A method and an apparatus for regenerating batteries containing fluid electrolytes are revealed. The method includes the steps of: removing a case of a battery to expose a core of the battery, immersing the core in a functional electrolyte suitable for removing solid electrolyte interface (SEI) layer formed on surface of active materials, measuring characteristic parameters of the functional electrolyte during the period the core is immersed, adjusting concentration and electric conductivity of the functional electrolyte which the core is immersed therein by adding other suitable functional electrolytes according to the measured characteristic parameters until both the concentration and the electric conductivity are within a normal range of batteries or capacity of the core reaches the normal value of the battery. Thus the core is regenerated and re-packaged to form a regenerated battery.

In a metal negative cell in which the negative electrode mainly comprises a metal such as aluminum, magnesium, zinc, lithium, etc., self discharge readily occurs when the negative electrode and an electrolytic solution are in contact, and the problem of large capacity loss of the cell readily occurs. The metal negative cell is provided with a metal negative cell in which the self-discharge amount is reduced, and the capacity loss of the cell is reduced during use or storage, whereby the metal negative cell varies the cell output according to demand.

The present invention relates to a secondary battery. The secondary battery according to the present invention comprises an electrode assembly in which a positive electrode, a separator, and a negative electrode are alternately combined to be stacked; and a pouch that accommodates the electrode assembly therein. The separator comprises a first separator disposed between the positive electrode and the negative electrode and having a through-hole penetrated in a direction that faces the positive electrode and the negative electrode, and a second separator covering the through-hole of the first separator and having an end connected to the pouch. When an internal gas is generated due to overcharging, the pouch is expanded to allow the second separator to move to open the through-hole of the first separator to cause the positive electrode and the negative electrode to contact each other via the through-hole.

Battery arrangements and methods of operating a battery arrangement. The battery arrangement includes at least two cells each including at least two electrodes at least partially immersed in an electrolyte, and a regeneration device for regenerating the electrolyte. The regeneration device is configured so that a volume of electrolyte in the first cell or the second cell can be exchanged with a regenerated electrolyte or a depleted electrolyte depending on an operating condition of the battery arrangement.

A back-up rechargeable battery supply system comprises communication linkages and a configuration of switches to allow battery back-up power to be provided by cells within a battery unit that are in a ready mode and to by-pass batteries that are in a non-ready mode, or maintenance mode. The unique configuration of switches and communication methods enables the back-up power to be provided very quickly to avoid disruptions in power to a load. Each battery cell has a charge and discharge switch and a power switch. Both the power switch and one of the charge or discharge switches must be closed to allow the battery cell to charge or discharge respectively. The by-pass switch may be controlled by the battery system control or by the cell controller and when closed, the cell may be bypassed from discharging or charging. The battery cells may be electrochemical cells such as metal air batteries.

An electronic device including a protected component, a flexible positive temperature coefficient (PTC) device including a flexible sheet of PTC material coupled to a surface of the protected component, the flexible PTC device electrically connected to the protected component and adapted to arrest or mitigate electrical current flowing through the protected component upon the occurrence of an overcurrent condition, and a battery management system coupled to the flexible PTC device, the battery management system configured to measure a voltage across the flexible PTC device and to arrest or mitigate electrical current in the electronic device if the measured voltage across the flexible PTC device exceeds a predetermined threshold.

A vent cap assembly for recombining water for a battery includes a cylindrical base having an upper portion and a lower portion. The lower portion configured to be inserted into a vent port. A cap encloses the cylindrical base. A catalyst component is received in the base configured to hydronate hydrogen and oxygen to water.

New systems, methods and media for simultaneous energy and data transfer are provided. In some aspects of the invention, an energy and data receiver is provided, which may be used to receive data and energy simultaneously, in a unified manner. Energy and information transfer media, which may be included within such a receiver unit, are also provided.

New electrochemical battery recharging, refurbishment and replacement techniques are also provided. In some aspects of the invention, small, fungible battery elements with external contacts may be delivered to a tank comprising contacts. The cells may be delivered to the tank bridging contacts within the tank, powering an appliance. Density differentials, maneuvering protocols and variable contacts between the elements may aid in placing them in selected circuit orders, and in removing them.

A method and an apparatus for regenerating batteries containing fluid electrolytes are revealed. The method includes the steps of: removing a case of a battery to expose a core of the battery, immersing the core in a functional electrolyte suitable for removing solid electrolyte interface (SEI) layer formed on surface of active materials, measuring characteristic parameters of the functional electrolyte during the period the core is immersed, adjusting concentration and electric conductivity of the functional electrolyte which the core is immersed therein by adding other suitable functional electrolytes according to the measured characteristic parameters until both the concentration and the electric conductivity are within a normal range of batteries or capacity of the core reaches the normal value of the battery. Thus the core is regenerated and re-packaged to form a regenerated battery.

Provided herein are systems and methods for using an ultrasonic vibration generator to apply vibrational energy to a metal negative electrode of a rechargeable battery. In some examples, the application of vibrational energy to the metal negative electrode occurs during a charging event.