energy storage device

Abstract

The utility model belongs to the technical field of energy storage system discloses a kind of energy storage device, including at least one energy storage unit.Each energy storage unit includes two energy storage cabinets oppositely arranged in the first direction, and the energy storage cabinet includes battery plug-in box, cabinet and the cabinet door connected to cabinet;Battery plug-in box is arranged in cabinet, and dehumidification mechanism is arranged on cabinet door;The cabinet door of the two energy storage cabinets of energy storage unit is oppositely arranged and is spaced, and the orthogonal projection of dehumidification mechanism on the cabinet door in the first direction on the two cabinet doors of energy storage unit is not intersected;In the two energy storage cabinets of energy storage unit, the spacing of dehumidification mechanism on one cabinet door and another cabinet door in the first direction is a millimeter, and the value range of a is 2800-3000.The energy storage device provided by the utility model has higher space utilization rate and better dehumidification effect.

Description

Technical Field

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

[0002] Energy storage systems typically consist of multiple containers arranged in multiple rows. Due to the complexity of the environment in which energy storage systems operate, dehumidification devices need to be installed on each container to reduce humidity inside the container. This reduces the risk of insulation failure, thermal runaway, and other problems for the battery packs inside the container, thereby ensuring the lifespan of the battery packs and the safety of the energy storage system.

[0003] In related technologies, a reserved space is set between the rear side walls of two adjacent containers. The reserved space is used to place the dehumidification device installed on the rear side wall of the container. In addition, a reserved space is also required between the container doors to facilitate opening and closing the doors. As a result, the gap between the containers is relatively large. Although this is beneficial to improve the dehumidification effect, the space utilization rate of the energy storage system is low and the energy density needs to be improved. Utility Model Content

[0004] The purpose of this invention is to provide an energy storage device to solve the technical problem of space utilization in the prior art.

[0005] Based on the above concept, the technical solution adopted by this utility model is as follows:

[0006] An energy storage device includes at least one energy storage unit; each energy storage unit includes two energy storage cabinets arranged opposite each other in a first direction, and the energy storage cabinet includes a battery box, a cabinet body, and a cabinet door connected to the cabinet body; the battery box is disposed in the cabinet body, and the cabinet door is provided with a dehumidification mechanism.

[0007] The doors of the two energy storage cabinets of the energy storage unit are arranged opposite each other and spaced apart. The dehumidification mechanisms on the two cabinet doors of the energy storage unit do not intersect on the orthographic projection of the doors along the first direction.

[0008] In the two energy storage cabinets of the energy storage unit, the distance between the dehumidification mechanism on one cabinet door and the distance between the other cabinet door in the first direction is 'a' millimeters, where 'a' ranges from 2800 to 3000.

[0009] The beneficial effects of the above technical solution are as follows:

[0010] The energy storage unit includes two energy storage cabinets arranged opposite each other in a first direction. Each cabinet door is equipped with a dehumidification mechanism. The cabinet doors of one energy storage cabinet and the other cabinet are arranged opposite each other, and the orthographic projections of the dehumidification mechanisms on the two cabinet doors along the first direction do not intersect. This allows the two dehumidification mechanisms to make full use of the gap between the two cabinet doors. The size of the gap between the two cabinet doors in the first direction can be less than the sum of the sizes of the two dehumidification mechanisms in the first direction, thereby effectively improving the space utilization rate of the energy storage device. The distance between the dehumidification mechanism on one cabinet door and the other cabinet door in the first direction meets the specified range to ensure that the dehumidification mechanism has sufficient dehumidification space, thereby ensuring the dehumidification effect and improving the safety of the energy storage device. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the energy storage unit provided in an embodiment of the present invention;

[0013] Figure 2 This is a schematic diagram of the structure of the energy storage cabinet provided in this embodiment of the utility model;

[0014] Figure 3 This is a structural schematic diagram of an energy storage cabinet without a door shown, provided in an embodiment of this utility model;

[0015] Figure 4 This is an assembly diagram of the cabinet door and dehumidification mechanism provided in an embodiment of this utility model;

[0016] Figure 5 This is a schematic diagram of the structure of two energy storage cabinets provided in this embodiment of the utility model;

[0017] Figure 6 This is a structural schematic diagram of an energy storage unit with multiple energy storage cabinets provided in an embodiment of this utility model.

[0018] In the picture:

[0019] 1. Energy storage unit; 11. Energy storage cabinet; 110. Inner cavity; 111. Battery box; 112. Cabinet body; 113. Cabinet door; 12. Dehumidification mechanism; 13. Liquid cooling mechanism; X, first direction; Y, second direction; Z, third direction. Detailed Implementation

[0020] To make the technical problem solved by this utility model, the technical solution adopted, and the technical effect achieved clearer, the technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely for explaining this utility model and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts related to this utility model are shown in the accompanying drawings, not all of them.

[0021] It should be understood that the phrase "one embodiment" or "an embodiment" throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of the present invention. Therefore, "in one embodiment" or "in an embodiment" appearing throughout the specification do not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0022] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0023] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature. In the description of this embodiment, unless otherwise specified, "multiple" specifically refers to two or more.

[0025] In the description of this embodiment, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., are based on the orientation or positional relationships shown in the accompanying drawings and are only for ease of description and simplification of operation. They do not 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 utility model. Furthermore, the terms "first" and "second" are merely used for distinction in description and have no special meaning.

[0026] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on the other component or it can be located in between the component.

[0027] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0028] During the operation of an energy storage system, a significant amount of heat is generated within the battery cabinet. To cool the battery cabinet, the system typically incorporates a liquid cooling mechanism. However, when the humidity inside the battery cabinet is high, the moisture in the air will condense and produce a large amount of condensate after the liquid cooling mechanism is activated. This condensate can lead to malfunctions in the energy storage system, threatening its safe operation.

[0029] In related technologies, dehumidification equipment is typically installed in battery cabinets, often employing compression refrigeration and condensation technology. During dehumidification, the equipment cools the air inside the battery cabinet below its dew point, causing moisture to condense and precipitate out, resulting in dry air. This dry air is then introduced into the battery cabinet to achieve dehumidification. However, dehumidification equipment in these technologies is usually installed on the rear wall of the battery cabinet, requiring gaps between cabinets and on the cabinet doors. This leads to low space utilization in the energy storage system, indicating room for improvement.

[0030] Based on the above problems, this embodiment provides an energy storage device that can effectively improve space utilization. While saving space, it can also ensure a large dehumidification space, thereby ensuring the dehumidification effect.

[0031] For example, such as Figures 1 to 6As shown, the energy storage device includes at least one energy storage unit 1. It should be noted that an energy storage unit refers to a device that stores energy through a medium or equipment and releases it when needed, mainly used for peak shaving, frequency regulation, and backup functions in power systems. For example, an energy storage unit refers to a basic functional unit that integrates a battery pack, battery management system, thermal management system, energy conversion system, control system, and related auxiliary facilities such as temperature control, fire protection, and dehumidification into a whole, capable of independently completing the storage, release, and management of electrical energy. The battery pack is the core of the energy storage unit, responsible for directly storing electrical energy. Typically, multiple battery cells with similar capacity and internal resistance can form a battery pack through series, parallel, or mixed connection. The battery management system is responsible for monitoring the voltage, current, temperature, and other states of the battery pack, performing equalization management, and providing protection against overcharging, over-discharging, and short circuits to ensure safe, efficient, and long-life operation of the batteries. The energy conversion system is commonly known as an "energy storage converter." Its core function is to realize the mutual conversion between alternating current (AC) and direct current (DC). For example, during charging, it converts the AC power from the grid into DC power to charge the battery pack. During discharge, the direct current (DC) from the battery is converted into alternating current (AC) and supplied to the power grid or load. The control system is the "central nervous system" of the entire unit. It receives external dispatch instructions or coordinates the operation of the battery management system and thermal management system according to preset strategies, determining when the unit charges, when discharges, and at what power. Auxiliary systems include temperature control systems and fire suppression systems. The temperature control system ensures that the battery always operates within its optimal temperature range and typically includes air conditioning, liquid cooling plates, and air ducts. The fire suppression system is equipped with combustible gas detectors and automatic fire extinguishing devices (such as perfluorohexanone and heptafluoropropane) to ensure safety.

[0032] For example, such as Figure 1 As shown, each energy storage unit 1 includes two energy storage cabinets 11 arranged opposite each other in the first direction X. The two energy storage cabinets 11 are arranged in the first direction X. The number of energy storage units 1 can be set according to actual needs, and this embodiment does not limit this. In this embodiment, the first direction X can be the width direction of the energy storage cabinets 11.

[0033] In one embodiment, such as Figure 1 and Figure 2 As shown, the energy storage cabinet 11 has an inner cavity 110. Furthermore, the energy storage cabinet 11 includes a cabinet body 112, a cabinet door 113, and battery boxes 111 disposed within the cabinet body 112. Multiple shelves (not shown) can be arranged at intervals from top to bottom within the cabinet body 112, and multiple battery boxes 111 can be provided, each battery box 111 being supported on one shelf to fully utilize the space within the cabinet body 112.

[0034] Optionally, the battery enclosure 111 may include a housing and a battery apparatus disposed within the housing. The battery apparatus may include one or more battery cell assemblies for providing voltage and capacity. A battery cell assembly may include multiple battery cells connected in series, parallel, or a combination of these cells via a busbar. As an example, the battery cell assembly may be a battery module, which can be housed within the housing by fixing the battery module to the housing. Alternatively, the battery cell assembly may be housed within the housing by directly fixing multiple battery cells to the housing.

[0035] For example, such as Figure 1 As shown, each energy storage cabinet 11 is equipped with a dehumidification mechanism 12 on its cabinet door 113. The dehumidification mechanism 12 is used to dehumidify the air inside the corresponding cabinet 112, thereby reducing the humidity of the air inside the cabinet 112, significantly reducing or even eliminating condensation in the energy storage cabinet 11, and thus improving the safety of the energy storage device. In this embodiment, the dehumidification mechanism 12 is provided in a one-to-one correspondence with the energy storage cabinet 11, that is, each energy storage cabinet 11 is equipped with one dehumidification mechanism 12.

[0036] In at least one possible implementation, the cabinet door 113 is provided with a mounting hole (not shown in the figure), and the dehumidification mechanism 12 is installed in the mounting hole, so that the dehumidification mechanism 12 can communicate with the inside of the energy storage cabinet 11, thereby dehumidifying the gas inside the energy storage cabinet 11.

[0037] In one implementation, such as Figure 1 As shown, the doors 113 of the two energy storage cabinets 11 of each energy storage unit 1 are arranged opposite each other and spaced apart, that is, the two doors 113 of each energy storage unit 1 face each other. The gap between the two doors 113 facilitates the opening and closing of the doors 113. For each energy storage unit 1, the orthographic projections of the dehumidification mechanisms 12 on the doors 113 of the two energy storage cabinets 11 along the first direction X do not intersect on the doors 113, that is, the orthographic projections of the two dehumidification mechanisms 12 along the first direction X on the doors 113 do not overlap or are staggered. This arrangement avoids the two dehumidification mechanisms 12 occupying too much space due to being directly opposite each other in the first direction X.

[0038] And please continue to see Figure 1 In the two energy storage cabinets 11 of the energy storage unit 1, the distance between the dehumidification mechanism 12 on one cabinet door 113 and the distance between the other cabinet door 113 in the first direction X is 'a' millimeters, where 'a' ranges from 2800 to 3000. This arrangement ensures that the distance between the dehumidification mechanism 12 and the other cabinet door 113 is neither too large nor too small, providing sufficient dehumidification space for the dehumidification mechanism 12 while also saving space.

[0039] The distance 'a' between the dehumidification mechanism 12 on one cabinet door 113 and the other cabinet door 113 in the first direction X cannot be too large. While a larger distance would provide more dehumidification space, it would also result in an excessively large gap between the two energy storage cabinets 11, thus affecting space utilization. Conversely, the distance 'a' between the dehumidification mechanism 12 on one cabinet door 113 and the other cabinet door 113 in the first direction X cannot be too small. A smaller distance would result in insufficient dehumidification space for the dehumidification mechanism 12, thus affecting the dehumidification effect. For example, the value of 'a' can be 2800, 2850, 2900, 2950, ​​3000, etc.

[0040] The energy storage device provided in this embodiment includes an energy storage unit 1 comprising two energy storage cabinets 11 arranged opposite each other in the first direction X. Each energy storage cabinet 11 has a dehumidification mechanism 12 on its cabinet door 113. The cabinet door 113 of one energy storage cabinet 11 is arranged opposite to the cabinet door 113 of the other energy storage cabinet 11, and the orthographic projections of the dehumidification mechanisms 12 on the cabinet doors 113 along the first direction X do not intersect. This allows the two dehumidification mechanisms 12 to fully utilize the gap between the two cabinet doors 113. The size of the gap between the two cabinet doors 113 in the first direction X can be smaller than the sum of the sizes of the two dehumidification mechanisms 12 in the first direction X, thereby effectively improving the space utilization rate of the energy storage device. The distance between the dehumidification mechanism 12 on one cabinet door 113 and the other cabinet door 113 in the first direction X meets the specified range to ensure that the dehumidification mechanism 12 has sufficient dehumidification space, thereby ensuring the dehumidification effect and improving the safety of the energy storage device.

[0041] In some optional embodiments, the dehumidification mechanism 12 may include a rotary dehumidifier for dehumidifying the air inside the cabinet 112. The rotary dehumidifier primarily dehumidifies through physical adsorption, consuming less electricity and reducing the power consumption of the energy storage device. For example, the rotary dehumidifier includes a dehumidifying rotor, which may contain microchannels coated with a porous adsorption material. The surface of the nanoscale microporous structure inside the porous adsorption material contains a large number of hydroxyl groups. When air passes through the dehumidifying rotor, the hydroxyl groups can combine with water molecules in the air through intermolecular attraction, causing the water molecules to be adsorbed onto the dehumidifying rotor. The rotary dehumidifier may also include a processing fan, which can be installed at the processing air inlet. When the rotary dehumidifier is installed on the cabinet door 113, the processing air inlet and processing air outlet can be located on opposite sides of the rotary dehumidifier. The processing fan draws air from the cabinet 112 through the processing air inlet, dehumidifies it through the dehumidifying rotor, and then discharges it through the processing air outlet.

[0042] In other embodiments, the dehumidification mechanism 12 may include energy-consuming devices such as a compressor and a condenser. The compressor is used to compress the refrigerant, and the condenser is used to cool the compressed refrigerant, so as to cool the air in the battery cabinet through the cooled refrigerant, thereby achieving the purpose of dehumidification.

[0043] In at least one embodiment, such as Figure 1 As shown, in each energy storage unit 1, the distance between the dehumidification mechanism 12 on one cabinet door 113 and the dehumidification mechanism 12 on the other cabinet door 113 in the second direction Y is b mm. The value of b ranges from 750 to 850 mm. In this embodiment, the second direction Y is the height direction of the energy storage cabinet 11, and the first direction X is perpendicular to the second direction Y. By setting the distance between the two dehumidification mechanisms 12 of the energy storage unit 1 in the second direction Y to be within the range, and ensuring that the distance between the two dehumidification mechanisms 12 is within the range, the distance between them can balance dehumidification effect and space utilization.

[0044] It should be noted that b cannot be too large, as this would result in too large a distance between the dehumidification units 12, thus affecting the size and dehumidification effect of the dehumidification units 12. b cannot be too small, as this would result in the two dehumidification units 12 being too close together, causing mutual interference and affecting the dehumidification effect.

[0045] For example, the value of b can be 750, 760, 770, 780, 800, 820, 830, or 850.

[0046] The relative positional relationship of the two dehumidification mechanisms 12 of the energy storage unit 1 can be varied. This embodiment provides the following two examples.

[0047] In one embodiment, in the two energy storage cabinets 11 of the energy storage unit 1, at least a portion of the dehumidification mechanism 12 on one cabinet door 113 is opposite to the dehumidification mechanism 12 on the other cabinet door 113 in the second direction Y. That is, the orthographic projections of the two dehumidification mechanisms 12 along the second direction Y on a plane overlap. This arrangement allows the size of the dehumidification mechanism 12 in the first direction X to be larger, thereby meeting the installation requirements of the larger dehumidification mechanism 12 and ensuring the dehumidification effect of the dehumidification mechanism 12.

[0048] Alternatively, the two dehumidification mechanisms 12 of the energy storage unit 1 can be completely overlapped in the orthographic projection along the second direction Y on a plane. That is, the two dehumidification mechanisms 12 are arranged in the same longitudinal direction, so that the position of the dehumidification mechanism 12 on the cabinet door 113 is fixed in the direction perpendicular to the first direction X and the second direction Y. The only difference is that the position of the dehumidification mechanism 12 in the second direction Y is different. This can simplify the assembly process of the dehumidification mechanism 12 on the cabinet door 113, facilitate the batch assembly of the dehumidification mechanism 12 and the energy storage cabinet 11, and improve production efficiency.

[0049] In other embodiments, in the two energy storage cabinets 11 of the energy storage unit 1, the dehumidification mechanism 12 on one cabinet door 113 is offset from the dehumidification mechanism 12 on the other cabinet door 113 in the second direction Y. That is, the orthographic projections of the two dehumidification mechanisms 12 of the energy storage unit 1 along the second direction Y on a plane do not intersect. This allows for a larger space around each of the two dehumidification mechanisms 12, further reducing the mutual influence between the two dehumidification mechanisms 12.

[0050] Both of the above-mentioned energy storage units 1 can achieve the goals of improving space utilization and ensuring dehumidification effect, and the appropriate structure can be selected according to the needs.

[0051] In some alternative embodiments, such as Figure 4 As shown, for each energy storage cabinet 11, the distance between the dehumidification mechanism 12 on the cabinet door 113 and the bottom of the cabinet door 113 is d1 mm, and the value of d1 ranges from 690 to 750 mm. The value of d1 is within this range, ensuring dehumidification effect while preventing the dehumidification mechanism 12 from being too close to the bottom edge of the cabinet door 113. This minimizes the impact of the dehumidification mechanism 12 on the structural strength of the cabinet door 113, reducing the risk of deformation and improving the structural reliability of the energy storage cabinet 11. It should be noted that the distance between the dehumidification mechanism 12 on the cabinet door 113 and the bottom of the cabinet door 113 can refer to the minimum distance between the dehumidification mechanism 12 and the bottom edge of the cabinet door 113.

[0052] It should be noted that the value of d1 cannot be too small. If it is too small, the dehumidification mechanism 12 will be too close to the bottom edge of the cabinet door 113, which will increase the risk of deformation of the cabinet door 113. The value of d1 cannot be too large. If it is too large, the dehumidification mechanism 12 will be close to the top of the cabinet door 113, which will affect the arrangement of the two dehumidification mechanisms 12. If the size of the dehumidification mechanism 12 is reduced, the dehumidification effect will also be affected.

[0053] For example, the value of d1 can be 690, 700, 710, 720, 750, etc.

[0054] In one possible implementation, the distance between the dehumidification mechanism 12 and the side edge of the cabinet door 113 is neither too large nor too small. For example, as... Figure 4 As shown, the distance between the dehumidification mechanism 12 and the side edge of the cabinet door 113 is d2 mm, and the value of d2 ranges from 3650 to 3750 mm. The value of d2 is within this range, ensuring dehumidification effect while preventing the dehumidification mechanism 12 from being too close to the side edge of the cabinet door 113. This minimizes the impact of the dehumidification mechanism 12 on the structural strength and support strength of the cabinet door 113, reducing the risk of deformation of the cabinet door 113 and improving the structural reliability of the energy storage cabinet 11. It should be noted that the distance between the dehumidification mechanism 12 and the side edge of the cabinet door 113 can refer to the minimum distance between them.

[0055] It should be noted that the value of d2 cannot be too small. If it is too small, the dehumidification mechanism 12 will be too close to the side edge of the cabinet door 113, which will increase the risk of deformation of the cabinet door 113. The value of d2 cannot be too large. If it is too large, the size of the dehumidification mechanism 12 will need to be reduced, which will affect the dehumidification effect.

[0056] For example, the value of d2 can be 3650, 3680, 3690, 3700, 3710, 3730, 3750, etc.

[0057] In at least one embodiment, such as Figure 4 As shown, the distance between the dehumidification mechanism 12 and the top of the cabinet door 113 is d3, and the value of d3 ranges from 1696 to 1756. d3 is within this range, ensuring dehumidification effectiveness while preventing the dehumidification mechanism 12 from being too close to the top edge of the cabinet door 113. This minimizes the impact of the dehumidification mechanism 12 on the structural strength of the cabinet door 113, reducing the risk of deformation and improving the structural reliability of the energy storage cabinet 11. It should be noted that the distance between the top of the dehumidification mechanism 12 and the top of the cabinet door 113 can refer to the minimum distance between the top edges of the dehumidification mechanism 12 and the cabinet door 113.

[0058] It should be noted that the value of d3 cannot be too small. If it is too small, the dehumidification mechanism 12 will be too close to the top edge of the cabinet door 113, which will increase the risk of deformation of the cabinet door 113. The value of d3 cannot be too large. If it is too large, the dehumidification mechanism 12 will be close to the bottom of the cabinet door 113, which will affect the arrangement of the two dehumidification mechanisms 12. If the size of the dehumidification mechanism 12 is reduced, the dehumidification effect will also be affected.

[0059] For example, the value of d3 can be 1696, 1700, 1710, 1720, 1730, 1740, 1756, etc.

[0060] In one possible implementation, the projected area of ​​the dehumidification mechanism 12 along the first direction X on the cabinet door 113 is S1, where S1 is in square millimeters; the area of ​​the cabinet door 113 is S2, where S2 is in square millimeters. Furthermore, the ratio of S1 / S2 ranges from 0.07 to 0.1. The ratio of the area of ​​the dehumidification mechanism 12 to the area of ​​the cabinet door 113 is within this range, ensuring high space utilization while maintaining a relatively small volume for the dehumidification mechanism 12, thus enabling it to achieve good dehumidification performance. It should be noted that the area of ​​the cabinet door 113 can be the area of ​​the cross-section of the cabinet door 113 perpendicular to the first direction X.

[0061] In this embodiment, the value of S1 / S2 cannot be too large. If it is too large, it means that the dehumidification mechanism 12 is too large. Although it can have a high dehumidification effect, it will affect the supporting strength and structural strength of the cabinet door 113, increase the risk of damage to the cabinet door 113, and also affect the space utilization. The value of S1 / S2 cannot be too small. If it is too small, it means that the size of the dehumidification mechanism 12 is too small, which will affect the dehumidification effect on the air inside the cabinet 112, thus posing a high safety hazard.

[0062] For example, the value of S1 / S2 can be 0.07, 0.08, 0.09, 0.1, etc.

[0063] In at least one embodiment, the dehumidification mechanism 12 is disposed at the center of the cabinet door 113 in the third direction Z. Here, the third direction Z is the length direction of the energy storage cabinet 11, meaning that the first direction X, the second direction Y, and the third direction Z are all perpendicular to each other. By disposing of the dehumidification mechanism 12 at the center of the cabinet door 113 in the third direction Z, the space utilization of the energy storage device is improved, and the dehumidification mechanism 12 can be closer to the geometric center of the cabinet door 113. This improves the uniformity of dehumidification inside the energy storage cabinet 11, further enhancing the dehumidification effect and reducing the problem of dehumidification blind spots.

[0064] It is understandable that the dehumidification mechanism 12 may also be located off the cabinet door 113 in the middle of the third direction Z. For example, the dehumidification mechanism 12 may be closer to the battery compartment 111 side, so as to be mainly used for dehumidification at the battery compartment 111. This embodiment does not limit this.

[0065] Optionally, one or more energy storage units 1 may be provided; this embodiment does not limit this. Figure 6 This is a schematic diagram showing that energy storage unit 1 has three units. (For example...) Figure 6As shown, multiple energy storage units 1 are arranged along the first direction X, and two adjacent energy storage cabinets 11 of two adjacent energy storage units 1 are arranged side by side in the first direction X. This arrangement eliminates gaps between adjacent energy storage units 1, further improving space utilization and ensuring that the energy storage device has a high energy density.

[0066] It should be noted that, as Figure 5 As shown, the two energy storage cabinets 11 that are adjacent to each other in the first direction X are arranged in a close manner. This means that the rear sides of the two energy storage cabinets 11 that are close to each other in the two energy storage units 1 are attached to each other and form a mutually dependent state, which can also improve the stability of the energy storage cabinets 11.

[0067] Please continue reading Figure 6 The dehumidification mechanisms 12 on two energy storage cabinets 11 opposite each other in the first direction X are arranged opposite each other in the first direction X, or can be understood as symmetrically arranged. The dehumidification mechanisms 12 on two energy storage cabinets 11 opposite each other in the first direction X are also arranged opposite each other in the first direction X, or can be understood as symmetrically arranged. This arrangement facilitates mass production of energy storage devices and improves production efficiency.

[0068] Optionally, such as Figure 3 As shown, the energy storage cabinet 11 provided in this embodiment may be equipped with a liquid cooling mechanism 13. The liquid cooling mechanism 13 is used to cool the battery compartment 111, reducing the risk of thermal runaway in the energy storage device. The cooperation between the liquid cooling mechanism 13 and the dehumidification mechanism 12 can ensure the safety and reliability of the energy storage device.

[0069] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. An energy storage device, characterized in that, It includes at least one energy storage unit (1); each of the energy storage units (1) includes two energy storage cabinets (11) arranged opposite each other in a first direction (X), the energy storage cabinet (11) includes a battery box (111), a cabinet body (112) and a cabinet door (113) connected to the cabinet body (112); the battery box (111) is disposed inside the cabinet body (112), and the cabinet door (113) is provided with a dehumidification mechanism (12); The cabinet doors (113) of the two energy storage cabinets (11) of the energy storage unit (1) are arranged opposite to each other and spaced apart. The dehumidification mechanism (12) on the two cabinet doors (113) of the energy storage unit (1) does not intersect the orthographic projection of the dehumidification mechanism (12) on the cabinet door (113) along the first direction (X). In the two energy storage cabinets (11) of the energy storage unit (1), the distance between the dehumidification mechanism (12) on one cabinet door (113) and the other cabinet door (113) in the first direction (X) is a mm, where a ranges from 2800 to 3000.

2. The energy storage device according to claim 1, characterized in that, In the two energy storage cabinets (11) of the energy storage unit (1), the dehumidification mechanism (12) on one cabinet door (113) and the dehumidification mechanism (12) on the other cabinet door (113) are spaced apart in the second direction (Y) by b millimeters, where b ranges from 750 to 850; wherein, the second direction (Y) is the height direction of the energy storage cabinet (11).

3. The energy storage device according to claim 2, characterized in that, In the two energy storage cabinets (11) of the energy storage unit (1), at least a portion of the dehumidification mechanism (12) on one cabinet door (113) is opposite to the dehumidification mechanism (12) on the other cabinet door (113) in a second direction (Y); wherein the second direction (Y) is the height direction of the energy storage cabinet (11).

4. The energy storage device according to claim 2, characterized in that, In the two energy storage cabinets (11) of the energy storage unit (1), the dehumidification mechanism (12) on one cabinet door (113) and the dehumidification mechanism (12) on the other cabinet door (113) are staggered in the second direction (Y); wherein, the second direction (Y) is the height direction of the energy storage cabinet (11).

5. The energy storage device according to claim 1, characterized in that, The distance between the dehumidification mechanism (12) and the bottom of the cabinet door (113) is d1 mm, and the value of d1 ranges from 690 to 750.

6. The energy storage device according to claim 1, characterized in that, The distance between the dehumidification mechanism (12) and the side edge of the cabinet door (113) is d2 mm, and the value of d2 ranges from 3650 to 3750.

7. The energy storage device according to claim 1, characterized in that, The distance between the dehumidification mechanism (12) and the top of the cabinet door (113) is d3 mm, and the value of d3 ranges from 1696 to 1756.

8. The energy storage device according to claim 1, characterized in that, The area of ​​the dehumidification mechanism (12) projected onto the cabinet door (113) along the first direction (X) is S1, in square millimeters, and the area of ​​the cabinet door (113) is S2, in square millimeters. The value range of S1 / S2 is 0.07-0.

1.

9. The energy storage device according to claim 1, characterized in that, The dehumidification mechanism (12) is located in the middle of the cabinet door (113) in the third direction (Z); the third direction (Z) is the length direction of the energy storage cabinet (11).

10. The energy storage device according to claim 1, characterized in that, The energy storage unit (1) is provided in multiple ways along the first direction (X), and the two energy storage cabinets (11) of two adjacent energy storage units (1) are adjacent to each other.

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