Lithium ion battery and electric device using the same

By using fluoroamide and fluorolinear carbonate solvents to form the electrolyte in lithium-ion batteries, combined with mannitol sulfate carbonate and lithium salt additives, along with carbon nanotube conductive networks and lanthanum doping, the problem of synergistic optimization between high and low temperature cycling performance and thermal shock safety in lithium-ion batteries was solved, thereby improving the stability and safety of the batteries.

CN121964786BActive Publication Date: 2026-06-12SHENZHEN HIGHPOWER TECH CO LTD
2 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHENZHEN HIGHPOWER TECH CO LTD
Filing Date
2026-04-01
Publication Date
2026-06-12

AI Technical Summary

⚠Technical Problem

Existing lithium-ion batteries struggle to achieve synergistic optimization between high and low temperature cycling performance and thermal shock safety. Furthermore, the lack of systematic and quantitative component synergistic modification in current technologies leads to inherent contradictions among performance indicators.

⚗Method used

The electrolyte is composed of fluoroamide solvents and fluorolinear carbonate solvents, combined with mannitol sulfate carbonate and lithium salt additives to form a stable interfacial film. It is then combined with carbon nanotubes to construct a conductive and thermally conductive network, and lanthanum is doped into the positive electrode. The synergistic effect is achieved by precisely controlling the proportion of each component.

🎯Benefits of technology

This technology achieves simultaneous improvement in low-temperature cycling performance, high-temperature cycling stability, and thermal shock safety of lithium-ion batteries, forming a stable electrolyte system and interface protection, thereby enhancing the overall stability and safety of the battery.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

This invention provides a lithium-ion battery and an electrical device, comprising a positive electrode, a negative electrode, and an electrolyte. The negative electrode includes a negative electrode active layer comprising a negative electrode active material. The positive electrode includes a positive electrode active layer comprising carbon nanotubes and a positive electrode active material, wherein the positive electrode active material is doped with lanthanum. The electrolyte comprises a solvent, an additive, and an electrolyte salt. The first solvent comprises a fluoroamide solvent, the second solvent comprises a fluorolinear carbonate solvent, the first additive comprises mannitol sulfate carbonate, and the second additive comprises a lithium salt additive. The battery satisfies the following conditions: 1.23≤(A+C+D)*10000 / X≤21; 0.05≤(C+D)*100 / (B+W)≤3.16; 3.23≤(C+H) / B≤97.30; 5≤A≤30, 5≤B≤30, 0.5≤C≤4, 0.3≤D≤3, 0.5≤H≤6, 100≤X≤800, 1≤W≤30. The lithium-ion battery provided by this invention improves its thermal shock safety and high and low temperature cycle performance through the above-mentioned multi-component synergy and the relationships satisfied by the multi-components.
Need to check novelty before this filing date? Find Prior Art