Matrix type flexible charging system

Abstract

The utility model relates to the technical field of charging systems, solves the technical problems in the prior art that an annular topological structure is complex and is not beneficial to modular processing, and a pure matrix topological structure switch is large in number, high in cost and short in service life, and particularly relates to a matrix type flexible charging system which comprises a chip control module, the chip control module is used for determining a shortest power transmission line according to system signals and controlling starting and stopping of the charging gun control module according to the system signals, and the system signals comprise power signals and digital signals. And the actual power is controlled within a certain range according to the normal range of the charging power, so that the situation that the electric appliance is affected by too high charging power is avoided, the number of on-off switches and the switching frequency are reduced, the service life of the switches can be prolonged, and the situation that the switches are damaged due to frequent use is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of charging systems, and in particular to a matrix-type flexible charging system. Background Art

[0002] A charging system generally consists of a charger and a charging pile. The charger provides a stable, reliable, and adjustable AC and DC power supply to the charging pile, and the charging pile completes the charging control and charging operation of the electric vehicle. In the existing technology, when the number of power conversion modules or the number of output busbars is large, the ring topology is complex and not conducive to modular processing. The pure matrix topology has a clear structure and strong flexibility, but it has a large number of switches and high costs. In order to ensure the flexible switching of multiple power conversion modules between different charging guns, a large number of switch switches must be performed each time, which greatly reduces the service life and reliability of the switches. Utility Model Content

[0003] In response to the shortcomings of the existing technology, the utility model provides a matrix-type flexible charging system, which solves the technical problems of the existing technology, such as the complex ring topology structure is not conducive to modular processing, and the pure matrix topology structure has a large number of switches, high cost and short service life of the switches. It achieves the purpose of quickly analyzing the charging environment and distributing power through the cooperation of the matrix module and the intelligent distribution module, and increasing the life and reliability of the switches.

[0004] To solve the above technical problems, the present invention provides the following technical solutions: a matrix-type flexible charging system, comprising:

[0005] A chip control module, which is used to determine the shortest power transmission line based on system signals and control the start and stop of the charging gun control module based on the system signals, wherein the system signals include power signals and digital signals;

[0006] a primary matrix module, the primary matrix module establishing a communication connection with the chip control module, the primary matrix module being used to convert the alternating current input by the power supply into direct current and output the direct current;

[0007] A secondary matrix module, which establishes a communication connection with the primary matrix module and is used to maintain a stable output voltage when the charging start and stop state of the charging gun control module changes, and to protect the circuit when a circuit abnormality occurs;

[0008] A charging gun control module, which establishes a communication connection with the secondary matrix module. The charging gun control module is used to convert the analog signal output by the secondary matrix module into a digital signal and transmit the digital signal to the chip control module. The charging gun control module establishes a communication connection with the chip control module;

[0009] The chip control module includes an electric energy acquisition module, which is used to acquire the power signal of the primary matrix module;

[0010] The intelligent distribution module determines the shortest power transmission route based on the acquired power signal and digital signal, and sends a charging instruction to the charging gun control module according to the shortest power transmission route.

[0011] Preferably, the chip control module further includes:

[0012] The full-charge control module is used to send a stop instruction to the charging gun control module and the primary matrix module according to the digital signal after charging is completed.

[0013] Preferably, the primary matrix module includes:

[0014] Several power conversion modules, each including an AC / DC rectifier circuit and a filter circuit. The AC / DC rectifier circuit is used to convert the alternating current input from a power supply in a charging environment into direct current, and the filter circuit is used to filter the ripple of the direct current output from the AC / DC rectifier circuit.

[0015] Preferably, the secondary matrix module includes:

[0016] A voltage stabilizing circuit, which is used to maintain a stable output voltage when the charging start and stop state of the charging gun control module changes;

[0017] The protection circuit is used to prevent the circuit connected to the secondary matrix module from being damaged under abnormal conditions, including overvoltage, overcurrent and short circuit.

[0018] Preferably, the charging gun control module includes:

[0019] A digital-to-analog conversion circuit, which is used to convert analog signals into digital signals and process the digital signals, and can also convert digital signals back into analog signals to facilitate the transmission of electrical signals;

[0020] The start-stop control module is used to start charging the charging gun when receiving a charging instruction and stop charging the charging gun when receiving a stop instruction.

[0021] Preferably, the AC / DC rectifier circuit adopts an AC / DC converter with a model of ‌QL35A1000V.

[0022] By means of the above technical solution, the present invention provides a matrix-type flexible charging system, which has at least the following beneficial effects:

[0023] 1. The utility model, through the joint action of the charging gun control module, the primary matrix module and the intelligent distribution module, can quickly determine the charging path with the least number of switches, and control the actual power within a certain range according to the normal range of the charging power, so as to avoid the situation where the charging power is too high and affects the normal use of the electrical appliances or the entire circuit. It not only reduces the number of switches started and stopped and the number of switches, but also increases the service life of the switch, and avoids the switch from being damaged due to frequent use.

[0024] 2. The utility model uses the coordinated action of the voltage stabilizing circuit and the protection circuit to ensure stable changes in current and voltage when the current and voltage suddenly change during charging start and stop, thereby preventing the circuit from being damaged by the sudden change in current and voltage, effectively reducing the circuit temperature and improving power efficiency. At the same time, the voltage stabilizing circuit and the protection circuit can quickly cut off the circuit in dangerous situations to protect the circuit and electrical appliances, greatly reducing the damage rate of electrical appliances. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0026] Figure 1 This is a structural block diagram of a matrix-type flexible charging system of the utility model;

[0027] Figure 2 This is a structural block diagram of the power conversion module of the utility model;

[0028] Figure 3 This is a structural block diagram of the secondary matrix module of the present utility model;

[0029] Figure 4 This is a structural block diagram of the chip control module of the utility model;

[0030] Figure 5 This is a structural block diagram of the charging gun control module of the utility model;

[0031] Figure 6 This is a circuit schematic diagram of the filter circuit of the utility model;

[0032] Figure 7 This is a circuit diagram of the voltage stabilizing circuit of the utility model;

[0033] Figure 8 This is a circuit diagram of the protection circuit of the utility model;

[0034] Figure 9 This is a circuit principle diagram of the digital-to-analog conversion circuit of the utility model.

[0035] In the figure: 1. Primary matrix module; 11. Power conversion module; 2. Secondary matrix module; 21. Precision analysis module; 22. Result output module; 3. Intelligent distribution module; 31. Temperature detection module; 32. Power calculation module; 33. Stability analysis module; 34. Intelligent analysis module; 4. Charging gun control module; 41. Connection module; 42. Automatic stop module. DETAILED DESCRIPTION

[0036] To make the above-mentioned objectives, features, and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments. This will enable a full understanding of how the present invention applies technical means to solve technical problems and achieve technical effects, and to implement the invention accordingly.

[0037] Due to the complex ring topology of the existing technology, it is not conducive to modular processing, and the pure matrix topology has a large number of switches, high cost and short service life of the switches. Please refer to Figures 1-9 This embodiment provides a matrix-type flexible charging system that can quickly analyze the charging environment and distribute power through the cooperation of a matrix module and an intelligent distribution module, thereby increasing the lifespan and reliability of the switch. The system includes: a chip control module 1 for determining the shortest power transmission route based on a system signal and controlling the start and stop of a charging gun control module 4 based on the system signal, wherein the system signal includes a power signal and a digital signal. The chip control module 1 includes an energy acquisition module 11 for acquiring the power signal of a primary matrix module 2; an intelligent distribution module 12 for determining the shortest power transmission route based on the acquired power signal and digital signal, and issuing a charging instruction to the charging gun control module 4 based on the shortest power transmission route; and a full-charge control module 13 for issuing a stop instruction to the charging gun control module 4 and the primary matrix module 2 based on a digital signal after charging is completed.

[0038] In the present invention, the power acquisition module 11 in the chip control module 1 can transmit the acquired power signal to the intelligent distribution module 12. The model of the power acquisition module 11 is JWTP-SU-15A700V. The charging gun control module 4 can convert the output analog signal into a digital signal and transmit it to the intelligent distribution module 12. The model of the intelligent distribution module 12 is DPZ-48-25-4‌. The power range of the primary matrix module 2 output can be obtained from the power signal. The position of the charging gun with charging demand and the charging start and stop situation can be determined according to the digital signal. Under the premise of not exceeding the power range, the intelligent distribution module 12 can be used to determine the position of the charging gun with charging demand and the charging start and stop situation of other charging guns. Algorithm a calculates the path through which the current passes through the least number of switches, and then starts charging. Through the joint action of the charging gun control module 4, the primary matrix module 2 and the intelligent distribution module 12, the charging path with the least number of switches can be quickly determined, and the charging power is controlled within a certain range to avoid the situation where the charging power exceeds the charging power and affects the use of electrical appliances. This not only reduces the number of switches started and stopped and the number of switches, but also increases the service life of the switch, avoiding damage to the switch due to frequent use. When the charging gun is fully charged, the voltage will change and a digital signal will be sent. After receiving the signal, the full-charge control module 13 sends a stop command to the charging gun control module 4 and the primary matrix module 2 to control the charging system to suspend charging. The model of the full-charge control module 13 is HY-80A.

[0039] The primary matrix module 2 is used to convert the AC power input from the power supply into DC power and output the DC power. The primary matrix module 2 establishes a communication connection with the chip control module 1. The primary matrix module 2 includes several power conversion modules 21 for converting AC power into DC power and filtering the DC power. The power conversion module 21 includes an AC / DC rectifier circuit 211 for converting the AC power input from the power supply in a charging environment into DC power, and a filter circuit 212 for filtering the ripple of the DC power output by the AC / DC rectifier circuit 211. The AC / DC rectifier circuit 211 uses an AC / DC converter model QL35A1000V.

[0040] The utility model converts the AC power input by the power supply into a DC voltage suitable for car charging through the primary matrix module 2. The AC / DC converter model QL35A1000V is a converter with stable operation and suitable for high-voltage rectification. According to the requirements of my country's automobile charging voltage standards, the voltage of small-sized vehicles is generally 48V, 60V, and 72V, the voltage of passenger cars ranges from 200V to 360V, and the voltage of minibuses is 400-500V. The AC / DC converter can meet the charging requirements of most vehicle models and battery models. The user can select the charging voltage according to the operation interface. After the DC power is output, some noise will appear in the DC waveform, affecting the normal use of the user. The DC ripple is filtered by the filter circuit 212 to make the output DC power more stable and safe. Figure 6 FIG. 2 is a circuit diagram of the filter circuit 212 of this embodiment.

[0041] The secondary matrix module 3 is used to maintain the output voltage stable when the charging start and stop state of the charging gun control module 4 changes, and to protect the circuit when a circuit abnormality occurs. The secondary matrix module 3 establishes a communication connection with the primary matrix module 2. The secondary matrix module 3 includes a voltage stabilizing circuit 31 for maintaining the output voltage stable when the charging start and stop state of the charging gun control module 4 changes, and a protection circuit 32 for preventing the circuit connected to the secondary matrix module 3 from being damaged under abnormal conditions, including overvoltage, overcurrent and short circuit.

[0042] In the present invention, when the charging gun of the charging gun control module 4 starts charging, the voltage and current will increase. When charging stops, the voltage and current will not disappear immediately, but will be in a trickle state. In order to prevent problems from occurring in the process of increasing and decreasing the current and voltage of the electrical appliances, the voltage stabilizing circuit 31 is used to keep the current and voltage stable. At the same time, the charging circuit is prone to dangerous situations such as overvoltage, overcurrent and short circuit during use, which can easily damage the electrical appliances on the circuit, such as Figure 7 As shown in FIG. 3 , the circuit principle diagram of the voltage stabilizing circuit 31 of this embodiment is shown. In order to protect the circuits and electrical appliances connected to the secondary matrix module 3 from being used normally, the protection circuit 32 is used to protect the circuits. Figure 8 FIG. 1 is a circuit diagram of the protection circuit 32 of this embodiment.

[0043] The charging gun control module 4 is used to convert the analog signal output by the secondary matrix module 3 into a digital signal, and transmit the digital signal to the chip control module 1. The charging gun control module 4 establishes a communication connection with the secondary matrix module 3, and the charging gun control module 4 establishes a communication connection with the chip control module 1. The charging gun control module 4 includes a digital-to-analog conversion circuit 41 for converting analog signals into digital signals and processing digital signals, and can also convert digital signals back into analog signals to facilitate the transmission of electrical signals. It is used to start the charging gun charging when a charging instruction is received and stop the charging gun charging when a stop instruction is received.

[0044] The utility model can convert the analog signal in the circuit into a digital signal through the digital-to-analog conversion circuit 41 in the charging gun control module 4, and input the digital signal into the chip control module 1 so that the chip control module 1 can analyze the digital signal and record data. Figure 9 As shown, this is the circuit schematic diagram of the digital-to-analog conversion circuit 41 of this embodiment. At the same time, through the analysis and control of the start-stop control module 42 in conjunction with the chip control module 1, the model of the start-stop control module 42 is EVR500-15000, which can automatically control the start and stop of the charging status of the charging gun, reduce the intervention of staff, and greatly reduce the labor cost of charging.

[0045] Each embodiment in this specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to in detail. For the above embodiments, since they are basically similar to the method embodiments, the description is relatively simple. For relevant parts, please refer to the partial description of the method embodiments.

[0046] The above embodiments provide a detailed introduction to the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there may be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A matrix flexible charging system, characterized in that: include: A chip control module (1), the chip control module (1) is used to determine the shortest power transmission line according to a system signal, and to control the start and stop of the charging gun control module (4) according to the system signal, wherein the system signal includes a power signal and a digital signal; A primary matrix module (2), the primary matrix module (2) establishing a communication connection with the chip control module (1), the primary matrix module (2) being used to convert alternating current input from a power supply into direct current and output the direct current; A secondary matrix module (3), the secondary matrix module (3) establishing a communication connection with the primary matrix module (2), the secondary matrix module (3) being used to maintain a stable voltage output when the charging start / stop state of the charging gun control module (4) changes; A charging gun control module (4) is connected to the secondary matrix module (3) for establishing a communication connection. The charging gun control module (4) is used to convert an analog signal output by the secondary matrix module (3) into a digital signal, and transmit the digital signal to the chip control module (1). The charging gun control module (4) is connected to the chip control module (1).

2. The flexible charging system according to claim 1, characterized in that: The chip control module (1) comprises: The chip control module (1) comprises an electric energy acquisition module (11), and the electric energy acquisition module (11) is used to acquire the power signal of the primary matrix module (2); An intelligent distribution module (12), the intelligent distribution module (12) determines the shortest power transmission line according to the acquired power signal and digital signal, and sends a charging instruction to the charging gun control module (4) according to the shortest power transmission line; A full-charge control module (13) is used to send a stop instruction to the charging gun control module (4) and the primary matrix module (2) according to a digital signal after charging is completed.

3. The flexible charging system according to claim 1, characterized in that: The primary matrix module (2) comprises: A plurality of power conversion modules (21), wherein the power conversion modules (21) include an AC / DC rectifier circuit (211) and a filter circuit (212), wherein the AC / DC rectifier circuit (211) is used to convert alternating current (AC) input from a power supply in a charging environment into DC power, and the filter circuit (212) is used to filter ripples in the DC power output from the AC / DC rectifier circuit (211).

4. The flexible charging system according to claim 1, characterized in that: The secondary matrix module (3) comprises: A voltage stabilizing circuit (31), the voltage stabilizing circuit (31) being used to keep the output voltage stable when the charging start / stop state of the charging gun control module (4) changes; A protection circuit (32) is used to prevent the circuit connected to the secondary matrix module (3) from being damaged under abnormal conditions, including overvoltage, overcurrent and short circuit.

5. The flexible charging system according to claim 1, characterized in that: The charging gun control module (4) comprises: A digital-to-analog conversion circuit (41), the digital-to-analog conversion circuit (41) is used to convert analog signals into digital signals and process the digital signals, and can also convert digital signals back into analog signals to facilitate transmission of electrical signals; A start-stop control module (42) is used to start charging with the charging gun when a charging instruction is received, and to stop charging with the charging gun when a stop instruction is received.

6. The flexible charging system according to claim 3, characterized in that: The AC / DC rectifier circuit (211) uses an AC / DC converter of model ‌QL35A1000V.

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