Battery box supporting structure and battery cluster

Abstract

The invention relates to a battery box supporting structure and a battery cluster, and relates to the technical field of batteries. The battery box supporting structure is used for supporting at least two stacked battery boxes. The battery box supporting structure comprises a bracket and a supporting seat, and the bracket is arranged below the battery box for supporting. The number of the supporting seats is at least two, the at least two supporting seats are correspondingly arranged on the side portions of the at least two battery boxes, and the supporting seats are fixedly connected with the side walls of the battery boxes. Wherein the supporting seats sequentially abut against and support the battery boxes in the stacking direction, and the supporting seats at the end parts abut against the bracket. The battery box supporting structure provided by the invention can stably support the battery box, reduce the overall volume and weight of the battery cluster, and reduce the overall cost.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular, to a battery box support structure and a battery cluster. Background Art

[0002] In the specific application of power batteries, in order to meet the voltage and current requirements, it is usually necessary to connect multiple battery modules or battery packs in series or in parallel to form a battery cluster.

[0003] In the prior art, when a battery cluster structure is specifically set up, in some cases, a cluster frame is usually set up to support and place multiple battery boxes. In this case, the cluster frame is set up as a frame structure, and the battery boxes are set up in the cluster frame. Alternatively, a bracket can be set up, and then the battery boxes are stacked and placed on the bracket.

[0004] However, when the above two settings are applied in practice, the cluster frame needs to protect the battery box from the outside as a whole because the battery box needs to be placed on the cluster frame. Therefore, the cluster frame needs to be larger as a whole, which not only causes the cluster frame to occupy a larger space and affect the overall energy density of the battery cluster, but also increases the overall weight and cost of the device. When setting up the bracket structure, the battery box at the bottom needs to bear the weight of multiple battery boxes above, so the bottom battery box needs to be thickened to increase its strength, which ultimately increases the volume and weight of the bottom battery box and is more expensive.

[0005] Therefore, there is an urgent need to provide a battery cluster structure that can stably support the battery box while reducing the overall volume and weight of the battery cluster and reducing the overall cost. Summary of the invention

[0006] The purpose of the present application is to provide a battery box support structure and a battery cluster, wherein the battery box support structure can stably support the battery box while reducing the overall volume and weight of the battery cluster, thereby reducing the overall cost.

[0007] In order to achieve the above-mentioned purpose, in the first aspect of the present application, the present application provides a battery box support structure for supporting at least two stacked battery boxes, and the battery box support structure includes a bracket and a support seat. The bracket is arranged under the battery box for support. There are at least two support seats, and at least two support seats are correspondingly arranged on at least two sides of the battery box, and the support seats are fixedly connected to the side walls of the battery box. Among them, the support seats are abutted and supported in sequence along the stacking direction of the battery box, and the support seats at the end abut against the bracket.

[0008] Based on the above-mentioned embodiments of the present application, when multiple battery boxes are stacked, the battery boxes are stacked in sequence and placed on the bracket. At the same time, the support seat is arranged on the side wall of the battery box. When multiple battery boxes are stacked, the support seats on the side of the battery box can abut each other in the vertical direction, so that the support seat below supports the support seat above, and the support seat at the bottom abuts and supports the bracket, thereby realizing the support of multiple support seats in sequence along the stacking direction of the battery box. At this time, the corresponding support seats on each battery box at the bottom share the pressure originally applied to the battery box, and finally transfer the pressure to the bracket at the bottom. Thereby, the strength requirements for the battery box body can be reduced, so that the box body can be set to be relatively thin, reducing the volume and weight of the box body, and reducing the cost. At the same time, in addition to the bottom bracket, each support seat is independently arranged on the side of the battery box, which is less than the overall volume and space occupied by the cluster frame structure in the prior art, thereby improving the overall energy density of the battery pack, while reducing the amount of materials used to reduce costs.

[0009] In some embodiments, any two adjacent support seats located in a first direction are fixedly connected, and the first direction corresponds to a vertical direction.

[0010] Based on the above-mentioned embodiments of the present application, by fixedly connecting two adjacent support seats, the abutment support between the two adjacent support seats in the first direction is made more stable, that is, when the battery boxes are stacked, the supporting effect of the support seats in the gravity direction is enhanced, so that the pressure on the battery box is shared by the setting of the support seats, thereby ensuring the overall strength of the battery cluster while avoiding increasing the size and thickness of the battery box body, thereby reducing the overall volume and weight of the battery cluster and reducing costs.

[0011] In some embodiments, at least four support seats are provided, and at least two support seats are provided on the same side wall of the battery box.

[0012] Based on the above-mentioned embodiments of the present application, by increasing the number of support seats provided on the side walls of a single battery box, the support strength of the battery box support structure composed of the support seats and the bracket as a whole is increased.

[0013] In some embodiments, the support seat includes a connecting portion, a first supporting portion, and a second supporting portion. The connecting portion is disposed on the side wall of the battery box along the first direction and contacts the side wall of the battery box. The first supporting portion and the second supporting portion are disposed at both ends of the connecting portion, respectively, and any two adjacent support seats along the first direction are connected to each other through the first supporting portion of one support seat and the second supporting portion of the other support seat.

[0014] Based on the above-mentioned embodiments of the present application, the surface contact between the support seat and the side wall of the battery box is achieved by setting the connection part, and the connection strength of the connection position between the support seat and the side wall of the battery box is increased by increasing the contact area between the support seat and the side wall of the battery box. At the same time, the force per unit area on the side wall of the battery box can be reduced, so that the side wall of the battery box can be set to be relatively thin. The setting of the first support part and the second support part can facilitate the mutual support between the two support seats in the vertical direction and improve the support effect.

[0015] In some embodiments, the first support portion and the second support portion are respectively perpendicular to the connecting portion, and a first oblique brace is further provided between the first support portion and the connecting portion, and the first oblique brace is obliquely supported between the connecting portion and the first support portion. A second oblique brace is further provided between the second support portion and the connecting portion, and the second oblique brace is obliquely supported between the connecting portion and the second support portion.

[0016] Based on the above-mentioned embodiments of the present application, by providing a first diagonal brace, the first diagonal brace cooperates with the first support portion and the connecting portion to form a triangular support structure, and the stability of the triangle is used to enhance the support strength of the connection position between the first support portion and the connecting portion. Similarly, by providing a second diagonal brace to form a triangular support structure to enhance the support strength of the connection position between the second support portion and the connecting portion. Furthermore, by enhancing the support strength of the connection positions of the first support portion and the second support portion and the connecting portion, respectively, the support strength of the two adjacent support seats along the first direction is higher and more stable when abutting against each other for support.

[0017] In some embodiments, the first support portion extends along the first direction toward a side away from the second support portion and is formed with a first reinforcement portion. The second support portion extends along the first direction toward a side away from the first support portion and is formed with a second reinforcement portion.

[0018] Based on the above embodiments of the present application, the first reinforcing portion can not only enhance the strength of the first supporting portion itself, but also enhance the strength of the connection position between the first supporting portion and the connecting portion. Similarly, the second reinforcing portion can enhance the strength of the second supporting portion itself and the connection position between the second supporting portion and the connecting portion.

[0019] In some embodiments, a first connection hole is provided on the first support portion along the first direction, and the first connection hole sequentially passes through the first support portion and the first reinforcement portion. A second connection hole is provided on the second support portion along the first direction, and the second connection hole sequentially passes through the second support portion and the second reinforcement portion. Any two adjacent support seats along the first direction are connected by a stud, and the stud passes through the first connection hole and the second connection hole.

[0020] Based on the above embodiments of the present application, by providing the first connection hole and the second connection hole, the bolt connection between two adjacent support seats along the first direction is realized with the stud. The bolt connection fixing method not only makes the fixing process convenient and quick, but also increases the connection strength at the connection position between the two.

[0021] According to a second aspect of the present application, a battery cluster is provided, which includes at least two battery boxes and the above-mentioned battery box support structure. At least two battery boxes are stacked along a first direction, the battery boxes are arranged on a bracket, and the support seat is fixedly connected to the side wall of the battery box.

[0022] Based on the above embodiments of the present application, the battery cluster provided by the present application includes the above battery box support structure. Through the arrangement of the above battery box support structure, when multiple battery boxes are stacked, the bracket can be used as a base and as a connection structure between the battery box and the electrical equipment. At the same time, the support seat arranged on the side wall of the battery box can support along the stacking direction of the battery box, share the pressure on the battery box, thereby reducing the pressure on the battery pack itself, and then the battery pack can be set to be relatively thin, which can not only reduce space occupation, but also reduce material usage, improve energy density and reduce the overall cost of the battery box.

[0023] In some embodiments, at least one of the two ends of the battery box side wall along the first direction is provided with a flange, and the flange is located between two adjacent support seats along the first direction.

[0024] Based on the above-mentioned embodiments of the present application, by setting a flange on the battery box, and the flange is set between two adjacent support seats, the two adjacent support seats can be connected with the flange when connected, thereby strengthening the connection between the battery box and the support seat. At the same time, at this time, the force applied to the support seat in most cases is mainly pressure along the first direction, so the force applied by the support seat on the flange is mainly pressure along the first direction, and the pulling force on the flange is relatively small, so the strength requirement for the flange itself is relatively low, and the flange can be set to be relatively thin, thereby avoiding a large impact on the overall size of the battery cluster in the first direction.

[0025] In some embodiments, the first support portion is located above the second support portion, and the bottom surface of the battery box is lower than the upper surface of the second support portion.

[0026] Based on the above-mentioned embodiments of the present application, since the support base is connected to the side wall of the battery box, by setting the bottom surface of the battery box lower than the upper surface of the second support part, it can be ensured that there is a certain overlapping area between the second support part and the side wall of the battery box when the support base is connected, thereby enhancing the strength of the second support part through the connection between the support base and the side wall of the battery box, and reducing the possibility of damage to the second support part when the support base is subjected to force.

[0027] Other features and advantages of the present application will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings are used to provide a further understanding of the present application and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present application but do not constitute a limitation to the present application. In the accompanying drawings:

[0029] Figure 1 It is a schematic diagram of the structure of a battery cluster provided in an embodiment of the present application.

[0030] Figure 2 It is a structural schematic diagram of the battery box support structure provided in an embodiment of the present application.

[0031] Figure 3 It is a structural schematic diagram of a support seat in a battery box support structure provided in an embodiment of the present application.

[0032] Figure 4 yes Figure 1 A magnified schematic diagram of area A in the middle.

[0033] Figure 5 yes Figure 2 A magnified schematic diagram of area B.

[0034] Description of Reference Numerals

[0035] 1. Battery box; 2. Bracket; 3. Support seat; 31. Connecting part; 32. First supporting part; 33. Second supporting part; 34. First diagonal brace; 35. Second diagonal brace; 36. First reinforcing part; 37. Second reinforcing part; 38. First connecting hole; 39. Second connecting hole; 4. Flanging; 5. Positioning structure; 6. Stud. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0037] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution 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 part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. 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 the present application.

[0039] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0040] In the description of this application, it should be noted that, in the absence of any contrary explanation, the terms "inside", "outside", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the application is usually placed when in use, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0041] In the description of this application, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0042] In the prior art, when the battery cluster structure is specifically set up, in some cases, a cluster frame is usually set up to support and fix multiple battery packs. In this case, the cluster frame is set up as a frame structure, and the battery packs are set up in the cluster frame. Alternatively, a bottom bracket can be set up, and then the battery packs are stacked and placed on the bottom bracket.

[0043] However, when the above two configurations are used in specific applications, when the cluster frame structure is set up, since the battery pack needs to be placed on the cluster frame as a whole, the cluster frame not only needs to set up multiple column structures along the vertical direction, but also needs to set up multiple crossbar structures between the column structures for supporting the battery pack. In addition, it is usually necessary to set up a diagonal brace structure on the outside to prevent the battery pack from sliding to the side while strengthening the connection between the column structures. The above configuration results in a large overall space occupation of the cluster frame structure, which not only affects the overall energy density of the battery cluster, but also increases the overall weight and cost of the battery cluster.

[0044] When set as a bottom bracket structure, multiple battery packs are stacked on the bottom bracket. At this time, except for the top battery pack, other battery packs need to bear the weight of other battery packs above them. Therefore, the battery pack needs to increase its own strength by thickening the battery pack case, etc., to avoid the battery pack being compressed, deformed and damaged. The above setting will lead to an increase in the volume and weight of the battery pack, and the increase in material usage will lead to higher costs.

[0045] In order to solve the above problems in the prior art, Figure 1 and Figure 2 As shown in, according to the first aspect of the present application, there is provided a battery box support structure for supporting at least two stacked battery boxes 1, the battery box support structure comprising a bracket 2 and a support seat 3. The bracket 2 is arranged below the battery box 1 for support. There are at least two support seats 3, at least two support seats 3 are correspondingly arranged on the sides of at least two battery boxes 1, and the support seats 3 are fixedly connected to the side walls of the battery box 1. Among them, the support seats 3 are abutted and supported in sequence along the stacking direction of the battery boxes 1, and the support seats 3 at the end abut against the bracket 2.

[0046] Based on the above-mentioned embodiments of the present application, when multiple battery boxes 1 are stacked, the battery boxes 1 are stacked in sequence and placed on the bracket 2. At the same time, the support seat 3 is arranged on the side wall of the battery box 1, and the support seats 3 on the side of the battery box 1 can abut against each other in the vertical direction, so that the support seat 3 below supports the support seat 3 above, and the support seat 3 located at the bottom abuts against the bracket 2 for support, thereby realizing the sequential support of multiple support seats 3 along the stacking direction of the battery box 1. At this time, the corresponding support seats 3 on each battery box 1 at the bottom share the pressure originally applied to the battery box 1, and finally transfer the pressure to the bracket 2 at the bottom. Thereby, the strength requirements for the battery box 1 body can be reduced, so that the body can be set to be relatively light and thin, reducing the volume and weight of the body, while reducing the amount of materials used to reduce costs.

[0047] At the same time, except for the bracket 2 at the bottom, each support seat 3 is independently arranged on the side of the battery box 1. Compared with the cluster frame structure in the prior art, the battery box support structure composed of the bracket 2 and the support group 3 in the present application has a smaller overall volume and space occupancy, thereby improving the overall energy density of the battery pack while reducing costs.

[0048] Specifically, when multiple battery boxes 1 are stacked in sequence on the bracket 2, the pressure applied to the battery boxes 1 gradually increases from the top one to the bottom one. The battery box 1 at the bottom needs to be subjected to the pressure brought by the weight of other battery boxes 1 except itself, and the direction of the force is consistent with the stacking direction of the multiple battery boxes 1, usually along the thickness direction of the battery box 1.

[0049] Therefore, in the prior art, in order to prevent the bottom battery box 1 from being deformed by pressure and causing damage to the battery cells, the body of the bottom battery box 1 needs to be thickened or replaced with a higher strength material. Of these two methods, the former will increase the volume and cost of the battery box 1, while the latter will usually increase the cost of the battery box 1. At the same time, not only the body of the battery box 1 at the bottom needs to be strengthened, but the bodies of the multiple battery boxes 1 above need to be strengthened to varying degrees, which will increase the overall volume and cost of the battery cluster.

[0050] Furthermore, when stacking the battery boxes 1, in one case, multiple battery boxes 1 need to be arranged in sequence according to the different strengths of the boxes, so that the battery boxes 1 at different positions can withstand the corresponding pressure, and the stacking process is relatively cumbersome. In another case, the box of each battery box 1 needs to be strengthened so that it can meet the strength requirements when it is set at the bottom, and the overall cost of the battery cluster is relatively high.

[0051] By setting the support seat 3 mentioned above in the present application, the weight of the battery box 1 itself and the pressure it receives are transmitted to the support seat 3 through the connection between the side wall of the battery box 1 and the support seat 3, so that the support seat 3 shares the weight, and the support seats 3 on two adjacent battery boxes 1 abut against each other, finally realizing the abutment support between multiple support seats 3 in sequence, and the bottom support seat 3 abuts against the bracket 2 for support, and finally transmits the pressure to the bracket 2. In this way, the strength requirements for the battery box 1 can be reduced, so that the box can be set to be relatively light and thin, and the support seat 3 itself is independently set, compared with the structure of the cluster frame, it occupies less space and costs, so it can reduce the overall volume and weight of the battery cluster, while reducing costs.

[0052] Furthermore, when the battery boxes 1 are stacked, the pressure on the battery boxes 1 mainly acts on the side walls of the battery boxes 1 along the thickness direction of the battery boxes 1. The arrangement of the support seat 3 of the present application can play an effect similar to that of a reinforcing rib, thereby locally reinforcing the side walls of the battery boxes 1 without changing the structural dimensions of the battery boxes 1 themselves, so as to meet the strength requirements.

[0053] In addition, it should be noted that the bracket 2 in this application is arranged at the bottom of the battery box 1, and is mainly used to support multiple stacked battery boxes 1. At the same time, when the battery box 1 is installed and connected to the electrical equipment, for example, when it is applied to a structure such as a frame, the bracket 2 is directly connected to the frame to achieve the assembly and fixation of the battery cluster and the frame. In this process, the specific structure and material of the bracket 2 can be set according to factors such as the number of battery boxes 1 and the strength requirements of the bracket 2. The specific connection position and connection method between the bracket 2 and the frame can be set according to industry standards, and this application does not impose specific restrictions on this.

[0054] refer to Figure 1 As shown in , in an exemplary embodiment provided in the present application, the bracket 2 is configured as a frame structure, and the main body of the frame structure can be processed from a metal profile or a hollow metal tube. The bracket 2 and the support seat 3 and the bracket 2 and the battery box 1 can be connected by any suitable connection method including welding, bolt connection and riveting.

[0055] refer to Figure 1 As shown in , in some embodiments of the present application, any two adjacent support seats 3 located in a first direction can be fixedly connected, and the first direction corresponds to the vertical direction.

[0056] Based on the above-mentioned embodiments of the present application, by fixedly connecting two adjacent support seats 3, the abutment support between the two adjacent support seats 3 in the first direction is made more stable, that is, when the battery boxes 1 are stacked, the supporting effect of the support seats 3 in the gravity direction is enhanced, so that the pressure on the battery box 1 is shared by the setting of the support seats 3, thereby ensuring the overall strength of the battery cluster while avoiding increasing the size and thickness of the battery box 1, thereby reducing the overall volume and weight of the battery cluster and reducing costs.

[0057] Specifically, in the actual assembly process, any two adjacent support seats 3 along the first direction can be fixed by various methods such as welding, bonding, riveting and bolting. The specific settings can be based on factors such as connection strength requirements, and the present application does not impose any specific restrictions on this.

[0058] In addition, it should be noted that the first direction in the present application corresponds to the vertical direction, which means that multiple battery boxes 1 are usually arranged along the vertical direction when stacked. At this time, the gravity direction of the battery box 1 is along the vertical direction. Therefore, setting the support base 3 along the first direction can make the force direction consistent with the direction of the support base 3 itself, thereby avoiding problems such as the support base 3 tilting when subjected to force.

[0059] refer to Figure 1 and Figure 2 As shown in , in some embodiments, at least four support seats 3 are provided, and at least two support seats 3 are provided on the same side wall of the battery box 1 .

[0060] Based on the above-mentioned embodiments of the present application, by increasing the number of support seats 3 provided on the side walls of a single battery box 1, the support strength of the battery box support structure formed by the support seats 3 and the bracket 2 as a whole is increased.

[0061] Furthermore, in the specific setting, the number of support seats 3 on the side wall of a single battery box 1 can be set to an even number as much as possible, such as four, six, eight, and ten, etc. At this time, the support seats 3 can be divided into two groups, and the two groups of support seats 3 are correspondingly arranged on the two opposite side walls of the battery box 1, so that the support effect of the support seats 3 on the battery box 1 is more uniform, and the battery box 1 is prevented from deflecting to one side due to uneven force on both sides. At the same time, when there are three or more support seats 3 on the side wall of the same side of the battery box 1, the support seats 3 can be arranged at equal intervals, so as to further improve the uniformity of the support of the support seats 3 on the battery box 1.

[0062] In the present application, the support base 3 can be configured as any suitable structure.

[0063] refer to Figure 3 As shown in , in an exemplary embodiment provided in the present application, the support seat 3 may include a connecting portion 31, a first supporting portion 32, and a second supporting portion 33. The connecting portion 31 is arranged on the side wall of the battery box 1 along the first direction and contacts the side wall surface of the battery box 1. The first supporting portion 32 and the second supporting portion 33 are respectively arranged at both ends of the connecting portion 31, and between any two adjacent support seats 3 along the first direction, the first supporting portion 32 of one support seat 3 and the second supporting portion 33 of the other support seat 3 are mutually connected.

[0064] Based on the above-mentioned embodiment of the present application, the surface contact between the support seat 3 and the side wall of the battery box 1 is achieved by setting the connection portion 31, and the connection strength of the connection position between the support seat 3 and the side wall of the battery box 1 is increased by increasing the contact area between the support seat 3 and the side wall of the battery box 1. At the same time, the force per unit area on the side wall of the battery box 1 can be reduced, so that the side wall of the battery box 1 can be set to be relatively thin. The setting of the first support portion 32 and the second support portion 33 can facilitate the mutual support between the two support seats 3 in the vertical direction, thereby improving the support effect.

[0065] Specifically, when the support base 3 and the side wall of the battery box 1 are fixed by welding, the connection part 31 and the side wall of the battery box 1 are in surface contact and welded, so that the welding area between the two can be expanded and the connection strength can be enhanced. When the support base 3 and the side wall of the battery box 1 are fixed by gluing, the entire contact area between the connection part 31 and the side wall of the battery box 1 can be glued and bonded, so as to improve the connection strength. Alternatively, when the connection part 31 and the side wall of the battery box 1 are fixed by bolting or riveting, the number of bolts or rivets can be increased when the contact area between the two is increased, which can also achieve the effect of improving the connection strength of the connection position between the two.

[0066] At the same time, by providing the first supporting portion 32 and the second supporting portion 33 , the contact area between the ends of two adjacent supporting seats 3 can be increased, thereby making it more stable when the two adjacent supporting seats 3 abut against each other for support.

[0067] refer to Figure 3 As shown in , in some embodiments of the present application, the first support portion 32 and the second support portion 33 may be respectively perpendicular to the connecting portion 31, and a first diagonal brace 34 may be further provided between the first support portion 32 and the connecting portion 31, and the first diagonal brace 34 is obliquely supported between the connecting portion 31 and the first support portion 32. A second diagonal brace 35 may also be provided between the second support portion 33 and the connecting portion 31, and the second diagonal brace 35 is obliquely supported between the connecting portion 31 and the second support portion 33.

[0068] Based on the above-mentioned embodiment of the present application, by setting the first diagonal brace 34, the first diagonal brace 34 cooperates with the first support portion 32 and the connecting portion 31 to form a triangular support structure, and the stability of the triangle is used to enhance the support strength of the connection position of the first support portion 32 and the connecting portion 31. Similarly, by setting the second diagonal brace 35 to form a triangular support structure to enhance the support strength of the connection position of the second support portion 33 and the connecting portion 31. Further, by enhancing the support strength of the connection positions of the first support portion 32 and the second support portion 33 and the connecting portion 31, the support strength of the two adjacent support seats 3 along the first direction is higher and more stable when abutting support is performed.

[0069] Specifically, in a specific configuration, the first diagonal brace 34 and the second diagonal brace 35 can be configured as any appropriate structure. Figure 3 As shown in , in an exemplary embodiment provided by the present application, the first diagonal brace 34 is provided between the first support portion 32 and the connecting portion 31 in the form of a reinforcing rib, and the second diagonal brace 35 is also provided between the second support portion 33 and the connecting portion 31 in the form of a reinforcing rib. At the same time, a plurality of reinforcing ribs may be provided, and connecting ribs may be provided between the plurality of reinforcing ribs to connect the plurality of reinforcing ribs to each other, thereby further improving the strength and supporting effect of the first diagonal brace 34 and the second diagonal brace 35.

[0070] refer to Figure 3 As shown in some embodiments of the present application, the first support portion 32 extends along the first direction toward a side away from the second support portion 33 and is formed with a first reinforcement portion 36. The second support portion 33 extends along the first direction toward a side away from the first support portion 32 and is formed with a second reinforcement portion 37.

[0071] Based on the above-mentioned embodiments of the present application, the first reinforcing portion 36 is provided to not only enhance the strength of the first supporting portion 32 itself, but also enhance the strength of the connection position between the first supporting portion 32 and the connecting portion 31. Similarly, the second reinforcing portion 37 is provided to enhance the strength of the second supporting portion 33 itself and the connection position between the second supporting portion 33 and the connecting portion 31.

[0072] refer to Figure 3 As shown in , in an exemplary embodiment provided in the present application, a first connection hole 38 may be opened on the first support portion 32 along the first direction, and the first connection hole 38 sequentially penetrates the first support portion 32 and the first reinforcement portion 36. A second connection hole 39 may be opened on the second support portion 33 along the first direction, and the second connection hole 39 sequentially penetrates the second support portion 33 and the second reinforcement portion 37. Any two adjacent support seats 3 along the first direction are connected by a stud 6, and the stud 6 passes through the first connection hole 38 and the second connection hole 39.

[0073] Based on the above-mentioned embodiment of the present application, the bolt connection between two adjacent support seats 3 along the first direction is realized by opening the first connection hole 38 and the second connection hole 39, and cooperating with the stud 6. The fixing method of bolt connection not only makes the fixing process convenient and fast, but also makes the connection strength of the connection position of the two higher.

[0074] Specifically, when the first reinforcing portion 36 and the second reinforcing portion 37 are respectively extended on the first supporting portion 32 and the second supporting portion 33, when two adjacent supporting seats 3 are connected, only the contacting side of the two will be directly welded or bonded when welding or bonding is adopted. At this time, the setting of the first reinforcing portion 36 and the second reinforcing portion 37 will not have too much influence on the strength of the connection position between the two. When two adjacent supporting seats 3 are connected by riveting or bolting, the rivet or bolt needs to directly pass through the first supporting portion 32 and the second supporting portion 33 abutting against each other. At this time, after the first reinforcing portion 36 and the second reinforcing portion 37 are set, the rivet or bolt also passes through the first reinforcing portion 36 and the second reinforcing portion 37, thereby increasing the volume and strength of the contacting portion between the supporting seat 3 and the rivet or bolt, thereby improving the connection strength between the two adjacent supporting seats 3.

[0075] Furthermore, when two adjacent support seats 3 are connected by the stud 6, a single stud 6 can be passed through the adjacent first connecting holes 38 and second connecting holes 39 to connect the two support seats 3, or a long stud 6 can be set to pass through multiple groups of first connecting holes 38 and second connecting holes 39 in sequence, that is, the connection and fixation between multiple support seats 3 can be achieved simultaneously by a single long stud 6. At this time, the connection strength between the multiple support seats 3 is higher and more stable.

[0076] In addition, it should be noted that in the present application, the support seat 3 can be integrated as a whole, that is, multiple structures including the connecting portion 31, the first support portion 32, the second support portion 33, the first reinforcement portion 36, the second reinforcement portion 37, the first diagonal brace 34 and the second diagonal brace 35 can be integrally formed by casting or the like. Through integral forming, not only can the processing and assembly steps be simplified and the processing efficiency be improved, but also the overall strength of the support seat 3 can be enhanced.

[0077] Furthermore, in some embodiments of the present application, the stacked battery boxes 1 can be fixed by gluing, welding or bolting. For example, when gluing, structural glue is injected between any two adjacent battery boxes 1 to strengthen the connection. At the same time, the flexible structural glue can also play a certain buffering effect between the two adjacent battery boxes 1, reducing the damage to the battery boxes 1 when stacked.

[0078] On the basis of the above technical solution, according to the second aspect of the present application, a battery cluster is provided, which includes at least two battery boxes 1 and the above battery box support structure. At least two battery boxes 1 are stacked along a first direction, the battery boxes 1 are arranged on a bracket 2, and the support seat 3 is fixedly connected to the side wall of the battery box 1.

[0079] Based on the above-mentioned embodiments of the present application, the battery cluster provided by the present application includes the above-mentioned battery box support structure. Through the arrangement of the above-mentioned battery box support structure, when multiple battery boxes 1 are stacked, the bracket 2 can be used as a base and as a connection structure between the battery box 1 and the electrical equipment. At the same time, the support seat 3 arranged on the side wall of the battery box 1 can support the battery box 1 along the stacking direction, share the pressure on the battery box 1, thereby reducing the pressure on the battery pack itself, and then the battery pack can be set to be relatively thin, which can not only reduce space occupation, but also reduce the amount of materials used, improve energy density and reduce the overall cost of the battery box 1.

[0080] refer to Figure 4 As shown in , in some embodiments of the present application, at least one of the two ends of the side wall of the battery box 1 along the first direction is provided with a flange 4, and the flange 4 is located between two adjacent support seats 3 along the first direction.

[0081] Based on the above-mentioned embodiment of the present application, by setting the flange 4 on the battery box 1, and the flange 4 is set between two adjacent support seats 3, the two adjacent support seats 3 can be connected with the flange 4 when connected, thereby strengthening the connection between the battery box 1 and the support seat 3. At the same time, at this time, the force applied to the support seat 3 in most cases is mainly pressure along the first direction, so the force applied by the support seat 3 on the flange 4 is mainly pressure along the first direction, and the pulling force on the flange 4 is relatively small, so the strength requirement for the flange 4 itself is relatively low, and the flange 4 can be set to be relatively thin, thereby avoiding a significant impact on the overall size of the battery cluster in the first direction.

[0082] Specifically, when two adjacent support seats 3 are connected by the stud 6 , the flange 4 is arranged between the two support seats 3 , and a through hole can be arranged on the flange 4 , and the stud 6 passes through the two support seats 3 and the flange 4 to achieve fixation.

[0083] Furthermore, during the setting, the flange 4 can be set at the upper end of the side wall of the battery box 1, or at the lower end of the side wall of the battery box 1, or at both the upper end and the lower end of the side wall of the battery box 1. The setting can be made according to the processing and connection requirements, and this application does not impose specific restrictions on this. At the same time, the flange 4 and the side wall of the battery box 1 can be set as one piece, such as by bending and forming by stamping, etc., or they can be processed separately and then fixedly connected by welding, etc.

[0084] refer to Figure 5 As shown in , in some embodiments of the present application, when a flange 4 is provided on the side wall of the battery box 1, a positioning structure 5 may also be provided on the flange 4, which may be specifically provided as a positioning pin and a positioning hole. The positioning structure 5 can be provided to facilitate positioning of the battery box 1 when multiple battery boxes 1 are stacked, so that the battery boxes 1 can be stacked more neatly and facilitate the abutment between the support seats 3.

[0085] In some embodiments of the present application, the first support portion 32 is located above the second support portion 33 , and the bottom surface of the battery box 1 is lower than the upper surface of the second support portion 33 .

[0086] Based on the above-mentioned embodiments of the present application, since the support seat 3 is connected to the side wall of the battery box 1, by setting the bottom surface of the battery box 1 to be lower than the upper surface of the second support portion 33, it is possible to ensure that there is a certain overlapping area between the second support portion 33 and the side wall of the battery box 1 when the support seat 3 is connected, thereby enhancing the strength of the second support portion 33 through the connection between the support seat 3 and the side wall of the battery box 1, and reducing the possibility of damage to the second support portion 33 when the support seat 3 is subjected to force.

[0087] Specifically, when the support seat 3 is connected to the side wall of the battery box 1, taking welding connection as an example, when the bottom surface of the battery box 1 is higher than the upper surface of the second support part 33, at this time, after the support seat 3 and the side wall of the battery box 1 are welded and fixed, the second support part 33 and the second reinforcement part 37 themselves are not directly connected to the side wall of the battery box 1, but are indirectly connected to the side wall of the battery box 1 through the connecting part 31, that is, at this time, the second support part 33 and the second reinforcement part 37 are in a suspended state. At this time, the end of the support seat 3 where the second support part 33 is located is prone to bending and deformation when subjected to shear force, thereby affecting the supporting effect of the support seat 3.

[0088] When the bottom surface of the battery box 1 is lower than the upper surface of the second support portion 33, when the support base 3 and the side wall of the battery box 1 are welded and fixed, at least a portion of the second support portion 33 can be welded to the side wall of the battery box 1 together with the connecting portion 31, thereby enhancing the resistance of the end of the support base 3 where the second support portion 33 is located to shear force, thereby enhancing the supporting effect of the support base 3.

[0089] Similarly, in some other embodiments of the present application, the connection between the first support portion 32 and the side wall of the battery box 1 can be increased by setting the upper end surface of the battery box 1 higher than the lower surface of the first support portion 32, thereby enhancing the resistance of the end of the support seat 3 where the first support seat 3 is located to shear force, thereby enhancing the supporting effect of the support seat 3.

[0090] In addition, it should be noted that the battery cluster in the present application is not limited to the above structure. When specifically configured, the battery cluster may also be configured with a variety of structural modules as needed, such as a battery management system (BMS), etc., which may be specifically configured according to factors such as the application conditions of the battery cluster, and the present application does not impose any specific restrictions on this.

[0091] The preferred embodiments of the present application are described in detail above in conjunction with the accompanying drawings; however, the present application is not limited to the specific details in the above embodiments. Within the technical concept of the present application, a variety of simple modifications can be made to the technical solution of the present application, and these simple modifications all fall within the protection scope of the present application.

[0092] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this application will not further describe various possible combinations.

[0093] In addition, the various implementation modes of the present application may be arbitrarily combined, and as long as they do not violate the concept of the present application, they should also be regarded as the contents disclosed in the present application.

Claims

1. A battery box support structure, used to support at least two stacked battery boxes, characterized in that: The battery box supporting structure comprises: A bracket is arranged under the battery box for supporting; There are at least two support seats, at least two of which are correspondingly arranged on at least two sides of the battery box, and the support seats are fixedly connected to the side walls of the battery box; The support seats abut against the supports in sequence along the stacking direction of the battery boxes, and the support seats at the end portions abut against the brackets.

2. The battery box support structure according to claim 1, characterized in that: Any two adjacent support seats located in a first direction are fixedly connected, and the first direction corresponds to the stacking direction of the battery boxes.

3. The battery box support structure according to claim 2, characterized in that: At least four support seats are provided, and at least two support seats are provided on the same side wall of the battery box.

4. The battery box support structure according to any one of claims 1 to 3, characterized in that: The support seat comprises a connecting portion, a first supporting portion and a second supporting portion; The connecting portion is disposed on the side wall of the battery box along a first direction and is in contact with the side wall surface of the battery box; The first supporting portion and the second supporting portion are respectively arranged at two ends of the connecting portion, and between any two adjacent supporting seats along the first direction, they are connected to each other through the first supporting portion of one of the supporting seats and the second supporting portion of the other supporting seat.

5. The battery box support structure according to claim 4, characterized in that: The first supporting portion and the second supporting portion are respectively perpendicular to the connecting portion, and a first oblique support is further provided between the first supporting portion and the connecting portion, and the first oblique support is obliquely supported between the connecting portion and the first supporting portion; A second oblique brace is further provided between the second supporting portion and the connecting portion, and the second oblique brace is obliquely supported between the connecting portion and the second supporting portion.

6. The battery box support structure according to claim 4, characterized in that: The first supporting portion extends along a first direction toward a side away from the second supporting portion and is formed with a first reinforcing portion; The second supporting portion extends along a first direction toward a side away from the first supporting portion and is formed with a second reinforcing portion.

7. The battery box support structure according to claim 6, characterized in that: A first connection hole is formed on the first support portion along the first direction, and the first connection hole passes through the first support portion and the first reinforcement portion in sequence; A second connecting hole is formed on the second supporting portion along the first direction, and the second connecting hole passes through the second supporting portion and the second reinforcing portion in sequence; Any two adjacent support seats along the first direction are connected via a stud, and the stud passes through the first connecting hole and the second connecting hole.

8. A battery cluster, characterized in that: The battery cluster comprises: At least two battery boxes, at least two of the battery boxes are stacked along a first direction; and, According to the battery box support structure as described in any one of claims 1 to 7, the battery box is arranged on the bracket, and the support seat is fixedly connected to the side wall of the battery box.

9. The battery cluster according to claim 8, characterized in that: At least one of the two ends of the battery box side wall along the first direction is provided with a flange, and the flange is located between two adjacent support seats along the first direction.

10. The battery cluster according to claim 9, characterized in that: The first support portion is located above the second support portion, and the bottom surface of the battery box is lower than the upper surface of the second support portion.

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