Patents by Inventor Dezhong Yang

Dezhong Yang 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).

  • Patent number: 11126424
    Abstract: A power tool system includes a power tool; a battery pack detachably connected to the power tool, and a cloud server capable of wirelessly communicating with the power tool. The power tool includes a wireless communication unit configured to establish a wireless communication link with an external device and a file storage unit coupled to the wireless communication unit and configured to store content data in a preset data structure. The preset data structure includes a packet header configured for information transmission, a packet tail including a check bit, and a data packet body including a data length, a data type, a packet serial number, data content and an electronic serial number. A simple and efficient method of deduplicating data is used to release the memory space of the memory and improve data transmission efficiency.
    Type: Grant
    Filed: April 16, 2020
    Date of Patent: September 21, 2021
    Assignee: Nanjing Chervon Industry Co., Ltd.
    Inventors: Dezhong Yang, Zhao Hu, Dongyue Wang, Yang Wang, Yunfeng Hu
  • Publication number: 20210286612
    Abstract: An electrical device includes a housing, at least one adapter interface to enable one or more battery packs to be detachably mounted to the electrical device, a control module, and a communication module including a wireless communication module and a storage module. The storage module is used for storing an upgrade file from an external device. The upgrade file includes an upgrade program to update the program of the control module. The communication module is configured to receive the upgrade file from the external device through a wireless communication module, store the upgrade file in the storage module, and send the upgrade file to the control module to update the program of the control module if preset conditions are met.
    Type: Application
    Filed: June 1, 2021
    Publication date: September 16, 2021
    Inventors: Dezhong Yang, Zhao Hu, Dongyue Wang, Yang Wang, Yunfeng Hu
  • Patent number: 11095136
    Abstract: A battery pack is detachably connectable to an electric tool or a charger and includes a housing, a cell group, a first voltage monitoring module, a control module, a second voltage monitoring module and a protection module. The cell group includes a plurality of cells electrically connected to each other. The first voltage monitoring module monitors at least one of the voltage of each cell or the total voltage of the cell group. The second voltage monitoring module monitors the voltage of each cell to detect whether the cells are in an overvoltage state. The protection module is electrically connected to the second voltage monitoring module and when the second voltage monitoring module monitors that any one of the cells is in the overvoltage state, cuts off a charging path formed between the battery pack and the charger.
    Type: Grant
    Filed: October 1, 2020
    Date of Patent: August 17, 2021
    Assignee: Nanjing Chervon Industry Co., Ltd.
    Inventors: Zheng Geng, Hehan Liu, Dezhong Yang
  • Patent number: 11095142
    Abstract: A battery pack of a power tool includes a plurality of cells connected in series, a controller, which is configured to detect a charge current and/or a discharge current of the plurality of cells, estimate remaining capacity of the plurality of cells at least base on an integral of the charge current and/or the discharge current of the plurality of cells over time and generate or select a power supply capability parameter for limiting power of the power tool at least base on the remaining capacity of the plurality of cells, and a memory, which is configured to store data related to the remaining capacity of the plurality of cells.
    Type: Grant
    Filed: February 25, 2019
    Date of Patent: August 17, 2021
    Assignee: Nanjing Chervon Industry Co., Ltd.
    Inventors: Zheng Geng, Dezhong Yang
  • Patent number: 11094969
    Abstract: A battery pack includes a housing, a battery cell group accommodated in the housing, a plurality of battery pack connection terminals coupled to the connection terminals of an electrical device, including a battery pack positive power terminal electrically connected to a positive pole of the battery cell group, a battery pack negative power terminal electrically connected to a negative pole of the battery cell group, a first battery pack terminal to transmit a first type of data, and a second battery pack terminal to transmit a second type of data. Also, a data transmission method between the battery pack and the electrical device enables data collection for data analysis while ensuring normal operation of the battery pack and the electrical device.
    Type: Grant
    Filed: May 29, 2020
    Date of Patent: August 17, 2021
    Assignee: Nanjing Chervon Industry Co., Ltd.
    Inventors: Dezhong Yang, Zhao Hu, Dongyue Wang, Yang Wang, Yunfeng Hu
  • Publication number: 20210243946
    Abstract: A riding lawn mower includes a chassis, a power output assembly, a walking assembly, a power supply device, a control module, and an operating apparatus. The operating apparatus includes at least one bracket, an operating lap bar assembly, a pivoting assembly, and a position detecting module. The pivoting assembly mounts the operating lap bar of the operating lap bar assembly on the bracket. The operating lap bar can rotate around different positions in a first direction F1 and/or a second direction F2. The position detecting module includes a magnetic element and a magnetic sensor. The magnetic element is provided on the pivoting assembly or the bracket and the magnet sensor is spaced from the magnetic element so that the magnetic element and the magnetic sensor can generate a relative movement for detecting the position of the operating lap bar in the first direction F1 and/or the second direction F2.
    Type: Application
    Filed: April 27, 2021
    Publication date: August 12, 2021
    Inventors: Dezhong Yang, Jicun Cai, Xiubo Dai, Zhen Wang, Toshinari Yamaoka, Dingming Meng
  • Patent number: 11076529
    Abstract: An intelligent mowing system includes a base station to receive at least one kind of satellite positioning signal sent by a satellite system at a fixed location and an intelligent lawn mower. A mobile station group is mounted on the intelligent lawn mower and communicated with the base station to receive at least one kind of satellite positioning signal sent by the satellite system during a walking process of the intelligent lawn mower. The mobile station group includes at least a first mobile station and a second mobile station arranged at intervals that determines the position of the intelligent lawn mower. A controller is configured to control the intelligent lawn mower to generally walk within a predetermined line width.
    Type: Grant
    Filed: May 15, 2020
    Date of Patent: August 3, 2021
    Assignee: Nanjing Chervon Industry Co., Ltd.
    Inventors: Weipeng Chen, Hongwei Wang, Dezhong Yang, Weibin Kou
  • Patent number: 11064662
    Abstract: A blower has a fan, a motor, an air duct assembly having an air duct passage with an air inlet and an air outlet where the fan rotates to drive the airflow to enter into the air duct passage from the air inlet and to be exposed out of the air outlet, and an electrostatic neutralization apparatus. The electrostatic neutralization apparatus includes a first conductive end and a second conductive end wherein the first conductive end is located within the air duct passage and close to the fan and the second conductive end is also located within the air duct passage. The electrostatic neutralization apparatus of the blower effectively neutralizes electrostatic charges generated by the fan.
    Type: Grant
    Filed: September 13, 2018
    Date of Patent: July 20, 2021
    Assignee: Nanjing Chervon Industry Co., Ltd.
    Inventors: Dezhong Yang, Jifeng Feng, Jianpeng Guo
  • Patent number: 11070164
    Abstract: A power tool has a functional component, a motor, a power supply module, a controller and a drive circuit including a first drive terminal and a second drive terminal respectively electrically connected to a first power terminal and a second power terminal of the power supply module, multiple high-side switches wherein high-side terminals of the high-side switches are respectively electrically connected to the first drive terminal, and multiple low-side switches wherein low-side terminals of the low-side switches are respectively electrically connected to the second drive terminal. The controller is configured to output a first control signal to one high-side switch to place it in an on or off state and output a second control signal to one low-side switch to place it in the other state. The low-side terminal of one high-side switch is connected to the high-side terminal of one low-side switch.
    Type: Grant
    Filed: October 27, 2020
    Date of Patent: July 20, 2021
    Assignee: Nanjing Chervon Industry Co., Ltd.
    Inventors: Hongwei Wang, Dezhong Yang, Yongan Sun
  • Publication number: 20210200226
    Abstract: A self-propelled device system includes a self-propelled device, a boundary wire configured to define a work area of the self-propelled device and a signal transmitting unit electrically connected with the boundary wire configured to generate and send a boundary signal to the boundary wire that generates a magnetic field when flowing through the boundary wire. The self-propelled device has a signal receiving module and a control module. The signal receiving module uses the magnetic field caused by the boundary signal to generate a boundary wire inductive signal and the control module determines that the boundary wire has a wire break when a relevant parameter of the boundary wire inductive signal is less than or equal to a predefined threshold.
    Type: Application
    Filed: December 24, 2020
    Publication date: July 1, 2021
    Inventors: Hongwei Wang, Dezhong Yang
  • Patent number: 11029941
    Abstract: An electrical device includes a housing, at least one adapter interface to enable one or more battery packs to be detachably mounted to the electrical device, a control module, and a communication module including a wireless communication module and a storage module. The storage module is used for storing an upgrade file from an external device. The upgrade file includes an upgrade program to update the program of the control module. The communication module is configured to receive the upgrade file from the external device through a wireless communication module, store the upgrade file in the storage module, and send the upgrade file to the control module to update the program of the control module if preset conditions are met.
    Type: Grant
    Filed: May 29, 2020
    Date of Patent: June 8, 2021
    Assignee: Nanjing Chervon Industry Co., Ltd.
    Inventors: Dezhong Yang, Zhao Hu, Dongyue Wang, Yang Wang, Yunfeng Hu
  • Publication number: 20210143650
    Abstract: A riding-type mower includes a power supply device and the power supply device includes a plurality of battery packs and a power management module. The plurality of battery packs are detachably mounted to the riding-type mower and further configured to supply electric energy to a hand-held electric power tool. The plurality of battery packs each are provide with at least one battery cell group, and each battery cell group includes a plurality of battery cells electrically connected to each other. The power management module is configured to determine whether the plurality of battery packs satisfy a discharge condition and control a battery pack satisfying the discharge condition to discharge when the battery pack satisfies the discharge condition.
    Type: Application
    Filed: January 25, 2021
    Publication date: May 13, 2021
    Inventors: Lei Wang, Dezhong Yang
  • Publication number: 20210112711
    Abstract: A hand push lawn mower includes a body including a cutting blade and an operating device for a user to operate and connected to the body. The body includes a deck, a motor, a height adjustment assembly and a grass baffle. The motor is configured to drive the cutting blade to rotate. The height adjustment assembly is used to adjust the deck to move up and down. The grass baffle is configured to prevent grass clippings from splashing towards the back of the hand push lawn mower. When the height adjustment assembly adjusts the height of the deck, a displacement of the grass baffle in a vertical direction is less than a displacement of the deck in the vertical direction.
    Type: Application
    Filed: December 28, 2020
    Publication date: April 22, 2021
    Inventors: Fangjie Nie, Toshinari Yamaoka, Haishen Xu, Qingsong Sun, Dezhong Yang, Chao Xian
  • Patent number: 10964990
    Abstract: An electrical combination includes a battery pack and a power tool. The battery pack includes two battery pack connectors which are connected with the same electrode of a battery of the battery pack. A circuit of one battery pack connector has a resistance greater than that in another circuit of another battery pack connector. The power tool includes corresponding tool connectors. When the battery pack is connected with the power tool, the power tool is supplied with a small current by the battery pack firstly, and then is supplied with a large current, so the electric spark is eliminated when the terminals of the battery pack contact with the terminals of the power tool.
    Type: Grant
    Filed: September 6, 2019
    Date of Patent: March 30, 2021
    Assignee: Chervon (HK) Limited
    Inventors: Dezhong Yang, Jifeng Feng
  • Patent number: 10923938
    Abstract: A charging device for charging an electric energy storage device includes a power supply circuit connected to a power supply, an alternating current conversion circuit configured to convert a current from the power supply connected to the power supply circuit to a first alternating current with a preset frequency value, a transformer configured to convert the first alternating current to a second alternating current, wherein a voltage value corresponding to the second alternating current being less than a voltage value corresponding to the first alternating current, and a direct current voltage conversion circuit configured to convert the second alternating current to a direct current with a waveform fluctuating in a preset range, so as to charge an electric energy storage device.
    Type: Grant
    Filed: June 21, 2018
    Date of Patent: February 16, 2021
    Assignee: Nanjing Chervon Industry Co., Ltd.
    Inventors: Dezhong Yang, Yingdian Xiang, Hong Zhu, Zhijian Lu
  • Publication number: 20210044248
    Abstract: A power tool has a functional component, a motor, a power supply module, a controller and a drive circuit including a first drive terminal and a second drive terminal respectively electrically connected to a first power terminal and a second power terminal of the power supply module, multiple high-side switches wherein high-side terminals of the high-side switches are respectively electrically connected to the first drive terminal, and multiple low-side switches wherein low-side terminals of the low-side switches are respectively electrically connected to the second drive terminal. The controller is configured to output a first control signal to one high-side switch to place it in an on or off state and output a second control signal to one low-side switch to place it in the other state. The low-side terminal of one high-side switch is connected to the high-side terminal of one low-side switch.
    Type: Application
    Filed: October 27, 2020
    Publication date: February 11, 2021
    Inventors: Hongwei Wang, Dezhong Yang, Yongan Sun
  • Publication number: 20210021144
    Abstract: A battery pack is detachably connectable to an electric tool or a charger and includes a housing, a cell group, a first voltage monitoring module, a control module, a second voltage monitoring module and a protection module. The cell group includes a plurality of cells electrically connected to each other. The first voltage monitoring module monitors at least one of the voltage of each cell or the total voltage of the cell group. The second voltage monitoring module monitors the voltage of each cell to detect whether the cells are in an overvoltage state. The protection module is electrically connected to the second voltage monitoring module and when the second voltage monitoring module monitors that any one of the cells is in the overvoltage state, cuts off a charging path formed between the battery pack and the charger.
    Type: Application
    Filed: October 1, 2020
    Publication date: January 21, 2021
    Inventors: Zheng Geng, Hehan Liu, Dezhong Yang
  • Publication number: 20200412286
    Abstract: A controller of a power tool is configured to, based on a sampled current of a motor of the power tool, output control signals that change with a change of a position of a rotor of the motor to control a drive circuit of the power tool such that an input voltage and/or a current of the motor changes approximately in a sine wave.
    Type: Application
    Filed: September 9, 2020
    Publication date: December 31, 2020
    Inventors: Yanqing Xu, Hongwei Wang, Xiaogang Ding, Tiantian Yin, Dezhong Yang, Xiubo Dai, Wenqi Zhen
  • Publication number: 20200390031
    Abstract: A riding lawn mower includes a chassis, a power output assembly, a walking assembly, a power supply device, a control module, and an operating apparatus. The operating apparatus includes at least one bracket, an operating lap bar assembly, a pivoting assembly, and a position detecting module. The pivoting assembly mounts the operating lap bar of the operating lap bar assembly on the bracket. The operating lap bar can rotate around different positions in a first direction F1 and/or a second direction F2. The position detecting module includes a magnetic element and a magnetic sensor. The magnetic element is provided on the pivoting assembly or the bracket and the magnet sensor is spaced from the magnetic element so that the magnetic element and the magnetic sensor can generate a relative movement for detecting the position of the operating lap bar in the first direction F1 and/or the second direction F2.
    Type: Application
    Filed: August 26, 2020
    Publication date: December 17, 2020
    Inventors: Dezhong Yang, Jicun Cai, Xiubo Dai, Zhen Wang, Toshinari Yamaoka, Dingming Meng
  • Publication number: 20200384664
    Abstract: A power tool includes a function member, a motor, a driving circuit electrically connected to the motor to drive the motor, and a first control module configured to output a first control signal to the driving circuit. The first control module has a first working state and a first failure state. The first control module outputs a first working signal when the first control module is in the first working state, and outputs a first failure signal when the first control module is in the first failure state. A second control module is electrically connected to the first control module to receive the first working signal or the first failure signal from the first control module. The second control module outputs a second control signal to turn off the motor when the second control module receives the first failure signal from the first control module.
    Type: Application
    Filed: June 9, 2020
    Publication date: December 10, 2020
    Inventors: Dezhong Yang, Jifeng Feng, Li Pan