Patents by Inventor Yuancai LIU
Yuancai LIU has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11721995Abstract: 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.Type: GrantFiled: September 28, 2020Date of Patent: August 8, 2023Assignee: SZ DJI TECHNOLOGY CO., LTD.Inventors: Tao Zhao, Juncheng Zhan, Yuancai Liu, Lei Wang, Wentao Wang
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Patent number: 11228200Abstract: 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.Type: GrantFiled: December 5, 2019Date of Patent: January 18, 2022Assignee: SZ DJI TECHNOLOGY CO., LTD.Inventors: Lei Wang, Wentao Wang, Dayang Zheng, Juncheng Zhan, Yuancai Liu
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Publication number: 20210028639Abstract: 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.Type: ApplicationFiled: September 28, 2020Publication date: January 28, 2021Inventors: Tao ZHAO, Juncheng ZHAN, Yuancai LIU, Lei WANG, Wentao WANG
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Publication number: 20200365954Abstract: A method for preheating a battery includes: detecting a trigger event of preheating the battery, the trigger event including a corresponding key being turned on; and in response to detecting the trigger event, controlling a heating member to heat an accommodating space housing the battery until an ambient temperature in the accommodating space satisfies a temperature condition, wherein the heating member is powered by the battery to be preheated.Type: ApplicationFiled: July 27, 2020Publication date: November 19, 2020Inventors: Wentao WANG, Yuancai LIU, Lei WANG, Juncheng ZHAN, Sichao LI
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Patent number: 10797499Abstract: 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.Type: GrantFiled: December 21, 2016Date of Patent: October 6, 2020Assignee: SZ DJI TECHNOLOGY CO., LTD.Inventors: Tao Zhao, Juncheng Zhan, Yuancai Liu, Lei Wang, Wentao Wang
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Patent number: 10763557Abstract: 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.Type: GrantFiled: March 10, 2017Date of Patent: September 1, 2020Assignee: SZ DJI TECHNOLOGY CO., LTD.Inventors: Tao Zhao, Wentao Wang, Lei Wang, Juncheng Zhan, Yuancai Liu
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Patent number: 10734691Abstract: 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.Type: GrantFiled: June 30, 2017Date of Patent: August 4, 2020Assignee: SZ DJI TECHNOLOGY CO., LTD.Inventors: Wentao Wang, Yuancai Liu, Lei Wang, Juncheng Zhan, Sichao Li
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Publication number: 20200238842Abstract: A charger includes a power output interface configured to output a charging signal; a signal interface configured to acquire charging information of a battery, the charging information including whether the battery is a smart battery or a non-smart battery; a balance charging interface configured to perform balance charging control over sets of battery cores of the battery; and a control circuit electrically connected to the power output interface, the signal interface, and the balance charging interface, the control circuit being configured to: in response to the battery being a smart battery, select the signal interface to perform charging control over the battery; and in response to the battery being a non-smart battery, select the balance charging interface to perform charging control over the battery.Type: ApplicationFiled: April 10, 2020Publication date: July 30, 2020Inventors: Yuancai LIU, Lei WANG, Wentao WANG
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Patent number: 10618415Abstract: A charger includes a power output interface configured to output a charging signal, a signal interface configured to acquire charging information of a battery, a balance charging interface configured to perform balance charging control over sets of battery cores of the battery, and a control circuit electrically connected to the power output interface, the signal interface, and the balance charging interface. The control circuit is configured to select the signal interface and/or the balance charging interface to perform charging control over the battery.Type: GrantFiled: October 27, 2017Date of Patent: April 14, 2020Assignee: SZ DJI TECHNOLOGY CO., LTD.Inventors: Yuancai Liu, Lei Wang, Wentao Wang
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Publication number: 20200108940Abstract: 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.Type: ApplicationFiled: December 5, 2019Publication date: April 9, 2020Inventors: Lei WANG, Wentao WANG, Dayang ZHENG, Juncheng ZHAN, Yuancai LIU
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Patent number: 10587128Abstract: 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.Type: GrantFiled: December 29, 2017Date of Patent: March 10, 2020Assignee: SZ DJI TECHNOLOGY CO., LTD.Inventors: Dayang Zheng, Yuancai Liu, Lei Wang, Wentao Wang, Juncheng Zhan
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Patent number: 10505237Abstract: A battery includes a housing including a cell accommodating part, a cell accommodated in the cell accommodating part, and a temperature regulating element configured to regulate an ambient temperature within the cell accommodating part.Type: GrantFiled: January 2, 2018Date of Patent: December 10, 2019Assignee: SZ DJI TECHNOLOGY CO., LTD.Inventors: Tao Zhao, Wentao Wang, Lei Wang, Yuancai Liu
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Patent number: 10501195Abstract: 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.Type: GrantFiled: March 31, 2017Date of Patent: December 10, 2019Assignee: SZ DJI TECHNOLOGY CO., LTD.Inventors: Lei Wang, Wentao Wang, Dayang Zheng, Juncheng Zhan, Yuancai Liu
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Patent number: 10331120Abstract: A remote control device for remotely controlling an unmanned apparatus and a carried object carried by the unmanned apparatus includes a remote control device attitude sensor and a microprocessor. The remote control device attitude sensor is configured to detect a remote control device spatial attitude of the remote control device and output a remote control device spatial attitude signal according to the remote control device spatial attitude. The microprocessor is configured to receive the remote control device spatial attitude signal, calculate an angle change of the remote control device in a remote control device dimension based on the remote control device spatial attitude signal, and generate a carried object control signal for controlling a movement of the carried object in a corresponding dimension based on the angle change of the remote control device. The corresponding dimension corresponds to the remote control device dimension.Type: GrantFiled: November 18, 2016Date of Patent: June 25, 2019Assignee: SZ DJI TECHNOLOGY CO., LTD.Inventor: Yuancai Liu
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Publication number: 20180145380Abstract: A battery includes a housing including a cell accommodating part, a cell accommodated in the cell accommodating part, and a temperature regulating element configured to regulate an ambient temperature within the cell accommodating part.Type: ApplicationFiled: January 2, 2018Publication date: May 24, 2018Inventors: Tao ZHAO, Wentao WANG, Lei WANG, Yuancai LIU
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Publication number: 20180123362Abstract: 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.Type: ApplicationFiled: December 29, 2017Publication date: May 3, 2018Inventors: Dayang ZHENG, Yuancai LIU, Lei WANG, Wentao WANG, Juncheng ZHAN
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Publication number: 20180065493Abstract: A charger includes a power output interface configured to output a charging signal, a signal interface configured to acquire charging information of a battery, a balance charging interface configured to perform balance charging control over sets of battery cores of the battery, and a control circuit electrically connected to the power output interface, the signal interface, and the balance charging interface. The control circuit is configured to select the signal interface and/or the balance charging interface to perform charging control over the battery.Type: ApplicationFiled: October 27, 2017Publication date: March 8, 2018Inventors: Yuancai LIU, Lei WANG, Wentao WANG
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Publication number: 20170301966Abstract: 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.Type: ApplicationFiled: June 30, 2017Publication date: October 19, 2017Inventors: Wentao WANG, Yuancai LIU, Lei WANG, Juncheng ZHAN, Sichao LI
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Publication number: 20170207640Abstract: 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.Type: ApplicationFiled: March 31, 2017Publication date: July 20, 2017Inventors: Lei Wang, Wentao Wang, Dayang Zheng, Yuancai Liu, Juncheng Zhan
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Publication number: 20170203850Abstract: 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.Type: ApplicationFiled: March 31, 2017Publication date: July 20, 2017Inventors: Lei Wang, Wentao Wang, Dayang Zheng, Juncheng Zhan, Yuancai Liu