Accident energy absorption arrangement for an electric vehicle and method thereof

Abstract

The present disclosure provides a crash energy absorption arrangement and a method for reducing the transmission of impact forces to one or more battery cells (104) of an electric vehicle during an accident. The crash energy absorption arrangement (100) comprises a battery housing (102) suitable for mounting one or more battery cells (104) of the electric vehicle and at least one crash element (108) rigidly coupled to a lateral surface of the battery housing (102) to reduce the transmission of impact forces to the one or more battery cells (104) when the electric vehicle is subjected to an impact. A plurality of bending beams (110) is coupled to the at least one crash element (108) such that the plurality of bending beams (110) are spaced apart from one another to allow progressive absorption of the impact forces.

Description

TECHNICAL AREA

[0001] The present disclosure relates to electric vehicles. In particular, the present disclosure relates to a crash energy absorption arrangement configured to improve the safety and structural integrity of battery packs installed in electric vehicles during collision events, and to a method for reducing the transmission of impact forces to the battery packs. BACKGROUND

[0002] With the increasing shift of the automotive industry to electric vehicles (EVs), the importance of effective safety measures is growing. A key aspect of EV safety is the protection of the battery pack, which is typically located beneath the vehicle floor or chassis. This battery pack serves as the primary power source and also plays a vital structural role. In the event of a collision, the integrity of the battery pack is crucial for both the safety of the occupants and the overall performance of the vehicle.

[0003] Conventional vehicles are often equipped with various energy absorption systems to reduce the forces generated in a crash. These systems typically include crumple zones, reinforced frames, and other structural enhancements to manage energy transfer and minimize occupant injuries. However, these existing solutions may not be able to address the specific challenges associated with the unique design and placement of battery packs in electric vehicles. Furthermore, the increasing weight and complexity of battery systems in electric vehicles present new crash safety challenges. There is an urgent need for an effective crash energy absorption approach that does not compromise vehicle performance, battery integrity, or safety standards.

[0004] Existing energy absorption technologies typically rely on passive structural modifications that may not provide optimal protection for the battery pack during severe impacts. Furthermore, many designs fail to adequately consider the specific geometry and location of the battery pack, increasing the risk of battery housing failure or even thermal runaway in severe collisions. Additionally, many existing solutions are heavy or complex, which can negatively impact the vehicle's range and efficiency.

[0005] Furthermore, high-voltage batteries for electric vehicles are increasingly designed as structural components, which contributes to weight reduction and increased energy density. However, these structural and load-bearing batteries must also absorb forces in a crash, resulting in additional stress on the battery cells. Internal specifications require minimal cell deformation to avoid critical issues such as cell outgassing and subsequent thermal runaway. In current designs with cylindrical cells or cells of other form factors arranged in varying patterns, the structural components often direct the forces of a side impact to one side of the cells, leading to excessive deformation in a crash.

[0006] Patent US11541935B2 describes a vehicle frame for an electric vehicle comprising a pair of longitudinal members spaced apart to create a compartment for the battery. A side impact absorber is attached to one of these longitudinal members. The first component of the side impact absorber is attached to the outer side wall of the first longitudinal member and forms a primary load path for absorbing impact forces directed at the longitudinal member. This first component has a corrugated shape and extends outward from the outer side wall to the outer end of the side impact absorber. A second component of the side impact absorber is attached to the outer side wall of the first longitudinal member and is positioned higher than its center. This second component forms a secondary load path for absorbing impact forces from the outer end of the side impact absorber back to the first longitudinal member.However, as is clearly evident from the aforementioned patent specification, the side impact damper only acts as a damper for the impact force transferred to it in an accident and is inefficient when it comes to reducing the impact forces transferred to a battery pack installed under the floor or chassis of the electric vehicle.

[0007] Given the challenges described above, there is an urgent need for a reliable solution to improve the structural integrity of battery packs in electric vehicles, addressing the shortcomings and disadvantages of conventional technologies. This solution should not only protect the battery pack in a collision but also maintain the overall efficiency and performance of the electric vehicle. Furthermore, the structural integrity of the battery pack must be preserved to ensure its safety and reliability. SUBJECT OF THE PRESENT DISCLOSURE

[0008] A general objective of the present disclosure is to provide an accident energy absorption arrangement for maintaining the structural integrity of a battery pack installed in an electric vehicle, as well as a method for reducing the transmission of impact forces to the battery pack.

[0009] One objective of this disclosure is to provide a reliable solution for effectively reducing the impact forces transferred to the battery pack of an electric vehicle during an accident.

[0010] Another objective of the present disclosure is to improve the safety and reliability of a battery pack in an electric vehicle by ensuring that the structural integrity of the battery pack is maintained even if the electric vehicle is subjected to an accident or a collision with an obstacle.

[0011] Another objective of the present disclosure is to provide an accident energy absorption arrangement configured to prevent the occurrence of thermal accidents for a battery pack of an electric vehicle in order to improve the safety of the vehicle's occupants, particularly during an accident.

[0012] Another purpose of this disclosure is to provide a crash energy absorption arrangement capable of effectively managing and dissipating impact forces, thereby ensuring the safety and integrity of an electric vehicle's battery pack in the event of a collision. SUMMARY

[0013] Aspects of the present disclosure relate to a crash energy absorption arrangement designed to preserve the structural integrity of a battery pack in an electric vehicle, and to a method for reducing the transmission of impact forces to the battery pack. The crash energy absorption arrangement is configured to effectively reduce the impact forces transmitted to the battery pack during collisions or accidents. Furthermore, it enhances the safety and reliability of the battery pack by preserving its structural integrity during such events. The crash energy absorption arrangement is also designed to prevent thermal runaway of the battery pack, thereby improving occupant safety. Overall, the crash energy absorption arrangement effectively manages impact forces and ensures the safety and integrity of the battery pack in collisions.

[0014] In one aspect, the crash energy absorption arrangement comprises a battery housing suitable for mounting one or more battery cells of the electric vehicle, and at least one crash element rigidly coupled to a lateral surface of the battery housing to reduce the transmission of impact forces to the one or more battery cells when the electric vehicle is subjected to an impact. The crash energy absorption arrangement also comprises a plurality of bending beams coupled to the at least one crash element such that the plurality of bending beams are spaced apart to allow progressive absorption of the impact forces.

[0015] In one embodiment, the at least one accident element can have a side wall with a plurality of wave projections facing the lateral surface of the battery housing.

[0016] In one embodiment, the at least one accident element can comprise a support element 202 that is connected to a load-bearing structure of the electric vehicle.

[0017] In one embodiment, each of the multiple bending beams can comprise a plurality of bending plates. At least two adjacent bending plates of the plurality of bending plates are connected to each other by a curved bending plate at a predetermined distance. In one embodiment, the predetermined distance for the curved bending plates of the multiple bending beams can be selected based on the impact forces that the multiple bending beams must absorb when the electric vehicle is subjected to the accident.

[0018] In one embodiment, the majority of the bending beams can be arranged asymmetrically, while with a symmetrical arrangement of the battery cells, they can be aligned in a straight line. An air gap is provided between adjacent bending beams, enabling progressive absorption of the impact forces.

[0019] In one embodiment, each of the multiple bending beams can be designed to deform and absorb the impact forces applied to it when the electric vehicle is subjected to an accident, in order to assist the at least one accident element in reducing the transmission of the impact forces to the one or more battery cells.

[0020] In one embodiment, the majority of the bending beams can be fitted into a cavity formed in the at least one impact element. In another embodiment, the majority of the bending beams can be fitted into a lateral surface on both sides of the support element, depending on the packaging and load requirements.

[0021] Another aspect of the present disclosure relates to a method for reducing the transmission of impact forces to one or more battery cells of an electric vehicle. The method comprises the steps of securing the one or more battery cells in a battery housing and attaching at least one crash element to a lateral surface of the battery housing to reduce the transmission of impact forces to the one or more battery cells when the electric vehicle is subjected to an accident. The method also comprises the step of coupling a plurality of bending beams to the at least one crash element such that the plurality of bending beams are spaced apart from one another to allow progressive absorption of the impact forces.

[0022] In one embodiment, each of the multiple bending beams can comprise multiple bending plates, wherein at least two adjacent bending plates of the multiple bending plates are connected to each other by a curved bending plate at a predetermined distance. The coupling step can include selecting the predetermined distance for the curved bending beams of the plurality of bending beams based on the impact forces that must be absorbed by the plurality of bending beams when the electric vehicle is subjected to the accident.

[0023] In one embodiment, the step of coupling the multiple bending beams with the at least one impact element can include the asymmetrical arrangement of the multiple bending beams or the arrangement of the multiple bending beams in a line relative to each other in the case of a symmetrical arrangement of the battery cells. An air gap is provided between adjacent bending beams, which enables progressive absorption of the impact forces.

[0024] In one embodiment, the method may involve the multiple bending beams supporting the impact forces applied to them when the electric vehicle is subjected to an accident by deforming the multiple bending beams in order to reduce the transmission of the impact forces to the one or more battery cells.

[0025] Various objects, features, aspects and advantages of the subject matter according to the invention will become clearer from the following detailed description of preferred embodiments together with the accompanying drawing figures, in which the same numbers represent the same components. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings serve to further understand the present disclosure and are an integral part of this description. The drawings illustrate exemplary embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure. Fig. Figure 1 shows an exemplary top view of an accident energy absorption arrangement for an electric vehicle according to an embodiment of the present disclosure; Fig. Figure 2 shows an exemplary perspective view of the accident energy absorption arrangement for an electric vehicle according to an embodiment of the present disclosure; Fig. 3A and Fig. Figure 3B shows various exemplary representations of a plurality of bending beams coupled to an accident element of the accident energy absorption arrangement, according to an embodiment of the present disclosure; and Fig. Figure 4 shows an exemplary flowchart for a method for reducing the transmission of impact forces to one or more battery cells of an electric vehicle according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0027] A detailed description of the embodiments of the disclosure illustrated in the accompanying drawings follows. The embodiments are described in sufficient detail to clearly convey the disclosure. However, the necessary level of detail is not intended to limit foreseeable variations of embodiments; on the contrary, it is intended to cover all modifications, equivalents, and alternatives that fall within the scope of this disclosure as defined by the accompanying claims.

[0028] The embodiments described here relate to a crash energy absorption arrangement and a method for preserving the structural integrity of a battery pack in an electric vehicle. The crash energy absorption arrangement is specifically designed to efficiently minimize the impact forces transmitted to the battery pack during collisions or accidents involving the vehicle. The crash energy absorption arrangement improves the safety and reliability of the battery pack by maintaining its structural integrity in such situations. Furthermore, the crash energy absorption arrangement is configured to prevent thermal runaway events in the vehicle's battery pack, thereby increasing the safety of both the battery pack and the occupants of the electric vehicle.

[0029] Fig. Figure 1 shows an exemplary top view of an accident energy absorption arrangement (referred to here as the “arrangement”) 100 for an electric vehicle, designed to effectively manage and dissipate impact forces during an impact or collision and to reduce the transmission of such forces to the vehicle’s battery pack, thereby improving the safety and reliability of the battery pack. The arrangement 100 comprises a battery housing 102 suitable for accommodating the battery pack with one or more battery cells 104 configured to drive at least one of the vehicle’s electric motors. The battery housing 102 may include a base 106 for supporting the battery cells 104 and a plurality of lateral surfaces that surround the battery cells 104 from the sides to form a protective enclosure for the battery cells 104.The battery housing 102 can be positioned below the floor or chassis of the vehicle so that the vehicle floor can cover the battery cells 104 from above when they are mounted on the base 106. The battery housing 102 can be made of plastic, fiber-reinforced plastic, composite materials, metal, or alloys to absorb impact forces while providing sufficient rigidity for mounting the battery cells 104. The battery housing 102 can have a plurality of mounting sections at its base 106, each designed to accommodate a battery cell. In an exemplary embodiment, the battery housing 102 can be adapted to mount various types of battery cells 104, such as cylindrical cells 104, prismatic cells 104, pouch cells 104, and other battery cell configurations.

[0030] In an exemplary embodiment, the remaining space within the battery housing 102, after the battery cells 104 have been attached to their respective fixed sections of the battery housing 102, can be filled with a potting material to protect the battery cells 104 from vibrations and shocks. The potting material can be selected from a group that includes thermosetting plastics, silicone rubber gel, epoxy resins, and other similar materials.

[0031] The arrangement 100 comprises at least one crash element 108 that is rigidly coupled to a lateral surface of the battery housing 102 in order to reduce the transmission of impact forces to the battery cells 104 when the electric vehicle is subjected to an accident or a collision with an obstacle. With reference to Fig. 2. The crash element 108 can comprise a support element 202 that is connected to a load-bearing structure, such as a cross member or a longitudinal member, of the electric vehicle's chassis. The support element 202 can be in the form of a rod or a plate suitable for firmly coupling the crash element 108 to the load-bearing structure of the electric vehicle. In one exemplary embodiment, the arrangement 100 can comprise four crash elements 108, each coupled to a lateral surface of the battery housing 102. In another exemplary embodiment, the arrangement 100 can comprise two crash elements 108 coupled to the lateral surfaces of the battery housing 102 located on opposite sides of the base 106 of the battery housing 102 in a longitudinal direction of the vehicle.The crash element 108 can be made of a plastic, a fiber-reinforced plastic, or a composite material to absorb impact forces and reduce the transmission of these forces to the side surfaces of the battery housing 102 when the vehicle is subjected to an impact or collision. The crash element 108 can be easily manufactured by injection molding. Each crash element 108 can have a side wall with a plurality of wave projections 204 facing the side surface of the battery housing 102 to facilitate the absorption of impact forces during the crash.

[0032] The crash energy absorption arrangement 100 also includes a plurality of bending beams 110, which are detachably attached to the crash element 108, ensuring that the bending beams 110 are spaced apart from one another and that an air gap exists between adjacent bending beams 110. The bending beams 110 can be fitted into a cavity 206 of the crash element 108. In an exemplary embodiment, the bending beams 110 can be fitted into a lateral surface on both sides of the support element 202, depending on the requirements of the housing and the design. This reduces the stiffness of the crash element 108 and results in high energy absorption, leading to progressive deformation of the bending beams 110 and progressive absorption of the impact forces during an electric vehicle crash.In an exemplary embodiment, the bending beams 110 can be arranged asymmetrically or, in the case of a symmetrical arrangement of the battery cells 104, in a line with each other. The air gap is provided between adjacent bending beams 110 to support the progressive absorption of the impact forces.

[0033] The bending beams 110 are designed to deform under the influence of these impact forces and thus store potential energy at predetermined intervals based on the distance between adjacent bending beams 110. The potential energy is stored in the bending beams 110 until they are damaged or deformed. Because the potential energy is stored in the bending beams 110 and not transmitted to the battery housing 102, the impact on the battery cells 104 is significantly reduced. This absorption of the impact forces by the bending beams 110 reduces the transmission of forces to the battery cells 104, thereby increasing their safety and reliability. Furthermore, the impact forces are initially absorbed by the deformation of the bending beams 110 before they reach the encapsulation material of the battery housing 102.This arrangement further reduces the transmission of impact forces to the battery cells 104, thus minimizing intrusion even in accidents involving the electric vehicle.

[0034] Fig. 3A and Fig. Figure 3B shows exemplary representations of the bending beams 110 fitted into the cavity 206 of the crash element 108. Each bending beam 110 can comprise several bending plates 302, with at least two adjacent bending plates 302 being connected to each other by a curved bending plate 304 having a predetermined spacing. In one exemplary embodiment, the length of each bending plate 302 can be the same as that of an adjacent plate 302. In another exemplary embodiment, the length of the bending plate 302 can differ from that of the adjacent plate 302. The bending beams 110 can be made of at least one plastic, a fiber-reinforced plastic, a composite material, a metal, or an alloy. The bending beams 110 can be easily manufactured by injection molding.

[0035] In an exemplary embodiment, the thickness of the bending plates 302 and the predetermined spacing for the curved bending plates 304 can be selected based on the impact forces that must be absorbed by the corresponding bending beam 110 when the electric vehicle is subjected to an accident or collision. Each of the bending beams 110 can be adapted to deform and absorb the impact forces applied to it during an accident, in order to assist the crash element 108 in reducing the transmission of the impact forces to the battery cells 104 housed in the battery casing 102.

[0036] Fig. Figure 4 shows an exemplary flowchart representation of a method 400 for reducing the transmission of impact forces to one or more battery cells 104 of an electric vehicle. The method 400 is carried out by the crash energy absorption arrangement 100, as described in the Fig. 1 and Fig.Figure 2 is shown. Figures 1 and 2 are shown. Method 400 comprises step 402 of fastening the battery cells 104 into the battery housing 102 of the arrangement 100. Each of the battery cells 104 can be accommodated in a fastening section provided at the base 106 of the battery housing 102, such that the battery cells 104 are enclosed by the lateral surfaces of the battery housing 102. The battery housing 102 can be positioned below a floor or chassis of the vehicle so that the vehicle floor covers the battery cells 104 from above when they are fastened to the base 106. In an exemplary embodiment, the battery housing 102 can be adapted to accommodate various types of battery cells 104, such as cylindrical cells 104, prismatic cells 104, pouch cells 104, and other battery cell configurations.In an exemplary embodiment, the remaining section of the battery housing 102 can be filled with a potting material to protect the battery cells 104 from vibrations and shocks after the battery cells 104 have been mounted over the corresponding fixed sections of the battery housing 102.

[0037] Method 400 comprises, in step 404, attaching at least one crash element 108 of the arrangement 100 to a lateral surface of the battery housing 102 to reduce the transmission of impact forces to the battery cells 104 when the electric vehicle is subjected to an accident. In an exemplary embodiment, two crash elements 108 can be attached / bonded to the lateral surfaces of the battery housing 102, located on opposite sides of the base 106 of the battery housing 102 in the longitudinal direction of the vehicle. Each crash element 108 can have a side wall with corrugated projections 204 facing the corresponding lateral surface of the battery housing 102 to facilitate the absorption of impact forces during the accident.

[0038] Method 400 also includes a step 406 for coupling the multiple bending beams 110 of the arrangement 100 to the crash element 108, such that adjacent bending beams 110 are spaced apart from one another by an air gap to allow progressive absorption of the impact forces during a collision event for the electric vehicle. The bending beams 110 can be fitted into the cavity 206 of the crash element 108. In an exemplary embodiment, each bending beam 110 can comprise a plurality of bending plates 302, such that adjacent bending plates 302 are connected to one another by a curved bending plate 304 at a predetermined distance.The coupling step 406 may include the selection of the thickness of the bending plates 302 and the predetermined spacing for the curved bending plates 304 of each bending beam 110 based on the impact forces that must be absorbed by the bending beams 110 when the electric vehicle is subjected to the accident.

[0039] Step 406 of the coupling process enables the bending beams 110 to progressively absorb the impact forces applied to them when the electric vehicle is subjected to an accident, due to their deformation. This helps the crash element 108 to minimize the transmission of impact forces to the battery cells 104 housed in the battery casing 102. The bending beams 110 can be adapted to deform under the influence of the impact forces, thus enabling effective absorption of the impact forces and significantly reducing their transmission to the crash element 108 and ultimately to the lateral surfaces of the battery casing 102.

[0040] In an exemplary embodiment, step 406 of coupling the bending beams 110 with the crash element 108 can include the asymmetric arrangement of the bending beams 110 or the arrangement of the bending beams 110 in a line to each other in the case of a symmetric arrangement of the battery cells 104. The air gap is provided between adjacent bending beams 110 to enable progressive absorption of the impact forces.

[0041] The bending beams 110 are designed to deform under the influence of impact forces during an accident or collision of the vehicle in order to store potential energy at predetermined intervals based on the distance between adjacent bending beams 110. The potential energy is stored in the bending beams 110 until they are sacrificed. Because the potential energy is stored in the bending beams 110 and not transferred to the battery housing 102, the impact on the battery cells 104 is significantly reduced. This absorption of impact forces by the bending beams 110 reduces the transmission of forces to the battery cells 104, thereby increasing their safety and reliability. Furthermore, the impact forces are initially absorbed by the deformation of the bending beams 110 before they reach the potting material of the battery housing 102.This reduces the transmission of impact forces to the battery cells 104 and minimizes penetration into the cells even in accidents involving the electric vehicle.

[0042] While the foregoing describes various embodiments of the invention, other and further embodiments of the invention can be developed without deviating from the fundamental scope of the invention. The scope of the invention is defined by the claims that follow. The invention is not limited to the described embodiments, variants, or examples, provided that they are intended to enable a person with ordinary technical knowledge to manufacture and use the invention when combined with information and knowledge available to such a person. BENEFITS OF THE PRESENT DISCLOSURE

[0043] The present disclosure provides an accident energy absorption arrangement designed to preserve the structural integrity of a battery pack installed in an electric vehicle, and a corresponding method.

[0044] The present disclosure provides a crash energy absorption arrangement and a method designed to efficiently minimize the impact forces transferred to the battery pack of an electric vehicle during a crash.

[0045] The present disclosure provides a crash energy absorption arrangement that increases the safety and reliability of a battery pack in an electric vehicle by ensuring that its structural integrity is maintained even if the vehicle is involved in a crash or collides with an obstacle.

[0046] The present disclosure provides a crash energy absorption arrangement designed to prevent thermal accidents in the battery pack of an electric vehicle and thereby improve the safety of the occupants, particularly during an impact.

[0047] The present disclosure provides a crash energy absorption arrangement capable of effectively managing and dissipating impact forces, thereby ensuring the safety and integrity of the battery pack in collisions. QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] US 11541935B2

[0006]

Claims

[1] Accident energy absorption arrangement (100) for an electric vehicle, comprising: a battery housing (102) suitable for mounting one or more battery cells (104) of the electric vehicle; at least one crash element (108) that is rigidly coupled to a lateral surface () of the battery housing (102) to reduce the transmission of impact forces to the one or more battery cells (104) when the electric vehicle is subjected to a crash; and a plurality of bending beams (110) coupled to the at least one accident element (108) in such a way that the plurality of bending beams (110) are spaced apart from each other to allow progressive absorption of the impact forces. [2] Accident energy absorption arrangement (100) according to claim 1, wherein the at least one accident element (108) has a side wall with a plurality of wave projections (204) facing the lateral surface () of the battery housing (102). [3] Accident energy absorption arrangement (100) according to claim 1, wherein the at least one accident element (108) comprises a support element (202) which is connected to a load-bearing structure of the electric vehicle. [4] Accident energy absorption arrangement (100) according to claim 1, wherein each of the multiple bending beams (110) comprises multiple bending plates (302), wherein at least two adjacent bending plates (302) of the multiple bending plates (302) are connected to each other by a bent bending plate (304) at a predetermined distance. [5] Accident energy absorption arrangement (100) according to claim 4, wherein the predetermined spacing for the curved bending plates (304) of the plurality of bending beams (110) is selected on the basis of the impact forces to be absorbed by the plurality of bending beams (110) when the electric vehicle is subjected to impact. [6] Arrangement (100) for accident energy absorption according to claim 1, wherein each of the multiple bending beams (110) is designed to deform and absorb the impact forces supplied to it when the electric vehicle is subjected to an accident, in order to enable the at least one accident element (108) to reduce the transmission of the impact forces to the one or more battery cells (104). [7] Accident energy absorption arrangement (100) according to claim 1, wherein the multiple bending beams (110) are fitted into a cavity (206) formed in the at least one accident element (108). [8] Method (400) for reducing the transmission of impact forces to one or more battery cells (104) of an electric vehicle, comprising the following steps: Securing one or more battery cells (104) in a battery housing (102); Attaching at least one accident element (108) to a lateral surface () of the battery housing (102) to prevent the impact forces from being transferred to the one or more battery cells (104) when the electric vehicle is subjected to an accident; and Coupling a plurality of bending beams (110) with the at least one accident element (108) such that the plurality of bending beams (110) are spaced apart from each other to allow progressive absorption of the impact forces. [9] Method (400) according to claim 8, wherein: Each of the multiple bending beams (110) comprises multiple bending plates (302), wherein at least two adjacent bending plates (302) of the multiple bending plates (302) are connected to each other by a curved bending plate (304) at a predetermined distance, and The coupling step includes selecting the predetermined division for the curved bending plates (304) of the plurality of bending beams (110) based on the impact forces to be absorbed by the plurality of bending beams (110) when the electric vehicle is subjected to the accident. [10] Method (400) according to claim 8, further comprising that the multiple bending beams (110) absorb the impact forces supplied to them when the electric vehicle is subjected to an accident by deformation of the multiple bending beams (110) in order to enable the at least one bending beam (108) to reduce the transmission of the impact forces to the one or more battery cells (104).

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