An apparatus for inspecting disconnection of an electrode tab of a battery cell includes a measurement part which measures impedance values and impedance angles of an inspection target battery cell over frequency; a calculation part which calculates real part resistance values of impedance of the inspection target battery cell over frequency from the impedance values and the impedance angles; and a determination part which determines whether an electrode tab of the battery cell is disconnected by comparing real part resistance values in a real part resistance value range in a resonance frequency range of good battery cells having the same type as the inspection target battery cell with the real part resistance values of the impedance of the inspection target battery cell in the same frequency range as the resonance frequency range.

A method and system for monitoring a non-rechargeable battery of an IoT device are described. Voltage values of the non-rechargeable battery when a load is applied to the non-rechargeable battery are determined over a first interval of time. Based at least in part on these voltage values a determination of whether a voltage of the non-rechargeable battery has decreased for more than a predetermined threshold is performed. In response to determining based at least in part on the voltage values that the voltage of the non-rechargeable battery has decreased for more than the predetermined threshold, a prediction of an end of life parameter value for the non-rechargeable battery is performed, and the end of life parameter value is transmitted to an electronic device of an administrator of the IoT device.

A method and system for monitoring a non-rechargeable battery of an IoT device are described. Voltage values of the non-rechargeable battery when a load is applied to the non-rechargeable battery are determined over a first interval of time. Based at least in part on these voltage values a determination of whether a voltage of the non-rechargeable battery has decreased for more than a predetermined threshold is performed. In response to determining based at least in part on the voltage values that the voltage of the non-rechargeable battery has decreased for more than the predetermined threshold, a prediction of an end of life parameter value for the non-rechargeable battery is performed, and the end of life parameter value is transmitted to an electronic device of an administrator of the IoT device.

Disclosed is a method for identifying a battery type and/or a battery user. Measuring circuitry may be used to collect battery parameters that may be analyzed by control circuitry to create an adaptive charge profile that is applied to a battery by charging circuitry. Battery parameters may be recorded in a battery use signature. Logic may be used to process a battery use signature and identify a single user across multiple battery operated devices and/or discriminate between multiple users of a device. In some cases, battery use signature may be used to identify battery information including the make, model, and lot from which the battery was manufactured.

Disclosed is a method for identifying a battery type and/or a battery user. Measuring circuitry may be used to collect battery parameters that may be analyzed by control circuitry to create an adaptive charge profile that is applied to a battery by charging circuitry. Battery parameters may be recorded in a battery use signature. Logic may be used to process a battery use signature and identify a single user across multiple battery operated devices and/or discriminate between multiple users of a device. In some cases, battery use signature may be used to identify battery information including the make, model, and lot from which the battery was manufactured.

The present invention discloses a testing method and a testing system for a safe operating window of a lithium-ion battery in a squeezed state. The testing system includes a mechanical loading device, a heating device, a lithium-ion battery tester and a measuring device. By comparing the influence of a combined use of two or more of mechanical abuse with two different fixed variables, thermal abuse, and electrical abuse on critical conditions of thermal runaway of the lithium-ion battery, the influence of the different forms of abuse on the critical conditions of thermal runaway of the lithium-ion battery can be compared qualitatively and quantitatively, and these data can also be used to determine the safe operating windows of the lithium-ion battery under different abuse conditions.

The present invention discloses a testing method and a testing system for a safe operating window of a lithium-ion battery in a squeezed state. The testing system includes a mechanical loading device, a heating device, a lithium-ion battery tester and a measuring device. By comparing the influence of a combined use of two or more of mechanical abuse with two different fixed variables, thermal abuse, and electrical abuse on critical conditions of thermal runaway of the lithium-ion battery, the influence of the different forms of abuse on the critical conditions of thermal runaway of the lithium-ion battery can be compared qualitatively and quantitatively, and these data can also be used to determine the safe operating windows of the lithium-ion battery under different abuse conditions.

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.

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.

Estimating a charge state for a flat-voltage profile battery can be accomplished using impedance measurements. For example, an impedance measurement can be used to form a fuel gauge for a lithium-air (Li-Air) battery. As the impedance of a Li-Air battery increases during discharge, it corresponds to a state of charge (i.e., a charge state). The impedance can be used to create charge state data to use with a fuel gauge.