WO2024017041A1 - 一种前围板下横梁结构及汽车 - Google Patents

一种前围板下横梁结构及汽车 Download PDF

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Publication number
WO2024017041A1
WO2024017041A1 PCT/CN2023/105305 CN2023105305W WO2024017041A1 WO 2024017041 A1 WO2024017041 A1 WO 2024017041A1 CN 2023105305 W CN2023105305 W CN 2023105305W WO 2024017041 A1 WO2024017041 A1 WO 2024017041A1
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WO
WIPO (PCT)
Prior art keywords
layer
connecting section
cross member
cross
connecting plate
Prior art date
Application number
PCT/CN2023/105305
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English (en)
French (fr)
Inventor
李刚
贠涛
周中彪
侯春生
张哲�
黄博
袁东
韩建永
曹卫林
江明龙
Original Assignee
岚图汽车科技有限公司
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Application filed by 岚图汽车科技有限公司 filed Critical 岚图汽车科技有限公司
Publication of WO2024017041A1 publication Critical patent/WO2024017041A1/zh

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Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/66—Arrangements of batteries
    • 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
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
    • B60K2001/0405—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion characterised by their position

Definitions

  • the present disclosure relates to the technical field of vehicle body structures, and in particular to a cowl lower cross member structure and an automobile.
  • new energy vehicles have batteries arranged in the lower part of the floor, so they are different from the body structure of traditional fuel vehicles. Since new energy vehicles can only extend the front and rear longitudinal beams to the front end of the battery pack, when the body of the new energy vehicle is hit by a frontal collision, most of the energy transmitted by the impact will be transferred to the battery pack of the new energy vehicle, thus causing the new energy vehicle to The battery packs of energy vehicles have been greatly impacted. Since the span between the left longitudinal beam and the right longitudinal beam of the new energy vehicle frame is large, a simple arrangement of the integrated crossbeam is likely to bend, resulting in a direct bending of the integrated crossbeam that may compress the battery pack. , causing the battery pack to be impacted. The battery pack after impact poses a great threat to the driver and passengers.
  • the present disclosure provides a cowl lower beam structure and a car to solve the problem that the battery pack in the prior art poses a great safety hazard when a frontal collision occurs at the front of the vehicle body.
  • a cowl lower cross-beam structure which includes a first cross-beam layer and a second cross-beam layer, wherein: the first cross-beam layer includes a first connecting plate, a second connecting plate, and a second cross-beam layer connected in sequence. A connecting plate and a third connecting plate. The end of the first connecting plate far away from the second connecting plate is used for fixed connection with the left longitudinal beam of the vehicle frame.
  • the end of the third connecting plate far away from the second connecting plate It is used for fixed connection with the right longitudinal beam, and a first connecting section and a second connecting section are respectively provided between the second connecting plate, the first connecting plate and the third connecting plate; the second cross beam
  • the first cross-beam layer is stacked and a cavity is formed between the first cross-beam layer and the second cross-beam layer.
  • the second cross-beam layer includes a connected first reinforcing plate and a second reinforcing plate.
  • the first reinforcing plate A third connecting section is provided between the second reinforcing plate and the third connecting section, and the projection of the third connecting section on the first beam layer is offset from the first connecting section and the second connecting section;
  • the projection of the third connecting section on the first beam layer is located between the first connecting section and the second connecting section; the first connecting section, the second connecting section and the third connecting section.
  • an automobile which includes a battery pack, a left longitudinal beam and a right longitudinal beam of a vehicle frame, and the above-mentioned dash panel lower cross member structure, the first cross member layer and the second second cross member layer.
  • the cross-beam layer is fixedly provided between the left longitudinal beam and the right longitudinal beam of the vehicle frame, and the battery pack is fixedly provided on the side of the front apron lower cross-beam structure away from the front of the vehicle.
  • Figure 1 is a structural exploded view of a cowl lower cross member structure according to some embodiments of the present disclosure
  • Figure 2 is a schematic structural diagram of one side of the first cross-beam layer of the cowl lower cross-beam structure according to some embodiments of the present disclosure.
  • FIG. 3 is a cross-sectional view taken along section line A-A in FIG. 2 .
  • Figure 1 is a structural exploded view of a cowl lower cross-beam structure provided according to some embodiments of the present disclosure
  • Figure 2 is a structural schematic diagram of the first cross-beam layer side of the cowl lower cross-beam structure provided according to some embodiments of the present disclosure
  • Figure 3 is a cross-sectional view taken along the section line A-A in FIG. 2 .
  • a cowl lower cross member structure is provided, which includes a first cross member layer 1 and a second cross member layer 2 .
  • the first cross beam layer 1 includes a first connecting plate 11, a second connecting plate 12 and a third connecting plate 13 connected in sequence.
  • One end of the first connecting plate 11 away from the second connecting plate 12 is used for fixed connection with the left longitudinal beam of the vehicle frame.
  • One end of the third connecting plate 13 away from the second connecting plate 12 is used to be fixedly connected to the right longitudinal beam, and the second connecting plate 12 is connected to the first connecting plate 11 and the third connecting plate 13
  • a first connecting section 14 and a second connecting section 15 are respectively provided therebetween.
  • the first connecting plate 11 and the second connecting plate 12 can be fixedly connected to the left longitudinal beam and/or the right longitudinal beam of the vehicle frame by welding respectively.
  • the second beam layer 2 is provided on one side of the first beam layer 1 and forms a cavity with the first beam layer 1 .
  • the second crossbeam layer 2 includes a first reinforcing plate 21 and a second reinforcing plate 22 that are connected.
  • a third connecting section 23 is provided between the first reinforcing plate 21 and the second reinforcing plate 22, and the first connecting section 14, the second connecting section 15 and the third connecting section 23 are in The projections on the first beam layer 1 are located at different positions.
  • the cowl panel lower cross-beam structure located between the left longitudinal beam and the right longitudinal beam of the vehicle frame includes a first cross-beam layer 1 and a second cross-beam layer 2.
  • the first cross-beam Layer 1 includes a first connecting plate 11, a second connecting plate 12 and a third connecting plate 13 connected in sequence.
  • the second connecting plate 12, the first connecting plate 11 and the third connecting plate 13 are respectively provided with first connecting plates.
  • the connecting section 14, the second connecting section 15, the second crossbeam layer 2 is provided on one side of the first crossbeam layer 1, and forms a cavity with the first crossbeam layer 1, the second crossbeam layer 2 includes a connected first
  • a third connecting section 23 is provided between the reinforcing plate 21 and the second reinforcing plate 22.
  • the first reinforcing plate 21 and the second reinforcing plate 22 are provided with a third connecting section 23.
  • the impact force is transmitted to the lower cross-beam structure of the front cowl through the left and right longitudinal beams of the frame, and through the first connection section 14 and the second connection
  • the section 15 and the third connecting section 23 form a collapse deformation guide for the cavity between the first beam layer 1 and the second beam layer 2 and the first beam layer 1 and the second beam layer 2, that is, in the first beam layer
  • deformation will begin from the first connecting section 14, the second connecting section 15 and the third connecting section 23, and through the deformation of the first beam layer 1 and the second beam layer 2 , and the deformation space provided by the cavity between the first crossbeam layer 1 and the second crossbeam layer 2 protects the battery pack, because the first connection section 14, the second connection section 15 and the third connection section 23 are in the first crossbeam layer.
  • the projections on 1 are located at different positions, which avoids rapid deformation of the first beam layer 1 and the second beam layer 2 at the same position, improves the energy absorption performance of the cavity formed by the first beam layer 1 and the second beam layer 2, and is beneficial to The lower beam structure of the cowl resists body deformation in the direction of impact, improving the safety of the battery pack and body.
  • the projection of the third connecting section 23 on the first beam layer 1 is located between the first connecting section 14 and the second connecting section 15 , that is to say, when the first beam When the layer 1 and the second beam layer 2 are to be deformed, they all start to deform from the first connecting section 14, the second connecting section 15 and the third connecting section 23, and the first connecting section 14, the second connecting section 15 and the third connecting section 23 are deformed.
  • the third connecting section 23 serves as a guide point for deformation. In the width direction of the vehicle body, the first connecting section 14, the second connecting section 15 and the third connecting section 23 are staggeredly arranged.
  • the deformation point of the first connecting section 14 is in contact with the first reinforcing plate. 21, the deformation point of the second connecting section 15 corresponds to the second reinforcing plate 22, and the deformation point of the third connecting section 23 corresponds to the second connecting plate 12, thereby improving the energy absorption capacity during the overall deformation process.
  • first connecting section 14 and the second connecting section 15 are arranged parallel to each other, so that the first The length extension direction of the connecting section 14 and the second connecting section 15 is consistent with the collision direction of the vehicle body, so as to better resist deformation.
  • the projections of the first connecting section 14 , the second connecting section 15 and the third connecting section 23 on the first beam layer 1 are parallel to each other, further maintaining the first beam layer 1 and the second cross beam layer 2 are consistent at their respective connections to avoid conflicts between the first connecting plate 11, the second connecting plate 12 and the third connecting plate 13 or the first reinforcing plate 21 and the second reinforcing plate 22. , leading to the destruction of the deformation and collapse directions of the first beam layer 1 and the second beam layer 2, thereby improving the deformation controllability.
  • a plurality of positioning posts 3 are provided between the first crossbeam layer 1 and the second crossbeam layer 2.
  • a mounting position is provided in the center of the positioning posts 3.
  • the positioning posts 3 are respectively located on the first crossbeam.
  • the layer 1 and the second beam layer 2 are fixedly connected to facilitate the fixation between the first beam layer 1 and the second beam layer 2, and to maintain the cavity of the first beam layer 1 and the second beam layer 2 to have a certain resistance to deformation. ability.
  • the battery pack since there is a cavity between the first beam layer 1 and the second beam layer 2, when the battery pack needs to be installed, if the battery pack is not connected to the first beam layer 1 or the second beam layer 2 , between the left and right longitudinal beams of a larger-span frame, there is no fixed point for the battery pack, and the installation stability of the battery pack will be greatly reduced.
  • the battery pack is directly installed on the first crossbeam layer 1 Or on the second crossbeam layer 2, and because of the overall volume, weight and other factors of the battery pack, it will directly cause the first crossbeam layer 1 or the second crossbeam layer 2 to deform.
  • the positioning post 3 is used as the installation position of the battery pack in this area. , can improve the overall stability of the battery pack.
  • the multiple installation points of the battery pack and the connection points with other parts of the car body make the overall modal shape of the car body more stable through the installation of the battery pack, which further improves the strength of the car body. Ensure driving safety.
  • the end of the positioning post 3 away from the battery pack can be fixedly connected to the body of the vehicle body and fixed through pre-assembly, regardless of whether the battery pack is fixed to the positioning post 3 , the stable positional relationship between the first cross member layer 1 or the second cross member layer 2 and the vehicle body can be maintained.
  • the first cross-beam layer 1 has a bend along a cross-section parallel to the direction of the first connecting section 14 , and the first cross-beam layer 1 is provided with a bend in the cross-section to improve the first cross-beam layer 1
  • the overall structural stability increases the bending resistance of the first beam layer 1.
  • one edge of the second beam layer 2 extends to the first beam layer 1 and is fixedly connected to the first beam layer 1 to improve the height of the first beam layer 1 and the second beam layer.
  • the connection area between layers 2 improves relative stability.
  • first connecting section 14 , the second connecting section 15 and the third connecting section 23 are respectively welded sections, which improves processing efficiency and connection stability.
  • the second beam layer 2 is provided with reinforcing grooves 4 extending in different directions to improve the overall structural stability of the second beam layer 2 and increase the bending resistance of the second beam layer 2 .
  • a car including a battery pack, left and right longitudinal beams of the frame, and the above-mentioned cowl lower cross member structure.
  • the first cross-beam layer 1 and the second cross-beam layer 2 are fixedly arranged between the left longitudinal beam and the right longitudinal beam of the vehicle frame.
  • the battery pack is fixed on the side of the lower cross member structure of the cowl away from the front of the vehicle.
  • the structure, connection relationship, installation location, etc. of other devices can refer to the relevant disclosures of the prior art, which are not discussed here. Make expansion instructions.
  • the dash panel lower cross beam structure in the present disclosure is provided between the left longitudinal beam and the right longitudinal beam of the vehicle frame, and the dash panel lower beam structure includes a first beam layer and the second cross beam layer.
  • the first cross beam layer includes a first connecting plate, a second connecting plate and a third connecting plate that are connected in sequence.
  • the second connecting plate is respectively provided with the first connecting plate and the third connecting plate.
  • the second beam layer is located on one side of the first beam layer and forms a cavity with the first beam layer.
  • the second beam layer includes a connected first reinforcing plate and The second reinforcing plate has a third connecting section between the first reinforcing plate and the second reinforcing plate.
  • the collapse deformation guidance of the cavity between the first beam layer and the second beam layer and the first beam layer and the second beam layer that is, After the first beam layer and the second beam layer absorb energy, deformation will begin from the first connecting section, the second connecting section and the third connecting section, and through the deformation of the first beam layer and the second beam layer, and the third
  • the deformation space provided by the cavity between the first crossbeam layer and the second crossbeam layer protects the battery pack.
  • first connection section Since the projections of the first connection section, the second connection section and the third connection section on the first crossbeam layer are located at different positions, avoid This prevents the rapid deformation of the first crossbeam layer and the second crossbeam layer at the same position, improves the energy absorption performance of the cavity formed by the first crossbeam layer and the second crossbeam layer, and helps the dash panel lower crossbeam structure resist vehicle body deformation in the impact direction. , improve the safety of battery pack and car body.
  • first, second, etc. are only used to differentiate descriptions and cannot be understood as indicating or implying relative importance. Although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one unit from another. For example, a first unit may be referred to as a second unit, and similarly a second unit may be referred to as a first unit, without departing from the scope of example embodiments of the present disclosure.
  • the orientation or positional relationship indicated by the terms “upper”, “vertical”, “inner”, “outer”, etc. is the orientation or positional relationship in which the disclosed product is customarily placed during use.
  • the orientation or positional relationship commonly understood by those skilled in the art which is only to facilitate the description of the present disclosure and simplify the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, Therefore, it is not to be construed as a limitation on the present disclosure.
  • the terms "setting”, “installation” and “connection” should be understood in a broad sense.
  • it can be a fixed connection or a removable connection.
  • Detachable connection, or integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be an internal connection between two components.
  • the specific meanings of the above terms in this disclosure can be understood on a case-by-case basis.

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
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  • Body Structure For Vehicles (AREA)

Abstract

一种前围板下横梁结构及汽车，前围板下横梁结构包括第一横梁层(1)和第二横梁层(2)，第二横梁层(2)设于第一横梁层(1)的一侧，且与第一横梁层(1)之间形成空腔，当车头受到正面撞击时，撞击力通过车架的左纵梁与右纵梁向前围板下横梁结构传递，在第一横梁层(1)和第二横梁层(2)吸能后，会从第一连接段(14)、第二连接段(15)和第三连接段(23)处开始出现变形，并通过第一横梁层(1)和第二横梁层(2)的变形，以及第一横梁层(1)和第二横梁层(2)之间空腔提供的变形空间对电池包进行保护。

Description

一种前围板下横梁结构及汽车
相关申请的交叉引用
本申请要求于2022年07月20日提交的申请号为202210861236.9的中国专利申请的优先权，其全部内容通过引用并入本文。
技术领域
本公开涉及车身结构技术领域，特别涉及一种前围板下横梁结构及汽车。
背景技术
目前，在汽车的车身结构中，新能源汽车由于地板下部中要布置电池，因此与传统燃油车的车身结构不同。由于新能源汽车只能将前后贯穿的纵梁延伸至电池包的前端，因此新能源汽车的车身受到正面碰撞时，撞击传递的能量的大部分会传递至新能源汽车的电池包，因而使新能源汽车的电池包受到较大的冲击。由于新能源汽车的车架的左纵梁与右纵梁之间的跨度较大，简单布置一体式横梁很有可能出现弯折情况，进而导致直接折弯的一体式横梁很有可能压迫电池包，从而使得电池包受到撞击。受到撞击后的电池包对驾乘人员造成很大的威胁。
发明内容
针对现有技术中存在的缺陷，本公开提供一种前围板下横梁结构及汽车，以解决现有技术中的电池包在车身前部发生正面碰撞时存在较大安全隐患的问题。
依据本公开的第一方面，提供了一种前围板下横梁结构，其包括第一横梁层和第二横梁层，其中：所述第一横梁层包括依次连接的第一连接板、第二连接板和第三连接板，所述第一连接板远离所述第二连接板的一端用于与车架的左纵梁固定连接，所述第三连接板远离所述第二连接板的一端用于与右纵梁固定连接，且所述第二连接板与所述第一连接板、所述第三连接板之间分别设有第一连接段、第二连接段；所述第二横梁层叠置于所述第一横梁层，且与所述第一横梁层之间形成空腔，所述第二横梁层包括相连接的第一加强板和第二加强板，所述第一加强板和所述第二加强板之间设有第三连接段，且所述第三连接段在所述第一横梁层上的投影与所述第一连接段、所述第二连接段错位设置；所述第三连接段在所述第一横梁层的投影位于所述第一连接段和所述第二连接段之间；所述第一连接段、所述第二连接段和所述第三连接段在所述第一横梁层上的投影分别平行。
依据本公开第二方面，还提供一种汽车，其包括电池包、车架左纵梁和右纵梁，以及如上述的前围板下横梁结构，所述第一横梁层和所述第二横梁层固定设在车架的所述左纵梁与所述右纵梁之间，所述电池包固定设在所述前围板下横梁结构远离车头的一侧。
附图说明
为了更清楚地说明本公开实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单的介绍。显而易见地，下面描述中的附图仅仅是本公开的一些实施例，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，还可以根据这些附图获得其他的附图。
图1为依据本公开一些实施例的前围板下横梁结构的结构爆炸图；
图2为依据本公开一些实施例的前围板下横梁结构第一横梁层一侧的结构示意图；以及
图3为沿图2中剖面线A-A截取的剖视图。
附图标记：1、第一横梁层；11、第一连接板；12、第二连接板；13、第三连接板；14、 第一连接段；15、第二连接段；2、第二横梁层；21、第一加强板；22、第二加强板；23、第三连接段；3、定位柱；4、加强凹槽。
具体实施方式
下面结合附图及具体实施例对本公开作进一步阐述。在此需要说明的是，对于这些实施例方式的说明用于帮助理解本公开，但并不构成对本公开的限定。本文公开的特定结构和功能细节仅用于描述本公开的示例实施例。然而，可用很多备选的形式来体现本公开，并且不应当理解为本公开限制在本文阐述的实施例中。
图1为依据本公开一些实施例提供的前围板下横梁结构的结构爆炸图；图2为依据本公开一些实施例提供的前围板下横梁结构第一横梁层一侧的结构示意图；图3为沿附图2中剖面线A-A截取的剖视图。如图1至图3所示，依据本公开第一方面提供了一种前围板下横梁结构，其包括第一横梁层1和第二横梁层2。所述第一横梁层1包括依次连接的第一连接板11、第二连接板12和第三连接板13。所述第一连接板11远离所述第二连接板12的一端用于与车架的左纵梁固定连接。所述第三连接板13远离所述第二连接板12的一端用于与右纵梁固定连接，且所述第二连接板12与所述第一连接板11、所述第三连接板13之间分别设有第一连接段14、第二连接段15。
根据车架整体的实际加工布置，可以将第一连接板11和第二连接板12分别以焊接的方式与车架的左纵梁和/或右纵梁固定连接。
所述第二横梁层2设于所述第一横梁层1的一侧，且与所述第一横梁层1之间形成空腔。所述第二横梁层2包括相连接的第一加强板21和第二加强板22。所述第一加强板21和所述第二加强板22之间设有第三连接段23，且所述第一连接段14、所述第二连接段15和所述第三连接段23在所述第一横梁层1上的投影位于不同位置。
根据本公开一些实施例的技术方案工作原理是：设在车架左纵梁与右纵梁之间的前围板下横梁结构，包括第一横梁层1和第二横梁层2，第一横梁层1包括依次连接的第一连接板11、第二连接板12和第三连接板13，第二连接板12与第一连接板11、所述第三连接板13之间分别设有第一连接段14、第二连接段15，第二横梁层2设于第一横梁层1的一侧，且与第一横梁层1之间形成空腔，第二横梁层2包括相连接的第一加强板21和第二加强板22，第一加强板21和第二加强板22之间设有第三连接段23，在该前围板下横梁结构安装在车架上之后，电池包装设在前围板下横梁结构远离车头的一侧，当车头受到正面撞击时，撞击力通过车架的左纵梁与右纵梁向前围板下横梁结构传递，并通过第一连接段14、第二连接段15和第三连接段23形成对第一横梁层1和第二横梁层2以及第一横梁层1和第二横梁层2之间空腔的溃缩变形引导，也就是在第一横梁层1和第二横梁层2吸能后，会从第一连接段14、第二连接段15和第三连接段23处开始出现变形，并通过第一横梁层1和第二横梁层2的变形，以及第一横梁层1和第二横梁层2之间空腔提供的变形空间对电池包进行保护，由于第一连接段14、第二连接段15和第三连接段23在第一横梁层1上的投影位于不同位置，避免了第一横梁层1和第二横梁层2在相同位置出现快速变形，提高第一横梁层1和第二横梁层2形成的腔体的吸能性能，利于前围板下横梁结构在撞击方向上抵抗车身变形，提高电池包及车身安全。
在一些实施例中，所述第三连接段23在所述第一横梁层1的投影位于所述第一连接段14和所述第二连接段15之间，也就是说，当第一横梁层1和第二横梁层2要发生变形时，都是从第一连接段14、第二连接段15和第三连接段23处开始变形，且第一连接段14、第二连接段15和第三连接段23作为变形的引导点，在车身的宽度方向，第一连接段14、第二连接段15和第三连接段23错落布置，第一连接段14的变形处与第一加强板21相对应，第二连接段15的变形处与第二加强板22相对应，第三连接段23的变形处与第二连接板12相对应，提高整体变形过程中的吸能能力。
在一些实施例中，所述第一连接段14与所述第二连接段15相互平行设置，使得第一 连接段14与第二连接段15的长度延伸方向与车身撞击方向一致，更好的抵抗变形。
在一些实施例中，所述第一连接段14、所述第二连接段15和所述第三连接段23在所述第一横梁层1上的投影互相平行，进一步保持第一横梁层1和第二横梁层2在各自的连接处具备一致性，避免第一连接板11、第二连接板12和第三连接板13或者第一加强板21和第二加强板22之间存在相互冲突，导致破坏第一横梁层1和第二横梁层2的变形溃缩方向，提高变形可控性。
在一些实施例中，所述第一横梁层1与所述第二横梁层2之间设有多个定位柱3，所述定位柱3中心设有安装位，定位柱3分别于第一横梁层1与第二横梁层2固定连接，以方便提供第一横梁层1与第二横梁层2之间的固定，保持第一横梁层1与第二横梁层2的空腔具备一定的抗形变能力。
在一些实施例中，由于第一横梁层1与第二横梁层2之间存在空腔，那么当电池包需要安装时，如果不将电池包与第一横梁层1或第二横梁层2连接，在较大跨度的车架的左纵梁与右纵梁之间，电池包就没有固定点位，电池包的安装稳定性就会大幅下降，然而直接将电池包安装在第一横梁层1或第二横梁层2上，又因为电池包整体的体积、重量等因素，会直接导致第一横梁层1或第二横梁层2发生变形，通过定位柱3作为电池包在该区域的安装位，可以提高电池包的整体稳定性，另外，电池包的多个安装点以及与车身其他地方的连接点，通过电池包的安装，使得车身整体的模态更稳定，也就进一步提高车身强度，保障驾乘安全性。
在一些实施例中，为了提高车身连接整体性，可以设置定位柱3远离电池包的一端与车身主体之间固定连接，并通过预装进行固定，不论电池包是否固定在定位柱3的情况下，都可以保持第一横梁层1或第二横梁层2与车身之间的稳定位置关系。
在一些实施例中，所述第一横梁层1沿平行于所述第一连接段14方向的截面具有弯折，通过第一横梁层1在截面上设置弯折，以提高第一横梁层1整体的结构稳定性，增加第一横梁层1的抗弯能力。
在一些实施例中，所述第二横梁层2一侧边沿延伸至所述第一横梁层1上，并与所述第一横梁层1固定连接，以提高第一横梁层1和第二横梁层2之间连接面积，提高相对稳定性。
在一些实施例中，所述第一连接段14、所述第二连接段15和所述第三连接段23分别为焊接段，提高加工效率，同时也提高连接稳定性。
在一些实施例中，所述第二横梁层2上布置有沿不同方向延伸的加强凹槽4，以提高第二横梁层2整体的结构稳定性，增加第二横梁层2的抗弯能力。
基于一个相同发明构思，依据本公开第二方面还提供一种汽车，包括电池包、车架的左纵梁和右纵梁，以及如上述的前围板下横梁结构。所述第一横梁层1和所述第二横梁层2固定设在车架的所述左纵梁与所述右纵梁之间。所述电池包固定设在所述前围板下横梁结构远离车头的一侧。在该汽车中，除前围板下横梁结构及相关联部件采用上述实施例中的技术方案外，其他装置的结构、连接关系、安装位置等均可参照现有技术的相关公开，此处不做展开说明。
依据本公开实施例的技术方案至少具有以下有益技术效果：本公开中的前围板下横梁结构设在车架的左纵梁与右纵梁之间，前围板下横梁结构包括第一横梁层和第二横梁层，第一横梁层包括依次连接的第一连接板、第二连接板和第三连接板，第二连接板与第一连接板、所述第三连接板之间分别设有第一连接段、第二连接段，第二横梁层设于第一横梁层的一侧，且与第一横梁层之间形成空腔，第二横梁层包括相连接的第一加强板和第二加强板，第一加强板和第二加强板之间设有第三连接段，在该前围板下横梁结构安装在车架上之后，电池包装设在前围板下横梁结构远离车头的一侧，当车头受到正面撞击时，撞击力通过车架的左纵梁与右纵梁向前围板下横梁结构传递，并通过第一连接段、第二连接段和第三连接段形成对第一横梁层和第二横梁层以及第一横梁层和第二横梁层之间空腔的溃缩变形引导，也就是在 第一横梁层和第二横梁层吸能后，会从第一连接段、第二连接段和第三连接段处开始出现变形，并通过第一横梁层和第二横梁层的变形，以及第一横梁层和第二横梁层之间空腔提供的变形空间对电池包进行保护，由于第一连接段、第二连接段和第三连接段在第一横梁层上的投影位于不同位置，避免了第一横梁层和第二横梁层在相同位置出现快速变形，提高第一横梁层和第二横梁层形成的腔体的吸能性能，利于前围板下横梁结构在撞击方向上抵抗车身变形，提高电池包及车身安全。
应当理解，术语第一、第二等仅用于区分描述，而不能理解为指示或暗示相对重要性。尽管本文可以使用术语第一、第二等等来描述各种单元，这些单元不应当受到这些术语的限制。这些术语仅用于区分一个单元和另一个单元。例如可以将第一单元称作第二单元，并且类似地可以将第二单元称作第一单元，同时不脱离本公开的示例实施例的范围。
应当理解，本文中术语“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，单独存在B，同时存在A和B三种情况，本文中术语“/和”是描述另一种关联对象关系，表示可以存在两种关系，例如，A/和B，可以表示：单独存在A，单独存在A和B两种情况，另外，本文中字符“/”，一般表示前后关联对象是一种“或”关系。
应当理解，在本公开的描述中，术语“上”、“竖直”、“内”、“外”等指示的方位或位置关系，是该公开产品使用时惯常摆放的方位或位置关系，或者是本领域技术人员惯常理解的方位或位置关系，仅是为了便于描述本公开和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本公开的限制。
在本公开的描述中，还需要说明的是，除非另有明确的规定和限定，术语“设置”、“安装”、“连接”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，可以具体情况理解上述术语在本公开中的具体含义。
本文使用的术语仅用于描述特定实施例，并且不意在限制本公开的示例实施例。如本文所使用的，单数形式“一”、“一个”以及“该”意在包括复数形式，除非上下文明确指示相反意思。还应当理解术语“包括”、“包括了”、“包含”、和/或“包含了”当在本文中使用时，指定所声明的特征、整数、步骤、操作、单元和/或组件的存在性，并且不排除一个或多个其他特征、数量、步骤、操作、单元、组件和/或他们的组合存在性或增加。
在下面的描述中提供了特定的细节，以便于对示例实施例的完全理解。然而，本领域普通技术人员应当理解可以在没有这些特定细节的情况下实现示例实施例。在其他实施例中，可以不以非必要的细节来示出众所周知的过程、结构和技术，以避免使得示例实施例不清楚。
以上仅是本公开的具体实施方式，使本领域技术人员能够理解或实现本公开。对这些实施例的多种修改对本领域的技术人员来说将是显而易见的，本文中所定义的一般原理可以在不脱离本公开的精神或范围的情况下，在其它实施例中实现。因此，本公开将不会被限制于本文所示的这些实施例，而是要符合与本文所申请的原理和新颖特点相一致的最宽的范围。

Claims (8)

  1. 一种前围板下横梁结构，包括第一横梁层和第二横梁层，其中：
    所述第一横梁层包括依次连接的第一连接板、第二连接板和第三连接板，所述第一连接板远离所述第二连接板的一端用于与车架的左纵梁固定连接，所述第三连接板远离所述第二连接板的一端用于与车架的右纵梁固定连接，且所述第二连接板与所述第一连接板、所述第三连接板之间分别设有第一连接段、第二连接段；
    所述第二横梁层叠置于所述第一横梁层，且与所述第一横梁层之间形成空腔，所述第二横梁层包括相连接的第一加强板和第二加强板，所述第一加强板和所述第二加强板之间设有第三连接段，且所述第三连接段在所述第一横梁层上的投影与所述第一连接段、所述第二连接段错位设置；
    所述第三连接段在所述第一横梁层的投影位于所述第一连接段和所述第二连接段之间；所述第一连接段、所述第二连接段和所述第三连接段在所述第一横梁层上的投影相互平行。
  2. 如权利要求1所述的前围板下横梁结构，其中：所述第一连接段与第二连接段相互平行设置。
  3. 如权利要求1所述的前围板下横梁结构，其中：所述第一横梁层与所述第二横梁层之间设有多个定位柱，所述定位柱中心设有安装位。
  4. 如权利要求1所述的前围板下横梁结构，其中：所述第一横梁层沿平行于所述第一连接段方向的截面具有弯折。
  5. 如权利要求1所述的前围板下横梁结构，其中：所述第二横梁层一侧边沿延伸至所述第一横梁层上，并与所述第一横梁层固定连接。
  6. 如权利要求1所述的前围板下横梁结构，其中：所述第一连接段、所述第二连接段和所述第三连接段分别为焊接段。
  7. 如权利要求1所述的前围板下横梁结构，其中：所述第二横梁层上布置有沿不同方向延伸的加强凹槽。
  8. 一种汽车，包括电池包、车架的左纵梁和右纵梁，以及如权利要求1-7中任一项所述的前围板下横梁结构，所述第一横梁层和所述第二横梁层固定设在所述左纵梁与所述右纵梁之间，所述电池包固定设在所述前围板下横梁结构远离车头的一侧。
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CN109204500A (zh) * 2017-06-30 2019-01-15 比亚迪股份有限公司 车身结构和车辆
CN207902553U (zh) * 2018-01-18 2018-09-25 北京汽车股份有限公司 一种电池包前部框架结构及电动汽车
CN207826350U (zh) * 2018-01-24 2018-09-07 广州汽车集团股份有限公司 汽车前围板结构、汽车前围结构及汽车车身
CN115257945A (zh) * 2022-07-20 2022-11-01 岚图汽车科技有限公司 一种前围板下横梁结构及汽车

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