Abstract: A method and a device for balancing a battery state are provided, in which the method includes executing a battery capacity balancing of a plurality of battery packs when voltage information of the plurality of battery packs is open circuit voltages or when balanced voltages of the plurality of battery packs are on the same curve fragment, such that balanced capacities of the plurality of battery packs can be calculated via aging voltage compensation parameters and/or aging capacity compensation parameters of the plurality of battery packs, and a capacity adjustment can be performed according to the balanced capacities. Therefore, the battery capacity balancing can be performed by obtaining voltages in different states, and the battery capacity of each battery pack can be accurately adjusted to achieve balance among the battery packs by taking the aging parameters of the battery packs into consideration.

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 ?VTDV 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 ?VTDV between the cells, and decreasing the charging voltage to the new charging voltage value for charging the cells.

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 ?V2,Stats in the specific interval Sa; calculating an estimation capacity loss ?QD of the to-be-measured battery according to the aging factor data and the voltage difference statistical value ?V2,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 ?QD.

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 for establishing visual images of models of battery status transforms data of one or more characteristic parameters collected in a period of time into multiple images composed by normalized pixels corresponding to the data. The multiple images are superimposed with one another to form variant image(s) with variant areas and further moving trends of the variant areas. The visualization of data and superimposition of the visualized images facilitates correlation and variation analysis among characteristic parameters of the battery module. The present invention transform data analysis to image analysis, and therefore, the present invention facilitates following analysis and model training, which can adapt to environmental changes, and indicate battery status and battery events efficiently and accurately.

Abstract: A method includes recording a branch current and a terminal voltage of each of two parallel connected cells of a battery pack during the battery pack being switched from a charging or discharging state through a rest state to a balance state, to obtain an internal resistance of each cell, and an open-circuit voltage (OCV) and a state of charge (SOC) of the battery pack in the balance state, to obtain an OCV and a SOC of each cell just before the battery pack is switched to the rest state; and obtaining an aging differential index according to the SOC of each cell just before the battery pack is switched to the rest state, the branch current of each cell just after the battery pack is switched to the rest state, and a rated capacity of the battery pack, to determine a relative aging level of the two cells.

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: A charging and discharging system of a vehicle storage device utilizes a buffer device adapted for voltage adjustment toward a charging voltage of a charging device on the vehicle, and also for adjusting the charging current, in such a way that the charging voltage and current from the charging device may be reduced in advance for charging the storage device. With the charging and discharging system, storage device using lithium ion battery cell may be adapted to various vehicle system.

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: In a two-way direct balance circuit for series cells, a control unit activates a pulse generator to transmit high frequency switch control signals, and a flyback converter is utilized to perform electromagnetic transition between the cells that rapidly conveys power from the cells with high relative state of capacity (RSOC) to the flyback converter and to the cells with low RSOC. The direct energy transfer between cells provides fast and highly efficient performance.

Abstract: An insulation detection circuit suitable for detecting an insulation status between a high voltage power and a low voltage power of a vehicle is disclosed. The circuit includes a first energy storage unit, a second energy storage unit, a constant current unit, and a detection unit. The first energy storage unit is coupled to the high voltage power. The second energy storage unit is coupled between the first energy storage unit and the low voltage power. The constant current unit is coupled between the first energy storage unit and the second energy storage unit. The detection unit is coupled to the second energy storage unit for detecting a current change of the second energy storage unit. When the detection unit detects that current flowing through the second energy storage unit is smaller than a predetermined value, a detection signal representing that the insulation status is abnormal is outputted.

Abstract: A battery module comprises a base, a set of battery cells and a plurality of heat dissipating units. The base comprises an input opening, an output opening and a plurality of fluid channels. A set of battery cells is disposed on the base and comprises a plurality of battery cells. A channel is formed between neighboring battery cells and the heat dissipating units are respectively disposed in the channels. Each heat dissipating unit has a main body having an expandable fluid channel, a fluid inlet and a fluid outlet. Each expandable fluid channel is communicated with the respective fluid inlet and the respective fluid outlet, and the expandable fluid channels are communicated with the fluid channels of the base. When a coolant flows into the expandable fluid channel, at least one side wall expands with the pressure of the coolant and contacts the surface of the battery cell.

Abstract: A management system of wireless power transmission comprises a plurality of first power modules, wherein the first power modules form a first cluster. Each of the first power modules comprises a first power unit, an energy information unit, a first wireless transceiver unit and a first control unit. The energy information unit is coupled to the first power unit. The first wireless transceiver unit is used for sending or receiving the first power transmission information and electrical energy. The first control unit is coupled to the energy information unit and the first wireless transceiver unit, and controls the first wireless transceiver unit to send or receive power transmission information and electrical energy. The first wireless transceiver units send the first power transmission information to each other. The first power modules determine the priority according to a control signal.

Abstract: An insulation detection circuit suitable for detecting an insulation status between a high voltage power and a low voltage power of a vehicle is disclosed. The circuit includes a first energy storage unit, a second energy storage unit, a constant current unit, and a detection unit. The first energy storage unit is coupled to the high voltage power. The second energy storage unit is coupled between the first energy storage unit and the low voltage power. The constant current unit is coupled between the first energy storage unit and the second energy storage unit. The detection unit is coupled to the second energy storage unit for detecting a current change of the second energy storage unit. When the detection unit detects that current flowing through the second energy storage unit is smaller than a predetermined value, a detection signal representing that the insulation status is abnormal is outputted.

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.

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: A battery charging method is provided for extending life of batteries. The method includes providing an appropriate charge-off voltage with respect to variation in both of a remaining capacity and an idle time of the battery. Further, the charge-off voltage may vary according to the remaining capacity and the idle time of the battery, so as to increase charging efficiency of the battery. Additionally, the present invention also provides adjusting a charge-off current to a value according to the variation in an actual capacity of the battery.

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.

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.

Abstract: Disclosed is a battery casing manufacturing method which comprises: providing a casing film; providing a casing body; aligning the casing film and the casing body; and connecting the casing film and the casing body by using a welding process. The welding process transmits energy to the predetermined joint area of the casing film and/or the casing body in a non-physical contact way to make them connected.