Battery pack structure of electric vehicle

Abstract

The utility model provides a battery pack structure of an electric vehicle. The battery pack structure has good heat dissipation performance and enables passengers of the electric vehicle to have enough riding space. The battery pack structure includes: a case; a cover body joined to the case to constitute an upper surface of the battery pack structure and having an air inlet, the cover body being inclined in a front-rear direction of the electric vehicle; the battery is arranged in the shell and located on the side portion, in the width direction of the electric vehicle, of the battery pack structure. The cooling fan is arranged in the shell and is positioned on the other side part of the battery pack structure in the width direction; the air inlet is communicated with the cooling fan through the air inlet pipe, and the air inlet pipe is inclined in the front-back direction along the cover body; and the power distribution component is arranged below the air inlet pipe.

Description

Technical Field

[0001] The utility model relates to a battery pack structure, in particular to a battery pack structure of an electric vehicle. Background Art

[0002] In recent years, in order to ensure that more people have access to affordable, reliable, sustainable and advanced energy, research and development related to secondary batteries that contribute to energy efficiency has been carried out. However, in the development related to secondary batteries for vehicles, the cooling airflow provided by the cooling fan cannot effectively dissipate heat from all the heat-generating components (batteries, power distribution components, control components, etc.) in the secondary battery. Therefore, it is necessary to improve the battery pack structure to overcome the above problems. Utility Model Content

[0003] The utility model provides a battery pack structure of an electric vehicle, which has good heat dissipation performance and enables passengers of the electric vehicle to have sufficient riding space.

[0004] The utility model provides a battery pack structure of an electric vehicle, comprising: a shell; a cover body, which is joined to the shell to form the upper surface of the battery pack structure and has an air inlet, and the cover body is inclined in the front-rear direction of the electric vehicle; a battery, which is arranged in the shell and is located on the side of the battery pack structure in the width direction of the electric vehicle; a cooling fan, which is arranged in the shell and is located on the other side of the battery pack structure in the width direction; an air inlet duct, which connects the air inlet with the cooling fan, and the air inlet duct is inclined along the cover body in the front-rear direction; and a power distribution component, which is arranged below the air inlet duct.

[0005] In an embodiment of the present invention, the cover is inclined in a manner of increasing height from the rear of the electric vehicle toward the front of the electric vehicle.

[0006] In an embodiment of the present invention, the battery includes a plurality of battery stacks, each of the plurality of battery stacks includes a plurality of battery cells stacked on each other, the plurality of battery stacks are arranged adjacent to each other in the front-to-rear direction, and the cooling fan provides cooling airflow between the plurality of battery stacks.

[0007] In an embodiment of the present invention, the battery pack structure further includes a control component, which is used to control the battery and is disposed above the battery.

[0008] In an embodiment of the present utility model, the battery pack structure further includes a crossbeam, which extends along the width direction and has an exhaust hole, and the cooling airflow provided by the cooling fan is discharged through the exhaust hole.

[0009] Based on the above, in the battery pack structure of the utility model, the cover body and the air intake pipe are inclined in the front-rear direction of the electric vehicle, so that the cooling airflow provided by the cooling fan can be easily guided to the power distribution components with a large space below the air intake pipe. Accordingly, the cooling airflow provided by the cooling fan can not only dissipate heat for the battery, but also effectively dissipate heat for the power distribution components. In addition, by tilting the cover body, a larger space can be formed above the cover body. Therefore, the battery pack structure of the utility model has good heat dissipation performance and provides sufficient riding space for the occupants of the electric vehicle.

[0010] In order to make the above features and advantages of the present invention more obvious and easy to understand, embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a partial structural perspective view of an electric vehicle according to an embodiment of the utility model;

[0012] Figure 2 yes Figure 1 A schematic top view of a local structure of an electric vehicle;

[0013] Figure 3 yes Figure 1 A partial cross-sectional schematic diagram of an electric vehicle;

[0014] Figure 4 yes Figure 1 A partial cross-sectional schematic diagram of an electric vehicle;

[0015] Figure 5 yes Figure 1 A three-dimensional diagram of the partial structure of a battery pack.

[0016] Description of reference numerals:

[0017] 50: Electric vehicles;

[0018] 52: Floor;

[0019] 100: battery pack structure;

[0020] 110: beam;

[0021] 110a: communication hole;

[0022] 110b: exhaust hole;

[0023] 120: battery pack;

[0024] 120a: air inlet;

[0025] 121: power distribution components;

[0026] 122: cooling fan;

[0027] 123: control components;

[0028] 124: Battery;

[0029] 1241: Battery stack;

[0030] 1241a: battery cell;

[0031] 126: housing;

[0032] 128: cover;

[0033] 129: air intake pipe;

[0034] F: cooling airflow;

[0035] X, Y, Z: axial directions. DETAILED DESCRIPTION

[0036] Figure 1 This is a partial structural stereogram of an electric vehicle according to an embodiment of the present invention, showing the axial directions X, Y, and Z. Please refer to Figure 1 The battery pack structure 100 of this embodiment includes a crossbeam 110 and a battery pack 120. The crossbeam 110 extends along the width direction of the electric vehicle 50 (i.e., a direction parallel to the axial direction Y). The battery pack 120 is located above the floor 52 of the electric vehicle 50 and behind the crossbeam 110. In this embodiment, the driving battery pack 120 and the crossbeam 110 are, for example, located below the front seat of the electric vehicle 50.

[0037] Figure 2 yes Figure 1 Schematic diagram of a top view of the local structure of an electric vehicle. Figure 3 yes Figure 1 A partial cross-sectional schematic diagram of an electric vehicle, corresponding to Figure 1 II line. Please refer to Figures 1 to 3 , the crossbeam 110 of this embodiment has a connecting hole 110a opening to the rear of the electric vehicle 50 and an exhaust hole 110b opening to the front of the electric vehicle 50. The crossbeam 110 may also have an exhaust hole opening to the side of the electric vehicle 50, and the utility model is not limited to this. On the other hand, the battery pack 120 has a cooling fan 122, a battery 124, a shell 126 and a cover 128. The battery 124 and the cooling fan 122 are arranged in the shell 126, the battery 124 is located on the side of the battery pack structure 100 in the width direction of the electric vehicle 50 (i.e., the direction parallel to the axial direction Y), and the cooling fan 122 is located on the other side of the battery pack structure 100 in the width direction of the electric vehicle 50 (i.e., the direction parallel to the axial direction Y). The cover 128 is joined to the shell 126 to form the upper surface of the battery pack structure 100 and has an air inlet 120a. In addition, the battery pack 120 is connected to the connecting hole 110a of the crossbeam 110.

[0038] Figure 4 yes Figure 1 A partial cross-sectional schematic diagram of an electric vehicle, corresponding to Figure 1 The II-II line. Figure 5 yes Figure 1 A three-dimensional diagram of the partial structure of the battery pack. Please refer to Figure 4 and Figure 5 The cover 128 is inclined in the front-to-rear direction of the electric vehicle 50 (i.e., the direction parallel to the axial direction X) in a manner that the height increases from the rear of the electric vehicle 50 to the front of the electric vehicle 50. The battery pack 120 also has a power distribution component 121 and an air intake duct 129. The air intake duct 129 connects the air inlet 120a with the cooling fan 122, and the air intake duct 129 is inclined along the cover 128 in the front-to-rear direction of the electric vehicle 50 (i.e., the direction parallel to the axial direction X). The power distribution component 121 is disposed below the air intake duct 129 and close to the front side of the battery pack 120 and in front of the cooling fan 122. Driven by the cooling fan 122, the cooling air flow F enters the battery pack 120 through the air inlet 120a, the air inlet pipe 129 and the cooling fan 122 to cool the battery 124 and the distribution component 121. Then the cooling air flow F enters the beam 110 through the opening 120b and the connecting hole 110a and is discharged through the exhaust hole 110b of the beam 110.

[0039] As described above, in the battery pack structure 100 of the present invention, the cover 128 and the air intake duct 129 are inclined in the front-to-rear direction of the electric vehicle 50 (i.e., the direction parallel to the axial direction X), so that the cooling airflow F provided by the cooling fan 122 can be easily guided to the power distribution component 121 with a larger space below the air intake duct 129. Accordingly, the cooling airflow F provided by the cooling fan 122 can not only be used to dissipate heat for the battery 124, but also effectively dissipate heat for the power distribution component 121. In addition, by tilting the cover 128, a larger space can be formed above the cover 128. Thus, the battery pack structure 100 of this embodiment has good heat dissipation performance and provides sufficient riding space for the occupants of the electric vehicle 50.

[0040] Please refer to Figure 2 , Figure 3 and Figure 5 In this embodiment, the battery 124 includes a plurality of battery stacks 1241 (shown as two battery stacks 1241) arranged adjacent to each other in the front-to-rear direction of the electric vehicle 50 (i.e., in the direction parallel to the axial direction X), and each battery stack 1241 includes a plurality of battery cells 1241a stacked on each other. The cooling fan 122 provides a cooling airflow F between the plurality of battery stacks 1241 to dissipate heat from each battery cell 1241a of the battery stack 1241.

[0041] Please refer to Figure 2 In this embodiment, the battery pack structure 100 further includes a control component 123 for controlling the battery 124, and the control component 123 is disposed above the battery 124 and close to the front side of the battery pack 120. As described above, the cover 128 is tilted in the front-to-rear direction of the electric vehicle 50 (i.e., the direction parallel to the axial direction X), so that the cooling airflow F provided by the cooling fan 122 can be easily guided to the control component 123 with a larger space below the cover 128. Accordingly, the cooling airflow F provided by the cooling fan 122 can not only dissipate heat for the battery 124 and the power distribution component 121, but also effectively dissipate heat for the control component 123.

[0042] In summary, in the battery pack structure of the present invention, the cover body and the air intake duct are inclined in the front-rear direction of the electric vehicle, so that the cooling airflow provided by the cooling fan can be easily guided to the power distribution components with a large space below the air intake duct and the control components with a large space below the cover body. Accordingly, the cooling airflow provided by the cooling fan can not only be used to dissipate heat for the battery, but also effectively dissipate heat for the power distribution components and the control components. In addition, by tilting the cover body, a larger space can be formed above the cover body. Therefore, the battery pack structure of the present invention has good heat dissipation performance and provides sufficient riding space for the occupants of the electric vehicle.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solution recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solution to deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A battery pack structure for an electric vehicle, characterized in that: include: case; a cover body, which is joined to the housing to form an upper surface of the battery pack structure and has an air inlet, and the cover body is inclined in the front-rear direction of the electric vehicle; a battery disposed in the housing and located on a side of the battery pack structure in a width direction of the electric vehicle; a cooling fan disposed in the housing and located at another side of the battery pack structure in the width direction; an air intake duct, connecting the air intake port with the cooling fan, the air intake duct being inclined along the cover in the front-rear direction; and The power distribution component is arranged below the air intake pipe.

2. The battery pack structure according to claim 1, characterized in that: The cover is inclined in such a manner that the height increases from the rear of the electric vehicle toward the front of the electric vehicle.

3. The battery pack structure according to claim 1, characterized in that: The battery includes a plurality of battery stacks, each of the plurality of battery stacks includes a plurality of battery cells stacked on each other, and the plurality of battery stacks are arranged adjacent to each other in the front-rear direction, The cooling fan provides cooling airflow between the plurality of battery stacks.

4. The battery pack structure according to claim 1, characterized in that: The device also includes a control component, which is used to control the battery and is arranged above the battery.

5. The battery pack structure according to claim 1, characterized in that: It also includes a crossbeam extending along the width direction and having an exhaust hole, The cooling airflow provided by the cooling fan is discharged through the exhaust hole.

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