CN219499905U

CN219499905U - Emergency power supply

Info

Publication number: CN219499905U
Application number: CN202320683836.0U
Authority: CN
Inventors: 黄国军
Original assignee: Shenzhen Lehui Emergency Technology Co ltd
Current assignee: Shenzhen Lehui Emergency Technology Co ltd
Priority date: 2023-03-29
Filing date: 2023-03-29
Publication date: 2023-08-08
Anticipated expiration: 2033-03-29

Abstract

The utility model discloses an emergency power supply, which comprises a shell, a mounting bracket, a control assembly and an inverter, wherein the mounting bracket, the control assembly and the inverter are arranged in the shell; the mounting bracket comprises a top plate and side plates formed by downwards bending and extending opposite side edges of the top plate, the control assembly is fixedly connected to the outer side of the side plates, and the inverter is fixedly connected to the top surface of the top plate; a first heat dissipation channel is formed between the side wall of the shell and the side plate, a second heat dissipation channel is formed between the top wall of the shell and the top plate, heat dissipation fans are respectively arranged in the first heat dissipation channel and the second heat dissipation channel, and heat dissipation windows are correspondingly arranged on the two opposite end walls of the shell and correspond to the first heat dissipation channel and the second heat dissipation channel. The first heat dissipation channel and the second heat dissipation channel are separated in the inner space of the shell, so that the arrangement of internal devices of the emergency power supply is more reasonable, the inverter and the control assembly can be separated for heat dissipation, the heat dissipation speed is improved, and the influence of local overhigh temperature caused by heat concentration on the service performance of the emergency power supply is avoided.

Description

Emergency power supply

Technical Field

The utility model relates to the technical field of power supplies, in particular to an emergency power supply.

Background

In the current society, people can not use electricity in work and life, and once work and life lack of power supply, normal order is lost. For example, activities such as field construction, disaster recovery, rescue and the like are limited by the environment and conditions of the location, and the location may be far away from a public power grid, so that the working efficiency is greatly reduced due to the lack of commercial power supply, and even the operation cannot be performed. Under the prior art condition, field construction and disaster-fighting rescue are usually powered by an emergency power supply. Although the emergency power supply technology on the market is mature, the use is reliable and practical, the heat dissipation problem of the emergency power supply becomes an important factor affecting the quality of the power supply because the battery pack of the emergency power supply is usually large.

Disclosure of Invention

The technical problems to be solved by the utility model are as follows: the emergency power supply with the novel heat dissipation structure and the high heat dissipation effect is provided.

In order to solve the technical problems, the utility model adopts the following technical scheme: the emergency power supply comprises a shell, a mounting bracket arranged in the shell, a control assembly and an inverter; the mounting bracket comprises a top plate and side plates formed by downwards bending and extending opposite side edges of the top plate, the control assembly is fixedly connected to the outer sides of the side plates, and the inverter is fixedly connected to the top surface of the top plate; the side wall of the shell and the side plate form a first heat dissipation channel, the top wall of the shell and the top plate form a second heat dissipation channel, heat dissipation fans are respectively arranged in the first heat dissipation channel and the second heat dissipation channel, and heat dissipation windows are correspondingly arranged on the two opposite end walls of the shell and correspond to the first heat dissipation channel and the second heat dissipation channel.

Further, the power supply device further comprises a load battery, wherein a limiting space for limiting the load battery is formed by the mounting bracket and the bottom wall of the shell, and the load battery is electrically connected with the control assembly and the inverter respectively.

Further, the device also comprises a panel, wherein the shell is provided with a mounting window, the panel is connected with the shell through screws, and the panel is arranged corresponding to the mounting window and is electrically connected with the control assembly.

Further, the device also comprises a turning plate, wherein the panel is provided with a plurality of sockets, the plurality of sockets are electrically connected with the load battery, the turning plate is arranged on the panel, and the turning plate can rotate relative to the panel to open and close the sockets.

Further, the shell comprises a top cover, a chassis, two end covers and two oppositely arranged side covers; the end cover comprises end walls and bearing plates, the two end walls are oppositely arranged, the bottom ends of the two end walls are oppositely bent and extend to form bearing plates respectively, and the chassis is arranged above the two bearing plates and is connected with the two bearing plates respectively through screws; the side covers are respectively connected with the two end covers through screws; the top cover is detachably connected with the two end covers and the two side covers respectively.

Further, a positioning lug extending downwards in a protruding mode is arranged at the bottom of the side cover, and a positioning groove matched with the positioning lug is formed in the chassis.

Further, the inner wall surface of the chassis and/or the side cover is provided with reinforcing ribs.

Further, the top cover is respectively connected with the two end covers and the two side covers by screws, or the peripheral edge of the top cover is respectively buckled with the two end covers and the two side covers by clamping.

Further, a plurality of radiating fins are arranged on the outer wall surface of the shell, and the radiating window is arranged between two adjacent radiating fins.

Further, a handle is arranged at the top of the shell.

The utility model has the beneficial effects that: this emergency power source sets up the installing support in order to install fixed control subassembly and dc-to-ac converter in the shell to the installing support has separated first heat dissipation channel and second heat dissipation channel in the inner space of shell, makes emergency power source inner device arrange more rationally, makes dc-ac converter and control subassembly separate the heat dissipation, improves the radiating rate, avoids heat to concentrate and leads to local high temperature to influence emergency power source's performance.

Drawings

FIG. 1 is a schematic diagram of an emergency power supply according to a first embodiment of the present utility model;

FIG. 2 is a cross-sectional view of an emergency power supply according to a first embodiment of the present utility model;

FIG. 3 is an exploded view of a portion of an emergency power supply according to a first embodiment of the present utility model;

FIG. 4 is a second exploded view of a portion of the structure of an emergency power supply according to the first embodiment of the present utility model;

FIG. 5 is an exploded view of a portion of an emergency power supply according to an embodiment of the present utility model;

fig. 6 is an exploded view of a part of the structure of an emergency power supply according to the first embodiment of the present utility model.

Description of the reference numerals:

1. a housing; 11. a first heat dissipation channel; 12. a second heat dissipation channel;

13. a top cover; 131. a clamping hook;

14. a chassis; 141. a positioning groove; 142. reinforcing ribs;

15. an end cap; 151. an end wall; 152. a bearing plate; 153. a handle; 154. a side wall panel; 155. a heat radiation window; 156. a heat radiation fin;

16. a side cover; 161. positioning the protruding blocks; 162. a bayonet; 163. a lug;

3. a mounting bracket; 31. a top plate; 32. a side plate;

4. a control assembly;

5. an inverter;

6. a heat radiation fan;

7. a load cell;

8. a panel; 81. a socket; 82. a protruding portion;

9. and a turning plate.

Detailed Description

In order to describe the technical contents, the achieved objects and effects of the present utility model in detail, the following description will be made with reference to the embodiments in conjunction with the accompanying drawings.

Referring to fig. 1 to 6, the emergency power supply includes a housing 1, and a mounting bracket 3, a control assembly 4 and an inverter 5 disposed in the housing 1; the mounting bracket 3 comprises a top plate 31 and side plates 32 formed by downwards bending and extending opposite side edges of the top plate 31, the control assembly 4 is fixedly connected to the outer sides of the side plates 32, and the inverter 5 is fixedly connected to the top surface of the top plate 31; a first heat dissipation channel 11 is formed between the side wall of the housing 1 and the side plate 32, a second heat dissipation channel 12 is formed between the top wall of the housing 1 and the top plate 31, heat dissipation fans 6 are respectively disposed in the first heat dissipation channel 11 and the second heat dissipation channel 12, and heat dissipation windows 155 are formed on two opposite end walls 151 of the housing 1 corresponding to the first heat dissipation channel 11 and the second heat dissipation channel 12.

From the above description, the beneficial effects of the utility model are as follows: this emergency power source sets up installing support 3 in shell 1 in order to install fixed control assembly 4 and dc-to-ac converter 5 to installing support 3 has separated first heat dissipation passageway 11 and second heat dissipation passageway 12 in the inner space of shell 1, makes emergency power source internal device arrange more reasonable, makes dc-ac converter 5 and control assembly 4 get separately the heat dissipation, improves the radiating rate, avoids heat to concentrate and leads to local high temperature to influence emergency power source's performance.

Further, the power supply device further comprises a load battery 7, wherein a limiting space for limiting the load battery 7 is formed by the mounting bracket 3 and the bottom wall of the housing 1, and the load battery 7 is electrically connected with the control assembly 4 and the inverter 5 respectively.

From the above description, the -shaped mounting bracket 3 in the emergency power supply not only can provide mounting positions for the control assembly 4 and the inverter 5, but also can well limit and fix the load battery 7, so that the arrangement of internal devices of the emergency power supply is more reasonable, the overall structure of the emergency power supply is more compact, the whole volume of the emergency power supply is reduced, and the portability of the emergency power supply is improved.

Further, the portable electronic device further comprises a panel 8, wherein a mounting window is formed in the housing 1, the panel 8 is connected with the housing 1 through screws, and the panel 8 is arranged corresponding to the mounting window and is electrically connected with the control assembly 4.

From the above description, the panel 8 can facilitate the user to control the various values of the power output of the emergency power supply.

Further, the electric power generation device further comprises a turning plate 9, wherein a plurality of sockets 81 are formed in the panel 8, the plurality of sockets 81 are electrically connected with the load battery 7, the turning plate 9 is arranged on the panel 8, and the turning plate 9 can rotate relative to the panel 8 to open and close the sockets 81.

As can be seen from the above description, when the socket 81 on the panel 8 needs to be used, the socket 81 can be exposed only by lifting the flap 9; when the socket 81 is not needed, the turning plate 9 is rotated until the turning plate is close to the panel 8, so that the socket 81 can be closed, and water vapor, oil stain, dust or foreign matters and the like are prevented from entering the socket 81 to cause poor contact and even damage.

Further, the housing 1 includes a top cover 13, a bottom plate 14, two end covers 15, and two opposite side covers 16; the end cover 15 includes an end wall 151 and a supporting plate 152, the two end walls 151 are oppositely arranged, bottom ends of the two end walls 151 are oppositely bent and extended to form the supporting plates 152 respectively, and the chassis 14 is arranged above the two supporting plates 152 and is respectively connected with the two supporting plates 152 by screws; the side covers 16 are respectively connected with the two end covers 15 through screws; the top cover 13 is detachably connected with the two end covers 15 and the two side covers 16 respectively.

As can be seen from the above description, the emergency power supply can assemble the chassis 14 and part of the devices inside the emergency power supply at the assembly stage, and then each part of the housing 1 approaches the chassis 14 from all directions in sequence and is assembled, so that the compactness of the emergency power supply can be effectively improved, the dead space inside the housing 1 is reduced, and the volume and weight of the whole machine are reduced. The chassis 14 can be lifted to the carrier plate 152 of end wall 151 bottom for the screw junction of end wall 151 and chassis 14 can not lead to becoming flexible or even fracture because of bearing too big gravity load, effectively guarantees the structural stability of shell 1, prolongs this emergency power source's life.

Further, a positioning projection 161 extending downward is provided at the bottom of the side cover 16, and a positioning groove 141 matching with the positioning projection 161 is provided on the chassis 14.

As can be seen from the above description, the cooperation of the positioning projection 161 and the positioning groove 141 can limit the relative positions of the side cover 16 and the chassis 14, and further limit the relative positions of the side cover 16 and the end cover 15, so as to facilitate the screw connection between the side cover 16 and the end cover 15.

Further, reinforcing ribs 142 are provided on the inner wall surface of the chassis 14 and/or the side cover 16.

As is apparent from the above description, the reinforcing ribs 142 can further enhance the structural strength of the chassis 14 and/or the side covers 16, and improve the load-bearing capacity and the anti-collision capacity of the outer case 1.

Further, the top cover 13 is respectively connected with the two end covers 15 and the two side covers 16 by screws, or the peripheral edge of the top cover 13 is respectively buckled with the two end covers 15 and the two side covers 16 by clamping.

As can be seen from the above description, the top cover 13 is simply mounted and fixed, which is beneficial to reducing the assembly difficulty and improving the assembly efficiency.

Further, a plurality of heat dissipating fins 156 are disposed on the outer wall surface of the housing 1, and the heat dissipating window 155 is disposed between two adjacent heat dissipating fins 156.

As can be seen from the above description, the heat dissipation fins 156 can increase the area of the partial region of the outer wall surface of the housing 1 where the heat dissipation windows 155 are provided, thereby increasing the heat transfer rate to the air and preventing the outer wall surface of the housing 1 from being excessively hot and accidentally scalding the user.

Further, a handle 153 is provided at the top of the housing 1.

As can be seen from the above description, the handle 153 is used to enable a user to grasp to facilitate lifting and transporting the present emergency power supply.

Example 1

Referring to fig. 1 to 6, a first embodiment of the present utility model is as follows: the emergency power supply comprises a shell 1, a mounting bracket 3 arranged in the shell 1, a control assembly 4 and an inverter 5; the mounting bracket 3 comprises a top plate 31 and side plates 32 formed by downwards bending and extending opposite side edges of the top plate 31, the control assembly 4 is fixedly connected to the outer sides of the side plates 32, and the inverter 5 is fixedly connected to the top surface of the top plate 31; a first heat dissipation channel 11 is formed between the side wall of the shell 1 and the side plate 32, a second heat dissipation channel 12 is formed between the top wall of the shell 1 and the top plate 31, heat dissipation fans 6 are respectively arranged in the first heat dissipation channel 11 and the second heat dissipation channel 12, and heat dissipation windows 155 are formed on two opposite end walls 151 of the shell 1 corresponding to the first heat dissipation channel 11 and the second heat dissipation channel 12.

As shown in fig. 3 and 4, in the present embodiment, the housing 1 includes a top cover 13, a bottom plate 14, two end covers 15, and two oppositely disposed side covers 16; the end cover 15 comprises an end wall 151 and a bearing plate 152, the two end walls 151 are oppositely arranged, the bottom ends of the two end walls 151 are oppositely bent and extended to form the bearing plates 152 respectively, and the chassis 14 is arranged above the two bearing plates 152 and is connected with the two bearing plates 152 respectively through screws; the side covers 16 are respectively connected with the two end covers 15 through screws; the top cover 13 is detachably connected to the two end covers 15 and the two side covers 16, respectively. The whole shell 1 is in a rectangular cavity shape. The two end covers 15 are consistent in shape and size, and the two side covers 16 are consistent in shape and size, so that the design cost and the production line investment are reduced. The top of the end wall 151 of the end cap 15 extends convexly outward to form a handle 153. The carrier plate 152 is angled ninety degrees from the end wall 151. The inner wall surface of the bottom cover is provided with a plurality of first mounting holes, and the top surfaces of the two bearing plates 152 are respectively provided with a second mounting hole corresponding to the first mounting holes, so that the chassis 14 is connected with the bearing plates 152 through screws. The top edges of the two end covers 15 and the two side covers 16 are inwards bent and extended to form connecting sheets, and the connecting sheets are used for being fixedly connected with the top cover 13. It will be readily appreciated that the handle 153 at the top of the end wall 151 is used to allow a user to grasp to facilitate lifting and transport of the present emergency power supply. When the user grasps the handle 153 to lift the emergency power supply, the bearing plate 152 at the bottom of the end wall 151 lifts the chassis 14, and the screw connection part of the end wall 151 and the chassis 14 cannot loosen or even break due to bearing excessive gravity load, so that the structural stability of the shell 1 is effectively ensured, and the service life of the emergency power supply is prolonged. Further, the end cap 15 is manufactured by a gas-assisted injection molding process, and weight is reduced while the molding is satisfied.

As shown in fig. 4, in this embodiment, the end cap 15 further includes two opposite side wall plates 154, and the two side wall plates 154 are respectively connected to the end wall 151 and the support plate 152, and a partial region of the chassis 14 is disposed between the two side wall plates 154. Specifically, the side wall plate 154 has a right triangle shape or a right trapezoid shape, and the main body shape of the side cover 16 is set to an isosceles trapezoid shape due to the presence of the side wall plate 154. The two sidewall plates 154 are symmetrically disposed; the side cover 16 itself is symmetrical in structure. The side wall plate 154 is connected to the connecting piece of the end cover 15, and a reinforcing rib is further provided between the side wall plate 154 and the connecting piece of the end cover 15. The two side surfaces of the chassis 14 abut against the inner wall surfaces of the two side wall plates 154 of the end cover 15, respectively, so that the relative positions of the chassis 14 and the end cover 15 are conveniently limited. Three lugs 163 are respectively arranged at the front side edge and the rear side edge of the side cover 16, the six lugs 163 are respectively abutted against the inner wall surface of the side wall plate 154, a third mounting hole is respectively arranged on the six lugs 163, and fourth mounting holes corresponding to the third mounting holes are respectively arranged on the inner wall surfaces of the side wall plates 154 of the two end covers 15, so that the side cover 16 is connected with the end covers 15 through screws. In other embodiments, the number of the lugs 163 at the front and rear side edges of the side cover 16 may be one, two or more, respectively, and the number of the third mounting holes on the lugs 163 may be plural.

Specifically, as shown in fig. 2 and 3, the bottom cover, the side cover 16, the side plates 32 and the two side wall plates 154 enclose a first heat dissipation channel 11, a heat dissipation fan 6 is disposed in the first heat dissipation channel 11, and heat dissipation windows 155 that are communicated with the first heat dissipation channel 11 are respectively opened in the areas of the end walls 151 of the two end covers 15 corresponding to the heat dissipation fan 6. The bottom surface of the top cover 13 is recessed upward to form a receiving cavity, and a partial region of the inverter 5 is disposed in the receiving cavity. The top cover 13 and the top plate 31 of the mounting bracket 3 enclose the second heat dissipation channel 12. Two side walls of the top cover 13, which are close to the two end covers 15, are respectively provided with a heat dissipation window 155 communicated with the second heat dissipation channel 12. Two heat dissipation fans 6 are provided on one end face of the inverter 5. It is easy to understand that the control assembly 4 and the inverter 5 respectively perform ventilation and heat dissipation through the first heat dissipation channel 11 and the second heat dissipation channel 12, so that the heat dissipation speed can be effectively improved, and the influence of local overhigh temperature caused by heat concentration on the service performance of the emergency power supply is avoided.

Preferably, as shown in fig. 4, the bottom of the side cover 16 is provided with a positioning projection 161 extending downward, and the chassis 14 is provided with a positioning groove 141 matched with the positioning projection 161. Specifically, the positioning projection 161 and the side cover 16 are integrally formed as a one-piece structure. The positioning projection 161 is rectangular. The number of the positioning projections 161 is two, and the two positioning projections 161 are identical in shape and size and are symmetrically arranged relative to the side cover 16.

Optionally, the top cover 13 is respectively connected with the two end covers 15 and the two side covers 16 by screws, or the peripheral edge of the top cover 13 is respectively buckled with the two end covers 15 and the two side covers 16 in a clamping manner. As shown in fig. 5, in the embodiment, a plurality of protruding hooks 131 are provided at intervals on the edge of the bottom surface of the top cover 13, bayonets 162 are provided on the connecting pieces of the top of the two end covers 15 and the two side covers 16 corresponding to the hooks 131, and the hooks 131 on the top cover 13 are aligned with the bayonets 162 of the two end covers 15 and the two side covers 16 and clamped in, so that the top cover 13 can be installed and fixed.

Preferably, as shown in fig. 4, the inner wall surface of the chassis 14 and/or the side cover 16 is provided with reinforcing ribs 142. In this embodiment, the reinforcing ribs 142 disposed on the chassis 14 are in a grid shape, and include a plurality of transverse bars and a plurality of vertical bars, where the connection between the transverse bars and the vertical bars is provided with a cylindrical connecting column, and the connecting column is provided with a second mounting hole and a sixth mounting hole. The reinforcing ribs 142 provided on the side cover 16 are honeycomb-shaped.

Preferably, as shown in fig. 2 and 3, the emergency power supply further includes a load battery 7, the mounting bracket 3 and the bottom wall of the housing 1 enclose a limiting space for limiting the load battery 7, and the load battery 7 is electrically connected with the control assembly 4 and the inverter 5 respectively. Specifically, the top plate 31 and the two side plates 32 are formed by bending the same metal plate, and an included angle between the side plate 32 and the top plate 31 is a right angle. The end of the side plate 32 far away from the top plate 31 is bent outwards to form a connecting part, a fifth mounting hole is formed in the connecting part, and a sixth mounting hole corresponding to the fifth mounting hole is formed in the chassis 14, so that the mounting bracket 3 can be fixedly mounted on the chassis 14 through screws.

Preferably, as shown in fig. 1 and 6, the emergency power supply further includes a panel 8, a mounting window is formed on the housing 1, the panel 8 is connected with the housing 1 by a screw, and the panel 8 is disposed corresponding to the mounting window and is electrically connected with the control assembly 4. In particular, the panel 8 is adapted to the shape of the window. A panel 8 is provided on each of the two end walls 151, and a display screen and/or a plurality of sockets 81 are provided on the panel 8. An annular projection 82 is provided on the inner side of the outer peripheral surface of the panel 8, and the projection 82 abuts against the inner wall surface of the end wall 151 to limit the relative positions of the panel 8 and the end cap 15. The protruding portion 82 is provided with a plurality of seventh mounting holes, and the end wall 151 is provided with eighth mounting holes corresponding to the seventh mounting holes, so that the panel 8 is fixedly mounted on the end wall 151 by screws. It will be readily appreciated that the panel 8 may be replaced to customize different functions according to the needs of the user, reducing customization costs.

Preferably, as shown in fig. 1, the emergency power supply further includes a turning plate 9, the panel 8 is provided with a plurality of sockets 81, the plurality of sockets 81 are electrically connected with the load battery 7, the turning plate 9 is disposed on the panel 8, and the turning plate 9 can rotate relative to the panel 8 to open and close the sockets 81. Specifically, two sides of the turning plate 9 are respectively provided with a convex cylindrical clamping block, the central axes of the two clamping blocks are arranged in a collinear manner, and the panel 8 is provided with clamping holes matched with the clamping blocks, so that the turning plate 9 can be rotatably arranged on the panel 8. The panel 8 is provided with a groove for accommodating the turning plate 9, and the bottom surface of the groove is provided with a socket 81. It will be readily appreciated that the recess prevents the flap 9 from protruding beyond the surface of the panel 8 after closure, thereby reducing the risk of the flap 9 being accidentally lifted to expose the socket 81.

Preferably, as shown in fig. 1, a plurality of heat dissipation fins 156 are provided on the end wall 151 of the housing 1, and a heat dissipation window 155 is provided between two adjacent heat dissipation fins 156.

In summary, the emergency power supply provided by the utility model has the advantages that the mounting bracket is arranged in the shell to mount and fix the control component and the inverter, and the first heat dissipation channel and the second heat dissipation channel are separated by the mounting bracket in the inner space of the shell, so that the arrangement of internal devices of the emergency power supply is more reasonable, the inverter and the control component can be separated for heat dissipation, the heat dissipation speed is improved, and the influence of local overhigh temperature caused by heat concentration on the service performance of the emergency power supply is avoided.

The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent changes made by the specification and drawings of the present utility model, or direct or indirect application in the relevant art, are included in the scope of the present utility model.

Claims

1. Emergency power supply, its characterized in that: the power supply comprises a shell, a mounting bracket arranged in the shell, a control assembly and an inverter; the mounting bracket comprises a top plate and side plates formed by downwards bending and extending opposite side edges of the top plate, the control assembly is fixedly connected to the outer sides of the side plates, and the inverter is fixedly connected to the top surface of the top plate; the side wall of the shell and the side plate form a first heat dissipation channel, the top wall of the shell and the top plate form a second heat dissipation channel, heat dissipation fans are respectively arranged in the first heat dissipation channel and the second heat dissipation channel, and heat dissipation windows are correspondingly arranged on the two opposite end walls of the shell and correspond to the first heat dissipation channel and the second heat dissipation channel.

2. The emergency power supply of claim 1, wherein: the load battery is electrically connected with the control assembly and the inverter respectively.

3. The emergency power supply of claim 2, wherein: the device comprises a shell, and is characterized by further comprising a panel, wherein the shell is provided with a mounting window, the panel is connected with the shell through screws, and the panel is arranged corresponding to the mounting window and is electrically connected with the control assembly.

4. An emergency power supply according to claim 3, wherein: the power supply device comprises a panel, and is characterized by further comprising a turning plate, wherein a plurality of sockets are arranged on the panel, the plurality of sockets are electrically connected with the load battery, the turning plate is arranged on the panel, and the turning plate can rotate relative to the panel to open and close the sockets.

5. The emergency power supply of claim 1, wherein: the shell comprises a top cover, a chassis, two end covers and two oppositely arranged side covers; the end cover comprises end walls and bearing plates, the two end walls are oppositely arranged, the bottom ends of the two end walls are oppositely bent and extend to form bearing plates respectively, and the chassis is arranged above the two bearing plates and is connected with the two bearing plates respectively through screws; the side covers are respectively connected with the two end covers through screws; the top cover is detachably connected with the two end covers and the two side covers respectively.

6. The emergency power supply of claim 5, wherein: the bottom of the side cover is provided with a positioning lug which protrudes downwards and extends, and the chassis is provided with a positioning groove matched with the positioning lug.

7. The emergency power supply of claim 5, wherein: reinforcing ribs are arranged on the inner wall surface of the chassis and/or the side cover.

8. The emergency power supply of claim 5, wherein: the top cover is respectively connected with the two end covers and the two side covers through screws, or the peripheral edge of the top cover is respectively buckled with the two end covers and the two side covers through clamping.

9. The emergency power supply of claim 1, wherein: the outer wall surface of the shell is provided with a plurality of radiating fins, and the radiating window is arranged between two adjacent radiating fins.

10. The emergency power supply of claim 1, wherein: the top of the shell is provided with a handle.