Direct-current charging pile for charging electric vehicle in appointment mode from pile end

Abstract

The utility model belongs to the technical field of charging piles, and discloses a direct-current charging pile for charging an electric automobile in an appointment mode from a pile end, the direct-current charging pile comprises a machine body, one end of the machine body is connected with commercial power, the other end of the machine body is connected with a charging gun, the charging gun is used for being connected with the electric automobile, and a plug of the charging gun is provided with nine ports. A controller is arranged in a machine body of the direct current charging pile, a CC1 port of a charging gun is connected with an internal circuit of the machine body through a switch S1, a CC2 port of the charging gun is connected with the internal circuit of the machine body through a switch S2, an A + port of the charging gun is connected with the internal circuit of the machine body through a switch K3, and an A-port of the charging gun is connected with the internal circuit of the machine body through a switch K4. And the controller is connected with the switch S1, the switch S2, the switch K3 and the switch K4 and controls the on-off of the switches. The beneficial effects of the utility model are that the reservation charging function is actively realized from the pile end without the cooperation of a vehicle enterprise, the flow and logic meet the national standard requirements, and the dormancy and other states of the vehicle are not influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of charging piles, in particular to a DC charging pile for charging electric vehicles at a pile end. Background Art

[0002] In recent years, China's new energy vehicles have developed rapidly, resulting in an increasing number of electric vehicles. Disorderly charging has had an increasing impact on the power grid, and the gap between peak and valley power consumption has widened further, increasing the burden on the power grid. The state encourages users to use electricity at off-peak times and reduce the pressure on the power grid by adjusting the peak and valley electricity prices. However, the DC charging piles currently on the market only support charging within a certain period of time after the gun is plugged in. Otherwise, the BMS will be dormant and charging cannot be started, resulting in users being unable to respond to the state's call for valley power consumption, and users are unable to enjoy the preferential valley electricity prices.

[0003] At present, in the field of DC charging piles, if you want to make an appointment for charging, you can only start charging by cooperating with the car companies to smuggle agreements. However, this model is difficult to operate and requires changes from both the pile companies and the car companies. It also limits the user's choice of charging, indirectly kidnapping the user's right to choose. If you do not make an appointment for charging and want to support the national call and enjoy the preferential electricity prices during the trough period, the user needs to plug in the gun and start charging after reaching the trough electricity consumption period. Most of the trough electricity consumption is in the early morning. Requiring users to charge the electric gun at this time is contrary to the work and rest habits of most people, which brings a negative charging experience to users. In view of this situation, the market needs a simple, national-standard household DC charging pile that can realize the appointment charging function from the pile end.

[0004] Therefore, it is necessary to provide a DC charging pile that can schedule charging for electric vehicles from the pile end. It does not require cooperation from car manufacturers and can actively realize the scheduled charging function from the pile end. The process and logic comply with national standards and do not affect the vehicle's sleep and other states. Utility Model Content

[0005] The utility model discloses a DC charging pile for pre-charging electric vehicles from a pile end, relates to the technical field of pre-charging electric vehicles, and can effectively solve the technical problems involved in the background technology.

[0006] To achieve the above purpose, the technical solution of the utility model is:

[0007] A DC charging pile for charging an electric vehicle by appointment from a pile end, the DC charging pile comprises a body, one end of the body is connected to the mains, and the other end is connected to a charging gun, the charging gun is used to connect to the electric vehicle, the plug of the charging gun is provided with nine ports, namely DC+, DC-, PE, S+, S-, CC1, CC2, A+ and A-, the electric vehicle is provided with a charging port corresponding to the plug of the charging gun, a controller is provided inside the body of the DC charging pile, the CC1 port of the charging gun is connected to the internal circuit of the body through a switch S1, the CC2 port of the charging gun is connected to the internal circuit of the body through a switch S2, the A+ port of the charging gun is connected to the internal circuit of the body through a switch K3, the A- port of the charging gun is connected to the internal circuit of the body through a switch K4, the controller is connected to the switches S1, S2, K3 and K4 and controls the on and off of the switches, a wireless communication component is provided inside the body, the wireless communication component is connected to the controller, a display screen is provided on the body, the display screen is connected to the controller, and the controller is connected to a timing component.

[0008] Specifically, a function of making an appointment to start charging an electric vehicle at a scheduled time from the charging pile end is disclosed, and its components include a national standard DC charging gun, a DC charging pile end controller, a DC charging pile software logic, and human-computer interaction. After the charging pile is normally connected to the electric vehicle in the standby mode of the charging pile, the user can start the appointment mode through Bluetooth / APP / physical button and other methods. After starting, no other user operations are required. When the charging pile reaches the agreed time, it will actively wake up the vehicle BMS and establish a connection, and then charge according to the vehicle's needs. It meets the user's needs for various charging scenarios and responds to the country's call for staggered electricity demand. It can also encourage users to use electricity during off-peak hours to save charging costs and reduce the cost of green travel, while not affecting the normal sleep function of the vehicle's BMS.

[0009] In general, the control of the CC2 detection resistor in the charging gun head is handed over to the charging pile controller, and a switch that can control the on and off of CC1 and CC2 is added inside the controller. By disconnecting the CC1 signal detected by the charging pile plug-in and the CC2 signal detected by the vehicle plug-in and the A+A- (BMS power supply) switch of the controller itself, the user plug-in action is simulated, and the vehicle BMS system is awakened to establish a normal communication connection with the electric vehicle to achieve successful charging. The connection line of CC2 to PE in the charging gun head is connected to the controller, and a CC2 to PE on-off switch is added to the controller end. The charging pile end controller includes a switch that can control the on and off of A+A- and CC1, and this switch can be controlled by the pile end controller. The charging pile can set the scheduled charging start time and cancel the scheduled charging through channels such as Bluetooth / APP / physical buttons. The signal detection and judgment conditions and timing of the charging pile meet GBT 27930-2015, and there is no need to customize private protocols, which does not affect the normal sleep of vehicles and charging piles.

[0010] As a preferred improvement of the present utility model: an AC / DC circuit is provided inside the fuselage. The mains power is connected to the AC / DC circuit through a switch. The AC / DC circuit is connected to a DC / DC circuit. One end of the DC / DC circuit is connected to the positive terminal of diode D1, and the negative terminal of the diode is connected to one end of the output fuse. A circuit sampling component is connected between the negative terminal of the diode and one end of the output fuse. The other end of the output fuse is connected to the DC+ of the charging gun port through switch K1, and the other end of the DC / DC circuit is connected to the DC- of the charging gun port through switch K2. The controller is connected to switches K1 and K2 and controls their on / off states.

[0011] As a preferred improvement of the present utility model: a 12V auxiliary power circuit is provided inside the fuselage. The mains power is connected to the 12V auxiliary power circuit. The 12V auxiliary power circuit is connected to port A+ through switch K3, and the 12V auxiliary power circuit is connected to port A- through switch K4. The controller is connected to switches K3 and K4 and controls their on / off states.

[0012] As a preferred improvement of the present utility model: a voice broadcast component is provided on the fuselage, and the voice broadcast component is connected to the controller.

[0013] As a preferred improvement of the present utility model: switch S1 is relay PLY1.

[0014] As a preferred improvement of the present utility model: the controller is connected to port CC1-S0. One end of port CC1-S0 is connected to one end of resistor R35. The other end of resistor R35 is connected to one end of resistor R36, one end of capacitor C18, and the base of triode Q1. The other end of resistor R36, the other end of capacitor C18, and the emitter of triode Q1 are connected to port DGND. The collector of triode Q1 is connected to pins 2 and 3 of diode D15, and pin 1 of relay PLY1. Pin 1 of diode D15 is connected to pin 2 of relay PLY1 and port 5V. Port CC1 is connected to pin 4 of relay PLY1. Pin 3 of relay PLY1 is connected to the internal circuit of the fuselage.

[0015] As a preferred improvement of the present utility model: switch S2 is relay PLY2.

[0016] As a preferred improvement of the present utility model: The controller is connected to port CC2-S0. One end of port CC2-S0 is connected to one end of resistor R89. The other end of resistor R89 is connected to one end of resistor R90, one end of capacitor C64, and the base of triode Q2. The other end of resistor R90, the other end of capacitor C64, and the emitter of triode Q2 are connected to port DGND. The collector of triode Q2 is connected to pin 2 and pin 3 of diode D61, and pin 1 of relay PLY2. Pin 1 of diode D61 is connected to pin 2 of relay PLY2 and port 5V. Port CC2 is connected to pin 4 of relay PLY2. Pin 3 of relay PLY2 is connected to the body ground terminal.

[0017] As a preferred improvement of the present utility model: The body is provided with an RFID component, and the RFID component is connected to the controller.

[0018] As a preferred improvement of the present utility model: The body is provided with a camera and a lighting component. The camera and the lighting component are connected to the controller, and the controller is connected to a face recognition component.

[0019] The beneficial effects of the present utility model are as follows:

[0020] Without the need for the cooperation of automobile enterprises, the reservation charging function is actively realized from the pile end, and the process and logic meet the national standards requirements, without affecting the vehicle's sleep and other states. There is no need for the user to go downstairs repeatedly to insert the gun to start charging. After the user parks the car, inserts the gun, and sets the reservation start time, they can leave. When the appointed time arrives, the charging pile can automatically start. The user can independently adjust the reservation charging time to meet the needs of various charging scenarios of the user. Compared with ordinary charging piles that do not support the reservation charging function, the equipment cost of the charging pile with the added reservation charging function does not increase significantly, and the economic benefit is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings, where:

[0022] Figure 1 It is a schematic diagram of a DC charging pile for reserving charging an electric vehicle from the pile end of the present utility model;

[0023] Figure 2 It is a schematic diagram of the wiring principle;

[0024] Figure 3 It is a schematic diagram of the CC1 circuit control;

[0025] Figure 4 It is a schematic diagram for the control of the CC2 circuit;

[0026] Figure 5 It is a schematic diagram of the charging process. Specific embodiments

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.

[0028] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the drawings). If this specific posture changes, the directional indications will also change accordingly.

[0029] In addition, in the present invention, descriptions such as "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0030] In the present invention, unless otherwise clearly defined and limited, terms such as "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0031] In addition, the technical solutions between various embodiments of the present invention can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0032] Please refer to Figure 1 - Figure 2As shown in the figure, the utility model provides a DC charging pile for pre - booking charging of electric vehicles from the pile end. The DC charging pile includes a body. One end of the body is connected to the mains power supply, and the other end is connected to a charging gun. The charging gun is used to connect to an electric vehicle. The plug of the charging gun has nine ports (a common DC nine - hole charging gun), which are DC +, DC -, PE, S +, S -, CC1, CC2, A +, and A - respectively. The electric vehicle is provided with a charging port corresponding to the plug of the charging gun. Inside the body of the DC charging pile, there is a controller. The CC1 port of the charging gun is connected to the internal circuit of the body through a switch S1, the CC2 port of the charging gun is connected to the internal circuit of the body through a switch S2, the A + port of the charging gun is connected to the internal circuit of the body through a switch K3, and the A - port of the charging gun is connected to the internal circuit of the body through a switch K4. The controller is connected to the switch S1, switch S2, switch K3, and switch K4 and controls their on - off. Inside the body, there is a wireless communication component, which is connected to the controller. There is a display screen on the body, and there are buttons on the display screen. Inside the body, there is a button control component, which is connected to the display screen and the controller. The controller is connected to a timing component. Users can connect to the charging pile through the mobile APP to set pre - booking charging. A display screen is set on the body to show the specific situation of pre - booking charging. This kind of display screen has a low cost, and the cost of the device is also reduced accordingly. In order to improve user satisfaction, it can be changed to a touch display screen, or physical buttons can be set on the body. In this way, users can manually set the pre - booking charging function on - site, which is more convenient to use, but the cost is also higher. Users can choose according to the actual situation.

[0033] Specifically, a system implementation plan for the pre - booking charging function of a DC charging pile with small modification amount, simple control, safe and stable, and meeting the requirements of national standard hardware and communication protocols is provided. An electric vehicle pile - end pre - booking charging system is designed, which includes a national standard DC charging gun, a DC charging pile pile - end controller, DC charging pile software logic, and human - machine interaction. The DC charging pile system wakes up the vehicle BMS system by disconnecting the CC1 signal detected by the charging pile when the gun is inserted and the CC2 signal detected by the vehicle when the gun is inserted, and simulating the user's gun - inserting action through the A + A - (BMS power supply) switch that the controller itself has, so as to establish a normal communication connection with the electric vehicle and achieve successful charging. The DC charging pile system can set the pre - booking charging start time and cancel pre - booking charging through channels such as Bluetooth applet / APP / physical buttons. The wireless communication component is connected to the cloud, the cloud is connected to the user's mobile phone, the display screen on the body is used to set the pre - booking charging function on - site, and the timing component is used to control the time.

[0034] As an implementation manner, an AC / DC circuit is provided inside the fuselage. The mains power is connected to the AC / DC circuit through a switch. The AC / DC circuit is connected to a DC / DC circuit. One end of the DC / DC circuit is connected to the positive end of diode D1, and the negative end of the diode is connected to one end of an output fuse. A circuit sampling component is connected between the negative end of the diode and one end of the output fuse. The other end of the output fuse is connected to the charging gun port DC+ through switch K1, and the other end of the DC / DC circuit is connected to the charging gun port DC- through switch K2. The controller is connected to switches K1 and K2 and controls their on / off states.

[0035] As an implementation manner, a 12V auxiliary power circuit is provided inside the fuselage. The mains power is connected to the 12V auxiliary power circuit. The 12V auxiliary power circuit is connected to port A+ through switch K3, and the 12V auxiliary power circuit is connected to port A- through switch K4. The controller is connected to switches K3 and K4 and controls their on / off states. A voice broadcast component is provided on the fuselage. The voice broadcast component is connected to the controller and can voice-remind whether the charging gun is connected, whether the scheduled charging is completed, etc.

[0036] Please refer to Figure 3 As shown, the switch S1 is relay PLY1. The controller is connected to port CC1-S0. One end of resistor R35 is connected to port CC1-S0. The other end of resistor R35 is connected to one end of resistor R36, one end of capacitor C18, and the base of triode Q1. The other end of resistor R36, the other end of capacitor C18, and the emitter of triode Q1 are connected to port DGND. The collector of triode Q1 is connected to pins 2 and 3 of diode D15, and pin 1 of relay PLY1. Pin 1 of diode D15 is connected to pin 2 of relay PLY1 and port 5V. Port CC1 is connected to pin 4 of relay PLY1. Pin 3 of relay PLY1 is connected to the internal circuit of the fuselage. The controller sends an instruction from port CC1-S0, which acts on pins 1 and 2 of relay PLY1, thereby achieving the opening and closing between the contacts of pins 3 and 4 of relay PLY1.

[0037] Please refer to Figure 4As shown, the switch S2 is the relay PLY2. The controller is connected to the port CC2 - S0. One end of the resistor R89 is connected to the port CC2 - S0. The other end of the resistor R89 is connected to one end of the resistor R90, one end of the capacitor C64, and the base of the triode Q2. The other end of the resistor R90, the other end of the capacitor C64, and the emitter of the triode Q2 are connected to the port DGND. The collector of the triode Q2 is connected to pin 2 and pin 3 of the diode D61, and pin 1 of the relay PLY2. Pin 1 of the diode D61 is connected to pin 2 of the relay PLY2 and the port 5V. The port CC2 is connected to pin 4 of the relay PLY2. Pin 3 of the relay PLY2 is connected to the body ground terminal.

[0038] As an implementation, the body is provided with an RFID component, which is connected to the controller. Charging is completed through a card. For remote use, a mobile phone applet or APP is used for setting. The body is provided with a camera and a lighting component. The camera and the lighting component are connected to the controller. The controller is connected to a face recognition component for face recognition, enabling specific users to use the charging pile, making it more convenient to use.

[0039] Please refer to Figure 5 As shown, the user first connects the charging gun, then sets the scheduled charging time, and then can leave. When the scheduled charging time arrives, the controller controls the relay to disconnect the connection between CC1 and CC2. After waiting for 500 ms, the relay connects CC1 and CC2 and outputs A + A - to wake up the vehicle BMS. When the vehicle BMS is awakened, the charging pile sends a handshake message and starts the charging process according to the national standard GBT27930 - 2015 protocol.

[0040] Although the embodiments of the present utility model have been disclosed as above, it is not limited to only the applications listed in the specification and the embodiments. It can be fully applied to various fields suitable for the present utility model. For those familiar with the field, additional modifications can be easily made. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present utility model is not limited to the specific details and the illustrated examples shown and described here.

Claims

1. A DC charging pile for pre - booking charging of electric vehicles from the pile end. The DC charging pile includes a body. One end of the body is connected to the mains power supply, and the other end is connected to a charging gun. The charging gun is used to connect to an electric vehicle. The plug of the charging gun is provided with nine ports, which are DC +, DC -, PE, S +, S -, CC1, CC2, A +, and A - respectively. The electric vehicle is provided with a charging port corresponding to the plug of the charging gun. It is characterized in that: Inside the body of the DC charging pile, there is a controller. The CC1 port of the charging gun is connected to the internal circuit of the body through switch S1, the CC2 port of the charging gun is connected to the internal circuit of the body through switch S2, the A+ port of the charging gun is connected to the internal circuit of the body through switch K3, the A- port of the charging gun is connected to the internal circuit of the body through switch K4. The controller is connected to switch S1, switch S2, switch K3 and switch K4 and controls their on / off. Inside the body, there is a wireless communication component, which is connected to the controller. On the body, there is a display screen, which is connected to the controller. The controller is connected to a timing component.

2. The DC charging pile for pre-reserving charging of an electric vehicle from the pile end according to claim 1, characterized in that: Inside the body, there is an AC / DC circuit. The mains power is connected to the AC / DC circuit through a switch. The AC / DC circuit is connected to the DC / DC circuit. One end of the DC / DC circuit is connected to the positive end of diode D1. The negative end of the diode is connected to one end of the output fuse. A circuit sampling component is connected between the negative end of the diode and one end of the output fuse. The other end of the output fuse is connected to the charging gun port DC+ through switch K1. The other end of the DC / DC circuit is connected to the charging gun port DC- through switch K2. The controller is connected to switch K1 and switch K2 and controls their on / off.

3. A DC charging pile for charging electric vehicles at the pile end according to claim 1, characterized in that: Inside the body, there is a 12V auxiliary power circuit. The mains power is connected to the 12V auxiliary power circuit. The 12V auxiliary power circuit is connected to port A+ through switch K3, and the 12V auxiliary power circuit is connected to port A- through switch K4. The controller is connected to switch K3 and switch K4 and controls their on / off.

4. A DC charging pile for charging electric vehicles at the pile end according to claim 1, characterized in that: On the body, there is a voice broadcast component, which is connected to the controller.

5. A DC charging pile for charging electric vehicles at the pile end according to claim 1, characterized in that: The switch S1 is relay PLY1.

6. A DC charging pile for charging electric vehicles at the pile end according to claim 5, characterized in that: The controller is connected to port CC1-S0. One end of resistor R35 is connected to port CC1-S0. The other end of resistor R35 is connected to one end of resistor R36, one end of capacitor C18 and the base of triode Q1. The other end of resistor R36, the other end of capacitor C18 and the emitter of triode Q1 are connected to port DGND. The collector of triode Q1 is connected to pin 2 and pin 3 of diode D15, and pin 1 of relay PLY1. Pin 1 of diode D15 is connected to pin 2 of relay PLY1 and port 5V. Port CC1 is connected to pin 4 of relay PLY1. Pin 3 of relay PLY1 is connected to the internal circuit of the body.

7. The DC charging pile for pre - booking charging of electric vehicles from the pile end according to claim 1, characterized in that: The switch S2 is relay PLY2.

8. The DC charging pile for pre-reserving charging of an electric vehicle from the pile end according to claim 7, characterized in that: The controller connection port CC2-S0, one end of the resistor R89 is connected to the port CC2-S0, the other end of the resistor R89 is connected to one end of the resistor R90, one end of the capacitor C64 and the base of the triode Q2, the other end of the resistor R90, the other end of the capacitor C64 and the emitter of the triode Q2 are connected to the port DGND, the collector of the triode Q2 is connected to pins 2 and 3 of the diode D61, and pin 1 of the relay PLY2, pin 1 of the diode D61 is connected to pin 2 of the relay PLY2 and the port 5V, the port CC2 is connected to pin 4 of the relay PLY2, and pin 3 of the relay PLY2 is connected to the body ground terminal.

9. A DC charging pile for charging electric vehicles at the pile end according to claim 1, characterized in that: The body is provided with an RFID component, and the RFID component is connected to the controller.

10. A DC charging pile for charging electric vehicles at the pile end according to claim 1, characterized in that: The body is provided with a camera and a lighting component, the camera and the lighting component are connected to the controller, and the controller is connected to a face recognition component.

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