GB2591236A - A method for determining a charging strategy for a high voltage battery of an electrically powered motor vehicle, as well as a battery charging management sys - Google Patents

A method for determining a charging strategy for a high voltage battery of an electrically powered motor vehicle, as well as a battery charging management sys Download PDF

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Publication number
GB2591236A
GB2591236A GB2000849.6A GB202000849A GB2591236A GB 2591236 A GB2591236 A GB 2591236A GB 202000849 A GB202000849 A GB 202000849A GB 2591236 A GB2591236 A GB 2591236A
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United Kingdom
Prior art keywords
charging
battery
determining
motor vehicle
high voltage
Prior art date
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Withdrawn
Application number
GB2000849.6A
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GB202000849D0 (en
Inventor
Hafez Bahaaeldeen
Guo Wei
Abdul-Hak Mohamad
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Mercedes Benz Group AG
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Daimler AG
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Publication date
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Priority to GB2000849.6A priority Critical patent/GB2591236A/en
Publication of GB202000849D0 publication Critical patent/GB202000849D0/en
Publication of GB2591236A publication Critical patent/GB2591236A/en
Withdrawn legal-status Critical Current

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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
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/60—Monitoring or controlling charging stations
    • B60L53/62—Monitoring or controlling charging stations in response to charging parameters, e.g. current, voltage or electrical charge
    • 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
    • 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
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/60—Monitoring or controlling charging stations
    • B60L53/63—Monitoring or controlling charging stations in response to network capacity
    • 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
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/60—Monitoring or controlling charging stations
    • B60L53/64—Optimising energy costs, e.g. responding to electricity rates
    • 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
    • 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
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/54—Drive Train control parameters related to batteries
    • B60L2240/545—Temperature
    • 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
    • B60L2250/00—Driver interactions
    • B60L2250/14—Driver interactions by input of vehicle departure time
    • 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
    • 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
    • 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
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • 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
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/12—Electric charging stations
    • 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
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/16—Information or communication technologies improving the operation of electric vehicles
    • Y02T90/167—Systems integrating technologies related to power network operation and communication or information technologies for supporting the interoperability of electric or hybrid vehicles, i.e. smartgrids as interface for battery charging of electric vehicles [EV] or hybrid vehicles [HEV]
    • 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
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/12—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
    • Y04S10/126—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation the energy generation units being or involving electric vehicles [EV] or hybrid vehicles [HEV], i.e. power aggregation of EV or HEV, vehicle to grid arrangements [V2G]
    • 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
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S30/00—Systems supporting specific end-user applications in the sector of transportation
    • Y04S30/10—Systems supporting the interoperability of electric or hybrid vehicles
    • Y04S30/14—Details associated with the interoperability, e.g. vehicle recognition, authentication, identification or billing

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

A method for determining a charging strategy (profile) for an electric vehicle, comprising determining a: user setting S1; power source limitation S4; and use of the battery’s thermal conditioning (heating/cooling) device S7. The user setting may be parking time, departure time or charging time. The utility (power source) limitation may be cost or charging power. The charging profile may consider passive heating and/or cooling features of the battery of the vehicle. The charging profile may consider the thermal preconditioning needed to prepare the battery for driving. In a preferred embodiment a user inputs a setting (parking time) S1. If the charging time is shorter than the parking time S2 the vehicle determines at least one charging profile based on the utility limitation S4. If more than one charging strategy is produced S5 a strategy which uses the least active cooling/heating of the battery is selected S7. The method reduces the need to heat and/or cool the battery during the charging process.

Description

A method for determining a charging strategy for a high voltage battery of an electrically powered motor vehicle, as well as a battery charging management system
FIELD OF THE INVENTION
[0001]The invention relates to a method for determining a charging strategy for a high voltage battery of an at least partially electrically powered motor vehicle by a battery charging management system of the motor vehicle according to claim 1. Further the invention relates to a battery charging management system for determining a charging strategy for a high voltage battery of an at least partially electrically powered motor vehicle.
BACKGROUND INFORMATION
[0002]According to the state of the art, the available time for charging an at least partially electrically powered motor vehicle battery at home or work is longer than the required time to charge the motor vehicle battery to a user specified state of charge (SOC). In the current state of the art, an optimized charging profile for the battery is negotiated between the electric vehicle and the electrical power source, which may be the utility or grid, through the electrical vehicle supply equipment. This charging profile is optimized based on the utility/grid limitations which may be, for example, power and price tables, the battery charging limits, which are for example the on-board-charging probability, and user preferences, for example the leaving time or the targeted SOC. This approach's main objective is to minimize the battery charging cost but does not consider the battery temperature during the charging process. Additionally, this approach does not consider preconditioning the battery for driving or minimizing vehicle energy consumption while parking by minimizing/eliminating the use of the vehicle's active thermal conditioning system, for example, heating or cooling the battery.
[0003] The US 2017/0129359 Al relates to a vehicle including an electric machine arranged to exchange power with a traction battery. The vehicle also includes a thermal conditioning system for influencing a battery temperature and a controller programmed to schedule battery charging. In response to a temperature of the traction battery exceeding a threshold, the controller issues a command to operate the thermal conditioning system prior to a schedule battery charge to achieve a predetermined battery temperature at a start of battery charging.
[0004] According to a battery system related to the US 2017/0225586 Al, a system includes a battery module, a thermal management system and a battery system controller. The controller is configured to receive data indicative of first operational conditions of the battery module and of second operational conditions of the thermal management system. The controller determines a desired change to the first operational conditions of the battery module by determining an amount of power available to the thermal management system and to the battery module from one or more power sources. The controller then enables, to effect the desired change to the first operational conditions, the one or more power sources to provide a first quantity of power to the thermal management system and a second quantity of power to the battery module and the thermal management system to heat or to cool the battery module to a calculated extent.
[0005] It is an object of the invention to provide a method and a battery charging management system, by which a more advantageous charging strategy for a high voltage battery is provided.
[0006] This object is solved by a method and a battery charging management system according to the independent claims. Advantageous forms of configuration are specified in the dependent claims.
SUMMARY OF THE INVENTION
[0007] An aspect of the invention relates to a method for determining a charging strategy for a high voltage battery of an at least partially electrically powered motor vehicle by a battery charging management system of the motor vehicle, by which at least a utility limitation of an external power source and at least one user setting for the use of the motor vehicle are considered for determining the charging strategy by an electronic computing device of the battery charging management system.
[0008] It is provided that additionally at least one active use of the thermal conditioning device for thermal conditioning of the high voltage battery and/or thermal preconditioning of the high voltage battery for a driving mode are considered for determining the charging strategy by the electronic computing device.
[0009] An advantageous charging strategy for the high voltage battery is provided by the present invention. The present invention provides a solution to develop an algorithm in the electronic computing device within the vehicle charging control system, which can be in particular the battery charging management system, which calculates an optimum vehicle charging profile. The algorithm considers the utility limitation, which can be, for example, the power and the price tables, a user setting, which can be, for example, the time before the next trip by the electric vehicle (leaving time) and the required SOC upon leaving for said trip. The algorithm, depending on the aforementioned parameters, creates a charging profile that minimizes the use of the vehicle's active thermal conditioning, for example heating or cooling while parking. Furthermore, providing the battery preconditions for optimal driving conditions are considered. The algorithm minimizes the use of active thermal conditioning and provides a battery preconditioning for driving by taking advantage of the vehicle's passive thermal conditioning.
[0010] In an advantageous form of configuration, the active use of the thermal conditioning device is minimized in the charging strategy by the consideration of passive thermal conditioning, which may include a battery thermal model, heat generated during charging of the high voltage battery, ambient environmental conditions, ventilation around the motor vehicle, or available parking time.
[0011]In a further advantageous form of configuration, a first step of the method includes identifying a charging time and the available parking time based on the at least one user setting, a motor vehicle charging capability based on the capacity of the high voltage battery and at least one utility limitation.
[0012] Further, it has also proven advantageous that lithe charging time is shorter than the parking time, the charging strategy considers in a further step the costs of the charging based on the at least one utility limitation.
[0013] Another aspect of the invention relates to a battery charging management system for determining a charging strategy for a high voltage battery of an at least partially electrically powered motor vehicle, which uses an electronic computing device wherein the battery charging management system is built for performing a method according to the preceding aspects. In particular, the method is performed by the battery charging management system.
[0014] Another further aspect of the invention relates to a motor vehicle with the battery charging management system according to the preceding aspect. The motor vehicle is in particular at least partially electrically powered.
[0015] Further advantages, features, and details of the invention derive from the following description of a preferred embodiment as well as from the drawing. The features and feature combinations previously mentioned in the description as well as the features and feature combinations mentioned in the following description of the figure and/or shown in the figure alone can be employed not only in the respectively indicated combination but also in any other combination or taken alone without leaving the scope of the invention.
BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The drawing shows in a schematic flow chart an embodiment of the method.
DETAILED DESCRIPTION
[0017] In the figures the same elements or elements having the same function are indicated by the same reference signs.
[0018]The figure shows in a schematic view a flow chart of the method. The method according to the invention is performed as a computer program on an electronic computing device 10, which is in particular a part of a battery charging management system 12 for determining a charging strategy for a high voltage battery of an at least partially electrically powered motor vehicle, which are not shown.
[0019]According to the figure, the method starts in a starting point 14. In a first step Si, an algorithm defines the required charging time and the available parking time based on the user setting, for example a leaving time and a required SOC, the vehicle charging capability, for example from the on-board charging power and battery capacity, and the utility power table and the battery management charging power. In a second step 52, it is determined if the parking time is higher than the charging time. If the parking time is lower than the charging time, the third step S3 follows, where the vehicle is charged immediately. If the vehicle has enough time for full charging, a cost optimization while parking is performed. For this case the algorithm proceeds from the second step S2 to the fourth step S4 where the algorithm calculates the possible options for cost optimized charging time. The possible options for optimized charging time may consider, for example, lowest price based on the utility limitation, for example the price and the power tables, and the vehicle charging needs, for example the needed energy and the charging time in order to complete the next trip or reach the required SOC. In a fifth step S5, it is determined if there is more than one cost-optimized charging time solution. If there is one solution, the method proceeds to the sixth step S6 where the charging time for the battery is based on this one solution. If there are more than one solution, the algorithm proceeds to determine the optimal charging profile by considering cost-optimized charging time, including the timing until the vehicle will leave, which can consequently minimize the active cooling needed to be applied to the battery. For this case the method proceeds to a seventh step 57, where the algorithm calculates the optimum cost-optimized charging time that results in a minimum use of the active battery thermal conditioning, for example cooling or heating, and the optimum battery operating temperature for driving, for example by preconditioning of the battery. In an eighth step S8, the charge based on the optimum total cost-optimized charging time is performed. In a ninth step S9, the system 12 sends notification to the user and other parties, for example, the user and the operator of the battery management charging system 10 with its selected charging schedule. The charge is completed accordingly and the method is ended at the end point 16.
S
[0020] The figure shows a method for determining a charging strategy for a high voltage battery of an at least partially electrically powered motor vehicle by the battery charging management system 12 of the motor vehicle. The method considers at least the utility limitation of an external power source and at least one user setting for the use of the motor vehicle for determining a charging strategy by the electronic computing device 10 of the battery charging management system 12. Additionally, at least an active use of a thermal conditioning device for thermal conditioning of the high voltage battery and/or thermal preconditioning of the high voltage battery for a driving mode are considered for determining the charging strategy by the electronic computing device 10.
[0021] In particular, the figure shows that the active use of the thermal conditioning device is minimized in the charging strategy by the consideration of a battery thermal model and/or a heat generated during charging of the high voltage battery and/or ambient environmental conditions and/or a ventilation around the motor vehicle and/or an available parking time.
[0022] As mentioned before, the algorithm starts by identifying the required charging time and the available parking time based on the user settings, vehicle charging capability, the utility power table and the battery charging management system charging power. If the charging time is shorter than the available parking time, then the algorithm identifies the cost-optimized charging time options based on the utility constraints and the user setting. If more than one time option is available, the algorithm identifies the cost-optimized charging profile that results in an optimum battery pre-conditioning temperature for driving and minimal use of active battery thermal conditioning by utilizing passive thermal conditioning.
[0023] It should be appreciated that passive thermal conditioning may include several considerations, including but not limited to the battery thermal behavior/model, heat generated through charging, ambient environmental conditions (including consideration of future environmental conditions), ventilation around the vehicle, and the available parking time. The algorithm to determine the optimal charging profile while minimizing the use of the vehicle's active battery thermal conditioning system may use any combination or sub-combination of the aforementioned considerations.
[0024] In an exemplary embodiment of the present invention, the preferred operating temperature of the battery is in the range of 15 and 35°C. This temperature is impacted by the ambient temperature and vehicle operating conditions. Usually battery temperature increases when charging or driving the vehicle. If the battery temperature gets cold or hot, an active thermal conditioning circuit may be used to bring the battery temperature to the preferred temperature range. For example, if there is a freezing ambient temperature, a heater is turned on to heat the battery, and if it is hot due to vehicle driving charging or hot ambient temperature, a cooler is turned on to cool the battery temperature down. The active thermal conditioning element, for example, a heater or a cooler, needs power from the vehicle high voltage battery. When powered on, they increase the vehicle's energy consumption. This invention targets to leverage/use the heat generated during charging to raise the battery temperature in case of cold ambient temperature, and in the case of hot ambient temperature, the algorithm will distribute the charging time across the parking time to limit the temperature increase due to heat generated from charging. This will minimize the use of active thermal conditioning circuits that result in reducing the vehicle energy consumption.
[0025] The figure shows an electronic vehicle charging profile optimization for optimum cost, battery driving pre-conditioning and minimum energy consumption.
Reference list electronical computing device 12 battery charging management system 14 starting point 16 ending point Si first step S2 second step S3 third step S4 fourth step S5 fifth step S6 sixth step 37 seventh step S8 eighth step S9 ninth step

Claims (7)

  1. CLAIMS1. A method for determining a charging strategy for a high voltage battery of an at least partially electrically powered motor vehicle by a battery charging management system (12) of the motor vehicle, by which at least a utility limitation of an external power source and at least one user setting for the use of the motor vehicle are considered for determining the charging strategy by an electronic computing device (10) of the battery charging management system, characterized in that at least an active use of a thermal conditioning device for a thermal conditioning of the high voltage battery are considered for determining the charging strategy by electronic computing device (10).
  2. 2. The method according to claim 1, wherein thermal preconditioning of the high voltage battery for a driving mode is considered for determining the charging strategy by the electronic computing device (10).
  3. 3. The method according to claim 1 or 2, characterized in that the use of the active thermal conditioning device is minimized in the charging strategy by the consideration of passive thermal conditioning.
  4. 4. The method according to claim 1 or 2, characterized in that in a first step (Si) of the method, identification of a charging time and the available parking time based on the at least one user setting, a motor vehicle charging capability based on the capacity of the high voltage battery, and of the at least one utility limitation is performed.
  5. 5. The method according to claim 4, characterized in that if the charging time is shorter than the parking time (S2), the charging strategy considers in a further step the costs of the charging based (S4) on the at least one utility limitation.
  6. 6. A battery charging management system (12) for determining a charging strategy for a high voltage battery of an at least partially electrically powered motor vehicle with at least an electronic computing device (10), wherein the battery charging management system (12) is built for performing a method according to claim 3.
  7. 7. A battery charging management system (12) for determining a charging strategy for a high voltage battery of an at least partially electrically powered motor vehicle with at least an electronic computing device (10), wherein the battery charging management system (12) is built for performing a method according to claim 5.
GB2000849.6A 2020-01-21 2020-01-21 A method for determining a charging strategy for a high voltage battery of an electrically powered motor vehicle, as well as a battery charging management sys Withdrawn GB2591236A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2612119A (en) * 2021-10-22 2023-04-26 Jaguar Land Rover Ltd Vehicle charging control
GB2613786A (en) * 2021-12-14 2023-06-21 Jaguar Land Rover Ltd Battery charging protocols

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112874373B (en) * 2021-04-08 2022-06-21 湖南大学 Ordered charging control method, system and medium based on charging station load scheduling
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