• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a traction battery support (1) for a rear part (3) of a motor vehicle equipped with two longitudinal beams (5) forming two beams (5). The traction battery holder (1) comprises a receiving area (7) for the battery (9), and two lateral support areas (11) which extend longitudinally on each side of the receiving area (7) of the battery (9) and which are configured to bear on the two beams (5), respectively. The two lateral support zones (11) of the support (1) are in fact formed by two longitudinal sections (13) which extend rearwards beyond the receiving zone (7) of the battery (9 ) so as to form a deformable energy absorption zone in the event of an impact at the rear of the vehicle.
    公开号:FR3081817A1
    申请号:FR1854781
    申请日:2018-06-01
    公开日:2019-12-06
    发明作者:Baye Diaw；Bernard Patout
    申请人:PSA Automobiles SA；
    IPC主号:
    专利说明:

    MODULAR BATTERY HOLDER FOR REAR SHOCK PROTECTION
    The invention is in the field of motor vehicle bodies, in particular electric or hybrid motor vehicles, and relates to the protection of traction batteries in the event of a rear impact.
    The architecture of vehicles with electric or hybrid traction is often specific. Thus, the electric traction battery of these vehicles is generally implemented at the central part of the body structure, or between the two axles, at the front axle or the rear axle. In the latter case, the positioning of the battery is then carried out in place of the fuel tank of a thermal vehicle and benefits from the transverse stiffness of the rear axle which ensures its integrity during a side impact. . However, in this position, the significantly greater mass of the electric battery also modifies the behavior of the vehicle, in that in the event of a rear impact, the structure of the vehicle then deforms further to the point of potentially damaging the battery integrity.
    The published patent document WO2012 / 035987 A1 describes a traction battery support placed at the axle of the rear axle of an electric or hybrid vehicle. The support supports the electric battery and is connected to each of the two side beams of the chassis by means of a support member. This member notably includes an interference piece which interacts in the event of a rear impact with a reinforced structure fixed to the chassis. Thus, during a rear impact on the vehicle which results in the separation of the support member from the chassis and the forward movement of the battery, the latter remains nevertheless maintained at the reinforced structure by means of of this interference piece. Although this battery support has a compact structure allowing it to be inserted and maintained in a rear unit of reduced size, the fact remains that the structure of the vehicle must be adapted to the increase in mass and that in case rear shock the electric battery is not as such protected against the depression of the rear of the vehicle, and therefore of any deterioration.
    To meet this constraint, the state of the art also reinforces the base of electric or hybrid vehicles by installing, under and / or around electric batteries, modular reinforcing elements. This is the case, for example, in the published patent document FR3054817 A1 which describes in particular a reinforcing element for a body formed from tubes and metal profiles associated with impactors and energy absorption means capable of deforming in the event of rear impact to ensure a buffer role and thus protect the battery and the rest of the vehicle. However, even if this type of reinforcement has the advantage of being more adjustable according to the wheelbase and the overhang of the silhouette of the vehicle and therefore adjustable to vehicles having a short rear part, it is nevertheless added to the battery support causing additional bulk and an increase in the mass of the vehicle structure.
    The aim of the invention is to overcome at least one of the drawbacks of the above-mentioned state of the art. More particularly, the invention aims to make a vehicle compatible with rear impact constraints in the presence of a traction battery and thus protect the battery, especially in short rear units, and this in a simple and economical manner.
    To this end, the invention relates to a traction battery support for a rear part of a motor vehicle, equipped with two longitudinal beams forming two beams, said support comprising: a battery receiving area; two lateral support zones extending longitudinally on each side of the battery reception zone and configured to bear on the two beams, respectively; remarkable in that the two lateral support zones comprise two longitudinal sections extending rearwards beyond the zone for receiving the battery so as to form a deformable zone of energy absorption in the event of impact at the rear of the vehicle.
    According to an advantageous embodiment of the invention, the support comprises a transverse profile delimiting the rear of the receiving area of the battery.
    According to an advantageous embodiment of the invention, the transverse section is rigidly fixed to the two longitudinal sections.
    According to an advantageous embodiment of the invention, the transverse profile is perpendicular to the two longitudinal profiles or forms with a direction perpendicular to each of said profiles an angle of less than 20 °.
    According to an advantageous embodiment of the invention, the two lateral support zones each comprise, in addition, at least one lug extending transversely from the corresponding longitudinal profile so as to form a support surface on the corresponding spar.
    According to an advantageous embodiment of the invention, the longitudinal sections extend rearwards beyond the battery receiving zone over a distance which is greater than 50% of the average longitudinal extent of said zone.
    Advantageously, the two longitudinal sections are stamped, in particular of hollow rectangular sections, of metal or composite.
    The invention also relates to a motor vehicle comprising: a rear part equipped with two longitudinal beams forming two beams; and a traction battery support, disposed on the rear part between the two beams; remarkable in that the traction battery holder conforms to the invention.
    According to an advantageous embodiment of the invention, the side members extend rearward from a rear edge of the floor to a rear cross member of the bumper over a given length, the two longitudinal sections of the support extending over more 50% of said length.
    According to an advantageous embodiment of the invention, each of the two longitudinal sections is fixed to the corresponding beam, in particular by screwing, at several locations distributed over a total length of said section.
    According to an advantageous embodiment of the invention, the two longitudinal profiles of the support have rear ends which are in contact with or at a distance less than 150mm from the rear bumper cross member.
    The measures of the invention are advantageous in that they make it possible to adapt, in a particularly simple and economical manner, the behavior of a vehicle in response to a rear impact when the vehicle is equipped with a traction battery. In particular, they improve the protection of the batteries of electric or hybrid vehicles when they are arranged in a short rear unit, between the two wheels of the rear axle. This protection is provided in particular by the battery support of this invention which, in addition to fulfilling its function of supporting the battery receiving area, has, thanks to its coupling to the side members, an additional function of reinforcing the rear part of the vehicle. in the event of a rear impact. This support is all the more interesting because it allows you to manage different stiffnesses on the same rear unit without having to design a new vehicle base with specific spars. In this sense, the manufacture of the rear units is therefore preserved without the need to modify the size of the beams or to add bulky reinforcing elements to the electric battery support which increase the mass of the vehicle.
    Other characteristics and advantages of the present invention will be better understood from the description and the drawings, among which:
    - Figure 1 illustrates a top view of a traction battery support according to the invention, and on which is fixed a battery;
    - Figure 2 shows a top view and more detailed of the implementation of the traction battery holder of Figure 1 in the rear part of an electric or hybrid vehicle.
    In the following description, the terms "front" and "rear" will be understood in relation to the general orientation of the vehicle.
    Figure 1 is a top view of an embodiment of a traction battery holder 1 according to the invention. This support 1 is intended to be arranged in the rear part 3 of a motor vehicle of the electric or hybrid type (not shown), in particular at the level of the two longitudinal beams 5 forming the two rear side members 5. This traction battery support 1 comprises in particular a reception area 7 for the battery 9 (delimited in a box) and two lateral support zones 11 (delimited by a brace).
    The receiving area 7 of the battery 9 is delimited laterally by two longitudinal sections 13 and at the rear by a transverse section 17 which is positioned perpendicular to the two longitudinal sections 13 on which it is fixed in a solid manner, for example by welding. Advantageously, the transverse section 17 is perpendicular to the two longitudinal sections 13 or forms with a direction perpendicular to these sections an angle less than 20 °. In FIG. 1, the traction battery 9 of the vehicle in question is in particular illustrated arranged on the reception area 7, the front of the battery 9 being fixed on the end of the floor 19 and the rear being fixed on the transverse section 17 .
    Regarding the two lateral support zones 11, these zones in fact extend over the entire length of the two longitudinal sections 13, which each bear on a spar 5 of the motor vehicle. Preferably, the two longitudinal sections 13 extend over a distance which is greater than 50% of the average longitudinal extent of the reception area 7. In the event of an impact at the rear of the electric or hybrid vehicle on which the traction battery support 1 and the battery 9, the two lateral support zones 11 constitute a deformable energy absorption zone.
    Each of these two lateral support zones 11 also generally comprises at least one fixing lug 15 on the corresponding beam 5. In this case in FIG. 1, four fixing lugs 15 are shown on each of the longitudinal profiles 13, each of these lugs 15 extending transversely from a longitudinal profile 13 towards a spar 5 to form a bearing surface on the corresponding spar 5.
    The configuration and arrangement of the two lateral support zones 11 of the support 1 according to the invention allows the support 1 itself to be adaptable in length and in stiffness. This is how this adaptability makes it possible to incorporate different sizes of electric battery 9 on the reception area 7 but also to adjust the stiffness of the rear part 3 of the vehicle to the necessary amount rather than applying it over the entire length. of the two beams 5.
    Figure 2 shows a top view and more detailed of the implementation of the traction battery support 1 of Figure 1 in the rear part 3 of an electric or hybrid vehicle 2 (partially shown) which rear part 3 is equipped with two longitudinal beams 5 forming two beams 5. The latter extend in particular over a given length towards the rear, in particular from a rear edge of the floor 19 of the vehicle 2 to a rear cross member of the bumper 25. The two longitudinal sections 13 of the traction battery support 1 are in contact with or at a distance of less than 150mm from the bumper crossmember 25 and preferably extend over more than 50% of the length between the rear edge of the floor 19 and this same cross member 25. In addition, in addition to being able to be connected to the side members 5 by fixing lugs 15, these two longitudinal sections 13 are also fixed s longitudinally thereof at a plurality of locations distributed over their entire length. This fixing can in particular be carried out by any means known to a person skilled in the art such as for example screwing or welding.
    In general, this invention incorporates additional functions in a traction battery holder. Thus, in addition to the support function of the battery receiving area, the arrangement and fixing of the two lateral support areas of this support on the beams, provide the same support with a geometry that can be adjusted in stiffness and in length. which contribute to limiting in a rear impact the depression of the rear unit of the vehicle on which it is installed, and thus to improve the protection of the traction battery from the effects of this shock.
    权利要求:
    Claims (10)
    [1" id="c-fr-0001]
    1. Traction battery support (1) for a rear part (3) of a motor vehicle (2), equipped with two longitudinal beams (5) forming two beams (5), said support (1) comprising:
    - a reception area (7) of the battery (9);
    - two lateral support zones (11) extending longitudinally on each side of the receiving zone (7) of the battery (9) and configured to bear on the two beams (5), respectively;
    characterized in that the two lateral support zones (11) comprise two longitudinal sections (13) extending rearwards beyond the receiving zone (7) of the battery (9) so as to form a deformable energy absorption zone in the event of an impact at the rear of the vehicle (2).
    [2" id="c-fr-0002]
    2. Support (1) according to claim 1, characterized in that the support (1) comprises a transverse profile (17) delimiting the rear of the receiving area (7) of the battery (9).
    [3" id="c-fr-0003]
    3. Support (1) according to claim 2, characterized in that the transverse section (17) is rigidly fixed to the two longitudinal sections (13).
    [4" id="c-fr-0004]
    4. Support (1) according to one of claims 2 and 3, characterized in that the transverse profile (17) is perpendicular to the two longitudinal profiles (13) or forms with a direction perpendicular to each of said profiles (13) an angle less than 20 °.
    [5" id="c-fr-0005]
    5. Support (1) according to one of claims 1 to 4, characterized in that the two lateral support zones (11) each comprise, in addition, at least one tab (15) extending transversely from the corresponding longitudinal section (13) so as to form a bearing surface on the corresponding beam (5).
    [6" id="c-fr-0006]
    6. Support (1) according to one of claims 1 to 5, characterized in that the longitudinal sections (13) extend rearward beyond the receiving area (7) of the battery (9) over a distance which is greater than 50% of the average longitudinal extent of said zone (7).
    [7" id="c-fr-0007]
    7. Motor vehicle (2) comprising:
    - a rear part (3) equipped with two longitudinal beams (5) forming two beams (5); and
    - a traction battery support (1), arranged on the rear part (3) between the two beams (5);
    characterized in that the traction battery holder (1) conforms to one of claims 1 to 6.
    [8" id="c-fr-0008]
    8. Vehicle (2) according to claim 7, characterized in that the beams (5) extend rearward from a rear edge of the floor (19) to a rear bumper crossmember (25) on a given length, the two longitudinal sections (13) of the support (1) extending over more than 50% of said length.
    [9" id="c-fr-0009]
    9. Vehicle (2) according to one of claims 7 and 8, characterized in that each of the two longitudinal sections (13) is fixed to the spar (5) corresponding, in particular by screwing, to several locations distributed over a total length of said profile (13).
    [10" id="c-fr-0010]
    10. Vehicle (2) according to one of claims 7 to 9, characterized in that the two longitudinal sections (13) of the support (1) have rear ends which are in contact or at a distance less than 150mm from the crossmember rear of bumper (25).
    类似技术:
    公开号 | 公开日 | 专利标题
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    FR3009256A1|2015-02-06|LOW ROAD FOR MOTOR VEHICLE
    WO2019234319A1|2019-12-12|Traction battery rail beneath the floor of a vehicle
    FR3091039A1|2020-06-26|Device for attaching an element on board a motor vehicle, such as a battery container
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    FR3066966A1|2018-12-07|RELEASE DEVICE FOR REAR IMPACT VEHICLE WHEEL SUPPORT AND VEHICLE HAVING SUCH A DEVICE
    同族专利:
    公开号 | 公开日
    FR3081817B1|2020-07-24|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    EP2214225A1|2007-11-21|2010-08-04|Honda Motor Co., Ltd.|Electric power source device for vehicle|
    US20130249243A1|2012-03-22|2013-09-26|Ford Global Technologies, Llc|Crash brace for energy management|
    US20140008137A1|2012-07-05|2014-01-09|Suzuki Motor Corporation|Vehicle rear structure|
    US20140070566A1|2012-09-12|2014-03-13|Honda Motor Co., Ltd|Vehicle rear body structure|
    DE102015205255A1|2014-03-28|2015-10-01|Fuji Jukogyo K.K.|Protective structure for a battery module arranged in a rear part of a vehicle body|
    DE202016106390U1|2015-11-18|2016-12-05|Ford Global Technologies, Llc|Integrated extruded battery case attachment|
    DE102016004384A1|2016-04-08|2017-10-12|Audi Ag|Security system for an energy storage of a motor vehicle and motor vehicle with a security system|
    FR3058365A1|2016-11-08|2018-05-11|Peugeot Citroen Automobiles Sa|SUPPORT FOR MULTIFUNCTION BATTERY|CN111186492A|2020-01-19|2020-05-22|浙江吉智新能源汽车科技有限公司|Vehicle body structure for replaceable electric vehicle|
    FR3105151A1|2019-12-18|2021-06-25|Renault S.A.S|AUTOMOTIVE VEHICLE BODY REAR STRUCTURE WITH POLYMER FLOOR AND BATTERY HOLDER|
    法律状态:
    2019-05-21| PLFP| Fee payment|Year of fee payment: 2 |
    2019-12-06| PLSC| Search report ready|Effective date: 20191206 |
    2020-05-20| PLFP| Fee payment|Year of fee payment: 3 |
    2021-05-19| PLFP| Fee payment|Year of fee payment: 4 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1854781|2018-06-01|
    FR1854781A|FR3081817B1|2018-06-01|2018-06-01|MODULAR BATTERY HOLDER FOR REAR IMPACT PROTECTION|FR1854781A| FR3081817B1|2018-06-01|2018-06-01|MODULAR BATTERY HOLDER FOR REAR IMPACT PROTECTION|
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