Aspects relate to a connector for charging an electric vehicle and a method for its use. An exemplary connector includes at least a direct current conductor configured to conduct a direct current, at least an alternating current conductor, configured to conduct an alternating current, at least a computing device wherein the computer is configured to receive a measurement datum of a battery module from a communicatively connected sensor, determine an operating condition of the charging circuit; identify an error element as a function of the operating condition, and transmit the identification of the error element to a data storage system.

Aspects relate to a connector for charging an electric vehicle and a method for its use. An exemplary connector includes at least a direct current conductor configured to conduct a direct current, at least an alternating current conductor, configured to conduct an alternating current, at least a computing device wherein the computer is configured to receive a measurement datum of a battery module from a communicatively connected sensor, determine an operating condition of the charging circuit; identify an error element as a function of the operating condition, and transmit the identification of the error element to a data storage system.

A battery charger and method is disclosed for detecting when a battery has a low state of health while simultaneously charging or maintaining the battery. A battery charger includes a processor; a non-transitory memory device; a power management device to receive an input power and to output a charging current; a pair of electrical conductors to electrically couple with a battery, and a display electrically coupled to the processor. The display being configured to indicate a bad battery indicator when the battery has a low state of health and whether the battery is good to start.

A battery charger and method is disclosed for detecting when a battery has a low state of health while simultaneously charging or maintaining the battery. A battery charger includes a processor; a non-transitory memory device; a power management device to receive an input power and to output a charging current; a pair of electrical conductors to electrically couple with a battery, and a display electrically coupled to the processor. The display being configured to indicate a bad battery indicator when the battery has a low state of health and whether the battery is good to start.

A battery pack monitoring device includes a battery pack, at least one first wireless communicator, at least one second wireless communicator, and a control device. The battery pack is installed in a vehicle and includes a battery. The at least one first wireless communicator is disposed inside the battery pack and can perform wireless communication. The at least one second wireless communicator is disposed in the vehicle outside the battery pack and can perform wireless communication. The control device includes one or more processors, and one or more memories. The one or more processors are configured to execute a process including trying the wireless communication between the first wireless communicator and the second wireless communicator, and estimating the presence and/or absence of a damage to the battery pack based on an establishment state of the wireless communication between the first wireless communicator and the second wireless communicator.

A voltage measurement device is a voltage measurement device including a plurality of voltage detection circuits which measure cell voltages of a plurality of cells connected in series. Each of the plurality of voltage detection circuits includes: a communication end information holding circuit which holds communication end information specifying, as at least one communication end position, at least one of the plurality of voltage detection circuits; and a communication control circuit which controls transfer for sending a communication command received from a preceding voltage detection circuit located at a preceding stage to a next voltage detection circuit located at a next stage, according to the communication end information.

A voltage measurement device is a voltage measurement device including a plurality of voltage detection circuits which measure cell voltages of a plurality of cells connected in series. Each of the plurality of voltage detection circuits includes: a communication end information holding circuit which holds communication end information specifying, as at least one communication end position, at least one of the plurality of voltage detection circuits; and a communication control circuit which controls transfer for sending a communication command received from a preceding voltage detection circuit located at a preceding stage to a next voltage detection circuit located at a next stage, according to the communication end information.

In a state monitoring of a storage battery, accuracy of estimation of the remaining service life of the storage battery can be improved by monitoring the state of the storage battery and distinguishing an initial failure and an accidental failure from degradation over time. A storage battery state monitoring system which monitors a state of each of a plurality of storage batteries connected in series and constituting an assembled battery provided in an apparatus, the system includes a control/power supply device which detects a current in each of the storage batteries, and a slave device which measures an operation time, a temperature, a voltage, and an internal resistance of each of the storage batteries, the internal resistance being measured at at least two or more kinds of frequencies, and in a state that is not normal in each of the storage batteries is determined by distinguishing an initial failure or an accidental failure from degradation over time based on at least one or more values of the temperature, the voltage, and the internal resistance measured by the slave device and a direct current resistance of each of the storage batteries obtained from a ratio between a change in a current value detected by the control/power supply device and a change in a voltage value measured by the slave device during discharging of each of the storage batteries.

A battery pack includes a battery, a first temperature sensor configured to provide a first temperature value associated with a temperature of the battery, a heat source disposed proximate to the battery and configured to heat the battery, a second temperature sensor configured to provide a second temperature value associated with a temperature of the heat source, and a control board coupled to the first temperature sensor and the second temperature sensor, wherein the control board is configured to receive the first temperature value and the second temperature value. The control board is configured to compare the first temperature value and the second temperature value to determine a temperature gradient between the battery and the heat source and transmit an alert if the temperature gradient exceeds a first temperature gradient threshold.

A battery pack includes a battery, a first temperature sensor configured to provide a first temperature value associated with a temperature of the battery, a heat source disposed proximate to the battery and configured to heat the battery, a second temperature sensor configured to provide a second temperature value associated with a temperature of the heat source, and a control board coupled to the first temperature sensor and the second temperature sensor, wherein the control board is configured to receive the first temperature value and the second temperature value. The control board is configured to compare the first temperature value and the second temperature value to determine a temperature gradient between the battery and the heat source and transmit an alert if the temperature gradient exceeds a first temperature gradient threshold.