CN-122029676-A - Directional energy storage cabinet and energy storage system that discharges fume

CN122029676ACN 122029676 ACN122029676 ACN 122029676ACN-122029676-A

Abstract

The application provides an energy storage cabinet capable of directionally exhausting smoke, which comprises a box body, wherein the box body is used for accommodating a plurality of stacked battery packs and a smoke exhaust pipeline, the smoke exhaust pipeline is arranged between a rear wall and the battery packs, the smoke exhaust pipeline extends along the stacking direction of the battery packs, the smoke exhaust pipeline is provided with a plurality of smoke inlets, smoke outlets and ventilation openings, the smoke outlets and the ventilation openings are communicated with the external environment of the energy storage cabinet, the position of the smoke outlets on the smoke exhaust pipeline is higher than that of the ventilation openings, at least part of the battery packs are provided with pressure release valves towards the outer wall of the smoke exhaust pipeline, a first sealing piece is arranged between the pressure release valves and the smoke inlets, an opening at one end of the first sealing piece covers the periphery of the pressure release valves, and an opening at the other end of the first sealing piece covers the periphery of the smoke inlets. The high-temperature smoke released when the battery pack is out of control thermally is discharged to the smoke exhaust pipeline through the smoke inlet, and then is released to the external environment through the smoke outlet, so that the directional smoke exhaust of the energy storage cabinet is realized.

Inventors

LI WEIGUO
Li Limou
FAN GUOHUA
ZHANG XUECHAO
YU TAO

Assignees

华为数字能源技术有限公司

Dates

Publication Date: 20260512
Application Date: 20240820
Priority Date: 20231208

Claims (18)

The energy storage cabinet is characterized by comprising a box body, wherein the box body is provided with a box door, the box door is arranged in parallel with the rear wall of the box body, the box body is used for accommodating a plurality of stacked battery packs and a smoke exhaust pipeline, the smoke exhaust pipeline is arranged between the rear wall and the battery packs, and the smoke exhaust pipeline extends along the stacking direction of the battery packs; The smoke exhaust pipeline is provided with a plurality of smoke inlets, smoke outlets and ventilation openings, the smoke outlets and the ventilation openings are communicated with the external environment of the energy storage cabinet, and the position of the smoke outlets on the smoke exhaust pipeline is higher than that of the ventilation openings; The plurality of smoke inlets are arranged at intervals along the stacking direction of the plurality of battery packs, a pressure release valve is arranged on the outer wall of at least part of the battery packs facing the smoke exhaust pipeline, a first sealing piece is arranged between the pressure release valve and the smoke inlets, the first sealing piece comprises two ends which are arranged in parallel along the interval direction of the rear wall and the box door, an opening at one end of the first sealing piece covers the periphery of the pressure release valve, and an opening at the other end of the first sealing piece covers the periphery of the smoke inlet.
The energy storage cabinet of claim 1, wherein the smoke evacuation channel comprises two side walls arranged in parallel, one side wall being arranged in parallel with the outer wall of the battery pack, the other side wall being located between the one side wall and the rear wall; One of the side walls is provided with a plurality of smoke inlets, the smoke inlets correspond to the battery packs one by one, and the other side wall is provided with a smoke outlet.
The energy storage cabinet of claim 2, wherein a gap exists between the other side wall and the rear wall, the gap being filled with a fire retardant material.
A power storage cabinet according to claim 2 or 3, wherein the lower edge of the smoke outlet is higher than the upper edge of the smoke inlet located at the topmost of the plurality of smoke inlets.
The energy storage cabinet of any one of claims 2-4, wherein a partial region of the rear wall is provided with a plurality of vent holes, an orthographic projection of the partial region in a direction of separation of the rear wall and the door covering an orthographic projection of the smoke vent in a direction of separation of the rear wall and the door.
The energy storage cabinet of any one of claims 2-5, wherein a first baffle is disposed between the rear wall and the other side wall, an orthographic projection of the first baffle in a direction of spacing of the rear wall and the door covering at least an orthographic projection of the plurality of vent holes in a direction of spacing of the rear wall and the door.
The energy storage cabinet of claim 6, wherein a second baffle is provided at the smoke outlet, and orthographic projections of the first baffle and the second baffle in a direction of spacing of the rear wall and the door have a partial overlap region.
The energy storage cabinet of claim 7, wherein the first baffle is secured to the top wall of the housing and is inclined toward the rear wall, and the second baffle is secured to the lower edge of the smoke vent and is inclined toward the rear wall.
The energy storage cabinet of claim 6, wherein the first baffle is disposed parallel to the rear wall, and a plurality of through holes are formed in the first baffle and are disposed in a non-overlapping manner with the plurality of vent holes.
The energy storage cabinet according to any one of claims 2-9, wherein the smoke exhaust duct comprises a bottom wall, the two side walls are perpendicular to the bottom wall, and a second sealing element is arranged between the bottom surface of the two side walls facing the bottom wall and the bottom wall; the ventilation opening is arranged on the bottom wall and is positioned between the two second sealing pieces.
The energy storage cabinet according to any one of claims 2-10, wherein one of the side walls comprises a plurality of protrusions facing the outer wall of each of the battery packs, the protrusions are provided with hollow structures, each protrusion is provided with the smoke inlet, and the sum of the height of the protrusions and the thickness of the first sealing member is greater than or equal to the height of the relief valve protruding from the outer wall of the battery pack; The periphery of the protruding part is abutted with the other end of the first sealing piece.
The energy storage cabinet of claim 1, wherein the smoke evacuation conduit comprises a side wall between the rear wall and an outer wall of the battery pack, the side wall having the plurality of smoke inlets disposed thereon, the rear wall having the smoke outlets disposed thereon.
The energy storage cabinet of claim 12, wherein a baffle is disposed between the smoke outlet and the side wall, and an included angle between the baffle and the side wall is an acute angle.
The energy storage cabinet of claim 12 or 13, wherein the side wall is perpendicular to the bottom wall of the smoke evacuation duct, and a second seal is provided between the bottom surface of the side wall facing the bottom wall and the bottom wall; The vent is disposed in the bottom wall, the vent being located between the rear wall and the second seal.
An energy storage cabinet according to claim 12 or 13, wherein the rear wall is perpendicular to the bottom wall of the smoke evacuation duct, and the vent is provided in an upper region at the junction of the rear wall and the bottom wall.
The energy storage cabinet of claim 1, wherein the smoke exhaust duct comprises a top wall, a bottom wall and a side wall, the bottom wall and the top wall are arranged in parallel, the bottom wall and the top wall intersect the side wall, the side wall is arranged in parallel with the outer wall of the battery pack, the side wall is provided with the plurality of smoke inlets, the top wall is provided with the smoke outlets, and the bottom wall is provided with the ventilation openings.
The energy storage cabinet of any one of claims 1-16, wherein the other end of the first seal comprises an inner wall and an outer wall disposed opposite one another, the inner wall disposed toward the smoke inlet, a lower edge of the inner wall of the first seal being on the same level as a lower edge of the smoke inlet, or a lower edge of the inner wall of the first seal being higher than a lower edge of the smoke inlet.
An energy storage system comprising an energy storage cabinet according to any one of claims 1 to 17 and a power converter for converting ac power from an external ac power source to dc power for output to the energy storage cabinet, and/or for converting dc power from the energy storage cabinet to ac power for output to a load or grid.

Description

Directional energy storage cabinet and energy storage system that discharges fume Cross Reference to Related Applications The present application claims priority from the chinese patent application filed at 2023, 12, 08, filed with the chinese national intellectual property agency, application number 202323352171.4, application name "an energy storage cabinet and energy storage system for directional smoke evacuation", the entire contents of which are incorporated herein by reference. Technical Field The application relates to the technical field of energy storage safety, in particular to an energy storage cabinet and an energy storage system for directional smoke exhaust. Background New energy power generation such as photovoltaic and the like and the matched energy storage cabinet thereof are increasingly in strong demand, and the energy storage cabinet is widely applied by virtue of the advantages of high flexibility, high energy density, high controllability and the like. In practical application, when the battery pack is out of control, the pressure release valve is opened to release the combustible gas such as H 2, CO and the like to meet the spark or high-temperature surface, explosion can possibly be caused in the relatively closed environment in the cabinet, and how to rapidly discharge the combustible gas into the external air through the pressure release valve of the battery to avoid the risk of combustion or explosion caused by the accumulation of the combustible gas in the energy storage cabinet becomes a problem to be solved in the industry. Disclosure of utility model The application provides an energy storage cabinet and an energy storage system for directional smoke exhaust, which are characterized in that a directional smoke exhaust pipeline is designed for combustible smoke in the energy storage cabinet, when a battery pack in the energy storage cabinet is out of control, the high-temperature flue gas generated in the battery pack is discharged to the outside of the energy storage cabinet through the directional smoke exhaust pipeline in time, so that the risk of explosion of the energy storage cabinet is reduced, and the use safety of the energy storage system is improved. In a first aspect, the application provides an energy storage cabinet for directional smoke exhaust, the energy storage cabinet comprises a box body, the box body is provided with a box door, the box door is arranged in parallel with the rear wall of the box body, the box body is used for accommodating a plurality of stacked battery packs and a smoke exhaust pipeline, the smoke exhaust pipeline is arranged between the rear wall and the plurality of battery packs, and the smoke exhaust pipeline extends along the stacking direction of the plurality of battery packs. The smoke exhaust pipeline is provided with a plurality of smoke inlets, smoke outlets and ventilation openings, the smoke outlets and the ventilation openings are communicated with the external environment of the energy storage cabinet, and the position of the smoke outlets on the smoke exhaust pipeline is higher than that of the ventilation openings. The plurality of smoke inlets are arranged at intervals along the stacking direction of the plurality of battery packs, a pressure release valve is arranged on the outer wall of at least part of the battery packs facing the smoke exhaust pipeline, a first sealing piece is arranged between the pressure release valve and the smoke inlets, the first sealing piece comprises two ends which are arranged in parallel along the interval direction of the rear wall and the box door, an opening at one end of the first sealing piece covers the periphery of the pressure release valve, and an opening at the other end of the first sealing piece covers the periphery of the smoke inlet. When the battery pack is out of control, the pressure release valve of the battery pack is opened, and high-temperature gas in the battery pack is released into the smoke exhaust pipeline from the opening of the pressure release valve of the outer wall of the battery pack and the smoke inlet, and is discharged to the external environment through the smoke outlet of the smoke exhaust pipeline. A gap may exist between the outer wall of the battery pack and the sidewall where the smoke inlet is located. Therefore, the first sealing piece is arranged between the battery pack and the smoke inlet, so that a sealing structure is formed between the outer wall of the battery pack and the smoke exhaust pipeline, high-temperature gas generated by a certain battery Bao Re in a runaway manner can directionally enter the corresponding smoke inlet, the high-temperature gas released by the battery pack can be prevented from spreading inside the battery compartment, and the thermal runaway is prevented from spreading to other battery packs, so that the thermal runaway of the whole energy storage cabinet is caused, and the safety performance of the energy storage