A charging pile mobile installation component and charging pile

Abstract

The present invention discloses a charging pile mobile installation component, including a first power conversion interface and a first control module and an AC / DC conversion module electrically connected to the first power conversion interface respectively, and the first control module and the AC / DC conversion module are arranged in a first housing. The present invention compactly arranges the high-cost first control module and the AC / DC conversion module in the first housing, has a simple structure, and the mobile installation component is small in size, which is easy to carry; when charging is needed, it only needs to be connected to the AC input module for DC fast charging, and the AC input module has a simple structure and low cost, which is suitable for large-scale promotion and construction, and can solve the problem of high cost and low utilization rate of DC fast charging piles, which leads to difficulty in recovering the investment in charging pile construction.

Description

Technical Field

[0001] The present invention relates to the technical field of charging equipment, and in particular to a charging pile mobile installation component and a charging pile. Background Art

[0002] The increasing shortage of fossil energy and the fluctuation of the world fossil energy price system have aggravated the energy pressure in some countries. In addition, the use of fossil energy as primary energy has led to continuous deterioration of the environment, and the pressure to improve the environment is enormous.

[0003] New energy electric vehicles have developed rapidly due to their convenience, safety and intelligence. Electric vehicle charging piles are the charging infrastructure for new energy vehicles. In order to promote energy transformation, the country has introduced a large number of favorable policies to stimulate people to buy electric vehicles. The number of electric vehicles has exceeded the number of built electric vehicle charging piles. New energy vehicle owners have difficulty charging, and the first batch of new energy taxi drivers also have difficulty persisting. Behind the development of the electric vehicle charging pile market is the promotion of new energy vehicles. The two promote each other and gradually change people's travel habits.

[0004] There are currently two modes of construction of electric vehicle charging piles:

[0005] The construction of AC slow charging piles is based on 220V single-phase power supply. 3.3kW-7kW AC slow charging piles are built in parking lots. However, the charging time is generally more than 8 hours. Due to the long charging time, it is difficult to meet the charging requirements of electric vehicles and is gradually facing elimination.

[0006] DC fast charging piles are built based on 380V three-phase power supply. 30-120kW DC fast charging piles are built in parking lots, and the charging time is 30-60 minutes. However, DC fast charging piles are expensive and require a certain amount of space, and some parking spaces are difficult to meet the requirements; the current insufficient number of electric vehicles has led to extremely low utilization of charging piles. According to statistics, more than 80% of charging stations have a utilization rate of less than 5%, and even a proportion of charging piles have a utilization rate of 0%, which makes it difficult to recover the investment in charging pile construction; DC charging piles have a large power and will put a certain amount of pressure on the power grid, so the protection of the power grid needs to be strengthened during the construction process. Summary of the invention

[0007] In view of the shortcomings of the prior art, one of the objects of the present invention is to provide a mobile installation assembly for a charging pile, so as to solve the problem of portability of the charging pile assembly. The second object is to provide a charging pile, so as to solve the problem of high cost and low utilization rate of DC fast charging piles, which makes it difficult to recover the investment in charging pile construction.

[0008] Content of the present invention is as follows:

[0009] A charging pile mobile installation component includes a first power conversion interface and a first control module and an AC / DC conversion module electrically connected to the first power conversion interface respectively. The first control module and the AC / DC conversion module are electrically connected independent modules and are both arranged in a first shell.

[0010] Preferably, the AC / DC conversion module includes an EMI input unit, an active PFC unit, a DC / DC conversion unit and an EMI output unit connected in sequence, the EMI input unit is connected to a DSP control unit via an input detection unit, the DSP control unit is respectively connected to the control end of the active PFC unit and the control end of the DC / DC conversion unit, the output end of the active PFC unit is also connected to the DSP control unit via a first power supply unit, the EMI output unit is connected to the DSP control unit via an output detection unit, and the DSP control unit is also connected to a second communication unit.

[0011] Preferably, the DSP control unit is also connected to a GPS positioning unit.

[0012] Preferably, the first control module includes a main monitoring unit, a system power switching unit, a BMS auxiliary power supply unit, an insulation monitoring unit and a first communication unit, the main monitoring unit is connected to the first power conversion interface, the first power conversion interface is connected to the input end of the BMS auxiliary power supply unit, the output end of the BMS auxiliary power supply unit is connected to the first power conversion interface through an intermediate relay K2, the control end of the intermediate relay K2 is connected to the main monitoring unit, the output end of the BMS auxiliary power supply unit is also connected to the first input end of the system power switching unit, and is connected to the main monitoring unit through the system power switching unit, and the second input end of the system power switching unit is connected to the first power The first power conversion interface is connected to the AC / DC conversion module through the air switch QF1, the DC positive and negative output ends of the AC / DC conversion module are respectively connected to the first power conversion interface through the DC contactor KM1 and the first output end of the DC shunt, the second output end of the DC shunt is connected to the main monitoring unit through the DC electric energy meter, the control end of the DC contactor KM1 is connected to the main monitoring unit through the emergency stop switch ST, the input end of the insulation monitoring unit is respectively connected to the output end of the DC contactor KM1 and the first output end of the DC shunt, the output end of the insulation monitoring unit is connected to the main monitoring unit, and the main monitoring unit is connected to the first communication unit.

[0013] Preferably, the first communication unit is connected to a background server, and is connected to a mobile user terminal through the background server.

[0014] Preferably, a fixing plate and a clamp are provided in the first shell, and the AC / DC conversion module is arranged on the fixing plate and fixed by the clamp.

[0015] The present invention also provides a charging pile, comprising a base and the above-mentioned charging pile mobile installation assembly, the base comprising a second shell and an AC input interface, an air switch QF2, an AC contactor KM2, a second power conversion interface and a charging gun interface connected in sequence, the output end of the air switch QF2 is also connected to a second power supply unit, the output end of the second power supply unit is connected to the second power conversion interface, the second power conversion interface and the first power conversion interface match each other, and the base and the charging pile mobile installation assembly are connected through the first power conversion interface and the second power conversion interface.

[0016] Preferably, the second power conversion interface is also connected to a screen monitoring unit, and the screen monitoring unit is connected to a display and / or keyboard for human-computer interaction.

[0017] Preferably, a limiting recess is provided on the second shell, and guiding inclined surfaces are provided on both sides of the limiting recess.

[0018] The beneficial effects of the present invention are as follows: the present invention compactly arranges the relatively high-cost first control module and AC-DC conversion module in the first shell, has a simple structure, and the mobile installation component is small in size, which is easy to carry; when charging is needed, it only needs to be connected to the AC input module for DC fast charging, and the AC input module has a simple structure and low cost, which is suitable for large-scale promotion and construction, and can solve the problem of high cost and low utilization rate of DC fast charging piles, thereby making it difficult to recover the investment in charging pile construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Shown is a structural exploded view of an embodiment of the present invention;

[0020] Figure 2 Shown is a general structural diagram of an embodiment of the present invention;

[0021] Figure 3 The figure shows the pin distribution diagram of the first power conversion interface according to the embodiment of the present invention;

[0022] Figure 4 Shown is a principle block diagram of a mobile installation component according to an embodiment of the present invention;

[0023] Figure 5 The figure shows a principle block diagram of an AC-DC conversion module according to an embodiment of the present invention;

[0024] Figure 6 Shown is a principle block diagram of a base according to an embodiment of the present invention;

[0025] Figure 7 The overall structure of the charging pile in the embodiment of the present invention is shown as follows Figure 1 ;

[0026] Figure 8The overall structure of the charging pile in the embodiment of the present invention is shown as follows Figure 2 ;

[0027] Fig. 9 Shown is a side view of a charging pile according to an embodiment of the present invention. DETAILED DESCRIPTION

[0028] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the following specifically cites a preferred embodiment and describes it in detail with the accompanying drawings as follows.

[0029] Please refer to Figure 1-2 The present embodiment discloses a charging pile mobile installation component, including a first power conversion interface 1 and a first control module 2 and an AC / DC conversion module 3 electrically connected to the first power conversion interface 1, respectively. The first control module 2 is used to manage and protect the charging system, and the AC / DC conversion module 3 is used to convert three-phase AC power into a stable DC voltage. The first control module 2 and the AC / DC conversion module 3 are electrically connected independent modules and are both arranged in a first shell 4. The structure is simple, the modules are compactly arranged, the mobile installation component is small in size, and it is easy to carry.

[0030] Please refer to Figure 3 The first power conversion interface 1 includes AC terminals (A, B, C, N), ground terminals PE, DC output circuit terminals (DC+, DC-), BMS auxiliary power supply unit circuit terminals (A+, A-), base AC contactor control line terminals 1-1, second power supply unit terminals 1-2, screen monitoring unit terminals 1-3, control guide harness terminals 1-4 and spare terminals 1-5.

[0031] Please refer to Figure 4 The first control module 2 includes a main monitoring unit 21, a system power switching unit 22, a BMS auxiliary power supply unit 23, an insulation monitoring unit 24 and a first communication unit 25. The main monitoring unit 21 of this embodiment adopts an existing single-chip microcomputer and its peripheral circuits, the system power switching unit 22 adopts an existing dual-power automatic switching switch, the BMS auxiliary power supply unit 23 adopts a switching power supply, the insulation monitoring unit 24 adopts an existing insulation monitoring circuit, and the first communication unit 25 adopts an existing wireless communication unit.

[0032] The main monitoring unit 21 is connected to the AC / DC conversion module 3. The main monitoring unit 21 is also connected to the first power conversion interface 1 through the base AC contactor control line 211, the base control guide harness 212 and the screen monitoring unit control line 213. The first power conversion interface 1 is connected to the input end of the BMS auxiliary power supply unit 23. The output end of the BMS auxiliary power supply unit 23 is connected to the first power conversion interface 1 through the intermediate relay K2. The control end of the intermediate relay K2 is connected to the main monitoring unit 21. The output end of the BMS auxiliary power supply unit 23 is also connected to the first input end of the system power switching unit 22. , and connected to the main monitoring unit 21 through the system power switching unit 22, the second input end of the system power switching unit 22 is connected to the first power conversion interface 1, the first power conversion interface 1 is connected to the AC / DC conversion module 3 through the air switch QF1, the DC positive and negative output ends of the AC / DC conversion module 3 are connected to the first power conversion interface 1 through the DC contactor KM1 and the first output end of the DC shunt 26, respectively, the second output end of the DC shunt 26 is connected to the main monitoring unit 21 through the DC power meter 27, the DC power meter 27 is used for power metering, and the power data is sent to the main monitoring unit 21. The control end of the DC contactor KM1 is connected to the main monitoring unit 21 through the emergency stop switch ST, and the emergency stop switch ST can disconnect the circuit in an emergency when a fault occurs. The input end of the insulation monitoring unit 24 is connected to the output end of the DC contactor KM1 and the first output end of the DC shunt 26, respectively, and the output end of the insulation monitoring unit 24 is connected to the main monitoring unit 21. The insulation monitoring unit 24 is used to monitor whether there is leakage in the DC output circuit, and feed back the monitoring result to the main monitoring unit 21, which is conducive to improving safety. The main monitoring unit 21 is also connected to an indicator light unit 28, which is used to indicate the working status of the mobile installation component. The main monitoring unit 21 is connected to the first communication unit 25, and the first communication unit 25 is connected to the background server and connected to the mobile user terminal through the background server. The user can communicate with the first communication unit 25 through the mobile user terminal and the background server to perform related operations such as charging and payment.

[0033] Please refer to Figure 5The AC / DC conversion module 3 includes a DSP control unit 35 and an EMI input unit 31, an active PFC unit 32, a DC / DC conversion unit 33 and an EMI output unit 34 connected in sequence. The input end of the EMI input unit 31 is connected to the first power conversion interface 1, and the output end of the EMI output unit 34 is respectively connected to the DC contactor KM1 and the DC shunt 26. In this embodiment, the DSP control unit 35 adopts an existing DSP chip and its peripheral circuits. The EMI input unit 31HE The EMI output unit 34 can use an EMI rectification and filtering circuit, the active PFC unit 32 adopts a power factor correction circuit, the DC / DC conversion unit 33 includes a high-frequency transformer, and the three-phase AC power is input through the power conversion interface. After rectification and filtering and active power factor correction in turn, it meets the EMC standard and obtains a total harmonic content of less than 5%. Then, after high-frequency transformation and DC rectification and filtering, a stable DC voltage is output through the power conversion male connector 1. The EMI input unit 31 is also connected to the DSP control unit 35 through the input detection unit 36, and the input voltage and current data are sent to the DSP control unit 35. The DSP control unit 35 manages and protects the input voltage and current to avoid overcurrent and overvoltage. The EMI output unit 34 is also connected to the DSP control unit 35 through the output detection unit 38, and the output voltage and current data are sent to the DSP control unit 35. The DSP control unit 35 manages and protects the input voltage and current to avoid overcurrent and overvoltage. The DSP control unit 35 is connected to the control end of the active PFC unit 32 and the control end of the DC / DC conversion unit 33 respectively. The DSP control unit 35 generates a PWM signal and sends it to the active PFC unit 32 and the DC / DC conversion unit 33 respectively. The PWM signal is used to drive the active PFC unit 32. The DSP control unit 35 can adjust the PWM signal according to the input voltage and current data to protect the active PFC unit and the DC / DC conversion unit 33. The output end of the active PFC unit 32 is connected to the DSP control unit 35 through the first power supply unit 37. The first power supply unit 37 is used to provide the DSP control unit 35 with a working voltage. The DSP control unit 35 is connected to the main monitoring unit 21 through the second communication unit 39. The DSP control unit 35 is also connected to the GPS positioning unit 310, which is used to locate the position of the mobile installation component in real time to avoid the loss of the mobile installation component.

[0034] Please refer to Figure 1 A fixing plate 5 and a clamp 6 are provided in the first shell 4. The fixing plate 5 is fixed on one side of the first shell 4. The AC / DC conversion module 3 is integrated in a box, which is beneficial to the maintenance and management of the charging pile. The AC / DC conversion module 3 is arranged on the fixing plate 5 and fixed by the clamp 6, which is beneficial to reduce the vibration of the mobile component of the charging pile during carrying.

[0035] Please refer to Figure 6-9 The present embodiment further discloses a charging pile, comprising a base 7 and the above-mentioned charging pile mobile installation assembly, the base 7 comprising a second shell 71 and an AC input interface 72, an air switch QF2, an AC contactor KM2, a second power conversion interface 75 and a charging gun interface 76 connected in sequence, the control end of the AC contactor KM2 is connected to the second power conversion interface 75 through a control line 751, the charging gun interface 76 is connected to the second power conversion interface 75 through a control guide harness 752 on the base, the AC input interface 72, the air switch QF2 and the AC contactor KM2 are arranged in the second shell 71, the charging gun interface 76 is connected to the charging gun, and the output end of the air switch QF2 is also connected to a second power supply unit 73. The second power supply unit 73 of the present embodiment adopts a switching power supply, and the second The output end of the power supply unit 73 is connected to the second power conversion interface 75, and the second power conversion interface 75 is also connected to the screen monitoring unit 74, and the screen monitoring unit 74 is connected to a display and / or keyboard (not shown) for human-computer interaction. The second power conversion interface 75 matches the first power conversion interface 1. When in use, the base 7 and the charging pile mobile installation component are connected through the first power conversion interface 1 and the second power conversion interface 75, and the air switch QF2 is turned on. The AC input interface 72 transmits AC power to the mobile installation component through the first power conversion interface 1 and the second power conversion interface 75. The first control module 2 controls the AC-DC conversion module 3 to convert the AC power into stable DC power and transmit it to the charging gun interface 76 through the power conversion interface, thereby completing the basic charging operation. A limited recessed platform 77 is provided on the second shell 71, and guide inclined surfaces 78 are provided on both sides of the limited recessed platform 77 to facilitate the installation and use of the mobile component and the base 7.

[0036] The base 7 of this embodiment has a low cost and is suitable for large-scale promotion, while the relatively high-cost mobile installation components can be deployed according to the utilization rate of charging piles in each area, which can avoid the difficulty in recovering the investment in charging pile construction due to low utilization rate of charging piles, and can also reduce the burden on the power grid.

[0037] The above is only a preferred embodiment of the present invention. The present invention is not limited to the above implementation. As long as the technical effect of the present invention is achieved by the same means, it should belong to the protection scope of the present invention. Within the protection scope of the present invention, its technical scheme and / or implementation method can have various modifications and changes.

Claims

1. A mobile installation assembly for a charging pile, characterized in that: The invention comprises a first power conversion interface (1) and a first control module (2) and an AC / DC conversion module (3) respectively electrically connected to the first power conversion interface (1); the first control module (2) and the AC / DC conversion module (3) are electrically connected independent modules and are both arranged in a first housing (4); the first control module (2) comprises a main monitoring unit (21), a system power switching unit (22), a BMS auxiliary power supply unit (23), an insulation monitoring unit (24) and a first communication unit (25); the main monitoring unit (21) is connected to the first power conversion interface (1); the first power conversion interface (1) is connected to the input end of the BMS auxiliary power supply unit (23); The output end of the BMS auxiliary power supply unit (23) is connected to the first power conversion interface (1) through an intermediate relay K2, the control end of the intermediate relay K2 is connected to the main monitoring unit (21), the output end of the BMS auxiliary power supply unit (23) is also connected to the first input end of the system power switching unit (22), and is connected to the main monitoring unit (21) through the system power switching unit (22), the second input end of the system power switching unit (22) is connected to the first power conversion interface (1), the first power conversion interface (1) is connected to the AC / DC conversion module (3) through an air switch QF1, and the DC positive and negative output ends of the AC / DC conversion module (3) are respectively connected through a DC contactor K The first output end of the DC shunt (26) and the DC contactor KM1 are connected to the first power conversion interface (1); the second output end of the DC shunt (26) is connected to the main monitoring unit (21) through a DC electric energy meter (27); the control end of the DC contactor KM1 is connected to the main monitoring unit (21) through an emergency stop switch ST; the input end of the insulation monitoring unit (24) is respectively connected to the output end of the DC contactor KM1 and the first output end of the DC shunt (26); the output end of the insulation monitoring unit (24) is connected to the main monitoring unit (21); and the main monitoring unit (21) is connected to the first communication unit (25); the AC / DC conversion module (3) includes an EMI input unit (31) connected in sequence. , an active PFC unit (32), a DC / DC conversion unit (33) and an EMI output unit (34); the EMI input unit (31) is connected to a DSP control unit (35) via an input detection unit (36); the DSP control unit (35) is respectively connected to a control end of the active PFC unit (32) and a control end of the DC / DC conversion unit (33); the output end of the active PFC unit (32) is also connected to the DSP control unit (35) via a first power supply unit (37); the EMI output unit (34) is connected to the DSP control unit (35) via an output detection unit (38); and the DSP control unit (35) is also connected to a second communication unit (39).

2. The mobile installation assembly of the charging pile according to claim 1, characterized in that: The DSP control unit (35) is also connected to a GPS positioning unit (310).

3. The mobile installation assembly of the charging pile according to claim 1, characterized in that: The first communication unit (25) is connected to a background server and is connected to a mobile user terminal through the background server.

4. The charging pile mobile installation assembly according to claim 1, characterized in that: A fixing plate (5) and a clamp (6) are arranged in the first housing (4); the AC / DC conversion module (3) is arranged on the fixing plate (5) and fixed by the clamp (6).

5. A charging pile, characterized in that: The invention comprises a base (7) and a mobile installation assembly for a charging pile as claimed in any one of claims 1 to 4, wherein the base (7) comprises a second shell (71) and an AC input interface (72), an air switch QF2, an AC contactor KM2, a second power conversion interface (75) and a charging gun interface (76) connected in sequence, wherein the output end of the air switch QF2 is also connected to a second power supply unit (73), the output end of the second power supply unit (73) is connected to the second power conversion interface (75), the second power conversion interface (75) matches the first power conversion interface (1), and the base (7) and the mobile installation assembly for the charging pile are connected via the first power conversion interface (1) and the second power conversion interface (75).

6. The charging pile according to claim 5, characterized in that: The second power conversion interface (75) is also connected to a screen monitoring unit (74), and the screen monitoring unit (74) is connected to a display and / or a keyboard for human-computer interaction.

7. The charging pile according to claim 5, characterized in that: A limiting recess (77) is provided on the second shell (71), and guiding inclined surfaces (78) are provided on both sides of the limiting recess (77).

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