Edge beam for battery pack, battery pack and electric equipment

Abstract

The utility model discloses an edge beam for a battery pack, the battery pack and electric equipment. The edge beam for the battery pack comprises an edge beam body and an anti-collision piece, the edge beam body is provided with a repair opening, and the repair opening penetrates through the edge beam body in the thickness direction of the edge beam body. The anti-collision piece is connected to the surface of one side of the edge beam body in the thickness direction, and the anti-collision piece is located on one side of the repair opening in the width direction of the edge beam body. According to the edge beam for the battery pack disclosed by the utility model, the edge beam for the battery pack is provided with a protection structure for the repair port, so that the edge beam is high in structural strength and good in impact resistance, and the sealing property and the safety of the battery pack can be ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a side beam for a battery pack, a battery pack and an electrical equipment. Background Art

[0002] In the related art, a repair opening is provided on the side beam of the battery pack to facilitate the repair, inspection or replacement of internal components of the battery pack. The repair opening is generally sealed by compressing a silicone rubber ring. Since the sealing compression amount of the silicone rubber ring is very small, even a slight deformation of the repair opening will cause the sealing at the repair opening to fail, greatly affecting the sealing performance and safety of the battery pack. Summary of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a side beam for a battery pack, and the side beam for the battery pack is provided with a protection structure for the repair opening, which has high structural strength and good impact resistance, and can ensure the sealing performance and safety of the battery pack.

[0004] The utility model also provides a battery pack, and the battery pack includes the above-mentioned side beam for the battery pack.

[0005] The utility model also provides an electrical equipment, and the electrical equipment includes the above-mentioned battery pack.

[0006] The side beam for a battery pack according to an embodiment of the utility model includes: a side beam body and a collision prevention member. A repair opening is provided on the side beam body, and the repair opening penetrates the side beam body in the thickness direction of the side beam body; the collision prevention member is connected to one surface of the side beam body in the thickness direction, and along the width direction of the side beam body, the collision prevention member is located on one side of the repair opening.

[0007] According to the side beam for a battery pack of the embodiment of the utility model, by providing a repair opening on the side beam body and connecting the collision prevention member to one surface of the side beam body in the thickness direction and located on one side of the repair opening along the width direction of the side beam body, the collision prevention member can play a role of blocking and preventing collision, and can absorb the impact energy, which can enhance the structural strength of the part of the battery pack where the repair opening is provided and the ability to cope with external force impact, reduce the risk of deformation of the repair opening, and reduce the possibility of misalignment of the sealing ring at the repair opening due to the deformation of the repair opening, resulting in the sealing failure at the repair opening. Thus, the sealing performance and safety of the battery pack can be ensured, and the structural strength and reliability of the battery pack can be improved.

[0008] According to some embodiments of the utility model, along the length direction of the side beam body, at least one end of the collision prevention member extends beyond both ends of the repair opening.

[0009] According to some embodiments of the present utility model, along the length direction of the side beam body, the maximum dimension of the repair opening is L1, the dimension of the anti-collision member is L2, and it satisfies: L2 - L1 ≥ 5 mm.

[0010] According to some embodiments of the present utility model, along the thickness direction of the side beam body, the dimension between one end of the anti-collision member away from the side beam body and the side beam body is 30 - 50 mm.

[0011] According to some embodiments of the present utility model, along the width direction of the side beam body, the anti-collision member and the repair opening are arranged at intervals, and the minimum distance between the surface of the anti-collision member facing the repair opening and the inner wall surface of the repair opening is h2, and it satisfies: 5 ≤ h2 ≤ 10 mm.

[0012] According to some embodiments of the present utility model, the anti-collision member is located on one side of the repair opening along the width direction of the side beam body, the width of the side beam body is H, along the width direction of the side beam body, the dimension of the repair opening is h, the dimension of the anti-collision member is h3, and the distance between the surface of the anti-collision member close to the repair opening and the repair opening is h2, and it satisfies: h3 ≤ H - h - h2.

[0013] According to some embodiments of the present utility model, the anti-collision member is located on one side of the repair opening along the width direction of the side beam body, and along the width direction of the side beam body, the dimension of the anti-collision member is h3, and it satisfies: 5 mm ≤ h3 ≤ 11 mm.

[0014] According to some embodiments of the present utility model, the end face of the anti-collision member facing away from the side beam body includes a guiding inclined surface, and in the direction from the repair opening to the anti-collision member, the guiding inclined surface inclines towards the direction close to the side beam body.

[0015] According to some embodiments of the present utility model, along the length direction of the side beam body, at least one side of the two sides of the repair opening is provided with a side support beam, and the side support beam is connected to the end part in the length direction of the anti-collision member.

[0016] According to some embodiments of the present utility model, the side beam is an integrally die-cast part; and / or, the anti-collision member is welded to the side beam body.

[0017] According to some embodiments of the present utility model, the anti-collision member is located at one end of the repair opening along the width direction of the side beam body and is partially arranged opposite to the repair opening, and an avoidance groove is provided on the surface of the anti-collision member facing the other end of the repair opening along the width direction of the side beam body, and the avoidance groove penetrates through the anti-collision member along the thickness direction of the side beam body.

[0018] In some embodiments of the present utility model, along the thickness direction of the side beam body, the anti-collision member and the repair opening are arranged at intervals, and the distance between the surface of the anti-collision member close to the side beam body and the repair opening is h4, and it satisfies: h4 < 12 mm.

[0019] According to some embodiments of the present utility model, the side beam for the battery pack further includes an energy absorption box, and the energy absorption box is arranged on one side of the anti-collision member facing the other end or the other side of the repair opening along the width direction of the side beam body, and the energy absorption box is connected to the anti-collision member.

[0020] The battery pack according to the embodiment of the present utility model includes: a tray, the above-mentioned side beam for the battery pack, and a battery module. The side beam is arranged above the tray; the battery module is arranged in the side beam and above the tray.

[0021] According to the battery pack of the embodiment of the present utility model, by providing a repair opening on the side beam body of the side beam, and connecting the anti-collision member to one side surface in the thickness direction of the side beam body and on one side of the repair opening along the width direction of the side beam body, the anti-collision member can play a role in blocking and anti-collision, and can absorb the impact energy, which can enhance the structural strength of the battery pack at the position where the repair opening is provided and the ability to cope with external force impacts, can reduce the risk of deformation of the repair opening, and can reduce the possibility of the sealing ring at the repair opening being misaligned due to the deformation of the repair opening, resulting in the sealing failure at the repair opening. Thus, the sealing performance and safety of the battery pack can be ensured, and the structural strength and reliability of the battery pack can be improved.

[0022] The electrical equipment according to the embodiment of the present utility model includes: the above-mentioned battery pack.

[0023] According to the electrical equipment of the embodiment of the present utility model, by providing a repair opening on the side beam body of the side beam on the battery pack, and connecting the anti-collision member to one side surface in the thickness direction of the side beam body and on one side of the repair opening along the width direction of the side beam body, the anti-collision member can play a role in blocking and anti-collision, and can absorb the impact energy, which can enhance the structural strength of the battery pack at the position where the repair opening is provided and the ability to cope with external force impacts, can reduce the risk of deformation of the repair opening, and can reduce the possibility of the sealing ring at the repair opening being misaligned due to the deformation of the repair opening, resulting in the sealing failure at the repair opening. Thus, the sealing performance and safety of the battery pack can be ensured, and the structural strength and reliability of the battery pack can be improved. Furthermore, the safety of the electrical equipment can be improved, and the impact resistance and scratch resistance of the electrical equipment can be improved.

[0024] The additional aspects and advantages of the present utility model will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and / or additional aspects and advantages of the present utility model will become apparent and be readily understood from the following description of embodiments in conjunction with the accompanying drawings, where:

[0026] Figure 1 is a perspective view of a side beam for a battery pack according to an embodiment of the present utility model, without including a repair cover plate;

[0027] Figure 2 is Figure 1 an enlarged view of part A in

[0028] Figure 3 is a perspective view of a partial structure of a side beam for a battery pack according to an embodiment of the present utility model, including a repair cover plate;

[0029] Figure 4 is a sectional view of a side beam for a battery pack according to an embodiment of the present utility model;

[0030] Figure 5 is a perspective view of a partial structure of a side beam for a battery pack according to another embodiment of the present utility model;

[0031] Figure 6 is a perspective view of a partial structure of a side beam for a battery pack according to still another embodiment of the present utility model, without including an energy absorption box;

[0032] Figure 7 is a perspective view of a partial structure of a side beam for a battery pack according to still another embodiment of the present utility model, including an energy absorption box.

[0033] Reference numerals:

[0034] 100, side beam;

[0035] 1, side beam body; 11, repair opening; 12, first mounting hole;

[0036] 2, anti-collision member; 21, guiding inclined surface; 22, chamfer; 23, avoidance groove; 24, third mounting hole;

[0037] 3, side support beam;

[0038] 4, energy absorption box; 41, fourth mounting hole;

[0039] 5, repair cover plate; 51, second mounting hole;

[0040] 6, lifting lug. Detailed implementation manners

[0041] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where like or similar reference numerals denote like or similar elements or elements having like or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present utility model and should not be construed as limiting the present utility model.

[0042] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0043] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "mounted", "connected" and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0044] The following refers to Figures 1 - 7 Describe the side beam 100 for a battery pack according to an embodiment of the present utility model.

[0045] As Figure 1 、 Figure 2 And Figure 3 As shown, the side beam 100 for a battery pack according to an embodiment of the present utility model includes a side beam body 1 and a collision prevention member 2.

[0046] Specifically, as Figure 2 And Figure 3As shown, the side beam body 1 has a repair opening 11. The repair opening 11 penetrates the side beam body 1 in the thickness direction of the side beam body 1. The side beam body 1 is used to form the main body of the battery pack box body, which can protect components such as battery modules in the battery pack and can also provide binding force to the battery modules. For example, when a thermal runaway occurs in the battery module, the side beam body 1 can restrain the expansion of the battery module, thereby improving the safety of the battery pack.

[0047] The repair opening 11 is provided on the side beam body 1, which is convenient for repairing the battery pack, inspecting or replacing the internal components of the battery pack. Without disassembling the battery pack, the maintenance of the internal electrical components of the battery pack can be realized, improving the repair convenience, thereby improving the inspection efficiency and reducing the maintenance cost of the battery pack.

[0048] A repair cover plate 5 is provided at the repair opening 11. The repair cover plate 5 is located on one side of the side beam body 1 in the thickness direction and is used to block the repair opening 11. A sealing ring is provided between the repair cover plate 5 and the side beam body 1. The sealing ring is arranged around the repair opening 11, thereby realizing the sealing at the repair opening 11.

[0049] In addition, when the battery pack is applied to a vehicle, the bottom of the battery pack faces the ground. During the operation of the vehicle, the bottom of the battery pack is easily impacted by foreign objects such as gravel and rainwater. If a repair opening is opened at the bottom of the battery pack, it is easy to cause the deformation of the repair opening. The sealing at the repair opening is realized by the compression of the sealing ring arranged around the repair opening. The compression amount of the sealing ring is limited. The slight deformation of the repair opening will cause the sealing ring to be misaligned, resulting in the failure of the sealing at the repair opening, thereby affecting the airtightness of the battery pack. Therefore, compared with opening a repair opening at the bottom of the battery pack, setting the repair opening 11 on the side beam body 1 can not only effectively reduce the thickness of the battery pack, but also reduce the risk of deformation of the repair opening 11 caused by the impact of foreign objects such as gravel, and can reduce the possibility of the sealing failure at the repair opening 11 caused by the misalignment of the sealing ring, thereby improving the airtightness and safety of the battery pack.

[0050] Among them, the number and shape of the repair openings 11 can be set according to the specific requirements of the battery pack, and the present utility model does not make specific limitations on this. In this embodiment, the size of the repair opening 11 on the side beam body 1 is designed to be as small as possible, which can effectively reduce the vulnerable area of the repair opening 11.

[0051] Furthermore, the anti-collision member 2 is connected to one surface of the side beam body 1 in the thickness direction. Along the width direction of the side beam body 1, the anti-collision member 2 is located on one side of the repair opening 11. One end of the anti-collision member 2 is connected to the side beam body 1 and is located on one side of the repair opening 11 along the width direction of the side beam body 1, and the other end extends in the direction away from the side beam body 1 along the thickness direction of the side beam body 1, which can protect the repair opening 11 in the thickness direction of the side beam body 1, and can also effectively strengthen the structural strength of one side of the repair opening 11 along the width direction of the side beam body 1. Along the width direction of the side beam body 1, when the side of the repair opening 11 provided with the anti-collision member 2 is subjected to an external impact, the anti-collision member 2 can play a role in blocking and anti-collision, and can absorb the impact energy to protect the repair opening 11 from deformation, which can enhance the ability of the battery pack with the repair opening 11 to cope with external impacts, and can reduce the possibility of the sealing ring at the repair opening 11 being misaligned due to the deformation of the repair opening 11, resulting in the sealing failure at the repair opening 11, thereby ensuring the sealing and safety of the battery pack and improving the structural strength and reliability of the battery pack.

[0052] Among them, it should be noted that as Figure 1 shown, the thickness direction of the side beam body 1 is the direction perpendicular to the plane where one surface of the side beam 100 faces the battery module in the battery pack. The battery module is provided on one side of the side beam body 1 in the thickness direction. The thickness direction, length direction and width direction of the side beam body 1 are perpendicular to each other, and the length of the side beam body 1 in the length direction is greater than the length of the side beam body 1 in the width direction.

[0053] When the battery pack is applied to a vehicle, the width direction of the side beam body 1 can be the up and down direction of the vehicle. As Figure 2 shown, the anti-collision member 2 is connected to one surface of the side beam body 1 in the thickness direction and is located below the repair opening 11. The bottom of the battery pack faces the ground. During the operation of the vehicle, the bottom of the battery pack is easily impacted by external objects such as gravel and rain, or when the vehicle is undergoing a scraping test, the vehicle passes through ground obstacles at high speed, and the bottom of the battery pack will be impacted by the ground obstacles. At this time, the anti-collision member 2 can effectively block the acting force of the above-mentioned gravel, ground obstacles and other external objects, play a role in protecting and anti-collision for the repair opening 11, and can absorb the impact energy to avoid the deformation of the side beam body 1 at the repair opening 11, and can reduce the possibility of the sealing ring at the repair opening 11 being misaligned due to the deformation of the repair opening 11, effectively avoiding the loss of sealing of the battery pack, thereby ensuring the safety of the battery pack and improving the structural strength and reliability of the battery pack.

[0054] According to the side beam 100 for a battery pack according to an embodiment of the present utility model, by providing a repair opening 11 on the side beam body 1 and connecting the anti-collision member 2 to one surface of the side beam body 1 in the thickness direction and located on one side of the repair opening 11 along the width direction of the side beam body 1, the anti-collision member 2 can play a role in blocking and anti-collision, and can absorb the energy of impact, which can enhance the structural strength of the battery pack at the position where the repair opening 11 is provided and the ability to cope with external force impacts, can reduce the risk of deformation of the repair opening 11, and can reduce the possibility of the sealing ring at the repair opening 11 being misaligned due to the deformation of the repair opening 11 resulting in the sealing failure at the repair opening 11, thereby ensuring the sealing performance and safety of the battery pack and improving the structural strength and reliability of the battery pack.

[0055] In some embodiments of the present utility model, as Figure 2 and Figure 3 shown, along the length direction of the side beam body 1, at least one end of the anti-collision member 2 extends beyond both ends of the repair opening 11. The protection range of the anti-collision member 2 for the repair opening 11 can be increased in the length direction of the side beam body 1, and the end of the anti-collision member 2 extending beyond the repair opening 11 in the length direction of the side beam body 1 can play a better role in protecting the repair opening 11. When the side of the repair opening 11 provided with the anti-collision member 2 is subjected to an oblique external force impact, the end of the anti-collision member 2 extending beyond the repair opening 11 can still play a role in blocking and anti-collision, and can absorb the energy of impact, protecting the repair opening 11 from deformation, which can enhance the ability of the battery pack at the position where the repair opening 11 is provided to cope with oblique external force impacts, and can reduce the possibility of the sealing ring at the repair opening 11 being misaligned due to the deformation of the repair opening 11 resulting in the sealing failure at the repair opening 11, thereby better ensuring the sealing performance and safety of the battery pack and improving the structural strength and reliability of the battery pack.

[0056] Preferably, along the length direction of the side beam body 1, both ends of the anti-collision member 2 extend beyond both ends of the repair opening 11, so that both ends of the anti-collision member 2 can resist oblique external force impacts towards the repair opening 11, thereby improving the protection effect on the repair opening 11.

[0057] In some embodiments of the present utility model, as Figure 2As shown in the figure, along the length direction of the side beam body 1, the maximum dimension of the repair opening 11 is L1, and the dimension of the anti-collision member 2 is L2, and it satisfies: L2 - L1 ≥ 5 mm. If L2 - L1 < 5 mm, then along the length direction of the side beam body 1, the dimensions of the two ends of the anti-collision member 2 exceeding the two ends of the repair opening 11 are too small, and the protection range of the anti-collision member 2 for the repair opening 11 is too small, unable to ensure the ability of the battery pack to respond to oblique external force impacts at the position where the repair opening 11 is provided, and the risk of deformation of the repair opening 11 is greatly increased. Making L2 - L1 ≥ 5 mm can ensure the protection and anti-collision effect of the anti-collision member 2 on the two ends of the repair opening 11 in the length direction of the side beam body 1, reduce the risk of deformation of the repair opening 11, and can reduce the possibility of misalignment of the sealing ring at the repair opening 11 due to the deformation of the repair opening 11, resulting in sealing failure at the repair opening 11. Thus, the sealing performance and safety of the battery pack can be better ensured, and the structural strength and reliability of the battery pack can be improved.

[0058] In some embodiments of the present invention, as Figure 4 shown, along the thickness direction of the side beam body 1, the dimension between one end of the anti-collision member 2 away from the side beam body 1 and the side beam body 1 is L3, and it satisfies: 30 mm ≤ L3 ≤ 50 mm. Here, it should be noted that along the thickness direction of the side beam body 1, L3 is the maximum distance between one end face of the anti-collision member 2 away from the side beam body 1 and the side surface of the side beam body 1 connected to the anti-collision member 2.

[0059] If L3 < 30 mm, then the dimension of the anti-collision member 2 along the thickness direction of the side beam body 1 is too small, and the protection range of the anti-collision member 2 for the repair opening 11 is too small. When the side of the repair opening 11 provided with the anti-collision member 2 is subjected to an external force impact, the blocking and anti-collision effects of the anti-collision member 2 cannot be ensured, and the risk of deformation of the repair opening 11 is greatly increased. If L3 > 50 mm, then the dimension of the anti-collision member 2 along the thickness direction of the side beam body 1 is too large, which will increase the dimension of the battery pack in the thickness direction of the side beam body 1, and is not conducive to the installation and application of the battery pack.

[0060] Controlling L3 within the range of 30 - 50 mm can not only prevent the battery pack from occupying too much space in the thickness direction of the side beam body 1, but also ensure the protection range of the anti-collision member 2 for the repair opening 11 and the blocking and anti-collision effects of the anti-collision member 2, reduce the risk of deformation of the repair opening 11, and can reduce the possibility of misalignment of the sealing ring at the repair opening 11 due to the deformation of the repair opening 11, resulting in sealing failure at the repair opening 11. The sealing performance and safety of the battery pack can be better ensured, and the structural strength and reliability of the battery pack can be improved.

[0061] In some embodiments of the present invention, as Figure 2 and Figure 3As shown in the figure, along the width direction of the side beam body 1, the anti-collision member 2 and the repair opening 11 are arranged at intervals. The minimum distance between the surface of the anti-collision member 2 facing the repair opening 11 and the inner wall surface of the repair opening 11 is h2, and it satisfies: 5 ≤ h2 ≤ 10 mm. The side beam body 1 is connected with a repair cover plate 5 for blocking the repair opening 11. The repair cover plate 5 can be connected to the side beam body 1 through fasteners. Along the circumferential direction of the repair opening 11 on the side beam body 1, a plurality of first mounting holes 12 are arranged at intervals. The repair cover plate 5 is provided with second mounting holes 51 corresponding to the first mounting holes 12. The operator can pass the fasteners through the second mounting holes 51 and the first mounting holes 12 in sequence to fix the repair cover plate 5 on the side beam body 1. The surface of the anti-collision member 2 close to the repair opening 11 is arranged at intervals with the repair opening 11, which can avoid the repair cover plate 5 and the first mounting holes 12 and second mounting holes 51 for fixing the repair cover plate 5, and prevent collision and interference between components, and also helps the operator to perform operations such as assembly.

[0062] If h2 < 5 mm, the distance between the surface of the anti-collision member 2 close to the repair opening 11 and the repair opening 11 is too small, which affects the avoidance effect on the repair cover plate 5 and the mounting holes for fixing the repair cover plate 5, etc., and it is impossible to avoid the possibility of collision and interference between components. If h2 > 10 mm, the distance between the surface of the anti-collision member 2 close to the repair opening 11 and the repair opening 11 is too large, which will increase the width of the side beam body 1, thereby increasing the occupied volume of the battery pack. Controlling h2 within the range of 5 - 10 mm can not only effectively avoid the repair cover plate 5 and the mounting holes for fixing the repair cover plate 5, etc., but also minimize the width of the side beam body 1 as much as possible, thereby saving the occupied volume of the battery pack.

[0063] In some embodiments of the present invention, as Figure 1 , Figure 2 and Figure 4 shown, the anti-collision member 2 is located on one side of the repair opening 11 along the width direction of the side beam body 1. The width of the side beam body 1 is H. Along the width direction of the side beam body 1, the size of the repair opening 11 is h, and the size of the anti-collision member 2 is h3. The distance between the surface of the anti-collision member 2 close to the repair opening 11 and the repair opening 11 is h2, and it satisfies: h3 ≤ H - h - h2. This can ensure that one end of the anti-collision member 2 can be connected to the main body of the side beam 100, and in the width direction of the side beam body 1, it can avoid the anti-collision member 2 having too large a size to prevent the anti-collision member 2 from interfering with the repair opening 11 and ensure the rationality of the structural arrangement.

[0064] In some embodiments of the present invention, as Figure 1 , Figure 2 and Figure 4As shown in the figure, the anti-collision member 2 is located on one side of the repair opening 11 along the width direction of the side beam body 1. Along the width direction of the side beam body 1, the size of the anti-collision member 2 is h3, and it satisfies: 5mm ≤ h3 ≤ 11mm. If h3 < 5mm, the size of the anti-collision member 2 in the width direction of the side beam body 1 is too small, and the structural strength of the anti-collision member 2 is too small, affecting the effect of the anti-collision member 2 absorbing impact energy. If h3 > 11mm, the size of the anti-collision member 2 in the width direction of the side beam body 1 is too large, which will increase the width of the side beam body 1, thereby increasing the occupied volume of the battery pack. Controlling h3 within the range of 5 - 11mm can not only ensure the structural strength of the anti-collision member 2 and the effect of absorbing impact energy, reduce the risk of deformation of the repair opening 11, and can reduce the possibility of misalignment of the sealing ring at the repair opening 11 due to the deformation of the repair opening 11, resulting in seal failure at the repair opening 11, so as to better ensure the sealing performance and safety of the battery pack, and improve the structural strength and reliability of the battery pack. It can also minimize the width of the side beam body 1 as much as possible, thereby saving the occupied volume of the battery pack.

[0065] In some embodiments of the present invention, such as Figure 2 , Figure 3 and Figure 4 As shown in the figure, the end face of the anti-collision member 2 facing away from the side beam body 1 includes a guiding inclined surface 21. In the direction from the repair opening 11 to the anti-collision member 2, the guiding inclined surface 21 is inclined towards the direction close to the side beam body 1. The guiding inclined surface 21 can play a guiding role. When the anti-collision member 2 is impacted by an external force perpendicular to the side beam body 1, the guiding inclined surface 21 can guide the external force to incline towards the inclined direction of the guiding inclined surface 21, that is, make the external force perpendicular to the side beam body 1 incline towards the direction from the repair opening 11 to the anti-collision member 2, so that the external force can be away from the repair opening 11, thereby protecting the repair opening 11 and reducing the possibility of the repair opening 11 being deformed by the external force impact. It can reduce the risk of misalignment of the sealing ring at the repair opening 11 due to the deformation of the repair opening 11, resulting in seal failure at the repair opening 11. Thus, it can ensure the sealing performance and safety of the battery pack, and improve the structural strength and reliability of the battery pack.

[0066] In some embodiments of the present invention, such as Figure 3 and Figure 4As shown, there is a fillet 22 between the guiding inclined surface 21 and the surface of the anti-collision member 2 facing away from the repair opening 11. The fillet 22 can assist the guiding inclined surface 21 to play a further guiding role. When the anti-collision member 2 is impacted by an external force perpendicular to the side beam body 1, the guiding inclined surface 21 can guide the external force to incline towards the inclination direction of the guiding inclined surface 21 to the fillet 22, and the fillet 22 can continue to guide the force on the guiding inclined surface 21 to the lower part of the surface of the anti-collision member 2 facing away from the repair opening 11. This can not only make the external force deviate from the repair opening 11, thus protecting the repair opening 11, but also lift the battery pack by means of the external force of the impact object, reducing the overlapping amount of the impact object and the side beam 100, thereby further reducing the damage to the repair opening 11 and the battery pack. It can better reduce the possibility of the repair opening 11 being deformed by an external force, and can reduce the risk of the sealing ring at the repair opening 11 being misaligned due to the deformation of the repair opening 11, resulting in the sealing failure at the repair opening 11. Thus, it can ensure the sealing performance and safety of the battery pack, and improve the structural strength and reliability of the battery pack.

[0067] It should be noted that when the battery pack is applied to a vehicle, the bottom of the battery pack faces the ground. When the vehicle is driving on a rough road condition or during a vehicle bottom scraping test, the vehicle passes through a ground obstacle at a high speed. At this time, the height of the ground obstacle exceeds the bottom end of the side beam 100, which is the overlapping amount of the ground obstacle and the side beam 100.

[0068] In some embodiments of the present invention, as Figure 3 and Figure 4 shown, the radius of the fillet 22 is 5 - 10 mm. If the radius of the fillet 22 is less than 5 mm, the arc of the fillet 22 is too short and not smooth enough, affecting the guiding function of the fillet 22. If the radius of the fillet 22 is greater than 10 mm, the arc of the fillet 22 is too long and too smooth, exceeding the chamferable dimension range of the guiding inclined surface 21 and affecting the structure of the anti-collision member 2. Making the radius of the fillet 22 within the range of 5 - 10 mm can ensure the guiding effect of the fillet 22 while ensuring the structure of the anti-collision member 2, reducing the damage of the external force perpendicular to the side beam body 1 to the repair opening 11 and the battery pack, and reducing the possibility of the sealing ring at the repair opening 11 being misaligned due to the deformation of the repair opening 11, resulting in the sealing failure at the repair opening 11. Thus, it can ensure the sealing performance and safety of the battery pack, and improve the structural strength and reliability of the battery pack.

[0069] In some embodiments of the present invention, as Figures 1 - 7As shown, along the length direction of the side beam body 1, at least one side of the two sides of the repair opening 11 is provided with a side support beam 3, and the side support beam 3 is connected to the end of the anti-collision member 2 in the length direction. It can further enhance the structural strength of the anti-collision member 2, thereby enhancing the functions of the anti-collision member 2 in blocking and anti-collision as well as the effect of absorbing impact energy, and enhancing the ability of the battery pack at the repair opening 11 to cope with external force impacts. At the same time, the side support beam 3 can also play a role in blocking and protecting the repair opening 11 in the length direction of the side beam body 1. When the battery pack is impacted by an external object, the side support beam 3 can resist the component force generated by the external object in the length direction of the side beam body 1, further increasing the protection range of the repair opening 11 and reducing the possibility of the repair opening 11 being deformed by an external force impact, and being able to reduce the risk of the sealing ring at the repair opening 11 being misaligned due to the deformation of the repair opening 11 resulting in the sealing failure at the repair opening 11. Furthermore, it can better ensure the sealing performance and safety of the battery pack, and improve the structural strength and reliability of the battery pack.

[0070] Preferably, a lifting lug 6 is provided on the side beam body 1, and the side wall of the lifting lug 6 close to the repair opening 11 can be used as the side support beam 3, that is, the side wall of the lifting lug 6 close to the repair opening 11 is connected to the end of the anti-collision member 2 in the length direction. While enhancing the structural strength of the anti-collision member 2 and enhancing the protection effect on the repair opening 11, it can also save the number of components of the side beam 100 and reduce the assembly and production costs.

[0071] In some embodiments of the present invention, as Figures 1 - 4 shown, the side beam 100 is an integrally die-cast part, that is, the side beam body 1 and the anti-collision member 2 are integrally cast, which can significantly improve the structural strength of the side beam 100 as well as the reliability and stability of the side beam 100, thereby enhancing the functions of the anti-collision member 2 in blocking and anti-collision as well as the effect of absorbing impact energy, reducing the possibility of the repair opening 11 being deformed by an external force impact, being able to enhance the ability of the battery pack at the repair opening 11 to cope with external force impacts, and being able to reduce the possibility of the sealing ring at the repair opening 11 being misaligned due to the deformation of the repair opening 11 resulting in the sealing failure at the repair opening 11, thereby ensuring the sealing performance and safety of the battery pack and improving the structural strength and reliability of the battery pack. At the same time, the integrally die-casting process can improve the production efficiency of the side beam 100, and further shorten the production cycle of the battery pack and reduce the production cost.

[0072] In some embodiments of the present invention, as Figure 5As shown, the anti-collision member 2 is welded to the side beam body 1. For example, the anti-collision member 2 can be first processed from a profile, and then the anti-collision member 2 is welded to one surface on the thickness direction side of the side beam 100 body. The existing welding technology is mature, the operation is simple and convenient for processing, which can reduce the input cost in the processing technology, and can also ensure the connection stability between the anti-collision member 2 and the side beam body 1, so as to ensure the functions of the anti-collision member 2 in blocking and anti-collision and the effect of absorbing impact energy.

[0073] In some embodiments of the present invention, as Figure 6 shown, the anti-collision member 2 is located at one end of the repair opening 11 along the width direction of the side beam body 1 and is partially arranged opposite to the repair opening 11. An avoidance groove 23 is provided on the surface of the anti-collision member 2 facing the other end of the repair opening 11 along the width direction of the side beam body 1, and the avoidance groove 23 penetrates through the anti-collision member 2 along the thickness direction of the side beam body 1. Thus, the size of the anti-collision member 2 in the width direction of the side beam body 1 can be increased to enhance the structural strength of the anti-collision member 2 and the effect of absorbing impact energy, reduce the risk of deformation of the repair opening 11, and can reduce the possibility of misalignment of the sealing ring at the repair opening 11 due to the deformation of the repair opening 11, resulting in sealing failure at the repair opening 11. Therefore, the sealing performance and safety of the battery pack can be better ensured, and the structural strength and reliability of the battery pack can be improved. At the same time, the avoidance groove 23 can play an avoidance role. The side beam body 1 is connected with a repair cover plate 5 for blocking the repair opening 11. The repair cover plate 5 can be connected to the side beam body 1 through fasteners. The avoidance groove 23 can avoid the repair cover plate 5 and the installation holes for fixing the repair cover plate 5, prevent collision and interference between the repair cover plate 5 and the anti-collision member 2, and is also helpful for operators to perform operations such as assembly and disassembly.

[0074] In some embodiments of the present invention, as Figure 6 and Figure 7As shown in the figure, along the thickness direction of the side beam body 1, the anti-collision member 2 and the repair opening 11 are arranged at intervals. The distance between the surface of the anti-collision member 2 close to the side beam body 1 and the repair opening 11 is h4, and it satisfies: h4 < 12 mm. The anti-collision member 2 is arranged at intervals with the repair opening 11 in the thickness direction of the side beam body 1, which can prevent the part of the anti-collision member 2 opposite to the repair opening 11 from directly contacting the repair opening 11, leaving a space for the anti-collision member 2 to deform when being impacted by an external force. Thus, it can avoid hard collision between the anti-collision member 2 and the repair opening 11, resulting in deformation of the repair opening 11, enhance the ability of the anti-collision member 2 to absorb impact energy, reduce the possibility of seal failure at the repair opening 11 due to misalignment of the sealing ring at the repair opening 11 caused by deformation of the repair opening 11, and further ensure the sealing performance and safety of the battery pack, improving the structural strength and reliability of the battery pack. Making h4 < 12 mm can prevent the gap between the anti-collision member 2 and the repair opening 11 from being too large in the thickness direction of the side beam body 1, reduce the occupied space of the battery pack in the thickness direction of the side beam body 1, and contribute to the installation and application of the battery pack.

[0075] Among them, the side beam body 1 is provided with a convex structure. The convex structure can be located on both sides of the repair opening 11 along the length direction of the side beam body 1. The two ends of the anti-collision member 2 along the length direction of the side beam body 1 are connected to the convex structure. The anti-collision member 2 can be fixed on the convex structure of the side beam 100 body through a welding process, which can ensure the connection stability between the anti-collision member 2 and the side beam 100 body. Along the thickness direction of the side beam body 1, by setting the convex structure, while ensuring the connection between the anti-collision member 2 and the side beam 100 body, the anti-collision member 2 can be arranged at intervals with the repair opening 11 in the thickness direction of the side beam body 1, and the structural setting is reasonable.

[0076] In some embodiments of the present invention, as Figure 7 shown, the side beam 100 for the battery pack further includes an energy absorption box 4. The energy absorption box 4 is arranged on one side of the anti-collision member 2 facing the other end or the other side of the repair opening 11 along the width direction of the side beam body 1, and the energy absorption box 4 is connected to the anti-collision member 2. The energy absorption box 4 can further absorb the impact force received by the anti-collision member 2, further enhance the structural strength of the anti-collision member 2 and the effect of absorbing impact energy, and reduce the risk of deformation of the repair opening 11.

[0077] Meanwhile, at least a part of the energy-absorbing box 4 is disposed opposite to the repair opening 11, and the energy-absorbing box 4 is spaced from the repair opening 11 in the thickness direction of the side beam body 1, which can prevent the part of the energy-absorbing box 4 opposite to the repair opening 11 from directly contacting the repair opening 11, leaving a space for the energy-absorbing box 4 to deform under an external impact force. When the side beam body 1 is impacted by an external force perpendicular to the side beam body 1, the energy-absorbing box 4 can play a role in blocking and anti-collision, and can absorb the impact energy, preventing the repair opening 11 from deforming due to the external force perpendicular to the side beam body 1, and reducing the possibility of the sealing ring at the repair opening 11 being misaligned due to the deformation of the repair opening 11, resulting in sealing failure at the repair opening 11. Thus, the sealing performance and safety of the battery pack can be better ensured, and the structural strength and reliability of the battery pack can be further improved.

[0078] Preferably, as Figure 6 and Figure 7 shown, the energy-absorbing box 4 and the anti-collision member 2 are connected by fasteners, which can ensure the connection stability between the energy-absorbing box 4 and the anti-collision member 2, thus ensuring the anti-impact ability of the energy-absorbing box 4 and the anti-collision member 2 and the effect of protecting the repair opening 11. At the same time, the detachable connection between the energy-absorbing box 4 and the anti-collision member 2 can be realized. When the operator needs to remove the repair cover plate 5 for blocking the repair opening 11, the energy-absorbing box 4 can be removed first to avoid interference from the energy-absorbing box 4, facilitating the operator to repair, inspect the battery pack or replace the internal components of the battery pack through the repair opening 11. Among them, multiple third mounting holes 24 are provided on the anti-collision member 2 at intervals, and fourth mounting holes 41 corresponding to the third mounting holes 24 are provided on the energy-absorbing box 4. The operator can pass the fasteners through the fourth mounting holes 41 and the third mounting holes 24 in sequence to fix the energy-absorbing box 4 on the anti-collision member 2.

[0079] The battery pack according to an embodiment of the present invention will be described below.

[0080] The battery pack according to an embodiment of the present invention includes: a tray, the above-mentioned side beam 100 for the battery pack, and a battery module.

[0081] Specifically, the side beam 100 is disposed above the tray, the battery module is disposed within the side beam 100 and above the tray, and the battery module is composed of a plurality of battery cells. The side beam and the tray can form a receiving cavity, and the battery module is disposed within the receiving cavity. The tray is used to support and fix the battery module, capable of protecting the battery module from damage. The side beam can enhance the structural strength of the battery pack, increase its load-bearing capacity and anti-extrusion ability. By providing the side beam and the tray, the stability and safety of the battery pack can be ensured.

[0082] As Figure 1 、 Figure 2 and Figure 3As shown in the figure, the side beam 100 includes a side beam body 1 and an anti-collision member 2. There is a repair opening 11 on the side beam body 1. The repair opening 11 penetrates the side beam body 1 in the thickness direction of the side beam body 1. The side beam body 1 is used to form the main body of the battery pack box body, which can protect components such as battery modules in the battery pack, and at the same time can also provide a binding force to the battery modules. For example, when a battery module undergoes thermal runaway, the side beam body 1 can restrain the expansion of the battery module, thereby improving the safety of the battery pack.

[0083] A repair opening 11 is provided on the side beam body 1, which is convenient for repairing the battery pack, inspecting or replacing internal components of the battery pack, and can also achieve the maintenance of internal electrical components of the battery pack without disassembling the battery pack, improving the repair convenience, thereby improving the inspection efficiency and reducing the maintenance cost of the battery pack.

[0084] A repair cover plate 5 is provided at the repair opening 11. The repair cover plate 5 is located on one side of the side beam body 1 in the thickness direction and is used to block the repair opening 11. A sealing ring is provided between the repair cover plate 5 and the side beam body 1. The sealing ring is arranged around the repair opening, thereby realizing the sealing at the repair opening 11.

[0085] In addition, when the battery pack is applied to a vehicle, the bottom of the battery pack faces the ground. During the operation of the vehicle, the bottom of the battery pack is easily impacted by foreign objects such as gravel and rainwater. If a repair opening is opened at the bottom of the battery pack, it is easy to cause deformation of the repair opening. The sealing at the repair opening is achieved by the compression of the sealing ring arranged around the repair opening. The compression amount of the sealing ring is limited. A slight deformation of the repair opening will cause the sealing ring to be misaligned, resulting in the failure of the sealing at the repair opening, thus affecting the airtightness of the battery pack. Therefore, compared with opening a repair opening at the bottom of the battery pack, setting the repair opening 11 on the side beam body 1 can not only effectively reduce the thickness of the battery pack, but also reduce the risk of deformation of the repair opening 11 caused by the impact of foreign objects such as gravel, and can reduce the possibility of the sealing failure at the repair opening 11 due to the misalignment of the sealing ring, thereby improving the airtightness and safety of the battery pack.

[0086] Among them, the number and shape of the repair openings 11 can be set according to the specific requirements of the battery pack, and the present utility model does not make specific limitations in this regard. In this embodiment, the size of the repair opening 11 on the side beam body 1 is designed to be as small as possible, which can effectively reduce the vulnerable area of the repair opening 11.

[0087] Furthermore, the anti-collision member 2 is connected to one surface of the side beam body 1 in the thickness direction, and in the width direction of the side beam body 1, the anti-collision member 2 is located on one side of the repair opening 11. One end of the anti-collision member 2 is connected to the side beam body 1 and is located on one side of the repair opening 11 in the width direction of the side beam body 1, and the other end extends in the direction away from the side beam body 1 along the thickness direction of the side beam body 1, which can protect the repair opening 11 in the thickness direction of the side beam body 1, and can also effectively strengthen the structural strength of one side or one end of the repair opening 11 in the width direction of the side beam body 1. In the width direction of the side beam body 1, when the side with the anti-collision member 2 of the repair opening 11 is impacted by an external force, the anti-collision member 2 can play a role in blocking and anti-collision, and can absorb the impact energy to protect the repair opening 11 from deformation, enhance the ability of the battery pack with the repair opening 11 to cope with external force impacts, reduce the possibility of the sealing ring at the repair opening 11 being misaligned due to the deformation of the repair opening 11 resulting in the sealing failure at the repair opening 11, thereby ensuring the sealing and safety of the battery pack, and improving the structural strength and reliability of the battery pack.

[0088] Among them, it should be noted that as Figure 1 shown, the thickness direction of the side beam body 1 is the direction perpendicular to the plane where one surface of the side beam 100 faces the battery module in the battery pack. The battery module is arranged on one side in the thickness direction of the side beam body 1. The thickness direction, length direction and width direction of the side beam body 1 are perpendicular to each other, and the length of the side beam body 1 in the length direction is greater than the length of the side beam body 1 in the width direction.

[0089] When the battery pack is applied to a vehicle, the width direction of the side beam body 1 can be the up-down direction of the vehicle. As Figure 2 shown, the anti-collision member 2 is connected to one surface of the side beam body 1 in the thickness direction and is located below the repair opening 11. The bottom of the battery pack faces the ground. During the operation of the vehicle, the bottom of the battery pack is easily impacted by external objects such as gravel and rainwater, or when the vehicle is performing a scraping test, the vehicle passes through ground obstacles at high speed, and the bottom of the battery pack will be impacted by the ground obstacles. At this time, the anti-collision member 2 can effectively block the acting force of the above-mentioned gravel, ground obstacles and other external objects, play a role in protecting and anti-collision for the repair opening 11, absorb the impact energy to avoid the deformation of the side beam body 1 at the repair opening 11, reduce the possibility of the sealing ring at the repair opening 11 being misaligned due to the deformation of the repair opening 11 resulting in the sealing failure at the repair opening 11, effectively avoid the loss of sealing of the battery pack, thereby ensuring the safety of the battery pack, and improving the structural strength and reliability of the battery pack.

[0090] According to the battery pack of the embodiment of the present utility model, by providing a repair opening 11 on the side beam body 1 of the side beam 100, and connecting the anti-collision member 2 to one surface of the side beam body 1 in the thickness direction and located on one side of the repair opening 11 along the width direction of the side beam body 1, the anti-collision member 2 can play a role in blocking and anti-collision, and can absorb the impact energy, which can enhance the structural strength of the battery pack at the position where the repair opening 11 is provided and the ability to cope with external force impacts, can reduce the risk of deformation of the repair opening 11, and can reduce the possibility of misalignment of the sealing ring at the repair opening 11 due to the deformation of the repair opening 11, resulting in sealing failure at the repair opening 11. Thus, the sealing performance and safety of the battery pack can be ensured, and the structural strength and reliability of the battery pack can be improved.

[0091] The following describes an electrical device according to an embodiment of the present utility model.

[0092] The electrical device according to an embodiment of the present utility model includes: the above-mentioned battery pack.

[0093] According to the electrical device of the embodiment of the present utility model, by providing a repair opening 11 on the side beam body 1 of the side beam 100 on the battery pack, and connecting the anti-collision member 2 to one surface of the side beam body 1 in the thickness direction and located on one side of the repair opening 11 along the width direction of the side beam body 1, the anti-collision member 2 can play a role in blocking and anti-collision, and can absorb the impact energy, which can enhance the structural strength of the battery pack at the position where the repair opening 11 is provided and the ability to cope with external force impacts, can reduce the risk of deformation of the repair opening 11, and can reduce the possibility of misalignment of the sealing ring at the repair opening 11 due to the deformation of the repair opening 11, resulting in sealing failure at the repair opening 11. Thus, the sealing performance and safety of the battery pack can be ensured, and the structural strength and reliability of the battery pack can be improved. Furthermore, the safety of the electrical device can be improved, and the impact resistance and scratch resistance of the electrical device can be improved.

[0094] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0095] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A side beam for a battery pack, characterized in that: include: A side beam body, wherein the side beam body has a repair opening, and the repair opening penetrates the side beam body in a thickness direction of the side beam body; An anti-collision piece is connected to a surface of one side in the thickness direction of the side beam body, and is located at one side of the repair opening along the width direction of the side beam body.

2. The side beam for a battery pack according to claim 1, characterized in that: Along the length direction of the side beam body, at least one end of the anti-collision component exceeds two ends of the repair opening.

3. The side beam for a battery pack according to claim 1, characterized in that: Along the length direction of the side beam body, the maximum size of the repair opening is L1, the size of the anti-collision component is L2, and they satisfy: L2-L1≥5mm.

4. The side beam for a battery pack according to claim 1, characterized in that: Along the thickness direction of the side beam body, the dimension between the end of the anti-collision component away from the side beam body and the side beam body is 30-50 mm.

5. The side beam for a battery pack according to claim 1, characterized in that: Along the width direction of the side beam body, the anti-collision member is spaced apart from the repair opening, and the minimum distance between the surface of the anti-collision member facing the repair opening and the inner wall surface of the repair opening is h2, and satisfies: 5≤h2≤10mm.

6. The side beam for a battery pack according to claim 1, characterized in that: The anti-collision part is located on one side of the repair opening along the width direction of the side beam body, the width of the side beam body is H, the size of the repair opening along the width direction of the side beam body is h, the size of the anti-collision part is h3, the distance between the surface of the anti-collision part close to the repair opening and the repair opening is h2, and satisfies: h3≤Hh-h2.

7. The side beam for a battery pack according to claim 1, characterized in that: The anti-collision component is located at one side of the repair opening along the width direction of the side beam body. Along the width direction of the side beam body, the size of the anti-collision component is h3 and satisfies: 5mm≤h3≤11mm.

8. The side beam for a battery pack according to claim 1, characterized in that: The end surface of the anti-collision component facing away from the side beam body comprises a guiding inclined surface, and in the direction from the repair opening to the anti-collision component, the guiding inclined surface is inclined toward a direction close to the side beam body.

9. The side beam for a battery pack according to claim 1, characterized in that: Along the length direction of the side beam body, at least one of the two sides of the repair opening is provided with a side support beam, and the side support beam is connected to the end of the anti-collision component in the length direction.

10. The side beam for a battery pack according to claim 1, characterized in that: The side beam is an integral die-casting; And / or, the anti-collision component is welded to the side beam body.

11. The side beam for a battery pack according to claim 1, characterized in that: The anti-collision member is located at one end of the repair opening along the width direction of the side beam body and is partially arranged opposite to the repair opening. An avoidance groove is provided on the surface of the anti-collision member at the other end of the repair opening along the width direction of the side beam body, and the avoidance groove penetrates the anti-collision member along the thickness direction of the side beam body.

12. The side beam for a battery pack according to claim 11, characterized in that: Along the thickness direction of the side beam body, the anti-collision component and the repair opening are spaced apart, and the distance between the surface of the anti-collision component close to the side beam body and the repair opening is h4, and satisfies: h4<12mm.

13. The side beam for a battery pack according to any one of claims 1 to 12, characterized in that: Also includes: An energy absorption box is arranged on one side of the other end or the other side of the anti-collision member facing the repair opening along the width direction of the side beam body, and the energy absorption box is connected to the anti-collision member.

14. A battery pack, characterized in that: include: tray; The side beam for a battery pack according to any one of claims 1 to 13, wherein the side beam is arranged above the tray; A battery module is arranged in the side beam and above the tray.

15. An electrical equipment, characterized in that: Comprising the battery pack according to claim 14.

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