CN115042866A - Chassis and electric automobile - Google Patents

Abstract

The invention discloses a chassis and an electric automobile, and the chassis provided by the invention comprises a front bracket, a rear bracket and a battery frame, wherein the front bracket is positioned at the front end of the battery frame and is detachably connected with the battery frame; the rear bracket is positioned at the rear end of the battery rack and is detachably connected with the battery rack; the support surface of the battery carrier supporting the front carrier and/or the support surface of the battery carrier supporting the rear carrier are arranged obliquely with respect to the longitudinal axis of the chassis. When the chassis is adopted, the front bracket and/or the rear bracket can be transmitted to the battery rack through the supporting surface of the battery rack when longitudinal collision occurs. Because the supporting surface in the embodiment of the invention is obliquely arranged relative to the longitudinal axis of the chassis, the collision force of the front bracket and/or the rear bracket is decomposed after being transmitted to the supporting surface, so that the effect of absorbing the collision force is achieved, and the collision performance of the chassis is improved.

Description

Chassis and electric automobile

Technical Field

The invention relates to the technical field of vehicles, in particular to a chassis and an electric automobile.

Background

At present, the electric vehicle inevitably faces the risk of being collided during the running process, so how to improve the collision performance of the chassis becomes a technical problem to be solved urgently by the technical personnel in the field.

Disclosure of Invention

In view of the above, a first aspect of the present invention provides a chassis to improve crash performance of the chassis; a second aspect of the invention provides an electric vehicle.

In order to achieve the purpose, the invention provides the following technical scheme:

the invention provides a chassis which comprises a front bracket, a rear bracket and a battery frame, wherein the front bracket is positioned at the front end of the battery frame and is detachably connected with the battery frame; the rear bracket is positioned at the rear end of the battery rack and is detachably connected with the battery rack; the support surface of the battery carrier supporting the front carrier and/or the support surface of the battery carrier supporting the rear carrier are arranged obliquely with respect to the longitudinal axis of the chassis.

In some embodiments of the present invention, the battery rack has two supporting surfaces for supporting the front bracket, namely a first supporting surface and a second supporting surface, wherein the first supporting surface and the second supporting surface are symmetrically arranged on two sides of the longitudinal axis of the chassis.

In some embodiments of the present invention, the distance between the first supporting surface and the second supporting surface gradually increases from the front end of the chassis to a direction near the rear end of the chassis.

In some embodiments of the present invention, there are two supporting surfaces for supporting the rear bracket by the battery rack, which are a third supporting surface and a fourth supporting surface, wherein the third supporting surface and the fourth supporting surface are symmetrically disposed on two sides of the longitudinal axis of the chassis.

In some embodiments of the present invention, the distance between the third supporting surface and the fourth supporting surface is gradually increased from the rear end of the chassis to a direction close to the front end of the chassis.

In some embodiments of the present invention, when the battery rack is a frame set, the middle part of the frame set is an area for holding batteries, and multiple rows of batteries are arranged in the middle part of the frame set along the transverse direction of the chassis.

In some embodiments of the invention, when the battery rack is at least two frame groups, the at least two frame groups are arranged along the chassis in the transverse direction, the two adjacent frame groups are fixedly connected, the middle part of each frame group is an area for containing batteries, and each frame group contains a row of batteries.

In some embodiments of the invention, the top of the first side of the battery rack and the top of the second side of the battery rack are respectively provided with three first connection points; the middle part of the battery frame is provided with at least two second connecting points.

In some embodiments of the present invention, the front bracket includes a first cross frame, a first center portion, a second center portion, a first side rail frame, a second side rail frame, a first fastener, a second fastener, and a first shear plate, wherein the first cross frame extends in a transverse direction of the chassis and connects the first center portion and the second center portion; the first longitudinal beam frame is connected with the first central part and the first fastener; the first fastener is detachably arranged on one supporting surface of the battery rack; the second longitudinal beam frame is connected with the second central part and a second fastener, and the second fastener is detachably arranged on one supporting surface of the battery rack; the first center part and the second center part are provided with a first fastening point for mounting a front fork arm and a second fastening point for mounting a front stabilizer bar; the first shear plate is fixed to at least one of the first beam frame, the first center portion, the second center portion, the first beam frame, the second beam frame, the first fastener, and the second fastener.

In some embodiments of the present invention, the cross-section of the first beam frame, the cross-section of the first stringer frame, and the cross-section of the second stringer frame are closed structures.

In some embodiments of the present invention, the first beam frame has a single cavity structure or at least two cavity structures along a length direction of the first beam frame.

In some embodiments of the invention, the first beam frame is machined from steel, aluminum, or a composite material.

In some embodiments of the present invention, the first stringer frame is a single cavity structure or at least two cavity structures along a length direction of the first stringer frame.

In some embodiments of the present invention, the angle between the axis of the first side rail frame and the longitudinal axis of the chassis ranges from 5 ° to 10 °.

In some embodiments of the invention, the axis of the first stringer frame is at an angle in the range of 7 ° to the longitudinal axis of the chassis.

In some embodiments of the invention, the second stringer frame is of the same construction as the first stringer frame and is symmetrical about the longitudinal axis of the chassis.

In some embodiments of the invention, the first longitudinal beam frame and the second longitudinal beam frame are provided with a third fastening point for mounting the control arm, a fourth fastening point for mounting the steering mechanism and a fifth fastening point for mounting the front motor.

In some embodiments of the invention, the first central portion, the second central portion, the first fastening member and the second fastening member are formed by extrusion, casting or 3D printing techniques.

In some embodiments of the present invention, the front portions of the first and second center portions are provided with mounting surfaces to which front bumpers are mounted.

In some embodiments of the invention, the top of the first and second central portions is provided with a third connection point for mounting a front rail of the vehicle body.

In some embodiments of the invention, the top portions of the first and second fasteners are provided with fourth connection points for mounting a front side member of a vehicle body.

In some embodiments of the present invention, the first fastening member and the second fastening member include a fastening seat and at least three first screws disposed on the fastening seat, the first screws are fixed on the corresponding supporting surfaces of the battery rack, and when there are three first screws on the fastening seat, the three first screws are arranged in a triangle.

In some embodiments of the present invention, the rear bracket comprises a second cross frame, a first upper longitudinal beam, a first lower longitudinal beam, a second upper longitudinal beam, a second lower longitudinal beam, a third fastener, a fourth fastener, and a second shear plate, wherein the first upper longitudinal beam and the first lower longitudinal beam connect a first end of the second cross frame with the third fastener; the third fastener is detachably arranged on one supporting surface of the battery rack; the second upper longitudinal beam and the second lower longitudinal beam are connected with the second end of the second cross beam frame and the fourth fastener; the fourth fastener is detachably arranged on one supporting surface of the battery rack; the first upper longitudinal beam and the second upper longitudinal beam are provided with a first mounting frame for mounting a rear fork arm and a second mounting frame for mounting a rear stabilizer bar; the second shear plate is fixed on at least one of the second cross beam frame, the first upper longitudinal beam, the first lower longitudinal beam, the second upper longitudinal beam, the second lower longitudinal beam, the third fastener and the fourth fastener.

In some embodiments of the invention, the cross-section of the second beam frame is a closed structure.

In some embodiments of the present invention, the second beam frame has a single cavity structure or at least two cavity structures along a length direction of the second beam frame.

In some embodiments of the invention, the second beam frame is machined from steel, aluminum, or a composite material.

In some embodiments of the present invention, the top of the two ends of the second cross frame is provided with a fifth connecting point for mounting the vehicle body.

In some embodiments of the invention, a sixth fastening point for installing the rear motor is arranged on the side surface of the second cross beam frame close to the battery rack.

In some embodiments of the invention, the first upper longitudinal beam and the first lower longitudinal beam are provided with a first vertical profile bar connecting the first upper longitudinal beam and the first lower longitudinal beam in the region close to the third fastener.

In some embodiments of the invention, the second upper longitudinal beam and the second lower longitudinal beam are provided with a second vertical profile bar connecting the second upper longitudinal beam and the second lower longitudinal beam in a region near the fourth fastener.

In some embodiments of the invention, the first upper longitudinal beam and the second upper longitudinal beam are provided with a sixth connecting point for mounting the vehicle body.

In some embodiments of the invention, the third and fourth fasteners are at least three second screws, and when three second screws, the three second screws are arranged in a triangle.

The invention provides an electric automobile which comprises a chassis as described in any one of the above.

According to the technical scheme, when the chassis is adopted, the front bracket and/or the rear bracket can be transmitted to the battery rack through the supporting surface of the battery rack when longitudinal collision occurs. Since the supporting surface in the embodiment of the present invention is disposed obliquely with respect to the longitudinal axis of the chassis, the collision force from the front bracket and/or the rear bracket is resolved (vertically resolved or laterally resolved) after being transmitted to the supporting surface, so as to achieve the effect of absorbing the collision force, thereby improving the collision performance of the chassis.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic perspective view of a vehicle chassis according to some embodiments of the present invention;

FIG. 2 is a schematic illustration of an exploded view of a chassis in some embodiments of a vehicle of the type provided by the present invention;

FIG. 3 is a schematic perspective view of a chassis of another vehicle type according to some embodiments of the present invention;

FIG. 4 is a schematic illustration of an exploded view of a chassis in some embodiments of another vehicle type provided by the present invention;

FIG. 5 is a schematic perspective view of a battery rack in some embodiments of a vehicle according to the present invention;

FIG. 6 is a schematic perspective view of a battery rack in some embodiments of another vehicle type according to the present invention;

FIG. 7 is a perspective view of a front bracket of a vehicle according to some embodiments of the present invention;

fig. 8 is an exploded view of a front carrier in a vehicle according to some embodiments of the present invention;

FIG. 9 is a perspective view of a rear bracket of a vehicle in some embodiments of the present invention;

FIG. 10 is an exploded view of a rear bracket of a vehicle according to some embodiments of the present invention;

FIG. 11 is a schematic perspective view of an electric vehicle of the present invention;

fig. 12 is a schematic diagram of an explosion structure of an electric vehicle in another vehicle type provided by the invention in some embodiments.

Wherein 100 is a chassis, 200 is a vehicle body;

101 is a front bracket, 102 is a rear bracket, 103 is a battery rack, 104 is a front bumper, 201 is a front cabin, 202 is a rear row cabin, 203 is a front longitudinal beam, 204 is a rear longitudinal beam, 301 is a front fork arm, 302 is a front stabilizer bar, 303 is a control arm, 304 is a steering mechanism, 305 is a front motor, 306 is a rear fork arm, 307 is a rear stabilizer bar, and 308 is a rear motor;

1011 is a first beam frame, 1012 is a first center section, 1013 is a second center section, 1014 is a first beam frame, 1015 is a second beam frame, 1016 is a first fastener, 1017 is a second fastener, 1018 is a first shear plate; 1012-1 is a first fastening point, 1012-2 is a second fastening point, 1012-3 is a mounting surface, 1012-4 is a third connecting point, 1013-1 is a first fastening point, 1013-2 is a second fastening point, 1013-3 is a mounting surface, 1013-4 is a third connecting point; 1014-1 is a third fastening point, 1014-2 is a fourth fastening point, 1014-3 is a fifth fastening point, 1014-4 is a fourth connection point; 1015-1 is a third fastening point, 1015-2 is a fourth fastening point, 1015-3 is a fifth fastening point, and 1015-4 is a fourth connecting point; 1016-1 is a first screw rod, 1017-1 is a first screw rod;

1021 is a second cross frame, 1022 is a first upper longitudinal beam, 1023 is a first lower longitudinal beam, 1024 is a second upper longitudinal beam, 1025 is a second lower longitudinal beam, 1026 is a third fastener, 1027 is a fourth fastener, 1028 is a first vertical profile bar, 1029 is a second vertical profile bar, and 10210 is a second shear plate; 1021-1 is a fifth connection point, 1021-2 is a sixth fastening point, 1022-1 is a first mounting frame, 1022-2 is a second mounting frame, 1022-3 is a sixth connection point, 1024-1 is the first mounting frame, 1024-2 is the second mounting frame, and 1024-3 is the sixth connection point;

103a, 103b, 103c, 103d, 1031, 1032, respectively, are first, second, third, and fourth support surfaces, respectively.

Detailed Description

The first technical core of the invention is to provide a chassis to improve the collision performance of the chassis based on the above factors; the first technical core of the invention is to provide an electric automobile.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-12, a chassis 100 according to some embodiments of the present invention may include a front bracket 101, a rear bracket 102, and a battery rack 103, wherein the front bracket 101 is located at a front end of the battery rack 103 and is detachably connected to the battery rack 103; the rear bracket 102 is positioned at the rear end of the battery frame 103 and is detachably connected with the battery frame 103; the support surface of the battery carrier 103 supporting the front carriage 101 and/or the support surface of the battery carrier 103 supporting the rear carriage 102 are arranged obliquely with respect to the longitudinal axis of the chassis 100.

With the chassis 100 of the embodiment of the present invention, when a longitudinal collision occurs, the front bracket 101 and/or the rear bracket 102 are transferred to the battery holder 103 through the supporting surface of the battery holder 103. Since the support surface in the embodiment of the present invention is disposed obliquely with respect to the longitudinal axis of the chassis 100, the collision force from the front bracket 101 and/or the rear bracket 102 is resolved (vertically resolved or laterally resolved) after being transmitted to the support surface, thereby improving the collision performance of the chassis 100.

In addition, the front bracket 101 and the rear bracket 102 are detachably mounted on the battery rack 103, so in the embodiment of the invention, for at least two vehicle types, one or two of the front bracket 101, the rear bracket 102 and the battery rack 103 can be selected as a general part, while the rest are selected as special parts, and the width and length of the whole chassis 100 can be changed by selecting different special parts so as to be suitable for different vehicle types. For example: the front bracket 101 and the rear bracket 102 can be used as general parts, the battery bracket 103 can be selected as special parts, and the length and the width of the whole chassis 100 can be changed by selecting the battery brackets 103 with different lengths or widths; or the battery rack 103 is used as a general-purpose part and the front tray 101 and the rear tray 102 are selected as special-purpose parts, and the length and width of the entire chassis 100 are changed by selecting the front tray 101 and the rear tray 102 of different sizes or widths.

It should be noted that, because the supporting surface is disposed obliquely with respect to the longitudinal axis of the chassis 100, the force applied to the supporting surface can be resolved into a vertical direction and a longitudinal direction, and a lateral direction and a longitudinal direction, regardless of which two directions the forces are resolved, thereby achieving the purpose of reducing the longitudinal collision force. The invention is preferably arranged in a mode of being divided into a transverse mode and a longitudinal mode.

At least two support surfaces for supporting the front bracket 101, one mounting point for the front bracket 101 may correspond to one support surface, two supports, three support surfaces, and the like, and a structure in which the front bracket 101 can be mounted through one mounting point may be understood as a support surface in the present invention.

For convenience of manufacture, in some embodiments of the present invention, the battery holder 103 supports the front tray 101 at two supporting surfaces, namely a first supporting surface 103a and a second supporting surface 103b, wherein the first supporting surface 103a and the second supporting surface 103b are symmetrically arranged about the longitudinal axis of the chassis 100.

As described above, the support surface can be decomposed into the vertical direction and the longitudinal direction, and also into the lateral direction and the longitudinal direction upon decomposition of the force. In some embodiments of the present invention, the distance between the first supporting surface 103a and the second supporting surface 103b gradually increases or the distance between the first supporting surface 103a and the second supporting surface 103b gradually decreases from the front end of the chassis 100 to the direction approaching the rear end of the chassis 100. Preferably, the distance between the first support surface 103a and the second support surface 103b becomes gradually larger.

Similarly, for convenience of processing, the battery holder 103 has two supporting surfaces for supporting the rear bracket 102, namely a third supporting surface 103c and a fourth supporting surface 103d, wherein the third supporting surface 103c and the fourth supporting surface 103d are symmetrically arranged about the longitudinal axis of the chassis 100.

As described above, the supporting surface can be decomposed into the vertical direction and the longitudinal direction, and also into the lateral direction and the longitudinal direction upon the decomposition force. In some embodiments of the present invention, the distance between the third supporting surface 103c and the fourth supporting surface 103d gradually increases or the distance between the first supporting surface 103a and the second supporting surface 103b gradually decreases from the rear end of the chassis 100 to the direction closer to the front end of the chassis 100. Preferably, the distance between the first support surface 103a and the second support surface 103b becomes gradually larger.

The battery frame 103 is a core component of the chassis 100, and not only can bear most of the impact, but also the middle part of the battery frame 103 is used for mounting a battery assembly, which can be a power battery assembly or a fuel battery assembly, and the battery frame 103 can be understood as a structure in which the battery assembly can be mounted inside. Since the battery rack 103 needs to enclose a space for installing the battery assembly, the battery rack 103 has a frame structure, and the middle part of the frame is used for installing the battery assembly. When the battery frame 103 is a frame group, the middle of the frame group is an area for holding batteries or the battery frame 103 is at least two frame groups, and the at least two frame groups are arranged along the transverse direction of the chassis 100 or the at least two frame groups are arranged along the longitudinal direction of the chassis 100. When two at least frame groups are transversely arranged along the chassis 100, two adjacent frame groups are fixedly connected, the middle part of each frame group is an area for containing batteries, and each frame group contains a row of batteries.

For a pure electric vehicle, the battery rack 103 includes a frame set, and a plurality of rows of battery assemblies are installed in the middle of the frame set. For fuel-powered vehicles, the battery rack 103 includes two frame sets, one for mounting power battery components and the other for mounting fuel battery components. The two frames may be connected directly or by other means, for example by a base to which the fuel tank is secured.

As described above, since the front tray 101 and the rear tray 102 are detachably mounted on the battery holder 103 in the chassis 100 of the present invention, at least one can be selected as a common member. The present invention preferably selects the front bracket 101 and the rear bracket 102 as common parts, and the battery holder 103 as special parts. Further, in order to reduce the duplication of connection points. In some embodiments of the present invention, three first connection points 1031 are respectively disposed on the top of the first side of the battery holder 103 and the top of the second side of the battery holder 103; the middle of the battery frame 103 is provided with at least two second connection points 1032. Three first connection points 1031 located at a first side of the battery holder 103, two first connection points 1031 located at two ends of the battery holder 103, and one first connection point located in the middle of the battery holder 103; three first connection points 1031 at the second side of the battery holder 103, two at both ends of the battery holder 103, and one in the middle of the battery holder 103. The cabin of the vehicle body 200 is mounted on the battery rack 103 via six first connection points 1031 and at least two second connection points 1032.

The front bracket 101 is provided to increase a longitudinal collision force in front of the chassis 100, and the front bracket 101 is mainly used to mount the front fork 301, the front stabilizer bar 302, and the like. In some embodiments of the present invention, the front bracket 101 includes a first cross member frame 1011, a first center portion 1012, a second center portion 1013, a first longitudinal member frame 1014, a second longitudinal member frame 1015, a first fastener 1016, a second fastener 1017, and a first shear plate 1018, wherein the first cross member frame 1011 extends in a lateral direction of the chassis 100 and connects the first center portion 1012 and the second center portion 1013; a first rail frame 1014 connecting the first central portion 1012 and the first fastener 1016; the first fastener 1016 is detachably mounted on a support surface of the battery frame 103; the second longitudinal beam frame 1015 connects the second central portion 1013 and a second fastening member 1017, and the second fastening member 1017 is detachably mounted on a supporting surface of the battery rack 103; first and second central portions 1012, 1013 are provided with first fastening points 1012-1 for mounting front fork 301 and second fastening points 1012-2 for mounting front stabilizer bar 302; the first shear plate 1018 is fixed to at least one of the first cross member frame 1011, the first center portion 1012, the second center portion 1013, the first longitudinal member frame 1014, the second longitudinal member frame 1015, the first fastener 1016, and the second fastener 1017.

It can be seen that when there is a front longitudinal collision, the collision force is firstly transmitted to the first cross beam frame 1011, a part of the force of the first cross beam frame 1011 is transmitted to the first fastening member 1016 through the first longitudinal beam frame 1014, another part of the force is transmitted to the second fastening member 1017 through the second longitudinal beam frame 1015, and is transmitted to the battery frame 103 by the matching of the first fastening member 1016 and the supporting surface, and is transmitted to the battery frame 103 by the matching of the second fastening member 1017 and the supporting surface, because the matching of the first fastening member 1016 and the supporting surface is obliquely arranged with the longitudinal axis of the chassis 100, and the matching of the second fastening member 1017 and the supporting surface is obliquely arranged with the longitudinal axis of the chassis 100, the force acting on the supporting surface can be decomposed, so that the force acting on the longitudinal direction of the battery frame 103 is reduced, and the collision performance of the chassis 100 is improved.

In addition, since the first side member frame 1014 of the front bracket 101 is directly fixed to the first support surface 103a by the first fastening member 1016 and the second side member frame 1015 of the front bracket 101 is directly fixed to the second support surface 103b by the second fastening member 1017 in the above embodiment of the present disclosure, in other words, another cross member is provided at one end of the first side member frame 1014 and the second side member frame 1015 close to the battery frame 103, the weight of the chassis 100 is reduced.

In order to increase the strength of the first cross member frame 1011, the first longitudinal member frame 1014, and the second longitudinal member frame 1015 while reducing the weight of the first cross member frame 1011, the first longitudinal member frame 1014, and the second longitudinal member frame 1015, the cross section of the first cross member frame 1011, the cross section of the first longitudinal member frame 1014, and the cross section of the second longitudinal member frame 1015 are closed structures in some embodiments of the present invention.

As the first cross beam frame 1011 of the closed structure, along the length direction of the first cross beam frame 1011, the first cross beam frame 1011 is a single cavity structure or at least two cavity structures, or along the width direction of the first cross beam frame 1011, the first cross beam frame 1011 is a single cavity structure or at least two cavity structures. Preferably, along the length direction of the first beam frame 1011, the first beam frame 1011 has at least two cavity structures. That is, the middle of the first cross frame 1011 is partitioned by providing a rib or a partition to improve the strength of the first cross frame 1011.

In some embodiments of the present invention, the first beam frame 1011 is machined from steel, aluminum, or a composite material; or the first beam frame 1011 is processed by a hybrid technique.

The first longitudinal beam frame 1014 as a closed structure has a single cavity structure or at least two cavity structures along the longitudinal direction of the first longitudinal beam frame 1014, or the first longitudinal beam frame 1014 has a single cavity structure or at least two cavity structures along the width direction of the first longitudinal beam frame 1014. Preferably, the first stringer frame 1014 is at least two cavity structures along the length of the first stringer frame 1014. That is, the strength of the first side member frame 1014 is increased by providing a rib or a spacer to separate the middle portion of the first side member frame 1014.

The second longitudinal beam frame 1015 serving as a closed structure has a single-cavity structure or at least two-cavity structures along the length direction of the second longitudinal beam frame 1015, or has a single-cavity structure or at least two-cavity structures along the width direction of the second longitudinal beam frame 1015. Preferably, the second longitudinal beam frame 1015 has at least two cavity structures along the length direction of the second longitudinal beam frame 1015. That is, the middle portion of the second longitudinal beam frame 1015 is partitioned by providing a rib or a partition to enhance the strength of the second longitudinal beam frame 1015.

The axis of the first longitudinal beam frame 1014 is parallel to the longitudinal axis of the chassis 100, or the axis of the first longitudinal beam frame 1014 has a predetermined angle with the longitudinal axis of the chassis 100. In order to improve the small offset crash performance, in some embodiments of the present invention, the axis of the first side rail frame 1014 is angled from 5 to 10 with respect to the longitudinal axis of the chassis 100. Preferably, the first stringer frame 1014 has an axis that is at an angle in the range of 7 ° to the longitudinal axis of the chassis 100.

The axis of the second longitudinal beam frame 1015 is parallel to the longitudinal axis of the chassis 100, or the axis of the second longitudinal beam frame 1015 forms a predetermined angle with the longitudinal axis of the chassis 100. In order to improve the small offset crash performance, in some embodiments of the present invention, the angle between the axis of the second side member frame 1015 and the longitudinal axis of the chassis 100 is in the range of 5 ° to 10 °. Preferably, the angle between the axis of the second stringer frame 1015 and the longitudinal axis of the chassis 100 is in the range of 7 °.

In some embodiments of the present invention, the second stringer frame 1015 is identical in construction to the first stringer frame 1014 and is symmetrical about the longitudinal axis of the chassis 100.

Further, in some embodiments of the present invention, the first longitudinal beam frame 1014 and the second longitudinal beam frame 1015 are provided with third fastening points 1014-1, 1015-1 to mount the control arm 303, fourth fastening points 1014-2, 1015-2 to mount the steering mechanism 304, and fifth fastening points 1014-3, 1015-3 to mount the front motor 305.

The first central portion 1012, the second central portion 1013, the first fastening member 1016, and the second fastening member 1017 are formed by extrusion, casting, or 3D printing. Any design that can achieve the above structure is within the scope of the present invention.

To improve crash performance of the chassis 100, in some embodiments of the invention, the front portions of the first and second center sections 1012, 1013 are provided with mounting surfaces 1012-3, 1013-3 to which the front bumper 104 is mounted. The front bumper 104 can be mounted via the mounting surfaces 1012-3, 1013-3, and in particular the front bumper 104 is non-removably mounted to the mounting surfaces 1012-3, 1013-3 of the first and second central portions 1012, 1013, or the front bumper 104 is removably mounted to the mounting surfaces 1012-3, 1013-3 of the first and second central portions 1012, 1013. In a detachable manner, when the front bumper 104 is deformed by a collision and needs to be replaced, it can be replaced with a new front bumper.

When there is a connection point of the vehicle body 200 to the front bracket 101, the connection point of the vehicle body 200 to the front bracket 101 may be provided on at least one of the first cross member frame 1011, the first center portion 1012, the second center portion 1013, the first side member frame 1014, and the second side member frame 1015.

In order to ensure uniform stress, the strength of the connecting point is moderate. The top of the first and second center portions 1012, 1013 are provided with third connecting points 1013-4, 1012-4 to which the front side members 203 of the vehicle body 200 are attached. Wherein the two third connecting points 1013-4, 1012-4 form the points connecting the front ends of the body 200.

Further, in some embodiments of the present invention, the top portions of the first fastener 1016 and the second fastener 1017 are provided with fourth connection points 1014-4, 1015-4 for mounting the front side member 203 of the vehicle body 200.

It can be seen that the front side member 203 of the vehicle body 200 is mounted on the front bracket 101 through the third connection points 1013-4, 1012-4 and the fourth connection points 1014-4, 1015-4, so that there is no connection point between the corresponding floor of the front cabin 201 and the front bracket 101, and even if the front bracket 101 deforms during a longitudinal collision, the floor corresponding to the front cabin 201 and the front bracket 101 do not have a connection point, so that the front cabin 201 does not deform due to the deformation of the front bracket 101, thereby effectively protecting the safety of the people in the front-passenger driving position of the front cabin 201.

The first and second fastening members 1016 and 1017 function to fix the front bracket 101 to the battery frame 103, and the first and second fastening members 1016 and 1017 may be understood as long as the structure that can fix the front bracket 101 to the battery frame 103 is achieved. In some embodiments of the present invention, the first fastening member 1016 and the second fastening member 1017 include at least three first screws 1016-1, 1017-1 fixed on the corresponding supporting surface of the battery frame 103, and when there are three first screws 1016-1, 1017-1, the three first screws 1016-1, 1017-1 are arranged in a triangle. Since the first fastening member 1016 and the second fastening member 1017 are detachably mounted on the corresponding supporting surfaces through the at least three first bolts 1016-1 and 1017-1, respectively, the force transmitted to the first fastening member 1016 through the first side rail frame 1014 is detachably mounted on the first supporting surface 103a through the at least three first bolts 1016-1 and 1017-1, respectively, and since the three first bolts 1016-1 and 1017-1 are arranged in a dispersed manner, the coupling strength between the first fastening member 1016 and the first supporting surface 103a can be improved, and the force applied to the first supporting surface 103a can be further dispersed. The force transmitted to the second fastening member 1017 through the second longitudinal beam frame 1015 is detachably mounted on the first supporting surface 103a through at least three first screws 1016-1, 1017-1, respectively, and since the three first screws 1016-1, 1017-1 are arranged in a dispersed manner, the strength of connection between the second fastening member 1017 and the second supporting surface 103b can be improved, and the force applied to the second supporting surface 103b can be further dispersed.

In some embodiments of the present invention, the first fastening member 1016 and the second fastening member 1017 include a fastening seat and at least three first screws 1016-1, 1017-1 arranged on the fastening seat, the first screw 1016-1 of the first fastening member 1016 is fixed on the corresponding supporting surface of the cell frame 103, the first screw 1017-1 of the first fastening member 1016 is fixed on the corresponding supporting surface of the cell frame 103, and when the first screw 1016-1 of the first fastening member 1016 is three first screws 1016-1, the three first screws 1016-1, 1017-1 are arranged in a triangle; and when the first screw 1017-1 of the first fastening member 1017 is three first screws 1017-1, the three first screws 1017-1 are arranged in a triangle. Since the first fastening member 1016 and the second fastening member 1017 are detachably mounted on the corresponding supporting surfaces through the at least three first bolts 1016-1 and 1017-1, respectively, the force transmitted to the first fastening member 1016 through the first side rail frame 1014 is detachably mounted on the first supporting surface 103a through the at least three first bolts 1016-1 and 1017-1, respectively, and since the three first bolts 1016-1 and 1017-1 are arranged in a dispersed manner, the coupling strength between the first fastening member 1016 and the first supporting surface 103a can be improved, and the force applied to the first supporting surface 103a can be further dispersed. The force transmitted to the second fastening member 1017 through the second longitudinal beam frame 1015 is detachably mounted on the first supporting surface 103a through at least three first screws 1016-1, 1017-1, respectively, and since the three first screws 1016-1, 1017-1 are arranged in a dispersed manner, the strength of connection between the second fastening member 1017 and the second supporting surface 103b can be improved, and the force applied to the second supporting surface 103b can be further dispersed.

The rear bracket 102 is provided to increase a longitudinal collision force behind the chassis 100, and the rear bracket 102 is mainly used to mount the rear fork 306, the rear stabilizer bar 307, and the like. In some embodiments of the present invention, the rear bracket 102 includes a second cross member frame 1021, a first upper longitudinal member 1022, a first lower longitudinal member 1023, a second upper longitudinal member 1024, a second lower longitudinal member 1025, a third fastener 1026, a fourth fastener 1027, and a second shear plate 10210, wherein the first upper longitudinal member 1022 and the first lower longitudinal member 1023 connect a first end of the second cross member frame 1021 with the third fastener 1026; a third fastener 1026 is removably attached to a support surface of the battery stand 103; a second upper longitudinal beam 1024 and a second lower longitudinal beam 1025 connect a second end of the second cross beam frame 1021 with a fourth fastener 1027; the fourth fastening member 1027 is detachably mounted on a supporting surface of the battery holder 103; the first upper longitudinal beam 1022 and the second upper longitudinal beam 1024 are provided with first mounting brackets 1022-1, 1024-1 to which the rear fork arms 306 are mounted and second mounting brackets 1022-2, 1024-2 to which the rear stabilizer bar 307 is mounted; the second shear plate 10210 is fixed to at least one of the second cross member frame 1021, the first upper longitudinal member 1022, the first lower longitudinal member 1023, the second upper longitudinal member 1024, the second lower longitudinal member 1025, the third fastener 1026, and the fourth fastener 1027.

It can be seen that, when there is a rear longitudinal collision, the collision force is transmitted to the second cross member frame 1021 first, a part of the force of the first cross member frame 1011 is transmitted to the third fastening member 1026 through the first upper longitudinal beam 1022 and the first lower longitudinal beam 1023, and another part of the force is transmitted to the fourth fastening member 1027 through the second upper longitudinal beam 1024 and the second lower longitudinal beam 1025, and is transmitted to the battery rack 103 by the cooperation of the third fastening member 1026 and the supporting surface, and is transmitted to the battery rack 103 by the cooperation of the fourth fastening member 1027 and the supporting surface, and the cooperation of the fourth fastening member 1027 and the supporting surface is arranged obliquely to the longitudinal axis of the chassis 100, so that the force acting on the supporting surface can be resolved, thereby reducing the force acting on the longitudinal direction of the battery rack 103, and improving the collision performance of the chassis 100.

In order to improve the strength of the second cross frame 1021 and reduce the weight of the second cross frame 1021, the cross section of the second cross frame 1021 is a closed structure in some embodiments of the invention.

The second cross frame 1021 serving as the closed structure is configured such that, along a length direction of the second cross frame 1021, the second cross frame 1021 is a single cavity structure or at least two cavity structures, or along a width direction of the second cross frame 1021, the second cross frame 1021 is a single cavity structure or at least two cavity structures. Preferably, the second cross frame 1021 is at least two cavity structures along the length direction of the second cross frame 1021. That is, the middle of the second cross frame 1021 is partitioned by providing a rib or a partition to improve the strength of the second cross frame 1021.

In some embodiments of the present invention, the second cross member frame 1021 is machined from steel, aluminum, or a composite material; or the second cross frame 1021 is formed by a hybrid technology.

When there is a connection point of the vehicle body 200 to the rear bracket 102, the connection point of the vehicle body 200 to the rear bracket 102 may be provided on at least one of the second cross frame 1021, the first upper longitudinal beam 1022, the second upper longitudinal beam 1024, the third fastener 1026, and the fourth fastener 1027.

In order to ensure uniform stress, the strength of the connecting point is moderate. The top of the two ends of the second cross member frame 1021 is provided with a fifth connecting point 1021-1 for mounting the vehicle body 200. Wherein the two fifth connecting points 1021-1 form a point connecting the rear ends of the vehicle body 200.

The rear motor 308 is mounted on the rear bracket 102 or otherwise fixed to the battery carrier 103. When the rear motor 308 is fixed to the rear bracket 102, the rear motor 308 may be mounted on at least one of the second cross frame 1021, the first upper longitudinal beam 1022, the first lower longitudinal beam 1023, the second upper longitudinal beam 1024, the second lower longitudinal beam 1025, the third fastener 1026 and the fourth fastener 1027, preferably, the rear motor 308 is disposed on the second cross frame 1021, and particularly, a sixth fastening point 1021-2 for mounting the rear motor 308 is disposed on a side surface of the second cross frame 1021 near the battery rack 103.

In some embodiments of the present invention, the second cross frame rail and the third fastener 1026 are connected by a first upper longitudinal beam 1022 and a first lower longitudinal beam 1023, and the second cross frame rail and the fourth fastener 1027 are connected by a second upper longitudinal beam 1024 and a second lower longitudinal beam 1025. Then, the first upper side member 1022 and the first lower side member 1023 are arranged in the lateral direction or in the vertical direction; the second upper side member 1024 and the second lower side member 1025 are arranged in the lateral direction or in the vertical direction. Preferably, the first upper longitudinal beam 1022 and the first lower longitudinal beam 1023 are arranged in the vertical direction; the second upper longitudinal beam 1024 and the second lower longitudinal beam 1025 are arranged in the vertical direction.

In order to increase the strength between the first upper longitudinal beam 1022 and the first lower longitudinal beam 1023, a first vertical profile bar 1028 may also be provided, which first end of the first vertical profile bar 1028 is connected to the first upper longitudinal beam 1022 and the second end of the first vertical profile bar 1028 is connected to the first lower longitudinal beam 1023. Preferably, the first vertical profile bar 1028 is disposed in the area of the first upper and lower longitudinal beams 1022, 1023 adjacent the third fastener 1026.

In order to increase the strength between the second upper longitudinal beam 1024 and the second lower longitudinal beam 1025, a second vertical profile bar 1029 may be further provided, the second end of the second vertical profile bar 1029 being connected to the second upper longitudinal beam 1024 and the second end of the second vertical profile bar 1029 being connected to the second lower longitudinal beam 1025. Preferably, the second vertical profile bar 1029 is disposed in the region of the second upper longitudinal beam 1024 and the second lower longitudinal beam 1025 adjacent to the third fastener 1026.

In some embodiments of the present invention, the first upper rail 1022 and the second upper rail 1024 are provided with sixth connection points 1022-3, 1024-3 to which the vehicle body 200 is mounted. It can be seen that the rear side member 204 of the vehicle body 200 is mounted on the rear bracket 102 through the third connection points 1013-4, 1012-4 and the fourth connection points 1014-4, 1015-4, so that there is no connection point between the floor corresponding to the rear luggage compartment and the rear bracket 102, and therefore, even if the rear bracket 102 is deformed during a longitudinal collision, the rear luggage compartment is not deformed due to the deformation of the rear bracket 102 because there is no connection point between the floor corresponding to the rear luggage compartment and the rear bracket 102, thereby effectively protecting the safety of the passenger in the front-passenger driving position of the rear luggage compartment.

It can be seen that the rear side member 204 of the vehicle body 200 is mounted on the rear bracket 102 through the third connection points 1013-4, 1012-4 and the fourth connection points 1014-4, 1015-4, so that there is no connection point between the floor corresponding to the rear luggage compartment and the rear bracket 102, and even if the rear bracket 102 deforms during a longitudinal collision, the floor corresponding to the rear passenger compartment 202 does not deform due to the deformation of the rear bracket 102, so that the safety of the personnel at the position of the rear passenger compartment 202 is effectively protected, and the opening of the doors of the rear passenger compartment 202 is not affected.

The third and fourth fastening means 1026 and 1027 function to fasten the rear bracket 102 to the battery frame 103, and the third and fourth fastening means 1026 and 1027 may be understood as long as the structure that can fasten the rear bracket 102 to the battery frame 103 is realized. In some embodiments of the present invention, the third fastening element 1026 and the fourth fastening element 1027 include at least three second screws, and in the case of three second screws, the three second screws are arranged in a triangle. Since the third fastening member 1026 and the fourth fastening member 1027 are detachably attached to the corresponding support surfaces by at least three second screws, respectively, the force transmitted to the third fastening member 1026 via the first upper longitudinal member 1022 and the first lower longitudinal member 1023 is detachably attached to the third support surface 103c by at least three second screws, respectively, and since the three second screws are arranged in a dispersed manner, the strength of attachment of the third fastening member 1026 to the third support surface 103c can be improved, and the force applied to the third support surface 103c can be further dispersed. The force transmitted to the fourth fastening element 1027 via the second upper longitudinal beam 1024 and the second lower longitudinal beam 1025 is detachably mounted on the third supporting surface 103c by at least three second screws, and the three second screws are distributed, so that the connecting strength between the fourth fastening element 1027 and the fourth supporting surface 103d can be improved, and the force applied to the fourth supporting surface 103d can be further distributed.

In some embodiments of the present invention, the third fastening element 1026 and the fourth fastening element 1027 include a fastening seat and at least three second screws disposed on the fastening seat, and when there are three second screws on the fastening seat, the three second screws are arranged in a triangle. Since the third fastening member 1026 and the fourth fastening member 1027 are detachably attached to the corresponding support surfaces by at least three second screws, respectively, the force transmitted to the third fastening member 1026 via the first upper longitudinal member 1022 and the first lower longitudinal member 1023 is detachably attached to the third support surface 103c by at least three second screws, respectively, and since the three second screws are arranged in a dispersed manner, the strength of attachment of the third fastening member 1026 to the third support surface 103c can be improved, and the force applied to the third support surface 103c can be further dispersed. The force transmitted to the fourth fastening element 1027 via the second upper longitudinal beam 1024 and the second lower longitudinal beam 1025 is detachably mounted on the third supporting surface 103c by at least three second screws, and the three second screws are distributed, so that the connecting strength between the fourth fastening element 1027 and the fourth supporting surface 103d can be improved, and the force applied to the fourth supporting surface 103d can be further distributed.

An electric vehicle of the present invention includes the chassis 100 of any one of the above. Since the above-mentioned chassis 100 has the above-mentioned beneficial effects, the electric vehicle including the chassis 100 has corresponding effects, and the detailed description thereof is omitted.

It should be noted that, for the convenience of description, only the portions relevant to the present invention of the related application are shown in the drawings. The embodiments and features of the embodiments in the present application may be combined with each other without conflict.

It should be understood that "system", "apparatus", "unit" and/or "module" as used herein is a method for distinguishing different components, elements, parts or assemblies at different levels. However, other words may be substituted by other expressions if they accomplish the same purpose.

As used in this application and the appended claims, the terms "a," "an," "the," and/or "the" are not intended to be inclusive in the singular, but rather are intended to be inclusive in the plural unless the context clearly dictates otherwise. In general, the terms "comprises" and "comprising" merely indicate that steps and elements are included which are explicitly identified, that the steps and elements do not form an exclusive list, and that a method or apparatus may include other steps or elements. An element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.

In the description of the embodiments herein, "/" means "or" unless otherwise specified, for example, a/B may mean a or B; "and/or" herein is merely an association relationship describing an associated object, and means that there may be three relationships, for example, a and/or B, and may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of the present application, "a plurality" means two or more than two.

In the following, the terms "first", "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

Flow charts are used herein to illustrate operations performed by systems according to embodiments of the present application. It should be understood that the preceding or following operations are not necessarily performed in the exact order in which they are performed. Rather, the various steps may be processed in reverse order or simultaneously. Meanwhile, other operations may be added to the processes, or a certain step or several steps of operations may be removed from the processes.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (15)

1. A chassis, characterized by comprising a front bracket (101), a rear bracket (102) and a battery rack (103), wherein the front bracket (101) is positioned at the front end of the battery rack (103) and is detachably connected with the battery rack (103); the rear bracket (102) is positioned at the rear end of the battery rack (103) and is detachably connected with the battery rack (103); the support surface of the battery carrier (103) supporting the front carrier (101) and/or the support surface of the battery carrier (103) supporting the rear carrier (102) is arranged obliquely with respect to the longitudinal axis of the chassis.

2. The chassis according to claim 1, wherein the battery holder (103) supports the front bracket (101) in two planes, a first support plane (103a) and a second support plane (103b), wherein the first support plane (103a) and the second support plane (103b) are symmetrically arranged on both sides of the longitudinal axis of the chassis.

3. The chassis of claim 2, wherein the distance between the first support surface (103a) and the second support surface (103b) becomes progressively larger from the front end of the chassis towards the rear end of the chassis.

4. The chassis according to claim 1, wherein the battery holder (103) supports the rear bracket (102) in two planes, a third support plane (103c) and a fourth support plane (103d), wherein the third support plane (103c) and the fourth support plane (103d) are symmetrically arranged with respect to the longitudinal axis of the chassis.

5. The chassis of claim 4, wherein the distance between the third support surface (103c) and the fourth support surface (103d) becomes progressively larger from the rear end of the chassis towards the front end of the chassis.

6. The chassis of claim 1, wherein when the battery frame (103) is a frame set, the middle portion of the frame set is an area for holding batteries, and a plurality of rows of batteries are arranged in the middle portion of the frame set along the transverse direction of the chassis.

7. The chassis according to claim 1, wherein when the battery rack (103) is at least two frame groups, at least two frame groups are arranged along the transverse direction of the chassis, two adjacent frame groups are fixedly connected, the middle part of each frame group is an area for containing batteries, and each frame group contains a row of batteries.

8. The chassis according to claim 1, wherein the top of the first side of the battery holder (103) and the top of the second side of the battery holder (103) are provided with three first connection points, respectively; the middle part of the battery frame (103) is provided with at least two second connecting points.

9. The chassis of claim 1, wherein the front bracket (101) comprises a first beam frame (1011), a first center section (1012), a second center section (1013), a first beam frame (1014), a second beam frame (1015), a first fastener (1016), a second fastener (1017), and a first shear plate (1018), wherein the first beam frame (1011) extends in a transverse direction of the chassis and connects the first center section (1012) and the second center section (1013); the first stringer frame (1014) connecting the first center section (1012) and the first fastener (1016); the first fastener (1016) is detachably mounted on a supporting surface of the battery frame (103); the second longitudinal beam frame (1015) is connected with the second central part (1013) and the second fastener (1017), and the second fastener (1017) is detachably mounted on one supporting surface of the battery rack (103); the first central part (1012) and the second central part (1013) are provided with a first fastening point for mounting a front fork arm (301) and a second fastening point for mounting a front stabilizer bar (302); the first shear plate (1018) is fixed to at least one of the first beam frame (1011), the first center section (1012), the second center section (1013), the first beam frame (1014), the second beam frame (1015), the first fastener (1016), and the second fastener (1017).

10. The chassis of claim 9, wherein the axis of said first stringer frame (1014) is angled relative to the longitudinal axis of said chassis in the range of 5 ° to 10 °.

11. The chassis according to claim 9, wherein the first fastening member (1016) and the second fastening member (1017) comprise a fastening seat and at least three first screws disposed on the fastening seat, the first screws are fixed on the corresponding support surfaces of the battery rack (103), and when there are three first screws on the fastening seat, the three first screws are arranged in a triangle.

12. The chassis of claim 1, wherein the rear bracket (102) comprises a second cross frame (1021), a first upper longitudinal beam (1022), a first lower longitudinal beam (1023), a second upper longitudinal beam (1024), a second lower longitudinal beam (1025), a third fastener (1026), a fourth fastener (1027), and a second shear plate (10210), wherein the first upper longitudinal beam (1022) and the first lower longitudinal beam (1023) connect a first end of the second cross frame (1021) with the third fastener (1026); the third fastener (1026) is detachably mounted on a supporting surface of the battery frame (103); the second upper longitudinal beam (1024) and the second lower longitudinal beam (1025) connect a second end of the second beam frame (1021) with the fourth fastener (1027); the fourth fastener (1027) is detachably arranged on a supporting surface of the battery frame (103); the first upper longitudinal beam (1022) and the second upper longitudinal beam (1024) are provided with a first mounting frame for mounting a rear fork arm (306) and a second mounting frame for mounting a rear stabilizer bar (307); the second shear panel (10210) is fixed to at least one of the second cross frame (1021), the first upper longitudinal beam (1022), the first lower longitudinal beam (1023), the second upper longitudinal beam (1024), the second lower longitudinal beam (1025), the third fastener (1026), and the fourth fastener (1027).

13. The chassis of claim 12, wherein the first upper longitudinal beam (1022) and the first lower longitudinal beam (1023) in the region thereof near the third fastener (1026) are provided with a first vertical profile bar (1028) connecting the first upper longitudinal beam (1022) and the first lower longitudinal beam (1023);

the second upper longitudinal beam (1024) and the second lower longitudinal beam (1025) are provided with second vertical profile bars (1029) connecting the second upper longitudinal beam (1024) and the second lower longitudinal beam (1025) in the areas close to the fourth fasteners (1027).

14. The chassis of claim 12, wherein the third fastener (1026) and the fourth fastener (1027) are at least three second screws, and when three second screws, the three second screws are in a triangular arrangement.

15. An electric vehicle, characterized in that it comprises a chassis according to any one of claims 1 to 14.

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