CN216331462U

CN216331462U - Charging gun structure and charging system

Info

Publication number: CN216331462U
Application number: CN202122980796.XU
Authority: CN
Inventors: 李传志; 刘陈石
Original assignee: Zhejiang Geely Holding Group Co Ltd; Zhejiang LEVC R&D Co Ltd
Current assignee: Zhejiang Geely Holding Group Co Ltd; Zhejiang Yizhen Automobile Research and Development Co Ltd
Priority date: 2021-11-29
Filing date: 2021-11-29
Publication date: 2022-04-19
Anticipated expiration: 2031-11-29

Abstract

The utility model discloses a charging gun structure and a charging system, wherein the charging gun structure comprises: the charging device comprises a power supply direct current plug, a control box, a charging direct current plug and a main line, wherein the power supply direct current plug, the control box and the charging direct current plug are sequentially connected in series through the main line; the power supply direct current plug is used for connecting a power supply vehicle and obtaining direct current from the power supply vehicle; the charging direct current plug is used for connecting and outputting the direct current to the charging vehicle; the control box can control the on-off state of the main line, and when the main line is conducted, the direct current obtained by the power supply direct current plug can be transmitted to the charging direct current plug.

Description

Charging gun structure and charging system

Technical Field

The utility model relates to the technical field of charging gun structures, in particular to a charging gun structure and a charging system.

Background

With the rapid development of new energy electric automobile technology, the number of users of electric automobiles is rapidly increased, but due to the limited range of the whole automobile, the construction of matched charging facilities is incomplete, so that the situation of electric automobile power exhaustion demand rescue during driving frequently occurs. When the vehicle needs emergency rescue, the direct current output by a battery pack of the rescue vehicle is generally inverted into alternating current high voltage electricity, and then the alternating current high voltage electricity is transmitted to the rescued vehicle by utilizing a charging gun; the vehicle-mounted charger of the rescued vehicle rectifies the acquired alternating-current high-voltage electricity into direct-current electricity and then charges a battery pack of the rescued vehicle. The energy conversion in the charging process is realized by converting direct current into alternating current and then converting alternating current into direct current, and the electric energy conversion efficiency in the charging process is low due to more times of electric energy conversion and inevitable energy loss in the electric energy conversion process.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a charging gun structure and a charging system, and aims to improve charging energy conversion efficiency during vehicle rescue.

In order to achieve the above object, the present invention provides a charging gun structure for connecting a power supply vehicle and a charging vehicle, the charging gun structure comprising:

the charging device comprises a power supply direct current plug, a control box, a charging direct current plug and a main line, wherein the power supply direct current plug, the control box and the charging direct current plug are sequentially connected in series through the main line;

the power supply direct current plug is used for connecting the power supply vehicle and obtaining direct current from the power supply vehicle;

the charging direct current plug is used for connecting and outputting the direct current to the charging vehicle;

the control box can control the on-off state of the main line, and the direct current acquired by the power supply direct current plug can be transmitted to the charging direct current plug when the main line is conducted.

Optionally, the charging gun structure further includes a scram switch electrically connected to the main line, and the scram switch can control the on-off state of the main line.

Optionally, the emergency stop switch is integrated with the control box.

Optionally, the control box includes a display capable of displaying charging parameters of the charging vehicle and the power supply vehicle.

Optionally, the control box further includes a control panel and a wireless communication module electrically connected to the control panel, the wireless communication module can be in wireless communication connection with a central control host of the power supply vehicle, and the control panel can transmit the received operation instruction to the central control host through the wireless communication module.

Optionally, the control box further comprises an alarm module, and the alarm module can receive an alarm signal of a central control host of the power supply vehicle and make an alarm action.

Optionally, the display is provided as a touch display integrated with the control panel.

Optionally, the power supply dc plug is provided with a first a + terminal, a first a-terminal, a first S + terminal, and a first S-terminal, the charging dc plug is provided with a second a + terminal, a second a-terminal, a second S + terminal, and a second S-terminal, the first a + terminal is connected in series with the second a +, the first a-terminal is connected in series with the second a-terminal, and the first S + terminal is connected in series with the second S + terminal;

the power supply direct current plug further comprises a switch L1 and a first electromagnet, the switch L1 is connected in series between the first S-terminal and the second S-terminal, the positive electrode and the negative electrode of the first electromagnet are respectively electrically connected with the first A + terminal and the first A-terminal, and the first electromagnet can generate magnetic force after being electrified and drives the switch L1 to be switched from an off state to an on state through the magnetic force.

Optionally, the power supply dc plug further includes a first electronic lock, and an anode and a cathode of the first electronic lock are electrically connected to the first a + terminal and the first a-terminal, respectively, and when the first electronic lock is powered on, the first electronic lock can be connected to the power supply vehicle in a limited manner.

Optionally, the charging dc plug further includes a second electronic lock, and a positive electrode and a negative electrode of the second electronic lock are electrically connected to the second a + terminal and the second a-terminal, respectively, and when the second electronic lock is powered on, the second electronic lock can be connected to the charging vehicle in a limited manner.

Optionally, the emergency stop switch is connected in series between the first a + terminal and the second a + terminal.

The utility model also provides a charging system which comprises a power supply vehicle and the charging gun structure, wherein a power supply direct current plug of the charging gun structure is detachably connected to the power supply vehicle.

Optionally, the power supply vehicle includes a low-voltage power supply, a switch K3, a switch K4, and a first vehicle control device, the switch K3 and the switch K4 are controlled by the first vehicle control device, and the positive and negative poles of the low-voltage power supply are electrically connected to the power supply dc plug of the charging gun structure through the switch K4 and the switch K3, respectively;

the power supply direct current plug is further provided with a first CC1 terminal and a first CC2 terminal which are used for detecting the connection state, the charging system further comprises a first detection module and a second detection module, the first detection module is used for detecting a first voltage value on the first CC2 terminal, and the second detection module is used for detecting a second voltage value on the first CC1 terminal; the first vehicle control device is capable of controlling the switch K3 and the switch K4 to be turned on or off according to the first voltage value and the second voltage value.

Optionally, the second detection module includes a second detection power supply, a resistor R9, a second detection point C2, a switch K7, a resistor R4, and a resistor R3, which are disposed on the power supply vehicle, and the resistor R3 is disposed on the power supply dc plug, the resistor R3 and the resistor R4 are connected in parallel, one end of the resistor R3 is electrically connected to a ground line of a main line of the charging gun structure, the other end of the resistor R3 is connected in series to the switch K7, the second detection point C2, the resistor R9, and the second detection power supply through the first CC1 terminal, one end of the resistor R4 is electrically connected to the first CC1 terminal, and the other end of the resistor R4 is connected to the ground line of the power supply vehicle;

the first vehicle control device is also capable of controlling the switch K7 to be turned on or off according to the first voltage value.

According to the technical scheme, the charging gun structure can be used for obtaining direct current from a power supply vehicle, the obtained direct current is directly transmitted to the charging vehicle through the main line and the charging direct current plug, and a vehicle-mounted charger on the charging vehicle can charge a battery pack of the vehicle by using the direct current, so that the charging rescue aim of the charging vehicle is fulfilled. The charging process saves two electric energy conversion processes of converting direct current generated by a battery pack of a power supply vehicle into alternating current high voltage electricity and converting the alternating current high voltage electricity into the direct current electricity by a vehicle-mounted charger of the charging vehicle, thereby saving energy loss in the electric energy conversion process and further improving the electric energy conversion efficiency of the charging process.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a charging gun according to an embodiment of the present invention;

fig. 2 is a schematic diagram of the circuit connection between the charging gun structure of fig. 1 and the power supply vehicle and the charging vehicle.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				10	Charging gun structure	130	Charging DC plug
110	DC power supply plug	140	Main line
				120	Control box	150	Emergency stop switch
121	Display device

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

In view of the above, the present invention provides a charging gun structure and a charging system, referring to fig. 1, in an embodiment of the present invention, the charging gun structure 10 includes:

the power supply direct current plug 110, the control box 120, the charging direct current plug 130 and the main line 140 are sequentially connected in series through the main line 140;

the power supply direct current plug 110 is used for connecting a power supply vehicle and obtaining direct current from the power supply vehicle;

the charging direct current plug 130 is used for connecting and outputting the direct current to a charging vehicle;

the control box 120 can control the on-off state of the main line 140, and when the main line 140 is turned on, the direct current obtained by the power supply direct current plug 110 can be transmitted to the charging direct current plug 130.

In the technical scheme of the utility model, the charging gun structure 10 can obtain direct current from a power supply vehicle, the obtained direct current is directly transmitted to the charging vehicle through the main line 140 and the charging direct current plug 130, and a vehicle-mounted charger on the charging vehicle can charge a battery pack of the vehicle by using the direct current, so that the charging rescue aim of the charging vehicle is fulfilled. The charging process saves two electric energy conversion processes of converting direct current generated by a battery pack of a power supply vehicle into alternating current high voltage electricity and converting the alternating current high voltage electricity into the direct current electricity by a vehicle-mounted charger of the charging vehicle, thereby saving energy loss in the electric energy conversion process and further improving the electric energy conversion efficiency of the charging process.

Referring to fig. 1, in the present embodiment, the charging gun structure 10 further includes an emergency stop switch 150 electrically connected to the main line 140, and the emergency stop switch 150 can control the on/off state of the main line 140. Thus, when a user is in emergency, for example, when the temperature of the battery pack of the charging vehicle is abnormal, the electric energy transmission path of the charging gun structure 10 can be cut off rapidly, so that further deterioration of accidents or accident degree is prevented, and the guarantee of personal safety and property safety in the use process of the product is improved.

Referring to fig. 1, in the present embodiment, further, an emergency stop switch 150 is provided integrally with the control box 120. Thus, the user can press the emergency stop switch 150 by means of the control box 120, so that the emergency stop switch 150 can rapidly and accurately perform the function of cutting off the circuit, thereby improving the convenience and reliability of the emergency stop switch 150. Secondly, the emergency stop switch 150 and the control box 120 are integrated, and the installation structure and the assembly process of the emergency stop switch and the main line 140 can be simplified, so that the assembly efficiency of the charging gun structure 10 can be improved, and the production cost of the charging gun structure 10 can be reduced. However, the design is not limited thereto, and in other embodiments, the emergency stop switch and the charging dc plug may be integrated, or the emergency stop switch and the power supply dc plug may be integrated.

Referring to fig. 1, in the present embodiment, further, the control box 120 includes a display 121, and the display 121 is capable of displaying charging parameters of the charging vehicle and the power supply vehicle. It should be noted that the charging parameters include charging voltage, charging current, battery temperature, SOC (State of Charge), number of faults, fault description, fault level, and charging real-time fee of the power supply vehicle and the charging vehicle during charging. Without loss of generality, the charging process of the electric automobile is that the vehicle control device collects information of the battery pack through the battery management module and controls the vehicle-mounted charger to charge the battery pack through a special control algorithm, so that battery management including balance management and thermal management is realized. The charging parameters and the diagnosis information are displayed by the display 121, so that a user can timely perceive and judge abnormal working conditions, the functions of manual auxiliary monitoring and troubleshooting are realized, faults such as abnormal battery temperature rise can be timely found and processed, and personal safety factors and property safety factors are further improved. Furthermore, part of the charging parameters are dynamically changed during the charging process, so it is necessary to maintain communication between the supplying vehicle and the charging vehicle so that the display 121 can timely acquire and display the charging parameters of both vehicles.

In this embodiment, further, the control box 120 further includes a control panel and a wireless communication module electrically connected to the control panel, the wireless communication module can establish a wireless communication connection with a central control host of the power supply vehicle, and the control panel can transmit the received operation instruction to the central control host through the wireless communication module. Of course, the vehicle-mounted wireless communication module set on the central control host corresponding to the wireless communication module can also wirelessly transmit the signal and data of the central control host to the control box 120 and display the signal and data on the display 121, thereby realizing the bidirectional communication function between the central control host and the control box 120. The touch display 121 is used for receiving the instruction, and the wireless communication module sends the instruction to control the central control host, so that a user can operate the charging system and functions outside the vehicle conveniently.

Optionally, the Wireless communication module may be at least one of a WI-FI (Wireless Fidelity) module, a 4G mobile network module, a 5G mobile network module, a bluetooth module, or a COFDM (Code Orthogonal Frequency Division Multiplexing) Wireless communication module.

In this embodiment, the display 121 is optionally a touch display 121 integrated with a control panel. Thus, the structure of the control box 120 can be simplified, and a user can check the charging parameters on the control box 120 and input corresponding operation instructions according to needs. It should be noted that the operation instruction refers to, for example, clicking "start charging" or "stop charging" on the touch display 121, and the signal corresponding to the operation can control whether the charging gun structure 10 starts the charging function. However, the design is not limited thereto, and in other embodiments, the display may be a liquid crystal display (lcd) or a crt (Cathode Ray Tube) display, and the control panel may be a physical button, a knob, or a touch panel.

In this embodiment, optionally, the control box 120 further includes an alarm module electrically connected to the wireless communication module, and the alarm module can perform an alarm action after receiving the alarm signal of the first vehicle control device. It should be noted that the alarm module may be an alarm capable of sounding, such as a buzzer, an alarm capable of emitting light, such as an alarm lamp, or an audible and visual alarm capable of sounding and emitting light at the same time; the corresponding alarm action is to sound and/or light.

Referring to fig. 1 and fig. 2, in this embodiment, further, the power supply dc plug 110 includes a power supply handle and a power supply core barrel disposed on the power supply handle, the charging dc plug 130 includes a charging handle and a charging core barrel disposed on the charging handle, the power supply core barrel is provided with nine connection terminals, and the nine connection terminals include: a first DC + terminal, a first DC-terminal, a first A + terminal, a first A-terminal, a first S + terminal, a first S-terminal, a first CC1 terminal, a first CC2 terminal, and a first PE terminal. The rifle core that charges also is equipped with nine connecting terminals, and nine connecting terminals include: a second DC + terminal, a second DC-terminal, a second A + terminal, a second A-terminal, a second S + terminal, a second S-terminal, a second CC1 terminal, a second CC2 terminal, and a second PE terminal. A direct current charging port (a socket A in fig. 2) of the power supply vehicle is provided with nine connecting terminals corresponding to the power supply gun core, and after a power supply plug is inserted into the direct current charging port, the nine connecting terminals on the power supply gun core can be correspondingly connected with one of the nine connecting terminals; the dc charging port (socket B in fig. 2) of the charging vehicle is provided with nine connection terminals corresponding to the charging core, and when the charging plug is inserted into the dc charging port, the nine connection terminals on the charging core can be correspondingly connected to one of the nine connection terminals. The first DC + terminal and the second DC + terminal are connected in series through the live wire of the main wire 140, and the first DC-terminal and the second DC-terminal are connected in series through the neutral wire of the main wire 140 and are used together as a power terminal for DC charging. The first PE terminal and the second PE terminal are connected in series through the ground line of the main line 140, and can be connected in series with the body ground line of the electric supply vehicle and the body ground line of the charging vehicle, respectively. The first S + terminal and the second S + terminal are connected in series through the main line 140, and the first S-terminal and the second S-terminal are connected in series through the main line 140 and collectively function as a communication terminal between the power supply vehicle and the charging vehicle. The first a + terminal and the second a + terminal are connected in series via the main line 140, and the first a-terminal and the second a-terminal are connected in series via the main line 140 and collectively function as an auxiliary power supply line for supplying operating power to the display 121 and a second vehicle control device of the charging vehicle. One end of the first CC1 terminal is electrically connected to the first PE terminal, and the other end is electrically connectable to the electric supply vehicle; one end of the first CC2 terminal is connected to the second CC1 terminal through the main line 140, and the other end is electrically connectable to the electric supply vehicle; the other end of the second CC1 terminal is electrically connectable to a charging vehicle; one end of the second CC2 terminal is electrically connected to the second PE terminal, and the other end can be electrically connected to the charging vehicle. The first CC1 terminal and the first CC2 terminal are used to detect the connection state between the supply vehicle and the supply dc plug 110, and the second CC1 terminal and the second CC2 terminal are used to detect the connection state between the charging vehicle and the charging dc plug 130.

Referring to fig. 2, the power supply vehicle includes a first vehicle control device, a switch K1, a switch K2, a switch K3, a switch K4, a first power battery, and a low voltage power supply for supplying operating power to the display 121 and the second vehicle control device, wherein a positive electrode of the low voltage power supply is connected to the first a + terminal through the switch K4, and a negative electrode of the low voltage power supply is connected to the first a-terminal through the switch K3; the switch K4 and the switch K3 are both controlled by the first vehicle control device, and when the switch K4 and the switch K3 are both on, the first A + terminal and the first A-terminal are energized; the positive pole of the first power battery is connected with the first DC + terminal through a switch K1, the negative pole is connected with the first DC-terminal through a switch K2, and the switch K1 and the switch K2 are both controlled by the first vehicle control device. The charging vehicle further comprises a switch K5, a switch K6, and a second power battery, the positive pole of which is connected to the second DC + terminal via a switch K5, the negative pole of which is connected to the second DC-terminal via a switch K5, and both the switch K5 and the switch K6 are controlled by a second vehicle control device.

In this embodiment, the power supply dc plug 110 further includes a switch L1 and a first electromagnet, the switch L1 is connected in series between the first S-terminal and the second S-terminal, the positive electrode and the negative electrode of the first electromagnet are electrically connected to the first a + terminal and the first a-terminal, respectively, and the first electromagnet can generate a magnetic force after being energized, and drives the switch L1 to be turned on from off by the magnetic force. When the first electromagnet is not energized, the magnetic force that drives the switch L1 to turn on disappears, and the switch L1 returns to the off state. Specifically, when the first a + terminal and the first a-terminal are energized and low-voltage power is supplied to the display 121, that is, when the display 121 is turned on to enter the operating state, the switch L1 is turned on to energize the circuit including the first S-terminal and the second S-terminal, so that the electric-powered vehicle and the charging vehicle can be communicatively connected through the circuit including the first S + terminal and the first S-terminal. The switch L1 is used for establishing the electric connection of the auxiliary power supply firstly and then establishing the communication connection between the power supply vehicle and the charging vehicle, and the device has the advantages of simple structure and reliable work.

In this embodiment, the power supply dc plug 110 further includes a first electronic lock, and the positive electrode and the negative electrode of the first electronic lock are electrically connected to the first a + terminal and the first a-terminal, respectively, and when the first electronic lock is powered on, the first electronic lock can be connected to the power supply vehicle in a limited manner. The first electronic lock is used for locking the power supply direct current plug 110 with the power supply vehicle, so that the power supply direct current plug 110 is prevented from being accidentally separated from the power supply vehicle when the power supply direct current is conveyed, and the stability and the safety of charging operation are ensured.

In this embodiment, the charging dc plug 130 further includes a switch L2 and a second electromagnet, the switch L2 is connected in series between the first S-terminal and the second S-terminal, the positive and negative poles of the second electromagnet are electrically connected to the second a + terminal and the second a-terminal, respectively, the second electromagnet can generate magnetic force after being energized, and the switch L2 is driven by the magnetic force to turn on from off. When the second electromagnet is not energized, the magnetic force that drives the switch L2 to turn on disappears, and the switch L2 returns to the off state. Specifically, when the circuits of the first a + terminal and the first a-terminal are energized, the switch L2 and the switch L2 are both turned on, so that the circuit of the first S-terminal is energized, and the power supply vehicle and the charging vehicle can establish communication connection.

In this embodiment, the charging dc plug 130 further includes a second electronic lock, and a positive electrode and a negative electrode of the second electronic lock are electrically connected to the second a + terminal and the second a-terminal, respectively, and when the second electronic lock is powered on, the second electronic lock can be connected to the charging vehicle in a limited manner. The charging direct current plug 130 and the charging vehicle are locked by the second electronic lock, and the charging direct current plug 130 is prevented from being accidentally separated from the charging vehicle when the charging direct current is transmitted, so that the stability and the safety of charging operation are ensured.

Referring to fig. 2, in the present embodiment, optionally, the emergency stop switch 150 is connected in series between the first a + terminal and the second a + terminal. Therefore, after the emergency stop switch 150 is disconnected, the circuits of the first A + terminal and the first A-terminal are not electrified, so that the first electronic lock and the second electronic lock can be unlocked, a user can timely pull out the power supply direct current plug 110 and the charging direct current plug 130 in an emergency, and the guarantee on personal safety and property safety in the use process of the product is further improved. It should be noted that the off signal of the emergency stop switch 150 can also be transmitted to the first vehicle control device, so that the first vehicle control device is utilized to control the switch K1 and the switch K2 to be both turned off, so that the transmission of the direct current can be terminated in time, and the personal safety problem can be avoided.

In this embodiment, the charging system further includes a first detection module and a second detection module, the first detection module is configured to detect a first voltage value at the first CC2 terminal, and the second detection module is configured to detect a second voltage value at the first CC1 terminal; if both the first voltage value and the second voltage value are within the preset range, the switch K3 and the switch K4 are controlled to be turned on by the first vehicle control device to energize the a + terminal and the a-terminal.

Referring to fig. 2, in this embodiment, optionally, the first detection module includes a first detection power source U1, a resistor R5, a first detection point C1, a resistor R2, a resistor R1, a resistor R8, a resistor R6, a resistor R4', a normally closed contact S1 connected to two ends of the resistor R2, and a normally closed contact S2 connected to two ends of the resistor R6, where the resistor R2 and the resistor R1 are connected in series, and the other end of the resistor R1 is connected to a ground line; the resistor R8, the resistor R6 and the resistor R4 'are connected in series, and the other end of the resistor R4' is grounded; a first series branch composed of a resistor R2 and a resistor R1 is connected in parallel with a second series branch composed of a resistor R8, a resistor R6, and a resistor R4', and the other end of the resistor R2 is connected in series with a first detection point C1, a resistor R5, and a first detection power source U1 in this order through a first CC2 terminal. The first detection power source U1, the resistor R5 and the first detection point C1 are all arranged on the power supply vehicle, the resistor R2, the resistor R1 and the normally closed contact S1 are all arranged on the power supply direct current plug 110, the resistor R8, the resistor R6 and the normally closed contact S2 are all arranged on the charging direct current plug 130, and the resistor R4' is arranged on the charging vehicle. Specifically, the voltage of the first detection power source U1 is set to 12V, the resistance of the resistor R1 is 4K Ω, the resistance of the resistor R2 is 10K Ω, the resistance of the resistor R6 is 10K Ω, the resistance of the resistor R8 is 3K Ω, and the resistance of the resistor R4' is 1K Ω. If the first CC2 terminal is not connected to the electric supply vehicle, the first voltage value is 12V. If the first CC2 terminal is successfully electrically connected to the power supply vehicle, but the second CC1 terminal is not successfully electrically connected to the charging vehicle, the normally closed contact S1 is open, the first series branch of the first detection module is powered on, the second series branch is not powered on, and the first voltage value measured at the first detection point C1 is (9.6 ± 0.4) V. If the first CC2 terminal is successfully electrically connected to the power supply vehicle and the second CC1 terminal is successfully electrically connected to the charging vehicle, the normally closed contact S1 and the normally closed contact S2 are both opened, the first series branch and the second series branch of the first detection module are both powered on, and at this time, the first voltage value measured at the first detection point C1 is (8 ± 0.4) V. Without loss of generality, the (8 ± 0.4) V may be set to a first preset range, and if the first voltage value is in the first preset range, a signal indicating that the first CC2 terminal is successfully electrically connected to the electric supply vehicle and the second CC1 terminal is successfully electrically connected to the electric charging vehicle may be sent to the first vehicle control device. However, the design is not limited thereto, and in other embodiments, the voltage value of the first detection power source, the number of resistors used, and the resistance value may be set according to actual requirements, and the first preset range may also be changed accordingly.

In this embodiment, optionally, the second detection module includes a second detection power source U2, a resistor R9, a second detection point C2, a switch K7, a resistor R4, and a resistor R3, which are disposed on the power supply dc plug 110, the resistor R3 is connected in parallel with the resistor R4, one end of the resistor R3 is electrically connected to the ground of the main line 140, the other end of the resistor R3 is sequentially connected in series to the switch K7, the second detection point C2, the resistor R9, and the second detection power source U2 through a first CC1 terminal, one end of the resistor R4 is electrically connected to the first CC1 terminal, and the other end of the resistor R4 is connected to the ground of the power supply vehicle; the first vehicle control device can also control the switch K7 to be turned on or off according to the first voltage value. Specifically, the voltage of the second detection power source U2 is set to 12V, the resistance of the resistor R4 is 1K Ω, the resistance of the resistor R4 is 1K Ω, and the resistance of the resistor R9 is 1K Ω. If the first CC1 terminal is not successfully electrically connected to the power supply vehicle, the second voltage value measured at the second detection point C2 is 12V. If the first CC2 terminal is successfully electrically connected to the power supply vehicle, that is, the first voltage value is within the first predetermined range, and the first CC1 terminal is successfully electrically connected to the power supply vehicle, the second voltage value measured at the second detection point C2 is (4 ± 0.4) V. Without loss of generality, the (4 ± 0.4) V may be set to a second preset range, and if the second voltage value is in the second preset range, a signal indicating that the electrical connection of the first CC1 terminal is successful may be sent to the first vehicle control device. Then, the first vehicle control apparatus controls the switch K3 and the switch K4 to be turned on according to the signals of the first and second sensing modules, thereby energizing the a + terminal and the a-terminal to supply the operating power to the display 121 and simultaneously controlling the switch K1 and the switch K2 to be turned on. In addition, without loss of generality, if the first voltage value is in the third preset range, the switch K7 is controlled to be turned off, and the second detection module is not powered on at the moment, so that the second detection module is protected. Specifically, according to the setting of the first detection module in this embodiment, the third preset range is (6 ± 0.4) V. It should be noted that, when the first voltage value is (6 ± 0.4) V, which indicates that the power supply vehicle is in the charged mode, that is, the power supply vehicle is in the state of receiving the dc charge of the national standard charging post, the switch K7 is controlled to be turned off by using the first voltage value measured in advance by the first detection module, so that the second detection module can be protected from being damaged, for example, when an external loop is connected to the first CC1 terminal, the switch K7 is turned off, which can prevent the operating voltage source of the second detection module from being damaged. However, the design is not limited thereto, and in other embodiments, the voltage value of the first detection power supply, the voltage value of the second detection power supply, the number of resistors used, and the resistance value may be set according to actual requirements, and the second predetermined range and the third predetermined range may also be changed accordingly.

In the embodiment, the charging system further includes a third detection module, which is capable of detecting a third voltage value at the second CC2 terminal, and controlling the switches K5 and K6 to be turned on by the second vehicle control device if the third voltage value is within a fourth preset range.

In this embodiment, optionally, the third detection module includes a third detection power source U3, a resistor R5 ', a third detection point C3, and a resistor R7, which are connected in series in sequence, where the resistor R7 is disposed on the charging dc plug 130, one end of the resistor R7 is connected to the ground, and the other end is connected to the resistor R5 ' through a second CC2 terminal, and the third detection power source U3, the resistor R5 ', and the third detection point C3 are all disposed on the power supply vehicle. Specifically, the voltage of the third detection power source U3 is set to 12V, the resistance of the resistor R7 is 1K Ω, and the resistance of the resistor R5' is 1K Ω. If the second CC2 terminal is not successfully electrically connected with the charging vehicle, the second voltage value at the third detection point C3 is 12V; if the second CC2 terminal is successfully electrically connected to the charging vehicle, the second voltage value at the third detection point C3 is (6 ± 0.4) V. Without loss of generality, this (6 ± 0.4) V may be set to a fourth preset range, and if the second voltage value is in the fourth preset range, a signal indicating that the second CC2 terminal and the charging vehicle are electrically connected successfully may be sent to the second vehicle control device, which may then control switches K5 and K6 to be turned on. In this manner, in conjunction with the turning on of the switch K1 and the switch K2, the circuit in which the first DC + terminal and the first DC-terminal are located is energized, so that the electric-powered vehicle can formally start providing the service of direct-current charging to the charging vehicle. However, the design is not limited thereto, and in other embodiments, the voltage value of the third detection power source, the number of resistors used, and the resistance value may be set according to actual requirements, and the fourth preset range may also be changed accordingly.

The present invention further provides a charging system, including a power supply vehicle and the charging gun structure, where the specific structure of the charging gun structure refers to the above embodiments, and since the charging system adopts all technical solutions of all the above embodiments, the charging system at least has all beneficial effects brought by the technical solutions of the above embodiments, and details are not repeated herein. Wherein, the power supply direct current plug of the rifle structure that charges can dismantle and connect in the power supply vehicle.

When the charging system is used, the power supply plug and the charging plug are respectively inserted into the direct current charging port of the power supply vehicle and the direct current charging port of the charging vehicle, when the two ends are successfully connected, the display of the control box starts to work, and the first vehicle control device and the second vehicle control device establish communication connection through the circuit where the first S + terminal and the first S-terminal are located. The first vehicle control device may be a central control host on the electric supply vehicle. The display provides the option of 'starting charging' for the user, if the user clicks the option, the display sends an operation instruction corresponding to the option to the central control host through the wireless transmission module, then the central control host starts to detect and diagnose the vehicle conditions of the power supply vehicle and the charging vehicle, and wirelessly transmits data including diagnosis information to the control box so as to be displayed on the display and conveniently viewed by the user during the operation outside the vehicle. When the charging diagnosis is completed and the diagnosis result is no fault, the power supply vehicle starts to provide the direct current charging service for the charging vehicle and starts to charge the charging fee. In the charging service process, the central control host can perform charging diagnosis at any time, and timely transmits vehicle parameters monitored by the charging diagnosis to the display of the control box, so that a user can conveniently check the vehicle parameters and find out abnormal charging conditions during the operation outside the vehicle. The vehicle parameters monitored by the charging diagnosis comprise charging voltage, charging current, battery temperature, SOC, fault number, fault description, fault level and charging real-time cost.

When the charging diagnosis is failed, the direct current charging service is suspended, the warning mark is displayed on the display screen, and after the failure is eliminated, the vehicle condition detection and diagnosis are carried out again until the failure is completely eliminated, and the direct current charging service is not carried out continuously. If the fault danger level is higher, an alarm module is used for giving an alarm to a user, for example, the alarm is given in the form of buzzing or red light flashing; some fault types can be preset to be high-risk levels, and if faults belonging to the fault types exist in the diagnosis result, the situation that alarm is needed is judged.

When charging is completed, the display provides a charging stopping option for a user, if the user clicks the option, the display sends an operation instruction corresponding to the option to the central control host through the wireless transmission module, and the central control host controls the switch K1 and the switch K2 to be disconnected, so that the direct current charging service is stopped. And then, the payment two-dimensional code is displayed on the display, and after the user who receives the charging service successfully scans the code and pays, the first electronic lock on the power supply plug and the second electronic lock on the charging plug are unlocked, so that the user can pull out the power supply plug and the charging plug, and the charging service is completed.

The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A charging gun structure for connecting a power supply vehicle and a charging vehicle, comprising:

the control box can control the on-off state of the main line, and when the main line is conducted, the direct current obtained by the power supply direct current plug can be transmitted to the charging direct current plug;

the charging gun structure further comprises an emergency stop switch electrically connected with the main line, and the emergency stop switch can control the on-off state of the main line.

2. The charging gun structure according to claim 1, wherein the scram switch is provided integrally with the control box.

3. The charge gun structure of claim 1, wherein said control box includes a display capable of displaying charging parameters of said charging vehicle and said supply vehicle.

4. The charging gun structure according to claim 3, wherein the control box further comprises a control panel, and a wireless communication module electrically connected to the control panel, the wireless communication module being capable of wirelessly communicating with a central control host of the electric supply vehicle, the control panel being capable of transmitting the received operation command to the central control host through the wireless communication module; and/or

The control box also comprises an alarm module, and the alarm module can receive an alarm signal of a central control host of the power supply vehicle and make an alarm action; and/or

The display is a touch display integrated with the control panel.

5. The charging gun structure according to claim 1, wherein said dc power supply plug is provided with a first a + terminal, a first a-terminal, a first S + terminal, and a first S-terminal, said dc charging plug is provided with a second a + terminal, a second a-terminal, a second S + terminal, and a second S-terminal, said first a + terminal is connected in series with said second a +, said first a-terminal is connected in series with said second a-terminal, and said first S + terminal is connected in series with said second S + terminal;

6. The structure of claim 5, wherein the power supply dc plug further comprises a first electronic lock, positive and negative electrodes of the first electronic lock are electrically connected to the first a + terminal and the first a-terminal, respectively, and the first electronic lock can be limitedly connected to the power supply vehicle when the first electronic lock is powered on; and/or

The charging direct-current plug further comprises a second electronic lock, wherein the positive electrode and the negative electrode of the second electronic lock are electrically connected with the second A + terminal and the second A-terminal respectively, and when the second electronic lock is electrified, the second electronic lock can be connected to the charging vehicle in a limiting mode.

7. The charge gun structure of claim 6, wherein said scram switch is connected in series between said first a + terminal and said second a + terminal.

8. A charging system comprising an electric supply vehicle and a charging gun structure according to any one of claims 1 to 7, the supply DC plug of the charging gun structure being detachably connected to the electric supply vehicle.

9. The charging system of claim 8, wherein the electric supply vehicle comprises a low-voltage power supply, a switch K3, a switch K4, and a first vehicle control device, the switch K3 and the switch K4 are controlled by the first vehicle control device, and the positive and negative poles of the low-voltage power supply are electrically connected with a power supply dc plug of the charging gun structure through the switch K4 and the switch K3, respectively;

10. The charging system of claim 9, wherein the second detection module comprises a second detection power supply, a resistor R9, a second detection point C2, a switch K7 and a resistor R4, which are arranged on the power supply vehicle, and a resistor R3 arranged on the power supply dc plug, the resistor R3 and the resistor R4 are connected in parallel, one end of the resistor R3 is electrically connected to a ground line of a main line of the charging gun structure, and the other end is connected in series with the switch K7, the second detection point C2, the resistor R9 and the second detection power supply through the first CC1 terminal, one end of the resistor R4 is electrically connected to the first CC1 terminal, and the other end is connected to the ground line of the power supply vehicle;