Power battery box structure

Abstract

The utility model provides a power battery box structure, which relates to the technical field of batteries, and comprises a bottom framework layer, the bottom framework layer comprises two first side ribs and a plurality of first support beams, the plurality of first support beams are arranged between the two first side ribs, and two ends of each first support beam are respectively connected with the two first side ribs; the multiple supporting columns are arranged on the two first side ribs, and the two first side ribs are connected with the bottom ends of the two supporting columns correspondingly; the lower box body is in a box shape with the top open, the two first side ribs and the multiple first supporting beams are connected to the inner bottom face of the lower box body, the two supporting columns are connected to the inner side faces of the lower box body respectively, a force transmission path is guaranteed, and the force can be transmitted and dispersed through decomposition and transmission of the formed structure. The balance between the structural quality and the performance of the whole battery box body is realized, the characteristics of simple structure and high strength are embodied, and the battery box body has enough fatigue durability.

Description

Technical Field

[0001] The utility model belongs to the technical field of batteries, and more specifically, relates to a power battery box structure. Background Art

[0002] With the development of new energy, electric and hybrid trucks are attracting more and more attention in the automotive industry. Because light trucks do not emit pollutants during driving, they have less pollution to the environment, and they have the advantages of low noise, low heat radiation, and easy operation. People have high expectations for light trucks. Therefore, the power battery box structure design of light trucks is very important. This power battery box structure of light trucks must not only meet the installation function of assembling battery modules, but also meet the overall strength requirements.

[0003] At present, since this power battery box structure is installed on light truck new energy vehicles with complex road conditions, sometimes encountering twisted roads, fish scale potholes or bumpy roads, etc., coupled with its own weight, the existing power battery box structure still does not have sufficient fatigue durability performance. Utility Model Content

[0004] The purpose of the utility model is to provide a power battery box structure in view of the deficiencies in the existing technology, so as to solve the problem that the power battery box structure of the light truck new energy vehicle proposed in the above background technology must not only meet the installation function of assembling the battery module, but also meet the overall strength requirements. Since this power battery box structure is installed on a light truck new energy vehicle, the road conditions are complicated, and sometimes twisted roads, fish scale pit roads or bumpy roads are encountered. In addition to its own weight, the existing power battery box structure still does not have sufficient fatigue durability performance.

[0005] In order to achieve the above object, the utility model provides a power battery box structure, the battery box structure comprising:

[0006] A bottom frame layer, the bottom frame layer comprising two first side ribs and a plurality of first support beams, the plurality of first support beams are arranged between the two first side ribs, and two ends of each first support beam are respectively connected to the two first side ribs;

[0007] A plurality of support columns, wherein the plurality of support columns are arranged on the two first side ribs, and the two first side ribs are respectively connected to the bottom ends of the two parts of the support columns;

[0008] The lower box body is in the shape of a box with an open top, the two first side ribs and the plurality of the first support beams are connected to the inner bottom surface of the lower box body, and the two parts of the support columns are respectively connected to the inner side surfaces of the lower box body.

[0009] Preferably, the power battery box structure further includes a top frame layer, which is detachably connected to the top ends of the plurality of support columns, and the bottom frame layer and the top frame layer are both used for assembling battery modules.

[0010] Preferably, the power battery box structure further includes an upper box cover, which is in the shape of a box with an open lower portion, and is detachably connected to the lower box.

[0011] Preferably, the top framework layer comprises:

[0012] Two second side ribs, wherein the two second side ribs are detachably connected to the top ends of the two parts of the support columns respectively;

[0013] A plurality of second support beams are arranged between two second side ribs, and two ends of each second support beam are respectively connected to two second side ribs.

[0014] Preferably, the power battery box structure further includes two hanging components, and the two hanging components are respectively connected to two sides of the exterior of the lower box.

[0015] Preferably, the power battery box structure further includes a mounting plate, which is disposed in the lower box and connected to one inner end of the lower box, and the two ends of the mounting plate are respectively connected to the two first side ribs.

[0016] Preferably, the cross-sections of the first side rib, the first support beam and the support column are all U-shaped, the U-shaped first side rib is connected to the inner bottom surface of the lower box body to form a closed cross-section structure, the U-shaped first support beam and the inner bottom surface of the lower box body form a closed cross-section structure, and the U-shaped support column and the inner side surface of the lower box body form a closed cross-section structure.

[0017] Preferably, the second support beam has a U-shaped cross section, the second side rib has a U-shaped cross section, and at least one side of the U-shaped second side rib is bent to form a flange.

[0018] Preferably, a plurality of weight-reducing holes are distributed on the first side ribs, the first support beam and the support column.

[0019] Preferably, the upper box cover, the lower box body, the bottom frame layer and the top frame layer are all sheet metal components.

[0020] The utility model provides a power battery box structure, which has the beneficial effects that the bottom frame layer of the battery box structure is used to assemble battery modules, thereby realizing the function of bearing the battery modules; the two first side ribs of the box structure are connected to the inner bottom surface of the lower box with a plurality of first support beams; the two parts of the support columns are respectively connected to the inner side surfaces of the lower box; the two first side ribs, the plurality of first support beams and the two parts of the support columns constitute a unique structure inside the lower box that can withstand the force transmitted through the tires by ground excitation; the force transmission path can be ensured by decomposing and transmitting the formed structure, thereby achieving a balance between the quality and performance of the entire battery box structure, reflecting the characteristics of simple structure and high strength, and having sufficient fatigue durability.

[0021] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present invention.

[0023] Figure 1 A schematic diagram of the three-dimensional structure of a lower box body of a power battery box body structure according to an embodiment of the utility model is shown;

[0024] Figure 2 A schematic diagram of a top view of a lower box body of a power battery box body structure according to an embodiment of the utility model is shown;

[0025] Figure 3 A schematic diagram of a three-dimensional structure of a power battery box structure when a bottom frame layer and a top frame layer are connected together according to an embodiment of the utility model is shown;

[0026] Figure 4 A schematic diagram of the top frame layer three-dimensional structure of a power battery box structure according to an embodiment of the utility model is shown;

[0027] Figure 5 A schematic diagram of a three-dimensional structure of a power battery box structure according to an embodiment of the utility model is shown;

[0028] Figure 6 A force transmission diagram of a power battery box structure according to an embodiment of the utility model is shown.

[0029] Description of reference numerals:

[0030] 1. Bottom frame layer; 11. First side reinforcement; 12. First support beam; 2. Top frame layer; 21. Second side reinforcement; 22. Second support beam; 3. Lower box; 4. Upper box cover; 5. Lifting components; 6. Mounting plate; 7. Support column DETAILED DESCRIPTION

[0031] The preferred embodiments of the present invention will be described in more detail below. Although the preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0032] like Figure 1 and Figure 2 As shown, the utility model provides a power battery box structure, the battery box structure includes:

[0033] A bottom frame layer 1, the bottom frame layer 1 comprises two first side ribs 11 and a plurality of first support beams 12, the plurality of first support beams 12 are arranged between the two first side ribs 11, and two ends of each first support beam 12 are respectively connected to the two first side ribs 11;

[0034] A plurality of support columns 7, wherein the plurality of support columns 7 are arranged on two first side ribs 11, and the two first side ribs 11 are respectively connected to the bottom ends of two parts of the support columns 7;

[0035] The lower box body 3 is in the shape of a box with an open top. Two first side ribs 11 and a plurality of first support beams 12 are connected to the inner bottom surface of the lower box body 3 . Two support columns 7 are respectively connected to the inner side surfaces of the lower box body 3 .

[0036] Specifically, in order to solve the problem that the power battery box structure of a light truck new energy vehicle must not only meet the installation function of assembling a battery module, but also meet the overall strength requirements, since this power battery box structure is installed on a light truck new energy vehicle, the road conditions are complicated, and sometimes twisted roads, fish scale pit roads or bumpy roads are encountered. In addition to its own weight, the existing power battery box structure still does not have sufficient fatigue durability. The utility model provides a power battery box structure, the bottom frame layer 1 of the battery box structure is used to assemble the battery module, and the function of bearing the battery module is realized. The two first side ribs 11 of the box structure and the multiple first support beams 12 are connected to the inner bottom surface of the lower box 3, and the two-part support column 7 is respectively connected to the inner side of the lower box 3. The structure formed by the two first side ribs 11, the multiple first support beams 12 and the two-part support column 7 inside the lower box 3 can withstand the force transmitted by the tire through the ground excitation, and can be decomposed and transmitted through the formed structure. Dispersion, ensure the transmission path of the force, achieve the balance between the quality and performance of the entire battery box structure, embody the characteristics of simple structure and high strength, and have sufficient fatigue durability.

[0037] Preferably, the two first side ribs 11 are respectively welded to the bottom ends of the two support columns 7, the two first side ribs 11 are welded to the inner bottom surface of the lower box body 3 and the two support columns 7 are respectively welded to the inner side surfaces of the lower box body 3.

[0038] Specifically, the welding connection method can improve the strength of the connection, thereby improving the stability of the connection.

[0039] like Figure 3 and Figure 6 As shown, preferably, the power battery box structure also includes a top frame layer 2, which is detachably connected to the top ends of multiple support columns 7, and the bottom frame layer 2 and the top frame layer 1 are both used to assemble battery modules.

[0040] Specifically, the top frame layer 2 and the bottom frame layer 1 are both used to assemble battery modules, which doubles the power. In addition, since the top frame layer 2 can be detachably connected to the top of multiple support columns 7, it is convenient to repair the battery modules later. The bottom frame layer 1, the top frame layer 2 and the multiple support columns 7 form a unique cage structure in the lower box 3, which ensures the force transmission path, and can be decomposed and transmitted through the formed cage structure.

[0041] like Figure 5 As shown, preferably, the power battery box structure further includes an upper box cover 4, which is in the shape of a box with an open lower portion, and the upper box cover 4 is detachably connected to the lower box body 3.

[0042] Specifically, the upper box cover 4 and the lower box body 3 can be screwed together to form a complete battery box structure.

[0043] like Figure 4 As shown, preferably, the top frame layer 2 includes:

[0044] Two second side ribs 21, the two second side ribs 21 are detachably connected to the top ends of the two support columns 7 respectively;

[0045] A plurality of second support beams 22 are arranged between the two second side ribs 21 , and two ends of each second support beam 22 are respectively connected to the two second side ribs 21 .

[0046] Specifically, the two second side ribs 21 can be screwed together with the top ends of the two support columns 7, which is convenient for disassembly and convenient for later maintenance of the battery module. The two ends of each second support beam 22 can be connected to the two second side ribs 21 by welding. The welding connection method can improve the strength of the connection, thereby improving the stability of the connection.

[0047] Preferably, the power battery box structure further includes two hanging components 5 , and the two hanging components 5 are respectively connected to two sides of the outside of the lower box 3 .

[0048] Specifically, the two hoisting components 5 are respectively welded to the two sides of the outside of the lower box body 3, and the two hoisting components 5 are used to realize the hoisting of the power battery box structure.

[0049] Preferably, the power battery box structure further includes a mounting plate 6 , which is disposed in the lower box 3 and connected to one end inside the lower box 3 , and both ends of the mounting plate 6 are respectively connected to the two first side ribs 11 .

[0050] Specifically, two ends of the mounting plate 6 are respectively welded to the two first side ribs 11 , and the mounting plate 6 is used to assemble electrical components of the power battery.

[0051] Preferably, the cross-sections of the first side rib 11, the first support beam 12 and the support column 7 are all U-shaped, the U-shaped first side rib 11 is connected to the inner bottom surface of the lower box body 3 to form a closed cross-sectional structure, the U-shaped first support beam 12 and the inner bottom surface of the lower box body 3 form a closed cross-sectional structure, and the U-shaped support column 7 and the inner side surface of the lower box body 3 form a closed cross-sectional structure.

[0052] Specifically, the formed closed cross-section structure can better meet the overall rigidity.

[0053] Preferably, the second support beam 22 has a U-shaped cross section, the second side rib 21 has a U-shaped cross section, and at least one side of the U-shaped second side rib 21 is bent to form a flange.

[0054] Specifically, the cross section is U-shaped, and at least one side of the U-shaped second side rib 21 is bent to form a flange, which can better meet the overall rigidity.

[0055] Preferably, a plurality of weight-reducing holes are distributed on the first side rib 11 , the first support beam 12 and the support column 7 .

[0056] Specifically, the bottom frame layer 1, the top frame layer 2 and the plurality of support columns 7 form a unique cage-shaped structure in the lower box body 3, which has very good strength. Furthermore, while meeting the strength requirement, holes are opened to reduce weight, thereby achieving a lightweight design.

[0057] Preferably, the upper box cover 4, the lower box body 3, the bottom frame layer 1 and the top frame layer 2 are all sheet metal components.

[0058] Specifically, the upper box cover 4, the lower box body 3, the bottom frame layer 1 and the top frame layer 2 can all be formed by bending sheet metal components, without the need to develop molds, which simplifies manufacturing and saves costs, while having a high rate of common parts.

[0059] In summary, when the power battery box structure provided by the utility model is implemented, the bottom frame layer 2, the top frame layer 1 and multiple support columns form a unique cage structure in the upper box cover 4 and the lower box 3, which can withstand the force transmitted by the tires through the ground excitation, and can be decomposed and transmitted through the formed cage structure. Dispersed, ensure the force transmission path, achieve a balance between the quality and performance of the entire battery box structure, embody the characteristics of simple structure and high strength, and have sufficient fatigue durability.

[0060] The various embodiments of the utility model have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A power battery box structure, characterized in that: The battery box structure includes: A bottom frame layer, the bottom frame layer comprising two first side ribs and a plurality of first support beams, the plurality of first support beams are arranged between the two first side ribs, and two ends of each first support beam are respectively connected to the two first side ribs; A plurality of support columns, wherein the plurality of support columns are arranged on the two first side ribs, and the two first side ribs are respectively connected to the bottom ends of the two parts of the support columns; The lower box body is in the shape of a box with an open top, the two first side ribs and the plurality of the first support beams are connected to the inner bottom surface of the lower box body, and the two parts of the support columns are respectively connected to the inner side surfaces of the lower box body.

2. A power battery box structure according to claim 1, characterized in that: The power battery box structure also includes a top frame layer, which is detachably connected to the top ends of the plurality of support columns, and the bottom frame layer and the top frame layer are both used for assembling battery modules.

3. A power battery box structure according to claim 2, characterized in that: The power battery box structure also includes an upper box cover, which is in the shape of a box with an open lower portion, and is detachably connected to the lower box.

4. A power battery box structure according to claim 2, characterized in that: The top framework layer includes: Two second side ribs, wherein the two second side ribs are detachably connected to the top ends of the two parts of the support columns respectively; A plurality of second support beams are arranged between two second side ribs, and two ends of each second support beam are respectively connected to two second side ribs.

5. A power battery box structure according to claim 1, characterized in that: The power battery box structure also includes two hanging components, and the two hanging components are respectively connected to the outer sides of the lower box.

6. A power battery box structure according to claim 1, characterized in that: The power battery box structure also includes a mounting plate, which is disposed in the lower box and connected to one end inside the lower box, and two ends of the mounting plate are respectively connected to the two first side ribs.

7. A power battery box structure according to claim 1, characterized in that: The cross-sections of the first side rib, the first support beam and the support column are all U-shaped. The U-shaped first side rib is connected to the inner bottom surface of the lower box body to form a closed cross-section structure. The U-shaped first support beam and the inner bottom surface of the lower box body form a closed cross-section structure. The U-shaped support column and the inner side surface of the lower box body form a closed cross-section structure.

8. A power battery box structure according to claim 4, characterized in that: The second support beam has a U-shaped cross section, the second side rib has a U-shaped cross section, and at least one side of the U-shaped second side rib is bent to form a flange.

9. A power battery box structure according to claim 1, characterized in that: A plurality of weight-reducing holes are distributed on the first side ribs, the first support beam and the support column.

10. A power battery box structure according to claim 3, characterized in that: The upper box cover, the lower box body, the bottom frame layer and the top frame layer are all sheet metal components.

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