Exhaust plate, leaked liquid collecting device, battery pack and electric device

Abstract

The utility model discloses an air exhaust plate, a leaked liquid collecting device, a battery pack and an electric device, the air exhaust plate comprises a plate body, the plate body is provided with an air exhaust structure, two sides of the air exhaust structure are respectively an air inlet side and an air outlet side, at least one liquid leakage hole is formed in the plate body, and the liquid leakage hole is located in the air outlet side. According to the exhaust plate disclosed by the utility model, leaked liquid of a damaged battery cell can be collected, the leaked liquid is prevented from being in contact with surrounding battery cells, and air is easily exhausted to cool the battery cells, so that the service life of a battery pack is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to an exhaust plate, a leakage collection device, a battery pack and an electric device. Background Art

[0002] The battery pack is the power source of the vehicle system and has always been regarded as a landmark technology in the development of electric vehicles. Its performance is directly related to the vehicle's range.

[0003] In the related art, when a battery pack is damaged, the battery cells of the battery pack may leak, and the leaked electrolyte will contact other normal battery cells around it, causing multiple battery cells to be unable to be used normally, thereby shortening the service life of the battery pack. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide an exhaust plate that can collect the leaked liquid of the damaged battery cell to prevent the leaked liquid from contacting the surrounding battery cells, and is also easy to exhaust air to cool the battery cell, thereby extending the service life of the battery pack.

[0005] The second purpose of the utility model is to provide a leakage collection device using the above exhaust plate.

[0006] The third object of the present utility model is to provide a battery pack using the above leakage collection device.

[0007] The fourth objective of the present utility model is to provide an electrical device using the above-mentioned battery pack.

[0008] According to the first aspect of the present invention, the exhaust plate includes a plate body, an exhaust structure is provided on the plate body, the two sides of the exhaust structure are respectively an air inlet side and an air outlet side, and at least one leakage hole is formed on the plate body, and the leakage hole is located on the air outlet side.

[0009] According to the exhaust plate of the utility model, the exhaust plate has a simple structure and is easy to use. When the exhaust plate is used for a battery pack, the cooling air can contact the side of the battery cell facing the exhaust plate to take away the heat of the battery cell and cool down the battery cell, thereby facilitating the normal use of the battery pack for a long time. In addition, when the battery cell leaks, the leaked liquid can fall onto the exhaust plate, and during the flow of the cooling air, the leaked liquid can be blown along the exhaust structure to the leakage hole to be discharged from the leakage hole to the outside of the exhaust plate, thereby avoiding the contact between the leaked liquid and the surrounding battery cells, thereby effectively ensuring that the surrounding battery cells can be used normally, extending the service life of the battery cell and the battery pack, improving the performance of the battery pack, and also improving the performance of the exhaust plate.

[0010] According to some embodiments of the utility model, at least one exhaust groove is formed on the exhaust structure, and the exhaust groove extends along a first direction. A side of the exhaust groove adjacent to the air outlet side is connected to the leakage hole, and the first direction is from the air inlet side toward the air outlet side.

[0011] According to some embodiments of the utility model, the exhaust structure includes: at least one exhaust group, the exhaust group includes a first exhaust plate and a second exhaust plate, the first exhaust plate and the second exhaust plate both extend along a first direction, the first exhaust plate and the second exhaust plate are arranged along a second direction, the adjacent sides of the first exhaust plate and the second exhaust plate are connected to each other, the sides of the first exhaust plate and the second exhaust plate facing away from each other extend obliquely along a third direction toward a side away from the leakage hole, the first exhaust plate and the second exhaust plate jointly define the exhaust slot, the leakage hole is opposite to the exhaust slot, and the first direction, the second direction and the third direction are orthogonal.

[0012] According to some embodiments of the utility model, a first supporting rib is connected between the adjacent sides of the first exhaust plate and the second exhaust plate along the second direction, and the free end of the first supporting rib extends along the third direction toward the side away from the leakage hole.

[0013] According to some embodiments of the present invention, the side of the first exhaust plate and the second exhaust plate facing away from each other along the second direction are located in the same plane as the surface of the first supporting rib along the third direction facing away from the liquid leakage hole.

[0014] According to some embodiments of the utility model, a first liquid-blocking rib is connected between one end of the first exhaust plate along the first direction away from the liquid leakage hole and the first supporting rib; and / or a second liquid-blocking rib is connected between one end of the second exhaust plate along the first direction away from the liquid leakage hole and the first supporting rib.

[0015] According to some embodiments of the present invention, there are multiple exhaust groups, and the multiple exhaust groups are connected in sequence along the second direction.

[0016] According to some embodiments of the utility model, a second supporting rib is connected between two adjacent exhaust groups, and a free end of the second supporting rib extends along the third direction toward the side where the leakage hole is located.

[0017] According to some embodiments of the utility model, the first support rib and the second support rib have the same height along the third direction; or, the free end face of the second support rib and the side face of the first support rib along the third direction facing the leakage hole are in the same plane, and the free end face of the first support rib and the side face of the second support rib along the third direction away from the leakage hole are in the same plane.

[0018] According to some embodiments of the utility model, one end of the first exhaust plate and the second exhaust plate adjacent to the liquid leakage hole along the first direction is provided with a guide plate extending obliquely toward the side where the liquid leakage hole is located.

[0019] According to some embodiments of the utility model, a leakage collection groove is formed on the plate body, the leakage collection groove is located on the air outlet side, and the leakage hole is formed on the inner wall of the leakage collection groove.

[0020] According to some embodiments of the utility model, the plate body includes: two first side panels, the two first side panels extend along the first direction, the two first side panels are respectively connected to the two sides of the exhaust structure along the second direction, the first direction is perpendicular to the second direction, and the first direction is the direction from the air inlet side toward the air outlet side; a second side panel, the second side panel is connected between the two first side panels, the second side panel and the exhaust structure are spaced apart from each other to define the liquid leakage collection groove, and the liquid leakage hole is formed on the bottom wall of the liquid leakage collection groove.

[0021] The leakage liquid collection device according to the embodiment of the second aspect of the utility model comprises at least one exhaust plate according to the embodiment of the first aspect of the utility model.

[0022] According to some embodiments of the utility model, the leakage collection device further includes: a leakage collection bottom plate, wherein the leakage collection bottom plate is arranged below the exhaust plate, and the leakage on the exhaust plate is suitable for flowing to the leakage collection bottom plate through the leakage hole.

[0023] According to some embodiments of the present invention, the top of the leakage collecting bottom plate is open, and at least one supporting structure is provided inside the leakage collecting bottom plate.

[0024] According to some embodiments of the present utility model, a liquid leakage detection component is provided on the leakage collection bottom plate.

[0025] According to some embodiments of the present invention, there are multiple exhaust plates, and the multiple exhaust plates are arranged along a third direction.

[0026] According to some embodiments of the utility model, the plurality of exhaust plates are stacked along the third direction, and two adjacent exhaust plates are positioned by a first positioning structure; the leakage collection bottom plate and the lowest one among the plurality of exhaust plates are positioned by a second positioning structure.

[0027] According to the battery pack of the third aspect embodiment of the utility model, it includes: a plurality of battery cells, the plurality of battery cells are arranged along a third direction; a leakage collection device, the leakage collection device is the leakage collection device according to the second aspect embodiment of the utility model, the exhaust plate of the leakage collection device is arranged between two adjacent battery cells, and the leakage collection bottom plate of the leakage collection device is located at the bottom of the lowest battery cell.

[0028] The electrical device according to the fourth aspect of the present invention comprises a battery pack according to the third aspect of the present invention.

[0029] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0031] Figure 1 is a schematic diagram of an exhaust plate according to an embodiment of the utility model;

[0032] Figure 2 is a schematic diagram of a leakage collection device according to an embodiment of the utility model;

[0033] Figure 3 is a schematic diagram of a leakage collecting bottom plate of a leakage collecting device according to an embodiment of the utility model;

[0034] Figure 4 is a schematic diagram of a battery pack according to an embodiment of the utility model;

[0035] Figure 5 It is a schematic diagram of a battery pack according to an embodiment of the utility model from another angle, wherein the cover plate is not shown.

[0036] Reference numerals:

[0037] 100. Exhaust plate;

[0038] 1. Plate body; 11. Exhaust structure; 111. Air inlet side; 112. Air outlet side; 113. Exhaust group;

[0039] 1131, first air exhaust plate; 1132, second air exhaust plate; 1133, first supporting rib; 114, air exhaust slot;

[0040] 12. liquid leakage hole; 13. first liquid retaining rib; 14. second liquid retaining rib; 15. second supporting rib;

[0041] 16. guide plate; 17. leakage collecting tank; 18. first side plate; 19. second side plate;

[0042] 200. Leakage collection device;

[0043] 201, leakage collecting bottom plate; 2011, supporting structure; 2012, leakage detection part;

[0044] 300, battery pack;

[0045] 301, battery cell; 302, housing; 3021, air inlet; 3022, air outlet; 303, cover plate. DETAILED DESCRIPTION

[0046] The embodiments of the present invention are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. Figure 1 The exhaust plate 100 according to the first embodiment of the utility model is described. The exhaust plate 100 can be used in the battery pack 300, but is not limited thereto. In the following description of the present application, the exhaust plate 100 is described in detail by taking the battery pack 300 as an example.

[0047] like Figure 1 As shown, the exhaust plate 100 according to the first embodiment of the utility model includes a plate body 1.

[0048] Specifically, the plate body 1 is provided with an exhaust structure 11, and two sides of the exhaust structure 11 (for example, Figure 1 The left and right sides in the figure are respectively the air inlet side 111 and the air outlet side 112. At least one leakage hole 12 is formed on the plate body 1, and the leakage hole 12 is located on the air outlet side 112. For example, Figure 1 and Figure 2 In the example, the air inlet side 111 is located on the left side of the exhaust structure 11, the air outlet side 112 is located on the right side of the exhaust structure 11, and the leakage hole 12 is formed at the right end of the plate body 1. When the exhaust plate 100 is used for the battery pack 300, the exhaust plate 100 is located below the battery cell 301 in the battery pack 300.

[0049] With such arrangement, after cooling air is introduced into the battery pack 300, the cooling air can flow from the air inlet side 111 along the exhaust structure 11 to the air outlet side 112, so that the cooling air can contact the side of the battery cell 301 facing the exhaust plate 100 to take away the heat of the battery cell 301, thereby cooling the battery cell 301, thereby avoiding thermal failure of the battery cell 301, which is beneficial to the normal use of the battery pack 300 for a long time. In addition, when the battery pack 300 is damaged and the battery cell 301 leaks liquid (for example, electrolyte), the leaked liquid on the battery cell 301 can fall onto the exhaust plate 100. Under the blowing of cooling air, the leaked liquid moves from left to right, flows to the leakage hole 12, and then is discharged from the leakage hole 12 to the outside of the exhaust plate 100, thereby effectively avoiding the contact between the leaked liquid and the surrounding battery cells 301 and avoiding damage to the surrounding battery cells 301, which in turn helps the surrounding battery cells 301 to be used normally for a long time, extends the service life of the battery cells 301, and improves the performance of the battery pack 300.

[0050] According to the exhaust plate 100 of the utility model, the exhaust plate 100 has a simple structure and is easy to use. When the exhaust plate 100 is used for the battery pack 300, the cooling air can contact the side of the battery cell 301 facing the exhaust plate 100 to take away the heat of the battery cell 301, so as to cool down the battery cell 301, thereby facilitating the normal use of the battery pack 300 for a long time. In addition, when the battery cell 301 leaks, the leaked liquid can fall onto the exhaust plate 100, and during the flow of the cooling air, the leaked liquid can be blown along the exhaust structure 11 to the leakage hole 12 to be discharged from the leakage hole 12 to the outside of the exhaust plate 100, thereby avoiding the contact between the leaked liquid and the surrounding battery cells 301, thereby effectively ensuring that the surrounding battery cells 301 can be used normally, extending the service life of the battery cells 301 and the battery pack 300, improving the performance of the battery pack 300, and also improving the performance of the exhaust plate 100.

[0051] According to some embodiments of the present invention, referring to Figure 1 At least one exhaust slot 114 is formed on the exhaust structure 11, and the exhaust slot 114 is along a first direction (eg Figure 1 The first direction is from the air inlet side 111 to the air outlet side 112. For example, Figure 1In the example, the exhaust groove 114 is concave downward, and the right end of the exhaust groove 114 is connected to the leakage hole 12. The leaked liquid on the battery cell 301 falls into the exhaust groove 114. Under the blowing of the cooling wind, the leaked liquid moves from the side wall of the exhaust groove 114 from left to right, flows to the leakage hole 12, and then is discharged from the leakage hole 12 to the outside of the exhaust plate 100. In this way, the exhaust groove 114 can collect the leaked liquid, so that it is convenient to collect the leaked liquid together and discharge the leaked liquid from the leakage hole 12 together, which effectively ensures that the leaked liquid can be collected and discharged, thereby further improving the performance of the exhaust structure 11. Moreover, the exhaust groove 114 has a simple structure and is easy to produce, thereby improving the production efficiency of the exhaust structure 11.

[0052] According to some embodiments of the present invention, referring to Figure 1 The exhaust structure 11 includes at least one exhaust group 113, and the exhaust group 113 includes a first exhaust plate 1131 and a second exhaust plate 1132. The first exhaust plate 1131 and the second exhaust plate 1132 are both along a first direction (for example Figure 1 The first air exhaust plate 1131 and the second air exhaust plate 1132 extend in a second direction (eg, Figure 1 The first air exhaust plate 1131 and the second air exhaust plate 1132 are arranged in a front-to-back direction (shown in the figure), the adjacent sides of the first air exhaust plate 1131 and the second air exhaust plate 1132 are connected to each other, and the sides of the first air exhaust plate 1131 and the second air exhaust plate 1132 that are separated from each other are arranged in a third direction (for example Figure 1 The upper and lower directions shown in the figure) extend obliquely toward the side away from the leakage hole 12.

[0053] For example, in Figure 1In the example, the first exhaust plate 1131 and the second exhaust plate 1132 in the exhaust group 113 are connected at adjacent sides, that is, the front side of the first exhaust plate 1131 (that is, one side of the first exhaust plate 1131 in the second direction) and the rear side of the second exhaust plate 1132 (that is, one side of the second exhaust plate 1132 in the second direction) are connected, and the first exhaust plate 1131 and the second exhaust plate 1132 in the exhaust group 113 are extended in a direction away from each other and tilted upward, that is, the rear side of the first exhaust plate 1131 (that is, the other side of the first exhaust plate 1131 in the second direction) extends in a direction from front to back and tilted upward, and the front side of the second exhaust plate 1132 (that is, the other side of the second exhaust plate 1132 in the second direction) extends in a direction from back to front and tilted upward. The cross-sectional shape of the first exhaust plate 1131 and the second exhaust plate 1132 in the up-down direction is roughly "V"-shaped. Thus, after the leaked liquid of the battery cell 301 falls onto the exhaust plate 100, the leaked liquid flows along the inclined first exhaust plate 1131 or the inclined second exhaust plate 1132 to the connection between the front side of the first exhaust plate 1131 and the rear side of the second exhaust plate 1132, so as to facilitate the collection of the leaked liquid in one place, and facilitate the leaked liquid to move together from left to right under the action of the cooling wind, which is conducive to the leaked liquid flowing to the leakage hole 12, and can also avoid the leaked liquid from splashing. In addition, the connection between the first exhaust plate 1131 and the second exhaust plate 1132 is spaced from the battery cell 301, so as to avoid the battery cell 301 from contacting the leaked liquid on the side facing the exhaust plate 100, thereby helping to reduce the degree of damage to the battery cell 301, so as to facilitate the later maintenance of the battery cell 301.

[0054] Combination Figure 1 The first exhaust plate 1131 and the second exhaust plate 1132 jointly define an exhaust slot 114, the leakage hole 12 is opposite to the exhaust slot 114, and the first direction, the second direction and the third direction are orthogonal. Figure 1 In the example, the connection between the front side of the first exhaust plate 1131 and the rear side of the second exhaust plate 1132 jointly defines the exhaust slot 114, and the leakage hole 12 is located at the right end of the first exhaust plate 1131 and the second exhaust plate 1132, that is, the leakage hole 12 is located at the right end of the exhaust slot 114. Thus, it is effectively ensured that under the blowing of cooling air, the leakage liquid can flow along the first exhaust plate 1131 and the second exhaust plate 1132 (that is, the side wall of the exhaust slot 114) to the leakage hole 12, which reduces the distance between the leakage liquid and the leakage hole 12, which is conducive to the leakage liquid to flow into the leakage hole 12 in large quantities and accurately, thereby effectively ensuring that the leakage liquid can be discharged outside the exhaust plate 100, and improving the performance of the exhaust plate 100.

[0055] According to some embodiments of the present invention, referring to Figure 1A first supporting rib 1133 is connected between the adjacent sides of the first exhaust plate 1131 and the second exhaust plate 1132 along the second direction (i.e., the front-to-back direction), and the free end of the first supporting rib 1133 extends along the third direction (i.e., the up-down direction) toward the side away from the leakage hole 12.

[0056] For example, in Figure 1 In the example, the first support rib 1133 is located between the front side of the adjacent first exhaust plate 1131 and the rear side of the second exhaust plate 1132, the front side of the first exhaust plate 1131 and the rear side of the second exhaust plate 1132 are both connected to the lower end of the first support rib 1133, and the upper end (i.e., the free end) of the first support rib 1133 extends upward. In this way, the first support rib 1133 can separate the space between the first exhaust plate 1131 and the second exhaust plate 1132 into two parts, so that the cooling wind blows the leaked liquid on the front and rear sides of the first support rib 1133 to move along the extension direction of the first support rib 1133, and it is easy to discharge the leaked liquid outside the exhaust plate 100. In addition, the first support rib 1133 strengthens the connection stability of the first exhaust plate 1131 and the second exhaust plate 1132, so as to improve the structural strength of the exhaust plate 100, thereby helping to extend the service life of the exhaust plate 100. In addition, the first supporting ribs 1133 can support the battery cells 301 , thereby improving the use stability of the battery cells 301 and preventing the battery cells 301 from moving downward, thereby improving the use stability of the battery pack 300 .

[0057] Further, refer to Figure 1 , the side of the first exhaust plate 1131 and the second exhaust plate 1132 that are separated from each other along the second direction (i.e., the front-to-back direction) and the side surface of the first support rib 1133 that is away from the leakage hole 12 along the third direction (i.e., the up-down direction) are located in the same plane. Figure 1 In the example, the rear side of the first exhaust plate 1131 and the front side of the second exhaust plate 1132 are located in the same plane as the upper surface of the first support rib 1133, that is, the side of the first exhaust plate 1131 and the second exhaust plate 1132 that are away from each other are located in the same plane as the upper surface of the first support rib 1133. In this way, the rear side of the first exhaust plate 1131, the front side of the second exhaust plate 1132 and the upper side of the first support rib 1133 are all abutted against the side of the battery cell 301 facing the exhaust plate 100, thereby further improving the supporting effect of the exhaust plate 100 on the battery cell 301, and also improving the matching stability of the battery cell 301 and the exhaust plate 100, thereby further improving the use stability of the battery cell 301. In addition, the first exhaust plate 1131, the second exhaust plate 1132 and the first support rib 1133 have simple structures and are easy to produce, thereby improving the production efficiency of the exhaust plate 100.

[0058] According to some embodiments of the present invention, referring to Figure 1, a first liquid blocking rib 13 is connected between one end of the first exhaust plate 1131 away from the liquid leakage hole 12 along the first direction (i.e., the left-right direction) and the first supporting rib 1133. And / or, a second liquid blocking rib 14 is connected between one end of the second exhaust plate 1132 away from the liquid leakage hole 12 along the first direction and the first supporting rib 1133. For example, the arrangement of the first liquid blocking rib 13 and the second liquid blocking rib 14 includes the following situations: First, the first liquid blocking rib 13 is connected between one end of the first exhaust plate 1131 away from the liquid leakage hole 12 along the first direction and the first supporting rib 1133. Second, the second liquid blocking rib 14 is connected between one end of the second exhaust plate 1132 away from the liquid leakage hole 12 along the first direction and the first supporting rib 1133. Third, the first liquid blocking rib 13 is connected between one end of the first exhaust plate 1131 away from the liquid leakage hole 12 along the first direction and the first supporting rib 1133. At the same time, a second liquid blocking rib 14 (such as Figure 1 shown).

[0059] For example, in Figure 1 In the example, the first liquid blocking rib 13 is located between the left end of the first exhaust plate 1131 and the left end of the first support rib 1133, and the second liquid blocking rib 14 is located between the left end of the second exhaust plate 1132 and the left end of the first support rib 1133. In this way, after the leaked liquid falls on the exhaust plate 100, the first liquid blocking rib 13 and the second liquid blocking rib 14 can block the leaked liquid from flowing out of the exhaust plate 100 from the air inlet side 111, so that the leaked liquid can smoothly flow to the leaking hole 12 under the action of the cooling wind, and avoid the leaked liquid from flowing to the surrounding battery cells 301, thereby improving the performance of the exhaust plate 100 and helping the surrounding battery cells 301 to be used normally for a long time.

[0060] According to some embodiments of the present invention, referring to Figure 1 , there are multiple exhaust groups 113, and the multiple exhaust groups 113 are sequentially connected along the second direction (i.e., the front-to-back direction). In the description of the present utility model, the meaning of "multiple" is two or more. For example, in Figure 1In the example, there are four exhaust groups 113, and the four exhaust groups 113 are connected in sequence along the front-to-back direction. The exhaust group 113 on the front side of the exhaust plate 100 only contains the first exhaust plate 1131, and the exhaust group 113 on the rear side of the exhaust plate 100 only contains the second exhaust plate 1132. After the multiple exhaust groups 113 are connected, they are roughly wavy. In this way, the leaked liquid can fall into different exhaust groups 113, which is conducive to the collection of leaked liquid at different positions of the battery cell 301, improves the reliability of the exhaust plate 100, and also helps to reduce the content of the leaked liquid in each exhaust group 113, so that it is easy for the cooling wind to blow the leaked liquid to move, which helps to reduce the energy of the cooling wind. In addition, the setting of multiple exhaust groups 113 also further increases the structural strength of the exhaust plate 100, thereby helping to further extend the service life of the exhaust plate 100. It should be noted that the number and arrangement of the exhaust groups 113 can be set according to the use to better meet the actual application.

[0061] According to some embodiments of the present invention, referring to Figure 1 A second supporting rib 15 is connected between two adjacent exhaust groups 113 , and a free end of the second supporting rib 15 extends along a third direction (ie, up and down direction) toward the side where the leakage hole 12 is located.

[0062] For example, in Figure 1 In the example, the second support rib 15 is located between the rear side of the first exhaust plate 1131 and the front side of the second exhaust plate 1132 in the two adjacent exhaust groups 113, the upper end of the second support rib 15 is connected to the rear side of the first exhaust plate 1131 in the two adjacent exhaust groups 113, the upper end of the second support rib 15 is connected to the front side of the second exhaust plate 1132 in the two adjacent exhaust groups 113, and the lower end (i.e., the free end) of the second support rib 15 extends downward. Thus, the second support rib 15 strengthens the connection strength between the first exhaust plate 1131 and the second exhaust plate 1132 in the two adjacent exhaust groups 113, thereby helping to improve the structural strength of the exhaust plate 100, thereby improving the use stability of the exhaust plate 100, and also helping to further extend the service life of the exhaust plate 100.

[0063] According to some embodiments of the present invention, referring to Figure 1, the first support rib 1133 and the second support rib 15 have the same height along the third direction (i.e., the up-down direction). Therefore, the first support rib 1133 and the second support rib 15 have the same height and can be produced at the same time, thereby improving the production efficiency of the exhaust plate 100. In addition, it is also convenient for the upper side of the first support rib 1133 and the upper side of the second support rib 15 to be in the same plane when the lower side of the first support rib 1133 and the lower side of the second support rib 15 are in the same plane, so that the first support rib 1133 and the second support rib 15 can support the battery cell 301 at the same time, further improving the supporting effect of the exhaust plate 100 on the battery cell 301, and further improving the matching stability of the battery cell 301 and the exhaust plate 100, thereby further improving the use stability of the battery pack 300.

[0064] According to other embodiments of the present invention, Figure 1 The above-mentioned free end face of the second support rib 15 and the side face of the first support rib 1133 along the third direction toward the leakage hole 12 are in the same plane, and the above-mentioned free end face of the first support rib 1133 and the side face of the second support rib 15 along the third direction away from the leakage hole 12 are in the same plane.

[0065] For example, in Figure 1 In the example, the upper end face of the first support rib 1133 (i.e., the free end of the first support rib 1133) and the upper end face of the second support rib 15 are in the same plane, and the lower end face of the first support rib 1133 and the lower end face of the second support rib 15 (i.e., the free end of the second support rib 15) are in the same plane. This arrangement effectively ensures that the side faces of the first support rib 1133 and the second support rib 15 in the same plane can support the battery cell 301 at the same time, thereby further improving the supporting effect of the exhaust plate 100 on the battery cell 301, and further improving the matching stability between the battery cell 301 and the exhaust plate 100, thereby further improving the use stability of the battery pack 300.

[0066] Optionally, refer to Figure 1 The first exhaust plate 1131 and the second exhaust plate 1132 are provided with a guide plate 16 extending obliquely toward the side where the leakage hole 12 is located at one end thereof along the first direction (i.e., the left-right direction). Figure 1In the example, the guide plate 16 is connected to the right end of the first exhaust plate 1131 and the right end of the second exhaust plate 1132 in the two adjacent exhaust groups 113, and the guide plate 16 extends obliquely from top to bottom and toward the leakage hole 12. Thus, the guide plate 16 can seal the right side of the first exhaust plate 1131 and the right side of the second exhaust plate 1132 of the two adjacent exhaust groups 113, thereby preventing the leakage from flowing out between the first exhaust plate 1131 and the second exhaust plate 1132, thereby improving the sealing performance of the exhaust plate 100. In addition, the guide plate 16 is arranged obliquely, which can prevent the leakage from being retained on the guide plate 16, and is conducive to the leakage flowing along the guide plate 16 to the bottom wall of the exhaust plate 100, thereby preventing the leakage from contacting the battery cell 301.

[0067] According to some embodiments of the present invention, referring to Figure 1 A leakage collection groove 17 is formed on the plate body 1, and the leakage collection groove 17 is located on the air outlet side 112, and the leakage hole 12 is formed on the inner wall of the leakage collection groove 17. Figure 1 In the example, the leakage collection groove 17 is formed at the right end of the plate body 1, the leakage hole 12 penetrates the side wall or the bottom wall of the leakage collection groove 17, and the lower side of the guide plate 16 is connected to the bottom wall of the leakage collection groove 17. In this way, part of the leakage on the exhaust plate 100 will flow along the guide plate 16 to the leakage collection groove 17, and the leakage on the leakage collection groove 17 will flow along the inner wall of the leakage collection groove 17 to the leakage hole 12, thereby effectively ensuring that the leakage can flow to the outside of the exhaust plate 100, thereby improving the performance of the exhaust plate 100. Moreover, the leakage is collected in the leakage collection groove 17, which can effectively prevent the battery cell 301 from being immersed in the leakage, thereby helping to reduce the degree of damage to the battery cell 301.

[0068] According to some embodiments of the present invention, referring to Figure 1 The board body 1 includes two first side boards 18 and a second side board 19 .

[0069] Specifically, the two first side panels 18 extend along the first direction (i.e., the left-right direction), and the two first side panels 18 are respectively connected to the two sides of the exhaust structure 11 along the second direction (i.e., the front-back direction). The first direction is perpendicular to the second direction, and the first direction is the direction from the air inlet side 111 toward the air outlet side 112.

[0070] For example, in Figure 1In the example, the two first side panels 18 are respectively located at the front and rear sides of the exhaust plate 100, the lower end of the first side panel 18 at the front side is connected to the front side of the first exhaust plate 1131 at the front edge of the exhaust plate 100, the left side of the first exhaust plate 1131 at the front side and the left side of the first exhaust plate 1131 at the front edge of the exhaust plate 100 are connected with the first liquid blocking rib 13, the lower end of the first side panel 18 at the rear side is connected to the rear side of the second exhaust plate 1132 at the rear edge of the exhaust plate 100, and the left side of the first side panel 18 at the rear side is connected to the left side of the second exhaust plate 1132 at the rear edge of the exhaust plate 100. With such a configuration, when the leaked liquid flows along the exhaust group 113 at the edge of the exhaust plate 100, the two first side panels 18 can block the leaked liquid, preventing the leaked liquid from flowing out along the front and rear sides of the exhaust plate 100, thereby preventing the leaked liquid from damaging the surrounding battery cells 301, thereby facilitating the normal use of the battery pack 300 for a long time. In addition, the two first side plates 18 can also support the battery cells 301 , thereby further improving the stability of the battery cells 301 , and further improving the stability of the battery pack 300 .

[0071] Combination Figure 1 The second side plate 19 is connected between the two first side plates 18 , the second side plate 19 and the exhaust structure 11 are spaced apart from each other to define a leakage collection groove 17 , and the leakage hole 12 is formed on the bottom wall of the leakage collection groove 17 .

[0072] For example, in Figure 1 In the example, the second side plate 19 extends in the front-to-back direction, the front and rear ends of the second side plate 19 are respectively connected to the right ends of the two first side plates 18, the second side plate 19 and the exhaust structure 11 are arranged at intervals in the left-right direction, the leakage collection groove 17 is formed between the exhaust structure 11 and the second side plate 19, and the leakage hole 12 penetrates the bottom wall of the leakage collection groove 17. Thus, the two first side plates 18 are connected by the second side plate 19, which improves the connection stability of the two first side plates 18, thereby helping to further improve the structural stability of the exhaust plate 100. Moreover, the first side plate 18 and the second side plate 19 have simple structures and are easy to produce, thereby improving the production efficiency of the first side plate 18 and the second side plate 19, reducing the production costs of the first side plate 18 and the second side plate 19, and thus improving the production efficiency of the exhaust plate 100. In addition, the provision of the second side plate 19 helps to form the leakage collection groove 17, thereby effectively ensuring the function of the leakage collection groove 17 to collect leakage. In addition, the leakage hole 12 is formed on the bottom wall of the leakage collection groove 17, which also facilitates the leakage to flow from the leakage hole 12 along the bottom wall of the leakage collection groove 17 to the outside of the exhaust plate 100, thereby effectively ensuring the performance of the exhaust plate 100.

[0073] According to the leakage collection device 200 of the second embodiment of the utility model, refer to Figure 2, including at least one exhaust plate 100 according to the embodiment of the first aspect of the utility model.

[0074] According to the leakage collection device 200 of the present invention, by adopting the above-mentioned exhaust plate 100, the exhaust plate 100 can collect the leakage, and can also allow cooling air to pass between the exhaust plate 100 and the battery cell 301 to take away the heat on the battery cell 301 and cool down the battery cell 301, thereby improving the performance of the leakage collection device 200.

[0075] According to some embodiments of the present invention, referring to Figure 2 and Figure 3 The leakage collection device 200 further includes a leakage collection bottom plate 201, which is arranged below the exhaust plate 100, and the leakage on the exhaust plate 100 is suitable for flowing to the leakage collection bottom plate 201 through the leakage hole 12. Figure 2 and Figure 3 In the example of FIG. 1 , under the blowing of cooling air, the leaked liquid can flow along the side wall of the exhaust slot 114 of the exhaust structure 11 to the leaking hole 12, and then flow from the leaking hole 12 to the leaking liquid collecting bottom plate 201. Thus, the leaking liquid collecting bottom plate 201 can collect the leaked liquid, thereby preventing the leaked liquid from flowing to other locations in the battery pack 300 and preventing the surrounding battery cells 301 from being damaged.

[0076] According to some embodiments of the present invention, referring to Figure 3 The top of the leakage collecting bottom plate 201 is open, and at least one supporting structure 2011 is provided inside the leakage collecting bottom plate 201. Figure 3 In the example, the leakage collecting bottom plate 201 is open toward one side of the exhaust plate 100, that is, the upper side of the leakage collecting bottom plate 201 is open, and the support structure 2011 is connected to the inner side wall of the leakage collecting bottom plate 201. Thus, it is effectively ensured that the leakage can flow from the leakage hole 12 to the leakage collecting bottom plate 201, so that the leakage collecting device 200 can collect the leakage. In addition, the support structure 2011 can support the battery cell 301, thereby improving the matching stability between the battery cell 301 and the leakage collecting device 200, and further improving the use stability of the leakage collecting device 200.

[0077] According to some embodiments of the present invention, referring to Figure 3 , a leakage detection member 2012 is provided on the leakage collecting bottom plate 201. For example, Figure 3In the example, the leakage detection member 2012 is located on the bottom wall of the leakage collection base plate 201, and the leakage detection member 2012 is used to detect leakage. Therefore, when the leakage flows onto the leakage collection base plate 201, the leakage detection member 2012 detects the leakage and issues an alarm, so that the staff can receive the signal that the battery cell 301 is damaged in time, so that the staff can repair the battery cell 301 in time, thereby avoiding increasing the degree of damage to the battery cell 301. For example, the leakage detection member 2012 can be a sensor. But it is not limited to this.

[0078] Optionally, refer to Figure 3 , the upper surface of the leakage detection member 2012 is lower than the bottom wall of the leakage collection bottom plate 201. Thus, it is convenient for the leakage to flow onto the leakage detection member 2012, thereby effectively ensuring that when the leakage flows onto the leakage collection bottom plate 201, the leakage detection member 2012 can issue an alarm in time, thereby improving the detection accuracy of the leakage detection member 2012.

[0079] According to some embodiments of the present invention, referring to Figure 2 There are multiple exhaust plates 100, and the multiple exhaust plates 100 are arranged along the third direction (vertical direction). Figure 2 In the example, three exhaust plates 100 are provided, and the three exhaust plates 100 are arranged at intervals in the up-down direction. When the leakage collection device 200 is used for the battery pack 300, the battery cells 301 of the battery pack 300 are located between adjacent exhaust plates 100, so that when the battery cells 301 are damaged, the exhaust plates 100 can collect the leakage flowing out of the battery cells 301, thereby preventing the leakage from contacting the surrounding battery cells 301. In addition, the provision of multiple exhaust plates 100 effectively ensures that the leakage of each battery cell 301 can be collected, thereby improving the leakage collection effect of the leakage collection device 200, and further effectively preventing the battery cells 301 from being immersed in the leakage, thereby improving the performance of the battery pack 300. In addition, when the cooling air passes through two adjacent exhaust plates 100, the upper and lower sides of the battery cells 301 can be cooled at the same time, thereby helping to further accelerate the cooling of the battery cells 301.

[0080] According to some embodiments of the utility model, a plurality of exhaust plates 100 are stacked along a third direction (up and down direction), two adjacent exhaust plates 100 are positioned by a first positioning structure (not shown in the figure), and the leakage collection bottom plate 201 and the lowest one of the multiple exhaust plates 100 are positioned by a second positioning structure (not shown in the figure). For example, there are multiple first positioning structures, and in this application, there are four first positioning structures on each exhaust plate 100, and the four first positioning structures are respectively located at the four corners between two adjacent exhaust plates 100, and the four first positioning structures are located on the outer peripheral side of the battery cell 301 between two adjacent exhaust plates 100. There are also multiple second positioning structures, and in this application, there are four second positioning structures, and the four second positioning structures are respectively located at the four corners between the leakage collection bottom plate 201 and the lowest one of the multiple exhaust plates 100, and the four second positioning structures are located on the outer peripheral side of the battery cell 301 between the leakage collection bottom plate 201 and the lowest one of the multiple exhaust plates 100.

[0081] With such arrangement, the first positioning structure allows the two adjacent exhaust plates 100 to be quickly positioned during the installation of the two adjacent exhaust plates 100, thereby improving the assembly efficiency of the liquid leakage collection device 200. In addition, the second positioning structure allows the liquid leakage collection bottom plate 201 and the bottom one of the multiple exhaust plates 100 to be quickly positioned during the assembly of the liquid leakage collection bottom plate 201, thereby further improving the assembly efficiency of the liquid leakage collection device 200. However, it is not limited thereto. Of course, the first positioning structure may also extend in the left-right direction, and the first positioning structure may be located between the two first side plates 18 corresponding to the two adjacent exhaust plates 100 in the up-down direction. The second positioning structure extends in the left-right direction, and the second positioning structure may be located between the two ends of the liquid leakage collection bottom plate 201 in the front-back direction and the first side plates 18 corresponding to the bottom one of the multiple exhaust plates 100.

[0082] Optionally, the first positioning structure may include a first positioning rod (not shown) and a first positioning groove (not shown), the first positioning rod extending in the up-down direction, the lower end of the first positioning rod connected to the upper side of the lower exhaust plate 100 of the two adjacent exhaust plates 100, the upper end of the first positioning rod is pointed, the first positioning groove is formed on the lower side of the upper exhaust plate 100 of the two adjacent exhaust plates 100, and the inner wall of the first positioning groove matches the outer peripheral surface of the upper end of the first positioning rod. Such a configuration facilitates the positioning and fixing of the two adjacent exhaust plates 100 during assembly, improves the assembly accuracy of the two adjacent exhaust plates 100, and is conducive to improving the assembly accuracy of multiple exhaust plates 100, thereby improving the assembly accuracy and assembly efficiency of the leakage collection device 200. In addition, the structure of the first positioning structure is simple, which helps to improve the production efficiency of the first positioning structure.

[0083] Optionally, the second positioning structure includes a second positioning rod (not shown) and a second positioning groove (not shown), the second positioning rod extends in the up-down direction, the lower end of the second positioning rod is connected to the upper side of the leakage collection bottom plate 201, the upper end of the second positioning rod is pointed, the second positioning groove is formed on the lower side of the lowest one of the multiple exhaust plates 100, and the outer peripheral surface of the upper end of the second positioning rod cooperates with the inner wall of the second positioning groove. Such a configuration facilitates the positioning and fixing of the leakage collection bottom plate 201 and the lowest one of the multiple exhaust plates 100 during assembly, improves the assembly accuracy between the leakage collection bottom plate 201 and the lowest one of the multiple exhaust plates 100, and is conducive to improving the assembly accuracy and assembly efficiency of the leakage collection device 200. In addition, the second positioning structure is simple in structure, which helps to improve the production efficiency of the second positioning structure.

[0084] Furthermore, the leakage collecting bottom plate 201 may be a tray, the battery cell 301 is placed in the middle of the leakage collecting bottom plate 201, and the surrounding side walls of the leakage collecting bottom plate 201 are arranged around the outer periphery of the battery cell 301. Thus, the stability of the installation of the battery cell 301 and the leakage collecting bottom plate 201 is improved, thereby improving the use stability of the leakage collecting bottom plate 201. In addition, the protective effect of the leakage collecting bottom plate 201 on the battery cell 301 is improved, thereby preventing the battery cell 301 from being damaged, which helps to extend the service life of the battery cell 301.

[0085] According to the battery pack 300 of the third embodiment of the utility model, refer to Figure 2 and Figure 4 , including multiple battery cells 301 and a leakage collection device 200.

[0086] Specifically, multiple battery cells 301 are arranged in a third direction (vertical direction), the leakage collection device 200 is a leakage collection device 200 according to the second embodiment of the utility model, the exhaust plate 100 of the leakage collection device 200 is arranged between two adjacent battery cells 301, and the leakage collection bottom plate 201 of the leakage collection device 200 is located at the bottom of the lowest battery cell 301. For example, Figure 2 and Figure 4 In the example, the arrangement of the multiple battery cells 301 is vertical stacking, and the upper side of the topmost battery cell 301 among the multiple battery cells 301 is also provided with an exhaust plate 100, and the multiple exhaust plates 100 and the multiple battery cells 301 are arranged alternately in the up-down direction. Thus, the exhaust plate 100 can collect the leakage of the battery cells 301 of each layer, thereby further preventing the leakage of the damaged battery cell 301 from damaging the surrounding battery cells 301, thereby helping to extend the service life of the battery pack 300, and also improving the reliability of the leakage collection device 200.

[0087] Optionally, refer to Figure 4 and Figure 5 The battery pack 300 further includes a shell 302 and a cover plate 303. The multiple battery cells 301 are assembled with the leakage collection device 200 and placed in the shell 302. The shell 302 is open upward. An air inlet 3021 is formed on the front side wall of the shell 302. The air inlet 3021 is adjacent to the air inlet side 111 of the exhaust plate 100. An air outlet 3022 is formed on the rear side wall of the shell 302. The air outlet 3022 is adjacent to the air outlet side 112 of the exhaust plate 100. The cover plate 303 covers the shell 302. For example, in Figure 4 and Figure 5 In the example, the air inlet 3021 is formed at the left end of the front side wall of the shell 302, and the air outlet 3022 is formed at the right end of the rear side wall of the shell 302. In this way, the shell 302 can protect the battery cell 301 and the leakage collection device 200, thereby avoiding damage to the battery cell 301 and the leakage collection device 200, which helps to extend the service life of the battery pack 300. In addition, the air inlet 3021 and the air outlet 3022 improve the smoothness of the cooling air flowing in the shell 302, thereby helping to improve the cooling effect of the cooling air on the battery cell 301, and thus helping the battery cell 301 to be used normally for a long time.

[0088] The electric device (not shown) according to the embodiment of the fourth aspect of the utility model comprises the battery pack 300 according to the embodiment of the third aspect of the utility model.

[0089] According to the electric device of the utility model, the use performance of the electric device is improved and the service life of the electric device is extended by using the above-mentioned battery pack 300. It should be noted that the electric device can be a vehicle, an aircraft, a ship, a computer or an energy storage cabinet.

[0090] Other structures and operations of the battery pack 300 and the electrical device according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail here.

[0091] In the description of the present invention, it should be understood that the terms "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "top", "bottom", "inside", "outside", "circumferential" and the like indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0092] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0093] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An exhaust plate, characterized in that: include: The plate body is provided with an exhaust structure, the two sides of the exhaust structure are respectively an air inlet side and an air outlet side, and at least one liquid leakage hole is formed on the plate body, and the liquid leakage hole is located on the air outlet side.

2. The exhaust plate according to claim 1, characterized in that: At least one exhaust slot is formed on the exhaust structure, and the exhaust slot extends along a first direction. A side of the exhaust slot adjacent to the air outlet side is connected to the liquid leakage hole, and the first direction is from the air inlet side toward the air outlet side.

3. The exhaust plate according to claim 2, characterized in that: The exhaust structure comprises: At least one exhaust group, the exhaust group includes a first exhaust plate and a second exhaust plate, the first exhaust plate and the second exhaust plate both extend along a first direction, the first exhaust plate and the second exhaust plate are arranged along a second direction, the adjacent sides of the first exhaust plate and the second exhaust plate are connected to each other, the sides of the first exhaust plate and the second exhaust plate facing away from each other extend obliquely along a third direction toward a side away from the leakage hole, the first exhaust plate and the second exhaust plate jointly define the exhaust slot, the leakage hole is opposite to the exhaust slot, and the first direction, the second direction and the third direction are orthogonal.

4. The exhaust plate according to claim 3, characterized in that: A first supporting rib is connected between the first exhaust plate and the second exhaust plate on one side adjacent to each other along the second direction, and a free end of the first supporting rib extends along the third direction toward a side away from the liquid leakage hole.

5. The exhaust plate according to claim 4, characterized in that: The side of the first air exhaust plate and the second air exhaust plate that are opposite to each other along the second direction and the surface of the side of the first supporting rib that is away from the liquid leakage hole along the third direction are located in the same plane.

6. The exhaust plate according to claim 4, characterized in that: A first liquid blocking rib is connected between one end of the first exhaust plate away from the liquid leakage hole along the first direction and the first supporting rib; and / or A second liquid blocking rib is connected between one end of the second air exhaust plate along the first direction away from the liquid leakage hole and the first supporting rib.

7. The exhaust plate according to claim 4, characterized in that: There are multiple exhaust groups, and the multiple exhaust groups are connected in sequence along the second direction.

8. The exhaust plate according to claim 7, characterized in that: A second supporting rib is connected between two adjacent exhaust groups, and a free end of the second supporting rib extends along the third direction toward the side where the leakage hole is located.

9. The exhaust plate according to claim 8, characterized in that: The first supporting rib and the second supporting rib have the same height along the third direction; or The free end face of the second support rib is in the same plane as the side face of the first support rib along the third direction toward the leakage hole, and the free end face of the first support rib is in the same plane as the side face of the second support rib along the third direction away from the leakage hole.

10. The exhaust plate according to claim 3, characterized in that: One end of the first exhaust plate and the second exhaust plate adjacent to the liquid leakage hole along the first direction is provided with a guide plate extending obliquely toward the side where the liquid leakage hole is located.

11. The exhaust plate according to any one of claims 1 to 10, characterized in that: A liquid leakage collection groove is formed on the plate body, the liquid leakage collection groove is located on the air outlet side, and the liquid leakage hole is formed on the inner wall of the liquid leakage collection groove.

12. The exhaust plate according to claim 11, characterized in that: The plate body comprises: Two first side panels, both of which extend along a first direction, and are respectively connected to two sides of the exhaust structure along a second direction, the first direction is perpendicular to the second direction, and the first direction is a direction from the air inlet side toward the air outlet side; The second side plate is connected between the two first side plates, the second side plate and the exhaust structure are spaced apart from each other to define the leakage collection groove, and the leakage hole is formed on the bottom wall of the leakage collection groove.

13. A leakage collection device, characterized in that: Comprising at least one exhaust plate according to any one of claims 1-12.

14. The leakage collection device according to claim 13, characterized in that: Further including: The leaked liquid collecting bottom plate is arranged below the exhaust plate, and the leaked liquid on the exhaust plate is suitable for flowing to the leaked liquid collecting bottom plate through the leaking hole.

15. The leakage collection device according to claim 14, characterized in that: The top of the leakage liquid collection bottom plate is open, and at least one supporting structure is arranged inside the leakage liquid collection bottom plate.

16. The leakage collection device according to claim 14, characterized in that: The leakage collecting bottom plate is provided with a leakage detecting member.

17. The leakage collection device according to any one of claims 13 to 16, characterized in that: There are multiple exhaust plates, and the multiple exhaust plates are arranged along the third direction.

18. The leakage collection device according to claim 17, characterized in that: A plurality of the exhaust plates are stacked along the third direction, and two adjacent exhaust plates are positioned by a first positioning structure; The leakage collecting bottom plate and the lowest one of the plurality of exhaust plates are positioned by a second positioning structure.

19. A battery pack, characterized in that: include: A plurality of battery cells, wherein the plurality of battery cells are arranged along a third direction; A leakage collection device, wherein the leakage collection device is a leakage collection device according to any one of claims 13-18, wherein the exhaust plate of the leakage collection device is arranged between two adjacent battery cells, and the leakage collection bottom plate of the leakage collection device is located at the bottom of the lowest battery cell.

20. An electrical device, characterized in that: Comprising a battery pack according to claim 19.

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