A vehicle electricity storage system includes a control device including: a calculation unit configured to calculate an internal resistance value of the battery based on the voltage value and the current value; a derivation unit configured to derive an estimated internal resistance value, which is an estimated value of the current internal resistance of the battery, based on the calculated internal resistance value calculated and the current voltage value; and a setting unit configured to set a charging electricity upper limit value, which is an upper limit value of charging electricity for charging the battery, based on the derived estimated internal resistance value, the current voltage value, and a current value at present. The derivation unit is configured to derive a greater value as the estimated internal resistance value, as a difference between an upper limit voltage value of the battery and the current voltage value becomes smaller.

A smart ring charging system comprises a charging source integrated into an object, the object configured to be held by a user wearing a smart ring. The smart ring may include a ring-shaped housing and a power source disposed within or at the ring-shaped housing and configured to receive energy from the charging source while the user is wearing the smart ring and holding the object. A controller may be disposed within or at the ring-shaped housing, or at the object with the charger and configured to estimate a charging rate at which the power source receives the energy from the charging source. The system may further include one or more indicators configured to indicate the charging rate.

The invention discloses a smart glove, which relates to a smart glove that can be used indoors and outdoors. It includes a glove body. The glove body includes a wrist, a palm, and a finger. On the back of the wrist, there are a switch button, a charging interface, and a control. The control box contains a rechargeable lithium battery and a controller, and the charging interface is electrically connected to the lithium battery in the control box; an LED display is installed on the back of the palm, and the inside of the LED display is electrically connected to the driver of the LED display; The back finger part can wrap all fingers or part of the fingers to protect the skin; on the one hand, the present invention can serve as a warning when the user is walking or riding, improving travel safety, and on the other hand. Play a role in display and publicity.

A battery monitoring system continuously calculates the estimated runtime of a bank of batteries in a battery backup system during both a period of operation when the load current is supplied by a commercial source of AC power and during a period of operation when the commercial source of AC power is not present and the load current is supplied by the bank. The estimated runtime may be displayed to an operator and used to alert the operator if the cutoff voltage of a battery in the bank is at or near its cutoff voltage. The system may open a circuit breaker to avoid catastrophic damage before the cutoff voltage is reached.

A charging method for battery includes: in an n-th charging process, charging a first battery to a charge cut-off voltage U.sub.n in a first charging manner; after the n-th charging process is completed, leaving the first battery standing, and obtaining an open-circuit voltage OCV.sub.n of the first battery at a standing time of t.sub.i; in an m-th charging process, charging the first battery to the charge cut-off voltage U.sub.n in the first charging manner; after the m-th charging process is completed, leaving the first battery standing, and obtaining an open-circuit voltage OCV.sub.m of the first battery at the standing time of t.sub.i; and under the condition of OCV.sub.n>OCV.sub.m, in an (m+1)-th charging process and subsequent charging processes, charging the first battery to the charge cut-off voltage U.sub.n in the first charging manner and then continuing to charge the first battery to a first voltage U.sub.m+1 in a second charging manner.

A battery charging method based on lithium plating detection includes: acquiring a battery charging strategy table after receiving a battery charging instruction; charging a battery according to a charging current in the battery charging strategy table, and performing at least one charging lithium plating detection on the battery during the charging of the battery, to obtain a first lithium plating detection result; continuing the charging of the battery according to the charging current and the charging lithium plating detection of the battery when no lithium plating phenomenon occurs, and stopping the charging lithium plating detection when the lithium plating phenomenon occurs or the charging of the battery is completed; and updating the charging current according to a preset first current reduction strategy when the lithium plating phenomenon occurs, and continuing the charging of the battery according to the updated charging current until the charging is completed.

A power supply device is provided with a disconnection means (AND element) for forcibly disconnecting a battery module from a series connection regardless of a gate signal. The power supply device forcibly disconnects partial battery modules from the series connection by the disconnection means (AND element) during powering by a power supply output, thereby performing control so that the accumulated discharge current amounts thereof per unit time become smaller than those of the other battery modules.

There is provided a battery system including: a controller; a main switch controlled by the controller to supply or cut off a voltage of a battery to a load; and a semiconductor pre-charger module including a semiconductor switch connected in parallel with the main switch and configured to supply or cut off the voltage of the battery to the load according to a control signal output from the controller, and a semiconductor switch driver configured to receive the control signal from the controller and output a single pulse signal for driving the semiconductor switch to turn on and off the semiconductor switch. Here, the semiconductor switch driver of the semiconductor pre-charger module includes an isolation element configured to electrically isolate the controller and the battery voltage, and the semiconductor switch of the semiconductor pre-charger module is a MOS-controlled thyristor (MCT).

Embodiments of the present invention provide a method for powering an electronic device with a battery or other backup power supply when an external power source is removed from the electronic device. The method determines if the ambient temperature of an electronic device is below a threshold and if the ambient temperature is below the threshold adjusting a minimum state of charge of the battery to prolong the life of the battery.

A charge control system includes a lithium battery configured to provide lithium battery power to a set of electrical loads, a user signaling device, and control circuitry coupled with the lithium battery and the user signaling device. The control circuitry is operative to: (A) detect availability of charge from an external charger, (B) in response to detection of the availability of charge from the external charger and prior to controlling the external charger to adjust the amount of charge stored by the lithium battery, perform a set of pre-charging assessment operations, and (C) based on the set of pre-charging assessment operations, provide a user notification via the user signaling device, the user notification indicating whether the lithium battery is properly setup for charge adjustment. When the user signaling device generates the user notification, the user is informed that the utility vehicle is properly connected to the external charger.