Multipath double-open anti-electric shock protection device based on charging and discharging of electric vehicle

Abstract

The utility model discloses a multipath double-open anti-electric shock protection device based on electric vehicle charging and discharging, and relates to the technical field of electric vehicles, the multipath double-open anti-electric shock protection device based on electric vehicle charging and discharging comprises a control box, the control box is provided with a protection mechanism for protecting the control box, and the protection mechanism is provided with an electric shock protection mechanism for protecting the control box. The protection mechanism comprises a plug, a socket, a gun head and a three-pole double-throw switch, the three-pole double-throw switch is located between the control box and the gun head, the three-pole double-throw switch and the control box are connected through an L-OUT line and an N-OUT line, and the plug and the control box are connected through an L line and an N line. By arranging the discharge selection resistor, the charging speed of the battery or the capacitor can be controlled, too fast or too slow charging can be avoided, the service life of the battery or the capacitor can be prolonged, and the battery or the capacitor can be prevented from being overcharged by selecting a proper resistance value through the proper discharge selection resistor.

Description

Technical Field

[0001] The utility model relates to the technical field of electric vehicles, in particular to a multi-channel double-opening electric shock protection device based on charging and discharging of electric vehicles. Background Art

[0002] As new energy vehicles become more and more popular, there are a large number of cars on the market with discharge functions. Currently, the cable control protection device (IC-CPD) and the discharge device on the market are two separate products. Either the gun head is connected to the control box through wiring coupling for charging, or connected to the power strip for discharge. There are also so-called two-in-one devices made by various manufacturers on the market.

[0003] However, during the implementation of the above technical solution, it was found that there were at least the following technical problems:

[0004] 1. Traditional devices are mostly two separate charging and discharging products, which are costly and inconvenient for users to carry.

[0005] 2. The existing gun head cable is a coupled type, which has high production cost and is inconvenient for users to operate.

[0006] 3. The existing two-in-one product design is defective. If the relay sticks uncontrollably, it may cause the user to come into contact with high voltage electricity, posing a risk of electric shock. Utility Model Content

[0007] 1. Technical issues to be resolved

[0008] In view of the shortcomings of the prior art, the utility model provides a multi-channel double-opening anti-electric shock protection device based on charging and discharging of electric vehicles, which solves the technical problems that traditional devices mostly have two separate charging and discharging products, are costly and inconvenient for users to carry, and the existing two-in-one products have design defects, and the relay may stick uncontrollably, which may cause the user to touch high voltage electricity and cause the risk of electric shock.

[0009] (II) Technical solution

[0010] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0011] A multi-channel double-opening electric shock protection device for charging and discharging an electric vehicle comprises a control box, wherein the control box is provided with a protection mechanism for protecting the control box, wherein the protection mechanism comprises a plug, a socket, a gun head and a three-pole double-throw switch, wherein the three-pole double-throw switch is located between the control box and the gun head, wherein the three-pole double-throw switch and the control box are connected via an L-OUT line and an N-OUT line, wherein the plug and the control box are connected via an L line and an N line, wherein the control box and the plug are also connected via a PE line, wherein the gun head and the three-pole double-throw switch are connected via an L line and an N line, wherein the gun head and the three-pole double-throw switch are also connected via a CC line, wherein the socket and the three-pole double-throw switch are connected via an L line and an N line, wherein the socket and the three-pole double-throw switch are also connected via a PE line, and wherein the control box and the gun head are connected via a PE line.

[0012] Preferably, the control box and the gun head are also connected via a CP line.

[0013] Preferably, a discharge selection resistor is provided on the three-pole double-throw switch, and a charge selection resistor is also provided on the three-pole double-throw switch.

[0014] (III) Beneficial effects

[0015] 1. The utility model uses a three-pole double-throw switch to select charging and discharging. The user turns the switch on the three-pole double-throw switch to the connection socket. At this time, the socket is energized and connected to the car through the gun head to realize the discharge function, and eliminates the possibility of discharging in series with the control box at the car end. By turning the switch on the three-pole double-throw switch to one end connected to the control box, connecting the plug to the mains, and connecting the car through the gun head, the function of charging the car can be realized, and eliminates the possibility of connecting the mains in series with the socket, thereby playing a safe and controllable role.

[0016] 2. The utility model can realize fast switching and selection of signals by setting a charging selection resistor on the three-pole double-throw switch, and can release the residual electricity in the circuit during the switching process by setting a resistor on the three-pole double-throw switch. By setting a discharge selection resistor on the three-pole double-throw switch, the charging speed of the battery or capacitor can be controlled to avoid charging too fast or too slow, thereby helping to extend the life of the battery or capacitor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above description is only an overview of the technical solution of the utility model. In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the utility model in conjunction with the accompanying drawings.

[0018] Figure 1 It is a schematic diagram of the overall structure of the control box of the present invention;

[0019] Figure 2 It is a schematic diagram of the overall structure of the three-pole double-throw switch of the present invention;

[0020] Figure 3 It is a schematic diagram of the circuit structure of the present invention.

[0021] Legend: 1. Control box; 11. Plug; 12. Socket; 13. Gun head; 14. Three-pole double-throw switch; 15. Discharge selection resistor; 16. Charge selection resistor. DETAILED DESCRIPTION

[0022] The embodiment of the present application provides a multi-channel double-opening anti-electric shock protection device based on charging and discharging of electric vehicles, which effectively solves the technical problems that most traditional devices are separated into two products, charging and discharging, which are costly and inconvenient for users to carry, and the existing two-in-one products have design defects, and the relay may stick and be uncontrolled, which may cause the user to touch high voltage electricity and cause the risk of electric shock. The charging and discharging selection is performed through a three-pole double-throw switch. The user turns the switch on the three-pole double-throw switch to the connection socket. At this time, the socket is energized and the car is connected to the gun head to realize the discharge function, and the possibility of discharge from the car end in series to the control box is eliminated. By turning the switch on the three-pole double-throw switch to one end connected to the control box, connecting the plug to the mains, and connecting the car to the gun head, the function of charging the car can be realized, and the possibility of mains power being connected to the socket in series is eliminated.

[0023] Example

[0024] like Figure 1 , Figure 2 and Figure 3As described, the technical solution in the embodiment of the present application is effective. Traditional devices are mostly two separate charging and discharging products, which are costly and inconvenient for users to carry. In addition, the existing two-in-one product design is defective. If the relay is stuck and uncontrolled, it may cause the user to touch the high voltage electricity, which may cause the risk of electric shock. The overall idea is as follows: a multi-channel double-opening anti-electric shock protection device based on electric vehicle charging and discharging, including a control box 1, a protective mechanism for protecting the control box 1 is provided on the control box 1, and the protective mechanism includes a plug 11, a socket 12, a gun head 13 and a three-pole double-throw switch 14. The three-pole double-throw switch 14 is located between the control box 1 and the gun head 13. The double-throw switch 14 is connected to the control box 1 through the L-OUT line and the N-OUT line, the plug 11 is connected to the control box 1 through the L line and the N line, the control box 1 and the plug 11 are also connected through the PE line, the gun head 13 is connected to the three-pole double-throw switch 14 through the L line and the N line, and the gun head 13 is also connected to the three-pole double-throw switch 14 through the CC line. The user turns the switch on the three-pole double-throw switch 14 to the end connected to the control box 1, connects the plug 11 to the mains, and connects the gun head 13 to the car, so that the car can be charged, and the possibility of the mains being connected in series to the socket 12 is eliminated, thereby playing a safe and controllable role;

[0025] The socket 12 and the three-pole double-throw switch 14 are connected through the L line and the N line, and the socket 12 and the three-pole double-throw switch 14 are also connected through the PE line. The three-pole double-throw switch 14 is used to select charging and discharging. The user turns the switch on the three-pole double-throw switch 14 to the socket 12. At this time, the socket 12 is powered on and connected to the car through the gun head 13, so that the discharge function can be realized, and the possibility of the car end discharging in series to the control box 1 is eliminated;

[0026] The control box 1 and the gun head 13 are connected by a PE line, and the control box 1 and the gun head 13 are also connected by a CP line. A discharge selection resistor 15 is provided on the three-pole double-throw switch 14. The discharge selection resistor 15 is provided on the three-pole double-throw switch 14. By setting the discharge selection resistor 15, the charging speed of the battery or capacitor can be controlled to avoid charging too fast or too slow, thereby helping to extend the life of the battery or capacitor. Properly selecting a suitable resistance value for the discharge selection resistor 15 can prevent the battery or capacitor from being overcharged, thereby avoiding damage to the equipment or safety hazards;

[0027] The three-pole double-throw switch 14 is also provided with a charging selection resistor 16. The charging selection resistor 16 is provided on the three-pole double-throw switch 14, which can realize fast switching and selection of signals. By setting a resistor on the three-pole double-throw switch 14, the residual electricity in the circuit can be released during the switching process, ensuring that the circuit components will not be damaged due to residual charge.

[0028] In view of the problems existing in the prior art, the utility model provides a multi-channel double-opening anti-electric shock protection device based on charging and discharging of electric vehicles. Charging and discharging are selected through a three-pole double-throw switch. The user can change the switch connection on the three-pole double-throw switch to change the power-on function and line, and eliminate the possibility of mains series connection.

[0029] Working principle:

[0030] As attached Figure 3 As shown, the charging and discharging selection is performed through the three-pole double-throw switch 14. The user turns the switch on the three-pole double-throw switch 14 to the connection socket 12. At this time, the socket 12 is energized, and the car is connected through the gun head 13 to realize the discharge function, and the possibility of the car end discharging in series to the control box 1 is eliminated. The user turns the switch on the three-pole double-throw switch 14 to one end of the connection control box 1, and after connecting the plug 11 to the mains, the car is connected through the gun head 13 to realize the function of charging the car, and the possibility of the mains being connected in series to the socket 12 is eliminated, thereby playing a safe and controllable role. A charging selection resistor 16 is set on the three-pole double-throw switch 14 to realize fast switching and selection of signals. By setting a resistor on the three-pole double-throw switch 14, the residual electricity in the circuit can be released during the switching process to ensure that the circuit components will not be The three-pole double-throw switch 14 is provided with a discharge selection resistor 15. By setting the discharge selection resistor 15, the charging speed of the battery or capacitor can be controlled to avoid charging too fast or too slow, thereby helping to extend the life of the battery or capacitor. Proper selection of the discharge selection resistor 15 for the appropriate resistance value can prevent overcharging of the battery or capacitor, avoid damage to the equipment or potential safety hazards, and the discharge selection resistor 15 can optimize the charging efficiency, increase the charging speed, and shorten the charging time.

[0031] Finally, it should be noted that: Obviously, the above embodiments are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from this are still within the scope of protection of the present invention.

Claims

1. A multi-channel double-opening anti-electric shock protection device for charging and discharging electric vehicles, comprising, characterized in that: A control box (1), characterized in that: the control box (1) is provided with a protection mechanism for protecting the control box (1); The protection mechanism comprises a plug (11), a socket (12), a gun head (13) and a three-pole double-throw switch (14); the three-pole double-throw switch (14) is located between the control box (1) and the gun head (13); the three-pole double-throw switch (14) and the control box (1) are connected via an L-OUT line and an N-OUT line; The plug (11) and the control box (1) are connected via an L line and an N line, the control box (1) and the plug (11) are also connected via a PE line, and the gun head (13) and the three-pole double-throw switch (14) are connected via an L line and an N line.

2. A multi-channel double-opening anti-electric shock protection device for charging and discharging electric vehicles as claimed in claim 1, characterized in that: The gun head (13) and the three-pole double-throw switch (14) are also connected via a CC line.

3. A multi-channel double-opening anti-electric shock protection device for charging and discharging electric vehicles as claimed in claim 2, characterized in that: The socket (12) and the three-pole double-throw switch (14) are connected via an L line and an N line.

4. A multi-channel double-opening electric shock protection device for charging and discharging electric vehicles as claimed in claim 3, characterized in that: The socket (12) and the three-pole double-throw switch (14) are also connected via a PE line.

5. A multi-channel double-opening electric shock protection device for charging and discharging electric vehicles as claimed in claim 4, characterized in that: The control box (1) and the gun head (13) are connected via a PE line.

6. A multi-channel double-opening electric shock protection device for charging and discharging electric vehicles as claimed in claim 5, characterized in that: The control box (1) and the gun head (13) are also connected via a CP line; The three-pole double-throw switch (14) is provided with a discharge selection resistor (15), and the three-pole double-throw switch (14) is also provided with a charge selection resistor (16).

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