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21.发明申请公开(公告)号：US20210111598A1
公开(公告)日：2021-04-15
申请号：US17017800
申请日：2020-09-11
Applicant: Jing-Jin Electric Technologies Co., Ltd.
Inventor： Ping Yu , Yixue Su , Yi Cheng , Haibin Wang , Baojiang Li
Abstract: The present disclosure discloses an electric-machine stator lamination, an electric-machine stator iron core and an electric machine, which effectively solves the technical problem in the prior art that electric machines have high NVHs. The yoke of the electric-machine stator lamination is circumferentially provided with a plurality of axial tunnels, and the tunnels are empty or are filled with a damping medium. The electric-machine stator iron core is formed by laminating a plurality of the electric-machine stator laminations or is integrally manufactured. The electric machine includes an electric-machine housing and the electric-machine stator iron core, the outer circumference of the electric-machine stator iron core and an inner wall of the electric-machine housing have gaps therebetween, and the gaps are empty or are filled with a damping medium. The structures in which the gaps/tunnels are empty or the gaps/tunnels are filled with a damping medium can weaken the vibration energy generated by the stator to the electric-machine housing, increasing the damping coefficient of the electric-machine housing, reduces the response amplitude/frequency of the electric-machine housing, weaken the paths of the vibration/noise transmission, and reduce the response amplitudes, thereby inhibiting vibration and noise, to effectively reduce the overall NVH level.
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公开(公告)号：US10944349B2
公开(公告)日：2021-03-09
申请号：US16311889
申请日：2017-09-08
Applicant: JING-JIN ELECTRIC TECHNOLOGIES CO., LTD.
Inventor： Zifu Wang
IPC: H02P27/04 , H02P23/28 , H02M7/5387
Abstract: The present disclosure discloses a multi-inverter electric motor controller, which solves the technical problem that the existing inverter with silicon-based devices cannot accurately modulate high-frequency currents. The multi-inverter electric motor controller comprises a primary inverter and one or more secondary inverters, where the primary inverter and the secondary inverters connect in parallel to a same electrical motor, the primary inverter employs silicon-material power electronic devices, the secondary inverters employ wide-bandgap semiconductor power electronic devices, and the switching frequency of the primary inverter is less than the switching frequencies of the secondary inverters. According to the present disclosure, the existing inverter with silicon-based devices and the inverters with wide-bandgap semiconductor devices are connected in parallel, and can complete the fine control of the harmonic waves of high-frequency currents.
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公开(公告)号：US20210036575A1
公开(公告)日：2021-02-04
申请号：US15733636
申请日：2018-11-06
Applicant: Jing-Jin Electric Technologies Co., Ltd.
Inventor： Zhengqiang PEI , Ping YU , Haitao JIN , Pengfei LIU
Abstract: The present disclosure relates to the field of shaft sealing, and particularly relates to a sealing structure of an electric-machine-shaft extension end. The sealing structure of an electric-machine-shaft extension end includes an electric-machine end cap and an electric-machine-shaft extension end, the electric-machine-shaft extension end is mounted to the electric-machine end cap via a bearing, a double-oil-seal structure is provided between the electric-machine end cap and the electric-machine-shaft extension end, the double-oil-seal structure includes an oil-seal seat that is connected to the electric-machine end cap and an outer-side oil seal and an inner-side oil seal that are provided inside the oil-seal seat, the outer-side oil seal and the inner-side oil seal are provided face to face, and are interference-fitted to the oil-seal seat, and an oil storing chamber and an oil-seal spacer ring contained inside the oil storing chamber are provided between the outer-side oil seal and the inner-side oil seal.
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公开(公告)号：US20210021150A1
公开(公告)日：2021-01-21
申请号：US17040024
申请日：2018-11-01
Applicant: Jing-Jin Electric Technologies Co., Ltd.
Inventor： Fuxiang WAN , Dongping GU , Shuanglai DONG , Gabriel GALLEGOS
Abstract: The present disclosure provides an electric-power supplying device, wherein the device includes: an isolation driving unit, including a high-voltage-side winding and a low-voltage-side winding, configured to transform a high-voltage input from a high-voltage power supply into a low-voltage output; a high-voltage inputting unit, including a first switch part that is connected in series to the high-voltage-side winding of the isolation driving unit; an output controlling unit, including a first terminal that is connected to the low-voltage-side winding of the isolation driving unit, a second terminal for receiving an output enabling signal from external, and a third terminal for outputting a low-voltage power-supply electric power when the output enabling signal is high; a switch regulating unit, configured to output a switch regulating signal to the first switch part of the high-voltage inputting unit; a high-voltage starting-up unit, including a first end that is connected to the high-voltage power supply, and a second end that is connected to the switch regulating unit, configured to supply a starting-up voltage to the switch regulating unit; and an auxiliary-power-supply unit, including a first end that is coupled to the low-voltage-side winding of the isolation driving unit, and a second end that is connected to the switch regulating unit, configured to supply an electric power to the switch regulating unit.
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公开(公告)号：US20200350903A1
公开(公告)日：2020-11-05
申请号：US16963632
申请日：2019-03-01
Applicant: JING-JIN ELECTRIC TECHNOLOGIES CO.,LTD.
Inventor： Dongping Gu , Fuxiang Wan , Renjun Dong
IPC: H03K17/082 , H02P29/024 , H03F3/26
Abstract: The present disclosure discloses an IGBT driving circuit for an electric-motor controller and an electric-motor controller. The IGBT driving circuit includes: a function safety circuit provided on a driver board of the electric-motor controller, and a detection feedback circuit and a pulse-width-modulation (PWM) buffer circuit that are connected to the function safety circuit. The detection feedback circuit is configured to detect an IGBT module of the electric-motor controller, and when a specified malfunction of the IGBT module is detected, send a specified-malfunction signal to the function safety circuit. The function safety circuit is configured to judge according to a preset malfunction treating rule and the received specified-malfunction signal, and then output a corresponding controlling signal to the PWM buffer circuit. The PWM buffer circuit is configured to generate according to the corresponding controlling signal a PWM signal that drives the IGBT module, to control ON/OFF of the IGBT module to protect the IGBT module. The technical solutions of the present application have multiple functions of protection, which improves the stability and the safety of the IGBT, and has quick action and timely protection.
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Patent Agency Ranking
公开(公告)号：US10533639B2
公开(公告)日：2020-01-14
申请号：US15576719
申请日：2016-04-22
Applicant: Jing-Jin Electric Technologies Co., Ltd.
Abstract: An automatic transmission comprises a double-contrate-tooth combined fluted disc (120) and a two stage transmission ordinary gear train. The gear shifting mechanism of the transmission is the double-contrate-tooth combined fluted disc (120), which has double contrate teeth, namely, left contrate teeth and right contrate teeth. By the axial moving of the double-contrate-tooth combined fluted disc (120) on the transmission output shaft, its left contrate teeth and right contrate teeth respectively engage with the contrate teeth of the first gear and the second gear reduction gears, to realize the second shift position and the first shift position, and when it engages with neither of them, the transmission is in the neutral shift position. The left contrate teeth and the right contrate teeth are individually independent or integrally assembled structures. Compared with the traditional AMT, the transmission does not need a synchronizer; therefore, the structure is simple, the reliability is increased, the gear shift duration is shortened, the shifting shock is relatively small, the manufacturing cost is low, and it is easy to realize industrialization. The transmission has simple arrangement of gears, short axial dimension, small weight, and occupies small room, and meets the development trend of light weighting and fuel saving.
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公开(公告)号：US20190393819A1
公开(公告)日：2019-12-26
申请号：US16479456
申请日：2017-12-12
Applicant: JING-JIN ELECTRIC TECHNOLOGIES CO., LTD.
Abstract: The present disclosure discloses a method for measuring an initial position angle of a rotor of an electric machine, which solves the technical problem in the prior art that the requirement on the measurement conditions of the initial position angle of the rotor of the electric machine is high and the actual operation is not easy. The method comprises: Step 1, supplying an electric current i to an electric machine to be measured to cause the electric machine to run; Step 2, when the electric machine is running, reducing the electric current i to be zero; Step 3, measuring voltages of a d-axis and a q-axis of a stator of the electric machine at the moment, respectively as ud and uq; and Step 4, according to a trigonometric function relation between ud and uq, calculating to obtain an initial position angle deviation θerr of the rotor of the electric machine.
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公开(公告)号：US20190322166A1
公开(公告)日：2019-10-24
申请号：US16349723
申请日：2017-01-20
Applicant: Jing-Jin Electric Technologies Co., Ltd.
Abstract: The disclosure discloses a coaxial propulsion system with multiple electric motors, comprising a housing, two or more electric motors being provided in the housing, wherein the electric motors share one common shaft. Electric motor is a permanent-magnet synchronous motor, an asynchronous motor or a switched reluctance motor, and of different efficiency maps. The disclosure can improve the power density and system efficiency of propulsion system while maintaining high performance output, to enhance the integration level, and reduce size, weight and cost.
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公开(公告)号：US20180135730A1
公开(公告)日：2018-05-17
申请号：US15576719
申请日：2016-04-22
Applicant: Jing-Jin Electric Technologies Co., Ltd.
IPC: F16H3/32 , F16H57/023 , F16H61/28 , F16H63/32 , F16H3/12
Abstract: An automatic transmission comprises a double-contrate-tooth combined fluted disc (120) and a two stage transmission ordinary gear train. The gear shifting mechanism of the transmission is the double-contrate-tooth combined fluted disc (120), which has double contrate teeth, namely, left contrate teeth and right contrate teeth. By the axial moving of the double-contrate-tooth combined fluted disc (120) on the transmission output shaft, its left contrate teeth and right contrate teeth respectively engage with the contrate teeth of the first gear and the second gear reduction gears, to realize the second shift position and the first shift position, and when it engages with neither of them, the transmission is in the neutral shift position. The left contrate teeth and the right contrate teeth are individually independent or integrally assembled structures. Compared with the traditional AMT, the transmission does not need a synchronizer; therefore, the structure is simple, the reliability is increased, the gear shift duration is shortened, the shifting shock is relatively small, the manufacturing cost is low, and it is easy to realize industrialization. The transmission has simple arrangement of gears, short axial dimension, small weight, and occupies small room, and meets the development trend of light weighting and fuel saving.
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30.发明申请公开(公告)号：US20250102059A1
公开(公告)日：2025-03-27
申请号：US18294667
申请日：2022-05-16
Applicant: Jing-Jin Electric Technologies Co., Ltd.
Inventor： Jianwen LI , Yang LIU , Fayu PAN
IPC: F16H57/04
Abstract: A cooling and lubrication device of an electric drive assembly and an electric drive assembly are disclosed. The cooling and lubrication device includes an oil pumping unit, an oil pumping passage, and an oil returning passage. Outlets of oil distribution passages correspond to parts to be cooled and parts to be lubricated inside the motor housing, as well as parts to be cooled and parts to be lubricated. The oil pumping unit pumps the lubricating oil inside the first housing into the oil pumping passage, and transfers the lubricating oil to the parts to be cooled and the parts to be lubricated. The oil returning passage allows the lubricating oil inside the second housing to flow back into the first housing. This cooling and lubrication device can achieve active and directional cooling and lubrication of the parts to be cooled and the parts to be lubricated.
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