Lightweight power battery frame of new energy heavy truck

Abstract

The utility model relates to a light-weight power battery frame of a new energy heavy truck. The light-weight power battery frame comprises a frame, a battery pack, a side power battery frame and a middle power battery frame, a middle power battery frame is arranged between the inner sides of a left longitudinal beam and a right longitudinal beam of the frame, side power battery frames are arranged on the outer sides of the left longitudinal beam and the right longitudinal beam of the frame, and battery packs are arranged on the side power battery frames and the middle power battery frame respectively. The power battery frames are arranged on the two sides and the middle of the frame, namely, the power battery frames are arranged on the left side, the middle side and the right side, the whole vehicle chassis arrangement space is fully utilized, and the upper space of the frame is not occupied; the utility model has the advantages of high reliability, simple assembly and convenient maintenance.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy heavy trucks, and in particular to a lightweight power battery frame for new energy heavy trucks. Background Art

[0002] The rear power battery frame used by mainstream domestic new energy heavy trucks takes up the space for the entire vehicle layout, affecting the vehicle's cargo loading capacity. Problems with the existing technology: The rear power battery frame and the battery pack are installed layer by layer, mostly connected by bolts, with a large number of connecting bolts and a long assembly time. The entire rear power battery frame is high and heavy, and it is difficult to locate the installation holes, resulting in great difficulty in assembly, poor assembly timeliness, and difficulty in maintenance. At the same time, the existing rear power battery frame is heavy, resulting in low power density of the power battery system and high power consumption of the entire vehicle. Utility Model Content

[0003] The purpose of the utility model is to provide a lightweight power battery frame for a new energy heavy truck in view of the deficiencies in the prior art.

[0004] The utility model is realized by adopting the following technical solutions:

[0005] A lightweight power battery frame for a new energy heavy truck, comprising a vehicle frame, a battery pack, a side power battery frame and a center power battery frame;

[0006] The central power battery frame is arranged between the inner sides of the left and right longitudinal beams of the frame, the side power battery frames are arranged on the outer sides of the left and right longitudinal beams of the frame, and the battery packs are respectively arranged on the side power battery frames and the central power battery frame.

[0007] Furthermore, the side-mounted power battery frame is a multi-layer frame structure, each layer includes a first longitudinal beam and a first cross beam; a plurality of first cross beams are arranged between two of the first longitudinal beams; a plurality of vertical transition brackets are arranged on the first longitudinal beam close to the frame side, and a plurality of L-shaped outer beams are arranged on the first longitudinal beam away from the frame side.

[0008] Furthermore, the L-shaped outer beam is a π-shaped flange structure.

[0009] Furthermore, the central power battery frame is a multi-layer frame structure, each layer includes a second longitudinal beam and a second transverse beam; a plurality of second transverse beams are arranged between two of the second longitudinal beams; and a plurality of vertical connecting brackets are symmetrically arranged on the second longitudinal beams on the left and right sides.

[0010] Furthermore, a fixing bracket, a vertical mounting bracket and a U-shaped bottom crossbeam are provided between the vehicle frame, the side power battery frame and the middle power battery frame;

[0011] A plurality of vertical mounting brackets are symmetrically arranged on the left and right longitudinal beams of the frame, the U-shaped bottom cross beam is arranged between the bottoms of the vertical mounting brackets on the left and right sides, a pressure cover is arranged on the top of the vertical mounting bracket, the upper end of the vertical mounting bracket is connected to the frame, the middle part of the vertical mounting bracket is connected to the middle part of the corresponding vertical transition bracket, the fixing bracket is arranged between the lower end of the vertical mounting bracket and the middle part of the vertical connecting bracket, and the bottom of the vertical mounting bracket is connected to the upper end of the U-shaped bottom cross beam.

[0012] Furthermore, a clamping block is provided in the middle of the vertical transition bracket, and a clamping hole is provided in the middle of the vertical mounting bracket, and the clamping block is clamped with the clamping hole.

[0013] Furthermore, the upper end of the U-shaped bottom crossbeam is connected to the lower end of the second crossbeam at the bottom layer.

[0014] Furthermore, the top of the vertical connecting bracket and the upper end of the L-shaped outer beam are both provided with lifting holes.

[0015] Furthermore, the vertical transition bracket, the vertical connection bracket and the vertical installation bracket are all castings.

[0016] Compared with the prior art, the utility model has the following beneficial technical effects:

[0017] The utility model arranges the power battery frame on both sides and in the middle of the frame, that is, left-middle-right arrangement, fully utilizing the layout space of the entire vehicle chassis and not occupying the upper space of the frame; the utility model has high reliability, simple assembly and convenient maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the structure of the side power battery frame and the center power battery frame on the vehicle frame of the utility model;

[0020] Figure 3 This is a schematic diagram of the central power battery frame structure of the utility model;

[0021] Figure 4 This is a schematic diagram of the side-mounted power battery frame structure of the utility model;

[0022] Figure 5 This is a schematic diagram of the U-shaped bottom crossbeam structure of the utility model;

[0023] Figure 6 It is a schematic diagram of the vertical mounting bracket structure of the utility model.

[0024] 1. Vehicle frame; 2. Battery pack; 3. Side power battery frame; 301. First cross beam; 302. First longitudinal beam; 303. L-shaped outer beam; 304. Vertical transition bracket; 4. Central power battery frame; 401. Second cross beam; 402. Second longitudinal beam; 403. Vertical connecting bracket; 5. Fixed bracket; 6. Vertical mounting bracket; 7. Pressure cover; 8. U-shaped bottom cross beam. DETAILED DESCRIPTION

[0025] like Figure 1-6 As shown: A lightweight power battery frame for a new energy heavy-duty truck, comprising a frame 1, a battery pack 2, a side power battery frame 3 and a center power battery frame 4;

[0026] A central power battery frame 4 is arranged between the inner sides of the left and right longitudinal beams of the frame 1 , and side power battery frames 3 are arranged on the outer sides of the left and right longitudinal beams of the frame 1 . Battery packs 2 are arranged on the side power battery frames 3 and the central power battery frame 4 , respectively.

[0027] The side power battery frame 3 is a multi-layer frame structure, each layer includes a first longitudinal beam 302 and a first cross beam 301; a plurality of first cross beams 301 are arranged between two first longitudinal beams 302; a plurality of vertical transition brackets 304 are arranged on the first longitudinal beam 302 close to the frame 1 side, and a plurality of L-shaped outer beams 303 are arranged on the first longitudinal beam 302 away from the frame 1 side. Preferably, the first cross beam 301 and the first longitudinal beam 302 are both U-shaped beam structures and welded to form a rectangular frame structure, which together with the vertical transition bracket 304 and the L-shaped outer beam 303 form a space for accommodating the battery pack 2; the overall length and width dimensions can be changed according to the matching battery pack 2 size to meet the installation requirements of the battery pack 2 of different vehicle models; the first cross beam 301 has an opening on the upper part for installing the battery pack 2. Furthermore, the cross-section of the L-shaped outer beam 303 is a π-shaped flange structure. The outer side of the first longitudinal beam 302 away from the frame 1 is bolted to the L-shaped outer beam 303, and the outer side of the first longitudinal beam 302 close to the frame 1 is bolted to the vertical transition bracket 304. The top of the vertical transition bracket 304 is bolted to one end of the L-shaped outer beam 303.

[0028] The central power battery frame 4 is a multi-layer frame structure, each layer includes a second longitudinal beam 402 and a second cross beam 401; a plurality of second cross beams 401 are arranged between the two second longitudinal beams 402; a plurality of vertical connection brackets 403 are symmetrically arranged on the second longitudinal beams 402 on the left and right sides. Preferably, the second cross beam 401 and the second longitudinal beam 402 both adopt a U-shaped beam structure, and a rectangular frame structure is formed by welding, and together with the vertical connection bracket 403, they form a space for accommodating the battery pack 2; the overall length and width dimensions can be changed according to the matching battery pack 2 size to meet the installation requirements of the battery pack 2 of different vehicle models; the second cross beam 401 has a hole in the upper part for installing the battery pack 2. The upper and lower ends of the vertical connection bracket 403 are bolted to the second longitudinal beam 402.

[0029] A fixing bracket 5, a vertical mounting bracket 6 and a U-shaped bottom crossbeam 8 are arranged between the vehicle frame 1, the side power battery frame 3 and the middle power battery frame 4;

[0030] A plurality of vertical mounting brackets 6 are symmetrically arranged on the left and right longitudinal beams of the frame 1, a U-shaped bottom cross beam 8 is arranged between the bottoms of the vertical mounting brackets 6 on the left and right sides, a pressure cover 7 is arranged on the top of the vertical mounting bracket 6, the upper end of the vertical mounting bracket 6 is connected to the frame 1, the middle part of the vertical mounting bracket 6 is connected to the middle part of the corresponding vertical transition bracket 304, a fixing bracket 5 is arranged between the lower end of the vertical mounting bracket 6 and the middle part of the vertical connecting bracket 403, and the bottom of the vertical mounting bracket 6 is connected to the upper end of the U-shaped bottom cross beam 8. Preferably, the vertical mounting bracket 6, the pressure cover 7 and the vertical transition bracket 304 are mutually matched parts. In this embodiment, three groups of vertical mounting brackets 6 are provided, each group has two, and they are symmetrically arranged on the left and right longitudinal beams of the frame 1, wherein the bottom of the middle vertical mounting bracket 6 may not be connected to the U-shaped bottom cross beam 8, the mounting surface between the front and rear ends of the vertical mounting bracket 6 and the vertical transition bracket 304 is a V-shaped surface for limiting the left and right directions, the mounting surface between the middle vertical mounting bracket 6 and the vertical transition bracket 304 is a V-shaped surface for limiting the front, rear, left and right directions, and the mounting surface between the vertical mounting bracket 6 and the pressure cover 7 is a plane for limiting the top, bottom, front, rear, left and right directions. Further, the top of the vertical mounting bracket 6 is bolted to the pressure cover 7, the upper end of the vertical mounting bracket 6 is bolted to the frame 1, and the lower end of the vertical mounting bracket 6 is bolted to the fixed bracket 5 between the middle of the vertical connecting bracket 403.

[0031] A clamping block is provided in the middle of the vertical transition bracket 304, and a clamping hole is provided in the middle of the vertical mounting bracket 6, and the clamping block is clamped with the clamping hole, so as to be used for clamping and limiting between the middle of the vertical transition bracket 304 and the vertical mounting bracket 6.

[0032] The upper end of the U-shaped bottom crossbeam 8 is connected to the lower end of the second crossbeam 401 at the bottom layer; the bottom of the vertical mounting bracket 6 pre-assembled on both sides of the frame is installed by bolts to increase the overall torsional stiffness of the power battery; a through hole is designed on the plane of the crossbeam to fix the central power battery frame.

[0033] The top of the vertical connection bracket 403 and the upper end of the L-shaped outer beam 303 are both provided with hoisting holes; the hoisting holes are used for hoisting, and the overall hoisting solution is adopted to improve the assembly timeliness and maintenance convenience. Preferably, in this embodiment, three groups of vertical connection brackets 403 are provided, each group has two, and they are symmetrically arranged on the left and right longitudinal beams of the frame 1, wherein the tops of the vertical connection brackets 403 at the front and rear ends are provided with hoisting holes.

[0034] The vertical transition bracket 304, the vertical connecting bracket 403 and the vertical mounting bracket 6 are all high-strength castings; other frames adopt high-strength steel sheet metal structure; the overall frame structure can be thinned by more than 20% under the same working conditions. At the same time, the hot forming process is used to increase the material thickness at the stress concentration point according to the force characteristics of the components, and the material thickness of other parts is appropriately thinned, so as to achieve an overall weight reduction of more than 30% for the power battery frame, thereby improving the energy density of the power battery system, increasing the vehicle's cargo loading capacity, reducing the energy consumption of the vehicle, and increasing the cruising range.

Claims

1. A lightweight power battery frame for new energy heavy trucks, characterized in that: It comprises a vehicle frame (1), a battery pack (2), a side power battery frame (3) and a center power battery frame (4); The central power battery frame (4) is arranged between the inner sides of the left and right longitudinal beams of the vehicle frame (1), the side power battery frames (3) are arranged on the outer sides of the left and right longitudinal beams of the vehicle frame (1), and the battery packs (2) are arranged on the side power battery frames (3) and the central power battery frame (4), respectively.

2. The lightweight power battery frame for new energy heavy trucks as claimed in claim 1, characterized in that: The side-mounted power battery frame (3) is a multi-layer frame structure, each layer comprising a first longitudinal beam (302) and a first transverse beam (301); a plurality of first transverse beams (301) are arranged between two of the first longitudinal beams (302); a plurality of vertical transition brackets (304) are arranged on the first longitudinal beam (302) close to the vehicle frame (1), and a plurality of L-shaped outer beams (303) are arranged on the first longitudinal beam (302) away from the vehicle frame (1).

3. The lightweight power battery frame for new energy heavy trucks as claimed in claim 2, characterized in that: The L-shaped outer beam (303) is a π-shaped flange structure.

4. The lightweight power battery frame for new energy heavy trucks as claimed in claim 3, characterized in that: The central power battery frame (4) is a multi-layer frame structure, each layer comprising a second longitudinal beam (402) and a second transverse beam (401); a plurality of second transverse beams (401) are arranged between two second longitudinal beams (402); and a plurality of vertical connection brackets (403) are symmetrically arranged on the second longitudinal beams (402) on the left and right sides.

5. The lightweight power battery frame for new energy heavy trucks as claimed in claim 4, characterized in that: A fixing bracket (5), a vertical mounting bracket (6) and a U-shaped bottom crossbeam (8) are provided between the vehicle frame (1), the side power battery frame (3) and the center power battery frame (4); A plurality of the vertical mounting brackets (6) are symmetrically arranged on the left and right longitudinal beams of the frame (1); a U-shaped bottom cross beam (8) is arranged between the bottoms of the left and right vertical mounting brackets (6); a pressure cover (7) is arranged on the top of the vertical mounting bracket (6); the upper end of the vertical mounting bracket (6) is connected to the frame (1); the middle part of the vertical mounting bracket (6) is connected to the middle part of the corresponding vertical transition bracket (304); the fixing bracket (5) is arranged between the lower end of the vertical mounting bracket (6) and the middle part of the vertical connecting bracket (403); and the bottom of the vertical mounting bracket (6) is connected to the upper end of the U-shaped bottom cross beam (8).

6. The lightweight power battery frame for new energy heavy trucks as claimed in claim 5, characterized in that: A clamping block is provided in the middle of the vertical transition bracket (304), a clamping hole is provided in the middle of the vertical installation bracket (6), and the clamping block is clamped with the clamping hole.

7. The lightweight power battery frame for new energy heavy trucks as claimed in claim 5, characterized in that: The upper end of the U-shaped bottom crossbeam (8) is connected to the lower end of the second crossbeam (401) located at the bottom layer.

8. The lightweight power battery frame for new energy heavy trucks as claimed in claim 5, characterized in that: The top of the vertical connection bracket (403) and the upper end of the L-shaped outer beam (303) are both provided with lifting holes.

9. The lightweight power battery frame for new energy heavy trucks as claimed in claim 5, characterized in that: The vertical transition bracket (304), the vertical connection bracket (403) and the vertical installation bracket (6) are all castings.

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