Battery pack, glue filling method thereof and vehicle

Abstract

The invention relates to a battery pack, a glue filling method thereof and a vehicle. The battery pack comprises a battery pack shell, a battery module, a plugging structure and filling glue. A battery cavity is formed in the battery pack shell, the battery module is arranged in the battery cavity, and the battery module and at least part of the inner wall of the battery cavity are arranged in a spaced mode to form a filling space. One side of the plugging structure is connected to the outer wall of the battery module, the other side of the plugging structure is propped against the inner wall of the battery pack shell, and the filling space can be divided into a plurality of independent filling areas. And the filling glue is filled in the plurality of filling areas so as to connect the battery module to the inner wall of the battery pack shell. By arranging the plurality of independent filling areas, an operator can fill the plurality of independent filling areas with the filling glue one by one, and the filling space in the battery pack shell is prevented from being integrally filled with the filling glue, so that the problem of non-uniform filling is avoided, and the filling uniformity of the filling glue is improved.

Description

Technical Field

[0001] This disclosure relates to the field of battery pack technology, and more specifically, to a battery pack and its potting method, as well as a vehicle. Background Technology

[0002] Battery packs are commonly used in new energy vehicles. A new energy battery pack consists of a casing and battery modules. The battery pack casing, as the carrier of the battery modules, plays a key role in the safe operation and protection of the battery modules.

[0003] In related technologies, in order to improve the stability and strength of the battery module installed in the housing, the housing is often filled with glue as a whole, which can easily lead to uneven glue filling. Summary of the Invention

[0004] To overcome the problems existing in the related technologies, this disclosure provides a battery pack and its potting method, as well as a vehicle, to solve the technical problems existing in the related technologies.

[0005] According to a first aspect of the present disclosure, a battery pack is provided, comprising:

[0006] The battery pack casing has a battery cavity.

[0007] A battery module is disposed within the battery cavity and spaced apart from at least a portion of the inner wall of the battery cavity to form a filling space;

[0008] The sealing structure is connected to the outer wall of the battery module on one side and abuts against the inner wall of the battery pack housing on the other side, and can divide the filling space into multiple independent filling areas.

[0009] A filler adhesive is used to fill multiple filling areas to connect the battery module to the inner wall of the battery pack housing.

[0010] In some embodiments, at least two of the plurality of filled regions have different volumes.

[0011] In some embodiments, the filling regions of different volumes are filled with filling adhesives of different foaming rates, wherein the foaming rate of the filling adhesive in the filling region with a larger space is greater than the foaming rate of the filling adhesive in the filling region with a smaller space.

[0012] In some embodiments, the plurality of filling regions include at least one first filling region and at least one second filling region, wherein the volume of the first filling region is greater than the volume of the second filling region;

[0013] The sealing structure includes multiple side sealing ribs, one side of which is connected to the outer side wall of the battery module and the other side abuts against the inner side wall of the battery pack housing; the multiple side sealing ribs are arranged in pairs along the circumferential direction of the outer side wall of the battery module, so as to separate the space between the outer side wall of the battery module and the inner side wall of the battery pack housing into at least one first filling area and at least one second filling area.

[0014] In some embodiments, the plurality of filling regions further include a third filling region;

[0015] The sealing structure further includes an upper sealing rib, which is disposed on at least a portion of the upper periphery of the battery module, and the upper sealing rib protrudes from the upper surface of the battery module and abuts against the inner wall of the upper cover of the battery pack housing, so as to enclose the third filling area between the battery module and the upper cover.

[0016] In some embodiments, the upper sealing rib is connected to a plurality of the side sealing ribs.

[0017] In some embodiments, the volume of the third filling region is smaller than the volume of the second filling region;

[0018] The filler adhesive includes a first filler adhesive, a second filler adhesive, and a third filler adhesive. The first filler adhesive is disposed in the first filling area, the second filler adhesive is disposed in the second filling area, and the third filler adhesive is disposed in the third filling area.

[0019] Wherein, the first filler, the second filler, and the third filler are all foaming adhesives, and the foaming rate of the first filler is greater than that of the second filler, and the foaming rate of the second filler is greater than that of the third filler.

[0020] In some embodiments, the battery module is provided with the first filling area on both sides along the first direction, and the battery module is provided with the second filling area on both sides along the second direction; wherein the first direction and the second direction intersect.

[0021] In some embodiments, the sealing structure includes an elastic sealing strip that is adhered to the outer peripheral edge of the battery module.

[0022] According to a second aspect of the present disclosure, a battery pack potting method is provided, the battery pack potting method being applied to the battery pack, comprising:

[0023] The battery module is disposed within the housing body of the battery pack housing;

[0024] The sealing structure is connected to the outer wall of the battery module;

[0025] The filler adhesive is filled into the plurality of the filling areas;

[0026] The top cover of the battery pack housing is sealed at the opening of the housing body.

[0027] In some embodiments, the plurality of filling regions include at least one first filling region and at least one second filling region, wherein the volume of the first filling region is greater than the volume of the second filling region;

[0028] The step of filling the multiple filling areas with the filler adhesive includes:

[0029] Calculate the first amount of adhesive required for filling the first filling area based on the volume of the first filling area;

[0030] Calculate the amount of second adhesive required for filling the second filling area based on the volume of the second filling area;

[0031] First, fill the first filling area with the first amount of filler glue, let it stand for a first time, and then fill the second filling area with the second amount of filler glue.

[0032] According to a third aspect of the present disclosure, a vehicle is provided, the vehicle including the battery pack described above.

[0033] The technical solutions provided by the embodiments of this disclosure can include the following beneficial effects: First, the battery pack housing has a battery cavity for accommodating the battery module, which can effectively protect the battery module. Second, by setting a sealing structure, with one side of the sealing structure connected to the outer wall of the battery module and the other side abutting against the inner wall of the battery pack housing, the filling space can be divided into multiple independent filling areas. By setting these multiple independent filling areas, the operator can fill the filling adhesive one by one into these multiple independent filling areas, avoiding the overall filling of the filling space inside the battery pack housing, thereby avoiding the problem of uneven filling and improving the uniformity of filling adhesive.

[0034] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0035] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0036] Figure 1This is an exploded structural diagram of a battery pack according to one embodiment of the present disclosure.

[0037] Figure 2 This is a three-dimensional structural schematic diagram of a battery pack according to one embodiment of the present disclosure.

[0038] Figure 3 This is a partial structural schematic diagram of a battery pack according to one embodiment of the present disclosure.

[0039] Figure 4 This is a top view illustrating a battery pack according to an embodiment of this disclosure.

[0040] Figure 5 yes Figure 3 Sectional view at point BB.

[0041] Figure 6 yes Figure 4 A magnified view of a portion of point N in the middle.

[0042] Figure 7 yes Figure 3 Sectional view at point DD.

[0043] Figure 8 yes Figure 6 A magnified view of a section at point M.

[0044] Figure 9 This is a schematic flowchart illustrating a battery pack potting method according to one embodiment of the present disclosure.

[0045] Explanation of reference numerals in the attached figures

[0046] 1. Battery pack casing; 10. Battery cavity; 101. Filling area; 1011. Third filling area; 1013. First filling area; 1014. Second filling area; 11. Casing body; 110. Opening; 12. Top cover; 13. First inner side; 14. Second inner side;

[0047] 2. Battery module; 21. First outer side surface; 22. Second outer side surface;

[0048] 3. Sealing structure; 31. Upper sealing reinforcement; 32. Side sealing reinforcement;

[0049] 4. Filler adhesive; 41. First filler adhesive; 42. Second filler adhesive; 43. Third filler adhesive;

[0050] A. First direction; B. Second direction. Detailed Implementation

[0051] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0052] In this disclosure, unless otherwise stated, directional terms such as "upper" and "lower" refer to relative concepts in the direction of battery pack thickness. "Upper side" refers to one side of the battery pack's top cover, and "lower side" refers to one side of the bottom of the battery pack's casing. In actual installation, the "upper side" of the battery pack can be the same as the upper side of the vehicle under normal operating conditions, and the "lower side" can be the same as the lower side of the vehicle under normal operating conditions; alternatively, the "upper side" of the battery pack can be opposite to the upper side of the vehicle under normal operating conditions, and the "lower side" can be opposite to the lower side of the vehicle under normal operating conditions. In other words, the battery pack can be installed in the vehicle upright, reversed, or side-mounted; this disclosure does not limit this. For details, please refer to [link to relevant documentation]. Figure 1 As shown; the directional terms used, such as "first direction" and "second direction," can also be found in the following examples. Figure 1 As shown; the directional terms used, such as "inner" and "outer", refer to the inner and outer parts of the specific structural outline, and the terms used, such as "first" and "second", are only used to distinguish one element from another and do not have any order or importance.

[0053] Reference Figures 1 to 8 As shown, this disclosure provides a battery pack including a battery pack housing 1, a battery module 2, a sealing structure 3, and a filler adhesive 4. The battery pack housing 1 has a battery cavity 10, and the battery module 2 is disposed within the battery cavity 10, with the battery module 2 spaced apart from at least a portion of the inner wall of the battery cavity 10 to form a filling space. One side of the sealing structure 3 is connected to the outer peripheral edge of the battery module 2, and the other side abuts against the inner wall of the battery pack housing 1, capable of dividing the filling space into multiple independent filling areas 101. The filler adhesive 4 fills the multiple filling areas 101 to connect the battery module 2 to the inner wall of the battery pack housing 1.

[0054] It should be noted that the aforementioned battery module 2 is mainly composed of multiple stacked battery cells, serving as the power supply for the battery pack. For example, the battery module 2 of this disclosure may include a module housing and multiple battery cells, with the multiple battery cells stacked within the module housing. The module housing effectively protects the multiple battery cells, and the filler 4 of this disclosure may not be located within the module housing. Alternatively, the battery module 2 of this disclosure may not have a module housing; the multiple battery cells are stacked to form the battery module 2, and the filler 4 of this disclosure may fill the gaps between the battery cells.

[0055] In the above technical solution, firstly, the battery pack housing 1 has a battery cavity 10 for accommodating the battery module 2, which effectively protects the battery module 2. Secondly, by setting a sealing structure 3, with one side of the sealing structure 3 connected to the outer wall of the battery module 2 and the other side abutting against the inner wall of the battery pack housing 1, the filling space can be divided into multiple independent filling areas 101. By setting these multiple independent filling areas 101, the operator can fill the filling adhesive 4 into each of these multiple independent filling areas 101 one by one, avoiding the overall filling of the filling space inside the battery pack housing 1 with filling adhesive 4, thereby avoiding the problem of uneven filling and improving the uniformity of filling adhesive 4.

[0056] Optionally, at least two of the aforementioned filling regions 101 have different volumes. That is, the aforementioned sealing structure 3 can divide the filling space into filling regions 101 with different volumes. For filling regions 101 with different volumes, different amounts of filler adhesive 4 can be used, as well as filler adhesive 4 with different foaming rates and different foaming times. This allows for precise control of the filling of filler adhesive 4 according to the volume of each filling region 101, achieving uniform filling in different regions.

[0057] In one implementation, reference is made to Figures 1 to 3 As shown, the plurality of filling regions 101 include at least one first filling region 1013 and at least one second filling region 1014, wherein the volume of the first filling region 1013 is greater than the volume of the second filling region 1014.

[0058] The sealing structure 3 includes a plurality of side sealing ribs 32, one side of which is connected to the outer side wall of the battery module 2 and the other side abuts against the inner side wall of the battery pack housing 1. The plurality of side sealing ribs 32 are arranged in pairs along the circumferential direction of the outer side wall of the battery module 2, so as to separate the space between the outer side wall of the battery module 2 and the inner side wall of the battery pack housing 1 into at least one first filling area 1013 and at least one second filling area 1014.

[0059] In this embodiment, for the first filling area 1013 with a larger space, a filler adhesive 4 with a higher foaming rate can be used. The more fluffy the foam, the less filler adhesive 4 is needed. This effectively reduces the amount of filler adhesive 4 used, achieving effective filling to enhance pressure resistance and rigidity while also reducing costs.

[0060] For the smaller second filling area 1014, a filler adhesive 4 with a lower foaming rate can be used, which allows the adhesive to flow fully into the narrow area. It also makes it easier to effectively control the amount of filler adhesive 4 used, improve the high voltage creepage distance, and improve the overall pressure resistance and rigidity of the package, thereby improving the dispensing effect.

[0061] Furthermore, this disclosure does not limit the number of the first filling region 1013 and the second filling region 1014; in addition, this disclosure does not limit the arrangement of the first filling region 1013 and the second filling region 1014.

[0062] Optionally, the aforementioned side sealing rib 32 extends vertically and is disposed on the outer side wall of the battery module 2; the upper end of the side sealing rib 32 can abut against the inner surface of the upper cover 12 of the battery pack housing 1, the lower end of the side sealing rib 32 can abut against the inner bottom wall of the housing body 11 of the battery pack housing 1, and the side of the side sealing rib 32 can abut against the inner side wall of the housing body 11, so as to separate the aforementioned first filling area 1013 and second filling area 1014.

[0063] In one implementation, reference is made to Figure 1 ,as well as Figures 5 to 8 As shown, the plurality of filling regions 101 may further include a third filling region 1011. The sealing structure 3 also includes an upper sealing rib 31 connected to the plurality of side sealing ribs 32. The upper sealing rib 31 is disposed on at least a portion of the upper periphery of the battery module 2, and the upper sealing rib 31 protrudes from the upper surface of the battery module 2 and abuts against the inner wall of the upper cover 12 of the battery pack housing 1, so as to enclose the third filling region 1011 between the battery module 2 and the upper cover 12.

[0064] The battery pack housing 1 may include a housing body 11 and a top cover 12. The upper end of the housing body 11 has an opening 110, and the top cover 12 is disposed in the opening 110 to define the battery cavity 10.

[0065] In this embodiment, firstly, the battery module 2 may or may not include a module housing (not shown). For a battery module 2 including a module housing, the interior of the battery module 2 does not need to be filled with filler 4. For a battery module 2 including a module housing, the aforementioned third filling area 1011 may include two interconnected parts: one part is the gap between the individual battery cells of the battery module 2, and the other part is the space defined between the upper surface of the battery module 2 and the upper cover 12.

[0066] Secondly, regarding the arrangement of the upper sealing rib 31, it can either completely surround the upper edge of the battery module 2, or it can be set on a part of the upper edge of the battery module 2. For example, the upper sealing rib 31 can be set on the two opposite edges of the upper edge of the battery module 2 along the first direction A, or the upper sealing rib 31 can also be set on the two opposite edges of the upper edge of the battery module 2 along the second direction B. This disclosure does not limit the specific arrangement of the upper sealing rib 31.

[0067] In addition, by setting the upper sealing rib 31, the space between the upper surface of the battery module 2 and the upper cover 12 can be separated from other spaces, so that the space between the upper surface of the battery module 2 and the upper cover 12 can be potted independently, thereby effectively filling the narrow space, improving the high voltage creep distance and the overall pack pressure resistance and rigidity, and improving the potting effect.

[0068] In other implementations, refer to Figure 1 ,as well as Figures 3 to 8 As shown, the volume of the third filling region 1011 is smaller than the volume of the second filling region 1014; the filler adhesive 4 includes a first filler adhesive 41, a second filler adhesive 42, and a third filler adhesive 43. The first filler adhesive 41 is disposed in the first filling region 1013, the second filler adhesive 42 is disposed in the second filling region 1014, and the third filler adhesive 43 is disposed in the third filling region 1011; wherein, the first filler adhesive 41, the second filler adhesive 42, and the third filler adhesive 43 are all foamed adhesives, and the foaming rate of the first filler adhesive 41 is greater than the foaming rate of the second filler adhesive 42, and the foaming rate of the second filler adhesive 42 is greater than the foaming rate of the third filler adhesive 43.

[0069] In this embodiment, for the first filling area 1013 with a larger space, a first filler adhesive 41 with a larger foaming rate is used. The more fluffy the foam, the less the amount of the first filler adhesive 41 can be used. This achieves effective filling to enhance pressure resistance and rigidity while also reducing costs.

[0070] For the smaller second filling area 1014, using a second filler adhesive 42 with a lower foaming rate allows the adhesive to flow fully into the confined space, while also facilitating effective control of the amount of the second filler adhesive 42 used.

[0071] In addition, for the third filling area 1011 with the smallest space, the use of the third filler adhesive 43 with the lowest foaming rate can fully fill the space between the upper surface of the battery module 2 and the upper cover 12, thereby improving the connection strength between the upper surface of the battery module 2 and the upper cover 12.

[0072] In one implementation, reference is made to Figures 1 to 3 As shown, the battery module 2 includes a cuboid module, with multiple side sealing ribs 32 disposed on four corresponding side edges of the cuboid module to separate two first filling regions 1013 and two second filling regions 1014. The two first filling regions 1013 are located on both sides of the cuboid module along a first direction A, and the two second filling regions 1014 are located on both sides of the cuboid module along a second direction B. The first direction A and the second direction B are located in a horizontal plane and are perpendicular to each other. However, this disclosure does not limit the specific shape of the battery module 2.

[0073] Optionally, refer to Figures 1 to 3 As shown, the battery pack housing 1 includes a cuboid housing; the cuboid housing includes two first inner surfaces 13 that are opposite to each other and spaced apart along a first direction A, and two second inner surfaces 14 that are opposite to each other and spaced apart along a second direction B; the cuboid module includes two first outer surfaces 21 that are opposite to each other along the first direction A, and two second outer surfaces 22 that are opposite to each other along the second direction B; wherein, the first outer surfaces 21 and the corresponding first inner surfaces 13 are spaced apart along the first direction A to define a first filling area 1013, and the second outer surfaces 22 and the corresponding second inner surfaces 14 are spaced apart along the second direction B to define a second filling area 1014.

[0074] In this embodiment, for example, the first inner side 13 of the battery pack housing 1 can be its short side, and the second inner side 14 can be its long side. The first outer side 21 of the battery module 2 can be its short side, and the second outer side 22 can be its long side. The first outer side 21 and the corresponding first inner side 13 are spaced apart along a first direction A to define a larger first filling region 1013, and the second outer side 22 and the corresponding second inner side 14 are spaced apart along a second direction B to define a smaller and more elongated second filling region 1014. However, this disclosure does not limit the shape of the battery pack housing 1.

[0075] In another embodiment, the volume of the third filling region 1011 is not less than the volume of the second filling region 1014 and not greater than the volume of the first filling region 1013, and the second filling adhesive 42 is disposed in the third filling region 1011.

[0076] Optionally, the sealing structure 3 includes an elastic sealing strip, which is bonded to the outer periphery of the battery module 2. For example, the elastic sealing strip can be EPDM (Ethylene Propylene Diene Monomer), PU (Polyurethane), or foamed silicone, offering good compression performance and ease of filling. Furthermore, the elastic sealing strip possesses a certain degree of toughness, facilitating bonding and assembly. For instance, the elastic sealing strip can be pre-fixed using single-sided adhesive and then compressed to achieve sealing. The sealing strip has a compression width: it is recommended to control it between 3mm and 15mm. Considering the deviation in the sealing strip's bonding position, an effective compression width of 5mm to 10mm and a height of 4mm to 10mm are recommended. Specific dimensions can be set according to the hardness of the selected elastic sealing strip; softer strips require wider and thicker strips.

[0077] The upper cover 12 of the battery pack housing 1 mentioned above can be a sheet metal, liquid cooling plate, composite material or other structure, and this disclosure does not limit it; the housing body 11 of the battery pack housing 1 is a load-bearing and fixed installation structure, which can be an aluminum welded structure, a cast aluminum structure, a sheet metal stamping part or an injection molded part, and this disclosure does not limit it.

[0078] Furthermore, the method of potting filler 4 can be either partial or full potting. Different adhesives can be used in different areas (preferably the same system to avoid chemical reactions), or the same adhesive can be used in different areas. This disclosure does not limit this method.

[0079] Reference Figure 9 As shown, this disclosure also provides a battery pack potting method, which is applied to the above-mentioned battery pack and includes:

[0080] S11, The battery module 2 is placed inside the housing body 11 of the battery pack housing 1;

[0081] S12, connect the sealing structure 3 to the outer wall of the battery module 2;

[0082] S13, fill the multiple filling areas 101 with filler adhesive 4;

[0083] S14, the top cover 12 of the battery pack housing 1 is sealed at the opening 110 of the housing body 11.

[0084] In the above technical solution, by setting a sealing structure 3, with one side of the sealing structure 3 connected to the outer wall of the battery module 2 and the other side abutting against the inner wall of the battery pack housing 1, the filling space can be divided into multiple independent filling areas 101. By setting these multiple independent filling areas 101, the operator can fill the filling adhesive 4 into these multiple independent filling areas 101 one by one, avoiding the overall filling of the filling space inside the battery pack housing 1 with filling adhesive 4, thereby avoiding the problem of uneven filling and improving the uniformity of filling adhesive 4.

[0085] In some embodiments, filling the filler adhesive 4 into multiple filling regions 101 may include: calculating a first amount of filler adhesive 4 required for the first filling region 1013 based on its volume; calculating a second amount of filler adhesive 4 required for the second filling region 1014 based on its volume; first filling the first amount of filler adhesive 4 into the first filling region 1013, allowing it to stand for a first time, and then filling the second amount of filler adhesive 4 into the second filling region 1014. This allows for precise control and adjustment of the filling process in each filling region 101, avoiding poor filling. Alternatively, in other embodiments, multiple filling regions 101 may be filled simultaneously to improve filling efficiency; this disclosure does not limit this approach.

[0086] This disclosure also provides a vehicle that includes the aforementioned battery pack.

[0087] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of this disclosure. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0088] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A battery pack, characterized by, The battery pack comprises: a battery pack shell, which is formed with a battery cavity; a battery module, which is arranged in the battery cavity and is spaced apart from at least part of the inner wall of the battery cavity to form a filling space; a blocking structure, which is connected to the outer wall of the battery module on one side and is abutted against the inner wall of the battery pack shell on the other side, and is capable of separating the filling space into multiple independent filling areas; a filling glue, which is filled in multiple filling areas to connect the battery module to the inner wall of the battery pack shell. The volumes of at least two of the multiple filling areas are different.

2. The battery pack of claim 1, wherein, The filling areas with different volumes are filled with the filling glue with different foaming rates, wherein the foaming rate of the filling glue in the filling area with a larger space is greater than that in the filling area with a smaller space.

3. The battery pack of claim 2, wherein, The multiple filling areas comprise at least one first filling area and at least one second filling area, and the volume of the first filling area is greater than that of the second filling area.

4. The battery pack of any one of claims 1-3, wherein, The blocking structure comprises multiple side blocking ribs, one side of the side blocking rib is connected to the outer side wall of the battery module, and the other side is abutted against the inner side wall of the battery pack shell; the multiple side blocking ribs are arranged in pairs along the circumference of the outer side wall of the battery module to separate the space between the outer side wall of the battery module and the inner side wall of the battery pack shell into at least one first filling area and at least one second filling area. The multiple filling areas further comprise a third filling area.

5. The battery pack of claim 4, wherein, The blocking structure further comprises an upper blocking rib, which is arranged on at least part of the upper periphery of the battery module, and the upper blocking rib protrudes from the upper surface of the battery module and is abutted against the inner wall of the upper cover of the battery pack shell to surround the third filling area between the battery module and the upper cover. The upper blocking rib is connected to the multiple side blocking ribs.

6. The battery pack of claim 5, wherein, The volume of the third filling area is smaller than that of the second filling area.

7. The battery pack of claim 5, wherein, The filling glue comprises a first filling glue, a second filling glue, and a third filling glue, the first filling glue is arranged in the first filling area, the second filling glue is arranged in the second filling area, and the third filling glue is arranged in the third filling area. The first filling glue, the second filling glue, and the third filling glue are all foaming glue, and the foaming rate of the first filling glue is greater than that of the second filling glue, and the foaming rate of the second filling glue is greater than that of the third filling glue. The blocking structure comprises an elastic sealing strip, which is bonded to the outer peripheral edge of the battery module.

8. The battery pack of any one of claims 1-3, wherein, The battery pack glue filling method is applied to the battery pack of any one of claims 1-8, comprising:

9. A method of potting a battery pack, the method comprising: arranging the battery module in the shell body of the battery pack shell; connecting the blocking structure to the outer wall of the battery module; filling the filling glue in multiple filling areas; arranging the upper cover of the battery pack shell sealingly at the open port of the shell body. ​ 10. The battery pack potting method according to claim 9, wherein The plurality of filling areas includes at least one first filling area and at least one second filling area, a volume of the first filling area being greater than a volume of the second filling area; The filling of the filling glue into the plurality of filling areas includes: calculating a first glue amount of the filling glue required by the first filling area according to the volume of the first filling area; calculating a second glue amount of the filling glue required by the second filling area according to the volume of the second filling area; filling the first glue amount of the filling glue into the first filling area first, and then filling the second glue amount of the filling glue into the second filling area after a first standing time.

11. A vehicle characterized by comprising: The vehicle includes the battery pack of any one of claims 1-8.

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