Three-phase high-voltage wire harness of battery pack

Abstract

The utility model relates to the technical field of battery packs, in particular to a three-phase high-voltage wiring harness of a battery pack, which comprises a plurality of wiring terminals and a plurality of connectors, the wiring terminals are longitudinally arranged on the wiring harness, every three wiring terminals form a group, one side of each group of wiring terminals is fixed with the corresponding connector, and the other side of each group of wiring terminals is fixed with the corresponding connector. A quick charge positive wire, a total negative wire and a discharge positive wire are sequentially and fixedly connected to the side, away from the wiring terminal, of the connector from top to bottom, the two ends of the quick charge positive wire, the two ends of the total negative wire and the two ends of the discharge positive wire are all connected with the wiring terminal, wire cores are fixedly installed in the quick charge positive wire, the total negative wire and the discharge positive wire, and braid layers are fixedly connected to the outer sides of the wire cores. A protective layer is fixedly connected to the outer side of the braid layer, an anti-seismic layer is fixedly connected to the outer side of the protective layer, and an insulating layer is fixedly connected to the outer side of the anti-seismic layer. Compared with the prior art, the problem that in the prior art, a high-voltage wire harness is difficult in heat dissipation and not in place in protection, and consequently the wire harness is prone to damage is solved.

Description

Technical Field

[0001] This utility model relates to the field of battery pack technology, and in particular to a three-phase high-voltage wiring harness for a battery pack. Background Technology

[0002] Battery packs are key components in modern electric vehicles, energy storage systems, and other equipment. The wiring harnesses inside the battery pack are responsible for connecting the various battery cells and transmitting power. Existing three-phase high-voltage wiring harnesses for battery packs are usually covered with ordinary insulating materials. These materials have certain limitations in terms of thermal conductivity, protection, shock resistance, and insulation, and cannot fully meet the requirements for battery pack use in environments with high temperatures, vibration, and impact.

[0003] Existing battery pack three-phase high-voltage wiring harnesses mainly consist of wire cores and insulation layers. The wire cores are usually made of multiple strands of fine copper wires twisted together, while the insulation layers are made of common plastic or rubber materials. This design can meet the basic requirements in general industrial applications, but its performance is insufficient in fields such as electric vehicles where safety and reliability are more critical. Utility Model Content

[0004] In view of this, the purpose of this utility model is to propose a three-phase high-voltage wiring harness for battery packs, so as to solve the problem that the high-voltage wiring harness is difficult to dissipate heat and is not adequately protected, which leads to easy damage to the wiring harness in the prior art.

[0005] Based on the above objectives, this utility model provides a three-phase high-voltage wiring harness for a battery pack, including multiple terminals and multiple connectors. The terminals are arranged longitudinally on the harness, with three terminals forming a group. One side of each group of terminals is fixed to a connector. From top to bottom, a fast-charging positive line, a main negative line, and a discharge positive line are sequentially fixedly connected to the side of the connector away from the terminals. Both ends of the fast-charging positive line, the main negative line, and the discharge positive line are connected to the terminals. A wire core is fixedly installed inside each of the fast-charging positive line, the main negative line, and the discharge positive line. A braided layer is fixedly connected to the outside of the wire core. A protective layer is fixedly connected to the outside of the braided layer. An anti-vibration layer is fixedly connected to the outside of the protective layer. An insulation layer is fixedly connected to the outside of the anti-vibration layer. The wire core is a single-strand copper wire, with both ends connected to the terminals.

[0006] Preferably, orange heat shrink tubing, black heat shrink tubing, and red heat shrink tubing are arranged sequentially from top to bottom on both sides of the connector. The orange heat shrink tubing is fixedly connected to both sides of the fast charging positive line located on the connector. The black heat shrink tubing is fixedly connected to both sides of the main negative line located on the connector. The red heat shrink tubing is fixedly connected to both sides of the discharge positive line located on the connector.

[0007] Preferably, a plurality of first cable ties are fixedly installed between the fast charging positive line and the main negative line, and a second cable tie is fixedly installed on the discharge positive line.

[0008] Preferably, the fast charging line is fixedly provided with a battery pack interface and a PDU interface, and the discharge line is fixedly provided with an identification area.

[0009] Preferably, the braided layer covers the outside of the wire core and is a highly heat-dissipating metal braided structure.

[0010] Preferably, the shock-resistant layer covers the outside of the protective layer and is made of nickel-titanium alloy.

[0011] Preferably, the insulating layer covers the outside of the shock-resistant layer and is made of rubber.

[0012] The beneficial effects of this utility model are:

[0013] 1. The battery pack's three-phase high-voltage wiring harness, through its heat-conducting and protective layers, provides heat conduction and protection functions for the high-voltage wiring harness, thereby improving the heat dissipation and safety performance of the wiring harness during use and enhancing its practical value.

[0014] 2. The three-phase high-voltage wiring harness of this battery pack is equipped with anti-vibration and insulation protective layers, which provide stable performance during movement and safety protection during operation, further enhancing the practicality of the device. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a planar schematic diagram of the wire harness structure of this utility model;

[0017] Figure 2 This is a schematic diagram of a cross-section of a portion of the wire harness structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of a single wire harness according to this utility model;

[0019] Figure 4 This is a schematic diagram of the single wire harness planar structure of this utility model.

[0020] The diagram is marked as follows:

[0021] 1. Terminal block; 2. Orange heat shrink tubing; 3. Black heat shrink tubing; 4. Red heat shrink tubing; 5. Fast charging positive cable; 6. Main negative cable; 7. Discharge positive cable; 8. Connector; 9. First cable tie; 10. Second cable tie; 11. Identification area; 12. Battery pack interface; 13. PDU interface; 14. Wire core; 15. Braided layer; 16. Protective layer; 17. Shock-resistant layer; 18. Insulation layer. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0023] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0024] like Figures 1 to 4As shown, a three-phase high-voltage wiring harness for a battery pack includes multiple terminals 1 and multiple connectors 8. The terminals 1 are arranged longitudinally on the harness, with three terminals 1 forming a group. One side of a group of terminals 1 is fixed to a connector 8. From top to bottom, a fast-charging positive line 5, a total negative line 6, and a discharge positive line 7 are sequentially fixedly connected to the side of the connector 8 away from the terminals 1. Both ends of the fast-charging positive line 5, the total negative line 6, and the discharge positive line 7 are connected to the terminals 1. A wire core 14 is fixedly installed inside each of the fast-charging positive line 5, the total negative line 6, and the discharge positive line 7. A braided layer 15 is fixedly connected to the outside of the wire core 14. A protective layer 16 is fixedly connected to the outside of the braided layer 15. A protective layer 16 is fixedly connected to the outside of the protective layer 16. The shock-resistant layer 17 has an insulation layer 18 fixedly connected to its outer side. The wire core 14 is a single-strand copper core wire, with both ends connected to the terminal block 1. Multiple first cable ties 9 are fixedly installed between the fast charging positive line 5 and the main negative line 6. A second cable tie 10 is fixedly installed on the discharge positive line 7. The fast charging positive line 5 has a battery pack interface 12 and a PDU interface 13. The discharge positive line 7 has a marking area 11. The clearly defined cables ensure that the wiring harness is more stable and safer during operation. The single-strand copper core has good conductivity, low resistance, low oxidation, high withstand voltage, and longer service life. At the same time, it has a stable structure, strong oxidation resistance, low cost, high hardness, and strong pressure and corrosion resistance.

[0025] Furthermore, such as Figure 1 As shown, orange heat shrink tubing 2, black heat shrink tubing 3, and red heat shrink tubing 4 are arranged sequentially from top to bottom on both sides of connector 8. Orange heat shrink tubing 2 is fixedly connected to the fast charging positive line 5 and located on both sides of connector 8. Black heat shrink tubing 3 is fixedly connected to the main negative line 6 and located on both sides of connector 8. Red heat shrink tubing 4 is fixedly connected to the discharge positive line 7 and located on both sides of connector 8. The corresponding heat shrink tubing can clearly show the function and purpose of each cable, providing convenience for staff in terms of identification.

[0026] Furthermore, such as Figure 3 and Figure 4 As shown, the braided layer 15 covers the outside of the wire core 14 and is a high heat dissipation metal braided structure, such as copper braid or aluminum braid. It can provide additional mechanical protection while ensuring heat dissipation. The high thermal conductivity metal wire is braided into a mesh structure and wrapped around the outer layer of the wire core 14. This can not only accelerate heat dissipation, but also enhance the tensile strength of the wire harness. The metal braided structure has natural flexibility, which makes the wire harness have a certain buffering effect when subjected to mechanical impact.

[0027] Furthermore, such as Figure 3 and Figure 4As shown, the shock-resistant layer 17 covers the outside of the protective layer 16 and is made of nickel-titanium alloy. As a shape memory alloy, nickel-titanium alloy undergoes slight shape changes with temperature, which can provide a certain degree of self-adaptability when fixing the wire harness. It is especially suitable for preventing the wire harness from loosening or being excessively compressed due to temperature changes. The shape memory alloy wires are arranged inside the wire harness sheath as a support skeleton. When the wire harness temperature rises, these alloy wires will expand slightly, helping the sheath dissipate heat while adjusting its flexibility. When the temperature drops, the alloy wires contract, strengthening the wrapping and fixing effect on the wire harness. The characteristics of shape memory alloy allow the wire harness to automatically disperse the stress generated during thermal expansion and contraction, thereby avoiding fatigue damage caused by temperature differences and making the wire harness highly adaptable to external vibrations.

[0028] Furthermore, such as Figure 3 and Figure 4 As shown, the insulation layer 18 covers the outside of the shock-resistant layer 17 and is made of rubber. The outermost layer of rubber material can ensure that the high-voltage wire harness maintains good insulation during operation and avoid safety accidents caused by insufficient insulation function.

[0029] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0030] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A battery pack three-phase high voltage harness, characterized by, The utility model relates to a kind of wire harnesses, including: Multiple terminal blocks (1) and multiple connectors (8), the terminal block (1) is arranged longitudinally on the wire harness, every three terminal blocks (1) is a group, one side of a group of terminal blocks (1) is fixed with the connector (8), the connector (8) is fixedly connected with fast charging positive line (5), total negative line (6) and discharge positive line (7) from top to bottom on the side away from the terminal block (1), both ends of the fast charging positive line (5), the total negative line (6) and the discharge positive line (7) are connected with the terminal block (1), wire core (14) is fixedly installed in the fast charging positive line (5), the total negative line (6) and the discharge positive line (7) inside, the wire core (14) is fixedly connected with braided layer (15) outside, the braided layer (15) is fixedly connected with protective layer (16) outside, the protective layer (16) is fixedly connected with anti-vibration layer (17) outside, the anti-vibration layer (17) is fixedly connected with insulating layer (18) outside, the wire core (14) is single copper core wire, both ends are connected with the terminal block (1).

2. The battery pack three-phase high voltage harness of claim 1, wherein, Orange heat shrink tube (2), black heat shrink tube (3) and red heat shrink tube (4) are sequentially arranged from top to bottom on both sides of the connector (8), the orange heat shrink tube (2) is fixedly connected on the fast charging positive line (5) on both sides of the connector (8), the black heat shrink tube (3) is fixedly connected on the total negative line (6) on both sides of the connector (8), and the red heat shrink tube (4) is fixedly connected on the discharge positive line (7) on both sides of the connector (8).

3. The battery pack three-phase high voltage harness of claim 2, wherein, A plurality of first cable ties (9) are fixedly installed between the fast charging positive line (5) and the total negative line (6), and one second cable tie (10) is fixedly installed on the discharge positive line (7).

4. The battery pack three-phase high voltage harness of claim 2, wherein, A battery pack interface (12) and a PDU interface (13) are fixedly provided on the fast charging positive line (5), and an identification area (11) is fixedly provided on the discharge positive line (7).

5. The battery pack three-phase high voltage harness of claim 1, wherein, The braided layer (15) is wrapped outside the wire core (14) and is a high-heat-dissipation metal braided structure.

6. The battery pack three-phase high voltage harness of claim 1, wherein, The anti-vibration layer (17) is wrapped outside the protective layer (16) and is made of nickel-titanium alloy.

7. The battery pack three-phase high voltage harness of claim 1, wherein, The insulating layer (18) is wrapped outside the anti-vibration layer (17) and is made of rubber.

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