CN216773427U - Battery device - Google Patents

Abstract

The utility model relates to the technical field of batteries and provides a battery device. The battery device includes: a battery case; a battery carrier; the reinforcement, and battery holds carrier is bilayer structure at least, the reinforcement set up in the battery case with between the upper surface that the battery held the carrier, be used for fixing the battery hold the carrier with the battery case. This battery device, battery box play hold the effect of holding and protecting to battery carrier, and battery carrier is used for bearing the weight of the battery, guarantees the bearing effect to the battery. Through be provided with the reinforcement between battery box and battery carrier, the reinforcement compensaties the thickness that battery carrier and battery box contacted position mutually, the reinforcement plays and holds the effect of carrier local thickening to the battery, the battery carries the condition that appears warping when reducing thinner battery carrier and battery box and fixing, guarantees that the battery holds the fixed effect between carrier and the battery box to improve the structural stability and the reliability of whole battery device.

Description

Battery device

Technical Field

The utility model relates to the technical field of batteries, in particular to a battery device.

Background

In the related art, a battery device includes a battery case and a carrier for carrying a battery. The thickness of battery box is generally than thicker, and the quality is great simultaneously, and occupation space is great, and in order to improve space utilization, the thickness that holds carrier is thinner, but when holding carrier and battery box and fixing, the problem of deformation appears easily in the junction between carrier and the battery box, influences whole battery device's reliability.

SUMMERY OF THE UTILITY MODEL

The utility model provides a battery device, which improves connection stability to improve the performance of the battery device.

According to a first aspect of the present invention, there is provided a battery device comprising:

a battery case;

a battery carrier;

the reinforcing member, with battery holds the thing and is bilayer structure at least, the reinforcing member set up in the battery case with battery holds between the thing, be used for fixed battery holds the thing with the battery case.

According to the battery device provided by the utility model, the battery box has the functions of accommodating and protecting the battery bearing piece, and the battery bearing piece is used for bearing the battery, so that the bearing effect of the battery is ensured. Carry the carrier through reinforcement and battery and be bilayer structure at least, be provided with the reinforcement between battery box and battery carrier, the reinforcement can compensate the thickness that battery carrier and battery box contacted position mutually, the reinforcement plays and carries the effect of local thickening to battery carrier, it holds the condition that the battery carrier appears warping when fixing to reduce thinner battery carrier and battery box, guarantee that the battery carries the fixed effect between carrier and the battery box, thereby improve the structural stability and the reliability of whole battery device.

Drawings

For a better understanding of the present disclosure, reference may be made to the embodiments illustrated in the following drawings. The components in the drawings are not necessarily to scale, and related elements may be omitted in order to emphasize and clearly illustrate the technical features of the present disclosure. In addition, the relevant elements or components may be arranged differently as is known in the art. Further, in the drawings, like reference characters designate the same or similar parts throughout the several views. Wherein:

fig. 1 is a schematic structural diagram of a battery device provided in this embodiment;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

fig. 3 is a partial sectional view of a battery device provided in the present embodiment;

fig. 4 is a schematic structural view of a display reinforcement of a battery device according to the present embodiment;

fig. 5 is a first schematic structural diagram of a clamping structure of a fastener in a battery device according to this embodiment;

fig. 6 is a second schematic structural diagram of a clamping structure of a fastener in a battery device according to this embodiment;

fig. 7 is a third schematic structural diagram of a clamping structure of a fastener in a battery device according to this embodiment;

fig. 8 is a fourth schematic structural diagram of a clamping structure of a fastener in a battery device according to this embodiment;

fig. 9 is a fifth structural schematic diagram of a clamping structure of a fastener in a battery device according to this embodiment.

The reference numerals are explained below:

1. a battery box; 2. a battery carrier; 3. a reinforcement; 4. a gasket;

11. a frame; 111. a third connection hole; 12. a base plate assembly;

21. a support plate; 211. a limiting groove; 212. a reinforcing portion; 213. a first connection hole; 22. a battery holder; 221. supporting ribs; 222. a containing groove; 223. a through hole; 23. an exhaust passage;

31. a second connection hole; 32. a clamping structure; 321. clamping convex; 322. a clamping groove.

Detailed Description

The technical solutions in the exemplary embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the exemplary embodiments of the present disclosure. The example embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the present disclosure, and it is, therefore, to be understood that various modifications and changes may be made to the example embodiments without departing from the scope of the present disclosure.

In the description of the present disclosure, unless otherwise explicitly specified or limited, the terms "first", "second", and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more; the term "and/or" includes any and all combinations of one or more of the associated listed items. In particular, reference to "the" object or "an" object is also intended to mean one of many such objects possible.

The terms "connected," "secured," and the like are to be construed broadly and unless otherwise stated or indicated, and for example, "connected" may be a fixed connection, a removable connection, an integral connection, an electrical connection, or a signal connection; "connected" may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present disclosure can be understood by those skilled in the art as the case may be.

Further, in the description of the present disclosure, it is to be understood that the directional words "upper", "lower", "inner", "outer", etc., which are described in the exemplary embodiments of the present disclosure, are described at the angles shown in the drawings, and should not be construed as limiting the exemplary embodiments of the present disclosure. It will also be understood that, in this context, when an element or feature is referred to as being "on", "under", or "inner", "outer" with respect to another element(s), it can be directly on "," under ", or" inner "," outer "with respect to the other element(s), or indirectly on", "under", or "inner", "outer" with respect to the other element(s) via intervening elements.

The embodiment provides a battery device, and the battery device can be a battery module or a battery pack and is suitable for charging and discharging devices such as hybrid electric vehicles and pure electric vehicles. As shown in fig. 1, the battery device includes a battery box 1 and a battery (not shown in the figure), the battery can be disposed inside the battery box 1, the battery box 1 plays a role of accommodating the battery, or the battery box 1 is disposed around the battery, and the battery box 1 plays a role of protecting the battery.

Among them, a battery includes a cell and an electrolyte, and a minimum unit capable of performing an electrochemical reaction such as charge/discharge. The battery cell refers to a unit formed by winding or laminating a stack including 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 can be interchanged.

It should be noted that the battery includes, but is not limited to, a cylindrical battery, and the battery provided in this embodiment may be specifically a cylindrical battery.

In one aspect of the present embodiment, as shown in fig. 2, the battery device further includes a battery carrier 2, the battery carrier 2 is disposed in the battery box 1, and the battery carrier 2 is used for carrying a battery, so as to ensure a carrying effect on the battery. Meanwhile, when the battery box 1 is impacted by external force, the battery bearing part 2 realizes the isolation between the battery and the battery box 1 to a certain extent, the buffering of the battery is realized, the large rigid collision between the battery and the battery box 1 is avoided, and the effective protection of the battery is realized.

The thickness of current battery box 1 is generally than thicker, and the quality is great simultaneously, and occupation space is great, if the thickness that battery carried thing 2 is thinner, when battery carried thing 2 and battery box 1 carries out the fixing, has the problem that the junction warp between battery carried thing 2 and the battery box 1. In order to solve this problem, the battery device further includes a reinforcing member 3, the reinforcing member 3 and the battery carrier 2 are at least of a double-layer structure, and the reinforcing member 3 is provided between the battery case 1 and the upper surface of the battery carrier 2 for fixing the battery carrier 2 and the battery case 1.

It should be noted that the stacking direction among the reinforcing member 3, the battery case 1, and the battery carrier 2 is a vertical direction, i.e., a height direction of the battery case 1, or an extending direction of the battery.

The battery device that this embodiment provided, bear parts 2 through reinforcement 3 and battery and be bilayer structure at least, be provided with reinforcement 3 between battery box 1 and battery bear parts 2, reinforcement 3 is used for remedying the thickness that battery bears parts 2 and battery box 1 position of contact, reinforcement 3 plays the effect of bearing parts 2 local thickening to the battery, reduce the condition that battery bears parts 2 and appears warping when battery box 1 fixes in the thinner battery bears parts 2, guarantee the fixed effect between battery bears parts 2 and battery box 1, thereby improve whole battery device's structural stability and reliability.

The battery case 1, the battery carrier 2, and the reinforcing member 3 will be described in detail below.

As shown in fig. 2, the battery box 1 includes a bottom plate assembly 12, and the bottom plate assembly 12 is used for carrying the battery carrier 2. Specifically, the bottom plate assembly 12 includes a bottom plate on which the battery carrier 2 is disposed, and the bottom plate is used for carrying the battery carrier 2.

In one aspect of this embodiment, as shown in fig. 2, the battery box 1 further includes a frame 11, the frame 11 is disposed on the bottom plate assembly 12, the frame 11 is disposed around the battery carrier 2, the bottom of the frame 11 is connected to the battery carrier 2 through the stiffener 3, and the frame 11 plays a role in protecting the battery carrier 2 and the battery from side impact.

In one aspect of the present embodiment, as shown in fig. 2, the battery carrier 2 includes a supporting plate 21, the supporting plate 21 is used for carrying a battery, the supporting plate 21 is disposed on the bottom protection plate, the supporting plate 21 is connected to the frame 11 of the battery box 1 through the reinforcing member 3, and the reinforcing member 3 plays a role of intermediate connection between the supporting plate 21 and the frame 11 of the battery box 1, so as to ensure that the supporting plate 21 and the battery box 1 form an integral structure and the fixing effect is good.

The support plate 21 is made of sheet metal, so that the structure is simple, the production process is simplified, and the production cost is low. The thickness of the supporting plate 21 is d, wherein d is more than or equal to 0.5mm and less than or equal to 2 mm. The thickness of the support plate 21 is thin, so that the occupied space in the battery box 1 is reduced, the weight is light, and the requirement of light weight is met.

It should be particularly noted that, because the support plate 21 is made of a metal plate material, the support plate 21 is a metal plate with uniform thickness, the support plate 21 cannot be directly made into a locally thickened structure, the reinforcement 3 can only be arranged on the support plate 21 alone, the function of locally thickening the support plate 21 is realized, or the edge of the support plate 21 is bent upwards or downwards to form the reinforcement 3, at this time, the support plate 21 and the reinforcement 3 are integrally formed, but both are of a double-layer structure, and the function of locally thickening the edge of the support plate 21 is realized.

In one aspect of the present embodiment, the battery device further includes a connector connected to the support plate 21, the reinforcement 3, and the battery case 1 using an FDS process.

The FDS process is a spin tapping and riveting process, and the support plate 21 and the frame 11 of the battery box 1 are connected to each other. The spin tapping-riveting process is a cold forming process of tapping-riveting after thermally deforming the support plate 21 or the battery case 1 by high-speed rotation. The use of this riveting process aims at first a lower tapping rotational torque due to the heat generated by the rotational friction during the joining process; secondly, the larger thread contact surface can generate larger screwing torque; third, it has good air tightness.

It should be noted that, since the spin-tapping riveting process is adopted, if the thickness of the support plate 21 is relatively thin, a problem of deformation is likely to occur when the support plate 21 and the bezel 11 are coupled.

Specifically, the support plate 21 is provided with a first connection hole 213, the reinforcement member 3 is provided with a second connection hole 31 corresponding to the first connection hole 213, the battery box 1 is provided with a third connection hole 111 corresponding to the first connection hole 213, and the connection member is correspondingly inserted through the first connection hole 213, the second connection hole 31 and the third connection hole 111. Wherein, the connecting piece specifically can be screw, bolt and rivet etc. if the connecting piece is screw or bolt, at least one in first connecting hole 213, second connecting hole 31 and the third connecting hole 111 is the screw hole, adopts threaded connection's mode, and the connection effect is good, and is convenient for install and dismantle, makes things convenient for later maintenance. If the connecting member is a rivet, the first connecting hole 213, the second connecting hole 31 and the third connecting hole 111 may have a through-hole or threaded hole structure.

In one aspect of the present embodiment, as shown in fig. 2, the battery carrier 2 further includes a battery bracket 22, and the battery bracket 22 has a rectangular plate-shaped structure, a neat structure, and an attractive appearance. The battery may be disposed directly on the surface of the battery carrier 22, and the battery carrier 22 achieves a support effect for the battery. The battery holder 22 may be made of a plastic material, and has a light weight, and the battery holder 22 may be insulated from the battery. Battery bracket 22 can also adopt the metal material to make, and support intensity is good, and battery bracket 22 is close to one side of battery and is provided with insulating coating, and insulating coating sets up between battery bracket 22 and the battery, plays isolation and insulating effect.

Specifically, the battery bracket 22 is disposed in the battery box 1 and fixed to the battery box 1 to ensure positional stability of the battery bracket 22. The battery bracket 22 and the battery box 1 can be connected by welding, so that the process is simple and the production cost is low. Specifically, the outer shape of the battery bracket 22 is similar to a rectangular parallelepiped structure, and the four side edges of the battery bracket 22 are respectively connected to the side walls of the battery case 1, i.e., the weld formed between the battery bracket 22 and the battery case 1 is similar to a rectangular structure.

In one aspect of the present embodiment, the battery bracket 22 is disposed on the support plate 21 at a side away from the reinforcement 3, that is, the battery bracket 22 is disposed above the support plate 21, the battery is directly supported by the battery bracket 22, and the support plate 21 is disposed between the battery bracket 22 and the battery box 1, so that the support plate 21 provides a certain supporting strength for the battery bracket 22, and the supporting effect is further improved.

In particular, the battery bracket 22 is located above the support plate 21, i.e. from top to bottom along the extending direction of the battery, and respectively includes the frame 11 of the battery box 1, the battery bracket 22, the support plate 21 and the bottom plate assembly 12 of the battery box 1.

It should be noted that the battery carrier 2 may be only the support plate 21, and only the support plate 21 is used to carry the battery; the battery carrier 2 may be only the battery bracket 22, and only the battery bracket 22 is used for carrying the battery; the battery carrier 2 may also have both the support plate 21 and the battery bracket 22, the battery bracket 22 carries the battery, and the support plate 21 carries both the battery bracket 22 and the battery, which are all within the protection scope of the present embodiment.

In order to further ensure the bearing effect of the battery, as shown in fig. 2, a containing groove 222 is provided on the battery bracket 22, the containing groove 222 is used for containing the battery, the containing groove 222 provides a containing space for the battery, and compared with the mode that the battery is arranged on the surface of the battery bracket 22, the side wall of the containing groove 222 realizes the limitation of the battery, thereby avoiding the situation that the battery is toppled over and ensuring the stability of the battery. By placing the battery in the accommodating groove 222, the bottom of the accommodating groove 222 can provide a certain supporting force for the bottom of the battery, the supporting force for the battery is relatively large, and the supporting effect of the battery is ensured.

If the accommodating groove 222 is opened only at the opening end, the thermal runaway heat of the battery can be discharged only from the notch of the accommodating groove 222, and the heat dissipation effect is poor. To solve this problem, a through hole 223 is provided in the receiving groove 222. Through being provided with through-hole 223 in storage tank 222, make storage tank 222 no longer for only the open structure of notch, through-hole 223 is as opening the structure, and through-hole 223 provides the passageway of pressure release, and the heat that battery thermal runaway produced can be discharged through-hole 223.

The opening position of the through hole 223 may be set on a groove wall of the receiving groove 222, and the surface area of the groove wall is relatively large, so that the flexibility of the opening position of the through hole 223 is large. The opening position of the through hole 223 may be disposed at the bottom of the receiving groove 222. If the through hole 223 is arranged at the bottom of the accommodating groove 222, the through hole 223 is just opposite to the battery explosion-proof valve at the bottom of the battery, the battery explosion-proof valve and the through hole 223 can be directly butted, so that the thermal runaway heat of the battery directly enters the through hole 223, the thermal runaway heat transfer path is linear, and compared with the zigzag broken line path, the linear path is more favorable for the discharge of the thermal runaway heat.

It can be understood that the number of the accommodating grooves 222 is plural, the plurality of accommodating grooves 222 are accommodated in the plurality of batteries in a one-to-one correspondence, and the plurality of accommodating grooves 222 are provided with the plurality of through holes 223 in a one-to-one correspondence. The plurality of receiving grooves 222 are arranged according to a certain rule, and the arrangement rule is not a general rectangular array arrangement, that is, the receiving grooves 222 in two adjacent rows are not arranged right side by side, but arranged in a staggered manner. By adopting the mode, the space is fully utilized to the maximum extent, the space utilization rate is higher, the number of the batteries which can be accommodated in the limited space is larger, and the energy density of the battery device is improved.

In one aspect of the present embodiment, as shown in fig. 2 to 3, one of the sides of the support plate 21 and the battery bracket 22 adjacent to each other is provided with a support rib 221, and the other is provided with a stopper groove 211, and the stopper groove 211 is used for the stopper of the support rib 221. By providing the support rib 221 on one of the sides where the support plate 21 and the battery bracket 22 are close to each other, the support strength of the support plate 21 to the battery bracket 22 is ensured by the support rib 221. Be provided with spacing groove 211 through corresponding brace rod 221, when spacing groove 211 provides accommodation space for brace rod 221, still realize spacing to brace rod 221 for great offset can not appear between the two in backup pad 21 and battery bracket 22, guarantee the stability of both relative positions.

The supporting ribs 221 and the limiting grooves 211 can be connected in a welding mode, and the supporting ribs 221 can be bonded on the inner walls of the limiting grooves 211. Specifically, the supporting ribs 221 and the limiting grooves 211 are bonded through structural adhesive, glue solution, foam double-faced adhesive tape and the like, so that the structure is simple, and the process is convenient. In addition, the bonding position between the support rib 221 and the limiting groove 211 may be a bottom wall or a side wall of the limiting groove 211, and the embodiment does not specifically limit the specific position and the specific manner of bonding.

It should be noted that, the number of the support ribs 221 and the limiting grooves 211 is plural, the plurality of support ribs 221 are arranged in parallel at intervals, the plurality of limiting grooves 211 are arranged in parallel at intervals, and the plurality of support ribs 221 and the plurality of limiting grooves 211 are correspondingly arranged, so that the support plate 21 and the battery bracket 22 are supported by the plurality of support ribs 221, the risk of deviation is reduced, and the balance of the battery bracket 22 is ensured.

Due to the support ribs 221, the exhaust passage 23 is formed between the side of the support plate 21 and the battery bracket 22 close to each other and the adjacent two support ribs 221, corresponding to a certain space between the support plate 21 and the battery bracket 22. In other words, the side where the support plate 21 and the battery bracket 22 are close to each other and the side where the adjacent two support ribs 221 are close to each other constitute four sides of a rectangular parallelepiped space for discharging heat generated by the battery. Specifically, the through hole 223 is communicated with the exhaust channel 23, and the heat generated by the battery is discharged into the exhaust channel 23 through the through hole 223, so that the timeliness of discharging the thermal runaway heat to the exhaust channel 23 is ensured. By adopting the arrangement, the supporting effect, the limiting effect and the heat emission effect can be simultaneously met, the integration of multiple functions is realized, the functionality is strong, multiple parts are not required to be arranged, and the production cost is low.

In one aspect of the present embodiment, the supporting plate 21 is provided with a reinforcing portion 212, and the reinforcing portion 212 is provided between two adjacent limiting grooves 211. By providing the reinforcing portion 212 on the support plate 21, the reinforcing portion 212 functions as a reinforcing rib, and functions to reinforce the structure of the support plate 21, thereby improving the support strength of the support plate 21.

It should be particularly noted that, in the actual processing production, the support plate 21 is equivalent to repeatedly bending the support plate 21 up and down, for example, the support plate 21 is bent downward to form a groove, the groove is the limiting groove 211, the support plate 21 is continuously bent upward to form a protrusion, the protrusion is the reinforcing part 212, the limiting groove 211 and the reinforcing part 212 are arranged at an interval, and a limiting groove 211 is arranged between two adjacent reinforcing parts 212. By adopting the mode, the limit groove 211 and the reinforcing part 212 can be processed simultaneously, the process is simple, and the production cost is low.

In one aspect of this embodiment, as shown in fig. 2-3, the battery device further includes a gasket 4, the gasket 4 is made of a sealing material, and the gasket 4 is disposed between the battery carrier 2, the battery case 1 and the reinforcement 3. Specifically, the support plate 21, the frame 11 of the battery case 1, the reinforcement 3, and the battery bracket 22 are provided around the gasket 4. Wherein the gasket 4 is arranged along the frame 11, the gasket 4 is substantially ring-shaped if the frame 11 is arranged around the battery carrier 2.

Specifically, the sealing gasket 4 is disposed on the supporting plate 21, and the top surface of the sealing gasket 4 abuts against the frame 11, so that the top surface and the bottom surface of the sealing gasket 4 are respectively attached to the frame 11 and the supporting plate 21, thereby achieving sealing between the frame 11 and the supporting plate 21. Simultaneously, sealed 4 that fill up sets up between battery bracket 22 and reinforcement 3, realize the isolated between battery bracket 22 and the reinforcement 3, avoid external steam to get into, it is sealed effectual.

It is understood that the reinforcement 3 is made of metal, and the reinforcement 3 may also be referred to as a metal sealing block, and can also play a role of sealing to a certain extent. Through sealed 4 that fill up and set up in the reinforcement 3 and be close to one side of battery tray 22, sealed 4 plays further sealed effect, realizes double seal, and is sealed effectual.

The orthographic projection of the reinforcing member 3 to the battery carrier 2 is equal to or less than the orthographic projection of the frame 11 to the battery carrier 2, that is, the projected area of the reinforcing member 3 relative to the battery carrier 2 is equal to or less than the projected area of the frame 11 relative to the battery carrier 2. In other words, the reinforcing member 3 is not directly attached to the battery carrier 2 completely by one whole flat plate structure, but the reinforcing member 3 is only arranged along the size of the frame 11, that is, the reinforcing member 3 is a strip-shaped structure and arranged around the battery carrier 2, and is only equivalent to structurally reinforcing the edge of the battery carrier 2.

It should be noted that, as shown in fig. 4, the reinforcing members 3 may be integrally formed and directly disposed on the supporting plate 21, or a plurality of reinforcing members 3 may be provided, and the reinforcing members 3 are formed in a split structure, so as to facilitate transportation and installation. A plurality of reinforcing members 3 are provided around the battery carrier 2 to locally reinforce the edge joints of the support plate 21.

In one aspect of this embodiment, as shown in fig. 5-9, two adjacent stiffeners 3 are connected by a snap-fit structure 32. Utilize joint structure 32 to realize the installation and the dismantlement between two adjacent reinforcements 3, when one of them reinforcement 3 appears damaging, need not whole change, the follow-up maintenance of being convenient for reduces the maintenance cost.

Specifically, one of the two adjacent reinforcing members 3 is provided with a clamping protrusion 321, the other one is provided with a clamping groove 322, and the clamping protrusion 321 is clamped in the clamping groove 322 to form the clamping structure 32. Adopt protruding 321 of card and the mutual cooperation of draw-in groove 322, the joint is effectual, when guaranteeing that two adjacent reinforcements 3 connect stably, can also realize the detachable function.

The cross sections of the locking protrusion 321 and the locking groove 322 are respectively any one of other polygons, such as an L-shape (shown in fig. 5-6), an arc-shape (shown in fig. 7), a T-shape (shown in fig. 8), an S-shape (shown in fig. 9), a rectangle, a triangle, and the like. The cross-sectional shapes of the locking protrusion 321 and the locking groove 322 are not limited in this embodiment, and are within the protection scope of this embodiment as long as the locking function can be achieved.

For example, as shown in fig. 5, the length direction of the support plate 21 is defined as an X direction, and the width direction of the support plate 21 is defined as a Y direction, wherein the X direction and the Y direction are perpendicular to each other. The reinforcing member 3 that the definition extends along the Y is first reinforcing member, and the reinforcing member 3 that extends along the X is the second reinforcing member, and when the cross section of card arch 321 and draw-in groove 322 was L shape, if first reinforcing member moved along the Y to the direction of keeping away from the second reinforcing member, the card arch 321 can be spacing by draw-in groove 322 along the part of X to, avoids along the Y to great offset to appearing. Correspondingly, if the second reinforcement member moves in the direction away from the first reinforcement member along the X direction, the portion of the snap projection 321 along the X direction will limit the first reinforcement member, and avoid a large position deviation along the Y direction.

In one aspect of the present embodiment, welding, bonding, screwing, and the like may be adopted between two adjacent reinforcing members 3, and the connection manner between two adjacent reinforcing members 3 is not limited in the present embodiment, as long as the connection can be achieved, and all the connection manners are within the protection scope of the present embodiment.

It should be noted that, for other structures of the battery device in this embodiment, reference may be made to the structure of the battery device in the above embodiment, which is not described herein again.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the utility model disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the utility model 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 example embodiments be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (12)

1. A battery device, comprising:

a battery case (1);

a battery carrier (2);

a reinforcement (3), and the battery carrier (2) is at least a double-layer structure, the reinforcement (3) is arranged between the battery box (1) and the upper surface of the battery carrier (2) for fixing the battery carrier (2) and the battery box (1).

2. Battery device according to claim 1, characterized in that the battery carrier (2) comprises a support plate (21), which support plate (21) is connected to the battery box (1) by means of the reinforcement (3).

3. The battery device according to claim 2, wherein the support plate (21) has a thickness d, wherein d is 0.5mm ≦ 2 mm.

4. Battery device according to claim 2, characterized in that the battery carrier (2) further comprises a battery bracket (22), which battery bracket (22) is arranged on the side of the support plate (21) remote from the reinforcement (3).

5. The battery device according to claim 4, wherein one of the sides of the support plate (21) and the battery bracket (22) adjacent to each other is provided with a support rib (221), and the other side is provided with a limit groove (211), and the limit groove (211) is used for limiting the support rib (221).

6. The battery device according to claim 5, wherein a reinforcing part (212) is arranged on the support plate (21), and the reinforcing part (212) is arranged between two adjacent limiting grooves (211).

7. The battery device according to claim 2, further comprising a connector connected to the support plate (21), the reinforcement member (3) and the battery case (1) using an FDS process.

8. The battery device according to claim 2, wherein the support plate (21) is made of a sheet metal material.

9. Battery device according to one of claims 1 to 8, characterized in that the battery box (1) comprises a frame (11), the frame (11) being arranged around the battery carrier (2), the bottom of the frame (11) being connected to the battery carrier (2) by means of the reinforcement (3).

10. Battery device according to claim 9, characterized in that the reinforcement (3) is less than or equal to the rim (11) in an orthographic projection towards the battery carrier (2).

11. The battery device according to any one of claims 1 to 8, characterized in that the number of the reinforcing members (3) is multiple, a plurality of the reinforcing members (3) are arranged around the battery carrier (2), and two adjacent reinforcing members (3) are connected through a clamping structure (32).

12. The battery device according to any one of claims 1 to 8, further comprising a battery disposed on the battery carrier (2), the battery being a cylindrical battery.

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