CN212907938U - Battery module casing, battery module and vehicle - Google Patents

Abstract

The utility model discloses a battery module casing, battery module and vehicle. The battery module casing includes: the accommodating box is provided with an accommodating groove, and a groove opening of the accommodating groove extends to the outer side surface of the accommodating box; the cover plate covers the notch of the accommodating groove and defines an accommodating cavity which is arranged in a closed mode together with the accommodating box; at least one of the accommodating box and the cover plate is made of carbon fiber or composite carbon fiber. The battery module comprises an electric core and a battery module shell, wherein the electric core is arranged in the accommodating cavity. The vehicle includes a battery module. The application provides a battery module casing, battery module and vehicle on the basis of guaranteeing shell structure intensity, has reduced casing occupation space, has improved module energy density, has reduced the vehicle energy consumption.

Description

Battery module casing, battery module and vehicle

Technical Field

The application relates to the technical field of vehicle parts, especially, relate to a battery module casing, battery module and vehicle.

Background

The battery module arranged on the electric vehicle is used for supplying energy to the electric vehicle and is a core component of the electric vehicle.

Among the prior art, the casing of battery module includes end plate, curb plate and the apron that the welding links to each other, and electric core setting is in the casing. The general design of casing thickness of battery module is great to make the casing guarantee stable in structure under the produced extrusion of the drunkenness of inside electric core and bulging deformation, and prevent that the casing from taking place deformation under the outside extrusion. The inventor finds that the shell has the following defects in the process of realizing the invention and creation: firstly, the thickness of the shell is large, and the occupied space is large, so that the energy density of the module is low, and the energy density of the whole battery pack system cannot be improved; secondly, the weight of the shell is large due to the large thickness of the shell, so that the energy consumption of the electric vehicle is increased, and the improvement of the endurance mileage of the electric vehicle is not facilitated.

Therefore, it is necessary to solve the above-mentioned technical problems.

Disclosure of Invention

The application provides a battery module casing, battery module and vehicle to solve the problem that exists among the prior art, on the basis of guaranteeing shell structure intensity, reduce casing occupation space, improve module energy density, reduce the vehicle energy consumption.

The application provides a battery module casing includes: the accommodating box is provided with an accommodating groove, and a groove opening of the accommodating groove extends to the outer side surface of the accommodating box; the cover plate covers the notch of the accommodating groove and defines an accommodating cavity which is arranged in a closed mode together with the accommodating box; at least one of the accommodating box and the cover plate is made of carbon fiber or composite carbon fiber.

Optionally, the accommodating box is integrally formed.

Optionally, a threaded hole is formed in the cover plate, and the cover plate is fastened with the accommodating box through the threaded hole.

Based on the same inventive concept, the application also provides a battery module, which comprises a battery core and the battery module shell, wherein the battery core is arranged in the accommodating cavity.

Optionally, all seted up on two cell walls that set up on the holding tank relatively and inlayed and establish the mouth, arbitrary it all extends to inlay to establish the mouth the notch of holding tank.

Optionally, a fixing bracket is mounted on the outer side of at least one of the groove walls.

Optionally, the number of the fixed supports is two, the two fixed supports are arranged oppositely, and the embedding port is located between the two fixed supports.

Optionally, be connected with the relative first board and the second of establishing of inlaying that sets up on the apron and inlay and establish the board, first inlay establish the board with the second inlays to establish the board and inlays respectively one-to-one and establishes two inlay and establish the mouth.

Optionally, the first embedding plate and the second embedding plate are respectively embedded in the two embedding openings in a sealing manner in a one-to-one correspondence manner.

Based on the same inventive concept, the application also provides a vehicle comprising the battery module.

The application provides a battery module casing, battery module and vehicle, with the holding box of battery module casing, the apron sets to and is made by carbon fiber or composite carbon fiber, carbon fiber or composite carbon fiber tensile strength are big, can be at attenuate battery module casing thickness, reduce battery module casing occupation space, improve the basis of battery module energy density, make battery module casing keep higher anti extrusion strength to maintain stably under the dual function of inside electric core drunkenness, inflation extrusion and outside extrusion; and carbon fiber, composite carbon fiber's proportion is little, and the weight that holds box, apron and can reduce battery module casing effectively of making realizes lightweight effect, reduces electric vehicle's energy consumption, improves electric vehicle's continuation of the journey mileage.

Drawings

The preferred embodiments of the present application will hereinafter be described in detail to facilitate an understanding of the objects and advantages of the application, with reference to the accompanying drawings, in which:

fig. 1 is an exploded view of a battery module housing according to an alternative embodiment of the present application.

Fig. 2 is an exploded view of a battery module according to an alternative embodiment of the present application.

Description of reference numerals:

1-accommodating box, 10-accommodating groove, 11-fixing bracket, 12-embedding opening;

2-cover plate, 20-first embedded plate, 21-second embedded plate;

and 3-electric core.

Detailed Description

The terms of orientation of up, down, left, right, front, back, top, bottom, and the like as referred to or as may be referred to in this specification are defined with respect to the configuration shown in the drawings, and the terms "inner" and "outer" refer to directions toward and away from the geometric center of a particular component and are relative terms, and thus may be changed accordingly depending on the position and the state of use of the particular component. Therefore, these and other directional terms should not be construed as limiting terms.

As shown in fig. 1, the present application provides a battery module case including an accommodation case 1 and a cover plate 2.

Referring to fig. 1, the accommodating box 1 is provided with an accommodating groove 10, and a notch of the accommodating groove 10 extends to an outer side surface of the accommodating box 1; the cover plate 2 covers the notch of the accommodating groove 10 and defines an accommodating cavity with the accommodating box 1, the accommodating box 1 and the cover plate 2 are provided with at least one carbon fiber or composite carbon fiber. The composite carbon fiber includes a material obtained by compositing carbon fiber with resin, metal, ceramic, or the like. Compare and hold box and metal cover plate in the metal, carbon fiber holds box 1, carbon fiber cover plate 2 and has the advantage that proportion is little, mechanical properties is good. Taking the carbon fiber cover plate 2 as an example, under the same volume and the same thickness, the weight of the carbon fiber cover plate 2 is about 1/4 of the weight of the steel plate, and the compressive strength is about 7-9 times of that of the steel plate.

The application provides a battery module casing, with the containing box 1 of battery module casing, the apron 2 sets to be made by carbon fiber or compound carbon fiber, carbon fiber or compound carbon fiber tensile strength are big, can be at attenuate battery module casing thickness, reduce battery module casing occupation space, improve the basis of battery module energy density, make battery module casing keep higher anti extrusion strength to maintain stably under the dual function of inside electric core drunkenness, inflation extrusion and outside extrusion; and carbon fiber, composite carbon fiber's proportion is little, and the weight that holds box 1, apron 2 and can reduce battery module casing effectively of making realizes lightweight effect, reduces electric vehicle's energy consumption, improves electric vehicle's continuation of the journey mileage.

In addition, compared with a metal containing box and a metal cover plate, the containing box 1 and the cover plate 2 made of carbon fibers or composite carbon fibers have better vibration resistance, insulating property and fire resistance, can prevent the problem of electric leakage of the battery module shell, and increases the safety; and reduce the heat dissipation capacity of battery module in cold environment, play heat retaining effect to electric core 3, prolong electric vehicle's continuation of the journey mileage.

Alternatively, the housing box 1 is integrally formed. The number of accessories can be reduced, the assembly efficiency of the battery module shell is improved, and the integration effect of the battery module shell is improved.

Optionally, a threaded hole is formed in the cover plate 2, and the cover plate 2 is fastened with the accommodating box 1 through a bolt through the threaded hole. The threaded holes which are aligned with the threaded holes in the cover plate 2 can be formed in the accommodating box 1, and the bolts penetrate through the threaded holes to be fixed in the two threaded holes to connect the cover plate 2 and the accommodating box 1, so that the structure is stable and reliable.

As shown in fig. 1 to fig. 2, based on the same inventive concept, the present application further provides a battery module, which includes a battery cell 3 and a battery module casing provided in any of the above embodiments, where the battery cell 3 is disposed in the accommodating cavity.

The application provides a battery module, with the containing box 1 of battery module casing, the apron 2 sets to be made by carbon fiber or compound carbon fiber, carbon fiber or compound carbon fiber tensile strength are big, can be on attenuate battery module casing thickness, reduce battery module casing occupation space, improve the basis of battery module energy density, make battery module casing keep higher anti extrusion strength to maintain stably under the dual function of inside electric core 3 drunkenness, inflation extrusion and outside extrusion; and carbon fiber, composite carbon fiber's proportion is little, and the weight that holds box 1, apron 2 and can reduce battery module casing effectively of making realizes lightweight effect, reduces electric vehicle's energy consumption, improves electric vehicle's continuation of the journey mileage.

Optionally, the two opposite groove walls of the accommodating groove 10 are provided with embedding openings 12, and any embedding opening 12 extends to the groove opening of the accommodating groove 10. As shown in fig. 2, two embedding openings 12 provide a passage and a limiting passage for the cell packaging fixture, which is beneficial for the cell packaging fixture to accurately and stably package the cell 3 in the accommodating box 1.

Optionally, a fixing bracket 11 is mounted on the outer side of at least one groove wall. The fixing bracket 11 in the embodiment of the present application can fix and install a single battery module housing inside a battery pack, so that a plurality of battery module housings are stably arranged and disposed inside the battery pack.

Optionally, the number of the fixing supports 11 is two, the two fixing supports 11 are arranged oppositely, and the embedding opening 12 is located between the two fixing supports 11. In the embodiment of the application, two fixed bolster 11 are located respectively and inlay the both sides of establishing mouthful 12, are favorable to increasing to inlay the structural strength who establishes mouthful 12 department, improve structural stability.

Optionally, the fixing bracket 11 is provided with a threaded hole. The embodiment of the application can ensure that the fixing bracket 11 is fixed on the battery pack through the stud. As shown in fig. 1, the fixing brackets 11 may be divided into two groups, each group includes two fixing brackets 11 disposed oppositely, and the two groups of fixing brackets 11 are respectively disposed on two groove walls in a one-to-one correspondence manner; threaded holes are formed in the four fixing supports 11 along the vertical direction in fig. 1, and the four studs respectively penetrate through the four threaded holes in a one-to-one correspondence mode and then are fastened on the battery pack, so that the technical effect that the battery module is stably installed on the battery pack is achieved. Optionally, the cover plate 2 is connected with a first embedding plate 20 and a second embedding plate 21 which are oppositely arranged, and the first embedding plate 20 and the second embedding plate 21 are respectively embedded in the two embedding openings 12 in a one-to-one correspondence manner. As shown in figure 2, in the process of assembling the cover plate 2 and the accommodating box 1, the first embedded plate 20 and the second embedded plate 21 are respectively embedded into the two embedding openings 12, so that the cover plate 2 can be guided, and the assembling effect of the cover plate 2 and the accommodating box 1 is improved.

Optionally, the first embedding plate 20 and the second embedding plate 21 are respectively embedded in the two embedding openings 12 in a sealing manner in a one-to-one correspondence manner. The first embedded plate 20 and the second embedded plate 21 can also play a role in plugging the two embedded openings 12, so that the sealing effect of the battery module is improved, and impurities such as external dust are prevented from entering the battery module. Specifically, the first board 20 and the second board 21 of establishing of inlaying can pass through size design to reach the first border of establishing the board 20 and inlay the effect of establishing the border of mouthful 12 and closely laminating, the second inlays the border of establishing the board 21 and the border of establishing mouthful 12 and closely laminating of establishing. In addition, the first embedding plate 20 and the second embedding plate 21 can be sealed with the corresponding embedding openings 12 through sealing strips, and the sealing effect of the battery module can be achieved.

Based on the same inventive concept, the application also provides a vehicle, which comprises the battery module provided by any one of the embodiments.

The vehicle that this application provided sets to the containing box 1 of battery module casing, apron 2 to be made by carbon fiber or compound carbon fiber, and carbon fiber or compound carbon fiber tensile strength are big, can be on attenuate battery module casing thickness, reduce battery module casing occupation space, improve the basis of battery module energy density, make battery module casing keep higher anti extrusion strength to maintain stably under the dual function of inside electric core 3 drunkenness, inflation extrusion and outside extrusion; and carbon fiber, composite carbon fiber's proportion is little, and the weight that holds box 1, apron 2 and can reduce battery module casing effectively of making realizes lightweight effect, reduces electric vehicle's energy consumption, improves electric vehicle's continuation of the journey mileage.

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

Claims (10)

1. A battery module housing, comprising:

the accommodating box is provided with an accommodating groove, and a groove opening of the accommodating groove extends to the outer side surface of the accommodating box;

the cover plate covers the notch of the accommodating groove and defines an accommodating cavity which is arranged in a closed mode together with the accommodating box;

at least one of the accommodating box and the cover plate is made of carbon fiber or composite carbon fiber.

2. The battery module housing according to claim 1, wherein the receiving case is integrally formed.

3. The battery module housing according to any one of claims 1 to 2, wherein the cover plate has a threaded hole formed therein, and the cover plate is bolt-fastened to the accommodation box through the threaded hole.

4. A battery module comprising a cell and the battery module housing of any of claims 1-3, the cell being disposed within the receiving cavity.

5. The battery module as set forth in claim 4, wherein the two opposite walls of the receiving groove are provided with embedding openings, and any one of the embedding openings extends to the notch of the receiving groove.

6. The battery module according to claim 5, wherein a fixing bracket is mounted to an outer side of at least one of the groove walls.

7. The battery module according to claim 6, wherein the number of the fixing brackets is two, the two fixing brackets are arranged oppositely, and the embedding opening is located between the two fixing brackets.

8. The battery module as recited in claim 7, wherein the cover plate is connected with a first embedded plate and a second embedded plate which are oppositely disposed, and the first embedded plate and the second embedded plate are embedded in the two embedded openings in a one-to-one correspondence manner.

9. The battery module as recited in claim 8, wherein the first insertion plate and the second insertion plate are respectively inserted into the two insertion openings in a one-to-one manner.

10. A vehicle characterized by comprising the battery module according to any one of claims 4 to 9.

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