CN110661056A - Battery thermal management system of vehicle and vehicle - Google Patents
Battery thermal management system of vehicle and vehicle Download PDFInfo
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- CN110661056A CN110661056A CN201810697760.0A CN201810697760A CN110661056A CN 110661056 A CN110661056 A CN 110661056A CN 201810697760 A CN201810697760 A CN 201810697760A CN 110661056 A CN110661056 A CN 110661056A
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- 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
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- 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
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- 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
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- 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
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- 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
- H01M10/6551—Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings
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- 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
- H01M10/6555—Rods or plates arranged between the cells
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- 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
- H01M10/6557—Solid parts with flow channel passages or pipes for heat exchange arranged between the cells
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- 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
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- 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
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- 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
- H01M10/657—Means for temperature control structurally associated with the cells by electric or electromagnetic means
- H01M10/6571—Resistive heaters
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- 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
- H01M10/66—Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells
- H01M10/663—Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells the system being an air-conditioner or an engine
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Automation & Control Theory (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The invention discloses a vehicle battery thermal management system and a vehicle, wherein the vehicle battery thermal management system comprises: air conditioner circulating system and battery package heat transfer system, battery package heat transfer system includes: the air conditioner circulating system selectively provides cold or heat for the heat exchanger, the heater, the pump body and the battery pack heat exchange piece are communicated, the battery pack heat exchange piece is arranged on the battery pack, the heater, the pump body and the temperature sensor are electrically connected with the controller, and the controller selectively controls the heater to work according to a temperature detection result of the temperature sensor. Therefore, the air conditioner circulation system is matched with the heat exchange system of the battery pack, so that the problems of overheating and supercooling of the battery pack can be effectively solved, and the battery pack can be ensured to normally work under any working condition.
Description
Technical Field
The invention relates to the technical field of vehicles, in particular to a battery thermal management system of a vehicle and the vehicle with the battery thermal management system of the vehicle.
Background
CN203727131U discloses a new energy automobile thermal management system, which includes: the system comprises a motor cooling system, a heat pump air conditioning system and a battery cooling system; a first liquid-to-liquid heat exchanger and a second liquid-to-liquid heat exchanger; the first liquid-liquid heat exchanger is connected between the motor cooling system and the heat pump air conditioning system, and the second liquid-liquid heat exchanger is connected between the heat pump air conditioning system and the battery cooling system; the heat pump air-conditioning system comprises a condenser, a compressor, an evaporator and a four-way valve; when the four-way valve is in a heating gear, the first liquid-liquid heat exchanger and the condenser are connected to a heating inlet of the compressor, and a heating outlet of the first liquid-liquid heat exchanger is connected to the evaporator and the second liquid-liquid heat exchanger; when the four-way valve is in a refrigeration gear, the second liquid-liquid heat exchanger and the evaporator are connected to a refrigeration inlet of the compressor, and a refrigeration outlet of the second liquid-liquid heat exchanger is connected to the condenser and the first liquid-liquid heat exchanger.
This solution mainly has the following drawbacks:
(1) during the refrigeration, the compressor comes out for high temperature gaseous state refrigerant, and motor cooling system is equivalent to the heating, lacks temperature control, has overheated problem, and when refrigerating the battery package, the water pump drives coolant liquid in the radiator and the second liquid heat exchanger coolant liquid can and get into battery box and reduce cooling efficiency simultaneously.
(2) When heating, the compressor enters the second liquid-liquid heat exchanger to be merged with the cooling liquid of the battery radiator, so that the heating efficiency of the battery is reduced, the supercooling risk exists when the compressor exchanges with the cooling liquid of the first liquid-liquid heat exchanger, and if the heat dissipation capacity of the motor and the controller is insufficient, the motor can be supercooled.
(3) The above system has various parallel connection and valve bodies, the control logic is troublesome, and once control errors occur, the problems of overheating or supercooling can be caused.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a vehicle battery thermal management system which can effectively solve the problems of overheating and overcooling of a battery pack and can ensure that the battery pack can normally work under any working condition.
The invention further provides a vehicle.
The battery thermal management system of a vehicle according to the present invention includes: air conditioner circulating system and battery package heat transfer system, battery package heat transfer system includes: the air conditioner circulating system selectively provides cold or heat for the heat exchanger, the heater, the pump body and the battery pack heat exchange piece are communicated, the battery pack heat exchange piece is arranged on the battery pack, the heater, the pump body and the temperature sensor are electrically connected with the controller, and the controller selectively controls the heater to work according to a temperature detection result of the temperature sensor.
According to the vehicle battery thermal management system, the air conditioner circulation system is matched with the battery pack heat exchange system, so that the problems of overheating and overcooling of the battery pack can be effectively solved, and the battery pack can be guaranteed to normally work under any working condition.
In some embodiments of the invention, the heat exchanger comprises: a first flow passage and a second flow passage, the air conditioning cycle system including: the condenser comprises a compressor, a condenser, a throttling element and a first flow passage, wherein the first flow passage, the compressor, the condenser and the throttling element are communicated; the heater, the pump body, the battery pack heat exchange member and the second flow passage are communicated.
In some embodiments of the present invention, when the temperature sensor detects that the temperature of the battery pack is higher than a first predetermined value, the outlet of the compressor sequentially passes a refrigerant through the condenser, the throttling element and the first flow channel, the first flow channel exchanges heat with the second flow channel, and the pump body drives the cooling liquid at the second flow channel to flow to the battery pack heat exchanging element to cool the battery pack.
In some embodiments of the invention, when the temperature sensor detects that the temperature of the battery pack is lower than a second predetermined value, the outlet of the compressor sequentially passes a refrigerant through the first flow channel, the throttling element and the condenser, the first flow channel exchanges heat with the second flow channel, and the pump body drives the cooling liquid at the second flow channel to flow to the battery pack heat exchange element to heat the battery pack.
In some embodiments of the invention, the heater is operated when the battery pack does not rise from the second predetermined value to the third predetermined value within the first predetermined time.
In some embodiments of the present invention, the air conditioning cycle system includes: the heat exchanger comprises a compressor, a condenser and an evaporator, wherein the evaporator, the compressor and the condenser are communicated, and the evaporator selectively provides cold energy for the heat exchanger.
In some embodiments of the invention, the evaporator is disposed adjacent to the heat exchanger.
In some embodiments of the present invention, when the temperature sensor detects that the temperature of the battery pack is higher than a first predetermined value, the outlet of the compressor sequentially passes a refrigerant through the condenser and the evaporator, and the pump body drives the cooling liquid of the heat exchanger to flow to the battery pack heat exchanging element at a first rate, so as to cool the battery pack.
In some embodiments of the invention, the pump body is ramped from the first rate to the second rate when the battery pack is charging and discharging or when the local temperature is above a fourth predetermined value, the fourth predetermined value being above the first predetermined value.
In some embodiments of the present invention, the temperature sensor is disposed inside the battery pack, the temperature sensor is multiple, and the temperature sensors are disposed outside the battery pack and spaced apart from each other.
In some embodiments of the present invention, the battery pack heat exchanger is a heat exchange plate, and the battery pack includes: and the heat exchange plate is attached to the battery module.
In some embodiments of the present invention, the battery pack heat exchanger is a heat exchange tube which is arranged in a serpentine manner inside the battery pack, and the battery pack includes: the heat exchange tube is attached to the battery module.
In some embodiments of the invention, the pump body is an electric water pump and the heater is a PTC heater.
The vehicle comprises the battery thermal management system of the vehicle.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic diagram of a battery thermal management system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of another embodiment of a battery thermal management system according to an embodiment of the present invention;
fig. 3 is a temperature control schematic of a battery thermal management system according to an embodiment of the present invention.
Reference numerals:
a battery thermal management system 10;
an air conditioning cycle system 1; a compressor 11; a condenser 12; a throttling element 13; a heat exchanger 14; a four-way valve 15; an oil separator 16; a liquid storage tank 17; an evaporator 18;
a battery pack heat exchange system 2; a heater 21; a pump body 22; a controller 23; a temperature sensor 24;
and a battery pack 20.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
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.
A battery thermal management system 10 of a vehicle according to an embodiment of the present invention is described in detail below with reference to fig. 1 to 3.
As shown in fig. 1 to 3, a battery thermal management system 10 according to an embodiment of the present invention includes: an air conditioning cycle system 1 and a battery pack heat exchange system 2.
The battery pack heat exchange system 2 may include: the air conditioning cycle system comprises a heat exchanger 14, a heater 21, a pump body 22, a controller 23, a temperature sensor 24 and a battery pack heat exchange piece (not shown in the figure), wherein the air conditioning cycle system 1 selectively provides cold or heat for the heat exchanger 14, the heater 21, the pump body 22 and the battery pack heat exchange piece are communicated, the battery pack heat exchange piece is arranged on a battery pack 20, the heater 21, the pump body 22 and the temperature sensor 24 are all electrically connected with the controller 23, and the controller 23 selectively controls the heater 21 to work according to the temperature detection result of the temperature sensor 24.
Alternatively, as shown in fig. 1, the heat exchanger 14 may include: the air conditioning cycle system 1 may include: the compressor 11, the condenser 12, the throttling element 13 and the first flow passage can be arranged inside the heat exchanger 14, the first flow passage, the compressor 11, the condenser 12 and the throttling element 13 are communicated, and the heater 21, the pump body 22, the battery pack heat exchange piece and the second flow passage are communicated. In addition, the air conditioning cycle system 1 may further include: the four-way valve 15, the oil separator 16 and the liquid storage tank 17 are communicated, and the four-way valve 15, the oil separator 16, the liquid storage tank 17, the first flow passage, the compressor 11, the condenser 12 and the throttling element 13 are communicated.
Further, when the temperature sensor 24 detects that the temperature of the battery pack 20 is higher than a first predetermined value, the outlet of the compressor 11 sequentially passes through the condenser 12, the throttling element 13 and the first flow channel, and then the first flow channel exchanges heat with the second flow channel, which can also be understood as that the refrigerant in the battery pack heat exchange system 2 is cooled in the heat exchanger 14, the pump body 22 drives the refrigerant at the second flow channel to flow to the battery pack heat exchange member, and then the battery pack heat exchange member can cool the battery pack 20.
Specifically, when the temperature sensor 24 detects that the temperature of the battery pack 20 is lower than the second predetermined value, the outlet of the compressor 11 sequentially passes through the first flow channel, the throttling element 13 and the condenser 12, and then the first flow channel exchanges heat with the second flow channel, which can also be understood as heating the refrigerant in the battery pack heat exchange system 2 in the heat exchanger 14, then the pump body 22 drives the cooling liquid at the second flow channel to flow to the battery pack heat exchange piece, and then the battery pack heat exchange piece heats the battery pack 20.
Optionally, when the battery pack 20 is not increased from the second predetermined value to the third predetermined value within the first predetermined time, the heater 21 operates, it should be noted that, when the heating efficiency is insufficient, the heater 21 may be used to heat the cooling medium, so that the temperature of the cooling medium is increased, and the heating efficiency of the battery pack 20 may be improved, meanwhile, when the temperature of the battery pack 20 is too high or too low, the temperature sensor 24 collects the temperature of the battery pack 20, and after the temperature sensor 24 detects the temperature of the battery pack 20, a signal is transmitted to the controller 23, so that the controller 23 controls the rotation speed of the water pump and the heating power of the heater 21, so that the temperature of the cooling medium meets the working requirement, so that the battery thermal management system 10 may be more intelligent, and the temperature distribution of the cooling medium may be more even.
Therefore, through the cooperation of the air conditioner circulating system 1 and the battery pack heat exchange system 2, the problems of overheating and supercooling of the battery pack 20 can be effectively solved, and the battery pack 20 can be guaranteed to normally work under any working condition.
According to another embodiment of the present invention, as shown in fig. 2, the air conditioning cycle system 1 may include: a compressor 11, a condenser 12 and an evaporator 18, the compressor 11 and the condenser 12 being in communication, the evaporator 18 selectively providing cooling to the heat exchanger 14.
The heat exchanger 14 can be an air-cooled plate heat exchanger 14, the air-cooled plate heat exchanger 14 is provided with fins, the contact area between the heat exchanger 14 and air can be increased, the air-cooled plate heat exchanger 14 can be provided with a refrigerant, the refrigerant can be cooling liquid, air can pass through the evaporator 18 through an air blower, the air can exchange heat with low-temperature liquid refrigerant in the evaporator 18 to be changed into low-temperature cold air, and then the cooling liquid exchanges heat with the cold air in the air-cooled plate heat exchanger 14, so that the cooling liquid can be cooled forcibly.
Further, the evaporator 18 and the heat exchanger 14 can be arranged in a manner of being attached to each other, so that the heat exchanger 14 can be in close contact with the evaporator 18, the heat exchange effect between the heat exchanger 14 and the evaporator 18 can be improved, and the heat exchange efficiency of the battery thermal management system 10 can be further improved.
Specifically, when the temperature sensor 24 detects that the temperature of the battery pack 20 is higher than a first predetermined value, the outlet of the compressor 11 sequentially passes the refrigerant through the condenser 12 and the evaporator 18, then the evaporator 18 exchanges heat with the heat exchanger 14, the pump body 22 drives the cooling liquid in the heat exchanger 14 to flow to the battery pack heat exchanger at a first rate, and the cooling liquid can cool the battery pack 20 in the battery pack heat exchanger.
Further, when the battery pack 20 is charged or discharged, or when the local temperature of the battery pack 20 is higher than a fourth predetermined value, the pump body 22 is increased from the first rate to the second rate, and the fourth predetermined value is higher than the first predetermined value. It should be explained that, when the battery pack 20 is charged and discharged at a high rate or is in a local over-temperature state, after the controller 24 receives a temperature signal, the controller 24 sends an instruction to the pump body 22 to increase the rotating speed of the pump body 22, so that the flow rate of the cooling liquid in the battery pack heat exchange system 2 can be increased, the heat of the battery pack 20 can be taken away quickly, and the local overheating of the battery pack 20 can be avoided.
Optionally, the heater 21 is disposed between the second flow channel and the pump body 22, so that the arrangement position of the heater 21 is more reasonable, and the refrigerant can be heated before flowing through the pump body 22, thereby ensuring the working temperature of the refrigerant and further improving the working reliability of the battery thermal management system 10.
Further, temperature sensor 24 sets up inside battery package 20, so set up and to make temperature sensor 24 detect out the temperature of battery package 20 better, can make the temperature value that detects out more accurate to can promote the working property of battery thermal management system 10.
Specifically, temperature sensor 24 can set up to a plurality of, and a plurality of temperature sensor 24 set up in the outside of battery package 20, and a plurality of temperature sensor 24 are spaced apart to be set up moreover, and the setting enables a plurality of temperature sensor 24 and detects out the temperature value of battery package 20 different regions simultaneously, can further make the temperature value that detects out more accurate to can further promote battery thermal management system 10's working property.
Alternatively, the battery pack heat exchanger may be provided as a heat exchange plate, and the battery pack 20 may include: the battery module, heat transfer board and battery module paste and lean on the setting, so set up and to shorten the distance between heat transfer board and the battery module, can promote the heat exchange efficiency of heat transfer board and battery module to can heat and cool down battery package 20 better, and then can solve battery package 20 problem overheated and undercooling better.
Further, press from both sides between two adjacent battery modules and establish a heat transfer board, set up like this and to make a heat transfer board paste with two battery modules simultaneously and lean on together, can make a heat transfer board carry out the heat exchange with two battery modules simultaneously to can promote the work efficiency of heat transfer board.
Specifically, the battery pack heat exchanger may also be provided as a heat exchange tube, the heat exchange tube being arranged to meander within the battery pack 20, and the battery pack 20 may include: the battery module, the heat exchange tube pastes to paste with the battery module and sets up. Wherein, the heat exchange tube meanders to set up and indicates that the heat exchange tube is the setting of buckling in battery package 20, and the heat exchange tube is not sharp setting, and the heat exchange efficiency of heat exchange tube is good, so set up the area of contact that can increase heat exchange tube and battery module, can further promote battery package heat transfer spare and battery package 20's heat exchange efficiency to can control battery package 20's temperature better.
Optionally, press from both sides between two adjacent battery modules and establish a heat exchange tube that meanders and set up like this and to make a heat exchange tube lean on together with two battery modules simultaneously, can make a heat exchange tube carry out the heat exchange with two battery modules simultaneously to can promote the work efficiency of heat exchange tube.
Further, the pump body 22 can be set up to the electronic water pump, and the operational reliability of electronic water pump is good, is difficult to damage, so set up the working property that can promote the pump body 22. Moreover, the heater 21 may be a PTC (positive temperature Coefficient) heater 21, the PTC heater 21 has a fast heating speed, which can increase the heating rate of the heater 21, and the PTC heater 21 is durable and non-oxidizing, so as to prolong the service life of the heater 21.
According to the vehicle provided by the embodiment of the invention, the battery thermal management system 10 comprises the battery thermal management system 10 provided by the embodiment, the battery thermal management system 10 is arranged and installed on the vehicle, the battery thermal management system 10 can effectively solve the problems of overheating and overcooling of the battery pack 20, and the battery pack 20 can be ensured to normally work under any working condition, so that the vehicle can be ensured to normally run.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (14)
1. A battery thermal management system for a vehicle, comprising:
an air conditioning circulation system;
battery package heat transfer system, battery package heat transfer system includes: the air conditioner circulating system selectively provides cold or heat for the heat exchanger, the heater, the pump body and the battery pack heat exchange piece are communicated, the battery pack heat exchange piece is arranged on the battery pack, the heater, the pump body and the temperature sensor are electrically connected with the controller, and the controller selectively controls the heater to work according to a temperature detection result of the temperature sensor.
2. The vehicle battery thermal management system of claim 1, wherein the heat exchanger comprises: a first flow passage and a second flow passage, the air conditioning cycle system including: the condenser comprises a compressor, a condenser, a throttling element and a first flow passage, wherein the first flow passage, the compressor, the condenser and the throttling element are communicated;
the heater, the pump body, the battery pack heat exchange member and the second flow passage are communicated.
3. The vehicle battery thermal management system according to claim 2, wherein when the temperature sensor detects that the temperature of the battery pack is higher than a first predetermined value, an outlet of the compressor sequentially passes a refrigerant through the condenser, the throttling element and the first flow channel, the first flow channel exchanges heat with the second flow channel, and the pump body drives the coolant in the second flow channel to flow to the battery pack heat exchange element to cool the battery pack.
4. The vehicle battery thermal management system according to claim 3, wherein when the temperature sensor detects that the temperature of the battery pack is lower than a second predetermined value, an outlet of the compressor sequentially passes a refrigerant through the first flow channel, the throttling element and the condenser, the first flow channel exchanges heat with the second flow channel, and the pump body drives the coolant in the second flow channel to flow to the battery pack heat exchange element to heat the battery pack.
5. The vehicle battery thermal management system of claim 4, wherein the heater is activated when the battery pack has not risen from the second predetermined value to the third predetermined value within a first predetermined time.
6. The vehicle battery thermal management system of claim 1, wherein the air conditioning cycle system comprises: the heat exchanger comprises a compressor, a condenser and an evaporator, wherein the evaporator, the compressor and the condenser are communicated, and the evaporator selectively provides cold energy for the heat exchanger.
7. The vehicle battery thermal management system of claim 6, wherein the evaporator is disposed against the heat exchanger.
8. The vehicle battery thermal management system according to claim 6, wherein when the temperature sensor detects that the temperature of the battery pack is higher than a first predetermined value, an outlet of the compressor sequentially passes a refrigerant through the condenser and the evaporator, and the pump body drives the coolant of the heat exchanger to flow to the battery pack heat exchange member at a first rate to cool the battery pack.
9. The vehicle battery thermal management system of claim 8, wherein the pump body is ramped from the first rate to a second rate when the battery pack is charged and discharged or when the local temperature is above a fourth predetermined value, the fourth predetermined value being above the first predetermined value.
10. The vehicle battery thermal management system of claim 1, wherein the plurality of temperature sensors are disposed inside the battery pack, and the plurality of temperature sensors are disposed outside the battery pack at intervals.
11. The vehicle battery thermal management system of claim 1, wherein the battery pack heat exchanger is a heat exchanger plate, the battery pack comprising: and the heat exchange plate is attached to the battery module.
12. The vehicle battery thermal management system of claim 1, wherein the battery pack heat exchanger is a heat exchange tube that meanders within the battery pack, the battery pack comprising: the heat exchange tube is attached to the battery module.
13. The vehicle battery thermal management system of claim 1, wherein the pump body is an electric water pump and the heater is a PTC heater.
14. A vehicle characterized by comprising a battery thermal management system of a vehicle according to any of claims 1-13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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