Civil air defense project emergency power supply system and method based on bidirectional interaction charging and discharging technology

Abstract

The invention belongs to the technical field of emergency power supply, and particularly relates to a civil air defense engineering emergency power supply system and method based on a bidirectional interaction charging and discharging technology. The civil air defense engineering emergency power supply system comprises an electric vehicle, a charging pile, an electric power source and a civil air defense distribution box; an electric power supply converts an alternating current power supply into a direct current power supply through the power supply interface of the charging pile and the bidirectional AC / DC conversion module, and charges a power storage battery of the electric vehicle through the charging and discharging interface and the charging and discharging special cable; when the power failure of the electric power supply is detected, the power storage battery of the charging pile outputs power to the civil air defense distribution box through the DC charging and discharging interface and the charging and discharging special cable via the charging and discharging interface of the charging pile, the bidirectional AC / DC conversion module and the discharging power supply interface. The electric vehicle is charged at ordinary times, the electric vehicle is rapidly switched to a discharging mode in emergency, and a stable emergency power supply is provided for important places such as civil air defense projects.

Description

Technical Field

[0001] The present invention belongs to the technical field of emergency power supply, and specifically relates to a civil air defense engineering emergency power supply system and method based on a two-way interactive charging and discharging technology. Background Art

[0002] At present, civil air defense medical rescue projects and various civil air defense projects with a construction area of ​​more than 5,000m² are equipped with internal diesel power stations; for air-raid shelters with a construction area of ​​5,000m² or less, the emergency power supply in wartime is drawn from the regional power station (EPS or UPS battery packs are set up inside the project for the first-level load in wartime) or all powered by internal EPS or UPS battery packs. According to the peacetime-wartime conversion management regulations, the internal power stations of wartime central hospitals and wartime emergency hospitals are required to be installed in place during peacetime, and the internal power stations of other civil air defense projects are required to reserve conditions for the installation of diesel generator sets. The diesel generator sets in Class A air-raid shelters should be installed and debugged within 15 days. The diesel generator sets in Class B air-raid shelters should be installed and debugged within 30 days.

[0003] The cost of emergency power supply conversion from peacetime to wartime is high and difficult to implement. The existing construction area of ​​civil air defense projects is huge, and the demand for diesel generator sets and battery sets is also very large. Due to construction costs and equipment supply reasons, it may be difficult to ensure the timely supply of diesel generator sets and battery sets within the peacetime to wartime conversion period; my country's dependence on foreign oil supply is relatively high, and it is difficult to ensure the timely supply of diesel required for the operation of diesel generator sets in civil air defense power stations in wartime; the distance of wartime power cables drawn from regional power stations is generally long, and the laying of cables involving outdoor parts is difficult. Summary of the invention

[0004] Purpose of the invention: The purpose of the present invention is to address the deficiencies of the existing emergency power supply system for civil air defense projects and to provide an emergency power supply system and method for civil air defense projects based on two-way interactive charging and discharging technology, which can charge electric vehicles in normal times and quickly switch to discharge mode in emergency situations, thereby providing a stable emergency power supply for important places such as civil air defense projects.

[0005] Technical solution: The civil air defense engineering emergency power supply system based on the two-way interactive charging and discharging technology of the present invention comprises: an electric vehicle, which comprises a power battery, an electric vehicle control unit, an AC charging and discharging interface and a DC charging and discharging interface; a charging pile, which comprises a charging pile control unit, a two-way AC / DC conversion module, a charging and discharging interface, a power supply interface, a discharging power supply interface, and a power supply unit; a civil air defense distribution box; an electric power supply; a charging and discharging special cable for connecting the electric vehicle and the charging pile; The charging pile control unit can automatically switch the charging and discharging mode according to the signal status of the power supply, work in the charging mode when the power supply is normal, and automatically switch to the discharging mode for emergency power supply when the power supply is cut off; In the charging mode, the charging pile control unit obtains the charging demand signal sent by the electric vehicle control unit, and the AC power output by the power supply is converted into a DC power supply through the power supply interface of the charging pile and the bidirectional AC / DC conversion module, and then output through the charging and discharging interface, and input to the DC charging and discharging interface of the electric vehicle through the dedicated charging and discharging cable to charge the power battery; In the discharge mode, the charging pile control unit sends a discharge demand signal to the electric vehicle control unit. The power battery of the electric vehicle is output through the DC charging and discharging interface, and is input to the charging and discharging interface of the charging pile through the dedicated charging and discharging cable. The DC power supply is converted into AC380V AC power supply through the bidirectional AC / DC conversion module, and then the civil defense distribution box is powered through the discharge power supply interface.

[0006] The charging pile control unit detects the grid voltage of the power supply in real time. After determining that the grid is out of power, the charging pile control unit will communicate and interact with the electric vehicle control unit to start the discharge mode for emergency power supply.

[0007] To further improve the above technical solution, the dedicated charging and discharging cable includes: a cable body for connecting an electric vehicle and a charging pile and standardized interfaces arranged at both ends of the cable body; the cable body includes: a power line for transmitting high-power direct current; a signal line for transmitting collected signals; a communication line for data communication; and an auxiliary power line for outputting alternating current power.

[0008] The power line can realize the bidirectional input and output of the DC power supply for charging and discharging electric vehicles; the signal line is used to transmit the collected information inside the electric vehicle to the charging pile; the communication line adopts the CAN communication protocol to realize the information exchange between the electric vehicle control unit and the charging pile control unit, and the real-time information interaction is carried out through the dedicated charging and discharging cable to control the charging and discharging conversion of the power battery; the auxiliary power line is used to output AC low-power AC220V power supply. The dedicated charging and discharging cable realizes: the input and output of the DC power supply for charging and discharging of electric vehicles; the output of AC low-power AC220V power supply; and the information exchange between the electric vehicle control unit and the charging pile control unit.

[0009] Furthermore, it also includes an operation monitoring unit and an on-site gateway; the electric vehicle control unit transmits the real-time temperature, discharge power, and remaining power of the power battery to the charging pile control unit via a dedicated charging and discharging cable; the charging pile control unit collects the real-time temperature, output power, output power voltage, current, and frequency inside the charging pile, and sends the collected information and the information transmitted by the electric vehicle control unit to the operation monitoring unit via the on-site gateway; the operation monitoring unit issues an alarm message when an abnormal equipment status is detected.

[0010] Furthermore, a dual power automatic switching switch is provided in the air defense distribution box, which can realize the automatic switching between the electric power supply and the emergency power supply. A dual power automatic switching switch is provided in the air defense distribution box, which realizes the automatic switching between the electric power supply and the emergency power supply, improves the continuity of power supply, enhances the adaptability of the system in emergency situations, and completes the power switching without manual intervention.

[0011] Furthermore, the electric vehicle can be charged through a DC charging and discharging port or output a high-power DC power supply to the outside, and the electric vehicle can be charged through an AC charging and discharging port or output a low-power AC220V power supply to the outside.

[0012] Furthermore, the AC220V alternating current power output by the electric vehicle can provide power for the normal operation of the charging pile when the electric power source is cut off.

[0013] Furthermore, it also includes a UPS power supply, which is connected to the charging pile control unit through the power supply unit, and is used to provide power for the normal operation of the charging pile when the electric power supply is cut off and the electric vehicle has no AC220V AC power output function.

[0014] The charging and discharging control method of the civil air defense engineering emergency power supply system based on the bidirectional interactive charging and discharging technology comprises the following steps: S1: The electric vehicle is connected to the charging pile through a dedicated charging and discharging cable. The charging pile control unit obtains the charging demand signal sent by the electric vehicle control unit and enters the charging mode. The power supply converts the AC power into DC power through the bidirectional AC / DC conversion module of the charging pile, and charges the power battery of the electric vehicle through the dedicated charging and discharging cable. S2: The charging pile control unit detects the current power supply status according to the power supply signal. If the power supply is normal, the charging pile control unit works in the charging mode. If the power supply is interrupted, it automatically switches to the discharging mode. S3: In the discharge mode, the charging pile control unit sends a discharge demand signal to the electric vehicle control unit. At this time, the power battery converts the electric energy in the electric vehicle power battery into AC power output through the DC charging and discharging interface, dedicated charging and discharging cable, charging and discharging interface, bidirectional AC / DC conversion module, and discharge power supply interface to provide emergency power supply to the civil air defense distribution box.

[0015] Furthermore, it also includes an operation monitoring unit and an on-site gateway; the electric vehicle control unit transmits the real-time temperature, discharge power, and remaining power of the power battery to the charging pile control unit via a dedicated charging and discharging cable; the charging pile control unit collects the real-time temperature, output power, output power voltage, current, and frequency inside the charging pile, and sends the collected information and the information transmitted by the electric vehicle control unit to the operation monitoring unit via the on-site gateway; the operation monitoring unit issues an alarm message when an abnormal device status is detected; the operation monitoring unit monitors the temperature, discharge power, and remaining power of the electric vehicle power battery, as well as the temperature, output voltage, current, and frequency parameters inside the charging pile in real time, and issues an alarm message when an abnormal status is detected.

[0016] Furthermore, it also includes: automatic switching between the main power supply and the emergency power supply is achieved through the dual power supply automatic switching switch set in the civil defense distribution box; when the main power supply is cut off, the AC charging and discharging interface of the electric vehicle or the external UPS power supply is used to provide a backup power supply for the charging pile control unit.

[0017] Beneficial effects: Compared with the prior art, the advantages of the present invention are: in the present invention, the charging pile control unit can automatically detect the state of the power supply and switch the charging and discharging modes in real time. Under normal power supply conditions, the system charges the power battery of the electric vehicle; in emergency situations, the system converts the DC power output by the power battery into AC380V AC power to supply power to the civil air defense distribution box. This bidirectional current conversion capability improves the energy utilization efficiency of the system, enabling it to work flexibly in different scenarios.

[0018] Multiple functions are realized through the power line, signal line, communication line and auxiliary power line in the special charging and discharging cable. The power line realizes two-way current transmission between the electric vehicle and the charging pile; the signal line is used to transmit the collected temperature, power, remaining power and other data; the communication line ensures real-time communication between the charging pile and the electric vehicle through the CAN protocol, and controls the charging and discharging behavior of the power battery; the auxiliary power line outputs a low-power AC220V power supply to provide working power for the charging pile control unit.

[0019] The dual power automatic switching switch in the civil air defense distribution box realizes automatic switching between the electric power supply and the emergency power supply. When the electric power supply is cut off, the system will automatically switch to the emergency power supply mode without manual intervention, ensuring the continuity of power supply, enhancing the adaptability of the system in emergency situations, and improving the safety and reliability of power supply for civil air defense projects.

[0020] Electric vehicles can not only output high-power DC power through the DC interface, but also provide low-power AC220V power through the AC interface. This means that when the power is interrupted, it can not only supply power to the civil defense distribution box, but also provide backup power for the charging pile control unit or other smaller loads, increasing the power supply flexibility of the system. The system is also designed with a UPS power supply as a backup power supply. When the power supply and electric vehicles cannot be supplied normally, the UPS power supply can provide short-term power support for the charging pile control unit to ensure the normal operation of the system.

[0021] By running the monitoring unit and the on-site gateway, the system can monitor the key parameters of the electric vehicle power battery and charging pile in real time (such as temperature, discharge power, voltage, etc.). When an abnormal situation is detected, the system will issue an alarm message in time to ensure power supply safety and avoid equipment failure or overheating that affects the operation of the system.

[0022] In summary, the civil air defense emergency power supply system based on two-way interactive charging and discharging technology can charge the power battery in peacetime, and convert the DC power in the battery into AC380V AC power in wartime or emergency situations to supply power to civil air defense projects or other emergency sites. It has the advantages of efficient energy conversion, intelligent automatic switching, real-time monitoring and diversified output, providing a safe and efficient solution for emergency power supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the present invention; The reference numerals in the figure are: electric car 1, power battery 11, control unit 12, AC charge and discharge interface 13, DC charge and discharge interface 14; charging pile 2, bidirectional AC / DC conversion module 21, control unit 22, power supply unit 23, charge and discharge interface 24, power supply interface 25, discharge power interface 26; civil air defense distribution box 3, operation monitoring unit 4, field gateway 5, UPS power supply 6, electric power supply 7, special charge and discharge cable 8, distribution cable 9, wartime air intake fan 10, wartime exhaust fan 11. DETAILED DESCRIPTION

[0024] The technical solution of the present invention is described in detail below with reference to the accompanying drawings, but the protection scope of the present invention is not limited to the embodiments.

[0025] Example 1: See Figure 1 As shown, the civil air defense engineering emergency power supply system based on the two-way interactive charging and discharging technology is composed of electric vehicles 1, charging piles 2, civil air defense distribution boxes 3, UPS power supplies 6 (set as needed), power supplies 7, charging and discharging special cables 8, distribution cables 9 and other equipment. If the operation status of the equipment is to be monitored, the operation monitoring unit 4 and the field gateway 5 are added accordingly, and equipment with an intelligent control interface is selected.

[0026] The equipment involved in the emergency power supply system in the electric vehicle 1 includes a power battery 11, a control unit 12, an AC charging and discharging interface 13, and a DC charging and discharging interface 14. A dual power automatic switching switch is provided in the civil air defense distribution box 3, which can realize automatic switching between the electric power supply and the emergency power supply. When the electric power supply is cut off, it is necessary to provide power for the normal operation of the charging pile control unit 22, which can be provided by the AC220V AC power supply provided by the AC discharge port 13 of the electric vehicle or a low-power UPS power supply 6.

[0027] The operation monitoring unit 4 and the field gateway 5 are used to monitor the operation status of each unit of the system. The information of the electric vehicle and the charging pile is collected through the field gateway 5 and uploaded to the operation monitoring unit 4 to realize the monitoring of the operation status of each unit of the system, including the real-time temperature, discharge power, and remaining power of the electric vehicle power battery, the real-time temperature, output power, output power voltage, current, frequency, etc. of the charging pile, and the operation status of the field equipment, and an alarm message is issued when an abnormal equipment status is detected.

[0028] The electric vehicle 1 can be charged through the DC discharge port 14 or discharged to output a high-power (different electric vehicles have corresponding output power limits) DC power supply; through the AC charge and discharge port 13, it can be charged or discharged to output a low-power (generally 3-6KW, some electric vehicles do not support this discharge function) AC220V power supply.

[0029] The dedicated charging and discharging cable 8 integrates the functions of the input and output of the electric vehicle charging and discharging DC power supply, the output of the AC low-power AC220V power supply, and the information exchange between the electric vehicle control unit 12 and the charging pile control unit 22. When the electric vehicle 1 and the charging pile 2 are connected through the dedicated charging and discharging cable 8, the electric vehicle control unit 12 and the charging pile control unit 22 perform real-time information exchange, control the charging and discharging conversion of the power storage battery 11, and transmit the real-time temperature, discharge power, and remaining power of the power storage battery 11 to the charging pile control unit 22 through the dedicated charging and discharging cable 8. The charging pile control unit 22 can automatically switch the charging and discharging mode according to the collected power supply signal. When the power supply is normal, the charging pile 2 works in the charging mode. When the power supply is cut off, the charging pile 2 automatically switches to the discharging mode, that is, emergency power supply is provided to the outside.

[0030] In normal times, the charging pile 2 charges the power battery 11 of the electric vehicle through the power supply 7, and can also realize reverse discharge to the power grid as needed. In wartime or a specific emergency state, when the charging pile detects that the power supply is off, the system will automatically switch to the discharge mode. The charging pile will automatically convert the DC power of the power battery of the electric vehicle into an AC380V power output of corresponding power within a certain period of time (generally less than 30S) to supply power to civil air defense projects or other emergency sites.

[0031] Charging mode: The electric vehicle control unit 12 sends a charging demand signal to the charging pile control unit 22. At this time, the power supply 7 converts the AC power into DC power through the power supply interface 25 and the bidirectional AC / DC conversion module 21, and charges the power battery 11 through the charge and discharge interface 24, the dedicated charge and discharge cable 8, and the DC charge and discharge port 14.

[0032] Discharge mode (emergency power supply): The charging pile control unit 22 sends a discharge demand signal to the electric vehicle control unit 12. At this time, the power battery 11 converts the DC power supply into AC380V AC power supply through the DC charging and discharging interface 14, the dedicated charging and discharging cable 8, and the charging and discharging interface 24, and the bidirectional AC / DC conversion module 21, and outputs it to the civil defense distribution box through the discharge power supply interface 26.

[0033] As described above, although the present invention has been shown and described with reference to specific preferred embodiments, it should not be construed as limiting the present invention itself. Various changes in form and details may be made without departing from the spirit and scope of the present invention as defined in the appended claims.

Claims

1. The emergency power supply system for civil air defense projects based on two-way interactive charging and discharging technology is characterized by: include: An electric vehicle, comprising a power storage battery, an electric vehicle control unit, an AC charging and discharging interface and a DC charging and discharging interface; A charging pile, comprising a charging pile control unit, a bidirectional AC / DC conversion module, a charging and discharging interface, a power supply interface, a discharging power supply interface, and a power supply unit; Electric power supply; Civil air defense distribution box; A dedicated charging and discharging cable, used to connect the electric vehicle and the charging pile; The charging pile control unit can automatically switch the charging and discharging mode according to the signal status of the power supply, and work in the charging mode when the power supply is normal, and automatically switch to the discharging mode when the power supply is cut off; In the charging mode, the charging pile control unit obtains the charging demand signal sent by the electric vehicle control unit, and the AC power output by the power supply is converted into a DC power supply through the power supply interface of the charging pile and the bidirectional AC / DC conversion module, and then output through the charging and discharging interface, and input to the DC charging and discharging interface of the electric vehicle through the dedicated charging and discharging cable to charge the power battery; In the discharge mode, the charging pile control unit sends a discharge demand signal to the electric vehicle control unit. The power battery of the electric vehicle is output through the DC charging and discharging interface, and is input to the charging and discharging interface of the charging pile through the dedicated charging and discharging cable. The DC power supply is converted into AC380V AC power supply through the bidirectional AC / DC conversion module, and then the civil defense distribution box is powered through the discharge power supply interface.

2. The civil air defense engineering emergency power supply system based on bidirectional interactive charging and discharging technology according to claim 1 is characterized in that: The dedicated charging and discharging cable comprises: a cable body for connecting an electric vehicle and a charging pile and standardized interfaces arranged at both ends of the cable body; The cable body comprises: Power lines used to transmit high-power direct current; Signal line for transmitting collected signals; Communication lines for data communication; Auxiliary power cord for outputting AC power.

3. The civil air defense engineering emergency power supply system based on bidirectional interactive charging and discharging technology according to claim 1 is characterized in that: It also includes an operation monitoring unit and an on-site gateway; the electric vehicle control unit transmits the real-time temperature, discharge power, and remaining power of the power battery to the charging pile control unit via a dedicated charging and discharging cable; the charging pile control unit collects the real-time temperature, output power, output power voltage, current, and frequency inside the charging pile, and sends the collected information and the information transmitted by the electric vehicle control unit to the operation monitoring unit via the on-site gateway; the operation monitoring unit issues an alarm message when an abnormal equipment status is detected.

4. The civil air defense engineering emergency power supply system based on bidirectional interactive charging and discharging technology according to claim 1 is characterized in that: A dual power automatic switching switch is arranged in the civil air defense distribution box, which can realize automatic switching between electric power supply and emergency power supply.

5. The civil air defense engineering emergency power supply system based on bidirectional interactive charging and discharging technology according to claim 1 is characterized in that: The electric vehicle can be charged through a DC charging and discharging port or output a high-power DC power supply to the outside, and the electric vehicle can be charged through an AC charging and discharging port or output a low-power AC220V power supply to the outside.

6. The civil air defense engineering emergency power supply system based on bidirectional interactive charging and discharging technology according to claim 5 is characterized in that: The AC220V alternating current power output by the electric vehicle can provide power for the normal operation of the charging pile when the electric power source is cut off.

7. The civil air defense engineering emergency power supply system based on bidirectional interactive charging and discharging technology according to claim 6 is characterized in that: It also includes a UPS power supply, which is connected to the charging pile control unit through the power supply unit and is used to provide power for the normal operation of the charging pile when the electric power supply is cut off and the electric vehicle has no AC220V AC power output function.

8. The charging and discharging control method of the civil air defense engineering emergency power supply system based on the two-way interactive charging and discharging technology according to claim 1 is characterized in that: The following steps are involved: S1: The electric vehicle is connected to the charging pile through a dedicated charging and discharging cable. The charging pile control unit obtains the charging demand signal sent by the electric vehicle control unit and enters the charging mode. The power supply converts the AC power into DC power through the bidirectional AC / DC conversion module of the charging pile, and charges the power battery of the electric vehicle through the dedicated charging and discharging cable. S2: The charging pile control unit detects the current power supply status according to the power supply signal. If the power supply is normal, the charging pile control unit works in the charging mode. If the power supply is interrupted, it automatically switches to the discharging mode. S3: In the discharge mode, the charging pile control unit sends a discharge demand signal to the electric vehicle control unit. At this time, the power battery converts the electric energy in the electric vehicle power battery into AC power output through the DC charging and discharging interface, dedicated charging and discharging cable, charging and discharging interface, bidirectional AC / DC conversion module, and discharge power supply interface to provide emergency power supply to the civil air defense distribution box.

9. The charge and discharge control method according to claim 8, characterized in that: It also includes an operation monitoring unit and a field gateway; the electric vehicle control unit transmits the real-time temperature, discharge power and remaining power of the power battery to the charging pile control unit via a dedicated charging and discharging cable; the charging pile control unit collects the real-time temperature, output power, output power voltage, current and frequency inside the charging pile, and sends the information transmitted by the electric vehicle control unit to the operation monitoring unit via the field gateway; the operation monitoring unit issues an alarm message when an abnormal state is detected.

10. The charge and discharge control method according to claim 8, characterized in that: Also includes: The dual power automatic switching switch installed in the civil air defense distribution box can realize automatic switching between the main power supply and the emergency power supply; when the main power supply is cut off, the AC charging and discharging interface of the electric vehicle or the external UPS power supply can provide backup power for the charging pile control unit.

Images