Abstract: A battery, a battery module, a battery pack and an electric device are provided. In some embodiments, the battery includes: a positive electrode, a separator and a negative electrode, wherein the separator includes a base film, a first coating provided on a first surface of the base film, and a second coating provided on a second surface of the base film, the first coating includes a first polar substance, and hydrogen bonds are formed between the first polar substance and a positive binder; hydrogen bonds are formed between the second polar substance and a negative binder and/or a negative active component. In the present disclosure, binding forces between the separator and the positive electrode and the negative electrode may be increased by the hydrogen bonds, thus reducing a cycle expansion rate of a bare cell and improving a high-rate discharge performance and a cycle performance of the battery.

Abstract: A battery includes a plurality of arranged battery cells; and a pressure regulating apparatus, including a body portion and a regulating valve, where the body portion is arranged between adjacent battery cells, a gas pipeline being formed in the body portion, and the regulating valve is arranged in the gas pipeline and configured to regulate pressure in the gas pipeline so as to adjust a gap between adjacent battery cells.

Abstract: A battery, a battery module, a battery pack and an electric device are provided. In some embodiments, the battery includes: a positive electrode, a separator and a negative electrode, wherein the separator includes a base film, a first coating provided on a first surface of the base film, and a second coating provided on a second surface of the base film, the first coating includes a first polar substance, and hydrogen bonds are formed between the first polar substance and a positive binder; hydrogen bonds are formed between the second polar substance and a negative binder and/or a negative active component. In the present disclosure, binding forces between the separator and the positive electrode and the negative electrode may be increased by the hydrogen bonds, thus reducing a cycle expansion rate of a bare cell and improving a high-rate discharge performance and a cycle performance of the battery.

Abstract: A method for controlling an electrical exhaust gas turbocharger of an internal combustion engine includes a measure (a), in accordance with which a load requirement placed on the internal combustion engine is monitored, and a measure (b), in accordance with which a boost mode of the electrical exhaust gas turbocharger is activated if the load requirement monitored in measure (a) exceeds a predetermined threshold value.