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    Cu-based microcrystal alloy and preparation method thereof
    2.
    发明授权
    Cu-based microcrystal alloy and preparation method thereof 有权

    公开(公告)号：US11174533B2

    公开(公告)日：2021-11-16

    申请号：US16627882

    申请日：2018-07-02

    Applicant: BYD COMPANY LIMITED

    Inventor： Qiang Guo ,  Mengde Wang ,  Wei An

    IPC: C22C9/05 ,  C22C1/02

    Abstract: The disclosure relates to a Cu-based microcrystal alloy and a preparation method thereof. Through being measured in percentage by mass, the Cu-based microcrystal alloy provided by the disclosure includes 20 to 30 percent of Mn, 0.01 to 10 percent of Al, 5 to 10 percent of Ni, 0.3 to 1.5 percent of Ti, 0 to 1.5 percent of Zr, 0.05 to 2 percent of Si and 45 to 74.64 percent of Cu.

    Heat spreader and illumination device
    4.
    发明授权
    Heat spreader and illumination device 有权

    公开(公告)号：US12104765B2

    公开(公告)日：2024-10-01

    申请号：US18614844

    申请日：2024-03-25

    Applicant: BYD COMPANY LIMITED

    Inventor： Liang Zhu ,  Qiang Guo ,  Danhua Wen ,  Bin Fang ,  Siquan Zhang

    IPC: F21S45/48 ,  F21S45/49 ,  F21W107/10 ,  F21Y115/10

    CPC classification number: F21S45/48 ,  F21S45/49 ,  F21W2107/10 ,  F21Y2115/10

    Abstract: A heat spreader and an illumination device including the heat spreader are disclosed. The heat spreader includes a first substrate and multiple first heat dissipation fins, the multiple first heat dissipation fins are arranged side by side on the first substrate at intervals in a first preset direction, and the heat spreader meets constraints of the following Relational expression 1: N∈{L/[δ+9], L/[δ+9]+2} and Relational expression 2: H∈{[(δ1+δ2)/2−1.2]/tan 2θ, [(δ1+δ2)/2+1.2]/tan 2θ}. L represents a length of the first substrate in the first preset direction, represents a weighted average thickness of the multiple first heat dissipation fins, N represents a distribution number of the first heat dissipation fins, δ1 represents a maximum thickness of the first heat dissipation fin, δ2 represents a minimum thickness of the first heat dissipation fin, θ represents a draft angle of the first heat dissipation fin, and H represents a distribution height of the first heat dissipation fin.

    Forklift, hydraulic cylinder assembly and hydraulic device thereof
    7.
    发明授权
    Forklift, hydraulic cylinder assembly and hydraulic device thereof 有权

    公开(公告)号：US10253790B2

    公开(公告)日：2019-04-09

    申请号：US15146691

    申请日：2016-05-04

    Applicant: BYD COMPANY LIMITED

    Inventor： Lei Zhou ,  Qiang Guo

    IPC: F01L17/02 ,  F15B15/14 ,  F15B11/15 ,  B66F9/22

    Abstract: A forklift, a hydraulic cylinder assembly (100) and a hydraulic device thereof are provided. The hydraulic cylinder assembly (100) includes a cylinder (1) having first, second oil inlets (151, 152) and first, second oil outlets (153, 154) therein; a cylinder liner (2) disposed within the cylinder (1) and being moveable between first and second positions, and defining a first oil port (21) and a second oil port (22) therein; a piston (31) disposed within the cylinder liner (2) and being moveable between a third position and a fourth position; a first oil chamber (41) and a second oil chamber (42) are defined by the cylinder (1), the cylinder liner (2) and the piston (31), the first oil chamber (41) is communicated with the first oil port (21), and the second oil chamber (42) is communicated with the second oil port (22).

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