DE102011057001A1 - Energy supply system and method for performing an energy transfer - Google Patents

Abstract

Energy supply system having at least - a first energy transfer unit, - a second energy transfer unit, - a power control module, - a power release module and - an information module, wherein the energy release module with the information module has a common interface, which is designed for bidirectional communication and the energy control module with the energy release module common interface and wherein the energy control module is designed such that it performs energy transfer for a predetermined amount of energy between the first energy transfer module and the second energy transfer module only after receiving an enable signal from the power release module.

Description

The invention relates to a power supply system and a method for performing an energy transfer.

For the purchase of energy in public space, eg. B. for powering electric cars, is nowadays almost exclusively by the fact that the customer / user connects his energy storage / consumer to an energy delivery station and z. B. identified by credit card at the power delivery station and thereby the energy transfer from the power delivery station to the energy storage / consumer is started. The billing of the energy used will be done later.

The disadvantage of such a system is that no further safety testing takes place. This means that it is not checked whether the energy delivered by the station also arrives at the energy store to be charged. In an electrical power supply station, for example, it is not possible to detect the illegal energy extraction by, for example, a parallel connected further power consumers and then interrupt the power supply.

Likewise, such systems only allow the rigid charging of an energy store until it is either completely charged, or the transmission by z. B. the customer / user is manually interrupted. A flexible exchange of energy between energy delivery station and energy storage is therefore not possible.

It is therefore an object of the present invention to provide a system and a method which avoid at least the above-mentioned disadvantages and enable safe energy transmission.

This object is achieved inter alia by a power supply system having the features of claim 1 and a method of performing an energy transfer having the features of claim 18. Advantageous developments of the energy supply system and the method for performing an energy transfer are the subject of the dependent claims.

• – eine erste Energietransfereinheit (M01),
• – eine zweite Energietransfereinheit (M02),
• – ein Energiekontrollmodul (M03),
• – ein Energiefreigabemodul (M04) und
• – ein Informationsmodul (M06) auf, wobei

das Energiefreigabemodul (M04) mit dem Informationsmodul (M06) eine gemeinsame Schnittstelle aufweist, die für eine bidirektionale Kommunikation ausgebildet ist und wobei das Energiekontrollmodul (M03) mit dem Energiefreigabemodul (M04) eine gemeinsame Schnittstelle aufweist und wobei das Energiekontrollmodul (M03) derart ausgebildet ist, dass es erst nach einem Empfang eines Freigabesignals vom Energiefreigabemodul (M04) einen Energietransfer für eine vorbestimmte Energiemenge zwischen dem ersten Energietransfermodul (M01) und dem zweiten Energietransfermodul (M02) durchführt.In one embodiment, the power supply system at least

• A first energy transfer unit (M01),
• A second energy transfer unit (M02),
• - an energy control module (M03),
• A power release module (M04) and
• - An information module (M06), wherein

the energy release module (M04) having the information module (M06) has a common interface, which is designed for bidirectional communication and wherein the energy control module (M03) with the energy release module (M04) has a common interface and wherein the energy control module (M03) is formed in that it performs energy transfer for a predetermined amount of energy between the first energy transfer module (M01) and the second energy transfer module (M02) only after receiving an enable signal from the power release module (M04).

According to the invention, for carrying out an energy transfer between a first energy transfer unit (M01) and a second energy transfer unit (M02), these are connected via an energy control module (M03). At least the identity of one of the energy transfer units is transmitted to the energy control module (M03) and at least the value of a certain amount of energy is transferred to the energy control module (M03). A release signal is transmitted from the energy release module (M04) to the energy control module (M03), after the transmission of the release signal at least the determined amount of energy being transferred from one of the energy transfer units to the other energy transfer unit by means of the energy control module (M03) within a predetermined time ,

The individual components of the energy supply system can also be designed as units of two or more individual components.

One of the energy transfer units can be designed as a pure energy consumer without energy storage, as an energy consumer with energy storage or as a pure energy storage. For example, since the energy transfer between both energy transfer units is possible in both directions, the latter embodiment makes it possible to store energy when it is cheap and to return it when it is expensive. The respective other energy transfer unit is connected to an energy supplier.

The energy transfer between the at least two energy transfer units can take place either continuously or discontinuously. Specifically, this means that in discontinuous operation, the release takes place only for certain amounts of energy, such. B. in 100 Wh intervals or in time intervals, such as. At 10 second intervals, and thereafter a certain amount of energy is released again. Likewise, breaks can be provided between the individual energy transfers.

The system thus enables extremely flexible energy transfer between at least two energy transfer units, whereby both direction, Timing and energy transfer can be determined.

The energy release module (M04) can be used as both a mobile communication device, such as a mobile communication device. As a smartphone with application, or as a stationary device that is provided by one of the energy transfer units may be formed.

The communication between the energy control unit (M03) and the energy release module (M04) or between the energy release module (M04) and the information module (M06) can be both wired and wireless and can be bidirectional. Corresponding interfaces are for example Bluetooth, mobile radio connections (EDGE, GPRRS, UMTS etc.), WLAN or Powerline Communication (PLC). The communication between the individual components can optionally be encrypted.

According to one embodiment of the invention, the energy control module (M03) finds out, by means of the energy release module (M04), the information module of its energy supplier responsible for one of the energy transfer units. For example, one of the energy transfer units may have a unique identifier (eg, IPv6) that allows the energy control module (M03) to use the energy release module via, for example, a database network, e.g. For example, similar to a DNS (Domain Name Service), find out for one of the energy transfer units responsible information module (M06). An energy transfer unit can be supplied by several energy suppliers. In this case, the enable signal of an information module (M06) of an energy supplier of one of the two energy transfer units is received by the energy release module (M04).

In a particularly advantageous development of the method, the energy control module (M03) generates transferred energy units from one energy transfer unit to the other code managed by the energy control module (M03) or the energy release module (M04) and to receive energy from each entitle other energy transfer unit and which can be billed via the information module (M06) of the energy supplier of one of the two energy transfer units.

In an advantageous development of the energy supply system according to the invention, at least one of the energy transfer units (M01) or (M02) has an energy meter to measure the energy transmitted between the two energy transfer units.

• a) den resultierenden Energietransfer, wobei der Transferzeitraum eine oder mehrfache Transferpausen beinhalten kann,
• b) die aktuelle Leistungsaufnahme, und
• b) den Zeitverlauf der Leistungsaufnahme nach der ersten Freigabe des Energiekontrollmoduls (M03) durch das Energiefreigabemodul (M04).

In a further advantageous development, the energy control module (M03) has an energy consumption counter. Thus, the energy control module can measure and evaluate the transmitted energy with respect to

• a) the resulting energy transfer, whereby the transfer period may include one or more transfer breaks,
• b) the current power consumption, and
• b) the time course of the power consumption after the first release of the energy control module (M03) by the energy release module (M04).

In order to record measurements and evaluations, the energy control module can also have a recording memory.

On the basis of the current power consumption, the time course of the power consumption, the resulting energy transfer or the comparison with reference data for the energy-receiving energy transfer unit, the energy control module (M03) can interrupt the energy transfer between the first and the second energy transfer unit.

Such reference information can be provided in addition to a memory of the energy control module (M03), for example by the information module (M06) and / or the energy release module (M04), with which the energy control module has a common interface.

If the energy transmissions are interrupted by the energy control module, a notification can also be generated in a further embodiment. This can, for. B. to those responsible of the two energy transfer units or to those responsible of the energy supplier.

With the energy supply system according to the invention, it is thus possible to ensure a secure energy supply, since an energy transfer takes place only after release by the energy release module (M03) and the energy transfer through the energy release module (M03) can be interrupted upon detection of a deviation. In addition, an immediate information of responsible persons by the system is possible.

In the presence of at least one further energy consumption meter in at least one of the at least two energy transfer units (M01) and (M02), the current power consumption, the power consumption time curves or the resulting energy transfers of the energy control module (M03) and at least one of the energy transfer units in the energy control module (M03) can also be compared and in the event of discrepancies Energy transfer interrupted and additionally generated a message.

• a) elektrischer Energie,
• b) einer oder mehrer Flüssigkeiten,
• c) eines oder mehrer fossiler Brennstoffe,
• d) eines oder mehrer Gase, und
• e) eines oder mehrer Produkte aus den vorhergehenden Kategorien.

The previously described generally power supply systems and methods for performing an energy transfer are suitable for. B. for the transfer

• a) electrical energy,
• b) one or more liquids,
• c) one or more fossil fuels,
• d) one or more gases, and
• e) one or more products from the preceding categories.

Hereinafter, the prior art and a concrete embodiment will be explained with reference to the figures.

Show it:

1 a schematic embodiment of the prior art.

2 a scheme for two embodiments of the method according to the invention.

1 shows a current system for the purchase of electrical energy in public space, often referred to as "charging station" in the context of electric mobility.

The user has either by mobile device (smartphone, tablet PC, etc.) in the portal of the power system operator or by identification over z. B. Credit card or PIN at the charging station to identify. Via an information and management system connected to the power supply station, the identity of the user is determined in order to start the energy transfer from the power supply station to the customer's vehicle. Through an online billing system, the transferred amount of energy is sourced from the energy market and charged to the customer, eg. B. by debiting the credit card.

Such a system is characterized in that the energy transfer only from the power supply station to the customer's vehicle is possible and only the function of charging the vehicle is possible. Moreover, such a system is inherently at a disadvantage in that no further security checks follow after identification of the identity.

It is thus not possible to check whether an illegal energy storage / consumer instead of the customer's vehicle is connected to the power supply station or whether another energy storage / consumer is clamped in parallel, since the customer during the charging time (up to several hours ) will usually remove from the vehicle. The customer will therefore only after re-arrival or after billing found that something is wrong. There is no way to prevent illegal energy transfer to the third party beforehand.

2 shows the scheme for two embodiments of the method according to the invention.

A first, very specific embodiment is the charging process for an electric car.

There are charging stations everywhere (M01), which are operated by energy suppliers (M05) or other companies or private providers. When a driver of an electric vehicle (M02) comes to the charging station (M01), he connects the electric car (M02) to the charging station (M01) so that the energy control module (M03) in the charging cable between the electric car (M02) and the charging station (M01) located.

The energy control module (M01) now communicates via PLC with the charging station (M01) in order to determine its identity (eg serial number or IPv6). On the other hand, it communicates with the vehicle (M02) to know what amount of energy can be recharged maximum. The driver uses an application on his smartphone (M04) and receives via Bluetooth the reload and the identity (serial number, IPv6) of the charging station. The application on the smartphone (M04) looks for the identity details of the charging station on the Internet and finds out that this is a private provider that has contracts with two energy suppliers E1 and E2.

The application also shows that E1 has 10% off the daily rate from 20:00 to 22:00, while E2 does not offer it today, offering a 30% price reduction from 23:00 onwards. After the driver certainly does not return before 22:30, and most likely even later, E1 is selected to reach 30% of battery capacity by 22:00 and E2 is selected from 23:00 to get the battery as full as possible.

In order not always have to do a complex calculation manually, the driver has simply set on the application that by 22:00 at the latest the battery capacity for a ride of 40 km must be sufficient and no later than 7:00 in the morning the battery must be full again. On the basis of this information, the application on the smartphone (M04) downloads access authorizations for, for example, 3 kWh of E1 and 6 kWh of E2 via a data connection (eg UMTS) and transfers them to the energy control module (M03). After this is imperceptibly done for the driver in just under 1 second, the driver leaves the vehicle (M01).

The energy control module (M03) has now no longer available the smartphone (M04) as a connection to the Internet, but does not need that, since it can now work autonomously. The control module now starts the PLC-based encrypted communication with the charging station and transmits the authorization for the first kWh. If the charging station (M01) receives the correct code for its identity and for E1, the energy transfer from the charging station (M01) to the vehicle (M02) is started and an energy meter integrated in the charging station (M01) starts to measure.

On the one hand, the energy control module (M03) checks the current flow with an integrated current and voltage measuring device and compares its value with the charging station (M01) via encrypted communication. If a difference arises here, it is recognized that someone has manipulated (eg by cutting the cable) another consumer between himself and the charging station (M01) has switched.

As a result, the charging station (M01) is instructed to stop the energy transfer and to give a tampering message. The manipulation message goes to the operator of the charging station and can also be forwarded to the driver if appropriate information is stored. If the charging station does not support this, the energy control module (M03) will no longer transfer any further entitlements to the charging station (M01) and the damage will affect at most one entitlement unit.

At the same time, the energy control module (M03) controls the energy flow in relation to its time course. If this differs from the stored profile or the profile boundaries, then also in this case the energy transfer will be terminated on suspicion of manipulation. Such events as well as the actual charged energy, as well as the profiles can be cached for later use and made available to the driver.

The energy control module (M03) can be arranged as described in the charging cable, but also integrated in the charging station (M01) or integrated in the vehicle (M02). The smartphone (M04) or a similar device can also be mounted together with the energy control module (M03), so that it is for example vehicle-bound and not driver-bound. An auto-bound solution is, for example, suitable for vehicles with fixed drivers. Driver-connected solutions are suitable, for example, for rental vehicles.

Another embodiment of the in 2 Scheme illustrates the use of commuter vehicles to balance peaks in energy consumption during a day.

After arriving at the workplace in the morning, the commuter makes the input via the energy release module (M04) that the vehicle must be fully charged from 16:00 and in the meantime the charge level does not matter and transmits this to the energy provider's information module (M06) ( M05) of the charging station (M01). In this case, the energy control module (M03) transmits the information to the charging station (M01) that 15 kWh (equivalent to 2/3 of the battery capacity) is stored in the vehicle (M01).

Thus, the energy provider (M05), for example, relate the remaining energy of the vehicle battery and the energy control module (M03) handed over energy reference units, for example, at lunch time rated at 150%, since there is an increased demand for energy at this time of day and the energy supplier to cushion the energy peaks otherwise peak load power plants would have to start.

After the end of the lunch time, for example 14:00 or earlier from the energy at a rating of 100% or a user-defined value, the energy control module (M03) initiates energy from the charging station (M01) to the vehicle (M02). is transferred to fully load this by 16:00. Starting from a 2/3 filled battery before noon and a full discharge at midday followed by a full charge until 4:00 pm, the driver will receive a fully charged vehicle (M02) at 4:00 pm free of charge. The energy supplier (M05), on the other hand, has the advantage that it needs fewer power stations for peak power at midday, as there are a great many commuters, whose car batteries can be used in this way.

Claims (35)

Energy supply system comprising at least: - a first energy transfer unit (M01), - a second energy transfer unit (M02), - a power control module (M03), - a power release module (M04) and - an information module (M06), wherein the power release module (M04) with the information module (M04) M06) has a common interface, which is designed for a bidirectional communication and the energy control module (M03) with the energy release module (M04) has a common interface and wherein the energy control module (M03) is designed such that it only after receiving an enable signal from the Energy release module (M04) an energy transfer for a performs predetermined amount of energy between the first energy transfer module (M01) and the second energy transfer module (M02). Energy supply system according to claim 1, wherein at least two of the listed components are combined in one unit. Power supply system according to one of claims 1 or 2, characterized in that at least one of the energy transfer units (M01) or (M02) comprises a power consumption meter. Energy supply system according to one of the preceding claims, characterized in that the energy control module (M03) comprises a power consumption meter. Energy supply system according to claim 4, characterized in that the energy control module (M03) has a recording memory. Energy supply system according to one of the preceding claims, characterized in that the common interface of energy control module (M03) and energy release module (M04) is formed wirelessly. Energy supply system according to one of claims 1 to 5, characterized in that the common interface of energy control module (M03) and energy release module (M04) is formed wired. Energy supply system according to one of the preceding claims, characterized in that the common Schnittstellte of energy release module (M04) and information module (M06) is formed wirelessly. Energy supply system according to one of claims 1 to 7, characterized in that the common Schnittstellte of energy release module (M04) and information module (M06) is formed by wire. Energy supply system according to one of the preceding claims, characterized in that the energy release module (M04) is designed as a mobile communication device. Energy supply system according to one of the preceding claims, wherein at least one energy transfer unit is designed as an energy storage. Energy supply system according to one of the preceding claims, characterized in that at least one energy transfer unit with a power supplier (M05) is connected. Energy supply system according to one of the preceding claims, characterized in that the communication of energy release module (M04) with information system (M06) or with energy control module (M03) is completely or partially encrypted. Power supply system according to one of claims 1 or 2, characterized in that energy from the energy transfer unit (M02) via the energy control module (M03) and the energy transfer unit (M01) to the energy supplier (M05) is transferred. Energy supply system according to one of the preceding claims for the transfer of electrical energy. Energy supply system according to one of claims 1 to 13 for the transfer of one or more liquids. Energy supply system according to one of claims 1 to 13 for the transfer of one or more fossil fuels. Energy supply system according to one of claims 1 to 13 for the transfer of one or more gases. Energy supply system according to one of claims 1 to 13 for the transfer of two or more products from the groups listed in claims 15 to 18. Method for carrying out an energy transfer between a first energy transfer unit (M01) and a second energy transfer unit (M02) in which after connecting the first and the second energy transfer unit via an energy control module (M03) at least transmit the identity of one of the energy transfer units to the energy control module (M03) is transmitted, at least the value of a certain amount of energy to the energy control module (M03) and a release signal from a power release module (M04) to the power control module (M03) is transmitted, wherein after transmitting the enable signal at least the determined amount of energy within one to a predetermined Time is transferred from one of the energy transfer units to the other energy transfer unit by means of the energy control module (M03). The method of claim 20, wherein at least one power transfer unit is connected to a power supplier. Method according to one of the preceding claims, characterized in that the energy transfer takes place continuously. Method according to one of claims 20 to 21, characterized in that the energy transfer takes place discontinuously. Method according to one of the preceding claims, characterized in that the energy control module (M03) records the current power consumption, the time curve of the power consumption or the resulting energy transfer for controlling the energy transfer. Method according to Claim 24, characterized in that the energy control module (M03) can interrupt the energy transfer between the first and the second energy transfer unit as a function of the current power consumption, the time course of the power consumption or the comparison with reference data for the energy-receiving energy transfer unit. The method of claim 25, wherein the reference data is provided by the information module (M06) or the power release module (M04). A method according to claim 25 or 26, wherein a notification is generated after interruption of the power transfer. Method according to one of the preceding claims, characterized in that the energy control module (M03) finds out, by means of the energy release module (M04), the information module (M06) of its energy supplier responsible for one of the energy transfer units. The method of claim 28, wherein the enable signal is received from an energy module (M06) of a power supplier of one of the two power transfer units by the power enable module (M04). Method according to one of Claims 28 and 29, in which codes generated by the energy control module (M03) or the energy release module (M04) are generated for transferred energy quantities from one energy transfer unit to the other energy transfer unit from the energy control module (M03) and which contains an energy transfer unit for Authorization of energy by the respective other energy transfer unit and can be charged via the information module (M06) of the energy supplier (M05) of one of the two energy transfer units. Method according to one of claims 20 to 30 for the transfer of electrical energy. Method according to one of claims 20 to 30 for the transfer of one or more liquids. A method according to any one of claims 20 to 30 for the transfer of one or more fossil fuels. Method according to one of claims 20 to 30 for the transfer of one or more gases. Method according to one of claims 20 to 30 for the transfer of two or more products from the groups listed in claims 31 to 34.

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