Energy storage cabinet and energy storage electrical cabinet

Abstract

An energy storage cabinet (1) and an energy storage electrical cabinet (10). The energy storage cabinet (1) comprises: a cabinet body (11); a barrier plate (13), which divides a converter compartment (115) into a cold air cavity (1151) and a hot air cavity (1152), the cold air cavity (1151) being in communication with air inlets (1111), and the hot air cavity (1152) being in communication with air outlets (1121); and an energy storage converter (14), which is provided with a heat dissipation air duct, air intake ports (141) being in communication with the cold air cavity (1151), and air discharge ports (142) being in communication with the hot air cavity (1152).

Description

Energy storage cabinets and energy storage cabinets

[0001] Priority information

[0002] This application claims priority and benefits of patent application No. 202311866839.9 filed with the State Intellectual Property Office of China on December 29, 2023, and the entire text of which is incorporated herein by reference. Technical Field

[0003] The present application relates to the field of energy storage technology, and in particular to an energy storage cabinet and an energy storage electric cabinet. Background Art

[0004] An energy storage cabinet is a device for storing electrical energy. An energy storage cabinet usually includes a cabinet body and energy storage batteries, energy storage converters, etc. arranged in the cabinet body. The energy storage batteries and energy storage converters are usually arranged in two different chambers in the cabinet body to avoid the generated heat from affecting each other. As for the chamber where the energy storage converter is placed, the front side panel and the back side panel of the cabinet body respectively have an air inlet and an air outlet connected to the chamber, and then cold air is blown in along the air inlet to cool the energy storage converter. The cooled hot air flows out of the chamber along the air outlet to ensure the stability of the operation of the energy storage converter. However, when the hot air flows out of the chamber along the air outlet, part of the hot air flows back into the chamber due to the obstruction of the hot air by the back side panel, thereby affecting the heat dissipation effect of the energy storage converter, causing a safety hazard during the operation of the energy storage converter.

[0005] Summary of the Invention

[0006] A main purpose of the present application is to provide an energy storage cabinet and an energy storage electrical cabinet, which can effectively ensure the heat dissipation effect of the energy storage converter in the energy storage cabinet and improve the safety of operation.

[0007] To achieve the above application objectives, this application adopts the following technical solutions:

[0008] According to one aspect of the present application, there is provided an energy storage cabinet, comprising: a cabinet body, wherein a partition is provided in the cabinet body, the internal space of the cabinet body comprises a battery compartment and a converter compartment separated by the partition, and the side panels of the cabinet body have an air inlet and an air outlet connected to the converter compartment; a baffle, located in the converter compartment, and separating the converter compartment into a cold air chamber and a hot air chamber, the cold air chamber is connected to the air inlet, and the hot air chamber is connected to the air outlet; an energy storage converter, located in the converter compartment, and having a heat dissipation air duct, the heat dissipation air duct comprising an air inlet port located at the air inlet end of the energy storage converter and an air outlet port located at the air outlet end, the air inlet port is connected to the cold air chamber, and the air outlet port is connected to the hot air chamber.

[0009] In the embodiment of the present application, a baffle is provided in the converter compartment to separate the converter compartment into a cold air chamber and a hot air chamber based on the air outlet port of the energy storage inverter, so that the cold air enters the cold air chamber along the air inlet, and then enters the heat dissipation duct of the energy storage inverter along the air inlet port for heat exchange. The hot air after the heat exchange directly enters the hot air chamber along the air outlet port, and then directly flows out of the converter compartment along the air outlet, thereby avoiding the backflow of hot air, ensuring the heat dissipation effect of the energy storage inverter, and further ensuring that the energy storage inverter can operate at a lower ambient temperature, thereby improving the stability and safety of the operation of the energy storage inverter.

[0010] According to one aspect of the present application, an energy storage cabinet is provided, comprising: the energy storage cabinet described in the above aspect, wherein the battery compartment has a storage rack; an energy storage unit is located on the storage rack and electrically connected to the energy storage converter.

[0011] In the implementation manner of the present application, combined with the above-mentioned energy storage cabinet, the stability and safety of the operation of the energy storage cabinet can be effectively guaranteed.

[0012] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The above and other features and advantages of the present application will become more apparent by describing in detail example embodiments thereof with reference to the accompanying drawings.

[0014] FIG1 is a schematic structural diagram of a household energy storage system according to an exemplary embodiment.

[0015] FIG2 is a schematic diagram of a main structural view of an energy storage cabinet according to an exemplary embodiment.

[0016] FIG3 is a schematic diagram showing the internal structure of an energy storage cabinet according to an exemplary embodiment.

[0017] FIG4 is a schematic diagram of the internal axial structure of an energy storage cabinet according to related art.

[0018] FIG5 is a simulation diagram of the airflow in a flow conversion compartment of an energy storage cabinet according to related art.

[0019] FIG6 is a schematic diagram of the internal front view structure of an energy storage cabinet according to an exemplary embodiment.

[0020] FIG7 is a schematic diagram showing the internal front-axle-side structure of an energy storage cabinet according to an exemplary embodiment.

[0021] FIG8 is a schematic diagram showing the internal rear-axle-side structure of an energy storage cabinet according to an exemplary embodiment.

[0022] FIG9 is a simulation diagram showing airflow in a flow conversion compartment of an energy storage cabinet according to an exemplary embodiment.

[0023] FIG10 is a schematic diagram of an internal side view of another energy storage cabinet according to an exemplary embodiment.

[0024] FIG11 is a schematic diagram of an internal side view of another energy storage cabinet according to an exemplary embodiment.

[0025] FIG12 is a schematic diagram showing a rear-axle-side structure of a baffle according to an exemplary embodiment.

[0026] FIG13 is an enlarged structural schematic diagram of the baffle shown in FIG12 in area A. FIG13 is a schematic diagram of the baffle shown in FIG12 .

[0027] FIG14 is an enlarged structural diagram of the baffle shown in FIG12 in area B. FIG14 is a schematic diagram of the baffle shown in FIG12 .

[0028] The accompanying drawings are numeraled as follows: 100, energy storage device; 200, electric energy conversion device; 300, user load; 10, energy storage cabinet; 1, energy storage cabinet; 2, energy storage unit; 11, cabinet; 12, partition; 13, baffle; 14, energy storage converter; 15, liquid cooling unit; 16, high-voltage box; 17, circuit breaker; 18, uninterruptible power supply; 19, junction box; 20, axial fan; 111, front side panel; 112, back side panel; 113, top panel; 114, battery Warehouse; 115, variable flow warehouse; 116, liquid cooling warehouse; 1111, air inlet; 1112, left cabinet door; 1113, right cabinet door; 1121, air outlet; 1141, liquid cooling pipeline; 1151, cold air chamber; 1152, hot air chamber; 1153, bracket; 1154, drain hole; 131, avoidance port; 132, wind shield; 133, air guide; 134, first folding edge; 135, second folding edge; 136, notch; 141, air inlet port; 142, air outlet port. DETAILED DESCRIPTION

[0029] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concepts of the example embodiments to those skilled in the art. Like reference numerals in the figures represent like or similar structures, and thus their detailed description will be omitted.

[0030] Since the energy people need is highly temporal and spatial, in order to make rational use of energy and improve energy utilization, it is necessary to use a medium or device to store one form of energy in the same form or convert it into another form of energy, and then release it in a specific form of energy based on future application needs.

[0031] Current green energy sources mainly include solar energy, wind energy, etc. However, solar energy and wind energy generally have problems of strong intermittency and large volatility, which will cause unstable voltage of the green power grid (insufficient electricity during peak hours and too much electricity during low hours). Unstable voltage will cause damage to electricity. Therefore, it may cause the problem of "wind and solar power curtailment" due to insufficient electricity demand or insufficient grid acceptance capacity.

[0032] To address the issue of insufficient electricity demand or insufficient grid capacity, energy storage devices are essential. These devices convert electrical energy into other forms of energy through physical or chemical means, storing it. When needed, the stored energy is converted back into electricity and released. Simply put, an energy storage device acts like a large "power bank," storing electricity when there's sufficient solar or wind energy and releasing it when needed.

[0033] Currently, energy storage (i.e., energy storage) has a wide range of application scenarios, including power generation-side energy storage, grid-side energy storage, renewable energy grid-connected energy storage, and user-side energy storage. The corresponding types of energy storage devices include:

[0034] (1) Large energy storage containers used in grid-side energy storage scenarios can serve as high-quality active and reactive power regulation power sources in the grid, achieving load matching of electricity in time and space, enhancing the ability to absorb renewable energy, and are of great significance in grid system backup, alleviating peak load power supply pressure, and peak and frequency regulation;

[0035] (2) Small and medium-sized energy storage cabinets used in industrial and commercial energy storage scenarios (banks, shopping malls, etc.) on the user side, as well as small household energy storage boxes used in home energy storage scenarios on the user side, mainly operate in the mode of "peak shaving and valley filling". Since there is a large price difference in electricity prices at peak and valley locations according to electricity demand, after users have energy storage equipment, in order to reduce costs, they usually charge the energy storage cabinets / boxes during the low electricity price period; during the peak electricity price period, they release the electricity in the energy storage equipment for use, so as to achieve the purpose of saving electricity bills. In addition, in remote areas, as well as areas with a high incidence of natural disasters such as earthquakes and hurricanes, the existence of household energy storage devices is equivalent to users providing themselves and the power grid with backup power, eliminating the inconvenience caused by frequent power outages due to disasters or other reasons.

[0036] Taking the household energy storage scenario in user-side energy storage as an example, Figure 1 shows a household energy storage system, which includes an energy storage device 100, an electric energy conversion device 200 (such as a photovoltaic panel), and a user load 300 (such as a street lamp, household appliances, etc.). The energy storage device 100 is a small energy storage cabinet 10. Specifically, the electric energy conversion device 200 can convert solar energy into electrical energy during periods of low electricity prices, store it in the energy storage device 100, and then supply the user load 300 for use during peak electricity prices or during power outages.

[0037] In conjunction with the aforementioned physical or electrochemical energy storage, taking electrochemical energy storage as an example, energy storage device 100 includes at least one chemical battery, utilizing the chemical elements within the battery as an energy storage medium, with the charging and discharging process achieved through chemical reactions or changes in the storage medium. Simply put, the electrical energy generated by solar or wind energy is stored in at least one set of chemical batteries through chemical reactions or changes in the storage medium. When external power usage reaches a peak, the energy stored in the at least one set of chemical batteries is released through chemical reactions or changes in the storage medium, or transferred to areas with power shortages for reuse.

[0038] The present embodiment provides an energy storage device 100, which can be an energy storage box or cabinet 10, etc., composed of single cells. The single cells can be lithium-ion batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries, magnesium-ion batteries, etc., and can be cylindrical, flat, or rectangular, etc., which is not limited in the present embodiment.

[0039] Next, the energy storage device 100 is taken as an energy storage cabinet 10 for example for detailed explanation.

[0040] Figure 2 illustrates a schematic diagram of the structure of an energy storage cabinet 10 provided in an embodiment of the present application, and Figure 3 illustrates a schematic diagram of the internal structure of an energy storage cabinet 10 provided in an embodiment of the present application. As shown in Figures 2 and 3, the energy storage cabinet 10 includes: an energy storage cabinet 1 and an energy storage unit 2, which is disposed within the energy storage cabinet 1.

[0041] As shown in Figure 3, the energy storage cabinet 1 includes a cabinet body 11 and an energy storage converter 14. A partition 12 is provided within the cabinet body 11. The partition 12 divides the interior space of the cabinet body 11 into a battery compartment 114 and a converter compartment 115. The energy storage unit 2 is located within the battery compartment 114, and the energy storage converter 14 is located within the converter compartment 115. The energy storage converter 14 is electrically connected to the energy storage unit 2. Thus, after the energy storage converter 14 is electrically connected to the external power grid and the electrical load, the external power grid can charge the energy storage unit 2 through the AC / DC conversion of the energy storage converter 14, and the energy storage unit 2 can supply power to the electrical load through the DC / AC conversion of the energy storage converter 14.

[0042] The energy storage unit 2 can be a single cell, or a battery module, energy storage box, or battery pack composed of single cells. A storage rack is provided within the battery compartment 114, and the energy storage unit 2 is placed on the rack. The rack can be a multi-layer structure, making it easy to place multiple energy storage units 2 within the battery compartment 114 of the energy storage cabinet 1, thereby increasing the energy storage capacity of the energy storage cabinet 10.

[0043] Optionally, a plurality of lugs are provided on the top of the cabinet 11 to facilitate lifting and transporting the energy storage cabinet 1 by connecting a lifting rope to the lugs. Warning devices such as indicator lights are provided on the doors of the cabinet 11 to indicate the operating status (e.g., charging and discharging status) of the energy storage unit 2 placed in the battery compartment 114 of the cabinet 11.

[0044] When the energy storage converter 14 is used to convert AC to DC or DC to AC, heat is inevitably generated. The heat accumulates in the converter compartment 115 of the cabinet 11, which can easily cause the ambient temperature of the energy storage converter 14 to be high, affecting the stability and safety of the operation of the energy storage converter 14. In the related art, in order to cool the converter compartment 115, as shown in Figure 4, an air inlet 1111 and an air outlet 1121 connected to the converter compartment 115 are respectively provided on the front side panel 111 and the back side panel 112 of the cabinet 11 to ensure that cold air outside the cabinet enters the converter compartment 115 along the air inlet 1111 of the front side panel 111, and after heat exchange with the energy storage converter 14, flows out of the converter compartment 115 along the air outlet 1121 of the back side panel 112, so as to ensure that the energy storage converter 14 operates at a lower ambient temperature, thereby ensuring the stability and safety of the operation of the energy storage converter 14.

[0045] However, in the case where only the vent holes are provided on the front side panel 111 and the back side panel 112 of the cabinet body 11, the technicians found after careful study that after the cold air enters the converter chamber 115 along the vent holes on the front side panel 111 for heat exchange, when the hot air flows out of the converter chamber 115 along the vent holes on the back side panel 112, due to the obstruction of the back side panel 112, part of the hot air will flow back along the gap between the energy storage converter 14 and the inner wall of the converter chamber 115, thereby reducing the intake of cold air and reducing the heat dissipation effect on the energy storage converter 14. Figure 5 shows a flow simulation diagram of the hot air after heat exchange with the energy storage converter 14, and the air inlet and outlet volumes are 4705m 3 / h and 4887m 3 / h.

[0046] The present embodiment provides an energy storage cabinet 1 having a baffle 13. The baffle 13 can separate the converter compartment 115 within the cabinet body 11 into a cold air chamber 1151 and a hot air chamber 1152. The baffle 13 prevents the backflow of hot air after heat exchange with the energy storage converter 14, thereby ensuring the heat dissipation of the energy storage converter 14 and, in turn, the stability and safety of the operation of the energy storage converter 14. This ensures the stability and safety of the operation of the energy storage cabinet 10 including the energy storage cabinet 10.

[0047] FIG6 illustrates a schematic diagram of the internal structure of an energy storage cabinet 1 provided in an embodiment of the present application, FIG7 illustrates a schematic diagram of the front-axle structure of an energy storage cabinet 1 provided in an embodiment of the present application, and FIG8 illustrates a schematic diagram of the rear-axle structure of an energy storage cabinet 1 provided in an embodiment of the present application. As shown in FIG6, FIG7 and FIG8, the energy storage cabinet 1 includes: a cabinet body 11, a partition 12 is provided in the cabinet body 11, the internal space of the cabinet body 11 includes a battery compartment 114 and a flow conversion compartment 115 separated by the partition 12, the side panels of the cabinet body 11 (front side panels 111 and back side panels 112) have an air inlet 1111 and an air outlet 1121 connected to the flow conversion compartment 115; a baffle 13 is located in the flow conversion compartment 115, and separates the flow conversion compartment 115 into a cold air chamber 1 151 and the hot air cavity 1152, the cold air cavity 1151 is connected with the air inlet 1111, and the hot air cavity 1152 is connected with the air outlet 1121; the energy storage converter 14 is located in the converter compartment 115 and has a heat dissipation air duct, the heat dissipation air duct includes an air inlet port 141 located at the air inlet end of the energy storage converter 14 and an air outlet port 142 located at the air outlet end, the air inlet port 141 is connected with the cold air cavity 1151, and the air outlet port 142 is connected with the hot air cavity 1152.

[0048] In the embodiment of the present application, a baffle 13 is provided in the converter compartment 115 to separate the converter compartment 115 into a cold air chamber 1151 and a hot air chamber 1152 based on the air outlet port 142 of the energy storage inverter 14, so that the cold air enters the cold air chamber 1151 along the air inlet 1111, and then enters the heat dissipation duct of the energy storage inverter 14 along the air inlet port 141 for heat exchange. The hot air after the heat exchange directly enters the hot air chamber 1152 along the air outlet port 142, and then directly flows out of the converter compartment 115 along the air outlet 1121, thereby avoiding the backflow of hot air, ensuring the heat dissipation effect of the energy storage inverter 14, and further ensuring that the energy storage inverter 14 can operate at a lower ambient temperature, so as to improve the stability and safety of the operation of the energy storage inverter 14. In addition, by simply providing a baffle 13 in the converter compartment 115 , the heat dissipation effect of the energy storage converter 14 can be improved, thereby effectively simplifying the structural adjustment in the converter compartment 115 and facilitating the subsequent maintenance of the energy storage cabinet 1 .

[0049] In the case where a baffle 13 is provided in the rheological chamber, FIG9 shows a flow simulation diagram of hot air after heat exchange with the energy storage converter 14, and the air inlet and outlet volumes are 18418m 3 / h and 18616m 3 / h, compared with the case where no baffle 13 is provided in the converter compartment 115, the air volume is increased by nearly 3.5 times, thereby effectively ensuring the heat dissipation effect of the energy storage converter 14.

[0050] The cabinet body 11 can be a structure with an internal space surrounded by a bottom plate, a top plate 113 and side plates, as shown in FIG7 or FIG8 , the side plates can include a front side plate 111, a back side plate 112, a left side plate (not shown in the figure) and a right side plate (not shown in the figure), and the front side plate 111 is divided into a left cabinet door 1112 and a right cabinet door 1113. For example, the left cabinet door 1112 can constitute the front side plate 111 of the converter compartment 115, and the right cabinet door 1113 can constitute the front side plate 111 of the battery compartment 114. At this time, combined with the above-mentioned hanging ears, indicator lights, air inlet 1111 and air outlet 1121, as shown in FIG7 and FIG8 , the hanging ears can be set on the top of the top plate 113, the indicator lights can be set on the right cabinet door 1113, the air inlet 1111 can be set on the left cabinet door 1112, and the air outlet 1121 can be set on the back side plate 112.

[0051] Among them, a plurality of partitions 12 can be set in the cabinet 11 to divide the internal space of the cabinet 11 into a plurality of compartments. For example, as shown in Figure 6, two partitions 12 are set in the cabinet 11 to separate the battery compartment 114 and the converter compartment 115 in the internal space of the cabinet 11. In addition, in addition to the battery compartment 114 and the converter compartment 115, the internal space of the cabinet 11 also includes a first electrical compartment separated by the partition 12. At this time, as shown in Figure 6, the energy storage cabinet 1 also includes a high-voltage box 16 arranged in the first electrical compartment. The high-voltage box 16 is electrically connected to the energy storage converter 14, and the high-voltage box 16 is used to be electrically connected to the energy storage unit 2 in the battery compartment 114.

[0052] Optionally, the internal space of the cabinet 11 may also include a second electrical compartment separated by a partition 12. In this case, as shown in Figure 6, the energy storage cabinet 1 also includes a circuit breaker 17 arranged in the second electrical compartment. The circuit breaker 17 is connected in series between the external power grid and the energy storage inverter 14 to protect the energy storage inverter 14 through the short-circuit switch to avoid damage to the energy storage inverter 14 when the external power grid fails.

[0053] Optionally, the internal space of the cabinet 11 may also include a third electrical compartment separated by a partition 12. In this case, as shown in Figure 6, the energy storage cabinet 1 also includes an uninterruptible power supply 18 arranged in the third electrical compartment. At the same time, the energy storage cabinet 1 also includes a junction box 19 arranged in the second electrical compartment. The junction box 19 is electrically connected to the uninterruptible power supply 18 and is used to electrically connect to the external power grid.

[0054] Optionally, as shown in Figure 6, the internal space of the cabinet 11 can also include a liquid cooling compartment 116 separated by a partition 12. In this case, the energy storage cabinet 1 also includes a liquid cooling unit 15 and a liquid cooling pipeline 1141. The liquid cooling unit 15 is located in the liquid cooling compartment 116, and the liquid cooling pipeline 1141 is located in the battery compartment 114 and is connected to the liquid cooling unit 15.

[0055] The liquid cooling unit 15 is electrically connected to the junction box 19 described above, so that when the liquid cooling unit 15 is powered, it operates and cools the energy storage units 2 in the battery compartment 114 through the liquid cooling pipe 1141. The liquid cooling pipe 1141 may include multiple branch pipes connected in parallel, each branch pipe corresponding to an energy storage unit 2, to achieve effective heat dissipation for the energy storage units 2 on each shelf layer.

[0056] In the embodiment of the present application, when the energy storage converter 14 is assembled in the rheological chamber, it can be directly supported on the bottom of the rheological chamber 115 and placed in the center; it can also be supported on the bottom of the rheological chamber 115 and abut against a side wall of the rheological chamber 115. Of course, it is also possible to provide a bracket 1153 in the rheological chamber 115, and support the energy storage converter 14 on the bracket 1153 and place it in the center; or, as shown in FIG6 , the energy storage converter 14 can be supported on the bracket 1153 and abut against a side wall of the rheological chamber 115.

[0057] Among them, when the energy storage inverter 14 is directly supported on the bottom of the converter bin 115, the pressure of the energy storage inverter 14 on the bottom of the converter bin 115 can be reduced, thereby facilitating the reduction of the structural strength requirements for the bottom of the converter bin 115; when the energy storage inverter 14 is supported on the bracket 1153, a gap can be formed between the bottom of the energy storage inverter 14 and the bottom of the converter bin 115, thereby facilitating the cold air cavity 1151 to wrap the air inlet end of the energy storage inverter 14, thereby effectively improving the heat dissipation effect of the energy storage inverter 14. When the energy storage inverter 14 is placed in the center of the converter compartment 115, a gap can be formed between the side of the energy storage inverter 14 and the side wall of the converter compartment 115, so that the cold air cavity 1151 can wrap the air inlet end of the energy storage inverter 14 to effectively improve the heat dissipation effect of the energy storage inverter 14; when the energy storage inverter 14 is against the side wall of the converter compartment 115, the stability of the energy storage inverter 14 in the converter compartment 115 can be improved, and the shaking of the energy storage inverter 14 in the converter compartment 115 can be reduced.

[0058] When a baffle 13 is provided within the converter compartment 115, the baffle 13 may be positioned over the air outlet end of the energy storage converter 14. In this case, the majority of the energy storage converter 14 is located within the cold air chamber 1151. Alternatively, the surface of the baffle 13 facing away from the air outlet 1121 may abut against the air outlet end of the energy storage converter 14 to ensure that the entire energy storage converter 14 is located within the cold air chamber 1151. This prevents the hot air from affecting the heat dissipation of the energy storage converter 14 after heat exchange with the energy storage converter 14 and entering the hot air chamber 1152, thereby ensuring the heat dissipation effect of the energy storage converter 14.

[0059] The outer edge of the baffle 13 abuts against the wall of the converter chamber 115 to ensure sealing between the cold air chamber 1151 and the hot air chamber 1152. Alternatively, the outer edge of the baffle 13 may be fixedly connected to the wall of the converter chamber 115 (e.g., by welding), or the baffle 13 may be fixedly connected to the side wall of the energy storage converter 14.

[0060] In the case where the baffle 13 is sleeved on the energy storage inverter 14, as shown in FIG8 , the baffle 13 may have a relief opening 131, and the opening edge of the relief opening 131 abuts the side wall of the air outlet end of the energy storage inverter 14. In the case where the surface of the baffle 13 facing away from the air outlet 1121 abuts the air outlet end of the energy storage inverter 14, the baffle 13 may have a relief opening 131, the surface of the baffle 13 facing away from the air outlet 1121 abuts the air outlet end of the energy storage inverter 14, and the opening edge of the relief opening 131 surrounds the air outlet port 142 of the energy storage inverter 14. Furthermore, in the case where the surface of the baffle 13 facing away from the air outlet 1121 abuts the air outlet end of the energy storage inverter 14, a sealing gasket may be provided between the baffle 13 and the air outlet end of the energy storage inverter 14 to effectively prevent hot air in the hot air chamber 1152 from leaking into the cold air chamber 1151.

[0061] Furthermore, for the avoidance opening 131 mentioned above, combined with the assembly position of the energy storage converter 14 in the converter compartment 115 mentioned above, when the energy storage converter 14 is against the side wall of the converter compartment 115, as shown in Figure 8, the avoidance opening 131 on the baffle 13 can be a rectangular notch on one side edge; and when the energy storage converter 14 is supported on the bracket 1153 and placed in the center, the avoidance opening 131 on the baffle 13 can be a rectangular through hole.

[0062] In the embodiment of the present application, the baffle 13 provided in the flow conversion chamber 115 may be a plate-shaped structure parallel to the back side plate 112 of the cabinet 11 as shown in FIG10 , or a bent structure as shown in FIG7 or FIG8 .

[0063] The baffle 13 with a bent structure, as shown in Figures 11 and 12, includes a wind shield 132 and an air guide 133. The avoidance port 131 is located at the wind shield 132, and the air guide 133 is connected to the wind shield 132. The air guide 133 is away from the edge of the wind shield 132 toward the air outlet 1121, and abuts against the side panel (back panel 112) of the cabinet body 11 having the air outlet 1121.

[0064] Among them, for the avoidance opening 131 on the wind shield 132, the opening edge of the avoidance opening 131 can be in contact with the side wall of the air outlet end of the energy storage inverter 14, or the surface of the baffle 13 facing away from the air outlet 1121 can be in contact with the air outlet end of the energy storage inverter 14, and the opening edge of the avoidance opening 131 surrounds the air outlet port 142 of the energy storage inverter 14.

[0065] In this way, the hot air flowing out along the air outlet port 142 of the energy storage inverter 14 can be guided by the guide part 133 to converge at the air outlet 1121 on the back plate 112 after entering the hot air cavity 1152, and then flow out of the hot air cavity 1152 along the air outlet 1121, thereby reducing the residence time of the hot air in the hot air cavity 1152, thereby facilitating the increase of the air intake volume of the cold air and improving the cooling effect on the energy storage inverter 14.

[0066] Among them, when the edge of the guide part 133 away from the wind shield part 132 abuts against the back panel 112 of the cabinet 11, the edge of the guide part 133 away from the wind shield part 132 is at least flush with the lowest air outlet on the back panel 112, so that the hot air in the hot air cavity 1152 can directly flow out of the hot air cavity 1152 along the air outlet 1121 under the guidance of the guide part 133.

[0067] Furthermore, as shown in FIG10 or FIG11 , the energy storage cabinet 1 further includes an axial flow fan 20, which is fixed within the hot air chamber 1152, with the air inlet side of the axial flow fan 20 facing the air outlet port 142 and the air outlet side facing the air outlet 1121. In this way, the hot air within the hot air chamber 1152 can flow out of the hot air chamber 1152 more quickly under the drive of the axial flow fan 20, thereby increasing the flow rate of the cold air entering the cold air chamber 1151, thereby improving the cooling effect on the energy storage converter 14.

[0068] Optionally, the axial flow fan 20 is fixed to the side panel of the cabinet 11 having the air outlet 1121, that is, the axial flow fan 20 is fixed to the back panel 112 of the cabinet 11, thereby simplifying the installation of the axial flow fan 20 in the variable flow chamber 115. In addition, when the axial flow fan 20 is fixed to the back panel 112 of the cabinet 11, the air outlet side of the axial flow fan 20 directly coincides with the air outlet 1121 of the variable flow chamber 115, so that under the action of the axial flow fan 20, hot air can directly flow out of the variable flow chamber 115 along the air outlet 1121, thereby reducing the airflow resistance of the back panel 112 of the cabinet 11 to the hot air.

[0069] In the embodiment of the present application, considering the operating environment of the energy storage cabinet 1 (typically outdoors), if it rains, rainwater can easily enter the converter compartment 115 through the air outlet 1121 on the back panel 112, thereby increasing safety hazards. In combination with the aforementioned baffle 13, rainwater entering the converter compartment 115 can be blocked in the hot air chamber 1152, preventing the rainwater from affecting the energy storage converter 14, thereby improving the safety performance of the energy storage cabinet 1.

[0070] As for the rainwater gathered in the hot air cavity 1152, combined with the above, as shown in Figure 10, when the baffle 13 is a plate-shaped structure (the plane where it is located is parallel to the back plate 112), the rainwater will gather at the bottom of the hot air cavity 1152. At this time, combined with the above-mentioned situation that the converter 115 is provided with a bracket 1153, and the energy storage converter 14 is supported on the bracket 1153, as long as the height of the rainwater is lower than the height of the bracket 1153, it will not affect the normal operation of the energy storage converter.

[0071] Furthermore, in order to prevent rainwater from being retained in the hot air chamber 1152, a drainage hole 1154 may be provided at the bottom of the hot air chamber 1152 as shown in FIG10 , so that rainwater accumulated in the hot air chamber 1152 can be discharged out through the drainage hole 1154, thereby avoiding the problem of high humidity in the hot air chamber 1152 due to long-term water accumulation.

[0072] A drainage pipe may be provided at the drainage hole 1154 , with one end of the drainage pipe extending out of the cabinet 11 to discharge rainwater collected in the hot air chamber 1152 .

[0073] When the baffle 13 is a bent structure, rainwater entering the converter chamber 115 along the back plate 112 can be gathered in the hot air chamber 1152 under the action of the baffle 13, and then can flow out of the hot air chamber 1152 along the air outlet 1121 on the back plate 112 under the guidance of the guide part 133, thereby avoiding the retention of rainwater in the hot air chamber 1152, further ensuring the safety of the operating environment of the energy storage converter 14, and reducing safety hazards.

[0074] In the embodiment of the present application, when the baffle 13 is reused as a rainwater block, in order to prevent rainwater retained on the baffle 13 from flowing along the opening edge of the avoidance opening 131 to the end face of the air outlet end of the energy storage inverter 14, and then entering the energy storage inverter 14 along the air outlet port 142, as shown in Figures 12 and 13, the opening edge of the avoidance opening 131 may have a first flange 134, and the first flange 134 faces away from the energy storage inverter 14. In this way, when rainwater retained on the baffle 13 flows on the surface of the baffle 13, it can bypass the avoidance opening 131 on the baffle 13 under the obstruction of the first flange 134, thereby preventing rainwater from entering the energy storage inverter 14 along the air outlet port 142, thereby improving the safety of the operation of the energy storage inverter 14.

[0075] The first flange 134 may be provided on the upper opening edge of the avoidance opening 131 or on the entire opening edge of the avoidance opening 131, as long as rainwater on the baffle 13 can be prevented from entering the energy storage converter 14 along the avoidance opening 131.

[0076] Optionally, the first flange 134 at the upper opening edge of the escape opening 131 can have a slope along its length greater than or equal to 2 degrees and less than 5 degrees. This allows rainwater that converges at the corner of the first flange 134 and the upper opening edge to more easily avoid the escape opening 131 on the baffle 13 along the first flange 134, thereby better preventing rainwater from entering the energy storage inverter 14 along the air outlet port 142. For example, the slope of the first flange 134 at the upper opening edge of the escape opening 131 along its length is 2 degrees, 3 degrees, 4 degrees, or 5 degrees. In addition, for the first flange 134 at the upper opening edge of the avoidance opening 131, the first flange 134 can be set to be inclined in the direction away from the avoidance opening 131, that is, the angle formed by the first flange 134 and the baffle 13 is an acute angle, thereby preventing rainwater gathered at the corner of the first flange 134 and the upper opening edge from flowing over the first flange 134 and entering the energy storage inverter 14, so as to better avoid rainwater entering the energy storage inverter 14 along the air outlet port 142.

[0077] For rainwater dripping onto the baffle 13 along the air outlet 1121 on the back panel 112, in addition to setting a first flange 134 at the opening edge of the avoidance opening 131, a second flange 135 facing away from the energy storage inverter 14 can also be set on the outer contour edge of the baffle 13 to prevent the rainwater on the baffle 13 from entering the cold air chamber 1151 along the gap between the baffle 13 and the warehouse wall of the inverter warehouse 115 through the setting of the second flange 135.

[0078] Taking the baffle 13 as an example with a curved structure, as shown in Figures 12 and 14 , the baffle 13 includes a guide portion 133. The edge of the guide portion 133 away from the windshield 132 has a second flange 135. The second flange 135 faces away from the energy storage converter 14, and the second flange 135 has a notch 136 facing the air outlet 1121 on the back plate 112. In this way, rainwater collected at the bottom of the hot air chamber 1152 can flow out of the hot air chamber 1152 along the notch 136 on the second flange 135 and the air outlet 1121 on the back plate 112 under the guiding effect of the second flange 135, thereby preventing rainwater from being retained in the hot air chamber 1152, thereby improving the stability of the energy storage converter 14 in operation within the converter compartment 115.

[0079] The second flanges 135 on either side of the notch 136 have a longitudinal slope of greater than or equal to 2 degrees and less than 5 degrees. This allows rainwater collected at the bottom of the guide portion 133 to more easily flow along the second flanges 135 toward the notch 136. For example, the longitudinal slopes of the second flanges 135 on either side of the notch 136 are 2 degrees, 3 degrees, 4 degrees, or 5 degrees.

[0080] Optionally, both side edges of the guide portion 133 also have a third flange connected to the second flange 135, so that rainwater dripping on the guide portion 133 can be prevented from entering the cold air chamber 1151 due to the obstruction of the third flange, thereby avoiding water accumulation in the cold air chamber 1151; at the same time, due to the obstruction of rainwater by the third flange, the rainwater on the guide portion 133 can be quickly gathered at the bottom of the hot air chamber 1152, thereby increasing the outflow speed of rainwater in the hot air chamber 1152.

[0081] Furthermore, the surface of the baffle 13 facing away from the energy storage inverter 14 has a guide groove extending along the height of the cabinet 11. This guide groove allows rainwater on the baffle 13 to converge smoothly at the bottom of the hot air chamber 1152, preventing it from entering the energy storage inverter 14 along the outlet port 142 of the energy storage inverter 14 or entering the cold air chamber 1151 along the outer edge of the baffle 13, which could affect the safe operation of the energy storage inverter 14.

[0082] [Corrected on 23.10.2024 according to Rule 91] Taking the baffle 13 as an example of a bent structure, for the windshield 132 and the guide portion 133 included in the baffle 13, as shown in Figures 13 and 14, the surface of the windshield 132 facing away from the energy storage inverter 14 and the surface of the guide portion 133 facing away from the energy storage inverter 14 both have guide grooves, and the guide groove of the windshield 132 extends to the guide portion 133, and the guide groove of the guide portion 133 extends to the edge of the guide portion 133 away from the windshield 132. In this way, rainwater dripping on the wind shield 132 and the guide portion 133 can be quickly gathered at the edge of the guide portion 133 away from the wind shield 132 under the drainage action of the guide groove, and then flow out of the hot air chamber 1152 along the notch 136 on the second flange 135 and the air outlet 1121 on the back panel 112, so as to avoid the rainwater being retained in the hot air chamber 1152.

[0083] In the embodiments of the present application, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise expressly defined. Terms such as "installed", "connected", "connected", and "fixed" should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0084] In the description of the embodiments of the present application, it should be understood that the directions or positional relationships indicated by terms such as "up", "down", "left", "right", "front", and "back" are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limiting the embodiments of the present application.

[0085] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the implementation methods of this application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0086] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be modified and varied in various ways. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. An energy storage cabinet (1), wherein, Including: A cabinet body (11), a partition board (12) is arranged inside the cabinet body (11), the internal space of the cabinet body (11) includes a battery compartment (114) and an inverter compartment (115) separated by the partition board (12), and the side plate of the cabinet body (11) has an air inlet (1111) and an air outlet (1121) communicating with the inverter compartment (115); A baffle (13), located inside the inverter compartment (115), and divides the inverter compartment (115) into a cold air cavity (1151) and a hot air cavity (1152), the cold air cavity (1151) communicates with the air inlet (1111), and the hot air cavity (1152) communicates with the air outlet (1121); An energy storage inverter (14), located inside the inverter compartment (115), and has a heat dissipation air duct, the heat dissipation air duct includes an air inlet port (141) at the air inlet end of the energy storage inverter (14) and an air outlet port (142) at the air outlet end, the air inlet port (141) communicates with the cold air cavity (1151), and the air outlet port (142) communicates with the hot air cavity (1152).

2. The energy storage cabinet (1) according to claim 1, wherein, The baffle (13) has an avoidance opening (131), and the opening edge of the avoidance opening (131) abuts against the side wall of the air outlet end of the energy storage inverter (14).

3. The energy storage cabinet (1) according to claim 1 or 2, wherein, The energy storage cabinet (1) further includes an axial flow fan (20), the axial flow fan (20) is fixed inside the hot air cavity (1152), and the air inlet side of the axial flow fan (20) faces the air outlet port (142), and the air outlet side faces the air outlet (1121).

4. The energy storage cabinet (1) according to claim 3, wherein, The axial flow fan (20) is fixed on the side plate of the cabinet body (11) having the air outlet (1121).

5. The energy storage cabinet (1) according to claim 2, wherein, The baffle (13) includes a wind blocking portion (132) and a guiding portion (133); The avoidance opening (131) is located in the wind blocking portion (132), the guiding portion (133) is connected to the wind blocking portion (132), the edge of the guiding portion (133) away from the wind blocking portion (132) faces the air outlet (1121), and abuts against the side plate of the cabinet body (11) having the air outlet (1121).

6. The energy storage cabinet (1) according to claim 5, wherein, The opening edge of the avoidance opening (131) has a first turned edge (134), and the first turned edge (134) faces away from the energy storage inverter (14).

7. The energy storage cabinet (1) according to claim 6, wherein, The slope of the first turned edge (134) along the length direction at the upper opening edge of the avoidance opening (131) is greater than or equal to 2 degrees and less than 5 degrees.

8. The energy storage cabinet (1) according to claim 6, wherein, The edge of the guiding portion (133) away from the wind blocking portion (132) has a second turned edge (135), the second turned edge (135) faces away from the energy storage inverter (14), and the second turned edge (135) has a notch (136) facing the air outlet (1121).

9. The energy storage cabinet (1) according to any one of claims 6-8, wherein, The surface of the wind shield part (132) facing away from the energy storage converter (14) and the surface of the diversion part (133) facing away from the energy storage converter (14) are both provided with diversion grooves, and the diversion grooves of the wind shield part (132) extend to the diversion part (133), and the diversion grooves of the diversion part (133) extend to the edge of the diversion part (133) away from the wind shield part (132).

10. The energy storage cabinet (1) according to claim 2, wherein, The baffle (13) is a plate-like structure, the bottom of the hot air cavity (1152) is provided with a liquid discharge hole (1154), and a bracket (1153) is arranged in the converter chamber (115), and the energy storage converter (14) is supported on the bracket (1153).

11. The energy storage cabinet (1) according to claim 1 or 2, wherein, The internal space of the cabinet body (11) further includes a liquid cooling chamber (116) separated by the partition board (12); The energy storage cabinet (1) further includes a liquid cooling unit (15) and a liquid cooling pipeline (1141), the liquid cooling unit (15) is located in the liquid cooling chamber (116), the liquid cooling pipeline (1141) is located in the battery chamber (114) and is communicated with the liquid cooling unit (15).

12. A energy storage electrical cabinet (10), wherein, Comprising: The energy storage cabinet (1) according to any one of claims 1-11, wherein a storage rack is provided in the battery chamber (114); An energy storage unit (2), which is located on the storage rack and is electrically connected to the energy storage converter (14).

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