High-voltage branching cooling high-current connector for vehicle

By designing automotive high-voltage split wire cooling high-current connectors, using split wire sheath, cooling metal shell and insulated shell, the fire risk caused by heat accumulation of existing high-voltage connectors and the redundant design of connectors is solved. , realizes efficient heat dissipation and electrical connection stability, reducing costs.

CN222440874UActive Publication Date: 2025-02-07LANGFANG LEONI WIRING SYST CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202420188491.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-01-26
Publication Date
2025-02-07
Estimated Expiration
2034-01-26

AI Technical Summary

Technical Problem

There is a fire risk for existing high-voltage connectors to accumulate heat at the electrical connection parts, resulting in fewer connector integrations and more redundant designs, resulting in problems such as many electrical connection parts, many connectors, complex types and high costs in the vehicle.

Method used

A high-voltage split wire cooling high-current connector for automotive use is designed, using split wire sheath, split wire tail cover, cooling inlet assembly and cooling outlet assembly, combined with cooling metal shell and insulating shell, circulating through coolant and Double insulation protection achieves efficient heat dissipation and electrical connection stability.

Benefits of technology

It effectively avoids heat accumulation in the electrical connection parts, reduces fire risk, realizes the integration and low cost of connectors, and ensures the stability and safety of current output.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN222440874U_ABST
    Figure CN222440874U_ABST
Patent Text Reader

Abstract

The utility model discloses an automotive high-voltage branching cooling large-current connector in the technical field of electric automobile liquid cooling high-voltage connectors, and the connector comprises a branching sheath which is used for protecting the outer layer of the connector and is electrically connected in the connector; the branching tail covers are divided into two groups, and the two groups of branching tail covers are respectively arranged at the front end and the rear end of the branching sheath in a sleeving manner; the cooling inlet assembly is communicated with one side of the branching sheath; the cooling outlet assembly is communicated with one side of the branching sheath, the high-voltage branching cooling large-current connector is a one-to-three connector, the A-end wire receives electric energy from an energy source, the BCD-end wire transmits the electric energy to an in-vehicle load, and the electric energy input and output connection mode of the ABCD-end wire can be adjusted according to the whole vehicle framework. The interior of the one-to-three connector is electrically connected to form an electric connection conductor, the electric connection conductor is subjected to ultrasonic welding or crimping, and an electric connection area is square, so that current passing and heat dissipation are facilitated.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The utility model relates to the technical field of liquid-cooled high-voltage connectors for electric vehicles, in particular to a high-voltage branch-line cooling high-current connector for vehicles. Background Art

[0002] The driving of electric vehicles relies on the conversion of electrical energy. During electric transmission, the energy source needs to discharge a continuous and stable current and a short high current. The discharge of current is energy transmission through wires and connectors, and heat is generated when the current passes through the electrical connection. The faster the energy source discharges, the more heat it generates. At this moment, excessive heat accumulation will pose a risk of fire. As an electrical connection device for electric vehicles, the stability of the connector and the ampere value of the current transmission determine the safety of electric vehicle driving.

[0003] At present, all high-voltage connectors on the market can realize the function of current transmission. In order to solve the risk of fire caused by heat accumulation in the electrical connection parts, high-voltage architectures often use large-section wires and high currents to avoid it, resulting in less connector integration and more redundant designs. As a result, there are many electrical connection parts in the vehicle, many connectors, various types, and high costs. In order to solve the above problems and realize the integration of electrical connections, low cost, large current carrying, and stable current output, a high-voltage branch line cold-shortage high-current connector for vehicles is specially invented. Utility Model Content

[0004] The utility model aims to provide a high-voltage branch line cooling high-current connector for vehicles. In order to solve the risk of fire caused by heat accumulation in electrical connection parts, high-voltage architectures often use large-section wires and high currents to avoid this problem, resulting in less connector integration and more redundant designs, causing the problem of many electrical connection parts in vehicles, many connectors, various types, and high costs.

[0005] Therefore, the utility model adopts a high-voltage branch line cooling high-current connector for vehicles, comprising:

[0006] A branching sheath, which is an outer protection of the connector and the electrical connection is made inside it;

[0007] The branching tail cover is divided into two groups, and the two groups of branching tail covers are respectively sleeved on the front and rear ends of the branching sheath;

[0008] A cooling inlet assembly, wherein the cooling inlet assembly is connected to one side of the branch line sheath;

[0009] A cooling outlet assembly, wherein the cooling outlet assembly is connected to one side of the branch line sheath;

[0010] An A-end wire and a B-end wire, wherein the A-end wire and the B-end wire are installed at the front end of the branch wire sheath;

[0011] The C-end wire and the D-end wire are installed at the rear end of the branch wire sheath.

[0012] Optionally, the cooling outlet assembly and the cooling inlet assembly are respectively located on two sides of the branch line sheath.

[0013] Optionally, a first branch line seal is provided at the connection between the branch line sheath and the A-end wire, and at the connection between the branch line sheath and the B-end wire, and a second branch line seal is provided at the connection between the branch line sheath and the C-end wire and the D-end wire.

[0014] Optionally, a cooling metal shell is arranged inside the branch line sheath, and an insulating shell is arranged inside the cooling metal shell.

[0015] Optionally, a cooling inlet assembly sealing ring is provided at the connection between the branch line sheath and the cooling inlet assembly, and a cooling outlet assembly sealing ring is provided at the connection between the branch line sheath and the cooling outlet assembly.

[0016] Optionally, cooling sealing fixing rings are provided at the connection between the cooling metal shell and the A-end wire, the connection between the cooling metal shell and the B-end wire, the connection between the cooling metal shell and the C-end wire, and the connection between the cooling metal shell and the D-end wire.

[0017] Optionally, the insulating shell includes an insulating upper shell and an insulating lower shell, and an electrical connection conductor is arranged in the insulating shell, and the electrical connection conductor is respectively connected to the A-end wire, the B-end wire, the C-end wire and the D-end wire.

[0018] Optionally, the cavity formed by the insulating upper shell and the insulating lower shell is W-shaped or number "3"-shaped.

[0019] Optionally, a cooling fixing ring sealing body is provided on the cooling sealing fixing ring.

[0020] Optionally, the cooling metal shell is a double-layer structure with inner and outer layers, and a coolant circulation area is provided between the inner and outer layers of the cooling metal shell.

[0021] In summary, the present invention has at least one of the following beneficial effects:

[0022] 1. High-voltage branch cooling The high-current connector is a one-to-three connector. The A-end wire receives electrical energy from the energy source, and the B\C\D-end wire transmits electrical energy to the load in the vehicle, such as PTC, DC-DC, EAC, OBC, etc. The connection method of the A\B\C\D-end wire power input and output can be adjusted according to the vehicle architecture. The one-to-three connector is internally electrically connected to form an electrical connection conductor. The electrical connection conductor is ultrasonically welded or crimped, and its electrical connection area is square, which is conducive to current passage and heat dissipation;

[0023] 2. The insulating upper shell and the insulating lower shell are buckled on the outside of the electrical connection conductor, and the electrical connection conductor 13 is buckled around each other to form double insulation protection. The insulating upper shell and the insulating lower shell are W-shaped or digital "3"-shaped, and the openings at both ends promote internal air convection, which is beneficial to the heat dissipation of the internal cavity. After buckling, the movement of the electrical connection conductor can be restricted;

[0024] 3. The cooling metal shell has a double layer of inner and outer layers, and the inside is a coolant circulation area. The coolant circulates inside the cooling metal shell through the cooling inlet component and the cooling outlet component. The internal coolant circulation gap is adjusted according to the structure of the connector, which can be 2mm or 5mm. The cooling metal shell is completely covered on the double insulating shell formed by the insulating upper shell and the insulating lower shell, and the internal heat is conducted through the metal shell to avoid thermal imbalance of the electrical connection conductor and cause ablation.

[0025] 4. The cooling metal shell and the A\B\C\D end wires are fixedly sealed by the cooling sealing fixing ring and the cooling fixing ring sealing body to avoid the low heat conduction efficiency caused by the movement of the metal shell, and at the same time avoid contact between the electrical connection parts to ensure a safe conduction distance. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 It is a schematic diagram of the structure of the utility model;

[0028] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0029] Figure 3 This is a schematic diagram of the internal exploded structure of the cooling metal shell of the utility model;

[0030] Figure 4 This is a schematic diagram of the cooling seal fixing ring structure of the utility model.

[0031] Description of reference numerals:

[0032] 1. Branch line sheath; 2. Branch line tail cover; 3. First branch line seal; 4. Second branch line seal; 5. Cooling metal shell; 6. Insulating upper shell; 7. Insulating lower shell; 8. Cooling inlet assembly; 9. Cooling outlet assembly; 10. Cooling inlet assembly sealing ring; 11. Cooling outlet assembly sealing ring, 12. Cooling sealing fixing ring; 13. Electrical connection conductor; 14. Cooling fixing ring seal; 15. A-end wire; 16. B-end wire; 17. C-end wire; 18. D-end wire. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-4 The utility model is described in further detail.

[0034] Embodiment 1, refer to Figure 1-3 In this embodiment, a high-voltage branch line cooling high-current connector for a vehicle solves the problem that the high-voltage branch line cooling high-current connector for a vehicle is not easy to dissipate heat, and includes: a branch line sheath 1, the branch line sheath 1 is the outer layer protection of the connector, and the electrical connection is connected inside it;

[0035] The branching tail cover 2 is divided into two groups, and the two groups of branching tail covers 2 are respectively sleeved on the front and rear ends of the branching sheath 1;

[0036] A cooling inlet assembly 8, the cooling inlet assembly 8 is connected to one side of the branch line sheath 1;

[0037] A cooling outlet assembly 9, the cooling outlet assembly 9 is connected to one side of the branch line sheath 1, and the cooling outlet assembly 9 and the cooling inlet assembly 8 are respectively located on both sides of the branch line sheath 1;

[0038] The A-end wire 15 and the B-end wire 16 are installed at the front end of the branching sheath 1;

[0039] The C-end wire 17 and the D-end wire 18 are installed at the rear end of the branch wire sheath 1;

[0040] A cooling metal shell 5 is arranged inside the branch line sheath 1, and an insulating shell is arranged inside the cooling metal shell 5;

[0041] The cooling metal shell 5 is a double-layer structure with inner and outer layers, and the area between the inner and outer layers of the cooling metal shell 5 is a cooling liquid circulation area;

[0042] The insulating housing includes an insulating upper housing 6 and an insulating lower housing 7, and an electrical connection conductor 13 is arranged in the insulating housing, and the electrical connection conductor 13 is respectively connected to the A-end wire 15, the B-end wire 16, the C-end wire 17 and the D-end wire 18;

[0043] The cavity formed by the insulating upper shell 6 and the insulating lower shell 7 is W-shaped or number "3"-shaped.

[0044] The specific working principle is: the high-voltage branch cooling high-current connector of the present application is a one-to-three connector, the A-end wire 15 receives electrical energy from the energy source, and the other B-end wire 16, C-end wire 17 and D-end wire 18 transmit electrical energy to the load in the vehicle, such as PTC, DC-DC, EAC, OBC, etc. The connection method of the A-end wire 15, the B-end wire 16, the C-end wire 17 and the D-end wire 18 for electrical energy input and output can be adjusted according to the vehicle architecture. The internal electrical connection of the one-to-three connector forms an electrical connection conductor 13, which is ultrasonically welded or crimped, and its electrical connection area is square, which is conducive to current passage and heat dissipation. The coolant passes through the cooling inlet group Component 8 is input into the cooling metal shell 5 of the branching sheath 1. The internal coolant circulation gap is adjusted with the structure of the connector, which can be 2mm or 5mm. The cooling metal shell 5 is completely covered on the double insulating shell formed by the insulating upper shell 6 and the insulating lower shell 7. The internal heat is conducted through the metal shell 5 to avoid thermal imbalance of the electrical connection conductor 13 and ablation. The insulating upper shell 6 and the insulating lower shell 7 are buckled together around the electrical connection conductor 13 to form double insulation protection. The insulating upper shell 6 and the insulating lower shell 7 are W-shaped or digital "3"-shaped, with openings at both ends to promote internal air convection, which is beneficial to the heat dissipation of the internal cavity. After buckling, the movement of the electrical connection conductor 13 can be constrained.

[0045] Example 2, refer to Figure 1-4 In order to solve the existing problem of how to fix and seal each terminal in this embodiment, the first branch line seal 3 is provided at the connection between the branch line sheath 1 and the A-end wire 15, and the branch line sheath 1 and the B-end wire 16, and the second branch line seal 4 is provided at the connection between the branch line sheath 1 and the C-end wire 17 and the D-end wire 18;

[0046] A cooling inlet assembly sealing ring 10 is provided at the connection between the branch line sheath 1 and the cooling inlet assembly 8, and a cooling outlet assembly sealing ring 11 is provided at the connection between the branch line sheath 1 and the cooling outlet assembly 9;

[0047] A cooling sealing fixing ring 12 is provided at the connection between the cooling metal shell 5 and the A-end wire 15, the connection between the cooling metal shell 5 and the B-end wire 16, the connection between the cooling metal shell 5 and the C-end wire 17, and the connection between the cooling metal shell 5 and the D-end wire 18;

[0048] A cooling and sealing fixing ring sealing body 14 is provided on the cooling and sealing fixing ring 12 .

[0049] The specific working principle is: the cooling inlet component sealing ring 10 and the cooling outlet component sealing ring 11 are respectively installed at the connection between the cooling inlet component 8 and the cooling outlet component 9 and the branch line sheath 1, so that the cooling component is effectively sealed with the branch line sheath 1, so that the entire connector meets the protection requirements such as IP68. The front and rear ends of the cooling sealing fixing ring 12 are both metal, and the interior contains a cooling fixing ring sealing body 14. The cooling sealing fixing ring 12 is used to fix the cooling metal shell 5 and the A-end wire 15, the B-end wire 16, the C-end wire 17 and the D-end wire 18, and the cooling fixing ring sealing body 14 is used to seal to avoid the low heat conduction efficiency of the cooling metal shell 5 when it moves, and at the same time avoid contact between the electrical connection parts to ensure a safe conduction distance. The branch line sealing body 3 and the branch line sealing body 4 are installed on the A-end wire 15, the B-end wire 16, the C-end wire 17 and the D-end wire 18, respectively, and are fixed by the branch line tail cover 2 through a snap-on method, so that the branch line sheath 1 is sealed.

[0050] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A high-voltage branch line cooling high-current connector for vehicles, characterized in that: include: A branching sheath, which is an outer protection of the connector and the electrical connection is made inside it; The branching tail cover is divided into two groups, and the two groups of branching tail covers are respectively sleeved on the front and rear ends of the branching sheath; A cooling inlet assembly, wherein the cooling inlet assembly is connected to one side of the branch line sheath; A cooling outlet assembly, wherein the cooling outlet assembly is connected to one side of the branch line sheath; An A-end wire and a B-end wire, wherein the A-end wire and the B-end wire are installed at the front end of the branch wire sheath; The C-end wire and the D-end wire are installed at the rear end of the branch wire sheath.

2. A high-voltage branch line cooling high-current connector for vehicles according to claim 1, characterized in that: The cooling outlet assembly and the cooling inlet assembly are respectively located on two sides of the branch line sheath.

3. The high-voltage branch line cooling high-current connector for vehicles according to claim 1, characterized in that: A first branch line seal is provided at the connection between the branch line sheath and the A-end wire, and at the connection between the branch line sheath and the B-end wire, and a second branch line seal is provided at the connection between the branch line sheath and the C-end wire and the D-end wire.

4. The high-voltage branch line cooling high-current connector for vehicles according to claim 1, characterized in that: A cooling metal shell is arranged inside the branch line sheath, and an insulating shell is arranged inside the cooling metal shell.

5. The high-voltage branch line cooling and high-current connector for vehicles according to claim 1, characterized in that: A cooling inlet assembly sealing ring is provided at the connection between the branch line sheath and the cooling inlet assembly, and a cooling outlet assembly sealing ring is provided at the connection between the branch line sheath and the cooling outlet assembly.

6. A high-voltage branch line cooling high-current connector for vehicles according to claim 4, characterized in that: The connection between the cooling metal shell and the A-end wire, the connection between the cooling metal shell and the B-end wire, the connection between the cooling metal shell and the C-end wire, and the connection between the cooling metal shell and the D-end wire are all provided with cooling sealing fixing rings.

7. A high-voltage branch line cooling high-current connector for vehicles according to claim 4, characterized in that: The insulating shell comprises an insulating upper shell and an insulating lower shell, and an electrical connection conductor is arranged in the insulating shell, and the electrical connection conductor is respectively connected to the A-end wire, the B-end wire, the C-end wire and the D-end wire.

8. The high-voltage branch line cooling and high-current connector for vehicles according to claim 7, characterized in that: The cavity formed by the insulating upper shell and the insulating lower shell is W-shaped or number "3"-shaped.

9. The high-voltage branch line cooling and high-current connector for vehicles according to claim 6, characterized in that: The cooling sealing fixing ring is provided with a cooling fixing ring sealing body.

10. The high-voltage branch line cooling and high-current connector for vehicles according to claim 4, characterized in that: The cooling metal shell is a double-layer structure with inner and outer layers, and a cooling liquid circulation area is located between the inner and outer layers of the cooling metal shell.