Battery shell, battery pack and new energy automobile

Abstract

The embodiment of the utility model provides a battery case, a battery pack and a new energy automobile, and relates to the technical field of power batteries. The battery shell comprises a lower shell body, an end plate assembly, a plurality of first fixed beams and a plurality of second fixed beams, wherein the end plate assembly comprises a first end plate, a middle beam and a second end plate which are arranged on the lower shell body at intervals in the first direction; the multiple first fixing beams and the multiple second fixing beams are arranged on the lower shell at intervals in the second direction, the two ends of the first fixing beams and the two ends of the second fixing beams are connected with the first end plate and the second end plate correspondingly, and the multiple second fixing beams and the multiple first fixing beams are arranged at intervals in the third direction and correspond one to one; a first battery containing space is formed among the adjacent first fixing beam, the second fixing beam, the first end plate, the middle beam and the lower shell, and a second battery containing space is formed among the adjacent first fixing beam, the second fixing beam, the second end plate, the middle beam and the lower shell. The battery shell can improve the overall modal structural strength of the battery pack and the mounting stability of the battery.

Description

Technical Field

[0001] The utility model relates to the technical field of power batteries, and in particular to a battery shell, a battery pack and a new energy vehicle. Background Art

[0002] In the power battery industry, the battery pack of new energy vehicles is a complex integrated system composed of multiple batteries, battery restraint structures, electrical components, thermal management systems, battery management systems, etc.

[0003] For small-capacity battery packs, a module-free grouping method is usually adopted to reduce the number of component types; while for high-capacity and large-volume battery packs, due to the large length of the entire pack, a single-piece module-free method is adopted, which will result in a lower overall modal structural strength of the battery pack and the battery will not be easy to install stably. Utility Model Content

[0004] The purpose of the utility model is to provide a battery shell, a battery pack and a new energy vehicle, which can improve the overall modal structural strength of the battery pack and enhance the installation stability of the battery.

[0005] The embodiment of the utility model is achieved as follows:

[0006] In a first aspect, the utility model provides a battery case, comprising:

[0007] Lower housing;

[0008] An end plate assembly, the end plate assembly comprising a first end plate, a middle beam and a second end plate spaced apart from each other on the lower shell along a first direction;

[0009] a plurality of first fixing beams, which are spaced apart on the lower housing along the second direction and have two ends connected to the first end plate and the second end plate respectively; and

[0010] a plurality of second fixed beams, the plurality of second fixed beams are arranged at intervals on the middle beam along the second direction, and two ends of the second fixed beams are connected to the first end plate and the second end plate respectively, and the plurality of second fixed beams are arranged at intervals and correspond one to one with the plurality of first fixed beams along the third direction;

[0011] Among them, a first battery accommodating space is formed between two adjacent first fixed beams and the second fixed beam and the first end plate, the middle beam and the lower shell, and a second battery accommodating space is formed between two adjacent first fixed beams and the second fixed beam and the second end plate, the middle beam and the lower shell; the first direction, the second direction and the third direction are perpendicular to each other.

[0012] In an optional embodiment, the middle beam is provided with a plurality of first grooves and a plurality of second grooves on both sides along the third direction, and the plurality of first grooves and the plurality of second grooves are arranged at intervals and correspond one to one along the second direction; the first fixed beam is passed through the first groove, and the second fixed beam is passed through the second groove.

[0013] In an optional embodiment, the battery shell also includes a plurality of first positioning blocks, which are arranged at intervals along the second direction and are respectively located on one side of the plurality of first fixed beams close to the first groove; a first positioning block is provided in each of the first grooves, and the first positioning block is connected to the inner wall of the first groove.

[0014] In an optional embodiment, the battery shell also includes a plurality of second positioning blocks and a plurality of third positioning blocks, and the plurality of second positioning blocks, the plurality of first positioning blocks and the plurality of third positioning blocks are spaced apart along the first direction; the plurality of second positioning blocks are spaced apart along the second direction, and are respectively located on a side of the plurality of first fixed beams away from the lower shell body, and the plurality of second positioning blocks are all connected to the first end plate; the plurality of third positioning blocks are spaced apart along the second direction, and are respectively located on a side of the plurality of first fixed beams away from the lower shell body, and the plurality of third positioning blocks are all connected to the second end plate.

[0015] In an optional embodiment, the battery shell also includes a plurality of crimping parts, which are arranged at intervals along the second direction and are respectively located on the plurality of second fixed beams; one crimping part is provided in each of the second grooves, and the crimping part is connected to the inner wall of the second groove.

[0016] In an optional embodiment, two ends of the middle beam extend along the second direction to form a first protrusion and a second protrusion, respectively, and the first protrusion and the second protrusion are respectively connected to two opposite side walls of the lower shell;

[0017] The battery case also includes a first end beam, a second end beam, a third end beam and a fourth end beam, the first end beam and the second end beam are respectively arranged on both sides of the first protrusion along the third direction, and both ends of the first end beam and the second end beam are respectively connected to the first end plate and the second end plate; the third end beam and the fourth end beam are respectively arranged on both sides of the second protrusion along the third direction, and both ends of the third end beam and the fourth end beam are respectively connected to the first end plate and the second end plate.

[0018] In an optional embodiment, the battery shell further includes a battery management system bracket, and the battery management system bracket includes a first bracket and a second bracket, and the first bracket and the second bracket are stacked on the lower shell.

[0019] In a second aspect, the utility model provides a battery pack, comprising a first battery group, a second battery group and a battery shell as described in any one of the aforementioned embodiments, wherein the first battery group is arranged in the first battery accommodating space, and the second battery group is arranged in the second battery accommodating space.

[0020] In an optional embodiment, the battery pack further includes a liquid cooling plate and a liquid cooling plate bracket, wherein the liquid cooling plate is sequentially arranged on the first end plate, the middle beam, and a side of the second end plate close to the lower shell, and the liquid cooling plate is arranged between the first battery pack and the second battery pack and the lower shell;

[0021] At least one of the first end plate and the second end plate is provided with an avoidance gap, the liquid cooling plate bracket is arranged at one end of the liquid cooling plate, and the liquid cooling plate bracket passes through the avoidance gap and is connected to the lower shell.

[0022] In a third aspect, the utility model provides a new energy vehicle, comprising the battery pack described in the aforementioned embodiment.

[0023] The beneficial effects of the embodiments of the utility model include:

[0024] The battery shell includes a lower shell, an end plate assembly, a plurality of first fixed beams and a plurality of second fixed beams, the end plate assembly includes a first end plate, a middle beam and a second end plate arranged at intervals on the lower shell along a first direction; a plurality of first fixed beams are arranged at intervals on the lower shell along a second direction, and both ends are connected to the first end plate and the second end plate respectively; a plurality of second fixed beams are arranged at intervals on the middle beam along the second direction, and both ends are connected to the first end plate and the second end plate respectively, and a plurality of second fixed beams are arranged at intervals and correspond one to one with a plurality of first fixed beams along a third direction; wherein a first battery accommodating space is formed between two adjacent first fixed beams and the second fixed beams and the first end plate, the middle beam and the lower shell, and a second battery accommodating space is formed between two adjacent first fixed beams and the second fixed beams and the second end plate, the middle beam and the lower shell; the first direction, the second direction and the third direction are perpendicular to each other.

[0025] That is to say, by setting the first end plate, the middle beam and the second end plate at intervals, overlapping a plurality of first fixed beams on the middle beam and simultaneously connecting with the first end plate and the second end plate at both ends, and setting a plurality of second fixed beams on the lower shell body and similarly connecting with the first end plate and the second end plate, a stable frame structure can be formed, thereby improving the rigidity of the battery shell and further improving the overall modal structural strength of the battery pack; at the same time, the frame structure has a first battery accommodating space for installing a first battery pack and a second battery accommodating space for installing a second battery pack, and the battery can be fixed in three directions at the same time, thereby improving the installation stability of the battery.

[0026] The battery pack includes a battery case, which has all the beneficial effects of the battery case.

[0027] The new energy vehicle includes a battery pack, which has all the beneficial effects of the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 A schematic diagram of the structure of a new energy vehicle provided by an embodiment of the utility model;

[0030] Figure 2 A schematic diagram of the structure of a battery pack provided by an embodiment of the utility model;

[0031] Figure 3 A schematic diagram of the structure of a battery case provided by an embodiment of the utility model;

[0032] Figure 4 An exploded view of a battery case provided in an embodiment of the utility model;

[0033] Figure 5 A schematic diagram of the structure of the middle beam provided in an embodiment of the utility model;

[0034] Figure 6 A schematic diagram of the structure of a battery management system support provided by an embodiment of the utility model;

[0035] Figure 7 A schematic diagram of the assembly of a battery management system and a battery management system bracket provided in an embodiment of the utility model;

[0036] Figure 8 An exploded view of a battery pack provided in an embodiment of the utility model;

[0037] Fig. 9 A schematic structural diagram of a first end plate provided in an embodiment of the utility model.

[0038] Icons: 1000-new energy vehicle; 1100-battery pack; 100-battery shell; 10-lower shell; 20-end plate assembly; 21-first end plate; 211-avoidance gap; 22-middle beam; 221-first groove; 222-second groove; 223-first protrusion; 224-second protrusion; 23-second end plate; 30-first fixing beam; 40-second fixing beam; 51-first battery accommodating space; 52-second battery accommodating space; 61-first positioning block ;62-second positioning block;63-third positioning block;64-crimping piece;71-first end beam;72-second end beam;73-third end beam;74-fourth end beam;80-battery management system bracket;81-first bracket;82-second bracket;200-first battery pack;300-second battery pack;400-liquid cooling plate;500-liquid cooling plate bracket;600-battery management system;610-first management module;620-second management module;1200-vehicle body. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0040] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0042] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0043] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0044] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] As described in the background technology, in the power battery industry, the battery pack of new energy vehicles is a complex integrated system, which is composed of multiple batteries, battery restraint structural parts, electrical parts, thermal management system, battery management system, etc. For small-capacity battery packs, in order to reduce the number of component types, a module-free grouping method is usually adopted; while for high-capacity and large-volume battery packs, due to the large length of the entire pack, the use of a single-chip area module-free method will result in a low overall modal structural strength of the battery pack, and the battery is not easy to install stably.

[0046] Based on this, please refer to Figure 1-Figure 9 The embodiments of the utility model provide a battery case 100, a battery pack 1100 and a new energy vehicle 1000, which can effectively improve the above-mentioned technical problems, that is, they can improve the overall modal structural strength of the battery pack 1100 and enhance the installation stability of the battery.

[0047] It should be noted that the first direction mentioned in the following content is Figure 3 and Figure 4 The X direction is shown in the figure, and the second direction is Figure 3 and Figure 4 The Y direction is shown in the figure, and the third direction is Figure 3 and Figure 4 The Z direction is shown in the figure, and the battery shell 100, the battery pack 1100 and the new energy vehicle 1000 will be described in detail below.

[0048] Please refer to Figure 1 , Figure 1 The schematic diagram of the structure of the new energy vehicle 1000 provided in this embodiment is combined with Figure 1 The new energy vehicle 1000 includes a battery pack 1100 and a vehicle body 1200 . The battery pack 1100 is installed on the vehicle body 1200 , thereby providing electric energy for the vehicle body 1200 to realize various functions of the vehicle body 1200 .

[0049] Please refer to Figure 2 , Figure 2 The schematic diagram of the structure of the battery pack 1100 provided in this embodiment, the battery pack 1100 includes a battery shell 100, a first battery group 200 and a second battery group 300, the first battery group 200 and the second battery group 300 are both arranged in the battery shell 100. It is easy to understand that the first battery group 200 and the second battery group 300, as the energy source of the battery pack 1100, can provide electrical energy to the vehicle body 1200, thereby realizing various tasks of the new energy vehicle 1000.

[0050] Specifically, please refer to Figure 3 and Figure 4 , Figure 3 This is a schematic diagram of the structure of the battery case 100 provided in this embodiment. Figure 4 The exploded view of the battery case 100 provided in this embodiment, combined with Figure 3 and Figure 4 The battery case 100 includes a lower shell 10, an end plate assembly 20, a plurality of first fixed beams 30 and a plurality of second fixed beams 40, the end plate assembly 20 includes a first end plate 21, a middle beam 22 and a second end plate 23 arranged at intervals along the first direction on the lower shell 10; a plurality of first fixed beams 30 are arranged at intervals along the second direction on the lower shell 10, and the two ends are connected to the first end plate 21 and the second end plate 23 respectively; a plurality of second fixed beams 40 are arranged at intervals along the second direction on the middle beam 22, and the two ends are connected to the first end plate 21 and the second end plate 23 respectively. The two end plates 23 are connected, and the multiple second fixed beams 40 and the multiple first fixed beams 30 are arranged at intervals and correspond one to one along the third direction; wherein, a first battery accommodating space 51 is formed between two adjacent first fixed beams 30 and the second fixed beam 40 and the first end plate 21, the middle beam 22 and the lower shell 10, and a second battery accommodating space 52 is formed between two adjacent first fixed beams 30 and the second fixed beam 40 and the second end plate 23, the middle beam 22 and the lower shell 10; the first direction, the second direction and the third direction are perpendicular to each other.

[0051] By setting the first end plate 21, the middle beam 22 and the second end plate 23 at intervals, and overlapping a plurality of first fixed beams 30 on the middle beam 22 and simultaneously connected to the first end plate 21 and the second end plate 23 at both ends, and setting a plurality of second fixed beams 40 on the lower shell 10 and similarly connected to the first end plate 21 and the second end plate 23, a stable frame structure can be formed, thereby improving the rigidity of the battery shell 100, and further improving the overall modal structural strength of the battery pack 1100; at the same time, the frame structure has a first battery accommodating space 51 for installing the first battery group 200 and a second battery accommodating space 52 for installing the second battery group 300, and the battery can be fixed in three directions at the same time, thereby improving the installation stability of the battery.

[0052] Combination Figure 2 and Figure 3 That is to say, in this embodiment, the first battery group 200 is arranged in the first battery accommodating space 51, and the second battery group 300 is arranged in the second battery accommodating space 52. The first end plate 21 and the middle beam 22 can fix the first battery group 200 in the first direction, and the second end plate 23 and the middle beam 22 can also fix the second battery group 300 in the first direction; at the same time, the first battery group 200 and the second battery group 300 can be fixed in the second direction by two adjacent first fixed beams 30 and two adjacent second fixed beams 40; and the interval between the first fixed beam 30 and the second fixed beam 40 can also fix the first battery group 200 and the second battery group 300 in the third direction, thereby improving the installation stability of the battery and improving the overall structural strength of the battery shell 100 to a certain extent.

[0053] It should be noted that, in this embodiment, the first fixing beam 30 and the second fixing beam 40 are both in a "T" shape; Figure 4 As shown, specifically, the first fixed beam 30 is an inverted "T" shape, which can also be understood as a "J" shape, while the second fixed beam 40 is a positive "T" shape; in this way, through this "T" shaped structure, the top and bottom of the first battery pack 200 and the second battery pack 300 can be limited and fixed, thereby further improving the installation stability; in addition, this "T" shaped structure of the first fixed beam 30 and the second fixed beam 40 has an extension structure extending to both sides, which can also provide a mounting track for the battery pack, thereby improving assembly efficiency.

[0054] Of course, in other embodiments, the first fixing beam 30 and the second fixing beam 40 may also be in other shapes as long as they can ensure the function of fixing the battery.

[0055] In order to improve the installation convenience and space utilization of the battery case 100, please refer to Figure 5, Figure 5 The schematic diagram of the structure of the middle beam 22 provided in this embodiment, combined with Figure 3-Figure 5 A plurality of first grooves 221 and a plurality of second grooves 222 are respectively provided on both sides of the middle beam 22 along the third direction. The plurality of first grooves 221 and the plurality of second grooves 222 are arranged at intervals along the second direction and correspond one to one; the first fixed beam 30 is penetrated in the first groove 221, and the second fixed beam 40 is penetrated in the second groove 222.

[0056] That is to say, when assembling the battery shell 100, the first fixing beam 30 is directly passed through the first groove 221, and the two ends are respectively connected to the first end plate 21 and the second end plate 23; then the second fixing beam 40 is passed through the second groove 222, and the two ends are respectively connected to the first end plate 21 and the second end plate 23, which is simple and convenient to operate. In addition, since the first fixing beam 30 and the second fixing beam 40 are respectively arranged in the first groove 221 and the second groove 222, the bottom of the first fixing beam 30 can be flush with the bottom of the middle beam 22 or exceed a small part, and the top of the second fixing beam 40 can be flush with the top of the middle beam 22 or exceed a small part, thereby saving the installation space of the battery and reducing the interference with other components of the battery pack 1100.

[0057] In order to facilitate the assembly of the first fixing beam 30, the battery case 100 further includes a plurality of first positioning blocks 61, which are arranged at intervals along the second direction and are respectively located on one side of the plurality of first fixing beams 30 close to the first groove 221; a first positioning block 61 is arranged in each first groove 221, and the first positioning block 61 is connected to the inner wall of the first groove 221. In this way, during assembly, the first positioning block 61 can be firstly arranged on the first fixing beam 30, and then the first groove 221 on the middle beam 22 is matched with the first positioning block 61 and installed.

[0058] It should be noted that, by disposing the first positioning block 61 in the first groove 221 and connecting it to the inner wall thereof, the connection stability between the first fixed beam 30 and the middle beam 22 can be further improved.

[0059] Please combine Figure 4 and Figure 5In order to further improve the convenience of installation and the stability of the overall structure, in the present embodiment, the battery case 100 further includes a plurality of second positioning blocks 62 and a plurality of third positioning blocks 63, and the plurality of second positioning blocks 62, the plurality of first positioning blocks 61 and the plurality of third positioning blocks 63 are arranged at intervals along the first direction; the plurality of second positioning blocks 62 are arranged at intervals along the second direction, and are respectively located on the side of the plurality of first fixing beams 30 away from the lower shell 10, and the plurality of second positioning blocks 62 are all connected to the first end plate 21; the plurality of third positioning blocks 63 are arranged at intervals along the second direction, and are respectively located on the side of the plurality of first fixing beams 30 away from the lower shell 10, and the plurality of third positioning blocks 63 are all connected to the second end plate 23.

[0060] By setting the first positioning block 61, the second positioning block 62 and the third positioning block 63, installation points can be provided for the middle beam 22, the first end plate 21 and the second end plate 23 to facilitate installation, and the first positioning block 61, the second positioning block 62 and the third positioning block 63 can simultaneously connect the first fixed beam 30 with the middle beam 22, the first end plate 21 and the second end plate 23, thereby further improving the overall structural strength of the battery shell 100.

[0061] Please continue to combine Figure 3-Figure 5 In order to ensure the connection stability between the second fixed beam 40 and the middle beam 22, the battery case 100 further includes a plurality of crimping members 64, which are arranged at intervals along the second direction and are respectively located on the plurality of second fixed beams 40; a crimping member 64 is provided in each second groove 222, and the crimping member 64 is connected to the inner wall of the second groove 222. It can be understood that during assembly, the second fixed beam 40 is first arranged in the second groove 222, and then the crimping member 64 is arranged on the second fixed beam 40 and connected to the inner wall of the second groove 222, so that the second fixed beam 40 is stably fixed on the middle beam 22.

[0062] It should be noted that in order to facilitate the connection between the crimping piece 64 and the first positioning block 61 and the middle beam 22, in this embodiment, the bolts can be directly passed through the crimping piece 64, the middle beam 22 and the first positioning block 61 in sequence by bolt connection, so that the crimping piece 64 and the first positioning block 61 can be connected to the middle beam 22 at the same time by one bolt, which improves the installation efficiency and reduces the cost.

[0063] Please continue to combine Figure 3 and Figure 4In order to increase the energy density of the battery pack 1100 so that it can accommodate more battery packs, in the present embodiment, the two ends of the middle beam 22 extend along the second direction to form a first protrusion 223 and a second protrusion 224, respectively, and the first protrusion 223 and the second protrusion 224 are respectively connected to the two opposite side walls of the lower shell 10; the battery shell 100 also includes a first end beam 71, a second end beam 72, a third end beam 73 and a fourth end beam 74, the first end beam 71 and the second end beam 72 are respectively arranged on both sides of the first protrusion 223 along the third direction, and the two ends of the first end beam 71 and the second end beam 72 are respectively connected to the first end plate 21 and the second end plate 23; the third end beam 73 and the fourth end beam 74 are respectively arranged on both sides of the second protrusion 224 along the third direction, and the two ends of the third end beam 73 and the fourth end beam 74 are respectively connected to the first end plate 21 and the second end plate 23.

[0064] That is to say, a battery pack can be fixed between the first end beam 71, the second end beam 72 and the adjacent first fixed beam 30 and the second fixed beam 40, and a battery pack can also be fixed between the third end beam 73, the fourth end beam 74 and the adjacent first fixed beam 30 and the second fixed beam 40; specifically, a first battery accommodating space 51 is formed between the first end plate 21, the middle end plate and the first end beam 71, the second end beam 72, the first fixed beam 30, the second fixed beam 40 and the lower shell 10, and the second end plate 23, the middle end plate are also connected to the first end beam 71, the second end beam 72, the first fixed beam 30, the second fixed beam 40 A second battery accommodating space 52 is formed between the fixed beam 40 and the lower shell 10; similarly, a first battery accommodating space 51 is formed between the first end plate 21, the middle end plate and the third end beam 73, the fourth end beam 74, the first fixed beam 30, the second fixed beam 40 and the lower shell 10, and a second battery accommodating space 52 is formed between the second end plate 23, the middle end plate and the third end beam 73, the fourth end beam 74, the first fixed beam 30, the second fixed beam 40 and the lower shell 10; thereby, the number of the first battery pack 200 and the second battery pack 300 can be increased, thereby improving the energy density of the whole package. In addition, the first end beam 71, the second end beam 72, the third end beam 73 and the fourth end beam 74 can also improve the overall structural strength of the battery shell 100.

[0065] In this embodiment, the battery pack 1100 further includes a battery management system 600, and in order to facilitate the installation of the battery management system 600, the battery housing 100 further includes a battery management system bracket 80. Figure 6 and Figure 7 , Figure 6 This is a schematic diagram of the structure of the battery management system bracket 80 provided in this embodiment. Figure 7 The assembly diagram of the battery management system 600 and the battery management system bracket 80 provided in this embodiment is combined with Figure 6 and Figure 7The battery management system bracket 80 includes a first bracket 81 and a second bracket 82, and the first bracket 81 and the second bracket 82 are stacked on the lower shell 10, thereby improving space utilization; at the same time, the battery management system 600 includes a first management module 610 and a second management module 620, and the first management module 610 is arranged on the first bracket 81, and the second management module 620 is arranged on the second bracket 82.

[0066] Please refer to Figure 8 , Figure 8 The exploded view of the battery pack 1100 provided in this embodiment is combined with Figure 8 In this embodiment, the battery pack 1100 further includes a liquid cooling plate 400 , which can heat or dissipate heat for the first battery pack 200 and the second battery pack 300 .

[0067] To facilitate the assembly of the liquid cooling plate 400, please refer to Fig. 9 , Fig. 9 This is a schematic diagram of the structure of the first end plate 21 provided in this embodiment. Figure 4 , Figure 8 and Fig. 9 The liquid cooling plate 400 is sequentially arranged on the first end plate 21, the middle beam 22 and the side of the second end plate 23 close to the lower shell 10, and a liquid cooling plate 400 is arranged between the first battery group 200 and the second battery group 300 and the lower shell 10; at least one of the first end plate 21 and the second end plate 23 is provided with an avoidance gap 211, and the battery pack 1100 also includes a liquid cooling plate bracket 500, which is arranged at one end of the liquid cooling plate 400, and the liquid cooling plate bracket 500 is passed through the avoidance gap 211 and connected to the lower shell 10.

[0068] By providing the liquid cooling plate bracket 500 and the avoidance gap 211, as well as the positional relationship between the liquid cooling plate 400 and the first end plate 21, the second end plate 23 and the middle beam 22, the difficulty of assembling the liquid cooling plate 400 can be reduced. Moreover, by raising one end of the liquid cooling plate 400 and connecting it to the lower shell 10 through the avoidance gap 211 using the liquid cooling plate bracket 500, the connection stability of the liquid cooling plate 400 can be improved while avoiding interference with other components.

[0069] It should be noted that in this embodiment, the first end plate 21 and the second end plate 23 are both provided with an avoidance notch 211, which can improve the installation adaptability. Even if the first end plate 21 and the second end plate 23 are installed interchangeably, they can still be installed in an adaptable manner with the liquid cooling plate bracket 500, thereby improving the installation efficiency.

[0070] In summary, the embodiments of the present invention provide a battery case 100, a battery pack 1100 and a new energy vehicle 1000. The battery case 100 includes a lower shell 10, an end plate assembly 20, a plurality of first fixing beams 30 and a plurality of second fixing beams 40. The end plate assembly 20 includes a first end plate 21, a middle beam 22 and a second end plate 23 arranged at intervals along a first direction on the lower shell 10; a plurality of first fixing beams 30 are arranged at intervals along a second direction on the lower shell 10, and the two ends are connected to the first end plate 21 and the second end plate 23 respectively; a plurality of second fixing beams 40 are arranged at intervals along the second direction on the lower shell 10 A middle beam 22, and its two ends are respectively connected to the first end plate 21 and the second end plate 23, a plurality of second fixed beams 40 and a plurality of first fixed beams 30 are arranged at intervals and correspond one to one along the third direction; wherein, a first battery accommodating space 51 is formed between two adjacent first fixed beams 30 and the second fixed beam 40 and the first end plate 21, the middle beam 22 and the lower shell 10, and a second battery accommodating space 52 is formed between two adjacent first fixed beams 30 and the second fixed beam 40 and the second end plate 23, the middle beam 22 and the lower shell 10; the first direction, the second direction and the third direction are perpendicular to each other.

[0071] That is to say, by setting the first end plate 21, the middle beam 22 and the second end plate 23 at intervals, and overlapping a plurality of first fixed beams 30 on the middle beam 22 and simultaneously connected to the first end plate 21 and the second end plate 23 located at both ends, and setting a plurality of second fixed beams 40 on the lower shell 10 and similarly connected to the first end plate 21 and the second end plate 23, a stable frame structure can be formed, thereby improving the rigidity of the battery shell 100, and further improving the overall modal structural strength of the battery pack 1100; at the same time, the frame structure has a first battery accommodating space 51 for installing the first battery group 200 and a second battery accommodating space 52 for installing the second battery group 300, and the battery can be fixed in three directions at the same time, thereby improving the installation stability of the battery.

[0072] The battery pack 1100 includes the battery case 100 , and has all the functions and beneficial effects of the battery case 100 .

[0073] The new energy vehicle 1000 includes a battery pack 1100 , which has all the functions and beneficial effects of the battery pack 1100 .

[0074] The above description is only a specific embodiment of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A battery shell, characterized in that: include: Lower housing (10); An end plate assembly (20), the end plate assembly (20) comprising a first end plate (21), a middle beam (22) and a second end plate (23) arranged at intervals on the lower shell (10) along a first direction; a plurality of first fixed beams (30), the plurality of first fixed beams (30) being arranged at intervals on the lower shell (10) along the second direction, and having two ends respectively connected to the first end plate (21) and the second end plate (23); as well as a plurality of second fixed beams (40), the plurality of second fixed beams (40) being arranged at intervals on the middle beam (22) along the second direction, and having two ends respectively connected to the first end plate (21) and the second end plate (23), and the plurality of second fixed beams (40) and the plurality of first fixed beams (30) being arranged at intervals along the third direction and corresponding one to one; A first battery accommodating space (51) is formed between two adjacent first fixed beams (30) and the second fixed beam (40) and the first end plate (21), the middle beam (22) and the lower shell (10); a second battery accommodating space (52) is formed between two adjacent first fixed beams (30) and the second fixed beam (40) and the second end plate (23), the middle beam (22) and the lower shell (10); and the first direction, the second direction and the third direction are perpendicular to each other.

2. The battery case according to claim 1, characterized in that: The middle beam (22) is provided with a plurality of first grooves (221) and a plurality of second grooves (222) on both sides along the third direction, and the plurality of first grooves (221) and the plurality of second grooves (222) are arranged at intervals and correspond one to one along the second direction; the first fixing beam (30) is passed through the first groove (221), and the second fixing beam (40) is passed through the second groove (222).

3. The battery case according to claim 2, characterized in that: The battery shell (100) further comprises a plurality of first positioning blocks (61), the plurality of first positioning blocks (61) being arranged at intervals along the second direction and respectively located on a side of the plurality of first fixing beams (30) close to the first groove (221); each of the first grooves (221) is provided with a first positioning block (61), and the first positioning block (61) is connected to an inner wall of the first groove (221).

4. The battery case according to claim 3, characterized in that: The battery shell (100) further comprises a plurality of second positioning blocks (62) and a plurality of third positioning blocks (63), wherein the plurality of second positioning blocks (62), the plurality of first positioning blocks (61) and the plurality of third positioning blocks (63) are arranged at intervals along the first direction; the plurality of second positioning blocks (62) are arranged at intervals along the second direction and are respectively located on a side of the plurality of first fixing beams (30) away from the lower shell (10), and the plurality of second positioning blocks (62) are all connected to the first end plate (21); the plurality of third positioning blocks (63) are arranged at intervals along the second direction and are respectively located on a side of the plurality of first fixing beams (30) away from the lower shell (10), and the plurality of third positioning blocks (63) are all connected to the second end plate (23).

5. The battery case according to claim 2, characterized in that: The battery shell (100) further comprises a plurality of crimping members (64), the plurality of crimping members (64) being arranged at intervals along the second direction and respectively located on the plurality of second fixing beams (40); a crimping member (64) is provided in each of the second grooves (222), and the crimping member (64) is connected to the inner wall of the second groove (222).

6. The battery case according to claim 1, characterized in that: The two ends of the middle beam (22) extend along the second direction to form a first protrusion (223) and a second protrusion (224), respectively; the first protrusion (223) and the second protrusion (224) are respectively connected to two opposite side walls of the lower shell (10); The battery shell (100) also includes a first end beam (71), a second end beam (72), a third end beam (73) and a fourth end beam (74); the first end beam (71) and the second end beam (72) are respectively arranged on both sides of the first protrusion (223) along the third direction, and both ends of the first end beam (71) and the second end beam (72) are respectively connected to the first end plate (21) and the second end plate (23); the third end beam (73) and the fourth end beam (74) are respectively arranged on both sides of the second protrusion (224) along the third direction, and both ends of the third end beam (73) and the fourth end beam (74) are respectively connected to the first end plate (21) and the second end plate (23).

7. The battery case according to claim 1, characterized in that: The battery housing (100) further comprises a battery management system bracket (80), wherein the battery management system bracket (80) comprises a first bracket (81) and a second bracket (82), wherein the first bracket (81) and the second bracket (82) are stacked on the lower housing (10).

8. A battery pack, characterized in that: The battery case (100) comprises a first battery group (200), a second battery group (300) and the battery housing (100) according to any one of claims 1 to 7, wherein the first battery group (200) is arranged in the first battery accommodating space (51), and the second battery group (300) is arranged in the second battery accommodating space (52).

9. The battery pack according to claim 8, characterized in that: The battery pack (1100) further comprises a liquid cooling plate (400) and a liquid cooling plate bracket (500), wherein the liquid cooling plate (400) is sequentially arranged on the first end plate (21), the middle beam (22) and a side of the second end plate (23) close to the lower shell (10), and the liquid cooling plate (400) is arranged between the first battery group (200) and the second battery group (300) and the lower shell (10); At least one of the first end plate (21) and the second end plate (23) is provided with an avoidance notch (211), the liquid cooling plate bracket (500) is arranged at one end of the liquid cooling plate (400), and the liquid cooling plate bracket (500) is passed through the avoidance notch (211) and is connected to the lower shell (10).

10. A new energy vehicle, characterized in that: Includes the battery pack (1100) as described in claim 8 or 9.

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