New energy automobile power grid load switching device

Abstract

The utility model discloses a new energy automobile power grid load switching device, and relates to the technical field of power control. The system is technically characterized by comprising a first power supply circuit and a second power supply circuit, the first power supply line comprises an electric energy output line and an electric energy input line; the first power supply circuit and the second power supply circuit have the same structure, and a movable conductive block is arranged therebetween; the sides, away from each other, of the middle positions of the first power supply circuit and the second power supply circuit are each provided with a magnetic unit. The magnetic attraction unit can attract the movable conductive block to move towards the first power supply line or the second power supply line on the adjacent side. When different power grids are switched, only the magnetic suction units on different sides need to be started, the operation process is simple and convenient, the switching efficiency is higher, and the use safety of the new energy automobile can be effectively improved.

Description

Technical Field

[0001] The present application relates to the field of power control technology, and in particular to a load switching device for a new energy vehicle power grid. Background Art

[0002] With the continuous development of new energy vehicles in recent years, large-scale new energy vehicles have become popular among the population. However, the existing new energy vehicle power grid is often overloaded during use. At this time, it is necessary to use a load switching device to switch the vehicle power grid and switch its power supply line to a new generator system.

[0003] Since the switching speed of the traditional power grid load switching device is not fast enough, it may have a certain impact on the safety of new energy vehicles. Therefore, the traditional power grid load switching device has been improved in the Chinese patent document with application number 202021147886.X. However, the general process of this load switching device when switching the power grid is as follows: first press the push rod downward, thereby driving the movable sleeve to compress the spring, slide downward on the outer surface of the handle, and then drive the vertical rod to rotate the handle, and the movable sleeve rotates to the limit cylinder on the other side, and then release the push rod, so that the movable sleeve is stuck in the corresponding limit cylinder under the action of the spring, and the handle drives the vertical rod to rotate while driving the disk to rotate, and the conversion switch can be driven by the connecting rod to be stuck in the corresponding power connection head, thereby completing the switching. However, the steps of this load switching device when switching the power grid are relatively cumbersome, and different structural parts need to be moved frequently. Therefore, it still has the problem of slow switching speed during use, and the safety improvement of the use of new energy vehicles is limited. Utility Model Content

[0004] The present application provides a new energy vehicle power grid load switching device, which can increase the speed of power grid switching and further enhance the safety of new energy vehicle use.

[0005] The above-mentioned purpose of the present application is achieved through the following technical solutions:

[0006] A new energy vehicle power grid load switching device comprises a first power supply line and a second power supply line;

[0007] The first power supply line includes an electric power output line and an electric power input line, wherein the electric power output line and the electric power input line are arranged in sequence along the vertical direction and a gap is formed between the ends of the two lines that are close to each other;

[0008] The first power supply line and the second power supply line have the same structure, and a movable conductive block is provided between the two, and the movable conductive block can move freely between the first power supply line and the second power supply line;

[0009] A magnetic unit is provided on the mutually distant sides of the middle position of the first power supply line and the second power supply line respectively; the magnetic unit can attract the movable conductive block to move toward the first power supply line or the second power supply line on the adjacent side, thereby connecting the mutually close ends of the power output line and the power input line on the corresponding side.

[0010] Furthermore, a protective shell is provided on the outer side of the middle position of the first power supply line and the second power supply line, and the power output line and the power input line on the same side are fixedly connected to the protective shell; the two magnetic suction units are also installed on the inner wall of the protective shell.

[0011] Furthermore, the movable conductive block consists of two parts: a metal iron core and a metal copper shell.

[0012] Furthermore, the magnetic attraction unit is an electromagnet, and the two magnetic attraction units are electrically connected to a battery through the same control system, and the battery is installed in the protective shell.

[0013] Furthermore, the power output line and the power input line on the same side are each provided with a conductive socket at their mutually adjacent ends, and an opening is provided on one side of the socket close to the center of the protective shell, and the shape of the opening matches the shape of the movable conductive block.

[0014] Furthermore, an insulating guide rod is respectively provided through the upper and lower ends of the movable conductive block, and the two insulating guide rods are both slidably connected to the movable conductive block;

[0015] The two ends of the upper insulating guide rod are respectively fixedly connected to the socket interfaces on the two power output lines, and the two ends of the lower insulating guide rod are respectively fixedly connected to the socket interfaces on the two power input lines.

[0016] Furthermore, rubber insulating pads are embedded on opposite sides of the movable conductive block along the axial direction of the insulating guide rod.

[0017] In summary, the present application includes at least one of the following beneficial technical effects:

[0018] In the present application, when it is necessary to switch different power grid lines for new energy vehicles, it is only necessary to start the magnetic suction unit on the first power supply line side or the magnetic suction unit on the second power supply line side. The magnetic suction unit can drive the movable conductive block to automatically move to the corresponding first power supply line side or second power supply line side through magnetic suction force, so as to connect the first power supply line or the second power supply line that needs to be used. Compared with the existing technical solutions that require moving multiple structural parts to achieve power grid switching, the present application is obviously simpler when switching the power grid, effectively improves the switching efficiency, and further ensures the safety of the use of new energy vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 It is a schematic diagram of the overall structure of this application;

[0021] Figure 2 is a schematic diagram of the structure after the protective shell of the present application is opened;

[0022] Figure 3 It is a schematic diagram of the connection between the two magnetic suction units of the present application and the control system and the battery;

[0023] Figure 4 It is a transverse cross-sectional view of the movable conductive block of the present application.

[0024] Figure numerals: 1. first power supply line; 101. power output line; 102. power input line; 2. second power supply line; 3. movable conductive block; 4. magnetic unit; 5. protective shell; 6. control system; 7. battery; 8. socket interface; 9. insulating guide rod. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application is clearly and completely described below. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work also fall within the scope of protection of the present application.

[0026] like Figure 1 and Figure 2As shown, a new energy vehicle grid load switching device disclosed in the present application includes a first power supply line 1 and a second power supply line 2; the first power supply line 1 includes an electric energy output line 101 and an electric energy input line 102, and the electric energy output line 101 and the electric energy input line 102 are arranged in sequence along the vertical direction and there is a gap between the mutually close ends of the two; the first power supply line 1 and the second power supply line 2 have the same structure, and a movable conductive block 3 is arranged between the two, and the movable conductive block 3 can move freely between the first power supply line 1 and the second power supply line 2; a magnetic attraction unit 4 is respectively provided on the mutually distant sides of the middle position of the first power supply line 1 and the second power supply line 2; the magnetic attraction unit 4 can attract the movable conductive block 3 to move toward the first power supply line 1 or the second power supply line 2 on the adjacent side, thereby connecting the mutually close ends of the electric energy output line 101 and the electric energy input line 102 on the corresponding side.

[0027] In the above embodiments, the power output line 101 in the first power supply line 1 and the power output line 101 in the second power supply line 2 in the present application are respectively connected to different power grid power supply systems, while the power input line 102 in the first power supply line 1 and the power input line 102 in the second power supply line 2 are both connected to the line of the new energy vehicle power system. When the power output line 101 and the power input line 102 in the first power supply line 1 are connected, power can be supplied to the new energy vehicle through one of the power grid systems; when the power output line 101 and the power input line 102 in the second power supply line 2 are connected, power can be supplied to the new energy vehicle through another power grid system.

[0028] The structures of the first power supply circuit 1 and the second power supply circuit 2 of the present application are the same, and only the working principle of the first power supply circuit 1 is described here. There is a gap between the mutually close ends of the power output line 101 and the power input line 102 in the first power supply circuit 1, so that they are in a disconnected state under normal conditions, and the corresponding power output line 101 cannot be supplied to the new energy vehicle through the power input line 102. If the first power supply circuit 1 is to be turned on, it is only necessary to start the magnetic suction unit 4 on the same side of the first power supply circuit 1. After the magnetic suction unit 4 is started, it can generate a magnetic suction force on the movable conductive block 3. This force can automatically move the movable conductive block 3 between the power output line 101 and the power input line 102 of the first power supply circuit 1, and turn the two on. At this time, the current in the power output line 101 of the first power supply circuit 1 can be smoothly supplied to the power system of the new energy vehicle through the power input line 102. Similarly, when it is necessary to disconnect the first power supply line 1 and enable the power supply system connected to the second power supply line 2 to supply power to the power system of the new energy vehicle, turn off the magnetic unit 4 on the side of the first power supply line 1 and turn on the magnetic unit 4 on the side of the second power supply line 2. The magnetic unit 4 on the side of the second power supply line 2 can use the magnetic attraction force it generates to guide the movable conductive block 3 to move between the power output line 101 and the power input line 102 in the second power supply line 2. At this time, the second power supply line 2 can be turned on, thereby realizing the switching of different power grid power supply systems.

[0029] Compared with the prior art solution that requires moving multiple structural parts each time the power grid system is switched, the present application only needs to start the magnetic suction unit 4 on the corresponding side. The entire switching process is obviously simpler and more efficient, further improving the switching speed of the new energy vehicle power grid device, and the corresponding safety of the use of new energy vehicles is also further improved.

[0030] Furthermore, if Figure 1 and Figure 2 As shown, a protective shell 5 is provided on the outer side of the middle position of the first power supply line 1 and the second power supply line 2, and the power output line 101 and the power input line 102 on the same side are fixedly connected to the protective shell 5; the two magnetic suction units 4 are also installed on the inner wall of the protective shell 5.

[0031] In the above embodiments, the protective shell 5 of the present application can not only protect the middle part of the first power supply line 1 and the second power supply line 2 to isolate them from the external environment and avoid being affected by the external environment, but also provide an installation basis for structural parts such as the magnetic suction unit 4 used to switch the power grid system.

[0032] Furthermore, if Figure 4 As shown, the movable conductive block 3 is composed of two parts: a metal iron core and a metal copper shell.

[0033] In the above embodiments, the core of the movable conductive block 3 of the present application is made of metal iron, so that it can ensure that when the magnetic attraction unit 4 is working, it can generate a magnetic attraction force on the movable conductive block 3, thereby guiding it to move quickly. The present application is coated with a metal copper shell on the outside of the metal iron core because metal copper is a good conductor. When the movable conductive block 3 moves between the power input line 102 and the power output line 101 on one side and connects them, the movable conductive block 3 mainly bridges the mutually close ends of the power input line 102 and the power output line 101 by the metal copper shell on its outside, so that the power output line 101 can use the metal copper with lower conductivity to mainly transmit current to the power input line 102, which can improve the power transmission efficiency (the movable conductive block 3 must contain iron material to facilitate the attraction of the magnetic attraction unit 4. Since the conductivity of iron is much higher than that of copper, if the movable conductive block 3 is all If it is composed of iron, it may increase the power loss between the power input line 102 and the power output line 101, affecting the current transmission. Therefore, the present application ensures that there is a metal iron core inside the movable conductive block to facilitate the driving of the magnetic suction unit 4, and at the same time, a metal copper shell is arranged outside the metal iron core. Since the conductivity of copper is much lower than that of iron, most of the current transmitted by the power output line 101 will be transmitted from the copper shell to the power input line 102, which can reduce the current loss at the movable conductive block 3. In actual use, an insulating interlayer can be added between the metal iron core and the metal copper shell to avoid direct contact between the metal iron core and the metal copper shell, which can further improve the conductive effect of the movable conductive block 3).

[0034] Furthermore, if Figure 2 and Figure 3 As shown, the magnetic unit 4 is an electromagnet, and the two magnetic units 4 are electrically connected to the battery 7 through the same control system 6, and the battery 7 is installed in the protective shell 5.

[0035] In the above embodiment, the magnetic attraction unit 4 of the present application is an electromagnet, so by controlling the on-off between the electromagnet and the battery 7, the electromagnet can be switched to a state of being magnetic or not. The control system 6 of the present application includes a two-way knife switch, which can control the working state of the two electromagnets. The wiring diagram of the battery 7, the two-way knife switch in the control system 6 and the two electromagnets can be referred to Figure 3When the blade of the two-way knife switch is moved from the knife clamp on one side to the knife clamp on the other side, one of the electromagnets can be disconnected and the other electromagnet can be turned on simultaneously, thereby achieving the effect of driving the movable conductive block 3 to move in different directions, which is simple and efficient to operate. In addition, the battery 7 of the present application can be connected to the first power supply line 1 and the second power supply line 2 when in use, so that they can charge the battery 7 when they are turned on and used, so that the battery 7 can work continuously. In actual work, the control system 6 of the present application can also include a wireless transmission module, which is convenient for the user to remotely and actively control the start and stop status of the two magnetic suction units 4.

[0036] Furthermore, if Figure 2 As shown, the power output line 101 and the power input line 102 on the same side are each provided with a conductive socket interface 8 at their mutually adjacent ends, and an opening is provided on one side of the socket interface 8 close to the center of the protective shell 5, and the shape of the opening matches the shape of the movable conductive block 3.

[0037] In the above embodiments, the socket interfaces 8 arranged at the ends of the power output line 101 and the power input line 102 close to each other are welded together with the core wires used to transmit current inside them, so that after the two socket interfaces 8 are connected, the power output line 101 and the power input line 102 on the same side can be connected accordingly. Taking the first power supply line 1 side as an example, when it is necessary to switch the power grid to the first power supply line 1, the magnetic suction unit 4 on the first power supply line 1 side is started, and the magnetic suction unit 4 will generate suction force on the movable conductive block 3, and the movable conductive block 3 will move to the middle position of the first power supply line 1. The socket interface 8 of the present application is provided with an opening on one side close to the protective shell 5 or the movable conductive block 3, and the length of the movable conductive block 3 is greater than the distance between the two socket interfaces 8, so that the movable conductive block 3 will enter from the open ends of the two socket interfaces 8, and the movable conductive block 3 will stop after being blocked by the two socket interfaces 8, and continue to maintain a close contact state with the two socket interfaces 8 under the action of the magnetic suction unit 4, so that the circuit on the first power supply line 1 side can be smoothly conducted by the movable conductive block 3. The socket interface 8 arranged in the above manner in the present application can increase the contact area between the movable conductive block 3 and them when they are connected, thereby ensuring the stability of power supply of the corresponding power grid system.

[0038] Furthermore, if Figure 2 As shown, an insulating guide rod 9 is respectively provided through the upper and lower ends of the movable conductive block 3, and the two insulating guide rods 9 are both slidably connected to the movable conductive block 3;

[0039] The two ends of the upper insulating guide rod 9 are fixedly connected to the socket interfaces 8 on the two power output lines 101 , respectively, and the two ends of the lower insulating guide rod 9 are fixedly connected to the socket interfaces 8 on the two power input lines 102 , respectively.

[0040] In the above embodiments, the insulating guide rod 9 of the present application is arranged in the above manner, which can provide a guiding effect for the moving process of the movable conductive block 3, so that it can move smoothly in a specified direction under the action of the magnetic force of the corresponding magnetic attraction unit 4, and the insulating performance of the insulating guide rod 9 can prevent a short circuit from occurring during the moving process of the movable conductive block 3. In order to ensure the insulating performance of the insulating guide rod 9, the insulating guide rod 9 of the present application can be made of ceramic material.

[0041] Furthermore, rubber insulating pads are embedded on opposite sides of the movable conductive block 3 along the axial direction of the insulating guide rod 9 .

[0042] In the above embodiments, the rubber insulating pad on the movable conductive block 3 (this part is not shown in the drawings) is only provided in a local area of ​​its surface and is slightly protruded outward, so that when the movable conductive block 3 is attracted by the magnetic unit 4 and collides with the two sockets on one side, the rubber insulating pad on its surface can play a certain buffering role. When the magnetic attraction force generated by the magnetic unit 4 makes the movable conductive block 3 fit tightly with the two socket interfaces 8, the rubber insulating pad on the corresponding side of the movable conductive block 3 can be squeezed to be flush with the surface of the movable conductive block 3, thereby ensuring the conductive effect of the movable conductive block 3.

[0043] The implementation principle of this embodiment is: since the principle of switching from the first power supply line 1 to the second power supply line 2 is similar to that of switching from the second power supply line 2 to the first power supply line 1, only the switching from the first power supply line 1 to the second power supply line 2 is explained here.

[0044] When the new energy vehicle is in normal use, the magnetic unit 4 on the side of the first power supply line 1 is in working state, and the magnetic unit 4 on the side of the second power supply line 2 is in closed state. At this time, the magnetic unit 4 on the side of the first power supply line 1 uses its own magnetic attraction force to make the movable conductive block 3 and the two socket interfaces 8 on the corresponding side in a close contact state. At this time, the first power supply line 1 is in a closed conductive state through the movable conductive block 3. Since the movable conductive block 3 is located on the side of the first power supply line 1, the second power supply line 2 is in an open and power-off state at this time. When the load of the power grid system connected to the first power supply line 1 is abnormal and needs to be switched to the power grid system chained by the second power supply line 2, the magnetic unit 4 on the first power supply line 1 side is turned off by the control system 6 connected to the battery 7, and the magnetic unit 4 on the second power supply line 2 side is turned on. The magnetic unit 4 on the second power supply line 2 side will generate a magnetic force, thereby driving the movable conductive block 3 to move quickly along the insulating guide rod 9 to the second power supply line 2 side. When the movable conductive block 3 is in close contact with the two socket interfaces 8 on the second power supply line 2 side, the movable conductive block 3 can make the second power supply line 2 in a closed state, and the switching of different power grid systems is completed. Compared with the prior art, when switching different power grids, it is only necessary to turn on the magnetic units 4 on different sides. The operation process is simple and convenient, and the switching efficiency is significantly higher, which can further improve the safety of new energy vehicles when used.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A new energy vehicle grid load switching device, characterized in that: It comprises a first power supply line (1) and a second power supply line (2); The first power supply line (1) comprises an electric energy output line (101) and an electric energy input line (102), wherein the electric energy output line (101) and the electric energy input line (102) are arranged in sequence along a vertical direction and a gap is provided between their mutually adjacent ends; The first power supply line (1) and the second power supply line (2) have the same structure, and a movable conductive block (3) is provided between the two, and the movable conductive block (3) can move freely between the first power supply line (1) and the second power supply line (2); A magnetic attraction unit (4) is provided on the mutually distant sides of the middle position of the first power supply line (1) and the second power supply line (2); the magnetic attraction unit (4) can attract the movable conductive block (3) to move toward the first power supply line (1) or the second power supply line (2) on the adjacent side, thereby connecting the mutually adjacent ends of the power output line (101) and the power input line (102) on the corresponding side.

2. The new energy vehicle grid load switching device according to claim 1 is characterized in that: A protective shell (5) is provided on the outer side of the middle position of the first power supply line (1) and the second power supply line (2); the power output line (101) and the power input line (102) on the same side are fixedly connected to the protective shell (5); and the two magnetic attraction units (4) are also installed on the inner wall of the protective shell (5).

3. The new energy vehicle grid load switching device according to claim 1 is characterized in that: The movable conductive block (3) consists of two parts: a metal iron core and a metal copper shell.

4. The new energy vehicle grid load switching device according to claim 2 is characterized in that: The magnetic attraction unit (4) is an electromagnet, and the two magnetic attraction units (4) are electrically connected to a battery (7) via a same control system (6), and the battery (7) is installed in the protective shell (5).

5. The new energy vehicle grid load switching device according to claim 2 or 4, characterized in that: The mutually adjacent ends of the power output line (101) and the power input line (102) on the same side are each provided with a conductive socket interface (8), and a side of the socket interface (8) close to the center of the protective shell (5) is provided with an opening, and the shape of the opening matches the shape of the movable conductive block (3).

6. The new energy vehicle grid load switching device according to claim 5 is characterized in that: An insulating guide rod (9) is respectively provided through the upper and lower ends of the movable conductive block (3), and the two insulating guide rods (9) are both slidably connected to the movable conductive block (3); The two ends of the upper insulating guide rod (9) are respectively fixedly connected to the socket interfaces (8) on the two power output lines (101), and the two ends of the lower insulating guide rod (9) are respectively fixedly connected to the socket interfaces (8) on the two power input lines (102).

7. The new energy vehicle grid load switching device according to claim 6 is characterized in that: The movable conductive block (3) is provided with a rubber insulating pad embedded on one opposite side along the axial direction of the insulating guide rod (9).

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