Low-power charging station and charging method thereof

Abstract

The low-power charging station comprises a charging pile main body, and further comprises a direct current transfer module distribution box and a plurality of parking space groups, an outgoing line and detection module mainboard is mounted in the direct current transfer module distribution box; the outgoing line and detection module mainboard comprises a core processing module single-chip microcomputer, a detection data sending module and an outgoing line module main loop power switching module. The charging pile body is composed of direct current charging pile modules connected with a plurality of power modules in parallel or composed of a plurality of direct current charging pile modules connected in parallel and provided with only one power module. Each charging gun can charge one vehicle in the corresponding parking space group, so that one charging gun corresponds to a plurality of parking spaces, and as long as one vacant space exists in the parking space group, the vehicle needing to be charged can be driven in and inserted into the charging gun to be charged; the phenomenon that charging cannot be carried out once an oil vehicle is parked on an existing parking space with a charging pile is effectively avoided; and the manpower and time cost of facility operation can be effectively reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of charging, in particular to a low-power charging station and a charging method thereof. BACKGROUND

[0002] The charging pile is a device for providing power supply for electric vehicles (including pure electric vehicles, plug-in hybrid electric vehicles, etc.), which is equivalent to the "gas station" of electric vehicles. Its core function is to convert the alternating current of the power grid into direct current that the electric vehicle battery can receive (or directly provide suitable alternating current), so as to realize the charging of the vehicle battery. It can be fixed on the ground or wall, installed in public buildings (charging stations, shopping malls, public parking lots, etc.) and residential parking lots, and can be adjusted in voltage and current to charge various types of electric vehicles.

[0003] Problems:

[0004] Now the charging station generally has a serious problem, the oil car occupies the position; the charging spot and the supporting charging pile belong to public or private charging resources. The oil car occupies the position, which will cause the idle of the charging pile, reduce the utilization rate of the facility, and cause the inefficient allocation of social resources. According to industry statistics, the daily idle time of some public charging piles in some cities due to the occupation of oil cars can reach 3-5 hours, and the resource waste rate is more than 40%. After the new energy vehicle owner arrives at the charging station, he often cannot charge in time due to the occupation of oil cars, especially during peak hours, which may cause the situation of "one car is difficult to find", which delays the travel plan of the vehicle owner. Some new energy vehicle owners cannot charge due to the occupation of oil cars, which may cause conflicts with oil car owners. In residential areas, long-term occupation may also cause neighborhood conflicts and affect community harmony. The charging pile operator needs to invest manpower for inspection and contact, and in some cases, a dedicated person needs to be on duty, which increases the labor and time cost of facility operation. At the same time, frequent coordination of moving cars will also reduce the efficiency of operation and service. SUMMARY

[0005] The present application is to solve the above technical problems by providing a low-power charging station and a charging method thereof, which adopts a mode of one charging gun corresponding to multiple parking spaces for distribution.

[0006] To solve the above technical problems, the technical solution of the present application is:

[0007] A low-power charging station, comprising a charging pile body, a DC transfer module distribution box, and a plurality of parking space groups; the DC transfer module distribution box is internally provided with an outgoing line and detection module mainboard; the outgoing line and detection module mainboard comprises a core processing module single-chip microcomputer, a detection data sending module, and an outgoing line module main loop power switching module; the charging pile body is composed of a plurality of DC charging pile modules connected in parallel and having a plurality of power modules or a plurality of DC charging pile modules connected in parallel and having only one power module; when the charging pile body is composed of a plurality of DC charging pile modules connected in parallel and having a plurality of power modules, the plurality of power modules are respectively connected to the outgoing line and detection module mainboard; when the charging pile body is composed of a plurality of DC charging pile modules having only one power module, the plurality of DC charging pile modules are respectively connected to the outgoing line and detection module mainboard; the parking space group is composed of a plurality of adjacent parking spaces; a distribution box is arranged between the plurality of adjacent parking spaces; the distribution box is provided with a charging gun; the charging gun is connected to the outgoing line and detection module mainboard; the core processing module single-chip microcomputer is connected to the detection data sending module and the outgoing line module main loop power switching module.

[0008] The charging pile body is composed of four DC charging pile modules connected in parallel and having four 30kw power modules or four DC charging pile modules connected in parallel and having only one 30kw power module.

[0009] The DC charging pile module comprises a charging pile control mainboard, a charging pile touch display screen, a charging pile switching power supply, a charging pile intermediate relay, a charging pile molded case switch, a charging pile AC contactor, and a charging pile miniature circuit breaker; the charging pile control mainboard is connected to the charging pile intermediate relay, the charging pile touch display screen, and the charging pile switching power supply; the charging pile switching power supply is connected to the charging pile miniature circuit breaker; the charging pile molded case switch is connected to the charging pile AC contactor and an external power supply; the charging pile AC contactor is connected to the power module; when the charging pile body is composed of four DC charging pile modules connected in parallel and having four 30kw power modules, the charging pile AC contactor is respectively connected to the four 30kw power modules; when the charging pile body is composed of four DC charging pile modules connected in parallel and having only one 30kw power module, the charging pile AC contactor is connected to the 30kw power module.

[0010] The DC charging pile module is further provided with a lightning protection unit.

[0011] The power module and the outgoing line and detection module mainboard are connected to a DC fuse and a shunt; the shunt is externally connected to a DC ammeter.

[0012] The outgoing line and detection module mainboard further comprises a voltage data acquisition module, a current data acquisition module, a detection module external connection cable temperature acquisition module, and a leakage current detection module; the core processing module single-chip microcomputer is connected with the voltage data acquisition module, the current data acquisition module, the detection module external connection cable temperature acquisition module, and the leakage current detection module respectively.

[0013] The distribution box further comprises a distribution box control mainboard, a distribution box touch display screen, a distribution box intermediate relay, and a distribution box switching power supply; the distribution box control mainboard is connected with the distribution box touch display screen, the distribution box intermediate relay, the distribution box switching power supply, the charging gun, and the direct current charging pile module respectively.

[0014] The 16 groups of parking spaces are arranged longitudinally; each of the groups of parking spaces is composed of four parking spaces arranged in a rectangular matrix.

[0015] A charging method using the low-power charging station comprises the following steps:

[0016] S1, the power supply module supplies power to the outgoing line and detection module mainboard, and the outgoing line and detection module mainboard distributes the power to each charging gun of the distribution box; since the power supply module is limited, the total power supply is limited, and the number of charging guns that can be actually powered is less than the total number of charging guns; each charging gun can only supply power to a vehicle in one of the parking spaces in the group of parking spaces;

[0017] S2, a vehicle that needs to be charged is parked in one of the parking spaces and inserted into the charging gun, and the outgoing line and detection module mainboard detects whether the number of charging guns that can be actually powered has reached the upper limit; if not, the charging gun is directly powered to charge the vehicle; if so, the charging gun is queued until the charging gun in front of it is charged and then the charging gun is powered;

[0018] S3, the direct current charging pile module (9) is connected with the owner's mobile phone app and sends real-time information to the owner's mobile phone.

[0019] In the S1 step, the number of charging guns that can be actually powered is 4, and the total number of charging guns is 16.

[0020] The technical effects achieved by the application are as follows: each charging gun can charge one vehicle in a corresponding parking space group, so one charging gun corresponds to multiple parking spaces (specifically, each parking space group is composed of four parking spaces arranged in a rectangular array, that is, one charging gun corresponds to four parking spaces), as long as there is an empty parking space in the parking space group, the vehicle needing to be charged can drive in and plug in the charging gun to be charged, effectively avoiding the phenomenon that the existing charging pile cannot charge once an oil vehicle is parked; and the power supply is distributed by the outgoing line and detection module mainboard, when the number of charging guns that can actually supply power reaches the upper limit, the vehicle needing to be charged can be parked on other idle parking space groups and plugged in the charging gun to be charged in an orderly manner, avoiding others from fighting for it; the above method can effectively reduce the labor and time cost of facility operation. BRIEF DESCRIPTION OF DRAWINGS

[0021] The application will be further described in detail below with reference to the drawings and specific embodiments:

[0022] Figure 1 is a structural schematic diagram of a low-power charging station of the application (when the charging pile main body is composed of multiple DC charging pile module groups in parallel with multiple power modules);

[0023] Figure 2 is Figure 1 a structural schematic diagram of a DC charging pile module of

[0024] Figure 3 is a structural schematic diagram of a low-power charging station of the application (when the charging pile main body is composed of multiple DC charging pile modules each having only one power module);

[0025] Figure 4 is Figure 3 a structural schematic diagram of a DC charging pile module of

[0026] Figure 5 is Figure 1 and Figure 3 a structural schematic diagram of an outgoing line and detection module mainboard of

[0027] Figure 6 is Figure 1 and Figure 3 a structural schematic diagram of a distribution box of

[0028] Figure 7 is a structural schematic diagram of a parking space group. DETAILED DESCRIPTION

[0029] The application will be further described in detail below with reference to the drawings and specific embodiments.

[0030] Reference is made to Figures 1 to 7 .

[0031] A low-power charging station, comprising a charging pile body, further comprising a direct-current transfer module distribution box 1 and a plurality of groups of parking spaces; specifically, the 16 groups of parking spaces are arranged longitudinally (for reference Figure 7 );The outgoing line and detection module mainboard 2 is installed in the direct-current transfer module distribution box 1;Specifically, the outgoing line and detection module mainboard 2 comprises a core processing module single-chip microcomputer 4, a detection data sending module 5 and an outgoing line module main loop power switching module 6;The core processing module single-chip microcomputer 4 is connected with the detection data sending module 5 and the outgoing line module main loop power switching module 6 respectively;Specifically, the outgoing line and detection module mainboard 2 further comprises a voltage data acquisition module 41, a current data acquisition module 42, a detection module external connection cable temperature acquisition module 43 and a leakage current detection module 44;The core processing module single-chip microcomputer 4 is connected with the voltage data acquisition module 41, the current data acquisition module 42, the detection module external connection cable temperature acquisition module 43 and the leakage current detection module 44 respectively.

[0032] The charging pile body is composed of a plurality of direct-current charging pile modules 9 connected in parallel with a plurality of power modules 8 or a plurality of direct-current charging pile modules 9 connected in parallel and each having only one power module 8;When the charging pile body is composed of a plurality of direct-current charging pile modules 9 connected in parallel with a plurality of power modules 8, the plurality of power modules 8 are connected to the outgoing line and detection module mainboard 2 respectively;When the charging pile body is composed of a plurality of direct-current charging pile modules 9 each having only one power module 8, the plurality of direct-current charging pile modules 9 are connected to the outgoing line and detection module mainboard 2 respectively;Specifically, the charging pile body is composed of four direct-current charging pile modules 9 connected in parallel with four 30kw power modules 8 or four direct-current charging pile modules 9 connected in parallel and each having only one 30kw power module 8.

[0033] According to the new policies introduced in Shenzhen, Hangzhou and other places, such as "Shenzhen New Energy Vehicle Charging and Battery Swapping Facility Management Method", it is clearly stipulated that fast charging facilities should not be used in charging areas, the maximum output power of charging equipment should not exceed 30kW, and small-power non-vehicle-mounted chargers should be used;Charging facilities should be arranged on the first or second underground floor, and charging piles are strictly prohibited in the fourth floor and below;According to the above policy, the charging pile body is composed of four direct-current charging pile modules 9 connected in parallel and each having only one 30kw power module 8, so that the single charging pile does not exceed 30kw, and at the same time, a plurality of charging spaces can be supplied for charging.

[0034] The direct current charging pile module 9 comprises a charging pile control mainboard 21, a charging pile touch display screen 22, a charging pile switching power supply 23, a charging pile intermediate relay 24, a charging pile plastic shell switch 25, a charging pile AC contactor 26 and a charging pile miniature circuit breaker 27; the charging pile control mainboard 21 is connected with the charging pile intermediate relay 24, the charging pile touch display screen 22 and the charging pile switching power supply 23 respectively; the charging pile switching power supply 23 is connected with the charging pile miniature circuit breaker 27, the charging pile plastic shell switch 25 is externally connected with a power supply, and the charging pile plastic shell switch 25 is connected with the charging pile AC contactor 26; the charging pile AC contactor 26 is connected with the power supply module 8; when the charging pile main body is composed of four 30kw power supply modules 8 in parallel, the charging pile AC contactor 26 is connected with the four 30kw power supply modules 8 respectively; when the charging pile main body is composed of four direct current charging pile modules 9 in parallel and each of which has only one 30kw power supply module 8, the charging pile AC contactor 26 is connected with the 30kw power supply module 8; specifically, the direct current charging pile module 9 is further provided with a lightning protection unit 28, and a direct current fuse 31 and a shunt 32 are connected between the power supply module 8 and the outgoing line and detection module mainboard 2, and the shunt 32 is externally connected with a direct current meter 33.

[0035] The parking space group is composed of a plurality of adjacent parking spaces 11, and a distribution box 12 is arranged between the plurality of adjacent parking spaces 11; specifically, each parking space group is composed of four parking spaces 11 arranged in a rectangular array, and the distribution box 12 is located in the middle of the four parking spaces 11; the distribution box 12 is provided with a charging gun 13, and the charging gun 13 is connected with the outgoing line and detection module mainboard 2; specifically, the distribution box 12 is further provided with a distribution box control mainboard 51, a distribution box touch display screen 52, a distribution box intermediate relay 53 and a distribution box switching power supply 54, and the distribution box control mainboard 51 is connected with the distribution box touch display screen 52, the distribution box intermediate relay 53, the distribution box switching power supply 54, the charging gun 13 and the direct current charging pile module 9 respectively.

[0036] A charging method using the above low-power charging station, comprising the following steps:

[0037] S1, the charging gun 13 of each distribution box 12 is powered by the power supply module 8 and the outgoing line and detection module mainboard 2, and the total power supply is limited, so the total power supply is limited, and the number of charging guns 13 that can actually be powered is less than the total number of charging guns 13; each charging gun 13 can only power the vehicle in one of the parking space groups; specifically, the number of charging guns 13 that can actually be powered by the total power supply is 4, the total number of charging guns 13 is 16, and the 16 charging guns 13 are arranged on 16 parking space groups.

[0038] S2, the vehicle needing charging stops in one of the parking spaces in the parking space group and inserts the charging gun 13, which is detected by the outgoing line and detection module mainboard 2, when the number of charging guns 13 actually available for power supply is not full, the charging gun 13 is directly powered to charge the vehicle in the parking space; when the number of charging guns 13 actually available for power supply has reached the upper limit, the charging gun 13 is queued until the charging guns 13 in front of the charging gun 13 are all charged, and then the charging gun 13 is powered;

[0039] S3, the DC charging pile module 9 is connected with the owner's mobile phone app and sends real-time information to the owner's mobile phone.

[0040] The outgoing line and detection module mainboard 2 of the application can support 16-way maximum current voltage DC1000V250A charging pile circuit switching, and can collect the voltage and current of the DC input and output in the power replacement cabinet main control board through the voltage data acquisition module 41 and the current data acquisition module 42, and can collect the temperature of the 16-way input and output cables and the leakage current through the external connection cable temperature acquisition module 43 and the leakage current detection module 44, and send the collected data to the charging pile control mainboard 21 through the detection data sending module 5, and has a safety isolation function and a leakage current stop charging pile function; by increasing the outgoing line and detection module mainboard 2 and adjusting the corresponding electrical equipment, one 120kw charging pile can cover 64 charging parking spaces (the on-site installation method and the number of power modules 8 can be adjusted according to demand), and four vehicles (corresponding to the number of power modules 8) can be charged simultaneously during normal charging; when there is a shortage, the owner can first insert the charging gun 13, and the charging gun 13 reports the corresponding information to the charging pile control mainboard 21, and then performs queuing processing, and the owner can know when the previous vehicle is charged and the position of the charging gun 13 through communication, and the owner can check the corresponding information on the charging app.

[0041] Each charging gun 13 of the application can charge one vehicle in the corresponding parking space group, so one charging gun 13 corresponds to four parking spaces 11, as long as there is an empty space in the parking space group, the vehicle needing charging can drive in and insert the charging gun 13 to charge, which effectively avoids the phenomenon that the existing charging pile cannot charge once an oil vehicle is parked; and the application distributes power by the outgoing line and detection module mainboard 2, when the number of charging guns 13 actually available for power supply has reached the upper limit (i.e. four vehicles are charging), the vehicle needing charging can stop in the parking space 11 of other idle parking space groups and insert the charging gun 13 to orderly queue, avoiding others from fighting; the above method can effectively reduce the labor and time cost of facility operation.

[0042] The charging pile touch display screen 22 and the distribution box touch display screen 52 both adopt a 7-inch touch display screen, on which the functions of operating the charging pile, monitoring the operation of the charging pile, and displaying alarm information of the charging pile can be realized; the DC fuse 31 selects a fuse corresponding to the current, which can realize the function of cutting off the current of the overall output circuit when the rated current is exceeded, and protecting the components; the charging pile AC contactor 26 selects an AC contactor corresponding to the current, and the charging pile control mainboard 21 can be used to control the charging pile AC contactor 26, so as to control the on-off of the module, cut off the module current in standby mode, and reduce power consumption; the lightning protection unit 28 is a surge protector, and a corresponding surge protector and surge protector protection device are used to protect the charging pile main body from lightning protection and incoming line cabinet surge protection; the power module 8 converts the power of the AC power grid (or a specific DC power supply) into DC power that meets the charging requirements of the electric vehicle battery, while ensuring the efficiency, stability and safety of the conversion process; the charging pile plastic shell switch 25 quickly cuts off the power supply when an overload, short circuit, undervoltage or other fault occurs in the circuit, prevents the circuit equipment from being damaged or causing a safety accident, and can also be used as a circuit on-off control switch under normal circumstances; different power charging piles use different plastic shell circuit breakers; the DC meter 33 uses microelectronic technology to measure DC power, and the DC meter 33 is a high-tech product manufactured by using international advanced ultra-low power large-scale integrated circuit technology and SMT process, and the core chip uses a self-developed 32-bit high-precision ADC chip; the DC meter 33 has the functions of liquid crystal display, power measurement, clock, RS485 communication, electric pulse and second signal output, instantaneous data measurement and monitoring, and is suitable for DC power measurement; the technical indicators of the DC meter 33 meet the requirements of the GB / T33708-2017 “Static DC Power Meter” standard, and the 1-way RS485 interface supports the DL / T645-2007 protocol and the object-oriented DL / T698.45 protocol; the accuracy level of the DC meter 33 is level 1, which meets the mainstream market rules.

[0043] The distribution box 12 has the functions of communicating with the vehicle BMS, communicating with all charging pile control mainboards 21 and outgoing line and detection module mainboards 2, collecting and exchanging corresponding data, controlling the switching of the outgoing line and detection module mainboard 2, and controlling the charging process of the charging pile control mainboard 21; the corresponding charging data, platform issued information and charging pile control mainboard 21 forwarded information can be displayed on the distribution box touch display screen 52.

Claims

1. A low power charging station comprising a charging post body, characterized in that: Also include direct current transfer module distribution box (1) and a plurality of parking space group; The direct current transfer module distribution box (1) is installed with outgoing line and detection module mainboard (2);The outgoing line and detection module mainboard (2) include core processing module single-chip microcomputer (4), detection data sending module (5) and outgoing line module main loop power switching module (6);The charging pile main body is the direct current charging pile module (9) that a plurality of power modules (8) are connected in parallel or by a plurality of parallel and only have a power module (8) direct current charging pile module (9) composition;When the charging pile main body is the direct current charging pile module (9) that a plurality of power modules (8) are connected in parallel, a plurality of power modules (8) are connected with outgoing line and detection module mainboard (2) respectively;When the charging pile main body is the direct current charging pile module (9) that a plurality of only have a power module (8) is connected, a plurality of the direct current charging pile module (9) is connected with outgoing line and detection module mainboard (2) respectively;The parking space group is composed of a plurality of adjacent parking spaces (11);A plurality of the adjacent parking spaces (11) are provided with distribution box (12);The distribution box (12) is all provided with charging gun (13);The charging gun (13) is all connected with outgoing line and detection module mainboard (2);The core processing module single-chip microcomputer (4) is connected with detection data sending module (5) and outgoing line module main loop power switching module (6) respectively.

2. The low power charging station of claim 1, wherein: The charging pile main body is the direct current charging pile module (9) that four 30kw power modules (8) are connected in parallel or by four parallel and only have a 30kw power module (8) direct current charging pile module (9) composition.

3. A low power charging station as claimed in claim 2, characterized in that: The direct current charging pile module (9) includes charging pile control mainboard (21), charging pile touch display screen (22), charging pile switching power supply (23), charging pile intermediate relay (24), charging pile plastic shell switch (25), charging pile ac contactor (26) and charging pile micro circuit breaker (27);The charging pile control mainboard (21) is connected with charging pile intermediate relay (24), charging pile touch display screen (22) and charging pile switching power supply (23) respectively;The charging pile switching power supply (23) is connected with charging pile micro circuit breaker (27);The charging pile plastic shell switch (25) is connected with charging pile ac contactor (26) with external power supply;The charging pile ac contactor (26) is connected with power module (8);When the charging pile main body is the direct current charging pile module (9) that four 30kw power modules (8) are connected in parallel, the charging pile ac contactor (26) is connected with four 30kw power modules (8) respectively;When the charging pile main body is the direct current charging pile module (9) that four parallel and only have a 30kw power module (8) is connected, the charging pile ac contactor (26) is connected with the 30kw power module (8).

4. The low power charging station of claim 3, wherein: The direct current charging pile module (9) is further provided with lightning protection unit (28).

5. The low power charging station of claim 3, wherein: The power module (8) is connected with the outgoing line and detection module mainboard (2) through a DC fuse (31) and a shunt (32); the shunt (32) is externally connected with a DC ammeter (33).

6. The low power charging station of claim 3, wherein: The outgoing line and detection module mainboard (2) further comprises a voltage data acquisition module (41), a current data acquisition module (42), a detection module external connection cable temperature acquisition module (43) and a leakage current detection module (44); the core processing module single-chip microcomputer (4) is connected with the voltage data acquisition module (41), the current data acquisition module (42), the detection module external connection cable temperature acquisition module (43) and the leakage current detection module (44) respectively.

7. The low power charging station of claim 1, wherein: The distribution box (12) is further provided with a distribution box control mainboard (51), a distribution box touch display screen (52), a distribution box intermediate relay (53) and a distribution box switching power supply (54); the distribution box control mainboard (51) is connected with the distribution box touch display screen (52), the distribution box intermediate relay (53), the distribution box switching power supply (54), the charging gun (13) and the DC charging pile module (9) respectively.

8. The low power charging station of claim 1, wherein: The parking space groups are 16 groups in total; the 16 groups of parking space groups are arranged longitudinally; each of the parking space groups is composed of four parking spaces (11) arranged in a rectangular matrix.

9. A charging method using the low-power charging station according to any one of claims 1 to 7, characterized by, The method comprises the following steps: S1, the outgoing line and detection module mainboard (2) is powered by the power module (8) and is distributed to each charging gun (13) of the distribution box (12) for power supply; since the power module (8) is limited, the total power supply is limited, and the number of charging guns (13) that can actually be powered is less than the total number of actual charging guns (13); each charging gun (13) can only power the vehicle on one of the parking space groups (11); S2, the vehicle needing to be charged is parked in one of the parking space groups and inserted into the charging gun (13), and the outgoing line and detection module mainboard (2) detects whether the number of charging guns (13) that can actually be powered reaches the upper limit; if not, the charging gun (13) is directly powered to charge the vehicle; if so, the charging gun (13) is queued until the charging guns (13) in front of the charging gun (13) are all charged, and then the charging gun (13) is powered; S3, the DC charging pile module (9) is connected with the vehicle owner's mobile phone app and sends real-time information to the vehicle owner's mobile phone.

10. The charging method of a low-power charging station according to claim 9, characterized in that: In the S1 step, the number of charging guns (13) that can actually be powered is 4; the total number of actual charging guns (13) is 16.

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