Battery shell, battery pack and electric equipment

Abstract

The utility model discloses a battery shell, a battery pack and electric equipment, and relates to the technical field of batteries, the battery shell comprises a lifting lug mounting part and a lifting lug, a mounting groove is formed in the top surface of the lifting lug mounting part in the height direction of the battery shell, and an assembly hole penetrating through the lifting lug mounting part is formed in the bottom of the mounting groove; the lifting lug is mounted in the mounting groove, the lifting lug is provided with a connecting hole, the assembling hole is correspondingly communicated with the connecting hole so that a connecting piece can penetrate through the connecting hole, and the connecting piece is used for mounting the battery pack to an electric device. According to the battery shell disclosed by the utility model, the bottom of the lifting lug mounting part can bear the weight of a battery pack together with the lifting lug, and most of the gravity is borne by the lifting lug mounting part, so that the requirement on the mounting strength of the lifting lug can be reduced, the lifting lug can be conveniently welded or connected except for welding, and the cost is reduced.

Description

Technical Field

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

[0002] A battery pack is a power system composed of multiple battery cells and is widely used in electric vehicles, energy storage systems, portable electronic devices and other fields.

[0003] In the related art, a battery pack includes a tray and lifting ears. The tray is used to hold batteries, and the lifting ears are welded to the edge and middle of the tray to facilitate installation of the battery pack on the vehicle body.

[0004] However, the lifting lug needs to bear the weight of the entire battery pack, which places high demands on welding and is costly. Utility Model Content

[0005] In view of the above problems, the present invention provides a battery housing, a battery pack and an electrical device, which can reduce the weight that the lifting lug needs to bear, reduce the requirements for the lifting lug welding, and reduce the cost.

[0006] A first aspect of the present invention provides a battery case for a battery pack, the battery case comprising: a lifting ear mounting portion and a lifting ear; along the height direction of the battery case, the top surface of the lifting ear mounting portion has a mounting groove, the bottom of the mounting groove is provided with an assembly hole that passes through the lifting ear mounting portion; the lifting ear is installed in the mounting groove, the lifting ear has a connecting hole, the assembly hole is correspondingly connected to the connecting hole for a connecting piece to pass through, and the connecting piece is used to install the battery pack to an electrical device.

[0007] In this way, by providing a lifting ear mounting portion, and providing a mounting groove on the lifting ear mounting portion, and providing an assembly hole on the mounting groove, the mounting groove does not pass through the lifting ear mounting portion, so that when the connecting member is passed through the assembly hole and the connecting hole to install the battery pack to an electrical device such as a vehicle body, the bottom of the lifting ear mounting portion can bear the weight of the battery pack together with the lifting ear, and most of the gravity is borne by the lifting ear mounting portion, which can reduce the requirements for the installation strength of the lifting ear, so that the lifting ear can be connected by welding or other connection methods other than welding, thereby reducing costs.

[0008] Moreover, the lifting ear is inserted into the mounting groove so that the lifting ear can serve as a reinforcement rib of the lifting ear mounting portion. When the battery shell is subjected to external force impact along its length or width direction, the lifting ear can improve the impact resistance of the lifting ear mounting portion, thereby ensuring the impact resistance of the battery shell.

[0009] In some embodiments, along the height direction of the battery housing, the thickness of the ear mounting portion is L, the distance from the bottom of the mounting groove to the bottom surface of the ear mounting portion is L1, and 0.2≤L1 / L≤0.5.

[0010] In this way, it is possible to avoid a situation where the distance from the bottom of the mounting groove to the bottom surface of the lifting ear mounting portion is too small, thereby reducing the structural strength of the lifting ear mounting portion at the mounting groove and affecting the lifting effect. It is also possible to avoid a situation where the distance from the bottom of the mounting groove to the bottom surface of the lifting ear mounting portion is too large, thereby causing the weight of the lifting ear mounting portion to be larger, thereby reducing the energy density of the battery pack.

[0011] In some embodiments, along the height direction of the battery housing, the lifting ear includes a first connecting segment and a second connecting segment connected to each other, the first connecting segment is arranged in the mounting groove, and the second connecting segment is connected to the top surface of the lifting ear mounting portion.

[0012] In this way, when installing the lifting ear on the battery housing, it is only necessary to insert the first connecting section into the mounting groove and then connect the second connecting section to the top surface of the lifting ear mounting portion, which makes it easier to install the lifting ear on the lifting ear mounting portion.

[0013] In some embodiments, perpendicular to the axial direction of the connecting hole, the second connecting segment protrudes from the outer peripheral surface of the first connecting segment, and a side surface of the second connecting segment facing the first connecting segment is bonded to the top surface of the ear mounting portion.

[0014] In this way, by bonding the second connecting section to the top surface of the ear mounting portion, it is not only convenient to connect the ear to the ear mounting portion, thereby reducing production costs, but also there will be no foreign matter such as welding slag, effectively avoiding abnormal noise and damage in the battery pack, and improving the safety performance of the battery pack.

[0015] In some embodiments, a glue groove is provided on a surface of one side of the second connecting section facing the first connecting section, and connecting glue is provided in the glue groove. The ear is connected to the top surface of the ear mounting portion through the connecting glue.

[0016] In this way, by setting up the glue groove, it is not only convenient to place the connecting glue between the second connecting section and the side beam, but also the contact area between the connecting glue and the second connecting section can be increased, thereby improving the stability of the connecting glue connecting the second connecting section and the ear mounting part.

[0017] In some embodiments, the glue groove is arranged around the first connecting segment along the circumference of the first connecting segment.

[0018] In this way, the length of the glue groove can be guaranteed, thereby increasing the amount of connecting glue used and ensuring the structural strength after the second connecting section is connected to the ear mounting portion.

[0019] In some embodiments, the ratio of the width of the glue groove along the height direction perpendicular to the battery shell to the depth of the glue groove along the height direction of the battery shell is not less than 5; and / or the depth of the glue groove along the height direction of the battery shell is not less than 0.5 mm.

[0020] In this way, by limiting the width and depth of the glue groove, it is avoided that the size of the glue groove is too small, thereby affecting the stability of the connecting glue connecting the second connecting section and the ear mounting portion.

[0021] In some embodiments, the first connecting section is connected to the mounting groove by interference fit or adhesive connection.

[0022] In this way, not only the connection strength between the first connecting section and the lifting ear mounting portion is ensured, but also the production cost is reduced.

[0023] In some embodiments, along the height direction of the battery housing, the bottom surface of the lifting ear contacts the bottom of the mounting groove.

[0024] In this way, after the first connecting section is inserted into the mounting groove, the first connecting section abuts against the bottom of the mounting groove. When the battery housing is installed on the vehicle body, the connecting member passes through the fixing hole and then the connecting member is connected to the vehicle body. Because the first connecting section does not pass through the ear mounting portion, the connecting member does not apply force directly to the first connecting section, which can reduce the force on the ear and ensure the installation strength of the battery housing after it is installed on the vehicle body.

[0025] In some embodiments, the lifting ear is spot-welded to the lifting ear mounting portion.

[0026] In this way, when installing the lifting ear on the lifting ear mounting part, you only need to insert the lifting ear into the mounting groove, and then use spot welding to connect the lifting ear to the lifting ear mounting part. The connection method is simple and convenient, and the welding requirements for the lifting ear are low, thereby reducing production costs.

[0027] In some embodiments, the battery housing includes side beams, which are used to enclose and form a accommodating cavity for accommodating the battery, and the ear mounting portion is provided on the side beams.

[0028] In this way, arranging the lifting ear mounting portion on the side beam not only facilitates connecting the lifting ear to the battery housing, but also ensures the structural strength after the lifting ear and the battery housing are connected.

[0029] In some embodiments, the side beam includes: a vertical support portion and a transverse support portion, the transverse support portion is located on the side of the vertical support portion that is opposite to the accommodating cavity in the horizontal direction, the height of the transverse support portion is smaller than the height of the vertical support portion, and the ear mounting portion is arranged on the transverse support portion.

[0030] In this way, by providing the vertical support portion and the crossbeam support portion, the vertical support portion forms a receiving cavity, and the crossbeam support portion serves as the main body for carrying the lifting ear, thereby ensuring the structural strength of the lifting ear installed on the side beam.

[0031] In some embodiments, the inner cavity of the transverse support portion is provided with a plurality of partition ribs, and the plurality of partition ribs divide the inner cavity of the transverse support portion into a plurality of sub-cavities.

[0032] In this way, by providing a plurality of spacer ribs, the structural strength of the transverse support portion can be improved, thereby improving the structural strength of the battery housing.

[0033] In some embodiments, the battery housing includes a bottom plate and a plurality of side beams connected in sequence, and the bottom plate is connected to the bottom surface of each vertical support portion to form a tray body, so as to jointly enclose a receiving cavity for receiving the battery.

[0034] In this way, by providing a bottom plate and welding the bottom plate to the vertical support portion to form a tray body with an accommodating cavity, the structural strength of the tray body is ensured.

[0035] In some embodiments, the side beam is provided with a plurality of the mounting slots spaced apart along its length direction, and the lifting ears are a plurality of mounting slots corresponding one to one, and each lifting ear is installed in the corresponding mounting slot.

[0036] In this way, multiple mounting grooves are provided on the side beams for mounting multiple lifting ears, thereby ensuring the stability of the battery housing when mounted on the vehicle body.

[0037] In some embodiments, the multiple side beams include: two first side beams that are opposite and spaced apart along a first direction and two second side beams that are opposite and spaced apart along a second direction, the two first side beams and the two second side beams together enclose the accommodating cavity, the first direction and the second direction are perpendicular to each other, and the battery case also includes: filling blocks, the two first side beams and / or the two second side beams are respectively provided with the side of the accommodating cavity facing the accommodating cavity, and the filling blocks are used to adjust the size of the accommodating cavity.

[0038] In this way, when installing different types of batteries on the battery housing, the size of the accommodating cavity needs to be adjusted. The size of the accommodating cavity can be adjusted by simply installing filling blocks of specific specifications on the first side beam and the second side beam, so that the battery housing can be suitable for various types of batteries.

[0039] In some embodiments, the filling block includes: a filling body, wherein the interior of the filling body defines at least one chamber extending along the length direction of the filling body, and at least one of the chambers includes a flue.

[0040] In this way, by setting up a flue, when there is high-temperature and high-pressure gas in the accommodating cavity, the high-temperature and high-pressure gas can flow through the flue to the exhaust port for discharge, preventing the high-temperature and high-pressure gas from running around and causing damage to the accessory battery cells and other components, accelerating heat diffusion and causing safety accidents.

[0041] In some embodiments, there are multiple chambers, one of which constitutes the flue, and the filling block further includes a blocking piece used to block other chambers among the multiple chambers except the flue.

[0042] In this way, by setting up multiple chambers, the weight of the filling body can be reduced to meet the lightweight development of the battery shell. By setting up sealing parts, the redundant chambers can be sealed to prevent the high-temperature and high-pressure gas in the accommodating cavity from entering the redundant chambers, thereby affecting the transportation effect of the flue.

[0043] In some embodiments, the sealing member is a sealant.

[0044] In this way, both ends of the chamber except the flue are sealed by the sealant, which not only ensures the sealing effect of the chamber but also reduces the production cost of the filling body.

[0045] In some embodiments, the filling block is riveted to the side beam.

[0046] In this way, the filling block is riveted to the side beam, which improves the stability of the filling block installed on the side beam.

[0047] A second aspect of the present invention provides a battery pack, comprising: a battery and the above-mentioned battery housing, wherein the battery is arranged in the battery housing.

[0048] A second aspect of the present invention provides an electrical device, comprising: an electrical device and the above-mentioned battery pack, wherein the battery pack is arranged on the electrical device.

[0049] The present invention provides a battery case, a battery pack, and an electrical device, wherein the battery case is provided with a lifting ear mounting portion, a mounting groove is provided on the lifting ear mounting portion, and an assembly hole is provided on the mounting groove. The mounting groove does not penetrate the lifting ear mounting portion, so that when a connector is inserted through the assembly hole and the connection hole to install the battery pack to an electrical device such as a vehicle body, the bottom of the lifting ear mounting portion can bear the weight of the battery pack together with the lifting ear, and most of the gravity is borne by the lifting ear mounting portion, which can reduce the requirements for the installation strength of the lifting ear, so that the lifting ear can be welded or connected in a manner other than welding, thereby reducing costs. Moreover, the lifting ear is inserted into the mounting groove, so that the lifting ear can serve as a reinforcement rib of the lifting ear mounting portion. When the battery case is subjected to an external force impact along its length or width direction, the lifting ear can improve the impact resistance of the lifting ear mounting portion, thereby ensuring the impact resistance of the battery case. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0051] Figure 1 This is a schematic structural diagram of a battery housing according to an embodiment of the present utility model;

[0052] Figure 2 A partial cross-sectional view of a battery housing according to an embodiment of the present invention showing a lifting ear and a transverse support portion;

[0053] Figure 3 This is a schematic diagram of the structure of the lifting ear in the battery housing of an embodiment of the utility model;

[0054] Figure 4 This is a schematic structural diagram of the side beam in the battery housing of an embodiment of the present utility model;

[0055] Figure 5 This is another perspective view of the side beam in the battery housing of an embodiment of the utility model;

[0056] Figure 6 This is a structural schematic diagram of a filling block in a battery housing according to an embodiment of the present utility model.

[0057] Description of reference numerals:

[0058] 10-tray body;

[0059] 100 - ear mounting portion; 101 - mounting slot; 110 - side beam; 111 - vertical support portion; 1111 - reinforcement beam; 112 - transverse support portion; 120 - accommodating cavity; 130 - assembly hole; 140 - bottom plate;

[0060] 200 - lifting ear; 210 - first connecting section; 220 - second connecting section; 221 - adhesive groove; 222 - convex ring; 230 - connecting hole;

[0061] 300-filling block; 310-flue. DETAILED DESCRIPTION

[0062] In order to make the above-mentioned purposes, features and advantages of the embodiments of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0063] A battery pack is a power system composed of multiple cells and is widely used in electric vehicles, energy storage systems, portable electronic devices, and other fields. In related technologies, a battery pack consists of a tray and lifting lugs. The tray holds the batteries, and the lifting lugs are welded to the edges and center of the tray to facilitate mounting the battery pack on the vehicle. However, when the lifting lugs are attached to the tray, they need to support the weight of the entire battery pack, which requires high welding requirements and is costly.

[0064] In view of this, the present invention provides a battery case, a battery pack, and an electrical device, wherein the battery case is provided with a lifting ear mounting portion, and a mounting groove is provided on the lifting ear mounting portion, and an assembly hole is provided on the mounting groove. The mounting groove does not penetrate the lifting ear mounting portion, so that when the connector is passed through the assembly hole and the connection hole to install the battery pack to an electrical device such as a vehicle body, the bottom of the lifting ear mounting portion can bear the weight of the battery pack together with the lifting ear, and most of the gravity is borne by the lifting ear mounting portion, which can reduce the requirements for the installation strength of the lifting ear, so that the lifting ear can be welded or connected in a manner other than welding, thereby reducing costs. Moreover, the lifting ear is inserted into the mounting groove, so that the lifting ear can serve as a reinforcement rib of the lifting ear mounting portion. When the battery case is subjected to an external force impact along its length or width direction, the lifting ear can improve the impact resistance of the lifting ear mounting portion, thereby ensuring the impact resistance of the battery case.

[0065] The following combination Figures 1-6 A battery housing according to an embodiment of the first aspect of the present invention is described.

[0066] refer to Figure 1-Figure 3 The battery housing of this embodiment can be used in a battery pack. The battery pack may include a battery (not shown). At least one battery may be provided. If there are multiple batteries, the batteries may be connected in series and / or in parallel. The battery is a component in the battery pack that stores and supplies energy. The battery housing may include a lifting lug mounting portion 100 and a lifting lug 200.

[0067] Along the height direction of the battery housing, the top surface of the ear mounting portion 100 has a mounting groove 101, and the bottom of the mounting groove 101 is provided with an assembly hole 130 that penetrates the ear mounting portion 100, and the ear 200 is installed in the mounting groove 101.

[0068] The inner side of the lifting ear 200 can also define a connection hole 230 that passes through the height direction of the battery shell. The connection hole 230 is opposite to and connected to the assembly hole 130 for the connection part to pass through, so as to facilitate the installation of the lifting ear 200 on the body of the electrical equipment. The shape of the connection hole 230 is not too restricted.

[0069] It can be understood that since the installation groove 101 does not pass through the ear mounting portion 100, when the connecting piece is passed through the assembly hole 130 and the connecting hole 230 to install the battery pack to an electrical device such as a vehicle body, the bottom of the ear mounting portion 100 can bear the weight of the battery pack together with the ear 200, and most of the gravity is borne by the ear mounting portion 100, which can reduce the requirements for the installation strength of the ear 200, so as to facilitate the use of welding or connection methods other than welding for the ear, thereby reducing costs.

[0070] The battery case of the present application is provided with a lifting ear mounting portion 100, and a mounting groove 101 is provided on the lifting ear mounting portion, and an assembly hole 130 is provided on the mounting groove 101. After the lifting ear 200 is installed in the mounting groove 101, a connector can be used to penetrate the assembly hole 130 and the connection hole 230 to install the battery pack to an electrical device such as a vehicle body. The connection method is simple and convenient. The bottom of the lifting ear mounting portion 100 can bear the weight of the battery pack together with the lifting ear 200, and most of the gravity is borne by the lifting ear mounting portion 100, which can reduce the requirements for the installation strength of the lifting ear 200, so that the lifting ear can be installed by a connection method other than welding, thereby reducing costs. It can also avoid thermal deformation, welding penetration, and the generation of foreign matter such as welding slag on the side beam caused by welding the lifting ear 200, effectively avoiding problems such as abnormal noise in the battery pack, welding slag piercing the battery cell to cause a short circuit, and assembly abnormality, thereby improving the safety performance of the battery pack.

[0071] Optionally, the lifting ear 200 may include a first connecting segment 210 and a second connecting segment 220, wherein the first connecting segment 210 and the second connecting segment 220 are arranged sequentially along the height direction of the side beam 110, the first connecting segment 210 is inserted in the mounting groove 101, and the second connecting segment 220 is located outside the mounting groove 101, and the second connecting segment 220 is bonded or spot welded to the lifting ear mounting portion 100. For example, the first connecting segment 210 is located on the lower side of the second connecting segment 220. When the first connecting segment 210 is inserted in the mounting groove 101, the second connecting segment 220 protrudes from the upper surface of the lifting ear mounting portion 100. At this time, the second connecting segment 220 can be connected to the vehicle body on the one hand, and on the other hand, it can serve as a positioning structure during the assembly process of the lifting ear mounting portion 100 and the vehicle body, so as to facilitate the rapid positioning of the battery pack to the vehicle body of the electrical equipment.

[0072] The connection hole 230 passes through the first connection section 210 and the second connection section 220 along the height direction of the battery shell. The connection hole 230 is used for the connection part to pass through so as to facilitate the installation of the ear 200 on the body of the electrical equipment. The shape of the connection hole 230 is not too limited.

[0073] Exemplarily, the first connecting section 210 and the mounting groove 101 cooperate with each other. The first connecting section 210 can be a prism (such as a quadrangular prism) or a cylinder, and the assembly hole 130 can be a prismatic hole (square hole) or a circular hole. It is only necessary to ensure that the first connecting section 210 can be inserted into the mounting groove 101.

[0074] Exemplarily, the second connecting section 220 and the first connecting section 210 are integrally formed. After the first connecting section 210 is inserted into the mounting groove 101, the second connecting section 220 is located above the hanging ear mounting portion 100, and the outer wall of the second connecting section 220 can be connected to the hanging ear mounting portion 100 by welding or gluing.

[0075] When connecting the above-mentioned battery housing to the vehicle body, a connecting piece, such as a threaded connecting piece, can be used to penetrate upward from the bottom end of the ear mounting part 100 into the first connecting section 210 in the assembly hole 130, and pass through from the upper side of the second connecting section 220 to connect to the vehicle body, wherein the head of the connecting piece can be abutted and matched with the bottom end face of the ear mounting part 100 in the vertical direction. In this way, it can be ensured that most of the gravity of the battery pack is borne by the ear mounting part 100, and since the second connecting section 220 protrudes from the upper surface of the ear mounting part 100, it can serve as an assembly positioning structure between the side beam 110 and the vehicle body, avoiding the ear 200 from being disconnected from the ear mounting part 100 when the gravity of the battery pack is borne by the ear 200, thereby ensuring the reliability of the connection between the ear 200 and the ear mounting part 100.

[0076] Moreover, the first connecting section 210 is inserted into the mounting groove 101 of the ear mounting portion 100, so that the first connecting section 210 can serve as a reinforcement rib of the ear mounting portion 100. When the battery shell is impacted by external force along its length or width direction, the first connecting section 210 can improve the impact resistance of the ear mounting portion 100, thereby ensuring the impact resistance of the battery shell.

[0077] In some embodiments, reference Figure 2 Along the height direction of the battery housing, the thickness of the ear mounting portion 100 is L, the distance from the bottom of the mounting groove 101 to the bottom surface of the ear mounting portion 100 is L1, and 0.2≤L1 / L≤0.5. For example, L1 / L=0.3.

[0078] In this way, it is possible to avoid a situation where the distance from the bottom of the mounting groove 101 to the bottom surface of the lifting ear mounting portion 100 is too small, thereby reducing the structural strength of the lifting ear mounting portion 100 at the mounting groove 101 and affecting the lifting effect. It is also possible to avoid a situation where the distance from the bottom of the mounting groove 101 to the bottom surface of the lifting ear mounting portion 100 is too large, thereby causing the weight of the lifting ear mounting portion 100 to be too large, thereby reducing the energy density of the battery pack.

[0079] In some embodiments, the outer diameter of the second connecting segment 220 is greater than the outer diameter of the first connecting segment 210, that is, the second connecting segment 220 protrudes from the outer circumferential surface of the first connecting segment 210. For example, the first connecting segment 210 and the second connecting segment 220 can be cylindrical segments, and the cross-sections of the first connecting segment 210 and the second connecting segment 220 are T-shaped. The surface of the end of the second connecting segment 220 facing the first connecting segment 210 is bonded to the upper surface of the ear mounting portion 100. For example, the surface of the second connecting segment 220 facing the end of the first connecting segment 210 is flat and abuts against the upper surface of the side beam 110, so as to increase the bonding area between the second connecting segment 220 and the ear mounting portion 100, thereby improving the firmness of the second connecting segment 220 and the ear mounting portion 100 after bonding.

[0080] By adopting the above technical solution, the adhesive area between the second connecting section 220 and the hanging ear mounting portion 100 is increased, thereby improving the stability of the second connecting section 220 after being connected to the hanging ear mounting portion 100.

[0081] Optionally, along the height direction of the battery housing, the bottom surface of the lifting ear 200 contacts the bottom of the mounting groove 101, so as to ensure that the lifting ear 200 is sufficiently deep in the mounting groove 101 and improve the installation reliability.

[0082] In some embodiments, a glue groove 221 is provided on one side surface of the second connecting segment 220 facing the first connecting segment 210. For example, the side surface of the second connecting segment 220 facing the first connecting segment 210 is a plane, and a groove is formed inwardly of the plane. The groove can extend along the circumference of the second connecting segment 220 to form an annular groove. The annular groove serves as the glue groove 221. The cross-sectional shape of the groove can be U-shaped or trapezoidal, and no further restrictions are made here. Connecting glue is provided in the glue groove 221, and the ear 200 is connected to the ear mounting portion 100 through the connecting glue.

[0083] By adopting the above technical solution and setting the glue groove 221, it is not only convenient to place the connecting glue between the second connecting section 220 and the side beam 110, but also the contact area between the connecting glue and the second connecting section 220 can be increased, thereby improving the stability of the connecting glue connecting the second connecting section 220 and the ear mounting portion 100.

[0084] In some embodiments, the ratio of the width of the glue groove 221 along the direction perpendicular to the height of the battery shell to the depth of the glue groove 221 along the height of the battery shell is not less than 5. In other words, the ratio of the width of the glue groove 221 along the radial direction of the lifting ear 200 to the depth of the glue groove 221 along the height direction of the side beam 110 is not less than 5. The ratio of the width of the glue groove 221 along the radial direction of the lifting ear 200 to the depth of the glue groove 221 along the height direction of the side beam 110 can be 5, 5.5, 6, 6.5, 7 or more. Of course, this application is not limited to this. The ratio of the width of the glue groove 221 along the radial direction of the lifting ear 200 to the depth of the glue groove 221 along the height direction of the side beam 110 can be reasonably selected within the above range according to actual needs. It can be understood that the radial width of the glue groove 221 along the ear 200 affects the connection area between the connecting glue and the upper surface of the ear mounting part 100, while the depth of the glue groove 221 along the height direction of the ear mounting part 100 affects the capacity of the connecting glue and the connection area between the connecting glue and the ear 200.

[0085] The depth of the glue groove 221 along the height direction of the battery housing is not less than 0.5 mm. In other words, the depth of the glue groove 221 along the height direction of the side beam 110 is not less than 0.5 mm. For example, the depth of the glue groove 221 along the height direction of the side beam 110 can be 0.7 mm, 0.8 mm, 0.9 mm, 1 mm, or greater. Of course, this application does not impose any restrictions on this. The depth of the glue groove 221 along the height direction of the side beam 110 can be reasonably selected within the above range according to actual needs.

[0086] By limiting the width and depth of the glue groove 221 , it is avoided that the size of the glue groove 221 is too small, resulting in too little amount of connecting glue that can be accommodated in the glue groove 221, thereby affecting the stability of the connecting glue connecting the second connecting section 220 and the side beam 110.

[0087] In some embodiments, a protruding ring 222 is provided on the side of the second connecting section 220, protruding radially outward from the lifting eye 200. After the first connecting section 210 is inserted into the mounting groove 101, the end surface of the protruding ring 222 facing the side beam 110 completely abuts the side beam 110. The adhesive groove 221 is located on the end surface of the protruding ring 222 facing the mounting groove 101.

[0088] By adopting the above technical solution, by setting the convex ring 222, the size of the connecting surface between the second connecting section 220 and the side beam 110 is increased, so that the width of the glue groove 221 along the radial direction of the lifting ear 200 can be increased, thereby ensuring the stability of the connecting glue connecting the second connecting section 220 and the side beam 110.

[0089] In some embodiments, the battery housing includes a plurality of side beams 110, which collectively enclose a receiving cavity 120, and the battery is disposed within the receiving cavity 120. For example, the battery housing may be square in shape, in which case there may be four side beams 110, which are connected end to end to form a square frame structure and define the square receiving cavity 120.

[0090] The ear mounting portion 100 is arranged on the side beam 110. For example, the ear mounting portion 100 and the side beam 110 are an integrated structure. Each side beam 110 is provided with a mounting groove 101. The bottom of the mounting groove 101 is provided with an assembly hole 130. The assembly hole 130 penetrates the side beam 110 along the height direction of the side beam 110. There are multiple assembly holes 130 on each side beam 110, and the multiple assembly holes 130 are arranged at intervals along the length direction of the side beam 110.

[0091] refer to Figure 4-Figure 6 In some embodiments, the side beam 110 may include a vertical support portion 111 and a transverse support portion 112. The transverse support portion 112 is located on a side of the vertical support portion 111 that faces away from the accommodating cavity 120 in the horizontal direction. The height of the transverse support portion 112 is smaller than that of the vertical support portion 111. The mounting groove 101 and the assembly hole 130 are provided on the transverse support portion 112.

[0092] Exemplarily, the vertical support portion 111 and the horizontal support portion 112 are arranged in an L-shape as a whole.

[0093] Exemplarily, the vertical support portion 111 and the horizontal support portion 112 are both hollow cast aluminum profiles, and each of the vertical support portion 111 and the horizontal support portion 112 has a plurality of partitions therein.

[0094] Exemplarily, the upper end of the vertical support portion 111 has a first mounting groove and a second mounting groove, the first mounting groove and the second mounting groove are connected, and the depth of the second connecting groove is greater than the depth of the first mounting groove. When installing the tray cover on the battery housing, first fill the first mounting groove with structural glue, and then abut the tray cover against the vertical support portion 111. At this time, the structural glue will be squeezed, and the excess structural glue will flow to the second mounting groove to prevent the structural glue from being squeezed to the outside of the tray cover and the vertical support portion 111, thereby affecting the appearance.

[0095] Illustratively, the upper end of the vertical support portion 111 facing away from the accommodating cavity 120 has a reinforcing beam 1111 , which is triangular and is used to abut against the tray cover to improve the stability of the tray cover after being connected to the tray body 10 .

[0096] By adopting the above technical solution, by setting the vertical support part 111 and the horizontal support part 112, the vertical support part 111 forms the accommodating cavity 120, and the horizontal support part 112 serves as the main body of the lifting ear 200, thereby ensuring the structural strength of the lifting ear 200 installed on the side beam 110.

[0097] In some embodiments, the inner cavity of the transverse support portion 112 is provided with a plurality of partition ribs, which divide the inner cavity of the transverse support portion 112 into a plurality of sub-cavities. For example, at least some of the partition ribs may extend horizontally, or at least some of the partition ribs may extend vertically, or some of the partition ribs may extend horizontally and some of the partition ribs may extend vertically. In addition, some of the partition ribs may extend obliquely. The cross-sectional shape of the sub-cavities may be square, triangular, trapezoidal, or any other arbitrary shape.

[0098] By adopting the above technical solution and providing a plurality of spacer ribs, the structural strength of the transverse support portion 112 can be improved, thereby improving the structural strength of the battery housing, which is beneficial for better protection of the battery inside.

[0099] Optionally, the inner cavity of the vertical support portion 111 may also be provided with a plurality of second partition ribs, which divide the inner cavity of the vertical support portion 111 into a plurality of second sub-cavities. For example, at least some of the second partition ribs may extend horizontally, or at least some of the second partition ribs may extend vertically, or some of the second partition ribs may extend horizontally and some of the second partition ribs may extend vertically. In addition, some of the second partition ribs may extend obliquely. The cross-sectional shape of the second sub-cavities may be square, triangular, trapezoidal, or any other arbitrary shape.

[0100] In some embodiments, the battery housing further includes a bottom plate 140 . Specifically, the bottom plate 140 may serve as a bottom wall of the accommodating cavity, and the bottom plate 140 is welded to the bottom surface of the vertical support portion 111 .

[0101] For example, the bottom surface of the vertical support portion 111 may be a plane and abut against the peripheral edge of the bottom plate 140 .

[0102] By adopting the above technical solution, bottom plate 140 is provided and welded to the bottom surface of vertical support portion 111. For example, friction stir welding can be used to weld the periphery of bottom plate 140 to the bottom surface of vertical support portion 111, forming a weld seam surrounding the accommodating cavity, thereby improving the welding reliability between bottom plate 140 and vertical support portion 111. Bottom plate 140 and multiple side beams 110 can together form pallet body 10 with accommodating cavity 120, thereby ensuring the structural strength of pallet body 10.

[0103] In some embodiments, each side beam 110 is provided with a plurality of mounting grooves 101 , and the plurality of mounting grooves 101 are arranged at intervals along the length direction of the side beam 110 . There are a plurality of lifting ears 200 corresponding one-to-one to the mounting grooves 101 , and each lifting ear 200 is provided in the corresponding mounting groove 101 .

[0104] Exemplarily, the intervals between two adjacent mounting grooves 101 on the same side beam 110 are the same, so as to ensure uniform force in various areas of the side beam 110 .

[0105] By adopting the above technical solution, a plurality of mounting grooves 101 are provided on the side beam 110 for mounting a plurality of lifting ears 200 , thereby ensuring the stability of the battery housing when mounted on the vehicle body.

[0106] In some embodiments, the multiple side beams 110 include: two first side beams 110 and two second side beams 110, the two first side beams 110 are opposite and spaced apart along a first direction, the two second side beams 110 are opposite and spaced apart along a second direction, the two first side beams 110 and the two second side beams 110 together enclose a accommodating cavity 120, and the first direction and the second direction are perpendicular to each other, wherein the first direction can be along the length direction of the battery shell (that is, the front and rear direction of the electrical equipment), and the second direction can be along the width direction of the battery shell (that is, the left and right direction of the electrical equipment).

[0107] The pallet body 10 may further include a middle beam located in the middle of the accommodating cavity 120 , with both ends of the middle beam respectively connected to the two first side beams 110 or the two second side beams 110 to improve the structural strength of the pallet body 10 .

[0108] The battery case may also include a filling block 300. Specifically, the filling block 300 may be provided on the side of the two first side beams 110 facing the accommodating cavity 120, or may be provided on the side of the two second side beams 110 facing the accommodating cavity 120, so that the filling block 300 plays a role in adjusting the size of the accommodating cavity 120. In this way, when the size of the battery is smaller than the size of the accommodating cavity 120, the filling block 300 may be used to fill the gap between the battery and the side beam 110, thereby ensuring the stability of the battery position and preventing the battery from being displaced due to the bumps of the electrical equipment. In addition, the adaptability of the battery case to different vehicle models can be improved, eliminating the need to develop a corresponding battery case for each vehicle model, thereby reducing product development costs.

[0109] Exemplarily, the filling block 300 is an extruded aluminum profile, which has the advantages of high structural strength and high temperature resistance.

[0110] For example, the filling block 300 and the first side beam 110 and the second side beam 110 may be connected by gluing, riveting, or screws.

[0111] By adopting the above technical solution, when installing different types of batteries on the battery housing, it is necessary to adjust the size of the accommodating cavity 120. It is only necessary to install the filling block 300 of a specific specification on the first side beam 110 and the second side beam 110 to adjust the size of the accommodating cavity 120, so that the battery housing can be suitable for various types of batteries.

[0112] In some embodiments, the filling block 300 includes: a filling body, the inner side of the filling body defines at least one chamber extending along its own length direction, and the at least one chamber includes a flue 310. For example, the filling body may have only one chamber or multiple chambers. When there is only one chamber, the chamber serves as the flue 310. When there are multiple chambers, one of the chambers serves as the flue 310.

[0113] Among them, one of the first side beam 110 and the second side beam 110 has a smoke exhaust port, which connects the outside world with the accommodating cavity 120. When the battery pack has extreme conditions such as thermal runaway, the high-temperature and high-pressure gas in the accommodating cavity 120 can be discharged through the smoke exhaust port.

[0114] The flue 310 is connected to the accommodating chamber 120 and the smoke exhaust port respectively. When there is high-temperature and high-pressure gas in the accommodating chamber 120 , the high-temperature and high-pressure gas can flow to the smoke exhaust port through the flue 310 .

[0115] By adopting the above technical solution and setting up the flue 310, when there is high-temperature and high-pressure gas in the accommodating chamber 120, the high-temperature and high-pressure gas can flow through the flue 310 to the exhaust port for discharge, thereby preventing the high-temperature and high-pressure gas from running around and causing damage to the battery cells and other components, and accelerating heat diffusion to cause safety accidents.

[0116] In some embodiments, there are multiple chambers, and one of the multiple chambers constitutes the flue 310 . For example, the multiple chambers are arranged in sequence along the height direction of the filling body, and the chamber at the top serves as the flue 310 .

[0117] Filling block 300 also includes a sealing member, which is used to seal the other chambers of the multiple chambers except flue 310. For example, the sealing member can be a sealing plug, structural adhesive, or other structural member capable of sealing the flue. The sealing member can have a certain degree of deformation and can seal both ends of the chamber.

[0118] By adopting the above technical solution and setting up multiple chambers, the weight of the filling body can be reduced to meet the lightweight development of the battery shell. By setting up sealing parts, the redundant chambers can be sealed to prevent the high-temperature and high-pressure gas in the accommodating chamber 120 from entering the redundant chambers, thereby affecting the conveying effect of the flue 310.

[0119] In some embodiments, the sealing member may be a sealant.

[0120] By adopting the above technical solution, both ends of the chamber except the flue 310 are sealed by sealant, which ensures the sealing effect of the chamber and reduces the production cost of the filling body.

[0121] In some embodiments, the filling block 300 is riveted to the side beam 110. For example, the filling block 300 has at least one first rivet hole, and the side beam 110 has at least one second rivet hole. Rivets are passed through the first rivet hole and the second rivet hole. Multiple first rivet holes and multiple second rivet holes are spaced apart along the length and width directions of the filling block 300.

[0122] By adopting the above technical solution, the filling block 300 is riveted to the side beam 110, which improves the stability of the filling block 300 installed on the side beam 110. In addition, the connection method is simple and easy to assemble.

[0123] The following describes a battery pack according to an embodiment of the second aspect of the present invention.

[0124] The battery pack includes a battery and the battery housing in the above embodiment. The battery housing has a receiving cavity 120, and the battery is disposed in the receiving cavity 120. There may be multiple batteries, and the multiple batteries may be connected in series or in parallel.

[0125] By adopting the above technical solution, the battery shell is provided with a lifting ear mounting portion 100, and a mounting groove 101 is provided on the lifting ear mounting portion, and an assembly hole 130 is provided on the mounting groove 101, and the lifting ear 200 is provided to include a first connecting section 210 and a second connecting section 220. When installing the lifting ear 200 on the lifting ear mounting portion 100, it is only necessary to insert the first connecting section 210 into the mounting groove 101, and then use glue or spot welding to connect the second connecting section 220 to the side beam 110. The connection method is simple and convenient, which makes it easy to install the lifting ear 200 on the lifting ear mounting portion 100, thereby reducing production costs. When spot welding is used for connection, the welding requirements for the lifting ear 200 are low, which reduces the process cost. When gluing is used, the cost is low, and the side beam will not be thermally deformed, welded through, or produce foreign matter such as welding slag, which effectively avoids problems such as abnormal noise in the battery pack, welding slag piercing the battery cell to cause short circuit, and assembly abnormality, thereby improving the safety performance of the battery pack.

[0126] Moreover, the first connecting section 210 is inserted into the mounting groove 101 of the ear mounting portion 100, so that the first connecting section 210 can serve as a reinforcement rib of the ear mounting portion 100. When the battery shell is impacted by external force along its length or width direction, the first connecting section 210 can improve the impact resistance of the ear mounting portion 100, thereby ensuring the impact resistance of the battery shell.

[0127] The following describes the electrical equipment of the third embodiment of the utility model.

[0128] The electrical equipment includes an electrical device and the battery pack in the above embodiment. The battery pack includes a battery housing and batteries. The battery housing is connected to the electrical equipment via a connector passing through a fixing hole.

[0129] The electric device can be a vehicle or an energy storage device. When the electric device is a vehicle, the electric device can be a new energy vehicle (New Energy Vehicle), such as a pure electric vehicle (Pure Electric Vehicle / Battery Electric Vehicle; referred to as: PEV / BEV), a range extended electric vehicle (Range Extended Electric Vehicle; referred to as: REEV), a hybrid electric vehicle (Hybrid Electric Vehicle; referred to as: HEV), or a fuel cell electric vehicle. The electric device can also be any electric device with a battery. The various embodiments or implementation methods in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referenced to each other.

[0130] It should be noted that phrases such as "one embodiment," "an embodiment," "exemplary embodiments," and "some embodiments" in this specification may indicate embodiments that may include a particular feature, structure, or characteristic, but not every embodiment necessarily includes that particular feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Furthermore, when a particular feature, structure, or characteristic is described in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not.

[0131] Generally speaking, terms should be understood, at least in part, based on the context in which they are used. For example, as used herein, the term "one or more" can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense, depending at least in part on the context. Similarly, terms such as "a," "an," or "the" can also be understood to convey either singular or plural usage, depending at least in part on the context.

[0132] It should be readily understood that “on,” “above,” and “over” in this disclosure should be interpreted in the broadest manner, such that “on” means not only “directly on something,” but also includes “on something” with intervening features or layers therebetween, and “above” or “over” includes not only the meaning of “above” or “over,” but also includes “above” or “over” with no intervening features or layers therebetween (i.e., directly on something).

[0133] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A battery housing, characterized in that: For a battery pack, the battery housing comprises: A lifting ear mounting portion, wherein the top surface of the lifting ear mounting portion has a mounting groove along the height direction of the battery housing, and the bottom of the mounting groove is provided with an assembly hole penetrating the lifting ear mounting portion; A lifting ear is installed in the installation slot, and the lifting ear has a connecting hole. The assembly hole is correspondingly connected to the connecting hole for a connector to pass through. The connector is used to install the battery pack to the electrical device.

2. The battery case according to claim 1, wherein: Along the height direction of the battery housing, the thickness of the ear mounting portion is L, the distance from the bottom of the mounting groove to the bottom surface of the ear mounting portion is L1, and 0.2≤L1 / L≤0.

5.

3. The battery case according to claim 1, wherein: Along the height direction of the battery housing, the lifting ear includes a first connecting section and a second connecting section connected to each other, the first connecting section is arranged in the mounting groove, and the second connecting section is connected to the top surface of the lifting ear mounting portion.

4. The battery case according to claim 3, characterized in that The second connecting section protrudes from the outer peripheral surface of the first connecting section along a direction perpendicular to the axial direction of the connecting hole, and a side surface of the second connecting section facing the first connecting section is bonded to the top surface of the ear mounting portion.

5. The battery case according to claim 4, characterized in that A glue groove is provided on a surface of the second connecting section facing the first connecting section; The glue groove is provided with connecting glue, and the lifting ear is bonded to the top surface of the lifting ear mounting portion through the connecting glue.

6. The battery case according to claim 5, characterized in that The glue groove is arranged around the first connecting section along the circumference of the first connecting section.

7. The battery case according to claim 6, characterized in that The ratio of the width of the adhesive groove along the direction perpendicular to the height of the battery housing to the depth of the adhesive groove along the height of the battery housing is not less than 5; and / or, The depth of the glue groove along the height direction of the battery shell is not less than 0.5 mm.

8. The battery case according to claim 3, characterized in that The first connecting section is connected to the mounting groove by interference fit or adhesive connection.

9. The battery case according to claim 1, characterized in that Along the height direction of the battery housing, the bottom surface of the lifting ear contacts the bottom of the mounting groove.

10. The battery case according to claim 1, wherein: The lifting ear is connected to the lifting ear mounting portion by spot welding.

11. The battery housing according to any one of claims 1 to 10, characterized in that: The battery housing includes side beams, which are used to enclose and form a housing cavity for accommodating the battery, and the ear mounting portion is provided on the side beams.

12. The battery case according to claim 11, wherein: The side beam comprises: A vertical support portion and a transverse support portion, wherein the transverse support portion is located on the side of the vertical support portion that is away from the accommodating cavity in the horizontal direction, the height of the transverse support portion is smaller than the height of the vertical support portion, and the ear mounting portion is arranged on the transverse support portion.

13. The battery case according to claim 12, characterized in that: The inner cavity of the transverse support portion is provided with a plurality of partition ribs, and the plurality of partition ribs divide the inner cavity of the transverse support portion into a plurality of sub-cavities.

14. The battery case according to claim 12, characterized in that: The battery housing includes a bottom plate and a plurality of side beams connected in sequence. The bottom plate is connected to the bottom surface of each vertical support portion to form a tray body, so as to jointly enclose a receiving cavity for receiving the battery.

15. The battery case according to claim 11, characterized in that The side beam is provided with a plurality of the mounting grooves spaced apart along its length direction, and the lifting ears are a plurality of ones corresponding to the mounting grooves, and each of the lifting ears is installed in the corresponding mounting groove.

16. The battery case according to claim 14, characterized in that The plurality of side beams include: two first side beams that are opposite and spaced apart along a first direction and two second side beams that are opposite and spaced apart along a second direction, the two first side beams, the two second side beams, and the bottom plate together enclose the accommodating cavity, and the first direction, the second direction, and the height direction of the battery housing are perpendicular to each other; The battery housing further includes a filling block, which is respectively provided on one side of the two first side beams and / or the two second side beams facing the accommodating cavity, and is used to adjust the size of the accommodating cavity.

17. The battery case according to claim 16, characterized in that: The filling block includes: The filling body defines at least one chamber extending along the length direction of the filling body, and at least one of the chambers includes a flue.

18. The battery case according to claim 17, characterized in that There are multiple chambers, and one of the multiple chambers constitutes the flue; The filling block further includes a blocking piece, which is used to block other chambers among the multiple chambers except the flue.

19. The battery case according to claim 18, characterized in that The sealing member is a sealant.

20. The battery case according to claim 16, wherein: The filling block is connected to the side beam by riveting.

21. A battery pack, characterized in that: include: Battery; The battery housing according to any one of claims 1 to 20, wherein the battery is arranged in the battery housing.

22. An electrical device, characterized in that: include: An electric device and the battery pack according to claim 21, wherein the battery pack is used to supply power to the electric device.

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