Back type power battery frame and new energy commercial vehicle

Abstract

The invention relates to a back type power battery frame and a new energy commercial vehicle. A battery pack frame assembly comprises a bottom frame and a supporting frame; the supporting frame is arranged on the bottom frame along the vertical direction to form a multi-layer supporting structure for accommodating a plurality of battery boxes; the battery pack frame assembly is in bolted connection with the frame longitudinal beam through the front connecting plate, the middle connecting plate and the rear connecting plate; the battery pack frame assembly is in bolted connection with the battery box; the battery box is arranged on the battery pack frame assembly, and the battery pack frame assembly is arranged on the vehicle frame, so that the safety of the vehicle can be improved, and meanwhile, the collision danger caused by side hanging of the battery is avoided; the main part of the battery pack frame assembly is made of magnesium-aluminum alloy, and on the premise that the safety of the whole vehicle is not changed, the performance of the whole vehicle and the hoisting safety are further improved by adopting a material lightweight mode.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy commercial vehicle parts, and in particular to a back-type power battery frame and a new energy commercial vehicle. Background Art

[0002] New energy commercial vehicle power batteries have become the key products of new energy vehicles due to their energy saving, environmental protection and low noise. In order to make vehicles more competitive in the market, lightweighting has become a very critical means. The back-mounted power battery brackets currently prevalent in the market are heavy and have poor hoisting safety. The side-mounted battery packs are easily hit by external objects, causing more serious damage to the power batteries. Summary of the invention

[0003] The purpose of the present invention is to provide a rear-mounted power battery frame and a new energy commercial vehicle in view of the deficiencies in the prior art.

[0004] The present invention is achieved by adopting the following technical solutions:

[0005] A back-type power battery frame includes a battery pack frame assembly; the battery pack frame assembly includes a bottom frame and a support frame;

[0006] The support frame is arranged on the bottom frame along the vertical direction to form a multi-layer support structure for accommodating multiple battery boxes.

[0007] As a further description of the invention, the bottom frame includes a bottom transverse beam and a bottom longitudinal beam; a plurality of bottom longitudinal beams are arranged between two of the bottom transverse beams.

[0008] As a further description of the invention, the support frame includes a supporting vertical beam, a supporting longitudinal beam, a frame connecting vertical beam and a raised transverse beam; a plurality of the supporting vertical beams are respectively arranged on the outer sides of both ends of the two bottom transverse beams, two frame connecting vertical beams are respectively arranged on the outer sides in the middle of the two bottom transverse beams, and a plurality of the raised transverse beams are respectively arranged on the inner sides of the supporting vertical beams on the left and right sides and the frame connecting vertical beams along the vertical direction; a plurality of the supporting longitudinal beams are arranged between the two raised transverse beams at the same height.

[0009] As a further description of the invention, the raised transverse beam includes an inverted U-shaped member and a U-shaped member; a plurality of the U-shaped members are arranged on the inner side of the inverted U-shaped member.

[0010] As a further description of the invention, the bottom frame and the support frame are made of aluminum-magnesium alloy.

[0011] A new energy commercial vehicle comprises a rear-mounted power battery frame as described above, and also comprises a frame longitudinal beam, a front connecting plate, a middle connecting plate and a rear connecting plate; the battery pack frame assembly is bolted to the frame longitudinal beam through the front connecting plate, the middle connecting plate and the rear connecting plate respectively, and the battery pack frame assembly is bolted to the battery box.

[0012] As a further illustration of the invention, the front connecting plate and the rear connecting plate are "C" shaped structures.

[0013] As a further illustration of the invention, the cross section of the middle connecting plate is an "L"-shaped structure.

[0014] As a further description of the invention, the front connecting plate, the middle connecting plate and the rear connecting plate are made of sheet metal bending parts or stamping parts.

[0015] Compared with the prior art, the present invention has the following beneficial technical effects:

[0016] The present invention arranges the battery box on the battery pack frame assembly, and arranges the battery pack frame assembly on the vehicle frame, which can improve the safety of the vehicle and avoid the impact risk caused by the side hanging of the battery; the main part of the battery pack frame assembly is made of magnesium-aluminum alloy. Under the premise of ensuring the safety of the whole vehicle, the performance of the whole vehicle and the safety of lifting are further improved by adopting a lightweight material method. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the battery pack frame assembly structure of the present invention;

[0019] Figure 3 This is a schematic diagram of the structure of the elevated transverse beam of the present invention;

[0020] Figure 4 It is a schematic diagram of the structure of the middle connecting plate of the present invention;

[0021] Figure 5 It is a schematic diagram of the structure of the front connecting plate of the present invention.

[0022] In the figure, 1. middle connecting plate; 2. front connecting plate; 3. battery pack frame assembly; 4. vehicle frame; 5. rear connecting plate; 6. battery box; 31. bottom frame; 32. supporting frame; 311. bottom transverse beam; 312. bottom longitudinal beam; 321. supporting vertical beam; 322. supporting longitudinal beam; 323. vehicle frame connecting vertical beam; 324. raising transverse beam. DETAILED DESCRIPTION

[0023] like Figure 1-5As shown, the present invention provides a back-type power battery frame, including a battery pack frame assembly 3; the battery pack frame assembly 3 includes a bottom frame 31 and a support frame 32;

[0024] The support frame 32 is vertically arranged on the bottom frame 31 to form a multi-layer support structure for accommodating a plurality of battery boxes 6 . The height is determined by the battery boxes 6 .

[0025] The bottom frame 31 includes a bottom transverse beam 311 and a bottom longitudinal beam 312 ; a plurality of bottom longitudinal beams 312 are disposed between the two bottom transverse beams 311 .

[0026] The support frame 32 includes a support vertical beam 321, a support longitudinal beam 322, a frame connecting vertical beam 323 and a raised transverse beam 324; a plurality of support vertical beams 321 are respectively arranged on the outer sides of the two ends of the two bottom transverse beams, two frame connecting vertical beams 323 are respectively arranged on the outer sides of the middle of the two bottom transverse beams, and a plurality of raised transverse beams 324 are respectively arranged on the inner sides of the left and right support vertical beams 321 and the frame connecting vertical beams 323 along the vertical direction; a plurality of support longitudinal beams 322 are arranged between the two raised transverse beams 324 of the same height. The fixing method can be welding.

[0027] The raised transverse beam 324 includes an inverted U-shaped member and a U-shaped member; a plurality of U-shaped members are arranged inside the inverted U-shaped member.

[0028] The bottom frame 31 and the support frame 32 are made of aluminum-magnesium alloy. The main part of the battery pack frame assembly 3 is made of aluminum-magnesium alloy. Under the premise of ensuring the safety of the whole vehicle, the material is lightweight to further improve the performance of the whole vehicle and the safety of lifting to meet customer needs.

[0029] like Figure 1-5 As shown, the present invention also provides a new energy commercial vehicle, including the back-type power battery frame as described above, and also including a frame longitudinal beam, a front connecting plate 2, a middle connecting plate 1 and a rear connecting plate 5; the battery pack frame assembly 3 is bolted to the longitudinal beam of the frame 4 through the front connecting plate 2, the middle connecting plate 1 and the rear connecting plate 5, respectively, and the battery pack frame assembly 3 is bolted to the battery box 6. Bolt connection is convenient and quick to install, and the assembly process is simpler and more efficient. The battery box 6 is located inside the battery pack frame assembly 3, and the battery pack frame assembly 3 is arranged on the upper side of the frame 4, that is, the battery pack frame assembly 3 is behind the cab, which can improve the safety of the vehicle and avoid the risk of collision caused by the side hanging of the battery.

[0030] The front connecting plate 2 and the rear connecting plate 5 on the same frame longitudinal beam are symmetrical parts. The front connecting plate and the rear connecting plate are "C"-shaped structures. The flanges on both sides can effectively prevent the vehicle from tilting forward or backward in emergency braking when the center of gravity of the vehicle is too high due to too many power batteries.

[0031] The cross section of the middle connecting plate 1 is an "L" shaped structure. The "L" shaped structure saves the most materials under the same load conditions and is easy to process, meeting the lightweight requirements.

[0032] The front connecting plate 2, the middle connecting plate 1 and the rear connecting plate 5 are made of sheet metal bending parts or stamping parts.

[0033] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A back-type power battery frame, characterized in that: Comprising a battery pack frame assembly; the battery pack frame assembly comprises a bottom frame and a support frame; The support frame is arranged on the bottom frame along the vertical direction to form a multi-layer support structure for accommodating multiple battery boxes.

2. The back-type power battery frame according to claim 1, characterized in that: The support frame includes: the bottom frame includes a bottom transverse beam and a bottom longitudinal beam; a plurality of bottom longitudinal beams are arranged between two bottom transverse beams.

3. The back-type power battery frame according to claim 2, characterized in that: The support frame includes a supporting vertical beam, a supporting longitudinal beam, a frame connecting vertical beam and a raised transverse beam; a plurality of the supporting vertical beams are respectively arranged on the outer sides of both ends of the two bottom transverse beams, two frame connecting vertical beams are respectively arranged on the outer sides in the middle of the two bottom transverse beams, and a plurality of the raised transverse beams are respectively arranged along the vertical direction on the inner sides of the supporting vertical beams on the left and right sides and the frame connecting vertical beams; a plurality of the supporting longitudinal beams are arranged between the two raised transverse beams at the same height.

4. The back-type power battery frame according to claim 3, characterized in that: The raised transverse beam comprises an inverted U-shaped piece and a U-shaped piece; a plurality of the U-shaped pieces are arranged inside the inverted U-shaped piece.

5. The back-type power battery frame according to claim 4, characterized in that: The bottom frame and the support frame are made of aluminum-magnesium alloy.

6. A new energy commercial vehicle, comprising a back-type power battery frame as described in any one of claims 1 to 5, characterized in that: It also includes a frame longitudinal beam, a front connecting plate, a middle connecting plate and a rear connecting plate; the battery pack frame assembly is bolted to the frame longitudinal beam through the front connecting plate, the middle connecting plate and the rear connecting plate respectively, and the battery pack frame assembly is bolted to the battery box.

7. The new energy commercial vehicle according to claim 6, characterized in that: The front connecting plate and the rear connecting plate are "C" shaped structures.

8. The new energy commercial vehicle according to claim 7, characterized in that: The cross section of the middle connecting plate is an "L" shaped structure.

9. The new energy commercial vehicle according to claim 8, characterized in that: The front connecting plate, the middle connecting plate and the rear connecting plate are formed by bending sheet metal parts or stamping parts.

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