Faraday & Future Inc.

Tesla Motors, Inc.

Ford Global Technolgoies, LLC

Tesla, Inc.

Auto Motive Power, Inc.

Anil Paryani

Phillip John Weicker

Scott Ira Kohn

Clay Hajime Kishiyama

Michael Hong

Vineet Haresh Mehta

Omourtag Alexandrov Velev

Jana Mahen Fernando

Long Phi Huynh

Jacob Swanson

Weston Arthur Hermann

Kurt Russell Kelty

Peng Zhou

Andrew David Baglino

Evan Roger Fischer

Douglas D Chidester

Brian Stuart Boggs

Grant Dufresne Cutler

Alexander Thomas Jacobs

Eric Ryan Evenchick

Daniel Arnold Sufrin-Disler

Mike Hibbard

Vardan Markosyan

Warren Chan

Joel Karlsson

Edward Casilio

John Alser

Boaz Jie Chai

Steven E Schulz

Aziz Umit Batur

Bibhrajit Halder

Eahab Nagi El Naga

Troy Adam Nergaard

Craig Bruce Carlson

John Henry Harris, Iii

Hong S Bae

Nicholas John Sampson

Chuen Chou

Joseph Michael Darragh

Caio D Gubel

Garrett David Heinen

Xu Yan

Mayank Sikaria

William Alan Beverley

John Steven Linehan

Isaac Benjamin Meadows

Nabiha Naquib Iqra

Kameron Fraige Saad Buckhout, Sr

Andrew Almendares

Garrett Heinen

Isaac Ng

Jana Fernando

Larry Way-Jay Juang

Ruxiu Zhao

Troy A Nergaard

A battery management system (BMS) connected to a battery having a positive end and a negative end, the BMS also connected to a fast charger. The BMS includes: a battery management controller protection circuit board (PCB) configured to manage an operation of the battery; a charger controller PCB configure to control fast charging of the battery; and a fast charge contactor positioned between one of the positive and negative ends of the battery and the fast charger. No fast charge contactor is positioned between the other of the positive and negative ends of the battery and the fast charger. The BMS is configured to determine a location of an isolation fault by connecting and disconnecting one or more resistors.

Low cost fast charge contactor for high voltage battery management systems

A combined battery management system, charger, and direct current converter (BCD) for an electric vehicle is disclosed. The combined unit includes an enclosure enclosing: an on board charger (OBC); a direct current converter (DC-DC); and a single cold plate thermally coupled to both the OBC and the DC-DC, the single cold plate configured to provide cooling for both the OBC and the DC-DC. The combined unit also includes a plurality of 12V terminal posts on the enclosure, at least one of the plurality of 12V terminal posts for 12V in and at least two of the plurality of 12V terminal posts for 12V outs.

Combined BMS, charger, and DC-DC in electric vehicles

Disclosed herein are electric vehicles with various characteristics. For example, electric vehicles with at least two energy storage systems are described. As another example, electric vehicles with liquid temperature regulated battery packs are described. As yet another example, electric vehicles with high voltage battery limit optimization are disclosed. And, as another example, electric vehicles with dual-battery system charge management are described.

Electric vehicle battery management

A controller of an electric vehicle is disclosed. The controller includes: a BMS LV module configured to manage a low voltage battery; a BMS HV module configured to manage a high voltage battery; a DC-DC module configured to control a plurality of DC-DC FETs; and an ampSwitch module configured to detect a short on a bus and switch to an open state, and further configured to command the DC-DC module or an alternator to match the low battery's voltage and switch to a closed state when voltage returns to normal.

A controller for use in a battery charging system includes processing circuitry configured to perform certain tasks during battery charging operations, and other tasks during operational use of the battery. During a charging operation, the controller receives a measured DC impedance of a propulsion battery measured by a battery data acquisition and monitoring subsystem, obtains a reference DC impedance of a hypothetical battery, and determines an impedance degradation factor of the propulsion battery using the measured DC impedance and the reference DC impedance. During operational use of the propulsion battery, the controller obtains an operational reference impedance of the propulsion battery, determines a real-time effective impedance for the propulsion battery based on the impedance degradation factor and the operational reference impedance, and generates a feed-forward parameter based on the real-time effective impedance.

Determining battery DC impedance

A multi-processor architecture for automated driving systems can be used to improve performance and provide design flexibility. For example, a multi-processor architecture can be used to implement command generation and safety functionality in different processors. The command generation processor can be a high performing processor compared with the safety processor. The safety processor can verify the safety of commands output from the command generation processor and provide additional I/O channels that are typically absent on high performing processors. Additionally, processing of some sensor data can be moved to expansion modules with additional processors to reduce bottlenecks and provide design flexibility for systems with different sensing requirements.

Multi-processor SoC system

The present disclosure relates to a vehicle power system. In some examples, the vehicle power system can include a plurality of redundant low-power buses coupled to respective low-power batteries. The low-power buses can be powered by a vehicle battery having a higher voltage than the voltage of the low-power batteries by way of a DCDC converter, for example. In some examples, the DCDC converter can be coupled to the low-power buses via a plurality of switches included in an Auxiliary Voltage Controller (AVC). The DCDC converter and the AVC can be housed in a common package to reduce the size, weight, and complexity of the power system while also improving the power system's durability.

System and method for integration of redundant bus architecture into a power system

Systems and methods for communication between a vehicle system and a secure communication bus are disclosed. Systems can include a microcontroller and a transceiver configured to send transmit data to the communication bus, receive data from the communication bus, and send data received from the communication bus to the microcontroller. The microcontroller may be prevented from transmitting data to the transceiver by hardware separation between an output of the microcontroller and the transmit data input of the transceiver. The communication bus may be a CAN bus.

CAN listen only configuration for safety critical systems

Certain embodiments are described that provide a method for measuring battery parameters under discharge/charge. (a) A battery at rest is provided having an initial State of Charge (SoC). (b) A discharge/charge excitation is applied for a first period of time. (c) The battery is allowed to rest for a second period of time. (d) A discharge/charge is applied, having a higher current and shorter duration than the discharge/charge of step (b). (e) The battery is allowed to rest for a third period of time. (f) Steps (b)-(d) are repeated. Parameters of the battery are measured during a plurality of the steps.

Method for measuring battery parameters under discharge or charge

Serial communication verification and safety control is disclosed. A multi-part system such as a battery management system can include distributed or subsidiary components for determining status of various parts of the system with the components in serial or point-to-point communication with a collective main controller. A safety controller can be implemented to passively be coupled to the serial or point-to-point communication between the main controller and the subsidiary units. The safety controller can monitor and verify the communication between the main controller and the subsidiary units and send a safety command or verification indicator in another line of communication separate from the communication bus between the main controller and the subsidiary units.

Serial communication safety controller

A battery level management system for an electric vehicle during a powered down and uncharged period is disclosed. A current output from a low voltage battery of the electric vehicle being above a threshold can be sensed to wake up a control unit associated with the low voltage battery without waking up or fully powering other control units. Upon waking up, the control unit associated with the low voltage battery can start monitoring the current output from the low voltage battery and controlling the power drawn from the low voltage battery by enabling or disabling other control units to manage the remaining low voltage battery power level.

Vehicle power management

An adaptive and adjustable isolation fault testing of a multi-string battery of an electric vehicle is disclosed. The isolation fault testing can be performed in an adjustable or predetermined loop having dedicated time windows for respective battery strings in compliance with the system requirements, specification, and regulatory regime.

Electric vehicle battery test

A battery management system (BMS) connected to a battery is disclosed. The battery management system includes a battery status component configured to detect one or more parameters of the battery; a timer component configured to compute an amount of time needed to recharge the battery based on one or more of the parameters of the battery; and a scheme initiation component configured to determine an optimal time to begin charging based on the amount of time needed to recharge the battery.

Systems and methods for intelligently charging battery cells

A method and apparatus for measuring battery cell DC impedance by controlling charging of the battery cell. The method includes real-time characterization of a battery, (a) measuring periodically a DC impedance of the battery to determine a measured DC impedance; (b) ratioing the measured DC impedance to a reference DC impedance for the battery to establish an impedance degradation factor; (c) obtaining, during use of the battery and responsive to a set of attributes of the battery, an operational reference impedance for the battery; and (d) applying the impedance degradation factor to the operational reference impedance to obtain a real-time effective impedance for the battery.

A charging station can be autonomously coupled to an electric vehicle. Sensors on the vehicle determine a location of the vehicle, and the vehicle is positioned within a connection envelope. A travel path for bringing a charging connector into contact with a charging port on the vehicle can be determined, and then the travel path is autonomously carried out. A charging station may include a mount, a bracket, and a charging connection.

Autonomous vehicle charging station connection

Growing community of inventors

Cerritos, CA, United States of America

Anil Paryani