Abstract:
A battery device is provided. The battery device includes: a battery module, a protection device, a battery management circuit, and a battery protection circuit. The battery module includes one or more battery cells. The battery management circuit is for managing the protection device and charging and discharging of the battery module. When the battery device is in a charging mode, the battery protection circuit periodically checks and calculates a direct current internal resistance (DCIR) of the battery module, and determines a current operation temperature of the battery module and a temperature range corresponding to the current operation temperature. When the battery protection circuit determines that the DCIR is greater than a predetermined multiple of a first threshold corresponding to the temperature range, the battery protection circuit informs the battery management circuit to cut off the protection device.
Abstract:
A battery powered device providing battery power to a processing device via a positive terminal and a negative terminal and including a first switch, a second switch, a battery unit and a control unit is provided. The first switch is coupled to the positive terminal. The second switch is coupled to the first switch. The battery unit is coupled between the second switch and the negative terminal. The control unit operates in an off mode when the control unit receives the turn-off command. The control unit operates in a power-saving mode when the control unit receives the save command. When the control unit operates in the off mode, the control unit turns off the first and second switches. When the control unit operates in the power-saving mode, the control unit turns off the first switch and turns on the second switch.
Abstract:
An electronic device is provided. The electronic device includes a main system processing a process, a power control unit and a battery module. The power control unit provides operating power to the main system via an external power source when the external power source has been connected, and detects whether the power control unit has received a battery protection signal. The battery module discharges with a self-discharge rate when the battery module has received the protection signal from the power control unit. When the power control unit has not received the battery protection signal, the power control unit provides a charging power to the battery module via the external power source. When the power control unit has received the battery protection signal, the power control unit does not provide the charging power to the battery module, and transmits the protection signal to the battery module.
Abstract:
A battery device includes at least a battery cell, a management chip and a bus. The management chip is coupled to the battery cell for detecting voltage or remaining capacity of the battery cell and managing an operation state of the battery device according to the voltage or the remaining capacity of the battery cell. The bus is coupled to the management chip. The management chip communicates with a host device via the bus. The management chip further determines whether the remaining capacity of the battery cell is not increasing while in a charging state. When the remaining capacity of the battery cell is not increasing while in the charging state, the management chip activates a protection mechanism to make the battery device exit the charging state.
Abstract:
A backup battery includes a battery cell, a storage medium, and a processor. The storage medium is configured to store a computer program. The processor is configured to execute the computer program so as to monitor the operating state of the battery cell. The processor selectively generates one or more output signals according to the operating state of the battery cell.
Abstract:
The battery device includes an energy storage unit, a temperature sensing unit, a storage unit, and a processing unit. The processing unit calculates the internal resistance of the energy storage unit to obtain a first increment corresponding to the internal resistance, and detects the charging voltage that is charging the battery device to obtain a second increment that corresponds to the charging voltage. The processing unit detects the discharging current of the energy storage unit to obtain a third increment corresponding to the discharging current. The processing unit further reads the cycle count from the storage unit to obtain a fourth increment that corresponds to the cycle count, reads the temperature from the temperature sensing unit to obtain a fifth increment that corresponds to the temperature, and determines the swelling rate of the battery device according to the product value of the first, second, third, fourth, and fifth increments.
Abstract:
A power management circuit for a battery cell is provided. The battery cell is coupled to a load through an output terminal. The power management circuit includes a current detection circuit, a loading determination circuit, and a voltage determination circuit. The current detection circuit detects a discharge current of the battery cell when the battery cell is discharged through the load to generate a discharge-current signal. The loading determination circuit determines a loading value of the load according to the discharge-current signal to generate a loading signal. When the battery voltage of the battery cell drops to the cut-off voltage, the power management circuit terminates the discharge of the battery cell through the load.
Abstract:
A battery module is provided. The battery module includes a battery set, a voltage measurement unit, a temperature measurement unit, a matrix calculation unit and a mix algorithm unit. The voltage measurement unit measures a voltage matrix of the battery set. The temperature measurement unit measures a temperature of the battery set. The matrix calculation unit calculates a norm of the voltage matrix. The mix algorithm unit reduces a remaining capacity of the battery module by a first predetermined rate if the change of the norm is larger than a predetermined value and the rise of temperature is larger than a predetermined difference for a predetermined time, and reduces the remaining capacity of the battery module by a second predetermined rate if the change of the norm is larger than the predetermined value and the rise of temperature is not larger than the predetermined difference.
Abstract:
An electronic device is provided. The electronic device includes a main system processing a process, a power control unit and a battery module. The power control unit provides operating power to the main system via an external power source when the external power source has been connected, and detects whether the power control unit has received a battery protection signal. The battery module discharges with a self-discharge rate when the battery module has received the protection signal from the power control unit. When the power control unit has not received the battery protection signal, the power control unit provides a charging power to the battery module via the external power source. When the power control unit has received the battery protection signal, the power control unit does not provide the charging power to the battery module, and transmits the protection signal to the battery module.
Abstract:
A rechargeable battery module includes a battery cell, a load detector, a temperature sensor, a power consumption classifier and a battery charging controller. The power consumption classifier classifies a power consumption of the battery cell based on the load detected by the load detector and the temperature sensed by the temperature sensor. The battery charging controller collects a series of classified results output from the power consumption classifier to control a charging rate of the battery cell accordingly.