High-safety self-control submerged liquid industrial and commercial energy storage cabinet

Abstract

This invention discloses a high-safety, self-regulating immersion liquid industrial and commercial energy storage cabinet, comprising a cabinet assembly, multiple submerged battery modules, a water-cooling unit, gas-liquid pipelines, and a self-regulating immersion liquid component. The self-regulating immersion liquid component includes a housing fixedly installed within the cabinet assembly, with a partition dividing the housing into independent filtration chambers and a storage chamber. The filtration chambers are sealed and connected to the gas-liquid pipelines. A detachable microchannel filter plate is fixedly installed within the filtration chamber. A variable frequency reversible pump is located at the bottom of the filtration chamber and at the connection point between the filtration chamber and the storage chamber, capable of forward and reverse rotation, allowing the immersion liquid to switch its inflow and outflow direction between the filtration chamber and the storage chamber. This invention effectively solves the problem of the inability to automatically adjust the immersion liquid level in existing industrial and commercial energy storage cabinets by coordinating the submerged battery modules, gas-liquid pipelines, and the self-regulating immersion liquid component.

Description

Technical Field

[0001] This invention relates to the field of energy storage technology, and more specifically, to a high-safety self-controlled immersion liquid industrial and commercial energy storage cabinet. Background Technology

[0002] Commercial and industrial energy storage cabinets have two heat dissipation methods: air cooling and liquid cooling. To improve the user experience of commercial and industrial energy storage, the market currently tends to favor liquid-cooled energy storage cabinets. However, existing commercial and industrial energy storage cabinets are difficult to meet the market's demand for high energy density and high charge-discharge efficiency in practical applications. This is mainly because, under the background of high charge-discharge rates and high energy density battery integration, the cell temperature is difficult to dissipate in a timely and efficient manner. In particular, when thermal runaway occurs, it can easily spread on a large scale and become uncontrollable, potentially causing major accidents and economic losses.

[0003] Existing invention patent application CN120784514A discloses a highly reliable adaptive temperature-regulating immersion battery module, which includes a housing assembly, the housing assembly including a receiving cavity and a device compartment isolated from the receiving cavity, the receiving cavity containing coolant; a battery module body, which is immersed in the receiving cavity and sealed through the receiving cavity; a reversing temperature control assembly, which is disposed in the battery module body and sealed through the receiving cavity; a BMS, which is fixedly disposed in the device compartment; a gas-liquid valve assembly, which is sealed through the device compartment and communicates with the outside and the receiving cavity respectively; and an electronic level gauge, which is sealed through the device compartment and communicates with the receiving cavity. The device includes: a coolant contacting the battery module; a conductivity monitor, which is sealed and installed throughout the device compartment and in contact with the coolant in the housing cavity; a commutation temperature control assembly comprising multiple commutation temperature control plates, which are spaced apart within the battery module body; a first connecting pipe mechanism and a second connecting pipe mechanism, respectively located on opposite sides of the multiple commutation temperature control plates, which are connected to the multiple commutation temperature control plates; and a temperature control commutation regulator fixedly and sealed on the inner wall of the housing cavity. The first connecting pipe mechanism and the second connecting pipe mechanism pass through the temperature control commutation regulator and the housing cavity sequentially, and the temperature control commutation regulator can perform commutation operations on the coolant entering and exiting the first connecting pipe mechanism and the second connecting pipe mechanism. The data table showing the temperature change of the immersion fluid level in this immersion battery module is shown below. Figure 1As shown, during cyclic charging and discharging, alternating high and low temperatures cause corrosion of some components in the submerged battery module, producing fine particles that mix with the immersion fluid. Over time, this contaminates the immersion fluid, reducing its insulation performance and significantly increasing the risk of short circuits and fires. Furthermore, the immersion fluid in the submerged battery module undergoes thermal expansion and contraction under extreme cold and heat conditions. At higher temperatures, the fluid expands, causing significant pressure buildup within the sealed battery module or leakage from the top cover gaps. Current technology only addresses this by increasing the battery module height to ensure the fluid level fully submerges the aluminum busbars while maintaining a greater distance between the fluid level and the top cover, thus increasing the overall height of the energy storage cabinet. At lower temperatures, the fluid contracts, preventing complete coverage of the battery busbars and terminals, reducing insulation and heat dissipation between the busbars and potentially leading to high-temperature runaway in commercial and industrial energy storage cabinets. Therefore, a high-safety, self-controlled immersion fluid commercial and industrial energy storage cabinet is provided to address these issues. Summary of the Invention

[0004] One of the objectives of this invention is to provide a high-safety, self-controlled immersion liquid for industrial and commercial energy storage cabinets, so as to solve the problem that the immersion liquid level of the submerged battery module in existing industrial and commercial energy storage cabinets cannot be automatically adjusted.

[0005] The present invention provides a high-safety, self-controlled immersion liquid industrial and commercial energy storage cabinet, which can be achieved through the following technical solutions: This invention discloses a high-safety self-controlled immersion liquid industrial and commercial energy storage cabinet comprising: Cabinet components; Multiple submersible battery modules are sequentially fixedly installed in the cabinet assembly; A water-cooled unit is fixedly installed in the cabinet assembly and is respectively sealed and connected to multiple immersion battery modules; Gas-liquid pipelines are longitudinally fixedly installed through the cabinet assembly and can be sealed and connected to multiple immersion battery modules respectively. The immersion liquid self-regulating assembly includes a housing fixedly disposed within the cabinet assembly. A partition is fixedly disposed within the housing, dividing the housing into an independent filtration chamber and a storage chamber. The filtration chamber is capable of being sealed and connected to the gas-liquid pipeline. A microchannel filter plate is detachably and fixedly disposed within the filtration chamber. A variable frequency reversible pump is disposed at the bottom of the filtration chamber and at the communication position between the filtration chamber and the storage chamber, capable of forward and reverse rotation, allowing the immersion liquid to switch its inflow and outflow direction between the filtration chamber and the storage chamber.

[0006] In one embodiment, the upper and lower ends of the filter cavity are respectively provided with a liquid inlet valve and a liquid return valve, and the liquid inlet valve and the liquid return valve can be sealed and connected to the gas-liquid pipeline.

[0007] In one embodiment, a first solenoid valve is provided in the liquid inlet valve port. When the conductivity monitor on the immersion battery module issues an alarm signal and the three-way valve inside the gas-liquid valve assembly switches to the liquid passage, the liquid inlet valve port opens and is sealed and connected to the gas-liquid pipeline.

[0008] In one embodiment, a second solenoid valve is provided in the return valve port. The return valve port will only open when a signal for filling is received that the inlet valve port is open and liquid filling is being performed. The return valve port will close when an alarm signal for high liquid level is received from the electronic level gauge in the immersion battery module.

[0009] In one embodiment, the microchannel filter plate is made of a honeycomb interwoven porous material made of carbon powder and oil polymer, and its shape is trapezoidal with a sloping surface from one side near the liquid inlet valve to the other side.

[0010] In one embodiment, a conductivity detection probe is provided at the bottom of the filter cavity.

[0011] In one embodiment, the high-safety self-regulating immersion liquid industrial and commercial energy storage cabinet of the present invention further includes a gas monitor, a logic humidity controller, a PCS converter, and an EMS electrical controller; the gas monitor is fixedly installed on the top of the cabinet assembly and is sealed and connected to the top of the gas-liquid pipeline; the logic humidity controller, the PCS converter, and the EMS electrical controller are respectively fixedly installed in the cabinet assembly, and the logic humidity controller and the outlet temperature of the water-cooled unit are linked for temperature control; the EMS electrical controller is electrically connected to multiple immersion battery modules, the water-cooled unit, the immersion liquid self-regulating component, the gas monitor, the logic humidity controller, and the PCS converter.

[0012] In one embodiment, the gas-liquid pipeline includes a main pipeline and multiple branch pipelines that are sealed and connected to the main pipeline; the bottom of the main pipeline passes through the cabinet assembly and its bottom connector is detachably and sealed and connected to the immersion liquid container, and its top is sealed and connected to the gas monitor; the main pipeline can be sealed and connected to multiple immersion battery modules and the immersion liquid self-regulating assembly respectively through the corresponding branch pipelines.

[0013] In one embodiment, the gas monitor adopts a one-way dustproof design, which allows the gas in the gas-liquid pipeline to be discharged outwards, but does not allow the liquid in the gas-liquid pipeline to be discharged outwards, and prevents external gas, liquid and dust from entering inwards; the gas monitor is equipped with sensors that can monitor hydrogen, carbon monoxide and carbon dioxide in real time.

[0014] In one embodiment, the cabinet assembly includes a cabinet body and a cabinet door that is rotatably and fixedly connected to the opening of the cabinet body. Sheet metal plates are respectively provided on the inner and outer sides of the cabinet body and the cabinet door, and a fireproof and heat-insulating plate is provided between the two sheet metal plates. The EMS electrical controller is fixedly installed on the inner side of the cabinet door.

[0015] Compared with existing technologies, the advantages of this invention's high-safety self-controlled immersion liquid industrial and commercial energy storage cabinet are as follows: This invention discloses a high-safety self-controlled immersion liquid industrial and commercial energy storage cabinet. Through the combination of a quick-release, self-sealing gas-liquid pipeline and an immersion liquid self-adjusting component, it can quickly and automatically fill or drain the immersion liquid in the immersion battery module. This automatically controls the rise or fall of the immersion liquid level in the immersion battery module under extreme climatic temperatures, effectively ensuring control over the immersion liquid level. This effectively solves the problem of the inability to automatically adjust the immersion liquid level in existing industrial and commercial energy storage cabinets. Furthermore, it allows for a smaller immersion battery module design, thereby reducing the height of the industrial and commercial energy storage cabinet, saving space, and increasing volumetric energy density. Simultaneously, by detachably incorporating a microchannel filter plate in the immersion liquid self-adjusting component, impurities in the immersion liquid are filtered, achieving automatic purification of the immersion liquid. This invention discloses a high-safety self-controlled immersion liquid industrial and commercial energy storage cabinet. By setting up a unidirectional gas monitor, the gas monitor can monitor the gas concentration generated by thermal runaway in real time. At the same time, in the early stage of thermal runaway, the gas monitor and gas-liquid pipeline work together to timely discharge the gas generated in the thermal runaway battery module, preventing the explosion caused by the rapid increase of internal pressure. Meanwhile, the logic humidity controller can not only monitor the air humidity inside the cabinet components in real time, but also link with the outlet temperature of the water-cooled unit to control the temperature, thereby adjusting the relative humidity in the cabinet components and the outlet temperature of the water-cooled unit to achieve a dynamic balance with minimal condensation. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a data table showing how the level of the immersion liquid changes with temperature in an immersion battery module; Figure 2This is a first-view internal structural diagram of a high-safety self-controlled immersion liquid industrial and commercial energy storage cabinet of the present invention, including an immersion liquid self-adjustment component; Figure 3 This is a second-view internal structural schematic diagram of a high-safety self-controlled immersion liquid industrial and commercial energy storage cabinet according to the present invention; Figure 4 This is a schematic diagram of the structure of the immersion liquid self-adjusting component; Figure 5 This is a flowchart illustrating the control strategy of a high-safety self-controlled immersion liquid industrial and commercial energy storage cabinet according to the present invention; Figure 6 This invention presents a high-rate charge / discharge thermal simulation temperature cloud map of an immersion battery module in a high-safety self-controlled immersion liquid industrial and commercial energy storage cabinet.

[0018] The diagram indicates the following: 10, Industrial and Commercial Energy Storage Cabinet; 11, Cabinet Components; 111, Cabinet Body; 112, Cabinet Door; 113, Support Block; 12, Immersed Battery Module; 13, Water-Cooled Unit; 131, Liquid Outlet Pipeline; 1311, Flow Valve; 132, Liquid Return Pipeline; 14, Gas-Liquid Pipeline; 15, Immersed Liquid Self-Regulating Component; 151, Cabinet; 1511, Partition Plate; 1512, Filter Chamber; 15121, Liquid Inlet Valve; 15122, Liquid Return Valve; 1513, Liquid Storage Chamber; 152, Microchannel Filter Plate; 153, Variable Frequency Reversible Pump; 16, Gas Monitor; 17, Logic Humidifier; 18, PCS Converter; 19, EMS Electrical Controller. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0021] Please see Figures 2-4As shown, the present invention discloses a high-safety self-regulating immersion liquid industrial and commercial energy storage cabinet 10, comprising a cabinet assembly 11, multiple immersion battery modules 12, a water-cooled unit 13, gas-liquid pipelines 14, an immersion liquid self-regulating component 15, a gas detector 16, a logic humidity controller 17, a PCS converter 18, and an EMS electrical controller 19. The cabinet assembly 11 is a hollow cavity, serving as the supporting and accommodating body. Multiple immersion battery modules 12 are stacked and fixedly arranged in the cabinet assembly 11, performing energy storage operations through the multiple immersion battery modules 12. The water-cooled unit 13 is fixedly arranged in the cabinet assembly 11 and is sealed and connected to the multiple immersion battery modules 12, simultaneously performing active heat dissipation operations on the multiple immersion battery modules 12. The gas-liquid pipelines 14 are longitudinally fixedly arranged through the cabinet assembly 11 and are respectively capable of being sealed and connected to the multiple immersion battery modules 12. The immersion liquid self-regulating component 15 is fixedly arranged in the cabinet assembly 11 and is capable of being connected to the multiple immersion battery modules 12. The gas-liquid pipeline 14 is sealed and connected, and the immersion liquid self-regulating component 15 automatically adjusts the immersion liquid level in multiple immersion battery modules 12. The gas monitor 16 is fixedly installed on the top of the cabinet assembly 11 and sealed and connected to one end of the gas-liquid pipeline 14. The gas monitor 16 monitors the concentration of various gases in the gas-liquid pipeline 14 in real time. The logic humidity controller 17, PCS converter 18, and EMS electrical controller 19 are fixedly installed in the cabinet assembly 11. The logic humidity controller 17 can automatically adjust the humidity in the cabinet assembly 11, thereby effectively preventing condensation on the surface of multiple immersion battery modules 12. The PCS converter 18 provides different voltages and currents to each electrical device. The EMS electrical controller 19 is electrically connected to multiple immersion battery modules 12, water-cooled unit 13, immersion liquid self-regulating component 15, gas monitor 16, logic humidity controller 17, and PCS converter 18.

[0022] Please see Figure 2 and Figure 3 As shown, in this embodiment, the cabinet assembly 11 includes a cabinet body 111 and a cabinet door 112. The cabinet body 111 is a hollow rectangular cavity with one open end. The cabinet door 112 is rotatably and fixedly connected to the opening of the cabinet body 111, forming a hollow and sealed cavity. Specifically, sheet metal plates are provided on both the inner and outer sides of the cabinet body 111 and the cabinet door 112, and a fireproof and heat-insulating plate is provided between the two sheet metal plates. The fireproof and heat-insulating plate is made of fire-resistant and heat-insulating material that meets fire resistance standards, thereby realizing the heat insulation and fire resistance functions of the cabinet assembly 11. A support block 113 is provided at the bottom of the cabinet body 111 to support the industrial and commercial energy storage cabinet 10.

[0023] Please see Figure 2 and Figure 3As shown, in this embodiment, the submersible battery module 12 adopts existing technology, which includes a housing assembly, a battery module body, a commutation temperature control assembly, a BMS, a gas-liquid valve assembly, an electronic level gauge, a conductivity monitor, and the commutation temperature control assembly. The housing assembly includes a receiving cavity and a device compartment isolated from the receiving cavity, the receiving cavity containing coolant. The battery module body is submerged in the receiving cavity and sealed through the receiving cavity. The commutation temperature control assembly is disposed in the battery module body and sealed through the receiving cavity. The BMS is fixedly disposed in the device compartment. The gas-liquid valve assembly is sealed through the device compartment and communicates with the outside and the receiving cavity respectively. The electronic level gauge is sealed through the device compartment. The device is located in the chamber and in contact with the coolant in the containment cavity; the conductivity monitor is sealed and installed through the device chamber and in contact with the coolant in the containment cavity; the commutation temperature control assembly includes multiple commutation temperature control plates, which are spaced apart in the battery module body; a first connecting pipe mechanism and a second connecting pipe mechanism are respectively installed on opposite sides of the multiple commutation temperature control plates, and both are connected to the multiple commutation temperature control plates; a temperature control commutation regulator is fixedly and sealed on the inner wall of the containment cavity, and the first connecting pipe mechanism and the second connecting pipe mechanism pass through the temperature control commutation regulator and the containment cavity in sequence, and the temperature control commutation regulator can perform commutation operation on the coolant entering and exiting the first connecting pipe mechanism and the second connecting pipe mechanism.

[0024] Please see Figure 2 and Figure 3 As shown, in this embodiment, the water-cooled unit 13 also adopts existing technology. It can cool the coolant heated by the submerged battery module 12 by refrigeration, and can also provide liquid supply pressure so that the cooled coolant can be delivered to the submerged battery module 12 again, so that the submerged battery module 12 can achieve active cooling and heat dissipation operation. The water-cooled unit 13 is provided with a sealed connection between an outlet pipe 131 and a return pipe 132. The outlet pipe 131 and the return pipe 132 are respectively sealed and connected to multiple submerged battery modules 12. The outlet temperature of the outlet pipe 131 is adjustable and a flow valve 1311 is provided on it. The flow valve 1311 has built-in communication and real-time temperature monitoring functions and is electrically connected to the EMS electrical controller 19.

[0025] Please see Figure 2 and Figure 3As shown, in this embodiment, the gas-liquid pipeline 14 is made of pressure- and temperature-resistant nylon material, and includes a main pipeline and multiple branch pipelines that are sealed and connected to the main pipeline. The bottom of the main pipeline passes through the cabinet assembly 11 and its bottom connector is detachably and sealed to the immersion liquid container located outside the cabinet assembly 11. The bottom connector is used to fill and drain the immersion liquid through the gas-liquid pipeline 14. Specifically, the bottom connector is a quick-release self-sealing connector. The top of the main pipeline is sealed and connected to the gas detector 16. The main pipeline can be sealed and connected to multiple immersion battery modules 12 and immersion liquid self-regulating components 15 through the corresponding branch pipelines.

[0026] Please see Figure 2 and Figure 4 As shown, in this embodiment, the immersion liquid self-regulating assembly 15 includes a housing 151, a microchannel filter plate 152, and a variable frequency reversible pump 153. The housing 151 is fixedly installed in the cabinet assembly 11. It is a hollow sealed cavity that can be sealed and connected to the gas-liquid pipeline 14. A partition 1511 is fixedly installed inside the housing, which divides the housing 151 into an independent filter cavity 1512 and a liquid storage cavity 1513. The microchannel filter plate 152 is detachable. The filter is fixedly installed in the filter chamber 1512, and the microchannel filter plate 152 filters the immersion liquid entering the filter chamber 1512. The variable frequency reversible pump 153 is installed at the bottom of the filter chamber 1512 and at the connection position of the liquid storage chamber 1513 and is electrically connected to the EMS electrical controller 19. The forward and reverse rotation of the variable frequency reversible pump 153 realizes the switching operation of the immersion liquid in and out between the filter chamber 1512 and the liquid storage chamber 1513.

[0027] Please see Figure 4As shown, specifically, the upper and lower ends of the filter chamber 1512 are respectively provided with an inlet valve port 15121 and a return valve port 15122; the inlet valve port 15121 is provided with a first solenoid valve, which is electrically connected to the EMS electrical controller 19 and is normally closed. The inlet valve port 15121 will only open when it receives an alarm signal from the conductivity monitor on the submerged battery module 12 and the three-way valve inside the gas-liquid valve assembly switches to the liquid passage pipe; the return valve port 15122 is provided with a second solenoid valve, which is electrically connected to the EMS electrical controller 19 and is normally closed. The return valve port 15122 will only open when it receives a signal to open the inlet valve port 15121 and start filling with liquid, and will close when it receives an alarm signal from the electronic level gauge in the submerged battery module 12 indicating a high liquid level. Preferably, a conductivity detection probe is provided at the bottom of the filter chamber 1512 to detect in real time whether the immersion liquid filtered by the microchannel filter plate 152 meets the insulation requirements. If the conductivity is qualified, the return valve port 15122 is opened or the frequency converter reversible pump 153 rotates clockwise. If the conductivity is unqualified, an alarm signal to replace the microchannel filter plate 152 is issued. The microchannel filter plate 152 is replaced or cleaned manually until the alarm is cleared.

[0028] Please see Figure 4As shown, specifically, the microchannel filter plate 152 is made of a honeycomb interwoven porous material composed of carbon powder and grease polymer. It can filter out tiny particles in the immersion liquid. At the same time, the material does not react with the immersion liquid and has the characteristics of high temperature resistance, corrosion resistance and non-stick surface. The immersion liquid filters impurities from the top to the bottom of the microchannel filter plate 152. The immersion liquid also has the function of carbon adsorption to adsorb color from the microchannel filter plate 152. The microchannel filter plate 152 has a trapezoidal shape and a sloping surface from one side near the liquid inlet valve 15121 to the other side. When the immersion liquid enters the filter chamber 1512, it can penetrate evenly from the entire sloping surface, thereby achieving a uniform filtration operation with the largest area. Specifically, the variable frequency reversible pump 153 switches the direction of the immersion liquid between the filter chamber 1512 and the storage chamber 1513 by rotating its impeller clockwise and counterclockwise. The variable frequency reversible pump 153 is generally in a closed state. When it receives a filling signal, the impeller rotates clockwise, allowing the immersion liquid to enter the storage chamber 1513 from the filter chamber 1512. When it receives a low-level alarm signal from the electronic level gauge in the submersible battery module 12, the impeller rotates counterclockwise, allowing the immersion liquid to enter the filter chamber 1512 from the storage chamber 1513 and then flow into the filter chamber 1512 via the return valve 15122 and the gas-liquid pipeline 14. The submersible battery module 12 automatically replenishes the submersible liquid until the low liquid level alarm of the electronic level gauge is deactivated and the variable frequency reversible pump 153 returns to its normally closed state. When the variable frequency reversible pump 153 receives a high liquid level alarm signal from the electronic level gauge in the submersible battery module 12, the impeller rotates clockwise, so that the submersible liquid enters the upper end of the filter chamber 1512 sequentially from the submersible battery module 12, the gas-liquid pipeline 14, and the liquid inlet valve 15121 for filtration. The filtered submersible liquid then enters the storage chamber 1513 for storage through the action of the variable frequency reversible pump 153 until the high liquid level alarm of the electronic level gauge in the submersible battery module 12 is deactivated and the variable frequency reversible pump 153 returns to its normally closed state.

[0029] Please see Figure 2 and Figure 3As shown, in this embodiment, the gas detector 16 is sealed and connected to the upper end of the gas-liquid pipeline 14 and electrically connected to the EMS electrical controller 19. The gas detector 16 adopts a one-way dustproof design, which is designed so that the gas in the gas-liquid pipeline 14 can be discharged outwards, the liquid in the gas-liquid pipeline 14 cannot be discharged outwards, and external gases, liquids, and dust cannot enter inwards. The gas detector 16 is equipped with sensors that can monitor hydrogen, carbon monoxide, and carbon dioxide in real time. When the gas detector 16 senses any one of the gases, it will transmit a signal to the EMS electrical controller 19, and the EMS electrical controller 19 will perform corresponding instruction actions according to the execution program imported into the design.

[0030] Please see Figure 3 As shown, in this embodiment, the logic humidity controller 17 is fixedly installed on the inside of the cabinet door 112 and electrically connected to the EMS electrical controller 19. It adopts existing technology, so its specific working process and product model are not described here, as long as they meet the requirements of this application. The logic humidity controller 17 can monitor the air humidity inside the cabinet assembly 11 in real time. While ensuring that the temperature of multiple submerged battery modules 12 does not exceed the temperature index, the logic humidity controller 17 can also perform linkage temperature control operation with the outlet temperature of the water-cooled unit 13, thereby adjusting the relative humidity in the cabinet assembly 11 and the outlet temperature of the water-cooled unit 13 to achieve the dynamic balance parameter value with the minimum condensation. The dynamic adjustment of the relative humidity in the cabinet assembly 11 and the outlet temperature of the water-cooled unit 13 by the logic humidity controller 17 is mainly based on the enthalpy-humidity diagram. The logic humidity controller 17 has an enthalpy-humidity diagram embedded in it, so that the logic humidity controller 17 can automatically control the optimal relative humidity and the outlet temperature of the water-cooled unit 13 according to the enthalpy-humidity diagram.

[0031] Please see Figure 3 As shown, in this embodiment, the PCS converter 18 adopts existing technology, so its specific working process and product model are not described in detail here, as long as they meet the requirements of this application; the EMS electrical controller 19 is electrically connected to multiple submerged battery modules 12, water-cooled unit 13, liquid inlet valve port 15121, liquid return valve port 15122, variable frequency reversible pump 153, gas monitor 16, logic humidity controller 17, and PCS converter 18 respectively. The control technology it adopts is all existing technology, so its specific control process and product model are not described in detail here, as long as they meet the requirements of this application; preferably, the EMS electrical controller 19 is fixedly installed on the inside of the cabinet door 112, so that the EMS electrical controller 19 will not be immediately damaged after the submerged battery module 12 thermally runs away, thereby maximizing the storage of data after thermal runaway.

[0032] Please see Figure 5 and Figure 6As shown, the specific operation control strategy of the industrial and commercial energy storage cabinet 10 with high safety self-controlled immersion liquid of the present invention is as follows: Figure 5 As shown, the high-rate charge / discharge thermal simulation temperature cloud map of the submerged battery module 12 is as follows: Figure 6 As shown.

[0033] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0034] The above embodiments merely illustrate several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A high-safety self-controlled immersion liquid industrial and commercial energy storage cabinet, characterized in that, include: Cabinet components; Multiple submersible battery modules are sequentially fixedly installed in the cabinet assembly; A water-cooled unit is fixedly installed in the cabinet assembly and is respectively sealed and connected to multiple immersion battery modules; Gas-liquid pipelines are longitudinally fixedly installed through the cabinet assembly and can be sealed and connected to multiple immersion battery modules respectively. An immersion fluid self-regulating assembly includes a housing fixedly disposed within a cabinet assembly. A partition is fixedly disposed within the housing, dividing it into an independent filtration chamber and a storage chamber. The filtration chamber is capable of being sealed and connected to the gas-liquid pipeline. A detachably fixed microchannel filter plate is disposed within the filtration chamber, filtering the coolant flowing through it. A variable frequency reversible pump is disposed at the bottom of the filtration chamber, connecting to the storage chamber, and is capable of reversing direction, allowing the immersion fluid to switch its inflow and outflow directions between the filtration chamber and the storage chamber.

2. The industrial and commercial energy storage cabinet with high-safety self-controlled immersion liquid according to claim 1, characterized in that, The filter chamber is provided with an inlet valve and a return valve at its upper and lower ends, respectively, and the inlet valve and the return valve can be sealed and connected to the gas-liquid pipeline.

3. The industrial and commercial energy storage cabinet with high-safety self-controlled immersion liquid according to claim 2, characterized in that, The liquid inlet valve is equipped with a first solenoid valve. When the conductivity monitor on the immersion battery module sends an alarm signal and the three-way valve inside the gas-liquid valve assembly switches to the liquid passage, the liquid inlet valve opens and is sealed and connected to the gas-liquid pipeline.

4. The industrial and commercial energy storage cabinet with high-safety self-controlled immersion liquid according to claim 3, characterized in that, The return valve is equipped with a second solenoid valve. The return valve will only open when the inlet valve is opened and a liquid filling signal is received. The return valve will close when the electronic level gauge in the immersion battery module is activated by a high liquid level alarm signal.

5. The industrial and commercial energy storage cabinet with high-safety self-controlled immersion liquid according to claim 2, characterized in that, The microchannel filter plate is made of a honeycomb interwoven pore material made of carbon powder and oil polymer. It has a trapezoidal shape and a sloping surface from one side near the liquid inlet valve to the other side.

6. The industrial and commercial energy storage cabinet with high-safety self-controlled immersion liquid according to claim 1, characterized in that, A conductivity detection probe is installed at the bottom of the filter chamber.

7. A high-safety self-controlled immersion liquid industrial and commercial energy storage cabinet according to any one of claims 1-6, characterized in that, It further includes a gas monitor, a logic humidity controller, a PCS converter, and an EMS electrical controller; the gas monitor is fixedly installed on the top of the cabinet assembly and is sealed and connected to the top of the gas-liquid pipeline; the logic humidity controller, the PCS converter, and the EMS electrical controller are respectively fixedly installed in the cabinet assembly, and the logic humidity controller and the outlet temperature of the water-cooled unit are linked for temperature control; the EMS electrical controller is electrically connected to multiple immersion battery modules, the water-cooled unit, the immersion liquid self-regulating component, the gas monitor, the logic humidity controller, and the PCS converter.

8. The industrial and commercial energy storage cabinet with high-safety self-controlled immersion liquid according to claim 7, characterized in that, The gas-liquid pipeline includes a main pipeline and multiple branch pipelines that are sealed and connected to the main pipeline; the bottom of the main pipeline passes through the cabinet assembly and its bottom connector is detachably and sealed to the immersion liquid container, and its top is sealed and connected to the gas monitor; the main pipeline can be sealed and connected to multiple immersion battery modules and the immersion liquid self-regulating assembly through the corresponding branch pipelines.

9. The industrial and commercial energy storage cabinet with high-safety self-controlled immersion liquid according to claim 7, characterized in that, The gas monitor adopts a one-way dustproof design, which allows the gas in the gas-liquid pipeline to be discharged outwards, but does not allow the liquid in the gas-liquid pipeline to be discharged outwards, and external gases, liquids and dust cannot enter inwards; the gas monitor is equipped with sensors that can monitor hydrogen, carbon monoxide and carbon dioxide in real time.

10. The industrial and commercial energy storage cabinet with high-safety self-controlled immersion liquid according to claim 7, characterized in that, The cabinet assembly includes a cabinet body and a cabinet door that is rotatably and fixedly connected to the opening of the cabinet body. Sheet metal plates are respectively provided on the inner and outer sides of the cabinet body and the cabinet door. A fireproof and heat-insulating plate is provided between the two sheet metal plates. The EMS electrical controller is fixedly installed on the inner side of the cabinet door.

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