Samsung Sdi Co., Inc.

Infineon Technologies Ag

Maximilian Hofer

Markus Pretschuh

Peter Kurcik

Helmut Hammerschmied

Christoph Boehm

Thomas Korherr

Roland Klobasa

Gernot Kraberger

Michael Erhart

Felix Weidner

Thomas Trathnigg

Jesus Ruiz Sevillano

Michael Haindl

Florian Maxl

Urban Cotic

Robert Kolm

Albert Missoni

Thomas Jackum

Stefan Schneider

Jürgen Fritz

Nikolaus Hochgatterer

Wolfgang Reinprecht

Myungchul Kim

Kwangmin Yoo

Sangchul Seo

Renato Mandic

Byeongseon Min

Dolores Kim

Jeongmo Yang

Christoph Schmiedhofer

Peter Apolloner

Birgit Weissensteiner

Sunmin Kim

Stefan Doczy

Mandic Renato

Pyungkap Kim

Werner Bergmayr

Mathias Pischler

Gerald Richter

Manfred Marchl

Kovac Damir

Kurt Duller

Kraberger Gernot

Gerald Schalli

Weissensteiner Birgit

Helmut Hammerschied

In a control unit for a battery system, the control unit includes: an input node configured to receive a sensor signal indicating a state of at least one of a plurality of battery cells of the battery system; a first microcontroller configured to generate a first control signal based on the state of the at least one battery cell; a first communication interface configured to receive a second state signal indicating an operation state of a second microcontroller; and a switch control circuit configured to: receive the first control signal; generate a second control signal based on the state of the at least one battery cell; and transmit one of the first and second control signal to a power switch of the battery system based on at least one received state signal indicating an operation state of the first microcontroller and of an operation state of the second microcontroller.

Battery system

A control unit for a battery system includes a plurality of battery cells is provided. The control unit includes: an input node configured to receive a sensor signal indicative of a state of at least one of the plurality of battery cells; a microcontroller connected to the input node and configured to generate a first control signal based on the sensor signal; and a switch control circuit configured to control a power switch of the battery system by: receiving the sensor signal, the first control signal, and a fault signal indicative of an operational state of the microcontroller; generating a second control signal based on the sensor signal; and transmitting one of the first control signal and the second control signal to an output node of the control unit based on the received fault signal.

A battery system for an electric vehicle includes a battery module having battery cells and a controller module connected to the battery cells, the controller module being configured to measure voltage values, current values, and temperature values of at least one of the battery cells, and a controller unit connected to the battery module and configured to communicate with the controller module via a data line, the controller unit being configured to determine an inherent physical property of the at least one of the battery cells based on the measured values of the controller module, to compare the determined inherent physical property with a reference value for the inherent physical property, and to perform an authentication of the at least one of the battery cells based on the comparison.

A testing method for a thermal contact between a temperature sensor and a battery cell of a battery module, includes measuring a temperature Tof the temperature sensor at a time point t, heating the temperature sensor for a defined time (t−t) and/or (t−t), measuring a temperature Tof the temperature sensor at a time point tand/or a temperature Tof the temperature sensor at a time point t, and determining the thermal contact between the temperature sensor and the battery cell based on at least one of the temperature differences ΔT=(T−T), ΔT=(T−T) and ΔT=(T−T) and a heat transfer coefficient determined thereby. Also, a testing circuit for a temperature sensor of a battery module includes a thermistor with a first node connected to a first supply voltage and a second node connected to ground, a switch interconnected between the first node of the thermistor and a second supply voltage, and an analog-to-digital converter connected in parallel to the thermistor. Also, a cell supervision circuit for a battery module including a circuit carrier, a testing circuit, and a temperature sensor surface mounted to the circuit carrier and having a measuring head with a thermistor configured to be brought into thermal contact with a battery cell of the battery module.

Cell supervision circuit for a battery module

A control system for a battery system is provided. The control system includes a master controller and a slave controller using light-based communication. The master controller includes a light source and a transmission controller controlling the light source, and the slave controller includes a photo-sensitive element, a wake-up circuit, a power supply node, and a receiver circuit. The photo-sensitive element receives the light signals emitted by the light source and, in response to receiving a wake-up light signal, outputs a wake-up signal to the wake-up circuit, and in response to receiving the wake-up signal from the photo-sensitive element, the wake-up circuit connects the receiver circuit to the power supply node or to the photo-sensitive element. When the receiver circuit is connected to the power supply node and the photo-sensitive element, the receiver circuit receives an operation voltage from the power supply node and receives reception signals from the photo-sensitive element.

Control system for a battery system

A battery system includes: a plurality of battery modules including a plurality of battery cells, wherein each battery module comprises a battery module monitor configured to monitor a state of the battery cells; a battery system monitor; and an optical communication system configured to connect the battery module monitors with the battery system monitor over at least two communication paths, wherein the optical communication system is configured to use at least two different wavelengths of light to differentiate between the communication paths.

System and method for communication between modules of a battery system

A battery system for an electric vehicle includes a high voltage battery including a plurality of battery cells interconnected with one another configured to provide a high voltage output at battery system terminals and a battery disconnecting element powered by the high voltage battery and configured to disconnect the high voltage battery from at least one of the battery system terminals in the event of a malfunction or crash.

Battery system and vehicle including the battery system

A power semiconductor device includes: a power semiconductor; a base metal sheet; and a flexible printed circuit board (PCB) between the base metal sheet and the power semiconductor. The power semiconductor includes a first power pad on a side facing the flexible PCB, and the flexible PCB includes a conductive pad, one side of which is electrically connected to the first power pad of the power semiconductor and the opposite side of which is electrically connected to the base metal sheet.

Power semiconductor device

The present invention relates to a method for generating a security identifier for a control unit () of a battery system (), comprising the steps of supplying an operation voltage to the control unit (), outputting calibration data from a non-volatile memory element () of the control unit (), and generating a security identifier from the calibration data using a security algorithm. Therein, the calibration data is based on at least one testing process performed on the control unit () and is required for a faultless operation of the control unit (). Further, according to a method for generating an activation key for a control unit () of a battery system () an activation key is generated based on such security identifier and output from the control unit (). The invention further relates to an activation method for such control unit (), wherein a control unit () is activated in response to the validation of such security identifier. The present invention further relates to a control unit () for performing such methods and further relates to the use of calibration data for generating a security identifier.

Control unit for a battery system

The present invention relates to a testing method for the thermal contact between a temperature sensor () and a battery cell () of a battery module (), wherein the method comprises the steps of measuring a temperature Tof the temperature sensor () at a time point t, heating the temperature sensor () for a defined time (t&#x2212;t), measuring a temperature Tof the temperature sensor () at a time point tand/or a temperature Tof the temperature sensor () at a time point t, and determining the thermal contact between the temperature sensor () and the battery cell () based on at least one of the temperature differences &#x394;T=(T&#x2212;T), &#x394;T=(T&#x2212;T) and/or &#x394;T=(T&#x2212;T). The invention further relates to a testing circuit () for a temperature sensor () of a battery module (), comprising a thermistor () with a first node () connected to a first supply voltage () and a second node () connected to ground (), a switch () interconnected between the first node () of the thermistor () and a second supply voltage (), and an analog-to-digital converter () connected in parallel to the thermistor (). The invention further relates to a cell supervision circuit () for a battery module (), comprising a circuit carrier (), a testing circuit () according to any one of the claimsto, and a temperature sensor () surface mounted to the circuit carrier () and comprising a measuring head () with a thermistor () configured to be brought into thermal contact with a battery cell () of the battery module ().

Temperature sensor thermal contact testing method and circuit

A battery system includes a plurality of battery modules, each of the battery modules including a plurality of stacked battery cells and a battery module monitor (BMM) configured to monitor the respective battery cells; a battery system monitor (BSM) configured to communicate with and control the BMMs; a housing enclosing the battery modules and the BSM, the battery modules being arranged in the housing such that a swelling compensation channel is formed between the battery module and the housing; and an optical communication system (OCS) configured to connect the BSM with the BMMs via optical signals propagating along the swelling compensation channel.

Battery system with light-based communication

A method for providing battery diagnostics includes: measuring a first voltage across a first battery cell of a rechargeable battery via a first measurement path of a network using a first measurement circuit, measuring the first voltage including taking at least one first voltage sample during a first time period using the first measurement circuit; measuring a second voltage across the first battery cell via a second measurement path of the network using a second measurement circuit, measuring the second voltage including taking at least one second voltage sample during the first time period using the second measurement circuit, where the second measurement path of the network is different from the first measurement path of the network; comparing the measured first voltage with the measured second voltage; and generating a diagnostic output signal based on the comparison.

Battery diagnostics system and method using second path redundant measurement approach

A sensor system for a battery module, includes: a shunt resistor including: a first current clamp and a second current clamp, each of the first and second current clamps to be connected to a current path of the battery module; a first voltage clamp and a second voltage clamp; and a measurement resistance between the first voltage clamp and the second voltage clamp, and electrically connected to the first current clamp and the second current clamp; a first landing pad electrically connected to the first voltage clamp; a second landing pad electrically connected to the second voltage clamp; a first temperature sensor connected to the first landing pad; and a second temperature sensor connected to the second landing pad.

Sensor system for a battery module

A busbar for a battery system according to an exemplary embodiment of the present invention includes: a first bar member and a second bar member which are spaced apart from each other; and a third bar member which connects the first bar member and the second bar member to define a common bar, in which the third bar member is shunt resistance having ohmic resistance and electrically connects the first bar member and the second bar member. In addition, a battery system according to the exemplary embodiment of the present invention includes the busbar.

Busbar for battery system and battery system having the same

An electric current measuring arrangement includes: a first control unit including a first microcontroller; a second control unit including: a second microcontroller; an amplifier electrically interconnected between the second microcontroller and terminals of a shunt resistor for current measurement; and a node interconnected between one of the terminals of the shunt resistor and the amplifier; a communication line communicatively connecting the first control unit and the second control unit. The first microcontroller is configured to generate a test pattern signal, and to transmit the test pattern signal to the second control unit through the communication line, the second control unit is configured to transmit the test pattern signal to the node, the second microcontroller is configured to receive a measuring signal through the amplifier, and the first microcontroller is configured to receive the measuring signal, compare the measuring signal with the test pattern signal, and verify the current measurement.

Electric current measuring arrangement and battery system

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Hartberg, Austria

Maximilian Hofer