公开(公告)号：US20230282914A1

公开(公告)日：2023-09-07

申请号：US18176977

申请日：2023-03-01

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Yezheng Zhang ,  Jinxing Yang ,  Jing Zhu ,  Zheng Zhong

IPC: H01M50/15 ,  H01M10/42 ,  H01M10/48

CPC classification number: H01M50/15 ,  H01M10/425 ,  H01M10/486 ,  H01M2010/4271 ,  H01M2010/4278

Abstract: A battery cover plate is provided, to resolve problems such as a signal transmission structure and sealing performance of the battery cover plate. The battery cover plate includes a plate body, a battery management unit, and a sensor assembly, wherein the plate body has an outer surface and an inner surface facing away from the outer surface. The battery management unit is disposed in the plate body, wherein a transmission structure is provided between the battery management unit and the outer surface, and the battery management unit includes a wireless communication module. The wireless communication module may perform wireless communication with the outside by using the transmission structure. The sensor assembly is connected to the battery management unit, wherein the sensor assembly is disposed in the plate body and extends out of the inner surface.

公开(公告)号：US20240204326A1

公开(公告)日：2024-06-20

申请号：US18592343

申请日：2024-02-29

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Yezheng Zhang ,  Jing Zhu ,  Zheng Zhong

IPC: H01M50/242 ,  H01M50/209 ,  H01M50/249 ,  H01M50/342

CPC classification number: H01M50/242 ,  H01M50/209 ,  H01M50/249 ,  H01M50/3425 ,  H01M2200/20 ,  H01M2220/20

Abstract: A battery module includes a module housing, a safety compartment, electrical assemblies, and explosion-proof structures. The safety compartment, the explosion-proof structures, and at least a part of the electrical assemblies are located outside the module housing and are located on a same side of the module housing. The explosion-proof structure includes a connection end and a pressure relief end that are disposed opposite to each other. The pressure relief end is located in the safety compartment. The pressure relief end of the explosion-proof structure is located in the safety compartment, so that a high-temperature combustible fluid from the pressure relief end flows into the safety compartment, to prevent the high-temperature combustible fluid from flowing to another position of the module housing to burn the electrical assembly. The pressure relief end of the explosion-proof structure is separated from the electrical assembly by using the safety compartment, to avoid a secondary safety accident.

公开(公告)号：US20240145861A1

公开(公告)日：2024-05-02

申请号：US18496362

申请日：2023-10-27

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Yunxiang Xu ,  Jing Zhu ,  Huan Zhang ,  Yongling Wang ,  Junming Zhang

IPC: H01M50/383 ,  H01M10/658 ,  H01M50/209 ,  H01M50/224 ,  H01M50/227 ,  H01M50/231 ,  H01M50/375

CPC classification number: H01M50/383 ,  H01M10/658 ,  H01M50/209 ,  H01M50/224 ,  H01M50/227 ,  H01M50/231 ,  H01M50/375

Abstract: The energy storage module of the battery pack is located in the housing, the heat insulation panel is located between the energy storage module and the housing, the heat insulation panel includes a heat insulation layer and an outer packaging layer. The outer packaging layer wraps the outside of the heat insulation layer and compresses a thickness of the elastic heat, insulation layer, and a ventilation channel is formed between the heat insulation panel and the energy storage module. The outer packaging layer is configured to release compression of the elastic heat insulation layer when the energy storage module reaches a thermal runaway temperature, and the heat insulation panel is filled between the housing and the energy storage module, thereby slowing down a speed at which heat passes through a side panel and spreads to the outside of the battery pack along the ventilation channel.

公开(公告)号：US20230131563A1

公开(公告)日：2023-04-27

申请号：US17974514

申请日：2022-10-26

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Rutao Liu ,  Jing Zhu ,  Zheng Zhong ,  Hanqian Zhi

IPC: H01M10/48 ,  H01M10/42

Abstract: A safety detection method for a battery module is provided in this application, which includes: obtaining a plurality of battery temperatures detected by the plurality of temperature sensors at a first moment; determining a standard battery temperature based on the plurality of battery temperatures; obtaining a second battery temperature of a first battery set at a second moment; determining a temperature change rate of first battery set based on a first battery temperature, a second battery temperature, the first moment, and the second moment; and determining that a battery in the first battery set has a liquid leakage risk when a third difference between the first battery temperature detected by the first temperature sensor at the first moment and the standard battery temperature is greater than a first temperature threshold, and the temperature change rate is greater than a temperature change rate threshold.