A battery pack, a method of heating a battery cell and an electrical combination. The battery pack may include a housing; a battery cell; a heating element operable to provide heat to the battery cell; a temperature sensing device operable to sense a temperature of an interior of the battery pack; a heating switch operable to control whether power is provided to the heating element; and an electronic processor configured to receive a signal from the temperature sensing device, the signal indicating the temperature of the interior of the battery pack, determine that the temperature of the interior of the battery pack is less than a predetermined temperature threshold, and in response to determining that the temperature of the interior of the battery pack is less than the predetermined temperature threshold, close the heating switch to provide power to the heating element.

A battery pack and a method of inhibiting failure of a battery pack. The battery pack may generally include a housing; a battery cell supported in the housing and electrically connectable to an electrical device, power being transferrable between the battery cell and the electrical device; a resistor supported in the housing and operable to receive current from the battery cell; and an electronic processor configured to detect a failure condition of the battery pack, and, in response to detecting the failure condition of the battery pack, cause the battery cell to discharge through the resistor.

An energy storage system, a battery monitoring method, and an energy storage device, to improve precision and stability of the energy storage system. The system includes: a battery module, a temperature sensor, and a battery monitoring unit. The battery module includes at least two battery areas. The temperature sensor is disposed in each battery area. The battery monitoring unit determines, based on a plurality of temperature signals sent by temperature sensors, a first battery area corresponding to an abnormal temperature signal that reaches a first preset temperature threshold. When an adjacent temperature signal of a second battery area that is connected to the first battery area is greater than a second preset temperature threshold, rated power of the battery module is reduced.

An energy storage system, a battery monitoring method, and an energy storage device, to improve precision and stability of the energy storage system. The system includes: a battery module, a temperature sensor, and a battery monitoring unit. The battery module includes at least two battery areas. The temperature sensor is disposed in each battery area. The battery monitoring unit determines, based on a plurality of temperature signals sent by temperature sensors, a first battery area corresponding to an abnormal temperature signal that reaches a first preset temperature threshold. When an adjacent temperature signal of a second battery area that is connected to the first battery area is greater than a second preset temperature threshold, rated power of the battery module is reduced.

A battery module having a cooling structure with a minimized size while providing high cooling efficiency is provided. The battery module includes a front plate and a rear plate that are arranged at a front side and a rear side of a battery pack in which a plurality of battery cells is stacked and a heat-dissipating member that is arranged under the battery pack and absorbs heat generated by the battery pack. Additionally, side plates are arranged at lateral ends of the front plate and the rear plate, arranged to be in contact with respective lateral ends of the heat-dissipating member, and include a cooling channel through which a coolant circulates to cool the battery pack.

A lithium ion battery pack includes a plurality of prismatic lithium polymer cells and one or more graphite heat spreaders. Each spreader has at least two major surfaces and is made of one of a sheet of a compressed mass of exfoliated graphite particles, a graphitized polyimide sheet, or combinations thereof.

A lithium ion battery pack includes a plurality of prismatic lithium polymer cells and one or more graphite heat spreaders. Each spreader has at least two major surfaces and is made of one of a sheet of a compressed mass of exfoliated graphite particles, a graphitized polyimide sheet, or combinations thereof.

A method for controlling a temperature of a battery cell (22, 24) in a battery module (20), the method comprising the steps of: determining an initial temperature of the battery cell (22, 24); measuring a current (I) flowing into or out of the battery cell (22, 24); determining an actual temperature gradient of the battery cell (22, 24) using a thermal battery cell model described by a differential equation, for which input values comprise at least the determined initial temperature and the measured current (I); comparing the determined actual temperature gradient of the battery cell (22, 24) with a pre-defined desired temperature gradient; and automatically adjusting the current (I) flowing into or out of the battery cell (22, 24) according to a result of the comparison.

A battery includes an electrode layer, a counter electrode layer, which is a counter electrode for the electrode layer, and a solid electrolyte layer between the electrode layer and the counter electrode layer. The solid electrolyte layer has a first region containing a first solid electrolyte material and a second region containing a second solid electrolyte material. The first region is positioned within a region where the electrode layer and the counter electrode layer face each other. The second region is positioned on an outer peripheral side of the region where the electrode layer and the counter electrode layer face each other, and is in contact with the first region. The first region includes a first projecting portion that projects outward from a region where the electrode layer and the counter electrode layer face each other, and the second region covers the first projecting portion.

A battery pack, a method of heating a battery cell and an electrical combination. The battery pack may include a housing; a battery cell; a heating element operable to provide heat to the battery cell; a temperature sensing device operable to sense a temperature of an interior of the battery pack; a heating switch operable to control whether power is provided to the heating element; and an electronic processor configured to receive a signal from the temperature sensing device, the signal indicating the temperature of the interior of the battery pack, determine that the temperature of the interior of the battery pack is less than a predetermined temperature threshold, and in response to determining that the temperature of the interior of the battery pack is less than the predetermined temperature threshold, close the heating switch to provide power to the heating element.