Vehicle

Abstract

An embodiment of the present application provides a vehicle, which includes a vehicle body, a battery box body, and an equipotential connection assembly. The equipotential connection assembly is electrically connected to the vehicle body and the battery box body; the equipotential connection assembly includes a conductive member connected to each other and at least one composite metal block disposed on the conductive member; the composite metal block includes a first metal block and a second metal block with different materials. The first metal block and the second metal block are diffusion bonded at the interface. The battery box body and / or the vehicle body are connected to the corresponding first metal block, and the material of the battery box body and / or the vehicle body connected to the first metal block has the same corrosion potential as the material of the corresponding first metal block. The second metal block is connected to the conductive member, and the material of the second metal block has the same corrosion potential as the conductive member. In the vehicle according to the embodiment of the present application, the vehicle body and the battery box body are equipotentially connected, and the corrosion resistance is good.

Description

Technical Field

[0001] This application relates to the technical field of vehicles, and particularly to a vehicle. Background Art

[0002] The power battery and the vehicle body are connected by a connecting cable to achieve equipotential connection, thereby avoiding harm to the human body when the power battery leaks electricity. Among them, the connecting cable uses materials with high conductivity such as copper or aluminum, while the vehicle body and the power battery housing are made of high-strength steel. During use, corrosion problems are likely to occur at the connection points of the connecting cable with the vehicle body and the power battery. Summary of the Invention

[0003] In view of this, the embodiments of this application are expected to provide a vehicle in which the vehicle body and the power battery housing are equipotentially connected and have good corrosion resistance.

[0004] To achieve the above object, the embodiments of this application provide a vehicle, which includes a vehicle body, a battery box, and an equipotential connection component. The equipotential connection component is electrically connected to the vehicle body and the battery box; the equipotential connection component includes a conductive member and at least one composite metal block disposed on the conductive member. A conduction path is established between the first end of the conductive member and the vehicle body through the composite metal block, and / or a conduction path is established between the second end of the conductive member and the battery box through the composite metal block; the composite metal block includes a first metal block and a second metal block with different materials. The first metal block and the second metal block are diffusion-bonded at the interface. The battery box and / or the vehicle body is connected to the corresponding first metal block, and the material of the battery box and / or the vehicle body connected to the first metal block has the same corrosion potential as the material of the corresponding first metal block. The second metal block is connected to the conductive member, and the material of the second metal block has the same corrosion potential as the conductive member.

[0005] In some embodiments, the first metal block connected to the vehicle body is welded and fixed to the vehicle body.

[0006] In some embodiments, a first anti-corrosion layer is coated on the surface of the composite metal block connected to the vehicle body and the vehicle body, so that the side of the composite metal block connected to the vehicle body away from the vehicle body is exposed.

[0007] In some embodiments, the first metal block connected to the battery box is welded and fixed to the battery box.

[0008] In some embodiments, a second anti-corrosion layer is coated on the surface of the composite metal block connected to the battery box and the battery box, so that the side of the composite metal block connected to the battery box away from the battery box is exposed.

[0009] In some embodiments, the composite metal block includes at least two positioning protrusions, and the at least two positioning protrusions are disposed on a surface of the first metal block away from the second metal block. The positioning protrusions are used to cooperate with positioning grooves on the vehicle body or the battery box body.

[0010] In some embodiments, the first metal block is made of steel, and the vehicle body and / or the battery box body connected to the first metal block are made of steel.

[0011] In some embodiments, the second metal block is made of aluminum alloy, and the conductive member is made of aluminum alloy; or the second metal block is made of copper alloy, and the conductive member is made of copper alloy.

[0012] In some embodiments, the conductive member includes a plurality of horizontal portions and connecting portions connecting adjacent horizontal portions. At least part of the horizontal portions are attached to the composite metal block, and the projections of the horizontal portions on the horizontal plane are offset.

[0013] In some embodiments, in any one of the conductive members, two adjacent horizontal portions are at different heights.

[0014] In some embodiments, the vehicle includes a structural fixing member, and the battery box body is fixed to the vehicle body through the structural fixing member.

[0015] In some embodiments, the equipotential connection assembly includes a plurality of bolts and a plurality of nuts paired with the bolts. The first end of the conductive member is connected to the vehicle body through the bolts and the nuts, and the second end of the conductive member is connected to the battery box body through the bolts and the nuts.

[0016] In the vehicle according to the embodiment of the present application, the vehicle body and the battery box body are equipotentially connected through an equipotential connection assembly. The equipotential connection assembly includes a conductive member and at least one composite metal block disposed at an end of the conductive member. A conduction path is established between the first end of the conductive member and the vehicle body through the composite metal block, and / or a conduction path is established between the second end of the conductive member and the battery box body through the composite metal block. The composite metal block includes a first metal block and a second metal block with different materials. The corrosion potential of the battery box body or the vehicle body is equal to that of the corresponding first metal block, and the corrosion potential of the second metal block is equal to that of the conductive member. Thereby, there is no electrochemical corrosion between the first metal block of the composite metal block and the battery box body and / or the vehicle body, and there is no electrochemical corrosion between the first metal block of the composite metal block and the conductive member, so that there is no electrochemical corrosion phenomenon at the connection part of the equipotential connection assembly, the vehicle body, and the battery box body, and the connection stability is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of a vehicle according to an embodiment of the present application;

[0018] Figure 2 is Figure 1 a schematic structural view of a composite metal block of the vehicle shown;

[0019] Figure 3 is Figure 1 a schematic structural view of a conductive member of the vehicle described;

[0020] Figure 4 is Figure 1 a schematic structural view of an equipotential connection assembly of the vehicle shown;

[0021] Figure 5 is Figure 1 another schematic structural view of an equipotential connection assembly of the vehicle shown.

[0022] Description of reference numerals

[0023] Vehicle body 10; battery box 20; rib 21; equipotential connection assembly 30; conductive member 31; horizontal portion 311; connecting portion 312; composite metal block 32; first metal block 321; second metal block 322; positioning protrusion 323; bolt 33; nut 34. Detailed implementation manners

[0024] The following further describes in detail the implementation manners of the present application in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the present application, but cannot be used to limit the scope of the present application.

[0025] In the description of the embodiments of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the embodiments of the present application. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0026] The embodiments of the present application provide a vehicle. Please refer to Figure 1 , the vehicle includes a vehicle body 10, a battery box 20, and an equipotential connection assembly 30. The equipotential connection assembly 30 is electrically connected to the vehicle body 10 and the battery box 20 to make the vehicle body 10 and the battery box 20 equipotentially connected.

[0027] Please refer to Figures 1-4, the equipotential connection component 30 includes a conductive member 31 and at least one composite metal block 32 disposed on the conductive member 31, which are connected to each other. A conduction path is established between the first end of the conductive member 31 and the vehicle body 10 through the composite metal block 32, and / or a conduction path is established between the second end of the conductive member 31 and the battery box 20 through the composite metal block 32. Herein, establishing a conduction path can be understood as electrical connection.

[0028] It can be understood that in some embodiments, a composite metal block 32 is disposed at the first end of the conductive member 31. A conduction path is established between the first end of the conductive member 31 and the vehicle body 10 through the composite metal block 32, and a conduction path is directly established between the second section of the conductive member 31 and the battery box 20.

[0029] In some embodiments, a composite metal block 32 is disposed at the second end of the conductive member 31. A conduction path is directly established between the first end of the conductive member 31 and the vehicle body 10, and a conduction path is established between the second end of the conductive member 31 and the battery box 20 through the composite metal block 32.

[0030] In some embodiments, composite metal blocks 32 are disposed at the first end and the second end of the conductive member 31. A conduction path is established between the first end of the conductive member 31 and the vehicle body 10 through the composite metal block 32, and a conduction path is established between the second end of the conductive member 31 and the battery box 20 through the composite metal block 32.

[0031] In some embodiments, please refer to Figure 5 , composite metal blocks 32 are disposed at the first end, the second end, and the part between the first end and the second end of the conductive member 31. A conduction path is established between the first end of the conductive member 31 and the vehicle body 10 through the composite metal block 32, a conduction path is established between the second end of the conductive member 31 and the vehicle body 10 through the composite metal block 32, and a conduction path is established between the part between the first end and the second end of the conductive member 31 and the battery box 20 through the composite metal block 32.

[0032] Please refer to Figure 2 , the composite metal block 32 includes a first metal block 321 and a second metal block 322 with different materials, and the first metal block 321 and the second metal block 322 are diffusion - bonded at the interface. It should be understood that the composite metal block 32 is an integral structure obtained by laminating and then bonding the first metal block 321 and the second metal block 322.

[0033] Please refer to Figure 4, the battery box body 20 and / or the vehicle body 10 are connected to the corresponding first metal block 321, and the corrosion potential of the battery box body 20 and / or the vehicle body 10 connected to the first metal block 321 is equal to that of the corresponding first metal block 321. That is to say, in the natural state, no electrochemical corrosion will occur between the battery box body 20 and / or the vehicle body 10 connected to the first metal block 321 and the corresponding first metal block 321.

[0034] The second metal block 322 is connected to the conductive member 31, and the corrosion potential of the second metal block 322 is equal to that of the conductive member 31. That is to say, in the natural state, no electrochemical corrosion will occur between the second metal block 322 and the conductive member 31.

[0035] By making the corrosion potential of the battery box body 20 or the vehicle body 10 equal to that of the corresponding first metal block 321, and the corrosion potential of the second metal block 322 equal to that of the conductive member 31. In this way, no electrochemical corrosion occurs between the first metal block 321 of the composite metal block 32 and the battery box body 20 and / or the vehicle body 10, and no electrochemical corrosion occurs between the first metal block 321 of the composite metal block 32 and the conductive member 31, thereby solving the problem of electrochemical corrosion at the connection part of the equipotential connection assembly 30, the vehicle body 10, and the battery box body 20.

[0036] Exemplarily, the first metal block 321 connected to the vehicle body 10 is welded and fixed to the vehicle body 10. So that no medium such as air or water can enter between the composite metal block 32 and the vehicle body 10, avoiding the formation of a high-resistance oxide layer and affecting the equipotential connection.

[0037] Exemplarily, a first anti-corrosion layer is coated on the surface of the composite metal block 32 connected to the vehicle body 10 and the vehicle body 10, and this anti-corrosion layer is used to avoid oxidation corrosion of the composite metal block 32 and the vehicle body 10. The side of the composite metal block 32 connected to the vehicle body 10 away from the vehicle body 10 is exposed. That is to say, no anti-corrosion layer is provided on the side of the composite metal block 32 away from the vehicle body 10, so as to keep the connection position between the composite metal block 32 and the conductive member 31 at a low resistance.

[0038] It can be understood that since the first metal block 321 connected to the vehicle body 10 is welded and fixed to the vehicle body 10, that is, the composite metal block 32 is welded and fixed to the vehicle body 10, the coating of this anti-corrosion layer is carried out after welding.

[0039] In order to avoid the anti-corrosion layer being coated on the side of the composite metal block 32 connected to the vehicle body 10 away from the vehicle body 10 during the construction of the anti-corrosion layer, a covering film can be set on the side of the composite metal block 32 connected to the vehicle body 10 away from the vehicle body 10 before the anti-corrosion layer process, and the covering film is removed after the anti-corrosion layer process ends.

[0040] Exemplarily, the first metal block 321 connected to the battery box body 20 is welded and fixed to the battery box body 20, so that no medium such as air or water can enter between the composite metal block 32 and the battery box body 20, avoiding the formation of a high-resistance oxide layer and affecting the equipotential connection.

[0041] In some embodiments, please refer to Figure 1 , ribs 21 protruding outward are formed on the battery box body 20, and the composite metal block 32 is welded and fixed on the ribs 21, and it is not easy to deform under force after welding.

[0042] In some embodiments, please refer to Figure 1 , there are nine conductive members 31, and the ribs 21 of the battery box body 20 are arranged in three vertical and two horizontal rows. Three conductive members 31 are correspondingly arranged at both ends of the three vertically arranged ribs 21, totaling six conductive members 31. Two conductive members 31 corresponding to each other are arranged at one end of the two horizontally arranged ribs 21, and one conductive member 31 is arranged at the other end, totaling three conductive members 31. Among them, in one conductive member 31 at the other end of the horizontally arranged ribs 21, the first end and the second end of the conductive member 31 are respectively connected to the two horizontally arranged ribs 21, and the part between the first end and the second end of the conductive member 31 is connected to the battery box body 20.

[0043] Exemplarily, a second anti-corrosion layer is coated on the surface of the composite metal block 32 connected to the battery box body 20, and this second anti-corrosion layer is used to avoid oxidation and corrosion of the composite metal block 32 and the battery box body 20. Among them, the above-mentioned first anti-corrosion layer and second anti-corrosion layer can be anti-corrosion paint layers.

[0044] The side of the composite metal block 32 connected to the battery box body 20 away from the battery box body 20 is exposed. That is to say, no anti-corrosion layer is provided on the side of the composite metal block 32 away from the battery box body 20, so as to keep the connection position between the composite metal block 32 and the conductive member 31 at a low resistance.

[0045] Exemplarily, the material of the first metal block 321 is steel, and the material of the vehicle body 10 and / or the battery box body 20 connected to the first metal block 321 is steel. The welding process of steel and steel is mature, the welding cost is low, and the welding quality is reliable.

[0046] Exemplarily, the material of the second metal block 322 is aluminum alloy, and the material of the conductive member 31 is aluminum alloy. Or the material of the second metal block 322 is copper alloy, and the material of the conductive member 31 is copper alloy. Copper alloy and aluminum alloy have better corrosion resistance in the natural environment.

[0047] In the related art, since both the vehicle body 10 and the battery system housing are made of steel and their surfaces are coated with anti-corrosion paint, when the conductive cable or conductive copper braid is connected to the battery box 20 and the vehicle body 10, the paint on the contact surface will greatly increase the resistance of the equipotential device. If the paint on the connection surface is scraped off, it will cause corrosion of the battery box 20 and the vehicle body 10.

[0048] This embodiment provides a composite metal block 32 of steel-aluminum composite or steel-copper composite. The steel block of the composite metal block 32 is fixed by welding, and then an anti-corrosion paint layer is provided, and the aluminum surface or copper surface of the composite metal block 32 is exposed, so as to avoid the problem of chemical corrosion to a large extent while meeting the requirements of equipotential connection. In addition, the problem of electrochemical corrosion is also avoided.

[0049] Exemplarily, please refer to Figure 2 , the composite metal block 32 includes at least two positioning protrusions 323, and the at least two positioning protrusions 323 are arranged on a surface of the first metal block 321 away from the second metal block 322. The positioning protrusions 323 are used to cooperate with the positioning grooves on the vehicle body 12 or the battery box 20. Specifically, before the welding operation, the composite metal block 32 is restricted at a preset welding position by the cooperation of the positioning protrusions 323 and the positioning grooves, so as to facilitate welding.

[0050] In some embodiments, the number of the positioning protrusions 323 is two, which are distributed at two corners of the first metal block 321, and the line connecting the two corners passes through the center of the first metal block 321. This makes the distance between the two positioning protrusions 323 larger, so as to maintain better positioning accuracy.

[0051] Exemplarily, please refer to Figure 3 , the conductive member 31 includes a plurality of horizontal portions 311 and connecting portions 312 connecting adjacent horizontal portions 311. At least part of the horizontal portions 311 are attached to the composite metal block 32, and the projections of the horizontal portions 311 on the horizontal plane are offset.

[0052] Exemplarily, in any one of the conductive members 31, two adjacent horizontal portions 311 are at different heights.

[0053] Specifically, if composite metal blocks 32 are provided on both the vehicle body 10 and the battery box 20, among two adjacent horizontal portions 311, one horizontal portion 311 is connected to the composite metal block 32 connected to the battery box 20, and the other horizontal portion 311 is connected to the composite metal block 32 connected to the vehicle body 10. The top surface height of the rib 21 is higher than that of the vehicle body 10, so two adjacent horizontal portions 311 are at different heights to adapt to the height difference between the rib 21 and the vehicle body 10.

[0054] In some embodiments, the conductive member 31 is integrally formed by stamping to reduce the mass production cost. The conductive member 31 is bent between the connecting portion 312 and the horizontal portion 311, and the bending angle is an obtuse angle, so that adjacent two horizontal portions 311 are misaligned, and at the same time, the height difference of the rib 21 between the vehicle body 10 and the battery box 20 is adapted.

[0055] Exemplarily, please refer to Figure 4 , the equipotential connection assembly 30 includes a plurality of bolts 33 and a plurality of nuts 34 paired with the bolts 33. The first end of the conductive member 31 is connected to the vehicle body 10 through the bolts 33 and the nuts 34, and the second end of the conductive member 31 is connected to the battery box 20 through the bolts 33 and the nuts 34.

[0056] In some embodiments, through holes are formed in the horizontal portion 311 of the conductive member 31, the composite metal block 32, as well as the vehicle body 10 and the battery box 20, so that one end of the bolt 33 passes through the through hole and the nut 34 is screwed to fix.

[0057] Exemplarily, the vehicle includes a structural fixing member, and the battery box 20 is fixed to the vehicle body 10 through the structural fixing member. Specifically, the battery box 20 is disposed above the vehicle body 10, and the two are structurally connected through the structural fixing member and are equipotentially connected through the equipotential connection assembly 30. The structural fixing member can be a bolt and a nut.

[0058] In the description of the present application, the description referring to terms such as "one embodiment", "some embodiments", "example", "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 embodiments of the present application. In the present application, the schematic expression of the above terms is not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine the different embodiments or examples described in the present application and the features of different embodiments or examples.

[0059] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A vehicle, characterized in that, The vehicle includes a vehicle body, a battery box, and an equipotential connection assembly. The equipotential connection assembly is electrically connected to the vehicle body and the battery box; The equipotential connection assembly includes a conductive member and at least one composite metal block disposed on the conductive member. A conductive path is established between the first end of the conductive member and the vehicle body through the composite metal block, and / or a conductive path is established between the second end of the conductive member and the battery box through the composite metal block; The composite metal block includes a first metal block and a second metal block with different materials. The first metal block and the second metal block are diffusion-bonded at the interface. The battery box and / or the vehicle body is connected to the corresponding first metal block, and the material of the battery box and / or the vehicle body connected to the first metal block has the same corrosion potential as the material of the corresponding first metal block. The second metal block is connected to the conductive member, and the material of the second metal block has the same corrosion potential as the conductive member; The composite metal block is an integral structure obtained by laminating and bonding the first metal block and the second metal block.

2. A vehicle according to claim 1, wherein The first metal block connected to the vehicle body is welded and fixed to the vehicle body.

3. A vehicle according to claim 2, characterized in that, A first anti-corrosion layer is coated on the surface of the composite metal block connected to the vehicle body and the vehicle body, so that the side of the composite metal block connected to the vehicle body away from the vehicle body is exposed.

4. A vehicle according to claim 1, characterized in that, The first metal block connected to the battery box is welded and fixed to the battery box.

5. A vehicle according to claim 4, characterized in that, A second anti-corrosion layer is coated on the surface of the composite metal block connected to the battery box and the battery box, so that the side of the composite metal block connected to the battery box away from the battery box is exposed.

6. A vehicle according to claim 1, wherein, The composite metal block includes at least two positioning protrusions. The at least two positioning protrusions are disposed on the surface of the first metal block away from the second metal block, and the positioning protrusions are used to cooperate with positioning grooves on the vehicle body or the battery box.

7. A vehicle according to claim 2 or 4, characterized in that, The material of the first metal block is steel, and the material of the vehicle body and / or the battery box connected to the first metal block is steel.

8. A vehicle according to claim 1, characterized in that, The material of the second metal block is aluminum alloy, and the material of the conductive member is aluminum alloy; or The material of the second metal block is copper alloy, and the material of the conductive member is copper alloy.

9. A vehicle according to claim 1, characterized in that, The conductive member includes a plurality of horizontal portions and connecting portions connecting adjacent horizontal portions. At least part of the horizontal portions are attached to the composite metal block, and the projections of the horizontal portions on the horizontal plane are misaligned.

10. A vehicle according to claim 9, characterized in that, In any one of the conductive members, two adjacent horizontal portions are at different heights.

11. A vehicle according to claim 1, wherein, The vehicle includes a structural fixing member, and the battery box is fixed to the vehicle body through the structural fixing member.

12. A vehicle according to claim 1, wherein, The equipotential connection assembly includes a plurality of bolts and a plurality of nuts paired with the bolts. The first end of the conductive member is connected to the vehicle body through the bolts and the nuts, and the second end of the conductive member is connected to the battery box through the bolts and the nuts.

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