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1. 发明授权

US11888310B1 Methods and apparatus for precharge monitoring of high voltage circuits 有权
公开(公告)号：US11888310B1
公开(公告)日：2024-01-30
申请号：US17412017
申请日：2021-08-25
申请人： Motiv Power Systems, Inc.
发明人： Venkatesh Prasad Hanglur Narasimha , James Michael Castelaz
IPC分类号： H02H9/00 , H02H9/04
CPC分类号： H02H9/001 , H02H9/045
摘要： Methods and apparatus to monitor the precharging of high voltage circuits are disclosed. In one embodiment, an apparatus includes a switch that selectively enables or disables precharge current to a high voltage circuit based on a switch control signal. The apparatus also includes a comparison circuit that compares a scaled version of a circuit voltage to a reference voltage to generate the switch control signal. In one embodiment, the switch control signal is generated to enable the precharge current when the scaled version of the circuit voltage is greater than the reference voltage.

2. 发明授权

US10809755B1 Generating leakage canceling current in electric vehicle charging systems 有权
公开(公告)号：US10809755B1
公开(公告)日：2020-10-20
申请号：US16172036
申请日：2018-10-26
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 , B60L53/20
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.

3. 发明授权

US09513324B1 System and method of load testing multiple power converters without dedicated test equipment 有权
标题翻译：负载测试多个电源转换器的系统和方法，无需专用测试设备
公开(公告)号：US09513324B1
公开(公告)日：2016-12-06
申请号：US14214380
申请日：2014-03-14
申请人： Motiv Power Systems, Inc.
发明人： William Treichler , Cullen Teague McMahon , Justin Anthony Tomlin , James Michael Castelaz
IPC分类号： G01R31/02
CPC分类号： G01R31/02 , G01R31/42
摘要： A test system includes a first, second, and third power converter and a data collection system. The test system performs load testing on the second and third power converters without requiring any external load. The first power converter is supplied by an Alternating Current (AC) source. During a test cycle, the first, second, and third power converters are controlled such that the second power converter is supplied by an output current of the first power converter and a feedback current output by the third power converter. The third power converter receives current output by the second power converter and outputs the feedback current onto the second power converter. The data collection system receives power converter test characteristics (voltage, current, and temperature information) during the test cycle without any power being dissipated by an external load. Test information is used to determine whether the second and third power converters are defective.
摘要翻译：测试系统包括第一，第二和第三功率转换器和数据采集系统。测试系统对第二和第三电源转换器进行负载测试，而不需要任何外部负载。第一个电源转换器由交流电源提供。在测试周期期间，控制第一，第二和第三功率转换器，使得第二功率转换器由第一功率转换器的输出电流和由第三功率转换器输出的反馈电流提供。第三功率转换器接收第二功率转换器的电流输出并将反馈电流输出到第二功率转换器。数据采集系统在测试周期内接收功率转换器测试特性（电压，电流和温度信息），而不会由外部负载消耗任何功率。测试信息用于确定第二和第三功率转换器是否有缺陷。

4. 发明申请

US20140084870A1 SYSTEM AND METHOD FOR BALANCING CHARGE WITHIN A BATTERY PACK 有权
标题翻译：用于在电池组中平衡电荷的系统和方法
公开(公告)号：US20140084870A1
公开(公告)日：2014-03-27
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
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。

5. 发明授权

US12146780B1 Real-time reporting and estimating of mass of vehicles using drive characteristics 有权
公开(公告)号：US12146780B1
公开(公告)日：2024-11-19
申请号：US18367150
申请日：2023-09-12
申请人： Motiv Power Systems, Inc.
发明人： Tai-Sik Hwang , Justin Tomlin , Elias Stein , James Michael Castelaz
IPC分类号： G01G19/08 , B60W40/076 , G01G19/02 , G07C5/08
CPC分类号： G01G19/022 , B60W40/076 , G01G19/08 , G07C5/08
摘要： A vehicle includes a vehicle mass estimator circuit. The vehicle mass estimator circuit is configurable to estimate a mass of vehicle during real-time operation of the vehicle without employing a scale or dedicated mass sensing system. The vehicle mass estimator circuit generates the vehicle mass Mv from: (1) an estimated torque or sensed torque, (2) an estimated motor angular velocity or sensed motor angular velocity, and (3) sensed acceleration or without any sensed acceleration. In one embodiment, the vehicle mass estimator circuit senses motor current during vehicle operation and estimates a mass of the vehicle using the motor current without any dedicated acceleration sensor such as an accelerometer. A motor angular velocity is estimated from the motor current. In another embodiment, the vehicle mass estimator circuit senses motor current during vehicle operation and estimates a mass of the vehicle using the motor current and acceleration information provided by an accelerometer.

6. 发明授权

US11882446B1 Vehicle charge station network access credential updating system 有权
公开(公告)号：US11882446B1
公开(公告)日：2024-01-23
申请号：US17383343
申请日：2021-07-22
申请人： Motiv Power Systems, Inc.
发明人： James Michael Castelaz , Joseph O. DeAngelo
IPC分类号： H04W12/069 , G06F9/54
CPC分类号： H04W12/069 , G06F9/547
摘要： A network access credential change request is received onto a network access credential updating system. The network access credential change request is a request to update access credentials of a network near a vehicle charge station. The new credential in the request is communicated to an electric vehicle. The network is updated with the network access credential. The vehicle is able to connect to the network with the updated credential after the network has been updated. In one embodiment, the network access credential updating system includes an application. A charge station operating entity communicates a network access credential change request for a particular network to the application. After sending the request, the charge station operating entity updates the network access credential for the network in accordance with a credential update agreement. The credential update agreement tends to afford adequate opportunity for vehicles to receive updated credentials before networks are updated.

7. 发明授权

US11754434B1 Real-time reporting and estimating of mass of vehicles using drive characteristics 有权
公开(公告)号：US11754434B1
公开(公告)日：2023-09-12
申请号：US16192147
申请日：2018-11-15
申请人： Motiv Power Systems, Inc.
发明人： Tai-Sik Hwang , Justin Tomlin , Elias Stein , James Michael Castelaz
IPC分类号： G01G19/08 , G07C5/08 , B60W40/076 , G01G19/02
CPC分类号： G01G19/022 , B60W40/076 , G01G19/08 , G07C5/08
摘要： A vehicle includes a vehicle mass estimator circuit. The vehicle mass estimator circuit is configurable to estimate a mass of vehicle during real-time operation of the vehicle without employing a scale or dedicated mass sensing system. The vehicle mass estimator circuit generates the vehicle mass Mv from: (1) an estimated torque or sensed torque, (2) an estimated motor angular velocity or sensed motor angular velocity, and (3) sensed acceleration or without any sensed acceleration. In one embodiment, the vehicle mass estimator circuit senses motor current during vehicle operation and estimates a mass of the vehicle using the motor current without any dedicated acceleration sensor such as an accelerometer. A motor angular velocity is estimated from the motor current. In another embodiment, the vehicle mass estimator circuit senses motor current during vehicle operation and estimates a mass of the vehicle using the motor current and acceleration information provided by an accelerometer.

8. 发明授权

US11364811B1 Powering electric vehicle accessory devices from back EMF generated by an electric motor 有权
公开(公告)号：US11364811B1
公开(公告)日：2022-06-21
申请号：US16191444
申请日：2018-11-15
申请人： Motiv Power Systems, Inc.
发明人： Elias Stein , Tai-Sik Hwang , Justin Tomlin , James Michael Castelaz
IPC分类号： H02P27/08 , B60L58/10 , B60L1/00 , H02M7/5387 , H02M3/158
摘要： A controller generates a target motor torque and target accessory power information during operation of an electric vehicle. The target motor torque and target accessory power information maintain a DC-link of the electric vehicle powertrain within a safe DC-link operating range. The DC-link has a DC-link voltage that is used to supply an accessory device and a motor. The accessory device is disposed on the electric vehicle and includes vehicle indictors, hydraulics, or any other accessory involved in the operation of the vehicle. The motor drives the vehicle. The controller receives the DC-link voltage, motor speed, desired output torque information, desired accessory power information, and the safe DC-link operating range and generates therefrom the target motor torque and the target accessory power information.

9. 发明授权

US11201459B1 EFuse for use in high voltage applications 有权
公开(公告)号：US11201459B1
公开(公告)日：2021-12-14
申请号：US16865273
申请日：2020-05-01
申请人： Motiv Power Systems, Inc.
发明人： Venkatesh Prasad Hanglur Narasimha , James Michael Castelaz
IPC分类号： H02H3/20 , H02H9/04 , G08B23/00 , H02H3/08 , H02H3/38 , H02H1/04 , 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.

10. 发明授权

US09568930B2 System and method for managing a power system with multiple power components 有权
标题翻译：用于管理具有多个功率部件的电力系统的系统和方法
公开(公告)号：US09568930B2
公开(公告)日：2017-02-14
申请号：US14231728
申请日：2014-03-31
申请人： Motiv Power Systems, Inc.
发明人： Jim Michael Castelaz , Jessica Riley , Steven Diamond , Sam Chang , Vishal Parikh , Benson Tsai
IPC分类号： H02J1/12 , H02J3/00 , G05F1/66 , H02J4/00 , B60L11/18 , G05B15/02 , H02J1/10
CPC分类号： G05F1/66 , B60L11/1842 , G05B15/02 , H02J1/102 , H02J4/00 , H02J2001/106 , Y02E60/721 , Y02T10/7005 , Y02T10/7072 , Y02T90/121 , Y02T90/128 , Y02T90/14 , Y02T90/163 , Y04S10/126 , Y10T307/32 , Y10T307/359 , Y10T307/406 , Y10T307/50 , Y10T307/511 , Y10T307/516 , Y10T307/527
摘要： According to a preferred embodiment of the invention, the system for managing a power system with a plurality of power components that includes power source components and power consumption components includes a central power bus, a plurality of adaptable connectors that each electrically couple to a power component and to the central power bus, and a control processor that receives the state of each power component from the respective adaptable connector and is configured to balance the voltage and current output from each power source component to provide a desired power to a power consumption component based on the received states.
摘要翻译：根据本发明的优选实施例，用于管理包括电源组件和功率消耗部件的多个功率部件的电力系统的系统包括中央电力总线，多个可适应的连接器，每个电连接器电耦合到功率部件以及控制处理器，其从相应的可适应连接器接收每个功率分量的状态，并且被配置为平衡来自每个电源组件的电压和电流输出，以基于功率消耗组件提供期望的功率在收到的州。

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