A system and method are described permitting a sophisticated control of a battery composed of a multiplicity of three-terminal electrochemical cells. Each cell has first and second terminals, connected with respective electrodes, one of which is a positive terminal and one of which is a negative terminal. Each cell has a third terminal connected with a grid electrode. A battery is composed of N cells. For each of the N cells, there is provided a respective capacitor switchably coupled to the second and third terminals thereof. A controller is connected through a switching matrix to the capacitors. In operation, the controller is connected sequentially to each capacitor among the multiplicity of capacitors, during which time the capacitor is momentarily uncoupled from its respective cell. When the controller is connected to one of the capacitors, it measures the voltage thereupon. The controller can then charge up or discharge the capacitor to drive it to a desired voltage level. Thereafter, the capacitor is disconnected from the controller and is coupled again to its respective cell.

Supplemental lithium can be used to stabilize lithium ion batteries with lithium rich metal oxides as the positive electrode active material. Dramatic improvements in the specific capacity at long cycling have been obtained. The supplemental lithium can be provided with the negative electrode, or alternatively as a sacrificial material that is subsequently driven into the negative electrode active material. The supplemental lithium can be provided to the negative electrode active material prior to assembly of the battery using electrochemical deposition. The positive electrode active materials can comprise a layered-layered structure comprising manganese as well as nickel and/or cobalt.

The present invention discloses a multi-functional battery box, belonging to the field of power supply devices; a multi-functional battery box, comprising: a case, having an accommodating cavity; a printed circuit board, located in the accommodating cavity and permanently connected with the case; a power source, located in the accommodating cavity and in contact with the printed circuit board; an electro-acoustic transducer, permanently arranged on the printed circuit board and electrically connected with the printed circuit board; a spring piece, arranged on the case and in contact with the printed circuit board; a change-over switch, flexibly connected with the printed circuit board; the present invention has two switching modes that can be flexibly switched, making the battery box easier and more flexible to use, reducing the loss to the switch and prolonging the life of the battery box.

Described embodiments include a system and a method. A system includes a controllable electrochemical cell configured to output pulsed electric power. The controllable cell includes an electrolyte, and a first working electrode configured to transfer electrons to or from the electrolyte. The system includes a second working electrode configured to transfer electrons to or from the electrolyte. The system includes a gating electrode spaced-apart from the second working electrode and configured if biased relative to the second working electrode to modify an electric charge, field, or potential in the space between the electrolyte and the second working electrode. The system includes a control circuit configured to establish a nonlinear voltage-current property of the controllable cell in response to an externally originated trigger signal.

A system and method are described permitting a sophisticated control of a battery composed of a multiplicity of three-terminal electrochemical cells. Each cell has first and second terminals, connected with respective electrodes, one of which is a positive terminal and one of which is a negative terminal. Each cell has a third terminal connected with a grid electrode. A battery is composed of N cells. For each of the N cells, there is provided a respective capacitor switchably coupled to the second and third terminals thereof. A controller is connected through a switching matrix to the capacitors. In operation, the controller is connected sequentially to each capacitor among the multiplicity of capacitors, during which time the capacitor is momentarily uncoupled from its respective cell. When the controller is connected to one of the capacitors, it measures the voltage thereupon. The controller can then charge up or discharge the capacitor to drive it to a desired voltage level. Thereafter, the capacitor is disconnected from the controller and is coupled again to its respective cell.

The present invention relates to a battery. The battery includes: a detecting apparatus, located inside the battery and on an anode or cathode end of the battery, and configured to detect an electric potential inside the battery; and a conducting wire, electrically connected to the detecting apparatus and insulated from the anode and cathode of the battery, and configured to export a value of the electric potential measured by the detecting apparatus. The battery according to embodiments of the present invention is provided with a built-in detecting apparatus, which is led out together with the anode and cathode of the battery by using the conducting wire electrically connected to the detecting apparatus. This design achieves accurate and reliable measurement of a potential at a single electrode.

A shared electrode battery includes multiple electrodes of one type (e.g., two or more cathodes) that share an electrode of another type (e.g., a shared anode). The multiple electrodes of the same type (e.g., the multiple cathodes) can have different characteristics, such as different chemistries, particle sizes and distributions, capacities, and so forth that are designed to provide particular features such as high energy density, high power density, high cycle life, fast charge, safety, and so forth. Multiple cathode-anode pairings of one of the multiple electrodes of the same type with the shared electrode are possible. Switching hardware is operable to select one of the multiple pairings at any given time, allowing the battery to provide power using the cathode having the desired characteristics at that given time. A single battery is thus able to provide these multiple different features.

A method of pre-doping an anode of an energy storage device can include immersing the anode and a dopant source in an electrolyte, and coupling a substantially constant current between the anode and the dopant source. A method of pre-doping an anode of an energy storage device can include immersing the anode and a dopant source in an electrolyte, and coupling a substantially constant voltage across the anode and the dopant source. An energy storage device can include an anode having a lithium ion pre-doping level of about 60% to about 90%.

A primary lithium battery having an electrode body that is arranged with a sheet-like cathode and a sheet-like anode opposing each other via a separator and sealed inside a jacket body together with a non-aqueous organic electrolyte including the cathode being made by applying or compressively bonding to a surface of a sheet-like current collector cathode material including cathode active material allowing occlusion of lithium ions, and the anode being made by applying anode material including carbon active material allowing occlusion and separation of lithium ions on a one main side face side of a sheet-like current collector having formed holes penetrating from a front to a back, and an anode active material made of a lithium metal or a lithium alloy being affixed to another face side of the current collector.

Embodiments include methods and products for evaluating microbatteries. The microbattery includes a cathode layer, an anode layer physically separated from the cathode layer, and an electrolyte layer in contact with the anode and the cathode. The microbattery also includes at least one auxiliary electrode in physical contact with the electrolyte layer, the auxiliary electrode containing at least one metal coating and at least one non-conductive film, wherein the at least one metal coating is physically separated from the cathode and the anode.