Abstract: A nonaqueous electrolyte and a lithium ion battery containing same. The nonaqueous electrolyte contains substances as shown in the formulas below, wherein G1 and G2 are independently selected as a bond, oxygen, sulfur, nitrogen, silicon or phosphorus, at least one of G1 and G2 is oxygen, R1 is an alkylene group, a halogenated alkylene group, or a silyl alkylene group, R2 is an alkyl group, a fluoroalkyl group, an alkenyl group, a fluoroalkenyl group, an alkynyl group, a fluoroalkynyl group or a cyano group, R3 is hydrogen, a halogen, an alkyl group, a haloalkyl group, a cyano group, a siloxane group, an alkoxy group or a haloalkoxy group, X, Y, and Z are independently selected as carbon, oxygen, sulfur, nitrogen or phosphorus, at least one of X, Y, and Z is oxygen, sulfur, nitrogen or phosphorus, and n is an integer between 2 and 6.

Abstract: This application discloses a placement location obtaining method, a model training method, and a related device. The method includes: obtaining first size information of an unoccupied area in an accommodation space and second size information of a first object; generating M candidate placement locations based on the first size information and N pieces of second size information, where one candidate placement location indicates one placement location of one determined first object in the unoccupied area; generating a first score value of each candidate placement location based on the first size information by using a first machine learning model; and selecting a first placement location from the M candidate placement locations based on the first score value. This avoids excessive dependence on experience of a technical person, and improves an automation level and efficiency of placing/loading an object in the warehousing and/or logistics field.

Abstract: Disclosed is a secondary battery, comprising a positive electrode, a negative electrode, and an electrolyte, wherein the electrolyte comprises a lithium salt, an organic solvent, and an additive, wherein the additive comprises a fluorinated compound that accounts for 5-20% of the total mass of the electrolyte, and a polynitrile compound that accounts for 0.2-4% of the total mass of the electrolyte and a sulfate compound that accounts for 0.3-5% of the total mass of the electrolyte; and the negative electrode has a compacted density of not less than 1.55 g/cm3. When the secondary battery is used, the battery can still have both a high temperature characteristic and a low temperature charging ability under the conditions of a higher negative electrode density, thereby having market application prospects, and overcoming the problem of the performance of existing secondary batteries deteriorating when the compacted density of a negative electrode is improved.