Battery pack assembly and electric device comprising same

Abstract

A battery pack assembly (1) and an electric device comprising same. The battery pack assembly (1) comprises a tray (10), a battery assembly (200), and a power distribution box (30). The power distribution box (30) has a positive input terminal (31) and a negative input terminal (32). The power distribution box (30) is arranged on one side of the battery assembly (200). There is a first line segment (12) between the projections of a total positive terminal (21) and a total negative terminal (22) on a frame (17) in the direction perpendicular to the frame (17). There are a first projection point (13) and a second projection point (14) in respective projections of the positive input terminal (31) and the negative input terminal (32) on the frame (17) in the direction perpendicular to the frame (17). The first projection point (13) and the second projection point (14) are located in the first line segment (12).

Description

Battery pack assembly and electrical equipment having the same

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application No. 2023112464379, filed on September 25, 2023, entitled “Battery Pack Assembly and Electrical Equipment Having the Same,” the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application relates to the field of batteries, and in particular to a battery pack assembly and an electrical device having the same. Background Art

[0004] In related technologies, battery packs have high voltage requirements, so batteries are mostly connected in series to form battery assemblies in the battery pack, which leads to the positions of the total positive terminal and the total negative terminal of the battery assembly being relatively dispersed. The distribution box is generally connected to the total positive terminal and the total negative terminal respectively through a bus, so the length of the bus is long and more fixing parts are required to fix the bus, which makes the assembly of the bus difficult and the cost of the battery pack high.

[0005] Summary of the Invention

[0006] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the present application is to provide a battery pack assembly in which the first projection point and the second projection point of the battery pack assembly are within a first line segment, thereby shortening the path of the busbar connecting the distribution box and the battery assembly and reducing the length of the busbar.

[0007] The present application further proposes an electrical device having the above-mentioned battery pack assembly.

[0008] According to the present application, the battery pack assembly includes: a tray, the tray having a bottom plate and a frame, the frame being arranged on the bottom plate and enclosing together with the bottom plate to form a accommodating cavity; a battery assembly, the battery assembly having a total positive terminal and a total negative terminal; a distribution box, the distribution box having a positive input terminal and a negative input terminal, and the distribution box being arranged on one side of the battery assembly; wherein, the total positive terminal and the total negative terminal have a first line segment between their projections on the frame in a direction perpendicular to the frame, and the projections of the positive input terminal and the negative input terminal on the corresponding frame in a direction perpendicular to the frame have a first projection point and a second projection point, and the first projection point and the second projection point are within the first line segment.

[0009] According to the battery pack assembly of the present application, its first projection point and the second projection point are within the first line segment, so that the path of the bus connecting the distribution box and the battery assembly is shortened, thereby reducing the length of the bus, and further reducing the production cost of the battery pack assembly. At the same time, the number of fixing parts required to fix the bus is reduced, which improves the assembly efficiency of the battery pack assembly and can further reduce the production cost of the battery pack assembly.

[0010] The electric equipment according to the present application includes the battery pack assembly described in any one of the above embodiments. Since the electric equipment according to the present application is provided with the battery pack assembly of the above embodiments, the production efficiency of the electric equipment is high and the production cost is low.

[0011] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] FIG1 is an exploded view of a tray, a battery, and a distribution box according to an embodiment of the present application;

[0013] FIG2 is a schematic structural diagram of a battery pack assembly according to an embodiment of the present application;

[0014] FIG3 is an enlarged view of circle A in FIG2 ;

[0015] FIG4 is an enlarged view of circle B in FIG2 ;

[0016] FIG5 is a top view of a battery pack assembly according to an embodiment of the present application;

[0017] FIG6 is an exploded view of a battery pack assembly according to an embodiment of the present application;

[0018] FIG7 is a schematic diagram of the structure of an electrical device according to an embodiment of the present application.

[0019] Reference numerals:

[0020] 100. Electrical equipment; 1. Battery pack assembly;

[0021] 10. Tray; 11. Crossbeam; 111. Rivet nut; 12. First line segment; 13. First projection point; 14. Second projection point; 15. First point; 16. Second point; 17. Frame; 18. Side beam; 19. Bottom plate; 10a. Accommodation cavity; 10b. First accommodation cavity; 10c. Second accommodation cavity;

[0022] 20. Battery pack; 21. Total positive terminal; 22. Total negative terminal; 200. Battery assembly;

[0023] 30. Distribution box; 31. Positive input terminal; 32. Negative input terminal; 33. Fastener mounting slot; 34. Avoidance hole; 301. Side; 302. Top;

[0024] 41. First terminal; 42. Second terminal; 43. Third terminal; 44. Fourth terminal;

[0025] 51. Connecting bar; 52. Positive bus bar; 53. Negative bus bar; 54. First wiring harness; 55. Second wiring harness;

[0026] 60. Pressure plate; 61. Welding nut; 70. Bolt; 80. Cover plate. DETAILED DESCRIPTION

[0027] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0028] The following describes a battery pack assembly 1 according to an embodiment of the present application with reference to FIG. 1 to FIG. 6 .

[0029] As shown in Figures 1 to 6, the battery pack assembly 1 according to the present application includes: a tray 10, a battery assembly 200 and a distribution box 30, the tray 10 has a bottom plate 19 and a frame 17, the frame 17 is arranged on the bottom plate 19 and together with the bottom plate 19 encloses a accommodating cavity 10a, the battery assembly 200 has a total positive terminal 21 and a total negative terminal 22, the distribution box 30 has a positive input terminal 31 and a negative input terminal 32, and the distribution box 30 is arranged on one side of the battery assembly 200; wherein, the total positive terminal 21 and the total negative terminal 22 have a first line segment 12 between their projections on the frame 17 in the direction perpendicular to the frame 17, the positive input terminal 31 and the negative input terminal 32 have a first projection point 13 and a second projection point 14 on the corresponding frame 17 in the direction perpendicular to the frame 17, and the first projection point 13 and the second projection point 14 are within the first line segment 12.

[0030] The tray 10 includes a bottom plate 19 and a frame 17. The frame 17 is arranged on the periphery of the bottom plate 19 and defines a receiving cavity 10a together with the frame 17. The battery assembly 200 is accommodated in the receiving cavity 10a and has a total positive terminal 21 and a total negative terminal 22. The distribution box 30 is formed with a positive input terminal 31 that cooperates with the total positive terminal 21 and a negative input terminal 32 that cooperates with the total negative terminal 22. It can be understood that in the horizontal direction, the total positive terminal 21 is projected on the frame 17 in the direction perpendicular to the frame 17 as a first Point 15, the projection of the total negative terminal 22 on the frame 17 along the direction perpendicular to the frame 17 is constructed as the second point 16, the line connecting the first point 15 and the second point 16 is constructed as the first line segment 12, the projection of the positive input terminal 31 on the frame 17 along the direction perpendicular to the frame 17 is constructed as the first projection point 13, the projection of the negative input terminal 32 on the frame 17 along the direction perpendicular to the frame 17 is constructed as the second projection point 14, and the first projection point 13 and the second projection point 14 are located within the first limit segment 12. The first projection point 13 and the second projection point 14 within the first line segment 12 include the first projection point 13 and the second projection point 14 inside the first line segment 12, and also include the first projection point 13 and the second projection point 14 at the two end points of the first line segment 12 (i.e., the first point 15 and the second point 16). In some embodiments, the horizontal direction is the length direction or the width direction of the battery pack assembly 1. In the embodiment of the present application, as shown in Figure 5, the horizontal direction selects the length direction of the battery pack assembly 1.

[0031] In addition, it can be understood that the frame 17 of the pallet has multiple side beams 18, and the multiple side beams 18 are connected end to end in sequence to form the frame 17. The total positive terminal 21 and the total negative terminal 22 have a first line segment between their projections on the frame 17 in a direction perpendicular to the frame 17: the total positive terminal 21 and the total negative terminal 22 are respectively projected on each side beam 18 in the frame 17 in a direction perpendicular to the corresponding side beam 18, thereby determining a first line segment 12 on each side beam 18. Then, the projections of the positive input terminal 31 and the negative input terminal 32 on the corresponding frame 17 in a direction perpendicular to the frame 17 have a first projection point 13 and a second projection point 14: the positive input terminal 31 and the negative input terminal 32 are respectively projected on each side beam 18 in the frame 17 in a direction perpendicular to the corresponding side beam 18, thereby determining a first projection point 13 and a second projection point 14. For the first line segment 12, the first projection point 13, and the second projection point 14 on each side beam 18, it is determined whether the first projection point 13 and the second projection point 14 are within the first line segment 12 on the side beam 18. It is sufficient as long as the first projection point 13 and the second projection point 14 are within the first line segment 12 on one of the side beams 18.

[0032] It is understood that, referring to Figures 1 to 6, the total positive terminal 21 and the total negative terminal 22 of the battery assembly 200 are generally the positive or negative poles of the battery. Generally, the total positive terminal 21 and the total negative terminal 22 of the battery assembly 200 are arranged on two opposite sides of the battery assembly 200. The positive input terminal 31 and the negative input terminal 32 of the distribution box 30 are generally electrical connection terminals, and the positions of the terminals can be adjusted according to the specific application. Therefore, in one embodiment, the electrical connection terminal may be a connection bar. Therefore, when the projection of the positive input terminal 31 and the negative input terminal 32 on the corresponding frame 17 along the direction perpendicular to the frame 17 has a first projection point 13 and a second projection point 14, the positive input terminal 31 and the negative input terminal 32 are the connection points where the electrical connection terminals are connected to the bus bar, that is, the positive projection is made on the corresponding frame 17 along the direction perpendicular to the frame 17 at this connection point, thereby forming the first projection point and the second projection point. Alternatively, in one embodiment, in order to facilitate the measurement of the corresponding line segments and projection points, the position where the bus bar first contacts the distribution box 30 can also be used as the total positive terminal 21 or the total negative terminal 22, that is, the position where the bus bar first contacts the distribution box 30 is projected on the corresponding frame 17 in a direction perpendicular to the frame 17, thereby forming a first projection point 13 and a second projection point 14. In the above embodiment, when the bus bar first contacts the distribution box 30 and satisfies the above relationship (that is, the first projection point 13 and the second projection point 14 are within the first line segment 12), the length of the bus bar can be shortened and the number of fixing parts for fixing the bus bar can be reduced, so it can be used as the positive input terminal 31 and the negative input terminal 32 of the distribution box 30.

[0033] It can be understood that the total positive terminal 21 and the positive input terminal 31 are connected through a bus, and the total negative terminal 22 and the negative input terminal 32 are connected through a bus to electrically connect the battery assembly 200 and the distribution box 30. Through the above-mentioned setting, the bus can connect the total positive terminal 21 and the positive input terminal 31 and the total negative terminal 22 and the negative input terminal 32 with the shortest path, so that the bus connects the battery assembly 200 and the distribution box 30 with the shortest length, while reducing the number of fixings required to fix the bus.

[0034] According to the battery pack assembly 1 involved in the present application, its first projection point 13 and the second projection point 14 are within the first line segment 12, so that the path of the bus connecting the distribution box 30 and the battery assembly 200 is shortened, thereby reducing the length of the bus, and further reducing the production cost of the battery pack assembly 1. At the same time, the number of fixing parts required to fix the bus is reduced, which improves the assembly efficiency of the battery pack assembly 1 and can further reduce the production cost of the battery pack assembly 1.

[0035] According to some embodiments of the present application, the accommodating cavity 10a is constructed in multiple configurations, and the battery assembly 200 includes multiple battery packs 20 connected in series and / or in parallel, with one battery pack 20 being accommodated in one accommodating cavity 10a.

[0036] It is understood that the tray 10 has multiple accommodating cavities 10a, each of which accommodates a battery pack 20. The multiple battery packs 20 are connected in series and / or in parallel to form a battery assembly 200. It is worth mentioning that the tray 10 may have a single accommodating space divided into multiple accommodating areas, each of which is configured as the accommodating cavities 10a, and the multiple battery packs 20 are respectively accommodated in the multiple accommodating areas. Alternatively, the tray 10 may be provided with a divider to divide the accommodating space into the multiple accommodating areas, and this is not a limitation herein.

[0037] According to some embodiments of the present application, the multiple accommodating cavities 10a include a first accommodating cavity 10b and a second accommodating cavity 10c, the total positive terminal 21 is located in the first accommodating cavity 10b, and the total negative terminal 22 is located in the second accommodating cavity 10c. In the height direction, the distribution box 30 is arranged above the battery pack 20, and the projection of the positive input terminal 31 on the bottom plate 19 is located in the first accommodating cavity 10b, and the projection of the negative input terminal 32 on the bottom plate 19 is located in the second accommodating cavity 10c.

[0038] In some embodiments, one end of the multiple accommodating cavities 10a in the horizontal direction is configured as a first accommodating cavity 10b, and the other end of the multiple accommodating cavities 10a in the horizontal direction is configured as a second accommodating cavity 10c. The distribution box 30 is arranged above the battery assembly 200, and the projection of the distribution box 30 in the height direction is located in all the accommodating cavities 10a. At this time, the projection of the positive input terminal 31 on the bottom plate 19 is located in the first accommodating cavity 10b, and the projection of the negative input terminal 32 on the bottom plate 19 is located in the second accommodating cavity 10c. When assembling the battery pack assembly 1, the distribution box 30 is arranged above the battery assembly 200. At the same time, the positive input terminal 31 of the distribution box 30 is arranged above the first accommodating cavity 10b, and the negative input terminal 32 of the distribution box 30 is arranged above the second accommodating cavity 10c. Thus, the bus connecting the positive input terminal 31 with the total positive terminal 21 can connect the positive input terminal 31 and the total positive terminal 21 above the first accommodating cavity 10b, and the bus connecting the negative input terminal 32 with the total negative terminal 22 can connect the negative input terminal 32 and the total negative terminal 22 above the second accommodating cavity 10c, so that the bus connects the battery assembly 200 and the distribution box 30 with a shorter length.

[0039] [Corrected according to Rule 91 on October 22, 2024] According to some embodiments of the present application, among the multiple accommodation cavities 10a, there are a first accommodation cavity 10b and a second accommodation cavity 10c. The total positive terminal 21 is located in the first accommodation cavity 10b, and the total negative terminal 22 is located in the second accommodation cavity 10c. Horizontally, the distribution box 30 is arranged on one side of the outer periphery of the battery assembly 200. The projection of the positive input terminal 31 on the frame 17 is located in the first accommodation cavity 10b, and the projection of the negative input terminal 32 on the frame 17 is located in the second accommodation cavity 10c.

[0040] In some embodiments, the distribution box 30 is arranged on one side of the outer periphery of the battery assembly 200, and horizontally, the projection of the distribution box 30 on the frame 17 is located within all the accommodation cavities 10a. The projection of the positive input terminal 31 on the frame 17 is located in the first accommodation cavity 10b, and the projection of the negative input terminal 32 on the frame 17 is located in the second accommodation cavity 10c. When installing the distribution box 30, within the projection range of the first accommodation cavity 10b perpendicular to the frame 17, the busbar connected to the total positive terminal 21 can be directly connected to the positive input terminal 31. Within the projection range of the second accommodation cavity 10c perpendicular to the frame 17, the busbar connected to the total negative terminal 22 can be directly connected to the negative input terminal 32. Thus, after the two busbars connect the positive input terminal 31 and the total positive terminal 21 respectively and the negative input terminal 32 and the total negative terminal 22 respectively, the length dimensions of the two busbars are small, and at the same time, the number of fixing parts for fixing the busbars is reduced.

[0041] According to some embodiments of the present application, the horizontal direction includes the width direction and the length direction. The multiple accommodation cavities 10a are spaced apart in the length direction and / or the width direction, and the distribution box 30 extends along the length direction and / or the width direction.

[0042] In some embodiments, the multiple accommodation cavities 10a can be spaced apart along the length direction of the battery pack assembly 1. At this time, the distribution box 30 extends in the length direction to connect the battery assembly 200 and the distribution box 30 with a busbar of a shorter length dimension; in some other embodiments, the multiple accommodation cavities 10a can be spaced apart along the width direction of the battery pack assembly 1. At this time, the distribution box 30 extends in the width direction; in some other embodiments, the multiple accommodation cavities 10a can be spaced apart along the length direction and the width direction of the battery pack assembly 1. At this time, the multiple accommodation cavities 10a are configured in a "field" shape, and the distribution box 30 extends along the length direction and the width direction, that is, one end of the distribution box 30 faces the total positive terminal 21 and the other end faces the total negative terminal 22.

[0043] Therefore, through the above-mentioned setting, the two ends of the distribution box 30 can be respectively opposite to the total positive terminal 21 and the total negative terminal 22 of the battery assembly 200, so that the bus connects the battery assembly 200 and the distribution box 30 with the shortest length, and the number of fixing parts for fixing the bus can be reduced.

[0044] According to some embodiments of the present application, as shown in Figure 5, in the width direction or the length direction, the distance between one side of the distribution box 30 and the edge of one side of the tray 10 opposite to it is L1, and the distance between the other side of the distribution box 30 and the edge of the other side of the tray 10 opposite to it is L2, and it satisfies: 0.8≤L1 / L2≤1.2.

[0045] In some embodiments, the electrical equipment can be constructed as a vehicle, the battery pack assembly 1 is arranged on the chassis of the vehicle, and a sub-instrument panel is provided between the main driver's seat and the co-driver's seat of the vehicle. The sub-instrument panel is suitable for providing an item placement area for the driver, and to facilitate the driver to store and retrieve items, only the upper half of the sub-instrument panel is provided with storage space, and the lower half of the sub-instrument panel is an unused area. Therefore, the above arrangement can place the distribution box 30 in the unused area of ​​the sub-instrument panel, thereby improving the space utilization of the vehicle. Here, the frame 17 of the tray 10 defines the edge of the tray 10, and in the width direction or the length direction, the distance between one side of the distribution box 30 and the side of the frame 17 opposite to it is L1, and the distance between the other side of the distribution box 30 and the other side of the frame 17 opposite to it is L2.

[0046] It can be understood that in the width direction or length direction, the width dimension of the distribution box 30 is L3, and the width dimension of the tray 10 is L4, satisfying: L1+L2+L3=L4, and 0.8≤L1 / L2≤1.2. Through the above setting, the distribution box 30 can be accommodated in the unused area of ​​the auxiliary instrument panel, thereby improving the space utilization of the vehicle. In some embodiments, L1 / L2=1.

[0047] According to some embodiments of the present application, the battery pack assembly 1 further includes: battery pack output terminals, which are disposed on the tray 10 and are adapted to be connected to the distribution box 30 via the connection bars 51. It is understood that electrical equipment is adapted to be connected to the battery pack output terminals, which are connected to the distribution box 30 via the connection bars 51, and the distribution box 30 is connected to the battery assembly 200 via the busbar. Thus, the electrical equipment is connected to the battery pack output terminals so that the battery assembly 200 supplies power to the electrical equipment, thereby facilitating the connection between the electrical equipment and the battery pack assembly 1 and improving the assembly efficiency of the electrical equipment.

[0048] According to some embodiments of the present application, as shown in Figures 1 to 6, the battery pack output terminal includes a first terminal 41 and a second terminal 42. The first terminal 41 and the second terminal 42 are located at both ends of the tray 10 along the extension direction of the distribution box 30 and are arranged opposite to each other.

[0049] In some embodiments, in the extension direction of the distribution box 30, the first terminal 41 and the second terminal 42 are respectively arranged at the two ends of the tray 10, and the first terminal 41 and the second terminal 42 are respectively arranged opposite to the two ends of the distribution box 30. Thus, after the connecting row 51 is connected to the first terminal 41 or the second terminal 42, the connecting row 51 extends directly toward the distribution box 30 to the end of the distribution box 30 and is connected to the distribution box 30, shortening the length of the connecting row 51, thereby reducing the production cost of the battery pack assembly 1, and at the same time reducing the number of fixing parts required to fix the connecting row 51, thereby improving the assembly efficiency of the battery pack assembly 1.

[0050] In some embodiments, the battery pack output terminal also includes a third terminal 43 and a fourth terminal 44, and the third terminal 43 and the fourth terminal 44 are arranged on one side of the tray 10 in the extension direction of the distribution box 30, or the third terminal 43 and the fourth terminal 44 are respectively arranged on both sides of the tray 10 in the extension direction of the distribution box 30, the first terminal 41 is configured as a fast charging terminal, and the third terminal 43 is configured as a slow charging terminal. The third terminal 43 is connected to the end of the distribution box 30 through the first wiring harness 54, and the fourth terminal 44 is configured as a detection terminal. The operator can connect the detection device to the detection terminal to detect information such as the temperature of the battery pack assembly 1. The fourth terminal 44 is connected to the end of the distribution box 30 through the second wiring harness 55. Therefore, the above-mentioned setting can shorten the length of the first wiring harness 54 and the second wiring harness 55, thereby reducing the production cost of the battery pack assembly 1.

[0051] According to some embodiments of the present application, the battery pack assembly 1 also includes a protective shell, which is connected to the tray 10. The protective shell is suitable for covering the connection between the battery pack output terminal and the connecting row 51, thereby avoiding danger caused by contact between the operator and the connection between the battery pack output terminal and the connecting row 51, thereby improving the safety factor of the battery pack assembly 1.

[0052] In some embodiments, the battery pack output terminal includes a first terminal 41 and a second terminal 42. The first terminal 41 and the connecting bar 51 are electrically connected, and the second terminal 42 and the connecting bar 51 are electrically connected. A protective shell is provided at the connection between the first terminal 41 and the connecting bar 51. The protective shell is suitable for covering the connection between the first terminal 41 and the connecting bar 51 to prevent the operator from contacting the connection between the first terminal 41 and the connecting bar 51, thereby preventing the operator from being electrocuted and causing danger, thereby improving the safety factor of the battery pack assembly 1; in other embodiments, a protective shell is provided at the connection between the second terminal 42 and the connecting bar 51. The protective shell is suitable for covering the connection between the second terminal 42 and the connecting bar 51 to prevent the operator from being electrocuted and causing danger, thereby improving the safety factor of the battery pack assembly 1.

[0053] According to some embodiments of the present application, the battery pack assembly 1 further includes: a positive busbar 52 and a negative busbar 53. The positive busbar is connected to the total positive terminal 21 and the positive input terminal 31, and the negative busbar 53 is connected to the total negative terminal 22 and the negative input terminal 32, so as to connect the battery assembly 200 to the distribution box 30. It is understandable that the positive busbar 52 and the negative busbar 53 are configured as the busbars.

[0054] According to some embodiments of the present application, the positive electrode bus bar 52 is accommodated in the first accommodation cavity 10 b , and / or the negative electrode bus bar 53 is located in the second accommodation cavity 10 c .

[0055] In some embodiments, the positive bus 52 is located in the first accommodating cavity 10b, and the positive bus 52 connects the total positive terminal 21 and the positive input terminal 31, thereby reducing the length of the positive bus 52; in other embodiments, the negative bus 53 is located in the second accommodating cavity 10c, and the negative bus 53 connects the total negative terminal 22 and the negative input terminal 32, thereby reducing the length of the negative bus 53; in other embodiments, the positive bus 52 connects the total positive terminal 21 and the positive input terminal 31 in the first accommodating cavity 10b, and the negative bus 53 connects the total negative terminal 22 and the negative input terminal 32 in the second accommodating cavity 10c, reducing the length of the positive bus 52 and the negative bus 53, thereby reducing the production cost of the battery pack assembly 1.

[0056] [Corrected on 22.10.2024 according to Rule 91] According to some embodiments of the present application, the distribution box 30 has a side 301 along the length direction, and the side of the distribution box 30 away from the tray 10 has a top 302, and the positive input terminal 31 and the negative input terminal 32 are arranged on the side 301 and / or the top 302; the positive bus 52 is arranged on one side of the distribution box 30 and connects the total positive terminal 21 of the battery assembly 200 to the positive input terminal 31; the negative bus 53 is arranged on one side or the other side of the distribution box 30 and connects the total negative terminal 22 of the battery assembly 200 to the negative input terminal 32.

[0057] In some embodiments, the positive input terminal 31 and the negative input terminal 32 are both arranged on the side 301 of the distribution box 30; in other embodiments, one of the positive input terminal 31 and the negative input terminal 32 is arranged on the top 302 of the distribution box 30, and the other of the positive input terminal 31 and the negative input terminal 32 is arranged on the side 301 of the distribution box 30; in other embodiments, the positive input terminal 31 and the negative input terminal 32 are both arranged on the side 301 of the distribution box 30, which is not limited here.

[0058] In some embodiments, the battery packs 20 in multiple accommodating cavities 10a have a total positive terminal 21 and a total negative terminal 22 after being connected. Among the multiple battery packs 20, one electrode of one battery pack 20 is constructed as the total positive terminal 21, and one electrode of another battery pack 20 is constructed as the total negative terminal 22. It can be understood that the total positive terminal 21 and the total negative terminal 22 may be located on the same side of the tray 10 in the width direction, and the total positive terminal 21 and the total negative terminal 22 may also be located on both sides of the tray 10 in the width direction.

[0059] When the total positive terminal 21 and the total negative terminal 22 are located on the same side of the tray 10 in the width direction, one end of the positive bus 52 is connected to the total positive terminal 21, and the other end of the positive bus 52 extends toward the distribution box 30 and is connected to one side of the distribution box 30, one end of the negative bus 53 is connected to the total negative terminal 22, and the other end of the negative bus 53 extends toward the distribution box 30 and is connected to one side of the distribution box 30. At this time, the positive bus 52 and the negative bus 53 are connected on the same side of the distribution box 30; when the total positive terminal 21 and the total negative terminal 22 are respectively located on both sides of the tray 10 in the width direction, the positive bus 52 and the negative bus 53 are respectively connected to both sides of the distribution box 30 in the width direction.

[0060] As a result, the positive bus bar 52 and the negative bus bar 53 can be arranged in the shortest path, shortening the length of the positive bus bar 52 and the negative bus bar 53, reducing the production cost of the battery pack assembly 1, and at the same time reducing the number of fixing parts required for fixing the positive bus bar 52 and the negative bus bar 53, thereby improving the installation efficiency of the positive bus bar 52 and the negative bus bar 53, thereby improving the production efficiency of the battery pack assembly 1.

[0061] According to some embodiments of the present application, at least one of the connection between the positive input terminal 31 and the positive bus 52 and the connection between the negative input terminal 32 and the negative bus 53 is arranged on the top 302 and / or the side 301, and an operating space is provided on the side of the connection facing away from the tray 10. The operating space facilitates the connection between the positive input terminal 31 and the positive bus 52 and the negative input terminal 32 and the negative bus 53, which can improve the connection efficiency between the distribution box 30 and the battery assembly 200.

[0062] In some embodiments, the connection between the positive input terminal 31 and the positive bus 52 is constructed as a first connection point, and the connection between the negative input terminal 32 and the negative bus 53 is constructed as a second connection point, and the first connection point and the second connection point are both arranged at the top 302 of the distribution box 30; in other embodiments, the first connection point and the second connection point are both arranged at the side 301 of the distribution box 30; in other embodiments, one of the first connection point and the second connection point is arranged at the top 302 of the distribution box 30, and the other of the first connection point and the second connection point is arranged at the side 301 of the distribution box 30, which is not limited here.

[0063] According to some embodiments of the present application, as shown in Figures 1 to 6, the battery pack assembly 1 also includes: a crossbeam 11, which is arranged between two adjacent accommodating cavities 10a, and at least a portion of the distribution box 30 is located on the side of the crossbeam 11 away from the bottom plate 19 and is fixed to the crossbeam 11.

[0064] In some embodiments, the crossbeam 11 is constructed as the partition, and the crossbeam 11 is suitable for separating multiple accommodating cavities 10a inside the tray 10. It can be understood that the crossbeam 11 is suitable for providing an installation point for the distribution box 30, so that the distribution box 30 can be stably set above the battery assembly 200, thereby improving the installation stability of the distribution box 30, and the crossbeam 11 is suitable for blocking two adjacent accommodating cavities 10a to prevent multiple accommodating cavities 10a from being connected to each other. In some embodiments, thermal runaway of the battery pack 20 will generate high-temperature gas. Blocking multiple accommodating cavities 10a from each other can prevent high-temperature charged gas from entering the accommodating cavity 10a where thermal runaway has not occurred, thereby preventing high-temperature gas from contacting the battery pack 20 where thermal runaway has not occurred, thereby preventing thermal runaway of the entire battery pack assembly 1 and improving the safety factor of the battery pack assembly 1.

[0065] According to some embodiments of the present application, as shown in Figures 1-6, the battery pack assembly 1 further includes a pressure plate 60, which is disposed on top of the battery assembly 200. At least a portion of the distribution box 30 is disposed on a side of the pressure plate 60 facing away from the tray 10 and is fixedly connected to the pressure plate 60. In some embodiments, the battery pack 20 is constructed from a plurality of batteries, which are connected in series and / or in parallel to form the battery pack 20. The plurality of battery packs 20 are respectively housed in corresponding accommodating cavities 10a. The plurality of battery packs 20 are connected in series and / or in parallel to form the battery assembly 200. The pressure plate 60 is disposed on top of the plurality of batteries to limit the plurality of batteries so that the plurality of batteries can be stably housed in their respective accommodating cavities 10a. The distribution box 30 is disposed on a side of the pressure plate 60 facing away from the tray 10. The pressure plate 60 is adapted to provide a mounting point for the distribution box 30, so that the distribution box 30 can be stably disposed above the plurality of batteries. The pressure plate 60 can also prevent the distribution box 30 from contacting the batteries, thereby improving the safety factor of the battery pack assembly 1.

[0066] According to some embodiments of the present application, as shown in FIG6 , the battery pack assembly 1 further includes a cover plate 80. The cover plate 80 cooperates with the tray 10. At least a portion of the cover plate 80 is formed with a recess in the height direction that is away from the tray 10. The recess is suitable for accommodating the distribution box 30. The cover plate 80 is connected to the tray 10 to seal the recess and the multiple accommodating cavities 10a. It is understood that the cover plate 80 sealing the distribution cavity and the multiple accommodating cavities 10a can prevent the batteries and the distribution box 30 from being separated from the accommodating cavities 10a and the distribution cavity, thereby improving the installation stability of the batteries and the distribution box 30, and preventing rainwater and the like from contacting the batteries and the distribution box 30 and affecting the normal operation of the battery pack assembly 1. At the same time, it can prevent the batteries and the distribution box 30 from being exposed to the external environment, which may accelerate the aging of the batteries and the distribution box 30, thereby extending the service life of the batteries and the distribution box 30, thereby extending the service life of the battery pack assembly 1.

[0067] According to some embodiments of the present application, the distribution box 30 includes a base and a distribution box shell. A charging port and a discharging port are formed at each end of the base, respectively, and are connected to the first terminal 41 and the second terminal 42, respectively. A positive input terminal 31 and a negative input terminal 32 are provided on the same side of the base. The base is adapted to be fixedly connected to the pressure plate 60 and the crossbeam 11. The distribution box shell covers the upper surface of the base and engages with the base. Thus, the base is fixed to the pressure plate 60 and the crossbeam 11, respectively, improving the installation stability of the base, thereby improving the installation stability of the distribution box 30.

[0068] In some embodiments, the periphery of the base is provided with a snap-in block extending away from the base in the length direction or the width direction, and the periphery of the distribution box shell is provided with snap-in legs corresponding to the snap-in blocks one by one, the free ends of the snap-in legs extend toward the base and are formed with snap-in holes, and the snap-in blocks are accommodated in the snap-in holes to quickly connect the distribution box shell with the base, thereby improving the assembly efficiency of the distribution box 30; in other embodiments, the periphery of the base is provided with multiple snap-in legs, the free ends of the multiple snap-in legs extend toward the distribution box shell and are formed with snap-in holes, and the periphery of the distribution box shell is formed with snap-in blocks corresponding to the snap-in legs one by one, and the snap-in blocks are accommodated in the snap-in holes to quickly connect the distribution box shell with the base, thereby improving the assembly efficiency of the distribution box 30.

[0069] According to some embodiments of the present application, as shown in Figures 1 to 6, a fastener mounting groove 33 is formed on the lower surface of the base, and a nut is formed on the pressure plate 60 and / or the crossbeam 11, and the nut is accommodated in the fastener mounting groove 33; the battery pack assembly 1 also includes: a bolt 70, the bolt 70 passes through the bottom wall of the fastener mounting groove 33 and is fixed to the nut.

[0070] In some embodiments, a fastener mounting groove 33 is formed on the lower surface of the base, and the fastener mounting groove 33 extends in the height direction. A nut is formed on the pressure plate 60, and the nut is opposite to the fastener mounting groove 33. After the distribution box 30 is set in the preset installation position, the nut is accommodated in the fastener mounting groove 33. Thus, the nut can cooperate with the fastener mounting groove 33 to limit the distribution box 30, thereby preventing the position of the distribution box 30 from being offset when the bolt 70 passes through the bottom wall of the fastener mounting groove 33 and is fixed with the nut, thereby improving the installation efficiency of the distribution box 30. Here, the nut can be a welded nut 61 or the nut and the pressure plate 60 are integrally constructed, and there is no limitation here; in other embodiments, a nut is formed on the beam 11, and the nut is opposite to the fastener mounting groove 33 in the height direction. The bolt 70 passes through the bottom wall of the fastener mounting groove 33 and cooperates with the nut to fix the base to the beam 11, thereby improving the installation stability of the distribution box 30. Here, the nut can be a welded nut 61 or a rivet nut 111, and there is no limitation here.

[0071] In some other embodiments, nuts are provided on the pressure plate 60 and the crossbeam 11, and the base is respectively provided with fastener mounting grooves 33 corresponding to the nuts one by one. The fastener mounting grooves 33 extend in the height direction, and the bolts 70 pass through the bottom wall of the fastener mounting grooves 33 and cooperate with the nuts to fix the base, thereby improving the installation stability of the distribution box 30 and the installation convenience of the bolts 70, thereby improving the assembly efficiency of the distribution box 30.

[0072] Thus, the operator can match the bolt 70 with the nut in the height direction, which improves the connection convenience of the bolt 70 and the nut, thereby improving the assembly efficiency of the distribution box 30. At the same time, the fastener mounting groove 33 is suitable for accommodating the nut and the bolt 70, preventing the bolt 70 and the nut from being exposed in the distribution box 30, thereby improving the aesthetics of the battery pack assembly 1.

[0073] According to some embodiments of the present application, as shown in Figures 2-4, a clearance hole 34 is formed on the distribution box housing, which is directly opposite to the fastener installation slot 33. It is understood that the clearance hole 34 is suitable for avoiding the bolt 70 when installing the bolt 70, preventing the distribution box housing from affecting the installation of the bolt 70, improving the installation efficiency of the bolt 70, and thus improving the assembly efficiency of the distribution box 30.

[0074] According to some embodiments of the present application, as shown in Figures 3 and 4, a through-hole is formed in the bottom wall of the fastener installation slot 33, and a support sleeve is disposed in the through-hole. The support sleeve is sleeved around the outer periphery of the bolt 70 and supported between the nut and the head of the bolt 70. It is understood that the support sleeve is inserted into the through-hole, and the bolt 70 is inserted into the support sleeve. The support sleeve can improve the structural strength of the through-hole and prevent the bottom wall of the fastener installation slot 33 from being damaged due to excessive mating force between the bolt 70 and the nut.

[0075] According to some embodiments of the present application, the explosion-proof valve of the battery is provided on the peripheral wall and / or bottom wall of the battery.

[0076] In some embodiments, an explosion-proof valve is provided on the outer wall of the battery, whereby the high-temperature gas generated during thermal runaway of the battery is discharged in the length direction or width direction, so that the distribution box 30 and the explosion-proof valve are isolated from each other, avoiding the high-temperature gas from contacting the distribution box 30 and affecting the operation of the distribution box 30, thereby improving the safety factor of the battery pack assembly 1; in other embodiments, an explosion-proof valve is provided on the bottom wall of the battery, and the high-temperature gas generated during thermal runaway of the battery is discharged from the bottom wall of the battery, avoiding the high-temperature gas from contacting the distribution box 30, thereby improving the safety factor of the battery pack assembly 1; in other embodiments, both the outer wall and the bottom wall of the battery are provided with explosion-proof valves, and the high-temperature gas generated during thermal runaway of the battery can be discharged from the side away from the distribution box 30 in the length direction, width direction or height direction, thereby avoiding the high-temperature gas from contacting the distribution box 30, thereby improving the safety factor of the battery pack assembly 1.

[0077] The following briefly describes the electric device 100 according to the present application.

[0078] As shown in Figure 7, the electric device 100 according to the present application is provided with the battery pack assembly 1 of the above embodiment. Since the electric device 100 according to the present application is provided with the battery pack assembly 1 described in any one of the above embodiments, the production efficiency of the electric device 100 is high and the production cost is low.

[0079] Here, the electric device 100 may be an energy storage system or a vehicle.

[0080] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0081] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and intent of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A battery pack assembly (1), characterized in that: include: A tray (10), the tray (10) comprising a bottom plate (19) and a frame (17), the frame (17) being arranged on the bottom plate (19) and enclosing together with the bottom plate (19) to form a receiving cavity (10a); A battery assembly (200), wherein the battery assembly (200) has a total positive terminal (21) and a total negative terminal (22); A distribution box (30), the distribution box (30) having a positive input terminal (31) and a negative input terminal (32), the distribution box (30) being arranged on one side of the battery assembly (200); There is a first line segment (12) between the projections of the total positive terminal (21) and the total negative terminal (22) on the frame (17) in a direction perpendicular to the frame (17); the projections of the positive input terminal (31) and the negative input terminal (32) on the corresponding frame (17) in a direction perpendicular to the frame (17) have a first projection point (13) and a second projection point (14); the first projection point (13) and the second projection point (14) are within the first line segment (12).

2. The battery pack assembly (1) according to claim 1, characterized in that: The accommodating chamber (10a) is structured in multiples, and the battery assembly (200) comprises multiple battery packs (20) connected in series or in parallel with each other, and one of the battery packs (20) is accommodated in one of the accommodating chambers (10a).

3. The battery pack assembly (1) according to claim 2, characterized in that: The plurality of accommodating cavities (10a) include a first accommodating cavity (10b) and a second accommodating cavity (10c); the total positive terminal (21) is located in the first accommodating cavity (10b), and the total negative terminal (22) is located in the second accommodating cavity (10c); in the height direction, the distribution box (30) is arranged above the battery pack (20); the projection of the positive input terminal (31) on the bottom plate (19) is located in the first accommodating cavity (10b), and the projection of the negative input terminal (32) on the bottom plate (19) is located in the second accommodating cavity (10c).

4. The battery pack assembly (1) according to claim 2 or 3, characterized in that: The plurality of accommodating cavities (10a) include a first accommodating cavity (10b) and a second accommodating cavity (10c); the total positive terminal (21) is located in the first accommodating cavity (10b), and the total negative terminal (22) is located in the second accommodating cavity (10c); in the horizontal direction, the distribution box (30) is arranged on one side of the periphery of the battery assembly (200); the projection of the positive input terminal (31) on the frame (17) is located in the first accommodating cavity (10b), and the projection of the negative input terminal (32) on the frame (17) is located in the second accommodating cavity (10c).

5. The battery pack assembly (1) according to any one of claims 2 to 4, characterized in that: The horizontal direction includes a width direction and a length direction, a plurality of the accommodating cavities (10a) are distributed at intervals in the length direction or the width direction, and the distribution box (30) extends along the length direction or the width direction.

6. The battery pack assembly (1) according to claim 5, characterized in that: In the width direction or the length direction, the distance between one side of the distribution box (30) and the edge of one side of the tray (10) opposite thereto is L1, and the distance between the other side of the distribution box (30) and the edge of the other side of the tray (10) opposite thereto is L2, and the following conditions are satisfied: 0.8≤L1 / L2≤1.

2.

7. The battery pack assembly (1) according to claim 5 or 6, characterized in that: Also includes: A battery pack output terminal, the battery pack output terminal is arranged on the tray (10), and the battery pack output terminal is suitable for being connected to the distribution box (30) via a connection row (51).

8. The battery pack assembly (1) according to claim 7, characterized in that: The battery pack output terminal comprises a first terminal (41) and a second terminal (42); the first terminal (41) and the second terminal (42) are located at two ends of the tray (10) along the extension direction of the distribution box (30) and are arranged opposite to each other.

9. The battery pack assembly (1) according to claim 7 or 8, characterized in that: Also includes: A protective shell, the protective shell is connected to the tray (10), and the protective shell is suitable for covering the connection between the battery pack output terminal and the connection row (51).

10. The battery pack assembly (1) according to claim 3, characterized in that: Also includes: A positive busbar (52) and a negative busbar (53), wherein the positive busbar (52) is connected to the total positive terminal (21) and the positive input terminal (31), and the negative busbar (53) is connected to the total negative terminal (22) and the negative input terminal (32), so that the battery assembly (200) is connected to the distribution box (30).

11. The battery pack assembly (1) according to claim 10, characterized in that: The positive busbar (52) is accommodated in the first accommodating chamber (10b), and the negative busbar (53) is located in the second accommodating chamber (10c).

12. The battery pack assembly (1) according to claim 10 or 11, characterized in that: The distribution box (30) has a side portion (301) along the length direction, and the distribution box (30) has a top portion (302) on a side away from the tray, and the positive input terminal (31) and the negative input terminal (32) are arranged on the side portion (301) or the top portion (302); The positive electrode busbar (52) is arranged on one side of the distribution box (30) and connects the total positive terminal (21) of the battery assembly (200) to the positive electrode input terminal (31); The negative electrode busbar (53) is arranged on one side or the other side of the distribution box (30) and connects the total negative electrode terminal (22) of the battery assembly (200) to the negative electrode input terminal (32).

13. The battery pack assembly (1) according to claim 12, characterized in that: At least one of the connection between the positive input terminal (31) and the positive busbar (52) and the connection between the negative input terminal (32) and the negative busbar (53) is arranged on the top (302) or the side (301), and an operating space is provided on the side of the connection facing away from the tray (10).

14. The battery pack assembly (1) according to any one of claims 2 to 13, characterized in that: It also includes: a crossbeam (11), the crossbeam (11) being arranged between two adjacent accommodating chambers (10a), and at least a portion of the distribution box (30) being located on a side of the crossbeam (11) away from the bottom plate (19) and being fixed to the crossbeam (11).

15. The battery pack assembly (1) according to any one of claims 2 to 14, characterized in that: Also includes: A pressure plate (60) is arranged on the top of the battery pack (20), and at least a portion of the distribution box (30) is arranged on a side of the pressure plate (60) away from the tray (10) and is fixedly connected to the pressure plate (60).

16. The battery pack assembly (1) according to any one of claims 1 to 15, characterized in that: Also includes: A cover plate (80), the cover plate (80) cooperates with the tray (10), at least a portion of the cover plate (80) is formed with a recess away from the tray (10) in the height direction, the recess is suitable for accommodating the distribution box (30), and the cover plate (80) is connected to the tray (10) to close the recess and the plurality of accommodating cavities (10a).

17. An electrical equipment, characterized in that: A battery pack assembly (1) comprising any one of claims 1 to 16.

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