A battery system includes battery cells to store electrical energy and to output electrical power. The battery system further includes a housing, a shunt, a control board, and a connector assembly. The housing includes a cavity that the shunt is disposed in and is in direct contact with, where the cavity facilitates dissipating torsional force exerted on the shunt. The control board is disposed within the housing and includes sensing circuitry to determine an operational parameter of the battery cells and control circuitry to facilitate controlling operation of the battery cells based on the operational parameter. The connector assembly electrically couples the shunt to the sensing circuitry via a spacing connector and a securing connector. The spacing connector is disposed between the control board and an inner surface of the housing while the securing connector extends through the shunt to couple to the spacing connector through the housing.

A method and to a device for ascertaining a state of health of a battery for a transportation device. The method includes: charging the battery until a predefined target voltage is reached in a first charging phase of the battery, ascertaining a first voltage value of the battery at a first predefined point in time after the predefined target voltage has been reached in a relaxation phase of the battery, ascertaining a second voltage value of the battery at a second predefined point in time, deviating from the first predefined point in time, in the relaxation phase of the battery, ascertaining a piece of information about the state of health of the battery based on a change of the second voltage value with respect to the first voltage value, and using the piece of information in the transportation device and/or in an external server.

A battery module comprising a plurality of battery cell units, each one comprising: a battery cell having a first pole and a second pole, and a switch circuit, comprising a plurality of switches, and a switch controller arranged to control the switches of the switch circuit to enter either of a first state, in which the battery cell is connected in parallel with a neighboring battery cell, and a second state, in which the battery cell is connected in series with a neighboring battery cell. The battery module is configured to control the switching between the first and second states on a probabilistic basis.

Disclosed herein are systems and methods for energy management. A system, such as a vehicle, includes a plurality of energy storage units that include a supercapacitor and an electrochemical battery. The system includes plurality of energy storage units including a supercapacitor and an electrochemical battery, the supercapacitor comprising a plurality of selectable power sources, and an adder module including a processor. The processor is configured to execute instructions to selectively connect the supercapacitor or the electrochemical battery to an electric drivetrain to propel the vehicle. The processor may be configured to measure the selectable power sources and determine a set of the selectable power sources to connect to the system.

A computer implemented method for managing charge availability of a charge unit (CU) to obtain charge for a battery of an electric vehicle (EV) is provided. The CU includes a computer for processing at least part of the method and for communicating with a server over a network. The method includes receiving, by the server, status information from the computer of the CU. The method includes sending to the computer of the CU instructions to make a reservation for the CU. The reservation is for a user account that has requested a desire to charge the battery of the electric vehicle of the user at the CU or another CU. The method includes sending, by the server, a confirmation for the reservation to the user account. The confirmation is viewable via a device having access to the server via the user account. The method includes sending, by the server, a data regarding a time of availability of the CU to the user account for the reservation. The computer of the CU is configured to display a visual indicator regarding the reservation of the CU.

A charging system for an autonomous rover includes a charging interface with contacts that interface with the autonomous rover, a rover power source for the autonomous rover, and circuitry operated by the autonomous rover for controlling charging of the rover power source.

A vehicle includes a vehicle battery; a vehicle sensor configured to detect a current, a voltage and a temperature of the vehicle battery; and an alternator configured to output a target voltage to the vehicle battery. A controller is configured to calculate state of charge (SOC) estimation based on the current, voltage and temperature of the vehicle battery, calculate an initial SOC based on a direct current internal resistance (DCIR) map and apply the initial SOC to the SOC estimation, when an open circuit voltage (OCV) is maintained in a predetermined range after engine-off, and adjust an available SOC range based on a difference between an actual battery charge current amount, to which the initial SOC is applied, and the calculated SOC estimation.

An on-board battery charger (OBC) includes a converter (e.g., a DC/DC converter) and a controller. An output port of the converter is connectable to a battery (e.g., a traction battery of an electric vehicle (EV)) via a voltage network (e.g., a high-voltage (HV) network of the EV). The converter converts an input power into an output power and outputs the output power onto the voltage network for charging the battery. The controller, upon detecting a transitory disconnection in the voltage network, controls the converter to stop converting the input power into the output power. In stopping the converter, the controller stops the converter prior to a corresponding reconnection in the voltage network. The controller may detect the transitory disconnection upon detecting a switching frequency of a power switch of the converter decreasing below a pre-defined threshold as the switching frequency decreases due to effects of the transitory disconnection.

A utility cart includes a stored energy device that can be in the form of a Lithium Ion battery pack. The battery pack can include a main power output useful to drive high voltage components as well as the electric motor for motive power. The battery pack can also include one or more auxiliary outputs useful to provide auxiliary power to various other components. The auxiliary outputs can be either low and/or high voltage outputs. An auxiliary DC/DC output can be used to step down high voltage of the Lithium ion battery pack to lower voltages. A motor controller supply can also be provided as an auxiliary output to provide some power to a motor controller.

A parallel charging-discharging management system of multiple batteries comprises a main control module, a charging dual-MOS control module, a discharging dual-MOS control module, a communication module, a voltage sampling module, a current sampling module, a temperature sampling module, an electric quantity display module and batteries; the main control module is connected with a charging dual-MOS control module, a discharging dual-MOS control module, a communication module, a voltage sampling module, a current sampling module, a temperature sampling module and an electric quantity display module; the charging dual-MOS control module is connected with a power supply, batteries and a main control module, the discharging dual-MOS control module is connected with the batteries; the main control module and the load, the current sampling module is connected with the batteries and the main control module; the temperature sampling module is connected with the main control module; it prevents battery discharging and isolates parallel batteries.