Vehicle

Abstract

The embodiment of the application provides a vehicle, which comprises a vehicle body, a battery box, an equipotential connection block and a connecting piece; a first side of the equipotential connection block is welded to the vehicle body, a second side of the equipotential connection block is attached to the battery box, and the battery box, the equipotential connection block and the vehicle body are connected by the connecting piece and realize equipotential connection. The vehicle of the embodiment of the application simplifies the connecting structure and the equipotential connection structure of the power battery, and reduces the workload of adjustment design.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to a vehicle. BACKGROUND

[0002] The existing partial electric vehicles select to install the battery box on the longitudinal beam of the vehicle bottom, realize the structural connection of the vehicle longitudinal beam and the battery box through the connecting bolts, and further set the equipotential connection structure. The connecting cables of the equipotential connection structure are connected with the battery box and the vehicle longitudinal beam respectively, so as to realize the equipotential connection of the battery box and the vehicle body.

[0003] Among them, for the battery box with different capacities, the size will change, and the number of the connecting bolts and the number and position of the equipotential connection structure need to be redesigned and adjusted, which is complex in design and adjustment. SUMMARY

[0004] Therefore, the embodiments of the present application expect to provide a vehicle, which simplifies the design work of the power battery connection structure and the equipotential connection structure.

[0005] To achieve the above-mentioned purpose, the embodiments of the present application provide a vehicle, which comprises a vehicle body, a battery box, an equipotential connection block and a connecting piece. The first side of the equipotential connection block is welded to the vehicle body, and the second side of the equipotential connection block is attached to the battery box. The battery box, the equipotential connection block and the vehicle body are connected through the connecting piece and realize the equipotential connection.

[0006] In some embodiments, the equipotential connection block comprises a first metal block and a second metal block with different materials. The first metal block is located at the first side of the equipotential connection block, and the second metal block is located at the second side of the equipotential connection block. The first metal block and the second metal block are diffusion-combined at the interface.

[0007] In some embodiments, the material of the second metal block has the same corrosion potential as the material of the battery box, and the material of the battery box is aluminum alloy.

[0008] In some embodiments, the material of the first metal block has the same corrosion potential as the material of the vehicle body, and the material of the vehicle body is steel.

[0009] In some embodiments, the equipotential connection block and the surface of the vehicle body are provided with an anti-corrosion layer, and the second side of the equipotential connection block is in a bare state.

[0010] In some embodiments, the battery box comprises a shell and a mounting beam fixed to the shell. The second side of the equipotential connection block is attached to the mounting beam, and the material of the mounting beam is the same as that of the second side of the equipotential connection block.

[0011] In some embodiments, the number of mounting beams is two, which are welded to two sides of the shell respectively, and the material of the mounting beams is the same as that of the shell.

[0012] In some embodiments, the number of equipotential connecting blocks is multiple, which are arranged at intervals along the length direction of the mounting beams.

[0013] In some embodiments, the connecting member includes a bolt and a nut, the nut is welded to the side of the vehicle body away from the equipotential connecting block, and the bolt is fastened to the nut through the battery box, the equipotential connecting block, the vehicle body, and the nut.

[0014] In some embodiments, the vehicle body includes two longitudinal beams and a cross beam connecting the longitudinal beams, and the nut and the equipotential connecting block are welded to the upper and lower sides of the longitudinal beams, respectively.

[0015] The vehicle of the embodiment of the application welds the first side of the equipotential connecting block to the vehicle body, pastes the second side of the equipotential connecting block to the battery box, connects the battery box, the equipotential connecting block, and the vehicle body through the connecting member, and realizes equipotential connection. Since the vehicle body, the battery box, and the equipotential connecting block are all surface contact, the connection resistance is smaller, and the equipotential connection effect is good. Moreover, the equipotential connecting block forms a boss structure after being welded to the vehicle body, which can eliminate the installation cumulative error to a certain extent and reduce the installation precision requirement in the environment of multiple equipotential connecting blocks. In addition, for battery boxes of different specifications, sizes, and capacities, only the number of equipotential connecting blocks needs to be adjusted during design, so as to realize universal design and reduce the design workload. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 FIG. 1 is a structural schematic diagram of a vehicle body and a battery box of a vehicle according to an embodiment of the application;

[0017] Figure 2 FIG. 2 is a partial structural schematic diagram of the vehicle shown in FIG. 1; Figure 1

[0018] Figure 3 FIG. 3 is a structural schematic diagram of an equipotential connecting block of the vehicle shown in FIG. 1; Figure 2

[0019] FIG. 4 is a structural schematic diagram of a vehicle body and an equipotential connecting block of a vehicle according to an embodiment of the application. Figure 4 REFERENCE SIGNS

[0020] Vehicle body 10; longitudinal beam 11;

[0021]

[0022] ​​Battery box 20; housing 21; mounting beam 22;

[0023] Equipotential bonding block 30; first metal block 31; second metal block 32;

[0024] Connecting piece 40; bolt 41; nut 42. DETAILED DESCRIPTION

[0025] The embodiments of the present application will be further described below in conjunction with the drawings and examples. The following examples are used to illustrate the present application, but cannot be used to limit the scope of the present application.

[0026] In the description of the embodiments of the present application, it should be noted that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the embodiments of the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0027] A vehicle, please refer to Figure 1 , Figure 2 and Figure 4 , the vehicle comprises a vehicle body 10, a battery box 20, an equipotential bonding block 30 and a connecting piece 40.

[0028] The battery box 20 is used to load power batteries. The first side of the equipotential bonding block 30 is welded to the vehicle body 10, so that there is no air or water and other media between the equipotential bonding block 30 and the vehicle body 10, thereby avoiding the formation of a high-resistance oxide layer.

[0029] The second side of the equipotential bonding block 30 is attached to the battery box 20, so that the battery box 20 and the equipotential bonding block 30 are conductively attached.

[0030] The battery box 20, the equipotential bonding block 30 and the vehicle body 10 are connected by the connecting piece 40 and achieve equipotential connection. That is, the battery box 20 and the equipotential bonding block 30 are fixedly installed on the vehicle body 10 through the connecting piece 40, and at the same time the battery box 20, the equipotential bonding block 30 and the vehicle body 10 achieve equipotential connection. It can be understood that the battery box 20 and the vehicle body 10 are connected to the same potential, which makes the potential difference between any two points on the battery box 20 harmless to the human body even in the case of leakage.

[0031] In the above embodiment, the vehicle body 10, the battery box 20 and the equipotential connection block 30 are all in surface contact, the connection resistance is smaller, and the equipotential connection effect is good. Moreover, the equipotential connection block 30 forms a boss structure after being welded to the vehicle body 10, and in the environment where multiple equipotential connection blocks 30 are arranged, the equipotential connection block 30 can eliminate the installation cumulative error to a certain extent and reduce the installation precision requirement. Specifically, if there is no boss structure, the connection between the battery box 20 and the vehicle body 10 is a surface-to-surface fitting connection. At this time, since the through holes matched with the connecting piece 40 are arranged on the battery box 20 and the vehicle body 10, the through holes of the battery box 20 and the through holes of the vehicle body 10 need to be aligned one by one, and the precision is difficult to guarantee. By arranging the equipotential connection block 30, the connection between the battery box 20 and the vehicle body 10 relies on the height of each equipotential connection block 30, and at this time, the equipotential connection block 30 with the boss structure can absorb the precision error between the adjacent through holes through the height, thereby reducing the precision requirement.

[0032] In addition, for battery boxes 20 of different specifications, sizes and capacities, only the number of equipotential connection blocks 30 needs to be adjusted during design, so as to realize the universal design and reduce the design workload.

[0033] For example, referring to Figure 3 , the equipotential connection block 30 includes a first metal block 31 and a second metal block 32 with different materials, the first metal block 31 is located on the first side of the equipotential connection block 30, the second metal block 32 is located on the second side of the equipotential connection block 30, and the first metal block 31 and the second metal block 32 are diffusion-combined at the interface.

[0034] In some embodiments, the equipotential connection block is obtained by diffusion-combining the first metal block 31 and the second metal block 32 in a high-temperature and high-pressure environment.

[0035] For example, referring to Figure 2 and Figure 3 , the material of the second metal block 32 has the same corrosion potential as the material of the battery box 20, that is, in a natural state, the second metal block 32 and the battery box 20 will not cause electrochemical corrosion. Among them, the material of the battery box 20 is aluminum alloy, and the material of the second metal block 32 is also aluminum alloy.

[0036] For example, the material of the first metal block 31 has the same corrosion potential as the material of the vehicle body 10, that is, in a natural state, the first metal block 31 and the vehicle body 10 will not cause electrochemical corrosion. Among them, the material of the vehicle body 10 is steel, and the material of the first metal block 31 is also steel. In some embodiments, the equipotential connection block 30 is a steel-aluminum composite block.

[0037] In some embodiments, the second metal block 32 has a smaller area than the first metal block 31, so that a ring-shaped step is formed at the connecting position of the second metal block 32 and the first metal block 31.

[0038] For example, the equal-potential connecting block 30 and the surface of the vehicle body 10 are provided with a corrosion-resistant layer. The corrosion-resistant layer is used to avoid the oxidation corrosion of the equal-potential connecting block 30 and the vehicle body 10. In this case, the second side of the equal-potential connecting block 30 is in a bare state, that is, the second side of the equal-potential connecting block 30 is not provided with a corrosion-resistant layer, so that the connecting position of the second side of the equal-potential connecting block 30 and the battery box 20 maintains a low resistance. In this case, since the second side of the equal-potential connecting block 30 is made of aluminum alloy, a protective film is formed in the natural environment, and the combination of the corrosion-resistant layer makes the overall corrosion-resistant performance of the equal-potential connecting block 30 and the vehicle body 10 better.

[0039] It can be understood that, since the equal-potential connecting block 30 and the vehicle body 10 are welded, the corrosion-resistant layer is coated after welding.

[0040] In order to avoid that the corrosion-resistant layer is coated on the second side of the equal-potential connecting block 30 during construction, a covering film can be arranged on the second side of the equal-potential connecting block 30 before the corrosion-resistant layer process. After the corrosion-resistant layer process is completed, the covering film is removed, so as to achieve the effect that the second side of the equal-potential connecting block is in a bare state.

[0041] For example, as shown in Figure 1 and Figure 2 , the battery box 20 includes a shell 21 and a mounting beam 22 fixed to the shell 21. The second side of the equal-potential connecting block 30 is attached to the mounting beam 22, and the mounting beam 22 is made of the same material as the second side of the equal-potential connecting block 30.

[0042] In some embodiments, the number of the mounting beams 22 is two, which are respectively welded to the two sides of the shell 21, and the mounting beam 22 is made of the same material as the shell 21. That is, the material of the shell 21, the material of the mounting beam 22, and the material of the second side of the equal-potential connecting block 30 are the same, so that there is no electrochemical corrosion problem between the shell 21, the mounting beam 22, and the equal-potential connecting block 30. In some embodiments, the shell 21, the mounting beam 22, and the equal-potential connecting block 30 are all made of aluminum alloy, so that there is no chemical corrosion problem among them.

[0043] For example, as shown in Figure 4 , the number of the equal-potential connecting blocks 30 is multiple, and each of the equal-potential connecting blocks 30 is arranged at intervals along the length direction of the mounting beam 22. In this case, the equal-potential connecting block 30 and the connecting piece 40 are paired into groups, that is, the number of the connecting pieces 40 is multiple, and each of the connecting pieces 40 is arranged at one equal-potential connecting block 30.

[0044] For example, referring to Figure 2 The connecting member 40 includes a bolt 41 and a nut 42. The nut 42 is welded to the side of the vehicle body 10 away from the equipotential connecting block 30. The bolt 41 passes through the battery box 20, the equipotential connecting block 30, the vehicle body 10, and is fastened to the nut 42, thereby fixing the battery box 20 and the equipotential connecting block 30 to the vehicle body 10 and realizing equipotential connection. The middle part of the equipotential connecting block 30, the vehicle body, and the battery box 20 are all provided with through holes for the bolt 41 to pass through.

[0045] It can be understood that, since the nut 42 is welded to the vehicle body 10, the anticorrosive layer is coated after welding, and the anticorrosive layer is also coated on the nut 42.

[0046] In another embodiment, the connecting member 40 includes a bolt 41 and a threaded hole formed in the vehicle body 10. The bolt 41 passes through the battery box 20 and the equipotential connecting block 30 and is screwed into the threaded hole in the vehicle body 10.

[0047] For example, referring to Figure 1 The vehicle body 10 includes two longitudinal beams 11 and a cross beam connecting the longitudinal beams 11. The nut 42 and the equipotential connecting block 30 are welded to the upper and lower sides of the longitudinal beam 11, respectively. Correspondingly, the two mounting beams 22 of the battery box 20 are distributed below the longitudinal beam 11 and are fixedly connected to the longitudinal beam 11 by the connecting member 40.

[0048] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms is not necessarily for the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, different embodiments or examples described in the present application and the features of different embodiments or examples can be combined by those skilled in the art without contradiction.

[0049] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Those skilled in the art can make various changes and modifications to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A vehicle characterized by comprising: The vehicle comprises a vehicle body, a battery box, an equipotential connection block and a connecting piece; The first side of the equipotential connection block is welded to the vehicle body, and the second side of the equipotential connection block is attached to the battery box, so that the battery box, the equipotential connection block and the vehicle body are connected by the connecting piece and achieve equipotential connection; The vehicle body, the battery box and the equipotential connection block are all in surface contact, and the equipotential connection block forms a convex structure after being welded to the vehicle body; The equipotential connection block comprises a first metal block and a second metal block with different materials, the first metal block is located at the first side of the equipotential connection block, the second metal block is located at the second side of the equipotential connection block, the first metal block and the second metal block are diffusion-combined at the interface, the material of the first metal block has the same corrosion potential as the material of the vehicle body, and the material of the second metal block has the same corrosion potential as the material of the battery box.

2. A vehicle as claimed in claim 1, characterised in that The material of the battery box is aluminum alloy.

3. A vehicle as claimed in claim 1, wherein, The material of the vehicle body is steel.

4. A vehicle as claimed in claim 1, wherein, The equipotential connection block and the surface of the vehicle body are provided with an anti-corrosion layer, and the second side of the equipotential connection block is in a bare state.

5. A vehicle as claimed in claim 1, wherein, The battery box comprises a shell and a mounting beam fixed to the shell, the second side of the equipotential connection block is attached to the mounting beam, and the material of the mounting beam is the same as that of the second side of the equipotential connection block.

6. A vehicle as claimed in claim 5, wherein The number of the mounting beams is two, which are welded to the two sides of the shell respectively, and the material of the mounting beam is the same as that of the shell.

7. A vehicle as claimed in claim 5, wherein The number of the equipotential connection blocks is multiple, and each equipotential connection block is arranged at intervals along the length direction of the mounting beam.

8. A vehicle as claimed in claim 1 wherein, The connecting piece comprises a bolt and a nut, the nut is welded to the side of the vehicle body away from the equipotential connection block, and the bolt is fastened to the nut through the battery box, the equipotential connection block and the vehicle body.

9. A vehicle as claimed in claim 8, characterised in that The vehicle body comprises two longitudinal beams and a cross beam connecting the longitudinal beams, and the nut and the equipotential connection block are welded to the upper and lower sides of the longitudinal beams respectively.

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