Electric energy recovery charging pile

Abstract

The invention relates to the field of charging piles, in particular to an electric energy recycling charging pile which comprises an inversion module, a detection module, a data processing module and an execution module. The inverter module converts direct current into alternating current and outputs the alternating current to the detection module, the data processing module, the execution module and a household power supply, the detection module is used for detecting electric energy data of the input end and the output end of the inverter module to obtain detection data, and the data processing module receives the detection data, calculates to obtain a processing signal and sends the processing signal to the execution module. And the on-off of the circuit is controlled through the execution module. The system has the effect of reducing household electricity consumption caused by power failure.

Description

Technical Field

[0001] The present application relates to the field of charging piles, and in particular to an electric energy recovery charging pile. Background Art

[0002] In summer or in emergencies (such as summer typhoons in coastal areas), it is easy to cause power outages at home, affecting life. For example, a typhoon power outage makes the air conditioner unusable, resulting in high temperature and high humidity in residents' homes during the typhoon, which makes the residents' experience poor. The power outage also causes no lights at home at night, affecting work and study. Summary of the invention

[0003] In order to improve the problem of power outages at home affecting life, the present application provides an energy recovery charging pile.

[0004] The present application provides an energy recovery charging pile, which adopts the following technical solution: An electric energy recovery charging pile includes an inverter module, a detection module, a data processing module and an execution module. The inverter module is used to receive input from a new energy vehicle battery, convert direct current into alternating current, and then output it to the detection module, the data processing module, the execution module and home power supply. The detection module is used to detect the electric energy data of the input and output ends of the inverter module to obtain detection data. The data processing module receives the detection data and calculates to obtain a processing signal, so as to control the on-off of the circuit through the execution module.

[0005] By adopting the above technical solution, when there is a power outage at home, the new energy vehicle can be used to invert and discharge through the inverter module to supply power to the home, which fully utilizes the energy storage function of the new energy vehicle battery and reduces the impact of power outages on household electricity consumption in emergencies.

[0006] Optionally, a switching switch is included, wherein the input end of the switching switch is electrically connected to the charging gun, and the two output ends of the switching switch are electrically connected to the inverter module and the power grid respectively. The input end of the switching switch is switched to be electrically connected to different output ends, so as to realize charging of new energy vehicles through the power grid or powering the user's home through the inverter module.

[0007] By adopting the above technical solution, the inverter module is integrated and then switched by switching the switch, which is convenient and fast and reduces the size.

[0008] Optionally, it includes a signal transmission module and a display module, wherein the signal transmission module is used to transmit the processed signal to the display module, and the display module displays the signal for the user to view.

[0009] By adopting the above technical solution, the data is transmitted to the display module through the signal transmission module and displayed to the user for viewing and monitoring, which is more convenient and the working status of the inverter module can be monitored at home.

[0010] The present application provides an auxiliary power recovery method for a power recovery charging pile, which adopts the following technical solution: An auxiliary electric energy recovery method for an electric energy recovery charging pile, comprising: Acquire the detection data and the battery protocol, wherein the detection data includes input voltage data and input current data; Determine input power data according to the input voltage data and the input current data; Determining a battery power range through the battery protocol; The processing signal is determined according to the input power data, the battery power range, and a preset over-limit threshold.

[0011] By adopting the above technical solution, it is possible to automatically determine whether the output of the new energy vehicle battery is safe or normal, thereby playing a protective role and reducing the probability of battery overload output damaging the battery or overload output causing damage to household appliances.

[0012] Optional, including: The battery protocol determines battery internal resistance data, battery heat dissipation data, and obtains time data; Determine estimated battery heating data by using the input power data, the battery internal resistance data, and the battery heat dissipation data; The estimated battery heating data and a preset heating warning threshold determine the processing signal; Determine battery heating speed data by using the estimated battery heating data and the time data; The power supply time data is determined and outputted according to the battery heating speed data, the time data and the heating warning threshold.

[0013] By adopting the above technical solution, the heating condition of the battery can be automatically judged through the current and voltage, so as to automatically control the disconnection, and no temperature sensor is required, which reduces the cost and plays a protective role.

[0014] Optional, including: The detection data includes output voltage data and output current data; The output voltage data and the output current data determine the output power data; Determine output power theoretical data through the input power data and a preset conversion threshold; Determine the inverter additional loss data by using the output power data and the output power theoretical data; Determine the extra loss ratio data by using the inverter extra loss data and the conversion threshold; An aging warning signal is determined and outputted based on the additional loss ratio data and a preset aging warning threshold.

[0015] By adopting the above technical solution, the aging degree of the inverter module can be automatically determined, so that users can repair or replace it in time, improve safety, and also improve the energy utilization rate of new energy vehicle batteries and reduce losses.

[0016] Optional, including: Determine the temperature rise internal resistance parameter through the battery protocol; Determine equivalent battery internal resistance data through the input current data and the input voltage data; Determine estimated internal resistance change data using the equivalent battery internal resistance data and the battery internal resistance data; Determine the estimated temperature rise data by using the estimated internal resistance change data and the temperature rise internal resistance parameter; Determine temperature rise rate data by using the estimated temperature rise data and the time data; Determine the estimated time data by using the temperature rise rate data, the time data, and the fever warning threshold; The new power supply time data is determined by the power supply time data and the estimated time data, and the new power supply time data replaces the original power supply time data and is output.

[0017] By adopting the above technical solution, the temperature calculation is made more precise and the accuracy is improved.

[0018] The present application provides a computer-readable storage medium, which adopts the following technical solution: A computer-readable storage medium stores a computer program that can be loaded by a processor and executed by a method for assisting electric energy recovery in an electric energy recovery charging pile.

[0019] By adopting the above technical solution, the computer program is stored in a computer-readable storage medium.

[0020] In summary, the present application includes at least one of the following beneficial technical effects: 1. It makes full use of the energy storage function of new energy vehicle batteries and reduces the impact of power outages on household electricity consumption in emergencies.

[0021] 2. The inverter module is integrated and then switched by switching the switch, which is convenient and fast and reduces the size.

[0022] 3. Automatically determine whether the output of new energy vehicle batteries is safe or normal, play a protective role, and reduce the probability of battery overload output damaging the battery, or overload output causing damage to household appliances. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of an electric energy recovery charging pile.

[0024] Figure 2 It is a module schematic diagram of an electric energy recovery charging pile.

[0025] Figure 3 is a schematic diagram of the module highlighting the toggle switch.

[0026] Figure 4 The invention is a flow chart of an auxiliary electric energy recovery method of an electric energy recovery charging pile.

[0027] Figure 5 is a flow chart of step S2.

[0028] Figure 6 It is a flowchart of step S3.

[0029] Figure 7 It is a flowchart of step S4.

[0030] Explanation of the accompanying drawings: 1. Inverter module; 11. Charging pile body; 2. Detection module; 3. Data processing module; 4. Execution module; 5. Switch; 6. Signal transmission module; 7. Display module. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-7 This application is described in further detail.

[0032] The present application embodiment discloses an electric energy recovery charging pile. Figure 1 and Figure 2The electric energy recovery charging pile includes a charging pile body 11, an inverter module 1, a detection module 2, a data processing module 3 and an execution module 4. The inverter module 1 can use an external inverter. The input end of the inverter module 1 is used to be plugged into the charging pile body 11, so that the battery of the new energy vehicle is input into the inverter module 1 through the charging gun on the charging pile body 11. The inverter module 1 receives the input of the battery of the new energy vehicle, converts the direct current into alternating current, and outputs it to the detection module 2, the data processing module 3, the execution module 4 and the home power supply through the output end of the inverter module 1. The detection module 2 can use equipment such as an electric energy meter, a voltmeter, an ammeter, etc. that have the function of detecting current and voltage. The number of detection modules 2 is multiple, which are respectively installed on the input end and the output end of the inverter module 1 to detect the electric energy data of the input end and the output end of the inverter module 1 to obtain the detection data. The data processing module 3 receives the detection data and calculates the processing signal, and then controls the on and off of the circuit through the execution module 4. The execution module 4 can use electronic switches, circuit breakers, relays and other equipment that have the function of on and off circuits. There can also be two charging guns on the charging pile body 11, one of which has an anti-reverse device to prevent the new energy vehicle from reversely discharging during charging, such as anti-reverse components such as diodes, and the other is used for the new energy vehicle to invert power supply to the charging pile, that is, to power the inverter module 1.

[0033] Reference Figure 2 The data processing module 3 includes a processor and a database. The database is used to store various threshold data, such as over-limit threshold, fever warning threshold, conversion threshold, aging warning threshold, etc. The processor is used to receive detection data and battery protocol, and call the corresponding threshold data from the database for calculation to obtain a processing signal.

[0034] The processor may include a central processing unit such as a CPU or MPU or a host system built around a CPU or MPU, including hardware or software. After the meter has a processor, people can freely control the metering instrument through programming to make it run according to people's wishes. The processor can control local measurement transmission, remote measurement transmission, remote communication, etc. through internal protocols. Internal protocols refer to all protocols that achieve mutual communication or links within the same metering instrument or the same system, including: human-computer interaction protocols, software / hardware (interface) protocols, chip bus (C-Bus) protocols, internal bus (I-Bus) protocols, etc. Part or all of the protocols. With the development of integrated circuit technology, some protocols that belong to the external bus (E-Bus) protocol are also classified as internal protocols after the external bus (E-Bus) is integrated into the chip.

[0035] Reference Figure 1 and Figure 2, and also includes a signal transmission module 6 and a display module 7. The signal transmission module 6 can be wirelessly transmitted or wiredly transmitted such as cables. The signal transmission module 6 is used to transmit the processed signal obtained by the processor to the display module 7, and the display module 7 displays it for users to view. The display module 7 can be an electronic display screen, a digital display screen, or other devices with display functions. For ease of understanding, the following working conditions are described in detail. For example, in a general high-rise residential building, the charging pile is often installed in the underground garage, and the user often lives on the 20th or 30th floor above the ground. At this time, a connector for the circuit directly connected to the user's home power supply is left in the underground garage. This connector is a socket, that is, the home power supply circuit is directly connected to the power grid and is also connected to the socket in the underground garage. When the power grid is out of power, the input end of the inverter module 1 is connected to the charging pile body 11, and then the output end of the inverter module 1 is plugged into the socket. At this time, the DC output of the new energy vehicle battery is inverted into AC power by the inverter module 1 and output to the user's home, and the display module 7 is placed in the user's home to display the working status of the inverter module 1.

[0036] There are various types and structures of wireless transmission, such as WiFi modules, 3G modules, 4G modules, 5G modules, etc., which use the resources of the linked network to form a network and provide remote communication or remote control functions.

[0037] Reference Figure 3 If the inverter module 1 is integrated in the charging pile body 11 instead of being manually connected externally, it also includes a switch 5. The switch 5 can be a single-pole double-throw switch or other switch or relay with a line switching function. The input end of the switch 5 is electrically connected to the charging gun, and the two output ends of the switch 5 are electrically connected to the inverter module 1 and the power grid respectively. By switching the input end of the switch 5 to electrically connect to different output ends, it is possible to charge the new energy vehicle through the power grid or to supply power to the user's home through the inverter module 1.

[0038] The implementation principle of an energy recovery charging pile in an embodiment of the present application is: when there is a power outage at a user's home, power is supplied to the inverter module 1 through a new energy vehicle, and the inverter module 1 inverts direct current into alternating current to supply power to the user's home. The detection module 2 collects the working status of the inverter module 1, and performs calculations and processing through the data processing module 3. If it is determined that the working status of the inverter module 1 is faulty or dangerous, the circuit is disconnected through the execution module 4.

[0039] The present application embodiment discloses an auxiliary power recovery method for a power recovery charging pile. Figure 4 The auxiliary energy recovery method of the energy recovery charging pile includes the following steps: S1. Obtain detection data and battery protocol. The detection data includes input voltage data and input current data. S11, determining input power data through input voltage data and input current data; S12, determining the battery power range through the battery protocol; S13, determining a processing signal based on input power data, battery power range, and a preset over-limit threshold.

[0040] Details: The battery protocol is obtained by reading the battery after the charging gun is plugged into the new energy vehicle. The battery protocol contains information such as the battery model, rated output power, rated input power, internal resistance, etc. The battery power range is the rated output power, and the over-limit threshold is the range allowed to exceed. If the input power data is 1000W, the battery power range is 700W, and the over-limit threshold is 100W, then 1000>700+100. At this time, the battery output power is too large. At this time, the battery may fail or be in an overload state, which will cause damage to the battery. The corresponding processing signal is output, and the circuit is disconnected by the execution module 4 to stop the battery output.

[0041] Reference Figure 5 , further comprising the following steps: S2. The battery protocol determines the battery internal resistance data, the battery heat dissipation data, and obtains the time data; S21, determining estimated battery heating data by inputting power data, battery internal resistance data, and battery heat dissipation data; S22, estimating battery heating data and a preset heating warning threshold to determine a processing signal; S23, determining battery heating speed data by estimating battery heating data and time data; S24, determining the power supply time data through the battery heating speed data, the time data, and the heating warning threshold, and outputting the data.

[0042] In detail: the battery internal resistance data is the battery internal resistance in the initial state before leaving the factory. The heat generated by the battery can be determined by the input power data and the battery internal resistance data, that is, the output power of the battery is multiplied by the internal resistance and then multiplied by the coefficient to obtain the generated heat, and then the heat dissipation performance data of the battery is subtracted, that is, the battery heat dissipation data is subtracted to obtain the accumulated heat energy of the battery in this time period. The accumulated heat energy is the estimated battery heating data. The heating warning threshold is the limit value of the battery heat. That is, when the estimated battery heating data exceeds the heating warning threshold, it is estimated that the battery temperature may be too high, and the corresponding processing signal is output to disconnect the circuit through the execution module 4; if the time data is 1min, if the estimated battery heating data is 20°, if the time data is 2min, if the estimated battery heating data is 21°, then the battery heating speed data is (21-20) / (2-1)=1min / °, and the heating warning threshold is set to 30°, so that the power supply time data can be obtained as (30-21) / 1=9min, and it is displayed to the user for viewing.

[0043] Reference Figure 6 , further comprising the following steps: S3, the detection data includes output voltage data and output current data; S31, output voltage data and output current data to determine output power data; S32, determining output power theoretical data through input power data and a preset conversion threshold; S33, determining the inverter additional loss data through the output power data and the output power theoretical data; S34, determining the extra loss ratio data through the inverter extra loss data and the conversion threshold; S35. Determine and output an aging warning signal based on the additional loss ratio data and a preset aging warning threshold.

[0044] In detail: the conversion threshold is the theoretical internal resistance influence of the inverter module 1 and the total power consumption of the power supply to the detection module 2 and the data processing module 3. For example, the internal resistance influence will consume 2% of the electricity, and the detection module 2 and the data processing module 3 will consume 5W of electricity. If the input power data is 700W, the theoretical output power theoretical data can be calculated to be 700*(1-2%)-5=681W. If the output power data calculated by the actual detection is 650W, the additional loss data of the inverter is 681-650=31W, which is the increase in loss caused by the increase of internal resistance with the increase of temperature or aging internal resistance. At this time, the additional loss ratio data can be calculated to be 31 / 700=4.4%. Assuming the aging warning threshold is 3%, at this time 4.4>3, the corresponding aging warning signal indicating the aging of the inverter module 1 is output to the user.

[0045] Reference Figure 7 , further comprising the following steps: S4. Determine the temperature rise internal resistance parameter through the battery protocol; S41, determining equivalent battery internal resistance data by inputting current data and inputting voltage data; S42, determining estimated internal resistance change data through equivalent battery internal resistance data and battery internal resistance data; S43, determining estimated temperature rise data by estimating internal resistance change data and temperature rise internal resistance parameters; S44, determining temperature rise rate data by estimating temperature rise data and time data; S45, determining estimated time data through temperature rise rate data, time data, and fever warning threshold; S46, determining new power supply time data according to the power supply time data and the estimated time data, replacing the original power supply time data with the new power supply time data and outputting the data.

[0046] Detailed: The temperature rise internal resistance parameter is the coefficient of the temperature rise that the internal resistance of the battery will produce when it is working, that is, when the battery is working at a power of x, the heat energy coefficient is a, the heat dissipation capacity is b, and the temperature rise is a*xb; the equivalent internal resistance can be calculated by current and voltage, and the equivalent battery internal resistance data is calculated as input voltage data / input current data. New energy vehicle batteries usually have a constant voltage output, and only the input current data will change. If the equivalent battery internal resistance data is c, and the battery internal resistance data is d, the estimated internal change data can be obtained as cd. When the battery internal resistance increases, the heat generation increases, but the heat dissipation performance is difficult to change, so the estimated temperature can be obtained as (a+cd)*xb, and then subtract the original a*xb to obtain the estimated temperature rise data as ((a+cd)*xb)-(a* xb) = (cd) * x, and then divide it by the time data to get the temperature rise rate data. If the time data is 10min, the equivalent battery internal resistance data is d, if the time data is 20min, the equivalent battery internal resistance data is c, then the temperature rise rate data can be obtained as ((cd) * x) / 10. If the fever warning threshold is 20°, the estimated time data can be calculated by 20 / (((cd) * x) / 10), which is the estimated time required for the battery to rise 20° under the current temperature rise rate. Then compare the estimated time data with the power supply time data to obtain the new power supply time data. If the power supply time data is 60min and the estimated time data is 50min, take the smaller value, that is, take 50min as the new power supply time data output and display it to the user.

[0047] The present application embodiment discloses a computer-readable storage medium. Figure 1 The computer-readable storage medium includes a computer program that can be loaded and executed by a processor and that assists in the energy recovery method of the energy recovery charging pile.

[0048] Computer-readable storage media include, for example, various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0049] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An energy recovery charging pile, characterized in that: The invention comprises an inverter module (1), a detection module (2), a data processing module (3) and an execution module (4), wherein the inverter module (1) is used to receive input from a new energy vehicle battery, convert direct current into alternating current and then output it to the detection module (2), the data processing module (3), the execution module (4) and household power supply, the detection module (2) is used to detect electric energy data at the input end and the output end of the inverter module (1) to obtain detection data, and the data processing module (3) receives the detection data and calculates to obtain a processing signal, so as to control the on-off of the circuit through the execution module (4).

2. The electric energy recovery charging pile according to claim 1, characterized in that: The invention comprises a switching switch (5), wherein the input end of the switching switch (5) is electrically connected to the charging gun, and the two output ends of the switching switch (5) are electrically connected to the inverter module (1) and the power grid respectively. By switching the input end of the switching switch (5) to be electrically connected to different output ends, charging of a new energy vehicle through the power grid or power supply to a user's home through the inverter module (1) is achieved.

3. The electric energy recovery charging pile according to claim 1, characterized in that: It comprises a signal transmission module (6) and a display module (7), wherein the signal transmission module (6) is used to transmit a processed signal to the display module (7), and the display module (7) displays the signal for viewing by a user.

4. An auxiliary power recovery method for a power recovery charging pile, using the power recovery charging pile according to claim 1, characterized in that: include: Acquire the detection data and the battery protocol, wherein the detection data includes input voltage data and input current data; Determine input power data according to the input voltage data and the input current data; Determining a battery power range through the battery protocol; The processing signal is determined according to the input power data, the battery power range, and a preset over-limit threshold.

5. The auxiliary power recovery method of the power recovery charging pile according to claim 4, characterized in that: include: The battery protocol determines battery internal resistance data, battery heat dissipation data, and obtains time data; Determine estimated battery heating data by using the input power data, the battery internal resistance data, and the battery heat dissipation data; The estimated battery heating data and a preset heating warning threshold determine the processing signal; Determine battery heating speed data by using the estimated battery heating data and the time data; The power supply time data is determined and outputted according to the battery heating speed data, the time data and the heating warning threshold.

6. The auxiliary power recovery method of the power recovery charging pile according to claim 4, characterized in that: include: The detection data includes output voltage data and output current data; The output voltage data and the output current data determine the output power data; Determine output power theoretical data through the input power data and a preset conversion threshold; Determine the inverter additional loss data by using the output power data and the output power theoretical data; Determine the extra loss ratio data by using the inverter extra loss data and the conversion threshold; An aging warning signal is determined and outputted based on the additional loss ratio data and a preset aging warning threshold.

7. The auxiliary power recovery method of the power recovery charging pile according to claim 5, characterized in that: include: Determine the temperature rise internal resistance parameter through the battery protocol; Determine equivalent battery internal resistance data through the input current data and the input voltage data; Determine estimated internal resistance change data using the equivalent battery internal resistance data and the battery internal resistance data; Determine the estimated temperature rise data by using the estimated internal resistance change data and the temperature rise internal resistance parameter; Determine temperature rise rate data by using the estimated temperature rise data and the time data; Determine the estimated time data by using the temperature rise rate data, the time data, and the fever warning threshold; The new power supply time data is determined by the power supply time data and the estimated time data, and the new power supply time data replaces the original power supply time data and is output.

8. A computer-readable storage medium, characterized in that: A computer program is stored which can be loaded by a processor and executes a method for assisting electric energy recovery of an electric energy recovery charging pile as claimed in any one of claims 4 to 7.

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