CN115027557B - Front bracket, chassis and electric automobile - Google Patents

Front bracket, chassis and electric automobile Download PDF

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Publication number
CN115027557B
CN115027557B CN202111316017.4A CN202111316017A CN115027557B CN 115027557 B CN115027557 B CN 115027557B CN 202111316017 A CN202111316017 A CN 202111316017A CN 115027557 B CN115027557 B CN 115027557B
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CN
China
Prior art keywords
frame
front bracket
fastener
mounting
center portion
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Application number
CN202111316017.4A
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Chinese (zh)
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CN115027557A (en
Inventor
菲利皮克·瓦德马尔
米图拉·马利克
沃舒克·马利克
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Great Wall Motor Co Ltd
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Great Wall Motor Co Ltd
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Priority to CN202111316017.4A priority Critical patent/CN115027557B/en
Publication of CN115027557A publication Critical patent/CN115027557A/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
    • B62D21/15—Understructures, i.e. chassis frame on which a vehicle body may be mounted having impact absorbing means, e.g. a frame designed to permanently or temporarily change shape or dimension upon impact with another body
    • B62D21/152—Front or rear frames
    • B62D21/155—Sub-frames or underguards
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
    • B60K2001/0405—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion characterised by their position
    • B60K2001/0438—Arrangement under the floor

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Body Structure For Vehicles (AREA)

Abstract

The invention discloses a front bracket, a chassis and an electric automobile. Because the planes determined by the first mounting points of the first fastener are inclined to the longitudinal axis of the front bracket and the planes determined by the second mounting points of the second fastener are inclined to the longitudinal axis of the front bracket, the collision force of the front bracket is decomposed after being transmitted to the first mounting points and the second mounting points, so that the effect of absorbing the collision force is achieved, and the collision performance of the chassis is improved.

Description

Front bracket, chassis and electric automobile
Technical Field
The invention relates to the technical field of vehicles, in particular to a front bracket, a chassis and an electric automobile.
Background
At present, an electric automobile inevitably faces a risk of being collided in a driving process, so how to improve the collision performance of a chassis becomes a technical problem to be solved urgently by those skilled in the art.
Disclosure of Invention
In view of the above, a first aspect of the present invention provides a front bracket to improve collision performance of a chassis; a second aspect of the invention provides a chassis; a third aspect of the present invention provides an electric vehicle.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the invention provides a front bracket, which comprises a cross beam frame, a first central part, a second central part, a first longitudinal beam frame, a second longitudinal beam frame, a first fastener and a second fastener, wherein the cross beam frame extends along the transverse direction of the front bracket and is connected with the first central part and the second central part; the first longitudinal beam frame is connected with the first central part and the first fastening piece; the first fastener has a plurality of first mounting points, a plane defined by the plurality of first mounting points being inclined to a longitudinal axis of the front bracket; the second longitudinal beam frame connects the second center portion and a second fastener having a plurality of second mounting points, a plane defined by the plurality of second mounting points being inclined to a longitudinal axis of the front bracket; the first center part and the second center part are provided with a first fastening point for installing the front fork arm and a second fastening point for installing the front stabilizer bar.
In some embodiments of the present invention, the cross-section of the cross-beam frame, the cross-section of the first side-beam frame, and the cross-section of the second side-beam frame are closed structures.
In some embodiments of the present invention, the beam frame is a single cavity structure or at least two cavity structures along the length of the beam frame.
In some embodiments of the invention, the 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 the length 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 front bracket ranges from 5 ° to 10 °.
In some embodiments of the present invention, the angle between the axis of the first side rail frame and the longitudinal axis of the front bracket is in the range of 7 °.
In some embodiments of the present invention, the second side rail frame is identical in structure to the first side rail frame and is symmetrically disposed on both sides of the longitudinal axis of the front bracket.
In some embodiments of the present invention, the first and second side rail frames are provided with a third fastening point at which the control arm is mounted, a fourth fastening point at which the steering mechanism is mounted, and a fifth fastening point at which the front motor is mounted.
In some embodiments of the invention, the first central portion, the second central portion, the first fastener, and the second fastener are extrusion, cast molding, or 3D printing techniques molding.
In some embodiments of the invention, the front portions of the first and second center portions are provided with mounting surfaces to mount the front bumper.
In some embodiments of the invention, the top of the first and second center portions are provided with a first connection point to which a front side member of the vehicle body is mounted.
In some embodiments of the invention, the top of the first and second fasteners are provided with a second connection point for mounting a front rail of the vehicle body.
In some embodiments of the invention, the first fastener and the second fastener comprise a fastening seat and at least three screws disposed on the fastening seat, one screw of the first fastener forming a first mounting point and one screw of the second fastener forming a second mounting point; and when the number of the screws arranged on the fastening seat is three, the three screws are distributed in a triangle shape.
In some embodiments of the present invention, the shear plate is fixed to at least one of the cross member frame, the first center portion, the second center portion, the first side member frame, the second side member frame, the first fastener, and the second fastener.
The invention also discloses a chassis which comprises a battery rack and a front bracket which is detachably arranged at the front end of the battery rack and is any one of the above.
The invention also discloses an electric automobile, which comprises the chassis.
As can be seen from the above technical solution, when the front bracket of the present invention is adopted, the front bracket is mounted at the front end of the battery rack, and when a longitudinal collision occurs, the front bracket is transferred to the battery rack through a plurality of first mounting points and a plurality of second mounting points of the battery rack. Because the planes determined by the first mounting points of the first fastener are inclined with the longitudinal axis of the front bracket and the planes determined by the second mounting points of the second fastener are inclined with the longitudinal axis of the front bracket, the impact force of the front bracket can be decomposed (decomposed vertically or transversely) after being transmitted to the supporting surface, the impact force absorbing effect is achieved, and the impact performance of the chassis is improved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic perspective view of a front bracket in some embodiments of a vehicle model according to the present invention;
FIG. 2 is a schematic view of an exploded structure of a front bracket in some embodiments of a vehicle model according to the present invention;
fig. 3 is a schematic perspective view of a chassis in some embodiments of a vehicle model according to the present invention;
FIG. 4 is a schematic view of an exploded view of a chassis in some embodiments of a vehicle model according to the present invention;
FIG. 5 is a schematic perspective view of a chassis in some embodiments of another vehicle model according to the present invention;
FIG. 6 is a schematic view of an exploded view of a chassis in some embodiments of another vehicle model according to the present invention;
fig. 7 is a schematic perspective view of a battery rack in some embodiments of a vehicle model according to the present invention;
fig. 8 is a schematic diagram of an explosion structure of a battery rack in some embodiments of a vehicle type according to the present invention;
fig. 9 is a schematic perspective view of an electric vehicle in some embodiments of the present invention;
fig. 10 is a schematic diagram of an explosion structure of an electric vehicle in some embodiments in another vehicle type according to the present invention.
Wherein 100 is a chassis, 200 is a vehicle body;
101 is a front bracket, 102 is a battery rack, 103 is a front bumper, 201 is a front cabin, 202 is a front 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;
1011 is a cross beam frame, 1012 is a first center portion, 1013 is a second center portion, 1014 is a first stringer frame, 1015 is a second stringer frame, 1016 is a first fastener, 1017 is a second fastener, 1018 is a 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 first 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 first connecting point; 1014-1 is the third fastening point, 1014-2 is the fourth fastening point, 1014-3 is the fifth fastening point, 1014-4 is the second connection point; 1015-1 is the third fastening point, 1015-2 is the fourth fastening point, 1015-3 is the fifth fastening point, 1015-4 is the second connection point; 1016-1 is a screw, 1017-1 is a screw;
102a is a first support surface, 102b is a second support surface, 1021 is a third connection point, and 1022 is a fourth connection point.
Detailed Description
Based on the above factors, a first technical core of the present invention is to provide a front bracket to improve the collision performance of a chassis. The second technical core of the invention is to provide a chassis; the third technical core of the invention is to provide an electric automobile.
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-10, the front bracket 101 according to some embodiments of the present invention is configured to enhance a longitudinal collision force in front of the chassis 100, and the front bracket 101 is mainly used for mounting the front fork 301 and the front stabilizer bar 302. In some embodiments of the present invention, the front bracket 101 includes a cross member frame 1011, a first center portion 1012, a second center portion 1013, a first side member frame 1014, a second side member frame 1015, a first fastener 1016, and a second fastener 1017, wherein the 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; the first side rail frame 1014 connects the first center portion 1012 and the first fastener 1016; the first fastener 1016 has a plurality of first mounting points defining a plane inclined to the longitudinal axis of the front bracket; the second side member frame 1015 connects the second center 1013 and the second fastener 1017, the second fastener 1017 having a plurality of second mounting points, a plane defined by the plurality of second mounting points being inclined to a longitudinal axis of the front bracket; the first center portion 1012 and the second center portion 1013 are provided with a first fastening point 1012-1 for mounting the front fork arm 301 and a second fastening point 1012-2 for mounting the front stabilizer bar 302.
When the front bracket of the present invention is used, the front bracket 101 is mounted to the front end of the battery frame 102, and the front bracket 101 is transmitted to the battery frame 102 through the plurality of first mounting points and the plurality of second mounting points in the event of a longitudinal collision. Because the planes defined by the first mounting points of the first fastener are inclined to the longitudinal axis of the front bracket and the planes defined by the second mounting points of the second fastener are inclined to the longitudinal axis of the front bracket, the impact force of the front bracket is decomposed (decomposed vertically or transversely) after being transmitted to the supporting surface, so that the impact force absorbing effect is achieved, and the impact performance of the chassis is improved.
The longitudinal axis of the front bracket 101 is the longitudinal axis of the battery holder 102. Since the planes defined by the plurality of first mounting points are arranged obliquely with respect to the longitudinal axis of the front bracket 101, forces acting on the first mounting points and the second mounting points can be decomposed into the vertical direction and the longitudinal direction, and the lateral direction and the longitudinal direction when decomposed, regardless of which two directions are decomposed, the purpose of reducing the longitudinal collision force can be achieved. The invention is preferably arranged in a manner of being decomposed into a transverse direction and a longitudinal direction.
In some embodiments of the present invention, the distance between the plane defined by the plurality of first mounting points and the plane defined by the plurality of second mounting points becomes larger gradually or the distance between the plane defined by the plurality of first mounting points and the plane defined by the plurality of second mounting points becomes smaller gradually from the cross member frame 1011 toward the extending direction of the first side member frame 1014 and the second side member frame 1015. Preferably, the distance between the plane defined by the plurality of first mounting points and the plane defined by the plurality of second mounting points becomes gradually larger.
It can be seen that when there is a front longitudinal collision, the collision force is firstly transferred to the cross beam frame 1011, a part of the force of the cross beam frame 1011 is transferred to the first fastening member 1016 through the first longitudinal beam frame 1014, another part of the force is transferred to the second fastening member 1017 through the second longitudinal beam frame 1015, and is transferred to the battery frame 102 through the cooperation of the first fastening member 1016 and the supporting surface, and is transferred to the battery frame 102 through the cooperation of the second fastening member 1017 and the supporting surface, and because the cooperation of the first fastening member 1016 and the supporting surface is obliquely arranged with the longitudinal axis of the chassis 100, the cooperation of the second fastening member 1017 and the supporting surface is obliquely arranged with the longitudinal axis of the chassis 100, so that the force acting on the supporting surface can be decomposed, thereby reducing the force acting on the longitudinal direction of the battery frame 102, and improving the collision performance of the chassis 100.
In addition, since the first side frame 1014 of the front bracket 101 is directly fixed to the first support surface 102a by the first fastener 1016 and the second side frame 1015 of the front bracket 101 is directly fixed to the second support surface 102b by the second fastener 1017 in the above embodiment of the present invention, in other words, the first side frame 1014 and the second side frame 1015 are not provided with another cross member near one end of the battery frame 102, and thus the weight of the chassis 100 is reduced.
In order to reduce the weight of the cross member frames 1011, the first side member frames 1014, and the second side member frames 1015 while increasing the strength of the cross member frames 1011, the first side member frames 1014, and the second side member frames 1015 described above, the cross section of the cross member frames 1011, the cross section of the first side member frames 1014, and the cross section of the second side member frames 1015 are closed structures in some embodiments of the present invention.
The beam frame 1011 as the closed structure is a single-cavity structure or at least two-cavity structure along the length direction of the beam frame 1011, or the beam frame 1011 is a single-cavity structure or at least two-cavity structure along the width direction of the beam frame 1011. Preferably, the beam frame 1011 has at least two cavity structures along the length direction of the beam frame 1011. That is, the middle of the beam frame 1011 is partitioned by providing a reinforcing rib or a partition plate to improve the strength of the beam frame 1011.
In some embodiments of the invention, the beam frame 1011 is machined from steel, aluminum, or a composite material; or the beam frame 1011 is fabricated using a hybrid technique.
The first side frame 1014 that is a closed structure is a single-cavity structure or at least two-cavity structure along the longitudinal direction of the first side frame 1014, or the first side frame 1014 is a single-cavity structure or at least two-cavity structure along the width direction of the first side frame 1014. Preferably, the first side frame 1014 has at least two cavity structures along the length of the first side frame 1014. That is, the middle portion of the first side member frame 1014 is partitioned by providing a reinforcing rib or a partition plate to increase the strength of the first side member frame 1014.
The second side frame 1015 as the closed structure is a single-cavity structure or at least two-cavity structure along the length direction of the second side frame 1015, or is a single-cavity structure or at least two-cavity structure along the width direction of the second side frame 1015, and the second side frame 1015 is a single-cavity structure or at least two-cavity structure. Preferably, the second side frame 1015 has at least two cavity structures along the length direction of the second side frame 1015. That is, the middle portion of the second side frame 1015 is partitioned by providing a reinforcing rib or a bulkhead to improve the strength of the second side frame 1015.
The axis of the first side rail frame 1014 is parallel to the longitudinal axis of the chassis 100 or the axis of the first side rail frame 1014 is at a predetermined angle to the longitudinal axis of the chassis 100. To improve low offset crash performance, in some embodiments of the present invention, the angle between the axis of the first side rail frame 1014 and the longitudinal axis of the chassis 100 may range from 5 to 10. Preferably, the angle between the axis of the first side rail frame 1014 and the longitudinal axis of the chassis 100 is in the range of 7 °.
The axis of the second side rail frame 1015 is parallel to the longitudinal axis of the chassis 100, or the axis of the second side rail frame 1015 is at a predetermined angle to the longitudinal axis of the chassis 100. To improve the small offset crash performance, in some embodiments of the present invention, the angle between the axis of the second side rail frame 1015 and the longitudinal axis of the chassis 100 ranges from 5 ° to 10 °. Preferably, the second side rail frame 1015 has an angle between its axis and the longitudinal axis of the chassis 100 of 7 °.
In some embodiments of the present invention, the second side rail frame 1015 is identical in structure to the first side rail frame 1014 and is symmetrically disposed on either side of the longitudinal axis of the chassis 100.
Further, in some embodiments of the present invention, the first and second side frame frames 1014, 1015 are provided with third fastening points 1014-1, 1015-1 for mounting the control arm 303, fourth fastening points 1014-2, 1015-2 for mounting the steering mechanism 304, and fifth fastening points 1014-3, 1015-3 for mounting 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. The design of the structure is within the scope of the invention as long as it can be realized.
To improve the collision performance of the chassis 100, in some embodiments of the present invention, the front portions of the first center portion 1012 and the second center portion 1013 are provided with mounting surfaces 1012-3, 1013-3 to which the front bumper 103 is mounted. The front bumper 103 may be mounted through the mounting surfaces 1012-3, 1013-3, specifically the mounting surfaces 1012-3, 1013-3 of the first and second center portions 1012, 1013 to which the front bumper 103 is non-detachably mounted, or the front bumper 103 may be detachably mounted to the mounting surfaces 1012-3, 1013-3 of the first and second center portions 1012, 1013. In a detachable manner, when the front bumper 103 needs to be replaced through collision deformation, the front bumper can be replaced by a new front bumper.
When there is a connection point of the vehicle body 200 with the front bracket 101, the connection point of the vehicle body 200 with the front bracket 101 may be provided on at least one of the 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, and the strength of the connecting point is moderate. The top of the first center portion 1012 and the second center portion 1013 are provided with first connection points 1013-4, 1012-4 to which the front side member 202 of the vehicle body 200 is mounted. Wherein the two first connection points 1013-4, 1012-4 form points where the front end of the vehicle body 200 is connected.
Further, in some embodiments of the present invention, the top of the first fastener 1016 and the second fastener 1017 are provided with a second connection point 1014-4, 1015-4 to which the front side member 202 of the vehicle body 200 is mounted.
It can be seen that the front side member 202 of the vehicle body 200 is mounted on the front bracket 101 through the first connection points 1013-41012-4 and the second connection points 1014-4, 1015-4, and thus, the corresponding floor of the front cabin 201 has no connection point with the front bracket 101, and even if the front bracket 101 is deformed when a longitudinal collision occurs, the front cabin 201 is not deformed due to the deformation of the front bracket 101 because the corresponding floor of the front cabin 201 has no connection point with the front bracket 101, thereby effectively protecting the safety of the person in the front cabin 201 at the front passenger position.
The function of the first fastener 1016 and the second fastener 1017 to secure the front bracket 101 to the battery frame 102 is understood to be the first fastener 1016 and the second fastener 1017, as long as the structure to secure the front bracket 101 to the battery frame 102 is enabled.
Wherein, in some embodiments of the present invention, the first fastener 1016 and the second fastener 1017 comprise a fastening seat and at least three screws disposed on the fastening seat, one screw of the first fastener 1016 forming a first mounting point and one screw of the second fastener 1017 forming a second mounting point; and when three screws are arranged on the fastener, the three screws are arranged in a triangle. Because the first fastener 1016 and the second fastener 1017 are detachably mounted on the corresponding support surfaces by at least three screws, respectively, the forces transmitted to the first fastener 1016 via the first side frame 1014 are detachably mounted on the first support surface 102a by at least three screws, respectively, and because the three screws are arranged in a dispersed manner, the connection strength of the first fastener 1016 and the first support surface 102a can be improved, and the forces applied to the first support surface 102a can be further dispersed. The forces transmitted to the second fastener 1017 via the second side frame 1015 are detachably mounted on the first support surface 102a by at least three screws, respectively, and since the three screws are distributed, the connection strength of the second fastener 1017 and the second support surface 102d can be improved, and the forces applied to the second support surface 102b can be further dispersed.
In some embodiments of the present invention, the first fastener 1016 and the second fastener 1017 are at least three screws 1016-1, 1017-1 fixed on corresponding supporting surfaces of the battery frame 102, and in the case of three screws 1016-1, 1017-1, the three screws 1016-1, 1017-1 are arranged in a triangle. Because the first fastener 1016 and the second fastener 1017 are detachably mounted on the corresponding support surfaces by at least three screws 1016-1, 1017-1, respectively, the force transmitted to the first fastener 1016 via the first stringer frame 1014 is detachably mounted on the first support surface 102a by at least three screws 1016-1, 1017-1, respectively, and because the three screws 1016-1, 1017-1 are distributed, the connection strength of the first fastener 1016 and the first support surface 102a can be improved, and the force applied to the first support surface 102a can be further dispersed. The forces transmitted to the second fastener 1017 via the second side frame 1015 are detachably mounted on the first supporting surface 102a by at least three screw rods 1016-1, 1017-1, respectively, and since the three screw rods 1016-1, 1017-1 are distributed, the connection strength of the second fastener 1017 to the second supporting surface 102b can be improved while the forces applied to the second supporting surface 102b can be further dispersed.
To increase the strength of the front bracket 101 and improve its collision performance, the front bracket 101 further includes a shear plate 1018, wherein the shear plate 1018 is fixed to at least one of the cross member frame 1011, the first central portion 1012, the second central portion 1013, the first side member frame 1014, the second side member frame 1015, the first fastener 1016, and the second fastener 1017. The provision of the shear plate 1018 can improve the overall connection strength of the front bracket 101, thereby improving the collision performance thereof.
As shown in fig. 3 to 8, a chassis 100 is disclosed in some embodiments of the present invention, and may include a front bracket 101 and a battery rack 102, wherein the front bracket 101 is positioned at a front end of the battery rack 102 and is detachably connected to the battery rack 102; the support surface of the battery rack 102 supporting the front bracket 101 is arranged obliquely with respect to the longitudinal axis of the chassis 100.
With the chassis 100 of the embodiment of the present invention, the front bracket 101 is transferred to the battery rack 102 through the supporting surface of the battery rack 102 when a longitudinal collision occurs. 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 by the front bracket 101 is decomposed (vertically decomposed or laterally decomposed) after being transmitted to the support surface, thereby improving the collision performance of the chassis 100.
In addition, the front bracket 101 is detachably mounted on the battery rack 102, so in the embodiment of the present invention, one or two of the front bracket 101 and the battery rack 102 may be selected as a general member and the rest as a special member for at least two vehicle types, and the width and length of the entire chassis 100 may be changed by selecting different special members to be suitable for different vehicle types. For example: the front bracket 101 can be used as a general component, the battery rack 102 is selected as a special component, and the length and the width of the whole chassis 100 are changed by selecting the battery racks 102 with different lengths or widths; or the battery rack 102 is used as a general-purpose piece, the front bracket 101 is selected as a special-purpose piece, and the overall length and width of the chassis 100 are changed by selecting front brackets 101 of different sizes or widths.
It should be noted that, since the supporting surface is disposed obliquely with respect to the longitudinal axis of the chassis 100, the force acting on the supporting surface can be decomposed into the vertical direction and the longitudinal direction, and the transverse direction and the longitudinal direction, regardless of the two directions in which the decomposition is performed, so that the purpose of reducing the longitudinal collision force can be achieved. The invention is preferably arranged in a manner of being decomposed into a transverse direction and a longitudinal direction.
At least two support surfaces for supporting the front bracket 101 may correspond to one support surface for one mounting point of the front bracket 101, may correspond to two supports, may correspond to three support surfaces, and so on, so long as the structure capable of mounting the front bracket 101 through one mounting point can be understood as the support surface in the present invention.
For convenience of processing, in some embodiments of the present invention, the battery rack 102 has two support surfaces for supporting the front bracket 101, namely, a first support surface 102a and a second support surface 102b, where the first support surface 102a and the second support surface 102b are symmetrically disposed about the longitudinal axis of the chassis 100.
As described above, the support surface can be decomposed into a vertical direction and a longitudinal direction, and also into a lateral direction and a longitudinal direction at the time of the decomposing force. In some embodiments of the present invention, the distance between the first support surface 102a and the second support surface 102b becomes gradually larger or the distance between the first support surface 102a and the second support surface 102b becomes gradually smaller from the front end of the chassis 100 toward the rear end of the chassis 100. Preferably, the distance between the first support surface 102a and the second support surface 102b becomes gradually larger.
The battery frame 102 is a core component of the chassis 100, which can not only withstand most collisions, but also a middle portion of the battery frame 102 is used to mount a battery assembly, which may be a power battery assembly or a fuel battery assembly, so long as a structure in which the battery assembly can be mounted can be understood as the battery frame 102. Since the battery frame 102 needs to enclose a space having a battery pack mounted therein, the battery frame 102 is of a frame structure, and a middle portion of the frame is used for mounting the battery pack. When the battery rack 102 is formed by a frame, the middle of the battery rack 102 is a region for accommodating batteries or the battery rack 102 is formed by at least two frames, at least two frames are arranged along the transverse direction of the chassis 100 or at least two frames are arranged along the longitudinal direction of the chassis 100. When at least two frames are arranged transversely along the chassis 100, two adjacent frames are fixedly connected, the middle part of each frame is a region for containing batteries, and each frame contains a row of batteries.
For a pure electric vehicle, the battery rack 102 is composed of a frame, and multiple rows of battery assemblies are installed in the middle of the frame. For a fuel electric vehicle, the battery rack 102 is composed of two frames, one of which is used to mount the power cell assembly and the other of which is used to mount the fuel cell assembly. 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 bracket 101 is detachably mounted to the battery holder 102 in the chassis 100 of the present invention, at least one may be selected as a general-purpose member. And the present invention preferably selects the front bracket 101 as a general-purpose component and the battery holder 102 as a special-purpose component. Further, in order to reduce the repeated arrangement of the connection points. In some embodiments of the present invention, the top of the first side of the battery rack 102 and the top of the second side of the battery rack 102 are respectively provided with three third connection points 1021; at least two fourth connection points 1022 are provided at the middle of the battery rack 102. And three first connection points 1021 located at the first side of the battery frame 102, two located at both ends of the battery frame 102, and one located in the middle of the battery frame 102; three first connection points 1021 on the second side of the battery holder 102, two on either end of the battery holder 102 and one in the middle of the battery holder 102. The passenger compartment of the vehicle body 200 is mounted to the battery rack 102 via six third connection points 1021 and at least two fourth connection points 1022.
As shown in fig. 9 and 10, an electric vehicle of the present invention includes a chassis 100 of any one of the above. Because the chassis 100 has the above beneficial effects, the electric vehicle including the chassis 100 has corresponding effects, and will not be described herein.
It should be noted that, for convenience of description, only a portion relevant to the present invention is shown in the drawings. Embodiments and features of embodiments in this application may be combined with each other without conflict.
It should be appreciated that "system," "apparatus," "unit" and/or "module" as used in this application is one method for distinguishing between different components, elements, parts, portions or assemblies at different levels. However, if other words can achieve the same purpose, the word can be replaced by other expressions.
As used in this application and in the claims, the terms "a," "an," "the," and/or "the" are not specific to the singular, but may include the plural, unless the context clearly dictates otherwise. In general, the terms "comprises" and "comprising" merely indicate that the steps and elements are explicitly identified, and they do not constitute an exclusive list, as other steps or elements may be included in a method or apparatus. The inclusion of an element defined by the phrase "comprising one … …" does not exclude the presence of additional identical elements in a process, method, article, or apparatus that comprises an element.
Wherein, in the description of the embodiments of the present application, "/" means or is meant unless otherwise indicated, for example, a/B may represent a or B; "and/or" herein is merely an association relationship describing an association object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In addition, in the description of the embodiments of the present application, "plurality" means two or more than two.
The terms "first" and "second" are used below for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature.
Flowcharts are used in this application to describe the operations performed by systems according to embodiments of the present application. It should be appreciated that the preceding or following operations are not necessarily performed in order precisely. Rather, the steps may be processed in reverse order or simultaneously. Also, other operations may be added to or removed from these 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 (16)

1. A front bracket for mounting at a front end of a battery rack of a vehicle, characterized in that the front bracket comprises a cross frame (1011), a first center portion (1012), a second center portion (1013), a first side frame (1014), a second side frame (1015), a first fastener (1016) and a second fastener (1017), wherein the cross frame (1011) extends in a lateral direction of the front bracket and connects the first center portion (1012) and the second center portion (1013); the first stringer frame (1014) connecting the first center portion (1012) and the first fastener (1016); the first fastener (1016) having a plurality of first mounting points, a plane defined by the plurality of first mounting points being inclined to a longitudinal axis of the front bracket; the second side member frame (1015) connects the second center portion (1013) and the second fastener (1017), the second fastener (1017) having a plurality of second mounting points, a plane defined by the plurality of second mounting points being inclined to a longitudinal axis of the front bracket; the first central part (1012) and the second central part (1013) are provided with a first fastening point for installing the front fork arm (301) and a second fastening point for installing the front stabilizer bar (302); in the event of a longitudinal crash of the vehicle, the front bracket is transferred to the battery rack via a plurality of the first mounting points and a plurality of the second mounting points.
2. The front bracket of claim 1, wherein a cross section of the cross member frame (1011), a cross section of the first side member frame (1014), and a cross section of the second side member frame (1015) are closed structures.
3. The front bracket according to claim 2, characterized in that the cross member frame (1011) is of a single cavity structure or of at least two cavity structures along the length direction of the cross member frame (1011).
4. Front bracket according to claim 2, characterized in that the cross beam frame (1011) is machined from steel, aluminium or a composite material.
5. The front bracket of claim 1, wherein the first side rail frame (1014) is a single cavity structure or at least two cavity structures along the length of the first side rail frame (1014).
6. The front bracket of claim 1, wherein an angle between an axis of the first side rail frame (1014) and a longitudinal axis of the front bracket ranges from 5 ° to 10 °.
7. The front bracket of claim 6, wherein an angle between an axis of the first side rail frame (1014) and a longitudinal axis of the front bracket ranges from 7 °.
8. The front bracket of claim 1, wherein the second side rail frame (1015) is identical in structure to the first side rail frame (1014) and is symmetrically disposed on both sides of the longitudinal axis of the front bracket.
9. The front bracket of claim 1, characterized in that the first side frame (1014) and the second side frame (1015) are provided with a third fastening point for mounting a control arm (303), a fourth fastening point for mounting a steering mechanism (304) and a fifth fastening point for mounting a front motor (305).
10. The front bracket of claim 1, characterized in that the first central portion (1012), the second central portion (1013), the first fastener (1016) and the second fastener (1017) are extrusion, cast or 3D printing techniques.
11. The front bracket according to claim 1, characterized in that front portions of the first center portion (1012) and the second center portion (1013) are provided with mounting surfaces (1013-3) to which the front bumper (103) is mounted.
12. The front bracket according to claim 1, characterized in that the top of the first center part (1012) and the second center part (1013) are provided with a first connection point for mounting a front side member of a vehicle body;
the top of the first fastener (1016) and the second fastener (1017) are provided with a second connection point for mounting a front side member of a vehicle body.
13. The front bracket of claim 1, characterized in that the first fastener (1016) and the second fastener (1017) comprise a fastening seat and at least three screws provided on the fastening seat, one screw of the first fastener (1016) forming one of the first mounting points and one screw of the second fastener (1017) forming one of the second mounting points; and when the number of the screws arranged on the fastening seat is three, the three screws are distributed in a triangle shape.
14. The front bracket of claim 1, further comprising a shear plate (1018), the shear plate (1018) being secured to at least one of the cross beam frame (1011), the first center portion (1012), the second center portion (1013), the first stringer frame (1014), the second stringer frame (1015), the first fastener (1016), and the second fastener (1017).
15. A chassis comprising a battery rack and a front bracket as claimed in any one of claims 1 to 14 detachably provided at a front end of the battery rack.
16. An electric vehicle comprising the chassis of claim 15.
CN202111316017.4A 2021-11-08 2021-11-08 Front bracket, chassis and electric automobile Active CN115027557B (en)

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CN111391922A (en) * 2018-12-30 2020-07-10 长城汽车股份有限公司 Electric automobile frame
KR20210039674A (en) * 2019-10-02 2021-04-12 현대모비스 주식회사 Chassis platform module for electric vehicle

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Publication number Priority date Publication date Assignee Title
CN104443039A (en) * 2014-11-19 2015-03-25 湖南大学 Electric car frame structure for distributed installation of battery packs
CN106553518A (en) * 2015-09-30 2017-04-05 富士重工业株式会社 Collision load buffer structure body
CN106240508A (en) * 2016-07-29 2016-12-21 奇瑞新能源汽车技术有限公司 The automobile body collision energy absorption structure of electric automobile
CN111391922A (en) * 2018-12-30 2020-07-10 长城汽车股份有限公司 Electric automobile frame
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