A harness insulation fixing device in a battery pack and a battery pack
Patent Information
- Application Number
- CN202522594187.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-05
- Publication Date
- 2026-10-30
- Estimated Expiration
- 2035-12-05
AI Technical Summary
[0002]在现有电池包设计中，线束普遍采用沿电池模组左右两侧或底部走线的方式，这种传统布局在实际应用中暴露出诸多弊端：首先，在将电池模组装入铝制壳体过程中，侧向引出的线束极易与壳体内壁、加强筋或冷却流道发生干涉，不仅增加装配阻力，还可能因强行压装导致线束绝缘层破损或焊点受力开裂，严重影响生产效率与产品一致性；此外，侧边布线在振动工况下易产生晃动、摩擦，长期使用可能造成绝缘磨损甚至短路，同时杂乱的线束走向还可能阻碍冷却介质流动，干扰电池模组热管理性能
[0016](1)、由绝缘材料(PBT或PPS等耐高温阻燃工程塑料)一体成型的绝缘板。绝缘板具有相对设置的安装面与抵接面。其中，绝缘板位于电池模组的上方，其上开设有走线槽。与传统将线束布置于电池模组左右两侧的方式不同，本实施例将线束整体排布于电池模组的上方区域，并通过走线槽进行集中引导和限位。在走线槽内部，设置有多个束线部，用于将线束牢固的固定于走线槽内，防止其在运输或使用过程中发生位移、晃动或磨损；
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Figure CN224922890U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of battery technology, and in particular relates to a battery pack wiring harness insulation fixing device and a battery pack. Background Technology
[0002] In existing battery pack designs, wiring harnesses are generally routed along the left and right sides or bottom of the battery module. This traditional layout has revealed many drawbacks in practical applications: First, during the process of assembling the battery module into the aluminum housing, the side-outgoing wiring harnesses are prone to interference with the inner wall of the housing, reinforcing ribs, or cooling channels. This not only increases assembly resistance but may also cause damage to the wiring harness insulation layer or cracking of the solder joints due to forced pressing, seriously affecting production efficiency and product consistency. In addition, side wiring is prone to shaking and friction under vibration conditions, which may cause insulation wear or even short circuits after long-term use. At the same time, messy wiring harness routing may also hinder the flow of cooling medium and interfere with the thermal management performance of the battery module. Utility Model Content
[0003] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a battery pack that arranges the wiring harness uniformly on one side.
[0004] The objective of this utility model can be achieved through the following technical solution: a battery pack internal wiring harness insulation fixing device, comprising:
[0005] An insulating board, made of insulating material, is used to fix it onto a battery module. It includes a mounting surface and an abutment surface arranged opposite to each other. A wiring groove for accommodating wire harnesses is provided on the mounting surface. A wire harness portion for fixing the wire harnesses in the wiring groove is fixedly provided in the wiring groove. An abutment portion for abutting against a nickel sheet is provided on the mounting surface.
[0006] In the aforementioned battery pack wiring harness insulation fixing device, the abutting part includes a plurality of abutting protrusions protruding from the mounting surface, and the abutting protrusions correspond one-to-one with the nickel sheets on the battery module.
[0007] In the aforementioned battery pack wiring harness insulation fixing device, a gap is provided between two adjacent abutting protrusions.
[0008] In the aforementioned battery pack wiring harness insulation fixing device, multiple positioning posts are provided at the side edge of the insulation plate, and positioning holes are provided on the battery module, so that the positioning posts can be inserted and fixed into the positioning holes.
[0009] In the aforementioned battery pack wiring harness insulation and fixing device, the wiring harness portion includes a wiring harness groove and / or a wiring harness clip, the wiring harness passes through the wiring harness groove and is snapped into the wiring harness groove; the wiring harness clip is provided with fasteners for connecting with the wiring harness.
[0010] In the aforementioned battery pack internal wiring harness insulation fixing device, the wiring harness buckle is provided with a through connection hole, and the fastener includes a cable tie, which passes through the connection hole and is then secured to the wiring harness.
[0011] In the aforementioned battery pack wiring harness insulation fixing device, a plurality of lead grooves for the wiring harness to pass through are provided at intervals on the side edge of the insulation plate.
[0012] In the aforementioned battery pack wiring harness insulation fixing device, multiple sets of spaced fixing parts are provided on the mounting surface. Each set of fixing parts includes two spaced fixing plates, and a wiring groove is formed between two adjacent fixing plates.
[0013] In the aforementioned battery pack wiring harness insulation fixing device, at least some adjacent fixing plates in adjacent fixing parts are fixedly connected by at least one reinforcing plate.
[0014] A battery pack includes the aforementioned internal wiring harness insulation and fixing device.
[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0016] (1) An insulating plate integrally molded from insulating material (such as PBT or PPS high-temperature resistant and flame-retardant engineering plastics). The insulating plate has a mounting surface and abutment surface arranged opposite to each other. The insulating plate is located above the battery module and has a wiring groove. Unlike the traditional method of arranging the wire harness on the left and right sides of the battery module, this embodiment arranges the wire harness as a whole in the upper area of the battery module and guides and limits it centrally through the wiring groove. Inside the wiring groove, there are multiple wire harnessing parts to firmly fix the wire harness in the wiring groove and prevent it from shifting, shaking or abrading during transportation or use;
[0017] (2) By uniformly arranging the wiring harnesses above the module, assembly resistance is significantly reduced and the smoothness of insertion into the housing is improved. When it is necessary to replace the acquisition line or inspect the BMS connection point, there is no need to disassemble the side structural components or flip the module. All wiring harnesses can be directly accessed by simply opening the cover from the top, which greatly shortens maintenance time. Attached Figure Description
[0018] Figure 1 This is one of the three-dimensional structural diagrams of the wiring harness insulation fixing device inside the battery pack;
[0019] Figure 2 yes Figure 1 Another perspective illustration.
[0020] In the diagram, 100 is the insulating board; 101 is the mounting surface; 102 is the contact surface; 103 is the cable tray; 104 is the contact part; 105 is the positioning post; 106 is the cable tray; 107 is the cable tie; 108 is the lead cable tray; 109 is the fixing plate; and 110 is the reinforcing plate. Detailed Implementation
[0021] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.
[0022] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.
[0023] like Figure 1 and Figure 2 As shown, a wiring harness insulation fixing device inside a battery pack includes:
[0024] An insulating board 100, made of insulating material, is used to fix it on a battery module. It includes a mounting surface 101 and an abutment surface 102 disposed opposite to each other. A wiring groove 103 for accommodating wire harnesses is provided on the mounting surface 101. A wire harness portion for fixing the wire harnesses in the wiring groove 103 is fixedly provided in the wiring groove 103. An abutment portion 104 for abutting against a nickel sheet is provided on the mounting surface 101.
[0025] In this embodiment, an insulating plate 100 is integrally molded from an insulating material (such as PBT or PPS, a high-temperature resistant and flame-retardant engineering plastic). The insulating plate 100 has a mounting surface 101 and an abutment surface 102 that are disposed opposite to each other. The insulating plate 100 is located above the battery module and has a wiring groove 103 formed thereon. Unlike the traditional method of arranging wire harnesses on the left and right sides of the battery module, this embodiment arranges the wire harnesses as a whole in the upper area of the battery module and guides and limits them centrally through the wiring groove 103. Inside the wiring groove 103, multiple wire-binding parts are provided to firmly fix the wire harnesses within the wiring groove 103, preventing them from shifting, shaking, or wearing during transportation or use.
[0026] By uniformly arranging the wiring harnesses above the module, assembly resistance is significantly reduced and insertion into the housing is smoother. When it is necessary to replace the data acquisition line or inspect the BMS connection point, there is no need to disassemble the side structural components or flip the module. All wiring harnesses can be directly accessed simply by opening the cover from above, greatly shortening maintenance time.
[0027] An abutment portion 104 is provided at one end of the mounting surface 101 near the cell terminal. For example... Figure 2As shown, the abutment portion 104 is not a continuous plane, but is composed of multiple abutment protrusions protruding from the mounting surface 101. The position, number, and height of each abutment protrusion correspond precisely to the corresponding nickel sheet on the battery module, ensuring that each nickel sheet can be accurately placed on its dedicated abutment protrusion during assembly.
[0028] Furthermore, a gap is provided between two adjacent abutting protrusions (e.g. Figure 2 (The gap area shown). This spacing makes each abutting protrusion structurally independent, avoiding the formation of a monolithic abutting surface 102. Due to shrinkage deformation during injection molding, slight differences in battery module manufacturing tolerances, or nickel sheet installation height, a monolithic abutting structure can easily lead to some areas not being able to fully contact the nickel sheet, resulting in local gaps, which in turn affects welding quality and may even cause the risk of incomplete connections.
[0029] Furthermore, multiple positioning posts 105 are provided at the side edge of the insulating plate 100. Correspondingly, positioning holes are provided at the corresponding positions of the battery module. During assembly, the positioning posts 105 can be pre-inserted into the positioning holes to achieve rapid alignment and initial positioning between the insulating plate 100 and the battery module, effectively preventing lateral offset or angular misalignment during installation.
[0030] Specifically, each positioning post 105 has an axially oriented screw hole (such as a countersunk screw hole or a through hole for nut fitting). After the positioning post 105 is inserted into the positioning hole, the insulating plate 100 can be screwed to the battery module by passing a screw through the screw hole on the battery module, forming a dual fixing structure of "insertion positioning + screw locking".
[0031] like Figure 1 As shown, the wire harness can be provided in the form of a wire harness groove 106, a wire harness buckle 107, or a combination of the two, within the wire routing groove 103 or at its edge, to securely bind the acquisition wire harness to the insulating plate 100, preventing it from shifting, loosening, or rubbing against other components during transportation, vibration, or thermal cycling.
[0032] The cable tray 103 is fixedly equipped with a cable tray plate, and the cable harness tray 106 is a concave slot formed on the cable tray plate, the cross-sectional shape of which is adapted to the outer diameter of the cable harness. During assembly, the cable harness can be directly embedded into the cable harness tray 106, and the clamping and fixing are achieved by the limiting effect of the tray wall. The structure is simple, requires no additional parts, and is suitable for cable harness segments with the same wire diameter and fixed route.
[0033] On the other hand, the cable tie 107 is a protruding structure extending upward from the mounting surface 101, with a through connection hole at its end. In practical use, cable ties are used as fasteners, passing through the connection hole and tightening the cable harness, thereby firmly securing the cable harness to the cable tie 107. The cable ties can be nylon cable ties, metal cable ties, or disposable plastic cable ties with locking function, offering advantages such as convenient installation, reliable locking, and low cost.
[0034] The cable tray 106 is suitable for regularly arranged main cable bundles, enabling quick embedded fixing; the cable clip 107, together with the cable tie, is suitable for the centralized bundling of branch lines, different diameter lines or multiple cable bundles. The two can be combined as needed to improve the versatility and adaptability of the device.
[0035] like Figure 1 As shown, multiple lead-wire grooves 108 are spaced apart at the side edge of the insulating plate 100. The lead-wire grooves 108 are notches or U-shaped recesses extending along the thickness direction of the insulating plate 100, and their positions correspond one-to-one with the lead-out paths of the various data acquisition harnesses on the battery module. During assembly, after the data acquisition harnesses are led out from the tabs or nickel plates of the battery module, they do not directly bypass the outer edge of the insulating plate 100, but instead pass through the corresponding lead-wire grooves 108 into the wiring grooves 103 above the insulating plate 100, and are then secured by a wiring harness (such as a wiring groove 106 or a wiring buckle 107 in conjunction with a cable tie).
[0036] During the overall battery pack packaging process, the insulating plate 100 needs to be tightly attached to the battery module and placed inside the aluminum housing. Without the lead groove 108, the wire harness would be clamped between the side of the insulating plate 100 and the inner wall of the battery pack, making it highly susceptible to compression, bending, or even cuts during screw tightening or housing press-fitting, leading to insulation damage or wire breakage. By setting the lead groove 108, the wire harness can naturally transition from inside the groove to above the insulating plate 100, completely avoiding the stress area and significantly improving the safety of the wire harness. The lead groove 108 guides and limits the entry position of the wire harness, preventing the wire harness from becoming scattered, crossing, or tangled, which is conducive to achieving standardized and modular wiring, improving production line assembly efficiency and appearance consistency.
[0037] like Figure 1 As shown, multiple sets of spaced-apart fixing parts are provided on the mounting surface 101 of the insulating board 100. Each set of fixing parts includes two parallel and spaced-apart fixing plates 109, with a cable tray 103 formed between the two fixing plates 109 to accommodate and limit the acquisition wire harness. This allows the wire harness to continuously pass through each cable tray 103 along a predetermined path, achieving neat and orderly overhead wiring.
[0038] Furthermore, to enhance the overall structural rigidity and prevent deformation or cracking of the fixing plate 109 during injection molding or use, at least some adjacent fixing parts are fixedly connected by at least one reinforcing plate 110. The reinforcing plate 110 is laterally disposed between the corresponding fixing plates 109 of adjacent fixing parts (for example, connecting the rear fixing plate 109 of the previous group of fixing parts with the front fixing plate 109 of the next group of fixing parts), forming an "I", "H" shaped or grid-like reinforcing rib structure (see figure).
[0039] A battery pack includes the aforementioned internal wiring harness insulation and fixing device.
[0040] It should be noted that in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly defined. The terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise explicitly defined. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0041] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0042] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.
Claims
1. A battery pack internal wiring harness insulation fixing device, characterized in that, include: An insulating board, made of insulating material, is used to fix it onto a battery module. It includes a mounting surface and an abutment surface arranged opposite to each other. A wiring groove for accommodating wire harnesses is provided on the mounting surface. A wire harness portion for fixing the wire harnesses in the wiring groove is fixedly provided in the wiring groove. An abutment portion for abutting against a nickel sheet is provided on the mounting surface.
2. The battery pack internal wiring harness insulation fixing device according to claim 1, characterized in that, The abutting part includes a plurality of abutting protrusions protruding from the mounting surface, and the abutting protrusions correspond one-to-one with the nickel strips on the battery module.
3. The battery pack internal wiring harness insulation fixing device according to claim 2, characterized in that, A gap is provided between two adjacent abutting protrusions.
4. The battery pack internal wiring harness insulation fixing device according to claim 1, characterized in that, Multiple positioning posts are provided on the side edge of the insulating plate, and positioning holes are provided on the battery module. The positioning posts can be inserted into the positioning holes for fixation.
5. The battery pack internal wiring harness insulation fixing device according to claim 1, characterized in that, The cable harness includes a cable harness groove and / or a cable harness clip, through which the cable harness passes and is snapped into the cable harness groove; the cable harness clip is provided with a fastener for connecting to the cable harness.
6. The battery pack internal wiring harness insulation fixing device according to claim 5, characterized in that, The cable tie has a through connection hole, and the fastener includes a cable tie, which passes through the connection hole and is then secured to the cable harness.
7. The battery pack internal wiring harness insulation fixing device according to claim 1, characterized in that, The insulating plate has multiple lead grooves spaced apart at its side edges for wire harnesses to pass through.
8. The battery pack internal wiring harness insulation fixing device according to claim 1, characterized in that, The mounting surface is provided with multiple sets of spaced fixing parts, each set of fixing parts including two spaced fixing plates, and a wiring groove is formed between two adjacent fixing plates.
9. The battery pack internal wiring harness insulation fixing device according to claim 8, characterized in that, At least some of the adjacent fixing parts are fixedly connected by at least one reinforcing plate.
10. A battery pack, characterized in that, Includes the battery pack internal wiring harness insulation fixing device as described in any one of claims 1-9 above.