Abstract:
A charging method and a battery pack are provided. The charging method for charging multiple cells of the battery pack include steps of: charging the cells of the battery pack using a charging voltage, and detecting a voltage difference ΔVTDV between the cells, wherein a value of the charging voltage is a rated charging voltage value; and obtaining a new charging voltage value smaller than the rated charging voltage value according to the voltage difference ΔVTDV between the cells, and decreasing the charging voltage to the new charging voltage value for charging the cells.
Abstract:
A battery estimation method is provided. The method includes obtaining a potential difference parameter term associated with an estimated absolute state-of-charge for determining a maximum load capable of continuous drawing for a duration of the battery. The potential difference parameter term includes a potential difference characteristic parameter, or the potential difference parameter term includes the potential difference characteristic parameter and a potential difference compensation parameter.
Abstract:
This disclosure provides a state estimation method and a battery pack. The method includes: obtaining aging factor data, predetermined discharge data and predetermined capacity loss changing data; recording measured discharge data of a to-be-measured battery; calculating to obtain discharge voltage difference data according to the predetermined discharge data and the measured discharge data; determining a specific interval Sa according to the discharge voltage difference data, and obtaining a voltage difference statistical value ΔV2,Stats in the specific interval Sa; calculating an estimation capacity loss ΔQD of the to-be-measured battery according to the aging factor data and the voltage difference statistical value ΔV2,Stats; and determining whether the to-be-measured battery is abnormal or not according to the predetermined capacity loss changing data and the estimation capacity loss ΔQD.
Abstract:
A battery estimation method is provided. The method includes obtaining a potential difference parameter term associated with an estimated absolute state-of-charge for determining a maximum load capable of continuous drawing for a duration of the battery. The potential difference parameter term includes a potential difference characteristic parameter, or the potential difference parameter term includes the potential difference characteristic parameter and a potential difference compensation parameter.
Abstract:
A method of determining an aging level of a battery includes utilizing a first charging device to charge a first battery; utilizing a second obtaining device to obtain a plurality of first steady open-circuit voltages (OCVs) of the first battery when a charging state of the first battery respectively reaches a plurality of first stop-charge conditions; utilizing a second charging device to charge a second battery; utilizing a third obtaining device to obtain a stop-charge parameter of the second battery and a second steady OCV of the second battery corresponding to the stop-charge parameter of the second battery; and utilizing an aging level determining device to determine an aging level of the second battery relative to the first battery according to the second steady OCV of the second battery and one of the first steady OCVs of the first battery corresponding to the stop-charge parameter of the second battery.
Abstract:
In the charging process of a power device of a portable device, a control unit or firmware of the power device dynamically acquires the status of the charging current and the charging voltage, and by incrementing the charging current, the power device correctly obtains maximum charging current affordable by a charger without overly drawing the current from the charger that causes overly low charging voltage. Such current-adaptive charging process optimizes the charging process.
Abstract:
Disclosed is a battery balancing circuit for balancing the voltages of a reference battery module and a detachable battery apparatus, which has a load channel, a charging-discharging channel, a MCU and a charging-discharging control circuit. The reference battery module and detachable battery apparatus are connected in parallel. The load channel is connected to the reference battery module. The charging-discharging channel is disconnected from the reference battery module. The load and charging-discharging channels are connected to the detachable battery apparatus respectively through a first and a second switches. When the voltage of the detachable battery apparatus is higher or lower than a threshold value, the MCU controls the first and second switches, such that the detachable battery apparatus is connected to the charging-discharging control circuit through the charging-discharging channel and disconnected from the load channel. Then the MCU charges or discharges the detachable battery apparatus through the charging-discharging control circuit.
Abstract:
A voltage detection circuit comprises a plurality of even-number voltage detection nodes, at least one odd-number voltage detection node, a voltage differential generation circuit, a selection circuit and a computing circuit. The selection circuit is for controlling the coupling relationship between the voltage differential generation circuit and the even and odd-number voltage detection nodes, so that the voltage differential generation circuit generates a voltage differential between the nodes. The computing circuit knows a voltage of a first even-number voltage detection node being as a reference voltage or obtains the voltage of the first even-number voltage detection node on the basis of the reference voltage, and respectively obtains a voltage of the nodes on the basis of the voltage differential between two adjacent nodes and the obtained voltage of a first even-number voltage detection node.
Abstract:
Disclosed is a battery balancing circuit for balancing the voltages of a reference battery module and a detachable battery apparatus, which has a load channel, a charging-discharging channel, a MCU and a charging-discharging control circuit. The reference battery module and detachable battery apparatus are connected in parallel. The load channel is connected to the reference battery module. The charging-discharging channel is disconnected from the reference battery module. The load and charging-discharging channels are connected to the detachable battery apparatus respectively through a first and a second switches. When the voltage of the detachable battery apparatus is higher or lower than a threshold value, the MCU controls the first and second switches, such that the detachable battery apparatus is connected to the charging-discharging control circuit through the charging-discharging channel and disconnected from the load channel. Then the MCU charges or discharges the detachable battery apparatus through the charging-discharging control circuit.
Abstract:
An electronic apparatus with electrostatic discharge protection includes: a conducting casing and a circuit board. The circuit board has a power ground node and a conditional conducting path, and is set inside the conducting casing. The conditional conducting path further includes: a conducting element and an electrostatic discharging component. One end of the conducting element is electrically connected to the conducting casing, and the electrostatic discharging component is electrically connected between another end of the conducting element and the power ground node. When the voltage variation between the two ends of the electrostatic discharging element reaches a preset condition, the electrostatic discharging component functions as a short circuit; otherwise, the electrostatic discharging element is equivalent to a high impedance element. The power ground node electrically connects to an electrode of a battery for using it as a vessel of receiving electrostatic charges.