CN219067077U - Battery shell, battery pack and new energy automobile - Google Patents

Abstract

The embodiment of the utility model provides a battery shell, a battery pack and a new energy automobile, and relates to the technical field of batteries. The battery shell comprises a shell body, a movable middle cross beam, a transverse pressing plate and a plurality of T-shaped longitudinal beams, wherein a plurality of mounting lugs are convexly arranged on the bottom wall of the shell body, and the mounting lugs are distributed at intervals along the transverse direction; the bottom of the movable middle cross beam is detachably mounted on the plurality of mounting lugs at the same time, so that the movable middle cross beam is transversely arranged in the shell. In this way, the movable center sill can strengthen the rigidity of the entire center. The movable middle cross beam is provided with a plurality of mounting grooves which extend downwards from the top of the movable middle cross beam, and the plurality of mounting grooves are distributed at intervals along the transverse direction; the T-shaped longitudinal beams are matched with the mounting grooves in a one-to-one correspondence mode, and the T-shaped longitudinal beams are used for separating two adjacent rows of battery cell groups in the battery pack. Meanwhile, the transverse pressing plate is detachably arranged on the movable middle cross beam and used for crimping the plurality of T-shaped longitudinal beams. So that the overall rigidity requirement is met.

Description

Battery shell, battery pack and new energy automobile

Technical Field

The utility model relates to the technical field of batteries, in particular to a battery shell, a battery pack and a new energy automobile.

Background

In the power battery industry, a battery pack of a new energy automobile is a complex integrated system, a plurality of battery cells are combined into a single module, and then the modules are assembled into the battery pack. The battery module is assembled by arranging single cells in sequence according to the serial-parallel connection requirement, installing end plates at two ends of the cells, welding side plates at two sides of the cells with the end plates, and wrapping the cells in a cavity to form a module. The complete battery pack needs a plurality of modules, and according to the space condition of the battery pack box body, the battery pack is well discharged at one time, and the electric quantity required by design is achieved after the battery pack is connected in series through soft connection. The mode assembly mode is complex, so that a non-module battery pack assembly mode is derived, a plurality of modules can be integrated into a symmetrical and regular non-module state under the condition of sufficient envelope space, the types of materials are reduced, and the assembly process is simplified.

Researchers have found that such non-modular battery packs often suffer from insufficient rigidity.

Disclosure of Invention

The utility model provides a battery shell, a battery pack and a new energy automobile, which can meet the integral rigidity requirement.

Embodiments of the utility model may be implemented as follows:

an embodiment of the present utility model provides a battery case for assembling at least two battery packs, each of the battery packs including a plurality of rows of battery cell packs, the battery case comprising:

the bottom wall of the shell is convexly provided with a plurality of mounting lugs which are distributed at intervals along the transverse direction;

the bottom of the movable middle cross beam is simultaneously and detachably arranged on the plurality of mounting lugs, so that the movable middle cross beam is transversely arranged in the shell, and the opposite sides of the movable middle cross beam are used for respectively mounting at least one battery pack; the movable middle cross beam is provided with a plurality of mounting grooves, the mounting grooves extend downwards from the top of the movable middle cross beam, and the plurality of mounting grooves are distributed at intervals along the transverse direction;

the plurality of T-shaped longitudinal beams extend longitudinally, the plurality of T-shaped longitudinal beams are matched with the plurality of mounting grooves in a one-to-one correspondence manner, and the T-shaped longitudinal beams are used for separating two adjacent rows of the battery cell groups in the battery pack; and

the transverse pressing plate is detachably arranged on the movable middle cross beam and used for pressing the plurality of T-shaped longitudinal beams.

Optionally, a clamping groove is formed in the bottom of the T-shaped longitudinal beam, and the clamping groove is used for clamping the movable middle cross beam.

Optionally, the battery case further comprises an epoxy plate, and the epoxy plate is attached to two sides of the movable middle cross beam.

Optionally, the battery case further comprises a liquid cooling system component; the bottom wall of the shell is convexly provided with a plurality of longitudinal ribs, the longitudinal ribs extend longitudinally, the longitudinal ribs are distributed at intervals transversely, and each longitudinal rib is provided with the mounting lug; the liquid cooling plate of the liquid cooling system assembly is laid on the bottom wall of the shell and located between two adjacent longitudinal ribs.

Optionally, the battery case further includes a plurality of protection support pieces, a longitudinal raised line is convexly arranged at the middle position of the longitudinal raised rib, the longitudinal raised line extends along the longitudinal direction, and the longitudinal raised lines are distributed on the front side and the rear side of the longitudinal direction of the mounting protruding block; each longitudinal raised line is clamped with the protective support piece, and the protective support piece is used for supporting the corresponding battery cell group.

Optionally, the battery case further comprises a front end plate and a rear end plate, the bottom wall of the case is convexly provided with a front cross beam and a rear cross beam, and the front cross beam and the rear cross beam extend along the transverse direction; the front end plate is detachably mounted on the front cross beam, and the rear end plate is detachably mounted on the rear cross beam; the front end plate is fixedly arranged at the front ends of the T-shaped longitudinal beams, and the rear end plate is fixedly arranged at the rear ends of the T-shaped longitudinal beams; the front end plate and the movable middle cross beam are used for jointly clamping at least one battery pack; the rear end plate and the movable middle cross beam are used for jointly clamping at least one battery pack.

Optionally, the corresponding positions of the front cross beam and the front end plate are protruded forward, so that the number of the battery cells of the battery cell group at the corresponding position is larger than that of the battery cells of the battery cell group at other positions.

Optionally, the front cross member and the front end plate together define a device receiving chamber with the front wall of the housing.

The embodiment of the utility model also provides a battery pack which comprises at least two battery packs and the battery shells, wherein the battery packs are distributed on two opposite sides of the movable middle cross beam.

The embodiment of the utility model also provides a new energy automobile, which comprises the battery pack.

The battery case, the battery pack and the new energy automobile provided by the embodiment of the utility model have the beneficial effects that:

the battery shell is used for assembling at least two battery packs, and each battery pack comprises a plurality of rows of battery core groups, so that a non-module battery pack composition mode is realized. Specifically, the battery shell comprises a shell body, a movable middle cross beam, a transverse pressing plate and a plurality of T-shaped longitudinal beams, wherein a plurality of mounting lugs are convexly arranged on the bottom wall of the shell body, and the plurality of mounting lugs are distributed at intervals along the transverse direction; the bottom of the movable middle cross beam is detachably mounted on the plurality of mounting lugs simultaneously, so that the movable middle cross beam is transversely arranged in the shell, and two opposite sides of the movable middle cross beam are used for respectively mounting at least one battery pack. In this way, the movable center sill can strengthen the rigidity of the entire center. The movable middle cross beam is provided with a plurality of mounting grooves which extend downwards from the top of the movable middle cross beam, and the plurality of mounting grooves are distributed at intervals along the transverse direction; each T-shaped longitudinal beam extends longitudinally, a plurality of T-shaped longitudinal beams are matched with a plurality of mounting grooves in a one-to-one correspondence mode, and the T-shaped longitudinal beams are used for separating two adjacent rows of cell groups in the battery pack. In this way, a separation between the cell groups is achieved. Meanwhile, the transverse pressing plate is detachably arranged on the movable middle cross beam and used for crimping the plurality of T-shaped longitudinal beams. So that the whole can meet the rigidity requirement.

The battery pack includes the battery case, which has the full functions of the battery case.

The new energy automobile comprises the battery pack, and the battery pack has all functions of the battery pack.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is an assembly schematic diagram of a battery pack according to the present embodiment;

FIG. 2 is an exploded view of the battery pack of FIG. 1;

fig. 3 is an assembly schematic view of a battery case provided in the present embodiment;

fig. 4 is an exploded view of the battery case of fig. 3.

Icon: 1000-battery pack; 100-battery case; 10-a housing; 101-a device accommodating chamber; 102-a first battery chamber; 103-a second battery chamber; 11-a bottom wall; 12-front wall; 13-a rear wall; 14-left wall; 15-right wall; 16-longitudinal ribs; 161-mounting bumps; 162-longitudinal ribs; 17-front cross beam; 171-passing through a groove; 18-a rear cross beam; 20-a movable middle cross beam; 21-a mounting groove; 30-T-shaped longitudinal beams; 31-clamping grooves; 40-a transverse pressing plate; 50-epoxy board; 60-a liquid cooling system assembly; 61-liquid cooling plate; 62-liquid cooling pipeline; 70-guard support; 81-a front end plate; 82-a rear end plate; 200-battery pack; 201-a first battery pack; 202-a second battery pack; 210-cell group.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that, if the terms "upper", "lower", "inner", "outer", and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or the azimuth or the positional relationship in which the inventive product is conventionally put in use, it is merely for convenience of describing the present utility model and simplifying the description, and it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus it should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, if any, are used merely for distinguishing between descriptions and not for indicating or implying a relative importance.

It should be noted that the features of the embodiments of the present utility model may be combined with each other without conflict.

As described in the background art, in the power battery industry, a battery pack of a new energy vehicle is a complex integrated system, a single module is assembled from a plurality of battery cells, and then the plurality of modules are assembled into the battery pack. The battery module is assembled by arranging single cells in sequence according to the serial-parallel connection requirement, installing end plates at two ends of the cells, welding side plates at two sides of the cells with the end plates, and wrapping the cells in a cavity to form a module. The complete battery pack needs a plurality of modules, and according to the space condition of the battery pack box body, the battery pack is well discharged at one time, and the electric quantity required by design is achieved after the battery pack is connected in series through soft connection. The mode assembly mode is complex, so that a non-module battery pack assembly mode is derived, a plurality of modules can be integrated into a symmetrical and regular non-module state under the condition of sufficient envelope space, the types of materials are reduced, and the assembly process is simplified. Researchers have found that such non-modular battery packs often suffer from insufficient rigidity.

In view of the above, referring to fig. 1-4, the present embodiment provides a battery case 100, a battery pack 1000 and a new energy automobile, which can effectively improve the above-mentioned technical problems, and can satisfy the overall rigidity requirement.

The new energy automobile comprises an automobile body and a battery pack 1000, wherein the battery pack 1000 is arranged on the automobile body, so that electric energy is provided for the automobile body, and various functions of the automobile body are realized.

Referring to fig. 1, the battery pack 1000 includes a battery case 100 and a battery pack 200, the battery case 100 including a housing 10 and a movable middle beam 20, the battery pack 200 being at least two in number, and being assembled in the battery case 100, specifically, being mounted in the housing 10. In fig. 1, the number of the battery packs 200 is two, namely a first battery pack 201 and a second battery pack 202, and the first battery pack 201 and the second battery pack 202 are distributed in front-rear direction. Each battery pack 200 includes a plurality of rows of battery cells 210, and the plurality of rows of battery cells 210 are distributed in the left-right direction. Each of the battery cell groups 210 includes a plurality of battery cells, and the plurality of battery cells are distributed along the front-rear direction.

Meanwhile, the movable center sill 20 is disposed in the case 10, and battery packs 200 are distributed on opposite sides of the movable center sill 20. In this embodiment, two battery packs 200, i.e., a first battery pack 201 and a second battery pack 202, are disposed on both sides of the movable middle beam 20. Of course, when the length of the housing 10 is long, one battery pack 200 may be disposed on the front side of the movable middle beam 20, and two battery packs 200 may be disposed on the rear side, or two movable middle beams 20 may be disposed in the housing 10, so that three battery packs 200 are disposed at intervals in the housing 10. In other words, "middle" here does not represent a complete intermediate position, and may be any intermediate position as long as it is positioned at the intermediate position, and the plurality of battery packs 200 may be partitioned.

Referring to fig. 1-4, the front, rear, left, right, top, and bottom directions are shown in the drawings, and the relative positional relationship can be clearly known to those skilled in the art when the battery case 100 or the battery pack 1000 is conventionally placed. In the following, the appearance of the longitudinal direction may be understood as the front-rear direction of the battery case 100 or the battery pack 1000, and the transverse direction may be understood as the left-right direction of the battery case 100 or the battery pack 1000.

The battery case 100 will be described in detail with reference to fig. 2 to 4.

The battery case 100 includes a case 10, a movable center cross member 20, a lateral pressure plate 40, and a plurality of T-shaped stringers 30.

The housing 10 includes a bottom wall 11, a front wall 12, a rear wall 13, a left wall 14, and a right wall 15, and the front wall 12, the rear wall 13, the left wall 14, and the right wall 15 are disposed around the bottom wall 11. The bottom wall 11 is provided with a front cross member 17 (described in detail below) protruding upward. The movable center cross member 20 is disposed in the housing 10 in the lateral direction, and both ends thereof are respectively mounted on the left wall 14 and the right wall 15, and the front cross member 17, the movable center cross member 20, and the housing 10 together define a device accommodating chamber 101 (described in detail below), a first battery chamber 102, and a second battery chamber 103, which are sequentially arranged in the front-rear direction, the first battery chamber 102 being used for assembling the first battery pack 201, and the second battery chamber 103 being used for assembling the second battery pack 202. In this embodiment, the housing 10 is understood to be a lower housing or bottom housing, and an upper housing or top housing is generally disposed to be mounted and matched with the lower housing or bottom housing, so as to enclose the battery pack 200 therein.

Meanwhile, the bottom wall 11 of the housing 10 is convexly provided with a plurality of mounting projections 161, and the plurality of mounting projections 161 are distributed at intervals along the transverse direction; the bottom of the movable middle beam 20 is detachably mounted on the plurality of mounting lugs 161 at the same time, so that the movable middle beam 20 is transversely arranged in the shell 10, and the plurality of mounting lugs 161 are arranged, so that the movable middle beam 20 is mounted more stably. Generally, the bottom of the movable middle beam 20 is provided with a plurality of screw holes to correspond to the plurality of mounting bosses 161, and the movable middle beam 20 can be detachably mounted to the plurality of mounting bosses 161 by a plurality of screws. After being mounted in place, at least one battery pack 200 may be mounted on opposite sides of the movable center sill 20, respectively.

Referring to fig. 4, the movable middle beam 20 is provided with a plurality of mounting grooves 21, the mounting grooves 21 extend downwards from the top of the movable middle beam 20, the plurality of mounting grooves 21 are distributed at intervals in the lateral direction, specifically, four mounting grooves 21 are provided in the middle of the movable middle beam 20, and two mounting grooves 21 are provided at both ends thereof. The number of the mounting grooves 21 generally corresponds to the number of the T-shaped stringers 30, specifically, each T-shaped stringer 30 extends in the longitudinal direction, a plurality of T-shaped stringers 30 are fitted with the plurality of mounting grooves 21 in one-to-one correspondence, and the T-shaped stringers 30 are used to separate the adjacent two rows of the cell groups 210 in the battery pack 200. Meanwhile, in order to perform positioning and installation better, in conjunction with fig. 4, the bottom of the T-shaped longitudinal beam 30 is provided with a clamping groove 31, and the clamping groove 31 is used for clamping the movable middle cross beam 20.

Generally, the movable center sill 20 is installed first, the battery packs 200 on both sides of the movable center sill 20 are installed second, then the T-stringers 30 are installed on the movable center sill 20 and the battery packs 200, and finally the lateral clamps 40 are installed, specifically, the lateral clamps 40 are detachably provided on the movable center sill 20 and are used for crimping the plurality of T-stringers 30. The transverse pressing plate 40 can be mounted on the movable middle cross beam 20 through screws, and presses the T-shaped longitudinal beam 30 tightly, so that the whole is stable, and the aim of improving the whole rigidity is fulfilled. Of course, the two ends of the transverse pressing plate 40 may also be fixed to the left wall 14 and the right wall 15 of the housing 10 by screws.

Referring to fig. 2 and 3, in the present embodiment, the battery case 100 further includes a liquid cooling system assembly 60; the bottom wall 11 of the shell 10 is convexly provided with a plurality of longitudinal ribs 16, the longitudinal ribs 16 extend along the longitudinal direction, the longitudinal ribs 16 are distributed at intervals along the transverse direction, and each longitudinal rib 16 is provided with a mounting lug 161; the liquid cooling plate 61 of the liquid cooling system assembly 60 is laid on the bottom wall 11 of the housing 10 and is located between two adjacent longitudinal ribs 16.

The longitudinal ribs 16 not only provide strength to the bottom wall 11, but also provide space for mounting the liquid cooling plate 61, and it will be appreciated that the mounting projections 161 resemble humps providing mounting points for the movable center cross member 20, and the hump gap meets the mounting requirements of the liquid cooling plate 61. In other words, on the bottom wall 11, a longitudinal groove is formed between two adjacent longitudinal ribs 16, and the corresponding liquid cooling plate 61 is laid in the longitudinal groove.

The number of the liquid cooling plates 61 is plural, all the liquid cooling plates 61 are connected by a liquid cooling pipe 62 at the front end position, the liquid cooling pipe 62 includes a liquid inlet pipe and a liquid outlet pipe, and the refrigerant flow in the plurality of liquid cooling plates 61 is realized by one liquid inlet pipe and one liquid outlet pipe.

Referring to fig. 2-4, in this embodiment, the battery case 100 further includes a plurality of protection support members 70, the middle of the longitudinal ribs 16 is provided with a longitudinal protruding strip 162, the longitudinal protruding strip 162 extends longitudinally, and the longitudinal protruding strips 162 are distributed on both front and rear sides of the mounting protruding blocks 161. Each of the longitudinal ribs 162 is clamped with a protection support member 70, and the protection support member 70 is used for supporting the corresponding cell set 210. It will be appreciated that the bottom of any one cell is supported by the guard support 70, which may improve the support.

Of course, in order to facilitate the installation of the battery pack 200, in this embodiment, the battery case 100 further includes a front end plate 81 and a rear end plate 82, and the bottom wall 11 of the case 10 is convexly provided with a front cross member 17 and a rear cross member 18, and both the front cross member 17 and the rear cross member 18 extend in the lateral direction; the front end plate 81 is detachably mounted to the front cross member 17, and the rear end plate 82 is detachably mounted to the rear cross member 18; the front end plate 81 is fixedly arranged at the front ends of the T-shaped longitudinal beams 30, and the rear end plate 82 is fixedly arranged at the rear ends of the T-shaped longitudinal beams 30; the front end plate 81 and the movable center cross member 20 are used to sandwich at least one battery pack 200 together; the rear end plate 82 and the movable center cross member 20 are used to sandwich together at least one battery pack 200.

Specifically, a battery pack 200 is mounted between the front end plate 81 and the movable center sill 20, and a battery pack 200 is mounted between the movable center sill 20 and the rear end plate 82. The two ends of the T-shaped longitudinal beam 30 can be respectively fixed to the front end plate 81 and the rear end plate 82 through screw mounting, so that overall stability is realized.

In a certain scenario, for example, in the case of insufficient envelope space, in order to increase the overall power requirement, the front beam 17 may be designed to be in a nonlinear structure without changing the external contour of the housing 10, for example, in conjunction with fig. 3 and fig. 4, in this embodiment, the corresponding positions of the front beam 17 and the front end plate 81 are protruded forward, so that the number of the cells of the cell group 210 at the corresponding position is greater than the number of the cells of the cell group 210 at other positions.

In other words, the front beam 17 and the front end plate 81 are both in a special-shaped structure, for example, the right end structures corresponding to the front beam 17 and the front end plate 81 are protruded forward, so that the number of the cells of the cell group 210 at the position can be increased by one cell compared with the number of the cells of the cell group 210 at other positions.

Meanwhile, in the present embodiment, the front cross member 17 and the front end plate 81 together define the above-mentioned device accommodating chamber 101 with the front wall 12 of the housing 10. The device accommodating chamber 101 may accommodate a circuit board and various electrical components mounted on the circuit board.

Referring to fig. 2 and 3, the front cross member 17 is provided with a through groove 171 so that the device accommodating chamber 101 and the first battery chamber 102 can be communicated, for example, the liquid cooling pipe 62 of the above-mentioned liquid cooling system assembly 60 can pass through the through groove 171, specifically, one end of the liquid cooling pipe 62 passes through the through groove 171 and communicates with the liquid cooling plate 61, and the other end of the liquid cooling pipe 62 is fixedly mounted on the front wall 12 of the housing 10 and extends to the outside of the housing 10.

In order to meet the requirements of insulation and the like, in the present embodiment, the battery case 100 further includes an epoxy plate 50, and both sides of the movable middle beam 20 are attached with the epoxy plate 50. Meanwhile, the epoxy board 50 is attached to one side of the front and rear end boards 81 and 82, and the epoxy board 50 is also attached between the cells.

The installation process of the battery pack 1000 provided in this embodiment is as follows:

s1: the shell 10 is placed on the tool table, so that the shell 10 can be positioned, and the position stability of the shell is ensured.

S2: the guard support 70 is mounted to the longitudinal ribs 162 of the housing 10.

S3: the liquid cooling system assembly 60 is laid in the housing 10 such that the plurality of liquid cooling plates 61 are laid between the corresponding adjacent two longitudinal ribs 16, respectively, and such that the liquid cooling pipes 62 pass through the through grooves 171 of the front cross member 17.

S4: the movable center sill 20 is mounted to the mounting bosses 161 on the longitudinal ribs 16. For example by means of bolts or screws.

S5: two epoxy plates 50 are respectively adhered to two sides of the movable middle cross beam 20, and the electric cores and the epoxy plates 50 between the electric cores are sequentially arranged.

S6: the rear end plate 82 is mounted to the rear cross member 18. For example by means of bolts or screws.

S7: the plurality of T-stringers 30 are arranged in sequence with their rear ends constrained within the slots of the rear end plate 82. And the T-stringers 30 are fixedly mounted to the rear end plate 82. For example by means of bolts or screws.

S8: the front end plate 81 is mounted to the front cross member 17 and the front ends of the T-stringers 30 are constrained within the slots of the front end plate 81. And the T-shaped side member 30 is fixed to the front end plate 81. For example by means of bolts or screws.

S9: a transverse platen 40 is mounted on top of the movable center sill 20. For example by means of bolts or screws.

Through the operation, the whole rigidity constraint can be realized, and the battery core is placed in the shell 10 in a non-module battery pack composition mode, so that the number of parts is reduced, and the cost is reduced.

In summary, the embodiment of the utility model provides a battery case 100, a battery pack 1000 and a new energy automobile, where the battery case 100 is used for assembling at least two battery packs 200, and each battery pack 200 includes multiple rows of battery cells 210, so as to realize a non-module battery pack assembly mode. Specifically, the battery case 100 includes a case 10, a movable middle cross member 20, a lateral pressure plate 40, and a plurality of T-shaped stringers 30, wherein a bottom wall 11 of the case 10 is convexly provided with a plurality of mounting projections 161, and the plurality of mounting projections 161 are distributed at intervals in a lateral direction; the bottom of the movable center sill 20 is simultaneously detachably mounted to the plurality of mounting bosses 161 such that the movable center sill 20 is laterally disposed within the housing 10, opposite sides of the movable center sill 20 for mounting at least one battery pack 200, respectively. In this way, the movable center sill 20 can strengthen the rigidity of the entire center. The movable middle cross beam 20 is provided with a plurality of mounting grooves 21, the mounting grooves 21 extend downwards from the top of the movable middle cross beam 20, and the plurality of mounting grooves 21 are distributed at intervals along the transverse direction; each T-shaped longitudinal beam 30 extends in the longitudinal direction, and a plurality of T-shaped longitudinal beams 30 are fitted with a plurality of mounting grooves 21 in a one-to-one correspondence, and the T-shaped longitudinal beams 30 are used for separating two adjacent rows of cell groups 210 in the battery pack 200. In this way, a separation between the cell groups 210 is achieved. Meanwhile, a lateral presser plate 40 is detachably provided on the movable center cross member 20, and is used for crimping the plurality of T-shaped side members 30. So that the whole can meet the rigidity requirement.

The battery pack 1000 includes the battery case 100, which has the entire functions of the battery case 100.

The new energy vehicle includes the battery pack 1000, which has all the functions of the battery pack 1000.

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present utility model should be included in the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims (10)

1. Battery case for assembling at least two battery packs (200), each of said battery packs (200) comprising a plurality of rows of cell packs (210), characterized in that said battery case (100) comprises:

the device comprises a shell (10), wherein a bottom wall (11) of the shell (10) is convexly provided with a plurality of mounting lugs (161), and the plurality of mounting lugs (161) are distributed at intervals along the transverse direction;

a movable middle beam (20), wherein the bottom of the movable middle beam (20) is detachably mounted on the plurality of mounting lugs (161) at the same time, so that the movable middle beam (20) is transversely arranged in the shell (10), and two opposite sides of the movable middle beam (20) are used for respectively mounting at least one battery pack (200); the movable middle cross beam (20) is provided with a plurality of mounting grooves (21), the mounting grooves (21) extend downwards from the top of the movable middle cross beam (20), and the plurality of mounting grooves (21) are distributed at intervals along the transverse direction;

a plurality of T-shaped stringers (30), each T-shaped stringer (30) extending in a longitudinal direction, the plurality of T-shaped stringers (30) being fitted with the plurality of mounting grooves (21) in a one-to-one correspondence, the T-shaped stringers (30) being used to separate adjacent two rows of the cell groups (210) in the battery pack (200); and

and the transverse pressing plate (40) is detachably arranged on the movable middle cross beam (20) and is used for pressing and connecting the plurality of T-shaped longitudinal beams (30).

2. Battery case according to claim 1, characterized in that the bottom of the T-shaped longitudinal beam (30) is provided with a clamping groove (31), which clamping groove (31) is used for clamping the movable middle cross beam (20).

3. The battery case according to claim 1, wherein the battery case (100) further comprises an epoxy plate (50), and the epoxy plate (50) is attached to both sides of the movable middle cross member (20).

4. The battery case according to claim 1, wherein the battery case (100) further comprises a liquid cooling system assembly (60); a plurality of longitudinal ribs (16) are convexly arranged on the bottom wall (11) of the shell (10), the longitudinal ribs (16) extend longitudinally, the longitudinal ribs (16) are distributed at intervals in the transverse direction, and each longitudinal rib (16) is provided with the installation convex block (161);

the liquid cooling plate (61) of the liquid cooling system assembly (60) is laid on the bottom wall (11) of the shell (10) and is positioned between two adjacent longitudinal ribs (16).

5. The battery case according to claim 4, wherein the battery case (100) further comprises a plurality of protection supporting members (70), a longitudinal convex strip (162) is convexly arranged at the middle position of the longitudinal convex rib (16), the longitudinal convex strip (162) extends along the longitudinal direction, and the longitudinal convex strip (162) is distributed on the front side and the rear side of the longitudinal direction of the mounting convex block (161);

each longitudinal raised line (162) is clamped with the protective support piece (70), and the protective support piece (70) is used for supporting the corresponding battery cell group (210).

6. The battery case according to any one of claims 1 to 5, wherein the battery case (100) further comprises a front end plate (81) and a rear end plate (82), the bottom wall (11) of the case (10) is provided with a front cross member (17) and a rear cross member (18) protruding, and the front cross member (17) and the rear cross member (18) each extend in the lateral direction; the front end plate (81) is detachably mounted on the front cross beam (17), and the rear end plate (82) is detachably mounted on the rear cross beam (18); the front end plate (81) is fixedly arranged at the front ends of the T-shaped longitudinal beams (30), and the rear end plate (82) is fixedly arranged at the rear ends of the T-shaped longitudinal beams (30); the front end plate (81) and the movable middle cross beam (20) are used for jointly clamping at least one battery pack (200); the rear end plate (82) and the movable center cross member (20) are configured to sandwich at least one of the battery packs (200) together.

7. The battery case according to claim 6, wherein part of the corresponding positions of the front cross member (17) and the front end plate (81) are projected forward so that the number of cells of the cell group (210) at the corresponding position is larger than the number of cells of the cell group (210) at other positions.

8. The battery case according to claim 6, wherein the front cross member (17) and the front end plate (81) together define a device receiving chamber (101) with the front wall (12) of the housing (10).

9. A battery pack, characterized by comprising a battery pack (200) and the battery case (100) according to any one of claims 1 to 8, wherein the number of battery packs (200) is at least two, and the battery packs (200) are distributed on opposite sides of the movable middle cross member (20).

10. A new energy vehicle, characterized by comprising a battery pack (1000) according to claim 9.

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