The disclosure provides state-of-charge (SOC) and state-of-health (SOH) estimation methods of a battery pack. The SOC estimation method of the battery pack includes the following steps. First, a current resting time, a current battery temperature, and a current measured open circuit voltage corresponding to a current initial power-on time of the battery pack are obtained. Next, an SOC value corresponding to the current initial power-on time is determined according to the obtained current resting time, current battery temperature, current measured open circuit voltage, and a relational expression between an open circuit voltage, a resting time, a battery temperature, and an SOC value at predetermined different battery temperatures, so that the battery pack can be characterized according to the obtained SOC value.

The present disclosure is directed to charging a battery pack by determining a battery pack identification (ID) value from a battery pack identification (ID) component of the battery pack, applying a sinusoidal AC excitation signal to a set of battery cells of the battery pack, calculating an impedance value of the battery pack based on the sinusoidal AC excitation signal, comparing the impedance value of the battery pack to a set of reference impedance values associated with the battery pack ID value, and selecting a charging scheme based on a comparison of the impedance value of the battery pack to the set of reference impedance values associated with the battery pack ID value. The battery pack is charged using the charging scheme.

A chassis structure of an apparatus contains a battery. Charger circuitry is operable to provide charge to the battery. Discharge circuitry is operable to receive charge from the battery. Switch circuitry is coupled between the battery and each of the charger circuitry, the discharge circuitry, and a load. A connector at an exterior surface of the chassis couples the apparatus to a power supply. The switch circuitry is coupled to the connector via the charger circuitry. A first control activable at the exterior surface of the chassis structure is operable to generate, in response to being activated, a first control signal to request a first switch state wherein the battery is electrically coupled to the discharge circuitry. A controller circuit coupled to receive the first control signal from the first control and, based on the first control signal, to operate the switch circuitry to provide the first switch state.

The present invention relates to systems and methods for identifying, with an onboard Battery Identity Module (BIM), an advanced rechargeable battery sub-pack that is module or cell for the purpose of collecting data and information about the full battery life cycle including the origin of materials to manufacturing, service life, second life, and recycling. The granular data collected down to the cell level over the battery life cycle is collectively named as Battery Life Intelligence (BLI) and recorded under the BIM in an immutable cloud-based data lake.

A control device for an electric vehicle, in which a drive battery pack is mounted, the drive battery pack being capable of charging the plurality of battery cells using an external power supply, and the drive battery pack having a battery case for storing a plurality of battery cells in a stacked state, the control device including: a storage device that has stored a program; and a processor connected to the storage device, wherein the processor executes the program stored in the storage device to: acquire an indicator value regarding deterioration of the plurality of battery cells; and perform processing for prohibiting charging of the plurality of battery cells from the external power supply when the indicator value has reached a first threshold value.

Various embodiments of the teachings herein include a method for classifying a battery cell. The method may include: measuring load cycles of the cell using a coulometry apparatus; repeating the measurement until an abort criterion is met; determining values for a discharge capacity of the battery cell using a first and a second calculation rule; wherein a calibration is input differently into the first and the second rule; carrying out an optimization method to determine a calibration of the current measurement with the greatest match between the first and the second discharge capacity; determining an aging criterion for the battery cell based on the result of the measurement; and sorting the battery cell into one of several classification ranges based on the aging criterion.

A power tool system includes a tool body for implementing the function of the power tool and a battery pack detachably connectable to the tool body. The battery pack also includes a housing and a cell assembly disposed in the housing and used for storing or releasing electrical energy. The battery pack also includes a battery management module electrically connected to a detection module and the cell assembly and configured to dynamically adjust a charge parameter of the battery pack or a discharge parameter of the battery pack according to the current cycle count of the battery pack.

A mobile device for avoiding accidental shutdown includes a battery cell, a controller, and a jack element. The controller defines a first delay time and a second delay time. The first delay time is relative to the ODCP (Over Discharge Current Protection) of the battery cell. The second delay time is relative to the OVP (Over Voltage Protection) of the battery cell. When a plug of a power supply device is unplugged from the jack element, the controller detects an SOH (State of Health) of the battery cell. The controller compares the SOH with a first threshold ratio and a second threshold ratio. Then, the controller extends the first delay time and the second delay time according to a first multiplier, a second multiplier, or a third multiplier.

An electronic device includes a first battery, a second battery, a power management integrated circuit, a memory, and a processor. The memory is configured to store information on a first full-charging voltage value of the first battery and a second full-charging voltage value of the second battery. The processor is configured to detect whether the electronic device is connected to an external electronic device for supplying power to the first battery or the second battery. When the first full-charging voltage value is higher than the second full-charging voltage value the processor is configured to, electrically connect the first battery to the power management integrated circuit and electrically disconnect the second battery from the power management integrated circuit. The processor is further configured to charge the first battery electrically connected to the power management integrated circuit based on power obtained from the external electronic device.

This decision method: determines whether measurement data pertaining to a plurality of power storage elements included in a system is periodically stored in a storage device; when the measurement data is determined as stored, determines, on the basis of the acquired measurement data, whether each of the plurality of power storage elements reaches the end of life within a period corresponding to a standard use period at a prescribed temperature; and decides that a power storage element determined as reaching the end of life is required to be replaced.