Abstract:
Present embodiments include a control system for one or more battery cells. The control system includes a bi-stable relay configured to switch a state of the bi-stable relay upon receiving a control signal to electrically connect or electrically disconnect the one or more battery cells to a bus and to remain in the state after receiving the control signal. The control system includes a controller configured to be operatively coupled to the bi-stable relay and configured to send the control signal indicative of instructions to control operation of the bi-stable relay based on the state.
Abstract:
One embodiment of the present disclosure describes a battery system including a battery module with a first and second cell group connected in series; and a cell control unit communicatively coupled to a plurality of sensors, in which the cell control unit includes a first analog-to-digital converter that outputs a first cell group voltage; a second analog-to-digital converter that output a second cell group voltage; outputs a measured battery module voltage; and logic circuitry that determines a calculated battery module voltage based at least in part on the first cell group voltage and the second cell group voltage; and determines whether a fault is expected to be present in the cell control unit, the battery module, or both based at least in part on the measured battery module voltage and the calculated battery module voltage.
Abstract:
An energy storage system may include one or more battery packs, wherein one terminal of the one or more battery packs is electrically coupled to a resistor representative of an isolation resistance of the energy storage system, a semiconductor relay switch, a plurality of resistors configured to electrically couple to the one or more battery packs via the semiconductor relay switch, a gain field-effect transistor (FET) configured to electrically short at least one resistor of the plurality of resistors, one or more capacitors electrically couples to a system ground of a vehicle and the one or more battery packs, and a control system configured to control the semiconductor relay switch and the gain FET.
Abstract:
A printed circuit board (PCB) assembly 58 may include a PCB 136 and a high current interconnect 140 mounted on the PCB 136. The high current interconnect 140 may be configured to electrically couple a first high current bladed component 153, a second high current bladed component 154, and a trace disposed on the PCB 136. The high current interconnect 140 may include feet 145 made of a conductive material that are coupled to the PCB 136. The trace may be coupled to the feet 148 via a weld.
Abstract:
A battery control system architecture design system that stores an objective function. The battery control system architecture design system determines implementation of battery systems intended be compatible with a battery control system architecture; determines target control levels to be provided by battery control systems based at least in part on the implementation of the battery systems; determines target functions to be provided by the battery control systems based at least in part on the implementation of the battery systems; determines infrastructure expected to be used to provide each of the target functions; and determines the battery control system architecture by dividing the target functions between the target control levels based at least in part on the objective function and the infrastructure, in which the battery control system architecture provides building blocks used to implement each of the battery control systems.
Abstract:
A battery system may include an energy storage component (14) the couples to an electrical system (42). The battery system may also include a first semiconductor switching device and a second semiconductor switching device (44, 46). The first semiconductor switching device and the second semiconductor switching device (44,46) each selectively couple the energy storage component (14) to the electrical system (42). Additionally, the battery system may include a first diode coupled in parallel with the first semiconductor switching device and a second diode coupled in parallel with the second semiconductor switching device (48,54). Further, the battery system may include a battery management system (36) that controls operation of the first semiconductor switching device and the second semiconductor switching device (44,46) to selectively couple the energy storage component (14) to the electrical system (42). The battery management system may selectively couple the energy storage component (14) to the electrical system based on an output current measurement (64) of the energy storage component (14).
Abstract:
The present disclosure includes a method that includes receiving, via a processor disposed within a lithium ion battery module, a voltage signal associated with a resistor coupled to a negative terminal of the lithium ion battery module. The negative terminal of the lithium ion battery module is coupled to a negative terminal of a lead acid battery module. The method also includes determining, via the processor, one or more properties associated with the lead acid battery module based on the voltage signal.
Abstract:
One embodiment of the present disclosure describes a battery control system including a first string control unit that controls operation of a first battery string and outputs a first serial communication signal, in which the first serial communication signal comprises a first frequency to indicate that the first string control unit is a master string control unit when a fault is not detected; and a second string control unit that controls operation of a second battery string; receives the first serial communication signal; determines that the second string control unit is a subordinate string control, unit when the first serial communication signal comprises the first frequency; and outputs a second serial communication signal, in which the second serial communication signal comprises a second frequency to indicate that the second string control unit is the first subordinate string control unit when a fault is not detected.
Abstract:
One embodiment of the present disclosure describes a battery system that includes a battery string with a first and second battery module connected in series; and a battery control system that includes a cell control unit electrically coupled to the first battery module, in which the first cell control unit determines first module level operational parameters related to operation of the first battery module; an integrated string control unit electrically coupled to the second battery module, in which the integrated string control unit determines second module level operational parameters related to operation of the second battery module; determines string level operational parameters related to operation of the battery string based at least in part on the first module level operational parameters and the second module level operational parameters; and controls operation of the battery string based at least in part on the string level operational parameters.
Abstract:
The present disclosure includes a battery module having a housing that includes a lid and a battery cell with a battery cell terminal and a battery cell vent on an end of the battery cell. The battery cell vent is configured to exhaust battery cell effluent. The battery module includes a printed circuit board positioned in an immediate vent direction of the battery cell, a vent shield channel positioned between the battery cell vent and the printed circuit board along the immediate vent direction of battery cell effluent, where the vent shield plate is immediately adjacent to the printed circuit board and configured to block the effluent from contacting the printed circuit board and to redirect the battery cell effluent along a desired vent path, and a module vent fluidly coupled to the desired vent path and configured to direct the battery cell effluent out of the battery module.