CN-122025914-A - Energy storage cabinet based on high-efficiency uniform temperature thermal management architecture

CN122025914ACN 122025914 ACN122025914 ACN 122025914ACN-122025914-A

Abstract

The invention discloses an energy storage cabinet based on a high-efficiency uniform temperature thermal management framework. The energy storage cabinet comprises an air flow distribution device, wherein the air flow distribution device comprises a fan cover assembly arranged on the inner side of a cabinet door and an air duct assembly arranged in a cabinet body, the air duct assembly comprises a first air guide structure arranged on the outer side of a battery module and a second air guide structure arranged between two adjacent rows of battery modules, each first air guide structure comprises an air guide part and a connecting part, the connecting parts are used for being in butt joint with the fan cover assembly to form a continuous air guide channel, the air outlet ends of each air guide structure are provided with air cavity structures, each air cavity structure comprises a main body section and an extension section which are sequentially arranged along the depth direction of the cabinet body, and the surfaces of the main body section and the extension section are provided with flow equalizing holes. According to the invention, the sectional type wind cavity structure is matched with the flow equalizing holes to realize uniform distribution of cooling airflow in the depth direction and the height direction, so that the problem of inconsistent temperature along the depth direction of air supply is effectively solved, and the overall temperature control level of the energy storage cabinet is improved.

Inventors

ZENG JIDONG
DENG GUANGBIN
LI DEZHI
ZHANG FEIYANG
YANG DEMIN

Assignees

浙江博时新能源技术有限公司

Dates

Publication Date: 20260512
Application Date: 20260210

Claims (10)

1. Energy storage cabinet based on high-efficient samming thermal management framework, its characterized in that includes: The battery cabinet comprises a cabinet body, wherein at least two rows of battery modules are arranged in the cabinet body, and a cabinet door is hinged to the opening side of the cabinet body; The air flow distribution device comprises an air cover component arranged on the inner side of the cabinet door and an air duct component arranged in the cabinet body; The air duct assembly comprises at least two first air guide structures and at least one second air guide structure, wherein the two first air guide structures are respectively arranged at the outer sides of at least two rows of battery modules and used for conveying cooling air flow to the outer side surfaces of each row of battery modules; Each first air guide structure comprises an air guide part and a connecting part, one end of the connecting part is connected with the air inlet end of the air guide part, and the other end of the connecting part is used for being in butt joint with the fan housing assembly to form a continuous air guide channel; The air outlet ends of the first air guide structure and the second air guide structure are respectively provided with an air cavity structure, each air cavity structure comprises a main body section and an extension section which are sequentially arranged along the depth direction of the cabinet body and are communicated with each other, the main body sections are arranged adjacent to the cabinet door, the extension sections are far away from the cabinet door, the extension sections are arranged to cover the side surface height of a row of battery modules along the height direction of the cabinet body, the extension sections are larger than the main body sections in size, and the surfaces of the main body sections and the extension sections are provided with flow equalizing holes.
2. The energy storage cabinet of claim 1, wherein the air cavity structure has a plurality of air-out faces including a first air-out face facing a side of the corresponding column of battery modules, a second air-out face facing an upper side of the cabinet, and a third air-out face facing a lower side of the cabinet.
3. The energy storage cabinet of claim 2, wherein the main body section and the extension section each have the first air outlet face, the main body section has the second air outlet face and the third air outlet face, and the extension section further has a fourth air outlet face oriented in the direction of the cabinet door and a fifth air outlet face oriented away from the direction of the cabinet door.
4. The energy storage cabinet according to claim 2, wherein the flow equalizing holes are elongated holes extending along the height direction of the cabinet body, the flow equalizing holes on the first air outlet face are arranged in groups along the height direction of the cabinet body, and the height positions of the flow equalizing holes in each group correspond to the battery modules of the corresponding layers.
5. The energy storage cabinet according to claim 1, wherein the engagement portion is hinged to an air inlet end of the air guide portion by a hinge structure extending in a height direction of the cabinet body so that the engagement portion can be turned over toward the cabinet door and is abutted against a side wall of the cabinet body, and the hinge structure is arranged to protrude with respect to the at least two rows of battery modules in a width direction of the cabinet body.
6. The energy storage cabinet according to claim 5, wherein a cooling unit is arranged between the cabinet door and the fan housing assembly, the fan housing assembly comprises an air inlet portion and two air outlet portions arranged at two opposite ends of the air inlet portion, two opposite sides of the air inlet portion are respectively communicated with a cold air outlet of the cooling unit and the second air guide structure, and the two air outlet portions are respectively butted with corresponding connecting portions of the first air guide structure.
7. The energy storage cabinet according to claim 6, wherein the length of extension of the fan housing assembly along the width direction of the cabinet door is smaller than the arrangement width of the at least two rows of battery modules, and the length of extension of the fan housing assembly along the width direction of the cabinet door is larger than the arrangement width of the at least two rows of battery modules, wherein the air guide channel is formed by abutting the fan housing assembly with the first air guide structure.
8. The energy storage cabinet according to claim 7, wherein the two air outlet portions are a first air outlet portion and a second air outlet portion, the first air outlet portion is hinged to one end of the air inlet portion through a first hinge shaft extending in the height direction of the cabinet door, the second air outlet portion is fixedly connected to the other end of the air inlet portion, and the first hinge shaft protrudes out of the cooling unit in the width direction of the cabinet door.
9. The energy storage cabinet according to claim 8, wherein the air inlet portion is provided with a cavity, an air inlet and an air outlet are respectively arranged on two opposite sides of the cavity, two opposite ends of the cavity are respectively connected with the two air outlet portions, the air inlet is communicated with a cold air outlet of the cooling unit, and the air outlet is communicated with the second air guide structure.
10. The energy storage cabinet according to claim 9, wherein two air deflectors are arranged in the cavity at intervals, the two air deflectors are provided with a first air guiding surface which is arranged opposite to each other and used for guiding cooling air flow passing through the air inlet to the air outlet, and a second air guiding surface which is arranged opposite to each other and used for guiding cooling air flow passing through the air inlet to the two air outlet parts respectively.

Description

Energy storage cabinet based on high-efficiency uniform temperature thermal management architecture Technical Field The invention relates to the technical field of energy storage, in particular to an energy storage cabinet based on an efficient uniform temperature thermal management framework. Background To increase the energy density and economy of energy storage systems, energy storage cabinets are evolving towards higher capacity, more compact integration. In the operation process of the energy storage cabinet, the battery module can generate a large amount of heat, and if the heat cannot be timely and uniformly emitted, the battery performance is reduced, the service life is shortened, and even safety accidents such as thermal runaway and the like are caused. Therefore, an efficient and reliable thermal management system is the core of the energy storage cabinet design. At present, air cooling is one of the main stream cooling modes of the energy storage cabinet. The common scheme is that an air conditioner is arranged on the inner side of a cabinet door, and cold air is conveyed to a battery module area through butt joint of the cabinet door and an air duct in the cabinet body. However, in existing high density energy storage cabinet designs, airflow distribution and thermal management face the following serious challenges: First, the "tightness" of the air guide channel is in conflict with the "operating space". In order to efficiently transport cold air from the cabinet door to the air duct deep in the cabinet body, it is generally necessary to provide an extended air guiding structure to close the gap between the cabinet door and the battery module. However, due to the fact that the internal space of the energy storage cabinet is extremely compressed, after the cabinet door is opened, the overlong air guide structure is easy to interfere with the air guide structure when the battery module is put into the cabinet or taken out from the cabinet. To avoid interference, existing designs are often forced to shorten the air guiding structure, resulting in a large gap at the interface. This causes a large amount of cool air to leak before entering the battery region, which reduces cooling efficiency. Second, the "temperature uniformity" along the depth of the supply air is difficult to ensure. When the cold air enters the air duct, the wind pressure and the flow velocity can be gradually attenuated along with the increase of the air supply distance (namely along the depth direction of the cabinet body). This results in excessive cooling of the battery modules at the front end of the air intake (near the cabinet door side), while the battery modules at the end of the air duct (far from the cabinet door side) have insufficient air volume and poor heat dissipation. Therefore, a new thermal management structure of the energy storage cabinet is needed, which not only can solve the interference problem when the cabinet door is opened and closed and ensure high-efficiency sealing connection, but also can realize the flow equalization of cold air in the depth direction and the height direction, so that local hot spots are reduced, and the overall temperature control level of the energy storage cabinet is improved. Disclosure of Invention The invention mainly aims to provide an energy storage cabinet based on an efficient uniform temperature heat management framework so as to solve the technical problems. The aim of the invention can be achieved by adopting the following technical scheme: The energy storage cabinet based on the high-efficiency uniform temperature heat management framework comprises a cabinet body, an air flow distribution device, an air duct assembly, two first air guide structures and at least one second air guide structure, wherein at least two rows of battery modules are arranged in the cabinet body, the opening side of the cabinet body is hinged with a cabinet door, the air flow distribution device comprises an air cover assembly arranged on the inner side of the cabinet door and an air duct assembly arranged in the cabinet body, the air duct assembly comprises at least two first air guide structures and at least one second air guide structure, the two first air guide structures are respectively arranged on the outer sides of the at least two rows of battery modules and used for conveying cooling air flow to the outer side surfaces of the battery modules, the second air guide structures are arranged between two adjacent rows of battery modules and used for conveying cooling air flow to the opposite side surfaces of the battery modules, one end of each air guide portion is connected with the air inlet end of the air guide portion, the other end of each air guide portion is used for being in butt joint with the air cover assembly to form a continuous air guide channel, the first air guide structures and the second air guide structures are respectively arranged on the outer sides of the battery mo