Edge beam for battery tray, battery tray, battery pack, and vehicle

Abstract

The present disclosure discloses an edge beam (23) for a battery tray (100), a battery pack (200), and a vehicle (2000). The edge beam (23) comprises: an edge beam body (231). The edge beam body (231) defines a cavity (2311), and the edge beam body (231) has a partition section (232). The partition section (232) is located within the cavity, and the partition section (232) is connected between the upper wall (233) and the lower wall (234) of the cavity to divide the cavity (2311) into a first sub-cavity (2351) and a second sub-cavity (2352). The first sub-cavity (2351) and the second sub-cavity (2352) are arranged sequentially in the first direction of the edge beam (23). The first sub-cavity (2351) has a cross-sectional area of ​​S1, and the second sub-cavity (2352) has a cross-sectional area of ​​S2, and S1 and S2 are related by: 0.8 <S1 / S2<1을 충족시킨다.

Description

Technology Field

[0001] Cross-reference regarding related applications

[0002] The present disclosure claims priority and benefits to Chinese patent application No. 2022102495003 filed by BYD Company Limited on March 14, 2022, under the title “EDGE BEAM FOR BATTERY TRAY, BATTERY TRAY, BATTERY PACK AND VEHICLE”.

[0003] Technology field

[0004] The present disclosure relates to the field of batteries, and specifically to an edge beam for a battery tray, a battery tray, a battery pack, and a vehicle. Background Technology

[0005] In the relevant technology, the battery pack is equipped with a battery tray. The battery tray includes a frame, and the frame includes an edge beam. The edge beam has insufficient structural strength and poor stability, so the edge beam tends to deform, which affects the service life of the edge beam. When the edge beam is subjected to impact, the impact force transmitted into the battery pack is large, and there is a high risk of damage to the battery core inside the battery pack, which affects the safety of the battery pack during use.

[0006] The present disclosure aims to solve at least one of the technical problems of the relevant technology. To this end, one objective of the present disclosure is to provide an edge beam for a battery tray. By the edge beam for the battery tray, the structural strength and stiffness of the edge beam are increased, the battery pack is ensured to have an appropriate modal, impact forces are absorbed when the sub-cavity is impacted, and impact forces transmitted into the battery pack are reduced, thereby improving the safety of the battery pack during use, reducing the risk of deformation of the edge beam, and extending the service life of the edge beam and the battery tray.

[0007] The present disclosure further provides a battery tray.

[0008] The present disclosure further provides a battery pack.

[0009] The present disclosure additionally provides a vehicle.

[0010] According to the edge beam for a battery tray according to the present disclosure, the battery tray has a placement slot for receiving a battery core. The edge beam comprises: an edge beam body. The edge beam body defines a cavity, and the edge beam body has a partition portion. The partition portion is located within the cavity and is connected between the upper wall and the lower wall of the cavity to divide the cavity into a first sub-cavity and a second sub-cavity. The first sub-cavity and the second sub-cavity are arranged sequentially in a first direction of the edge beam. The first sub-cavity has a cross-sectional area of ​​S1, and the second sub-cavity has a cross-sectional area of ​​S2, and S1 and S2 are related by: 0.8 <S1 / S2<1을 충족시킨다.

[0011] According to the edge beam for a battery tray according to the present disclosure, by using the edge beam according to the present disclosure, the structural strength and rigidity of the edge beam are increased, the battery pack is ensured to have an appropriate modal, the risk of deformation of the edge beam is reduced so as to extend the service life of the edge beam and the battery tray, and the battery pack has high impact protection capability and at the same time the battery pack is ensured to have an appropriate modal.

[0012] In some embodiments of the present disclosure, in a first direction of the edge beam, the first sub-cavity is located between the second sub-cavity and the placement slot.

[0013] In some embodiments of the present disclosure, the partition is connected obliquely between the upper wall and the lower wall of the cavity.

[0014] In some embodiments of the present disclosure, the partition is arranged to be inclined away from the placement slot in the direction from the upper end of the edge beam to the lower end.

[0015] In some embodiments of the present disclosure, both the cross-sectional shape of the first sub-cavity and the cross-sectional shape of the second sub-cavity are triangular or trapezoidal.

[0016] In some embodiments of the present disclosure, the edge beam is configured as an integrally formed component.

[0017] In some embodiments of the present disclosure, in the width direction of the edge beam, the cavity has a first side wall arranged apart from the placement slot. The first side wall is connected between the top wall and the bottom wall of the cavity, and the first side wall is connected to a partition.

[0018] In some embodiments of the present disclosure, the lower end of the first side wall is connected to a first connection that extends toward the interior of the cavity. The first connection is located on the side of the bottom wall of the cavity facing the top wall of the cavity, and the first side wall is connected to the partition and the bottom wall of the cavity through the first connection, and the first connection is fixedly connected to the bottom wall of the cavity.

[0019] In some embodiments of the present disclosure, the cavity has a second side wall near the placement slot. The second side wall is connected between the top wall and the bottom wall of the cavity, and the second side wall is connected to a partition.

[0020] In some embodiments of the present disclosure, the upper end of the second side wall is connected to a second connecting portion extending toward the interior of the cavity. The second connecting portion is located on the side of the upper wall of the cavity facing the lower wall of the cavity, and the second side wall is connected to the partition portion and the upper wall of the cavity through the second connecting portion, and the second connecting portion is fixedly connected to the upper wall of the cavity.

[0021] In some embodiments of the present disclosure, the edge beam further includes a support. The support is provided on the side of the edge beam body near the placement slot and is configured to support a battery core.

[0022] In some embodiments of the present disclosure, the lower end of the second side wall is connected to a support extending toward the placement slot, and the second side wall is connected to the bottom wall of the cavity through the support.

[0023] In some embodiments of the present disclosure, the second side wall is obliquely connected between the upper wall and the lower wall of the cavity, and the second side wall is arranged to be inclined toward the placement slot in the direction from the upper end to the lower end of the edge beam.

[0024] In some embodiments of the present disclosure, in the width direction of the edge beam, the bottom wall of the cavity has a structural reinforcement extending below the support, and the structural reinforcement is connected to the end portion of the support near the placement slot.

[0025] In some embodiments of the present disclosure, the structural reinforcement is provided with a boss that protrudes toward the support member (22), and the boss is connected to the support member.

[0026] In some embodiments of the present disclosure, in the width direction of the edge beam, the cavity has a first side wall arranged apart from the placement slot. The first side wall is connected between the top wall and the bottom wall of the cavity. The cavity has a second side wall close to the placement slot. The second side wall is connected between the top wall and the bottom wall of the cavity. The top wall of the cavity, the bottom wall of the cavity, the first side wall, and the second side wall together define the cavity, and the bottom wall of the cavity extends toward the placement slot to form a support configured to support a battery core.

[0027] A battery tray according to the present disclosure includes an edge beam for the battery tray as described above.

[0028] A battery tray according to the present disclosure comprises: a tray bottom plate—wherein the tray bottom plate comprises a bottom plate body and an extension, wherein the bottom plate body defines a placement slot for receiving a battery core, and the extension extends along the peripheral edge of the bottom plate body—; and a frame—wherein the frame comprises a side beam, a front beam, and a rear beam—the side beam is an edge beam. The side beam, the front beam, and the rear beam are connected to define a mounting space, and the bottom plate body is mounted in the mounting space. In the height direction of the battery tray, the extension is positioned on the frame and arranged on the frame. At least one of the side beam, the front beam, and the rear beam has a support extending toward the mounting space, and the support is configured to support the tray bottom plate.

[0029] A battery pack according to the present disclosure comprises: a battery core; a battery tray—wherein the battery tray is a battery tray as described above, the battery tray has a placement slot, and the battery core is accommodated in the placement slot.

[0030] A vehicle according to the present disclosure includes a battery pack as described above.

[0031] Additional aspects and advantages of the present disclosure will be described in part in the description below, some of which will become apparent from the following description or will be understood by the practice of the present disclosure. Brief explanation of the drawing

[0032] FIG. 1 is an exploded view of a battery pack according to one embodiment of the present disclosure. FIG. 2 is a cross-sectional view of a battery pack according to one embodiment of the present disclosure. Figure 3 is a magnified view of part A of Figure 2. FIG. 4 schematically illustrates an assembly of a battery tray and a battery core according to one embodiment of the present disclosure. FIG. 5 is a schematic diagram of a battery tray according to one embodiment of the present disclosure. FIG. 6 is an exploded view of a battery tray according to one embodiment of the present disclosure. FIG. 7 schematically illustrates a tray bottom plate of a battery tray according to one embodiment of the present disclosure. FIG. 8 schematically illustrates a frame of a battery tray according to one embodiment of the present disclosure. FIG. 9 schematically illustrates a side beam of a battery tray according to one embodiment of the present disclosure. Figure 10 is a magnified view of part B of Figure 9. FIG. 11 is a partial enlarged view of an assembly of a battery tray and a battery core according to one embodiment of the present disclosure. FIG. 12 is a cross-sectional view of an edge beam according to one embodiment of the present disclosure. FIG. 13 is a cross-sectional view of an edge beam according to another embodiment of the present disclosure. FIG. 14 is a schematic diagram of a vehicle according to one embodiment of the present disclosure. Specific details for implementing the invention

[0033] Detailed description of embodiments of the present disclosure will be provided below, and examples of embodiments are illustrated in the accompanying drawings. In the accompanying drawings, identical or similar elements or elements having identical or similar functions are indicated by identical or similar reference numerals throughout the detailed description. The embodiments described below with reference to the accompanying drawings are illustrative and are not intended to limit the present disclosure but are used solely for the purpose of interpreting the present disclosure.

[0034] An edge beam (23) for a battery tray (100) according to one embodiment of the present disclosure will be described below with reference to FIGS. 1 through 13. A plurality of edge beams (23) are connected within a frame (20) of the battery tray (100), and the frame (20) defines a mounting space (21). The battery tray (100) is applied to a battery pack (200), and the battery tray (100) has a tray bottom plate (10) for supporting a battery core (201). The edge beam (23) is connected to the tray bottom plate (10). The battery tray (100) has a placement slot (111) for receiving a battery core (201).

[0035] As illustrated in FIGS. 1 to 13, an edge beam (23) according to an embodiment of the present disclosure includes an edge beam body (231). The edge beam body (231) defines a cavity (2311), and the edge beam body (231) has a partition section (232). The partition section (232) is located within the cavity and is connected between the upper wall (233) of the cavity (2311) and the lower wall (234) of the cavity (2311). The partition section (232) divides the cavity (2311) into a first sub-cavity (2351) and a second sub-cavity (2352). The first sub-cavity (2351) and the second sub-cavity (2352) are arranged sequentially in a first direction of the edge beam (23). The first direction of the edge beam (23) refers to the width direction of the edge beam (23), the width direction of the battery tray (100), or the length direction of the battery tray (100). When the battery tray (100) is arranged in a pattern as shown in FIG. 11, the width direction of the edge beam (23) refers to the left-right direction as shown in FIG. 11. It will be understood that the partition (232) can divide the cavity (2311) into a plurality of sub-cavities (235) when connected between the upper wall (233) of the cavity (2311) and the lower wall (234) of the cavity (2311). When the partition part (232) divides the cavity (2311) into two sub-cavities (235), the two sub-cavities (235) are each a first sub-cavity (2351) and a second sub-cavity (2352). When the partition part (232) divides the cavity (2311) into four sub-cavities (235), the four sub-cavities (235) are arranged sequentially in the first direction of the edge beam (23). Two adjacent sub-cavities (235) form the first sub-cavity (2351), and the other two adjacent sub-cavities (235) form the second sub-cavity (2352).When the partition portion (232) divides the cavity (2311) into six sub-cavities (235), the six sub-cavities (235) are arranged sequentially in the first direction of the edge beam (23). Three adjacent sub-cavities (235) form a first sub-cavity (2351), and the other three adjacent sub-cavities (235) form a second sub-cavity (2352), and so on. The present disclosure will be described with an example in which the partition portion (232) divides the cavity (2311) into two sub-cavities (235).

[0036] The first sub-cavity (2351) has a cross-sectional area of ​​S1, and the second sub-cavity (2352) has a cross-sectional area of ​​S2, and S1 and S2 are related by: 0.8 <S1 / S2<1을 충족시키며, 나아가 0.8<S1 / S2<0.99를 충족시킨다. 제1 서브-캐비티(2351)의 단면적은 에지 빔(23)의 폭 방향으로의 단면적, 즉, 에지 빔(23)의 길이 방향에 수직인 제1 서브-캐비티(2351)의 단면의 면적을 의미한다. 제2 서브-캐비티(2352)의 단면적은 에지 빔(23)의 폭 방향으로의 단면적, 즉, 에지 빔(23)의 길이 방향에 수직인 제2 서브-캐비티(2352)의 단면의 면적을 의미한다. 캐비티(2311)를 파티션부(232)에 의해 제1 서브-캐비티(2351) 및 제2 서브-캐비티(2352)로 분할함으로써, 에지 빔(23)의 구조적 강도 및 강성도가 증가되고 에지 빔(23)의 변형 위험성이 감소되어 에지 빔(23)과 배터리 트레이(100)의 서비스 수명을 연장한다. 배터리 트레이(100)의 장착 공간(21)으로부터 떨어져 있는 제1 서브-캐비티(2351) 및 제2 서브-캐비티(2352) 중 하나의 캐비티(235)가 충격을 받을 때, 충격을 받은 서브-캐비티(235)는 충격력을 흡수할 수 있고 이는 배터리 팩(200)의 내부로 전달되는 충격력을 감소시키며, 배터리 팩(200) 내의 배터리 코어(201)의 손상 위험성을 감소시켜서 그에 따라 사용 동안 배터리 팩(200)의 안전성을 개선한다. 또한, 0.8<S1 / S2<1일 때, 배터리 팩(200)은 적절한 모달을 갖는 것이 보장되고, 배터리 팩(200)의 공진 확률이 감소될 수 있으며, 배터리 팩(200)은 높은 충격 보호 능력을 가질 수 있으면서 동시에 배터리 팩(200)은 적절한 모달을 갖는 것이 보장되어 배터리 팩(200)은 전체 팩의 모달과 차량의 충격 보호 사이의 밸런스를 달성할 수 있다.In some embodiments of the present disclosure, the partition (232) is obliquely connected between the upper wall (233) of the cavity (2311) and the lower wall (234) of the cavity (2311). By obliquely connecting the partition (232) between the upper wall (233) of the cavity (2311) and the lower wall (234) of the cavity (2311), the partition (232) is securely supported between the upper wall (233) of the cavity (2311) and the lower wall (234) of the cavity (2311), thereby increasing the structural strength and rigidity of the edge beam body (231), increasing the structural stability of the edge beam body (231), and reducing the risk of deformation of the edge beam (23), thereby extending the service life of the edge beam (23) and the battery tray (100).

[0037] In some embodiments of the present disclosure, as illustrated in FIG. 12, in a first direction of the edge beam (23), the first sub-cavity (2351) may be located between the second sub-cavity (2352) and the placement slot (111), or the first sub-cavity (2351) may be considered to be located between the mounting space (21) of the battery tray (100) and the second sub-cavity (2352). When the edge beam (23) is arranged in a pattern as illustrated in FIG. 12, the placement slot (111) is on the left side of the edge beam (23), the sub-cavity (235) on the left side is the first sub-cavity (2351), and the sub-cavity (235) on the right side is the second sub-cavity (2352). By arranging the first sub-cavity (2351) and the second sub-cavity (2352) sequentially in the width direction of the edge beam (23), when a cavity (235) among the plurality of cavities (235) separated from the placement slot (111) is impacted, that is, when the second sub-cavity (2352) on the right side in FIG. 12 is impacted, the impacted second sub-cavity (2352) can absorb the impact force, which reduces the impact force transmitted into the interior of the battery pack (200) and reduces the risk of damage to the battery core (201) inside the battery pack (200), thereby improving the safety of the battery pack (200) during use.

[0038] In the battery pack (200), the cross-sectional area of ​​the sub-cavity (235) near the placement slot (111) significantly affects the modality of the battery pack (200), that is, the cross-sectional area of ​​the first sub-cavity (2351) significantly affects the modality of the battery pack (200). As the cross-sectional area S1 of the first sub-cavity (2351) increases, the rigidity of the battery pack (200) deteriorates, the modality of the battery pack (200) decreases, and the resonance probability of the battery pack (200) increases. The cross-sectional area of ​​the sub-cavity (235) away from the placement slot (111) significantly affects the impact protection of the vehicle, that is, the cross-sectional area of ​​the second sub-cavity (2352) significantly affects the impact protection of the vehicle. As the cross-sectional area S2 of the second sub-cavity (2352) increases, the pressurized area of ​​the second sub-cavity (2352) becomes smaller, the energy that the energy beam (23) can absorb during a collision with the vehicle and an external force becomes smaller, and the risk of collision safety increases. Therefore, 0.8 <S1 / S2<1일 때, 배터리 팩(200)은 적절한 모달을 갖는 것이 보장되고, 배터리 팩(200)의 공진 확률이 감소될 수 있으며, 배터리 팩(200)은 높은 충격 보호 능력을 가질 수 있으면서 동시에 배터리 팩(200)은 적절한 모달을 갖는 것이 보장되어 배터리 팩(200)은 전체 팩의 모달과 차량의 충격 보호 사이의 밸런스를 달성할 수 있다.

[0039] In some embodiments of the present disclosure, as illustrated in FIG. 11 and FIG. 12, when the edge beam (23) is arranged in a pattern as illustrated in FIG. 11, the partition portion (232) may be considered to be arranged at an angle so as to be away from the placement slot (111) in the direction from the upper end of the edge beam (23) to the lower end, or the partition portion (232) may be considered to be arranged at an angle so as to be away from the mounting space (21) of the battery tray (100), or the partition portion (232) may be considered to be arranged to be extended obliquely so as to be away from the placement slot (111) in the up-down direction of the battery tray (100). The partition portion (232) divides the cavity (2311) into a first sub-cavity (2351) and a second sub-cavity (2352). Through this arrangement, the structural strength and rigidity of the edge beam (23) are increased and the stability of the edge beam (23) is improved, thereby improving the ability of the edge beam (23) to support the battery core (201) and further reducing the risk of deformation of the frame (20).

[0040] In some embodiments of the present disclosure, the partition (232) is vertically connected between the upper wall (233) of the cavity (2311) and the lower wall (234) of the cavity (2311). Through this arrangement, the partition (232) is securely supported between the upper wall (233) of the cavity (2311) and the lower wall (234) of the cavity (2311), the structural strength of the edge beam (23) is increased, and the structural stability of the edge beam (23) is improved, thereby improving the ability of the edge beam (23) to support the battery core (201) and further reducing the risk of deformation of the frame (20).

[0041] In some embodiments of the present disclosure, as shown in FIGS. 11 and 12, both the cross-sectional shape of the first sub-cavity (2351) and the cross-sectional shape of the second sub-cavity (2352) are triangular or trapezoidal. Through this arrangement, the structural stability of the edge beam (23) is increased and the risk of deformation of the edge beam (23) is further reduced, thereby extending the service life of the edge beam (23) and the battery tray (100).

[0042] According to a specific embodiment of the present disclosure, the first sub-cavity (2351) is located on the side of the second sub-cavity (2352) near the mounting space (21). The cross-sectional shape of the first sub-cavity (2351) is triangular, and furthermore, isosceles triangle or equilateral triangle. The bottom wall (234) of the cavity (2311) serves as the bottom wall of the triangle. Through this arrangement, the structural stability of the edge beam (23) is further increased and the risk of deformation of the edge beam (23) is further reduced, thereby extending the service life of the edge beam (23) and the battery tray (100).

[0043] In some optional embodiments, the angle between the bottom wall (234) of the cavity (2311) and the partition (232) serves as the base angle of the triangle. The base angle is β1 that satisfies the relationship: 50° ≤ β1 ≤ 70°. For example, β1 is 60°. Through this arrangement, the structural stability of the edge beam (23) is further increased and the risk of deformation of the edge beam (23) is further reduced, thereby extending the service life of the edge beam (23) and the battery tray (100).

[0044] In some optional embodiments, the vertex angle of the triangle is α1, satisfying the relationship: 50° ≤ α1 ≤ 70°. For example, α1 is 60°. In this way, the cross-sectional shape of the first sub-cavity (2351) is arranged to be an equilateral triangle. Through this arrangement, the structural stability of the edge beam (23) is further increased and the risk of deformation of the edge beam (23) is further reduced, thereby extending the service life of the edge beam (23) and the battery tray (100).

[0045] According to another specific embodiment of the present disclosure, as illustrated in FIGS. 11 and 12, a first sub-cavity (2351) is located on the side of a second sub-cavity (2352) near a placement slot (111) in the width direction of the edge beam (23). The cross-sectional shape of the first sub-cavity (2351) is arranged in a trapezoidal shape. Additionally, the bottom wall (234) of the cavity (2311) serves as the bottom wall of the trapezoidal shape. The angle between the bottom wall (234) of the cavity (2311) and the partition (232) serves as the base angle of the trapezoidal shape of the first sub-cavity (2351). The base angle is β2 satisfying the relationship: 50° ≤ β2 ≤ 70°. For example, β2 is 60°. Through this arrangement, the structural stability of the edge beam (23) is further increased and the risk of deformation of the edge beam (23) is further reduced, thereby extending the service life of the edge beam (23) and the battery tray (100).

[0046] In some optional embodiments, as shown in FIG. 12, the angle between the two waist portions of the trapezoidal shape of the first sub-cavity (2351) is α2, satisfying the relationship: 50° ≤ α2 ≤ 70°. For example, α2 is 60°. Through this arrangement, the structural stability of the edge beam (23) is further increased and the risk of deformation of the edge beam (23) is further reduced, thereby extending the service life of the edge beam (23) and the battery tray (100).

[0047] In some embodiments of the present disclosure, as illustrated in FIG. 12, the cross-sectional shape of the second sub-cavity (2352) is arranged in a trapezoidal shape. The bottom wall (234) of the cavity (2311) serves as the top wall of the trapezoidal shape of the second sub-cavity (2352), and the top wall (233) of the cavity (2311) serves as the bottom wall of the trapezoidal shape of the second sub-cavity (2352). Through this arrangement, the structural stability of the edge beam (23) is further increased and the risk of deformation of the edge beam (23) is further reduced, thereby extending the service life of the edge beam (23) and the battery tray (100).

[0048] In some embodiments of the present disclosure, the edge beam body (231) also has a support (22) extending toward the placement slot (111) of the battery tray (100). The support (22) is located below the tray bottom plate (10) and is configured to support the battery core (201) within the tray bottom plate (10). The edge beam (23) primarily supports the weight of the battery core (201). The tray bottom plate (10) of the battery tray (100) supports a small portion of the weight of the battery core (201), which significantly reduces the weight-bearing requirement for the tray bottom plate (10).

[0049] In some embodiments of the present disclosure, as illustrated in FIGS. 12 and 13, the edge beam (23) is constructed as an integrally formed component. Additionally, the edge beam (23) may be formed from an aluminum material, or the edge beam (23) may be formed from a steel material, and this is not limited in the present disclosure. The edge beam (23) may also be made of other metal materials having the same function as steel. For example, the edge beam (23) is made of a steel material. The edge beam (23) may be rolled from a steel material, or the edge beam (23) may also be extruded from a steel material. By constructing the edge beam (23) as an integrally formed component, the weight-bearing capacity of the edge beam (23) is improved and the risk of deformation of the edge beam (23) is reduced. The edge beam (23), made of steel material, can withstand high temperatures of 1500°C or higher, which ensures the integrity of the edge beam (23) during thermal runaway of the battery core (201).

[0050] According to one embodiment of the present disclosure, as illustrated in FIG. 10 and FIG. 11, the cavity (2311) has a first side wall (236) arranged apart from the placement slot (111) in the width direction of the edge beam (23). The first side wall (236) is connected between the upper wall (233) of the cavity (2311) and the lower wall (234) of the cavity (2311), and the first side wall (236) is connected to a partition portion (232). In some optional embodiments, as illustrated in FIG. 11, the lower end of the first side wall (236) is connected to a first connecting portion (238) extending toward the interior of the cavity (2311). The first connecting part (238) is located on the side of the bottom wall (234) of the cavity (2311) facing the top wall (233) of the cavity (2311), and the first side wall (236) is connected to the partition part (232) and the bottom wall (234) of the cavity (2311) through the first connecting part (238), and the first connecting part (238) is fixedly connected to the bottom wall (234) of the cavity (2311). For example, the first connecting part (238) is welded to the bottom wall (234) of the cavity (2311). Through this arrangement, the structural strength of the edge beam (23) is further increased, and the stability of the edge beam (23) is further improved.

[0051] In some optional embodiments, as shown in FIG. 10 and FIG. 11, the cavity (2311) has a second side wall (237) near the placement slot (111) in the width direction of the edge beam (23). The second side wall (237) is connected between the top wall (233) of the cavity (2311) and the bottom wall (234) of the cavity (2311), and the second side wall (237) is connected to a partition (232). In some optional embodiments, as shown in FIG. 11, the upper end of the second side wall (237) is connected to a second connection (239) extending toward the interior of the cavity (2311). The second connecting part (239) is located on the side of the upper wall (233) of the cavity (2311) facing the lower wall (233) of the cavity (2311), and the second side wall (237) is connected to the partition part (232) and the upper wall (233) of the cavity (2311) through the second connecting part (239), and the second connecting part (239) is fixedly connected to the upper wall (234) of the cavity (2311). For example, the second connecting part (239) is welded to the upper wall (233) of the cavity (2311). The upper wall (233) of the cavity (2311), the lower wall (234) of the cavity (2311), the first side wall (236), and the second side wall (237) together define the cavity (2311). Through this arrangement, the structural strength of the edge beam (23) is further increased, and the stability of the edge beam (23) is further improved.

[0052] In some optional embodiments, as illustrated in FIGS. 10 and 11, the edge beam (23) includes a support member (22). The support member (22) is provided on the side of the edge beam body (231) near the placement slot (111), and the support member (22) is configured to support the battery core (201). That is, the edge beam body (231) is connected to the support member (22) extending toward the placement slot (111). The support member (22) is configured to support the battery core (201) within the tray bottom plate (10) of the battery tray (100). The support member (22) supports the lower surface of the tray bottom plate (10) to support the battery core (201). The edge beam (23) supports most of the weight of the battery core (201). The tray bottom plate (10) of the battery tray (100) does not support the weight of the battery core (201) or supports only a small portion of the weight of the battery core (201), which significantly reduces the weight-supporting requirement for the tray bottom plate (10).

[0053] In some optional embodiments, the lower end of the second side wall (237) is connected to a support (22) extending toward the placement slot (111), and the support (22) may be configured to support the tray bottom plate (10), and the second side wall (237) is connected to the bottom wall (234) of the cavity (2311) through the support (22). In some optional embodiments, as shown in FIG. 12, the bottom wall (234) of the cavity (2311) has a structural reinforcement (2341) extending below the support (22) in the width direction of the edge beam (23). The structural reinforcement (2341) may be connected to the end portion of the support (22) near the tray bottom plate (10), or the structural reinforcement (2341) may be considered to extend below the support (22) and the end portion of the bottom wall (234) of the cavity (2311) near the placement slot (111) may be connected to the end portion of the structural reinforcement (2341) near the placement slot (111). Additionally, the structural reinforcement (2341) is provided with a boss (i.e., a boss structure (2391)) protruding toward the support (22), and the boss structure (2391) is connected to the support (22). Through this arrangement, the structural strength of the edge beam (23) is further increased, and the stability of the edge beam (23) is further improved.

[0054] In some optional embodiments, the structural reinforcement (2341) is provided with a plurality of boss structures (2391). The plurality of boss structures (2391) are arranged sequentially in the width direction of the edge beam (23). At least one of the plurality of boss structures (2391) is located below the battery core (201). This arrangement enables the boss structures (2391) to support the battery core (201), thereby further improving the weight-bearing capacity of the frame (20) and reducing the risk of deformation of the support (22).

[0055] According to another embodiment of the present disclosure, as illustrated in FIG. 13, the cavity (2311) has a first side wall (236) arranged apart from the placement slot (111) in the width direction of the edge beam (23). The first side wall (236) is connected between the top wall (233) of the cavity (2311) and the bottom wall (234) of the cavity (2311). The cavity (2311) has a second side wall (237) close to the placement slot (111). The second side wall (237) is connected between the top wall (233) of the cavity (2311) and the bottom wall (234) of the cavity (2311). The top wall (233) of the cavity (2311), the bottom wall (234) of the cavity (2311), the first side wall (236), and the second side wall (237) together define the cavity (2311). The bottom wall (234) of the cavity (2311) extends toward the placement slot (111) to form a support (22) configured to support the tray bottom plate (10). The support (22) is located below the tray bottom plate (10) and extends to a location below the battery core (201). This arrangement enables the support (22) to support the battery core (201), thereby further improving the weight-bearing capacity of the edge beam (23).

[0056] In some embodiments of the present disclosure, the second side wall (237) is connected obliquely between the upper wall (233) of the cavity (2311) and the lower wall (234) of the cavity (2311). In the direction from the upper end to the lower end of the edge beam (23), the second side wall (237) is arranged to be inclined toward the placement slot (111). Through this arrangement, the structural strength of the edge beam (23) is further increased and the stability of the edge beam (23) is further improved, thereby further improving the ability of the edge beam (23) to support the battery core (201) and further reducing the risk of deformation of the frame (20).

[0057] As illustrated in FIGS. 1 through 13, a battery tray (100) according to one embodiment of the present disclosure comprises: a tray bottom plate (10) (a tray bottom plate (10) according to the above embodiment) and a frame (20) (a frame (20) according to the above embodiment). The tray bottom plate (10) comprises a bottom plate body (11) and an extension (12). The bottom plate body (11) defines a placement slot (111) for receiving a battery core (201) or a battery module. In the present disclosure, the placement slot (111) is described as an example of receiving a battery core (201). The battery core (201) may be bonded to the placement slot (111) by a structural adhesive. In some optional embodiments, the placement slot (111) has a bottom wall (113) of the placement slot. The bottom wall (113) of the placement slot has a pressurized area (112) for supporting the battery core (201). The pressurized area (112) refers to an area where the orthographic projection of the bottom wall (113) of the placement slot overlaps with the orthographic projection of the battery core (201) in the height direction of the battery tray (100) when the battery core (201) is mounted in the placement slot (111). Alternatively, this may be considered as a contact area between the bottom wall (113) of the placement slot and the battery core (201) when the battery core (201) is mounted in the placement slot (111). The contact area includes an area where the battery core (201) is in direct or indirect contact with the bottom wall (113) of the placement slot. For example, the battery core (201) is in indirect contact with the bottom wall (113) of the placement slot when there is an adhesive or cooling structure between the battery core (201) and the bottom wall (113) of the placement slot, and the battery core (201) is in direct contact with the bottom wall (113) of the placement slot when there is no additional object between the battery core (201) and the bottom wall (113) of the placement slot.Alternatively, it may be considered that the area where the weight of the battery core (201) acts directly on the bottom wall (113) of the placement slot is the pressurized area (112). In the height direction of the battery tray (100), the orthographic projection of the bottom wall (113) of the placement slot is also a projection of the bottom wall (113) of the placement slot onto a plane perpendicular to the height direction of the battery tray (100). In the height direction of the battery tray (100), the orthographic projection of the battery core (201) is a projection of the battery core (201) onto a plane perpendicular to the height direction of the battery tray (100).

[0058] When the battery core (201) is mounted on the battery tray (100), the battery core (201) is positioned in the pressurized area (112) of the placement slot (111). The extension (12) is arranged to extend along the peripheral edge of the bottom plate body (11). Additionally, the extension (12) is configured as a loop structure. In particular, the extension (12) is configured as a closed-loop structure.

[0059] The frame (20) defines a mounting space (21), and the bottom plate body (11) is mounted on the frame (20). Additionally, the bottom plate body (11) is fixedly mounted on the frame (20). The bottom plate body (11) may be bonded to the frame (20), or the bottom plate body (11) may be connected to the frame (20) by bolts. The specific assembly method of the bottom plate body (11) and the frame (20) is not particularly limited and may be selected according to actual requirements. The bottom plate body (11) is mounted in the mounting space (21), and the extension (12) is located outside the mounting space (21). In the height direction of the battery tray (100), the extension (12) is located on the frame (20) and arranged on the frame (20).

[0060] In some embodiments of the present disclosure, as illustrated in FIGS. 6 and FIGS. 8, the frame (20) comprises a side beam, a front beam (24), and a rear beam (25). At least one of the side beam, the front beam (24), and the rear beam (25) is an edge beam (23) according to the above embodiments. The edge beam (23), the front beam (24), and the rear beam (25) are connected to define a mounting space (21). The connection of the side beam, the front beam (24), and the rear beam (25) includes direct connection and indirect connection. For example, the connection between the side beam and the front beam (24) is described. The side beam and the front beam (24) may be directly connected, or the side beam and the front beam (24) may be indirectly connected by an additional beam.

[0061] In some optional embodiments, the side beams and / or the front beam (24) and / or the rear beam (25) may have a support (22) extending toward the mounting space (21), or at least one of the side beams, the front beam (24) and the rear beam (25) may have a support (22) extending toward the mounting space (21). The support (22) is configured to support the tray bottom plate (10). Two side beams, one rear beam (25), and one front beam (24) are provided. When the frame (20) is arranged in a pattern as shown in FIG. 8, the two side beams are spaced apart in the left-right direction in FIG. 8, and the front beam (24) and the rear beam (25) are connected between the two side beams. The front beam (24) and the rear beam (25) are spaced apart in the front-rear direction of the frame (20). In this way, the front beam (24), the rear beam (25), and the two side beams together define a mounting space (21). When the battery core (201) is arranged to extend in a left-right direction as shown in FIG. 8, by arranging the support members (22) on the side beams, it is ensured that each battery core (201) is supported by the support members (22), which further ensures that the support members (22) support the battery core (201) and further ensures that the frame (20) is used primarily to support the weight of the battery core (201). Consequently, the arrangement of the positions of the support members (22) is reasonable. It can be understood that when the battery tray (100) is mounted on the vehicle (2000), the width direction of the battery tray (100) may coincide with the width direction of the vehicle, and the length direction of the battery tray (100) may coincide with the length direction of the vehicle. Of course, the width direction of the battery tray (100) may coincide with the length direction of the vehicle, and the length direction of the battery tray (100) may coincide with the width direction of the vehicle.

[0062] Additionally, the support member (22) is configured to support the pressure area (112) of the tray bottom plate (10). As illustrated in FIGS. 6, 8, and 11, the present disclosure describes the battery tray (100) arranged in an up-down direction as an example. After the bottom plate body (11) is mounted in the mounting space (21), the extension member (12) is arranged outside the mounting space (21). In the up-down direction of the battery tray (100), the extension member (12) is arranged corresponding to the frame (20). Specifically, as illustrated in FIG. 11, the extension member (12) is positioned on the frame (20) and is arranged to face the frame (20). In the up-down direction of the battery tray (100), the extension member (12) covers the entire upper surface of the frame (20).

[0063] As illustrated in FIG. 11, when the battery core (201) is mounted in the placement slot (111), the battery core (201) is positioned in the pressurized area (112), and the support member (22) supports the pressurized area (112). The weight of the battery core (201) is carried on the frame (20), and the frame (20) supports most of the weight of the battery core (201), while the tray bottom plate (10) does not support the weight of the battery core (201) or supports only a small portion of the weight of the battery core (201), which significantly reduces the weight-bearing requirement for the tray bottom plate (10). Accordingly, the tray bottom plate (10) may be made of materials having lower strength and smaller thickness. In some optional embodiments, the tray bottom plate (10) is composed of a non-metallic member. In some optional embodiments, the tray bottom plate (10) is composed of an insulating member. The tray bottom plate (10) may be formed from a lightweight non-metallic composite material. For example, the lightweight non-metallic composite material may be made of resin or glass fiber, wherein the resin may be epoxy resin or polyurethane, but is not limited in the present disclosure. The lightweight composite material may also be a composite material made of other resins and glass fibers and having the same function. Such arrangements can reduce the weight of the tray bottom plate (10), which is advantageous for the lightweight design of the battery tray (100) and battery pack (200). Conventional tray bottom plates (10) are made of aluminum material. In the present disclosure, the tray bottom plate (10) is formed from a non-metallic composite material, which reduces the production cost of the tray bottom plate (10) and facilitates the reduction of the production cost of the battery tray (100) and battery pack (200). It will be understood that the tray bottom plate (10) formed from a non-metallic composite material has excellent electrical insulation performance.When a serious scratching accident occurs on the vehicle (2000), the battery pack (200) will not have risks such as high-voltage arc formation.

[0064] In some optional embodiments, the tray bottom plate (10) is configured as an integrally formed component. The tray bottom plate (10) is molded from a lightweight non-metallic composite material. During the molding process, the battery bottom plate (10) has good airtightness formed after the resin is melted and flowed and then hardened, and the tray bottom plate (10) is ensured to have good flatness and dimensional accuracy by molding, thereby ensuring the sealing function of the tray bottom plate (10). The frame (20) can be formed by tailor-welding with metal. After tailor-welding, the strength of the welded structure and the required flatness of the product must be ensured. The tailor-welding efficiency is high, which improves the production efficiency of the battery tray (100). In addition, the tray bottom plate (10) is responsible for sealing; there is no need for weld grinding or airtightness testing, and there is no risk of seal failure caused by welding. The tray bottom plate (10) can be formed by molding from a composite material. The tray bottom plate (10) has high production efficiency and high mold precision, and thus high flatness can be obtained. Accordingly, the size requirements for the battery core (201) are reduced.

[0065] Additionally, conventional battery trays (100) do not divide the product structure for weight-bearing and sealing functions. In the production of battery trays (100), both the total weight-bearing capacity and sealing performance must meet requirements, which results in low manufacturing efficiency and yield of the battery trays (100). In the present disclosure, the weight-bearing function and the sealing function are divided. The frame (20) is primarily responsible for weight-bearing, and the tray bottom plate (10) is primarily responsible for sealing. This improves the manufacturing efficiency and yield of the battery trays (100).

[0066] Accordingly, the frame (20) primarily supports the weight of the battery core (201) and the tray bottom plate (10) supports only a small portion of the weight of the battery core (201); and through the cooperation of the tray bottom plate (10) and the frame (20), where the tray bottom plate (10) primarily handles the sealing, the thickness of the tray bottom plate (10) is reduced, and the tray bottom plate (10) can be formed from a lightweight composite material, which is advantageous for the lightweight design of the battery tray (100) and the battery pack (200) and for reducing production costs. After the tray bottom plate (10) and the frame (20) are assembled, there is no risk of sealing failure of the battery tray (100) caused by welding, and there is no need for grinding the welds of the battery tray (100) or airtightness testing, thereby improving the production efficiency of the battery tray (100).

[0067] In some embodiments of the present disclosure, the tray bottom plate (10) and the frame (20) are sealedly connected. The frame (20) is provided with a plurality of bolt holes (28), and the extension (12) is provided with a plurality of avoidance through holes (122), and the plurality of bolt holes (28) are arranged in a one-to-one correspondence with the plurality of avoidance through holes (122). A plurality of rivet nuts are embedded in the frame (20), and the plurality of rivet nuts are arranged in a one-to-one correspondence with the plurality of bolt holes (28). The rivet nuts extend through the escape through holes (122) and the bolt holes (28). The battery pack (200) includes a cover (40), and the cover (40) and the tray bottom plate (10) together define a receiving cavity (41) for receiving a battery core (201), and the cover (40) is connected to the frame (20). Additionally, the cover (40) covers the open end of the placement slot (111) to define the receiving cavity (41). The extension (12) is fitted between the cover (40) and the frame (20). The bolt extends through the cover (40), the avoidance through hole (122) of the extension (12), and the bolt hole (28) of the frame (20), and is connected to a rivet nut so that the cover (40), bottom plate (10), and frame (20) are assembled together. Through the sealing connection between the tray bottom plate (10) and the frame (20), a seal is formed between the bolt and the bolt hole (28), thereby improving the leak-tightness of the battery tray (100), preventing water vapor from flowing into the placement slot (111) through the bolt hole (28) on the frame (20), and also preventing the battery pack (200) from short-circuiting, thereby improving the safety of the battery pack (200) during use.

[0068] In some embodiments of the present disclosure, as illustrated in FIG. 11, the tray bottom plate (10) and the frame (20) are sealedly connected by a sealing structure (13). Additionally, the sealing structure (13) may be composed of a sealant, and the sealing structure (13) may be composed of a rubber member, which is not limited in the present disclosure. The sealing structure (13) may be composed of a sealing part having the same function as a sealant. The sealing structure (13) may be fitted into the entire space between the tray bottom plate (10) and the frame (20), or the sealing structure (13) may be fitted into a part of the space between the tray bottom plate (10) and the frame (20). The sealing structure (13) may be arranged to surround the bolt hole (28) and the avoidance through hole (122). Additionally, the sealing structure (13) may extend into the bolt hole (28) and the avoidance through hole (122). Through this arrangement, a sealed connection between the tray bottom plate (10) and the frame (20) can be made to effectively prevent water vapor from flowing into the receiving cavity (41) through the bolt holes (28) on the frame (20).

[0069] In some embodiments of the present disclosure, as illustrated in FIG. 11, a sealing structure (13) is provided between the extension (12) and the frame (20). Since an avoidance through hole (122) is provided in the extension (12), by providing a sealing structure (13) between the extension (12) and the frame (20), the sealing structure (13) can seal the bolt hole (28) and the avoidance through hole (122), thereby making the arrangement of the positions of the sealing structure (13) reasonable.

[0070] In some embodiments of the present disclosure, as illustrated in FIG. 11, when the battery tray (100) is arranged in a pattern as illustrated in FIG. 11, the orthographic projection of the support member (22) and the orthographic projection of the pressure area (112) have an overlapping area in the height direction of the battery tray (100). When the battery core (201) is received in the placement slot (111), this arrangement can ensure that the support member (22) supports the battery core (201) and that the frame (20) is primarily used to support the weight of the battery core (201).

[0071] In some embodiments of the present disclosure, the bottom wall (113) of the placement slot (111) is formed together with the pressurized area (112). Alternatively, it may be considered that the pressurized area (112) be provided on the bottom wall (113) of the placement slot (111). As illustrated in FIG. 11, when the battery tray (100) is arranged in the pattern as illustrated in FIG. 11, the support member (22) is located below the bottom plate body (11), and the support member (22) supports the bottom wall (113). This arrangement ensures that the support member (22) is located below and supports the pressurized area (112), which can further ensure that the support member (22) supports the battery core (201) and further ensure that the frame (20) is used primarily to support the weight of the battery core (201). Consequently, the arrangement of the location of the pressurized area (112) is reasonable.

[0072] In some embodiments of the present disclosure, as illustrated in FIG. 8, the frame (20) further comprises a support beam (26). The support beam (26) is connected between two edge beams (23), the support beam (26) is connected between a front beam (24) and a rear beam (25), the support beam (26) is connected between a front beam (24) and an edge beam (23), or the support beam (26) is connected between a rear beam (25) and an edge beam (23). This arrangement can improve the structural strength of the frame (20) and, accordingly, improve the structural strength of the battery tray (100).

[0073] In some embodiments of the present disclosure, as illustrated in FIGS. 5 and 6, the battery tray (100) further comprises an expansion beam (27). The expansion beam (27) is provided on the side of the tray bottom plate (10) separated from the frame (20). When the battery tray (100) is arranged in a pattern as illustrated in FIGS. 5 and 6, the expansion beam (27) is provided on the tray bottom plate (10), and the expansion beam (27) is mounted on the support beam (26) by bolts. After the battery core (201) is mounted in the placement slot (111), when the battery core (201) expands, the expansion beam (27) restrains the battery core (201) to improve the safety of the battery core (201) during use.

[0074] Additionally, a plurality of support beams (26) are provided. The plurality of support beams (26) are spaced apart sequentially along the length of the edge beam (23). The length of the edge beam (23) refers to the front-rear direction in FIG. 6. A plurality of expansion beams (27) are provided, and the plurality of expansion beams (27) are spaced apart sequentially along the length of the edge beam (23). The plurality of expansion beams (27) and the plurality of support beams (26) are arranged in a one-to-one correspondence, and one expansion beam (27) is mounted on one support beam (26) by a bolt to stably mount the expansion beam (27) on the frame (20).

[0075] In some embodiments of the present disclosure, as illustrated in FIG. 11, the support member (22) is provided near the lower end of the edge beam (23). Alternatively, it may be considered that the support member (22) is provided near the end portion of the edge beam (23) away from the tray bottom plate (10). After the bottom plate body (11) is mounted in the mounting space (21), by providing the support member (22) near the end portion of the edge beam (23) away from the tray bottom plate (10), it is ensured that the support member (22) is positioned below and supports the bottom plate body (11), and that the bottom plate body (11) is mounted in the mounting space (21).

[0076] In some embodiments of the present disclosure, as illustrated in FIGS. 5 through 7 and FIG. 11, when the battery tray (100) is arranged in a pattern as illustrated in FIG. 11, the upper end of the placement slot (111) is arranged to be open, and the battery core (201) can be positioned in the placement slot (111) through the open end of the placement slot (111). An extension (12) is arranged to extend along the peripheral edge from the open end of the placement slot (111). As illustrated in FIG. 11, the extension (12) is connected to the upper end of the bottom plate body (11). After the bottom plate body (11) is mounted in the mounting space (21), this arrangement makes it possible for the extension (12) to be provided outside the placement slot (111) and ensures that the extension (12) is arranged in the up-down direction of the battery tray (100) in correspondence with the frame (20), thereby ensuring the sealing of the battery tray (100).

[0077] In some embodiments of the present disclosure, as shown in FIG. 8, FIG. 10 and FIG. 11, the surface of the support member (22) near the tray bottom plate (10) is configured as a flat surface. In other words, as shown in FIG. 11, the upper surface of the support member (22) is a flat surface, and this arrangement can ensure a support area between the support member (22) and the bottom plate body (11) and can enable the support member (22) to support the battery core (201) well.

[0078] In some embodiments of the present disclosure, the support member (22) is located below the bottom plate body (11) and is fixedly connected to the bottom plate body (11). In some optional embodiments, the tray bottom plate (10) is bonded to the frame (20). Additionally, the support member (22) and the bottom plate body (11) are bonded by applying an adhesive (e.g., a structural adhesive) between the tray bottom plate (10) and the frame (20). Dimensional tolerances of the frame (20) are absorbed by controlling the thickness of the adhesive. Additionally, the tray bottom plate (10) has good flatness, and manufacturing requirements for the tray bottom plate (10) and the frame (20) are reduced by utilizing the properties of the adhesive that can absorb tolerances. Additionally, when the existing tray bottom plate (10) and frame (20) are welded, the tray bottom plate (10) tends to deform during the welding process, which increases the size requirements for the battery core (201) during the subsequent assembly process of the battery pack (200) and affects the assembly efficiency of the battery pack (200). In the present disclosure, the tray bottom plate (10) and the frame (20) are bonded to avoid a welded connection between the tray bottom plate (10) and the frame (20). This prevents deformation of the tray bottom plate (10), reduces the size requirements for the battery core (201) during the subsequent assembly process of the battery pack (200), and can improve the assembly efficiency of the battery pack (200).

[0079] In some embodiments of the present disclosure, the tray bottom plate (10) is configured as an integrally formed component. The tray bottom plate (10) is molded from a lightweight composite material. During the molding process, the battery bottom plate (10) has good airtightness formed after the resin is melted and flowed and then hardened, and the tray bottom plate (10) is ensured to have good flatness and dimensional accuracy by molding, thereby ensuring the sealing function of the tray bottom plate (10).

[0080] In some embodiments of the present disclosure, the frame (20) is constructed as a metal piece, and the frame (20) may be formed of aluminum material or the frame (20) may be formed of steel material, and this is not limited to the present disclosure. The frame (20) may also be made of other metal materials having the same function as steel. For example, the frame (20) is made of steel material, wherein the frame (20) may be rolled from steel material or the frame (20) may be extruded from steel material. By constructing the frame (20) as a metal member, the weight-bearing capacity of the frame (20) may be improved and the risk of deformation of the frame (20) may be reduced.

[0081] In some embodiments of the present disclosure, as shown in FIGS. 5 and 6, the frame (20) is connected to a lifting lug structure (30). The lifting lug structure (30) is provided with a mounting hole, and the lifting lug structure (30) is mounted on the vehicle (2000) by a fastener (e.g., a bolt) to achieve the purpose of mounting a battery pack (200) on the vehicle (2000).

[0082] As illustrated in FIGS. 1 through 11, a battery pack (200) according to an embodiment of the present disclosure comprises a battery core (201), a battery tray (100), and a cover (40). The battery tray (100) is a battery tray (100) according to the above embodiment. The battery tray (100) has a placement slot (111), and the battery core (201) is received in the placement slot (111). The cover (40) and the tray bottom plate (10) together define a receiving cavity (41) for receiving the battery core (201), and the cover (40) is connected to the frame (20). Additionally, the cover (40) covers the open end of the placement slot (111) to define the receiving cavity (41). An extension (12) is fitted between the cover (40) and the frame (20). A bolt extends through the cover (40). The cover (40), the tray bottom plate (10), and the frame (20) are assembled together by the extension (12) and the frame (20). Additionally, a sealing part (203) (e.g., a sealing ring) is inserted between the extension (12) and the cover (40), and the sealing part (203) seals the receiving cavity (41). The cover (40) and the tray bottom plate (10) define a sealed insulating cavity (i.e., the receiving cavity (41)). After the battery core (201) is positioned in the receiving cavity (41), the battery core (201) is completely isolated from the frame (20), so the battery core (201) is in a completely insulated environment, and the battery pack (200) has no risk of short circuit.

[0083] In some embodiments of the present disclosure, as illustrated in FIG. 1, the battery bag (200) further comprises: a press plate (202). The press plate (202) is configured as a closed ring structure. A cover (40), a seal (203), and an extension (12) are fitted between the press plate (202) and the frame (20). A bolt extends through the press plate (202), the cover (40), the extension (12), and the frame (20) to assemble the press plate (202), the cover (40), the tray bottom plate (10), and the frame (20) together. The press plate (202) enables the entire seal (203) to be pressed uniformly and ensures a secure seal of the receiving cavity (41).

[0084] As illustrated in FIG. 14, a vehicle (2000) according to an embodiment of the present disclosure includes a battery pack (200) according to the above embodiment. The battery pack (200) is mounted on the vehicle (2000) to provide electrical energy to the vehicle (2000). The frame (20) of the battery pack (200) supports most of the weight of the battery core (201), and the tray bottom plate (10) supports only a small portion of the weight of the battery core (201). The tray bottom plate (10) is primarily responsible for sealing. The tray bottom plate (10) may be formed of a lightweight composite material, which is advantageous for the lightweight design of the battery tray (100), the battery pack (200), and the vehicle (2000), and for reducing the production cost thereof. After the tray bottom plate (10) and the frame (20) are assembled, there is no risk of poor sealing of the battery tray (100) caused by welding, and there is no need for grinding the welds of the battery tray (100) or testing for airtightness, which improves the production efficiency of the battery tray (100) and the vehicle (2000). In addition, the tray bottom plate (10) formed of a composite material has excellent electrical insulation performance. When a serious scratching accident occurs to the vehicle (2000), the battery pack (200) will not have risks such as high-voltage arc formation, and thus the safety of the vehicle (2000) is improved.

[0085] In the description of this specification, descriptions relating to terms such as “one embodiment,” “some embodiments,” “exemplary embodiments,” “examples,” “specific examples,” or “some examples” mean that specific features, structures, materials, or properties described in relation to an embodiment or example are included in at least one embodiment or example of this disclosure. In the specification, exemplary descriptions of the foregoing terms do not necessarily represent the same embodiment or example. Furthermore, the specific features, structures, materials, or properties described may be combined in an appropriate manner in any one or more of the embodiments or examples.

[0086] Although embodiments of the present disclosure have been described and illustrated above, those skilled in the art will understand that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the present disclosure, and that the scope of the present disclosure is defined by the appended claims and their equivalents.

Claims

Claim 1 As an edge beam (23) for a battery tray (100), the battery tray (100) has a placement slot (111) for receiving a battery core (201), and the edge beam (23) comprises an edge beam body (231) - the edge beam body (231) defines a cavity (2311), the edge beam body (231) has a partition section (232), the partition section (232) is located in the cavity (2311), and the partition section (232) is connected between the upper wall (233) and the lower wall (234) of the cavity (2311) to divide the cavity (2311) into a first sub-cavity (2351) and a second sub-cavity (2352), and the first sub-cavity (2351) and the second The sub-cavities (2352) are arranged sequentially in the first direction of the edge beam (23), the first sub-cavity (2351) has a cross-sectional area of ​​S1, and the second sub-cavity (2352) has a cross-sectional area of ​​S2, and S1 and S2 are related by the equation: 0.8<S1 / S2<1을 충족시킴 - 를 포함하며, 상기 에지 빔(23)의 상기 제1 방향은 상기 에지 빔(23)의 폭 방향이고,상기 에지 빔(23)의 폭 방향으로, 상기 캐비티(2311)는 상기 배치 슬롯(111)으로부터 떨어져 배열된 제1 측벽(236)을 가지며, 상기 제1 측벽(236)은 상기 캐비티(2311)의 상기 상단 벽(233)과 상기 하단 벽(234) 사이에 연결되고, 상기 제1 측벽(236)은 상기 파티션부(232)에 연결되고,상기 제1 측벽(236)의 하부 단부는 상기 캐비티(2311)의 내부를 향해 연장되는 제1 연결부(238)와 연결되고, 상기 제1 연결부(238)는 상기 캐비티(2311)의 상기 상단 벽(233)과 마주보는 상기 캐비티(2311)의 상기 하단 벽(234)의 사이드(side)에 위치되며, 상기 제1 측벽(236)은 상기 제1 연결부(238)를 통해 상기 파티션부(232) 및 상기 캐비티(2311)의 상기 하단 벽(234)에 연결되고, 상기 제1 연결부(238)는 상기 캐비티(2311)의 상기 하단 벽(234)에 고정적으로 연결되며,상기 에지 빔(23)의 상기 제1 방향으로, 상기 제1 서브-캐비티(2351)는 상기 제2 서브-캐비티(2352)와 상기 배치 슬롯(111) 사이에 위치되고,상기 에지 빔(23)은 일체로 형성된 컴포넌트로서 구성되는, 배터리 트레이(100)에 대한 에지 빔(23). Claim 2 In claim 1, the partition portion (232) is an edge beam (23) for the battery tray (100) that is obliquely connected between the upper wall (233) and the lower wall (234) of the cavity (2311). Claim 3 In paragraph 2, the edge beam (23) for the battery tray (100) is inclined such that, in the direction from the upper end to the lower end of the edge beam (23), the partition portion (232) is inclined away from the placement slot (111). Claim 4 An edge beam (23) for a battery tray (100), wherein both the cross-sectional shape of the first sub-cavity (2351) and the cross-sectional shape of the second sub-cavity (2352) are triangular or trapezoidal. Claim 5 In claim 1, the cavity (2311) has a second side wall (237) close to the placement slot (111), the second side wall (237) is connected between the upper wall (233) and the lower wall (234) of the cavity (2311), and the second side wall (237) is connected to the partition portion (232), an edge beam (23) for the battery tray (100). Claim 6 In claim 5, the upper end of the second side wall (237) is connected to a second connecting part (239) extending toward the interior of the cavity (2311), the second connecting part (239) is located on the side of the upper wall (233) of the cavity (2311) facing the lower wall (234) of the cavity (2311), the second side wall (237) is connected to the upper wall (233) and the partition part (232) through the second connecting part (239) of the cavity (2311), and the second connecting part (239) is fixedly connected to the upper wall (233) of the cavity (2311), an edge beam (23) for a battery tray (100). Claim 7 In claim 6, the edge beam (23) further comprises a support member (22), the support member (22) is provided on the side of the edge beam body (231) near the placement slot (111), and the support member (22) is configured to support the battery core (201), the edge beam (23) for the battery tray (100). Claim 8 In claim 7, the lower end of the second side wall (237) is connected to the support member (22) extending toward the placement slot (111), and the second side wall (237) is connected to the lower wall (234) of the cavity (2311) through the support member (22), an edge beam (23) for the battery tray (100). Claim 9 In claim 5, the second side wall (237) is obliquely connected between the upper wall (233) and the lower wall (234) of the cavity (2311), and the second side wall is arranged to be inclined toward the placement slot (111) in the direction from the upper end of the edge beam (23) to the lower end, for the edge beam (23) of the battery tray (100). Claim 10 In claim 8, the bottom wall (234) of the cavity (2311) in the width direction of the edge beam has a structural reinforcement (2341) extending below the support (22), and the structural reinforcement (2341) is connected to the end portion of the support (22) near the placement slot (111), the edge beam (23) for the battery tray (100). Claim 11 In item 10, the structural reinforcement member (2341) has a boss protruding toward the support member (22), and the boss is connected to the support member (22), an edge beam (23) for the battery tray (100). Claim 12 In claim 1, in the width direction of the edge beam (23), the cavity (2311) has a first side wall (236) arranged apart from the placement slot (111), the first side wall (236) is connected between the upper wall (233) and the lower wall (234) of the cavity (2311), the cavity (2311) has a second side wall (237) close to the placement slot (111), the second side wall (237) is connected between the upper wall (233) and the lower wall (234) of the cavity (2311), and the upper wall (233) of the cavity (2311), the lower wall (234) of the cavity (2311), the first side wall (236), and the second side wall (237) together form the cavity (2311). Defined, the lower wall (234) of the cavity (2311) is an edge beam (23) for the battery tray (100) extending toward the placement slot (111) to form a support (22) configured to support the battery core (201). Claim 13 A battery tray (100) comprising an edge beam (23) for a battery tray (100) according to any one of claims 1 to 12. Claim 14 In paragraph 13, a tray bottom plate (10) - the tray bottom plate (10) comprises a bottom plate body (11) and an extension (12), the bottom plate body (11) defines a placement slot (111) for accommodating a battery core (201), and the extension (12) extends along the peripheral edge of the bottom plate body (11) -; A battery tray (100) comprising: a frame (20) - the frame (20) includes a side beam, a front beam (24), and a rear beam (25), at least one of the side beam, the front beam (24), and the rear beam (25) is an edge beam (23), the side beam, the front beam (24), and the rear beam (25) are connected to form a mounting space (21), the bottom plate body (11) is mounted in the mounting space (21), and in the height direction of the battery tray (100), the extension (12) is positioned on the frame (20) and arranged on the frame (20), and at least one of the side beam, the front beam (24), and the rear beam (25) has a support (22) extending toward the mounting space, and the support (22) is configured to support the tray bottom plate (10). Claim 15 A battery pack (200) comprising a battery core (201) and a battery tray (100) according to claim 13, wherein the battery tray (100) has a placement slot (111), and the battery core (201) is accommodated in the placement slot (111). Claim 16 A vehicle (2000) including the above battery pack (200) according to paragraph 15. Claim 17 delete Claim 18 delete Claim 19 delete Claim 20 delete

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