Battery pack box body

Abstract

The utility model discloses a battery pack box body, a battery unit comprises an upper-layer battery unit and a lower-layer battery unit which are vertically arranged, the box body comprises a box body frame, the box body frame is provided with a plurality of first placing areas for accommodating the lower-layer battery unit, and the box body further comprises a bracket arranged at the top of the box body frame; the top of the bracket is provided with a second placing area for accommodating the upper-layer battery unit, the box body frame is provided with a first step part, and the bottom surface of the bracket is propped against the step surface of the first step part so that the bracket is arranged on the box body frame. The bracket is installed on the top of the box body frame to vertically limit the lower-layer battery unit, assembly interference or collision abrasion of the lower-layer battery unit and the upper-layer battery unit can be avoided, and partition protection is achieved. The first step part is arranged to limit the bracket, and in the mounting process, the in-place prompt is realized when the bracket is mounted through the matching and abutting of the step surface of the first step part and the bracket, so that the assembly stability and the assembly efficiency are favorably improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of vehicle battery replacement, and particularly relates to a battery pack box. BACKGROUND

[0002] Electric vehicles have the advantages of zero emission, low noise, high cost performance of operation and maintenance, and are increasingly favored by users.

[0003] With the rapid development of electric vehicles, the popularity rate is rapidly increasing, and the indispensable battery units also diversify. The battery units on the market have more categories and various sizes. In order to optimize the layout of multiple battery units in the prior art, multiple battery units are usually arranged in a battery pack box, and a matching assembly is arranged in the box to fix and install the battery units, so as to realize the centralized installation of the battery units through the battery pack box. However, due to the diversity of the size and specification of the battery, the internal structure of the battery pack box and the components arranged in the internal and having functional cooperation and assembly cooperation with the battery units need to be adjusted for different types of battery units, resulting in a long development cycle. On the other hand, due to the centralized assembly of the battery units, collisions may occur between adjacent battery units during movement, which may easily damage the battery pack. CONTENT OF THE UTILITY MODEL

[0004] The application provides a battery pack box, which optimizes the layout of the battery pack box while ensuring the safety and stability of the placement of the battery units.

[0005] The technical scheme adopted by the application is as follows:

[0006] A battery pack box, wherein the box body is distributed with battery units, the battery units include upper layer battery units and lower layer battery units arranged in a vertical direction, the box body includes a box body frame, the box body frame is provided with a plurality of first placement areas for accommodating the lower layer battery units, the box body further includes a bracket arranged on the top of the box body frame, the bracket is provided with a second placement area on the top for accommodating the upper layer battery units, the box body frame is provided with a first step portion, and the bottom surface of the bracket abuts against the step surface of the first step portion so that the bracket is arranged on the box body frame.

[0007] The present application discloses a battery pack box, which optimizes the layout of the battery pack box while ensuring the safety and stability of the placement of the battery units.

[0008] Meanwhile, the installation of the bracket on the top of the box frame limits the lower battery units in the first placement area in the vertical direction, and forms a partition between the lower battery units and the upper battery units, avoiding assembly interference between the lower battery units and the upper battery units, and avoiding collision and wear between the lower battery units and the upper battery units, thereby achieving partition protection of the lower battery units and the upper battery units, avoiding collision between the upper battery units and the lower battery units, and improving the safety and reliability of the upper and lower battery units arranged in the box.

[0009] In addition, the first step portion is arranged on the box frame, which is beneficial to improve the position stability of the bracket on the box frame, limit the bracket, and through the cooperation and abutment of the step surface of the first step portion and the bracket during installation, the bracket is prompted to be in place during installation, which is beneficial to improve the assembly stability and efficiency.

[0010] In a preferred implementation manner of the battery pack box, the box frame includes two opposite first sealing plates arranged along the length direction of the battery unit and two opposite second sealing plates arranged along the width direction of the battery unit, and the first sealing plates and the second sealing plates enclose to form side walls of the box frame, and the first sealing plates and the second sealing plates have first step portions extending in the horizontal direction on the side facing the battery unit.

[0011] By arranging the first sealing plates and the second sealing plates, the box frame forms an open upper end and a closed surrounding form, thereby forming a battery unit placement space in the enclosed space of the box frame. During assembly, the lower battery units can be placed in the box frame by hoisting, and the box side wall and the bottom do not need to be complexly assembled with the lower battery units, which is beneficial to simplify the box layout, simplify the cooperation and limiting structure of the box interior and the battery unit, and reduce the processing and forming difficulty. When adapting to different specifications of battery units, the box can be adaptively adjusted according to the size of the battery unit.

[0012] In a preferred implementation manner of the battery pack box, the bracket includes a first support portion and a second support portion connected with the box frame, and a third support portion connected with the upper battery unit, the first support portion abuts against the step surface of the first step portion, and the first support portion connects the second support portion and the third support portion.

[0013] The bracket is connected with the box frame through the first support part and the second support part, the assembly positioning stability of the bracket in the box frame is improved, the upper layer battery unit is connected through the third support part, the placement stability of the upper layer battery unit in the bracket is improved, the connection of the first support part and the second support part with the box frame is combined, and the stable placement of the upper layer battery unit at the box frame is realized. Meanwhile, the first support part abuts against the step surface of the first step part when being connected with the box frame, the support stability of the box frame to the bracket is further improved, the first support part is connected with the second support part and the third support part, the overall structural stability of the bracket is improved, and the stable reliability of the bracket when being connected with the box frame and the upper layer battery unit is improved.

[0014] In a preferred implementation manner of the battery pack box, the first support part includes two first support plates parallel to the first sealing plate, and the second support part includes two second support plates parallel to the second sealing plate, the first support plates are fixedly connected with the first sealing plate, and the second support plates are fixedly connected with the second sealing plate.

[0015] By fixing the first support plates and the second support plates to the first sealing plate and the second sealing plate, the fixed connection of the bracket with the box frame is realized, the bracket is limitedly installed in the box frame, the positional stability of the bracket is ensured, the first support plates are parallel to the first sealing plate, and the second support plates are parallel to the second sealing plate, so that the assembly connection of the first support plates with the first sealing plate and the second support plates with the second sealing plate is facilitated, the assembly difficulty is reduced, and the connection stress between the bracket and the box frame is dispersed, and the installation strength and the installation stability of the bracket in different directions are improved.

[0016] In a preferred implementation manner of the battery pack box, the first support part further includes a first bending plate arranged along the length direction of the battery unit, the first bending plate abuts against the step surface of the first step part, and the first bending plate and the first support plate are integrally roll-formed, and the two ends of the second support plate are respectively connected with the first bending plates and the first support plates on the two sides.

[0017] The first support part is in abutment with the step surface of the first step part by the first bent plate, the bracket is stably arranged on the box frame, and the stress at the connection between the bracket and the box frame is dispersed. The first bent plate is arranged along the length direction of the battery cell, which is beneficial to increase the contact area of the first bent plate and the step surface of the first step part, and further improve the placement stability of the bracket. The first bent plate and the first support plate are integrally roll-formed, which is beneficial to improve the material utilization rate, and because the material undergoes multiple compression and bending during the roll-forming process, high-precision size control can be achieved, and the structural strength and quality are improved, the production efficiency is high and the production cost is low, and the bracket is convenient to use. At the same time, the connection of the second support plate with the first support plate and the first bent plate strengthens the connection stability and assembly position accuracy among the three, which is beneficial to improve the overall structural stability of the bracket during assembly and use.

[0018] In a preferred implementation manner of the battery pack box, the third support part includes a plurality of third support plates arranged along the width direction of the battery cell, and both ends of each third support plate are fixed to the first bent plate.

[0019] The plurality of third support plates are fixedly connected with the first bent plates on both sides, which improves the support strength of the bracket in the width direction of the battery cell, and shares the load bearing stress of the upper layer battery cell by the first support part and the second support part, so that the support effect of the bracket on the upper layer battery cell is more stable.

[0020] In a preferred implementation manner of the battery pack box, the third support part further includes a first reinforcing plate arranged at the connection position of the third support plate and the first bent plate.

[0021] The first reinforcing plate strengthens the connection strength at the connection position of the third support plate and the first bent plate, avoids disconnection or stress fracture at the connection position, further improves the overall structural stability of the bracket, and improves the support stability of the bracket on the upper layer battery cell.

[0022] In a preferred implementation manner of the battery pack box, the end portion of the first reinforcing plate extends to both sides and is connected to the first bent plate to form a triangular first reinforcing plate, and the first reinforcing plate is fixedly connected to the first bent plate.

[0023] The extension of the first reinforcing plate increases the connection area of the first reinforcing plate and the first bent plate, improves the connection strength and connection stability, and the triangular structure can further increase the structural strength of the first reinforcing plate, guarantee the position accuracy and connection stability of the third support plate, thereby being beneficial to further realize stable and reliable support on the upper layer battery cell.

[0024] In a preferred implementation of the battery pack box, a partition beam extending along the length direction of the battery cell is arranged in the box frame, the partition beam is roll-formed, and a first placement area is formed between adjacent partition beams and between the partition beam and the side wall of the adjacent box frame.

[0025] The present scheme separates the box frame into multiple first placement areas by arranging the partition beam, realizes the orderly placement of the lower layer battery cells, and realizes the separation and arrangement of the internal space of the box frame. The position of the partition beam realizes the orientation guidance when placing the lower layer battery cells, so that multiple lower layer placement areas are clearly divided in the box frame, avoiding the placement disorder of the lower layer battery cells and ensuring the accurate number and position of the lower layer battery cells placed in the box frame.

[0026] In a preferred implementation of the battery pack box, a bracket is arranged between adjacent partition beams and between the partition beam and the side wall of the adjacent box frame to form multiple second placement areas corresponding to the first placement areas.

[0027] The installation position of the bracket is separated and limited by the partition beam, multiple brackets are arranged, and the multiple brackets respectively carry corresponding upper layer battery cells at corresponding positions. Each bracket is connected with the box frame, which is beneficial to disperse the placement stress of the multiple upper layer battery cells in the box, and the multiple brackets are easy to install separately. When repair and replacement are needed, only the corresponding bracket needs to be processed. The first placement area and the second placement area are one-to-one corresponding by the partition beam and the multiple brackets, so that the overall layout of the box is more beautiful and the partition is more reasonable.

[0028] In a preferred implementation of the battery pack box, the partition beam is provided with a second step portion, the step surface of the second step portion abuts against the bottom surface of the bracket adjacent thereto, and the first support portion is fixed to the side wall of the second step portion.

[0029] The second step portion of the partition beam supports the bracket adjacent thereto, and the first step portion limits and supports the bracket. The first support portion is fixed to the side wall of the second step portion to connect the bracket and the partition beam, which improves the limiting stability of the second step portion to the bracket and strengthens the support strength of the bracket when subjected to the pressure from the upper layer battery cell.

[0030] In a preferred implementation of the battery pack box, a second reinforcing plate is arranged between two adjacent first step portions formed by the first sealing plate and the second sealing plate, and / or between two adjacent first step portions and second step portions formed by the second sealing plate and the partition beam. The second reinforcing plate is fixedly connected with the bottom surface of the bracket.

[0031] The second reinforcing plate is arranged to connect the bracket to the corner connection between the first sealing plate and the second sealing plate, thereby improving the structural strength of the corner, and the bracket is further connected to the first sealing plate and the second sealing plate, thereby further improving the overall structural stability.

[0032] Similarly, the second reinforcing plate is arranged to be fixed to the corner formed at the connection between the outer side wall of the partition beam and the second sealing plate, thereby improving the connection structural strength of the corner, which is beneficial to improving the connection structural strength of the partition beam and the second sealing plate, and is also beneficial to improving the connection stability between the bracket and the partition beam and the second sealing plate, thereby further improving the overall structural stability.

[0033] In a preferred implementation manner of the battery pack box, the first support part and the second support part are connected to the box frame through first fasteners, and / or the third support part is connected to the upper layer battery cell through second fasteners, and / or the first support part is connected to the partition beam through third fasteners, and / or the second reinforcing plate is connected to the bracket through fourth fasteners.

[0034] The first fasteners, the second fasteners, the third fasteners and the fourth fasteners are used to stably connect the bracket to the box frame and the upper layer battery cell.

[0035] Thanks to the above technical solutions, the application has the following beneficial effects:

[0036] The bracket is arranged to divide the box into two layers, thereby increasing the number of battery cells accommodated by the box, realizing orderly distribution of the battery cells in the box through the upper layer and the lower layer, and facilitating centralized management of the battery cells. The simple box structure can accommodate more battery packs of different models and specifications, and the simple box structure facilitates modification of the box to accommodate battery packs of different models and specifications.

[0037] Meanwhile, the bracket fixed on the top of the box frame limits the lower layer battery cell in the first placement area in the vertical direction, and forms a partition between the lower layer battery cell and the upper layer battery cell, thereby avoiding assembly interference between the lower layer battery cell and the upper layer battery cell, and avoiding collision and wear between the lower layer battery cell and the upper layer battery cell, realizing partition protection of the lower layer battery cell and the upper layer battery cell, avoiding collision between the upper layer battery cell and the lower layer battery cell, and improving the safety and reliability of the upper layer and lower layer battery cells in the box.

[0038] In addition, the first step part is arranged on the box frame, which is beneficial to improve the position stability of the bracket on the box frame, limit the bracket, and through the cooperation and abutment of the step surface of the first step part and the bracket during installation, the in-place prompt of the bracket during installation is realized, which is beneficial to improve the assembly stability and assembly efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0039] The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the present application and serve to explain the present application, and do not limit the present application in any manner. In the drawings:

[0040] Figure 1 It is a structure schematic view of the box in an embodiment of the present application;

[0041] Figure 2 It is a position schematic view of the lower layer battery unit in an embodiment of the present application;

[0042] Figure 3 It is a position schematic view of the upper layer battery unit in an embodiment of the present application;

[0043] Figure 4 It is a structure schematic view of the box frame in an embodiment of the present application;

[0044] Figure 5 It is an A part enlarged view of Figure 4 ;

[0045] Figure 6 It is another angle schematic view of the box frame in an embodiment of the present application;

[0046] Figure 7 It is a B part enlarged view of Figure 6 ;

[0047] Figure 8 It is a structure schematic view of the bracket in an embodiment of the present application;

[0048] Figure 9 It is a C part enlarged view of Figure 8 ;

[0049] Figure 10 It is an assembly schematic view of the box frame and the bracket in an embodiment of the present application;

[0050] Figure 11 It is a D part enlarged view of Figure 10 ;

[0051] Figure 12 It is a sectional view of the box in an embodiment of the present application;

[0052] Figure 13is a sectional view of the box body from another angle in an embodiment of the utility model;

[0053] Figure 14 is a structural schematic view of the first reinforcing plate in an embodiment of the utility model;

[0054] Figure 15 is a roller pressing structural schematic view of the first supporting part in an embodiment of the utility model.

[0055] Explanation of reference signs:

[0056] 100-box frame, 110-first sealing plate, 120-second sealing plate, 130-first step part, 140-first placement area;

[0057] 200-carriage, 210-first supporting part, 211-first supporting plate, 212-first bent plate, 220-second supporting part, 221-second supporting plate, 230-third supporting part, 231-third supporting plate, 232-first reinforcing plate, 240-second reinforcing plate, 250-second placement area;

[0058] 300-separating beam, 310-second step part;

[0059] 400-battery cell, 410-upper layer battery cell, 420-lower layer battery cell;

[0060] 510-first fastener, 520-second fastener, 530-third fastener, 540-fourth fastener. DETAILED DESCRIPTION

[0061] In order to more clearly illustrate the overall concept of the present application, the following will be described in detail with reference to the accompanying drawings.

[0062] In the following description, a lot of specific details are set forth in order to facilitate a thorough understanding of the application, but the application can also be implemented in other ways different from those described herein, therefore, the protection scope of the application is not limited by the specific embodiments disclosed below. It should be noted that the embodiments of the application and the features in each embodiment can be combined with each other without conflict.

[0063] In addition, in the description of the present application, it should be understood that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the present application.

[0064] In this application, unless specifically defined otherwise, the terms "mounting", "connected", "connection", "fixed", and the like should be construed broadly and can be either fixed connections or detachable connections, or integral; can be mechanical or electrical connections, or communication; can be direct connection, or indirect connection via intermediate medium, or the internal communication or interaction of two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0065] In this application, unless specifically defined otherwise, the first feature is "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of the specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the application. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples.

[0066] The application provides a battery pack box body, as shown in Figures 1 to 15 The battery cells 400 are distributed in the box body, the battery cells 400 include upper layer battery cells 410 and lower layer battery cells 420 arranged in the vertical direction, the box body includes a box body frame 100, the box body frame 100 is provided with a plurality of first placement areas 140 for accommodating the lower layer battery cells 420, the box body further includes a bracket 200 arranged on the top of the box body frame 100, the bracket 200 is provided with a second placement area 250 on the top for accommodating the upper layer battery cells 410, the box body frame 100 is provided with a first step portion 130, and the bottom surface of the bracket 200 abuts against the step surface of the first step portion 130 so that the bracket 200 is arranged on the box body frame 100.

[0067] The bracket 200 is arranged on the box body to divide the box body into two layers, the number of battery cells 400 accommodated by the box body is increased, the battery cells 400 are orderly distributed in the box body through the upper layer and lower layer placement mode, and the plurality of battery cells 400 can be centrally managed.

[0068] Meanwhile, the installation of the bracket 200 on the top of the box frame 100 limits the lower battery unit 420 located in the first placement area 140 in the vertical direction, and can form a partition between the lower battery unit 420 and the upper battery unit 410, avoiding assembly interference and collision and wear between the lower battery unit 420 and the upper battery unit 410, achieving partition protection of the lower battery unit 420 and the upper battery unit 410, avoiding collision between the upper battery unit 410 and the lower battery unit 420, and improving the safety and reliability of the upper and lower battery units 400 in the box.

[0069] In addition, the first step portion 130 is arranged on the box frame 100, which is beneficial to improve the position stability of the bracket 200 on the box frame 100, limit the bracket 200, and through the cooperation and abutment of the step surface of the first step portion 130 and the bracket 200 during installation, the bracket 200 is prompted to be in place during installation, which is beneficial to improve the assembly stability and efficiency.

[0070] In an embodiment, as shown in Figures 1 to 7 The box frame 100 includes two opposite first sealing plates 110 arranged along the length direction of the battery unit 400 and two opposite second sealing plates 120 arranged along the width direction of the battery unit 400, and the first sealing plate 110 and the second sealing plate 120 are closed to form the side wall of the box frame 100. The side of the first sealing plate 110 and the second sealing plate 120 towards the battery unit 400 has a first step portion 130 extending in the horizontal direction.

[0071] By arranging the first sealing plate 110 and the second sealing plate 120, the box frame 100 forms an open upper end and a closed surrounding shape, thereby forming a battery unit 400 placement space in the enclosed space of the box frame 100. During assembly, the lower battery unit 420 can be placed in the box frame 100 by hoisting, and the box side wall and the bottom do not need to be complexly assembled with the lower battery unit 420, which is beneficial to simplify the box layout, simplify the cooperation and limiting structure of the box interior and the battery unit 400, and reduce the processing and molding difficulty. When adapting to different specifications of the battery unit 400, the box can be adaptively adjusted according to the size of the battery unit 400.

[0072] In an embodiment, as shown in Figures 8 to 11 The bracket 200 includes a first support portion 210 and a second support portion 220 connected with the box frame 100, and a third support portion 230 connected with the upper battery unit 410, the first support portion 210 abuts against the step surface of the first step portion 130, and the first support portion 210 connects the second support portion 220 and the third support portion 230.

[0073] The bracket 200 is connected with the box frame 100 through the first support part 210 and the second support part 220, the assembly positioning stability of the bracket 200 on the box frame 100 is improved, the third support part 230 is connected with the upper layer battery unit 410, the placing stability of the upper layer battery unit 410 on the bracket 200 is strengthened, the connection of the first support part 210 and the second support part 220 with the box frame 100 is combined, and the stable placement of the upper layer battery unit 410 at the box frame 100 is realized. At the same time, the first support part 210 abuts against the step surface of the first step part 130 when being connected with the box frame 100, the support stability of the box frame 100 to the bracket 200 is further improved, and the first support part 210 is connected with the second support part 220 and the third support part 230, the overall structural stability of the bracket 200 is improved, and the stable reliability of the bracket 200 when being respectively connected with the box frame 100 and the upper layer battery unit 410 is strengthened.

[0074] Further, as shown in Figure 8 , Figure 9 , Figure 11 The first support part 210 includes two first support plates 211 parallel to the first sealing plate 110, the second support part 220 includes two second support plates 221 parallel to the second sealing plate 120, the first support plate 211 is fixedly connected with the first sealing plate 110, and the second support plate 221 is fixedly connected with the second sealing plate 120.

[0075] By setting the fixed connection of the first support plate 211 and the second support plate 221 with the first sealing plate 110 and the second sealing plate 120, the fixed connection of the bracket 200 with the box frame 100 is realized, the bracket 200 is installed in the box frame 100, the position stability of the bracket 200 is ensured, the first support plate 211 is parallel to the first sealing plate 110, the second support plate 221 is parallel to the second sealing plate 120, the assembly connection of the first support plate 211 with the first sealing plate 110 and the second support plate 221 with the second sealing plate 120 is facilitated, the assembly difficulty is reduced, and the connection stress between the bracket 200 and the box frame 100 is dispersed, the installation strength and the installation stability of the bracket 200 in different directions are improved.

[0076] Preferably, as shown in Figure 9 , Figure 11 , Figure 15 The first support part 210 further includes a first bending plate 212 arranged along the length direction of the battery unit 400, the first bending plate 212 abuts against the step surface of the first step part 130, and the first bending plate 212 is integrally roll-formed with the first support plate 211, and the two ends of the second support plate 221 are respectively connected with the first bending plate 212 and the first support plate 211 on the two sides.

[0077] The first support part 210 is arranged on the box frame 100 by abutting against the step surface of the first step part 130, and the bracket 200 is stably arranged on the box frame 100, and the stress at the connection between the bracket 200 and the box frame 100 is dispersed. The first bending plate 212 is arranged along the length direction of the battery cell 400, which is beneficial to increase the contact area between the first bending plate 212 and the step surface of the first step part 130, and further improve the placement stability of the bracket 200. The first bending plate 212 is integrally roll-formed with the first support plate 211, which is beneficial to improve the material utilization rate. In addition, the material is subjected to multiple compression and bending during the roll forming process, so that high-precision size control can be realized, and the structural strength and quality are improved. The production efficiency is high and the production cost is low, and the bracket 200 is convenient to use. At the same time, the connection between the second support plate 221 and the first support plate 211 and the first bending plate 212 strengthens the connection stability and assembly position accuracy among the three, which is beneficial to improve the overall structural stability of the bracket 200 during assembly and use.

[0078] In an embodiment, as shown in Figures 8 to 11 The third support part 230 includes a plurality of third support plates 231 arranged along the width direction of the battery cell 400, and the two ends of each third support plate 231 are fixed to the first bending plate 212.

[0079] The plurality of third support plates 231 are fixedly connected with the first bending plates 212 on both sides, which improves the support strength of the bracket 200 in the width direction of the battery cell 400, and shares the load bearing stress of the first support part 210 and the second support part 220 on the upper layer battery cell 410, so that the support effect of the bracket 200 on the upper layer battery cell 410 is more stable.

[0080] In an embodiment, as shown in Figure 14 The third support part 230 further includes a first reinforcing plate 232 arranged at the connection position between the third support plate 231 and the first bending plate 212.

[0081] The first reinforcing plate 232 strengthens the connection strength at the connection position between the third support plate 231 and the first bending plate 212, avoids the disconnection or stress fracture at the connection position, further improves the overall structural stability of the bracket 200, and improves the support stability of the bracket 200 on the upper layer battery cell 410.

[0082] Preferably, the end portion of the first reinforcing plate 232 extends to both sides and is connected to the first bending plate 212 to form a triangular structure of the first reinforcing plate 232, and the first reinforcing plate 232 is fixedly connected to the first bending plate 212.

[0083] The extension of the first reinforcing plate 232 increases its connection area with the first bending plate 212, thereby improving the connection strength and stability. The triangular structure of the first reinforcing plate 232 further increases its structural strength, ensuring the positional accuracy and connection stability of the third support plate 231, which is conducive to further achieving stable and reliable support for the upper battery unit 410.

[0084] In one embodiment, such as Figure 2 , Figure 4 , Figure 12 As shown, a partition beam 300 extending along the length of the battery unit 400 is provided inside the housing frame 100. The partition beam 300 is roll-formed, and a first placement area 140 is formed between adjacent partition beams 300 and between the partition beam 300 and the side wall of the adjacent housing frame 100.

[0085] This solution uses partition beams 300 to divide the interior of the housing frame 100 into multiple first placement areas 140, enabling the orderly placement of the lower battery units 420 and achieving the division and arrangement of the internal space of the housing frame 100. The position of the partition beams 300 provides orientation guidance when placing the lower battery units 420, forming multiple clearly defined lower placement areas within the housing frame 100. This avoids chaotic placement of the lower battery units 420 and ensures the accuracy of the number and placement position of the lower battery units 420 within the housing frame 100.

[0086] Preferably, the bracket 200 is disposed between adjacent partition beams 300 and between the partition beams 300 and the side wall of the adjacent box frame 100, so as to form a plurality of second placement areas 250 in the box that correspond one-to-one with the first placement area 140.

[0087] The installation positions of the brackets 200 are divided and defined by the partition beams 300. Multiple brackets 200 are set up, each supporting a corresponding upper-layer battery unit 410 at a corresponding position. Each bracket 200 is connected to the housing frame 100, which helps to distribute the stress on the multiple upper-layer battery units 410 in the housing. The multiple brackets 200 also facilitate individual installation, and in case of repair or replacement, only the corresponding bracket 200 needs to be addressed. The partition beams 300 and multiple brackets 200 achieve a one-to-one correspondence between the first placement area 140 and the second placement area 250, making the overall layout of the housing more aesthetically pleasing and the zoning more rational.

[0088] Furthermore, such as Figure 5 , Figure 14 As shown, the partition beam 300 is provided with a second step portion 310, the step surface of the second step portion 310 abuts against the bottom surface of the bracket 200 adjacent to it, and the first support portion 210 is fixed to the side wall of the second step portion 310.

[0089] The second step part 310 is arranged on the partition beam 300 to support the cradle 200 adjacent thereto, and the first step part 130 is arranged to limit and support the cradle 200, and the first supporting part 210 is fixed to the side wall of the second step part 310, thereby connecting the cradle 200 and the partition beam 300, improving the limiting stability of the second step part 310 to the cradle 200, and enhancing the supporting strength of the cradle 200 when the cradle 200 is subjected to pressure from the upper battery unit 410.

[0090] Preferably, the first bending plate 212 abuts against the step surface of the second step part 310 adjacent thereto to achieve the limiting support of the partition beam 300 to the cradle 200.

[0091] In a preferred embodiment, as shown in Figure 5 、 Figure 7 、 Figure 10 The first sealing plate 110 and the second sealing plate 120 form two adjacent first step parts 130.

[0092] In another preferred embodiment, as shown in Figure 5 、 Figure 7 、 Figure 10 The second sealing plate 120 and the partition beam 300 form two adjacent first step parts 130 and second step parts 310, and the second reinforcing plate 240 is arranged between the two adjacent first step parts 130 and the second step part 310, and the second reinforcing plate 240 is fixedly connected to the bottom surface of the cradle 200.

[0093] The second reinforcing plate 240 is arranged to connect and fix the corner of the cradle 200, the first sealing plate 110 and the second sealing plate 120, thereby improving the structural strength of the corner, and further connecting and fixing the cradle 200, the first sealing plate 110 and the second sealing plate 120, thereby further improving the overall structural stability.

[0094] Similarly, the second reinforcing plate 240 is arranged to be fixed to the corner formed by the connection between the outer side wall of the partition beam 300 and the second sealing plate 120, thereby improving the connection structural strength of the corner, which is beneficial to improving the connection structural strength of the partition beam 300 and the second sealing plate 120, and improving the connection stability between the cradle 200 and the partition beam 300 and the second sealing plate 120, thereby further improving the overall structural stability.

[0095] The present application does not limit the connection relationship and connection mode of the first supporting part 210, the second supporting part 220, the third supporting part 230, the box frame 100, the upper battery unit 410, the partition beam 300 and the second reinforcing plate 240 and the cradle 200, which can adopt any one or more of the following embodiments:

[0096] Embodiment one: as shown in Figure 2 ,Figure 10 , Figure 11 As shown, the first support part 210 and the second support part 220 are connected to the box frame 100 by the first fastener 510.

[0097] Example 2: Figure 2 , Figure 10 , Figure 11 As shown, the third support 230 is connected to the upper battery unit 410 via a second fastener 520.

[0098] Example 3: Figure 2 , Figure 10 , Figure 11 As shown, the first support 210 is connected to the partition beam 300 by a third fastener 530.

[0099] Example 4: Figure 2 , Figure 10 , Figure 11 As shown, the second reinforcing plate 240 is connected to the bracket 200 by the fourth fastener 540.

[0100] The bracket 200 is stably connected to the housing frame 100 and to the upper battery unit 410 by means of the first fastener 510, the second fastener 520, the third fastener 530, and the fourth fastener 540. It is understood that the first fastener 510, the second fastener 520, the third fastener 530, and the fourth fastener 540 can be common fasteners such as bolts and screws found in the prior art, and mounting holes can be correspondingly provided in the first support portion 210, the second support portion 220, the third support portion 230, the housing frame 100, and the upper battery unit 410.

[0101] In addition, such as Figure 2 , Figure 8 As shown, adjacent brackets 200 can be connected by a third fastener 530, which can further improve the overall structural stability and positional accuracy of the brackets 200. Furthermore, based on the setting of the partition beam 300, this method can connect two adjacent brackets 200 and the partition beam 300 located between the two brackets 200, improving the overall structural compactness and stability of the box, which is conducive to ensuring the accurate positional relationship between the components, and reducing the openings in the partition beam 300, thus achieving a one-time connection between two adjacent brackets 200 and the partition beam 300 between them.

[0102] In addition, combined Figure 4 , Figure 6 as well as Figure 12 and Figure 13It can be seen that the bottom of the box frame 100 is provided with a bottom plate, and the bottom plate is also provided with fasteners to fix the lower battery unit 420 in the first placement area 140 formed in the box frame 100, thereby improving the position stability of the lower battery unit 420 and avoiding collision damage.

[0103] The places not mentioned in the application can be realized by using or referring to the existing technology.

[0104] Each of the embodiments in the specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other. Each embodiment mainly describes the differences from other embodiments.

[0105] The above only describes the embodiments of the application and is not intended to limit the application. Those skilled in the art can make various changes and modifications to the application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the application shall be included in the scope of the claims of the application.

Claims

1. A battery pack case in which battery cells are distributed, characterized by, The battery cell includes upper and lower battery cells arranged vertically, the box includes a box frame provided with a plurality of first placement areas for accommodating the lower battery cells, and the box further includes a bracket provided on the top of the box frame and provided with a second placement area for accommodating the upper battery cell, the box frame is provided with a first step portion, and the bottom surface of the bracket abuts against the step surface of the first step portion so that the bracket is arranged on the box frame.

2. The battery pack enclosure of claim 1, wherein, The box frame includes two opposite first sealing plates arranged along the length direction of the battery cell and two opposite second sealing plates arranged along the width direction of the battery cell, and the first sealing plates and the second sealing plates enclose to form the side walls of the box frame, and the first sealing plates and the second sealing plates have the first step portion extending in the horizontal direction towards one side of the battery cell.

3. The battery pack enclosure of claim 2, wherein, The bracket includes a first support portion and a second support portion connected with the box frame and a third support portion connected with the upper battery cell, the first support portion abuts against the step surface of the first step portion, and the first support portion connects the second support portion and the third support portion.

4. The battery pack enclosure of claim 3, wherein, The first support portion includes two first support plates parallel to the first sealing plates, the second support portion includes two second support plates parallel to the second sealing plates, the first support plates are fixedly connected with the first sealing plates, and the second support plates are fixedly connected with the second sealing plates.

5. The battery pack enclosure of claim 4, wherein, The first support portion further includes a first bending plate arranged along the length direction of the battery cell, the first bending plate abuts against the step surface of the first step portion, and the first bending plate is integrally roll-formed with the first support plates, and the two ends of the second support plates are respectively connected with the first bending plates and the first support plates on the two sides.

6. The battery pack enclosure of claim 5, wherein, The third support portion includes a plurality of third support plates arranged along the width direction of the battery cell, and the two ends of each third support plate are respectively fixed to the first bending plates.

7. The battery pack enclosure of claim 6, wherein, The third support portion further includes a first reinforcing plate arranged at the connection position of the third support plates and the first bending plates.

8. The battery pack enclosure of claim 7, wherein, The end portion of the first reinforcing plate extends to the two sides and is connected with the first bending plates to form the first reinforcing plate in a triangular structure, and the first reinforcing plate is fixedly connected with the first bending plates.

9. The battery pack enclosure of claim 3, wherein, The box frame is provided with a partition beam extending along the length direction of the battery cell, the partition beam is roll-formed, and the first placement areas are formed between adjacent partition beams and between the partition beam and the side walls of the adjacent box frame.

10. The battery pack enclosure of claim 9, wherein, The bracket is arranged between adjacent partition beams and between the partition beam and the side walls of the adjacent box frame to form a plurality of second placement areas corresponding to the first placement areas in the box.

11. The battery pack enclosure of claim 9, wherein, The partition beam is provided with a second step portion, the step surface of the second step portion abuts against the bottom surface of the bracket adjacent thereto, and the first support portion is fixed to the side wall of the second step portion.

12. The battery pack enclosure of claim 11, wherein, The second reinforcing plate is fixedly connected with the bottom surface of the bracket.

13. The battery pack enclosure of claim 12, wherein, The first support part and the second support part are connected with the box frame through first fasteners, and / or the third support part is connected with the upper layer of battery units through second fasteners, and / or the first support part is connected with the partition beam through third fasteners, and / or the second reinforcing plate is connected with the bracket through fourth fasteners.

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