Energy storage cabinet and energy storage system

Abstract

The embodiment of the application provides a kind of energy storage cabinet and energy storage system, it is related to energy storage technical field.Energy storage cabinet includes battery cluster and energy storage converter, battery cluster includes multiple battery packs arranged in stack, and energy storage converter is used to carry out power conversion to the electric energy output by battery cluster;Energy storage converter and battery cluster are arranged along the height direction of energy storage cabinet;Energy storage converter includes shell and power device, and power device is arranged in shell;Multiple crossbeams are arranged between shell and battery cluster, and multiple crossbeams are arranged at intervals.By arranging multiple crossbeams between energy storage converter and battery cluster, the influence on surrounding battery pack when explosion occurs in energy storage converter is avoided or reduced.

Description

Technical Field

[0001] This application relates to the field of energy storage technology, and in particular to an energy storage cabinet and an energy storage system. Background Technology

[0002] The energy storage cabinet in the relevant technology has a built-in power converter, but no protective measures are set for the power converter; therefore, if the power converter explodes, it will affect and / or damage the battery pack around the power converter, and in severe cases, it may even cause the battery pack to explode. Summary of the Invention

[0003] This application provides an energy storage cabinet and an energy storage system. The purpose is to install a crossbeam between the power converter and the battery pack built into the energy storage cabinet to avoid or reduce the impact on the surrounding battery pack in the event of an explosion of the energy storage converter.

[0004] To achieve the above objectives, this application adopts the following technical solution: One aspect of this application provides an energy storage cabinet, which includes a battery cluster and an energy storage converter. The battery cluster includes multiple battery packs stacked together, and the energy storage converter is used to convert the electrical energy output by the battery cluster into power. The energy storage converter and the battery cluster are arranged along the height direction of the energy storage cabinet. The energy storage converter includes a housing and power devices, with the power devices disposed inside the housing. Multiple crossbeams are disposed between the housing and the battery cluster, and the multiple crossbeams are arranged at intervals.

[0005] This application incorporates multiple crossbeams between the energy storage converter and the battery cluster. On one hand, the crossbeams can effectively block debris generated by the explosion of the energy storage converter, thus avoiding or reducing the risk of damage to the battery cluster from flying debris. On the other hand, the crossbeams can prevent the energy storage converter from bulging and deforming due to the explosion, thereby preventing the bulging and deformed parts from hitting the battery cluster, causing displacement and / or damage to the battery cluster.

[0006] In addition, the arrangement of multiple crossbeams is beneficial for the heat dissipation of the energy storage converter.

[0007] In one optional embodiment, the energy storage cabinet includes one or more rows of battery packs and one or more rows of energy storage converters. Each row of battery packs includes at least one set of battery clusters, and each row of energy storage converters includes at least one energy storage converter. Each row of battery packs and one row of energy storage converters are corresponding and electrically connected, and each row of battery packs and the corresponding row of energy storage converters are distributed along the height direction of the energy storage cabinet. Each energy storage converter has an explosion vent on its side, and the explosion vent is covered with an explosion vent plate. Each row of energy storage converters has side plates on opposite sides along the height direction perpendicular to the energy storage cabinet, and the explosion vent of each energy storage converter is opposite to the side plate.

[0008] Each row of energy storage converters has a first side plate and a second side plate on each side. When an energy storage converter explodes, the first and second side plates can block the gas flow ejected from the vent, preventing most or even all of the gas flow from reaching adjacent rows of energy storage converters and thus avoiding impact on them. Furthermore, the plate-like structure of the first and second side plates can effectively withstand the impact of the explosive gas flow ejected from the vent.

[0009] When the energy storage converter between the first and second side plates explodes, the first and second side plates effectively block the debris generated by the explosion, preventing flying debris from damaging adjacent energy storage converters. Furthermore, the plate-like structure of the first and second side plates prevents flying debris from penetrating them. Additionally, the first and second side plates also effectively prevent the bulging deformation of the energy storage converter between them from affecting adjacent energy storage converters.

[0010] In one optional embodiment, heat dissipation holes are provided on the side plate to facilitate heat dissipation of the energy storage converter.

[0011] In one optional embodiment, the energy storage cabinet includes a partition and an AC busbar. The partition is located between the back of the energy storage converter and the AC busbar. Conductive bars are provided on the surface of the partition facing the energy storage converter. Ports are provided on the back of the energy storage converter, and the ports are plugged into the conductive bars. Multiple sets of conductive bars pass through the partition and are electrically connected to the AC busbar.

[0012] The baffle serves several purposes. First, it provides fixed support for the busbars. Second, it effectively blocks debris generated by the explosion from the energy storage converter, preventing it from damaging the AC busbars on the other side. Furthermore, its plate-like structure prevents debris from penetrating the baffle. Third, the baffle prevents the AC busbars on the other side from being affected by the bulging deformation of the energy storage converter caused by the explosion. For example, it prevents the bulging deformation from hitting the AC busbars, causing displacement and / or damage. Fourth, the baffle blocks the explosive gas flow from the vent and towards the baffle, confining it to the side of the baffle facing the energy storage converter, preventing or reducing the flow of explosive gas to the other side and thus avoiding impact on the AC busbars there. Finally, the plate-like structure of the baffle allows it to withstand the impact of the explosive gas flow relatively well.

[0013] In one alternative embodiment, a protective element is provided on the partition, and the protective element is arranged around the outer periphery of the conductive busbar.

[0014] The protective component serves to protect the conductor bus located within it. When the energy storage converter explodes, the protective component can protect the conductor bus. On the one hand, the protective component can prevent flying debris from the energy storage converter from damaging the conductor bus; on the other hand, the protective component can prevent the explosive gas flow from the vent and flowing to the protective component from impacting the conductor bus.

[0015] In one optional embodiment, the partition plate has a protrusion on its surface facing the energy storage converter, and the conductive bus is located in the protective space enclosed by the protrusion, with the protrusion forming a protective component.

[0016] In one optional embodiment, the side plates on both sides of any row of energy storage converters are respectively a first side plate and a second side plate, and both the first side plate and the second side plate are connected to a partition. Each row of battery packs is located above a corresponding row of energy storage converters, and the two ends of multiple crossbeams above each row of energy storage converters are respectively connected to the first side plate and the second side plate; or, each row of battery packs is located below a corresponding row of energy storage converters, and the two ends of multiple crossbeams below each row of energy storage converters are respectively connected to the first side plate and the second side plate.

[0017] The first side panel, the second side panel, the partition, and multiple crossbeams form a protective cover with a frame structure.

[0018] In one optional embodiment, the energy storage cabinet further includes a multi-row cluster control box, which is electrically connected to a multi-row energy storage converter in a one-to-one correspondence. Each cluster control box and a corresponding connected row of energy storage converters are arranged between the first side plate and the second side plate.

[0019] Each cluster control box in each column is electrically connected to one energy storage converter in the corresponding column, and the output of each cluster control box is electrically connected to the input of the corresponding energy storage converter; the output of each battery cluster in each column of battery pack is electrically connected to the input of one of the cluster control boxes in the corresponding column, and each cluster control box is used to control the on / off connection between the corresponding battery cluster and the corresponding energy storage converter.

[0020] Each row of energy storage converters and the corresponding cluster control box are integrated within a protective enclosure to form an integrated power conversion component. This can be understood as the energy storage cabinet comprising one or more power conversion components. Each power conversion component includes a protective enclosure, and within that enclosure, a row of energy storage converters and a row of cluster control boxes. Multiple power conversion components can be distributed along the length or width of the energy storage cabinet. This integration of power conversion components allows for the fulfillment of larger energy storage requirements within the limited volume of the energy storage cabinet.

[0021] In one example, the arrangement direction of each column of energy storage converters and the corresponding column of cluster control boxes is parallel to the width direction of the energy storage cabinet; in another example, the arrangement direction of each column of energy storage converters and the corresponding column of cluster control boxes is parallel to the length direction of the energy storage cabinet.

[0022] For example, the cabinet door of the energy storage cabinet is located on one side of the energy storage cabinet along the width direction of the energy storage cabinet, and the arrangement direction of each row of energy storage converters and the corresponding row of cluster control boxes is parallel to the width direction of the energy storage cabinet, which can reduce the space occupied by the energy storage converters and cluster control boxes on the front of the energy storage cabinet.

[0023] In one optional embodiment, the energy storage cabinet further includes a support member, on which the energy storage converter is mounted; guide rails are provided on both the first and second side plates, the guide rails extending along the arrangement direction of the energy storage converter and the partition, and the support member is slidably mounted on the guide rails so that the support member slides in or out between the first and second side plates along the guide rails, thereby facilitating the assembly of the energy storage converter with the first and second side plates.

[0024] Multiple crossbeams, the first side plate, the second side plate, the partition, and the support components can work together to suppress the bulging deformation of the energy storage converter.

[0025] In one optional embodiment, both the energy storage converter and the cluster control box are mounted on a support member. The support member, the energy storage converter, and the cluster control box are integrated into a single component. This component slides along a guide rail between the first and second side plates, facilitating the assembly of the energy storage converter, the cluster control box, and the first and second side plates. Furthermore, this design makes maintenance and operation of the installed energy storage cabinet, including the energy storage converter and the cluster control box, more convenient.

[0026] In one optional embodiment, a positioning piece is provided on the plate surface of at least one of the first side plate and the second side plate facing the energy storage converter; the positioning piece is close to the partition along the extension direction of the guide rail; at least one of the first side plate and the second side plate has a gap with the support member, and the positioning piece is disposed in the gap.

[0027] During assembly, at least one of the first and second side plates has a gap with the support member, which facilitates placing the support member on the guide rail. After the support member slides a certain distance along the guide rail, the positioning piece near the partition plate is positioned in the gap. At this point, the support member can be positioned appropriately in the distribution direction of the first and second side plates, thereby positioning the energy storage converter on the support member appropriately in the distribution direction of the first and second side plates, so that the port of the energy storage converter can be accurately connected to the busbar.

[0028] In one optional embodiment, at least one of the first side plate and the second side plate has a stop portion on its plate surface facing the energy storage converter; a mating portion is provided on the surface of the support member facing the energy storage converter, and the stop portion abuts against the mating portion; the contact surface of the stop portion and the mating portion is set at an acute angle to the extension direction of the guide rail, so that the contact surface of the stop portion and the mating portion is a slope.

[0029] Along the sliding direction of the support member, the stop is located in front of the sliding direction of the mating part, so as to abut against the mating part. Through the abutment and engagement of the stop and the mating part, the support member is limited in the sliding direction of the support member, so as to limit the support member in the final position and confirm that the support member has slid between the first side plate and the second side plate.

[0030] The inclined contact surface can, on the one hand, achieve a stop-fit ​​between the stop and the mating part in the extension direction of the guide rail, thereby limiting the support in the sliding direction of the support; on the other hand, it can also achieve an abutment fit between the stop and the mating part in the height direction of the energy storage cabinet, thereby ensuring that the support sliding between the first side plate and the second side plate is relatively stationary with respect to the guide rail in the height direction of the energy storage cabinet, so that the support is stably set on the guide rail.

[0031] In one optional embodiment, along the extension direction of the guide rail, at least one of the first and second side plates has multiple stop portions on its surface facing the energy storage converter, and the surface of the support member facing the energy storage converter has multiple mating portions, with each stop portion abutting against one mating portion. The distance between each stop portion and the surface of the support member facing the energy storage converter along the height direction of the energy storage cabinet is a first distance. Along the sliding direction of the support member, the first distance between the multiple stop portions on the same side plate gradually decreases. In this way, among the multiple stop portions on the same side plate, the remaining stop portions (except for the one closest to the rear end of the guide rail) can avoid interfering with the mating portions that do not correspond to the other stop portions, thereby avoiding interference with the sliding of the support member and allowing the support member to slide in smoothly.

[0032] In one optional embodiment, the energy storage cabinet further includes a limiting plate, which is detachably connected to a first side plate or a second side plate, and the limiting plate is detachably connected to one end of the support member away from the partition.

[0033] During assembly, before sliding the support component between the first and second side plates, first detach the limiting plate from either the first or second side plate, and also detach the limiting plate from the support component to prevent it from interfering with the insertion of the support component between the first and second side plates. After sliding the support component between the first and second side plates, connect and fix the limiting plate to the first or second side plate, and also connect and fix the limiting plate to one end of the support component facing away from the partition plate, thus connecting and fixing the support component to the first or second side plate via the limiting plate. Along the sliding direction of the support component, the connected limiting plate is located on the side of the support component facing away from the partition plate. The connected limiting plate can block the support component, preventing the assembled support component from slipping out between the first and second side plates.

[0034] In one optional embodiment, the support component includes a plurality of spaced-apart support beams, on which the energy storage converter is mounted. The arrangement of the support beams facilitates heat dissipation for the energy storage converter.

[0035] In one alternative implementation, both the cluster control box and the energy storage converter are mounted on a support beam. The support beam facilitates heat dissipation for both the cluster control box and the energy storage converter.

[0036] In one optional embodiment, the support member has support plates on both sides along the arrangement direction of the first side plate and the second side plate; each support beam is fixedly connected to two support plates at both ends; the support plates are provided with steps, and one surface of the multiple support beams is flush with the step surface of the steps.

[0037] This can be understood as follows: the energy storage converter can be installed on the surface of the supporting beam and the step, and the side of the step can limit the movement of the energy storage converter, preventing it from swaying along the arrangement direction of the first and second side plates. Similarly, the cluster control box can be installed on the surface of the supporting beam and the step, and the side of the step can limit the movement of the cluster control box, preventing it from swaying along the arrangement direction of the first and second side plates.

[0038] In one optional embodiment, the energy storage cabinet includes a plurality of first connecting beams, each of which is fixedly connected at both ends to a first side plate and a second side plate, respectively; the plurality of first connecting beams are located between the support member and the bottom wall of the energy storage cabinet.

[0039] The multiple first connecting beams are spaced apart, which is beneficial for heat dissipation of the energy storage converter and cluster control box.

[0040] Another aspect of this application provides an energy storage cabinet, which includes a battery cluster and an energy storage converter. The battery cluster includes multiple battery packs stacked together, and the energy storage converter is used to convert the electrical energy output by the battery cluster into power. The energy storage converter and the battery cluster are arranged along the height direction of the energy storage cabinet. The energy storage converter includes a housing and power devices. The power devices are disposed inside the housing. A protective plate is disposed between the housing and the battery cluster, and heat dissipation holes are provided on the protective plate.

[0041] This can be understood as replacing the aforementioned spaced-apart crossbeams with a protective plate having heat dissipation holes. The protective plate with heat dissipation holes has at least the same effect as the crossbeam structure; that is, it can both block debris generated by the energy storage converter during an explosion, avoiding or reducing the risk of damage to the battery clusters from flying debris, and also prevent the energy storage converter from bulging and deforming during an explosion, thus protecting the battery clusters. The heat dissipation holes on the protective plate can also dissipate heat from the energy storage converter. Therefore, an energy storage cabinet including a protective plate has at least the same effect as an energy storage cabinet including crossbeams.

[0042] In another aspect, this application provides an energy storage cabinet, which includes one or more rows of battery packs and one or more rows of energy storage converters. Each row of battery packs includes at least one set of battery clusters, and each row of energy storage converters includes at least one energy storage converter. Each row of battery packs and one row of energy storage converters are correspondingly connected and electrically connected. Each row of energy storage converters is used to perform power conversion on the electrical energy output from the corresponding row of battery packs. Each row of battery packs and the corresponding row of energy storage converters are distributed along the height direction of the energy storage cabinet. Each energy storage converter includes a housing and a power device, with the power device disposed within the housing. Each energy storage converter has an explosion vent on its side, which is covered with an explosion vent plate. Each row of energy storage converters has side plates on opposite sides along the height direction perpendicular to the energy storage cabinet, and the explosion vent of each energy storage converter is disposed opposite to the side plate.

[0043] Each row of energy storage converters has a first side plate and a second side plate on each side. When an energy storage converter explodes, the first and second side plates can block the gas flow ejected from the vent, preventing most or even all of the gas flow from reaching adjacent rows of energy storage converters and thus avoiding impact on them. Furthermore, the plate-like structure of the first and second side plates can effectively withstand the impact of the explosive gas flow ejected from the vent.

[0044] When the energy storage converter between the first and second side plates explodes, the first and second side plates effectively block the debris generated by the explosion, preventing flying debris from damaging adjacent energy storage converters. Furthermore, the plate-like structure of the first and second side plates prevents flying debris from penetrating them. Additionally, the first and second side plates also effectively prevent the bulging deformation of the energy storage converter between them from affecting adjacent energy storage converters.

[0045] In another aspect, this application provides an energy storage cabinet, which includes a battery cluster and an energy storage converter. The battery cluster includes multiple stacked battery packs, and the energy storage converter is used to convert the electrical energy output from the battery cluster into power. The energy storage converter and the battery cluster are arranged along the height direction of the energy storage cabinet. The energy storage cabinet includes a partition and an AC busbar. The partition is located between the back of the energy storage converter and the AC busbar. A conductive busbar is provided on the surface of the partition facing the energy storage converter, and a port is provided on the back of the energy storage converter. The port is plugged into the conductive busbar. The conductive busbar passes through the partition and is electrically connected to the AC busbar.

[0046] The baffle serves several purposes. First, it provides fixed support for the busbars. Second, it effectively blocks debris generated by the explosion from the energy storage converter, preventing it from damaging the AC busbars on the other side. Furthermore, its plate-like structure prevents debris from penetrating the baffle. Third, the baffle prevents the AC busbars on the other side from being affected by the bulging deformation of the energy storage converter caused by the explosion. For example, it prevents the bulging deformation from hitting the AC busbars, causing displacement and / or damage. Fourth, the baffle blocks the explosive gas flow from the vent and towards the baffle, confining it to the side of the baffle facing the energy storage converter, preventing or reducing the flow of explosive gas to the other side and thus avoiding impact on the AC busbars there. Finally, the plate-like structure of the baffle allows it to withstand the impact of the explosive gas flow relatively well.

[0047] Another aspect of this application provides an energy storage system, which includes a prefabricated substation and the aforementioned energy storage cabinet. One end of the AC busbar of the energy storage cabinet extends outside the cabinet to connect with the low-voltage interface of the prefabricated substation. The prefabricated substation is used to boost the voltage of the electrical energy received by the low-voltage interface.

[0048] In the energy storage cabinet, the output terminal of the energy storage converter is electrically connected to the AC busbar, meaning the energy storage converter is connected to the low-voltage interface of the prefabricated substation via the AC busbar. Therefore, the voltage of the AC power output from the energy storage converter can be increased through the prefabricated substation to match the voltage level of the power grid. Since the energy storage system includes the aforementioned energy storage cabinet, it possesses at least the same technical effects as the energy storage cabinet.

[0049] In one optional embodiment, the energy storage system includes multiple energy storage cabinets, which are arranged at intervals along their length. In any two adjacent energy storage cabinets, one energy storage cabinet has a first opening on its side wall facing the other energy storage cabinet. One end of the AC busbar of one energy storage cabinet extends out of the first opening to be connected in series with the AC busbar of the other energy storage cabinet. The AC busbar of the energy storage cabinet at the end of the series path of the multiple energy storage cabinets is used to connect to the low-voltage interface of the prefabricated substation.

[0050] Multiple energy storage cabinets are connected in series and then connected to the low-voltage interface of the prefabricated substation. The prefabricated substation can increase the voltage of the AC power output from the multiple series-connected energy storage cabinets before outputting it. Attached Figure Description

[0051] Figure 1 This is a schematic diagram of the structure of an energy storage system provided in an embodiment of this application; Figure 2 This is a schematic diagram of another energy storage system provided in an embodiment of this application; Figure 3 This is a schematic diagram of the energy storage cabinet provided in one embodiment of this application. Figure 4 This is a schematic diagram of another energy storage system provided in the embodiments of this application; Figure 5 This is a schematic diagram of the battery cluster, energy storage converter, crossbeam and a side plate of the energy storage cabinet provided in the embodiments of this application; Figure 6 This is a schematic diagram of the arrangement structure of the battery cluster, energy storage converter, cluster control box, crossbeam, two side plates and partition of the energy storage cabinet provided in the embodiments of this application; Figure 7 This is a schematic diagram of the energy storage converter provided in the embodiments of this application from one perspective; Figure 8 yes Figure 7 Another structural schematic diagram of the energy storage converter in the diagram; Figure 9 This is a schematic diagram of the structure of the partition and the conductive busbar disposed thereon provided in the embodiments of this application; Figure 10 This is a schematic diagram of the structure of the partition provided in the embodiment of this application; Figure 11 This is a schematic diagram of the structure of the first structural component provided in the embodiments of this application; Figure 12 This is a schematic diagram of the structure of the second structural component provided in the embodiments of this application; Figure 13This is a schematic diagram of the structure of the third structural component provided in the embodiments of this application; Figure 14 This is a schematic diagram of the connecting bar and partition provided in an embodiment of this application; Figure 15 This is a schematic diagram of the structure of the power conversion component provided in an embodiment of this application from one perspective; Figure 16 This is a schematic diagram of the structure of a support member provided in an embodiment of this application; Figure 17 This is a schematic diagram of the structure of the first component provided in an embodiment of this application; Figure 18 This is a schematic diagram of the structure of the L-shaped plate provided in the embodiment of this application; Figure 19 This is a schematic diagram of the structure of a protective cover provided in an embodiment of this application from one perspective; Figure 20 yes Figure 19 Another structural diagram of the protective shield in the image; Figure 21 This is a schematic diagram of the power conversion component provided in an embodiment of this application from another perspective; Figure 22 This is a schematic diagram of the structure of the positioning piece provided in the embodiments of this application; Figure 23 This is a schematic diagram of the structure of the stop and the mating part provided in the embodiment of this application before they have come into contact; Figure 24 This is a schematic diagram of the structure when the stop and the mating part abut against each other, as provided in the embodiments of this application; Figure 25 This is a schematic diagram illustrating the arrangement of multiple stop portions of a stop component in a stop unit provided in an embodiment of this application; Figure 26 This is a schematic diagram of the structure provided in the embodiment of this application, showing the stop portion fixed on the fixing portion on the first side plate or the second side plate; Figure 27 This is a schematic diagram of the energy storage cabinet provided in an embodiment of this application from another perspective; Figure 28 This is a schematic diagram of the power conversion components and AC busbar of the energy storage cabinet provided in the embodiments of this application; Figure 29 This is another structural schematic diagram of the power conversion component of the energy storage cabinet provided in the embodiments of this application.

[0052] Figure label: 100-Energy Storage System; 10-Energy storage converter; 11-Explosion relief diaphragm; 12-Port; 13-Housing; 20-Protective cover; 201-Mounting port; 21-Partition; 211-Protrusion; 2111-First protrusion; 2112-Second protrusion; 2113-Third protrusion; 2114-Fourth protrusion; 212-Protective space; 213-First structural component; 214-Second structural component; 215-Third structural component; 216-Second opening; 217-Third opening; 218-Connecting plate; 22-First side plate; 23-Second side plate; 231-Fixing part; 24-Guide rail; 241-L-shaped plate; 2411-First plate; 2412-Second plate; 25-Positioning piece; 251-First guide slope; 252-Second guide slope; 26-Stop part; 261-First stop part; 262-Second stop part; 27-Heat dissipation hole; 28-Crossbeam; 281-Protective plate; 282-First heat dissipation hole; 29-First connecting beam; 30-cluster control box; 40 - Conductive busbar; 41 - Connecting busbar; 411 - First busbar segment; 412 - Second busbar segment; 50-Supporting component; 51-Supporting beam; 52-Supporting plate; 521-Step; 5211-Step surface; 5212-Step side; 53-Matching part; 54-Second connecting beam; 55-Limiting strip; 60-Limit plate; 70 - Power supply assembly; 71 - Power conversion assembly; 72 - First assembly; 80-Energy storage cabinet; 801-Energy storage cabinet output terminal; 802-Cabinet body; 803-First opening; 804-Cabinet door; 81-AC busbar; 811-Metal busbar; 82-Battery pack; 83-Vertical rod; 90 - Prefabricated substation; 901 - Low-voltage interface. Detailed Implementation

[0053] The technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0054] In this application, unless otherwise expressly specified and limited, the terms "upper", "lower", "front", "back", "left", "right", etc., indicating orientation or positional relationship may be defined relative to the orientation of the components schematically placed in the accompanying drawings. These directional terms may be relative concepts, used for relative description and clarification, and may change accordingly depending on the orientation of the components in the accompanying drawings. They should not be construed as limitations on this application.

[0055] In this application, the terms "first," "second," etc., are used for descriptive purposes only to distinguish one element from another, and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature.

[0056] In this application, unless otherwise expressly stated and limited, "multiple" means two or more.

[0057] Furthermore, in this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or illustration. Any embodiment or design described as "exemplary" or "for example" in this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0058] Modern society is filled with a vast array of devices that rely on electricity, from small household appliances to large data centers and factory production lines. Electricity supply is a crucial factor in maintaining the normal operation of modern society, leading to the rapid development and widespread application of energy storage cabinets. Energy storage cabinets can be commercial, residential, or used as power supply cabinets in data centers. They are used to store electrical energy and supply power to equipment that requires electricity. Energy storage cabinets can be applied in areas such as site energy, photovoltaics, residential energy storage, industrial and commercial energy storage, and large-scale ground-mounted power plant energy storage.

[0059] When an energy storage cabinet is connected to the grid, the DC power in the battery pack is usually first converted to AC power by a power converter. Then, it is connected to a prefabricated substation or transformer. The prefabricated substation or transformer increases or decreases the voltage of the AC power output from the power converter to match the voltage level of the power grid, thus achieving efficient power transmission. Finally, it is connected to the power grid through the prefabricated substation or transformer, for example, through a high-voltage cable, to transmit the stepped-up or stepped-down AC power to the power grid, thus achieving grid connection between the energy storage cabinet and the power grid.

[0060] An energy storage system is a combination of energy storage cabinets, power converters, and prefabricated substations or transformers. The number of energy storage cabinets, power converters, and prefabricated substations or transformers can be matched according to requirements.

[0061] In related technologies, the energy storage cabinet and the power converter are connected by cables, and the power converter is connected to the prefabricated substation or transformer by cables. Since exposed cables are prone to damage and aging, and occupy a lot of space, the cables usually need to be buried underground. This requires digging pits and burying the cables, which makes the connection between the cables and the energy storage cabinet, and between the power converter and the prefabricated substation or transformer difficult, time-consuming, and costly.

[0062] To reduce the assembly difficulty between battery clusters and power converters in energy storage systems, some energy storage systems integrate the power converter within the energy storage cabinet, meaning the energy storage cabinet includes the power converter. For energy storage cabinets with built-in power converters, the power converter and battery clusters are connected via cables installed within the cabinet. Since the power converter is located inside the cabinet, no external cables are needed, eliminating the need to bury the cables connecting the battery clusters and the power converter underground. This effectively reduces assembly difficulty, assembly time, and assembly costs.

[0063] For example Figure 1 The energy storage system 100 shown includes an energy storage cabinet 80 and a prefabricated substation 90. The energy storage cabinet 80 includes a cabinet 802 and a power conversion system (PCS) 10 installed inside the cabinet 802. The power conversion system 10 is a power converter. For example, the energy storage cabinet 80 includes multiple power conversion systems 10 installed inside the cabinet 802. The power conversion systems 10 inside the energy storage cabinet 80 are electrically connected to the prefabricated substation 90.

[0064] The energy storage cabinet 80 has an output terminal 801 on its cabinet 802. The output terminal 801 is the output terminal of the energy storage cabinet 80, and it can be an AC output terminal. For example, the output terminal of the energy storage cabinet 80 has three cables representing three-phase electricity. The energy storage converter 10 is electrically connected to the output terminal 801, that is, the output terminal of the energy storage converter 10 is electrically connected to the output terminal 801 of the energy storage cabinet. The output terminal 801 of the energy storage cabinet is electrically connected to the substation 90, that is, the output terminal 801 of the energy storage cabinet is electrically connected to the input terminal of the substation 90. The output terminal of the energy storage converter 10 is electrically connected to the substation 90 through the output terminal 801 of the energy storage cabinet. For example, the input terminal of the substation 90 is a low-voltage interface 901, and the output terminal 801 of the energy storage cabinet is electrically connected to the low-voltage interface 901 of the substation 90.

[0065] In some examples, the energy storage cabinet output terminal 801 is located on the side wall of the cabinet 802.

[0066] In some examples, the energy storage cabinet 80 is provided with multiple energy storage cabinet output terminals 801, and multiple energy storage converters 10 inside the energy storage cabinet 80 are connected to the multiple energy storage cabinet output terminals 801 in a one-to-one correspondence.

[0067] In some examples, the energy storage cabinet 80 has multiple energy storage cabinet output terminals 801, and the prefabricated substation 90 has multiple input terminals, with each energy storage cabinet output terminal 801 correspondingly connected to one input terminal of the prefabricated substation 90. For example, each energy storage cabinet output terminal 801 is connected to one input terminal of the prefabricated substation 90 via a cable.

[0068] Figure 1 The prefabricated substation 90 is connected to two energy storage cabinets 80. The output terminals of both energy storage cabinets 80 face the prefabricated substation 90, which is positioned between the two energy storage cabinets 80. Input terminals are located on both sides of the prefabricated substation 90 facing the two energy storage cabinets 80 to reduce the distance between the output terminals of the energy storage cabinets 80 and the input terminals of the prefabricated substation 90, thereby reducing the length of the cables used to connect the output terminals of the energy storage cabinets 80 and the input terminals of the prefabricated substation 90. For example, each side of the prefabricated substation 90 facing the two energy storage cabinets 80 may have multiple input terminals.

[0069] Figure 2 The energy storage system 100 shown includes multiple energy storage cabinets 80 and a prefabricated substation 90 connected to the multiple energy storage cabinets 80. Each energy storage cabinet 80 houses multiple energy storage converters 10 and an AC busbar 81 connected to the multiple energy storage converters 10, enabling parallel operation of the multiple energy storage converters 10. The multiple energy storage converters 10 of the energy storage cabinet 80 are connected to the input terminal of the prefabricated substation 90 via the AC busbar 81. For example, the output terminal of the energy storage converter 10 is electrically connected to the AC busbar 81. Alternatively, the AC busbar 81 is electrically connected to the output terminal of the energy storage cabinet 80, and the AC busbar 81 is electrically connected to the prefabricated substation 90 through the output terminal of the energy storage cabinet 80; or, the output terminal of the energy storage cabinet 80 is constituted by a portion of the AC busbar 81, which can be understood as the AC busbar 81 being directly electrically connected to the prefabricated substation 90.

[0070] In the example where the AC busbar 81 is directly connected to the prefabricated substation 90, one end of the AC busbar 81 extends out of the energy storage cabinet 80 to be connected to the prefabricated substation 90. It can be understood that the end of the AC busbar 81 that extends out of the energy storage cabinet 80 and is connected to the prefabricated substation 90 is equivalent to the output end of the energy storage cabinet 80.

[0071] Figure 2 In the energy storage system 100, since the multiple energy storage converters 10 of the energy storage cabinet 80 are first connected to the AC busbar 81, and then connected to the prefabricated substation 90 through the AC busbar 81, therefore Figure 2 The energy storage cabinet in the middle does not need to be installed as follows: Figure 1 The multiple energy storage cabinet output terminals 801 shown are, in other words, Figure 2When the number of energy storage converters 10 is large, the number of output terminals of the energy storage cabinet 80 can be significantly reduced to less than the number of energy storage converters 10. For example, the connection to the prefabricated substation 90 can be achieved through an output terminal interface of the energy storage cabinet 80, thereby reducing the space occupation of the output terminals of the energy storage cabinet 80 and increasing the energy density of the energy storage cabinet 80. Furthermore, because Figure 2 The number of output terminals of the energy storage cabinet 80 is reduced, which in turn reduces the number of input terminals of the prefabricated substation 90 and reduces the space ratio of the input terminals of the prefabricated substation 90.

[0072] like Figure 3 The energy storage cabinet 80 shown can have a first opening 803 provided on the side wall of the cabinet body 802. One end of the AC busbar 81 extends out of the energy storage cabinet 80 through the first opening 803, that is, one end of the AC busbar 81 is exposed outside the cabinet body 802 through the first opening 803, so that the end of the AC busbar 81 extending out of the energy storage cabinet 80 can be connected to the prefabricated substation 90.

[0073] The energy storage system 100 of this application embodiment may include a prefabricated substation 90 and one or more energy storage units. The prefabricated substation 90 has one or more input terminals, and each energy storage unit corresponds to one input terminal of the prefabricated substation 90. That is, multiple energy storage units correspond one-to-one with multiple input terminals of the prefabricated substation 90, and multiple energy storage units are connected in parallel. Each energy storage unit includes one or more energy storage cabinets 80.

[0074] In an example where the energy storage unit includes an energy storage cabinet 80, one end of the AC busbar 81 of the energy storage cabinet 80 extends outside the energy storage cabinet 80 to be electrically connected to the corresponding input terminal of the prefabricated substation 90. For example, a first opening 803 is provided on the side wall of the energy storage cabinet 80 facing the prefabricated substation 90, and one end of the AC busbar 81 of the energy storage cabinet 80 extends outside the energy storage cabinet 80 through the first opening 803 to be electrically connected to the corresponding input terminal of the prefabricated substation 90; wherein, the side wall where the first opening 803 is located can be one of two side walls of the energy storage cabinet 80 distributed along its length. Figure 2 The energy storage system 100 includes four energy storage units, each of which includes an energy storage cabinet 80, and the prefabricated substation 90 has four input terminals.

[0075] In an example where the energy storage unit includes multiple energy storage cabinets 80, the multiple energy storage cabinets 80 are connected in sequence. In any two adjacent energy storage cabinets 80, the second end of the AC busbar 81 of one energy storage cabinet 80 extends out of the energy storage cabinet 80 to be electrically connected to the first end of the AC busbar 81 of the other energy storage cabinet 80. That is, the multiple energy storage cabinets 80 are connected in series, and the AC busbars 81 of the multiple energy storage cabinets 80 are connected in series. The energy storage cabinet 80 located at the end of the multiple energy storage cabinets 80 refers to the energy storage cabinet 80 located at the end of the series path of the multiple energy storage cabinets 80. The second end of the AC busbar 81 of the energy storage cabinet 80 located at the end of the multiple energy storage cabinets 80 extends out of the energy storage cabinet 80 to be electrically connected to the corresponding input terminal of the prefabricated substation 90. For example, a first opening 803 is provided on one side wall of the energy storage cabinet 80, and the second end of the AC busbar 81 of the energy storage cabinet 80 extends out of the energy storage cabinet 80 through the first opening 803; or, for another example, a fourth opening is provided on the other side wall of the energy storage cabinet 80, and in any two adjacent energy storage cabinets 80, the second end of the AC busbar 81 of one energy storage cabinet 80 extends out of the energy storage cabinet 80 through the first opening 803, and is then electrically connected to the first end of the AC busbar 81 of the other energy storage cabinet 80 through the fourth opening of the other energy storage cabinet 80; wherein, the side wall where the first opening 803 is located and the side wall where the fourth opening is located of the energy storage cabinet 80 are arranged opposite each other; the side wall where the first opening 803 is located and the side wall where the fourth opening is located of the energy storage cabinet 80 can be two side walls distributed along the length direction of the energy storage cabinet 80; the arrangement direction of the multiple energy storage cabinets 80 of the energy storage unit can be parallel or the same as the length direction of each energy storage cabinet 80, that is, the multiple energy storage cabinets 80 of the energy storage unit are arranged at intervals along the length direction of the energy storage cabinet 80. Figure 4 The energy storage system 100 includes four energy storage units, each of which includes two energy storage cabinets 80, and the prefabricated substation 90 has four input terminals.

[0076] The input terminal of the prefabricated substation 90 can be a low-voltage interface 901, and the prefabricated substation 90 can boost the voltage of the electrical energy received by its low-voltage interface 901. In an example where the energy storage unit includes multiple energy storage cabinets 80, the prefabricated substation 90 can boost the voltage of the AC power output from the multiple energy storage cabinets 80 connected in series in the energy storage unit before outputting it.

[0077] The energy storage cabinet 80 provided in this application embodiment also includes a battery cluster, that is, the energy storage cabinet 80 further includes a battery cluster. The energy storage converter 10 in the energy storage cabinet 80 is used to perform power conversion on the electrical energy output from the battery cluster. The battery cluster includes multiple battery packs 82, and the energy storage converter 10 is used to perform power conversion on the electrical energy output from the battery packs 82. In some examples of energy storage cabinets 80, the energy storage cabinet 80 has one or more rows of battery packs, and each row of battery packs includes multiple battery packs 82 stacked along the height direction of the energy storage cabinet 80. A row of battery packs can be a battery cluster, and the multiple battery packs 82 in the row of a battery cluster are connected in series. That is, in this case, the battery cluster includes multiple battery packs 82 stacked along the height direction of the energy storage cabinet 80. A row of battery packs can also include multiple battery clusters, and the multiple battery packs 82 in each battery cluster are connected in series. The multiple battery packs 82 in each battery cluster can be stacked sequentially along the height direction of the energy storage cabinet 80. A battery cluster can also include multiple rows of battery packs, that is, multiple rows of battery packs connected in series to form a battery cluster.

[0078] It is understandable that a battery cluster refers to a collection of multiple battery packs that are electrically connected. Typically, a battery cluster includes multiple battery packs connected in series.

[0079] In some examples of energy storage cabinets 80, one or more battery clusters are included; one energy storage converter 10 can be connected to one battery cluster, that is, the input terminal of one energy storage converter 10 is connected to the total output terminal of one battery cluster; one energy storage converter 10 can also be connected to multiple battery clusters, that is, the input terminal of one energy storage converter 10 is connected to the total output terminal of multiple battery clusters. At least one energy storage converter 10 is provided inside the energy storage cabinet 80.

[0080] In some examples of energy storage cabinets 80, the energy storage cabinet 80 may also include a cluster control box; both the energy storage converter 10 and the battery clusters are electrically connected to the cluster control box, that is, the output terminal of the battery clusters is electrically connected to the input terminal of the cluster control box, the output terminal of the cluster control box is electrically connected to the input terminal of the energy storage converter 10, and the output terminal of the battery clusters is electrically connected to the input terminal of the energy storage converter 10 through the cluster control box. The cluster control box is used to control the connection and disconnection between the battery clusters and the energy storage converter 10; for example, the cluster control box is equipped with a power distribution device for disconnecting the path between the battery clusters and the energy storage converter 10.

[0081] In some examples, a cluster control box is connected to a corresponding energy storage converter 10, that is, the output of a cluster control box is connected to the input of an energy storage converter 10.

[0082] In some examples, a cluster control box can be connected to one battery cluster, meaning the input of one cluster control box is connected to the total output of one battery cluster; a cluster control box can also be connected to multiple battery clusters, meaning the input of one cluster control box is connected to the total output of multiple battery clusters. At least one cluster control box is installed inside the energy storage cabinet 80.

[0083] In some examples of energy storage cabinets 80, the energy storage cabinet 80 includes battery clusters and an energy storage converter 10; such as Figure 5 As shown, the battery cluster includes multiple battery packs 82 stacked together, for example, the multiple battery packs 82 of the battery cluster are stacked along the height direction of the energy storage cabinet 80; the energy storage converter 10 is used to perform power conversion on the electrical energy output by the battery cluster; the energy storage converter 10 and the battery cluster are arranged along the height direction of the energy storage cabinet 80, for example, the battery cluster can be located above or below the energy storage converter 10.

[0084] The energy storage converter 10 includes a housing 13 and power devices, with the power devices disposed within the housing 13. A plurality of crossbeams 28 are disposed between the housing 13 and the battery cluster, and the plurality of crossbeams 28 are arranged at intervals. For example, the plurality of crossbeams 28 can be arranged at intervals along the width direction of the energy storage cabinet 80 or at intervals along the length direction of the energy storage cabinet 80.

[0085] The width of the energy storage cabinet 80 is parallel to the X-axis, the length of the energy storage cabinet 80 is parallel to the Y-axis, and the height of the energy storage cabinet 80 is parallel to the Z-axis.

[0086] Hydrogen gas is released when the internal components of the energy storage converter 10 fail. The internal components of the energy storage converter 10 include power devices. When the hydrogen gas inside the energy storage converter 10 reaches a certain concentration and is under high temperature conditions, an explosion will occur. The temperature of the energy storage converter 10 will rise when it is operating. The explosion of the energy storage converter 10 is also called a hydrogen explosion.

[0087] Without the crossbeam 28, when the energy storage converter 10 explodes, on the one hand, the fragments generated by the explosion of the energy storage converter 10 will fly onto the battery pack 82, which may damage the battery pack 82 or even cause the battery pack 82 to explode as well; on the other hand, when the energy storage converter 10 explodes, it may bulge and deform, which may affect the battery cluster. For example, the bulge and deformed part may push against the battery cluster, causing the battery cluster to shift and / or damage it.

[0088] In this embodiment, multiple crossbeams 28 are provided between the energy storage converter 10 and the battery cluster. On the one hand, the crossbeams 28 can block the fragments generated by the explosion of the energy storage converter 10, thereby avoiding or reducing the risk of the flying fragments damaging the battery cluster. On the other hand, the crossbeams 28 can prevent the energy storage converter 10 from bulging and deforming and affecting the battery cluster.

[0089] In addition, the arrangement of multiple crossbeams 28 is beneficial for the heat dissipation of the energy storage converter 10.

[0090] For example, beam 28 is a high-strength square tube structure.

[0091] In some examples of energy storage cabinets 80, the energy storage cabinet 80 includes one or more rows of battery packs and one or more rows of energy storage converters, with multiple battery packs in each row of battery packs stacked along the height direction of the energy storage cabinet 80; each row of battery packs includes at least one set of battery clusters, and each set of battery clusters includes multiple stacked battery packs 82; each row of energy storage converters includes one or more energy storage converters 10, with multiple energy storage converters 10 in each row of energy storage converters distributed along the height direction of the energy storage cabinet 80.

[0092] Each row of battery packs corresponds to one row of energy storage converters, and each row of battery packs is electrically connected to its corresponding row of energy storage converters.

[0093] When the energy storage cabinet 80 includes a row of battery packs and a row of energy storage converters, the row of battery packs and the row of energy storage converters are distributed along the height direction of the energy storage cabinet 80. For example, the row of battery packs is located above or below the row of energy storage converters. Each battery cluster of the row of battery packs is electrically connected to one of the energy storage converters 10 of the row of energy storage converters. Each energy storage converter 10 is used to perform power conversion on the electrical energy output by the corresponding battery cluster, that is, the input terminal of each energy storage converter 10 is electrically connected to the output terminal of the corresponding battery cluster.

[0094] When the energy storage cabinet 80 includes multiple rows of battery packs and multiple rows of energy storage converters, the multiple rows of battery packs and multiple rows of energy storage converters are electrically connected in a one-to-one correspondence. This can be understood as the multiple rows of battery packs and multiple rows of energy storage converters being one-to-one. Each row of battery packs and the corresponding row of energy storage converters are distributed along the height direction of the energy storage cabinet 80. For example, each row of battery packs is located above or below the corresponding row of energy storage converters. Each group of battery clusters in each row of battery packs is electrically connected to one of the energy storage converters 10 in the corresponding row of energy storage converters. Each energy storage converter 10 is used to perform power conversion on the electrical energy output by the corresponding battery cluster of the corresponding row of battery packs. That is, the input terminal of each energy storage converter 10 is electrically connected to the output terminal of the corresponding battery cluster of the corresponding row of battery packs.

[0095] Multiple crossbeams 28 are spaced apart between each row of battery packs and the corresponding row of energy storage converters.

[0096] Each energy storage converter 10 has a vent on its side of the housing 13, and the vent is covered with a vent plate 11. When the energy storage converter 10 explodes, the pressure wave inside the energy storage converter 10 pushes open the vent plate 11 to open the vent, thereby releasing the pressure wave and energy generated by the explosion and reducing the risk of structural damage.

[0097] In the energy storage cabinet 80, the arrangement direction of the multi-row energy storage converters is the same as the arrangement direction of the multi-row battery packs; for example, the multi-row energy storage converters and the multi-row battery packs are distributed along the length direction of the energy storage cabinet 80, or they can be distributed along the width direction of the energy storage cabinet 80.

[0098] In the energy storage cabinet 80, each row of energy storage converters has side plates on opposite sides along the direction perpendicular to the height of the energy storage cabinet 80. For example, each row of energy storage converters has side plates on opposite sides along the length of the energy storage cabinet 80, or each row of energy storage converters has side plates on opposite sides along the width of the energy storage cabinet 80. In an example where the energy storage cabinet 80 includes multiple rows of energy storage converters, each row of energy storage converters has side plates on opposite sides along the distribution direction of the multiple rows of energy storage converters. Figure 6 As shown, the side plates on both sides of each energy storage converter are the first side plate 22 and the second side plate 23, respectively.

[0099] In an example where the energy storage converter 10 has an explosion vent on only one side, the explosion vent of the energy storage converter 10 is positioned opposite to one of the two side plates on both sides of the energy storage converter 10. That is, the explosion vent of the energy storage converter 10 is positioned opposite to the first side plate 22 on one side or the second side plate 23 on the other side of the energy storage converter 10. In other words, the explosion vent of the energy storage converter 10 is positioned facing the first side plate 22 or the second side plate 23.

[0100] like Figure 7 and Figure 8 The energy storage converter 10 shown has explosion vents on both sides, and each explosion vent is covered with an explosion vent plate 11. The explosion vents on both sides of the energy storage converter 10 are respectively arranged opposite to the first side plate 22 and the second side plate 23, that is, the explosion vents on both sides of the energy storage converter 10 are respectively arranged facing the first side plate 22 and the second side plate 23. The two explosion vents of the energy storage converter 10 can be distributed along the length direction of the energy storage cabinet 80 or along the width direction of the energy storage cabinet 80.

[0101] When the energy storage converter 10 explodes, the arrangement of the first side plate 22 and the second side plate 23 can block the airflow ejected from the explosion vent, thereby blocking most or even all of the airflow ejected from the explosion vent between the first side plate 22 and the second side plate 23. This prevents or reduces the flow of the explosive airflow to adjacent rows of energy storage converters, thus avoiding impact and influence on them. Furthermore, the plate-like structure of the first side plate 22 and the second side plate 23 can effectively withstand the impact of the explosive airflow ejected from the explosion vent.

[0102] Without the first side plate 22 and the second side plate 23, when the energy storage converter 10 explodes, on the one hand, the fragments generated by the explosion of the energy storage converter 10 will fly to the energy storage converters in adjacent columns. The flying fragments may damage the energy storage converters in adjacent columns, or even cause the energy storage converters in adjacent columns to explode as well. On the other hand, when the energy storage converter 10 explodes, it may bulge and deform. The bulge and deformed part of the energy storage converter 10 may affect the energy storage converters in adjacent columns. For example, the bulge and deformed part may push against the energy storage converters in adjacent columns, causing displacement of the energy storage converters in adjacent columns and / or damaging the energy storage converters in adjacent columns.

[0103] When the energy storage converter 10 between the first side plate 22 and the second side plate 23 explodes, the first side plate 22 and the second side plate 23 can effectively block the fragments generated by the explosion of the energy storage converter 10 located between them, preventing the flying fragments from damaging the energy storage converters 10 in adjacent rows; and the first side plate 22 and the second side plate 23 are plate-shaped structures, which can prevent the flying fragments from penetrating the first side plate 22 and the second side plate 23. In addition, the first side plate 22 and the second side plate 23 can also effectively prevent the energy storage converter 10 between them from bulging and deforming and affecting the energy storage converters 10 in adjacent rows.

[0104] Heat dissipation holes 27 can also be provided on the side plates, that is, heat dissipation holes 27 are provided on both the first side plate 22 and the second side plate 23 to facilitate the heat dissipation of the energy storage converter 10.

[0105] In the example where each row of battery packs is located above a corresponding row of energy storage converters, among the multiple crossbeams 28 above each row of energy storage converters, the two ends of each crossbeam 28 are respectively fixedly connected to a first side plate 22 and a second side plate 23.

[0106] In the example where each row of battery packs is located below a corresponding row of energy storage converters, among the multiple crossbeams 28 below each row of energy storage converters, the two ends of each crossbeam 28 are respectively fixedly connected to a first side plate 22 and a second side plate 23.

[0107] Port 12 can be provided on the back of the energy storage converter 10. Port 12 is the output port of the energy storage converter 10.

[0108] In some examples, such as Figure 6 As shown, the energy storage cabinet 80 may further include a partition 21, which is located on the back side of the energy storage converter 10. The first side plate 22 and the second side plate 23 are both connected to the partition 21. A port 12 is provided on the back side of the energy storage converter 10. Figure 9 As shown, a conductive busbar 40 is disposed on the surface of the partition 21 facing the energy storage converter 10, and the port 12 is plugged into the conductive busbar 40. For example, the conductive busbar 40 includes three metal busbars representing three phases of electricity, namely a first-phase metal busbar, a second-phase metal busbar, and a third-phase metal busbar. For example, the metal busbars are copper busbars.

[0109] This can be understood as follows: a partition 21 is provided on the back side of each row of energy storage converters; in an example where a row of energy storage converters includes one energy storage converter 10, a set of conductive bars 40 is provided on the surface of the partition 21 facing the energy storage converter 10, and the set of conductive bars 40 is plugged into the port 12 of the energy storage converter 10; in an example where a row of energy storage converters includes multiple energy storage converters 10, multiple sets of conductive bars 40 are provided on the surface of the partition 21 facing the energy storage converter 10, and the multiple sets of conductive bars 40 are spaced apart along the height direction of the energy storage cabinet 80, and the multiple sets of conductive bars 40 correspond one-to-one with the multiple energy storage converters 10 in the corresponding row, and each set of conductive bars 40 is plugged into the port 12 of the corresponding energy storage converter 10.

[0110] A protective element is provided on the partition 21, which is arranged around the outer periphery of the conductive busbar 40. The protective element is used to protect the conductive busbar 40 located therein. When the energy storage converter 10 explodes, the protective element can protect the conductive busbar 40. On the one hand, the protective element can prevent the conductive busbar 40 from being damaged by the flying fragments of the energy storage converter 10; on the other hand, the protective element can prevent the explosive gas flow from the explosion vent and flowing to the protective element from impacting the conductive busbar 40.

[0111] In an example where a column of energy storage converters includes one energy storage converter 10, a set of conductive bars 40 and a protective element are provided on the surface of the partition 21 facing the energy storage converter 10. The protective element is arranged around the outer periphery of the set of conductive bars 40. In an example where a column of energy storage converters includes multiple energy storage converters 10, multiple sets of conductive bars 40 and multiple protective elements are provided on the surface of the partition 21 facing the energy storage converter 10. The multiple protective elements are distributed along the height direction of the energy storage cabinet 80. The multiple sets of conductive bars 40 and multiple protective elements on the partition 21 correspond one-to-one. Each protective element is arranged around the outer periphery of the corresponding set of conductive bars 40. The multiple sets of conductive bars 40 correspond one-to-one with the multiple energy storage converters 10 in the corresponding column. Each set of conductive bars 40 is plugged into the port 12 of the corresponding energy storage converter 10.

[0112] The partition 21 has one or more protrusions 211 protruding from the surface of the energy storage converter 10. Each protrusion 211 forms a protective element, and the corresponding conductive bus 40 is located in the protective space 212 enclosed by the protrusions 211.

[0113] The protrusion 211 may include a first protrusion 2111, a second protrusion 2112, a third protrusion 2113, and a fourth protrusion 2114 arranged sequentially along the circumference surrounding the conductive bus 40, forming a protective space 212. For example, the first protrusion 2111 and the third protrusion 2113 are arranged opposite each other, and the second protrusion 2112 and the fourth protrusion 2114 are arranged opposite each other.

[0114] Combination Figure 10 The partition 21 shown has a second protrusion 2112 integrally formed with the partition 21, and a fourth protrusion 2114 integrally formed with the partition 21. The first protrusion 2111 and the partition 21 are detachably connected. The third protrusion 2113 and the partition 21 are detachably connected.

[0115] The partition 21 has one or more second openings 216, each second opening 216 corresponding to a protrusion 211, and the multiple second openings 216 correspond one-to-one with the multiple protrusions 211; the second protrusion 2112 and the fourth protrusion 2114 of the same protrusion 211 are both located on the side of the corresponding second opening 216 facing the energy storage converter 10, and the second protrusion 2112 and the fourth protrusion 2114 of the same protrusion 211 are respectively located on opposite sides of the corresponding second opening 216; the first protrusion 2111 and the third protrusion 2113 of the same protrusion 211 are both located on the side of the corresponding second opening 216 facing the energy storage converter 10, and the first protrusion 2111 and the third protrusion 2113 of the same protrusion 211 are respectively located on opposite sides of the corresponding second opening 216. The protective space 212 formed by each protrusion 211 is connected to the corresponding second opening 216.

[0116] In an example where multiple second openings 216 are provided on the partition 21, the multiple second openings 216 can be connected to form a third opening 217, that is, the third opening 217 includes multiple second openings 216. Compared to the multiple second openings 216 being set independently, the setting of the third opening 217 simplifies the processing of the partition 21.

[0117] In an example where multiple protrusions 211 are spaced apart along the height of the energy storage cabinet 80 on the partition 21, in two adjacent protrusions 211, the first protrusion 2111 of one protrusion 211 and the third protrusion 2113 of the other protrusion 211 are integrally formed. For example Figure 11 The first structural member 213 is detachably connected to the partition 21. The first structural member 213 includes a first protrusion 2111 and a third protrusion 2113. The first protrusion 2111 of the first structural member 213 is the first protrusion 2111 of one of two adjacent protrusions 211, and the third protrusion 2113 of the first structural member 213 is the third protrusion 2113 of the other of two adjacent protrusions 211.

[0118] In an example where two protrusions 211 are spaced apart along the height of the energy storage cabinet 80 on the partition 21, the two protrusions 211 are an upper protrusion and a lower protrusion, respectively; the first structural member 213 includes a third protrusion 2113 of the upper protrusion and a first protrusion 2111 of the lower protrusion; for example Figure 12 The second structural member 214 includes a first protrusion 2111 of the upper protrusion, and the second structural member 214 is detachably connected to the partition 21; for example Figure 13 The third structural member 215 includes a third protrusion 2113 of the lower protrusion, and the third structural member 215 is detachably connected to the partition 21.

[0119] In the example where the energy storage cabinet 80 includes an AC busbar 81, the AC busbar 81 is located on the back side of each row of energy storage converters 10. A partition 21 is provided between the back side of each row of energy storage converters 10 and the AC busbar 81, that is, the partition 21 is located between the back side of the corresponding row of energy storage converters 10 and the AC busbar 81. Each set of conductive bars 40 on the partition 21 passes through the partition 21 and is electrically connected to the AC busbar 81. The output terminal of the energy storage converter 10 is electrically connected to the AC busbar 81 through the conductive bars 40.

[0120] The partition 21 serves two purposes: firstly, it provides fixed support for the busbar 40; secondly, it effectively blocks debris generated by the explosion of the energy storage converter 10, preventing damage to the AC busbar 81 on the other side of the partition 21; and thirdly, its plate-like structure prevents debris from penetrating the partition 21. Furthermore, the partition 21 also prevents the AC busbar 81 on the other side of the partition 21 from being affected when the energy storage converter 10 bulges and deforms due to the explosion. For example, it can prevent the bulging converter from... The baffle 21 can also block the explosive gas flow from the explosion vent and flow to the baffle 21, thus blocking the explosive gas flow on the side of the baffle 21 facing the energy storage converter 10, and preventing or reducing the explosive gas flow to the other side of the baffle 21, so as to impact and affect the AC busbar 81 on the other side of the baffle 21; and the baffle 21 with plate structure can withstand the impact of explosive gas flow relatively well.

[0121] For example, in the energy storage cabinet 80, multiple rows of energy storage converters are distributed along the length of the energy storage cabinet 80; along the width of the energy storage cabinet 80, the AC busbar 81 is located on the back side of each row of energy storage converters.

[0122] like Figure 14 As shown, the partition 21 is provided with three connecting bars 41; the three connecting bars 41 are respectively the first phase connecting bar, the second phase connecting bar, and the third phase connecting bar. In one example, the first phase connecting bar includes a first phase metal bar, the second phase connecting bar includes a second phase metal bar, and the third phase connecting bar includes a third phase metal bar. This first phase metal bar, the second phase metal bar, and the third phase metal bar form a set of conductive bars 40 representing the three metal bars of three-phase electricity. In another example, the first phase connection bus includes multiple first-phase metal busbars distributed along the height direction of the energy storage cabinet 80, the second phase connection bus includes multiple second-phase metal busbars distributed along the height direction of the energy storage cabinet 80, and the third phase connection bus includes multiple third-phase metal busbars distributed along the height direction of the energy storage cabinet 80. The multiple first-phase metal busbars of the first phase connection bus correspond one-to-one with multiple sets of conductive busbars 40, the multiple second-phase metal busbars of the second phase connection bus correspond one-to-one with multiple sets of conductive busbars 40, and the multiple third-phase metal busbars of the third phase connection bus correspond one-to-one with multiple sets of conductive busbars 40. A corresponding first-phase metal busbar, a corresponding second-phase metal busbar, and a corresponding third-phase metal busbar form three metal busbars representing three-phase electricity in a corresponding set of conductive busbars 40.

[0123] Each connecting row 41 includes a first row segment 411 and a second row segment 412 fixedly connected to the first row segment 411. The first row segment 411 and the second row segment 412 are perpendicular to each other. The second row segment 412 includes a first phase metal busbar, a second phase metal busbar, or a third phase metal busbar. At least one second row segment 412 is connected to the first row segment 411. When multiple second row segments 412 are connected to the first row segment 411, the multiple second row segments 412 correspond one-to-one with multiple first phase metal busbars, or one-to-one with multiple second phase metal busbars, or one-to-one with multiple third phase metal busbars. Each second row segment 412 includes a corresponding first phase metal busbar, or a corresponding second phase metal busbar, or a corresponding third phase metal busbar.

[0124] The first section 411 is located on the side of the partition 21 facing the AC busbar 81, and is electrically connected to the AC busbar 81. The second section 412 passes through the second opening 216, so that the second section 412 extends from the side of the partition 21 facing the AC busbar 81 to the side of the partition 21 facing the energy storage converter 10, and the end of the second section 412 extending into the side of the partition 21 facing the energy storage converter 10 is plugged into the port 12 of the energy storage converter 10. The output terminal of the energy storage converter 10 is electrically connected to the AC busbar 81 through the connecting busbar 41.

[0125] When multiple second rows of segments 412 are connected to the first row of segments 411, multiple second openings 216 are provided on the partition plate 21, and the multiple second rows of segments 412 are inserted into the multiple second openings 216 in a corresponding manner.

[0126] A connecting plate 218 is fixedly connected to the surface of the AC busbar 81 facing the partition 21, and the connecting bar 41 is connected and fixed to the partition 21 through the connecting plate 218.

[0127] For example, connector 41 is a copper busbar.

[0128] For example, connecting row 41 is a one-piece molded structure.

[0129] like Figure 6 and Figure 15 As shown, the energy storage cabinet 80 in this embodiment may further include one or more rows of cluster control boxes, each row of cluster control boxes corresponding to one row of energy storage converters. In the example where the energy storage cabinet 80 includes one row of energy storage converters, the energy storage cabinet 80 includes only one first side plate 22 and one second side plate 23 located on both sides of the row of energy storage converters, and the row of energy storage converters and the row of cluster control boxes are arranged between the first side plate 22 and the second side plate 23. In the example where the energy storage cabinet 80 includes multiple rows of energy storage converters, the energy storage cabinet 80 includes multiple rows of cluster control boxes, and the multiple rows of cluster control boxes correspond one-to-one with the multiple rows of energy storage converters, with each row of energy storage converters and its corresponding row of cluster control boxes arranged between the first side plate 22 and the second side plate 23 on both sides of the row of energy storage converters.

[0130] Each cluster control box is electrically connected to the corresponding energy storage converter.

[0131] Each cluster control box includes one or more cluster control boxes 30 distributed along the height of the energy storage cabinet 80. Each cluster control box 30 in each row is electrically connected to one energy storage converter 10 of a corresponding row of energy storage converters. In an example where each row of cluster control boxes includes one cluster control box 30, the corresponding row of energy storage converters includes one energy storage converter 10, and the cluster control box 30 in each row is electrically connected to one energy storage converter 10 of the corresponding row of energy storage converters. In an example where each row of cluster control boxes includes multiple cluster control boxes 30, the corresponding row of energy storage converters includes multiple energy storage converters 10, and the multiple cluster control boxes 30 in each row are electrically connected to the multiple energy storage converters 10 of the corresponding row of energy storage converters in a one-to-one correspondence.

[0132] The output of each cluster control box 30 is electrically connected to the input of the corresponding energy storage converter 10; for example, the output of each cluster control box 30 is connected to the input of the corresponding energy storage converter 10 via a cable.

[0133] Since each row of battery packs corresponds to a row of energy storage converters, and each row of energy storage converters corresponds to a row of cluster control boxes, each row of battery packs corresponds to a row of cluster control boxes. The output terminal of each battery cluster in each row of battery packs is electrically connected to the input terminal of one of the cluster control boxes 30 in the corresponding row. Each cluster control box 30 is used to control the on / off connection between the corresponding battery cluster and the corresponding energy storage converter 10.

[0134] The arrangement direction of each column of energy storage converters and the corresponding column of cluster control boxes can be parallel to the width direction of the energy storage cabinet 80 or parallel to the length direction of the energy storage cabinet 80.

[0135] Each cluster control box is located on the side of the corresponding energy storage converter away from the partition 21, that is, each energy storage converter is located between the cluster control box and the partition 21 of the corresponding column.

[0136] Heat dissipation holes 27 can be provided on both the first side plate 22 and the second side plate 23 to facilitate heat dissipation of the energy storage converter 10 and the cluster control box 30.

[0137] like Figure 15 As shown, the first side plate 22 and the second side plate 23, the partition 21, and the multiple crossbeams 28 arranged opposite to each other constitute a protective cover 20 with a frame structure. In the protective cover 20, the two ends of each crossbeam 28 are fixedly connected to the first side plate 22 and the second side plate 23 respectively. The multiple crossbeams 28 are located on the top or bottom side of the protective cover 20. It can be understood that the multiple crossbeams 28 are located above or below the energy storage converter 10 inside the protective cover 20. The distribution direction of the first side plate 22 and the second side plate 23 of the protective cover 20 can be parallel to the length direction of the energy storage cabinet 80, and the multiple crossbeams 28 can be distributed along the width direction of the energy storage cabinet 80.

[0138] Each row of energy storage converters and the corresponding cluster control box are located within the corresponding protective cover 20. That is, each row of energy storage converters and the corresponding cluster control box are integrated within the corresponding protective cover 20 to integrate the power conversion component 71. It can be understood that the energy storage cabinet 80 includes one or more power conversion components 71. Each power conversion component 71 includes a protective cover 20, and a row of energy storage converters and a row of cluster control boxes located within the protective cover 20. Multiple power conversion components 71 can be distributed along the length direction of the energy storage cabinet 80 or along the width direction of the energy storage cabinet 80.

[0139] The integration of the power conversion component 71 is beneficial for achieving greater energy storage requirements within the limited volume of the energy storage cabinet 80.

[0140] In the energy storage cabinet 80, each power conversion component 71 and the corresponding column of battery packs are distributed along the height direction of the energy storage cabinet 80, for example, each power conversion component 71 is located above or below the corresponding column of battery packs.

[0141] In the example where the energy storage cabinet 80 includes multiple power conversion components 71, if the energy storage converter 10 of one of the power conversion components 71 explodes, and a large amount of explosive gas flows into the protective cover 20 of other power conversion components 71, it will impact the conductive busbars 40 of the other power conversion components 71. The impacted conductive busbars 40 may malfunction or disconnect from the port 12, thus affecting the operation of other power conversion components 71. It can be seen that the explosion of the energy storage converter 10 of one power conversion component 71 may affect the entire energy storage cabinet 80. In the embodiment of this application, the multiple power conversion components 71 of the energy storage cabinet 80 are distributed along its length or width direction. The power conversion components 71 have a partition 21, a first side plate 22, and a second side plate 23 with a plate-like structure, which can block a large amount of explosive gas from flowing into the protective cover 20 of other power conversion components 71. In addition, the protective components can further protect the conductive busbars 40.

[0142] The energy storage cabinet 80 may further include a support member 50, on which the energy storage converter 10 is mounted. Guide rails 24 are provided on both the first side plate 22 and the second side plate 23, extending along the arrangement direction of the energy storage converter 10 and the partition plate 21. The support member 50 is slidably mounted on the guide rails 24, allowing it to slide in or out between the first side plate 22 and the second side plate 23, thereby facilitating the assembly of the energy storage converter 10 with the first side plate 22 and the second side plate 23. For example, the support member 50 may be a support tray.

[0143] It can be understood that the power conversion component 71 may also include a support member 50; in the power conversion component 71, the energy storage converter 10 and the cluster control box 30 are both mounted on the support member 50, the support member 50 is slidably mounted on the guide rail 24, and the support member 50 and the energy storage converter 10 and the cluster control box 30 on it are integrated into a component, which slides in or out between the first side plate 22 and the second side plate 23 along the guide rail 24, thereby facilitating the assembly of the energy storage converter 10, the cluster control box 30, and the first side plate 22 and the second side plate 23; it can also be understood that the support member 50 slides in or out of the protective cover 20 along the guide rail 24.

[0144] In some examples, the extension direction of the guide rail 24 is parallel to the length direction of the energy storage cabinet 80; in other examples, the extension direction of the guide rail 24 is parallel to the width direction of the energy storage cabinet 80.

[0145] The opening on the side opposite to the partition 21 is the mounting port 201 of the protective cover 20, so that the support member 50 can slide into or out of the protective cover 20 from the mounting port 201. Along the width direction of the energy storage cabinet 80, the partition 21 is located on one side of the protective cover 20; the distribution direction of the mounting port 201 and the partition 21 can be parallel to the width direction of the energy storage cabinet 80; it can also be understood that along the width direction of the energy storage cabinet 80, the support member 50 slides into or out of the protective cover 20 from the side of the protective cover 20 opposite to the first side plate 21, and the side opposite to the first side plate 21 includes the mounting port 201.

[0146] The cabinet door of the energy storage cabinet 80 can be located on one side of the energy storage cabinet 80 along its width direction. In this case, the extension direction of the guide rail 24 can be parallel to the width direction of the energy storage cabinet 80, so that the support member 50 can slide into or out of the protective cover 20 along the width direction of the energy storage cabinet 80. The mounting port 201 can be located on the side of the cabinet door along the width direction of the energy storage cabinet 80. It can be understood that the mounting port 201 is adjacent to the cabinet door or opposite to the cabinet door. In this way, for the power conversion component 71 installed in the cabinet 802, the support member 50 can easily slide into or out of the protective cover 20, thereby facilitating the maintenance and operation of the energy storage converter 10 and the cluster control box 30.

[0147] In some examples, each support 50 is provided with an energy storage converter 10 and a cluster control box 30. It can be understood that the power conversion assembly 71 includes one or more first assemblies 72, each first assembly 72 including an energy storage converter 10, a cluster control box 30, and a support 50; in the first assembly 72, the energy storage converter 10 and the cluster control box 30 are both disposed on the support 50, and the energy storage converter 10 and the cluster control box 30 can be arranged along the width direction of the energy storage cabinet 80. The cluster control box 30 is located on the side of the energy storage converter 10 facing away from the partition 21, and the cluster control box 30 is located on the side of the energy storage converter 10 near the mounting port 201. The energy storage converter 10 is located between the cluster control box 30 and the partition 21, with the front of the energy storage converter 10 facing the cluster control box 30 and the back of the energy storage converter 10 facing the partition 21.

[0148] In the example where each row of energy storage converters includes multiple energy storage converters 10 and each row of cluster control boxes includes multiple cluster control boxes 30, each power conversion component 71 includes multiple support members 50 and each power conversion component 71 includes multiple first components 72; the multiple first components 72 correspond one-to-one with the multiple energy storage converters 10, the multiple first components 72 correspond one-to-one with the multiple cluster control boxes 30, and the multiple first components 72 correspond one-to-one with the multiple support members 50. Each first component 72 includes a corresponding energy storage converter 10, a corresponding cluster control box 30, and a corresponding support member 50; the multiple first components 72 are arranged inside the protective cover 20 along the height direction of the energy storage cabinet 80.

[0149] In the specific assembly process, the energy storage converter 10 and the cluster control box 30 can be placed on the support 50 to form a first component 72; multiple first components 72 can also be assembled as needed; then one or more first components 72 are slid into the protective cover 20 to form a power conversion component 71; then the power conversion component 71 is installed into the cabinet 802.

[0150] The multiple crossbeams 28, partitions 21, first side plate 22, second side plate 23, and support members 50 inside the protective cover 20 can work together to suppress the protruding deformation of the energy storage converter 10.

[0151] In the embodiments of this application, such as Figure 16 The support member 50 shown includes a plurality of spaced-apart support beams 51. In the first assembly 72, both the cluster control box 30 and the energy storage converter 10 are mounted on the support beams 51, and the arrangement of the support beams 51 facilitates heat dissipation for the cluster control box 30 and the energy storage converter 10. For example, the plurality of support beams 51 of the support member 50 are spaced-apart along the width direction of the energy storage cabinet 80.

[0152] Along the distribution direction of the plurality of support beams 51 of the support member 50, one or more second connecting beams 54 are connected between adjacent support beams 51, and the two ends of the second connecting beams 54 are fixedly connected to the two adjacent support beams 51 respectively. The plurality of second connecting beams 54 between adjacent support beams 51 can be distributed along the length direction of the energy storage cabinet 80. For example, the second connecting beams 54 extend along the width direction of the energy storage cabinet 80, and the second connecting beams 54 are perpendicular to the support beams 51.

[0153] The support member 50 may further include support plates 52; along the arrangement direction of the first side plate 22 and the second side plate 23, support plates 52 are provided on opposite sides of the support member 50, that is, the support member 50 includes two opposite support plates 52, and the two ends of each support beam 51 are fixedly connected to the two support plates 52 respectively. For example, the two support plates 52 of the support member 50 are distributed along the length direction of the energy storage cabinet 80.

[0154] The first surfaces of the multiple support beams 51 are used to support the energy storage converter 10 and the cluster control box 30, that is, the energy storage converter 10 and the cluster control box 30 are disposed on the first surfaces of the multiple support beams 51. The shape of the support beams 51 is not limited. For example, the support beams 51 are square bars or round bars. When the support beams 51 are square bars, one surface of the square bar is used to form the first surface. When the support beams 51 are round bars, an axial line on the outer cylindrical surface of the round bar is used to form the first surface.

[0155] The support plate 52 is provided with a step 521, and the first surface of multiple support beams 51 is flush with the step surface 5211 of the step 521, so that the energy storage converter 10 is placed on the support beam 51 and the step surface 5211 of the step 521, and the cluster control box 30 is placed on the support beam 51 and the step surface 5211 of the step 521.

[0156] Combination Figure 17 As shown, due to the large length of the energy storage converter 10, the length direction of the energy storage converter 10 is parallel to the length direction of the energy storage cabinet 80. The energy storage converter 10 is set on the step surface 5211 of the support beam 51 and the two support plates 52. In this way, the energy storage converter 10 is stuck between the step side surface 5212 of the two support plates 52. The step surface 5211 of the step 521 is perpendicular to the step side surface 5212. The step side surface 5212 of the two support plates 52 plays a limiting role for the energy storage converter 10, preventing the energy storage converter 10 from shaking along the arrangement direction of the first side plate 22 and the second side plate 23.

[0157] Because the cluster control box 30 is relatively short, its length direction is parallel to that of the energy storage cabinet 80. The cluster control box 30 is mounted on the step surface 5211 of the supporting beam 51 and the supporting plate 52. A limiting strip 55 is mounted on the supporting beam 51. The limiting strip 55 can be fixedly connected to the supporting beam 51 and extends along the width direction of the energy storage cabinet 80. The limiting strip 55 is positioned opposite to the step side 5212 of the supporting plate 52 so that the cluster control box 30 is locked between the step side 5212 of the supporting plate 52 and the limiting strip 55. It can be understood that along the length direction of the cluster control box 30, the limiting strip 55 and the step side 5212 of the supporting plate 52 are located on both sides of the cluster control box 30. The limiting strip 55 and the step side 5212 of the supporting plate 52 limit the cluster control box 30 and prevent the cluster control box 30 from shaking along the arrangement direction of the first side plate 22 and the second side plate 23.

[0158] In actual implementation, it is necessary to control the extension length of the limiting strip 55 along the width direction of the energy storage cabinet 80 to avoid the limiting strip 55 interfering with the energy storage converter 10. It can be understood that the limiting strip 55 is set on part of the support beam 51 of the support member 50, and the limiting strip 55 is connected to part of the support beam 51 of the support member 50.

[0159] Figure 18 The L-shaped plate 241 shown includes a first plate 2411 and a second plate 2412 that are perpendicular to each other. The second plate 2412 is used to be fixedly connected to the first side plate 22 or the second side plate 23. The first plate 2411 forms a guide rail 24.

[0160] The power conversion assembly 71 includes one or more guide rail groups, each guide rail group including two guide rails 24, the two guide rails 24 of each guide rail group are respectively disposed on the first side plate 22 and the second side plate 23; each guide rail group corresponds to a first component 72, and the support member 50 of each first component 72 is slidably disposed on the two guide rails 24 of the corresponding guide rail group, so that the support member 50 of each first component 72 slides into or out of the protective cover 20 along the two guide rails 24 of the corresponding guide rail group.

[0161] When the power conversion component 71 includes multiple guide rail groups, the power conversion component 71 includes multiple first components 72, and the multiple guide rail groups correspond one-to-one with the multiple first components 72. For example, the multiple guide rail groups of the power conversion component 71 are distributed along the height direction of the energy storage cabinet 80, so that the multiple first components 72 of the power conversion component 71 are distributed along the height direction of the energy storage cabinet 80.

[0162] In this embodiment of the application, the energy storage cabinet 80 may further include a limiting plate 60, which is detachably connected to the first side plate 22 or the second side plate 23, and is detachably connected to one end of the support member 50 away from the partition 21.

[0163] Combination Figure 19 and Figure 20 As shown, the power conversion assembly 71 may also include a limiting plate 60, which is detachably connected to the first side plate 22 or the second side plate 23, and is detachably connected to one end of the support member 50 facing the mounting opening 201, that is, the limiting plate 60 is detachably connected to one end of the support member 50 away from the partition plate 21.

[0164] During the assembly of the power conversion component 71, before placing the support 50 on the guide rail 24, the limiting plate 60 is first detached from the first side plate 22 or the second side plate 23, and the limiting plate 60 is also detached from the support 50 to prevent the limiting plate 60 from affecting the placement of the support 50 on the guide rail 24. After the support 50 is slid along the guide rail 24 into the protective cover 20, combined with... Figure 21 As shown, the limiting plate 60 is connected and fixed to the first side plate 22 or the second side plate 23, and the limiting plate 60 is connected to one end of the support member 50 facing the mounting port 201, so that the support member 50 is connected and fixed to the first side plate 22 or the second side plate 23 through the limiting plate 60; and, along the extension direction of the guide rail 24, the connected limiting plate 60 is located on the side of the guide rail 24 facing the mounting port 201, which can also be understood as the connected limiting plate 60 being located on the side of the guide rail 24 away from the partition plate 21. The connected limiting plate 60 can block the support member 50 on the guide rail 24, preventing the installed support member 50 from sliding out of the protective cover 20 along the guide rail 24.

[0165] The power conversion component 71 includes one or more limiting components, each limiting component corresponding to a first component 72; each limiting component includes one or two limiting plates 60; when the limiting component includes one limiting plate 60, the limiting plate 60 of the limiting component can be detachably connected to the first side plate 22 or detachably connected to the second side plate 23; when the limiting component includes two limiting plates 60, one of the limiting plates 60 of the limiting component is detachably connected to the first side plate 22, and the other limiting plate 60 of the limiting component is detachably connected to the second side plate 23.

[0166] When the power conversion component 71 includes multiple limiting components, the power conversion component 71 includes multiple first components 72 and multiple guide rail groups. The multiple limiting components of the power conversion component 71 correspond one-to-one with the multiple first components 72, and the multiple guide rail groups of the power conversion component 71 correspond one-to-one with the multiple limiting components. The multiple limiting components are distributed along the height direction of the energy storage cabinet 80.

[0167] In the power conversion assembly 71 of this application embodiment, along the distribution direction of the first side plate 22 and the second side plate 23, at least one of the first side plate 22 and the second side plate 23 has a gap with the support member 50 disposed on the guide rail 24; that is, there may be a gap between the first side plate 22 and the support member 50, and no gap between the second side plate 23 and the support member 50; or there may be no gap between the first side plate 22 and the support member 50, and a gap between the second side plate 23 and the support member 50; or there may be a gap between the first side plate 22 and the support member 50, and a gap between the second side plate 23 and the support member 50.

[0168] During the assembly of the power conversion component 71, at least one of the first side plate 22 and the second side plate 23 has a gap with the support member 50, which makes it relatively easy to place the support member 50 on the two guide rails 24 of the corresponding guide rail group. However, due to the existence of the gap, the support member 50 can be offset along the distribution direction of the first side plate 22 and the second side plate 23. This makes it difficult to easily position the support member 50 in a suitable position in the distribution direction of the first side plate 22 and the second side plate 23. For example, if the energy storage converter 10 on the support member 50 needs to be connected to the conductive busbar 40 on the partition plate 21, and the position of the support member 50 is offset in the distribution direction of the first side plate 22 and the second side plate 23, the energy storage converter 10 on the support member 50 cannot be accurately connected to the conductive busbar 40 on the partition plate 21.

[0169] Regarding the aforementioned positional offset problem, such as Figure 19 and Figure 20As shown, a positioning piece 25 can be provided on the first surface of at least one of the first side plate 22 and the second side plate 23. The surface of the first side plate 22 facing the second side plate 23 is the first surface of the first side plate 22, and the surface of the second side plate 23 facing the first side plate 22 is the first surface of the second side plate 23. That is, the surface of the first side plate 22 facing the energy storage converter 10 is the first surface of the first side plate 22, and the surface of the second side plate 23 facing the energy storage converter 10 is the first surface of the second side plate 23. The positioning piece 25 is provided in the above-mentioned gap, that is, one surface of the positioning piece 25 contacts the support member 50 to limit the support member 50 to a suitable position in the distribution direction of the first side plate 22 and the second side plate 23, thereby limiting the energy storage converter 10 on the support member 50 to a suitable position in the distribution direction of the first side plate 22 and the second side plate 23, so that the port 12 of the energy storage converter 10 can be accurately inserted into the busbar 40.

[0170] The power conversion component 71 includes one or more positioning piece units, each positioning piece unit corresponding to a first component 72, and each positioning piece unit corresponding to a guide rail assembly; each positioning piece unit includes one or more positioning piece assemblies, and the multiple positioning piece assemblies of each positioning piece unit are distributed along the extension direction of the guide rail 24; each positioning piece assembly includes one or two positioning pieces 25; when each positioning piece assembly includes one positioning piece 25, one positioning piece 25 of each positioning piece assembly is disposed on the first plate surface of the first side plate 22 or the first plate surface of the second side plate 23, that is, one positioning piece 25 of each positioning piece assembly is disposed on the first plate surface of the first side plate 22 and the corresponding support member 50 of the first component 72. In the gap between, or one positioning piece 25 of each positioning piece assembly is located in the gap between the first plate surface of the second side plate 23 and the support member 50 of the corresponding first component 72; when each positioning piece assembly includes two positioning pieces 25, the two positioning pieces 25 of each positioning piece assembly are respectively located on the first plate surface of the first side plate 22 and the first plate surface of the second side plate 23, that is, one positioning piece 25 of each positioning piece assembly is located in the gap between the first plate surface of the first side plate 22 and the support member 50 of the corresponding first component 72, and the other positioning piece 25 of each positioning piece assembly is located in the gap between the first plate surface of the second side plate 23 and the support member 50 of the corresponding first component 72.

[0171] When the power conversion component 71 includes multiple positioning plate units, the power conversion component 71 includes multiple first components 72 and multiple guide rail groups. The support members 50 of the multiple first components 72 of the power conversion component 71 correspond one-to-one with the multiple positioning plate units, the multiple guide rail groups of the power conversion component 71 correspond one-to-one with the multiple first components 72, and the multiple positioning plate units of the power conversion component 71 correspond one-to-one with the multiple guide rail groups; the multiple positioning plate units are distributed along the height direction of the energy storage cabinet 80.

[0172] The guide rail 24 has a front end and a rear end along its extension direction; along the front end to the rear end of the guide rail 24, the support member 50 slides into the protective cover 20; along the rear end to the front end of the guide rail 24, the support member 50 slides out of the protective cover 20.

[0173] Compared to the front end of the guide rail 24 of the guide rail assembly, the positioning piece 25 of the corresponding positioning piece unit is close to the rear end of the guide rail 24. Thus, during the assembly of the power conversion component 71, when the support member 50 is placed at the front end of the guide rail 24 of the corresponding guide rail assembly, the existence of the aforementioned gap makes it relatively easy to place the support member 50 on the guide rail 24 of the corresponding guide rail assembly. After the support member 50 slides a certain distance along the guide rail 24 of the corresponding guide rail assembly, that is, when the support member 50 is about to slide to the rear end of the guide rail 24, the positioning piece 25 is located in the gap. At this time, the support member 50 can be fixed in a suitable position in the distribution direction of the first side plate 22 and the second side plate 23. It is evident that this design not only allows for convenient placement of the support member 50 on the guide rail 24, but also enables the support member 50 to be positioned appropriately in the distribution direction of the first side plate 22 and the second side plate 23. Consequently, the energy storage converter 10 on the support member 50 is positioned appropriately in the distribution direction of the first side plate 22 and the second side plate 23, thereby allowing the port 12 of the energy storage converter 10 to be accurately connected to the busbar 40.

[0174] Since the support member 50 slides into or out of the protective cover 20 from the side of the protective cover 20 opposite to the partition 21, it can be understood that the positioning piece 25 is closer to the partition 21 than the side of the protective cover 20 opposite to the partition 21. It can also be understood that the positioning piece 25 is closer to the partition 21 than the mounting port 201.

[0175] Combination Figure 22 The positioning piece 25 shown has a first end and a second end opposite to each other along the sliding direction of the support member 50; the support member 50 slides into the protective cover 20 along the first end to the second end of the positioning piece 25; the support member 50 slides out of the protective cover 20 along the second end to the first end of the positioning piece 25.

[0176] The first end of the positioning piece 25 is provided with a first guide slope 251, which is set at an acute angle to the sliding direction of the support member 50. The support member 50 slides into the positioning piece 25 along the first guide slope 251, allowing the support member 50 to slide into the positioning piece 25 relatively smoothly. In some examples, the first guide slope 251 is provided on the plate surface of the positioning piece 25 facing the support member 50.

[0177] The second end of the positioning piece 25 is provided with a second guide slope 252, which is set at an acute angle to the sliding direction of the support member 50. A portion of the support member 50 slides out along the second guide slope 252 to the positioning piece 25. In some examples, the second guide slope 252 is provided on the plate surface of the positioning piece 25 facing the support member 50.

[0178] In the power conversion component 71 of this application embodiment, such as Figure 19 and Figure 20 As shown, a stop portion 26 is provided on the first surface of at least one of the first side plates 22 and the second side plate 23; for example, along the height direction of the energy storage cabinet 80, the stop portion 26 is located above the guide rail 24. (Combined with...) Figure 23 and Figure 24 As shown, a mating part 53 is provided on the surface of the support member 50 facing the energy storage converter 10. For example, the mating part 53 is provided on the support plate 52.

[0179] Along the sliding direction of the support member 50, the stop portion 26 is located in front of the sliding direction of the mating portion 53; it can be understood that the stop portion 26 is located on the side of the mating portion 53 near the rear end of the guide rail 24; the stop portion 26 is used to abut against the mating portion 53. On the one hand, through the abutting engagement of the stop portion 26 and the mating portion 53, the support member 50 is limited in the sliding direction of the support member 50, so as to limit the support member 50 in the final position and confirm that the support member 50 has slid into the protective cover 20; on the other hand, through the abutting engagement of the stop portion 26 and the mating portion 53, the support member 50 after sliding into the protective cover 20 can be stably placed on the guide rail 24.

[0180] The power conversion component 71 includes one or more stop units and one or more mating units, with each stop unit corresponding to a mating unit; each stop unit corresponds to a first component 72, and each stop unit corresponds to a guide rail group; each mating unit corresponds to a first component 72, and each mating unit corresponds to a guide rail group.

[0181] When the power conversion component 71 includes multiple stop units and multiple mating units, the power conversion component 71 includes multiple first components 72 and multiple guide rail groups; the multiple stop units of the power conversion component 71 correspond one-to-one with the multiple mating units, the multiple stop units of the power conversion component 71 correspond one-to-one with the multiple first components 72, the multiple stop units of the power conversion component 71 correspond one-to-one with the multiple guide rail groups, the multiple mating units of the power conversion component 71 correspond one-to-one with the multiple first components 72, and the multiple mating units of the power conversion component 71 correspond one-to-one with the multiple guide rail groups; the multiple stop units are distributed along the height direction of the energy storage cabinet 80.

[0182] Each stop unit includes two stop assemblies, namely a first stop assembly and a second stop assembly. Each stop assembly includes one or more stop portions 26, which are distributed along the extension direction of the guide rail 24. The stop portions 26 of the first stop assembly are disposed on the first plate surface of the first side plate 22, and the stop portions 26 of the second stop assembly are disposed on the first plate surface of the second side plate 23. Each mating unit includes two mating assemblies, namely a first mating assembly and a second mating assembly. Each mating assembly includes one or more mating portions 53, which are distributed along the extension direction of the guide rail 24. The mating portions 53 of the first mating assembly are disposed on one support plate 52 of the corresponding support member 50, and the mating portions 53 of the second mating assembly are disposed on the other support plate 52 of the corresponding support member 50. Each stop portion 26 of the first stop assembly of each stop unit corresponds to a mating portion 53 of the first mating assembly of the corresponding mating unit, that is, the plurality of stop portions 26 of the first stop assembly of each stop unit corresponds to the plurality of mating portions 53 of the first mating assembly of the corresponding mating unit in a one-to-one correspondence. Each stop portion 26 of the second stop assembly of each stop unit corresponds to a mating portion 53 of the second mating assembly of the corresponding mating unit, that is, the plurality of stop portions 26 of the second stop assembly of each stop unit corresponds to the plurality of mating portions 53 of the second mating assembly of the corresponding mating unit in a one-to-one correspondence.

[0183] Combination Figure 25 As shown, along the height direction of the energy storage cabinet 80, the distance between the stop portion 26 and the surface of the corresponding support member 50 facing the energy storage converter 10 is the first distance H. Figure 25 The straight line L in the figure represents the surface of the support 50 facing the energy storage converter 10.

[0184] In a stop unit, when the first stop assembly includes multiple stop portions 26, and / or the second stop assembly includes multiple stop portions 26, that is, when multiple stop portions 26 are provided on the first plate surface of at least one of the first side plates 22 and the second side plates 23 along the extending direction of the guide rail 24, the first spacing between the multiple stop portions 26 on the same side plate gradually decreases along the sliding direction of the support member 50, that is, along the front end to the rear end of the guide rail 24; that is, the first spacing between the multiple stop portions 26 of the same stop assembly gradually decreases. In this way, it can be avoided that the other stop portions 26 in the same stop assembly, except for the stop portion 26 closest to the rear end of the guide rail 24, interfere with or block the mating portion 53 that does not correspond to the other stop portions 26, thereby avoiding interference with the sliding of the support member 50.

[0185] Taking a single stop assembly comprising two stop parts 26 as an example, such as Figure 25As shown, the two stop portions 26 of the same stop assembly are the first stop portion 261 and the second stop portion 262. The second stop portion 262 is located on the side of the first stop portion 261 closer to the rear end of the guide rail 24, that is, the second stop portion 262 is the stop portion 26 closest to the rear end of the guide rail 24 in this stop assembly. The corresponding mating assembly includes two mating portions 53, which are the first mating portion and the second mating portion, respectively. The first stop portion 261 abuts against the first mating portion, and the second stop portion 262 abuts against the second mating portion. If the first distance between the first stop portions 261 is less than or equal to the first distance between the second stop portions 262, then during the sliding process of the support member 50, the first stop portion 261 will interfere with and block the second mating portion, preventing the support member 50 from continuing to slide in. In this embodiment, the first distance of the first stop portion 261 is greater than the first distance of the second stop portion 262. Therefore, during the sliding process of the support member 50, the first stop portion 261 will not interfere with or block the second mating portion, so that the support member 50 can slide in smoothly.

[0186] The aforementioned first gap can be understood as the gap between the lowest point of the stop portion 26 and the surface of the corresponding support member 50 facing the energy storage converter 10.

[0187] For example, the contact surfaces of the stop 26 and the mating part 53 are set at an acute angle to the extending direction of the guide rail 24, so that the contact surfaces of the stop 26 and the mating part 53 are inclined. The inclined contact surfaces allow for a stop-fit ​​between the stop 26 and the mating part 53 in the extending direction of the guide rail 24, thus limiting the support member 50 in the sliding direction. Furthermore, they allow for abutment fit between the stop 26 and the mating part 53 in the height direction of the energy storage cabinet 80, ensuring that the support member 50 remains relatively stationary with respect to the guide rail 24 after sliding into the protective cover 20, thus stably positioning the support member 50 on the guide rail 24.

[0188] The surface of the stop portion 26 that contacts the mating portion 53 is a first contact surface, and the first contact surface is set at an acute angle to the extending direction of the guide rail 24; the surface of the mating portion 53 that contacts the stop portion 26 is a second contact surface, and the second contact surface is set at an acute angle to the extending direction of the guide rail 24. The first contact surface and the second contact surface are parallel.

[0189] In some examples, the first contact surface is a plane. In other examples, the first contact surface is wavy, with each protrusion of the wave extending along the distribution direction of the first side plate 22 and the second side plate 23, and multiple protrusions of the wave distributed along the inclined direction of the first contact surface; the wavy first contact surface can increase the friction between the first contact surface and the second contact surface, and improve the contact effect between the first contact surface and the second contact surface.

[0190] like Figure 26 As shown, a fixing part 231 can be provided on the first side plate 22 or the second side plate 23, and a stop part 26 is fixedly provided on the fixing part 231. For example, a portion of the first side plate 22 or the second side plate 23 can be folded outward to form the fixing part 231.

[0191] In this embodiment of the application, the energy storage cabinet 80 includes a plurality of first connecting beams 29, and the two ends of each first connecting beam 29 are fixedly connected to a first side plate 22 and a second side plate 23, respectively. Figure 19 and Figure 20 As shown, the protective cover 20 includes a plurality of first connecting beams 29, and the two ends of each first connecting beam 29 are fixedly connected to the first side plate 22 and the second side plate 23 respectively; for example, the plurality of first connecting beams 29 can be distributed along the width direction of the energy storage cabinet 80.

[0192] Along the height direction of the energy storage cabinet 80, multiple first connecting beams 29 are provided on the bottom or top side of the protective cover 20; along the height direction of the energy storage cabinet 80, multiple crossbeams 28 and multiple first connecting beams 29 are respectively provided on opposite sides of the protective cover 20.

[0193] Multiple first connecting beams 29 can be located between the support member 50 and the bottom wall of the energy storage cabinet 80; wherein, when the power conversion assembly 71 includes multiple first components 72, the multiple first connecting beams 29 can be located between the support member 50 of the bottommost first component 72 and the bottom wall of the energy storage cabinet 80. The multiple first connecting beams 29 are spaced apart, which is beneficial for heat dissipation of the energy storage converter 10 and the cluster control box 30.

[0194] In some examples of energy storage cabinets 80, such as Figure 27 As shown, the energy storage cabinet 80 includes a power assembly 70 located inside the cabinet 802. The power assembly 70 includes a power conversion component 71 and a corresponding row of battery packs. The multiple battery packs 82 of the row of battery packs are stacked along the height direction of the energy storage cabinet 80. In the power assembly 70, the row of battery packs and the power conversion component 71 are distributed along the height direction of the energy storage cabinet 80, that is, the row of battery packs is located above or below the power conversion component 71.

[0195] For example Figure 27 In the power assembly 70 shown, a row of battery packs includes four battery packs 82. These four battery packs 82 can be a battery cluster or two battery clusters. Each of the two battery clusters includes two battery packs 82.

[0196] The energy storage cabinet 80 may include multiple power supply components 70, which are distributed along the length of the energy storage cabinet 80.

[0197] The energy storage cabinet 80 can also have multiple placement positions inside it along its length, with multiple power components 70 corresponding to multiple placement positions one by one, so that each power component 70 is placed in the corresponding placement position.

[0198] The energy storage cabinet 80 may further include at least one vertical rod unit disposed within the cabinet body 802, each vertical rod unit corresponding to a placement position; the vertical rod unit includes two vertical rod assemblies spaced apart along the length direction of the energy storage cabinet 80; the two vertical rod assemblies of each vertical rod unit form a corresponding placement position; each vertical rod assembly includes a plurality of vertical rods 83 distributed along the width direction of the energy storage cabinet 80, the top end of each vertical rod 83 being fixedly connected to the inner top wall of the cabinet body 802, and the bottom end of each vertical rod 83 being fixedly connected to the inner bottom wall of the cabinet body 802.

[0199] The battery pack 82 of the power assembly 70 in each placement position can be connected to the vertical bar 83 of the corresponding vertical bar unit, and the protective cover 20 of the power assembly 70 in each placement position can be connected to the vertical bar 83 of the corresponding vertical bar unit, so that each power assembly 70 can be fixed inside the cabinet 802.

[0200] After the power conversion component 71 is installed into the cabinet 802, the limiting plate 60 of the power conversion component 71 can also be connected and fixed to the vertical rod 83 of the corresponding vertical rod unit.

[0201] In each power supply component 70, one first component 72 corresponds to one battery cluster. The input terminal of the cluster control box 30 of the first component 72 is connected to the total output terminal of the corresponding battery cluster, and the output terminal of the cluster control box 30 of the first component 72 is connected to the input terminal of the energy storage converter 10. For example, the input terminal of the cluster control box 30 of the first component 72 is connected to the total output terminal of the corresponding battery cluster via a cable, and the output terminal of the cluster control box 30 of the first component 72 is connected to the input terminal of the energy storage converter 10 via a cable.

[0202] The cabinet door 804 of the energy storage cabinet 80 can be located on one side of the energy storage cabinet 80 along the width direction of the energy storage cabinet 80. The arrangement direction of each column of energy storage converters and the corresponding column of cluster control boxes is parallel to the width direction of the energy storage cabinet 80, which can reduce the space occupied by the energy storage converters 10 and cluster control boxes 30 on the front of the energy storage cabinet 80. The side where the cabinet door 804 of the energy storage cabinet 80 is located is the front of the energy storage cabinet 80.

[0203] Each row of energy storage converters is located on the side of the cluster control box of the corresponding row away from the cabinet door 804, that is, each row of cluster control boxes is located on the side of the energy storage converter of the corresponding row closer to the cabinet door 804.

[0204] In an example where multiple power components 70 of the energy storage cabinet 80 are distributed along the length of the energy storage cabinet 80, combined with Figure 28As shown, along the width direction of the energy storage cabinet 80, the AC busbar 81 can be arranged on the rear side of the power conversion component 71. This can be understood as the AC busbar 81 being arranged on the side of the power conversion component 71 facing away from the cabinet door 804. The power conversion component 71 has a partition 21, a first side plate 22, and a second side plate 23, which are plate-shaped structures. These can block the flow of explosive gas to the AC busbar 81, thereby avoiding or reducing the impact of the explosive gas on the AC busbar 81.

[0205] The AC busbar 81 includes three metal busbars 811 representing three-phase electricity.

[0206] For the aforementioned structure of multiple beams 28 arranged at intervals, the multiple beams 28 can be replaced with a protective plate 281 with heat dissipation holes, such as... Figure 29 As shown, the protective plate 281 with heat dissipation holes has at least the same effect as the structure of multiple crossbeams 28. That is, the protective plate 281 can not only block the fragments generated by the energy storage converter 10 due to the explosion, avoiding or reducing the risk of damage to the battery cluster by the flying fragments, but also avoid the impact on the battery cluster when the energy storage converter 10 bulges and deforms due to the explosion. The heat dissipation holes on the protective plate 281 can achieve heat dissipation for the energy storage converter 10. Based on this, the energy storage cabinet including the protective plate 281 has at least the same effect as the energy storage cabinet including the crossbeams 28.

[0207] In addition, the protective plate 281 can also block the explosive gas flow that is ejected from the explosion vent and flows upward or downward, so as to block the explosive gas flow on the side of the protective plate 281 facing the energy storage converter 10, and prevent or reduce the explosive gas flow to the other side of the protective plate 281, so as to impact and affect the battery pack on the other side of the protective plate 281; and the plate-shaped protective plate 281 can withstand the impact of the explosive gas flow relatively well.

[0208] All structural relationships of the aforementioned multiple beams 28 structures are applicable to the protective plate 281 with heat dissipation holes; for example, a protective plate 281 with heat dissipation holes is provided between the housing 13 of the energy storage converter 10 and the battery cluster; for another example, a protective plate 281 with heat dissipation holes is provided between each row of battery packs and the corresponding row of energy storage converters; for yet another example, the first side plate 22 and the second side plate 23 are fixedly connected to both ends of the protective plate 281 respectively.

[0209] The heat dissipation holes on the protective plate 281 are Figure 29 The first heat dissipation hole 282 in the middle.

[0210] This application embodiment also provides an energy storage cabinet, the energy storage cabinet 80 includes one or more rows of energy storage converters, each row of energy storage converters includes one or more energy storage converters 10, and the multiple energy storage converters 10 of each row of energy storage converters are distributed along the height direction of the energy storage cabinet 80.

[0211] The energy storage converter 10 includes a housing 13 and power devices, with the power devices disposed within the housing 13.

[0212] Each energy storage converter 10 has an explosion vent on the side of its housing 13, and the explosion vent is covered with an explosion vent plate 11.

[0213] Each row of energy storage converters has side plates on both sides along the direction perpendicular to the height of the energy storage cabinet 80. For example, each row of energy storage converters has side plates on both sides along the length of the energy storage cabinet 80, or each row of energy storage converters has side plates on both sides along the width of the energy storage cabinet 80. In an example where the energy storage cabinet 80 includes multiple rows of energy storage converters, each row of energy storage converters has side plates on both sides along the distribution direction of the multiple rows of energy storage converters. The side plates on both sides of each row of energy storage converters are a first side plate 22 and a second side plate 23, respectively.

[0214] In an example where the energy storage converter 10 has an explosion vent on only one side, the explosion vent of the energy storage converter 10 is positioned opposite to one of the two side plates on both sides of the energy storage converter 10. That is, the explosion vent of the energy storage converter 10 is positioned opposite to the first side plate 22 on one side or the second side plate 23 on the other side of the energy storage converter 10. In other words, the explosion vent of the energy storage converter 10 is positioned facing the first side plate 22 or the second side plate 23.

[0215] In the example where explosion vents are provided on both sides of the energy storage converter 10, each explosion vent is covered with an explosion vent plate 11; the explosion vents on both sides of the energy storage converter 10 are respectively arranged opposite to the first side plate 22 and the second side plate 23, that is, the explosion vents on both sides of the energy storage converter 10 are respectively arranged facing the first side plate 22 and the second side plate 23; the two explosion vents of the energy storage converter 10 can be distributed along the length direction of the energy storage cabinet 80 or along the width direction of the energy storage cabinet 80.

[0216] When the energy storage converter 10 explodes, the arrangement of the first side plate 22 and the second side plate 23 can block the airflow ejected from the explosion vent, thereby blocking most or even all of the airflow ejected from the explosion vent between the first side plate 22 and the second side plate 23. This prevents or reduces the flow of the explosive airflow to adjacent rows of energy storage converters, thus avoiding impact and influence on them. Furthermore, the plate-like structure of the first side plate 22 and the second side plate 23 can effectively withstand the impact of the explosive airflow ejected from the explosion vent.

[0217] When the energy storage converter 10 between the first side plate 22 and the second side plate 23 explodes, the first side plate 22 and the second side plate 23 can effectively block the fragments generated by the explosion of the energy storage converter 10 located between them, preventing the flying fragments from damaging the energy storage converters 10 in adjacent rows; and the first side plate 22 and the second side plate 23 are plate-shaped structures, which can prevent the flying fragments from penetrating the first side plate 22 and the second side plate 23. In addition, the first side plate 22 and the second side plate 23 can also effectively prevent the energy storage converter 10 between them from bulging and deforming and affecting the energy storage converters 10 in adjacent rows.

[0218] The energy storage cabinet 80 also includes one or more rows of battery packs, with multiple battery packs in each row stacked along the height of the energy storage cabinet 80; each row of battery packs includes at least one battery cluster, and each battery cluster includes multiple stacked battery packs 82.

[0219] Each row of battery packs corresponds to a row of energy storage converters, and each row of battery packs and corresponding energy storage converters are electrically connected. Each row of energy storage converters is used to convert the power output of the corresponding row of battery packs. Each row of battery packs and corresponding row of energy storage converters are distributed along the height of the energy storage cabinet 80, for example, each row of battery packs is located above or below the corresponding row of energy storage converters. Each group of battery clusters in each row of battery packs is electrically connected to one of the energy storage converters 10 in the corresponding row of energy storage converters. Each energy storage converter 10 is used to convert the power output of the corresponding battery cluster in the corresponding row of battery packs, that is, the input terminal of each energy storage converter 10 is electrically connected to the output terminal of the corresponding battery cluster in the corresponding row of battery packs.

[0220] In the energy storage cabinet 80, the arrangement direction of the multi-row energy storage converters is the same as the arrangement direction of the multi-row battery packs; for example, the multi-row energy storage converters and the multi-row battery packs are distributed along the length direction of the energy storage cabinet 80, or they can be distributed along the width direction of the energy storage cabinet 80.

[0221] Heat dissipation holes 27 can also be provided on the side plates, that is, heat dissipation holes 27 are provided on both the first side plate 22 and the second side plate 23 to facilitate the heat dissipation of the energy storage converter 10.

[0222] The arrangement of the guide rails 24, positioning pieces 25, and stop portions 26 on the first side plate 22 and the second side plate 23 is the same as described above. The connection methods between the first side plate 22 and the second side plate 23 and the limiting plate 60 are also the same as described above, so they will not be repeated here.

[0223] This application embodiment also provides an energy storage cabinet, which includes a battery cluster and an energy storage converter 10. The battery cluster includes multiple battery packs 82 stacked together, for example, the multiple battery packs 82 of the battery cluster are stacked along the height direction of the energy storage cabinet 80. The energy storage converter 10 is used to perform power conversion on the electrical energy output by the battery cluster. The energy storage converter 10 and the battery cluster are arranged along the height direction of the energy storage cabinet 80, for example, the battery cluster can be located above or below the energy storage converter 10.

[0224] The energy storage cabinet 80 also includes a partition 21 and an AC busbar 81. The partition 21 is located on the back side of the energy storage converter 10, and a port 12 is provided on the back side of the energy storage converter 10. A conductive busbar 40 is provided on the surface of the partition 21 facing the energy storage converter 10, and the port 12 is plugged into the conductive busbar 40. The AC busbar 81 is located on the back side of the energy storage converter 10, and the partition 21 is located between the back side of the energy storage converter 10 and the AC busbar 81. The conductive busbar 40 passes through the partition 21 and is electrically connected to the AC busbar 81.

[0225] The partition 21 serves two purposes: firstly, it provides fixed support for the busbar 40; secondly, it effectively blocks debris generated by the explosion of the energy storage converter 10, preventing damage to the AC busbar 81 on the other side of the partition 21; and thirdly, its plate-like structure prevents debris from penetrating the partition 21. Furthermore, the partition 21 also prevents the AC busbar 81 on the other side of the partition 21 from being affected when the energy storage converter 10 bulges and deforms due to the explosion. For example, it can prevent the bulging converter from... The baffle 21 can also block the explosive gas flow from the explosion vent and flow to the baffle 21, thus blocking the explosive gas flow on the side of the baffle 21 facing the energy storage converter 10, and preventing or reducing the explosive gas flow to the other side of the baffle 21, so as to impact and affect the AC busbar 81 on the other side of the baffle 21; and the baffle 21 with plate structure can withstand the impact of explosive gas flow relatively well.

[0226] The energy storage cabinet 80 includes one or more rows of battery packs and one or more rows of energy storage converters. Multiple battery packs in each row are stacked along the height of the energy storage cabinet 80, and each row of battery packs includes at least one set of battery clusters. Each row of energy storage converters includes one or more energy storage converters 10, and the multiple energy storage converters 10 in each row are distributed along the height of the energy storage cabinet 80. Each row of battery packs corresponds to one row of energy storage converters, and each row of battery packs and its corresponding row of energy storage converters are distributed along the height of the energy storage cabinet 80; for example, each row of battery packs is located above or below its corresponding row of energy storage converters. A partition 21 is provided on the back side of each row of energy storage converters, and one or more sets of conductive bars 40 are provided on the partition 21. Each set of conductive bars 40 on the partition 21 is plugged into and connected to the port 12 of one of the energy storage converters 10 in the corresponding row of energy storage converters.

[0227] The arrangement of the conductive busbar 40 and the protective components on the partition 21 are the same as those described above, so they will not be repeated here.

[0228] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An energy storage cabinet, characterized in that, The energy storage cabinet includes a battery cluster and an energy storage converter. The battery cluster includes multiple battery packs stacked together, and the energy storage converter is used to perform power conversion on the electrical energy output by the battery cluster. The energy storage converter and the battery cluster are arranged along the height direction of the energy storage cabinet. The energy storage converter includes a housing and power devices. The power devices are disposed inside the housing. Multiple crossbeams are arranged between the housing and the battery cluster, and the multiple crossbeams are spaced apart.

2. The energy storage cabinet according to claim 1, characterized in that, The energy storage cabinet includes one or more rows of battery packs and one or more rows of energy storage converters. Each row of battery packs includes at least one set of the battery clusters, and each row of energy storage converters includes at least one of the energy storage converters. Each row of battery packs and one row of energy storage converters are corresponding and electrically connected. Each row of battery packs and the corresponding row of energy storage converters are distributed along the height direction of the energy storage cabinet. Each of the energy storage converters has an explosion vent on its side, and the explosion vent is covered with an explosion vent plate. Each row of energy storage converters is provided with side plates on opposite sides along the height direction perpendicular to the energy storage cabinet, and the explosion vent of each energy storage converter is provided opposite to the side plate.

3. The energy storage cabinet according to claim 2, characterized in that, The side plate is provided with heat dissipation holes.

4. The energy storage cabinet according to any one of claims 1 to 3, characterized in that, The energy storage cabinet includes a partition and an AC busbar, with the partition located between the back of the energy storage converter and the AC busbar. The surface of the partition facing the energy storage converter is provided with a conductive busbar, and the back of the energy storage converter is provided with a port, which is plugged into the conductive busbar; Multiple sets of the conductive busbars pass through the partition and are electrically connected to the AC busbar.

5. The energy storage cabinet according to claim 4, characterized in that, The partition is provided with a protective component, which is arranged around the outer periphery of the conductive busbar.

6. The energy storage cabinet according to claim 4 or 5, characterized in that, The side plates on both sides of any one energy storage converter are the first side plate and the second side plate, respectively, and both the first side plate and the second side plate are connected to the partition plate; Each row of battery packs is located above a corresponding row of energy storage converters, and the two ends of the plurality of crossbeams above each row of energy storage converters are respectively connected to the first side plate and the second side plate; or Each battery pack is located below a corresponding row of energy storage converters, and the two ends of the plurality of crossbeams below each row of energy storage converters are respectively connected to the first side plate and the second side plate.

7. The energy storage cabinet according to claim 6, characterized in that, The energy storage cabinet also includes a multi-row cluster control box, which is electrically connected to the multi-row energy storage converter in a one-to-one correspondence. Each cluster control box and a corresponding connected row of energy storage converters are arranged between the first side plate and the second side plate.

8. The energy storage cabinet according to claim 6 or 7, characterized in that, The energy storage cabinet also includes a support component, and the energy storage converter is mounted on the support component; Guide rails are provided on both the first side plate and the second side plate. The guide rails extend along the arrangement direction of the energy storage converter and the partition plate, and the support member is slidably disposed on the guide rails.

9. The energy storage cabinet according to claim 8, characterized in that, A positioning piece is provided on the plate surface of at least one of the first side plate and the second side plate facing the energy storage converter; Along the extension direction of the guide rail, the positioning piece is close to the partition; At least one of the first side plate and the second side plate has a gap with the support member, and the positioning piece is disposed in the gap.

10. The energy storage cabinet according to claim 8 or 9, characterized in that, At least one of the first side plate and the second side plate has a stop portion on its plate surface facing the energy storage converter; The surface of the support member facing the energy storage converter is provided with a mating part, and the stop part abuts against the mating part; The contact surfaces of the stop and the mating parts are set at an acute angle to the extension direction of the guide rail.

11. The energy storage cabinet according to claim 10, characterized in that, Along the extension direction of the guide rail, at least one of the first side plate and the second side plate is provided with a plurality of the stop portions on the plate surface facing the energy storage converter, and the support member is provided with a plurality of the mating portions on the surface facing the energy storage converter, with each stop portion abutting against a mating portion. The distance between each of the stop portions and the surface of the support member facing the energy storage converter along the height direction of the energy storage cabinet is a first distance. Along the sliding direction of the support member, the first spacing between the plurality of stops on the same side plate gradually decreases.

12. The energy storage cabinet according to any one of claims 8 to 11, characterized in that, The energy storage cabinet also includes a limiting plate, which is detachably connected to the first side plate or the second side plate, and the limiting plate is detachably connected to the end of the support member that is away from the partition.

13. The energy storage cabinet according to any one of claims 8 to 12, characterized in that, The support component includes multiple support beams spaced apart, and the energy storage converter is mounted on the support beams.

14. The energy storage cabinet according to claim 13, characterized in that, Along the arrangement direction of the first side plate and the second side plate, both sides of the support member have support plates; both ends of each support beam are fixedly connected to the two support plates respectively; The support plate is provided with a step, and one surface of the plurality of support beams is flush with the step surface.

15. The energy storage cabinet according to any one of claims 8 to 14, characterized in that, The energy storage cabinet includes multiple first connecting beams, and the two ends of each first connecting beam are fixedly connected to the first side plate and the second side plate, respectively. The plurality of first connecting beams are located between the support and the bottom wall of the energy storage cabinet.

16. An energy storage cabinet, characterized in that, The energy storage cabinet includes a battery cluster and an energy storage converter. The battery cluster includes multiple battery packs stacked together, and the energy storage converter is used to perform power conversion on the electrical energy output by the battery cluster. The energy storage converter and the battery cluster are arranged along the height direction of the energy storage cabinet. The energy storage converter includes a housing and power devices. The power devices are disposed inside the housing. A protective plate is provided between the housing and the battery cluster. The protective plate has heat dissipation holes.

17. An energy storage cabinet, characterized in that, The energy storage cabinet includes one or more rows of battery packs and one or more rows of energy storage converters. Each row of battery packs includes at least one set of the battery clusters, and each row of energy storage converters includes at least one of the energy storage converters. Each row of battery packs and one row of energy storage converters are corresponding and electrically connected. Each row of energy storage converters is used to perform power conversion on the electrical energy output from the corresponding row of battery packs. Each row of battery packs and the corresponding row of energy storage converters are distributed along the height direction of the energy storage cabinet. The energy storage converter includes a housing and power devices, with the power devices disposed within the housing; Each of the energy storage converters has an explosion vent on its side, and the explosion vent is covered with an explosion vent plate. Each row of energy storage converters is provided with side plates on opposite sides along the height direction perpendicular to the energy storage cabinet, and the explosion vent of each energy storage converter is provided opposite to the side plate.

18. An energy storage cabinet, characterized in that, The energy storage cabinet includes a battery cluster and an energy storage converter. The battery cluster includes multiple battery packs stacked together. The energy storage converter is used to convert the power output of the battery cluster. The energy storage converter and the battery cluster are arranged along the height direction of the energy storage cabinet. The energy storage cabinet includes a partition and an AC busbar, with the partition located between the back of the energy storage converter and the AC busbar. The surface of the partition facing the energy storage converter is provided with a conductive busbar, and the back of the energy storage converter is provided with a port, which is plugged into the conductive busbar; The conductive busbar passes through the partition and is electrically connected to the AC busbar.

19. An energy storage system, characterized in that, The device includes a prefabricated substation and an energy storage cabinet as described in any one of claims 1 to 18, wherein one end of the AC busbar of the energy storage cabinet extends outside the energy storage cabinet to connect to the low-voltage interface of the prefabricated substation; the prefabricated substation is used to boost the voltage of the electrical energy received at the low-voltage interface.

20. The energy storage system according to claim 19, characterized in that, The energy storage system includes a plurality of energy storage cabinets, which are arranged at intervals along the length of the energy storage cabinets. In any two adjacent energy storage cabinets, one energy storage cabinet has a first opening on its side wall facing the other energy storage cabinet, and one end of the AC busbar of one energy storage cabinet passes through the first opening to be connected in series with the AC busbar of the other energy storage cabinet. The AC busbar of the energy storage cabinet at the end of the series path of the multiple energy storage cabinets is used to connect to the low-voltage interface of the prefabricated substation.

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