公开(公告)号：US20230401343A1

公开(公告)日：2023-12-14

申请号：US18203291

申请日：2023-05-30

Applicant: NANJING TECH UNIVERSITY

Inventor： ZHIRONG WANG ,  TENGFEI HE ,  YANGYAN ZHENG

IPC: G06F30/10 ,  G06F30/27

CPC classification number: G06F30/10 ,  G06F30/27 ,  G06F2111/06

Abstract: The present invention discloses a three-dimensional modeling method for thermal runaway of a lithium-ion battery under different state of charge (SOC) conditions based on a differential scanning calorimeter (DSC) experiment, comprising S1: obtaining an active material of a battery, and performing a DSC experiment to obtain a heat flow curve; S2: dividing the heat flow curve of the battery into a plurality of reaction peaks to obtain a reaction enthalpy of each peak of the battery; S3: analyzing the heat flow curve by utilizing a Kissinger equation to obtain activation energy and a pre-exponential factor; S4: fitting the heat flow curve of the material of the battery by using a genetic algorithm to obtain a reaction order of the active material of the lithium-ion battery; S5: establishing a thermal runaway model of the battery, and comparing simulation experimental results to verify the feasibility of the model; and S6: changing the SOC of the lithium-ion battery, and studying the influence of different SOC on the thermal runaway of the lithium-ion battery. The thermal runaway model established based on the DSC experiment according to the present invention can actually reproduce the thermal runaway reaction of the lithium-ion battery during the thermal runaway process and improve the accuracy of the model.

公开(公告)号：US20230265261A1

公开(公告)日：2023-08-24

申请号：US18111589

申请日：2023-02-19

Applicant: NANJING TECH UNIVERSITY

Inventor： ZHIRONG WANG ,  HAOBO ZHOU ,  JUNLING WANG ,  YANGYAN ZHENG

IPC: C08K3/22 ,  C08K7/00 ,  C08L79/08

CPC classification number: C08K3/22 ,  C08K7/00 ,  C08L79/085 ,  B82Y40/00

Abstract: The present application discloses a nanocomposite flame retardant. The nanocomposite flame retardant includes 9.7-9.8 wt % of MXene nanosheets, 72.7-76.5 wt % of bimetallic hydroxide and 13.8-17.5 wt % of cuprous oxide particles. The present disclosure further discloses flame-retardant bismaleimide resin added with the nanocomposite flame retardant and a preparation method of the flame-retardant bismaleimide resin. According to the present disclosure, the flame retardant is prepared from magnesium and aluminum elements, so the production cost of the flame retardant is reduced; and meanwhile, the particle size of the cuprous oxide particles is reduced, the specific surface area of cuprous oxide is increased, the catalytic efficiency of the cuprous oxide per unit mass can be improved, and then the flame-retardant and toxicity-reducing effects of products are improved.