Splicing type battery pack box body

Abstract

The utility model relates to the technical field of battery packs, in particular to a spliced battery pack box body, which comprises an upper cover and a box body with a mounting cavity which are matched with each other, the box body comprises a frame body and a bottom plate which are connected with each other, an inner frame is arranged on the inner wall of the frame body, and a heat insulation groove is formed between the bottom wall of the inner frame and the inner wall of the frame body. A heat insulation pad is embedded in the heat insulation groove; the top of the frame body is provided with a rivet nut, the upper cover is provided with a bolt through hole corresponding to the rivet nut, and a bolt is screwed with the rivet nut after passing through the bolt through hole; bottom plate connecting holes are formed in the bottom of the frame body, and the bottom plate is connected with the bottom plate connecting holes in a screwed mode through screws. The spliced battery pack box is simple in structure and can be quickly spliced, and the beam plates can be freely detached and replaced under the condition that the beam plates are damaged, so that the service life of a battery pack can be effectively prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of battery packs, and in particular to a spliced ​​battery pack box. Background Art

[0002] At present, new energy vehicles have attracted wide attention from all walks of life due to their excellent environmental performance. The requirements for new energy vehicles are also constantly increasing. As a new energy vehicle, electric vehicles are also developing in the direction of high safety, high energy ratio and light weight. The main factor that determines the mileage of electric vehicles is the power supply battery. Different specifications of power supply batteries can be selected for different models to meet driving requirements.

[0003] The power supply battery for electric vehicles is generally composed of a battery pack consisting of multiple battery modules, that is, multiple battery modules are stacked in the same box, and then the battery modules are connected. The core battery module is generally configured with a corresponding number of batteries according to the size of the required output voltage, and then all the batteries are connected to output the voltage.

[0004] In traditional technology, the shell used to encapsulate the battery module is mostly an integrated box with a cover for sealing. The space that can be accommodated in this type of battery pack box structure is relatively fixed, and different specifications of molds must be made to use battery modules of different specifications, which invisibly increases the production cost.

[0005] In addition, the above two battery pack box structures have the problem of heavy weight, which invisibly increases the load on the vehicle.

[0006] Therefore, a new technical solution is urgently needed to solve the above technical problems. Utility Model Content

[0007] The purpose of the utility model is to overcome the above-mentioned problems of the prior art and to provide a spliced ​​battery pack box to solve the technical problem that the traditional technology uses an integrally formed box plus a cover, which requires the provision of molds of various specifications for different battery modules, thereby increasing production costs, as well as the problem of its own heavy weight, which invisibly increases the load of the vehicle.

[0008] The above objectives are achieved through the following technical solutions:

[0009] A spliced battery pack box body, comprising a matching upper cover and a box body with an installation cavity. The box body includes a frame body and a bottom plate connected to each other. An inner frame is provided on the inner wall of the frame body. A heat insulation groove is formed between the bottom wall of the inner frame and the inner wall of the frame body, and a heat insulation pad is embedded in the heat insulation groove; a rivet nut is provided at the top of the frame body, and a bolt through hole corresponding to the rivet nut is provided on the upper cover. After the bolt passes through the bolt through hole, it is screwed with the rivet nut; a bottom plate connection hole is provided at the bottom of the frame body, and the bottom plate is screwed with the bottom plate connection hole through a screw.

[0010] Further, the frame body is a rectangular frame body, including symmetrically arranged side beam plates and end beam plates provided at both ends of the two side beam plates; the side beam plates and the end beam plates have the same structure and both include hollow beam cavities.

[0011] Further, a number of transverse ribs are provided in the beam cavity.

[0012] Further, splicing chamfers are provided at both ends of the side beam plates and the end beam plates.

[0013] Further, the inner frame includes side pressing plates vertically connected to the inner walls of the side beam plates and end pressing plates vertically connected to the inner walls of the end beam plates; the side pressing plates and the end pressing plates both include hollow pressing cavities.

[0014] Further, a number of vertical ribs are provided in the pressing cavity.

[0015] Further, inner frame first splicing corners are provided at both ends of the side pressing plates, and inner frame second splicing corners are provided at both ends of the end pressing plates. After the inner frame first splicing corners and the inner frame second splicing corners are spliced with each other, a vertical connection is formed.

[0016] Further, the side pressing plates and the side beam plates are integrally formed, and the end pressing plates and the end beam plates are integrally formed.

[0017] Further, a vehicle frame fixing plate is provided on the outer side surface of the side beam plates, and a steel sleeve is provided on the vehicle frame fixing plate.

[0018] Further, the box body and the bottom plate are made of metal materials.

[0019] A spliced battery pack box body provided by the utility model is spliced by using side beam plates with different lengths but the same structure and end beam plates with the same structure to form a frame that can adapt to the installation space of different specifications of battery cell modules, and an inner frame is formed inside the frame. After being connected to the bottom plate, a heat insulation groove for heat insulation of the battery cell modules is formed. The vehicle frame is fixed by frame fixing plates arranged on the outer sides of two side beam plates. The spliced battery pack box body not only has a simple structure and can be quickly spliced, but also each beam plate can be freely disassembled and replaced in case of damage, effectively extending the service life of the battery pack. Description of the Drawings

[0020] Figure 1 It is a schematic structural diagram of a spliced battery pack box body described in the utility model;

[0021] Figure 2 It is an exploded view of a spliced battery pack box body described in the utility model;

[0022] Figure 3 It is a top view of the box body in a spliced battery pack box body described in the utility model;

[0023] Figure 4 It is a sectional view of the box body in a spliced battery pack box body described in the utility model;

[0024] Figure 5 It is a schematic diagram of the connection between the frame and the bottom plate in a spliced battery pack box body described in the utility model;

[0025] Figure 6 It is a schematic diagram of a spliced battery pack box body described in the utility model with a heat insulation pad installed;

[0026] Illustration Marks:

[0027] 1 - Upper Cover, 101 - Bolt Through - hole;

[0028] 2 - Box Body, 201 - Installation Cavity;

[0029] 3 - Frame, 301 - Side Beam Plate, 302 - End Beam Plate, 303 - Beam Plate Cavity, 304 - Transverse Rib, 305 - Splicing Oblique Angle;

[0030] 4 - Bottom Plate;

[0031] 5 - Inner Frame, 501 - Side Pressing Plate, 502 - End Pressing Plate, 503 - Pressing Plate Cavity, 504 - Vertical Rib, 505 - First Inner Frame Splicing Angle, 506 - Second Inner Frame Splicing Angle;

[0032] 6 - Heat Insulation Groove;

[0033] 7 - Heat Insulation Pad;

[0034] 8 - Rivet nut;

[0035] 9 - Screw;

[0036] 10 - Frame fixing plate;

[0037] 11 - Steel sleeve. Detailed implementation manners

[0038] The present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. The described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0039] As Figures 1 to 4 shown, this solution provides a spliced battery pack box body, including a matching upper cover 1 and a box body 2 with an installation cavity 201. The box body 2 includes a frame body 3 and a bottom plate 4 that are connected to each other. An inner frame 5 is provided on the inner wall of the frame body 3. A heat insulation groove 6 is formed between the bottom wall of the inner frame 5 and the inner wall of the frame body 3. A heat insulation pad 7 is embedded in the heat insulation groove 6. The heat insulation pad 7 is preferably a heat insulation cotton pad;

[0040] A rivet nut 8 is provided at the top of the frame body 3. A bolt through hole 101 corresponding to the rivet nut 8 is provided on the upper cover 1. After the bolt passes through the bolt through hole 101, it is screwed with the rivet nut 8;

[0041] A bottom plate connection hole is provided at the bottom of the frame body 3. The bottom plate 4 is screwed with the bottom plate connection hole through a screw 9.

[0042] In this embodiment, by providing a rivet nut 8 at the top of the frame body, the connection of the upper cover 1 is facilitated; by providing a bottom plate connection hole at the bottom of the frame body 3, the rapid connection of the bottom plate 4 is facilitated. The screw 9 used for connecting the bottom plate 4 is preferably an FDS flow drill screw, which can connect different materials, has a single-sided connection process, generates no waste chips, has no additional processing procedures, can be disassembled repeatedly, and can be used in combination with structural glue to improve strength.

[0043] The box body 2 and the bottom plate 4 are made of a metal material, preferably metal aluminum or stainless steel.

[0044] As Figure 3 and Figure 5 shown, in this embodiment, the frame body 3 is a rectangular frame body, including symmetrically arranged side beam plates 301 and end beam plates 302 provided at both ends of the two side beam plates 301;

[0045] The side beam plates 301 and the end beam plates 302 have the same structure, and both include a hollow beam plate cavity 303. By using the side beam plates 301 and the end beam plates 302 with the beam plate cavity 303, a hollow interlayer can be formed on the inner and outer sides of the frame 3, effectively isolating the installation cavity 201 from the outside;

[0046] In addition, the hollow interlayer can also reduce the weight of the battery pack box body, and further reduce the load of the vehicle after it is installed on the vehicle.

[0047] As Figure 4 and Figure 5 shown, a number of transverse ribs 304 are provided in the beam plate cavity 303. Through the transverse ribs 304, the strength of the side beam plates 301 and the end beam plates 302 can be effectively enhanced, so that the battery pack box body formed can better protect the battery modules in the installation cavity 201.

[0048] Both ends of the side beam plates 301 and the end beam plates 302 are provided with splicing chamfers 305.

[0049] In this embodiment, in order to enable any two adjacent side beam plates 301 and end beam plates 302 to be perpendicularly connected at 90 degrees, as a preferred solution, the splicing chamfer 305 is set to 45°, and after splicing, they can be bonded with glue or connected with screws.

[0050] As Figure 5 shown, in addition, in this embodiment, the inner frame 5 includes a side pressing plate 501 vertically connected to the inner wall of the side beam plate 301, and an end pressing plate 502 vertically connected to the inner wall of the end beam plate 302;

[0051] Both the side pressing plate 501 and the end pressing plate 502 include a hollow pressing plate cavity 503.

[0052] In this embodiment, the inner frame 5 is in the form of a pressing plate, mainly used for top limiting of the heat insulation pad 7 installed at the bottom in the heat insulation groove 6, so that it is stably embedded in the heat insulation groove 6, and its bottom abuts against the surface of the bottom plate 4.

[0053] In addition, the hollow pressing plate cavity 503 can reduce the weight of the box body 2 and make it lightweight.

[0054] A number of vertical ribs 504 are provided in the pressing plate cavity 503. Through the transverse ribs 504, the strength of the side pressing plate 501 and the end pressing plate 302 can be effectively enhanced, and further the bottom strength of the box body 2 can be increased.

[0055] Both ends of the side pressing plate 501 are provided with first inner frame corner joints 505, and both ends of the end pressing plate 502 are provided with second inner frame corner joints 506. After the first inner frame corner joint 505 and the second inner frame corner joint 506 are spliced with each other, a vertical connection is formed.

[0056] As an embodiment of this solution, the side pressing plate 501 and the side beam plate 301 are integrally formed, and the end pressing plate 502 and the end beam plate 302 are integrally formed.

[0057] In this structure, by selecting side beam plates 301 and end beam plates 302 with different lengths, frames 3 of different specifications can be spliced, and thus different specifications of battery cell modules can be adapted, making the production cost lower and enabling rapid splicing.

[0058] As Figure 1 and Figure 2 shown, in this embodiment, a vehicle frame fixing plate 10 is further provided on the outer side surface of the side beam plate 301, and a steel sleeve 11 is provided on the vehicle frame fixing plate 10, so as to fix the spliced battery pack box body to the vehicle frame through a steel sleeve bolt.

[0059] The above description is only for explaining the implementation manners of the present invention and is not intended to limit the present invention. For those skilled in the art, any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A spliced ​​battery pack box, characterized in that: The invention comprises a matching upper cover (1) and a box body (2) with a mounting cavity (201), the box body (2) comprising a frame body (3) and a bottom plate (4) connected to each other, an inner frame (5) being provided on the inner wall of the frame body (3), a heat insulating groove (6) being formed between the bottom wall of the inner frame (5) and the inner wall of the frame body (3), and a heat insulating pad (7) being embedded in the heat insulating groove (6); A rivet nut (8) is provided on the top of the frame (3), a bolt through hole (101) corresponding to the rivet nut (8) is provided on the upper cover (1), and a bolt is screwed to the rivet nut (8) after passing through the bolt through hole (101); A bottom plate connection hole is provided at the bottom of the frame (3), and the bottom plate (4) is screwed to the bottom plate connection hole via screws (9).

2. The spliced ​​battery pack box according to claim 1, characterized in that: The frame (3) is a rectangular frame, comprising side beam plates (301) symmetrically arranged with respect to each other, and end beam plates (302) arranged at both ends of the two side beam plates (301); The side beam plate (301) and the end beam plate (302) have the same structure, and both include a hollow beam plate cavity (303).

3. The spliced ​​battery pack box according to claim 2, characterized in that: A plurality of transverse ribs (304) are arranged in the beam-slab cavity (303).

4. The spliced ​​battery pack box according to claim 2, characterized in that: Both ends of the side beam plate (301) and the end beam plate (302) are provided with splicing bevel angles (305).

5. The spliced ​​battery pack box according to claim 2, characterized in that: The inner frame (5) comprises a side pressure plate (501) vertically connected to the inner wall of the side beam plate (301), and an end pressure plate (502) vertically connected to the inner wall of the end beam plate (302); The side pressure plate (501) and the end pressure plate (502) both include a hollow pressure plate cavity (503).

6. The spliced ​​battery pack box according to claim 5, characterized in that: A plurality of vertical ribs (504) are arranged in the pressure plate cavity (503).

7. A spliced ​​battery pack box according to claim 5 or 6, characterized in that: The two ends of the side pressure plate (501) are provided with first inner frame corners (505), and the two ends of the end pressure plate (502) are provided with second inner frame corners (506). The first inner frame corner (505) and the second inner frame corner (506) are spliced ​​to each other to form a vertical connection.

8. The spliced ​​battery pack box according to claim 7, characterized in that: The side pressure plate (501) is integrally formed with the side beam plate (301), and the end pressure plate (502) is integrally formed with the end beam plate (302).

9. The spliced ​​battery pack box according to claim 2, characterized in that: A vehicle frame fixing plate (10) is arranged on the outer side surface of the side beam plate (301), and a steel sleeve (11) is arranged on the vehicle frame fixing plate (10).

10. The spliced ​​battery pack box according to claim 1, characterized in that: The box body (2) and the bottom plate (4) are made of metal.

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