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 electrical cabinets

[0001] Priority information

[0002] This application claims priority and benefits to patent application No. 202311866839.9, filed with the China National Intellectual Property Administration on December 29, 2023, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of energy storage technology, and more specifically, to an energy storage cabinet and an energy storage power cabinet. Background Technology

[0004] An energy storage cabinet is a device used to store electrical energy. It typically includes a cabinet and energy storage batteries and converters housed within it. The batteries and converters are usually housed in two separate chambers within the cabinet to prevent heat generation from affecting each other. For the chamber containing the converter, the front and back panels of the cabinet have air inlets and outlets communicating with the chamber, respectively. Cool air is blown in through the inlets to cool the converter, and the cooled hot air exits the chamber through the outlets to ensure the converter's operational stability. However, as the hot air exits the chamber through the outlets, some of it is blocked by the back panel, causing some to flow back into the chamber. This affects the heat dissipation of the converter and poses a safety hazard during operation.

[0005] Summary of the Invention

[0006] A primary objective of this application is to provide an energy storage cabinet and an energy storage power cabinet that can effectively ensure the heat dissipation of the energy storage converter inside the energy storage cabinet and improve operational safety.

[0007] To achieve the above-mentioned objectives, this application adopts the following technical solution:

[0008] According to one aspect of this application, an energy storage cabinet is provided, comprising: a cabinet body, wherein a partition is disposed within the cabinet body, the internal space of the cabinet body includes a battery compartment and a converter compartment separated by the partition, and a side panel of the cabinet body has an air inlet and an air outlet communicating with the converter compartment; a baffle, located within the converter compartment, and dividing the converter compartment into a cold air chamber and a hot air chamber, the cold air chamber communicating with the air inlet and the hot air chamber communicating with the air outlet; and an energy storage converter, located within the converter compartment, and having a heat dissipation duct, the heat dissipation duct including 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 communicating with the cold air chamber and the air outlet port communicating with the hot air chamber.

[0009] In this embodiment, a baffle is installed inside the converter chamber to divide the converter chamber into a cold air chamber and a hot air chamber based on the air outlet port of the energy storage converter. This allows cold air to enter the cold air chamber through the air inlet and then enter the heat dissipation duct of the energy storage converter through the air inlet for heat exchange. The hot air after heat exchange directly enters the hot air chamber through the air outlet and then flows directly out of the converter chamber through the air outlet, thereby avoiding the backflow of hot air, ensuring the heat dissipation effect of the energy storage converter, and thus ensuring that the energy storage converter can operate at a lower ambient temperature, thereby improving the stability and safety of the energy storage converter operation.

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

[0011] In this embodiment of the application, the energy storage cabinet described above can effectively ensure the stability and safety of the energy storage cabinet operation.

[0012] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0013] The above and other features and advantages of this application will become more apparent from a detailed description of exemplary embodiments thereof with reference to the accompanying drawings.

[0014] Figure 1 is a schematic diagram of a residential energy storage system according to an exemplary embodiment.

[0015] Figure 2 is a front view structural diagram of an energy storage cabinet according to an exemplary embodiment.

[0016] Figure 3 is a schematic diagram of the internal structure of an energy storage cabinet according to an exemplary embodiment.

[0017] Figure 4 is a schematic diagram of the internal axonometric structure of an energy storage cabinet, based on relevant technologies.

[0018] Figure 5 is a simulation diagram of the airflow inside the converter compartment of an energy storage cabinet, based on relevant technologies.

[0019] Figure 6 is a schematic diagram of the internal front view structure of an energy storage cabinet according to an exemplary embodiment.

[0020] Figure 7 is a schematic diagram of the internal front axle side structure of an energy storage cabinet according to an exemplary embodiment.

[0021] Figure 8 is a schematic diagram of the internal rear axle structure of an energy storage cabinet according to an exemplary embodiment.

[0022] Figure 9 is a simulation diagram of the airflow inside the converter compartment of an energy storage cabinet according to an exemplary embodiment.

[0023] Figure 10 is a schematic internal side view of another energy storage cabinet according to an exemplary embodiment.

[0024] Figure 11 is a schematic internal side view of another energy storage cabinet according to an exemplary embodiment.

[0025] Figure 12 is a schematic diagram of a rear axle structure of a baffle according to an exemplary embodiment.

[0026] Figure 13 is an enlarged structural schematic diagram of the baffle shown in Figure 12 in region A.

[0027] Figure 14 is an enlarged structural schematic diagram of the baffle shown in Figure 12 in region B.

[0028] The reference numerals in the attached drawings are explained as follows: 100, Energy storage device; 200, Power 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 flow fan; 111, Front panel; 112, Rear panel; 113, Top panel; 114, Battery. 115. Variable flow chamber; 116. Liquid cooling chamber; 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. Support; 1154. Drain hole; 131. Clearance opening; 132. Windproof section; 133. Air guide section; 134. First flange; 135. Second flange; 136. Notch; 141. Air inlet port; 142. Air outlet port. Detailed Implementation

[0029] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that this application will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore their detailed description will be omitted.

[0030] Since the energy people need is highly time- and space-dependent, in order to make rational use of energy and improve energy efficiency, it is necessary to use a medium or device to store one form of energy in the same way or by converting it into another form of energy, and then release it in a specific form of energy based on future application needs.

[0031] Currently, green energy mainly includes solar and wind power. However, solar and wind power are generally characterized by strong intermittency and large fluctuations, which can cause voltage instability in the green power grid (insufficient electricity during peak demand and excessive electricity during off-peak demand). Unstable voltage can damage the power grid, and therefore may lead to the problem of "curtailment of wind and solar power" due to insufficient electricity demand or insufficient grid capacity.

[0032] To solve the problem of insufficient electricity demand or inadequate grid capacity, we must rely on energy storage devices. These devices convert electrical energy into other forms of energy through physical or chemical means and store it. When needed, the stored energy is converted back into electrical energy and released. Simply put, an energy storage device is like a large "power bank," storing electrical energy when solar and wind power are abundant and releasing it when required.

[0033] Current energy storage applications are quite widespread, including 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 and other applications in grid-side energy storage scenarios can serve as high-quality active and reactive power regulation power sources in the grid, enabling load matching of electrical energy in time and space, enhancing the capacity for renewable energy absorption, and playing a significant role in grid system backup, alleviating peak load power supply pressure, and peak regulation and frequency regulation.

[0035] (2) Small and medium-sized energy storage cabinets used in industrial and commercial energy storage scenarios (banks, shopping malls, etc.) and small household energy storage boxes used in home energy storage scenarios primarily operate under the "peak shaving and valley filling" mode. Because there are significant price differences in electricity consumption during peak and valley periods, users with energy storage devices typically charge the cabinets / boxes during off-peak hours to reduce costs; during peak hours, they release the stored electricity for use, thus saving on electricity bills. Furthermore, in remote areas and regions prone to natural disasters such as earthquakes and hurricanes, the existence of home energy storage devices effectively provides backup power for users and the power grid, eliminating the inconvenience caused by frequent power outages due to disasters or other reasons.

[0036] Taking a residential energy storage scenario in user-side energy storage as an example, Figure 1 illustrates a residential energy storage system. This system includes an energy storage device 100, a power conversion device 200 (such as a photovoltaic panel), and user loads 300 (such as streetlights, household appliances, etc.). The energy storage device 100 is a small energy storage cabinet 10. Specifically, the power conversion device 200 can convert solar energy into electrical energy during periods of low electricity prices and store it through the energy storage device 100. This stored energy can then be supplied to the user loads 300 during periods of high electricity prices, or during power outages / power outages.

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

[0038] This application provides an energy storage device 100, which can be an energy storage box, energy storage cabinet 10, etc., composed of individual batteries. The individual batteries can be lithium-ion batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries, magnesium-ion batteries, etc., and can be cylindrical, flat, cuboid, etc., and this application does not limit the specific form.

[0039] The following explanation will take the energy storage device 100 as an example of the energy storage cabinet 10.

[0040] Figure 2 illustrates a structural schematic diagram of an energy storage cabinet 10 provided in an embodiment of this application, and Figure 3 illustrates a schematic diagram of the internal structure of an energy storage cabinet 10 provided in an embodiment of this 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, wherein the energy storage unit 2 is disposed inside 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 installed inside the cabinet body 11, dividing the internal space into a battery compartment 114 and a converter compartment 115. The energy storage unit 2 is located in the battery compartment 114, and the energy storage converter 14 is located in 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 battery cell, or a battery module, energy storage box, or battery pack composed of single batteries. A shelf is provided inside the battery compartment 114, and the energy storage unit 2 is placed on the shelf. The shelf can have a multi-layer structure, thus facilitating the placement of multiple energy storage units 2 within the battery compartment 114 of the energy storage cabinet 1, thereby improving the energy storage capacity of the energy storage cabinet 10.

[0043] Optionally, the top of the cabinet 11 is provided with multiple hanging ears to facilitate the hoisting and transportation of the energy storage cabinet 1 by connecting the hanging ropes to the hanging ears. The cabinet door of the cabinet 11 is provided with indicator lights and other warning devices to indicate the working status (such as charging status 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 performs AC / DC conversion or DC / AC conversion, heat is inevitably generated. This heat accumulates in the converter compartment 115 of the cabinet 11, which can easily lead to a high operating ambient temperature for the energy storage converter 14, affecting its stability and safety. In related technologies, to cool the converter compartment 115, as shown in Figure 4, air inlets 1111 and outlets 1121, respectively connected to the converter compartment 115, are provided on the front panel 111 and back panel 112 of the cabinet 11. This ensures that cool air from outside enters the converter compartment 115 through the air inlet 1111 on the front panel 111, exchanges heat with the energy storage converter 14, and then exits the converter compartment 115 through the outlet 1121 on the back panel 112. This ensures that the energy storage converter 14 operates at a lower ambient temperature, thereby guaranteeing its stability and safety.

[0045] However, for the case where ventilation holes are only provided on the front panel 111 and the back panel 112 of the cabinet 11, after careful study, the technicians found that after the cold air enters the converter chamber 115 through the ventilation holes on the front panel 111 for heat exchange, when the hot air flows out of the converter chamber 115 through the ventilation holes on the back panel 112, the back panel 112 obstructs the flow, causing some of the hot air to flow back along the gap between the energy storage converter 14 and the inner wall of the converter chamber 115. This reduces the intake of cold air and decreases the heat dissipation effect on the energy storage converter 14. Figure 5 shows a simulation diagram of the flow of hot air after heat exchange with the energy storage converter 14, with an intake and exhaust volume of 4705 m³ / s. 3 / h and 4887m 3 / h.

[0046] This application provides an energy storage cabinet 1 with a baffle 13, which divides the converter chamber 115 inside the cabinet 11 into a cold air chamber 1151 and a hot air chamber 1152 based on the baffle 13. This prevents the backflow of hot air after heat exchange with the energy storage converter 14 due to the blocking effect of the baffle 13, thus ensuring the heat dissipation effect of the energy storage converter 14 and consequently ensuring the stability and safety of its operation. Therefore, the stability and safety of the energy storage cabinet 10, including this energy storage cabinet 1, are guaranteed.

[0047] Figure 6 illustrates a schematic diagram of the internal structure of an energy storage cabinet 1 provided in an embodiment of this application; Figure 7 illustrates a schematic diagram of the front axle side structure of an energy storage cabinet 1 provided in an embodiment of this application; and Figure 8 illustrates a schematic diagram of the rear axle side structure of an energy storage cabinet 1 provided in an embodiment of this application. As shown in Figures 6, 7, and 8, the energy storage cabinet 1 includes: a cabinet body 11, with a partition 12 disposed inside the cabinet body 11. The internal space of the cabinet body 11 includes a battery compartment 114 and a converter compartment 115 separated by the partition 12. The side panels (front side panel 111 and back side panel 112) of the cabinet body 11 have an air inlet 1111 and an air outlet 1121 communicating with the converter compartment 115; and a baffle 13 located inside the converter compartment 115, dividing the converter compartment 115 into a cold air chamber 1. 151 and hot air chamber 1152, cold air chamber 1151 is connected to air inlet 1111, hot air chamber 1152 is connected to air outlet 1121; energy storage converter 14, located in converter chamber 115, has heat dissipation air duct, heat dissipation air duct includes air inlet port 141 at the air inlet end of energy storage converter 14 and air outlet port 142 at the air outlet end, air inlet port 141 is connected to cold air chamber 1151, and air outlet port 142 is connected to hot air chamber 1152.

[0048] In this embodiment, a baffle 13 is provided inside the converter chamber 115 to divide the converter chamber 115 into a cold air chamber 1151 and a hot air chamber 1152 based on the air outlet port 142 of the energy storage converter 14. This allows cold air to enter the cold air chamber 1151 through the air inlet 1111, and then enter the heat dissipation air duct of the energy storage converter 14 through the air inlet 141 for heat exchange. The hot air after heat exchange directly enters the hot air chamber 1152 through the air outlet 142, and then flows directly out of the converter chamber 115 through the air outlet 1121. This avoids the backflow of hot air, ensures the heat dissipation effect of the energy storage converter 14, and thus ensures that the energy storage converter 14 can operate at a lower ambient temperature, thereby improving the stability and safety of the operation of the energy storage converter 14. In addition, by simply installing a baffle 13 inside the converter compartment 115, the heat dissipation effect of the energy storage converter 14 can be improved, thereby effectively simplifying the structural adjustment inside the converter compartment 115 and facilitating the maintenance of the energy storage cabinet 1 in the future.

[0049] Figure 9 shows a simulation diagram of the flow of hot air after heat exchange with the energy storage converter 14, with baffle 13 installed inside the rheology chamber. The inlet and outlet air volumes are 18418 m³ / s and 18418 m³ / s, respectively. 3 / h and 18616m 3 / h, compared to the case where the baffle 13 is not set in the converter chamber 115, the air volume is increased by nearly 3.5 times, which can effectively ensure the heat dissipation effect of the energy storage converter 14.

[0050] The cabinet 11 can be a structure with internal space enclosed by a bottom plate, a top plate 113, and side plates, as shown in Figure 7 or Figure 8. 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). 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 form the front side plate 111 of the inverter compartment 115, and the right cabinet door 1113 can form the front side plate 111 of the battery compartment 114. In this case, combined with the above-mentioned hanging ears, indicator lights, air inlets 1111 and air outlets 1121, as shown in Figures 7 and 8, 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] The cabinet 11 can be equipped with multiple partitions 12 to divide its internal space into multiple compartments. For example, as shown in Figure 6, the cabinet 11 has two partitions 12 to separate the battery compartment 114 and the converter compartment 115 within its internal space. 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 partitions 12. In this case, as shown in Figure 6, the energy storage cabinet 1 also includes a high-voltage box 16 disposed in the first electrical compartment. The high-voltage box 16 is electrically connected to the energy storage converter 14 and is also used to electrically connect 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. As shown in Figure 6, the energy storage cabinet 1 also includes a circuit breaker 17 installed in the second electrical compartment. The circuit breaker 17 is connected in series between the external power grid and the energy storage converter 14 to protect the energy storage converter 14 through a short circuit switch, so as to avoid damage to the energy storage converter 14 in the event of an external power grid failure.

[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 installed in the third electrical compartment. At the same time, the energy storage cabinet 1 also includes a junction box 19 installed in the second electrical compartment. The junction box 19 is electrically connected to the uninterruptible power supply 18 and is used for electrical connection to an external power grid.

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

[0055] The liquid cooling unit 15 is electrically connected to the junction box 19 mentioned above, so that it can operate when powered on, and cool the energy storage unit 2 in the battery compartment 114 through the liquid cooling pipeline 1141. The liquid cooling pipeline 1141 may include multiple branch pipelines connected in parallel, each branch pipeline corresponding to one energy storage unit 2, so as to achieve effective heat dissipation of the energy storage unit 2 on each shelf.

[0056] In this embodiment of the application, when the energy storage converter 14 is assembled in the converter chamber, it can be directly supported on the bottom of the converter chamber 115 and placed in the center; or it can be supported on the bottom of the converter chamber 115 and abut against one side wall of the converter chamber 115. Of course, a bracket 1153 can also be set inside the converter chamber 115, and the energy storage converter 14 can be supported on the bracket 1153 and placed in the center; or as shown in Figure 6, the energy storage converter 14 can be supported on the bracket 1153 and abut against one side wall of the converter chamber 115.

[0057] When the energy storage converter 14 is directly supported on the bottom of the converter chamber 115, the pressure exerted by the energy storage converter 14 on the bottom of the converter chamber 115 can be reduced, thereby facilitating a reduction in the structural strength requirements for the bottom of the converter chamber 115. When the energy storage converter 14 is supported on the bracket 1153, a gap can be formed between the bottom of the energy storage converter 14 and the bottom of the converter chamber 115, thereby facilitating the cooling air cavity 1151 to enclose the air inlet of the energy storage converter 14, effectively improving the heat dissipation effect of the energy storage converter 14. When the energy storage converter 14 is placed in the center of the converter chamber 115, a gap can be formed between the side of the energy storage converter 14 and the side wall of the converter chamber 115, so that the air inlet of the energy storage converter 14 can be wrapped by the cold air cavity 1151, thereby effectively improving the heat dissipation effect of the energy storage converter 14. When the energy storage converter 14 abuts against one side wall of the converter chamber 115, the stability of the energy storage converter 14 in the converter chamber 115 can be improved, and the shaking of the energy storage converter 14 in the converter chamber 115 can be reduced.

[0058] When a baffle 13 is installed inside the converter chamber 115, the baffle 13 can be fitted onto the air outlet end of the energy storage converter 14, in which case most of the energy storage converter 14 is located inside the cold air chamber 1151; alternatively, the surface of the baffle 13 facing away from the air outlet 1121 can abut against the air outlet end of the energy storage converter 14 to ensure that the entire energy storage converter 14 is located inside the cold air chamber 1151. In this way, after the hot air undergoes heat exchange with the energy storage converter 14 and enters the hot air chamber 1152, the hot air is prevented from affecting the heat dissipation of the energy storage converter 14, thereby ensuring the heat dissipation effect of the energy storage converter 14.

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

[0060] In the case where the baffle 13 is fitted onto the energy storage converter 14, as shown in Figure 8, the baffle 13 has a clearance opening 131, and the opening edge of the clearance opening 131 abuts against the side wall of the air outlet end of the energy storage converter 14. In the case where the surface of the baffle 13 facing away from the air outlet 1121 abuts against the air outlet end of the energy storage converter 14, the baffle 13 has a clearance opening 131, the surface of the baffle 13 facing away from the air outlet 1121 abuts against the air outlet end of the energy storage converter 14, and the opening edge of the clearance opening 131 surrounds the air outlet port 142 of the energy storage converter 14. Furthermore, in the case where the surface of the baffle 13 facing away from the air outlet 1121 abuts against the air outlet end of the energy storage converter 14, a sealing gasket can be provided at both the baffle 13 and the air outlet end of the energy storage converter 14 to effectively prevent hot air in the hot air chamber 1152 from leaking into the cold air chamber 1151.

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

[0062] In this embodiment of the application, the baffle 13 installed inside the converter compartment 115 can be a plate-shaped structure parallel to the back panel 112 of the cabinet 11 as shown in Figure 10, or a bent structure as shown in Figure 7 or Figure 8.

[0063] As shown in Figures 11 and 12, the baffle 13 with a bent structure includes a windproof part 132 and a flow guide part 133. The clearance opening 131 is located in the windproof part 132, and the flow guide part 133 is connected to the windproof part 132. The edge of the flow guide part 133 away from the windproof part 132 faces the air outlet 1121 and abuts against the side panel (back side panel 112) of the cabinet 11 that has the air outlet 1121.

[0064] Specifically, the clearance opening 131 on the windbreak 132 can be such that the opening edge of the clearance opening 131 abuts against the side wall of the air outlet end of the energy storage converter 14, or the surface of the baffle 13 facing away from the air outlet 1121 abuts against the air outlet end of the energy storage converter 14, and the opening edge of the clearance opening 131 surrounds the air outlet port 142 of the energy storage converter 14.

[0065] Thus, the hot air flowing out from the air outlet 142 of the energy storage converter 14 can be guided by the guide section 133 and 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, reducing the residence time of the hot air in the hot air cavity 1152, thereby facilitating the increase of the intake volume of cold air and improving the cooling effect on the energy storage converter 14.

[0066] When the edge of the air guide 133 away from the wind deflector 132 abuts against the back panel 112 of the cabinet 11, the edge of the air guide 133 away from the wind deflector 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 flow directly out of the hot air cavity 1152 along the air outlet 1121 under the guidance of the air guide 133.

[0067] Furthermore, as shown in Figure 10 or Figure 11, the energy storage cabinet 1 also includes an axial flow fan 20, which is fixed inside the hot air chamber 1152. The air inlet side of the axial flow fan 20 faces the air outlet 142, and the air outlet side faces the air outlet 1121. In this way, the hot air inside 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 cold air entering the cold air chamber 1151 and improving the cooling effect on the energy storage converter 14.

[0068] Optionally, the axial fan 20 is fixed to the side panel of the cabinet 11 with the air outlet 1121, that is, the axial fan 20 is fixed to the back panel 112 of the cabinet 11, thereby simplifying the installation of the axial fan 20 in the variable flow chamber 115. In addition, when the axial fan 20 is fixed to the back panel 112 of the cabinet 11, the air outlet side of the axial fan 20 directly coincides with the air outlet 1121 of the variable flow chamber 115, so that under the action of the axial 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 this embodiment, considering the operating environment of the energy storage cabinet 1 (usually outdoors), if it rains, rainwater can easily enter the converter compartment 115 through the air outlet 1121 on the back panel 112, thereby increasing the safety hazard. However, combined with the aforementioned baffle 13, rainwater entering the converter compartment 115 can be blocked in the hot air cavity 1152, preventing rainwater from affecting the energy storage converter 14, thus improving the safety performance of the energy storage cabinet 1.

[0070] Regarding the rainwater that collects in the hot air cavity 1152, as described above and shown in Figure 10, when the baffle 13 is a plate-shaped structure (its plane is parallel to the back panel 112), the rainwater will collect at the bottom of the hot air cavity 1152. In this case, combined with the fact that the converter chamber 115 is equipped with a support 1153 and the energy storage converter 14 is supported on the support 1153, as long as the height of the rainwater is lower than the height of the support 1153, it will not affect the normal operation of the energy storage converter.

[0071] Furthermore, to prevent rainwater from accumulating in the hot air cavity 1152, as shown in Figure 10, a drain hole 1154 can be provided at the bottom of the hot air cavity 1152 to drain the rainwater accumulated in the hot air cavity 1152, thereby avoiding the problem of high humidity caused by long-term water accumulation in the hot air cavity 1152.

[0072] A drainage pipe can be installed at the drain hole 1154, with one end of the drainage pipe extending out of the cabinet 11 to drain the rainwater accumulated in the hot air chamber 1152.

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

[0074] In this embodiment, when the baffle 13 is reused as a rainwater barrier, 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 of the energy storage converter 14, and then entering the energy storage converter 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 may face away from the energy storage converter 14. In this way, when the 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, preventing rainwater from entering the energy storage converter 14 along the air outlet port 142, thereby improving the operational safety of the energy storage converter 14.

[0075] The first flange 134 can be provided on the upper opening edge of the avoidance opening 131, or the first flange 134 can be provided 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, for the first flange 134 at the upper opening edge of the avoidance opening 131, the slope of the first flange 134 along the length direction can be set to be greater than or equal to 2 degrees and less than 5 degrees. This makes it easier for rainwater collected at the corner of the first flange 134 and the upper opening edge to bypass the avoidance opening 131 on the baffle 13, thus better preventing rainwater from entering the energy storage converter 14 along the air outlet port 142. For example, the slope of the first flange 134 at the upper opening edge of the avoidance opening 131 along the length direction is 2 degrees, 3 degrees, 4 degrees, or 5 degrees. In addition, the first flange 134 at the upper opening edge of the avoidance port 131 can be set to tilt away from the avoidance port 131, that is, the angle formed by the first flange 134 and the baffle 13 is an acute angle, so as to prevent rainwater that gathers at the corner of the first flange 134 and the upper opening edge from turning over the first flange 134 and entering the energy storage converter 14, so as to better prevent rainwater from entering the energy storage converter 14 along the air outlet port 142.

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

[0078] Taking the baffle 13 as a bent structure as an example, as shown in Figures 12 and 14, the guide portion 133 of the baffle 13 has a second flange 135 at its edge away from the windbreak portion 132. 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 side plate 112. In this way, rainwater collected at the bottom of the hot air cavity 1152 can flow out of the hot air cavity 1152 along the notch 136 on the second flange 135 and the air outlet 1121 on the back side plate 112 under the guiding effect of the second flange 135, so as to avoid the situation of rainwater stagnation in the hot air cavity 1152, thereby improving the stability of the energy storage converter 14 operating in the converter chamber 115.

[0079] Specifically, the slope of the second flanges 135 on both sides of the gap 136 in the longitudinal direction is greater than or equal to 2 degrees and less than 5 degrees. This allows rainwater that collects at the bottom of the guide section 133 to flow more easily along the second flanges 135 to the location of the gap 136. For example, the slope of the second flanges 135 on both sides of the gap 136 in the longitudinal direction is 2 degrees, 3 degrees, 4 degrees, and 5 degrees.

[0080] Optionally, both sides of the guide section 133 also have a third flange connected to the second flange 135. In this way, rainwater dripping on the guide section 133 can be prevented from entering the cold air cavity 1151 by the third flange, thus preventing water accumulation in the cold air cavity 1151. At the same time, due to the obstruction of rainwater by the third flange, the rainwater on the guide section 133 can quickly gather at the bottom of the hot air cavity 1152, increasing the outflow speed of rainwater in the hot air cavity 1152.

[0081] Furthermore, the surface of the baffle 13 facing away from the energy storage converter 14 has a guide groove extending along the height direction of the cabinet 11. In this way, under the guiding effect of the guide groove, rainwater on the baffle 13 can smoothly collect at the bottom of the hot air chamber 1152, preventing it from entering the energy storage converter 14 along the air outlet 142 of the energy storage converter 14, and from entering the cold air chamber 1151 along the outer contour edge of the baffle 13, thus affecting the safe operation of the energy storage converter 14.

[0082] [Correction 23.10.2024 according to Rule 91] Taking the baffle 13 as a bent structure as an example, as shown in Figures 13 and 14, the wind-blocking part 132 and the flow-guiding part 133 included in the baffle 13 have flow-guiding grooves on the surface of the wind-blocking part 132 away from the surface of the energy storage converter 14 and the flow-guiding part 133 away from the surface of the energy storage converter 14. The flow-guiding grooves of the wind-blocking part 132 extend to the flow-guiding part 133, and the flow-guiding grooves of the flow-guiding part 133 extend to the edge of the flow-guiding part 133 away from the wind-blocking part 132. In this way, rainwater dripping onto the windbreak 132 and the guide section 133 can quickly gather at the edge of the guide section 133 away from the windbreak 132 under the guidance of the guide channel, and then flow out of the hot air cavity 1152 along the notch 136 on the second flange 135 and the air outlet 1121 on the back side plate 112, so as to avoid the situation where rainwater stagnates in the hot air cavity 1152.

[0083] In the embodiments of this application, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "link," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "link" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0084] In the description of the embodiments of this application, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0085] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the implementation of this application. In this specification, the illustrative expressions 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 one or more embodiments or examples.

[0086] The above are merely preferred embodiments of the implementation methods of this application and are not intended to limit the implementation methods of this application. For those skilled in the art, various modifications and variations can be made to the implementation methods of this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the implementation methods of this application should be included within the protection scope of the implementation methods of this application.

Claims

1. An energy storage cabinet (1), wherein, include: Cabinet (11), wherein a partition (12) is provided inside the cabinet (11), the internal space of the cabinet (11) includes a battery compartment (114) and a converter compartment (115) separated by the partition (12), and the side panel of the cabinet (11) has an air inlet (1111) and an air outlet (1121) communicating with the converter compartment (115); A baffle (13) is located inside the converter chamber (115) and divides the converter chamber (115) into a cold air chamber (1151) and a hot air chamber (1152). The cold air chamber (1151) is connected to the air inlet (1111), and the hot air chamber (1152) is connected to the air outlet (1121). An energy storage converter (14) is located inside the converter chamber (115) and has a heat dissipation duct. The heat dissipation duct includes an air inlet port (141) at the air inlet end of the energy storage converter (14) and an air outlet port (142) at the air outlet end. The air inlet port (141) is connected to the cold air chamber (1151), and the air outlet port (142) is connected to the hot air chamber (1152).

2. The energy storage cabinet (1) of claim 1, wherein, The baffle (13) has a clearance opening (131), the opening edge of which abuts against the side wall of the air outlet of the energy storage converter (14).

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

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

5. The energy storage cabinet (1) of claim 2, wherein, The baffle (13) includes a windproof part (132) and a flow guide part (133); The clearance opening (131) is located on the windbreak (132), the flow guide (133) is connected to the windbreak (132), the edge of the flow guide (133) away from the windbreak (132) faces the air outlet (1121), and abuts against the side panel of the cabinet (11) with the air outlet (1121).

6. The energy storage cabinet (1) of claim 5, wherein, The opening edge of the clearance opening (131) has a first flange (134) facing away from the energy storage converter (14).

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

8. The energy storage cabinet (1) of claim 6, wherein, The guide section (133) has a second flange (135) at the edge away from the windbreak section (132), the second flange (135) facing away from the energy storage converter (14), and the second flange (135) has a notch (136) facing the air outlet (1121).

9. An energy storage cabinet (1) according to any of claims 6-8, wherein The surface of the windbreak (132) facing away from the energy storage converter (14) and the surface of the flow guide (133) facing away from the energy storage converter (14) both have flow guide grooves, and the flow guide groove of the windbreak (132) extends to the flow guide (133), and the flow guide groove of the flow guide (133) extends to the edge of the flow guide (133) away from the windbreak (132).

10. The energy storage cabinet (1) of claim 2, wherein, The baffle (13) has a plate-like structure, the bottom of the hot air chamber (1152) has a drain hole (1154), and a bracket (1153) is provided inside the converter chamber (115), and the energy storage converter (14) is supported on the bracket (1153).

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

12. An energy storage cabinet (10), wherein, include: The energy storage cabinet (1) according to any one of claims 1-11, wherein the battery compartment (114) has a shelf; The energy storage unit (2) is located on the shelf and is electrically connected to the energy storage converter (14).

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