Energy storage container

Abstract

The energy storage container comprises a container body, partition pieces and a container door, and the container body comprises a side wall, a top wall and a bottom wall which are arranged in the circumferential direction; the separator is connected with the top wall and the bottom wall and divides the inner cavity of the box body into a battery accommodating cavity and a control accommodating cavity; the box doors are rotationally connected with the side walls and seal the inner cavity of the box body, and the box doors are closed in the opposite directions or opened in the opposite directions along the longitudinal center line of the box body. The interior of the box body is divided into the battery accommodating cavity and the control accommodating cavity by arranging the separator, so that the battery pack and the electrical fire control part are effectively isolated; the box doors are symmetrically arranged along the longitudinal center line of the box body, so that single-side settlement or deformation caused by uneven stress is avoided when the box doors are externally hung with equipment.

Description

Technical Field

[0001] This application relates to the field of energy storage equipment technology, and in particular to energy storage containers. Background Technology

[0002] With the development of energy storage technology, containerized energy storage devices have been widely used in new energy power generation, grid frequency regulation, and industrial and commercial energy storage due to their advantages of high efficiency integration, convenient transportation, and adaptability to complex environments. Common energy storage containers mostly adopt the standard 20-foot size, which can accommodate a large number of battery packs and electrical systems, and meet basic safety and thermal management requirements.

[0003] In existing technologies, energy storage containers typically require the separation of the battery compartment from the electrical and fire control compartment to reduce safety risks and optimize thermal management. For 20-foot containers, a partition wall structure is usually used, with the battery compartment located at the front and opened through a front door, while the electrical and fire control compartment has a separate door on the side. However, for smaller energy storage containers (such as 10-foot containers), due to limited side space, the electrical and fire control compartment cannot have a side door. Therefore, a large front door is generally used for the battery compartment, and a small front door is used for the electrical and fire control compartment.

[0004] However, small-sized energy storage containers are usually equipped with multiple door-mounted water chillers to cool the battery compartment. The weight of these water chillers is mainly supported by the long side columns of the battery compartment doors, which leads to problems such as door deformation and settlement. Utility Model Content

[0005] Based on this, this application provides an energy storage container that allows the battery housing and control housing in a small-sized energy storage container to share a common door, while ensuring the isolation between the battery housing and control housing.

[0006] In a first aspect, this application provides an energy storage container, which includes:

[0007] The enclosure includes side walls, a top wall, and a bottom wall arranged circumferentially.

[0008] The partition, connected to the top and bottom walls, divides the internal cavity of the housing into a battery housing cavity and a control housing cavity;

[0009] The cabinet door is a rotating connection to the side wall and seals the internal cavity of the cabinet. The cabinet door can close facing each other or open away from each other along the longitudinal centerline of the cabinet.

[0010] In one embodiment, the cabinet door includes a first door panel and a second door panel arranged symmetrically, as well as a third door panel and a fourth door panel arranged symmetrically;

[0011] The second and fourth door panels are separated into a battery housing section and a control housing section by a partition.

[0012] In one embodiment, the second door panel is provided with:

[0013] A fan, fixed to the battery housing section of the second door panel, is used to expel gas from the battery housing cavity;

[0014] The control box includes a battery housing portion spanning the second door panel and a control housing portion spanning the second door panel; the distance between the control box and the longitudinal centerline of the housing is greater than the distance between the fan and the longitudinal centerline of the housing.

[0015] In one embodiment, the control box has a wire channel for connecting the fan and the control housing cavity; the wire channel extends out of the housing from the battery housing portion of the control box and enters the housing from the control housing portion of the control box.

[0016] In one embodiment, the control box located in the battery housing portion has a battery housing cavity waist hole, and the control box located in the control housing portion has a control housing cavity waist hole;

[0017] The fan's connecting wires pass out of the battery housing cavity through the waist hole and enter the control housing cavity through the waist hole.

[0018] In one embodiment, a protective element is provided at the connection between the battery receiving cavity waist hole, the control receiving cavity waist hole and the wire groove.

[0019] In one embodiment, the first door panel and the third door panel are provided with crossbeams and vertical beams to improve the structural strength of the first door panel and the third door panel.

[0020] In one embodiment, a heat sink is provided on the third door panel, located on the side of the third door panel near the side wall, for reducing the temperature of the battery housing cavity.

[0021] In one embodiment, the door is connected to the side wall by hinges.

[0022] In one embodiment, the separator is provided with seals at both ends near the door.

[0023] The aforementioned energy storage container, through the installation of partitions, divides the interior of the container into a battery housing and a control housing, effectively isolating the battery pack from electrical and fire control components. When all doors are closed, both the control and battery housings are sealed, reducing the mutual impact caused by battery thermal management and electrical faults, thus improving overall safety and reliability. The symmetrical arrangement of doors along the longitudinal centerline of the container ensures that uneven stress on the doors prevents unilateral settlement or deformation when external equipment is mounted. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of the structure of an energy storage container in some embodiments of this application.

[0026] Figure 2 This is a top view of an energy storage container in some embodiments of this application.

[0027] Figure 3 This is a schematic diagram of the external structure of the second door panel in some embodiments of this application.

[0028] Figure 4 This is a schematic diagram of the internal structure of the second door panel in some embodiments of this application.

[0029] Figure 5 This is a schematic diagram of the internal structure of the third door panel in some embodiments of this application.

[0030] Explanation of icon numbers:

[0031] 100. Top wall; 102. Bottom wall; 104. First side wall; 106. Second side wall; 108. Battery housing cavity; 110. Control housing cavity; 112. Divider; 200. First door panel; 202. Second door panel; 204. Third door panel; 206. Fourth door panel; 208. Heat sink; 210. Ventilation window; 212. Fan; 214. Control box; 216. First inner cable tray; 218. Second inner cable tray; 220. Outer cable tray; 222. Waist hole of battery housing cavity; 224. Waist hole of control housing cavity; 226. Battery housing part of second door panel; 228. Control housing part of second door panel; 230. Crossbeam; 232. Vertical beam; 300. Hinge; X. Longitudinal centerline of the enclosure. Detailed Implementation

[0032] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0033] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0035] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0036] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0037] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0038] The applicant noted that small-sized energy storage containers (10-foot containers) cannot have side doors. Therefore, the doors are typically designed to correspond to the dimensions of the battery housing and electrical / fire control chambers to ensure their airtightness. The battery housing door is larger than the control chamber door. Small-sized energy storage containers usually have multiple door-mounted water chillers for cooling the battery packs. The weight of these chillers is supported by the columns of the battery housing. The large size and weight of the doors can cause uneven settlement of the battery housing doors, leading to problems opening them during later maintenance and causing the sealing strips around the battery housing doors to fail.

[0039] To address the problems in the relevant technologies, firstly, referring to... Figure 1 and Figure 2 One embodiment of this application provides an energy storage container, including a container body, a partition 112, and a door. The container body includes a side wall, a top wall 100, and a bottom wall 102 arranged circumferentially. The partition 112 is connected to the top wall 100 and the bottom wall 102, dividing the internal cavity of the container body into a battery receiving cavity 108 and a control receiving cavity 110. The door is rotatably connected to the side wall and seals the internal cavity of the container body. The door closes towards each other or opens away from each other along the longitudinal centerline X of the container body.

[0040] Specifically, the enclosure includes circumferentially arranged side walls, a top wall 100, and a bottom wall 102. The side walls include a first side wall 104 and a second side wall 106. The first side wall 104, the partition 112, the top wall 100, and the bottom wall 102 form a control cavity 110 open at both ends for accommodating electrical fire control components. The second side wall 106, the partition 112, the top wall 100, and the bottom wall 102 form a battery cavity 108 open at both ends for accommodating battery packs. The partition 112 is arranged parallel to the side walls and close to the first side wall 104, making the battery cavity 108 larger than the control cavity 110 to accommodate as many battery packs as possible. The enclosure doors are rotatably fixed at both ends of the first side wall 104 and the second side wall 106. When all enclosure doors are closed, the control cavity 110 and the battery cavity 108 inside the enclosure are sealed. The doors are symmetrically arranged about the longitudinal center line X of the box body. Doors on the same side can close towards each other or open away from each other along the longitudinal center line X of the box body.

[0041] In this embodiment, by setting a separator 112, the interior of the enclosure is divided into a battery housing cavity 108 and a control housing cavity 110, effectively isolating the battery pack from the electrical fire control components. When all doors are closed, both the control housing cavity 110 and the battery housing cavity 108 are sealed, reducing the mutual influence caused by battery thermal management and electrical faults, and improving overall safety and reliability. The doors are arranged symmetrically along the longitudinal centerline X of the enclosure to ensure that when external equipment is mounted, uneven stress on one side prevents settlement or deformation.

[0042] Please continue to refer to Figure 1 and Figure 2 In some embodiments, the door includes a first door panel 200 and a second door panel 202 arranged symmetrically, as well as a third door panel 204 and a fourth door panel 206 arranged symmetrically; wherein the second door panel 202 and the fourth door panel 206 are separated by a separator 112 into a battery housing portion and a control housing portion.

[0043] Specifically, the first door panel 200 and the third door panel 204 are located at opposite ends of the battery housing cavity 108, and when the first door panel 200 and the third door panel 204 are in the closed state, they do not completely cover both ends of the battery housing cavity 108. The second door panel 202 and the fourth door panel 206 are located at opposite ends of the housing, and when closed, the second door panel 202 and the fourth door panel 206 are divided into a battery housing section and a control housing section. Specifically, when the battery housing section 226 of the second door panel is closed, the second door panel 202 covers a portion of the battery housing cavity 108; when the control housing section 228 of the second door panel is closed, the second door panel 202 covers a portion of the control housing cavity 110; when the battery housing section of the fourth door panel 206 is closed, the fourth door panel 206 covers a portion of the battery housing cavity 108; when the control housing section of the fourth door panel 206 is closed, the fourth door panel 206 covers a portion of the control housing cavity 110.

[0044] When the door is closed, the first door panel 200, the battery-accommodating portion 226 of the second door panel, the battery-accommodating portions of the third door panel 204 and the fourth door panel 206, the second side wall 106, the top wall 100, the bottom wall 102, and the partition 112 together constitute a sealed battery-accommodating cavity 108; the control-accommodating portion 228 of the second door panel, the control-accommodating portion of the fourth door panel 206, the first side wall 104, the top wall 100, the bottom wall 102, and the partition 112 together constitute a sealed control-accommodating cavity 110.

[0045] In this embodiment, the symmetrical arrangement of multiple door panels satisfies the sealing requirements of both the battery housing 108 and the control housing 110. Furthermore, the partitioned arrangement effectively distributes the weight of the large door panels and the additional load from external equipment, reducing the size and weight of the first door panel 200 and the second door panel 202. This avoids problems such as difficulty in opening the doors and failure of the sealing strips due to uneven settlement. In addition, the separator 112 separates the battery housing 108 and the control housing 110 into different sized compartments. Since the second door panel 202 and the fourth door panel 206 are larger than the dimensions at both ends of the control housing 110, the sealing method of the control housing 110 is changed to a sealing method where the separator 112 seals the second door panel 202 and the fourth door panel 206 independently, without needing to cooperate with other parts for sealing. Similarly, the sealing of the battery housing 108 only relies on the seal between the first door panel 200 and the second door panel 202, allowing for targeted opening or closing of the battery housing 108 door panel while ensuring that other areas remain sealed.

[0046] Please refer to Figure 3 and Figure 4In some embodiments, a fan 212 and a control box 214 are provided on the second door panel 202; the fan 212 is fixed to the battery housing portion 226 of the second door panel for discharging gas from the battery housing cavity 108; the control box 214 includes a control housing portion 228 spanning the battery housing portion 226 of the second door panel and the second door panel; the distance between the control box 214 and the longitudinal center line X of the housing is greater than the distance between the fan 212 and the longitudinal center line X of the housing.

[0047] The fan 212 is mainly used to dissipate heat and exhaust air from the battery housing 108. During the operation of the battery, heat and some exhaust gas are generated. The fan 212 exhausts these heat and exhaust gases from the battery housing 108 through forced ventilation, thereby reducing the internal temperature and preventing the battery from overheating and thermal runaway.

[0048] The control box 214 has a wire channel or a wire channel along its edge. The wire channel is used to accommodate the wiring between the fan 212 and the control housing 110. Since the second door panel 202 is sealed to the partition 112 when closed, the wiring of the fan 212 is blocked by the partition 112 when it runs inside. External wiring is prone to problems such as wire aging and physical damage, requiring more frequent inspection and maintenance, increasing the complexity and cost of maintenance work, and also affecting the overall reliability of the equipment.

[0049] Specifically, the cable trays include a first inner cable tray 216, a second inner cable tray 218, and an outer cable tray 220. The control box 214 located in the battery housing section has a battery housing cavity opening 222, and the control box 214 located in the control housing section has a control housing cavity opening 224. The first inner cable tray 216 is located in the battery housing section 226 of the second door panel. When the fan 212 cable approaches the partition 112, the fan 212 cable passes through the battery housing cavity opening 222 out of the container and into the outer cable tray 220, exiting the battery housing cavity 108. After the fan 212 cable passes through the partition 112 from the outer cable tray 220, it passes through the control housing cavity opening 224 into the control housing cavity 110, enters the second inner cable tray 218, and connects to the fire protection electrical control components in the control housing cavity 110.

[0050] Furthermore, protective components are provided at the connection points between the battery receiving cavity waist hole 222, the control receiving cavity waist hole 224, and the wire trough. These components prevent the intrusion of dust, moisture, or other impurities, while also protecting the connecting wires from external damage, ensuring the stability and safety of the overall electrical connection. For example, the protective component can be a sludge-proof sealant.

[0051] In this embodiment, since the second door panel 202 is sealed to the partition 112 after closing, a single internal wiring cannot pass through the partition 112, and the second door panel 202 cannot be opened to create a hole in the partition 112. Through the design of the waist hole and the internal wiring of the wire trough, the wire trough adopts a three-section layout of the first inner wire trough 216, the outer wire trough 220, and the second inner wire trough 218. Combined with the waist hole 222 of the battery housing cavity and the waist hole 224 of the control housing cavity, the fan 212 wiring can smoothly enter the control housing cavity 110 from the battery housing cavity 108 without additional openings or winding, ensuring the sealing integrity of the enclosure. The fan 212 is fixed to the battery housing portion 226 of the second door panel, which can quickly expel heat and exhaust gas from the battery housing cavity 108, reduce the cavity temperature, and prevent battery overheating and thermal runaway.

[0052] Please refer to Figure 5 In some embodiments, a heat sink 208 is provided on the third door panel 204. The heat sink 208 is located on the side of the third door panel 204 near the side wall and is used to reduce the temperature of the battery housing cavity 108.

[0053] The first door panel 200 and the third door panel 204 are provided with a horizontal beam 230 and a vertical beam 232 to improve the structural strength of the first door panel 200 and the third door panel 204.

[0054] Specifically, the third door panel 204 is provided with multiple horizontal beams 230 and multiple vertical beams 232, and the area between the horizontal beams 230 and the vertical beams 232 forms a space for placing the heat sink 208, so that the heat sink 208 is fixed to the side of the third door panel 204 near the second side wall 106. The third door panel 204 is also provided with a ventilation window 210, located at the bottom of the third heat sink 208. During operation, the heat sink 208 absorbs heat from inside the battery housing 108 and dissipates the heat to the external environment through a heat exchange system. The ventilation window 210 allows for air exchange when the temperature changes, preventing heat accumulation in localized areas and improving overall heat dissipation uniformity. The heat sink 208 can be a door-mounted water-cooled unit, and the ventilation window 210 is a louvered window.

[0055] Furthermore, the door and side wall are connected by hinges 300. In order to enhance the stability of the connection between the door and the box body, the number of hinges 300 is increased on the door and the box body. For example, the number of hinges 300 is 5.

[0056] In this embodiment, by providing a horizontal beam 230 and a vertical beam 232 on the third door panel 204, the overall rigidity of the door panel is enhanced. The heat dissipation component 208 is located close to the second side wall 106, reducing the pressure on the hinge 300 and the housing, preventing deformation caused by long-term use or external pressure, and improving structural stability and durability. The door and side wall are stably connected by multiple hinges 300, and combined with a sealing structure, it can effectively prevent external dust, moisture, or pollutants from entering the battery housing cavity 108, ensuring the cleanliness of the internal environment and reducing the failure rate.

[0057] In some embodiments, the partition 112 is provided with seals at both ends near the door.

[0058] Specifically, the outer periphery of the cabinet door is also provided with a sealing element. When the cabinet door is closed, the first door panel 200, the second door panel 202, the top wall 100, the bottom wall 102, the partition 112, and the second side wall 106 are sealed by the sealing element; the third door panel 204, the fourth door panel 206, the top wall 100, the bottom wall 102, the partition 112, and the first side wall 104 are sealed by the sealing element.

[0059] In this embodiment, since the cabinet door is a symmetrical door and the heat dissipation component 208 is installed close to the second side wall 106, the cabinet door will not be too large or too heavy, which would cause uneven settlement of the cabinet door and make it impossible to open. It will also prevent the sealing strip on the outer perimeter of the cabinet door from being over-compressed, thus improving the sealing performance and durability of the storage tank.

[0060] In the description of this specification, references to terms such as "some embodiments," "other embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative descriptions of the above terms do not necessarily refer to the same embodiments or examples.

[0061] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0062] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. An energy storage container, characterized in that, The energy storage container includes: The enclosure includes side walls, a top wall, and a bottom wall arranged circumferentially; A separator, connected to the top wall and the bottom wall, divides the internal cavity of the housing into a battery housing cavity and a control housing cavity; The box door is rotatably connected to the side wall and seals the internal cavity of the box. The box door can close facing each other or open away from each other along the longitudinal center line of the box.

2. The energy storage container according to claim 1, characterized in that, The cabinet door includes a first door panel and a second door panel arranged symmetrically, as well as a third door panel and a fourth door panel arranged symmetrically; The second door panel and the fourth door panel are separated into a battery housing portion and a control housing portion by the partition.

3. The energy storage container according to claim 2, characterized in that, The second door panel has: A fan, fixed to the battery housing portion of the second door panel, is used to exhaust gas from the battery housing cavity; The control box includes a battery housing portion spanning the second door panel and a control housing portion spanning the second door panel; the distance between the control box and the longitudinal centerline of the housing is greater than the distance between the fan and the longitudinal centerline of the housing.

4. The energy storage container according to claim 3, characterized in that, The control box has a wire channel for connecting the fan and the control housing cavity; the wire channel extends out of the housing from the battery housing part of the control box and enters the housing from the control housing part of the control box.

5. The energy storage container according to claim 4, characterized in that, The control box located in the battery housing portion has a battery housing cavity waist hole, and the control box located in the control housing portion has a control housing cavity waist hole; The connecting wire of the fan passes out of the battery housing cavity through the waist hole of the battery housing cavity and enters the control housing cavity through the waist hole of the control housing cavity.

6. The energy storage container according to claim 5, characterized in that, Protective components are provided at the connection points between the battery receiving cavity waist hole, the control receiving cavity waist hole and the wire groove.

7. The energy storage container according to claim 2, characterized in that, The first door panel and the third door panel are provided with horizontal beams and vertical beams to improve the structural strength of the first door panel and the third door panel.

8. The energy storage container according to claim 2, characterized in that, A heat dissipation component is provided on the third door panel, which is located on the side of the third door panel near the side wall, and is used to reduce the temperature of the battery housing cavity.

9. The energy storage container according to claim 1, characterized in that, The door is connected to the side wall by a hinge.

10. The energy storage container according to claim 1, characterized in that, The separator is equipped with sealing elements at both ends near the door.

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