Abstract: An intelligent energy storage system, electrically connected to an external power source and a load, including a first energy storage device, a second energy storage device, at least one converter and a controller. The first energy storage device is adapted for storing electrical energy. The second energy storage device is electrically connected to the external power source and the load. The converter is electrically connected between the first and the second energy storage device. The controller is configured to detect at least one electrical property of the first or the second energy storage device to regulate an output voltage and current of the converter. In an energy storage mode, the external power source is used to charge the first energy storage device through the second energy storage device. In an energy transfer mode, the first energy storage device is used as power source to charge the second energy storage device.

Abstract: A system (1) of an electronic lock (3) and an electronic key (2).

Abstract: Disclosed are a steam cooking apparatus (1) and a steam cooking method.

Abstract: Device and method for monitoring remaining power of battery, including: measuring a first open circuit voltage value, a first breakover voltage value and a first breakover current value of a battery to obtain an internal resistance value of the battery; at two different times, measuring and obtaining second and third open circuit voltage values which are compared with a preset comparison table or a relationship curve; calculating a difference between second and third remaining power percentage values to obtain a remaining power percentage value difference; measuring a complex breakover current value of the battery in an interval between the two different times, and calculating a Coulomb power by integrating current with time; dividing the Coulomb power by the remaining power percentage value difference to obtain a current maximum power of the battery; obtaining a remaining power of the battery by an open circuit voltage method or a Coulomb integral method.

Abstract: The invention discloses a charging balance device, system and method for multicell battery pack which can enable N batteries to maintain N?X batteries in a charging circuit during a system operation. The method includes sequentially performing: a constant current charging mode step: implementing a constant current charging mode for charging by a constant current, wherein the switching condition is that a storage capacity of X batteries having a highest storage capacity among the N?X batteries is greater than a storage capacity of the X offline batteries; and after a preset upper limit voltage value is met, changing to a constant voltage charging mode step: implementing a constant voltage charging mode for charging by a constant voltage, wherein the switching condition is that a voltage of X batteries having a highest voltage among the N?X batteries is greater than a voltage of the X offline batteries.

Abstract: A hierarchical wireless power management system using a remote control device to control multiple slave controllers is disclosed. The control module of the remote control device comprises a processing circuit, a wireless signal transmission circuit, and a storage unit. The wireless signal transmission circuit is adapted for transmitting a control signal to a corresponding slave controller. The storage unit is storing settings related to the slave controllers. The remote control device manage the operations of slave controllers with a capability of doing a group controlling under the hierarchical architecture, based upon settings comprising a hierarchical grouping distribution architecture changeably set by a managing user and respective corresponding identification codes of the slave controllers set by the managing user.

Abstract: A hierarchical wireless power management system using a remote control device to control multiple slave controllers is disclosed. The control module of the remote control device comprises a processing circuit, a wireless signal transmission circuit, and a storage unit. The wireless signal transmission circuit is adapted for transmitting a control signal to a corresponding slave controller. The storage unit is storing settings related to the slave controllers. The remote control device manage the operations of slave controllers with a capability of doing a group controlling under the hierarchical architecture, based upon settings comprising a hierarchical grouping distribution architecture changeably set by a managing user and respective corresponding identification codes of the slave controllers set by the managing user.