Energy storage cabinet and power storage system

Abstract

The present application relates to the technical field of energy storage equipment, and in particular to an energy storage cabinet and a power storage system. The energy storage cabinet includes a cabinet body, an electronic control device, a battery pack, a detection device and a liquid injection device. The cabinet body includes a power storage chamber and a control chamber that are sealed from each other. The electronic control device is arranged in the control chamber, and the battery pack is arranged in the power storage chamber. The detection device is arranged in the cabinet body to detect a fire in the cabinet body. The liquid injection device is connected to the power storage chamber, and the detection device is communicatively connected to the liquid injection device, so that when the detection device detects a fire, the liquid injection device can inject coolant into the power storage chamber. According to the energy storage cabinet and power storage system provided by the present application, the liquid injection device can inject coolant into the power storage chamber, so that the battery pack in the power storage chamber can be immersed in the coolant, so that the fire can be quickly extinguished and the heat generated by the fire can be quickly cooled by the coolant, effectively suppressing the heat diffusion caused by the fire and effectively reducing the losses caused by the fire.

Description

Technical Field

[0001] The present application relates to the technical field of energy storage equipment, and in particular to an energy storage cabinet and a power storage system. Background Art

[0002] Energy storage cabinets are basic equipment that stores energy through media or devices and releases it when needed. Energy storage mainly refers to electrical energy storage. Energy storage cabinets usually have several groups of battery packs to store and release electricity through the battery packs. During the process of storing and releasing electrical energy, the battery pack will generate a lot of heat. If the circuit in the energy storage cabinet is abnormal or the battery pack fails, the battery pack may even catch fire and explode.

[0003] In order to ensure the safety of the energy storage cabinet, a fire extinguishing device is usually installed in the energy storage cabinet. The fire extinguishing device usually includes a fire extinguishing agent container, a nozzle and a sensor. The nozzle is connected to the fire extinguishing agent container. When the sensor senses a fire in the energy storage cabinet, the fire extinguishing agent in the fire extinguishing agent container is sprayed into the energy storage cabinet through the nozzle to extinguish the fire.

[0004] However, due to the limited space in the energy storage cabinet, the fire extinguishing agent capacity in the fire extinguishing agent container is limited, making it difficult to extinguish all fires; and even if the fire extinguishing device can extinguish the fire, it is difficult to suppress the heat diffusion caused by the fire, which not only easily causes the extinguished fire to reignite, but may even cause the battery pack where no fire has occurred to be damaged due to overheating. Summary of the invention

[0005] The purpose of the present application is to provide an energy storage cabinet and a power storage system, so as to solve the technical problems existing in the prior art to a certain extent that the space of the energy storage cabinet is limited, the fire extinguishing agent capacity in the fire extinguishing agent container is limited, and it is difficult to extinguish all fires; and even if the fire extinguishing device can extinguish the fire, it is difficult to suppress the heat diffusion caused by the fire, which not only easily causes the extinguished fire to reignite, but even causes the battery pack where no fire has occurred to be damaged due to overheating.

[0006] According to a first aspect of the present application, there is provided an energy storage cabinet, comprising a cabinet body, an electric control device, a battery pack, a detection device and a liquid injection device, wherein the cabinet body comprises a power storage cavity and a control cavity sealed from each other, the electric control device is arranged in the control cavity, and the battery pack is arranged in the power storage cavity;

[0007] The detection device is arranged in the cabinet body to detect the fire condition in the cabinet body;

[0008] The liquid injection device is in communication with the electricity storage chamber, and the detection device is in communication connection with the liquid injection device, so that when the detection device detects a fire, the liquid injection device can inject cooling liquid into the electricity storage chamber.

[0009] Preferably, the battery pack group includes a plurality of battery packs, and each of the battery packs reaches the IP67 protection level.

[0010] Preferably, the battery pack comprises a sensing unit, a battery cell group and an aerosol ejection unit, and the sensing unit is communicatively connected with the battery cell group and the aerosol ejection unit respectively;

[0011] The sensing unit is disposed in the battery pack and is used to detect the battery cell group;

[0012] When the sensing unit detects that the battery cell group reaches the ignition limit value, the aerosol spraying unit sprays aerosol toward the battery cell group.

[0013] Preferably, it also includes a water cooling unit, a water outlet waterway and a water return waterway, and each of the battery packs includes a water cooling plate;

[0014] The water cooling unit is arranged in the control chamber, and the water cooling unit supplies liquid to the water cooling plate via the water outlet waterway, and the water cooling plate returns water to the water cooling unit via the water return waterway.

[0015] Preferably, the water outlet waterway comprises a main water outlet road and a plurality of water outlet branches, the main water outlet road is connected to the water cooling unit, the water outlet branches are all connected to the main water outlet road, and each of the battery packs is connected to the water outlet waterway via the water outlet branches;

[0016] The water return circuit includes a main water return circuit and a plurality of water return branches, the main water return circuit is connected to the water cooling unit, the water return branches are all connected to the main water return circuit, and each of the battery packs is connected to the water return circuit via the water return branches;

[0017] The return water channel also includes an air release valve, which is arranged at the highest point of the return water main channel.

[0018] Preferably, the cabinet body comprises a partition, and the power storage chamber and the control chamber are separated by the partition;

[0019] The partition is provided with a plurality of quick-insertion parts, and the electric control device is electrically connected to the battery pack via the quick-insertion parts.

[0020] Preferably, the cabinet body further includes a first cabinet door and a second cabinet door, the first cabinet door is arranged in the control cavity, and the second cabinet door is arranged in the power storage cavity.

[0021] Preferably, the first cabinet door comprises a cabinet door body, an insect-proof net and a louver, the cabinet door body is provided with a ventilation grille, the louver cover is arranged on the ventilation grille, and the insect-proof net is laid between the cabinet door body and the louver;

[0022] and / or,

[0023] The second cabinet door is a sealed door, and the liquid injection device is arranged on the second cabinet door.

[0024] Preferably, it also includes a fire extinguishing agent spraying unit that is communicatively connected to the detection device, and the fire extinguishing agent spraying unit is arranged on the top of the power storage chamber. When the detection device detects a fire, the fire extinguishing agent spraying unit can spray the fire extinguishing agent into the power storage chamber.

[0025] According to a second aspect of the present application, there is provided a power storage system, comprising an energy storage cabinet as described in any of the above technical solutions, and thus having all the beneficial technical effects of the energy storage cabinet, which will not be described in detail herein.

[0026] Compared with the prior art, the beneficial effects of this application are:

[0027] The energy storage cabinet provided by the present application is provided with a power storage chamber and a control chamber sealed from each other in a cabinet body, an electric control device is provided in the control chamber, a battery pack is provided in the above-mentioned power storage chamber, and a liquid injection device is connected to the power storage chamber, and a detection device is communicatively connected to the liquid injection device. Thus, on the one hand, when the detection device detects a fire in the cabinet body, the detection device can send an instruction to the liquid injection device, so that the liquid injection device can inject coolant into the power storage chamber, so that the battery pack in the power storage chamber can be immersed in the coolant, so that the fire can be quickly extinguished and the heat generated by the fire can be quickly cooled by the coolant, thereby effectively suppressing the heat diffusion caused by the fire; on the other hand, the power storage chamber and the control chamber are separated and sealed from each other, so that the coolant is effectively blocked from flowing to the control chamber, so that the probability of the electric control device being damaged by being immersed in the coolant is effectively reduced, and the loss caused by the fire is effectively reduced.

[0028] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0030] Figure 1 A schematic diagram of the axonometric structure of an energy storage cabinet provided in an embodiment of the present application;

[0031] Figure 2 A schematic diagram of a partial structure of an energy storage cabinet provided in an embodiment of the present application;

[0032] Figure 3 A schematic diagram of another partial structure of the energy storage cabinet provided in an embodiment of the present application;

[0033] Figure 4 A schematic diagram of the exploded structure of the first cabinet door provided in an embodiment of the present application;

[0034] Figure 5 A schematic diagram of another exploded structure of the first cabinet door provided in an embodiment of the present application;

[0035] Figure 6 This is a schematic diagram of the axonometric structure of the cabinet body provided in an embodiment of the present application.

[0036] Reference numerals:

[0037] 10-support frame; 11-first cabinet door; 111-cabinet door body; 1111-ventilation grille; 112-insect net; 113-louver; 1131-blade; 1132-first sealing gasket; 114-air duct; 1141-second sealing gasket; 12-second cabinet door; 13-partition; 131-quick plug-in part; 21-water cooling unit; 211-outlet waterway; 2111-outlet main road; 2112-outlet branch road; 212-return waterway; 2121-return main road; 2122-return branch road; 213-vent valve; 22-energy storage inverter; 31-battery pack; 32-high-voltage box; 33-low-voltage device; 4-liquid injection interface; 41-fire extinguishing agent container; 42-nozzle; 5-detection device.

[0038] F1-first direction; F2-second direction; F3-third direction. DETAILED DESCRIPTION

[0039] The technical solution of the present application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0040] The components of the embodiments of the present application generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed, but merely represents the selected embodiments of the present application.

[0041] Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of this application.

[0042] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present 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 therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0043] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0044] Refer to the following Figures 1 to 6 An energy storage cabinet and a power storage system according to some embodiments of the present application are described.

[0045] See also Figures 1 to 6 As shown, an embodiment of the first aspect of the present application provides an energy storage cabinet, which includes a cabinet body, an electric control device, a battery pack, a detection device 5 and a liquid injection device. The cabinet body includes a power storage chamber and a control chamber that are sealed from each other, the electric control device is arranged in the control chamber, and the battery pack is arranged in the power storage chamber. The detection device 5 is arranged in the cabinet body to detect a fire in the cabinet body. The liquid injection device is connected to the power storage chamber, and the detection device 5 is communicatively connected to the liquid injection device, so that when the detection device 5 detects a fire, the liquid injection device can inject coolant into the power storage chamber.

[0046] The energy storage cabinet provided according to the above technical features is provided with a storage chamber and a control chamber sealed from each other in the cabinet body, an electric control device is provided in the control chamber, a battery pack is provided in the above-mentioned storage chamber, and a liquid injection device is connected to the storage chamber, and the detection device 5 is communicatively connected to the liquid injection device. Thus, on the one hand, when the detection device 5 detects a fire in the cabinet body, the detection device 5 can send an instruction to the liquid injection device, so that the liquid injection device can inject coolant into the storage chamber, so that the battery pack in the storage chamber can be immersed in the coolant, so that the fire can be quickly extinguished and the heat generated by the fire can be quickly cooled by the coolant, thereby effectively suppressing the heat diffusion caused by the fire. On the other hand, the storage chamber and the control chamber are separated and sealed from each other, so that the coolant is effectively blocked from flowing to the control chamber, so that the probability of the electric control device being damaged by being immersed in the coolant is effectively reduced, and the loss caused by the fire is effectively reduced.

[0047] Preferably, if Figure 1 As shown, the battery pack group may include a plurality of battery packs 31 so as to increase the energy storage capacity of the storage chamber.

[0048] Preferably, each of the above-mentioned battery packs 31 can reach the IP67 protection level, so as to improve the waterproof and dustproof level of the battery pack 31, so as to effectively reduce the probability of the battery pack 31 being soaked in the coolant and damaged. It should be noted that the above-mentioned IP67 protection level refers to the protection safety level. Among them, IP is the abbreviation of Ingress Protection Rating. The technology that enables the battery pack 31 to reach the IP67 protection level is the existing technology in the field and will not be repeated here. In addition, the above-mentioned battery pack 31 reaching the IP67 protection level can be understood as the protection level of the shell of the above-mentioned battery pack 31 is at least IP67 level, and the protection level of the shell of the battery pack 31 can also be a higher level than IP67 protection (for example, IP68 level).

[0049] like Figure 1 The example in which the battery pack group includes five battery packs 31 is shown, but it is not limited thereto, and the number of battery packs 31 can be adaptively adjusted according to the size and storage capacity of the energy storage cabinet. Figure 1 As shown, the plurality of battery packs 31 may be stacked in the battery storage cavity along a first direction F1 to improve space utilization of the battery storage cavity.

[0050] like Figure 1 and Figure 2 As shown, F1 shown in the figure may be an example of the first direction. For the convenience of description, two mutually perpendicular directions on a plane perpendicular to the first direction F1 are defined as a second direction F2 and a third direction F3. F2 shown in the figure may be an example of the second direction, and F3 shown in the figure may be an example of the third direction. Preferably, when the energy storage cabinet is in use, the first direction F1 may be parallel to the gravity direction, and the plane determined by the second direction F2 and the third direction F3 may be parallel to the horizontal plane.

[0051] like Figure 1As shown, the storage chamber may also be provided with an electrical connection device, and the battery pack may be electrically connected to the electric control device via the electrical connection device, so as to realize the storage function of the battery pack. Optionally, the electrical connection device may include a high-voltage box 32 and a low-voltage device 33, and the electrical connection device may be arranged above the battery pack in the first direction F1, so that when the liquid injection device injects cooling liquid into the storage chamber, the above arrangement can effectively reduce the probability of the electrical connection devices such as the high-voltage box 32 and the low-voltage device 33 being immersed in liquid, thereby reducing the probability of the electrical connection devices being damaged by immersion.

[0052] In an embodiment, not shown in the figure, the battery pack 31 may include a sensing unit, a battery cell group and an aerosol injection unit, and the sensing unit is respectively connected to the battery cell group and the aerosol injection unit. The sensing unit may be arranged in the housing of the battery pack 31 for detecting the battery cell group. When the sensing unit detects that the battery cell group has reached the fire limit value, the aerosol injection unit sprays aerosols toward the battery cell group to realize the first-level fire protection arrangement of the energy storage cabinet, that is, when the sensing unit detects that the data of the battery cell group in the battery pack 31 has reached the fire limit value, the aerosol injection unit can spray aerosols toward the battery cell group to extinguish the fire in the battery pack 31.

[0053] Optionally, the above-mentioned sensing part can be a temperature acquisition chip and an electrical signal acquisition chip in the battery pack 31, so as to determine whether a fire occurs in the battery pack 31 through the current (or voltage) and temperature data of the battery cell. In other words, the above-mentioned fire limit value can be the temperature limit value of the battery cell group fire and / or the current (or voltage) limit value of the battery cell group fire.

[0054] It should be noted that the structure of the battery pack 31 for extinguishing fire by spraying aerosol is a prior art in the art (for example, Chinese patent document CN115566319A A battery box with improved fire extinguishing safety performance), which will not be described in detail here.

[0055] Preferably, in an embodiment, Figure 2 As shown, the energy storage cabinet may further include a fire extinguishing agent spraying unit that is communicatively connected to the detection device 5, and the fire extinguishing agent spraying unit is disposed on the top of the power storage chamber. When the detection device 5 detects a fire, the fire extinguishing agent spraying unit can spray the fire extinguishing agent toward the power storage chamber, thereby realizing the second-level fire protection arrangement of the energy storage cabinet, that is, when the detection device 5 detects a fire in the cabinet, the fire extinguishing agent spraying unit can spray the fire extinguishing agent into the cabinet to extinguish the open fire in the cabinet.

[0056] Preferably, if Figure 2 As shown, the detection device 5 can be arranged on the top of the power storage chamber to detect the fire in the power storage chamber. Optionally, the detection device 5 can be a fire detection sensor device such as a smoke alarm or a carbon monoxide detector.

[0057] Preferably, if Figure 2 As shown, the fire extinguishing agent spraying unit may include a fire extinguishing agent holding tank 41 and a nozzle 42 which are connected to each other. The nozzle 42 may be arranged directly above the battery pack group in the first direction F1 to facilitate fire extinguishing of the battery pack group. The fire extinguishing agent holding tank 41 may be arranged side by side with the electrical connecting device in the third direction F3. Thus, on the one hand, the space utilization rate of the electrical connecting device in the battery storage cavity is effectively improved; on the other hand, the fire extinguishing agent holding tank 41 is arranged above the battery pack group, which effectively reduces the kinetic energy required for the fire extinguishing agent spraying unit to spray the fire extinguishing agent.

[0058] Optionally, the fire extinguishing agent may be perfluorohexanone fire extinguishing agent, but is not limited thereto, and the fire extinguishing agent may also be other fire extinguishing agents suitable for circuit fires.

[0059] On the basis of the features described above, the energy storage cabinet provided by the present application realizes a three-level fire protection arrangement, wherein the first-level fire protection arrangement is the sensing part, the battery cell group and the aerosol spray part in the battery pack 31. When the sensing part detects that the data of the battery cell group in the battery pack 31 reaches the fire limit value, the aerosol spray part can spray aerosol to the battery cell group to extinguish the fire in the battery pack 31; the second-level fire protection arrangement is the fire extinguishing agent spraying part connected to the detection device 5 in communication. When the fire in the cabinet is detected by the detection device 5, the fire extinguishing agent spraying part can spray the fire extinguishing agent into the cabinet to extinguish the fire. Extinguish open flames in the cabinet. In this way, when the first-level fire protection arrangement fails to extinguish all fires, the energy storage cabinet can further extinguish the fire through the second-level fire protection arrangement; the third-level fire protection arrangement is a liquid injection device that is communicated with the detection device 5. When the detection device 5 detects a fire, the liquid injection device can inject coolant into the battery storage cavity, so that the battery pack in the battery storage cavity can be immersed in the coolant, so that the fire can be quickly extinguished and the heat generated by the fire can be quickly cooled by the coolant, effectively suppressing the heat diffusion caused by the fire, thereby ensuring the complete elimination of the fire.

[0060] In the embodiment, preferably, the cabinet body may include a partition 13, and the above-mentioned power storage chamber and the control chamber may be separated by the partition 13. Figure 1 and Figure 2 As shown, the partition 13 may be parallel to a plane defined by both the first direction F1 and the third direction F3, so that the storage chamber and the control chamber are arranged side by side along the second direction F2.

[0061] Preferably, if Figure 2 As shown, the partition 13 is provided with a plurality of quick-insertion parts 131 , and the electric control device is electrically connected to the battery pack via the quick-insertion parts 131 , so that, on the one hand, the electric connectivity between the electric control device and the battery pack is achieved; on the other hand, the sealing of the partition 13 is ensured.

[0062] Optionally, the quick-connect portion 131 may be a cable gland.

[0063] Preferably, not shown in the figure, the above-mentioned injection device may include a cooling liquid source, a liquid injection valve and a liquid injection interface 4, the above-mentioned cooling liquid source is connected to the above-mentioned electricity storage chamber via the liquid injection valve and the liquid injection interface 4 in sequence, and the above-mentioned detection device 5 is connected to the liquid injection valve to control the opening and closing of the liquid injection valve. Optionally, the above-mentioned cooling liquid source can be a container storing cooling liquid or a cooling liquid supply device.

[0064] Optionally, the coolant may be water, foam fire extinguishing agent or other liquid cooling fire extinguishing agent.

[0065] In an embodiment, preferably, Figures 1 to 3 As shown, the energy storage cabinet may further include a water cooling unit 21, a water outlet water path 211 and a water return water path 212. Each battery pack 31 includes a water cooling plate. The water cooling unit 21 is arranged in the control cavity. The water cooling unit 21 supplies liquid to the water cooling plate via the water outlet water path 211, and the water cooling plate returns water to the water cooling unit 21 via the water return water path 212. In this way, on the one hand, the water-cooling liquid can be circulated in sequence through the water cooling unit 21-water outlet circuit-water cooling plate-water return circuit-water cooling unit 21 (i.e., water cooling circulation circuit), thereby realizing the liquid cooling circulation of the battery pack group; on the other hand, the water cooling unit 21 is arranged in the control cavity, which effectively prevents the water cooling unit 21 from being immersed in the coolant when the coolant soaks the battery pack group, thereby reducing the probability of the water cooling unit 21 being damaged by being immersed in the coolant.

[0066] Preferably, if Figure 1 As shown, the water cooling plate may be disposed at the top and / or bottom of the battery pack 31 in the first direction F1 to facilitate cooling of the battery pack 31 .

[0067] Optionally, the water-cooling liquid may be water, refrigerant, etc.

[0068] Preferably, if Figure 1 and Figure 3 As shown, the water outlet circuit 211 may include a main water outlet circuit 2111 and multiple water outlet branches 2112. The main water outlet circuit 2111 is connected to the water cooling unit 21, and the water outlet branches 2112 are all connected to the main water outlet circuit 2111. Each battery pack 31 is connected to the water outlet circuit 211 via the water outlet branch circuit 2112. In this way, the water cooling plates of each battery pack 31 are connected in parallel, thereby effectively ensuring the mutual independence of the cooling liquid entering each battery pack 31 and reducing the mutual interference of heat among the battery packs 31.

[0069] Similarly, if Figure 1As shown, the above-mentioned return water circuit 212 may include a return water main circuit 2121 and multiple return water branches 2122. The return water main circuit 2121 is connected to the water cooling unit 21, and the return water branches 2122 are all connected to the return water main circuit 2121. Each battery pack 31 is connected to the return water circuit 212 via the return water branch 2122. In this way, the water cooling plates of each battery pack 31 are connected in parallel, thereby effectively ensuring the mutual independence of the cooling liquid flowing out of each battery pack 31, and reducing the mutual interference of heat among the battery packs 31.

[0070] Optionally, the water cooling plate may be provided with a water inlet interface and a water outlet interface, the water outlet branch 2112 is connected to the water inlet interface, and the water return branch 2122 is connected to the water outlet interface.

[0071] Optionally, the water outlet branch 2112 and the water inlet interface can be connected via a QC18 quick plug to achieve quick connection between the water outlet branch 2112 and the water inlet interface.

[0072] Optionally, the water return branch 2122 and the water outlet interface can be connected via a QC18 quick plug to achieve quick connection between the water return branch 2122 and the water outlet interface.

[0073] Optionally, the main water outlet path 2111 and the main water return path 2121 can be connected to the water cooling unit 21 via NW22 quick plugs respectively.

[0074] Preferably, if Figure 2 As shown, the partition 13 is provided with a through-tube hole penetrating the partition 13 along the second direction F2, and the main water outlet path 2111 and the main water return path 2121 both penetrate the partition 13 through the through-tube hole. The through-tube hole is provided at the upper end of the partition 13 in the first direction F1 to prevent the coolant from entering the control cavity through the through-tube hole. Furthermore, a sealing filler is also provided in the through-tube hole to block the gap between the through-tube hole and the main water outlet path 2111 and the main water return path 2121 to further prevent the coolant from entering the control cavity through the through-tube hole.

[0075] Preferably, if Figure 1 and Figure 2 As shown, the return water circuit 212 may further include an air relief valve 213. The air relief valve 213 may be disposed at the highest point of the return water main circuit 2121 to discharge the gas in the water cooling circulation circuit and ensure the safety of the water cooling circulation circuit.

[0076] Preferably, if Figure 1 and Figure 2 As shown, the water cooling unit 21 may be disposed at the upper end of the control chamber in the first direction F1 to shorten the length of the pipeline of the water cooling circulation loop.

[0077] Correspondingly, if Figure 1As shown, the electric control device can be arranged at the lower end of the control chamber in the first direction F1, that is, below the water cooling unit 21 in the first direction F1, so as to improve the space utilization of the control chamber. Optionally, the electric control device can include an energy storage converter 22.

[0078] Preferably, the control cavity can reach IP54 protection grade, thereby ensuring the waterproofness of the control cavity.

[0079] In an embodiment, Figure 1 , Figures 4 to 6 As shown, the cabinet body may further include a first cabinet door 11, which may be disposed in the control cavity to realize the opening and closing of the control cavity, thereby facilitating the installation and maintenance of equipment in the control cavity.

[0080] Preferably, if Figure 6 As shown, the first cabinet doors 11 are provided on both sides of the control chamber in the third direction F3, so as to further facilitate the installation and maintenance of the equipment in the control chamber.

[0081] Correspondingly, the cabinet body is provided with a first opening at a position corresponding to the first cabinet door 11, and the first cabinet door 11 can be hinged to the cabinet body. Preferably, the edge of the first opening can be coated with a U-shaped sealant to improve the sealing between the first cabinet door 11 and the cabinet body.

[0082] Preferably, if Figure 4 and Figure 5 As shown, the first cabinet door 11 may include a cabinet door body 111 , and the cabinet door body 111 may include a first door frame and a first skin, and the first skin is covered on the first door frame.

[0083] Preferably, if Figure 4 and Figure 5 As shown, a ventilation grille 1111 may be provided on the first skin to facilitate the control of ventilation and heat dissipation of the cavity.

[0084] Preferably, the ventilation grille 1111 includes a plurality of strip holes distributed in a matrix, which ensures the air intake of the ventilation grille 1111 while reducing the amount of debris entering the control cavity through the ventilation grille 1111.

[0085] Preferably, if Figure 4 and Figure 5 As shown, the first cabinet door 11 may also be provided with a louver 113 and an insect-proof net 112. The louver 113 is covered on the ventilation grille 1111, and the insect-proof net 112 may be laid between the first skin and the louver 113 to reduce the entry of debris into the control cavity through the ventilation grille 1111.

[0086] Preferably, if Figure 4 and Figure 5 As shown, the above-mentioned louver 113 may include a plurality of blades 1131 arranged in parallel. In the third direction F3, and in the direction from the inner side of the cabinet body to the outer side, the above-mentioned blades 1131 gradually tilt downward, so as to further reduce the entry of debris into the control cavity through the gaps between the blades 1131.

[0087] Preferably, the angle between the blade 1131 and the plane determined by the second direction F2 and the third direction F3 can be 30°~60° (for example, 35°, 40°, 45°, 50°, 55°, etc.). In this way, the air intake of the ventilation grille 1111 and the dust resistance of the first cabinet door 11 can be taken into account.

[0088] Preferably, the projections of two adjacent blades 1131 along the third direction F3 on the plane defined by the first direction F1 and the second direction F2 partially overlap, so as to further improve the dustproofness of the first cabinet door 11 .

[0089] Preferably, the size of the overlapping portion of the projections of the two adjacent blades 1131 in the first direction F1 may be 5 mm to 10 mm, so as to further improve the dustproofness of the first cabinet door 11 .

[0090] Alternatively, if Figure 5 As shown, the first cabinet door 11 may further include an air duct portion 114 , which is a pipe extending along a third direction F3 . The air duct portion 114 is framed on the outer side of the louver 113 to guide the airflow entering through the ventilation grille 1111 .

[0091] Alternatively, if Figure 5 As shown, the two ends of the air duct portion 114 in the third direction F3 may be respectively provided with a first sealing gasket 1132 and a second sealing gasket 1141, and the end of the louver 113 close to the first skin is provided with a connecting flange, and the louver 113 is fixed to the first skin via the connecting flange. The first sealing gasket 1132 is provided between the connecting flange and the air duct portion 114 to ensure the air tightness of the end of the air duct portion 114 close to the first skin. Similarly, the ends of the louver 113 and the air duct portion 114 away from the first skin are sealed via the second sealing gasket 1141.

[0092] In an embodiment, Figure 1 and Figure 6 As shown, the cabinet body may further include a second cabinet door 12, which may be disposed in the power storage cavity to realize the opening and closing of the power storage cavity, thereby facilitating the installation and maintenance of equipment in the power storage cavity.

[0093] Preferably, if Figure 6As shown, the second cabinet doors 12 are provided on both sides of the power storage chamber in the third direction F3, so as to further facilitate the installation and maintenance of the equipment in the power storage chamber.

[0094] Correspondingly, the cabinet body is provided with a second opening at a position corresponding to the second cabinet door 12, and the second cabinet door 12 can be hinged to the cabinet body. Preferably, the edge of the second opening can also be coated with a U-shaped sealant to improve the sealing between the second cabinet door 12 and the cabinet body.

[0095] Preferably, if Figure 6 As shown, the second cabinet door 12 may include a second door frame and a second skin, and the second skin is covered on the second door frame. Preferably, the second cabinet door 12 may be a sealed door, that is, the second skin is a non-porous structure to ensure the sealing of the power storage cavity to prevent the coolant in the power storage cavity from leaking out.

[0096] Preferably, if Figure 6 As shown, the above-mentioned liquid injection interface 4 can be arranged on the second skin to facilitate the maintenance of the liquid injection device.

[0097] Preferably, the cabinet body may further include a support frame 10 and a third skin, and the battery pack, the electronic control device, and the water cooling unit 21 are all fixed in the cabinet body via the support frame 10. The third skin is coated on the outside of the support frame 10 to surround and form the cabinet body.

[0098] Optionally, the support frame 10 may be made of Q355 high-strength structural steel to ensure the support strength of the cabinet body. Optionally, the surface of the support frame 10 may be spray-coated to ensure the corrosion resistance of the support frame 10.

[0099] Preferably, the first skin, the second skin and the third skin can be formed by integrally bending a stainless steel plate. Preferably, the first skin, the second skin and the third skin can be made of 304 stainless steel to improve the corrosion resistance of the cabinet body.

[0100] Preferably, the surfaces of the support frame 10, the first skin, the second skin and the third skin are first degreased, deslaged (i.e., removing welding slag, spatter, sharp edges, corners, etc.) and weld polished in accordance with the SPCCSPI requirements; then sandblasted, dried, degreased and deashed; finally, spraying or roller coating is used for coating to achieve C5 anti-corrosion grade, thereby improving the corrosion resistance of the cabinet body.

[0101] The embodiment of the second aspect of the present application further provides a power storage system, comprising the energy storage cabinet described in any of the above embodiments, and thus having all the beneficial technical effects of the energy storage cabinet, which will not be elaborated here.

[0102] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An energy storage cabinet, characterized in that: It includes a cabinet body, an electric control device, a battery pack, a detection device and a liquid injection device, wherein the cabinet body includes a power storage cavity and a control cavity sealed from each other, the electric control device is arranged in the control cavity, and the battery pack is arranged in the power storage cavity; The detection device is arranged in the cabinet body to detect the fire condition in the cabinet body; The liquid injection device is in communication with the power storage chamber, and the detection device is in communication connection with the liquid injection device, so that when the detection device detects a fire, the liquid injection device can inject cooling liquid into the power storage chamber; The battery pack group includes a plurality of battery packs; The battery pack includes a sensing unit, a battery cell group, and an aerosol ejection unit, wherein the sensing unit is respectively connected to the battery cell group and the aerosol ejection unit for communication; The sensing unit is disposed in the battery pack and is used to detect the battery cell group; When the sensing unit detects that the battery cell group reaches the ignition limit value, the aerosol spraying unit sprays aerosol toward the battery cell group; The sensing part is a temperature acquisition chip and an electrical signal acquisition chip in the battery pack; The cabinet body comprises a partition, and the power storage chamber and the control chamber are separated by the partition; The partition is provided with a plurality of quick-insertion parts, and the electric control device is electrically connected to the battery pack via the quick-insertion parts; It also includes a fire extinguishing agent spraying unit that is communicatively connected to the detection device, the fire extinguishing agent spraying unit is arranged on the top of the power storage chamber, and when the detection device detects a fire, the fire extinguishing agent spraying unit can spray the fire extinguishing agent toward the power storage chamber; it also includes a water cooling unit, a water outlet waterway and a water return waterway, and each of the battery packs includes a water cooling plate; The water cooling unit is arranged in the control chamber, the water cooling unit supplies liquid to the water cooling plate via the water outlet waterway, and the water cooling plate returns water to the water cooling unit via the water return waterway; The water outlet waterway includes a main water outlet road and a plurality of water outlet branches, the main water outlet road is connected to the water cooling unit, the water outlet branches are all connected to the main water outlet road, and each of the battery packs is connected to the water outlet waterway via the water outlet branches; The water return circuit includes a main water return circuit and a plurality of water return branches, the main water return circuit is connected to the water cooling unit, the water return branches are all connected to the main water return circuit, and each of the battery packs is connected to the water return circuit via the water return branches; The return water channel also includes an air release valve, which is arranged at the highest point of the return water main channel.

2. The energy storage cabinet according to claim 1, characterized in that: Each of the battery packs meets the IP67 protection grade.

3. The energy storage cabinet according to claim 1, characterized in that: The cabinet body further includes a first cabinet door and a second cabinet door, wherein the first cabinet door is disposed in the control cavity, and the second cabinet door is disposed in the power storage cavity.

4. The energy storage cabinet according to claim 3, characterized in that: The first cabinet door comprises a cabinet door body, an insect-proof net and a louver, the cabinet door body is provided with a ventilation grille, the louver cover is arranged on the ventilation grille, and the insect-proof net is laid between the cabinet door body and the louver; And / or, the second cabinet door is a sealed door, and the liquid injection device is arranged on the second cabinet door.

5. A power storage system, characterized in that: An energy storage cabinet comprising any one of claims 1 to 4.

Images