WO2024221191A1 - 下车身、底盘以及车辆 - Google Patents

下车身、底盘以及车辆 Download PDF

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Publication number
WO2024221191A1
WO2024221191A1 PCT/CN2023/090393 CN2023090393W WO2024221191A1 WO 2024221191 A1 WO2024221191 A1 WO 2024221191A1 CN 2023090393 W CN2023090393 W CN 2023090393W WO 2024221191 A1 WO2024221191 A1 WO 2024221191A1
Authority
WO
WIPO (PCT)
Prior art keywords
hole
vehicle body
longitudinal beam
holes
lower vehicle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2023/090393
Other languages
English (en)
French (fr)
Inventor
郭辉
贺斌
王娇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Contemporary Amperex Technology Co Ltd
Contemporary Amperex Intelligence Technology Shanghai Ltd
Original Assignee
Contemporary Amperex Technology Co Ltd
Contemporary Amperex Intelligence Technology Shanghai Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Contemporary Amperex Technology Co Ltd, Contemporary Amperex Intelligence Technology Shanghai Ltd filed Critical Contemporary Amperex Technology Co Ltd
Priority to PCT/CN2023/090393 priority Critical patent/WO2024221191A1/zh
Priority to CN202380063141.5A priority patent/CN119816444A/zh
Publication of WO2024221191A1 publication Critical patent/WO2024221191A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • B62D21/02—Understructures, i.e. chassis frame on which a vehicle body may be mounted comprising longitudinally or transversely arranged frame members
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D23/00—Combined superstructure and frame, i.e. monocoque constructions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
    • B62D25/08—Front or rear portions

Definitions

  • the present application relates to the field of vehicles, and in particular to an undercarriage, a chassis and a vehicle.
  • the present application provides a lower vehicle body, a chassis and a vehicle to reduce the space waste of the vehicle body and increase the capacity of the battery in the chemical compartment.
  • an embodiment of the present application provides a lower vehicle body, including a chemical chamber and a longitudinal beam, the chemical chamber including a chamber body and a side beam, the chamber body is connected to the side beams on both sides of a first direction, the side beams extend along a second direction, and the first direction and the second direction are arranged to intersect.
  • the chemical chamber is provided with a longitudinal beam on at least one side of the first direction, and the longitudinal beam is arranged in contact with the side beam and connected to each other.
  • the lower vehicle body provided in the embodiment of the present application includes a chemical warehouse and a longitudinal beam.
  • the warehouse body of the chemical warehouse is used to place batteries, and the side beam is used to connect with the warehouse body and the longitudinal beam, which can ensure the functional requirements of the lower vehicle body.
  • the longitudinal beam and the side beam are arranged in a close fit and connected to each other, and there is no need for them to be directly connected, and there is no need for interval arrangement and connection through an adapter, so that the lower vehicle body can reduce space waste under the same size and provide a larger occupied space for the chemical warehouse.
  • a first hole extending along a first direction is provided on the longitudinal beam
  • a second hole arranged opposite to the first hole is provided on the side beam
  • the lower body includes a first connecting member, which is inserted into the first hole and the second hole and connects the longitudinal beam with the side beam.
  • the lower vehicle body provided in the embodiment of the present application is provided with a first hole extending along a first direction on the longitudinal beam, and a second hole corresponding to the first hole is provided on the side beam.
  • the first connecting member can be used to achieve the requirements of fitting and directly connecting the longitudinal beam and the side beam, without adding a transition member such as a threshold beam for transition between the two, thereby ensuring the connection strength between the longitudinal beam and the side beam.
  • the first hole is a through hole
  • the second hole is a blind hole
  • the first connecting member is threadedly connected to at least one of the longitudinal beam and the side beam.
  • the lower vehicle body provided in the embodiment of the present application is facilitated to penetrate the longitudinal beam and the side beam by making the first hole a through hole and the second hole a blind hole.
  • the first connecting member threadedly connected to at least one of the longitudinal beam and the side beam, it is beneficial to fix the relative position between the longitudinal beam and the side beam, thereby improving the connection strength between the two.
  • the threaded connection has a self-locking function, which can reduce the risk of the side beam and the longitudinal beam being separated from each other during the alignment process of the lower vehicle body.
  • the second hole is set in the form of a blind hole, which can prevent external pollutants such as water vapor from entering the warehouse body, thereby ensuring the sealing performance of the warehouse body.
  • the first hole is a strip-shaped hole and the length direction is parallel to the second direction.
  • the lower vehicle body provided in the embodiment of the present application can offset the manufacturing tolerances and on-site assembly tolerances of the longitudinal beam and side beam parts by making the first hole a strip-shaped hole with the length direction parallel to the second direction, thereby ensuring the connection and assembly requirements of the two.
  • an avoidance gap is further provided on the longitudinal beam, and the avoidance gap is arranged around the first hole.
  • the lower vehicle body provided in the embodiment of the present application is provided with an avoidance gap, so that the first connecting member can avoid the disassembly and assembly tools during disassembly and assembly, which is beneficial to the disassembly and assembly of the first connecting member.
  • the number of the first holes and the number of the second holes are both multiple, the first holes and the second holes are arranged one to one, and a first connecting member is disposed in each group of the first holes and the second holes that are arranged opposite to each other.
  • the lower vehicle body provided in the embodiment of the present application has multiple first holes and one-to-one arrangement of the second holes, so that the longitudinal beam and the side beam can be connected at multiple points, thereby improving the connection strength between the two.
  • the longitudinal beam includes a wall portion enclosing an inner cavity, a column located in the inner cavity, and reinforcing ribs connecting the column and the wall portion, and the first hole is disposed in the column.
  • the lower vehicle body provided in the embodiment of the present application adopts the above-mentioned structural form of the longitudinal beam, which can ensure the strength and the setting requirements of the first hole at the same time, and can also achieve the effects of economical use, weight reduction and cost reduction.
  • a third hole is provided on the side of the side beam facing the warehouse body
  • a fourth hole is provided on the longitudinal beam opposite to the third hole
  • the lower body also includes a second connecting member, which is inserted into the third hole and the fourth hole and connects the longitudinal beam and the side beam.
  • the lower vehicle body provided in the embodiment of the present application is provided with a third hole extending along the first direction on the longitudinal beam, and a fourth hole corresponding to the third hole is provided on the side beam.
  • a second connecting member is used to achieve a reinforced connection between the longitudinal beam and the side beam. There is no need to add a threshold beam or other adapter between the two. A reinforced connection between the longitudinal beam and the side beam can be achieved, thereby ensuring the reliability and sealing of the connection between the two.
  • the number of the third holes and the number of the fourth holes are both multiple, the third holes and the fourth holes are arranged one-to-one, and a second connecting member is arranged in each group of the third holes and the fourth holes that are relatively arranged.
  • the lower vehicle body provided in the embodiment of the present application enables the longitudinal beam and the side beam to be connected at multiple points by making the number of the third holes and the fourth holes both multiple and arranged one to one, thereby improving the connection strength between the two.
  • the lower vehicle body further includes a first colloid, and the first colloid is disposed at the connection between the second connecting member and the longitudinal beam, and the first colloid closes the gap between the second connecting member and the hole wall of the fourth hole.
  • the lower vehicle body provided in the embodiment of the present application by including a first colloid, can seal the gap formed between the fourth hole of the longitudinal beam starting from the side of the warehouse body close to the second connecting piece, thereby ensuring the sealing of the longitudinal beam.
  • the sealing performance of the battery can be guaranteed.
  • At least one side of the longitudinal beam in the third direction is welded to the side beam, and the third direction intersects with the first direction and the second direction.
  • the lower vehicle body provided by the implementation of the present application can improve the connection strength between the longitudinal beam and the side beam by welding the longitudinal beam to the side beam on at least one side in the third direction.
  • the welding method can improve the sealing of the joint between the side beam and the longitudinal beam, thereby improving the safety performance of the lower vehicle body.
  • the longitudinal beam includes a first matching portion and a second matching portion that are intersectingly arranged.
  • the first matching portion is stacked and welded with the side beam in the third direction, and the second matching portion is clamped between the side beam and the bin body and is welded with the side beam on the side of the third direction away from the first matching portion.
  • the lower vehicle body provided in the embodiment of the present application has a longitudinal beam adopting the above-mentioned structural form, so that it can be distributed through the first matching part and the second matching part and welded to the side beam to ensure the connection strength between the two.
  • the lower vehicle body further includes a second colloid
  • the first matching portion is provided with the second colloid at the joint between the side of the first matching portion facing away from the warehouse body in the first direction and the side beam
  • the second matching portion is provided with the second colloid at the joint between the side of the second matching portion facing away from the first matching portion in the third direction and the side beam.
  • the lower vehicle body provided in the embodiment of the present application can ensure the connection strength between the longitudinal beam and the side beam through the above-mentioned arrangement, and improve the integrity and sealing between the two.
  • the lower vehicle body further includes a third colloid, and along the first direction, the third colloid is bonded between the longitudinal beam and the side beam.
  • the lower vehicle body provided in the embodiment of the present application can ensure the integrity and connection strength between the longitudinal beam and the side beam by setting the third colloid between the longitudinal beam and the side beam.
  • the setting of the third colloid can also ensure the sealing between the longitudinal beam and the beam, reduce the gap between the two, and improve the sealing.
  • an embodiment of the present application provides a chassis, including a lower vehicle body and a battery provided in the above embodiments, wherein the battery is disposed in a chemical compartment.
  • an embodiment of the present application provides a vehicle, comprising a chassis and an upper body provided in the above embodiment, wherein the upper body is arranged on the chassis and connected to the lower body.
  • FIG1 is a partial isometric view of a lower vehicle body provided in some embodiments of the present application.
  • FIG2 is a partial front view of a lower vehicle body provided in some embodiments of the present application.
  • FIG3 is a partial enlarged view of point A in FIG2 ;
  • FIG4 is a partial schematic diagram of the cooperation between the side beam and the longitudinal beam of the lower vehicle body provided in some embodiments of the present application;
  • FIG5 is a partial isometric view of a longitudinal beam according to some embodiments of the present application.
  • FIG6 is a partial cross-sectional view of a lower vehicle body according to some embodiments of the present application.
  • FIG7 is an enlarged view of point B in FIG6;
  • Fig. 8 is an enlarged view of point C in Fig. 1;
  • FIG9 is an exploded schematic diagram of a chassis provided in some embodiments of the present application.
  • FIG. 10 is an exploded schematic diagram of a vehicle provided in some embodiments of the present application.
  • the terms “installed”, “connected”, “connected”, and “attached” should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements.
  • installed should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements.
  • a and/or B can represent: A exists alone, A and B exist at the same time, and B exists alone.
  • the character "/" in this application generally indicates that the associated objects before and after are in an "or" relationship.
  • an additional adapter is required between the longitudinal beam of the lower vehicle body and the side beam of the chemical chamber to connect the two.
  • This structure wastes a large amount of space in the lower vehicle body, which is not conducive to increasing the space occupied by the chemical chamber, and further not conducive to increasing the battery capacity and driving range.
  • the present application changes the connection method between the longitudinal beam and the side beam so that the two are at least partially stacked and directly connected, without the need for interval arrangement and connection through adapters. This allows the lower vehicle body to reduce space waste while maintaining the same size, providing a larger space for the chemical warehouse.
  • the technical solution described in the embodiments of the present application is applicable to vehicles, which may be new energy vehicles, such as pure electric vehicles, hybrid electric vehicles, or extended-range vehicles.
  • the embodiment of the present application provides a lower vehicle body 1, including a chemical chamber 10 and a longitudinal beam 20,
  • the chemical chamber 10 includes a chamber body 11 and a side beam 12, the chamber body 11 is connected to the side beams 12 on both sides of the first direction X, the side beams 12 extend along the second direction Y, and the first direction X and the second direction Y are arranged to intersect.
  • the chemical chamber 10 is provided with a longitudinal beam 20 on at least one side of the first direction X, and the longitudinal beam 20 is arranged in contact with the side beam 12 and connected to each other.
  • the chemical chamber 10 is used to accommodate the battery 2.
  • the battery 2 may include at least one battery cell 2a.
  • the number of the battery cells 2a included may be one, two, or more.
  • the shape of the chamber body 11 may be polygonal, circular, elliptical, etc. It may be a regular shape or an irregular shape.
  • the chamber body 11 may have a cavity for placing the battery 2.
  • the angle between the first direction X and the second direction Y can be equal to 90 degrees. Of course, it can also be less than or greater than 90 degrees.
  • the first direction X can be selected as the width direction of the lower body 1
  • the second direction Y can be selected as the length direction of the bin body 11, for example, when the lower body 1 is used for a car, the travel direction of the car.
  • the chemical chamber 10 may be provided with a longitudinal beam 20 on one side of the first direction X.
  • the chemical chamber 10 may also be provided with a longitudinal beam 20 on both sides of the first direction X.
  • the fitting arrangement of the longitudinal beam 20 and the side beam 12 can be understood as the longitudinal beam 20 and the side beam 12 being stacked on each other and directly connected.
  • the lower vehicle body 1 provided in the embodiment of the present application includes a chemical chamber 10 and a longitudinal beam 20.
  • the chamber body 11 of the chemical chamber 10 is used to place the battery 2, and the side beam 12 is used to connect with the chamber body 11 and the longitudinal beam 20, which can ensure the functional requirements of the lower vehicle body 1.
  • the longitudinal beam 20 and the side beam 12 are arranged in close contact and connected to each other, and can be directly connected without the need for the two to be arranged at intervals and connected through adapters, so that the lower vehicle body 1 can reduce space waste under the same size and provide a larger occupied space for the chemical chamber 10.
  • a first hole 201 extending along a first direction X is provided on the longitudinal beam 20
  • a second hole 121 arranged opposite to the first hole 201 is provided on the side beam 12
  • the lower body 1 includes a first connecting member 30, which is inserted into the first hole 201 and the second hole 121 and connects the longitudinal beam 20 and the side beam 12.
  • the first hole 201 may be a circular hole, an elliptical hole or a polygonal hole, and the shape and radial dimension of the second hole 121 may be the same as or different from the shape and radial dimension of the first hole 201 .
  • the number of the first holes 201 may be one or more, and the number of the second holes 121 may be equal to the number of the first holes 201 and be arranged one-to-one.
  • the number of one of the first holes 201 and the second holes 121 may be greater than the other, so as to achieve a redundant setting of the holes.
  • the first connecting member 30 may include but is not limited to connecting structures such as bolts, rivets, and pins.
  • the first connecting member 30 may be inserted into each set of the first holes 201 and the second holes 121 that are arranged opposite to each other.
  • the lower vehicle body 1 provided in the embodiment of the present application is provided with a first hole 201 extending along the first direction X on the longitudinal beam 20, and a second hole 121 corresponding to the first hole 201 is provided on the side beam 12.
  • the first connecting member 30 can be used to achieve the requirements of fitting and directly connecting the longitudinal beam 20 and the side beam 12, without adding a transition member such as a threshold beam for transition between the two, thereby ensuring the connection strength between the longitudinal beam 20 and the side beam 12.
  • the first hole 201 is a through hole
  • the second hole 121 is a blind hole
  • the first connecting member 30 is threadedly connected to at least one of the longitudinal beam 20 and the side beam 12 .
  • the first hole 201 may be disposed through the longitudinal beam 20 to form a through hole on the longitudinal beam 20 .
  • the extension dimension of the second hole 121 is smaller than the thickness of the side beam 12 at the position where the second hole 121 is provided, so that the second hole 121 is a blind hole.
  • the hole walls of the first hole 201 and the second hole 121 may be provided with threads to connect with the first connecting member 30.
  • threads may also be provided on the hole wall of one of the first hole 201 and the second hole 121, and the first connecting member 30 may be inserted into the first direction X from the side where one of the first hole 201 and the second hole 121 without threads is located, and be threadedly connected with the other of the first hole 201 and the second hole 121 with threads, so as to realize the connection between the side beam 12 and the longitudinal beam 20.
  • the lower vehicle body 1 provided in the embodiment of the present application makes the first hole 201 a through hole and the second hole 121 a blind hole, which is conducive to the first connecting member 30 to penetrate the longitudinal beam 20 and the side beam 12.
  • the threaded connection has a self-locking function, which can reduce the risk of the side beam 12 and the longitudinal beam 20 being separated from each other during the alignment process of the lower vehicle body 1.
  • the second hole 121 is set in the form of a blind hole, which can prevent external pollutants such as water vapor from entering the warehouse body 11, ensure the sealing performance of the warehouse body 11, and improve the protection level of the battery 2 inside it.
  • the first hole 201 is a strip-shaped hole and the length direction is parallel to the second direction Y.
  • the first hole 201 may be in an elliptical shape, an oval shape, or a rectangular strip shape.
  • first hole 201 when the first hole 201 is elliptical, its length direction may be the direction of its long axis; when the first hole 201 is oval, its length direction may be the direction in which its two arc sides are relatively distributed.
  • the lower vehicle body 1 provided in the embodiment of the present application can offset the manufacturing and processing tolerances and on-site assembly tolerances of the longitudinal beam 20 and the side beam 12 parts by making the first hole 201 a strip hole with the length direction parallel to the second direction Y, thereby ensuring the connection and assembly requirements of the two.
  • an avoidance gap 203 is further provided on the longitudinal beam 20 , and the avoidance gap 203 is provided around the first hole 201 .
  • the relief recess 203 can be formed by removing material from the region surrounding the first hole 201 on the longitudinal beam 20 .
  • the avoidance gap 203 can be set from the side of the longitudinal beam 20 away from the bin body 11 along the first direction X to the side groove where the bin body 11 is located. It can be in the shape of an annular groove and is set around the first hole 201.
  • Each first hole 201 may be provided with a corresponding avoidance gap 203 .
  • the lower vehicle body 1 provided in the embodiment of the present application is provided with the avoidance notch 203 , so that the first connecting member 30 can avoid the disassembly tool during disassembly and assembly, which is beneficial to the disassembly and assembly of the first connecting member 30 .
  • the number of the first holes 201 and the second holes 121 are both multiple, the first holes 201 and the second holes 121 are arranged one-to-one, and a first connecting member 30 is arranged in each group of relatively arranged first holes 201 and second holes 121.
  • the number of the first holes 201 and the number of the second holes 121 can be two, three or more.
  • the distribution pattern of the first holes 201 and the distribution pattern of the second holes 121 may be the same.
  • the plurality of first holes 201 may be arranged at intervals along the same direction. Of course, a portion of the plurality of first holes 201 may be arranged at intervals along the second direction Y and a portion of the first holes 201 may be arranged at intervals along the third direction Z.
  • the lower vehicle body 1 provided in the embodiment of the present application has multiple first holes 201 and one-to-one arrangement of the second holes 121, so that the longitudinal beam 20 and the side beam 12 can be connected at multiple points, thereby improving the connection strength between the two.
  • the longitudinal beam 20 includes a wall portion 21 enclosing an inner cavity 24, a column 22 located in the inner cavity 24, and a reinforcing rib 23 connecting the column 22 and the wall portion 21, and the first hole 201 is set in the column 22.
  • each first hole 201 may be disposed on one of the columns 22 .
  • the reinforcing rib 23 is used to connect the column 22 and the wall portion 21 to support the column 22 at a predetermined position in the inner cavity 24 .
  • the lower vehicle body 1 provided in the embodiment of the present application and the longitudinal beam 20 adopt the above-mentioned structural form, which can ensure the strength and the setting requirements of the first hole 201. At the same time, it can also achieve the effects of economical use, weight reduction and cost reduction.
  • a third hole 122 is provided on the side of the side beam 12 facing the warehouse body 11, and a fourth hole 202 is provided on the longitudinal beam 20 opposite to the third hole 122.
  • the lower body 1 also includes a second connecting member 40, which is inserted into the third hole 122 and the fourth hole 202 and connects the longitudinal beam 20 and the side beam 12.
  • the third hole 122 may be a circular hole, an elliptical hole or a polygonal hole.
  • the shape and radial dimension of the fourth hole 202 may be the same as the shape and radial dimension of the third hole 122 , or may be different.
  • the number of the third holes 122 may be one or more, and the number of the fourth holes 202 may be equal to the number of the third holes 122 and be arranged one-to-one.
  • the number of one of the third holes 122 and the fourth holes 202 may be greater than the other, so as to achieve a redundant setting of the holes.
  • the second connecting member 40 may include but is not limited to connecting structures such as bolts, rivets, etc.
  • the first connecting member 30 may be inserted into each set of the third holes 122 and the fourth holes 202 that are arranged opposite to each other.
  • the lower vehicle body 1 provided in the embodiment of the present application is provided with a longitudinal beam 20 extending along the first direction X.
  • the third hole 122 is provided on the side beam 12, and a fourth hole 202 corresponding to the third hole 122 is provided on the side beam 12.
  • the second connecting member 40 can be used to achieve a reinforced connection between the longitudinal beam 20 and the side beam 12, without adding a threshold beam or other adapter between the two.
  • the reinforced connection between the longitudinal beam 20 and the side beam 12 can be achieved, thereby ensuring the reliability and sealing of the connection between the two.
  • the lower vehicle body 1 provided in the embodiments of the present application has a plurality of third holes 122 and a plurality of fourth holes 202, the third holes 122 and the fourth holes 202 are arranged one-to-one, and a second connecting member 40 is arranged in each group of relatively arranged third holes 122 and fourth holes 202.
  • the number of the third holes 122 and the number of the fourth holes 202 can both be two, three or more.
  • the distribution pattern of the third holes 122 may be the same as the distribution pattern of the fourth holes 202 .
  • the plurality of third holes 122 may be arranged at intervals along the same direction. Of course, a portion of the plurality of third holes 122 may be arranged at intervals along the second direction Y and a portion of the third holes 122 may be arranged at intervals along the third direction Z.
  • the lower vehicle body 1 provided in the embodiment of the present application enables the number of the third holes 122 and the fourth holes 202 to be multiple and arranged one-to-one, thereby further enabling multi-point connection between the longitudinal beam 20 and the side beam 12 to improve the connection strength between the two.
  • the lower vehicle body 1 provided in the embodiment of the present application further includes a first colloid 50 , and the first colloid 50 is provided at the connection between the second connecting member 40 and the longitudinal beam 20 , and the first colloid 50 closes the gap between the second connecting member 40 and the hole wall of the fourth hole 202 .
  • the first colloid 50 may be an adhesive that is fluid in an initial state and curable at a preset temperature, for example, PVC glue or the like.
  • the first colloid 50 may be disposed around the outer circumference of the second connecting member 40 , and may partially fill the gap between the second connecting member 40 and the hole wall of the fourth hole 202 .
  • the fourth hole 202 may be provided with the wall 21 of the longitudinal beam 20 , and the first colloid 50 may be partially stacked on the wall 21 of the longitudinal beam 20 facing the inner cavity 24 and close the gap between the second connecting member 40 and the hole wall of the fourth hole 202 .
  • the lower vehicle body 1 provided in the embodiment of the present application by including the first colloid 50, can seal the gap formed between the fourth hole 202 of the longitudinal beam 20 starting from the side close to the bin body 11 and the second connecting member 40, thereby ensuring the sealing of the longitudinal beam 20.
  • the sealing performance of the battery 2 can be guaranteed.
  • the longitudinal beam 20 is welded to the side beam 12 on at least one side in the third direction Z, and the third direction Z, the first direction X and the second direction Y are arranged to intersect with each other.
  • the longitudinal beam 20 can be welded to the side beam 12 on one side in the third direction Z.
  • the longitudinal beam 20 can also be welded to the side beam 12 on both sides in the third direction Z.
  • the third direction Z and the first direction X and the second direction Y may be arranged perpendicularly in pairs, that is, the angle between any two of them may be 90°. Of course, it is not limited to being perpendicular, and the angle between any two of them may be greater than or less than 90°.
  • the lower vehicle body 1 provided by the implementation of the present application can improve the connection strength between the longitudinal beam 20 and the side beam 12 by welding the longitudinal beam 20 to the side beam 12 on at least one side in the third direction Z. At the same time, the welding method can improve the sealing of the joint between the side beam 12 and the longitudinal beam 20, thereby improving the safety performance of the lower vehicle body 1.
  • the longitudinal beam 20 includes a first matching portion 20a and a second matching portion 20b that are intersectingly arranged, the first matching portion 20a is stacked and welded with the side beam 12 in the third direction Z, the first matching portion 20a and the side beam 12 are connected by a first welding body 80 formed by welding, the second matching portion 20b is clamped between the side beam 12 and the warehouse body 11 and is welded to the side beam 12 on the side of the third direction Z away from the first matching portion 20a, and the second matching portion 20b and the side beam 12 are connected by a second welding body 90 formed by welding.
  • intersection angle between the first matching portion 20a and the second matching portion 20b may be equal to 90°, and of course, may also be greater than or less than 90°.
  • the first matching portion 20a and the second matching portion 20b may be arranged to intersect at one end and extend in a direction away from the intersection at the other end.
  • the lower vehicle body 1 provided in the embodiment of the present application has a longitudinal beam 20 adopting the above-mentioned structural form, so that it can be distributed and welded to the side beam 12 through the first matching portion 20a and the second matching portion 20b to ensure the connection strength between the two.
  • the surfaces of the first matching portion 20a and the second matching portion 20b facing the side beam 12 can be arranged in a plane, and the two can be perpendicular to each other. This allows a right-angle notch to be formed on the longitudinal beam 20.
  • the side beam 12 can be located in the right-angle notch and welded to the first matching portion 20a and the second matching portion 20b, respectively. This can ensure the connection strength between the two and facilitate the assembly and positioning between the longitudinal beam 20 and the side beam 12.
  • the first matching portion 20 a may extend along the first direction X, and a side of the first matching portion 20 a in the first direction X away from the second matching portion 20 b may be welded to the side beam 12 .
  • the second matching portion 20 b may extend along the third direction Z, and a side of the second matching portion 20 b in the third direction Z away from the first matching portion 20 a may be welded to the side beam 12 .
  • the lower vehicle body 1 further includes a second colloid 60 , and the second colloid 60 is provided at a joint between the first matching portion 20 a and the side beam 12 on a side in the first direction X away from the bin body 11 .
  • the second colloid 60 may be an adhesive that is fluid in an initial state and curable at a preset temperature, for example, PVC glue or the like.
  • the second colloid 60 may at least partially fill a joint formed between the first matching portion 20 a and the side beam 12 on a side of the first matching portion 20 a that is away from the bin body 11 in the first direction X.
  • the lower vehicle body 1 provided in the embodiment of the present application can ensure the connection strength between the longitudinal beam 20 and the side beam 12 and improve the integrity and sealing between the two by providing a second colloid 60 at the joint between the first matching portion 20a and the side beam 12 on the side away from the compartment body 11 in the first direction X.
  • a second colloid 60 is disposed at a joint between the second matching portion 20 b and the side beam 12 on a side of the second matching portion 20 b that is away from the first matching portion 20 a in the third direction Z.
  • the second colloid 60 may at least partially fill a joint formed between the second matching portion 20 b and the side beam 12 at a side away from the first matching portion 20 a in the third direction Z.
  • the lower vehicle body 1 provided in the embodiment of the present application can effectively ensure the connection strength between the longitudinal beam 20 and the side beam 12 and improve the integrity and sealing between the two by providing a second colloid 60 at the joint between the second matching portion 20b and the side beam 12 on the side away from the first matching portion 20a in the third direction Z.
  • the welded body between the longitudinal beam 20 and the side beam 12 and the second colloid 60 can be arranged successively in the second direction Y to ensure the sealing of the gap formed between the longitudinal beam 20 and the side beam 12 .
  • the lower vehicle body 1 provided in the embodiment of the present application further includes a third colloid 70 .
  • the third colloid 70 is bonded between the longitudinal beam 20 and the side beam 12 .
  • the third colloid 70 may be in a strip shape or a surface shape.
  • the third colloid 70 may be in the form of a colloid with high bonding strength, such as structural adhesive.
  • the lower vehicle body 1 provided in the embodiment of the present application can ensure the integrity and connection strength between the longitudinal beam 20 and the side beam 12 by disposing the third colloid 70 between the longitudinal beam 20 and the side beam 12.
  • the provision of the third colloid 70 can also ensure the sealing between the longitudinal beam 20 and the side beam, reduce the gap between the two, and improve the sealing.
  • the lower vehicle body 1 provided in the embodiment of the present application includes a chemical warehouse 10, a longitudinal beam 20, a first connecting member 30, a second connecting member 40, a first colloid 50, a second colloid 60 and a third colloid.
  • the chemical warehouse 10 includes a warehouse body 11 and a side beam 12, the warehouse body 11 is connected with the side beam 12 on both sides of the first direction X, the side beam 12 extends along the second direction Y, and the first direction X and the second direction Y are arranged perpendicularly.
  • the chemical warehouse 10 is provided with a longitudinal beam 20 on both sides of the first direction X, and the longitudinal beam 20 is provided with a first hole 201 and a fourth hole 202 extending along the first direction X, and the side beam 12 is provided with a second hole 121 arranged opposite to the first hole 201 and a third hole 122 opposite to the fourth hole 202, the first hole 201 is a through hole and a strip hole, the second hole 121 is a blind hole, and the first connecting member 30 is plugged into the first hole 201 and the second hole 121 and is connected with the threads of the longitudinal beam 20 and the side beam 12.
  • the number of the first holes 201 and the second holes 121 are both multiple, and the first holes 201 and the second holes 121 are arranged one by one, and each set of the first holes 201 and the second holes 121 arranged opposite to each other is provided with a first connecting member 30.
  • the longitudinal beam 20 includes a wall portion 21 enclosing an inner cavity 24, a column 22 located in the inner cavity 24, and a reinforcing rib 23 connecting the column 22 and the wall portion 21, and the first hole 201 is provided in the column 22.
  • the second connecting member 40 is inserted into the third hole 122 and the fourth hole 202 and connects the longitudinal beam 20 and the side beam 12.
  • the number of the third hole 122 and the fourth hole 202 is multiple, and the third hole 122 and the fourth hole 202 are arranged one by one.
  • the second connecting member 40 is arranged in each group of the third holes 122 and the fourth holes 202 arranged opposite to each other.
  • the first colloid 50 is arranged at the connection between the second connecting member 40 and the longitudinal beam 20, and the first colloid 50 closes the gap between the second connecting member 40 and the hole wall of the fourth hole 202.
  • the longitudinal beam 20 is welded to the side beam 12 on one side in the third direction Z, and the third direction Z is arranged perpendicular to the first direction X and the second direction Y.
  • the longitudinal beam 20 includes a first matching portion 20a and a second matching portion 20b which are arranged to intersect each other.
  • the first matching portion 20a is stacked and welded with the side beam 12 in the third direction Z.
  • the second matching portion 20b is clamped between the side beam 12 and the bin body 11 and is welded with the side beam 12 on the side away from the first matching portion 20a in the third direction Z.
  • the second colloid 60 is provided at the joint between the first matching portion 20a and the side beam 12 on the side away from the bin body 11 in the first direction X.
  • the second matching portion 20b is provided at the joint between the side beam 12 and the side beam 12 on the side away from the first matching portion 20a in the third direction Z.
  • the third colloid is bonded between the longitudinal beam 20 and the side beam 12.
  • the present application also provides a chassis 100, including the lower body 1 and the battery 2 provided in the above embodiments, and the battery 2 is arranged in the chemical chamber 10.
  • the battery 2 may include at least one battery cell 2a, and may optionally include multiple battery cells 2a.
  • the chassis 100 provided in the embodiment of the present application includes the lower vehicle body 1 and the battery 2 provided in the above-mentioned embodiments. Since the longitudinal beam 20 and the side beam 12 are arranged in close contact and connected to each other, there is no need for a direct connection between the two, and there is no need for an interval arrangement and connection through an adapter. Therefore, the lower vehicle body 1 can reduce space waste under the same size and provide a larger occupied space for the chemical warehouse 10.
  • an embodiment of the present application further provides a vehicle 1000 , comprising the chassis 100 and the upper vehicle body 3 provided in the above embodiment, wherein the upper vehicle body 3 is disposed on the chassis 100 and connected to the lower vehicle body 1 .
  • the vehicle 1000 provided in the embodiment of the present application includes the chassis 100 and the upper vehicle body 3 provided in the above-mentioned embodiments.
  • the longitudinal beam 20 and the side beam 12 fit together and connect to each other, there is no need for a direct connection between the two, and there is no need for an interval setting and connection through an adapter. This allows the lower vehicle body 1 to reduce space waste under the same size and provide a larger occupied space for the chemical warehouse 10.

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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

一种下车身（1）、底盘（100）以及车辆（1000），下车身（1）包括化学仓（10）以及纵梁（20），化学仓（10）包括仓本体（11）以及边梁（12），仓本体（11）在第一方向（X）的两侧连接有边梁（12），边梁（12）沿第二方向（Y）延伸，第一方向（X）以及第二方向（Y）相交设置。化学仓（10）在第一方向（X）的至少一侧设置有纵梁（20），纵梁（20）与边梁（12）贴合设置并相互连接。

Description

下车身、底盘以及车辆 技术领域
本申请涉及车辆领域，特别涉及下车身、底盘以及车辆。
背景技术
目前随着自动化、智能化发展迅速，新能源车辆越来越受到大众的喜爱与购买。在新能源车辆发展的过程中，如何降低下车身的空间浪费，提高化学仓内电池容量是车辆技术中的一个研究方向。
发明内容
鉴于上述问题，本申请提供一种下车身、底盘以及车辆，降低加车身的空间浪费，提高化学仓内对电池的容量。
第一方面，本申请实施例提供了一种下车身，包括化学仓以及纵梁，化学仓包括仓本体以及边梁，仓本体在第一方向的两侧连接有边梁，边梁沿第二方向延伸，第一方向以及第二方向相交设置。化学仓在第一方向的至少一侧设置有纵梁，纵梁与边梁贴合设置并相互连接。
本申请实施例提供的下车身，包括化学仓以及纵梁，化学仓的仓本体用于放置电池，边梁用于与仓本体以及纵梁连接，能够保证下车身的功能需求。并且，纵梁与边梁贴合设置并相互连接，无需二者之间可直接连接，不需要间隔设置并通过转接件连接，使得下车身在同等尺寸情况下，能够减少空间浪费，为化学仓提供更大占用空间。
在一些实施例中，纵梁上设置有沿第一方向延伸的第一孔，边梁上设置有与第一孔相对设置的第二孔，下车身包括第一连接件，第一连接件插接于第一孔以及第二孔并将纵梁与边梁连接。
本申请实施例提供的下车身，通过在纵梁上设置有沿第一方向延伸的第一孔，并在边梁上设置与第一孔对应的第二孔，利用第一连接件能够实现纵梁与边梁之间的贴合并直接连接需求，无需在二者之间新增起转接作用的门槛梁等转接件，可保证纵梁与边梁之间的连接强度。
在一些实施例中，第一孔为通孔，第二孔为盲孔，第一连接件与纵梁以及边梁的至少一者螺纹连接。
本申请实施例提供的下车身，通过使得第一孔为通孔，第二孔为盲孔，利于第一连接件穿射于纵梁以及边梁。同时，通过使得第一连接件与纵梁以及边梁的至少一者螺纹连接，利于固定纵梁与边梁之间的相对位置，提高二者的连接强度。并且，螺纹连接具有自锁功能，能够降低下车身在针对过程中边梁与纵梁彼此分离的风险。第二孔为盲孔的设置形式，能够阻止外部水汽等污染物进入仓本体，保证仓本体的密封性能。
在一些实施例中，第一孔呈条形孔且长度方向与第二方向平行设置。
本申请实施例提供的下车身，通过使得第一孔呈条形孔且长度方向与第二方向平行，能够抵消纵梁和边梁零件的制造加工公差和现场装配公差，保证二者的连接以及装配需求。
在一些实施例中，纵梁上还设置有避让缺口，避让缺口环绕第一孔设置。
本申请实施例提供的下车身，通过设置避让缺口，使得第一连接件在拆装时，能够对拆装工具进行避让，利于第一连接件的拆装。
在一些实施例中，第一孔以及第二孔的数量均为多个，第一孔以及第二孔一对一设置，每组相对设置的第一孔以及第二孔内均设置有第一连接件。
本申请实施例提供的下车身，通过使得第一孔以及第二孔的数量均为多个且一对一设置，使得纵梁与边梁之间可以采用多点连接，提高二者的连接强度。
在一些实施例中，纵梁包括围合形成有内腔的壁部、位于内腔中的柱体以及连接柱体以及壁部的加强筋，第一孔设置于柱体。
本申请实施例提供的下车身，纵梁采用上述结构形式，在保证其强度的同时，能够保证第一孔的设置要求。同时，还能够实现节约采用，减重降本等效果。
在一些实施例中，沿第一方向，边梁朝向仓本体的一侧设置有第三孔，纵梁上设置有与第三孔相对设置的第四孔，下车身还包括第二连接件，第二连接件插接于第三孔以及第四孔并将纵梁以及边梁连接。
本申请实施例提供的下车身，通过在纵梁上设置有沿第一方向延伸的第三孔，并在边梁上设置与第三孔对应的第四孔，利用第二连接件能够实现纵梁与边梁之间的加强连接，无需在二者之间新增起转接作用的门槛梁等转接件，可实现纵梁与边梁之间的加强连接，保证二者之间连接的可靠性以及密封性。
在一些实施例中，第三孔以及第四孔的数量均为多个，第三孔以及第四孔一对一设置，每组相对设置的第三孔以及第四孔内均设置有第二连接件。
本申请实施例提供的下车身，通过使得第三孔以及第四孔的数量均为多个且一对一设置，进一步使得纵梁与边梁之间可以采用多点连接，提高二者的连接强度。
在一些实施例中，下车身还包括第一胶体，第二连接件与纵梁的连接处设置有第一胶体，第一胶体封闭第二连接件与第四孔的孔壁之间的间隙。
本申请实施例提供的下车身，通过使其包括第一胶体，能够对纵梁靠近仓本体侧开始的第四孔与第二连接件之间形成的间隙进行密封，保证纵梁的密封性，当仓本体内放置电池时，能够保证对电池的密封性能。
在一些实施例中，纵梁在第三方向上的至少一侧与边梁焊接连接，第三方向与第一方向以及第二方向彼此相交设置。
本申请实施提供的下车身，通过使得纵梁在第三方向上的至少一侧与边梁焊接连接，既能够提高纵梁与边梁之间的连接强度，同时，焊接的方式能够提高边梁与纵梁对接处的密封，提高下车身的安全性能。
在一些实施例中，纵梁包括相交设置的第一配合部以及第二配合部，第一配合 部在第三方向与边梁层叠设置并焊接连接，第二配合部夹持于边梁与仓本体之间且在第三方向背离第一配合部的一侧与边梁焊接连接。
本申请实施例提供的下车身，纵梁采用上述结构形式，使其可以分布通过第一配合部以及第二配合部与边梁之间焊接连接，保证二者之间的连接强度。
在一些实施例中，下车身还包括第二胶体，第一配合部在第一方向背离仓本体的一侧与边梁的对接缝处设置有第二胶体，和/或，第二配合部在第三方向背离第一配合部的一侧与边梁的对接缝处设置有第二胶体。
本申请实施例提供的下车身，通过上述设置，能够保证纵梁与边梁之间的连接强度，提高二者之间的整体性以及密封性。
在一些实施例中，下车身还包括第三胶体，沿第一方向，第三胶体粘接于纵梁以及边梁之间。
本申请实施例提供的下车身，通过在纵梁以及边梁之间设置第三胶体，能够保证纵梁与边梁之间的整体性以及连接强度。并且，第三胶体的设置还能够保证纵梁与衡量之间的密封性，减小二者之间的空隙，提高密封性。
第二方面，本申请实施例提供了一种底盘，包括上述各实施例提供的下车身以及电池，电池设置于化学仓。
第三方面，本申请实施例提供了一种车辆，包括上述实施例提供的底盘以及上车身，上车身设置于底盘并与下车身连接。
附图说明
为了更清楚地说明本申请实施例的技术方案，下面将对本申请实施例中所需要使用的附图作简单地介绍，显而易见地，下面所描述的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据附图获得其他的附图。
图1是本申请一些实施例提供的下车身的局部轴测图；
图2是本申请一些实施例提供的下车身的局部正视图；
图3是图2中的A处的局部放大图；
图4是本申请一些实施例提供的下车身的边梁与纵梁配合的局部示意图；
图5是本申请一些实施例的纵梁的局部轴测图；
图6是本申请一些实施例的下车身的局部剖视图；
图7是图6中B处放大图；
图8是图1中C处放大图；
图9是本申请一些实施例提供的底盘的分解示意图；
图10是本申请一些实施例提供的车辆的分解示意图。
具体实施方式中的附图标号如下：
1-下车身；
10-化学仓；11-仓本体；12-边梁；121-第二孔；122-第三孔；
20-纵梁；201-第一孔；202-第四孔；203-避让缺口；21-壁部；22-柱体；23-加强筋；24-内腔；20a-第一配合部；20b-第二配合部；
30-第一连接件；40-第二连接件；50-第一胶体；60-第二胶体；70-第三胶体；80-第一焊接体；90-第二焊接体；
2-电池；2a-电池单体；
3-上车身；
100-底盘；1000-车辆；
X-第一方向；Y-第二方向；Z-第三方向。
具体实施方式
为使本申请实施例的目的、技术方案和优点更加清楚，下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚地描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
除非另有定义，本申请所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同；本申请中在申请的说明书中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本申请；本申请的说明书和权利要求书及上述附图说明中的术语“包括”和“具有”以及它们的任何变形，意图在于覆盖不排他的包含。本申请的说明书和权利要求书或上述附图中的术语“第一”、“第二”等是用于区别不同对象，而不是用于描述特定顺序或主次关系。
在本申请中提及“实施例”意味着，结合实施例描述的特定特征、结构或特性可以包含在本申请的至少一个实施例中。在说明书中的各个位置出现该短语并不一定均是指相同的实施例，也不是与其它实施例互斥的独立的或备选的实施例。
在本申请的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“附接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
本申请中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本申请中字符“/”，一般表示前后关联对象是一种“或”的关系。
在本申请的实施例中，相同的附图标记表示相同的部件，并且为了简洁，在不同实施例中，省略对相同部件的详细说明。应理解，附图示出的本申请实施例中的各种部件的厚度、长宽等尺寸，以及集成装置的整体厚度、长宽等尺寸仅为示例性说 明，而不应对本申请构成任何限定。
本申请中出现的“多个”指的是两个以上(包括两个)。
目前随着自动化、智能化发展迅速，新能源车辆越来越受到大众的喜爱与购买。在提升续航里程的需求推动下，电池直接集成到下车身上已经成为行业发展的必然趋势，实现增加汽车续航里程的目的。
相关技术中的下车身，其纵梁与化学仓的边梁之间需要额外设置转接件将二者连接，这种结构使得下车身浪费了较大空间，不利于化学仓占用空间的提升，进而不利于电池容量及续航里程的增加，
基于此，本申请通过改变纵梁与边梁之间的连接方式，使得二者至少部分层叠设置并可直接连接，不需要间隔设置并通过转接件连接，使得下车身在同等尺寸情况下，能够减少空间浪费，为化学仓提供更大占用空间。
本申请实施例描述的技术方案适用于车辆，车辆可以是新能源汽车，可以是纯电动汽车、混合动力汽车或增程式汽车等。
如图1至图4所示，本申请实施例提供一种下车身1，包括化学仓10以及纵梁20，化学仓10包括仓本体11以及边梁12，仓本体11在第一方向X的两侧连接有边梁12，边梁12沿第二方向Y延伸，第一方向X以及第二方向Y相交设置。化学仓10在第一方向X的至少一侧设置有纵梁20，纵梁20与边梁12贴合设置并相互连接。
化学仓10用于承装电池2，电池2可以包括至少一个电池单体2a，所包括的电池单体2a的数量可以为一个、两个或者更多个。仓本体11的形状可以多边形、圆形、椭圆形等等，可以为规则的形状，当然也可以为不规则的形状。仓本体11可以具有空腔，用于放置电池2。
第一方向X以及第二方向Y二者之间的相交的夹角可以等于90°。当然，也可以小于或者大于90度。示例性的，第一方向X可选为下车身1的宽度方向，第二方向Y可选为仓本体11的长度方向，例如下车身1在用于汽车时，汽车的行进方向。
化学仓10可以在第一方向X的一侧设置有纵梁20，当然，化学仓10也可以在第一方向X的两侧均设置有纵梁20。
纵梁20与边梁12贴合设置可以理解为纵梁20与边梁12彼此相互层叠且直接连接。
本申请实施例提供的下车身1，包括化学仓10以及纵梁20，化学仓10的仓本体11用于放置电池2，边梁12用于与仓本体11以及纵梁20连接，能够保证下车身1的功能需求。并且，纵梁20与边梁12贴合设置并相互连接，无需二者之间可直接连接，不需要间隔设置并通过转接件连接，使得下车身1在同等尺寸情况下，能够减少空间浪费，为化学仓10提供更大占用空间。
在一些实施例中，纵梁20上设置有沿第一方向X延伸的第一孔201，边梁12上设置有与第一孔201相对设置的第二孔121，下车身1包括第一连接件30，第一连接件30插接于第一孔201以及第二孔121并将纵梁20以及边梁12连接。
第一孔201可以是圆孔、椭圆孔或者多边形孔，第二孔121的形状以及径向尺寸与第一孔201的形状以及径向尺寸可以相同，当然也可以不同。
第一孔201的数量可以为一个，也可以为多个，第二孔121的数量可以与第一孔201的数量可以相等并一对一设置。当然，为了保证连接需求，可以使得第一孔201以及第二孔121中一者的数量多于另一者，实现孔的冗余设置。
第一连接件30可以包括但不限于螺栓、铆钉、销轴等连接结构。每组相对设置的第一孔201以及第二孔121内均可以插接有第一连接件30。
本申请实施例提供的下车身1，通过在纵梁20上设置有沿第一方向X延伸的第一孔201，并在边梁12上设置与第一孔201对应的第二孔121，利用第一连接件30能够实现纵梁20与边梁12之间的贴合并直接连接需求，无需在二者之间新增起转接作用的门槛梁等转接件，可保证纵梁20与边梁12之间的连接强度。
在一些实施例中，第一孔201为通孔，第二孔121为盲孔，第一连接件30与纵梁20以及边梁12的至少一者螺纹连接。
沿第一方向X，第一孔201可以贯穿纵梁20设置，以在纵梁20上形成贯穿孔。
沿第一方向X，第二孔121的延伸尺寸小于边梁12设置第二孔121的位置的厚度，使得第二孔121呈盲孔。
在第一孔201以及第二孔121的孔壁上均可以设置有螺纹，以与第一连接件30连接。当然也可以使得第一孔201以及第二孔121一者的孔壁上设置有螺纹，第一连接件30可以沿第一方向X由未设置螺纹第一孔201以及第二孔121的一者所在侧插接进入，并与设置于有螺纹的第一孔201以及第二孔121的另一者螺纹连接，实现边梁12与纵梁20的连接。
本申请实施例提供的下车身1，通过使得第一孔201为通孔，第二孔121为盲孔，利于第一连接件30穿射于纵梁20以及边梁12。同时，通过使得第一连接件30与纵梁20以及边梁12的至少一者螺纹连接，利于固定纵梁20与边梁12之间的相对位置，提高二者的连接强度。并且，螺纹连接具有自锁功能，能够降低下车身1在针对过程中边梁12与纵梁20彼此分离的风险。第二孔121为盲孔的设置形式，能够阻止外部水汽等污染物进入仓本体11，保证仓本体11的密封性能，提高对其内部电池2的防护等级。
在一些可选地实施例中，本申请实施例提供的下车身1，第一孔201呈条形孔且长度方向与第二方向Y平行设置。
第一孔201可以呈椭圆形、腰圆形或者矩形条状。
示例性地，当第一孔201呈椭圆形时，其长度方向可以为其长轴方向，当第一孔201为腰圆形时，其长度方向可以为其两个弧形边相对分布的方向。
本申请实施例提供的下车身1，通过使得第一孔201呈条形孔且长度方向与第二方向Y平行，能够抵消纵梁20与边梁12零件的制造加工公差和现场装配公差，保证二者的连接以及装配需求。
在一些可选地实施例中，本申请实施例提供的下车身1，纵梁20上还设置有避让缺口203，避让缺口203环绕第一孔201设置。
避让缺口203可以通过在纵梁20上围绕第一孔201的区域去除材料形成。
避让缺口203可以由纵梁20沿第一方向X背离仓本体11的一侧起始向仓本体11所在侧凹槽设置，其可以呈环形槽状并围绕第一孔201设置。
每个第一孔201可以对应设置一个避让缺口203。
本申请实施例提供的下车身1，通过设置避让缺口203，使得第一连接件30在拆装时，能够对拆装工具进行避让，利于第一连接件30的拆装。
在一些可选地实施例中，第一孔201以及第二孔121的数量均为多个，第一孔201以及第二孔121一对一设置，每组相对设置的第一孔201以及第二孔121内均设置有第一连接件30。
第一孔201以及第二孔121的数量可以均为两个、三个或者更多个。
第一孔201的分布图案与第二孔121的分布图案可以相同。
多个第一孔201可以沿同一方向间隔设置。当然，多个第一孔201中可以部分数量的第一孔201沿第二方向Y间隔分布且部分第一孔201沿第三方向Z间隔分布。
本申请实施例提供的下车身1，通过使得第一孔201以及第二孔121的数量均为多个且一对一设置，使得纵梁20与边梁12之间可以采用多点连接，提高二者的连接强度。
如图1至图5所示，在一些实施例中，本申请实施例提供的下车身1，纵梁20包括围合形成有内腔24的壁部21、位于内腔24中的柱体22以及连接柱体22以及壁部21的加强筋23，第一孔201设置于柱体22。
内腔24中设置的柱体22的数量可以为多个且彼此间隔设置，柱体22可以沿地方向延伸，每个第一孔201可以设置于其中一个柱体22上。
加强筋23用于连接柱体22以及壁部21，以将柱体22支撑在内腔24的预定位置。
本申请实施例提供的下车身1，纵梁20采用上述结构形式，在保证其强度的同时，能够保证第一孔201的设置要求。同时，还能够实现节约采用，减重降本等效果。
如图1至图7所示，在一些实施例中，沿第一方向X，边梁12朝向仓本体11的一侧设置有第三孔122，纵梁20上设置有与第三孔122相对设置的第四孔202，下车身1还包括第二连接件40，第二连接件40插接于第三孔122以及第四孔202并将纵梁20以及边梁12连接。
第三孔122可以是圆孔、椭圆孔或者多边形孔，第四孔202的形状以及径向尺寸与第三孔122的形状以及径向尺寸可以相同，当然也可以不同。
第三孔122的数量可以为一个，也可以为多个，第四孔202的数量可以与第三孔122的数量相等并一对一设置。当然，为了保证连接需求，可以使得第三孔122以及第四孔202中一者的数量多于另一者，实现孔的冗余设置。
第二连接件40可以包括但不限于螺栓、铆钉等连接结构。每组相对设置的第三孔122以及第四孔202内均可以插接有第一连接件30。
本申请实施例提供的下车身1，通过在纵梁20上设置有沿第一方向X延伸 的第三孔122，并在边梁12上设置与第三孔122对应的第四孔202，利用第二连接件40能够实现纵梁20与边梁12之间的加强连接，无需在二者之间新增起转接作用的门槛梁等转接件，可实现纵梁20与边梁12之间的加强连接，保证二者之间连接的可靠性以及密封性。
在一些可选地实施例中，本申请实施例提供的下车身1，第三孔122以及第四孔202的数量均为多个，第三孔122以及第四孔202一对一设置，每组相对设置的第三孔122以及第四孔202内均设置有第二连接件40。
第三孔122以及第四孔202的数量可以均为两个、三个或者更多个。
第三孔122的分布图案与第四孔202的分布图案可以相同。
多个第三孔122可以沿同一方向间隔设置。当然，多个第三孔122中可以部分数量的第三孔122沿第二方向Y间隔分布且部分第三孔122沿第三方向Z间隔分布。
本申请实施例提供的下车身1，通过使得第三孔122以及第四孔202的数量均为多个且一对一设置，进一步使得纵梁20与边梁12之间可以采用多点连接，提高二者的连接强度。
在一些可选地实施例中，本申请实施例提供的下车身1，还包括第一胶体50，第二连接件40与纵梁20的连接处设置有第一胶体50，第一胶体50封闭第二连接件40与第四孔202的孔壁之间的间隙。
第一胶体50可以采用初始状态具有流动性，在预设温度下可固化的粘接剂。示例性的，可以采用PVC胶等。
第一胶体50可以围绕第二连接件40的外周设置，其可以部分填充于第二连接件40与第四孔202的孔壁之间的间隙。
第四孔202可以设置纵梁20的壁部21，第一胶体50可以部分层叠在纵梁20朝向内腔24的壁部21并封闭第二连接件40与第四孔202的孔壁之间的间隙。
本申请实施例提供的下车身1，通过使其包括第一胶体50，能够对纵梁20靠近仓本体11侧开始的第四孔202与第二连接件40之间形成的间隙进行密封，保证纵梁20的密封性，当仓本体11内放置电池2时，能够保证对电池2的密封性能。
在一些可选地实施例中，纵梁20在第三方向Z上的至少一侧与边梁12焊接连接，第三方向Z与第一方向X以及第二方向Y彼此相交设置。
纵梁20可以在第三方向Z的一侧与边梁12焊接，当然，纵梁20也可以在第三方向Z的两侧与边梁12焊接。
第三方向Z与第一方向X以及第二方向Y可以两两垂直设置，也就是说，任意二者之间的夹角可以为90°，当然，不限于垂直，任意二者之间的夹角也可以大于或者小于90°。
本申请实施提供的下车身1，通过使得纵梁20在第三方向Z上的至少一侧与边梁12焊接连接，既能够提高纵梁20与边梁12之间的连接强度，同时，焊接的方式能够提高边梁12与纵梁20对接处的密封，提高下车身1的安全性能。
继续参阅图1至图8所示，在一些实施例中，纵梁20包括相交设置的第一配合部20a以及第二配合部20b，第一配合部20a在第三方向Z与边梁12层叠设置并焊接连接，第一配合部20a与边梁12之间通过焊接形成的第一焊接体80连接，第二配合部20b夹持于边梁12与仓本体11之间且在第三方向Z背离第一配合部20a的一侧与边梁12焊接连接，第二配合部20b与边梁12之间通过焊接形成的第二焊接体90连接。
第一配合部20a以及第二配合部20b之间的交角可以等于90°，当然，也可以大于或者小于90°。
第一配合部20a以及第二配合部20b可以一端相交设置且另一端向远离相交位置的方向延伸。
本申请实施例提供的下车身1，纵梁20采用上述结构形式，使其可以分布通过第一配合部20a以及第二配合部20b与边梁12之间焊接连接，保证二者之间的连接强度。
可选地，第一配合部20a以及第二配合部20b朝向边梁12的表面均可以采用平面设置，二者之间可以相垂直。使得纵梁20上可以形成有直角缺口。边梁12可以位于直角缺口内并分别与第一配合部20a以及第二配合部20b焊接连接。既能够保证二者的连接强度，同时利于纵梁20与边梁12之间的装配定位。
可选地，可以使得第一配合部20a沿第一方向X延伸，第一配合部20a在第一方向X上背离第二配合部20b的一侧可以与边梁12焊接连接。
可选地，可以使得第二配合部20b沿第三方向Z延伸，第二配合部20b在第三方向Z上背离第一配合部20a的一侧可以与边梁12焊接连接。
如图6至图8所示，在一些实施例中，下车身1还包括第二胶体60，第一配合部20a在第一方向X背离仓本体11的一侧与边梁12的对接缝处设置有第二胶体60。
第二胶体60可以采用初始状态具有流动性，在预设温度下可固化的粘接剂。示例性的，可以采用PVC胶等。
第二胶体60可以至少部分填充在第一配合部20a在第一方向X背离仓本体11的一侧与边梁12形成的对接缝内。
本申请实施例提供的下车身1，通过在第一配合部20a在第一方向X背离仓本体11的一侧与边梁12的对接缝处设置有第二胶体60，能够保证纵梁20与边梁12之间的连接强度，提高二者之间的整体性以及密封性。
在一些实施例中，第二配合部20b在第三方向Z背离第一配合部20a的一侧与边梁12的对接缝处设置有第二胶体60。
第二胶体60可以至少部分填充在第二配合部20b在第三方向Z背离第一配合部20a的一侧与边梁12形成的对接缝内。
本申请实施例提供的下车身1，通过在第二配合部20b在第三方向Z背离第一配合部20a的一侧与边梁12的对接缝处设置有第二胶体60，能够有效的保证纵梁20与边梁12之间的连接强度，提高二者之间的整体性以及密封性。
沿第二方向Y，纵梁20以及边梁12之间的焊接体与第二胶体60可以在第二方向Y上相继设置，保证纵梁20与边梁12之间形成缝隙的密封性。
如图4至图8所示，在一些实施例中，本申请实施例提供的下车身1，还包括第三胶体70，沿第一方向X，第三胶体70粘接于纵梁20以及边梁12之间。
第三胶体70可以是条状、也可以是面状。
第三胶体70可以采用结构胶等粘接强度高的胶体形式。
本申请实施例提供的下车身1，通过在纵梁20以及边梁12之间设置第三胶体70，能够保证纵梁20与边梁12之间的整体性以及连接强度。并且，第三胶体70的设置还能够保证纵梁20与衡量之间的密封性，减小二者之间的空隙，提高密封性。
本申请实施例提供的下车身1，包括化学仓10、纵梁20、第一连接件30、第二连接件40、第一胶体50、第二胶体60以及第三胶体。化学仓10包括仓本体11以及边梁12，仓本体11在第一方向X的两侧连接有边梁12，边梁12沿第二方向Y延伸，第一方向X以及第二方向Y相垂直设置。化学仓10在第一方向X的两侧设置有纵梁20，纵梁20上设置有沿第一方向X延伸的第一孔201以及第四孔202，边梁12上设置有与第一孔201相对设置的第二孔121以及与第四孔202相对的第三孔122，第一孔201为通孔且为条形孔，第二孔121为盲孔，第一连接件30插接于第一孔201以及第二孔121并与纵梁20以及边梁12的螺纹连接。第一孔201以及第二孔121的数量均为多个，第一孔201以及第二孔121一对一设置，每组相对设置的第一孔201以及第二孔121内均设置有第一连接件30。纵梁20包括围合形成有内腔24的壁部21、位于内腔24中的柱体22以及连接柱体22以及壁部21的加强筋23，第一孔201设置于柱体22。
第二连接件40插接于第三孔122以及第四孔202并将纵梁20以及边梁12连接。第三孔122以及第四孔202的数量均为多个，第三孔122以及第四孔202一对一设置，每组相对设置的第三孔122以及第四孔202内均设置有第二连接件40。第二连接件40与纵梁20的连接处设置有第一胶体50，第一胶体50封闭第二连接件40与第四孔202的孔壁之间的间隙。纵梁20在第三方向Z上的一侧与边梁12焊接连接，第三方向Z与第一方向X以及第二方向Y彼此垂直设置。纵梁20包括相交设置的第一配合部20a以及第二配合部20b，第一配合部20a在第三方向Z与边梁12层叠设置并焊接连接，第二配合部20b夹持于边梁12与仓本体11之间且在第三方向Z背离第一配合部20a的一侧与边梁12焊接连接。第一配合部20a在第一方向X背离仓本体11的一侧与边梁12的对接缝处设置有第二胶体60。第二配合部20b在第三方向Z背离第一配合部20a的一侧与边梁12的对接缝处设置有第二胶体60。沿第一方向X，第三胶体粘接于纵梁20以及边梁12之间。
如图9所示，第二方面，本申请实施例还提供一种底盘100，包括上述各实施例提供的下车身1以及电池2，电池2设置于化学仓10。电池2可以包括至少一个电池单体2a，可选包括多个电池单体2a。
本申请实施例提供的底盘100，由于其包括上述各实施例提供的下车身1以及电池2，由于纵梁20与边梁12贴合设置并相互连接，无需二者之间可直接连接，不需要间隔设置并通过转接件连接，使得下车身1在同等尺寸情况下，能够减少空间浪费，为化学仓10提供更大占用空间。
如图10所示，第三方面，本申请实施例还提供一种车辆1000，包括上述实施例提供的底盘100以及上车身3，上车身3设置于底盘100并与下车身1连接。
本申请实施例提供的车辆1000，由于其包括上述各实施例提供的底盘100以及上车身3，通过使得纵梁20与边梁12贴合设置并相互连接，无需二者之间可直接连接，不需要间隔设置并通过转接件连接，使得下车身1在同等尺寸情况下，能够减少空间浪费，为化学仓10提供更大占用空间。
最后应说明的是：以上各实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述各实施例对本申请进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本申请各实施例技术方案的范围，其均应涵盖在本申请的权利要求和说明书的范围当中。尤其是，只要不存在结构冲突，各个实施例中所提到的各项技术特征均可以任意方式组合起来。本申请并不局限于文中公开的特定实施例，而是包括落入权利要求的范围内的所有技术方案。

Claims (16)

  1. 一种下车身，包括：
    化学仓，包括仓本体以及边梁，所述仓本体在第一方向的两侧连接有所述边梁，所述边梁沿第二方向延伸，所述第一方向以及所述第二方向相交设置；
    纵梁，所述化学仓在所述第一方向的至少一侧设置有所述纵梁，所述纵梁与所述边梁贴合设置并相互连接。
  2. 根据权利要求1所述的下车身，其中，所述纵梁上设置有沿所述第一方向延伸的第一孔，所述边梁上设置有与所述第一孔相对设置的第二孔，所述下车身包括第一连接件，所述第一连接件插接于所述第一孔以及所述第二孔并将所述纵梁与所述边梁连接。
  3. 根据权利要求2所述的下车身，其中，所述第一孔为通孔，所述第二孔为盲孔，所述第一连接件与所述纵梁以及所述边梁的至少一者螺纹连接。
  4. 根据权利要求2或3所述的下车身，其中，所述第一孔呈条形孔且长度方向与所述第二方向平行设置。
  5. 根据权利要求2至4任意一项所述的下车身，所述纵梁上还设置有避让缺口，所述避让缺口环绕所述第一孔设置。
  6. 根据权利要求2至5任意一项所述的下车身，其中，所述第一孔以及第二孔的数量均为多个，所述第一孔以及所述第二孔一对一设置，每组相对设置的所述第一孔以及第二孔内均设置有所述第一连接件。
  7. 根据权利要求1至6任意一项所述的下车身，其中，所述纵梁包括围合形成有内腔的壁部、位于所述内腔中的柱体以及连接所述柱体以及所述壁部的加强筋，所述第一孔设置于所述柱体。
  8. 根据权利要求1至7任意一项所述的下车身，其中，沿所述第一方向，所述边梁朝向所述仓本体的一侧设置有第三孔，所述纵梁上设置有与所述第三孔相对设置的第四孔，所述下车身还包括第二连接件，所述第二连接件插接于所述第三孔以及所述第四孔并将所述纵梁以及所述边梁连接。
  9. 根据权利要求8所述的下车身，其中，所述第三孔以及所述第四孔的数量均为多个，所述第三孔以及所述第四孔一对一设置，每组相对设置的所述第三孔以及所述第四孔内均设置有所述第二连接件。
  10. 根据权利要求8或9所述的下车身，其中，所述下车身还包括第一胶体，所述第二连接件与所述纵梁的连接处设置有所述第一胶体，所述第一胶体封闭所述第二连接件与所述第四孔的孔壁之间的间隙。
  11. 根据权利要求1至10任意一项所述的下车身，其中，所述纵梁在第三方向上的至少一侧与所述边梁焊接连接，所述第三方向与所述第一方向以及所述第二方向彼此相交设置。
  12. 根据权利要求11所述的下车身，其中，所述纵梁包括相交设置的第一配合部以及第二配合部，所述第一配合部在所述第三方向与所述边梁层叠设置并焊接连接，所 述第二配合部夹持于所述边梁与所述仓本体之间且在所述第三方向背离所述第一配合部的一侧与所述边梁焊接连接。
  13. 根据权利要求11或12所述的下车身，其中，所述下车身还包括第二胶体，所述第一配合部在所述第一方向背离所述仓本体的一侧与所述边梁的对接缝处设置有所述第二胶体，和/或，所述第二配合部在所述第三方向背离所述第一配合部的一侧与所述边梁的对接缝处设置有所述第二胶体。
  14. 根据权利要求1至13任意一项所述的下车身，其中，所述下车身还包括第三胶体，沿所述第一方向，所述第三胶体粘接于所述纵梁以及所述边梁之间。
  15. 一种底盘，包括：
    如权利要求1至14任意一项所述的下车身；
    电池，设置于所述化学仓。
  16. 一种车辆，包括：
    如权利要求15所述的底盘；
    上车身，设置于所述底盘并与所述下车身连接。
PCT/CN2023/090393 2023-04-24 2023-04-24 下车身、底盘以及车辆 Ceased WO2024221191A1 (zh)

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