CN219016475U - DC charging pile field calibration device of improved DSP+ARM - Google Patents
DC charging pile field calibration device of improved DSP+ARM Download PDFInfo
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- CN219016475U CN219016475U CN202223376860.4U CN202223376860U CN219016475U CN 219016475 U CN219016475 U CN 219016475U CN 202223376860 U CN202223376860 U CN 202223376860U CN 219016475 U CN219016475 U CN 219016475U
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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Abstract
The utility model discloses an improved DSP+ARM direct-current charging pile field calibration device which is applied to the field of electric automobile charging; the technical problem to be solved is that the DC charging pile field calibration adopts the technical scheme that the improved DSP+ARM DC charging pile field calibration device comprises a switch box, a charging control unit, a radiator, a DC power distribution device and a BMS module; the charging control unit outputs direct-current electric energy to the switch box, the direct-current electric energy reaches the direct-current power distribution device after the switch in the switch box is closed, the direct-current power distribution device inputs the direct-current electric energy to the battery to be charged, which is coupled with the BMS module, through the BMS module, and finally the charging work of the direct-current charging pile battery is completed; the charging device in the charging control unit is connected with the charging check signal line through the charging control interface; the utility model has strong heat radiation capability and high verification accuracy, and greatly improves the analysis and processing capability of the charging verification signal.
Description
Technical Field
The utility model relates to the field of electric automobile charging, in particular to an improved direct current charging pile field calibration device for DSP+ARM.
Background
With the wide use of electric vehicles, charging piles have been widely deployed. The charging piles are divided into alternating current charging piles and direct current charging piles. The direct current fills electric pile and stake plug type split and fill electric pile in unison according to the different forms of direct current fills electric pile, wherein stake plug fills electric pile in unison and mainly includes IP54 outdoor rack, exchanging distributor, direct current distributor, insulation detecting element, main control unit (charge metering and charge management), charge module, auxiliary power supply, fan, temperature controller, fills electric pile etc. plug-in fills electric pile and generally includes two parts: a power supply cabinet and a charging terminal. If the power cabinet is installed outdoors, it is necessary to protect at least the outdoor cabinet with the level of IP54, and if the power cabinet is deployed indoors, it is necessary to deploy the power cabinet in a designated equipment room. The power cabinet is mainly provided with a charging module for converting alternating current into direct current. The charging terminal is typically deployed outdoors, including charging plugs, billing metering functions and man-machine interfaces, auxiliary power supplies, insulation detection units, dc distributors, etc.
When existing charging posts are deployed outdoors, the cabinet needs to use a protection design of at least IP54 level in view of heat dissipation requirements and waterproof requirements, which is very heat consuming for the charging posts. Currently, the prior art generally uses a dust filter for heat dissipation treatment, which results in a very high annual failure rate of the charging module and lower reliability. In addition, because the controller chip performance is poor, some equipment of the charging pile needs to be replaced regularly, and the maintenance cost is extremely high.
Disclosure of Invention
Aiming at the problems, the utility model discloses an improved DSP+ARM direct current charging pile field calibration device which can perform field calibration of a direct current charging pile, has strong heat radiation capability and high calibration accuracy, and can greatly improve the analysis and processing capability of charging calibration signals.
In order to achieve the technical effects, the utility model adopts the following technical scheme:
the utility model provides an on-spot verifying attachment of direct current charging stake of improved generation DSP+ARM, wherein verifying attachment includes:
the switch box is used for controlling the opening and closing of the charging process of the direct current charging pile; the switch box comprises three switches Q1, Q2 and Q3;
the first charging control unit is used for controlling signal sampling, signal conditioning and AD conversion of the on-site verification of the direct current charging pile; the first charging control unit comprises a DSP module, an ARM module, a first charging device and a signal line concentrator, wherein the first charging device outputs direct-current electric energy to reach the signal line concentrator through a first charging control unit interface, the signal line concentrator modulates an input direct-current electric energy signal, the signal line concentrator outputs a modulated charging check signal to the DSP module, and the DSP module and the ARM module interact with each other through an HPI interface; the HPI interface adopts a 16-bit transmission mode, when the verification device starts to operate, the DSP module and the ARM module send a control instruction to an HPI address register, and the HPI address register accesses the DSP module and the ARM module, which are pointed by the HPI address to charge the verification signal;
the DSP module is used for calculating a charging check signal; the ARM module is used for calculating the charging check signal in real time; the ARM module adopts an S3C6410 type chip and is used for calculating the charging check signal in real time; the charging device is used for outputting direct-current electric energy to charge the battery; the charging device is a direct-current charging power supply, the charging device comprises an anode and a cathode, the potential of the anode is high, the potential of the cathode is low, when the anode and the cathode of the charging device are communicated with a main circuit of the charging device, a constant potential difference is maintained between two ends of the circuit, so that current from the anode to the cathode is formed in an external circuit, the potential difference between the two electrodes is maintained, and a stable constant current is provided for a battery; the signal line concentrator is used for charging the transfer interface of the check signal line;
the radiator is used for radiating heat of the first charging control unit; the radiator is a owl NH-D15 type air-cooled radiator, two NF-A15PWM mute fans are coupled to the air-cooled radiator, and the air-cooled radiator radiates heat to the first charging control unit in an air-cooled mode;
the direct current distribution device is used for protecting the checking device and sending out alarm signals; the direct current power distribution device is positioned in the middle of the circuit for connecting the first charging control unit and the BMS module;
a BMS module for controlling, monitoring and displaying the storage of electrical energy within the battery;
the first charging control unit in the verification device outputs direct-current electric energy to reach the switch box, the direct-current electric energy reaches the direct-current power distribution device through the closed Q1, Q2 and Q3 switches in the switch box, the direct-current power distribution device inputs the direct-current electric energy to the battery to be charged coupled with the BMS module through the BMS module, and finally the charging work of the direct-current charging pile battery is completed; the radiator is connected with the first charging control unit and radiates heat to the first charging control unit in an air cooling mode;
as a further technical scheme of the utility model, the dual-core chip central controller further comprises a charging control unit interface, a signal conditioning circuit and an AD conversion circuit:
the charging control unit interface is used for connecting a charging device input charging check signal line; the charging control unit interface comprises S-, S+, A-, A+, PE, DC-and DC+, wherein the A+ and A-pins are respectively connected to the positive and negative voltage terminals of the charging device; the DC+ and DC-pins are respectively connected to positive and negative current terminals of the charging device; the S+ pin and the S-pin are connected to an RS485A terminal and an RS485B terminal of the charging device; the PE pin is connected to a grounding wire of the charging device;
the signal conditioning circuit is used for modulating the charging check signal; the signal conditioning circuit inputs unconditioned charging check signals, the forward voltage is grounded through the action of an amplifier, the reverse voltage finally flows into a triode signal conversion center through resistance reduction, the two triode emitter pairs are connected, the charging check signal circulation can be effectively completed, the collector is connected with a plurality of resistance loops, and the conditioned charging check signals are finally output;
an AD conversion circuit for converting the charge check signal into charge check data; the AD conversion circuit adopts an AD603 chip to perform signal conversion work, and a special interpolation technology is utilized to provide a linear continuous gain control function taking dB as a unit;
the charging control interface receives a charging check signal wire input by the charging device, and outputs the charging check signal wire to the dual-core chip central controller through the signal conditioning circuit and the AD conversion circuit.
As a further technical scheme of the utility model, the DSP module comprises a power operation circuit, a power operation circuit and a counting sampling circuit.
As a further technical scheme of the utility model, the ARM module comprises a communication interface, a data storage and data display module; the communication interface adopts an RS232 serial port to carry out remote data interaction with an external server, the data storage module adopts a parallel database to store charging check data, and the data display module adopts visual analysis to carry out association mining on the charging check data.
As a further technical scheme of the utility model, the three switches included in the switch box are a first switch transistor, a second switch transistor and a third switch transistor; the first, second and third switching transistors may be metal oxide semiconductor field-effect-transistor or insulated gate bipolar transistors.
As a further technical scheme of the utility model, the verification device further comprises a second charging control unit; the first charging control unit comprises a first charging device; the second charging control unit comprises a second charging device, and the first charging device are both used for outputting direct-current electric energy to charge the battery.
As a further technical scheme of the utility model, the direct current power distribution device further comprises a charging plug, wherein the charging plug is coupled to the direct current power distribution device and is a three-vertical, one-horizontal, two-vertical, T-shaped or I-shaped plug.
As a further technical scheme of the utility model, the on-site verification device further comprises an on-site verification user terminal; the on-site verification user terminal is a PIGOSS BSM platform, and the PIGOSS BSM platform monitors the direct-current charging pile in an out-of-band and in-band mode, so that an on-site verifier can know the charging state of the direct-current charging pile in real time; and the on-site verification user terminal receives the charging verification signals input by the first charging control unit and the second charging control unit, performs on-site calculation and analysis through the server, and obtains an analysis result of the direct current charging process.
As a further technical scheme of the utility model, the on-site verification device of the direct current charging pile of the improved DSP+ARM operates in three working modes, and the on-site verification device operates in three working modes, wherein a first charging control unit and a second charging control unit are connected in parallel to form a first working mode, the first charging control unit and the second charging control unit are connected in series to form a second working mode, and the first charging control unit and the second charging control unit are connected in parallel and in series to form a third working mode.
The beneficial effects of the utility model are as follows:
compared with the conventional technology, the utility model can provide predictability, reactivity and initiative for processing the charging condition of the direct current charging pile, can work with minimum cost through the improved DSP+ARM dual-core chip, and monitors the charging check signal of the direct current charging pile in real time and analyzes the result. The on-site calibration of the direct current charging pile can be performed, the heat radiation capability is strong, the calibration accuracy is high, and the analysis and processing capability of charging calibration signals can be greatly improved.
Drawings
For a clearer description of embodiments of the utility model or of solutions in the prior art, the drawings that are necessary for the description of the embodiments or of the prior art will be briefly described, it being apparent that the drawings in the description below are only some embodiments of the utility model, from which, without inventive faculty, other drawings can be obtained for a person skilled in the art, in which:
FIG. 1 shows a block diagram of a DC charging pile field calibration device of an improved DSP+ARM;
fig. 2 shows an internal structural view of the charge control unit;
FIG. 3 shows a signal conditioning circuit diagram;
FIG. 4 illustrates a signal line concentrator schematic;
Detailed Description
The preferred embodiments of the present utility model will be described below with reference to the accompanying drawings, it being understood that the embodiments described herein are for illustration and explanation of the present utility model only, and are not intended to limit the present utility model;
as shown in fig. 1, the dc charging post field checking device of the improved digital signal processor (Digital Signal Processor, DSP) +advanced RISC machine (Advanced RISC Machines, ARM) includes a switch box, a charging control unit, a heat sink, a dc power distribution device and a battery management system (Battery management system, BMS).
In a specific embodiment, the switch box is used for controlling the opening and closing of the charging process of the direct current charging pile. The switch box comprises three switches Q1, Q2 and Q3; the charging control unit is used for controlling signal samples, signal conditioning and digital-to-analog conversion of the on-site verification of the direct current charging pile. The charging control unit is controlled by adopting an improved DSP+ARM dual-core chip central controller. The first switching transistor QI, the second switching transistor Q2, and the third switching transistor Q3 are configured to implement a serial connection or a parallel connection between the first power operation unit and the second charge control unit. The heat sink is configured to dissipate heat of the power system. The charging terminal comprises a charging control module, a direct-current power distribution device and a charging plug. The charging plug is configured to be connected to and charge the battery to be charged, the direct-current power distribution device is configured to distribute power to the charging plug, and the charging control module is used for charging and displaying charging.
In a specific embodiment, the electrical control unit comprises a first charging control unit and a second charging control unit, the first charging control unit comprising a first charging device; the second charging control unit includes a second charging device. The switch box comprises three switches Q1, Q2 and Q3, namely a first switch transistor, a second switch transistor and a third switch transistor; the first, second and third switching transistors may be metal oxide semiconductor field-effect-transistor or insulated gate bipolar transistors. Further, a first terminal of the first switching transistor QI is connected to a first terminal of the first charge control unit and the dc distribution unit, a second terminal of the first switching transistor Q1 is connected to a first terminal of the second charge control unit, a first terminal of the second switching transistor Q2 is connected to a second terminal of the first power supply unit, a second terminal of the second switching transistor Q2 is connected to a first terminal of the second charge control unit and a second terminal of the first switching transistor Q1, a first terminal of the third switching transistor Q3 is connected to a second terminal of the first charge control unit and a first terminal of the second switching transistor Q2, and a second terminal of the third switching transistor Q3 is connected to a second terminal of the second charge control unit and the dc distribution unit. When the three switching transistors are connected in the above manner, serial and parallel connection between the two charging control units can be flexibly achieved, so that the charging voltage and the charging current of the charging pile can be flexibly expanded. The two charging control units are connected in series or in parallel by using three switching transistors to provide flexible charging voltage and flexible charging current for the battery to be charged. Therefore, the difficulty in capacity expansion of the charging pile is overcome, and the requirements of the electric automobile on higher and higher charging voltage and charging current are met.
In a specific embodiment, the improved dsp+arm dc charging pile field verification device may operate in three operating modes, where the three operating modes include: a first operation mode in which the first charge control unit and the second charge control unit are connected in parallel; a second operation mode in which the first charge control unit and the second charge control unit are connected in series; and a third mode of operation wherein the first charge control unit and the second charge control unit are connected in parallel and in series-parallel. The charging piles in three different working modes provide different services for the battery to be charged according to different requirements. When the to-be-charged battery of the electric automobile needs charging voltage and current changes during charging, the charging pile can perform corresponding actions according to three different working modes. The trigger conditions and specific control logic for the three different modes of operation are described below:
1. when the charging plug is connected to the battery to be charged, the charging control module communicates with the BMS module of the battery to be charged and recognizes a charging voltage of the battery to be charged and a charging current required by the battery to be charged: when the charging voltage range is within the U value range and the charging current required by the battery to be charged is greater than or equal to a first preset threshold value, the charging control module is communicated with the power control unit, the power control unit controls the second switching transistor Q2 to be disconnected, and controls the first switching transistor Q1 and the third switching transistor Q3 to be closed, so that the charging pile enters a first working mode. In addition, the power control unit adjusts the output voltage and the output current of the first charging control unit and the second charging control unit, so that the battery to be charged discharges with a large current (greater than or equal to a first preset threshold value), and the battery to be charged is quickly fully charged. During charging, the currents of the first and second charge control units need to be equal to maintain load balance. After the charging is completed, all switches of the first switching transistor Q1, the second switching transistor Q2, and the third switching transistor Q3 are turned off.
2. When the charging plug is connected to the battery to be charged, the charging control module communicates with the BMS module of the battery to be charged and recognizes the charging voltage of the battery to be charged and the charging current required by the battery to be charged; when the range of the charging voltage exceeds the U value range and is smaller than the output voltage obtained after the first charging control unit and the second charging control unit are connected in series and the charging current required by the battery to be charged is smaller than I, the charging control module is communicated with the power control unit, the power control unit controls the second switching transistor Q2 to be closed, and controls the first switching transistor Q1 and the third switching transistor Q3 to be opened, so that the charging pile enters the second working mode. In addition, the power control unit adjusts the output voltage and the output current of the first charging control unit and the second charging control unit so as to meet the charging requirement of the battery to be charged. In the charging process, the output voltage of the first charging control unit is the same as that of the second power module so as to keep load balance. After the charging is completed, the first switching transistor Q1, the second switching transistor Q2, and the third switching transistor Q3 are all turned off.
3. When the charging plug is connected to the battery to be charged, the charging control module communicates with the BMS module of the battery to be charged and recognizes a charging voltage of the battery to be charged and a charging current required by the battery to be charged: when the charging voltage range exceeds the U value range and the charging current required by the battery to be charged is greater than I, the charging control module is communicated with the power control unit, and the power control unit controls the second switching transistor Q2 to be turned on and controls the first switching transistor Q1 and the third switching transistor Q3 to be turned off. Thereby the first charging control unit and the second charging control unit execute the output in parallel, and the power control unit adjusts the output voltage and the output current of the first charging control unit and the second charging control unit; when the charging voltage of the battery to be charged reaches the maximum value U, the power control unit controls the first switching transistor Q1 and the third switching transistor Q3 to be switched off, and controls the second switching transistor Q2 to be switched on, so that the first charging control unit and the second charging control unit are output in series, and the charging pile enters a third working mode. The output current is adjusted so that the output current can meet the charging current required by the battery to be charged, and the output current can be ensured not to exceed the capacity of the battery to be charged.
In a specific embodiment, the power control unit adjusts the output voltage and the output current of the first charging control unit and the second charging control unit to meet the charging requirement of the battery to be charged. In the charging process, the output voltage of the first charging control unit is the same as that of the second power module so as to keep load balance. After the charging is completed, all of the first, second and third switching transistors Q1, Q2 and Q3 are compared with the conventional solution. In the first three working modes, the output voltage and the output current of different charging control units can be flexibly combined to fully utilize the charging control units, so that the charging pile works in the optimal state with the lowest cost. Based on the above, when charging the secondary batteries of different electric vehicles, there are different requirements on the charging voltage and the charging current. The charging control module recognizes the requirement of the storage battery to be charged and controls the three switching transistors according to the specific requirement of the storage battery to be charged. In this way, the two charging control units of the charging stake are connected in different manners, so that the charging stake enters the corresponding operation mode among the three operation modes, and in order to charge the battery to be charged, it should be noted that the charging terminal of the charging stake provided in the first embodiment may be disposed on the top or one side of the power system and form a unified charging stake with the power system, or may be disposed on the ground independently and form a separate charging stake with the power system, which is not limited to this solution.
In a specific embodiment, the first, second and third switching transistors Q1, Q2 and Q3 may be any one of MOSFETs (metal oxide semiconductor field effect transistors), IGBTs (insulated gate bipolar transistors), contactors or relays, provided that the first, second and third switching transistors Q1, O2 and Q3 may cooperate to realize serial and parallel connection between the first and second charge control units. In this solution, the specific forms of the first switching transistor Ql, the second switching transistor Q2, and the third switching transistor Q3 are not limited.
In a specific embodiment, the heat sink is used for dissipating heat of the charging control unit. The radiator is a owl NH-D15 type air-cooled radiator, two NF-A15PWM mute fans are coupled to the air-cooled radiator, and the air-cooled radiator radiates heat to the charging control unit in an air cooling mode. The direct current distribution device is used for protecting the direct current charging pile field calibration device of the improved DSP+ARM and sending out an alarm signal. The direct current distribution device is located in the middle of the circuit for connecting the charging control unit and the BMS module. The BMS module is used for controlling, monitoring and displaying electric energy storage in the battery. The charging control unit outputs direct-current electric energy to reach the switch box, the direct-current electric energy reaches the direct-current power distribution device through the switch closure in the switch box, the direct-current power distribution device inputs the direct-current electric energy to the battery to be charged of the BMS module coupling through the BMS module, and finally the charging work of the direct-current charging pile battery is completed.
In a specific embodiment, the heat sink of the first charge control unit and the heat sink of the second charge control unit are the same heat sink. By using the radiator, heat can be absorbed without arranging a fan in the whole system. Compared to existing direct ventilation heat dissipation, heat dissipation in this way does not require a dust filter. Therefore, the cost can be further reduced on the basis of realizing the natural heat dissipation of the whole system. Of course, although there is no fan for heat dissipation inside the system, the charging stake provided in the first embodiment of the present solution may also include a waterproof fan. The waterproof fan may be disposed outside the power system and configured to radiate heat of the fins. To further strengthen the heat dissipating cap stake. Further, on the basis of the above-described embodiments, the power system may be installed on the ground using the radiator as a bracket, or may be suspended on a wall or a pole using the radiator to enhance the heat radiation capability of the power system. It should be further noted that, compared with the conventional dc charging pile, in the charging pile provided in the embodiment of the present utility model, the power system may be protected by using the IP65 protection design, because the IP65 protection level is higher than the IP54 protection level, the charging pile provided in the embodiment of the present utility model may not be provided with a dust filter, so that the dust filter does not need to be replaced periodically, thereby greatly reducing the failure rate of the power device, and greatly reducing the maintenance cost of the charging pile.
In a specific embodiment, as shown in fig. 2, the charging control unit includes a DSP module, ARM module electrical devices, and a hub line. The DSP module is used for processing the charging check signal; the DSP module adopts TMS320DM642 type chip of TI company, which is used for processing the charging check signal in real time. The ARM module is used for calculating the charging check signal in real time; the ARM module adopts an S3C6410 type chip and is used for calculating the charging check signal in real time. The charging device is used for outputting direct-current electric energy to charge the battery; the charging device is a direct-current charging power supply and is suitable for low voltage requirements but larger charging current; the charging device comprises a positive electrode and a negative electrode, the potential of the positive electrode is high, the potential of the negative electrode is low, when the positive electrode and the negative electrode of the charging device are communicated with a main circuit of the charging device, a constant potential difference can be maintained between two ends of the circuit, so that a current from the positive electrode to the negative electrode is formed in an external circuit, positive charges return to the positive electrode with higher potential from the negative electrode with lower potential through the inside of a power supply, and a potential difference between the two electrodes is maintained, so that a stable and constant current is provided for the battery.
In a specific embodiment, the structure of the charging device and the dsp+arm dual-core chip central controller in the charging control unit further comprises a charging control unit interface, a signal conditioning circuit and an AD conversion circuit.
The signal conditioning circuit is used for modulating the charging check signal, as shown in fig. 3, the signal conditioning circuit inputs the unconditioned charging check signal, the forward voltage is grounded, the reverse voltage is reduced by the resistor and finally flows into the triode signal conversion center, the two triode emission pairs can effectively complete the circulation of the charging check signal, the collector is connected with a plurality of resistor loops, and the conditioned charging check signal is finally output. The signal conditioning circuit is optimized, so that the running of the direct current charging pile is more in accordance with the verification standard, and the data of the direct current charging pile and the direct current charging pile are prevented from collision. The operation process of the circuit is optimized, the whole circuit is composed of an amplifier and a triode, the input voltage signal is grounded through the action of the amplifier, the reverse voltage finally flows into a triode signal conversion center through resistance reduction, two triode emitting pole pairs are connected, signal circulation can be effectively completed, a collector is connected with a plurality of resistance loops, a signal conditioning result is finally output, and a base is finally grounded. The whole optimized conditioning circuit has stronger noise suppression capability on multiple loops, and the running stability of the direct current charging pile is enhanced. The optimal design of the charging check signal conditioning circuit not only keeps the advantages of the original functions, but also increases the speed of signal conversion, can accurately identify multi-loop equipment information, and provides data support for the check device.
In a specific embodiment, the AD conversion circuit is configured to convert the charge check signal into charge check data. The AD conversion circuit adopts an AD603 chip to perform signal conversion work, and can provide a linear continuous gain control function with dB as a unit by utilizing a proprietary interpolation technology. The charging control unit interface is used for connecting a charging device input charging check signal line.
The signal line concentrator is used for charging the transfer interface of the check signal line, as shown in figure 4, the signal line concentrator comprises S-, S+, A-, A+, PE, DC-and DC+, wherein the A+ and A-pins are respectively connected to the positive electrode and the negative electrode voltage terminals of the charging device; the DC+ and DC-pins are respectively connected to positive and negative current terminals of the charging device; the S+ pin and the S-pin are connected to an RS485A terminal and an RS485B terminal of the charging device; the PE pin is connected to a ground wire of the charging device. The charging control interface receives a charging check signal wire input by the charging device, and outputs the charging check signal wire to the central controller of the DSP+ARM dual-core chip through the signal conditioning circuit and the AD conversion circuit.
In a specific embodiment, the DSP module and the ARM module carry out charge checking signal interaction through an HPI interface, the HPI interface adopts a 16-bit transmission mode, and mutual interruption can be realized between the ARM module and the DSP module through the HPI interface; the HPI interface can directly access the parallel port of the DSP module and the storage space thereof through the ARM module, the host equipment is used as a main interface, so that the host equipment can be accessed more easily, the DSP module and the ARM module can exchange charging check signals through internal and external memories, and the ARM module can also directly access peripheral equipment of the storage mapping of the DSP module. The DSP module in the DSP+ARM dual-core chip central controller comprises power operation, electric energy operation and counting sampling technology; the power operation electric energy operation and counting sampling technology is a pulse signal device, the pulse signal device extracts a power signal and an electric energy signal pulse sequence or a digital sequence, the pulse signal device converts the pulse signal into a discretized continuous signal, and counting sampling of the power signal and the electric energy signal is carried out by a frequency domain partitioning method;
in a specific embodiment, an ARM module in the DSP+ARM dual-core chip central controller comprises a communication interface, a data storage and data display module; the communication interface adopts an RS232 serial port to carry out remote data interaction with an external server, the data storage module adopts a parallel database to store charging check data, and the data display module adopts visual analysis to carry out association mining on the charging check data.
In the specific embodiment, the direct current power distribution device further comprises a charging plug, the charging plug is coupled to the direct current power distribution device, and the charging plug is a universal plug and is suitable for three-vertical, one-horizontal, two-vertical, T-shaped and delta-shaped plugs. The on-site verification device of the direct current charging pile of the improved DSP+ARM further comprises an on-site verification user terminal, wherein the on-site verification user terminal receives charging verification signals input by the first charging control unit and the second charging control unit, performs on-site calculation and analysis through a server, and obtains an analysis result of a direct current charging process. While specific embodiments of the present utility model have been described above, it will be understood by those skilled in the art that the foregoing detailed description is given by way of example only, and that various omissions, substitutions and changes in the form of the details of the method and system illustrated may be made by those skilled in the art without departing from the spirit and scope of the utility model; for example, it is within the scope of the present utility model to combine the above-described method steps to perform substantially the same function in substantially the same way to achieve substantially the same result; accordingly, the scope of the utility model is limited only by the following claims.
Claims (9)
1. An improved generation DSP+ARM's direct current fills electric pile on-spot calibration device, its characterized in that: the verification device comprises:
the switch box is used for controlling the opening and closing of the charging process of the direct current charging pile; the switch box comprises three switches Q1, Q2 and Q3;
the first charging control unit is used for controlling signal sampling, signal conditioning and AD conversion of the on-site verification of the direct current charging pile; the first charging control unit comprises a DSP module, an ARM module, a first charging device and a signal line concentrator, wherein the first charging device outputs direct-current electric energy and inputs the direct-current electric energy into the signal line concentrator through a first charging control unit interface, the signal line concentrator modulates an input direct-current electric energy signal, the signal line concentrator outputs a modulated charging check signal to the DSP module, and the DSP module and the ARM module interact with each other through an HPI interface; the HPI interface adopts a 16-bit transmission mode, when the verification device starts to operate, the DSP module and the ARM module send a control instruction to an HPI address register, and the HPI address register accesses an HPI address and directs a charging verification signal to the DSP module and the ARM module;
the DSP module is used for calculating a charging check signal; the ARM module is used for calculating the charging check signal in real time; the ARM module adopts an S3C6410 type chip and is used for calculating the charging check signal in real time; the charging device is used for outputting direct-current electric energy to charge the battery; the charging device is a direct-current charging power supply, the charging device comprises an anode and a cathode, the potential of the anode is high, the potential of the cathode is low, when the anode and the cathode of the charging device are communicated with a main circuit of the charging device, a constant potential difference is maintained between two ends of the circuit, so that current from the anode to the cathode is formed in an external circuit, the potential difference between the two electrodes is maintained, and a stable constant current is provided for a battery; the signal line concentrator is used for charging the transfer interface of the check signal line;
the radiator is used for radiating heat of the first charging control unit; the radiator is coupled with two NF-A15PWM mute fans, and the air cooling radiator radiates heat of the first charging control unit in an air cooling mode;
the direct current distribution device is used for protecting the checking device and sending out alarm signals; the direct current power distribution device is positioned in the middle of the circuit for connecting the first charging control unit and the BMS module;
a BMS module for controlling, monitoring and displaying the storage of electrical energy within the battery;
the first charging control unit in the checking device outputs a direct-current electric energy signal to be input into the switch box, the direct-current electric energy signal is input into the direct-current power distribution device through Q1, Q2 and Q3 closed switches in the switch box, and the direct-current power distribution device is used for protecting the checking device and sending out an alarm signal; the direct-current power distribution device outputs a direct-current power signal, and the direct-current power signal is input into a battery to be charged, which is coupled to the BMS module, through the BMS module to complete the charging work of the direct-current charging pile battery; the radiator is connected with the first charging control unit and radiates heat to the first charging control unit in an air cooling mode.
2. The improved dsp+arm direct current charging pile field verification device according to claim 1, wherein: the dual-core chip central controller also comprises a charging control unit interface, a signal conditioning circuit and an AD conversion circuit:
the charging control unit interface is used for connecting a charging device input charging check signal line; the charging control unit interface comprises S-, S+, A-, A+, PE, DC-and DC+, wherein the A+ and A-pins are respectively connected to the positive and negative voltage terminals of the charging device; the DC+ and DC-pins are respectively connected to positive and negative current terminals of the charging device; the S+ pin and the S-pin are connected to an RS485A terminal and an RS485B terminal of the charging device; the PE pin is connected to a grounding wire of the charging device;
the signal conditioning circuit is used for modulating the charging check signal; the signal conditioning circuit inputs unconditioned charging check signals, the forward voltage is grounded through the action of an amplifier, the reverse voltage finally flows into a triode signal conversion center through resistance reduction, the two triode emitter pairs are connected, the charging check signal circulation can be effectively completed, the collector is connected with a plurality of resistance loops, and the conditioned charging check signals are finally output;
an AD conversion circuit for converting the charge check signal into charge check data; the AD conversion circuit adopts an AD603 chip to perform signal conversion;
the charging control interface receives a charging check signal wire input by the charging device, and outputs the charging check signal wire to the dual-core chip central controller through the signal conditioning circuit and the AD conversion circuit.
3. The improved dsp+arm direct current charging pile field verification device according to claim 1, wherein: the DSP module comprises a power operation circuit, an electric energy operation circuit and a counting sampling circuit.
4. The improved dsp+arm direct current charging pile field verification device according to claim 1, wherein: the ARM module comprises a communication interface, a data storage and data display module; the communication interface adopts an RS232 serial port to carry out remote data interaction with an external server, the data storage module adopts a parallel database to store charging check data, and the data display module adopts visual analysis to carry out association mining on the charging check data.
5. The improved dsp+arm direct current charging pile field verification device according to claim 1, wherein: the three switches in the switch box are a first switch transistor, a second switch transistor and a third switch transistor respectively; the first, second and third switching transistors are metal oxide semiconductor field-effect-transistor or insulated gate bipolar transistors.
6. The improved dsp+arm direct current charging pile field verification device according to claim 1, wherein: the verification device further comprises a second charging control unit; the first charging control unit comprises a first charging device; the second charging control unit includes a second charging device.
7. The improved dsp+arm direct current charging pile field verification device according to claim 1, wherein: the direct current power distribution device further comprises a charging plug, the charging plug is coupled to the direct current power distribution device, and the charging plug is a three-vertical, one-horizontal, two-vertical, T-shaped or I-shaped plug.
8. The improved dsp+arm direct current charging pile field verification device according to claim 1, wherein: the field verification device also comprises a field verification user terminal; the on-site verification user terminal is a PIGOSS BSM platform, and the PIGOSS BSM platform monitors the direct-current charging pile in an out-of-band and in-band mode, so that an on-site verifier can know the charging state of the direct-current charging pile in real time; and the on-site verification user terminal receives the charging verification signals input by the first charging control unit and the second charging control unit, performs on-site calculation and analysis through the server, and obtains an analysis result of the direct current charging process.
9. The improved dsp+arm dc charging pile field verification device of claim 1, wherein: the on-site verification device operates in three working modes, wherein a first charging control unit and a second charging control unit are connected in parallel to form a first working mode, the first charging control unit and the second charging control unit are connected in series to form a second working mode, and the first charging control unit and the second charging control unit are connected in parallel and in series-parallel to form a third working mode.
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| CN116609607A (en) * | 2023-07-17 | 2023-08-18 | 北京鼎诚鸿安科技发展有限公司 | Portable calibration device for charging pile |
| CN116609607B (en) * | 2023-07-17 | 2023-10-27 | 北京鼎诚鸿安科技发展有限公司 | Portable calibration device for charging pile |
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