1848results about "Nickel accumulators" patented technology

Microscopic batteries, integratable or integrated with microelectromechanical systems or other microscopic circuits, including a MEMS microcircuit, and methods of microfabrication of such microscopic batteries are disclosed, among which comprise closed system microscopic batteries for internal storage of electricity using interval reactants only, which comprise microscopic electrodes, electrolyte and reservoir for the electrolyte.

A power source comprised of a first battery pack (e.g., a non-metal-air battery pack) and a second battery pack (e.g., a metal-air battery pack) is provided, wherein the second battery pack is only used as required by the state-of-charge (SOC) of the first battery pack or as a result of the user selecting an extended range mode of operation. Minimizing use of the second battery pack prevents it from undergoing unnecessary, and potentially lifetime limiting, charge cycles. The second battery pack may be used to charge the first battery pack or used in combination with the first battery pack to supply operational power to the electric vehicle.

The invention discloses a large-capacity nickel-metal hydride battery, comprising a pole plate group, wherein a diaphragm is arranged between the adjacent positive plate and negative plate, three pole ears with C-like distribution are arranged on the pole plates, and the positive plate and the negative plate are oppositely arranged at intervals; one side of the pole plate group is coated with a positive current collector, the outer side of the positive current collector is coated with a positive flow deflector, the positive flow deflector is connected with the positive current collector through a low-melting-point welding layer, a positive pole rod is arranged on the positive flow deflector, the outer side of the positive flow deflector is coated with a positive guard plate, and a positive cooling system is arranged between the positive guard plate and the positive flow deflector; and the negative side structure is the same as the positive side structure. The pole plate adopts the pole ears with C-like distribution, the positive and negative current collectors are connected with the corresponding pole ears, the flow deflector and the current collector are welded together through a low-melting-point silver alloy, the resistivity of a conductor can be reduced, and thus the charge and discharge rate can be increased to a maximum extent; and the positive cooling system and the negative cooling system can cool the temperature rise generated by high-rate charging and discharging of the batteries.

A battery having a current collector constructed of carbon foam. The carbon foam includes a network of pores into which a chemically active material is disposed to create either a positive or negative plate for the battery. The carbon foam resists corrosion and exhibits a large amount of surface area. The invention includes a method for making the disclosed carbon foam current collector used in the battery.

The present invention provides a solid-state sodium-based secondary cell (or rechargeable battery). While the secondary cell can include any suitable component, in some cases, the secondary cell comprises a solid sodium metal negative electrode that is disposed in a non-aqueous negative electrolyte solution that includes an ionic liquid. Additionally, the cell comprises a positive electrode that is disposed in a positive electrolyte solution. In order to separate the negative electrode and the negative electrolyte solution from the positive electrolyte solution, the cell includes a sodium ion conductive electrolyte membrane. Because the cell's negative electrode is in a solid state as the cell functions, the cell may operate at room temperature. Additionally, where the negative electrolyte solution contains the ionic liquid, the ionic liquid may impede dendrite formation on the surface of the negative electrode as the cell is recharged and sodium ions are reduced onto the negative electrode.

A battery device includes a battery cell constituted by a secondary cell, a case that houses the battery cell, and a battery-side positive electrode terminal and a battery-side negative electrode terminal electrically provided in the case and connected to the battery cell. The battery device further includes a temperature detecting unit that detects the temperature of the battery cell, a temperature control unit that heats and / or cools the battery cell when an electric current is supplied thereto, and a current control unit that divides, according to the temperature detected by the temperature detecting unit, an externally-supplied charging current supplied from the outside via the battery-side positive electrode terminal and the battery-side negative electrode terminal into a first current supplied to the battery cell and a second current supplied to the temperature control unit.

An object is to provide a semiconductor device including an RFID which can transmit / receive individual information without a change of a battery accompanied by deterioration over time of the battery as a drive power source, and to which driving power can be supplied to keep a favorable transmission / reception state of the individual information even when an external electromagnetic wave is not sufficient. The semiconductor device includes a signal processing circuit, a first antenna circuit and a second antenna circuit operationally connected to the signal processing circuit, and a battery operationally connected to the signal processing circuit, in which the first antenna circuit transmits / receives a signal for transmitting data stored in the signal processing circuit; the second antenna circuit receives a signal for charging the battery; and a signal received by the first antenna circuit and a signal received by the second antenna circuit have different wavelengths.

A battery thermal system for use in a vehicle having a power plant, an air conditioning system and a battery pack, and a method of operation, is disclosed. The battery thermal system may include a refrigerant-to-coolant heat exchanger that selectively receives a refrigerant from the vehicle air conditioning system; a battery radiator located adjacent to a cooling fan; a valve that receives a liquid coolant from the battery pack and selectively redirects the liquid coolant to the refrigerant-to-coolant heat exchanger and the battery radiator; and an electric pump for pumping the liquid coolant through the battery pack, the valve, the refrigerant-to-coolant heat exchanger and the battery radiator. The battery thermal system may also include a battery coolant heater for selectively heating the coolant that flows into the battery pack.