Glue blocking sheet and battery pack

Abstract

The utility model relates to the technical field of batteries, and provides a film blocking piece and a battery pack. The film blocking piece comprises a main body part and an adhesive layer. The main body part is provided with a first through hole. The first through hole is configured to allow a power connector to pass through. The adhesive layer is arranged on the main body part. The adhesive layer is configured to adhere the upper cover. Therefore, the installation efficiency of the rubber blocking piece can be improved, and the phenomenon of rubber overflowing caused by the fact that the rubber blocking piece is not installed in time is prevented. Meanwhile, the problem of short circuit of the battery pack caused by the fact that bolts and other fasteners fall into the electrical bin can be avoided, and potential safety hazards are reduced.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, specifically to a protective film and a battery pack. Background Technology

[0002] In related technologies, after the battery module is placed in the battery box, expanding foam needs to be filled into the battery box to improve the thermal safety and structural performance of the battery module. Before the expanding foam is filled into the battery box and before it expands, the electrical connectors need to be passed through the wiring holes of the top cover, and then the electrical connectors and the retaining film are locked to the top cover with bolts. However, due to the rapid expansion rate of the expanding foam, the retaining film may not be locked in time, or the gap between the retaining film and the electrical connector may be too large, causing the retaining film to fail to play its due role in preventing the expanding foam from overflowing from the gap between the wiring holes and the electrical connectors into the electrical compartment. This overflow of expanding foam will reduce the amount of expanding foam at the battery module, and the sealing effect of the battery module may not meet the safety requirements. Utility Model Content

[0003] The present invention provides a baffle and a battery pack, which can be quickly installed on the top cover by adhesive bonding, thereby improving the installation efficiency of the baffle and preventing glue overflow caused by untimely installation of the baffle.

[0004] In a first aspect, embodiments of the present invention provide a baffle sheet applied to a battery box, the battery box including a top cover, the baffle sheet comprising:

[0005] The main body has a first through hole, which is configured for a power supply connector to pass through.

[0006] An adhesive layer is provided on the main body portion, and the adhesive layer is configured to adhere the upper cover.

[0007] In one embodiment, the first through hole is interference-fitted with the electrical connector.

[0008] In one embodiment, the size difference between the first through hole and the electrical connector is δ1, satisfying: 0.5 mm ≤ δ1 ≤ 5 mm.

[0009] In one embodiment, the baffle sheet further includes:

[0010] A connecting portion is located on the side of the main body where the adhesive layer is provided. The connecting portion is circumferentially disposed around the first through hole and is configured to allow the electrical connector to pass through.

[0011] In one embodiment, the connecting portion is interference-fitted with the electrical connector.

[0012] In one embodiment, the size difference between the inner ring of the connecting portion and the electrical connector is δ2, satisfying: 0.5 mm ≤ δ2 ≤ 5 mm.

[0013] In one embodiment, the baffle sheet is a flexible baffle sheet.

[0014] Secondly, embodiments of the present invention provide a battery pack, comprising:

[0015] As mentioned above, the protective film;

[0016] A battery box has a top cover with a second through hole, an adhesive layer is bonded to the top cover, and the first through hole is connected to the second through hole;

[0017] An electrical connector is provided through the first through hole and the second through hole.

[0018] In one embodiment, the baffle includes a connecting portion located on the side of the main body where the adhesive layer is provided, wherein the connecting portion passes through the second through hole.

[0019] In one embodiment, the battery box contains a battery module, and the main body is bonded to the side of the top cover facing the battery module by the adhesive layer.

[0020] The beneficial effects of the embodiments of this utility model are as follows:

[0021] In an embodiment of this utility model, an electrical connector is inserted through the first through hole on the main body. When the baffle needs to be installed on the upper cover, it can be bonded to the upper cover using an adhesive layer, replacing the bolt-locking method. This improves the installation efficiency of the baffle and prevents adhesive overflow caused by untimely installation. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a three-dimensional schematic diagram of the baffle sheet provided in an embodiment of this utility model;

[0024] Figure 2 This is one of the connection diagrams of the electrical connector and the baffle provided in the embodiment of this utility model;

[0025] Figure 3This is a second schematic diagram showing the connection between the electrical connector and the baffle provided in an embodiment of this utility model;

[0026] Figure 4 This is an exploded view of the battery pack provided in an embodiment of this utility model.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Sheet; 11. Main body; 12. Adhesive layer; 13. Connecting part;

[0029] 2. Battery box; 21. Top cover;

[0030] 3. Electrical connectors. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of the present utility model and are not intended to limit the present utility model. In the present utility model, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0032] like Figures 1 to 4 As shown, this application embodiment provides a retaining film 1. The retaining film 1 is applied to a battery box 2. The battery box 2 includes a top cover 21. The retaining film 1 includes a main body 11 and an adhesive layer 12. The main body 11 has a first through hole. The first through hole is configured for a power supply connector 3 to pass through. The adhesive layer 12 is disposed on the main body 11. The adhesive layer 12 is configured to adhere to the top cover 21.

[0033] In this embodiment, the electrical connector 3 passes through the first through hole on the main body 11. When the baffle 1 needs to be installed on the upper cover 21, it can be bonded to the upper cover 21 using an adhesive layer, replacing the bolt-locking method. This improves the installation efficiency of the baffle 1 and prevents adhesive overflow due to delayed installation. The adhesive method of fixing the baffle 1 to the upper cover 21 also avoids short circuits in the battery pack caused by bolts or other fasteners falling into the electrical compartment, reducing safety hazards.

[0034] Understandably, after the battery module is placed in the battery box 2, the electrical connector 3 of the battery module needs to pass through the top cover 21 and enter the electrical compartment. Due to limitations of the production line and manufacturing process, after filling the battery box 2 with expanding foam, the expanding foam needs to be foamed first, and then the electrical connector 3 is passed through the second through hole of the top cover 21 and fixed with the baffle 1. Since the adhesive layer 12 is used to connect the main body 11 to the top cover 21 in this embodiment, the main body 11 can be quickly fixed to the top cover 21. As a result, the installation efficiency of the baffle 1 is greater than the foaming efficiency of the expanding foam, and the baffle 1 can be installed before the expanding foam is completed, so as to prevent the phenomenon of glue overflow caused by the untimely installation of the baffle 1.

[0035] In some embodiments, the main body 11 is bonded to the side of the top cover 21 facing the battery module via an adhesive layer 12. When the battery box 2 is filled with expanding foam and foaming is performed, the expanding foam overflows onto the upper surface of the top cover 21 and can further compress the baffle 1, making the bond between the baffle 1 and the top cover 21 more secure and further ensuring the reliability of the sealing baffle. Specifically, the side of the top cover 21 facing the battery module is the lower surface of the top cover 21, and the main body 11 is bonded to the lower surface of the top cover 21 via the adhesive layer 12.

[0036] In some embodiments, a second through hole is formed on the top cover 21. After the main body 11 is bonded to the top cover 21 by the adhesive layer 12, the first through hole of the main body 11 is connected to the second through hole of the top cover 21, so that the electrical connector 3 can pass through the first through hole and the second through hole, ensuring that the electrical connector 3 can pass from the battery compartment of the battery box 2 into the electrical compartment of the battery box 2.

[0037] In some embodiments, the electrical connector 3 includes a busbar, a wire harness, etc.

[0038] In some embodiments, the first through hole is located at the middle position of the main body 11. After ensuring that the main body 11 is connected to the upper cover 21 via the adhesive layer 12, the first through hole and the second through hole are connected.

[0039] In some embodiments, the adhesive layer 12 is an adhesive backing provided on the main body 11. It is sufficient to ensure that the main body 11 can be reliably bonded to the top cover 21 via the adhesive layer 12; the specific type of adhesive layer 12 is not limited in this application embodiment.

[0040] In some embodiments, the baffle 1 may further include release paper attached to the side of the adhesive layer 12 away from the main body 11. After the foaming adhesive is filled into the battery compartment, the release paper can be peeled off, thereby using the adhesive layer 12 to bond the baffle 1 to the upper surface of the cover 21, achieving quick installation of the baffle 1.

[0041] In some embodiments, the first through hole is interference-fitted with the electrical connector 3.

[0042] Understandably, based on the interference fit between the first through hole and the electrical connector 3, the size of the first through hole is smaller than the size of the electrical connector 3. When the electrical connector 3 passes through the first through hole, the outer surface of the electrical connector 3 can form a tight fit with the inner surface of the first through hole. This ensures the sealing of the connection between the main body 11 and the electrical connector 3 at the first through hole, preventing glue leakage gaps at the first through hole and avoiding the intrusion of foam adhesive into the electrical compartment.

[0043] like Figure 2 As shown, electrical connector 3 is a busbar. The cross-section of electrical connector 3 is usually set to square. In this case, the length of electrical connector 3 is slightly greater than the length of the first through hole, and the width of electrical connector 3 is slightly greater than the width of the first through hole.

[0044] like Figure 3 As shown, electrical connector 3 is a cable. The cross-section of electrical connector 3 is usually set to circular. In this case, the diameter of electrical connector 3 is slightly larger than the diameter of the first through hole.

[0045] In some embodiments, the dimensional difference between the first through hole and the electrical connector 3 is δ1, satisfying: 0.5 mm ≤ δ1 ≤ 5 mm.

[0046] It is understandable that the size difference δ1 between the first through hole and the electrical connector 3 is set in the range of 0.5 mm to 5 mm, so that the main body 11 and the electrical connector 3 can achieve a good sealing connection, and facilitate the insertion of the electrical connector 3, so as to ensure the rapid assembly of the electrical connector 3 and the baffle plate 1.

[0047] When the dimensional difference between the first through hole and the electrical connector 3 is less than 0.5 mm, the deformation effect of the main body 11 during assembly is not obvious, resulting in poor contact between the main body 11 and the electrical connector 3 and poor sealing performance. When the dimensional difference between the first through hole and the electrical connector 3 is less than 0.5 mm, the main body 11 and the electrical connector 3 may also fail to form an interference fit due to manufacturing tolerances, resulting in poor sealing performance. When the dimensional difference between the first through hole and the electrical connector 3 is greater than 5 mm, the electrical connector 3 is difficult to insert into the first through hole, making assembly between the electrical connector 3 and the main body 11 inconvenient and inefficient. In this case, the assembly rate of the baffle 1 may be less than the foaming rate of the foam, causing the foam to overflow into the electrical compartment.

[0048] For example, the dimensional difference δ1 between the first through hole and the electrical connector 3 is set to 0.5 mm, 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, or any value between the two.

[0049] It should be noted that since the first through hole and the electrical connector 3 are interference-fitted, the size of the first through hole must be smaller than the size of the electrical connector 3. For example, the electrical connector 3 is a busbar. The cross-section of the electrical connector 3 is usually set to square. In this case, the length difference between the electrical connector 3 and the first through hole can be set to 0.5 mm, and the width difference between the electrical connector 3 and the first through hole can be set to 0.5 mm. For example, the electrical connector 3 is a cable. The cross-section of the electrical connector 3 is usually set to circular. In this case, the difference between the diameter of the electrical connector 3 and the diameter of the first through hole can be set to 2 mm.

[0050] It should be noted that the value of the dimensional difference δ1 between the first through hole and the electrical connector 3 is positively correlated with the size of the electrical connector 3 itself. For example, the longer the electrical connector 3 is, the greater the length difference between the first through hole and the electrical connector 3 can be. The value of the dimensional difference δ1 between the first through hole and the electrical connector 3 is related to the rigidity of the main body 11. For example, the softer the main body 11 is, the greater the length difference between the first through hole and the electrical connector 3 can be.

[0051] like Figure 1 As shown, in some embodiments, the baffle 1 further includes a connecting portion 13. The connecting portion 13 is located on the side of the main body 11 where the adhesive layer 12 is provided. The connecting portion 13 is circumferentially disposed around the first through hole. The connecting portion 13 is configured to allow the power supply connector 3 to pass through.

[0052] Understandably, the connecting part 13 can further increase the connection area between the baffle 1 and the electrical connector 3, thereby increasing the sealing area between them and ensuring a reliable seal. The connecting part 13 is located on the side of the main body 11 where the adhesive layer 12 is provided. The connecting part 13 can pass through the second through hole of the upper cover 21, allowing it to be inserted into the upper cover 21. When the connecting part 13 is inserted into the second through hole of the upper cover 21, the adhesive layer 12 adheres precisely to the surface of the upper cover 21. Therefore, the connecting part 13 also enables rapid positioning and installation of the baffle 1.

[0053] Since the connecting portion 13 is annularly disposed in the first through hole, the connecting portion 13 is configured as an annular ring. When the first through hole is a circular hole, the connecting portion 13 is configured as an annular ring. When the first through hole is a square hole, the connecting portion 13 is configured as a square ring.

[0054] In some embodiments, the connecting portion 13 is integrally formed with the main body portion 11. For example, the connecting portion 13 and the main body portion 11 are integrally injection molded. Alternatively, the connecting portion 13 and the main body portion 11 are compression molded.

[0055] In some embodiments, the connecting portion 13 is interference-fitted with the electrical connector 3.

[0056] Understandably, based on the interference fit between the connecting part 13 and the electrical connector 3, the size of the inner ring of the connecting part 13 is smaller than the size of the electrical connector 3. When the electrical connector 3 passes through the connecting part 13, the outer surface of the electrical connector 3 can form a tight fit with the inner surface of the connecting part 13, thereby ensuring a reliable seal between the connecting part 13 and the electrical connector 3. No glue leakage gap will be generated between the inner ring of the connecting part 13 and the outer surface of the electrical connector 3, preventing glue leakage and avoiding the intrusion of expanding foam into the electrical compartment.

[0057] It should be noted that the connection part 13 can extend the sealing length between the baffle 1 and the electrical connector 3 and increase the sealing area between the baffle 1 and the electrical connector 3, thereby improving the sealing effect between the baffle 1 and the electrical connector 3.

[0058] In some embodiments, the connecting portion 13 passes through the second through hole of the upper cover 21. An interference fit, a transition fit, or a clearance fit may be used between the connecting portion 13 and the second through hole of the upper cover 21. In this embodiment, the connecting portion 13 and the second through hole of the upper cover 21 are in a clearance fit.

[0059] In some embodiments, the length of the connecting portion 13 is the same as the depth of the second through hole in the upper cover 21. Alternatively, the length of the connecting portion 13 is greater than the depth of the second through hole. For example, the connecting portion 13 can be 1 mm, 2 mm, or 3 mm.

[0060] For example, electrical connector 3 is a busbar. The cross-section of electrical connector 3 is usually square. In this case, the connecting part 13 is set as a square frame structure. The length of electrical connector 3 is slightly greater than the length of the inner ring of connecting part 13, and the width of electrical connector 3 is slightly greater than the width of the inner ring of connecting part 13.

[0061] For example, electrical connector 3 is a cable. The cross-section of electrical connector 3 is usually set to be circular. In this case, the diameter of electrical connector 3 is slightly larger than the inner diameter of the connecting part 13.

[0062] In some embodiments, the dimensional difference between the inner ring of the connecting portion 13 and the electrical connector 3 is δ2, satisfying: 0.5 mm ≤ δ2 ≤ 5 mm.

[0063] It is understandable that the size difference δ2 between the inner ring of the connecting part 13 and the electrical connector 3 is set in the range of 0.5 mm to 5 mm, so that the connecting part 13 and the electrical connector 3 can achieve a good sealing connection, and facilitate the insertion of the electrical connector 3, so as to ensure the rapid assembly of the electrical connector 3 and the baffle plate 1.

[0064] When the dimensional difference between the inner ring of the connecting part 13 and the electrical connector 3 is less than 0.5 mm, the deformation effect of the connecting part 13 during assembly may be insignificant, resulting in poor fit between the connecting part 13 and the electrical connector 3 and poor sealing performance. When the dimensional difference between the inner ring of the connecting part 13 and the electrical connector 3 is less than 0.5 mm, the connecting part 13 and the electrical connector 3 may also fail to form an interference fit due to manufacturing tolerances, resulting in poor sealing performance. When the dimensional difference between the inner ring of the connecting part 13 and the electrical connector 3 is greater than 5 mm, the electrical connector 3 may be difficult to insert into the inner ring of the connecting part 13, making assembly between the electrical connector 3 and the connecting part 13 inconvenient and inefficient. In this case, the assembly rate of the baffle 1 may be less than the foaming rate of the foam, causing the foam to overflow into the electrical compartment.

[0065] For example, the size difference δ2 between the inner ring of the connecting part 13 and the electrical connector 3 is set to 0.5 mm, 1 mm, 2 mm, 3 mm, 4 mm, 5 mm, or any value between the two.

[0066] It should be noted that since the inner ring of the connecting part 13 and the electrical connector 3 are interference-fitted, the size of the inner ring of the connecting part 13 must be smaller than the size of the electrical connector 3. For example, the electrical connector 3 is a busbar. The cross-section of the electrical connector 3 is usually set to square. In this case, the length difference between the electrical connector 3 and the inner ring of the connecting part 13 can be set to 1 mm, and the width difference between the electrical connector 3 and the inner ring of the connecting part 13 can be set to 1 mm. For example, the electrical connector 3 is a cable. The cross-section of the electrical connector 3 is usually set to circular. In this case, the difference between the diameter of the electrical connector 3 and the aperture of the inner ring of the connecting part 13 can be set to 3 mm.

[0067] It should be noted that the value of the dimensional difference δ2 between the inner ring of the connecting portion 13 and the electrical connector 3 is positively correlated with the size of the electrical connector 3 itself. For example, the longer the electrical connector 3, the greater the length difference between the inner ring of the connecting portion 13 and the electrical connector 3 can be. The value of the dimensional difference δ2 between the inner ring of the connecting portion 13 and the electrical connector 3 is related to the rigidity of the connecting portion 13. For example, the more flexible the connecting portion 13, the greater the length difference between the inner ring of the connecting portion 13 and the electrical connector 3 can be.

[0068] In some embodiments, the baffle 1 is a flexible baffle 1.

[0069] It is understandable that, based on the fact that the baffle 1 is a flexible baffle 1, when the electrical connector 3 passes through the inner ring of the first through hole and the connecting part 13, the main body 11 and the connecting part 13 can deform to ensure that the electrical connector 3 can pass through the inner ring of the first through hole and the connecting part 13, and that the outer surface of the electrical connector 3 is tightly fitted with the inner surface of the first through hole and the inner surface of the inner ring of the connecting part 13, so as to ensure a reliable seal between the baffle 1 and the electrical connector 3 and prevent adhesive from overflowing from the connection between the two.

[0070] For example, the baffle 1 is made of soft materials such as silicone or PU (Polyurethane).

[0071] like Figure 4 As shown in the illustration, this application also provides a battery pack. The battery pack includes a battery case 2, an electrical connector 3, and a retaining film 1 as described in the previous embodiments. The battery case 2 has a top cover 21. The top cover 21 has a second through hole. An adhesive layer 12 is bonded to the top cover 21, and the first through hole communicates with the second through hole. The electrical connector 3 passes through the first through hole and the second through hole.

[0072] In this embodiment, the electrical connector 3 passes through the first through hole on the main body 11. When the baffle 1 needs to be installed on the upper cover 21, it can be bonded to the upper cover 21 using an adhesive layer, replacing the bolt-locking method. This improves the installation efficiency of the baffle 1 and prevents adhesive overflow due to delayed installation. The adhesive method of fixing the baffle 1 to the upper cover 21 also avoids bolts and other fasteners falling into the electrical compartment and causing a short circuit in the battery pack, thus reducing safety hazards.

[0073] After the main body 11 is bonded to the top cover 21 by the adhesive layer 12, the first through hole of the main body 11 is connected to the second through hole of the top cover 21 so that the electrical connector 3 can pass through the first through hole and the second through hole, ensuring that the electrical connector 3 can pass from the battery compartment of the battery box 2 into the electrical compartment of the battery box 2.

[0074] In some embodiments, the baffle 1 includes a connecting portion 13, which is located on the side of the main body 11 where the adhesive layer 12 is provided. The connecting portion 13 passes through the second through hole.

[0075] Understandably, the connecting part 13 can further increase the connection area between the baffle 1 and the electrical connector 3, thereby increasing the sealing area between them and ensuring a reliable seal. The connecting part 13 is located on the side of the main body 11 where the adhesive layer 12 is provided. The connecting part 13 can pass through the second through hole of the upper cover 21, allowing it to be inserted into the upper cover 21. When the connecting part 13 is inserted into the second through hole of the upper cover 21, the adhesive layer 12 adheres precisely to the surface of the upper cover 21. Therefore, the connecting part 13 also enables rapid positioning and installation of the baffle 1.

[0076] In some embodiments, the connecting portion 13 is clearance-fitted with the second through hole. Since the baffle 1 and the upper cover 21 are bonded together by the adhesive layer 12, the sealing area between the baffle 1 and the upper cover 21 is the bonding area between the adhesive layer and the upper cover 21. Therefore, the baffle 1 does not need to form a sealed connection with the second through hole through the connecting portion 13. Based on the clearance fit between the connecting portion 13 and the second through hole in this embodiment, rapid positioning and installation between the connecting portion 13 and the second through hole can be achieved, ensuring efficient assembly between the baffle 1 and the upper cover 21.

[0077] In some embodiments, the battery compartment 2 stores a battery module. The main body 11 is bonded to the side of the top cover 21 facing the battery module by an adhesive layer 12.

[0078] It is understandable that since the main body 11 is bonded to the side of the top cover 21 facing the battery module through the adhesive layer 12, when the battery box 2 is filled with foam and foaming is performed, the foam overflows to the upper surface of the top cover 21 and can also squeeze the baffle 1, making the bond between the baffle 1 and the top cover 21 more reliable, and further ensuring the reliability of the sealing baffle.

[0079] The embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A protective film applied to a battery box, the battery box including a top cover, characterized in that, The baffle sheet includes: The main body has a first through hole, which is configured for a power supply connector to pass through. An adhesive layer is provided on the main body portion, and the adhesive layer is configured to adhere the upper cover.

2. The baffle sheet according to claim 1, characterized in that, The first through hole is interference-fitted with the electrical connector.

3. The baffle sheet according to claim 2, characterized in that, The dimensional difference between the first through hole and the electrical connector is δ1, which satisfies the following condition: 0.5 mm ≤ δ1 ≤ 5 mm.

4. The baffle sheet according to claim 1, characterized in that, The baffle sheet also includes: A connecting portion is located on the side of the main body where the adhesive layer is provided. The connecting portion is circumferentially disposed around the first through hole and is configured to allow the electrical connector to pass through.

5. The baffle sheet according to claim 4, characterized in that, The connecting part is interference-fitted with the electrical connector.

6. The baffle sheet according to claim 5, characterized in that, The dimensional difference between the inner ring of the connecting part and the electrical connector is δ2, which satisfies the following condition: 0.5 mm ≤ δ2 ≤ 5 mm.

7. The baffle sheet according to any one of claims 1-6, characterized in that, The baffle is a flexible baffle.

8. A battery pack, characterized in that, include: The protective sheet as described in any one of claims 1-7; A battery box has a top cover with a second through hole, an adhesive layer is bonded to the top cover, and the first through hole is connected to the second through hole; An electrical connector is provided through the first through hole and the second through hole.

9. The battery pack according to claim 8, characterized in that, The baffle includes a connecting portion located on the side of the main body where the adhesive layer is provided, wherein the connecting portion passes through the second through hole.

10. The battery pack according to claim 8, characterized in that, The battery box contains a battery module, and the main body is bonded to the side of the top cover facing the battery module by the adhesive layer.

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