Threading structure, battery pack and energy storage system

Abstract

The utility model discloses a threading structure, a battery pack and an energy storage system, and belongs to the technical field of battery modules, the threading structure is arranged on a module side plate between two adjacent battery modules, the threading structure comprises a main body, a sealing box and a pouring sealant, the main body is provided with an accommodating cavity and a first opening communicated with the accommodating cavity, and the sealing box is arranged in the accommodating cavity; the accommodating cavities are used for accommodating wire harness connecting joints of the two adjacent battery modules; the sealing box is connected with the main body and covers and seals the accommodating cavity; the pouring sealant covers the sealing box and seals the first opening. According to the battery module, the threading wires of the two adjacent battery modules are sealed, so that the sealing performance of the joint of the flexible circuit boards on the two adjacent battery modules is improved when the flexible circuit boards on the multiple battery modules need to be interconnected.

Description

Technical Field

[0001] The present application belongs to the field of battery module technology, and specifically relates to a threading structure, a battery pack, and an energy storage system. Background Art

[0002] At present, the flexible circuit boards on multiple battery modules need to be connected to each other. The existing method is to seal the battery module as a whole. When the flexible circuit boards on multiple battery modules need to be interconnected, the overall sealing method has a poor sealing effect on the connection between the flexible circuit boards on two adjacent battery modules. Summary of the Invention

[0003] In view of this, the present application discloses a threading structure, a battery pack and an energy storage system.

[0004] In a first aspect, an embodiment of the present application provides a threading structure disposed on a module side plate between two adjacent battery modules, the threading structure comprising:

[0005] The main body is provided with a receiving cavity and a first opening communicating with the receiving cavity, wherein the receiving cavity is used to receive the wiring harness connection connectors of two adjacent battery modules;

[0006] A sealing box is connected to the main body and covers the accommodating cavity;

[0007] The potting glue covers the sealing box and seals the first opening.

[0008] In some embodiments, the sealed box includes a box body, the box body has a first channel and a second opening connected to the first channel, the first channel, the second opening, and the accommodating cavity are all connected; and the box body is partially arranged in the accommodating cavity, and part of the wiring harness of the two adjacent battery modules is pressed on the main body, and part of the wiring harness passes through the second opening and the first channel in turn, and is connected to the wiring harness connection connector.

[0009] In some embodiments, the sealed box further comprises a cover configured to rotate relative to the box body between a first position and a second position;

[0010] The cover body is located at the first position, the cover body covers the second opening, and presses the wiring harness passing through the second opening onto the box body;

[0011] The cover body is located at the second position, the cover body opens the second opening, and the second opening is communicated with the first opening.

[0012] In some embodiments, the sealed box further includes a first limiting step, a cavity is formed between the first limiting step, part of the main body, and part of the box body, the cavity is communicated with the first opening, and part of the potting glue fills the cavity.

[0013] In some embodiments, the main body has an inner wall, the inner wall encloses the accommodating cavity, and the inner wall has a second limiting step;

[0014] The sealing box further comprises a first flange, which is arranged on a side of the first limiting step close to the second limiting step, and the first flange is mounted on the second limiting step.

[0015] In some embodiments, the sealing box further includes a third limiting step, which is arranged on a side of the box body away from the first limiting step, and the third limiting step is built on the main body.

[0016] In some embodiments, the sealing box further includes a plurality of protrusions, the protrusions are provided on the box body, and / or the protrusions are provided on the first limiting step, and the plurality of protrusions are all in contact with the inner wall.

[0017] In some embodiments, the sealed box further comprises a snap-fit ​​member, which is disposed on a side of the cover body facing the box body;

[0018] The box body has a first card interface, the cover body is located at a first position, and the card connector is connected to the first card interface.

[0019] In some embodiments, the sealed box further comprises a blocking portion, which is provided on a side of the cover body facing the box body; when the cover body is in the first position, the blocking portion partially abuts against the box body.

[0020] In some embodiments, a second card interface is provided on a side of the main body away from the third limiting step;

[0021] The threading structure also includes a wire harness buckle, which is clamped to the second clamping interface and presses part of the wire harness onto the main body.

[0022] In a second aspect, an embodiment of the present application provides a battery pack, comprising:

[0023] Any of the above threading structures;

[0024] Multiple battery modules, with a wire threading structure provided on the module side panel between two adjacent battery modules and sealing the wiring harness connection joints of the two adjacent battery modules;

[0025] The first box body, the threading structure and the battery module are all arranged in the first box body.

[0026] In a third aspect, an embodiment of the present application provides an energy storage system, comprising:

[0027] a plurality of the above-mentioned battery packs;

[0028] The second box body has a plurality of battery packs disposed therein.

[0029] Multiple embodiments of the present application have one of the following beneficial effects: a threading structure is provided, which is arranged on the module side panel between two adjacent battery modules, and the threading structure includes a main body, a sealing box, and a potting compound. The main body is provided with a accommodating cavity and a first opening connected to the accommodating cavity, and the accommodating cavity is used to accommodate the wiring harness connection connectors of the two adjacent battery modules; the sealing box is connected to the main body and covers the accommodating cavity; the potting compound covers the sealing box and seals the first opening; the present application seals the threading of two adjacent battery modules, thereby improving the sealing of the connection between the flexible circuit boards on two adjacent battery modules when the flexible circuit boards on multiple battery modules need to be interconnected. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 The overall structure diagram of the battery module provided in the embodiment of the present application;

[0032] Figure 2 This is a diagram of the overall structure of the threading structure provided in an embodiment of the present application from one perspective;

[0033] Figure 3 This is an overall structural diagram of the threading structure provided in an embodiment of the present application from another perspective;

[0034] Figure 4 Provided in the embodiments of this application Figure 3 Middle AA section;

[0035] Figure 5 A schematic diagram of the overall structure of the subject from one perspective provided in an embodiment of the present application;

[0036] Figure 6 A schematic diagram of the overall structure of the main body provided in an embodiment of the present application from another perspective;

[0037] Figure 7 Provided in the embodiments of this application Figure 6 mid-CC cross-section;

[0038] Figure 8 A schematic diagram of the overall structure of the box body provided in an embodiment of the present application from one perspective;

[0039] Figure 9 A schematic diagram of the overall structure of the box body provided in an embodiment of the present application from another perspective;

[0040] Figure 10 Provided in the embodiments of this application Figure 9 Middle EE cross-section;

[0041] Figure 11 A diagram showing the positional relationship between the box and the wiring harness provided in an embodiment of the present application;

[0042] Figure 12 A state diagram of the cover provided in an embodiment of the present application when it is in the first position;

[0043] Figure 13 A state diagram of the cover provided in an embodiment of the present application when it is in the second position;

[0044] Figure 14 Provided in the embodiments of this application Figure 11 A partial enlarged view of point a in the middle;

[0045] Figure 15 Provided in the embodiments of this application Figure 4 A partial enlarged view of point b in the middle;

[0046] Figure 16 A schematic diagram of the overall structure of the sealing box provided in an embodiment of the present application;

[0047] Figure 17 A schematic diagram of the overall structure of the cover provided in an embodiment of the present application;

[0048] Figure 18 Provided in the embodiments of this application Figure 12 A partial enlarged view of point c in the middle;

[0049] Figure 19 Provided in the embodiments of this application Figure 8 The local enlarged view of point d in the middle;

[0050] Figure 20 Provided in the embodiments of this application Figure 3 Middle BB cross-section;

[0051] Figure 21 Provided in the embodiments of this application Figure 20 The local enlarged view at point e in the middle;

[0052] Figure 22 Provided in the embodiments of this application Figure 6 Middle DD section;

[0053] Figure 23 A schematic diagram of the overall structure of the wiring harness buckle provided in an embodiment of the present application from one perspective;

[0054] Figure 24 Provided in the embodiments of this application Figure 20 The local enlarged image at point f in the middle;

[0055] Figure 25 A schematic diagram of the overall structure of the wiring harness buckle provided in an embodiment of the present application from another perspective;

[0056] Reference numerals:

[0057] 100-battery module; 110-cell battery; 111-pole; 120-CCS; 130-wiring harness;

[0058] 200 - module side panel; 210 - main body; 211 - accommodating cavity; 212 - first opening; 213 - inner wall; 2131 - second limiting step; 214 - second card interface;

[0059] 300-wiring harness connector;

[0060] 400 - sealing box; 410 - box body; 411 - first channel; 412 - second opening; 413 - first card interface; 420 - cover; 430 - third limiting step; 440 - protrusion; 450 - connecting piece; 460 - enclosure cloth; 470 - first limiting step; 480 - first flange;

[0061] 500-potting glue;

[0062] 600-chamber;

[0063] 700-Wire harness buckle; 710-Bump. DETAILED DESCRIPTION

[0064] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0065] It should be understood that although the terms first, second, etc. may be used herein to describe various components, these components should not be limited by these terms. These terms are used to distinguish one component from another. Thus, the first component discussed below could be referred to as the second component without departing from the teachings of the present invention. As used herein, the term "and / or" includes any one and all combinations of one or more of the associated listed items.

[0066] Those skilled in the art will appreciate that the drawings are merely schematic diagrams of exemplary embodiments and may not be to scale. The modules or processes in the drawings are not necessarily required to implement the present application and therefore cannot be used to limit the scope of protection of the present application.

[0067] See also Figure 1 , Figure 1 An overall structural diagram of a battery module provided in an embodiment of the present application. The battery module of an embodiment of the present application includes a plurality of unit cells 110, a wiring harness 130, and a CCS (integrated busbar, Centralized Connection System) 120. Among them, a plurality of unit cells 110 are stacked in sequence, and the poles 111 of the plurality of unit cells 110 are connected in parallel to form a battery pack; the CCS 120 electrically connects the plurality of unit cells 110; the wiring harness 130 connects the CCS 120 on two adjacent battery modules 100 to connect the two adjacent battery modules 100. A module side plate 200 is provided between two adjacent battery modules 100. The module side plate 200 is an insulating structure that isolates the two adjacent battery modules 100.

[0068] Currently, the method for sealing the battery module 100 is to seal the entire battery module 100. This method is not effective for sealing the wiring harnesses 130 between two adjacent battery modules 100. In view of this, the embodiments of the present application provide a threading structure that facilitates threading of the wiring harnesses 130 between two adjacent battery modules 100 while sealing the connection between the wiring harnesses 130 between the two adjacent battery modules 100, thereby solving at least part of the above-mentioned technical problems.

[0069] In some embodiments, see Figure 2 、 Figure 3 and Figure 4 , Figure 2 This is an overall structural diagram of the threading structure provided in an embodiment of the present application from one perspective. Figure 3 This is an overall structural diagram from another perspective of the threading structure provided in an embodiment of the present application. Figure 4 Provided in the embodiments of this application Figure 3 The embodiment of the present application provides a threading structure, which is arranged on the module side plate 200 between two adjacent battery modules 100, and includes a main body 210, a sealing box 400, and a potting compound 500.

[0070] It should be noted that when the battery module 100 of this embodiment is used, only a single battery module 100 may be used, or two or more battery modules 100 may be used in combination. When used in combination, the two battery modules 100 may be connected in series or in parallel.

[0071] Specifically, see Figure 5 、 Figure 6 and Figure 7 , Figure 5 This is a schematic diagram of the overall structure of the subject from one perspective provided in the embodiment of the present application. Figure 6 This is a schematic diagram of the overall structure of the main body provided in the embodiment of the present application from another perspective. Figure 7 Provided in the embodiments of this application Figure 6 The main body 210 is provided with a receiving cavity 211 and a first opening 212 communicating with the receiving cavity 211 . The receiving cavity 211 is used to receive the wiring harness connector 300 of two adjacent battery modules 100 . The wiring harness connector 300 is used to connect the wiring harnesses 130 on two adjacent battery modules 100 .

[0072] It should be noted that the main body 210 can be a part of the module side plate 200, that is, the main body 210 and the module side plate 200 can be an integrated structure. The main body 210 can also be an independent structure, set on the module side plate 200. The first opening 212 is an opening enclosed by the top edge of the main body 210 (such as Figure 5 ). Wire harness 130 may be an FPC (Flexible Printed Circuit). An FPC is a circuit board made of a flexible substrate that connects and supports electrical connections between electronic components. Compared to traditional rigid printed circuit boards, FPCs are more flexible and bendable, making them suitable for applications that require bending, folding, or conforming to complex shapes.

[0073] Specifically, the sealing box 400 is connected to the main body 210 and covers the accommodating cavity 211. The sealing box 400 seals the accommodating cavity 211, thereby sealing the wiring harness connector 300. It should be noted that the portion of the wiring harness 130 connected to the wiring harness connector 300 also needs to pass through the sealing box 400, and the area where the wiring harness 130 passes through needs to be sealed.

[0074] Specifically, the potting compound 500 covers the sealing box 400 and seals the first opening 212. By covering the sealing box 400 and sealing the first opening 212, the potting compound 500 seals the connection point (i.e., the wiring harness connector 300) between the two adjacent battery modules 100 and the location where the wiring harness 130 passes through. The potting compound 500 prevents moisture, dust, or other foreign matter from entering the wiring structure, thereby protecting the wiring harness connector 300 and the connection point between the wiring harness 130 between the two adjacent battery modules 100.

[0075] In light of this, this embodiment uses a sealing box 400 to seal the wiring harness connector 300 within the main body 210 and facilitate the threading of the wiring harness 130 between two adjacent battery modules 100. Subsequently, the location where the wiring harness 130 passes through is sealed using potting compound 500. Overall, this threading structure is designed to seal the connection and threading of the wiring harness 130 between battery modules 100. The combination of the main body 210, sealing box 400, and potting compound 500 ensures the safety and reliability of the wiring harness connector 300 and the wiring harness 130.

[0076] In some embodiments, see Figure 8 、 Figure 9 、 Figure 10 and Figure 11 , Figure 8 This is a schematic diagram of the overall structure of the box body provided in an embodiment of the present application from one perspective. Figure 9 This is a schematic diagram of the overall structure of the box body provided in an embodiment of the present application from another perspective. Figure 10 Provided in the embodiments of this application Figure 9 Middle EE cross-section, Figure 11 Figure 4 shows the relationship between the box body and wiring harness provided in an embodiment of the present application. The sealed box 400 includes a box body 410 having a first channel 411 and a second opening 412 communicating with the first channel 411. The first channel 411, the second opening 412, and the accommodating cavity 211 are all connected. The box body 410 is partially disposed within the accommodating cavity 211, and portions of the wiring harnesses 130 of two adjacent battery modules 100 are pressed against the main body 210. Portions of the wiring harnesses 130 sequentially pass through the second opening 412 and the first channel 411, connecting to the wiring harness connector 300.

[0077] It should be noted that the wiring structure provided in this embodiment is provided between two battery modules 100, wherein the wiring harness 130 of one battery module 100 is passed through the first opening 212 to the accommodating cavity 211 and connected to the wiring harness connector 300; the wiring harness 130 of the battery module 100 is partially pressed against the main body 210 by the box body 410 installed on the main body 210, which can play a certain role in limiting and guiding the wiring harness 130 of the battery module 100. The wiring harness 130 of the other battery module 100 passes through the first opening 212, the second opening 412, and the first channel 411 in sequence, and is connected to the wiring harness connector 300 in the accommodating cavity 211; the box body 410 installed on the main body 210 facilitates the wiring of the wiring harness 130 of the battery module 100.

[0078] In view of this, the housing 410 of the present embodiment provides guidance and positioning for the wiring harness 130, ensuring proper connection between the wiring harness connector 300 and the wiring harness 130. Furthermore, the provision of a threading structure enables the wiring harness 130 to pass through the space between two adjacent battery modules 100, achieving connection and routing of the wiring harness 130. This embodiment is intended to improve the reliability and sealing of the connection of the wiring harness 130.

[0079] In some embodiments, the box body 410 guides and limits the wiring harness 130. To ensure a tight seal around the wiring harness connector 300, the second opening 412 of the box body 410 must be sealed. To this end, the sealing box 400 further includes a cover 420, which is configured to rotate relative to the box body 410 between a first position and a second position. When the cover 420 is in the first position, it seals the second opening 412 and presses the wiring harness 130, which passes through the second opening 412, against the box body 410. When the cover 420 is in the second position, it opens the second opening 412, communicating with the first opening 212.

[0080] It should be noted that the battery module 100 with the module side plate 200 installed is referred to as the first battery module, and the battery module 100 adjacent to the first battery module is referred to as the second battery module. The first battery module and the second battery module are merely examples and are not intended to be limiting. The side of the box body 410 facing the first battery module is used as the reference axis, and the cover body 420 rotates relative to the box body 410 using this reference axis as the rotation axis. Figure 12 , Figure 12 This diagram illustrates the cover 420 in its first position, as provided in an embodiment of the present application. In the first position, the cover 420 rotates to contact the housing 410, disconnecting the second opening 412 from the first opening 212. When in the first position, the cover 420 seals the second opening 412. This seals the wiring harness connector 300 within the housing 211 and prevents the potting compound 500 from entering the housing 211 during potting.

[0081] See also Figure 13 , Figure 13 A state diagram of the cover body provided in an embodiment of the present application when it is in the second position. The second position is any position to which the cover body 420 can rotate along the rotation axis except the first position, that is, the cover body 420 is rotated until it is no longer in contact with the box body 410, and the second opening 412 is connected to the first opening 212. When the cover body 420 is in the second position, the second opening 412 is open. When the angle between the plane of the box body 410 and the cover body 420 is greater than or equal to 90°, the wiring harness 130 on the second battery module can be installed on the wiring harness connector 300. Similarly, it is also convenient to remove the wiring harness 130 on the second battery module from the wiring harness connector 300.

[0082] It should be noted that the box body 410 and the cover 420 can be an integral structure, and can be a plastic part, to facilitate the overall production of the sealed box 400, while also ensuring that the cover 420 can rotate relative to the box body 410 along the rotation axis to control the communication between the second opening 412 and the first opening 212. The box body 410 and the cover 420 can also be a separate structure. As long as the cover 420 can rotate relative to the box body 410 along the rotation axis, there is no specific limitation on whether the box body 410 and the cover 420 are an integral structure or a separate structure.

[0083] In view of this, the cover 420 of this embodiment can cover the second opening 412, ensuring the sealing of the wiring harness connector 300. At the same time, by rotating the cover 420, the wiring harness 130 on the second battery module can be easily installed or removed. This embodiment is intended to improve the sealing and operability of the connection of the wiring harness 130.

[0084] In some embodiments, see Figure 14 , Figure 14 Provided in the embodiments of this application Figure 11 The sealing box 400 further includes a first limiting step 470 , a cavity 600 is formed between the first limiting step 470 , a portion of the main body 210 , and a portion of the box body 410 , the cavity 600 being connected to the first opening 212 , and partially filled with the potting compound 500 .

[0085] It should be noted that the battery module 100 with the module side plate 200 installed is recorded as the first battery module, and the battery module 100 adjacent to the first battery module is recorded as the second battery module. The first battery module and the second battery module are only used as examples and are not specifically limited. The wiring harness 130 of the first battery module passes through the first opening 212 to the accommodating cavity 211 and is connected to the wiring harness connector 300; the wiring harness 130 of the second battery module passes through the first opening 212, the second opening 412, and the first channel 411 in sequence, and is connected to the wiring harness connector 300 in the accommodating cavity 211. The potting compound 500 seals the wiring point of the wiring harness 130 of the second battery module, and the cavity 600 allows the potting compound 500 to be filled with more, resulting in a better sealing effect. The cavity 600 also provides operating space for the operator to flip the cover 420.

[0086] In view of this, the provision of the chamber 600 in this embodiment enables the potting compound 500 to more fully fill the threading area of ​​the wiring harness 130, thereby improving the sealing effect. At the same time, the chamber 600 provides sufficient space for the operator to facilitate the flipping of the cover 420.

[0087] In some embodiments, see Figure 15 , Figure 15 Provided in the embodiments of this application Figure 4 A partial enlarged view at point b in the middle. The main body 210 has an inner wall 213, which encloses the accommodating cavity 211 and has a second stop step 2131. The sealing box 400 also includes a first flange 480, which is disposed on a side of the first stop step 470 that is adjacent to the second stop step 2131 and rests on the second stop step 2131. The sealing box 400 also includes a third stop step 430, which is disposed on a side of the box body 410 that faces away from the first stop step 470 and rests on the main body 210.

[0088] It should be noted that the first flange 480 is mounted on the second limiting step 2131 so that it contacts the second limiting step 2131 and is located above the second limiting step 2131. The third limiting step 430 is mounted on the main body 210 so that it contacts the side of the main body 210 facing away from the first limiting step 470 and is located above the side of the main body 210 facing away from the first limiting step 470. The first limiting step 470 and the third limiting step 430 are positioned opposite each other. In this embodiment, the first flange 480 cooperates with the second limiting step 2131, and the third limiting step 430 cooperates with the side of the main body 210 facing away from the first limiting step 470, thereby achieving the installation of the box body 410 on the main body 210.

[0089] In view of this, the cooperation between the first flange 480 and the second limiting step 2131, and the cooperation between the third limiting step 430 and the main body 210, ensures that the box body 410 is firmly installed on the main body 210. This embodiment is intended to provide better structural support and stability to ensure the overall performance and reliability of the sealed box 400.

[0090] In some embodiments, see Figure 16 , Figure 16 The sealing box 400 further includes a plurality of protrusions 440 , which are disposed on the box body 410 and / or on the first limiting step 470 , and the plurality of protrusions 440 abut against the inner wall 213 .

[0091] It should be noted that the protrusions 440 are provided on the box body 410 on two sides perpendicular to the side where the third limiting step 430 is provided, with at least one protrusion 440 provided on each side. The protrusions 440 are provided on the first limiting step 470 on the side of the first limiting step 470 facing the second limiting step 2131, with at least one protrusion 440 provided on the first limiting step 470. The wiring harness 130 is pressed against the main body 210 by the box body 410, so that the box body 410 is squeezed toward the first limiting step 470 by the wiring harness 130, which may cause the box body 410 to deflect. However, due to the presence of the protrusions 440, the box body 410 is not squeezed toward the first limiting step 470 by the wiring harness 130, but remains stably abutted against the main body 210.

[0092] In view of this, the presence of the protrusion 440 in this embodiment effectively prevents the box body 410 from deflecting under the squeezing force of the wire harness 130. The protrusion 440 provides additional support and stability, allowing the box body 410 to firmly abut against the main body 210, thereby maintaining the integrity and reliability of the sealed box 400.

[0093] In some embodiments, see Figure 17 、 Figure 18 , Figure 17 This is a schematic diagram of the overall structure of the cover provided in an embodiment of the present application. Figure 18 Provided in the embodiments of this application Figure 12 The sealed box 400 further includes a snap-in element 450 disposed on the side of the cover 420 facing the box body 410. The box body 410 has a first snap-in interface 413. When the cover 420 is in the first position, the snap-in element 450 snaps into the first snap-in interface 413.

[0094] Please note that Figure 7 and Figure 19 , Figure 19 Provided in the embodiments of this application Figure 7 A partial enlarged view at point d in the middle. First latch interfaces 413 are provided at both ends of the side of the box body 410 facing the first limiting step 470. Snap connectors 450 are provided at both ends of the side of the cover body 420 facing the box body 410, corresponding to the first latch interfaces 413. When the cover body 420 is in the first position, the snap connectors 450 snap into the first latch interfaces 413, thereby defining the position between the cover body 420 and the box body 410. At the same time, the cover body 420 better presses a portion of the wiring harness 130 against the box body 410, providing a certain degree of positioning and guidance for the wiring harness 130.

[0095] In view of this, the engagement of the snap connector 450 with the first snap interface 413 in this embodiment defines the position between the cover 420 and the box body 410. This not only ensures the stable fixation of the cover 420, but also better compresses the wiring harness 130, providing a certain degree of position limiting and guiding. This helps maintain the neat layout and good connection of the wiring harness 130. When it is necessary to open the second opening 412, the operator removes the snap connector 450 from the first snap interface 413 to release the connection between the cover 420 and the box body 410, allowing the cover 420 to be rotated.

[0096] In some embodiments, please refer to Figure 17 、 Figure 20 and Figure 21 , Figure 20 Provided in the embodiments of this application Figure 3 Middle BB cross-section, Figure 21 Provided in the embodiments of this application Figure 20 The sealed box 400 further includes a retaining portion 460, which is disposed on the side of the cover 420 facing the box body 410. When the cover 420 is in the first position, the retaining portion 460 partially abuts against the box body 410.

[0097] It should be noted that the enclosure 460 can have various forms. The first form is that the enclosure 460 can be a quadrilateral structure with the ends connected in sequence, and is arranged on the side of the cover 420 facing the box body 410. When the potting compound 500 is potted, the enclosure 460 can prevent the potting compound 500 from flowing into the first channel 411. The second form is based on the first form, with a portion of the enclosure 460 near the clamping member 450 cut off. This can facilitate the threading of the wiring harness 130 and reduce the manufacturing cost of the enclosure 460. There are other forms that are not explained one by one, but the enclosure 460 must meet the following requirements: when the cover 420 is in the first position, a portion of the enclosure 460 abuts the box body 410, that is, the enclosure 460 surrounds the gap between the box body 410 and the cover 420, preventing the potting compound 500 from flowing into the first channel 411 through the gap, thereby avoiding affecting the wiring harness connector 300.

[0098] In view of this, the presence of the enclosure 460 in this embodiment effectively prevents the potting compound 500 from entering the first channel 411, thereby protecting the integrity and reliability of the wiring harness connector 300. Different forms of the enclosure 460 can be selected according to specific needs to meet different design requirements and manufacturing cost considerations.

[0099] In some embodiments, see Figure 5 、 Figure 6 and Figure 22 , Figure 22 Provided in the embodiments of this application Figure 6 In the D-D sectional view. A second card interface 214 is provided on one side of the main body 210 away from the third limiting step 430. Please refer to Figure 23 and Figure 24 , Figure 23 FIG. is an overall structural schematic diagram of a wire harness buckle provided by an embodiment of the present application from a perspective. Figure 24 This is provided by an embodiment of the present application Figure 20 Local enlarged view at f in. The wire threading structure further includes a wire harness buckle 700, and the wire harness buckle 700 is clamped in the second card interface 214. The wire harness buckle 700 presses part of the wire harness 130 on the main body 210.

[0100] It should be noted that the second card interface 214 is located at both ends of one side of the main body 210 away from the third limiting step 430. The cross-section of the wire harness buckle 700 is in a U shape. The inner wall of the wire harness buckle 700 has bumps 710. The bumps 710 are located at both ends of one side of the inner wall of the wire harness buckle 700 and correspond to the second card interface 214, that is, the distance between the two bumps 710 is the same as the distance between the two second card interfaces 214. When the wire harness buckle 700 is installed on the main body 210, the bumps 710 are clamped at the second card interface 214 to form a stable connection between the wire harness buckle 700 and the main body 210. Please refer to Figure 25 , Figure 25 FIG. is an overall structural schematic diagram of the wire harness buckle provided by an embodiment of the present application from another perspective. A part between the two bumps 710 on the wire harness buckle 700 is cut off, which not only facilitates the wire threading of the wire harness 130 between the wire harness buckle 700 and the main body 210, but also reduces the manufacturing cost of the wire harness buckle 700. The wire harness 130 that needs to pass through the first channel 411 also needs to pass through between the wire harness buckle 700 and the main body 210 and be connected to the battery module 100. The wire harness buckle 700 presses the wire harness 130 passing through between the wire harness buckle 700 and the main body 210 on the main body 210, playing a certain limiting and guiding role for the wire harness 130.

[0101] In view of this, in this embodiment, a stable connection is formed between the wire harness buckle 700 and the main body 210 through the cooperation of the wire harness buckle 700 and the second card interface 214. The bumps 710 of the wire harness buckle 700 provide additional support and stability, ensuring that the wire harness 130 can firmly press the wire harness 130 on the main body 210. At the same time, cutting off the part between the bumps 710 on the wire harness buckle 700 not only facilitates the wire threading of the wire harness 130, but also reduces the manufacturing cost. In addition, the wire harness buckle 700 also plays a certain limiting and guiding role, pressing the wire harness 130 passing through the first channel 411 on the main body 210 and connecting it to the battery module 100. Such a design helps to keep the wire harness 130 neatly arranged and in a good connection state.

[0102] Accordingly, this embodiment provides a battery pack comprising the threading structure described in any of the above embodiments, a plurality of battery modules 100, and a first housing (not shown). The threading structure is disposed on the module side panel 200 between two adjacent battery modules 100 and seals the wiring harness connectors 300 between the two adjacent battery modules 100. Both the threading structure and the battery modules 100 are disposed within the first housing. This battery pack can incorporate all the technical features and benefits of the above-described threading structures and will not be further elaborated upon here.

[0103] Accordingly, this embodiment provides an energy storage system, comprising the aforementioned battery pack and a second housing. Multiple battery packs are disposed within the second housing. This battery pack can possess all the technical features and benefits of the aforementioned battery packs, which are not further detailed here. This energy storage system can possess all the technical features and benefits of the aforementioned threading structure, which are not further detailed here.

[0104] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0105] The above is a detailed introduction to the threading structure provided in the embodiments of the present application, and specific examples are used to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the technical solutions and core ideas of the present application; ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A threading structure, characterized in that: The threading structure is provided on a module side plate (200) between two adjacent battery modules (100), and includes: The main body (210) is provided with a receiving cavity (211) and a first opening (212) communicating with the receiving cavity (211), wherein the receiving cavity (211) is used to receive the wiring harness connection connectors (300) of the two adjacent battery modules (100); A sealing box (400) is connected to the main body (210) and covers the accommodating cavity (211); The potting glue (500) covers the sealing box (400) and seals the first opening (212).

2. The threading structure according to claim 1, wherein: The sealed box (400) includes a box body (410), the box body (410) having a first channel (411) and a second opening (412) connected to the first channel (411), the first channel (411), the second opening (412), and the accommodating cavity (211) are all connected; and the box body (410) is partially arranged in the accommodating cavity (211), and part of the wiring harness (130) of two adjacent battery modules (100) is pressed onto the main body (210), and part of the wiring harness (130) is sequentially passed through the second opening (412) and the first channel (411), and connected to the wiring harness connection connector (300).

3. The threading structure according to claim 2, characterized in that: The sealed box (400) further includes a cover (420), wherein the cover (420) is configured to rotate relative to the box body (410) between a first position and a second position; The cover (420) is located at the first position, the cover (420) covers the second opening (412), and presses the wiring harness (130) passing through the second opening (412) onto the box body (410); The cover (420) is located at the second position, and the cover (420) opens the second opening (412), and the second opening (412) is communicated with the first opening (212).

4. The threading structure according to claim 3, wherein: The sealing box (400) further comprises a first limiting step (470), wherein a chamber (600) is formed between the first limiting step (470), a portion of the main body (210), and a portion of the box body (410), wherein the chamber (600) is connected to the first opening (212), and a portion of the potting glue (500) fills the chamber (600).

5. The threading structure according to claim 4, characterized in that: The main body (210) has an inner wall (213), the inner wall (213) encloses the accommodating cavity (211), and the inner wall (213) has a second limiting step (2131); The sealing box (400) further includes a first flange (480), which is arranged on a side of the first limiting step (470) close to the second limiting step (2131), and the first flange (480) is mounted on the second limiting step (2131).

6. The threading structure according to claim 5, characterized in that: The sealing box (400) further comprises a third limiting step (430), which is arranged on a side of the box body (410) away from the first limiting step (470), and the third limiting step (430) is mounted on the main body (210).

7. The threading structure according to claim 5, wherein: The sealing box (400) further includes a plurality of protrusions (440), wherein the protrusions (440) are arranged on the box body (410), and / or the protrusions (440) are arranged on the first limiting step (470), and the plurality of protrusions (440) are all in contact with the inner wall (213).

8. The threading structure according to claim 4, wherein: The sealed box (400) further includes a clamping member (450), and the clamping member (450) is arranged on a side of the cover (420) facing the box body (410); The box body (410) has a first card interface (413), the cover body (420) is located at the first position, and the card connector (450) is connected to the first card interface (413).

9. The threading structure according to claim 4, wherein: The sealing box (400) further includes a blocking portion (460), which is arranged on the side of the cover (420) facing the box body (410); when the cover (420) is located at the first position, the blocking portion (460) partially abuts against the box body (410).

10. The threading structure according to claim 6, wherein: A second card interface (214) is provided on a side of the main body (210) away from the third limiting step (430); The threading structure further includes a wire harness buckle (700), which is clamped to the second clamping interface (214), and the wire harness buckle (700) presses part of the wire harness (130) onto the main body (210).

11. A battery pack, characterized in that: The battery pack includes: The threading structure according to any one of claims 1 to 10; A plurality of battery modules (100), wherein the threading structure is provided on a module side plate (200) between two adjacent battery modules (100) and seals the wiring harness connection connectors (300) of the two adjacent battery modules (100); A first box body, wherein the threading structure and the battery module (100) are both arranged in the first box body.

12. An energy storage system, characterized in that: The energy storage system comprises: A plurality of battery packs as claimed in claim 11; A second box body, wherein the plurality of battery packs are arranged in the second box body.

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