公开(公告)号：US20230035145A1

公开(公告)日：2023-02-02

申请号：US17715203

申请日：2022-04-07

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yu YAN ,  Xiyang ZUO ,  Diping LIU ,  Haili LI ,  Zhanliang LI ,  Zhimin DAN

IPC: H02J7/00

Abstract: The embodiments of the present application provide a method for charging a battery, a battery management system, and a charge and discharge device. The method for charging the battery includes: acquiring, by a BMS, a first charge current and sending it to a charge and discharge device, thus making the charge and discharge device charge the battery based on the first charge current; if a first accumulated charge quantity of the battery is greater than or equal to a first accumulated charge quantity threshold value, acquiring, by the BMS, a first discharge current and sending it to the charge and discharge device, thus making the charge and discharge device control the battery to discharge based on the first discharge current; and if a first accumulated discharge quantity of the battery is greater than or equal to a first accumulated discharge quantity threshold value.

公开(公告)号：US20230029492A1

公开(公告)日：2023-02-02

申请号：US17715166

申请日：2022-04-07

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xiyang ZUO ,  Yu YAN ,  Jinfeng GAO ,  Diping LIU ,  Zhanliang LI ,  Yizhen HOU

IPC: H02J7/00 ,  H02J7/02 ,  H02J3/28

Abstract: Embodiments of the present application provide a charging and discharging apparatus and a battery charging method, which are capable of ensuring security performance of a battery. The apparatus comprises a bi-directional DC/DC converter and a control unit, wherein the control unit is configured to: receive a first charging current transmitted by a battery management system (BMS) of a battery, control the bi-directional DC/DC converter based on the first charging current to charge the battery through an energy storage battery; receive a first discharging current transmitted by the BMS and control the bi-directional DC/DC converter based on the first discharging current to discharge a battery capacity of the battery to the energy storage battery; and receive a second charging current transmitted by the BMS and control the bi-directional DC/DC converter based on the second charging current to charge the battery through the energy storage battery.

公开(公告)号：US20230208149A1

公开(公告)日：2023-06-29

申请号：US17940318

申请日：2022-09-08

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Diping LIU ,  YU YAN ,  Xiyang ZUO ,  Xianxi PAN ,  Bao LI ,  Zhimin DAN

IPC: H02J7/00

CPC classification number: H02J7/00034 ,  H02J7/00716 ,  H02J7/0032

Abstract: 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.