CN214227039U

CN214227039U - Power battery box

Info

Publication number: CN214227039U
Application number: CN202023144493.6U
Authority: CN
Inventors: 任鹏; 薛平; 高嵩; 陈运爱; 刘铮
Original assignee: Beiqi Foton Motor Co Ltd
Current assignee: Beiqi Foton Motor Co Ltd
Priority date: 2020-12-23
Filing date: 2020-12-23
Publication date: 2021-09-17
Anticipated expiration: 2030-12-23

Abstract

The utility model discloses a power battery box, power battery box includes: a cover plate; the case body, the case body includes bottom plate, skeleton and a plurality of curb plate, the lower extreme of curb plate with the bottom plate links to each other, and is a plurality of the curb plate link to each other in proper order and with the open installation cavity in upper end is injectd to the bottom plate, the skeleton support install in the edges and corners department of installation cavity, the apron rotationally install in the upper end of installation cavity just is used for sealing the upper end of installation cavity, wherein, the structural strength of bottom plate with the structural strength of skeleton all is greater than the structural strength of curb plate, just the structural strength of bottom plate with the structural strength of skeleton all is greater than the structural strength of apron. The utility model discloses power battery box sets up the skeleton through the edges and corners department at the installation cavity to and the use of lightweight material, make power battery box's structure more stable, weight proportion is lower, and the security performance is higher.

Description

Power battery box

Technical Field

The utility model belongs to the technical field of the power battery technique and specifically relates to a power battery box is related to.

Background

In the prior art, the battery pack box is mostly formed by connecting a U-shaped bracket formed by aluminum alloy sections and steel plates in a welding, screwing, bonding and other modes. The battery pack box body is high in weight proportion, a welding seam is prone to cracking, the battery pack is prone to water entering, short circuit is caused, the welding process is high in cost, quality stability is difficult to guarantee, and an improved space exists.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the utility model is to provide a power battery box, power battery box's structure is more stable, and weight proportion is lower.

According to the utility model discloses power battery box, include: a cover plate; the case body, the case body includes bottom plate, skeleton and a plurality of curb plate, the lower extreme of curb plate with the bottom plate links to each other, and is a plurality of the curb plate link to each other in proper order and with the open installation cavity in upper end is injectd to the bottom plate, the skeleton support install in the edges and corners department of installation cavity, the apron rotationally install in the upper end of installation cavity just is used for sealing the upper end of installation cavity, wherein, the structural strength of bottom plate with the structural strength of skeleton all is greater than the structural strength of curb plate, just the structural strength of bottom plate with the structural strength of skeleton all is greater than the structural strength of apron.

According to the utility model discloses power battery box sets up the skeleton and sets up curb plate and apron into using the less and lightweight material of structural strength through the edges and corners department at the installation cavity for the structure of power battery box is more stable, and weight proportion is lower, and the security performance is higher, and manufacturing cost is lower, has enlarged the application scope of power battery box.

According to some embodiments of the present invention, the frame includes a first frame and a second frame, the first frame is supported at the joint of two adjacent side plates, the second frame is supported at the joint of the side plate and the bottom plate, and the first frame and the second frame both include a first plate and a second plate that are connected by bending; wherein, first skeleton first board with adjacent two the lateral surface laminating of one in the curb plate, first skeleton the second board with adjacent two the lateral surface laminating of another in the curb plate, the second skeleton the first board with the lateral surface laminating of curb plate, the second skeleton the second board with the lower surface laminating of bottom plate.

According to the utility model discloses power battery box of some embodiments, the skeleton is made for the steel material, the apron with the curb plate is aluminum alloy material and makes.

According to the utility model discloses power battery box of some embodiments still includes: the mounting seat is installed in the mounting cavity and supported on the upper surface of the bottom plate, two ends of the mounting seat respectively extend to the inner wall surfaces of the two side plates which are oppositely arranged in the side plates to abut against, and the mounting seat is used for mounting the battery module.

According to the utility model discloses power battery box of some embodiments, the mount pad is a plurality of, and is a plurality of parallel spaced apart arrangement of mount pad in the upper surface of bottom plate, just be equipped with first mounting hole on the mount pad, first mounting hole be used for with the battery module links to each other.

According to the utility model discloses power battery box of some embodiments still includes: the bottom support is provided with a second mounting hole used for being connected with the whole vehicle.

According to the utility model discloses power battery box, it is a plurality of arbitrary adjacent two in the curb plate the junction of curb plate the curb plate with the junction of bottom plate is all through sealed cooperation of gluing.

According to the utility model discloses power battery box of some embodiments, the upper surface of bottom plate is equipped with the heat conduction pad, just the medial surface of curb plate with the medial surface of apron all is equipped with the fire blanket.

According to the utility model discloses power battery box of some embodiments, the curb plate is equipped with and is used for the cooling valve port that links to each other with the cooling water route.

According to the utility model discloses power battery box of some embodiments, the curb plate still be equipped with cooling valve port spaced apart electrical connection who arranges, just electrical connection with the cooling valve port is located a plurality of same in the curb plate.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of a front protective linking bracket according to some embodiments of the present invention.

Reference numerals:

the power battery case 100 is provided with a power battery case,

the box comprises a cover plate 1, a box body 2, a bottom plate 21, a framework 22, a first framework 22a, a second framework 22b, a side plate 23, a mounting cavity 24, a mounting seat 3, a first mounting hole 31, a bottom support 4, a cooling valve port 5 and an electric connection joint 6.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, 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 therefore, should not be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

If there is no special description, the front-rear direction in the present invention is the longitudinal direction of the vehicle, i.e., the X direction; the left and right directions are the transverse direction of the vehicle, namely the Y direction; the up-down direction is the vertical direction of the vehicle, i.e., the Z direction.

A power battery case 100 according to an embodiment of the present invention is described below with reference to fig. 1.

As shown in fig. 1, the power battery box 100 according to the embodiment of the present invention includes: a cover plate 1 and a tank body 2.

Apron 1 is installed in case body 2, and apron 1 is used for sealing the upper end of the installation cavity 24 of case body 2, and apron 1 rotationally links to each other with case body 2, is convenient for realize opening and closing of apron 1. It should be noted that, in this embodiment, as shown in fig. 1, the cover plate 1 may be designed to have a structure with a middle portion protruding upwards, so as to increase the volume of the power battery box 100, and the cover plate 1 is convenient to better seal the installation cavity 24, which is beneficial to enhancing the sealing performance of the power battery box 100, and the cover plate 1 is designed to be a low-density aluminum alloy honeycomb plate, so as to reduce the weight of the cover plate 1, and make the light weight effect of the power battery box 100 obvious.

Case body 2 includes bottom plate 21, skeleton 22 and a plurality of curb plate 23, as shown in fig. 1, case body 2 includes 1

bottom plate

21 and 4

curb plates

23 and 4 skeletons 22, the lower extreme and the bottom plate 21 of curb plate 23 link to each other, a plurality of curb plates 23 link to each other in proper order and inject the open installation cavity 24 in upper end with bottom plate 21, skeleton 22 supports the edges and corners department of installing cavity 24 of installing, so that skeleton 22 can strengthen and support two adjacent curb plates 23 simultaneously, and skeleton 22 can strengthen and support bottom plate 21 and the curb plate 23 adjacent with bottom plate 21 simultaneously, avoid two adjacent curb plates 23 and bottom plate 21 and the junction of curb plate 23 to break off, thereby improve case body 2's structural strength.

Wherein, the structural strength of bottom plate 21 and skeleton 22 all are greater than the structural strength of curb plate 23, and the structural strength of bottom plate 21 and skeleton 22 all are greater than apron 1's structural strength, in specific implementation process, bottom plate 21 and skeleton 22 are made by the steel material, structural strength is great, curb plate 23 and apron 1 are made by aluminum alloy material, make the structural strength of bottom plate 21 and skeleton 22's structural strength all be greater than curb plate 23's structural strength and apron 1's structural strength, be convenient for strengthen case body 2's stability and structural strength, be favorable to preventing to drag the problem that the end causes the potential safety hazard to the battery impact among the car operation process.

That is to say, carry out joint support through skeleton 22 in the edges and corners position department of installation cavity 24 in this application, the structural strength of skeleton 22 and bottom plate 21 is all great, with the structural strength of increase case body 2, and all adopt structural strength less with curb plate 23 and apron 1, the material that the quality is lighter is made, do benefit to and reduce holistic weight under the prerequisite of guaranteeing the structural strength of power battery box 100, reduce design cost, the security performance is higher, do benefit to the continuation of the journey mileage that promotes the vehicle, solve power battery's among the prior art potential safety hazard.

According to the utility model discloses power battery box 100 sets up skeleton 22 and sets up curb plate 23 and apron 1 into using the less and lightweight material of structural strength through the edges and corners department at the installation cavity for power battery box 100's structure is more stable, and weight proportion is lower, and the security performance is higher, and manufacturing cost is lower, has enlarged power battery box 100's application scope.

As shown in fig. 1, the framework 22 includes 4

first frameworks

22a and 4 second frameworks 22b, wherein the first frameworks 22a are supported at the joints of two adjacent side plates 23, the second frameworks 22b are supported at the joints of the side plates 23 and the bottom plate 21, and the first frameworks 22a and the second frameworks 22b each include a first plate and a second plate that are connected in a bending manner; the first plate of the first framework 22a is attached to the outer side surface of one of the two adjacent side plates 23, the second plate of the first framework 22a is attached to the outer side surface of the other of the two adjacent side plates 23, the first plate of the second framework 22b is attached to the outer side surfaces of the side plates 23, and the second plate of the second framework 22b is attached to the lower surface of the bottom plate 21. It should be noted that, the framework 22 is designed to be high-strength L-shaped steel, so that the framework 22 has higher structural strength, and meanwhile, the first plate and the second plate of the first framework 22a are respectively attached to the outer side surfaces of the two adjacent side plates 23, and the first plate and the second plate of the second framework 22b are respectively attached to the outer side surfaces of the side plates 23 and the lower surface of the bottom plate 21, so that the sealing performance of the power battery box 100 is enhanced, and meanwhile, the structural strength of the power battery box 100 is enhanced, so that the structure of the power battery box 100 is more stable.

Wherein, skeleton 22 is made for the steel material, apron 1 and curb plate 23 are aluminum alloy material and make, in specific implementation process, skeleton 22 designs for high strength skeleton 22, bottom plate 21 designs for high strength bottom plate 21, make skeleton 22 and bottom plate 21's structural strength great, be convenient for strengthen power battery box 100's structural stability, and simultaneously, apron 1 and box board are aluminum alloy material and make, when guaranteeing that apron 1 and box board have sufficient structural strength, the weight of material has been reduced, make power battery box 100's lightweight effect more obvious.

In some embodiments, the power battery box 100 further includes a mounting seat 3, as shown in fig. 1, the mounting seat 3 is installed in the mounting cavity 24 and supported on the upper surface of the bottom plate 21, and two ends of the mounting seat 3 respectively extend to the inner wall surfaces of two oppositely-arranged side plates 23 of the plurality of side plates 23 to abut against each other, so that the battery module can be mounted on the mounting seat 3, and the stability of the battery module mounting is enhanced.

Like this, mount pad 3 not only can realize the battery module installation and fixed, and mount pad 3 can play fine supporting role to two curb plates 23 that set up relatively, avoids two curb plates 23 that set up relatively to be close to each other towards leading to power battery box 100's overall structure to take place serious deformation, does benefit to the structural stability who improves power battery box 100.

The mount pad 3 is a plurality of, and a plurality of mount pads 3 parallel interval arranges in the upper surface of bottom plate 21, as shown in fig. 1, mount pad 3 is 4, and 4 mount pads 3 all locate the upper surface of bottom plate 21, and parallel to each other between 4 mount pads 3, are equipped with first mounting hole 31 on the mount pad 3, and first mounting hole 31 is used for linking to each other with battery module, and it needs to explain that first mounting hole 31 is adjustable mounting hole, and the first mounting hole 31 of being convenient for links to each other with different battery modules.

As shown in fig. 1, the mounting seats 3 are configured in a strip structure, and each mounting seat 3 is provided with a plurality of first mounting holes 31, the plurality of first mounting holes 31 are arranged at intervals along the length direction of the mounting seat 3, so that the battery module can be fixedly connected with the mounting seat 3 through a plurality of connecting pieces, thereby effectively fixing the battery module and improving the structural stability of the power battery.

The power battery box 100 further comprises at least two bottom brackets 4, the at least two bottom brackets 4 are supported on the lower surface of the bottom plate 21 at intervals, that is, the number of the bottom brackets 4 may be two, three, or more, and the number of the bottom plate 21 brackets may be flexibly set according to actual requirements. As shown in fig. 1, the power battery box 100 includes three bottom brackets 4, and the three bottom brackets 4 are supported on the lower surface of the bottom plate 21 at intervals, so as to ensure the stability of the battery pack, and the bottom brackets 4 are provided with second mounting holes for connecting with the whole vehicle, and the bottom brackets 4 can be mounted on the vehicle body through connecting pieces penetrating through the second mounting holes, so that the power battery box 100 is fixed on the whole vehicle, and the structural stability of the power battery box 100 is enhanced.

The junction of two arbitrary adjacent curb plates 23 in a plurality of curb plates 23, curb plate 23 and bottom plate 21 all through sealed gluey sealed cooperation to avoid the junction disconnection of two adjacent curb plates 23 or curb plate 23 and bottom plate 21, do benefit to reinforcing power battery box 100's leakproofness, and the process is simple, easily reduction in production cost.

As shown in fig. 1, the upper surface of bottom plate 21 is equipped with the heat conduction pad, and the heat conductivity through the heat conduction pad is convenient for dredge the temperature of battery module, from when battery module high temperature, the heat conduction pad can be with the volume heat transmission to the bottom plate 21 that the battery module produced to from bottom plate 21 outdiffusion, do benefit to and cool down battery module, prevent that battery module high temperature. Meanwhile, the fireproof blankets are arranged on the inner side surfaces of the side plates 23 and the inner side surface of the cover plate 1, so that the power battery box body 100 is prevented from being ignited due to the influence of an external high-temperature environment, and meanwhile, the thermal runaway caused by the internal fire of the power battery is avoided, and the safety performance of the power battery box body 100 is improved.

As shown in fig. 1, the side plate 23 is provided with a cooling valve port 5 connected with a cooling water path, when the temperature of the battery module is too high, the cooling medium in the cooling water path can be guided into the mounting cavity 24 through the cooling valve port 5, so that the heat generated by the battery module can be effectively absorbed and transported by the cooling medium, the temperature of the battery module can be reduced, the temperature of the battery module can be prevented from being too high, and the safety problem can be avoided.

As shown in fig. 1, the side plate 23 is further provided with an electrical connection joint 6 spaced apart from the cooling valve port 5, so as to facilitate charging or discharging of the battery pack through the electrical connection joint 6, and the electrical connection joint 6 and the cooling valve port 5 are located on the same side plate 23 of the plurality of side plates 23, that is, the cooling valve port 5 and the electrical connection joint 6 are located on the same side plate 23, so that the installation and arrangement are easy, and the manufacturing cost is reduced.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A power battery case (100), comprising:

a cover plate (1);

case body (2), case body (2) include bottom plate (21), skeleton (22) and a plurality of curb plate (23), the lower extreme of curb plate (23) with bottom plate (21) link to each other, and are a plurality of curb plate (23) link to each other in proper order and with bottom plate (21) are injectd open installation cavity (24) in upper end, skeleton (22) support install in the edges and corners department of installation cavity (24), apron (1) rotationally install in the upper end of installation cavity (24) and be used for sealing the upper end of installation cavity (24), wherein, the structural strength of bottom plate (21) with the structural strength of skeleton (22) all is greater than the structural strength of curb plate (23), just the structural strength of bottom plate (21) with the structural strength of skeleton (22) all is greater than the structural strength of apron (1).

2. The power battery box body (100) according to claim 1, wherein the framework (22) comprises a first framework (22a) and a second framework (22b), the first framework (22a) is supported at the joint of two adjacent side plates (23), the second framework (22b) is supported at the joint of the side plate (23) and the bottom plate (21), and the first framework (22a) and the second framework (22b) comprise a first plate and a second plate which are connected in a bent mode; wherein

First skeleton (22a) first board with adjacent two the lateral surface laminating of one in curb plate (23), first skeleton (22a) the second board with adjacent two the lateral surface laminating of another in curb plate (23), second skeleton (22b) first board with the lateral surface laminating of curb plate (23), second skeleton (22b) the second board with the lower surface laminating of bottom plate (21).

3. The power battery box body (100) as claimed in claim 2, wherein the framework (22) is made of steel material, and the cover plate (1) and the side plate (23) are both made of aluminum alloy material.

4. The power battery case (100) according to any one of claims 1-3, further comprising: the battery module mounting structure comprises a mounting seat (3), the mounting seat (3) is mounted in the mounting cavity (24) and supported on the upper surface of the bottom plate (21), two ends of the mounting seat (3) respectively extend to the inner wall surfaces of the side plates (23) which are oppositely arranged in the side plates (23) and are abutted against each other, and the mounting seat (3) is used for mounting a battery module.

5. The power battery box body (100) according to claim 4, wherein the number of the installation seats (3) is multiple, the installation seats (3) are arranged on the upper surface of the bottom plate (21) in parallel and in a spaced manner, and first installation holes (31) are formed in the installation seats (3), and the first installation holes (31) are used for being connected with the battery modules.

6. The power battery case (100) according to any one of claims 1-3, further comprising: the bottom support structure comprises at least two bottom supports (4), wherein the at least two bottom supports (4) are supported on the lower surface of the bottom plate (21) at intervals, and the bottom supports (4) are provided with second mounting holes used for being connected with the whole vehicle.

7. The power battery box body (100) according to any one of claims 1-3, wherein the joint of any two adjacent side plates (23) in the plurality of side plates (23) and the joint of the side plates (23) and the bottom plate (21) are in sealing fit through a sealant.

8. The power battery box (100) according to any one of claims 1-3, wherein the upper surface of the bottom plate (21) is provided with a heat conducting pad, and the inner side surfaces of the side plates (23) and the cover plate (1) are provided with fireproof blankets.

9. The power battery box (100) according to any one of claims 1-3, wherein the side plate (23) is provided with a cooling valve port (5) for connection with a cooling water circuit.

10. A power battery case (100) according to claim 9, wherein the side plate (23) is further provided with an electrical connection joint (6) arranged spaced apart from the cooling valve port (5), and the electrical connection joint (6) and the cooling valve port (5) are located in the same side plate (23) of the plurality of side plates (23).