CN220528436U - Electrical equipment, energy storage system and new energy storage system - Google Patents

Abstract

The application discloses electrical equipment, energy storage system and new forms of energy storage system belongs to energy storage system heat dissipation technical field. The electrical device includes: the wiring cabinet is provided with a liquid cooling plate; the outlet of the radiator is communicated with the inlet of the liquid cooling plate; the converter comprises a temperature control box and a converter body, wherein the temperature control box is provided with a liquid inlet and a liquid outlet, the liquid inlet is communicated with the liquid cooling plate, the liquid outlet is communicated with the radiator, cooling liquid is filled in the temperature control box, and the converter body is immersed in the cooling liquid; and the driving pump is used for driving the cooling liquid to circularly flow. Through the design of carrying out immersion type heat dissipation on the current transformer body, the heat exchange efficiency is greatly improved, so that the power density of the current transformer body is improved, the heat dissipation requirements of the wiring cabinet body and the current transformer body are met, and the use width of electrical equipment is increased.

Description

Electrical equipment, energy storage system and new energy storage system

Technical Field

The application belongs to the technical field of heat dissipation of energy storage systems, and particularly relates to electrical equipment, an energy storage system and a new energy storage system.

Background

The integration of converters into energy storage outdoor cabinets has become a trend, but the consequent problem of heat dissipation has become a challenge. Common converter cooling modes are air-cooled and cold plate type liquid cooling with glycol aqueous solution as cooling liquid.

The air-cooled type air conditioner mainly refrigerates through an air conditioner, and the cooling medium is air, so that the air-cooled type air conditioner has the advantages of large occupied area, low capacity density and poor adaptability to severe environments such as salt fog, sand wind and the like. The cold plate type liquid cooling structure using the glycol aqueous solution as the cooling liquid adopts the matching of the battery and the liquid cooling plate, and transfers heat to the cooling liquid for heat exchange through the radiator, wherein the heat exchange mode is single-sided heat exchange, the heat is transferred to the cooling liquid after passing through the shell of the battery module box body and the liquid cooling plate, and then the cooling liquid dissipates the heat through the radiator, so that the heat transfer links are more, the thermal resistance is large, the heat exchange efficiency is low, and the requirement on the performance of the radiator is higher.

Disclosure of Invention

The present application aims to solve at least one of the technical problems existing in the prior art. Therefore, the application provides an electrical equipment, an energy storage system and a new energy storage system, which greatly improve the heat exchange efficiency, so that the power density of the converter body is improved, the heat dissipation requirements of the wiring closet body and the converter body are met, and the use width of the electrical equipment is increased.

In a first aspect, the present application provides an electrical device comprising:

the wiring cabinet is provided with a liquid cooling plate;

the outlet of the radiator is communicated with the inlet of the liquid cooling plate;

the converter comprises a temperature control box and a converter body, wherein the temperature control box is provided with a liquid inlet and a liquid outlet, the liquid inlet is communicated with the liquid cooling plate, the liquid outlet is communicated with the radiator, cooling liquid is filled in the temperature control box, and the converter body is immersed in the cooling liquid;

and the driving pump is used for driving the cooling liquid to circularly flow.

According to the electrical equipment, through the design of carrying out immersion type heat dissipation to the converter body, compare in traditional liquid cooling heat dissipation and forced air cooling heat dissipation, improved heat exchange efficiency by a wide margin to improve the power density of converter body, and utilized terminal box and converter series connection radiating mode, satisfied the heat dissipation demand of terminal box body and converter body simultaneously, increased electrical equipment's width of use.

According to one embodiment of the application, the liquid inlet and the liquid outlet are arranged on the same side wall of the temperature control box in a separated mode.

According to one embodiment of the present application, the liquid inlet is arranged on the upper side of the same side wall of the temperature control box, the liquid outlet is arranged on the lower side of the same side wall of the temperature control box, and the liquid inlet and the liquid outlet are diagonally arranged.

According to one embodiment of the application, the side wall where the liquid inlet and the liquid outlet are located faces the wiring closet.

According to one embodiment of the present application, the plurality of converters, and the temperature control boxes of the plurality of converters are connected in parallel between the liquid cooling plate and the radiator.

According to one embodiment of the present application, the electrical device further comprises:

the temperature sensor is arranged on at least one of the wiring cabinet and the converter and is used for detecting working temperature;

and the controller is electrically connected with the temperature sensor and is used for controlling the driving pump based on the working temperature.

According to one embodiment of the present application, the electrical device further comprises:

the tray, the wiring cabinet with the converter is installed in the tray.

According to one embodiment of the present application, the cooling fluid is at least one of a fluorinated fluid, deionized water, and a non-flammable oil.

In a second aspect, the present application provides an energy storage system comprising:

such as any of the electrical devices described above.

According to the energy storage system, through the arrangement of the electrical equipment, the heat exchange efficiency is improved, so that the power density of the converter body is improved, the converter body can be integrated in the energy storage container, the volume energy density of the whole energy storage system is improved, the occupied area of the equipment is reduced, and the adaptability of the whole system in severe environments such as salt fog or sand wind and the like is greatly optimized.

In a third aspect, the present application provides a new energy storage system, comprising:

an energy storage system as described above;

and the new energy power generation device is electrically connected with the energy storage system.

According to the new energy storage system, through the arrangement of the energy storage system, the new energy storage system is automatically applicable under different load rates, and high efficiency is maintained in real time; the cooling liquid is immersed and isolated, so that the failure rate of the system is greatly reduced, and the maintenance cost of the system is reduced; meanwhile, the thermal power density is greatly improved, the civil engineering utilization rate is improved, and the regional limitation of site selection is relieved.

Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.

Drawings

The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, wherein:

fig. 1 is one of schematic structural diagrams of an electrical apparatus provided in an embodiment of the present application;

FIG. 2 is a second schematic structural diagram of an electrical device according to an embodiment of the present disclosure;

fig. 3 is a schematic structural diagram of a current transformer of an electrical device according to an embodiment of the present application;

fig. 4 is a graph of the operating temperature T of the electrical device provided in an embodiment of the present application as a function of the coolant flow Q.

Reference numerals:

the transformer comprises a wiring cabinet 100, a liquid cooling plate 110, a transformer 200, a liquid inlet 210, a liquid outlet 220 and a tray 300.

Detailed Description

Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.

The application discloses an electrical device.

An electrical apparatus according to an embodiment of the present application is described below with reference to fig. 1 to 4.

In some embodiments, as shown in fig. 1-2, an electrical device includes: a junction box 100, a radiator, a current transformer 200 and a drive pump.

The wiring closet 100 has a liquid cooling plate 110.

The wiring closet 100 may be used to connect various electrical components to wires and branch wires, as shown in fig. 1-2, the wiring closet 100 may include a wiring closet body and a liquid cooling plate 110, and the liquid cooling plate 110 may be used to perform liquid cooling heat dissipation for the wiring closet body.

As shown in fig. 1-2, the liquid cooling plate 110 may be mounted on a side wall of the terminal block body, and the connection manner between the liquid cooling plate 110 and the terminal block body may include, but is not limited to, a bolt connection, a rivet connection, or a snap connection, for example, in some embodiments, the connection manner between the liquid cooling plate 110 and the terminal block body is a bolt connection.

The liquid-cooled plate 110 may be a cavity-type liquid-cooled plate, a pressure-tube-type liquid-cooled plate, a friction-welding-type liquid-cooled plate, a vacuum brazing-type liquid-cooled plate, or the like, such as, in some embodiments, the liquid-cooled plate 110 is a pressure-tube-type liquid-cooled plate.

The outlet of the radiator communicates with the inlet of the liquid cooling plate 110.

The radiator may be used to assist in the heat release and temperature reduction of the high temperature coolant, and may be an air-cooled radiator, a heat pipe radiator, a liquid-cooled radiator, or the like, for example, in some embodiments, an air-cooled radiator.

In this embodiment, the high temperature coolant can get into the radiator through the import of radiator, the high temperature coolant can give the radiator with heat transfer through the mode of heat conduction, the radiator can give off the heat, become low temperature coolant after the high temperature coolant is exothermic, low temperature coolant can leave the radiator through the export of radiator, can get into in the liquid cooling board 110 through the import of liquid cooling board 110 after low temperature coolant leaves the radiator, in the in-process that low temperature coolant circulated in liquid cooling board 110, low temperature coolant can absorb the heat that the wiring cabinet body during operation produced.

The converter 200 comprises a temperature control box and a converter body, wherein the temperature control box is provided with a liquid inlet 210 and a liquid outlet 220, the liquid inlet 210 is communicated with the liquid cooling plate 110, the liquid outlet 220 is communicated with the radiator, cooling liquid is filled in the temperature control box, and the converter body is immersed in the cooling liquid.

The converter body can be used for changing voltage, frequency, phase number, electric quantity or other attributes of the power supply system to meet the power grid demand, and the temperature control box can be used for providing a containing cavity for cooling liquid to realize immersed liquid cooling heat dissipation of the converter body.

The driving pump is used for driving the cooling liquid to circularly flow.

The junction box 100, the radiator, the inverter 200, and the driving pump may be connected end to form a circulation loop through which the cooling liquid may circulate.

In actual implementation, as shown in fig. 1-2, the cyclic cooling process of the electrical device may be implemented as follows: the driving pump can drive the cooling liquid to circulate, the low temperature cooling liquid can get into in the liquid cooling plate 110, the heat that the wiring closet body during operation produced can be through heat conduction's mode transfer for liquid cooling plate 110, in the in-process that low temperature cooling liquid circulated in liquid cooling plate 110, low temperature cooling liquid can absorb this heat and become the medium temperature cooling liquid, after the wiring closet body accomplished the heat dissipation, the medium temperature cooling liquid can get into the control by temperature change box through inlet 210, the liquid level of the cooling liquid in the control by temperature change box constantly rises, until submerging the converter body in the control by temperature change box, the converter body directly exchanges heat with the electrical part that generates heat with the mode of generating heat through wholly soaking in the cooling liquid completely, become high temperature cooling liquid after the heat dissipation is accomplished to the converter body, high temperature cooling liquid can get into the radiator, after the radiator cools down to high temperature cooling liquid, the low temperature cooling liquid releases heat and can flow back to liquid cooling plate 110 again after leaving the radiator, thereby get into the circulation of cooling down again.

According to the electrical equipment provided by the embodiment of the application, through the design of carrying out immersion type heat dissipation on the current transformer body, compared with traditional liquid cooling heat dissipation and air cooling heat dissipation, the heat exchange efficiency is greatly improved, so that the power density of the current transformer body is improved, the heat dissipation mode of the wiring cabinet 100 and the current transformer 200 in series connection mode is utilized, the heat dissipation requirements of the wiring cabinet body and the current transformer body are met, and the use width of the electrical equipment is increased.

In some embodiments, as shown in fig. 1-3, the inlet 210 and the outlet 220 may be separately disposed on the same side wall of the temperature control box.

It can be appreciated that if the liquid inlet 210 and the liquid outlet 220 are respectively disposed on different side walls of the temperature control box, considering limitation of the guide rail type pipe arrangement, the liquid inlet 210 and the liquid outlet 220 disposed on different side walls of the temperature control box need to be provided with guide rails in different directions to meet pipe arrangement requirements, and meanwhile interference cannot be formed among a plurality of pipeline lines, so that difficulty, material cost and labor cost of pipe arrangement are greatly increased.

Under the condition that the liquid inlet 210 and the liquid outlet 220 are arranged on the same side wall of the temperature control box in a separated mode, guide rails in the same direction can be arranged when the liquid inlet pipe and the liquid outlet pipe are arranged, cross interference can not be formed on other pipeline lines, occupied space of the pipeline is reduced to the greatest extent, and difficulty in pipe distribution, material cost and labor cost are reduced.

In some embodiments, as shown in fig. 1-3, the liquid inlet 210 may be disposed on an upper side of the same sidewall of the temperature control box, the liquid outlet 220 may be disposed on a lower side of the same sidewall of the temperature control box, and the liquid inlet 210 and the liquid outlet 220 may be diagonally disposed.

It will be appreciated that if the liquid inlet 210 and the liquid outlet 220 are not diagonally disposed, in other words, the liquid inlet 210 and the liquid outlet 220 are located at the upper and lower portions of the same side wall of the temperature control box, the distance between the liquid inlet 210 and the liquid outlet 220 is too short, and the cooling liquid enters the temperature control box and then is discharged from the temperature control box after passing through a short circulation path, so that the circulation of the cooling liquid is insufficient and the heat dissipation effect is not expected.

In this embodiment, as shown in fig. 1 to 3, in the case that the liquid inlet 210 and the liquid outlet 220 may be diagonally arranged, the liquid inlet 210 may be connected to a cold water pipe, the liquid outlet 220 may be connected to a hot water pipe, the liquid inlet 210 may be located at the top of the first end of the same sidewall, the liquid outlet 220 may be located at the bottom of the second end of the same sidewall, a cooling liquid may be injected from the liquid inlet 210 through the cold water pipe, and the cooling liquid flows in the temperature control box to circulate so as to take away heat generated by the converter body, and finally a high-temperature cooling liquid may flow out from the liquid outlet 220 through the hot water pipe.

The electrical equipment that this embodiment provided, through the setting of business turn over liquid mode of above-mentioned upper and lower play, cooperation inlet 210 and liquid outlet 220 diagonal setting for the coolant liquid obtains abundant circulation at the control by temperature change case, and furthest promotes the radiating cooling effect of submergence formula, guarantees simultaneously and forms between cold water pipe and the hot-water line and dodges the relation, reduces construction cost.

In some embodiments, as shown in fig. 1-3, the side walls of the liquid inlet 210 and the liquid outlet 220 may face the junction box 100.

As shown in fig. 3, the shape of the temperature control box may be substantially square, i.e. the temperature control box may have four end-to-end side walls facing in four different directions, respectively, and the liquid inlet 210 and the liquid outlet 220 may be arranged in one of the side walls, which may face the junction box 100, i.e. both the liquid inlet 210 and the liquid outlet 220 face the junction box 100.

The following describes embodiments of the present application in detail from two different implementation angles, respectively.

1. The liquid cooling plate 110 is disposed at the same end as the liquid inlet 210.

In this embodiment, as shown in fig. 1, the liquid cooling plate 110 may be disposed at a first end of the cabinet body, the liquid inlet 210 may be disposed at a top of the first end of the temperature control box facing the sidewall of the cabinet 100, the liquid outlet 220 may be disposed at a bottom of the second end of the temperature control box facing the sidewall of the cabinet 100, and the liquid inlet 210 at the first end may be in communication with an outlet of the liquid cooling plate 110 also at the first end.

2. The liquid cooling plate 110 is arranged at the opposite end to the liquid inlet 210.

In this embodiment, as shown in fig. 2, the liquid cooling plate 110 may be disposed at the second end of the cabinet body, the liquid inlet 210 may be disposed at the top of the first end of the temperature control box facing the sidewall of the cabinet 100, the liquid outlet 220 may be disposed at the bottom of the second end of the temperature control box facing the sidewall of the cabinet 100, and the liquid inlet 210 at the first end may be in communication with the outlet of the liquid cooling plate 110 at the second end.

The electrical equipment that this application embodiment provided through the lateral wall orientation that above-mentioned inlet 210 and liquid outlet 220 are located setting, has avoided the intersection and the conflict of pipeline on plane and facade effectively, guarantees the rationality and the harmony of cloth pipe, has avoided the risk problem that long distance cloth pipe brought simultaneously, has shortened the total length of pipeline, has practiced thrift manufacturing cost.

In some embodiments, as shown in fig. 1-2, the converter 200 may be multiple, and the temperature control boxes of the multiple converters 200 may be connected in parallel between the liquid cooling plate 110 and the radiator.

Wherein the plurality represents 2 or more, for example, in some embodiments, as shown in fig. 1-2, the number of converters 200 is 2.

In this embodiment, as shown in fig. 1-2, the number of converters 200 may be plural, each of the plural converters 200 has an independent liquid inlet 210 and an independent liquid outlet 220, and correspondingly, the liquid cooling plate 110 has plural outlets, the outlets of the plural liquid cooling plates 110 are respectively communicated with the plural liquid inlets 210, the plural liquid outlets 220 are respectively communicated with the radiator, and the cooling liquid output from the liquid cooling plate 110 is distributed more uniformly into the temperature control boxes of the plural converters 200 through the plural liquid inlets 210.

According to the electrical equipment provided by the embodiment of the application, through the arrangement of the number of the converters 200, the parallel connection structure design is matched, the number limitation of the submerged radiating objects is relieved, the power density of the converters 200 is improved, cooling liquid is uniformly distributed in the temperature control boxes of the converters 200 in the same time period, and the phenomenon that the converters are heated unevenly is relieved.

In some embodiments, the electrical device may further include: a temperature sensor and a controller.

A temperature sensor may be installed at least one of the junction box 100 and the inverter 200, and the temperature sensor may be used to detect an operating temperature.

In some embodiments, the temperature sensor may be installed in the junction box 100, where the operating temperature detected by the temperature sensor is the operating temperature of the junction box 100; in other embodiments, the temperature sensor may be mounted to the converter 200, where the operating temperature detected by the temperature sensor is the operating temperature of the converter 200; in still other embodiments, temperature sensors may be installed at the junction box 100 and the converter 200, where the operating temperature may be selected as the maximum of the operating temperature of the junction box 100 and the operating temperature of the converter 200, or where the operating temperature detected by the temperature sensors may be selected as the average of the operating temperature of the junction box 100 and the operating temperature of the converter 200.

A controller may be electrically connected to the temperature sensor, and the controller may be configured to control the drive pump based on the operating temperature.

The controller may control the frequency of the drive pump in relation to the flow rate of the coolant, the flow rate of the coolant increasing when the controller controls the drive pump to increase and the flow rate of the coolant decreasing when the controller controls the drive pump to decrease.

As shown in fig. 4, T is the operating temperature detected by the temperature sensor, Q is the flow rate of the coolant, and it is clear from the figure that the operating temperature T and the flow rate Q of the coolant are in positive correlation, specifically, when the operating temperature T increases, the flow rate Q of the coolant required for heat dissipation increases, and when the operating temperature T decreases, the flow rate Q of the coolant required for heat dissipation decreases.

In actual execution, the normal working temperature range is set to be T1-T2, data is fed back to the controller after the temperature sensor detects the working temperature Ti at the moment, when the working temperature Ti is more than T2, the controller can control the frequency of the driving pump to be improved, the flow Qi of cooling liquid required by heat dissipation is obtained according to the substitution of Ti into the functional relation diagram, and the flow Q-Qi of the cooling liquid is increased until the T falls in the normal working temperature range again; when the working temperature Tj is less than T2, the controller can control the frequency of the driving pump to be reduced, obtain the flow Qj of the cooling liquid required by heat dissipation according to the substitution of Tj into the functional relation diagram, and reduce the flow Q to Qj of the cooling liquid until the T falls in the normal working temperature range again.

According to the electrical equipment provided by the embodiment of the application, through the arrangement of the temperature sensor and the controller, the function relation between the working temperature T and the flow Q of the cooling liquid is utilized, and the flow Q of the cooling liquid can be dynamically adjusted according to the working temperature T, so that the accuracy of temperature control is improved.

In some embodiments, as shown in fig. 1-2, the electrical device may further include: a tray 300.

The junction box 100 and the inverter 200 may be mounted to the tray 300.

The tray 300 may be used to support and cradle the cabinet 100 and the converter 200. The tray 300 may be made of, but is not limited to, stainless steel, aluminum alloy, or titanium alloy, etc., such as stainless steel in some embodiments.

The connection between the terminal block 100 and the tray 300 may include a screw connection, a snap connection, a pin connection, or the like, such as, in some embodiments, a snap connection between the terminal block 100 and the tray 300.

The connection between the current transformer 200 and the tray 300 may include a screw connection, a snap connection, a pin connection, or the like, such as, in some embodiments, a snap connection between the current transformer 200 and the tray 300.

In this embodiment, the tray 300 may be custom designed, specifically, the number of converters 200 may be plural, and the wiring closet 100 and the plurality of converters 200 may be mounted on the tray 300, and the required size of the tray 300 may be different due to the different number of converters 200, so that the size of the tray 300 may not be fixed when the tray 300 is processed, and the tray 300 may be custom manufactured according to the specific requirements of the project.

According to the electrical equipment provided by the embodiment of the application, through the arrangement of the tray 300, the installation of the wiring cabinet 100 and the converter 200 is realized, the structural layout is compact and reasonable, the functional partition is clear, the volume energy density of the whole electrical equipment is improved, meanwhile, the tray 300 is subjected to customized design, and the structural capacity of the electrical equipment is enlarged.

In some embodiments, the cooling fluid may be at least one of a fluorinated fluid, deionized water, and a non-flammable oil.

Wherein the fluorinated liquid may include, but is not limited to, hydrochlorofluorocarbons, hydrofluorocarbons, perfluorocarbons, or hydrofluoroethers (and the like, the non-flammable oils may include, but are not limited to, mineral oils, synthetic oils, or natural oils, and the like, such as, in some embodiments, the cooling liquid is a fluorinated liquid.

According to the electrical equipment provided by the embodiment of the application, through the arrangement of the types of the cooling liquid, the excellent electrical insulation and heat conductivity of the material are utilized, a perfect compatible relation is formed between the material and the converter body, and the maximization of flowing heat dissipation can be completed in a temperature control system.

The application also discloses an energy storage system.

In some embodiments, the energy storage system comprises: such as any of the electrical devices described above.

The energy storage system that this application embodiment provided through the setting of above-mentioned electrical equipment, has improved heat exchange efficiency to improved the power density of converter body, and can integrate in energy storage container, and then improved whole energy storage system's volume energy density, and equipment area reduces, has optimized the adaptability of entire system in severe environment such as salt fog or sand wind by a wide margin.

The application also discloses a new energy storage system.

In some embodiments, the new energy storage system comprises: new energy power generation device and energy storage system as above.

The new energy power generation device is electrically connected with the energy storage system.

The new energy power generation device may include, but is not limited to, a photovoltaic power generation device, a hydro-power generation device, a wind power generation device, a tidal power generation device, or the like, without limitation.

According to the new energy storage system provided by the embodiment of the application, through the arrangement of the energy storage system, the new energy storage system is automatically applicable under different load rates, and the high efficiency is maintained in real time; the cooling liquid is immersed and isolated, so that the failure rate of the system is greatly reduced, and the maintenance cost of the system is reduced; meanwhile, the thermal power density is greatly improved, the civil engineering utilization rate is improved, and the regional limitation of site selection is relieved.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present application may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type and not limited to the number of objects, e.g., the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.

In the description of the present application, it should be understood that the terms "length," "width," "thickness," "upper," "lower," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements being referred to must have a particular orientation, be configured and operated in a particular orientation, and are therefore not to be construed as limiting the present application.

In the description of the present application, "a first feature", "a second feature" may include one or more of the features.

In the description of the present application, the meaning of "plurality" is two or more.

In the description of this application, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact by another feature therebetween.

In the description of this application, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present application have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the application, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. An electrical device, comprising:

the wiring cabinet is provided with a liquid cooling plate;

the outlet of the radiator is communicated with the inlet of the liquid cooling plate;

the converter comprises a temperature control box and a converter body, wherein the temperature control box is provided with a liquid inlet and a liquid outlet, the liquid inlet is communicated with the liquid cooling plate, the liquid outlet is communicated with the radiator, cooling liquid is filled in the temperature control box, and the converter body is immersed in the cooling liquid;

and the driving pump is used for driving the cooling liquid to circularly flow.

2. The electrical device of claim 1, wherein the liquid inlet and liquid outlet are arranged separately on the same side wall of the temperature control box.

3. The electrical apparatus of claim 2, wherein the liquid inlet is disposed on an upper side of a same side wall of the temperature control box, the liquid outlet is disposed on a lower side of a same side wall of the temperature control box, and the liquid inlet and the liquid outlet are diagonally disposed.

4. An electrical device according to claim 3, wherein the side walls of the liquid inlet and the liquid outlet face the junction box.

5. The electrical device of claim 1, wherein the plurality of current transformers is provided, and a plurality of temperature control boxes of the current transformers are connected in parallel between the liquid cooling plate and the heat sink.

6. The electrical device of claim 1, further comprising:

the temperature sensor is arranged on at least one of the wiring cabinet and the converter and is used for detecting working temperature;

and the controller is electrically connected with the temperature sensor and is used for controlling the driving pump based on the working temperature.

7. The electrical device of any one of claims 1-5, further comprising:

the tray, the wiring cabinet with the converter is installed in the tray.

8. The electrical device of any one of claims 1-5, wherein the cooling fluid is at least one of a fluorinated fluid, deionized water, and a non-flammable oil.

9. An energy storage system, comprising:

electrical device according to any one of claims 1-8.

10. A new energy storage system, comprising:

the energy storage system of claim 9;

and the new energy power generation device is electrically connected with the energy storage system.