Wire harness fixing device and method for new energy automobile battery pack

Abstract

The invention discloses a wire harness fixing device and method for a new energy automobile battery pack, and relates to the technical field of new energy automobile accessories. The wire harness fixing device and method for the new energy automobile battery pack comprises a single fixing assembly which supports parallel clamping of a plurality of wire harnesses; the fixed base is mounted in the new energy automobile battery pack in an attached manner, and the single fixed assembly is connected with the fixed base in a self-locking insertion manner; a plurality of wire harnesses can be separated and positioned on each single fixing assembly through a plurality of positioning pieces, the wire harnesses can be orderly arranged in the battery pack through the matching of the plurality of single fixing assemblies, wires on the single fixing assemblies are convenient to disassemble and assemble, and parts do not need to be disassembled due to the fact that fastening pieces such as bolts are not adopted for fixing, so that the cost is reduced. A large gap can be reserved only by pushing the positioning pieces to be staggered, wires can be conveniently taken and placed, meanwhile, the positioning pieces can move towards the side face in a small range along the arc grooves when being pushed, and therefore the distance can be enlarged in the two directions at the same time.

Description

Technical Field

[0001] This invention relates to the field of new energy vehicle parts technology, specifically to a wiring harness fixing device and method for new energy vehicle battery packs. Background Technology

[0002] The secure fixing of wiring harnesses within the battery pack of new energy vehicles is of paramount importance. It not only concerns the stability and safety of the wiring harnesses themselves, preventing them from becoming loose, worn, or even broken due to vibrations and bumps during vehicle operation, which could lead to short circuits, leakage, and other safety hazards, but also directly affects the accurate transmission of signals and electrical energy between various components within the battery pack. This ensures the normal operation of the battery management system and the stable performance of the entire vehicle's power system, making it a key link in ensuring the safe and reliable operation of new energy vehicles.

[0003] Currently, there are two common methods for securing battery pack wiring harnesses: one is to bundle a certain number of plastic cable ties around the harness and then snap the clips at the other end of the cable ties into the side beam holes of the battery pack to secure the harness; the other is to fabricate a plastic bracket and screw it onto the battery pack housing, then use an interference fit to snap the wiring harness into the slot of the plastic bracket. However, there are some problems with these methods. For example, the former requires cutting the cable ties each time the harness is disassembled, and the bundled harnesses can affect heat dissipation, leading to heat concentration and potential safety issues. The latter method, which uses a snap-fit ​​method, can easily damage the wire insulation and is laborious to install and remove.

[0004] Publication No. CN217544840U discloses a wiring harness fixing structure and a power battery pack, including a battery pack dividing beam and a clamping plate body; the top of the battery pack dividing beam is formed with a groove extending through both ends along its axial direction and suitable for accommodating the wiring harness; the clamping plate body is sealed on the groove and is detachably connected to the battery pack dividing beam, and the bottom wall of the clamping plate body is sprayed with an intumescent fire-retardant coating; wherein, at least one end of the clamping plate body is provided with a first connecting part between the corresponding end of the battery pack dividing beam, the first connecting part is used to restrict the X-direction freedom of the clamping plate body, and a plurality of second connecting parts are distributed at intervals along the X-direction between the bottom wall of the clamping plate body and the two side walls of the battery pack dividing beam, the second connecting parts are used to restrict the Y-direction freedom and Z-direction freedom of the clamping plate body.

[0005] As shown in the above technical description, while the wiring harness fixing structure inside the battery pack provides good fixation, it can only secure a single wiring harness and cannot simultaneously guide and fix multiple harnesses. If multiple harnesses are crammed into a single slot, heat buildup may occur. Furthermore, removing the wires requires disassembling the structure, which is inconvenient. The snap-fit ​​design of the clips and holes may also deform or wear after repeated disassembly, leading to insecure fastening. In addition, the device occupies a considerable amount of space and can only fix a single wire, resulting in low space utilization and making it unsuitable for compact installation conditions within battery packs. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a wiring harness fixing device and method for new energy vehicle battery packs, which solves the problems of poor fixing efficiency, difficulty in disassembly and assembly, and the possibility of insecure fastening due to deformation or wear after repeated disassembly, as well as low space utilization and unsuitability for compact installation conditions inside battery packs.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a wiring harness fixing device for a new energy vehicle battery pack, comprising:

[0008] A single fixing component, wherein the single fixing component supports the parallel clamping of multiple wire harnesses;

[0009] A fixed base is attached to the battery pack of a new energy vehicle, and a single fixing component is connected to the fixed base by a self-locking plug-in method. The single fixing component is unlocked by pulling it away from the fixed base and then axially sliding apart.

[0010] The single fixed component includes:

[0011] A fixing sleeve, the bottom of which is open and inserted into a fixing base, and the top of which is symmetrically provided with several rows of arc grooves, the radius of the outer arc grooves being smaller than the radius of the inner arc grooves.

[0012] The positioning plates are provided in multiple ways. The middle positioning plate is fixed to the top center of the fixing sleeve, and the positioning plates on both sides are slidably connected in the arc groove to restrict the wire harness between the positioning plates. The curvature of the positioning plate is consistent with the corresponding arc groove. The top of the positioning plate is fixedly connected to the wire harness release push plate. The multiple positioning plates are in the middle position with equal time intervals. After the positioning plate is pushed to one end of the arc groove, the distance between it and the adjacent positioning plate increases, so as to remove the wire harness.

[0013] The reset structure, installed at the bottom of the fixed sleeve, is used to elastically center and reset multiple positioning pieces.

[0014] Preferably, the reset structure includes:

[0015] A sliding block is disposed inside the fixed sleeve, and the top of the sliding block extends into the arc groove and is slidably connected to the arc groove. The positioning piece is inserted and installed on the top of the sliding block, and the bottom of the sliding block is fixedly connected with a screw.

[0016] The support plate is fixedly connected to the middle of the inner cavity of the fixed sleeve and is used to support the sliding block;

[0017] The elastic element is fixed at both ends to the bottom of the support plate and fixedly connected to the screw hole in the middle.

[0018] Preferably, the two ends of the elastic element are fixed to the bottom of the support plate by screws, and the support plate is integrally fixed to the top of the inner wall of the fixing sleeve. The middle part of the elastic element is fixedly connected to the screw hole by screws. The support plate has a through groove for the screw hole to pass through and slide.

[0019] Preferably, the fixed base includes a flat base, the top of the flat base is configured as a T-shaped slide, one end of the fixed sleeve is opened as a first sliding opening adapted to the longitudinal section of the T-shaped slide, one end of the T-shaped slide is opened as a flat notch, the other end of the T-shaped slide is opened as an angled notch, and the other end of the fixed sleeve is opened as a second sliding opening adapted to one end of the angled notch of the T-shaped slide.

[0020] Preferably, a lower magnet is embedded and fixedly connected to the top of the planar base, and an upper magnet is fixedly connected to the top of the support plate corresponding to the position of the lower magnet.

[0021] Preferably, the fixed base further includes a three-dimensional base. After the flat base is erected, it can be fitted onto both sides of the three-dimensional base to install a set of single fixing components on both sides of the three-dimensional base at the same time. Both sides of the three-dimensional base are provided with multiple rows of longitudinally arranged grooves, so that multiple cavities for penetrating wire harnesses are formed between the three-dimensional base and the flat base. Both sides of the three-dimensional base are provided with T-shaped inserts, and the bottom surface of the flat base is provided with T-shaped slots that are adapted to the T-shaped inserts.

[0022] Preferably, one end of the T-shaped insert has a bevel, the end of the T-shaped slot corresponding to the bevel of the T-shaped insert does not penetrate the end of the flat base, and the other end of the T-shaped slot is chamfered.

[0023] Preferably, double-sided adhesive tape or suction cups can be selectively installed on the bottom surface of both the three-dimensional base and the flat base. The bottom surface of both the three-dimensional base and the flat base is provided with a positioning groove that is compatible with the double-sided adhesive tape, and the positioning groove is also provided with an insertion hole for the suction cup head to be inserted and engaged.

[0024] Preferably, the flat base has a screw hole at one end near the beveled notch. When the flat base is installed on the side of the three-dimensional base, a limiting screw is screwed into the screw hole to prevent the fixing sleeve from sliding out.

[0025] This invention also discloses a method for using a wiring harness fixing device for a new energy vehicle battery pack, comprising the following steps:

[0026] S1. First, select the required number of wire harness fixing devices and put the fixing sleeve on the fixing base;

[0027] S2. Attach the mounting base to the battery pack with even spacing, following the direction of the wiring harness.

[0028] S3. Install the wire harness one by one between the positioning plates on the fixed sleeve. When installing, first push one of the positioning plates to one end, or push two adjacent positioning plates in opposite directions to increase the distance between the positioning plates. Then, tilt the wire harness and push it between the two positioning plates. After releasing your hand, the positioning plates will return to their original position, thus locking the wire harness. Repeat the operation until all the wire harnesses are installed.

[0029] This invention provides a wiring harness fixing device and method for battery packs in new energy vehicles. Compared with the prior art, it has the following advantages:

[0030] 1. This wiring harness fixing device for new energy vehicle battery packs uses multiple positioning plates on a single fixing component to separate and position multiple wiring harnesses. The cooperation of multiple single fixing components can neatly arrange the wiring harnesses within the battery pack, preventing heat concentration caused by the harnesses tangling together. Furthermore, the wiring harnesses on the single fixing component are easy to install and remove. Since no bolts or other fasteners are used for fixing, there is no need to disassemble parts; simply pushing the positioning plates to create a larger gap facilitates the placement and removal of wires. Simultaneously, the positioning plates move slightly to the side along the curved groove when pushed, thus simultaneously expanding the distance in two directions. They automatically reset after being released, making operation convenient. The single fixing component is connected to the flat base via a plug-in connection, allowing the single fixing component and wiring harness to be removed as a whole for necessary adjustments. A locking mechanism exists between the single fixing component and the flat base; the single fixing component cannot be pulled out when it is pressed down on the flat base. It must be lifted first and then smoothly pulled out to prevent it from slipping off on its own. A magnetic clamping mechanism provides a second layer of protection. Each unit is compact in structure, can be used in combination, can be stacked at will, takes up little space, and is flexible in combination.

[0031] 2. The wiring harness fixing device for new energy vehicle battery packs can further install the components of the first embodiment on both sides of the three-dimensional base by setting a three-dimensional base. This allows two sets of single fixing components to be used at one positioning point at the same time. Furthermore, two rows of positioning spaces can be formed between the single fixing components and the three-dimensional base, enabling the positioning of more wiring harnesses and upgrading the planar to three-dimensional structure to meet more needs.

[0032] 3. This wiring harness fixing device for new energy vehicle battery packs features two attachment structures: double-sided adhesive and suction cup. Depending on the installation conditions, it allows for selective switching between adhesive and vacuum suction installation methods, making it widely applicable and easy to install. Attached Figure Description

[0033] Figure 1 This is a first-view assembly diagram of the single fixed component and the planar base of the present invention;

[0034] Figure 2 This is a second-view assembly diagram of the single fixed component and the planar base of the present invention;

[0035] Figure 3 This is a schematic diagram of the single fixed component of the present invention in the lifted state;

[0036] Figure 4 This is a schematic diagram of the single fixed component of the present invention in a semi-extracted state;

[0037] Figure 5 This is a bottom perspective view of the single fixed component of the present invention;

[0038] Figure 6 This is an exploded view of the single fixing component and the planar base of the present invention;

[0039] Figure 7 This is an exploded view of the positioning plate and sliding block of the present invention;

[0040] Figure 8 This is an exploded view of the planar base, double-sided adhesive tape, and suction cup of the present invention;

[0041] Figure 9 This is an assembly drawing of the single fixing component and the fixing base of the present invention;

[0042] Figure 10 This is an exploded view of the planar base and the three-dimensional base of the present invention.

[0043] In the diagram: 1-Single fixed component, 11-Fixing sleeve, 12-Arc groove, 13-Positioning piece, 14-Push piece, 15-Sliding block, 16-Threaded opening, 17-Support plate, 18-Elastic element, 19-Screw, 110-Upper magnet, 111-First sliding opening, 112-Second sliding opening;

[0044] 2-Fixed base, 21-Flat base, 22-Flat notch, 23-Angled notch, 24-Lower magnet, 25-3D base, 26-T-shaped insert, 27-T-shaped slot, 28-Double-sided adhesive, 29-Suction cup, 210-Positioning groove, 211-Insertion hole, 212-Screw hole, 213-Limit screw. Detailed Implementation

[0045] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0046] See Figures 1-10 This invention discloses a wiring harness fixing device and method for new energy vehicle battery packs, and provides the following three technical solutions:

[0047] First implementation method: includes:

[0048] Single fixing component 1, which supports parallel clamping of multiple wire harnesses;

[0049] The fixed base 2 is attached to the battery pack of the new energy vehicle, and the single fixed component 1 is connected to the fixed base 2 by a self-locking plug-in method. The single fixed component 1 is unlocked by pulling away from the fixed base 2 and is axially slid apart.

[0050] Single fixed component 1 includes:

[0051] The fixing sleeve 11 has an open bottom that is inserted into the fixing base 2. Several rows of arc grooves 12 are symmetrically opened on the top of the fixing sleeve 11, and the radius of the arc grooves 12 on the outer side is smaller than the radius of the arc grooves 12 on the inner side. The top of the fixing sleeve 11 is located between the arc grooves 12. Anti-slip silicone can also be designed to improve the axial anti-slip function of the wire harness. Furthermore, the anti-slip silicone can be designed as dot matrix protrusions or as ridges perpendicular to the axial direction of the wire harness to improve the anti-slip effect.

[0052] Multiple positioning plates 13 are provided, made of materials with good thermal conductivity such as metal or ceramic, and have smooth sides to reduce wear on the wire harness during sliding. The positioning plate 13 in the middle is fixed to the top center of the fixing sleeve 11, and the positioning plates 13 on both sides are slidably connected in the arc groove 12 to restrict the wire harness between the positioning plates 13. The curvature of the positioning plate 13 is consistent with the corresponding arc groove 12. The top of the positioning plate 13 is fixedly connected to the push plate 14 that restricts the wire harness from detaching. The push plate 14 and the positioning plate 13 are integrally processed from the same material. The push plate 14 has anti-slip texture. The multiple positioning plates 13 are in the middle position with equal spacing. After the positioning plate 13 is pushed towards one end of the arc groove 12, the distance between it and the adjacent positioning plate 13 increases, so as to remove the wire harness.

[0053] A reset structure, installed at the bottom of the fixing sleeve 11, is used to elastically center and reset the multiple positioning pieces 13. The reset structure includes:

[0054] A sliding block 15 is disposed inside the fixed sleeve 11, and the top of the sliding block 15 extends into the arc groove 12 and is slidably connected to the arc groove 12. The sliding block 15 is made of wear-resistant material, and the inner surface of the arc groove 12 is treated with wear resistance. A positioning piece 13 is inserted and installed on the top of the sliding block 15, and a screw 16 is fixedly connected to the bottom of the sliding block 15. The screw 16 is integrally machined from the same material as the sliding block 15. To expel air from the positioning piece 13 when it is inserted into the sliding block 15, slits are also made at both corners of the positioning piece 13. Figure 7 As shown;

[0055] Support plate 17 is fixedly connected to the middle of the inner cavity of fixed sleeve 11 and is used to support sliding block 15;

[0056] The elastic element 18 is fixed at both ends to the bottom of the support plate 17 and fixedly connected to the screw hole 16 in the middle. The elastic element 18 is specifically a rubber band. The rubber band is made of silicone material and is relatively thin, which is equivalent to a spring and does not take up much space. The two ends of the elastic element 18 are fixed to the bottom of the support plate 17 by screws 19, and the support plate 17 is fixed to the top of the inner wall of the fixing sleeve 11 as a whole. The middle part of the elastic element 18 is fixedly connected to the screw hole 16 by screws 19. A through groove is opened in the support plate 17 for the screw hole 16 to pass through and slide. The inner wall of the through groove is also treated with wear resistance.

[0057] In this embodiment, the fixed base 2 includes a flat base 21. The top of the flat base 21 is configured as a T-shaped slide. One end of the fixed sleeve 11 is provided with a first sliding opening 111 that matches the longitudinal section of the T-shaped slide. One end of the T-shaped slide is provided with a flat notch 22, and the other end of the T-shaped slide is provided with an angled notch 23. The other end of the fixed sleeve 11 is provided with a second sliding opening 112 that matches one end of the angled notch 23 of the T-shaped slide. A lower magnet 24 is embedded and fixedly connected to the top of the flat base 21. The top surface of the lower magnet 24 does not extend beyond the top surface of the flat base 21, which can prevent the single fixed component 1 from being blocked and stuck by the lower magnet 24 when sliding. An upper magnet 110 is fixedly connected to the top of the support plate 17 corresponding to the position of the lower magnet 24.

[0058] The single fixing component 1 of this device can separate and position multiple wire harnesses through multiple positioning plates 13. The cooperation of multiple single fixing components 1 can neatly arrange the wire harnesses in the battery pack and prevent the wire harnesses from tangling together and concentrating heat. The wires on the single fixing component 1 are easy to install and remove. Since no bolts or other fasteners are used for fixing, there is no need to disassemble the parts. Simply push the positioning plates 13 to make them offset to create a larger gap, which is convenient for the placement and removal of wires. At the same time, when the positioning plates 13 are pushed, they will also move slightly to the side along the arc groove 12, thereby expanding the distance in two directions at the same time. After being released, they can automatically reset, making the operation convenient. At the same time, the single fixing component 1 is connected to the flat base 21 by a plug-in method. The single fixing component 1 and the wire harness can be removed directly as a whole for the necessary adjustments. There is also a locking mechanism between the single fixing component 1 and the flat base 21. When the single fixing component 1 is pressed down on the flat base 21, the single fixing component 1 cannot be pulled out. It can only be lifted first and then smoothly pulled out to prevent it from slipping off on its own. The use of a magnet to hold it in place provides a second layer of protection. Each unit is compact in structure, can be used in combination, can be stacked at will, takes up little space, and is flexible in combination.

[0059] The second embodiment differs from the first embodiment in that the fixed base 2 further includes a three-dimensional base 25. The flat base 21, when erected, can be fitted onto both sides of the three-dimensional base 25, allowing for the simultaneous installation of a single fixing component 1 on both sides of the three-dimensional base 25. Multiple rows of longitudinally arranged grooves are provided on both sides of the three-dimensional base 25. The inner surface of the grooves of the three-dimensional base 25 is smooth, reducing wear on the wire harness. Silicone can be placed in the grooves to increase resistance to the wire harness and prevent axial movement of the wire harness. However, it needs to be set as a dot-matrix silicone bump to maintain heat dissipation space around the wire harness, so that multiple cavities through the wire harness are formed between the three-dimensional base 25 and the flat base 21. Both sides of the base are provided with T-shaped inserts 26, and the bottom surface of the flat base 21 is provided with T-shaped slots 27 that are adapted to the T-shaped inserts 26. One end of the T-shaped insert 26 is beveled, and the end of the T-shaped slot 27 corresponding to the bevel of the T-shaped insert 26 does not penetrate the end of the flat base 21. The other end of the T-shaped slot 27 is chamfered. The non-penetrating design achieves the positioning effect. After being fully pushed into place, the end faces of the flat base 21 and the three-dimensional base 25 are aligned. The end of the flat base 21 near the beveled notch 23 is provided with a screw hole 212. When the flat base 21 is installed on the side of the three-dimensional base 25, the fixing sleeve 11 is restricted from sliding out by screwing a limiting screw 213 into the screw hole 212.

[0060] By further configuring the three-dimensional base 25, the components of the first embodiment can be installed on both sides of the three-dimensional base 25, thereby using two sets of single fixing components 1 at one positioning point. Furthermore, two rows of positioning spaces can be formed between the single fixing components 1 and the three-dimensional base 25, enabling the positioning of more wire harnesses, upgrading the plane to three-dimensional, and meeting more needs.

[0061] The third embodiment differs from the first embodiment in that: the bottom surfaces of both the three-dimensional base 25 and the flat base 21 can be fitted with double-sided adhesive tape 28 or suction cup 29. The bottom surfaces of both the three-dimensional base 25 and the flat base 21 are provided with positioning grooves 210 that are compatible with double-sided adhesive tape 28, and the positioning grooves 210 are also provided with insertion holes 211 for the head of suction cup 29 to be inserted and engaged.

[0062] By setting up two types of attachment structures, namely double-sided adhesive tape 28 and suction cup 29, the two installation methods, adhesive and vacuum adsorption, can be selectively changed according to the installation conditions. It has a wide range of applications and is simple and convenient to install.

[0063] This invention also discloses a method for using a wiring harness fixing device for a new energy vehicle battery pack, comprising the following steps:

[0064] S1. First, select the required number of wire harness fixing devices and put the fixing sleeve 11 on the fixing base 2. Then, first place one end of the first sliding opening 111 of the fixing sleeve 11 on the angled notch 23 of the flat base 21 and push the fixing sleeve 11 to the other end. At this time, the fixing sleeve 11 will slide up along the slope of the angled notch 23 and then slide along the flat base 21 until the fixing sleeve 11 and the flat base 21 are completely closed. Then, put down the fixing sleeve 11. After the fixing sleeve 11 slides down, the top of the first sliding opening 111 will be stuck at the flat notch 22, so the fixing sleeve 11 cannot slide out in the opposite direction.

[0065] S2. Attach the fixing base 2 evenly to the battery pack according to the wiring harness direction. You can choose to stick the double-sided adhesive 28 into the positioning groove 210 at the bottom of the flat base 21, so that the flat base 21 can be attached to the battery pack; or insert the suction cup 29 into the socket 211 to attach the flat base 21 to the battery pack.

[0066] S3. Install the wire harness one by one between the positioning pieces 13 on the fixed sleeve 11. During installation, first push one of the positioning pieces 13 to one end, or push two adjacent positioning pieces 13 in opposite directions to increase the distance between the positioning pieces 13. Then, tilt the wire harness and push it between the two positioning pieces 13. After releasing your hand, the elastic element 18 pulls the sliding block 15, which in turn pulls the positioning piece 13 back to its original position, thus locking the wire harness. Repeat the operation until all the wire harnesses are installed.

[0067] S4. If more wiring harnesses need to be installed, the three-dimensional base 25 can be used to insert two flat bases 21, and the limiting screws 213 can be screwed into the screw holes 212 at the ends of the flat bases 21 to block the ends of the fixing sleeves 11 and prevent them from being pulled out. Before insertion, the wiring harness can be placed between the three-dimensional base 25 and the flat base 21, and then the wiring harness can be installed on the fixing sleeves 11 on both sides. Finally, in the same way as in S3, the three-dimensional base 25 can be fixed in the battery pack using double-sided tape 28 or suction cup 29.

[0068] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0069] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0070] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wiring harness fixing device for a battery pack of a new energy vehicle, characterized in that, include: A single fixing component, wherein the single fixing component supports the parallel clamping of multiple wire harnesses; A fixed base is attached to the battery pack of a new energy vehicle, and a single fixing component is connected to the fixed base by a self-locking plug-in method. The single fixing component is unlocked by pulling it away from the fixed base and then axially sliding apart. The single fixed component includes: A fixing sleeve, the bottom of which is open and inserted into a fixing base, and the top of which is symmetrically provided with several rows of arc grooves, the radius of the outer arc grooves being smaller than the radius of the inner arc grooves. The positioning plates are provided in multiple ways. The middle positioning plate is fixed to the top center of the fixing sleeve, and the positioning plates on both sides are slidably connected in the arc groove to restrict the wire harness between the positioning plates. The curvature of the positioning plate is consistent with the corresponding arc groove. The top of the positioning plate is fixedly connected to the wire harness release push plate. The multiple positioning plates are in the middle position with equal time intervals. After the positioning plate is pushed to one end of the arc groove, the distance between it and the adjacent positioning plate increases, so as to remove the wire harness. The reset structure, installed at the bottom of the fixed sleeve, is used to elastically center and reset multiple positioning pieces.

2. The wiring harness fixing device for a new energy vehicle battery pack according to claim 1, characterized in that: The reset structure includes: A sliding block is disposed inside the fixed sleeve, and the top of the sliding block extends into the arc groove and is slidably connected to the arc groove. The positioning piece is inserted and installed on the top of the sliding block, and the bottom of the sliding block is fixedly connected with a screw. The support plate is fixedly connected to the middle of the inner cavity of the fixed sleeve and is used to support the sliding block; The elastic element is fixed at both ends to the bottom of the support plate and fixedly connected to the screw hole in the middle.

3. A wiring harness fixing device for a new energy vehicle battery pack according to claim 2, characterized in that: The elastic element is fixed to the bottom of the support plate at both ends by screws, and the support plate is integrally fixed to the top of the inner wall of the fixing sleeve. The middle part of the elastic element is fixedly connected to the screw hole by screws. The support plate has a through groove for the screw hole to pass through and slide.

4. A wiring harness fixing device for a new energy vehicle battery pack according to claim 2, characterized in that: The fixed base includes a flat base, the top of which is configured as a T-shaped slide. One end of the fixed sleeve is provided with a first sliding opening adapted to the longitudinal section of the T-shaped slide. One end of the T-shaped slide is provided with a flat notch, and the other end of the T-shaped slide is provided with an angled notch. The other end of the fixed sleeve is provided with a second sliding opening adapted to one end of the angled notch of the T-shaped slide.

5. A wiring harness fixing device for a new energy vehicle battery pack according to claim 4, characterized in that: A lower magnet is embedded and fixedly connected to the top of the flat base, and an upper magnet is fixedly connected to the top of the support plate at the position corresponding to the lower magnet.

6. A wiring harness fixing device for a new energy vehicle battery pack according to claim 4, characterized in that: The fixed base also includes a three-dimensional base. After the flat base is erected, it can be fitted onto both sides of the three-dimensional base to install a set of single fixing components on both sides of the three-dimensional base at the same time. Both sides of the three-dimensional base are provided with multiple rows of longitudinally arranged grooves, so that multiple cavities for penetrating wire harnesses are formed between the three-dimensional base and the flat base. Both sides of the three-dimensional base are provided with T-shaped inserts, and the bottom surface of the flat base is provided with T-shaped slots that are adapted to the T-shaped inserts.

7. A wiring harness fixing device for a new energy vehicle battery pack according to claim 6, characterized in that: One end of the T-shaped insert has a bevel, the end of the T-shaped slot corresponding to the bevel of the T-shaped insert does not penetrate the end of the flat base, and the other end of the T-shaped slot is chamfered.

8. A wiring harness fixing device for a new energy vehicle battery pack according to claim 6, characterized in that: Both the three-dimensional base and the flat base can be fitted with double-sided adhesive or suction cups on their bottom surfaces. Both the three-dimensional base and the flat base have positioning grooves that are compatible with double-sided adhesive, and the positioning grooves also have insertion holes for the suction cup head to be inserted and engaged.

9. A wiring harness fixing device for a new energy vehicle battery pack according to claim 6, characterized in that: The flat base has a screw hole at one end near the beveled notch. When the flat base is installed on the side of the three-dimensional base, the fixing sleeve is prevented from sliding out by screwing a limiting screw into the screw hole.

10. A method of using a wiring harness fixing device for a new energy vehicle battery pack according to any one of claims 1-9, characterized in that: Includes the following steps: S1. First, select the required number of wire harness fixing devices and put the fixing sleeve on the fixing base; S2. Attach the mounting base to the battery pack with even spacing, following the direction of the wiring harness. S3. Install the wire harness one by one between the positioning plates on the fixed sleeve. When installing, first push one of the positioning plates to one end, or push two adjacent positioning plates in opposite directions to increase the distance between the positioning plates. Then, tilt the wire harness and push it between the two positioning plates. After releasing your hand, the positioning plates will return to their original position, thus locking the wire harness. Repeat the operation until all the wire harnesses are installed.

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