Battery electrolyte solution and battery

A battery electrolyte solution, comprising an organic solvent, an additive, and an electrolyte salt, wherein the organic solvent comprises an ethyl group solvent, the additive comprises fluoroethylene carbonate, the electrolyte salt comprises a lithium salt, and the electrolyte solution is in contact with a negative electrode plate;

• and
• percentages of the ethyl group solvent, the fluoroethylene carbonate, and the lithium salt in a total mass of the electrolyte solution are configured as follows:
• 0.4
• -
• N
• 3
• ≤
• A
• +
• B
• 2
• +
• C
• 2
• ≤
• 5.2
• -
• N
• 3
• ,
• wherein N denotes a peeling strength value of the negative electrode plate, in a unit of gf/mm, A denotes a percentage of a mass of the ethyl group solvent in the total mass of the electrolyte solution, B denotes a percentage of a mass of the fluoroethylene carbonate in the total mass of the electrolyte solution, and C denotes a percentage of a mass of the lithium salt in the total mass of the electrolyte solution.