Vehicle body chassis and electric vehicle

Abstract

The invention discloses a vehicle body chassis and an electric vehicle, and belongs to the technical field of vehicle body structures. The vehicle body chassis comprises a chassis body and a plurality of battery components. The chassis body comprises a pair of first longitudinal beams, a pair of second longitudinal beams, a first cross beam and a second cross beam. The pair of second longitudinal beams are arranged on the two sides of the pair of first longitudinal beams, the first cross beams are connected with the same ends of the first longitudinal beams and the second longitudinal beams, and the second cross beams are connected with the other ends of the first longitudinal beams and the second longitudinal beams. The first cross beam, the second cross beam and the pair of first longitudinal beams enclose to form an assembly area, and the first cross beam, the second cross beam, the first longitudinal beams and the second longitudinal beams enclose to form a buffer area. And the plurality of battery components are distributed in the assembly area. The multiple battery components are distributed on the assembly area formed on the chassis body, the whole vehicle height space occupied by the battery components is released, and the space utilization rate of a passenger compartment is increased. The space of the chassis body is large, the battery components are distributed in the assembly area, and the specific energy of the battery space is improved.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle body structures, and in particular to a vehicle body chassis and an electric vehicle. Background Art

[0002] In recent years, electric vehicles have been widely optimistic about their prospects due to their advantages in environmental protection, power performance, intelligence, and simplified structure. Electric vehicles include structures such as body, chassis, battery, wheels, and motor. As the main power source of electric vehicles, batteries convert chemical energy into electrical energy to drive the motor to work, thereby driving the vehicle.

[0003] In the related art, the integration of the battery and the chassis in electric vehicles is achieved by mounting the battery as an independent component under the chassis, that is, forming a series structure with the chassis in height, and connecting the battery and the chassis by bolts or quick-connect connectors.

[0004] This will occupy a large amount of passenger compartment space in terms of height, which is not conducive to the human-machine layout and space layout of passenger cars. In addition, since the battery has anti-collision requirements, the battery side longitudinal beams, as safety load-bearing beams, need to be designed as structural parts with high rigidity. The collision collapse requires a certain amount of collision collapse to be reserved in the width direction of the vehicle body, which compresses the layout space of the battery components. At the vehicle level, in order to better protect the battery, the battery needs to be retracted to the inside of the side longitudinal beams of the chassis in the width direction of the vehicle body, which further reduces the space available for the battery components to be arranged. The combination of various factors has resulted in a limited number of battery components that can be placed in the large lower floor space, greatly reducing the battery's space specific energy. Summary of the invention

[0005] The present disclosure provides a vehicle chassis and an electric vehicle, which can solve the problems of low space utilization rate of the passenger compartment of electric vehicles and low battery space specific energy in the prior art. The technical solution is as follows:

[0006] In a first aspect, a vehicle chassis is provided, comprising: a chassis body and a plurality of battery components;

[0007] The chassis body includes a pair of first longitudinal beams, a pair of second longitudinal beams, a first cross beam and a second cross beam; the pair of second longitudinal beams are arranged on both sides of the pair of first longitudinal beams, the first cross beam is fixedly connected to the same end of the first longitudinal beam and the second longitudinal beam, and the second cross beam is fixedly connected to the other ends of the first longitudinal beam and the second longitudinal beam; the first cross beam, the second cross beam and the pair of first longitudinal beams enclose an assembly area, and the first cross beam, the second cross beam, the first longitudinal beam and the second longitudinal beam enclose a buffer area;

[0008] The plurality of battery components are distributed in the assembly area.

[0009] Optionally, the chassis body further includes: a third crossbeam disposed between the first crossbeam and the second crossbeam, the third crossbeam being fixedly connected to a pair of the first longitudinal beams and a pair of the second longitudinal beams, and the third crossbeam is used to separate the assembly area into a first assembly area and a second assembly area;

[0010] Part of the battery components among the plurality of battery components are distributed in the first assembly area, and another part of the battery components among the plurality of battery components are distributed in the second assembly area.

[0011] Optionally, the vehicle chassis further includes: a first controller and a second controller;

[0012] The first controller is located in the first assembly area and distributed on a side close to the first crossbeam, and the first controller is connected to a portion of the battery components distributed in the first assembly area;

[0013] The second controller is located in the second assembly area and distributed on a side close to the second crossbeam, and the second controller is connected to another part of the battery components distributed in the second assembly area.

[0014] Optionally, the first longitudinal beam, the second longitudinal beam, the first transverse beam, the second transverse beam and the third transverse beam are all hollow through beams.

[0015] Optionally, the vehicle chassis further comprises: a first frame and a second frame connected to the chassis body;

[0016] The first frame is distributed on a side of the first beam away from the second beam, and the second frame is distributed on a side of the second beam away from the first beam.

[0017] Optionally, the two ends of the first longitudinal beam respectively have a first plug interface and a second plug interface; the first frame is detachably connected to one end of a pair of first longitudinal beams through the first plug interface; the second frame is detachably connected to the other end of a pair of first longitudinal beams through the second plug interface.

[0018] Optionally, the side wall of the first longitudinal beam has a plurality of first assembly holes communicating with the first plug interface, and a plurality of second assembly holes communicating with the second plug interface;

[0019] An arrangement direction of the plurality of first assembly holes and an arrangement direction of the plurality of second assembly holes are both parallel to an extension direction of the first longitudinal beam, and at least one first assembly hole among the plurality of first assembly holes is used to fix the first frame, and at least one second assembly hole among the plurality of second assembly holes is used to fix the second frame.

[0020] Optionally, the vehicle body chassis further includes: a reinforcing plate located in the buffer zone, and two sides of the reinforcing plate are respectively fixedly connected to the first longitudinal beam and the second longitudinal beam arranged adjacently.

[0021] Optionally, the vehicle body chassis further includes: an accessory connected to the battery component, wherein the accessory is fixed to the buffer zone.

[0022] In a second aspect, an embodiment of the present disclosure provides an electric vehicle, comprising a vehicle chassis as described above, and wheels and a vehicle body connected to the vehicle chassis.

[0023] The beneficial effects of the technical solution provided by the embodiment of the present application are:

[0024] By distributing multiple battery components in the assembly area formed by the first cross beam, the second cross beam and a pair of first longitudinal beams on the chassis body, that is, multiple battery components and the chassis body share the same height space, the height space of the entire vehicle occupied by the battery components is released, thereby improving the space utilization rate of the passenger compartment.

[0025] The space at the chassis body is relatively larger, where more battery components can be placed, and the battery components are distributed in the assembly area of ​​the chassis body. There is no need to consider the problem of shrinking the frame structure of the battery components to the inside of the second longitudinal beam of the body chassis in the width direction of the car. It can also further ensure the assembly quantity of battery components at the chassis body and effectively improve the space energy efficiency of the battery.

[0026] The battery components and the chassis structure are integrated to eliminate the frame structure of the battery components, reduce the number of parts in the chassis, reduce assembly, and improve manufacturing precision.

[0027] The chassis body can play a secondary anti-collision role for the battery components in the assembly area through the first longitudinal beam and the second longitudinal beam thereon, thereby improving the safety of the battery components. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 A schematic diagram of a three-dimensional structure of a chassis body provided in an embodiment of the present disclosure;

[0030] Figure 2 It is a schematic diagram of a three-dimensional structure of a vehicle chassis provided by an embodiment of the present disclosure;

[0031] Figure 3 It is a schematic diagram of a three-dimensional structure of a vehicle chassis provided by an embodiment of the present disclosure;

[0032] Figure 4 It is a schematic diagram of a vehicle chassis explosion structure provided by an embodiment of the present disclosure;

[0033] Figure 5 is a schematic diagram of a three-dimensional structure of a chassis body provided by an embodiment of the present disclosure;

[0034] Figure 6 is a schematic diagram of a three-dimensional structure of a chassis body provided by an embodiment of the present disclosure;

[0035] Figure 7 It is a schematic diagram of a vehicle chassis explosion structure provided in an embodiment of the present disclosure.

[0036] Description of reference numerals:

[0037] 10- chassis body;

[0038] 11-first longitudinal beam; 111-first plug interface;

[0039] 12- second longitudinal beam;

[0040] 13-first crossbeam; 131-first through hole; 132-first power connection port; 133-second power connection port;

[0041] 14-second cross beam; 15-third cross beam; 16-reinforcement plate; 17-bottom cover; 18-top cover;

[0042] 20-battery component; 30-first controller; 40-second controller;

[0043] 50-first frame; 51-front cross beam; 52-front longitudinal beam;

[0044] 60-second frame; 61-rear cross beam; 62-rear longitudinal beam;

[0045] 70-first guard plate; 80-second guard plate;

[0046] A-assembly area; A1-first assembly area; A2-second assembly area; B-buffer area;

[0047] V1-first assembly hole; V2-second assembly hole; V3-third assembly hole; V4-fourth assembly hole. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0049] The directional nouns involved in the disclosed embodiments, such as "upper", "lower", "side", etc., are generally based on the directions shown in the figures, and these directional nouns are used only to more clearly describe the relationship between structures, and are not intended to describe absolute directions.

[0050] Unless otherwise defined, all technical terms used in the embodiments of the present disclosure have the same meanings as commonly understood by those of ordinary skill in the art.

[0051] In order to make the technical solutions and advantages of the present disclosure more clear, the embodiments of the present disclosure will be further described in detail below with reference to the accompanying drawings.

[0052] In a first aspect, a vehicle chassis is provided. Figure 1-Figure 7 As shown, the vehicle chassis includes: a chassis body 10 and a plurality of battery components 20 .

[0053] The chassis body 10 includes a pair of first longitudinal beams 11, a pair of second longitudinal beams 12, a first cross beam 13 and a second cross beam 14. The pair of second longitudinal beams 12 are arranged on both sides of the pair of first longitudinal beams 11, the first cross beam 13 is fixedly connected to the same end of the first longitudinal beam 11 and the second longitudinal beam 12, and the second cross beam 14 is fixedly connected to the other ends of the first longitudinal beam 11 and the second longitudinal beam 12. The first cross beam 13, the second cross beam 14 and the pair of first longitudinal beams 11 enclose an assembly area A, and the first cross beam 13, the second cross beam 14, the first longitudinal beam 11 and the second longitudinal beam 12 enclose a buffer area B.

[0054] A plurality of battery components 20 are distributed in the assembly area A.

[0055] In the disclosed embodiment, by distributing a plurality of battery components 20 in the assembly area A formed by the first cross beam 13, the second cross beam 14 and a pair of first longitudinal beams 11 on the chassis body 10, that is, the plurality of battery components 20 and the chassis body 10 share the same height space, the height space of the whole vehicle occupied by the battery components 20 is released, and the space utilization rate of the passenger compartment is improved. The space at the chassis body 10 can be relatively larger, and more battery components 20 can be placed here. In addition, by distributing the battery components 20 in the assembly area A at the chassis body 10, there is no need to consider the problem of shrinking the frame structure of the battery components 20 inside the second longitudinal beam 12 of the chassis body in the width direction of the car, and the number of battery components 20 assembled at the chassis body 10 can be further guaranteed, effectively improving the space specific energy of the battery. The structure at the battery component 20 and the chassis body 10 are integrated, the frame structure of the battery component 20 is cancelled, the number of parts of the chassis body is reduced, the assembly is reduced, and the manufacturing precision is improved. The chassis body 10 can play a secondary anti-collision role for the battery component 20 in the assembly area A through the first longitudinal beam 11 and the second longitudinal beam 12 distributed at intervals thereon, thereby improving the safety of the battery component 20 .

[0056] Optionally, the chassis body 10 also includes: a third crossbeam 15 arranged between the first crossbeam 13 and the second crossbeam 14, the third crossbeam 15 is fixedly connected to the pair of first longitudinal beams 11 and the pair of second longitudinal beams 12, and the third crossbeam 15 is used to separate the assembly area A into a first assembly area A1 and a second assembly area A2.

[0057] Part of the battery components 20 among the plurality of battery components 20 are distributed in the first assembly area A1 , and another part of the battery components 20 among the plurality of battery components 20 are distributed in the second assembly area A2 .

[0058] The assembly area A formed on the chassis body 10 is divided into a first assembly area A1 and a second assembly area A2 distributed along the extension direction of the first longitudinal beam 11 by the third crossbeam 15 disposed between the first crossbeam 13 and the second crossbeam 14, and multiple battery components 20 can be arranged in zones through the first assembly area A1 and the second assembly area A2. In this way, some battery components 20 on the first assembly area A1 and another part of the battery components 20 on the second assembly area A2 can be connected to the motor on the vehicle nearby, which is convenient for the battery components 20 on the first assembly area A1 and the second assembly area A2 to draw power at the same time and to simplify the connection lines. In addition, multiple battery components 20 can be arranged in zones on the first assembly area A1 and the second assembly area A2 according to the requirements of the voltage platform, which is convenient for precise control and temperature management.

[0059] Figure 1 Schematic diagram of a three-dimensional structure of a chassis body 10 provided in an embodiment of the present disclosure. Figure 1As shown, the chassis body 10 forms a frame structure through a pair of first longitudinal beams 11 , a pair of second longitudinal beams 12 , a first cross beam 13 , a second cross beam 14 and a third cross beam 15 .

[0060] Specifically, the pair of first longitudinal beams 11 , the pair of second longitudinal beams 12 , the first cross beam 13 , the second cross beam 14 and the third cross beam 15 in the chassis body 10 may be connected by welding / riveting or the like to facilitate processing to form a frame structure.

[0061] Among them, the area of ​​the first assembly area A1 and the second assembly area A2 separated by the third beam 15 can be the same or different, and can be set according to actual needs. For example, the third beam 15 is relatively closer to the second beam 14, so that the area of ​​the first assembly area A1 is larger than the area of ​​the second assembly area A2.

[0062] Figure 2 It is a schematic diagram of a three-dimensional structure of a vehicle body chassis provided in an embodiment of the present disclosure.

[0063] Optional, such as Figure 2 As shown, the vehicle chassis further includes: a first controller 30 and a second controller 40 .

[0064] The first controller 30 is located in the first assembly area A1 and distributed on a side close to the first crossbeam 13 . The first controller 30 is connected to a portion of the battery components 20 distributed in the first assembly area A1 .

[0065] The second controller 40 is located in the second assembly area A2 and distributed on a side close to the second crossbeam 14 . The second controller 40 is connected to another part of the battery components 20 distributed in the second assembly area A2 .

[0066] The first controller 30 and the second controller 40 have the same function, which is to control the discharge of the battery component 20, monitor the temperature of the battery component 20, and control the cooling system to provide cooling water to the battery component 20.

[0067] The first controller 30 and the second controller 40 have the same advantages in their locations, and the first controller 30 is used as an example for explanation. The first controller 30 is arranged in the first assembly area A1, and the space at the chassis body 10 can be fully utilized. The first controller 30 is arranged in the first assembly area A1 close to the first crossbeam 13, so that part of the battery components 20 distributed in the first assembly area A1 are relatively located at the center of the chassis body 10 or close to the center, which is convenient for protecting the battery components 20 in the event of an accident, such as a collision accident.

[0068] The vehicle chassis also includes: a first inverter and a second inverter (as shown). The first inverter is located in the first assembly area A1 and is distributed on a side close to the first crossbeam 13. The first inverter is connected to a portion of the battery components 20 distributed in the first assembly area A1. The second inverter is located in the second assembly area A2 and is distributed on a side close to the second crossbeam 14. The second inverter is connected to another portion of the battery components 20 distributed in the second assembly area A2.

[0069] The first inverter and the second inverter have the same function, which is to drive the motor, adapt to different electrical equipment, improve efficiency and driving range, etc. The advantages of the first inverter and the second inverter are the same as the advantages of the first controller 30, so they are not repeated here.

[0070] Optionally, the first longitudinal beam 11 , the second longitudinal beam 12 , the first cross beam 13 , the second cross beam 14 and the third cross beam 15 are all hollow through beams. The hollow through beams can improve the strength so as to protect the multiple battery components 20 in the chassis body 10 .

[0071] Among them, the cross-sectional areas of the first longitudinal beam 11, the second longitudinal beam 12, the first cross beam 13, the second cross beam 14 and the third cross beam 15 can be consistent, so as to facilitate the splicing and processing of different chassis bodies 10 according to different vehicle models, and to carry out serial design and development of the chassis body 10 integrated with multiple battery components 20 to achieve 60-120kwh power change adjustment and adapt to the needs of different weight vehicle models.

[0072] The first longitudinal beam 11, the second longitudinal beam 12, the first cross beam 13, the second cross beam 14 and the third cross beam 15 can all be manufactured by a roll forming process, so that when the chassis body 10 is adjusted in length and / or width, it can be adjusted at any time as needed to reduce new development. The chassis body 10 can also adjust the thickness and model of the molding material according to the load conditions to achieve adaptive matching of different loads. It can be understood that the length direction of the body chassis corresponds to the length direction of the electric vehicle, and the width direction of the body chassis corresponds to the width direction of the electric vehicle.

[0073] Figure 3 It is a schematic diagram of a three-dimensional structure of a vehicle body chassis provided in an embodiment of the present disclosure.

[0074] Optional, such as Figure 3 As shown, the vehicle chassis further includes: a first frame 50 and a second frame 60 connected to the chassis body 10 .

[0075] The first frame 50 is distributed on a side of the first beam 13 away from the second beam 14 , and the second frame 60 is distributed on a side of the second beam 14 away from the first beam 13 .

[0076] When the electric vehicle adopts the chassis body 10 in the embodiment of the present disclosure, in the case of a side collision, the first longitudinal beam 11 and the second longitudinal beam 12 can play a secondary collision protection role for the battery, and in the case of a head-on collision, the first frame 50 or the second frame 60 can play a collision protection role for the battery. The first longitudinal beam 11, the second longitudinal beam 12, the first frame 50 and the second frame 60 cooperate to protect the battery component 20 from multiple angles, thereby improving the safety of the battery component 20.

[0077] Specifically, the first frame 50 corresponds to the frame at the front cabin of the electric vehicle, and the second frame 60 corresponds to the frame at the trunk of the electric vehicle.

[0078] Optionally, the first longitudinal beam 11 has a first plug interface 111 and a second plug interface at both ends. The first frame 50 is detachably connected to one end of a pair of first longitudinal beams 11 through the first plug interface 111, and the second frame 60 is detachably connected to the other end of the pair of first longitudinal beams 11 through the second plug interface to form a complete vehicle force-bearing structure.

[0079] In the related art, the first frame 50 and the second frame 60 are indirectly connected to the first longitudinal beam 11 through an intermediate member (such as a cross beam), which cannot transmit force well and is not very helpful in improving the strength of the first longitudinal beam 11.

[0080] In the vehicle chassis of the embodiment of the present disclosure, the first frame 50 is directly and detachably connected to one end of a pair of first longitudinal beams 11 through the first plug interface 111, and the second frame 60 is directly and detachably connected to the other end of the pair of first longitudinal beams 11 through the second plug interface. The first frame 50 and the second frame 60 are directly connected to the first longitudinal beam 11, which can effectively improve the strength of the first longitudinal beam 11, for example, improve the bending and compressive strength of the first longitudinal beam 11.

[0081] Specifically, Figure 2 As shown, a pair of first through holes 131 are provided on the first crossbeam 13, and the first through holes 131 correspond to the first plug interface 111 one by one, and the first through holes 131 and the first plug interface 111 are communicated with each other, so as to facilitate the plugging of the first frame 50 and the first longitudinal beam 11. The first crossbeam 13 is also provided with a first power connection port 132 and a second power connection port 133 located between the pair of first through holes 131, so as to facilitate the electrical connection between the battery component 20 and the motor in the first assembly area A1. A pair of second through holes are provided on the second crossbeam 14, and the second through holes and the second plug interface are corresponded to each other one by one, and the second through holes and the second plug interface are communicated with each other, so as to facilitate the plugging of the second frame 60 and the first longitudinal beam 11. A third power connection port and a fourth power connection port are also provided on the second crossbeam 14, so as to facilitate the electrical connection between the battery component 20 and the motor in the second assembly area A2. Among them, the second plug interface of the first crossbeam 11 and the second through holes, the third power connection port and the fourth power connection port on the second crossbeam 14 are due to Figure 2 Cannot be shown due to viewing angle.

[0082] Figure 4 It is a schematic diagram of a vehicle chassis explosion structure provided in an embodiment of the present disclosure.

[0083] Optional, such as Figure 4 As shown, the side wall of the first longitudinal beam 11 has a plurality of first assembly holes V1 communicating with the first plug-in port 111 , and a plurality of second assembly holes V2 communicating with the second plug-in port.

[0084] The arrangement direction of the multiple first assembly holes V1 and the arrangement direction of the multiple second assembly holes V2 are both parallel to the extension direction of the first longitudinal beam 11, and at least one first assembly hole V1 among the multiple first assembly holes V1 is used to fix the first frame 50, and at least one second assembly hole V2 among the multiple second assembly holes V2 is used to fix the second frame 60.

[0085] The insertion length between the first frame 50 and the first longitudinal beam 11 can be flexibly adjusted through the plurality of first assembly holes V1. The insertion length between the second frame 60 and the first longitudinal beam 11 can be flexibly adjusted through the plurality of second assembly holes V2.

[0086] The vehicle chassis in the disclosed embodiment can provide a larger installation space for multiple battery components 20 through the chassis body 10, which is convenient for flexibly selecting the number of battery components 20 to be installed according to needs, thereby improving the versatility of the vehicle chassis and facilitating adaptation to vehicle models with different power requirements. The versatility of the vehicle chassis in the length direction can be increased by setting multiple first assembly holes V1 and multiple second assembly holes V2. The first frame 50 and the second frame 60 are both detachably connected to the first longitudinal beam 11, which can also increase the versatility of the vehicle chassis. For example, when a different chassis body 10 needs to be replaced, the original first frame 50 and the second frame 60 can continue to be used.

[0087] Specifically, Figure 4 As shown, the first frame 50 includes a pair of front longitudinal beams 52 and a front cross beam 51, and the two ends of the front cross beam 51 are respectively fixedly connected to the adjacent pair of front longitudinal beams 52. The number of the front cross beams 51 can be one, two, three, etc., which can be set according to actual needs. The second frame 60 includes a pair of rear longitudinal beams 62 and a rear cross beam 61, and the two ends of the rear cross beam 61 are respectively fixedly connected to the adjacent pair of rear longitudinal beams 62. The number of the rear cross beams 61 can be one, two, three, etc., which can be set according to actual needs.

[0088] A section of the front longitudinal beam 52 close to the first cross beam 13 is provided with a plurality of third assembly holes V3, which are arranged along the extension direction of the front longitudinal beam 52. Bolts and nuts are passed through the corresponding first assembly holes V1 and third assembly holes V3 to detachably connect the first frame 50 and the first longitudinal beam 11. A section of the rear longitudinal beam 62 close to the second cross beam 14 is provided with a plurality of fourth assembly holes V4, which are arranged along the extension direction of the rear longitudinal beam 62. Bolts and nuts are passed through the corresponding second assembly holes V2 and fourth assembly holes V4 to detachably connect the second frame 60 and the first longitudinal beam 11. For example, the front longitudinal beam 52 and the rear longitudinal beam 62 are both detachably connected to the first longitudinal beam 11 through three sets of bolts and nuts.

[0089] Optionally, the vehicle chassis further includes: an accessory connected to the battery component 20, and the accessory is fixed to the buffer zone B. The accessory is a structure corresponding to the battery component 20, such as a cooling system, a monitoring device, etc. Placing the accessory in the buffer zone B facilitates full use of the space on the vehicle chassis and improves the space utilization rate of the vehicle chassis.

[0090] Optionally, the vehicle chassis further includes: a reinforcing plate 16 located in the buffer zone B, and the two sides of the reinforcing plate 16 are respectively fixedly connected to the adjacently arranged first longitudinal beam 11 and the second longitudinal beam 12. The reinforcing plate 16 can support the space in the buffer zone B and strengthen the overall strength of the vehicle chassis. When the electric vehicle using the vehicle chassis encounters a side collision, the reinforcing plate 16 can support the connected second longitudinal beam 12 to prevent the second longitudinal beam 12 from approaching the first longitudinal beam 11 or reduce the deformation degree of the second longitudinal beam 12, so as to better protect the multiple battery components 20 in the assembly area A.

[0091] Figure 5 1 is a schematic diagram of a three-dimensional structure of a chassis body 10 provided in an embodiment of the present disclosure. Figure 5 As shown, the reinforcing plate 16 is perpendicular to the first longitudinal beam 11 and the second longitudinal beam 12. One or more reinforcing plates 16 distributed in parallel can be arranged in the buffer zone B. The more reinforcing plates 16 there are, the more the strength of the vehicle chassis is improved. However, the space of the buffer zone B will be compressed, and the space of the buffer zone B where accessories can be installed will be reduced. Based on this, the number of reinforcing plates 16 can be flexibly set according to actual needs.

[0092] Figure 6 1 is another schematic diagram of the three-dimensional structure of the chassis body 10 provided in the embodiment of the present disclosure. Figure 6As shown, the reinforcing plate 16 is obliquely arranged between the first longitudinal beam 11 and the second longitudinal beam 12. For example, the reinforcing plates 16 are fixed near the first cross beam 13, near the second cross beam 14, and on both sides of the third cross beam 15 in the extending direction of the first longitudinal beam 11. In this way, the reinforcing plates 16 can form a triangular structure with the surrounding beams to improve the strength of the chassis body 10, and can also ensure the effective assembly space of the accessories at the buffer zone B as much as possible.

[0093] Figure 7 It is a schematic diagram of a vehicle chassis explosion structure provided in an embodiment of the present disclosure.

[0094] like Figure 7 As shown, the chassis body 10 also includes a bottom cover 17 and a top cover 18. A pair of second longitudinal beams 12, a first cross beam 13 and a second cross beam 14 in the chassis body 10 form an outer frame structure, the bottom cover 17 is sealed and fixed to the bottom of the outer frame structure, and the top cover 18 is sealed and fixed to the top of the outer frame structure. The bottom cover 17 and the top cover 18 can also be integrally formed with the outer frame structure through welding, stamping and other processes. A plurality of battery components 20 are fixed in the assembly area A between the bottom cover 17 and the top cover 18, and the battery components 20 can be glued and fixed to the bottom cover 17, or fixed to the bottom cover 17 by a structure such as a slide rail.

[0095] like Figure 7 As shown, the vehicle body also includes a first guard plate 70 and a second guard plate 80. The first guard plate 70 is located on the side of the bottom cover 17 away from the top cover 18. The first guard plate 70 is fixedly connected to the outer frame structure by screwing / riveting / welding, etc. The first guard plate 70 is made of scratch-resistant plastic, aluminum alloy, etc. The second guard plate 80 is located on the side of the top cover 18 away from the bottom cover 17. The top cover 18 is a load-bearing structure, for example, the top cover 18 is a sheet metal part.

[0096] In summary, the vehicle chassis in the embodiment of the present disclosure integrates the battery component 20 and the chassis body 10, cancels the traditional battery pack, and realizes the integration of the transverse and longitudinal beams of the vehicle chassis and the transverse and longitudinal beams of the battery, thereby reducing the number of components of the power battery pack and the vehicle body, reducing the weight of the assembly, and improving the safety protection capability and manufacturing accuracy. At the same time, the use of assembly processes and assembly accessories is reduced, the assembly hours are reduced, the assembly deviation and production line pressure of the production line are reduced, and the arrangement of serialized products is facilitated. The entire vehicle chassis is made into a series of products to effectively improve the commonality rate of components of various models, shorten the development cycle of platform projects, reduce development costs, and reduce the cost of a single vehicle. After the battery component 20 is integrated on the chassis body 10, the space occupied by the vehicle chassis in height can be released, and the space utilization rate of the passenger compartment can be improved. The first controller 30 and the second controller 40 connected to the battery component 20 are arranged in the assembly area A, and the accessories corresponding to the battery component 20 are arranged in the buffer zone B, making full use of the space at the chassis body 10. The first longitudinal beam 11 and the second longitudinal beam 12 can play a secondary anti-collision role and can effectively protect multiple battery components 20 on the vehicle chassis. The reinforcement plate 16 of the buffer zone B can further improve the strength of the chassis body 10 to protect the battery component 20 installed thereon. The first frame 50 and the second frame 60 are directly and detachably connected to the first longitudinal beam 11, which can improve the versatility of the vehicle chassis and strengthen the strength of the chassis body 10.

[0097] In a second aspect, an embodiment of the present disclosure provides an electric vehicle, comprising a vehicle chassis as described above, and wheels and a vehicle body connected to the vehicle chassis.

[0098] Since the battery component 20 is integrated on the vehicle chassis, the vehicle chassis and the battery component 20 can share a set of transverse and longitudinal beams, effectively releasing the space occupied by the vehicle chassis in height, improving the space utilization rate of the passenger compartment, and facilitating the human-machine layout and space layout of the passenger car.

[0099] In the present application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The term "plurality" refers to two or more than two, unless otherwise clearly defined.

[0100] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the present disclosure disclosed herein. The present disclosure is intended to cover any variations, uses or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The description and examples are intended to be exemplary only.

[0101] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A vehicle chassis, characterized in that: include: A chassis body (10) and a plurality of battery components (20); The chassis body (10) comprises a pair of first longitudinal beams (11), a pair of second longitudinal beams (12), a first cross beam (13) and a second cross beam (14); the pair of second longitudinal beams (12) are arranged on both sides of the pair of first longitudinal beams (11); the first cross beam (13) is fixedly connected to the same end of the first longitudinal beam (11) and the second longitudinal beam (12); the second cross beam (14) is fixedly connected to the other ends of the first longitudinal beam (11) and the second longitudinal beam (12); the first cross beam (13), the second cross beam (14) and the pair of first longitudinal beams (11) form an assembly area (A); the first cross beam (13), the second cross beam (14), the first longitudinal beam (11) and the second longitudinal beam (12) form a buffer area (B); The plurality of battery components (20) are distributed in the assembly area (A).

2. The vehicle chassis according to claim 1, characterized in that: The chassis body (10) further comprises: a third crossbeam (15) disposed between the first crossbeam (13) and the second crossbeam (14), the third crossbeam (15) being fixedly connected to the pair of first longitudinal beams (11) and the pair of second longitudinal beams (12), and the third crossbeam (15) being used to separate the assembly area (A) into a first assembly area (A1) and a second assembly area (A2); Part of the battery components (20) among the plurality of battery components (20) are distributed in the first assembly area (A1), and another part of the battery components (20) among the plurality of battery components (20) are distributed in the second assembly area (A2).

3. The vehicle chassis according to claim 2, characterized in that: The vehicle chassis further comprises: a first controller (30) and a second controller (40); The first controller (30) is located in the first assembly area (A1) and is distributed on a side close to the first crossbeam (13), and the first controller (30) is connected to a portion of the battery components (20) distributed in the first assembly area (A1); The second controller (40) is located in the second assembly area (A2) and distributed on a side close to the second crossbeam (14). The second controller (40) is connected to another part of the battery components (20) distributed in the second assembly area (A2).

4. The vehicle chassis according to claim 2, characterized in that: The first longitudinal beam (11), the second longitudinal beam (12), the first cross beam (13), the second cross beam (14) and the third cross beam (15) are all hollow through beams.

5. The vehicle chassis according to any one of claims 1 to 4, characterized in that: The vehicle chassis further comprises: a first frame (50) and a second frame (60) connected to the chassis body (10); The first frame (50) is distributed on a side of the first beam (13) away from the second beam (14), and the second frame (60) is distributed on a side of the second beam (14) away from the first beam (13).

6. The vehicle chassis according to claim 5, characterized in that: The first longitudinal beam (11) has a first plug interface (111) and a second plug interface at both ends thereof; the first frame (50) is detachably connected to one end of a pair of the first longitudinal beams (11) via the first plug interface (111); and the second frame (60) is detachably connected to the other end of a pair of the first longitudinal beams (11) via the second plug interface.

7. The vehicle chassis according to claim 6, characterized in that: The side wall of the first longitudinal beam (11) has a plurality of first assembly holes (V1) communicating with the first plug interface (111), and a plurality of second assembly holes (V2) communicating with the second plug interface; An arrangement direction of the plurality of first assembly holes (V1) and an arrangement direction of the plurality of second assembly holes (V2) are both parallel to an extension direction of the first longitudinal beam (11), and at least one first assembly hole (V1) among the plurality of first assembly holes (V1) is used to fix the first frame (50), and at least one second assembly hole (V2) among the plurality of second assembly holes (V2) is used to fix the second frame (60).

8. The vehicle chassis according to claim 1, characterized in that: The vehicle body chassis further comprises: a reinforcing plate (16) located in the buffer zone (B), and two sides of the reinforcing plate (16) are respectively fixedly connected to the first longitudinal beam (11) and the second longitudinal beam (12) arranged adjacently.

9. The vehicle chassis according to any one of claims 1 to 4 and 6 to 8, characterized in that: The vehicle chassis further comprises: an accessory connected to the battery component (20), wherein the accessory is fixed to the buffer zone (B).

10. An electric vehicle, characterized in that: It comprises a vehicle body chassis as claimed in any one of claims 1 to 9, and wheels and a vehicle body connected to the vehicle body chassis.

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