Abstract: A method for diagnosing degradation of a fuel cell stack, including: S10, qualitatively determining a degradation type of the fuel cell stack according to a voltage-current curve of the fuel cell stack; S20, 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; S30, 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: Disclosed are a gas sampling system and a gas sampling method for a fuel cell, a current density distribution estimation method for the fuel cell, a calibration method and a calibration device for an internal state model for the fuel cell, and a computer equipment. The gas sampling method for a fuel cell includes arranging a plurality of sampling pipelines and a plurality of sampling points, the plurality of sampling points being arranged at a cathode inlet, an anode outlet, an anode inlet, a cathode outlet, and in an anode flow channel, and a cathode flow channel of the fuel cell, the sampling points arranged in the anode flow channel and the cathode flow channel being located in central regions of cross sections of the flow channels, and the sampling pipelines being connected to the plurality of sampling points, respectively, and configured to guide gas inside the fuel cell out.

Abstract: A method for diagnosing degradation of a fuel cell stack, including: S10, qualitatively determining a degradation type of the fuel cell stack according to a voltage-current curve of the fuel cell stack; S20, 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; S30, 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.

Abstract: The present disclosure relates to a fuel cell stack, a bipolar plate, and a gas diffusion layer. The fuel cell stack includes a plurality of first graphite bipolar plates, a plurality of second graphite bipolar plates, and a plurality of reacting units arranged in sequence. The first graphite bipolar plate includes an air flow channel, a hydrogen gas flow channel, and a cooling flow channel. At least one second graphite bipolar plate is disposed between two adjacent first graphite bipolar plates. The second graphite bipolar plate includes an air flow channel and a hydrogen gas flow channel. A reacting unit is disposed between any two adjacent bipolar plates.

Abstract: The present disclosure relates to a fuel cell bipolar plate including a substrate. A surface of the substrate defines a first flow channel and a second flow channel adjacent to the first flow channel. A rib is formed between the first flow channel and the second flow channel. A top surface of the rib defines a groove or a second bore. One or both of the first flow channel and the second flow channel is in fluid communication with the groove or the second bore.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: Disclosed are a power battery pack safety prevention and control system for an electric vehicle and a control method. The power battery pack safety prevention and control system includes a signal collection device, a master controller, and a stepwise prevention and control actuator. The master controller includes a fault diagnosis device, a cell thermal runway determination device, and a battery pack thermal runway spread determination device which are respectively electrically connected to the stepwise prevention and control actuator and send different control instructions to the stepwise prevention and control actuator. The stepwise prevention and control actuator can perform different levels of prevention and control actions according to different control instructions sent by the fault diagnosis device, the cell thermal runway determination device, and the battery pack thermal runway spread determination device.

Abstract: A charging apparatus includes a heat exchange pipeline, and a refrigerant liquid output pipe and a refrigerant liquid input pipe, which are connected to the heat exchange pipe. The charging apparatus can ensure a vehicle battery can be charged at an optimal temperature range, thereby reducing a charging time of the charging apparatus.

Abstract: The present disclosure relates to methods for making a reference electrode and a lithium ion battery having the reference electrode. The reference electrode obtained has a long service life, moreover, the manufacturing process is simple and can meet the industrial production requirements, making the production and the application of the lithium-ion battery with the reference electrode possible.

Abstract: 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 T0 of a first power battery, wherein the first power battery is a half cell; calculating a maximum temperature Tmax of thermal runaway of the first power battery based on a thermal runaway reaction kinetic model stored in the computer, calculating a maximum temperature rise ?T by making difference between the maximum temperature Tmax and the self heat generation onset temperature T0; and judging the thermal runaway safety of the first power battery by the relationship between the self heat generation onset temperature T0 and the maximum temperature rise ?T.

Abstract: 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 T0 of a first power battery, wherein the first power battery is a half cell; calculating a maximum temperature Tmax of thermal runaway of the first power battery based on a thermal runaway reaction kinetic model stored in the computer, calculating a maximum temperature rise ?T by making difference between the maximum temperature Tmax and the self heat generation onset temperature T0; and judging the thermal runaway safety of the first power battery by the relationship between the self heat generation onset temperature T0 and the maximum temperature rise ?T.

Abstract: 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.

Abstract: 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.