公开(公告)号：US20230093575A1

公开(公告)日：2023-03-23

申请号：US18070850

申请日：2022-11-29

Applicant: BYD COMPANY LIMITED

Inventor： Huajun SUN ,  Gaowu WANG ,  Wensheng LIN ,  Ling ZHAO ,  Yan ZHU

IPC: H01M10/0587 ,  H01M10/0525 ,  H01M50/531 ,  H01M4/70 ,  H01M4/66 ,  H01M50/103

Abstract: The present disclosure provides a lithium ion battery, a battery pack, an electric vehicle and an energy storage device. The lithium ion battery includes a casing and an electrode core packaged in the casing. The electrode core includes a positive electrode sheet, a negative electrode sheet, and a separator located between the positive electrode sheet and the negative electrode sheet. The positive electrode sheet includes a positive electrode current collector and a positive electrode material layer loaded on the positive electrode current collector. Among the positive electrode current collector, the positive electrode material layer, the negative electrode sheet, and the separator, the one with the lowest melting point is defined as an effective component. The effective component meets: 80

公开(公告)号：US20230086598A1

公开(公告)日：2023-03-23

申请号：US18070876

申请日：2022-11-29

Applicant: BYD COMPANY LIMITED

Inventor： Huajun SUN ,  Gaowu WANG ,  Wensheng LIN ,  Ling ZHAO ,  Yan ZHU

IPC: H01M10/0587 ,  H01M10/0525 ,  H01M4/66 ,  H01M4/58 ,  H01M4/583

Abstract: The present disclosure provides a lithium ion battery, a battery pack, an electric vehicle and an energy storage device. The lithium ion battery includes a casing and an electrode core packaged in the casing. The electrode core includes a positive electrode sheet, a negative electrode sheet, and a separator located between the positive electrode sheet and the negative electrode sheet. The positive electrode sheet includes a positive electrode current collector and a positive electrode material layer on the positive electrode current collector. Among the positive electrode current collector, the positive electrode material layer, the negative electrode sheet, and the separator, the one with the lowest melting point is defined as an effective component. The effective component meets: 1 ≤ d 2 ⁢ ρ ⁢ C p × ( 1.12 nL ( n + 1 ) ⁢ W ) ≤ 500.

公开(公告)号：US20230216049A1

公开(公告)日：2023-07-06

申请号：US17928554

申请日：2021-05-24

Applicant: BYD COMPANY LIMITED

Inventor： Huajun SUN ,  Gaowu WANG ,  Wensheng LIN ,  Ling ZHAO ,  Yan ZHU

IPC: H01M4/58 ,  H01M10/0525 ,  H01M50/46 ,  H01M4/04 ,  H01M4/66 ,  H01M50/103 ,  H01M50/136 ,  H01M50/553

CPC classification number: H01M4/5825 ,  H01M10/0525 ,  H01M50/46 ,  H01M4/0404 ,  H01M4/661 ,  H01M50/103 ,  H01M50/136 ,  H01M50/553 ,  H01M2004/028

Abstract: The present disclosure provides a lithium ion battery, a power battery module, a battery pack, an electric vehicle and an energy storage device. The lithium ion battery includes a casing and an electrode core packaged in the casing. The electrode core includes a positive electrode sheet, a negative electrode sheet, and a separator located between the positive electrode sheet and the negative electrode sheet. The positive electrode sheet includes a positive electrode current collector and a positive electrode material layer loaded on the positive electrode current collector. Among the positive electrode current collector, the positive electrode material layer, the negative electrode sheet, and the separator, the one with the lowest melting point is defined as an effective component. The effective component meets:





3
≤
A

=



d
2

⁢
ρ
⁢

C
p

×

(


1.35
L

W

)


≤
850.