公开(公告)号：US10320213B2

公开(公告)日：2019-06-11

申请号：US15216149

申请日：2016-07-21

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Joseph Berg ,  Kenneth L. Kaye

IPC: H01M8/04858 ,  H02M3/158 ,  H02J1/00 ,  H02J7/00 ,  H01M8/04992 ,  H02M3/156

Abstract: A fuel cell charging system includes a fuel cell stack having a first operating direct current (DC) voltage between fuel check stack terminals, a high voltage system operating at a first DC operating voltage different than and generally higher than the first operating voltage of the fuel cell stack, a boost converter in electrical connection with the fuel cell stack and the high voltage system, and a stack charging component that applies a second DC operating voltage, generally of lower value than that of the first normal operating voltage, to the fuel cell stack. The boost converter transfer electrical power from the fuel cell stack to the high voltage system during fuel cell operation. Characteristically, the second DC operating voltage applied to the fuel cell stack terminals is typically lower in value than that of the first DC operating voltage of both the fuel cell stack and the HV electrical system and is stepped down from the first DC operating voltage of the HV electrical system.

公开(公告)号：US09434258B2

公开(公告)日：2016-09-06

申请号：US13653003

申请日：2012-10-16

Applicant: GM Global Technology Operations LLC

Inventor： Joseph Berg ,  John W. Meyer, III ,  Wesley O. Hamilton ,  Robert S. Foley

IPC: B60R16/03 ,  B60L3/00 ,  B60L3/04 ,  B60L7/14 ,  B60L11/18

CPC classification number: B60L3/0053 ,  B60L3/04 ,  B60L7/14 ,  B60L11/1803 ,  B60L11/1868 ,  B60L11/1885 ,  B60L11/1887 ,  B60L2210/12 ,  Y02T10/7066 ,  Y02T10/7233 ,  Y02T90/34

Abstract: A power converter includes positive and negative input lines and an input capacitor coupled across the input lines. The power converter also includes a switch coupled across the input lines that includes a control contact and an additional contact. The power converter also includes switch controller coupled to the control contact and that includes positive and negative input connections. The power converter also includes a contactor diagnostic supply interface coupled between the positive input connection and the additional contact.

Abstract translation: 功率转换器包括正输入线和负输入线以及耦合在输入线两端的输入电容。 功率转换器还包括耦合在输入线上的开关，其包括控制触点和附加触点。 功率转换器还包括耦合到控制触点并且包括正和负输入连接的开关控制器。 电源转换器还包括耦合在正输入连接和附加触点之间的接触器诊断电源接口。

公开(公告)号：US20240039393A1

公开(公告)日：2024-02-01

申请号：US17875189

申请日：2022-07-27

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Akshay Sarin ,  Alan B. Martin ,  Joseph Berg

IPC: H02M1/14 ,  H02M1/00 ,  H02M3/158

CPC classification number: H02M1/143 ,  H02M1/0009 ,  H02M1/0043 ,  H02M3/1586

Abstract: A system for transferring DC electric power to a DC electric power system includes an electric power source, a DC-DC power converter, a system power bus including a capacitor, a first current sensor, a second current sensor, a third current sensor, and a controller. The DC-DC power converter includes a switched inductance circuit including an inductor, a high-voltage switch, and a diode. The second current sensor monitors a second current in the system power bus between the DC-DC power converter and the capacitor. The controller determines a parametric setpoint for the system power bus, determines the first current, the second current, and the third current in the system power bus, and controls the switching DC-DC power converter based upon the parametric setpoint, the first current, the second current, and the third current.

公开(公告)号：US09586541B2

公开(公告)日：2017-03-07

申请号：US14631628

申请日：2015-02-25

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Joseph Berg ,  Kenneth L. Kaye

IPC: B60R16/023 ,  B60L11/18

CPC classification number: B60R16/023 ,  B60L11/18 ,  B60L11/1861 ,  B60L11/1864 ,  B60L11/1879 ,  B60L11/1898 ,  B60L2240/547 ,  H01M10/425 ,  H01M10/482 ,  H01M2010/4278 ,  H01M2220/20 ,  H02J1/00 ,  H02J7/0004 ,  H02J7/0047 ,  H02J2001/004 ,  H02J2007/0001 ,  H02J2007/005 ,  Y02T10/7044 ,  Y02T10/7061 ,  Y02T90/16 ,  Y02T90/34

Abstract: Methods and systems for identification of slave elements and/or cells in a communication system within a vehicle. In some implementations, such methods may comprise measuring a first voltage of a first slave device of a plurality of slave devices within the communication system, and measuring a second voltage of a second slave device of the plurality of slave devices within the communication system. A location of at least the first and second slave devices, which may be linked with respective cells, such as battery cells or fuel cells, may then be identified by comparing at least the first voltage with the second voltage.

Abstract translation: 用于识别车辆内的通信系统中的从属单元和/或单元的方法和系统。 在一些实现中，这样的方法可以包括测量通信系统内的多个从设备的第一从设备的第一电压，以及测量通信系统内的多个从设备的第二从设备的第二电压。 可以通过将至少第一电压与第二电压进行比较来识别至少第一和第二从属装置的位置，所述第一和第二从装置可以与诸如电池单体或燃料电池的各个电池连接。

公开(公告)号：US20250074238A1

公开(公告)日：2025-03-06

申请号：US18460947

申请日：2023-09-05

Applicant: GM Global Technology Operations LLC

Inventor： Steven Earl Muldoon ,  Akshay Sarin ,  Alan B. Martin ,  Yue-Yun Wang ,  Joseph Berg

IPC: B60L53/62 ,  G01R31/389

Abstract: A system includes a conversion device of a charging station, the conversion device connected to a first energy source of the charging station, and a controller configured to perform an impedance measurement applied to an energy storage system, the energy storage system selected from at least one of a second energy source of the charging station and a battery system of a vehicle. The controller is configured to cause the first energy source to generate a first excitation signal for measuring a first energy source impedance, control the conversion device to adjust a parameter of the first excitation signal to convert the first excitation signal to a converted excitation signal, apply the converted excitation signal to the energy storage system, detect a current response of the energy storage system, and estimate the impedance of the energy storage system based on the current response.

公开(公告)号：US20240154528A1

公开(公告)日：2024-05-09

申请号：US17984166

申请日：2022-11-09

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Akshay Sarin ,  Alan B. Martin ,  Joseph Berg

IPC: H02M3/155 ,  H02M1/00

CPC classification number: H02M3/155 ,  H02M1/0009

Abstract: A pre-charge system for a DC electric power system includes a high-voltage electric power bus that electrically connects to an external bus. A contactor includes a first switch arranged to control electric power through the positive bus link, and a second switch arranged to control electric power through the negative bus link. A pre-charge resistor is arranged in parallel with the first switch. A controller is operatively connected to the first and second switches, and in communication with a voltage sensor. The controller includes an instruction set to activate the second switch, periodically monitor the electrical potential, determine a time-rate of change in the electrical potential, and close the first switch when the time-rate of change in the electrical potential is less than a first threshold.

公开(公告)号：US20190162790A1

公开(公告)日：2019-05-30

申请号：US15825672

申请日：2017-11-29

Applicant: GM Global Technology Operations LLC

Inventor： Jeffrey J. Gagliardo ,  Andrew J. Maslyn ,  Joseph Berg

IPC: G01R31/36 ,  B60W10/04 ,  H01M8/04537

Abstract: A method for evaluating voltage sensor output using a diagnostic system includes: measuring an overall fuel cell stack voltage using a stack voltage sensor; identifying a fuel cell voltage of a first end cell using a first end cell voltage sensor and a second end cell using a second end cell voltage sensor; determining if a maximum value of the overall fuel cell stack voltage, the fuel cell voltage of the first end cell or the second end cell is less than a sensor limit, and if a minimum value of the fuel cell voltages is greater than the sensor limit; performing a test to identify if the maximum value is greater than an average sensor signal value and if the average sensor signal value is greater than the minimum value; and conducting a test to identify if the minimum value is less than a first predetermined threshold.

公开(公告)号：US10069160B2

公开(公告)日：2018-09-04

申请号：US15221024

申请日：2016-07-27

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Joseph Berg ,  Jun Cai ,  Sergio E. Garcia ,  Daniel W. Smith ,  Matthew C. Kirklin

IPC: H01M8/04828 ,  H01M8/24 ,  B60L11/18 ,  H01M8/04858

Abstract: A fuel cell voltage recovery system includes a fuel cell stack having a fuel cell stack voltage between fuel cell stack terminals which is at a first voltage during normal fuel cell operation. The system also includes a high voltage electrical system operating at a first DC operating voltage that is generally higher than the first voltage of the fuel cell stack. A boost converter in electrical connection with the fuel cell stack and the high voltage electrical system operates in a normal control mode to transfer electrical power from the fuel cell stack to the high voltage electrical system through regulation and control of average stack output current (boost input current) during normal fuel cell operation. The boost converter can also operate in a voltage control mode to lower the fuel cell stack voltage to a second voltage that is lower than the first voltage. A FCS controller controls the operation of the boost converter.

公开(公告)号：US20130127243A1

公开(公告)日：2013-05-23

申请号：US13653003

申请日：2012-10-16

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Joseph Berg ,  John W. Meyer, III ,  Wesley O. Hamilton ,  Robert S. Foley

IPC: B60R16/03

CPC classification number: B60L3/0053 ,  B60L3/04 ,  B60L7/14 ,  B60L11/1803 ,  B60L11/1868 ,  B60L11/1885 ,  B60L11/1887 ,  B60L2210/12 ,  Y02T10/7066 ,  Y02T10/7233 ,  Y02T90/34

Abstract: A power converter includes positive and negative input lines and an input capacitor coupled across the input lines. The power converter also includes a switch coupled across the input lines that includes a control contact and an additional contact. The power converter also includes switch controller coupled to the control contact and that includes positive and negative input connections. The power converter also includes a contactor diagnostic supply interface coupled between the positive input connection and the additional contact.

Abstract translation: 功率转换器包括正输入线和负输入线以及耦合在输入线两端的输入电容。 功率转换器还包括耦合在输入线上的开关，其包括控制触点和附加触点。 功率转换器还包括耦合到控制触点并且包括正和负输入连接的开关控制器。 电源转换器还包括耦合在正输入连接和附加触点之间的接触器诊断电源接口。