Classifications

• • G—PHYSICS
  • G08—SIGNALLING
  • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
  • G08C19/00—Electric signal transmission systems
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04B—TRANSMISSION
  • H04B3/00—Line transmission systems
  • H04B3/54—Systems for transmission via power distribution lines
  • H04B3/548—Systems for transmission via power distribution lines the power on the line being DC
• • 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
• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
  • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
  • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
  • H01M10/00—Secondary cells; Manufacture thereof
  • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
  • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
  • H01M10/4257—Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
  • H04L1/00—Arrangements for detecting or preventing errors in the information received
  • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04Q—SELECTING
  • H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
  • H01M10/00—Secondary cells; Manufacture thereof
  • H01M10/05—Accumulators with non-aqueous electrolyte
  • H01M10/052—Li-accumulators
  • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
  • H01M10/00—Secondary cells; Manufacture thereof
  • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
  • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
  • H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
  • H01M10/00—Secondary cells; Manufacture thereof
  • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
  • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
  • H01M2010/4278—Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
  • H01M2220/00—Batteries for particular applications
  • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04B—TRANSMISSION
  • H04B2203/00—Indexing scheme relating to line transmission systems
  • H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
  • H04B2203/5404—Methods of transmitting or receiving signals via power distribution lines
  • H04B2203/5416—Methods of transmitting or receiving signals via power distribution lines by adding signals to the wave form of the power source
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04B—TRANSMISSION
  • H04B2203/00—Indexing scheme relating to line transmission systems
  • H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
  • H04B2203/5429—Applications for powerline communications
  • H04B2203/5445—Local network
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04Q—SELECTING
  • H04Q2209/00—Arrangements in telecontrol or telemetry systems
  • H04Q2209/80—Arrangements in the sub-station, i.e. sensing device
  • H04Q2209/82—Arrangements in the sub-station, i.e. sensing device where the sensing device takes the initiative of sending data
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
  • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
  • Y02E60/10—Energy storage using batteries
• • 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

Definitions

• the present invention relates to a method for data transmission via a battery connection, to a corresponding device and to an energy store and to a corresponding computer program product.
• the present invention provides a method for data transmission via a battery connection, furthermore a device for data transmission via a battery connection, which uses this method, and an energy store with a corresponding device and finally a corresponding computer program product according to FIGS
• Energy and information can be transmitted on an electrical line.
• a sufficient signal strength is required, which makes the information before other oscillations or signals on the electrical conductor or the electrical line recognizable.
• the invention is based on the recognition that a data block can advantageously be transmitted and / or received within a gap between interfering signals or oscillations.
• Sending on a gap allows the data to be sent at a low signal level.
• the signal-to-noise ratio is very large, so that a large amount of data can be transmitted over the line in a technically very simple and low-error manner. Communication is possible despite large interference amplitudes. Due to the low signal level results in a reduced
• the present invention provides a method for data transmission via a battery terminal, wherein the data transmission of at least one interference pulse is disturbed, the method comprising the following step:
• Interference pulse is sent and / or received.
• the present invention provides a device for
• Embodiment of the invention in the form of a device the object underlying the invention can be solved quickly and efficiently.
• the present invention further provides an energy store with a device according to the approach presented here.
• a data transmission can be understood as meaning a communication of two devices, for example a transmitter with a receiver.
• the transmitter can send a signal and the receiver can receive the signal. Signals can be transmitted in both directions.
• the signal can cover a distance between the transmitter and the receiver.
• a battery terminal may be an electrical conductor connected to a pole of a battery.
• the battery connection can be a DC-carrying line.
• An interference pulse can, for example, a strong change in level of an electric current flow within a time window on the
• the glitch may include several consecutive level changes or oscillations.
• the vibrations can be subdued and subside.
• a data packet may have a predetermined length.
• the data packet can comprise several blocks.
• Data packets can be transmitted and / or received consecutively.
• a time offset may be a delay that is waited for the glitch until the data packet is sent and / or received.
• Energy storage can be a battery or a battery cell.
• a device can be understood as meaning an electrical device which processes sensor signals and outputs control and / or data signals in dependence thereon.
• the device may have an interface, which may be formed in hardware and / or software.
• the interfaces can be part of a so-called system ASIC, for example, which contains a wide variety of functions of the device.
• the interfaces are their own integrated circuits or at least partially consist of discrete components.
• the interfaces may be software modules that are present, for example, on a microcontroller in addition to other software modules.
• the skew may be determined using a predetermined threshold of a signal level of the glitch. After a pulse spike of the interference pulse can be waited with the transmission and / or reception until the glitch has subsided below the limit. Thereby, it is possible to transmit with a low transmission power and data packets with a low signal level can be received.
• the time offset can be determined depending on a maximum level of the interference pulse.
• the time offset may be greater when the maximum level is large.
• the time offset may be smaller when the maximum level is small.
• the length of the time offset can be determined in advance by a trial for a plurality of maximum levels, for example.
• the time offset to be used can be read, for example, from a table (look-up table).
• Time offset can also be determined by a processing rule.
• the time offset can be immediately following a passage of the
• Time offset Information about the time offset can be extracted from the data packet.
• the time offset can be controlled by a central control unit.
• the time offset can be transmitted to several users of the method simultaneously.
• the time offset by means of a
• Trigger pulses are triggered on the battery line.
• the method may include a step of determining a time duration between the glitch and another glitch, wherein in the step of transmitting and / or receiving the data packet, a time offset not greater than the time duration is used.
• the further interference pulse can be
• the data packet may be sent and / or received in the middle between two glitches.
• the method may include a step of affecting a time of occurrence of the noise pulse. Under an influence can one
• Glitch can be triggered by means of a trigger signal. As a result, for example, a predetermined time for the communication can be kept free.
• the time can be synchronized with a frequency reference.
• a frequency reference can be a system clock.
• the transmission and / or reception can be synchronized to the frequency reference.
• the interference pulse and the transmission and / or reception can be triggered alternately.
• Hard disk memory or an optical memory can be stored and for carrying out the method according to one of the above
• Embodiments is used when the program product is executed on a computer or a device.
• FIG. 1 shows an illustration of a battery with devices for data transmission via a battery connection according to an exemplary embodiment of the present invention
• FIG. 2 is a flowchart of a method for data transfer via a battery terminal that is disturbed by an interfering signal according to an embodiment of the present invention
• FIG. Fig. 3 is an illustration of a drive system with a battery according to a
• Fig. 4 is an illustration of glitches with interposed
• Data packets transmitted by means of a method for data transmission via a battery connection according to an embodiment of the present invention are transmitted by means of a method for data transmission via a battery connection according to an embodiment of the present invention.
• FIG. 1 shows a representation of a battery 100 with devices 102 for data transmission via a battery connection 104 in accordance with FIG. 1
• the devices 102 are in This embodiment is arranged within battery cells 106 of the battery 100.
• battery cells 106 In Fig. 1, four series-connected, identically designed battery cells 106 are exemplified within the battery 100.
• the battery 100 may also include more or fewer battery cells 106.
• an electrochemical storage element 108 is arranged within the battery cell 106.
• the memory element 108 has a positive pole and a negative pole, which are led through a sheath of the battery cell 106. Outside the battery cells 106, the poles are connected to the DC line 104. Between the positive pole and the negative pole, the device 102 is connected. The device 102 is configured to transmit data from the battery cell 106 via the line 104. Sensors and data processing devices in the battery cell 106 are not shown.
• the battery 100 has a control unit 110 which has a device 12 which is designed to communicate with the devices 102 via the DC line 104 via a method according to the approach presented here. For example, the controller 1 10 can query a cell state of the individual battery cells 106.
• the controller 1 10 and the device 1 12 are connected to the DC line 104 for this purpose.
• the controller 1 10 is connected between the positive pole and the negative pole of the battery 100.
• the controller 110 may communicate with other devices external to the battery 100 via battery connector 104.
• the devices may also have devices according to the approach presented here.
• Fig. 1 shows a battery 100, in which electronic components 102 are configured, synchronous to interference sources on the
• the battery 100 can be used as a lithium ion accumulator, for example, as a traction battery 100 for
• Electric vehicle EV
• hybrid electric vehicle HEV
• the battery 100 in particular as a traction battery of EV / HEV, the
• the monitored at least during charging and / or discharging has electronic components 102 configured to synchronize data with sources of interference (loads, particularly an inverter or motor, especially during charge / discharge) via the pole terminals, or power connection lines 104, of the battery cells 106 exchange.
• sources of interference loads, particularly an inverter or motor, especially during charge / discharge
• the devices 102 is a Method, which allows this interference-synchronous data transmission within the battery 100 executed.
• the synchronization can be done by a master transceiver 110.
• the master transceiver 110 can advantageously but not necessarily be arranged in the control unit.
• the synchronization pulse of the master which serves to synchronize the communication among the nodes, is itself synchronized to the pauses between the noise pulses. In particular, this is advantageous when a TDMA method is used to control the communication in which the communication of the nodes is timed.
• Each node can autonomously synchronize its transmission window to the interference pauses.
• this is advantageous if a method such as CDMA is used for regulating the communication, in which the communication of the nodes can also take place simultaneously or without central control.
• the synchronization can be done at the system level by deriving the clocks for the communication and / or inverter control from a common
• the synchronization to the sources of interference can be done by a self-learning
• the oscillators of the transceivers are kept synchronous by means of the PLL on the interference pulses (and thus also on the pauses). This can be done centrally in the master 1 10 or separately in each transceiver.
• the communication master 110 may assign specific communication slots to the nodes depending on local noise level variations within the battery. Nodes, which are exposed due to their location low noise levels, can basically get less favorable slots in time close to the interference pulse, whereas nodes, which are exposed to high noise levels due to their location, can be assigned the cheap slots in the interference-free window, this can in particular the slots towards the end be the trouble-free time when the disturbances have subsided maximally.
• 2 shows a flow diagram of a method 200 for transmitting data over a DC-carrying line or a battery terminal that is disturbed by an interfering signal, according to an embodiment of the present invention.
• the method comprises a step 202 of sending and alternatively or additionally receiving at least one data packet via the line.
• the data packet becomes a time offset to a
• Noise pulse of the interfering signal sent and received alternatively or in addition.
• the interference pulses of the interference signal have regular time intervals. At intervals, a signal level on the line is low.
• the glitches may result from switching within power devices that convert the DC power to AC power
• FIG. 2 shows a method 200 for the interference-synchronized communication via a power line within a battery.
• the method 200 enables a disturbance-synchronous data transmission within a battery.
• the battery can also exchange data via Powerline Communication (PLC).
• PLC Powerline Communication
• the battery can be equipped with an integrated battery sensor
• the communication can be synchronized with system clocks such as an inverter drive.
• FIG. 3 shows a schematic representation of a drive system 300 with a battery 100 according to an embodiment of the present invention.
• the battery 100 is connected to an inverter 302 via the DC line 104.
• the inverter 302 is connected to a three-phase motor M via a three-wire line 304.
• the DC voltage of the battery 100 is converted into a three-phase AC voltage in the inverter 302.
• Three-phase AC voltage is conducted via the three-wire line 304 to the three-phase motor M, where the three-phase AC voltage drives a rotor of the motor M.
• the inverter 302 In order for the inverter 302 to provide the three-phase AC voltage, the DC voltage is generated in a plurality of
• the switching processes cause current pulses within the DC line 104.
• the current pulses have a high amplitude.
• the battery 100 has at least one device according to the approach presented here for data transmission via the DC line 104. This makes it possible to dispense with a separate data line.
• a control unit not depicted here can interrogate status information of the battery 100 via the DC line 104, for example, in order to monitor a charging process of the battery 100 and a discharging process when the motor M is operated.
• the device uses pauses between the current pulses, while no switching takes place.
• data transmission may be subsequent to a pulse when an amplitude of the pulse is less than a threshold.
• a dwell time between the pulse and the data transmission may be inserted to bypass, for example, downstream peaks of the pulse.
• Data transmission to be coordinated For example, a block length of the data transmission can be reduced if a repetition frequency of the
• Switching operations have a minimum length to transfer a minimum block length in the break.
• the switching operations can also be grouped to produce one phase with virtually no pauses while a subsequent phase has longer pauses.
• Traction batteries 100 in electric and hybrid vehicles provide inverter 302 and motor (s) M with power. Both generate strong interference, but in particular the inverter 302 due to a clocked operation. Although the actual working frequencies are in the kilohertz range, harmonics occur up to the high megahertz range. These disorders can be one
• Frequencies when charging and discharging the battery 100 occur.
• 6 and 10 kHz are known for discharging (driving) and 65 kHz for charging.
• FIG. 4 shows a representation of communication between glitches 400 with interleaved data packets 402, which by means of a method for data transmission over a DC line leading in accordance with a
• Embodiment of the present invention are transferred.
• Glitches 400 and data packets 402 are shown as columns on a time axis.
• One size of the columns represents a signal strength, in particular a current on the battery lines.
• the interference pulses 400 have a significantly greater signal strength than the data packets 402.
• Data packets 402 and the interference pulses 400 have regular intervals, wherein in each case between two interference pulses 400, a data packet 402 is transmitted via the line.
• the distance 404 between two successive glitches 400 corresponds to a working clock of the inverter and is typically about 100 s at a frequency of 10 kHz.
• the data packets 402 have the same distance 404 but are offset by a half distance 404 from the interference pulses 400. As a result, the data packets 402 can be transmitted securely despite the small amplitude since the interference pulses 400 do not overlap the data packets.
• an exemplary embodiment comprises a "and / or" link between a first feature and a second feature, then this is to be read so that the embodiment according to one embodiment, both the first feature and the second feature and according to another embodiment either only first feature or only the second feature.

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• Engineering & Computer Science (AREA)
• Computer Networks & Wireless Communication (AREA)
• Power Engineering (AREA)
• Signal Processing (AREA)
• General Physics & Mathematics (AREA)
• Physics & Mathematics (AREA)
• Quality & Reliability (AREA)
• Life Sciences & Earth Sciences (AREA)
• Electrochemistry (AREA)
• General Chemical & Material Sciences (AREA)
• Chemical & Material Sciences (AREA)
• Manufacturing & Machinery (AREA)
• Microelectronics & Electronic Packaging (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Sustainable Development (AREA)
• Sustainable Energy (AREA)
• Transportation (AREA)
• Mechanical Engineering (AREA)
• Charge And Discharge Circuits For Batteries Or The Like (AREA)
• Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

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• 2012
  • 2012-05-25 DE DE102012208820.2A patent/DE102012208820B4/de active Active
• 2013
  • 2013-04-29 CN CN201380027195.2A patent/CN104412612A/zh active Pending
  • 2013-04-29 KR KR1020147032860A patent/KR20150022778A/ko active IP Right Grant
  • 2013-04-29 JP JP2015513075A patent/JP5951119B2/ja active Active
  • 2013-04-29 WO PCT/EP2013/058891 patent/WO2013174625A1/de active Application Filing

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