Overhead battery compartment of pure electric bus

Abstract

The utility model discloses an overhead battery compartment of a pure electric bus, which comprises a compartment body and a bay eave, and the compartment body is mounted at the top of the bus; the bay eave is connected to the top of the passenger car, the bay eave is located on the peripheral side of the cabin body, and a wiring channel for cables to penetrate through is formed in the bay eave. The cabin body is installed on the top of the passenger car, the sufficient space of the top of the passenger car is fully utilized, the cabin body is protected against collision, and the cabin body is prevented from being damaged. The protection effect on the cabin body is further improved through the bay eaves, installation of related circuits is facilitated through the wiring channels, and safety is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of technology, specifically relates to a kind of pure electric bus roof-mounted battery cabin. BACKGROUND

[0002] With the increasing environmental protection requirements and the development of new energy technology, pure electric vehicles are widely used in public transportation. As one of the core components of pure electric vehicles, the working performance of power battery directly determines the power output and range of electric vehicles.

[0003] The Chinese invention with publication number CN110039983A proposes a natural ventilation cooling structure of electric bus battery box, including vehicle body, the tail of vehicle body is provided with battery cabin, the rear side of battery cabin is provided with rear wall, the left and right sides of battery cabin are provided with air inlet, the upper part of rear wall is provided with left and right two air outlets, the vertical direction is provided with partition plate in battery cabin, and battery cabin is divided into left and right two cooling chambers by partition plate, and passenger car high-voltage battery is divided into two groups and is installed in left and right two cooling chambers.

[0004] For the related technology in the above, the following defects exist: the battery cabin is arranged at the tail of the vehicle body, which increases the length of the vehicle body, and the battery cabin is easily damaged when the vehicle body is knocked, in addition, the tail of the vehicle body is limited in area, which is not conducive to the installation of battery cabin and related lines. UTILITY MODEL CONTENT

[0005] The utility model aims at overcoming the above technical deficiencies, and proposes a pure electric bus roof-mounted battery cabin, which solves the technical problems of limited space, inconvenient installation and easy collision of the battery cabin arranged at the tail of the vehicle body in the prior art.

[0006] To achieve the above technical purpose, the technical scheme of the utility model provides a pure electric bus roof-mounted battery cabin, which comprises a cabin body, the cabin body is installed on the top of the bus, and the cabin body comprises a main cover, an end cover and a side cover.

[0007] The eaves are connected to the top of the bus, the eaves are located on the side of the cabin body, and the eaves are formed with a cable channel for cable passing.

[0008] In some embodiments, the cabin body comprises a main cover on the upper and lower sides, an end cover on the front and rear sides, and a side cover on the left and right sides, the main cover comprises a main skeleton and a main cover plate, and the main cover plate is connected to the side of the main skeleton away from the battery.

[0009] In some embodiments, the side cover comprises a front end side cover plate, a front side cover plate, a middle end side cover plate, a rear side cover plate and a rear end side cover plate arranged in sequence along the length direction of the passenger car, and the front end side cover plate, the front side cover plate, the middle end side cover plate, the rear side cover plate and the rear end side cover plate are all capable of sliding in the eaves along the length direction of the passenger car, so that the front end side cover plate and the rear end side cover plate are respectively aligned with the edges of the two end covers.

[0010] In some embodiments, the cabin further comprises a pre-tightening assembly, the pre-tightening assembly comprises a side connecting plate, a first bolt, a first nut, a second bolt and a second nut, one side of the side connecting plate abuts against the main frame, the other side of the side connecting plate abuts against the side cover, the first bolt is arranged on the side connecting plate and the main frame, the first nut is threadedly connected to the end of the first bolt, the first nut abuts against the side of the side connecting plate away from the main frame, the second bolt is arranged on the side connecting plate, the side cover is provided with a strip-shaped hole extending along the length direction of the passenger car, the second bolt passes through the strip-shaped hole, and the second nut is threadedly connected to the end of the second bolt, the second nut abuts against the side of the side connecting plate away from the side cover.

[0011] In some embodiments, the cabin further comprises an upper sealing strip and a lower sealing strip, the upper sealing strip is arranged between the side cover and the main cover plate located at the top, the side cover and the main cover plate located at the top abut against the two sides of the upper sealing strip respectively, and the lower sealing strip is arranged between the side cover and the main frame located at the bottom, the side cover and the main frame located at the bottom abut against the two sides of the lower sealing strip respectively.

[0012] In some embodiments, the upper sealing strip is provided with a first engagement groove, a second engagement groove and a third engagement groove in sequence along the height direction of the upper sealing strip, the side edge of the main cover plate located at the top is located in the first engagement groove, the side edge of the eaves is located in the second engagement groove, and the top side of the side cover is located in the third engagement groove.

[0013] In some embodiments, the lower sealing strip is provided with a fourth engagement groove, and the bottom side of the side cover is located in the fourth engagement groove.

[0014] In some embodiments, the cabin is arranged at the top rear side of the passenger car, the eaves comprises a front eave body, a front fastening assembly and a rear eave body, the front eave body is arranged at the top front side of the passenger car, the rear eave body is arranged at the top rear side of the passenger car, the front eave body is connected to the passenger car through the front fastening assembly, and the second bolt is arranged on the rear eave body so as to fix the rear eave body to the side connecting plate.

[0015] In some embodiments, the front fastening assembly comprises a first connecting rod, a first connecting plate, a third bolt, a third nut, a fourth bolt and a fourth nut, one end of the first connecting rod is connected to the passenger car, one side of the first connecting plate abuts to one end of the first connecting rod away from the passenger car, the other side of the first connecting plate abuts to the front eave body, the third bolt is arranged on the first connecting plate and the first connecting rod, the third nut is threadedly connected to the third bolt, the third nut abuts to one side of the first connecting plate away from the first connecting rod, the fourth bolt is arranged on the first connecting plate and the front eave body, and the fourth nut is threadedly connected to the end of the fourth bolt and abuts to one side of the first connecting plate away from the front eave body.

[0016] In some embodiments, the first bolt is sleeved with a first gasket, the first nut abuts to the first gasket, the second bolt is sleeved with a second gasket, the second nut abuts to the second gasket, the third bolt is sleeved with a third gasket, the third nut abuts to the third gasket, the fourth bolt is sleeved with a fourth gasket, and the fourth nut abuts to the fourth gasket.

[0017] Compared with the prior art, the beneficial effects of the utility model include: the cabin body is installed on the top of the passenger car, the abundant space on the top of the passenger car is fully utilized, the cabin body is protected from collision, the eave further improves the protection effect on the cabin body, the wiring channel facilitates the installation of related lines, and the safety is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is the first perspective overall structure schematic view of the passenger car and the cabin body provided by the utility model;

[0019] Figure 2 is the first perspective overall structure schematic view of the passenger car and the cabin body provided by the utility model; Figure 1 is the enlarged view of the local structure at A in the figure;

[0020] Figure 3 is the second perspective overall structure schematic view of the passenger car and the cabin body provided by the utility model;

[0021] Figure 4 is the second perspective overall structure schematic view of the passenger car and the cabin body provided by the utility model; Figure 3 is the enlarged view of the local structure at B in the figure;

[0022] Figure 5 is the first perspective overall structure schematic view of the cabin body provided by the utility model;

[0023] Figure 6 is the second perspective overall structure schematic view of the cabin body provided by the utility model;

[0024] Figure 7 is the second perspective overall structure schematic view of the cabin body provided by the utility model; Figure 6 is the enlarged view of the local structure at C in the figure.

[0025] Reference signs:

[0026] 1, passenger car; 2, cabin; 21, main cover; 211, main skeleton; 212, main cover plate; 22, end cover; 23, side cover; 231, front end side cover plate; 232, front side cover plate; 233, middle end side cover plate; 234, rear side cover plate; 235, rear end side cover plate; 24, pre-tightening assembly; 241, side connecting plate; 242, first bolt; 243, first nut; 244, second bolt; 245, second nut; 246, strip-shaped hole; 247, first gasket; 248, second gasket; 25, upper sealing strip; 251, first engagement groove; 252, second engagement groove; 253, third engagement groove; 26, lower sealing strip; 261, fourth engagement groove; 3, eave; 31, front eave body; 32, front fastening assembly; 321, first connecting rod; 322, first connecting plate; 323, third bolt; 324, third nut; 325, fourth bolt; 326, fourth nut; 327, third gasket; 328, fourth gasket; 33, rear eave body; 34, cable passage. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will be further described in detail in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model, and are not used to limit the utility model.

[0028] The utility model provides a kind of pure electric bus top-mounted battery cabin, its structure as shown in Figure 1 - Figure 7 Fig. 1, including cabin 2 and eave 3.

[0029] The cabin 2 is installed on the top of the passenger car 1.

[0030] The eave 3 is connected to the top of the passenger car 1, and the eave 3 is located on the side of the cabin 2, and the eave 3 is formed with a cable passage 34 for the cable to pass through.

[0031] In use, the cabin 2 is installed on the top of the passenger car 1, and the inside is used to store battery pack. The battery pack is used as the power source of the pure electric bus 1, and provides power for the drive motor, vehicle-mounted equipment and the like of the vehicle. During the driving of the passenger car 1, the battery in the cabin 2 converts chemical energy into electrical energy output, ensuring the normal operation of the passenger car 1. The eave 3 is connected to the top of the passenger car 1 and located on the side of the cabin 2 and abuts against the side wall thereof. Its main role is that when encountering external pollutants such as rainwater and dust during the driving of the passenger car 1, the eave 3 can play a shielding role. The eave 3 is designed by itself, changes the motion trajectory of rainwater, dust and the like, so that it will not directly fall on the cabin 2, and reduces the erosion of external pollutants to the cabin 2.

[0032] The cabin body 2 is installed on the top of the passenger car 1, the sufficient space on the top of the passenger car 1 is fully utilized, the cabin body 2 is protected from collision, the cornice 3 further improves the protection effect on the cabin body 2, the wiring channel 34 facilitates installation of related lines, and safety is improved.

[0033] In order to protect the battery, please refer to Figure 1 In a preferred embodiment, the cabin body 2 comprises main covers 21 arranged on upper and lower sides, end covers 22 arranged on front and rear sides, and side covers 23 arranged on left and right sides, the main cover 21 comprises a main skeleton 211 and a main cover plate 212, and the main cover plate 212 is connected to the side of the main skeleton 211 away from the battery.

[0034] In use, the cabin body 2 adopts a combined structure composed of the main cover 21, the end cover 22 and the side cover 23, and each part cooperates with each other to realize omnibearing wrapping and protection of the battery. The main skeleton 211, as the core support structure of the main cover 21, is made of metal with certain strength and rigidity. It builds the basic framework of the main cover 21 and provides stable support for the top of the whole cabin body 2, so that the main cover 21 can maintain its shape and structural integrity even if subjected to various external forces during driving of the passenger car 1, and damage to the battery caused by deformation is prevented.

[0035] In order to facilitate installation, please refer to Figure 5 In a preferred embodiment, the side cover 23 comprises front end side cover plates 231, front side cover plates 232, middle end side cover plates 233, rear side cover plates 234 and rear end side cover plates 235 arranged in sequence along the length direction of the passenger car 1, and the front end side cover plates 231, the front side cover plates 232, the middle end side cover plates 233, the rear side cover plates 234 and the rear end side cover plates 235 can slide in the cornice 3 along the length direction of the passenger car 1, so that the front end side cover plates 231 and the rear end side cover plates 235 are respectively aligned with the edges of the two end covers 22.

[0036] In use, the front end side cover plate 231, the front side cover plate 232, the middle end side cover plate 233, the rear side cover plate 234 and the rear end side cover plate 235 can slide in the eaves 3 along the length direction of the passenger car 1, allowing the side cover 23 of the cabin 2 to be flexibly adjusted according to actual needs. During the installation of the cabin 2, due to the possible differences in size of different models of batteries, through this slidable manner, the various side cover plates can be matched with each other to adapt to batteries of different lengths, ensuring that the cabin 2 can tightly wrap the battery to provide stable protection and support. In addition, the integrity and sealing of the overall structure of the cabin 2 are ensured. When the cabin 2 needs to be maintained or part of the components needs to be replaced, the slidable side cover plate design provides convenience. It is not necessary to disassemble the entire cabin 2, but only to slide the corresponding side cover plate according to the needs, so as to expose a specific area inside the cabin 2, facilitating the operation of the maintenance personnel.

[0037] For the convenience of adjusting the side connecting plate 241, please refer to Figure 4 In a preferred embodiment, the cabin 2 further comprises a pre-tightening assembly 24, the pre-tightening assembly 24 comprising a side connecting plate 241, a first bolt 242, a first nut 243, a second bolt 244 and a second nut 245, one side of the side connecting plate 241 abutting against the main framework 211, the other side of the side connecting plate 241 abutting against the side cover 23, the first bolt 242 penetrating the side connecting plate 241 and the main framework 211, the first nut 243 being threadedly connected to the end of the first bolt 242, the first nut 243 abutting against the side of the side connecting plate 241 away from the main framework 211, the second bolt 244 penetrating the side connecting plate 241, the side cover 23 being provided with a strip-shaped hole 246 extending along the length direction of the passenger car 1, the second bolt 244 penetrating the strip-shaped hole 246, and the second nut 245 being threadedly connected to the end of the second bolt 244, the second nut 245 abutting against the side of the side connecting plate 241 away from the side cover 23.

[0038] In use, the side connecting plate 241 serves as an intermediate component connecting the main skeleton 211 and the side cover 23, and abuts against the main skeleton 211 and the side cover 23 on both sides, thereby providing a basic positioning and connecting support point for the entire pre-tightening assembly 24. The first bolt 242 is arranged through the side connecting plate 241 and the main skeleton 211, and the first nut 243 is threadedly connected to the end of the first bolt 242 and abuts against one side of the side connecting plate 241 away from the main skeleton 211. When the first nut 243 is tightened, the first nut 243 exerts a pulling force on the first bolt 242, so that the side connecting plate 241 is tightly pressed against the main skeleton 211, thereby firmly connecting the side connecting plate 241 and the main skeleton 211 together. The second bolt 244 is arranged through the side connecting plate 241 and passes through the strip-shaped hole 246 extending in the length direction of the passenger car 1 on the side cover 23, and the second nut 245 is threadedly connected to the end of the second bolt 244 and abuts against one side of the side connecting plate 241 away from the side cover 23. By tightening the second nut 245, the second nut 245 exerts a pulling force on the second bolt 244, so that the side connecting plate 241 can tightly pull the side cover 23, thereby achieving a tight connection between the main skeleton 211, the side connecting plate 241 and the side cover 23. The strip-shaped hole 246 provided on the side cover 23 extends in the length direction of the passenger car 1, which provides an adjustable space for the second bolt 244. Since the side cover 23 of the cabin 2 may need to be adjusted according to different installation conditions or battery specifications, when the position of the side cover 23 needs to be adjusted, the second nut 245 can be loosened, so that the second bolt 244 slides in the strip-shaped hole 246 along the length direction of the passenger car 1, thereby changing the position of the side cover 23 relative to the side connecting plate 241 and the main skeleton 211. After adjusting to the appropriate position, the second nut 245 is tightened again to fix the side cover 23 in the new position, thereby achieving flexible adjustment of the position of the side cover 23 to better adapt to the installation and use requirements of the cabin 2.

[0039] In order to improve the sealing performance of the cabin 2, please refer to Figure 6 In a preferred embodiment, the cabin 2 further comprises an upper sealing strip 25 and a lower sealing strip 26. The upper sealing strip 25 is arranged between the side cover 23 and the top main cover plate 212, and the side cover 23 and the top main cover plate 212 abut against both sides of the upper sealing strip 25, respectively. The lower sealing strip 26 is arranged between the side cover 23 and the bottom main skeleton 211, and the side cover 23 and the bottom main skeleton 211 abut against both sides of the lower sealing strip 26, respectively.

[0040] In use, first, the upper sealing strip 25 is located between the side cover 23 and the top main cover plate 212. When the side cover 23 and the main cover plate 212 abut on both sides of the upper sealing strip 25, the upper sealing strip 25 will be compressed to fill the gap between them. In this way, it can effectively block dust, rain, snow and other external impurities from entering the cabin 2 from the intersection of the top and side of the cabin 2. The lower sealing strip 26 is arranged between the side cover 23 and the bottom main skeleton 211, and after being compressed in the same way, it seals the gap between the side cover 23 and the main skeleton 211, preventing dust, mud and other ground impurities from entering the cabin through the joint of the bottom and side of the cabin 2. Secondly, the passenger car 1 will vibrate during driving, and the cabin 2 will also vibrate. The upper sealing strip 25 and the lower sealing strip 26 have a certain elasticity and can act as a buffer between the side cover 23 and the main cover plate 212 and the main skeleton 211. They can absorb and disperse part of the vibration energy, reduce the transmission of vibration between the parts of the cabin 2, and reduce the wear of the parts caused by vibration.

[0041] In order to improve the sealing between the side cover 23 and the main cover plate 212 located at the top, please refer to Figure 7 In a preferred embodiment, the upper sealing strip 25 is provided with a first engagement groove 251, a second engagement groove 252 and a third engagement groove 253 in sequence along the height direction of the upper sealing strip 25. The side edge of the main cover plate 212 located at the top is located in the first engagement groove 251, the side edge of the cornice 3 is located in the second engagement groove 252, and the top side of the side cover 23 is located in the third engagement groove 253.

[0042] In use, the side edge of the main cover plate 212 is located in the first engagement groove 251. When the main cover plate 212 is installed in place, the groove wall of the first engagement groove 251 will tightly wrap around the side edge of the main cover plate 212, forming the first sealing line. The side edge of the cornice 3 is located in the second engagement groove 252. Similarly, the second engagement groove 252 will tightly wrap around the side edge of the cornice 3, and a third sealing barrier is added between the main cover plate 212 and the cornice 3. The top side of the side cover 23 is located in the third engagement groove 253, and the tight combination of the third engagement groove 253 and the top side of the side cover 23 forms the third sealing line between the side cover 23 and the upper sealing strip 25.

[0043] In order to improve the sealing between the side cover 23 and the main skeleton 211 located at the bottom, please refer to Figure 7 In a preferred embodiment, the lower sealing strip 26 is provided with a fourth engagement groove 261, and the bottom side of the side cover 23 is located in the fourth engagement groove 261.

[0044] In use, the bottom side of the side cover 23 is located in the fourth engagement groove 261, and the groove wall of the fourth engagement groove 261 tightly abuts the bottom side of the side cover 23, so that an effective sealing barrier is formed between the side cover 23 and the bottom main framework 211. External impurities such as dust, soil, and rainwater can be prevented from entering the cabin 2 from the gap between the bottom side of the side cover 23 and the main framework 211, thereby ensuring the cleanliness of the cabin 2.

[0045] To install the cornice 3 on the bus 1, please refer to Figure 1 In a preferred embodiment, the cabin 2 is arranged at the rear top side of the bus 1, the cornice 3 includes a front cornice body 31, a front fastening assembly 32, and a rear cornice body, the front cornice body 31 is arranged at the front top side of the bus 1, the rear cornice body is arranged at the rear top side of the bus 1, the front cornice body 31 is connected to the bus 1 through the front fastening assembly 32, and the second bolt 244 is arranged in the rear cornice body to fix the rear cornice body to the side connecting plate 241.

[0046] In use, the front cornice body 31 is connected to the bus 1 through the front fastening assembly 32, and the front fastening assembly 32 provides reliable connection force to firmly fix the front cornice body 31 at the front top side of the bus 1. It is ensured that the front cornice body 31 will not loosen or shift during vehicle driving due to factors such as vibration and air flow. The rear cornice body is connected to the side connecting plate 241 through the second bolt 244. Since the rear cornice body is in contact with the cabin 2, on the one hand, the rear cornice body is fixed at a proper position, and on the other hand, the cabin 2 is connected to the main structure of the bus 1, so that the cabin 2 can be stably installed at the rear top side of the bus 1.

[0047] To install the front cornice body 31 on the bus 1, please refer to Figure 2 In a preferred embodiment, the front fastening assembly 32 includes a first connecting rod 321, a first connecting plate 322, a third bolt 323, a third nut 324, a fourth bolt 325, and a fourth nut 326. One end of the first connecting rod 321 is connected to the bus 1. One side of the first connecting plate 322 abuts the end of the first connecting rod 321 away from the bus 1. The other side of the first connecting plate 322 abuts the front cornice body 31. The third bolt 323 is arranged in the first connecting plate 322 and the first connecting rod 321. The third nut 324 is threadedly connected to the third bolt 323 and abuts the side of the first connecting plate 322 away from the first connecting rod 321. The fourth bolt 325 is arranged in the first connecting plate 322 and the front cornice body 31. The fourth nut 326 is threadedly connected to the end of the fourth bolt 325 and abuts the side of the first connecting plate 322 away from the front cornice body 31.

[0048] In use, the third bolt 323 is arranged on the first connecting plate 322 and the first connecting rod 321, and the third nut 324 is screwed on the third bolt 323 and abuts against one side of the first connecting plate 322 away from the first connecting rod 321. When the third nut 324 is tightened, the third nut 324 rotates on the third bolt 323 and generates an axial force, which tightly presses the first connecting plate 322 against the first connecting rod 321, so that a tight connection is formed between the first connecting plate 322 and the first connecting rod 321. The fourth bolt 325 is arranged on the first connecting plate 322 and the front eave body 31, and the fourth nut 326 is screwed on the end of the fourth bolt 325 and abuts against one side of the first connecting plate 322 away from the front eave body 31. Similarly, when the fourth nut 326 is tightened, a force is generated to tightly connect the first connecting plate 322 and the front eave body 31, so that the front eave body 31 is stably connected with the first connecting plate 322 and the first connecting rod 321, and the mounting stability of the front eave body 31 on the front side of the top of the bus 1 is ensured.

[0049] In order to improve the stability of the connection of the first bolt 242, the second bolt 244, the third bolt 323 and the fourth bolt 325, please refer to Figure 4 In a preferred embodiment, the first bolt 242 is sleeved with a first gasket 247, the first nut 243 abuts against the first gasket 247, the second bolt 244 is sleeved with a second gasket 248, the second nut 245 abuts against the second gasket 248, the third bolt 323 is sleeved with a third gasket 327, the third nut 324 abuts against the third gasket 327, and the fourth bolt 325 is sleeved with a fourth gasket 328, and the fourth nut 326 abuts against the fourth gasket 328.

[0050] In use, the first bolt 242 is sleeved with a first gasket 247, and the first nut 243 abuts against the first gasket 247. When the first nut 243 is tightened, the pressure exerted by the first nut 243 is evenly distributed on the surface of the connected components through the first gasket 247. The pressure per unit area is reduced, the component surface is protected, and the service life of the component is prolonged. The gaskets on the second, third and fourth bolts also have the same effect, respectively evenly dispersing the pressure exerted by the second, third and fourth nuts to the surfaces of the corresponding connected components, ensuring that the pressure is evenly distributed at each connection site, and improving the reliability and stability of the connection.

[0051] In order to better understand the present application, the following will be combined with Figure 1 - Figure 7The technical scheme of the utility model discloses a kind of working principles of top-mounted battery cabin of pure electric bus: cabin body 2 is installed on the top of passenger car 1, inside is used to store battery pack.Battery pack is as the power source of pure electric bus 1, provides power for the drive motor of vehicle, vehicle-mounted equipment etc.Electricity is output by the chemical energy conversion of battery in cabin body 2 during the running of passenger car 1, ensure the normal operation of passenger car 1.Eaves 3 is connected in the top of passenger car 1 and located in the side of cabin body 2 and abuts to its side wall.Its main role is in the running of passenger car 1, when encountering rain, dust and other external pollutants, eaves 3 can play the role of shelter.Eaves 3 changes the movement track of rain, dust and the like by its structural design, so that it will not directly fall on cabin body 2, reduce the erosion of external pollutants to cabin body 2.

[0052] The above-described specific embodiment of the utility model does not constitute a limitation on the scope of protection of the utility model. Any various other corresponding changes and modifications made in accordance with the technical concept of the utility model shall be included within the scope of protection of the claims of the utility model.

Claims

1. A roof-top battery compartment for a pure electric bus, characterized in that, The utility model relates to a kind of battery compartment and eave for passenger car, including: Cabin, the cabin is installed on the top of passenger car; And, Eave, the eave is connected to the top of passenger car, the eave is located in the circumferential side of cabin, and the eave is formed with the cable passing through the wiring channel.

2. The rooftop battery pack for a pure electric bus of claim 1, wherein, The cabin includes the main cover located on the upper and lower sides, the end cover located on the front and rear sides, and the side cover located on the left and right sides, the main cover includes the main skeleton and the main cover plate, and the main cover plate is connected to the side of the main skeleton away from the battery.

3. The rooftop battery pack for a pure electric bus of claim 2, wherein, The side cover includes front end side cover plate, front side cover plate, middle end side cover plate, rear side cover plate and rear end side cover plate arranged in sequence along the length direction of passenger car, and the front end side cover plate, the front side cover plate, the middle end side cover plate, the rear side cover plate and the rear end side cover plate can slide in the eave along the length direction of passenger car, so that the front end side cover plate and the rear end side cover plate are aligned with the edges of the two end covers respectively.

4. The rooftop battery pack for a pure electric bus of claim 2, wherein, The cabin further includes a pre-tightening assembly, the pre-tightening assembly includes a side connecting plate, a first bolt, a first nut, a second bolt and a second nut, one side of the side connecting plate abuts on the main skeleton, the other side of the side connecting plate abuts on the side cover, the first bolt is provided through the side connecting plate and the main skeleton, the first nut is threadedly connected to the end of the first bolt, the first nut abuts on the side of the side connecting plate away from the main skeleton, the second bolt is provided through the side connecting plate, the side cover is provided with a strip-shaped hole extending along the length direction of the passenger car, the second bolt passes through the strip-shaped hole, and the second nut is threadedly connected to the end of the second bolt, and the second nut abuts on the side of the side connecting plate away from the side cover.

5. The rooftop battery pack for a pure electric bus of claim 2, wherein, The cabin further includes an upper sealing strip and a lower sealing strip, the upper sealing strip is arranged between the side cover and the main cover plate located on the top, and the side cover and the main cover plate located on the top abut on the two sides of the upper sealing strip respectively, the lower sealing strip is arranged between the side cover and the main skeleton located on the bottom, and the side cover and the main skeleton located on the bottom abut on the two sides of the lower sealing strip respectively.

6. The rooftop battery pack for a pure electric bus of claim 5, wherein, The upper sealing strip is provided with a first engagement groove, a second engagement groove and a third engagement groove in sequence along the height direction of the upper sealing strip, the side edge of the main cover plate located on the top is located in the first engagement groove, the side edge of the eave is located in the second engagement groove, and the top side of the side cover is located in the third engagement groove.

7. The rooftop battery pack for a pure electric bus of claim 5, wherein, The lower sealing strip is provided with a fourth engagement groove, and the bottom side of the side cover is located in the fourth engagement groove.

8. The rooftop battery pack for a pure electric bus of claim 4, wherein, The cabin is arranged on the rear side of the top of the passenger car, the eave includes a front eave body, a front fastening assembly and a rear eave body, the front eave body is arranged on the front side of the top of the passenger car, the rear eave body is arranged on the rear side of the top of the passenger car, the front eave body is connected to the passenger car through the front fastening assembly, the second bolt is provided through the rear eave body, so that the rear eave body is fixed on the side connecting plate.

9. The rooftop battery pack for a pure electric bus of claim 8, wherein, The front fastening assembly comprises a first connecting rod, a first connecting plate, a third bolt, a third nut, a fourth bolt and a fourth nut, one end of the first connecting rod is connected to the passenger car, one side of the first connecting plate abuts against one end of the first connecting rod away from the passenger car, the other side of the first connecting plate abuts against the front eave body, the third bolt is arranged on the first connecting plate and the first connecting rod, the third nut is threadedly connected to the third bolt, the third nut abuts against one side of the first connecting plate away from the first connecting rod, the fourth bolt is arranged on the first connecting plate and the front eave body, the fourth nut is threadedly connected to the end of the fourth bolt, and the fourth nut abuts against one side of the first connecting plate away from the front eave body.

10. The rooftop battery pack for a pure electric bus of claim 9, wherein, The first bolt is sleeved with a first gasket, the first nut abuts against the first gasket, the second bolt is sleeved with a second gasket, the second nut abuts against the second gasket, the third bolt is sleeved with a third gasket, the third nut abuts against the third gasket, the fourth bolt is sleeved with a fourth gasket, and the fourth nut abuts against the fourth gasket.

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