CN-224217540-U - Energy storage cabinet

CN224217540UCN 224217540 UCN224217540 UCN 224217540UCN-224217540-U

Abstract

The utility model relates to the technical field of energy storage, and discloses an energy storage cabinet which comprises a cabinet body, wherein a battery bin and an adjacently arranged equipment bin are formed in the cabinet body, a plurality of electric cores are arranged in the battery bin, insulating cooling liquid is filled in the battery bin to enable the electric cores to be immersed in the battery bin, a direct cooling temperature control system comprises a direct cooling unit and a plurality of direct cooling plates, the direct cooling unit is arranged in the equipment bin and comprises a unit shell, a compressor, a condenser, an electric control box and a heat dissipation fan, the direct cooling plates are arranged in the battery bin, and the compressor, the condenser and the direct cooling plates are sequentially connected through direct cooling pipelines to form a refrigerant circulation loop, and each direct cooling plate is respectively attached to the surface of the corresponding electric core. The energy storage cabinet overcomes the limitation of the traditional energy storage system in the aspects of temperature control and safety by combining the direct cooling technology of the refrigerant and the battery immersing technology. The direct cooling temperature control system directly controls the temperature of the battery cell through the direct cooling unit and the direct cooling plate, improves the heat exchange efficiency, saves the cost, and further ensures the temperature uniformity and the safety of the battery cell by immersing the battery cell in the insulating cooling liquid.

Inventors

WANG XIAOBIN
JIAO TAO
LI WENJIANG
LIU MINXUE
SHI WENBO
GAO QIANG

Assignees

青岛海信网络能源股份有限公司

Dates

Publication Date: 20260508
Application Date: 20250512

Claims (10)

1. An energy storage cabinet, comprising: The battery compartment is internally provided with a plurality of battery cores, and is filled with insulating cooling liquid so as to enable the battery cores to be immersed in the insulating cooling liquid; the direct cooling temperature control system comprises a direct cooling unit and a plurality of direct cooling plates; The direct cooling unit is arranged in the equipment bin and comprises a unit shell, a compressor, a condenser, an electric control box and a heat radiation fan; The direct cooling plates are arranged in the battery bin, and the compressor, the condenser and the direct cooling plates are sequentially connected through direct cooling pipelines to form a refrigerant circulation loop, wherein the direct cooling plates are respectively attached to the surfaces of the corresponding electric cores.
2. The energy storage cabinet of claim 1, wherein a battery frame is disposed in the battery compartment, and the plurality of electrical cells and the plurality of direct cooling plates are integrally fixed to the battery frame.
3. The energy storage cabinet according to claim 1, wherein an openable and closable top cover is arranged on the cabinet body at the top of the battery compartment, the battery frame integrated with the plurality of electric cores and the plurality of direct cooling plates can be integrally hoisted into the battery compartment through the top cover, and the equipment compartment is arranged at the side part of the battery compartment.
4. The energy storage cabinet of claim 1, wherein the direct cooling line comprises: The primary pipeline is arranged in the equipment bin and is connected with the direct cooling unit; The two diode pipelines are arranged in the battery bin and connected with the primary pipeline; the three-stage pipelines are arranged in parallel, are arranged in the battery bin, are connected between the two diode pipelines, and are respectively connected with the plurality of direct cooling plates in a one-to-one correspondence manner.
5. The energy storage cabinet of claim 4, wherein the two diode lines are each connected to a respective triode line through at least one knockout.
6. The energy storage cabinet according to claim 4, wherein the direct cooling unit is arranged at a position close to the upper side face of the battery compartment, a pipe penetrating hole for communicating the battery compartment and the equipment compartment is formed in the side wall of the upper portion of the battery compartment, and the primary pipeline and the secondary pipeline are connected through the pipe penetrating hole.
7. The energy storage cabinet according to claim 1, wherein the direct cooling unit has a vertical structure, a return air inlet is formed in the front side of the unit housing, an air outlet is formed in the rear side of the unit housing, the heat dissipation fan is installed in the unit housing close to the air outlet, and the condenser is arranged in the unit housing in an inclined mode.
8. The energy storage cabinet of claim 7, wherein a detachable return air grille is arranged at the return air inlet, and the electric control box is arranged close to the return air inlet and is drawably arranged in the unit shell through a sliding rail mechanism.
9. The energy storage cabinet of claim 1, wherein the plurality of electric cores are arranged up and down along the vertical direction, a direct cooling plate is respectively and correspondingly attached to the lower surface of each electric core, and a direct cooling plate is also arranged on the upper surface of the electric core positioned at the top.
10. The energy storage cabinet of claim 1, wherein said direct cooling unit further comprises a refrigerant heater disposed in said refrigerant circulation loop for heating the refrigerant in a low temperature environment.

Description

Energy storage cabinet Technical Field The utility model relates to the technical field, in particular to an energy storage cabinet. Background The current energy storage system temperature control field mainly adopts two technical schemes of air cooling and liquid cooling. The air cooling technology realizes heat exchange through forced air convection, has the problems of low heat exchange efficiency, poor temperature uniformity and the like, and is difficult to meet the heat dissipation requirement of the high-energy-density energy storage system. In the liquid cooling technology, although the heat exchange efficiency is obviously improved through cooling media such as glycol aqueous solution, the secondary heat exchange between the refrigerant and the cooling liquid is still needed by the plate type heat exchanger, and the circulating water pump is needed to be configured to maintain the flow of the cooling liquid, so that the system has a complex structure, the energy consumption is increased, and the maintenance cost is higher. The existing immersed cooling technology is mostly applied to the fields of data center servers and the like, the energy storage industry is less in application, and in addition, a power system is additionally arranged in the existing immersed scheme to drive cooling liquid to circulate, so that the complexity of equipment is increased, the running energy consumption is increased, and the phenomenon of liquid leakage is easily caused outside in the process of circulating insulating oil conveyed by a pipeline. Disclosure of utility model Aiming at the problems pointed out in the background art, the application provides the energy storage cabinet, which overcomes the limitations of the traditional energy storage system in the aspects of temperature control and safety by combining a refrigerant direct cooling technology with a battery immersing technology. The direct cooling temperature control system directly controls the temperature of the battery cell through the direct cooling unit and the direct cooling plate, a cooling liquid system of the liquid cooling system is omitted, the refrigerant is used for directly exchanging heat with the battery cell through the direct cooling plate, the heat exchange efficiency is improved, the cost is saved, the risk of short circuit of the battery cell caused by liquid leakage of the liquid cooling system is avoided, and meanwhile, the battery cell of the battery bin is immersed in the insulating cooling liquid, so that the temperature uniformity and the safety of the battery cell are further ensured. In order to achieve the aim of the utility model, the utility model is realized by adopting the following technical scheme: in some embodiments of the present application, there is provided an energy storage cabinet comprising: The battery compartment is internally provided with a plurality of battery cores, and is filled with insulating cooling liquid so as to enable the battery cores to be immersed in the insulating cooling liquid; the direct cooling temperature control system comprises a direct cooling unit and a plurality of direct cooling plates; The direct cooling unit is arranged in the equipment bin and comprises a unit shell, a compressor, a condenser, an electric control box and a heat radiation fan; The direct cooling plates are arranged in the battery bin, and the compressor, the condenser and the direct cooling plates are sequentially connected through direct cooling pipelines to form a refrigerant circulation loop, wherein the direct cooling plates are respectively attached to the surfaces of the corresponding electric cores. The limitations of the traditional energy storage system in temperature control and safety are overcome by combining the direct cooling technology of the refrigerant and the immersion technology of the battery. The direct cooling temperature control system directly controls the temperature of the battery cell through the direct cooling unit and the direct cooling plate, improves the heat exchange efficiency, saves the cost, and further ensures the temperature uniformity and the safety of the battery cell by immersing the battery cell in the insulating cooling liquid. In some embodiments of the present application, a battery frame is disposed in the battery compartment, and the plurality of electric cells and the plurality of direct cooling plates are integrally fixed on the battery frame. The battery frame is used for fixing and guiding the battery core and the direct cooling plate, and is convenient for installing and maintaining the battery core. In some embodiments of the application, an openable and closable top cover is arranged on a cabinet body at the top of the battery compartment, the battery frame integrated with the plurality of electric cores and the plurality of direct cooling plates can be integrally hoisted into the battery compartment through the top cover, and the equipment compartment is arran