Energy Storage Container

Abstract

An embodiment of the present application provides an energy storage container that can achieve both heat retention and safety. The energy storage container includes a battery chamber (110) that accommodates a plurality of batteries (10), and an exhaust passage (120) that is installed between each battery (10) among the plurality of batteries (10) and a chamber wall (111) of the battery chamber (110), the exhaust passage (120) is used to exhaust gas generated inside the battery (10) to the outside of the battery chamber (110), an internal space of the exhaust passage (120) and an internal space of the battery chamber (110) are isolated from each other, and a heat retention member (130) is provided on the chamber wall (111) of the battery chamber (110) and / or the exhaust passage (120), and the heat retention member (130) is used to maintain the heat of the internal space of the battery chamber (110).

Description

[Technical Field]

[0001] [CROSS-REFERENCE TO RELATED APPLICATIONS] This application claims priority to a Chinese patent application entitled "Energy Storage Container," application number 202220093869.5, filed on January 14, 2022, the entire contents of which are incorporated herein by reference.

[0002] FIELD OF THE INVENTION Embodiments of the present application relate to the field of energy storage, and in particular to energy storage containers. [Background technology]

[0003] As the influence of supporting the development of new energy technologies increases worldwide, various technologies related to energy storage have important research significance, and among them, container-based energy storage methods have been widely applied. In order to ensure the performance of batteries stored in energy storage containers, the thermal insulation and safety design of the energy storage containers is extremely important.

[0004] In light of this, how to balance the heat retention and safety of energy storage containers is a technical issue that needs to be resolved as soon as possible. Summary of the Invention

[0005] The present application provides an energy storage container that can achieve both heat retention and safety.

[0006] According to a first aspect, there is provided an energy storage container including a battery chamber that houses a plurality of batteries, and an exhaust flow path installed between each of the plurality of batteries and a chamber wall of the battery chamber, wherein the exhaust flow path is used to discharge gas generated inside the batteries to the outside of the battery chamber, the internal space of the exhaust flow path and the internal space of the battery chamber are isolated from each other, and a heat-insulating member is provided on the chamber wall of the battery chamber and / or the exhaust flow path, and the heat-insulating member is used to keep the internal space of the battery chamber warm.

[0007] According to the technical solution of the embodiment of the present application, in the battery compartment of the energy storage container, exhaust channels are installed between each battery and the compartment wall of the battery compartment, and the exhaust channels exhaust high-temperature and high-pressure substances such as gas generated inside the battery to the outside of the battery compartment, preventing the high-temperature and high-pressure substances from affecting other components in the battery compartment and ensuring the safety performance of the battery compartment. In addition, heat-insulating members are installed on the compartment wall and / or the exhaust channels of the battery compartment, which can keep the internal space of the battery compartment warm, thereby ensuring the performance of the batteries in the battery compartment.

[0008] In some possible embodiments, the exhaust flow path includes a first exhaust flow path section and a second exhaust flow path section, the plurality of batteries are connected to the plurality of first exhaust flow path sections in a one-to-one correspondence, the plurality of first exhaust flow path sections are connected to at least one second exhaust flow path section, and the at least one second exhaust flow path section is connected to the chamber wall of the battery chamber.

[0009] According to the technical solution of this embodiment, the exhaust flow path includes two exhaust flow path sections, and the multiple first exhaust flow path sections corresponding to the multiple batteries are connected to at least one second exhaust flow path section, and the number of the second exhaust flow path sections is small, which can avoid the multiple exhaust flow paths being connected to the chamber wall of the battery chamber and affecting the thermal insulation performance of the battery chamber.

[0010] In some possible embodiments, the plurality of batteries are connected to the plurality of exhaust passages in a one-to-one correspondence, and the plurality of exhaust passages are all connected to the chamber wall of the battery chamber.

[0011] According to the technical solution of this embodiment, the size of the exhaust passage corresponding to each battery can be the same, which facilitates standardized production and manufacturing of the exhaust passage, and the exhaust passage can be easily installed between the battery and the chamber wall of the battery chamber, thereby improving the production efficiency of the energy storage container.

[0012] In some possible embodiments, a weakened area is provided in the chamber wall of the battery chamber, the exhaust flow path is connected to the battery and the weakened area, the thickness of the weakened area is smaller than the thickness of other areas of the chamber wall, and the weakened area is used to rupture and release the gas pressure when the gas pressure in the exhaust flow path exceeds a threshold value.

[0013] The technical solution of this embodiment provides a weakened area on the wall of the battery chamber, which is simple to implement and can achieve the effect of reducing pressure. Compared with the technical solution of designing the area where the weakened area is located as a through-hole, the weakened area can isolate the exhaust passage from the external environment, which can reduce the impact of temperature changes in the external environment on the internal temperature of the exhaust passage to a certain extent, and is advantageous in improving the heat retention performance of the battery chamber.

[0014] In some possible embodiments, a first pressure reducing mechanism is installed on the chamber wall of the battery chamber, an exhaust flow path is connected to the battery and the first pressure reducing mechanism, and the first pressure reducing mechanism is used to operate and release the gas pressure in the exhaust flow path when the gas pressure in the exhaust flow path exceeds a threshold value.

[0015] According to the technical solution of this embodiment, the chamber wall of the battery chamber exhausts the battery exhaust through the first pressure reducing mechanism, which is highly reliable and can reliably ensure that the battery exhaust is exhausted to the outside of the battery chamber through the first pressure reducing mechanism, thereby ensuring the safety of the energy storage container. In addition, the first pressure reducing mechanism can isolate the exhaust flow path from the external environment, which is advantageous to improving the heat preservation performance of the battery chamber.

[0016] In some possible embodiments, a second pressure reducing mechanism is installed in the battery, and the second pressure reducing mechanism is activated to release the gas pressure inside the battery when the gas pressure inside the battery exceeds a threshold value, and the exhaust flow path is connected to the second pressure reducing mechanism and the chamber wall of the battery chamber.

[0017] According to the technical solution of this embodiment, the exhaust passage is directly connected to the second pressure reducing mechanism of the battery and the chamber wall of the battery chamber, and all the exhaust gases discharged from the battery can be easily discharged through the exhaust passage. This method has a high efficiency in collecting the exhaust gases and other exhaust gases discharged from the battery, and can reliably ensure the safety of the energy storage container.

[0018] In some possible embodiments, the size of the exhaust flow passage in a first direction matches the size of the second pressure reducing mechanism in the first direction, the first direction being parallel to the radial direction of the exhaust flow passage.

[0019] According to the technical solution of this embodiment, the exhaust passage is reliably connected to the second pressure reducing mechanism of the battery, thereby further improving the collection efficiency of exhaust gases, such as gases, discharged from the battery through the exhaust passage, and further ensuring the safety of the energy storage container.

[0020] In some possible embodiments, the battery is provided with a mounting hole, and the first end of the exhaust channel is inserted into the mounting hole, thereby achieving connection between the exhaust channel and the battery.

[0021] The technical solution of this embodiment simplifies the installation method of the exhaust flow path, which can improve the overall manufacturing efficiency of the energy storage container.

[0022] In some possible embodiments, the second pressure reducing mechanism of the battery is installed in correspondence with the mounting hole facing the inside of the battery.

[0023] According to the technical solution of this embodiment, the exhaust passage in the mounting hole is installed corresponding to the second pressure reducing mechanism of the battery, so that most of the exhaust gas discharged from the battery can be discharged through the exhaust passage, thereby ensuring the safety of the energy storage container.

[0024] In some possible embodiments, the second end of the exhaust flow path has a first mounting portion with an annular structure, which is parallel to and abuts the chamber wall of the battery chamber, thereby realizing a connection between the exhaust flow path and the chamber wall of the battery chamber.

[0025] According to the technical solution of this embodiment, the second end of the exhaust passage has a first mounting part, the first mounting part has an annular structure, and the annular structure is installed parallel to the chamber wall of the battery chamber, and the exhaust passage is attached to the chamber wall via the first mounting part, which can increase the contact area between the exhaust passage and the chamber wall, thereby improving the attachment reliability of the exhaust passage to the chamber wall.

[0026] In some possible embodiments, the chamber wall of the battery chamber has a second mounting portion extending toward the inside of the battery chamber, and the second mounting portion is fitted to the inner wall or outer wall of the exhaust flow path, thereby realizing a connection between the exhaust flow path and the chamber wall of the battery chamber.

[0027] According to the technical solution of this embodiment, the exhaust passage and the second mounting part are fitted together, thereby realizing the interconnection between the exhaust passage and the chamber wall of the battery chamber. This method is easy to implement and the connection between the exhaust passage and the chamber wall is reliable, which is beneficial to improving the installation reliability of the exhaust passage in the battery chamber and improving the production efficiency of the energy storage container.

[0028] In some possible embodiments, a seal member is provided at at least one end of the exhaust passage, and the exhaust passage is connected to the battery and / or the chamber wall of the battery chamber via the seal member.

[0029] According to the technical solution of this embodiment, the exhaust passage is connected to the battery and / or the chamber wall of the battery chamber via a sealing member, thereby ensuring the tightness of the connection between the exhaust passage and the battery and / or the chamber wall of the battery chamber, and exhaust such as high-temperature and high-pressure gas discharged from the battery can be smoothly discharged to the outside of the battery chamber through the exhaust passage with excellent sealing properties, thereby ensuring the safety of the energy storage container.

[0030] In some possible embodiments, the sealing member is a gasket or a soft plastic.

[0031] In some possible embodiments, the heat-retaining material installed in the exhaust passage and / or the chamber wall of the battery chamber includes rock wool.

[0032] According to the technical solution of this embodiment, the heat-insulating member can be easily attached and installed on the chamber wall and / or the exhaust passage, and can provide good heat-insulating effect. [Brief explanation of the drawings]

[0033] In order to more clearly describe the technical solutions in the embodiments of the present application, the following briefly describes the drawings required for the embodiments of the present application. It should be understood that the drawings shown below are only some embodiments of the present application, and those skilled in the art can further obtain other drawings based on the drawings without any creative efforts.

[0034] [Figure 1] 1 is a schematic view of an external appearance of an energy storage container according to one embodiment of the present application. FIG. [Figure 2] 1 is a schematic structural diagram of an energy storage container according to an embodiment of the present application; [Figure 3] FIG. 2 is a schematic structural diagram of another energy storage container according to an embodiment of the present application. [Figure 4] FIG. 2 is a schematic structural diagram of another energy storage container according to an embodiment of the present application. [Figure 5] FIG. 2 is a schematic structural diagram of another energy storage container according to an embodiment of the present application. [Figure 6] FIG. 2 is a schematic structural diagram of another energy storage container according to an embodiment of the present application. [Figure 7] 1 is a schematic structural diagram showing an exhaust passage connected to a chamber wall of a battery chamber according to an embodiment of the present invention; [Figure 8] FIG. 10 is a schematic structural diagram showing an exhaust passage connected to a chamber wall of a battery chamber according to another embodiment of the present invention.

[0035] In the drawings, the drawings are not drawn to scale. DETAILED DESCRIPTION OF THE INVENTION

[0036] The embodiments of the present application will be described in more detail below with reference to the drawings and examples. The detailed description of the following examples and the drawings are used to exemplify the principles of the present application, but are not intended to limit the scope of the present application, and the present application is not limited to the described examples.

[0037] It should be noted that in the description of this application, unless otherwise specified, "multiple" means two or more, and the orientations or positional relationships indicated by terms such as "up," "down," "left," "right," "inside," and "outside" are merely for ease of explanation and simplification of the description, and do not indicate or imply that the subject devices or elements have a particular orientation or should be configured and operated in a particular orientation, and therefore should not be understood as limiting the application. Furthermore, terms such as "first," "second," and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. "Perpendicular" does not mean perpendicular in the strict sense, but is within a tolerance range. "Parallel" does not mean parallel in the strict sense, but is within a tolerance range.

[0038] Any directional expressions appearing in the following description refer to the directions shown in the drawings and do not limit the specific structure of the present application. It should be further explained that, unless otherwise clearly specified and limited, the terms "attached," "connected," and "connect" should be understood in a broad sense, and may refer to, for example, a fixed connection, a detachable connection, or an integral connection. They may be directly connected or indirectly connected via an intermediate medium. Those skilled in the art can understand the specific meanings of the above terms in the present application according to specific circumstances.

[0039] The term "and / or" in this application merely describes the relationship between related objects and indicates that three types of relationships can exist. For example, A and / or B can indicate three situations: A exists, A and B exist simultaneously, and B exists. Note that in this application, the symbol " / " generally indicates that the related objects before and after it are in an "or" relationship.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terms used in the specification of the present application are intended merely to describe specific embodiments and are not intended to limit the present application. The terms "comprise" and "have" and their equivalents in the specification and claims of the present application and the description of the drawings are intended to be non-exclusive. The terms "first," "second," etc. in the specification and claims of the present application or the drawings are used to distinguish between different objects and are not used to describe a particular order or hierarchy.

[0041] References to "embodiments" in this application mean that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. Appearances of the term "embodiment" in various places in this specification do not necessarily refer to the same embodiment, nor do they refer to embodiments that are mutually exclusive, independent, or alternative to other embodiments. Those skilled in the art will understand, both explicitly and implicitly, that embodiments described herein can be combined with other embodiments.

[0042] The energy storage container is a relatively highly integrated energy storage device, and specifically, the energy storage container may include a battery compartment in which assemblies such as multiple batteries, main control components, bus components, and thermal management components may be arranged.

[0043] A battery, also called a battery box, includes a housing and one or more battery cells packaged in the housing. Optionally, the battery cells may include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium batteries, sodium-ion batteries, or magnesium-ion batteries, etc., but the embodiments of the present application are not limited thereto. The battery cells may be cylindrical, flat, rectangular, or have other shapes, etc., but the embodiments of the present application are not limited thereto.

[0044] Optionally, the plurality of batteries disposed in the battery compartment may be connected in series, parallel, or series-parallel to each other. In some embodiments, the plurality of batteries may be connected to the main control member via a bus member, and electrical connection between the plurality of batteries is realized via the main control member.

[0045] In addition to the plurality of batteries, main control components, and bus components, the energy storage container further includes thermal management components, including but not limited to air conditioning assemblies, fan assemblies, water-cooled piping, etc., used to provide thermal management within the energy storage container and regulate the temperature within the energy storage container.

[0046] The battery casing has a certain level of sealing ability to prevent the external environment from affecting the battery cells contained therein. During operation, the internal chemical reactions of the battery cells cause changes in the internal pressure or temperature of the battery cells. To ensure the safety of the entire battery, the battery casing and the battery cells are provided with a pressure reduction mechanism.

[0047] The pressure reduction mechanism in the battery cell refers to an element or component that activates when the internal pressure or temperature of the battery cell reaches a predetermined threshold and releases the internal pressure or temperature. When the pressure reduction mechanism in the battery cell activates, high-temperature, high-pressure substances inside the battery cell are released into the housing via the pressure reduction mechanism in the battery cell. Furthermore, when the internal pressure or temperature of the housing reaches a predetermined threshold, the pressure reduction mechanism in the housing also activates, and the high-temperature, high-pressure substances from inside the battery cell are released into the battery chamber via the pressure reduction mechanism in the housing.

[0048] Although the above embodiment can ensure the safety of the battery to a certain extent, when the pressure reduction mechanism in the battery casing is activated, high-temperature and high-pressure substances from inside the battery enter the battery chamber in the energy storage container, posing a certain safety risk to the battery chamber.

[0049] Furthermore, the performance of a battery is closely related to the ambient temperature in which it is located. For example, if the ambient temperature is too high, the risk of battery failure or explosion increases, while if the ambient temperature is too low, the electrochemical reaction inside the battery is affected, resulting in a decrease in the normal operation and service life of the battery. Therefore, an energy storage container for storing batteries needs to have good thermal insulation performance to reduce the impact of changes in the external environment on the battery and ensure the performance of the battery.

[0050] In view of this, the present application provides an energy storage container, in which an exhaust passage is provided between each battery and the battery chamber wall in the battery chamber of the energy storage container, and the exhaust passage discharges high-temperature and high-pressure materials generated inside the batteries to the outside of the battery chamber, preventing the high-temperature and high-pressure materials from affecting other components in the battery chamber and ensuring the safety performance of the battery chamber. In addition, a heat-insulating member is provided on the battery chamber wall and / or the exhaust passage, and the heat-insulating member can keep the internal space of the battery chamber warm, thereby ensuring the performance of the batteries in the battery chamber.

[0051] The technical solutions described in the embodiments of the present application are applicable to various types and sizes of energy storage containers. For example, the energy storage container may be a 40-foot or 20-foot standard container, or a custom-sized specialized container. The batteries housed in the energy storage container include, but are not limited to, lithium batteries such as lithium iron phosphate batteries, lithium manganese oxide batteries, or lithium cobalt oxide batteries.

[0052] FIG. 1 shows a schematic diagram of an energy storage container 100 according to an embodiment of the present invention.

[0053] 1, the energy storage container 100 may be a regular rectangular parallelepiped structure, and the six sides of the rectangular parallelepiped are the six exterior walls of the energy storage container 100. By installing the energy storage container 100 as a rectangular parallelepiped structure, the energy storage container 100 can be easily fixed, positioned, and transported.

[0054] The inside of the energy storage container 100 is a hollow structure, and the hollow structure can include a battery compartment, which facilitates the installation of multiple batteries in the battery compartment. In addition to the battery compartment, the inside of the energy storage container 100 can be further divided into multiple functional compartments according to actual needs, and each functional compartment can be equipped with other functional device components, such as bus components, main control components, thermal management components, etc., that manage or assist the multiple batteries.

[0055] FIG. 2 shows a schematic structural diagram of an energy storage container 100 provided by another embodiment of the present application.

[0056] 2 , in an embodiment of the present application, the energy storage container 100 includes a battery chamber 110 that accommodates a plurality of batteries 10, and an exhaust passage 120 that is installed between each battery 10 and a chamber wall 111 of the battery chamber 110. The exhaust passage 120 is used to exhaust gas generated inside the battery 10 to the outside of the battery chamber 110, and the internal space of the exhaust passage 120 is isolated from the internal space of the battery chamber 110. In addition, a heat insulating member 130 is installed on the chamber wall 111 of the battery chamber 110 and / or the exhaust passage 120, and the heat insulating member 130 keeps the internal space of the battery chamber 110 warm.

[0057] 2, only the battery compartment 110 in the energy storage container 100 is shown schematically, and only a portion of the battery 10 in the energy storage container 100 is shown schematically. The energy storage container 100 may include other functional compartments in addition to the battery compartment 110, and the embodiment of the present application does not specifically limit the internal structure of the energy storage container 100.

[0058] Alternatively, the chamber wall 111 of the battery chamber 110 may be an outer wall of the energy storage container 100 that is in contact with the external environment in which the energy storage container 100 is located. Alternatively, the chamber wall 111 of the battery chamber 110 may be an inner wall of the energy storage container 100, for example, the chamber wall 111 may be a shared wall between the battery chamber 110 and other functional chambers in the energy storage container 100.

[0059] Specifically, if one of the batteries 10 housed in the battery compartment 110 explodes, the high-temperature and high-pressure substances generated inside will be released into the battery compartment 110, potentially affecting the other batteries 10 and other related electrical components in the battery compartment 110 and causing a more serious safety problem. Therefore, to prevent this from happening, an exhaust passage 120 is installed between each battery 10 in the battery compartment 110 and the compartment wall 111 of the battery compartment 110, so that if one of the batteries 10 in the battery compartment 110 explodes, all of the high-temperature and high-pressure substances generated inside will be released to the outside of the battery compartment 110 through the exhaust passage 120, thereby ensuring the safety of the battery compartment 110.

[0060] Alternatively, the flow path walls of the exhaust flow path 120 may be made of a rigid or flexible material, as long as they can withstand the impact and temperature of the high-temperature and high-pressure material released from the battery 10, and the embodiments of the present application are not limited to the specific implementation of the flow path walls of the exhaust flow path 120.

[0061] The high-temperature and high-pressure substances released from the battery 10 include, but are not limited to, electrolyte, dissolved or fragmented solid fragments, high-temperature and high-pressure gas produced by a reaction, flames, etc.

[0062] Alternatively, as shown in FIG. 2, the exhaust flow path 120 may be a straight flow path, and its axial size may be the linear distance from the battery 10 to the chamber wall 111 of the battery chamber 110, so that substances released from the battery 10 can quickly pass through the exhaust flow path 120 and reach the chamber wall 111 of the battery chamber 110.

[0063] Alternatively, in other embodiments, depending on the arrangement of related components in the battery chamber 110, the exhaust passage 120 may connect the battery 10 and the chamber wall 111 of the battery chamber 110 in a polygonal or curved line. The embodiments of the present application do not limit the specific shape of the exhaust passage 120.

[0064] In addition, since the internal space of the exhaust passage 120 and the internal space of the battery chamber 110 are isolated from each other, in order to prevent temperature changes in the internal space of the exhaust passage 120 from affecting the performance of the battery 10 in the battery chamber 110, a heat-insulating member 130 may be provided in the exhaust passage 120, as shown in FIG. 2, thereby further isolating the internal space of the exhaust passage 120 from the internal space of the battery chamber 110 and keeping the internal space of the battery chamber 110 warm, thereby ensuring the performance of the battery 10 housed in the battery chamber 110.

[0065] Furthermore, a heat insulating member 130 may also be provided on the chamber wall 111 of the battery chamber 110, and the heat insulating member 130 provided on the chamber wall 111 similarly keeps the internal space of the battery chamber 110 warm, thereby ensuring the performance of the battery 10 housed in the battery chamber 110.

[0066] Optionally, in the embodiment of the present application, the thermal insulation material 130 may include, but is not limited to, rock wool, which is easy to attach and install to the chamber wall 111 and / or the exhaust passage 120 and can provide good thermal insulation effect.

[0067] As described above, according to the technical solutions of the embodiments of the present application, in the battery compartment 110 of the energy storage container 100, exhaust channels 120 are installed between each battery 10 and the compartment wall 111 of the battery compartment 110, and the exhaust channels 120 exhaust high-temperature and high-pressure substances, such as gases, generated inside the batteries 10 to the outside of the battery compartment 110, thereby preventing the high-temperature and high-pressure substances from affecting other components in the battery compartment 110 and ensuring the safety performance of the battery compartment 110. In addition, a heat-insulating member 130 is installed on the compartment wall 111 of the battery compartment 110 and / or the exhaust channels 120, and the heat-insulating member 130 can keep the internal space of the battery compartment 110 warm, thereby ensuring the performance of the batteries 10 in the battery compartment 110.

[0068] Optionally, in some embodiments, as shown in FIG. 2, multiple batteries 10 are connected to multiple exhaust flow paths 120 in a one-to-one correspondence, and the multiple exhaust flow paths 120 are all connected to the chamber wall 111 of the battery chamber 110.

[0069] Specifically, in this embodiment, the number of exhaust flow paths 120 is the same as the number of batteries 10, and the multiple exhaust flow paths 120 corresponding to the batteries 10 are installed separately, and the exhaust flow paths 120 corresponding to different batteries 10 do not communicate with each other.

[0070] In this embodiment, the size of the exhaust passage 120 corresponding to each battery 10 may be the same, which facilitates standardized production and manufacturing of the exhaust passage 120 and allows the exhaust passage 120 to be easily installed between the battery 10 and the chamber wall 111 of the battery chamber 110, thereby improving the production efficiency of the energy storage container 100.

[0071] FIG. 3 shows a schematic structural diagram of an energy storage container 100 provided by another embodiment of the present application.

[0072] As shown in FIG. 3 , in an embodiment of the present application, the exhaust flow path 120 includes a first exhaust flow path section 121 and a second exhaust flow path section 122, the plurality of batteries 10 are connected to the plurality of first exhaust flow path sections 121 in a one-to-one correspondence, the plurality of first exhaust flow path sections 121 are connected to at least one second exhaust flow path section 122, and the at least one second exhaust flow path section 122 is connected to the chamber wall 111 of the battery chamber 110.

[0073] Specifically, in the embodiment of the present application, the exhaust flow paths 120 corresponding to different batteries 10 communicate with each other. The number of first exhaust flow path sections 121 connected to the multiple batteries 10 is the same as the number of batteries 10. The number of second exhaust flow path sections 122 connected to the multiple first exhaust flow path sections 121 is less than the number of batteries 10.

[0074] By way of example and not limitation, as shown in FIG. 3, the number of second exhaust flow passage sections 122 is one.

[0075] 3, the first exhaust flow passage section 121 and the second exhaust flow passage section 122 can both be considered to be straight exhaust flow passage sections, and the axial directions of the first exhaust flow passage section 121 and the second exhaust flow passage section 122 are both perpendicular to the chamber wall 111 of the battery chamber 110. The multiple first exhaust flow passage sections 121 are connected to the second exhaust flow passage section 122 via the third exhaust flow passage section 123, thereby realizing a complete exhaust flow passage 120 from the battery 10 to the chamber wall 111. The third exhaust flow passage section 123 can also be considered to be a straight exhaust flow passage section, and the axial direction of the third exhaust flow passage section 123 is parallel to the chamber wall 111 of the battery chamber 110.

[0076] It should be noted that Figure 3 is not limiting but merely shows the shape and connection method of the first exhaust flow path portion 121 and the second exhaust flow path portion 122 provided by the embodiments of the present application as an example. As shown in Figure 3, the first exhaust flow path portion 121 and the second exhaust flow path portion 122 are both linear flow path portions, and in addition to the first exhaust flow path portion 121 being connected to the second exhaust flow path portion 122 via the third exhaust flow path portion 123, the first exhaust flow path portion 121 may also be directly connected to the second exhaust flow path portion 122, and the first exhaust flow path portion 121 and the second exhaust flow path portion 122 may be flow path portions exhibiting a curved or broken line. The embodiments of the present application do not specifically limit the shape and connection method of the first exhaust flow path portion 121 and the second exhaust flow path portion 122.

[0077] 3, the first exhaust flow path portion 121 is perpendicular to the wall of the battery 10 to which it is connected, and therefore, exhaust from inside the battery 10 is quickly discharged through the first exhaust flow path portion 121. In addition, the first exhaust flow path portion 121 and the second exhaust flow path portion 122 can be easily connected via the perpendicular third exhaust flow path portion 123, which makes the overall design of the exhaust flow path 120 regular and facilitates installation of the exhaust flow path 120 in the battery chamber 110.

[0078] According to the technical solution of the embodiment of the present application, the exhaust flow path 120 includes two exhaust flow path sections, and the multiple first exhaust flow path sections 121 corresponding to the multiple batteries 10 are connected to at least one second exhaust flow path section 122, and the number of the second exhaust flow path sections 122 is small, so that the multiple exhaust flow paths 120 can be avoided from being connected to the chamber wall 111 of the battery chamber 110, which would affect the thermal insulation performance of the battery chamber 110.

[0079] 3, since the second exhaust passage section 122 is connected to the chamber wall 111, the second exhaust passage section 122 is easily affected by the external environment, whereas the first exhaust passage section 121 is installed away from the chamber wall 111 and is therefore less affected by the external environment. Therefore, in the embodiment shown in FIG. 3, the heat insulating member 130 may not be provided on the first exhaust passage section 121 but may be provided only on the second exhaust passage section 122.

[0080] Alternatively, in another embodiment, the heat insulating member 130 may completely cover all the exhaust passage portions of the exhaust passage 120, that is, the first exhaust passage portion 121, the second exhaust passage portion 122, and the third exhaust passage portion 123.

[0081] Based on the embodiment shown in FIG. 2, FIG. 4 shows a schematic structural diagram of an energy storage container 100 provided by another embodiment of the present application.

[0082] As shown in FIG. 4, in an embodiment of the present application, a weak area 112 is provided in the chamber wall 111 of the battery chamber 110, an exhaust passage 120 is connected to the battery 10 and the weak area 112, the thickness of the weak area 112 is smaller than the thickness of other areas of the chamber wall 111, and the weak area 112 is used to burst and release the gas pressure when the gas pressure in the exhaust passage 120 exceeds a threshold.

[0083] Alternatively, the material of the weakened area 112 may be different from the material of the chamber wall 111, for example, the material strength of the weakened area 112 may be less than the material strength of the chamber wall 111, such that the weakened area 112 is more likely to rupture under pressure than the chamber wall 111. Alternatively, the thickness of the weakened area 112 may be less than the thickness of the chamber wall 111, such that the weakened area 112 is more likely to rupture under pressure than the chamber wall 111.

[0084] Alternatively, the weakened area 112 may have various shapes such as a recess, a shallow groove, etc., which are easy to implement and can achieve the effect of reducing pressure. Compared with the technical solution of designing the area where the weakened area 112 is located as a through-hole, the weakened area 112 can isolate the exhaust channel 120 from the external environment, which can reduce the impact of temperature changes in the external environment on the internal temperature of the exhaust channel 120 to a certain extent, and is advantageous in improving the thermal insulation performance of the battery chamber 110.

[0085] Based on the embodiment shown in FIG. 3, FIG. 5 shows a schematic structural diagram of an energy storage container 100 provided by another embodiment of the present application.

[0086] As shown in FIG. 5, in an embodiment of the present application, a first pressure reducing mechanism 113 is installed on the chamber wall 111 of the battery chamber 110, and the exhaust passage 120 is connected to the battery 10 and the first pressure reducing mechanism 113. The first pressure reducing mechanism 113 is activated when the gas pressure in the exhaust passage 120 exceeds a threshold value to release the gas pressure in the exhaust passage 120.

[0087] Specifically, in the embodiment of the present application, the first pressure reducing mechanism 113 may be a pressure-sensitive member having a preset operating pressure threshold, and may be activated to release the gas pressure in the exhaust passage 120 when the gas pressure in the exhaust passage 120 exceeds the preset operating pressure threshold. For example, the first pressure reducing mechanism 113 may be an explosion-proof pressure reducing member such as an explosion-proof valve, an explosion-proof plate, or an explosion-proof sheet.

[0088] According to the technical solution of this embodiment, the exhaust gas from the battery 10 is discharged through the first pressure reducing mechanism 113, which is highly reliable and can reliably ensure that the exhaust gas from the battery 10 is discharged to the outside of the battery compartment 110 through the first pressure reducing mechanism 113, thereby ensuring the safety of the energy storage container 100. In addition, the first pressure reducing mechanism 113 can isolate the exhaust passage 120 from the external environment of the battery compartment 110, which is advantageous to improving the thermal insulation performance of the battery compartment 110. Based on this, when multiple batteries 10 in the battery compartment 110 are connected to the compartment wall 111 of the battery compartment 110 through a small number of second exhaust passage sections 122, the number of first pressure reducing mechanisms 113 connected to the second exhaust passage sections 122 can also be reduced, which can reduce the overall manufacturing cost of the energy storage container 100.

[0089] In the example shown in Figure 5, the first pressure reduction mechanism 113 is installed at one end of the second exhaust flow path section 122 in the embodiment shown in Figure 3, but in addition to the method shown in this example, the first pressure reduction mechanism 113 may also be installed at one end of each exhaust flow path 120 in the embodiment shown in Figure 2.

[0090] Similarly, in the example shown in Figure 4, the weakened area 112 is provided at one end of each exhaust flow path 120 in the embodiment shown in Figure 2, but in addition to the method shown in that example, the weakened area 112 may also be provided at one end of the second exhaust flow path section 122 in the embodiment shown in Figure 3.

[0091] FIG. 6 shows a schematic structural diagram of an energy storage container 100 provided by another embodiment of the present application.

[0092] As shown in FIG. 6 , in an embodiment of the present application, a second pressure reduction mechanism 101 is installed in the battery 10, and the second pressure reduction mechanism 101 is activated to release the gas pressure inside the battery 10 when the gas pressure inside the battery 10 exceeds a threshold value, and an exhaust flow path 120 is connected to the second pressure reduction mechanism 101 and the chamber wall 111 of the battery chamber 110.

[0093] Specifically, in the embodiments of the present application, the second pressure reduction mechanism 101 installed in the battery 10 is a pressure reduction mechanism in the housing of the battery 10, and the second pressure reduction mechanism 101 may be a pressure-sensitive member such as an explosion-proof valve, an explosion-proof plate, or an explosion-proof sheet.

[0094] If at least one battery cell inside the battery 10 explodes and releases emissions such as high-temperature and high-pressure gas, the emissions will be discharged through the second pressure reduction mechanism 101, and the exhaust flow path 120 is directly connected to the second pressure reduction mechanism 101 in the battery 10, so that all emissions discharged from the battery 10 can be easily discharged through the exhaust flow path 120. This method has a high efficiency in collecting emissions such as gas discharged from the battery 10 and can reliably ensure the safety of the energy storage container 100.

[0095] Optionally, to ensure the connection effect between the exhaust flow path 120 and the second pressure reducing mechanism 101, the size of the exhaust flow path 120 in a first direction is matched to the size of the second pressure reducing mechanism 101 in the first direction, and the first direction is a direction parallel to the radial direction of the exhaust flow path 120.

[0096] According to the technical solution of this embodiment, the exhaust passage 120 is securely connected to the second pressure reducing mechanism 101 of the battery 10, thereby further improving the collection efficiency of exhaust gases and other emissions discharged from the battery 10 through the exhaust passage 120 and further ensuring the safety of the energy storage container 100.

[0097] In order to realize the connection between the exhaust flow path 120 and the battery 10, in addition to the exhaust flow path 120 being connected to the second pressure reducing mechanism 101 of the battery 10, optionally, in another embodiment, a mounting hole is provided in the battery 10, and the first end of the exhaust flow path 120 is inserted into the mounting hole, thereby realizing the connection between the exhaust flow path 120 and the battery 10.

[0098] Specifically, in this embodiment, a mounting hole is provided on the housing of the battery 10, and the size of the mounting hole can be matched with the radial size of the exhaust channel 120, thereby facilitating the insertion of the exhaust channel 120. The technical solution of this embodiment simplifies the installation method of the exhaust channel 120 and can improve the overall manufacturing efficiency of the energy storage container 100.

[0099] Based on this, in order to facilitate improving the collection efficiency of emissions such as gases discharged from the battery 10 through the exhaust passage 120, the second pressure reducing mechanism 101 of the battery 10 may be installed corresponding to the mounting hole facing the inside of the battery 10. In this situation, the exhaust passage 120 in the mounting hole is installed corresponding to the second pressure reducing mechanism 101 of the battery 10, and most of the emissions discharged from the battery 10 can be discharged through the exhaust passage 120, thereby ensuring the safety of the energy storage container 100.

[0100] FIG. 7 is a schematic structural diagram of an embodiment of the present invention in which an exhaust passage 120 is connected to a chamber wall 111 of a battery chamber 110. As shown in FIG.

[0101] As shown in FIG. 7, in the embodiment of the present application, the second end of the exhaust flow path 120 has a first mounting portion 124 of an annular structure, which is parallel to and abuts the chamber wall 111 of the battery chamber 110, thereby realizing a connection between the exhaust flow path 120 and the chamber wall 111 of the battery chamber 110.

[0102] 7, a first end of the exhaust flow path 120 is connected to the second pressure reducing mechanism 101 of the battery 10, and a second end of the exhaust flow path 120 abuts against the chamber wall 111 of the battery chamber 110. Alternatively, as an alternative embodiment, the first end of the exhaust flow path 120 may be inserted into a mounting hole in the housing of the battery 10.

[0103] 7, for example, a weakened area 112 may be provided in the chamber wall 111, and the second end of the exhaust channel 120 may face the weakened area 112. Or, as an alternative embodiment, a first pressure reducing mechanism 113 may be provided in the chamber wall 111, and the second end of the exhaust channel 120 may be connected to the first pressure reducing mechanism 113. Or, in yet another alternative embodiment, a through hole may be further provided in the chamber wall 111, and the second end of the exhaust channel 120 may face the through hole.

[0104] 7, the second end of the exhaust passage 120 has a first mounting portion 124, which has an annular structure and is disposed parallel to the chamber wall 111 of the battery chamber 110. The exhaust passage 120 is attached to the chamber wall 111 via the first mounting portion 124, which increases the contact area between the exhaust passage 120 and the chamber wall 111 and thereby improves the reliability of the attachment of the exhaust passage 120 to the chamber wall 111.

[0105] Alternatively, after the first mounting portion 124 is attached to the chamber wall 111, the two may be securely connected to each other via various connection means in the related art, for example, by a welding process or by mechanical structural members such as bolts, and the embodiments of the present application do not limit the specific connection method between the first mounting portion 124 and the chamber wall 111.

[0106] FIG. 8 shows a schematic structural diagram of an exhaust passage 120 connected to the chamber wall 111 of the battery chamber 110 provided in another embodiment of the present invention.

[0107] As shown in FIG. 8, the chamber wall 111 of the battery chamber 110 has a second mounting portion 114 extending toward the inside of the battery chamber 110, and the second mounting portion 114 is fitted into the inner wall or outer wall of the exhaust passage 120, thereby realizing a connection between the exhaust passage 120 and the chamber wall 111 of the battery chamber 110.

[0108] 8 , a first end of the exhaust flow path 120 is connected to the second pressure reducing mechanism 101 of the battery 10, and a second end of the exhaust flow path 120 is fitted to the second mounting portion 114. Alternatively, as an alternative embodiment, the first end of the exhaust flow path 120 may be inserted into a mounting hole in the housing of the battery 10. Alternatively, as yet another alternative embodiment, the second end of the exhaust flow path 120 is fitted to the second mounting portion 114.

[0109] 8, for example, the chamber wall 111 may be provided with a weakened area 112, and the second mounting portion 114 may be provided around the weakened area 112. Or, as an alternative embodiment, the chamber wall 111 may be provided with a first pressure reducing mechanism 113, and the second mounting portion 114 may be provided around the first pressure reducing mechanism 113. Or, as yet another alternative embodiment, the chamber wall 111 may further be provided with a through hole, and the second mounting portion 114 may be provided around the through hole.

[0110] Also, in the embodiment shown in FIG. 8, the second mounting portion 114 is a tubular structure, and its cross-sectional shape may be the same as that of the exhaust flow path 120, thereby achieving a good fit and mutual engagement between the two.

[0111] According to the technical solution of the embodiment of the present application, the exhaust passage 120 and the second mounting portion 114 are fitted together, thereby realizing the interconnection between the exhaust passage 120 and the chamber wall 111 of the battery chamber 110. This method is easy to implement and has high reliability of the connection between the exhaust passage 120 and the chamber wall 111, which is beneficial to improving the installation reliability of the exhaust passage 120 in the battery chamber 110 and improving the production efficiency of the energy storage container 100.

[0112] Optionally, in some embodiments, a seal member 140 is provided at at least one end of the exhaust passage 120, and the exhaust passage 120 is connected to the battery 10 and / or the chamber wall 111 of the battery chamber 110 via the seal member 140.

[0113] For example, referring to FIG. 7, a first mounting portion 124 is provided at the second end of the exhaust passage 120, and the first mounting portion 124 is attached to the chamber wall 111 of the battery chamber 110 via a seal member 140.

[0114] Furthermore, for example, referring to FIG. 8, when the exhaust flow path 120 is fitted into the second mounting portion 114, a sealing member 140 may be provided on the outer wall adjacent to the second end of the exhaust flow path 120, and the exhaust flow path 120 and the second mounting portion 114 are connected to each other via the sealing member 140.

[0115] Optionally, in the embodiment shown in Fig. 8, the sealing member 140 may be provided adjacent to one end of the second mounting portion 114 facing the battery 10, in addition to being provided adjacent to the second end of the exhaust flow path 120. In the embodiment shown in Fig. 8, the number of sealing members 140 may be multiple.

[0116] Optionally, the sealing member 140 includes, but is not limited to, a gasket or a soft plastic.

[0117] According to the technical solution of the embodiment of the present application, the exhaust passage 120 is connected to the battery 10 and / or the chamber wall 111 of the battery chamber 110 via the sealing member 140, thereby ensuring the tightness of the connection between the exhaust passage 120 and the chamber wall 111 of the battery 10 and / or the battery chamber 110, and exhaust such as high-temperature and high-pressure gas discharged from the battery 10 can be smoothly discharged to the outside of the battery chamber 110 through the exhaust passage 120 with excellent sealing properties, thereby ensuring the safety of the energy storage container 100.

[0118] Although the present application has been described with reference to preferred embodiments, various modifications may be made and equivalents may be substituted for the elements thereof without departing from the scope of the present application. In particular, the technical features recited in each embodiment may be combined in any manner as long as there is no structural contradiction. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions encompassed by the claims.

Claims

1. A battery chamber (110) that houses a housing and a plurality of batteries (10) including one or more battery cells packaged in the housing, and an exhaust flow path (120) installed between each battery (10) of the plurality of batteries (10) and a chamber wall (111) of the battery chamber (110), wherein the exhaust flow path (120) is used to exhaust gas generated inside the battery (10) to the outside of the battery chamber (110), and the internal space of the exhaust flow path (120) and the internal space of the battery chamber (110) are isolated from each other, An energy storage container (100) in which a heat insulating member (130) is provided on the chamber wall (111) of the battery chamber (110) and the exhaust flow path (120), and the heat insulating member (130) is used to keep the internal space of the battery chamber (110) warm.

2. 2. The energy storage container (100) of claim 1, wherein the exhaust flow path (120) includes a first exhaust flow path section (121) and a second exhaust flow path section (122), the plurality of batteries (10) are connected to the plurality of first exhaust flow path sections (121) in a one-to-one correspondence, the plurality of first exhaust flow path sections (121) are connected to at least one of the second exhaust flow path sections (122), and the at least one second exhaust flow path section (122) is connected to a chamber wall (111) of the battery chamber (110).

3. 2. The energy storage container (100) of claim 1, wherein the plurality of batteries (10) are connected to the plurality of exhaust flow paths (120) in a one-to-one correspondence, and the plurality of exhaust flow paths (120) are all connected to a chamber wall (111) of the battery chamber (110).

4. A weak area (112) is provided in the chamber wall (111) of the battery chamber (110), and the exhaust flow path (120) is connected to the battery (10) and the weak area (112); 2. The energy storage container (100) of claim 1, wherein the thickness of the weakened area (112) is smaller than the thickness of other areas of the chamber wall (111), and the weakened area (112) is adapted to rupture and release the gas pressure in the exhaust flow path (120) when the gas pressure exceeds a threshold value.

5. a first pressure reducing mechanism (113) is installed on a chamber wall (111) of the battery chamber (110), and the exhaust flow path (120) is connected to the battery (10) and the first pressure reducing mechanism (113); 2. The energy storage container (100) of claim 1, wherein the first pressure reducing mechanism (113) is adapted to operate to release gas pressure in the exhaust flow path (120) when the gas pressure in the exhaust flow path (120) exceeds a threshold value.

6. a second pressure reducing mechanism (101) is installed in the battery (10), and the second pressure reducing mechanism (101) is activated when the gas pressure inside the battery (10) exceeds a threshold value to release the gas pressure inside the battery (10); The energy storage container (100) of claim 1, wherein the exhaust passage (120) is connected to the second pressure reducing mechanism (101) and a chamber wall (111) of the battery chamber (110).

7. 7. The energy storage container (100) of claim 6, wherein the size of the exhaust flow path (120) in a first direction matches the size of the second pressure reducing mechanism (101) in the first direction, and the first direction is a direction parallel to a radial direction of the exhaust flow path (120).

8. 2. The energy storage container (100) of claim 1, wherein the battery (10) is provided with a mounting hole, and a first end of the exhaust flow path (120) is inserted into the mounting hole, thereby realizing a connection between the exhaust flow path (120) and the battery (10).

9. The energy storage container (100) according to claim 8, wherein a second pressure reducing mechanism (101) of the battery (10) is installed corresponding to the mounting hole facing the inside of the battery (10).

10. 2. The energy storage container (100) of claim 1, wherein a second end of the exhaust flow path (120) has a first mounting portion (124) having an annular structure, the first mounting portion (124) being parallel to and abutting a chamber wall (111) of the battery chamber (110), thereby realizing a connection between the exhaust flow path (120) and the chamber wall (111) of the battery chamber (110).

11. 2. The energy storage container (100) of claim 1, wherein the chamber wall (111) of the battery chamber (110) has a second mounting portion (114) extending toward the inside of the battery chamber (110), and the second mounting portion (114) is fitted to an inner wall or an outer wall of the exhaust flow path (120), thereby realizing a connection between the exhaust flow path (120) and the chamber wall (111) of the battery chamber (110).

12. 2. The energy storage container (100) of claim 1, wherein a sealing member (140) is provided at at least one end of the exhaust flow path (120), and the exhaust flow path (120) is connected to the battery (10) and / or a chamber wall (111) of the battery chamber (110) via the sealing member (140).

13. The energy storage container (100) of claim 12, wherein the sealing member (140) is a gasket or a soft plastic.

14. The energy storage container (100) according to any one of claims 1 to 13, wherein a thermal insulation member (130) provided on the exhaust flow path (120) and the chamber wall (111) of the battery chamber (110) includes rock wool.

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