公开(公告)号：US10780795B2

公开(公告)日：2020-09-22

申请号：US16370975

申请日：2019-03-30

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Xiyang Zuo ,  Zhimin Dan ,  Wei Zhang ,  Yizhen Hou ,  Guowei Li ,  Xingyuan Wu ,  Yanru Li

IPC: B60L58/27 ,  B60L58/12 ,  B60L50/51

Abstract: The disclosure provides a battery heating system and a control method thereof. The system includes a first switch, a second switch, a switch component, a motor, and a main controller. The first switch, the second switch, the switch component and the main controller are integrated in a same housing. The main controller is to determine, based on a state parameter of the battery pack, that the battery pack needs to be heated, and to send a battery heating request to a vehicle controller, so as to enable the vehicle controller to send a battery heating instruction to the main controller according to the battery heating request in a case where a vehicle is in a static state and the motor is not operating; and to control, based on the battery heating instruction, the first switch, the second switch and the switch component so as to heat the battery pack.

公开(公告)号：US11772515B2

公开(公告)日：2023-10-03

申请号：US17385879

申请日：2021-07-26

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Xiyang Zuo ,  Zhimin Dan ,  Xiong Zheng ,  Bao Li ,  Tiancong Wang

IPC: B60L58/27 ,  H01M10/615 ,  H01M10/625 ,  H01M10/633 ,  H01M10/657 ,  B60L58/12 ,  H01M10/42

CPC classification number: B60L58/27 ,  B60L58/12 ,  H01M10/425 ,  H01M10/615 ,  H01M10/625 ,  H01M10/633 ,  H01M10/657 ,  B60L2240/545 ,  H01M2010/4271 ,  H01M2220/20

Abstract: 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.

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：US20220407338A1

公开(公告)日：2022-12-22

申请号：US17561239

申请日：2021-12-23

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Zhanliang Li ,  Yu Yan ,  Zhimin Dan ,  Shuyun Xiong ,  Weiping Sun ,  Xiyang Zuo

IPC: H02J7/00 ,  G01R31/382

Abstract: The present application provides a charging control method and apparatus, a battery management system and a readable storage medium. The charging control method includes: obtaining a battery temperature and a battery state of charge; determining a pulse charging frequency according to the battery temperature, the battery state of charge and a pre-calibrated corresponding relationship; obtaining a preset waveform characteristic of a pulse charging waveform; where the waveform characteristic includes a ratio range of an area of a positive pulse waveform to an area of a negative pulse waveform in each pulse cycle of the pulse charging waveform; and generating a charging request according to the pulse charging frequency and the waveform characteristic and transmitting the charging request to a charging device. The method is used for improving charging stability and safety of a battery.

公开(公告)号：US11515588B2

公开(公告)日：2022-11-29

申请号：US16860408

申请日：2020-04-28

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Xinxin Du ,  Zhimin Dan ,  Fuping Luo ,  Shengwei Wang ,  Tiancong Wang ,  Xiyang Zuo

IPC: H01M10/637 ,  H01M10/615 ,  H02J7/00

Abstract: Disclosed are a heating method for a rechargeable battery, a control unit and a heating circuit. The heating method comprises: determining a frequency value of a pulse current for heating the rechargeable battery in response to a heating command of the rechargeable battery; determining a current value of the pulse current according to the frequency value and an acquired state parameter of the rechargeable battery; judging whether the current value satisfies a preset heating demand; if the current value satisfies the heating demand, generating the pulse current under control according to the frequency value; if the current value does not satisfy the heating demand, re-determining the frequency value and the current value of the pulse current. The embodiments of the present disclosure further provide a control unit and a heating circuit.

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：US11139514B2

公开(公告)日：2021-10-05

申请号：US17057261

申请日：2018-12-28

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Xiyang Zuo ,  Zhimin Dan ,  Yizhen Hou ,  Wei Zhang ,  Xingyuan Wu ,  Taosheng Zhu

IPC: H01M10/637 ,  H01M10/615 ,  H01M10/625 ,  B60L58/24 ,  B60L58/18

Abstract: A battery pack heating apparatus for double vehicle heating and a control method. In the embodiments of the present application, the apparatus is portably arranged outside a vehicle, and includes: an energy storage device; a current sensor; a first diode, an input end of the first diode connected with a second end of the current sensor; a first heating interface; a first switching device connected between the second end of the current sensor and a positive electrode of the first heating interface; a second diode, an output end of the second diode connected with the second end of the current sensor; a second heating interface; a second switching device connected between the second end of the current sensor and a negative electrode of the second heating interface; and a heating control module configured to control on-off states of the first and the second switching devices.

公开(公告)号：US10971771B2

公开(公告)日：2021-04-06

申请号：US16297233

申请日：2019-03-08

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Zhimin Dan ,  Xiyang Zuo ,  Wei Zhang ,  Yizhen Hou ,  Guowei Li ,  Xingyuan Wu ,  Yanru Li

IPC: H02P27/08 ,  H02P6/14 ,  H01M10/63 ,  H01M10/615 ,  H01M10/625 ,  H01M10/42 ,  H01M10/48 ,  H02J7/00 ,  H02P3/18 ,  H02P27/06 ,  H03K19/20

Abstract: The present disclosure provides a battery heating system and a control method thereof. The battery heating system includes a main positive switch, a main negative switch, an inverter, a motor, and a battery management unit. The inverter includes a first phase bridge arm, a second phase bridge arm and a third phase bridge arm connected in parallel. A motor controller in the inverter is configured to output a drive signal to a target upper-bridge-arm switch unit and a target lower-bridge-arm switch unit, so as to control the target upper-bridge-arm switch unit and the target lower-bridge-arm switch unit to be periodically turned on and off. The battery management unit is configured to collect state parameters of the battery pack. When the state parameters of the battery pack meet preset heating conditions, a control signal is sent to the motor controller to control the motor controller to output the drive signal.

公开(公告)号：US11904728B2

公开(公告)日：2024-02-20

申请号：US17458640

申请日：2021-08-27

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Yanru Li ,  Xingyuan Wu ,  Guowei Li ,  Wei Zhang ,  Zhimin Dan ,  Xiyang Zuo

IPC: H01M10/6568 ,  B60L58/26 ,  B60H1/00 ,  H01M10/6563

CPC classification number: B60L58/26 ,  B60H1/00392 ,  B60H1/00485 ,  H01M10/6568 ,  H01M10/6563

Abstract: This application discloses a thermal management system for a battery pack and a thermal management system for an electric vehicle. the thermal management system for the battery pack includes: a thermal management device for the battery pack, a processor, and a solenoid valve network connected to the thermal management device for the battery pack. An external port of the solenoid valve network is connected to an external cooling system. The processor is configured to control operating status of a solenoid valve in the solenoid valve network, so that the thermal management device for the battery pack heats the battery pack by using heat generated by the external cooling system.

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.