CN219677474U

CN219677474U - Battery case cover plate assembly and battery device

Info

Publication number: CN219677474U
Application number: CN202320964705.XU
Authority: CN
Inventors: 赵冬
Original assignee: China Innovation Aviation Technology Group Co ltd
Current assignee: China Innovation Aviation Technology Group Co ltd
Priority date: 2023-04-25
Filing date: 2023-04-25
Publication date: 2023-09-12
Anticipated expiration: 2033-04-25

Abstract

The utility model relates to the technical field of batteries and discloses a battery box cover plate assembly and a battery device, wherein the battery box cover plate assembly comprises a cover plate and a hoisting structural member; the cover plate comprises a main body part and a first reinforcing part, the first reinforcing part protrudes out of the main body part, the main body part is divided into a main body area and a hoisting area by the first reinforcing part, and the first reinforcing part is provided with a water outlet so as to communicate the main body area with the hoisting area; the hoisting structural member is arranged in the hoisting area. The battery box cover plate assembly can avoid ponding in the hoisting area, and can prevent ponding from penetrating into the battery box from the hoisting structural part.

Description

Battery case cover plate assembly and battery device

Technical Field

The disclosure relates to the field of battery technology, and in particular relates to a battery box cover plate assembly and a battery device.

Background

Currently, new energy electric vehicles are increasingly receiving social attention, and have become the development direction of future automobiles. The battery device is an important component in the electric automobile, and the design optimization of the battery device becomes an important item for the development of the electric automobile.

However, the current battery case cover plate assembly is prone to water accumulation, and the water accumulation easily permeates into the battery case from the battery case cover plate assembly.

It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the present disclosure and thus may include information that does not constitute prior art known to those of ordinary skill in the art.

Disclosure of Invention

An object of the present disclosure is to overcome the disadvantage that the above-mentioned related art battery case cover plate assembly is prone to water accumulation and water accumulation easily permeates into the battery case from the battery case cover plate assembly, and to provide a battery case cover plate assembly and a battery device including the same that do not generate water accumulation.

According to one aspect of the present disclosure, there is provided a battery compartment cover assembly comprising:

the cover plate comprises a main body part and a first reinforcing part, wherein the first reinforcing part protrudes out of the main body part and divides the main body part into a main body area and a lifting area, and the first reinforcing part is provided with a water outlet so as to communicate the main body area with the lifting area;

and the hoisting structural part is arranged in the hoisting area.

The battery case lid board component of this disclosure, on the one hand, through set up first enhancement portion on the apron, can improve the structural strength of apron, prevent that the apron from bending over the problem in-process that uses from appearing to can reduce the battery case and take place the probability of damage when receiving the striking.

On the other hand, because the first reinforcing part is provided with the outlet, the outlet can be communicated with the separated main body area and the hoisting area, so that when water stains exist in the hoisting area, water can enter the main body area through the outlet, and the problem that water stains are accumulated in the hoisting area to cause ponding in the hoisting area can be prevented. Meanwhile, water cannot be accumulated in the hoisting area, so that water cannot permeate into the battery box from the hoisting structural part and the installation gap between the hoisting structural part and the cover plate.

Another aspect of the present disclosure provides a battery device, comprising:

the battery box comprises a bottom plate, side plates and a battery box cover plate assembly, wherein the bottom plate, the side plates and the battery box cover plate assembly enclose an accommodating space, and the battery box cover plate assembly is the battery box cover plate assembly;

and the battery pack is arranged in the accommodating space.

The battery device of this disclosure, on the one hand, through set up first enhancement portion on the apron, can improve the structural strength of apron, prevent that the apron from bending over the problem in the in-process that uses from appearing to can reduce the battery box and take place the probability of damage when receiving the striking.

On the other hand, because the first reinforcing part is provided with the outlet, the outlet can be communicated with the separated main body area and the hoisting area, so that when water stains exist in the hoisting area, water can enter the main body area through the outlet, and the problem that water stains are accumulated in the hoisting area to cause ponding in the hoisting area can be prevented. Meanwhile, water cannot be accumulated in the hoisting area, water cannot permeate into the battery box from the hoisting structural part and the mounting gap between the hoisting structural part and the cover plate, the problem that the battery pack is short-circuited or damaged due to water cannot be caused, and the safety coefficient of the battery device is remarkably improved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure. It will be apparent to those of ordinary skill in the art that the drawings in the following description are merely examples of the disclosure and that other drawings may be derived from them without undue effort.

Fig. 1 is a schematic structural view of an exemplary embodiment of a battery device of the present disclosure.

Fig. 2 is a schematic structural view of an example embodiment of a battery compartment cover assembly of the present disclosure.

Fig. 3 is a partial schematic structure view of an exemplary embodiment of a battery device of the present disclosure.

Reference numerals illustrate:

1. a battery case cover plate assembly; 10. a cover plate; 11. a main body portion; 111. a body region; 112. hoisting areas; 113. a first lifting area; 114. the second hoisting area; 12. a first reinforcing part; 121. a water outlet; 122. a body portion; 123. surrounding the convex part; 124. an opening; 125. an arc part; 126. a straight line portion; 13. a second reinforcing part; 14. a battery box; 15. a bottom plate; 16. a side plate; 17. an accommodation space;

20. hoisting the structural member; 30. a battery pack;

x, a first direction; y, second direction; z, third direction.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus detailed descriptions thereof will be omitted. Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale.

Although relative terms such as "upper" and "lower" are used in this specification to describe the relative relationship of one component of an icon to another component, these terms are used in this specification for convenience only, such as in terms of the orientation of the examples described in the figures. It will be appreciated that if the device of the icon is flipped upside down, the recited "up" component will become the "down" component. When a structure is "on" another structure, it may mean that the structure is integrally formed with the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure through another structure.

The terms "a," "an," "the," "said" and "at least one" are used to indicate the presence of one or more elements/components/etc.; the terms "comprising" and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. in addition to the listed elements/components/etc.; the terms "first," "second," and "third," etc. are used merely as labels, and do not limit the number of their objects.

In the present utility model, unless explicitly specified and limited otherwise, the term "connected" is to be construed broadly, and for example, "connected" may be either fixedly connected, detachably connected, or integrally formed; can be directly connected or indirectly connected through an intermediate medium. "and/or" is merely an association relationship describing an association object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

Referring to fig. 1 to 3, an exemplary embodiment of the present disclosure provides a battery case cover assembly 1, the battery case cover assembly 1 including a cover 10 and a hoist structure 20; the cover plate 10 includes a main body 11 and a first reinforcing portion 12, the first reinforcing portion 12 protrudes from the main body 11, and the first reinforcing portion 12 partitions the main body 11 into a main body region 111 and a hanging region 112, the first reinforcing portion 12 is provided with a drain port 121 to communicate the main body region 111 with the hanging region 112; the lifting structure 20 is disposed in the lifting region 112.

The battery box cover plate assembly 1 disclosed by the disclosure can improve the structural strength of the cover plate 10 by arranging the first reinforcing part 12 on the cover plate 10, prevent the cover plate 10 from bending in the using process, and reduce the damage probability of the cover plate 10 when the battery box 14 is impacted.

On the other hand, since the first reinforcing portion 12 is provided with the water drain 121, the water drain 121 can communicate the partitioned main body region 111 with the hanging region 112, so that when water stains exist in the hanging region 112, water can enter the main body region 111 through the water drain 121, and the problem of water accumulation in the hanging region 112 due to accumulation of water stains in the hanging region 112 can be prevented. Meanwhile, water cannot be accumulated in the lifting area 112, so that water cannot permeate into the battery box 14 from the lifting structural member 20 and the mounting gap between the lifting structural member 20 and the cover plate 10.

In one embodiment of the present disclosure, the body portion 11 and the first reinforcement portion 12 may be a unitary structure. By such arrangement, the connection strength between the main body 11 and the first reinforcing portion 12 can be improved, so that the structural strength of the cover plate 10 can be further improved, the structural strength of the battery case cover plate assembly 1 can be further improved, and the probability of damage to the cover plate 10 and the battery case cover plate assembly 1 can be further reduced.

The structure in which the main body 11 and the first reinforcing portion 12 are integrally formed herein refers to a structure in which the main body 11 and the first reinforcing portion 12 are integrally formed by a pressing process, a sheet metal process, a pressing process, or the like, and are not connected by a connection method such as welding, caulking, or screw connection.

In other embodiments of the present disclosure, the main body 11 and the first reinforcing portion 12 may also be two independent structures, namely: the main body 11 and the first reinforcing portion 12 may be joined and combined by welding, caulking, screw connection, or the like.

In one embodiment, the lifting structure 20 may be mounted on the lifting region 112 of the body portion 11. For example, the lifting region 112 of the body portion 11 may have a mounting hole into which the lifting structure 20 may extend and be connected to a side wall of the mounting hole. However, the hanging portion is not limited thereto, and may be directly installed on the surface of the hanging portion 112.

The lifting structure 20 may be a lifting bolt, which may have a high structural strength and a high connection strength, and may bear a large load, so as to prevent falling or breaking during the lifting of the battery box 14. However, it is within the scope of the present disclosure that the lifting structure 20 may be a ring or other structure, and may be selected and arranged according to actual needs.

In addition, the present disclosure does not limit the protruding height of the first reinforcement 12, and it is also within the scope of the present disclosure that it may be selected and set according to the design thickness of the battery case 14, the load requirement, and the like.

In one embodiment of the present disclosure, referring to fig. 1 and 2, the first reinforcement part 12 may include a body part 122 and a surrounding protrusion 123. Wherein the surrounding convex portion 123 is connected with the body portion 122, and the surrounding convex portion 123 surrounds the hanging area 112. That is, it will be appreciated that the body region 111 and the lifting region 112 of the cover plate 10 are separated by a surrounding protrusion 123, the lifting region 112 being located within the surrounding protrusion 123, and the body region 111 being located outside the surrounding protrusion 123.

An opening 124 may be provided around the protrusion 123, and the opening 124 may be the drain opening 121 described above. The hanging area 112 and the main body area 111 may communicate through the opening 124, and water spots in the hanging portion may be discharged to the surface of the main body area 111 through the opening 124.

In one embodiment, the height of the circumferential protrusion 123 may be the same as the height of the body portion 122. By this arrangement, the structural strength of each position of the first reinforcing portion 12 can be ensured to be the same, and the structural reinforcing effect of the first reinforcing portion 12 on the main body portion 11 can be ensured.

However, the height of the surrounding protrusion 123 may be different from that of the body 122, for example: the height of the surrounding convex portion 123 may be higher than the body portion 122, or the height of the surrounding convex portion 123 may be lower than the body portion 122, and may be set according to actual needs.

In one embodiment, the circumferential protrusion 123 and the body portion 122 may be a unitary structure. By this arrangement, the connection strength between the surrounding convex portion 123 and the main body portion 11 can be improved, so that the structural strength of the first reinforcing portion 12 can be improved, the structural strength of the cover plate 10 can be further improved, the structural strength of the battery case cover plate assembly 1 can be further improved, and the probability of damage to the cover plate 10 and the battery case cover plate assembly 1 can be further reduced.

The structure in which the circumferential protruding portion 123 and the body portion 122 are integrally formed as a single piece herein refers to a structure in which the circumferential protruding portion 123 and the body portion 122 are integrally formed by an extrusion process or a sheet metal or a press process, and are not connected by a connection method such as welding, riveting, or screw connection.

In other embodiments of the present disclosure, the surrounding protrusion 123 and the body portion 122 may also be two separate structures, namely: it is also within the scope of the present disclosure that the circumferential protrusion 123 and the body portion 122 may be joined together by welding, riveting, screwing, or the like.

In another embodiment, the drain opening 121 may not be the opening 124, and the drain opening 121 may be a through hole, or the like, that is: one or more through holes may be provided on the wall surface surrounding the protrusion 123, which may communicate the hanging portion 112 with the body portion 111, and water spots in the hanging portion may be discharged to the surface of the body portion 111 through the opening 124.

In one embodiment, the opening 124 may be located on a side of the circumferential protrusion 123 remote from the body portion 122. Namely: the opening 124 may be disposed opposite the body portion 122. So arranged, the opening 124 may be located a greater distance from the body portion 122. Since the opening 124 may enable the surrounding protrusion 123 to be broken at the opening 124, the structural strength of the surrounding protrusion 123 at the opening 124 is also lower, and the effect of increasing the structural strength of the cover plate 10 is worst, so that the opening 124 is disposed at a position far from the body 122, and the position with the lowest structural strength is located at the edge position of the first reinforcing portion 12, so that the effect of increasing the structural strength of the first reinforcing portion 12 and the structural strength of the cover plate 10 can be ensured.

In one embodiment, the angle between the ends of the opening 124 disposed around the protrusion 123 and the center of the hanging space 112 may be less than 180 degrees. For example: the angles between the ends of the opening 124 provided around the protrusion 123 and the center of the hanging area 112 may be 30 °, 60 °, 90 °, 120 °, 150 °, 180 °, etc. By this arrangement, the structure strength of the surrounding convex portion 123 can be prevented from being affected by the oversized opening 124 while satisfying the drainage requirement.

In one embodiment of the present disclosure, the body portion 122 may extend in the second direction Y, and the hooking region 112 and the surrounding protrusion 123 may be located at the same side of the body portion 122 in the second direction Y. Namely: the surrounding protrusion 123 may be connected to one end of the body portion 122 in the second direction Y, and may surround the hanging area 112 at one end of the body portion 122 in the second direction Y. By the arrangement, the lifting area 112 and the lifting structural member 20 can be arranged at the edge position of the body part 122, so that the influence on the structural strength of the first reinforcing part 12 when the lifting area 112 and the lifting structural member 20 are positioned at the middle position of the body part 122 is avoided.

In one embodiment, as shown with reference to fig. 1 and 2, at least a portion of the circumferential protrusion 123 may be arcuate. Because the bearing capacity of the circular arc structure is strong, the bearing force can be uniformly distributed at each position of the circular arc, so that at least part of the surrounding convex part 123 is arranged in a circular arc shape, the bearing capacity of the surrounding convex part 123 can be improved, and the structural strength of the surrounding convex part 123 can be improved.

The surrounding convex portion 123 may include a circular arc portion 125 and two straight portions 126. The circular arc portion 125 may surround the hanging area 112 and may be connected with the body portion 122, and the opening 124 may be disposed in the circular arc portion 125. Two straight portions 126 may be provided at both ends of the opening 124 corresponding to the circular arc portion 125, and the straight portions 126 may extend in a direction away from the body portion 122.

When the circumferential protrusion 123 is located at one end of the body portion 122 along the second direction Y, the direction in which the straight portion 126 extends may also be the second direction Y.

Since the structural strength of the surrounding convex portion 123 at the opening 124 is low, the present disclosure can increase the structural strength of the surrounding convex portion 123 at the opening 124 by providing two straight portions 126 on the surrounding convex portion 123, avoiding the structural strength from being greatly impaired due to the provision of the opening 124 around the convex portion 123. Further, since the two straight portions 126 are connected to both ends of the opening 124 provided in the circular arc portion 125, the straight portions 126 do not block the opening 124, and the drainage effect of the opening 124 is ensured. That is, the present disclosure can make the surrounding convex portion 123 satisfy the requirement of the structural strength thereof as much as possible while satisfying the drainage requirement by providing the surrounding convex portion 123 as the circular arc portion 125 and the two straight portions 126.

In one embodiment, the first reinforcing portion 12 may divide the lifting area 112 into a first lifting area 113 and a second lifting area 114. Wherein the first and second hanging regions 113 and 114 may be located at both ends of the body portion 122 in the second direction Y, respectively. And, the first hoisting area 113 and the second hoisting area 114 are provided with hoisting structural members 20. By the arrangement, the number of the hoisting structural members 20 in the battery box cover plate assembly 1 can be increased, the problem that the bearing capacity of a single hoisting structural member 20 is overlarge due to the fact that the number of the hoisting structural members 20 is too small is avoided, the situation that the battery box 14 falls off or breaks in the hoisting process of the hoisting structural members 20 is prevented, and the safety risk of hoisting the battery box 14 is reduced.

The first reinforcement part 12 may be provided with two surrounding protrusions 123, and the two surrounding protrusions 123 may surround the hanging space 112, respectively. By the arrangement, the first reinforcing part 12 can be ensured to reinforce the structures of the first hoisting area 113 and the second hoisting area 114, and the first hoisting area 113 and the second hoisting area 114 are prevented from being damaged due to insufficient bearing capacity in the hoisting process of the battery box 14.

In one embodiment of the present disclosure, in one first reinforcement portion 12, the structures of the two surrounding convex portions 123 may be different. For example, one of the surrounding convex portions 123 may be provided with an arc portion 125 and a straight line portion 126 connected to the arc portion 125, and the other surrounding convex portion 123 may be provided with only the arc portion 125.

However, the structure of the two surrounding protrusions 123 may be the same, for example: the two surrounding convex portions 123 may each be provided with an arc portion 125 and a straight portion 126 connected to the arc portion 125, or the two surrounding convex portions 123 may each be provided with only the arc portion 125.

In one embodiment, as shown with reference to fig. 1 and 2, the first reinforcement 12 may be provided in plurality, and the plurality of first reinforcement 12 may be provided at intervals along the third direction Z. The third direction Z may be perpendicular to the second direction Y. By this arrangement, the structural strength of the cover plate 10 can be further improved by increasing the number of the first reinforcing portions 12.

The structure of each first reinforcing portion 12 may not be exactly the same, for example: a part of the first reinforcing structure may be provided with only one surrounding protrusion 123, and another part of the first reinforcing structure may be provided with two surrounding protrusions 123. However, the structures of the plurality of first reinforcing portions 12 may be the same, and may be selected and arranged according to actual needs, which is within the scope of the present disclosure.

In one embodiment of the present disclosure, the hanging region 112 may protrude from the body region 111, and the protruding direction of the hanging region 112 may be the same as the protruding direction of the surrounding protrusion 123, and the protruding height of the hanging region 112 may be smaller than the protruding height of the surrounding protrusion 123. That is, it can be understood that the lifting region 112 has a height between the main body 11 and the surrounding protrusion 123. By increasing the lifting area 112, the structural strength of the lifting area 112 can be improved, and the height of the lifting structural member 20 can be improved, so that the lifting structural member 20 is convenient to connect with lifting equipment.

In one embodiment, the raised height of the lifting area 112 may decrease gradually along a first direction X, which may be a direction in which the body portion 122 points toward the opening 124. When the hanging space 112 is located at one end of the body portion 122 along the second direction Y, the first direction X may be the same as the second direction Y.

By setting the height of the protrusion of the lifting area 112 to be gradually reduced in the first direction X, it is possible to allow water located in the lifting area 112 to flow more thoroughly and more rapidly to the opening 124 and to be discharged to the surface of the body area 111 through the opening 124. This can further avoid the problem of water accumulation in the lifting area 112, and can further prevent water accumulation from penetrating into the battery box 14 from the lifting structural member 20.

It should be noted that, the protruding height of the lifting area 112 is not particularly limited in the present disclosure, so long as the lifting area 112 is located between the main body area 111 and the surrounding protrusion 123, and may be selected and set according to actual needs.

In another embodiment, the surface of the lifting region 112 may also be flush with the surface of the body region 111, i.e. the lifting region 112 has the same height as the body region 111. By the arrangement, the manufacturing difficulty of the cover plate 10 can be simplified, and the manufacturing efficiency of the cover plate 10 can be improved.

In one embodiment of the present disclosure, the cover plate 10 assembly may further include a second reinforcement 13. The second reinforcement 13 may extend in the second direction Y, and may be disposed at intervals from the first reinforcement 12 in the third direction Z. Since the second reinforcement 13 does not surround the lifting area 112 and the lifting structure 20, the second reinforcement 13 may have a higher structural strength. By arranging the second reinforcing part 13 and the first reinforcing part 12 at intervals, the defect that the structural strength of the first reinforcing part 12 is slightly poor can be overcome, and the cover plate 10 is further ensured to have higher structural strength.

Based on the same inventive concept, the exemplary embodiments of the present disclosure provide a battery device, which may include a battery case 14 and a battery pack 30, as shown in fig. 1 to 3. The battery box 14 may include a bottom plate 15, side plates 16, and a battery box cover assembly 1, among others. The bottom plate 15, the side plates 16 and the battery case cover assembly 1 may enclose an accommodating space 17. The battery case lid assembly 1 may be the battery case lid assembly 1 described in the above embodiment. The battery pack 30 may be disposed in the receiving space 17.

In the battery device of the present disclosure, on the one hand, by providing the first reinforcement portion 12 on the cover plate 10, the structural strength of the cover plate 10 can be improved, the problem of bending of the cover plate 10 during use can be prevented, and the probability of damage to the cover plate 10 when the battery case 14 is impacted can be reduced.

On the other hand, since the first reinforcing portion 12 is provided with the water drain 121, the water drain 121 can communicate the partitioned main body region 111 with the hanging region 112, so that when water stains exist in the hanging region 112, water can enter the main body region 111 through the water drain 121, and the problem of water accumulation in the hanging region 112 due to accumulation of water stains in the hanging region 112 can be prevented. Meanwhile, because water cannot accumulate in the lifting area 112, water cannot permeate into the battery box 14 from the lifting structural member 20 and the mounting gap between the lifting structural member 20 and the cover plate 10, and the problem that the battery pack 30 is short-circuited or damaged due to water cannot be caused, and the safety coefficient of the battery device is remarkably improved.

It should be noted that, since the battery case cover assembly 1 in the present embodiment is the battery case cover assembly 1 described in the previous embodiment. In the above embodiment, the specific structure of the battery case cover assembly 1 has been described in detail, and thus, a detailed description thereof will be omitted.

In one embodiment of the present disclosure, referring to fig. 1 and 3, the battery case 14 may include a bottom plate 15 and four side plates 16, the bottom plate 15 may be configured as a rectangle, four side plates 16 are disposed around the bottom plate 15, and the four side plates 16 are connected end to form a rectangular ring.

Of course, in other example embodiments of the present disclosure, the bottom plate 15 may be provided in a circular shape, an oval shape, a trapezoid shape, a hexagon shape, etc., and the side plates 16 may be provided in one or more and surround to form a circular shape, an oval shape, a trapezoid shape, a hexagon shape, etc., such that the battery case 14 is formed in a cylindrical shape, an oval cylindrical shape, a prismatic shape, etc. The battery case 14 may have other shapes, and is not described in detail herein.

In one embodiment, the battery compartment cover assembly 1 may be located on the other side of the four side plates 16, with the battery compartment cover assembly 1 disposed opposite the bottom plate 15. The bottom plate 15, the four side plates 16 and the cover plate 10 the battery case lid plate assembly 1 surround to form a receiving space 17. The cover 10 in the battery case cover assembly 1 may be provided in a rectangular shape, but is not limited thereto, and the cover 10 may be provided in a circular shape, an elliptical shape, a trapezoidal shape, a hexagonal shape, etc., and may be selected and provided according to actual needs.

In this embodiment, the battery pack 30 may include a plurality of unit cells, which may be rectangular or cylindrical, and may be selected and set according to actual needs.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any adaptations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

Claims

1. A battery compartment cover assembly, comprising:

a cover plate (10) comprising a main body portion (11) and a first reinforcing portion (12), the first reinforcing portion (12) protruding from the main body portion (11), and the first reinforcing portion (12) dividing the main body portion (11) into a main body region (111) and a hanging region (112), the first reinforcing portion (12) being provided with a drain opening (121) to communicate the main body region (111) with the hanging region (112);

and the hoisting structural part (20) is arranged in the hoisting area (112).

2. The battery compartment cover assembly of claim 1, wherein the first reinforcement portion (12) comprises:

the body part (122) and encircle protruding portion (123), encircle protruding portion (123) with body part (122) are connected and encircle hoist and mount district (112), encircle protruding portion (123) and be provided with opening (124), opening (124) are outlet (121).

3. The battery compartment cover assembly of claim 2, wherein the opening (124) is located on a side of the surrounding boss (123) remote from the body portion (122).

4. The battery compartment cover assembly of claim 2, wherein the circumferential protrusion (123) provides an angle between the ends of the opening (124) and the center of the lifting area (112) of less than 180 degrees.

5. The battery case cover plate assembly according to any one of claims 2 to 4, wherein the hanging region (112) protrudes from the main body region (111), and the protruding direction of the hanging region (112) is the same as the protruding direction of the surrounding protrusion (123), and the height of the protruding of the hanging region (112) is smaller than the protruding height of the surrounding protrusion (123).

6. The battery compartment cover assembly of claim 5, wherein the raised height of the lifting area (112) decreases gradually in a first direction, the first direction being the direction in which the body portion (122) points toward the opening (124).

7. The battery compartment cover assembly of any of claims 1 to 4, wherein a surface of the lifting area (112) is flush with a surface of the main body area (111).

8. The battery case lid panel assembly according to any one of claims 2 to 4, wherein the body portion (122) extends in a second direction, and the hanging region (112) and the surrounding protrusion (123) are located on the same side of the body portion (122) in the second direction.

9. The battery case lid panel assembly of claim 8, wherein at least a portion of the surrounding protrusion (123) is arcuate.

10. The battery compartment cover assembly of claim 9, wherein the surrounding boss (123) comprises:

an arc part (125) surrounding the hoisting area (112) and connected with the body part (122), wherein the opening (124) is arranged on the arc part (125);

two straight line portions (126) are provided at both ends of the opening (124) corresponding to the arc portions (125), and the straight line portions (126) extend in a direction away from the body portion (122).

11. The battery compartment cover assembly of claim 8, wherein the first reinforcement portion (12) separates the lifting region (112) into a first lifting region (113) and a second lifting region (114), the first lifting region (113) and the second lifting region (114) being located at two ends of the body portion (122) in the second direction, respectively, the lifting structure (20) being disposed within each of the first lifting region (113) and the second lifting region (114);

the first reinforcing part (12) is provided with two surrounding convex parts (123), and the two surrounding convex parts (123) respectively surround the first hoisting area (113) and the second hoisting area (114).

12. The battery compartment cover assembly of claim 8, wherein the cover (10) further comprises:

a second reinforcement portion (13), the second reinforcement portion (13) extending in the second direction and being disposed at a spacing from the first reinforcement portion (12) in a third direction;

the third direction is perpendicular to the second direction.

13. A battery device, characterized by comprising:

battery box (14) comprising a bottom plate (15), side plates (16) and a battery box cover plate assembly (1), wherein the bottom plate (15), the side plates (16) and the battery box cover plate assembly (1) enclose an accommodating space (17), and the battery box cover plate assembly (1) is the battery box cover plate assembly (1) according to any one of the claims 1 to 12;

and a battery pack (30) disposed in the accommodation space (17).