公开(公告)号：US20240235231A1

公开(公告)日：2024-07-11

申请号：US18366647

申请日：2023-08-07

Applicant: SZ DJI TECHNOLOGY CO., LTD.

Inventor： Tao ZHAO ,  Juncheng ZHAN ,  Yuancai LIU ,  Lei WANG ,  Wentao WANG

IPC: H02J7/00 ,  B64C39/02 ,  H01M10/44 ,  H01M10/48 ,  H02H7/18 ,  B64U10/00

CPC classification number: H02J7/0063 ,  B64C39/024 ,  H01M10/44 ,  H01M10/48 ,  H02H7/18 ,  H02J7/0029 ,  H02J7/007182 ,  B64U10/00 ,  H01M2220/20 ,  H02J7/0016 ,  H02J7/0025 ,  H02J7/00714

Abstract: A method of discharging a battery assembly includes detecting, with aid of a timer, when the battery assembly is not in use for a threshold length of time, where the battery assembly is configured to power at least a part of a movable object. The method further includes initiating a controlled self-discharge of the battery assembly when the battery assembly is not in use for the threshold length of time; and during the controlled self-discharge of the battery assembly, in response to detecting that the battery assembly is activated or detecting that the movable object is powered on or detecting that current is flowing from the battery assembly, terminating the controlled self-discharge of the battery assembly regardless whether the battery assembly voltage drops to a threshold voltage value.

公开(公告)号：US20210028639A1

公开(公告)日：2021-01-28

申请号：US17035178

申请日：2020-09-28

Applicant: SZ DJI TECHNOLOGY CO., LTD.

Inventor： Tao ZHAO ,  Juncheng ZHAN ,  Yuancai LIU ,  Lei WANG ,  Wentao WANG

IPC: H02J7/00 ,  H02H7/18 ,  H01M10/48 ,  H01M10/44 ,  B64C39/02

Abstract: A method of discharging a battery assembly used to power at least part of an object includes detecting when power to the object is turned off, detecting, with aid of a timer, an amount of time elapsed since the power to the object is turned off, and initiating a controlled self-discharge of the battery assembly when the amount of time exceeds a threshold length of time. The controlled self-discharge of the battery assembly is performed by a self-discharging circuit electrically coupled to the battery assembly.

公开(公告)号：US20200335806A1

公开(公告)日：2020-10-22

申请号：US16916753

申请日：2020-06-30

Applicant: SZ DJI TECHNOLOGY CO., LTD.

Inventor： Dayang ZHENG ,  Lei WANG ,  Wentao WANG ,  Juncheng ZHAN ,  Bogao XU

IPC: H01M8/0656 ,  H01M8/04082 ,  H01M8/04746 ,  H01M8/0662 ,  H01M8/04119 ,  B64C39/02

Abstract: An energy delivery system includes: a solar cell configured to receive solar energy and generate electrical energy; an electrolysis module configured to generate a first fuel from water; a fuel cell configured to generate electricity by reacting the first fuel with a second fuel through an electrochemical reaction, wherein the electricity is used to power a movable platform; and a controller configured to generate instructions for the solar cell to provide the electrical energy to one or more of: (1) the electrolysis module to effect operation of the electrolysis module, and (2) the movable platform.

公开(公告)号：US20180145377A1

公开(公告)日：2018-05-24

申请号：US15858869

申请日：2017-12-29

Applicant: SZ DJI TECHNOLOGY CO., LTD.

Inventor： Dayang ZHENG ,  Juncheng ZHAN ,  Lei WANG ,  Wentao WANG ,  Baigao XU

IPC: H01M10/42 ,  G05D1/00 ,  B64C39/02 ,  G05D1/10 ,  H02J7/00

CPC classification number: H01M10/4264 ,  B64C39/024 ,  B64C2201/042 ,  B64C2201/14 ,  G05D1/0088 ,  G05D1/101 ,  H01M2/34 ,  H01M10/425 ,  H01M10/482 ,  H01M10/486 ,  H01M10/488 ,  H01M2010/4271 ,  H01M2010/4278 ,  H01M2200/00 ,  H01M2220/20 ,  H02J7/0021 ,  H02J7/0031 ,  H02J7/34

Abstract: A battery includes a first cell unit, a first control circuit electrically connected with the first cell unit, a second cell unit connected with the first cell unit in parallel, and a second control circuit electrically connected with the second cell unit. The first control circuit is configured to disconnect an electrical connection between the first cell unit and a power output terminal of the first control circuit in response to a failure of the first cell unit. The second control circuit is configured to disconnect an electrical connection between the second cell unit and a power output terminal of the second control circuit in response to a failure of the second cell unit.

公开(公告)号：US20200176828A1

公开(公告)日：2020-06-04

申请号：US16783926

申请日：2020-02-06

Applicant: SZ DJI TECHNOLOGY CO., LTD.

Inventor： Dayang ZHENG ,  Juncheng ZHAN ,  Lei WANG ,  Wentao WANG ,  Baigao XU

IPC: H01M10/42 ,  H02J7/34 ,  H01M2/34 ,  H01M10/48 ,  H02J7/00 ,  B64C39/02 ,  G05D1/00 ,  G05D1/10

Abstract: A method is provided for managing an unmanned aerial vehicle (UAV). The UAV includes a first cell unit and a second cell unit connected in parallel. The method includes: detecting, by a first control circuit, whether a failure occurs in the first cell unit; detecting, by a second control circuit, whether a failure occurs in the second cell unit; establishing a communication between the first control circuit and the second control circuit; and in response to detecting a signal indicating that a failure occurs in the first cell or the second cell from the first control circuit or the second control circuit, reducing an output power of a propulsion device of the UAV.

公开(公告)号：US20180123183A1

公开(公告)日：2018-05-03

申请号：US15858743

申请日：2017-12-29

Applicant: SZ DJI TECHNOLOGY CO., LTD.

Inventor： Dayang ZHENG ,  Lei WANG ,  Wentao WANG ,  Juncheng ZHAN ,  Bogao XU

IPC: H01M10/42 ,  H01M10/48 ,  H01M2/02

CPC classification number: H01M10/4257 ,  H01M2/02 ,  H01M10/425 ,  H01M10/48 ,  H01M2010/4271

Abstract: A control circuit for controlling a battery core includes a power input terminal electrically connected to the battery core, a ferromagnetic random access memory having a dynamic mode and a non-volatile mode, and a control unit electrically connected with the ferromagnetic random access memory and the power input terminal. The control unit is configured to acquire state information of the battery core and store the state information to the ferromagnetic random access memory, and switch on or off an electrical connection between the power input terminal and the battery core to switch the ferromagnetic random access memory to the dynamic mode or the non-volatile mode.

公开(公告)号：US20170187082A1

公开(公告)日：2017-06-29

申请号：US15455824

申请日：2017-03-10

Applicant: SZ DJI TECHNOLOGY CO., LTD.

Inventor： Tao ZHAO ,  Wentao WANG ,  Lei WANG ,  Juncheng ZHAN ,  Yuancai LIU

IPC: H01M10/655 ,  B64D27/24 ,  B64C39/02 ,  H01M10/613

Abstract: A battery, a thermal management device of the battery, and an unmanned aerial vehicle having the battery are provided. The thermal management device comprises a heat conducting housing having a receiving cavity and configured to divide the receiving cavity into a plurality of cell compartments for receiving cells, and a heat conducting shelf mounted within the receiving cavity and configured to be in contact with at least one of the cells to conduct heat generated by the at least one of the cells. The heat conducting shelf is thermally connected with an inner wall of the receiving cavity and configured to conduct heat in the heat conducting shelf to the heat conducting housing.

公开(公告)号：US20210006078A1

公开(公告)日：2021-01-07

申请号：US17023157

申请日：2020-09-16

Applicant: SZ DJI TECHNOLOGY CO., LTD.

Inventor： Dayang ZHENG ,  Lei WANG ,  Wentao WANG ,  Juncheng ZHAN ,  Bogao XU

IPC: H02J7/00

Abstract: A method for balancing a battery assembly includes selecting, from a plurality of batteries of the battery assembly in a charging state, one or more batteries based on a status of the plurality of batteries; and controlling charging of the selected one or more batteries for balancing the plurality of batteries. Battery balancing can be energy-efficient and time-efficient. The lifetime of the battery assembly can be extended.

公开(公告)号：US20180275202A1

公开(公告)日：2018-09-27

申请号：US15995893

申请日：2018-06-01

Applicant: SZ DJI TECHNOLOGY CO., LTD.

Inventor： Juncheng ZHAN ,  Lei WANG ,  Wentao WANG ,  Dayang ZHENG ,  Hao LUO

IPC: G01R31/36 ,  H01M10/42

CPC classification number: G01R31/392 ,  G01R31/3835 ,  G01R31/3842 ,  G01R31/389 ,  G01R31/396 ,  H01M10/42

Abstract: A method for detecting an operational status of a battery including a plurality of cells includes obtaining static voltages and dynamic voltages of the cells and determining the operational status of the battery based on the static voltages and dynamic voltages.

公开(公告)号：US20180123362A1

公开(公告)日：2018-05-03

申请号：US15858951

申请日：2017-12-29

Applicant: SZ DJI TECHNOLOGY CO., LTD.

Inventor： Dayang ZHENG ,  Yuancai LIU ,  Lei WANG ,  Wentao WANG ,  Juncheng ZHAN

IPC: H02J7/00

CPC classification number: H02J7/0021 ,  H02J7/0013

Abstract: A charging control circuit includes a charging unit, a plurality of power output terminals configured to connect with a plurality of rechargeable batteries, respectively, a plurality of switch units each connected between the charging unit and one of the plurality of power output terminals, and a control unit electrically connected with the switch units. The control unit is configured to switch to a first charging mode or a second charging mode, and output, to the switch units, a switch signal corresponding to the first charging mode or the second charging mode. The switch signal causes the switch units to switch on or off electrical connections between the charging unit and the plurality of power output terminals.