Power battery and frame integrated structure of new energy commercial vehicle

Abstract

The invention relates to a new energy commercial vehicle power battery and frame integrated structure, which comprises a frame, the frame is provided with a bottom plate, the lower end of the bottom plate is fixedly connected with the lower wing surface of the frame, the upper end of the bottom plate is provided with a plurality of battery monomers, the battery monomers are connected in series and in parallel through connecting plates to form a battery pack, and the upper end of the frame is provided with a top plate. The top plate is fixedly connected with the upper wing surface of the frame; cooling water channels are formed in the bottom plate and the top plate; the defects that in the prior art, a battery is arranged on the side face of a vehicle frame or the rear portion of a cab, the occupied space is large, and the power battery is arranged on the side face and is prone to being impacted by external objects, so that the power battery is damaged more seriously are overcome.

Description

Technical Field

[0001] The present invention relates to the field of vehicle control technology, and in particular to an integrated structure of a power battery and a vehicle frame for a new energy commercial vehicle. Background Art

[0002] New energy commercial vehicles have become the key products of new energy vehicles due to their energy saving, environmental protection and low noise. At present, the power battery is basically arranged on the side of the frame or behind the cab. In order to meet the requirements of driving range, the power battery needs a larger power and occupies a large space in the vehicle. This will inevitably affect the layout of other parts of the vehicle, and the chassis versatility is poor; the power battery is arranged on the side, and it is also prone to impact by external objects, causing more serious damage to the power battery. If the power battery is arranged on the inside of the frame and integrated with the frame, it will have great benefits for the use of upper space, modification, expansion of charging capacity, chassis versatility and other product advantages; compared with the arrangement on the side of the frame and the rear of the cab, the integration is high, and it is easy to achieve platformization and lightweight. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide an integrated structure of a power battery and a frame for a new energy commercial vehicle, thereby overcoming the defects in the prior art that the battery is arranged on the side of the frame or behind the cab, which occupies a large space, and the power battery is arranged on the side, which is also easily hit by external objects, causing more serious damage to the power battery.

[0004] In order to solve the problems in the above background technology, the present invention is implemented by the following technical solutions:

[0005] A new energy commercial vehicle power battery and frame integrated structure, including a frame, the frame is provided with a bottom plate, the lower end of the bottom plate is fixedly connected to the lower wing surface of the frame, the upper end of the bottom plate is provided with a plurality of battery cells, and the plurality of battery cells are connected in series or in parallel or in series and parallel through a connecting plate to form a battery pack, the upper end of the frame is provided with a top plate, the top plate is fixedly connected to the upper wing surface of the frame, and the bottom plate and the top plate are both provided with cooling water channels.

[0006] Preferably, a front plate and a rear plate are respectively provided at the front and rear ends of the frame, and the front plate and the rear plate are respectively fixedly connected to the upper wing surface, the lower wing surface, the bottom plate and the top plate of the frame.

[0007] Preferably, the bottom plate is provided with a limiting block, and the plurality of battery cells are respectively bonded to the upper end of the bottom plate by means of a heat-conducting structural adhesive and are limited by the limiting block.

[0008] Preferably, the front plate is provided with high and low voltage connectors and cooling joints, the high and low voltage connectors are connected to the battery pack respectively, and the cooling joints are connected to cooling water channels provided on the bottom plate and the top plate.

[0009] Preferably, the connecting plate is a "J"-shaped buffer structure, and two ends of the connecting plate are respectively connected to adjacent battery cells.

[0010] Preferably, a plurality of the battery cells are connected in series via a connecting plate: the two ends of the connecting plate are respectively connected to the positive electrode and the negative electrode of the adjacent battery cells;

[0011] A plurality of battery cells are connected in parallel via a connecting plate: two ends of the connecting plate are respectively connected to the positive poles or negative poles of adjacent battery cells.

[0012] Preferably, the connecting plate is made of aluminum, copper or an aluminum-copper composite material.

[0013] Preferably, the front plate, rear plate, bottom plate and top plate are all made of aluminum alloy.

[0014] Compared with the prior art, the present invention has the following beneficial technical effects:

[0015] The battery cell is integrated with the frame. The high integration can effectively save vehicle space and avoid the impact risk caused by the side hanging of the battery. The battery cell, bottom plate, top plate, front plate and rear plate are welded together with the frame. The force distribution is uniform and they reinforce each other. The number of parts can be reduced to the maximum extent. While meeting the carrying capacity of the whole vehicle, the whole vehicle is lightweight and meets the needs of maximizing customer benefits.

[0016] The connecting plate has a "J"-shaped structure, which can buffer the adverse effects of expansion or contraction of the battery cells due to the charging or discharging characteristics. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 2 A schematic diagram of the connection structure between a battery cell and a connection plate of the present invention;

[0019] Figure 3 It is a structural schematic diagram of the connecting plate of the present invention;

[0020] Figure 4 It is a structural schematic diagram of the frame of the present invention;

[0021] Figure 5 It is a structural schematic diagram of the bottom plate of the present invention;

[0022] Figure 6 It is a structural schematic diagram of the top plate of the present invention;

[0023] Figure 7 It is a structural schematic diagram of the front plate of the present invention;

[0024] Figure 8 It is a structural schematic diagram of the rear plate of the present invention;

[0025] Fig. 9 It is a schematic diagram of the overall structure of the present invention.

[0026] Reference numerals:

[0027] 1. Front plate; 2. Bottom plate; 21. Limit block; 3. Frame; 4. Battery cell; 5. Rear plate; 6. Top plate; 7. Connecting plate. DETAILED DESCRIPTION

[0028] like Figure 1-Figure 9 As shown, a new energy commercial vehicle power battery and frame integrated structure includes a frame 3, the frame 3 is provided with a bottom plate 2, the lower end of the bottom plate 2 is fixedly connected to the lower wing surface of the frame 3, a plurality of battery cells 4 are provided at the upper end of the bottom plate 2, and the plurality of battery cells 4 are connected in series or in parallel or in series and parallel through a connecting plate 7 to form a battery pack, a top plate 6 is provided at the upper end of the frame 3, the top plate 6 is fixedly connected to the upper wing surface of the frame 3, and both the bottom plate 2 and the top plate 6 are provided with cooling water channels.

[0029] The battery cell 4 is fixed in the middle of the frame 3 through the bottom plate 2, integrating the power battery system with the frame 3. The high integration can effectively save vehicle space and avoid the impact risk caused by the side hanging of the battery.

[0030] The number of battery cells 4 is configured according to the required voltage and power of the vehicle, and the number is 15-10,000. Under the premise of meeting the performance of the vehicle, the platform compatibility design is carried out;

[0031] In this embodiment, the number of battery cells 4 is preferably 168.

[0032] A front plate 1 and a rear plate 5 are respectively provided at the front and rear ends of the frame 3 , and the front plate 1 and the rear plate 5 are respectively fixedly connected to the upper wing surface, the lower wing surface, the bottom plate 2 and the top plate 6 of the frame 3 .

[0033] The front plate 1 and the rear plate 5 are respectively connected to the upper wing surface, the lower wing surface, the bottom plate 2 and the top plate 6 of the frame 3 by welding to ensure the overall strength and sealing requirements.

[0034] The bottom plate 2 is provided with a limiting block 21 , and a plurality of battery cells 4 are respectively bonded to the upper end of the bottom plate 2 by means of a heat-conducting structural adhesive and are limited by the limiting block 21 .

[0035] The front plate 1 is provided with high and low voltage connectors and cooling joints. The high and low voltage connectors are connected to the battery pack respectively, and the cooling joints are connected to the cooling water channels provided on the bottom plate 2 and the top plate 6.

[0036] The connecting plate 7 is a "J"-shaped buffer structure, and the two ends of the connecting plate 7 are respectively connected to adjacent battery cells.

[0037] The connecting plate 7 is a "J"-shaped structure, which can buffer the adverse effects of expansion or contraction of the battery cell 4 caused by the charging or discharging characteristics.

[0038] A plurality of battery cells 4 are connected in series via a connecting plate 7: two ends of the connecting plate 7 are respectively connected to the positive electrode and the negative electrode of the adjacent battery cells 4;

[0039] A plurality of battery cells 4 are connected in parallel via a connecting plate 7 : two ends of the connecting plate 7 are respectively connected to the positive pole or the negative pole of the adjacent battery cells 4 .

[0040] In a feasible embodiment, a plurality of battery cells 4 are connected in series and in parallel via the connecting plate 7 by first connecting a portion of the battery cells 4 in series and connecting the remaining battery cells 4 in parallel, and then connecting the battery cells 4 connected in series with the battery cells 4 connected in parallel.

[0041] The connecting plate 7 is made of aluminum, copper or an aluminum-copper composite material.

[0042] The front plate 1, the rear plate 5, the bottom plate 2 and the top plate 6 are all made of aluminum alloy.

Claims

1. An integrated structure of a power battery and a frame for a new energy commercial vehicle, characterized in that: The vehicle comprises a frame (3), wherein the frame (3) is provided with a bottom plate (2), the lower end of the bottom plate (2) is fixedly connected to the lower wing surface of the frame (3), the upper end of the bottom plate (2) is provided with a plurality of battery cells (4), the plurality of battery cells (4) are connected in series or in parallel or in series and in parallel via a connecting plate (7) to form a battery pack, the upper end of the frame (3) is provided with a top plate (6), the top plate (6) is fixedly connected to the upper wing surface of the frame (3), and the bottom plate (2) and the top plate (6) are both provided with cooling water channels.

2. The integrated structure of power battery and frame for new energy commercial vehicles according to claim 1 is characterized in that: The front and rear ends of the frame (3) are respectively provided with a front plate (1) and a rear plate (5), and the front plate (1) and the rear plate (5) are respectively fixedly connected to the upper wing surface, the lower wing surface, the bottom plate (2) and the top plate (6) of the frame (3).

3. The integrated structure of power battery and frame for new energy commercial vehicles according to claim 1 is characterized in that: The bottom plate (2) is provided with a limiting block (21), and a plurality of battery cells (4) are respectively bonded to the upper end of the bottom plate (2) by means of a heat-conducting structural adhesive and are limited by the limiting block (21).

4. The integrated structure of power battery and frame for new energy commercial vehicles according to claim 2 is characterized in that: The front plate (1) is provided with high and low voltage connectors and a cooling joint, the high and low voltage connectors are respectively connected to the battery pack, and the cooling joint is connected to cooling water channels provided on the bottom plate (2) and the top plate (6).

5. The integrated structure of power battery and frame for new energy commercial vehicles according to claim 2 is characterized in that: The connecting plate (7) is a "J"-shaped buffer structure, and the two ends of the connecting plate (7) are respectively connected to adjacent battery cells.

6. The integrated structure of power battery and frame for new energy commercial vehicles according to claim 5 is characterized in that: A plurality of battery cells (4) are connected in series via a connecting plate (7): two ends of the connecting plate (7) are respectively connected to the positive electrode and the negative electrode of adjacent battery cells (4); A plurality of battery cells (4) are connected in parallel via a connecting plate (7): the two ends of the connecting plate (7) are respectively connected to the positive pole or the negative pole of the adjacent battery cells (4).

7. The integrated structure of power battery and frame for new energy commercial vehicles according to claim 6 is characterized in that: The connecting plate (7) is made of aluminum, copper or an aluminum-copper composite material.

8. The integrated structure of power battery and frame for new energy commercial vehicles according to claim 2 is characterized in that: The front plate (1), the rear plate (5), the bottom plate (2) and the top plate (6) are all made of aluminum alloy.

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