公开(公告)号：US12015126B2

公开(公告)日：2024-06-18

申请号：US17017461

申请日：2020-09-10

Applicant: BYD COMPANY LIMITED

Inventor： Chuanfu Wang ,  Long He ,  Huajun Sun ,  Jianhua Zhu ,  Zhipei Lu ,  Yan Zhu ,  Shichao Hu

IPC: H01M10/42 ,  H01M10/0525 ,  H01M10/0585 ,  H01M50/112 ,  H01M50/147 ,  H01M50/207 ,  H01M50/593 ,  H01M50/636

CPC classification number: H01M10/4214 ,  H01M10/0525 ,  H01M10/0585 ,  H01M50/112 ,  H01M50/147 ,  H01M50/207 ,  H01M50/593 ,  H01M50/636 ,  H01M2220/20

Abstract: The present invention provides a lithium-ion battery, including: a housing and a separator located inside the housing, where the separator separates internal space of the housing into a plurality of accommodation cavities, battery core sets are disposed inside the accommodation cavities, the battery core sets each include at least one pole shank, and the battery core sets are connected in series; and at least one separator is provided with a liquid injection hole, and the liquid injection hole is used to connect two adjacent accommodation cavities on two sides of the separator; and a block mechanism, where the block mechanism is located inside the housing, the block mechanism enables the liquid injection hole to be in a predetermined state, and the predetermined state includes an open state and a closed state. The battery provided in the present invention ensures isolation and safety of each battery core set while facilitating liquid injection.

公开(公告)号：US20240154121A1

公开(公告)日：2024-05-09

申请号：US18404634

申请日：2024-01-04

Applicant: BYD COMPANY LIMITED

Inventor： Xiaotao YUAN ,  Zhan XU ,  Xuanwei WU ,  Tao YE ,  Kefeng HE

IPC: H01M4/62 ,  H01M4/04 ,  H01M4/131 ,  H01M4/1391

CPC classification number: H01M4/62 ,  H01M4/043 ,  H01M4/0471 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/623 ,  H01M4/625

Abstract: A lithium-ion battery electrode includes a current collector and n electrode plate layers laminated on the current collector, n being an integer greater than or equal to 2. The electrode plate layer contains a pore-forming agent. A content of the pore-forming agent in the electrode plate layers gradually increases along a direction gradually away from the current collector. The pore-forming agent is selected from an electrolyte solution additive which is solid at normal temperature.

公开(公告)号：US20240143656A1

公开(公告)日：2024-05-02

申请号：US18392553

申请日：2023-12-21

Applicant: BYD COMPANY LIMITED

Inventor： Yuetong CHEN ,  Junxian LUO

IPC: G06F16/901 ,  G06F16/2455

CPC classification number: G06F16/9024 ,  G06F16/24565

Abstract: A method for batch configuration of linkages, a terminal, a server, an electronic device, and a storage medium are provided. The method for batch configuration of linkages includes the following steps. Data of linkage nodes configured in a linkage table and data of linkage nodes in an address space are loaded. Each of the linkage nodes configured in the linkage table includes a keyword representing a type of the linkage node. The data in the address space is retrieved based on the keywords representing the types of the linkage nodes. The data of the linkage nodes configured in the linkage table is loaded into all retrieved linkage nodes in batches.

公开(公告)号：US20240140503A1

公开(公告)日：2024-05-02

申请号：US18400795

申请日：2023-12-29

Applicant: BYD COMPANY LIMITED

Inventor： Xingxing LIANG ,  Yejun QIN

IPC: B61L25/02

CPC classification number: B61L25/021

Abstract: A full redundancy speed measurement method for a rail train includes: inputting a pulse signal and a phase difference of a multi-channel speed sensor into an active speed measurement system and a standby speed measurement system; performing switching between different multi-channel speed sensors and between different channel groups depending on whether the inputted signal is normal; determining a train running direction based on the phase difference, and calculating an speed value and an acceleration value through the pulse signal; processing the pulse signal of the multi-channel speed sensor, and determining whether the speed value of each channel is in a reasonable interval based on the speed value and the acceleration value of each channel, and determining whether the speed value of each channel in the reasonable interval conforms to the control logic; and performing a consistency voting on a speed value outputted, and outputting the train advancement direction and the speed value to a train control system if the consistency voting is approved.

公开(公告)号：US11964591B2

公开(公告)日：2024-04-23

申请号：US17639255

申请日：2020-08-27

Applicant: BYD COMPANY LIMITED

Inventor： Dong Ma ,  Lu Wang ,  Daolin Li

IPC: B60L7/18 ,  B60L7/26 ,  B60T8/32 ,  B60T8/58 ,  B60T13/58

CPC classification number: B60L7/18 ,  B60L7/26 ,  B60T8/3215 ,  B60T8/58 ,  B60T13/586 ,  B60T2210/12 ,  B60T2210/20 ,  B60T2250/00 ,  B60T2250/02 ,  B60T2250/04

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 vehicle speed of the vehicle and a maximum electric braking exit speed; and; controlling, if the deceleration required by braking of the vehicle changes to zero, the vehicle to unload the electric braking torque when the current vehicle speed is less than the maximum electric braking exit speed. A braking device for a vehicle and a vehicle are further provided.

公开(公告)号：US20240123866A1

公开(公告)日：2024-04-18

申请号：US18531164

申请日：2023-12-06

Applicant: BYD COMPANY LIMITED

Inventor： Saiwu LIU ,  Zhihua CHENG ,  Lina YANG ,  Yanjun CHEN

IPC: B60L58/22 ,  B60L58/12 ,  B60L58/21

CPC classification number: B60L58/22 ,  B60L58/12 ,  B60L58/21 ,  B60L2200/26

Abstract: A method for equalizing battery capacities of a vehicle includes: determining, based on a current capacity of a battery of each of carriages, a largest battery capacity and a corresponding first carriage thereof, and a smallest battery capacity and a corresponding second carriage thereof; determining, based on the largest battery capacity and the smallest battery capacity, a first traction force and a second traction force, where the first traction force is greater than the second traction force; and outputting a first control command including the first traction force to the first carriage, and outputting a second control command including the second traction force to the second carriage for equalizing battery capacities of the carriages of the vehicle.

公开(公告)号：US20240116387A1

公开(公告)日：2024-04-11

申请号：US18540188

申请日：2023-12-14

Applicant: BYD COMPANY LIMITED

Inventor： Yubo LIAN ,  Heping LING ,  Junhua LIU ,  Fengjun AN ,  Qi WEN

IPC: B60L53/62 ,  B60L53/30 ,  B60L53/66

CPC classification number: B60L53/62 ,  B60L53/305 ,  B60L53/66 ,  B60L2210/12 ,  B60L2210/14

Abstract: A charging method includes: obtaining a first voltage of a charging port of a vehicle; determining a target buck value based on the first voltage, adjusting a voltage on a buck side of a buck-boost converter of the vehicle based on the target buck value, and sending the target buck value to a charging pile to enable the charging pile to determine an output voltage of the charging pile based on the target buck value; increasing a charging demand current of the vehicle to a maximum allowable charging current of the vehicle; and charging the vehicle according to the maximum allowable charging current.

公开(公告)号：US11955651B2

公开(公告)日：2024-04-09

申请号：US17421875

申请日：2019-06-21

Applicant: BYD COMPANY LIMITED

Inventor： Long He ,  Huajun Sun ,  Wenfeng Jiang ,  Zhipei Lu ,  Weixin Zheng ,  Jianglong Tang ,  Yan Zhu ,  Xinyue Wang ,  Kefeng He

IPC: B60K1/04 ,  B60L50/60 ,  B60L50/64 ,  H01M10/052 ,  H01M10/42 ,  H01M10/613 ,  H01M10/625 ,  H01M10/647 ,  H01M10/6551 ,  H01M10/6554 ,  H01M50/103 ,  H01M50/119 ,  H01M50/209 ,  H01M50/244 ,  H01M50/249 ,  H01M50/271 ,  H01M50/317 ,  H01M50/342 ,  H01M50/35 ,  H01M50/383 ,  H01M50/531 ,  H01M50/543 ,  B60L58/26

CPC classification number: H01M50/209 ,  B60K1/04 ,  B60L50/64 ,  B60L50/66 ,  H01M10/052 ,  H01M10/425 ,  H01M10/613 ,  H01M10/625 ,  H01M10/647 ,  H01M10/6551 ,  H01M10/6554 ,  H01M50/103 ,  H01M50/119 ,  H01M50/244 ,  H01M50/249 ,  H01M50/271 ,  H01M50/317 ,  H01M50/342 ,  H01M50/3425 ,  H01M50/35 ,  H01M50/383 ,  H01M50/531 ,  H01M50/543 ,  B60K2001/0405 ,  B60K2001/0438 ,  B60L58/26 ,  H01M2010/4271 ,  H01M2220/20

Abstract: A power battery pack includes: a pack body; a plurality of cells, disposed in the pack body; the cell having a length L0, a width H0, and a thickness D0, where at least one cell meets: L0>H0≥D0, a length direction of the cell is arranged along a width direction of a vehicle body of the electric vehicle, and in the width direction of the electric vehicle, the length L0 of the cell and a size W of the vehicle body of the electric vehicle in the width direction meet: 46%≤L0/W≤76%; or at least one cell meets: L0>H0≥D0, a length direction of the cell is arranged along a length direction of a vehicle body of the electric vehicle, and in the length direction of the electric vehicle, the length L0 of the cell and a size X of the vehicle body of the electric vehicle in the length direction meet: 40%≤L0/W≤76%.

公开(公告)号：US20240113601A1

公开(公告)日：2024-04-04

申请号：US18525205

申请日：2023-11-30

Applicant: BYD COMPANY LIMITED

Inventor： Fengchuan YU ,  Xingchun ZHANG ,  Qinghui ZENG

IPC: H02K11/33 ,  H02K5/20 ,  H02K9/19

CPC classification number: H02K11/33 ,  H02K5/203 ,  H02K9/19 ,  H02K2211/03

Abstract: A motor controller includes a first box body including a first surface and a second surface opposite to each other along a thickness direction of the first box body, and includes a cooling water passage that includes a first opening on the first surface. An IGBT module is disposed on the first surface and disposed in the cooling water passage. The motor controller further includes a capacitor disposed on the second surface and connected to the IGBT module, and includes a housing and a capacitor core disposed in the housing. The housing has a heat dissipation opening configured to expose the capacitor core. The motor controller further includes a heat conductor covering the heat dissipation opening. One side of the heat conductor is in contact with the capacitor core, and the other side is in contact with an outer wall surface of the cooling water passage.

公开(公告)号：US20240109456A1

公开(公告)日：2024-04-04

申请号：US18535919

申请日：2023-12-11

Applicant: BYD COMPANY LIMITED

Inventor： Hao LU ,  Zhicheng TAN ,  Hongtao SHE ,  Mingyang GUO ,  Kangxian PAN

IPC: B60L53/80 ,  B60L53/22 ,  B60L53/62

CPC classification number: B60L53/80 ,  B60L53/22 ,  B60L53/62 ,  B60L2210/12 ,  B60L2210/14

Abstract: A method for controlling battery swapping of a vehicle is provided. The vehicle induces a vehicle control unit (VCU), a bidirectional DC-DC converter assembly, a vehicle load, a battery controller, a power battery pack, and a storage battery. The method includes: receiving, by the VCU, a battery swapping instruction when the vehicle is in the high-voltage power-on state; transmitting, by the VCU, a switching instruction to the bidirectional DC-DC converter assembly in response to the battery swapping instruction; and disabling, by the bidirectional DC-DC converter assembly, the buck mode in response to the switching instruction to cut off electrical connection between the power battery pack and a high-voltage circuit of the vehicle by a battery controller, and enabling the boost mode in response to the switching instruction to supply power to the vehicle load by the storage battery through the bidirectional DC-DC converter assembly.