Power battery pack and vehicle

Abstract

The utility model provides a power battery pack and a vehicle, and belongs to the technical field of automobiles, the power battery pack comprises a battery pack box body and a moisture absorption device; the moisture absorption device comprises an outer shell and a moisture absorption piece installed in the outer shell. The outer shell is arranged outside the battery pack box body and is detachably connected with the battery pack box body; a through hole is formed in the position, corresponding to the moisture absorption piece, of the battery pack box body, and the moisture absorption piece penetrates through the through hole to be located in the battery pack box body. According to the power battery pack, the moisture absorption part is located in the battery pack box body, water molecules in the battery pack can be absorbed, the moisture absorption requirement is met, the outer shell is detachably arranged on the outer side of the battery pack box body, the moisture absorption part can be replaced by disassembling the outer shell, and disassembly and assembly are convenient; the original sealing structure of the battery pack is not damaged, the internal humidity requirement and the sealing requirement of the battery pack can be simultaneously considered, and potential safety hazards are reduced.

Description

Technical Field

[0001] The present application relates to the field of automobile technology, and in particular to a power battery pack and a vehicle. Background Art

[0002] For battery-powered vehicles, moisture inside the power battery pack has always been a pain point for battery short-circuit safety.

[0003] At present, the hygroscopic products of battery packs on the market are all non-replaceable products. The protection of power batteries mainly involves the pre-arrangement of hygroscopic sheets (physical hygroscopic properties) in the battery pack box. However, the battery pack is not completely sealed. The presence of the balance valve causes gas flow between the battery pack and the outside world, and the gas flow is inevitably accompanied by the movement of water molecules. When the hygroscopic sheet in the battery pack absorbs enough water, the water molecules that subsequently enter the battery pack box will move freely in the battery pack as the temperature cycle of the battery cell is carried out due to its non-replaceability until water droplets are formed on the inner surface of the box, causing risks such as relay failure, battery cell short circuit, and material corrosion in the battery pack. It is very likely to cause thermal runaway, threatening the personal safety of the car owner. If the battery pack box is forcibly disassembled in order to replace the hygroscopic sheet, the original sealing structure of the battery pack will be destroyed, and the sealing requirements of the battery pack will not be met. Utility Model Content

[0004] In view of this, the present application aims to propose a power battery pack and a vehicle to solve the problem in the prior art that the hygroscopic product cannot be replaced, resulting in water droplets in the battery pack and potential safety hazards.

[0005] To achieve the above purpose, the technical solution of this application is implemented as follows:

[0006] A power battery pack comprises a battery pack case and a desiccant device; the desiccant device comprises an outer shell and a desiccant member installed in the outer shell; the outer shell is arranged outside the battery pack case and is detachably connected to the battery pack case; a through hole is opened on the battery pack case at a position corresponding to the desiccant member, and the desiccant member passes through the through hole and is located inside the battery pack case.

[0007] Through the above scheme, the desiccant device and the battery pack box are easy to disassemble, the desiccant component can be replaced in time, the internal humidity requirements and sealing requirements of the battery pack can be taken into account, and safety hazards can be reduced.

[0008] Furthermore, the moisture absorbent component includes a moisture absorbent core and a mounting shell; a receiving cavity is formed inside the mounting shell, and the moisture absorbent core is arranged in the receiving cavity; a plurality of moisture absorbent holes are arranged on the mounting shell, and the interior of the mounting shell is connected with the interior of the battery pack case through the moisture absorbent holes.

[0009] Through the above scheme, the moisture absorption holes are provided on the mounting shell so that the accommodating cavity inside the mounting shell can communicate with the interior of the battery pack case, so that the moisture absorption core absorbs moisture in the air inside the battery pack case.

[0010] Furthermore, the absorbent core includes a hygroscopic material, and the hygroscopic material can absorb water and change color after absorbing water.

[0011] Through the above technical solution, the hygroscopic material will change color after absorbing water. The color state of the internal hygroscopic core can be directly observed through the hygroscopic holes on the mounting shell. The degree of water absorption of the hygroscopic core can be judged according to the degree of color change after absorbing water, thereby judging whether the hygroscopic core needs to be replaced, which is convenient and intuitive.

[0012] Furthermore, the outer shell includes a main body and a fixing part; a first connecting member is provided on the inner side of the main body, and the main body and the moisture absorbent are detachably connected via the first connecting member; the fixing part is provided on the outer side of the main body and is connected to the main body, and the fixing part and the battery pack case are detachably connected via a second connecting member.

[0013] Through the above technical solution, the desiccant component is detachably connected to the first connecting component, which can realize flexible disassembly and assembly of the desiccant component in the main body, and facilitate replacement of the desiccant core; the fixed part and the battery pack case are detachably connected through the second connecting component, which can realize flexible disassembly and assembly between the outer shell and the battery pack case.

[0014] Furthermore, the first connecting member includes a first connecting portion and a second connecting portion; one end of the mounting shell is an open end, the first connecting portion is adapted to the shape and size of the open end, and the first connecting portion is detachably connected to the open end; the second connecting portion is fixedly connected to the first connecting portion, and the second connecting portion is fixedly connected to the inner wall of the main body.

[0015] Through the above technical solution, the first connecting part is detachably connected to the open end, so that the moisture absorbent component can be disassembled in the outer shell, which is convenient for replacing the moisture absorbent core; the second connecting part is connected to the first connecting part and the main body at the same time, which can support and stabilize the first connecting part, thereby ensuring the installation reliability of the moisture absorbent component.

[0016] Furthermore, the second connection part includes a plurality of connection bars, which are arranged around the first connection part; one end of the connection bar is connected to the first connection part, and the other end of the connection bar is connected to the inner wall of the main body.

[0017] Through the above technical solution, a plurality of connecting strips are arranged around the first connecting portion, which can support and stabilize the first connecting portion and ensure the installation reliability of the moisture absorbent component.

[0018] Furthermore, a sealing structure is provided between the main body and the battery pack box.

[0019] Through the above solution, by providing a sealing structure between the main body and the battery pack case, a sealed connection between the outer shell and the battery pack case can be achieved, thereby ensuring the sealing requirements of the battery pack.

[0020] Furthermore, the sealing structure includes a sealing strip; a sealing groove adapted to the sealing strip is opened on one side of the main body facing the battery pack case, and the sealing strip is arranged in the sealing groove.

[0021] Through the above solution, when the moisture absorption device is assembled with the battery pack body, the sealing strip is tightly filled in the gap between the main body and the battery pack body, thereby ensuring the sealing effect.

[0022] Furthermore, the second connecting member includes a bolt and a rivet nut; the rivet nut is arranged on the battery pack body, and the bolt passes through the fixing portion to be threadedly connected with the rivet nut.

[0023] Compared with the prior art, the power battery pack described in this application has the following advantages:

[0024] (1) The power battery pack described in the present application comprises a battery pack case and a desiccant device; the desiccant device comprises an outer shell and a desiccant member installed in the outer shell; the outer shell is arranged outside the battery pack case and is detachably connected to the battery pack case; a through hole is provided on the battery pack case at a position corresponding to the desiccant member, and the desiccant member passes through the through hole and is located inside the battery pack case; in the present application, by installing the desiccant member of the desiccant device in the outer shell and extending it into the battery pack case, the water molecules inside the battery pack can be fully absorbed to meet the desiccant requirements, and the outer shell is detachably arranged on the outside of the battery pack case, and the desiccant member can be replaced by disassembling the outer shell, and the disassembly and assembly operation is very convenient, and will not damage the original sealing structure of the battery pack case, and can simultaneously take into account the internal humidity requirements and sealing requirements of the battery pack, thereby reducing safety hazards.

[0025] (2) The power battery pack described in the present application, the hygroscopic component includes a hygroscopic core and a mounting shell; the mounting shell is formed with a receiving cavity inside, and the hygroscopic core is arranged in the receiving cavity; the mounting shell is provided with a plurality of hygroscopic holes, and the interior of the mounting shell is connected with the interior of the battery pack case through the hygroscopic holes; the hygroscopic core includes a hygroscopic material, and the hygroscopic material can absorb water and change color after absorbing water. By providing hygroscopic holes on the mounting shell, the present application can, on the one hand, realize the communication between the interior of the mounting shell and the interior of the battery pack case, ensuring that the hygroscopic core can absorb moisture from the interior of the battery pack case; on the other hand, the hygroscopic holes can be used to conveniently observe the color state of the internal hygroscopic core, and the degree of water absorption can be judged according to the degree of color change after absorbing water, so as to replace the hygroscopic core in time.

[0026] Another object of the present application is to provide a vehicle comprising the power battery pack as described above.

[0027] The advantages of the vehicle and the above-mentioned power battery pack over the prior art are the same and will not be elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0029] Figure 1 Schematic diagram of the assembly of the moisture absorption device and the battery pack box in the power battery pack according to the embodiment of the present application Figure 1 (View from outside the battery pack box);

[0030] Figure 2 This is a schematic diagram of the connection structure between the moisture absorption device and the battery pack box in the power battery pack according to an embodiment of the present application;

[0031] Figure 3 It is a schematic diagram of the three-dimensional structure of the moisture absorption device in the power battery pack according to an embodiment of the present application;

[0032] Figure 4 A cross-sectional view of a moisture absorption device in a power battery pack according to an embodiment of the present application;

[0033] Figure 5 Schematic diagram of the assembly of the moisture absorption device and the battery pack box in the power battery pack according to the embodiment of the present application Figure 2 (Inside view of the battery pack case).

[0034] Description of reference numerals:

[0035] 1. Battery pack case; 2. Desiccant device; 21. Outer shell; 211. Main body; 212. Fixing part; 22. Desiccant member; 221. Desiccant core; 222. Mounting shell; 223. Desiccant hole; 23. First connecting member; 231. First connecting part; 232. Second connecting part; 24. Sealing groove; 25. Sealing strip; 26. Bolt; 27. Rivet nut. DETAILED DESCRIPTION

[0036] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0037] In addition, the directions or positional relationships indicated by "inside", "outside", "upper", "lower", "front", "back" and the like mentioned in the embodiments of the present application are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the devices or elements referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present application. In addition, relational terms such as "first" and "second" are merely used to distinguish one entity from another, and do not necessarily require or imply any such actual relationship or order between these entities, nor can they be understood as indicating or implying relative importance.

[0038] The present application will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0039] In the related art, the main method of protecting power batteries from moisture absorption is to place a moisture absorbent sheet in the battery pack box in advance to absorb moisture through physical properties. However, the moisture absorbent sheet cannot be replaced after absorbing enough water, causing the water molecules that subsequently enter the battery pack box to move freely in the battery pack as the temperature cycle of the battery cell continues until water droplets form on the inner surface of the box, causing risks such as relay failure, battery cell short circuit, and material corrosion. If the battery pack box is forcibly disassembled in order to replace the moisture absorbent sheet, the original sealing structure of the battery pack will be destroyed, and the sealing requirements of the battery pack IP68 cannot be met.

[0040] In view of this, an embodiment of the present application provides a power battery pack.

[0041] See also Figure 1 and Figure 2 A power battery pack comprises a battery pack case 1 and a desiccant device 2; the desiccant device 2 comprises an outer shell 21 and a desiccant member 22 installed in the outer shell 21; the outer shell 21 is arranged outside the battery pack case 1 and is detachably connected to the battery pack case 1; a through hole is opened on the battery pack case 1 at a position corresponding to the desiccant member 22, and the desiccant member 22 passes through the through hole and is located inside the battery pack case 1.

[0042] Specifically, the desiccant device 2 includes an outer shell 21 and a desiccant member 22. The outer shell 21 is used to provide an installation base for the desiccant member 22. The desiccant member 22 is arranged in the outer shell 21. When installed, the side of the outer shell 21 provided with the desiccant member 22 faces the battery pack case 1. A through hole is provided on the battery pack case 1 at a position corresponding to the desiccant member 22, so that the desiccant member 22 can pass through the through hole and extend into the interior of the battery pack case 1 to absorb moisture in the air inside the battery pack case 1. Since the outer shell 21 is detachably connected to the battery pack case 1, when the desiccant member 22 needs to be replaced, the entire desiccant device 2 can be quickly and conveniently removed. Since the outer shell 21 is arranged on the outside of the battery pack case 1 instead of inside, when the desiccant device 2 is removed, the original sealing structure of the battery pack case 1 will not be damaged, and the sealing performance of the battery pack will not be affected.

[0043] Through the above arrangement, the desiccant device 2 and the battery pack box 1 are easy to disassemble, and the desiccant component 22 can be replaced in time, which can take into account the internal humidity requirements and sealing requirements of the battery pack and reduce safety hazards.

[0044] Furthermore, the moisture absorbent component 22 includes a moisture absorbent core 221 and a mounting shell 222; a receiving cavity is formed inside the mounting shell 222, and the moisture absorbent core 221 is arranged in the receiving cavity; a plurality of moisture absorbent holes 223 are arranged on the mounting shell 222, and the interior of the mounting shell 222 is connected to the interior of the battery pack case 1 through the moisture absorbent holes 223.

[0045] Specifically, the moisture absorbent core 221 is the core component of the moisture absorbent member 22, which is used to absorb moisture in the battery pack box 1, and the mounting shell 222 is used to provide sufficient accommodation space and a stable mounting base for the moisture absorbent core 221. Figure 3 and Figure 4 In this embodiment, the shape of the mounting shell 222 is set to be cylindrical, and a cylindrical accommodating cavity is formed inside it. One end of the mounting shell 222 is an open end, and the size of the opening is greater than or equal to the cross-sectional size of the moisture absorbent core 221, so that the moisture absorbent core 221 can be placed in the accommodating cavity or taken out of the accommodating cavity through the opening. A plurality of moisture absorption holes 223 are provided on the mounting shell 222. By providing the moisture absorption holes 223, the accommodating cavity inside the mounting shell 222 can be communicated with the interior of the battery pack case 1, so that the moisture absorbent core 221 absorbs moisture in the air inside the battery pack case 1.

[0046] Optionally, the moisture absorption holes 223 may be provided on the side wall and / or the bottom of the cylindrical mounting shell 222. Figure 3As shown, in this embodiment, a moisture absorption hole 223 is provided at the center of the bottom of the cylindrical mounting shell 222, and multiple moisture absorption holes 223 are provided on the side wall. The multiple moisture absorption holes 223 are distributed at intervals along the circumference of the side wall to ensure that the moisture absorption core 221 can fully contact the air in the battery pack box 1 to ensure sufficient water absorption. In actual applications, the number and size of the moisture absorption holes 223 can be reasonably adjusted according to actual needs.

[0047] Furthermore, the absorbent core 221 includes a hygroscopic material, which can absorb water and change color after absorbing water.

[0048] The moisture absorbent core 221 is made of a moisture absorbent material that changes color after absorbing water. Since a plurality of moisture absorbent holes 223 are provided on the mounting shell 222, when the user removes the outer shell 21 of the moisture absorbent device 2 from the battery pack case 1, the color state of the internal moisture absorbent core 221 can be directly observed through the moisture absorbent holes 223. The degree of color change of the moisture absorbent core 221 after absorbing water can be used to determine the degree of water absorption of the moisture absorbent core 221, thereby determining whether the moisture absorbent core 221 needs to be replaced, which is very convenient and intuitive.

[0049] Specifically, the hygroscopic material can be anhydrous copper sulfate, which is a white or off-white powder under dry conditions. After absorbing water, it reacts with water to generate blue copper sulfate pentahydrate crystals. In other embodiments, the hygroscopic material can also be color-changing silica gel, such as blue silica gel containing cobalt chloride, which changes color from blue to pink after absorbing water.

[0050] Furthermore, the outer shell 21 includes a main body 211 and a fixing portion 212; a first connecting member 23 is provided on the inner side of the main body 211, and the main body 211 and the moisture absorbent member 22 are detachably connected via the first connecting member 23; the fixing portion 212 is provided on the outer side of the main body 211 and is connected to the main body 211, and the fixing portion 212 and the battery pack case 1 are detachably connected via a second connecting member.

[0051] Specifically, the outer shell 21 includes a main body 211 and a fixing portion 212, please refer to Figure 3 and Figure 4 In this embodiment, the main body 211 includes a circular bottom and a side enclosure arranged around the bottom, and a columnar installation space is enclosed between the bottom and the side enclosure. The first connecting member 23 is arranged in the installation space, and the moisture absorbent member 22 is detachably connected to the first connecting member 23, so that the moisture absorbent member 22 can be flexibly disassembled and assembled in the main body 211, making it convenient to replace the moisture absorbent core 221.

[0052] The fixing part 212 is connected to the side outer wall of the main body 211 and is used to connect with the battery pack box 1. In this embodiment, two fixing parts 212 are provided, and the two fixing parts 212 are arranged opposite to each other, with beautiful structure and uniform force distribution, ensuring the stability of the connection.

[0053] Furthermore, the first connecting member 23 includes a first connecting portion 231 and a second connecting portion 232; one end of the mounting shell 222 is an open end, the first connecting portion 231 is adapted to the shape and size of the open end, and the first connecting portion 231 is detachably connected to the open end; the second connecting portion 232 is fixedly connected to the first connecting portion 231, and the second connecting portion 232 is fixedly connected to the inner wall of the main body 211.

[0054] Specifically, in this embodiment, the shape of the mounting shell 222 is cylindrical, and the open end is circular, and the first connecting portion 231 is also configured to be annular, and is disposed at the center of the main body 211, corresponding to the position of the open end. The second connecting portion 232 is fixedly connected to the first connecting portion 231, and is also fixedly connected to the inner wall of the main body 211, which can ensure the stability of the first connecting portion 231 at the center of the main body 211, thereby ensuring the installation reliability of the mounting shell 222.

[0055] A protruding structure may be provided on the side of the first connecting portion 231 facing the open end, and a detachable connection between the first connecting portion 231 and the mounting shell 222 may be achieved by utilizing the snap-fitting cooperation between the protruding structure and the inner wall of the open end; an external thread may also be provided on the first connecting portion 231 and an internal thread may be provided on the open end, and a detachable connection between the first connecting portion 231 and the mounting shell 222 may be achieved by a threaded connection.

[0056] In this embodiment, the open end of the mounting shell 222 is arranged on the side facing the main body 211 and is directly and detachably connected to the first connecting portion 231. When the mounting shell 222 is removed from the main body 211, the moisture absorbent core 221 can be taken out or put in from the open end. After the moisture absorbent core 221 is put in, the mounting shell 222 is reinstalled into the main body 211. At this time, since the open end is connected to the first connecting portion 231, the first connecting portion 231 or the main body 211 can serve as a barrier to the open end to prevent the moisture absorbent core 221 from directly falling out of the open end, thereby ensuring the stability of the moisture absorbent core 221 during use.

[0057] In another optional embodiment, the open end of the mounting shell 222 can also be set on a side away from the main body 211, and the mounting shell 222 is directly fixed to the main body 211. An openable and closable cover body adapted to it is set at the open end to facilitate the removal, placement and replacement of the moisture-absorbing core 221.

[0058] Furthermore, the second connection portion 232 includes a plurality of connection bars, which are arranged around the first connection portion 231 ; one end of the connection bar is connected to the first connection portion 231 , and the other end of the connection bar is connected to the inner wall of the main body 211 .

[0059] Specifically, in this embodiment, the first connection part 231 is in the shape of a ring and is arranged at the center of the main body 211. To ensure the installation stability of the first connection part 231 at the center of the main body 211, the second connection part 232 uses a plurality of connection bars, which are radially distributed around the ring-shaped first main body 211. One end of the connection bar is fixedly connected to the first main body 211, and the other end is fixedly connected to the inner wall of the side of the main body 211 to support the first main body 211 in the circumferential direction. The plurality of connection bars are evenly spaced to ensure uniform force distribution and improve the strength and stability of the structure.

[0060] In this embodiment, four connecting bars are provided, and the angle between two adjacent connecting bars is 90 degrees. In other embodiments, the number of connecting bars can be flexibly adjusted according to actual needs.

[0061] Furthermore, the second connecting member includes a bolt 26 and a rivet nut 27 ; the rivet nut 27 is disposed on the battery pack box 1 , and the bolt 26 passes through the fixing portion 212 and is threadedly connected to the rivet nut 27 .

[0062] Specifically, a bolt hole is provided on the fixing portion 212, and a rivet nut 27 is installed at the installation position of the battery pack case 1 corresponding to the bolt 26. After installation, the head of the rivet nut 27 will clamp the inner and outer walls of the battery pack case 1 by deformation, so as to be firmly fixed on the battery pack case 1. Then, the bolt 26 is passed through the bolt hole on the fixing portion 212 and screwed into the rivet nut 27. The bolt 26 and the rivet nut 27 are threadedly matched. After the bolt 26 is tightened, the outer shell 21 and the battery pack case 1 can be fixed. When disassembling, the bolt 26 is loosened to remove the outer shell 21 together with the moisture absorbent 22 from the battery pack case 1.

[0063] In other embodiments, the detachable connection between the desiccant device 2 and the battery pack case 1 may also be achieved by snapping, plugging, or the like, or by utilizing the threads, bolts, and other structures of the desiccant device 2 itself.

[0064] Furthermore, a sealing structure is provided between the main body 211 and the battery pack case 1 .

[0065] By providing a sealing structure between the main body 211 and the battery pack case 1 , a sealed connection between the main body 211 and the battery pack case 1 can be achieved, thereby ensuring the sealing requirements of the battery pack.

[0066] Furthermore, the sealing structure includes a sealing strip 25 ; a sealing groove 24 adapted to the sealing strip 25 is formed on one side of the main body 211 facing the battery pack case 1 , and the sealing strip 25 is disposed in the sealing groove 24 .

[0067] Specifically, in this embodiment, the side of the main body 211 facing the battery pack case 1 is an annular surface, and an annular groove is provided on the annular surface as the sealing groove 24. The sealing strip 25 is also correspondingly provided in an annular shape, and is adapted to the size of the sealing groove 24. The sealing strip 25 is installed in the sealing groove 24. When the outer shell 21 and the battery pack case 1 are assembled, the side of the main body 211 facing the battery pack case 1 is in close contact with the battery pack case 1, and the sealing strip 25 is tightly filled in the gap between the main body 211 and the battery pack case 1, which can ensure the sealing effect.

[0068] For the power battery pack described in this embodiment, when assembling the desiccant device 2, first, place the desiccant core 221 from the open end of the mounting shell 222 into the interior of the mounting shell 222, and connect the open end of the mounting shell 222 to the first connecting portion 231, so as to realize the installation of the desiccant member 22 in the outer shell 21; when assembling the desiccant device 2 and the battery pack case 1, first, point the side of the outer shell 21 on which the desiccant member 22 is installed toward the battery pack case 1, align with the through hole on the battery pack case 1, so that the desiccant member 22 passes through the through hole and extends into the battery pack case 1, and then install the rivet nut 27 on the battery pack case 1, and then align the bolt hole on the fixing portion 212 with the rivet nut 27, and use the bolt 26 to pass through the bolt hole and tighten the rivet nut 27 to complete the assembly of the desiccant device 2 and the battery pack case 1.

[0069] In actual use, the user can remove the moisture absorption device 2 regularly for inspection according to the driving environment, mileage and life of the battery pack, so as to confirm whether the moisture absorption core 221 needs to be replaced. When disassembling, the outer shell 21 and the moisture absorption member 22 can be removed from the battery pack case 1 by screwing out the bolt 26. At this time, the user can directly observe the color state of the internal moisture absorption core 221 through the moisture absorption hole 223 on the mounting shell 222, and the degree of water absorption can be judged according to the degree of color change, so as to determine whether the moisture absorption core 221 needs to be replaced. If replacement is required, the mounting shell 222 is removed from the first connecting portion 231, the old moisture absorption core 221 is taken out from the open end of the mounting shell 222, and a new moisture absorption core 221 is installed. Then, by connecting the mounting shell 222 and the first connecting portion 231, the moisture absorption member 22 is reinstalled on the outer shell 21, and finally the entire moisture absorption device 2 is reinstalled on the battery pack case 1. The whole process is easy to operate, ensuring the replaceability of the hygroscopic components, meeting the humidity requirements inside the battery pack, and effectively avoiding the safety risks caused by the formation of water droplets. In addition, the entire disassembly and assembly process will not damage the structure of the battery pack case 1 itself, and can take into account the sealing requirements of the battery pack.

[0070] An embodiment of the present application also provides a vehicle, comprising the power battery pack as described above.

[0071] The advantages of the vehicle and the above-mentioned power battery pack over the prior art are the same and will not be elaborated here.

[0072] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A power battery pack, characterized in that: include: Battery pack case and moisture absorbing device; The moisture absorbing device comprises an outer shell and a moisture absorbing member installed in the outer shell; The outer shell is arranged outside the battery pack case and is detachably connected to the battery pack case; A through hole is provided on the battery pack case at a position corresponding to the moisture absorbent member, and the moisture absorbent member passes through the through hole and is located inside the battery pack case.

2. The power battery pack according to claim 1, characterized in that: The absorbent member comprises an absorbent core and a mounting shell; The interior of the installation shell is formed with a receiving cavity, and the moisture absorbent core is arranged in the receiving cavity; The mounting shell is provided with a plurality of moisture absorption holes, and the interior of the mounting shell is connected with the interior of the battery pack case through the moisture absorption holes.

3. The power battery pack according to claim 2, characterized in that: The absorbent core includes a hygroscopic material that can absorb water and change color after absorbing water.

4. The power battery pack according to claim 2, characterized in that: The outer shell includes a main body and a fixing part; A first connecting member is disposed on the inner side of the main body, and the main body and the moisture absorbent member are detachably connected via the first connecting member; The fixing portion is arranged at the outside of the main body and connected to the main body, and the fixing portion is detachably connected to the battery pack case via a second connecting member.

5. The power battery pack according to claim 4, characterized in that: The first connecting member includes a first connecting portion and a second connecting portion; One end of the mounting shell is an open end, the first connecting portion is adapted to the shape and size of the open end, and the first connecting portion is detachably connected to the open end; The second connection portion is fixedly connected to the first connection portion, and the second connection portion is fixedly connected to the inner wall of the main body.

6. The power battery pack according to claim 5, characterized in that: The second connection part includes a plurality of connection bars, which are arranged around the first connection part; one end of each connection bar is connected to the first connection part, and the other end of each connection bar is connected to the inner wall of the main body.

7. The power battery pack according to claim 4, characterized in that: A sealing structure is provided between the main body and the battery pack case.

8. The power battery pack according to claim 7, characterized in that: The sealing structure comprises a sealing strip; A sealing groove adapted to the sealing strip is formed on one side of the main body facing the battery pack case, and the sealing strip is arranged in the sealing groove.

9. The power battery pack according to claim 4, characterized in that: The second connecting member includes a bolt and a rivet nut; The rivet nut is arranged on the battery pack box, and the bolt passes through the fixing portion and is threadedly connected with the rivet nut.

10. A vehicle, characterized in that: Comprising a power battery pack as described in any one of claims 1 to 9.

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