CN218334082U

CN218334082U - Bottom protection plate, battery box and battery device

Info

Publication number: CN218334082U
Application number: CN202222583649.3U
Authority: CN
Inventors: 王留杰; 赵幸一
Original assignee: China Lithium Battery Technology Co Ltd
Current assignee: China Lithium Battery Technology Co Ltd
Priority date: 2022-09-28
Filing date: 2022-09-28
Publication date: 2023-01-17
Anticipated expiration: 2032-09-28

Abstract

The utility model relates to the technical field of batteries, a end backplate, battery box and battery device is disclosed, wherein, end backplate sets up in the bottom of box, including first guard plate, second guard plate and buffering part, first guard plate and second guard plate follow the range upon range of setting of first direction and connect, are formed with the accommodation space that is used for holding the buffering part between first guard plate and the second guard plate, and the buffering part is located in the accommodation space to be connected with first guard plate and second guard plate respectively, the buffering part is used for buffering the impact that first guard plate and/or second guard plate received through warping. The bottom protection plate is of a multilayer composite structure and comprises a buffering part, the buffering part can buffer impact on the first protection plate and/or the second protection plate through deformation, impact kinetic energy transmitted to the battery is weakened, and damage to the battery is reduced.

Description

End backplate, battery box and battery device

Technical Field

The utility model relates to a battery technology field especially relates to a end backplate, battery box and battery device.

Background

Power battery is new energy automobile's core component, place in the battery box with ganged form more, the bottom of battery box is end backplate, end backplate has the effect of bearing and protecting, the requirement has certain structural strength and rigidity, at present, end backplate adopts the high-strength steel board of thickness about 1mm more, although intensity meets the demands, its rigidity is great, when end backplate receives the striking, can't provide the buffering, thereby easily with impact energy transfer to battery, make the battery receive the damage, influence the safe handling of battery.

SUMMERY OF THE UTILITY MODEL

The utility model provides a end backplate, battery box and battery device for the end backplate rigidity that exists among the solution prior art is great, can not provide the problem of buffering for the battery.

In a first aspect, an embodiment of the present invention provides a bottom guard plate, which is disposed at the bottom of a box body, and includes a first guard plate, a second guard plate and a buffer component, the first guard plate and the second guard plate are stacked and connected along a first direction, the first guard plate and the second guard plate are formed with a receiving space for receiving the buffer component, the buffer component is disposed in the receiving space and respectively connected with the first guard plate and the second guard plate, and the buffer component is used for buffering through deformation the first guard plate and/or the impact received by the second guard plate.

The utility model discloses beneficial effect as follows:

this end backplate is multilayer composite construction, specifically include first guard plate, the second guard plate with locate the buffer unit in the accommodation space between the two, range upon range of setting and the connection of first guard plate and second guard plate, buffer unit also is connected with first guard plate and second guard plate respectively, so, it is fixed more firm between each layer of end backplate, and simultaneously, buffer unit can cushion the impact that first guard plate and/or second guard plate received through warping, thereby the impact energy who transmits to internal device has been weakened, the damage that the internal device received has been reduced.

In a second aspect, an embodiment of the present invention further provides a battery box, where the battery box includes the bottom protection plate in the above technical solution.

The utility model discloses beneficial effect as follows:

the backplate is located the bottom of battery box at the end, and the backplate is multilayer composite construction at the end, including the buffering part, the impact that the first guard plate of buffering and/or second guard plate received through warping, weakens the impact kinetic energy who transmits to the battery, reduces the damage that the battery received.

In a third aspect, the embodiment of the present invention further provides a battery device, in which the battery box includes the battery box and a battery disposed inside the battery box.

The utility model discloses beneficial effect as follows:

among this battery device, the bottom of battery box is provided with end backplate, and end backplate is multilayer composite construction, including the buffer unit, the buffer unit can weaken the impact kinetic energy of transmitting to the battery through the impact that first guard plate of deformation buffering and/or second guard plate received, reduces the damage that the battery received.

Drawings

Fig. 1 is an axial sectional view of a bottom guard plate according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of the skirt shown in FIG. 1;

FIG. 3 is an exploded view of the skirt shown in FIG. 1;

fig. 4 is a corrugated structural plate of a groove provided by an embodiment of the present invention;

fig. 5 is a honeycomb structural plate provided in an embodiment of the present invention;

fig. 6 is a schematic structural view of another bottom guard plate according to an embodiment of the present invention;

fig. 7 is a schematic structural view of another bottom guard plate according to an embodiment of the present invention;

fig. 8 is a schematic structural view of another bottom guard plate according to an embodiment of the present invention;

fig. 9 is a schematic structural view of another bottom protection plate according to an embodiment of the present invention;

fig. 10 is a schematic combination diagram of a first configuration plate and a second configuration plate in a bottom protection plate according to an embodiment of the present invention;

fig. 11 is a schematic view of a combination of a bottom protection plate and a battery according to an embodiment of the present invention;

fig. 12 is a schematic view of another combination of the bottom protection plate and the battery according to an embodiment of the present invention.

Reference numerals:

10-a first guard plate; 20-a second guard plate; 21-a recess; 22-a connecting portion; 30-a cushioning component; 31-a configuration plate; 31 a-groove corrugated configuration board; 31 b-a honeycomb configuration plate; 311-a first configuration plate; 312-a second configuration board; 32-a connecting plate; 300-a buffer chamber; 300 a-a first buffer chamber; 300 b-a second buffer chamber; 300 c-a third buffer chamber; 30 a-a buffer unit; 40-a containment space; 50-battery.

Detailed Description

To make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings, and it is to be understood that the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a bottom guard plate for the bottom guard plate rigidity that exists among the solution prior art is great, can not provide the problem of buffering for the battery.

As shown in fig. 1 to 3 and 6 to 9, the bottom protection plate includes a first protection plate 10, a second protection plate 20, and a buffer member 30, the first protection plate 10 and the second protection plate 20 are stacked and connected in a first direction, an accommodating space 40 for accommodating the buffer member 30 is formed between the first protection plate 10 and the second protection plate 20, the buffer member 30 is disposed in the accommodating space 40 and connected to the first protection plate 10 and the second protection plate 20, and the buffer member 30 is used for buffering an impact received by the first protection plate 10 and/or the second protection plate 20 by deformation.

Specifically, the end backplate is multilayer composite construction, specifically include first guard plate 10, second guard plate 20 and buffer unit 30, first guard plate 10 and second guard plate 20 stack up along the first direction and set up and fixed connection, here, the first direction is end backplate thickness direction, also be the Z axle direction in the figure, first guard plate 10 and second guard plate 20 form accommodation space 40 after connecting, buffer unit 30 locates in accommodation space 40, and buffer unit 30 respectively with first guard plate 10 and second guard plate 20 fixed connection, thus, it is fixed more firm between the end backplate each layer, be favorable to improving holistic structural strength, and simultaneously, in this kind of composite construction, buffer unit 30 can reduce holistic rigidity, when first guard plate 10 and/or second guard plate 20 received the impact, buffer unit 30 can play the effect of buffering through the deformation, weaken the impact energy who transmits to the inside of box, reduce the damage that the internal device of box received.

Buffer unit 30 is connected with two fixed surface that first guard plate 10, second guard plate 20 set up relatively along the first direction respectively, and like this, buffer unit 30 can all have great area of contact with first guard plate 10, second guard plate 20, can improve fixed effect to buffer unit 30 can play the effect of support and being connected between first guard plate 10 and second guard plate 20, makes end backplate have rigidity requirement and intensity requirement concurrently.

Alternatively, as shown in fig. 1, 2 and 3, the second protection plate 20 includes a recessed portion 21 recessed in a direction away from the first protection plate 10 and a connection portion 22 disposed on a peripheral side of the recessed portion 21, the connection portion 22 is connected to the first protection plate 10, specifically, may be connected by welding or fastening, and a space in the recessed portion 21 forms an accommodation space 40 for accommodating the buffer member 30.

In this way, the buffer part 30 may be surrounded by the first guard plate 10 and the second guard plate 20, and the first guard plate 10 and the second guard plate 20 are fixedly connected around the buffer part 30, and the strength of the material of the first guard plate 10 and the second guard plate 20 is large, which is advantageous for improving the overall strength of the bottom guard plate by connecting the first guard plate 10 and the second guard plate 20.

This end backplate can be applied to the battery box, and is provided with battery 50 in the battery box, and under some special operating modes, this kind of composite construction's end backplate can consume the impact energy who transmits to battery 50 through the deformation, reduces the damage that battery 50 received, provides the guarantee for battery 50's safe handling. Of course, the bottom guard plate can also be applied to other boxes.

Compared with the first protection plate 10 and the second protection plate 20, the buffer part 30 may be made of a solid plate with lower rigidity, and in a composite structure, the rigidity of the entire bottom protection plate may be reduced, or the buffer part 30 includes the configuration plate 31, and the configuration plate 31 may form a plurality of buffer cavities 300 in the accommodating space 40 between the first protection plate 10 and the second protection plate 20 at intervals, and when the bottom protection plate receives an external force, the buffer cavities 300 may absorb impact energy through deformation to form effective crushing, thereby providing sufficient buffering and reducing damage to the battery 50 and the like.

The buffer chamber 300 may have a circular or polygonal configuration when viewed in cross-section of the buffer chamber 300, where the polygonal shape includes, but is not limited to, a triangle, a quadrilateral, a pentagon, a hexagon, etc.

The configuration plate 31 may be divided into one or more buffer cavities 300 with different structures in the accommodating space 40, for example, as shown in fig. 7, the configuration plate 31 is divided into a first buffer cavity 300a with a triangular cross section in the accommodating space 40, and for example, as shown in fig. 8, the configuration plate 31 is divided into a second buffer cavity 300b with a quadrangular cross section and a third buffer cavity 300c with a hexagonal cross section in the accommodating space 40, and the buffer cavities 300 with other structures are not listed.

It is understood that the buffer chamber 300 has different structures and different stability, and the energy consumed by the deformation is different, for example, the buffer chamber 300 with a triangular cross section is more stable than the buffer chambers 300 with other structures, and the energy consumed by the deformation is more, and in particular, the type of the configuration plate 31 can be selected as required to form the buffer chamber 300 with a proper structure in the accommodating space 40.

It should be noted that the buffering cavity 300 may be a cavity defined by the configuration plates 31 and adjacent components, or may be a cavity formed inside the configuration plates 31, where the "adjacent components" may refer to the first protection plate 10 and the second protection plate 20, the connection plates 32 disposed between the configuration plates 31, or may refer to other configuration plates 31.

Optionally, the contoured plate 31 has grooves and/or cavities. The cross section of the groove is a non-closed figure, and can be in particular a V shape, a rectangle shape or other shapes, such as a configuration plate 31 shown in fig. 4, wherein the configuration plate 31 is provided with a V-shaped groove, and the configuration plate 31 is in particular a groove corrugated configuration plate 31a; the cross section of the cavity is a closed figure, specifically a shape of a circle, a triangle, a quadrangle, a pentagon or a hexagon, etc., as shown in fig. 5, the configuration plate 31 has a cavity with a cross section of a hexagonal structure, and the configuration plate 31 is specifically a honeycomb configuration plate 31b.

The number of the configuration plates 31 may be one, or may be plural, and when the number of the configuration plates 31 is plural, plural configuration plates 31 are stacked and connected in the first direction, where plural means at least two.

As shown in fig. 7 and 8, the cushioning member 30 includes a structural plate 31, and the structural plate 31 is a corrugated structural plate 31a and a honeycomb structural plate 31b, respectively, as seen from the cross-sectional structure, as shown in fig. 2 and 6, the cushioning member 30 includes two structural plates 31, and the two structural plates 31 are stacked and connected along a first direction, wherein the first direction is the thickness direction of the bottom guard plate, and the strength and rigidity of the bottom guard plate as a whole can be reasonably configured by combining different structural plates 31.

In the case where the cushioning member 30 includes a plurality of configuration plates 31, the configuration of the different configuration plates 31 may be the same or different, and for example, two configuration plates 31 may be both the groove corrugated configuration plate 31a or both the honeycomb configuration plates 31b, or, as shown in fig. 2 and 6, one of the two configuration plates 31 may be the groove corrugated configuration plate 31a and the other may be the honeycomb configuration plate 31b.

In addition, in the case where the cushioning member 30 includes a plurality of configuration plates 31, as shown in fig. 2, a connecting plate 32 is provided between two configuration plates 31 stacked up and down, and the two configuration plates 31 are connected to the connecting plate 32, respectively, so that the connection effect between the configuration plates 31 can be enhanced. In addition, as shown in fig. 6, two configuration plates 31 stacked up and down may be directly connected to each other.

In the above embodiment, as shown in fig. 1 to 3 and 6 to 8, the buffer member 30 includes one buffer unit 30a, the buffer unit 30a includes one or more configuration plates 31, each configuration plate 31 covers the whole area of the accommodating space 40, and for the plurality of configuration plates 31, different configuration plates 31 are stacked in the first direction, that is, in the thickness direction of the bottom shield plate, and the structures of the different configuration plates 31 may be the same or different. In other embodiments, as shown in fig. 9, the buffering component 30 includes a plurality of buffering units 30a, the buffering units 30a are disposed in different areas of the accommodating space 40, each buffering unit 30a may include one configuration plate 31 or a plurality of configuration plates 31, and when the number of the configuration plates 31 is plural, the configuration plates 31 are stacked and connected along the first direction, that is, in the extension plane of the bottom protection plate, the configuration plates 31 in each buffering unit 30a may be divided according to different protection performances to be satisfied by different areas, so as to dispose different buffering units 30a, the configuration plates 31 in each buffering unit 30a cover a local area of the accommodating space 40, and the buffering capacity of each buffering unit 30a is different, so as to implement differentiation of protection performances of different areas, and enhance protection for heavy spot areas.

With continued reference to fig. 9, the cushioning member 30 includes two cushioning units 30a, each of the two cushioning units 30a includes a structural plate 31, the structural plates 31 of the two cushioning units 30a adopt different structures, one is a corrugated structural plate 31a, the other is a honeycomb structural plate 31b, in other embodiments, each cushioning unit 30a may further include a plurality of structural plates 31, the structural plates 31 are stacked and connected along a first direction, and the structures of different structural plates 31 may be the same or different for the same cushioning unit 30a, and at least one structural plate 31 with different structures is included for different cushioning units 30 a.

By way of example, the battery box generally comprises a battery placing area and an electrical component placing area, and in the bottom protection plate, a regionalized layout can be realized according to the protection requirements of the two areas.

In addition, as shown in fig. 9, a connection plate 32 may be provided between different buffer units 30a, thereby reinforcing the connection between different buffer units 30a and improving the overall structural strength.

Optionally, the extending direction of the buffer cavity 300 is perpendicular to the first direction, the first direction is the thickness direction of the bottom guard plate, that is, the buffer cavity 300 extends in the extending plane of the bottom guard plate, the buffer cavity 300 is long, when the bottom guard plate is impacted, the buffer cavity 300 deforms under the action of external force, and the impact energy can be shared along the extending direction of the buffer cavity 300, so that the deformation of the bottom guard plate in the first direction is reduced, and the impact on the battery 50 and other components is weakened. Specifically, the buffer chamber 300 may extend along the length direction of the backplate, and may also extend along the width direction of the backplate, where the length direction of the backplate is indicated by the Y-axis and the width direction of the backplate is indicated by the X-axis.

Optionally, the configuration plates 31 include a first configuration plate 311 and a second configuration plate 312 stacked along a first direction, an extending direction of the buffer cavity 300 correspondingly formed by the first configuration plate 311 is perpendicular to an extending direction of the buffer cavity 300 correspondingly formed by the second configuration plate 312, and the extending directions of the two are perpendicular to the first direction.

As shown in fig. 10, the buffer cavity 300 correspondingly formed by the first configuration plate 311 extends along the X-axis direction, the buffer cavity 300 correspondingly formed by the second configuration plate 312 extends along the Y-axis direction, and the extension directions of the two are perpendicular to the Z-axis direction, so that when the floor panel is impacted, the impact energy can be distributed to a larger area along the extension direction of the buffer cavity 300 when the layers are transmitted, and the impact energy is further weakened.

The first configuration plate 311 may be a grooved corrugated configuration plate 31a, a honeycomb configuration plate 31b or a configuration plate of other structure, and similarly, the second configuration plate 312 may be a grooved corrugated configuration plate 31a, a honeycomb configuration plate 31b or a configuration plate of other structure, and both the first configuration plate 311 and the second configuration plate 312 shown in fig. 10 are the grooved corrugated configuration plate 31a.

Based on the same technical concept, the utility model also provides a battery box, including above-mentioned any one technical scheme end backplate, wherein, end backplate locates the bottom of battery box, and end backplate is multilayer composite construction, including buffer unit 30, buffer unit 30 can weaken the impact kinetic energy of transmission to battery 50 through the impact that first guard plate 10 of deformation buffering and/or second guard plate 20 received, reduces the damage that battery 50 received.

In end backplate structure, the intensity of first guard plate 10 and second guard plate 20 is great, both fixed connection, and buffer unit 30 sets up in accommodation space 40 between the two to respectively with first guard plate 10 and second guard plate 20 fixed connection, so, it is fixed more firm between each layer to have strengthened, is favorable to improving holistic structural strength, is applicable to and guarantees intensity and rigidity requirement in the bottom of battery box.

The outer surface layer of the bottom guard plate can adopt anticorrosive and stone-impact-resistant materials, such as: a glass fiber or carbon fiber composite board; if the inner surface of the bottom protection plate is directly contacted with the battery core, an insulating rigid material is adopted, such as: a phenolic resin-based material; if the battery is not in contact with the battery core, a metal material with better rigidity can be adopted, such as: steel plate, aluminum plate, etc.

Based on the same technical concept, the utility model also provides a battery device, including any one above-mentioned technical scheme battery box and set up the battery 50 in the battery box inside.

The battery box of the battery device adopts the bottom guard plate with multi-layer composite combination, and the integral rigidity is improved, so that the impact from the outside can be buffered, the impact kinetic energy transmitted to the battery 50 is weakened, and the damage to the battery 50 is reduced.

Alternatively, as shown in fig. 11, the buffer member 30 includes a configuration plate 31, the configuration plate 31 partitions a plurality of buffer cavities 300 in the accommodating space 40, and the buffer cavities 300 extend in the same direction as the stacking direction of the batteries 50. Thus, when one of the buffer cavities 300 is deformed by an external force, the row of cells 50 disposed above the buffer cavity 300 can share the transmitted impact energy, so that the influence on each cell 50 can be reduced.

Alternatively, as shown in fig. 12, the buffer member 30 includes a configuration plate 31, the configuration plate 31 partitions a plurality of buffer cavities 300 in the receiving space 40, and the buffer cavities 300 extend in a direction perpendicular to the stacking direction of the cells 50. That is, the batteries 50 are arranged along the extending direction of the buffer cavities 300, when one buffer cavity 300 is impacted, one or a few batteries 50 arranged above the buffer cavity 300 are affected, and the other batteries 50 are not affected or are less affected.

Generally, the cells 50 are stacked along the length direction or the width direction of the backplate, and the buffer chamber 300 extends in the same direction as the stacking direction of the cells 50, that is, the buffer chamber 300 may extend along the length direction or the width direction of the backplate.

It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. The utility model provides a bottom protection plate, its characterized in that sets up in the bottom of box, includes first guard plate, second guard plate and buffering part, first guard plate with the second guard plate is followed the range upon range of setting of first direction and is connected, first guard plate with be formed with between the second guard plate and be used for holding the accommodation space of buffering part, buffering part is located in the accommodation space, and respectively with first guard plate with the second guard plate is connected, buffering part is used for through the deformation buffering first guard plate and/or the impact that the second guard plate received.

2. The floor sheathing of claim 1 wherein said cushioning member comprises a contoured plate that separates a plurality of cushioning cavities within said receiving space.

3. A floor sheathing according to claim 2, wherein said cushioning cavity extends in a direction perpendicular to said first direction.

4. A backplate according to claim 2 or claim 3 in which the contoured plate has channels and/or cavities.

5. The floor sheathing according to claim 2 or 3, wherein the configuration plates are one or more in number, and when the configuration plates are plural in number, the plurality of configuration plates are stacked and connected in the first direction.

6. The floor sheathing of claim 5, wherein said form panels are provided in a plurality and the configuration of different form panels is the same or different.

7. A backplate according to claim 5, in which the plurality of said profiled plates comprises a first profiled plate and a second profiled plate stacked in said first direction, the buffer chambers formed in correspondence with the first profiled plate extending in a direction perpendicular to the direction of the buffer chambers formed in correspondence with the second profiled plate, and both extending in a direction perpendicular to the first direction.

8. The floorcovering of claim 5, wherein the cushioning member further comprises a connecting plate disposed between two adjacent configuration plates.

9. The floor sheathing according to claim 2 or 3, wherein said cushioning member comprises a plurality of cushioning units provided in different areas of said accommodating space, each of said cushioning units comprising one of said configuration plates or a plurality of said configuration plates, and when the number of said configuration plates is plural, the plural configuration plates are stacked and connected in said first direction.

10. The floorguard of any one of claims 1 to 3, wherein the second guard plate includes a recessed portion recessed in a direction away from the first guard plate and a connecting portion provided on a peripheral side of the recessed portion, the connecting portion being connected to the first guard plate, a space in the recessed portion forming the accommodation space.

11. A battery case characterized by comprising the floor sheathing of any one of claims 1 to 10.

12. A battery device characterized by comprising the battery box according to claim 11 and a battery provided in the battery box.

13. The battery device according to claim 12, wherein the buffer member includes a configuration plate that partitions a plurality of buffer cavities in the receiving space, the buffer cavities extending in the same direction as the stacking direction of the batteries.

14. The battery device of claim 12, wherein the buffer member comprises a configuration plate that partitions a plurality of buffer cavities in the receiving space, the buffer cavities extending in a direction perpendicular to a stacking direction of the batteries.