Energy storage cabinet

Abstract

The utility model discloses an energy storage cabinet which comprises a shell, the shell comprises an upper-layer cabinet body, a middle-layer cabinet body and a lower-layer cabinet body, and the upper-layer cabinet body, the middle-layer cabinet body and the lower-layer cabinet body are arranged up and down; a front door and a rear door are respectively arranged on opposite sides of the shell; a distribution box and a PCS module are fixedly installed in the middle-layer cabinet body, a high-voltage box is arranged in the upper-layer cabinet body, and the horizontal side of the middle-layer cabinet body is provided with an air inlet shutter and an air outlet shutter which are used for ventilation and heat dissipation. The distribution pattern that the upper portion and the lower portion are arranged in the middle is adopted, the PCS is locally lifted to avoid water immersion, the PCS is isolated from a heat dissipation air channel of the battery bin, and the situation that heat is diffused to the battery pack to affect the battery pack due to the large heat production coefficient of the PCS is avoided. The central arrangement is isolated from the ground to the maximum extent, dust accumulation is prevented from shortening the service life of equipment, debugging and maintenance by workers are facilitated, high-voltage short circuit caused by water immersion is avoided, dust accumulation in an air duct of the control module is reduced, the service cycle of the equipment is prolonged, and the cable cost is saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of energy storage cabinets, in particular to an energy storage cabinet. Background Art

[0002] At present, with the development of new energy and smart grid, energy storage technology will usher in new development opportunities. However, some components of energy storage equipment will age or even be damaged when they are in long-term operation. In particular, modules such as distribution box 21 and PCS are prone to failure and require more maintenance than other components.

[0003] There are currently three layout methods for whole cabinet energy storage systems on the market, and their main defects are:

[0004] The first method is to divide the energy storage cabinet into two left and right compartments, wherein the left compartment stores control modules such as PCS and distribution box 21, and the right compartment stores battery clusters. This method is to design independent storage compartments for control modules in the left and right or front and back directions, which will cause the energy storage cabinet to occupy a large area and is not suitable for environments with small space requirements.

[0005] The second type of energy storage cabinet places the control module and PCS at the bottom of the energy storage cabinet, directly below the battery cluster. Although this method can save space, the first disadvantage is that maintenance requires squatting or bending over, which is inconvenient. The second disadvantage is that in areas with heavy rainfall, the control module and PCS placed at the base of the energy storage cabinet will be the first to be soaked in water, causing system loss of control, high-voltage short circuit and other safety hazards. The third disadvantage is that since most energy storage systems use air cooling for temperature control, it is usually a front-in and rear-out method or a rear-in and front-out method. When the control module and PCS are placed at the bottom of the energy storage cabinet, because the air duct is close to the ground and there is a lot of dust on the ground, it is very easy to cause the air inlet shutters to be blocked due to dust accumulation, affecting the service life of the equipment.

[0006] The third method is to place the control module and PCS at the top of the energy storage cabinet, directly above the battery cluster. This method can also save floor space, but the control module and PCS are placed on the top layer, which is difficult to disassemble and repair, and the wiring is inconvenient and the cable cost is high.

[0007] The layouts of the above three energy storage cabinets all have defects. The left-right cabinets occupy a large area. The storage positions of the battery clusters and PCS in the layered cabinets make maintenance and connection wires inconvenient. In addition, the designs of the above three cabinets cannot avoid rainwater in the harsh environment from contaminating the internal components, which can easily cause safety hazards such as short circuits and system out of control. Therefore, in view of the unreasonable layout of the energy storage cabinet, it is urgent to design an energy storage cabinet to eliminate the above risks. Utility Model Content

[0008] The purpose of the utility model is to provide an energy storage cabinet to solve the problems raised in the above background technology. The following technical solutions are provided: an energy storage cabinet,

[0009] The outer shell comprises an upper cabinet, a middle cabinet and a lower cabinet, and the upper cabinet, the middle cabinet and the lower cabinet are arranged in an up-and-down manner; a front door and a rear door are respectively arranged on opposite sides of the outer shell; a distribution box and a PCS module are fixedly installed inside the middle cabinet, and a high-voltage box is arranged inside the upper cabinet.

[0010] The horizontal sides of the middle cabinet are respectively provided with air inlet shutters and air outlet shutters for ventilation and heat dissipation.

[0011] In this technical solution, the energy storage cabinet is divided into three layers: upper, middle and lower. The upper and lower layers are used to place battery packs respectively, and the middle layer is used to place PCS, distribution box, etc. PCS modules, high-voltage boxes, distribution boxes and other modules are easily damaged modules in the energy storage cabinet, so they need to be frequently disassembled and assembled. The central arrangement in the upper and lower directions is conducive to convenient disassembly and maintenance.

[0012] The PCS is partially elevated to prevent water immersion by adopting a distribution pattern with the top and bottom centered. At the same time, the PCS is isolated from the heat dissipation duct of the battery compartment to avoid the impact of the PCS's large heat generation coefficient and heat dissipation to the battery pack. The central layout can ensure that the PCS is isolated from the ground to the maximum extent, preventing dust accumulation and shortening the life of the equipment.

[0013] In any of the above technical solutions, further, the height of the middle cabinet is set between 1.1 meters and 1.3 meters.

[0014] In this technical solution, water is highly corrosive to electrical equipment, and water ingress can easily cause electrical components to burn, leading to equipment failure or short circuit. Therefore, once water enters the energy storage cabinet, the equipment will not operate normally. After water ingress, the energy storage cabinet may have safety hazards such as leakage or electric shock, and the life safety of personnel will be threatened.

[0015] Therefore, when the PCS module, high-voltage box, and distribution box are arranged in the center, they are located about 1.2m from the ground, so that these three are not easily soaked in water when working in a water-prone environment. Because the input and output voltages of the PCS module are high voltage, water soaking will cause a short circuit. Compared with the battery pack short circuit, the harm caused by the PCS short circuit is greater because the input and output voltages of the PCS are much higher than the input and output voltages of the battery pack. Therefore, the PCS should be raised as much as possible to avoid water soaking.

[0016] In the energy storage cabinet, the PCS module, high-voltage box, and distribution box need to be started up and debugged. At the same time, these three modules need to connect more communication harnesses. Placing the three in the middle of the energy storage cabinet is conducive to the operator's convenience in debugging and wiring maintenance.

[0017] In any of the above technical solutions, further, a drawer-type storage rack is provided inside the lower cabinet, and a bottom battery pack is fixedly arranged in the drawer-type storage rack. The upper battery pack is arranged inside the upper cabinet. The distribution box, the PCS module and the high-voltage box are electrically connected. The middle cabinet is separated from the upper cabinet and the lower cabinet.

[0018] In the present technical solution, the PCS is a module that generates more heat than the battery. Sharing the same air duct with the battery pack will cause the operating temperature of the PCS to be transferred to the battery compartment, affecting the heat dissipation of the battery. Therefore, the air ducts of the battery pack and the PCS need to be separated independently. Therefore, the upper and lower ends of the middle cabinet are arranged to isolate the heat-concentrated part from the battery pack, thereby avoiding the battery pack from being short-circuited due to heat, thereby causing hidden dangers such as fire in the energy storage cabinet.

[0019] When the control module and PCS are arranged in the center, the air duct is away from the ground when the air inlet shutters and the air outlet shutters are opened, which can effectively reduce dust accumulation and increase the service life of the equipment.

[0020] The beneficial effects of the utility model are as follows: a distribution pattern with the upper and lower parts arranged in the center is adopted to partially raise the PCS to avoid water immersion; at the same time, the PCS is isolated from the heat dissipation duct of the battery compartment to avoid the influence of the PCS due to the large heat generation coefficient and the heat dissipation to the battery pack, and the central arrangement is isolated from the ground to the maximum extent to prevent dust accumulation and shorten the life of the equipment. The middle layout can facilitate debugging and maintenance by the staff, and can avoid high-voltage short circuit caused by water immersion, reduce the accumulation of dust in the air duct of the control module, increase the service life of the equipment, and save cable costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a front view of the energy storage cabinet in the utility model;

[0022] Figure 2 It is a rear view of the energy storage cabinet in the utility model;

[0023] Figure 3 It is a left view of the energy storage cabinet in the utility model.

[0024] The reference numerals in the figure are: 10, outer shell; 11, upper cabinet; 12, high-voltage box; 13, front door; 14, rear door; 15, upper battery pack; 20, middle cabinet; 21, distribution box; 22, PCS module; 23, air inlet shutter; 24, air outlet shutter; 30, lower cabinet; 31, drawer-type storage rack; 32, bottom battery pack. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0026] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0027] Embodiment 1:

[0028] like Figure 1 As shown, this embodiment provides an energy storage cabinet, including a housing 10, characterized in that:

[0029] The outer shell 10 includes three layers, namely an upper cabinet 11, a middle cabinet 20 and a lower cabinet 30, and the upper cabinet 11, the middle cabinet 20 and the lower cabinet 30 are arranged in an up-and-down manner; a front door 13 and a rear door 14 are respectively provided on opposite sides of the outer shell 10; a distribution box 21 and a PCS module 22 are fixedly installed inside the middle cabinet 20, and a high-voltage box 12 is provided inside the upper cabinet 11.

[0030] The horizontal sides of the middle cabinet 20 are respectively provided with an air inlet shutter 23 and an air outlet shutter 24 for ventilation and heat dissipation.

[0031] In the present technical solution, the energy storage cabinet is divided into three layers: upper, middle and lower. The upper and lower layers are respectively used to place battery packs, and the middle layer is used to place PCS, distribution box, etc. PCS modules, high-voltage boxes, distribution box 21 and other modules are easily damaged modules in the energy storage cabinet, so they need to be frequently disassembled and assembled. The central arrangement in the upper and lower directions is conducive to convenient disassembly and maintenance.

[0032] The PCS is partially elevated to prevent water immersion by adopting a distribution pattern with the top and bottom centered. At the same time, the PCS is isolated from the heat dissipation duct of the battery compartment to avoid the impact of the PCS's large heat generation coefficient and heat dissipation to the battery pack. The central layout can ensure that the PCS is isolated from the ground to the maximum extent, preventing dust accumulation and shortening the life of the equipment.

[0033] Embodiment 2:

[0034] like Figure 1-3 As shown, specifically, the height of the middle cabinet 20 is set between 1.1 meters and 1.3 meters.

[0035] In this technical solution, water is highly corrosive to electrical equipment, and water ingress can easily cause electrical components to burn, leading to equipment failure or short circuit. Therefore, once water enters the energy storage cabinet, the equipment will not operate normally. After water ingress, the energy storage cabinet may have safety hazards such as leakage or electric shock, and the life safety of personnel will be threatened.

[0036] Therefore, when the PCS module 22, the high-voltage box 12, and the distribution box 21 are arranged in the center, they are located about 1.2m from the ground, so that the three are not easily immediately soaked in water when working in an environment prone to water soaking. Because the input and output voltages of the PCS module 22 are high voltage, water soaking will cause a short circuit. Compared with the short circuit of the battery pack, the harm caused by the PCS short circuit is greater because the input and output voltages of the PCS are much higher than the input and output voltages of the battery pack. Therefore, the PCS should be raised as much as possible to avoid water soaking.

[0037] In the energy storage cabinet, the PCS module 22, the high-voltage box 12, and the distribution box 21 need to be started up and debugged. At the same time, these three modules need to connect more communication harnesses. Arranging the three in the middle of the energy storage cabinet is conducive to the operator's convenience in debugging and wiring maintenance.

[0038] Embodiment 3:

[0039] like Figure 1 As shown, specifically, a drawer-type storage rack 31 is provided inside the lower cabinet 30, and a bottom battery pack 32 is fixedly arranged in the drawer-type storage rack 31. An upper battery pack 15 is arranged inside the upper cabinet 11. The distribution box 21, the PCS module 22 and the high-voltage box 12 are electrically connected. The middle cabinet 20 is separated from the upper cabinet 11 and the lower cabinet 30 by 25.

[0040] In the present technical solution, the PCS is a module with a larger heat generation than the battery. Sharing the same air duct with the battery pack will cause the operating temperature of the PCS to be transferred to the battery compartment, affecting the heat dissipation of the battery. Therefore, the air ducts of the battery pack and the PCS need to be independently separated. Therefore, 25 are set at the upper and lower ends of the middle cabinet 20 to isolate the heat-concentrated part from the battery pack, thereby avoiding the battery pack from being heated and short-circuited, thereby causing hidden dangers such as fire in the energy storage cabinet.

[0041] When the control module and the PCS are arranged in the center, the air duct is away from the ground when the air inlet shutter 23 and the air outlet shutter 24 are opened, which can effectively reduce dust accumulation and increase the service life of the equipment.

[0042] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. An energy storage cabinet, comprising a housing (10), characterized in that: The housing (10) comprises three layers, namely an upper cabinet (11), a middle cabinet (20) and a lower cabinet (30), and the upper cabinet (11), the middle cabinet (20) and the lower cabinet (30) are arranged in an up-and-down arrangement; a front door (13) and a rear door (14) are respectively provided on opposite sides of the housing (10); a distribution box (21) and a PCS module (22) are fixedly installed inside the middle cabinet (20), and a high-voltage box (12) is provided inside the upper cabinet (11); The horizontal sides of the middle cabinet (20) are respectively provided with air inlet shutters (23) and air outlet shutters (24) for ventilation and heat dissipation; The middle cabinet (20) is arranged at a height between 1.1 meters and 1.3 meters; An upper battery pack (15) is arranged inside the upper cabinet (11); A drawer-type storage rack (31) is provided inside the lower cabinet (30), and a bottom battery pack (32) is fixedly arranged in the drawer-type storage rack (31); The distribution box (21), the PCS module (22) and the high-voltage box (12) are electrically connected.

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