Battery and electronic device

Abstract

The present disclosure provides a battery and an electronic device, which relate to the technical field of batteries and are used for solving the technical problem of poor sealing performance of batteries. The battery includes a shell, a cover assembly and a coiled core assembly located inside the shell; the shell is provided with an opening, and the cover assembly sealingly covers the opening; the cover assembly includes a conductive member, a top cover and a sealing member between the conductive member and the top cover; the conductive member electrically contacts the coiled core assembly; the sealing member is provided with a first through hole, the top cover is provided with a second through hole, and a diameter of the first through hole is smaller than that of the second through hole.

What is claimed is: 
     
         1 . A battery, at least comprising:
 a shell, a cover assembly and a coiled core assembly located inside the shell;   the shell is provided with an opening, and the cover assembly sealingly covers the opening;   the cover assembly comprises a conductive member, a top cover and a sealing member between the conductive member and the top cover; the conductive member electrically contacts the coiled core assembly;   the sealing member is provided with a first through hole, the top cover is provided with a second through hole, and a diameter of the first through hole is smaller than a diameter of the second through hole.   
     
     
         2 . The battery according to  claim 1 , wherein an outer diameter of the sealing member is smaller than an outer diameter of the conductive member. 
     
     
         3 . The battery according to  claim 1 , wherein a surface of the conductive member facing the coiled core assembly has a boss, and the boss passes through the first through hole and the second through hole to electrically contact the coiled core assembly. 
     
     
         4 . The battery according to  claim 2 , wherein a surface of the conductive member facing the coiled core assembly has a boss, and the boss passes through the first through hole and the second through hole to electrically contact the coiled core assembly. 
     
     
         5 . The battery according to  claim 3 , wherein the shell comprises a bottom shell and a side shell connected with the bottom shell;
 the bottom shell and the side shell form an accommodating cavity for accommodating the coiled core assembly, and the opening is communicated with the accommodating cavity; and   the opening is located at an end of the side shell facing away from the bottom shell, and the top cover sealingly covers the opening.   
     
     
         6 . The battery according to  claim 4 , wherein the shell comprises a bottom shell and a side shell connected with the bottom shell;
 the bottom shell and the side shell form an accommodating cavity for accommodating the coiled core assembly, and the opening is communicated with the accommodating cavity; and   the opening is located at an end of the side shell facing away from the bottom shell, and the top cover sealingly covers the opening.   
     
     
         7 . The battery according to  claim 5 , wherein the conductive member comprises a first flat plate portion and a first convex portion connected with the first flat plate portion;
 the first convex portion is provided with a third through hole, and the third through hole is communicated with the accommodating cavity;   wherein the first convex portion is used as the boss.   
     
     
         8 . The battery according to  claim 6 , wherein the conductive member comprises a first flat plate portion and a first convex portion connected with the first flat plate portion;
 the first convex portion is provided with a third through hole, and the third through hole is communicated with the accommodating cavity;   wherein the first convex portion is used as the boss.   
     
     
         9 . The battery according to  claim 7 , wherein a concave portion is formed on a surface of the first convex portion facing away from the coiled core assembly;
 the battery further comprises a blocking member; the blocking member is arranged in the concave portion and used to block the third through hole.   
     
     
         10 . The battery according to  claim 8 , wherein a concave portion is formed on a surface of the first convex portion facing away from the coiled core assembly;
 the battery further comprises a blocking member; the blocking member is arranged in the concave portion and used to block the third through hole.   
     
     
         11 . The battery according to  claim 3 , wherein the conductive member comprises a second flat plate portion and a second convex portion connected with the second flat plate portion;
 wherein the second convex portion is used as the boss.   
     
     
         12 . The battery according to  claim 4 , wherein the conductive member comprises a second flat plate portion and a second convex portion connected with the second flat plate portion;
 wherein the second convex portion is used as the boss.   
     
     
         13 . The battery according to  claim 5 , wherein a difference between the diameter of the first through hole and the diameter of the second through hole is 0.05-0.4 mm. 
     
     
         14 . The battery according to  claim 6 , wherein a difference between the diameter of the first through hole and the diameter of the second through hole is 0.05-0.4 mm. 
     
     
         15 . The battery according to  claim 7 , wherein a difference between the diameter of the first through hole and the diameter of the second through hole is 0.05-0.4 mm. 
     
     
         16 . The battery according to  claim 8 , wherein a difference between the diameter of the first through hole and the diameter of the second through hole is 0.05-0.4 mm. 
     
     
         17 . The battery according to  claim 9 , wherein a difference between the diameter of the first through hole and the diameter of the second through hole is 0.05-0.4 mm. 
     
     
         18 . The battery according to  claim 10 , wherein a difference between the diameter of the first through hole and the diameter of the second through hole is 0.05-0.4 mm. 
     
     
         19 . The battery according to  claim 6 , wherein a difference between the outer diameter of the sealing member and the outer diameter of the conductive member is 0.05-0.4 mm;
 a thickness of the sealing member is 0.05-0.20 mm; and   a difference between the outer diameter of the sealing member and the diameter of the first through hole is greater than or equal to 20 mm.   
     
     
         20 . An electronic device, comprising an electronic device body and the battery according to  claim 1 ;
 wherein the battery provides electric energy for the electronic device body.