Power battery box body for new energy truck

Abstract

The invention discloses a power battery box body for a new energy truck, which comprises a middle bottom plate, two partition beams protruding upwards are integrally arranged on the middle bottom plate, and a front beam, a side edge beam and a rear beam are sequentially arranged in the circumferential direction of the middle bottom plate through friction welding to form a cuboid box body. The cuboid box body is divided into three battery mounting grooves by the left side beam, the right side beam and the middle bottom plate, module mounting reinforcing blocks are arranged at the two ends in each battery mounting groove, and the module mounting reinforcing blocks are close to the front beam and the rear beam respectively. The new energy truck power battery box has the beneficial effects that the quadrilateral beams are made of extruded aluminum profiles and have very high strength and hardness, and meanwhile, the strength of the new energy truck power battery box can be effectively enhanced by arranging a plurality of module mounting reinforcing blocks, so that the problem that the box is damaged due to torsion of the battery box in places with complex working conditions is solved, and the service life of the battery box is prolonged. And the strength, the torsion resistance and the safety of the box body are improved on the premise of meeting the use performance of the battery box body.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile battery boxes, and in particular to a power battery box for new energy trucks. Background Art

[0002] Nationwide, by the end of September 2023, the number of new energy vehicles in use reached 18.21 million, of which new energy trucks, as an important component, have increased in number and reflected the development trend of the new energy vehicle industry. Especially in the field of new energy logistics vehicles, with the advancement of technology and the improvement of infrastructure, the market share of new energy trucks has gradually increased, providing the logistics industry with more environmentally friendly and efficient transportation solutions.

[0003] The main driving mode of new energy vehicles is electric drive, which drives the vehicle's motor through the power battery to achieve the purpose of vehicle driving. Unlike the battery of fuel vehicles, the main purpose of the power battery is to provide power for a continuous period of time and support cyclic charging. Among them, the working environment of new energy trucks is relatively complex, and the power battery of new energy trucks needs better protection. Therefore, a new energy truck power battery box is proposed, which has improved strength and safety. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a power battery box for new energy trucks, which has the technical advantages of high strength and good safety.

[0005] The technical scheme is as follows: A power battery box for new energy trucks, the main points of which are that it includes an intermediate bottom plate, two upwardly protruding partition beams are integrally arranged on the intermediate bottom plate, and a front beam, a side beam and a rear beam are sequentially arranged by friction welding on the circumference of the intermediate bottom plate to form a rectangular box, wherein the side beam includes a left beam and a right beam, and the left beam, the right beam and the intermediate bottom plate divide the rectangular box into three battery installation slots, and module installation reinforcement blocks are arranged at both ends of all the battery installation slots, and the module installation reinforcement blocks are respectively close to the front beam and the rear beam. The above structure is adopted, and friction welding is used, which has the advantages of high efficiency, environmental protection, and low cost, and the strength of the friction welding joint is higher than that of the traditional welding method, which can avoid metal deformation and prevent the power battery from being in the battery installation slot. At the same time, multiple module installation reinforcement blocks are arranged in the battery installation slot, which can effectively strengthen the strength of the power battery box of the new energy truck, solve the problem that the battery box is torsion in a place with complex working conditions, resulting in damage to the box, and improve the strength, anti-torsion ability and safety of the box under the premise of meeting the performance of the battery box.

[0006] Preferably, the middle bottom plate includes a bottom plate and a partition beam integrally arranged on the bottom plate, the middle bottom plate is in a "U"-shaped structure, the bottom plate extends outwardly from the partition beam, and the cross section of the partition beam is in a cross-shaped structure. With the above structure, the partition beam of the cross-shaped structure is not easy to bend, thereby improving the strength of the middle bottom plate, and the bottom plate extends outwardly to facilitate connection with the side beams on the left and right sides.

[0007] Preferably, the middle bottom plate further comprises three cross beams formed by integral extrusion, and the three cross beams are respectively located at the outside and the middle of the partition beam. With the above structure, the integral extrusion structure is easy to manufacture, and the cross beams further increase the strength and torsional capacity of the battery box, thereby improving the safety of the battery box.

[0008] Preferably, the side beam includes a side cross beam and a transition plate integrally arranged at the bottom of the side cross beam, the transition plate extends toward the middle bottom plate, and the cross section of the side cross beam is a plum blossom structure. With the above structure, the plum blossom reinforced extruded aluminum profile not only increases the strength and rigidity of the material, but also improves the overall load-bearing capacity, so that the battery box has a very high strength.

[0009] Preferably, a plurality of mounting block holes are provided on the side cross beam at equal intervals, the mounting block holes penetrate the side cross beam longitudinally, and mounting blocks are installed in the mounting block holes. With the above structure, the mounting blocks are connected to the battery box, which can effectively fix the battery and prevent the battery from moving or vibrating on the external components. This connection method usually does not occupy the internal space of the battery box, thereby improving the space utilization of the battery box.

[0010] As a preferred embodiment, a connecting plate is provided between the middle bottom plate and the side beams. With the above structure, the connecting plate is equivalent to a transition connecting plate, and the left beam and the right beam are welded to the middle bottom plate to form a whole.

[0011] Preferably, the battery mounting slot includes a first battery mounting slot, a second battery mounting slot and a third battery mounting slot in sequence, and the first module mounting reinforcement block and the sixth module mounting reinforcement block are respectively installed at the front and rear ends of the first battery mounting slot, the second module mounting reinforcement block and the fifth module mounting reinforcement block are respectively installed at the front and rear ends of the second battery mounting slot, and the third module mounting reinforcement block and the fourth module mounting reinforcement block are respectively installed at the front and rear ends of the third battery mounting slot. With the above structure, multiple module mounting reinforcement blocks further enhance the overall strength of the battery box to avoid breaking during use, thereby damaging the battery.

[0012] As a preferred embodiment: the first module installation reinforcement block and the third module installation reinforcement block adopt the same structure, and multiple reinforcing ribs are cross-arranged inside them. The first module installation reinforcement block and the third module installation reinforcement block are respectively welded to the side of the transition plate of the side beam close to the side cross beam. With the above structure, the internal structure of the first module installation reinforcement block and the third module installation reinforcement block is more complicated, and the multiple cross-arranged reinforcing ribs can increase the strength of the first and third module installation reinforcement blocks.

[0013] As a preference: the rest of the module installation reinforcement blocks adopt the same structure, which is a transverse tube structure, and are provided with reinforcement ribs parallel thereto inside, and the rest of the module installation reinforcement blocks are clamped between the battery installation slots;

[0014] The first module installation reinforcement block, the second module installation reinforcement block and the third module installation reinforcement block are all located between the cross beam and the front beam. With the above structure, two different types of module installation reinforcement blocks cooperate with the cross beam to jointly improve the strength and torque resistance of the battery box.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the various parts of the battery box can be welded together efficiently and environmentally friendly; the four-side beams are made of extruded aluminum profiles with high strength and hardness; and a plurality of module installation reinforcement blocks are provided to effectively enhance the strength of the power battery box of new energy trucks, thereby solving the problem of the battery box being damaged due to twisting in places with complex working conditions, and improving the strength, anti-torsion ability and safety of the box while meeting the performance of the battery box. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention;

[0017] Figure 2 for Figure 1 A top view of

[0018] Figure 3 It is a schematic diagram of the structure of the middle bottom plate 5 and the cross beam 503;

[0019] Figure 4 The schematic diagram of the structure of the side beam 3 is shown in FIG.

[0020] Figure 5 It is a schematic diagram of the structure of the side beam 3 and the middle bottom plate 5;

[0021] Figure 6 for Figure 3 Bottom view of . DETAILED DESCRIPTION

[0022] The present invention is further described below in conjunction with embodiments and drawings.

[0023] like Figure 1 and Figure 2 As shown, a power battery box for a new energy truck includes a middle bottom plate 5, on which two upwardly protruding partition beams 501 are integrally arranged, and a front beam 1, a side beam 3 and a rear beam 2 are sequentially arranged by friction welding in the circumferential direction of the middle bottom plate 5 to form a rectangular box, wherein the side beam 3 includes a left beam 4 and a right beam 11, and the left beam 4, the right beam 11 and the middle bottom plate 5 divide the rectangular box into three battery installation slots 6, and module installation reinforcement blocks 7 are arranged at both ends of all the battery installation slots 6, and the module installation reinforcement blocks 7 are respectively close to the front beam 1 and the rear beam 2.

[0024] like Figure 3 As shown, the middle bottom plate 5 includes a bottom plate 502 and a partition beam 501 integrally arranged on the bottom plate 502, the middle bottom plate 5 is in a "U"-shaped structure, the bottom plate 502 extends to the outside of the partition beam 501, the cross section of the partition beam 501 is in a cross-shaped structure, the middle bottom plate 5 also includes three cross beams 503 integrally extruded, the three cross beams 503 are respectively located on the outside and the middle of the partition beam 501, the middle bottom plate 5 and the cross beam 9 are an integrally extruded structure, the integrally extruded structure is easy to process and manufacture, can further increase the strength and torsional capacity of the battery box, and improve the safety of the battery box.

[0025] like Figure 4 As shown, the side beam 3 includes a side cross beam 301 and a transition plate 302 integrally arranged at the bottom of the side cross beam 301, the transition plate 302 extends to the middle bottom plate 5, the cross section of the side cross beam 301 is a plum blossom structure, and a plurality of mounting block holes 303 are equidistantly arranged on the side cross beam 301, the mounting block holes 303 longitudinally penetrate the side cross beam 301, and a mounting block 10 is installed in the mounting block hole 303, and the mounting block 10 can effectively fix the battery by connecting with the battery box to prevent the battery from moving or vibrating on the external components. This connection method usually does not occupy the internal space of the battery box, thereby improving the space utilization of the battery box.

[0026] The front beam 1 and the rear beam 2 are made of extruded aluminum profiles, and the side beams 3 are made of plum blossom reinforced extruded aluminum profiles. The extruded aluminum profiles have high strength and hardness and can withstand greater pressure and loads. At the same time, compared with other metal materials, they have lower density and weight, are easy to carry and install, and have good processing performance. The cross-sectional design of the plum blossom reinforced extruded aluminum profile has a hole and side strip structure similar to the plum blossom shape. This design not only increases the strength and rigidity of the material, but also improves the overall load-bearing capacity, so that this aluminum profile can maintain good structural integrity when subjected to heavy pressure or impact.

[0027] like Figure 5 and Figure 6 As shown, a connecting plate 8 is provided between the middle bottom plate 5 and the side beam 3, and the connecting plate 8 plays a transition role, connecting the middle bottom plate 5 and the side beam 3 into a whole, and then connecting the front beam 1 and the rear beam 2 at the front and rear ends respectively to form a battery box.

[0028] like Figure 1 and Figure 2 As shown, the battery mounting slot 6 includes a first battery mounting slot 601, a second battery mounting slot 602 and a third battery mounting slot 603 in sequence, and a first module mounting reinforcement block 701 and a sixth module mounting reinforcement block 706 are respectively installed at the front and rear ends of the first battery mounting slot 601, a second module mounting reinforcement block 702 and a fifth module mounting reinforcement block 705 are respectively installed at the front and rear ends of the second battery mounting slot 602, and a third module mounting reinforcement block 703 and a fourth module mounting reinforcement block 704 are respectively installed at the front and rear ends of the third battery mounting slot 603.

[0029] The first module installation reinforcement block 701 and the third module installation reinforcement block 703 adopt the same structure, and multiple reinforcement ribs are cross-arranged inside. The first module installation reinforcement block 701 and the third module installation reinforcement block 703 are respectively welded to the side of the transition plate 302 of the side beam 3 close to the side cross beam 301. The remaining module installation reinforcement blocks 7 adopt the same structure, which is a transverse tube structure, and reinforcement ribs parallel to it are arranged inside. The remaining module installation reinforcement blocks 7 are stuck between the battery installation grooves 6; the first module installation reinforcement block 701, the second module installation reinforcement block 702 and the third module installation reinforcement block 703 are all located between the cross beam 503 and the front beam 1. The module installation reinforcement block 7 and the side beam together improve the strength of the battery box to avoid breakage during use. Brackets 9 are arranged on the third groove 603 and the first groove 601 between the fourth module installation reinforcement block 704 and the sixth module installation reinforcement block 706 and the rear beam 2.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present invention. Under the guidance of the present invention, ordinary technicians in this field can make various similar expressions without violating the purpose and claims of the present invention, and such changes all fall within the scope of protection of the present invention.

Claims

1. A power battery box for a new energy truck, characterized in that: The invention comprises an intermediate bottom plate (5), on which two upwardly protruding partition beams (501) are integrally arranged, and a front beam (1), a side beam (3) and a rear beam (2) are sequentially arranged by friction welding in the circumferential direction of the intermediate bottom plate (5) to form a rectangular parallelepiped box body, wherein the side beam (3) includes a left beam (4) and a right beam (11), and the left beam (4), the right beam (11) and the intermediate bottom plate (5) divide the rectangular parallelepiped box body into three battery installation slots (6), and module installation reinforcement blocks (7) are arranged at both ends of all the battery installation slots (6), and the module installation reinforcement blocks (7) are respectively close to the front beam (1) and the rear beam (2).

2. A power battery box for a new energy truck according to claim 1, characterized in that: The intermediate bottom plate (5) comprises a bottom plate (502) and a partition beam (501) integrally arranged on the bottom plate (502); the intermediate bottom plate (5) is in a "U"-shaped structure; the bottom plate (502) extends outwardly of the partition beam (501); and the cross section of the partition beam (501) is in a cross-shaped structure.

3. A power battery box for a new energy truck according to claim 2, characterized in that: The intermediate bottom plate (5) further comprises three cross beams (503) which are integrally extruded and formed, and the three cross beams (503) are respectively located at the outside and the middle of the partition beam (501).

4. A power battery box for a new energy truck according to claim 1, characterized in that: The side beam (3) comprises a side cross beam (301) and a transition plate (302) integrally arranged at the bottom of the side cross beam (301); the transition plate (302) extends toward the middle bottom plate (5); and the cross section of the side cross beam (301) is a plum blossom-shaped structure.

5. A power battery box for a new energy truck according to claim 4, characterized in that: A plurality of mounting block holes (303) are equidistantly arranged in sequence on the side cross beam (301); the mounting block holes (303) penetrate the side cross beam (301) longitudinally; and mounting blocks (10) are installed in the mounting block holes (303).

6. A power battery box for new energy trucks according to claim 2 or 4, characterized in that: A connecting plate (8) is provided between the middle bottom plate (5) and the side beam (3).

7. A power battery box for new energy trucks according to claim 1 or 2, characterized in that: The battery installation slot (6) comprises a first battery installation slot (601), a second battery installation slot (602) and a third battery installation slot (603) in sequence; a first module installation reinforcement block (701) and a sixth module installation reinforcement block (706) are respectively installed at the front and rear ends of the first battery installation slot (601); a second module installation reinforcement block (702) and a fifth module installation reinforcement block (705) are respectively installed at the front and rear ends of the second battery installation slot (602); and a third module installation reinforcement block (703) and a fourth module installation reinforcement block (704) are respectively installed at the front and rear ends of the third battery installation slot (603).

8. A power battery box for a new energy truck according to claim 7, characterized in that: The first module installation reinforcement block (701) and the third module installation reinforcement block (703) have the same structure, and a plurality of reinforcement ribs are cross-arranged inside the first module installation reinforcement block (701) and the third module installation reinforcement block (703) are respectively welded to a side of the transition plate (302) of the side beam (3) close to the side cross beam (301).

9. A power battery box for a new energy truck according to claim 7 or 8, characterized in that: The remaining module installation reinforcement blocks (7) adopt the same structure, which is a transverse tube structure, and are provided with reinforcement ribs parallel thereto inside, and the remaining module installation reinforcement blocks (7) are clamped between the battery installation slots (6); The first module installation reinforcement block (701), the second module installation reinforcement block (702) and the third module installation reinforcement block (703) are all located between the cross beam (503) and the front beam (1).

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