CN115402156A - Cold and hot balanced system of new energy automobile - Google Patents

Cold and hot balanced system of new energy automobile Download PDF

Info

Publication number
CN115402156A
CN115402156A CN202211266505.3A CN202211266505A CN115402156A CN 115402156 A CN115402156 A CN 115402156A CN 202211266505 A CN202211266505 A CN 202211266505A CN 115402156 A CN115402156 A CN 115402156A
Authority
CN
China
Prior art keywords
air
heating
heat exchanger
temperature
new energy
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
Application number
CN202211266505.3A
Other languages
Chinese (zh)
Inventor
郑丹庆
仇春伟
黄道德
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Ama & Hien Technology Co ltd
Original Assignee
Zhejiang Ama & Hien Technology Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Zhejiang Ama & Hien Technology Co ltd filed Critical Zhejiang Ama & Hien Technology Co ltd
Priority to CN202211266505.3A priority Critical patent/CN115402156A/en
Publication of CN115402156A publication Critical patent/CN115402156A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
    • B60L58/26—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00321—Heat exchangers for air-conditioning devices
    • B60H1/00328—Heat exchangers for air-conditioning devices of the liquid-air type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00357—Air-conditioning arrangements specially adapted for particular vehicles
    • B60H1/00385—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell
    • B60H1/00392—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell for electric vehicles having only electric drive means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
    • B60L58/27—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by heating
    • 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
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • 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
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K2001/003—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units
    • B60K2001/005—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units the electric storage means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K2001/008—Arrangement or mounting of electrical propulsion units with means for heating the electrical propulsion units
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Sustainable Energy (AREA)
  • Sustainable Development (AREA)
  • Transportation (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

The invention relates to the technical field of new energy automobiles, and provides a cold and heat balance system of a new energy automobile, which at least comprises: a heating and refrigerating unit; one end of the first air channel is communicated with the heating and refrigerating unit, the other end of the first air channel is suitable for being communicated with the battery pack bin, and the heating and refrigerating unit supplies air into the battery pack bin through the first air channel so as to adjust the temperature in the battery pack bin to be within a preset range; the input end of the charging interface is suitable for being connected with an external power supply, the output end of the charging interface comprises a first branch and a second branch, and the first branch is connected with the heating and refrigerating unit; the second branch is connected with a power battery in the battery pack bin. The system can maintain a proper temperature in the battery pack bin in both a low-temperature environment and a high-temperature environment so as to avoid irreversible damage to the battery during charging and reduce potential safety hazards; in addition, the charging interface adopts a shunting technology, so that the heating and cooling unit does not consume the electric energy of the battery during charging, and the charging speed and the capacity of the battery are ensured.

Description

Cold and hot balanced system of new energy automobile
Technical Field
The invention relates to the technical field of new energy automobiles, in particular to a cold and heat balance system of a new energy automobile.
Background
Due to the limitation of the service life of the battery and the endurance mileage of the electric automobile, the popularization of the electric automobile is still in the starting development stage at present. The main factor influencing the driving range of the electric vehicle is the battery performance, so on one hand, a battery for a large-capacity electric vehicle needs to be developed, on the other hand, the battery performance needs to be brought into full play, and the battery performance is obviously influenced by environmental factors. Taking a lithium ion power battery as an example of a power battery, generally, the service environment of the lithium ion battery pack is-30 ℃ to 55 ℃, for example, when the temperature is-30 ℃ to 10 ℃, the discharge capacity of the lithium ion battery is less than 50% of the standard value. The adverse effect of the environmental temperature on the battery is not only reflected in the discharging process of the battery, but also reflected in the charging process of the battery, and the irreversible damage of the lithium ion battery pack can be caused even the potential safety hazard is caused when the battery is charged at the overhigh or overlow environmental temperature.
Therefore, how to ensure that the battery is charged at a proper ambient temperature becomes a problem to be solved urgently.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is how to ensure that the battery is charged at a proper environmental temperature so as to avoid irreversible damage of the battery pack, thereby reducing potential safety hazards and providing a new energy automobile cold and heat balance system.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a cold and heat balance system of a new energy automobile at least comprises: a heating and cooling unit; one end of the first air channel is communicated with the heating and refrigerating unit, the other end of the first air channel is suitable for being communicated with the battery pack bin, and the heating and refrigerating unit supplies air to the battery pack bin through the first air channel so as to adjust the temperature in the battery pack bin to be within a preset range; the input end of the charging interface is suitable for being connected with an external power supply, the output end of the charging interface comprises a first branch and a second branch, the first branch is connected with the heating and refrigerating unit, and the charging interface is suitable for providing electric energy required by the heating and refrigerating unit in the operation process during charging; the second branch circuit is connected with the power battery in the battery pack bin and is suitable for providing electric energy required by the power battery during charging.
Furthermore, the cold and heat balance system of the new energy automobile further comprises a second air duct, one end of the second air duct is communicated with the heating and cooling unit, and the other end of the second air duct is suitable for being communicated with a cab; and the heating and refrigerating unit supplies air to the cab through the second air duct so as to adjust the temperature in the cab.
Further, the heating and cooling unit comprises: the compressor, the first heat exchanger, the throttling assembly and the second heat exchanger are sequentially arranged along the conveying direction of the refrigeration working medium; the compressor is suitable for providing a high-temperature and high-pressure refrigerating working medium; the first heat exchanger is suitable for being arranged in the air chamber to exchange heat with air in the air chamber, the air inlet of the first air channel and the air inlet of the second air channel are communicated with the air outlet of the air chamber, and the air outlet of the first air channel and the air outlet of the second air channel are communicated with the air inlet of the air chamber; the second heat exchanger is suitable for being arranged in an environment outside the vehicle to exchange heat with air outside the vehicle; the throttling component is suitable for changing the state of the refrigerating working medium between the first heat exchanger and the second heat exchanger.
Furthermore, the compressor is an air-supply enthalpy-increasing compressor, and the gas-phase refrigerant generated by the throttling assembly flows back into the compressor from an air supply port of the compressor.
Further, the throttling assembly comprises a first expansion valve, a flash evaporator and a second expansion valve; the flash evaporator is arranged on a pipeline between the first heat exchanger and the second heat exchanger, and a gas phase outlet of the flash evaporator is connected with an air supplementing port of the compressor; the first expansion valve is arranged on a pipeline between the first heat exchanger and the flash evaporator; the second expansion valve is arranged on a pipeline between the second heat exchanger and the flash evaporator.
Furthermore, the heating and refrigerating unit also comprises a first filter and a second filter; the first filter is arranged on a pipeline between the first expansion valve and the first heat exchanger; the second filter is disposed on a pipe between the second expansion valve and the second heat exchanger.
Furthermore, the heating and refrigerating unit also comprises a reversing valve; the first interface of the reversing valve is connected with the exhaust port of the compressor; the second interface of the reversing valve is connected with the air suction port of the compressor; a third interface of the reversing valve is connected with the first heat exchanger; and a fourth interface of the reversing valve is connected with the second heat exchanger.
Furthermore, the heating and refrigerating unit also comprises a first fan and a second fan; the first fan is arranged in the air chamber to accelerate the air in the air chamber to exchange heat with the first heat exchanger; the second fan is arranged in the environment outside the vehicle so as to accelerate the heat exchange between the air in the environment outside the vehicle and the second heat exchanger.
Furthermore, the heating and cooling unit also comprises a first air valve and a second air valve; the first air valve is arranged at an air inlet of the first air channel and is suitable for adjusting the air quantity conveyed to the battery pack bin; the second air valve is arranged at an air inlet of the second air channel and is suitable for adjusting the air quantity conveyed to the cab.
Furthermore, the heating and cooling unit also comprises a first temperature detector and a second temperature detector; the first temperature detector is arranged in the battery pack bin and is suitable for detecting the temperature value in the battery pack bin; the second temperature detector is arranged in the cab and is suitable for detecting a temperature value in the cab.
The technical scheme of the invention has the following advantages:
according to the cold and heat balance system of the new energy automobile, when the new energy automobile is charged, the charging interface can provide electric energy required by the power battery through the second branch, the heating and refrigerating unit is powered through the first branch to generate required cold energy or heat energy, and air is supplied to the battery pack bin through the first air duct to adjust the temperature in the battery pack bin to be within a preset range. By the arrangement, the battery pack bin can be kept at a proper temperature in a low-temperature environment or a high-temperature environment, so that irreversible damage to the battery during charging is avoided, and potential safety hazards are reduced; in addition, the charging interface adopts a shunting technology, so that the heating and cooling unit does not consume the electric energy of the battery during charging, and the charging speed and the capacity of the battery are ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic diagram of a cold-heat balance system of a new energy vehicle in an embodiment of the invention.
1. A charging interface; 2. A first branch; 3. A second branch;
4. a battery pack compartment; 5. A cab; 6. A first heat exchanger;
7. a second heat exchanger; 8. A first air duct; 9. A second air duct;
10. a first air valve; 11. A second air valve; 12. A first fan;
13. a second fan; 14. A diverter valve; 15. A compressor;
16. a first expansion valve; 17. A flash evaporator; 18. A second expansion valve;
19. an air chamber; 20. A first temperature sensor; 21. A second temperature sensor.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Fig. 1 is a schematic view of a cold-heat balance system of a new energy vehicle in an embodiment of the present invention, and as shown in fig. 1, the embodiment provides a cold-heat balance system of a new energy vehicle, which at least includes: a heating and refrigerating unit; a first air duct 8, one end of which is communicated with the heating and cooling unit, and the other end of which is suitable for being communicated with the battery pack bin 4, wherein the heating and cooling unit supplies air into the battery pack bin 4 through the first air duct 8 so as to adjust the temperature in the battery pack bin 4 to a preset range, wherein the preset range does not limit a certain temperature, and the temperature which can exert the optimal performance is different for different types of power batteries, so that the preset range is different for different power batteries; the charging interface 1 has an input end suitable for being connected with an external power supply, an output end comprising a first branch 2 and a second branch 3, and the first branch 2 is connected with the heating and refrigerating unit and suitable for providing electric energy required by the heating and refrigerating unit in the operation process during charging; the second branch 3 is connected with the power battery in the battery pack bin 4 and is suitable for providing electric energy required by the power battery during charging. The first branch 2 may be provided with a diode, and the second branch 3 may be provided with a diode and an intelligent inverter, so that power supply of the first branch 2 and power supply of the second branch 3 do not interfere with each other during charging.
The cold and hot balanced system of new energy automobile that this embodiment provided, during charging, charge interface 1 can provide the required electric energy of power battery through second branch road 3, for heating the refrigeration unit power supply through first branch road 2, make it produce required cold energy or heat energy to supply air in to group battery storehouse 4, with the temperature regulation in the group battery storehouse 4 to predetermineeing the within range through first wind channel 8. By the arrangement, a proper temperature can be maintained in the battery pack bin 4 in both a low-temperature environment and a high-temperature environment, so that irreversible damage is avoided when a battery is charged, and potential safety hazards are reduced; in addition, the charging interface 1 adopts a shunting technology, so that the heating and cooling unit does not consume the electric energy of the battery during charging, and the charging speed and the capacity of the battery are ensured.
The new energy automobile cold and heat balance system further comprises a second air duct 9, one end of the second air duct is communicated with the heating and refrigerating unit, and the other end of the second air duct is suitable for being communicated with the cab 5; the heating and cooling unit supplies air into the cab 5 through the second air duct 9 to adjust the temperature in the cab 5.
Wherein, heating and cooling unit includes: the compressor 15, the first heat exchanger 6, the throttling assembly and the second heat exchanger 7 are sequentially arranged along the conveying direction of the refrigerating working medium; the compressor 15 is adapted to provide a high-temperature and high-pressure refrigerant; the first heat exchanger 6 is suitable for being arranged in the air chamber 19 to exchange heat with air in the air chamber 19, the air inlet of the first air duct 8 and the air inlet of the second air duct 9 are both communicated with the air outlet of the air chamber 19, and the air outlet of the first air duct 8 and the air outlet of the second air duct 9 are both communicated with the air inlet of the air chamber 19; the second heat exchanger 7 is adapted to be arranged in an environment external to the vehicle, to exchange heat with air external to the vehicle; the throttling assembly is adapted to change the state of the refrigerant to and from between the first heat exchanger 6 and the second heat exchanger 7.
Preferably, the compressor 15 is an air-make and enthalpy-increase compressor 15, and the refrigerant in a gas phase state generated by the throttling assembly flows back into the compressor 15 from an air-make port of the compressor 15.
Wherein, the throttling component comprises a first expansion valve 16, a flash evaporator 17 and a second expansion valve 18; the flash evaporator 17 is arranged on a pipeline between the first heat exchanger 6 and the second heat exchanger 7, and a gas phase outlet of the flash evaporator 17 is connected with a gas supplementing port of the compressor 15; a first expansion valve 16 is arranged on a pipeline between the first heat exchanger 6 and the flash evaporator 17; a second expansion valve 18 is provided on the line between the second heat exchanger 7 and the flash evaporator 17.
The heating and refrigerating unit further comprises a first filter and a second filter; the first filter is provided on the line between the first expansion valve 16 and the first heat exchanger 6; the second filter is arranged in the line between the second expansion valve 18 and the second heat exchanger 7. Wherein, a liquid separation head can be arranged on a pipeline between the second filter and the second heat exchanger 7 for separating the liquid.
The heating and refrigerating unit also comprises a reversing valve 14; a first port of the reversing valve 14 is connected with an exhaust port of the compressor 15; the second port of the reversing valve 14 is connected with the suction port of the compressor 15; a third port of the reversing valve 14 is connected with the first heat exchanger 6; the fourth connection of the reversing valve 14 is connected to the second heat exchanger 7.
The heating and cooling unit further comprises a first fan 12 and a second fan 13; the first fan 12 is arranged in the air chamber 19 to accelerate the air in the air chamber 19 to exchange heat with the first heat exchanger 6; the second fan 13 is disposed in the environment outside the vehicle to accelerate heat exchange between the air in the environment outside the vehicle and the second heat exchanger 7.
The heating and cooling unit further comprises a first air valve 10 and a second air valve 11; the first air valve 10 is arranged at an air inlet of the first air duct 8 and is suitable for adjusting the air quantity conveyed to the battery pack bin 4; the second air valve 11 is arranged at the air inlet of the second air duct 9 and is suitable for adjusting the air volume delivered to the cab 5.
The heating and refrigerating unit further comprises a first temperature detector and a second temperature detector; the first temperature detector is arranged in the battery pack bin 4 and is suitable for detecting the temperature value in the battery pack bin 4; a second temperature detector is arranged in the cab 5 and is adapted to detect a temperature value in the cab 5. A third temperature sensor can be arranged on the first heat exchanger 6 to detect the temperature of the refrigerant flowing through the first heat exchanger 6. A fourth temperature sensor can be arranged on the second heat exchanger 7 to detect the temperature of the refrigerant flowing through the second heat exchanger 7.
Wherein, still should contain the required pipeline of each device of connection and the valve on the pipeline among the cold and hot balanced system of new energy automobile in this application, pipeline and valve all adopt conventional means to connect, and no longer give unnecessary details here.
The new energy automobile cold and heat balance system in the application comprises the following four application scenes:
first use scenario-charging in winter low temperature environment:
the compressor 15 is driven to operate by the electric energy branched from the second branch 3 of the charging interface 1, and at this time, the battery pack is completely disconnected from the heating and cooling system. The compressor 15 compresses the saturated low-temperature low-pressure gaseous refrigerant from the suction port and the saturated low-temperature medium-pressure gaseous refrigerant from the air supplement port into a high-temperature high-pressure gaseous refrigerant, the high-temperature high-pressure gaseous refrigerant is discharged from the exhaust port, the refrigerant enters the first heat exchanger 6 in the air chamber 19 through the reversing valve 14 to exchange heat with air in the air chamber 19, the air in the air chamber 19 is heated, and hot air in the air chamber 19 under the traction of the first fan 12 is rapidly conveyed into the battery pack bin 4 through the first air duct 8. The refrigeration working medium is condensed into a saturated medium-temperature high-pressure liquid refrigeration working medium in the first heat exchanger 6, when the refrigerant flows through the first filter, impurities remained in a refrigeration system are filtered, then the refrigerant is subjected to first throttling depressurization in the first expansion valve 16 and is changed into a medium-temperature medium-pressure liquid refrigeration working medium, after the medium-temperature medium-pressure liquid refrigeration working medium flows to the flash evaporator 17, the saturation pressure of the refrigeration working medium is reduced due to sudden increase of space, a large amount of heat is required to be absorbed at the moment that a part of the medium-temperature medium-pressure liquid refrigeration working medium enters the flash evaporator 17, the refrigerant boils into a saturated medium-temperature medium-pressure gas refrigeration working medium and enters the compressor 15 from an air supplement port of the compressor 15 for compression, and the other part of the medium-temperature medium-pressure liquid refrigeration working medium is subjected to heat release and then is condensed into a supercooled medium-temperature medium-pressure refrigeration working medium, and is changed into a low-pressure liquid refrigeration working medium after being subjected to second throttling depressurization by the second expansion valve 18. The low-temperature low-pressure liquid refrigerant exchanges heat with the air of the environment outside the vehicle, which is drawn by the second fan 13 to circulate, the heat in the absorbed air is evaporated into saturated low-temperature low-pressure gaseous refrigerant, the saturated low-temperature low-pressure gaseous refrigerant passes through the reversing valve 14 and enters the compressor 15 from the air suction port of the compressor 15 to be compressed, the saturated low-temperature low-pressure gaseous refrigerant from the air suction port and the saturated medium-temperature medium-pressure gaseous refrigerant from the air supplement port are compressed by the compressor 15 into high-temperature high-pressure gaseous refrigerant to be discharged from the air exhaust port, and the heat is continuously absorbed from the air of the environment outside the vehicle and the flash evaporator 17 to be transmitted to the battery pack bin 4 through the air chamber 19 in the reciprocating circulation.
Wherein, the second air valve 11 is always in a closed state; the opening degree of the first air valve 10 is judged according to the temperature in the battery pack bin 4 detected by the first temperature sensor 20, when the detected temperature is closer to the optimal temperature of the battery pack charging and discharging performance, the opening degree of the first air valve 10 is smaller, otherwise, the opening degree is larger; in this case, the heat absorbed by the heating and cooling unit only needs to be provided to the battery pack to maintain a good charging environment.
Second use scenario-charging in summer high temperature environment:
the compressor 15 is driven to operate by the electric energy branched from the second branch 3 of the charging interface 1, and at this time, the battery pack is completely disconnected from the heating and cooling system. The compressor 15 compresses the saturated low-temperature low-pressure gaseous refrigerant from the suction port and the saturated low-temperature medium-pressure gaseous refrigerant from the air supplement port into a high-temperature high-pressure gaseous refrigerant, the high-temperature high-pressure gaseous refrigerant is discharged from the exhaust port, the high-temperature high-pressure gaseous refrigerant passes through the reversing valve 14 and exchanges heat with air in the environment outside the vehicle in the second heat exchanger 7 in which the second fan 13 is used for drawing and circulating, and the heat is exchanged to the air outside the vehicle. The refrigerant is condensed into a saturated medium-temperature high-pressure liquid refrigerant in the second heat exchanger 7, when the refrigerant flows through the second filter, impurities remained in the refrigeration system are filtered, then the refrigerant is subjected to first throttling depressurization in the second expansion valve 18 and is changed into a medium-temperature medium-pressure liquid refrigerant, after the medium-temperature medium-pressure refrigerant flows to the flash evaporator 17, the saturation pressure of the refrigerant is reduced due to sudden increase of space, a part of the medium-temperature medium-pressure liquid refrigerant needs to absorb a large amount of heat at the moment of entering the flash evaporator 17, the gaseous refrigerant which is boiled into the saturated medium-temperature medium-pressure refrigerant enters the compressor 15 from the air supplement port of the compressor 15 for compression, the other part of the medium-temperature medium-pressure liquid refrigerant is condensed into a supercooled medium-temperature medium-pressure refrigerant after heat release, and is changed into a low-pressure low-temperature liquid refrigerant after the second throttling depressurization by the first expansion valve 16. The low-temperature low-pressure liquid refrigerant exchanges heat in the first heat exchanger 6 to cool air in the air chamber 19, and the air is drawn by the first fan 12 to enter the battery pack bin 4 through the first air duct 8. The low-temperature low-pressure liquid refrigerant absorbing the heat of the air in the air chamber 19 is evaporated into a saturated low-temperature low-pressure gaseous refrigerant, the saturated low-temperature low-pressure gaseous refrigerant enters the compressor 15 from the air suction port of the compressor 15 through the reversing valve 14 and is compressed, the saturated low-temperature low-pressure gaseous refrigerant from the air suction port and the saturated medium-temperature medium-pressure gaseous refrigerant from the air supplement port are compressed into a high-temperature high-pressure gaseous refrigerant by the compressor 15 and are discharged from the air exhaust port, and the refrigerant circulates in a reciprocating manner to continuously absorb the heat from the air in the air chamber 19 and the flash evaporator 17 and is discharged to the environment outside the vehicle through the second fan 13 and the second heat exchanger 7.
Wherein, the second air valve 11 is always in a closed state; the opening degree of the first air valve 10 is judged according to the temperature in the battery pack bin 4 detected by the first temperature sensor 20, when the detected temperature is closer to the optimal temperature of the battery pack charging and discharging performance, the opening degree of the first air valve 10 is smaller, otherwise, the opening degree is larger; in this case, the heat absorbed by the heating and cooling unit only needs to be provided to the battery pack to maintain a good charging environment.
A third use scenario-winter low temperature vehicle non-charging state:
this usage scenario differs from the first usage scenario in that the compressor 15 is driven by the power battery and both the first air valve 10 and the second air valve 11 are open.
The opening degree of the second air flap 11 is determined by the temperature in the cab 5 detected by the second temperature sensor 21, and when the detected temperature is closer to the set temperature of the cab 5, the opening degree of the second air flap 11 is smaller, and vice versa, so as to reasonably distribute and use the air heated in the air compartment 19.
A fourth usage scenario-in summer high temperature vehicle non-charging state:
this usage scenario differs from the second usage scenario in that the compressor 15 is driven by the power battery and both the first air valve 10 and the second air valve 11 are open.
The opening degree of the second air valve 11 is determined by the temperature in the cab 5 detected by the second temperature sensor 21, and the opening degree of the second air valve 11 is smaller when the detected temperature is closer to the set temperature of the cab 5, and is larger when the detected temperature is opposite to the set temperature of the cab 5, so that the air with the temperature reduced in the air chamber 19 can be reasonably distributed and used.
In conclusion, compared with the conventional new energy automobile air conditioning system, the new energy automobile cold and heat balance system with the flash evaporator 17 has qualitative breakthrough in low-temperature heating performance, can realize stable heat supply at low ambient temperature of more than 30 ℃ below zero, has more than 50% of energy-saving effect compared with electric heating, can greatly improve the driving experience of a driver and the endurance of a battery, and is favorable for promoting the application and popularization of new energy automobiles in cold climate areas.
The new energy automobile cold and hot balanced system in this application carries on flash vessel 17's tonifying qi and increases enthalpy system, compares with present conventional new energy automobile air conditioning system, has more superior environmental suitability and better energy-conserving effect when high temperature refrigeration.
The cold and hot balanced system of new energy automobile in this application, the reposition of redundant personnel technique of charging can make new energy automobile can both have the optimum environment of charging under high low temperature environment, ensures the speed of charging and the capacity of battery.
The new energy automobile cold and heat balance system can reduce the risk of traffic accidents such as fire disasters caused by heating and temperature rising of the battery pack of the new energy automobile at high ambient temperature; the problem of poor endurance caused by energy attenuation caused by low temperature of the new energy automobile battery pack is solved; the charging speed and the charging capacity of the new energy automobile at low temperature are improved; the problem of the life cycle attenuation of the new energy automobile caused by low electric auxiliary heat efficiency and high power consumption when the electric auxiliary heat is adopted to heat the cab in winter is solved; CO adopted for replacing new energy automobile 2 The method for adjusting the indoor temperature by the air-conditioning heat pump system greatly reduces the manufacturing cost of the new energy automobile.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.

Claims (10)

1. The utility model provides a new energy automobile cold and hot balanced system which characterized in that includes at least:
a heating and cooling unit;
one end of the first air channel is communicated with the heating and refrigerating unit, the other end of the first air channel is suitable for being communicated with the battery pack bin, and the heating and refrigerating unit supplies air to the battery pack bin through the first air channel so as to adjust the temperature in the battery pack bin to be within a preset range;
the input end of the charging interface is suitable for being connected with an external power supply, the output end of the charging interface comprises a first branch and a second branch, the first branch is connected with the heating and refrigerating unit, and the charging interface is suitable for providing electric energy required by the heating and refrigerating unit in the operation process during charging; the second branch circuit is connected with the power battery in the battery pack bin and is suitable for providing electric energy required by the power battery during charging.
2. The cold and heat balance system of the new energy automobile according to claim 1,
the air conditioner also comprises a second air duct, one end of the second air duct is communicated with the heating and refrigerating unit, and the other end of the second air duct is suitable for being communicated with a cab;
and the heating and cooling unit supplies air to the cab through the second air duct so as to adjust the temperature in the cab.
3. The cold and heat balance system of the new energy automobile according to claim 2,
the heating and refrigerating unit comprises:
the compressor, the first heat exchanger, the throttling assembly and the second heat exchanger are sequentially arranged along the conveying direction of the refrigeration working medium;
the compressor is suitable for providing a high-temperature and high-pressure refrigerating working medium;
the first heat exchanger is suitable for being arranged in the air chamber to exchange heat with air in the air chamber, the air inlet of the first air channel and the air inlet of the second air channel are communicated with the air outlet of the air chamber, and the air outlet of the first air channel and the air outlet of the second air channel are communicated with the air inlet of the air chamber;
the second heat exchanger is suitable for being arranged in an environment outside the vehicle to exchange heat with air outside the vehicle;
the throttling component is suitable for changing the state of the refrigeration working medium between the first heat exchanger and the second heat exchanger.
4. The cold and heat balance system of the new energy automobile according to claim 3,
the compressor is an air-supplying enthalpy-increasing compressor, and the refrigerant in a gas phase state generated by the throttling component flows back into the compressor from an air-supplying port of the compressor.
5. The cold-heat balance system of the new energy automobile as claimed in claim 4,
the throttling component comprises a first expansion valve, a flash evaporator and a second expansion valve;
the flash evaporator is arranged on a pipeline between the first heat exchanger and the second heat exchanger, and a gas phase outlet of the flash evaporator is connected with an air supplementing port of the compressor;
the first expansion valve is arranged on a pipeline between the first heat exchanger and the flash evaporator;
the second expansion valve is arranged on a pipeline between the second heat exchanger and the flash evaporator.
6. The cold-heat balance system of the new energy automobile as claimed in claim 5,
the heating and refrigerating unit also comprises a first filter and a second filter;
the first filter is arranged on a pipeline between the first expansion valve and the first heat exchanger;
the second filter is disposed on a pipe between the second expansion valve and the second heat exchanger.
7. The cold-heat balance system of the new energy automobile according to any one of claims 3-6,
the heating and refrigerating unit also comprises a reversing valve;
the first interface of the reversing valve is connected with the exhaust port of the compressor;
the second interface of the reversing valve is connected with the air suction port of the compressor;
a third interface of the reversing valve is connected with the first heat exchanger;
and a fourth interface of the reversing valve is connected with the second heat exchanger.
8. The cold and heat balance system of the new energy automobile according to claim 3,
the heating and refrigerating unit also comprises a first fan and a second fan;
the first fan is arranged in the air chamber to accelerate the air in the air chamber to exchange heat with the first heat exchanger;
the second fan is arranged in the environment outside the vehicle so as to accelerate the heat exchange between the air in the environment outside the vehicle and the second heat exchanger.
9. The cold and heat balance system of the new energy automobile according to claim 2,
the heating and refrigerating unit also comprises a first air valve and a second air valve;
the first air valve is arranged at an air inlet of the first air channel and is suitable for adjusting the air quantity conveyed to the battery pack bin;
the second air valve is arranged at an air inlet of the second air channel and is suitable for adjusting the air quantity conveyed to the cab.
10. The cold-heat balance system of the new energy automobile as claimed in claim 2,
the heating and refrigerating unit also comprises a first temperature detector and a second temperature detector;
the first temperature detector is arranged in the battery pack bin and is suitable for detecting the temperature value in the battery pack bin;
the second temperature detector is arranged in the cab and is suitable for detecting the temperature value in the cab.
CN202211266505.3A 2022-10-17 2022-10-17 Cold and hot balanced system of new energy automobile Pending CN115402156A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211266505.3A CN115402156A (en) 2022-10-17 2022-10-17 Cold and hot balanced system of new energy automobile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211266505.3A CN115402156A (en) 2022-10-17 2022-10-17 Cold and hot balanced system of new energy automobile

Publications (1)

Publication Number Publication Date
CN115402156A true CN115402156A (en) 2022-11-29

Family

ID=84167642

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211266505.3A Pending CN115402156A (en) 2022-10-17 2022-10-17 Cold and hot balanced system of new energy automobile

Country Status (1)

Country Link
CN (1) CN115402156A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117325610A (en) * 2023-08-24 2024-01-02 北京新能源汽车股份有限公司 Thermal management system for vehicle and control method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117325610A (en) * 2023-08-24 2024-01-02 北京新能源汽车股份有限公司 Thermal management system for vehicle and control method thereof

Similar Documents

Publication Publication Date Title
CN208714895U (en) A kind of pump type heat coach air conditioner of the integrated battery heat management using R410a refrigerant
CN115416444A (en) Heat pump heat management system for new energy automobile and working method of heat pump heat management system
CN208797144U (en) A liquid cooling system for electric vehicle battery coupled with air-cooled air conditioner
CN114940046B (en) Heat pump air conditioning system integrating waste heat recovery function and control method
CN113619355B (en) Electric vehicle heat management system and method based on transcritical carbon dioxide heat pump air conditioner
CN114801645A (en) Hydrogen energy automobile frostless heat pump system without PTC heater and heat management method
CN111267578A (en) Battery thermal management system
CN215284264U (en) Electric motor coach and air conditioning system thereof
CN109649114B (en) A new energy bus split air conditioning system
CN108317766A (en) A kind of air-conditioning system and electric bus of electric bus
CN115782519A (en) Thermal management system and method for electric commercial vehicle
WO2024067854A1 (en) Control method and vehicle
CN108583204A (en) A kind of CO2Air conditioner heat pump system
CN118182076A (en) An integrated thermal management system for pure electric commercial vehicles based on heat pumps
CN114523880B (en) Battery pack secondary refrigerant direct heat exchange thermal management system
CN111251805A (en) Vehicle, thermal management system of vehicle and control method of thermal management system
CN209111895U (en) Integrated heat management system
CN212848573U (en) Power battery water cooling system
Wang et al. Energy consumption analysis and performance evaluation of electric vehicle integrated thermal management system experiments
CN218381635U (en) Energy-saving new forms of energy battery package high low temperature test system
CN115402156A (en) Cold and hot balanced system of new energy automobile
CN116605005A (en) A thermal management system for a vehicle and a vehicle
CN112092570A (en) Battery management system and new energy automobile with same
CN113771583B (en) Heat pump air conditioning system with intermediate heat exchanger for integrated power battery thermal management
CN214240499U (en) Built-in air conditioner integrated battery thermal management system for miniature electric bus

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