CN217848178U - Battery box and battery package - Google Patents

Abstract

The utility model discloses a battery box body and a battery pack, which comprises a box body, a beam body, an insulating layer and an adhesive layer, wherein the beam body is arranged on the box body; the insulating layer has first insulating section and second insulating section of interconnect, and the first insulating section cladding is in the top of roof beam body. The second insulating section is coated on the side part of the beam body, and the bottom end of the second insulating section extends downwards to the bottom end surface of the beam body; the side part of the adhesive layer is adhered to the bottom end of the second insulating section. A battery pack comprises a battery box body and a battery pack, wherein the battery pack is bonded with an adhesive layer. The utility model has the advantages that the beam body is coated with the insulating layer, the second insulating section of the insulating layer is coated on the bottom to prevent short circuit, and the side surface of the bottom end of the second insulating section is provided with the viscose layer for preventing falling off; the adhesive layer may be directly adhered to the battery pack.

Description

Battery box and battery package

Technical Field

The utility model relates to a power battery technical field especially relates to a battery box and battery package.

Background

At present, the power battery is widely applied to the fields of energy storage and transportation by the characteristics of environmental protection and good cycle performance. Generally, a power battery mainly comprises a battery box body and a battery module, wherein a beam body is arranged in the battery box body and used for dividing the battery box body into a plurality of battery cavities; the battery modules are placed in the battery cavities, and in the use process, the battery modules separated by the beam body are easy to have a short circuit condition, so that an insulating structure needs to be arranged on the beam body, if the insulating structure covers the bottom end face of the beam body, the condition of edge curling is easy to occur, and the battery box vibrates up and down to be loosened, so that the condition of insulation failure occurs; after the inefficacy, the battery module of two adjacent battery chamber short circuit easily appears the potential safety hazard. If the insulating structure is not covered to the bottom, part of the bottom end of the beam body is exposed, and the exposed part of the beam body is easy to contact with the battery pack to cause short circuit.

In addition, among the current power battery, its battery module includes the accommodation space who is enclosed by end plate and curb plate, sets up a plurality of batteries in accommodation space, and a plurality of batteries carry out spacing clamp tight back through end plate and curb plate, and the battery intracavity of putting into the battery box again is fixed through structures such as screw, bolt. On the basis of the structure, the end plates and the side plates of the battery module need to be processed at high cost, and the material cost of the battery module is high, so that the whole cost of the battery module formed by clamping a plurality of batteries through the end plates and the side plates is high.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, one of the purposes of the utility model is to provide a battery box body, wherein a beam body is coated with an insulating layer, a second insulating section of the insulating layer is coated on the bottom to prevent short circuit, and the side surface of the bottom end of the second insulating section is provided with an adhesive layer to prevent falling off; and the adhesive layer may directly adhere the battery pack.

The second object of the utility model is to provide a battery pack, but direct bonding group battery in its battery box.

The utility model discloses an one of the purpose adopts following technical scheme to realize:

the battery box body comprises a box body, a beam body, an insulating layer and an adhesive layer, wherein the beam body is arranged on the box body; the insulating layer is provided with a first insulating section and a second insulating section which are connected with each other, and the first insulating section is wrapped at the top end of the beam body; the second insulating section is coated on the side part of the beam body, and the bottom end of the second insulating section extends downwards to the bottom end face of the beam body; and the side part of the adhesive layer is adhered to the bottom end of the second insulating section.

The second purpose of the utility model is realized by adopting the following technical scheme:

the battery pack comprises a battery box body and a battery pack, wherein the battery pack is adhered to the adhesive layer.

Compared with the prior art, the beneficial effects of the utility model reside in that:

1. the insulating layer is wrapped on the beam body, the top end and the side portion of the beam body can be wrapped by the first insulating section and the second insulating section, a relatively large wrapping area can be formed on the beam body, the battery pack creepage distance of two adjacent battery cavities is increased, and the insulating effect is better.

2. The second insulation section of side cladding can extend at the bottom face of roof beam body on the roof beam body, prevents that the bottom of roof beam body from exposing, leans on when the group battery to form the short circuit with the roof beam body, and the group battery safety in utilization problem appears.

3. Because the second insulating section cladding forms the edge of curling easily in the bottom face department of roof beam body on earth, appears vibrating when the group battery uses and causes tearing easily in the edge of curling, so set up the viscose layer in the bottom position of second insulating section, prevent that the edge of curling from exposing.

4. To set up behind the box body of battery box, the viscose layer can direct coating on the bottom plate of box body, directly bonds the group battery in the battery intracavity after the assembly battery, need use structures such as end plate, curb plate, reduction battery manufacturing cost.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a sectional view of another embodiment of the present invention;

FIG. 3 is a cross-sectional view of another embodiment of the present invention;

fig. 4 is a schematic structural view of the battery box of the present invention;

fig. 5 is a schematic structural view of a battery pack according to the present invention;

fig. 6 is a schematic view of a partially exploded structure of the battery pack of the present invention.

In the figure: 10. a beam body; 11. spacing; 20. an insulating layer; 21. a first insulating section; 22. a second insulating segment; 221. an extension edge; 30. a box body; 31. a battery cavity; 32. an adhesive layer; 40. a battery pack.

Detailed Description

The invention will be further described with reference to the accompanying drawings and specific embodiments:

in the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

In the case of the example 1, the following examples are given,

as shown in fig. 1, 2 and 3, the battery box includes a box body 30, a beam 10, an insulating layer 20 and an adhesive layer 32, wherein the beam 10 is mounted on the box body 30, the beam 10 can be mounted inside the box body 30 or on a side of the box body 30, the insulating layer 20 has a first insulating section 21 and a second insulating section 22 connected to each other, when in use, the first insulating section 21 can be wrapped on a top end of the beam 10, the second insulating section 22 is wrapped on a side portion of the beam 10, a bottom end of the second insulating section 22 extends downward to a bottom end surface of the beam 10, and a side portion of the adhesive layer 32 is bonded to a bottom end of the second insulating section 22, that is, a portion of the second insulating section 22 can be wrapped inside the adhesive layer 32 and is not exposed.

On the basis of the structure, the beam body 10 can be externally coated with the insulating layer 20, the first insulating section 21 of the insulating layer 20 is coated on the top end surface of the beam body 10, the second insulating section 22 of the insulating layer 20 is coated on the side surface of the beam body 10, and the first insulating section 21 and the second insulating section 22 are connected, so that a complete coating surface can be formed on the surface of the beam body 10.

After that, the beam 10 is assembled to the box body of the battery box, referring to fig. 2, fig. 3 and fig. 4, the beam 10 is placed in the battery box and can be abutted by the battery pack 40, the bottom end of the beam 10 can be assembled on the bottom plate of the battery box through a screw or a bolt, and the like, because the surface of the beam 10 forms a large-area insulating covering surface through the first insulating section 21 and the second insulating section 22, the creepage distance of the battery pack 40 of two adjacent battery cavities 31 is increased, and the insulating effect is better.

Since the bottom end of the second insulating section 22 extends to the bottom end surface of the girder 10, the second insulating section 22 easily forms a curled edge at the bottom end surface of the girder 10 when the girder 10 is assembled on the bottom plate of the battery case. In the battery package use, the battery box can be along with the group battery vibration, and the group battery 40 that leans on to lean on the roof beam body 10 side also can vibrate from top to bottom, if the edge warp of second insulating section 22 exists, the second insulating section 22 of insulating layer 20 must be torn to the in-process that vibrates from top to bottom in the group battery, and at this in-process, second insulating section 22 can tear with roof beam body 10 and cause the pine to take off for insulating inefficacy.

Therefore, the outer side surface of the bottom end of the second insulating section 22 in this embodiment has the adhesive layer 32, the adhesive layer 32 can cover the second insulating section 22, the second insulating section 22 is kept tightly attached to the side surface of the beam body 10 under the action of the adhesive layer 32 for assembly, and no curling occurs, and meanwhile, when the battery pack 40 is placed, the battery pack 40 is also in contact with the second insulating section 22 above the adhesive layer 32, so that when the battery pack 40 vibrates along with the battery box body, the second insulating section 22 is covered by the adhesive layer 32 and does not move along with the friction of the battery pack 40, and therefore, the battery pack is prevented from being separated from the beam body 10, and the attached structure is stable with the beam body 10 in the using process, and no insulation failure occurs.

It should be noted that the second insulating layer 22 of the insulating layer 20 on the beam 10 in this embodiment may be only disposed on one side of the beam 10, and on the basis of this structure, the beam 10 may be located on the side of the battery box for the boundary beam of the battery box, i.e., for isolating the battery pack inside the battery box from the external environment. When the second insulating layers 22 are disposed on both sides of the beam 10, the beam 10 may be located inside the battery box to separate the battery packs inside the battery box.

It should be noted that, in a conventional battery box, the cross section of the beam 10 generally has a square structure, and the square side surface is a vertical surface and can be better abutted against and attached to the side surface of the battery pack 40, so that the assembled structure of the battery pack 40 forms a smaller assembly gap, and on the basis of the structure of the beam 10, the first insulating section 21 and the second insulating section 22 which are coated on the top end and the side surface of the beam 10 may be connected at a right angle.

Certainly, in some battery boxes, a beam 10 structure with a circular arc-shaped cross section top end is not excluded, and on the basis of the middle beam 10 structure, the first insulating section 21 and the second insulating section 22 may be connected by an arc angle and adapted to the beam 10 structure. In addition, choose for use the arc angle to connect first insulating segment 21 and second insulating segment 22, compare in the right angle and connect, it is longer to form insulating creepage distance, and it is better to practice thrift the effect.

In order to further improve the anti-falling effect of the insulating layer 20 and stabilize the assembly structure of the insulating layer 20, referring to fig. 2, the bottom end of the second insulating section 22 may extend toward the bottom end surface of the beam 10, i.e., the bottom end position of the second insulating section 22 is bent and extends toward the inner side of the bottom end surface of the beam 10 to form an extending edge 221, and the extending edge 221 may be wrapped on the bottom end surface of the beam 10.

Thus, when the second insulating section 22 of the insulating layer 20 extends to the bottom end surface of the beam 10 from top to bottom, the extending edge 221 of the second insulating section 22 can be folded at the inner side of the bottom end surface of the beam 10, the extending edge 221 of the second insulating section 22 can be pressed by the bottom end surface of the beam 10 after the beam 10 is assembled in the battery box, and the formed connecting structure is located below and does not directly contact with the battery pack 40, so that when the battery pack 40 vibrates along with the battery box structure, friction is not formed at the connecting position of the second insulating section 22, and the cladding structure of the second insulating section 22 is stable.

In addition, because the second insulating section 22 is wrapped on the bottom end surface of the beam 10 by the extending edge 221, in the vibration process of the battery pack 40, the extending edge 221 can form a limit position on the bottom end surface of the beam 10 to limit the second insulating section 22 from moving up and down, the wrapping of the second insulating section 22 is stable, and the formed insulating structure has better stability.

Further, referring to fig. 3, the second insulating sections 22 may be connected to both sides of the first insulating section 21, and on the basis of the structure, the beam 10 structure may be assembled in a battery box, and the battery cavities 31 are located on both sides of the beam 10, so that after the battery packs 40 are placed in the battery cavities 31 on both sides of the beam 10, the battery packs 40 on both sides of the beam 10 may respectively abut against the second insulating sections 22 on both sides of the beam 10, and the second insulating sections 22 on both sides are connected with the first insulating section 21, so that insulation of the battery packs 40 in both battery cavities 31 can be effectively achieved.

On the basis of the structure, the extending edges 221 of the two second insulating segments 22 can be connected, that is, the first insulating segment 21, the second insulating segments 22 on both sides, and the extending edges 221 of the second insulating segments 22 can enclose a "mouth" structure and directly cover the outer surface of the beam body 10, and there is no possibility of edge curling, so that no matter how the battery pack 40 rubs against the second insulating segments 22, the insulating layer 20 cannot be separated.

Besides the insulating layer 20 structure shown in fig. 2 and 3 is used for preventing the insulating layer 20 and the beam 10 from being torn, another structure may be selected, that is, an anti-slip part is arranged on the side surface of the beam 10, and the anti-slip part can increase the friction force between the second insulating section 22 and the side surface of the beam 10, because the anti-slip part is arranged on the side surface of the beam 10, and after the second insulating section 22 is coated, the protection part is positioned inside the second insulating section 22, and cannot rub against the battery pack 40, and therefore cannot rub against the surface of the battery pack 40, and cannot affect the performance of the battery pack 40.

The anti-slip part increases the inner side of the second insulating section 22, the second insulating section 22 and the side surface of the beam body 10 have certain friction force, and when the battery pack 40 moves along with the vibration of the battery box body, the friction force provided by the anti-slip part can form resistance force for preventing the second insulating section 22 from moving upwards relative to the beam body 10, so that the coating structure of the second insulating section 22 is stable.

On the structure basis that has above-mentioned antiskid, above-mentioned antiskid can be by locating the bulge formation of roof beam body 10 side for the protruding, the bulge can be protruding rib, protruding platform or bump etc. realize, the corresponding is equipped with the concave position that matches with the bulge structure in second insulating section 22 inboard, when second insulating section 22 receives the 40 effort of group battery, the concave position alright receive convex protruding rib, protruding platform or bump restriction its and reciprocate of second insulating section 22, and then realize insulating layer 20's anticreep.

Of course, the inner side surface friction of the second insulating section 22 may also be increased by providing structures such as protruding ribs, protruding platforms, or protruding points on the inner side of the second insulating section 22, and the friction between the second insulating section 22 and the side surface of the beam body 10 may also be increased to achieve the anti-loosening effect.

Further, the insulating layer 20 may be formed by glue solution applied to the beam 10, and a gluing process is generally performed in an assembly process based on a battery pack, so that the insulating layer 20 may be formed on the surface of the beam 10 directly after the glue solution is dried by applying the glue solution to the surface of the beam 10 during processing, and the assembling of the insulating layer 20 is not required to be completed by other processes.

Of course, the glue solution must be an insulating glue solution in the prior art to play an insulating role.

In this embodiment, the insulating layer 20 further includes an insulating smooth surface layer, which may be formed by coating a glue solution on an inner side of the insulating smooth surface layer, that is, the inner side of the insulating layer 20 is the glue solution layer and can be attached to the surface of the beam 10, and an outer side of the insulating layer 20 is insulating smooth, and after the insulating layer 20 is coated on the surface of the beam 10, the insulating smooth surface layer is exposed on the outer surface of the beam 10.

On the one hand, if solitary glue solution is after the mummification, the insulating layer 20 of formation can be soft relatively, and warp when vibrating about the group battery 40 easily after soft insulating layer 20 and the contact of group battery 40 relatively, produces great frictional force and can lead to insulating layer 20 and roof beam body 10 to break away from, so adopt insulating smooth top layer can be used as supporting glue solution layer, make glue solution mummification back structure relatively harder, when can preventing group battery 40 from vibrating about, difficult deformation, therefore insulating layer 20 stable in structure, difficult inefficacy. In addition, because the surface of the insulating anti-skid surface layer is smooth, the battery pack 40 is not scratched when being in contact with the battery pack 40, the surface friction between the battery pack 40 and the insulating layer 20 is reduced, and the insulating layer 20 is not easy to separate in the vibration process of the battery pack 40.

Furthermore, above-mentioned insulating smooth top layer is the fibre cloth, because fibre cloth not only the surface is smooth, still has intensity height simultaneously, the light and high temperature resistance characteristics of quality, so be applicable to and form better insulating layer 20 of bulk strength after the glue solution coating, the quality is light simultaneously, whole weight can not obviously increase after the insulating layer 20 is add to the roof beam body 10, in addition, fibre cloth is high temperature resistant, in the battery package use, can not appear the ageing condition by the high temperature environment in the battery box, therefore insulating layer 20 that forms is difficult for losing efficacy.

It should be noted that the insulating layer 20 may also be formed by a rubber mat, and compared with the insulating layer 20 formed by glue, the insulating layer 20 directly formed by a rubber mat needs to be connected by another structure, such as glue or assembly by a screw, and in any case, the rubber mat can be coated on the surface of the beam 10.

It should be noted that, because the battery pack is in use, heat is inevitably generated, so that the temperature inside the battery box is high, and the commonly-used rubber mat is easy to age under a long-term hot environment, and generally hardens after the rubber mat ages, so that surface cracking, surface roughness and mechanical property reduction occur, on one hand, the rubber mat is separated from the surface of the beam body 10, and is easy to separate from the beam body 10 in the up-and-down vibration process of the battery pack 40, so that the insulation failure occurs, on the other hand, if the rubber mat ages, the rubber mat is rough in the surface, so that the contact surface with the battery pack 40 is rough, the battery pack 40 is easy to scratch in the up-and-down vibration process of the battery pack 40, and the battery performance is affected.

Similarly, on the basis that the insulating layer 20 is a rubber pad structure, the insulating layer 20 also includes an insulating smooth surface layer, and the rubber pad is disposed on the inner side of the insulating smooth surface layer and attached to the surface of the beam 10, so that the insulating smooth surface layer is exposed on the outer surface of the beam 10. Namely, the inner side of the formed insulating layer 20 is a rubber pad which can be attached to the surface of the beam 10, the outer side of the insulating layer 20 is smooth, and after the insulating layer 20 covers the surface of the beam 10, the smooth insulating surface layer is exposed out of the outer surface of the beam 10.

On the one hand, if insulating layer 20 that solitary cushion formed can be soft relatively, and warp easily when vibrating about the group battery 40 after insulating layer 20 and the contact of group battery 40 that soft relatively, produce great frictional force and can lead to insulating layer 20 and roof beam body 10 to break away from, so adopt insulating smooth top layer can be used as supporting glue layer for the cushion structure is harder relatively, when can preventing group battery 40 vibration from top to bottom, difficult deformation, therefore insulating layer 20 stable in structure, difficult inefficacy. In addition, because the surface of the insulating anti-skid surface layer is smooth, the battery pack 40 is not scratched when being in contact with the battery pack 40, the surface friction between the battery pack 40 and the insulating layer 20 is reduced, and the insulating layer 20 is not easy to separate in the vibration process of the battery pack 40.

Certainly, on the structure basis that insulating layer 20 is cushion and insulating smooth top layer, the same, insulating smooth top layer also is the fibre cloth, because fibre cloth not only the surface is smooth, still have intensity height simultaneously, the light and high temperature resistance characteristics of quality, the event is applicable to the better insulating layer 20 of bulk strength of formation after the glue solution coating, the quality is light simultaneously, whole weight can not obviously increase after insulating layer 20 is add to the roof beam body 10, in addition, fibre cloth is high temperature resistant, in the battery package use, can not receive the battery box internal high temperature environment and the ageing condition appears, therefore insulating layer 20 that forms is difficult for becoming invalid.

It should be noted that the fiber cloth may be made of PET fiber, PI fiber, PMI fiber, carbon fiber, or glass fiber. In addition, the fiber cloth can be replaced by an organic insulating film in the prior art, such as polyethylene and the like).

Further, the insulating layer 20 is provided with one or more layers, and in a general use case, the surface of the beam 10 is covered with one layer of the insulating layer 20, and in order to better prevent the insulation failure, two or more layers of the insulating layers 20 may be covered on the surface of the beam 10, and the insulating layers 20 may be stacked one on another, so that after one layer of the insulating layer 20 fails, the insulating layer 20 on the inner side may function to realize layer-by-layer insulation.

In the case of the example 2, the following examples are given,

based on the structure of the beam body proposed in embodiment 1, referring to fig. 1-4, this embodiment provides a battery box body, and specifically, the beam body 10 is disposed in the box body 30, and the beam body 10 can divide the box body 30 into battery cavities 31. The adhesive layer 32 is adhered to the bottom wall of the battery cavity 31, and the adhesive layer 32 can adhere to the battery pack 40.

On the structure basis of this battery box, because directly be equipped with adhesive layer 32 on the diapire of battery chamber 31, therefore can be with the direct bonding of group battery 40 on adhesive layer 32, arrange the group battery 40 structure in proper order on adhesive layer 32 and can be at the built-in battery module of battery chamber 31, compare in prior art, pack the group battery 40 who will arrange in proper order and pack into by the end plate, the structure of the accommodation space that the curb plate encloses, need be with the help of the end plate, the curb plate cooperation connection structure comes the clamping, put into battery chamber 31 after the clamping is good again, this embodiment, directly bond group battery 40 in battery chamber 31, omit the end plate, the curb plate and be used for assembling the connection structure of end plate and curb plate, can effectively practice thrift the processing cost.

In addition, because the end plate, curb plate structure also can aggravate the whole weight of battery package after assembling to battery chamber 31, therefore after the battery chamber 31 of the battery box of packing into, battery overall structure also can be heavier, and this embodiment is owing to omit structures such as end plate, curb plate, therefore battery structure weight also can be lighter, after being used for consumer such as electric motor car or computer, the quality of consumer also can be lighter, performance is better.

Further, the viscose layer 32 is heat-conducting glue, and group battery 40 is in the actual work in-process, can continuously take place the heat, if not dispel the heat, then the too high condition of battery box inside temperature can appear, the heat-conducting glue that has the heat conductivility among the prior art can be chooseed for use to the viscose layer 32 in this embodiment, heat-conducting glue tiling is on the bottom plate of box body 30, therefore heat-conducting glue can evenly guide the heat that group battery 40 work produced to the bottom plate of box body 30, make the heat can evenly disperse, battery working property is better. It should be noted that the heat conductive adhesive in the present embodiment may be a heat conductive structural adhesive in the prior art.

In addition, since the insulating layer 20 on the beam 10 in this embodiment has the second insulating section 22 covering the bottom, the thermal conductive adhesive does not contact the beam 10 itself, so that the heat of the battery can be prevented from being transmitted to the beam through the thermal conductive adhesive, which results in uneven heat dissipation.

Of course, the adhesive layer 32 may be formed by a double-sided adhesive tape in the prior art, or may be formed by an adhesive solution coated on the bottom plate of the box body 30.

In the case of the example 3, the following examples are given,

based on the structure of the battery case proposed in embodiment 1 and embodiment 2, referring to fig. 1 to 6, this embodiment provides a battery pack, which includes the battery case in embodiment 2 and a battery pack 40, wherein the battery pack 40 is adhered to the adhesive layer 32. Because the internal through roof beam body 10 partition formation battery chamber 31 of battery box in embodiment 2, and the diapire of battery chamber 31 is equipped with adhesive layer 32, therefore when the assembly battery, can bond battery pack 40 and adhesive layer 32, arrange the battery pack 40 structure in proper order on adhesive layer 32 and can adorn battery module in battery chamber 31, compare in prior art, pack 40 that will arrange in proper order and pack into by the end plate, the structure of the accommodation space that the curb plate encloses, need be with the help of the end plate, the curb plate cooperation connection structure clamps, put into battery chamber 31 after the clamping is good, this embodiment, directly bond battery pack 40 in battery chamber 31, omit the end plate, the curb plate and be used for assembling the connection structure of end plate and curb plate, can effectively practice thrift the processing cost.

In addition, because the end plate, curb plate structure also can aggravate the whole weight of battery module after assembling to battery chamber 31, therefore after the battery chamber 31 of the battery box of packing into, battery overall structure also can be heavier, and this embodiment is owing to omit structures such as end plate, curb plate, therefore battery structure weight also can be lighter, after being used for consumer such as electric motor car or computer, the quality of consumer also can be lighter, performance is better.

Various other modifications and changes can be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes should fall within the scope of the claims.

Claims (10)

1. The battery box body is characterized by comprising a box body (30), a beam body (10), an insulating layer (20) and an adhesive layer (32), wherein the beam body (10) is arranged on the box body (30); the insulating layer (20) is provided with a first insulating section (21) and a second insulating section (22) which are connected with each other, and the first insulating section (21) is wrapped at the top end of the beam body (10); the second insulating section (22) is coated on the side part of the beam body (10), and the bottom end of the second insulating section (22) extends downwards to the bottom end face of the beam body (10); the side part of the adhesive layer (32) is bonded to the bottom end of the second insulating section (22).

2. The battery case according to claim 1, wherein the bottom end of the second insulating section (22) extends toward the bottom end surface of the beam body (10) and is formed as an extended edge (221), and the extended edge (221) wraps the bottom end surface of the beam body (10).

3. The battery case according to claim 2, wherein the second insulating section (22) is connected to both sides of the first insulating section (21), and the extending edges (221) of the two second insulating sections (22) are connected.

4. The battery box body according to claim 1, wherein the side of the beam body (10) is provided with a slip prevention part for increasing the friction force of the second insulation section (22) with the side of the beam body (10).

5. The battery box body as claimed in claim 4, wherein the anti-slip part is a convex part protruding from the side surface of the beam body (10), and the inner side of the second insulating section (22) is provided with a concave position matching with the convex part.

6. The battery box according to claim 1, characterized in that the insulating layer (20) is formed by glue or a glue mat.

7. The battery box body according to claim 6, wherein the insulating layer (20) further comprises an insulating smooth surface layer, and the glue solution or the glue pad is arranged on the inner side of the insulating smooth surface layer and attached to the surface of the beam body (10), so that the insulating smooth surface layer is exposed out of the outer surface of the beam body (10).

8. A battery case according to any one of claims 1 to 7, characterized in that the insulating layer (20) is provided with one or more layers.

9. A battery case according to any one of claims 1 to 7, wherein the adhesive layer (32) is a thermally conductive adhesive.

10. A battery pack comprising a battery case according to any one of claims 1 to 9 and a battery pack (40), wherein the battery pack (40) is adhered to the adhesive layer (32).

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