Abstract: The present disclosure discloses a protective film assembly, applied to an electrode assembly of an energy storage device, and including an insulation sheet for wrapping the electrode assembly and arranged between a housing of the energy storage device and the electrode assembly. The first side surface covering region includes a first covering sub-region and a second covering sub-region which can overlap each other; the second side surface covering region includes a third covering sub-region and a fourth covering sub-region which can overlap each other; the maximum sizes of the first covering sub-region and the second covering sub-region in a thickness direction and height direction of the electrode assembly are equal, so that the first covering sub-region and the second covering sub-region have a high matching degree and a large bonding area. The present disclosure further discloses an energy storage device.

Abstract: Provided are an electrolyte, an energy storage device, an energy storage module, and an electric apparatus. The electrolyte for the energy storage device satisfies: 23.1??15×c2+28.53×c+0.64×?+16.47×????25.3, where c is a value of a concentration of lithium salt in the electrolyte, ranging from 0.6 to 1 mol/L; ? is a value of a viscosity of the electrolyte at 25° C., ranging from 1.6 to 3.0 mPa·s; ? is a value of a density of the electrolyte, ranging from 1.1 to 1.3 g/cm3; and ? is a value of a conductivity of the electrolyte, ranging from 8 to 12 ms/cm.

Abstract: An energy storage device and a power consuming apparatus are provided in the disclosure. In the energy storage device, a top cover defines an opening, a response member covers the opening, a lower plastic member includes a grid structure, the grid structure defines vent holes, and the vent holes are in communication with the opening. A current collecting member includes a first connecting portion and a second connecting portion. The first connecting portion is connected to a terminal, and the second connecting portion is connected to an electrode assembly. Welding protrusions are provided on a surface of the second connecting portion, and the second connecting portion at least partially shelters the grid structure. The grid structure defines a dented avoidance space, and the welding protrusions are accommodated in the avoidance space.

Abstract: An energy storage device and a power consuming apparatus are provided in the disclosure. In the energy storage device, a top cover defines an opening, a response member covers the opening, a lower plastic member includes a grid structure, the grid structure defines vent holes, and the vent holes are in communication with the opening. A current collecting member includes a first connecting portion and a second connecting portion. The first connecting portion is connected to a terminal, and the second connecting portion is connected to an electrode assembly. Welding protrusions are provided on a surface of the second connecting portion, and the second connecting portion at least partially shelters the grid structure. The grid structure defines a dented avoidance space, and the welding protrusions are accommodated in the avoidance space.

Abstract: The present disclosure provides an end cover assembly, an energy storage apparatus, and an electric device. The end cover assembly includes a top cover, an explosion-proof sheet, and a shielding member. The top cover has a first surface and a second surface facing away from the first surface. The top cover further has an explosion-proof hole through the first surface and the second surface. The explosion-proof sheet is configured to seal the explosion-proof hole and is connected to the top cover. The shielding member is located at a side of the explosion-proof sheet close to the second surface and is connected to the top cover. The top cover, the explosion-proof sheet, and the shielding member form a chamber. The shielding member has a first air vent in communication with the chamber.

Abstract: A lower plastic assembly, an end cover assembly, an energy-storage apparatus, and an electronic device are provided in the disclosure. The lower plastic assembly includes a first lower plastic member. The first lower plastic member comprises a first-lower-plastic-member body. The first-lower-plastic-member body has a first top surface and a first bottom surface opposite the first top surface, and further comprises a first part, a second part, and a first deformation portion. The first deformation portion is located between the first part and the second part in a length direction of the first-lower-plastic-member body. A ratio of a depth h1 of the first deformation portion to a height h2 of the first part ranges from 0.05 to 0.42 in a thickness direction of the first-lower-plastic-member body. A ratio of the depth h1 of the first deformation portion to a height h3 of the second part ranges from 0.16 to 0.6.

Abstract: A power consuming device includes an energy storage device. The energy storage device includes a supporter, a pole, a stimulus-response member, a connector, and an electrode assembly. The supporter has a first side and a second side opposite to the first side. The supporter defines a mounting hole and a vent hole. The mounting hole is spaced apart from the vent hole in a length direction of the supporter. The connector includes a first connecting part and a second connecting part. The first connecting part is connected to the second connecting part. The first connecting part is opposite to the second connecting part when the first connecting part is folded relative to the second connecting part. The first connecting part is connected to the pole. The second connecting part extends toward the vent hole and partially shields the vent hole in a thickness direction of the supporter.

Abstract: The present disclosure provides an external cladding film, an energy storage device and electrical equipment. The energy storage device includes an external cladding film and a housing. The external cladding film includes two side film sections each having a first cut groove and a second cut groove. The first cut groove and the second cut groove both penetrate through the side film section. A bottom surface of the first cut groove and a bottom surface of the second cut groove are both spaced from inner edges of the side film sections. Each side film section has a first oblique crease and a second oblique crease. A first free end of the first oblique crease intersects with a side surface of the first cut groove. A distance between the first free end and the bottom surface of the first cut groove is greater than 0.

Abstract: The present disclosure discloses a protective film assembly, applied to an electrode assembly of an energy storage device, and including an insulation sheet for wrapping the electrode assembly and arranged between a housing of the energy storage device and the electrode assembly. The first side surface covering region includes a first covering sub-region and a second covering sub-region which can overlap each other; the second side surface covering region includes a third covering sub-region and a fourth covering sub-region which can overlap each other; the maximum sizes of the first covering sub-region and the second covering sub-region in a thickness direction and height direction of the electrode assembly are equal, so that the first covering sub-region and the second covering sub-region have a high matching degree and a large bonding area. The present disclosure further discloses an energy storage device.

Abstract: The present disclosure discloses a lower plastic member, a top cover assembly, an energy storage device, and electrical equipment, which can solve the problem of damage to an electrode assembly caused by the fact that a lower plastic member collides with the electrode assembly device and other structures arranged on the battery cell, and prolong the service life of the energy storage device and electrical equipment.

Abstract: A lower plastic assembly, an energy storage apparatus, and an electric device are provided in the disclosure. The lower plastic assembly includes a first lower plastic member. The first lower plastic member includes a first-lower-plastic-member body. The first-lower-plastic-member body further has a first upper surface and a first lower surface. The first upper surface is opposite to the first lower surface. The first-lower-plastic-member body defines a first liquid-injection through-hole. The first liquid-injection through-hole extends through the first-lower-plastic-member body and is located at one end of the first-lower-plastic-member body. A cutout is defined at one side of the first liquid-injection through-hole and is in direct communication with the first liquid-injection through-hole, and the cutout extends through the first upper surface and the first lower surface.

Abstract: A cell includes an electrolyte, a positive electrode sheet, a separator, and a negative electrode sheet. The electrolyte includes a cyclic organic solvent and a linear organic solvent. The electrolyte has a conductivity ? satisfying: ?=k?×?2+kviscosity×?0?kconductivity, where ? represents a mass ratio of the cyclic organic solvent to the linear organic solvent in the electrolyte, k? is a constant for ?, ?3.1?k???2.5, kviscosity represents a constant for a viscosity of the electrolyte, 4.6?kviscosity??5.8, kconductivity represents a correction coefficient for the conductivity of the electrolyte, 0.16?kconductivity?0.39, and ?0 represents a viscosity of the electrolyte at 25° C. The positive electrode sheet, the separator, and the negative electrode sheet are all at least partially immersed in the electrolyte. The separator is located between the negative and positive electrode sheets.

Abstract: A top patch, an energy-storage apparatus, and an electricity-consumption device are provided. The top patch is configured to be attached to the energy-storage apparatus and defines a first pole through-hole and a first elongated hole in a length direction of the top patch, the first elongated hole includes two side walls arranged opposite to each other in a width direction of the top patch, and each of the two side walls is provided with an extension bump; the first elongated hole on one side of the extension bump forms a first explosion-proof valve through-hole, and the first elongated hole on the other side of the extension bump forms a second pole through-hole, and the first pole through-hole is located between the second pole through-hole and the first explosion-proof valve through-hole, and the connecting through-hole communicates with the second pole through-hole and the first explosion-proof valve through-hole.

Abstract: An end cover assembly, an energy-storage apparatus, and an electricity-consumption device are provided. The end cover assembly includes an end cover, an insulating member, a positive pole, a negative pole, a first connecting member, and a second connecting member. The insulating member and the end cover are stacked in a first direction. The insulating member includes a first separate member, a second separate member, a third separate member, and a fourth separate member. The third separate member, the first separate member, and the second separate member cooperatively define a first accommodating space. The fourth separate member, the first separate member, and the second separate member cooperatively define a second accommodating space. The positive pole penetrates through the third separate member and the end cover. The negative pole penetrates through the fourth separate member and the end cover.

Abstract: An energy storage device and an electric device are provided in the disclosure. The energy storage device includes a jelly roll assembly and a connector. The jelly roll assembly includes at least one jelly roll. Each of the at least one jelly roll has multiple tabs arranged in a thickness direction of the tabs after winding an electrode sheet. The jelly roll has a first side surface and a first end surface. The multiple tabs are bent at roots of the multiple tabs and attached to the first end surface. The multiple tabs have a connection surface away from the first end surface. The connector is disposed on the connection surface and connected with the multiple tabs. The jelly roll assembly further includes a first insulation patch. The first insulation patch adheres to and covers a surface of the connector away from the first end surface, and extends to the first side surface.

Abstract: The present disclosure discloses an energy storage device and electrical appliance. The energy storage device includes a housing, an electrode assembly, a top cover, a lower plastic member, a connecting plate and an insulating adhesive sheet, wherein the housing is provided with an opening; the electrode assembly is accommodated in the housing; the top cover covers the opening and is provided with a liquid injection hole; the lower plastic member is arranged on a side of the top cover close to the electrode assembly, and has an liquid injection hole, and the through hole is in communication with the liquid injection hole; the connecting plate is arranged on a side of the lower plastic member towards the electrode assembly; the insulating adhesive sheet is attached to a side of the connecting plate towards the electrode assembly and covers the connecting plate and the through hole.