CN215494050U - Use power down detection device on filling electric pile - Google Patents
Use power down detection device on filling electric pile Download PDFInfo
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- CN215494050U CN215494050U CN202121632785.6U CN202121632785U CN215494050U CN 215494050 U CN215494050 U CN 215494050U CN 202121632785 U CN202121632785 U CN 202121632785U CN 215494050 U CN215494050 U CN 215494050U
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Abstract
The utility model discloses a power failure detection device applied to a charging pile, which comprises an alternating current power supply, a power failure detection module, a voltage conversion module, a super capacitor module, a main control module and a wireless communication module, wherein the input end of the power failure detection module is connected with the alternating current power supply, the output end of the power failure detection module is connected with the input end of the main control module, the power failure detection module is used for collecting the output voltage of the alternating current power supply, the main control module judges whether the alternating current power supply is in power failure according to data transmitted by the power failure detection module, and when the alternating current power supply is in power failure, the main control module transmits the data to a background host through the wireless communication module. The power failure detection module acquires the output voltage of the alternating current power supply, and the time required for the subsequent components to fail to work after the power failure is long, so that the super capacitor module has enough time to discharge power to supply power to the rear components, and the main control module has enough time to upload data.
Description
Technical Field
The utility model relates to the technical field of electrical measurement, in particular to a power failure detection device applied to a charging pile.
Background
Along with the popularization of new energy vehicles, the demand of charging piles is increasing day by day. Charging pile gathers in the charging process, if the condition of sudden power failure occurs, charging data can not be uploaded to a background in time, and therefore power failure detection needs to be carried out on the charging pile.
At present, most of power failure detection circuits detect the DC voltage at the rear end of an AC/DC circuit, and because the DC voltage is small and the drop speed is high, the situation that a super capacitor in the circuit does not have enough reaction time to supply power for subsequent components and parts easily occurs, and then charging data stops working without uploading the components and parts.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of overcoming the defects of the prior art and provides a power failure detection device applied to a charging pile.
In order to solve the technical problems, the technical scheme of the utility model is as follows:
a power failure detection device applied to a charging pile comprises an alternating current power supply, a power failure detection module, a voltage conversion module, a super capacitor module, a main control module and a wireless communication module, wherein the input end of the voltage conversion module is connected with the alternating current power supply, the output end of the voltage conversion module is connected with the main control module and the input end of the wireless communication module, and the voltage conversion module is used for converting alternating current voltage of the alternating current power supply into direct current voltage and then supplying power to the main control module and the wireless communication module; the input end of the power failure detection module is connected with the alternating current power supply, the output end of the power failure detection module is connected with the input end of the main control module, the output end of the main control module is connected with the wireless communication module, the wireless communication module is connected with a background host, the power failure detection module is used for collecting the output voltage of the alternating current power supply and sending the collected data to the main control module, the main control module judges whether the alternating current power supply is powered down according to the data transmitted by the power failure detection module, and when the alternating current power supply is powered down, the main control module transmits the data to the background host through the wireless communication module; the input end of the super capacitor module is connected with the output end of the voltage conversion module, the output end of the super capacitor module is connected with the main control module and the input end of the wireless communication module, the voltage conversion module converts alternating voltage of an alternating current power supply into direct voltage and then charges the super capacitor module, and when the main control module judges that the alternating current power supply is powered off, the main control module controls the super capacitor module to discharge, and the main control module supplies power with the wireless communication module.
As an optimal scheme of the power failure detection device applied to the charging pile, the power failure detection device comprises the following components: the power failure detection module comprises an optical coupler, a divider resistor R1, R2 and a diode D1, wherein the anode of a light emitter in the optical coupler is connected with a live wire of an alternating current power supply through the divider resistor R1, the cathode of the light emitter in the optical coupler is connected with a zero wire of the alternating current power supply through the diode D1, the emitting electrode of a light receiver in the optical coupler is grounded, and the collecting electrode of the light receiver in the optical coupler is connected with the input end of the main control module through the divider resistor R2.
As an optimal scheme of the power failure detection device applied to the charging pile, the power failure detection device comprises the following components: the super capacitor module includes super capacitor charge-discharge circuit, super capacitor charge-discharge circuit includes diode D2, current-limiting resistor R3, super capacitor C1 and diode D3, super capacitor C1's one end pass through current-limiting resistor R3 and diode D2 after with the output of voltage transformation module is connected, super capacitor C1's other end ground connection, diode D3 with current-limiting resistor R3 connects in parallel.
As an optimal scheme of the power failure detection device applied to the charging pile, the power failure detection device comprises the following components: the voltage conversion module comprises an AC/DC circuit module and a DC/DC circuit module, the AC/DC circuit module is used for converting alternating current voltage output by the alternating current power supply into direct current voltage, and the DC/DC circuit module is used for supplying power to the main control module and the wireless communication module after regulating the direct current voltage converted by the AC/DC circuit module.
As an optimal scheme of the power failure detection device applied to the charging pile, the power failure detection device comprises the following components: the voltage conversion module adopts a module with the model number of LH15-10B12, the super capacitor module adopts a module with the model number of HT-5R5-Z755VYE10-12.5-2, the main control module adopts a module with the model number of XMC4700F144F2048AAXQMA1, and the wireless communication module adopts a module with the model number of ME3630C 3B.
The utility model has the beneficial effects that:
(1) the power failure detection module acquires the output voltage of an alternating current power supply, namely the AC voltage at the front end of the AC/DC circuit, which is generally 220VAC voltage, and the time required for the follow-up components to work after the AC voltage at the front end of the AC/DC circuit is cut down is long, so that the super capacitor module has enough time to discharge and supply power to the components at the rear part after the AC voltage at the front end of the AC/DC circuit begins to be cut down, and further the main control module has enough time to upload data to a background host through the wireless communication module, thereby ensuring that the charging data can be uploaded in time.
(2) The super capacitor is adopted as the energy storage element in the method, and the method has the advantages of large capacity, quick charging and wide working temperature range.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a system block diagram of a power failure detection apparatus applied to a charging pile according to the present invention;
FIG. 2 is a schematic diagram of a power failure detection circuit of a power failure detection module applied to a power failure detection device of a charging pile according to the present invention;
FIG. 3 is an input waveform diagram of an optocoupler in the power down detection module;
FIG. 4 is a waveform diagram of the output of the optocoupler in the power down detection module;
fig. 5 is a schematic diagram of a super capacitor charging and discharging circuit of a super capacitor module applied to a power failure detection device of a charging pile.
Detailed Description
In order that the present invention may be more readily and clearly understood, a more particular description of the utility model briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings.
The embodiment provides a power failure detection device applied to a charging pile, which comprises an alternating-current power supply, a power failure detection module, a voltage conversion module, a super-capacitor module, a main control module and a wireless communication module.
The alternating current power supply is a 220V alternating current power supply for supplying power to the alternating current charging pile. The transformation module comprises an AC/DC circuit module and a DC/DC circuit module, wherein the input end of the AC/DC circuit module is connected with an alternating current power supply, the output end of the AC/DC circuit module is connected with the input end of the DC/DC circuit module, and the output end of the DC/DC circuit module is connected with the input ends of the main control module and the wireless communication module. The AC/DC circuit module converts alternating current voltage output by the alternating current power supply into direct current voltage and then inputs the direct current voltage to the DC/DC circuit module, and the DC/DC circuit module regulates the received direct current voltage to a proper direct current voltage and then supplies power to the main control module and the wireless communication module.
The power failure detection module comprises an optical coupler, voltage division resistors R1 and R2 and a diode D1. The positive pole of the light-coupled internal light emitter is connected with a live wire of an alternating current power supply through a divider resistor R1, the negative pole of the light-coupled internal light emitter is connected with the positive pole of a diode D1, and the negative pole of a diode D1 is connected with a zero line of the alternating current power supply. The emitting electrode of the light receiver in the optical coupler is grounded, and the collector electrode of the light receiver is connected with the main control module after passing through the divider resistor R2. The power failure detection module collects the output voltage of the alternating current power supply in real time and sends the collected data to the main control module. The main control module judges whether the alternating current power supply is powered down according to the data transmitted by the power down detection module. The specific judgment method is as follows: the direction and the size of the current input by the alternating current power supply periodically change along with time, and the light-emitting diode is connected only when the direction of the current input by the alternating current power supply board flows from the anode to the cathode of the light-emitting diode because the light-emitting diode in the optical coupler is the light-emitting diode, so that the input waveform of the light-emitting diode in the optical coupler is a half-wave waveform as shown in fig. 2, and further the normal output waveform of the optical coupler is a square-wave waveform as shown in fig. 3. And when the main control module cannot continuously detect the square wave signals of about 5 periods, judging that the alternating current power supply is powered down.
The super capacitor module comprises a super capacitor charging and discharging circuit, and the super capacitor charging and discharging circuit comprises a diode D2, a current limiting resistor R3, a super capacitor C1 and a diode D3. One end of the super capacitor C1 is connected with the cathode of the diode D2 through the current limiting resistor R3, and the anode of the diode D2 is connected with the output end of the DC/DC circuit module. The other end of the super capacitor C1 is grounded. The diode D3 is connected in parallel with the current limiting resistor R3, and the anode of the diode D3 is connected between the super capacitor C1 and the current limiting resistor R3. The DC/DC circuit module charges the super capacitor C1. When the alternating current power supply is powered off, the master control module controls the super capacitor to discharge, the super capacitor quickly conducts the diode D3 to supply power to the master control module and the wireless communication module, normal use of the master control module and the wireless communication module within a period of time (generally 10 s) is maintained, and the master control module uploads charging data to the background host through the wireless communication module within the period of time. The charging loop of the super capacitor C1 is D2 → R3 → C1, and the discharging loop thereof is C1 → D3 → rear load.
Preferably, the super capacitor C1 used in the present embodiment is a 7.5F/5.5V combined super capacitor formed by two single super capacitors connected in series, and has a large capacity.
At present, most of power failure detection circuits detect the DC voltage at the rear end of an AC/DC circuit, generally 12V, when the DC voltage is in power failure, the drop speed of the DC voltage is very high, and the DC voltage can drop to 0V within a very short time, so that a super capacitor in the circuit does not have enough reaction time to supply power for subsequent components, and a main control module cannot send charging data. In this embodiment, what the power failure detection module gathered is alternating current power supply's output voltage, what gather promptly is the AC voltage of AC/DC circuit front end, generally is 220VAC voltage, it falls the power supply and can't work required time long to follow-up components and parts, therefore, when the AC voltage of AC/DC circuit front end begins to fall the power supply back, main control module control super capacitor module discharges, super capacitor module has enough time to supply power for the components and parts at rear, and then make main control module have enough time with data upload to the backstage host computer through wireless communication module, guarantee that the charging data can in time upload.
It should be noted that the voltage conversion module, the super capacitor module, the main control module and the wireless communication module adopted in the present invention are all existing functional modules, and the present invention does not improve the functional modules. In this embodiment, the voltage conversion module may adopt a jingshengyang LH15-10B12 module, the super capacitor module may adopt a kaimei HT-5R5-Z755VYE10-12.5-2 module, the main control module may adopt an english-flying-ice XMC4700F144F2048AAXQMA1 module, and the wireless communication module may adopt a zhongxing ME3630C3B module. It can be understood that the functional modules can also adopt functional modules of other types, and only the functional requirements required by the corresponding functional modules need to be met.
In addition to the above embodiments, the present invention may have other embodiments; all technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the present invention.
Claims (4)
1. The utility model provides an use power failure detection device on filling electric pile which characterized in that: comprises an alternating current power supply, a power failure detection module, a voltage conversion module, a super capacitor module, a main control module and a wireless communication module,
the input end of the voltage conversion module is connected with the alternating current power supply, the output end of the voltage conversion module is connected with the input ends of the main control module and the wireless communication module, and the voltage conversion module is used for converting alternating current voltage of the alternating current power supply into direct current voltage and then supplying power to the main control module and the wireless communication module;
the input end of the power failure detection module is connected with the alternating current power supply, the output end of the power failure detection module is connected with the input end of the main control module, the output end of the main control module is connected with the wireless communication module, the wireless communication module is connected with a background host, the power failure detection module is used for collecting the output voltage of the alternating current power supply and sending the collected data to the main control module, the main control module judges whether the alternating current power supply is powered down according to the data transmitted by the power failure detection module, and when the alternating current power supply is powered down, the main control module transmits the data to the background host through the wireless communication module;
the input end of the super capacitor module is connected with the output end of the voltage conversion module, the output end of the super capacitor module is connected with the main control module and the input end of the wireless communication module, the voltage conversion module converts alternating voltage of an alternating current power supply into direct voltage and then charges the super capacitor module, and when the main control module judges that the alternating current power supply is powered off, the main control module controls the super capacitor module to discharge, and the main control module supplies power with the wireless communication module.
2. The power failure detection device applied to the charging pile according to claim 1, wherein: the power failure detection module comprises an optical coupler, a divider resistor R1, R2 and a diode D1, wherein the anode of a light emitter in the optical coupler is connected with a live wire of an alternating current power supply through the divider resistor R1, the cathode of the light emitter in the optical coupler is connected with a zero wire of the alternating current power supply through the diode D1, the emitting electrode of a light receiver in the optical coupler is grounded, and the collecting electrode of the light receiver in the optical coupler is connected with the input end of the main control module through the divider resistor R2.
3. The power failure detection device applied to the charging pile according to claim 1, wherein: the super capacitor module includes super capacitor charge-discharge circuit, super capacitor charge-discharge circuit includes diode D2, current-limiting resistor R3, super capacitor C1 and diode D3, super capacitor C1's one end pass through current-limiting resistor R3 and diode D2 after with the output of voltage transformation module is connected, super capacitor C1's other end ground connection, diode D3 with current-limiting resistor R3 connects in parallel.
4. The power failure detection device applied to the charging pile according to claim 1, wherein: the voltage conversion module comprises an AC/DC circuit and a DC/DC circuit, the AC/DC circuit is used for converting alternating current voltage output by the alternating current power supply into direct current voltage, and the DC/DC circuit is used for supplying power to the main control module and the wireless communication module after regulating the direct current voltage converted by the AC/DC circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121632785.6U CN215494050U (en) | 2021-07-19 | 2021-07-19 | Use power down detection device on filling electric pile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121632785.6U CN215494050U (en) | 2021-07-19 | 2021-07-19 | Use power down detection device on filling electric pile |
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| Publication Number | Publication Date |
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| CN215494050U true CN215494050U (en) | 2022-01-11 |
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| CN202121632785.6U Active CN215494050U (en) | 2021-07-19 | 2021-07-19 | Use power down detection device on filling electric pile |
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