Abstract: A battery system includes: a high voltage (HV) system having a plurality of connected rechargeable battery cells; a battery disconnecting unit (BDU) comprising a carrier plate, BDU relays configured to switchably open or close a HV line of the HV system, wherein the HV line is at least partially integrated into the carrier plate, and a BDU control unit configured to control the BDU relays; and a liquid cooling plate on a first side of the carrier plate.

Abstract: The present disclosure refers to a method for detecting and evaluating a mechanical impact on a battery pack in an at least partially electric vehicle, wherein the battery pack is disposed on an underbody of the vehicle. The method includes a step of detecting first condition data determining an underbody impact using a first sensor. Further, the underbody impact is determined based on the detected first condition data. Afterwards, a degree of severity, comprising a plurality of levels, of the underbody impact is determined based on second condition data characterizing a severity of the underbody impact detected using a second sensor. Furthermore, an output is determined based on the determined degree of severity.

Abstract: The present disclosure refers to a method for determining a thermal coupling between a temperature sensor and a battery cell of a battery system, the method comprising: heating the temperature sensor by applying a heating current to the temperature sensor, the heating current being supplied by a high voltage side of the battery system, determining the temperature or a temperature-dependent property of the temperature sensor, comparing the determined temperature or temperature-dependent property with a first predefined threshold, and determining a reduced thermal coupling between the temperature sensor and the battery cell if the determined temperature or temperature-dependent property is higher than the first predefined threshold.

Abstract: A battery system includes: a battery pack including a housing and a plurality of battery cells accommodated within the housing; an underbody protection structure; a cooler connected to and arranged between the battery cells and the underbody protection structure; and a pressure detection device. The cooler includes a cooling channel and a pressure detection channel separated from the cooling channel, and both the cooling channel and the pressure detection channel being arranged inside the cooler. The pressure detection device includes a pressure sensor connected to the pressure detection channel and configured to detect an underbody contact or impact event by monitoring a pressure in the pressure detection channel.

Abstract: A battery module includes: a plurality of aligned battery cells having differently-oriented surfaces; a cell supervision circuit (CSC) configured to receive signals corresponding to the voltage and/or temperature of at least one of the battery cells; and a flexible interconnector comprising a strip-shaped flexible printed circuit (FPC). The FPC includes a first insulating main surface, a second insulating main surface opposite the first insulating main surface, and a plurality of thermally and/or electrically conducting lines between the first insulating main surface and the second insulating main surface. Each of the conducting lines has a contact portion exposed by a contact aperture in the first insulating main surface and/or in the second insulating main surface and a connecting portion for connection to the CSC, and the flexible interconnector wraps around the battery cells such that the contact portions contact the differently-oriented surfaces of the battery cells.

Abstract: A battery system includes: a plurality of battery cells, each of the battery cells having a venting side including a venting exit configured to allow venting products to exit the battery cells during a thermal runaway and a cooling side opposite the venting side; a cooling plate, the cooling side of the battery cells being in thermal connection with a first side of the cooling plate; and a battery housing enclosing the battery cells in a cell chamber. A guiding channel is formed between a second side of the cooling plate opposite the first side and a channel wall of the battery housing facing the second side of the cooling plate, and a passage fluidly connects the cell chamber and the guiding channel.

Abstract: 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.

Abstract: A battery module includes: a plurality of aligned battery cells having differently-oriented surfaces; a cell supervision circuit (CSC) configured to receive signals corresponding to the voltage and/or temperature of at least one of the battery cells; and a flexible interconnector comprising a strip-shaped flexible printed circuit (FPC). The FPC includes a first insulating main surface, a second insulating main surface opposite the first insulating main surface, and a plurality of thermally and/or electrically conducting lines between the first insulating main surface and the second insulating main surface. Each of the conducting lines has a contact portion exposed by a contact aperture in the first insulating main surface and/or in the second insulating main surface and a connecting portion for connection to the CSC, and the flexible interconnector wraps around the battery cells such that the contact portions contact the differently-oriented surfaces of the battery cells.

Abstract: A battery system includes: a plurality of battery units, each of the battery units including at least one battery cell, the at least one battery cell including a positive terminal, a negative terminal, and a cell case; and a flexible printed circuit (FPC) including a plurality of integrated circuits (ICs) configured for voltage measurement and temperature measurement. The ICs are interconnected by a wiring structure of the FPC. Each of the ICs is thermally connected to the cell case of the at least one of battery cell of each of the battery units via a contact element in the FPC and is electrically connected via the contact element to the positive terminal of the at least one battery cell of each of the battery units.

Abstract: A battery system includes: a plurality of battery units, each of the battery units including at least one battery cell, the at least one battery cell including a positive terminal, a negative terminal, and a cell case; and a flexible printed circuit (FPC) including a plurality of integrated circuits (ICs) configured for voltage measurement and temperature measurement. The ICs are interconnected by a wiring structure of the FPC. Each of the ICs is thermally connected to the cell case of the at least one of battery cell of each of the battery units via a contact element in the FPC and is electrically connected via the contact element to the positive terminal of the at least one battery cell of each of the battery units.

Abstract: A method for connecting a flexible printed circuit (FPC) to a battery module and a cell supervision circuit board (CSCB) is provided. The method includes: providing a coil of a continuous, strip-shaped FPC; unwinding a first section of the FPC from the coil, positioning the first section of the FPC over a first contact portion of the battery module, and welding a conductive structure of the FPC in the first section to the first contact portion of the battery module; unwinding a second section of the FPC from the coil, positioning the second section of the FPC over a contact pad of the CSCB, and welding the conductive structure of the FPC in the second section to the contact pad of the CSCB; and separating the first section and second section of the FPC from the coil of the FPC.

Abstract: A method for connecting a flexible printed circuit (FPC) to a battery module and a cell supervision circuit board (CSCB) is provided. The method includes: providing a coil of a continuous, strip-shaped FPC; unwinding a first section of the FPC from the coil, positioning the first section of the FPC over a first contact portion of the battery module, and welding a conductive structure of the FPC in the first section to the first contact portion of the battery module; unwinding a second section of the FPC from the coil, positioning the second section of the FPC over a contact pad of the CSCB, and welding the conductive structure of the FPC in the second section to the contact pad of the CSCB; and separating the first section and second section of the FPC from the coil of the FPC.

Abstract: A method for connecting a flexible printed circuit (FPC) to a battery module and a cell supervision circuit board (CSCB) is provided. The method includes: providing a coil of a continuous, strip-shaped FPC; unwinding a first section of the FPC from the coil, positioning the first section of the FPC over a first contact portion of the battery module, and welding a conductive structure of the FPC in the first section to the first contact portion of the battery module; unwinding a second section of the FPC from the coil, positioning the second section of the FPC over a contact pad of the CSCB, and welding the conductive structure of the FPC in the second section to the contact pad of the CSCB; and separating the first section and second section of the FPC from the coil of the FPC.

Abstract: A battery system includes a plurality of cell rows, each including a plurality of cells arranged along a first direction; a plurality of cooler beams; and a channel system including a plurality of main channels, each being configured to guide a coolant. Each of the cell rows is sub-divided into a plurality of blocks, and in each block, the front side positively abuts the second side of one cooler beam and/or the rear side positively abuts the first side of another cooler beam. For each of the cooler beams, one of the main channels is integrated therein and is thermally connected thereto.

Abstract: A method for connecting a flexible printed circuit (FPC) to a battery module and a cell supervision circuit board (CSCB) is provided. The method includes: providing a coil of a continuous, strip-shaped FPC; unwinding a first section of the FPC from the coil, positioning the first section of the FPC over a first contact portion of the battery module, and welding a conductive structure of the FPC in the first section to the first contact portion of the battery module; unwinding a second section of the FPC from the coil, positioning the second section of the FPC over a contact pad of the CSCB, and welding the conductive structure of the FPC in the second section to the contact pad of the CSCB; and separating the first section and second section of the FPC from the coil of the FPC.

Abstract: A battery pack includes: a battery housing including a plurality of crossbeams dividing an interior space of the battery housing into a plurality of separated accommodation chambers; a plurality of cell units arranged within the battery housing, each of the cell units including a plurality of stacked battery cells, each of the accommodation chambers accommodating at least two of the cell units separated by a spacer stacked between the at least two cell units; and a plurality of venting paths respectively arranged per each of the cell units, each of the venting paths connecting the respective cell unit with a respective venting device of the corresponding accommodation chamber without passing an adjacent one of the cell units.

Abstract: A method for connecting a flexible printed circuit (FPC) to a battery module and a cell supervision circuit board (CSCB) is provided. The method includes: providing a coil of a continuous, strip-shaped FPC; unwinding a first section of the FPC from the coil, positioning the first section of the FPC over a first contact portion of the battery module, and welding a conductive structure of the FPC in the first section to the first contact portion of the battery module; unwinding a second section of the FPC from the coil, positioning the second section of the FPC over a contact pad of the CSCB, and welding the conductive structure of the FPC in the second section to the contact pad of the CSCB; and separating the first section and second section of the FPC from the coil of the FPC.

Abstract: A temperature measurement arrangement for a battery system includes: temperature sensing diodes in a grid and thermally connectable to battery cells of the battery system, a current supply portion, a voltage measurement portion, and a control portion. The grid has first lines and second lines electrically interconnected with the temperature sensing diodes. A forward direction of each temperature sensing diode pointing from the corresponding first line to the corresponding second line. The current supply portion including current supply connections that are, independently of each other, suppliable with electric current. The first lines are connected between the voltage measurement portion and the current supply portion, and the second lines are connected to the control portion.

Abstract: A pyro igniter circuit and a method for testing the same is provided. The pyro igniter circuit includes a supervisory circuit configured to: transmit a test signal having a pulse duration time below an igniter activation pulse time of a pyro igniter disconnect element and/or an ignition control signal, in response to the transmitted test signal, has an amplitude below an igniter activation amplitude of the pyro igniter disconnect element; and receive a diagnostic response signal in response to the transmitted test signal.

Abstract: 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.