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公开(公告)号：US20240186814A1
公开(公告)日：2024-06-06
申请号：US18061069
申请日：2022-12-02
Applicant: Infineon Technologies AG
Inventor： Christian Walther , Christian Heiling , Felix Weidner , Heinrich Trebo
IPC: H02J7/00 , G01R31/374 , G01R31/3835 , H01M10/42 , H01M10/48
CPC classification number: H02J7/007194 , G01R31/374 , G01R31/3835 , H01M10/4257 , H01M10/482 , H02J7/0013 , H01M2010/4271 , H01M2220/20
Abstract: Circuitry to measure individual battery cells of a battery pack and make corrections to account for environmental differences between battery cells and their associated measuring circuit. Several cell supervision circuits (CSCs) may be placed to monitor and manage one or more subsets of battery cells within the battery pack. The temperature of this battery pack is not distributed homogeneously which may cause a temperature gradient and affect the internal regulation circuit that generates a reference voltage used to determine the voltage of its supervised cell or cells and regulates power to the CSC components. This reference voltage is temperature dependent and thus a temperature mismatch of the CSCs. Based on the measurement circuit an external regulation terminal controls a pass device to share power between the pass device and the internal regulation circuit to manage the temperature of each CSC.
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公开(公告)号：US20240012780A1
公开(公告)日：2024-01-11
申请号：US17811214
申请日：2022-07-07
Applicant: Infineon Technologies AG
Inventor： Markus Ekler , Christian Walther , Christian Heiling
IPC: G06F13/42
CPC classification number: G06F13/42
Abstract: A device is configured to receive, from a controller, an instruction requesting data for the device and determine a comparison result value based on a comparison of the data for the device and a reference value. The device is further configured to determine whether to respond to the instruction based on the comparison result value and, in response to a determination to respond to the instruction, output, to the controller, the comparison result value, wherein, to output the comparison result value, the device is configured to refrain from outputting the data for the device.
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公开(公告)号：US20220334155A1
公开(公告)日：2022-10-20
申请号：US17234165
申请日：2021-04-19
Applicant: Infineon Technologies AG
Inventor： Michael Krug , Felix Weidner , Christian Walther
Abstract: A device configured to monitor a voltage at a voltage rail for driving a motor includes processing circuitry configured to receive an indication of a switching signal for a phase of a plurality of phases of the motor. Inverter circuitry associated with the device is configured to electrically couple the phase to the voltage rail or to a reference rail associated with the voltage rail based on a driving signal that is generated based on the switching signal. The processing circuitry is further configured to determine a measurement time to measure the voltage at the voltage rail based on the switching signal and generate, using an analog-to-digital converter (ADC), a set of measured voltage values based on the voltage at the voltage rail during the measurement time.
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4.发明公开公开(公告)号：US20240347788A1
公开(公告)日：2024-10-17
申请号：US18298941
申请日：2023-04-11
Applicant: Infineon Technologies AG
Inventor： Markus Ekler , Christian Walther , Christian Heiling , Mario Fuchs
CPC classification number: H01M10/425 , H01M10/441 , H02J7/0019 , H02J7/00714 , H01M2010/4271
Abstract: In some examples, this disclosure describes a method of operating a plurality of battery management circuits of a battery management system associated with an electric device. The method may comprise adjusting a first trim value associated with a first battery management circuit during operation of the electric device, and adjusting a second trim value associated with a second battery management circuit during operation of the electric device. The method may also comprise sinking a first amount of current in the first battery management circuit based on the first trim value; and sinking a second amount of current in the second battery management circuit based on the second trim value, wherein sinking the first amount of current and sinking the second amount of current causes the first battery management circuit and the second battery management circuit to consume substantially similar amounts of current.
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公开(公告)号：US11892963B2
公开(公告)日：2024-02-06
申请号：US17811214
申请日：2022-07-07
Applicant: Infineon Technologies AG
Inventor： Markus Ekler , Christian Walther , Christian Heiling
IPC: G06F13/42 , G01R31/396 , B60L58/00
CPC classification number: G06F13/42
Abstract: A device is configured to receive, from a controller, an instruction requesting data for the device and determine a comparison result value based on a comparison of the data for the device and a reference value. The device is further configured to determine whether to respond to the instruction based on the comparison result value and, in response to a determination to respond to the instruction, output, to the controller, the comparison result value, wherein, to output the comparison result value, the device is configured to refrain from outputting the data for the device.
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Patent Agency Ranking
公开(公告)号：US20230384386A1
公开(公告)日：2023-11-30
申请号：US17664958
申请日：2022-05-25
Applicant: Infineon Technologies AG
Inventor： Markus Ekler , Christian Walther
IPC: G01R31/3842 , G01R31/389
CPC classification number: G01R31/3842 , G01R31/389
Abstract: A method for monitoring a particular battery cell among a plurality of battery cells may be performed by a battery monitoring circuit, wherein a supply wire from a supply circuit and a voltage measurement wire of a battery management circuit comprises a shared path for the particular battery cell. The method may comprise performing a first voltage measurement associated with the particular battery cell; performing a second voltage measurement associated with the particular battery cell and an additional element; and determining a cell voltage associated with the particular battery cell based on the first voltage measurement and the second voltage measurement.
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公开(公告)号：US11561247B2
公开(公告)日：2023-01-24
申请号：US17234165
申请日：2021-04-19
Applicant: Infineon Technologies AG
Inventor： Michael Krug , Felix Weidner , Christian Walther
Abstract: A device configured to monitor a voltage at a voltage rail for driving a motor includes processing circuitry configured to receive an indication of a switching signal for a phase of a plurality of phases of the motor. Inverter circuitry associated with the device is configured to electrically couple the phase to the voltage rail or to a reference rail associated with the voltage rail based on a driving signal that is generated based on the switching signal. The processing circuitry is further configured to determine a measurement time to measure the voltage at the voltage rail based on the switching signal and generate, using an analog-to-digital converter (ADC), a set of measured voltage values based on the voltage at the voltage rail during the measurement time.
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公开(公告)号：US20240388107A1
公开(公告)日：2024-11-21
申请号：US18318516
申请日：2023-05-16
Applicant: Infineon Technologies AG
Inventor： Christian Walther , Markus Ekler
Abstract: In some examples, this disclosure describes a method of operating a battery management circuit of a battery management system associated with an electric device. The method may comprise supplying power to the battery management circuit from battery cells being monitored by the battery management circuit in a first instance of time; and suppling power to the battery management circuit from a DC/DC power converter in a second instance of time.
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公开(公告)号：US20240014452A1
公开(公告)日：2024-01-11
申请号：US17811203
申请日：2022-07-07
Applicant: Infineon Technologies AG
Inventor： Markus Ekler , Christian Walther , Christian Heiling
IPC: H01M10/42 , H01M10/48 , G01R31/396
CPC classification number: H01M10/425 , H01M10/48 , G01R31/396 , H01M2010/4271
Abstract: A battery cell circuit of a battery management system configured to receive, from a previous battery cell circuit of a plurality of battery cell circuits connected in a daisy chain configuration or ring configuration, an instruction requesting a value for the battery cell circuit and determine a comparison result value based on a comparison of the value for the battery cell circuit and a reference value. The battery cell circuit is further configured to output, to a controller, the comparison result value, wherein, to output the comparison result value, the battery cell circuit is configured to refrain from outputting the value for the battery cell circuit.
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公开(公告)号：US11802917B1
公开(公告)日：2023-10-31
申请号：US17664970
申请日：2022-05-25
Applicant: Infineon Technologies AG
Inventor： Christian Walther , Markus Ekler , Christian Heiling
IPC: G01R31/389 , G01R31/3842 , G01R31/396
CPC classification number: G01R31/389 , G01R31/3842 , G01R31/396
Abstract: A process for determining an impedance of a battery cell may comprise delivering an excitation current to the battery cell; performing, via an analog-to-digital converter (ADC), one or more first measurements associated with the battery cell in the presence of the excitation current, wherein the one or more first measurements comprise one or more current measurements; performing, via the ADC, one or more second measurements associated with the battery cell in the presence of the excitation current, wherein the one or more second measurements comprise one or more voltage measurements; and determining the impedance of the battery cell based on the one or more first measurements and the one or more second measurements.
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