公开(公告)号：US20240258802A1

公开(公告)日：2024-08-01

申请号：US18431154

申请日：2024-02-02

Applicant: Nanjing Chervon Industry Co., Ltd.

Inventor： Lei Wang ,  Dezhong Yang

IPC: H02J7/00 ,  A01D34/00 ,  A01D69/02 ,  A01D101/00

CPC classification number: H02J7/0016 ,  A01D34/006 ,  A01D69/02 ,  H02J7/00304 ,  H02J7/00306 ,  A01D2101/00

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.

公开(公告)号：US20240208026A1

公开(公告)日：2024-06-27

申请号：US18602181

申请日：2024-03-12

Applicant: Nanjing Chervon Industry Co., Ltd.

Inventor： Dezhong Yang

IPC: B25F5/00 ,  H01G11/74 ,  H02J7/00 ,  H02J7/34

CPC classification number: B25F5/00 ,  H02J7/0013 ,  H02J7/0045 ,  H02J7/345 ,  H01G11/74 ,  H02J2207/50 ,  H02J2310/22

Abstract: An energy supply device includes a housing detachably connected to the power tool in a mating manner and supported by the power tool; multiple cells supported by the housing of the energy supply device; a charging terminal assembly configured to be electrically connected to a charging apparatus to charge the energy supply device; and a discharge terminal assembly configured to be electrically connected to the power tool to provide electrical energy for the power tool. A charge rate of the energy supply device is greater than or equal to 6 C.

公开(公告)号：US11999240B2

公开(公告)日：2024-06-04

申请号：US17556049

申请日：2021-12-20

Applicant: Nanjing Chervon Industry Co., Ltd.

Inventor： Dezhong Yang ,  Xiubo Dai ,  Lei Wang ,  Wenqi Zhen

IPC: B60L15/20 ,  A01D34/00 ,  A01D69/02 ,  H02P21/12 ,  H02P21/18 ,  H02P21/22 ,  A01D34/66 ,  A01D34/78 ,  A01D101/00

CPC classification number: B60L15/20 ,  A01D34/006 ,  A01D69/02 ,  H02P21/12 ,  H02P21/18 ,  H02P21/22 ,  A01D34/66 ,  A01D34/78 ,  A01D2101/00 ,  B60L2240/429 ,  B60L2240/461

Abstract: A riding lawn mower includes a running assembly, a power output assembly, a power supply device, a driver circuit, an operating device, and a control module. The running assembly includes running wheels and a first motor for driving the running wheels. The operating device is configured to set at least one of target torque or a target rotational speed of the first motor. The control module is configured to output a control signal to the driver circuit to make an input current or an input voltage of the first motor vary with a rotor position of the first motor and make an actual torque of the first motor reach or basically reach the target torque within a preset time.

公开(公告)号：US20230259138A1

公开(公告)日：2023-08-17

申请号：US18301774

申请日：2023-04-17

Applicant: Nanjing Chervon Industry Co., Ltd.

Inventor： Weipeng Chen ,  Dezhong Yang

IPC: G05D1/02 ,  G06V10/80 ,  A01D34/00

CPC classification number: G05D1/0246 ,  G06V10/80 ,  G05D1/027 ,  A01D34/008 ,  G05D2201/0208

Abstract: A smart mower includes a camera for collecting image data of the environment around the smart mower; an inertial measurement unit (IMU) for detecting pose data of the smart mower; a memory at least used for storing an application program for controlling the smart mower to work or travel; and a processor for calling the application program, fusing the image data collected by the camera and the pose data acquired by the IMU, performing simultaneous localization and mapping (SLAM) of the smart mower, and generating a navigation or mowing action instruction.

公开(公告)号：US20230225252A1

公开(公告)日：2023-07-20

申请号：US18185502

申请日：2023-03-17

Applicant: Nanjing Chervon Industry Co., Ltd.

Inventor： Qian Liu ,  Toshinari Yamaoka ,  Zhen Wang ,  Fangjie Nie ,  Dezhong Yang ,  Yangzi Liu ,  Li Li ,  Ju Li ,  Changhai Lu

IPC: A01D69/02 ,  A01D34/78 ,  A01D34/64

CPC classification number: A01D69/02 ,  A01D34/78 ,  A01D34/64 ,  A01D2101/00

Abstract: An outdoor moving device includes a main body, a first energy storage device, a second energy storage device, and a connection assembly. The first energy storage device is capable of supplying power to the outdoor moving device and includes at least one first energy storage unit. The second energy storage device is capable of supplying power to the outdoor moving device and includes at least one second energy storage unit. The connection assembly is used for mounting the second energy storage device to the main body. The first energy storage device is detachably mounted to the main body, the first energy storage device is detachable from the main body to supply power to another power tool, the first energy storage unit includes a first positive electrode made of a first material, and the second energy storage unit includes a second positive electrode made of a second material.

公开(公告)号：US20230208241A1

公开(公告)日：2023-06-29

申请号：US18078472

申请日：2022-12-09

Applicant: Nanjing Chervon Industry Co., Ltd.

Inventor： Qian Xu ,  Dezhong Yang ,  Chenglong Hu ,  Han Wang

IPC: H02K3/52 ,  H02K7/14 ,  H02K1/14

CPC classification number: H02K3/522 ,  H02K7/145 ,  H02K1/148

Abstract: A handheld power tool includes a housing and an electric motor. The housing is formed with a grip for a user to hold. The electric motor is disposed in the housing and used for driving a functional accessory to implement a function of the handheld power tool, where output power of the electric motor is greater than or equal to 120 W and less than or equal to 4500 W. The electric motor includes at least a stator, a rotor, and multiple coil windings disposed on the stator. A cross-section of each of the multiple coil windings is non-circular, and a slot fill factor of the electric motor is greater than or equal to 40%.

公开(公告)号：US11366655B2

公开(公告)日：2022-06-21

申请号：US16844563

申请日：2020-04-09

Applicant: Nanjing Chervon Industry Co., Ltd.

Inventor： Dezhong Yang ,  Zhao Hu ,  Dongyue Wang ,  Yang Wang ,  Yunfeng Hu

IPC: G06F8/654 ,  A01D34/00 ,  H04L67/125 ,  H04W4/70 ,  H04L9/40 ,  H04L67/00 ,  G06K17/00 ,  G06F9/4401 ,  H04W12/06

Abstract: A power tool system includes a power tool and a cloud sever configured to receive an upgrading file for upgrading the power tool. The power tool is adapted for wireless communication with the cloud server and includes a motor, a driving module for driving the motor, a control module for outputting a control signal to the driving module, and an IoT module for establishing a wireless communication link between the power tool and the cloud server. The IoT module, the driving module and control module share a bus, and the upgrading file is simultaneously distributed to the control module and/or the driving module through the bus.

公开(公告)号：US20220111737A1

公开(公告)日：2022-04-14

申请号：US17556049

申请日：2021-12-20

Applicant: Nanjing Chervon Industry Co., Ltd.

Inventor： Dezhong Yang ,  Xiubo Dai ,  Lei Wang ,  Wenqi Zhen

IPC: B60L15/20 ,  A01D34/00 ,  A01D69/02 ,  H02P21/12 ,  H02P21/18 ,  H02P21/22

Abstract: A riding lawn mower includes a running assembly, a power output assembly, a power supply device, a driver circuit, an operating device, and a control module. The running assembly includes running wheels and a first motor for driving the running wheels. The operating device is configured to set at least one of target torque or a target rotational speed of the first motor. The control module is configured to output a control signal to the driver circuit to make an input current or an input voltage of the first motor vary with a rotor position of the first motor and make an actual torque of the first motor reach or basically reach the target torque within a preset time.

公开(公告)号：US11095142B2

公开(公告)日：2021-08-17

申请号：US16284480

申请日：2019-02-25

Applicant: Nanjing Chervon Industry Co., Ltd.

Inventor： Zheng Geng ,  Dezhong Yang

IPC: H02J7/00 ,  H01M10/48 ,  H02J50/80 ,  B25F5/00

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.

公开(公告)号：US11064662B2

公开(公告)日：2021-07-20

申请号：US16130523

申请日：2018-09-13

Applicant: Nanjing Chervon Industry Co., Ltd.

Inventor： Dezhong Yang ,  Jifeng Feng ,  Jianpeng Guo

IPC: A01G20/47

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.