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11. 发明授权

US10821977B1 Pre-loading drivetrain to minimize electric vehicle rollback and increase drive responsiveness 有权
公开(公告)号：US10821977B1
公开(公告)日：2020-11-03
申请号：US16191996
申请日：2018-11-15
申请人： Motiv Power Systems, Inc.
发明人： Elias Stein , Justin Tomlin , Tai-Sik Hwang , James Michael Castelaz
IPC分类号： B60W30/18 , B60W10/08 , B60W30/188
摘要： Pre-loading drivetrain to minimize electric vehicle rollback and increase drive responsiveness. In an exemplary embodiment, a method includes (a) detecting that an electric vehicle is stationary, a brake is engaged, and an accelerator is not engaged, and (b) controlling a vehicle motor to transition from a first mode to a second mode in response to (a). In the first mode, the motor is controlled to output torque in response to the accelerator position, and in the second mode, the motor is controlled to output torque sufficient to preload the electric vehicle. The method also includes (c) detecting the brake is transitioning away from being engaged and the accelerator is not engaged, and (d) controlling the motor to operate in a third mode in response to (c). In the third mode the motor is controlled to output torque sufficient to maintain the electric vehicle stationary.

12. 发明授权

US10457159B1 Power share converter for connecting multiple energy storage systems 有权
公开(公告)号：US10457159B1
公开(公告)日：2019-10-29
申请号：US15250906
申请日：2016-08-29
申请人： Motiv Power Systems, Inc.
发明人： Jim Michael Castelaz , Elias Stein , William Treichler
IPC分类号： H02J1/10 , H02J3/06 , H02J3/46 , B60L53/22 , H02P27/06 , H02P29/66 , B60L1/02
摘要： A system comprises a plurality of power converters, a plurality of energy storage systems, a first common node, a second common node, and zero-reference voltage node. Each power converter is coupled between one energy storage system and the first and second common nodes. The system operates to regulate power between the power converters and the first and second common nodes. Each power converter is a bi-directional power converter and each energy storage system is a battery pack. In one example, the first common node is regulated to a voltage VSPAN, and the second common node is regulated to a voltage VSCN which is the mean of all voltages output by the battery packs. In another example, the first common node is regulated to a voltage −VSPAN, and the second common node is regulated to a voltage +VSPAN. No power converter processes more than voltage VSPAN yielding high-efficiency power conversion.

13. 发明授权

US09000727B2 System and method for balancing charge within a battery pack 有权
标题翻译：用于平衡电池组中的充电的系统和方法
公开(公告)号：US09000727B2
公开(公告)日：2015-04-07
申请号：US13954598
申请日：2013-07-30
申请人： Motiv Power Systems, Inc.
发明人： Jim Castelaz , Jessica Riley , Vishal Parikh , Steven Diamond , Samuel Chang
IPC分类号： H02J7/00 , H02J7/34 , G05B13/00
CPC分类号： H02J7/0019 , G05B13/00 , H02J7/345 , Y02T10/7055
摘要： A system for balancing charge within a battery pack with a plurality of cells connected in series, including a capacitor; a processor configured to select a combination of donor cells and receiver cells from the plurality of cells in one of the following two modes: (1) a first mode where the number of donor cells is equal to the number of receiver cells, and (2) a second mode where the number of donor cells is greater than the number of receiver cells; and a plurality of switches that electrically connect the capacitor to the donor cells to charge the capacitor, and that electrically connected the capacitor to the receiver cells to discharge the capacitor. The transfer of charge between cells in the plurality of cells through the capacitor balances the charge within the battery pack.
摘要翻译：一种用于平衡电池组中的电荷的系统，其中多个单元串联连接，包括电容器; 处理器，其被配置为以下述两种模式之一从所述多个单元中选择供体单元和接收器单元的组合：（1）第一模式，其中供体单元的数量等于接收器单元的数量，以及（2 ）第二模式，其中供体细胞的数量大于接收器细胞的数量; 以及多个开关，其将所述电容器电连接到所述施主单元以对所述电容器充电，并且将所述电容器电连接到所述接收器单元以对所述电容器进行放电。通过电容器在多个电池中的电池之间的电荷转移平衡了电池组内的电荷。

14. 发明授权

US11870240B1 EFuse for use in high voltage applications 有权
公开(公告)号：US11870240B1
公开(公告)日：2024-01-09
申请号：US17538525
申请日：2021-11-30
申请人： Motiv Power Systems, Inc.
发明人： Venkatesh Prasad Hanglur Narasimha , James Michael Castelaz
IPC分类号： H02H3/20 , G08B23/00 , H02H9/04 , H02H3/08 , H02H3/38 , H02H7/22 , H02H1/04
CPC分类号： H02H3/20 , G08B23/00 , H02H3/08 , H02H3/207 , H02H3/38 , H02H9/04 , H02H1/04 , H02H1/043 , H02H7/22
摘要： An eFuse for use in high voltage applications is disclosed. In one embodiment, an apparatus includes a solid-state switch having source and drain terminals connected to switch a load current from a high voltage source through a high voltage load. The apparatus also includes a sense circuit that senses a voltage between the switch source and drain terminals and turns off the switch when the voltage exceeds a selected voltage level.

15. 发明授权

US11498443B1 Electric vehicle with precharge mode 有权
公开(公告)号：US11498443B1
公开(公告)日：2022-11-15
申请号：US17120257
申请日：2020-12-13
申请人： Motiv Power Systems, Inc.
发明人： Sowmya Akella , James Michael Castelaz , Venkatesh Prasad Hanglur Narasimha , Joshua Sealand
IPC分类号： B60L53/62 , H02J7/00 , B60L53/20 , B60L58/10 , B60L3/00 , B60L53/22
摘要： A system comprises an EVSE and an electric vehicle having a precharge mode. To charge a battery, the vehicle is connected to the EVSE. In some cases, the battery is unable to energize power buses. For example, if the battery is too cold and has insufficient charge, then the battery will not energize the power buses. If the battery cannot energize the power buses, then a precharge mode is enabled. During the precharge mode, charge is pumped onto two power buses until a setpoint voltage is reached. For example, a precharge circuit pumps charge onto one power bus and a power converter pumps charge from that bus onto a second bus. Once the setpoint voltage is reached, a current source charger is enabled, and energy stored on both buses is used to facilitate the turn-on of the charger, the precharge mode is disabled, and the EVSE charges the battery.

16. 发明授权

US10180460B1 Performing active interrogation of battery packs in situ to obtain precise SOC and SOH estimates 有权
公开(公告)号：US10180460B1
公开(公告)日：2019-01-15
申请号：US15411946
申请日：2017-01-20
申请人： Motiv Power Systems, Inc.
发明人： James Michael Castelaz
IPC分类号： G01R31/36 , B60L11/18 , H02J7/00
摘要： A characteristic, such as State Of Health (SOH) or State Of Charge (SOC), is estimated for an Energy Storage System (ESS) by supplying a pre-determined signal to the ESS, measuring a response signal output by the ESS, and obtaining an impedance spectrum of the ESS. In one example, the ESS is one of several electrochemical battery packs of an electric vehicle. The pre-determined signal is a current signal generated by a switching power converter that transfers charge from the battery pack to other battery packs or transfers charge from the other battery packs onto the battery pack. The pre-determined signal is generated without disrupting any load supplied by the battery packs. The battery pack outputs a voltage signal in response to receiving the pre-determined current signal. A processor obtains an impedance spectrum using the current and voltage signals, and thereby obtains an SOH and SOC estimate of the battery.

17. 发明授权

US10139848B1 Generating leakage canceling current in electric vehicle charging systems 有权
公开(公告)号：US10139848B1
公开(公告)日：2018-11-27
申请号：US15611734
申请日：2017-06-01
申请人： Motiv Power Systems, Inc.
发明人： William Treichler , James Michael Castelaz , Grayson Zulauf
IPC分类号： H02J7/00 , G05F3/02 , B60L11/18
摘要： A system includes a power source, a power converter, a leakage current cancelation circuit, a load, and a ground node. The power converter is coupled to the power source and supplies the load. During operation of the power converter, a common mode current flows from the load to the ground node via a leakage capacitance. The leakage current cancelation circuit receives at least one signal indicative of the common mode current and generates a leakage cancelation current that is injected into at least one node of the system. The leakage cancelation current has a magnitude opposite a magnitude of the common mode current. For example, the leakage current cancelation circuit receives supply voltage signals output by the power converter, and generates and supplies the leakage cancelation current onto input nodes of the power converter such that a current level on the ground node is between −3.0 milliamperes and +3.0 milliamperes.

18. 发明授权

US09696743B1 Generating leakage canceling current in electric vehicle charging systems 有权
公开(公告)号：US09696743B1
公开(公告)日：2017-07-04
申请号：US14614118
申请日：2015-02-04
申请人： Motiv Power Systems, Inc.
发明人： William Treichler , James Michael Castelaz , Grayson Zulauf
IPC分类号： H02J7/00 , G05F3/02 , B60L11/18
CPC分类号： G05F3/02 , B60L3/0069 , B60L11/1812
摘要： A system includes a power source, a power converter, a leakage current cancelation circuit, a load, and a ground node. The power converter is coupled to the power source and supplies the load. During operation of the power converter, a common mode current flows from the load to the ground node via a leakage capacitance. The leakage current cancelation circuit receives at least one signal indicative of the common mode current and generates a leakage cancelation current that is injected into at least one node of the system. The leakage cancelation current has a magnitude opposite a magnitude of the common mode current. For example, the leakage current cancelation circuit receives supply voltage signals output by the power converter, and generates and supplies the leakage cancelation current onto input nodes of the power converter such that a current level on the ground node is between −3.0 milliamperes and +3.0 milliamperes.

19. 发明授权

US11498449B1 Charging apparatus and methods to support multiple charging devices 有权
公开(公告)号：US11498449B1
公开(公告)日：2022-11-15
申请号：US16589059
申请日：2019-09-30
申请人： Motiv Power Systems, Inc.
发明人： Shivam Gupta , James Michael Castelaz
IPC分类号： B60L58/10 , B60L53/16 , B60L53/63 , B60L53/30 , H01M10/44 , B60L53/18 , H03K7/08 , B60W10/24 , B60L53/22
摘要： Charging apparatus and methods are provided that support multiple charging devices. In an embodiment, a charging apparatus includes a secondary signal generator (SSG) and an output circuit. The SSG receives charging control signals and generates one or more secondary charging control signals. The output circuit outputs the charging control signals to a primary charging device and the one or more secondary charging control signals to one or more secondary charging devices, thereby enabling the use of multiple charging devices in battery applications. In an embodiment, the secondary charging signals are pulse width modulated to control the current output of the secondary charging devices to avoid over-current conditions.

20. 发明授权

US11474154B1 Performing active interrogation of battery packs in situ to obtain precise SOC and SOH estimates 有权
公开(公告)号：US11474154B1
公开(公告)日：2022-10-18
申请号：US16232022
申请日：2018-12-25
申请人： Motiv Power Systems, Inc.
发明人： James Michael Castelaz
IPC分类号： G01N27/416 , G01R31/367 , H02J7/00 , G01R31/392 , G01R31/389 , B60L58/12 , B60L58/18 , G01R31/382
摘要： A characteristic, such as State Of Health (SOH) or State Of Charge (SOC), is estimated for an Energy Storage System (ESS) by supplying a pre-determined signal to the ESS, measuring a response signal output by the ESS, and obtaining an impedance spectrum of the ESS. In one example, the ESS is one of several electrochemical battery packs of an electric vehicle. The pre-determined signal is a current signal generated by a switching power converter that transfers charge from the battery pack to other battery packs or transfers charge from the other battery packs onto the battery pack. The pre-determined signal is generated without disrupting any load supplied by the battery packs. The battery pack outputs a voltage signal in response to receiving the pre-determined current signal. A processor obtains an impedance spectrum using the current and voltage signals, and thereby obtains an SOH and SOC estimate of the battery.

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