Abstract: A controller of a machine identifies that a battery of the machine is connected to an electrical power connector component. The controller then causes one or more charging components of the battery of the machine to be enabled, then cause one or more electrical components associated with the battery of the machine to be enabled, then causes one or more cooling components of the machine to be enabled, then causes one or more propulsion components of the machine to be disabled, then causes one or more accumulator components of a hydraulic system of the machine to bleed, and then causes one or more non-accumulator components of the hydraulic system of the machine to be enabled. In this way, the controller causes the battery of the machine to enter into a charging state.

Abstract: As part of a start-up sequence, a controller of a machine causes one or more activation components of a battery of the machine to be enabled, then causes one or more electrical components associated with the battery to be enabled, then causes one or more non-accumulator components of a hydraulic system to be enabled, then causes one or more accumulator components of the hydraulic system to charge, and then causes one or more propulsion components to be enabled. As part of a shut-down sequence, the controller causes the one or more propulsion components to be disabled, then causes the one or more accumulator components of the hydraulic system to bleed, then causes the one or more non-accumulator components of the hydraulic system to be disabled, and then causes the one or more electrical components associated with the battery to be disabled.

Abstract: An example energy source for a work machine includes multiple battery cells connectable in parallel to form a battery system having a high pole and a low pole, a load bus to distribute energy from the battery system to the work machine, and a single point of connection between the battery system and the load bus. The single point of connection is a connector including a dual-pole single-throw (DPST) switch. The DPST switch includes a dual-switched circuit path to connect the high pole and the low pole to the load bus, and a single-switched circuit path to provide a switched connection of a high voltage interlock loop (HVIL) circuit.

Abstract: Systems and methods for an adjustable gas block are described. Systems may include an adjustment subassembly. The adjustment subassembly may include a valve stem end with a front-most portion larger in diameter than the rear-most portion and a boss extending from the forward portion of the valve stem end; a valve ring surrounding the boss of the valve stem end; a valve threaded portion for receiving the boss of the valve stem end and having a threaded portion; and a valve rotator coupled to the valve threaded portion for adjusting the flow of gas. Systems may include a gas block assembly. The gas block assembly may include a gas block through hole; a first duct to direct pressurized gas from a barrel to a plenum; a second duct to direct a regulated volume of gas to a gas operating system; a seat valve to control the regulated volume of gas to the gas operating system; and a gas block threaded portion for coupling to the valve threaded portion.

Abstract: A battery management system configured to couple to at least one battery module, the battery management system includes a contact configured to couple between the at least one battery module and a machine, a sensor configured to sense an electrical parameter of the at least one battery module, and a control circuit configured to receive an output of the sensor and determine a value of the electrical parameter. The sensor includes an inverting charge pump coupled to receive a positive supply voltage and generate a negative supply voltage, and a differential amplifier coupled to the at least one battery module and supplied by the positive supply voltage and the negative supply voltage, the differential amplifier configured to generate an output representing the electrical parameter.

Abstract: A driving circuit to control/drive a contactor using a high-side driver integrated into the battery pack controller. The driver circuit may electrically isolate the controller pins of the battery pack controller (which interface the contactors) from the low-voltage digital processing core of the battery pack controller. The driver circuit may provide techniques to diagnose a fault by monitoring the voltage at the output of the driver as compared to the reference voltage. The driver circuit may include an electronic switch, such as a field-effect transistor, that is configured on the high side of the contactor to control voltage from an energy source to the contactor.

Abstract: A battery system for a machine includes one or more battery module cell bus bars, one or more terminal bus bars, an interconnect system, and a battery module circuit. The one or more terminal bus bars include a coupling configured to couple the battery system to one or more components of the machine. The interconnect system couples the one or more battery module cells to the one or more terminal bus bars. The battery module circuit is coupled to one or more portions of the interconnect system. The battery module circuit includes one or more thermistors positioned at least partially overlapping with the one or more terminal bus bars.

Abstract: A monitoring circuit for a battery system of a work machine includes a system controller configured to operate in a low power mode when the battery system is inactive, a sensing circuit element configured to produce an electrical sensor signal representative of an environmental parameter of the battery system, and a wakeup circuit configured to generate a controller activation signal when the sensor signal indicates that the environmental parameter is outside of a specified operating range. The system controller is configured to initiate a controller boot operation in response to the controller activation signal.

Abstract: Systems and methods for an adjustable gas block are described. Systems may include an adjustment subassembly. The adjustment subassembly may include a valve stem end with a front-most portion larger in diameter than the rear-most portion and a boss extending from the forward portion of the valve stem end; a valve ring surrounding the boss of the valve stem end; a valve threaded portion for receiving the boss of the valve stem end and having a threaded portion; and a valve rotator coupled to the valve threaded portion for adjusting the flow of gas. Systems may include a gas block assembly. The gas block assembly may include a gas block through hole; a first duct to direct pressurized gas from a barrel to a plenum; a second duct to direct a regulated volume of gas to a gas operating system; a seat valve to control the regulated volume of gas to the gas operating system; and a gas block threaded portion for coupling to the valve threaded portion.

Abstract: A system for charging a battery unit to power a work machine. The system includes a charger to charge the battery unit, charging receptacles, power supply connectors, and a charging controller. The power supply connectors are configured to be received into the charging receptacles to attain connections between the charger and the battery unit. The charging controller is communicably coupled to the charger and is configured to receive an input corresponding to a net charge capacity of the battery unit; determine a power to be supplied to the battery unit by the charger to charge the battery unit in response to the input; and supply the power to the battery unit from the charger through the connections. The power to be supplied to the battery unit corresponds to a maximum possible power that meets the net charge capacity of the battery unit in the shortest possible time.

Abstract: Systems and methods for an adjustable gas block are described. Systems may include an adjustment subassembly. The adjustment subassembly may include a valve stem end with a front-most portion larger in diameter than the rear-most portion and a boss extending from the forward portion of the valve stem end; a valve ring surrounding the boss of the valve stem end; a valve threaded portion for receiving the boss of the valve stem end and having a threaded portion; and a valve rotator coupled to the valve threaded portion for adjusting the flow of gas. Systems may include a gas block assembly. The gas block assembly may include a gas block through hole; a first duct to direct pressurized gas from a barrel to a plenum; a second duct to direct a regulated volume of gas to a gas operating system; a seat valve to control the regulated volume of gas to the gas operating system; and a gas block threaded portion for coupling to the valve threaded portion.

Abstract: A machine may a first high voltage interlocking loop (HVIL) system to provide power to one or more components of the machine, the first HVIL system comprising: a plurality of groups of batteries; a plurality of disconnect components connected to the plurality of groups of batteries; a plurality of sets of contactors, a set of contactors, of the plurality of sets of contactors, being connected to a group of batteries of the plurality of groups of batteries. The machine may a second HVIL system to receive power from a power source, the second HVIL system comprising: a port configured to receive a connector of the power source and receive power, from the power source via the connector, to charge the plurality of groups of batteries, wherein the second HVIL system is independent with respect to the first HVIL system.

Abstract: In some aspects, a method of monitoring a battery system of an industrial vehicle is disclosed. The battery system may include a first string of battery modules including at least two battery modules connected in series; a first contactor connected to a positive end of the first string of battery modules, a second contactor connector to a negative end of the first string of battery modules; a third contactor connected to the first contactor; a fourth contactor connected to the second contactor; and one or more controllers configured to monitor the first contactor and the second contactor. The method may include receiving, at the one or more controllers, an indication of a failure of one of the first contactor and the second contactor; and opening, via the one or more controllers, at least one of the third contactor or the fourth contactor.

Abstract: Systems and methods for an adjustable gas block are described. Systems may include an adjustment subassembly. The adjustment subassembly may include a valve stem end with a front-most portion larger in diameter than the rear-most portion and a boss extending from the forward portion of the valve stem end; a valve ring surrounding the boss of the valve stem end; a valve threaded portion for receiving the boss of the valve stem end and having a threaded portion; and a valve rotator coupled to the valve threaded portion for adjusting the flow of gas. Systems may include a gas block assembly. The gas block assembly may include a gas block through hole; a first duct to direct pressurized gas from a barrel to a plenum; a second duct to direct a regulated volume of gas to a gas operating system; a seat valve to control the regulated volume of gas to the gas operating system; and a gas block threaded portion for coupling to the valve threaded portion.

Abstract: A system for charging a battery unit to power a work machine. The system includes a charger to charge the battery unit, charging receptacles, power supply connectors, and a charging controller. The power supply connectors are configured to be received into the charging receptacles to attain connections between the charger and the battery unit. The charging controller is communicably coupled to the charger and is configured to receive an input corresponding to a net charge capacity of the battery unit; determine a power to be supplied to the battery unit by the charger to charge the battery unit in response to the input; and supply the power to the battery unit from the charger through the connections. The power to be supplied to the battery unit corresponds to a maximum possible power that meets the net charge capacity of the battery unit in the shortest possible time.

Abstract: A machine includes a plurality of battery string modules that supply electric current to an inverter of the machine. The machine also includes a control system that opens at one contactor coupled to at least one battery string module of the plurality of battery string modules to disconnect the at least one battery string module. The other battery string modules of the plurality of battery string modules, apart from the at least one battery string module, continue supplying electric current to the inverter of the machine while the at least one battery string module is disconnected.

Abstract: Systems and methods for an adjustable gas block are described. Systems may include an adjustment subassembly. The adjustment subassembly may include a valve stem end with a front-most portion larger in diameter than the rear-most portion and a boss extending from the forward portion of the valve stem end; a valve ring surrounding the boss of the valve stem end; a valve threaded portion for receiving the boss of the valve stem end and having a threaded portion; and a valve rotator coupled to the valve threaded portion for adjusting the flow of gas. Systems may include a gas block assembly. The gas block assembly may include a gas block through hole; a first duct to direct pressurized gas from a barrel to a plenum; a second duct to direct a regulated volume of gas to a gas operating system; a seat valve to control the regulated volume of gas to the gas operating system; and a gas block threaded portion for coupling to the valve threaded portion.

Abstract: In some aspects, a method of monitoring a battery system of an industrial vehicle is disclosed. The battery system may include a first string of battery modules including at least two battery modules connected in series; a first contactor connected to a positive end of the first string of battery modules; a second contactor connector to a negative end of the first string of battery modules; a third contactor connected to the first contactor; a fourth contactor connected to the second contactor; and one or more controllers configured to monitor the first contactor and the second contactor. The method may include receiving, at the one or more controllers, an indication of a failure of one of the first contactor and the second contactor; and opening, via the one or more controllers at least one of the third contactor or the fourth contactor.

Abstract: A machine may a first high voltage interlocking loop (HVIL) system to provide power to one or more components of the machine, the first HVIL system comprising: a plurality of groups of batteries; a plurality of disconnect components connected to the plurality of groups of batteries; a plurality of sets of contactors, a set of contactors, of the plurality of sets of contactors, being connected to a group of batteries of the plurality of groups of batteries. The machine may a second HVIL system to receive power from a power source, the second HVIL system comprising: a port configured to receive a connector of the power source and receive power, from the power source via the connector, to charge the plurality of groups of batteries, wherein the second HVIL system is independent with respect to the first HVIL system.

Abstract: Systems and methods for an adjustable gas block are described. Systems may include an adjustment subassembly and a gas block assembly, wherein the adjustment subassembly may be coupled to the gas block assembly.