Edge beam assembly, lower box body, battery pack and vehicle

Abstract

The utility model discloses a boundary beam assembly, a lower box body, a battery pack and a vehicle. The boundary beam assembly comprises a boundary beam, a first beam and a second beam, wherein an avoiding opening is formed in the boundary beam in a penetrating mode; and the installation panel is connected with the edge beam, an installation hole and a fixing hole are formed in the installation panel in a penetrating mode, and the installation hole and the fixing hole are formed corresponding to the receding opening. According to the utility model, the installation panel and the edge beam are designed independently, the electrical connector is not directly installed on the edge beam, but installed on the installation panel, the installation panel is an independent panel and is not limited by numerical control machine tool tapping of an aluminum profile edge beam and laser tapping of a rolling steel edge beam, and various tapping modes can be selected. In addition, an electrical connector is not directly installed on the edge beam any more, the thickness of the edge beam is not limited any more, the optimal wall thickness can be designed according to needs, and lightweight production of the whole vehicle is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle equipment, and in particular to a side beam assembly, a lower box body, a battery pack and a vehicle. Background Art

[0002] At present, electrical connectors such as high and low voltage connectors of battery packs are generally installed at the side beam position of the lower body of the battery box. Fixing holes are directly opened on the side beams, and the standard parts of the electrical connectors are embedded in the fixing holes. The contour of the part of the electrical connector embedded in the fixing hole is irregular and complex, resulting in complex features of the fixing hole. Limited by the large-scale structural parts of the side beam and the molding process of different materials, if the side beam is made of aluminum profiles, it is necessary to use CNC machine tools to process the fixing holes, resulting in low production efficiency; if the side beam is made of rolled steel, the fixing holes can only be cut by laser cutting, which is costly and has low production efficiency. In addition, in order to achieve stable installation of electrical connectors, there are strict requirements for the wall thickness of the installed side beams, which is generally around 3mm. However, the rolled steel side beams are limited by the rolling process and can only be made of equal wall thickness ribs. If the wall thickness of all rolled steel side beams is increased from 1.2mm to 3mm, the overall weight of the side beams will increase significantly. Utility Model Content

[0003] In view of this, the utility model provides a side beam assembly, a lower box, a battery pack and a vehicle to solve the above technical problems.

[0004] The side beam assembly provided by the utility model comprises:

[0005] A side beam, wherein a clearance opening is provided through the side beam;

[0006] An installation panel is connected to the side beam, and an installation hole and a fixing hole are formed through the installation panel. The installation hole and the fixing hole are both arranged corresponding to the avoidance opening.

[0007] Optionally, a glue storage groove is provided on a side surface of the mounting panel facing the side beam.

[0008] Optionally, a sealing strip is provided on a surface of the mounting panel facing away from the side beam.

[0009] Optionally, the side beam assembly further includes:

[0010] an electrical connector, wherein the electrical connector is partially embedded in the fixing hole;

[0011] A mounting member passes through the electrical connector and the mounting hole to achieve connection between the electrical connector and the mounting panel.

[0012] Optionally, a sealing rivet nut is fixed at at least one of the mounting holes on a side surface of the mounting panel facing the side beam.

[0013] Optionally, a positioning hole is formed through the installation panel; a positioning column is provided on the electrical connector, and the positioning column is arranged corresponding to the positioning hole.

[0014] Optionally, a plurality of first connection holes are provided on the installation panel;

[0015] A plurality of second connection holes are formed on the side beam, and the plurality of second connection holes are arranged in one-to-one correspondence with the plurality of first connection holes;

[0016] The side beam assembly also includes a plurality of fixing members, which pass through the corresponding first connection holes and the second connection holes in sequence to achieve the connection between the mounting panel and the side beam.

[0017] Optionally, an avoidance groove is provided around the installation panel.

[0018] Optionally, a wiring harness connector and a guard plate connector are provided on the side beam.

[0019] Optionally, the mounting panel is integrally stamped and formed.

[0020] Optionally, the ratio of the wall thickness at the connection between the side beam and the mounting panel to the total thickness after the side beam and the mounting panel are connected is 2:7.

[0021] The utility model also provides a lower box body, comprising a bottom plate, and also comprising any one of the side beam assemblies described above, wherein the side beams of the side beam assembly are connected to the bottom plate.

[0022] The utility model also provides a battery pack, comprising an upper box body and the above-mentioned lower box body, wherein the upper box body covers the lower box body.

[0023] The utility model also provides a vehicle, comprising the battery pack described above.

[0024] Compared with the prior art, the above technical solution provided by the utility model has at least the following beneficial effects:

[0025] With the side beam assembly, lower box, battery pack and vehicle of the utility model, the mounting panel and the side beam are designed independently of each other, and the electrical connector is no longer directly mounted on the side beam, but is installed on the mounting panel. The mounting panel is an independent panel, and is not limited by the CNC machine tool opening of the aluminum profile side beam and the laser opening of the rolled steel side beam. A variety of opening methods can be selected, which is conducive to improving production efficiency. Moreover, the electrical connector is no longer directly mounted on the side beam, and its thickness is no longer limited. The optimal wall thickness can be designed as required, which is conducive to lightweight production of the entire vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 An exploded view of a side beam assembly according to an embodiment of the utility model;

[0027] Figure 2 for Figure 1 An assembly diagram of the side beam assembly shown;

[0028] Figure 3 for Figure 1 A schematic diagram of a mounting panel of the side beam assembly shown;

[0029] Figure 4 for Figure 3 A cross-sectional view of the installation panel at position AA shown;

[0030] Figure 5 For electrical connectors and Figure 2 Schematic diagram of the connection process of the installation panel shown;

[0031] Figure 6 For electrical connectors to be installed Figure 2 A schematic diagram of the installation panel shown;

[0032] Figure 7 It is a schematic diagram of the lower box body described in one embodiment of the utility model.

[0033] Reference numerals:

[0034] 1: side beam; 101: avoidance; 102: second connection hole; 2: installation panel; 201: installation hole; 202: fixing hole; 203: glue storage tank; 204: positioning hole; 205: first connection hole; 206: avoidance groove; 207: raised part; 3: electrical connector; 4: installation piece; 5: fixing piece; 6: wiring harness connector; 7: guard plate connector; 8: bottom plate; 9: sealing rivet nut. DETAILED DESCRIPTION

[0035] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings.

[0036] It is easy to understand that according to the technical solution of the utility model, without changing the essential spirit of the utility model, a variety of structural modes and implementation modes can be replaced by those skilled in the art. Therefore, the following specific implementation methods and drawings are only exemplary descriptions of the technical solution of the utility model, and should not be regarded as the entirety of the utility model or as a limitation or restriction on the technical solution of the utility model.

[0037] The directional terms such as up, down, left, right, front, back, front, back, top, bottom, etc. mentioned or may be mentioned in this specification are defined relative to the structures shown in the drawings. They are relative concepts and may change accordingly according to different positions and different usage conditions. Therefore, these or other directional terms should not be interpreted as restrictive terms.

[0038] Figure 1 An exploded view of a side beam assembly according to an embodiment of the utility model; Figure 2 for Figure 1 An assembly diagram of the side beam assembly shown; Figure 3 for Figure 1 A schematic diagram of a mounting panel of the side beam assembly shown; Figure 4 for Figure 3 A cross-sectional view of the installation panel at position AA shown; Figure 5 For electrical connectors and Figure 2 Schematic diagram of the connection process of the installation panel shown; Figure 6 For electrical connectors to be installed Figure 2 Schematic diagram of the mounting panel shown.

[0039] like Figure 1-Figure 6 As shown, the side beam assembly includes a side beam 1 and a mounting panel 2. The side beam 1 is provided with an escape opening 101; the mounting panel 2 is connected to the side beam 1, and the mounting panel 2 is provided with an installation hole 201 and a fixing hole 202, and the installation hole 201 and the fixing hole 202 are both provided corresponding to the escape opening 101.

[0040] During the installation process, the installation panel 2 is first installed to the outer side wall of the side beam 1 facing away from the battery module, and after the two are connected, the installation hole 201 and the fixing hole 202 on the installation panel 2 are set corresponding to the avoidance opening 101 on the side beam 1. Then, the part of the electrical connector 3 that needs to be embedded in the fixing hole 202 is inserted into the fixing hole 202, so that a part of the electrical connector 3 is exposed from the avoidance opening 101 on the side beam 1, and a part is exposed from the installation panel 2, and then the installation panel 2 and the part of the electrical connector 3 that is exposed from the installation panel 2 and abuts against it are connected by means of a connector, so as to realize the electrical connection with the installation panel 2 and the side beam 1, and then the electrical connector 3 is used to connect the electrical components inside and outside the battery box.

[0041] By adopting the side beam assembly of the utility model, the mounting panel 2 and the side beam 1 are designed independently of each other, and the electrical connector 3 is no longer directly mounted on the side beam 1, but is installed on the mounting panel 2. The mounting panel 2 is an independent panel, and is not limited by the CNC machine tool opening of the aluminum profile side beam 1 and the laser opening of the rolled steel side beam 1. A variety of opening methods can be selected, which is beneficial to improving production efficiency. Moreover, the electrical connector 3 is no longer directly mounted on the side beam 1, and its thickness is no longer limited. The optimal wall thickness can be designed as required, which is beneficial to the lightweight production of the whole vehicle.

[0042] like Figure 1 As shown, in this embodiment, three fixing holes 202 are provided through the mounting panel 2, and the shapes of the three fixing holes 202 are different, correspondingly three different electrical connectors 3 are embedded, and a plurality of mounting holes 201 are provided at intervals in the circumferential direction of each fixing hole 202, for the mounting member 4 to pass through, and connect the electrical connector 3 with the mounting panel 2, and accordingly, three avoidance openings 101 of matching sizes are provided through the side beam 1, and one avoidance opening 101 corresponds to one fixing hole 202 and the matching mounting holes 201 provided around it. The mounting panel 2 is a component independent of the side beam 1, and is not limited by the laser hole making constraints of large structural parts such as the rolled steel side beam, and any convenient hole opening method can be used. According to the actual application, the shape and size of the side beam 1 and the shape and size of the mounting panel 2 can be adjusted. The number and shape and size of the fixing holes 202 are adjusted with the number and contour changes of the electrical connectors 3. The number and size of the avoidance openings 101 are adjusted with the number of fixing holes 202 and the area occupied by the fixing holes 202 and the matching mounting holes 201 around them. Any connection method can be adopted between the mounting panel 2 and the side beam 1.

[0043] Optionally, a glue storage tank 203 is provided on one side of the mounting panel 2 facing the side beam 1. The glue storage tank 203 is provided, and a structural sealant is filled in the glue storage tank 203, and the mounting panel 2 and the side beam 1 are bonded on the basis of being connected to ensure airtightness between the two.

[0044] like Figure 4 As shown, on the surface of the installation panel 2 facing the side beam 1, that is, Figure 4 The left side surface of the panel 2 is provided with a glue storage groove 203 with an arc-shaped cross section. In this embodiment, the glue storage groove 203 is stamped and formed, so a protrusion 207 is formed on the opposite side of the mounting panel 2 where the glue storage groove 203 is provided. Figure 3 As shown, the raised portion 207 is set to an irregular closed ring shape, and two closed annular raised portions 207 are provided, respectively surrounding the two fixing holes 202 on the left and one fixing hole 202 on the right, and the surface of one side of the mounting panel 2 facing the side beam 1 forms two closed annular glue storage grooves 203 of the same shape corresponding to the positions of the raised portions 207. According to actual application conditions, the number of the glue storage grooves 203 and the specific arrangement positions on the mounting panel 2 can be adjusted, and other processes other than stamping can also be used for forming.

[0045] Optionally, a sealing strip (not shown) is provided on the surface of the side of the mounting panel 2 facing away from the side beam 1. When part of the electrical connector 3 is embedded in the fixing hole 202 on the mounting panel 2, a part of the mounting panel 2 is exposed and abuts against the mounting panel 2. However, the surface of the electrical connector 3 is not a flat surface in the abutting part, and there is a gap between the two at some positions. A sealing strip is provided on the surface of the side of the mounting panel 2 facing away from the side beam 1, and the arrangement position of the sealing strip corresponds to the position where there is a gap between the electrical connector 3 and the mounting panel 2 after installation, so as to fill the gap between the two and ensure the sealing of the assembly interface between the two.

[0046] Optionally, the side beam assembly further includes an electrical connector 3 and a mounting member 4, wherein the electrical connector 3 is partially embedded in the fixing hole 202; the mounting member 4 passes through the electrical connector 3 and the mounting hole 201 to achieve connection between the electrical connector 3 and the mounting panel 2.

[0047] like Figure 5 , Figure 6 As shown, in the present embodiment, three electrical connectors 3 are provided, which are respectively a high voltage connector, a low voltage connector and an integrated connector from left to right in the figure, all of which are standard parts. A through hole is provided in the portion of each electrical connector 3 exposed from the mounting panel 2, and the mounting member 4 passes through the through hole and the corresponding mounting hole 201 on the mounting panel 2 to realize the connection between the electrical connector 3 and the mounting panel 2.

[0048] Optionally, a sealing rivet nut 9 is fixed to at least one mounting hole 201 on a side surface of the mounting panel 2 facing the side beam 1 .

[0049] The low-voltage connector is connected from the inside of the battery box. The integrated connector is divided into two parts and assembled from the inside and outside of the battery box. The mounting panel 2 is sandwiched in the middle. The wall thickness here has a high requirement, generally 3mm. The low-voltage connector and the integrated connector come with mounting nuts, so there is no need to set mounting nuts on the mounting panel 2. The high-voltage connector is installed from the outside of the battery box, and the mounting panel 2 needs to provide mounting nuts, such as Figure 4 As shown, at the mounting hole 201 corresponding to the high-voltage connector, a sealing rivet nut 9 is fixed on the surface of the mounting panel 2 facing the side beam 1, and the mounting member 4 is a bolt. After the bolt passes through the through hole on the high-voltage connector and the mounting hole 201 on the mounting panel 2, it is connected with the sealing rivet nut 9 to achieve the connection between the high-voltage connector and the mounting panel 2. The rivet nut requires an installation wall thickness of more than 2mm. Moreover, the sealing rivet nut 9 can be well fixed on the mounting panel 2, without considering the problems of tool interference and difficulty in placing parts when directly riveting on the side beam 1.

[0050] Optionally, the mounting panel 2 is provided with a positioning hole 204, and the electrical connector 3 is provided with a positioning post (not shown), which is provided corresponding to the positioning hole 204. With the cooperation between the positioning post and the positioning hole 204, when the electrical connector 3 is installed on the mounting panel 2, the corresponding connection position of the electrical connector 3 and the mounting panel 2 can be quickly and accurately located, which is conducive to improving the installation efficiency.

[0051] like Figure 3 As shown, in this embodiment, the mounting panel 2 is provided with positioning holes 204 on both sides of the left fixing hole 202 and the right fixing hole 202. Accordingly, a positioning post is connected to the corresponding position of the electrical connector 3. The positioning post is inserted into the positioning hole 204 to achieve preliminary positioning between the electrical connector 3 and the mounting panel 2, and then the connection operation between the two is performed. According to actual application conditions, the number and specific arrangement positions of the positioning holes 204 on the mounting panel 2, and the number and specific arrangement positions of the positioning posts on the electrical connector 3 can be matched and adjusted.

[0052] Optionally, the mounting panel 2 is provided with a plurality of first connection holes 205; the side beam 1 is provided with a plurality of second connection holes 102, and the plurality of second connection holes 102 are arranged one-to-one corresponding to the plurality of first connection holes 205; the side beam assembly further comprises a plurality of fixing members 5, and the plurality of fixing members 5 sequentially pass through the corresponding first connection holes 205 and second connection holes 102 to achieve the connection between the mounting panel 2 and the side beam 1. The connection between the mounting panel 2 and the side beam 1 is achieved by passing the fixing members 5 through the first connection holes 205 and the second connection holes 102, which is easy to operate and helps to improve assembly efficiency.

[0053] like Figure 1 As shown, in this embodiment, a plurality of first connection holes 205 are provided at intervals on the periphery of the protrusion 207, a first connection hole 205 is provided between the two fixing holes 202 on the left side, and a plurality of second connection holes 102 are provided at positions corresponding to the first connection holes 205 on the side beam 1. The fixing member 5 uses a sealed core-pulling rivet, and the plurality of sealed core-pulling rivets are respectively inserted into the matching first connection holes 205 and second connection holes 102 to achieve the connection between the installation panel 2 and the side beam 1. Moreover, the sealing core-pulling rivet is used to connect the installation panel 2 and the side beam 1, and the two can also use different materials. In this embodiment, the side beam 1 uses a 1.2mm high-strength steel material, and the installation panel 2 uses a 3mm thick aluminum alloy material to achieve the optimal combination of functional requirements. According to the actual application, the number of the first connection holes 205 and the opening position on the installation panel 2, as well as the number of the second connection holes 102 and the opening position on the side beam 1 can be matched and adjusted, and other fixing members 5 other than the sealing core-pulling rivet can also be used to achieve the connection between the installation panel 2 and the side beam 1.

[0054] Optionally, the installation panel 2 is provided with an avoidance groove 206 in the circumferential direction. The avoidance groove 206 is provided to avoid interference between other components and the installation panel 2 when they are installed.

[0055] like Figure 3 As shown, in this embodiment, the left corner and the middle of the upper end of the installation panel 2, as well as the middle left side of the lower end are provided with avoidance grooves 206. According to actual application conditions, the number of avoidance grooves 206 and the specific opening positions on the installation panel 2 can be adjusted.

[0056] Optionally, a harness connector 6 and a guard plate connector 7 are provided on the side beam 1. The harness connector 6 and the guard plate connector 7 are preset on the side beam 1 to facilitate fixing the external harness of the vehicle and realizing the connection between the side beam 1 and the vehicle guard plate.

[0057] like Figure 1 , Figure 5 As shown, in this embodiment, the upper and lower edges of the side beam 1 are fixed with wiring harness connectors 6, and the lower edge of the side beam 1 is fixed with guard plate connectors 7 at intervals. The number of wiring harness connectors 6 and guard plate connectors 7 and their specific arrangement positions on the side beam 1 are adjusted according to the vehicle assembly situation.

[0058] Optionally, the mounting panel 2 is integrally stamped and formed. The use of an integral stamping and forming process is conducive to improving production efficiency and yield rate, while reducing production costs.

[0059] In this embodiment, the mounting panel 2 is made of an aluminum plate, on which fixing holes 202 and mounting holes 201 matching the electrical connector 3 are directly punched out without machining or laser cutting.

[0060] Optionally, the ratio of the wall thickness at the connection between the side beam 1 and the mounting panel 2 to the total thickness after the side beam 1 and the mounting panel 2 are connected is 2:7. This arrangement can ensure that the mounting panel 2 has sufficient thickness to provide stable support for the electrical connector 3 embedded thereon, and can also ensure that the thickness of the side beam 1 is thin enough, which is conducive to the lightweight production of the entire vehicle.

[0061] In this embodiment, the side beam 1 is made of 1.2 mm high-strength steel, and the mounting panel 2 is made of 3 mm thick aluminum alloy. The specific thickness of the side beam 1 and the mounting panel 3 can be adjusted according to the support requirements of different electrical connectors 3 and the different materials used for the side beam 1.

[0062] Figure 7 This is a schematic diagram of the lower box body according to an embodiment of the utility model. Figure 7 As shown, the utility model further provides a lower box body, including a bottom plate 8, and also includes the side beam assembly described in any of the above embodiments, and the side beam 1 of the side beam assembly is connected to the bottom plate 8.

[0063] By adopting the lower box body of the utility model, the mounting panel 2 and the side beam 1 are designed independently of each other, and the electrical connector 3 is no longer directly mounted on the side beam 1, but is installed on the mounting panel 2. The mounting panel 2 is an independent panel, and is not limited by the CNC machine tool opening of the aluminum profile side beam 1 and the laser opening of the rolled steel side beam 1. A variety of opening methods can be selected, which is beneficial to improving production efficiency. Moreover, the electrical connector 3 is no longer directly mounted on the side beam 1, and its thickness is no longer limited. The optimal wall thickness can be designed as required, which is beneficial to the lightweight production of the whole vehicle.

[0064] like Figure 7 As shown, the side beam assembly of the above embodiment is installed near the lower right corner in the figure, and the side beam assembly and other beam bodies are surrounded by a frame and connected to the circumference of the bottom plate 8 to form a lower box. The electrical components in the battery pack are connected to one end of the electrical connector 3 exposed at the avoidance opening 101 on the side beam 1.

[0065] The utility model further provides a battery pack, comprising an upper box body (not shown), and also comprising the above-mentioned lower box body, wherein the upper box body covers the lower box body.

[0066] With the battery pack of the utility model, the mounting panel 2 and the side beam 1 are designed independently of each other, and the electrical connector 3 is no longer directly mounted on the side beam 1, but is installed on the mounting panel 2. The mounting panel 2 is an independent panel, and is not limited by the CNC machine tool opening of the aluminum profile side beam 1 and the laser opening of the rolled steel side beam 1. A variety of opening methods can be selected, which is beneficial to improving production efficiency. Moreover, the electrical connector 3 is no longer directly mounted on the side beam 1, and its thickness is no longer limited. The optimal wall thickness can be designed as required, which is beneficial to the lightweight production of the whole vehicle.

[0067] The utility model also provides a vehicle, comprising the battery pack described above.

[0068] In the vehicle adopting the utility model, the mounting panel 2 and the side beam 1 are designed independently of each other, and the electrical connector 3 is no longer directly mounted on the side beam 1, but is installed on the mounting panel 2. The mounting panel 2 is an independent panel, and is not limited by the CNC machine tool opening of the aluminum profile side beam 1 and the laser opening of the rolled steel side beam 1. A variety of opening methods can be selected, which is beneficial to improving production efficiency. Moreover, the electrical connector 3 is no longer directly mounted on the side beam 1, and its thickness is no longer limited. The optimal wall thickness can be designed as required, which is beneficial to the lightweight production of the whole vehicle.

[0069] As needed, the above technical solutions can be combined to achieve the best technical effect.

[0070] The above are only the principles and preferred embodiments of the present invention. It should be noted that, for those skilled in the art, on the basis of the principles of the present invention, several other modifications can be made, which should also be considered as the protection scope of the present invention.

Claims

1. A side beam assembly, characterized in that: include: A side beam, wherein a clearance opening is provided through the side beam; An installation panel is connected to the side beam, and an installation hole and a fixing hole are formed through the installation panel. The installation hole and the fixing hole are both arranged corresponding to the avoidance opening.

2. The side beam assembly according to claim 1, characterized in that: A glue storage groove is arranged on a side surface of the installation panel facing the side beam.

3. The side beam assembly according to claim 1 or 2, characterized in that: A sealing strip is arranged on a surface of one side of the installation panel facing away from the side beam.

4. The side beam assembly according to claim 1 or 2, characterized in that: Also includes: an electrical connector, wherein the electrical connector is partially embedded in the fixing hole; A mounting member passes through the electrical connector and the mounting hole to achieve connection between the electrical connector and the mounting panel.

5. The side beam assembly according to claim 4, characterized in that: A sealing rivet nut is fixed at at least one of the mounting holes on a side surface of the mounting panel facing the side beam.

6. The side beam assembly according to claim 4, characterized in that: The installation panel is provided with positioning holes; The electrical connector is provided with a positioning post, and the positioning post is arranged corresponding to the positioning hole.

7. The side beam assembly according to claim 1 or 2, characterized in that: The installation panel is provided with a plurality of first connection holes; A plurality of second connection holes are formed on the side beam, and the plurality of second connection holes are arranged in one-to-one correspondence with the plurality of first connection holes; The side beam assembly also includes a plurality of fixing members, which pass through the corresponding first connection holes and the second connection holes in sequence to achieve the connection between the mounting panel and the side beam.

8. The side beam assembly according to claim 1 or 2, characterized in that: The installation panel is provided with an avoidance groove in the circumference.

9. The side beam assembly according to claim 1 or 2, characterized in that: A wiring harness connector and a guard plate connector are arranged on the side beam.

10. The side beam assembly according to claim 1 or 2, characterized in that: The installation panel is integrally stamped and formed.

11. The side beam assembly according to claim 1 or 2, characterized in that: The ratio of the wall thickness at the connection between the side beam and the installation panel to the total thickness after the side beam and the installation panel are connected is 2:

7.

12. A lower box, comprising a bottom plate, characterized in that: It also includes the side beam assembly according to any one of claims 1 to 11, wherein the side beam of the side beam assembly is connected to the bottom plate.

13. A battery pack, comprising an upper box, characterized in that: It also includes the lower box body as described in claim 12, and the upper box body covers the lower box body.

14. A vehicle, characterized in that: Including the battery pack as claimed in claim 13.

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