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：US20220239135A1

公开(公告)日：2022-07-28

申请号：US17540436

申请日：2021-12-02

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Zhanliang LI ,  Yu YAN ,  Shuyun XIONG ,  Weiping SUN ,  Zhimin DAN

IPC: H02J7/00 ,  H02J7/02

Abstract: The present application provide a power supply control method for a power conversion apparatus, where the power conversion apparatus is configured to conduct a power conversion between a charging apparatus and a power battery, the method includes: conducting a power-on self-test with the charging apparatus of auxiliary power by the power conversion apparatus; determining a power supply priority order of the charging power and the power battery on the basis of a state parameter of the power battery under the condition that the self-test of the power conversion apparatus succeeds; determining the one of the charging power of the charging apparatus and the power battery with a higher power supply priority as a current working power of the power conversion apparatus by the power conversion apparatus. The method of the present application can provide a stable working power for the power conversion apparatus without additional power supply device.

公开(公告)号：US20230253886A1

公开(公告)日：2023-08-10

申请号：US18187112

申请日：2023-03-21

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yuan YAO ,  Weichen HE ,  Guiying LIN ,  Huaisen ZHANG ,  Jinfeng GAO ,  Yu YAN

IPC: H02M3/335 ,  H02M3/00

CPC classification number: H02M3/3353 ,  H02M3/01

Abstract: A voltage conversion circuit includes an N-level conversion unit and N-1 DC-DC conversion units. The N-level conversion unit includes N output terminals at different levels. A first input terminal of the Mth DC-DC conversion unit is connected to the Mth output terminal of the N-level conversion unit, and a second input terminal of the Mth DC-DC conversion unit is connected to an (M+1)th output terminal of the N-level conversion unit. An output level of the Mth output terminal and an output level of the (M+1)th output terminal are adjacent levels. N and M are positive integers and satisfy N ≤ 3 and 1 ≥ M

公开(公告)号：US20230211701A1

公开(公告)日：2023-07-06

申请号：US18182841

申请日：2023-03-13

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Chenxu LUO ,  Jianfu HE ,  Qian LIU ,  Yu YAN ,  Yonghuang YE ,  Haizu JIN

IPC: B60L58/16 ,  B60L58/18 ,  B60L58/24 ,  H01M10/44 ,  H01M50/572 ,  H01M50/155 ,  H01M4/485

CPC classification number: B60L58/16 ,  B60L58/18 ,  B60L58/24 ,  H01M10/44 ,  H01M50/572 ,  H01M50/155 ,  H01M4/485 ,  B60L2240/547 ,  B60L2240/545

Abstract: A charging method for a secondary battery including a lithium-supplementing material. The method includes acquiring a first state of health of the secondary battery in response to the secondary battery being at a preset charging node, activating the lithium-supplementing material in response to the first state of health being less than or equal to a first threshold to supplement lithium for the secondary battery, performing a charging process on the secondary battery, determining a second state of health of the secondary battery based on a working parameter of the secondary battery in the charging process, and charging the secondary battery in response to the second state of health being greater than a second threshold.

公开(公告)号：US20230064434A1

公开(公告)日：2023-03-02

申请号：US17706648

申请日：2022-03-29

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Zhanliang LI ,  Zhimin DAN ,  Miaomiao ZHANG ,  Yu YAN ,  Zhenhui HUANG

IPC: B60S5/06 ,  G05B15/02 ,  G06T7/70

Abstract: Embodiments of the present application provide a battery swapping method, module, device and medium. The method includes: acquiring a first image captured for a vehicle within a battery swapping area, and acquiring a first location of a battery on the vehicle; determining a second location of the vehicle in the battery swapping area according to the first image; determining, according to the first location and the second location, a target location of the battery in the battery swapping area to control a battery swapping device to move to the target location for battery swapping. According to the embodiments of the present application, battery swapping can be completed in a case where a user parks the vehicle randomly in the battery swapping area. Thus, convenience of the battery swapping process is improved.

公开(公告)号：US20230062270A1

公开(公告)日：2023-03-02

申请号：US17562259

申请日：2021-12-27

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Zhanliang LI ,  Yuanmiao ZHAO ,  Xiyang ZUO ,  Xiaojian HUANG ,  Zhimin DAN ,  Yu YAN

IPC: H01M10/615 ,  H01M10/625 ,  H01M10/63 ,  H01M50/249

Abstract: The present application relates to a method for heating a battery pack, where the battery pack is connected to an inductive load via a converter and the method includes: controlling on and off of a switch module in the converter upon receiving a heating request, so as to control discharging and charging between the battery pack and the inductive load, connecting the battery pack and an auxiliary heating mechanism in parallel during a discharging stage of the battery pack; and disconnecting the auxiliary heating mechanism from the battery pack during a charging stage of the battery pack. The present application further relates to a battery heating system and an electric apparatus.

公开(公告)号：US20220239127A1

公开(公告)日：2022-07-28

申请号：US17459220

申请日：2021-08-27

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Weiping SUN ,  Zhimin DAN ,  Zhanliang LI ,  Shuyun XIONG ,  Yu YAN

IPC: H02J7/00 ,  B60L58/12 ,  G01R31/382

Abstract: Embodiments of the present application provides a method for pre-charging a power conversion device and a power conversion device. The power conversion device is configured to perform power conversion between a charging pile and a traction battery, and the method includes: receiving, by the power conversion device, a first message sent by a battery management system of the traction battery, and the first message is configured to indicate that the battery management system is ready for charging; performing, by the power conversion device, a pre-charging, and the pre-charging includes: charging a capacitor in the power conversion device; and forwarding, by the power conversion device, the first message to the charging pile after the pre-charging is completed. The technical solution of the embodiments of the present application can ensure a normal charging process.

公开(公告)号：US20230308013A1

公开(公告)日：2023-09-28

申请号：US18325966

申请日：2023-05-30

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yuan YAO ,  Zhimin DAN ,  Meng LI ,  Yu YAN

IPC: H02M1/44 ,  H02M3/335 ,  H02J7/00 ,  B60L53/31

CPC classification number: H02M1/44 ,  H02M3/33573 ,  H02M3/33576 ,  H02J7/007 ,  B60L53/31 ,  H02J2207/20

Abstract: A switching circuit includes a switching transistor, a metal unit, and a branch. The metal unit is provided at the switching transistor, and the branch is electrically connected between a ground and at least one of the switching transistor or between the metal unit. The branch includes a capacitor, and the capacitor is configured to discharge radiated interference.

公开(公告)号：US20230299606A1

公开(公告)日：2023-09-21

申请号：US18186948

申请日：2023-03-21

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xiyang ZUO ,  Yu YAN ,  Zhimin DAN ,  Zhanliang LI

IPC: H02J7/00 ,  H01M10/44 ,  H01M10/48 ,  H01M10/615 ,  H01M10/657

CPC classification number: H02J7/007182 ,  H01M10/443 ,  H01M10/488 ,  H01M10/615 ,  H01M10/657 ,  H02J7/00032 ,  H02J7/0048 ,  H02J7/007194 ,  H02J2207/20

Abstract: A charging and heating apparatus includes a power unit configured to be connected to a battery to be charged/discharged and perform voltage conversion on a received voltage and current and output a converted voltage to the battery, a unidirectional/bidirectional conversion unit connected to the power unit and configured to output a bidirectional alternating current or a preset current to the power unit, and a control unit connected to the unidirectional/bidirectional conversion unit and configured to, in response to the battery being in a heating mode, control the unidirectional/bidirectional conversion unit to output the bidirectional alternating current to the corresponding power unit, such that the battery self-heats under excitation of the bidirectional alternating current, and in response to the battery being in a charge/discharge mode, control the unidirectional/bidirectional conversion unit to output the preset current to the power unit, such that the battery is charged/discharged.

公开(公告)号：US20230198282A1

公开(公告)日：2023-06-22

申请号：US18172535

申请日：2023-02-22

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Zhanliang LI ,  Yuanmiao ZHAO ,  Xinwei CHEN ,  Xiaojian HUANG ,  Yu YAN ,  Zhimin DAN

IPC: H02J7/00

CPC classification number: H02J7/007194 ,  H02J7/0013

Abstract: A self-heating control circuit includes a control module configured to obtain a cell temperature of each of two battery packs connected in parallel and send a trigger signal in response to the cell temperature being lower than a threshold. The two battery packs include a first battery pack and a second battery pack. The control circuit further includes a switch module disposed at a charging and discharging circuit of the first battery pack. A control terminal of the switch module is connected to the control module and is configured to cut off the charging and discharging circuit upon reception of the trigger signal. The control circuit also includes an excitation module configured to form a path with the two battery packs upon cut-off of the charging and discharging circuit, and generate an excitation current, so that the excitation current flows back and forth between the two battery packs.