Contemporary Amperex Technology Co., Ltd.

Contemporary Amperex Technology (hong Kong) Limited

Contemporary Amperex Intelligence Technology (shanghai) Limited

Bao Li

Zhimin Dan

Xiyang Zuo

Xiaojian Huang

Xiong Zheng

Tiancong Wang

Kai Wu

Yu Yan

Xianxi Pan

Diping Liu

Haiming Qin

Chuanhui Zhang

A power supply system includes a charger supporting an alternating current/direct current bidirectional conversion, a battery, an electrical converter and an electrical apparatus. The charger is electrically connected with both the battery and the electrical apparatus, and the battery is electrically connected with the electrical apparatus through the electrical converter.

Power supply system, vehicle and power supply method

An electric motor, a power system, a control method, and an electric vehicle. The electric motor comprises a first N-phase winding set and a second N-phase winding set, wherein the first N-phase winding set and the second N-phase winding set are both used for being connected to a traction battery by means of a conversion module. When the traction battery starts to be heated, the first N-phase winding set and the second N-phase winding set are powered on. The direction of a magnetic field generated by the first winding set and the direction of a magnetic field generated by the second winding set have a phase difference, such that the magnetic fields counteract each other; and a magnetic field intensity in a stator winding of each phase is reduced, and an air-gap magnetic flux is also reduced, thereby alleviating the problems of electric motor heating and electric motor NVH.

Motor, power system, control method, and electric vehicle

A battery charging control method applicable to a vehicle electrical system that includes a current control unit including a semiconductor device. Two ends of the current control unit are connected to a battery and a charging power supply, respectively. The method includes controlling, when a temperature of the battery is below a preset temperature, the current control unit to be in a first state in which the semiconductor device is reversely connected in a circuit, sending a first charging request including a first charging current required to heat the battery to the preset temperature, controlling, when the temperature of the battery reaches the preset temperature, the current control unit to be in a second state in which the semiconductor device is disconnected from the circuit or forwardly connected in the circuit, and sending a second charging request including a second charging current at which the battery is charged.

Battery charging method and vehicle electrical system for controlling charging current based on temperature of battery

The embodiments of this application relate to the technical field of battery, and in particular, to a thermal management system, a method and an equipment. In this thermal management system, a compressor and a condenser form a cooling loop with a thermal exchange pipeline of the battery, and a compressor and an evaporator form a heating loop with a thermal exchange pipeline, so that this thermal management system can provide both cooling and heating for battery, in comparison with the direct cooling system and heating film, this thermal management system features simple structure and high reliability. In addition, the locations of the condenser and the evaporator can be reasonably arranged as required to achieve the secondary utilization of hot air and cold air.

Thermal management system, thermal management method and electrical device

This application provides a torque compensation method for a vehicle, a torque compensation apparatus of a vehicle, and an associated computer-readable storage medium. The torque compensation method includes: when a vehicle control module determines that the vehicle is in a sliding state during a brake idle stroke, obtaining, by the vehicle control module, a pressure of a brake master cylinder of the vehicle, and controlling a motor of the vehicle based on the pressure of the brake master cylinder to output a compensation torque. In this application, a range of the brake idle stroke of the vehicle can be precisely determined, so as to control the motor of the vehicle to output the compensation torque in a timely manner, thereby effectively suppressing sliding during the brake idle stroke of the vehicle and ensuring safe driving.

Torque compensation method and apparatus of vehicle, and computer-readable storage medium

The present application provides a switch control device and method, a motor controller, and a battery pack heating control system. The switch control device includes: a processing module configured to select, when it is determined that a switch control cycle switches from a previous cycle to a current cycle, a target upper bridge arm switch module for the current cycle from upper bridge arm switch modules other than a target upper bridge arm switch module for the previous cycle and/or select a target lower bridge arm switch module for the current cycle from lower bridge arm switch modules other than a target lower bridge arm switch module for the previous cycle; wherein the processing module is further configured to: during each switch control cycle, control the target upper bridge arm switch module and the target lower bridge arm switch module to be turned on and off.

Switch control device and method, motor controller, and battery pack heating control system

A battery pack heating system includes: a main positive switch, a main negative switch, an inverter, an external port, a motor, a control module for auxiliary charging branch, a vehicle control unit, a motor control unit, and a battery management module. The battery management module is configured to send, when an acquired state parameter of the battery pack meets a preset low-temperature-low-power condition, a low-temperature-low-power heating request instruction to the vehicle control unit and the control module respectively. The control module is configured to send a first control signal to control the auxiliary charging branch to be connected. The vehicle control unit is configured to send a second control signal to enable the motor control unit to control on-off of the switch modules in the inverter, and a third control signal to enable the battery management module to control on-off of the main positive switch.

Battery pack heating system and control method thereof

Disclosed is a motor, a control method, a power system, and an electric vehicle. Each phase stator winding of the motor includes two sub-winding sets. When a traction battery needs to be heated, the two sub-winding sets of the motor store electrical energy and provide alternating currents to the traction battery through an inverter, so that the traction battery uses its internal resistance for heating. In addition, the two sub-winding sets generate opposite magnetic fields which cancel each other out, so that the strength of the magnetic field inside each phase stator winding and the air gap magnetic flux are reduced, thereby alleviating the heat generation and NVH problems of the motor.

Motor, control method, power system, and electric vehicle

Disclosed is a traction battery self-heating control method and a device. Acquiring a second temperature of a rotor at a current sampling time according to system parameters and a first temperature of the rotor at a previous sampling time, and estimating a third temperature of the rotor at a next sampling time according to the first temperature and the second temperature, and stopping the self-heating of the traction battery when the third temperature reaches a demagnetization temperature of the rotor. Whether to stop the self-heating of the traction battery is determined by estimating a rotor temperature under the self-heating condition, and comparing the rotor temperature with the demagnetization temperature of the rotor, and thus the self-heating control of the traction battery is realized.

Traction battery self-heating control method and device

The present application provides a battery thermal management system, a control method and device of a battery heating system, a device, and a medium. The method includes: acquiring a temperature rise rate parameter of the battery; determining proportions of a square wave signal and a sine wave signal in a first control signal of the switch components according to the temperature rise rate parameter; generating the first control signal of the switch components according to the proportions of the square wave signal and the sine wave signal; outputting the first control signal to the switch components to control switching on or off of the switch components via the first control signal, so as to generate an alternating current in a loop connecting the battery and the motor and heat the battery using the alternating current.

Battery thermal management system, control method and device of battery heating system, device and medium

The application provides a control system and method for a battery pack heating system. The control system includes: a battery management system configured to acquire a state parameter of a battery pack, and send heating request information to a vehicle controller when determining the state parameter of the battery pack meets a preset heating condition; a motor controller configured to send, to the vehicle controller, feedback information indicating that a motor of the battery pack heating system is in a non-operating state, when determining the motor is in the non-operating state, and control, in response to a first control signal, a target upper bridge arm switch module and a target lower bridge arm switch module to be periodically turned on or off; and the vehicle controller configured to send the first control signal to the motor controller in response to the heating request information and the feedback information.

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Fujian, China

Bao Li