New energy electric vehicle charging wire with current protection function

Abstract

The utility model discloses a new energy electric vehicle charging wire with a current protection function, which comprises a connector, the connector comprises a shell, the shell comprises an upper cover and a lower cover, a fuse is arranged in the shell, one end of the fuse is provided with a first fuse terminal, the other end of the fuse is provided with a second fuse terminal, and the first fuse terminal is connected with the second fuse terminal. The fuse is connected to a live wire of the plug through the first fuse terminal and the second fuse terminal; a ground wire and a zero wire of the plug are respectively arranged on two sides of the fuse, a first separating rib is arranged between the ground wire and the fuse, and a second separating rib is arranged between the zero wire and the fuse. According to the utility model, the connector with a current protection function is directly added on the line body of the charging power line, and when the current is overloaded in the charging process, the fuse in the connector can automatically cut off the line core, so that the circuit is disconnected, and the charging is not continued.

Description

Technical Field

[0001] This utility model relates to a charging cable for new energy electric vehicles, specifically a charging cable for new energy electric vehicles with current protection function. Background Technology

[0002] New energy vehicles can generally be charged by directly connecting the corresponding plug to the corresponding socket. However, prolonged charging with the plug and socket directly connected will inevitably cause the plug or wires to generate more heat, increasing the safety risks of charging. Therefore, current new energy vehicle charging cables have built-in temperature switches or temperature sensors in the plug to monitor the internal temperature of the power cable plug in real time during charging, thereby ensuring charging safety. However, this method has some drawbacks: for example, corresponding component fixing slots need to be designed inside the plug, and the plug frame needs to be remolded; the production process requires connecting the wires to the temperature switch or temperature sensor, resulting in low production efficiency; the addition of temperature switches and temperature sensors increases costs, and the accuracy of temperature switches and temperature sensors varies, which may lead to functional failure after repeated charging and discharging for a period of time, posing a safety hazard after multiple charging cycles. Utility Model Content

[0003] Due to the aforementioned drawbacks of current electric vehicle charging plugs, there is an urgent need to develop a better product structure and method to avoid these problems. This electric vehicle charging cable with current protection uses a traditional household plug without adding any internal components. Household plug technology is mature, and most processes can be automated, resulting in high production efficiency and stable product quality. This technology adds a current protection connector to the charging cable. When an overload occurs during charging, the fuse inside the connector automatically cuts off the wire core, breaking the circuit and stopping charging. Manual replacement of the fuse is required to restore normal charging functionality.

[0004] To achieve the above-mentioned technical objectives, the technical solution of this utility model is as follows:

[0005] A charging cable for new energy electric vehicles with current protection function includes a connector. The connector includes a housing, which includes an upper cover and a lower cover. A fuse is disposed inside the housing. One end of the fuse has a first fuse terminal, and the other end has a second fuse terminal. The fuse is connected to the live wire of the plug through the first fuse terminal and the second fuse terminal. The ground wire and neutral wire of the plug are located on both sides of the fuse. A first partition is disposed between the ground wire and the fuse, and a second partition is disposed between the neutral wire and the fuse.

[0006] The isolation of each conductor by the partitions ensures that the creepage distance between each pole meets the standard requirements, preventing short circuits with other poles during product operation and ensuring product compliance. Simultaneously, the fuse is positioned between the two partitions to prevent displacement during drops or movement, ensuring product safety.

[0007] The first and second ribs form a fuse positioning groove, which is used to position the fuse.

[0008] The fuse positioning groove includes a first fuse terminal mounting groove and a second fuse terminal mounting groove. The first fuse terminal is installed in the first fuse terminal mounting groove, and the second fuse terminal is installed in the second fuse terminal mounting groove.

[0009] The first fuse terminal mounting slot and / or both of the first fuse terminal mounting slots are provided with positioning posts. The positioning posts are used to limit the fuse terminal and prevent the fuse terminal from moving away from the fuse. By using the positioning posts to block and limit the terminal, the terminal is prevented from moving left or right, thus avoiding potential safety hazards to the product.

[0010] A wire inlet and a wire outlet are provided between the upper cover and the lower cover. The wire inlet is provided with an inlet circular sealing ring, which is used to seal the gap between the wire and the wire inlet. The wire outlet is provided with an outlet circular sealing ring, which is used to seal the gap between the wire and the wire outlet.

[0011] A first sealing strip and a second sealing strip are provided between the upper cover and the lower cover. The live wire, ground wire, and neutral wire are all located between the first sealing strip and the second sealing strip. Both the first sealing strip and the second sealing strip are used to seal the gap between the upper cover and the lower cover. When the first sealing strip and the second sealing strip are installed on both sides of the housing, the sealing strips provide a waterproof and dustproof effect after the upper and lower covers are fastened.

[0012] The shell is sealed around its perimeter using an imported circular sealing ring, an exported circular sealing ring, a first sealing strip, and a second sealing strip to ensure that the assembled product meets the requirements for waterproofing and dustproofing.

[0013] The upper and lower covers are integrated on one side, and fastened together on the other side by snaps and baffles. The upper and lower covers are injection molded on the same mold, connecting them together on one side and allowing them to be folded and closed.

[0014] The beneficial effects of this utility model are:

[0015] 1. The charging plug can use a traditional household plug. No additional parts are added inside the plug. Moreover, the technology of household plugs is now mature, and most processes can be carried out by automated equipment, resulting in high production efficiency and stable product quality.

[0016] 2. Add a current protection connector directly to the charging power cord. When the current is overloaded during charging, the fuse inside the connector will automatically cut off the wire core, thereby disconnecting the circuit and stopping the charging process.

[0017] 3. The connector is detachable. When recharging is required, a professional can replace the fuse to restore normal charging function.

[0018] 4. This connector is waterproof and dustproof, and can be used normally even outdoors or in rainy weather.

[0019] 5. This connector features a flip-top design, allowing the entire product to be completed with a single mold, resulting in low development costs. The top and bottom covers can be directly snapped together, leading to high assembly efficiency. Attached Figure Description

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0021] Figure 1 This is an exploded view of the structure of this utility model.

[0022] Figure 2 This is a schematic diagram of the plastic shell structure of this utility model.

[0023] Figure 3 This is a schematic diagram showing the wire connection and positional relationship of this utility model.

[0024] Figure 4 This is a three-dimensional assembly diagram of the present invention.

[0025] Figure 5 This is a schematic diagram of the assembly plane of this utility model.

[0026] Figure 6 This is a schematic diagram of the interface of this utility model. Detailed Implementation

[0027] like Figure 1-6As shown, a charging cable for new energy electric vehicles with current protection function includes a connector. The connector includes a plastic housing 12, which includes an upper cover 121 and a lower cover 122. One side of the upper cover 121 is connected to one side of the lower cover 122. The upper cover 121 and the lower cover 122 have a flip-top structure. At the openings of the upper cover 121 and the lower cover 122, a plastic buckle 16 is provided on the edge of the upper cover 121, and a plastic baffle 17 is provided on the edge of the lower cover 122. When the upper cover 121 and the lower cover 122 are closed, the plastic buckle 16 and the plastic baffle 17 are engaged.

[0028] Inside the plastic housing 12, a fuse positioning groove 111 is provided between the upper cover 121 and the lower cover 122. The fuse positioning groove 111 is composed of a first partition 22 and a second partition 21. A first fuse terminal mounting groove 91 is provided at one end of the fuse positioning groove 111, and a first fuse terminal 9 is installed in the first fuse terminal mounting groove 91. The first fuse terminal 9 has a first fuse terminal cap 15 for connecting to the fuse 11. A second fuse terminal mounting groove 101 is provided at the other end of the fuse positioning groove 111, and a second fuse terminal 10 is installed in the second fuse terminal mounting groove 101. The second fuse terminal 10 has a second fuse terminal cap 13 for connecting to the fuse 11. Both ends of the fuse 11 are connected to the first fuse terminal cap 15 and the second fuse terminal cap 13 respectively, and are placed into the fuse positioning groove 111.

[0029] On both sides of the first fuse terminal cap 15, the first fuse terminal mounting groove 91 is provided with positioning posts 18 and 19, which limit the two ends of the first fuse terminal cap 15 to prevent it from moving left and right. On both sides of the second fuse terminal cap 13, the second fuse terminal mounting groove 101 is provided with positioning posts 18 and 19, which limit the two ends of the second fuse terminal cap 13 to prevent it from moving left and right.

[0030] Fuse 11 is connected to the live wire 2 of the plug through the first fuse terminal 9 and the second fuse terminal 10. The ground wire 3 and the neutral wire 4 of the plug are located on both sides of the fuse positioning groove 111. The first partition 22 is located between the ground wire 3 and the fuse positioning groove 111 to electrically isolate the ground wire 3 and the live wire 2 (fuse 11). The second partition 21 is located between the neutral wire 4 and the fuse positioning groove 111 to electrically isolate the neutral wire 4 and the live wire 2.

[0031] At one end of the plastic housing 12, a wire inlet 61 is provided between the upper cover 121 and the lower cover 122, and an inlet circular sealing ring 6 is provided at the wire inlet 61. At the other end of the plastic housing 12, a wire outlet 71 is provided between the upper cover 121 and the lower cover 122, and an outlet circular sealing ring 7 is provided at the wire outlet 71. On both sides of the plastic housing 12, a first sealing strip groove and a second sealing strip groove are provided between the upper cover 121 and the lower cover 122. The fuse positioning groove 111, the live wire 2, the ground wire 3, and the neutral wire 4 are all located between the first sealing strip groove and the second sealing strip groove. A first sealing strip 5 is installed in the first sealing strip groove, and a second sealing strip 8 is installed in the second sealing strip groove. The gaps at both ends of the plastic housing 12 are sealed by the inlet circular sealing ring 6 and the outlet circular sealing ring 7, and the gaps on both sides of the plastic housing 12 are sealed by the first sealing strip 5 and the second sealing strip 8, so as to achieve a seal around the plastic housing 12 and ensure that the product meets the requirements for waterproofing and dustproofing after assembly.

[0032] Assembly method:

[0033] 1. Strip the outer sheath of conductor 1 according to the standard size requirements, and then strip the inner core of the live wire 2 inside conductor 1 according to the standard size.

[0034] 2. Pass the wire 1 at one end of the plastic housing 12 through the inlet circular sealing ring 6, and pass the wire 1 at the other end of the plastic housing 12 through the outlet circular sealing ring 7.

[0035] 3. Rivet the first fuse terminal 9 and the second fuse terminal 10 of the live wire 2 core.

[0036] 4. Insert one end of fuse 11 into the first fuse terminal cap 15 and the other end into the second fuse terminal cap 13, so that the live wires 2 at both ends are connected.

[0037] 5. After the live wire 2 is connected, insert the fuse and the first fuse terminal 9 and the second fuse terminal 10 into the fuse positioning groove 111.

[0038] 6. Place the ground wire 3 core on one side of the first partition 22 of the fuse positioning groove 111. The first partition 22 is located between the ground wire 3 core and the live wire 2 core. Place the neutral wire 4 core on one side of the second partition 21 of the fuse positioning groove 111. The second partition 21 is located between the neutral wire 4 core and the live wire 2 core.

[0039] 7. Place the inlet circular sealing ring 6, the outlet circular sealing ring 7, the first sealing strip 5, and the second sealing strip 8 in the designated positions on the plastic housing 12 in sequence.

[0040] 8. Snap the top cover 121 and the bottom cover 122 together, and snap the plastic buckle 16 and the plastic baffle 17 together to complete the assembly of the whole product.

[0041] The above embodiments do not limit the present invention in any way. All technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of the present invention.

Claims

1. A charging cable for new energy electric vehicles with current protection function, characterized in that: The device includes a connector, which includes a housing, an upper cover, and a lower cover. A fuse is disposed inside the housing. One end of the fuse has a first fuse terminal, and the other end has a second fuse terminal. The fuse is connected to the live wire of the plug through the first and second fuse terminals. The ground wire and neutral wire of the plug are located on both sides of the fuse. A first partition is disposed between the ground wire and the fuse, and a second partition is disposed between the neutral wire and the fuse.

2. The new energy electric vehicle charging cable with current protection function according to claim 1, characterized in that: The first and second ribs form a fuse positioning groove, which is used to position the fuse.

3. The new energy electric vehicle charging cable with current protection function according to claim 2, characterized in that: The fuse positioning groove includes a first fuse terminal mounting groove and a second fuse terminal mounting groove. The first fuse terminal is installed in the first fuse terminal mounting groove, and the second fuse terminal is installed in the second fuse terminal mounting groove.

4. The new energy electric vehicle charging cable with current protection function according to claim 3, characterized in that: The first fuse terminal mounting slot and / or the first fuse terminal mounting slot are provided with positioning posts, which are used to limit the fuse terminal.

5. The new energy electric vehicle charging cable with current protection function according to claim 1, characterized in that: A wire inlet and a wire outlet are provided between the upper cover and the lower cover. The wire inlet is provided with an inlet circular sealing ring, which is used to seal the gap between the wire and the wire inlet. The wire outlet is provided with an outlet circular sealing ring, which is used to seal the gap between the wire and the wire outlet.

6. The new energy electric vehicle charging cable with current protection function according to claim 1, characterized in that: A first sealing strip and a second sealing strip are provided between the upper cover and the lower cover. The live wire, ground wire, and neutral wire are all located between the first sealing strip and the second sealing strip. Both the first sealing strip and the second sealing strip are used to seal the gap between the upper cover and the lower cover.

7. The new energy electric vehicle charging cable with current protection function according to claim 1, characterized in that: The upper and lower covers are integrated on one side, and fastened together on the other side by buckles and baffles.

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