Energy storage cabinet with uniform air supply

Abstract

The utility model provides an energy storage cabinet capable of uniformly supplying air, which comprises a cabinet body, a power supply device and an energy storage device, the at least one row of battery devices are arranged in the battery compartment along the length direction of the battery compartment, each row of battery devices comprises a plurality of groups of battery stacks, each group of battery stacks comprises a confluence cabinet and at least one battery rack which are arranged in a matched manner, and battery modules are arranged on the battery racks; each group of heat dissipation system corresponds to each row of battery devices, each group of heat dissipation system comprises an air conditioning unit, an air supply main air duct arranged in the battery compartment and a plurality of air supply branch air ducts, an air outlet of the air conditioning unit is communicated with the air supply main air duct, the air supply main air duct is communicated with the plurality of air supply branch air ducts, and the air supply branch air ducts are arranged at the tops of the corresponding battery devices; and each air supply branch air duct is communicated with one group of battery stacks in the corresponding battery device, and a fan is arranged in each air supply branch air duct so as to supply air to the battery racks in the battery stacks. According to the invention, the uniformity of heat dissipation airflow supply among the battery racks in the energy storage cabinet can be improved.

Description

Technical Field

[0001] This application relates to the technical field of electrochemical energy storage, and particularly to an energy storage cabinet with uniform air supply. Background Art

[0002] Under the background of the rapid development of the new energy industry, energy storage, as an important part of new energy power generation such as wind and light in peak shaving and frequency modulation, has received increasing investment and attention. The battery cabinet is the main part of the energy storage system, and the batteries contained therein can store and release electrical energy. However, the uniform temperature control of the entire cabinet has always been a difficult point in system design. There is a problem of uneven supply of cooling airflows between the battery racks in the existing large-size energy storage cabinets, and their heat dissipation structures need to be improved. Summary of the Utility Model

[0003] To solve the above technical problems, this application provides an energy storage cabinet with uniform air supply, which can improve the uniformity of the supply of cooling airflows between the battery racks in the energy storage cabinet.

[0004] The technical solution provided by this application is as follows:

[0005] An energy storage cabinet with uniform air supply, comprising:

[0006] A cabinet body, in which a battery compartment is provided;

[0007] At least one row of battery devices arranged along the length direction of the battery compartment in the battery compartment, each row of the battery devices comprising multiple groups of battery stacks, each group of the battery stacks comprising a matching busbar cabinet and at least one battery rack, and battery modules are arranged on the battery rack;

[0008] A set of heat dissipation systems corresponding to each row of the battery devices, each set of the heat dissipation systems comprising an air-conditioning unit, a main air supply duct arranged in the battery compartment, and a plurality of air supply branch ducts. Among them, the air outlet of the air-conditioning unit is communicated with the main air supply duct, the main air supply duct is communicated with the plurality of air supply branch ducts, the air supply branch ducts are arranged at the top of the corresponding battery devices, each air supply branch duct is respectively communicated with a group of the battery stacks in the corresponding battery device, and a fan is arranged in each air supply branch duct to supply air to the battery racks in the battery stacks.

[0009] Preferably, in the energy storage cabinet with uniform air supply, it further comprises: a main return air duct arranged in the battery compartment along the length direction of the battery compartment, each group of the battery stacks is communicated with the main return air duct, and the main return air duct is further communicated with the air return opening of the air-conditioning unit.

[0010] Preferably, in the energy storage cabinet with uniform air supply, there are two rows of the battery devices, and the two rows of the battery devices are symmetrically arranged in the battery compartment, and the main return air duct is arranged in the middle of the two rows of the battery devices.

[0011] Preferably, in the energy storage cabinet with uniform air supply, a fan is arranged in each battery rack. Among them, the fan in the battery rack is used to form an air flow flowing from the wall surface of the battery compartment to the middle of the battery compartment.

[0012] Preferably, the energy storage cabinet with uniform air supply further includes: a control system, wherein:

[0013] The control system includes a controller and temperature sensors installed in each battery rack;

[0014] The controller is connected to the temperature sensors, the fans in the air supply branch ducts, the fans in the battery racks and the air conditioner unit;

[0015] The temperature sensors are used to detect the temperature of the battery modules;

[0016] The controller is used to control the start and stop of the fans in the air supply branch ducts, the fans in the battery racks and the air conditioner unit according to the temperature of the battery modules.

[0017] Preferably, in the energy storage cabinet with uniform air supply, the air conditioner unit is installed on one side in the width direction of the cabinet body, and in each row of the battery devices, based on the distances between multiple battery stacks and the air conditioner units in the corresponding heat dissipation systems, in the order from near to far, the rated air volume and rated static pressure of the fans arranged in the air supply branch ducts communicating with the corresponding battery stacks decrease in sequence.

[0018] Preferably, in the energy storage cabinet with uniform air supply, there are two battery racks in each battery stack, and the busbar cabinet in each battery stack is arranged in the middle of the two battery racks.

[0019] Preferably, in the energy storage cabinet with uniform air supply, a control cabinet and a fire cabinet are further arranged in the battery compartment.

[0020] Preferably, in the energy storage cabinet with uniform air supply, an electrical compartment is further arranged in the cabinet body, and the electrical compartment and the battery compartment are isolated by a partition.

[0021] Preferably, in the energy storage cabinet with uniform air supply, a transformer, an energy storage converter and a power distribution system are arranged in the electrical compartment.

[0022] An energy storage cabinet with uniform air supply provided by the present application includes: a cabinet body, in which a battery compartment is provided; at least one row of battery devices arranged along the length direction of the battery compartment, each row of battery devices includes multiple groups of battery stacks, each group of battery stacks includes a matching busbar cabinet and at least one battery rack, and battery modules are arranged on the battery rack; wherein, during the process of the battery module outputting energy outward and storing energy inward, discharging and charging occur, and a large amount of heat will be generated during the process, and heat dissipation is required during the charging and discharging process of the battery rack; the above-mentioned energy storage cabinet with uniform air supply further includes: a set of heat dissipation systems corresponding to each row of battery devices, each set of heat dissipation systems includes an air-conditioning unit, a main air supply duct arranged in the battery compartment and a plurality of air supply branch ducts, wherein the air outlet of the air-conditioning unit is communicated with the main air supply duct, the main air supply duct is communicated with the plurality of air supply branch ducts, the air supply branch ducts are arranged at the top of the corresponding battery device, each air supply branch duct is respectively communicated with a group of battery stacks in the corresponding battery device, and a fan is arranged in each air supply branch duct, so as to supply air to the battery rack in the battery stack through a separate air supply branch duct corresponding to each battery stack, and through the independent fan arranged in each air supply branch duct, independent supply and control of the heat dissipation air flow of each battery rack are realized, and the air supply distance of each air supply branch duct can be effectively guaranteed, and the uniformity of the heat dissipation air flow supply between the battery racks in the energy storage cabinet is improved. In summary, it can be known that the energy storage cabinet provided by the present application can improve the uniformity of the heat dissipation air flow supply between the battery racks in the energy storage cabinet. Description of the Drawings

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings described below are only some embodiments recorded in the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0024] Figure 1 It is a top view of the internal structure of an energy storage cabinet with uniform air supply provided by an embodiment of the present application;

[0025] Figure 2 It is a top view of the internal structure of the battery compartment provided by an embodiment of the present application;

[0026] Figure 3 It is a cross-sectional view of the internal structure of the battery compartment provided by an embodiment of the present application;

[0027] Figure 4 It is another cross-sectional view of the internal structure of the battery compartment provided by an embodiment of the present application;

[0028] Figure 5 It is a schematic diagram of the air flow direction in the battery compartment provided by an embodiment of the present application. Detailed implementation manners

[0029] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0030] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly disposed on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0031] It should be understood that the orientation or positional relationship indicated by terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to this application.

[0032] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, the meaning of "a plurality" and "several" is two or more, unless otherwise specifically defined.

[0033] It should be noted that the structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those skilled in this technology to understand and read, and are not used to limit the limiting conditions under which this application can be implemented. Therefore, they do not have technical substantive significance. Any modification of the structure, change of the ratio relationship or adjustment of the size, without affecting the effects that this application can produce and the purposes that can be achieved, should still fall within the scope covered by the technical content disclosed in this application.

[0034] The embodiments of this application are written in a progressive manner.

[0035] As Figures 1 to 5 shown, the embodiments of this application provide an energy storage cabinet with uniform air supply, including:

[0036] Cabinet 1, in which a battery compartment 101 is provided; at least one row of battery devices 2 arranged along the length direction of the battery compartment 101, each row of battery devices 2 including multiple groups of battery stacks, each group of battery stacks including a matching busbar cabinet 202 and at least one battery rack 201, and battery modules are arranged on the battery rack 201;

[0037] Specifically, in some embodiments, the cabinet 1 is a cuboid-shaped hollow box with certain structural strength and dust and water protection performance. The partition 102 divides the battery compartment 101 and the electrical compartment 103 inside the cabinet 1. The partition 102 can adopt a fireproof wall; along the length direction of the battery compartment 101, at least one row of battery devices 2 is arranged in the battery compartment 101. Each row of battery devices 2 includes multiple groups of battery stacks. Each group of battery stacks includes a matching busbar cabinet 202 and at least one battery rack 201. Battery modules are arranged on the battery rack 201. Among them, the battery device 2 is installed at the bottom of the battery compartment 101. At least one battery rack 201 and one busbar cabinet 202 in each group of battery stacks form a single-phase output. The battery modules on the battery rack 201 have a certain series-parallel electrical connection relationship. The battery modules discharge and charge during the process of outputting energy outward and storing energy inward, and a large amount of heat will be generated during the process. The battery rack 201 needs to be cooled during the charging and discharging process; in other embodiments, a control cabinet 7 and a fire cabinet 8 are also arranged in the battery compartment 101, and a transformer, an energy storage converter, and a power distribution system are arranged in the electrical compartment 103. Among them, the specific structures of the control cabinet 7, the fire cabinet 8, the transformer, the energy storage converter, and the power distribution system can refer to the existing structures, and will not be elaborated in this embodiment.

[0038] There is a problem of uneven supply of cooling airflows between the battery racks in the existing large-size energy storage cabinets, and their cooling structures need to be improved. In order to improve the uniformity of the supply of cooling airflows between the battery racks in the energy storage cabinet, the energy storage cabinet with uniform air supply described above further includes:

[0039] A set of cooling systems corresponding to each row of battery devices 2. Each set of cooling systems includes an air-conditioning unit 3, a main air supply duct 401 arranged in the battery compartment 101, and multiple air supply branch ducts 402. Among them, the air outlet of the air-conditioning unit 3 is communicated with the main air supply duct 401, the main air supply duct 401 is communicated with the multiple air supply branch ducts 402, the air supply branch ducts 402 are arranged at the top of the corresponding battery device 2, each air supply branch duct 402 is respectively communicated with a group of battery stacks in the corresponding battery device 2, and a fan 5 is arranged in each air supply branch duct 402 to supply air to the battery racks 201 in the battery stacks.

[0040] Specifically, the air conditioner unit 3 can be installed on one side of the cabinet 1 in the width direction. The outlet air flow generated by the air conditioner unit 3 enters the main air supply duct 401 from the air outlet, and then enters each air supply branch duct 402 from the main air supply duct 401. Each air supply branch duct 402 is respectively connected to a group of battery stacks in the corresponding battery device 2. A fan 5 is provided in each air supply branch duct 402. In this way, through the individual air supply branch duct 402 corresponding to each battery stack, air is supplied to the battery racks 201 in the battery stack, and through the independent fan 5 provided in each air supply branch duct 402, independent supply and control of the cooling air flow for each battery rack 201 are achieved, which can effectively ensure the air supply distance of each air supply branch duct 402 and improve the uniformity of the supply of the cooling air flow between the battery racks 201 in the energy storage cabinet. In summary, it can be seen that the energy storage cabinet provided in this embodiment can improve the uniformity of the supply of the cooling air flow between the battery racks 201 in the energy storage cabinet.

[0041] In other embodiments of the present application, the energy storage cabinet with uniform air supply further includes: a main return air duct 6 arranged in the battery compartment 101 along the length direction of the battery compartment 101. Each group of battery stacks is connected to the main return air duct 6, and the main return air duct 6 is also connected to the return air inlet of the air conditioner unit 3. Specifically, when the cooling air flow completes the cooling of the battery module, it returns to the return air inlet of the air conditioner unit 3 through the main return air duct 6 arranged in the battery compartment 101 along the length direction of the battery compartment 101, completing a cycle of heat dissipation.

[0042] In other embodiments of the present application, there are two rows of battery devices 2 in total, and the two rows of battery devices 2 are symmetrically arranged in the battery compartment 101, and the main return air duct 6 is arranged in the middle of the two rows of battery devices 2.

[0043] Specifically, as shown in Figure 2 , the layout of the battery compartment 101 is symmetric front and back, and two rows of battery devices 2 are arranged. Each row of battery devices 2 can adopt the same electromagnetic stack setting. Correspondingly, the two heat dissipation systems corresponding to the two rows of battery devices 2 can also be symmetrically arranged with respect to the middle plane of the battery compartment 101. The air conditioner units 3 in the two heat dissipation systems can be symmetrically arranged on the end doors on one side of the cabinet 1. The supply and return of the cooling air flow are the same in the upper and lower two rows of battery devices 2. After the air flow completes the cooling of the battery module, it returns to the return air inlets of the two air conditioner units 3 through the main return air duct 6 in the middle of the two rows of battery devices 2 in the battery compartment 101, completing a cycle of heat dissipation. Through the above symmetrical arrangement, on the basis of sharing the same main return air duct 6, uniform supply of the cooling air flow between the battery racks 201 of the two rows of battery devices 2 in the energy storage cabinet can be achieved.

[0044] In other embodiments of the present application, a fan is provided in each battery rack 201. Among them, the fan in the battery rack 201 is used to form an air flow flowing from the wall surface of the battery compartment 101 to the middle of the battery compartment 101.

[0045] Specifically, in combination with Figure 3 , Figure 4 As shown, when the air conditioner unit 3 starts to provide a cooling air flow, the fans 5 in each air supply branch duct 402 are turned on to provide an air flow power source for the branch channels that need to be cooled, and the cold cooling air supplied by the air conditioner unit 3 is transported to the rear channel 9 (close to the wall surface in the length direction of the battery compartment 101) of the battery rack 201 that needs to be cooled in the battery stack of the corresponding battery device 2. Then, the fans arranged in the battery rack 201 extract the refrigerated air to cool the corresponding battery modules, and then flow out from the front part (the side close to the main return air duct 6) of each battery rack 201. Finally, it returns to the air return port of the air conditioner unit 3 through the main return air duct 6 in the middle of the two rows of battery devices 2, thereby forming a stable cooling air flow cycle and improving the cooling effect of the battery compartment 101.

[0046] In other embodiments of the present application, the above-mentioned energy storage cabinet with uniform air supply further includes: a control system, wherein: the control system includes a controller and temperature sensors installed in each battery rack 201; the controller is connected to the temperature sensors, the fans 5 in the air supply branch ducts 402, the fans in the battery racks 201, and the air conditioner unit 3; the temperature sensors are used to detect the temperatures of the battery modules; the controller is used to control the start and stop of the fans 5 in the air supply branch ducts 402, the fans in the battery racks 201, and the air conditioner unit 3 according to the temperatures of the battery modules.

[0047] Specifically, the number of temperature sensors can be multiple, and the temperature sensors can be arranged at the battery modules of each battery rack 201 to detect the temperatures of each battery module; the controller compares the temperatures of the battery modules detected by the temperature sensors with a preset temperature threshold T1 °C. When the temperature of a certain battery module is higher than the preset temperature threshold T1 °C, the controller controls the air conditioner unit 3 to start refrigeration and supply cold cooling air. At the same time, the controller controls the fans 5 in the air supply branch ducts 402 corresponding to the battery module to start, providing an air flow power source for the air supply branch ducts 402 that need to be cooled, transporting the cold cooling air supplied by the air conditioner unit 3 to the rear channel 9 of the battery rack 201 that needs to be cooled, and then controlling the fans inside the battery rack 201 to start, extracting the refrigerated air to cool the corresponding high-temperature battery modules. Until the temperature sensors detect again that the temperatures of all battery modules are lower than (T1 - 5) °C, the controller controls the air conditioner unit 3 to shut down and stop working, and controls the fans 5 in the corresponding air supply branch ducts 402 to close, realizing low-power and energy-saving operation. In this embodiment, through the above settings, uniform air supply to each battery rack 201 over a long distance can be achieved, and independent and automatic air supply control and temperature adjustment for each battery stack can be realized.

[0048] In other embodiments of the present application, there are two battery racks 201 in each battery stack, and the busbar cabinet 202 in each battery stack is arranged in the middle of the two battery racks 201; specifically, in combination with Figure 5 As shown, the battery device 2 includes 6 battery racks 201 and 3 busbar cabinets 202, which are installed side by side. Every 2 battery racks 201 and 1 busbar cabinet 202 form a single-phase output, with a total of three-phase outputs. The busbar cabinet 202 of each phase is installed in the middle of 2 battery racks 201. Through the above arrangement, the battery racks 201 of each row of the battery device 2 are arranged in an orderly manner, which is beneficial to the uniform temperature control of the entire energy storage cabinet.

[0049] In other embodiments of the present application, the air-conditioning unit 3 is installed on one side in the width direction of the cabinet 1, and in each row of the battery device 2, based on the distances between multiple battery stacks and the air-conditioning units 3 in the corresponding heat dissipation system, in the order from near to far, the rated air volume and rated static pressure of the fans 5 arranged in the air supply branch ducts 402 communicating with the corresponding battery stacks are gradually reduced.

[0050] Specifically, in combination with Figure 5 As shown, it is assumed that the 6 battery racks 201 include J1, J2, J3, J4, J5, and J6, and the 3 busbar cabinets include A1, B1, and C1. J1 and J2 correspond to the A1-phase output, J3 and J4 correspond to the B1-phase output, and J5 and J6 correspond to the C1-phase output. J1, J2, and A1 are close to the air-conditioning unit 3, J3, J4, and B1 are in the middle position, and J5, J6, and C1 are far from the air-conditioning unit 3. After the air-conditioning unit 3 discharges air, the air flow first passes through the main air supply duct 401, and then passes through the air supply branch ducts 402 to flow into the battery racks 201 of the A1, B1, and C1 phases respectively, to dissipate heat from the battery modules installed on the battery racks 201. At the same time, fans 5 are respectively arranged in the air supply branch ducts 402 corresponding to the A1, B1, and C1 phases. The fans 5 are installed at positions close to the battery racks 201 of each phase. Assuming from right to left, the rated air volumes of the three fans 5 are QA, QB, and QC in sequence, and the rated static pressures are PA, PB, and PC in sequence. The relationship between the rated air volume and the rated static pressure is QA < QB < QC, and PA < PB < PC, to ensure that the supply of the three-phase heat dissipation flow is relatively consistent. The specific data need to be determined by considering factors such as the air duct resistance, the wind force of the air-conditioning unit 3, and the fan speed inside the battery rack 201. After the air flow completes the cooling of the battery modules, it returns to the air-conditioning unit 3 through the return air main duct 6 in the middle of the two rows of the battery device 2 in the battery compartment 101, completing a cycle of heat dissipation.

[0051] The foregoing description of the disclosed embodiments enables those skilled in the art to practice or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An energy storage cabinet with uniform air supply, characterized in that, Comprising: A cabinet body, in which a battery compartment is provided; At least one row of battery devices arranged along the length direction of the battery compartment, each row of the battery devices includes multiple groups of battery stacks, each group of the battery stacks includes a matching busbar cabinet and at least one battery rack, and battery modules are arranged on the battery rack; A set of heat dissipation systems corresponding to each row of the battery devices, each set of the heat dissipation systems includes an air-conditioning unit, a main air supply duct arranged in the battery compartment, and a plurality of air supply branch ducts. Among them, the air outlet of the air-conditioning unit is communicated with the main air supply duct, the main air supply duct is communicated with the plurality of air supply branch ducts, the air supply branch ducts are arranged at the top of the corresponding battery devices, each air supply branch duct is respectively communicated with a group of the battery stacks in the corresponding battery device, and a fan is arranged in each air supply branch duct to supply air to the battery rack in the battery stack.

2. The energy storage cabinet with uniform air supply according to claim 1, wherein Further comprising: A main return air duct arranged in the battery compartment along the length direction of the battery compartment, each group of the battery stacks is communicated with the main return air duct, and the main return air duct is also communicated with the air return port of the air-conditioning unit.

3. The air supply-uniform energy storage cabinet according to claim 2, wherein, There are two rows of the battery devices in total, and the two rows of the battery devices are symmetrically arranged in the battery compartment, and the main return air duct is arranged in the middle of the two rows of the battery devices.

4. The energy storage cabinet with uniform air supply according to claim 3, characterized in that A fan is arranged in each battery rack. Among them, the fan in the battery rack is used to form an air flow flowing from the wall surface of the battery compartment to the middle of the battery compartment.

5. The air supply uniform energy storage cabinet according to claim 4, wherein, Further comprising: A control system, wherein: The control system includes a controller and temperature sensors installed in each battery rack; The controller is connected to the temperature sensors, the fans in the air supply branch ducts, the fans in the battery racks, and the air-conditioning unit; The temperature sensors are used to detect the temperature of the battery modules; The controller is used to control the start and stop of the fans in the air supply branch ducts, the fans in the battery racks, and the air-conditioning unit according to the temperature of the battery modules.

6. The energy storage cabinet with uniform air supply according to claim 1, characterized in that, The air-conditioning unit is installed on one side of the cabinet body in the width direction, and in each row of the battery devices, based on the distances between multiple groups of the battery stacks and the air-conditioning unit in the corresponding heat dissipation system, in the order from near to far, the rated air volume and rated static pressure of the fans arranged in the air supply branch ducts communicated with the corresponding battery stacks are gradually reduced.

7. The energy storage cabinet with uniform air supply according to claim 1, characterized in that, There are two battery racks in each battery stack, and the busbar cabinet in each battery stack is arranged in the middle of the two battery racks.

8. The energy storage cabinet with uniform air supply according to claim 1, wherein A control cabinet and a fire cabinet are also arranged in the battery compartment.

9. The air supply uniform energy storage cabinet according to claim 1, characterized in that An electrical compartment is also arranged in the cabinet body, and the electrical compartment and the battery compartment are isolated by a partition.

10. The energy storage cabinet with uniform air supply according to claim 9, characterized in that, A transformer, an energy storage inverter, and a power distribution system are arranged in the electrical compartment.

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