Air duct plate for battery pack, battery pack and vehicle

Abstract

The utility model discloses an air duct plate for a battery pack, the battery pack and a vehicle, the battery pack comprises a plurality of battery monomers arranged along a first direction, and the air duct plate comprises a plate main body which is provided with an air guide channel extending along the first direction; the partition plates are arranged on the plate main body so as to divide the air guide channel into a plurality of air duct areas which are communicated in the first direction, the air duct areas correspond to at least one battery monomer, the partition plates abut against and are matched with the battery monomers, and the partition plates are at least arranged opposite to gaps between two adjacent battery monomers in the second direction. According to the air duct plate disclosed by the embodiment of the utility model, the partition plates are propped against and matched with the battery monomers, so that the partition plates are used for sealing a gap between the two adjacent battery monomers, air entering the gap between the two adjacent battery monomers is reduced, and turbulent flow generated in the flowing process of the air is reduced; and therefore, the heat dissipation efficiency and the heat dissipation effect of the battery monomers are improved.

Description

Technical Field

[0001] This utility model relates to the field of battery pack technology, and more specifically, to a duct plate for a battery pack, a battery pack, and a vehicle. Background Technology

[0002] In related technologies, the individual battery cells in the battery pack generate heat during charging and discharging. Excessive heat in the individual battery cells can affect their charging and discharging efficiency. Therefore, it is necessary to assist in heat dissipation of the individual battery cells in the battery pack. Thus, a duct plate is installed inside the battery pack to dissipate heat from the individual battery cells.

[0003] In existing technologies, there are too many air ducts on the air duct plate, the air direction is not fixed, and turbulence is easily generated, which affects the heat dissipation effect on the battery cells. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a duct plate for a battery pack, which allows a separator plate to abut against the battery cells, thereby sealing the gap between two adjacent battery cells, reducing the amount of air entering the gap between the two adjacent battery cells, reducing turbulence, increasing the airflow and velocity in the air duct, and improving the heat dissipation efficiency and effect on the battery cells.

[0005] This utility model also proposes a battery pack having the aforementioned air duct plate.

[0006] This utility model also proposes a vehicle having the aforementioned battery pack.

[0007] According to a first aspect embodiment of the present invention, a duct plate for a battery pack is provided, the battery pack including a plurality of battery cells arranged along a first direction, the duct plate including: a plate body, the plate body having an air guiding channel extending along the first direction; a partition plate, the partition plate being disposed on the plate body to divide the air guiding channel into a plurality of air duct regions communicating in the first direction, each air duct region corresponding to at least one battery cell, the partition plate abutting against the battery cell, and the gap between the partition plate and at least two adjacent battery cells being disposed opposite to each other in a second direction, the second direction and the first direction having an included angle.

[0008] According to the embodiment of the present invention, the air duct plate for the battery pack is designed to abut against the battery cells, thereby sealing the gap between two adjacent battery cells, reducing the amount of air entering the gap between the two adjacent battery cells, reducing turbulence, increasing the airflow and velocity in the air duct, and improving the heat dissipation efficiency and effect of the battery cells.

[0009] In addition, the air duct plate for the battery pack according to the above embodiments of the present invention may also have the following additional technical features:

[0010] According to some embodiments of the present invention, at least one surface of the separator plate abuts against the battery cell.

[0011] According to some embodiments of the present invention, in the second direction, the first surface of the partition plate is flush with the plate body, and the first surface abuts against the battery cell; or, the first surface of the partition plate protrudes from the plate body, and the first surface abuts against the battery cell; the second surface of the partition plate is located in the air guide channel, and is spaced apart from the outer periphery of the plate body to define a guide channel, and adjacent air duct areas are connected through the guide channel.

[0012] According to some optional embodiments of the present invention, the first surface is flush with the main body of the plate.

[0013] According to some optional embodiments of the present invention, in the third direction, the plate body is provided with a plurality of air guiding channels, and each air guiding channel is independently provided with a partition plate, and the third direction, the first direction and the second direction are perpendicular to each other.

[0014] According to some specific embodiments of the present invention, in the third direction, the first surfaces of adjacent partition plates are located on different sides of the plate body in the second direction.

[0015] According to some optional embodiments of the present invention, the air duct plate further includes a first reinforcing member, which is connected to the partition plate and the plate body respectively.

[0016] According to some specific embodiments of the present invention, in the first direction, both ends of the partition plate are provided with the first reinforcing member.

[0017] According to some embodiments of the present invention, the plate body includes: a plurality of horizontal plates extending along the first direction, the plurality of horizontal plates being arranged at intervals along a third direction, the third direction, the first direction and the second direction being perpendicular to each other, each of two adjacent horizontal plates independently defining the air guiding channel, and the partition plate independently connecting the adjacent horizontal plates in the third direction.

[0018] According to some optional embodiments of the present invention, the plate body further includes: a second reinforcing member, wherein each of the air duct areas is provided with the second reinforcing member, the second reinforcing member connects two adjacent horizontal plates along the third direction to separate and form a vent in the air duct area, and the length direction of the second reinforcing member extends along the first direction.

[0019] According to some specific embodiments of the present invention, each of the air duct areas is provided with a plurality of second reinforcing members arranged at intervals along the first direction, so as to divide the air duct area into a plurality of ventilation openings arranged at intervals along the first direction.

[0020] According to some optional embodiments of the present invention, the cross plate is provided with weight reduction holes.

[0021] According to some specific embodiments of this utility model, the weight reduction hole penetrates the horizontal plate along the second direction.

[0022] According to some embodiments of the present invention, the air duct plate further includes a limiting rib, which is disposed on the plate body and extends beyond the plate body in the second direction. The limiting rib is adapted to abut against the side wall of the battery cell in the first direction.

[0023] According to some optional embodiments of the present invention, the air duct plate includes a plurality of limiting ribs, and the plurality of limiting ribs are arranged at intervals along the first direction.

[0024] According to some optional embodiments of the present invention, in the third direction, the limiting ribs are disposed at both ends of the plate body, and the third direction, the first direction and the second direction are perpendicular to each other.

[0025] According to a second aspect of the present invention, a battery pack is provided, the battery pack comprising: a housing defining a receiving cavity, an air inlet communicating with the receiving cavity, and an air outlet; a plurality of battery cells disposed within the receiving cavity, at least some of the battery cells being arranged in a first direction to form a single row of battery cell groups; and a duct plate for the battery pack according to a first aspect of the present invention, wherein, in a second direction, the battery cell groups and the duct plate are spaced apart.

[0026] According to the embodiments of the present invention, the battery pack utilizes the air duct plate for the battery pack as described in the first aspect of the present invention, so that the partition plate abuts against the battery cell, thereby sealing the gap between two adjacent battery cells, reducing the amount of air entering the gap between two adjacent battery cells, reducing the turbulence generated, increasing the airflow and velocity in the air duct, and improving the heat dissipation efficiency and effect of the battery cells.

[0027] According to some embodiments of the present invention, the separator plate abuts against and contacts the corresponding adjacent battery cells.

[0028] According to some embodiments of the present invention, the battery cell group is arranged in multiple rows along the second direction, and in the second direction, the air duct plate and the battery cell group are arranged alternately.

[0029] According to some embodiments of this utility model, the air inlet and the air outlet are respectively positioned directly opposite the two ends of the air guiding channel.

[0030] According to some optional embodiments of the present invention, the air inlet includes a plurality of air inlet holes, the projection of the air inlet holes in the first direction being a regular hexagon; and / or, the air outlet includes a plurality of air outlet holes, the projection of the air outlet holes in the first direction being a regular hexagon.

[0031] A vehicle is provided according to a third aspect of the present invention, the vehicle including a battery pack according to a second aspect of the present invention.

[0032] According to the vehicle of the present invention, by utilizing the battery pack described in the second aspect of the present invention, the separator plate abuts against the battery cell to close the gap between two adjacent battery cells, thereby reducing the amount of air entering the gap between the two adjacent battery cells, reducing the turbulence generated, increasing the airflow and velocity in the air guide channel, and improving the heat dissipation efficiency and effect of the battery cells.

[0033] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0034] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0035] Figure 1 This is a structural schematic diagram of a duct plate for a battery pack according to an embodiment of the present utility model;

[0036] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0037] Figure 3 This is a front view of a duct plate for a battery pack according to an embodiment of the present invention;

[0038] Figure 4 This is a top view of a duct plate for a battery pack according to an embodiment of the present invention;

[0039] Figure 5 This is a side view of a duct plate for a battery pack according to an embodiment of the present invention;

[0040] Figure 6 This is a cross-sectional view of a duct plate for a battery pack according to an embodiment of the present invention;

[0041] Figure 7 This is a partial structural schematic diagram of a battery pack according to an embodiment of the present utility model;

[0042] Figure 8 yes Figure 7 Enlarged view of point B in the middle;

[0043] Figure 9 yes Figure 7 A magnified view of point C in the middle.

[0044] Attached label: 1000, battery pack;

[0045] 100. Air duct panel;

[0046] 10. Main body of the plate; 11. Air duct; 111. Air duct area; 112. Through-channel; 113. Ventilation opening; 15. Horizontal plate; 151. Weight reduction hole; 16. Second reinforcing member;

[0047] 20. Separator; 21. First surface; 22. Second surface;

[0048] 31. First reinforcing component;

[0049] 50. Limiting reinforcement;

[0050] 600, battery cell; 610, battery cell pack;

[0051] 700. Housing; 71. Receiving cavity; 72. Air inlet; 721. Air inlet hole; 73. Air outlet. Detailed Implementation

[0052] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0053] The following description, with reference to the accompanying drawings, describes an air duct plate for a battery pack according to an embodiment of the present invention.

[0054] like Figures 1-9 As shown, the battery pack 1000 includes a plurality of battery cells 600 arranged along a first direction, and the air duct plate 100 according to an embodiment of the present invention includes a plate body 10 and a partition plate 20.

[0055] The main body 10 is provided with an air guide channel 11 extending in a first direction. A partition plate 20 is provided on the main body 10 to divide the air guide channel 11 into a plurality of air duct regions 111 connected in the first direction. Each air duct region 111 corresponds to at least one battery cell 600. When air flows through the air duct region 111 along the air guide channel 11, the air can carry away the heat on the battery cell 600 in the corresponding air duct region 111 to dissipate heat from the battery cell 600.

[0056] The separator 20 abuts against the battery cell 600. The separator 20 is positioned directly opposite the gap between at least two adjacent battery cells 600 in the second direction. There is an angle between the first direction and the second direction. The separator 20 is used to seal the gap between two adjacent battery cells 600, thereby reducing the amount of air entering the gap between adjacent battery cells 600 and reducing the possibility of turbulence in the air at the junction of two adjacent air duct regions 111 and in the gap between two adjacent battery cells 600.

[0057] Specifically, since the air guide channel 11 is connected to the space inside the battery pack 1000, air in the air guide channel 11 can easily flow into the battery pack 1000. That is to say, the air in the air guide channel 11 may flow along the air guide channel 11, or it may flow into the battery pack 1000 and into the gap between two adjacent battery cells 600. This causes the air flow direction to be unfixed, which can easily lead to turbulence. This utility model provides a partition plate 20 to close the gap between two adjacent battery cells 600. In this way, for the part of the air guide channel 11 opposite to the partition plate 20, the air can only flow along the air guide channel 11, and the air flow direction is fixed, thereby reducing the generation of turbulence.

[0058] In the embodiment where the air duct plate 100 is located within the battery pack 1000, since the battery cell 600 generates gas during charging and discharging, and the battery cell 600 expands during charging and discharging, a gap needs to be reserved between two adjacent battery cells 600 to allow space for the expansion of the battery cell 600. When air flows along the air guide channel 11, some air flows along the air guide channel 11, and some air enters the gap between two adjacent battery cells 600, causing the air in the air guide channel 11 to have two flow directions, which easily generates turbulence. At the same time, the air entering the gap between two adjacent battery cells 600 is also prone to turbulence because it has no outlet, affecting the air velocity in the air guide channel 11 and affecting the heat dissipation efficiency of the battery cell 600.

[0059] For example, two adjacent airflow regions 111 are referred to as the first airflow region and the second airflow region. In the direction of airflow, the first airflow region is upstream of the second airflow region. The partition plate 20 is located between the first airflow region and the second airflow region. The battery pack 1000 includes a first battery cell and a second battery cell that are adjacent in a first direction. A portion of the first battery cell is located in the first airflow region, and a portion of the first battery cell near the second battery cell abuts against the partition plate 20. A portion of the second battery cell is located in the second airflow region, and a portion of the second battery cell near the first battery cell abuts against the partition plate 20. The partition plate 20 seals the gap between the first battery cell and the second battery cell, thereby reducing the amount of air entering the gap between the first battery cell and the second battery cell, reducing turbulence, and improving the heat dissipation effect on the battery cell 600.

[0060] Therefore, according to the embodiment of the present invention, the air duct plate 100 for the battery pack 1000 makes the partition plate 20 abut against the battery cell 600, so as to use the partition plate 20 to close the gap between two adjacent battery cells 600, reduce the air entering the gap between two adjacent battery cells 600, reduce the generated turbulence, increase the air flow and velocity in the air duct 11, and improve the heat dissipation efficiency and heat dissipation effect of the battery cell 600.

[0061] The following description, with reference to the accompanying drawings, describes a specific embodiment of the air duct plate 100 for a battery pack 1000 according to the present invention.

[0062] In some specific embodiments of this utility model, such as Figures 1-9 As shown, the air duct plate 100 for the battery pack 1000 includes a plate body 10 and a partition plate 20.

[0063] In some embodiments of this utility model, at least one surface of the separator 20 abuts against the battery cell 600 to seal the gap between two adjacent battery cells 600 by utilizing the surface of the separator 20, thereby reducing the amount of air entering the gap between the two adjacent battery cells 600, reducing the turbulence generated, increasing the airflow and velocity in the air guide channel 11, and improving the heat dissipation efficiency and effect of the battery cell 600.

[0064] In some embodiments of this utility model, such as Figure 2 As shown, in the second direction, the first surface 21 of the separator 20 is flush with the plate body 10 and abuts against the battery cell 600; or, the first surface 21 of the separator 20 protrudes from the plate body 10 and abuts against the battery cell 600, so that the first surface 21 of the separator 20 can close the gap between two adjacent battery cells 600.

[0065] The second surface 22 of the partition plate 20 is located inside the air duct 11 and is spaced apart from the outer periphery of the plate body 10 to define the connecting channel 112. Adjacent air duct areas 111 are connected through the connecting channel 112 so that the air in the previous air duct area 111 can directly enter the next air duct area 111 through the connecting channel 112, ensuring the circulation of the entire air duct 11, thereby ensuring the air velocity and flow rate in the air duct 11, and improving the heat dissipation efficiency and heat dissipation effect of the battery cell 600.

[0066] In some embodiments, the first surface 21 and the second surface 22 of the separator 20 are disposed opposite to each other along the second direction, and the first surface 21 and the second surface 22 are the surfaces with the largest surface area of ​​the separator 20. The length direction of the first surface 21 and the second surface 22 extends along the first direction, so that the first surface 21 can fully close the gap between two adjacent battery cells 600.

[0067] In some optional embodiments of this utility model, such as Figure 2 As shown, the first surface 21 is flush with the main body 10 of the plate, which can prevent the first surface 21 from scratching the battery cell 600, and at the same time facilitates the control of the volume of the air duct plate 100 and saves materials.

[0068] In some examples, the plate body 10 is a one-piece molded structure, so that the first surface 21 is flush with the plate body 10, which facilitates the one-piece molding of the plate body 10 and facilitates demolding.

[0069] In some optional embodiments of this utility model, such as Figures 1-3 As shown, in the third direction, the plate body 10 is provided with multiple air guide channels 11, and each air guide channel 11 is independently provided with a partition plate 20. The third direction, the first direction and the second direction are perpendicular to each other.

[0070] Among them, the battery cell 600 has a certain size in the third direction, so that the plate body 10 forms multiple air guiding channels 11 in the third direction, so as to use multiple air guiding channels 11 to dissipate heat from the battery cell 600, thereby increasing the heat dissipation area of ​​the air duct plate 100 on the battery cell 600 and improving the heat dissipation efficiency.

[0071] In some specific embodiments of this utility model, such as Figure 5 As shown, in the third direction, the first surface 21 of the adjacent partition plate 20 is located on different sides of the plate body 10 in the second direction. This facilitates the increase of the overall structural strength of the air duct plate 100, and on the other hand, multiple partition plates 20 can be used to control the turbulence on both sides of the air guide channel 11 in the second direction.

[0072] Specifically, in the second direction, a portion of the partition plate 20 is located on the first side of the plate body 10, and is flush with or protrudes from the plane of the first side of the plate body 10. Another portion of the partition plate 20 is located on the second side of the plate body 10, and is flush with or protrudes from the plane of the second side of the plate body 10.

[0073] When the air duct plate 100 is disposed within the battery pack 1000, in the second direction, the first side of the air duct plate 100 has a plurality of battery cells 600 arranged in the first direction, and the second side of the air duct plate 100 has a plurality of battery cells 600 arranged in the first direction.

[0074] The partition plate 20 located on the first side of the plate body 10 abuts against the battery cell 600 located on the first side of the air duct plate 100 to seal the junction of two adjacent air duct areas 111 on the first side in the second direction, thereby reducing the amount of air entering the gap between two adjacent battery cells 600 located on the first side of the air duct plate 100, thereby reducing turbulence, increasing air velocity, and improving the heat dissipation efficiency and effect of the battery cell 600.

[0075] The partition plate 20 located on the second side of the main body 10 abuts against the battery cell 600 located on the second side of the air duct plate 100 to seal the junction of two adjacent air duct areas 111 on the second side in the second direction, thereby reducing the amount of air entering the gap between two adjacent battery cells 600 located on the second side of the air duct plate 100, thereby reducing turbulence, increasing air velocity, and improving the heat dissipation efficiency and effect of the battery cell 600.

[0076] In some embodiments, such as Figure 1 , Figure 2 As shown, the partition plates 20 in the same air guide channel 11 are located on the same side of the plate body 10. This ensures that the air in the air guide channel 11 flows in a straight line, reduces the air flow path in the air guide channel 11, and thus increases the air flow rate and improves the air heat dissipation efficiency.

[0077] It needs to be explained here that, since the first surface 21 of the separator 20 abuts against the corresponding battery cell 600, the junction of two adjacent air duct regions 111 on one side of the second direction is closed, and the air in the upstream air duct region 111 can only enter the downstream air duct region 111 through the conduction channel 112.

[0078] Specifically, for the partition plate 20 located on the first side of the main plate 10, the boundary between two adjacent air duct regions 111 on the second side in the second direction is connected, thus generating a certain amount of turbulence at the boundary between two adjacent air duct regions 111 on the second side in the second direction. For the partition plate 20 located on the second side of the main plate 10, the boundary between two adjacent air duct regions 111 on the second side in the second direction is connected, thus generating a certain amount of turbulence at the boundary between two adjacent air duct regions 111 on the first side in the second direction.

[0079] Although some turbulence will still be generated, by setting multiple partition plates 20, the generation of turbulence can be reduced to a certain extent, thereby improving the heat dissipation efficiency.

[0080] Furthermore, in some other specific embodiments, each air duct 11 is provided with at least two partition plates 20 arranged opposite each other along the second direction. The second surfaces 22 of the two partition plates 20 face each other and are spaced apart to define the conduction channel 112. At the same time, they close the junction of the two sides of the two adjacent air duct regions 111 in the second direction, reducing the amount of air entering the gap between the two adjacent battery cells 600 located on both sides of the air duct plate 100, thereby reducing turbulence, increasing the air velocity, and improving the heat dissipation efficiency and effect of the battery cells 600.

[0081] It should be noted that the two adjacent air duct regions 111 mentioned above refer to two air duct regions 111 that are adjacent in the first direction. Similarly, the two adjacent battery cells 600 mentioned above refer to two battery cells 600 that are adjacent in the first direction.

[0082] In some embodiments, such as Figure 1 , Figure 3 As shown, the air duct plate 100 has a mirror structure to ensure the consistency of the force exerted by the air duct plate 100 on the battery cell 600 and the consistency of the multiple air guiding channels 11. At the same time, the relatively compact structure can ensure the main strength of the air duct plate 100, so that the air duct plate 100 will not be damaged after being subjected to the compressive force of the battery cell 600.

[0083] Meanwhile, the partition plate 20 can increase the contact area between the air duct plate 100 and the battery cell 600, reduce the pressure on the battery cell 600, and reduce the risk of the battery cell 600 being squeezed and cut by the air duct plate 100.

[0084] In some optional embodiments of this utility model, such as Figure 2 As shown, the air duct plate 100 also includes a first reinforcing member 31, which is connected to the partition plate 20 and the plate body 10 respectively. On the one hand, it can increase the stability of the connection between the partition plate 20 and the plate body 10, and on the other hand, it can increase the overall structural strength of the air duct plate 100.

[0085] Specifically, gas is generated during the charging and discharging of the battery cell 600. The battery cell 600 expands during the charging and discharging process, so the air duct plate 100 is subjected to the compressive force of the battery cell 600. By setting the first reinforcing member 31, the overall structural strength of the air duct plate 100 can be increased so that the air duct plate 100 can withstand the compressive force of the battery cell 600.

[0086] In some specific embodiments of this utility model, in the first direction, both ends of the partition plate 20 are provided with first reinforcing members 31 to increase the stability of the connection between the partition plate 20 and the plate body 10 and to increase the compressive force that the partition plate 20 can withstand.

[0087] like Figure 2 As shown, in this embodiment, the first reinforcing member 31 is disposed at the end of the partition plate 20 in the first direction, and the first reinforcing member 31 extends along the second direction to fully connect the partition plate 20 and the plate body 10.

[0088] In some examples, the plate body 10 includes a plurality of horizontal plates 15 extending along a first direction, the plurality of horizontal plates 15 being spaced apart along a third direction, each of two adjacent horizontal plates 15 independently defining an air guide channel 11, and a first reinforcing member 31 connecting two adjacent horizontal plates 15 along a third direction.

[0089] The thickness of the partition plate 20 extends along the second direction. In the first direction, the partition plate 20 is located between two adjacent first reinforcing members 31. One end of the first reinforcing member 31 in the second direction is flush with or does not exceed the first surface 21 of the partition plate 20, so as to avoid affecting the size of the plate body 10 in the second direction and to prevent the air duct plate 100 from occupying too much space in the second direction. The other end of the first reinforcing member 31 in the second direction extends beyond the second surface 22 of the partition plate 20, so as to increase the stability of the connection between the first reinforcing member 31 and the two adjacent horizontal plates 15, thereby increasing the strength of the air duct plate 100.

[0090] In some embodiments of this utility model, such as Figure 1 , Figure 5 As shown, the main body 10 includes multiple horizontal plates 15 extending along a first direction. The multiple horizontal plates 15 are arranged at intervals along a third direction. The third direction, the first direction, and the second direction are perpendicular to each other. Each of two adjacent horizontal plates 15 independently defines an air guide channel 11. The partition plate 20 independently connects the adjacent horizontal plates 15 in the third direction so that the multiple horizontal plates 15 form a whole. The multiple horizontal plates 15 define multiple air guide channels 11, so that when the air flows in the multiple air guide channels 11, it can carry away the heat on the battery cell 600, thereby dissipating heat from the battery cell 600.

[0091] In some optional embodiments of this utility model, such as Figure 1 , Figure 2 and Figure 5 As shown, the main body 10 of the plate also includes a second reinforcing member 16. Each air duct area 111 is provided with a second reinforcing member 16. The second reinforcing member 16 connects two adjacent horizontal plates 15 along a third direction to form a vent 113 in the air duct area 111. The vent 113 is used to connect the air duct plate 100 on both sides of the second direction, balance the battery cells 600 located on both sides of the air duct plate 100 in the second direction, and reduce the temperature difference between the battery cells 600 located on both sides of the same air duct plate 100 in the second direction.

[0092] The second reinforcing member 16 extends along the first direction in the length direction to increase the connection area between the second reinforcing member 16 and the horizontal plate 15, thereby increasing the stability of the connection between two adjacent horizontal plates 15 in the third direction and improving the overall structural strength of the air duct plate 100. At the same time, the second reinforcing member 16 is used to form multiple horizontal plates 15 into a whole, thereby improving the overall structural strength of the air duct plate 100.

[0093] In some specific embodiments of this utility model, such as Figure 2 As shown, each air duct region 111 is provided with a plurality of second reinforcing members 16 arranged at intervals along the first direction, so as to form a plurality of ventilation openings 113 arranged at intervals along the first direction within the air duct region 111. The plurality of ventilation openings 113 are used to connect the air duct plate 100 on both sides of the second direction, balance the battery cells 600 located on both sides of the air duct plate 100 in the second direction, and reduce the temperature difference between the battery cells 600 located on both sides of the same air duct plate 100 in the second direction.

[0094] In some embodiments, such as Figure 2 As shown, the two end faces of the second reinforcing member 16 in the second direction are spaced apart from the two end faces of the horizontal plate 15 in the second direction, so that the two adjacent vents 113 are connected and the second reinforcing member 16 is prevented from blocking the air passage 11.

[0095] In some optional embodiments of this utility model, such as Figure 2 As shown, the horizontal plate 15 is provided with weight reduction holes 151 to reduce the weight of the horizontal plate 15, thereby reducing the overall weight of the air duct plate 100, while also saving materials and reducing production costs.

[0096] In some specific embodiments of this utility model, such as Figure 2 As shown, the weight reduction hole 151 penetrates the horizontal plate 15 along the second direction.

[0097] In some embodiments, the horizontal plate 15 is provided with a plurality of weight-reducing holes 151 arranged at intervals along the first direction, which facilitates the improvement of the structural strength of the horizontal plate 15 and the overall structural strength of the air duct plate 100.

[0098] In some embodiments of this utility model, such as Figure 1 , Figure 5 As shown, the air duct plate 100 also includes a limiting rib 50, which is disposed on the plate body 10 and extends beyond the plate body 10 in the second direction. The limiting rib 50 is adapted to abut against the side wall of the battery cell 600 in the first direction to limit the position of the battery cell 600 in the first direction.

[0099] In some embodiments, such as Figures 6-8 As shown, the limiting ribs 50 extend beyond the plate body 10 on both sides in the second direction to limit the position of the battery cells 600 located on both sides of the plate body 10 in the second direction in the first direction.

[0100] In some embodiments, the limiting rib 50 is provided on the horizontal plate 15 so that the limiting rib 50 is disposed away from the air guide channel 11, thereby avoiding the limiting rib 50 affecting the air flow in the air guide channel 11.

[0101] In some optional embodiments of this utility model, such as Figure 1 As shown, the air duct plate 100 includes a plurality of limiting ribs 50, which are arranged at intervals along a first direction to limit the position of a plurality of battery cells 600 arranged at intervals along the first direction in the first direction.

[0102] like Figure 6 , Figure 7 As shown, in this embodiment, the battery pack 1000 includes a plurality of battery cells 600, wherein three battery cells 600 are arranged along a first direction to form a battery cell group 610, the battery pack 1000 includes a plurality of battery cell groups 610, the plurality of battery cell groups 610 are arranged along a second direction, the air duct plate 100 is located between two battery cell groups 610, and the horizontal plate 15 is provided with six limiting ribs 50, each pair of limiting ribs 50 being used to limit the position of two battery cells 600 arranged opposite each other in the second direction in the first direction respectively.

[0103] In some optional embodiments of this utility model, in the third direction, limiting ribs 50 are provided at both ends of the plate body 10, and the third direction, the first direction and the second direction are perpendicular to each other, so as to limit the position of the battery cell 600 in the first direction from both ends of the third direction.

[0104] The plate body 10 has limiting ribs 50 at both ends in the third direction, so that each battery cell 600 is respectively stopped and engaged with two limiting ribs 50 on both sides in the first direction. Compared with setting three, four or more limiting ribs 50 on one side of the battery cell 600 in the first direction, this makes it easier to reduce the assembly difficulty of the battery cell 600 and the limiting ribs 50.

[0105] In some embodiments of this utility model, the air duct plate 100 is an integrally formed structure, which makes it easier to reduce processing difficulty and cost.

[0106] In some embodiments, the air duct plate 100 is an aluminum extrusion structure. This allows the air flowing in the air duct 11 to dissipate heat from the battery cell 600. On the other hand, since aluminum has good thermal conductivity, the material properties of the air duct plate 100 can be used to dissipate heat from the battery cell 600.

[0107] In some embodiments, the air duct plate 100 is made of plastic, and the air flowing within the air duct 11 dissipates heat from the battery cell 600. Of course, other materials can also be used, and no further restrictions are imposed here.

[0108] Specifically, the commonly used heat dissipation duct structure is basically a metal structure, which relies on the metal's own heat conduction and heat dissipation capabilities to dissipate heat. However, this utility model mainly uses the air guide channel 11 to achieve heat dissipation, without requiring specific materials. Even if the material itself does not have heat dissipation and heat conduction capabilities, the heat dissipation requirements can still be met based on the structure of the air guide channel 11.

[0109] The following describes a battery pack 1000 according to an embodiment of the present invention. The battery pack 1000 according to an embodiment of the present invention includes a housing 700, a plurality of battery cells 600, and a duct plate 100 according to the above embodiment of the present invention.

[0110] The housing 700 defines a receiving cavity 71, an air inlet 72 connected to the receiving cavity 71, and an air outlet 73. Air enters the receiving cavity 71 and the air guide channel 11 from the air inlet 72 and flows out from the air outlet 73 along the air guide channel 11. During the flow of air along the air guide channel 11, the air can carry away the heat generated by the battery cell 600 to dissipate heat from the battery cell 600.

[0111] Multiple battery cells 600 are disposed within the receiving cavity 71, and at least some of the battery cells 600 are arranged along a first direction to form a single row of battery cell groups 610. In a second direction, the battery cell groups 610 are arranged side by side with the air duct plate 100.

[0112] The separator 20 is positioned directly opposite the gap between at least two adjacent battery cells 600 in the second direction, so as to close the gap between the two adjacent battery cells 600 by using the separator 20, thereby reducing the airflow to the gap between the two adjacent battery cells 600, reducing the generation of turbulence, reducing the impact on the airflow velocity in the air guide channel 11, and improving the heat dissipation efficiency of the battery cells 600.

[0113] According to the embodiment of the present invention, the battery pack 1000 utilizes the air duct plate 100 of the battery pack 1000 according to the above embodiment of the present invention to make the partition plate 20 abut against the battery cell 600, so as to close the gap between two adjacent battery cells 600 by using the partition plate 20, reduce the air entering the gap between two adjacent battery cells 600, reduce the generated turbulence, increase the air flow and velocity in the air guide channel 11, and improve the heat dissipation efficiency and heat dissipation effect of the battery cell 600.

[0114] The battery pack 1000 according to a specific embodiment of the present invention is described below with reference to the accompanying drawings.

[0115] In some specific embodiments of this utility model, such as Figures 7-9 As shown, the battery pack 1000 includes a housing 700, a plurality of battery cells 600, and a duct plate 100 of the above embodiment of the present invention.

[0116] In some embodiments of this utility model, the bottom wall of the receiving cavity 71 is made of iron plate, which has a certain rigidity and strength, and can also play a certain role in heat dissipation. The two opposite side walls of the receiving cavity 71 in the second direction are made of aluminum extrusion structure, which can not only provide overall strength, but also quickly dissipate heat from the battery cells 600 at both ends in the second direction inside the receiving cavity 71, thereby facilitating the improvement of heat dissipation effect of the battery cells 600.

[0117] In some embodiments of this utility model, the partition plate 20 abuts against two adjacent battery cells 600 respectively, so that the partition plate 20 seals the gap between the two adjacent battery cells 600 in the first direction, thereby reducing the air flowing into the gap between the two adjacent battery cells 600, reducing the generation of turbulence, reducing the impact on the air velocity in the air guide channel 11, and improving the heat dissipation efficiency of the battery cells 600.

[0118] At the same time, by making the separator plate 20 abut against the corresponding battery cell 600, the contact area between the air duct plate 100 and the battery cell 600 can be increased, the pressure on the battery cell 600 can be reduced, and the risk of the battery cell 600 being squeezed and cut by the air duct plate 100 can be reduced.

[0119] In some embodiments of this utility model, such as Figure 7 As shown, the battery cell group 610 is arranged in multiple rows along the second direction. In the second direction, the air duct plate 100 and the battery cell group 610 are arranged alternately to reasonably arrange the positions of the air duct plate 100 and the battery cell 600, so that each battery cell 600 can be cooled by at least one air duct plate 100.

[0120] The air duct plate 100 has multiple vents 113 extending along the second direction. The air duct plate 100 divides the receiving cavity 71 into multiple chambers arranged along the second direction. The vents 113 connect two adjacent chambers. Multiple battery cell groups 610 are correspondingly arranged in the chambers. The air guide channel 11 and the vents 113 on the air duct plate 100 connect two adjacent chambers in the second direction. In other words, the multiple chambers arranged in the second direction are connected, which facilitates the equalization of the temperature of the multiple battery cell groups 610.

[0121] Specifically, the air duct 11 on the air duct plate 100 can be used to balance the temperature of the battery cells 600 in the same battery cell group 610. Multiple chambers are connected to each other, which can balance the temperature of multiple battery cell groups 610, and thus balance the temperature of the battery cells 600 in the receiving cavity 71, avoiding excessive temperature differences between different battery cells 600 in the receiving cavity 71.

[0122] like Figure 7 As shown in Figure (a), in this embodiment, the battery pack 1000 includes eight battery cell groups 610, and each battery cell group 610 includes three battery cells 600 arranged along a first direction.

[0123] Among them, T1-T8 are eight battery cells 600 arranged along the second direction, and are located near the air outlet 73; T17-T24 are eight battery cells 600 arranged along the second direction, and are located near the air inlet 72. A temperature probe is installed in the corresponding area of ​​each battery cell 600. The temperature probe is used to detect the temperature change of the battery cell 600, and then to simulate the heat dissipation of multiple battery cells 600.

[0124]

[0125]

[0126] Figure (a)

[0127] Simulation results show that, for battery cells 600 within the same battery cell group 610, the maximum temperature difference between T1, T9, and T17 is 1.95℃; the maximum temperature difference between T2, T10, and T18 is 2.89℃; the maximum temperature difference between T3, T11, and T19 is 2.4℃; the maximum temperature difference between T4, T12, and T20 is 2.75℃; the maximum temperature difference between T5, T13, and T21 is 4.05℃; the maximum temperature difference between T6, T14, and T22 is 1.7℃; the maximum temperature difference between T7, T15, and T23 is 2.74℃; and the maximum temperature difference between T8, T16, and T24 is 3.32℃.

[0128] In summary, the temperature difference between the battery cells 600 within the same battery cell group 610 does not exceed 5°C, which proves that the air guide channel 11 on the air duct plate 100 can balance the temperature of the battery cells 600 within the same battery cell group 610.

[0129] For the multiple battery cells 600 arranged in the second direction, the maximum temperature difference between T1-T8 is 1.57℃; the maximum temperature difference between T9-T16 is 2.58℃; and the maximum temperature difference between T17-T24 is 2.17℃. The temperature difference between the multiple battery cells 600 arranged in the second direction does not exceed 3℃, which proves the temperature uniformity of the battery cells 600 in the multiple chambers.

[0130] In some optional embodiments of this utility model, the air inlet 72 and the air outlet 73 are respectively arranged opposite to the two ends of the air guide channel 11, so as to facilitate the entry of air into the air guide channel 11, facilitate the discharge of air in the air guide channel 11, and reduce the probability of turbulence forming in the receiving cavity 71.

[0131] In some specific embodiments of this utility model, such as Figure 7 , Figure 8 As shown, the air inlet 72 includes multiple air inlet holes 721. The projection of the air inlet holes 721 in the first direction is a regular hexagon, so as to make use of the limited space to form a large air inlet area, thereby ensuring the air volume and the structural strength of the side wall of the receiving cavity 71.

[0132] In some specific embodiments of this utility model, the air outlet 73 includes multiple air outlet holes, and the projection of the air outlet holes in the first direction is a regular hexagon, so as to utilize the limited space to form a large air outlet area, while ensuring the structural strength of the side wall of the receiving cavity 71.

[0133] Other configurations and operations of the battery pack 1000 according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0134] The vehicle according to an embodiment of the present invention is described below. The vehicle according to an embodiment of the present invention includes the battery pack 1000 of the above embodiment of the present invention.

[0135] According to the vehicle of the present invention, by utilizing the battery pack 1000 of the above embodiment of the present invention, the partition plate 20 abuts against the battery cell 600, thereby sealing the gap between two adjacent battery cells 600, reducing the amount of air entering the gap between the two adjacent battery cells 600, reducing the generated turbulence, increasing the airflow and velocity in the air guide channel 11, and improving the heat dissipation efficiency and effect of the battery cell 600.

[0136] Other components and operations of the vehicle according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0137] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. In the description of this utility model, "above" or "below" a second feature may include direct contact between the first and second features, or it may include contact between the first and second features not being in direct contact but through another feature between them.

[0138] In the description of this utility model, the terms "above", "over" and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0139] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0140] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0141] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A duct plate for a battery pack, characterized in that, The battery pack (1000) includes multiple battery cells (600) arranged along a first direction, and the air duct plate (100) includes: The plate body (10) is provided with an air guide channel (11) extending along the first direction; A partition plate (20) is disposed on the plate body (10) to divide the air guide channel (11) into a plurality of air duct regions (111) that are connected in the first direction. Each air duct region (111) corresponds to at least one battery cell (600). The partition plate (20) abuts against the battery cell (600), and the gap between the partition plate (20) and at least two adjacent battery cells (600) is arranged opposite to each other in the second direction. The second direction and the first direction have an angle between them.

2. The air duct plate for a battery pack according to claim 1, characterized in that, At least one surface of the separator (20) abuts against the battery cell (600).

3. The air duct plate for a battery pack according to claim 1, characterized in that, In the second direction, the first surface (21) of the partition plate (20) is flush with the plate body (10), and the first surface (21) abuts against the battery cell (600); or, the first surface (21) of the partition plate (20) protrudes from the plate body (10), and the first surface (21) abuts against the battery cell (600). The second surface (22) of the partition plate (20) is located inside the air guide channel (11) and is spaced apart from the outer periphery of the plate body (10) to define the guide channel (112), and the adjacent air duct area (111) is connected through the guide channel (112).

4. The air duct plate for a battery pack according to claim 3, characterized in that, The first surface (21) is flush with the plate body (10).

5. The air duct plate for a battery pack according to claim 3, characterized in that, In the third direction, the plate body (10) is provided with a plurality of air guiding channels (11), and each air guiding channel (11) is independently provided with a partition plate (20). The third direction, the first direction and the second direction are perpendicular to each other.

6. The air duct plate for a battery pack according to claim 5, characterized in that, In the third direction, the first surface (21) of the adjacent partition plate (20) is located on different sides of the plate body (10) in the second direction.

7. The air duct plate for a battery pack according to claim 3, characterized in that, It also includes a first reinforcing member (31), which is connected to the partition plate (20) and the plate body (10) respectively.

8. The air duct plate for a battery pack according to claim 7, characterized in that, In the first direction, the first reinforcing member (31) is provided at both ends of the partition plate (20).

9. The air duct plate for a battery pack according to any one of claims 1-8, characterized in that, The main body of the plate (10) includes: Multiple horizontal plates (15) extending along the first direction are arranged at intervals along a third direction. The third direction, the first direction, and the second direction are perpendicular to each other. Each of two adjacent horizontal plates (15) independently defines the air guide channel (11). The partition plate (20) independently connects the adjacent horizontal plates (15) in the third direction.

10. The air duct plate for a battery pack according to claim 9, characterized in that, The main body of the plate (10) also includes: The second reinforcing member (16) is provided in each of the air duct regions (111). The second reinforcing member (16) connects two adjacent horizontal plates (15) along the third direction to form a vent (113) in the air duct region (111). The length direction of the second reinforcing member (16) extends along the first direction.

11. The air duct plate for a battery pack according to claim 10, characterized in that, Each of the air duct regions (111) is provided with a plurality of second reinforcing members (16) arranged at intervals along the first direction, so as to separate and form a plurality of vents (113) arranged at intervals along the first direction within the air duct region (111).

12. The air duct plate for a battery pack according to claim 9, characterized in that, The horizontal plate (15) is provided with weight reduction holes (151).

13. The air duct plate for a battery pack according to claim 12, characterized in that, The weight reduction hole (151) penetrates the cross plate (15) along the second direction.

14. The air duct plate for a battery pack according to any one of claims 1-8, characterized in that, It also includes a limiting rib (50), which is disposed on the plate body (10) and extends beyond the plate body (10) in the second direction. The limiting rib (50) is adapted to abut against the side wall of the battery cell (600) in the first direction.

15. The air duct plate for a battery pack according to claim 14, characterized in that, It includes multiple limiting ribs (50), which are arranged at intervals along the first direction.

16. The air duct plate for a battery pack according to claim 14, characterized in that, In the third direction, the limiting ribs (50) are provided at both ends of the plate body (10), and the third direction, the first direction and the second direction are perpendicular to each other.

17. A battery pack (1000), characterized in that, include: The housing (700) defines a receiving cavity (71), an air inlet (72) communicating with the receiving cavity (71), and an air outlet (73); Multiple battery cells (600) are disposed in the receiving cavity (71), and at least some of the battery cells (600) are arranged along a first direction to form a single row of battery cells (610). A duct plate (100), wherein the duct plate (100) is the duct plate (100) according to any one of claims 1-16, wherein in the second direction, the battery cell group (610) is spaced apart from the duct plate (100).

18. The battery pack (1000) according to claim 17, characterized in that, The separator (20) abuts against the corresponding adjacent battery cell (600).

19. The battery pack (1000) according to claim 17, characterized in that, The battery cell group (610) is arranged in multiple rows along the second direction, and the air duct plate (100) and the battery cell group (610) are arranged alternately in the second direction.

20. The battery pack according to claim 19, characterized in that, The air inlet (72) and the air outlet are respectively positioned opposite to the two ends of the air guide channel (11).

21. The battery pack according to claim 20, characterized in that, The air inlet (72) includes a plurality of air inlet holes (721), and the projection of the air inlet holes (721) in the first direction is a regular hexagon; And / or, the air outlet includes a plurality of air holes, the projection of which in the first direction is a regular hexagon.

22. A vehicle, characterized in that, Includes the battery pack (1000) according to any one of claims 17-21.

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