公开(公告)号：US20230411734A1

公开(公告)日：2023-12-21

申请号：US18459392

申请日：2023-08-31

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xiaojian Huang ,  Xianxi Pan ,  Zhimin Dan

IPC: H01M10/657 ,  H01M10/615 ,  H01M10/42 ,  H01M10/625 ,  H01M10/63 ,  B60L58/27

CPC classification number: H01M10/657 ,  H01M10/615 ,  H01M10/4264 ,  H01M10/625 ,  H01M10/63 ,  B60L58/27 ,  H01M2220/20 ,  B60L50/64

Abstract: Provided are a battery heating device and a control method and circuit therefor, and a power device. The battery heating device includes: a heating module including a first bridge arm, a second bridge arm, and an energy storage element; and a control module configured to control the first bridge arm and the second bridge arm, to form a circuit for discharging from a first battery cell to the energy storage element and a circuit for charging from the energy storage element and the first battery cell to a second battery cell, and/or to form a circuit for discharging from the second battery cell to the energy storage element and a circuit for charging from the energy storage element and the second battery cell to the first battery cell, for heating of the first battery cell and the second battery cell.

公开(公告)号：US11605848B2

公开(公告)日：2023-03-14

申请号：US17877208

申请日：2022-07-29

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xiaojian Huang ,  Zhimin Dan ,  Bao Li ,  Xiyang Zuo

IPC: H01M10/63 ,  H01M10/615 ,  H01M10/625 ,  H01M10/48 ,  H02P29/66 ,  G01K3/00 ,  G01K3/10 ,  G01R31/34 ,  B60L58/27

Abstract: 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.

公开(公告)号：US11418143B2

公开(公告)日：2022-08-16

申请号：US17529917

申请日：2021-11-18

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xiaojian Huang ,  Zhimin Dan ,  Xianxi Pan ,  Xiyang Zuo

IPC: H02P29/60 ,  B60L50/51 ,  H02P27/06

Abstract: The present application provides a control method, an apparatus, a power system, and an electric vehicle, relating to the field of electric vehicles. The method includes: obtaining a battery cell temperature of a power battery, and sending a first control signal to an inverter when the battery cell temperature meets a preset power battery heating condition, where the first control signal is configured to control the inverter to convert a current provided by the power battery into an alternating current with a randomly changing frequency, and the alternating current with a randomly changing frequency is configured to supply power to a permanent magnet motor. New frequency components may be introduced to evenly distribute originally concentrated radial electromagnetic forces to an entire stator, thereby reducing vibration noises during the heating process of the power battery.

公开(公告)号：US11975632B2

公开(公告)日：2024-05-07

申请号：US17563207

申请日：2021-12-28

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xiaojian Huang ,  Zhimin Dan ,  Jinfeng Gao ,  Jin Huang

IPC: B60L58/27 ,  B60L1/02 ,  B60L50/51 ,  B60L53/22 ,  B60L58/12 ,  B60L58/25 ,  H01M10/615 ,  H01M10/625 ,  H01M10/63 ,  H02M7/537

CPC classification number: B60L58/27 ,  B60L1/02 ,  B60L50/51 ,  B60L53/22 ,  B60L58/12 ,  B60L58/25 ,  H01M10/615 ,  H01M10/625 ,  H01M10/63 ,  H02M7/537 ,  B60L2210/40 ,  B60L2240/545 ,  H01M2220/20

Abstract: The present application provide a control method of a power battery heating system. The method includes: controlling all upper bridge arms of a first bridge arm group and all lower bridge arms of a second bridge arm group to be turned on, and controlling all lower bridge arms of the first bridge arm group and all upper bridge arms of the second bridge arm group to be turned off, so as to form a first loop; controlling all the lower bridge arms of the first bridge arm group and all the upper bridge arms of the second bridge arm group to be turned on, and controlling all the upper bridge arms of the first bridge arm group and all the lower bridge arms of the second bridge arm group to be turned off, so as to form a second loop. The method is used to heat the power battery.

公开(公告)号：US20230130303A1

公开(公告)日：2023-04-27

申请号：US18085490

申请日：2022-12-20

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xiaojian Huang ,  Zhimin Dan ,  Xianxi Pan ,  Xiyang Zuo

IPC: H02P29/68 ,  H02P27/06 ,  H02P21/14

Abstract: The embodiments of the present disclosure provide a control method, a device, a power system, and an electric vehicle. The method is applied to a motor controller of the power system. The power system further includes a power battery, a motor, and an inverter. The method includes: sending a first control signal to the inverter when a cell temperature of the power battery satisfies a preset heating condition for the power battery; where the first control signal is configured to control the inverter to convert an electricity provided by the power battery into an alternating current with a frequency changing randomly, and the alternating current with the frequency changing randomly is configured to supply power to the motor.

公开(公告)号：US11606058B2

公开(公告)日：2023-03-14

申请号：US17878424

申请日：2022-08-01

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xiaojian Huang ,  Zhimin Dan ,  Bao Li ,  Xiyang Zuo

IPC: H02P29/60 ,  B60L50/60 ,  B60L58/27

Abstract: 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.

公开(公告)号：US11502346B1

公开(公告)日：2022-11-15

申请号：US17877208

申请日：2022-07-29

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xiaojian Huang ,  Zhimin Dan ,  Bao Li ,  Xiyang Zuo

IPC: H01M10/63 ,  H01M10/615 ,  H01M10/625 ,  H01M10/48 ,  H02P29/66 ,  G01K3/00 ,  G01K3/10 ,  G01R31/34 ,  B60L58/27

Abstract: 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.

公开(公告)号：US20240363918A1

公开(公告)日：2024-10-31

申请号：US18765330

申请日：2024-07-08

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Zhanliang Li ,  Yuanmiao Zhao ,  Yu Yan ,  Zhimin Dan ,  Xiaojian Huang ,  Xinwei Chen

IPC: H01M10/637 ,  B60L58/27 ,  H01M10/615 ,  H01M10/625 ,  H01M10/63 ,  H02J7/00 ,  H02P27/08 ,  H02P29/60

CPC classification number: H01M10/637 ,  H01M10/615 ,  H01M10/625 ,  H01M10/63 ,  H02J7/0063 ,  H02P27/08 ,  H02P29/60 ,  B60L58/27 ,  H01M2220/20

Abstract: Disclosed is a control method of a heating system for a battery. The control method includes: alternately controlling a switch module to be in a first switch state within a first duration and in a second switch state within a second duration; discharging to a power supply module by an energy storage module through a first loop within the first half time T of the first duration, and charging the energy storage module by the power supply module through the first loop within the second half time T of the first duration; and discharging to the power supply module by the energy storage module through a second loop within the first half time T of the second duration, and charging the energy storage module by the power supply module through the second loop within the second half time T of the second duration.

公开(公告)号：US12119697B2

公开(公告)日：2024-10-15

申请号：US18594808

申请日：2024-03-04

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yuanmiao Zhao ,  Zhimin Dan ,  Yu Yan ,  Zhanliang Li ,  Xiaojian Huang ,  Xinwei Chen

IPC: H02J7/00 ,  B60L58/18 ,  H02J7/14

CPC classification number: H02J7/00712 ,  B60L58/18 ,  H02J7/0014 ,  B60L2240/547

Abstract: A voltage regulation circuit for traction battery includes a traction battery, a heating module, a charge/discharge interface, and a voltage regulation module. The heating module includes a power storage element and a switch module. The traction battery is connected in parallel to the switch module. An external charging and discharging device is connected in parallel to the traction battery through the charge/discharge interface. The voltage regulation module includes a plurality of switches and a power storage regulation element, and the plurality of switches and the power storage regulation element are disposed between the charge/discharge interface and the traction battery. The voltage regulation module and the switch module are configured to regulate, in response to a voltage regulation control signal, a charge/discharge voltage between the traction battery and the power storage element and a charge voltage of the external charging and discharging device for the traction battery.

公开(公告)号：US20230256867A1

公开(公告)日：2023-08-17

申请号：US18303584

申请日：2023-04-20

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Xiaojian Huang ,  Zhimin Dan ,  Jinfeng Gao ,  Jin Huang

IPC: B60L58/27 ,  B60L1/02 ,  B60L58/25 ,  B60L50/51 ,  B60L53/22 ,  H01M10/63 ,  H01M10/625 ,  H01M10/615 ,  H02M7/537

CPC classification number: B60L58/27 ,  B60L1/02 ,  B60L58/25 ,  B60L50/51 ,  B60L53/22 ,  H01M10/63 ,  H01M10/625 ,  H01M10/615 ,  H02M7/537 ,  H01M2220/20 ,  B60L2210/40

Abstract: A traction battery heating circuit, system, and control method, and an electric device are provided. In some embodiments, the traction battery heating circuit includes: a power supply module, including at least one battery group; an inverter module, connected to the power supply module and including an M-phase leg circuit, where the leg circuit is connected in parallel to the battery group, and M is an even multiple of three; a driving module, including a motor having M windings, where the M windings are respectively connected to M phase legs of the leg circuit in one-to-one correspondence; and a control module, connected to the leg circuit, configured to control upper legs of at least three phase legs in the leg circuit and lower legs of the same number of phase legs in remaining legs to be turned on.