WO2023281304A1 - Système de gestion thermique de batterie pour véhicules électriques et procédé de fonctionnement de ce dernier - Google Patents

Système de gestion thermique de batterie pour véhicules électriques et procédé de fonctionnement de ce dernier Download PDF

Info

Publication number
WO2023281304A1
WO2023281304A1 PCT/IB2021/057905 IB2021057905W WO2023281304A1 WO 2023281304 A1 WO2023281304 A1 WO 2023281304A1 IB 2021057905 W IB2021057905 W IB 2021057905W WO 2023281304 A1 WO2023281304 A1 WO 2023281304A1
Authority
WO
WIPO (PCT)
Prior art keywords
battery pack
coolant
battery
pump
heater
Prior art date
Application number
PCT/IB2021/057905
Other languages
English (en)
Inventor
Parthasarathy K
B Satya PRASHANT
P. Guru KUMAR
Original Assignee
Nash Industries (I) Private Limited
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 Nash Industries (I) Private Limited filed Critical Nash Industries (I) Private Limited
Publication of WO2023281304A1 publication Critical patent/WO2023281304A1/fr

Links

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
    • B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
    • B60H1/00278—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit for the battery
    • 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
    • B60K11/00—Arrangement in connection with cooling of propulsion units
    • B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling
    • 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
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring 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
    • H01M10/62—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
    • H01M10/63—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
    • H01M10/65—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
    • 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
    • B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
    • B60H2001/00307—Component temperature regulation using a liquid flow
    • 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
    • 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
    • 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
    • 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
    • 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

Definitions

  • Embodiments of the present disclosure relate to thermal systems for battery packs in vehicles, and more particularly to a battery thermal management system for electric vehicles and a method to operate the same.
  • a battery thermal management system for electric vehicle includes a battery pack.
  • the system also includes a heat exchanger configured to selectively receive refrigerant from an air conditioning system of the electric vehicle.
  • the system includes a battery radiator configured to be located adjacent to a cooling fan.
  • the system further includes a valve configured to receive a coolant from the battery pack and selectively redirect the liquid coolant to at least one of the heat exchanger, the battery radiator and a heater.
  • the system further includes a pump configured to pump the coolant through the battery pack, the valve, the heat exchanger, the battery radiator and the heater.
  • the system further includes a monitoring unit comprising a plurality of temperature sensors corresponding to the battery pack and ambient atmosphere.
  • the plurality of temperature sensors is configured to sense temperature reading of the battery pack and the ambient atmosphere.
  • the system further includes an electronic control unit configured to receive the temperature reading of the battery pack and the ambient atmosphere sensed by the monitoring unit.
  • the electronic control unit is also configured to select a type of heat treatment, from the at least one of the heat exchanger, the battery radiator and a heater, to be performed on the coolant to maintain an optimum condition of the battery pack.
  • the pump is configured to pump the coolant induced with a drag reducing polymer from the reservoir depending upon the type of heat treatment selected by the electronic control unit, where the coolant is pumped across the battery pack with minimal effect on fluid characteristics of the coolant, thereby reducing power consumption or operational time of the pump.
  • an electric vehicle with battery management system includes a chassis and a plurality of wheels operatively coupled to the chassis.
  • the vehicle includes a steering operatively coupled to the plurality of wheels and an electric motor operatively coupled to the plurality of wheels.
  • the vehicle also includes a battery thermal management system operatively coupled to the electric motor.
  • the battery thermal management system includes a battery pack operatively coupled to the electric motor and configured to drive the electric motor.
  • the battery pack comprises a plurality of battery cells arranged in a plurality of cell arrays.
  • the battery thermal management system includes a heat exchanger configured to selectively receive refrigerant from an air conditioning system of the electric vehicle.
  • the battery thermal management system includes a battery radiator configured to be located adjacent to a cooling fan.
  • the battery thermal management system includes a valve configured to receive a coolant from the battery pack and selectively redirect the liquid coolant to at least one of the heat exchanger, the battery radiator and a heater.
  • the battery thermal management system includes a pump configured to pump the coolant through the battery pack, the valve, the heat exchanger, the battery radiator and the heater.
  • the system further includes a monitoring unit comprising a plurality of temperature sensors corresponding to the battery pack and ambient atmosphere. The plurality of temperature sensors is configured to sense temperature reading of the battery pack and the ambient atmosphere.
  • the system further includes an electronic control unit configured to receive the temperature reading of the battery pack and the ambient atmosphere sensed by the monitoring unit.
  • the electronic control unit is also configured to select a type of heat treatment, from the at least one of the heat exchanger, the battery radiator and a heater, to be performed on the coolant to maintain an optimum condition of the battery pack.
  • the pump is configured to pump the coolant induced with a drag reducing polymer from the reservoir depending upon the type of heat treatment selected by the electronic control unit, where the coolant is pumped across the battery pack with minimal effect on fluid characteristics of the coolant, thereby reducing power consumption or operational time of the pump.
  • a method to operate the battery management system includes sensing, by a monitoring unit, temperature reading of a battery pack and ambient atmosphere using a corresponding plurality of temperature sensors. The method also includes receiving, by an electronic control unit, the temperature reading of the battery pack and the ambient atmosphere sensed by the monitoring unit. The method further includes selecting, by the electronic control unit, a type of heat treatment, from the at least one of the heat exchanger, the battery radiator and a heater, to be performed on the coolant to maintain an optimum condition of the battery pack.
  • the method further includes pumping, by a pump, the coolant induced with a drag reducing polymer from the reservoir depending upon the type of heat treatment selected by the electronic control unit, wherein coolant is pumped across the battery pack with minimal effect on fluid characteristics of the coolant, thereby reducing power consumption or operational time of the pump.
  • FIG. 1 is a schematic representation of a battery thermal management system in accordance with an embodiment of the present disclosure
  • FIG. 2 is a block diagram representation of flow of treated fluid inside the battery pack in accordance with an embodiment of the present disclosure
  • FIG. 3 is a schematic represent of the battery thermal management system of FIG. 1 , depicting drag reducing polymers induced liquid cooling system in accordance with an embodiment of the present disclosure
  • FIG. 4 is a block diagram of one embodiment of the battery thermal management system of FIG. 1 and 3, depicting hybrid battery thermal management system in accordance with an embodiment of the present disclosure
  • FIG. 5 is a schematic representation of another embodiment of the battery thermal management system of FIG. 1 and FIG. 3, depicting a vehicle having the battery thermal management system in accordance with an embodiment of the present disclosure.
  • FIG. 6 is a flow chart representing the steps involved in a method for operating the battery thermal management system in accordance with an embodiment of the present disclosure.
  • elements in the figures are illustrated for simplicity and may not have necessarily been drawn to scale.
  • one or more components of the device may have been represented in the figures by conventional symbols, and the figures may show only those specific details that are pertinent to understanding the embodiments of the present invention so as not to obscure the figures with details that will be readily apparent to those skilled in the art having the benefit of the description herein.
  • Embodiments of the present disclosure relate to a battery thermal management system.
  • the system includes a battery pack.
  • the system also includes a heat exchanger configured to selectively receive refrigerant from an air conditioning system of the electric vehicle.
  • the system includes a battery radiator configured to be located adjacent to a cooling fan.
  • the system further includes a valve configured to receive a coolant from the battery pack and selectively redirect the liquid coolant to at least one of the heat exchanger, the battery radiator and a heater.
  • the system further includes a pump configured to pump the coolant through the battery pack, the valve, the heat exchanger, the battery radiator and the heater.
  • the system further includes a monitoring unit comprising a plurality of temperature sensors corresponding to the battery pack and ambient atmosphere.
  • the plurality of temperature sensors is configured to sense temperature reading of the battery pack and the ambient atmosphere.
  • the system further includes an electronic control unit configured to receive the temperature reading of the battery pack and the ambient atmosphere sensed by the monitoring unit.
  • the electronic control unit is also configured to select a type of heat treatment, from the at least one of the heat exchanger, the battery radiator and a heater, to be performed on the coolant to maintain an optimum condition of the battery pack.
  • the pump is configured to pump the coolant induced with a drag reducing polymer from the reservoir depending upon the type of heat treatment selected by the electronic control unit, where the coolant is pumped across the battery pack with minimal effect on fluid characteristics of the coolant, thereby reducing power consumption or operational time of the pump.
  • FIG. 1 is a schematic representation of a battery thermal management system (10) in accordance with an embodiment of the present disclosure.
  • the battery management system (BMS) is an electronic system which manages a rechargeable battery (cell or battery pack), such as by protecting the battery from operating outside its safe operating area, monitoring its state, calculating secondary data, reporting that data, controlling its environment, authenticating and/or balancing the battery.
  • the battery management system is configured to monitor voltage, current, temperature of the battery pack, coolant flow and manage thermal management of the battery pack.
  • the system (10) includes a battery pack (20).
  • the battery pack includes a set of identical batteries or individual battery cells.
  • the set of battery cells may be configured in a series, parallel or a mixture of both to deliver the desired voltage, capacity, or power density.
  • the battery pack (20) includes a set of interconnects (not shown in FIG. 1 ) which provide electrical conductivity between the set of battery cells.
  • the battery pack may be a rechargeable battery pack.
  • the rechargeable battery packs often contain a temperature sensor, which the battery charger uses to detect the end of charging.
  • the set of interconnects are also found in batteries as they are the part which connects each cell, though batteries are most often only arranged in series strings.
  • the battery pack (20) includes a plurality of pipes (30) inside the battery pack for thermal management as shown in FIG. 2.
  • the plurality of pipes (30) is configured to pass the coolant (40) inside the battery pack.
  • the coolant (40) may include at least one of air, liquid, or some form of phase change.
  • the plurality of pipes (30) may be arranged in at least one of a linear arrangement, hexagonal arrangement, serpentine arrangement or the like depending upon the size and type of the battery pack.
  • the battery pack (20) may include cylindrical batteries, prismatic batteries or the like.
  • the system (10) also includes a heat exchanger (50) which is configured to selectively receive refrigerant from an air conditioning system of the electric vehicle.
  • the system (10) further includes a battery radiator (60) which is configured to be located adjacent to a cooling fan.
  • the battery radiator (60) may be mounted adjacent to the radiator so that air flow that is drawn through the radiator by the cooling fan will also be drawn through the battery radiator.
  • the heat exchanger (50) is connected, via refrigerant lines, to the air conditioning system.
  • the system (10) includes a heater (70) which is located upstream of the battery pack (20). The heater (70) is configured to receive a flow of the coolant whereby the heater is activated to heat the coolant flowing thereto.
  • the heater (70), heat exchanger (50) and the battery radiator (60) are connected in parallel to each other via a valve (80).
  • the valve (80) is configured to receive the coolant (40) from the battery pack (20) and selectively redirect the coolant (40) to at least one of the heat exchanger (50), the battery radiator (60) and the heater (70).
  • the valve (80) may be a four way valve.
  • valve (80) is connected to coolant pipes (30) and is controllable to selectively direct a flow of coolant from the battery pack (20) to either the heat exchanger (50), heater (70) or the battery radiator (60).
  • coolant is a substance, typically liquid or gas, which is used to reduce or regulate the temperature of a system.
  • An ideal coolant has high thermal capacity, low viscosity, is low-cost, non-toxic, chemically inert and neither causes nor promotes corrosion of the cooling system.
  • the coolant (40) may be a common coolant such as a water and ethylene glycol mix.
  • the system may use a specialized coolant using de-ionized water and/or special inhibitors or may be some other type of liquid coolant with suitable heat transfer properties.
  • the system (10) further includes a pump (90) which is configured to pump the coolant (40) through the battery pack (20), the valve (80), the heat exchanger (50), the battery radiator (60) and the heater (70).
  • the pump (90) is coupled to a reservoir (100) which is having a low pressure cap and is connected to an air separator and allows for thermal expansion and contraction of the coolant in the battery thermal system.
  • the battery thermal system (10) may be operated in three modes.
  • the first mode is a battery cooling mode where the air conditioning system is not operating, thus no refrigerant flow through the heat exchanger (50).
  • the first mode employs battery radiator (60) cooling and is most strategically employed when the ambient air temperature is not too warm, and the electric vehicle operator has not turned on the air conditioning system.
  • the first mode may be employed while operating the electric vehicle and while the electric vehicle is plugged- in for battery recharging.
  • the second mode is a battery cooling mode where the air conditioning system is operating.
  • the pump (90) is activated, and the valve (80) is actuated to direct the coolant coming from the battery pack (20) to the heat exchanger (bypassing the battery radiator).
  • the coolant (40) flowing through the battery pack absorbs heat and then flows through the coolant lines to the heat exchanger.
  • the second mode may be employed while operating the electric vehicle and while the electric vehicle is plugged-in for battery recharging if the air conditioning system may be operated on electric power.
  • the third mode is a battery heating mode where there are cold ambient conditions.
  • the pump (90) is activated, and the valve (80) is actuated to direct the coolant coming from the battery pack to the heat exchanger (bypassing the battery radiator). In this mode, no cooled refrigerant flows through the heat exchanger, no heat transfer takes place.
  • the heater (70) is activated and transfers heat to the coolant as it passes through. The heat is then transferred to the battery pack (20) as the coolant flows through it, thus warming the battery pack.
  • This mode may also be employed while operating the electric vehicle or while the electric vehicle is plugged-in for battery recharging.
  • FIG. 3 is a schematic represent of the battery thermal management system (10) of FIG. 1, depicting drag reducing polymers induced liquid cooling system in accordance with an embodiment of the present disclosure.
  • the system (10) includes a monitoring unit (110) which includes a plurality of temperature sensors (120) corresponding to the battery pack (20) and ambient atmosphere.
  • the plurality of temperature sensors (120) is configured to sense temperature reading of the battery pack and the ambient atmosphere.
  • the NTC thermistor sensors obtain the necessary temperature readings from direct contact with the battery cell body.
  • temperature sensors are installed on the cell's electrical terminals to obtain the cell temperature.
  • the plurality of temperature sensors (120) is located underneath the battery box and is placed directly below the battery. Most batteries develop excessive heat towards the bottom of the core and often in the middle of the battery, which is why the temperature sensor is located in this position.
  • the system (10) includes an electronic control unit (130) operatively coupled to the monitoring unit (110).
  • the electronic control unit (130) is configured to receive the temperature reading of the battery pack (20) and the ambient atmosphere sensed by the monitoring unit (110).
  • the electronic control unit (130) is also configured to select a type of heat treatment, from the at least one of the heat exchanger (50), the battery radiator (60) and a heater (70), to be performed on the coolant (40) to maintain an optimum condition of the battery pack (20).
  • the pump (90) is configured to pump the coolant induced with a drag reducing polymer from the reservoir (100) depending upon the type of heat treatment selected by the electronic control unit (130).
  • drag-reducing polymers are additives in pipelines which reduce turbulent disturbances in the inner surface of a pipe. Using few parts per million of DRP’s, leads to a high-percentage of drag reduction which enhances the pipeline capacity, resulting substantial amount of cost and energy savings.
  • the polymer When the polymer is added, the polymer interacts with the coolant and the wall to help reduce the contact of the coolant with the wall.
  • the drag reducing polymer may be one of synthetic polymer or biopolymer.
  • the coolant (40) induced with the drag reducing polymer is pumped across the battery pack (20) with minimal effect on fluid characteristics of the coolant, thereby reducing power consumption or operational time of the pump.
  • FIG. 4 is a block diagram of one embodiment of the battery thermal management system (10) of FIG. 1 and 3, depicting hybrid battery thermal management system (150) in accordance with an embodiment of the present disclosure.
  • the DRP induced liquid cooling system may be used in uniform heat dissipation across the battery pack (20) in assistance of any hybrid cooling medium.
  • the system (10) may be most efficient when used in hybrid combination of graphene induced phase change material (PCM) media (160) and DRP induced liquid cooling system.
  • PCM graphene induced phase change material
  • the phase change materials are substances that absorb and release thermal energy (heat) during the process of melting and freezing. They are called “phase change” materials because they go from a solid to a liquid state or vice versa during the thermal cycling process.
  • the graphene foam saturated with phase change material are used across the surfaces of the battery packs while the liquid cooling system in the cooling pipes mounted across the battery pack would resolve the major issue of thermal runaway across the battery pack in the electric vehicle.
  • FIG. 5 is a schematic representation of another embodiment of the battery thermal management system (10) of FIG. 1 and FIG. 3, depicting an electric vehicle (200) having the battery thermal management system (10) in accordance with an embodiment of the present disclosure.
  • the vehicle (200) includes a chassis (210) and a plurality of wheels (220) operatively coupled to the chassis.
  • the vehicle (200) includes a steering (230) operatively coupled to the plurality of wheels and an electric motor (240) operatively coupled to the plurality of wheels.
  • the vehicle (200) further includes an engine compartment (250) within which a power plant (262) is mounted.
  • the vehicle (200) also includes a passenger cabin area (260), within which a battery pack (20) is mounted.
  • the battery pack may be mounted outside of the passenger cabin area.
  • the battery pack may include a plug-in charger (261).
  • the power plant may have coolant lines (30) which may be located adjacent to a cooling fan (265).
  • the vehicle (200) also includes a battery thermal management system (10) operatively coupled to the electric motor (240).
  • the battery thermal management system includes the battery pack (20) operatively coupled to the electric motor (240) and configured to drive the electric motor (240).
  • the battery pack (20) comprises a plurality of battery cells arranged in a plurality of cell arrays.
  • the battery thermal management system includes a heat exchanger (50) configured to selectively receive refrigerant from an air conditioning system of the electric vehicle (200).
  • the battery thermal management system includes a battery radiator (60) configured to be located adjacent to a cooling fan.
  • the battery thermal management system includes a heater (70) which is located upstream of the battery pack. The heater (70) is configured to receive a flow of the coolant (40) whereby the heater is activated to heat the coolant flowing thereto.
  • the battery thermal management system (10) includes a valve (80) configured to receive the coolant (40) from the battery pack and selectively redirect the liquid coolant to at least one of the heat exchanger (50), the battery radiator (60) and a heater (70).
  • the battery thermal management system includes a pump (90) configured to pump the coolant through the battery pack (20), the valve (80), the heat exchanger (50), the battery radiator (60) and the heater (70).
  • the system further includes a monitoring unit (110) comprising a plurality of temperature sensors (120) corresponding to the battery pack and ambient atmosphere. The plurality of temperature sensors (120) is configured to sense temperature reading of the battery pack and the ambient atmosphere.
  • the system further includes an electronic control unit ( 130) configured to receive the temperature reading of the battery pack and the ambient atmosphere sensed by the monitoring unit.
  • the electronic control unit ( 130) is also configured to select a type of heat treatment, from the at least one of the heat exchanger, the battery radiator and a heater, to be performed on the coolant to maintain an optimum condition of the battery pack.
  • the pump (90) is configured to pump the coolant induced with a drag reducing polymer from the reservoir depending upon the type of heat treatment selected by the electronic control unit, where the coolant is pumped across the battery pack with minimal effect on fluid characteristics of the coolant, thereby reducing power consumption or operational time of the pump.
  • FIG. 6 is a flow chart representing the steps involved in a method (300) for operating the battery thermal management system in accordance with an embodiment of the present disclosure.
  • the method (300) includes sensing, by a monitoring unit, temperature reading of a battery pack and ambient atmosphere using a corresponding plurality of temperature sensors in step 310.
  • the method (300) also includes receiving, by an electronic control unit, the temperature reading of the battery pack and the ambient atmosphere sensed by the monitoring unit in step 320.
  • the method (300) further includes selecting, by the electronic control unit, a type of heat treatment, from the at least one of the heat exchanger, the battery radiator and a heater, to be performed on the coolant to maintain an optimum condition of the battery pack in step 330.
  • the method (300) further includes pumping, by a pump, the coolant induced with a drag reducing polymer from the reservoir depending upon the type of heat treatment selected by the electronic control unit, where coolant is pumped across the battery pack with minimal effect on fluid characteristics of the coolant, thereby reducing power consumption or operational time of the pump in step 340.
  • the drag reducing polymer may be one of synthetic polymer or biopolymer.
  • the drag reducing polymer induced coolant is used for uniform heat dissipation across the battery pack in assistance of hybrid cooling medium when used in hybrid battery thermal management system.
  • the hybrid cooling medium may include graphene foam saturated with phase change material.
  • the graphene foam saturated with phase change material are used across surfaces of the battery packs while the coolant in one or more cooling pipes mounted across the battery pack are configured to resolve thermal runaway across the battery pack in the electric vehicle.
  • Various embodiments of the battery thermal management system described above enables efficient thermal management system with minimum power consumption and may also avoid thermal runaway problem existing in the conventional systems using the drag reducing polymers.
  • DRP high molecular weight drag-reducing polymers
  • the system may also be incorporated with any hybrid battery management system having liquid cooling system as a primary system resolving the issues of uniform heat dissipation/thermal runaway.
  • Another advantage of an embodiment is that the battery thermal system provides battery cooling whether the vehicle air conditioning system is off or on. The system saves electric energy, improves the endurance of new- energy automobile, and is also safe.
  • the use of phase change material improves the security of battery system.

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)
  • Transportation (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Power Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Secondary Cells (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

Un système de gestion thermique de batterie pour véhicule électrique est divulgué. Le système inclut une unité de surveillance comprenant des capteurs de température correspondant à un bloc-batterie et à une atmosphère ambiante. Les capteurs de température détectent une lecture de température du bloc-batterie et de l'atmosphère ambiante. Le système inclut une unité de commande électronique permettant de recevoir la lecture de température du bloc-batterie et l'atmosphère ambiante détectée par l'unité de surveillance. L'unité de commande électronique sélectionne un type de traitement thermique, à partir de l'un d'un échangeur de chaleur, d'un radiateur de batterie et d'un appareil de chauffage, devant être réalisé sur l'agent de refroidissement. Le système inclut une pompe permettant de pomper l'agent de refroidissement induit par un polymère réducteur de traînée à partir du réservoir en fonction du type de traitement thermique, l'agent de refroidissement étant pompé à travers le bloc-batterie avec un effet minimal sur des caractéristiques de fluide de l'agent de refroidissement, ce qui permet de réduire la consommation d'énergie ou le temps de fonctionnement de la pompe.
PCT/IB2021/057905 2021-07-08 2021-08-30 Système de gestion thermique de batterie pour véhicules électriques et procédé de fonctionnement de ce dernier WO2023281304A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN202141030759 2021-07-08
IN202141030759 2021-07-08

Publications (1)

Publication Number Publication Date
WO2023281304A1 true WO2023281304A1 (fr) 2023-01-12

Family

ID=84801350

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2021/057905 WO2023281304A1 (fr) 2021-07-08 2021-08-30 Système de gestion thermique de batterie pour véhicules électriques et procédé de fonctionnement de ce dernier

Country Status (1)

Country Link
WO (1) WO2023281304A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117039244A (zh) * 2023-08-09 2023-11-10 上海聚信海聚新能源科技有限公司 分泵式节能冷却系统、储能柜和pcs冷却控制方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120006607A1 (en) * 2009-05-28 2012-01-12 Toyota Jidosha Kabushiki Kaisha Fuel cell system and vehicle
CN108598301A (zh) * 2017-12-29 2018-09-28 北京国能电池科技有限公司 电池箱
US20190152904A1 (en) * 2016-05-25 2019-05-23 Kao Corporation Viscometric properties improver

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120006607A1 (en) * 2009-05-28 2012-01-12 Toyota Jidosha Kabushiki Kaisha Fuel cell system and vehicle
US20190152904A1 (en) * 2016-05-25 2019-05-23 Kao Corporation Viscometric properties improver
CN108598301A (zh) * 2017-12-29 2018-09-28 北京国能电池科技有限公司 电池箱

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117039244A (zh) * 2023-08-09 2023-11-10 上海聚信海聚新能源科技有限公司 分泵式节能冷却系统、储能柜和pcs冷却控制方法
CN117039244B (zh) * 2023-08-09 2024-04-19 上海聚信海聚新能源科技有限公司 分泵式节能冷却系统、储能柜和pcs冷却控制方法

Similar Documents

Publication Publication Date Title
US9515360B2 (en) Battery pack air cooling structure provided with thermoelectric element and control method thereof
CN102089925B (zh) 可充电的蓄积电能的电池的热调节方法和装置
JP4915969B2 (ja) バッテリパック温度最適化制御システム
US9212599B2 (en) Control of compressor outlet pressure based on temperature of thermal load cooled by coolant in electric vehicle
US10388971B2 (en) Fuel cell stack thermal management
JP5325259B2 (ja) デュアルモードの冷却材ループを備えた熱管理システム
US20140311704A1 (en) Cooling Apparatus
CN109305060B (zh) 一种电池包热管理系统及其控制方法
US20080292948A1 (en) Battery cooling system and methods of cooling
CN105742754A (zh) 一种电池包液体冷却/加热系统试验装置
CN102308428A (zh) 用于管理电池中的热量的方法
US20080292945A1 (en) Battery heating system and methods of heating
CN208515373U (zh) 一种混合动力汽车热管理系统
CN109638386B (zh) 一种汽车和供暖与动力电池加热系统及方法
CN204558619U (zh) 一种电池包的温度管理系统
CN105680112A (zh) 通过扩散阻挡层的电池湿度控制
WO2023281304A1 (fr) Système de gestion thermique de batterie pour véhicules électriques et procédé de fonctionnement de ce dernier
GB2509308A (en) Heat transfer arrangement for heating battery
US20090214913A1 (en) Temperature regulating system for fuel cells and method for regulating the temperature of fuel cells
CN211295320U (zh) 一种新能源汽车电池冷却系统
CN214542347U (zh) 一种新能源汽车的电池预热及废热利用系统
CN114243159B (zh) 一种基于分布式冷却的汽车动力电池热管理系统
CN105449311A (zh) 一种液体换热电池模块结构
EP4258416A1 (fr) Procédé de gestion thermique et système de gestion thermique
CN112803094A (zh) 一种新能源汽车的电池预热及废热利用系统

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21949181

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 21949181

Country of ref document: EP

Kind code of ref document: A1