Energy storage device

Abstract

The embodiment of the utility model relates to the technical field of energy storage, in particular to an energy storage device which comprises a box body and an energy storage body, the box body comprises a box shell, a supporting base and a connecting assembly, the box shell is provided with a containing cavity, the supporting base is connected to the bottom face of the box shell, and the connecting assembly is arranged on the supporting base. The connecting assembly is used for detachably fixing the energy storage device to a transport tool, the supporting base is provided with inserting holes, the inserting holes penetrate through the supporting base in the direction parallel to the bottom face, the inserting holes are used for allowing transfer tools to be inserted, and the energy storage body is arranged in the containing cavity and used for storing and outputting electric energy. By means of the mode, the energy storage device can be detachably installed on the transport tool, and can be used for being matched, inserted and fixed by a transfer tool on the occasions where use of the transport tool is limited, such as narrow alleys, rugged mountain roads or muddy roads, so that the energy storage device can be conveniently and rapidly transferred.

Description

Technical Field

[0001] The embodiment of the utility model relates to the field of energy storage technology, and in particular to an energy storage device. Background Art

[0002] An emergency energy storage vehicle is a vehicle used to provide power support in emergency situations. It is usually equipped with an energy storage device to provide a reliable power supply for key equipment, medical facilities, communication base stations, etc. in outdoor emergency power situations (for example, power outages, natural disasters, accidents or other emergencies).

[0003] In the process of implementing the embodiments of the present application, the inventors found that: At present, in order to improve the protection level of the energy storage device and the energy storage device to flexibly support different occasions, the energy storage device of the emergency energy storage vehicle basically adopts a container-type structure design, and the energy storage device is detachably connected to the compartment of the emergency energy storage vehicle. When the emergency energy storage vehicle is limited to some outdoor emergency power occasions, such as narrow alleys, rugged mountain roads or muddy roads, the energy storage device connected to the compartment needs to be disassembled and transferred to a specific emergency power occasion through a small transport tool. The energy storage device of the emergency energy storage vehicle with a container-type structure design is square as a whole, lacks a structure that is compatible with loading on a small transport tool, and cannot be adapted to be loaded on a small transport tool (for example, a forklift or a crane, etc.) for transportation. Utility Model Content

[0004] The main technical problem solved by the embodiments of the utility model is to provide an energy storage device that can not only be detachably connected to a transportation vehicle, but also be adapted for transportation by a transportation vehicle.

[0005] In order to solve the above technical problems, a technical solution adopted in an embodiment of the utility model is: to provide an energy storage device, including a box body and an energy storage body, the box body includes a box shell, a support base and a connecting assembly, the box shell is provided with a receiving cavity, the supporting base is connected to the bottom surface of the box shell, the connecting assembly is arranged on the supporting base, the connecting assembly is used to detachably fix the energy storage device to a transportation tool, the supporting base is provided with a plug-in hole, the plug-in hole passes through the supporting base in a direction parallel to the bottom surface, the plug-in hole is used for the transportation tool to be plugged in, the energy storage body is arranged in the receiving cavity, and the energy storage body is used to store and output electric energy.

[0006] Optionally, the plug-in hole includes a first plug-in hole and a second plug-in hole, the first plug-in hole penetrates the support base along a first direction, and the second plug-in hole penetrates the support base along a second direction, the first plug-in hole and the second plug-in hole are both used for plugging in a transfer tool, the first direction and the second direction are both parallel to the bottom surface, and the first direction and the second direction are perpendicular.

[0007] Optionally, the support base includes a plurality of cross bars, which are arranged at intervals along the first direction, and the gap between any two adjacent cross bars constitutes a second plug-in hole. The cross bars are provided with through holes, which penetrate the cross bars along the first direction. The through holes of the plurality of cross bars are aligned along the first direction, and the through holes of the plurality of cross bars constitute the first plug-in hole.

[0008] Optionally, there are at least three cross bars, and the at least three cross bars are spaced apart to form at least two second plug-in holes, and / or each cross bar has at least two through holes, and the at least two through holes are spaced apart on each cross bar along the second direction, and the through holes of the several cross bars are aligned along the first direction to form at least two first plug-in holes.

[0009] Optionally, the number of the connecting components is two, and the two connecting components are fixed to opposite sides of the supporting base along a direction parallel to the bottom surface.

[0010] Optionally, the connecting assembly includes a mounting plate and a screw connection, the mounting plate includes a first mounting portion and a second mounting portion, the first mounting portion and the second mounting portion are connected and perpendicular to each other, the first mounting portion is fixed to the support base, the second mounting portion is provided with a through hole, and the screw connection is used to pass through the through hole and then be screwed to the transport vehicle.

[0011] Optionally, the energy storage device further includes a first shock absorbing member, and the first shock absorbing member is arranged on a surface of the support base facing away from the box shell.

[0012] Optionally, the energy storage device also includes a second shock absorber, the energy storage body includes a battery pack, the battery pack includes a case and a battery pack, the case is provided with a cavity, the battery pack is fixed in the cavity, and the second shock absorber is arranged between the outer wall of the battery pack and the inner wall of the cavity.

[0013] Optionally, the energy storage device also includes a guide member, which is arranged in the receiving cavity, and the guide member separates the receiving cavity to form a first chamber and a second chamber. The box shell is also provided with a first air inlet and a first air outlet, and the first air inlet, the first chamber and the first air outlet are connected in sequence to form a first heat dissipation channel. The energy storage body also includes a first heat dissipation fan, and the battery pack and the first heat dissipation fan are arranged in the first heat dissipation channel.

[0014] Optionally, the box shell is further provided with a second air inlet and a second air outlet, the second air inlet, the second chamber and the second air outlet are sequentially connected to form a second heat dissipation channel, the energy storage body further includes an inverter and a second heat dissipation fan, the inverter and the second heat dissipation fan are arranged in the second heat dissipation channel, and the inverter is electrically connected to the battery pack.

[0015] The beneficial effects of the embodiments of the utility model are as follows: Different from the prior art, the embodiments of the utility model include a box body and an energy storage body, the box body includes a box shell, a support base and a connection assembly, the box shell is provided with a receiving cavity, the support base is connected to the bottom surface of the box shell, the connection assembly is arranged on the support base, the connection assembly is used to detachably fix the energy storage device to the transportation tool, the support base is provided with plug-in holes, the plug-in holes all penetrate the support base in a direction parallel to the bottom surface, the plug-in holes are used for the transportation tool to be plugged in, the energy storage body is arranged in the receiving cavity, and the energy storage body is used to store and output electrical energy. In the above manner, the embodiments of the utility model can not only be detachably mounted and disassembled on the transportation tool, but also can be adapted for plugging and fixing the transportation tool in narrow alleys, rugged mountain roads or muddy roads where the use of the transportation tool is restricted, so as to facilitate the rapid transfer of the energy storage device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific embodiments of the utility model or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the prior art description. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0017] Figure 1 It is a schematic diagram of the overall structure of the energy storage device provided by the embodiment of the utility model;

[0018] Figure 2 It is a cross-sectional view of the overall structure of the energy storage device provided by the embodiment of the utility model;

[0019] Figure 3 It is an exploded view of the overall structure of the energy storage device provided by the embodiment of the utility model;

[0020] Figure 4 It is a structural schematic diagram of a first plug-in hole of an energy storage device provided in an embodiment of the utility model;

[0021] Figure 5 It is a structural schematic diagram of a second plug-in hole of an energy storage device provided in an embodiment of the utility model;

[0022] Figure 6 It is a structural schematic diagram of a connection assembly of an energy storage device provided in an embodiment of the utility model.

[0023] Description of reference numerals:

[0024] 1 box body, 11 box shell, 111 receiving cavity, 1111 first chamber, 1112 second chamber, 112 first air inlet, 113 first air outlet, 114 second air inlet, 115 second air outlet, 12 support base, 121 plug hole, 1211 first plug hole, 1212 second plug hole, 122 cross bar, 1221 through hole, 1222 weight reduction groove, 13 connecting assembly, 131 mounting plate, 1311 first mounting part, 1312 second mounting part, 132 screw connection, 2 energy storage body, 21 battery pack, 22 first cooling fan, 23 inverter, 24 second cooling fan, 3 guide member. DETAILED DESCRIPTION

[0025] In order to facilitate the understanding of the utility model, the utility model is described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on another element or there can be one or more centered elements therebetween. When an element is described as "connected" to another element, it can be directly connected to another element or there can be one or more centered elements therebetween. The orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "vertical", "horizontal", etc. used in this specification is based on the orientation or positional relationship shown in the accompanying drawings, only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0026] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by technicians in the technical field of the present invention. The terms used in this specification are only for the purpose of describing specific embodiments and are not used to limit the present invention. The term "and / or" used in this specification includes any and all combinations of one or more related listed items.

[0027] See also Figures 1 to 3The utility model provides an embodiment of an energy storage device, the energy storage device includes a box body 1 and an energy storage body 2, the box body 1 includes a box shell 11, a support base 12 and a connecting component 13, the box shell 11 is provided with a receiving cavity 111, the support base 12 is connected to the bottom surface of the box shell 11, the connecting component 13 is arranged on the supporting base 12, the connecting component 13 is used to detachably fix the energy storage device to a transportation tool, the supporting base 12 is provided with a plug-in hole 121, the plug-in hole 121 all penetrates the supporting base 12 in a direction parallel to the bottom surface, the plug-in hole 121 is used for the transportation tool to be plugged in, the energy storage body 2 is arranged in the receiving cavity 111, and the energy storage body 2 is used to store and output electric energy.

[0028] For the above energy storage devices, see Figures 1 to 3 The cross-sectional shape of the box shell 11 includes but is not limited to a square, polygonal, circular or elliptical regular shape or other irregular shape shells. The cross-sectional shape of the box shell 11 refers to the surface of the box shell 11 intercepted in a direction perpendicular to the bottom surface of the box shell 11. The support base 12 includes but is not limited to being fixed to the bottom surface of the box shell 11 by one or more connection methods such as welding, screwing, bonding, clamping or clamping. It can be understood that in some embodiments, in addition to being connected to the bottom surface of the box shell 11, the support base 12 can also be connected to the side or top surface of the box shell 11, etc., and it is only necessary that the support base 12 at least partially extends to the bottom surface of the box shell 11. The plug-in hole 121 passes through the support seat in a direction parallel to the bottom surface, and the number of the plug-in holes 121 is at least two. By setting at least two plug-in holes 121, the position for the transport tool (for example: forklift or crane) to be plugged in can be increased, so that the energy storage device is evenly stressed during the process of the transport tool transporting the energy storage device, thereby improving the transport stability.

[0029] For the above-mentioned plug hole 121, see Figures 3 to 5 , the plug-in hole 121 includes a first plug-in hole 1211 and a second plug-in hole 1212, the first plug-in hole 1211 penetrates the support base 12 along the first direction, the second plug-in hole 1212 penetrates the support base 12 along the second direction, the first plug-in hole 1211 and the second plug-in hole 1212 are both used for the transportation tool to be plugged in, the first direction and the second direction are both directions parallel to the bottom surface, and the first direction and the second direction are perpendicular. In the above manner, the support base 12 is formed with plug-in holes 121 along different directions, so that the transportation tool can select different plug-in holes 121 for plugging according to its own position or direction of travel, so as to achieve connection with the support base 12, thereby improving the adaptability of the support base 12 for the transportation tool to be connected in different directions, which is beneficial to the rapid transportation of the energy storage device.

[0030] Further, for the first plug hole 1211 and the second plug hole 1212, please refer to Figures 3 to 5The support base 12 includes a plurality of cross bars 122, and the plurality of cross bars 122 are arranged at intervals along the first direction. The gap between any two adjacent cross bars 122 constitutes a second plug-in hole 1212. The cross bar 122 is provided with a through hole 1221, and the through hole 1221 penetrates the cross bar 122 along the first direction. The through holes 1221 of the plurality of cross bars 122 are aligned along the first direction, and the through holes 1221 of the plurality of cross bars 122 constitute a first plug-in hole 1211.

[0031] For further information, see Figures 3 to 5 There are at least three crossbars 122, and at least three crossbars 122 are arranged at intervals to form at least two second plug-in holes 1212, and / or, each crossbar 122 has at least two through holes 1221, and at least two through holes 1221 are arranged at intervals along the second direction on each crossbar 122, and the through holes 1221 of several crossbars 122 are aligned along the first direction to form at least two first plug-in holes 1211. In the above manner, the number of first plug-in holes 1211 and / or second plug-in holes 1212 for the transport tool (for example, forklift or crane) to be plugged in can be increased, so that there are multiple connection positions between the transport tool and the support base 12, and the energy storage device is evenly stressed during the process of the transport tool transporting the energy storage device, thereby improving the transport stability.

[0032] Further, for the cross bar 122, in order to reduce the weight of the cross bar 122, thereby reducing the weight of the support base 12, and thus reducing the weight of the energy storage device, please refer to Figures 3 to 5 The cross bar 122 is hollowed out to have a plurality of weight-reducing grooves 1222, and the plurality of weight-reducing grooves 1222 are arranged at intervals along the second direction. In the above manner, the weight of the energy storage device can be reduced, thereby making the energy storage device lighter and more convenient to transport, thereby improving the transport efficiency. In addition, by reducing the weight of the energy storage device, the load and pressure on the transport tool can be reduced, the probability of damaging the transport tool can be reduced, and the service life of the transport tool can be extended.

[0033] For the above-mentioned connection assembly 13, in order to improve the stability of the connection between the support base 12 and the transportation vehicle, please refer to Figures 3 to 5 , the number of the connecting components 13 is two, and the two connecting components 13 are fixed to the opposite sides of the support base 12 in a direction parallel to the bottom surface. In the above manner, when the connecting components 13 fixed to the opposite sides of the support base 12 are connected to the transportation vehicle, the forces on both sides of the support base 12 can be evenly applied, thereby improving the stability of the support base 12. In addition, in some embodiments, the number of the connecting components 13 is several, and the several connecting components 13 are evenly and symmetrically distributed on the opposite sides of the support base 12, that is, the several connecting components 13 are evenly divided into two parts, one part of which is evenly arranged on one side of the support base 12, and the other part is evenly arranged on the opposite other side of the support base 12.

[0034] Further, for the above-mentioned connection component 13, please refer to Figure 6 The connection assembly 13 includes a mounting plate 131 and a screw connection 132. The mounting plate 131 includes a first mounting portion 1311 and a second mounting portion 1312. The first mounting portion 1311 and the second mounting portion 1312 are connected and perpendicular to each other. The first mounting portion 1311 is fixed to the support base 12. The second mounting portion 1312 is provided with a through hole. The screw connection 132 is used to pass through the through hole and then be screwed to the transportation tool. The first mounting portion 1311 is connected and fixed to the side of the support base 12 by a plurality of screws. The second mounting portion 1312 has a plurality of through holes, which are evenly spaced. The number of screw connections 132 corresponds to the number of through holes, and one screw connection 132 is provided through one through hole. In some embodiments, when the connecting component 13 is connected to a means of transport, for example, when the connecting component 13 is connected to the compartment of a transport vehicle, the compartment of the transport vehicle is provided with a screw hole corresponding to the screw connection 132, and the connecting component 13 is fixed to the compartment of the transport vehicle by screwing the screw connection 132 with the screw hole, thereby stably fixing the energy storage device to the compartment of the transport vehicle to form an emergency energy storage vehicle.

[0035] Furthermore, considering that the energy storage device is connected and fixed to the carriage of the transport vehicle or connected to the transport tool, the body of the transport vehicle is prone to vibration during the driving process or the transport tool during the transport process. In order to reduce the vibration generated by the body from being transmitted to the energy storage device through the support base 12, please refer to Figures 1 to 3 The energy storage device further includes a first shock absorbing member (not shown), which is disposed on the surface of the support base 12 away from the box shell 11, wherein the first shock absorbing member (not shown) includes but is not limited to being fixed to the surface of the support base away from the box shell 11 by bonding, screwing, clamping or other connection methods. In some embodiments, the first shock absorbing member (not shown) is a rubber pad with a fixed thickness, which covers the surface of the support base 12 away from the box shell 11, and can play a buffering role through the good elasticity of the rubber pad to reduce the transmission of vibration.

[0036] Further, in order to reduce the vibration transmitted to the energy storage body 2, please refer to Figures 1 to 3The energy storage device also includes a second shock absorber (not shown), the energy storage body 2 includes a battery pack 21, the battery pack 21 includes a watch case and a battery pack, the watch case is provided with a cavity, the battery pack is fixed in the cavity, and the second shock absorber (not shown) is arranged between the outer wall of the battery pack and the inner wall of the cavity, wherein the second shock absorber (not shown) includes but is not limited to being fixed between the outer wall of the battery pack and the inner wall of the cavity by bonding, screwing, clamping or clamping. Through the above method, the vibration transmitted to the inside of the battery pack 21 can be reduced, thereby reducing the stress generated by the vibration, preventing the battery pack inside the battery pack 21 from being damaged due to the contact and friction between the vibration and the watch case, thereby avoiding affecting the normal use of the battery pack 21 and causing safety hazards.

[0037] In addition, due to the transmission of vibration, in order to reduce the impact of vibration on the entire energy storage device, the case 11 and the case of the battery pack 21 are assembled using shock-absorbing screws treated with thread glue to reduce the probability of loosening caused by vibration.

[0038] Furthermore, considering that the reliability of the energy storage device is very important during emergency use, in order to improve its heat dissipation performance and thus improve its reliability, please refer to Figures 1 to 3 The energy storage device further includes a guide member 3, which is arranged in the receiving cavity 111. The guide member 3 separates the receiving cavity 111 and forms a first chamber 1111 and a second chamber 1112. The box shell 11 is also provided with a first air inlet 112 and a first air outlet 113. The first air inlet 112, the first chamber 1111 and the first air outlet 113 are sequentially connected to form a first heat dissipation channel. The energy storage body 2 also includes a first heat dissipation fan 22. The battery pack 21 and the first heat dissipation fan 22 are arranged in the first heat dissipation channel. In addition, the box shell 11 is also provided with a second air inlet 114 and a second air outlet 115. The second air inlet 114, the second chamber 1112 and the second air outlet 115 are sequentially connected to form a second heat dissipation channel. The energy storage body 2 also includes a converter 23 and a second heat dissipation fan 24. The converter 23 and the second heat dissipation fan 24 are arranged in the second heat dissipation channel. The converter 23 is electrically connected to the battery pack 21. Through the above-mentioned manner, the battery pack 21 and the converter 23 of the energy storage device can form independent heat dissipation systems respectively. When the battery pack 21 and the converter 23, which are the main heat sources of the energy storage device, dissipate heat through the independent first heat dissipation channel and the second heat dissipation channel, the heat dissipation efficiency of the two can be improved and the mutual interference between the two in the heat dissipation process can be reduced, thereby improving the reliability of the energy storage device.

[0039] For the above-mentioned guide member 3, in some embodiments, please refer to Figure 3The guide member 3 is arranged in an arc shape or inclined, the first air inlet 112 and the second air inlet 114 are arranged on the side of the box shell 11, the first air outlet 113 and the second air outlet 115 are arranged on the top of the box shell 11, and the guide member 3 is used to guide the first air outlet 113 and the second air outlet 115 to exhaust air obliquely upward. In this way, it is possible to prevent the hot air discharged from one air outlet from entering another air outlet, thereby further improving the heat dissipation efficiency of the energy storage device.

[0040] The embodiment of the utility model includes a box body 1 and an energy storage body 2. The box body 1 includes a box shell 11, a support base 12 and a connecting assembly 13. The box shell 11 is provided with a receiving cavity 111. The support base 12 is connected to the bottom surface of the box shell 11. The connecting assembly 13 is arranged on the support base 12. The connecting assembly 13 is used to detachably fix the energy storage device to a transportation tool. The support base 12 is provided with a plug-in hole 121. The plug-in hole 121 passes through the support base 12 in a direction parallel to the bottom surface. The plug-in hole 121 is used for plugging in a transportation tool. The energy storage body 2 is arranged in the receiving cavity 111. The energy storage body 2 is used to store and output electrical energy. In the above manner, the embodiment of the utility model can not only be detachably installed and disassembled on a transportation tool, but also can be adapted for plugging and fixing the transportation tool in narrow alleys, rugged mountain roads or muddy roads where the use of transportation tools is restricted, so as to facilitate the rapid transfer of the energy storage device.

[0041] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An energy storage device, It is characterized in that include: The box body comprises a box shell, a support base and a connection assembly, wherein the box shell is provided with a receiving cavity, the support base is connected to the bottom surface of the box shell, the connection assembly is arranged on the support base, the connection assembly is used to detachably fix the energy storage device to a transportation tool, the support base is provided with a plug-in hole, the plug-in hole all penetrates the support base in a direction parallel to the bottom surface, and the plug-in hole is used for the transportation tool to be plugged in; The energy storage body is arranged in the receiving cavity, and the energy storage body is used for storing and outputting electric energy.

2. The energy storage device according to claim 1, It is characterized in that The plug-in hole includes a first plug-in hole and a second plug-in hole, the first plug-in hole penetrates the support base along a first direction, and the second plug-in hole penetrates the support base along a second direction, the first plug-in hole and the second plug-in hole are both used for the transfer tool to be plugged in, the first direction and the second direction are both parallel to the bottom surface, and the first direction and the second direction are perpendicular.

3. The energy storage device according to claim 2, It is characterized in that The support base comprises a plurality of cross bars, the plurality of cross bars are arranged at intervals along the first direction, and the gap between any two adjacent cross bars constitutes a second plug-in hole; The cross bar is provided with a through hole, and the through hole penetrates the cross bar along a first direction. The through holes of the plurality of cross bars are aligned along the first direction, and the through holes of the plurality of cross bars constitute the first plugging hole.

4. The energy storage device according to claim 3, It is characterized in that There are at least three cross bars, and the at least three cross bars are arranged at intervals to form at least two second plug holes; and / or, Each of the cross bars has at least two through holes, and the at least two through holes are spaced apart on each of the cross bars along the second direction. The through holes of the plurality of cross bars are aligned along the first direction to form at least two of the first plugging holes.

5. The energy storage device according to claim 1, It is characterized in that The number of the connecting components is two, and the two connecting components are fixed to opposite sides of the supporting base along a direction parallel to the bottom surface.

6. The energy storage device according to claim 1, It is characterized in that The connecting assembly includes a mounting plate and a screw connection member, the mounting plate includes a first mounting portion and a second mounting portion, the first mounting portion and the second mounting portion are connected and perpendicular to each other, the first mounting portion is fixed to the support base, the second mounting portion is provided with a through hole, and the screw connection member is used to pass through the through hole and then be screwed to the transportation vehicle.

7. The energy storage device according to claim 1, It is characterized in that The energy storage device further comprises a first shock absorbing member, which is arranged on a surface of the support base facing away from the box shell.

8. The energy storage device according to claim 1, It is characterized in that The energy storage device also includes a second shock absorber, the energy storage body includes a battery pack, the battery pack includes a case and a battery group, the case is provided with a cavity, the battery group is fixed in the cavity, and the second shock absorber is arranged between the outer wall of the battery pack and the inner wall of the cavity.

9. The energy storage device according to claim 8, It is characterized in that The energy storage device further includes a flow guide, which is disposed in the receiving cavity and separates the receiving cavity to form a first cavity and a second cavity; The box shell is also provided with a first air inlet and a first air outlet. The first air inlet, the first chamber and the first air outlet are connected in sequence to form a first heat dissipation channel. The energy storage body also includes a first heat dissipation fan. The battery pack and the first heat dissipation fan are arranged in the first heat dissipation channel.

10. The energy storage device according to claim 9, It is characterized in that The box shell is also provided with a second air inlet and a second air outlet, the second air inlet, the second chamber and the second air outlet are connected in sequence to form a second heat dissipation channel, the energy storage body also includes an inverter and a second heat dissipation fan, the inverter and the second heat dissipation fan are arranged in the second heat dissipation channel, and the inverter is electrically connected to the battery pack.

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