Battery case support structure and battery cluster

Abstract

The present application relates to the technical field of batteries, and relates to a battery case support structure and a battery cluster. The battery case support structure is configured to support at least two stacked battery cases, and the battery case support structure comprises a bracket and support bases. The bracket is arranged below the battery cases for providing support. At least two support bases are provided, the at least two support bases are correspondingly arranged on the side portions of the at least two battery cases, and the support bases are fixedly connected to the side walls of the battery cases. The support bases abut against each other in sequence in a stacking direction of the battery cases for providing support, and the support base at the end abuts against the bracket. The battery case support structure provided by the present application can stably support the battery cases while reducing the overall volume and weight of the battery cluster, thereby reducing the overall cost.

Description

A battery box support structure and battery cluster This application claims priority to Chinese Patent Application No. 2024119410815, filed on December 25, 2024, entitled “A Battery Box Support Structure and Battery Cluster”, the entire contents of which are incorporated herein by reference. Technical Field

[0001] This application relates to the field of battery technology, specifically to a battery box support structure and a battery cluster. Background Technology

[0002] In practical applications, in order to meet voltage and current requirements, multiple battery modules or battery packs are usually connected in series or in parallel to form a battery cluster.

[0003] In existing technologies, when specifically setting up a battery cluster structure, a cluster frame is often used to support and place multiple battery boxes in some cases. In this case, the cluster frame is a frame structure, and the battery boxes are placed inside the cluster frame. Alternatively, a bracket can be used, and the battery boxes can be stacked on the bracket.

[0004] However, in practical applications, both of the above-mentioned setups present challenges. When using a cluster rack, the entire battery box needs to be placed on it, requiring the rack to provide external protection. This necessitates a larger cluster rack, which not only occupies more space and affects the overall energy density of the battery cluster but also increases the overall weight and cost of the device. Conversely, with a bracket structure, the bottom battery box needs to support the weight of multiple battery boxes above it. Therefore, the bottom battery box requires increased strength through thickening or other methods, ultimately increasing its size and weight, and also raising costs.

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

[0006] The purpose of this application is to provide a battery box support structure and a battery cluster. 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] To achieve the above objectives, in a first aspect, this application provides a battery box support structure for supporting at least two stacked battery boxes. The battery box support structure includes a bracket and support seats. The bracket is disposed below the battery boxes to provide support. At least two support seats are provided, correspondingly disposed on the sides of at least two battery boxes, and the support seats are fixedly connected to the side walls of the battery boxes. The support seats abut against each other sequentially along the stacking direction of the battery boxes, and the end support seats abut against the bracket.

[0008] Based on the embodiments described above, when multiple battery boxes are stacked, the battery boxes are stacked sequentially and placed on a bracket. Simultaneously, support seats are provided on the side walls of the battery boxes. When multiple battery boxes are stacked, the support seats on the sides of the battery boxes can abut against each other vertically, thus the lower support seats support the upper support seats, and the bottommost support seat abuts against the bracket, thereby achieving sequential support from multiple support seats along the stacking direction of the battery boxes. At this time, the corresponding support seats on each battery box at the bottom share the pressure originally applied to the battery box and ultimately transmit the pressure to the bottom bracket. This reduces the strength requirements of the battery box body, allowing the box body to be made thinner and lighter, reducing the volume and weight of the box body, and lowering costs. Furthermore, except for the bottom bracket, each support seat is independently located on the side of the battery box, resulting in a smaller overall volume and space occupation compared to the cluster structure in the prior art, thereby increasing the overall energy density of the battery pack and reducing material usage, thus lowering costs.

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

[0010] Based on the above embodiments of this application, by fixing two adjacent support seats together, the abutment support between the two adjacent support seats in the first direction is more stable. That is, when the battery boxes are stacked, the support effect of the support seats in the direction of gravity is improved. Thus, the pressure on the battery box is distributed by the setting of the support seats, 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 bases are provided, with at least two support bases disposed on the same battery box sidewall.

[0012] Based on the above embodiments of this application, by increasing the number of support seats provided on the side wall of a single battery box, the support strength of the battery box support structure, which is composed of support seats and brackets as a whole, is increased.

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

[0014] Based on the embodiments described above, the connection portion enables surface contact between the support base and the battery box sidewall. By increasing the contact area between the support base and the battery box sidewall, the connection strength at the connection point is increased. Simultaneously, the force per unit area on the battery box sidewall is reduced, allowing the battery box sidewall to be made thinner and lighter. Furthermore, the first and second support portions facilitate mutual support between the two vertical support bases, improving 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 diagonal brace is further provided between the first support portion and the connecting portion, the first diagonal brace being inclinedly supported between the connecting portion and the first support portion. A second diagonal brace is further provided between the second support portion and the connecting portion, the second diagonal brace being inclinedly supported between the connecting portion and the second support portion.

[0016] Based on the embodiments described above, by providing a first diagonal brace, which, together with the first support portion and the connecting portion, forms a triangular support structure, the stability of the triangle enhances the support strength at the connection point between the first support portion and the connecting portion. Similarly, by providing a second diagonal brace, a triangular support structure is formed to enhance the support strength at the connection point between the second support portion and the connecting portion. Furthermore, by enhancing the support strength at the connection points between the first and second support portions and the connecting portion, the support strength of two adjacent support seats along the first direction is higher and more stable when they abut against each other.

[0017] In some embodiments, the first support portion extends along a first direction toward a side away from the second support portion and forms a first reinforcing portion. The second support portion extends along the first direction toward a side away from the first support portion and forms a second reinforcing portion.

[0018] Based on the embodiments described above, the provision of the first reinforcing part not only enhances the strength of the first support part itself, but also improves the strength of the connection between the first support part and the connecting part. Similarly, the provision of the second reinforcing part enhances the strength of the second support part itself and the connection between the second support part and the connecting part.

[0019] In some embodiments, a first connecting hole is formed on the first support portion along a first direction, and the first connecting hole passes through the first support portion and the first reinforcing portion sequentially. A second connecting hole is formed on the second support portion along the first direction, and the second connecting hole passes through the second support portion and the second reinforcing portion sequentially. Any two adjacent support seats along the first direction are connected by studs, and the studs pass through the first connecting hole and the second connecting hole.

[0020] Based on the embodiments described above, by opening a first connecting hole and a second connecting hole, and using a stud, a bolted connection is achieved between two adjacent support seats along the first direction. This bolted connection method not only makes the fixing process convenient and quick, but also increases the connection strength at the connection point.

[0021] According to a second aspect of this application, a battery cluster is provided, the battery cluster comprising at least two battery boxes and the aforementioned battery box support structure. The at least two battery boxes are stacked along a first direction, the battery boxes are mounted on a bracket, and the support is fixedly connected to the side wall of the battery boxes.

[0022] Based on the above embodiments of this application, the battery pack provided by this application includes the aforementioned battery box support structure. Through the configuration of this battery box support structure, when multiple battery boxes are stacked, a bracket can serve as a base and a connection structure between the battery box and the electrical equipment. Simultaneously, the support seats disposed on the side walls of the battery box can provide support along the stacking direction of the battery boxes, distributing the pressure on the battery boxes, thereby reducing the pressure on the battery pack itself. This allows the battery pack to be made thinner and lighter, reducing space occupation and material usage, increasing energy density while reducing the overall cost of the battery box.

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

[0024] Based on the embodiments described above, by providing a flange on the battery box and positioning the flange between two adjacent support bases, the two adjacent support bases can connect with the flange during connection, thereby strengthening the connection between the battery box and the support bases. Simultaneously, the force on the support bases is primarily compressive along the first direction, therefore the force exerted by the support bases on the flanges is also mainly compressive along the first direction. The tensile force on the flanges is relatively small, thus the strength requirement for the flanges themselves is lower, allowing for a thinner and lighter flange, thereby avoiding a significant impact on the overall dimensions 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 embodiments of this application, since the support base is connected to the side wall of the battery box, by setting the bottom surface of the battery box to be lower than the upper surface of the second support part, it can be ensured that there is a certain overlap area between the second support part and the side wall of the battery box when the support base is connected. In this way, the strength of the second support part is enhanced by the connection between the support base and the side wall of the battery box, and the possibility of damage to the second support part when the support base is under force is reduced.

[0027] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0028] The accompanying drawings are provided to further illustrate the present application and form part of the specification. They are used together with the following detailed description to explain the present application, but do not constitute a limitation thereof. In the drawings:

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

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

[0031] Figure 3 is a schematic diagram of the support base in the battery box support structure provided in the embodiment of this application.

[0032] Figure 4 is an enlarged schematic diagram of region A in Figure 1.

[0033] Figure 5 is an enlarged schematic diagram of region B in Figure 2. (Explanation of reference numerals)

[0034] 1. Battery box; 2. Bracket; 3. Support base; 31. Connecting part; 32. First support part; 33. Second support 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. Flanged edge; 5. Positioning structure; 6. Stud. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0038] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0039] In the description of this application, it should be noted that, unless otherwise stated, the terms "inner," "outer," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0040] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0041] In existing technologies, when specifically setting up a battery cluster structure, a cluster frame is often used to support and fix multiple battery packs in some cases. In this case, the cluster frame is a frame structure, and the battery packs are placed inside the cluster frame. Alternatively, a bottom support can be used, and the battery packs can be stacked on the bottom support.

[0042] However, in practical applications, when setting up a battery pack rack structure, the rack requires multiple vertical columns and crossbars to support the battery pack. Additionally, diagonal bracing is typically added on the outer sides to prevent the battery pack from sliding laterally and to strengthen the connections between the columns. This setup results in a large overall space requirement for the rack structure, affecting the overall energy density of the battery pack and increasing its weight and cost.

[0043] When the bottom support structure is used, multiple battery packs are stacked on the bottom support. At this time, except for the topmost battery pack, the other battery packs need to bear the weight of the other battery packs above them. Therefore, the battery packs need to increase their strength by thickening the battery pack casing to avoid damage caused by pressure deformation. The above setup will increase the volume and weight of the battery packs, and the increased material usage will lead to higher costs.

[0044] To address the aforementioned problems in the prior art, referring to Figures 1 and 2, according to a first aspect of this application, a battery box support structure is provided for supporting at least two stacked battery boxes 1. The battery box support structure includes a bracket 2 and support bases 3. The bracket 2 is disposed below the battery boxes 1 for support. At least two support bases 3 are provided, correspondingly disposed on the sides of at least two battery boxes 1, and the support bases 3 are fixedly connected to the side walls of the battery boxes 1. The support bases 3 sequentially abut against the battery boxes 1 along the stacking direction, and the end support bases 3 abut against the brackets 2.

[0045] Based on the embodiments described above, when multiple battery boxes 1 are stacked, the battery boxes 1 are stacked sequentially and placed on the bracket 2. Simultaneously, support seats 3 are disposed on the side walls of the battery boxes 1. The support seats 3 on the sides of the battery boxes 1 can abut against each other in the vertical direction, thus supporting the upper support seat 3 with the lower support seat 3. The lowest support seat 3 abuts against the bracket 2 for support, thereby achieving sequential support from multiple support seats 3 along the stacking direction of the battery boxes 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 ultimately transmit the pressure to the bottom bracket 2. This reduces the strength requirements of the battery box 1 body, allowing the body to be made thinner and lighter, reducing the volume and weight of the body, while also reducing material usage and thus lowering costs.

[0046] Meanwhile, apart from the bottom bracket 2, each support 3 is independently set on the side of the battery box 1. Compared with the cluster structure in the prior art, the battery box support structure composed of the bracket 2 and the support group 3 in this application has a smaller overall volume and space occupation, thereby improving the overall energy density of the battery pack and reducing costs.

[0047] Specifically, when multiple battery boxes 1 are stacked sequentially on the bracket 2, the pressure on the battery boxes 1 gradually increases from the topmost one to the bottommost one. The bottommost battery box 1 needs to be subjected to the pressure from the weight of the other battery boxes 1 besides itself. 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.

[0048] Therefore, in existing technologies, to prevent the bottom battery box 1 from deforming under pressure and damaging the battery cells, the casing of the bottom battery box 1 needs to be thickened or replaced with a higher-strength material. The former increases the volume and cost of the battery box 1 casing, while the latter typically increases the cost of the battery box 1 casing. Furthermore, not only does the bottom battery box 1 need reinforcement, but the casings of the subsequent battery boxes 1 all need varying degrees of reinforcement, which further increases the overall volume and cost of the battery cluster.

[0049] Furthermore, when stacking the aforementioned battery boxes 1, in one scenario, multiple battery boxes 1 need to be arranged sequentially according to their different strengths to ensure that each battery box 1 in a different position can withstand the corresponding pressure, making the stacking process quite cumbersome. In another scenario, the body of each battery box 1 needs to be reinforced to meet the strength requirements when placed at the bottom, resulting in a higher overall cost for the battery cluster.

[0050] Through the aforementioned support base 3 in this application, the weight of the battery box 1 and the pressure it experiences are transmitted to the support base 3 through the connection between the side wall of the battery box 1 and the support base 3, thus sharing the load. Furthermore, the support bases 3 on adjacent battery boxes 1 abut against each other, ultimately achieving sequential abutment support among multiple support bases 3. The bottommost support base 3 abuts against the bracket 2, ultimately transmitting the pressure to the bracket 2. This reduces the strength requirements of the battery box 1 body, allowing for a thinner and lighter design. Since the support base 3 is independently installed, it occupies less space and costs compared to structures like battery clusters, thus reducing the overall volume and weight of the battery cluster and lowering costs.

[0051] Furthermore, when the battery boxes 1 are stacked, the pressure on the battery boxes 1 mainly acts on the side wall of the battery boxes 1 along the thickness direction of the battery boxes 1. The support seat 3 of this application can play a role similar to a reinforcing rib, and can locally strengthen the side wall of the battery boxes 1 without changing the structural dimensions of the battery boxes 1, so as to meet the strength requirements.

[0052] Furthermore, it should be noted that in this application, the bracket 2 is located at the bottom of the battery box 1, primarily for supporting multiple stacked battery boxes 1. When the battery box 1 is specifically installed and connected to electrical equipment, such as when applied to a vehicle frame, the bracket 2 directly connects to the frame, achieving assembly and fixation of the battery pack to the frame. During this process, the specific structure and material of the bracket 2 can be determined based on factors such as the number of battery boxes 1 and the strength requirements of the bracket 2. The specific connection position and method between the bracket 2 and the frame can be set according to industry standards, and this application does not impose specific restrictions in this regard.

[0053] Referring to Figure 1, in an exemplary embodiment provided in this application, the bracket 2 is configured as a frame structure, and the main body of the frame structure can be processed from metal profiles or hollow metal tubes. The bracket 2 and the support base 3, as well as the bracket 2 and the battery box 1, can be connected by any suitable connection method, including welding, bolting, and riveting.

[0054] Referring to Figure 1, in some embodiments of this application, any two adjacent support seats 3 located in the first direction can be fixedly connected, and the first direction corresponds to the vertical direction.

[0055] Based on the above embodiments of this application, by fixing two adjacent support seats 3 together, the abutment support between the two adjacent support seats 3 in the first direction is more stable. That is, when the battery boxes 1 are stacked, the support effect of the support seats 3 in the direction of gravity is improved. Thus, the pressure on the battery box 1 is shared by the setting of the support seats 3, 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.

[0056] 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 method can be set according to factors such as connection strength requirements, and this application does not impose specific restrictions on this.

[0057] In addition, it should be noted that the first direction in this application corresponds to the vertical direction, which means that when multiple battery boxes 1 are stacked, they are usually arranged in the vertical direction. At this time, the direction of gravity of the battery box 1 is in the vertical direction. Therefore, setting the support base 3 in the first direction can make the direction of force consistent with the direction of the support base 3 itself, so as to avoid problems such as tilting of the support base 3 when subjected to force.

[0058] Referring to Figures 1 and 2, in some embodiments, at least four support bases 3 are provided, and at least two support bases 3 are provided on the same side wall of the battery box 1.

[0059] Based on the above embodiments of this application, by increasing the number of support seats 3 provided on the side wall of a single battery box 1, the support strength of the battery box support structure composed of the support seats 3 and the bracket 2 is increased.

[0060] Furthermore, in specific configurations, the number of support seats 3 on the side wall of a single battery box 1 can be set to an even number, such as four, six, eight, or ten. This allows the support seats 3 to be divided into two groups, with each group corresponding to one of the opposite side walls of the battery box 1. This ensures more even support from the support seats 3, preventing the battery box 1 from shifting to one side due to uneven force distribution. Additionally, when there are three or more support seats 3 on the same side wall of the battery box 1, they can be spaced evenly to further improve the uniformity of support for the battery box 1.

[0061] In this application, the support base 3 can be configured with any suitable structure.

[0062] Referring to FIG3, in an exemplary embodiment provided in this application, the support base 3 may include a connecting portion 31, a first support portion 32, and a second support portion 33. The connecting portion 31 is disposed on the side wall of the battery box 1 along a first direction and contacts the side wall surface of the battery box 1. The first support portion 32 and the second support portion 33 are respectively disposed at both ends of the connecting portion 31, and any two adjacent support bases 3 along the first direction are interconnected through the first support portion 32 of one support base 3 and the second support portion 33 of the other support base 3.

[0063] Based on the embodiments described above, the connection portion 31 enables surface contact between the support base 3 and the side wall of the battery box 1. By increasing the contact area between the support base 3 and the side wall of the battery box 1, the connection strength at the connection point is increased. Simultaneously, the force per unit area on the side wall of the battery box 1 is reduced, allowing the side wall of the battery box 1 to be made thinner and lighter. The first support portion 32 and the second support portion 33 facilitate mutual support between the two vertical support bases 3, improving the support effect.

[0064] Specifically, when the support base 3 is fixed to the side wall of the battery box 1 by welding, the connecting part 31 and the side wall of the battery box 1 are in surface contact and welded, thereby increasing the welding area and enhancing the connection strength. When the support base 3 is fixed to the side wall of the battery box 1 by adhesive, the entire contact area between the connecting part 31 and the side wall of the battery box 1 can be glued, thus improving the connection strength. Alternatively, when the connecting part 31 and the side wall of the battery box 1 are fixed by bolts or riveting, the increased contact area allows for an increase in the number of bolts or rivets, similarly improving the connection strength at the connection point.

[0065] Meanwhile, by providing the first support part 32 and the second support part 33, the contact area at the ends of two adjacent support seats 3 can be increased, thereby making the two adjacent support seats 3 more stable when they abut against each other.

[0066] Referring to Figure 3, in some embodiments of this application, the first support portion 32 and the second support portion 33 may be perpendicular to the connecting portion 31, and a first diagonal brace 34 may be provided between the first support portion 32 and the connecting portion 31, with the first diagonal brace 34 providing inclined support 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, with the second diagonal brace 35 providing inclined support between the connecting portion 31 and the second support portion 33.

[0067] Based on the embodiments described above, by providing a first diagonal brace 34, which, together with the first support portion 32 and the connecting portion 31, forms a triangular support structure, the stability of the triangle enhances the support strength at the connection point between the first support portion 32 and the connecting portion 31. Similarly, by providing a second diagonal brace 35, a triangular support structure is formed to enhance the support strength at the connection point between the second support portion 33 and the connecting portion 31. Furthermore, by enhancing the support strength at the connection points between the first support portion 32 and the second support portion 33 and the connecting portion 31, the support strength of two adjacent support seats 3 along the first direction is higher and more stable when they abut against each other.

[0068] Specifically, in a specific configuration, the first diagonal brace 34 and the second diagonal brace 35 can be configured with any suitable structure. Further referring to Figure 3, in an exemplary embodiment provided in this application, the first diagonal brace 34 is disposed as a reinforcing rib between the first support portion 32 and the connecting portion 31, and the second diagonal brace 35 is similarly formed as a reinforcing rib between the second support portion 33 and the connecting portion 31. Furthermore, multiple reinforcing ribs can be provided, and connecting ribs can be provided between the multiple reinforcing ribs to connect them, thereby further improving the strength and support effect of the first diagonal brace 34 and the second diagonal brace 35.

[0069] Referring to FIG3, in some embodiments of this application, the first support portion 32 extends along a first direction toward the side away from the second support portion 33 and forms a first reinforcing portion 36. The second support portion 33 extends along the first direction toward the side away from the first support portion 32 and forms a second reinforcing portion 37.

[0070] Based on the embodiments described above, the provision of the first reinforcing part 36 not only enhances the strength of the first supporting part 32 itself, but also improves the strength of the connection between the first supporting part 32 and the connecting part 31. Similarly, the provision of the second reinforcing part 37 enhances the strength of the second supporting part 33 itself and the connection between the second supporting part 33 and the connecting part 31.

[0071] Referring to Figure 3, in an exemplary embodiment provided in this application, a first connecting hole 38 may be formed on the first support portion 32 along a first direction, and the first connecting hole 38 passes through the first support portion 32 and the first reinforcing portion 36 in sequence. A second connecting hole 39 may be formed on the second support portion 33 along the first direction, and the second connecting hole 39 passes through the second support portion 33 and the second reinforcing portion 37 in sequence. Any two adjacent support seats 3 along the first direction are connected by studs 6, and the studs 6 pass through the first connecting hole 38 and the second connecting hole 39.

[0072] Based on the embodiments described above, by opening the first connecting hole 38 and the second connecting hole 39, and cooperating with the stud 6, a bolt connection is achieved between two adjacent support seats 3 along the first direction. This bolt connection not only makes the fixing process convenient and quick, but also increases the connection strength at the connection point.

[0073] Specifically, when a first reinforcing part 36 and a second reinforcing part 37 are respectively extended from the first support part 32 and the second support part 33, when two adjacent support seats 3 are connected by welding or bonding, only the sides that are in contact with each other will be directly welded or bonded. In this case, the provision of the first reinforcing part 36 and the second reinforcing part 37 will not have much impact on the strength of the connection position. However, when two adjacent support seats 3 are connected by riveting or bolting, the rivet or bolt needs to pass directly through the abutting first support part 32 and the second support part 33. In this case, after the first reinforcing part 36 and the second reinforcing part 37 are provided, the rivet or bolt also passes through the first reinforcing part 36 and the second reinforcing part 37, thereby increasing the volume and strength of the contact part between the support seat 3 and the rivet or bolt, and thus improving the connection strength between the two adjacent support seats 3.

[0074] Furthermore, when connecting two adjacent support seats 3 with studs 6, either a single stud 6 can pass through 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 sets of first connecting holes 38 and second connecting holes 39 in sequence, that is, a single long stud 6 can simultaneously achieve the connection and fixation between multiple support seats 3. At this time, the connection strength between multiple support seats 3 is higher and more stable.

[0075] Furthermore, it should be noted that in this application, the support base 3 can be integrally formed, meaning that multiple structures, including the connecting part 31, the first support part 32, the second support part 33, the first reinforcing part 36, the second reinforcing part 37, the first diagonal brace 34, and the second diagonal brace 35, can be integrally formed by casting or other methods. Integral forming not only simplifies the processing and assembly steps and improves processing efficiency, but also enhances the overall strength of the support base 3.

[0076] Furthermore, in some embodiments of this application, the stacked battery boxes 1 can be fixed together by means of adhesive bonding, welding, or bolting. For example, when adhesive bonding is used, structural adhesive is injected between any two adjacent battery boxes 1 to strengthen the connection. At the same time, the flexible structural adhesive can also provide a certain buffering effect between two adjacent battery boxes 1, reducing damage to the battery boxes 1 when stacked.

[0077] Based on the above technical solution, according to a second aspect of this application, a battery cluster is provided, the battery cluster including at least two battery boxes 1 and the aforementioned battery box support structure. At least two battery boxes 1 are stacked along a first direction, the battery boxes 1 are mounted on a bracket 2, and a support base 3 is fixedly connected to the side wall of the battery box 1.

[0078] Based on the above embodiments of this application, the battery pack provided by this application includes the aforementioned battery box support structure. Through the configuration of this battery box support structure, when multiple battery boxes 1 are stacked, the bracket 2 can serve as a base and a connection structure between the battery box 1 and the electrical equipment. Simultaneously, the support seat 3 disposed on the side wall of the battery box 1 can provide support along the stacking direction of the battery boxes 1, distributing the pressure on the battery box 1, thereby reducing the pressure on the battery pack itself. This allows the battery pack to be made thinner and lighter, reducing space occupation and material usage, increasing energy density while reducing the overall cost of the battery box 1.

[0079] Referring to Figure 4, in some embodiments of this 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.

[0080] Based on the above embodiments of this application, by providing a flange 4 on the battery box 1 and positioning the flange 4 between two adjacent support seats 3, the two adjacent support seats 3 can be connected to the flange 4 during connection, thereby strengthening the connection between the battery box 1 and the support seats 3. Simultaneously, the force on the support seats 3 is primarily compressive along the first direction, therefore the force exerted by the support seats 3 on the flange 4 is also mainly compressive along the first direction. The tensile force on the flange 4 is relatively small, thus the strength requirement for the flange 4 itself is lower, allowing the flange 4 to be made relatively thin and light, thereby avoiding a significant impact on the overall dimensions of the battery cluster in the first direction.

[0081] Specifically, when two adjacent support seats 3 are connected by studs 6, a flange 4 is set between the two support seats 3, and a through hole can be set on the flange 4. The studs 6 pass through the two support seats 3 and the flange 4 to achieve fixation.

[0082] Furthermore, the flange 4 can be installed either at the upper end of the side wall of the battery box 1, at the lower end of the side wall of the battery box 1, or at both the upper and lower ends of the side wall of the battery box 1. The specific installation can be determined according to the processing and connection requirements, and this application does not impose any specific restrictions on this. Additionally, the flange 4 can be integrally installed with the side wall of the battery box 1, such as by bending it through stamping, or it can be processed separately and then fixedly connected by welding.

[0083] Referring to Figure 5, in some embodiments of this application, when a flange 4 is provided on the side wall of the battery box 1, a positioning structure 5 can also be provided on the flange 4, specifically a positioning pin and a positioning hole, etc. The positioning structure 5 facilitates the positioning of the battery box 1 when multiple battery boxes 1 are stacked, making the battery boxes 1 stacked more neatly and facilitating the contact between the various support seats 3.

[0084] In some embodiments of this 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.

[0085] Based on the above embodiments of this application, since the support base 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 part 33, it can be ensured that there is a certain overlap area between the second support part 33 and the side wall of the battery box 1 when the support base 3 is connected. Thus, the strength of the second support part 33 is enhanced by the connection between the support base 3 and the side wall of the battery box 1, and the possibility of damage to the second support part 33 when the support base 3 is under force is reduced.

[0086] Specifically, when the support base 3 is connected to the side wall of the battery box 1, taking welding as an example, when the bottom surface of the battery box 1 is higher than the upper surface of the second support part 33, after the support base 3 is welded and fixed to the side wall of the battery box 1, the second support part 33 and the second reinforcing part 37 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 reinforcing part 37 are in a suspended state. At this time, the end of the support base 3 where the second support part 33 is located is prone to bending and deformation when subjected to shear force, thereby affecting the support effect of the support base 3.

[0087] When the bottom surface of the battery box 1 is lower than the upper surface of the second support part 33, when the support base 3 is welded and fixed to the side wall of the battery box 1, at least part of the second support part 33 can be welded together with the connecting part 31 to the side wall of the battery box 1, thereby improving the resistance of the second support part 33 on the support base 3 to shear force, and thus improving the support effect of the support base 3.

[0088] Similarly, in other embodiments of this 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 surface of the battery box 1 to be higher than the lower surface of the first support portion 32, thereby improving the resistance of the first support portion 3 on the support base 3 to shear force and thus improving the support effect of the support base 3.

[0089] Furthermore, it should be noted that the battery cluster in this application is not limited to the above structure. In specific settings, the battery cluster can also be equipped with various structural modules as needed, such as a battery management system (BMS). The specific settings can be made according to factors such as the application conditions of the battery cluster, and this application does not impose any specific restrictions on this.

[0090] The preferred embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this application, various simple modifications can be made to the technical solution of this application, and these simple modifications all fall within the protection scope of this application.

[0091] It should also be noted that the various specific technical features described in the above embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this application will not describe the various possible combinations separately.

[0092] Furthermore, various different implementations of this application can be combined in any way, as long as they do not violate the spirit of this application, they should also be regarded as the content disclosed in this application.

Claims

1. A battery box support structure for supporting at least two stacked battery boxes, characterized in that, The battery box support structure includes: A bracket is provided below the battery box for support; The support base is provided in at least two, and the at least two support bases are correspondingly provided on the side of at least two battery boxes, and the support bases are fixedly connected to the side walls of the battery boxes; The support bases are sequentially abutted against the support along the stacking direction of the battery box, and the end support bases abut against the bracket.

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

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

4. The battery box support structure according to any one of claims 1-3, characterized in that, The support base includes a connecting part, a first support part, and a second support part; The connecting part is disposed on the side wall of the battery box along the first direction and contacts the side wall surface of the battery box; The first support portion and the second support portion are respectively disposed at both ends of the connecting portion, and any two adjacent support seats along the first direction are connected to each other through the first support portion of one support seat and the second support portion of the other support seat.

5. The battery box support structure according to claim 4, characterized in that, The first support portion and the second support portion are perpendicular to the connecting portion, and a first diagonal brace is also provided between the first support portion and the connecting portion, the first diagonal brace being inclinedly supported between the connecting portion and the first support portion; A second diagonal brace is also provided between the second support portion and the connecting portion, and the second diagonal brace is inclined to support the connecting portion and the second support portion.

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

7. The battery box support structure according to claim 6, characterized in that, The first support portion has a first connecting hole along the first direction, and the first connecting hole passes through the first support portion and the first reinforcing portion in sequence; The second support portion is provided with a second connecting hole along the first direction, and the second connecting hole passes through the second support portion and the second reinforcing portion in sequence; Any two adjacent support seats along the first direction are connected by studs, the studs passing through the first connecting hole and the second connecting hole.

8. A battery cluster, characterized in that, The battery cluster includes: At least two battery boxes, wherein the at least two battery boxes are stacked along a first direction; and, According to any one of claims 1-7, the battery box is disposed on the bracket, and the support base 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 side wall of the battery box 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 is located above the second support, and the bottom surface of the battery box is lower than the upper surface of the second support.

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