DE102012202688A1 - System for charging plug in vehicle, has web server to access power state information of user from communication unit and/or home data unit after receiving loading device information - Google Patents

Abstract

The system has electrical home network (1) having integrated charging device (2) for charging plug-in vehicle (5), and home data unit (6). The plug-in vehicle has communication unit (8). The loading device information between communication unit and home data unit is transmitted to a web server (10). The power state information of user is accessed and displayed by the web server from the communication unit and/or home data unit.

Description

The invention relates to a system comprising at least one electrical house network, a charging device integrated in the at least one electrical domestic network, at least one user of at least one plug-in vehicle, which can be charged to the at least one charging device by a home charging process.

A plug-in vehicle, which may be designed as a hybrid or electric vehicle, can usually be charged at different charging sources with electrical energy. Such charging sources may be, for example, wall boxes in the domestic area of the vehicle user or vehicle owner or charging stations in the public area. Both a conductive and an inductive charging method may possibly be used depending on the charging process and depending on the equipment of the vehicle optionally.

The prior art discloses in Scripture US 2010/0211340 A1 a system in which every single electric vehicle in an electric vehicle fleet can be charged. A fleet management portal that runs on a server manages the individual electric vehicles and monitors their charging processes.

It is an object of the invention to provide an improved system, comprising at least one electrical domestic network, a charging device integrated in the at least one electrical domestic network, at least one user of at least one plug-in vehicle, which can be charged to the at least one charging device by a home charging process, to describe.

This object is achieved by a system according to claim 1. Advantageous embodiments and developments of the invention will become apparent from the dependent claims.

According to the invention, the at least one electrical home network has a house data unit and the at least one plug-in vehicle via a communication unit and interchangeable charger information between the communication unit and the house data unit, the charging device information from the communication unit or the house data unit can be transmitted to a web server , and it is from the communication unit and / or from a data receiving device, energy status information of the at least one user from the web server retrievable and displayed.

Furthermore, the system is advantageously configured if the system comprises at least one public charging station, which has at least one charging station with a charging data unit, by which at least one user selects the at least one plug-in vehicle selectively on the at least one charging device by a home charging process or at least a charging station can be charged by a station charging operation, and charging station information is exchangeable at the at least one charging station between the communication unit and the charging data unit and the charging station information can be transmitted from the communication unit or the charging data unit to the web server.

It is particularly advantageous if the system comprises regenerative power generation devices, the system comprises non-regenerative power generation devices, a public power grid can be fed by the regenerative power generation devices and by the non-regenerative power generation devices that can supply at least one home electric grid from the public power grid by a home electricity provider, the at least one public charging station can be supplied via the public power grid by a station supplier with station power, from the home utility house power information can be transmitted to the house data unit and / or from the home utility house current information to the communication unit can be transmitted from the station supplier station current information to the load data unit and / / or from the station supplier station current information can be transmitted to the communication unit, the Hausstrominf information includes a home power mix information, and the station power information includes information about a station power mix.

According to a further embodiment of the invention, at least one decentralized, regenerative power generating device is integrated into the at least one electrical domestic network, which generates decentralized green power, feeds it into the domestic electrical network and can be monitored by the house data unit.

According to a further variant of the invention, during a home charging operation of the at least one plug-in vehicle on the charging device, a home charging power mix, which is included in the charging device information, can be determined by the house data unit.

It is particularly advantageous if the house current information comprises forecast data of the household electricity mix, from the house data unit prognosis data for the generation of decentralized electricity can be determined, a home-loading process can be controlled by the house data unit or the communication unit, based on the prognosis data of Domestic electricity mix and the forecast data for the generation of decentralized electricity of the home charging electricity mix can be optimized to a high proportion of renewable electricity or low electricity costs.

The invention includes a further variant according to which, during a station charging process of the at least one plug-in vehicle at the charging station, a station charging current mix, which is included in the charging station information, can be determined from the charging data unit.

This variant can be extended by an embodiment, according to which the station current information includes forecast data of the station power mix, a station charging process can be controlled by the charge data unit or the communication unit, and the station charging current mix can be optimized for a high proportion of regenerative power or for low electricity costs on the basis of the forecast data of the station power mix.

In addition, it is particularly advantageous if the web server aggregates charging device information from multiple user home loads and charging station information from multiple user station loads, the web server determines a total charging power mix from the aggregated charging device information and charging station information, and the total charging power mix is included by the user's power status information ,

According to a particularly preferred embodiment of the invention, the system comprises a plurality of users of the at least one plug-in vehicle or multiple users of multiple plug-in vehicles, and several charging devices of multiple house networks and multiple charging stations, wherein the energy status information of a user, the energy status information of each other user include.

The invention is based on the following considerations:
Plug-in vehicles log their charging state every 15 minutes during charging, for example via power line communication, ie via a charging cable, via the charging station, or a private router when charging at home to a back-end server. Likewise, this communication could alternatively take place via a radio module (GSM or UMTS) present in the vehicle.

It is based on an electric vehicle charging station for home use (also called "wallbox", secured at 32 A single-phase AC), is maintained by the mode-3 communication to the vehicle, and an integrated web server with LAN (or WLAN Connection) to the house router. Between the charging device and the vehicle is e.g. a power-line communication (PLC) according to the prior art.

The wallbox is integrated into an electrical house network, whereby the home network has a current sensor at a main house connection, which also communicates via PLC with the wallbox. A decentralized solar system also has its own current sensor with data forwarding via PLC to the wallbox.

To load the vehicle on the wallbox current power data from the house current sensor and solar power sensor are loaded and calculated an available current level for charging the vehicle from home consumption and feed to avoid overload in the house network.

The user can select a charging mode via a switch on the wallbox or via an internet portal on an integrated web server.

Charging control is provided by the wallbox, which may be control in instant charging, timed charging with charging cost minimization or timed charging with maximization of green power (e.g., from the home solar system).

If the user selects timed charging, the Wallbox via house router loads additional information from the Internet such as daytime electricity price tariffs or wind forecast data and solar time data for a green power forecast.

The web-based Internet portal offers the Wallbox constantly via the integrated web server, it can also be viewed via PC, smartphone app or Internet-enabled TV. Via the Internet portal, the charging data of the electric vehicle can be prepared for the vehicle user and presented in an appealing graphical form. This includes both a PC-based portal and the division into several applications (apps) for smartphones with different operating systems.

The web-based Internet portal can be viewed for example. Current energy consumption and charging current values of the vehicle in the daily, monthly and annual average through the data of the last 5 years. Furthermore, with time-controlled charging, an automatic adjustment of the weekly travel planner can take place with a calendar tool or a calendar app, so that the vehicle is always loaded when the desired journey starts.

The energy consumption and charging current values of the vehicle can also be used for Charging costs are charged, or used for optimal wind energy or solar energy feed.

The vehicle owner creates an added value through the comprehensive display of consumption data and load times of his vehicle via an Internet portal with user-friendly processing of data with graphical representation including calculation of statistical values. Through this evaluation in the form of an Internet portal, the vehicle owner receives a comprehensive overview of the charging processes, driven kilometers, energy consumed, use of renewable energy, smart grid integration, etc.

The vehicle user receives a tool that allows him to better use and eco-friendly charging by maximizing renewable energy and / or charging cost minimization. The data analysis and visualization can be made available to the user as a password-protected website. Reduced versions (subsystems) of the entire system can be offered as smartphone apps.

Hereinafter, a preferred embodiment of the invention will be described with reference to the accompanying drawings. This results in further details, preferred embodiments and further developments of the invention. In detail, show schematically

1 System for charging a plug-in vehicle on a home-network charging device or at a public charging station

2 Power status information for a home load

3 View of a smartphone application for the statistical evaluation of charging information

4 Aggregated power status information from multiple users

1 FIG. 1 illustrates a system for charging a plug-in vehicle (FIG. 5 ) with regard to energy flows and information flows. The plug-in vehicle is optionally available on a house-loading device ( 2 ) or at a public charging station ( 3 ) Can be charged with electrical energy. The house loader is in an electrical house network ( 1 ) integrated. If the home loader is designed for wired charging, it is also called a wallbox. The home loader may also be based on an inductive charging method.

A public charging station in this sense is to be understood as public, as it is intended to be accessible to everyone. For example, this may be a wired charging station on a supermarket parking lot or a parking space in an airport car park with inductive charging device.

The electrical home network is from a homeowner ( 16 ) via a public electricity grid ( 15 ) can be fed with electricity. This house stream ( 18 ) has a certain household electricity mix, which implicitly results from the feed-in of the utility company into the public power grid. As an example, the home electricity mix could be made up of 30% solar power, 30% wind power and 40% fossil power at a given time.

Information about the household electricity mix is transformed from the home utility to a household data unit ( 6 ) of the home network, for example via a TCP / IP connection. Additionally or alternatively, this house current information can also be sent to a communication unit of the plug-in vehicle via LTE, UMTS or GSM. Data connections are in 1 without restriction of generality indicated with dashed lines.

The electrical house network gem. 1 may additionally be provided via a decentralized energy generating device ( 20 ), which feeds electrical energy into the home network.

The domestic power mix is therefore variable, which is monitored by the house data unit. Such a decentralized power generation device may be, for example, a rooftop solar system or a small wind turbine.

The public charging stations are operated by one or several service providers ( 17 ) via the public power grid with station power ( 19 ) provided. The station current of a particular charging station at a certain point in time has a certain station power mix, which implicitly results from the feeding of the station supplier into the public power grid. As an example, the station power mix could be made up of 50% solar power, and 50% nuclear power at a given time.

Information about the station power mix is converted by the station supplier into a load data unit ( 7 ) of the charging station, for example via a TCP / IP connection. Additionally or alternatively, this station stream information may also be sent to a communication unit ( 8th ) of the plug-in vehicle. In this case, a radio data device of the vehicle via LTE, UMTS or GSM can be used.

A user of a plug-in vehicle may charge an energy storage of the vehicle with electrical energy by connecting the vehicle to one of the charging stations for charging. This connection can be conductive or inductive. Charging at a charging station is called station charging. During a station loading operation, there is data communication between the communication unit of the vehicle and the load data unit. The transmitted information is referred to as charging station information. Information contents of this charging station information can serve as control variables for the charging process. In particular, time-dependent information contents of the station current information are included in the charging station information during a charging process. In other words, this means that a station charging current mix of the plug-in vehicle can be determined during a station charging process on the basis of the station power mix. In this way, a reference of the charging current to a station charging operation is determined, for example, by the communication unit or the charging data unit via the station charging current mix. This allows a statement about the composition of the charged amount of electrical energy with respect to the type of generation of the charged current. This information is also included in the station stream information.

The station charging power mix can be specific to the vehicle, which can be authenticated via the charging station information, or to a user of the vehicle who is identifiable to the vehicle by, for example, a vehicle key assigned to him or a fingerprint authentication at the charging station. Also, specific user data is included in the charging station information.

The charging, the user, the vehicle can also perform a home-loading operation on a home charger. In the case of a wallbox is usually a wired connection. However, there are also inductive Hausladevorrichtungen conceivable that can be installed as fixed in a domestic garage. Charging on a home charger is called a station load. Typical for a home-loading process is the fact that the home-loading process takes place in the private living environment of the user. Even during a home charging operation, there is data communication between the communication unit of the vehicle and the charging data unit. The transmitted information is referred to as charging device information. Information contents of this charging device information can serve as control variables for the charging process. They also include user-authenticating and / or vehicle-authenticating information. In particular, the charging device information during a home charging operation includes time-dependent information contents of the home power information. In other words, this means that a home charging power mix of the plug-in vehicle can be determined during a home charging process based on the household electricity mix. For example, the home charging power mix may be indicated by the charging data unit or the communication unit.

As an example 2 that displays the home charging power mix at a particular time of a home load. The domestic electricity mix points to the end of the central arrow and is composed at the selected time to 100% of solar power. The tip of the central arrow indicates the further energy flow, according to which a share of 2% of the solar power is used to charge the vehicle. The home charging electricity mix consists at this time of 100% solar power of a certain current at a certain charging voltage, which is also included in the house current information. In this way, a reference of the home charging current to a home charging process is determined, for example, by the communication unit or the charging data unit via the home charging power mix by integration of current and voltage. This allows a statement about the composition of the invited amount of electrical energy in Ah with respect to the type of generation of the charged current, eg 80% solar power, 15% wind power and 5% fossil flow.

According to 1 the charging device information and the charging station information from the house data unit or the communication unit or from the charging data unit or the communication unit for each load to a web server ( 10 ) transmitted. Transmission may be via TCP / IP, Ethernet, LTE, UMTS, GSM, or similar. respectively. On the Web server, an aggregation of the data and a statistical evaluation of the transmitted data takes place. The statistics can be related to observation periods or a number of loading operations. In particular, such evaluation information may be provided by the communication unit or by another data device ( 6a ) as an Internet-enabled terminal in a web-based portal with personalized login. A variant as a smartphone app is useful.

• • Energieverbrauch in kWh/km, der dem Nutzer Anwender eine Übersicht über die Wirtschaftlichkeit seiner Fahrweise verschafft,
• • gefahrene Strecke pro Ladevorgang (oder pro Tag), die dem Nutzer eine Übersicht über seine Fahrverhalten bietet,
• • Verhältnis von Ansteckzeit (Zeitdauer, während welcher das Fahrzeug ladebereit ist und mit einer externen Energiequelle verbunden ist, sei es induktiv oder konduktiv) und Ladezeit (Zeitdauer während der Ansteckzeit, während welcher Ladestrom fließt) des Fahrzeugs je Ladevorgang, das dem Nutzer einen Überblick über das Potential der Ausnutzung von Ökostrom und/oder von günstigen Stromtarifen zu bestimmten Tageszeiten verschafft,
• • Nutzungsgrad von regenerativer Energiequellen (Solar, Wind, etc.) in Prozent der gesamten Ladeenergie, der dem Nutzer einen Überblick über dessen tatsächliche Nutzung regenerativer Energien verschafft,
• • Nutzungsverhältnis von Ladevorrichtung in Hausladevorgängen gegenüber öffentlichen Ladestationen, das dem Nutzer eine Übersicht über sein Ladeverhalten verschafft, und
• • Kosten für Ladeenergie (pro km oder bzw. pro Tag oder Monat), die dem Nutzer einen Überblick über dessen entstandene Energiekosten und einen Anreiz zur Kostenreduzierung durch Veränderung seines Fahr- und/oder Ladeverhaltens verschafft.

Contents of such evaluation information may be, for example

• • Energy consumption in kWh / km, which gives users an overview of the economic efficiency of their driving style,
• • distance traveled per charge (or per day), which gives the user an overview of his driving behavior,
• • Ratio of plug-in time (time during which the vehicle is ready to charge and connected to an external power source, whether inductive or conductive) and charging time (time during plug-in time, during which charge current flows) of the vehicle per charge, giving the user an overview about the potential of using green electricity and / or cheap electricity tariffs at certain times of the day,
• • degree of utilization of renewable energy sources (solar, wind, etc.) as a percentage of the total charging energy, which gives the user an overview of his actual use of regenerative energies,
• • utilization ratio of charging device in home charging operations compared to public charging stations, which provides the user with an overview of its charging behavior, and
• • Costs of charging energy (per km or per day or month), which gives the user an overview of the energy costs incurred and an incentive to reduce costs by changing his driving and / or charging behavior.

3 For example, it shows a view of evaluation information provided by a smartphone application from the web server. This view is related to the consumption of electric power of an electric vehicle per 100 km of the vehicle over the observation period of one year.

Another variant of this embodiment arises from aggregation of the charging device information and charging station information from multiple users and from multiple vehicles. In such a system with multiple home loaders, which need not necessarily be usable by each user, and with multiple charging stations, the data on the web server can be evaluated such that several users and / or multiple vehicles in the form of a community related become. An example is in 4 shown. Here, a view of the web-based portal is shown placing a particular user ("Me") in relation to a user of a parameter of the evaluation information over an observation period. In the example chosen, the relative proportion of user "Me" wind load current is shown across all house loads and station loads as compared to other users and their loads. The user "Me" may even have used different plug-in vehicles, since the evaluation of 4 related to the users and not to a particular vehicle. This may provide the user "Me" with incentives to optimize his own charging behavior with regard to increasing the share of solar power, eg by increased charging during the day on the charging device of the electrical domestic network, which is supported by a decentralized solar system, or by increased charging at one favorable wind forecast in the weather region of the house.

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• US 2010/0211340 A1 [0003]

Claims (10)

System comprising - at least one home electrical network ( 1 ), - a charging device integrated into the at least one electrical household network ( 2 ), - at least one user of at least one plug-in vehicle ( 5 ), which can be loaded on the at least one charging device by a home charging process, characterized in that - the at least one electrical domestic network via a house data unit ( 6 ), - the at least one plug-in vehicle via a communication unit ( 8th ), charging device information is exchangeable between the communication unit and the house data unit and the charging device information is transferred from the communication unit or the house data unit to a web server ( 10 ), and - by the communication unit and / or by a data receiving device ( 6a ) Energy status information of the at least one user from the web server can be retrieved and displayed. System according to claim 1, characterized in that - the system at least one public charging station ( 3 ), - the at least one charging station via a charging data unit ( 7 ) - by which at least one user selectively charges the at least one plug-in vehicle to the at least one charging device by a home charging operation or the at least one charging station by a station charging operation, and - to the at least one charging station between the communication unit and the charging data unit Charging station information are interchangeable and the charging station information from the communication unit or the loading data unit can be transmitted to the Web server. System according to claim 1 or 2, characterized in that - the system comprises regenerative power generation devices ( 13 ) and / or non-regenerative power generation facilities ( 14 ), - a public electricity grid ( 15 ) can be fed by the regenerative power generation devices and by the non-regenerative power generation devices, the at least one electrical domestic network from the public power grid is supplied by a home supplier ( 16 ) with house electricity ( 18 ), - the at least one public charging station connected to the public electricity grid by a substation supplier ( 17 ) with station current ( 19 ) can be supplied, - from the home utility home electricity information to the house data unit can be transmitted and / or home electricity information to the communication unit can be transmitted from the homeowner, and - are transmitted from the station supplier station current information to the load data unit and / or Stationsstromorger station current information to the communication unit can be transmitted - the house current information includes information about a home power mix, and - the station current information includes information about a station power mix. System according to one of claims 1-3, characterized in that - at least one decentralized, regenerative power generation device ( 20 ) is integrated in the at least one electrical home network, which decentralized ( 21 ) generated and fed into the electrical home network, - the at least one decentralized, regenerative power generation device is monitored by the house data unit. System according to claim 4, characterized in that - That during a home charging of the at least one plug-in vehicle on the charging device from the house data unit a Hausladestrommix can be determined, and - The home charging electricity mix is covered by the charging device information. System according to claim 3, characterized in that During a station charging operation of the at least one plug-in vehicle at the charging station, a station charging current mix can be determined from the charging data unit, and - The Stationsladestrommix is included by the charging station information. System according to claim 5 or 6, characterized in that The web server aggregates charging device information from multiple user home loads and charging station information from multiple station loads of the user, The web server determines a total charging power mix from the aggregated charging device information and charging station information, and - The total charging power mix is included by the user's power status information. System according to claim 5, characterized in that - the house current information comprises forecast data of the household electricity mix, - prediction data for the generation of decentralized electricity can be determined by the house data unit, - A home charging by the house data unit or the communication unit is regulated, - Based on the forecast data of the domestic power mix and the forecast data for the generation of decentralized electricity of the home charging electricity mix can be optimized to a high proportion of renewable electricity or low electricity costs. System according to claim 6, characterized in that The station stream information comprises forecast data of the station stream mix, A station charging process is controllable by the charging data unit or the communication unit, - Based on the forecast data of Stationsstrommixes the Stationsladestrommix can be optimized for a high proportion of renewable electricity or low electricity costs. System according to one of claims 7 to 9, characterized in that The system comprises several users of the at least one plug-in vehicle or multiple users of several plug-in vehicles, The system comprises several charging devices of several house networks, - the system includes several charging stations, The energy status information of one user comprises the energy status information of each other user.

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