CN219759787U - Battery box and battery device - Google Patents

Abstract

The utility model relates to the technical field of batteries and discloses a battery box and a battery device, wherein the battery box comprises a bottom plate, a plurality of side plates, a cover plate, a first sealing structure and a connecting piece; a plurality of side plates are arranged around the bottom plate; the cover plate, the bottom plate and the side plates enclose a closed accommodating space; the first sealing structure is positioned between the bottom plate and at least one side plate and is tightly attached to the bottom plate and the side plate. The connecting piece sequentially passes through the side plate attached to the first sealing structure and the first sealing structure along the first direction so as to connect the side plate attached to the first sealing structure, the first sealing structure and the bottom plate; the first direction is the direction in which the first sealing structure points to the bottom plate. The battery box can meet the waterproof requirement, and can discharge high-pressure gas in the battery box to prevent the explosion of the battery box.

Description

Battery box and battery device

Technical Field

The disclosure relates to the technical field of batteries, and in particular relates to a battery box and a battery device.

Background

At present, in order to meet the waterproof requirement, the battery box adopts a sealed design. However, when high-pressure gas is generated in the sealed battery box, the high-pressure gas is not easy to be discharged, so that the gas pressure in the battery box is gradually increased, and finally the explosion of the battery box is caused.

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

The present disclosure aims to overcome the disadvantage that the high-pressure gas in the battery box of the above-mentioned related art is not easy to be discharged, and provide a battery box capable of discharging the high-pressure gas, and a battery device including the battery box.

According to one aspect of the present disclosure, there is provided a battery box including:

a bottom plate;

a plurality of side plates disposed around the bottom plate;

the cover plate, the bottom plate and the side plates enclose a closed accommodating space;

the first sealing structure is positioned between the bottom plate and at least one side plate and is tightly attached to the bottom plate and the side plate;

the connecting piece sequentially passes through the side plate, the first sealing structure and the bottom plate, which are attached to the first sealing structure, along a first direction so as to connect the side plate, the first sealing structure and the bottom plate, which are attached to the first sealing structure;

the first direction is the direction in which the first sealing structure points to the bottom plate.

The battery box that this disclosure provided, on the one hand, apron encloses into inclosed accommodation space with bottom plate and a plurality of side plates, can prevent accommodation space and the outside intercommunication of battery box, just also can prevent impurity such as the outside steam of battery box from getting into the battery box in, satisfies the waterproof demand of battery box.

On the other hand, this disclosure is through setting up first seal structure between bottom plate and at least one curb plate to utilize the connecting piece to be connected with curb plate, first seal structure and the bottom plate of first seal structure laminating, can utilize first seal to guarantee the connection leakproofness between bottom plate and the curb plate of first seal structure laminating, prevent impurity such as steam from getting into in the battery box between bottom plate and this curb plate. And when the battery box generates high-pressure gas, the high-pressure gas can jack up the connecting piece, so that a gap is formed between the bottom plate and the side plate, and the high-pressure gas can be discharged to the outside of the battery box through the gap, so that the air pressure in the battery box can be reduced, and the problem that explosion occurs due to overhigh air pressure in the battery box is avoided.

According to one aspect of the present disclosure, there is provided a battery device including:

the battery box is the battery box;

at least one battery is arranged in the accommodating space.

The battery device that this disclosure provided, on the one hand, the apron and the bottom plate and a plurality of lateral plates of battery box enclose into inclosed accommodation space, can prevent accommodation space and the outside intercommunication of battery box, just also can prevent impurity such as the outside steam of battery box from getting into the battery box, satisfy battery device's waterproof demand, avoid battery and water contact and take place the short circuit.

On the other hand, this disclosure is through setting up first seal structure between bottom plate and at least one curb plate to utilize the connecting piece to be connected with curb plate, first seal structure and the bottom plate of first seal structure laminating, can utilize first seal to guarantee the connection leakproofness between bottom plate and the curb plate of first seal structure laminating, prevent impurity such as steam from getting into in the battery box between bottom plate and this curb plate. And when the battery generates thermal runaway and generates a large amount of high-pressure gas, the high-pressure gas can jack up the connecting piece, so that a gap is formed between the bottom plate and the side plate, and the high-pressure gas can be discharged to the outside of the battery box through the gap, so that the air pressure in the battery box can be reduced, the problem that the explosion occurs due to the overhigh air pressure in the battery box is avoided, and the safety risk of the battery device in the use process can be reduced.

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 cross-sectional structure of an example embodiment of a battery device of the present disclosure.

Fig. 2 is a schematic cross-sectional structure of another example embodiment of a battery device of the present disclosure.

Fig. 3 is a schematic cross-sectional structure of still another example embodiment of a battery device of the present disclosure.

Fig. 4 is a schematic structural view of a second view of an exemplary embodiment of a battery device of the present disclosure.

Fig. 5 is a schematic cross-sectional structure of still another example embodiment of a battery device of the present disclosure.

Fig. 6 is a schematic cross-sectional structure of another example embodiment of a battery device of the present disclosure.

Reference numerals illustrate:

10. a battery box; 11. a bottom plate; 12. a side plate; 121. a receiving groove; 13. a cover plate; 14. an accommodation space; 15. a first sealing structure; 16. a connecting piece; 17. a second sealing structure;

20. a battery;

x, a first direction; y, second 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.

The present exemplary embodiment provides a battery case 10, as shown with reference to fig. 1 to 6, the battery case 10 includes a bottom plate 11, a plurality of side plates 12, a cover plate 13, a first sealing structure 15, and a connection member 16; a plurality of side plates 12 are disposed around the bottom plate 11; the cover plate 13, the bottom plate 11 and the plurality of side plates 12 enclose a closed accommodating space 14; the first sealing structure 15 is located between the bottom plate 11 and the at least one side plate 12, and is closely adhered to the bottom plate 11 and the side plate 12. The connecting piece 16 sequentially passes through the side plate 12 attached to the first sealing structure 15 and the first sealing structure 15 along the first direction X to connect the side plate 12 attached to the first sealing structure 15, the first sealing structure 15 and the bottom plate 11; the first direction X is the direction in which the first sealing structure 15 is directed towards the bottom plate 11.

According to the battery box 10 provided by the disclosure, on one hand, the cover plate 13, the bottom plate 11 and the plurality of side plates 12 enclose into the closed accommodating space 14, so that the accommodating space 14 can be prevented from being communicated with the outside of the battery box 10, and impurities such as water vapor and the like outside the battery box 10 can be prevented from entering the battery box 10, and the waterproof requirement of the battery box 10 is met.

On the other hand, the present disclosure can ensure the connection sealability between the bottom plate 11 and the side plate 12 attached to the first seal structure 15 by providing the first seal structure 15 between the bottom plate 11 and the at least one side plate 12 and connecting the side plate 12 attached to the first seal structure 15, the first seal structure 15 and the bottom plate 11 by the connecting member 16, thereby preventing the entry of impurities such as moisture from the space between the bottom plate 11 and the side plate 12 into the battery case 10. And when the high-pressure gas is generated in the battery box 10, the high-pressure gas can jack up the connecting piece 16, so that a gap is formed between the bottom plate 11 and the side plate 12, and the high-pressure gas can be discharged to the outside of the battery box 10 through the gap, so that the air pressure in the battery box 10 can be reduced, and the problem that the explosion occurs due to the overhigh air pressure in the battery box 10 is avoided.

In one embodiment of the present disclosure, the battery case 10 may include a bottom plate 11 and four side plates 12, the bottom plate 11 may be provided in a rectangular shape, four side plates 12 are provided around the bottom plate 11, and the four side plates 12 are connected end to form a rectangular loop, so that the battery case 10 is substantially in a cubic structure.

Of course, in other example embodiments of the present disclosure, the bottom plate 11 may be provided in a circular shape, an elliptical shape, a trapezoid shape, a hexagon shape, etc., and the side plates 12 may be provided in other numbers and surround to form a circular shape, an elliptical shape, a trapezoid shape, a hexagon shape, etc., such that the battery case 10 is formed in a cylindrical shape, an elliptical cylindrical shape, a prismatic shape, etc. The battery case 10 may have other shapes, and is not described in detail herein.

In one embodiment, the cover 13 may be located at the other side of the four side plates 12, and the cover 13 may be disposed opposite to the bottom plate 11. The bottom plate 11, the four side plates 12 and the cover plate 13 surround to form a closed accommodating space 14. The cover 13 may be provided in a rectangular shape, but not limited thereto, and the cover 13 may be provided in a circular shape, an elliptical shape, a trapezoidal shape, a hexagonal shape, etc., which may be selected and provided according to actual needs.

In one embodiment, as shown in fig. 1 to 6, the first sealing structure 15 may be located between the bottom plate 11 and one of the side plates 12, but is not limited thereto. When the first sealing structure 15 is located between the bottom plate 11 and one side plate 12, it can be ensured that the high-pressure gas is discharged only from this point, and compared with the scheme that the first sealing structure 15 is located between the bottom plate 11 and a plurality of side plates 12, the scheme can reduce the pressure threshold of the gas discharge, namely: when the bottom plate 11 of the battery case 10 and the plurality of side plates 12 are connected by the connecting members 16, it is necessary to ensure a sufficiently high pressure in the battery case 10 to allow the gas to push the connecting members 16 connected to the plurality of side plates 12 open. This means that there is already a very high pressure in the battery box 10 before the gas in the battery box 10 is vented, which increases the risk of explosion of the battery box 10. In the solution of the present embodiment, only the connecting piece 16 connected to one side plate 12 needs to be lifted, so that high air pressure is not required, and thus the pressure in the battery box 10 is not very high when the air is discharged, which reduces the risk of explosion of the battery box 10.

In one embodiment, when the bottom plate 11 is connected with the side plate 12 except the side plate 12 attached to the first sealing structure 15, a welding or gluing mode can be adopted, so that the air tightness of the battery box 10 can be ensured, and the problem of water leakage of the battery box 10 is avoided.

When the cover plate 13 and each side plate 12 are connected, a welding or gluing mode can be adopted, so that the air tightness of the battery box 10 can be further ensured, and the problem of water leakage of the battery box 10 can be further avoided.

In one embodiment of the present disclosure, referring to fig. 2 to 3 and 5 to 6, a side plate 12 attached to the first sealing structure 15 near the bottom plate 11 may be provided with a receiving groove 121, and at least a portion of the first sealing structure 15 may be located in the receiving groove 121 and closely attached to an inner wall of the receiving groove 121. By the arrangement, impurities such as water vapor can be further prevented from entering the battery box 10 from the junction between the bottom plate 11 and the side plate 12 attached to the first sealing structure 15, and the waterproof performance of the battery box 10 is further improved.

In one embodiment, the first sealing structure 15 may be a separately provided sealing block, which may be located in the receiving groove 121, and which may be closely adhered to the inner wall of the receiving groove 121, and the other side of which may be closely adhered to the bottom plate 11. By providing the first sealing structure 15 alone, the maintenance cost and maintenance efficiency of the battery box 10 can be significantly reduced. Namely: it will be appreciated that when the first sealing structure 15 is damaged to cause the air tightness of the battery case 10 to be failed, only the first sealing structure 15 needs to be replaced separately.

In another embodiment, the first sealing structure 15 and the bottom plate 11 are a unitary structure, i.e.: the first sealing structure 15 and the bottom plate 11 may be integrally formed by a casting process, an extrusion process, a sheet metal process, a stamping process, or the like, instead of being connected by a connection manner such as riveting, screw connection, or the like. So set up, can prevent to have the assembly error when the assembly between first seal structure 15 and the bottom plate 11, and lead to the problem that leaks gas between first seal structure 15 and the bottom plate 11 to can improve the connection leakproofness between first seal structure 15 and the bottom plate 11, further improve the leakproofness of battery box 10, prevent that impurity such as the external steam of battery box 10 from getting into in the battery box 10.

In one embodiment, referring to fig. 3, the inner wall of the receiving groove 121 opposite to the bottom plate 11 may have a first angle α with the side of the bottom plate 11 near the cover plate 13. The side of the first sealing structure 15 facing away from the base plate 11 and the side of the base plate 11 adjacent to the cover plate 13 may have a second angle β. The first included angle α may be greater than 90 ° and less than 180 °, and the first included angle α and the second included angle β are the same. That is, it is understood that the inner walls of the receiving groove 121 opposite to the bottom plate 11 may be inclined surfaces, and the side of the first sealing structure 15 facing away from the bottom plate 11 may be inclined surfaces, and the slopes of the two inclined surfaces are the same.

For example, the first included angle α may include, but is not limited to, 95 °, 120 °, 150 °, 175 °, and the like.

By such arrangement, the holding groove 121 and the first sealing structure 15 can be tightly attached, and the air tightness between the holding groove 121 and the first sealing structure 15 can be ensured. Meanwhile, by setting the fitting part of the battery box to be an inclined plane, the airtight seal between the accommodating groove 121 and the first sealing structure 15 can be further improved, the waterproof capability of the battery box 10 is further improved, and impurities such as water vapor outside the battery box 10 are prevented from entering the battery box 10 through the joint between the accommodating groove 121 and the first sealing structure 15.

In addition, when the first included angle α is greater than 90 ° and less than 180 °, the inclined surface may extend away from the accommodating space 14, and when the gas pressure in the battery case 10 is too high to jack up the side plate 12 and the connecting member 16, the gas may be rapidly discharged from the inclined surface between the accommodating groove 121 and the first sealing structure 15, so that compared with the solution in which the accommodating groove 121 and the first sealing structure 15 are straight surfaces, the gas discharging speed is faster.

In another embodiment, the inner wall of the receiving groove 121 opposite to the bottom plate 11 may have a first angle α with the side of the bottom plate 11 near the cover plate 13. The side of the first sealing structure 15 facing away from the base plate 11 and the side of the base plate 11 adjacent to the cover plate 13 may have a second angle β. The first included angle α may be greater than 0 ° and less than 90 °, and the first included angle α and the second included angle β are the same. That is, it is understood that the inner walls of the receiving groove 121 opposite to the bottom plate 11 may be inclined surfaces, and the side of the first sealing structure 15 facing away from the bottom plate 11 may be inclined surfaces, and the slopes of the two inclined surfaces are the same. In comparison with the previous embodiment, only the extending direction of the inclined surface is different.

For example, the first included angle α may include, but is not limited to, 5 °, 30 °, 60 °, 75 °, 85 °, and the like.

By such arrangement, the close fitting of the accommodating groove 121 and the first sealing structure 15 can be ensured, and the air tightness between the accommodating groove 121 and the first sealing structure 15 can be ensured. Meanwhile, by setting the fitting portion thereof to be the inclined plane of the angle, the airtight seal between the accommodating groove 121 and the first sealing structure 15 can be improved, the waterproof capability of the battery box 10 is improved, and impurities such as water vapor outside the battery box 10 are prevented from entering the battery box 10 through the joint between the accommodating groove 121 and the first sealing structure 15.

In one embodiment, referring to fig. 2 to 6, the receiving groove 121 may extend in the second direction Y, and the length of the first sealing structure 15 in the second direction Y may be the same as the length of the receiving groove 121 in the second direction Y. By doing so, the length of the gap for discharging gas can be increased, and when the side plate 12 and the connecting member 16 are pushed open by the high-pressure gas, the gas discharge speed can be made faster, so that the risk of explosion of the battery box 10 can be further reduced.

The present disclosure does not limit the length of the receiving groove 121 extending in the second direction Y, for example: the accommodating groove 121 may penetrate the side plate 12 in the second direction Y, or the length of the accommodating groove 121 in the second direction Y may be half of the side plate 12, etc., and may be selected and set according to actual needs, which is within the scope of the present disclosure.

In one embodiment, the connection member 16 may be provided in plurality, and the plurality of connection members 16 may be disposed at intervals in the second direction Y. The connecting pieces 16 can improve the connection strength between the side plates 12, the first sealing structure 15 and the bottom plate 11, so that the side plates 12, the first sealing structure 15 and the bottom plate 11 are attached tightly, the problem that gaps appear among the side plates 12, the first sealing structure 15 and the bottom plate 11 due to insufficient connection strength of the connecting pieces 16 is avoided, good air tightness among the side plates 12, the first sealing structure 15 and the bottom plate 11 can be guaranteed, and impurities such as water vapor and the like are prevented from entering the accommodating space 14 of the battery box 10 among the side plates 12, the first sealing structure 15 and the bottom plate 11.

In one embodiment, the connection 16 may be a bolt, screw, stud, or the like. So set up, can have higher joint strength after guaranteeing curb plate 12, first seal structure 15 and bottom plate 11 are connected through this connecting piece 16 to can guarantee when the battery box 10 internal pressure is higher, connecting piece 16 can be pushed away, in order to guarantee that the gas in the battery box 10 can be discharged. However, it is within the scope of the present disclosure that the connector 16 may be other structural members, such as nails, etc., and may be selected and arranged according to the actual needs.

In one embodiment of the present disclosure, referring to fig. 5 and 6, the battery case 10 may further include a second sealing structure 17. The second seal 17 may be located in the receiving cavity, which may be in engagement with the surface of the base plate 11 adjacent the cover plate 13, and the second seal 17 may be in engagement with the side plate 12 in engagement with the first seal 15. By providing the second seal structure 17, it is possible to make a "step" shape with the first seal structure 15, whereby it is possible to further prevent foreign substances such as moisture from entering the battery case 10.

In one embodiment, referring to fig. 6, the front projection of the first sealing structure 15 on the cover plate 13 and the front projection of the second sealing structure 17 on the cover plate 13 may have an overlap. That is, it can be understood that the first seal structure 15 and the second seal structure 17 directly have portions that are fitted to each other as well. Since the sealing effect of the portion where the first sealing structure 15 and the second sealing structure 17 are attached to each other is better, the arrangement can further prevent the entry of impurities such as water vapor into the battery case 10.

In one embodiment, the materials of the first sealing structure 15 and the second sealing structure 17 may be rubber. The rubber has good deformability, so that the first sealing structure 15 and the second sealing structure 17 can be tightly attached to the corresponding side plate 12 and the corresponding bottom plate 11, and the air tightness of the battery box 10 is ensured. Meanwhile, due to the high durability of the rubber, the service lives of the first sealing structure 15 and the second sealing structure 17 can be prolonged, and the number of times of maintenance of the battery case 10 can be reduced.

However, the material of the first seal structure 15 and the second seal structure 17 is not limited to rubber, and may be selected and set according to actual needs.

Based on the same inventive concept, the exemplary embodiments of the present disclosure provide a battery device, which may include a battery case 10 and at least one battery 20, as shown with reference to fig. 1 to 6. The battery case 10 may be the battery case 10 described above. At least one battery 20 may be disposed within the receiving space 14.

According to the battery device provided by the disclosure, on one hand, the cover plate 13 of the battery box 10, the bottom plate 11 and the plurality of side plates 12 enclose into the closed accommodating space 14, so that the accommodating space 14 can be prevented from being communicated with the outside of the battery box 10, impurities such as water vapor outside the battery box 10 can be prevented from entering the battery box 10, the waterproof requirement of the battery device is met, and the battery 20 is prevented from being in contact with water to generate short circuit.

On the other hand, the present disclosure can ensure the connection sealability between the bottom plate 11 and the side plate 12 attached to the first seal structure 15 by providing the first seal structure 15 between the bottom plate 11 and the at least one side plate 12 and connecting the side plate 12 attached to the first seal structure 15, the first seal structure 15 and the bottom plate 11 by the connecting member 16, thereby preventing the entry of impurities such as moisture from the space between the bottom plate 11 and the side plate 12 into the battery case 10. And when the battery 20 generates a large amount of high-pressure gas due to thermal runaway, the high-pressure gas can jack up the connecting piece 16, so that a gap is formed between the bottom plate 11 and the side plate 12, and the high-pressure gas can be discharged to the outside of the battery box 10 through the gap, so that the air pressure in the battery box 10 can be reduced, the problem that the explosion occurs due to the excessively high air pressure in the battery box 10 is avoided, and the safety risk of the battery device in the use process can be reduced.

It should be noted that, the battery device includes other necessary components and compositions besides the battery box 10 and the battery 20, such as a circuit board, a control component, and the like, and those skilled in the art can correspondingly supplement the components and compositions according to the specific use requirements of the battery device, which is not described herein.

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 (10)

1. A battery box, comprising:

a bottom plate (11);

a plurality of side plates (12) disposed around the bottom plate (11);

a cover plate (13) which encloses a closed accommodating space (14) with the bottom plate (11) and the plurality of side plates (12);

a first sealing structure (15) located between the bottom plate (11) and at least one of the side plates (12) and closely attached to the bottom plate (11) and the side plates (12);

a connecting member (16) sequentially passing through the side plate (12) and the first sealing structure (15) attached to the first sealing structure (15) along a first direction so as to connect the side plate (12), the first sealing structure (15) and the bottom plate (11) attached to the first sealing structure (15);

the first direction is the direction in which the first sealing structure (15) points towards the bottom plate (11).

2. The battery box according to claim 1, wherein a containing groove (121) is formed in a surface, close to the bottom plate (11), of the side plate (12) attached to the first sealing structure (15), and at least part of the first sealing structure (15) is located in the containing groove (121) and is tightly attached to the inner wall of the containing groove (121).

3. The battery box according to claim 2, wherein the inner wall of the accommodating groove (121) opposite to the bottom plate (11) has a first included angle with the surface of the bottom plate (11) close to the cover plate (13); a second included angle is formed between one surface of the first sealing structure (15) facing away from the bottom plate (11) and one surface of the bottom plate (11) close to the cover plate (13);

the first included angle is larger than 90 degrees and smaller than 180 degrees, and the first included angle is the same as the second included angle.

4. The battery box according to claim 2, wherein the inner wall of the accommodating groove (121) opposite to the bottom plate (11) has a first included angle with the surface of the bottom plate (11) close to the cover plate (13); a second included angle is formed between one surface of the first sealing structure (15) facing away from the bottom plate (11) and one surface of the bottom plate (11) close to the cover plate (13);

the first included angle is larger than 0 degrees and smaller than 90 degrees, and the first included angle is the same as the second included angle.

5. The battery box according to any one of claims 2 to 4, wherein the receiving groove (121) extends in a second direction, and a length of the first sealing structure (15) in the second direction is the same as a length of the receiving groove (121) in the second direction.

6. The battery box according to claim 5, wherein a plurality of the connection members (16) are provided, and a plurality of the connection members (16) are provided at intervals in the second direction.

7. The battery compartment according to any one of claims 1 to 4, characterized in that the base plate (11) and the first sealing structure (15) are of one-piece construction.

8. The battery box according to any one of claims 1 to 4, further comprising:

the second sealing structure (17) is positioned in the accommodating space (14) and is attached to the surface, close to the cover plate (13), of the bottom plate (11), and the second sealing structure (17) is attached to the side plate (12) attached to the first sealing structure (15).

9. The battery box according to claim 8, characterized in that the front projection of the first sealing structure (15) on the cover plate (13) and the front projection of the second sealing structure (17) on the cover plate (13) have an overlap.

10. A battery device, characterized by comprising:

-a battery box (10), the battery box (10) being a battery box (10) according to any one of the preceding claims 1 to 9;

at least one battery (20) is disposed in the accommodation space (14).