Energy storage device, energy storage system and charging network

Abstract

The embodiment of the utility model provides an energy storage device, an energy storage system and a charging network. The first air cooling module is arranged in the energy storage box body, the first air cooling module comprises a first static pressure box and a first dehumidifier, the first static pressure box is provided with a first air inlet and a first air outlet, and the first air inlet and the first air outlet are arranged in the gravity direction; the second air cooling module is arranged in the energy storage box body, the first air cooling module and the second air cooling module are arranged in a spaced mode in the first direction, the second air cooling module comprises a second static pressure box and a second dehumidifier, the second static pressure box is provided with a second air inlet and a second air outlet, and the second air outlet and the second air inlet are arranged in the gravity direction; in the first direction, the first battery device group is located between the first air inlet and the second air outlet; the second battery device group is located below the first battery device group in the gravity direction, and the second battery device group is located between the first air outlet and the second air inlet in the first direction. According to the technical scheme, the manufacturing cost is low.

Description

Technical Field

[0001] This application relates to the field of energy storage technology, and more specifically, to an energy storage device, an energy storage system, and a charging network. 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 for storing electrical energy, energy storage devices store electrical energy by charging or discharging it, or supply the stored energy to electrical devices. 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] In the development of energy storage devices, reducing manufacturing costs is an issue that cannot be ignored. Therefore, how to reduce the manufacturing cost of energy storage devices is a technical problem that requires continuous improvement in energy storage technology. Utility Model Content

[0004] This application provides an energy storage device, an energy storage system, and a charging network, which have low manufacturing costs.

[0005] This application is achieved through the following technical solution:

[0006] In a first aspect, embodiments of this application provide an energy storage device, which includes an energy storage housing, a first air-cooled module, a second air-cooled module, a first battery pack, and a second battery pack. The first air-cooled module is disposed within the energy storage housing and includes a first static pressure chamber and a first dehumidifier. The first dehumidifier is disposed within the first static pressure chamber, and the side of the first static pressure chamber facing the second air-cooled module has a first air inlet and a first air outlet, which are arranged along the direction of gravity. The second air-cooled module is disposed within the energy storage housing, and the first and second air-cooled modules are spaced apart along a first direction. The second air-cooled module includes a second static pressure chamber and a second dehumidifier, which is disposed within the second static pressure chamber. The static pressure box has a second air inlet and a second air outlet on the side facing the first air-cooling module. The second air outlet and the second air inlet are arranged along the direction of gravity, and the first direction is perpendicular to the direction of gravity. The first battery pack is disposed in the energy storage box and is located between the first air inlet and the second air outlet along the first direction. The second battery pack is disposed in the energy storage box and is located below the first battery pack along the direction of gravity. The second battery pack is located between the first air outlet and the second air inlet along the first direction.

[0007] According to the energy storage device of this application embodiment, a first air-cooled module and a second air-cooled module are spaced apart along a first direction. A first battery pack is located between the first air inlet of the first air-cooled module and the second air outlet of the second air-cooled module, and a second battery pack is located between the first air outlet of the first air-cooled module and the second air inlet of the second air-cooled module. A first dehumidifier is disposed in a first static pressure box. The fan of the first dehumidifier draws hot air into the first static pressure box through the first air inlet, generating cold air while dehumidifying the hot air. The cold air is discharged from the first static pressure box through the first air outlet, so that the first air-cooled module can absorb heat from the first battery pack through the first air inlet and deliver cold air to the second battery pack through the first air outlet. A second dehumidifier is disposed in the second air outlet of the first air-cooled module. Inside the plenum chamber, the fan of the second dehumidifier draws hot air into the plenum chamber through the second air inlet, dehumidifying the hot air while generating cool air. This cool air is then discharged into the plenum chamber through the second air outlet. This allows the second air-cooling module to absorb heat from the second battery pack through the second air inlet and deliver cool air to the first battery pack through the second air outlet. The combined use of the first and second dehumidifiers creates an air-cooled circulation within the energy storage chamber, facilitating heat dissipation for both the first and second battery packs. Compared to a liquid cooling system, this application eliminates the liquid cooling unit and piping, reducing manufacturing costs and energy consumption. It also improves space utilization within the energy storage chamber and increases the energy density of the energy storage device. Furthermore, the first plenum chamber balances airflow, minimizing differences in airflow velocity at each first air outlet and reducing noise. Similarly, the second plenum chamber balances airflow, minimizing differences in airflow velocity at each second air outlet and reducing noise.

[0008] According to some embodiments of this application, a first static pressure chamber includes a first sidewall, a first air inlet and a first air outlet disposed on the first sidewall; a second static pressure chamber includes a second sidewall, a second air inlet and a second air outlet disposed on the second sidewall, the second sidewall and the first sidewall being disposed opposite to each other along a first direction; along the first direction, the orthogonal projection of the first dehumidifier on the first sidewall at least partially covers the first air inlet; along the opposite direction of the first direction, the orthogonal projection of the second dehumidifier on the second sidewall at least partially covers the second air inlet.

[0009] In the above scheme, the first dehumidifier is located near the first air inlet, which facilitates the extraction of air by the fan of the first dehumidifier, and the removal of some of the heat from the first battery device through air circulation, thus facilitating air circulation; the second dehumidifier is located near the second air inlet, which facilitates the extraction of air by the fan of the second dehumidifier, and the removal of some of the heat from the second battery device through air circulation, thus facilitating air circulation.

[0010] According to some embodiments of this application, the first air-cooled module further includes a first pipe, which connects the first dehumidifier and the first air outlet; and / or, the second air-cooled module further includes a second pipe, which connects the second dehumidifier and the second air outlet.

[0011] In the above scheme, the first duct can guide the cold air output by the first dehumidifier to the first air outlet, which facilitates the uniform flow of cold air from the first air outlet. The second duct can guide the cold air output by the second dehumidifier to the second air outlet, which facilitates the uniform flow of cold air from the second air outlet.

[0012] According to some embodiments of this application, any of the following conditions are met: 1) there are multiple first air inlets, and the multiple first air inlets are arranged in a matrix; 2) there are multiple first air outlets, and the multiple first air outlets are arranged in a matrix; 3) there are multiple second air inlets, and the multiple second air inlets are arranged in a matrix; 4) there are multiple second air outlets, and the multiple second air outlets are arranged in a matrix.

[0013] In the above scheme, by setting the number of first air inlets to multiple, hot air can enter the first static pressure box from multiple locations, which is conducive to the airflow having a high flow rate and uniform distribution.

[0014] By setting the number of first air outlets to multiple, it is beneficial for cold air to leave the first static pressure box from multiple locations, which in turn allows the airflow to have a higher velocity and a more uniform distribution.

[0015] By setting the number of second air inlets to multiple, hot air can enter the second static pressure box from multiple locations, which is conducive to the airflow having a high flow rate and uniform distribution.

[0016] By setting the number of second air outlets to multiple, it is beneficial for cold air to leave the second static pressure box from multiple locations, which in turn allows the airflow to have a higher velocity and a more uniform distribution.

[0017] According to some embodiments of this application, a first static pressure box includes a first sidewall, a first air inlet and a first air outlet disposed on the first sidewall, and an energy storage device further includes a first flow guide baffle, one end of which is connected to the outer surface of the first sidewall, and the first flow guide baffle is located between the first air inlet and the first air outlet along the direction of gravity; a second static pressure box includes a second sidewall, a second air inlet and a second air outlet disposed on the second sidewall, the second sidewall and the first sidewall are disposed opposite to each other along a first direction, and the energy storage device further includes a second flow guide baffle, one end of which is connected to the outer surface of the second sidewall, and the second flow guide baffle is located between the second air outlet and the second air inlet along the direction of gravity.

[0018] In the above scheme, the first baffle separates the first air inlet and the first air outlet, which can reduce the risk of cold air short-circuiting between the first air outlet and the first air inlet; the second baffle separates the second air inlet and the second air outlet, which can reduce the risk of cold air short-circuiting between the second air outlet and the second air inlet.

[0019] According to some embodiments of this application, the energy storage device further includes a third battery device group located between the first battery device group and the second battery device group along the direction of gravity. The third battery device group includes the first battery device and the second battery device located at both ends in a first direction. The other end of the first flow guide baffle is connected to the first battery device, and the other end of the second flow guide baffle is connected to the second battery device.

[0020] In the above scheme, the third battery device group separates the first battery device group and the second battery device group. The two ends of the first guide baffle are respectively connected to the first side wall and the first battery device to guide the cold air output from the first air outlet toward the second battery device group, so as to cool down the second battery device group and the third battery device group. The two ends of the second guide baffle are respectively connected to the second side wall and the second battery device to guide the cold air output from the second air outlet toward the first battery device group, so as to cool down the first battery device group and the third battery device group.

[0021] According to some embodiments of this application, the third battery device group includes a plurality of battery devices spaced apart along a first direction; the third battery device group also includes a third flow guide baffle, which connects two adjacent battery devices in the third battery device group in the first direction.

[0022] In the above scheme, a third baffle is set on the basis of the first baffle and the second baffle to further guide the flow direction of the cold air output from the first air outlet and the cold air output from the second air outlet, which is conducive to cooling the second battery device group and the first battery device group and improving the cooling effect.

[0023] According to some embodiments of this application, the multiple battery devices in the first battery device group are arranged in M ​​rows and N columns, each row of battery devices includes multiple battery devices spaced apart along a first direction, and each column of battery devices includes multiple battery devices spaced apart along the direction of gravity; the first battery device group also includes a fourth flow guide baffle, which connects two adjacent battery devices in the same row.

[0024] In the above scheme, by setting a fourth flow guide baffle, a flow channel is formed between two adjacent rows of battery devices in the direction of gravity, so that each battery device in the first battery device group can exchange heat with the cold air output from the second air outlet, which is beneficial to cooling the first battery device group.

[0025] According to some embodiments of this application, the multiple battery devices in the second battery device group are arranged in P rows and Q columns, each row of battery devices includes multiple battery devices spaced apart along a first direction, and each column of battery devices includes multiple battery devices spaced apart along the direction of gravity; the second battery device group also includes a fifth flow guide baffle, which connects two adjacent battery devices in the same row.

[0026] In the above scheme, by setting a fifth baffle, each battery device in the second battery device group can exchange heat with the cold air output from the first air outlet, which is beneficial to cooling the second battery device group.

[0027] According to some embodiments of this application, both the first battery device group and the second battery device group include multiple battery devices. Each battery device includes a battery housing and individual battery cells disposed within the battery housing. The battery housing carries the individual battery cells, and the top of the battery housing is open.

[0028] In the above scheme, the battery box carries the battery cells, and the top of the battery cells is open, which can increase the heat dissipation area of ​​the battery cells and facilitate the heat dissipation of the battery device.

[0029] According to some embodiments of this application, the energy storage box includes a battery compartment and an electrical compartment. A first air-cooling module, a first battery pack, a second battery pack, and a second air-cooling module are disposed in the battery compartment; a control module is disposed in the electrical compartment.

[0030] In the above scheme, the first air-cooling module and the second air-cooling module are located inside the battery compartment, which is conducive to heat dissipation of the first battery device group and the second battery device group; and the first air-cooling module and the second air-cooling module do not occupy the space of the electrical compartment, so that the space occupancy rate of the electrical compartment is high.

[0031] Secondly, embodiments of this application also provide an energy storage system, which includes an energy storage converter and an energy storage device provided according to the first aspect of the present application, wherein the energy storage converter is used to electrically connect the power generation device and the energy storage device.

[0032] Thirdly, embodiments of this application also provide a charging network, which includes a charging pile and an energy storage device provided according to the first aspect of the present application, the energy storage device being used to provide electrical energy to the charging pile.

[0033] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0034] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of the structure of a charging network provided in some embodiments of this application;

[0036] Figure 2 This application provides schematic diagrams of the structure of an energy storage system according to some embodiments.

[0037] Figure 3 Schematic diagram of an energy storage device provided for some embodiments of this application;

[0038] Figure 4 This is a schematic diagram of the structure of an energy storage device provided in some embodiments of this application;

[0039] Figure 5 This is a schematic diagram of the structure of a first air-cooled module provided in some embodiments of this application;

[0040] Figure 6 This is a schematic diagram of the structure of the second air-cooled module provided in some embodiments of this application;

[0041] Figure 7 A schematic diagram of the structure of the first air-cooled module provided in some other embodiments of this application;

[0042] Figure 8 This is a schematic diagram of the structure of the second air-cooled module provided in some other embodiments of this application;

[0043] Figure 9 This is a schematic diagram of the structure of a battery device provided in some embodiments of this application;

[0044] Figure 10 This is a schematic diagram of the structure of an energy storage device provided for other embodiments of this application.

[0045] Icons: 1000 - Charging network; 2000 - Energy storage system; 3000 - Power generation device; 100 - Battery unit; 110 - Battery enclosure; 120 - Individual battery cell; 200 - Energy storage device; 210 - Energy storage enclosure; 210a - Battery compartment; 210b - Electrical compartment; 220 - First air-cooled module; 220a - First air inlet; 220b - First air outlet; 221 - First static pressure box; 221a - First side wall; 222 - First dehumidifier; 223 - First duct; 230 - Second air-cooled module; 230a - Second air inlet; 230b - Second... Air outlet; 231-Second static pressure box; 231a-Second side wall; 232-Second dehumidifier; 233-Second duct; 240-First battery pack; 241-Fourth baffle; 250-Second battery pack; 251-Fifth baffle; 260-Third battery pack; 261-First battery pack; 262-Second battery pack; 263-Third baffle; 270-First baffle; 280-Second baffle; 290-Control module; 300-Charging pile; 400-Energy storage converter; G-Gravity direction; X-First direction. Detailed Implementation

[0046] The embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to illustrate the principles of this application by way of example, but should not be used to limit the scope of this application, that is, this application is not limited to the described embodiments.

[0047] 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 description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having" and any variations thereof in the description, claims and foregoing drawings of this application are intended to cover non-exclusive inclusion.

[0048] The terms "first," "second," etc., in the specification, claims, or the accompanying drawings of this application are used to distinguish different objects, rather than to describe a specific order or primary / secondary relationship.

[0049] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0050] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0051] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0052] In this application, "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0053] The battery device mentioned in the embodiments of this application may include one or more battery cell assemblies for providing voltage and capacity. A battery cell assembly may include multiple battery cells, which are connected in series, parallel, or mixed connections via a busbar.

[0054] In some embodiments, a battery cell assembly is typically formed by arranging multiple battery cells; as an example, a battery cell assembly can be a battery module, which is formed by arranging and fixing multiple battery cells into a single module. As an example, a battery module can be formed by bundling multiple battery cells together with cable ties.

[0055] In some embodiments, the battery device may be a battery pack, which includes a housing and one or more individual battery cell assemblies housed within the housing.

[0056] As an example, the battery cell assembly can be a battery module, and the battery cell assembly can be housed in the housing by fixing the battery module in the housing.

[0057] As an example, battery cell assemblies can also be housed in a housing by directly fixing multiple battery cells to the housing.

[0058] In this embodiment of the application, the battery cell can be a secondary battery, which refers to a battery cell that can be recharged to activate the active materials and continue to be used after the battery cell has been discharged.

[0059] The battery cell may be, but is not limited to, lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc.

[0060] A single battery cell typically includes an electrode assembly. The electrode assembly includes a positive electrode, a negative electrode, and a separator. During the charging and discharging process of a single battery cell, active ions (such as lithium ions) repeatedly insert and extract between the positive and negative electrodes. The separator, positioned between the positive and negative electrodes, prevents short circuits while allowing active ions to pass through.

[0061] In some embodiments, the separator is a separator membrane. This application does not impose any particular limitation on the type of separator membrane; any known porous separator membrane with good chemical and mechanical stability can be selected.

[0062] In some implementations, the electrode assembly is a wound structure. The positive and negative electrode sheets are wound into a wound structure.

[0063] In some implementations, the electrode assembly is a stacked structure.

[0064] In some embodiments, the battery cell may include a housing. The housing is used to encapsulate components such as electrode assemblies and electrolytes. The housing may be made of steel, aluminum, plastic (such as polypropylene), composite metal (such as copper-aluminum composite), or aluminum-plastic film, etc.

[0065] In some embodiments, the housing includes an end cap and a casing, the casing having an opening, and the end cap closing the opening to form a sealed space for accommodating substances such as electrode assemblies and electrolytes. The casing may have one or more openings. The end cap may also be provided one or more times.

[0066] In some embodiments, at least one electrode terminal is provided on the housing, and the electrode terminal is electrically connected to the tab of the electrode assembly. The electrode terminal can be directly connected to the tab or indirectly connected to the tab via an adapter. The electrode terminal can be located on the end cap or on the housing.

[0067] In some implementations, an explosion-proof valve is provided on the housing. The explosion-proof valve is used to release the internal pressure of the battery cells.

[0068] In some embodiments, the housing can be a sealed structure or a non-sealed structure. As an example, when the housing is a sealed structure, it protects the electrode assembly and prevents leaks such as electrolyte leakage. When the housing is a non-sealed structure, it protects the electrode assembly, and a sealing bag may be included between the housing and the electrode assembly to encapsulate the electrode assembly and electrolyte. Specifically, the sealing bag can be a bag-shaped insulating material or an aluminum-plastic film.

[0069] As an example, a battery cell can be a cylindrical battery cell, a prismatic battery cell, a pouch battery cell, or a battery cell of other shapes. Prismatic battery cells include prismatic battery cells, blade-shaped battery cells, and multi-prismatic batteries, such as hexagonal prismatic batteries.

[0070] The energy storage device includes an energy storage box and at least one battery pack disposed within the energy storage box. The battery pack includes multiple battery devices, which are used to provide electrical energy or store electrical energy.

[0071] The development of energy storage technology must take into account multiple design factors, such as performance parameters like energy density and reliability. In addition, the manufacturing cost of energy storage devices also needs to be considered.

[0072] During the operation of an energy storage device, a large amount of heat is generated inside the storage tank. To cool the energy storage device, a cooling unit is usually installed. Liquid cooling units and liquid cooling pipelines are typically installed inside the storage tank to form a liquid cooling system; however, liquid cooling units and liquid cooling pipelines occupy a large space inside the storage tank and are expensive, resulting in a high manufacturing cost for energy storage devices.

[0073] To address the issue of high manufacturing costs for energy storage devices due to the high cost of liquid cooling systems, this application provides an energy storage device comprising an energy storage housing, a first air-cooled module, a second air-cooled module, a first battery pack, and a second battery pack. The first air-cooled module is disposed within the energy storage housing and includes a first static pressure chamber and a first dehumidifier. The first dehumidifier is located within the first static pressure chamber, and the side of the first static pressure chamber facing the second air-cooled module has a first air inlet and a first air outlet, which are arranged along the direction of gravity. The second air-cooled module is also disposed within the energy storage housing, and the first and second air-cooled modules are spaced apart along a first direction. The second air-cooled module includes a second static pressure chamber and a second dehumidifier, which is located within the second static pressure chamber. The static pressure box has a second air inlet and a second air outlet on the side facing the first air-cooling module. The second air outlet and the second air inlet are arranged along the direction of gravity, and the first direction is perpendicular to the direction of gravity. The first battery pack is disposed in the energy storage box and is located between the first air inlet and the second air outlet along the first direction. The second battery pack is disposed in the energy storage box and is located below the first battery pack along the direction of gravity. The second battery pack is located between the first air outlet and the second air inlet along the first direction.

[0074] In such an energy storage device, a first air-cooled module and a second air-cooled module are spaced apart along a first direction. A first battery pack is located between the first air inlet of the first air-cooled module and the second air outlet of the second air-cooled module, and a second battery pack is located between the first air outlet of the first air-cooled module and the second air inlet of the second air-cooled module. A first dehumidifier is installed inside a first static pressure chamber. The fan of the first dehumidifier draws hot air into the first static pressure chamber through the first air inlet, generating cold air while dehumidifying the hot air. The cold air is discharged from the first static pressure chamber through the first air outlet. This allows the first air-cooled module to absorb heat from the first battery pack through the first air inlet and deliver cold air to the second battery pack through the first air outlet. The second dehumidifier is installed inside a first static pressure chamber. Inside the second static pressure chamber, the fan of the second dehumidifier draws hot air into the chamber through the second air inlet, dehumidifying the hot air while generating cool air. This cool air is then discharged into the second static pressure chamber through the second air outlet. This allows the second air-cooling module to absorb heat from the second battery pack through the second air inlet and deliver cool air to the first battery pack through the second air outlet. The combined use of the first and second dehumidifiers creates an air-cooled circulation within the energy storage chamber, facilitating heat dissipation for both the first and second battery packs. Compared to a liquid cooling system, this application eliminates the liquid cooling unit and piping, reducing the manufacturing cost of the energy storage device. It also improves the space utilization within the energy storage chamber and increases the energy density of the energy storage device. Furthermore, the first static pressure chamber balances airflow, minimizing differences in airflow velocity at each first air outlet and reducing noise. Similarly, the second static pressure chamber balances airflow, minimizing differences in airflow velocity at each second air outlet and reducing noise.

[0075] For ease of explanation, the following embodiments will use a vehicle as an example of an electrical device according to an embodiment of this application.

[0076] Please refer to Figure 1 and Figure 3 , Figure 1 This is a schematic diagram of the structure of a charging network 1000 provided in some embodiments of this application. Figure 3 This is a schematic diagram of an energy storage device 200 provided in some embodiments of this application. Embodiments of this application provide a charging network 1000, which includes a charging pile 300 for charging electrical equipment. The charging network 1000 may further include an energy storage device 200, which is electrically connected to the charging pile 300 and provides power to the charging pile 300.

[0077] It should be noted that the charging pile 300 and the battery cells in the energy storage device 200 are electrically connected via cables, and the battery cells can supply their stored electrical energy to the charging pile 300. The charging pile 300 has a connector that can be connected to electrical equipment, thereby replenishing the equipment's power. The application of the energy storage device 200 in this charging network 1000 can effectively improve the safety of the charging network 1000 and also help to enhance the flexibility of the charging network 1000 during deployment.

[0078] In a charging network 1000, there can be one charging pile 300, and the energy storage device 200 provides power to the one charging pile 300; there can also be multiple charging piles 300, and the energy storage device 200 provides power to multiple charging piles 300.

[0079] As an example, such as Figure 1 As shown, the charging network 1000 includes an energy storage device 200 and two charging piles 300, with the energy storage device 200 providing power to the two charging piles 300.

[0080] The energy storage device 200 may include a battery device 100, which is electrically connected to the charging pile 300 so that the battery device 100 can provide power to the charging pile 300.

[0081] Please refer to Figure 2 and Figure 3 , Figure 2 This is a schematic diagram of the structure of an energy storage system 2000 provided in some embodiments of this application. Embodiments of this application provide an energy storage system 2000. The energy storage system 2000 includes an energy storage converter 400, which is electrically connected to a generator 3000 to convert the electrical power provided by the generator 3000. The energy storage system 2000 may also include an energy storage device 200, which is electrically connected to the energy storage converter 400. The energy storage converter 400 converts the electrical energy provided by the generator 3000 and stores it in the energy storage device 200.

[0082] A power conversion device is used to connect the power generation device 3000 and the energy storage device 200. The power generation device 3000 generates electrical energy and stores it in the energy storage device 200 via the power conversion device. The use of the energy storage device 200 in the energy storage system 2000 effectively improves its operational safety. In specific implementations, the power generation equipment can be solar panels, hydroelectric power generation equipment, thermal power generation equipment, etc. This application does not limit the specific type of power generation equipment.

[0083] As an example, such as Figure 2As shown, the energy storage system 2000 includes an energy storage device 200 and an energy storage converter 400. The two power generation devices 3000 respectively transmit the generated electrical energy to the energy storage converter 400, and the energy storage converter 400 introduces the electrical energy into the energy storage device 200 for storage.

[0084] Please refer to Figure 3 The energy storage device 200 includes an energy storage box 210, and a battery device 100 is installed inside the energy storage box 210.

[0085] As an example, the energy storage device 200 can be an energy storage container, an energy storage cabinet, etc.

[0086] As an example, energy storage device 200 can be used in energy storage power stations, wind power generation systems, solar power generation systems, mobile power systems, or temporary power supply systems. Energy storage power stations can store electrical energy during off-peak hours and provide power to relevant users or electrical equipment during peak hours. Wind power generation systems collect wind energy from wind turbines, convert it into electrical energy, and store it in energy storage device 200. Solar power generation systems can convert solar energy into electrical energy, store it in energy storage device 200, and supply it to users as needed. Mobile power systems can supply power to relevant electrical equipment in areas where the mains power supply cannot reach, such as remote mountainous areas and remote wilderness areas. Temporary power supply systems can provide power to users when there is insufficient power supply.

[0087] Please refer to Figures 4 to 6 , Figure 4 This is a schematic diagram of the structure of an energy storage device provided in some embodiments of this application. Figure 5 This is a schematic diagram of the structure of the first air-cooled module provided in some embodiments of this application. Figure 6This is a schematic diagram of the structure of the second air-cooled module provided in some embodiments of this application. Embodiments of this application provide an energy storage device 200, which includes an energy storage housing 210, a first air-cooled module 220, a second air-cooled module 230, a first battery pack 240, and a second battery pack 250. The first air-cooled module 220 is disposed within the energy storage box 210. The first air-cooled module 220 includes a first static pressure box 221 and a first dehumidifier 222. The first dehumidifier 222 is disposed within the first static pressure box 221. A first air inlet 220a and a first air outlet 220b are provided on the side of the first static pressure box 221 facing the second air-cooled module 230. The first air inlet 220a and the first air outlet 220b are arranged along the direction of gravity G. The second air-cooled module 230 is disposed within the energy storage box 210. The first air-cooled module 220 and the second air-cooled module 230 are spaced apart along a first direction X. The second air-cooled module 230 includes a second static pressure box 231 and a second dehumidifier 232. The second dehumidifier 232 is disposed within the second static pressure box 231. The second static pressure box 231 has a second air inlet 230a and a second air outlet 230b on the side facing the first air-cooling module 220. The second air outlet 230b and the second air inlet 230a are arranged along the gravity direction G, and the first direction X is perpendicular to the gravity direction G. The first battery device group 240 is disposed in the energy storage box 210, and along the first direction X, the first battery device group 240 is located between the first air inlet 220a and the second air outlet 230b. The second battery device group 250 is disposed in the energy storage box 210, and along the gravity direction G, the second battery device group 250 is located below the first battery device group 240, and along the first direction X, the second battery device group 250 is located between the first air outlet 220b and the second air inlet 230a.

[0088] The energy storage container 210 can be an energy storage container, which provides a housing chamber to house the battery device 100.

[0089] The first battery device group 240 and the second battery device group 250 both include multiple battery devices 100.

[0090] In some embodiments, the energy storage box 210 may be provided with multiple support frames for supporting the battery device 100.

[0091] The first air-cooling module 220 and the second air-cooling module 230 are arranged opposite each other along the first direction X, and the first battery device group 240 and the second battery device group 250 are arranged between the first air-cooling module 220 and the second air-cooling module 230.

[0092] A plenum chamber is a component used to reduce dynamic pressure and increase static pressure. It has the functions of stabilizing airflow and reducing airflow vibration. It extends the air delivery distance by converting part of the dynamic pressure into static pressure, while effectively reducing noise and achieving uniform airflow distribution.

[0093] The first air-cooled module 220 is a module that cools down the air by means of airflow. The first air inlet 220a is used to absorb hot air, and the first air outlet 220b is used to output cold air. The first air inlet 220a and the first air outlet 220b are arranged along the direction of gravity G. The first air inlet 220a is correspondingly set with the first battery device group 240, and the first air outlet 220b is correspondingly set with the second battery device group 250. When the first air inlet 220a absorbs hot air, it can drive airflow and exchange heat with the first battery device group 240. When the first air outlet 220b outputs cold air, the cold air can exchange heat with the second battery device group 250.

[0094] The first dehumidifier 222 is installed inside the first static pressure box 221. The air inlet of the first dehumidifier 222 corresponds to the first air inlet 220a, and the air outlet of the first dehumidifier 222 corresponds to the first air outlet 220b. This allows the fan of the first dehumidifier 222 to guide hot air from the first air inlet 220a into the first static pressure box 221 and into the first dehumidifier 222 to achieve dehumidification and cooling. The air outlet of the first dehumidifier 222 discharges cold air to the first air outlet 220b, so that the cold air leaves the first static pressure box 221.

[0095] The first air inlet 220a and the first air outlet 220b are arranged facing the second air-cooling module 230 so that hot air can be absorbed through the first air inlet 220a and cold air can be discharged through the first air outlet 220b, so that air can circulate and exchange heat between the first battery device group 240 and the second battery device group 250.

[0096] The second air-cooled module 230 is a module that cools down the air by means of airflow. The second air inlet 230a is used to absorb hot air, and the second air outlet 230b is used to output cold air. The second air outlet 230b and the second air inlet 230a are arranged along the direction of gravity G. The second air outlet 230b is correspondingly set to the first battery device group 240, and the second air inlet 230a is correspondingly set to the second battery device group 250. When the second air outlet 230b outputs cold air, the cold air can exchange heat with the first battery device group 240. When the second air inlet 230a absorbs hot air, it can drive airflow and exchange heat with the second battery device group 250.

[0097] The second dehumidifier 232 is installed inside the second static pressure box 231. The air inlet of the second dehumidifier 232 corresponds to the second air inlet 230a, and the air outlet of the second dehumidifier 232 corresponds to the second air outlet 230b. This allows the fan of the second dehumidifier 232 to guide hot air from the second air inlet 230a into the second static pressure box 231 and into the second dehumidifier 232 to achieve dehumidification and cooling. The air outlet of the second dehumidifier 232 discharges cold air to the second air outlet 230b, so that the cold air leaves the second static pressure box 231.

[0098] The second air inlet 230a and the second air outlet 230b are arranged facing the first air-cooling module 220 so that hot air can be absorbed through the second air inlet 230a and cold air can be discharged through the second air outlet 230b, so that air can circulate and exchange heat between the first battery device group 240 and the second battery device group 250.

[0099] In some embodiments, the plurality of battery devices 100 in the first battery device group 240 may be spaced apart along the direction of gravity G, and may also be spaced apart along a first direction X, in order to provide a larger number of battery devices 100. Similarly, the plurality of battery devices 100 in the second battery device group 250 may be spaced apart along the direction of gravity G, and may also be spaced apart along a first direction X, in order to provide a larger number of battery devices 100.

[0100] According to an embodiment of this application, the energy storage device 200 comprises a first air-cooled module 220 and a second air-cooled module 230 spaced apart along a first direction X, a first battery pack 240 located between the first air inlet 220a of the first air-cooled module 220 and the second air outlet 230b of the second air-cooled module 230, and a second battery pack 250 located between the first air outlet 220b of the first air-cooled module 220 and the second air inlet 230a of the second air inlet of the second air-cooled module 230. A first dehumidifier is also included. 222 is installed inside the first static pressure box 221. The fan of the first dehumidifier 222 draws hot air into the first static pressure box 221 through the first air inlet 220a. While dehumidifying the hot air, it generates cold air. The cold air is discharged from the first static pressure box 221 through the first air outlet 220b. This allows the first air-cooled module 220 to absorb heat from the first battery pack 240 through the first air inlet 220a and deliver cold air to the second battery pack 250 through the first air outlet 220b. The second dehumidifier 232 is installed inside the second static pressure chamber 231. The fan of the second dehumidifier 232 draws hot air into the second static pressure chamber 231 through the second air inlet 230a, generating cool air while dehumidifying the hot air. The cool air is discharged into the second static pressure chamber 231 through the second air outlet 230b. This allows the second air-cooled module 230 to absorb heat from the second battery pack 250 through the second air inlet 230a and discharge it to the first battery pack 250 through the second air outlet 230b. 40 delivers cool air; through the combined use of the first dehumidifier 222 and the second dehumidifier 232, a wind-cooled circulation is formed within the energy storage box 210, which is beneficial for heat dissipation of the first battery pack 240 and the second battery pack 250; compared with a liquid cooling system, this application eliminates the liquid cooling unit and liquid cooling pipeline, which can reduce the manufacturing cost of the energy storage device 200 and reduce energy consumption; at the same time, it can also improve the space utilization rate inside the energy storage box 210 and increase the energy density of the energy storage device 200. In addition, the first static pressure box 221 can balance the airflow, so that the airflow velocity difference of the airflow from each first air outlet 220b is small, and it can also reduce the noise generated by the airflow; the second static pressure box 231 can balance the airflow, so that the airflow velocity difference of the airflow from each second air outlet 230b is small, and it can also reduce the noise generated by the airflow.

[0101] Please refer to Figures 4 to 6According to some embodiments of this application, the first static pressure box 221 includes a first sidewall 221a, a first air inlet 220a and a first air outlet 220b disposed on the first sidewall 221a; the second static pressure box 231 includes a second sidewall 231a, a second air inlet 230a and a second air outlet 230b disposed on the second sidewall 231a, the second sidewall 231a and the first sidewall 221a are disposed opposite to each other along a first direction X; along the first direction X, the orthographic projection of the first dehumidifier 222 on the first sidewall 221a at least partially covers the first air inlet 220a; along the opposite direction of the first direction X, the orthographic projection of the second dehumidifier 232 on the second sidewall 231a at least partially covers the second air inlet 230a.

[0102] The first sidewall 221a is the wall of the first static pressure chamber 221 facing the second air-cooled module 230. The first air inlet 220a and the first air outlet 220b are arranged along the gravity direction G on the first sidewall 221a. The first air inlet 220a penetrates the first sidewall 221a along the first direction X to connect the interior and exterior of the first static pressure chamber 221; the first air outlet 220b penetrates the first sidewall 221a along the first direction X to connect the interior and exterior of the first static pressure chamber 221.

[0103] With the first direction X as the projection direction, on the same projection plane perpendicular to the first direction X, the orthographic projection of the first dehumidifier 222 at least partially covers the first air inlet 220a, so that the distance between the first dehumidifier 222 and the first air inlet 220a is less than the distance between the first dehumidifier 222 and the first air outlet 220b, so that the fan of the first dehumidifier 222 can absorb hot air from the first air inlet 220a.

[0104] The first direction X is a single direction on a plane perpendicular to the direction of gravity G, and the first air-cooling module 220 and the second air-cooling module 230 are arranged along the first direction X.

[0105] The second side wall 231a is the wall of the second static pressure chamber 231 facing the first air-cooling module 220. The second air outlet 230b and the second air inlet 230a are arranged along the gravity direction G on the second side wall 231a. The second air inlet 230a penetrates the second side wall 231a along the first direction X to connect the outside and inside of the second static pressure chamber 231; the second air outlet 230b penetrates the second side wall 231a along the first direction X to connect the outside and inside of the second static pressure chamber 231.

[0106] With the direction opposite to the first direction X as the projection direction, on the same projection plane perpendicular to the direction opposite to the first direction X, the orthogonal projection of the second dehumidifier 232 at least partially covers the second air inlet 230a, so that the distance between the second dehumidifier 232 and the second air inlet 230a is less than the distance between the second dehumidifier 232 and the second air outlet 230b, so that the fan of the second dehumidifier 232 can absorb hot air from the second air inlet 230a.

[0107] In the above scheme, the first dehumidifier 222 is positioned close to the first air inlet 220a, which facilitates the extraction of air by the fan of the first dehumidifier 222 and the removal of some of the heat from the first battery device group 240 through air circulation, thus facilitating air circulation; the second dehumidifier 232 is positioned close to the second air inlet 230a, which facilitates the extraction of air by the fan of the second dehumidifier 232 and the removal of some of the heat from the second battery device group 250 through air circulation, thus facilitating air circulation.

[0108] Please refer to Figure 7 and Figure 8 , Figure 7 This is a schematic diagram of the structure of the first air-cooled module provided in some other embodiments of this application. Figure 8 This is a schematic diagram of the structure of a second air-cooled module provided in some other embodiments of this application. According to some embodiments of this application, the first air-cooled module 220 further includes a first pipe 223, which connects the first dehumidifier 222 and the first air outlet 220b; and / or, the second air-cooled module 230 further includes a second pipe 233, which connects the second dehumidifier 232 and the second air outlet 230b.

[0109] The first duct 223 is a component used to connect the first dehumidifier 222 and the first air outlet 220b. The cold air output from the air outlet of the first dehumidifier 222 is transported to the first air outlet 220b through the first duct 223 so that the cold air can flow out evenly from the first air outlet 220b.

[0110] The second pipe 233 is a component used to connect the second dehumidifier 232 and the second air outlet 230b. The cold air output from the air outlet of the second dehumidifier 232 is transported to the second air outlet 230b through the second pipe 233 so that the cold air can flow out evenly from the second air outlet 230b.

[0111] In the above scheme, the first duct 223 can guide the cold air output by the first dehumidifier 222 to the first air outlet 220b, which facilitates the uniform flow of cold air from the first air outlet 220b. The second duct 233 can guide the cold air output by the second dehumidifier 232 to the second air outlet 230b, which facilitates the uniform flow of cold air from the second air outlet 230b.

[0112] According to some embodiments of this application, any of the following conditions are met: 1) there are multiple first air inlets 220a, and the multiple first air inlets 220a are arranged in a matrix; 2) there are multiple first air outlets 220b, and the multiple first air outlets 220b are arranged in a matrix; 3) there are multiple second air inlets 230a, and the multiple second air inlets 230a are arranged in a matrix; 4) there are multiple second air outlets 230b, and the multiple second air outlets 230b are arranged in a matrix.

[0113] There are multiple first air inlets 220a, which can be spaced apart and arranged in a matrix along the second direction and the gravity direction G. For example, multiple first air inlets 220a can be arranged along the second direction and multiple first air inlets 220a can be arranged along the gravity direction G. The second direction, the first direction X, and the gravity direction G are all perpendicular to each other.

[0114] By setting the number of first air inlets 220a to multiple, hot air can enter the first static pressure box 221 from multiple locations, which is conducive to the airflow having a high flow rate and uniform distribution.

[0115] There are multiple first air outlets 220b, which can be arranged at intervals and can be distributed in a matrix along the second direction and the gravity direction G. For example, there are multiple first air outlets 220b along the second direction and multiple first air outlets 220b along the gravity direction G.

[0116] By setting the number of first air outlets 220b to multiple, it is beneficial for cold air to leave the first static pressure box 221 from multiple locations, which is beneficial for the airflow to have a higher flow rate and uniform distribution.

[0117] There are multiple second air inlets 230a. These multiple second air inlets 230a can be arranged at intervals. The multiple second air inlets 230a can be distributed in a matrix along the second direction and the gravity direction G. For example, there are multiple second air inlets 230a arranged along the second direction and multiple second air inlets 230a arranged along the gravity direction G.

[0118] By setting the number of second air inlets 230a to multiple, hot air can enter the second static pressure box 231 from multiple locations, which is conducive to the airflow having a high flow rate and uniform distribution.

[0119] There are multiple second air outlets 230b, which can be arranged at intervals and can be distributed in a matrix along the second direction and the gravity direction G. For example, there are multiple second air outlets 230b along the second direction and multiple second air outlets 230b along the gravity direction G.

[0120] By setting the number of second air outlets 230b to multiple, it is beneficial for cold air to leave the second static pressure box 231 from multiple locations, which is beneficial for the airflow to have a higher flow rate and uniform distribution.

[0121] Please refer to Figures 4 to 6 According to some embodiments of this application, the first static pressure box 221 includes a first sidewall 221a, a first air inlet 220a and a first air outlet 220b disposed on the first sidewall 221a, and the energy storage device 200 further includes a first guide baffle 270, one end of which is connected to the outer surface of the first sidewall 221a, and the first guide baffle 270 is located between the first air inlet 220a and the first air outlet 220b along the direction of gravity G; the second static pressure box 23 1 includes a second sidewall 231a, a second air inlet 230a and a second air outlet 230b disposed on the second sidewall 231a, the second sidewall 231a and the first sidewall 221a are disposed opposite to each other along the first direction X, the energy storage device 200 also includes a second guide baffle 280, one end of the second guide baffle 280 is connected to the outer surface of the second sidewall 231a, along the gravity direction G, the second guide baffle 280 is located between the second air outlet 230b and the second air inlet 230a.

[0122] The outer surface of the first sidewall 221a is the surface of the first sidewall 221a facing the second air-cooled module 230.

[0123] The first air inlet 220a and the first air outlet 220b are distributed along the direction of gravity G. The first baffle 270 is located outside the first static pressure box 221 and is connected to the outer surface of the first side wall 221a. The first baffle 270 is located between the first air inlet 220a and the first air outlet 220b, which can prevent the cold air output from the first air outlet 220b from flowing directly toward the first air inlet 220a, thus facilitating heat exchange between the cold air output from the first air outlet 220b and the battery device 100.

[0124] The outer surface of the second sidewall 231a is the surface of the second sidewall 231a facing the first air-cooled module 220.

[0125] The second air outlet 230b and the second air inlet 230a are distributed along the direction of gravity G. The second guide baffle 280 is located outside the second static pressure box 231 and is connected to the outer surface of the second side wall 231a. The second guide baffle 280 is located between the second air outlet 230b and the second air inlet 230a, which can prevent the cold air output from the second air outlet 230b from flowing directly toward the second air inlet 230a, thus facilitating heat exchange between the cold air output from the second air outlet 230b and the battery device 100.

[0126] In the above scheme, the first baffle 270 separates the first air inlet 220a and the first air outlet 220b, which can reduce the risk of cold air short-circuiting between the first air outlet 220b and the first air inlet 220a; the second baffle 280 separates the second air inlet 230a and the second air outlet 230b, which can reduce the risk of cold air short-circuiting between the second air outlet 230b and the second air inlet 230a.

[0127] Please refer to Figures 4 to 6 According to some embodiments of this application, the energy storage device 200 further includes a third battery device group 260 located between the first battery device group 240 and the second battery device group 250 along the gravitational direction G. The third battery device group 260 includes a first battery device 261 and a second battery device 262 located at both ends in the first direction X. The other end of the first flow guide baffle 270 is connected to the first battery device 261, and the other end of the second flow guide baffle 280 is connected to the second battery device 262.

[0128] The third battery device group 260 is disposed between the first battery device group 240 and the second battery device group 250, and the third battery device group 260 separates the first battery device group 240 and the second battery device group 250.

[0129] The first battery device 261 is the battery device 100 in the third battery device group 260 that is closest to the first static pressure box 221, and the second battery device 262 is the battery device 100 in the third battery device group 260 that is closest to the second static pressure box 231; at least one battery device 100 may be disposed between the first battery device 261 and the second battery device 262 along the first direction X.

[0130] The two ends of the first baffle 270 are respectively connected to the outer surface of the first sidewall 221a and the first battery device 261. The cold air output from the first air outlet 220b can flow below the third battery device group 260 so that the cold air can exchange heat with the second battery device group 250. At the same time, since the first baffle 270 is connected to the first battery device 261, the cold air output from the first air outlet 220b can also exchange heat with the third battery device group 260.

[0131] The two ends of the second baffle 280 are respectively connected to the outer surfaces of the second battery device 262 and the second side wall 231a. The cold air output from the second air outlet 230b can flow above the third battery device group 260 to facilitate heat exchange between the cold air and the first battery device group 240. At the same time, since the second baffle 280 is connected to the second battery device 262, the cold air output from the second air outlet 230b can also exchange heat with the third battery device group 260.

[0132] In the above scheme, the third battery device group 260 separates the first battery device group 240 and the second battery device group 250. The two ends of the first guide baffle 270 are respectively connected to the first side wall 221a and the first battery device 261 to guide the cold air output from the first air outlet 220b toward the second battery device group 250, so as to cool down the second battery device group 250 and the third battery device group 260. The two ends of the second guide baffle 280 are respectively connected to the second side wall 231a and the second battery device 262 to guide the cold air output from the second air outlet 230b toward the first battery device group 240, so as to cool down the first battery device group 240 and the third battery device group 260.

[0133] Please refer to Figure 4 According to some embodiments of this application, the third battery device group 260 includes a plurality of battery devices 100 spaced apart along a first direction X; the third battery device group 260 also includes a third flow guide baffle 263, which connects two adjacent battery devices 100 in the third battery device group 260 along the first direction X.

[0134] The third battery assembly 260 has multiple battery units 100 spaced apart to facilitate the connection of components such as wiring harnesses to the battery units 100, thereby reducing the risk of interference between components connected to the battery units 100.

[0135] The third flow guide baffle 263 is disposed between two adjacent battery devices 100, and the third flow guide baffle 263 connects the two adjacent battery devices 100. By setting a third baffle 263 between two adjacent battery devices 100, which cooperates with the first baffle 270 and the second baffle 280, the third battery device group 260 can separate the first battery device group 240 and the second battery device group 250. Based on this, the cold air output from the first air outlet 220b flows toward the second battery device group 250. The hot air after the cold air exchanges heat with the second battery device group 250 and the third battery device group 260 enters the second static pressure box 231 from the second air inlet 230a and is absorbed by the second dehumidifier 232. The cold air output from the second air outlet 230b flows toward the first battery device group 240. The hot air after the cold air exchanges heat with the first battery device group 240 and the third battery device group 260 enters the first static pressure box 221 from the first air inlet 220a and is absorbed by the first dehumidifier 222.

[0136] In the above scheme, based on the first guide baffle 270 and the second guide baffle 280, a third guide baffle 263 is set to further guide the flow direction of the cold air output from the first air outlet 220b and the second air outlet 230b, which is beneficial for cooling the second battery device group 250 and the first battery device group 240 and improving the cooling effect. The cold air output from the first air outlet 220b exchanges heat with the second battery device group 250 and the third battery device group 260 at the same time; similarly, the cold air output from the second air outlet 230b exchanges heat with the first battery device group 240 and the third battery device group 260 at the same time.

[0137] Please refer to Figure 4 According to some embodiments of this application, the plurality of battery devices 100 in the first battery device group 240 are arranged in M ​​rows and N columns. Each row of battery devices 100 includes a plurality of battery devices 100 spaced apart along the first direction X, and each column of battery devices 100 includes a plurality of battery devices 100 spaced apart along the gravity direction G. The first battery device group 240 also includes a fourth flow guide baffle 241, which connects two adjacent battery devices 100 in the same row.

[0138] In the first battery device group 240, multiple battery devices 100 are arranged in a matrix along the first direction X and the gravity direction G. The multiple battery devices 100 are arranged in multiple rows along the gravity direction G and in multiple columns along the first direction X. Adjacent battery devices 100 are spaced apart to facilitate the connection of components such as wiring harnesses to the battery devices 100, thereby reducing the risk of interference between components connected to the battery devices 100.

[0139] The fourth baffle 241 is a baffle used to guide airflow. The fourth baffle 241 connects two adjacent battery devices 100 in the same row. The fourth baffle 241 separates the upper and lower rows of battery devices 100 in the direction of gravity G so as to form a flow channel between the two adjacent rows of battery devices 100 in the direction of gravity G.

[0140] In the above scheme, by setting a fourth flow guide baffle 241, a flow channel is formed between two adjacent rows of battery devices 100 in the direction of gravity G, so that each battery device 100 in the first battery device group 240 can exchange heat with the cold air output from the second air outlet 230b, which is beneficial to cooling the first battery device group 240.

[0141] Please refer to Figure 4According to some embodiments of this application, the plurality of battery devices 100 in the second battery device group 250 are arranged in P rows and Q columns. Each row of battery devices 100 includes a plurality of battery devices 100 spaced apart along the first direction X, and each column of battery devices 100 includes a plurality of battery devices 100 spaced apart along the gravity direction G. The second battery device group 250 also includes a fifth flow guide baffle 251, which connects two adjacent battery devices 100 in the same row.

[0142] In the second battery assembly 250, multiple battery devices 100 are arranged in a matrix along the first direction X and the gravity direction G. The multiple battery devices 100 are arranged in multiple rows along the gravity direction G and in multiple columns along the first direction X. Adjacent battery devices 100 are spaced apart to facilitate the connection of components such as wiring harnesses to the battery devices 100, thereby reducing the risk of interference between components connected to the battery devices 100.

[0143] The fifth baffle 251 is a baffle used to guide airflow. The fifth baffle 251 connects two adjacent battery devices 100 in the same row. The fifth baffle 251 separates the upper and lower rows of battery devices 100 in the direction of gravity G so as to form a flow channel between the two adjacent rows of battery devices 100 in the direction of gravity G.

[0144] In the above scheme, by setting the fifth baffle 251, each battery device 100 in the second battery device group 250 can exchange heat with the cold air output from the first air outlet 220b, which is beneficial to cooling the second battery device group 250.

[0145] Please refer to Figure 4 and further refer to Figure 9 , Figure 9 This is a schematic diagram of the structure of a battery device provided in some embodiments of this application. According to some embodiments of this application, the first battery device group 240 and the second battery device group 250 both include a plurality of battery devices 100. Each battery device 100 includes a battery housing 110 and a battery cell 120 disposed within the battery housing 110. The battery housing 110 carries the battery cell 120, and the top of the battery housing 110 is open.

[0146] The battery housing 110 provides a storage space to accommodate the battery cells 120.

[0147] The battery housing 110 may include a bottom wall, on which battery cells 120 are disposed, and the bottom wall supports the battery cells 120. The battery housing 110 may also include side walls surrounding the bottom wall. The top of the battery housing 110 is open, and the end of the side wall away from the bottom wall is not closed. The battery housing 110 has an open structure, and the interior of the battery housing 110 communicates with the exterior, so that a portion of the battery cell 120 can be exposed through the opening of the battery housing 110. The battery cell 120 has a large heat dissipation area.

[0148] In the above scheme, the battery housing 110 carries the battery cell 120, and the top of the battery cell 120 is open, which increases the heat dissipation area of ​​the battery cell 120 and facilitates heat dissipation of the battery device 100. During the operation of the first dehumidifier 222 and the second dehumidifier 232, air circulates between the first air-cooling module 220 and the second air-cooling module 230. During the airflow, the airflow can carry away the heat emitted by the battery cell 120, thereby facilitating the cooling of the battery device 100.

[0149] Please refer to Figure 10 , Figure 10 This is a schematic diagram of the structure of an energy storage device provided in some other embodiments of this application. According to some embodiments of this application, the energy storage box 210 includes a battery compartment 210a and an electrical compartment 210b. A first air-cooling module 220, a first battery pack 240, a second battery pack 250, and a second air-cooling module 230 are disposed in the battery compartment 210a; a control module 290 is disposed in the electrical compartment 210b.

[0150] The first air-cooling module 220, the first battery pack 240, the second battery pack 250, and the second air-cooling module 230 are disposed in the battery compartment 210a. Through the cooperation of the first air-cooling module 220 and the second air-cooling module 230, air circulation is formed among the first battery pack 240, the first air-cooling module 220, the second battery pack 250, and the second air-cooling module 230, so as to cool down the first battery pack 240 and the second battery pack 250.

[0151] In the above scheme, the first air-cooling module 220 and the second air-cooling module 230 are disposed in the battery compartment 210a, which is conducive to heat dissipation of the first battery device group 240 and the second battery device group 250; and the first air-cooling module 220 and the second air-cooling module 230 do not occupy the space of the electrical compartment 210b, so that the space occupancy rate of the electrical compartment 210b is high.

[0152] According to some embodiments of this application, the energy storage device 200 further includes a temperature and humidity sensor and a first battery temperature sensor. The temperature and humidity sensor is used to detect the temperature and humidity at the location where the battery device is installed inside the energy storage box; the first battery temperature sensor is used to detect the temperature of the individual battery cells in the battery device. The energy storage device 200 also includes a control module, which is electrically connected to the temperature and humidity sensor, the first dehumidifier, and the second dehumidifier.

[0153] The dehumidifier will be turned on under the following conditions: 1) The temperature inside the energy storage tank is ≤ the dew point temperature + 3℃; 2) The humidity inside the energy storage tank is ≥ 65%; 3) The maximum temperature of the battery unit (Tmax) is ≥ 25℃ and the minimum temperature of the battery unit (Tmin) is ≥ 21℃. The dehumidifier will be turned on if any of these conditions are met. The dew point temperature can be measured at the dehumidifier's air outlet.

[0154] The dehumidifier will be turned off under the following conditions: 1) The temperature inside the energy storage tank is greater than the dew point temperature + 3℃; 2) The humidity inside the energy storage tank is less than 65%; 3) The maximum temperature of the battery unit (Tmax) is less than 20℃ or the minimum temperature of the battery unit (Tmin) is less than 18℃. The dehumidifier will be turned off if all of the above conditions are met.

[0155] According to some embodiments of this application, this application also provides an energy storage system 2000, which includes an energy storage converter 400 and an energy storage device 200 provided according to the first aspect of this application. The energy storage converter 400 is used to electrically connect the power generation device 3000 and the energy storage device 200.

[0156] According to some embodiments of this application, this application also provides a charging network 1000, which includes a charging pile 300 and an energy storage device 200 provided according to the first aspect of this application, the energy storage device 200 being used to provide electrical energy to the charging pile 300.

[0157] According to some embodiments of this application, please refer to Figures 4 to 10 This application provides an energy storage device 200, which includes an energy storage box 210, a first air-cooled module 220, a second air-cooled module 230, a first battery pack 240, a second battery pack 250, a third battery pack 260, a first flow guide baffle 270, and a second flow guide baffle 280.

[0158] The first air-cooled module 220 and the second air-cooled module 230 are spaced apart along the first direction X inside the energy storage box 210. The first battery pack 240, the third battery pack 260 and the second battery pack 250 are disposed between the first air-cooled module 220 and the second air-cooled module 230. The first battery pack 240, the third battery pack 260 and the second battery pack 250 are distributed along the direction of gravity G.

[0159] The first air-cooled module 220 includes a first plenum chamber 221 and a first dehumidifier 222. The first plenum chamber 221 includes a first sidewall 221a facing the second air-cooled module 230. A first air inlet 220a and a first air outlet 220b are disposed on the first sidewall 221a along the direction of gravity G. The second air-cooled module 230 includes a second plenum chamber 231 and a second dehumidifier 232. The second plenum chamber 231 includes a second sidewall 231a facing the first air-cooled module 220. A second air outlet 230b and a first air inlet 220a are disposed on the second sidewall 231a along the direction of gravity G. Along the first direction X, the orthographic projection of the first dehumidifier 222 on the first sidewall 221a at least partially covers the first air inlet 220a; along the opposite direction of the first direction X, the orthographic projection of the second dehumidifier 232 on the second sidewall 231a at least partially covers the second air inlet 230a. There are multiple first air inlets 220a, which are arranged in a matrix; there are multiple first air outlets 220b, which are arranged in a matrix; there are multiple second air inlets 230a, which are arranged in a matrix; there are multiple second air outlets 230b, which are arranged in a matrix.

[0160] Along the first direction X, the first battery device group 240 is disposed between the first air inlet 220a and the second air outlet 230b, and the second battery device group 250 is disposed between the first air outlet 220b and the second air inlet 230a.

[0161] The third battery assembly 260 includes a plurality of battery devices 100 spaced apart along a first direction X, with a third baffle 263 connecting adjacent battery devices 100. The third battery assembly 260 includes a first battery device 261 and a second battery device 262 located at opposite ends along the first direction X. Along the direction of gravity G, a first baffle 270 is disposed between a first air inlet 220a and a first air outlet 220b, and a second baffle 280 is disposed between a second air outlet 230b and a second air inlet 230a. The first baffle 270 connects the outer surface of the first sidewall 221a and the first battery device 261, and the second baffle 280 connects the second battery device 262 and the outer surface of the second sidewall 231a. The first baffle 270 and the second baffle 280 cooperate with the third battery assembly 260 to separate the first battery assembly 240 and the second battery assembly 250.

[0162] The first battery device group 240 has multiple battery devices 100 arranged in M ​​rows and N columns. Each row of battery devices 100 includes multiple battery devices 100 spaced apart along the first direction X, and each column of battery devices 100 includes multiple battery devices 100 spaced apart along the gravity direction G. The first battery device group 240 also includes a fourth flow guide baffle 241, which connects two adjacent battery devices 100 in the same row so that a flow channel is formed between two adjacent rows of battery devices 100.

[0163] The second battery device group 250 has multiple battery devices 100 arranged in P rows and Q columns. Each row of battery devices 100 includes multiple battery devices 100 spaced apart along the first direction X, and each column of battery devices 100 includes multiple battery devices 100 spaced apart along the direction of gravity G. The second battery device group 250 also includes a fifth flow guide baffle 251, which connects two adjacent battery devices 100 in the same row so that a flow channel is formed between two adjacent rows of battery devices 100.

[0164] Each battery device 100 of this application includes a battery housing 110 and a battery cell 120 disposed within the battery housing 110. The battery housing 110 carries the battery cell 120, and the top of the battery housing 110 is open.

[0165] According to the energy storage device 200 of this application embodiment, the first air-cooling module 220 and the second air-cooling module 230 are arranged alternately to form an air circulation between the first air-cooling module 220 and the second air-cooling module 230, thereby cooling down each battery device 100 disposed between the first air-cooling module 220 and the second air-cooling module 230. This facilitates the normal operation of the battery device 100, eliminates the need for liquid cooling units and liquid cooling pipelines, and reduces the manufacturing cost of the energy storage device 200. At the same time, it also improves the space utilization rate inside the energy storage box and increases the energy density of the energy storage device. In addition, the battery box 110 of the battery device 100 has an open structure, which facilitates heat exchange between the battery cells 120 and the air, improving the heat dissipation effect.

[0166] Although this application has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of this application. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An energy storage device, characterized in that, include: Energy storage container; A first air-cooled module is disposed inside the energy storage box. The first air-cooled module includes a first static pressure box and a first dehumidifier. The first dehumidifier is disposed inside the first static pressure box. The second air-cooled module is disposed inside the energy storage box. The first air-cooled module and the second air-cooled module are spaced apart along a first direction. The second air-cooled module includes a second static pressure box and a second dehumidifier. The second dehumidifier is disposed inside the second static pressure box. The first static pressure box has a first air inlet and a first air outlet on the side facing the second air-cooled module. The first air inlet and the first air outlet are arranged along the direction of gravity. The second static pressure box has a second air inlet and a second air outlet on the side facing the first air-cooled module. The second air outlet and the second air inlet are arranged along the direction of gravity. The first direction is perpendicular to the direction of gravity. A first battery pack is disposed in the energy storage box, and along the first direction, the first battery pack is located between the first air inlet and the second air outlet. The second battery pack is disposed inside the energy storage box. Along the direction of gravity, the second battery pack is located below the first battery pack. Along the first direction, the second battery pack is located between the first air outlet and the second air inlet.

2. The energy storage device according to claim 1, characterized in that, The first static pressure box includes a first side wall, and the first air inlet and the first air outlet are disposed on the first side wall; The second static pressure box includes a second side wall, a second air inlet and a second air outlet are disposed on the second side wall, and the second side wall and the first side wall are disposed opposite to each other along the first direction; Along the first direction, the orthographic projection of the first dehumidifier on the first sidewall at least partially covers the first air inlet; In the opposite direction to the first direction, the orthogonal projection of the second dehumidifier onto the second sidewall at least partially covers the second air inlet.

3. The energy storage device according to claim 2, characterized in that, The first air-cooled module further includes a first pipe, which connects the first dehumidifier and the first air outlet; and / or, The second air-cooled module also includes a second pipe, which connects the second dehumidifier and the second air outlet.

4. The energy storage device according to claim 1, characterized in that, Meet any of the following conditions: 1) There are multiple first air inlets, and these multiple first air inlets are distributed in a matrix; 2) There are multiple first air outlets, and these multiple first air outlets are distributed in a matrix; 3) There are multiple second air inlets, and these multiple second air inlets are distributed in a matrix; 4) There are multiple second air outlets, and these multiple second air outlets are distributed in a matrix.

5. The energy storage device according to claim 1, characterized in that, The first static pressure box includes a first side wall, the first air inlet and the first air outlet are disposed on the first side wall, and the energy storage device further includes a first flow guide baffle, one end of the first flow guide baffle is connected to the outer surface of the first side wall, and the first flow guide baffle is located between the first air inlet and the first air outlet along the direction of gravity. The second static pressure box includes a second sidewall, a second air inlet and a second air outlet are disposed on the second sidewall, the second sidewall and the first sidewall are disposed opposite to each other along the first direction, the energy storage device also includes a second flow guide baffle, one end of the second flow guide baffle is connected to the outer surface of the second sidewall, and along the direction of gravity, the second flow guide baffle is located between the second air outlet and the second air inlet.

6. The energy storage device according to claim 5, characterized in that, The energy storage device further includes a third battery device group located between the first battery device group and the second battery device group along the direction of gravity. The third battery device group includes the first battery device and the second battery device located at both ends in the first direction. The other end of the first flow guide baffle is connected to the first battery device, and the other end of the second flow guide baffle is connected to the second battery device.

7. The energy storage device according to claim 6, characterized in that, The third battery device group includes a plurality of battery devices spaced apart along the first direction. The third battery device group further includes a third flow guide baffle, which connects two adjacent battery devices in the third battery device group in the first direction.

8. The energy storage device according to claim 7, characterized in that, The battery devices in the first battery device group are arranged in M ​​rows and N columns. Each row of battery devices includes multiple battery devices spaced apart along the first direction, and each column of battery devices includes multiple battery devices spaced apart along the direction of gravity. The first battery pack also includes a fourth flow guide baffle, which connects two adjacent battery packs in the same row.

9. The energy storage device according to claim 7, characterized in that, The battery devices in the second battery device group are arranged in P rows and Q columns. Each row of battery devices includes multiple battery devices spaced apart along the first direction, and each column of battery devices includes multiple battery devices spaced apart along the direction of gravity. The second battery pack also includes a fifth flow guide baffle, which connects two adjacent battery packs in the same row.

10. The energy storage device according to claim 1, characterized in that, Both the first battery device group and the second battery device group include multiple battery devices. Each battery device includes a battery housing and individual battery cells disposed within the battery housing. The battery housing carries the individual battery cells, and the top of the battery housing is open.

11. The energy storage device according to claim 1, characterized in that, The energy storage enclosure includes a battery compartment and an electrical compartment, and the first air-cooling module, the first battery pack, the second battery pack, and the second air-cooling module are disposed in the battery compartment. The electrical compartment is equipped with a control module.

12. An energy storage system, characterized in that, It includes an energy storage converter and an energy storage device as described in any one of claims 1-11, wherein the energy storage converter is used to electrically connect the power generation device and the energy storage device.

13. A charging network, characterized in that, It includes a charging pile and an energy storage device as described in any one of claims 1-11, wherein the energy storage device is used to provide electrical energy to the charging pile.

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