Battery pack shell and battery pack

Abstract

The utility model discloses a battery pack shell. The battery pack shell comprises an upper shell and a lower shell, the upper shell is provided with an upper mounting space, the lower shell is provided with a lower mounting space, the upper shell and the lower shell are oppositely buckled, and the upper mounting space and the lower mounting space are enclosed to form a closed space; the depth of the upper mounting space and the depth of the lower mounting space are both smaller than the height of the battery module placed in the closed space, in addition, the upper shell is divided into a first upper shell and a second upper shell, and the lower shell is divided into a first lower shell and a second lower shell. The utility model also comprises a battery pack which comprises a battery module and the battery pack shell, the battery module is arranged in the battery pack shell; the problems that a battery module is inconvenient to mount, low in mounting precision, inconvenient to overhaul, maintain, store and carry and the like are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a battery field especially relates to a battery package shell and battery package. BACKGROUND

[0002] Battery package as the electric energy storage carrier, it is widely used in multiple industries, battery package shell as the important part of battery package, its main role is used as placing and protecting battery module, the existing battery package shell usually includes lower shell and top cover, the lower shell body is provided with the installation space for placing battery module, the depth of installation space is at least greater than or equal to the height of battery module, during installation, battery module is first installed to the installation space of lower shell body and then is closed through top cover.

[0003] Therefore, the installation space for containing battery module is all arranged in the lower shell body, when battery module is placed in the installation space, the side wall of lower shell body will exist the blocking interference to the placing of battery module. SUMMARY

[0004] In order to overcome at least one of the defects of the prior art described above, the utility model provides a battery package shell and battery package to solve the problems of inconvenient installation of battery module, low installation precision, maintenance and maintenance and inconvenient storage and carrying.

[0005] The utility model discloses a battery package shell and battery package that overcome at least one of the defects of the prior art described above.

[0006] A battery package shell, comprising an upper shell and a lower shell.

[0007] The upper shell is provided with an upper installation space, and the lower shell is provided with a lower installation space.

[0008] The depth of the upper installation space and the lower installation space is less than the height of the battery module placed in the closed space.

[0009] Further, the upper shell comprises a first upper shell and a second upper shell.

[0010] The first upper shell comprises a first upper space, and the second upper shell comprises a second upper space.

[0011] And / or, the lower shell comprises a first lower shell and a second lower shell.

[0012] The first lower shell comprises a first lower space, the second lower shell comprises a second lower space, the first lower shell and the second lower shell are buckled oppositely, and the first lower space and the second lower space are combined to form the lower mounting space.

[0013] Further, the first upper shell and the second upper shell are symmetrically arranged about the middle line of the length direction of the upper shell based on the middle line of the length direction of the upper shell;

[0014] And / or, the first lower shell and the second lower shell are symmetrically arranged about the middle line of the length direction of the lower shell based on the middle line of the length direction of the lower shell.

[0015] Further, the first upper shell is provided with a first upper flange at the edge for buckling with the second upper shell, and the second upper shell is provided with a second upper flange at the edge for buckling with the first upper shell;

[0016] A plurality of first upper fixing holes are arranged along the length direction of the first upper flange, a plurality of second upper fixing holes are arranged along the length direction of the second upper flange, the plurality of first upper fixing holes and the plurality of second upper fixing holes correspond one-to-one to form a first fixing channel, and an upper fixing member is arranged in the first fixing channel to lockingly connect the first upper flange and the second upper flange;

[0017] And / or, the first lower shell is provided with a first lower flange at the edge for buckling with the second lower shell, and the second lower shell is provided with a second lower flange at the edge for buckling with the first lower shell;

[0018] A plurality of first lower fixing holes are arranged along the length direction of the first lower flange, a plurality of second lower fixing holes are arranged along the length direction of the second lower flange, the plurality of first lower fixing holes and the plurality of second lower fixing holes correspond one-to-one to form a second fixing channel, and a lower fixing member is arranged in the second fixing channel to lockingly connect the first lower flange and the second lower flange.

[0019] Further, the upper shell comprises a quadrilateral upper top plate, two upper side plates and two upper end plates,

[0020] The two upper side plates are arranged one-to-one on two opposite sides of the quadrilateral upper top plate, and the two upper end plates are arranged one-to-one on the other two opposite sides of the quadrilateral upper top plate;

[0021] The lower shell comprises a quadrilateral lower bottom plate, two lower side plates and two lower end plates,

[0022] Two of the lower side plates are arranged on two opposite sides of the quadrilateral lower base plate, and two of the lower end plates are arranged on the other two opposite sides of the quadrilateral lower base plate.

[0023] Further, the four outer corners of the quadrilateral upper top plate are provided with upper fixing columns, and the upper fixing columns are provided with upper locking holes.

[0024] When the upper shell and the lower shell are buckled relative to each other, the four upper locking holes and the four lower locking holes are aligned to form a locking channel, and a locking member is arranged in the locking channel to lock and close the upper shell and the lower shell.

[0025] Further, the upper side plates and the lower side plates that are buckled relative to each other are integrally formed to form side plates, and the upper end plates and the lower end plates that are buckled relative to each other are integrally formed to form end plates.

[0026] The upper fixing columns and the lower fixing columns that are buckled relative to each other are a group of connecting columns, and the connecting columns form four accommodation spaces, and the two side plates and the two end plates are arranged in the four accommodation spaces.

[0027] Further, the side plates are provided with heat dissipation holes.

[0028] Among them,

[0029] The heat dissipation holes are small-diameter holes, and the number of the small-diameter holes is multiple, and the multiple small-diameter holes are arranged in sequence.

[0030] Or, the heat dissipation holes are large-diameter holes, and multiple blocking strips are arranged in the large-diameter holes.

[0031] Further, the quadrilateral upper top plate is provided with upper reinforcing ribs, and the multiple upper reinforcing ribs are arranged in sequence or cross each other.

[0032] And / or, the quadrilateral lower base plate is provided with multiple lower reinforcing ribs, and the multiple lower reinforcing ribs are arranged in sequence or cross each other.

[0033] Further, in the height direction of the battery pack shell, a plane perpendicular to the height direction of the battery pack shell and passing through the midpoint of the height direction of the battery pack shell is taken as a reference plane, and the upper shell and the lower shell are symmetrically arranged.

[0034] A battery pack includes a battery module and a battery pack shell as described above.

[0035] The battery module is arranged in the battery pack shell.

[0036] In summary, the battery pack shell and the battery pack have the following technical effects:

[0037] The depth of the upper mounting space and the lower mounting space corresponding to the upper shell and the lower shell is less than the height of the electric module, in the normal installation step, the battery module will be installed downward into the lower mounting space, at this time, the side wall of the lower shell will not block the upper part of the side surface of the battery module, thereby the installation adjustment of the battery module can be carried out by grabbing the upper part of the side surface of the battery module, and the convenience of the battery module installation is improved.

[0038] In addition, the upper shell is split into a first upper shell and a second upper shell, and the lower shell is split into a first lower shell and a second lower shell, which has the beneficial effect that when the battery module in the battery pack shell needs to be detected and maintained, the corresponding shell can be opened according to the area to be maintained, and the maintenance efficiency is improved. Furthermore, the upper shell and the lower shell are split, and the volume of each split part is smaller, which is more convenient for transportation and storage. The volume of each split part is smaller, so the split part has shorter molding time when being pressure-cast or injection-molded, the internal heat dissipation is more uniform during molding, and the probability of occurrence of adverse conditions such as shrinkage is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 FIG. 1 is a structural schematic view of a battery pack shell according to an embodiment of the present application;

[0040] Figure 2 FIG. 2 is a first exploded schematic view of the battery pack shell of FIG. 1; Figure 1

[0041] Figure 3 FIG. 3 is a second exploded schematic view of the battery pack shell of FIG. 1; Figure 1

[0042] Figure 4 FIG. 4 is a third exploded schematic view of the battery pack shell of FIG. 1; Figure 1

[0043] Figure 5 FIG. 5 is a structural schematic view of a battery pack according to an embodiment of the present application.

[0044] In the drawings, the following signs are used:

[0045] ​​​10, upper shell; 1011, quadrilateral upper top plate; 10111, upper reinforcing rib; 11, first upper shell; 12, second upper shell; 101, upper mounting space; 110, first upper space; 111, first upper flange; 112, second upper flange; 120, second upper space; 13, upper fixing member; 14, upper fixing column; 141, upper locking hole; 20, lower shell; 2011, quadrilateral lower bottom plate; 20111, lower reinforcing rib; 21, first lower shell; 22, second lower shell; 201, lower mounting space; 210, first lower space; 211, first lower flange; 212, second lower flange; 23, lower fixing member; 24, lower fixing column; 241, lower locking hole; 220, second lower space; 40, end plate; 50, side plate; 51, heat dissipation hole; 60, battery module; 70, annular step; 80, heat dissipation fan; 90, external terminal; 91, positive pole; 92, negative pole. DETAILED DESCRIPTION

[0046] In order to better understand and implement, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application.

[0047] In the description of the present application, it should be noted that the directions or position relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the directions or position relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as limiting the present application in that the indicated devices or elements must have a specific direction, be constructed and operated in a specific direction.

[0048] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terminology used in the description of the present application herein only for the purpose of describing specific embodiments of the present application, and is not intended to limit the present application.

[0049] Referring to Figure 1 , Figure 2 and Figure 3 , the present application discloses a battery pack shell, comprising an upper shell 10 and a lower shell 20; the upper shell 10 is provided with an upper mounting space 101, and the lower shell 20 is provided with a lower mounting space 201; the upper shell 10 and the lower shell 20 are relatively buckled, and the upper mounting space 101 and the lower mounting space 201 form a closed space; the depth of the upper mounting space 101 and the lower mounting space 201 is less than the height of the battery module 60 placed in the mounting space.

[0050] Wherein, with the vertical direction as the reference, the upper shell 10 and the lower shell 20 are respectively provided with a U-shaped groove, and the two grooves correspond to the aforementioned upper mounting space 101 and lower mounting space 201. The upper shell 10 is buckled on the lower shell 20, and the upper mounting space 101 and the lower mounting space 201 form a closed space.

[0051] It can be known that the closed space is used for placing the battery module 60. The focus of the embodiment is that the depth of the upper mounting space 101 and the lower mounting space 201 is less than the height of the battery module 60 placed in the mounting space. When the battery module 60 is installed, the upper part of the side of the battery module 60 is usually grabbed to install the battery module 60 into the lower shell 20. The height of the battery module 60 is higher than the depth of the lower shell 20, and the upper part of the battery module 60 protrudes out of the lower shell 20. Therefore, the side wall of the lower shell 20 does not affect the grabbing of the battery module 60, which facilitates the installation and adjustment of the battery module 60 in the lower shell 20, improves the installation efficiency and the accuracy of the installation position.

[0052] In addition, the fixing between the upper shell 10 and the lower shell 20 of the embodiment can be achieved by punching and connecting with bolts, or by fixing with a binding belt or a clamping plate, or by other fixing modes such as a bracket, which will not be listed one by one here.

[0053] Optionally, the specific structure of the upper shell 10 and the lower shell 20 provided with the grooves can refer to the following. The upper shell 10 includes a quadrilateral upper top plate 1011, two upper side plates and two upper end plates. The two upper side plates are respectively arranged on two opposite sides of the quadrilateral upper top plate 1011, and the two upper end plates are respectively arranged on the other two opposite sides of the quadrilateral upper top plate 1011. The lower shell 20 includes a quadrilateral lower bottom plate 2011, two lower side plates and two lower end plates. The two lower side plates are respectively arranged on two opposite sides of the quadrilateral lower bottom plate 2011, and the two lower end plates are respectively arranged on the other two opposite sides of the quadrilateral lower bottom plate 2011.

[0054] Wherein, after the buckling of the upper shell 10 and the lower shell 20, a multi-faceted cube is formed, and the battery pack shell of the embodiment is selected as a cuboid structure. It should be noted that when the upper shell 10 and the lower shell 20 are buckled, one upper end plate and one lower end plate are buckled in a group, and one upper side plate and one lower side plate are buckled in a group, thereby enclosing the circumferential side of the entire battery pack shell.

[0055] Optionally, the four outer corners of the quadrilateral upper top plate 1011 are each provided with an upper fixing column 14, and the upper fixing column 14 is provided with an upper locking hole 141. The four outer corners of the quadrilateral lower bottom plate 2011 are each provided with a lower fixing column 24, and the lower fixing column 24 is provided with a lower locking hole 241. When the upper shell 10 and the lower shell 20 are relatively buckled, the four upper locking holes 141 and the four lower locking holes 241 are aligned to form a locking channel, and a locking piece (not shown in the figure) is arranged in the locking channel to lock and close the upper shell 10 and the lower shell 20.

[0056] In the foregoing upper shell 10 and lower shell 20, the upper mounting space 101 is formed by sequentially connecting and surrounding two upper side plates and two upper end plates on the periphery of the quadrilateral upper top plate 1011. Similarly, the lower mounting space 201 is formed by sequentially connecting and surrounding two lower end plates and two lower side plates on the periphery of the quadrilateral lower bottom plate 2011. In this embodiment, a locking mode of the upper shell 10 and the lower shell 20 is provided, and the foregoing four outer corners of the quadrilateral upper top plate 1011 are each provided with an upper fixing column 14, and the four outer corners of the quadrilateral lower bottom plate 2011 are each provided with a lower fixing column 24. The two ends of the upper end plate and the upper side plate are connected to the side walls of the corresponding adjacent two upper fixing columns 14, and the two ends of the lower end plate and the lower side plate are connected to the side walls of the corresponding adjacent two lower fixing columns 24.

[0057] For example, the upper fixing column 14 and the lower fixing column 24 of this embodiment are both selected as quadrilateral columns, which are more easily aligned with the edges of the upper shell 10 and the lower shell 20, thereby improving the overall aesthetics of the battery pack shell. More importantly, the quadrilateral end face of the quadrilateral column has a larger area, which is beneficial to the opening of the upper locking hole 141 and the lower locking hole 241 as described above, and the locking piece can be selected as a bolt or a lock, etc. In addition, to avoid the locking piece protruding from the top or bottom of the battery pack shell in the vertical direction (i.e. the height direction of the battery pack shell) after completing the locking, the end face of the upper fixing column 14 and the lower fixing column 24 away from each other is provided with a hidden groove, which has a hidden end of the locking piece.

[0058] Notably, the upper fixing column 14 and the lower fixing column 24 described above can be used as support columns, which respectively enhance the support strength of the upper shell 10 and the lower shell 20, and improve the overall structural strength of the battery pack shell.

[0059] In addition, the end face and the side face of the upper fixing column 14 and the lower fixing column 24 described above do not protrude from the bottom face to the side face of the upper shell 10 and the lower shell 20, thereby avoiding the upper fixing column 14 and the lower fixing column 24 from being knocked from the outside, and also ensuring the flatness of the outer vertical face of the upper shell 10 and the lower shell 20.

[0060] Optionally, the mutually buckled upper side plate and lower side plate are integrally formed to form the side plate 50, and the mutually buckled upper end plate and lower end plate are integrally formed to form the end plate 40; the mutually buckled upper fixed column 14 and lower fixed column 24 are a group of connecting columns, and the two groups of adjacent connecting columns form a containing space, and the four connecting columns form four containing spaces, and the two side plates 50 and the two end plates 40 are one-to-one correspondingly arranged in the four containing spaces.

[0061] Wherein, as known from the foregoing, in the vertical direction, one upper end plate and one lower end plate correspondingly buckle a group, and one upper side plate and one lower side plate correspondingly buckle a group, and now the upper end plate and the lower end plate of a group are synthesized into an end plate 40, and the upper side plate and the lower side plate of a group are synthesized into a side plate 50, and the four foregoing containing spaces can communicate the inside and outside of the battery pack shell. In the embodiment, by disassembling the end plate 40 and the side plate 50, the components inside the battery pack shell can be checked or repaired, so that the upper shell 10 and the lower shell 20 do not need to be disassembled as a whole, and the efficiency of checking or repairing is improved.

[0062] In addition, the circumferential edge of the containing space is provided with an inwardly recessed annular step, and the end plate 40 or the side plate 50 is embedded in the annular step 70, so that the end plate or the side plate 50 does not protrude from the side surface of the battery pack shell, thereby achieving hiding, preventing bumping, and improving the overall appearance of the battery pack shell. It should be noted that the annular step is provided with one half on the upper shell 10 and the lower shell 20, and the two are buckled to form a complete closed loop.

[0063] In addition, the circumferential edge of the containing space is provided with an inwardly recessed annular step, and the end plate 40 or the side plate 50 is embedded in the annular step 70, so that the end plate or the side plate 50 does not protrude from the side surface of the battery pack shell, thereby achieving hiding, preventing bumping, and improving the overall appearance of the battery pack shell. It should be noted that the annular step is provided with one half on the upper shell 10 and the lower shell 20, and the two are buckled to form a complete closed loop.

[0064] Optionally, the side plate 50 is provided with a heat dissipation hole 51.

[0065] Optionally, at least one side plate 50 is provided with a heat dissipation hole 51, which includes but is not limited to a round hole or a square hole. In the embodiment, the heat dissipation hole 51 is provided on both side plates, and the heat dissipation holes 51 on the two side plates can better form convection and improve the heat dissipation efficiency. The shape and number of the heat dissipation hole 51 are not limited here and can be set according to actual design needs.

[0066] An optional scheme of the heat dissipation hole 51 structure is as follows: the heat dissipation hole 51 can be a small-diameter hole, and the diameter of the small-diameter hole ranges from 2 mm to 5 mm. In the embodiment, a plurality of small-diameter holes are arranged in sequence on the side plate of the battery pack shell. Alternatively, the heat dissipation hole 51 can be a large-diameter hole, and the diameter of the large-diameter hole ranges from 10 mm to 15 mm. Similarly, a plurality of large-diameter holes are arranged in sequence on the side plate of the battery pack shell. Different from the small-diameter hole, a baffle strip is arranged in the large-diameter hole. The baffle strip can be a straight strip, which is arranged in the heat dissipation hole. The arrangement angle of the straight strip and the interval between two adjacent straight strips can be set as required, which will not be described here. Alternatively, when the heat dissipation hole is a circular hole, a plurality of baffle strips can be a plurality of circular rings with different diameters. The circular rings are concentrically arranged in sequence from small to large in diameter. The circular rings are connected by one or more straight strips to form a circular overall contour. The overall contour can be arranged in the circular hole-shaped heat dissipation hole. For example, two straight strips are arranged in a cross shape, and a plurality of circular rings are connected to the two straight strips, respectively. The ends of the two straight strips are connected to the edges of the heat dissipation hole, respectively.

[0067] Optionally, the upper reinforcing rib 10111 is arranged on the upper top plate 1011 of the quadrilateral; and / or the lower reinforcing rib 20111 is arranged on the lower bottom plate 2011 of the quadrilateral.

[0068] In the embodiment, the upper reinforcing rib 10111 and the lower reinforcing rib 20111 can be arranged together or separately. Preferably, to avoid the occupation of the internal space of the battery pack shell by the upper reinforcing rib 10111 and the lower reinforcing rib 20111, the upper reinforcing rib 10111 is arranged on the outer side of the upper top plate 1011 of the quadrilateral, and the lower reinforcing rib 20111 is arranged on the outer side of the lower bottom plate 2011 of the quadrilateral.

[0069] For example, the number of the upper reinforcing rib 10111 and the lower reinforcing rib 20111 is a plurality. The plurality of upper reinforcing ribs 10111 are arranged along the length direction of the upper shell 10, or the plurality of upper reinforcing ribs 10111 are arranged in a cross shape. In addition, the plurality of lower reinforcing ribs 20111 can be arranged in the same manner as the plurality of upper reinforcing ribs 10111, which will not be described here.

[0070] Optionally, the upper shell 10 and the lower shell 20 are symmetrically arranged in the height direction of the battery pack shell, with a plane perpendicular to the height direction of the battery pack shell and passing through the midpoint of the height direction of the battery pack shell as a reference plane.

[0071] In the embodiment, the upper shell 10 and the lower shell 20 have the same structure, and are symmetrically arranged. In detail, the upper shell 10 and the lower shell 20 are usually manufactured by stamping, die casting or injection molding, etc. These processes involve the use of molds. The same structure of the upper shell 10 and the lower shell 20 can reduce the number of manufacturing molds and the manufacturing cost.

[0072] Optionally, referring to Figure 4 The upper shell 10 comprises a first upper shell 11 and a second upper shell 12; the first upper shell 11 comprises a first upper space 110, and the second upper shell 12 comprises a second upper space 120; the first upper shell 11 and the second upper shell 12 are oppositely buckled, and the first upper space 110 and the second upper space 120 are combined to form an upper mounting space 101.

[0073] And / or, the lower shell 20 comprises a first lower shell 21 and a second lower shell 22; the first lower shell 21 comprises a first lower space 210, and the second lower shell 22 comprises a second lower space 220; the first lower shell 21 and the second lower shell 22 are oppositely buckled, and the first lower space 210 and the second lower space 220 are combined to form a lower mounting space 201.

[0074] Among them, the focus of the embodiment is that the upper shell 10 and the lower shell 20 are split into two parts, and the split setting of the two components can be implemented synchronously or separately.

[0075] Optionally, the first upper shell 11 and the second upper shell 12 are symmetrically arranged about the lengthwise center line of the upper shell 10.

[0076] And / or, the first lower shell 21 and the second lower shell 22 are symmetrically arranged about the lengthwise center line of the lower shell 20.

[0077] Among them, it can be known that the upper shell 10 and the lower shell 20 are divided by the lengthwise center line of each as a reference; in other schemes, the upper shell 10 and the lower shell 20 can be split by other line segments or reference surfaces on them as a reference, for the convenience of description, the individual after the split of the upper shell 10 and the lower shell 20 can be collectively referred to as a sub-shell.

[0078] Preferably, in the embodiment, the upper shell 10 and the lower shell 20 are divided by the lengthwise center line of each as a reference, which has the advantage that the corresponding sub-shells can have a symmetrical structure, which also has the effect of reducing the number of molds and reducing costs as described above.

[0079] Or, in other embodiments, the upper shell 10 and the lower shell 20 can also be split by the widthwise center line of each as a reference. Or, the upper shell 10 and the lower shell 20 can also be split in different proportions in the lengthwise direction or the widthwise direction, such as four-six proportions, three-seven proportions, etc.

[0080] In addition to the above-mentioned split of the upper shell 10 and the lower shell 20 into two parts, the upper shell 10 and the lower shell 20 can also be split into three parts or more. Furthermore, in addition to the above-mentioned lengthwise and widthwise split, the split can also be diagonal, and if necessary, the above-mentioned various split methods can also be combined.

[0081] It should be noted that regardless of the split method, the split method and proportion of the upper shell 10 and the lower shell 20 should be the same, so as to ensure that the upper shell 10 and the lower shell 20 have the maximum number of symmetrically structured sub-shells, and also to reduce the number of molds used in subsequent sub-shell manufacturing and manufacturing costs.

[0082] The above-mentioned focus is on the split of the upper shell 10 and the lower shell 20, and the effect of the split of the two is that: first, the two change large pieces into small pieces, which can easily avoid the problem of local shrinkage caused by inconsistent cooling speed in each area during manufacturing such as injection molding, and the split of small pieces facilitates the handling and storage of the upper shell 10 and the lower shell 20; second, each sub-shell can be replaced individually, so if an individual sub-shell is damaged, it can be replaced specifically, avoiding the high cost of overall replacement; third, according to the position of the battery module corresponding to different sub-shells, when a specific area of the battery module needs to be detected or repaired, the corresponding position sub-shell can be opened, improving work efficiency.

[0083] In addition, the split of the upper shell 10 and the lower shell 20 also involves the symmetry between the respective sub-shells of the upper shell 10 and the lower shell 20, and more preferably, the symmetry between the respective sub-shells of the upper shell 10 and the lower shell 20 can be further achieved, which can further reduce the number of molds used and further reduce manufacturing costs.

[0084] In combination with the foregoing, both the upper reinforcing ribs 10111 and the lower reinforcing ribs 20111 can be dispersedly arranged in the corresponding sub-shells.

[0085] Optionally, referring to Figure 4 The edge of the first upper shell 11 for buckling with the second upper shell 12 is provided with a first upper flange 111, and the edge of the second upper shell 12 for buckling with the first upper shell 11 is provided with a second upper flange 112.

[0086] A plurality of first upper fixing holes are arranged along the length direction of the first upper flange 111, and a plurality of second upper fixing holes are arranged along the length direction of the second upper flange 112, the plurality of first upper fixing holes and the plurality of second upper fixing holes correspond one by one to form a first fixing channel, and an upper fixing member 13 is arranged in the first fixing channel to lock and connect the first upper flange 111 and the second upper flange 112.

[0087] And / or, the edge of the first lower shell 21 for buckling with the second lower shell 22 is provided with a first lower flange 211, and the edge of the second lower shell 22 for buckling with the first lower shell 21 is provided with a second lower flange 212.

[0088] A plurality of first lower fixing holes are arranged along the length direction of the first lower flange 211, and a plurality of second lower fixing holes are arranged along the length direction of the second lower flange 212, the plurality of first lower fixing holes and the plurality of second lower fixing holes correspond one by one to form a second fixing channel, and the lower fixing member 23 is arranged in the second fixing channel to lock and connect the first lower flange 211 and the second lower flange 212.

[0089] Among them, the first upper flange 111 and the second upper flange 112 are arranged as one arrangement scheme, and the first lower flange 211 and the second lower flange 212 are arranged as another scheme, and the two schemes can be arranged separately or jointly.

[0090] Preferably, in order to avoid the first upper flange 111, the second upper flange 112, the first lower flange 211 and the second lower flange 212 occupying the internal space of the battery pack shell, all the above flanges can be selected to be arranged on the outer side of the battery pack shell. In the embodiment, the first upper shell 11 and the second upper shell 12 are obtained by dividing the upper shell 10 along the length direction of the center line, and the first lower shell 21 and the second lower shell 22 are obtained by dividing the lower shell 20 along the length direction of the center line.

[0091] The key point is that the first upper flange 111 and the second upper flange 112 are aligned after the first upper shell 11 and the second upper shell 12 are buckled, and the first lower flange 211 and the second lower flange 212 are aligned after the first lower shell 21 and the second lower shell 22 are buckled. In the embodiment, the upper fixing member 13 and the lower fixing member 23 are preferably bolts, the upper fixing member 13 locks the first upper flange 111 and the second upper flange 112 in the above-mentioned manner, and the lower fixing member 23 locks the first lower shell 21 and the second lower shell 22 in the above-mentioned manner.

[0092] It should be noted that if the upper shell 10 and the lower shell 20 involve other division methods in the foregoing, the corresponding flanges on the edges of the sub-shells generated by each division method, the assembled sub-shells, can be locked between the adjacent two flanges by the bolt locking method described above, which will not be repeated here.

[0093] Referring to Figure 5 The utility model also relates to a battery pack, including battery module 60 and the battery pack shell as above-mentioned, battery module sets up in the battery pack shell.

[0094] The foregoing has described that the battery module is arranged in the battery pack shell, and a specific mounting manner is as follows: the upper part of the side of the battery module 60 is grabbed and placed into the lower shell 20, the position of the battery module 60 in the lower shell 20 is determined, then the upper shell 10 is buckled on the lower shell 20, and the two are locked by the locking member, and then the end plates 40 and the side plates 50 are mounted.

[0095] In addition, it can be known that the battery pack usually further comprises a battery management system (BMS) arranged in the battery pack shell and electrically connected with the battery module 60, and positive and negative pole posts 91 and 92 for external connection, the positive and negative pole posts 91 and 92 are mounted on the end plate 40, one end of each of the positive and negative pole posts 91 and 92 is located in the battery pack shell and electrically connected with the battery management system, and the other end is arranged outside the battery pack shell.

[0096] In particular, the battery pack of the embodiment further comprises at least one cooling fan 80, and the cooling holes 51 on the side plate 50 can be multiple. In combination with the foregoing, the cooling fan 80 is arranged between the cooling hole 51 of the side plate 50 and the side of the battery module 60, preferably, the two sides of the battery module 60 can each be provided with the cooling fan 80, and the cooling fan 80 blows air to the cooling hole 51. In addition, the number of the cooling fan 80 is multiple, and multiple cooling fans 80 can be arranged on the same side of the battery module 60, the cooling fans 80 are arranged in two ends with the center of the length direction of the side plate 50 as a reference, the straight-line distance between the cooling fan 80 on the side of the battery module 60 and the middle part of the battery module 60 is shorter, effectively taking away the heat of the middle part of the battery module 60, and avoiding the problem of local overheating of the battery module 60. In addition, the cooling fan 80 is connected with the external terminal 90, the external terminal 90 is arranged on the end plate 40, and is used for external connection of a power supply to drive the cooling fan 80 to rotate. More preferably, the positive and negative pole posts 91 and 92 and the external terminal 90 are arranged on the same end plate 40, and the purpose is to facilitate the installation of each component and unify the wiring direction of each component, and reduce the wiring difficulty.

[0097] The technical means disclosed in the utility model scheme is not only limited to the technical means disclosed in the above embodiment, but also includes the technical scheme composed of any combination of the above technical features. It should be noted that, for ordinary skilled persons in the technical field, some improvements and refinements can be made without departing from the principle of the utility model, and these improvements and refinements are also regarded as the protection scope of the utility model.

Claims

1. A battery pack housing, characterized by, The upper shell (10) and the lower shell (20) are oppositely buckled, and the upper mounting space (101) and the lower mounting space (201) form a closed space; The upper shell (10) is provided with an upper mounting space (101), The lower shell (20) is provided with a lower mounting space (201), the upper shell (10) and the lower shell (20) are oppositely buckled, and the upper mounting space (101) and the lower mounting space (201) form a closed space; The depth of the upper mounting space (101) and the lower mounting space (201) is less than the height of the battery module (60) placed in the closed space; Wherein, The upper shell (10) includes a first upper shell (11) and a second upper shell (12); The first upper shell (11) includes a first upper space (110), and the second upper shell (12) includes a second upper space (120); the first upper shell (11) and the second upper shell (12) are oppositely buckled, and the first upper space (110) and the second upper space (120) are combined to form the upper mounting space (101); And / or, the lower shell (20) includes a first lower shell (21) and a second lower shell (22); The first lower shell (21) includes a first lower space (210), and the second lower shell (22) includes a second lower space (220); the first lower shell (21) and the second lower shell (22) are oppositely buckled, and the first lower space (210) and the second lower space (220) are combined to form the lower mounting space (201).

2. The battery pack housing of claim 1, wherein, The first upper shell (11) and the second upper shell (12) are symmetrically arranged about the lengthwise center line of the upper shell (10); And / or, the first lower shell (21) and the second lower shell (22) are symmetrically arranged about the lengthwise center line of the lower shell (20).

3. The battery pack enclosure of claim 1, wherein, The first upper shell (11) is provided with a first upper flange (111) at the edge for buckling with the second upper shell (12), and the second upper shell (12) is provided with a second upper flange (112) at the edge for buckling with the first upper shell (11); A plurality of first upper fixing holes are arranged along the length direction of the first upper flange (111), and a plurality of second upper fixing holes are arranged along the length direction of the second upper flange (112); the plurality of first upper fixing holes and the plurality of second upper fixing holes correspond one-to-one to form a first fixing channel, and an upper fixing member (13) is arranged in the first fixing channel to lockingly connect the first upper flange (111) and the second upper flange (112); And / or, the first lower shell (21) is provided with a first lower flange (211) at the edge for buckling with the second lower shell (22), and the second lower shell (22) is provided with a second lower flange (212) at the edge for buckling with the first lower shell (21); A plurality of first lower fixing holes are arranged along the length direction of the first lower flange (211), a plurality of second lower fixing holes are arranged along the length direction of the second lower flange (212), the plurality of first lower fixing holes and the plurality of second lower fixing holes correspond one-to-one to form a second fixing channel, and a lower fixing member (23) is arranged in the second fixing channel to lock and connect the first lower flange (211) and the second lower flange (212).

4. The battery pack housing according to any one of claims 1-3, characterized in that, The upper shell (10) comprises a quadrilateral upper top plate (1011), two upper side plates and two upper end plates, The two upper side plates are arranged on two opposite sides of the quadrilateral upper top plate (1011) one-to-one, and the two upper end plates are arranged on the other two opposite sides of the quadrilateral upper top plate (1011) one-to-one. The lower shell (20) comprises a quadrilateral lower bottom plate (2011), two lower side plates and two lower end plates, The two lower side plates are arranged on two opposite sides of the quadrilateral lower bottom plate (2011) one-to-one, and the two lower end plates are arranged on the other two opposite sides of the quadrilateral lower bottom plate (2011) one-to-one.

5. The battery pack enclosure of claim 4, wherein, The four outer corners of the quadrilateral upper top plate (1011) are each provided with an upper fixing column (14), the upper fixing column (14) is provided with an upper locking hole (141), the four outer corners of the quadrilateral lower bottom plate (2011) are each provided with a lower fixing column (24), and the lower fixing column (24) is provided with a lower locking hole (241); When the upper shell (10) and the lower shell (20) are buckled relative to each other, the four upper locking holes (141) and the four lower locking holes (241) are aligned one-to-one to form a locking channel, and a locking member is arranged in the locking channel to lock and close the upper shell (10) and the lower shell (20).

6. The battery pack enclosure of claim 5, wherein, The upper side plates and the lower side plates buckled relative to each other are integrally formed to form side plates (50), and the upper end plates and the lower end plates buckled relative to each other are integrally formed to form end plates (40); The upper fixing column (14) and the lower fixing column (24) buckled relative to each other form a group of connecting columns, and two groups of adjacent connecting columns form four accommodation spaces, and the two side plates (50) and the two end plates (40) are arranged in the four accommodation spaces one-to-one.

7. The battery pack enclosure of claim 6, wherein, The side plates (50) are provided with heat dissipation holes (51); Among them, The heat dissipation holes are small-diameter holes, and the number of the small-diameter holes is a plurality, and the plurality of small-diameter holes are arranged in sequence; Or, the heat dissipation holes are large-diameter holes, and a plurality of blocking strips are arranged in the large-diameter holes.

8. The battery pack enclosure of claim 4, wherein, The quadrilateral upper top plate (1011) is provided with a plurality of upper reinforcing ribs (10111), and the plurality of upper reinforcing ribs (10111) are arranged in sequence or cross each other; And / or, the quadrilateral lower bottom plate (2011) is provided with a plurality of lower reinforcing ribs (20111), and the plurality of lower reinforcing ribs (20111) are arranged in sequence or cross each other.

9. The battery pack enclosure of any one of claims 1-4, 6-8, wherein, In the height direction of the battery pack case, the upper case (10) and the lower case (20) are symmetrically arranged with reference to a reference plane which is perpendicular to the height direction of the battery pack case and passes through the midpoint of the height direction of the battery pack case.

10. A battery pack, characterized by, The battery pack case comprises a battery module (60) and any one of the battery pack cases according to claims 1-9. The battery module is arranged in the battery pack case.

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