WO2023075624A1 - Processus, système et kit permettant la commande automatique de courant ou de puissance électrique disponible pour un dispositif cible connecté à une installation électrique - Google Patents

Processus, système et kit permettant la commande automatique de courant ou de puissance électrique disponible pour un dispositif cible connecté à une installation électrique Download PDF

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Publication number
WO2023075624A1
WO2023075624A1 PCT/PT2022/050029 PT2022050029W WO2023075624A1 WO 2023075624 A1 WO2023075624 A1 WO 2023075624A1 PT 2022050029 W PT2022050029 W PT 2022050029W WO 2023075624 A1 WO2023075624 A1 WO 2023075624A1
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WO
WIPO (PCT)
Prior art keywords
power
current
electrical
target device
value
Prior art date
Application number
PCT/PT2022/050029
Other languages
English (en)
Inventor
Paulo MARTINS
Original Assignee
Open Dynamics, Lda.
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 Open Dynamics, Lda. filed Critical Open Dynamics, Lda.
Publication of WO2023075624A1 publication Critical patent/WO2023075624A1/fr

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/00032Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION 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
    • B60L53/00Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/10Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
    • B60L53/14Conductive energy transfer
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION 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
    • B60L53/00Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/60Monitoring or controlling charging stations
    • B60L53/62Monitoring or controlling charging stations in response to charging parameters, e.g. current, voltage or electrical charge
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION 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
    • B60L53/00Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/60Monitoring or controlling charging stations
    • B60L53/63Monitoring or controlling charging stations in response to network capacity

Definitions

  • the present invention relates to a process , system and kit for automatically controlling the electrical current or power available to be supplied to an electrical target device , like a vehicle charger or similar, which target device is electrically connected to the electrical household installation .
  • the invention lies in the field of electrical power management and electric vehicle charging .
  • European Patent EP2518852B1 entitled “Power monitoring and control apparatus and power monitoring and control method” discloses a power monitoring and control apparatus and system, which level charge loads of electric vehicles over an overall power system as well as make the power loads fall within the maximum contract power, in plug-in charging of the electric vehicles in individual houses .
  • the power monitoring and control apparatus is used in charging a battery-mounted equipment from the power system through a battery charger .
  • the apparatus compares a current value available for charging the battery-mounted equipment from the power system with a charging current value requested to the battery charger from the battery-mounted equipment , and employs as the charging current to the battery-mounted equipment a smaller one among the charging current available value and the charging request value .
  • European Patent Application EP1691336A2 entitled “Usage monitoring apparatus” , discloses an apparatus for monitoring usage of multiple electrical devices .
  • the apparatus comprises multiple non-invasive current sensors for sensing current in respective conductors associated with the electrical devices . Such conductors may for example be the electrical power supply leads to the devices .
  • the apparatus further comprises multiple analogue to digital conversion functions for digiti zing the output from the respective current sensors .
  • a microprocessor is arranged to receive the digiti zed current sensor and is programmed to create usage data relating to the respective electrical devices . Such usage data may include cumulative elapsed running time .
  • the microprocessor has an associated memory in which the usage data is stored in association with corresponding data identi fying the electrical devices .
  • the system further comprises an interface through which the usage and identi bomb data are extractable , to provide usage information for the respective electrical devices .
  • the apparatus may be divided into two separate sub-systems connected through a bus and it is particularly preferred that a sub-system incorporating the current sensors is mounted to , or otherwise associated with, a power distribution unit .
  • European Patent EP2335335B1 entitled " system for electricity provision, usage monitoring, analysis , and enabling improvements in ef ficiency" , discloses systems , devices and methods for the ef ficient use of utilities , more particularly to the distribution and provision of electricity supply at appropriate voltages , monitoring and usage by end devices , and to facilitating consumers in changing their energy usage behaviour, and to adopt and easily install appropriate sustainable , energy ef ficient or renewable technologies .
  • Said end devices typically including traditional electric, electronic and lighting appliances requiring AC or DC power provision or low voltage DC power via AC/DC converters .
  • the invention stands for monitoring and analysis , lacking a disclosure for any practical actuation system or process
  • Japanese Patent JP5168891B2 entitled Charging power management system for motor-driven vehicle” discloses a charging power management system for a motor-driven vehicle that can prevent total power load of a house from exceeding maximum contract power, during charging .
  • This system is provided with a power detection device , which detects electric power to in-residence power loads , a power history obtaining device , which creates power consumption history of the in-residence power loads , based on the detection result of the power detection device , and an estimated charging power calculation device , which calculates the estimated power consumption of a house in a predetermined time slot , based on the information of the power consumption history .
  • An estimated value of vehicle charging power, a charging demand power value , and residence-side available power are compared, and it is so set that the lowest electric power is the charging power .
  • this invention requires the modi fication of the existing electrical installation, and the modulation of the charging current is done by directly controlling an external charger not in the vehicle .
  • the present invention relates to a process for automatically controlling electrical current or power available to a target device connected to an electrical installation.
  • the process comprises setting a value I ma x of maximum electrical current or power allowed by an electrical installation, and further comprises at least one cycle comprising the steps of: a) measuring a total electrical current or power value If being drawn from the electrical installation, and measuring a current or power value I C h being drawn by a target device; b) calculating an available current or power value I a by subtracting the measured value If from the set value Imax and adding the measured value I C h; and c) transmitting the calculated value I a to the target device.
  • Each process cycle can be performed in a time greater than or equal to 0,5 milliseconds, preferably in a time selected between 0,5 milliseconds and 300 seconds, more preferably between 10 milliseconds and 120 seconds, even more preferably between 100 milliseconds and 100 seconds, most preferably between 500 milliseconds and 10 seconds.
  • the invention further relates to a system for automatically controlling electrical current or power available to a target device connected to an electrical installation, the system comprising :
  • a CPU (20) in data communication with the transmission means ( 12 , 15, 1 ) , characterized in that it further comprises: a power cable (18) ; • a secondary current or power measuring device (16) connected to the power cable (18) and in data communication with the CPU (20) ; and
  • a communication and interface device (21) in data communication with the CPU (20) ; wherein, in operation, the power cable (18) is configured to connect a target device to the electrical installation, and the communication and interface device (21) is configured to transmit information from the CPU (20) to a target device.
  • the system further comprises a timer module, wherein, in operation, the timer module is configured to enable or disable electric current or power to a target device.
  • the invention also relates to an electrical kit for automatically controlling electrical current or power available to a target device connected to an electrical installation, the kit comprising :
  • a second unit (14) containing a power cable (18) , a secondary current or power measuring device (16) , a CPU (20) , a communication and interface device (21) , and a receiver (19) ; wherein, in operation, the receiver (19) is configured to receive data from the transmitter (12) .
  • the second unit (14) of the kit is a wall box .
  • the second unit ( 14 ) of the kit is a portable box .
  • Fig . 1 is a flowchart of the process of the invention to achieve the value I a of the electrical current or power available to be provided to a target device , for example to a vehicle electric charger .
  • Fig . 2 is a block diagram depicting an embodiment of the system of the present invention implemented in an existing household electrical installation .
  • Fig . 3 is a simpli fied block diagram depicting the points where values If and I C h are measured from the system of the invention .
  • the present invention relates to a process , system and kit for automatically controlling the electrical current or power available to be supplied to an electrical target device, for example an electric vehicle or a household appliance that supports such type of control .
  • the process , system and kit of the present invention prevent reaching the threshold electrical current or power that triggers the tripping of the limiter device from the domestic or industrial electrical power supply installation .
  • the present solution brings considerable cost savings as wel l as avoids the inconvenience of having to deal with supply interruptions caused by going over the electric current or power limit when, for example , an electric vehicle is connected to the household ( or industrial ) electrical installation for batteries charging .
  • the present invention does not require such sort of modi fications and presents a simple and ef fective solution to reach the mentioned ef fects , since its operation relies on the fact that some target devices , like most electrical vehicles , have the ability to allow external control of the amount of electrical current or power to be used . It is foreseeable that in the increasingly growing course of the fields of Internet of Things and house automation, many other household appliances will show up in a near future featuring the ability to allow such external control of the amount of used electrical current or power .
  • This vehicle external control capability of the maximum permissible electrical current or power can be used in a more sophisticated way resorting the present invention .
  • By sending the appropriate information to the vehicle onboard battery charging system it is possible to avoid reaching the installation allowed maximum limit of electrical power, thus avoid tripping any circuit breaker-type limiting system or a digital equivalent like the ones implemented on smart meters .
  • the process for automatically controlling electrical current or power available to a target device connected to an electrical installation comprises setting a value I max of maximum electrical current or power allowed by an electrical installation, and further comprises at least one cycle comprising the steps of : a ) measuring a total electrical current or power value I f being drawn from the electrical installation, and measuring a current or power value I C h being drawn by a target device ; b ) calculating an available current or power value I a by subtracting the measured value If from the set value I max and adding the measured value I C h; and c ) transmitting the calculated value I a to the target device .
  • Each process cycle can be performed in a time greater than or equal to 0 , 5 mil liseconds , preferably in a time selected between 0 , 5 milliseconds and 300 seconds , more preferably between 10 milliseconds and 120 seconds , even more preferably between 100 milliseconds and 100 seconds , most preferably between 500 milliseconds and 10 seconds .
  • the process of the invention can be implemented in a household or industrial electrical installation by means of an example system like the one shown in Fig. 2.
  • reference numbers (1 to 7) represent existing electrical devices used for distribution in a typical household or other site.
  • Remaining reference numbers represent the set of the present invention and reference number (100) represents an information receiving element of the target device, for example an onboard battery charging of an electric vehicle.
  • mains AC power is entering the site on electrical cables (1) , it then goes through a current or power limiting system (2) and reaches the main distribution board (4) through mains cables (3) .
  • Power is then subsequently distributed on premises to a multitude of electrical devices (6) , like lighting fixtures, refrigerators, heaters, etc., using multiple distribution branches (5) .
  • Reference number (7) relates to an installation outlet, for example a wall outlet.
  • a primary current or power measuring device (11) is installed on the mains cable (3) that carries the total current being supplied to the site.
  • the point where the primary measuring device (11) is connected to the mains cable (3) is herein termed as primary measuring point (10) .
  • the measured value (electrical current or power value, hereinafter termed as If) is then transmitted to a processing unit (20) , also termed herein as CPU (20) , by a transmission means (12, 15, 19) .
  • the said transmission means (12, 15, 19) comprises a transmitter (12) , a transmission media (15) and a receiver (19) .
  • the transmission can be wireless or wired.
  • a secondary measuring device (16) is used to measure how much electrical current or power is being drawn by the information receiving element (100) of the target device, for example an electric car charger.
  • the said secondary measuring device (16) is connected to a secondary measuring point (17) located on a power cable (18) .
  • This power cable (18) connects an installation outlet (7) of the installation to the target device through a connector (13) .
  • a calculation is executed to determine what is the maximum electrical current or power the car can use and this information in then transmitted via the communication and interface device (21) to the car charger.
  • a communication media (22) can be a proprietary system or an existing standard like J1772 and/or IEEE1901 and/or IEC62196.
  • the system also includes a timer module or clock module to allow enabling or disabling the electric current or power flow to the target device (like an electric vehicle) by transmitting the appropriate signal, on pre- established times, only enabling the battery charging for example at a specific time of the day.
  • a timer module or clock module to allow enabling or disabling the electric current or power flow to the target device (like an electric vehicle) by transmitting the appropriate signal, on pre- established times, only enabling the battery charging for example at a specific time of the day.
  • the CPU (20) is located in a remote data center (usually belonging to the generally- known concept of cloud) .
  • both the CPU (20) and the communication and interface device (21) are located in a remote data center.
  • target devices can be used at the same electrical installation, for example several vehicles can be charged at the same household or industrial installation.
  • system of the invention in such a way that repetition of some features is not necessary, namely features (10, 11, 12, 15, 20) can be shared by the multiple remaining features included in the unit (14) as shown in Fig. 2.
  • the calculation formula is the same, but the transmitted available electrical current or power to each of the target devices must be such that the total added sum equals I a .
  • the simplest way to transmit the available current or power to each target device is to divide I a equally amongst all, but other ways of splitting can also be used.
  • an intermediate (possibly previously existing) device may be arranged in between the unit (14) and the target device (100) as, for example, an existing wall box. All the operation is still the same but the communication and interface element (21) will communicate with the said intermediate device with an appropriate protocol that is supported by the intermediate device. In this way, the calculated value (available current or power I a will still be transmitted to the target device (100) but, in this case, through the intermediate (possibly previously existing) device.
  • the present invention is replicated to each phase, except the CPU (20) and the communication interface element (21) that are shared.
  • I a value is calculated in the same way. From the multiple calculated I a values (one for each phase) only the smallest is considered and subsequently transmitted to the target device (100) .
  • I a is the new calculated maximum electrical current or power value usable by the target device ;
  • I max is the maximum electrical current or power value allowed by the electrical installation limiting system ( 2 ) ;
  • Ich is the electrical current or power value measured at the secondary measuring point ( 17 ) that is being used by the electrical target device intended to be controlled .
  • the calculated value I a is the maximum electrical current or power the target device can draw without reaching the limiter threshold .
  • the expression [ 1 ] accomplishes the following principle : the available electrical current or power I a is obtained by subtracting the electrical current or power value If being currently drawn from the electrical installation, from the maximum electrical current or power value I max , subsequently added by the electrical current or power value Ich that is currently being used by the vehicle .
  • CPU ( 20 ) performs the calculation using expression [ 1 ] : I a
  • the vehicle charger can use up to 20 A without reaching the limit electrical current that would trip the limiting system of the household electrical installation .
  • the calculation is done cyclically to take into account household consumption changes that would vary the If value and, as such, that would allow to provide more or less electrical current or power to the target device without exceeding the maximum value Imax allowed by the electrical installation .
  • a cycle time can be set as low as possible depending on the processing ability and response time from the CPU ( 20 ) of the system of the invention .
  • the cycle time can be set above 300 seconds , because such range would be less demanding in terms of response times from the information receiving element ( 100 ) , but on the other hand such range could reveal to be excessively large to avoid the tripping of the limiter device from the domestic or industrial power supply installation .
  • the cycle time may be selected between 0 , 5 milliseconds and 300 seconds , preferably between 10 milliseconds and 120 seconds , more preferably between 100 milliseconds and 100 seconds , most preferably between 500 milliseconds and 10 seconds .
  • the system of the invention can be housed in one unit or housed in two or more separate units. Any or both of these units can be provided as an installation kit.
  • a first unit may be placed, for example, near the mains cable (3) , wherein this first unit comprises the primary measuring device (11) and the transmitter (12) .
  • a second unit (14) comprises the power cable
  • the receiver (19) is configured to receive data from the transmitter (12) .
  • the second unit (14) can be fixed to the charging site, configured for example as a wall box or can be portable. In the case of the portable embodiment, this conveniently includes the power cable (18) to be connected both to the target device (100) and to the installation outlet (7) .
  • the system is provided with a pre-established value of I a that will be used by the CPU (20) , such that the system of the invention can still allow the target device to draw the said pre-established value of I a in such a way that the target device charging may continue even taking the risk of tripping the limiting system (2) of the installation. While the invention is not working due to failure or malfunction, this measure allows the target device to draw a specific amount of current or power from the electrical installation as it would if no controlling process/system was installed . It should be noted that while the invention is described herein making reference to preferred embodiments , a plurality of changes or modi fications may be carried out by a person skilled in the art without departing from the scope of the invention defined in the appended claims .

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

La présente invention se rapporte à un processus de commande automatique de courant ou de puissance électrique disponible pour un dispositif cible connecté à une installation électrique, le processus consistant à définir une valeur Imax de courant ou de puissance électrique maximale autorisée par une installation électrique, et comprenant en outre au moins un cycle comprenant les étapes consistant : a) à mesurer une valeur de courant ou de puissance électrique totale If tirée de l'installation électrique et à mesurer une valeur de courant ou de puissance Ich tirée par un dispositif cible ; b) à calculer une valeur de courant ou puissance disponible Ia par soustraction de la valeur mesurée If de la valeur définie Imax et par ajout de la valeur mesurée Ich ; et c) à transmettre la valeur calculée Ia au dispositif cible. L'invention se rapporte également à un système et à un kit permettant la mise en œuvre du processus de l'invention. L'invention se situe dans le domaine de la gestion de puissance électrique et de la charge de véhicule électrique.
PCT/PT2022/050029 2021-10-28 2022-10-27 Processus, système et kit permettant la commande automatique de courant ou de puissance électrique disponible pour un dispositif cible connecté à une installation électrique WO2023075624A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PT117533 2021-10-28
PT11753321 2021-10-28

Publications (1)

Publication Number Publication Date
WO2023075624A1 true WO2023075624A1 (fr) 2023-05-04

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PCT/PT2022/050029 WO2023075624A1 (fr) 2021-10-28 2022-10-27 Processus, système et kit permettant la commande automatique de courant ou de puissance électrique disponible pour un dispositif cible connecté à une installation électrique

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1691336A2 (fr) 2005-02-15 2006-08-16 Oxley Developments Company Limited Appareil de surveillance d'utilisation
JP5168891B2 (ja) 2006-11-28 2013-03-27 日産自動車株式会社 電動車両充電電力マネジメントシステム
US20130141040A1 (en) * 2011-12-01 2013-06-06 Siemens Industry, Inc. Current monitoring and limiting apparatus, system and method for electric vehicle supply equipment
EP2518852B1 (fr) 2011-04-28 2018-01-17 Hitachi, Ltd. Appareil de surveillance et de commande de puissance et procédé de surveillance et de commande de puissance
US20180126860A1 (en) * 2016-06-14 2018-05-10 Faraday&Future Inc. Adaptive charging station for an electric vehicle
EP2335335B1 (fr) 2008-09-13 2020-07-08 Moixa Energy Holdings Limited Système de fourniture d'électricité, surveillance de l'utilisation, analyse, et améliorations de l'efficacité

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1691336A2 (fr) 2005-02-15 2006-08-16 Oxley Developments Company Limited Appareil de surveillance d'utilisation
JP5168891B2 (ja) 2006-11-28 2013-03-27 日産自動車株式会社 電動車両充電電力マネジメントシステム
EP2335335B1 (fr) 2008-09-13 2020-07-08 Moixa Energy Holdings Limited Système de fourniture d'électricité, surveillance de l'utilisation, analyse, et améliorations de l'efficacité
EP2518852B1 (fr) 2011-04-28 2018-01-17 Hitachi, Ltd. Appareil de surveillance et de commande de puissance et procédé de surveillance et de commande de puissance
US20130141040A1 (en) * 2011-12-01 2013-06-06 Siemens Industry, Inc. Current monitoring and limiting apparatus, system and method for electric vehicle supply equipment
US20180126860A1 (en) * 2016-06-14 2018-05-10 Faraday&Future Inc. Adaptive charging station for an electric vehicle

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