CN215816139U

CN215816139U - Battery box and battery

Info

Publication number: CN215816139U
Application number: CN202121458586.8U
Authority: CN
Inventors: 伊恩多
Original assignee: Evergrande New Energy Technology Shenzhen Co Ltd
Current assignee: Evergrande New Energy Technology Shenzhen Co Ltd
Priority date: 2021-06-29
Filing date: 2021-06-29
Publication date: 2022-02-11
Anticipated expiration: 2031-06-29

Abstract

The utility model relates to the technical field of battery shock absorption, and particularly discloses a battery box and a battery. The battery box comprises a box body and a damping component. Damping component installs in the box, and damping component includes first insulating plate, first elastic component and second elastic component, and first elastic component sets up in the top of first insulating plate, and the top of first elastic component is used for bearing battery module, and the top of second elastic component sets up in the below of first insulating plate, and the bottom of second elastic component sets up on the interior diapire of box. The battery comprises a battery module and the battery box, and the battery module is arranged in the battery box. Because first elastic component and the second elastic component among the damper assembly are located the upper and lower both sides of first insulating plate respectively for damper assembly has formed two-stage shock-absorbing structure at the box, and first elastic component and second elastic component can absorb the vibration energy of electric core module in proper order, have realized good buffering cushioning effect, have improved the stability of battery module.

Description

Battery box and battery

Technical Field

The utility model belongs to the technical field of battery shock absorption, and particularly relates to a battery box and a battery.

Background

Among the current battery, the shock attenuation to electric core module is realized to coating heat conduction structure glue between electric core module and the battery box. Or, install the spring additional between the inner wall of battery module and battery box, realize the one-level buffering of battery module. When the automobile vibrates violently or shakes, the damping performance of the spring can be exceeded, and the battery module and the inner wall of the battery box are in hard collision. Above-mentioned both mounting methods all are difficult to satisfy the safety requirement to the shock attenuation effect of electric core module, can not realize higher quality shock attenuation protection to the battery module.

Therefore, a battery box and a battery are needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

One object of the present invention is to provide a battery box, in which a two-stage damping structure is formed in the battery box to improve the stability of a battery module.

Another object of the present invention is to provide a battery, in which a two-stage damping structure is formed in a battery case to improve the stability of a battery module.

In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:

a battery case, comprising: box and damper, damper install in the box, damper includes first insulation board, first elastic component and second elastic component, first elastic component set up in the top of first insulation board, the top of first elastic component is used for bearing battery module, the top of second elastic component set up in the below of first insulation board, the bottom of second elastic component sets up on the interior diapire of box.

Furthermore, the battery box further comprises a second insulating plate, the first insulating plate and the second insulating plate are arranged in a vertical direction in an up-down opposite mode, and the first elastic piece is clamped between the first insulating plate and the second insulating plate.

Furthermore, the outer edges of the first insulating plate and the second insulating plate are wrapped by anti-collision glue layers.

Furthermore, a primary damping cavity is formed between the first insulating plate and the second insulating plate, and the first elastic piece is located in the primary damping cavity; a secondary damping cavity is formed in front of the bottom wall of the box body and the first insulating plate, the second elastic piece is located in the secondary damping cavity, and the elasticity of the first elastic piece is larger than that of the second elastic piece.

Further, the first elastic member is a spring, and the second elastic member is a rubber block formed by sequentially stacking and bonding a plurality of rubber pads.

Furthermore, the top end and the bottom end of the second elastic piece are respectively connected with the first insulating plate and the bottom wall of the box body in an adhesive mode.

Further, the battery box still includes the guide bar, all set up the bar hole that extends along vertical direction on two relative lateral walls that set up on the box, the guide bar passes the bar hole with first insulating plate is connected.

Further, the guide rod is a bolt, a nut is fixedly arranged on the first insulating plate, and the guide rod is connected to the first insulating plate through the bolt and the nut in a matched mode.

Furthermore, the box body comprises two side plates which are oppositely arranged, a bottom plate and an upper shell which are oppositely arranged up and down, and the side plates, the bottom plate and the upper shell are detachably connected through bolts.

A battery comprises a battery module and the battery box, wherein the battery module is arranged in the battery box.

The utility model has the beneficial effects that:

the battery box provided by the utility model specifically comprises a box body and a damping assembly, wherein a first elastic part and a second elastic part in the damping assembly are respectively positioned at the upper side and the lower side of a first insulating plate, so that the damping assembly forms a two-stage damping structure in the box body, the first elastic part and the second elastic part can sequentially absorb the vibration energy of a battery cell module, a good damping effect is realized, the battery module is prevented from colliding with the box body when the battery vibrates, and the stability of the battery module is improved.

The battery provided by the utility model comprises the battery box, and the first elastic part and the second elastic part can sequentially absorb the vibration energy of the battery core module by forming a two-stage damping structure on the box body, so that a good buffering effect is realized, the battery module is prevented from colliding with the box body when the battery vibrates, and the stability of the battery module is improved.

Drawings

Fig. 1 is a schematic structural diagram of a battery provided in an embodiment of the present invention;

fig. 2 is an exploded view of a battery according to an embodiment of the present invention.

The component names and designations in the drawings are as follows:

10. a battery module; 20. an end plate;

11. a first insulating plate; 12. a second insulating plate; 2. a first elastic member; 3. a second elastic member; 4. a guide bar; 5. a base plate; 6. a side plate; 61. a strip-shaped hole; 7. and (4) an upper shell.

Detailed Description

In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be further noted that, for the convenience of description, only some but not all of the elements associated with the present invention are shown in the drawings.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The technical scheme of the utility model is further explained by the specific implementation mode in combination with the attached drawings.

As shown in fig. 1, the present embodiment discloses a battery. The battery includes a battery module 10 and a battery box, and the battery module 10 is mounted in the battery box.

Specifically, the battery of the present embodiment may be used as a new energy automobile power component, but is not limited thereto. The battery can also be used in other working conditions needing to provide power. In the existing battery, heat conducting structural adhesive is generally coated between the battery module 10 and a box body or a spring is additionally arranged, so that primary buffering of the battery module 10 is realized. When the automobile vibrates violently or shakes, the damping capacity of the spring is possibly exceeded, so that the battery module 10 collides with the inner wall of the battery box, and the damping protection of the battery module 10 cannot be realized.

In order to solve the above problem, as shown in fig. 2, the present embodiment also proposes a battery box, which includes a box body and a shock-absorbing assembly. Damping component installs in the box, and damping component includes first insulating plate 11, first elastic component 2 and second elastic component 3, and first elastic component 2 sets up and is used for bearing battery module 10 on the top of the first elastic component 2 in the top of first insulating plate 11, and the top of second elastic component 3 sets up in the below of first insulating plate 11, and the bottom of second elastic component 3 sets up on the interior diapire of box.

In this embodiment, first elastic component 2 and second elastic component 3 among the damper assembly are located the upper and lower both sides of first insulating plate 11 respectively for damper assembly has formed two-stage shock-absorbing structure in the box, and first elastic component 2 and second elastic component 3 can absorb the vibration energy of electric core module in proper order, have realized good cushioning effect, have avoided battery module 10 and box to bump when the battery vibrates, have improved battery module 10's stability.

Specifically, the box body is a cubic box body, and specifically comprises two oppositely arranged side plates 6, a bottom plate 5 and an upper shell 7 which are oppositely arranged up and down. The upper shell 7 is a U-shaped shell, and the end plates 20 at the two ends of the battery module 10 and the two side plates 6 together enclose the side walls of the box body. The upper ends of the side plates 6 have a stepped structure so that the outer surfaces of the side walls of the upper case 7 are coplanar with the outer surfaces of the side plates 6 after the upper case 7 is snap-fitted to the two side plates 6.

The side plates 6, the bottom plate 5 and the upper shell 7 of the battery box are detachably connected through bolts, so that the battery box is convenient to disassemble, assemble, replace and maintain.

As shown in fig. 2, the battery box further includes a second insulating plate 12, the first insulating plate 11 and the second insulating plate 12 are disposed opposite to each other in the vertical direction, and the first elastic member 2 is sandwiched between the first insulating plate 11 and the second insulating plate 12. First insulating plate 11 and the equal level of second insulating plate 12 set up in the battery box, and first insulating plate 11 is used for bearing battery module 10. Specifically, the upper surface of the second insulating plate 12 is coated with a structural adhesive, and the battery module 10 is bonded to the upper surface of the second insulating plate 12 by the structural adhesive.

A primary damping cavity is formed between the first insulating plate 11 and the second insulating plate 12, and the first elastic element 2 is located in the primary damping cavity. A secondary damping cavity is formed between the first insulating plate 11 and the bottom wall of the box body, and the second elastic piece 3 is located in the secondary damping cavity. The elasticity of the first elastic member 2 of this embodiment is greater than the elasticity of the second elastic member 3, so that the buffering and damping effect of the first damping cavity is greater than that of the second damping cavity, and the two damping cavities form a buffering and damping effect of a gradient configuration.

When the battery slightly vibrates, the second insulating plate 12 moves towards the first insulating plate 11 below, the first elastic element 2 is compressed to store energy, and the vibration energy of the battery module 10 is completely absorbed by the primary damping cavity. When the battery takes place acutely to vibrate, first insulation board 11 and the equal vertical downstream of second insulation board 12, and the displacement that moves that is located second insulation board 12 is greater than the displacement that moves that is located first insulation board 11 for first elastic component 2 and the equal pressurized energy storage of second elastic component 3, with the shock attenuation effect that improves the battery box, avoided battery module 10 and box to bump when the vibration, improved battery module 10's stability.

Preferably, the first elastic member 2 is a spring, and the second elastic member 3 is a rubber block formed by sequentially stacking and bonding a plurality of rubber pads. The damping effect of spring and rubber pad is better, and is with low costs, the installation of being convenient for. Of course, the first elastic member 2 may also be a spring or a rubber block, and it is only necessary to ensure that the elasticity of the first elastic member 2 is greater than that of the second elastic member 3.

The quantity of the first elastic component 2 of this embodiment is a plurality of, and a plurality of first elastic components 2 have increased the buffering shock attenuation effect of one-level shock attenuation chamber, are favorable to protecting the battery. The first elastic elements 2 are uniformly distributed between the first insulating plate 11 and the second insulating plate 12, so that the first insulating plate 11 and the second insulating plate 12 are stressed uniformly. For example, the first insulating plate 11 and the second insulating plate 12 of the present embodiment have the same structure and are rectangular plates, the number of the first elastic elements 2 may be four, and four first elastic elements 2 are distributed at four corner positions of the upper surface of the first insulating plate 11. Alternatively, the plurality of first elastic members 2 are distributed between the first insulating plate 11 and the second insulating plate 12 in an array.

Specifically, the first insulating plate 11 and the second insulating plate 12 are both provided with positioning grooves (not shown), two ends of the first elastic member 2 respectively extend into the corresponding positioning grooves on the two insulating plates, and glue is applied to the positioning grooves, so that the ends of the first elastic member 2 are bonded to the positioning grooves, and the first elastic member 2 is stably mounted.

In other alternative embodiments, two opposite side surfaces between the first insulating plate 11 and the second insulating plate 12 are respectively provided with a circular ring in a protruding manner, and the upper end and the lower end of the first elastic element 2 are respectively connected with the corresponding circular rings in a hanging manner.

The top end and the bottom end of the second elastic element 3 of the embodiment are respectively connected with the first insulating plate 11 and the bottom wall of the box body in an adhering mode. Because second elastic component 3 is by a plurality of rubber pads stack the shaping, consequently can carry out the increase and decrease of rubber pad quantity according to damper assembly's assembly demand to adjust the height of second elastic component 3, thereby adjust the buffering shock attenuation effect of second grade shock attenuation chamber.

Specifically, the thickness of each rubber mat was 0.5 mm. One side of each rubber pad is coated with a glue layer, and any two adjacent rubber pads are adhered together through the glue layer. The rubber pads at the upper and lower ends of the second elastic element 3 are bonded to the lower surface of the first insulating plate 11 and the bottom wall of the box body through glue layers.

It should be noted that the volume of the rubber pad of this embodiment is smaller than the volume of the secondary damping cavity. Therefore, the wiring operation of the battery module 10 can be performed in the secondary buffer chamber to optimize the internal wiring layout of the battery and improve the internal space utilization of the battery box.

In other alternative embodiments, a through hole may be formed in the side plate 6, so that the cable in the secondary damping cavity passes through the through hole and is connected with an external load or connected with other batteries in series and parallel.

In the new energy automobile in-process of traveling, the vibration form of battery uses the longitudinal vibration along vertical direction as the main, for avoiding battery module 10 to control transverse vibration, and the battery box still includes guide bar 4, all sets up the bar hole 61 that extends along vertical direction on two relative lateral walls that set up on the box, and guide bar 4 passes bar hole 61 and links to each other with first insulation board 11. Guide bar 4 slides from top to bottom along vertical direction along with first insulating plate 11 in bar hole 61, has played direction limiting displacement to first insulating plate 11, has avoided first insulating plate 11 to take place to control transversely rock.

In order to simplify the structure of the battery and reduce the number of the guide bars 4, only the first insulating plate 11 is connected with the guide bars 4 in this embodiment. Specifically, first insulating plate 11 is connected with guide bar 4, has seted up two bar holes 61 on two curb plates 6 respectively, and the one end of every guide bar 4 all passes corresponding bar hole 61 and links to each other with first insulating plate 11's side.

Further, the quantity of the guide bar 4 of this embodiment is four, and two guide bars 4 are arranged at two relative sides of the first insulating plate 11 at intervals respectively, so as to avoid the first insulating plate 11 from deflecting when sliding in the strip-shaped hole 61, and damage the stability of the battery module 10.

The guide rod 4 of this embodiment is the bolt, and first insulating plate 11 has set firmly the nut, and guide rod 4 passes through the cooperation of bolt and nut to be connected in first insulating plate 11. Nuts by which bolts are fitted with the first insulating plate 11 may be welded or bonded to the underside of the first insulating plate 11. Simple, convenient and quick installation between the guide rod 4 and the first insulating plate 11 is realized, and the assembly efficiency of the battery is improved.

In other embodiments, the side wall of the first insulating plate 11 is provided with a threaded hole, and the guide rod 4 is installed in cooperation with the threaded hole. Or, the guide rod 4 and the first insulating plate 11 are fixedly connected through clamping.

It should be noted that, there is a clearance between first insulating board 11 and second insulating board 12 and the lateral wall of battery box to avoid first insulating board 11 and second insulating board 12 to take place the friction when sliding from top to bottom with curb plate 6 between, influence damper assembly's buffering shock attenuation effect.

In order to avoid the hard collision between the first insulating plate 11 or the second insulating plate 12 and the side plate 6 of the battery box when the battery generates transverse vibration, the outer edges of the first insulating plate 11 and the second insulating plate 12 of the embodiment are wrapped by anti-collision glue layers, and the buffering and damping effects in the horizontal direction are achieved.

In other embodiments, buffering members such as springs may be additionally installed between the outer edge of the first insulating plate 11 and the side wall of the battery box and between the outer edge of the second insulating plate 12 and the side wall of the battery box, so that the horizontal buffering and damping effects of the damping member can be achieved. The damping component plays a role in buffering and damping the battery module 10 in the vertical direction and the horizontal direction, and the safety performance of the battery is improved.

The foregoing embodiments are merely illustrative of the principles and features of this invention, which is not limited to the above-described embodiments, but rather is susceptible to various changes and modifications without departing from the spirit and scope of the utility model, which changes and modifications are within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A battery box, comprising: box and damper, damper install in the box, damper includes first insulation board, first elastic component and second elastic component, first elastic component set up in the top of first insulation board, the top of first elastic component is used for bearing battery module, the top of second elastic component set up in the below of first insulation board, the bottom of second elastic component sets up on the interior diapire of box.

2. The battery box according to claim 1, further comprising a second insulating plate, wherein the first insulating plate and the second insulating plate are vertically disposed opposite to each other, and the first elastic member is interposed between the first insulating plate and the second insulating plate.

3. The battery box of claim 2, wherein the outer edges of the first insulating plate and the second insulating plate are wrapped with an anti-collision glue layer.

4. The battery box according to claim 2, wherein a primary damping cavity is formed between the first insulating plate and the second insulating plate, and the first elastic member is located in the primary damping cavity; a secondary damping cavity is formed in front of the bottom wall of the box body and the first insulating plate, the second elastic piece is located in the secondary damping cavity, and the elasticity of the first elastic piece is larger than that of the second elastic piece.

5. The battery case according to claim 4, wherein the first elastic member is a spring, and the second elastic member is a rubber block formed by stacking and bonding a plurality of rubber pads in sequence.

6. The battery box according to claim 5, wherein the top end and the bottom end of the second elastic member are respectively bonded to the first insulating plate and the bottom wall of the box body.

7. The battery box according to claim 2, further comprising a guide rod, wherein two opposite side walls of the box body are respectively provided with a strip-shaped hole extending in the vertical direction, and the guide rod penetrates through the strip-shaped holes to be connected with the first insulating plate.

8. The battery box according to claim 7, wherein the guide rod is a bolt, a nut is fixed to the first insulating plate, and the guide rod is connected to the first insulating plate through the fit between the bolt and the nut.

9. The battery box according to any one of claims 1 to 8, wherein the box body comprises two oppositely arranged side plates, a bottom plate and an upper shell, the bottom plate and the upper shell are oppositely arranged up and down, and the side plates, the bottom plate and the upper shell are detachably connected through bolts.

10. A battery comprising a battery module and the battery box according to any one of claims 1 to 9, wherein the battery module is mounted in the battery box.