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公开(公告)号：US20240145760A1
公开(公告)日：2024-05-02
申请号：US18398471
申请日：2023-12-28
Applicant: BYD COMPANY LIMITED
Inventor： Yi PAN , Yongjun MA , Zizhu GUO , Liangjun WANG , Huajun SUN
IPC: H01M10/052 , H01M4/02 , H01M4/04 , H01M4/38 , H01M10/0569 , H01M10/058 , H01M10/44 , H01M50/249
CPC classification number: H01M10/052 , H01M4/0416 , H01M4/0435 , H01M4/382 , H01M4/386 , H01M10/0569 , H01M10/058 , H01M10/44 , H01M50/249 , H01M2004/027 , H01M2220/20
Abstract: A lithium battery includes a positive electrode plate, a negative electrode plate, a separator located between the positive electrode plate and the negative electrode plate, and an electrolyte solution. The negative electrode material layer of the negative electrode plate includes a lithium-silicon composite negative electrode active material. The negative electrode material layer has a protective layer on the surface or the lithium-silicon composite negative electrode active material has a protective layer on the surface. The protective layer includes a polymer matrix and a lithium salt. When the lithium battery is fully charged, the lithium-silicon composite negative electrode active material includes elemental lithium and a lithium-silicon alloy Li4.4Si, and the elemental lithium accounts for 15%-95% by mole of the lithium-silicon composite negative electrode active material.
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公开(公告)号：US20250038306A1
公开(公告)日：2025-01-30
申请号：US18917868
申请日：2024-10-16
Applicant: BYD COMPANY LIMITED
Inventor： Ke ZHANG , Zizhu GUO , Yi PAN , Yan ZHU , Huajun SUN
IPC: H01M10/6572 , H01M10/615 , H01M10/617 , H01M10/625 , H01M10/63
Abstract: A heating system for heating a battery, includes an inverter including three bridge arms, an alternating current motor, a first controller, and a connection line. A positive electrode of the battery connects to upper bridge arms of the inverter. A negative electrode of the battery connects to lower bridge arms of the inverter. Midpoints of the three bridge arms connects to head ends of three coils of the alternating current motor respectively. Tail ends of the three coils connects together as a neutral point. A first end of the connection line connects to the neutral point, and a second end of the connection line connects to the battery. The first controller inputs a drive signal to the inverter. The battery, the inverter, the alternating current motor, and the connection line form an alternating current self-heating loop. A heating device connects to the connection line, and heats the battery.
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公开(公告)号：US20250038305A1
公开(公告)日：2025-01-30
申请号：US18916997
申请日：2024-10-16
Applicant: BYD COMPANY LIMITED
Inventor： Ke ZHANG , Zizhu GUO , Yi PAN , Yan ZHU , Huajun SUN
IPC: H01M10/6572 , H01M10/615 , H01M10/625
Abstract: A power battery comprises a first cell group and a second cell group connected in series. The heating system comprises an inverter, an AC motor, a first controller, and a plurality of connection lines. The midpoints of three bridge arms of the inverter are connected to the head ends of three-phase coils of the AC motor in a one-to-one correspondence. The tail ends of the AC motor are connected together to form a neutral point. First ends of the connection lines are connected to the neutral point of the AC motor. Second ends of the connection lines are connected to a connection point between the first cell group and the second cell group. The first controller is configured to input a drive signal to the inverter. The first cell group, the second cell group, the inverter, the AC motor, and the connection lines form an AC self-heating loop.
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公开(公告)号：US20210296637A1
公开(公告)日：2021-09-23
申请号：US16321593
申请日：2017-07-25
Applicant: BYD COMPANY LIMITED
Inventor： Jing XIE , Zizhu GUO , Yongjun MA , Guangui YI , Wei SONG , Biao LI
IPC: H01M4/36 , H01M4/133 , H01M4/1393 , H01M4/1395 , H01M10/0525 , H01M4/134 , H01M4/02
Abstract: The present disclosure provides a negative electrode material and a preparation method thereof, a negative electrode and an all-solid-state lithium-ion battery. The negative electrode material includes a negative electrode active substance and a coating layer on the surface of the negative electrode active substance, the coating layer including a polymer electrolyte and a sulfide solid electrolyte.
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公开(公告)号：US20250074253A1
公开(公告)日：2025-03-06
申请号：US18951271
申请日：2024-11-18
Applicant: BYD COMPANY LIMITED
Inventor： Ke ZHANG , Rongfang WU , Xi WANG , Zizhu GUO , Yi PAN
Abstract: A power supply device includes a first and a second battery cell. A ratio of first parameters of the first battery cell to the second battery cell is greater than a first threshold. A ratio of second parameters of the second battery cell to the first battery cell is greater than a second threshold. When a capacity of the first battery cell is greater than that of the second battery cell, the first battery cell and/or the second battery cell are/is discharged according to a rule including a first, a second, and a third condition. When the first condition is satisfied, the first battery cell is discharged to a load. When the second condition is satisfied, the first battery cell and the second battery cell are discharged to the load. When the third condition is satisfied, the first battery cell is discharged to the second battery cell and the load.
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Patent Agency Ranking
公开(公告)号：US20240109436A1
公开(公告)日：2024-04-04
申请号：US18535746
申请日：2023-12-11
Applicant: BYD COMPANY LIMITED
CPC classification number: B60L50/64 , B60L58/18 , H01M2010/4271
Abstract: A battery pack and a vehicle are provided. The battery pack is configured to provide electric energy required by the vehicle under different operating conditions. The battery pack includes a task manager, a first battery unit and a second battery unit. The first battery unit and the second battery unit respectively respond to a different operating state of a load and provide the electric energy required under the control of the task manager.
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7.发明申请公开(公告)号：US20160359193A1
公开(公告)日：2016-12-08
申请号：US15242228
申请日：2016-08-19
Applicant: BYD COMPANY LIMITED
Inventor： Guangui YI , Yongjun MA , Zizhu GUO
IPC: H01M10/0562 , C01B35/14 , C01B25/45 , H01M10/0525 , B28B3/00
CPC classification number: H01M10/0562 , B28B3/00 , C01B25/45 , C01B35/143 , C04B35/447 , C04B35/62805 , C04B35/62886 , C04B2235/3203 , C04B2235/3217 , C04B2235/3225 , C04B2235/3227 , C04B2235/3241 , C04B2235/3244 , C04B2235/3286 , C04B2235/3409 , C04B2235/5436 , C04B2235/5445 , C04B2235/5454 , C04B2235/602 , C04B2235/6562 , H01M10/0525 , H01M2300/0068 , H01M2300/0094 , Y02T10/7011
Abstract: A solid electrolyte contains an internal component and an external component coated on a surface of the internal component. The internal component is represented by a formula Li1+xMxZr2−x(PO4)3, M is one or more elements selected from a group consisting of Al, La, Cr, Ga, Y, and In, and 0.05≦x≦0.4. The external component contains a plastic deformable material and has a conductivity of about 10−7 S/cm to about 10−5S/cm. A method of preparing the solid electrolyte and a lithium ion battery including the solid electrolyte are also provided.
Abstract translation: 固体电解质包含内部组分和涂覆在内部组件的表面上的外部组分。 内部成分由式Li1 + xMxZr2-x（PO4）3表示，M是选自Al，La，Cr，Ga，Y和In中的一种或多种元素，0.05≤x≤0.4。 外部组件包含塑料可变形材料，并且具有约10-7S / cm至约10-5S / cm的导电率。 还提供了制备固体电解质的方法和包括固体电解质的锂离子电池。
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公开(公告)号：US20240351477A1
公开(公告)日：2024-10-24
申请号：US18759652
申请日：2024-06-28
Applicant: BYD COMPANY LIMITED
Inventor： Ke ZHANG , Jiannian LI , Rongfang WU , Zizhu GUO , Yi PAN
CPC classification number: B60L58/27 , B60L15/02 , B60L58/18 , H02J7/0013
Abstract: A heating circuit of a power battery is provided. The power battery includes a first battery core group and a second battery core group connected in series. The heating circuit includes an inverter, an alternating current motor, and a first controller. A neutral point of the alternating current motor is connected to a first connection point between the first battery core group and the second battery core group. The first controller is configured to input a driving signal to control the inverter to alternately connect the first battery core group to the alternating current motor and the second battery core group to the alternating current motor, to cause the first battery core group and the second battery core group to charge each other.
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公开(公告)号：US20240097142A1
公开(公告)日：2024-03-21
申请号：US18523574
申请日：2023-11-29
Applicant: BYD COMPANY LIMITED
Inventor： Yiwei HU , Zizhu GUO , Yi PAN , Jianchang ZHANG , Huajun SUN
Abstract: A dry battery electrode plate includes: a metal current collector and a self-supporting electrode film. The metal current collector is provided with pores. The self-supporting electrode film includes a first electrode film and a second electrode film. The first electrode film is arranged on one side of the metal current collector. The second electrode film is arranged on the other side of the metal current collector facing away from the first electrode film. The first electrode film and the second electrode film are configured to be press-fit connected by an external force. The first electrode film and the second electrode film are attached to the metal current collector. The first electrode film and the second electrode film are connected to each other at positions corresponding to the pores.
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10.发明公开公开(公告)号：US20230420663A1
公开(公告)日：2023-12-28
申请号：US18463954
申请日：2023-09-08
Applicant: BYD COMPANY LIMITED
Inventor： Biao LI , Zizhu GUO , Tong ZHANG , Zhuo SHI
IPC: H01M4/36 , C22C24/00 , B22F1/08 , B22F1/18 , B22F9/00 , B22F9/04 , H01M4/134 , H01M4/38 , H01M10/0562 , H01M10/052
CPC classification number: H01M4/366 , C22C24/00 , B22F1/08 , B22F1/18 , B22F9/002 , B22F9/04 , H01M4/134 , H01M4/382 , H01M4/386 , H01M10/0562 , H01M10/052 , B22F2301/054 , B22F2009/043 , H01M2004/027
Abstract: The present disclosure provides a negative electrode material, a preparation method thereof, and an all-solid-state lithium battery. The negative electrode material includes a core and an amorphous lithium-silicon alloy layer cladding the core. The core includes a glassy solid electrolyte and amorphous lithium-silicon alloy particles dispersed in the glassy solid electrolyte. The material of the amorphous lithium-silicon alloy particles is LixSi, 0
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