Insulation structure and battery pack

Abstract

The utility model provides a kind of insulation structure and battery pack, and the insulation structure includes main body. Among them, at least two adjacent sides of the main body are provided with bending part, and one of the adjacent two bending parts is provided with splicing part, and the other is provided with splicing cooperation part, and the adjacent two bending parts are connected by the splicing part and the splicing cooperation part. The insulation structure and battery pack of the utility model improve the technical problem that the structure of insulating sheet is unreliable.

Description

Technical Field

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

[0002] In related technologies, insulating sheets are required to insulate the end plate of the battery module from the battery cell. However, the bent parts of the insulating sheets in these technologies are prone to warping, resulting in an unreliable structure that fails to meet the insulation requirements between the battery cell and the end plate. Utility Model Content

[0003] The embodiments of this utility model provide an insulation structure and a battery pack, which can improve the technical problem of unreliable insulation sheet structure.

[0004] In a first aspect, embodiments of the present invention provide an insulating structure, comprising:

[0005] The main body has at least two adjacent sides with bent portions, and one of the two adjacent bent portions has a plug-in portion and the other has a plug-in mating portion. The two adjacent bent portions are connected through the plug-in portion and the plug-in mating portion. This arrangement enables a more reliable connection between the two adjacent bent portions and improves the reliability of the insulation structure.

[0006] In some embodiments, the insertion portion includes an insertion hole or an insertion slot; this configuration provides multiple structural options for the insertion portion and optimizes the connection method between two adjacent bending portions; and / or,

[0007] The insertion mating part includes an insertion piece; this arrangement allows the insertion mating part to better match the insertion hole or the insertion groove, while also ensuring the structural strength between two adjacent bending parts.

[0008] In some embodiments, the insertion hole or the insertion slot extends along the bend in a direction away from the main body; this arrangement facilitates both the processing of the insertion hole or the insertion slot and the assembly of the insulating structure.

[0009] In some embodiments, among two adjacent bends, the bend with the insertion portion is a insertion bend, and the bend with the insertion mating portion is a mating bend. The insertion mating portion at least partially covers the end of the insertion bend from the side away from the main body, so that the insertion mating portion is inserted into the insertion portion from the side away from the main body. This configuration can lock two adjacent bends together through the insertion portion and the insertion mating portion, while also preventing the insertion mating portion or the bend from warping.

[0010] In some embodiments, among two adjacent bends, the bend with the insertion portion is a insertion bend, and the bend with the insertion mating portion is a mating bend. The insertion mating portion at least partially covers the end of the insertion bend from the side of the insertion bend closest to the main body, so that the insertion mating portion is inserted into the insertion portion from the side closest to the main body. This configuration not only prevents the insertion mating portion or the bend from warping, but also provides more options for the assembly method between the insertion mating portion and the insertion portion.

[0011] In some embodiments, the insulation structure further includes an adhesive component, which is at least partially disposed on the mating portion to adhesively fix the mating portion to the bend where the mating portion is disposed; this arrangement makes the connection between two adjacent bends more reliable.

[0012] In some embodiments, the adhesive assembly includes a first adhesive member and a second adhesive member;

[0013] The first adhesive is bonded to the side of the bent portion away from the main body to fix the insertion part to the bent portion where the insertion part is provided;

[0014] The second adhesive is bonded to the side of the bent portion near the main body to fix the plug-in mating portion to the bent portion where the plug-in portion is provided; this arrangement can fix different parts of the plug-in mating portion to the bent portion where the plug-in portion is provided, thereby enhancing the reliability of the connection.

[0015] In some embodiments, the bending portion includes a first bending portion, a second bending portion, and a third bending portion;

[0016] The first, second, and third bends are arranged sequentially along the outer periphery of the main body, and all three bends are bent toward the same side of the main body to form an accommodating cavity. This arrangement improves the structural strength of the insulation structure. Furthermore, adjacent bends are connected by the insertion fitting, the insertion part, and the adhesive assembly, which disperses the stress between them and improves the reliability of the overall structure.

[0017] In some embodiments, the adhesive assembly further includes:

[0018] A third adhesive element is disposed on a first side of the main body; this arrangement allows the insulating structure to be fixed to a structure (such as a battery cell) connected to the insulating structure, enhancing the reliability of the connection; and / or,

[0019] A fourth adhesive is disposed on the second side of the main body opposite to the first side; this arrangement can fix the insulating structure to a structure (such as an end plate) connected to the insulating structure, thereby enhancing the reliability of the connection.

[0020] In some embodiments, the body and the bent portion are integrally formed; this configuration simplifies the manufacturing process and enhances the reliability of the connection between the body and the bent portion; and / or,

[0021] Both the main body and the bent portion include at least one of polycarbonate sheet, polyvinyl fluoride sheet, ethylene-vinyl acetate sheet, and mica sheet; this configuration provides multiple options for the manufacturing of the main body and the bent portion, allowing different materials to be selected according to different application environments, thus enabling the insulation structure to adapt to more scenarios; and / or,

[0022] The adhesive component includes at least one of acrylic foam tape, polyurethane tape, and polyvinyl chloride double-sided tape; this configuration provides multiple options for the selection of the adhesive component, allowing the use of adhesive components made of different materials according to different application environments, thus enabling the insulation structure to adapt to more scenarios.

[0023] Secondly, embodiments of this utility model provide a battery pack, which includes a battery cell, an end plate, and an insulating structure. The insulating structure is the aforementioned insulating structure, with its main body located between the battery cell and the end plate. The bent portion of the insulating structure covers at least a portion of the outer peripheral sidewall of the battery cell. This arrangement enables the insulating structure to effectively electrically isolate the end plate and the battery cell, thereby enhancing the reliability of the battery pack.

[0024] In embodiments of this invention, the bent portion of the insulating structure covers at least a portion of the outer peripheral sidewall of the battery cell, effectively isolating the battery cell from structures such as the end plate, thereby providing reliable insulation protection and ensuring the normal operation of the battery pack. The main body is located between the battery cell and the end plate, further enhancing the insulation performance between them, ensuring electrical isolation, and improving the overall safety and stability of the battery pack. Adjacent bent portions are connected by a plug-in portion and a plug-in mating portion. This plug-in connection method not only facilitates the assembly of the insulating structure but also effectively fixes adjacent bent portions, preventing them from warping. Connecting adjacent bent portions through the plug-in portion and plug-in mating portion allows the insulating structure to form a relatively stable whole, making the overall structure of the insulating structure more reliable. When the battery pack is subjected to external forces such as vibration and impact during use, this stable structure can better protect the battery cell and extend the battery pack's service life. Attached Figure Description

[0025] 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.

[0026] Figure 1 This is a perspective view of the battery pack provided in an embodiment of the present invention;

[0027] Figure 2 This is a three-dimensional schematic diagram of the insulation structure provided in an embodiment of the present invention from a first-view perspective;

[0028] Figure 3 This is a three-dimensional schematic diagram of the insulation structure provided in an embodiment of the present invention from a second perspective;

[0029] Figure 4 This is an exploded view of the insulation structure provided in an embodiment of this utility model;

[0030] Figure 5 This is a schematic diagram of the unfolded main body (when the insertion part is an insertion hole) provided in an embodiment of this utility model;

[0031] Figure 6 This is a schematic diagram of the unfolded main body (when the insertion part is an insertion slot) provided in an embodiment of this utility model;

[0032] Figure 7 This is a schematic diagram of the insulation structure (when the mating part is inserted into the mating part from the side away from the main body) provided by an embodiment of the present utility model;

[0033] Figure 8 for Figure 7 Enlarged view of section A;

[0034] Figure 9 This is a schematic diagram of the insulation structure (when the mating part is inserted into the mating part from the side closest to the main body) provided by an embodiment of this utility model;

[0035] Figure 10 for Figure 9 Enlarged view of section B.

[0036] 100. Insulation structure; 10. Main body; 11. Bending part; 111. First bending part; 1111. Mating bending part; 1112. Insertion mating part; 11121. Insertion piece; 112. Second bending part; 1121. Insertion bending part; 11211. End; 1122. Insertion part; 11221. Insertion hole; 11222. Insertion groove; 113. Third bending part; 12. First side; 13. Second side; 20. Adhesive assembly; 21. First adhesive component; 22. Second adhesive component; 23. Third adhesive component; 24. Fourth adhesive component; 30. Receiving cavity; 40. Bending line; 200. Battery pack; 210. Battery cell; 220. End plate. Detailed Implementation

[0037] 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.

[0038] As mentioned in the background section, in related technologies, insulating sheets are required to isolate the battery module from the battery cell. However, the bent parts of the insulating sheets in related technologies are prone to warping (i.e., the bent parts warp under stress), resulting in unreliable insulation sheet structure that cannot meet the insulation requirements between the battery cell and the end plate.

[0039] To address the problems existing in the relevant technologies, see [link to relevant documentation]. Figures 1 to 3As shown, this application provides a battery pack 200, which includes a battery cell 210, an end plate 220, and an insulation structure 100. The insulation structure 100 includes a main body 10, on which at least two adjacent sides are provided with bent portions 11. One of the two adjacent bent portions 11 is provided with a plug-in portion 1122, and the other is provided with a plug-in mating portion 1112. The two adjacent bent portions 11 are connected through the plug-in portion 1122 and the plug-in mating portion 1112. The main body 10 of the insulation structure 100 is located between the battery cell 210 and the end plate 220, and the bent portions 11 of the insulation structure 100 cover at least a portion of the outer peripheral sidewall of the battery cell 210.

[0040] In this application, the bent portion 11 of the insulating structure 100 covers at least a portion of the outer peripheral sidewall of the cell 210, effectively isolating the cell 210 from structures such as the end plate 220, thereby providing reliable insulation protection and ensuring the normal operation of the battery pack 200. The main body 10 is located between the cell 210 and the end plate 220, further enhancing the insulation performance between the cell 210 and the end plate 220, ensuring electrical isolation between the cell 210 and the end plate 220, and improving the overall safety and stability of the battery pack 200. Two adjacent bent portions 11 are connected by a plug-in portion 1122 and a plug-in mating portion 1112. This plug-in connection method not only facilitates the assembly of the insulating structure 100, but also effectively fixes the two adjacent bent portions 11, preventing the bent portions 11 from warping. By connecting adjacent bent portions 11 through the insertion portion 1122 and the insertion mating portion 1112, the insulation structure 100 can form a relatively stable whole, thereby making the overall structure of the insulation structure 100 more reliable. When the battery pack 200 is subjected to external forces such as vibration and impact during use, this stable structure can better protect the battery cell 210 and extend the service life of the battery pack 200.

[0041] In other words, compared with existing insulating sheets, the insulating structure 100 of this application can reliably fix the adjacent bending portions 11 by providing interlocking portions 1122 and interlocking portions 1112 that can cooperate with each other on two adjacent bending portions 11, thereby preventing the bending portions 11 from warping and making the overall structure of the insulating structure 100 more reliable.

[0042] In some embodiments, see Figure 5 and Figure 6As shown, the plug portion 1122 includes a plug hole 11221 or a plug groove 11222. Specifically, the plug portion 1122 includes a plug hole 11221 or a plug groove 11222, which provides multiple options for connecting adjacent bends 11 on the insulation structure 100. When the plug portion 1122 is a plug hole 11221, in order to make the connection between the plug portion 1122 and the plug mating portion 1112 more reliable, the dimensions of the plug hole 11221 and the plug mating portion 1112 should be matched as much as possible. That is, the dimensional error between the plug hole 11221 and the plug mating portion 1112 should be minimized as much as possible, thereby preventing the plug mating portion 1112 from slipping out of the plug hole 11221 and improving the reliability of the connection between the plug portion 1122 and the plug mating portion 1112. Compared to the insertion slot 11222, the insertion hole 11221 weakens the structural strength of the insulation structure 100 by a relatively small amount. Therefore, when the insertion hole 11221 and the insertion mating part 1112 are connected, the overall structure of the insulation structure 100 becomes more reliable, thereby continuously providing reliable insulation protection for the battery cell 210. When the insertion part 1122 is the insertion slot 11222, compared to the insertion hole 11221, the insertion slot 11222 allows the insertion mating part 1112 to be quickly inserted, achieving rapid assembly. In actual manufacturing of the insertion part 1122 of this application, the insertion part 1122 can be set as either the insertion hole 11221 or the insertion slot 11222. That is to say, the specific structure of the insertion part 1122 can be reasonably selected according to the actual situation and needs, and this application does not impose specific limitations.

[0043] Optionally, the mating part 1112 includes a mating tab 11121. Specifically, the mating tab 11121 mates with the mating part 1122 (such as a mating hole 11221 or a mating groove 11222), greatly simplifying the connection process of adjacent bent parts 11 on the insulation structure 100. During the actual assembly of the insulation structure 100, the operator can quickly insert the mating tab 11121 into the corresponding mating hole 11221 or mating groove 11222 to achieve rapid connection of adjacent bent parts 11. At the same time, the mating tab 11121 and the mating hole 11221 or mating groove 11222 can form a tight fit. When the mating tab 11121 is inserted into the mating hole 11221 or mating groove 11222, the mating tab 11121 can fit against the bent part 11 with the mating hole 11221 or mating groove 11222. This not only provides a more reliable connection for adjacent bends 11, but also provides a larger contact area, dispersing the stress borne by the connection, thereby improving the service life of the insulation structure 100.

[0044] In some embodiments, see Figure 5 and Figure 6As shown, the insertion hole 11221 or insertion slot 11222 extends along the bending portion 11 in the direction away from the main body 10. Specifically, the insertion hole 11221 or insertion slot 11222 extends along the bending portion 11 in the direction away from the main body 10, so that the insertion hole 11221 or insertion slot 11222 can better fit with the insertion piece 11121. In this way, the operator can quickly assemble the insulation structure 100. Moreover, because the insertion hole 11221 or insertion slot 11222 extends along the bending portion 11 in the direction away from the main body 10, after the insulation structure 100 is assembled, the insertion piece 11121 is less likely to slip out of the insertion hole 11221 or insertion slot 11222, which makes the overall structure of the assembled insulation structure 100 more reliable.

[0045] In some embodiments, see Figure 1 , Figure 5 , Figure 7 as well as Figure 8 As shown, among two adjacent bends 11, the bend 11 with the insertion part 1122 is the insertion bend 1121, and the bend 11 with the insertion mating part 1112 is the mating bend 1111. The insertion mating part 1112 at least partially covers the end 11211 of the insertion bend 1121 from the side of the insertion bend 1121 away from the main body 10, so that the insertion mating part 1112 is inserted into the insertion part 1122 from the side away from the main body 10.

[0046] Specifically, the mating portion 1112 at least partially covers the end 11211 of the bend 1121 from the side of the bend 1121 away from the main body 10. This design enhances the structural strength of the connection (i.e., the bend 1122 and the mating portion 1112). When the battery pack 200 is subjected to external forces, such as vibration or impact, the mating portion 1112 can disperse the stress borne by the end, preventing stress concentration at the bend (i.e., the connection between the bend 1122 and the mating portion 1112) from causing loosening or damage to the connection. At the same time, this covering connection can effectively resist the external forces generated by vibration, ensuring the connection of the insulation structure 100 is stable and continuously providing reliable insulation protection for the cell 210. The mating part 1112 is inserted into the plug-in part 1122 from the side of the plug-in bend 1121 away from the main body 10 and covers the end 11211, so that the mating part 1112 locks the plug-in bend 1121, which greatly increases the difficulty of the plug-in part 1122 accidentally dislodging. Even under complex external force environments, the mating part 1112 can tightly hold the end 11211 of the plug-in bend 1121, ensuring the reliability of the connection and preventing the integrity and insulation performance of the insulation structure 100 from being affected by the dislodging of the plug-in part 1122. In addition, as Figure 8As shown, a portion of the insertion fitting part 1112 bends from the side of the insertion bending part 1121 away from the main body 10 toward the insertion bending part 1121 and covers the end 11211. Another portion of the insertion fitting part 1112 passes through the insertion part 1122, and that portion of the insertion fitting part 1112 that passes through the insertion part 1122 bends toward the side of the insertion bending part 1121 where the insertion part 1122 is located, closer to the main body 10, so that the insertion fitting part... When the insertion bend 1112 is fitted with the insertion bend 1121, after the insulation structure 100 is installed on the battery pack 200, part of the outer peripheral sidewall of the cell 210 can press the part of the insertion mating portion 1112 that passes through the insertion portion 1122 against the insertion bend 1121, so that the insertion mating portion 1112 and the insertion bend 1121 fit more tightly, thereby preventing the insertion bend 1121 and the mating bend 1111 from lifting.

[0047] In some embodiments, see Figure 1 , Figure 5 , Figure 9 as well as Figure 10 As shown, among two adjacent bends 11, the bend 11 with the insertion part 1122 is the insertion bend 1121, and the bend 11 with the insertion mating part 1112 is the mating bend 1111. The insertion mating part 1112 at least partially covers the end 11211 of the insertion bend 1121 from the side of the insertion bend 1121 near the main body 10, so that the insertion mating part 1112 is inserted into the insertion part 1122 from the side of the insertion bend 1121 near the main body 10.

[0048] Specifically, the mating portion 1112 at least partially covers the end 11211 of the bend 1121 from the side of the bend 1121 closest to the main body 10. The mating portion 1112 is inserted into the bend 1122 from this side, providing strong support for the connection. During operation of the battery pack 200, it may be subjected to various external forces, such as vibration and impact. In this case, this covering connection can effectively disperse stress and prevent stress concentration at the connection point (i.e., the connection between the bend 1122 and the mating portion 1112). This prevents the connection between the bend 1122 and the mating portion 1112 from loosening due to stress concentration. At the same time, the covering connection of the mating portion 1112 from the side of the bend 1121 closest to the main body 10 ensures a firm connection of the insulation structure 100, thereby avoiding affecting the insulation protection of the battery cell 210 by the insulation structure 100. The insertion portion 1112 is inserted from the side near the main body 10 and covers the end 11211 of the bend 1121, so that the mating portion 1112 and the bend 1121 are tightly engaged, greatly increasing the resistance to accidental disengagement of the mating portion 1122. Even under some extreme external force conditions, the mating portion 1112 can tightly lock the end 11211 of the bend 1121, maintaining the reliability of the connection, ensuring the integrity of the insulation structure 100, and thus ensuring that the insulation performance of the cell 210 is not affected. In addition, as Figure 10 As shown, a portion of the insertion fitting part 1112 bends from the side of the insertion bending part 1121 near the main body 10 toward the insertion bending part 1121 and covers the end 11211. Another portion of the insertion fitting part 1112 passes through the insertion part 1122, and that portion of the insertion fitting part 1112 that passes through the insertion part 1122 bends toward the side of the insertion bending part 1121 where the insertion part 1122 is located, away from the main body 10, so that the insertion fitting part 1112 and... When the insertion bend 1121 is fitted, after the insulation structure 100 is installed on the battery pack 200, part of the outer peripheral sidewall of the cell 210 can press the part of the insertion mating part 1112 covering the side of the insertion bend 1121 near the main body 10 against the insertion bend 1121, so that the insertion mating part 1112 and the insertion bend 1121 fit more tightly, thereby preventing the insertion bend 1121 and the mating bend 1111 from lifting.

[0049] In some embodiments, see Figures 2 to 4 As shown, the insulation structure 100 also includes an adhesive component 20, which is at least partially disposed on the insertion mating portion 1112 to adhesively fix the insertion mating portion 1112 to the bending portion 11 provided with the insertion portion 1122.

[0050] Specifically, in the insulation structure 100, the adhesive component 20 is at least partially disposed between the plug-in mating portion 1112 and the bent portion 11 (i.e., the plug-in bent portion 1121) where the plug-in portion 1122 is provided, adding adhesive fixation to the original plug-in connection, forming a double fixing mechanism. During normal operation of the battery pack 200, the plug-in connection between the plug-in mating portion 1112 and the plug-in portion 1122 provides initial structural support for the insulation structure 100, while the adhesive component 20 further strengthens the connection between the two. The adhesive component 20 prevents the plug-in portion from gradually loosening due to long-term vibration, ensuring the reliability of the connection. Simultaneously, the adhesive action of the adhesive component 20 further prevents the plug-in mating portion 1112 from warping, thereby further improving the overall structural reliability of the insulation structure 100. When the battery pack 200 encounters complex and strong external forces, such as collisions during transportation or significant impacts under certain special operating conditions, the advantages of the double fixing become even more apparent. The adhesive component 20 can effectively disperse external forces and prevent stress concentration at the plug joint from causing connection failure. The adhesive component 20 works in conjunction with the plug structure (i.e., the mating structure of the plug mating part 1112 and the plug part 1122) to jointly resist external forces, so that the insulation structure 100 can remain stable under various harsh conditions and continuously provide reliable insulation protection for the cell 210.

[0051] In some embodiments, see Figure 4 , Figure 8 as well as Figure 10 As shown, the adhesive assembly 20 includes a first adhesive member 21 and a second adhesive member 22; the first adhesive member 21 is bonded to the side of the bent portion 11 away from the main body 10 to fix the insertion mating portion 1112 to the bent portion 11 where the insertion portion 1122 is provided; the second adhesive member 22 is bonded to the side of the bent portion 11 close to the main body 10 to fix the insertion mating portion 1112 to the bent portion 11 where the insertion portion 1122 is provided.

[0052] Specifically, the first adhesive member 21 and the second adhesive member 22 are respectively bonded to the side of the bent portion 11 away from the main body 10 and the side close to the main body 10, fixing the insertion mating portion 1112 to the bent portion 11 (i.e., the insertion bent portion 1121) provided with the insertion portion 1122. This double-sided fixing method can apply adhesive force to the connection part from two directions, greatly enhancing the stability of the connection. During the operation of the battery pack 200, whether subjected to external vibrations, impacts, or slight stress changes caused by the operation of the internal cells 210, the double-sided adhesive fixing can effectively resist these external forces and prevent loosening between the insertion mating portion 1112 and the insertion portion 1122. For example, during the driving of an electric vehicle, the battery pack 200 will experience complex vibrations caused by different road conditions. The double-sided adhesive fixing can ensure that the connection part of the insulation structure 100 remains stable at all times, providing continuous and reliable insulation protection for the cells 210. By bonding on both sides of the bent portion 11, the stress borne by the connection part can be distributed more evenly. When the battery pack 200 is subjected to external force, the stress will not concentrate on one side, but will be shared by the first adhesive member 21 and the second adhesive member 22. This avoids adhesive failure or damage to the plug-in structure due to stress concentration, further improving the reliability and stability of the connection. At the same time, through the adhesive action of the first adhesive member 21 and the second adhesive member 22, the two parts of the plug-in mating part 1112 (i.e., the two parts of the plug-in mating part 1112 facing away from the main body 10 and the two parts of the plug-in mating part 1112 close to the main body 10) can be effectively prevented from warping relative to the plug-in bending part 1121.

[0053] Understandably, to prevent the first adhesive component 21 and the second adhesive component 22 from falling off, the areas on the insulation structure 100 where the first adhesive component 21 or the second adhesive component 22 needs to be bonded can be pre-treated with degreasing, polishing, and other surface treatments. Furthermore, after the first adhesive component 21 and the second adhesive component 22 are bonded, the areas with the first adhesive component 21 or the second adhesive component 22 can be held under a certain pressure for a sufficient time, thereby improving the bonding effect of the first adhesive component 21 and the second adhesive component 22 and making them less likely to fall off.

[0054] In some embodiments, see Figure 1 , Figures 4 to 10 As shown, the bending portion 11 includes a first bending portion 111, a second bending portion 112, and a third bending portion 113; the first bending portion 111, the second bending portion 112, and the third bending portion 113 are arranged sequentially along the outer periphery of the main body 10, and the first bending portion 111, the second bending portion 112, and the third bending portion 113 are all bent toward the same side of the main body 10 to form an accommodating cavity 30.

[0055] Specifically, the first bend 111, the second bend 112, and the third bend 113 are sequentially arranged along the outer periphery of the main body 10 and all bend towards the same side to form a receiving cavity 30, which can comprehensively wrap the battery cell 210. This wrapping structure provides protection for the battery cell 210 from multiple directions, effectively reducing the impact of external factors on the battery cell 210. When the battery pack 200 is impacted or squeezed, the bend 11 can buffer some of the external force, reducing the risk of damage to the battery cell 210 and ensuring the safety and stability of the battery cell 210. The presence of the receiving cavity 30 provides a precise positioning space for the battery cell 210. The battery cell 210 is placed in the receiving cavity 30, and its position is clearly defined, preventing displacement within the battery pack 200. It also plays a certain positioning role for the insulation structure 100, preventing the insulation structure 100 from moving relative to the battery cell 210 and the end plate 220. During the operation of the battery pack 200, the stable positioning of the battery cell 210 helps maintain the structural stability inside the battery pack 200. It also helps maintain the correct relative position between the battery cell 210 and other components (such as the end plate 220), ensuring that the electrical connection and overall performance of the battery pack 200 are not affected. The three bends 11 together form a receiving cavity 30, making the insulation structure 100 a relatively stable frame structure. This frame structure has high strength and rigidity, and can better resist external pressure and deformation. Furthermore, the arrangement of the first bend 111, the second bend 112, and the third bend 113 along the outer periphery of the main body 10 can be reasonably adjusted according to actual conditions and needs; this application does not impose specific limitations. This embodiment shows the first bend 111, the second bend 112, and the third bend 113 in a clockwise direction along the outer periphery of the main body 10 (i.e.,...). Figures 5 to 7 , Figure 9 The directions indicated by 'a' in the diagram are arranged sequentially. Furthermore, the positions of the insertion parts 1122 and the insertion mating parts 1112 can be reasonably adjusted according to actual conditions and needs; this application does not impose specific limitations. This embodiment shows a case where the first bent part 111 and the third bent part 113 are both provided with insertion mating parts 1112 near the ends of the second bent part 112, and the second bent part 112 is provided with insertion parts 1122 at both ends.

[0056] It is understandable that, in order to enable the bent part 11 to bend better relative to the main body and the plug-in mating part 1112 to bend better relative to the bent part 11, a bending line 40 can be pre-set at the bending point. The setting of the bending line 40 can not only enable both the bent part 11 and the plug-in mating part 1112 to bend better, but also reduce the stress at the bending point, making the overall structure of the assembled insulation structure 100 more stable and less prone to deformation.

[0057] In some embodiments, see Figures 1 to 3As shown, the bonding assembly 20 also includes a third adhesive member 23, which is disposed on the first side 12 of the main body 10. Specifically, the first side 12 is the side of the main body 10 closest to the battery cell 210, and the third adhesive member 23, disposed on the first side 12, can effectively bond the insulation structure 100 and the battery cell 210, thereby preventing the insulation structure 100 from moving relative to the battery cell 210, and also making the overall structure of the battery pack 200 more stable. Furthermore, in this application, the shape and size of the third adhesive member 23 can be reasonably adjusted according to actual conditions and needs, and this application does not impose specific limitations. This embodiment shows a case where the third adhesive member 23 consists of three pieces, and the three pieces of the third adhesive member 23 are spaced apart on the first side 12 of the main body 10.

[0058] Optionally, the bonding assembly 20 further includes a fourth adhesive member 24, which is disposed on the second side 13 of the main body 10 opposite to the first side 12. Specifically, the second side 13 is the side of the main body 10 closest to the end plate 220, and the fourth adhesive member 24, disposed on the second side 13, can effectively bond the insulating structure 100 and the end plate 220, thereby preventing the insulating structure 100 from moving relative to the end plate 220, and also making the overall structure of the battery pack 200 more stable. Furthermore, in this application, the shape and size of the fourth adhesive member 24 can be reasonably adjusted according to actual conditions and needs, and this application does not impose specific limitations. This embodiment shows a case where there are three fourth adhesive members 24, and the three fourth adhesive members 24 are spaced apart on the second side 13 of the main body 10.

[0059] Understandably, to prevent the third adhesive component 23 and the fourth adhesive component 24 from falling off, the areas on the insulation structure 100 where the third adhesive component 23 or the fourth adhesive component 24 needs to be bonded can be pre-treated with degreasing, polishing, and other surface treatments, i.e., the first side 12 or the second side 13 of the main body 10 can be surface-treated. Simultaneously, after the third adhesive component 23 and the fourth adhesive component 24 are bonded, the areas where the third adhesive component 23 or the fourth adhesive component 24 is attached can be kept under a certain pressure for a sufficient time, thereby improving the bonding effect of the third adhesive component 23 and the fourth adhesive component 24 and making them less likely to fall off.

[0060] In some embodiments, see Figure 5 and Figure 6As shown, the main body 10 and the bent portion 11 are integrally formed. Specifically, the integral forming of the main body 10 and the bent portion 11 avoids the weakness of the connection points caused by splicing or assembly methods. In related non-integral structures, the connection points may loosen or break due to stress concentration. The integral forming design makes the entire insulation structure 100 a continuous whole, and the stress can be distributed more evenly inside the structure. At the same time, integral forming gives the insulation structure 100 higher overall rigidity. The seamless connection between the bent portion 11 and the main body 10 makes the entire structure exhibit stronger consistency in resisting external deformation. Compared with the vacuum forming or injection molding methods used in related technologies, this application can form the integrally formed main body 10 and bent portion 11 by simply cutting the raw materials used to manufacture the insulation structure 100, which can greatly reduce production costs and simplify the manufacturing process, making it more conducive to processing and manufacturing.

[0061] Optionally, both the main body 10 and the bent portion 11 include at least one of polycarbonate sheet, polyvinyl fluoride sheet, ethylene-vinyl acetate sheet, and mica sheet. Specifically, the main body 10 and the bent portion 11 can be made of materials such as polycarbonate sheet, polyvinyl fluoride sheet, ethylene-vinyl acetate sheet, and mica sheet. When polycarbonate sheets are used to manufacture the main body 10 and the bending portion 11, both electrical isolation of the insulation structure 100 and its ability to effectively resist impact can be ensured. When polyvinyl fluoride sheets are used to manufacture the main body 10 and the bending portion 11, the insulation structure 100 can adapt to complex environments and possess corrosion resistance. When ethylene-vinyl acetate sheets are used to manufacture the main body 10 and the bending portion 11, the insulation structure 100 can cope with minor deformations and possess a certain degree of shock absorption. When mica sheets are used to manufacture the main body 10 and the bending portion 11, the insulation structure 100 can meet high-temperature requirements and possess wear resistance. In summary, polycarbonate sheets, polyvinyl fluoride sheets, ethylene-vinyl acetate sheets, and mica sheets each have different advantages, and a reasonable selection can be made according to actual conditions and needs. This application does not impose specific limitations.

[0062] Optionally, the bonding component 20 includes at least one of acrylic foam tape, polyurethane tape, and PVC double-sided tape. Specifically, the bonding component 20 includes at least one of acrylic foam tape, polyurethane tape, and PVC double-sided tape, each of which has its own unique adhesive characteristics. Acrylic foam tape typically has high initial tack and good holding power, enabling rapid adhesion and maintaining a stable connection for a long time. In the insulation structure 100, when it is necessary to quickly fix the mating part 1112 to the bend 11 with the mating part 1122, the acrylic foam tape can play an advantage, ensuring that the bonding joint can quickly reach a certain adhesive strength after the battery pack 200 is assembled, preventing the components from shifting in subsequent operations. Polyurethane tape has excellent abrasion resistance, chemical corrosion resistance, and high and low temperature resistance. When the battery pack 200 may face complex operating conditions, such as high and low temperature environments or the risk of chemical corrosion, polyurethane tape can maintain stable adhesive performance. Polyvinyl chloride (PVC) double-sided tape exhibits good overall performance under normal conditions and is relatively inexpensive, making it an economical and practical choice for battery pack applications that are cost-sensitive and operate in relatively mild environments. By selecting these different tapes, the bonding performance requirements of the battery pack 200 can be met under various operating conditions.

[0063] In summary, the insulation structure and battery pack of this application have at least the following beneficial effects:

[0064] (1) Effectively isolates the cells from the end plates, providing reliable insulation protection and ensuring the normal operation of the battery pack.

[0065] (2) Strengthening the insulation performance between the battery cell and the end plate ensures electrical isolation and improves the safety and stability of the battery pack.

[0066] (3) The adjacent bends are connected by a plug, which facilitates assembly and is effectively fixed, and can prevent the bends from warping, making the insulation structure more reliable.

[0067] (4) A robust structure can better protect the battery cells, extend the service life of the battery pack when subjected to external forces, and enhance the reliability of the battery pack.

[0068] (5) Matching the size of the insertion hole and the insertion mating part, or matching the size of the insertion slot and the insertion mating part, can achieve rapid assembly and improve the reliability of the connection.

[0069] (6) The plug-in piece fits tightly with the plug-in part, which can disperse stress and improve the service life of the insulation structure.

[0070] (7) The extension direction of the plug is reasonable, which facilitates assembly and prevents the plug from slipping out, making the insulation structure more reliable.

[0071] (8) The mating part covers the end of the bent part of the mating part, which can enhance the connection strength and prevent the connection from loosening or being damaged.

[0072] (9) The outer peripheral sidewall of the battery cell can press the mating part firmly, making the fit tighter and preventing the bent part from warping.

[0073] (10) The adhesive component, together with the connection structure of the plug-in mating part and the plug-in part, forms a double fixation, which can prevent the plug-in part from loosening and improve the structural reliability.

[0074] (11) The double-sided bonding method can enhance the stability of the connection, disperse stress, and prevent the mating parts from lifting.

[0075] (12) The bending part forms a cavity that can effectively wrap the battery cell, provide protection and accurately position the battery cell.

[0076] (13) The main body, the battery cell, and the end plate are fixed by adhesives, which can prevent relative movement of the main body, the battery cell, and the end plate, making the overall structure of the battery pack more stable.

[0077] (14) The main body and the bending part are integrally formed, which can make the stress distribution uniform, reduce costs and simplify the manufacturing process.

[0078] (15) The main body and bending parts made of different materials and the tape made of different materials can meet the insulation and bonding performance requirements under different working conditions.

[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. An insulating structure (100), characterized in that, include: The main body (10) has at least two adjacent sides provided with bent portions (11), and one of the two adjacent bent portions (11) is provided with a plug-in portion (1122) and the other is provided with a plug-in mating portion (1112). The two adjacent bent portions (11) are connected through the plug-in portion (1122) and the plug-in mating portion (1112).

2. The insulation structure (100) according to claim 1, characterized in that, The insertion portion (1122) includes an insertion hole (11221) or an insertion groove (11222); and / or, The insertion mating part (1112) includes a insertion piece (11121).

3. The insulation structure (100) according to claim 2, characterized in that, The insertion hole (11221) or the insertion groove (11222) extends away from the main body (10) along the bending portion (11).

4. The insulation structure (100) according to claim 1, characterized in that, In two adjacent bending portions (11), the bending portion (11) with the insertion portion (1122) is the insertion bending portion (1121), and the bending portion (11) with the insertion mating portion (1112) is the mating bending portion (1111). The insertion mating portion (1112) at least partially covers the end (11211) of the insertion bending portion (1121) from the side of the insertion bending portion (1121) away from the main body (10), so that the insertion mating portion (1112) is inserted into the insertion portion (1122) from the side away from the main body (10).

5. The insulation structure (100) according to claim 1, characterized in that, In two adjacent bending portions (11), the bending portion (11) with the insertion portion (1122) is the insertion bending portion (1121), and the bending portion (11) with the insertion mating portion (1112) is the mating bending portion (1111). The insertion mating portion (1112) at least partially covers the end (11211) of the insertion bending portion (1121) from the side of the insertion bending portion (1121) near the main body (10), so that the insertion mating portion (1112) is inserted into the insertion portion (1122) from the side near the main body (10).

6. The insulating structure (100) according to any one of claims 1 to 5, characterized in that, The insulation structure (100) further includes an adhesive component (20), which is at least partially disposed on the plug-in mating portion (1112) to adhesively fix the plug-in mating portion (1112) to the bending portion (11) where the plug-in portion (1122) is disposed.

7. The insulation structure (100) according to claim 6, characterized in that, The adhesive assembly (20) includes a first adhesive element (21) and a second adhesive element (22); The first adhesive (21) is bonded to the side of the bent portion (11) away from the main body (10) to fix the plug-in mating portion (1112) to the bent portion (11) provided with the plug-in portion (1122); The second adhesive (22) is adhered to the side of the bent portion (11) near the main body (10) to fix the plug-in mating portion (1112) to the bent portion (11) where the plug-in portion (1122) is provided.

8. The insulating structure (100) according to any one of claims 1 to 5, characterized in that, The bending portion (11) includes a first bending portion (111), a second bending portion (112), and a third bending portion (113); The first bent portion (111), the second bent portion (112) and the third bent portion (113) are arranged sequentially along the outer periphery of the main body (10), and the first bent portion (111), the second bent portion (112) and the third bent portion (113) are all bent toward the same side of the main body (10) to form a receiving cavity (30).

9. The insulation structure (100) according to claim 6, characterized in that, The adhesive assembly (20) further includes: A third adhesive element (23) is disposed on a first side (12) of the main body (10); and / or, A fourth adhesive member (24) is disposed on the second side (13) of the main body (10) opposite to the first side (12).

10. The insulation structure (100) according to claim 6, characterized in that, The main body (10) and the bent portion (11) are integrally formed; and / or, Both the main body (10) and the bent portion (11) include at least one of a polycarbonate sheet, a polyvinyl fluoride sheet, an ethylene-vinyl acetate sheet, and a mica sheet; and / or, The adhesive component (20) includes at least one of acrylic foam tape, polyurethane tape, and polyvinyl chloride double-sided tape.

11. A battery pack (200), characterized in that, The battery pack (200) includes a cell (210), an end plate (220), and an insulation structure (100). The insulation structure (100) is the insulation structure (100) according to any one of claims 1 to 10. The main body (10) of the insulation structure (100) is located between the cell (210) and the end plate (220). The bent portion (11) of the insulation structure (100) covers at least a portion of the outer peripheral sidewall of the cell (210).

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