Cold machine overhead type energy storage system
By setting the return air outlet on both side panels adjacent to the chassis in the overhead energy storage system of the cold-air air is solved, and a more efficient return air and a more compact space layout are achieved.
Patent Information
- Application Number
- CN202421469020.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-25
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-06-25
AI Technical Summary
In the case of multiple clusters of cabinets, the return air outlets of the existing overhead refrigerators are arranged on opposite sides, causing each other to compete for air when the return air of adjacent refrigerators, affecting the heat exchange efficiency. In order to avoid this situation, it is necessary to increase the spacing between cabinets or increase the cabinet volume, occupying a large space.
The return air outlet of the refrigerator is set on both adjacent side plates of the chassis, rather than opposite side plates, and the air inlet is set on the opposite side plates, and the air inlet is relatively concentrated to avoid mutual interference between the airflow between the adjacent refrigerator return air outlets.
The return air efficiency of the refrigerator in the case of multi-clustered cabinets is improved, the return air outlet interference between the refrigerators is reduced, and the need to increase the distance between the cabinets or increase the cabinet volume is avoided. It is suitable for situations where space is limited.
Smart Images
Figure CN222980578U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of energy storage systems, and particularly relates to a cold machine top-mounted energy storage system. Background Art
[0002] Energy storage battery systems are important components of modern power systems and smart grids. Energy storage battery systems generally have large battery capacities and high powers, and the heat generated by the internal batteries requires high heat dissipation. Poor heat dissipation will affect the performance and operation reliability of the energy storage battery system. Therefore, effective heat dissipation methods need to be adopted for cooling. The top-mounted cold machine is installed on the top of the energy storage cabinet. The top-mounted cold machine is independently installed on the top of the energy storage cabinet. This layout enables the top-mounted cold machine to operate independently outside the energy storage system and is not affected by the wind blocking of the cabinet, ensuring the stability and efficiency of the cooling effect. Therefore, it has significant advantages compared with the plug-in frame cold machine. However, in the existing top-mounted cold machines, the return air outlets are usually set on the opposite sides. In the case of multi-cluster parallel cabinets, when returning air, adjacent cold machines will compete for air, affecting the heat exchange efficiency. To avoid this situation, a distance of at least 500 mm needs to be reserved between the return air outlets of adjacent cold machines. However, to reserve a suitable distance, the parallel cabinet distance needs to be increased, or the volume of the cabinet needs to be increased, resulting in a large space occupation. Summary of the Utility Model
[0003] The purpose of the utility model is to provide a cold machine top-mounted energy storage system that can improve the return air efficiency of the unit in the case of multi-cluster parallel cabinets.
[0004] To achieve the above purpose, the following technical solutions are adopted in the utility model:
[0005] A cold machine top-mounted energy storage system includes: a cabinet for placing energy storage media, and the cabinets are arranged in a left-right parallel cabinet and / or back-to-back parallel cabinet manner; at least one cold machine is arranged on the top of the cabinet, the cold machine includes a chassis, return air outlets are arranged on two adjacent side plates of the chassis, and an air outlet is arranged on the top plate of the chassis.
[0006] For the cold machine top-mounted energy storage system as described above, optionally, a return air outlet filter is arranged outside the return air outlet, a filter slot extending in the vertical direction is arranged on the chassis, and the return air outlet filter is inserted into the filter slot and can be pulled out upward from the filter slot; and / or, the top plate of the chassis is of a detachable structure.
[0007] For the cold machine top-mounted energy storage system as described above, optionally, the return air outlet is arranged on the side plate on the front of the cold machine, and when parallel cabinets are formed, the front of the cold machine and the front of the cabinet face the same direction.
[0008] For the cold machine top-mounted energy storage system described above, optionally, an exhaust interface is provided on the side plate of the chassis, and the exhaust interface is connected to a liquid supply pipe disposed inside the chassis through an exhaust pipe. The exhaust interface is in a normally closed state when the cold machine is operating.
[0009] For the cold machine top-mounted energy storage system described above, optionally, the exhaust interface, the liquid supply interface, the liquid return interface, and the liquid injection interface are collectively provided on the side plate on the front of the chassis.
[0010] For the cold machine top-mounted energy storage system described above, optionally, a directional guide rail is provided on the top of the cabinet body, and a fixing portion is provided on the chassis. The fixing portion and the directional guide rail are connected by a threaded fastener.
[0011] For the cold machine top-mounted energy storage system described above, optionally, a natural cooling unit and a mechanical refrigeration unit are provided inside the chassis; the natural cooling unit includes a first condenser and a condensation fan; the mechanical refrigeration unit includes a second condenser, a compressor, and an evaporator; the first condenser and the second condenser are adjacently disposed inside the air return opening, and the second condenser is of a frame structure.
[0012] For the cold machine top-mounted energy storage system described above, optionally, the second condenser is in a mouth shape and is disposed along the contour of the first condenser;
[0013] And / or, the second condenser is located outside the first condenser, or the first condenser is located outside the second condenser.
[0014] For the cold machine top-mounted energy storage system described above, optionally, the second condenser is located outside the first condenser, and the first condenser is located between the second condenser and the condensation fan.
[0015] For the cold machine top-mounted energy storage system described above, optionally, the condensation fan is located below the air outlet.
[0016] As can be seen from the above technical solutions, in the present utility model, the air return openings of the top-mounted cold machines are provided on two adjacent side plates of the chassis. Compared with the air inlet openings being provided on opposite side plates, the air inlet openings are relatively concentrated, and there is no relative situation between the air return openings of adjacent cold machines when cabinets are combined. The airflows between the air return openings will not interfere with each other, which can improve the air return efficiency of multiple clusters of combined cabinets, thereby improving the overall efficiency of the unit. Since there is no interference in the air return between adjacent cold machines, there is no need to maintain a large distance between the cold machines to avoid air robbing between adjacent cold machines. Therefore, it is not necessary to increase the volume of the cabinet body, nor is it necessary to increase the distance between combined cabinets, reducing the occupation of space and being applicable to situations with limited space. Description of the Drawings
[0017] To more clearly illustrate the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.
[0018] Figure 1 Schematic diagram of the energy storage system cabinets of the embodiments of the present utility model when combined;
[0019] Figure 2 Schematic diagram of the structure of the chiller of the embodiments of the present utility model;
[0020] Figure 3 Schematic diagram of the partial disassembly structure of the chiller of the embodiments of the present utility model;
[0021] Figure 4 Schematic diagram of the partial structure of the condenser and fan of the chiller of the embodiments of the present utility model;
[0022] Figure 5 Schematic diagram of the partial disassembly structure of the condenser and fan of the chiller of the embodiments of the present utility model.
[0023] The following will further describe in detail the specific embodiments of the present utility model in conjunction with the drawings. Specific Embodiments
[0024] The following will describe the present utility model in detail in conjunction with the drawings. When describing the embodiments of the present utility model in detail, for the convenience of description, the drawings showing the device structure will be enlarged locally not in accordance with the general scale, and the schematic diagrams are only examples and should not limit the scope of protection of the present utility model here. It should be noted that the drawings are in a simplified form and all use non-precise scales, only for the purpose of facilitating and clearly assisting in explaining the embodiments of the present utility model. At the same time, in the description of the present application, terms such as "first" and "second" are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features; terms such as "front", "back", "bottom", "top", "bottom" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model.
[0025] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "connected" and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and can also be the communication inside two components. It can be a wireless connection or a wired connection. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0026] As Figure 1 shown, the energy storage system of this embodiment includes a cabinet 1 and a chiller 2. A battery pack or battery cluster serving as an energy storage medium, as well as electrical components such as a PCS, are arranged inside the cabinet 1. The chiller 2 is arranged on the top of the cabinet 1 and is of a top-mounted structure. The cabinet 1 of this embodiment is a double-cluster battery cabinet. Two chillers 2 are arranged on the top of one cabinet 1, and several cabinets 1 are arranged in a side-by-side and back-to-back manner.
[0027] If the return air inlets of the chillers are located on the opposite sides of the chillers, when arranged in a side-by-side manner, the return air inlets between adjacent chillers are opposite to each other, and there will be mutual interference and air snatching during the return air process, thus affecting the return air efficiency. In order to solve this problem without increasing the volume of the cabinet, the present utility model has improved the layout of the return air inlets of the chillers.
[0028] As Figure 2 and Figure 3 shown, the chiller 2 of this embodiment includes a chassis 2-1. The chassis 2-1 includes a top plate 2-1a, side plates 2-1b, and a bottom plate (not shown). An air outlet is arranged on the top plate 2-1a, and an air outlet filter 3 is arranged at the air outlet. Return air inlets Q ( Figure 1 ) are arranged on two adjacent side plates 2-1b, and a return air inlet filter 4 is arranged at the return air inlets Q. The return air inlets located on the two side plates 2-1b of this embodiment are arranged adjacent to each other.
[0029] The chiller 2 generally has a liquid injection interface, a liquid supply interface, and a liquid return interface. In order to facilitate operations such as liquid addition or maintenance, these interfaces are usually concentrated together, and preferably, the aforementioned interfaces are concentrated on one side plate of the chassis 2-1. For the convenience of description, the side of the chiller 2 where the aforementioned interfaces are arranged is defined as the front of the chiller, and the front orientation of the chiller 2 is the same as the front orientation of the cabinet 1. As Figure 1 shown, the side indicated by the arrow in
[0030] is the front of the cabinet 1 (according to the general understanding, the side of the cabinet where the cabinet door is arranged is the front). Figure 1As shown, when the cabinets are placed side by side or back to back, the return air side of the chiller 2 in this embodiment will be concentrated at a corner of the chiller 2. Taking the direction shown in Figure 1 as an example, the return air side is concentrated on the lower left side of the chiller 2. The opposite sides of the return air openings of adjacent chillers 2 are not each other's return air openings. Therefore, when returning air, there will be no situation where the two opposite return air openings in the chiller room snatch air from each other, and they will not interfere with each other, affecting the unit efficiency. In specific applications, the areas of the two return air openings on one chiller 2 can be equal or unequal. Figure 1 As shown, the opposite sides of the return air openings of adjacent chillers 2 are not each other's return air openings, so that when returning air, there will be no situation where the two opposite return air openings in the chiller room snatch air from each other, and they will not interfere with each other, affecting the unit efficiency. In specific applications, the areas of the two return air openings on one chiller 2 can be equal or unequal.
[0031] As Figure 3 shown, in this embodiment, filter slots 5 extending in the vertical direction are provided on both sides of the return air opening. The return air opening filter 4 can be inserted into the filter slot 5, so as to be fixed on the chassis 2-1. Using an insertion structure to fix the return air opening filter 4 can facilitate the maintenance of maintenance personnel. As long as the return air opening filter 4 is pulled out upward, the return air opening filter 4 can be cleaned or simple fault repair can be carried out. Further, the top plate 2-1a is a detachable structure. If maintenance operations such as overhauling or cleaning the internal components of the chassis 2-1 are required, the top plate 2-1a can be removed. This embodiment provides a convenient "upward" maintenance solution, and basically all overhaul and maintenance work can be completed without disassembling the machine.
[0032] A natural cooling unit, a mechanical refrigeration unit, an electric control unit, etc. are provided in the chassis 2-1. An electric control box cover 6 is provided at the electric control unit. When an electrical abnormality occurs, after removing the top plate 2-1a and the electric control box cover 6, the electric control unit can be inspected.
[0033] The natural cooling unit of this embodiment includes a first condenser 7 and a condensation fan 8. The mechanical refrigeration unit includes a compressor (not shown), a second condenser 9 and an evaporator (not shown). Both the natural cooling unit and the mechanical refrigeration unit can provide coolant to the heat exchange structure provided in the cabinet 1, and the heat exchange structure dissipates heat from electrical components such as energy storage media or PCS.
[0034] Referring to Figure 3 , Figure 4 and Figure 5 , the first condenser 7 and the second condenser 9 of this embodiment are adjacent to each other at the return air opening, and the condensation fan 8 is arranged below the air outlet. The first condenser 7 and the second condenser 9 of this embodiment are both microchannel condensers. The second condenser 9 of this embodiment is located outside the first condenser 7, that is, compared with the first condenser 7, the second condenser 9 is closer to the return air opening. The second condenser 9 is a frame structure and is in an overall "mouth" shape structure ( Figure 5The figure shows a schematic diagram of the second condenser 9 after bending. The "mouth" - shaped structure refers to the shape of the second condenser before bending. Whether the second condenser is bent depends on the setting requirements of the air return opening. When the two air return openings are adjacent on adjacent side plates, bending the second condenser 9 can adapt to the position of the air inlet, but bending the second condenser 9 is not necessary. The second condenser 9 adopts a frame - type structure and is arranged along the contour of the first condenser 7. Thus, even when the first condenser 7 and the second condenser 9 are adjacent, the second condenser 9 hardly blocks the air path of the first condenser 7, has little influence on the air convection formed under the action of the fan, saves space, makes the internal structure of the chassis compact, and is suitable for scenarios with limited space.
[0035] In addition, the first condenser 7 is located between the second condenser 9 and the condensation fan 8. The air convection formed in the chassis 2 - 1 when the condensation fan 8 works can not only exchange heat with the first condenser 7 in the natural cooling mode but also exchange heat with the second condenser 9 in the mechanical refrigeration mode, enhancing the heat dissipation effect of the second condenser 9, serving multiple purposes with one machine, and improving the overall efficiency of the system. Both the first condenser 7 and the second condenser 9 are located at the air return opening. The condensers are close to the air return opening, can better contact the external environment, thus dissipate heat more effectively, and improve the system performance. Since the cooling system is mostly in the mechanical refrigeration mode in most cases, the first condenser 7 and the second condenser 9 do not work simultaneously. After the external air is sucked into the chassis interior through the air return opening and blown upward under the action of the condensation fan 8, the second condenser 9 is arranged outside the first condenser 7, and the first condenser 7 hardly blocks the second condenser 9, and the wind resistance of the second condenser 9 is small, which is beneficial to ensuring the heat dissipation performance of the system. In other embodiments, the first condenser 7 can also be arranged outside the second condenser 9, and the second condenser 9 is closer to the condensation fan 8. In the mechanical refrigeration mode, the condensation fan 8 can dissipate heat from the second condenser 9. In the natural cooling mode, the frame - type structure of the second condenser 9 does not block the first condenser 7 and does not affect the heat dissipation of the first condenser 7 by the condensation fan 8.
[0036] In this embodiment, the first condenser of the natural cooling unit and the second condenser of the mechanical refrigeration unit are arranged close to the air return opening. The two condensers are located inside the air return opening and adopt a compact adjacent arrangement. The second condenser is of a frame - type structure, does not form a blockage in the air path for most of the area of the first condenser, has little influence on the air convection formed under the action of the fan, is convenient for contacting the external environment, can dissipate heat more effectively, and improves the efficiency and performance of the system.
[0037] Such as Figure 2As shown, the chiller 2 of this embodiment is fixed to the top of the cabinet 1 through the guiding rails 10. A fixing part 2-2 is provided on the chassis 2-1, and the fixing part 2-2 and the guiding rails 10 are connected by threaded fasteners. A baffle 10a is provided at the end of the guiding rails 10, which can prevent the chiller 2 from moving beyond the guiding rails 10 during installation, facilitating the installation.
[0038] Optionally, for the convenience of coolant filling, in this embodiment, the exhaust interface is arranged on the front side plate 2-1b of the chassis 2-1. The exhaust interface A, the liquid filling interface B, the liquid supply interface C and the liquid return interface D are centrally arranged on the front side plate 2-1b of the chiller 2. The exhaust interface A is connected to the liquid supply pipeline (not shown) inside the chassis through an exhaust pipe (not shown). The exhaust interface A is in a normally closed state during the operation of the chiller. After the exhaust interface is placed outside, there is no need to set an exhaust port on the liquid cooling pipeline inside the chassis. When filling the liquid, the exhaust interface can be opened without removing the top plate, reducing the operation steps and facilitating the liquid filling operation.
[0039] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A chiller top-mounted energy storage system, characterized in that: include: Cabinets for accommodating energy storage media, wherein the cabinets are arranged in a left-right and / or back-to-back manner; At least one cold machine is arranged on the top of the cabinet, and the cold machine comprises a chassis, two adjacent side panels of the chassis are provided with return air ports, and a top panel of the chassis is provided with an air outlet.
2. The refrigerator top-mounted energy storage system according to claim 1, characterized in that: A return air filter is disposed on the outer side of the return air outlet, a filter slot extending in a vertical direction is disposed on the chassis, the return air filter is inserted into the filter slot, and can be pulled out of the filter slot upwards; And / or, the top plate of the chassis is a detachable structure.
3. The refrigerator top-mounted energy storage system according to claim 1, characterized in that: The return air outlet is arranged on the side plate on the front of the refrigerator, and the front of the refrigerator and the front of the cabinet body face the same direction when the cabinets are connected.
4. The refrigerator top-mounted energy storage system according to claim 1, characterized in that: An exhaust interface is provided on the side plate of the chassis, and the exhaust interface is connected to a liquid supply pipeline provided in the chassis through an exhaust pipe. When the cold machine is running, the exhaust interface is in a normally closed state.
5. The refrigerator top-mounted energy storage system according to claim 4, characterized in that: The exhaust interface, the liquid supply interface, the liquid return interface and the liquid injection interface are centrally arranged on the side panel on the front side of the chassis.
6. The refrigerator top-mounted energy storage system according to claim 1, characterized in that: A directional guide rail is arranged on the top of the cabinet, a fixing portion is arranged on the chassis, and the fixing portion and the directional guide rail are connected via a threaded fastener.
7. The refrigerator top-mounted energy storage system according to claim 1, characterized in that: A natural cooling unit and a mechanical refrigeration unit are provided in the chassis; The natural cooling unit includes a first condenser and a condensing fan; The mechanical refrigeration unit comprises a second condenser, a compressor and an evaporator; The first condenser and the second condenser are adjacently arranged on the inner side of the return air port, and the second condenser is a frame structure.
8. The refrigerator top-mounted energy storage system according to claim 7, characterized in that: The second condenser is in a square shape, and the second condenser is arranged along the outline of the first condenser; And / or, the second condenser is located outside the first condenser, or the first condenser is located outside the second condenser.
9. The refrigerator top-mounted energy storage system according to claim 7, characterized in that: The second condenser is located outside the first condenser, and the first condenser is located between the second condenser and the condensing fan.
10. The refrigerator top-mounted energy storage system according to claim 7 or 9, characterized in that: The condensing fan is located below the air outlet.