Battery frame and electric vehicle frame equipped with the same

Abstract

The present invention relates to a reinforced battery frame having reinforcing members at the front and rear of the battery frame, and an electric vehicle frame including the same, and the battery frame includes a first subframe that defines a battery area where a battery is located, is formed to surround at least a part of the battery area, and is arranged parallel to a first direction which is the length direction of the vehicle, a second subframe that is positioned at a distance from the first subframe in a second direction which is the width direction of the vehicle that is larger than or the same as the battery area, a third subframe that is connected to one end of the first subframe and the second subframe and is arranged in the second direction, and a fourth subframe that is connected to the other end of the first subframe and the second subframe, wherein a hollow portion is formed inside the third subframe or the fourth subframe, and the electric vehicle frame includes a reinforcing member that is arranged in the hollow portion and abuts against the third subframe or the fourth subframe, and when viewed from the third direction which is the height direction of the vehicle, the first subframe to the fourth subframe are connected as one to surround the battery area.

Description

[Technical Field]

[0001] The present invention relates to a reinforced battery frame provided with reinforcing members at the front and rear of the battery frame, and an electric vehicle frame provided with the same. [Background technology]

[0002] 2. Description of the Related Art In general, a vehicle having a body-on-frame structure has a body structure formed by assembling a frame constituting a lower portion and a body including a passenger seating space.

[0003] Unlike conventional body structures, electric vehicles typically place the battery inside the frame. When a battery is installed, a typical body-on-frame body structure makes it difficult to protect the battery from a collision without additional reinforcement.

[0004] Furthermore, since the frame is configured to be as wide as possible in the width direction of the vehicle to secure space for the battery, it becomes more difficult to prevent deformation of the frame in the event of an external collision, and therefore structural reinforcement is required to protect the battery. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Korean Patent Publication No. 10-2022-0093234 (Published on July 5, 2022) Summary of the Invention [Problem to be solved by the invention]

[0006] SUMMARY OF THE INVENTION The present invention is intended to solve the above problems and aims to provide an electric vehicle battery frame structure that can protect against front and rear impacts. [Means for solving the problem]

[0007] In order to achieve the above object, the present invention provides a battery frame formed as follows.

[0008] In one embodiment of the present invention, a battery area where a battery is located is defined, and the vehicle includes a first subframe that is formed to surround at least a portion of the battery area and is arranged parallel to a first direction which is the length direction of the vehicle, a second subframe that is positioned at a distance from the first subframe in a second direction which is the width direction of the vehicle that is larger than or the same as the battery area, a third subframe that is connected to one end of the first subframe and the second subframe and is arranged in the second direction, and a fourth subframe that is connected to the other end of the first subframe and the second subframe, wherein a hollow portion is formed inside the third subframe or the fourth subframe, and the vehicle further includes a reinforcing member that is arranged in the hollow portion and abuts against the third subframe or the fourth subframe, and when viewed from the third direction which is the height direction of the vehicle, the first subframe to the fourth subframe are connected as one to surround the battery area.

[0009] The third subframe or fourth subframe includes an inner member forming an inner surface that abuts the battery area, and an outer member that is connected to the inner member at both ends in the third direction and whose cross section parallel to the first direction when connected to the inner member forms the hollow portion, and the reinforcing member can contact the outer member.

[0010] The reinforcing member may be a hollow pipe.

[0011] The outer member may further include a bracket for fixing the reinforcing member, the bracket including a receiving groove for receiving the reinforcing member and a flat surface portion coupled to the outer member.

[0012] The bracket may have a plurality of receiving grooves formed therein, the bracket may extend in the third direction, and a plurality of the brackets may be provided along the second direction, and a plurality of the reinforcing members may be provided along the third direction.

[0013] At least a portion of the reinforcing member may be in contact with the first subframe or the second subframe, and the contacting first subframe or the second subframe and the end of the reinforcing member may be connected by the bracket.

[0014] the reinforcing member is a first reinforcing member provided in a plurality along the third direction and having both ends bent so as to contact the first sub-frame and the second sub-frame;

[0015] The frame may include a second reinforcing member that is shorter in length than the first reinforcing member, has one end in contact with the first sub-frame or the second sub-frame, and has the other end coupled to the third sub-frame or the fourth sub-frame.

[0016] The inner member and the outer member are in surface contact at one end and in line contact at the other end, and the inner member and the bracket can be spaced apart.

[0017] An electric vehicle frame according to one embodiment of the present invention includes a battery frame according to any one of claims 1 to 6, which defines a battery area in which a battery is located and is formed to surround the battery area, a front frame and a rear frame which are connected to the battery frame in a first direction which is the longitudinal direction of the vehicle, a floor which covers at least one side of the battery area and is connected to the battery frame, and a cross member which is connected to the floor and is located outside the battery area. [Effects of the Invention]

[0018] With the above-described configuration, the present invention can provide the effect of having high resistance to initial deformation and minimizing deformation due to an external load.

[0019] This provides the advantage that no additional space is required for reinforcement and the battery area can be maximized. [Brief explanation of the drawings]

[0020] [Figure 1] 1 is a perspective view of an existing body-on-frame vehicle structure. [Figure 2] 1 is a perspective view of a battery frame according to an embodiment of the present invention. FIG. [Figure 3] FIG. 10 is an exploded view of a third subframe and a fourth subframe according to an embodiment of the present invention. [Figure 4] FIG. 10 is a cross-sectional view of a third sub-frame according to an embodiment of the present invention. [Figure 5] 1 is a perspective view of a bracket according to an embodiment of the present invention. [Figure 6] 10A and 10B are diagrams illustrating a reinforcing member coupled to the interior of a first sub-frame according to one embodiment of the present invention. [Figure 7] 1 is a diagram showing a frame of an electric vehicle according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0021] Hereinafter, specific embodiments of the present invention will be described with reference to the accompanying drawings. However, the concept of the present invention is not limited to the examples shown, and a person skilled in the art who understands the concept of the present invention may easily propose other degenerate inventions or other embodiments within the concept of the present invention by adding, changing, or deleting other components within the scope of the same concept, which may also be considered to be within the scope of the concept of the present invention.

[0022] FIG. 1 shows a perspective view of an existing body-on-frame vehicle structure.

[0023] In a conventional body-on-frame vehicle, a frame F is formed by combining a longitudinal member 1 extending in the length direction of the vehicle with a lateral member 2 extending in the width direction of the vehicle, and a body including a passenger space is combined on top of the frame F.

[0024] However, because electric vehicles must be equipped with a battery pack, there must be a battery area in which the battery pack is installed. To maximize this, an area as wide as possible must be present in the width direction of the vehicle, and a reinforcing structure is required to prevent the structural rigidity from becoming weaker than existing structures.

[0025] The present invention aims to solve the above problems by maximizing the battery area and preventing deformation even when an impact is transmitted to a battery located in the battery area due to a longitudinal impact from the front or rear.

[0026] Fig. 2 is a perspective view of a battery frame according to one embodiment of the present invention. Fig. 3 is an exploded view of the third and fourth subframes, and Fig. 4 is a cross-sectional view of the third subframe. Fig. 5 is a perspective view of a bracket according to one embodiment of the present invention, and Fig. 5 is a diagram showing how a reinforcing member is connected to the inside of the first subframe. Fig. 4 shows a cross-sectional view of the third subframe, but the fourth subframe may also have a similar cross-section.

[0027] The battery frame 100 according to the embodiment of the present invention includes a first sub-frame 10, a second sub-frame 20, a third sub-frame 30, a fourth sub-frame 40, and a reinforcing member 50.

[0028] A battery region where the battery is located may be defined, and the first to fourth sub-frames 10 to 40 may be disposed around the battery region. When viewed from a third direction, which is the height direction of the vehicle, the first to fourth sub-frames 10 to 40 may be connected together to form a shape that surrounds the battery region. That is, the battery frame 100 including the first to fourth sub-frames 10 to 40 may have a loop shape in appearance.

[0029] The first sub-frame 10 is formed to surround at least a portion of the battery area, and can be disposed parallel to a first direction, which is the length direction of the vehicle.

[0030] The second sub-frame 20 may be positioned at a distance equal to or greater than the battery area from the first sub-frame 10 in a second direction, which is the width direction of the vehicle.

[0031] The first sub-frame 10 and the second sub-frame 20 may be arranged symmetrically to each other in a first direction, or may be arranged parallel to each other. The first sub-frame 10 and the second sub-frame 20 may serve to protect the battery or battery pack from external impact in a second direction.

[0032] The third sub-frame 30 may be connected to one end of the first sub-frame 10 and one end of the second sub-frame 20 and disposed in the second direction.

[0033] The fourth sub-frame 40 is connected to the other ends of the first and second sub-frames 10 and 20, and may be disposed symmetrically with or parallel to the third sub-frame 30.

[0034] The third sub-frame 30 and the fourth sub-frame 40 can play a role in protecting the battery or the battery pack from an external impact in a first direction.

[0035] The third sub-frame 30 or the fourth sub-frame 40 may include an inner member 32, 42 and an outer member 31, 41.

[0036] The following describes the inner member 32 and outer member 31 of the third sub-frame 30. The same applies to the inner member 42 and outer member 41 of the fourth sub-frame 40.

[0037] As an example, the inner member 32 may be located close to the battery area where the battery is located, and may have an inner surface that abuts against the battery area.

[0038] For example, the inner member 32 may have a predetermined length in the third direction, extend in the second direction, and include a protrusion 32a protruding outside the battery area.

[0039] In addition, an inner flange 32b is formed at one end of the inner member 32, and is bent outward to form a flat inner flange. The inner flange 32b can be coupled to the outer member 31.

[0040] The outer member 31 is coupled to the inner member 32 at both ends in the third direction, and when coupled to the inner member 32, a cross section parallel to the first direction can form a hollow portion S.

[0041] For example, the outer member 31 may have a predetermined length in the third direction and extend in the second direction, and the inner member 32 may be coupled to both ends of the outer member 31 .

[0042] For example, the inner member 32 and the outer member 31 may be in surface contact at one end and in line contact at the other end.

[0043] Outer flanges 31a and 31b may be formed at the ends of the outer member 31. When the outer flange 31a formed at one end is coupled to the inner flange 32b, the flanges may overlap each other and then be fixed together by mechanical coupling such as screws and bolts or by welding.

[0044] The outer flange 31b formed at the other end may be coupled to the other end of the inner member 32 where the inner flange 32b is not formed. In this case, the outer flange 31b and one end of the inner member 32 may be in line contact with each other.

[0045] As an example, a step may be formed on the outer flange 31b, and one end of the inner member 32 may be configured to be locked onto the step.

[0046] The outer member 31 is connected to both ends of the inner member 32, and a hollow portion S is formed inside, so that when the inner member 32 and the outer member 31 are connected, the cross section parallel to the first direction can be a closed cross section.

[0047] The shapes of the inner member 32 and the outer member 31 are not limited to the shapes described above, and may include any configuration that forms a hollow cross section inside.

[0048] Since the impact in the first direction is transmitted to the battery area through the third sub-frame 30 and the fourth sub-frame 40, a reinforcing member 50 may be further included inside the third sub-frame 30 or the fourth sub-frame 40 to prevent the battery from being impacted by the impact.

[0049] A hollow portion S may be formed inside the third sub-frame 30 or the fourth sub-frame 40. Therefore, a cross section cut in the first direction may have a cross-sectional shape that is hollow inside. A reinforcing member 50 can be disposed in the hollow portion S.

[0050] The reinforcing member 50 may be in contact with the third sub-frame 30 or the fourth sub-frame 40.

[0051] The reinforcing member 50 is positioned in contact with the third sub-frame 30 or the fourth sub-frame 40 to prevent the battery from being deformed by an external impact in the first direction. The reinforcing member 50 is positioned in the hollow portion S of the third sub-frame 30 or the fourth sub-frame 40 to prevent deformation due to an impact.

[0052] Since the reinforcing member 50 is provided in the hollow portion S, no special space is required for reinforcement, and the battery area can be maintained as is.

[0053] As an example, the reinforcing member 50 can contact the outer members 31, 41.

[0054] An external impact in the first direction is first transmitted to the outer member 31, 41 of the third sub-frame 30 or the fourth sub-frame 40, causing the outer member 31, 41 to begin to deform under the influence of the impact. Therefore, it can be effective to support the impact transmitted to the outer member 31, 41 and prevent deformation.

[0055] The reinforcing member 50 is a member for increasing resistance to deformation due to an external impact and minimizing deformation, and therefore, it is necessary to form the reinforcing member 50 so that deformation itself is difficult.

[0056] As an example, the reinforcing member 50 may be in the shape of a hollow pipe.

[0057] When a collision occurs in the first direction, a bending load is applied to the third subframe 30 or the fourth subframe 40. Because a circular cross section has the highest deformation resistance to the bending load, the reinforcing member 50 of the third subframe 30 or the fourth subframe 40 may be shaped like a hollow pipe with a circular cross section.

[0058] To further increase the deformation resistance to bending loads, the reinforcing member 50 may be provided with a plurality of pipes.

[0059] For example, the plurality of reinforcing members 50 may be provided along the third direction.

[0060] According to an embodiment of the present invention, a bracket 60 may be further included to connect the reinforcing member 50 to the third sub-frame 30 or the fourth sub-frame 40 .

[0061] The bracket 60 may include a receiving groove 61 a for receiving the reinforcing member 50 and a flat surface 61 b ​​that is coupled to the outer members 31 and 41 .

[0062] The bracket 60 may have an accommodating groove 61a formed therein, which is bent in the first direction and has a depth equal to the diameter of the cross section of the reinforcing member 50, so that the bracket 60 can accommodate and couple the reinforcing member 50 from the outside. The bracket 60 may also have flat portions 61b at both ends as surfaces that come into contact with and couple to the outer members 31 and 41.

[0063] The bracket 60 can include various types of brackets 61 and 62 depending on the number of receiving grooves 61 a that receive the reinforcing members 50 .

[0064] For example, the bracket 61 may be formed with a plurality of receiving grooves 61a.

[0065] The receiving grooves 61a may be formed in a number corresponding to the number of reinforcing members 50 arranged in a line in the third direction. Therefore, the plurality of receiving grooves 61a may also be arranged in a line along the third direction.

[0066] Furthermore, in the case where there are a plurality of the receiving grooves 61a, a central portion 61c, which is another flat section, may be formed between the receiving grooves 61a.

[0067] The central portion 61c may be formed between the position where the receiving groove 61a is formed in the first direction and the position of the flat portion 61b in the first direction, or may be formed at the same position as the flat portion 61b in the first direction. When the central portion 61c is at the same position as the flat portion 61b in the first direction, the central portion 61c may also be coupled to the third sub-frame 30 or the fourth sub-frame 40.

[0068] As described above, when a plurality of receiving grooves 61a are formed, a plurality of reinforcing members 50 are contained, and the independent behavior of the reinforcing members 50 can be prevented, thereby maximizing the effect of supporting deformation due to collision load.

[0069] Also, the bracket 60 may extend in the third direction and a plurality of brackets may be provided along the second direction.

[0070] Since the reinforcing member 50 may have a shape extending in the second direction, it may be inefficient to fix it with a single bracket 60. Therefore, it may be possible to fix it with multiple brackets 60. In this case, it is also possible to use a bracket 62 having one receiving groove 61a and a bracket 61 having multiple receiving grooves 61a in combination.

[0071] For example, when the reinforcing member 50 is connected to the outer members 31, 41 by the bracket 60, the inner members 32, 42 and the bracket 60 may be spaced apart.

[0072] The reinforcing member 50 is positioned in the closed cross section formed by the outer members 31, 41 and the inner members 32, 42, and the reinforcing member 50 is coupled to the outer members 31, 41 using the bracket 60, so that in the coupled state, the receiving groove 61a can be closest to the inner members 32, 42 in a linear manner. Alternatively, the protrusion 32a of the inner members 32, 42 can be closest to a point where the receiving groove 61a is formed, so that the bracket 60 and the inner member 32 do not come into contact with each other. Therefore, even if the outer members 31, 41 are deformed by an external impact, the inner members 32, 42 can be prevented from being immediately deformed.

[0073] The reinforcing member 50 is formed to extend in the second direction. The reinforcing member 50 may have an end portion that is not positioned in the hollow portion S of the third sub-frame 30 or the fourth sub-frame 40.

[0074] As an example, a curved portion may be formed to match the shape of the first subframe 10 or the second subframe 20, and at least a portion of the reinforcing member 50 may contact the first subframe 10 or the second subframe 20, and the contacting ends of the reinforcing member 50 and the first subframe 10 or the second subframe 20 may be connected by the bracket 60.

[0075] For example, if the end of the reinforcing member 50 located in the hollow portion S of the fourth sub-frame 40 extends to the first sub-frame 10, the reinforcing member 50 can be coupled to the outer member 11 of the first sub-frame 10.

[0076] This is also true for the reinforcing member 50 located in the hollow portion S of the third sub-frame 30, and even if it extends to the second sub-frame 20, it can be connected to the outer member of the second sub-frame 20.

[0077] Since the end of the reinforcing member 50 is connected to the first subframe 10 or the second subframe 20 arranged in the first direction, the impact applied to the third subframe 30 or the fourth subframe 40 can be transmitted to the first subframe 10 or the second subframe 20, thereby providing the effect of effectively transmitting the impact.

[0078] In addition, since the end of the reinforcing member 50 is connected to the bracket 60, it is difficult for the reinforcing member 50 to be separated by an impact in the first direction, and the supporting force can be increased.

[0079] The reinforcing member 50 may be made up of a plurality of members having various lengths and thicknesses depending on the shape of the subframes to be joined.

[0080] For example, it may include a first reinforcing member 51 and a second reinforcing member 52 that are different in length and shape.

[0081] The first reinforcing member 51 may be formed with both ends bent so as to come into contact with the first sub-frame 10 and the second sub-frame 20. The middle portion may be formed to extend in the second direction according to the shape of the third sub-frame 30 or the fourth sub-frame 40.

[0082] The second reinforcing member 52 is shorter in length than the first reinforcing member 51, and one end of the second reinforcing member 52 may contact the first sub-frame 10 or the second sub-frame 20, and the other end of the second reinforcing member 52 may contact the third sub-frame 30 or the fourth sub-frame 40. Therefore, a bent portion is formed only once, and the other end of the second reinforcing member 52 may be located at one point on the third sub-frame 30 or the fourth sub-frame 40.

[0083] As described above, since the reinforcing members 50 are formed using different types, they do not overlap with the structure of the subframe and can be easily changed according to design values. However, the reinforcing members 50 may be the same reinforcing member in multiple pieces, or may be set to different types according to design.

[0084] On the other hand, without being limited to the above example, the reinforcing member 50 may be joined to the inner member in addition to the outer member of the first subframe 10 to the fourth subframe 40, or may be joined to both the outer member and the inner member.

[0085] In addition to mechanical bonding using the bracket 60, the reinforcing member 50 may be bonded to the outer member by welding, or may be bonded using both bonding using the bracket 60 and welding, and is not limited to the bonding methods described above.

[0086] Hereinafter, the above content will be quoted for the battery frame 100 included in the electric vehicle frame.

[0087] FIG. 7 is a diagram showing an electric vehicle frame according to one embodiment of the present invention.

[0088] The electric vehicle frame according to one embodiment of the present invention includes a battery frame 100 , a front frame 200 , a rear frame 300 , a floor 400 and a cross member 500 .

[0089] The battery frame 100 is formed to include the first to fourth sub-frames 10 to 40, and may include a reinforcing member 50 in a hollow portion S formed inside the third sub-frame 30 or the fourth sub-frame 40. The reinforcing member 50 may be positioned along the periphery of the battery area. For other details, the above content may be cited.

[0090] The front frame and the rear frame may be coupled to the battery frame 100 in a first direction, which is the length direction of the vehicle.

[0091] The front frame 200 may be located in a first direction based on the battery frame 100. The front frame 200 may be a frame that forms the front part of the vehicle. The rear frame 300 may be located in a first direction based on the battery frame 100 and may be located in the opposite direction to the front frame 200. The rear frame 300 may be a frame that forms the rear part of the vehicle.

[0092] In an existing vehicle frame 10 (see FIG. 1), a longitudinal member 1 (see FIG. 1) exists by connecting one or multiple members in the second direction, but in an electric vehicle, a battery area exists, and a battery frame 100 can be positioned to maximize this. Also, by connecting a front frame 200 and a rear frame 300 to the battery frame 100 along the length in the second direction formed by the longitudinal member 1 (see FIG. 1), it is possible to replace the existing frame F (see FIG. 1) formed including the longitudinal member 1 (see FIG. 1) and the lateral member 2 (see FIG. 1).

[0093] In this case, some structures including the battery frame 100 can be maintained as one or a few structures, while the front frame 200 and the rear frame 300 can be made different depending on the vehicle model, thereby forming different vehicle lengths.

[0094] The floor 400 covers at least one side of the battery area and is coupled to the battery frame 100. The floor 400 can serve as the floor of the interior space of the vehicle in the completed vehicle body structure.

[0095] The cross member 500 may be fixed to the floor 400, positioned outside the battery area, and extended in the second direction.

[0096] Since a battery pack needs to be located in the battery area, the cross member 500 can play a role in reinforcing the floor 400 in the second direction outside the battery area.

[0097] In addition, the electric vehicle frame according to an embodiment of the present invention may further include a sill side 600, which may be disposed in contact with the battery frame 100 in a second direction, i.e., a width direction of the vehicle, and may be formed to extend in a first direction, i.e., a length direction of the vehicle. The sill side 600 is disposed in contact with the side of the battery frame 100 and fixed in contact with the battery frame 100, thereby providing an effect of increasing structural rigidity.

[0098] As described above, the present invention has been described mainly with reference to the embodiments. However, the present invention is not limited to the above-described embodiments, and it goes without saying that those skilled in the art can modify and implement the present invention without changing the technical concept of the present invention as claimed in the claims. [Explanation of symbols]

[0099] 1:Longitudinal member 2: Transverse member 10: First subframe 20: Second subframe 30: 3rd subframe 40: 4th subframe 50: Reinforcement member 60: Bracket 100: Battery frame 200: Forward frame 300: Rear frame 400:Floor 500: Cross member 600: Silside F: Existing frame

Claims

1. A battery frame, A battery region in which the battery is located is defined; a first subframe formed to surround at least a portion of the battery area and disposed parallel to a first direction that is a longitudinal direction of the vehicle; a second subframe positioned at a distance equal to or greater than the battery area in a second direction, which is a width direction of the vehicle, from the first subframe; a third sub-frame connected to one end of the first sub-frame and one end of the second sub-frame and disposed in the second direction; a fourth subframe connected to the other end of the first subframe and the second subframe; Including, a hollow portion is formed inside the third sub-frame or the fourth sub-frame, a reinforcing member disposed in the hollow portion and in contact with the third sub-frame or the fourth sub-frame; When viewed from the third direction, which is the height direction of the vehicle, The first to fourth sub-frames are connected together to surround the battery area.

2. The third subframe or the fourth subframe is an inner member having an inner surface that contacts the battery area; an outer member coupled to the inner member at both ends in the third direction, the cross section of which parallel to the first direction defines the hollow portion when coupled to the inner member; Including, The reinforcing member is The battery frame according to claim 1 , which contacts the outer member.

3. The battery frame according to claim 2 , wherein the reinforcing member is a hollow pipe.

4. further comprising a bracket for fixing the reinforcing member; The bracket is The battery frame according to claim 2 , further comprising: an accommodation groove that accommodates the reinforcing member; and a flat plane portion that is coupled to the outer member.

5. The bracket is formed with a plurality of the receiving grooves, The bracket is a plurality of the electrodes extending in the third direction and provided along the second direction; The battery frame according to claim 4 , wherein a plurality of the reinforcing members are provided along the third direction.

6. At least a portion of the reinforcing member contacts the first sub-frame or the second sub-frame; The battery frame according to claim 4 , wherein the contacting first sub-frame or second sub-frame and the end of the reinforcing member are joined by the bracket.

7. The reinforcing member is a first reinforcing member having both ends bent so as to contact the first subframe and the second subframe; a second reinforcing member having a length shorter than that of the first reinforcing member, one end of which contacts the first sub-frame or the second sub-frame and the other end of which is coupled to the third sub-frame or the fourth sub-frame; The battery frame of claim 6 , comprising:

8. the inner member and the outer member are in surface contact at one end and in line contact at the other end; The battery frame according to claim 4 , wherein the inner member and the bracket are spaced apart from each other.

9. An electric vehicle frame, A battery region in which the battery is located is defined; The battery frame according to claim 1 , which is formed to surround the battery area; and a front frame and a rear frame coupled to the battery frame in a first direction, which is a length direction of the vehicle; a floor covering at least one side of the battery area and coupled to the battery frame; a cross member coupled to the floor and positioned outside the battery area; Including, electric vehicle frame.

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