New energy bulk feed truck

Abstract

The utility model relates to an electric automobile, and discloses a new energy bulk feed truck which comprises a chassis, a feed tank and a discharging auger are installed on the chassis, the new energy bulk feed truck further comprises a power system, the power system comprises a battery pack, an electric drive bridge and a high-voltage box, the battery pack, the electric drive bridge and the high-voltage box are electrically connected, and the battery pack comprises a battery pack outer shell. The battery pack outer shell comprises a battery pack frame and a metal plate skin arranged outside the battery pack frame, the high-voltage box comprises a box body, the metal plate skin and the box body are both made of weathering resistant steel, and paint spraying coatings are arranged on the outer surfaces of the feed tank, the metal plate skin and the box body. The utility model not only retains the advantages of the fuel oil bulk feed truck, but also abandons the defects of high energy consumption and high pollution, adopts the battery as a power source, drives the truck to run through the motor, realizes zero emission and lower operation cost, and can adapt to special working conditions of the bulk feed truck.

Description

Technical Field

[0001] The utility model relates to an electric vehicle, in particular to a new energy bulk feed truck. Background Art

[0002] There are two traditional feed transportation methods. One is bagged transfer and manual loading and unloading, which has high labor intensity, high manual consumption, long loading and unloading time, and high costs for labor and packaging. The other is transportation by tank trucks, that is, bulk pellet feed trucks, which are mainly used in large-scale farms and can efficiently transport feed to the farms. They usually have a large load capacity, such as different models of 40 cubic meters, 30 cubic meters, 22 cubic meters, etc. to meet the needs of different farms. The vehicles are usually equipped with a mature unloading system to ensure that the feed can be quickly unloaded into the farm.

[0003] However, most of these bulk feed trucks use diesel as fuel. At present, the fuel price fluctuates greatly. In the long run, the use cost is higher than that of new energy bulk feed trucks; the exhaust gas from fuel bulk feed trucks contains harmful substances such as carbon dioxide and nitrogen oxides, which pollute the environment; fuel bulk feed trucks need to regularly change engine oil, spark plugs, etc., and the maintenance cost is relatively high.

[0004] At present, the popularization and use of new energy electric vehicles in the aquaculture industry are still in the initial stage. Especially for bulk feed trucks, since the vehicle needs to be disinfected and sterilized after transporting a trip of feed, the disinfection and sterilization process for each trip involves four times of cleaning, one time of mist spraying, and two times of drying. Among them, the drying center in the feed factory: the temperature is generally 70°C and lasts for more than 40 minutes; the drying room in the farm is a fuel-fired hot air blower, with an average temperature of 70°C in winter and lasts for 60 minutes after reaching the temperature, and the average temperature in summer can reach 90°C and lasts for 45 minutes; during the disinfection and sterilization process, aqueous solutions such as glutaraldehyde, potassium monopersulfate, hypochlorous acid, and calcium chloride are mainly used. In such a harsh disinfection and sterilization process, the battery packs in common electric vehicles will show serious corrosion phenomena in a very short time, and some functions will be damaged, thus affecting the driving safety of the vehicle. Therefore, how to solve the above problems and make electric vehicles better adapt to the aquaculture industry is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the Utility Model

[0005] The utility model aims at the problems existing in electric vehicles in the prior art and provides a new energy bulk feed truck.

[0006] In order to solve the above technical problems, the utility model is solved by the following technical solutions:

[0007] A new energy bulk feed truck includes a chassis, on which a feed tank and a discharging auger are installed. It also includes a power system, which includes a battery pack, an electric drive axle, and a high-voltage box. The battery pack, the electric drive axle, and the high-voltage box are electrically connected. The battery pack includes a battery pack housing, and the battery pack housing includes a battery pack frame and a sheet metal skin arranged outside the battery pack frame.

[0008] The high-voltage box includes a box body. Both the sheet metal skin and the box body are made of weather-resistant steel. Spray paint coatings are provided on the outer surfaces of the feed tank, the sheet metal skin, and the box body. The materials and spray paint treatment of the feed tank, the battery pack, and the high-voltage box enable them to withstand severe disinfection along with the vehicle without experiencing corrosion that affects their functions, meeting the usage conditions of the new energy bulk feed truck.

[0009] Preferably, the discharging auger includes a vertically arranged longitudinal feed pipe and a transverse feed pipe rotatably connected to the upper end of the longitudinal feed pipe. The bottom of the longitudinal feed pipe is in communication with the interior of the feed tank. A discharging hopper is provided at the end of the transverse feed pipe away from the longitudinal feed pipe. Spiral feed shafts are provided in both the longitudinal feed pipe and the transverse feed pipe. The discharging auger can unload the feed evenly and quickly into the farm.

[0010] Preferably, the battery pack further includes a battery PACK arranged inside the battery pack housing. The battery PACK includes a PACK box body and battery modules arranged inside the PACK box body. Heat-insulating rubber and plastic cotton are provided between the sheet metal skin and the battery pack frame and on the bottom surface of the PACK box body.

[0011] The battery pack adopts a double-layer heat-insulating measure, that is, heat-insulating rubber and plastic cotton are provided between the sheet metal skin and the battery pack frame and on the bottom surface of the PACK box body, enabling the temperature of the battery pack cells to be lower than 55°C and the temperature difference not to exceed 5°C in a high-temperature environment, ensuring the working performance of the battery pack cells.

[0012] Preferably, the sheet metal skin includes a skin substrate fixed on one side of the battery pack frame and a skin cover plate connected to the skin substrate. The skin substrate is configured as a plate, and the skin cover plate is configured as a shell with one end open, and the open end is connected to the skin substrate. A first sealing gasket is provided at the connection between the skin cover plate and the skin substrate. The setting of the first sealing gasket can ensure the sealing performance at the connection of the battery pack and ensure a certain sealing inside the battery pack.

[0013] Preferably, the heat-insulating rubber and plastic cotton includes a substrate heat-insulating rubber and plastic cotton arranged between the skin substrate and the battery pack frame and a cover plate heat-insulating rubber and plastic cotton arranged between the inner side wall of the skin cover plate and the battery pack frame. The substrate heat-insulating rubber and plastic cotton is configured as a plate matching the structure of the skin substrate, and the cover plate heat-insulating rubber and plastic cotton is configured as a shell matching the structure of the skin cover plate. The shape and structure of the heat-insulating rubber and plastic cotton make it convenient for installation and enhance its heat-insulating effect on the battery pack.

[0014] Preferably, a battery pack pipeline hole is also provided on the skin substrate, and a second gasket is provided at the battery pack pipeline hole on the front side of the heat-insulating rubber and plastic cotton. A gasket pressing plate is provided outside the second gasket, and the gasket pressing plate presses the second gasket tightly on the heat-insulating rubber and plastic cotton through screws. The setting of the second gasket can effectively ensure the sealing performance at the battery pack pipeline hole, and the gasket pressing plate can enhance the installation stability of the gasket.

[0015] Preferably, the box body includes a shell with an upward opening and a cover plate arranged at the upper opening of the shell, and an annular gasket is provided at the connection between the cover plate and the shell. The setting of the annular gasket can ensure the sealing performance between the shell and the cover plate.

[0016] Preferably, it further includes a ladder with its upper end fixed at the top of the feed tank. The setting of the ladder enables the staff to reach the top of the tank body, facilitating the work.

[0017] Due to the adoption of the above technical solutions, the present utility model has remarkable technical effects:

[0018] The present utility model not only retains the advantages of the fuel bulk feed truck but also abandons its disadvantages of high energy consumption and high pollution. It uses a battery as the power source and drives the vehicle through an electric motor, achieving zero emissions and lower operating costs, and can also adapt to the special working conditions of the bulk feed truck. Description of the Drawings

[0019] Figure 1 is a schematic structural diagram of Embodiment 1 of the present utility model.

[0020] Figure 2 is Figure 1 the axonometric drawing of

[0021] Figure 3 is Figure 2 another perspective view of

[0022] Figure 4 is Figure 1 the explosion diagram of the battery pack in

[0023] Figure 5 is Figure 4 the schematic structural diagram of the battery PACK in

[0024] Figure 6 is Figure 3 the schematic internal structure diagram at the battery pack pipeline hole in

[0025] Figure 7 is Figure 6 the sectional view of

[0026] Figure 8 is Figure 4Schematic diagram of the connection structure between the middle heat-insulating rubber and plastic cotton and the sheet metal skin.

[0027] Figure 9 is Figure 8 the sectional view of.

[0028] Figure 10 is Figure 1 the schematic diagram of the structure of the medium-voltage box.

[0029] Figure 11 is Figure 10 the explosion diagram of.

[0030] Figure 12 is Figure 10 the schematic diagram of the structure after removing the cover plate in.

[0031] Figure 13 is Figure 12 the schematic diagram of the structure after removing the low-voltage control box.

[0032] Figure 14 is Figure 13 the schematic diagram of the structure after removing the support beam. Specific implementation manner

[0033] The present utility model will be further described in detail below in conjunction with the drawings and embodiments.

[0034] Embodiment 1

[0035] A new energy bulk feed truck, as Figures 1 - 3 shown, includes a chassis 10, a feed tank 20 and a discharge auger 60 are installed on the chassis 10, and further includes a power system. The power system includes a battery pack 40, an electric drive axle 30 and a high-voltage box 50. The battery pack 40, the electric drive axle 30 and the high-voltage box 50 are electrically connected. The battery pack 40 includes a battery pack housing, and the battery pack housing includes a battery pack 40 frame and a sheet metal skin arranged outside the battery pack 40 frame.

[0036] The high-voltage box 50 includes a box body. Both the sheet metal skin and the box body are made of weather-resistant steel. The outer surfaces of the feed tank 20, the sheet metal skin and the box body are all provided with a paint coating. The paint coating is processed by shot peening, and is sprayed and protected with three layers of primer, topcoat and intermediate paint, and also undergoes anti-rust, anti-corrosion and non-toxic treatment, which can fully meet the disinfection requirements of the feed.

[0037] In this embodiment, the electric vehicle has a complete three-electric system. The battery pack 40 and the electric drive axle 30 replace the fuel tank and the engine of the fuel bulk feed truck. The battery is used as the power source, and the vehicle is driven by an electric motor. The exposed key components such as the battery pack 40, the high-voltage box 50, and the electric drive axle 30 can all meet the usage requirements of high-temperature disinfection and high-frequency cleaning of the feed truck. Among them, the electric drive axle 30 is an existing device that converts electrical energy into mechanical energy. It uses highly integrated components such as motors, reducers, and differentials, enabling the axle to have the ability to output power, thus greatly releasing the space of the chassis 10 and improving the overall efficiency.

[0038] Among them, the discharging auger 60 is a mature tubular screw conveyor on the existing fuel bulk feed truck. It includes a vertically arranged longitudinal feed pipe 100 and a transverse feed pipe 200 rotatably connected to the upper end of the longitudinal feed pipe 100. It also includes an auger electric control box 70 for controlling the operation of the discharging auger 60. The bottom of the longitudinal feed pipe 100 is communicated with the inside of the feed tank 20. The end of the transverse feed pipe 200 away from the longitudinal feed pipe 100 is provided with a discharging hopper 300. Screw feed shafts are provided in both the longitudinal feed pipe 100 and the transverse feed pipe. Through the control of the auger electric control box, local operation can be realized, and remote operation can also be carried out at an appropriate distance.

[0039] The battery pack 40 in this embodiment, as Figures 4 - 9 shown, includes a battery pack outer shell 1 and a battery PACK 2 arranged inside the battery pack outer shell 1. The battery pack outer shell 1 includes a battery pack frame 101 and a sheet metal skin 102 arranged outside the battery pack frame 101. The battery PACK 2 includes a PACK box body 201 and battery modules arranged inside the PACK box body 201. Heat-insulating rubber and plastic cotton 3 are provided between the sheet metal skin 102 and the battery pack frame 101 and on the bottom surface of the PACK box body 201.

[0040] In this embodiment, the material of the sheet metal skin 102 is selected as high-quality weather-resistant steel. First, it is cut by laser and then bent, and finally formed by welding. At the same time, the frame sheet metal skin 102 is protected by three spray coatings of primer, intermediate paint, and topcoat. They can be respectively selected as zinc-rich primer, epoxy intermediate paint, and fluorocarbon topcoat to form a three-layer spray protection. Of course, other types of coatings with high temperature resistance, chemical corrosion resistance, and water resistance can also be used. During the spraying process, the sheet metal skin 102 is first sandblasted to clean the welds, and then sprayed. After spraying, heat-insulating rubber and plastic cotton with a low thermal conductivity coefficient is pasted inside the sheet metal skin 102 to provide the first protection for the battery cells, ensuring that the temperature does not enter the inside of the battery pack 40 during the baking and disinfection of the new energy bulk feed truck.

[0041] The bottom of the battery PACK2 is also provided with heat-insulating rubber and plastic cotton 3, which provides a second layer of protection for the battery cells, enabling the entire battery to fully meet the special working conditions of new energy electric vehicles. For example, when a bulk feed truck transports a trip of feed, the vehicle needs to be disinfected. The disinfection process for each trip of transportation involves four times of cleaning, one time of fogging, and two times of drying. Among them, the drying center in the feed mill: the temperature is generally 70°C and lasts for more than 40 minutes; the drying room in the farm is a fuel-fired hot air blower, with an average temperature of 70°C in winter and lasts for 60 minutes after reaching the temperature, and the average temperature in summer can reach 90°C and lasts for 45 minutes; during the disinfection process, aqueous solutions such as glutaraldehyde, potassium monopersulfate, hypochlorous acid, and calcium chloride are mainly used. By adopting double-layer heat-insulating measures for the battery pack 40, that is, heat-insulating rubber and plastic cotton 3 is provided between the sheet metal skin 102 and the battery pack frame 101 and on the bottom surface of the PACK box body 201, so that the temperature of the battery pack cells can be lower than 55°C and the temperature difference does not exceed 5°C in a high-temperature environment.

[0042] Among them, in this embodiment, the thermal conductivity coefficient of the rubber and plastic cotton is 0.03 - 0.045 W / (m·K), which is a commonly used heat-insulating and heat-preserving material and has a B1-level flame retardant performance.

[0043] The PACK box body 201 in this embodiment includes a lower box body 202 and an upper cover plate 203. The heat-insulating rubber and plastic cotton 3 is arranged at the lower bottom surface of the lower box body 202. High and low voltage connectors 204, liquid cooling pipe joints 205, and pressure relief valves 206 are arranged on the outer end surface of the PACK box body 201, and connectors resistant to chemical corrosion are adopted. The upper cover plate 203 is made of a high molecular composite material with a thermal conductivity coefficient of 0.1 - 0.3 W / (m·K), such as a resin fiberglass composite material, so that the battery PACK2 has certain heat-insulating and chemical corrosion-resistant properties.

[0044] In this embodiment, the sheet metal skin 102 includes a skin substrate 103 fixed on one side of the battery pack frame 101 and a skin cover plate 104 connected to the skin substrate 103. The skin substrate 103 is configured in a plate shape, and the skin cover plate 104 is configured in a shell shape with one end open and the open end is connected to the skin substrate 103. A first sealing gasket 105 is arranged at the connection between the skin cover plate 104 and the skin substrate 103.

[0045] Among them, the heat-insulating rubber and plastic cotton 3 includes a substrate heat-insulating rubber and plastic cotton 302 arranged between the skin substrate 103 and the battery pack frame 101 and a cover plate heat-insulating rubber and plastic cotton 301 arranged between the inner side wall of the skin cover plate 104 and the battery pack frame 101. The substrate heat-insulating rubber and plastic cotton 302 is configured in a plate shape matching the structure of the skin substrate 103, and the cover plate heat-insulating rubber and plastic cotton 301 is configured in a shell shape matching the structure of the skin cover plate 104.

[0046] There is also a battery pack pipeline hole 4 on the skin substrate 103. At the battery pack pipeline hole 4, there is also a second gasket 401 arranged on the front surface of the heat-insulating rubber and plastic cotton 3. Outside the second gasket 401, there is a gasket pressing plate 402. The gasket pressing plate 402 presses the second gasket 401 tightly on the heat-insulating rubber and plastic cotton 3 through screws 305. The battery pack pipeline hole 4 includes a communication line through-hole 403, a power battery positive pole through-hole 404, a power battery negative pole through-hole 405, a liquid cooling water pipe inlet hole 406, and a liquid cooling water pipe outlet hole 407 that are arranged at intervals from top to bottom in sequence. The setting of the gasket pressing plate 402 can enable the gasket and the rubber and plastic cotton to be installed more stably at the battery pack pipeline hole 4.

[0047] In order to facilitate the installation of the second gasket 401 and ensure the sealing effect of the second gasket 401 at the battery pack pipeline hole 4, the second gasket 401 is cut into two pieces, that is, it is composed of two gasket components 408 with semicircular notches on one side. The number and size of the semicircular notches are the same as the number and size of the battery pack pipeline hole 4. After the two gasket components 408 are spliced, a circular hole for each pipeline hole to pass through is formed in the middle. This splicing form can make the gasket fit more closely to the pipeline hole wall compared with the way of cutting corresponding round holes on the whole gasket, and has a better sealing effect.

[0048] In this embodiment, both the first gasket 105 and the second gasket 401 are soft polytetrafluoroethylene gaskets, so as to seal each connection part of the sheet metal skin 102, ensure the sealing performance of the inner cavity of the battery pack 40, and increase the heat insulation effect. At the same time, it can reduce the corrosion of the internal PACK box body 201 by the disinfection agent as much as possible, so that the whole battery pack 40 has the characteristics of anti-chemical agent corrosion, anti-high temperature and water resistance.

[0049] In order to better realize the assembly of the sheet metal skin 102, a ring-shaped flange 106 is provided at the open end of the skin cover plate 104. The ring-shaped flange 106 is connected to the edge of the skin cover plate 104 through a plurality of evenly arranged bolts. The gasket is provided with bolt holes 107 for the bolts to pass through.

[0050] In this embodiment, in order to achieve the heat insulation effect of the heat-insulating rubber and plastic cotton 3, a rubber and plastic cotton back glue for bonding to the inner surface of the sheet metal skin 102 or the bottom surface of the PACK box body 201 is provided on the back surface of the heat-insulating rubber and plastic cotton 3, and a tin foil layer 303 is pasted on the front surface. The setting of the tin foil layer 303 can further enhance the heat insulation and heat preservation effect of the rubber and plastic cotton and enhance the water resistance of the battery pack 40.

[0051] On the front side of the heat-insulating rubber and plastic cotton 3 between the sheet metal skin 102 and the battery pack frame 101, there is also a rubber and plastic cotton pressing plate 304. The rubber and plastic cotton pressing plate 304 presses the heat-insulating rubber and plastic cotton 3 tightly on the sheet metal skin 102 through screws 305. Through the arrangement of the rubber and plastic cotton pressing plate 304, the rubber and plastic cotton can be pressed more stably between the sheet metal skin 102 and the battery pack frame 101.

[0052] As Figures 10 - 14 shown, the high-voltage box 50 in this embodiment includes a box body 5. Inside the box body 5, there is a horizontally arranged support beam 501. The support beam 501 divides the inside of the box body 5 into an upper low-voltage control cavity and a lower internal control circuit installation cavity. In the low-voltage control cavity, there is a low-voltage control box 502 fixed on the support beam 501. In the internal control circuit installation cavity, there is an internal control circuit and circuit components 503.

[0053] In this embodiment, the structure of dividing the inside of the box body 5 into upper and lower layers is adopted to realize the separate arrangement of the low-voltage control line and the internal control line. The top-view projection area is greatly reduced, and its occupied space on the vehicle is extremely reduced. By installing the low-voltage control box 502 on the support beam 501 and maintaining sufficient electrical clearance and creepage distance between the low-voltage control box 502 and the internal control circuit and corresponding circuit components, the integration degree of the high-voltage box 50 is further improved. The top-view projection size of the high-voltage box 50 is reduced by more than 20%, which is more conducive to the selection of the installation position of the high-voltage box 50 on the electric vehicle.

[0054] In order to better fix the support beam 501 inside the box body 5, connection seats 504 are fixed on the opposite side walls inside the box body 5. The connection seats 504 on the opposite side walls are arranged in pairs opposite to each other. The support beam 501 is in the shape of a long strip board, and both ends are fixed on the connection seats 504 arranged in pairs opposite to each other through bolts. The connection seat 504 in this embodiment is in the shape of an L-shaped board. The horizontal plane is used to install bolts, and the vertical plane is fixed to the inner wall of the box body 5, such as by welding or other fixing methods.

[0055] In this embodiment, there are two support beams 501, which are arranged in parallel at intervals; among them, on the support beam 501, there is a first support plate 505 that intersects with the support beam 501 and is used to support the edge part in the length direction of the low-voltage control box 502. The length direction of the first support plate 505 is perpendicular to the length direction of the support beam 501. There are also two first support plates 505. The two first support plates 505 extend towards the two ends of the box body 5 respectively, and respectively realize the installation and fixation of the two low-voltage control boxes 502, so that the two low-voltage control boxes 502 are arranged staggeredly, further ensuring the uniformity of the installation of each component inside the box body 5.

[0056] To better install the low-voltage control box 502, the first support plate 505 is designed as a long strip plate and is provided with bolt holes 506 for fixing to the support beam 501. It is also provided with a long slot 507 whose length direction is along the length direction of the second support plate 508 and is used for installing the low-voltage control box 502. The design of the long slot 507 can facilitate the fixing and storage of each wire in the electric box body.

[0057] On the inner side wall of the box body 5, a second support plate 508 for supporting the edge part of the low-voltage control box 502 in the width direction is also installed. The length direction of the second support plate 508 is parallel to the length direction of the support beam 501. At the end of the low-voltage control box 502 along the length direction, there is a connecting strip 509 that is correspondingly connected to the second support plate 508 through bolts.

[0058] Through the combined action of the support beam 501, the first support plate 505, and the second support plate 508, the stable installation of the low-voltage control box 502 in the box body 5 can be achieved.

[0059] In this embodiment, a connector electrically connected to the internal control circuit is installed on the outer side wall of the box body. The connector includes a charge and discharge connector 512, a vehicle communication 513, a manual service disconnect 514 (MSD), a thermal management system connector 515 (TMS), a battery positive / negative connector 516, an internal communication connector 517, and a computer troubleshooting connector 518 (Debug).

[0060] The box body 5 includes a shell 51 with an upward opening and a cover plate 52 arranged at the upper opening of the shell 51. At the connection between the cover plate 52 and the shell 51, an annular gasket 53 is provided. And to facilitate the installation of the annular gasket 53 and ensure the connection sealing performance between the shell 51 and the cover plate 52, an annular flange 510 is provided at the upper edge of the shell 51. The annular flange 510 and the edge of the cover plate 52 are connected by a plurality of evenly arranged screws. The annular gasket 53 is arranged between the annular flange 510 and the edge of the cover plate 52, and screw holes 511 for the screws to pass through are provided on the annular gasket 53.

[0061] Among them, the cover plate 52 and the shell 51 are made of high-quality weathering steel, and a coating is provided on the outer surface of the box body 5. The coating includes a primer, an intermediate paint, and a topcoat, which can be respectively selected as a zinc-rich primer, an epoxy intermediate paint, and a fluorocarbon topcoat to form a three-layer spraying protection. Of course, other types of spraying paints with the same function can also be used, and paints with high temperature resistance, chemical corrosion resistance, and water resistance are used for spraying, and sandblasting treatment is carried out before spraying to clean the weld slag.

[0062] The annular gasket 53 is made of soft polytetrafluoroethylene. The high-voltage box 50 has the characteristics of high integration, miniaturization, high temperature resistance, corrosion resistance and water resistance, and has a super IP6K9K protection ability, enabling the high-voltage box 50 to meet the harsh high-temperature disinfection and high-frequency cleaning conditions of the feed truck, which is beneficial to the popularization and application of the pure electric bulk feed truck.

[0063] It is easy to understand that those skilled in the art can combine, split, recombine, etc. the embodiments of the present application based on one or several embodiments provided by the present application to obtain other embodiments, and these embodiments do not exceed the protection scope of the present application.

[0064] In summary, the above are only the preferred embodiments of the present invention, and all equivalent changes and modifications made according to the scope of the patent application of the present invention shall fall within the scope covered by the patent of the present invention.

Claims

1. A new energy bulk feed truck, comprising a chassis (10), on which a feed tank (20) and a discharge auger (60) are mounted, characterized in that: The invention also includes a power system, the power system including a battery pack (40), an electric drive bridge (30) and a high-voltage box (50), the battery pack (40), the electric drive bridge (30) and the high-voltage box (50) being electrically connected, the battery pack (40) including a battery pack outer shell (1), the battery pack outer shell (1) including a battery pack frame (101) and a sheet metal skin (102) arranged outside the battery pack frame (101), The high-pressure box (50) comprises a box body (5), wherein the sheet metal skin (102) and the box body (5) are both made of weathering steel, and the outer surfaces of the feed tank (20), the sheet metal skin (102) and the box body (5) are all provided with a spray paint coating.

2. A new energy bulk feed truck according to claim 1, characterized in that: The unloading auger (60) comprises a longitudinal conveying pipe (100) arranged vertically and a transverse conveying pipe (200) rotatably connected to the upper end of the longitudinal conveying pipe (100); the bottom of the longitudinal conveying pipe (100) is communicated with the inside of the feed tank (20); the end of the transverse conveying pipe (200) away from the longitudinal conveying pipe (100) is provided with a unloading hopper (300); and spiral conveying shafts are provided in both the longitudinal conveying pipe (100) and the transverse conveying pipe.

3. A new energy bulk feed vehicle according to claim 1, characterized in that: The battery pack (40) further comprises a battery PACK (2) arranged inside the battery pack outer shell, the battery PACK (2) comprising a PACK box (201) and a battery module arranged inside the PACK box (201), and heat-insulating rubber-plastic cotton (3) is provided between the sheet metal skin (102) and the battery pack frame (101) and on the bottom surface of the PACK box (201).

4. A new energy bulk feed truck according to claim 1, characterized in that: The sheet metal skin (102) comprises a skin base plate (103) fixed to one side of a battery pack frame (101) and a skin cover plate (104) connected to the skin base plate (103); the skin base plate (103) is constructed in a plate shape; the skin cover plate (104) is constructed in a shell shape with one end open and the open end connected to the skin base plate (103); a first sealing gasket (105) is provided at the connection between the skin cover plate (104) and the skin base plate (103).

5. A new energy bulk feed vehicle according to claim 2, characterized in that: The heat-insulating rubber-plastic cotton (3) comprises a base plate heat-insulating rubber-plastic cotton (302) arranged between a skin base plate (103) and a battery pack frame (101), and a cover plate heat-insulating rubber-plastic cotton (301) arranged between an inner side wall of a skin cover plate (104) and the battery pack frame (101); the base plate heat-insulating rubber-plastic cotton (302) is configured in a plate shape matching the structure of the skin base plate (103), and the cover plate heat-insulating rubber-plastic cotton (301) is configured in a shell shape matching the structure of the skin cover plate (104).

6. A new energy bulk feed truck according to claim 4, characterized in that: A battery pack line hole (4) is also provided on the skin base plate (103), and a second sealing gasket (401) is also provided at the battery pack line hole (4) and arranged on the front side of the heat insulating rubber and plastic cotton (3). A sealing gasket pressing plate (402) is provided outside the second sealing gasket (401), and the sealing gasket pressing plate (402) presses the second sealing gasket (401) onto the heat insulating rubber and plastic cotton (3) via screws (305).

7. A new energy bulk feed truck according to claim 1, characterized in that: The box body (5) comprises a shell (51) with an opening facing upward and a cover plate (52) arranged at the upper opening of the shell (51), and an annular sealing gasket (53) is provided at the connection between the cover plate (52) and the shell (51).

8. The new energy bulk feed truck according to claim 1, characterized in that: It also includes a ladder (80) whose upper end is fixed to the top of the feed tank (20).

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