Layout method of energy storage device and energy storage device

Abstract

The invention discloses a layout method of an energy storage device and the energy storage device. The layout method of the energy storage device comprises the steps that the internal space of a standardized box body is divided into a first cavity and a second cavity in the first direction; adjusting the sizes of the first cavity and the second cavity in the first direction, and reducing the size of the second cavity in the first direction to increase the size of the first cavity in the first direction; arranging a plurality of battery columns which are sequentially arranged in the first direction in the first cavity, and increasing the size of at least one battery column in the first direction and / or increasing the number of the battery columns so as to fully occupy the space of the first cavity in the first direction; a heat management module is arranged in the second cavity, and an electric control module is arranged at the bottom of the first cavity. According to the layout method of the energy storage device, the proportion of the first cavity in the internal space of the standardized box body is increased, so that the energy storage device has higher area energy density, and meanwhile, the space utilization rate is increased.

Description

Technical Field

[0001] This application relates to the layout method of energy storage devices and the technical field of energy storage devices, specifically to a layout method of energy storage devices and an energy storage device. Background Technology

[0002] With the rapid development of technology, electricity has become an indispensable energy source in people's production and daily life. To improve the smoothness of electricity supply and ensure the normal operation of production and daily life, energy storage devices are needed. As devices that cyclically store and release electrical energy, energy storage devices store electrical energy or supply the stored energy to electrical devices through charging or discharging. Energy storage devices are widely used in industrial power supply, household power supply, temporary power supply, mobile power supply, wind power generation, solar power generation, and energy storage power stations.

[0003] Existing energy storage devices typically use standardized enclosures for assembly and transportation. Since these standardized enclosures have fixed dimensions, how to fully utilize their internal space to increase the total capacity of the energy storage device within its standard dimensions and meet energy density requirements remains a technical challenge that requires continuous improvement in energy storage technology. Summary of the Invention

[0004] The purpose of this application is to provide a layout method and energy storage device that can make full use of the internal space of a standardized enclosure and improve the energy density of the energy storage device.

[0005] To achieve the objectives of this application, the following technical solution is provided: In a first aspect, this application provides a layout method for an energy storage device, the energy storage device being configured with a standardized enclosure, including: The internal space of the standardized box is divided into a first cavity and a second cavity along a first direction; Adjust the dimensions of the first cavity and the second cavity in the first direction, reducing the dimension of the second cavity in the first direction to increase the dimension of the first cavity in the first direction; A plurality of battery columns are arranged sequentially along the first direction in the first cavity, and the size of at least one of the battery columns in the first direction is increased and / or the number of the battery columns is increased to fill the space of the first cavity in the first direction. A thermal management module is configured in the second cavity, and an electronic control module is configured at the bottom of the first cavity; Wherein, the first direction is the length direction of the standardized box.

[0006] In one embodiment, adjusting the dimensions of the first cavity and the second cavity in the first direction includes: Reduce the size of the second cavity in the first direction to D1, and increase the size of the first cavity in the first direction to D2, satisfying: 380mm≤D1≤420mm, 5480mm≤D2≤5510mm.

[0007] In one embodiment, a plurality of battery rows arranged sequentially along the first direction are configured in the first cavity, and the size of at least one of the battery rows in the first direction is increased, including: Increase the size of the battery array in the first direction to D3, satisfying: 1230mm≤D3≤1400mm.

[0008] In one embodiment, a plurality of battery columns arranged sequentially along the first direction are configured in the first cavity. Increasing the number of battery columns includes increasing the number of N battery columns arranged sequentially along the first direction to N+1 battery columns.

[0009] In one embodiment, an electronic control module is disposed at the bottom of the first cavity, and the system further includes: A high-voltage unit, a power distribution unit, and a transfer unit are arranged at intervals in the first direction at the bottom of the first cavity. The high-voltage unit is arranged below at least one of the battery columns, and the power distribution unit and the transfer unit are respectively arranged below different battery columns.

[0010] In one embodiment, a high-voltage unit, a power distribution unit, and a switching unit, spaced apart in the first direction, are disposed at the bottom of the first cavity, and the embodiment further includes: In two adjacent battery rows, at least one battery row has the high-voltage unit located below it, and the other battery row has the power distribution unit or the transfer unit located below it.

[0011] In one embodiment, in the first direction, the battery array is configured with size D3, the high-voltage unit with size D4, the power distribution unit with size D5, and the transfer unit with size D6, satisfying: 0.8≤D4 / D3≤1.2, 0.8≤D5 / D3≤1.2, and 0.8≤D6 / D3≤1.2.

[0012] In one embodiment, a power distribution unit is disposed at the bottom of the first cavity, and the system further includes: The power distribution unit is equipped with a power distribution box and a UPS box arranged sequentially along the first direction, and both the power distribution box and the UPS box are electrically connected to a plurality of battery columns.

[0013] In one embodiment, a high-voltage unit is disposed at the bottom of the first cavity, and the cavity further includes: The high-voltage unit is configured with two high-voltage boxes arranged sequentially along the first direction, and the battery array above the high-voltage unit and an adjacent battery array are respectively electrically connected to one of the high-voltage boxes.

[0014] In one embodiment, the high-voltage unit further includes a separator, which is disposed between the two high-voltage boxes in the first direction.

[0015] In one embodiment, a high-voltage unit is disposed at the bottom of the first cavity, and the cavity further includes: The battery array is configured with a dimension of D3 in the first direction, and the dimension of the high-voltage box is reduced to D7, satisfying: 0.4≤D7 / D3≤0.55.

[0016] In one embodiment, an electronic control module is disposed at the bottom of the first cavity, and the system further includes: The battery module is also equipped with an electrical connector, which is electrically connected to the electronic control module. The electrical connector has multiple connection positions, and each battery column includes multiple connectors. The multiple connectors are electrically connected to the multiple connection positions in a one-to-one correspondence.

[0017] In one embodiment, the electrical connector is a copper busbar, and the plurality of connection positions are staggered on the electrical connector.

[0018] In one embodiment, multiple electrical connectors are configured, and the high-voltage unit, the power distribution unit, and the transfer unit are each provided with an electrical connector.

[0019] In one embodiment, a plurality of battery rows arranged sequentially along the first direction are configured in the first cavity, and the method further includes: Each of the battery rows is equipped with multiple battery packs, and the multiple battery packs are arranged sequentially along the second direction; The second direction is the height direction of the standardized box.

[0020] In one embodiment, it further includes: A fire-fighting module is configured at the top of the first cavity.

[0021] In one embodiment, in the second direction, the size of the electrical control module is configured as h1, and the size of the fire protection module is configured as h2, satisfying: 250mm≤h1≤350mm, 250mm≤h2≤300mm.

[0022] In one embodiment, the battery array is further configured with a cluster rack, which is housed in the standardized housing, and multiple battery packs are mounted on the cluster rack.

[0023] In one embodiment, the energy storage device is further configured with a plurality of support columns, which are spaced apart in the first direction. A battery array is disposed between two adjacent support columns, and the cluster frame is connected to two adjacent support columns.

[0024] In one embodiment, the energy storage device is further configured with a heat exchange pipeline, which is installed on the cluster frame and connects the thermal management module to the multiple battery packs.

[0025] In one embodiment, a plurality of battery rows arranged sequentially along the first direction are configured in the first cavity, including: four battery rows arranged sequentially along the first direction in the first cavity, each battery row being configured with eight battery packs arranged sequentially in a second direction.

[0026] In one embodiment, each battery pack is configured with multiple battery cells, which are arranged in an array of M rows and N columns, where M ≥ 2 and M is a positive integer, and N ≥ 2 and N is a positive integer. The large surface of each battery cell faces the first direction. Wherein, the row direction is the third direction, the column direction is the first direction, and the third direction is the width direction of the standardized box.

[0027] In one embodiment, the M cells in the first column are connected in series along the third direction, and the second to the Mth cells in any one of the second to Nth columns are connected in series. The first cell in column g is connected in series with the first cell in column g+1, and the Mth cell (212) in column g is connected in series with the Mth cell in column g+1, where g is an odd number and 1≤g≤N-1; The first cell in the i-th column is connected in series with the first cell in the (i+1)-th column, and the second cell in the i-th column is connected in series with the second cell in the (i+1)-th column, where i is an even number and 2≤i≤N-1.

[0028] In one embodiment, the standardized box is configured with dimension a in the first direction, dimension b in the third direction, and dimension c in the second direction, satisfying: 6052mm≤a≤6064mm, 2433mm≤b≤2443mm, and 2571mm≤c≤2891mm.

[0029] In one embodiment, the spacing between two adjacent battery rows in the first direction is configured as f, satisfying: 50mm≤f≤120mm.

[0030] In one embodiment, in each of the battery rows, the spacing between two adjacent battery packs in the second direction is configured as h3, satisfying: 14mm≤h3≤17mm.

[0031] In one embodiment, the dimension of the electronic control module in the third direction is w1, and the dimension of the thermal management module in the third direction is w2, satisfying: w1≤2233mm, w2≤2233mm.

[0032] In one embodiment, the battery module has a dimension of T1 in the first direction, the electronic control module has a dimension of T2 in the first direction, the thermal management module has a dimension of T3 in the first direction, and the fire protection module has a dimension of T4 in the first direction, satisfying: T1≤5858mm, T2≤5858mm, T3≤5858mm, T4≤5858mm.

[0033] In one embodiment, a plurality of the battery cells are arranged in a 16-row, 6-column array, the battery cells are of standardized size, and the capacity of the battery cells is A, satisfying: 588 Ah ≤ A ≤ 660 Ah.

[0034] In one embodiment, the battery pack's capacity is configured as E1, its size in the first direction is configured as W1, its size in the second direction is configured as H1, and its size in the third direction is configured as L1, satisfying: 195kWh≤E1≤220kWh, 1230mm≤W1≤1400mm, 240mm≤H1≤280mm, 2000mm≤L1≤2300mm.

[0035] In one embodiment, the energy storage device (100) is configured with an energy capacity of E2, satisfying: 6.26MWh≤E2≤7.10MWh, and / or, 420KW / m 2 ≤E2 / (a×b) ≤500KW / m 2 .

[0036] In one implementation, A = 660 Ah, satisfying: 219 kWh ≤ E1 ≤ 220 kWh, 6.9 MWh ≤ E2 ≤ 7.1 kWh, 475.6 kW / m³ 2 ≤E2 / (a×b) ≤476KW / m 2 .

[0037] Secondly, this application also provides an energy storage device configured using the layout method of an energy storage device as described in any one of the various embodiments of the first aspect. The energy storage device includes a standardized housing, a thermal management module, an electronic control module, and multiple battery rows. The standardized housing has a first cavity and a second cavity arranged sequentially along a first direction. The multiple battery rows are arranged sequentially in the first cavity along the first direction, and the multiple battery rows fill the space of the first cavity in the first direction. The thermal management module is disposed in the second cavity, and the electronic control module is disposed at the bottom of the first cavity. The first direction is the length direction of the standardized housing.

[0038] By arranging a first cavity and a second cavity along a first direction within a standardized enclosure, the size of the second cavity in the first direction is reduced to increase the size of the first cavity in the first direction. This increases the proportion of the first cavity in the internal space of the standardized enclosure, allowing multiple battery rows within the first cavity to occupy more space. This enables the energy storage device to have a higher capacity within the same volume, thus improving the energy density of the energy storage device. Furthermore, by arranging a thermal management module in the smaller second cavity and an electronic control module at the bottom of the first cavity, the internal space of the energy storage device can be fully utilized, improving space utilization. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0040] Figure 1 A flowchart of a layout method for an energy storage device according to one embodiment; Figure 2 A schematic diagram of an energy storage device according to one embodiment; Figure 3 This is a perspective view of a CTP battery pack according to one embodiment; Figure 4 This is an exploded schematic diagram of a CTP battery pack according to one embodiment; Figure 5 This is a schematic diagram of an electrical connector according to one embodiment.

[0041] Explanation of reference numerals in the attached figures: 100-Energy storage device, 10-Standardized enclosure, 20-Battery module, 21-Battery row, 211-Battery pack, 212-Battery cell, 30-Electrical control module, 31-High voltage unit, 311-High voltage box, 312-Separator, 32-Power distribution unit, 321-Power distribution box, 322-UPS box, 33-Transfer unit, 34-Electrical connector, 341-Connection position, 40-Thermal management module, 50-Fire protection module; X - First direction, Z - Second direction, Y - Third direction, D1 - Dimension of the second cavity in the first direction, D2 - Dimension of the first cavity in the first direction, D3 - Dimension of the battery pack in the first direction, D4 - Dimension of the high-voltage unit in the first direction, D5 - Dimension of the power distribution unit in the first direction, D6 - Dimension of the transfer unit in the first direction, D7 - Dimension of the high-voltage box in the first direction, h1 - Dimension of the electronic control module in the second direction, h2 - Dimension of the fire protection module in the second direction, h3 - Spacing between two adjacent battery packs in the second direction, f - Dimension of two adjacent battery packs in the first direction, W1 - Dimension of the battery pack in the first direction, H1 - Dimension of the battery pack in the second direction, L1 - Dimension of the battery pack in the third direction, a - Dimension of the standardized enclosure in the first direction. Detailed Implementation

[0042] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0043] It should be noted that when a component is said to be "fixed" to another component, it can be directly on the other component or it can be in a middle component. When a component is said to be "connected" to another component, it can be directly connected to the other component or it may be in a middle component.

[0044] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. The terminology used in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0045] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0046] With the rapid development of technology, electricity has become an indispensable energy source in people's production and daily life. To improve the smoothness of electricity supply and ensure the normal operation of production and daily life, energy storage devices are needed. As devices that cyclically store and release electrical energy, energy storage devices store electrical energy or supply the stored energy to electrical devices through charging or discharging. Energy storage devices are widely used in industrial power supply, household power supply, temporary power supply, mobile power supply, wind power generation, solar power generation, and energy storage power stations.

[0047] Existing energy storage devices typically use standardized enclosures for assembly and transportation. Since these standardized enclosures have fixed dimensions, how to fully utilize their internal space, increase the amount of electricity stored within that space, and meet energy density requirements remains a technical challenge that requires continuous improvement in energy storage technology.

[0048] First, define the direction. Please refer to [the relevant documentation / reference]. Figure 2 X is the first direction, Z is the second direction, and Y is the third direction. The first direction X, the second direction Z, and the third direction Y intersect each other. Optionally, the first direction X, the second direction Z, and the third direction Y are perpendicular to each other.

[0049] In one specific implementation, please refer to Figure 2 The first direction X is the length direction of the standardized box 10, the second direction Z is the height direction of the standardized box 10, and the third direction Y is the width direction of the standardized box 10.

[0050] Please refer to Figure 1 This application provides a layout method for an energy storage device 100, including: Step S10: Divide the internal space of the standardized box 10 into a first cavity and a second cavity along the first direction X.

[0051] Step S20: Adjust the dimensions of the first cavity and the second cavity in the first direction X, reduce the dimension of the second cavity in the first direction X, and increase the dimension of the first cavity in the first direction X.

[0052] Step S30: In the first cavity, a plurality of battery columns 21 are arranged sequentially along the first direction X, and the size of at least one battery column 21 in the first direction X is increased and / or the number of battery columns 21 is increased to fill the space of the first cavity in the first direction X.

[0053] Step S40: Configure a thermal management module 40 in the second cavity and an electronic control module 30 at the bottom of the first cavity.

[0054] In step S10, the standardized box 10 is made of a material with high structural strength, specifically a metal, high-strength plastic, ceramic, etc. Metal materials include, for example, aluminum, aluminum alloys, magnesium alloys, iron, and iron alloys, without limitation. Optionally, the wall thickness of the standardized box 10 can be approximately uniform throughout.

[0055] The dimensions of the standardized container 10 can be those of standard shipping containers used in transportation, such as 10 feet, 20 feet, 30 feet, 40 feet, or 45 feet, meeting the corresponding standards, with corresponding length, width, and height dimensions. Standard containers can be referenced in GB / T1413-2023 Series 1 Container Classification, Dimensions, and Rated Mass.

[0056] In one embodiment, the standardized box 10 has a dimension of a in the first direction, a dimension of b in the third direction, and a dimension of c in the second direction, satisfying: 6052mm≤a≤6064mm, 2433mm≤a≤2443mm, and 2571mm≤c≤2891mm.

[0057] In one specific implementation, the standardized container 10 is a 20-foot standard container. The dimension a of the standardized container 10 in the first direction X is 6058mm with a tolerance of 0mm-6mm; the dimension c of the standardized container 10 in the second direction Z is 2576mm or 2896mm with a tolerance of 0mm-5mm; and the dimension b of the standardized container 10 in the third direction Y is 2438mm with a tolerance of 0mm-5mm.

[0058] In other embodiments, the standardized enclosure 10 may also be any standardized enclosure conforming to the specified dimensions that is feasible in the art, and there is no specific limitation.

[0059] In the embodiments of this application, for standardized boxes 10 of various sizes, dimensions within the range of ±1%, ±2%, ±3%, ±4%, and ±5% can be regarded as dimensions within the tolerance range.

[0060] By adopting a standardized enclosure 10, the energy storage device 100 is easier to transport and install, and it helps to improve the problem of oversized or overweight transport, reducing the transportation cost of the energy storage device 100, thereby reducing the operating cost of the energy storage device 100.

[0061] In step S20, a model of the energy storage device 100 can be constructed using modeling, simulation, or modeling software, and the dimensions of the first cavity and the second cavity in the first direction X can be adjusted. By reducing the dimension of the second cavity in the first direction X to increase the dimension of the first cavity in the first direction X, more energy units can be placed in the first cavity, thereby increasing the energy density of the energy storage device 100.

[0062] In step S30, optionally, such as Figure 2 As shown, a plurality of battery rows 21 arranged sequentially along the second direction Z form a battery module 20. Optionally, a plurality of battery rows 21 arranged sequentially along the first direction X are configured in the first cavity, including: Each battery column 21 is equipped with multiple battery packs arranged sequentially in the second direction Z.

[0063] The battery pack 211 can adopt any feasible structure in the art, and the embodiments of this application do not impose specific limitations. In one embodiment, please refer to... Figure 2 and Figure 3 The battery pack 211 can adopt a CTP battery pack. CTP (Cell to Pack) is an innovative technology that skips the standardized module stage and directly integrates the battery cells 212 into the battery pack 211. By reducing the use of fasteners such as module shells, side plates, and screws, the battery pack 211 can accommodate more battery cells 212, improving space utilization, energy density, and reducing costs.

[0064] Optionally, within the standardized housing 10, multiple battery packs 211 are arranged in a multi-row, multi-column array. Optionally, the width direction of the battery pack 211 is a first direction X, the height direction of the battery pack 211 is a second direction Z, and the length direction of the battery pack 211 is a third direction Y. Optionally, in the third direction Y, each battery column 21 has only one battery pack 211, and a single battery pack 211 can fill the space of the first cavity in the third direction Y.

[0065] Optionally, the battery pack 211 includes multiple energy units, each capable of storing a large amount of electrical energy and capable of multiple charge-discharge cycles. The energy units can be lithium-ion batteries, sodium-ion batteries, sodium-lithium-ion batteries, lithium metal batteries, sodium metal batteries, lithium-sulfur batteries, magnesium-ion batteries, nickel-metal hydride batteries, nickel-cadmium batteries, lead-acid batteries, etc., and this application embodiment is not limited in this regard. As an example, the energy units can be cylindrical energy units, prism energy units, pouch energy units, or energy units of other shapes. Prismular energy units include prismatic energy units, blade-shaped energy units, and multi-prism batteries, such as hexagonal prism batteries, etc., and this application embodiment does not have any particular limitations.

[0066] Optionally, multiple battery packs 211 can be pre-assembled or combined to form a battery module 20, which is then assembled with the standardized housing 10; or, multiple CTPs can be assembled with the standardized housing 10 separately, without limitation.

[0067] In step S30, optionally, the size of only one battery column 21 in the first direction X can be increased, or the size of multiple battery columns 21 in the first direction X can be increased at the same time. After adjustment, the sizes of multiple battery columns 21 in the first direction X can be the same or different, without restriction.

[0068] Optionally, the number of battery rows 21 can be increased while increasing the size of the battery row 21 in the first direction X. Alternatively, only the number of battery rows 21 can be increased, in which case the size of the battery row 21 in the first direction X can remain unchanged or be slightly reduced to meet the size requirements of the standardized housing 10.

[0069] In step S40, the electronic control module 30 is used for real-time monitoring and data analysis of the battery module 20, and for adjusting the charging and discharging current, voltage, and power of the battery module 20. The electronic control module 30 and the standardized housing 10 can be connected by welding, bonding, snap-fitting, screwing, riveting, etc., without restriction.

[0070] It should be noted that the electronic control module 30 is arranged at the bottom of the first cavity, which indicates that the electronic control module 30 is housed in the first cavity and located below the multiple battery rows 21, while the non-electronic control module 30 is located below the first cavity.

[0071] Optionally, the second cavity is located on one side of the first cavity in the first direction X. In other possible embodiments, the first cavity includes a first cavity and a second cavity spaced apart in the first direction X, and the second cavity is located between the first cavity and the second cavity in the first direction X, without limitation.

[0072] The thermal management module 40 is used to dissipate the heat generated by the battery module 20 during operation, control the internal temperature of the standardized enclosure 10, reduce the risk of thermal runaway of the battery module 20, and improve the safety of the energy storage device 100. Optionally, the thermal management module 40 may include, but is not limited to, commonly used liquid cooling structures, air cooling structures, or other feasible thermal management structures in the art, without limitation. By placing the thermal management module 40 inside the standardized enclosure 10, it is beneficial to improve the integration of the standardized enclosure 10 and reduce the workload of on-site installation.

[0073] Optionally, the thermal management module 40 includes a vertical liquid chiller and heat exchange piping. The vertical liquid chiller is used to supply cooling medium to the heat exchange piping, which is used for thermally conductive connection with the battery module 20. The thermal management module 40 can exchange heat with each battery pack 211 of the battery module 20 through the heat exchange piping (e.g., liquid cooling piping), thereby managing the temperature of the battery module 20 and reducing the risk of temperature runaway. Compared to placing the thermal management module 40 on top of the battery module 20, placing it on one side of the battery module 20 allows for compatibility with more sizes and models of liquid cooling devices, eliminating the need for customization, reducing costs, and also simplifying the maintenance and replacement of the thermal management module 40.

[0074] Optionally, the thermal management module 40 may also include a dehumidifier to maintain the ambient humidity inside the standardized enclosure 10 within a preset range.

[0075] In the existing energy storage device 100, both the electrical control module 30 and the thermal management module 40 are located in the electrical cavity, which occupies a large space in the first direction X.

[0076] The energy storage device 100 in this embodiment of the application, by arranging a first cavity and a second cavity along the first direction X within a standardized housing 10, reduces the size of the second cavity in the first direction X to increase the size of the first cavity in the first direction X without changing the size of the standardized housing 10. This increases the proportion of the first cavity in the internal space of the standardized housing 10, allowing the multiple battery rows 21 in the first cavity to occupy more space, thus enabling the energy storage device 100 to have a higher power capacity in the same volume and improving the energy density of the energy storage device 100. Furthermore, by arranging a thermal management module 40 in the smaller second cavity and an electronic control module 30 at the bottom of the first cavity, the internal space of the energy storage device 100 can be fully utilized, improving space utilization.

[0077] In one implementation, such as Figure 1 and Figure 2 As shown, adjusting the dimensions of the first cavity and the second cavity in the first direction X includes: Reduce the size of the second cavity in the first direction X to D1, and increase the size of the first cavity in the first direction X to D2, satisfying: 380mm≤D1≤420mm, 5480mm≤D2≤5510mm.

[0078] Meeting the above-mentioned ranges for D1 and D2 can increase the space ratio of the first cavity in the first direction X within the standardized housing 10. The first cavity has more space to accommodate the battery array 21, enabling the energy storage device 100 to have a higher capacity in the same volume and a higher area energy density for the same capacity. When the value of D1 is too large and the value of D2 is too small, the size of the first cavity in the first direction X cannot be effectively increased to accommodate a larger battery array 21. When the value of D1 is too small and the value of D2 is too large, the space in the second cavity may not be sufficient to accommodate the thermal management module 40. Since the size of the battery array 21 in the first direction X is limited and cannot be adjusted to any value, the space in the first cavity in the first direction X cannot be effectively utilized by multiple battery arrays 21, which may result in wasted space.

[0079] Optionally, the specific values ​​for D1 can be 380mm, 385mm, 390mm, 395mm, 400mm, 405mm, 410mm, 415mm, or 420mm. Optionally, the specific values ​​for D2 can be 5480mm, 5485mm, 5490mm, 5495mm, 5500mm, 5505mm, or 5510mm.

[0080] In one implementation, such as Figure 2 As shown, a plurality of battery rows 21 arranged sequentially along a first direction X are configured in the first cavity, and the size of at least one battery row 21 in the first direction X is increased, including: Increase the size of battery array 21 in the first direction X to D3, satisfying: 1230mm≤D3≤1400mm.

[0081] Optionally, the dimensions D3 of the multiple battery rows 21 in the first direction X can be the same or different, as long as they meet the above-mentioned range, without restriction. It should be noted that the dimensions D3 of the multiple battery rows 21 in the first direction X must be less than or equal to the dimension D2 of the first cavity in the first direction X to avoid interference.

[0082] If D3 is within the aforementioned range, the battery pack 211 of a single battery column 21 has a larger size to accommodate more energy units, thereby increasing the capacity of the battery column 21 and thus increasing the total capacity of the energy storage device 100. When the size of D3 is too large, the number of battery columns 21 may decrease due to the excessive size of a single battery column 21 in the first direction X, making it impossible to effectively utilize the space of the first cavity. Optionally, the specific value of D3 can be 1230mm, 1250mm, 1280mm, 1300mm, 1320mm, 1350mm, 1380mm, or 1400mm.

[0083] In one embodiment, a plurality of battery rows 21 arranged sequentially along a first direction X are configured in the first cavity, increasing the number of battery rows 21, including: The N battery columns 21 arranged sequentially along the first direction X are increased to N+1 battery columns 21.

[0084] Optionally, the value of N can be 2, 3, 4, ..., etc., without limitation. In one specific embodiment, the number of battery columns 21 is increased to 4.

[0085] In one implementation, such as Figure 2 As shown, an electronic control module 30 is configured at the bottom of the first cavity, and also includes: A high-voltage unit 31, a power distribution unit 32, and a transfer unit 33 are arranged at intervals in the first direction X at the bottom of the first cavity. A high-voltage unit 31 is arranged below at least one battery column 21, and the power distribution unit 32 and the transfer unit 33 are respectively arranged below different battery columns 21.

[0086] The high-voltage unit 31 is used to distribute high-voltage DC power between the battery module 20 and the PCS (Power Conversion System), electrical loads, or the power grid. Optionally, the high-voltage unit 31 includes a high-voltage box 311, which typically integrates functional devices such as a high-voltage contactor, fuse, pre-charge circuit, and insulation resistance monitoring module.

[0087] In a specific embodiment, in the orthographic projection of the second direction Z, the high-voltage unit 31 is spaced apart from the adjacent battery column 21. For a single high-voltage unit 31, in the orthographic projection of the second direction Z, there is a gap between the high-voltage unit 31 disposed below the battery column 21 and the battery column 21 adjacent to that battery column 21.

[0088] This configuration avoids interference between the multiple battery columns 21 of the battery module 20 and the high-voltage unit 31 during installation.

[0089] The power distribution unit 32 is used to electrically connect the battery module 20, the thermal management module 40, the high voltage unit 31, and the transfer unit 33, so as to facilitate the circuit conduction of the battery module 20, the thermal management module 40, and the electronic control module 30, and maintain the normal operation of the battery module 20, the thermal management module 40, and the electronic control module 30.

[0090] Optionally, the power distribution unit 32 includes a power distribution box 321 and a UPS (Uninterruptible Power Supply Module) box arranged sequentially in the first direction X. The power distribution box 321 and the UPS box can be spaced apart or in contact in the first direction X, without restriction. The power distribution box 321 is used to distribute the electrical energy output from the battery module 20 to the internal loads of the energy storage device 100, such as air conditioning, lighting, and monitoring, and to monitor the voltage, current, power, and energy consumption of each branch in real time. The UPS box serves as the emergency power supply for the energy storage device 100. When a voltage sag, interruption, or frequency deviation is detected, the UPS box can switch to battery power mode to ensure the continuous operation of critical loads.

[0091] The adapter unit 33 is electrically connected to the battery module 20, the high-voltage unit 31, and the power distribution unit 32. Optionally, the adapter unit 33 serves as the electrical interface between the battery module 20 and the high-voltage unit 31, and it connects the positive and negative terminals of multiple battery rows 21 to a common busbar via copper busbars or flexible cables, thereby expanding the large-capacity energy storage device 100. Optionally, the adapter unit 33 includes a combiner box, which is electrically connected to multiple battery rows 21 in the battery module 20.

[0092] Optionally, when there is only one power distribution unit 32 and one transfer unit 33, multiple battery packs 21 are electrically connected to the power distribution unit 32 and the high voltage unit 31. In other embodiments, when there are multiple power distribution units 32 and multiple transfer units 33, each battery pack 21 is electrically connected to at least one power distribution unit 32 and a high voltage unit 31. The configuration can adopt any feasible connection method in the art, and there is no specific limitation.

[0093] By arranging the power distribution unit 32, the transfer unit 33, and the high-voltage unit 31 at intervals in the first direction X, the space below the battery module 20 can be fully utilized, improving space utilization. At the same time, it can reduce the interference between each electronic control unit (for example, it can reduce the electromagnetic interference of the high-voltage box 311 to the power distribution unit 32 and the transfer unit 33), and it is also conducive to accurate fault location and convenient for later maintenance.

[0094] In addition, by placing the high-voltage unit 31 below the battery column 21 and electrically connecting it to the battery column 21 above and an adjacent battery column 21, the power distribution unit 32 and the transfer unit 33, which are located in the electrical cavity in the prior art, are moved to the lower part of the battery column 21 adjacent to the high-voltage unit 31. This increases the space of the standardized housing 10 in the first direction X, excluding the thermal management module 40, thereby providing more space for the battery module 20 to increase the size of the battery column 21 in the first direction X or increase the number of battery columns 21.

[0095] In one implementation, such as Figure 1 As shown, in the first direction X, the size of the battery array 21 is D3, and the size of the high-voltage unit 31 is D4, satisfying: 0.8 ≤ D4 / D3 ≤ 1.2. By satisfying D3 and D4 within the above range, the high-voltage unit 31 can reduce its size in the first direction X while meeting the electronic control requirements, saving space below the battery module 20 and improving space utilization. When the size of D4 / D3 is too small, the size of the high-voltage unit 31 in the first direction X is too small. To ensure electronic control requirements, its size in other directions (e.g., the second direction Z) will increase, increasing the space occupied by the high-voltage unit 31 in other directions, thus affecting the layout of the battery module 20. When the size of D4 / D3 is too large, the space saved by the high-voltage unit 31 in the first direction X is insufficient to accommodate other units of the electronic control module 30, also resulting in wasted space and affecting the energy density of the energy storage device 100. Optionally, the specific values ​​of D4 / D3 can be 0.8, 0.85, 0.9, 0.95, 1, 1.05, 1.1, 1.15, or 1.2.

[0096] In one embodiment, a high-voltage unit 31 is disposed at the bottom of the first cavity, and the cavity further includes: Two high-voltage boxes 311 are arranged sequentially along the first direction X in the high-voltage unit 31, and the battery row 21 above the high-voltage unit 31 and an adjacent battery row 21 are electrically connected to a high-voltage box 311 respectively.

[0097] Optionally, the number of high-voltage boxes 311 corresponds to the number of battery rows 21, and multiple high-voltage boxes 311 are connected one-to-one with multiple battery rows 21. For example, there are four battery rows 21, with high-voltage units 31 located below two of the battery rows 21, and the four high-voltage boxes 311 of the two high-voltage units 31 are connected one-to-one with the four battery rows 21; or, there are eight battery rows 21, with high-voltage units 31 located below four of the battery rows 21, and the eight high-voltage boxes 311 of the four high-voltage units 31 are connected one-to-one with the eight battery rows 21.

[0098] Optionally, for the two high-voltage boxes 311 of a high-voltage unit 31, in the orthographic projection in the second direction Z, one of the high-voltage boxes 311 is spaced apart from the battery array 21 disposed on the side opposite to the other high-voltage box 311 in the first direction X.

[0099] In the existing energy storage device 100, the high-voltage unit 31 is usually one-to-one with the battery row 21 and is located below the battery row 21, while the power distribution unit 32, the transfer unit 33 and the thermal management module 40 are located together in the electrical cavity. The two occupy a large space in the first direction X of the standardized enclosure.

[0100] With this configuration, the high-voltage box 311 connected to the two adjacent battery rows 21 shares the space under one battery row 21, which saves the space under the other battery row 21. This allows other electronic control structures to be placed under the battery module 20, improving space utilization. The space originally used to accommodate the electronic control module 30 can now accommodate the battery row 21, further increasing energy density.

[0101] In one implementation, such as Figure 1 As shown, the high-voltage unit 31 also includes a separator 312, which is disposed between the two high-voltage boxes 311 in the first direction X.

[0102] Optionally, in the orthogonal projection of the third party to the Y direction, at least a portion of the separator 312 coincides with the high-voltage box 311. The separator 312 may be made of a material with electromagnetic shielding effect to prevent electromagnetic interference between the two high-voltage boxes 311 of the high-voltage unit 31.

[0103] Optionally, the separator 312 and the high-voltage box 311 are spaced apart in the first direction X, or the separator 312 is connected to the high-voltage box 311, without limitation. Optionally, the separator 312 can also be connected to the standardized enclosure 10 and / or the cluster frame, and the connection method is not specifically limited.

[0104] By setting up a separator 312, the two high-voltage boxes 311 in the same high-voltage unit 31 are prevented from interfering with each other.

[0105] In one implementation, such as Figure 2 As shown, a high-voltage unit 31 is disposed at the bottom of the first cavity, and it also includes: Reduce the size of the high-voltage box 311 to D7, satisfying: 0.4≤D7 / D3≤0.55.

[0106] By reducing the size D7 of the high-voltage box 311 to meet the aforementioned range, the high-voltage box 311 can reduce its size in the first direction X while meeting the electronic control requirements, saving space occupied by the high-voltage unit 31 below the battery module 20 and improving space utilization. When the size of D7 / D3 is too small, the size of the high-voltage box 311 in the first direction X is too small. In order to ensure electronic control requirements, its size in other directions (such as the second direction Z) will increase, increasing the space occupied by the high-voltage unit 31 in other directions, thus affecting the layout of the battery module 20. When the size of D7 / D3 is too large, the space saved by the high-voltage box 311 in the first direction X is insufficient to accommodate other units of the electronic control module 30, which will also cause space waste and affect the energy density of the energy storage device 100. Optionally, the specific values ​​of D7 / D3 can be 0.4, 0.45, 0.48, 0.5, and 0.55. Optionally, the specific values ​​for D7 can be 650mm, 655mm, 660mm, 665mm, 670mm, 675mm, or 680mm.

[0107] In one implementation, such as Figure 2 As shown, a high-voltage unit 31, a power distribution unit 32, and a transfer unit 33 are arranged at intervals in the first direction X at the bottom of the first cavity, and the cavity also includes: In two adjacent battery rows 21, at least one battery row 21 is provided with a high voltage unit 31 below it, and the other battery row 21 is provided with a power distribution unit 32 or a transfer unit 33 below it. The power distribution unit 32 has a size of D5, and the transfer unit 33 has a size of D6, satisfying: 0.8≤D5 / D3≤1.2, 0.8≤D6 / D3≤1.2.

[0108] Since the battery row 21 above the high-voltage unit 31 and an adjacent battery row 21 are electrically connected to the two high-voltage boxes 311 in the high-voltage unit 31, the power distribution unit 32 or the transfer unit 33 can be configured in the space below the adjacent battery row 21, thereby improving space utilization.

[0109] It is important to note that in two adjacent battery columns 21, either one battery column 21 may have a high-voltage unit 31 located below it, or both battery columns 21 may have a high-voltage unit 31 located below it. In this case, the high-voltage unit 31 below each battery column 21 is electrically connected to other battery columns 21 on the side furthest from the other battery column 21, avoiding redundant connections. Furthermore, compared to the case where neither of the two adjacent battery columns 21 has a high-voltage unit 31 located below it, this configuration results in shorter connection paths between each high-voltage box 311 and the battery column 21, simplifying the internal wiring of the energy storage device 100 and reducing system complexity.

[0110] When the dimensions of D5 / D3 are too small, the size of the power distribution unit 32 in the first direction X is too small. To ensure the electrical control requirements, its size in other directions (such as the second direction ZZ) will increase, increasing the space occupied by the power distribution unit 32 in other directions, thus affecting the layout of the battery module 20. When the dimensions of D5 / D3 are too large, the space occupied by the power distribution unit 32 in the first direction X is too large, which may interfere with the high-voltage unit 31 or the transfer unit 33, and it is also prone to collisions with other structures during transportation and use. Optionally, the specific values ​​of D5 / D3 can be 0.8, 0.85, 0.9, 0.95, 1, 1.05, 1.1, 1.15, or 1.2.

[0111] Similarly, the settings for D6 / D3 are similar to those for D5 / D3, as described above, and will not be repeated here. Optionally, the values ​​for D5 and D6 can be the same or slightly different; there are no specific restrictions. Optionally, the specific values ​​for D5 and D6 can be 1200mm, 1250mm, 1280mm, 1300mm, 1310mm, 1330mm, 1350mm, 1380mm, 1400mm, and 1430mm.

[0112] With this configuration, the high-voltage unit 31 located below a single battery column 21 can control two battery columns 21 simultaneously, saving the space occupied by the high-voltage unit 31 below the battery column 21. The battery module 20 can also accommodate other units of the electronic control module 30, improving space utilization and helping to increase the energy density of the energy storage device 100.

[0113] In one embodiment, a power distribution unit 32 is disposed at the bottom of the first cavity, and the device further includes: In the power distribution unit 32, a power distribution box 321 and a UPS box 322 are arranged sequentially along the first direction X. Both the power distribution box 321 and the UPS box 322 are electrically connected to multiple battery columns 21.

[0114] Optionally, the power distribution unit 32 includes a power distribution box 321 and a UPS (Uninterruptible Power Supply Module) box arranged sequentially in the first direction X. The power distribution box 321 and the UPS box can be spaced apart or in contact in the first direction X, without restriction. The power distribution box 321 is used to distribute the electrical energy output from the battery module 20 to the internal loads of the energy storage device 100, such as air conditioning, lighting, and monitoring, and to monitor the voltage, current, power, and energy consumption of each branch in real time. The UPS box serves as the emergency power supply for the energy storage device 100. When a voltage sag, interruption, or frequency deviation is detected, the UPS box can switch to battery power mode to ensure the continuous operation of critical loads.

[0115] In one implementation, such as Figure 5 As shown, an electronic control module 30 is configured at the bottom of the first cavity, and also includes: The electronic control module 30 is also equipped with an electrical connector 34, which is electrically connected to the electronic control module 30. The electrical connector 34 has multiple connection positions 341. Each battery pack 211 includes a connector, and the connectors of the multiple battery packs 211 are electrically connected to the multiple connection positions 341 in a one-to-one correspondence.

[0116] The electrical connector 34 may adopt any feasible structure in the art that can realize current transmission, including but not limited to copper busbars, connecting pieces, etc., without any specific limitation. Optionally, multiple battery packs 211 in each battery column 21 may be electrically connected to one electrical connector 34, or all battery packs 211 in the battery module 20 may be electrically connected to one electrical connector 34. There is no specific limitation.

[0117] Optionally, the connectors for the battery pack 211 can be wire harnesses, connector terminals, connector plates, etc., without limitation. The connection position 341 can be provided with protrusions, grooves, or holes, without limitation.

[0118] With this configuration, the current from multiple battery packs 211 can be combined or distributed through the electrical connector 34, thereby enabling power transmission for the energy storage device.

[0119] In one embodiment, the electrical connector 34 is a copper busbar, and multiple connection positions 341 are staggered on the electrical connector 34.

[0120] Optionally, the electrical connector 34 can be generally square, rectangular, trapezoidal, irregular in shape, etc., without limitation. Understandably, multiple connection positions 341 can be arranged in an array on the electrical connector 34, or multiple connection positions 341 can extend along any one or a combination of straight lines, broken lines, or curves.

[0121] In one specific implementation, such as Figure 5 As shown, multiple connection positions 341 are arranged sequentially and spaced apart along a zigzag line on the electrical connector 34. This arrangement allows for more connection positions 341 to be spaced apart on the same area of ​​copper busbar compared to a straight line arrangement. This reduces the area of ​​the copper busbar while connecting the same number of battery packs 211, achieving denser busbar current collection.

[0122] In one embodiment, multiple electrical connectors 34 are configured, and each of the high-voltage unit 31, the power distribution unit 32, and the transfer unit 33 is provided with an electrical connector 34.

[0123] By employing an electrical connector 34 that enables denser current convergence, the volume of the electrical connector 34 is reduced when connecting the same number of battery packs 211. This facilitates the reduction of the size of the high-voltage unit 31, the power distribution unit 32, and the transfer unit 33, thereby increasing the power capacity and energy density of the energy storage device 100.

[0124] In one implementation method, please refer to Figure 1 It also includes: Step S50: Fire protection module 50 is configured on the top of the first cavity.

[0125] The fire protection module 50 is used to control the activation of fire protection components when the internal temperature of the energy storage device 100 becomes unbalanced or a fire occurs. The fire protection components can be fire extinguishers, etc., and can be installed inside the energy storage device 100. Optionally, the power distribution unit 32 is also electrically connected to the fire protection module 50 to facilitate the normal operation of the fire control module.

[0126] Since the dimensions of the standardized enclosure 10 are preset, after configuring the battery module 20 and the electronic control module 30, there is still some space above the battery module 20. This space is insufficient to add another battery pack 211. In this case, placing the fire-fighting module 50 above the battery module 20 can make full use of the empty space above the battery module 20 and improve the internal space utilization of the energy storage device 100.

[0127] In one implementation, such as Figure 2 As shown, the electrical control module 30 is configured with a size of h1 in the second direction Z, and the fire protection module 50 is configured with a size of h2 in the second direction Z, satisfying: 250mm≤h1≤350mm, 250mm≤h2≤300mm.

[0128] Optionally, the dimension h1 of the electronic control module 30 in the second direction Z can be the maximum dimension of the electronic control module 30 in the second direction Z. The dimensions of the high-voltage unit 31, the power distribution unit 32, and the conversion unit in the second direction Z can be the same or different, without restriction.

[0129] Optionally, the value of h1 can be 250mm, 260mm, 270mm, 280mm, 290mm, 300mm, 310mm, 320mm, 330mm, 340mm, or 350mm. Optionally, the value of h2 can be 250mm, 260mm, 270mm, 280mm, 290mm, or 300mm.

[0130] In one embodiment, the battery row 21 is further configured with a cluster rack (not shown), which is housed in a standardized housing, and multiple battery packs 211 in the multiple battery rows 21 are mounted on the cluster rack.

[0131] The cluster frame can be an integral structure or a separate structure, and any feasible cluster frame structure in this field can be adopted without limitation. Optionally, the battery pack 211 and the cluster frame can be connected by welding, bonding, snap-fitting, screwing, riveting, etc., without limitation.

[0132] With this configuration, the installation of the multiple battery packs 211 in the battery module 20 is simple and reliable.

[0133] In one embodiment, the energy storage device 100 is further configured with a plurality of support columns, which are spaced apart in the first direction X. A battery array 21 is provided between two adjacent support columns, and the cluster frame is connected to two adjacent support columns.

[0134] The support columns are made of materials with high structural strength, such as metals, high-strength plastics, ceramics, etc. Metals include aluminum, aluminum alloys, magnesium alloys, iron, and iron alloys, among others, with no restrictions. The support columns and the standardized enclosure 10 can be an integrated structure or separate structures, with no restrictions.

[0135] Optionally, the number of support columns is the number of battery rows 21 plus one. With this configuration, each battery row 21 has support columns on both sides, providing structural support for the battery row 21.

[0136] Optionally, the cluster frame and the support column can be connected by welding, bonding, snap-fitting, screwing, riveting, plugging, etc., without restriction.

[0137] By setting up support columns, the overall mechanical strength of the standardized housing 10 can be enhanced, providing stable support for the battery module 20.

[0138] In one embodiment, the size of the support column in the first direction X can be between 50mm and 120mm. By ensuring the size of the support column falls within this range, the structural strength of the support column is guaranteed while minimizing its space occupation, thus increasing the space ratio of the battery module within the standardized housing 10. If the support column is too large, it occupies excessive space and increases costs; if the support column is too small, its structural strength is insufficient to provide effective support for the battery array 21. Optionally, the specific size of the support column can be 50mm, 60mm, 70mm, 80mm, 90mm, 100mm, 110mm, or 120mm.

[0139] Optionally, the dimensions of the multiple support columns in the first direction X can be the same or different, without restriction.

[0140] In one embodiment, the energy storage device 100 is further equipped with heat exchange piping, which is installed on the cluster frame and connects the thermal management module 40 to the plurality of battery packs 211. Optionally, the heat exchange piping and the plurality of battery packs 211 are thermally conductively connected.

[0141] With this configuration, the thermal management module 40 can exchange heat with each battery pack 211 through the heat exchange pipeline, thereby managing the temperature of the battery module 20 and reducing the risk of temperature runaway of the battery module 20.

[0142] In one implementation, such as Figures 2 to 4 As shown, a plurality of battery rows 21 arranged sequentially along the first direction X are configured in the first cavity, including: The first cavity is configured with four battery rows 21 arranged sequentially along the first direction X, and each battery row 21 is configured with eight battery packs 211 arranged sequentially along the second direction Z.

[0143] Optionally, multiple battery packs 211 can be directly stacked; or, the battery column 21 includes a cluster frame, and multiple battery packs 211 can also be installed on the cluster frame, with adjacent two battery packs 211 in each battery column 21 having a gap in the second direction Z; or, at least two of the multiple battery packs 211 can be directly stacked in the second direction Z. All of the above methods are acceptable and there is no specific limitation.

[0144] In one implementation, such as Figure 3 As shown, each battery pack 211 includes multiple battery cells 212, which are arranged in an array of M rows and N columns, where M ≥ 2 and M is a positive integer, and N ≥ 2 and N is a positive integer. The larger face of each battery cell 212 faces the first direction; where the row direction is the third direction Y and the column direction is the first direction X.

[0145] Optionally, the spacing between any two adjacent cells 212 in the row direction is the same as the spacing between any two adjacent cells 212 in the column direction, so as to simplify the assembly of multiple cells 212 and at the same time improve the energy density of the battery pack 211.

[0146] In another embodiment, the spacing between any two adjacent cells 212 in the row direction is different from the spacing between any two adjacent cells 212 in the column direction, so that the battery pack 211 can flexibly adjust the arrangement spacing of multiple cells 212 in different directions according to factors such as heat dissipation requirements and mechanical loads, thereby improving the adaptability of the battery pack 211.

[0147] In a specific implementation, to simplify the series connection of multiple battery cells 212 under different quantities and array arrangements, the series connection method between the multiple battery cells 212 is as follows: The M cells 212 in the first column are connected in series along the third direction, and the second cell 212 to the Mth cell 212 in any column from the second to the Nth column are connected in series. The first cell 212 in column g is connected in series with the first cell 212 in column g+1, and the Mth cell 212 in column g is connected in series with the Mth cell 212 in column g+1. g is an odd number and 1≤g≤N-1. The first cell 212 in the i-th column is connected in series with the first cell 212 in the (i+1)-th column, and the second cell 212 in the i-th column is connected in series with the second cell 212 in the (i+1)-th column, where i is an even number and 2≤i≤N-1.

[0148] By setting the connection method between the multiple cells 212, a continuous, branchless and regular series circuit between the multiple cells 212 is realized. The connection method with high regularity and symmetry is set between the first column, the odd column and the even column, which is beneficial to realize the modular assembly between the multiple cells 212 of the battery pack 211.

[0149] Optionally, the energy unit is a standardized-size cell 212. A standardized-size cell 212 is defined as a cell 212 with a preset capacity and whose width, thickness, and height meet the preset dimensions. For example, a standardized-size cell 212 has a capacity of 588 Ah and dimensions of 73 mm (thickness) × 288 mm (width) × 214 mm (height); or, a standardized-size cell 212 has a capacity of 660 Ah and dimensions of 73 mm (thickness) × 319 mm (width) × 214 mm (height); or, a standardized-size cell 212 has a capacity of 648 Ah and dimensions of 72 mm (thickness) × 352 mm (width) × 205 mm (height), and so on, without any specific limitations.

[0150] In this embodiment of the application, the thickness of the battery cell 212 is the dimension of the battery cell 212 in the first direction X, the width of the battery cell 212 is the dimension of the battery cell 212 in the third direction Y, and the height of the battery cell 212 is the dimension of the battery cell 212 in the second direction Z.

[0151] In the embodiments of this application, for the standardized size of the battery cell 212 of various sizes, the size within the range of ±1%, ±2%, ±3%, ±4%, and ±5% can be regarded as the size within the tolerance range.

[0152] In some other embodiments, the standardized size of the battery cell 212 may also adopt any other feasible preset capacity and preset size, without any specific limitation.

[0153] With this configuration, compared to the configuration where the large surface of the cell 212 faces the third direction Y (i.e., the large surface of the cell 212 faces the length direction of the battery pack), the battery pack 211 in this embodiment of the application can have a higher energy density in the same volume, while having a smaller volume while meeting the same energy density, which meets the installation requirements of the standardized housing 10.

[0154] In one implementation, such as Figure 1 As shown, in the first direction X, the spacing between two adjacent battery rows 21 is configured as f, satisfying: 50mm ≤ f ≤ 120mm. Optionally, this spacing can be used to place support columns and cluster frames. Satisfying f within the above range ensures the strength of the support structure without occupying excessive space, thus increasing the space ratio of the battery modules 20 within the standardized housing 10. When the value of f is too large, the spacing occupies too much space; when the value of f is too small, the spacing is insufficient, potentially resulting in insufficient structural strength of the support structure and inability to provide effective support for the battery rows 21. Optionally, the specific value of f can be 50mm, 60mm, 70mm, 80mm, 90mm, 100mm, 110mm, or 120mm.

[0155] Optionally, among the multiple battery columns 21, the size of the interval f between two adjacent battery columns 21 in the first direction X can be the same or different, without restriction.

[0156] In one implementation, such as Figure 1 As shown, in each battery row 21, the spacing between two adjacent battery packs 211 in the second direction is configured as h3, satisfying: 14mm ≤ h3 ≤ 17mm. This ensures that when the height of each battery row 21 is relatively small, there is sufficient clearance between adjacent battery packs 211 for wire harness passage or heat dissipation. Optionally, the spacing between two adjacent battery packs 211 can be the height of the cluster frame disposed between the two adjacent battery packs 211.

[0157] In one embodiment, the size of the electronic control module 30 in the third direction Y is configured as w1, and the size of the thermal management module 40 in the third direction Y is configured as w2, satisfying: w1≤2233mm, w2≤2233mm. With this configuration, when applied to the standardized enclosure 10, the electronic control module 30 and the thermal management module 40 can be smoothly installed inside the standardized enclosure 10, avoiding interference between the electronic control module 30 and the thermal management module 40 and the standardized enclosure 10.

[0158] In one embodiment, the battery module 20 is configured with a dimension of T1 in the first direction X, the electronic control module 30 with a dimension of T2 in the first direction X, the thermal management module 40 with a dimension of T3 in the first direction X, and the fire protection module 50 with a dimension of T4 in the first direction X, satisfying: T1≤5858mm, T2≤5858mm, T3≤5858mm, T4≤5858mm. With this configuration, the dimensions of the battery module 20, electronic control module 30, thermal management module 40, and fire protection module 50 in the first direction X all meet the requirements of the standardized housing 10, facilitating transportation.

[0159] Optionally, the dimensions of the electronic control module 30 in the third-direction Y direction can be the same as or different from the dimensions of the thermal management module 40 in the third-direction Y direction, without any restriction.

[0160] In one implementation, such as Figure 3 As shown, multiple battery cells 212 are arranged in an array of 16 rows and 6 columns. The battery cells 212 are of standardized size and have a capacity of A, which satisfies the following condition: 588 Ah ≤ A ≤ 660 Ah.

[0161] Optionally, each battery pack 211 includes 6 battery modules arranged sequentially in the third direction Y, and each battery module includes 16 standardized-size cells 212 arranged sequentially in the first direction X.

[0162] Optionally, the specific values ​​of A can be 588 Ah, 600 Ah, 610 Ah, 620 Ah, 628 Ah, 640 Ah, 648 Ah, 650 Ah, or 660 Ah.

[0163] With this configuration, the battery cells 212 in the battery pack 211 are grouped in a 96S configuration, which reduces the size of the battery pack 211 in the first direction X, so that the size of the battery pack 211 in the first direction X, W1, is adjusted to about 1250mm.

[0164] In one embodiment, the battery pack 211 is configured with a power capacity of E1, a size of W1 in the first direction X, a size of H1 in the second direction Z, and a size of L1 in the third direction Y, satisfying: 588 Ah≤A≤660 Ah, 195kWh≤E1≤220kWh, 1200mm≤W1≤1400mm, 240mm≤H1≤280mm, 2000mm≤L1≤2300mm.

[0165] Optionally, each battery pack includes six battery modules arranged sequentially in the third direction Y, and each battery module includes 17 standardized-size cells 212 arranged sequentially in the first direction X.

[0166] Optionally, E1 can be 195kWh, 198kWh, 200kWh, 205kWh, 208kWh, 210kWh, 213kWh, 215kWh, 218kWh, or 220kWh. Optionally, W1 can be 1200mm, 1250mm, 1300mm, 1350mm, or 1400mm. Optionally, H1 can be 240mm, 245mm, 250mm, 255mm, 260mm, 265mm, 270mm, 275mm, or 280mm. Optionally, L1 can be 2000mm, 2050mm, 2100mm, 2150mm, 2200mm, 2250mm, or 2300mm.

[0167] In one specific implementation, the following conditions are met: A=660Ah, W1=1369mm, H1=255mm, and L1 is not limited.

[0168] Alternatively, in another specific implementation, the following conditions are met: A=588Ah, W1=1242mm, H1=255mm, and L1 is not limited.

[0169] By setting the battery pack 211's capacity E1, its dimensions W1 in the first direction X, H1 in the second direction Z, and L1 in the third direction Y to all satisfy the above ranges, and by adjusting the arrangement of the cells 212 within the battery pack 211, the capacity of the battery pack 211 can be increased within the same volume, and the volume of the battery pack 211 can be reduced under the premise of the same capacity, thereby increasing the energy density of the battery pack 211 and thus increasing the energy density of the energy storage device 100.

[0170] In one implementation, such as Figure 1 As shown, the energy storage device 100 has an energy capacity configuration of E2, the standardized enclosure 10 has a dimension configuration of a in the first direction X, and a dimension configuration of b in the third direction Y, satisfying: 6.26MWh≤E2≤7.10 MWh, and / or, 420KW / m 2 ≤E2 / (a×b) ≤500KW / m 2 .

[0171] Optionally, the specific values ​​of E2 can be 6.26MWh, 6.27MWh, 6.28MWh, 6.32MWh, 6.35MWh, 6.42MWh, 6.48MWh, 6.55MWh, 6.62MWh, 6.68MWh, 6.7MWh, 6.75MWh, 6.8MWh, 6.85MWh, 6.9MWh, 6.99MWh, 7.01MWh, 7.03MWh, 7.08MWh, and 7.1MWh. Optionally, the specific value of E2 / (a×b) can be 420KW / m. 2 425KW / m 2 430KW / m 2 440KW / m 2 450KW / m 2 455KW / m 2 460KW / m 2 465KW / m 2 470KW / m 2 475KW / m 2 480KW / m 2 485KW / m 2 490KW / m 2 495KW / m 2 500KW / m 2 .

[0172] In one implementation, A = 660 Ah, satisfying: 219 kWh ≤ E1 ≤ 220 kWh, 7.0 MWh ≤ E2 ≤ 7.1 kWh, 475.6 kW / m³ 2 ≤E2 / (a×b) ≤476KW / m 2 .

[0173] Understandably, E2 / (a×b) represents the area energy density of the energy storage device 100. In a specific implementation, the following conditions are met: A = 660 Ah, E1 = 219.6 kWh, E2 = 7.028 MWh, E2 / (a×b) = 475.85 kW / m² 2 .

[0174] Alternatively, in another specific implementation, A = 588 Ah, satisfying: 195 kWh ≤ E1 ≤ 196 kWh, 6.26 MWh ≤ E2 ≤ 6.27 kWh, 423.8 kW / m³ 2 ≤E2 / (a×b) ≤424.5KW / m 2 .

[0175] Alternatively, in another specific implementation, A = 648 Ah, satisfying: 215 kWh ≤ E1 ≤ 216 kWh, 6.89 MWh ≤ E2 ≤ 6.91 kWh, 408.2 kW / m³ 2 ≤E2 / (a×b) ≤408.8KW / m 2 .

[0176] Alternatively, the energy storage device 100 may also use other feasible standard-sized cells 212, as long as their arrangement meets the area energy density requirements of the energy storage device 100. The embodiments of this application do not impose specific restrictions on this.

[0177] This configuration ensures that the area energy density of the energy storage device 100 is increased under the same power capacity. While increasing the maximum power capacity that the energy storage device 100 can achieve, the area occupied by the energy storage device 100 is controlled, making it easier to transport.

[0178] Please refer to Figure 1 This application embodiment also provides an energy storage device 100, which is configured using the layout method of the energy storage device 100 in this application embodiment. The energy storage device 100 includes a standardized housing 10, a thermal management module 40, an electronic control module 30, and multiple battery rows 21. The standardized housing 10 has a first cavity and a second cavity arranged sequentially along a first direction X. Multiple battery rows 21 are arranged sequentially in the first cavity along the first direction X, and the multiple battery rows 21 fill the space of the first cavity in the first direction X. The thermal management module 40 is disposed in the second cavity, and the electronic control module 30 is disposed at the bottom of the first cavity.

[0179] The energy storage device 100 in this embodiment of the application sets up an electronic control module 30, a thermal management module 40, and multiple battery rows 21 inside a standardized housing 10. The electronic control module 30 is located at the bottom of the first cavity, saving space occupied by the electronic control module 30 in the first direction X. The first cavity can occupy more space in the first direction X, thereby increasing the size of the battery rows 21, which is beneficial to improving the energy density of the energy storage device 100. After arranging multiple battery rows 21, the standardized housing 10 still has a certain amount of spare space in the length direction. This space is not enough to add another row of battery rows 21. Therefore, the thermal management module 40 is set on one side of the battery module 20 in the first direction X, further utilizing the internal space of the standardized housing 10, improving space utilization, and facilitating the maintenance and replacement of the thermal management module 40.

[0180] In this embodiment of the energy storage device 100, by adjusting the electronic control module 30 to be entirely located below the battery module 20, the space ratio of the electronic control module 30 within the standardized housing 10 in the first direction X is reduced, and the proportion of the battery module 20 (battery cavity) is increased, which can increase the size of the battery array 21 in the first direction or increase the number of battery arrays 21. Specifically, the adjustment method is to reduce the size of each electronic control unit of the electronic control module in the first direction X. Furthermore, by adjusting the arrangement direction of multiple cells 212 within the battery pack 211, with the large facet of the cells 212 facing the first direction X, and the cell grouping method adjusted to 96S, the size of the battery pack 211 in the first direction X is reduced from 1550mm to approximately 1250mm. This allows four battery rows to be arranged sequentially along the first direction X within the standardized enclosure 10, reducing the size of the battery module 20 in the first direction X to within 5858mm, meeting the size requirements of the standardized enclosure 10. This achieves a capacity of 6.9MWh for the energy storage device 100 within a standard 20-foot container, compared to the 6.37 MWh capacity of the energy storage device 100 within a standard 20-foot container in the prior art. This increases the total capacity of the energy storage device 100 within the same size, thereby improving the energy density of the energy storage device 100.

[0181] In the description of the embodiments of this application, it should be noted that the orientation or positional relationship of the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and other indicators are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0182] The above-disclosed embodiments are merely preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art will understand that all or part of the processes for implementing the above embodiments and equivalent variations made in accordance with the claims of this application are still within the scope of this application.

Claims

1. A method of layout of an energy storage device (100) configured with a standardized box (10), characterized in that, The method comprises the following steps: dividing the internal space of the standardized box (10) into a first cavity and a second cavity along a first direction; adjusting the size of the first cavity and the second cavity in the first direction, reducing the size of the second cavity in the first direction to increase the size of the first cavity in the first direction; configuring a plurality of battery columns (21) in the first cavity along the first direction in sequence, increasing the size of at least one of the battery columns (21) in the first direction and / or increasing the number of the battery columns (21) to occupy the space of the first cavity in the first direction; configuring a thermal management module (40) in the second cavity and an electronic control module (30) at the bottom of the first cavity; wherein the first direction is the length direction of the standardized box (10).

2. The layout method of an energy storage device (100) according to claim 1, wherein, The step of adjusting the size of the first cavity and the second cavity in the first direction comprises: reducing the size of the second cavity in the first direction to D1 and increasing the size of the first cavity in the first direction to D2, which satisfies 380mm≤D1≤420mm and 5480mm≤D2≤5510mm.

3. The layout method of an energy storage device (100) according to claim 1, wherein, The step of configuring a plurality of battery columns (21) in the first cavity along the first direction in sequence, increasing the size of at least one of the battery columns (21) in the first direction, comprises: increasing the size of the battery columns (21) in the first direction to D3, which satisfies 1230mm≤D3≤1400mm.

4. The layout method of an energy storage device (100) according to claim 1, wherein, The step of configuring a plurality of battery columns (21) in the first cavity along the first direction in sequence, increasing the number of the battery columns (21), comprises: increasing N battery columns (21) arranged along the first direction in sequence to N+1 battery columns (21).

5. The layout method of an energy storage device (100) according to claim 1, wherein, The step of configuring an electronic control module (30) at the bottom of the first cavity further comprises: configuring a high-voltage unit (31), a power distribution unit (32) and a switching unit (33) arranged at intervals in the first direction at the bottom of the first cavity, wherein the high-voltage unit (31) is arranged below at least one of the battery columns (21), and the power distribution unit (32) and the switching unit (33) are arranged below different battery columns (21) respectively.

6. The layout method of an energy storage device (100) according to claim 5, wherein, The step of configuring a high-voltage unit (31), a power distribution unit (32) and a switching unit (33) arranged at intervals in the first direction at the bottom of the first cavity further comprises: in two adjacent battery columns (21), the high-voltage unit (31) is arranged below at least one of the battery columns (21), and the power distribution unit (32) or the switching unit (33) is arranged below the other battery column (21).

7. The layout method of the energy storage device (100) according to claim 5, wherein In the first direction, the size of the battery column (21) is configured as D3, the size of the high-voltage unit (31) is configured as D4, the size of the power distribution unit (32) is configured as D5, and the size of the switching unit (33) is configured as D6, satisfying: 0.8≤D4 / D3≤1.2, 0.8≤D5 / D3≤1.2, and 0.8≤D6 / D3≤1.

2.

8. The layout method of an energy storage device (100) according to claim 5, wherein, The power distribution unit (32) is arranged at the bottom of the first cavity, further comprising: The power distribution unit (32) is arranged with a power distribution box (41) and a UPS box (42) arranged in sequence in the first direction, and the power distribution box (41) and the UPS box (42) are electrically connected with a plurality of battery columns (21).

9. The layout method of an energy storage device (100) according to claim 5, wherein, The high-voltage unit (31) is arranged at the bottom of the first cavity, further comprising: The high-voltage unit (31) is arranged with two high-voltage boxes (311) arranged in sequence in the first direction, and the battery column (21) above the high-voltage unit (31) and the adjacent battery column (21) are respectively electrically connected with one of the high-voltage boxes (311).

10. The layout method of an energy storage device (100) according to claim 9, wherein, The high-voltage unit (31) further comprises a partition (312), which is arranged between the two high-voltage boxes (311) in the first direction.

11. The layout method of an energy storage device (100) according to claim 10, wherein, The high-voltage unit (31) is arranged at the bottom of the first cavity, further comprising: The size of the battery column (21) in the first direction is configured as D3, and the size of the high-voltage box (311) is reduced to D7, satisfying: 0.4≤D7 / D3≤0.

55.

12. The layout method of an energy storage device (100) according to claim 8, wherein, The electric control module (30) is arranged at the bottom of the first cavity, further comprising: The electric control module (30) is further provided with an electric connector (34) electrically connected with the electric control module (30), and the electric connector (34) has a plurality of connection positions (341). Each battery column (21) includes a plurality of connectors, and a plurality of the connectors are electrically connected with a plurality of the connection positions (341) one by one.

13. The layout method of an energy storage device (100) according to claim 12, wherein, The electric connector (34) is a copper bar, and a plurality of the connection positions (341) are arranged staggered on the electric connector (34).

14. The layout method of an energy storage device (100) according to claim 12, wherein, The electric connector (34) is arranged in multiple, and the high-voltage unit (31), the power distribution unit (32), and the switching unit (33) are respectively provided with the electric connector (34).

15. The layout method of an energy storage device (100) according to any one of claims 1 to 14, wherein, A plurality of battery columns (21) are arranged in sequence in the first direction in the first cavity, further comprising: Each battery column (21) is provided with a plurality of battery packs (211), and a plurality of battery packs (211) are arranged in sequence in a second direction. The second direction is the height direction of the standardized box (10).

16. The layout method of an energy storage device (100) according to claim 15, wherein, Further comprising: A fire-fighting module (50) is arranged at the top of the first cavity.

17. The layout method of the energy storage device (100) according to claim 16, wherein, In the second direction, the size of the electric control module (30) is configured as h1, and the size of the fire-fighting module (50) is configured as h2, satisfying: 250mm≤h1≤350mm, and 250mm≤h2≤300mm.

18. The layout method of the energy storage device (100) according to claim 15, wherein the battery column (21) is further configured with a cluster frame, the cluster frame is accommodated in the standardized box (10), and the plurality of battery packs (211) are installed on the cluster frame. The energy storage device (100) is further configured with a plurality of support columns, the plurality of support columns are arranged at intervals in the first direction, the battery column (21) is arranged between any two adjacent support columns, and the cluster frame is connected with any two adjacent support columns.

19. The layout method of an energy storage device (100) according to claim 18, wherein, 20. The layout method of the energy storage device (100) according to claim 18, wherein the energy storage device (100) is further configured with a heat exchange pipeline, the heat exchange pipeline is installed on the cluster frame, and the heat exchange pipeline is connected with the heat management module (40) and the plurality of battery packs (211). The first cavity is configured with a plurality of battery columns (21) arranged in sequence in the first direction, comprising: The first cavity is configured with four battery columns (21) arranged in sequence in the first direction, and each battery column (21) is configured with eight battery packs arranged in sequence in the second direction.

21. The layout method of an energy storage device (100) according to claim 15, wherein, Each battery pack (211) is configured with a plurality of battery cells (212), the plurality of battery cells (212) are arranged in an M-row and N-column array, M≥2 and M is a positive integer, N≥2 and N is a positive integer, and each battery cell (212) has a large face facing the first direction. Wherein, the row direction is a third direction, the column direction is the first direction, and the third direction is the width direction of the standardized box (10).

22. The layout method of an energy storage device (100) according to claim 21, wherein, The M battery cells (212) in the first column are connected in sequence along the third direction, and the second battery cell (212) to the M battery cell (212) in any one of the second column to the N column are connected in sequence. The first battery cell (212) in the gth column is connected in series with the first battery cell (212) in the g+1th column, and the M battery cell (212) in the gth column is connected in series with the M battery cell (212) in the g+1th column, g is an odd number and 1≤g≤N-1.

23. The layout method of an energy storage device (100) according to claim 22, wherein, The first battery cell (212) in the ith column is connected in series with the first battery cell (212) in the i+1th column, and the second battery cell (212) in the ith column is connected in series with the second battery cell (212) in the i+1th column, i is an even number and 2≤i≤N-1. The size of the standardized box (10) in the first direction is a, the size of the standardized box (10) in the third direction is b, and the size of the standardized box (10) in the second direction is c, which satisfies: 6052mm≤a≤6064mm, 2433mm≤b≤2443mm, and 2571mm≤c≤2891mm. The spacing of the two adjacent battery columns (21) in the first direction is f, which satisfies: 50mm≤f≤120mm.

24. The layout method of an energy storage device (100) according to claim 22, wherein, In each battery column (21), the spacing of the two adjacent battery packs (211) in the second direction is h3, which satisfies: 14mm≤h3≤17mm.

25. The layout method of an energy storage device (100) according to claim 24, wherein, ​ 26. The layout method of an energy storage device (100) according to claim 24, wherein, ​ 27. The layout method of an energy storage device (100) according to claim 24, wherein, The size of the electric control module (30) in the third direction is configured as w1, the size of the thermal management module (40) in the third direction is configured as w2, and w1≤2233mm and w2≤2233mm are met.

28. The layout method of an energy storage device (100) according to claim 24, wherein, The size of the battery module (20) in the first direction is T1, the size of the electric control module (30) in the first direction is T2, the size of the thermal management module (40) in the first direction is T3, and the size of the fire-fighting module (50) in the first direction is T4, and T1≤5858mm, T2≤5858mm, T3≤5858mm, and T4≤5858mm are met.

29. The layout method of an energy storage device (100) according to claim 24, wherein, The plurality of battery cells (212) are arranged in an array of 16 rows and 6 columns, the battery cells (212) are standard-sized battery cells, and the capacity of the battery cells (212) is A, and 588 Ah≤A≤660 Ah is met.

30. The layout method of the energy storage device (100) according to claim 29, wherein, The capacity of the battery pack is E1, the size of the battery pack in the first direction is W1, the size of the battery pack in the second direction is H1, and the size of the battery pack in the third direction is L1, and 195kWh≤E1≤220kWh, 1230mm≤W1≤1400mm, 240mm≤H1≤280mm, and 2000mm≤L1≤2300mm are met.

31. The layout method of the energy storage device (100) according to claim 30, wherein, 32. The layout method of the energy storage device (100) according to claim 31, wherein, The energy storage device (100) has an electric quantity configuration E2, which satisfies: 6.26 MWh≤E2≤7.10 MWh, and / or, 420KW / m 2 ≤E2 / (a×b) ≤500KW / m 2 . The layout method of the energy storage device (100) according to any one of claims 1 to 32 is applied to form the energy storage device (100), and the energy storage device (100) comprises: A = 660 Ah, satisfying: 219 kWh ≤ E1≤ 220 kWh, 6.9 MWh ≤ E2≤ 7.1 kWh, 475.6 KW / m 2 ≤ E2 / (a x b) ≤ 476 KW / m 2 .

33. An energy storage device (100) characterized by, a standardized box (10) having a first cavity and a second cavity arranged in sequence along a first direction; a plurality of battery columns (21) arranged in sequence along the first direction in the first cavity, and the plurality of battery columns (21) occupy the space of the first cavity in the first direction; a thermal management module (40) arranged in the second cavity and an electric control module (30) arranged at the bottom of the first cavity. The first direction is the length direction of the standardized box (10). ​

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