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公开(公告)号：US10797499B2
公开(公告)日：2020-10-06
申请号：US15387395
申请日：2016-12-21
Applicant: SZ DJI TECHNOLOGY Co., Ltd
Inventor： Tao Zhao , Juncheng Zhan , Yuancai Liu , Lei Wang , Wentao Wang
Abstract: Systems, methods, and devices of managing a battery assembly used to power an object are provided to discharge a battery assembly for a safe and long-term storage. A controlled self-discharge of the battery assembly may be initiated when the power to the object is turned off for a certain length of time or the battery assembly is not in use for a threshold length of time. The controlled self-discharge may be terminated if the battery assembly reaches a threshold voltage value or the battery is in use again during the self-discharge.
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公开(公告)号：US10763557B2
公开(公告)日：2020-09-01
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 , H01M10/613 , H01M10/625 , H01M10/6555 , B64D27/24 , B64C39/02
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.
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公开(公告)号：US11228200B2
公开(公告)日：2022-01-18
申请号：US16704608
申请日：2019-12-05
Applicant: SZ DJI TECHNOLOGY CO., LTD.
Inventor： Lei Wang , Wentao Wang , Dayang Zheng , Juncheng Zhan , Yuancai Liu
Abstract: A hybrid power system comprises a power controller adapted to be in communication with a first power source, a second power source, and a load. The power controller is configured to: control discharging of the first power source without permitting discharging of the second power source to power the load when a power drawn by the load is greater than a predetermined threshold power for a time period; and control discharging of the second power source to power the load when the power drawn by the load is greater than the predetermined threshold power starting from when the time period ends.
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公开(公告)号：US10587128B2
公开(公告)日：2020-03-10
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
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.
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公开(公告)号：US11139511B2
公开(公告)日：2021-10-05
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
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.
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Patent Agency Ranking
公开(公告)号：US10790678B2
公开(公告)日：2020-09-29
申请号：US15433591
申请日：2017-02-15
Applicant: SZ DJI TECHNOLOGY CO., LTD.
Inventor： Dayang Zheng , Lei Wang , Wentao Wang , Juncheng Zhan , Bogao Xu
Abstract: A system for balancing a battery assembly and related methods for making and using same are provided. The system can obtain a status of a battery assembly with a plurality of batteries. One or more of the batteries can be selected based on the obtained status, and the selected batteries can be balanced. The system, for example, can control active balancing of the selected batteries when the battery assembly is in a static state and control selective discharging of the selected batteries when the battery assembly is in a discharging state. When the battery assembly is in a charging state, selective charging of the selected batteries can be controlled. One or more cells that comprise the individual batteries alternatively can be selected for balancing. A protective circuit can help ensure safety of the balancing. Battery balancing can be energy-efficient and time-efficient. The lifetime of the battery assembly can be extended.
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公开(公告)号：US10734691B2
公开(公告)日：2020-08-04
申请号：US15640014
申请日：2017-06-30
Applicant: SZ DJI TECHNOLOGY CO., LTD.
Inventor： Wentao Wang , Yuancai Liu , Lei Wang , Juncheng Zhan , Sichao Li
IPC: H01M10/615 , H01M10/48 , H01M10/44 , H01M10/635 , H01M10/6571 , H01M10/625 , H01M10/0525
Abstract: A method for preheating a battery includes acquiring an ambient temperature of a preheating zone, determining if the ambient temperature of the preheating zone satisfies a preset temperature condition, and, if the ambient temperature does not satisfy the preset temperature condition, controlling heating of the preheating zone until the ambient temperature satisfies the temperature condition.
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公开(公告)号：US11721995B2
公开(公告)日：2023-08-08
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
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 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.
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公开(公告)号：US20170207640A1
公开(公告)日：2017-07-20
申请号：US15476662
申请日：2017-03-31
Applicant: SZ DJI Technology Co., Ltd.
Inventor： Lei Wang , Wentao Wang , Dayang Zheng , Yuancai Liu , Juncheng Zhan
IPC: H02J7/00
Abstract: Methods and systems for forming and changing electrical connections between a plurality of batteries (1041˜2046, 2041˜2046, 3041˜3046, 6041, 6043˜6046, 8041, 8043, 8044, 8046) within a battery assembly (100, 200, 300, 600, 800) are provided to balance the battery properties. The batteries (1041˜2046, 2041˜2046, 3041˜3046, 6041, 6043˜6046, 8041, 8043, 8044, 8046) having similar properties may be grouped into one battery pack, and an adjustment to existence of electrical connections between the plurality of batteries (1041˜2046, 2041˜2046, 3041˜3046, 6041, 6043˜6046, 8041, 8043, 8044, 8046) may be enabled while the battery assembly (100, 200, 300, 600, 800) is powering the object.
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公开(公告)号：US20170203850A1
公开(公告)日：2017-07-20
申请号：US15476583
申请日：2017-03-31
Applicant: SZ DJI Technology Co., Ltd.
Inventor： Lei Wang , Wentao Wang , Dayang Zheng , Juncheng Zhan , Yuancai Liu
CPC classification number: B64D27/24 , B64C39/024 , B64C2201/027 , B64C2201/042 , B64C2201/108 , B64D41/00 , B64D2041/005 , B64D2211/00 , B64D2221/00 , H02J7/34 , H02M3/156
Abstract: Systems, methods, and devices are provided herein for improving the power performance of vehicle. A hybrid power system may comprise a power controller adapted to be in communication with a first power source, a second power source, and a load. The power controller may be configured to detect whether a current drawn by the load exceeds a predetermined threshold, control discharging of the first power source without permitting discharging of the second power source to power the load when the current drawn by the load is less than the predetermined threshold current, and control discharging of the first power source and the second power source to power the load when the current drawn by the load is greater than the predetermined threshold current.
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