Battery cell packaging foam plate

Abstract

The embodiment of the utility model provides a battery cell packaging foam plate, and relates to the technical field of battery cell packaging. A plurality of first accommodating grooves are formed in the battery cell packaging foam plate, a positive electrode groove, an anti-explosion valve groove and a negative electrode groove are formed in the bottom wall of each first accommodating groove, and the positive electrode grooves, the anti-explosion valve grooves and the negative electrode grooves are sequentially arranged at intervals in the length direction of the first accommodating grooves; a first transverse flow channel, a second transverse flow channel and a third transverse flow channel are further formed in the bottom wall of each first containing groove and are sequentially arranged at intervals in the length direction of the first containing groove; the first transverse flow channel, the second transverse flow channel and the third transverse flow channel all extend in the width direction of the first containing groove. The first transverse flow channel is communicated with the positive electrode groove, the second transverse flow channel is communicated with the anti-explosion valve groove, and the third transverse flow channel is communicated with the negative electrode groove. The device can prevent water drops from corroding a battery cell pole, and the storage safety and the use effect are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery core packaging, in particular to a battery core packaging foam board. Background Art

[0002] With the continuous development of the new energy industry, power battery technology is also constantly improving. During production and manufacturing, battery cells need to be installed, stored, and transported. For the storage of battery cells, they are currently usually packaged with packaging foam and stored in warehouses.

[0003] However, in hot environments or during the rainy season, condensation is likely to occur between the battery cells in the warehouse. The battery cell poles have a metal structure, and the condensed water droplets will corrode the battery cell poles, leading to subsequent problems such as poor use of the battery cells. Utility Model Content

[0004] The purpose of the utility model is to provide a foam board for packaging battery cells, which can prevent condensed water droplets from corroding the battery cell poles, thereby improving the storage safety and subsequent use effect of the battery cells.

[0005] The embodiment of the present utility model is achieved as follows:

[0006] In a first aspect, the present invention provides a foam sheet for packaging a battery cell, the foam sheet for packaging the battery cell being provided with a plurality of first accommodating grooves, the plurality of first accommodating grooves being used to mount the top of the battery cell, the bottom wall of each of the first accommodating grooves being provided with a positive electrode groove, an explosion-proof valve groove, and a negative electrode groove, the positive electrode groove, the explosion-proof valve groove, and the negative electrode groove being sequentially spaced apart along the length direction of the first accommodating groove;

[0007] The bottom wall of each first receiving groove is further provided with a first transverse flow channel, a second transverse flow channel, and a third transverse flow channel, wherein the first transverse flow channel, the second transverse flow channel, and the third transverse flow channel are sequentially spaced apart along the length direction of the first receiving groove, and the first transverse flow channel, the second transverse flow channel, and the third transverse flow channel are all extended along the width direction of the first receiving groove;

[0008] Wherein, the first transverse flow channel is communicated with the positive electrode groove, the second transverse flow channel is communicated with the explosion-proof valve groove, and the third transverse flow channel is communicated with the negative electrode groove.

[0009] In an optional embodiment, the side walls of the first accommodating groove are provided with a first drainage channel, a second drainage channel and a third drainage channel, and the first drainage channel, the second drainage channel and the third drainage channel are arranged in sequence along the length direction of the first accommodating groove; the first drainage channel is connected to the first transverse flow channel, the second drainage channel is connected to the second transverse flow channel, and the third drainage channel is connected to the third transverse flow channel.

[0010] In an optional embodiment, the number of the first transverse flow channel and the number of the first drainage channel are both two, the two first transverse flow channels are spaced apart along the width direction of the first accommodating groove and are both connected to the positive electrode groove; the two first drainage channels are spaced apart along the width direction of the first accommodating groove and are respectively connected to the two first transverse flow channels; and / or,

[0011] The number of the second transverse flow channels and the number of the second drainage channels are both two, the two second transverse flow channels are spaced apart along the width direction of the first accommodating groove, and both are communicated with the explosion-proof valve groove; the two second drainage channels are spaced apart along the width direction of the first accommodating groove, and are respectively communicated with the two second transverse flow channels; and / or,

[0012] The number of the third transverse flow channels and the third drainage channels is two, the two third transverse flow channels are arranged at intervals along the width direction of the first accommodating groove, and are both connected to the negative electrode groove; the two third drainage channels are arranged at intervals along the width direction of the first accommodating groove, and are respectively connected to the two third transverse flow channels.

[0013] In an optional embodiment, the depths of the first transverse flow channel, the second transverse flow channel, the third transverse flow channel, the first drainage channel, the second drainage channel, and the third drainage channel are all 1 mm to 10 mm.

[0014] In an optional embodiment, the first transverse flow channel, the second transverse flow channel, the third transverse flow channel, the first drainage channel, the second drainage channel, and the third drainage channel are all provided with an insulating coating.

[0015] In an optional embodiment, the bottom wall of each first accommodating groove is also provided with a first vertical flow channel, a second vertical flow channel, a third vertical flow channel and a fourth vertical flow channel, and the first vertical flow channel, the second vertical flow channel, the third vertical flow channel and the fourth vertical flow channel are all arranged in sequence along the length direction of the first accommodating groove; and the first vertical flow channel, the positive electrode groove, the second vertical flow channel, the explosion-proof valve groove, the third vertical flow channel, the negative electrode groove and the fourth vertical flow channel are connected in sequence.

[0016] In an optional embodiment, the side walls of the first accommodating groove are provided with a fourth drainage channel and a fifth drainage channel, the fourth drainage channel is located on the side of the positive electrode groove away from the explosion-proof valve groove, and is connected to the first vertical flow channel; the fifth drainage channel is located on the side of the negative electrode groove away from the explosion-proof valve groove, and is connected to the fourth vertical flow channel.

[0017] In an optional embodiment, the depths of the first vertical flow channel, the second vertical flow channel, the third vertical flow channel, the fourth vertical flow channel, the fourth drainage channel, and the fifth drainage channel are all 1 mm to 10 mm.

[0018] In an optional embodiment, an insulating coating is provided on the first vertical flow channel, the second vertical flow channel, the third vertical flow channel, the fourth vertical flow channel, the fourth drainage channel, and the fifth drainage channel.

[0019] In an optional embodiment, the battery cell packaging foam board is further provided with a plurality of second accommodating grooves, the plurality of second accommodating grooves and the plurality of first accommodating grooves are respectively located on two opposite sides of the battery cell packaging foam board, and the plurality of second accommodating grooves are used to install the bottom of the battery cell.

[0020] The beneficial effects of the embodiments of the present utility model include:

[0021] The cell packaging foam board is provided with a plurality of first accommodating grooves, and the plurality of first accommodating grooves are used to install the top of the cell. The bottom wall of each first accommodating groove is provided with a positive electrode groove, an explosion-proof valve groove and a negative electrode groove, and the positive electrode groove, the explosion-proof valve groove and the negative electrode groove are arranged in sequence along the length direction of the first accommodating groove; the bottom wall of each first accommodating groove is also provided with a first transverse flow channel, a second transverse flow channel and a third transverse flow channel, and the first transverse flow channel, the second transverse flow channel and the third transverse flow channel are arranged in sequence along the length direction of the first accommodating groove, and the first transverse flow channel, the second transverse flow channel and the third transverse flow channel are all extended along the width direction of the first accommodating groove; wherein, the first transverse flow channel is connected with the positive electrode groove, the second transverse flow channel is connected with the explosion-proof valve groove, and the third transverse flow channel is connected with the negative electrode groove.

[0022] When packaging the battery cells, first place the multiple battery cells in correspondence with the arrangement of the multiple first accommodating grooves, and then install the side of the battery cell packaging foam board with the first accommodating groove on the top of the multiple battery cells, so that the multiple first accommodating grooves are installed one-to-one with the multiple battery cells, and the positive electrode column, explosion-proof valve and negative electrode column on the top of each battery cell are respectively arranged in the positive electrode groove, explosion-proof valve groove and negative electrode groove, so that the installation is stable. Since the bottom of the first accommodating groove is provided with a first transverse flow channel, a second transverse flow channel and a third transverse flow channel which are respectively connected to the positive electrode groove, the explosion-proof valve groove and the negative electrode groove, the air in the space where the positive electrode column of the battery cell is located can flow through the first transverse flow channel, the air in the space where the explosion-proof valve is located can flow through the second transverse flow channel, and the air in the space where the negative electrode column is located can flow through the third transverse flow channel; in this way, the hot and humid air formed in a hot environment or the rainy season can flow out through the transverse flow channels, which has a heat dissipation effect, thereby avoiding condensation of water vapor in the top space of the battery cell, preventing the water droplets formed by condensation from corroding the battery cell poles, and improving the storage safety and subsequent use effect of the battery cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 A schematic structural diagram of a foam board for cell packaging provided by an embodiment of the present invention from a first perspective;

[0025] Figure 2 A schematic structural diagram of a foam plate for cell packaging according to an embodiment of the present invention from a second perspective;

[0026] Figure 3 for Figure 1 A partial enlarged view of point A in the middle;

[0027] Figure 4 A schematic structural diagram of a first accommodating tank provided in an embodiment of the present utility model;

[0028] Figure 5 This is a schematic structural diagram of the foam board for cell packaging from a third perspective provided in an embodiment of the utility model.

[0029] Icon: 100-cell packaging foam board; 10-first accommodating groove; 21-positive electrode groove; 22-explosion-proof valve groove; 23-negative electrode groove; 31-first horizontal flow channel; 32-second horizontal flow channel; 33-third horizontal flow channel; 41-first drainage channel; 42-second drainage channel; 43-third drainage channel; 51-first vertical flow channel; 52-second vertical flow channel; 53-third vertical flow channel; 54-fourth vertical flow channel; 60-second accommodating groove. DETAILED DESCRIPTION

[0030] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0032] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0033] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is typically placed when in use. These terms are intended solely to facilitate the description of this utility model and to simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0034] Furthermore, terms such as "horizontal" and "vertical" do not necessarily mean that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0035] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0036] As described in the background, during manufacturing, battery cells need to be installed, stored, and transported. Currently, these cells are typically packaged in foam and stored in warehouses. However, in hot environments or during the rainy season, condensation can easily form between the cells in the warehouse. Since the battery cells have metal poles, the condensed water droplets can corrode the poles, leading to problems with subsequent battery use.

[0037] Based on this, please refer to Figure 1-Figure 5 The present invention provides a foam sheet 100 for cell packaging that effectively addresses the aforementioned technical issues. Specifically, it prevents condensed water from corroding the cell terminals, improving the storage safety and subsequent use of the cells. The cell packaging foam sheet 100 is described in detail below.

[0038] Please refer to Figure 1 and Figure 2 , Figure 1 This is a structural diagram of the cell packaging foam board 100 provided in this embodiment from a first perspective. Figure 2 This is a structural diagram of the second perspective of the battery cell packaging foam board 100 provided in this embodiment, combined with Figure 1 and Figure 2The battery cell packaging foam board 100 is provided with a plurality of first accommodating grooves 10, and the plurality of first accommodating grooves 10 are used to install the top of the battery cell. The bottom wall of each first accommodating groove 10 is provided with a positive electrode groove 21, an explosion-proof valve groove 22 and a negative electrode groove 23, and the positive electrode groove 21, the explosion-proof valve groove 22 and the negative electrode groove 23 are arranged in sequence along the length direction of the first accommodating groove 10; the bottom wall of each first accommodating groove 10 is also provided with a first transverse flow channel 31, a second transverse flow channel 32 and a third transverse flow channel 33, and the first transverse flow channel 31, the second transverse flow channel 32 and the third transverse flow channel 33 are arranged in sequence along the length direction of the first accommodating groove 10, and the first transverse flow channel 31, the second transverse flow channel 32 and the third transverse flow channel 33 are all extended along the width direction of the first accommodating groove 10; wherein, the first transverse flow channel 31 is connected to the positive electrode groove 21, the second transverse flow channel 32 is connected to the explosion-proof valve groove 22, and the third transverse flow channel 33 is connected to the negative electrode groove 23.

[0039] When packaging the battery cells, first place the multiple battery cells in correspondence with the arrangement of the multiple first accommodating grooves 10, and then install the side of the battery cell packaging foam board 100 with the first accommodating groove 10 on the top of the multiple battery cells, so that the multiple first accommodating grooves 10 are installed one-to-one with the multiple battery cells, and the positive electrode column, explosion-proof valve and negative electrode column on the top of each battery cell are respectively arranged in the positive electrode groove 21, the explosion-proof valve groove 22 and the negative electrode groove 23, so that the installation is stable. Since the bottom of the first accommodating tank 10 is provided with a first transverse flow channel 31, a second transverse flow channel 32 and a third transverse flow channel 33 which are respectively connected to the positive electrode groove 21, the explosion-proof valve groove 22 and the negative electrode groove 23, the air in the space where the positive electrode column of the battery cell is located can flow through the first transverse flow channel 31, the air in the space where the explosion-proof valve is located can flow through the second transverse flow channel 32, and the air in the space where the negative electrode column is located can flow through the third transverse flow channel 33; in this way, the hot and humid air formed in a hot environment or the rainy season can flow out through the transverse flow channels, which has the effect of heat dissipation, thereby avoiding the condensation of water vapor in the top space of the battery cell, preventing the water droplets formed by condensation from corroding the battery cell poles, and improving the storage safety and subsequent use effect of the battery cell.

[0040] It should be noted that the length direction of the first receiving groove 10 mentioned above is Figure 1-Figure 5 In the X direction shown in FIG, the width direction of the first receiving groove 10 is Figure 1-Figure 5 The Y direction is shown in FIG.

[0041] For further information, please refer to Figure 3 and Figure 4 , Figure 3 for Figure 1 A partial enlarged view of point A in the middle. Figure 4 This is a schematic diagram of the structure of the first receiving tank 10 provided in this embodiment, combined with Figure 3 and Figure 4 The side walls of the first accommodating groove 10 are each provided with a first drainage channel 41, a second drainage channel 42 and a third drainage channel 43, which are arranged in sequence along the length direction of the first accommodating groove 10; the first drainage channel 41 is connected to the first transverse flow channel 31, the second drainage channel 42 is connected to the second transverse flow channel 32, and the third drainage channel 43 is connected to the third transverse flow channel 33.

[0042] By setting the first drainage channel 41, the second drainage channel 42 and the third drainage channel 43, the air in the first transverse flow channel 31, the second transverse flow channel 32 and the third transverse flow channel 33 can be further discharged, increasing the air circulation path, thereby further improving the heat dissipation effect and avoiding condensation of water vapor.

[0043] It should be noted that, in this embodiment, the number of the first transverse flow channels 31 and the first drainage channels 41 are both two, and the two first transverse flow channels 31 are arranged at intervals along the width direction of the first accommodating tank 10 and are both connected to the positive electrode groove 21; the two first drainage channels 41 are arranged at intervals along the width direction of the first accommodating tank 10 and are respectively connected to the two first transverse flow channels 31; the number of the second transverse flow channels 32 and the second drainage channels 42 are both two, and the two second transverse flow channels 32 are arranged at intervals along the width direction of the first accommodating tank 10 and are both connected to the explosion-proof valve groove 22; the two second drainage channels 42 are arranged at intervals along the width direction of the first accommodating tank 10 and are respectively connected to the two second transverse flow channels 32; the number of the third transverse flow channels 33 and the third drainage channels 43 are both two, and the two third transverse flow channels 33 are arranged at intervals along the width direction of the first accommodating tank 10 and are both connected to the negative electrode groove 23; the two third drainage channels 43 are arranged at intervals along the width direction of the first accommodating tank 10 and are respectively connected to the two third transverse flow channels 33.

[0044] Through the above arrangement, the air flow rate in the positive electrode groove 21, the explosion-proof valve groove 22 and the negative electrode groove 23 can be increased, thereby further improving the heat dissipation effect.

[0045] Of course, in other embodiments, according to actual needs, only two first transverse flow channels 31 and two first drainage channels 41 are correspondingly set at the positive electrode groove 21, or only two second transverse flow channels 32 and two second drainage channels 42 are correspondingly set at the explosion-proof valve groove 22, or only two third transverse flow channels 33 and two third drainage channels 43 are correspondingly set at the negative electrode groove 23. In other words, when the positive electrode groove 21, the explosion-proof valve groove 22 and the negative electrode groove 23 are combined in pairs, two transverse flow channels and drainage channels are correspondingly set.

[0046] Of course, in some other embodiments, the number of the first transverse flow channel 31, the second transverse flow channel 32, the third transverse flow channel 33, the first drainage channel 41, the second drainage channel 42 and the third drainage channel 43 is not limited to two, but can also be three, four or five, etc.

[0047] Please continue to combine Figure 3 and Figure 4 In order to further improve the air circulation effect and enhance the heat dissipation efficiency, in this embodiment, the bottom wall of each first accommodating groove 10 is further provided with a first vertical flow channel 51, a second vertical flow channel 52, a third vertical flow channel 53 and a fourth vertical flow channel 54. The first vertical flow channel 51, the second vertical flow channel 52, the third vertical flow channel 53 and the fourth vertical flow channel 54 are all arranged in sequence along the length direction of the first accommodating groove 10; and the first vertical flow channel 51, the positive electrode groove 21, the second vertical flow channel 52, the explosion-proof valve groove 22, the third vertical flow channel 53, the negative electrode groove 23 and the fourth vertical flow channel 54 are connected in sequence.

[0048] Similarly, in order to better drain the air from the first vertical flow channel 51 and the fourth vertical flow channel 54, the side walls of the first accommodating groove 10 can also be provided with a fourth drainage channel and a fifth drainage channel (not shown in the figure). The fourth drainage channel is located on the side of the positive electrode groove 21 away from the explosion-proof valve groove 22 and is connected to the first vertical flow channel 51; the fifth drainage channel is located on the side of the negative electrode groove 23 away from the explosion-proof valve groove 22 and is connected to the fourth vertical flow channel 54.

[0049] Optionally, the depths of the first transverse flow channel 31, the second transverse flow channel 32, the third transverse flow channel 33, the first drainage channel 41, the second drainage channel 42, and the third drainage channel 43 are all 1mm to 10mm; and the depths of the first vertical flow channel 51, the second vertical flow channel 52, the third vertical flow channel 53, the fourth vertical flow channel 54, the fourth drainage channel, and the fifth drainage channel are all 1mm to 10mm; for example, the depths mentioned above can be 1mm, 3mm, 5mm, 7mm, or 9mm, etc. Of course, in some other embodiments, the depths of the first transverse flow channel 31, the second transverse flow channel 32, the third transverse flow channel 33, the first drainage channel 41, the second drainage channel 42, the third drainage channel 43, the first vertical flow channel 51, the second vertical flow channel 52, the third vertical flow channel 53, the fourth vertical flow channel 54, the fourth drainage channel, and the fifth drainage channel can also be other values, which need to be determined according to the specific design requirements of the battery cell packaging foam board 100.

[0050] Furthermore, to reduce the problem of condensation on the surface of the battery cell or packaging foam caused by temperature differences, the first transverse flow channel 31, the second transverse flow channel 32, the third transverse flow channel 33, the first drainage channel 41, the second drainage channel 42, and the third drainage channel 43 are all provided with an insulating coating. Similarly, the first vertical flow channel 51, the second vertical flow channel 52, the third vertical flow channel 53, the fourth vertical flow channel 54, the fourth drainage channel, and the fifth drainage channel are all provided with an insulating coating. This insulating coating can be in the form of foam glue, waterproof glue, or hydrogel, and can reduce the temperature difference between the battery cell and the packaging foam, thereby preventing water vapor or liquid from forming on the surface of the battery cell or packaging foam and leaking to the positive and negative poles of the battery cell, further preventing corrosion of the poles and ensuring the safe storage of the battery cells.

[0051] It should be noted that in this embodiment, the material of the insulating coating is polyurethane, which has the characteristics of heat insulation, sound insulation, shock resistance, oil resistance, wear resistance, low temperature resistance, aging resistance, high hardness and elasticity. Of course, in other embodiments, the material of the insulating coating can also be other materials such as polyethylene.

[0052] When actually packaging the battery cells, in addition to packaging the top of the battery cells, the bottom of the battery cells also needs to be packaged. In addition, the battery cells can be stacked and packaged using packaging foam. That is, after the top of one group of battery cells is packaged with packaging foam, another group of battery cells is stacked on top of the previous group of battery cells, and the bottom of the other group of battery cells is continued to be packaged with packaging foam.

[0053] Therefore, in this embodiment, in order to improve the adaptability of the battery cell packaging foam board 100, please refer to Figure 5 , Figure 5 A schematic structural diagram of the cell packaging foam board 100 provided in this embodiment from a third perspective, combined with Figure 2 and Figure 5 The cell packaging foam board 100 is also provided with a plurality of second accommodating grooves 60. The plurality of second accommodating grooves 60 and the plurality of first accommodating grooves 10 are respectively located on opposite sides of the cell packaging foam board 100, and the plurality of second accommodating grooves 60 are used to install the bottom of the cell.

[0054] It is easy to understand that for the same battery cell packaging foam board 100, it can be understood that the first accommodating groove 10 located on the back side is used to install the top of the first group of battery cells, and the second accommodating groove 60 located on the back side is used to install the bottom of the second group of battery cells. In this way, by producing the same battery cell packaging foam board 100, stacking packaging of multiple groups of multi-layer battery cells can be achieved, thereby saving costs and improving packaging efficiency.

[0055] Furthermore, in this embodiment, the plurality of second receiving grooves 60 are arranged in a one-to-one correspondence with the plurality of first receiving grooves 10. In other words, the arrangement direction of the plurality of first receiving grooves 10 is the same as the arrangement direction of the plurality of second receiving grooves 60. It can also be understood that the length extension direction and the width extension direction of the plurality of first receiving grooves 10 are consistent, so that the arrangement of each layer of battery cells after packaging is the same.

[0056] In summary, the embodiment of the present invention provides a cell packaging foam board 100, which is provided with a plurality of first accommodating grooves 10, and the plurality of first accommodating grooves 10 are used to install the top of the cell, and the bottom wall of each first accommodating groove 10 is provided with a positive electrode groove 21, an explosion-proof valve groove 22 and a negative electrode groove 23, and the positive electrode groove 21, the explosion-proof valve groove 22 and the negative electrode groove 23 are arranged in sequence along the length direction of the first accommodating groove 10; the bottom wall of each first accommodating groove 10 is also provided with a first transverse flow The first transverse flow channel 31, the second transverse flow channel 32 and the third transverse flow channel 33 are arranged in sequence along the length direction of the first accommodating tank 10, and the first transverse flow channel 31, the second transverse flow channel 32 and the third transverse flow channel 33 are all extended along the width direction of the first accommodating tank 10; wherein, the first transverse flow channel 31 is connected to the positive electrode groove 21, the second transverse flow channel 32 is connected to the explosion-proof valve groove 22, and the third transverse flow channel 33 is connected to the negative electrode groove 23.

[0057] That is, when packaging the battery cells, the multiple battery cells are first placed in correspondence with the arrangement of the multiple first accommodating grooves 10, and then the side of the battery cell packaging foam sheet 100 having the first accommodating grooves 10 is installed on top of the multiple battery cells, so that the multiple first accommodating grooves 10 are installed one-to-one with the multiple battery cells, and the positive electrode column, explosion-proof valve, and negative electrode column on the top of each battery cell are respectively arranged in the positive electrode groove 21, the explosion-proof valve groove 22, and the negative electrode groove 23, so that the installation is stable. Because the bottom of the first accommodating groove 10 is provided with a first transverse flow channel 31, a second transverse flow channel 32, and a third transverse flow channel 33 that are respectively connected to the positive electrode groove 21, the explosion-proof valve groove 22, and the negative electrode groove 23, air in the space where the positive electrode column of the battery cell is located can flow through the first transverse flow channel 31, air in the space where the explosion-proof valve is located can flow through the second transverse flow channel 32, and air in the space where the negative electrode column is located can flow through the third transverse flow channel 33. Therefore, the hot and humid air formed in a hot environment or the rainy season can flow out through the horizontal flow channel, which has a heat dissipation effect, thereby avoiding the condensation of water vapor in the top space of the battery cell, preventing the condensed water droplets from corroding the battery cell poles, and improving the storage safety and subsequent use of the battery cell.

[0058] The above description is merely a specific embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A foam board for battery cell packaging, characterized in that: The cell packaging foam board (100) is provided with a plurality of first accommodating grooves (10), the plurality of first accommodating grooves (10) being used to install the top of the cell, the bottom wall of each first accommodating groove (10) being provided with a positive electrode groove (21), an explosion-proof valve groove (22) and a negative electrode groove (23), the positive electrode groove (21), the explosion-proof valve groove (22) and the negative electrode groove (23) being sequentially spaced apart along the length direction of the first accommodating groove (10); The bottom wall of each first accommodating groove (10) is further provided with a first transverse flow channel (31), a second transverse flow channel (32) and a third transverse flow channel (33); the first transverse flow channel (31), the second transverse flow channel (32) and the third transverse flow channel (33) are sequentially spaced along the length direction of the first accommodating groove (10); and the first transverse flow channel (31), the second transverse flow channel (32) and the third transverse flow channel (33) are all extended along the width direction of the first accommodating groove (10); The first transverse flow channel (31) is in communication with the positive electrode groove (21), the second transverse flow channel (32) is in communication with the explosion-proof valve groove (22), and the third transverse flow channel (33) is in communication with the negative electrode groove (23).

2. The battery core packaging foam board according to claim 1, characterized in that: The side walls of the first accommodating groove (10) are each provided with a first drainage channel (41), a second drainage channel (42) and a third drainage channel (43), and the first drainage channel (41), the second drainage channel (42) and the third drainage channel (43) are sequentially spaced along the length direction of the first accommodating groove (10); the first drainage channel (41) is connected to the first transverse flow channel (31), the second drainage channel (42) is connected to the second transverse flow channel (32), and the third drainage channel (43) is connected to the third transverse flow channel (33).

3. The battery cell packaging foam board according to claim 2, characterized in that: The number of the first transverse flow channel (31) and the number of the first drainage channel (41) are both two, the two first transverse flow channels (31) are spaced apart along the width direction of the first accommodating groove (10), and both are in communication with the positive electrode groove (21); the two first drainage channels (41) are spaced apart along the width direction of the first accommodating groove (10), and are respectively in communication with the two first transverse flow channels (31); and / or, The number of the second transverse flow channel (32) and the number of the second drainage channel (42) are both two, the two second transverse flow channels (32) are spaced apart along the width direction of the first accommodating groove (10), and are both communicated with the explosion-proof valve groove (22); the two second drainage channels (42) are spaced apart along the width direction of the first accommodating groove (10), and are respectively communicated with the two second transverse flow channels (32); and / or, The number of the third transverse flow channel (33) and the number of the third drainage channel (43) are both two, the two third transverse flow channels (33) are arranged at intervals along the width direction of the first accommodating groove (10), and are both connected to the negative electrode groove (23); the two third drainage channels (43) are arranged at intervals along the width direction of the first accommodating groove (10), and are respectively connected to the two third transverse flow channels (33).

4. The battery core packaging foam board according to claim 2, characterized in that: The depths of the first transverse flow channel (31), the second transverse flow channel (32), the third transverse flow channel (33), the first drainage channel (41), the second drainage channel (42) and the third drainage channel (43) are all 1 mm to 10 mm.

5. The battery cell packaging foam board according to claim 2, characterized in that: The first transverse flow channel (31), the second transverse flow channel (32), the third transverse flow channel (33), the first drainage channel (41), the second drainage channel (42) and the third drainage channel (43) are all provided with an insulating coating.

6. The battery cell packaging foam board according to claim 1, characterized in that: The bottom wall of each first accommodating groove (10) is also provided with a first vertical flow channel (51), a second vertical flow channel (52), a third vertical flow channel (53) and a fourth vertical flow channel (54); the first vertical flow channel (51), the second vertical flow channel (52), the third vertical flow channel (53) and the fourth vertical flow channel (54) are all arranged in sequence along the length direction of the first accommodating groove (10); and the first vertical flow channel (51), the positive electrode groove (21), the second vertical flow channel (52), the explosion-proof valve groove (22), the third vertical flow channel (53), the negative electrode groove (23) and the fourth vertical flow channel (54) are connected in sequence.

7. The battery cell packaging foam board according to claim 6, characterized in that: The side walls of the first accommodating groove (10) are each provided with a fourth drainage channel and a fifth drainage channel, the fourth drainage channel being located on a side of the positive electrode groove (21) away from the explosion-proof valve groove (22) and being communicated with the first vertical flow channel (51); the fifth drainage channel being located on a side of the negative electrode groove (23) away from the explosion-proof valve groove (22) and being communicated with the fourth vertical flow channel (54).

8. The battery cell packaging foam board according to claim 7, characterized in that: The depths of the first vertical flow channel (51), the second vertical flow channel (52), the third vertical flow channel (53), the fourth vertical flow channel (54), the fourth drainage channel, and the fifth drainage channel are all 1 mm to 10 mm.

9. The battery cell packaging foam board according to claim 7, characterized in that: The first vertical flow channel (51), the second vertical flow channel (52), the third vertical flow channel (53), the fourth vertical flow channel (54), the fourth drainage channel, and the fifth drainage channel are all provided with an insulating coating.

10. The battery cell packaging foam board according to claim 1, characterized in that: The battery cell packaging foam plate (100) is further provided with a plurality of second accommodating grooves (60), the plurality of second accommodating grooves (60) and the plurality of first accommodating grooves (10) are respectively located on two opposite sides of the battery cell packaging foam plate (100), and the plurality of second accommodating grooves (60) are used for installing the bottom of the battery cell.

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