Energy storage container and energy storage system

Abstract

The utility model discloses an energy storage container and an energy storage system, and belongs to the technical field of energy storage. The energy storage container comprises a first container body, a confluence cabinet and an energy storage module, the first container body is provided with a first direction and a second direction intersecting with the first direction, and the first container body is provided with a first bin and a second bin which are arranged in a spaced mode in the first direction; the confluence cabinet is arranged in the first chamber; the energy storage module is arranged in the second chamber and is connected with the confluence cabinet; wherein the energy storage module comprises a plurality of battery modules which are sequentially arranged along a second direction, and the plurality of battery modules are connected in series; the battery module is provided with a first connecting end and a second connecting end which are opposite to each other in a first direction; and along the second direction, the second connecting ends of the adjacent battery modules are connected with each other or the first connecting ends of the adjacent battery modules are connected with each other. According to the invention, the plurality of battery modules are connected in series and then are connected with the confluence cabinet, so that the number of batteries in the energy storage container is increased, and the capacity in the energy storage container is increased.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of energy storage, and particularly relates to an energy storage container and an energy storage system. BACKGROUND

[0002] The energy storage container usually contains a plurality of battery units, and the required voltage and capacity are formed by the battery units; usually, the energy storage container contains a plurality of high-voltage boxes, the more high-voltage boxes, the larger the space occupied by the energy storage container, and the smaller the space of the battery units, thereby reducing the capacity in the energy storage container. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims to overcome the technical problem that the more high-voltage boxes in the energy storage container, the larger the space occupied by the energy storage container, and the capacity in the energy storage container is affected; another object of the utility model is to provide an energy storage system.

[0004] TECHNICAL SCHEME: The utility model provides an energy storage container, which comprises a first box body, the first box body has a first direction and a second direction intersecting with the first direction, the first box body has a first chamber and a second chamber arranged at intervals in the first direction;

[0005] A busbar cabinet is arranged in the first chamber;

[0006] An energy storage module is arranged in the second chamber, and the energy storage module is connected with the busbar cabinet;

[0007] The energy storage module comprises a plurality of battery modules arranged in sequence in the second direction, and the plurality of battery modules are connected in series; the battery module has opposite first and second connecting ends in the first direction; in the second direction, the second connecting ends of adjacent battery modules are connected with each other or the first connecting ends of adjacent battery modules are connected with each other.

[0008] In some embodiments, in the second direction, the first box body comprises a bottom plate and a top plate opposite to the bottom plate;

[0009] The first connecting end of the battery module closest to the bottom plate is connected with the busbar cabinet, and the first connecting end of the battery module closest to the top plate is connected with the busbar cabinet; or

[0010] The first connecting end of the battery module closest to the bottom plate is connected with the busbar cabinet, and the second connecting end of the battery module closest to the top plate is connected with the busbar cabinet.

[0011] In some embodiments, the first box body further has a third direction intersecting with the first direction and the second direction;

[0012] The battery module comprises a plurality of battery units arranged in sequence in the first direction and connected in series.

[0013] The battery unit comprises:

[0014] a tray;

[0015] a plurality of battery modules connected to one side of the tray, the plurality of battery modules being connected in series and arranged in two columns along a third direction, wherein a first battery module and a last battery module in series are connected in series with adjacent battery units, respectively.

[0016] In the battery module, the first electrode of the first battery module in the first battery unit in series is configured as a first connection end, and the second electrode of the last battery module in the last battery unit in series is configured as a second connection end.

[0017] In some embodiments, the battery module comprises:

[0018] a second box;

[0019] a plurality of battery cells arranged in sequence along the third direction in the second box, the plurality of battery cells being connected in parallel.

[0020] In some embodiments, the battery unit further comprises a first collection pipe;

[0021] The battery module further comprises an exhaust pipe joint, the exhaust pipe joint being in communication with the interior of the second box;

[0022] In the battery unit, each exhaust pipe joint is located between the two columns of battery modules, and the interior of the second box is in communication with the first collection pipe through the exhaust pipe joint.

[0023] In some embodiments, along the first direction, the second box comprises a first panel and a second panel;

[0024] The second box further comprises an explosion-proof valve, the explosion-proof valve being provided on the first panel or the second panel.

[0025] In some embodiments, the energy storage container further comprises:

[0026] a gas treatment device, the gas treatment device being provided in the first compartment;

[0027] a collection main pipe, the collection main pipe being in communication with the gas treatment device and the first compartment;

[0028] a plurality of second collection pipes, each corresponding to each column of battery units along the second direction, each first collection pipe in each column of battery units being in communication with the collection main pipe through the corresponding second collection pipe;

[0029] an exhaust pipe, the gas treatment device being in communication with the outside of the first box through the exhaust pipe.

[0030] In some embodiments, the first box body has a third chamber spaced from the first chamber in the third direction;

[0031] The energy storage container further comprises a water machine module arranged in the third chamber.

[0032] In some embodiments, the top plate is an explosion-proof plate.

[0033] Correspondingly, the application also provides an energy storage system comprising the energy storage container as described above.

[0034] Beneficial effects: the application provides an energy storage container, which comprises a first box body having a first direction and a second direction intersecting the first direction, the first box body having a first chamber and a second chamber arranged in the first direction; a busbar cabinet arranged in the first chamber; an energy storage module arranged in the second chamber, the energy storage module being connected with the busbar cabinet; wherein the energy storage module comprises a plurality of battery modules arranged in the second direction, the plurality of battery modules being connected in series; the battery module has opposite first and second connecting ends in the first direction; in the second direction, the second connecting ends of adjacent battery modules are connected with each other or the first connecting ends of adjacent battery modules are connected with each other. In the application, the plurality of battery modules are connected in series and then connected with the busbar cabinet, thereby reducing the space occupied by the high-voltage box, increasing the space for the batteries in the energy storage container, increasing the number of batteries in the energy storage container, and further increasing the capacity of the energy storage container.

[0035] The energy storage system of the application comprises the energy storage container as described above. Therefore, it can have all the technical features and effects of the energy storage container as described above, which will not be described here. BRIEF DESCRIPTION OF DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative effort.

[0037] Figure 1 A schematic diagram of a front view cross-sectional structure of the energy storage container provided by the embodiments of the application;

[0038] Figure 2 Another schematic diagram of a top view cross-sectional structure of the energy storage container provided by the embodiments of the application;

[0039] Figure 3 A schematic diagram of an example structure of a battery unit provided by the embodiments of the application;

[0040] Figure 4 An example structure schematic of a battery module provided for embodiments of the present application;

[0041] Figure 5 An example explosion structure schematic of a battery module provided for embodiments of the present application;

[0042] Legend: 1, first box; 2, busbar cabinet; 3, energy storage module; 4, gas treatment device; 5, exhaust pipe; 6, water machine module; 7, copper bar; 8, vertical beam; 10, first chamber; 20, second chamber; 30, bottom plate; 40, top plate; 50, third chamber; 60, battery module; 61, first connecting end; 62, second connecting end; 63, battery unit; 631, tray; 632, battery module; 6321, battery cell; 6322, second box; 6323, first panel; 6324, second panel; 6325, first electrode current collector; 6326, second electrode current collector; 633, first collecting pipe; 634, exhaust pipe joint; 635, explosion-proof valve. DETAILED DESCRIPTION

[0043] The technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person skilled in the art without creative labor fall within the scope of protection of the present application.

[0044] In the description of the present application, it should be understood that the specific embodiments described herein are only used to illustrate and explain the present application, and are not used to limit the present application. The orientations or positional relationships indicated by the terms "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer", and the like are based on the orientations or positional relationships shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" are only used for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more features.

[0045] The application provides an energy storage container and an energy storage system, which are described in detail below. It should be noted that the description order of the following embodiments is not limited as the preferred order of the embodiments of the application. Moreover, the description of each embodiment in the following embodiments has its own focus, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0046] As a preamble of the embodiments of the application, the existing energy storage container adopts a 20-foot prefabricated cabin with the length, width and height of 6058mm*2438mm*2896mm. The current 20-foot prefabricated cabin product is usually based on a large-capacity 500Ah+ battery cell and adopts a 4-column 8-layer / 9-layer large packaging layout. The charging capacity can only be about 6.5MWh. It should be noted that the more charging capacity of the energy storage container, the more the system cost is reduced, and the less the land area is occupied. Therefore, in the standard 20-foot container, the charging capacity is as large as possible, so as to reduce the cost and the land area. The current existing 20-foot container system usually has multiple battery clusters in parallel connection through a busbar cabinet, and multiple high-voltage boxes are needed. However, the high-voltage box has a height of more than 200mm and needs to be arranged at the bottom or top of the battery cluster, which will occupy the space of nearly one layer of battery, resulting in insufficient space utilization of the container and low charging capacity. In addition, the 1500V system usually has a single cluster with a string number of less than or equal to 416, multiple clusters in parallel connection, a large number of high-voltage boxes, a large amount of BMS (battery management system) acquisition, and a need for three-level BMS management, which is high in cost. Moreover, the busbar cabinet has multiple busbar branches, large size and large space occupation. In addition, the water chiller module has a large power after the increase of the charging capacity, which will cause the water chiller module to be externally arranged, which is not conducive to transportation and other problems.

[0047] Therefore, the embodiments of the application provide an energy storage container, which aims to solve at least one of the above technical problems.

[0048] Please refer to Figure 1 As shown in the accompanying drawings, the embodiments of the application provide an energy storage container, which comprises: a first box body 1, the first box body 1 has a first direction X and a second direction Y intersecting the first direction X, and the first box body 1 has a first chamber 10 and a second chamber 20 arranged at intervals along the first direction X; a busbar cabinet 2 arranged in the first chamber 10; an energy storage module 3 arranged in the second chamber 20, and the energy storage module 3 is connected with the busbar cabinet 2; wherein the energy storage module 3 comprises a plurality of battery modules 60 arranged in sequence along the second direction Y, and the plurality of battery modules 60 are connected in series; the battery module 60 has opposite first and second connecting ends 61 and 62 in the first direction X; along the second direction Y, the second connecting ends 62 between adjacent battery modules 60 are connected with each other or the first connecting ends 61 between adjacent battery modules 60 are connected with each other.

[0049] It needs to be understood that the first container 1 in the energy storage container is divided into two areas, i.e. the first chamber 10 and the second chamber 20 along the first direction X for placing the energy storage module 3 and the busbar cabinet 2 respectively, the energy storage module 3 includes a plurality of battery modules 60 arranged in sequence along the second direction Y, the plurality of battery modules 60 are connected in series and then connected with the busbar cabinet 2, which reduces the space occupied by the high-voltage box, increases the space of the battery in the energy storage container, so that the number of batteries in the energy storage container is increased, and then the capacity of the energy storage container is increased to improve the utilization rate of the container space, and the plurality of battery modules 60 are connected in series and then connected with the busbar cabinet 2, which reduces the collection amount of the BMS, and then reduces the data processing demand and system cost of the BMS; in addition, the first connecting end 61 is close to one end of the first chamber 10, and the second connecting end 62 is away from one end of the first chamber 10, along the second direction Y, the second connecting ends 62 between adjacent battery modules 60 are connected with each other or the first connecting ends 61 between adjacent battery modules 60 are connected with each other, which represents the connection mode of the series connection process of the plurality of battery modules 60, and in the entire series connection process, there are two cases of the second connecting ends 62 being connected with each other and the first connecting ends 61 being connected with each other, for example, the second connecting end 62 of the first battery module 60 along the second direction Y is connected with the second connecting end 62 of the second battery module 60, then in order to connect the plurality of battery modules 60 in series, the first connecting end 61 of the second battery module 60 is connected with the first connecting end 61 of the third battery module 60, and so on, which constitutes a similar snake-shaped connection mode, which can significantly reduce the number of connecting lines, so that the wiring of the entire battery system is more simple and clear, and the risk of short circuit, open circuit and other faults caused by complex wiring is reduced, and the stability and reliability of the system are improved; in addition, the series connection mode of the battery modules 60 in the application allows the batteries to be arranged more compactly in space, thereby improving the space utilization rate of the container, and making the connection points between each battery module 60 more clear, facilitating daily maintenance and troubleshooting. In addition, it needs to be noted that the first chamber 10 and the second chamber 20 can be separated by a layer plate, but the first chamber 10 and the second chamber 20 are not sealed, when the energy storage module 3 is connected with the busbar cabinet 2, it means that the layer plate separating the first chamber 10 and the second chamber 20 has a corresponding communication space to facilitate the connection of the two, and can have other communication spaces according to actual scheme requirements. It also needs to be noted that in the application, based on the series connection of each battery module 60, the high-voltage box can be cancelled, and the BMS management system of the battery cluster can be integrated into the busbar cabinet.

[0050] Please refer to Figure 1As shown, in some embodiments, along the second direction Y, the first box 1 comprises a bottom plate 30 and a top plate 40 opposite to the bottom plate 30; the first connecting end 61 of the battery module 60 closest to the bottom plate 30 is connected with the busbar cabinet 2, and the first connecting end 61 of the battery module 60 closest to the top plate 40 is connected with the busbar cabinet 2; or the first connecting end 61 of the battery module 60 closest to the bottom plate 30 is connected with the busbar cabinet 2, and the second connecting end 62 of the battery module 60 closest to the top plate 40 is connected with the busbar cabinet 2.

[0051] It should be understood that the first connecting end 61 and the second connecting end 62 can be configured as positive or negative based on the line connection relationship setting; for example, the first connecting end 61 of the battery module 60 closest to the bottom plate 30 is connected with the busbar cabinet 2, and the first connecting end 61 of the battery module 60 closest to the top plate 40 is connected with the busbar cabinet 2, if the first connecting end 61 of the battery module 60 closest to the bottom plate 30 is positive, then the first connecting end 61 of the battery module 60 closest to the top plate 40 is negative; or the first connecting end 61 of the battery module 60 closest to the bottom plate 30 is connected with the busbar cabinet 2, and the second connecting end 62 of the battery module 60 closest to the top plate 40 is connected with the busbar cabinet 2, if the first connecting end 61 of the battery module 60 closest to the bottom plate 30 is positive, then the second connecting end 62 of the battery module 60 closest to the top plate 40 is negative; in the series connection of the battery module 60, the second connecting ends 62 between adjacent battery modules 60 are connected with each other, then one of the second connecting ends 62 is positive, and the other second connecting end 62 is negative; the first connecting ends 61 between adjacent battery modules 60 are connected with each other, then one of the first connecting ends 61 is positive, and the other first connecting end 61 is negative, by connecting the positive and negative with each other, to avoid reverse connection or short circuit and other problems. It should be understood that in the present application, after the plurality of battery modules 60 are connected in series, the plurality of battery modules 60 are connected in series with the busbar cabinet 2, so that the busbar cabinet 2 can perform electrical energy connection and distribution, safety protection, monitoring and control, etc. on the energy storage module 3.

[0052] Please refer to Figure 2 and Figure 3As shown, in some embodiments, the first cabinet 1 also has a third direction Z intersecting with the first direction X and the second direction Y; the battery module 60 includes a plurality of battery units 63 arranged in sequence along the first direction X and connected in series; the battery unit 63 includes a tray 631; a plurality of battery modules 632 connected to one side of the tray 631, the plurality of battery modules 632 are connected in series, and arranged in two columns along the third direction Z, wherein the first battery module 632 and the last battery module 632 in series are respectively connected in series with adjacent battery units 63; in the battery module 60, the first electrode of the first battery module 632 in the first battery unit 63 in series is configured as the first connection end 61, and the second electrode of the last battery module 632 in the last battery unit 63 in series is configured as the second connection end 62.

[0053] It should be understood that the first electrode can be configured as a positive electrode or a negative electrode, if the first electrode is configured as a positive electrode, the second electrode is configured as a negative electrode, if the first electrode is configured as a negative electrode, the second electrode is configured as a positive electrode; the present application connects a plurality of battery modules 632 in series, along the first direction X, the first battery module 632 and the last battery module 632 in series in the battery unit 63 are respectively connected in series with adjacent battery units 63, so that a plurality of battery units 63 are arranged in sequence and connected in series along the first direction X; then, the first electrode of the first battery module 632 in the first battery unit 63 in series of the battery module 60 is configured as the first connection end 61, and the second electrode of the last battery module 632 in the last battery unit 63 in series is configured as the second connection end 62, so that the whole energy storage module 3 is in series structure, and then all battery modules 632 and battery units 63 are connected in series with the busbar cabinet 2, so that the busbar cabinet 2 can connect, distribute, protect, monitor and control the energy storage module 3, etc. In the present application, the battery unit 63 is divided into a plurality of battery modules 632 on the tray 631, the battery module 632 and the tray 631 can be fixed by adhesive, and then the tray 631 does not need a separate cover, so that the height occupied by a single battery unit 63 is reduced, combined with the system not needing multiple clusters in parallel and high-voltage box occupying space, so that the space of the battery module 60 in the second direction Y can be increased; and the tray 631 in the first compartment 10 can be welded on the vertical beam extending along the second direction Y and connected with the bottom plate 30 and the top plate 40, the number of vertical beams can be multiple and arranged at different positions in the first compartment 10 and welded with the tray 631, so that the battery unit 63 is more stable. The tray 631 can adopt a cold plate tray, which is beneficial to heat dissipation of the battery unit 63, and the composition of the battery module 632 and the cold plate tray can facilitate disassembly and replacement when the battery module 632 on the tray 631 is damaged.

[0054] Please refer to Figure 3As shown, in some embodiments, the plurality of battery modules 632 are connected in series and arranged in two columns along the third direction Z, which can be that the battery modules 632 in each column are connected in series, wherein the last battery module 632 in one column is connected with the first battery module 632 in another column, and the two battery modules 632 in adjacent series are connected by the positive electrode and the negative electrode, and the two battery modules 632 adjacent in the third direction Z in each column are connected by the same side to form a series connection in a similar snake shape to avoid reverse connection problems and make the wiring of the entire battery system more concise and clear. For example, the second electrode of the first battery module 632 in one column is connected with the first electrode of the second battery module 632 in series, and then the first electrode of the second battery module 632 is connected with the second electrode of the first battery module 632 on the same side of the battery module 632, and so on, to form a series connection in a similar snake shape, wherein the two battery modules 632 in adjacent series in each column can be connected by a copper bar 7. Please refer to Figure 4 and Figure 5 As shown, further, in some embodiments, the battery module 632 comprises: a second box body 6322; a plurality of battery cells 6321 arranged in the second box body 6322 along the third direction Z in sequence, and the plurality of battery cells 6321 are connected in parallel.

[0055] It needs to be understood that the plurality of battery cells 6321 are connected in parallel, which increases the total capacity of the battery module 632, thereby providing more electrical energy storage capacity. In addition, through the second box body 6322, the tray 631 does not need a top cover, which reduces the height of the battery module 632, thereby improving the space utilization of the container. In addition, it needs to be pointed out that the battery module 632 also includes a first electrode current collector 6325 and a second electrode current collector 6326, both of which are connected to other devices through the pole by passing through the second box body 6322; it needs to be pointed out that the large copper bar connected in series between the battery modules 632 on the tray 631 is partially exposed at the connection between the copper bar 7 and the pole on the battery module 632. In order to prevent condensation from causing poor insulation or poor voltage resistance, the connection needs to be protected and treated, and the battery module 632 also includes an electrode insulation bushing, which is provided on the second box body 6322 and is sleeved around the pole. The electrode insulation bushing provides electrical insulation and prevents current leakage or short circuit to improve the reliability and safety of the battery, and the pole connection is coated with glue for protection. In addition, the battery module 632 also includes two epoxy plates, which are respectively placed between the first battery cell 6321 and the last battery cell 6321 in the plurality of battery cells 6321 stacked in the third direction Z and the second box body 6322. The epoxy plate provides important safety protection. Installing the epoxy plate on the side of the energy storage container or battery pack can effectively isolate the battery components or electrical elements, prevent electrical faults and short circuit phenomena, and provide stable support for other components, enhancing the structural stability of the entire system.

[0056] Please refer to Figure 4 and Figure 5 Further, in some embodiments, along the first direction X, the second box body 6322 includes a first panel 6323 and a second panel 6324; the second box body 6322 also includes an explosion-proof valve 635 provided on the first panel 6323 or the second panel 6324. Specifically, the first panel 6323 or the second panel 6324 has a through hole, and the explosion-proof valve 635 is arranged in the corresponding through hole and connected with the first panel 6323 or the second panel 6324. The explosion-proof valve 635 is used to release the pressure in the second box body 6322, thereby improving the safety of the battery module 632.

[0057] Please refer to Figure 3As shown, in addition, in some embodiments, the battery unit 63 further comprises a first collecting pipe 633; the battery module 632 further comprises an exhaust pipe joint 634, which is in communication with the inside of the second box 6322; in the battery unit 63, each exhaust pipe joint 634 is located between two rows of battery modules 632, and the inside of the second box 6322 is in communication with the first collecting pipe 633 through the exhaust pipe joint 634. It should be understood that, since each exhaust pipe joint 634 is located between two rows of battery modules 632, the first collecting pipe 633 in the battery unit 63 is also located between two rows of battery modules 632, and the inside of the second box 6322 is in communication with the first collecting pipe 633 through the exhaust pipe joint 634, so that the gas can be discharged through the first collecting pipe 633, thereby improving the safety of the battery module 632.

[0058] As shown in FIG. 1, the energy storage container 1 comprises a first chamber 10, a second chamber 20, and a first box 1. The first chamber 10 is located in the first box 1, and the second chamber 20 is located in the first box 1. The first chamber 10 comprises a plurality of battery units 63 arranged in a plurality of rows along a first direction X. Each battery unit 63 comprises a plurality of battery modules 632 arranged in a plurality of rows along a second direction Y. Each battery module 632 comprises a plurality of battery cells 6321 connected in parallel. Figure 1 Figure 2 As shown in FIG. 1, the energy storage container 1 comprises a first chamber 10, a second chamber 20, and a first box 1. The first chamber 10 is located in the first box 1, and the second chamber 20 is located in the first box 1. The first chamber 10 comprises a plurality of battery units 63 arranged in a plurality of rows along a first direction X. Each battery unit 63 comprises a plurality of battery modules 632 arranged in a plurality of rows along a second direction Y. Each battery module 632 comprises a plurality of battery cells 6321 connected in parallel.

[0059] It should be understood that, the battery module 632 is connected in parallel by a plurality of battery cells 6321 to form a large-capacity battery module 632, which greatly reduces the sampling cost; in addition, the design of the large-capacity battery module 632 connected in parallel by a plurality of battery cells 6321 is relatively easy to control the thermal runaway in the independent unit, has high safety, and the number of independent units is relatively small, in addition, each battery module 632 is provided with an exhaust and explosion-proof design, the gas treatment device 4 filters and discharges the exhaust gas outside the container through the exhaust port, so that each module is provided with a thermal runaway gas collecting pipeline, and the structure is simple. The gas treatment device 4 can also monitor the flammable gas in the second chamber 20, which can be monitored by setting a sensor in the second chamber 20, when the flammable gas reaches the dangerous limit value, the gas treatment device 4 receives the sensor monitoring result and can give an early warning or trigger fire fighting, etc., to prevent safety problems caused by flammable gas.

[0060] As shown in FIG. 1, the energy storage container 1 comprises a first chamber 10, a second chamber 20, and a first box 1. The first chamber 10 is located in the first box 1, and the second chamber 20 is located in the first box 1. The first chamber 10 comprises a plurality of battery units 63 arranged in a plurality of rows along a first direction X. Each battery unit 63 comprises a plurality of battery modules 632 arranged in a plurality of rows along a second direction Y. Each battery module 632 comprises a plurality of battery cells 6321 connected in parallel. Figure 1 Figure 2 ​​As shown, in some embodiments, the first box 1 has a third compartment 50 spaced apart from the first compartment 10 in the third direction Z; the energy storage container further comprises a water machine module 6 arranged in the third compartment 50. It should be understood that the third compartment 50 can be spaced apart from the first compartment 10 and the second compartment 20 respectively, and can have a communication space with the first compartment 10 and the second compartment 20 respectively according to actual scheme requirements; the water machine module 6 is mainly used for heat management and temperature control to prevent the container from overheating and improve the life and performance of the battery. In addition, it should be noted that in order to prevent condensation from causing poor insulation or voltage resistance of the battery, the water machine module 6 can be provided with a dehumidification function or a dehumidification device is additionally arranged in the second compartment 20.

[0061] In addition, in some embodiments, when the battery module 632 has excessive heat runaway pressure, the explosion-proof valve 635 on the battery module 632 will open to exhaust air into the container, which will cause excessive pressure in the container, in order to prevent the container from exploding; in some embodiments, the top plate 40 is an explosion-proof plate.

[0062] For example, please refer to Figures 1 to 5As shown, the size (length * width * height) of the battery cell 6321 is 500 mm * 215 mm * 53 mm, the capacity is 770 Ah, the power of the single large-capacity parallel battery module 632 is 3.2 * 770 * 8 = 19.712 kwh, and the size (length * width * height) of the battery module 632 is 552.5 mm * 450 mm * 222 mm, wherein the size does not include the size of the terminal post, the explosion-proof valve 635 and the exhaust port; the tray 631 in the battery unit 63 adopts a 2-column layout and is composed of 10 super large-capacity battery modules 632, and the size of the battery unit 63 is 2260 mm * 1200 mm * 233 mm. Further, if the system is designed at 1500V, the number of battery cluster strings needs to be ≤416, and since the tray 631 does not need a separate upper cover, the height is reduced, and combined with the fact that multiple clusters are not needed in the present application, the space originally occupied by the high-voltage box can be used to arrange an additional layer of tray 631; the container system adopts a 4-column 10-layer layout, and the power of the energy storage module 3 is 4 * 10 * 1 * 19.712 = 7.885 MWh, and since all the battery modules 632 are connected in series, the first battery module 632 in series and the last battery module 632 in series lead the total positive and total negative of the entire energy storage module 3. For example, the battery units 63 arranged at the bottom layer of the first box body 1 are sequentially arranged as 1 to 4 along the first direction X, the battery units 63 arranged at the second-to-last layer are sequentially arranged as 5 to 8 along the direction opposite to the first direction X, and the like, and the series direction of all the battery units 63 is also connected according to this order. The battery units 63 arranged as 1 and 40 lead the total positive and total negative of the entire energy storage module 3, respectively. Specifically, the first battery module 632 in series in the battery unit 63 arranged as 1 and the last battery module 632 in series in the battery unit 63 arranged as 1 lead the total positive and total negative of the entire energy storage module 3, respectively. The plurality of first collecting pipes 633 of the 4-column battery unit 63 are connected through the corresponding second collecting pipe, that is, one second collecting pipe corresponds to each column, and the plurality of first collecting pipes 633 in each column are in communication with the corresponding second collecting pipe, and then the second collecting pipe is in communication with the collecting manifold, and finally connected to the gas treatment device 4.

[0063] In the present application, the design of the multi-cell parallel super-capacity battery module 632 greatly reduces the sampling cost. The design of the multi-cell parallel super-capacity battery module 632 is easier to control thermal runaway in an independent unit, has higher safety, and has fewer independent units. Each battery module 632 has a thermal runaway gas collection pipeline, which is easier to implement. When the battery module 632 on the tray 631 is damaged, it can be disassembled and replaced, and the system has low after-sales maintenance cost. In addition, the energy storage container adopts a single cluster design, and the battery unit 63 does not need to be individually sealed with a cover. The height is low, and the space saved is used for the arrangement of the battery unit 63, and the space utilization rate is extremely high. Compared with the current conventional maximum 6.5MWh system, the system increases the charging capacity by more than 20%, which further reduces the container system cost, and also reduces the land occupation area of the system by 20%, greatly improving the performance of the product.

[0064] The embodiment of the present application also provides an energy storage system, which comprises the energy storage container in the above embodiment. Therefore, all the technical features and technical effects of the energy storage container can be achieved, which will not be repeated here.

[0065] The above describes in detail the energy storage container and the energy storage system provided by the present application. The principles and implementation modes of the present application are described by applying specific examples. The above description of the embodiments is only used to help understand the method of the present application and its core idea. For those skilled in the art, according to the idea of the present application, the specific implementation mode and application range can be changed. In summary, the content of the specification should not be understood as a limitation of the present application.

Claims

1. An energy storage container, characterized by, The energy storage container comprises: a first box body having a first direction and a second direction intersecting with the first direction, the first box body having a first compartment and a second compartment arranged at intervals along the first direction; a busbar cabinet arranged in the first compartment; an energy storage module arranged in the second compartment, the energy storage module being connected with the busbar cabinet; wherein the energy storage module comprises a plurality of battery modules arranged in sequence along the second direction, and the plurality of battery modules are connected in series; the battery module has opposite first and second connecting ends in the first direction; along the second direction, the second connecting ends of adjacent battery modules are connected with each other or the first connecting ends of adjacent battery modules are connected with each other.

2. The energy storage container according to claim 1, wherein along the second direction, the first box body comprises a bottom plate and a top plate opposite to the bottom plate; the first connecting end of the battery module closest to the bottom plate is connected with the busbar cabinet, and the first connecting end of the battery module closest to the top plate is connected with the busbar cabinet; or the first connecting end of the battery module closest to the bottom plate is connected with the busbar cabinet, and the second connecting end of the battery module closest to the top plate is connected with the busbar cabinet.

3. The energy storage container according to claim 2, wherein the first box body further has a third direction intersecting with the first direction and the second direction; the battery module comprises a plurality of battery cells arranged in sequence along the first direction and connected in series; the battery cell comprises: a tray; a plurality of battery modules connected with one side of the tray, the plurality of battery modules being connected in series and arranged in two columns along the third direction, wherein the first battery module and the last battery module connected in series are connected with adjacent battery cells in series, respectively; in the battery module, the first electrode of the first battery module in the first battery cell connected in series is configured as the first connecting end, and the second electrode of the last battery module in the last battery cell connected in series is configured as the second connecting end.

4. The energy storage container according to claim 3, wherein the battery module comprises: a second box body; a plurality of battery cells arranged in sequence along the third direction inside the second box body, the plurality of battery cells being connected in parallel.

5. The energy storage container according to claim 4, wherein the battery cell further comprises a first collecting pipe; the battery module further comprises an exhaust pipe joint, the exhaust pipe joint being in communication with the inside of the second box body; in the battery cell, each exhaust pipe joint is located between the two columns of battery modules, and the inside of the second box body is in communication with the first collecting pipe through the exhaust pipe joint.

6. The energy storage container according to claim 4, wherein along the first direction, the second box body comprises a first panel and a second panel; the second box body further comprises an explosion-proof valve arranged on the first panel or the second panel.

7. The energy storage container according to claim 5, wherein ​ The energy storage container further comprises: a gas treatment device disposed in the first chamber; a collecting main pipe communicating the gas treatment device and the first chamber; a plurality of second collecting pipes corresponding to each column of the battery units along the second direction, each of the first collecting pipes in each column of the battery units being communicated with the collecting main pipe through a corresponding second collecting pipe; a discharge pipe through which the gas treatment device is communicated with the outside of the first box.

8. The energy storage container according to claim 7, wherein the first box has a third chamber spaced apart from the first chamber along the third direction; the energy storage container further comprises a water chiller module disposed in the third chamber.

9. The energy storage container according to claim 2, wherein the top plate is an explosion-proof plate.

10. An energy storage system characterized by, The energy storage container according to any one of claims 1 to 9.

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