Byd Company Limited

Xiaohua Tang

Xuguang Zhou

Guangming Yang

Nan Liu

Jian Gong

Hongbin Luo

Ming Chang Yu

Chuanfu Wang

Ting Luo

Yingwu Xu

Kai Liu

Zhiyong Du

Xinxin Zhang

Xianhong Jiang

Yunhao Liao

Yi Ren

HongBing Luo

Youchuan Song

Huanguang Chen

Qiaoqiao Wu

Liang Liu

Chao Wang

Wei Chen

Wei Feng Chen

Jian Hua Liu

Bo Zhou

Jianhua Zhang

Hui Ma

Min Hu

Xiaofeng Shen

Xinghui Wang

Guangquan Chen

Axi Qi

Linwang Deng

Longfei Li

Shulin Liang

Yilong Yu

Jian Liu

Zheqing Tang

Ruru Niu

Fu Tang

Shaowen Yin

Lipin Cheng

Huan Xia

Zhouping Tang

Bo Zu

Yongzhuang Zhou

Cong Xia

Haibin Lan

Zifeng Zhang

Yinghui Wang

Donghong Chen

Xunjin Xu

Ruzhong Luo

Gexin Zheng

Junlin Gong

Ming Yu

A power supply system for an electric vehicle includes a battery module, a first DC/DC converter, a second DC/DC converter, a first switch, a second switch and a third switch. The battery module has a negative electrode, a first positive electrode and a second positive electrode. The first DC/DC converter has an input terminal connected with the second positive electrode. The second DC/DC converter has an input terminal connected with the second positive electrode. The first switch is connected between the second positive electrode and the first DC/DC converter. The second switch is connected between the second positive electrode and the second DC/DC converter. The third switch is connected between the first positive electrode and an output terminal of the second DC/DC converter.

Power supply system for electric vehicle and method for controlling the same

A power system for an electric vehicle, an electric vehicle and a motor controller for an electric vehicle are provided. The power system includes: a power battery (); a charge-discharge socket (); a three-level bidirectional DC-AC module (); a motor control switch (); a charge-discharge control module () having a first terminal connected with an AC terminal of the three-level bidirectional DC-AC module () and a second terminal connected with the charge-discharge socket (); and a control module () connected with a third terminal of the charge-discharge control module () and a third terminal of the motor control switch (), and configured to control the charge-discharge control module () and the motor control switch () according to a current working mode of the power system.

Power system for electric vehicle, electric vehicle and motor controller

A method, an upper computer and a system for programming nodes in a bus network are provided. The method comprises: analyzing a program file to be programmed to obtain data of the program file and a storage address corresponding to the data; broadcasting a routing request message and receiving responding messages returned from a plurality of lower computers, each lower computer corresponding to one node in the bus network; analyzing the responding messages to obtain an operating state of each node among the plurality of layers of nodes; receiving a selected node to be programmed, activating the selected node and transmitting the data and the storage address to a single chip microcomputer corresponding to the selected node when the operating state of each node is a forwarding state; and storing corresponding to the selected node the data in a memory of the single chip microcomputer according to the storage address.

Method, upper computer and system for programming nodes in a bus network

A hybrid vehicle includes a multi-mode power system. The power system includes a battery, an electrical power input, a first motor/generator, a second motor/generator, and a clutch. A first operating mode is defined by deactivation of the internal combustion engine and the operation of the vehicle by electrical force provided from the battery to the second motor/generator. In a second operating mode, activation of the internal combustion engine generates electrical power by providing rotational force to the first motor/generator. In a third operating mode, engagement of the clutch couples the internal combustion engine and the second motor/generator to provide rotational force to the wheels. In a fourth operating mode, engagement of the clutch couples the internal combustion engine with the second motor/generator, and the first motor/generator further provides rotational force to the wheels.

Hybrid vehicle having multi-mode controller

The present invention discloses a hybrid power output system for outputting the power to the wheel driving shaft, comprising an engine, a first motor, a second motor, a battery, a first clutch, a second clutch and a constant-mesh fixed ratio reduction unit, wherein the first motor and the second motor are connected electrically with the battery; the engine is connected to the first motor via the first clutch; the first motor is connected to the second motor via the second clutch; the second motor is connected to the wheel driving shaft via the constant-mesh fixed ratio reduction unit. This hybrid power output system can enhance the comfort of the vehicle, save the space and reduce the cost, moreover, it can realize multiple drive modes to improve the power efficiency and reduce the fuel consumption.

Hybrid power output system

An open phase detection system and method for a three-phase motor is provided. The open phase detection system comprises: a signal generating unit coupled to the three-phase motor and configured to generate a driving signal for driving the three-phase motor; a detecting unit coupled to the signal generating unit, and configured to detect whether the signal generating unit generates the driving signal and to detect three-phase current values of the three-phase motor; and a determining unit coupled to the detecting unit, and configured to determine whether the three-phase motor has open phase according to the three phase current values detected by the detecting unit when the driving signal is detected.

Open phase detection system and method for three-phase motor

A hybrid power output system for outputting the power to the wheel driving shaft, including and engine, a first motor, a second motor, a third motor, a battery, a first clutch, a second clutch, and a third clutch, wherein the first motor and the second motor are connected electrically with the battery, and the third motor is connected electrically with the battery or another battery; the engine is connected to the first motor via the first clutch, and connected to the third motor via the third clutch; the first motor is connected to the second motor via the second clutch, and the second motor is connected to a wheel driving shaft. The hybrid power output system can reduce the response time of the vehicle, perfect power performance, save space, and reduce cost as well.

A control system for a hybrid vehicle controls the various operating modes of the hybrid vehicle. Operating modes of the hybrid vehicle include an electric-only power mode, a series hybrid mode, a series hybrid dual-power mode, and a parallel hybrid tri-power mode. The control system selects one of the operating modes for the hybrid vehicle based on one or more inputs and comparisons. Examples of inputs for the control system include a gear-mode, a present battery storage capacity, a present velocity of the hybrid vehicle, and the previous operating mode of the hybrid power system. The control system may also take into account whether a user has selected the electric-only power mode. The control system may also control the operations of one or more components of the hybrid vehicle while operating in one of the operating modes.

A method and an apparatus for controlling output torque of a motor for an electric vehicle in uphill mode, the method comprises: detecting a tilt angle value U, a current vehicle speed value V and an accelerator-pedal travel value Gain of the vehicle, determining whether the vehicle is in uphill mode or not, and if the result is positive, then calculating a minimum torque Trequired for preventing the vehicle from slipping backward under the tilt angle value 0 and the current vehicle speed value V, obtaining a maximum output torque T, calculating an output torque T of the motor based on T, Tand Gain, and controlling the motor to output the calculated output torque T. With the method and apparatus in accordance with the present invention, when the electric vehicle is in uphill mode, even if the accelerator-pedal travel value is zero, the vehicle will not slip backward.

Method and apparatus for controlling output torque of a motor for an electric vehicle in uphill mode

A hybrid power system includes an engine, a clutch, a transmission, a motor and an energy storage device. The motor is connected to the energy storage device and the engine is connected to the input shaft of the transmission by the clutch. The output shaft of the transmission is operatively coupled with the output shaft of the motor to provide a coupled power output.

Hybrid power system and its controlling method

The present invention discloses a hybrid power driving system, comprising: an engine, a clutch, a first shaft, a second shaft disposed parallel to the first shaft, a motor, an energy storage device, and an output gear. The engine may be connected with the first shaft via the clutch. The motor is connected with the second shaft directly or indirectly, and is electrically connected with the energy storage device. The first shaft has a first gear, a second gear and a first synchronizer, in which the first gear and the second gear are mounted on the first shaft via bearings respectively, and the first synchronizer is selectively engaged with the first gear or the second gear. The second shaft may have a third gear, a fourth gear and a second synchronizer, in which the third gear may be mounted on the second shaft via a bearing. The fourth gear may be fixed to the second shaft. And the second synchronizer may be selectively engaged with the third gear or the fourth gear. The first gear may be engaged with the third gear, the second gear may be engaged with the fourth gear. And the third gear may be engaged with an output gear. The present invention also discloses a driving method of a hybrid power driving system. Through the first synchronizer and the second synchronizer selectively engaging with corresponding gears, a plurality of operating modes can be realized. And the structure is simple and compact.

Hybrid power driving system and driving method thereof

The present invention provides a battery-based grid energy storage for balancing the load of an power grid, wherein the energy storage comprises: a battery array; a bi-directional inverter unit; the bi-directional inverter system is configured to charge battery array using power from the power grid, or conversely, to transmit power from battery array to the power grid; a monitor system configured to detect the load, frequency and phase of the power grid, and control the bi-directional inverter system to charge battery array using power form the power grid, or conversely, transmits power from battery array to the power grid in accordance with the frequency and phase of the power grid so as to balance the load of the power grid, and meet the requirements during peak hours of electric power consumption.

Battery-based grid energy storage for balancing the load of a power grid

A clutchless transmission apparatus and control method thereof. The transmission apparatus comprises a motor () and a transmission (), said motor () is connected to said transmission () and supplies power to said transmission () via an input shaft of the transmission (), wherein said apparatus further comprises a control device (), which is electrically connected to said motor () and said transmission (), wherein said control device () is configured to determine whether a gear-position shifting is required based on rotation speed of said transmission (), if a gear-position shifting is required, regulates torque of said motor () to control said transmission () to disengage, and then regulates the rotation speed of said motor () based on the rotation speed of said transmission () to control said transmission () to engage for shifting gear-position. The clutchless transmission apparatus provided in the present invention doesn't need a clutch during gear-position shifting, and therefore it is light, simple, easy to maintain and control, and can be used in a wide range of application.

Clutchless transmission apparatus for controlling gear-position shifting and control method thereof

The present invention discloses a method and apparatus for controlling a motor for an electric vehicle. The method and apparatus calculates the current acceleration &#x3b1; of the motor according to the detected rotor position values in real-time, and if the current acceleration &#x3b1; is greater than a predetermined forward acceleration &#x3b1;0, the output torque of the motor is decreased. If the acceleration &#x3b1; is less than a predetermined backward acceleration &#x3b1;1, then the output torque of the motor is decreased. Thus, when the vehicle travels from a normal road surface to a smooth road surface, the decrease or increase output torque may suppress the abrupt speed variations.

Method and apparatus for controlling motor for skid mode of electric vehicle

A method and an apparatus for controlling output torque of a motor for an electric vehicle in downhill mode comprises following steps: detecting a tilt angle value &#x3b8;, a current vehicle speed value V and an accelerator-pedal travel value Gain of the vehicle, determining whether the vehicle is in downhill mode or not, and if the result is positive, then calculating a downhill slip torque Tof the vehicle under the tilt angle value &#x3b8;, obtaining a maximum output torque T, calculating an output torque T of the motor based on T, T, Gain and a given vehicle speed delimitative value V, and controlling the motor to output the calculated output torque T. The present invention ensures the vehicle speed not too high by controlling the output torque of an electric vehicle in downhill mode, even if the brake-pedal travel is zero.

Method and apparatus for controlling output torque of a motor for an electric vehicle in downhill mode

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Shenzhen, China

Xiaohua Tang