New energy automobile BMS signal acquisition flame-retardant wire harness structure

Abstract

The utility model relates to the technical field of BMS signal acquisition wire harnesses, in particular to a new energy automobile BMS signal acquisition flame-retardant wire harness structure which comprises a BMS signal acquisition wire harness and a wire harness flame-retardant structure body, a flame-retardant corrugated pipe is arranged on the wire harness flame-retardant structure body, and hard end pipes are integrally arranged at the two ends of the flame-retardant corrugated pipe respectively. A first cable positioning seat and a second cable positioning seat which are clamped with each other are further arranged on the wire harness flame-retardant structure main body, and the first cable positioning seat is formed by rotationally connecting two symmetrical structures. The new energy automobile BMS signal acquisition flame-retardant wire harness structure can reliably fix the part, between the connectors, of the wire harness, the flame-retardant corrugated pipe is adopted for external overall protection, meanwhile, the center protection hose with the heat conduction function is arranged on the inner side of the flame-retardant corrugated pipe, cooling protection treatment can be assisted for the wire harness, and the service life of the wire harness is prolonged. Mutual interference among the wire harnesses is effectively avoided, and the flame-retardant effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of BMS signal acquisition wiring harness technology, specifically a flame-retardant wiring harness structure for BMS signal acquisition in new energy vehicles. Background Technology

[0002] The Battery Management System (BMS) of new energy vehicles is a key component that ensures the safe and efficient operation of the battery. The BMS signal acquisition harness is a crucial component in electric or hybrid vehicles used to connect the battery pack to the BMS. Its main function is to ensure that various parameters of the battery pack (such as voltage, current, and temperature) are accurately transmitted to the BMS so that the system can effectively monitor and manage the battery, ensuring safe operation and extending its service life.

[0003] Existing BMS signal acquisition harnesses for new energy vehicles typically consist of conductive cores, insulation layers, shielding layers, sheaths, and connectors. Electrical faults, mechanical damage, chemical corrosion, and improper installation of the harness can lead to fires. Therefore, flame retardants are usually added to the sheath to achieve flame retardancy. However, when multiple harnesses are integrated onto a single connector and secured with cable ties, clips, etc., the temperature can rise if the harness lacks an efficient heat dissipation structure, posing a fire hazard. Furthermore, the lack of sufficient heat dissipation space between the harnesses means that a problem in one harness can affect the others, necessitating the replacement of the entire harness and increasing maintenance costs. Utility Model Content

[0004] The purpose of this utility model is to provide a flame-retardant wiring harness structure for BMS signal acquisition in new energy vehicles, in order to solve the problems mentioned in the background art, where the flame-retardant wiring harnesses for BMS signal acquisition in new energy vehicles on the market are integrated together without an efficient heat dissipation structure, which can cause the risk of combustion due to temperature rise. Furthermore, if one wiring harness has a problem, it will affect the other wiring harnesses, requiring the entire wiring harness to be replaced and increasing maintenance costs.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a flame-retardant wiring harness structure for BMS signal acquisition in new energy vehicles, comprising a BMS signal acquisition wiring harness and a flame-retardant structure body. The flame-retardant structure body is provided with a flame-retardant corrugated tube, and both ends of the flame-retardant corrugated tube are integrally provided with rigid end tubes. The flame-retardant structure body is also provided with a first cable positioning seat and a second cable positioning seat that engage with each other. The first cable positioning seat is composed of two symmetrical structures rotatably connected. The outer rings of the first cable positioning seat and the second cable positioning seat are respectively provided with equally spaced cable clamping grooves of the same size. The second cable positioning seat is also provided with an insertion limiting hole in the middle, and a central protective flexible tube engages between the insertion limiting holes. The first cable positioning seat is respectively clamped in the rigid end tubes at both ends, and the central protective flexible tube is located inside the flame-retardant corrugated tube.

[0006] Preferably, the BMS signal acquisition harness is provided with connectors, and cables are installed between the connectors.

[0007] Preferably, the flame-retardant corrugated tube is located between the connectors and is sleeved on the outside of the cable.

[0008] Preferably, the inner ring of the first cable positioning seat is provided with integrally formed snap-fit ​​protrusions, and the snap-fit ​​protrusions are trapezoidal in shape.

[0009] Preferably, the outer ring of the second cable positioning seat is provided with slots spaced apart, and the locking protrusion is interference-fitted with the second cable positioning seat through the slots.

[0010] Preferably, the insertion limiting hole is a T-shaped through hole, and the central protective hose is made of a heat-conducting material.

[0011] Compared with existing technologies, the beneficial effects of this utility model are as follows: This flame-retardant wiring harness structure for BMS signal acquisition in new energy vehicles can reliably fix the wiring harness at the connector points and uses a flame-retardant corrugated tube for overall external protection. Simultaneously, a central protective flexible tube with heat-conducting function is installed inside the flame-retardant corrugated tube to assist in cooling and protecting the wiring harness, effectively preventing mutual interference between wiring harnesses and improving the flame-retardant effect. This flame-retardant wiring harness structure for BMS signal acquisition in new energy vehicles uses a cable positioning seat with a cable clamping groove to separately clamp and position the cables, allowing the cables at both ends of the flame-retardant corrugated tube to be separated. Furthermore, by increasing the cooling performance inside the flame-retardant corrugated tube, the overall flame-retardant protection effect is enhanced. Attached Figure Description

[0012] Figure 1 This is a side view of a flame-retardant wiring harness structure for BMS signal acquisition in a new energy vehicle, according to this utility model.

[0013] Figure 2This is a schematic diagram of the cross-sectional structure of a flame-retardant wiring harness for BMS signal acquisition in a new energy vehicle according to this utility model.

[0014] Figure 3 This is a schematic diagram of the second cable positioning seat structure of a flame-retardant wiring harness structure for BMS signal acquisition in a new energy vehicle according to this utility model.

[0015] Figure 4 This is a schematic diagram of the first cable positioning seat structure of a flame-retardant wiring harness structure for BMS signal acquisition in a new energy vehicle according to this utility model.

[0016] In the diagram: 1. BMS signal acquisition harness; 101. Cable; 102. Connector; 2. Main body of the harness flame-retardant structure; 3. Flame-retardant corrugated pipe; 4. Central protective flexible hose; 5. First cable positioning seat; 6. Rigid end tube; 7. Snap-fit ​​protrusion; 8. Cable slot; 9. Second cable positioning seat; 10. Insertion limiting hole; 11. Slot. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-4This utility model provides a technical solution: a flame-retardant wiring harness structure for BMS signal acquisition in new energy vehicles, including a BMS signal acquisition wiring harness 1 and a flame-retardant structure body 2. The flame-retardant structure body 2 is provided with a flame-retardant corrugated tube 3. The BMS signal acquisition wiring harness 1 is provided with connectors 102, and cables 101 are installed between the connectors 102. In this structure, the BMS signal acquisition wiring harness 1 integrates the cables 101 using connectors 102. Multiple cables 101 are provided, each for acquiring signals such as voltage, current, and temperature. The flame-retardant corrugated tube 3 has integrally formed rigid end tubes 6 at both ends, and the flame-retardant corrugated tube 3 is located between the connectors 102. The flame-retardant corrugated tube 3 is sleeved on the outside of the cable 101. This structure provides overall external protection for the cable 101 through the flame-retardant corrugated tube 3. At the same time, the flame-retardant corrugated tube 3 serves to position the first cable positioning seat 5, ensuring that the ends of the cable 101 are separated from each other and providing a reliable positioning structure. The main body 2 of the wire harness flame-retardant structure is also provided with a first cable positioning seat 5 and a second cable positioning seat 9 that engage with each other. The first cable positioning seat 5 is composed of two symmetrical structures that are rotatably connected. The inner ring of the first cable positioning seat 5 is provided with integrally formed snap-fit ​​protrusions 7, and the snap-fit ​​protrusions 7 are trapezoidal in structure. This structure allows the first cable positioning seat 5 to be rotatable so that the first cable The positioning seat 5 is fixed to the outside of the second cable positioning seat 9, providing a stable positioning for the cable 101 on the outer ring of the second cable positioning seat 9, and facilitating assembly and fixation. The outer rings of the first cable positioning seat 5 and the second cable positioning seat 9 are each evenly spaced with identical cable-holding grooves 8, and the second cable positioning seat 9 also has an insertion limiting hole 10 in the center. The outer ring of the second cable positioning seat 9 is also spaced with slots 11, and the locking protrusions 7 are press-fitted into the second cable positioning seat 9 through the slots 11. This structure allows the first cable positioning seat 5 to be tightly fitted with the second cable positioning seat 9. The combined arrangement of the first cable positioning seat 5 and the second cable positioning seat 9 also maximizes… The structure can secure multiple fixed cables 101, while the external environment can prevent the cables 101 inside the flame-retardant corrugated pipe 3 from being affected, thus improving the flame-retardant protection of the cables 101 and reducing the possibility of damage to the cables 101. Furthermore, a central protective hose 4 is engaged between the insertion limiting holes 10, and the first cable positioning seat 5 is respectively engaged in the rigid end tubes 6 at both ends. The central protective hose 4 is located inside the flame-retardant corrugated pipe 3. The insertion limiting hole 10 is a T-shaped through hole, and the central protective hose 4 is made of a heat-conducting material. This structure can stabilize the central protective hose 4 through the insertion limiting hole 10 and assist in the heat dissipation of the inner area of ​​the flame-retardant corrugated pipe 3 through the central protective hose 4.

[0019] Working principle: When using this new energy vehicle BMS signal acquisition flame-retardant wiring harness structure, firstly, cable 101 is integrated and fixed on connector 102 to assemble BMS signal acquisition wiring harness 1. Then, the main body 2 of the flame-retardant wiring harness structure is assembled. First, the flame-retardant corrugated tube 3 is fitted onto the outside of cable 101. Then, cable 101 is sequentially snapped into the wire-clamping groove 8 on the outer ring of the second cable positioning seat 9. Next, the first cable positioning seat 5 is snapped into the outer ring of the second cable positioning seat 9, and the first cable positioning seats 5 are rotated relative to each other to form a circular structure. At the same time, the snap-fit ​​protrusion 7 and the snap-fit ​​groove 11 are snapped together and firmly secured. To ensure a secure connection between the first cable positioning seat 5 and the second cable positioning seat 9, the cable 101 is then inserted into the cable clamping groove 8 on the outer ring of the first cable positioning seat 5. The central protective flexible tube 4 is then inserted into the flame-retardant corrugated tube 3, and the central protective flexible tube 4 is secured to the middle of the second cable positioning seat 9 through the insertion limiting hole 10 for heat conduction and dissipation. Finally, the flame-retardant corrugated tube 3 is stretched to secure the first cable positioning seat 5 into the rigid end tube 6. The BMS signal acquisition harness 1 enhances the protection of the cable 101 part through the main body 2 of the harness flame-retardant structure, improving the flame-retardant effect, thereby completing a series of tasks.

[0020] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A flame-retardant wiring harness structure for BMS signal acquisition in new energy vehicles, comprising a BMS signal acquisition wiring harness (1) and a flame-retardant wiring harness structure body (2), characterized in that: The main body (2) of the flame-retardant structure of the wire harness is provided with a flame-retardant corrugated tube (3), and the two ends of the flame-retardant corrugated tube (3) are respectively provided with rigid end tubes (6). The main body (2) of the flame-retardant structure of the wire harness is also provided with a first cable positioning seat (5) and a second cable positioning seat (9) that are mutually engaged. The first cable positioning seat (5) is composed of two symmetrical structures that are rotatably connected. The outer rings of the first cable positioning seat (5) and the second cable positioning seat (9) are respectively provided with cable clamping grooves (8) of the same size at even intervals. The second cable positioning seat (9) is also provided with an insertion limiting hole (10) in the middle. A central protective hose (4) is engaged between the insertion limiting holes (10). The first cable positioning seat (5) is respectively engaged in the rigid end tubes (6) at both ends, and the central protective hose (4) is located in the flame-retardant corrugated tube (3).

2. The flame-retardant wiring harness structure for BMS signal acquisition in new energy vehicles according to claim 1, characterized in that: The BMS signal acquisition harness (1) is provided with a connector (102), and a cable (101) is installed between the connectors (102).

3. The flame-retardant wiring harness structure for BMS signal acquisition in new energy vehicles according to claim 2, characterized in that: The flame-retardant corrugated tube (3) is located between the connectors (102) and is sleeved on the outside of the cable (101).

4. The flame-retardant wiring harness structure for BMS signal acquisition in new energy vehicles according to claim 1, characterized in that: The first cable positioning seat (5) has integrally formed snap-fit ​​protrusions (7) spaced at intervals on its inner ring, and the snap-fit ​​protrusions (7) are trapezoidal in shape.

5. The flame-retardant wiring harness structure for BMS signal acquisition in new energy vehicles according to claim 1, characterized in that: The second cable positioning seat (9) has slots (11) spaced apart on its outer ring, and the locking protrusion (7) is press-fitted into the second cable positioning seat (9) through the slots (11).

6. The flame-retardant wiring harness structure for BMS signal acquisition in new energy vehicles according to claim 1, characterized in that: The insertion limiting hole (10) is a T-shaped through hole, and the central protective hose (4) is made of a heat-conducting material.

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