A charging station suitable for multi-space low-power

Abstract

A kind of be suitable for multi-space low-power charging station, including multiple groups of charging pile group, power replacement cabinet control mainboard and power replacement cabinet power switching main control board;The charging pile group includes two groups of power supply, charging pile A gun and charging pile B gun;Two groups of the power supply are A group power module and B group power module respectively;The A group power module is connected with charging pile A gun, B group power module is connected with charging pile B gun;The charging pile A gun and charging pile B gun are connected with power replacement cabinet power switching main control board respectively;The power replacement cabinet power switching main control board is connected with power replacement cabinet control mainboard.The utility model increases power replacement cabinet control mainboard and power replacement cabinet power switching main control board, to increase the power adaptability of entire charging station charging pile, reduce idle charging pile, ensure maximization utilization charging station;And monitor the operation data of entire charging station, guarantee the safety of charging station.

Description

Technical Field

[0001] This utility model relates to the field of charging technology, specifically to a charging station suitable for low power charging in multiple parking spaces. Background Technology

[0002] Charging piles are devices that provide electrical energy to electric vehicles (including pure electric vehicles, plug-in hybrid electric vehicles, etc.), essentially acting as "gas stations" for electric vehicles. Their core function is to convert AC power from the power grid into DC power that can be received by the electric vehicle's battery (or directly provide compatible AC power) to charge the vehicle's battery. They can be fixed to the ground or walls and installed in public buildings (charging stations, shopping malls, public parking lots, etc.) and residential parking lots, and can charge various models of electric vehicles by adjusting the voltage and current.

[0003] Existing problems:

[0004] 1. In most DC charging stations on the market, integrated DC charging piles are still the most common. For example, a DC charging station may have 8 integrated DC dual-gun 120kW charging piles:

[0005] With the development of the times, the charging power of electric vehicles is getting higher and higher. A large number of DC charging pile stations have low actual utilization and insufficient actual output power due to site conditions, proximity to exits or other reasons. For example, the integrated DC dual-gun 120kW charging piles numbered 1, 2, 3, and 4 are frequently used by drivers because they are close to the exit or convenient for parking, resulting in a high number of charging times. Other charging piles are not used as frequently due to inconvenient parking, resulting in frequent idleness. Due to the electrical principle and wiring of the integrated DC dual-gun charging pile, only one charging pile can call the module of one charging pile, and it is impossible to call the modules of other charging piles, thus failing to maximize charging power and efficiency.

[0006] 2. Existing charging piles are generally powered by the State Grid. They are charged by discharging through transformer substations. These transformer substations usually have a rated power. When the actual output power of the transformer substation exceeds the rated power for a period of time, the transformer substation is prone to damage. The output power of all charging piles can be collected by the power replacement control motherboard in the power replacement cabinet, and the output power of the charging piles can be controlled to ensure that the output power of the charging piles is within the safe limit. Utility Model Content

[0007] The present invention aims to solve the above-mentioned technical problems by providing a charging station suitable for low power consumption in multi-parking spaces. This charging station and its charging method can make full use of the power of idle charging piles.

[0008] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0009] A charging station suitable for low-power charging in multiple parking spaces includes multiple sets of charging piles, a power exchange cabinet control motherboard, and a power exchange cabinet power switching main control board. Each charging pile set includes two power supplies, a charging pile A gun, and a charging pile B gun. The two power supplies are a power supply module A and a power supply module B, respectively. The power supply module A is connected to the charging pile A gun, and the power supply module B is connected to the charging pile B gun. The charging pile A gun and the charging pile B gun are respectively connected to the power exchange cabinet power switching main control board. The power exchange cabinet power switching main control board is connected to the power exchange cabinet control motherboard.

[0010] The main control board for power switching in the power replacement cabinet includes a main circuit power switching module, a voltage data acquisition module, a current data acquisition module, a data transmission module, a core processing module microcontroller, and a power input terminal. The core processing module microcontroller is connected to the main circuit power switching module, the voltage data acquisition module, the current data acquisition module, and the data transmission module, respectively.

[0011] The power switching main control board of the power replacement cabinet also includes a cable temperature sensor and a leakage current sensor; the cable temperature sensor and the leakage current sensor are respectively connected to the microcontroller of the core processing module.

[0012] The power replacement cabinet control motherboard includes a power replacement cabinet control motherboard data exchange module, a relay output port, a signal input port, a power input port, a switching power supply, and a miniature circuit breaker. The power replacement cabinet control motherboard data exchange module is connected to the power replacement cabinet data transmission module, and is also connected to the data exchange port of charging pile A gun and the data port of charging pile B gun. Therefore, the power input terminal is connected to the switching power supply and the power input port. The switching power supply is connected to the miniature circuit breaker.

[0013] The power replacement cabinet control mainboard also includes a temperature sensor, a fire alarm device, a smoke sensor, an anti-tipping switch, and a water immersion sensor; the temperature sensor, fire alarm device, smoke sensor, anti-tipping switch, and water immersion sensor are all connected to the signal input port.

[0014] The power replacement cabinet control main board also includes a DC fan and an intermediate relay; the relay output ports are respectively connected to the DC fan and the intermediate relay; the DC fan is also connected to the power input terminal.

[0015] The technical effects that this utility model can achieve are: in addition to realizing all the original functions of the charging pile, by adjusting the electrical components and adding the power replacement cabinet control motherboard and the power replacement cabinet power switching main control board, the power adaptability of the entire charging station charging pile is increased, the number of idle charging piles is reduced, and the maximum utilization of the charging station is ensured; and the operation data of the entire charging station is monitored to ensure the safety of the charging station. Attached Figure Description

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0017] Figure 1 This is a structural schematic diagram of the charging pile assembly of this utility model;

[0018] Figure 2 This is a schematic diagram showing the connection between the charging pile group, the power replacement cabinet control motherboard, and the power replacement cabinet power switching main control board. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings.

[0020] See Figures 1 to 2 .

[0021] A charging station suitable for low power charging in multiple parking spaces includes multiple sets of charging piles, a power exchange cabinet control motherboard 22, and a power exchange cabinet power switching main control board 21. Each charging pile set includes two power supplies, a charging pile A gun, and a charging pile B gun. The two power supplies are A power module 1 and B power module 2, respectively. A power module 1 is connected to the charging pile A gun, and B power module 2 is connected to the charging pile B gun. The charging pile A gun and the charging pile B gun are respectively connected to the power exchange cabinet power switching main control board 21, and the power exchange cabinet power switching main control board 21 is connected to the power exchange cabinet control motherboard 22.

[0022] Specifically, the power switching main control board 21 of the power replacement cabinet includes a power switching module 11 for the main circuit of the power replacement cabinet, a voltage data acquisition module 12 for the power replacement cabinet, a current data acquisition module 13 for the power replacement cabinet, a data transmission module 14 for the power replacement cabinet, a microcontroller 15 for the core processing module, and a power input terminal 17. The microcontroller 15 for the core processing module is connected to the power switching module 11 for the main circuit of the power replacement cabinet, the voltage data acquisition module 12 for the power replacement cabinet, the current data acquisition module 13 for the power replacement cabinet, and the data transmission module 14 for the power replacement cabinet. The power switching main control board 21 of the power replacement cabinet also includes a cable temperature sensor 16 and a leakage current sensor 18. The cable temperature sensor 16 and the leakage current sensor 18 are connected to the microcontroller 15 for the core processing module.

[0023] The power replacement cabinet control motherboard 22 includes a power replacement cabinet control motherboard data exchange module 31, a relay output port 32, a signal input port 33, a power input port 34, a switching power supply 35, and a miniature circuit breaker 36. The power replacement cabinet control motherboard data exchange module 31 is connected to the power replacement cabinet data transmission module 14, and the power replacement cabinet control motherboard data exchange module 31 is connected to the data exchange port of charging pile A gun and the data port of charging pile B gun respectively. Therefore, the power input terminal 17 is connected to the switching power supply 35 and the power input port 34 respectively, and the switching power supply 35 is connected to the miniature circuit breaker 36.

[0024] This utility model, as a preferred embodiment, generally includes eight groups of charging piles. The power exchange cabinet control motherboard data exchange module 31 exchanges data with the control motherboards of all charging pile A guns and all charging pile B guns to obtain information on charging piles requiring additional power and those that are idle. Furthermore, the core processing module, a microcontroller 15, controls the power switching module 11 of the power exchange cabinet's main circuit to connect the charging piles requiring additional power with those that are idle, and to transmit current, thereby reducing the number of idle charging piles and maximizing the utilization of the charging station. This utility model also includes cable temperature sensors 16 and leakage current sensors 18 to monitor the cable temperature and leakage current of all charging pile A guns and all charging pile B guns. The power exchange cabinet voltage data acquisition module 12 and power exchange cabinet current data acquisition module 13 are used to monitor the voltage and current of the control motherboards of all charging pile A guns and all charging pile B guns in real time, ensuring the safe operation of the entire charging station.

[0025] The power replacement cabinet control main board 22 also includes a temperature sensor, a fire alarm device, a smoke sensor, an anti-tipping switch, and a water immersion sensor; the temperature sensor, fire alarm device, smoke sensor, anti-tipping switch, and water immersion sensor are all connected to the signal input port 33; the power replacement cabinet control main board 22 also includes a DC fan 37 and an intermediate relay 38; the relay output port 32 is connected to the DC fan 37 and the intermediate relay 38 respectively, and the DC fan 37 is also connected to the power input terminal 17; this utility model uses the DC fan 37 to dissipate heat from the power replacement cabinet, and is equipped with a temperature sensor, a fire alarm device, a smoke sensor, an anti-tipping switch, and a water immersion sensor for monitoring. The temperature sensor monitors the temperature of the power replacement cabinet, the smoke sensor monitors whether smoke appears inside the power replacement cabinet, and when smoke appears, the fire alarm device will sound an alarm; the anti-tipping switch mainly cuts off the power when the equipment is tilted to prevent accidents, and the water immersion sensor checks whether water is leaking inside the power replacement cabinet. Through the above monitoring, the normal operation and safety of the power replacement cabinet are ensured.

[0026] The charging method of this utility model:

[0027] Includes the following steps:

[0028] S1, set up 8 charging pile groups. Each charging pile group consists of two power supplies, charging pile A gun and charging pile B gun. The two power supplies are A power module 1 and B power module 2. Under normal circumstances, A power module 1 supplies power to charging pile A gun and B power module 2 supplies power to charging pile B gun. The rated power of A power module 1 and B power module 2 is the same.

[0029] S2, through the power replacement cabinet control motherboard 22, consults with the control motherboards of all charging pile A guns and all charging pile B guns to obtain information on idle charging piles and charging piles that are currently charging.

[0030] S3. Consult the charging piles that are currently charging again to obtain information on charging piles requiring additional power from all charging piles currently charging. When the charging pile requiring additional power charges the vehicle, the actual power demand of the vehicle being charged is greater than the rated power of the power supply. After collecting the information, the power exchange cabinet control motherboard 22 controls the control motherboards of the charging piles requiring additional power and the idle charging piles. The vehicle BMS data is collected by the control motherboard of the charging pile requiring additional power and sent to the corresponding required data to the power exchange cabinet control motherboard 22. Then, the power exchange cabinet control motherboard 22 first sends the corresponding data to the control motherboard of the idle charging pile, and then sends the control logic data to the power switching main control board 21 of the power exchange cabinet. After collecting the corresponding data, the power exchange cabinet control motherboard 22 and the power switching main control board 21 of the power exchange cabinet perform data transmission control and data logic closed-loop control. Finally, the hardware controls the charging piles requiring additional power and the idle charging piles to connect the circuit and transmit current.

[0031] This invention employs the above-mentioned charging method, which can effectively utilize the power of idle charging piles, reduce the number of idle charging piles, and ensure maximum utilization of charging stations.

[0032] To ensure the safety of the entire charging station, this utility model also includes the following steps:

[0033] S4. During power exchange, the main control board 21 of the power exchange cabinet will collect the voltage, current, leakage current and temperature information of the charging piles that require additional power and the idle charging piles, and send them to the main control board 22 of the power exchange cabinet. The main control board 22 of the power exchange cabinet will monitor in real time to avoid unexpected situations and ensure the safety of DC output current exchange.

[0034] As a preferred option, in step S3, it is necessary to summarize the operation of other charging pile A guns and charging pile B guns that are charging. Additional power charging piles should prioritize requesting power from idle charging piles located in the same charging pile group. If both charging pile A guns and charging pile B guns in the same charging pile group are in a charging state, an application is initiated to the power exchange cabinet control board 22. When there are idle charging piles in other charging pile groups, the power exchange cabinet control board 22 will adjust the power of the idle charging piles. This operating logic follows a premise: to ensure the power output of the corresponding gun to a certain extent.

[0035] To ensure that the total output power of the charging piles in the charging station remains within the safety limits of the transformer substation, when the control boards of all charging pile A guns and charging pile B guns are in charging mode, they send real-time output power to the power exchange cabinet control board 22. The transformer substation safety limit strategy of the power exchange cabinet control board 22 controls the real-time output power of all charging pile A guns and charging pile B guns. If the total output power of charging pile A guns and charging pile B guns is within the safety limits of the transformer substation, no safety power limit is applied. If the total output power of charging pile A guns and charging pile B guns is not within the safety limits of the transformer substation, the power exchange cabinet control board 22 sends a power reduction command to the control boards of all charging pile A guns and charging pile B guns, reducing the power according to the percentage exceeding the safety limits of the transformer substation.

[0036] The principle of the overall solution is as follows: In addition to realizing all the original functions of the charging pile, the power adaptability of the entire charging station's charging piles is increased by adjusting electrical components and adding the power replacement cabinet control motherboard 22 and the power replacement cabinet power switching main control board 21; the number of idle charging piles is reduced, ensuring maximum utilization of the charging station, and monitoring the operating data of the entire charging station to ensure its safety; the overall solution realizes the function of monitoring the safety of the entire charging station and the power dispatching function when there are idle charging piles in the station, so that when the charging demand of the vehicle exceeds the actual output power of the corresponding charging pile, power dispatching is performed; it provides a solution for previously established multi-charging stations, solving the problem of insufficient power of low-power charging piles in the charging station.

Claims

1. A charging station suitable for multiple parking spaces and low power consumption, characterized in that: It includes multiple sets of charging pile groups, a power replacement cabinet control motherboard (22), and a power replacement cabinet power switching main control board (21); the charging pile group includes two sets of power supplies, a charging pile A gun and a charging pile B gun; the two sets of power supplies are A set power module (1) and B set power module (2); the A set power module (1) is connected to the charging pile A gun, and the B set power module (2) is connected to the charging pile B gun; the charging pile A gun and the charging pile B gun are respectively connected to the power replacement cabinet power switching main control board (21); the power replacement cabinet power switching main control board (21) is connected to the power replacement cabinet control motherboard (22).

2. A charging station suitable for low power consumption in multiple parking spaces according to claim 1, characterized in that: The main control board (21) for power switching of the power replacement cabinet includes a main circuit power switching module (11), a voltage data acquisition module (12), a current data acquisition module (13), a data transmission module (14), a core processing module microcontroller (15), and a power input terminal (17). The core processing module microcontroller (15) is connected to the main circuit power switching module (11), the voltage data acquisition module (12), the current data acquisition module (13), and the data transmission module (14) of the power replacement cabinet.

3. A charging station suitable for multiple parking spaces and low power consumption according to claim 2, characterized in that: The power switching main control board (21) of the power replacement cabinet also includes a cable temperature sensor (16) and a leakage current sensor (18); the cable temperature sensor (16) and the leakage current sensor (18) are respectively connected to the core processing module microcontroller (15).

4. A charging station suitable for low-power multi-parking spaces according to claim 3, characterized in that: The power replacement cabinet control motherboard (22) includes a power replacement cabinet control motherboard data exchange module (31), a relay output port (32), a signal input port (33), a power input port (34), a switching power supply (35), and a miniature circuit breaker (36). The power replacement cabinet control motherboard data exchange module (31) is connected to the power replacement cabinet data transmission module (14), and the power replacement cabinet control motherboard data exchange module (31) is connected to the data exchange port of charging pile A gun and the data port of charging pile B gun respectively. Therefore, the power input terminal (17) is connected to the switching power supply (35) and the power input port (34) respectively. The switching power supply (35) is connected to the miniature circuit breaker (36).

5. A charging station suitable for low power consumption in multiple parking spaces according to claim 4, characterized in that: The power replacement cabinet control motherboard (22) also includes a temperature sensor, a fire alarm device, a smoke sensor, an anti-tipping switch, and a water immersion sensor; the temperature sensor, the fire alarm device, the smoke sensor, the anti-tipping switch, and the water immersion sensor are all connected to the signal input port (33).

6. A charging station suitable for multi-parking spaces and low power consumption according to claim 4, characterized in that: The power replacement cabinet control main board (22) also includes a DC fan (37) and an intermediate relay (38); the relay output port (32) is connected to the DC fan (37) and the intermediate relay (38) respectively; the DC fan (37) is also connected to the power input terminal (17).

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