New energy electric vehicle charging wire with current protection function

Abstract

The invention 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, and the other end of the fuse is provided with a 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 invention, 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 charging is not continued.

Description

Technical Field

[0001] The invention relates to a new energy electric vehicle charging cable, in particular to a new energy electric vehicle charging cable with a current protection function. Background Art

[0002] New energy vehicles can generally be charged directly by connecting the corresponding plug to the corresponding socket and turning on the power. However, if the plug and socket are plugged in for a long time for charging, it will inevitably cause the plug or wire to generate more heat, thereby increasing the safety risks of charging. Therefore, the current new energy vehicle charging power cord will have a built-in temperature switch or temperature sensor in the plug to monitor the temperature inside the power cord plug in real time during charging, so as to ensure the safety of charging. However, this method has some disadvantages: for example, the corresponding component fixing slots need to be designed inside the plug, and the inner frame of the plug needs to be re-molded; the wires need to be connected to the temperature switch or temperature sensor during the production process, which has low production efficiency; adding components such as temperature switches and temperature sensors will increase costs, and the accuracy of temperature switches and temperature sensors is uneven, which will cause functional failure after repeated charging and discharging for a period of time, and there are safety risks after multiple charges. Summary of the invention

[0003] Since the current new energy electric vehicle charging plug has the above disadvantages during the charging process, it is urgent to develop a better product structure and method to avoid the above problems. This new energy electric vehicle charging line with current protection function still uses a traditional household plug as the charging plug. No parts are added inside the plug. Now the household plug technology is mature, and most of the processes can be produced by automated equipment, with high production efficiency and stable product quality. This technology is to add a connector with current protection function to the body of the charging power line. When the current is overloaded during the charging process, the fuse in the connector will automatically cut off the wire core, thereby disconnecting the circuit and will not continue charging. It is necessary to manually replace the new fuse again to restore the normal charging function.

[0004] In order to achieve the above technical purpose, the technical solution of the present invention is:

[0005] A new energy electric vehicle charging cable with a current protection function comprises a connector, wherein the connector comprises a shell, wherein the shell comprises an upper cover and a lower cover, wherein a fuse is arranged in the shell, wherein a first fuse terminal is arranged at one end of the fuse, and a second fuse terminal is arranged at the other end, wherein the fuse is connected to a live wire of a plug through the first fuse terminal and the second fuse terminal; a ground wire and a neutral wire of the plug are respectively located on both sides of the fuse, a first partition rib is arranged between the ground wire and the fuse, and a second partition rib is arranged between the neutral wire and the fuse.

[0006] The wire cores are isolated by the ribs to ensure that the creepage distance between each pole meets the standard requirements. The product will not short-circuit with the other pole during power-on, ensuring that the product meets the standard requirements. At the same time, the fuse is set between the two ribs to ensure that the position of the fuse will not move during the product falling or moving, ensuring the safety of the product.

[0007] A fuse positioning groove is formed between the first partition rib and the second partition rib, and the fuse positioning groove is used to position the fuse.

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

[0009] The first fuse terminal installation slot and / or the first fuse terminal installation slot are both provided with positioning posts, and the positioning posts are used to limit the fuse terminal to prevent the fuse terminal from moving to the side away from the fuse. The positioning posts are used to block and limit the terminal, and the terminal is prevented from moving left and right to avoid potential safety hazards in 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 arranged between the upper cover and the lower cover, and the live wire, the ground wire, and the neutral wire are all located between the first sealing strip and the second sealing strip, and the first sealing strip and the second sealing strip are both used to seal the gap between the upper cover and the lower cover. The first sealing strip and the second sealing strip are installed on both sides of the housing, and when the upper and lower covers are fastened, the sealing strips play a waterproof and dustproof role.

[0012] The shell is sealed all around by means of an inlet circular sealing ring, an outlet circular sealing ring, a first sealing strip and a second sealing strip to ensure that the product meets the requirements for waterproofing and dustproofing after assembly.

[0013] The upper cover and the lower cover are integrally structured on one side, and are buckled with a baffle on the other side. The upper cover and the lower cover are completed by injection molding on a set of molds, so that the upper cover and the lower cover are connected together on one side and can be turned over and closed.

[0014] The beneficial effects of the present invention are:

[0015] 1. The charging plug can use a traditional household plug, and no parts are added inside the plug. Now the technology of household plugs is mature, and most of the processes can be produced by automated equipment, with high production efficiency and stable product quality.

[0016] 2. Add a connector with current protection function directly to the body of the charging power cord. When the current is overloaded during charging, the fuse in the connector will automatically cut off the wire core, thereby disconnecting the circuit and no longer charging.

[0017] 3. The connector is a detachable structure. When charging is needed again, professionals can replace the fuse with a new one to restore normal charging function.

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

[0019] 5. This connector is designed with a flip-top structure. The entire product can be completed with a set of molds, with low development costs. The upper and lower covers can be directly fastened, and the assembly efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0021] Figure 1 It is a schematic diagram of the explosion of the structure of the present invention.

[0022] Figure 2 It is a schematic diagram of the structure of the plastic shell of the present invention.

[0023] Figure 3 It is a schematic diagram of the wire connection and position relationship of the present invention.

[0024] Figure 4 It is a schematic diagram of the assembly of the present invention.

[0025] Figure 5 It is a schematic diagram of the assembly plan of the present invention.

[0026] Figure 6 It is a schematic diagram of the interface of the present invention. DETAILED DESCRIPTION

[0027] like Figure 1-6 As shown, a new energy electric vehicle charging cable with a current protection function includes a connector, the connector includes a plastic shell 12, the plastic shell 12 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, and the upper cover 121 and the lower cover 122 are flip-type structures. At the opening of the upper cover 121 and the lower cover 122, a plastic buckle 16 is set on the edge of the upper cover 121, and a plastic baffle 17 is set 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 buckled.

[0028] In the plastic housing 12, a fuse positioning groove 111 is provided between the upper cover 121 and the lower cover 122, and the fuse positioning groove 111 is composed of a first partition rib 22 and a second partition rib 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, and the first fuse terminal 9 has a first fuse terminal cap 15 connected 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, and the second fuse terminal 10 has a second fuse terminal cap 13 connected 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 in 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 columns 18 and positioning columns 19, and the two ends of the first fuse terminal cap 15 are limited by the positioning columns 18 and 19 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 columns 18 and positioning columns 19, and the two ends of the second fuse terminal cap 13 are limited by the positioning columns 18 and 19 to prevent it from moving left and right.

[0030] The 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 respectively located on both sides of the fuse positioning groove 111. The first partition rib 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 rib 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 shell 12, a wire inlet 61 is arranged between the upper cover 121 and the lower cover 122, and an inlet circular sealing ring 6 is arranged at the wire inlet 61; at the other end of the plastic shell 12, a wire outlet 71 is arranged between the upper cover 121 and the lower cover 122, and an outlet circular sealing ring 7 is arranged at the wire outlet 71; on both sides of the plastic shell 12, a first sealing strip groove and a second sealing strip groove are arranged between the upper cover 121 and the lower cover 122, and 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, the first sealing strip groove is installed with a first sealing strip 5, and the second sealing strip groove is installed with a second sealing strip 8, the gaps at both ends of the plastic shell 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 shell 12 are sealed by the first sealing strip 5 and the second sealing strip 8, so as to achieve sealing around the plastic shell 12 to ensure that the product meets the requirements of waterproof and dustproof after assembly.

[0032] Assembly Method:

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

[0036] 4. Insert one end of the 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 conductive.

[0037] 5. After the live wire 2 is turned on, the fuse and the first fuse terminal 9 and the second fuse terminal 10 are inserted 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, and 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, and 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 of the plastic housing 12 in sequence.

[0040] 8. Buckle the upper cover 121 and the lower cover 122 together, and buckle the plastic buckle 16 and the plastic baffle 17 together to complete the assembly of the entire product.

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

Claims

1. New energy electric vehicle charging cable with current protection function, characterized by: The invention comprises a connector, wherein the connector comprises a shell, the shell comprises an upper cover and a lower cover, a fuse is arranged in the shell, a first fuse terminal is arranged at one end of the fuse, and a second fuse terminal is arranged at the other end, 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 the neutral wire of the plug are respectively located on both sides of the fuse, a first partition rib is arranged between the ground wire and the fuse, and a second partition rib is arranged between the neutral wire and the fuse.

2. The new energy electric vehicle charging cable with current protection function according to claim 1 is characterized in that: A fuse positioning groove is formed between the first partition rib and the second partition rib, and the fuse positioning groove is used to position the fuse.

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

4. The new energy electric vehicle charging cable with current protection function according to claim 3 is characterized in that: The first fuse terminal installation slot and / or the first fuse terminal installation slot are both provided with positioning posts, and the positioning posts 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 arranged between the upper cover and the lower cover, the live wire, the ground wire and the neutral wire are all located between the first sealing strip and the second sealing strip, and the first sealing strip and the second sealing strip are both 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 cover and the lower cover are integrally structured on one side, and are buckled with a baffle on the other side.

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