公开(公告)号：US09876369B2

公开(公告)日：2018-01-23

申请号：US15070834

申请日：2016-03-15

Applicant: LG Chem, Ltd.

Inventor： Richard McCormick ,  Christopher E. Curtis

IPC: H02J7/00 ,  G01R31/00 ,  G01R31/36

CPC classification number: H02J7/0014 ,  G01R31/3696 ,  H02J7/0004 ,  H02J7/0016 ,  H02J7/0024

Abstract: A battery system and a method for determining an open circuit fault condition in a battery module are provided. The method includes measuring a first voltage between first and second electrical sense lines while a first transistor in a first cell balancing circuit is turned off, and measuring a second voltage between the first and second electrical sense lines while the first transistor is turned on. The method further includes retrieving a first resistance value from a table stored in a memory device. The method further includes determining a first cell balancing current based on the first and second voltages and the first resistance value. The method further includes determining a first open circuit fault condition between the first battery cell and the first cell balancing circuit if the first cell balancing current is greater than a first threshold current.

公开(公告)号：US09722286B2

公开(公告)日：2017-08-01

申请号：US14489613

申请日：2014-09-18

Applicant: LG Chem, Ltd.

Inventor： Alexander Jeffrey Smith ,  Richard McCormick ,  Satish Ketkar ,  Robert Merriman ,  Heekook Yang

IPC: H01M10/60 ,  H01M10/613 ,  H01M10/48 ,  H01M10/63 ,  H01M10/6563 ,  H01M10/6556 ,  H01M10/635 ,  H01M2/10

CPC classification number: H01M10/613 ,  H01M2/10 ,  H01M2/1061 ,  H01M2/1077 ,  H01M10/486 ,  H01M10/63 ,  H01M10/633 ,  H01M10/635 ,  H01M10/6556 ,  H01M10/6563 ,  H01M10/667

Abstract: A battery pack is provided. The battery pack includes first and second temperature sensors that are disposed in first and second interior spaces, respectively. The first temperature sensor generates a first signal indicative of a first temperature level of the battery cell. The second temperature sensor generates a second signal indicative of a second temperature level of the DC-DC voltage converter. The battery pack further includes a microprocessor that determines a first fan speed percentage value of the electric fan based on the first temperature level, and a second fan speed percentage value of the electric fan based on the second temperature level. The microprocessor selects the first fan speed percentage value if the first fan speed percentage value is greater than the second fan speed percentage value.

公开(公告)号：US09379420B2

公开(公告)日：2016-06-28

申请号：US14330163

申请日：2014-07-14

Applicant: LG Chem, Ltd.

Inventor： Satish Ketkar ,  Paul Laurain ,  Richard McCormick

IPC: F25B1/00 ,  H01M10/6569 ,  H01M10/6551 ,  H01M10/613 ,  F28D21/00

CPC classification number: H01M10/6551 ,  F25B49/025 ,  F25B2600/0253 ,  F25B2700/2117 ,  F25D19/00 ,  F28D2021/0028 ,  H01M10/613 ,  H01M10/6569 ,  Y02B30/741

Abstract: A battery system having a cooling plate with a conduit therein is provided. The system further includes a battery module having first and second battery cells. The system further includes a compressor, and a condenser coupled between the compressor and the conduit of the cooling plate. The system further includes a microprocessor that determines a maximum temperature level of the first and second battery cells, and determines a target temperature level for the cooling plate based on the maximum temperature level. The microprocessor determines a temperature error value based on a difference between a temperature level and the target temperature level of the cooling plate, and determines a desired RPM value for the compressor based on the temperature error value.

Abstract translation: 提供了具有其中具有导管的冷却板的电池系统。 该系统还包括具有第一和第二电池单元的电池模块。 该系统还包括压缩机和联接在压缩机和冷却板的导管之间的冷凝器。 该系统还包括确定第一和第二电池单元的最高温度水平的微处理器，并且基于最大温度水平确定冷却板的目标温度水平。 微处理器基于冷却板的温度水平和目标温度水平之间的差异来确定温度误差值，并且基于温度误差值确定压缩机的期望RPM值。

公开(公告)号：US09209635B2

公开(公告)日：2015-12-08

申请号：US14105219

申请日：2013-12-13

Applicant: LG Chem, Ltd.

Inventor： Richard McCormick

IPC: H02P1/00 ,  H02J7/00 ,  H02P27/06 ,  H02H9/00

CPC classification number: H02J7/0052 ,  H02H9/00 ,  H02H9/001 ,  H02J7/0054 ,  H02J7/345 ,  H02P27/06

Abstract: A pre-charging system for a capacitor in a voltage inverter for an electric motor is provided. The system includes a grounding contactor electrically coupled between a grounding terminal of a battery pack and a first end of the capacitor. The system further includes a pre-charging contactor and a resistor electrically coupled in series. The pre-charging contactor and the resistor are electrically coupled between a high voltage terminal of the battery pack and a second end of the capacitor. The microprocessor determines a total amount of energy supplied to the resistor and induces the pre-charging contactor to have an open operational position to electrically de-couple the high voltage terminal from the second end of the capacitor, if the total amount of energy is greater than a threshold amount of energy.

Abstract translation: 提供了一种用于电动机的电压逆变器中的电容器的预充电系统。 该系统包括电耦合在电池组的接地端子和电容器的第一端之间的接地接触器。 该系统还包括预充电接触器和串联电耦合的电阻器。 预充电接触器和电阻器电耦合在电池组的高电压端子和电容器的第二端之间。 微处理器确定提供给电阻器的能量的总量，并且引起预充电接触器具有打开的操作位置，以将高压端子与电容器的第二端电耦合，如果总能量量较大 超过阈值的能量。