公开(公告)号：US11685289B2

公开(公告)日：2023-06-27

申请号：US17562286

申请日：2021-12-27

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Jinfeng Gao ,  Chen Qi ,  Xiyang Zuo ,  Xiaojian Huang

IPC: B60L58/12 ,  B60L50/64 ,  H02J7/00

CPC classification number: B60L58/12 ,  B60L50/64 ,  H02J7/007 ,  B60L2210/10 ,  B60L2210/30

Abstract: Embodiments of the present application provide a charging and discharging device. The charging and discharging device includes an AC/DC converter, a first DC/DC converter, a second DC/DC converter and a control unit. The control unit is used to: receive a first charging request, the first charging request including a first charging voltage and a first charging current; set output power of the first DC/DC converter based on the first charging voltage and the first charging current; turn on the second DC/DC converter if an SOC of the energy storage unit is greater than a first threshold to charge the battery by the energy storage unit; and adjust output power of the second DC/DC converter, so as to enable a voltage difference between a bus voltage and a bus balance voltage of the charging and discharging device to be less than or equal to a preset value.

公开(公告)号：US11650261B2

公开(公告)日：2023-05-16

申请号：US17562079

申请日：2021-12-27

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Fangjie Zhou ,  Yizhen Hou ,  Xiyang Zuo ,  Qiandeng Li ,  Le Chu

IPC: G01R31/389 ,  G01N27/02 ,  G01R31/392

CPC classification number: G01R31/389 ,  G01N27/026 ,  G01R31/392

Abstract: Embodiments of the present application provide a detection apparatus of electrochemical impedance spectroscopy and a battery management system, the detection apparatus including a waveform generator, where the waveform generator is integrated in a battery monitoring chip; an excitation resistor; a detection resistor; and an MOS switch, wherein the waveform generator is configured to generate a pulse waveform, a gate electrode of the MOS switch is configured to receive the pulse waveform; the excitation resistor is configured to enable the battery to generate an excitation current when the gate electrode of the MOS switch receives the pulse waveform; the detection resistor is configured to convert the excitation current into an excitation voltage, the excitation voltage is configured to calculate an electrochemical impedance of the battery, The detection apparatus of electrochemical impedance spectroscopy in embodiments of the present application can lower cost and volume of EIS detection.

公开(公告)号：US11453311B2

公开(公告)日：2022-09-27

申请号：US17541296

申请日：2021-12-03

Applicant: Contemporary Amperex Technology Co., Limited

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

IPC: B60L58/27 ,  H01M10/615 ,  H01M10/63 ,  H01M10/48 ,  H01M10/42 ,  H05B1/02 ,  B60L53/20 ,  H01M10/657 ,  H02P27/06

Abstract: 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.

公开(公告)号：US11338702B2

公开(公告)日：2022-05-24

申请号：US17390873

申请日：2021-07-31

Applicant: Contemporary Amperex Technology Co., Limited

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

IPC: B60L58/27 ,  H01M10/44 ,  H02J7/00 ,  H01M10/615 ,  H01M10/625 ,  H01M10/633 ,  H02P29/68

Abstract: 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.

公开(公告)号：US20210075073A1

公开(公告)日：2021-03-11

申请号：US17099956

申请日：2020-11-17

Applicant: Contemporary Amperex Technology Co., Limited

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

IPC: H01M10/615 ,  H01M10/48 ,  H01M10/637 ,  H01M10/657 ,  H01M10/625 ,  H02J7/34 ,  H02J7/00

Abstract: The present application discloses a heating module, a heating method for a battery module, and a heating system. The heating module includes: an energy storage unit, a first switch unit, a second switch unit and a control unit. The energy storage unit, a first battery unit in a battery module and the first switch unit may form a first heating loop; the energy storage unit, a second battery unit in the battery module, and the second switch unit may form a second heating loop. The control unit may control the first switch unit or the second switch unit, so as to sequentially switch on, between the first heating loop and the second heating loop, a heating loop where a battery unit with a higher state of charge is located and a heating loop where a battery unit with a lower state of charge is located.

公开(公告)号：US20200381788A1

公开(公告)日：2020-12-03

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 ,  H02J7/00 ,  H01M10/615

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：US12051934B2

公开(公告)日：2024-07-30

申请号：US17563513

申请日：2021-12-28

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Yu Yan ,  Xiyang Zuo ,  Zhimin Dan ,  Haili Li ,  Shan Huang ,  Shichao Li

IPC: H02J7/00 ,  B60L50/60 ,  B60L58/12 ,  H01M10/42

CPC classification number: H02J7/00714 ,  B60L50/60 ,  B60L58/12 ,  H01M10/425 ,  H02J7/0048 ,  B60L2210/10 ,  B60L2210/30 ,  H01M2010/4271

Abstract: Embodiments of the application provide a method for charging battery a charging and discharging device, which can ensure the safety performance of the battery. The charging and discharging device includes a first DC/DC converter, a unidirectional AC/DC converter and a control unit, where the first DC/DC converter is a unidirectional DC/DC converter, and the control unit is configured to: receive a first charging current and control the unidirectional AC/DC converter and the first DC/DC converter to charge a battery through an AC power source based on the first charging current; receive a first discharging current, and control the battery to release power based on the first discharging current; and receive a second charging current, and control the unidirectional AC/DC converter and the first DC/DC converter to charge the battery through the AC power source based on the second charging current.

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：US11309598B2

公开(公告)日：2022-04-19

申请号：US16233096

申请日：2018-12-27

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Zhimin Dan ,  Wenbin Lu ,  Wei Zhang ,  Yizhen Hou ,  Teng Yu ,  Xiyang Zuo ,  Xingyuan Wu ,  Taosheng Zhu

IPC: H01M10/615 ,  H01M10/651 ,  H01M10/6571 ,  H01M10/42 ,  G01R31/382 ,  G01R19/165

Abstract: The present disclosure provides a heating control method and a heating control device. The heating control method includes: acquiring an average current value in a heating circuit of a power battery pack; calculating a current output value required for nth cycle according to an average current value of the nth cycle, an average current value of (n−1)th cycle, an average current value of (n−2)th cycle, a preset current value, n is equal to or greater than 3; outputting a PWM signal to a switch device of the heating circuit according to a pre-calibrated PWM control parameter corresponding to the current output value so that a difference between an actual current value in the heating circuit and the preset current value is less than a preset threshold.

公开(公告)号：US11001165B2

公开(公告)日：2021-05-11

申请号：US16289413

申请日：2019-02-28

Applicant: Contemporary Amperex Technology Co., Limited

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

IPC: H01M10/06 ,  B60L58/27 ,  B60L53/62 ,  B60L53/16

Abstract: The embodiments of the present disclosure provide a battery pack heating apparatus and a method of battery pack heating control. According to an embodiment of the present disclosure, a battery pack heating apparatus is provided. The battery pack heating apparatus is applicable portably and externally to a vehicle and includes: an electrical energy conversion component, including an energy storage device, a first set of switches and a second set of switches; a heating interface connected to the energy storage device via the first set of switches to form a first heating loop and connected to the energy storage device via the second set of switches to form a second heating loop, the heating interface being configured to be connected to a battery pack of one vehicle; and a heating control module configured to control a direction of electrical energy transfer between the battery pack and the energy storage device.