Energy storage box and energy storage system

Abstract

The utility model discloses an energy storage box and an energy storage system, and relates to the technical field of heat dissipation, the energy storage box comprises a box body, a heat dissipation assembly and a heat dissipation fan, the box body is provided with an installation space, the installation space is used for accommodating electronic devices such as an energy storage module, the heat dissipation assembly is arranged on the box body and is provided with a heat dissipation space independent of the installation space, and the heat dissipation fan is arranged in the heat dissipation space. The heat dissipation space is used for exchanging heat with the installation space, the heat dissipation fan is arranged on the heat dissipation assembly and used for blowing air into the heat dissipation space, and heat exchange between the heat dissipation space and the external environment is achieved. The corresponding heat dissipation space and the corresponding heat dissipation fan are independently configured for the energy storage box body for heat dissipation, the heat dissipation performance of the single energy storage box body is guaranteed, meanwhile, the heat dissipation space and the installation space are independent of each other, and the protection level is high. The energy storage system can be applied to a heat dissipation scene of stacked battery clusters, and can ensure the temperature consistency and the protection level of each layer of energy storage box while improving the adaptive capacity of the energy storage system to the environment.

Description

Technical Field

[0001] This application relates to the technical field of heat dissipation, and more specifically, to an energy storage box body and an energy storage system. Background Art

[0002] For the convenience of users' use and maintenance, in existing stacked energy storage modules, types with a relatively high protection level (such as IP55 and above) generally adopt natural cooling as a heat dissipation means. For stacked energy storage modules with a lower protection level, cooling fans are usually installed in the energy storage box body to achieve heat dissipation. For stacked energy storage modules with a high protection level, there are problems of low heat dissipation efficiency and poor temperature consistency among each layer of energy storage modules. For stacked energy storage modules with a low protection level, there is a problem of insufficient IP protection level.

[0003] Therefore, while ensuring the protection level, how to improve the heat dissipation performance of stacked energy storage modules has become a technical problem that needs to be urgently solved by those skilled in the art. Utility Model Content

[0004] In view of this, the purpose of this application is to provide an energy storage box body to improve the heat dissipation performance of stacked energy storage modules while ensuring the protection level.

[0005] Another purpose of this application is to provide an energy storage system including the above-mentioned energy storage box body.

[0006] To achieve the above purpose, this application provides the following technical solutions:

[0007] An energy storage box body, comprising:

[0008] A box body main body, which has an installation space;

[0009] A heat dissipation component, which is arranged on the box body main body and is provided with a heat dissipation space independent of the installation space, and the heat dissipation space exchanges heat with the installation space;

[0010] A heat dissipation fan, which is arranged on the heat dissipation component and is used to blow air into the heat dissipation space.

[0011] Optionally, in the above-mentioned energy storage box body, the heat dissipation component includes a heat dissipation side plate and a heat dissipation mounting plate. The heat dissipation mounting plate is connected to the box body main body, and the heat dissipation side plate is arranged around the circumference of the heat dissipation mounting plate and jointly encloses the heat dissipation space with the heat dissipation mounting plate;

[0012] The heat dissipation fan is arranged on the heat dissipation side plate or the heat dissipation mounting plate.

[0013] Optionally, in the above-mentioned energy storage box body, the heat dissipation mounting plate and the box body bottom plate of the box body are of an integrally formed structure.

[0014] Optionally, in the above-mentioned energy storage box body, the heat dissipation side plate and the box body side plate of the box body are of an integrally formed structure.

[0015] Optionally, in the above-mentioned energy storage box body, heat dissipation teeth are provided on the heat dissipation mounting plate, and the heat dissipation teeth are arranged in the heat dissipation space.

[0016] Optionally, in the above-mentioned energy storage box body, an air inlet for air intake and an air outlet for air outlet are provided on the heat dissipation assembly. Both the air inlet and the air outlet are communicated with the heat dissipation space, and the air inlet and the air outlet are arranged on the same side or different sides of the box body.

[0017] Optionally, in the above-mentioned energy storage box body, a partition plate is arranged in the heat dissipation space. The partition plate divides the heat dissipation space into one or more guiding air ducts, and two ends of the guiding air duct are respectively communicated with the air inlet and the air outlet.

[0018] Optionally, in the above-mentioned energy storage box body, along the direction from the air inlet to the air outlet, the cross-sectional area of the guiding air duct gradually decreases or decreases in sections.

[0019] Optionally, in the above-mentioned energy storage box body, the box body includes a box body side plate, a box cover and a box body bottom plate. The box cover and the box body bottom plate are respectively arranged at two ends of the box body side plate, and the box body bottom plate and the box cover and the box body side plate jointly enclose the installation space;

[0020] The heat dissipation assembly is arranged on the box body bottom plate, and heat exchange between the heat dissipation space and the installation space is carried out through the box body bottom plate.

[0021] Optionally, in the above-mentioned energy storage box body, a first sealing assembly is arranged between the box cover and the box body side plate;

[0022] A second sealing assembly is arranged between the box body bottom plate and the box body side plate.

[0023] An energy storage system includes a plurality of energy storage modules and a plurality of the above-mentioned energy storage box bodies. The energy storage modules are arranged in each of the energy storage box bodies, and the energy storage box bodies are stacked and arranged to form at least one battery cluster.

[0024] Optionally, in the above-mentioned energy storage system, a heat exchange fan for heat exchange with the energy storage box body located at the top of the battery cluster is arranged at the top of the battery cluster.

[0025] Optionally, in the above energy storage system, two adjacent energy storage boxes in a group of the battery clusters are respectively a first box and a second box, the first box is arranged above the second box, and the heat dissipation space of the first box directly or indirectly exchanges heat with the box cover of the second box.

[0026] Optionally, in the above energy storage system, one group in the battery clusters is the main cluster, and the rest are auxiliary clusters. A switch box for electrically connecting with the power conversion system is arranged on the main cluster, and the auxiliary clusters are electrically connected with the main cluster.

[0027] The energy storage box provided by the present application includes a box body, a heat dissipation component and a heat dissipation fan. The box body has an installation space for accommodating electronic devices such as energy storage modules. The heat dissipation component is arranged on the box body and has a heat dissipation space independent of the installation space, and this heat dissipation space is used for heat exchange with the installation space. The heat dissipation fan is arranged on the heat dissipation component and is used to blow air into the heat dissipation space to realize the heat exchange between the heat dissipation space and the external environment. When the heat dissipation fan is started, the heat dissipation air flow blown out by the heat dissipation fan enters the heat dissipation space and exchanges heat with the heat dissipation component. The heat dissipation component exchanges heat through connection with the box body, and the box body then exchanges heat with the electronic devices in the installation space, thereby ensuring the operating temperature of the electronic devices in the installation space.

[0028] Compared with the prior art, the energy storage box provided by the present application dissipates heat by separately configuring a corresponding heat dissipation space and a heat dissipation fan for the energy storage box, which ensures the heat dissipation performance of a single energy storage box. At the same time, the heat dissipation space and the installation space are independent of each other, and the protection level is high. The present application can be applied to the heat dissipation scenario of battery clusters arranged in a stack, and can improve the environmental adaptability of the energy storage system while ensuring the temperature consistency and protection level at each layer of energy storage boxes.

[0029] The energy storage system provided by the present application includes a plurality of energy storage modules and a plurality of the above energy storage boxes. The energy storage modules are respectively arranged in each energy storage box in a one-to-one correspondence, and each energy storage box is stacked to form at least one group of battery clusters. Define two adjacent energy storage boxes in a group of battery clusters as a first box and a second box respectively. The first box is arranged above the second box, and the heat dissipation space of the first box is arranged on the box cover of the second box and can exchange heat with the box cover of the second box. Due to the above energy storage box, it also has the above structure and beneficial effects. Other structures refer to the prior art and will not be elaborated here. Description of the Drawings

[0030] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. In the drawings, the arrows indicate the flow direction of the heat dissipation air flow.

[0031] Figure 1 Structural schematic of the energy storage box disclosed in the embodiment of the present application Figure 1 ;

[0032] Figure 2 Structural schematic diagram of the layout of electronic devices in the installation space of the energy storage box disclosed in the embodiment of the present application;

[0033] Figure 3 Structural schematic of the energy storage box disclosed in the embodiment of the present application Figure 2 ;

[0034] Figure 4 Structural schematic of the energy storage box disclosed in the embodiment of the present application Figure 3 ;

[0035] Figure 5 Internal structural schematic diagram of the heat dissipation space disclosed in the embodiment of the present application;

[0036] Figure 6 Structural schematic of the heat dissipation air duct disclosed in the embodiment of the present application Figure 1 ;

[0037] Figure 7 Structural schematic of the heat dissipation air duct disclosed in the embodiment of the present application Figure 2 ;

[0038] Figure 8 Structural schematic of the heat dissipation air duct disclosed in the embodiment of the present application Figure 3 ;

[0039] Figure 9 Structural schematic of the heat dissipation air duct disclosed in the embodiment of the present application Figure 4 ;

[0040] Figure 10 Structural schematic of the heat dissipation air duct disclosed in the embodiment of the present application Figure 5 ;

[0041] Figure 11 Structural schematic of the heat dissipation air duct disclosed in the embodiment of the present application Figure 6 ;

[0042] Figure 12 Structural schematic diagram of the energy storage system disclosed in the embodiment of the present application;

[0043] Figure 13 Schematic diagram of the installation of the first box body and the second box body in the energy storage system disclosed in the embodiment of the present application Figure 1 ;

[0044] Figure 14 Schematic diagram of the installation of the first box body and the second box body in the energy storage system disclosed in the embodiment of the present application Figure 2 。

[0045] Among them, 100 is an energy storage box body, 101 is the first box body, 102 is the second box body, 103 is the first heat dissipation space, 104 is the second heat dissipation space, 110 is the box cover, 120 is the box body side plate, 121 is the installation space, 130 is the box body bottom plate, 140 is the first sealing component, and 150 is the second sealing component;

[0046] 200 is a heat dissipation fan, 210 is a heat dissipation side plate, 211 is an air inlet, 212 is an air outlet, 220 is a heat dissipation installation plate, 230 is a heat dissipation tooth, and 240 is a partition plate;

[0047] 300 is an electronic device, 310 is a switch box, and 320 is a power conversion system;

[0048] 400 is a heat exchange fan;

[0049] 500 is a base. Detailed implementation manners

[0050] The core of the present disclosure is to disclose an energy storage box body 100 to improve the heat dissipation performance of the stacked energy storage module while ensuring the protection level.

[0051] Another core of the present application is to disclose an energy storage system including the above-mentioned energy storage box body.

[0052] Hereinafter, the embodiments will be described with reference to the drawings. In addition, the embodiments shown below do not limit the content of the utility model described in the claims in any way. In addition, all the contents of the configurations shown in the following embodiments are not limited to those necessary for the solution of the utility model described in the claims. It should be noted that for the convenience of description, only the parts related to the relevant utility model are shown in the drawings. Without conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.

[0053] Combined with Figures 1 - 3, the energy storage box body 100 of the present disclosure includes a box body main body, a heat dissipation component, and a heat dissipation fan 200. The box body main body has an installation space 121, and electronic devices 300 such as energy storage modules (electric cores) are accommodated in the installation space 121. The heat dissipation component is arranged on the box body main body and has a heat dissipation space independent of the installation space 121, and this heat dissipation space is used for heat exchange with the installation space 121. The heat dissipation fan 200 is arranged on the heat dissipation component and is used to blow air into the heat dissipation space to realize the heat exchange between the heat dissipation space and the external environment.

[0054] After the heat dissipation fan 200 is started, the heat dissipation air flow blown out by the heat dissipation fan 200 enters the heat dissipation space and exchanges heat with the heat dissipation component. The heat dissipation component exchanges heat through connection with the box body main body, and then the box body main body exchanges heat with the electronic devices 300 in the installation space 121, thereby ensuring the operating temperature of the electronic devices in the installation space 121.

[0055] Compared with the prior art, the energy storage box body 100 of the present disclosure dissipates heat by separately configuring a corresponding heat dissipation space and a heat dissipation fan 200 for the energy storage box body 100, ensuring the heat dissipation performance of a single energy storage box body 100. At the same time, the heat dissipation space and the installation space 121 are independent of each other, and the protection level is high. The present disclosure can be applied to the heat dissipation scenario of battery clusters arranged in a stacked manner, and can improve the environmental adaptability of the energy storage system while ensuring the temperature consistency and protection level at each layer of the energy storage box body.

[0056] Specifically, in combination with Figure 5 , the heat dissipation component includes a heat dissipation side plate 210 and a heat dissipation mounting plate 220. The heat dissipation mounting plate 220 is connected to the box body main body (box body bottom plate 130). The heat dissipation side plate 210 is arranged around the circumference of the heat dissipation mounting plate 220 and together with the heat dissipation mounting plate 220 encloses a heat dissipation space. Among them, the heat dissipation fan 200 can be arranged on the heat dissipation side plate 210 or the heat dissipation mounting plate 220.

[0057] When the energy storage box bodies 100 are arranged in a stacked manner, it is defined that among two adjacent energy storage box bodies 100 in the stacking direction, the energy storage box body 100 located above is the first box body 101, and the energy storage box body 100 located below is the second box body 102. Then, in the above embodiment, the heat dissipation component of the first box body 101 can cooperate with the box cover 110 of the second box body 102 to enclose a sealed heat dissipation space (except for the air inlet and air outlet) of the first box body 101. At the same time, the heat dissipation space of the first box body 101 can also exchange heat with the installation space 121 of the second box body 102 through the box cover 110 of the second box body 102.

[0058] Compared with the solution of directly setting the heat dissipation space of a single energy storage box body 100 as a sealed space (except for the air inlet and air outlet) (that is, the heat dissipation component includes a heat dissipation side plate 210, a heat dissipation mounting plate 220, and a heat dissipation bottom plate, the heat dissipation mounting plate 220 and the heat dissipation bottom plate are arranged oppositely and are respectively connected to both sides of the heat dissipation side plate 210, and at the same time, the heat dissipation side plate 210, the heat dissipation mounting plate 220, and the heat dissipation bottom plate jointly enclose a closed heat dissipation space), the heat dissipation component in the above embodiment has a simple structure and lower cost.

[0059] In addition, the heat dissipation mounting plate 220 and the box body bottom plate 130 of the box body can be set as an integral structure or a split structure, preferably an integral structure, so as to simplify the assembly and reduce the cost. Specifically, the heat dissipation mounting plate 220 and the box body bottom plate 130 are usually made of metal and the main body is in a plate shape, so they can be prepared as an integral structure by integral forming methods such as extrusion, rolling, stamping, etc.

[0060] At the same time, when the heat dissipation mounting plate 220 and the box body bottom plate 130 are set as an integral structure, since there is no gap between the heat dissipation mounting plate 220 and the box body bottom plate 130, the increase in the thermal resistance between the installation space 121 and the heat dissipation space caused by the existence of air in the gap is avoided, thereby effectively improving the heat dissipation efficiency of the energy storage box body 100.

[0061] In a further optimized solution, the heat dissipation side plate 210 and the box body side plate 120 of the box body are an integral structure, so as to simplify the assembly and reduce the cost. Specifically, the heat dissipation side plate 210 and the box body side plate 120 can be prepared as an integral structure by integral forming methods such as extrusion, rolling, stamping, etc. In this embodiment, by adjusting the installation position of the box body bottom plate 130 on the box body side plate 120, the relative sizes of the installation space 121 and the heat dissipation space can be adjusted.

[0062] In order to enhance the heat dissipation effect, combined with Figures 3 - 5 , heat dissipation teeth 230 are provided on the heat dissipation mounting plate 220, and the heat dissipation teeth 230 are arranged in the heat dissipation space, used to increase the heat exchange area between the heat dissipation mounting plate 220 and the heat exchange air flow and enhance the heat dissipation capacity. When the heat dissipation mounting plate 220 and the box body bottom plate 130 of the box body are an integral structure, the heat dissipation teeth 230 are directly provided on the box body bottom plate 130.

[0063] The above heat dissipation teeth 230 and the heat dissipation mounting plate 220 or the box body bottom plate 130 can be an integral structure or a split structure. The heat dissipation teeth 230 can be welded or bonded to the heat dissipation mounting plate 220 or the box body bottom plate 130. The heat dissipation teeth 230 can specifically be Figure 5 the plate shape shown in Figure 4 and Figure 7 the block shape shown in

[0064] Combined with Figures 3 - 5 , an air inlet 211 for air intake and an air outlet 212 for air outlet are provided on the heat dissipation component. Both the air inlet 211 and the air outlet 212 are communicated with the heat dissipation space. The air inlet 211 and the air outlet 212 can be directly provided on the heat dissipation side plate 210, or the air inlet 211 and the air outlet 212 can be reserved at the connecting part of the heat dissipation component and the box body bottom plate 130 (for example, when the heat dissipation mounting plate 220 and the box body bottom plate 130 are of an integral structure, the air inlet 211 and the air outlet 212 are reserved at the connecting part of the box body side plate 120 and the heat dissipation side plate 210).

[0065] Among them, the air inlet 211 and the air outlet 212 can be provided on the same side or different sides of the box body. Preferably, the air inlet 211 and the air outlet 212 are provided on the opposite sides of the box body to effectively drive the air flow in the surrounding environment of the energy storage box 100 to flow and improve the heat dissipation effect. The scheme of setting the air inlet 211 and the air outlet 212 on the opposite sides of the box body effectively avoids the situation that the high-temperature air flow after heat exchange blown out from the air outlet 212 re-enters the heat dissipation space from the air inlet 211, ensuring the heat exchange effect.

[0066] Combined with Figure 6 and Figure 11 (the arrows in the figure indicate the flow direction of the heat dissipation air flow. The position where the heat dissipation air flow enters the heat dissipation space from the outside is the air inlet 211, and the position where the heat dissipation air flow flows to the outside is the air outlet 212), the heat dissipation fan 200 can be specifically arranged at the air inlet 211 or the air outlet 212.

[0067] According to the actual demand for the flow rate of the heat dissipation air flow, one or more heat dissipation fans 200 can be provided on one energy storage box 100. Correspondingly, the air inlet 211 or the air outlet 212 can be one or more corresponding to the heat dissipation fans 200 one by one. The positions of the air inlet 211 and the air outlet 212 can be adjusted according to the actual situation. Exemplarily, Figure 6 and Figure 7 both show the layout scheme with one air inlet 211 and two air outlets 212.

[0068] In some embodiments, in order to ensure the sufficient heat exchange between the heat dissipation air flow in the heat dissipation space and the electronic devices 300 in the installation space 121, combined with Figure 6 , a partition plate 240 is provided in the heat dissipation space. The partition plate 240 divides the heat dissipation space into one or more guiding air ducts. Both ends of the guiding air duct are communicated with the air inlet 211 and the air outlet 212 respectively. The heat dissipation fan 200 drives the air flow to enter from the air inlet and flow along the guiding air duct, and finally flows out from the air outlet 212.

[0069] The partition plate 240 can be specifically arranged on the heat dissipation mounting plate 220 or the bottom plate 130 of the box body. By reasonably setting the position and quantity of the partition plate 240, the extension length of the guiding air duct can be effectively extended, thereby prolonging the flowing time of the heat dissipation air flow in the heat dissipation space and ensuring sufficient heat exchange.

[0070] In some embodiments, along the direction from the air inlet 211 to the air outlet 212, the cross-sectional area of the guiding air duct gradually decreases or decreases in sections. Combining Figure 8 and Figure 9 (D1>D2>D3), it shows an arrangement scheme in which the cross-sectional area of the guiding air duct decreases in sections along the direction from the air inlet 211 to the air outlet 212. Combining Figure 10 , (D4>D5+D6), it shows an arrangement scheme in which the cross-sectional area of the guiding air duct gradually decreases along the direction from the air inlet 211 to the air outlet 212. This arrangement enables the heat dissipation air flow with a lower temperature located upstream of the guiding air duct to have a lower flow rate, and can fully exchange heat with the electronic device 300 in the installation space. The heat dissipation air flow with a higher temperature located downstream of the guiding air duct has a higher flow rate, so as to effectively exchange heat with the electronic device 300 in the installation space by increasing the flow rate.

[0071] Combining Figure 7 and Figure 9 , when the guiding air duct and the heat dissipation teeth 230 are arranged together, the above-mentioned heat dissipation teeth 230 are arranged in the guiding air duct, and the specific shape of the heat dissipation teeth 230 is not limited, as long as it is ensured that the guiding air duct will not be blocked.

[0072] As Figure 9 shown, for the arrangement scheme in which the cross-sectional area of the guiding air duct decreases in sections, different numbers of heat dissipation plates can be arranged in different sections of the guiding air duct as the heat dissipation teeth 230 for heat exchange.

[0073] As Figure 1 shown, the box body includes box body side plates 120, a box cover 110 and a box body bottom plate 130. The box cover 110 and the box body bottom plate 130 are respectively arranged at both ends of the box body side plates 120, and the box body bottom plate 130 and the box cover 110 and the box body side plates 120 jointly enclose an installation space 121. Combining Figure 3 and Figure 4 [[ID=:30]], the heat dissipation component is arranged on the box body bottom plate 130, and the heat dissipation space exchanges heat with the installation space 121 through the box body bottom plate 130. When stacking, the first heat dissipation space 103 of the first box body 101 contacts the box cover 110 of the second box body 102, and can exchange heat with the installation spaces 121 of the first box body 101 and the second box body 102 at the same time.

[0074] To ensure the protection level of the energy storage box body 100, a first sealing component 140 is provided between the box cover 110 and the box body side plate 120; a second sealing component 150 is provided between the box body bottom plate 130 and the box body side plate 120. The first sealing component 140 and the second sealing component 150 are used to respectively realize the sealed connection between the box body side plate 120 and the box cover 110 and the box body bottom plate 130, so as to ensure the mutual isolation between the installation space 121, the heat dissipation space and the outside world, and ensure that the protection level of the energy storage box body 100 meets the design requirements (exemplarily, meets the dust-tight structural characteristics of IP55 and above).

[0075] Both the above-mentioned first sealing component 140 and second sealing component 150 can be realized in the form of setting sealing gaskets, and the box body side plate 120 and the box cover 110 and the box body bottom plate 130 can be fixed by bolts.

[0076] In the above embodiment, the box body bottom plate 130 and the box body side plate 120 are of a split structure, so the second sealing component 150 needs to be provided. It can be understood that the above-mentioned box body side plate 120 and box body bottom plate 130 can be set as an integral structure (for example, the box body side plate 120 and the box body bottom plate 130 are connected by welding), and correspondingly, the setting of the second sealing component 150 can be cancelled.

[0077] In the installation space, the electronic device 300 is used to be placed on the box body bottom plate 130, and the heat of the electronic device 300 exchanges heat with the heat dissipation air flow in the heat dissipation space through the conduction of the box body bottom plate 130. The electronic device 300 and the box body bottom plate 130 can be in direct contact. In some embodiments, in order to enhance the heat conduction effect between the electronic device 300 and the box body bottom plate 130, flexible or rigid materials such as heat conduction pads and heat conduction adhesives are provided on the box body bottom plate 130 as a heat conduction structure layer to enhance the heat conduction effect.

[0078] Combined with Figures 12 - 14 , the energy storage system of the present disclosure includes a plurality of energy storage modules and a plurality of the above-mentioned energy storage box bodies 100. The energy storage modules are arranged in each energy storage box body 100 in a one-to-one correspondence, and each energy storage box body 100 is stacked to form at least one battery cluster.

[0079] Due to the above-mentioned energy storage box body 100, it also has the above-mentioned structure and beneficial effects. Other structures refer to the prior art and will not be elaborated here.

[0080] Define two adjacent energy storage boxes 100 in a group of battery clusters as the first box 101 and the second box 102 respectively. The first box 101 is arranged above the second box 102, and the heat dissipation space of the first box 101 is arranged on the box cover 110 of the second box 102 and can directly or indirectly exchange heat with the box cover 110 of the second box 102. Specifically, along the stacking direction, when the bottom of the heat dissipation space of the first box 101 is the open structure shown in Figure 5 it is in direct contact with the box cover 110 of the second box 102. At this time, the heat dissipation space of the first box 101 can directly exchange heat with the box cover 110 of the second box 102; along the stacking direction, when the bottom of the heat dissipation space of the first box 101 is a closed structure (that is, the energy storage box 100 scheme in which the heat dissipation space is a sealed space except for the air inlet and outlet), the heat dissipation space of the first box 101 is in indirect contact with the box cover 110 of the second box 102. At this time, the heat dissipation space of the first box 101 exchanges heat with the box cover 110 of the second box 102 indirectly. The energy storage box 100 with an open structure at the bottom of the heat dissipation space uses less materials, has a lower cost, and has a simpler processing technology.

[0081] Combined with Figure 12 , in some embodiments, multiple energy storage boxes 100 of the energy storage system are stacked to form multiple groups of battery clusters. One group of battery clusters is the main cluster, and the rest of the battery clusters are auxiliary clusters. Each battery cluster is arranged on the base 500, and a switch box 310 is arranged on the main cluster. The switch box 310 is electrically connected to the power conversion system 320 (PCS, Power Conversion System), and the auxiliary cluster is electrically connected to the main cluster. The energy storage boxes 100 on each battery cluster can all exchange heat with the external environment, have strong adaptability to the environment, and can ensure the temperature consistency in the installation space 121 of the energy storage boxes 100 on different layers of the battery cluster. At the same time, the installation space 121 of each energy storage box 100 is independent of the heat dissipation space and the outside world, taking into account the protection level while ensuring the heat dissipation efficiency.

[0082] Except for the energy storage box 100 at the top of the battery cluster, heat dissipation spaces are arranged above and below the installation space 121 of the rest of the energy storage boxes 100 (combined with Figure 14 , the top of the installation space 121 of the second box 102 can exchange heat with the first heat dissipation space 103 of the first box 101, and the bottom can exchange heat with the second heat dissipation space 104 of the second box 102). Therefore, in order to ensure the heat dissipation effect of the energy storage box 100 at the top of the battery cluster, a heat exchange fan 400 for exchanging heat with the energy storage box 100 at the top of the battery cluster is arranged at the top of each battery cluster.

[0083] Among them, combined with Figure 12, the heat exchange fan 400 of the main cluster can be arranged on the switch box 310 to simultaneously perform heat exchange on the switch box 310.

[0084] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present disclosure. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Specific technical means in some embodiments can be partially or wholly incorporated into other embodiments on the premise that they are not explicitly excluded by another embodiment. Therefore, the present disclosure will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A energy storage box, characterized in that, Comprising: A box body main body, the box body main body having an installation space (121); A heat dissipation component, disposed on the box body main body, and provided with a heat dissipation space independent of the installation space (121), the heat dissipation space exchanging heat with the installation space (121); A heat dissipation fan (200), disposed on the heat dissipation component, and configured to blow air into the heat dissipation space.

2. The energy storage box according to claim 1, wherein The heat dissipation component includes a heat dissipation side plate (210) and a heat dissipation mounting plate (220), the heat dissipation mounting plate (220) being connected to the box body main body, the heat dissipation side plate (210) being arranged circumferentially around the heat dissipation mounting plate (220), and jointly enclosing the heat dissipation space with the heat dissipation mounting plate (220); The heat dissipation fan (200) is disposed on the heat dissipation side plate (210) or the heat dissipation mounting plate (220).

3. The energy storage box according to claim 2, characterized in that, The heat dissipation mounting plate (220) and the box body bottom plate (130) of the box body main body are of an integrally formed one-piece structure.

4. The energy storage box according to claim 3, wherein, The heat dissipation side plate (210) and the box body side plate (120) of the box body main body are of an integrally formed one-piece structure.

5. The energy storage box according to claim 2, wherein, Heat dissipation teeth (230) are provided on the heat dissipation mounting plate (220), and the heat dissipation teeth (230) are disposed in the heat dissipation space.

6. The energy storage box according to claim 1, characterized in that An air inlet (211) for air intake and an air outlet (212) for air outlet are provided on the heat dissipation component, both the air inlet (211) and the air outlet (212) being communicated with the heat dissipation space, and the air inlet (211) and the air outlet (212) being provided on the same side or different sides of the box body main body.

7. The energy storage box according to claim 6, wherein A partition plate (240) is disposed in the heat dissipation space, the partition plate (240) dividing the heat dissipation space to form one or more guiding air ducts, and two ends of the guiding air duct being respectively communicated with the air inlet (211) and the air outlet (212).

8. The energy storage box according to claim 7, characterized in that In the direction from the air inlet (211) to the air outlet (212), the cross-sectional area of the guiding air duct gradually decreases or decreases in sections.

9. The energy storage box according to claim 1, wherein The box body main body includes a box body side plate (120), a box cover (110) and a box body bottom plate (130), the box cover (110) and the box body bottom plate (130) being respectively disposed at two ends of the box body side plate (120), and the box body bottom plate (130), the box cover (110) and the box body side plate (120) jointly enclosing the installation space (121); The heat dissipation component is disposed on the box body bottom plate (130), and the heat dissipation space exchanges heat with the installation space (121) through the box body bottom plate (130).

10. The energy storage box according to claim 9, characterized in that, A first sealing component (140) is provided between the box cover (110) and the box body side plate (120); A second sealing component (150) is provided between the box body bottom plate (130) and the box body side plate (120).

11. An energy storage system, characterized in that, Comprising a plurality of energy storage modules and a plurality of energy storage boxes as described in any one of claims 1-10, the energy storage modules being disposed in each of the energy storage boxes, and the energy storage boxes being stacked to form at least one battery cluster.

12. The energy storage system according to claim 11, wherein, A heat exchange fan (400) for heat exchange with the energy storage box body located at the top of the battery cluster is provided at the top of the battery cluster.

13. The energy storage system according to claim 11, wherein Among a group of the battery clusters, two adjacent energy storage box bodies are respectively a first box body (101) and a second box body (102). The first box body (101) is arranged above the second box body (102), and the heat dissipation space of the first box body (101) directly or indirectly exchanges heat with the box cover (110) of the second box body (102).

14. The energy storage system according to claim 11, wherein, One group in the battery clusters is the main cluster, and the rest are auxiliary clusters. A switch box (310) for electrically connecting with the power conversion system (320) is provided on the main cluster, and the auxiliary clusters are electrically connected with the main cluster.

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