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公开(公告)号:US12115878B2
公开(公告)日:2024-10-15
申请号:US17712085
申请日:2022-04-02
Applicant: Contemporary Amperex Technology Co., Limited
Inventor: Zhanliang Li , Yu Yan , Zhimin Dan , Miaomiao Zhang
CPC classification number: B60L53/80 , B60L53/53 , B60S5/06 , H02J3/322 , H02J7/0013 , H02J7/007 , B60L53/63 , B60L58/12 , H02J7/02
Abstract: The embodiments of the present application provide a method, apparatus, device, and medium for electric energy transmission. The method includes: determining a resource value of a unit of electric energy of a grid at a target time; under a condition that the resource value is greater than or equal to a first resource threshold, determining a number of available batteries in a battery swapping station and an ordered number of batteries in the battery swapping station within a target time period; and under a condition that the number of available batteries is greater than a number of reserved batteries, controlling a charging and discharging module to transmit electric energy of a first battery in the battery swapping station to the grid.
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公开(公告)号:US12095301B2
公开(公告)日:2024-09-17
申请号:US17980860
申请日:2022-11-04
Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED
Inventor: Shuyun Xiong , Yu Yan , Zhimin Dan , Zhanliang Li , Weiping Sun
CPC classification number: H02J7/00711 , B60L53/62 , B60L58/12 , H01M10/425 , H01M10/443 , H01M10/46 , H02J7/00036 , H02J7/0047 , H02J7/00712 , H02J7/007194 , B60L53/66 , H01M2010/4271 , H01M2220/20
Abstract: A charging method, a battery management system for a traction battery and a charging pile are provided, which can effectively ensure normal charging of an electric vehicle. The charging method is used for charging a traction battery, and the method includes: determining, by the battery management system (BMS) of the traction battery, a pulse charging demand parameter according to a battery state parameter of the traction battery; and sending a pulse charging information to a charging pile by the BMS, the pulse charging information including the pulse charging demand parameter for indicating the charging pile to output a pulse current for charging the traction battery.
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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.
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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.
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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.
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公开(公告)号:US20230061401A1
公开(公告)日:2023-03-02
申请号:US17712085
申请日:2022-04-02
Applicant: Contemporary Amperex Technology Co., Limited
Inventor: Zhanliang LI , Yu Yan , Zhimin Dan , Miaomiao Zhang
Abstract: The embodiments of the present application provide a method, apparatus, device, and medium for electric energy transmission. The method includes: determining a resource value of a unit of electric energy of a grid at a target time; under a condition that the resource value is greater than or equal to a first resource threshold, determining a number of available batteries in a battery swapping station and an ordered number of batteries in the battery swapping station within a target time period; and under a condition that the number of available batteries is greater than a number of reserved batteries, controlling a charging and discharging module to transmit electric energy of a first battery in the battery swapping station to the grid.
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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.
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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.
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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
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.
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公开(公告)号:US11303215B2
公开(公告)日:2022-04-12
申请号:US17137165
申请日:2020-12-29
Applicant: Contemporary Amperex Technology Co., Limited
Inventor: Liansong Wang , Zhimin Dan , Yizhen Hou , Fangjie Zhou , Changjian Liu
Abstract: The present application discloses a system and method for providing a constant power source. The system includes: a main control module configured to receive a wake-up time and send the wake-up time to a timer device; a timer power supply module configured to supply power to the timer device according to electric energy in a high-voltage battery pack; a high-voltage power supply module configured to supply power to a power conversion module according to the electric energy in the high-voltage battery pack; the timer device configured to set a wake-up clock according to the wake-up time, start timing when a battery management system (BMS) enters into sleep, and send a discharge instruction to the high-voltage battery pack when the timing reaches the wake-up time; the power conversion module configured to convert high-voltage electric energy output from the high-voltage battery pack into low-voltage electric energy and supply power to the BMS.
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