Battery pack structure with double-sided liquid-cooling external water-cooling pipeline

Abstract

The utility model discloses a double-sided liquid-cooling external water-cooling pipeline battery pack structure, which comprises a box body and a plurality of battery modules arranged on the box body, a side cold plate is arranged on one side surface of each battery module, a side cold plate adapter is arranged at the rear tail end of each battery module, the side cold plate comprises a side cold plate main body, and the side cold plate main body is connected with the side cold plate adapter. Limiting blocks are tightly attached to the side faces, facing the side cold plate adapters, of the rear tail ends of the side cold plate bodies, two spaced box adapters are welded to the rear wall of the box, and through holes penetrating through the rear wall and allowing the side cold plate adapters to be installed therein are formed in the positions, located on the two sides of the box adapters, of the rear wall of the box. A waterway plate is installed on the outer side face of the rear wall of the box body, a side cold plate water cooling connector is welded to the position, opposite to the side cold plate adapter, of the waterway plate, and a box body water cooling connector is welded to the position, opposite to the box body adapter, of the waterway plate. The problem of short circuit of the battery pack caused by leakage of cooling liquid can be avoided.

Description

Technical field:

[0001] The utility model relates to a double-sided liquid-cooled and external water-cooled pipeline battery pack structure, which belongs to the technical field of new energy power battery packs. Background technology:

[0002] With the continuous development of new energy vehicles in my country, the shortcomings of new energy vehicles have gradually been exposed. The temperature of the battery cell limits the battery charging speed and service life, and constantly impacts everyone's confidence in new energy vehicles. Especially in the mining industry, the working environment and working hours have very strict requirements on the structural strength and thermal management of the battery pack. Vehicles working in the mine must have strong climbing ability, which means that the battery pack works in a long-term high-current discharge environment, which requires the battery pack to have strong heat dissipation capabilities and sufficient strength, especially water cooling pipelines. Most of the existing pipeline designs in the industry use quick-connect plugs, which will have the risk of coolant leakage.

[0003] Therefore, it is necessary to improve the existing technology to solve the shortcomings of the existing technology. Utility model content:

[0004] The utility model provides a double-sided liquid-cooled and external water-cooled pipeline battery pack structure in order to solve the problems existing in the above-mentioned prior art, which can avoid the problem of short circuit of the battery pack caused by cooling liquid leakage.

[0005] The technical scheme adopted by the utility model includes: a double-sided liquid-cooled external water-cooling pipeline battery pack structure, including a box body and a plurality of battery modules installed on the box body and arranged in parallel, a side cold plate is installed on one of the side surfaces of each battery module, and a side cold plate adapter is placed at the rear end of each battery module. The side cold plate includes a side cold plate main body, the rear end of the side cold plate main body is tightly attached to a limited block on the side of the side cold plate adapter facing the side, a first aluminum pipeline is welded between the side cold plate main body and the side cold plate adapter, two spaced-apart box adapters are welded on the rear wall of the box body, through holes that penetrate the rear wall and are installed in the supply-side cold plate adapters are formed at positions on both sides of the box adapter on the rear wall of the box body, a waterway plate is installed on the outer side surface of the rear wall of the box body, a side cold plate water-cooling joint is welded on the waterway plate at a position opposite to the supply-side cold plate adapter, and a box water-cooling joint is welded on the waterway plate at a position opposite to the box adapter.

[0006] Furthermore, the box body includes a bottom liquid cooling plate, a left beam welded to the left side of the bottom liquid cooling plate, a right beam welded to the right side of the bottom liquid cooling plate, a front panel welded to the front side of the bottom liquid cooling plate, and a rear panel welded to the rear side of the bottom liquid cooling plate.

[0007] Furthermore, the box adapter is welded on the rear panel.

[0008] Furthermore, a second aluminum pipeline is welded between the box adapter and the bottom liquid cooling plate.

[0009] Furthermore, a sealing ring is installed in the groove of the supply-side cold plate adapter.

[0010] Furthermore, grooves are formed on the side cold plate water cooling joint and the box body water cooling joint.

[0011] Furthermore, O-rings are installed in the grooves of the side cold plate water-cooling joint and the box body water-cooling joint.

[0012] Furthermore, the side cold plate body and the limit block are bonded together using a heat-conducting structural adhesive.

[0013] Furthermore, the battery module adopts a double steel belt module.

[0014] The utility model has the following beneficial effects:

[0015] (1) In the double-sided liquid-cooled and external water-cooled battery pack structure of the utility model, the liquid-cooling pipelines inside the battery pack are all welded, and there are no pipeline joints inside, so as to avoid failure of pipeline transfer installation due to vibration.

[0016] (2) The utility model has a double-sided liquid-cooled and external water-cooled pipe battery pack structure, in which the water-cooled adapter parts are all moved outside the box. Even if they fail, they will not affect the safety of the battery pack, thus avoiding the leakage of coolant that causes a short circuit in the battery pack, which can lead to serious safety accidents.

[0017] (3) The double-sided liquid-cooled and external water-cooled pipeline battery pack structure of the utility model is easy to install and does not require unpacking for inspection and maintenance, which greatly improves the efficiency of subsequent maintenance and reduces man-hours.

[0018] (4) In the double-sided liquid-cooled and external water-cooled pipeline battery pack structure of the utility model, the left and right beams of the box body are thickened, leaving a cavity in the middle, thereby reducing the weight of the box body and increasing the overall structural strength of the battery pack.

[0019] (5) Compared with the conventional bottom liquid cooling solution, the double-sided liquid cooling and external water cooling pipeline battery pack structure of the utility model adds side liquid cooling, which greatly improves the thermal management efficiency, effectively reduces the charging time and prolongs the battery life. Description of the drawings:

[0020] Figure 1 This is a schematic diagram of the structure of the double-sided liquid-cooled and external water-cooled pipeline battery pack of the utility model.

[0021] Figure 2 Schematic diagram of the side cooling plate.

[0022] Figure 3 This is a schematic diagram of the box.

[0023] Figure 4 for Figure 3 A partial enlarged schematic diagram of .

[0024] Figure 5 This is a schematic diagram of the waterway plate.

[0025] Figure 6 It is a partial cross-sectional view of the double-sided liquid-cooled and external water-cooled pipeline battery pack structure of the utility model. Specific implementation method:

[0026] The utility model is further described below in conjunction with the accompanying drawings.

[0027] The double-sided liquid-cooled external water-cooled pipeline battery pack structure of the utility model comprises a box body 4 and a plurality of battery modules 1 mounted on the box body 4 and arranged in parallel, a side cold plate 2 is mounted on one of the side surfaces of each battery module 1, and a side cold plate adapter 8 is placed at the rear end of each battery module 1. The side cold plate 2 comprises a side cold plate body 6, the rear end of the side cold plate body 6 is in close contact with a limiting block 9 on the side of the side cold plate adapter 8, the side cold plate body 6 and the limiting block 9 are bonded with a heat-conducting structural adhesive, and a first aluminum pipeline 7 is welded between the side cold plate body 6 and the side cold plate adapter 8.

[0028] The box body 4 includes a bottom liquid cooling plate 11, a left beam 14 welded to the left side of the bottom liquid cooling plate 11, a right beam 10 welded to the right side of the bottom liquid cooling plate 11, a front panel 12 welded to the front side of the bottom liquid cooling plate 11, and a rear panel 13 welded to the rear side of the bottom liquid cooling plate 11, two spaced-apart box body adapters 15 are welded to the rear panel 13, and a second aluminum pipe 16 is welded between the box body adapter 15 and the bottom liquid cooling plate 11.

[0029] Through holes (not shown) are formed on the rear panel 13 at the positions on both sides of the box adapter 15, and the supply side cold plate adapter 8 is installed therein, and a sealing ring 20 is installed in the groove of the supply side cold plate adapter 8. A waterway plate 5 is installed on the outer surface of the rear panel 13, and a side cold plate water cooling joint 17 is welded on the waterway plate 5 at a position opposite to the supply side cold plate adapter 8, and a box water cooling joint 18 is welded on the waterway plate 5 at a position opposite to the box adapter 15. Grooves (not shown) are formed on both the side cold plate water cooling joint 17 and the box water cooling joint 18.

[0030] In the double-sided liquid-cooled and external water-cooled pipeline battery pack structure of the utility model, the battery module 1 adopts a double steel belt module to ensure that the battery can be effectively restrained after expansion due to charge and discharge.

[0031] The utility model discloses a double-sided liquid-cooled external water-cooled pipeline battery pack structure. During installation, the battery module 1 and the side cold plate 2 are pre-assembled, the side cold plate adapter 8 is placed at the rear end of the battery module 1, the limit block 9 is close to the side cold plate body 6, the side cold plate body 6 and the limit block 9 are bonded with a heat-conducting structural adhesive, and then a sealing ring 20 is installed in the groove of the side cold plate adapter 8, the battery module 1 is installed in the box body 4, the grooves of the side cold plate water-cooling joint 17 of the water plate 5 and the box body water-cooling joint 18 are pre-coated with lubricating oil, and then the O-ring 3 is installed in the grooves of the side cold plate water-cooling joint 17 and the box body water-cooling joint 18, and then the side cold plate water-cooling joint 17 is aligned with the side cold plate adapter 8, and the box body water-cooling joint 18 is aligned with the box body adapter 15, and after installation is in place, it can be locked with bolts 19.

[0032] The utility model has a double-sided liquid-cooled and external water-cooled pipe battery pack structure. The liquid-cooled pipes are all welded inside the battery pack, and there are no pipe joints inside, which avoids the failure of the pipe transfer installation due to vibration. The water-cooled transfer part is completely moved outside the box, and will not affect the safety of the battery pack after failure, avoiding the leakage of coolant causing a short circuit in the battery pack, which may lead to serious safety accidents.

[0033] The above is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements without departing from the principle of the present invention, and these improvements should also be regarded as within the protection scope of the present invention.

Claims

1. A double-sided liquid-cooled and external water-cooled pipeline battery pack structure, characterized in that: The invention comprises a box body (4) and a plurality of battery modules (1) mounted on the box body (4) and arranged in parallel, a side cold plate (2) being mounted on one side of each battery module (1), a side cold plate adapter (8) being placed at the rear end of each battery module (1), the side cold plate (2) comprising a side cold plate body (6), the rear end of the side cold plate body (6) being in close contact with a limiting block (9) on the side facing the side cold plate adapter (8), a first aluminum pipeline (7) being welded between the side cold plate body (6) and the side cold plate adapter (8), Two spaced-apart box adapters (15) are welded on the rear wall of the box (4); through holes penetrating the rear wall and in which the supply side cold plate adapter (8) is installed are formed at positions on both sides of the box adapter (15); a waterway plate (5) is installed on the outer side surface of the rear wall of the box (4); a side cold plate water cooling joint (17) is welded on the waterway plate (5) at a position opposite to the supply side cold plate adapter (8); and a box water cooling joint (18) is welded on the waterway plate (5) at a position opposite to the box adapter (15).

2. The double-sided liquid-cooled and external water-cooled pipeline battery pack structure according to claim 1, characterized in that: The box body (4) comprises a bottom liquid cooling plate (11), a left side beam (14) welded to the left side of the bottom liquid cooling plate (11), a right side beam (10) welded to the right side of the bottom liquid cooling plate (11), a front panel (12) welded to the front side of the bottom liquid cooling plate (11), and a rear panel (13) welded to the rear side of the bottom liquid cooling plate (11).

3. The double-sided liquid-cooled and external water-cooled pipeline battery pack structure according to claim 2, characterized in that: The box adapter (15) is welded on the rear panel (13).

4. The double-sided liquid-cooled and external water-cooled pipeline battery pack structure according to claim 3, characterized in that: A second aluminum pipeline (16) is welded between the box adapter (15) and the bottom liquid cooling plate (11).

5. The double-sided liquid-cooled and external water-cooled pipeline battery pack structure according to claim 4, characterized in that: A sealing ring is installed in the groove of the supply side cold plate adapter (8).

6. The double-sided liquid-cooled and external water-cooled pipeline battery pack structure according to claim 5, characterized in that: Grooves are formed on the side cooling plate water cooling joint (17) and the box body water cooling joint (18).

7. The double-sided liquid-cooled and external water-cooled pipeline battery pack structure according to claim 6, characterized in that: O-rings (3) are installed in the grooves of the side cooling plate water cooling joint (17) and the box body water cooling joint (18).

8. The double-sided liquid-cooled and external water-cooled pipeline battery pack structure according to claim 7, characterized in that: The side cold plate body (6) and the limit block (9) are bonded together using a heat-conducting structural adhesive.

9. The double-sided liquid-cooled and external water-cooled pipeline battery pack structure according to claim 8, characterized in that: The battery module (1) adopts a double steel belt module.

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