56results about How to "Stable charging and discharging" patented technology

A battery control unit (400) controls charge and discharge of battery cells (100) on the basis of temperatures measured by a temperature measurement unit (320) and voltages measured by the voltage and current measurement unit (340). In addition, the battery control unit (400) specifies a lowest temperature cell having the lowest temperature and a highest temperature cell having the highest temperature on the basis of the temperatures measured by the temperature measurement unit (320), when a current is greater than 0. In addition, the battery control unit (400) performs balance control for equalizing voltages of all the battery cells (100), on the basis of the voltages measured by the voltage and current measurement unit (340), when a first temperature condition in which a temperature difference ΔT between the highest temperature cell and the lowest temperature cell is equal to or greater than a reference value T1 is not satisfied. On the other hand, when the temperature difference ΔT satisfies the first temperature condition, the battery control unit (400) does not perform the balance control.

In order to provide a molten salt battery that can be charged and discharged stably without requiring, as an essential element, an internal elastic component for achieving contact by pressurization, this molten salt battery is provided with: a molten salt battery body in which positive electrodes and negative electrodes are stacked alternately with separators sandwiched therebetween, the separators containing a molten salt as an electrolyte; and a battery case that is made of a flexible material and that seals and covers the molten salt battery body while exposing only the terminals from the positive electrodes and the negative electrodes. The inside of the battery case is brought into a negative pressure state, and thus, the battery case presses the molten salt battery body in the stacking direction due to the external pressure caused by atmospheric pressure.

The invention relates to the field of components of automobiles, in particular to a vehicular GPS (global positioning system) with power supplied by vibration power generation assemblies. The vehicular GPS comprises a GPS positioning module, the vibration power generation assemblies, an energy storage device, a power supply device, a clamping device and mounting seats. The vibration power generation assemblies are used for generating the power, the energy storage device is used for storing electric energy, the power supply device is used for supplying the power to the GPS positioning module, the mounting seats are used for mounting the vibration power generation assemblies, the energy storage device and the power supply device are mounted on the mounting seats, and the power supply device is electrically connected with the energy storage device and the GPS positioning module; the mounting seats are annularly arranged on the outer sides of clamping pieces, and the vibration power generation assemblies are mounted between the mounting seats and the clamping pieces. The vehicular GPS has the advantages that the vehicular GPS does not need to access circuits of a vehicle, accordingly, damage due to excessive load on the circuits of the vehicle can be prevented, safe operation of the vehicle can be guaranteed, and the vehicular GPS is favorable for saving energy and protecting environments.