CN209963128U

CN209963128U - Curb plate, battery module shell, battery module, battery package and vehicle

Info

Publication number: CN209963128U
Application number: CN201921202421.7U
Authority: CN
Inventors: 马东辉; 祁鹏飞
Original assignee: Beijing CHJ Automotive Information Technology Co Ltd
Current assignee: Beijing CHJ Automotive Information Technology Co Ltd
Priority date: 2019-07-26
Filing date: 2019-07-26
Publication date: 2020-01-17
Anticipated expiration: 2029-07-26

Abstract

The utility model provides a curb plate, battery module shell, battery module, battery package and vehicle belongs to vehicle technical field. Wherein, the curb plate includes: the middle layer plate is provided with a hollow part, the outer layer plate is provided with a convex part matched with the hollow part of the middle layer plate, and the convex part of the outer layer plate penetrates through the hollow part of the middle layer plate and is connected with the inner layer plate. The utility model discloses a rigidity of curb plate increases, and the flexible volume reduces for when electric core inflation, the curb plate outwards swells a little, has prevented splitting apart of curb plate from this.

Description

Curb plate, battery module shell, battery module, battery package and vehicle

Technical Field

The utility model relates to the technical field of vehicles, especially, relate to a curb plate, battery module shell, battery module, battery package and vehicle.

Background

The battery pack is the energy storage unit of vehicle, and it comprises a plurality of battery modules, and the battery module includes electric core more than two and is located the battery module shell in the electric core outside, and battery module shell not only can fix electric core, can protect electric core moreover.

Generally, a battery module case includes: curb plate and end plate, curb plate and end plate enclose and establish the framework, and electric core is fixed and the protection in order to fix electric core in the framework, but, curb plate in the battery module shell that has now is a flat board, and electric core is at the produced bulging force of the process of charging or discharging and is acted on the curb plate, when the bulging force that is used for the curb plate is greater than the holding capacity of curb plate, leads to the curb plate to split.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a curb plate, battery module shell, battery module, battery package and vehicle, the main technical problem who solves is: the side plate is cracked due to the expansion of the cell.

In order to achieve the above object, an embodiment of the present invention provides a side plate, which may include: the middle layer plate is provided with a hollow part, the outer layer plate is provided with a convex part matched with the hollow part of the middle layer plate, and the convex part of the outer layer plate penetrates through the hollow part of the middle layer plate and is connected with the inner layer plate.

In one embodiment of the present invention, the outer layer board is attached to the intermediate layer board toward the peripheral side of the convex portion on the side of the intermediate layer board, and the intermediate layer board is attached to the inner layer board toward the surface of the inner layer board.

In one embodiment of the present invention, the outer laminate and the middle laminate are attached by adhesive, the middle laminate and the inner laminate are attached by adhesive, the convex portion of the outer laminate and the inner laminate are connected by adhesive or resistance welding.

In one embodiment of the present invention, a groove is formed in one side of the middle plate facing the inner plate, the depth of the groove is the same as the thickness of the inner plate, and the inner plate is accommodated in the groove.

In an embodiment of the present invention, the hollow portion is formed in a groove portion of the middle layer plate, and the height of the outer layer plate is smaller than that of the middle layer plate, so that the upper portion of the middle layer plate and the lower portion of the middle layer plate are exposed after the outer layer plate and the middle layer plate are connected.

In one embodiment of the present invention, the middle layer plate is an aluminum alloy plate, and the outer layer plate and the inner layer plate are steel plates.

Based on the same inventive concept, the embodiment of the utility model provides a battery module shell, battery module shell can include: frame and bottom plate, the frame includes: the bottom plate is arranged at the bottom of the frame body and defines a containing cavity for containing the battery cell with the frame body; wherein at least one of the first side panel and the second side panel is the side panel described above.

In an embodiment of the present invention, the battery module housing may further include: the upper cover plate covers the top of the frame body, a first flanging and a second flanging which are opposite to each other are respectively extended from two ends of the upper cover plate to the direction of the frame body, the inner side surface of the first flanging is connected with the outer side surface of the first side plate, and the inner side surface of the second flanging is connected with the outer side surface of the second side plate; the two ends of the bottom plate respectively extend towards the frame body to form a third flanging and a fourth flanging which are opposite to each other, the inner side face of the third flanging is connected with the outer side face of the first side plate, and the inner side face of the fourth flanging is connected with the outer side face of the second side plate.

In an embodiment of the present invention, the battery module housing may further include: the partition plate is arranged in the accommodating cavity, one end of the partition plate is connected with the first end plate, and the other end of the partition plate is connected with the second end plate; wherein the partition has a cavity.

In an embodiment of the present invention, the cavity of the partition board is filled with a compressible material.

In an embodiment of the present invention, the battery module housing may further include: locate hold the first insulation apron and the second insulation apron of intracavity, one side of first insulation apron with the medial surface of first end plate is connected, one side of second insulation apron with the medial surface of second end plate is connected.

In an embodiment of the present invention, the battery module housing may further include: the first fixing support and the second fixing support are arranged in the accommodating cavity, one side of the first fixing support and one side of the first insulating cover plate, which are far away from the first end plate, are connected, and one side of the second fixing support and one side of the second insulating cover plate, which are far away from the second end plate, are connected; one side of the first fixing support, which deviates from the first insulating cover plate, is provided with a first clamping portion for clamping one end of the battery cell, and one side of the second fixing support, which deviates from the second insulating cover plate, is provided with a second clamping portion for clamping the other end of the battery cell.

In an embodiment of the present invention, the inner side surface of the second end plate has a channel to the bottom surface of the second end plate, the second fixing bracket has a first through hole and a second through hole respectively formed in the second insulating cover plate, the first through hole, the second through hole and the channel form a first injection channel, and the upper end edge of the second fixing bracket protrudes outward to form a second injection channel.

In an embodiment of the present invention, the first fixing bracket is provided with a steel sheet on an inner side surface protruding outward.

Based on the same inventive concept, the embodiment of the utility model provides a battery module, battery module can include: a plurality of electric cores and as stated in the above battery module shell.

Based on the same inventive concept, the embodiment of the utility model provides a battery pack, the battery can include: a plurality of battery modules as described above.

Based on the same inventive concept, the embodiment of the present invention provides a vehicle, which may include: a battery pack as described in the above.

The embodiment of the utility model provides a curb plate, battery module shell, battery module, battery package and vehicle, wherein, the curb plate includes: the middle layer plate is provided with a hollow part, the outer layer plate is provided with a convex part matched with the hollow part of the middle layer plate, and the convex part of the outer layer plate penetrates through the hollow part of the middle layer plate and is connected with the inner layer plate. The embodiment of the utility model provides an in the rigidity of curb plate increases, and the flexible volume reduces for when electric core inflation, the curb plate outwards swells slightly, has prevented splitting open of curb plate from this.

The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings.

Drawings

Fig. 1 is a schematic diagram of a cell in the prior art;

fig. 2 is another schematic diagram of a cell in the prior art;

fig. 3 is a three-dimensional exploded view of a side plate according to an embodiment of the present invention;

fig. 4 is a schematic view of the assembled first view of fig. 3 according to an embodiment of the present invention;

fig. 5 is a schematic view of the second perspective of fig. 3 after assembly in accordance with an embodiment of the present invention;

FIG. 6 is a cross-sectional view of the interlayer sheet of FIG. 3 taken along line A-B in accordance with an embodiment of the present invention;

fig. 7 is a schematic view of a battery module according to an embodiment of the present invention;

fig. 8 is a first three-dimensional exploded view of a battery module according to an embodiment of the present invention;

fig. 9 is a second three-dimensional exploded view of a battery module according to an embodiment of the present invention;

fig. 10 is a schematic view of the embodiment of the present invention from another angle in fig. 9;

fig. 11 is a fourth three-dimensional exploded view of a battery module according to an embodiment of the present invention;

fig. 12 is a schematic view of another perspective of fig. 11 according to an embodiment of the present invention;

fig. 13 is a third exploded perspective view of a battery module according to an embodiment of the present invention;

fig. 14 is a partial schematic view of a battery module according to an embodiment of the present invention;

fig. 15 is an enlarged schematic view of the area a in fig. 14 according to an embodiment of the present invention;

fig. 16 is a schematic view of a first fixing bracket according to an embodiment of the present invention;

fig. 17 is a cross-sectional view taken along line a-a of fig. 16 in accordance with an embodiment of the present invention;

fig. 18 is an enlarged schematic view of the area B in fig. 16 according to an embodiment of the present invention;

fig. 19 is another schematic view of a first mounting bracket according to an embodiment of the present invention;

FIG. 20 is a schematic view of a connector mounting bracket according to an embodiment of the present invention;

FIG. 21 is another view of the connector mounting bracket according to the embodiment of the present invention;

fig. 22 is a schematic view of a second fixing bracket according to an embodiment of the present invention;

fig. 23 is a schematic view of a second fixing bracket according to an embodiment of the present invention, partially disassembled in three-dimensional manner;

fig. 24 is a schematic view of the second end plate side of the battery module according to the embodiment of the present invention;

fig. 25 is a schematic view of a battery cell accommodated in a battery module housing according to an embodiment of the present invention.

Description of reference numerals:

100-battery module, 110-battery cell, 111-first side face, 112-second side face, 113-third side face, 114-fourth side face, 115-first end face, 116-explosion-proof valve, 120-side plate, 121-middle layer plate, 1211-hollow part, 1212-groove, 122-outer layer plate, 1221-convex part, 123-inner layer plate, 210-first side plate, 220-first end plate, 230-second side plate, 240-second end plate, 250-heat conducting plate, 260-structural adhesive layer, 30-bottom plate, 310-third flanging, 320-fourth flanging, 40-upper cover plate, 410-first flanging, 420-second flanging, 430-lightening hole, 50-partition plate, 610-first insulating cover plate, 620-second insulating cover plate, 710-a first fixing support, 711-a first clamping part, 720-a second fixing support, 721-a first through hole, 722-a steel sheet, 810-a fixing connector fixing support, 820-a collecting wire harness, 830-a serial bus bar, 840-a positive output bus bar, 910-an output nut component and 920-an output nut component.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.

In the case of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Generally, the battery cell is a rectangular parallelepiped, and referring to fig. 1 and fig. 2, the battery cell 110 has a first side 111, a second side 112, a third side 113, a fourth side 114, a first end 115, and a second end (not shown in the drawings), where the first side 111 and the third side 113 are opposite to each other, the second side 112 and the fourth side 114 are opposite to each other, the first end 115 and the second end are opposite to each other, and both the second side 112 and the fourth side 114 have a size larger than an area of the first side 111 or the third side 113.

During the charging or discharging process of the battery cell 110, the battery cell 110 swells, and the swelling is shown in that the battery cell 110 bulges outwards, and especially the second side surface 112 and/or the fourth side surface 114 with larger side surface size is easier to bulge, so that the side plate located outside the second side surface 112 and/or the fourth side surface 114 of the battery cell 110 is pushed by the swelling force of the battery cell 110, and when the bearing force of the side plate is smaller than the swelling force of the battery cell 110, the side plate is cracked.

In order to solve the above technical problem, an embodiment of the present invention provides a side plate 120, as shown in fig. 3 to 6, the side plate 120 may include: the middle layer plate 121, the outer layer plate 122 and the inner layer plate 123 are respectively arranged on two sides of the middle layer plate 121, the middle layer plate 121 is provided with a hollow portion 1211, the outer layer plate 122 is provided with a convex portion 1221 matched with the hollow portion 1211 of the middle layer plate 121, and the convex portion 1221 of the outer layer plate 122 penetrates through the hollow portion 1211 of the middle layer plate 121 and is connected with the inner layer plate 123.

Specifically, the shape of the hollow portion 1211 may be a circle, a square, or another shape, and the shape of the protrusion 1221 may be a circle, a square, or another shape, as long as the protrusion 1221 can pass through the hollow portion 1211, which is not limited in the embodiment of the present invention; the number of the hollow portions 1211 formed on the middle layer plate 121 may be multiple, and the number of the convex portions 1221 of the outer layer plate 122 is equal to or less than the number of the hollow portions 1211, for example, as shown in fig. 3, the number of the hollow portions 1211 is 12, the number of the convex portions 1221 is also 12, and one convex portion 1221 corresponds to one hollow portion 1211, and the side plate 120 in fig. 4 is formed after assembly.

When the side plate 120 is assembled, the convex portion 1221 of the outer layer plate 122 located on one side of the middle layer plate 121 penetrates through the hollow portion 1211 of the middle layer plate 121 and is connected to the inner layer plate 123 located on the other side of the middle layer plate 121, the assembled side plate 120 and the end plate are enclosed to form a frame, the battery cell 110 is accommodated in the frame, and the second side surface 112 and/or the fourth side surface 114 of the battery cell 110 are/is closely attached to the inner side surface of the inner layer plate 123 of the side plate 120. It can be seen that the side panel 120 assembled by the outer panel 122, the middle panel 121, and the inner panel 123 structurally increases the rigidity of the side panel 120, and reduces the amount of deformability of the side panel 120, so that, when the battery cell 110 is expanded, the side panel 120 slightly bulges in a direction away from the battery cell 110, thereby preventing the side panel 120 from being cracked.

In the above embodiment, the outer layer plate 122 is bonded to the intermediate layer plate 121 on the side of the convex 1221 facing the intermediate layer plate 121, and the surface of the intermediate layer plate 121 facing the inner layer plate 123 is bonded to the inner layer plate 123.

Specifically, the peripheral side of the convex 1221 of the outer layer plate 122 facing the middle layer plate 121 is attached to the middle layer plate 121, in other words, the region of the outer layer plate 122 facing the middle layer plate 121 except for the convex 1221 is attached to the middle layer plate 121, so that the structures of the outer layer plate 122 and the middle layer plate 121 are more compact, the rigidity of the side plate 120 is further increased, and the deformable amount of the side plate 120 is reduced, for example, as shown in fig. 3, the outer layer plate 122 is provided with a plurality of strip-shaped convex 1221 from top to bottom, and the height of the strip-shaped convex 1221 is the same as the height of the outer layer plate 122, so that the peripheral side of the convex 1221 of the outer layer plate 122 facing the middle layer plate 121 is attached to the middle layer plate 121, that is, a portion between two adjacent convex 1221 and facing the middle layer plate 121; the surface of the middle layer plate 121 facing the inner layer plate 123 is attached to the inner layer plate 123, so that the structures of the middle layer plate 121 and the inner layer plate 123 are more compact, the rigidity of the side plate 120 is further increased, and the deformable amount of the side plate 120 is reduced.

In specific implementation, the outer layer plate 122 and the middle layer plate 121 are jointed by welding, the middle layer plate 121 and the inner layer plate 123 are jointed by welding, and the convex part 1221 of the outer layer plate 122 is welded to the inner layer plate 123; or the outer layer plate 122 and the middle layer plate 121 are bonded through the viscose, the middle layer plate 121 and the inner layer plate 123 are bonded through the viscose, and the convex part 1221 of the outer layer plate 122 and the inner layer plate 123 are connected through resistance welding; or, the outer layer plate 122 and the middle layer plate 121 are attached by an adhesive, the middle layer plate 121 and the inner layer plate 123 are attached by an adhesive, and the convex portion 1221 of the outer layer plate 122 and the inner layer plate 123 are connected by an adhesive.

The mode of gluing is adopted, so that the structure of the side plate 120 is more compact, the rigidity of the side plate 120 is further increased, and the deformable quantity of the side plate 120 is reduced, so that the side plate 120 is prevented from cracking, and the mode of gluing is preferably adopted.

In an embodiment of the present invention, referring to fig. 5 and 6, a groove 1212 is formed on one side of the middle plate 121 facing the inner plate 123, the depth of the groove 1212 is the same as the thickness of the inner plate 123, and the inner plate 123 is accommodated in the groove 1212.

Specifically, the thickness of the inner layer board 123 and the depth of the groove 1212 are the same, so that after the inner layer board 123 is received in the groove 1212, the surface of the inner layer board 123 facing away from the middle layer board 121 is flush with the surface of the middle layer board 121 facing away from the outer layer board 122, whereby the rigidity of the side board 120 is further increased, the amount of deformation is further reduced, and thus, the crack of the side board 120 is prevented.

In an embodiment of the present invention, referring to fig. 3 and 4, the hollow 1211 is formed in the groove of the middle plate 121, and the height of the outer plate 122 is smaller than that of the middle plate 121, so that the upper portion of the middle plate 121 and the lower portion of the middle plate 121 are exposed after the outer plate 122 and the middle plate 121 are connected.

Specifically, the height of outer plywood 122 is less than the height of middle plywood 121, therefore, the use of the material of outer plywood 122 has been reduced, the cost of manufacture has been reduced, and the upper portion that middle plywood 121 appears out can be connected with the turn-ups of the upper cover plate of battery module shell, the lower part can be connected with the turn-ups of the bottom plate of battery module shell, when making curb plate 120 bulge to the direction that is kept away from electric core 110 under the effect of the expansion force of electric core 110, the turn-ups of the upper cover plate of battery module shell and the turn-ups of bottom plate give curb plate 120 one respectively to the power that electric core 110 direction is close to, the fracture of curb plate 120 has further been prevented.

In an embodiment of the present invention, referring to fig. 6, the middle portion of the middle plate 121 protrudes toward the direction away from the middle plate 121, i.e. the upper portion of the middle plate 121 and the connection portion of the middle portion are step-shaped, and the connection portion of the middle portion and the lower portion is also step-shaped, when assembling the battery module housing, the upper cover plate is connected to the upper portion, and the bottom plate is connected to the lower portion.

In one embodiment of the present invention, referring to fig. 3, the middle plate 121 is an aluminum alloy plate, and the outer plate 122 and the inner plate 123 are both steel plates.

Specifically, the middle layer plate 121 is an aluminum alloy plate, and the outer layer plate 122 and the inner layer plate 123 are both steel plates, which further increases the rigidity of the side plate 120 from the material and reduces the deformable amount of the side plate 120, so that the side plate 120 protects the battery cell 110 and prevents the side plate 120 from cracking.

Based on the same inventive concept, embodiments of the present invention provide a battery module housing, as shown in fig. 7 and 8, the battery module housing may include: frame and bottom plate 30, the frame includes: the battery cell frame comprises a first side plate 210, a first end plate 220, a second side plate 230 and a second end plate 240 which are sequentially connected end to end, wherein a bottom plate 30 is arranged at the bottom of the frame body and defines an accommodating cavity for accommodating the battery cell 110 with the frame body; at least one of the first side plate 210 and the second side plate 230 is the side plate 120.

Specifically, the frame body in the above includes: the frame body is a circumferentially closed structure, and the top and the bottom of the frame body are both open structures; the bottom plate 30 is arranged at the bottom of the frame body and defines an accommodating cavity for accommodating the battery cell 110 with the frame body, that is, the bottom plate 30 seals the bottom opening of the frame body, so that the frame body and the bottom plate 30 form a battery module housing with a concave part, and the concave part is the accommodating cavity for accommodating the battery cell 110; at least one of the first side plate 210 and the second side plate 230 is the side plate 120, in other words, the first side plate 210 is the side plate 120, or the second side plate 230 is the side plate 120, or both the first side plate 210 and the second side plate 230 are the side plate 120, which will be specifically described below by way of two examples.

In an example, the first side plate 210 is the side plate 120, when the electric core 110 located in the accommodating cavity expands, an expansion force of the electric core 110 toward the first side plate 210 acts on the first side plate 210, so that the first side plate 210 slightly bulges in a direction away from the electric core 110, thereby preventing the first side plate 210 from cracking.

In the second example, the first side plate 210 and the second side plate 230 are both the side plates 120, so when the electric core 110 located in the accommodating cavity is expanded, the expansion force of the electric core 110 toward the first side plate 210 acts on the first side plate 210, and the expansion force of the electric core 110 toward the second side plate 230 acts on the second side plate 230, so that the first side plate 210 slightly bulges in a direction away from the electric core 110, and the second side plate 230 also slightly bulges in a direction away from the electric core 110, thereby preventing the first side plate 210 and the second side plate 230 from cracking.

It can be understood that, firstly, in order to reduce the weight of the battery module housing, the battery module housing is provided with first lightening holes (not shown), such as: the first side plate 210 is provided with a first lightening hole, and/or the first end plate 220 is provided with a first lightening hole, and/or the bottom plate 30 is provided with a first lightening hole, etc.; secondly, in order to accelerate the heat dissipation of electric core 110, as shown in fig. 8, the battery module housing further includes: the heat-conducting plate 250, the heat-conducting plate 250 can be provided to the inner wall of the battery module case, such as: the heat conducting plate 250 is disposed on a surface of the first side plate 210 facing the accommodating cavity and/or on a surface of the bottom plate 30 facing the accommodating cavity, wherein the heat conducting plate 250 may be a heat conducting glue or another plate-shaped structure made of a heat conducting material.

In an embodiment of the present invention, referring to fig. 7 and 8, the battery module housing may further include: the upper cover plate 40 is covered on the top of the frame body, a first flanging 410 and a second flanging 420 which are opposite to each other are respectively extended from two ends of the upper cover plate 40 to the direction of the frame body, the inner side surface of the first flanging 410 is connected with the outer side surface of the first side plate 210, and the inner side surface of the second flanging 420 is connected with the outer side surface of the second side plate 230; the two ends of the bottom plate 30 extend toward the frame body to form a third flange 310 and a fourth flange 320 opposite to each other, the inner side of the third flange 310 is connected to the outer side of the first side plate 210, and the inner side of the fourth flange 320 is connected to the outer side of the second side plate 230.

Specifically, the first flange 410 and the second flange 420, which are opposite to each other, are respectively extended from both ends of the upper cover plate 40 toward the frame, so that the upper cover plate 40 is U-shaped, and the third flange 310 and the fourth flange 320, which are opposite to each other, are respectively extended from both ends of the bottom plate 30 toward the frame, so that the bottom plate 30 is also U-shaped, thereby stabilizing the structure of the battery module case and further preventing the first side plate 210 and the second side plate 230 from being cracked.

First, in order to further reduce the weight of the battery module housing, as shown in fig. 7 and 8, a second lightening hole 430 may be formed in the upper cover plate 40; secondly, in order to make the connection effect between the upper cover plate 40 and the battery cell 110 better, referring to fig. 8, a structural adhesive layer 260 is arranged on the surface of the upper cover plate 40 facing the accommodating cavity; third, the first flange 410 and the third flange 310 may be welded to the first side plate 210, and the second flange 420 and the fourth flange 320 may be welded to the second side plate 230.

In a specific embodiment, referring to fig. 7 and 8, the first side plate 210 and the second side plate 230 are both side plates 120, and the upper portion and the lower portion of the middle layer plate 121 of the first side plate 210 are exposed, the upper portion and the lower portion of the middle layer plate 121 of the second side plate 230 are exposed, and the upper cover plate 40 and the bottom plate 30 are both U-shaped structures having flanges, when assembled, the exposed upper portion of the first side plate 210 is connected to the inner side of the first flange 410 of the upper cover plate 40, the exposed lower portion is connected to the inner side of the third flange 310 of the bottom plate 30, and the exposed upper portion of the second side plate 230 is connected to the inner side of the second flange 420 of the upper cover plate 40, the exposed lower portion is connected to the inner side of the fourth flange 320 of the bottom plate 30, so that when the battery cell 110 is expanded, the first flange 410 and the third flange 310 connected to the exposed upper portion of the first side plate 210 exert a force approaching the battery cell 110, preventing the first side panel 210 from splitting; meanwhile, the second flange 420 connected to the exposed upper portion of the second side plate 230 and the fourth flange 320 connected to the lower portion of the second side plate 230 give a force to the second side plate 230 approaching the battery cell 110, thereby further preventing the second side plate 230 from being cracked.

In an embodiment of the present invention, referring to fig. 13, the battery module housing may further include: the partition plate 50 is arranged in the accommodating cavity, one end of the partition plate 50 is connected with the first end plate 220, and the other end of the partition plate 50 is connected with the second end plate 240; wherein the partition 50 has a cavity.

Specifically, the number of the middle partition boards 50 may be one or multiple, both sides of each partition board 50 are the battery cells 110, and the number of the battery cells 110 on any side may be one or multiple; the partition plate 50 has a cavity, which may be a through hole formed in the partition plate 50 from the first end plate 220 to the second end plate 240, or a closed cavity formed in the partition plate 50, and the number of the through holes or the closed cavities may be one or more.

For example, referring to fig. 13, 5 partition plates 50 are disposed in the accommodating cavity of the battery module casing, and one battery cell 110 is installed between two adjacent partition plates 50, that is, 4 battery cells 110 are installed in the accommodating cavity of the battery module casing, when one battery cell 110 expands, the expansion force of the battery cell 110 will act on the partition plates 50 on two sides of the battery cell 110 and force the partition plates 50 on two sides to be squeezed, and finally, the partition plates 50 on two sides of the battery cell 110 absorb part of the expansion force, and the unabsorbed part is transmitted to the first side plate 210 and/or the second side plate 230, so that the expansion force acting on the first side plate 210 and/or the second side plate 230 is reduced, and further, the first side plate 210 and/or the second side plate 230 is prevented from being cracked.

In one embodiment of the present invention, the cavity of the baffle 50 is filled with a compressible material.

Specifically, the compressible material filled in the partition plate 50 may be elastic material such as rubber, silica gel, etc., or may be foamed plastic, or may be other materials, as long as the partition plate 50 may be compressed and absorb the expansion force when the electric core 110 expands, which is not specifically limited by the embodiment of the present invention.

In an embodiment of the present invention, referring to fig. 9 to 13, the battery module housing may further include: and a first insulating cover plate 610 and a second insulating cover plate 620 which are arranged in the accommodating cavity, wherein one side of the first insulating cover plate 610 is connected with the inner side surface of the first end plate 220, and one side of the second insulating cover plate 620 is connected with the inner side surface of the second end plate 240.

Specifically, the first insulating cover 610 separates one end of the battery cell 110 from the first end plate 220, and the second insulating cover 620 separates the other end of the battery cell 110 from the second end plate 240, thereby preventing the first end plate 220 and the second end plate 240 from being charged, and improving the safety of the battery module case.

In an embodiment of the present invention, referring to fig. 11 to 15, the battery module housing may further include: the first fixing bracket 710 and the second fixing bracket 720 are arranged in the accommodating cavity, the first fixing bracket 710 is connected with one side of the first insulating cover plate 610, which is far away from the first end plate 220, and the second fixing bracket 720 is connected with one side of the second insulating cover plate 620, which is far away from the second end plate 240; a first engaging portion 711 for engaging one end of the battery cell 110 is disposed on a side of the first fixing bracket 710 away from the first insulating cover plate 610, and a second engaging portion (not shown) for engaging the other end of the battery cell 110 is disposed on a side of the second fixing bracket 720 away from the second insulating cover plate 620.

Specifically, the first engaging portion 711 of the first fixing bracket 710 is configured to engage with one end of the battery cell 110, and for example, as shown in fig. 14 and 15, a card slot 111 that engages with the first engaging portion 711 is provided on the battery cell 110, so that when the first engaging portion 711 is engaged with the card slot 111, the first fixing bracket 710 is connected with the battery cell 110, and similarly, the second engaging portion of the second fixing bracket 720 is engaged with the other end of the battery cell 110, so that both ends of the battery cell 110 can be fixed.

Further, the first fixing bracket 710 is connected to the first insulating cover plate 610 by a connector such as a snap, and the second fixing bracket 720 is connected to the second insulating cover plate 620 by a connector such as a snap, so that the connection effect between the first fixing bracket 710 and the first insulating cover plate 610, and between the second fixing bracket 720 and the second insulating cover plate 620 is better.

In specific implementation, as shown in fig. 11-13 and 16-21, a side of the first fixing bracket 710 facing the first insulating cover 610 may be provided with a structure capable of fixing the connector fixing bracket 810, the collecting harness 820 and the serial bus bar 830, and as shown in fig. 11-13, 22 and 23, a side of the second fixing bracket 720 facing the second insulating cover 620 may be provided with a structure capable of fixing the positive output bus bar 840.

In an embodiment of the present invention, referring to fig. 11-13 and fig. 22-24, a channel (not shown) is formed from the inner side surface of the second end plate 240 to the bottom surface of the second end plate 240, and the second fixing bracket 720 and the second insulating cover plate 620 have a first through hole 721 and a second through hole (not shown), respectively, the first through hole 721, the second through hole and the channel form a first injection channel, and the upper end edge of the second fixing bracket 720 protrudes outward to form a second injection channel.

Specifically, referring to fig. 1 and fig. 2, the battery cell 110 has an explosion-proof valve 116, and when the battery cell 110 is overcharged, the explosion-proof valve 116 opens after the pressure inside the battery cell 110 exceeds a permissible value, and the high-temperature and high-pressure mixture inside the battery cell 110 is ejected from the explosion-proof valve 116 and is ejected from the first ejection channel and/or the second ejection channel.

It should be noted that the number of the first injection channels may be one or more, and the number of the second injection channels may also be one or more, for example, as shown in fig. 25, 4 battery cells 110 are to be installed in a receiving cavity of a battery module housing, each battery cell 110 has one explosion-proof valve 116, and the explosion-proof valves 116 of the first battery cell 110 and the third battery cell 110 are both located above, and the explosion-proof valves 116 of the second battery cell 110 and the fourth battery cell 110 are located below, then, there are two injection channels corresponding to the upper second injection channels, and there are two injection channels corresponding to the lower first injection channels, that is, there are two outward-protruding second injection channels on the upper edge of the second fixing bracket 720, there are first channels and second channels on the second end plate 240, there are two first through holes 721 shown in fig. 22 and 23 opened on the second fixing bracket 720, the second insulating cover 620 has two second through holes, the first channel connects one first through hole 721 and one second through hole, and the second channel connects the other first through hole 721 and the other second through hole, so as to form two first injection channels, of course, the first channel and the second channel of the second end plate 240 may be connected to each other.

Further, due to the high temperature and high pressure of the mixture sprayed from the explosion-proof valve 116, in order to improve safety, as shown in fig. 23, a steel sheet 722 is disposed on the inner side surface of the second fixing bracket 720 protruding outward, so that the mixture of high temperature and high pressure is sprayed from the explosion-proof valve 116 and then sprayed on the steel sheet 722.

It is understood that the battery module case may be further provided with an output nut assembly, and as shown in fig. 9 to 13, the first end plate 220 is provided at the outer side thereof with an output nut assembly 910, and the second end plate 240 is also provided at the outer side thereof with an output nut assembly 920.

Based on the same inventive concept, the embodiment of the present invention provides a battery module 100, where the battery module 100 includes: a plurality of battery cells 110 and a battery module housing as described above.

It should be noted that the embodiment of the present invention provides a battery module housing in a battery module, which is similar to the description of the embodiment of the battery module housing in the foregoing, and has similar advantageous effects to the embodiment of the battery module housing in the foregoing. For the technical details not disclosed in the embodiment of the battery module of the present invention, please refer to the description of the embodiment of the battery module housing of the present invention for understanding, which will not be described herein again.

Based on the same inventive concept, the utility model provides a battery pack, this battery pack includes: a plurality of battery modules 100 as described above.

It should be noted that the battery module in the battery pack provided by the embodiment of the present invention is similar to the description of the battery module embodiment in the above, and has similar beneficial effects to the battery module embodiment in the above. For the technical details not disclosed in the embodiment of the battery pack of the present invention, please refer to the description of the embodiment of the battery module of the present invention for understanding, which will not be described herein again.

Based on the same inventive concept, the utility model provides a vehicle, this vehicle includes: such as the battery pack described above.

It should be noted that the embodiment of the present invention provides a battery pack in a vehicle, which is similar to the description of the embodiment of the battery pack in the foregoing, and has similar beneficial effects to the embodiment of the battery pack in the foregoing. For the technical details not disclosed in the embodiment of the present invention, please refer to the description of the embodiment of the battery pack of the present invention for understanding, and the description thereof is omitted here.

In the description of the present invention, it is to be understood that the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.

In addition, in the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In addition, in the present invention, unless otherwise explicitly specified or limited, the terms "connected", and the like are to be construed broadly, and may be, for example, a mechanical connection or an electrical connection; the term "connected" refers to a direct connection or an indirect connection through an intermediate medium, and refers to a connection between two elements or an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the terms in the present invention is understood by those skilled in the art according to specific situations.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. A side panel, comprising:

the middle layer plate is provided with a hollow part, the outer layer plate is provided with a convex part matched with the hollow part of the middle layer plate, and the convex part of the outer layer plate penetrates through the hollow part of the middle layer plate and is connected with the inner layer plate.

2. The side panel of claim 1,

the outer plywood orientation intermediate layer board one side the week side of convex part laminate in the intermediate layer board, just the intermediate layer board orientation the surface of inner plate laminate in the inner plate.

3. The side panel of claim 2,

the outer plywood with the intermediate layer board passes through the viscose laminating, the intermediate layer board with the inner plating passes through the viscose laminating, the convex part of outer plywood with the inner plating passes through viscose or resistance welding and connects.

4. The side panel according to any one of claims 1 to 3,

one side of the middle layer plate facing the inner layer plate is provided with a groove, the depth of the groove is the same as the thickness of the inner layer plate, and the inner layer plate is accommodated in the groove.

5. The side panel of claim 4,

the hollow part is arranged at the groove part of the middle layer plate, the height of the outer layer plate is smaller than that of the middle layer plate, and therefore after the outer layer plate and the middle layer plate are connected, the upper part of the middle layer plate and the lower part of the middle layer plate are exposed.

6. The side panel according to any one of claims 1 to 3,

the middle layer plate is an aluminum alloy plate, and the outer layer plate and the inner layer plate are both steel plates.

7. A battery module housing, comprising:

a frame body, comprising: the first side plate, the first end plate, the second side plate and the second end plate are sequentially connected end to end;

the bottom plate is arranged at the bottom of the frame body and defines an accommodating cavity for accommodating the battery cell with the frame body;

wherein at least one of the first side panel and the second side panel is the side panel of any one of claims 1-6.

8. The battery module housing of claim 7, further comprising:

the upper cover plate covers the top of the frame body, a first flanging and a second flanging which are opposite to each other are respectively extended from two ends of the upper cover plate to the direction of the frame body, the inner side surface of the first flanging is connected with the outer side surface of the first side plate, and the inner side surface of the second flanging is connected with the outer side surface of the second side plate;

the two ends of the bottom plate respectively extend towards the frame body to form a third flanging and a fourth flanging which are opposite to each other, the inner side face of the third flanging is connected with the outer side face of the first side plate, and the inner side face of the fourth flanging is connected with the outer side face of the second side plate.

9. The battery module housing according to claim 7 or 8, further comprising:

the partition plate is arranged in the accommodating cavity, one end of the partition plate is connected with the first end plate, and the other end of the partition plate is connected with the second end plate;

wherein the partition has a cavity.

10. The battery module housing of claim 9,

the cavity of the separator is filled with a compressible material.

11. The battery module housing according to claim 7 or 8, further comprising:

locate hold the first insulation apron and the second insulation apron of intracavity, one side of first insulation apron with the medial surface of first end plate is connected, one side of second insulation apron with the medial surface of second end plate is connected.

12. The battery module housing of claim 11, further comprising:

the first fixing support and the second fixing support are arranged in the accommodating cavity, one side of the first fixing support and one side of the first insulating cover plate, which are far away from the first end plate, are connected, and one side of the second fixing support and one side of the second insulating cover plate, which are far away from the second end plate, are connected;

one side of the first fixing support, which deviates from the first insulating cover plate, is provided with a first clamping portion for clamping one end of the battery cell, and one side of the second fixing support, which deviates from the second insulating cover plate, is provided with a second clamping portion for clamping the other end of the battery cell.

13. The battery module housing of claim 12,

the inner side surface of the second end plate is provided with a channel to the bottom surface of the second end plate, the second fixing support and the second insulating cover plate are provided with a first through hole and a second through hole respectively, the first through hole, the second through hole and the channel form a first injection channel, and the edge of the upper end of the second fixing support protrudes outwards to form a second injection channel.

14. The battery module housing of claim 13,

the steel sheet is arranged on the surface of the inner side of the outward bulge of the first fixing support.

15. A battery module, comprising:

a plurality of cells and the battery module housing of any of claims 7-14.

16. A battery pack, comprising:

a plurality of battery modules according to claim 15.

17. A vehicle, characterized by comprising:

the battery pack according to claim 16.