Tsinghua University

Ming-Gao Ouyang

Liang-Fei Xu

Jian-Qiu Li

Xiang-Ming He

Xu-Ning Feng

Lan-Guang Lu

Xue-Bing Han

Zun-Yan Hu

Geng Yang

Yue-Jiu Zheng

Dong-Xu Guo

Li Wang

Hang Li

Bing-kun Cai

Hui-Ze Liu

Po Hong

Jia-yi Hu

Si-Qi Zheng

Dong-Sheng Ren

Disclosed are an electric wheel assembly applicable for a parallelly mounted dual-tire wheel, an axle, and a vehicle. The electric wheel assembly includes a wheel and support axle assembly, an internal-rotor hub motor, a planetary gear reducer and a brake system. A planetary carrier is connected to a hub. The hub is connected to a spoke and a rim. The wheel support axle passes through a rotor sleeve and is provided with a hub bearing to support the hub and a whole wheel. A sun gear disposed at an end of the rotor sleeve of the internal-rotor hub motor is a power input of the planetary gear speed reducer, and the planetary carrier is a power output. A planetary gear of the planetary gear reducer is a tower-shaped gear and realizes a relatively high transmission ratio under a condition that an axial length is relatively small.

Electric wheel assembly applicable for parallelly mounted dual-tire wheel, axle, and vehicle

A method for diagnosing degradation of a fuel cell stack, including: S, qualitatively determining a degradation type of the fuel cell stack according to a voltage-current curve of the fuel cell stack; S, quantitatively measuring parameter values of each of individual cells of the fuel cell stack according to the degradation type, and quantitatively determining a degradation degree of each of the individual cells according to the parameter values; S, determining a uniformity degradation degree among the individual cells of the fuel cell stack according to a non-uniformity degree of a voltage distribution of the individual cells. By qualitatively determining the degradation type of the fuel cell stack, the degradation condition of the entire fuel cell stack may be obtained.

Method for diagnosing degradation of fuel cell stack, method for multi-point analysis of fuel cell, and method for estimating performance of fuel cell membrane electrode

A multi-environment integrative thermal management method for a fuel cell vehicle is provided. The method can ensure the accuracy and the stability of the control for a temperature of a fuel cell system of the fuel cell vehicle in a complicated and changeable environment, decrease the energy consumption of the entire vehicle, and increase the economical efficiency of the entire vehicle.

Multi-environment integrative thermal management method for fuel cell vehicle

A method for evaluating a consistency of a battery pack is provided, including: obtaining an initial/real rated capacity and an initial/real dischargeable electric quantity of each cell in a battery pack after a charge and discharge cycle of the battery pack; generating a first/second data diagram for every cells based upon the initial/real rated capacity and the initial/real dischargeable electric quantity; obtaining a first/second information of key cells in the first/second data diagram, defining an initial/real cell distribution region according to the first/second information by processing the first/second data diagram, and calculating a first/second area of the initial/real cell distribution region; and evaluating the consistency of the battery pack according to the first/second area. A strategy for balancing the battery pack is further provided.

Method for evaluating consistency of battery pack and strategy for balancing battery pack

A method for generating a data diagram is provided, including: obtaining a first data of each cell in a battery pack during a charge and discharge cycle of the battery pack; calculating a rated capacity and a dischargeable electric quantity of each cell based upon the data obtained; and generating a first data diagram for every cell of the battery pack based upon the rated capacity and the dischargeable electric quantity of each cell. A method for managing the battery pack based on the data diagram is further provided.

Method for generating data diagram and method for managing battery pack

A method for forecasting thermal runaway safety of a full battery by a computer is provided and including receiving a self heat generation onset temperature Tof a first power battery, wherein the first power battery is a half cell; calculating a maximum temperature Tof thermal runaway of the first power battery based on a thermal runaway reaction kinetic model stored in the computer, calculating a maximum temperature rise &#x394;T by making difference between the maximum temperature Tand the self heat generation onset temperature T; and judging the thermal runaway safety of the first power battery by the relationship between the self heat generation onset temperature Tand the maximum temperature rise &#x394;T.

Method and device for forecasting thermal runaway safety of power battery, and a method for making power battery

An integrated DC/DC converter includes a first DC/DC converter, a second DC/DC converter, a first voltage sensor, a second voltage sensor, a first current sensor, a second current sensor, a third current sensor, and a controller. The first DC/DC converter has an input end and an output end. The input end of the first DC/DC converter is to be electrically connected to an output end of an electrochemical energy storage apparatus. The output end of the first DC/DC converter is to be electrically connected to an input end of an electrical load. The second DC/DC converter connects the first DC/DC converter in parallel.

Integrated DC/DC converter, electrochemical energy storage system, and methods for analyzing electrochemical impedance spectroscopy and working state of electrochemical energy storage apparatus

Growing community of inventors

Beijing, China

Ming-Gao Ouyang