim 1, further comprising:
a dehumidification branch comprising: the third regulating valve and the dehumidifying heat exchanger are sequentially arranged on a fifth pipeline, one end of the fifth pipeline is communicated with a second pipeline between the second heat exchange flow channel and the compressor, and the other end of the fifth pipeline is communicated with a second pipeline between the second heat exchange flow channel and the first regulating valve;
the dehumidifying fan is arranged opposite to the dehumidifying heat exchanger.
7. A control method of a battery thermal management system, applied to the battery thermal management system according to any one of claims 1 to 6, characterized by comprising the steps of:
acquiring an ambient temperature;
determining a temperature range in which the ambient temperature is located, wherein the temperature range comprises a first preset temperature range, a second preset temperature range and a third temperature range;
according to the temperature range of the ambient temperature, controlling the battery thermal management system to operate in a corresponding working mode, wherein the working mode at least comprises: the device comprises a first working mode, a second working mode and a third working mode, wherein the first preset temperature range corresponds to the first working mode, the second preset temperature range corresponds to the second working mode, and the third preset temperature range corresponds to the third working mode.
8. The method according to claim 7, wherein the first preset temperature range is t.gtoreq.13 ℃, the second preset temperature range is-5 ℃ t.gtoreq.13 ℃, and the third preset temperature range is T < -5 ℃.
9. The method for controlling a battery thermal management system according to claim 7, wherein,
in the first working mode, the first water pump, the heat radiation fan and the compressor are controlled to be started, and the second regulating valve is controlled to be closed, wherein the compressor operates at a first set power;
in the second working mode, the first water pump, the heat radiation fan, the compressor and the second regulating valve are controlled to be started, wherein the compressor operates at a second set power, and the second set power is lower than the first set power;
and in the third working mode, the first water pump and the heat radiation fan are controlled to be started, the compressor is controlled to be closed, and the second regulating valve is controlled to be started.
10. The control method of a battery thermal management system according to claim 7, characterized in that the control method further comprises the steps of:
acquiring the water pressure of the battery thermal management system;
and when the water pressure exceeds the set water pressure, starting a pressure relief program.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311051058.4A CN116960527A (en) | 2023-08-18 | 2023-08-18 | Battery thermal management system and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311051058.4A CN116960527A (en) | 2023-08-18 | 2023-08-18 | Battery thermal management system and control method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116960527A true CN116960527A (en) | 2023-10-27 |
Family
ID=88447579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311051058.4A Pending CN116960527A (en) | 2023-08-18 | 2023-08-18 | Battery thermal management system and control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116960527A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118040164A (en) * | 2024-04-09 | 2024-05-14 | 亚普汽车部件股份有限公司 | Battery thermal management system, control method and energy storage equipment |
-
2023
- 2023-08-18 CN CN202311051058.4A patent/CN116960527A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118040164A (en) * | 2024-04-09 | 2024-05-14 | 亚普汽车部件股份有限公司 | Battery thermal management system, control method and energy storage equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111216515B (en) | Electric automobile thermal management system | |
| CN109895590B (en) | HVAC system for a vehicle | |
| CN207225022U (en) | A kind of new energy car battery heat management system | |
| CN112339614B (en) | Collaborative management method suitable for fuel cell automobile thermal system | |
| CN111129663B (en) | Vehicle-mounted thermal management system and vehicle | |
| CN116960527A (en) | Battery thermal management system and control method thereof | |
| CN111959224A (en) | Heat pump system and vehicle | |
| WO2022222102A1 (en) | Thermal management system, heating method and device, vehicle, and storage medium | |
| CN103129349A (en) | Electric vehicle air conditioner system | |
| CN114435075A (en) | Finished automobile thermal management system and method for pure electric commercial vehicle | |
| CN112820979A (en) | Power battery thermal management system and power battery thermal management control method | |
| KR102273464B1 (en) | Integrated thermal management circuit for vehicle | |
| WO2024066110A1 (en) | Thermal management system control method for hybrid vehicle, and hybrid vehicle | |
| CN109910543A (en) | A kind of vehicle heat management system and vehicle | |
| CN109910590A (en) | A kind of vehicle and its heat management system | |
| CN109910542B (en) | Vehicle and vehicle thermal management system | |
| CN106653291A (en) | System for performing forced circulating cooling on transformer through day and night temperature difference | |
| CN207790310U (en) | Vehicle and its heat management system | |
| CN212289436U (en) | Thermal management system and electric automobile | |
| CN212148306U (en) | Whole car thermal management system of integrated direct heat pump | |
| CN115489262A (en) | Indirect multi-level waste heat recovery heat pump air conditioning system and control method thereof | |
| WO2021052445A1 (en) | Thermal management system | |
| CN112297757B (en) | Electric automobile thermal management system with concentrated circulation of cooling liquid and application method thereof | |
| CN112046242A (en) | Thermal management system and electric automobile | |
| CN209418728U (en) | A kind of temperature of powered cell managing device and electrokinetic cell system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |