Novel cc resistor switching circuit

Abstract

The utility model provides a novel cc resistance switching circuit which comprises a charging and discharging integrated gun body inserted in a charging port of a new energy automobile and an OBC module installed in the new energy automobile, and the charging and discharging integrated gun body is electrically connected with the OBC module through the charging port. The charging and discharging integrated gun main body can provide electric energy for the OBC module or the OBC module provides electric energy for the charging and discharging integrated gun main body, and the charging and discharging integrated gun is characterized in that the charging and discharging integrated gun main body is also electrically connected with a charging and discharging automatic switching module. According to the utility model, the CC end resistance value of the charging and discharging integrated gun main body can be automatically controlled through the charging and discharging automatic switching module, so that the OBC module automatically enters a charging state or a discharging state, the effect of automatically switching the charging and discharging states is realized, an operator does not have the risk of electric shock even if a relay has an adhesion fault, and the working efficiency is improved. Therefore, the use safety of the charging and discharging integrated gun can be effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of new energy vehicle charging and discharging, and particularly relates to a novel CC resistor switching circuit. Background Technique

[0002] The integrated charging and discharging gun for new energy vehicles is an important part of new energy vehicles. It is a charging device connecting the power supply and new energy vehicles, responsible for transmitting electric power from the power supply to the vehicle's battery. It can also be connected to a dedicated discharge socket for discharging, as shown in the attached Figure 1 figure. The figure shows a commonly used mode II integrated charging and discharging gun. When in use, it needs to change the CC terminal resistance value to determine the charging and discharging states. Taking a 16A / 3.3kW charging and discharging gun as an example, its discharge resistance is 2kΩ and its charging resistance is 680Ω. When using different functions of the charging gun, it is necessary to switch different CC terminal resistance values to achieve the charging and discharging functions. The existing mode II integrated charging and discharging guns still have the following problems in the actual use process. For example, the CC terminal resistance value needs to be manually adjusted. Especially in the discharge state, if the relay sticks after closing and the CC terminal resistance value fails to be adjusted to the charging state in time, at this time, the plug will be energized. If a person accidentally touches the metal terminal of the plug, an electric shock risk will occur, and the use safety is relatively low. Content of the Utility Model

[0003] In order to solve the above existing technical problems, the utility model provides a novel CC resistor switching circuit, which can achieve the effect of automatically switching the charging and discharging states. Even if the relay sticks, the operator will not have the risk of electric shock, thus effectively improving the use safety of the integrated charging and discharging gun.

[0004] Its technical solution is as follows: A novel CC resistor switching circuit includes an integrated charging and discharging gun body plugged into the charging port of a new energy vehicle and an OBC module installed in the new energy vehicle. The integrated charging and discharging gun body is electrically connected to the OBC module through the charging port, so that the integrated charging and discharging gun body can provide electric energy for the OBC module or the OBC module can provide electric energy for the integrated charging and discharging gun body. Its characteristic lies in that an automatic charging and discharging switching module is also electrically connected to the integrated charging and discharging gun body. Through the automatic charging and discharging switching module, the CC terminal resistance value of the integrated charging and discharging gun body can be automatically controlled, so that the OBC module automatically enters the charging state or the discharging state.

[0005] Compared with the prior art, the beneficial effect of the utility model is:

[0006] The utility model can automatically control the resistance value of the CC terminal of the charging and discharging integrated gun body through the charging and discharging automatic switching module, so that the OBC module automatically enters the charging state or the discharging state, realizing the effect of automatically switching the charging and discharging states. Even if the relay has an adhesion failure, the operator will not have the risk of electric shock, thus effectively improving the use safety of the charging and discharging integrated gun. Description of the Drawings

[0007] Figure 1 is a schematic structural diagram of the prior art.

[0008] Figure 2 is a schematic structural diagram of the utility model.

[0009] Figure 3 is a schematic structural diagram of the charging and discharging automatic switching module of the utility model in the charging state.

[0010] Figure 4 is a schematic structural diagram of the charging and discharging automatic switching module of the utility model in the discharging state.

[0011] In the figure:

[0012] 1. Charging and discharging integrated gun body; 2. OBC module; 3. Relay; 4. First resistor; 5. Second resistor; 6. Charging and discharging automatic switching module; 61. Charging socket; 62. Power plug; 63. Microswitch; 64. Discharging socket; 65. Touching rod. Detailed Embodiment

[0013] The following specifically describes the utility model with reference to the drawings. As shown in the attached drawings, a new type of cc resistor switching circuit includes a charging and discharging integrated gun body 1 plugged into the charging port of a new energy vehicle and an OBC module 2 installed in the new energy vehicle. The charging and discharging integrated gun body 1 is electrically connected to the OBC module 2 through the charging port, so that the charging and discharging integrated gun body 1 can provide electrical energy for the OBC module 2 or the OBC module 2 can provide electrical energy for the charging and discharging integrated gun body 1. Figure 2 Among them, a new type of cc resistor switching circuit further includes a charging and discharging automatic switching module 6, and the charging and discharging automatic switching module 6 is electrically connected to the charging and discharging integrated gun body 1; through the charging and discharging automatic switching module 6, the resistance value of the CC terminal of the charging and discharging integrated gun body 1 can be automatically controlled, so that the OBC module 2 automatically enters the charging state or the discharging state, which is beneficial to realizing the effect of automatically switching the charging and discharging states. Even if the relay has an adhesion failure, the operator will not have the risk of electric shock, thus effectively improving the use safety of the charging and discharging integrated gun.

[0014] Among them, a new type of cc resistor switching circuit further includes a charging and discharging automatic switching module 6, and the charging and discharging automatic switching module 6 is electrically connected to the charging and discharging integrated gun body 1; through the charging and discharging automatic switching module 6, the resistance value of the CC terminal of the charging and discharging integrated gun body 1 can be automatically controlled, so that the OBC module 2 automatically enters the charging state or the discharging state, which is beneficial to realizing the effect of automatically switching the charging and discharging states. Even if the relay has an adhesion failure, the operator will not have the risk of electric shock, thus effectively improving the use safety of the charging and discharging integrated gun.

[0015] Combined with the attached drawings Figure 3 and the attached drawings Figure 4As shown, the automatic charge and discharge switching module 6 includes a charging socket 61, a power plug 62, and a discharge socket 64. A micro switch 63 is provided inside the power plug 62. One end of the micro switch 63 is electrically connected to the charge and discharge integrated gun body 1, and the other end is grounded. When the micro switch 63 is closed, the resistance value output by the CC terminal of the charge and discharge integrated gun body 1 will cause the OBC module 2 to enter the charging state; when the micro switch 63 is opened, the resistance value output by the CC terminal of the charge and discharge integrated gun body 1 will cause the OBC module 2 to enter the discharging state;

[0016] When the power plug 62 is plugged into the charging socket 61, the micro switch 63 is in the closed state, and the charge and discharge integrated gun body 1 provides electrical energy to the OBC module 2 through the charging port;

[0017] A trigger rod 65 is integrally connected to the discharge socket 64. When the power plug 62 is plugged into the discharge socket 64, the trigger rod 65 will slide through the inside of the power plug 62 and trigger the micro switch 63, and the micro switch 63 will open. The resistance value output by the CC terminal of the charge and discharge integrated gun body 1 will cause the OBC module 2 to enter the discharging state; when the discharge socket 64 is separated from the power plug 62, the trigger rod 65 moves away from the micro switch 63, causing the micro switch 63 to close, and the OBC module 2 enters the charging state, and the power plug 62 loses electrical energy.

[0018] In this embodiment, specifically, one end of the PE phase of the charge and discharge integrated gun body 1 is electrically connected to the PE terminal of the OBC module 2 through the charging port, and the other end is electrically connected to the PE terminal of the power plug 62 through a wire; a relay 3 is provided inside the charge and discharge integrated gun body 1, and the L terminal and N terminal on one side of the relay 3 are electrically connected to the L terminal and N terminal of the OBC module 2 through the charging port respectively, and the L terminal and N terminal on the other side are electrically connected to the L terminal and N terminal of the power plug 62 through wires respectively. The control terminal of the relay 3 is also electrically connected to the OBC module 2 through the charging port; a first resistor 4 is also provided in the charge and discharge integrated gun body 1, and one end of the first resistor 4 is electrically connected to the CC terminal of the OBC module 2 through the charging port, and the other end is electrically connected to the end of the micro switch 63 away from the ground wire; one end of a second resistor 5 is also electrically connected between the first resistor 4 and the CC terminal of the OBC module 2, and the second resistor 5 is provided inside the charge and discharge integrated gun body 1, and the other end of the second resistor 5 is grounded.

[0019] In this embodiment, specifically, the resistance value of the first resistor 4 is 1 kΩ; the resistance value of the second resistor 5 is 2 kΩ; when the micro switch 63 is closed, the first resistor 4 and the second resistor 5 are arranged in parallel. At this time, the resistance value output by the CC terminal of the integrated charging and discharging gun body 1 is Rcc = Rc1 / / Rc2 = 660 Ω; when the micro switch 63 is opened, the resistance value output by the CC terminal of the integrated charging and discharging gun body 1 is 2 kΩ.

[0020] In this embodiment, specifically, the resistance values of the first resistor 4 and the second resistor 5 can also be selected with different calibration values according to different charging and discharging guns.

[0021] In this embodiment, during charging, the operator can directly plug the power plug 62 into the charging socket 61. At this time, the micro switch 63 is in the closed state, and the resistance value output by the CC terminal of the integrated charging and discharging gun body 1 is 660 Ω. When the OBC module 2 detects a specific resistance value, it will enter the charging state and automatically control the relay 3 to close, so that electric energy is input into the OBC module 2.

[0022] In this embodiment, during discharging, the operator can directly plug the power plug 62 into the discharging socket 64. Since the trigger rod 65 on the discharging socket 64 can trigger the micro switch 63 to open, the resistance value output by the CC terminal of the integrated charging and discharging gun body 1 is 2 kΩ. When the OBC module 2 detects a specific resistance value, it will enter the discharging state and automatically control the relay 3 to close, so that the OBC module 2 can provide electric energy for the power plug 62; when the power plug 62 is separated from the discharging socket 64 and the relay 3 has an adhesion fault, since the micro switch 63 is separated from the trigger rod 65, the micro switch 63 will automatically close, and the OBC module 2 will automatically switch to the charging state. At this time, the power plug 62 will lose electric energy. That is to say, when the power plug 62 is separated from the discharging socket 64, the OBC module 2 is always in the charging state. Thus, even if the relay has an adhesion fault, the operator will not have the risk of electric shock, and the use safety of the integrated charging and discharging gun can be effectively improved, achieving the effect of automatically switching the charging and discharging states.

[0023] Using the technical solution of the present invention, or a person skilled in the art inspired by the technical solution of the present invention to design a similar technical solution and achieving the above technical effects shall fall within the protection scope of the present invention.

Claims

1. A novel CC resistance switching circuit, comprising a charging and discharging integrated gun body (1) plugged into a charging port of a new energy vehicle and an OBC module (2) installed in the new energy vehicle. The charging and discharging integrated gun body (1) is electrically connected to the OBC module (2) through the charging port, so that the charging and discharging integrated gun body (1) can provide electrical energy for the OBC module (2) or the OBC module (2) can provide electrical energy for the charging and discharging integrated gun body (1). It is characterized in that, The charging and discharging integrated gun body (1) is also electrically connected to a charging and discharging automatic switching module (6). Through the charging and discharging automatic switching module (6), the resistance value of the CC terminal of the charging and discharging integrated gun body (1) can be automatically controlled, so that the OBC module (2) automatically enters the charging state or the discharging state.

2. The novel cc resistance switching circuit according to claim 1, wherein The charging and discharging automatic switching module (6) includes a charging socket (61), a power plug (62) and a discharging socket (64). A micro switch (63) is arranged inside the power plug (62). One end of the micro switch (63) is electrically connected to the charging and discharging integrated gun body (1), and the other end is grounded. When the micro switch (63) is closed, the resistance value output by the CC terminal of the charging and discharging integrated gun body (1) will cause the OBC module (2) to enter the charging state; when the micro switch (63) is disconnected, the resistance value output by the CC terminal of the charging and discharging integrated gun body (1) will cause the OBC module (2) to enter the discharging state.

3. The novel cc resistance switching circuit according to claim 2, characterized in that, When the power plug (62) is inserted into the charging socket (61), the micro switch (63) is in the closed state, and the charging and discharging integrated gun body (1) provides electric energy for the OBC module (2) through the charging port.

4. The novel CC resistance switching circuit according to claim 3, wherein A trigger rod (65) is integrally connected to the discharging socket (64). When the power plug (62) is inserted into the discharging socket (64), the trigger rod (65) will slide through the inside of the power plug (62) and trigger the micro switch (63), and the micro switch (63) will be disconnected. The resistance value output by the CC terminal of the charging and discharging integrated gun body (1) will cause the OBC module (2) to enter the discharging state; when the discharging socket (64) is separated from the power plug (62), the trigger rod (65) moves away from the micro switch (63), causing the micro switch (63) to close, and the OBC module (2) enters the charging state, and the power plug (62) loses electric energy.

5. The novel cc resistance switching circuit according to claim 4, characterized in that, One end of the PE phase of the charging and discharging integrated gun body (1) is electrically connected to the PE end of the OBC module (2) through the charging port, and the other end is electrically connected to the PE end of the power plug (62) through a wire; a relay (3) is arranged inside the charging and discharging integrated gun body (1). The L terminal and the N terminal on one side of the relay (3) are respectively electrically connected to the L terminal and the N terminal of the OBC module (2) through the charging port, and the L terminal and the N terminal on the other side are respectively electrically connected to the L terminal and the N terminal of the power plug (62) through wires. The control terminal of the relay (3) is also electrically connected to the OBC module (2) through the charging port; a first resistor (4) is also arranged in the charging and discharging integrated gun body (1). One end of the first resistor (4) is electrically connected to the CC terminal of the OBC module (2) through the charging port, and the other end is electrically connected to the end of the micro switch (63) away from the ground wire; one end of a second resistor (5) is also electrically connected between the first resistor (4) and the CC terminal of the OBC module (2), and the second resistor (5) is arranged inside the charging and discharging integrated gun body (1), and the other end of the second resistor (5) is grounded.

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