Power battery and frame integrated structure based on CTC new energy light truck and light truck

Abstract

The invention relates to a power battery and vehicle frame integrated structure based on a CTC new energy light truck and the light truck, the power battery and vehicle frame integrated structure comprises a vehicle frame, the vehicle frame is provided with a power battery pack and comprises a plurality of cross beams, a left longitudinal beam and a right longitudinal beam, the left longitudinal beam and the right longitudinal beam are connected through the cross beams, and the left longitudinal beam is provided with a battery pack fixing support; the upper end of the battery pack fixing bracket is connected with the left longitudinal beam through a fixing bolt, the lower end of the battery pack fixing bracket is connected with the battery pack mounting bracket through a connecting bolt, and the battery pack mounting bracket is provided with a power battery pack; the shell of the power battery pack is integrated on the frame, the battery cell of the battery pack is packaged in the shell, and the upper cover is provided with the protruding part, so that the protruding part is matched with the shell to penetrate through the bottom of the longitudinal beam of the frame and is located at the lower end of the first cross beam, the battery bracket is compact in structure, the ground clearance of the battery pack is increased, and the collision safety performance of a whole vehicle power battery is improved; and the torsional strength of the frame is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of commercial vehicles, and in particular to a CTC new energy light truck power battery frame integrated structure and a light truck. Background Art

[0002] In recent years, the penetration rate of new energy light trucks has been increasing. Most new energy light trucks are modified from traditional energy frames to new energy frames. This type of frame has a complex structure and high self-weight. In addition, due to the influence of the frame crossbeam, the ground clearance of the battery pack is small. Therefore, this frame state cannot meet the strict requirements of new energy light trucks on self-weight.

[0003] CTC (cell-to-chassis) technology refers to the integrated design of batteries, chassis and lower body. It is a leading technical solution that reduces redundant structural design and effectively reduces the number of parts, thereby improving space utilization, system specific energy, and improving the space, endurance and handling of electric vehicles. Summary of the invention

[0004] The purpose of the present invention is to address the deficiencies in the prior art and thus provide a CTC new energy light truck power battery frame integrated structure and a light truck.

[0005] The present invention is achieved by adopting the following technical solutions:

[0006] A power battery frame integrated structure based on a CTC new energy light truck includes a frame, the frame is provided with a power battery pack, the frame includes a plurality of cross beams, a left longitudinal beam and a right longitudinal beam, the left longitudinal beam and the right longitudinal beam are connected by the cross beam, the left longitudinal beam is provided with a battery pack fixing bracket, the upper end of the battery pack fixing bracket is connected to the left longitudinal beam by a fixing bolt, the lower end of the battery pack fixing bracket is connected to the battery pack mounting bracket by a connecting bolt, and the battery pack mounting bracket is provided with the power battery pack.

[0007] Furthermore, the battery pack mounting bracket includes a connecting plate and a mounting reinforcement plate, the connecting plate is a "U"-shaped structure, the connecting plate is fixedly connected to the mounting reinforcement plate, and the battery pack fixing bracket is a "J"-shaped structure.

[0008] Furthermore, the connecting plate is connected to the battery pack fixing bracket via connecting bolts, and the mounting reinforcement plate is connected to the power battery pack via connecting bolts.

[0009] Furthermore, the power battery pack includes an upper cover, a shell and battery cells, the battery cells are packaged in the shell, the upper cover is arranged at the upper end of the shell, the upper cover is provided with a protrusion, and the protrusion is located at the lower end of the beam; the mounting reinforcement plate is fixedly connected to the shell.

[0010] Furthermore, the cross beam includes a first cross beam and a second cross beam, the first cross beams are at least two groups, and the left longitudinal beam and the right longitudinal beam are fixedly connected by the first cross beam and the second cross beam.

[0011] Furthermore, the first cross beam includes a first cross beam body and a first reinforcement plate, the first cross beam body is provided with the first reinforcement plate at the upper end, the first cross beam body is connected to the ventral surface of the left longitudinal beam and the right longitudinal beam, and the first reinforcement plate is connected to the upper wing surface of the left longitudinal beam and the right longitudinal beam.

[0012] Furthermore, the second cross beam includes a second cross beam body, an inner reinforcement plate and an outer reinforcement plate, the inner reinforcement plate and the outer reinforcement plate are provided at both ends of the second cross beam body, one end of the inner reinforcement plate is connected to the second cross beam body, the other end of the inner reinforcement plate is fixedly connected to the inner side of the outer reinforcement plate, the outer side of the outer reinforcement plate is connected to the ventral surface of the left longitudinal beam and the right longitudinal beam, and the upper end of the outer reinforcement plate is connected to the upper wing surface of the left longitudinal beam and the right longitudinal beam.

[0013] Furthermore, the first cross beam is a "Π"-shaped structure, and the raised portion provided on the upper cover is located at the lower end of the first cross beam; the second cross beam is a square structure.

[0014] Furthermore, the cross-sections of the left longitudinal beam and the right longitudinal beam are both "C"-shaped structures; the left longitudinal beam and the right longitudinal beam are also provided with a plurality of upper mounting connecting plates, and the upper mounting connecting plates are connected to the upper mounting.

[0015] A light truck comprises any of the above-described CTC new energy light truck power battery frame integrated structures, wherein the light truck is a CTC new energy light truck.

[0016] Compared with the prior art, the present invention has the following beneficial technical effects:

[0017] The power battery pack is connected to the frame through the battery pack fixing bracket and the battery pack mounting bracket to realize the integration of the frame and the power battery pack, forming a CTC frame structure, which reflects the lightweight and integrated frame assembly;

[0018] The battery pack mounting brackets are connected to both sides of the power battery housing, so that the vehicle frame and the power battery pack are integrated, which is convenient for the power battery cells to be directly installed on the power battery housing when the frame is put into production, and then packaged through the upper cover. When there are different power requirements, the number of cells can be adaptively increased or decreased, which is beneficial to improve the charging capacity and endurance of the battery pack, so that one frame can meet different power requirements, further realize the modularization of the whole vehicle, and reduce the types of parts;

[0019] By integrating the power battery pack shell into the frame, because the battery cells of the battery pack are encapsulated in the shell, a protrusion is provided on the upper cover, so that the protrusion cooperates with the shell to pass through the bottom of the frame longitudinal beam and is located at the lower end of the first cross beam, so that the battery bracket structure is compact, the ground clearance of the battery pack is increased, the collision safety performance of the power battery of the whole vehicle is improved, and the torsional strength of the frame is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall result of the integrated structure of the power battery frame of a CTC new energy light truck according to the present invention;

[0021] Figure 2 It is a schematic diagram of the connection structure between the vehicle frame and the battery pack fixing bracket of the present invention;

[0022] Figure 3 It is a schematic diagram of the connection structure between the vehicle frame and the power battery pack of the present invention;

[0023] Figure 4 It is a schematic diagram of the structure of the power battery pack of the present invention;

[0024] Figure 5 is a schematic structural diagram of the first crossbeam of the present invention;

[0025] Figure 6 It is a structural schematic diagram of the battery pack fixing bracket of the present invention;

[0026] Figure 7 It is a schematic structural diagram of the second crossbeam of the present invention.

[0027] Reference numerals

[0028] 1. Left longitudinal beam; 2. First cross beam; 201. First cross beam body; 202. First reinforcement plate; 3. Power battery pack; 301. Upper cover; 302. Shell; 4. Battery pack mounting bracket; 401. Connecting plate; 402. Mounting reinforcement plate; 5. Second cross beam; 501. Second cross beam body; 502. Outer reinforcement plate; 503. Inner reinforcement plate; 6. Right longitudinal beam; 7. Battery pack fixing bracket; 8. Upper connecting plate; 9. Connecting bolts; 10. Fixing bolts. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0030] A power battery frame integrated structure based on a CTC new energy light truck includes a frame, the frame is provided with a power battery pack 3, the frame includes a plurality of cross beams, a left longitudinal beam 1 and a right longitudinal beam 6, the left longitudinal beam 1 and the right longitudinal beam 6 are connected by a cross beam, the left longitudinal beam 1 is provided with a battery pack fixing bracket 7, the upper end of the battery pack fixing bracket 7 is connected to the left longitudinal beam 1 by a fixing bolt 10, the lower end of the battery pack fixing bracket 7 is connected to the battery pack mounting bracket 4 by a connecting bolt 9, and the battery pack mounting bracket 4 is provided with a power battery pack 3.

[0031] The battery pack mounting bracket 4 includes a connecting plate 401 and a mounting reinforcement plate 402. The connecting plate 401 is a "U"-shaped structure. The connecting plate 401 and the mounting reinforcement plate 402 are fixedly connected. The battery pack fixing bracket 7 is a "J"-shaped structure.

[0032] The power battery pack 3 is connected to the vehicle frame through the battery pack fixing bracket 7 and the battery pack mounting bracket 4, so that the vehicle frame and the power battery pack 3 are integrated to form a CTC frame structure. When the vehicle power battery is installed, its battery cell can be directly installed in the shell 302, and then the upper cover 301 is installed on the frame by bolts.

[0033] The power battery pack 3 has different power requirements, so the battery cells can be adaptively increased or decreased to meet different power requirements.

[0034] The connecting plate 401 is connected to the battery pack fixing bracket 7 via connecting bolts 9 , and the mounting reinforcement plate 402 is connected to the power battery pack 3 via connecting bolts 9 .

[0035] The power battery pack 3 includes an upper cover 301 , a shell 302 and battery cells. The battery cells are packaged in the shell 302 . The upper cover 301 is arranged at the upper end of the shell 302 . The upper cover 301 is provided with a protrusion, and the protrusion is located at the lower end of the crossbeam. The reinforcing plate 402 is installed and fixedly connected to the shell 302 .

[0036] The cross beams include a first cross beam 2 and a second cross beam 5 . The first cross beams 2 are at least two groups. The left longitudinal beam 1 and the right longitudinal beam 6 are fixedly connected by the first cross beam 2 and the second cross beam 5 .

[0037] The first cross beam 2 includes a first cross beam body 201 and a first reinforcing plate 202 . The first cross beam body 201 is provided with a first reinforcing plate 202 at the upper end. The first cross beam body 201 is connected to the ventral surfaces of the left longitudinal beam 1 and the right longitudinal beam 6 . The first reinforcing plate 202 is connected to the upper wing surfaces of the left longitudinal beam 1 and the right longitudinal beam 6 .

[0038] The second cross beam 5 includes a second cross beam body 501, an inner reinforcement plate 503 and an outer reinforcement plate 502. The inner reinforcement plate 503 and the outer reinforcement plate 502 are provided at both ends of the second cross beam body 501. One end of the inner reinforcement plate 503 is connected to the second cross beam body 501, and the other end of the inner reinforcement plate 503 is fixedly connected to the inner side of the outer reinforcement plate 502. The outer side of the outer reinforcement plate 502 is connected to the belly surface of the left longitudinal beam 1 and the right longitudinal beam 6. The upper end of the outer reinforcement plate 502 is connected to the upper wing surface of the left longitudinal beam 1 and the right longitudinal beam 6.

[0039] The second crossbeam body 501 has a square crossbeam structure, which can better reserve space for the bottom of the frame, increase the ground clearance of the power battery housing, and ensure the safety of the entire vehicle while ensuring the impact strength and torsional stiffness of the frame and satisfying the state mode.

[0040] The first cross beam 2 is provided with a first reinforcing plate 202 , and the second cross beam is provided with an inner reinforcing plate 503 and an outer reinforcing plate 502 , so as to meet the requirements of the power battery pack 3 in terms of impact load and torsional stiffness.

[0041] The first crossbeam 2 is a "Π"-shaped structure, and the upper cover 301 is provided with a raised portion located at the lower end of the first crossbeam 2; the second crossbeam body 501 is a square structure.

[0042] By integrating the shell 302 of the power battery pack 3 on the vehicle frame, and since the battery cells are encapsulated in the shell 302, a protrusion is provided on the upper cover 301, and the protrusion is connected to the shell 302, so that the upper cover 301 is installed on the shell 302, and the upper cover 301 is provided on the inner side of the left longitudinal beam 1 and the right longitudinal beam 6, and the first cross beam 2 is a "Π"-shaped structure, so that the protrusion provided on the upper cover 301 passes through the bottom of the left longitudinal beam 1 and the right longitudinal beam 6, so that it is located at the lower end of the first cross beam 2 of the "Π"-shaped structure, making the structure compact, increasing the ground clearance of the power battery pack 3, and improving the collision safety performance of the power battery of the whole vehicle.

[0043] The cross-sections of the left longitudinal beam 1 and the right longitudinal beam 6 are both "C"-shaped structures; the left longitudinal beam 1 and the right longitudinal beam 6 are also provided with a plurality of upper attachment connecting plates 8, and the upper attachment connecting plates 8 are connected to the upper attachment.

[0044] Since the power battery pack 3 and the vehicle frame are of an integrated design, it is impossible to install riding bolts when assembling the upper installation. Therefore, an upper installation connecting plate 8 is provided on the outer side of the left longitudinal beam 1 and the right longitudinal beam 6. The upper installation connecting plate 8 is connected to the vehicle frame using riding bolts to ensure the connection strength of the upper installation and improve the adaptability of the upper installation.

[0045] A light truck comprises any of the above CTC new energy light truck power battery frame integrated structures, wherein the light truck is a CTC new energy light truck.

Claims

1. A CTC new energy light truck power battery frame integrated structure, characterized in that: The invention comprises a vehicle frame, wherein the vehicle frame is provided with a power battery pack (3), the vehicle frame comprises a plurality of cross beams, a left longitudinal beam (1) and a right longitudinal beam (6), the left longitudinal beam (1) and the right longitudinal beam (6) are connected via the cross beam, the left longitudinal beam (1) is provided with a battery pack fixing bracket (7), the upper end of the battery pack fixing bracket (7) is connected to the left longitudinal beam (1) via a fixing bolt (10), the lower end of the battery pack fixing bracket (7) is connected to a battery pack mounting bracket (4) via a connecting bolt (9), and the battery pack mounting bracket (4) is provided with the power battery pack (3).

2. According to claim 1, the CTC new energy light truck power battery frame integrated structure is characterized in that: The battery pack mounting bracket (4) comprises a connecting plate (401) and a mounting reinforcement plate (402), wherein the connecting plate (401) is a "U"-shaped structure, the connecting plate (401) is fixedly connected to the mounting reinforcement plate (402), and the battery pack fixing bracket (7) is a "J"-shaped structure.

3. The CTC new energy light truck power battery frame integrated structure according to claim 2 is characterized in that: The connecting plate (401) is connected to the battery pack fixing bracket (7) via connecting bolts (9), and the mounting reinforcement plate (402) is connected to the power battery pack (3) via connecting bolts (9).

4. The CTC new energy light truck power battery frame integrated structure according to claim 3 is characterized in that: The power battery pack (3) comprises an upper cover (301), a shell (302) and a battery cell, wherein the battery cell is packaged in the shell (302), the upper cover (301) is arranged at the upper end of the shell (302), the upper cover (301) is provided with a raised portion, and the raised portion is located at the lower end of the crossbeam; the mounting reinforcement plate (402) is fixedly connected to the shell (302).

5. The CTC new energy light truck power battery frame integrated structure according to claim 4 is characterized in that: The cross beam comprises a first cross beam (2) and a second cross beam (5), the first cross beam (2) is at least two groups, and the left longitudinal beam (1) and the right longitudinal beam (6) are fixedly connected via the first cross beam (2) and the second cross beam (5).

6. The CTC new energy light truck power battery frame integrated structure according to claim 5 is characterized in that: The first cross beam (2) comprises a first cross beam body (201) and a first reinforcing plate (202); the first cross beam body (201) is provided with the first reinforcing plate (202) at the upper end; the first cross beam body (201) is connected to the ventral surface of the left longitudinal beam (1) and the right longitudinal beam (6); and the first reinforcing plate (202) is connected to the upper wing surface of the left longitudinal beam (1) and the right longitudinal beam (6).

7. The CTC new energy light truck power battery frame integrated structure according to claim 5 is characterized in that: The second cross beam (5) comprises a second cross beam body (501), an inner reinforcing plate (503) and an outer reinforcing plate (502); the inner reinforcing plate (503) and the outer reinforcing plate (502) are provided at both ends of the second cross beam body (501); one end of the inner reinforcing plate (503) is connected to the second cross beam body (501); the other end of the inner reinforcing plate (503) is fixedly connected to the inner side of the outer reinforcing plate (502); the outer side of the outer reinforcing plate (502) is connected to the ventral surface of the left longitudinal beam (1) and the right longitudinal beam (6); the upper end of the outer reinforcing plate (502) is connected to the upper wing surface of the left longitudinal beam (1) and the right longitudinal beam (6).

8. The CTC new energy light truck power battery frame integrated structure according to claim 5 is characterized in that: The first crossbeam (2) is a "Π"-shaped structure, and the raised portion provided on the upper cover (301) is located at the lower end of the first crossbeam (2); the second crossbeam body (501) is a square structure.

9. The CTC new energy light truck power battery frame integrated structure according to claim 5 is characterized in that: The cross-sections of the left longitudinal beam (1) and the right longitudinal beam (6) are both "C"-shaped structures; The left longitudinal beam (1) and the right longitudinal beam (6) are also provided with a plurality of upper mounting connecting plates (8), and the upper mounting connecting plates (8) are connected to the upper mounting.

10. A light truck, comprising the CTC new energy light truck power battery frame integrated structure according to any one of claims 1 to 9, characterized in that: The light truck is a CTC new energy light truck.

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