Energy storage device

Abstract

The utility model discloses an energy storage device, and belongs to the field of energy storage. The energy storage device comprises a box body, a first door body, a second door body, a battery system, a fire-fighting module and a power distribution module; a battery cabin with a first opening and an electrical cabin with a second opening are formed in the box body; the first door body is installed on the box body in an openable manner, and the second door body is arranged at the second opening to seal the electrical cabin; the fire-fighting module and the power distribution module are installed in the electrical cabin. The battery system comprises a battery pack, an energy storage converter and at least one battery rack, the at least one battery rack is arranged in the battery cabin, the at least one battery rack is distributed at intervals in the first direction, the battery rack and the inner wall of the box body are arranged at intervals, the battery rack comprises a plurality of storage positions, and each storage position is used for placing the battery pack or the energy storage converter. According to the energy storage device, collision between the battery racks and between the battery racks and the box body can be reduced in the moving process of the box body, and the reliability and safety of the energy storage device are improved.

Description

Technical Field

[0001] The present invention relates to the field of energy storage, and in particular to an energy storage device. Background Art

[0002] Containerized energy storage devices, as used in related technologies, integrate core components such as batteries, thermal management systems, battery management systems, energy management systems, intelligent switching, and energy storage converters. These devices offer advantages such as easy installation, minimal footprint, modular expansion, and strong environmental adaptability, making them widely used. Existing containerized energy storage devices can be used for peak-shaving, frequency-modulation, photovoltaic, and wind power storage.

[0003] However, the current box-type energy storage equipment has a complex structure and has deficiencies in heat dissipation and reliability, which need to be improved. Utility Model Content

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes an energy storage device to improve the reliability of the container-type energy storage device.

[0005] In a first aspect, the present application provides an energy storage device, characterized by comprising:

[0006] a housing forming a battery compartment having a first opening and an electrical compartment having a second opening;

[0007] a first door body, the first door body being installed on the box body in an openable and closable manner, and the first door body being arranged at the first opening to close the battery compartment;

[0008] a second door body, the second door body being installed on the box body in an openable and closable manner, and the second door body being arranged at the second opening to close the electrical compartment;

[0009] A fire protection module and a power distribution module, wherein the fire protection module and the power distribution module are installed in the electrical compartment;

[0010] A battery system includes a battery pack, an energy storage inverter and at least one battery rack. The at least one battery rack is arranged in the battery compartment, the at least one battery rack is distributed spaced apart along a first direction, and the battery rack is spaced apart from the inner wall of the box. The battery rack includes multiple storage locations, each of which is used to place a battery pack or an energy storage inverter.

[0011] According to the energy storage device of the present application, at least one battery rack is distributed spaced apart along a first direction, the battery rack is spaced apart from the inner wall of the box, and at least one battery rack is arranged in a single row to facilitate air circulation and heat dissipation between the battery racks. At the same time, the collision between the battery racks and between the battery racks and the box can be reduced during the movement of the box, thereby improving the reliability and safety of the energy storage device and facilitating the installation and maintenance of the battery packs and energy storage converters on the battery racks.

[0012] According to one embodiment of the present application, the battery compartment is provided with a first sliding member, which extends in a direction from close to the first opening to close to the rear wall of the box body, and the battery rack is provided with a second sliding member that slides with the first sliding member.

[0013] According to one embodiment of the present application, the storage position is provided with a third sliding member, and the third sliding member extends in a direction from close to the first opening to close to the rear wall of the box body, and the battery pack and the energy storage inverter are both provided with a fourth sliding member that slides with the third sliding member.

[0014] According to one embodiment of the present application, the storage locations include a plurality of storage locations, and the plurality of storage locations are arranged along the second direction.

[0015] According to one embodiment of the present application, the energy storage device further includes: a liquid cooling system and an air conditioning system, the liquid cooling system is connected to the battery system, and the air conditioning system is connected to the battery compartment.

[0016] According to one embodiment of the present application, the liquid cooling system includes a heat exchange tube group, and the inlet and outlet of the heat exchange tube group are both located on the first side wall of the box; or,

[0017] The liquid cooling system includes a heat exchange tube group and a refrigerator. The heat exchange tube group includes a primary pipeline, a secondary pipeline and a tertiary pipeline connected in sequence. The primary pipeline is connected to the refrigerator, the secondary pipeline extends along the second direction, and the tertiary pipeline is connected to the battery system.

[0018] According to one embodiment of the present application, the battery system further includes an insulating bracket, the insulating bracket being arranged at the bottom end of the battery rack along the second direction so that the battery rack is spaced apart from the bottom wall of the box to form a first air duct, and second air ducts are formed between adjacent battery racks, wherein the first air duct is respectively connected to adjacent second air ducts located on both sides of the first air duct;

[0019] The air conditioning system includes at least one air conditioner, which is installed on the first door body and communicates with the corresponding second air duct.

[0020] According to one embodiment of the present application, the fire protection module further includes a fire protection panel, and the fire protection panel is arranged on the second door body.

[0021] According to one embodiment of the present application, the first door body includes a plurality of first door bodies, and the plurality of first door bodies are arranged along the first direction;

[0022] The fire protection module further includes an air intake fan, which is installed on the first door bodies located at both ends of the plurality of first door bodies.

[0023] According to one embodiment of the present application, the first opening and the second opening are arranged on the first side wall of the box body, and the first door body and the second door body are both installed on the first side wall so as to be openable and closable.

[0024] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0026] Figure 1 This is one of the structural diagrams of the energy storage device provided in the embodiment of the present application;

[0027] Figure 2 This is the second structural diagram of the energy storage device provided in the embodiment of the present application;

[0028] Figure 3 This is the third structural diagram of the energy storage device provided in the embodiment of the present application;

[0029] Figure 4 This is the fourth structural diagram of the energy storage device provided in the embodiment of the present application;

[0030] Figure 5 This is the fifth structural diagram of the energy storage device provided in the embodiment of the present application;

[0031] Figure 6 This is the sixth structural diagram of the energy storage device provided in the embodiment of the present application;

[0032] Figure 7 This is the seventh structural diagram of the energy storage device provided in the embodiment of the present application;

[0033] Figure 8 This is the eighth structural diagram of the energy storage device provided in the embodiment of the present application;

[0034] Figure 9 This is the ninth structural diagram of the energy storage device provided in the embodiment of the present application;

[0035] Figure 10 This is the tenth structural diagram of the energy storage device provided in the embodiment of the present application;

[0036] Figure 11 This is the eleventh structural diagram of the energy storage device provided in the embodiment of the present application;

[0037] Figure 12 This is the twelfth structural diagram of the energy storage device provided in the embodiment of the present application;

[0038] Figure 13 This is the thirteenth structural diagram of the energy storage device provided in the embodiment of the present application;

[0039] Figure 14 This is the fourteenth structural diagram of the energy storage device provided in the embodiment of the present application.

[0040] Reference numerals:

[0041] Box body 1, battery compartment 11, first sliding member 111, electrical compartment 12, first opening 13, second opening 14, first side wall 15;

[0042] First door 2, second door 3, fire module 4, fire panel 41, air intake fan 42, fire extinguishing device 43, power distribution module 5, battery system 6, battery pack 61, wiring device 611, base 612, energy storage converter 62, battery rack 63, storage position 631, second sliding member 632, third sliding member 633, fourth sliding member 64, cable 65, insulating bracket 66, first air duct 67, second air duct 68;

[0043] Liquid cooling system 7, heat exchange tube group 71, primary pipeline 711, secondary pipeline 712, tertiary pipeline 713, inlet 714, outlet 715, refrigerator 72, air conditioning system 8, air conditioner 81. DETAILED DESCRIPTION

[0044] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0045] Reference below Figures 1-14 An energy storage device according to an embodiment of the present application is described.

[0046] like Figure 1 and Figure 2 As shown, the energy storage device of an embodiment of the present application includes: a box body 1, a first door body 2, a second door body 3, a fire protection module 4, a power distribution module 5 and a battery system 6.

[0047] The first door 2 and the second door 3 are both installed in the box 1 , and the battery system 6 is installed in the electrical compartment 12 of the box 1 .

[0048] The housing 1 forms a battery compartment 11 with a first opening 13 and an electrical compartment 12 with a second opening 14 .

[0049] A portion of the box body 1 is designed as a battery compartment 11, which has a first opening 13. The first opening 13 is used to install and maintain the battery system 6. There can be one or more first openings 13. One first opening 13 can extend along a first direction, and multiple first openings 13 can be distributed along the first direction to facilitate the installation and maintenance of the battery system 6 in the electrical compartment 12.

[0050] The first direction is the length direction of the box body 1 .

[0051] Another portion of the box body 1 is designed as an electrical compartment 12 . The electrical compartment 12 has a second opening 14 . The second opening 14 is used for installing and maintaining the fire protection module 4 and the power distribution module 5 .

[0052] The second opening 14 and the first opening 13 may be disposed on the same side wall of the box body 1 , or the second opening 14 and the first opening 13 may be disposed on different side walls of the box body 1 .

[0053] The first door 2 can be installed on the box body 1 in an openable and closable manner. The first door 2 is set at the first opening 13 to close the battery compartment 11 to protect the battery system 6 inside the battery compartment 11 from the influence of the external environment. The first door 2 can be connected to the box body 1 in a pivotal manner.

[0054] The second door body 3 can be installed on the box body 1 in an openable and closable manner. The second door body 3 is set at the second opening 14 to close the electrical compartment 12 to protect the fire protection module 4 and the distribution module 5 inside the electrical compartment 12 from the influence of the external environment. The second door body 3 can be connected to the box body 1 in a pivotal manner.

[0055] The fire protection module 4 is installed in the electrical compartment 12. The fire protection module 4 includes but is not limited to a smoke detector, a temperature sensor, a fire extinguishing device 43, etc., so as to improve the response speed when a fire occurs.

[0056] The power distribution module 5 is also installed in the electrical compartment 12. The power distribution module 5 is responsible for managing the power output of the energy storage device, including switchgear and protection devices.

[0057] like Figure 2As shown, the battery system 6 includes a battery pack 61, an energy storage inverter 62 and at least one battery rack 63. At least one battery rack 63 is arranged in the battery compartment 11. At least one battery rack 63 is distributed spaced apart along the first direction. The battery rack 63 is spaced apart from the inner wall of the box body 1. The battery rack 63 includes multiple storage positions 631, and each storage position 631 is used to place the battery pack 61 or the energy storage inverter 62.

[0058] The first direction may be the length direction of the battery compartment 11 .

[0059] The battery pack 61 is the core component of the energy storage device, responsible for storing electrical energy. It is placed in storage space 631 of the battery rack 63. The energy storage converter 62 is used to control the charging and discharging process of the battery pack 61 and is also placed in storage space 631 of the battery rack 63.

[0060] The battery pack 61 may be an integrated structure or a module structure of multiple battery packs 61 .

[0061] The battery rack 63 is installed in the battery compartment 11. The battery rack 63 is used to support and fix the battery pack 61 and the energy storage converter 62. The design of the battery rack 63 can utilize the longitudinal space of the box body 1 and improve the utilization rate of the effective space of the box body 1.

[0062] like Figure 3 and Figure 4 As shown, at least one battery rack 63 is spaced apart and distributed along the first direction, the battery rack 63 is arranged in a single row, and the battery rack 63 maintains a certain distance from the inner wall of the box 1 to facilitate air circulation and heat dissipation. At the same time, it can reduce the collision of adjacent battery racks 63 during the movement of the box 1, improve the reliability of the energy storage device, and also facilitate the installation and maintenance of the battery pack 61 and the energy storage converter 62 on the battery rack 63.

[0063] The spacing between adjacent battery racks 63 and the spacing between the battery racks 63 and the inner wall of the box 1 meet safety regulations.

[0064] According to the energy storage device provided in the embodiment of the present application, by distributing at least one battery rack 63 spaced apart along the first direction, the battery rack 63 is spaced apart from the inner wall of the box 1, and at least one battery rack 63 is arranged in a single row to facilitate air circulation and heat dissipation between the battery racks 63. At the same time, the collision between the battery racks 63 and the battery rack 63 and the box 1 can be reduced during the movement of the box 1, thereby improving the reliability and safety of the energy storage device, and also facilitating the installation and maintenance of the battery pack 61 and the energy storage inverter 62 on the battery rack 63.

[0065] In some embodiments, as Figure 1 and 2As shown, the battery compartment 11 is provided with a first sliding member 111, and the first sliding member 111 extends in a direction from near the first opening 13 to near the rear wall of the box body 1, and the two ends of the first sliding member 111 are respectively spaced from the inner wall of the box body 1 and the first door body 2, and the ends of the battery rack 63 are respectively spaced from the inner wall of the box body 1 and the first door body 2, which is convenient for heat dissipation, and also reduces the collision between the battery rack 63 and the box body 1 or the door body during the movement of the box body 1, thereby protecting the battery rack 63, reducing the risk of electrical disconnection between the battery pack 61 and the energy storage converter 62 due to collision, and improving the reliability of the energy storage device.

[0066] The battery rack 63 is provided with a second sliding member 632 that slides with the first sliding member 111. The second sliding member 632 of the battery rack 63 can slide along the first sliding member 111 to the target position. The battery rack 63 maintains a safety distance from the box body 1 at the target position, so that the battery rack 63 can be pushed in and slid out from the first opening 13, thereby facilitating the installation and maintenance of the battery rack 63 and the box body 1.

[0067] One of the first sliding member 111 and the second sliding member 632 may be a guide rail, a sliding groove or other structures suitable for sliding, and the other of the first sliding member 111 and the second sliding member 632 may be a roller or a slider.

[0068] The second sliding member 632 is installed on the battery rack 63. The second sliding member 632 cooperates with the first sliding member 111. The second sliding member 632 allows the battery rack 63 to slide along the first sliding member 111, thereby reducing friction during the sliding process and improving the stability and convenience of the sliding of the battery rack 63.

[0069] The storage position 631 is provided with a third sliding member 633, and the battery pack 61 and the energy storage converter 62 are provided with a fourth sliding member 64 to cooperate with the third sliding member 633, so as to facilitate the rapid installation and maintenance of the battery pack 61 and the converter.

[0070] In some embodiments, as Figure 1 and 2 As shown, the storage position 631 is provided with a third sliding member 633, and the third sliding member 633 extends from the first opening 13 to the rear wall of the box body 1.

[0071] The battery pack 61 and the energy storage converter 62 are both provided with a fourth sliding member 64 that slides with the third sliding member 633. The battery pack 61 and the energy storage converter 62 can slide along the third sliding member 633, thereby facilitating the installation and maintenance of the battery pack 61 and the energy storage converter 62.

[0072] The fourth sliding member 64 can be installed at the bottom or side of the battery pack 61 and the energy storage converter 62 . The fourth sliding member 64 cooperates with the third sliding member 633 to allow the battery pack 61 and the energy storage converter 62 to slide in the storage position 631 .

[0073] The fourth sliding member 64 cooperates with the third sliding member 633 to form a single-track sliding design or a double-track sliding design.

[0074] When the fourth sliding member 64 and the third sliding member 633 are provided with a group of single-track sliding design, the fourth sliding member 64 can be installed at the bottom of the battery pack 61 and the energy storage inverter 62, and the third sliding member 633 is installed on the bottom wall of the storage position 631; when the fourth sliding member 64 and the third sliding member 633 are provided with two groups of double-track sliding design, the two fourth sliding members 64 can be installed at the bottom or top of the battery pack 61 and the energy storage inverter 62, and the two third sliding members 633 are correspondingly installed on the bottom wall or top of the storage position 631, or, the two fourth sliding members 64 can be respectively installed on the two side walls of the battery pack 61 and the energy storage inverter 62, and the two third sliding members 633 are correspondingly installed on the two side walls of the storage position 631.

[0075] One of the third sliding member 633 and the fourth sliding member 64 can be a guide rail, a sliding groove or other structures suitable for sliding, and the other of the third sliding member 633 and the fourth sliding member 64 can be a roller or a slider to reduce friction during the sliding process.

[0076] In this embodiment, when the battery pack 61 and the energy storage inverter 62 need to be installed or maintained, the battery pack 61 or the energy storage inverter 62 can be pushed to slide along the third sliding member 633 to the appropriate position, thereby facilitating the maintenance or replacement of the battery pack 61 and the energy storage inverter 62.

[0077] In some embodiments, as Figure 1 and 2 As shown, the storage positions 631 include multiple storage positions 631, and the multiple storage positions 631 are arranged along the second direction, which is perpendicular to the first direction. The vertical space of the battery compartment 11 can be fully utilized to increase the storage capacity of the battery compartment 11; and the orderly arrangement of the storage positions 631 makes the position of each battery pack 61 and energy storage inverter 62 easy to identify, which is convenient for daily inspection and maintenance work; at the same time, the number and position of the storage positions 631 can be flexibly configured as needed to accommodate battery packs 61 and energy storage inverters 62 of different models and specifications.

[0078] The second direction is the height direction of the battery rack 63 .

[0079] The number of storage locations 631 is determined by the size of the battery compartment 11 and the number of battery packs 61 and energy storage converters 62 required to be accommodated. The storage locations 631 are arranged along the height direction of the battery rack 63 and can be evenly distributed or optimized according to actual needs.

[0080] The size and shape of each storage location 631 are designed to accommodate exactly one battery pack 61 or energy storage converter 62 , ensuring efficient use of space.

[0081] In some embodiments, as Figure 1 and 2 As shown, the energy storage device further includes: a liquid cooling system 7 and an air conditioning system 8 . The liquid cooling system 7 is connected to the battery system 6 , and the air conditioning system 8 is connected to the battery compartment 11 .

[0082] The energy storage device is equipped with a liquid cooling system 7, which is connected to the battery system 6 via a heat exchange tube group 71 and a chiller 72, effectively reducing the heat generated by the battery during operation. The liquid cooling system 7 may include a liquid cooling plate, a chiller 72, a heat exchange tube group 71, coolant within the heat exchange tube group 71, and other auxiliary components such as a liquid cooling pump, a condenser, and an evaporator.

[0083] The coolant circulates in the heat exchange tube group 71 , bringing the heat of the battery pack 61 and the energy storage converter 62 to a cooling tower or other heat dissipation equipment for dissipation, and then circulates back to the battery system 6 again.

[0084] To further improve heat dissipation efficiency, the energy storage device is also equipped with an air conditioning system 8. This air conditioning system 8 can regulate the temperature within the battery compartment 11 through an air conditioner 81, providing additional cooling and heating support for the battery compartment 11 and ensuring a suitable temperature within the battery compartment 11. The air conditioning system 8 can provide precise temperature control for the battery compartment 11, improving the comfort and safety of the battery compartment 11.

[0085] In this embodiment, the liquid cooling system 7 and the air-conditioning system 8 cooperate with each other. The liquid cooling system 7 is responsible for the direct heat dissipation of the battery system 6, while the air-conditioning system 8 is responsible for the overall temperature regulation of the battery compartment 11 and the gas exchange inside and outside the battery compartment 11, thereby improving the safety of the energy storage device and reducing battery performance degradation or safety accidents caused by overheating.

[0086] It is understood that since container 1 is sealed, harmful and explosive gases generated by the operation of the electrical equipment within it inevitably accumulate, posing a threat to the safety of the equipment. By providing an air conditioning system 8, the system's filtering, ventilation, and airflow conveying mechanisms can be utilized to circulate air between the outside atmosphere and the air within container 1, dissipating heat from the electrical equipment within container 1. This prevents the accumulation of harmful and explosive gases within the container and improves the safety of the energy storage device.

[0087] In some embodiments, as Figure 1 and 2 As shown, the liquid cooling system 7 includes a heat exchange tube group 71 , and an inlet 714 and an outlet 715 of the heat exchange tube group 71 are both located on the first side wall 15 of the box body 1 .

[0088] The inlet 714 and the outlet 715 of the heat exchange tube group 71 are both located on the first side wall 15 of the box body 1. This layout helps to simplify pipeline connections, reduce space occupation, and facilitate installation and maintenance.

[0089] The inlet 714 and outlet 715 of the heat exchange tube group 71 and the first door body 2 and the second door body 3 are all located on the first side wall 15 of the box body 1, that is, the staff can perform various installations and maintenance on the energy storage device from the direction of the first side wall 15 of the box body 1, thereby reducing the operating space required for the energy storage device and increasing the placement density of the energy storage device under a certain space condition, thereby improving space utilization.

[0090] In some embodiments, as Figure 1 and 2 As shown, the liquid cooling system 7 includes a heat exchange tube group 71 and a refrigerator 72. The heat exchange tube group 71 includes a primary pipeline 711, a secondary pipeline 712 and a tertiary pipeline 713 connected in sequence.

[0091] The primary pipeline 711 is in communication with the refrigerator 72 and is used to transport the coolant in the refrigerator 72 to the secondary pipeline 712 .

[0092] The secondary pipeline 712 extends along the second direction. The secondary pipeline 712 is adjacent to the battery system 6 and is used to directly absorb heat generated by the battery system 6 .

[0093] The tertiary pipeline 713 is in communication with the battery system 6. The tertiary pipeline 713 may include multiple tertiary pipelines 713 connected in parallel, with one end of each of the tertiary pipelines 713 communicating with the secondary pipeline 712, and the other ends of each of the tertiary pipelines 713 communicating with the energy storage converter 62 and the battery packs 61 in a one-to-one correspondence, thereby diverting the coolant in the secondary pipeline 712 to the energy storage converter 62 and the battery packs 61.

[0094] In this embodiment, by providing a primary pipeline 711, a secondary pipeline 712 and a tertiary pipeline 713 connected in sequence, the coolant in the refrigerator 72 can be evenly diverted to the energy storage inverter 62 and multiple battery packs 61, thereby improving the heat dissipation efficiency and simplifying the design and maintenance of the energy storage device.

[0095] In some embodiments, as Figure 1 and 2As shown, the liquid cooling system 7 includes a heat exchange tube group 71 and a refrigerator 72. The inlet 714 and the outlet 715 of the heat exchange tube group 71 are both located on the first side wall 15 of the box body 1; the heat exchange tube group 71 includes a primary pipeline 711, a secondary pipeline 712 and a tertiary pipeline 713 connected in sequence. The primary pipeline 711 is connected to the refrigerator 72, the secondary pipeline 712 extends along the second direction, and the tertiary pipeline 713 is connected to the battery system 6.

[0096] In this embodiment, by providing a primary pipeline 711, a secondary pipeline 712 and a tertiary pipeline 713 connected in sequence, and locating the inlet 714 and the outlet 715 of the heat exchange tube group 71 on the first side wall 15 of the box body 1, the heat dissipation efficiency is improved and the design and maintenance of the energy storage device are simplified.

[0097] In some embodiments, as Figure 1 and 2 As shown, the heat exchange tube group 71 is arranged on the door opening side of the box body 1, which reduces the difficulty of installing the heat exchange tube group 71. The inlet and outlet water pipes of the heat exchange tube group 71 enter and are installed through the first side wall 15 of the box body 1 or the bottom wall of the box body 1 to maximize the power density of the energy storage device.

[0098] In some embodiments, as Figure 1 and 2 As shown, the air-conditioning system 8 includes at least one air conditioner 81, and the air conditioner 81 may include one or more air conditioners. The number of air conditioners 81 can be set according to the power of the air conditioner 81, the volume of the battery compartment 11 and the heat load, which can effectively adjust the temperature and humidity in the battery compartment 11.

[0099] At least one air conditioner 81 is installed on the first door body 2, which can conveniently deliver cold air or hot air into the battery compartment 11, and also facilitate the ventilation of harmful and explosive gases accumulated in the box body 1 to the outside of the electrical compartment 12, and also facilitate the maintenance and inspection of the air conditioner 81.

[0100] The battery system 6 also includes an insulating bracket 66, which is arranged at the bottom end of the battery rack 63 along the second direction. The battery rack 63 forms an overhead structure in the box body 11. The battery rack 63 and the bottom wall of the box body 1 are separated to form a first air duct 67, and second air ducts 68 are formed between adjacent battery racks 63. The first air duct 67 is respectively connected to the adjacent second air ducts 68 located on both sides of the first air duct 67.

[0101] When the battery packs 61 and the energy storage converter 62 are placed in the multiple storage spaces 631 of the battery rack 63, the battery rack 63 forms a similar closed area. The overhead structure of the battery rack 63 in the box 11 can help the gas circulation in the box 1 and improve the heat dissipation effect.

[0102] Each battery rack 63 can correspond to one or more insulating brackets 66. When one insulating bracket 66 is provided, the insulating bracket 66 is provided with a vent or the insulating bracket 66 is arranged along a first direction so that the battery rack 63 is separated from the box body 1 to form a first air duct 67; when multiple insulating brackets 66 are provided, the multiple insulating brackets 66 are spaced apart to form a first air duct 67 between adjacent insulating brackets 66.

[0103] Two adjacent second air ducts 68 are connected through the first air duct 67 therebetween, and a plurality of second air ducts 68 are connected to a plurality of first air ducts 67 .

[0104] The air conditioner 81 is connected to the corresponding second air duct 68. The cold air and hot air of the air conditioner 81 can flow into the second air duct 68 on both sides of the first air duct 67 through the first air duct 67, thereby forming an air flow circulation in the box 11 and improving the temperature control effect.

[0105] The insulating bracket 66 can be fixed to the upper and lower sides of the battery rack 63, or only fixed to the lower side of the battery rack 63 to meet the required safety distance requirements.

[0106] When the insulating brackets 66 are fixed to the upper and lower sides of the battery rack 63 , the upper and lower sides of the battery rack 63 are spaced apart from the box body 1 to form a first air duct 67 , thereby further improving the temperature control effect.

[0107] In some embodiments, one first door body 2 may correspond to 1 to 5 battery racks 63 . For example, one first door body 2 may correspond to 2, 3 or 4 battery racks 63 , so as to facilitate the installation and maintenance of the battery system 6 by the staff.

[0108] In some embodiments, as Figure 1 and 2 As shown, the fire protection module 4 further includes a fire protection panel 41 , which is disposed on the second door body 3 .

[0109] The fire protection module 4 also includes a fire protection panel 41 , which is arranged on the second door body 3 . The fire protection panel 41 is used to display the real-time status and operation interface of the fire protection module 4 , so as to facilitate the staff to collect data and operate the fire protection module 4 .

[0110] In some embodiments, as Figure 1 and 2 As shown, the first door body 2 includes multiple first door bodies 2, and the multiple first door bodies 2 are arranged along the first direction; the first door body 2 is designed as multiple independent units, each of which can be opened independently to facilitate access to specific parts in the battery compartment 11; and the design of multiple first door bodies 2 allows maintenance personnel to operate multiple battery racks 63 at the same time, significantly improving maintenance efficiency.

[0111] The width of the fixed structure between adjacent first doors 2 is smaller than the spacing between adjacent battery racks 63 , so as to leave enough installation space to complete the installation of the battery pack 61 and the energy storage converter 62 .

[0112] In some embodiments, multiple air conditioners 81 are respectively installed on multiple first doors 2 , that is, the multiple air conditioners 81 are arranged along the first direction to improve the uniformity of the temperature in the battery compartment 11 .

[0113] The first opening 13 and the second opening 14 are arranged along the first direction, so that the side wall of the box body 1 can be effectively utilized.

[0114] The fire fighting module 4 further includes an air intake fan 42, which can improve the fire fighting efficiency and ensure sufficient air circulation in emergency situations.

[0115] The air intake fan 42 is installed on the first door body 2 at both ends of the multiple first door bodies 2, which can circulate and guide the air in the battery compartment 11, reduce the impact of the heat generated by the electrical equipment of the fire protection module 4 during operation on the battery compartment 11, and effectively remove smoke and heat from the battery compartment 11 in the event of a fire.

[0116] In some embodiments, the air conditioner 81 and the air intake fan 42 are installed on different first doors 2 to extend the circulation path of the cold air or hot air discharged by the air conditioner 81 and improve the temperature uniformity in the battery compartment 11.

[0117] In some embodiments, as Figure 1 and 2 As shown, the first opening 13 and the second opening 14 are provided on the first side wall 15 of the box body 1 , and the first door body 2 and the second door body 3 are both installed on the first side wall 15 so as to be openable and closable.

[0118] In this embodiment, the first door body 2 and the second door body 3 are located on the first side wall 15 of the box body 1, that is, the first door body 2 and the second door body 3 are arranged on the same side. The energy storage device adopts a single-sided door opening method, and the battery pack 61, energy storage inverter 62, fire protection module 4 and distribution module 5 and other devices are installed from one side of the box body 1, which greatly reduces the footprint and improves the power density per unit area of ​​the system.

[0119] In terms of system layout, Figure 7 As shown, the boxes 1 of the energy storage devices can be placed in a single row. Since the doors of the boxes 1 of the energy storage devices open in the same direction, an installation channel can be reserved on the front side of the boxes 1 of the energy storage devices; or Figure 8 As shown, the boxes 1 of the energy storage device can also be placed in two rows in parallel, with the unopened sides of the boxes 1 facing each other and the opened sides of the boxes 1 facing away from each other, and an installation channel reserved on the opened side of the boxes 1.

[0120] On the premise that the container size specifications and the number of battery packs 61 of the same specifications are consistent, the comparison of the area occupied by the box 1 of the energy storage device with a single-side door and multiple-side doors is as follows:

[0121] First, the length and depth of the box 1 of the energy storage device are the same.

[0122] like Figure 9 and Figure 10 As shown, assuming that the size of a door is X, when it is a single door, the area occupied by the box body 1 of the energy storage device with doors opened on all sides is 9X2, and the area occupied by the door opened on one side is 4X2, saving more than 50% of the area.

[0123] like Figure 11 and Figure 12 As shown, when there are N doors, the area occupied by the front, back, left, and right doors of the energy storage device box 1 is (N+2)2X2, and the area occupied by the door on one side is (N+1)2X2, which saves space.

[0124] Secondly, the length and depth of the box 1 of the energy storage device are different.

[0125] like Figure 13 and Figure 14 As shown, assuming the size of a door is X, the area occupied by the door on all sides of the energy storage device box 1 is (N+2)*(M+2)X2, and the area occupied by the door on one side is (N+1)*(M+1)X2, and the area saved is Wherein, N≥2, M≥1, N>M, and N and M are integers.

[0126] According to the above energy storage device box 1 size design, regardless of the length and width of the box 1, the battery racks 63 are placed in a single row in the box 1, and the battery racks 63 are provided with at least one column. The battery racks 63 are placed at a certain safety distance from the upper, lower, left and right sides of the box 1.

[0127] like Figure 3 、 Figure 4 and Figure 5 As shown, the battery pack 61 can be a whole or divided into several small packs, which are assembled together using a base 612. The small battery pack near the door side of the box 1 of the energy storage device contains a wiring device 611 for easy connection with the outside.

[0128] like Figure 6 As shown, each row of energy storage converter modules 62 is cascaded via copper busbars, with a safety-compliant distance between each row of battery packs 61. Safety-compliant distances are also maintained in the top, bottom, front, back, left, and right sides of the battery compartments 11. The battery compartments 11 of the two energy storage device housings 1 are fixedly connected using high-voltage terminals and cables 65 to meet safety regulations.

[0129] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0130] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0131] In the description of this application, "first feature" and "second feature" may include one or more of the features.

[0132] In the description of this application, “plurality” means two or more.

[0133] In the description of the present application, a first feature being “on” or “under” a second feature may include the first and second features being in direct contact with each other, or the first and second features being in contact with each other not directly but via another feature therebetween.

[0134] In the description of this application, a first feature “on”, “above” and “above” a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0135] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0136] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. An energy storage device, characterized in that: include: a housing forming a battery compartment having a first opening and an electrical compartment having a second opening; a first door body, the first door body being installed on the box body in an openable and closable manner, and the first door body being arranged at the first opening to close the battery compartment; a second door body, the second door body being installed on the box body in an openable and closable manner, and the second door body being arranged at the second opening to close the electrical compartment; A fire protection module and a power distribution module, wherein the fire protection module and the power distribution module are installed in the electrical compartment; A battery system includes a battery pack, an energy storage inverter and at least one battery rack. The at least one battery rack is arranged in the battery compartment and is spaced apart and distributed along a first direction. A safety gap is provided between the battery rack and the inner wall of the box. The battery rack includes multiple storage locations, each of which is used to place a battery pack or an energy storage inverter.

2. The energy storage device according to claim 1, characterized in that The battery compartment is provided with a first sliding member, which extends from close to the first opening to close to the rear wall of the box body, and the battery rack is provided with a second sliding member that is slidably matched with the first sliding member.

3. The energy storage device according to claim 1, characterized in that The storage position is provided with a third sliding member, and the third sliding member extends in a direction from close to the first opening to close to the rear wall of the box body. The battery pack and the energy storage converter are both provided with a fourth sliding member that slides with the third sliding member.

4. The energy storage device according to claim 3, characterized in that The storage locations include a plurality of storage locations, and the plurality of storage locations are arranged along a second direction, and the second direction is perpendicular to the first direction.

5. The energy storage device according to claim 1, characterized in that The energy storage device further includes: a liquid cooling system and an air conditioning system, wherein the liquid cooling system is in communication with the battery system, and the air conditioning system is in communication with the battery compartment.

6. The energy storage device according to claim 5, characterized in that The liquid cooling system includes a heat exchange tube group, and the inlet and outlet of the heat exchange tube group are both located on the first side wall of the box; or, The liquid cooling system includes a heat exchange tube group and a refrigerator. The heat exchange tube group includes a primary pipeline, a secondary pipeline and a tertiary pipeline connected in sequence. The primary pipeline is connected to the refrigerator, the secondary pipeline extends along the second direction, and the tertiary pipeline is connected to the battery system.

7. The energy storage device according to claim 5, characterized in that The battery system further includes an insulating bracket disposed along a second direction at a bottom end of the battery rack so as to separate the battery rack from the bottom wall of the box to form a first air duct, and second air ducts are formed between adjacent battery racks, wherein the first air duct is in communication with adjacent second air ducts located on both sides of the first air duct; The air conditioning system includes at least one air conditioner, which is installed on the first door body and communicates with the corresponding second air duct.

8. The energy storage device according to any one of claims 1 to 7, characterized in that: The fire protection module further includes a fire protection panel, which is arranged on the second door body.

9. The energy storage device according to any one of claims 1 to 7, characterized in that: The first door bodies include a plurality of first door bodies, and the plurality of first door bodies are arranged along the first direction; The fire protection module further includes an air intake fan, which is installed on the first door bodies located at both ends of the plurality of first door bodies.

10. The energy storage device according to any one of claims 1 to 7, characterized in that: The first opening and the second opening are arranged on the first side wall of the box body, and the first door body and the second door body are both installed on the first side wall in an openable and closable manner.

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