Abstract: 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.

Abstract: A battery system includes: a plurality of battery cells electrically connected to each other in series between a first node and a second node; an intermediate node dividing the plurality of battery cells into a first subset of battery cells and a second subset of battery cells; a step-down converter connected in parallel with the plurality of battery cells between the first node and the second node and having an output node; a first diode, an anode of which is connected to the intermediate node and a cathode of which is connected to the output node; and a control unit interconnected between the output node and the first node and configured to control the step-down converter.

Abstract: A control unit for a battery system, comprising: a microcontroller configured to generate a first control signal; a monitoring unit configured to generate a fault signal indicative of the operational state of the microcontroller; a first signal source configured to generate a state signal indicative of a system state; a comparator circuit configured to generate an intermediate control signal based on a first control signal and a fault signal; the comparator circuit further comprising a comparator node, the comparator circuit configured to transmit the intermediate control signal to the comparator node; wherein the first signal source is connected to the comparator node to transmit the state signal to the comparator node; the comparator circuit further comprises a comparator connected to the comparator node and configured to generate a switch control signal based on a voltage on the comparator node and based on a threshold voltage.

Abstract: 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.

Abstract: 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.

Abstract: A power supply system for a battery system of a vehicle is provided. The power supply system includes: a switch control unit configured to control a power switch to switch an external load; an electronic unit; a first power supply electrically connected to the switch control unit and electrically connected to the electronic unit; a second power supply; and a switching unit. In a normal mode, the first power supply electrically supplies the electronic unit. The switching unit is configured to, in a cold crank mode: electrically disconnect the first power supply from the electronic unit when a voltage of the first power supply drops below a threshold voltage; and electrically connect the second power supply to the electronic unit when the voltage of the first power supply drops below the threshold voltage such that the second power supply powers the electronic unit in the cold crank mode.

Abstract: 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.

Abstract: 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.

Abstract: A control system for a battery system is provided. The control system includes: an N-phase DC-DC converter including N single phase DC-DC converters (wherein N is a whole number greater than one); a first microcontroller configured to control a first fraction of the N single phase DC-DC converters; and a second microcontroller configured to control a second fraction of the N single phase DC-DC converters. The first and second microcontrollers are connected to each other via a data line. In a first operation mode, control operations of the first microcontroller and the second microcontroller are synchronized via the data line to commonly control the N single phase DC-DC converters, and in a second operation mode, the first microcontroller and the second microcontroller independently control the first fraction and the second fraction, respectively.

Abstract: Control electronics for a battery system of a vehicle with a low voltage battery include a first DC/DC converter including a first input terminal configured to be connected to the battery system, and an output terminal connected to a microcontroller, a wake-up circuit including a low voltage sub circuit and a sub circuit on a high voltage side that are galvanically isolated, and a second DC/DC converter including an input terminal configured to be connected to the low voltage battery, and an output terminal connected to the wake-up circuit, wherein the low voltage sub circuit is configured to transmit electrical energy received from the second DC/DC converter to the sub circuit on the high voltage side, and wherein the sub circuit on the high voltage side is configured to receive electrical energy from the low voltage sub circuit and to transmit the electrical energy to the first DC/DC converter.

Abstract: In a solid state switch (SSS) driver circuit for controlling a solid state switch operated as high side switch between a battery cell stack and a load, the SSS driver circuit includes: a voltage generation circuit; a switch off circuit; and a switch controller connected to a first output node and to a second output node, wherein the switch controller is configured to: receive a ground voltage via a third ground node, and a fourth control signal; and connect the first output node and a gate node of the solid state switch according to the fourth control signal.

Abstract: A controller is for controlling a battery module including a plurality of battery cells in a housing. The controller includes a control module to perform at least one control function with respect to at least one of the plurality of battery cells; and an access detection circuit including a light sensitive element in the housing. The access detection circuit is to output an access detection signal when a light intensity in the housing is greater than a predetermined threshold. The controller is to alter a state of the control module in response to the access detection signal.

Abstract: A method for operating a buck converter as a power source for electronics of a battery system, includes: operating the buck converter in a first mode in which the buck converter provides a first output voltage; receiving a first control signal; and in response to receiving the first control signal, operating the buck converter in a second mode in which the buck converter provides a second output voltage for a System Basis Chip of the battery system. The first output voltage has a first value in a range of a to b, and the second output voltage has a second value in the range of c to d, wherein b is less than c.

Abstract: A battery system includes a solid state switch (SSS), and a battery management system (BMS) including a gate driver and a shunt circuit. The SSS and the BMS share at least one module that is used for both the SSS and the BMS. The at least one module includes at least one of the gate driver and the shunt circuit.

Abstract: The present invention relates to a battery system including a battery module configured to include a plurality of rechargeable battery cells, a housing configured to house the battery module, a printed circuit board disposed on the battery module to include a first surface that faces the battery module and a second surface that is opposite to the first surface, and a connector configured to connect the printed circuit board and an external electrical component, wherein the printed circuit board includes a plurality of bent terminal portions disposed on the second surface, and the connector includes a plurality of metal clamps that are respectively connected to the plurality of bent terminal portions of the printed circuit board. In the battery system of the present invention, the connection between the connector and the printed circuit board can be realized without soldering wires.

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 system includes: a plurality of battery cells electrically connected to each other in series between a first node and a second node; an intermediate node dividing the plurality of battery cells into a first subset of battery cells and a second subset of battery cells; a step-down converter connected in parallel with the plurality of battery cells between the first node and the second node and having an output node; a first diode, an anode of which is connected to the intermediate node and a cathode of which is connected to the output node; and a control unit interconnected between the output node and the first node and configured to control the step-down converter.

Abstract: The present invention refers to a battery module comprising: at least one battery cell; a protective circuit module electrically coupled to the battery cell and including a printed circuit board; and a thermocouple unit being assembled on the printed circuit board and including two wires composed of dissimilar conductors, which are joined together at a sensing point provided at the battery cell, the thermocouple unit providing a value for a temperature TSENCE at the sensing point.

Abstract: 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.

Abstract: Embodiments of the present invention provide a crash detection circuit for detecting a crash of a vehicle and including a transformer including a first inductor as a part of a crash signal generation circuit, and a second inductor as a part of a crash signal evaluation circuit, and galvanically isolated from the first inductor, a first comparator including an output, an inverting input coupled to a first terminal of the second inductor, and a non-inverting input electrically coupled to a second terminal of the second inductor, and a window comparator including a first input terminal electrically connected to the output of the first comparator for an input voltage to be evaluated, and two second input terminals for receiving reference voltages.