CN219759829U - Battery device - Google Patents

Abstract

The utility model relates to the technical field of batteries, and discloses a battery device which comprises a battery box and a plurality of single batteries; the battery box comprises a bottom plate, a structural beam and a supporting structure, wherein the bottom plate and the structural beam form an accommodating space, and the supporting structure is positioned in the accommodating space and connected with the structural beam; the plurality of single cells set up in accommodation space, and the single cell is close to one side of bottom plate and includes first holding surface and second holding surface, and the bottom plate is kept away from to the second holding surface for first holding surface to first holding surface is close to the structural beam for the second holding surface, and first holding surface is supported with the bottom plate and is leaned on, and the second holding surface is supported with the one side that bearing structure deviates from the bottom plate and is leaned on. The utility model discloses an utilize bottom plate and bearing structure to support the battery cell simultaneously, can make the battery cell inside be close to the pressure evenly distributed that one side of bottom plate was applyed to the battery cell, reduce the deformation volume of one side that the battery cell is close to the bottom plate to this job stabilization nature that can improve the battery cell.

Description

Battery device

Technical Field

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

Background

At present, the battery device is an important component part in the electric automobile, and the design optimization of the battery device becomes an important item for the development of the electric automobile.

However, the stress on one side of the single battery close to the bottom plate in the current battery device is concentrated, so that the deformation quantity on one side of the single battery close to the bottom plate is large, and the working stability of the single battery is affected.

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

Disclosure of Invention

An object of the present disclosure is to overcome the disadvantage of poor operation stability of a unit cell in the above-described related art battery device, and to provide a battery device including a unit cell having high operation stability.

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

the battery box comprises a bottom plate, a structural beam and a supporting structure, wherein an accommodating space is formed by the bottom plate and the structural beam in a surrounding mode, and the supporting structure is positioned in the accommodating space and connected with the structural beam;

the plurality of single batteries are arranged in the accommodating space, one side, close to the bottom plate, of each single battery comprises a first supporting surface and a second supporting surface, the second supporting surface is far away from the bottom plate relative to the first supporting surface, the first supporting surface is close to the structural beam relative to the second supporting surface, the first supporting surface is propped against the bottom plate, and the second supporting surface is propped against one surface, deviating from the bottom plate, of the supporting structure.

The battery device that this disclosure provided, on the one hand, through supporting first holding surface and bottom plate to support the second holding surface and bearing structure deviates from the one side of bottom plate and support the battery cell simultaneously with bottom plate and bearing structure, with this can make the inside pressure that is close to one side of bottom plate to the battery cell applied of battery cell evenly distributed on first holding surface and second holding surface, thereby can reduce the deformation volume of first holding surface and second holding surface, thereby can improve the stability of battery cell work. Meanwhile, as the deformation amount of the first supporting surface is smaller, the deformation amount of the bottom plate can be reduced.

On the other hand, as the second supporting surface is far away from the bottom plate relative to the first supporting surface, the position where the second supporting surface is abutted against the supporting structure can be higher than the position where the first supporting surface is abutted against the bottom plate. When the first supporting surface is stressed to deform, the supporting structure can ensure that the second supporting surface is stable, so that the second supporting surface can be utilized to limit the sinking of the first supporting surface, the deformation of the first supporting surface can be further reduced, and the working stability of the single battery can be further improved. At the same time, the amount of deformation of the base plate can be further 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 partial schematic structural view of a first view of an exemplary embodiment of a battery device of the present disclosure.

Fig. 2 is a partial schematic structural view of a second view of an exemplary embodiment of a battery device of the present disclosure.

Fig. 3 is a schematic structural view of an example embodiment of a structural beam of the present disclosure.

Fig. 4 is a schematic structural view of a first view angle of an exemplary embodiment of a single battery of the present disclosure.

Fig. 5 is a schematic structural view of a second view angle of an exemplary embodiment of a single battery of the present disclosure.

Reference numerals illustrate:

10. a battery box; 11. a bottom plate; 111. a heat exchange flow passage; 12. a structural beam; 13. a support structure; 131. a first support plate; 132. a second support plate; 133. a third support plate; 134. spacing; 135. reinforcing ribs; 14. an accommodation space; 15. a side plate; 16. a receiving chamber;

20. a single battery; 21. a first support surface; 22. a second support surface; 23. a third support surface; 24. a fourth support surface; 25. a battery case; 26. a first surface; 27. a second surface; 28. a third surface; 29. a battery post;

x, a first direction; y, length direction; z, height direction; w, thickness 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 exemplary embodiments of the present disclosure provide a battery device, which may include a battery case 10 and a plurality of unit cells 20, as shown with reference to fig. 1 to 5; the battery box 10 may include a bottom plate 11, a structural beam 12, and a support structure 13, the bottom plate 11 and the structural beam 12 may enclose an accommodating space 14, and the support structure 13 may be positioned in the accommodating space 14 and connected with the structural beam 12; the plurality of unit cells 20 may be disposed in the accommodating space 14, a side of the unit cell 20 close to the bottom plate 11 may include a first supporting surface 21 and a second supporting surface 22, the second supporting surface 22 is far away from the bottom plate 11 relative to the first supporting surface 21, and the first supporting surface 21 is close to the structural beam 12 relative to the second supporting surface 22, the first supporting surface 21 may abut against the bottom plate 11, and the second supporting surface 22 may abut against a side of the supporting structure 13 facing away from the bottom plate 11.

According to the battery device provided by the disclosure, on one hand, the first supporting surface 21 is abutted against the bottom plate 11, and the second supporting surface 22 is abutted against one surface, deviating from the bottom plate 11, of the supporting structure 13, so that the bottom plate 11 and the supporting structure 13 can be utilized to simultaneously support the single battery 20, and the pressure applied to one side, close to the bottom plate 11, of the single battery 20 inside the single battery 20 can be uniformly distributed on the first supporting surface 21 and the second supporting surface 22, so that the deformation of the first supporting surface 21 and the second supporting surface 22 can be reduced, and the working stability of the single battery 20 can be improved. Meanwhile, since the deformation amount of the first supporting surface 21 is small, the deformation amount of the bottom plate 11 can be reduced.

On the other hand, since the second support surface 22 is far from the base plate 11 relative to the first support surface 21, the portion where the second support surface 22 abuts against the support structure 13 can be made higher than the portion where the first support surface 21 abuts against the base plate 11. When the first supporting surface 21 is deformed under the force, the supporting structure 13 can ensure that the second supporting surface 22 is stable, so that the second supporting surface 22 can be utilized to limit the sinking of the first supporting surface 21, and the deformation of the first supporting surface 21 can be further reduced, so that the working stability of the single battery 20 can be further improved. At the same time, the amount of deformation of the bottom plate 11 can be further reduced.

It should be noted that, since the second supporting surface 22 is far away from the bottom plate 11 relative to the first supporting surface 21, a space may be provided between the second supporting surface 22 and the bottom plate 11, and the supporting structure 13 may extend into the space and abut against the second supporting surface 22 to support the second supporting surface 22.

The structural beams 12 of the battery box 10 may be plural, and the structural beams 12 close to the first support surface 21 with respect to the second support surface 22 are structural beams 12 provided with the support structures 13.

In addition, the abutment of the first support surface 21 with the bottom plate 11 means that there is an interaction force between the first support surface 21 and the bottom plate 11, namely: the base plate 11 may provide a supporting force to the first supporting surface 21 to support the first supporting surface 21.

Abutment of the second support surface 22 with the side of the support structure 13 facing away from the base plate 11 means that there is an interaction force between the second support surface 22 and the side of the support structure 13 facing away from the base plate 11, i.e.: the side of the support structure 13 facing away from the base plate 11 may provide a supporting force to the second support surface 22 for supporting the second support surface 22.

In one embodiment, the weight force applied by the cells 20 to the support structure 13 may be greater than the weight force applied by the cells to the base plate 11, namely: the single battery 20 can be lifted by the supporting structure 13, so that most of gravity of the single battery 20 is applied to the supporting structure 13, and accordingly stress of the bottom plate 11 can be reduced, and deformation or damage of the bottom plate 11 is prevented.

In one embodiment of the present disclosure, referring to fig. 1 and 2, the battery case 10 may include a bottom plate 11, a protection cover, and four side plates 15, the bottom plate 11 and the protection cover may be rectangular, four side plates 15 are disposed around the bottom plate 11, the four side plates 15 are connected end to form a rectangular ring, the protection cover is disposed at the other side of the four side plates 15, and the protection cover is disposed opposite to the bottom plate 11. The bottom plate 11, the protective cover and the four side plates 15 surround to form a receiving cavity 16.

Of course, in other example embodiments of the present disclosure, the bottom plate 11 and the protective cover may be provided in a circular shape, an oval shape, a trapezoid shape, a hexagon shape, etc., and the side plate 15 may be provided in one or more and formed around the circular shape, the oval shape, the trapezoid shape, the hexagon shape, etc., such that the battery case 10 is formed in a cylindrical shape, an oval 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 structural beam 12 may be one or more side plates 15 of the battery box 10, that is, the accommodating cavity 16 may be an accommodating space 14 surrounded by the bottom plate 11 and the structural beam 12.

In another embodiment, the structural beam 12 may not be the side plate 15 of the battery box 10, for example: the structural beam 12 may also be a dividing beam, a spandrel beam, a stiffening beam, etc., which may be disposed within the receiving cavity 16 and define the receiving space 14 with the base plate 11. That is, in this embodiment, the accommodation space 14 may be at least a part of the accommodation chamber 16.

In one embodiment of the present disclosure, the side of the base plate 11 adjacent to the unit cells 20 may be planar. It will be appreciated that the side of the base plate 11 adjacent to the cells 20 is not provided with any protrusions or recesses. Since the second supporting surface 22 is far away from the bottom plate 11 relative to the first supporting surface 21, the single battery 20 is not lifted up as a whole when the supporting structure 13 supports the second supporting surface 22, and a gap between the first supporting surface 21 and the bottom plate 11 can be avoided, so that the first supporting surface 21 can be kept against the bottom plate 11. Accordingly, since there is no gap between the first support surface 21 and the bottom plate 11, it is not necessary to provide a projection on the side of the bottom plate 11 that is still close to the unit cells 20 to support the first support surface 21 with the projection.

When the side of the bottom plate 11 close to the unit cells 20 is planar, the manufacturing difficulty and manufacturing cost are lower than those of the bottom plate 11 provided with the projections. Also, the protrusions provided on the conventional base plate 11 have weak bearing capacity and cannot provide a large supporting force to the unit cells 20. And this disclosure is through setting up the one side that bottom plate 11 is close to battery cell 20 to the plane, can cancel the arch to can improve the bearing capacity of bottom plate 11, make bottom plate 11 can provide great holding power to battery cell 20, with this pressure that guarantees that battery cell 20 inside is close to battery cell 20 and is exerted can evenly distributed to battery cell 20 one side that is close to bottom plate 11, reduce the deformation volume of battery cell 20 and be close to battery cell 11 one side, guarantee battery cell 20's job stabilization nature.

In one embodiment of the present disclosure, a heat exchange flow passage 111 may be provided in the bottom plate 11, and the heat exchange flow passage 111 may be used to transfer a heat exchange medium. Namely: the bottom plate 11 may be a heat exchange plate, and a heat exchange medium may be introduced into the heat exchange flow channel 111, so that heat generated by the unit cell 20 and heat of the heat exchange medium may be exchanged by providing the heat exchange medium. Namely: when the unit battery 20 needs to be cooled, a heat exchange medium with a lower temperature can be introduced into the heat exchange flow channel 111 to cool the unit battery 20; when the temperature of the unit battery 20 needs to be raised, a heat exchange medium with a higher temperature may be introduced into the heat exchange flow channel 111 to heat the unit battery 20.

In this example embodiment, the heat exchange medium may be a phase change material, such as: water, acetic acid, and the like. However, the heat exchange medium is not limited thereto, and may be other materials, so long as heat exchange can be achieved, and details are not described here.

In this embodiment, since the side of the bottom plate 11 close to the unit cell 20 is a plane, the side of the heat exchange plate close to the unit cell 20 is a plane.

Because the supporting structure 13 can not raise the whole single cell 20 when supporting the second supporting surface 22, the gap between the first supporting surface 21 and the heat exchange plate can be avoided, so that the single cell 20 can be directly exchanged by using the planar heat exchange plate.

Meanwhile, since the protruding heat exchange flow channel 111 cannot be directly stressed, the probability of damaging the heat exchange flow channel 111 of the unit cell 20 is increased when the unit cell 20 is disposed on a conventional heat exchange plate. Accordingly, the bearing capacity of the heat exchange plate can be improved by setting the surface of the heat exchange plate to be a plane, so that the heat exchange plate can be directly stressed, and the heat exchange flow channel 111 is prevented from being damaged when the single battery 20 is arranged on the heat exchange plate.

In one embodiment of the present disclosure, as shown with reference to fig. 2 and 3, a side of the support structure 13 proximate the base plate 11 may abut the base plate 11. So set up, can utilize bottom plate 11 to provide certain support to bearing structure 13, avoid bearing structure 13 atress too big and lead to taking place deformation or cracked problem to this can guarantee that bearing structure 13 can provide the steady support that lasts to second holding surface 22, further guarantee the stability of battery cell 20 in the course of the work.

In this embodiment, the support structure 13 may include a first support plate 131, a second support plate 132, and a third support plate 133. The first support plate 131 and the second support plate 132 may have a space therebetween, and one end of the first support plate 131 and one end of the second support plate 132 may each be connected with the structural beam 12, and the third support plate 133 may be connected with one end of the first support plate 131 remote from the structural beam 12 and one end of the second support plate 132 remote from the structural beam 12. Wherein the first support plate 131 abuts against the bottom plate 11, and the second support plate 132 abuts against the second support surface 22. It will be appreciated that the support structure 13 may be a hollow structure due to the spacing between the first support plate 131 and the second support plate 132. So configured, the weight of the support structure 13 may be reduced to reduce the overall weight of the battery device.

In another embodiment, the supporting structure 13 may be a solid structure, so that the supporting structure 13 has a higher bearing capacity than a hollow supporting structure, and the probability of deformation or fracture of the supporting structure is reduced.

In another embodiment of the present disclosure, the side of the support structure 13 near the bottom plate 11 may not abut the bottom plate 11, i.e., there may be a gap between the side of the support structure 13 near the bottom plate 11 and the bottom plate 11.

In the present embodiment, when the support structure 13 includes the first support plate 131, the second support plate 132, and the third support plate 133, the first support plate 131 may not abut against the bottom plate 11, i.e., there may be a gap between the first support plate 131 and the bottom plate 11.

In one embodiment of the present disclosure, the interval between the first support plate 131 and the second support plate 132 may be in communication with the heat exchange flow passage 111. Thus, the heat exchange flow passage 111 may transfer the heat exchange medium into the space between the first support plate 131 and the second support plate 132. Since the first support plate 131 abuts against the second support surface 22, the heat exchange medium can exchange heat with the second support surface 22, so that the heat exchange effect of the battery device can be improved.

In one embodiment of the present disclosure, the first support plate 131, the second support plate 132, and the third support plate 133 may be in a unitary structure. Namely: the first support plate 131, the second support plate 132 and the third support plate 133 may be manufactured integrally, so that the connection position inside the support structure 13 is reduced while the support structure 13 has a larger structural strength, so that the possibility of cracking at the connection position can be reduced, and the support structure 13 can be ensured to have a larger bearing capacity. But not limited thereto, the first support plate 131, the second support plate 132, and the third support plate 133 may be a separate structure, which is also within the scope of the present disclosure.

In one embodiment of the present disclosure, the support structure 13 may further include at least one stiffener 135. At least one reinforcing rib 135 may be disposed in the space and may be coupled with the first support plate 131 and the second support plate 132. So set up, can utilize strengthening rib 135 to support first backup pad 131 and second backup pad 132, improve the structural strength of first backup pad 131 and second backup pad 132 for the bearing capacity of first backup pad 131 and second backup pad 132 is stronger, in order to further reduce the probability that bearing structure 13 takes place deformation or fracture.

In one embodiment, the reinforcing ribs 135 may have a plurality, and the plurality of reinforcing ribs 135 may be spaced apart along the first direction X. The first direction X may be the direction in which the third support plate 133 points toward the structural beam 12. By providing a plurality of reinforcing ribs 135 arranged separately, the structural strength of the first support plate 131 and the second support plate 132 can be further improved, so that the carrying capacity of the first support plate 131 and the second support plate 132 is further enhanced, and the probability of deformation or fracture of the support structure 13 is further reduced.

In one embodiment of the present disclosure, the first support plate 131, the second support plate 132, and the reinforcing bars 135 may be in a unitary structure. Namely: the first support plate 131, the second support plate 132 and the reinforcing ribs 135 may be integrally manufactured, so that the connection position between the first support plate 131 and the reinforcing ribs 135 and the connection position between the second support plate 132 and the reinforcing ribs 135 can be reduced, the possibility of breakage between the reinforcing ribs 135 and the first support plate 131 and the second support plate 132 can be reduced, and further, the structural strength of the reinforcing ribs 135 to the first support plate 131 and the structural strength of the second support plate 132 can be improved. But not limited thereto, the first support plate 131, the second support plate 132, and the reinforcing ribs 135 may be of a separate structure, which is also within the scope of the present disclosure.

In one embodiment of the present disclosure, the support structure 13 and the structural beams 12 may be a unitary structure. Namely: the support structure 13 and the structural beams 12 may be manufactured in one piece. With this, the connection position between the support structure 13 and the structural beam 12 can be reduced, so that the probability of fracture between the support structure 13 and the structural beam 12 can be further reduced, and the structural strength and the bearing capacity of the support structure 13 can be further improved.

In one embodiment, the material of the support structure 13 may be a metallic material, for example: the material of the support structure 13 may include, but is not limited to, iron, steel, aluminum, and the like. This arrangement ensures that the support structure 13 has a greater structural strength.

In one embodiment of the present disclosure, referring to fig. 2, 4 and 5, the unit cells 20 may have a length direction Y. The side of the unit cell 20 near the bottom plate 11 may include two second supporting surfaces 22, and the two second supporting surfaces 22 may be respectively located at two sides of the first supporting surface 21 in the length direction Y. The battery case 10 may be provided with two opposite structural beams 12 in the length direction Y. The unit cells 20 may be located between two structural beams 12 opposite in the length direction Y. The support structures 13 may be provided in two, the two support structures 13 may be respectively connected with the two structure beams 12 disposed opposite in the length direction Y, and the two support structures 13 may be respectively abutted with the adjacent second support surfaces 22. So set up, can utilize bearing structure 13 to support single battery 20 in length direction Y's both sides to this atress that can make single battery 20 is more even, improves single battery 20's job stabilization nature. And, such arrangement can also provide stable support to the unit cell 20 by using the two support structures 13 and the bottom plate 11, preventing the unit cell 20 from being displaced during transportation or use of the battery device.

It should be noted that, the two support structures 13 may respectively abut against the adjacent second support surfaces 22, which means that the two support structures 13 may respectively abut against the second support surfaces 22 disposed adjacent to each other.

In one embodiment of the present disclosure, referring to fig. 2 and 5, a side of the battery cell 20 facing away from the base plate 11 may include a third support surface 23 and two fourth support surfaces 24, the two fourth support surfaces 24 may be located at both sides of the third support surface 23 in the length direction Y, respectively, and the fourth support surfaces 24 may be close to the base plate 11 with respect to the third support surface 23. So arranged, the side of the unit cell 20 facing away from the bottom plate 11 can be made to have the same structure as the side of the unit cell 20 near the bottom plate 11, so that the third supporting surface 23 can also be used to abut against the bottom plate 11, and the fourth supporting surface 24 can also be used to abut against the supporting structure 13.

Therefore, when the unit cells 20 are assembled with the supporting structure 13, the front and back directions of the unit cells 20 are not required to be distinguished, namely: when the unit cell 20 is assembled with the support structure 13, the first support surface 21 may abut against the bottom plate 11, the second support surface 22 may abut against the support structure 13, or the third support surface 23 may abut against the bottom plate 11, and the fourth support surface 24 may abut against the support structure 13. The assembly of the battery cells 20 with the support structure 13 can thus be simplified, and it is no longer necessary to identify the front and back of the battery cells 20 before the assembly of the battery cells 20.

In one embodiment of the present disclosure, the first support surface 21 and the second support surface 22 may be smoothly transitioned as shown with reference to fig. 2, 4, and 5. For example: the junction of the first support surface 21 and the second support surface 22 may be rounded, or the junction of the first support surface 21 and the second support surface 22 may be S-shaped, so as to reduce stress concentration at the junction of the first support surface 21 and the second support surface 22, improve structural strength at the junction of the first support surface 21 and the second support surface 22, and reduce the probability of damaging the unit cell 20.

In one embodiment, the third support surface 23 and the fourth support surface 24 may also be joined in a smooth transition. For example: the connection of the third supporting surface 23 and the fourth supporting surface 24 may be rounded, or the connection of the third supporting surface 23 and the fourth supporting surface 24 may be S-shaped, so that stress concentration at the connection of the third supporting surface 23 and the fourth supporting surface 24 can be reduced, structural strength at the connection of the third supporting surface 23 and the fourth supporting surface 24 is improved, and the probability of damage to the single battery 20 is reduced.

Referring to fig. 2, 4 and 5, the unit cell 20 may also have a height direction Z and a thickness direction W. The battery cell 20 may include a battery case 25 and an electric core. The battery cell is a unit formed by winding or laminating a stacking part, and the stacking part comprises a first electrode, a separator and a second electrode. When the first electrode is a positive electrode, the second electrode is a negative electrode. Wherein the polarities of the first electrode and the second electrode are interchangeable. The cells may be disposed within a battery housing 25.

The battery housing 25 may include two opposing first surfaces 26, two opposing second surfaces 27, and two opposing third surfaces 28. The opposite second surfaces 27 are located on the side of the battery case 25 close to the bottom plate 11 and the side remote from the bottom plate 11, respectively. And, one of the second surfaces 27 includes the first and second support surfaces 21 and 22, and the other second surface 27 includes the third and fourth support surfaces 23 and 24.

In one embodiment, one second surface 27 may be formed by the first support surface 21 and the second support surface 22, and the other second surface 27 may be formed by the third support surface 23 and the fourth support surface 24.

In the battery case 25, the opposite two first surfaces 26 may be perpendicular to the thickness direction W, and the opposite second surfaces 27 may be perpendicular to the height direction Z, that is: the first, second, third and fourth support surfaces 21, 22, 23, 24 may be perpendicular to the height direction Z, and the opposite two third surfaces 28 may be perpendicular to the length direction Y.

In one embodiment, the area of the first surface 26 is greater than the area of the second surface 27, and the area of the second surface 27 is greater than the area of the third surface 28. With this structure of the battery case 25, the space utilization of the battery case 10 can be improved, and the energy density of the battery device can be improved.

The material of the battery case 25 may be a metal material, for example: steel, aluminum, etc. The battery case 25 may be of an integrally formed structure, that is: the two first surfaces 26, the two second surfaces 27 and the two third surfaces 28 can be integrally manufactured, so that the connection position of the battery shell 25 can be reduced while the greater structural strength of the battery shell 25 is ensured, the possibility of cracking at the connection position can be reduced, and the metal shell can be ensured to have better tightness to the battery cell. But is not limited thereto, the battery case 25 may be a separate structure, which is also within the scope of the present disclosure.

In one embodiment, the battery cell 20 may further include: and a battery post 29. The battery post 29 may be disposed on the first surface 26 or the third surface 28 of the battery case 25. The battery post 29 may be electrically connected with the battery cell to form the positive and negative electrodes of the unit battery 20.

In one embodiment, there may be two battery poles 29, and both battery poles 29 may be located on the same first surface 26, so as to save space occupied by the battery case 10 by the unit battery 20, thereby improving space utilization of the battery case 10 and improving energy density of the battery device.

But not limited thereto, two battery poles 29 may also be respectively located on the opposite two first surfaces 26, or one of the battery poles 29 is located on the first surface 26, the other battery pole 29 is located on the third surface 28, or two battery poles 29 may be respectively located on the opposite two third surfaces 28.

In one embodiment of the present disclosure, the first surfaces 26 of two adjacent cells 20 may be disposed opposite one another among the plurality of cells 20. By this arrangement, the space utilization of the battery box 10 can be further improved, and the energy density of the battery device can be further improved.

In one embodiment, the battery device may include a battery pack, and may further include other necessary components and compositions, which may be correspondingly supplemented by those skilled in the art according to the specific usage requirements of the battery device, and will not be described herein.

The terms "parallel" and "perpendicular" as used herein are not intended to be entirely parallel, perpendicular, but rather are subject to certain errors; for example, the included angle between the two is greater than or equal to 0 ° and less than or equal to 5 °, i.e. the two are considered to be parallel to each other; the included angle between the two is more than or equal to 85 degrees and less than or equal to 95 degrees, namely the two are considered to be mutually perpendicular.

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 (11)

1. A battery device, characterized by comprising:

the battery box (10) comprises a bottom plate (11), a structural beam (12) and a supporting structure (13), wherein an accommodating space (14) is formed by the bottom plate (11) and the structural beam (12), and the supporting structure (13) is positioned in the accommodating space (14) and is connected with the structural beam (12);

the plurality of single cells (20) set up in accommodation space (14), single cell (20) be close to one side of bottom plate (11) includes first holding surface (21) and second holding surface (22), second holding surface (22) for first holding surface (21) keep away from bottom plate (11), and first holding surface (21) are close to for second holding surface (22) structural beam (12), first holding surface (21) with bottom plate (11) are supported and are leaned on, second holding surface (22) with supporting structure (13) are kept away from the one side of bottom plate (11) is supported and is leaned on.

2. The battery device according to claim 1, wherein a face of the bottom plate (11) adjacent to the unit cells (20) is a plane.

3. The battery device according to claim 2, characterized in that a face of the support structure (13) adjacent to the base plate (11) abuts against the base plate (11).

4. A battery device according to claim 3, characterized in that the support structure (13) comprises:

a first support plate (131), a second support plate (132) and a third support plate (133), wherein a space (134) is arranged between the first support plate (131) and the second support plate (132), one end of the first support plate (131) and one end of the second support plate (132) are connected with the structural beam (12), and the third support plate (133) is connected with one end of the first support plate (131) away from the structural beam (12) and one end of the second support plate (132) away from the structural beam (12);

wherein the first support plate (131) abuts against the bottom plate (11), and the second support plate (132) abuts against the second support surface (22).

5. The battery device according to claim 4, characterized in that the support structure (13) further comprises:

at least one reinforcing rib (135) is disposed in the space (134) and connected to the first support plate (131) and the second support plate (132).

6. The battery device according to claim 4 or 5, characterized in that a heat exchange flow channel (111) is provided in the bottom plate (11), the heat exchange flow channel (111) being used for transporting a heat exchange medium.

7. The battery device according to claim 6, wherein the space (134) communicates with the heat exchange flow passage (111).

8. The battery device according to any one of claims 1 to 5, characterized in that the support structure (13) is of integral construction with the structural beam (12).

9. The battery device according to any one of claims 1 to 5, wherein the unit cell (20) has a length direction, and a side of the unit cell (20) close to the bottom plate (11) includes two second support surfaces (22), and the two second support surfaces (22) are respectively located at two sides of the first support surface (21) in the length direction;

the battery box (10) is provided with two opposite structural beams (12) in the length direction, and the single battery (20) is positioned between the two opposite structural beams (12) in the length direction; the support structures (13) are arranged in two, the two support structures (13) are respectively connected with the two structure beams (12) opposite to each other in the length direction, and the two support structures (13) are respectively abutted against the adjacent second support surfaces (22).

10. Battery device according to claim 9, characterized in that the side of the battery cell (20) facing away from the base plate (11) comprises a third support surface (23) and two fourth support surfaces (24), the two fourth support surfaces (24) being located on both sides of the third support surface (23) in the length direction, respectively, and the fourth support surfaces (24) being close to the base plate (11) with respect to the third support surface (23).

11. The battery device according to any one of claims 1 to 5, characterized in that the first support surface (21) and the second support surface (22) are in a smooth transition.