A temperature control plug wire for new energy vehicle charging

Abstract

The utility model relates to plug wire manufacturing technical field especially new energy automobile charging temperature control plug wire. The steady frame is as the root fixed base of the live wire terminal post, zero line terminal post, ground wire terminal post, cc terminal post, cp terminal post and heat conduction spare, and it is as the injection moulding growth base of plastic insulator. The heat conduction spare holds the live wire terminal post and zero line terminal post simultaneously, and carries out heat transfer in the heat conduction mode. Temperature sensing switch is with heat conduction spare as the plug -in basis, and is hidden in plastic insulator. Temperature sensing switch is grounded, and is electrically conducted with charging control guide line simultaneously. In the specific application, temperature sensing switch can directly perceive the temperature change at live wire terminal post and zero line terminal post in real time. When the temperature of live wire terminal post or zero line terminal post exceeds certain threshold value, temperature sensing switch sends signal to charging system through charging control guide line, and it can adjust charging power or stop charging in time.

Description

Technical Field

[0001] This utility model relates to the field of plug and wire manufacturing technology, and in particular to a temperature-controlled plug and wire for charging new energy vehicles. Background Technology

[0002] Against the backdrop of global advocacy for green travel and sustainable development, the new energy vehicle industry has flourished. New energy vehicles rely on electric power, making the charging process crucial, and charging cables are a key component.

[0003] Currently, existing charging plugs and cables for new energy vehicles on the market have many shortcomings. Taking Chinese utility model patent CN202510203887.2 as an example, such as... Figure 1 As shown, the temperature sensor switch is embedded in the heat-conducting component. However, the heat-conducting component is not in direct contact with the live wire and neutral wire terminals. The temperature sensor switch can only indirectly sense the real-time temperature of the live wire and neutral wire terminals. During charging, especially during high-power charging, a large current flows through the live wire and neutral wire terminals. Due to factors such as line resistance and contact resistance, heat easily accumulates on these terminals. In traditional plug and cable designs, the heat generated by the live wire and neutral wire terminals must be conducted to the heat-conducting component through a support frame and plastic insulator. This results in a lack of effective temperature monitoring and conduction mechanisms in traditional plug and cable designs, making it difficult to quickly and accurately sense temperature changes in these critical temperature rise areas. Consequently, it is impossible to respond promptly to overheating situations, greatly increasing the risk of safety accidents such as fires caused by overheating. Therefore, it is urgent for technicians to solve the above problems. Utility Model Content

[0004] This utility model was developed and designed to solve the many problems existing in the current charging plugs and cables. It aims to provide a temperature-controlled plug and cable for charging new energy vehicles that has effective temperature monitoring and control functions and can achieve precise power supply adjustment or charging stop.

[0005] To address the aforementioned technical problems, this utility model relates to a temperature-controlled plug cable for charging new energy vehicles, which is composed of a three-prong plug and a cable. The cable includes a bundled live wire, neutral wire, ground wire, charging connection confirmation wire, and charging control guide wire. The three-prong plug includes a support frame, a plastic insulator, live wire terminals, neutral wire terminals, ground wire terminals, CC terminals, CP terminals, a temperature sensing switch, and a heat-conducting component. The support frame serves as the foundation for fixing the live wire terminals, neutral wire terminals, ground wire terminals, CC terminals, CP terminals, and the heat-conducting component, and also serves as the injection molding growth foundation for the plastic insulator. The live wire terminals, neutral wire terminals, ground wire terminals, CC terminals, and CP terminals are respectively used as the clamping connection foundation for the live wire, neutral wire, ground wire, charging connection confirmation wire, and charging control guide wire. The heat-conducting component simultaneously holds the live wire terminal and the neutral wire terminal and transfers heat through thermal conduction. The temperature sensor switch uses a heat-conducting component as its mounting base and is concealed within a plastic insulator. The temperature sensor switch is grounded and simultaneously electrically connected to the charging control lead wire.

[0006] As a further improvement to the technical solution disclosed in this utility model, the heat-conducting component is simultaneously formed with a first holding cavity, a second holding cavity, and an insertion cavity for housing a temperature sensing switch. After the heat-conducting component is positioned, the live wire terminal and the neutral wire terminal are respectively held by the first holding cavity and the second holding cavity.

[0007] As a further improvement to the technical solution disclosed in this utility model, the heat-conducting component is also formed with positioning posts. There are multiple positioning posts, which are evenly distributed on the bottom wall of the heat-conducting component. Multiple positioning holes adapted to the positioning posts are formed on the stabilizing frame.

[0008] As a further improvement to the technical solution disclosed in this utility model, both the first holding cavity and the second holding cavity are semi-open. During the process of the heat-conducting component performing translational movement, the live wire terminal and the neutral wire terminal are embedded into the first holding cavity and the second holding cavity one by one.

[0009] As a further improvement to the technical solution disclosed in this utility model, the three-pole plug also includes a first thermally conductive adhesive molded body and a second thermally conductive adhesive molded body. The first thermally conductive adhesive molded body is formed by curing thermally conductive adhesive that fills the first holding cavity and the live wire terminal. The second thermally conductive adhesive molded body is formed by curing thermally conductive adhesive that fills the second holding cavity and the neutral wire terminal.

[0010] As a further improvement to the technical solution disclosed in this utility model, the three-pole plug also includes a third thermally conductive adhesive molded body. The third thermally conductive adhesive molded body is formed by curing thermally conductive adhesive that fills the space between the temperature sensing switch and the insertion cavity.

[0011] As a further improvement to the technical solution disclosed in this utility model, after the plastic insulator has been cured and molded, both the cc terminal and the cp terminal are exposed.

[0012] As a further improvement to the technical solution disclosed in this utility model, the heat-conducting component is preferably made of alumina ceramic, aluminum nitride ceramic or silicon nitride ceramic.

[0013] In practical applications, the temperature-controlled plug wire for charging new energy vehicles disclosed in this utility model can achieve at least the following beneficial technical effects, specifically:

[0014] 1) A temperature-sensing switch is a switch that uses a bimetallic strip as the temperature-sensing element. The heat-conducting element has excellent electrical insulation and thermal conductivity. In practical applications, the heat-conducting element simultaneously holds both the live wire and neutral wire terminals, transferring heat through thermal conduction. The temperature-sensing switch can sense temperature changes at the live wire and neutral wire terminals in real time and directly. When the temperature of either the live wire or neutral wire terminal exceeds a certain threshold, the temperature-sensing switch sends a signal to the charging system via the charging control guide wire. The charging system can then adjust the charging power or stop charging in a timely manner, effectively preventing safety accidents caused by overheating of the plug and wires.

[0015] 2) The charging connection confirmation line ensures a normal electrical connection between the charging equipment and the vehicle, while the charging control guide line can intervene in the charging process based on the signal from the temperature sensing switch, thereby achieving intelligent control. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of a temperature control plug wire in the existing technology.

[0018] Figure 2 This is a three-dimensional schematic diagram from one perspective of the first embodiment of the temperature control plug wire for charging new energy vehicles disclosed in this utility model.

[0019] Figure 3 This is a three-dimensional schematic diagram from another perspective of the first embodiment of the temperature control plug wire for charging new energy vehicles disclosed in this utility model.

[0020] Figure 4This is a three-dimensional schematic diagram of a three-pole plug from one perspective in the first embodiment of the temperature control plug wire for charging new energy vehicles disclosed in this utility model.

[0021] Figure 5 This is a three-dimensional schematic diagram of another perspective of the three-pole plug in the first embodiment of the temperature control plug wire for charging new energy vehicles disclosed in this utility model (with the plastic insulator hidden).

[0022] Figure 6 This is a three-dimensional schematic diagram of the three-pole plug in the first embodiment of the temperature control plug wire for charging new energy vehicles disclosed in this utility model (with the plastic insulator hidden).

[0023] Figure 7 This is a three-dimensional schematic diagram of the heat-conducting component in the first embodiment of the temperature-controlled plug wire for charging new energy vehicles disclosed in this utility model.

[0024] Figure 8 This is a three-dimensional schematic diagram of the stabilizing frame in the first embodiment of the temperature control plug wire for charging new energy vehicles disclosed in this utility model.

[0025] Figure 9 This is a three-dimensional schematic diagram of the second embodiment of the temperature control plug wire for charging new energy vehicles disclosed in this utility model (only the three-pole plug part is shown).

[0026] 1-Three-pole plug; 11-Stabilizing bracket; 111-Positioning hole; 12-Plastic insulator; 13-Live wire terminal; 14-Neutral wire terminal; 15-Ground wire terminal; 16-CC terminal; 17-CP terminal; 18-Temperature sensor switch; 19-Heat-conducting component; 191-First holding cavity; 192-Second holding cavity; 193-Insertion cavity; 194-Positioning post; 110-First thermally conductive molded body; 111-Second thermally conductive molded body; 112-Third thermally conductive molded body; 2-Cable; 21-Cable core; 211-Live wire; 212-Neutral wire; 213-Ground wire; 214-Charging connection confirmation wire; 215-Charging control guide wire; 22-Insulating plastic sleeve. Detailed Implementation

[0027] In the charging process of new energy vehicles, the temperature-controlled plug cable for charging new energy vehicles is connected to the socket panel of the charging pile, and the charging current, charging voltage, and charging progress are controlled by the matching power control box. In fast charging scenarios, the high charging current reaches 150-400A, allowing the on-board battery of the new energy vehicle to be fully charged in a short time.

[0028] The present invention will be further described in detail below with reference to specific embodiments. Figure 2 , Figure 3The diagrams show two different perspectives of the first embodiment of the temperature-controlled plug cable for charging new energy vehicles disclosed in this utility model. It can be seen that it consists of a three-prong plug 1 and a cable 2. In practical applications, by inserting the three-prong plug 1 into a power socket, the charging equipment of the new energy vehicle is electrically connected to the charging pile, thereby providing electrical energy input for the subsequent charging process. The core function of the cable 2 is to carry and transmit current, providing the necessary electrical energy for charging the vehicle battery.

[0029] like Figure 3 , Figure 5 , Figure 6 As shown, cable 2 is composed of a cable core 21 and an insulating plastic sheath 22. The cable core 21 consists of a bundle of parallel wires (live wire 211, neutral wire 212, ground wire 213, charging connection confirmation wire 214, and charging control guide wire 215), all wrapped in the insulating plastic sheath 22. The insulating plastic sheath 22 encloses the cable core 21, isolating it from the external environment and providing insulation and protection. The charging connection confirmation wire 214 is used to confirm the electrical connection status between the charging equipment and the new energy vehicle during the charging process. Once the vehicle's charging interface completes the electrical connection, the charging connection confirmation wire 214 transmits a specific signal to inform the vehicle and charging equipment that the connection has been successful, allowing both parties to proceed with subsequent charging preparations, such as initiating the charging control program and checking the battery status. The charging control guide line 215 is used to transmit charging control signals. It can transmit control commands (such as charging current and voltage adjustment commands) during the charging process to the charging management system of the new energy vehicle. At the same time, it can also feed back the charging status information of the new energy vehicle (such as battery power and charging progress) to the charging pile, which is conducive to realizing intelligent control and management of the charging process.

[0030] like Figure 4 , Figure 5 , Figure 6As shown, the three-pole plug 1 mainly consists of a support frame 11, a plastic insulator 12, a live wire terminal 13, a neutral wire terminal 14, a ground wire terminal 15, a CC terminal 16, a CP terminal 17, a temperature sensing switch 18, and a heat-conducting component 19. The support frame 1 is generally flat, serving as the foundation for fixing the live wire terminal 13, neutral wire terminal 14, ground wire terminal 15, CC terminal 16, CP terminal 17, and the heat-conducting component 19. It also serves as the injection molding base for the plastic insulator 12. After the plastic insulator 12 has cured, the CC terminal 16 and CP terminal 17 are exposed to facilitate electrical conduction and signal transmission with the charging pile's socket panel. The live wire terminal 13, neutral wire terminal 14, ground wire terminal 15, cc terminal 16, and cp terminal 17 are respectively used as the clamping connection base for the live wire 211, neutral wire 212, ground wire 213, charging connection confirmation line 214, and charging control guide line 215. The heat-conducting element 19 is made of a highly thermally conductive and electrically insulating material (such as alumina ceramic, aluminum nitride ceramic, silicon nitride ceramic, etc.), which simultaneously holds the live wire terminal 13 and the neutral wire terminal 14, transferring heat through thermal conduction. The temperature sensing switch 18 uses the heat-conducting element 19 as its insertion base and is concealed within the plastic insulator 12. The temperature sensing switch 18 is grounded and simultaneously electrically connected to the charging control guide line 215.

[0031] It is known that the temperature-sensing switch 18 is a switch that uses a bimetallic strip as the temperature-sensing element. Due to its special material, the heat-conducting element 19 has excellent electrical insulation and thermal conductivity. In specific applications, the heat-conducting element 19 simultaneously holds the live wire terminal 13 and the neutral wire terminal 14, transferring heat through thermal conduction. The temperature-sensing switch 18 can sense the temperature changes at the live wire terminal 13 and the neutral wire terminal 14 in real time and directly. When the temperature of either the live wire terminal 13 or the neutral wire terminal 14 exceeds a certain threshold, the temperature-sensing switch 18 sends a signal to the charging system through the charging control guide line 215. The charging system can then adjust the charging power or stop charging in a timely manner, thereby effectively preventing safety accidents caused by overheating of the plug and wires.

[0032] like Figure 7As shown, the heat-conducting component 19 is simultaneously formed with a first holding cavity 191, a second holding cavity 192, and an insertion cavity 193. The insertion cavity 193 is used to embed the temperature sensing switch 18. The first holding cavity 191 and the second holding cavity 192 are respectively used to circumferentially hold the live wire terminal 13 and the neutral wire terminal 14. Thus, because the live wire terminal 13, the neutral wire terminal 14, and the temperature sensing switch 18 are all circumferentially held by the heat-conducting component 19, the heat conduction area is guaranteed, and the heat generated by the live wire terminal 13 and the neutral wire terminal 14 is quickly conducted to the temperature sensing switch 18, enabling it to accurately monitor the real-time temperature of the live wire terminal 13 and the neutral wire terminal 14.

[0033] To reduce assembly difficulty and ensure precise holding of the live wire terminal 13 and the neutral wire terminal 14, as a further optimization of the above technical solution, similarly... Figure 7 As shown, the heat-conducting element 19 also has positioning posts 194 formed thereon. The positioning posts 194 extend from the bottom wall of the heat-conducting element 19, and there are three of them, evenly distributed on the bottom wall of the heat-conducting element 19. Figure 8 As shown, the stabilizing frame 11 has three positioning holes 111 that are adapted to the positioning posts 194.

[0034] Furthermore, by Figure 7 As can be clearly seen in the diagram, both the first holding cavity 191 and the second holding cavity 192 are semi-open, rather than fully enclosed. This allows the live wire terminal 13 and the neutral wire terminal 14 to more easily enter their corresponding first holding cavity 191 and second holding cavity 192 during the fabrication process of the temperature control plug wire. Compared to a fully enclosed structure, the semi-open design eliminates the need for complex insertion. Simply bring the openings of the live wire terminal 13 and the neutral wire terminal 14 closer together, and as the heat-conducting component 19 performs its translational movement, the live wire terminal 13 and the neutral wire terminal 14 naturally embed into the first holding cavity 191 and the second holding cavity 192. This greatly simplifies the installation process, improves assembly efficiency, and is particularly suitable for large-scale production scenarios.

[0035] Figure 9A schematic diagram of the second embodiment of the temperature-controlled plug wire for charging new energy vehicles disclosed in this utility model is shown. It can be seen that the difference between this embodiment and the first embodiment is that the three-pole plug 1 also includes a first thermally conductive adhesive molding body 110, a second thermally conductive adhesive molding body 111, and a third thermally conductive adhesive molding body 112. The first thermally conductive adhesive molding body 110 is formed by curing thermally conductive adhesive that fills the space between the first holding cavity 191 and the live wire terminal 13. The second thermally conductive adhesive molding body 111 is formed by curing thermally conductive adhesive that fills the space between the second holding cavity 192 and the neutral wire terminal 14. The third thermally conductive adhesive molding body 112 is formed by curing thermally conductive adhesive that fills the space between the temperature sensing switch 18 and the insertion cavity 193. Thus, on the one hand, due to the excellent thermal conductivity of the thermally conductive adhesive, the live wire terminal 13, neutral wire terminal 14, and temperature sensor switch 18 are tightly fitted to the heat-conducting component 19, which helps to eliminate any possible air gaps and ensures that the heat generated by the live wire terminal 13 and neutral wire terminal 14 is quickly conducted to the temperature sensor switch 18. The temperature sensor switch 18 can then respond promptly to temperature changes and quickly activate when the preset temperature is reached, such as cutting off the circuit, thereby providing thermal protection. On the other hand, during the injection molding process of the plastic insulator 12, the live wire terminal 13, neutral wire terminal 14, and temperature sensor switch 18 always occupy the correct assembly position relative to the heat-conducting component 19, effectively preventing positional displacement due to excessive injection force.

[0036] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A temperature-controlled plug wire for charging new energy vehicles, characterized in that, It is composed of a three-prong plug and a cable; the cable includes a bundled live wire, neutral wire, ground wire, charging connection confirmation wire, and charging control guide wire; the three-prong plug includes a support frame, a plastic insulator, a live wire terminal, a neutral wire terminal, a ground wire terminal, a CC terminal, a CP terminal, a temperature sensing switch, and a heat-conducting component; the support frame serves as the foundation for fixing the live wire terminal, the neutral wire terminal, the ground wire terminal, the CC terminal, the CP terminal, and the heat-conducting component, and it also serves as... The plastic insulator serves as the injection molding growth base; the live wire terminal, the neutral wire terminal, the ground wire terminal, the cc terminal, and the cp terminal are respectively used as the clamping connection base for the live wire, the neutral wire, the ground wire, the charging connection confirmation line, and the charging control guide line; the heat-conducting component simultaneously holds the live wire terminal and the neutral wire terminal and transfers heat through thermal conduction; the temperature sensing switch uses the heat-conducting component as the insertion base and is concealed within the plastic insulator; The temperature sensing switch is grounded and is simultaneously electrically connected to the charging control guide line.

2. The temperature-controlled plug wire for charging new energy vehicles according to claim 1, characterized in that... The heat-conducting component is simultaneously formed with a first holding cavity, a second holding cavity, and an insertion cavity for inserting the temperature sensing switch; after the heat-conducting component is positioned, the live wire terminal and the neutral wire terminal are respectively held by the first holding cavity and the second holding cavity.

3. The temperature-controlled plug wire for charging new energy vehicles according to claim 2, characterized in that... The heat-conducting component is also formed with positioning posts; there are multiple positioning posts, which are evenly distributed on the bottom wall of the heat-conducting component; multiple positioning holes adapted to the positioning posts are formed on the stabilizing frame.

4. The temperature-controlled plug wire for charging new energy vehicles according to claim 2, characterized in that... Both the first holding cavity and the second holding cavity are semi-open; during the process of the heat-conducting component performing translational movement, the live wire terminal and the neutral wire terminal are embedded into the first holding cavity and the second holding cavity respectively.

5. The temperature-controlled plug wire for charging new energy vehicles according to claim 2, characterized in that... The three-pole plug further includes a first thermally conductive adhesive molded body and a second thermally conductive adhesive molded body; the first thermally conductive adhesive molded body is formed by curing thermally conductive adhesive that fills the first holding cavity and the live wire terminal; and the second thermally conductive adhesive molded body is formed by curing thermally conductive adhesive that fills the second holding cavity and the neutral wire terminal.

6. The temperature-controlled plug wire for charging new energy vehicles according to claim 2, characterized in that... The three-pole plug also includes a third thermally conductive adhesive molded body; the third thermally conductive adhesive molded body is formed by curing thermally conductive adhesive that fills the space between the temperature sensing switch and the insertion cavity.

7. The temperature-controlled plug wire for charging new energy vehicles according to any one of claims 1-6, characterized in that... After the plastic insulator has cured and formed, both the cc terminal and the cp terminal are exposed.

8. The temperature-controlled plug wire for charging new energy vehicles according to any one of claims 1-6, characterized in that... The heat-conducting component is made of alumina ceramic, aluminum nitride ceramic or silicon nitride ceramic.

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