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公开(公告)号：US20190291584A1
公开(公告)日：2019-09-26
申请号：US16335400
申请日：2017-02-28
Applicant: BYD COMPANY LIMITED
Inventor： Lin REN , Daolin LI , Wengang LUO
Abstract: This disclosure discloses a braking-recovery system and method for a train, and a train. The system includes: a traction network, a train, and an energy storage power station. The energy storage power station is connected to the traction network, the energy storage power station includes a second controller, and the second controller controls the energy storage power station according to the voltage of the traction network to perform charging or discharging. The train includes: an electric brake; a battery; a distributor, connected to the electric brake, where there is a node between the distributor and the electric brake; a bidirectional DC/DC converter, where one end of the bidirectional DC/DC converter is connected to the battery, and another end of the bidirectional DC/DC converter is connected to the node; and a first controller, used to control, when the train is braked, the distributor and the bidirectional DC/DC converter to feed back braking electric energy of the train to the traction network, and control the bidirectional DC/DC converter according to a voltage of the traction network to absorb the braking electric energy of the train by using the battery.
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公开(公告)号：US20190276056A1
公开(公告)日：2019-09-12
申请号：US16335074
申请日：2017-02-28
Applicant: BYD COMPANY LIMITED
Inventor： Lin REN , Daolin LI , Zhicheng TAN
Abstract: A traction mechanism, a bogie assembly and a straddle-type monorail vehicle are disclosed. The traction mechanism comprises: a traction component, comprising a transmission shaft and a traction connecting rod, the transmission shaft and the traction connecting rod being connected, the transmission shaft being suitable to be rotatably connected to a vehicle body, and the traction connecting rod being suitable to be hinged to a bogie frame; and a traction crank, both ends of the traction crank being suitable to be respectively hinged to the bogie frame and the vehicle body. The traction mechanism of the present disclosure has a simple and compact structure, and a transmission path of a traction force is short. The traction mechanism is convenient to assemble and disassemble, occupies a small space, is wide in usage range, can be used for low-floor and high-floor vehicles, and is also applicable to a single-axle bogie, a double-axle bogie and a multi-axle bogie.
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公开(公告)号：US20220340107A1
公开(公告)日：2022-10-27
申请号：US17639253
申请日：2020-08-27
Applicant: BYD COMPANY LIMITED
Abstract: A braking method for a vehicle is provided. The method includes the following steps: obtaining a first state information of the vehicle, where the first state information includes a vehicle mass and a deceleration required by braking; calculating a braking torque required by the vehicle according to the first state information, and controlling an output of an electric braking torque according to the braking torque required by the vehicle; obtaining a current gradient and a current vehicle speed of the vehicle; and determining whether to control the vehicle to unload the electric braking torque, and whether to control the vehicle to apply a mechanical braking torque according to the current vehicle speed, the braking torque required by the vehicle, the deceleration required by braking, and the current gradient. A braking device for a vehicle and a vehicle are further provided.
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公开(公告)号：US20220081012A1
公开(公告)日：2022-03-17
申请号：US16335032
申请日：2017-02-28
Applicant: BYD COMPANY LIMITED
Inventor： Lin REN , Daolin LI , Zhicheng TAN
Abstract: A traction mechanism, a bogie assembly and a straddle-type monorail vehicle are disclosed. The traction mechanism comprises: a traction component, comprising a traction connecting rod, a first crank and a transmission shaft, the traction connecting rod being suitable to be hinged to a bogie frame, a first end of the first crank being hinged to the traction connecting rod, a second end of the first crank being fixedly connected to the transmission shaft, and the transmission shaft being suitable to be rotatably connected to a vehicle body; and a traction crank, both ends of the traction crank being suitable to be respectively hinged to the bogie frame and the vehicle body, wherein the first end of the first crank is away from the traction crank. The traction mechanism of the present disclosure has a simple and compact structure, and a transmission path of a traction force is short. The traction mechanism is convenient to assemble and disassemble, occupies a small space, is wide in usage range, can be used for low-floor and high-floor vehicles, and is also applicable to a single-axle bogie, a double-axle bogie and a multi-axle bogie.
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公开(公告)号：US20190210620A1
公开(公告)日：2019-07-11
申请号：US16334918
申请日：2017-02-28
Applicant: BYD COMPANY LIMITED
Inventor： Daolin LI , Zhicheng TAN
Abstract: The present disclosure provides a bogie assembly and a straddle-type monorail vehicle with the same. The bogie assembly comprises: a bogie frame; an electric assembly which is mounted on the bogie frame and comprises a traction motor, a gear reducer and a planetary wheel-side reducer, wherein the traction motor is connected with an input shaft of the gear reducer, and an output shaft of the gear reducer is connected with an input end of the planetary wheel-side reducer; and a running wheel which is mounted on the bogie frame, wherein an output end of the planetary wheel-side reducer is connected with a hub of the running wheel.
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Patent Agency Ranking
公开(公告)号：US20220340108A1
公开(公告)日：2022-10-27
申请号：US17639258
申请日：2020-08-27
Applicant: BYD COMPANY LIMITED
Abstract: A vehicle and a braking method and a device therefor are provided. The method includes the following steps: obtaining a first state information of the vehicle, where the first state information includes a vehicle mass and a deceleration required by braking; calculating a braking torque required by the vehicle according to the first state information, and controlling the vehicle to output an electric braking torque according to the braking torque required by the vehicle; obtaining a current vehicle speed of the vehicle and an electric braking exit protection speed; and calculating an electric braking exit speed according to the braking torque required by the vehicle and the deceleration required by braking, and controlling the vehicle to unload the electric braking torque when the current vehicle speed is less than a larger one of the electric braking exit speed and the electric braking exit protection speed.
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公开(公告)号：US20210285519A1
公开(公告)日：2021-09-16
申请号：US16334682
申请日：2017-02-28
Applicant: BYD COMPANY LIMITED
Inventor： Jintao ZHANG , Lin REN , Daolin LI , Xin ZHANG , Jianjian YUAN , Cailin FU , Hongbin LUO
Abstract: A speed reducer, a power system, a straddle-type rail train, and a rail transport system are disclosed. The speed reducer includes: a box body; a speed-reducing mechanism, disposed in the box body; and a support shaft, a first end of the support shaft being supported on the box body, and a second end of the support shaft being connected to a high-speed end of the speed-reducing mechanism. The speed reducer according to the present disclosure achieves a more stable connection between a drive shaft and a speed-reducing mechanism and a more stable power transmission.
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公开(公告)号：US20190248385A1
公开(公告)日：2019-08-15
申请号：US16335227
申请日：2017-02-28
Applicant: BYD COMPANY LIMITED
Inventor： Daolin LI , Huiyue LIU , Zhicheng TAN , Qihua FENG
IPC: B61F5/52
Abstract: The present disclosure provides a bogie frame, a bogie assembly and a rail vehicle. The bogie frame includes a bogie body, the bogie body being substantially rectangular and including a first connecting beam, a second connecting beam, a third connecting beam and a fourth connecting beam which are sequentially connected end to end, where the first connecting beam is opposite to the third connecting beam, the second connecting beam is opposite to the fourth connecting beam, an electric assembly mounting groove is formed in the fourth connecting beam, the thickness of the fourth connecting beam is greater than the thickness of the second connecting beam, and the top wall of the first connecting beam and the top wall of the third connecting beam are connected between the top wall of the second connecting beam and the top wall of the fourth connecting beam in an arc shape.
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公开(公告)号：US20230001799A1
公开(公告)日：2023-01-05
申请号：US17780818
申请日：2020-10-30
Applicant: BYD COMPANY LIMITED
Inventor： Kun QIU , Pengfei LI , Ziwei ZENG , Chaorui WU , Daolin LI
IPC: B60L5/16
Abstract: A vehicle power supply device is provided. The vehicle power supply device includes: a fixed base; a scissor-fork lifting mechanism, where the scissor-fork lifting mechanism is configured to be driven by a drive device to ascend or descend; and the scissor-fork lifting mechanism includes at least one scissor-fork swing rod set, the scissor-fork swing rod set includes at least one pair of swing rods, each pair of swing rods includes two swing rods that are cross-arranged and are hinged with each other, and two swing rods in a pair of swing rods that is closest to the fixed base are separately mounted on the fixed base; and a power supply head, where the power supply head is mounted on two swing rods in a pair of swing rods that is farthest from the fixed base, and the power supply head is driven by the scissor-fork lifting mechanism to ascend or descend.
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公开(公告)号：US20220340013A1
公开(公告)日：2022-10-27
申请号：US17639251
申请日：2020-08-27
Applicant: BYD COMPANY LIMITED
Abstract: A braking method includes: obtaining a first state information of the vehicle, which includes a vehicle mass and a deceleration required by braking; calculating a braking torque according to the first state information, and controlling the vehicle to output an electric braking torque according to the braking torque; obtaining a current vehicle speed and a mechanical braking application delay time; calculating an electric braking exit speed according to the braking torque required by the vehicle and the deceleration required by braking; calculating a mechanical braking application speed according to the mechanical braking application delay time, the deceleration required by braking, and the electric braking exit speed; and determining whether to control the vehicle to unload the electric braking torque, and whether to control the vehicle to apply a mechanical braking torque according to the current vehicle speed, the electric braking exit speed, and the mechanical braking application speed.
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