Intelligent equipment for locally identifying charging of battery car

Abstract

The utility model discloses a battery car charging local identification intelligent device comprising a signal acquisition unit used for acquiring original voltage and current data of a battery car, an identification control unit, a switch driving unit, a 4G communication unit and a battery car load unit. The identification control unit is electrically connected with the signal acquisition unit, the switch driving unit and the 4G communication unit; through cooperation of the signal acquisition unit, the identification control unit, the switch driving unit and the 4G communication unit, original voltage and current data of a battery car load can be acquired, maximum three paths of original waveform data are sent to the single-chip microcomputer in an SPI interface host mode, an identification model is placed in a local SPI memory, and the identification module is used for identifying the battery car load. The recognition model is directly read through the controller, feature library matching is directly carried out, data real-time performance is high, recognition is fast, the recognition rate is high, and alarming and pushing timeliness is high.

Description

Technical Field

[0001] This utility model relates to the technical field of electric vehicle identification equipment, specifically an intelligent device for local identification of electric vehicle charging. Background Technology

[0002] Most electric bicycle identification devices on the market use cloud services for analysis and identification. They first upload the collected current and voltage data to the cloud for data analysis and judgment, and then feed the data back to the local identification device. Because uploading data takes time, the amount of data uploaded cannot be too large, there will be a delay in data real-time performance, and it is also affected by network signal, resulting in long identification time, low accuracy, and a high risk of false alarms. Therefore, we need to propose a smart device for local identification of electric bicycle charging to solve the above-mentioned problems. This device should be able to directly match features to the database locally, with strong real-time data performance, fast identification, high identification rate, and timely alarm and push notifications. Utility Model Content

[0003] The purpose of this invention is to provide an intelligent device for local identification of electric vehicle charging, which can directly match features in a database, has strong real-time data, fast identification, high identification rate, and timely alarm and push notifications, thereby solving the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a smart device for local identification of electric vehicle charging, comprising a signal acquisition unit, an identification control unit, a switch drive unit, a 4G communication unit, and an electric vehicle load unit for collecting original voltage and current data of the electric vehicle. The identification control unit is electrically connected to the signal acquisition unit, the switch drive unit, and the 4G communication unit, respectively, and the electric vehicle load unit is electrically connected to the signal acquisition unit and the switch drive unit, respectively.

[0005] The identification control unit includes a controller and an SPI memory containing an identification model, the SPI memory being electrically connected to the controller.

[0006] Preferably, the signal acquisition unit includes a current transformer T1, a voltage transformer T2, and a processing chip U1. The current transformer T1 is connected to resistors R3 and R4 arranged in series, and the connection terminals of resistors R3 and R4 are grounded. The voltage transformer T2 is connected to the LIN pin of resistor R1, and the output side of the voltage transformer T2 is connected to resistor R2. The output terminals of the voltage transformer T2 and the current transformer T1 are both connected to the processing chip U1.

[0007] Preferably, the controller is configured as a microcontroller chip U3, pins 10 to 13 of the microcontroller chip U3 are connected to pins 22 to 19 of the processing chip U1 respectively, and pin 1 of the microcontroller chip U3 is connected to pin 14 of the processing chip U1.

[0008] Preferably, the SPI memory is set as a storage chip U2 of model W25Q64, the 3rd pin, the 7th pin and the 8th pin of the storage chip U2 are connected with 3.3V voltage, the 4th pin of the storage chip U2 is grounded, and the 1st pin, the 2nd pin, the 5th pin and the 6th pin of the storage chip U2 are connected with the single-chip microcomputer chip U3 respectively.

[0009] Preferably, the switch driving unit comprises a relay JK1 and a triode Q1 connected with the relay JK1, the emitter of the triode Q1 is grounded, the base of the triode Q1 is connected with a resistor R5, and the other end of the resistor R5 is connected with the 20th pin of the single-chip microcomputer chip U3.

[0010] Preferably, the 4G communication unit comprises a wireless communication chip U4, the 35th pin of the wireless communication chip U4 is connected with an antenna, and the 17th pin and the 18th pin of the wireless communication chip U4 are connected with the 18th pin and the 19th pin of the single-chip microcomputer chip U3 respectively.

[0011] Preferably, one end of the storage battery vehicle load is connected with the LOUT end of the relay JK1, the other end of the storage battery vehicle load is connected with the NIN end of the voltage transformer T1, and the LIN end of the relay JK1 is connected with the input end of the resistor R1.

[0012] Compared with the prior art, the utility model has the advantages that:

[0013] 1. The utility model discloses a signal acquisition unit, recognition control unit, switch driving unit and 4G communication unit cooperate, can gather the original voltage current data of storage battery vehicle load, and send the maximum 3 original waveform data to the single-chip microcomputer through the SPI interface host mode, and the recognition model is placed in the SPI memory in place, and the recognition model is directly read through the controller, and the feature library is directly matched, and the data real -time is strong, and the recognition is fast, and the recognition rate is high, and the time effectiveness is high when alarming and pushing.

[0014] 2. The utility model discloses the cooperation of controller and SPI memory, can directly read the recognition model, and judges according to the recognition algorithm, and the real -time is high, and the real -time judgment accuracy is high. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the system block diagram of the utility model;

[0016] Figure 2 It is the circuit principle diagram of the utility model;

[0017] Figure 3 It is the utility model Figure 2 The local amplification structure diagram of signal acquisition unit in the utility model;

[0018] Figure 4 The utility model discloses Figure 2 The partial amplification structure schematic diagram of identification control unit is shown;

[0019] Figure 5 The utility model discloses Figure 2 The partial amplification structure schematic diagram of switch drive unit is shown. DETAILED DESCRIPTION

[0020] The technical scheme in the embodiments of the utility model will be apparently and completely described in conjunction with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the range of protection of the utility model.

[0021] Please refer to Figures 1-5 The utility model provides a kind of technical scheme: a battery car charging local identification intelligent device, including the signal acquisition unit for gathering battery car original voltage current data, identification control unit, switch drive unit, 4G communication unit and battery car load unit, the identification control unit is electrically connected with signal acquisition unit, switch drive unit and 4G communication unit respectively, and the battery car load unit is electrically connected with signal acquisition unit and switch drive unit respectively;

[0022] As Figure 2 And 3 Shown, the signal acquisition unit includes current transformer T1, voltage transformer T2 and processing chip U1, and processing chip U1 model is V9831, resistance R3 and resistance R4 in series are connected on current transformer T1, and the connecting end of resistance R3 and resistance R4 is grounded, resistance R1 is connected on the LIN foot of voltage transformer T2, resistance R2 is connected on the output side of voltage transformer T2, and the output end of voltage transformer T2 and current transformer T1 are all connected on processing chip U1.

[0023] The original voltage current data collected by V9831 supports the data transmission mode of DMA mode, and sends maximum 3-way original waveform data to external single-chip microcomputer through SPI interface host mode, provides 128-point original waveform data in SPI clock frequency of 819.2KHz in an alternating current cycle of 20ms, and identification model is placed in the SPI memory W25Q64 locally, and U3 directly reads model to judge according to identification algorithm, and real-time is high, and real-time judgment accuracy is high.

[0024] The identification control unit includes controller and SPI memory containing identification model, and the SPI memory is electrically connected with controller.

[0025] The controller is set as a single-chip microcomputer U3, the 10th to 13th pins of the single-chip microcomputer U3 are connected with the 22nd to 19th pins of the processing chip U1 respectively, and the 1st pin of the single-chip microcomputer U3 is connected with the 14th pin of the processing chip U1, the single-chip microcomputer U3 is placed with an identification algorithm, so as to directly read the storage chip U2 model through the single-chip microcomputer U3, and to make local identification judgment of the electric vehicle according to the identification algorithm.

[0026] The SPI memory is set as a storage chip U2 with a model of W25Q64, the 3rd pin, the 7th pin and the 8th pin of the storage chip U2 are connected with a 3.3V voltage, the 4th pin of the storage chip U2 is grounded, and the 1st pin, the 2nd pin, the 5th pin and the 6th pin of the storage chip U2 are connected on the single-chip microcomputer U3 respectively.

[0027] The switch driving unit includes a relay JK1 and a triode Q1 connected with the relay JK1, the emitter of the triode Q1 is grounded, the base of the triode Q1 is connected with a resistor R5, and the other end of the resistor R5 is connected with the 20th pin of the single-chip microcomputer U3.

[0028] The 4G communication unit includes a wireless communication chip U4, the 35th pin of the wireless communication chip U4 is connected with an antenna, and the 17th pin and the 18th pin of the wireless communication chip U4 are connected with the 18th pin and the 19th pin of the single-chip microcomputer U3 respectively.

[0029] One end of the electric vehicle load is connected on the LOUT end of the relay JK1, the other end of the electric vehicle load is connected on the NIN end of the voltage transformer T1, and the LIN end of the relay JK1 is connected with the input end of the resistor R1.

[0030] In use, as Figure 1 and Figure 2As shown, first, the RLY of the switch driving unit is high level to drive the relay JK1 to close, and power supply to the load RL of the electric vehicle, when the electric vehicle is charging, the LOUT and NOUT loop has charging current, at this time the current transformer T1 collects current, after voltage division through resistor R3 and resistor R4, the current charging current signal is sent to the IAP and IAN pins of the processing chip U1 chip V9831, at the same time the voltage between the voltage LIN and NIN on the loop is limited by resistor R1, and then the voltage transformer T2 is entered, and the voltage transformer T2 outputs are divided by resistor R2, and then the current charging voltage is obtained by the UP and UN pins of the processing chip U1, after the processing chip U1 obtains the current charging voltage and current signal of the electric vehicle, data filtering and signal data conversion are carried out, and the current real-time charging voltage, current, power and harmonic parameters are obtained. The processing chip U1 supports the data transmission mode of the DMA mode, and sends the maximum 3-way original waveform data to the external single-chip microcomputer through the SPI interface host mode, and through the SPI interface (SPCK, SPCSN, MISO, MOSI), 128-point original waveform data can be provided to the SPI interface at the SPI clock frequency of 819.2KHz in one AC cycle of 20ms.

[0031] After the processing chip U1 obtains the current charging voltage and current signal of the electric vehicle, the single-chip microcomputer chip U3 adopts the single-chip microcomputer HC32F460JCTA of Huada, receives the original voltage and current data to the chip through the SPI1 interface in the DMA mode, the single-chip microcomputer chip U3 simultaneously reads the identified model from the W25Q64 storage chip U2 through the SPI2 interface, establishes the identified model, and carries out model classification comparison and judgment of the charging data through the algorithm of the naive Bayes classifier and the decision tree, when the data matching is determined as the electric vehicle charging. The RLY of the switch driving unit is low level, the relay JK1 is driven to open the charging loop, and the charging of the load RL of the electric vehicle is stopped, the data is received and sent to the 4G communication unit AIR780E of the wireless communication chip U4 through RXD and TXD, and the electric vehicle charging remote alarm information is pushed to the mobile phone or APP; when the connected electric vehicle load RL is not identified as an electric vehicle, the relay JK1 is always in a closed state to supply power to the load loop.

[0032] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A smart device for local identification of electric vehicle charging, characterized in that: The application relates to a battery car identification device, which comprises a signal acquisition unit for collecting original voltage and current data of a battery car, an identification control unit, a switch driving unit, a 4G communication unit and a battery car load unit, the identification control unit is electrically connected with the signal acquisition unit, the switch driving unit and the 4G communication unit respectively, and the battery car load unit is electrically connected with the signal acquisition unit and the switch driving unit respectively. The identification control unit comprises a controller and an SPI memory containing an identification model, and the SPI memory is electrically connected with the controller.

2. The intelligent device for local identification of battery car charging according to claim 1, characterized in that: The signal acquisition unit comprises a current transformer T1, a voltage transformer T2 and a processing chip U1, the current transformer T1 is connected with resistors R3 and R4 arranged in series, the connection end of the resistors R3 and R4 is grounded, the LIN pin of the voltage transformer T2 is connected with a resistor R1, the output side of the voltage transformer T2 is connected with a resistor R2, and the output end of the voltage transformer T2 and the current transformer T1 are both connected with the processing chip U1.

3. The intelligent device for local identification of electric vehicle charging according to claim 2, characterized in that: The controller is a single-chip microcomputer chip U3, the 10-13 pins of the single-chip microcomputer chip U3 are connected with the 22-19 pins of the processing chip U1 respectively, and the 1 pin of the single-chip microcomputer chip U3 is connected with the 14 pin of the processing chip U1.

4. The intelligent device of claim 3, wherein the device is configured to recognize the battery-powered vehicle based on the local information. The SPI memory is a storage chip U2 with a model of W25Q64, the 3, 7 and 8 pins of the storage chip U2 are connected with a 3.3V voltage, the 4 pin of the storage chip U2 is grounded, and the 1, 2, 5 and 6 pins of the storage chip U2 are connected with the single-chip microcomputer chip U3 respectively.

5. The intelligent device of claim 4, wherein the device is configured to recognize the battery type of the battery-powered vehicle by detecting a voltage of the battery-powered vehicle. The switch driving unit comprises a relay JK1 and a triode Q1 connected with the relay JK1, the emitter of the triode Q1 is grounded, the base of the triode Q1 is connected with a resistor R5, and the other end of the resistor R5 is connected with the 20 pin of the single-chip microcomputer chip U3.

6. The intelligent device of claim 5, wherein the device is configured to: The 4G communication unit comprises a wireless communication chip U4, the 35 pin of the wireless communication chip U4 is connected with an antenna, and the 17 and 18 pins of the wireless communication chip U4 are connected with the 18 and 19 pins of the single-chip microcomputer chip U3 respectively.

7. The intelligent device of claim 6, wherein the device is configured to recognize the battery type of the battery-powered vehicle by detecting a voltage of the battery-powered vehicle. One end of the battery car load is connected with the LOUT end of the relay JK1, the other end of the battery car load is connected with the NIN end of the voltage transformer T1, and the LIN end of the relay JK1 is connected with the input end of the resistor R1.

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