Energy storage container
Patent Information
- Application Number
- CN202522048322.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-23
- Publication Date
- 2026-09-15
- Estimated Expiration
- 2035-09-23
AI Technical Summary
[0002]在相关技术中,储能集装箱通常会在其前侧壁上设置空调系统、除湿机等,以对整个集装箱的内部进行降温或除湿,进而导致储能集装箱的前侧壁具有凸出的结构,既不美观,还会增大储能集装箱的占地面积
[0010] This utility model discloses an energy storage container where the refrigeration mechanism is located at the top of the container body. Compared to placing the refrigeration mechanism on the side of the container body, this eliminates the need to reserve space for the refrigeration mechanism on the side of the container body. This not only reduces the footprint of the energy storage container and facilitates the side-by-side installation of multiple energy storage containers but also improves the aesthetics of the container. Furthermore, the container body includes mutually isolated battery and electrical compartments, allowing the battery packs to be housed in the battery compartment and the electrical components in the electrical compartment. This prevents interference between the battery packs and electrical components, thereby improving the safety and performance of the energy storage container.
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Figure CN224759446U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of battery technology, and in particular to an energy storage container. Background Technology
[0002] In related technologies, energy storage containers typically have air conditioning systems and dehumidifiers installed on their front side walls to cool or dehumidify the interior. This results in a protruding structure on the front side wall, which is not only unsightly but also increases the container's footprint. Furthermore, in such containers, battery packs and electrical components are often housed in the same installation space, which can easily lead to interference between them, affecting the safety and performance of the energy storage container. Utility Model Content
[0003] The purpose of this utility model is to provide an energy storage container that is not only more aesthetically pleasing, but also improves the safety and performance of the energy storage container.
[0004] To achieve the above objectives, the following technical solution is provided:
[0005] Energy storage containers, including:
[0006] The container body includes a receiving cavity and a first partition disposed within the receiving cavity, the first partition dividing the receiving cavity into a battery compartment and an electrical compartment;
[0007] A refrigeration mechanism is located on the top of the outer side of the container body; the refrigeration mechanism includes refrigeration components;
[0008] A cooling component, which is connected to the refrigeration component, is partially located in the battery compartment and partially located in the electrical compartment.
[0009] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0010] This utility model discloses an energy storage container where the refrigeration mechanism is located at the top of the container body. Compared to placing the refrigeration mechanism on the side of the container body, this eliminates the need to reserve space for the refrigeration mechanism on the side of the container body. This not only reduces the footprint of the energy storage container and facilitates the side-by-side installation of multiple energy storage containers but also improves the aesthetics of the container. Furthermore, the container body includes mutually isolated battery and electrical compartments, allowing the battery packs to be housed in the battery compartment and the electrical components in the electrical compartment. This prevents interference between the battery packs and electrical components, thereby improving the safety and performance of the energy storage container. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the structure of the energy storage container in an embodiment of this utility model;
[0012] Figure 2 This is a partial structural diagram of the container body in an embodiment of the present utility model.
[0013] Figure label:
[0014] 1. Container body; 11. Reception cavity; 111. Battery compartment; 112. Electrical compartment; 1121. First chamber; 1122. Second chamber; 12. First partition; 13. Column; 14. Second partition; 2. Refrigeration mechanism; 21. Output pipeline; 22. Return pipeline; 3. Cooling components; 31. First cold plate; 32. Second cold plate; 4. Energy storage unit; 41. Battery pack; 42. High voltage box. Detailed Implementation
[0015] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.
[0016] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.
[0017] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0018] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are used only for the convenience of describing this utility model and for 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. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0019] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" 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 mechanical connection or an electrical connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0020] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0021] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0022] like Figure 1 and Figure 2 As shown, this embodiment provides an energy storage container, including a container body 1, a refrigeration mechanism 2, and a cooling component 3. The container body 1 includes a receiving cavity 11 and a first partition 12 disposed within the receiving cavity 11, dividing the receiving cavity 11 into a battery compartment 111 and an electrical compartment 112. The refrigeration mechanism 2 is located on the top of the outer side of the container body 1. The refrigeration mechanism 2 includes a refrigeration component. The cooling component 3 is connected to the refrigeration component, with part of the cooling component 3 located within the battery compartment 111 and another part located within the electrical compartment 112. The battery compartment 111 is used to accommodate a battery pack 41. The electrical compartment 112 is used to accommodate electrical components such as a high-voltage box 42 that are electrically connected to the battery pack 41.
[0023] In this embodiment of the energy storage container, the refrigeration mechanism 2 is located on the top of the container body 1. Compared to placing the refrigeration mechanism 2 on the side of the container body 1, there is no need to reserve space for the refrigeration mechanism 2 on the side of the container body 1. This not only reduces the footprint of the energy storage container and facilitates the side-by-side arrangement of multiple energy storage containers, but also improves the aesthetics of the energy storage container. At the same time, the container body 1 includes mutually isolated battery compartment 111 and electrical compartment 112. The battery pack 41 can be placed in the battery compartment 111, and the electrical components can be placed in the electrical compartment 112 to avoid mutual interference between the battery pack 41 and the electrical components, which is beneficial to improving the safety and performance of the energy storage container.
[0024] In some embodiments, the refrigeration component contains a refrigerant that can circulate between the cooling component 3 and the refrigeration component, thereby directly cooling the receiving cavity 11 and improving the cooling effect.
[0025] It should be noted that multiple battery cells (such as multiple battery cells with equal capacity and internal resistance) are connected in series or in parallel to form a battery pack. The battery pack 41 is a complete functional unit that can directly output electrical energy, formed by placing the battery pack, battery management system (BMS), thermal management system, electrical connection system (high-voltage / low-voltage connectors, wiring harnesses, etc.), structural components (casing, brackets, etc.) into the battery box and sealing it.
[0026] The battery enclosure refers to a closed or semi-closed structure made of materials such as metal and plastic. It provides installation space for components such as the battery pack, BMS, thermal management system, and electrical connection system, serving as the physical carrier for these components. Through a reasonable structural design, these components are secured within the enclosure, ensuring they maintain a relatively stable position during battery pack 41 operation and preventing damage or loosening of connections due to vibration, impact, or other factors. The design and manufacture of the battery enclosure must meet the safety, reliability, and functionality requirements of the battery pack 41 under different usage scenarios.
[0027] The battery casing can be cast from materials such as steel plates and aluminum alloys, or it can be made from lightweight materials (such as glass fiber reinforced composite materials or carbon fiber reinforced composite materials).
[0028] The battery box can be cylindrical, cuboid, or cube, etc.
[0029] In some embodiments, such as Figure 2 Combination Figure 1 As shown, the refrigeration mechanism 2 also includes an output pipe 21, one end of which is connected to the refrigeration component and the other end of which is connected to the cooling component 3, thereby delivering the refrigerant from the refrigeration component to the cooling component 3 through the output pipe 21. Exemplarily, the refrigeration mechanism 2 also includes a circulation pump located in the output pipe 21, thereby promoting refrigerant circulation.
[0030] Furthermore, a first pipeline limiting component is provided inside the receiving cavity 11, and the output pipeline 21 is connected to the first pipeline limiting component. The output pipeline 21 is then fixed by the first pipeline limiting component, thereby improving the stability of the installation of the output pipeline 21 and avoiding problems such as leakage.
[0031] In some embodiments, the output pipe 21 is snapped into place with the first pipe limiting member, thereby facilitating quick assembly and disassembly of the output pipe 21 and improving the convenience of assembly and subsequent maintenance of the output pipe 21. For example, the first pipe limiting member is a pipe clip.
[0032] In some embodiments, the receiving cavity 11 is provided with a column 13 for mounting the battery pack 41 or electrical components. Furthermore, the first pipeline limiting member is provided on the column 13, thereby eliminating the need for a separate mounting structure for the first pipeline limiting member, which helps to simplify the structure of the energy storage container and improve the space utilization of the energy storage container.
[0033] In some embodiments, the refrigeration mechanism 2 further includes a return pipe 22, one end of which is connected to the refrigeration component and the other end of which is connected to the cooling component 3; thereby, the refrigerant in the cooling component 3 is sent back to the refrigeration component through the return pipe 22 to realize refrigerant circulation.
[0034] In some embodiments, a second pipeline limiting member is provided in the receiving cavity 11, and the return pipeline 22 is connected to the second pipeline limiting member, thereby fixing the return pipeline 22 through the second pipeline limiting member, improving the stability of the installation of the return pipeline 22, and avoiding problems such as leakage.
[0035] In some embodiments, the return pipe 22 is snapped into place with the second pipe limiting member, thereby facilitating quick assembly and disassembly of the return pipe 22 and improving the convenience of assembly and subsequent maintenance of the return pipe 22. For example, the second pipe limiting member is a pipe clip.
[0036] In some embodiments, the second pipeline limiting member is provided on the column 13, thereby eliminating the need for a separate installation structure for the second pipeline limiting member, which helps to simplify the structure of the energy storage container and improve the space utilization rate of the energy storage container.
[0037] In some embodiments, the energy storage container further includes at least one energy storage unit 4, which includes a high-voltage box 42 and at least one battery pack 41. All battery packs 41 in the same energy storage unit 4 are electrically connected to the high-voltage box 42. The battery packs 41 are located within the battery compartment 111; the high-voltage box 42 is located within the electrical compartment 112. It should be noted that the high-voltage box 42 also generates a large amount of heat when the energy storage container is in operation. The above-mentioned arrangement avoids heat concentration and improves the heat dissipation effect of the energy storage container.
[0038] Specifically, in the same energy storage unit 4, all battery packs 41 are connected in series to form a battery cluster, that is, the battery clusters are arranged in a one-to-one correspondence with the high-voltage box 42. It should be noted that this embodiment does not limit the arrangement of the battery packs 41 in the same battery cluster. For example, in the same battery cluster, all battery packs 41 can be arranged at intervals in the vertical direction; specifically, as long as there is a certain gap between two adjacent battery packs 41 to avoid the battery packs 41 squeezing each other.
[0039] It is understandable that the energy storage unit 4 includes a battery cluster and a high-voltage box 42. By setting up multiple energy storage units 4, the energy storage capacity of the energy storage container can be increased.
[0040] In some embodiments, the energy storage container also includes an electrical control cabinet, and all high-voltage boxes 42 are electrically connected to the electrical control cabinet; the electrical compartment 112 is provided with a second partition 14, which divides the electrical compartment 112 into a first chamber 1121 and a second chamber 1122. The high-voltage boxes 42 are located in the first chamber 1121, and the electrical control cabinet is located in the second chamber 1122, thereby avoiding mutual interference between the high-voltage boxes 42 and the electrical control cabinet and avoiding heat concentration, so as to further improve the heat dissipation effect of the energy storage container.
[0041] In some embodiments, the battery compartment 111 is located on one side of the electrical compartment 112 along a first direction; the first direction is the length direction of the container body 1; the second chamber 1122 is located on one side of the first chamber 1121 along a second direction; the first direction, the second direction, and the vertical direction are perpendicular to each other. It should be noted that the accommodating cavity 11 is the largest along the length direction of the container body 1. By placing the battery compartment 111 on one side of the electrical compartment 112 along the first direction, both the battery compartment 111 and the electrical compartment 112 have a larger space, which facilitates the installation of the battery pack 41 and electrical components. Since the high-voltage box 42 and the electrical control cabinet are smaller in size compared to the battery cluster, placing the second chamber 1122 on one side of the first chamber 1121 along the second direction not only meets the installation requirements of the high-voltage box 42 and the electrical control cabinet but also helps to reduce the volume of the energy storage container.
[0042] Specifically, container body 1 has a cuboid structure, meaning that the length, width, and height directions of container body 1 are all perpendicular to each other, with the height direction being the vertical direction; the length of container body 1 is greater than its width. Specifically, the second direction is the width direction of container body 1.
[0043] In some embodiments, the cooling component 3 includes a first cold plate 31 and a second cold plate 32. The first cold plate 31 is located at the bottom of the battery compartment 111 and is connected to the refrigeration component. The second cold plate 32 is located at the bottom of the electrical compartment 112 and is also connected to the refrigeration component. Thus, the battery compartment 111 is cooled by the first cold plate 31, and the electrical compartment 112 is cooled by the second cold plate 32. In other words, the battery compartment 111 and the electrical compartment 112 are each equipped with independent cold plates, which helps to improve the cooling effect. It should be noted that the bottom of the energy storage container is a weak area for heat dissipation. By placing the first cold plate 31 at the bottom of the battery compartment 111 and the second cold plate 32 at the bottom of the electrical compartment 112, the heat dissipation effect in this weak area of the energy storage container can be improved.
[0044] In some embodiments, multiple first cold plates 31 are provided, and the multiple first cold plates 31 are arranged in a horizontal direction. Since multiple battery packs 41 are usually installed in the battery compartment 111, that is, the space of the battery compartment 111 is relatively large, by providing multiple first cold plates 31 in the battery compartment 111 and arranging the multiple first cold plates 31 in a horizontal direction, the heat dissipation efficiency of the battery compartment 111 can be improved, and the temperature inside the battery compartment 111 can be guaranteed to meet the requirements.
[0045] In some embodiments, the battery compartment 111 is provided with a first air blower, which is configured to blow air onto the first cold plate 31, thereby promoting heat exchange between the first cold plate 31 and the air and battery pack 41 in the battery compartment 111, and improving the cooling effect of the first cold plate 31 on the battery compartment 111.
[0046] Specifically, multiple columns 13 are provided, including a first column 13 for supporting the battery pack 41. Exemplarily, the first column 13 has a first support portion corresponding to the battery pack 41, and the battery pack 41 is installed on the corresponding first support portion. Exemplarily, the upper and lower ends of the first column 13 are connected to the top and bottom walls of the battery compartment 111, respectively. Supporting the battery pack 41 with the first column 13 improves the installation stability of the battery pack 41 and prevents it from being excessively compressed, thus improving the safety and performance of the battery pack 41.
[0047] Furthermore, the plurality of columns 13 also include a second column 13 for supporting the high-voltage box 42. Exemplarily, the second column 13 has a second support portion corresponding to the electrical components, and the electrical components are installed on the corresponding second support portion. Exemplarily, the upper and lower ends of the second column 13 are connected to the top and bottom walls of the electrical compartment 112, respectively. Supporting the high-voltage box 42 and other electrical components with the second column 13 improves the installation stability of the high-voltage box 42 and other electrical components, and prevents the high-voltage box 42 from being excessively compressed, thus improving the safety and performance of the high-voltage box 42.
[0048] In some embodiments, the first air blowing component is disposed on the first column 13, thereby eliminating the need for a separate installation structure for the first air blowing component, which helps to simplify the structure of the energy storage container and improve the space utilization rate of the energy storage container.
[0049] In some embodiments, the electrical compartment 112 is provided with a second air blower, which is configured to blow air onto the second cold plate 32, thereby promoting heat exchange between the second cold plate 32 and the air and electrical components in the electrical compartment 112, and improving the cooling effect of the second cold plate 32 on the electrical compartment 112.
[0050] In some embodiments, the second air blowing component is disposed on the second column 13, thereby eliminating the need for a separate installation structure for the second air blowing component, which helps to simplify the structure of the energy storage container and improve the space utilization rate of the energy storage container.
[0051] In some embodiments, when at least two refrigeration mechanisms 2 are provided, the at least two refrigeration mechanisms 2 are arranged along a first direction; the first direction is the length direction of the container body 1. By arranging at least two refrigeration mechanisms 2 along the length direction of the container body 1, the arrangement space of the refrigeration mechanisms 2 can be increased, thereby making the interval between two adjacent refrigeration mechanisms 2 large enough to improve the heat dissipation effect of the refrigeration mechanisms 2.
[0052] In some embodiments, the refrigeration mechanism 2 further includes a heat dissipation blower for blowing air onto the refrigeration component, the heat dissipation blower being disposed on the top of the refrigeration component.
[0053] In some embodiments, the heat dissipation blower includes an air inlet and an air outlet; further, the heat dissipation blower has an air inlet on at least one side along the second direction. It should be noted that when there are at least two refrigeration mechanisms 2, and the at least two refrigeration mechanisms 2 are arranged along the first direction, that is, the heat dissipation blowers of the at least two refrigeration mechanisms 2 are also arranged along the first direction, by setting the air inlet on one side of the heat dissipation blower along the second direction, it is possible to avoid the air inlet being blocked by other structures of the energy storage container, which is beneficial to improving the heat dissipation efficiency of the refrigeration mechanism.
[0054] For example, the heat dissipation blower has air inlets on both sides along the second direction, thereby increasing the air intake of the heat dissipation blower and improving its heat dissipation efficiency for the cooling component. Alternatively, the heat dissipation blower may have an air inlet on one side along the second direction.
[0055] In some embodiments, the top of the heat dissipation blower is provided with an air outlet, which can prevent the heat dissipation blower from blowing directly on the user and can also prevent the air outlet from being blocked by other structures of the energy storage container, which helps to reduce noise.
[0056] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.
Claims
1. Energy storage container, characterized in that include: The container body (1) includes a receiving cavity (11) and a first partition (12) disposed in the receiving cavity (11), the first partition (12) dividing the receiving cavity (11) into a battery compartment (111) and an electrical compartment (112); A refrigeration mechanism (2) is located on the top of the outside of the container body (1); the refrigeration mechanism (2) includes a refrigeration component; Cooling component (3) is connected to the refrigeration component. Part of the cooling component (3) is located in the battery compartment (111), and another part of the cooling component (3) is located in the electrical compartment (112).
2. The energy storage container of claim 1, wherein, The refrigeration mechanism (2) further includes an output pipe (21), one end of which is connected to the refrigeration component and the other end of which is connected to the cooling component (3); a first pipe limiting component is provided in the receiving cavity (11), and the output pipe (21) is connected to the first pipe limiting component.
3. The energy storage container of claim 2, wherein, The output pipe (21) is engaged with the first pipe limiting component.
4. The energy storage container of claim 3, wherein, The cavity (11) is provided with a column (13) for installing a battery pack (41) or electrical components; the first pipeline limiting member is provided on the column (13).
5. The energy storage container of claim 1, wherein, The refrigeration mechanism (2) further includes a return pipe (22), one end of which is connected to the refrigeration component and the other end of which is connected to the cooling component (3); a second pipe limiting component is provided in the receiving cavity (11), and the return pipe (22) is connected to the second pipe limiting component.
6. The energy storage container of claim 5, wherein, The return pipe (22) is engaged with the second pipe limiting component.
7. The energy storage container according to claim 6, characterized in that, The cavity (11) is provided with a column (13) for installing a battery pack (41) or electrical components; the second pipeline limiting member is provided on the column (13).
8. The energy storage container according to claim 1, characterized in that, The refrigeration component contains a refrigerant, which can circulate between the cooling component (3) and the refrigeration component.
9. The energy storage container according to claim 1, characterized in that, The cooling component (3) includes: A first cold plate (31) is disposed at the bottom of the battery compartment (111); the first cold plate (31) is connected to the cooling component; The second cold plate (32) is located at the bottom of the electrical compartment (112); the second cold plate (32) is connected to the refrigeration component.
10. The energy storage container according to claim 9, characterized in that, The first cold plate (31) is provided in multiple ways, and the multiple first cold plates (31) are arranged in a horizontal direction.
11. The energy storage container according to claim 9, characterized in that, The battery compartment (111) is provided with a first air blower, which is configured to blow air onto the first cold plate (31).
12. The energy storage container according to claim 11, characterized in that, The battery compartment (111) is provided with a first column (13) for installing the battery pack (41); the first blower is located on the first column (13).
13. The energy storage container according to claim 9, characterized in that, The electrical compartment (112) is provided with a second air blower, which is configured to blow air onto the second cold plate (32).
14. The energy storage container according to claim 13, characterized in that, The electrical compartment (112) is provided with a second column (13) for installing electrical components; the second blower is located on the second column (13).
15. The energy storage container according to any one of claims 1-14, characterized in that, When there are at least two refrigeration mechanisms (2), the at least two refrigeration mechanisms (2) are arranged along a first direction; the first direction is the length direction of the container body (1).
16. The energy storage container according to claim 15, characterized in that, The refrigeration mechanism (2) further includes a heat dissipation blower for blowing air onto the refrigeration component, the heat dissipation blower being disposed on the top of the refrigeration component.
17. The energy storage container according to claim 16, characterized in that, The heat dissipation blower includes an air inlet and an air outlet; The heat dissipation blower has the air inlet on at least one side along the second direction; the first direction, the second direction, and the vertical direction are perpendicular to each other; And / or, the top of the heat dissipation blower is provided with the air outlet.
18. The energy storage container according to any one of claims 1-14, characterized in that, The energy storage container also includes at least one energy storage unit (4), the energy storage unit (4) includes a high voltage box (42) and at least one battery pack (41), and in the same energy storage unit (4), all the battery packs (41) are electrically connected to the high voltage box (42); The battery pack (41) is located inside the battery compartment (111); The high-voltage box (42) is located inside the electrical compartment (112).
19. The energy storage container according to claim 18, characterized in that, The energy storage container also includes an electrical control cabinet, and all the high-voltage boxes (42) are electrically connected to the electrical control cabinet; The electrical compartment (112) is provided with a second partition (14), which divides the electrical compartment (112) into a first chamber (1121) and a second chamber (1122). The high-voltage box (42) is located in the first chamber (1121), and the electrical control cabinet is located in the second chamber (1122).
20. The energy storage container according to claim 19, characterized in that, The battery compartment (111) is located on one side of the electrical compartment (112) along a first direction; the first direction is the length direction of the container body (1); The second chamber (1122) is located on one side of the first chamber (1121) along the second direction; the first direction, the second direction and the vertical direction are perpendicular to each other.