Wire harness fixing structure, battery pack and vehicle

Abstract

The utility model relates to the technical field of circuit device, disclose a kind of wire harness fixing structure, battery pack and vehicle, wire harness fixing structure includes: wire harness box, structure is as groove type;Cover, cover is in wire harness box, cover and wire harness box are jointly enclosed and form accommodating space, accommodating space is suitable for accommodating wire harness;Foaming fixing glue, it is set in accommodating space, foaming fixing glue is suitable for the wire harness is constrained between wire harness box and cover plate. The utility model provides wire harness fixing structure, cover and wire harness box are jointly enclosed and form accommodating space suitable for accommodating wire harness, and by the filling of foaming fixing glue, ensure that wire harness is fixed well, adjacent component will not rub and occur, realize wire harness and battery pack upper cover of electric core PET isolation membrane Isolation, reduce the risk that wire harness is scratched and ground and leads to leakage even short circuit. Wire harness can be well fixed, and wire harness is arranged in narrow arrangement space that meets product needs.

Description

Technical Field

[0001] This utility model relates to the field of wiring device technology, specifically to a wiring harness fixing structure, a battery pack, and a vehicle. Background Technology

[0002] With the rapid development of electric vehicles, the requirements for power, efficiency, and driving range are constantly increasing. To meet these rising performance demands, the voltage platform and capacity of battery packs are also continuously improving. The increased battery pack voltage platform leads to a greater number of internal monitoring harnesses; while the increased battery capacity places higher demands on the internal space layout, thus reducing the installation space for components other than the battery cells. Therefore, the increased number of harnesses and the reduced wiring space significantly increase the difficulty of harness design.

[0003] In related technologies, when the wiring space in the vertical height inside the battery pack is relatively narrow, it is easy to fail to meet the wiring requirements; if the wiring harness is not protected in order to achieve wiring in a narrow space, it is easy for the wiring harness to wear out due to vibration and other factors during long-term use, or even leakage. Utility Model Content

[0004] In view of this, the present invention provides a wiring harness fixing structure, a battery pack, and a vehicle to solve the problem that wiring requirements may not be met when the wiring space is relatively small.

[0005] In a first aspect, this utility model provides a wire harness fixing structure, comprising:

[0006] The wire harness box has a slot-shaped structure.

[0007] A cover plate is placed over the wire harness box. The cover plate and the wire harness box together enclose a receiving space suitable for accommodating the wire harness.

[0008] Foamed fixing adhesive, placed within the receiving space, is suitable for securing the wire harness between the harness box and the cover plate.

[0009] Beneficial Effects: The wire harness fixing structure provided by this utility model, with the cover plate and wire harness box together forming a suitable space for accommodating the wire harness, and the filling with foamed fixing adhesive, ensures that the wire harness is well fixed and will not rub against adjacent components. The entire wire harness is effectively and reliably fixed within the battery pack, achieving isolation between the wire harness and the PET separator film of the battery cell and the battery pack cover, preventing wear on the wire harness and reducing the risk of leakage or even short circuits caused by scratches damaging the insulation. Since the foamed fixing adhesive is in a fluid state before solidification, it can effectively fill irregular spaces within the wire harness box, penetrating deep into gaps. After solidification, it forms a tight wrap without occupying excessive space above the wire harness, thus providing good fixation and allowing the wire harness to be arranged within the limited space required by the product.

[0010] In one alternative embodiment, a plurality of foamed fixing adhesives are provided within the accommodating space, with adjacent foamed fixing adhesives spaced apart along the extension direction of the wire harness.

[0011] Beneficial effects: The foam fixing adhesive does not need to completely fill the space. Only an appropriate amount needs to be filled. By applying the foam fixing adhesive at intervals, the constraint effect on the wire harness is ensured, while reducing material usage, further improving assembly efficiency and reducing costs.

[0012] In one alternative embodiment, the wire harness box includes at least one isolation baffle adapted to divide the accommodating space into a plurality of accommodating subspaces, the extension direction of the isolation baffle being parallel to the extension direction of the wire harness.

[0013] Beneficial effects: This embodiment, with the assistance of isolation baffles, arranges wire harness branches in different directions in their respective accommodating subspaces, ensuring that the wire harness branches are clear and orderly, avoiding cross-interference, and improving wiring efficiency and safety.

[0014] In one alternative embodiment, one of the wire harness box and the cover plate is provided with a slot, and the other is provided with a corresponding buckle. The buckle is adapted to engage with the slot to fix the wire harness box and the cover plate in place.

[0015] Beneficial effects: The tight fit between the slots and clips ensures a secure connection between the wiring harness box and the cover, preventing loosening. This slot-and-clip design simplifies the assembly process, improves the overall structural stability, further optimizes the internal space utilization of the battery pack, and reduces the risk of wiring harness wear due to loosening.

[0016] In one alternative embodiment, the wire harness box includes a bottom wall and a side wall extending from one side of the bottom wall, and the latch includes a first hook extending from the side wall toward the side opposite to the wire harness.

[0017] The cover plate includes a cover plate body and an extension portion extending from the cover plate body toward the bottom wall side. The extension portion extends toward the wire harness side and forms a second hook. The cover plate body, the extension portion and the second hook together form a slot.

[0018] Beneficial effects: The cover plate extends towards the bottom wall, effectively covering the opening of the wire harness box, enhancing the seal, preventing dust and moisture from entering, and saving space in the height direction.

[0019] In one alternative embodiment, the wire harness box includes a bottom wall, and the cover includes a cover body, with the bottom wall parallel to the cover body.

[0020] Beneficial effects: By ensuring that the bottom wall is parallel to the cover plate body, deformation caused by the expansion of the foam fixing adhesive can be avoided, ensuring the structural stability of the wire harness box and preventing irregular deformation of the wire harness box, thereby effectively guaranteeing the dimensions in the height direction.

[0021] In one alternative embodiment, the wire harness box has an opening at at least one end along the wire harness extension direction to allow the wire harness to pass through and / or exit.

[0022] In one alternative embodiment, the wire harness box has openings at both ends along the wire harness extension direction.

[0023] Beneficial effects: By forming openings at both ends of the wire harness box along the extension direction of the wire harness, it is convenient for the wire harness to be inserted and pulled out in both directions, improving assembly flexibility. At the same time, it ensures that the wire harness is evenly distributed in the box, reduces the risk of damage to the wire harness caused by bending or squeezing, and further optimizes the wire harness protection effect.

[0024] Secondly, this utility model also provides a battery pack, comprising:

[0025] The box body and the top cover mounted on the box body;

[0026] The battery pack is housed inside the casing, and a first space is formed between the battery pack and the top cover.

[0027] The aforementioned wire harness fixing structure is installed within the first space.

[0028] Since the battery pack includes a wiring harness fixing structure, which has the same effect as the wiring harness fixing structure, it will not be described in detail here.

[0029] Thirdly, this utility model also provides a vehicle, comprising:

[0030] The vehicle body, and the battery pack as described above, the battery pack being electrically connected to the vehicle body.

[0031] Since the vehicle includes a wiring harness fixing structure, which has the same effect as the wiring harness fixing structure, it will not be elaborated here. Attached Figure Description

[0032] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0033] Figure 1 A cross-sectional view of the wire harness arrangement in the wire harness fixing structure;

[0034] Figure 2 A top view of the wire harness arrangement in the wire harness fixing structure;

[0035] Explanation of reference numerals in the attached figures:

[0036] 1. Wiring harness box; 11. Isolation baffle; 12. First latch; 13. Bottom wall; 14. Side wall;

[0037] 2. Cover plate; 21. Cover plate body; 22. Second hook; 23. Extension;

[0038] 3. Wire harness; 4. Foaming adhesive. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0040] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0041] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0042] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0043] With the rapid development of electric vehicles, the requirements for power, efficiency, and driving range are constantly increasing. To meet these rising performance demands, the voltage platform and capacity of battery packs are also continuously improving. The increased battery pack voltage platform leads to a greater number of internal monitoring harnesses; while the increased battery capacity places higher demands on the internal space layout, thus reducing the installation space for components other than the battery cells. Therefore, the increased number of harnesses and the reduced wiring space significantly increase the difficulty of harness design.

[0044] In related technologies, the wiring harness arrangement schemes mainly include the following four types.

[0045] The first method involves wrapping the wire harness in a near-circular shape with tape, then securing it with cable ties and fixing it to a beam, side wall, or specially designed bracket.

[0046] The second method involves placing the wires inside the wire harness box 1 and partially restraining them with cable ties. The wire harness box 1 can simultaneously protect and fix the wire harness.

[0047] The third method involves laying the wire harness flat inside a flat, overlapping sleeve, using the sleeve for protection and a certain degree of constraint.

[0048] The fourth method involves loosely wrapping the wire harness with tape, then pressing it into a flat shape, which will then rebound to form an oval shape.

[0049] However, when the vertical wiring space inside the battery pack is relatively narrow, for example, when more than 130 wires need to pass through a wiring location with a total conductor cross-sectional area of ​​approximately 192 mm², the wiring space is limited. 2 The total cross-sectional area occupied by the wire harness is approximately 350mm². 2(Approximately 21mm in diameter). The wiring location is situated between the cell PTE separator below and the battery pack sheet metal cover above, leaving extremely limited space for wiring—only 8.9mm of vertical straight-line distance. In this situation, wear on the cell PTE separator below the wiring location can easily trigger battery pack insulation monitoring alarms or even leakage. Simultaneously, due to manufacturing processes, the sheet metal cover above may have burrs in certain areas, posing a risk of scratching the wire insulation. Therefore, when routing the wiring harness in this area, it requires isolation and protection, and effective fixation to ensure stable and reliable battery pack monitoring signals and excellent insulation.

[0050] For the first layout scheme, the required 130+ wire harnesses can only be bundled and tied into a near-circular shape, and the diameter of the bundled wire harness assembly is greater than 21mm, which is far greater than the 8.9mm longitudinal height of the layout location. Furthermore, the layout space cannot provide reliable fixing points to secure the wire harnesses. This scheme does not meet the layout requirements.

[0051] For the second arrangement, the wire harness can be evenly laid out inside the 2mm thick wire harness box 1. The vertical height of the existing conventional nylon cable ties is about 6.7mm, and the thickness of the wire harness box 1 plus the vertical height of the cable ties already exceeds the 8.9mm of the arrangement space. This arrangement does not meet the requirements.

[0052] For the third layout scheme, the wire harness is evenly distributed within a flat, overlapping sleeve, with a total thickness of 10±1mm after wiring. Simultaneously, to prevent friction between the flat, overlapping sleeve and the battery cell's PET separator, a 1mm insulating sheet is required between them for protection. This scheme requires a minimum longitudinal height of 10mm, exceeding the 8.9mm layout space height. Therefore, this scheme does not meet the layout requirements.

[0053] For the fourth arrangement, considering the 8.9mm vertical height of the arrangement position, and taking into account the isolation space between the wire harness, the PET separator film of the lower battery cell, and the upper sheet metal cover, the effective wire harness arrangement height cannot exceed 7mm, and the width needs to be at least 35mm. If a loose wrapping method with tape is used, the cross-section of the wire harness assembly needs to be elliptical, with an eccentricity close to 1, which is too "flat." This would greatly increase the difficulty of wire harness manufacturing, make it impossible to guarantee product consistency, and hinder standardized mass production. This arrangement does not meet the production process requirements.

[0054] Therefore, when faced with extremely limited space for wiring harness arrangement, with the cell PTE separator below the wiring location and the battery pack sheet metal cover above, the wiring harness arrangement scheme needs to meet the following requirements: the wiring harness needs to be well fixed and not rub against adjacent components; it also needs to be effectively and reliably fixed within the battery pack and isolated from the cell PTE separator and the battery pack cover; at the same time, the wiring harness routing and layout need to be reasonable, not affecting the assembly and use of other components, and meeting the needs of processing, production and transportation convenience.

[0055] To meet the above wiring requirements, the wire harness fixing structure provided in the embodiments of this utility model can provide good fixing for the wire harness and arrange the wire harness in a small arrangement space that meets the product requirements. At the same time, it can isolate the wire harness from other components such as the battery cell PET separator film and sheet metal cover, thereby fixing the wire and preventing the wire harness from being worn in the wire harness box 1.

[0056] The following is combined Figures 1 to 2 The following describes embodiments of the present invention.

[0057] According to an embodiment of the present invention, in one aspect, a wire harness fixing structure is provided, comprising:

[0058] Wiring harness box 1 has a slotted structure;

[0059] Cover plate 2 is placed on wire harness box 1. Cover plate 2 and wire harness box 1 together form a receiving space, which is suitable for accommodating wire harness 3.

[0060] Foaming adhesive 4 is disposed within the receiving space and is suitable for constraining the wire harness 3 between the wire harness box 1 and the cover plate 2.

[0061] By laying the wire harness 3 inside the grooved wire harness box 1 and then injecting foam fixing adhesive 4 to fully fill the space, the wire harness 3 is firmly fixed. Then, the cover plate 2 is covered to effectively avoid friction with the PET separator film of the battery cell and the sheet metal cover, ensuring that the wire harness 3 is stable and reliable in a small space.

[0062] Since the foamed fixing adhesive 4 is in a fluid state before solidification, it can effectively fill the irregular spaces inside the wire harness box 1. After solidification, it forms a tight wrap, ensuring that the wire harness 3 does not shift during transportation and vibration, and it does not occupy too much space in the height direction. This effectively solves the problem of limited height for wire harness arrangement and meets the arrangement requirements of narrow spaces. For example, the overall height of the wire harness fixing structure can be controlled within 8.9mm. It also makes reasonable use of the space in the width direction inside the battery pack, making the overall shape of the wire harness fixing structure more flat.

[0063] In this embodiment, the material of the foam fixing adhesive 4 can be a curable adhesive such as hot melt adhesive, structural adhesive, or silicone.

[0064] The wiring harness fixing structure provided in this embodiment of the utility model has a cover plate 2 and a wiring harness box 1 together forming a space suitable for accommodating the wiring harness 3. The wiring harness 3 is well fixed by the filling of foam fixing adhesive 4, so that it will not rub against adjacent parts. The wiring harness 3 is effectively and reliably fixed in the battery pack, realizing the isolation of the wiring harness 3 from the PET separator film of the battery cell and the top cover of the battery pack, avoiding wear on the wiring harness 3, and reducing the risk of leakage or even short circuit caused by the insulation of the wiring harness 3 being scratched.

[0065] Furthermore, since the foamed adhesive 4 is in a fluid state before solidification, it can effectively fill the irregular spaces within the wire harness box 1, penetrating deep into gaps. After solidification, it forms a tight wrap without occupying excessive space above the wire harness 3, thus providing excellent fixation for the wire harness and allowing it to be arranged within the limited space required by the product. Simultaneously, the guidance and constraint provided by the wire harness box 1 ensures a more rational routing and layout of the wire harness 3, avoiding interference with other components and guaranteeing their normal assembly and use; it also satisfies the convenience of processing, production, and transportation.

[0066] This embodiment rationally sets the size of the wire harness box 1 and the amount of foam fixing adhesive 4 according to the required number of wire harnesses 3 and the total cross-sectional area of ​​the arrangement space, ensuring that each wire harness 3 is effectively fixed. It also eliminates the need for wire harness cable ties and their fixing points, allowing the wire harnesses 3 to be arranged within a small space that meets product requirements, such as a longitudinal height limit of 8.9mm in some applications. Safety clearances are also provided for other components such as the battery cell PET separator film and the sheet metal cover. The wire harness box 1 and cover plate 2 serve as protective layers, effectively preventing wear and tear on the wire harnesses 3.

[0067] In related technologies, the methods of binding and securing wire harnesses using tape and cable ties are insufficient to meet the requirements for wire harness arrangement and fixation in confined spaces. This embodiment addresses this by evenly arranging the wire harness 3 within the wire harness box 1 and using expanding foam 4 to fill the gaps between wire harnesses 3 and between the wire harness 3 and the wire harness box 1, thus securing the wire harness 3 and preventing wear within the box. By eliminating the cable tie binding structure and fixing points, and precisely controlling the dimensions of the wire harness box 1, space in the vertical direction is effectively saved, enabling efficient wiring within limited spaces and conserving space resources within the battery pack.

[0068] Furthermore, compared to traditional tape wrapping and cable tie binding processes, the wire harness fixing structure in this embodiment reduces the complexity of materials and processes and lowers production costs through the use of wire harness box 1 and foam fixing adhesive 4.

[0069] During final assembly, the wiring harness box 1 and the wiring harness will be assembled and secured as a whole. Simply fixing the wiring harness box 1 to the battery cell will secure the wiring harness assembly within the battery pack. Furthermore, the wiring harness box 1 not only restrains and secures the wiring harness but also acts as an isolation layer between the wiring harness and other components.

[0070] In some embodiments, combined with Figure 2 As shown, multiple foamed adhesives 4 are provided in the accommodating space, and adjacent foamed adhesives 4 are spaced apart along the extension direction of the wire harness 3.

[0071] The foam fixing adhesive 4 does not need to completely fill the space. Only an appropriate amount needs to be filled. By applying the foam fixing adhesive 4 at intervals, the constraint effect on the wire harness 3 is ensured, while reducing material usage, further improving assembly efficiency and reducing costs.

[0072] In this embodiment, the foam fixing adhesive 4 can be set at approximately 20mm from each end of the wire harness box 1, and the middle part can be flexibly arranged according to the actual direction and spacing requirements of the wire harness 3, for example, one can be set every 100mm.

[0073] In some embodiments, the wire harness box 1 includes at least one isolation baffle 11, which is adapted to divide the accommodating space into a plurality of accommodating sub-spaces, and the extending direction of the isolation baffle 11 is parallel to the extending direction of the wire harness 3.

[0074] In this embodiment, the isolation baffle 11 extends upward from the bottom wall 13, and the number and position of the isolation baffle 11 can be flexibly adjusted according to the specific direction and distribution requirements of the wire harness 3 to further optimize the wire harness layout.

[0075] When it is necessary to branch wire harnesses in different directions from a single wire harness node, related technologies cannot perform stranded wiring within sleeves or cable trays, which can lead to wire harness crossing and confusion, or can only be fixed by adding additional sleeves or cable ties, resulting in complex wiring and space occupation. In this embodiment, with the assistance of the isolation baffle 11, wire harness branches in different directions are arranged in their respective receiving subspaces, ensuring that the wire harness branches are clear and orderly, avoiding cross interference, and improving wiring efficiency and safety.

[0076] The branching direction of wire harnesses is difficult to control accurately during production, which can easily lead to interference between the exit points and other components. This embodiment incorporates isolation baffles inside the wire harness box 1, with the baffle spacing rationally designed according to the number of branching wires. By adding these isolation baffles inside the wire harness box 1, the wire harness can be pre-separated into branches during wiring and placed at the corresponding designed positions, thereby accurately controlling the branching direction of the wire harness.

[0077] In some embodiments, one of the wire harness box 1 and the cover plate 2 is provided with a slot, and the other is provided with a corresponding buckle. The buckle is adapted to engage with the slot to fix the wire harness box 1 and the cover plate 2 together.

[0078] The tight fit between the slots and clips ensures a secure connection between the wiring harness box 1 and the cover plate 2, preventing loosening. This slot-and-clip design simplifies the assembly process, improves the overall structural stability, further optimizes the internal space utilization of the battery pack, and reduces the risk of wiring harness wear due to loosening.

[0079] Combination Figure 1 As shown, the slots and buckles are located on both sides of the wire harness box 1. This avoids occupying the internal space of the wire harness box and saves space in the height direction, effectively solving the problem of limited wire harness arrangement height.

[0080] In some embodiments, the wire harness box 1 includes a bottom wall 13 and a side wall 14 extending from one side of the bottom wall 13, and the latch includes a first hook 12 extending from the side wall 14 toward the side opposite to the wire harness 3.

[0081] The cover plate 2 includes a cover plate body 21 and an extension 23 extending from the cover plate body 21 toward the bottom wall 13. The extension 23 extends toward the wire harness 3 and forms a second hook 22. The cover plate body 21, the extension 23 and the second hook 22 together form a slot.

[0082] As a specific implementation of the slot and buckle cooperation, the first hook 12 and the second hook 22 are interlocked to form a stable snap-fit ​​structure, ensuring that the cover plate 2 fits tightly against the wire harness box 1 and preventing loosening due to vibration.

[0083] The cover body 21 extends toward the bottom wall 13, effectively covering the opening of the wire harness box 1, enhancing the sealing performance, preventing dust and moisture from entering, and saving space in the height direction.

[0084] In some embodiments, the wire harness box 1 includes a bottom wall 13, and the cover plate 2 includes a cover plate body 21, with the bottom wall 13 parallel to the cover plate body 21.

[0085] By ensuring that the bottom wall 13 is parallel to the cover body 21, deformation caused by the expansion of the foam fixing adhesive 4 can be avoided, ensuring the structural stability of the wire harness box and preventing the wire harness box 1 from exhibiting irregular deformation, thereby effectively guaranteeing the dimensions in the height direction.

[0086] Since the wire harness box 1 and the cover plate 2 are relatively thin, in order to avoid deformation caused by the expansion of the foam fixing adhesive 4, after the cover plate 2 is placed on the wire harness box 1, the entire wire harness fixing structure can be placed in the shaping fixture. In this way, while waiting for the foam fixing adhesive 4 to penetrate and cure, the overall structure is kept stable, and the dimensional deviation caused by the expansion and deformation of the wire harness box 1 and the cover plate 2 is avoided.

[0087] In some embodiments, the wire harness box 1 has an opening at at least one end along the extension direction of the wire harness 3, so that the wire harness 3 can pass through and / or pass out.

[0088] In some embodiments, the wire harness box 1 has openings at both ends along the extension direction of the wire harness 3.

[0089] By forming openings at both ends of the wire harness 3 along the extension direction of the wire harness box 1, it is easy to insert and pull out the wire harness 3 in both directions, which improves the assembly flexibility. At the same time, it ensures that the wire harness 3 is evenly distributed in the box, reduces the risk of damage to the wire harness due to bending or squeezing, and further optimizes the protection effect of the wire harness.

[0090] The wire harness fixing structure provided in this embodiment is used in the following specific way:

[0091] Based on the wiring space and wiring harness direction within the battery pack, a suitable wiring harness box 1 is designed, and an isolation baffle is pre-installed inside the wiring harness box 1 according to the number, branches, and direction of the wiring harnesses.

[0092] The pre-installed wire harness 3 is evenly arranged in the corresponding positions of the wire harness box 1, and the different wire harness branches are separated by the isolation baffle 11 to realize the stranded wiring of the wire harness 3 in the wire harness box 1.

[0093] In the wire harness box 1 after the wire harness 3 is arranged, the foam fixing adhesive 4 is evenly applied at the specified positions. The positions for applying the adhesive include: one line at each end of the wire harness box 1 20mm away from the beginning and end, and one line every 100mm.

[0094] Place the cover plate 2 onto the wire harness box 1 after the glue has been applied, and then place the whole assembly into the shaping fixture, waiting for the foam fixing adhesive 4 to penetrate and cure, thereby preventing the wire harness box 1 and the cover plate 2 from deforming due to the expansion of the foam fixing adhesive 4.

[0095] After the foaming adhesive 4 has cured, remove the entire wire harness fixing structure from the shaping fixture, and wrap the wire harness box opening with protective wrapping. The wrapping shape gradually transitions from an oval shape to a near-circular shape.

[0096] Complete the assembly and wrapping of the remaining parts of the wiring harness assembly.

[0097] The wire harness fixing structure provided in this embodiment has a highly flexible design specification, which can be flexibly adjusted according to the specific number of wire harnesses, layout space and branching requirements, and has strong versatility and adaptability.

[0098] The foaming adhesive 4 can not only fully fill the gaps between wire harnesses 3 and between wire harnesses 3 and wire harness box 1, but also form a stable structure after curing, effectively preventing the wires from loosening or wearing due to vibration or other external forces, thus enhancing the fixation and reliability of wire harnesses 3.

[0099] This embodiment reduces the need for traditional tape wrapping and cable tie binding by using a whole-body fixing and foaming process for the wire harness box 1, simplifying the production process and improving production efficiency. The wire harness 3 is stranded and arranged within the wire harness box 1, facilitating wrapping after the wire harness 3 exits the slot, reducing the difficulty of production operations, alleviating the burden on workers, and improving production efficiency. In addition, the consistency of the finished products is good, which is beneficial for product quality control.

[0100] In addition, the wire harness 3 is arranged in strands within the wire harness box 1. After the wire harness 3 exits the slot, the wrapping direction is consistent with the assembly direction, and the assembled product is simple and beautiful overall.

[0101] The wire harness box 1 acts as an isolation layer between the wire harness and other components, which can effectively prevent the wire harness from directly contacting or rubbing against other components such as the battery cell PET separator film and sheet metal cover, thereby improving overall safety, reducing the risk of poor battery pack insulation, short circuit or even leakage, and improving safety performance.

[0102] According to an embodiment of the present invention, another aspect provides a battery pack, comprising:

[0103] The box body and the top cover mounted on the box body;

[0104] The battery pack is housed inside the casing, and a first space is formed between the battery pack and the top cover.

[0105] The aforementioned wire harness fixing structure is installed within the first space.

[0106] According to an embodiment of the present invention, in another aspect, a vehicle is also provided, comprising:

[0107] The vehicle body, and the battery pack as described above, the battery pack being electrically connected to the vehicle body.

[0108] Obviously, the above embodiments are merely examples for clear illustration and are not intended to limit the implementation. Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and all such modifications and variations fall within the scope defined by the present invention.

Claims

1. A wire harness fixing structure, characterized in that, include: The wire harness box (1) has a slotted structure; A cover plate (2) is placed over the wire harness box (1). The cover plate (2) and the wire harness box (1) together form a receiving space, which is suitable for receiving the wire harness (3). Foamed fixing adhesive (4) is disposed within the receiving space, and the foamed fixing adhesive (4) is adapted to constrain the wire harness (3) between the wire harness box (1) and the cover plate (2).

2. The wire harness fixing structure according to claim 1, characterized in that, The accommodating space is provided with a plurality of foamed fixing adhesives (4), and adjacent foamed fixing adhesives (4) are spaced apart along the extension direction of the wire harness (3).

3. The wire harness fixing structure according to claim 1, characterized in that, The wire harness box (1) includes at least one isolation baffle (11) adapted to divide the accommodating space into a plurality of accommodating subspaces, the extending direction of the isolation baffle (11) being parallel to the extending direction of the wire harness (3).

4. The wire harness fixing structure according to claim 1, characterized in that, One of the wire harness box (1) and the cover plate (2) is provided with a slot, and the other is provided with a corresponding buckle. The buckle is adapted to engage with the slot to fix the wire harness box (1) and the cover plate (2) in place.

5. The wire harness fixing structure according to claim 4, characterized in that, The wire harness box (1) includes a bottom wall (13) and a side wall (14) extending from one side of the bottom wall (13), and the buckle includes a first hook (12) extending from the side wall (14) toward the side opposite to the wire harness (3); The cover plate (2) includes a cover plate body (21) and an extension (23) extending from the cover plate body (21) toward the bottom wall (13). The extension (23) extends toward the wire harness (3) and forms a second hook (22). The cover plate body (21), the extension (23) and the second hook (22) together form the slot.

6. The wire harness fixing structure according to claim 1, characterized in that, The wire harness box (1) includes a bottom wall (13), and the cover plate (2) includes a cover plate body (21). The bottom wall (13) is parallel to the cover plate body (21).

7. The wire harness fixing structure according to any one of claims 1 to 6, characterized in that, The wire harness box (1) has an opening at at least one end along the extension direction of the wire harness (3) so that the wire harness (3) can pass through and / or pass through.

8. The wire harness fixing structure according to claim 7, characterized in that, The wire harness box (1) has openings at both ends along the extension direction of the wire harness (3).

9. A battery pack, characterized in that, include: The box body and the top cover mounted on the box body; A battery pack is disposed inside the housing, and a first space is formed between the battery pack and the top cover; The wire harness fixing structure as described in any one of claims 1 to 8 is disposed within the first space.

10. A vehicle, characterized in that, include: The vehicle body, and the battery pack as described in claim 9, wherein the battery pack is electrically connected to the vehicle body.

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