Charging and discharging control circuit, wall hanging seat, charging pile and power supply system

Abstract

The invention discloses a charging and discharging control circuit, a wall-mounted seat, a charging pile and a power supply system, and the circuit comprises a power distribution parameter analysis circuit which is connected with a main control circuit, and is used for receiving charging and discharging selection information outputted by a charging and discharging selection circuit, and collecting commercial power supply information and photovoltaic power supply information to the main control circuit; the mains supply circuit and the photovoltaic power supply circuit are controlled to work according to a power distribution control signal output by the main control circuit; the first end of the main switch circuit is used for receiving power supply voltage output by the commercial power supply circuit and the photovoltaic power supply circuit. The main control circuit is used for controlling the main switch circuit to work, outputting a power distribution control signal to the power distribution parameter analysis circuit and outputting a charging and discharging control signal to the charging and discharging circuit; and the charging and discharging circuit is used for being connected with the portable pile and outputting power supply voltage to the portable pile according to the charging and discharging control signal output by the main control circuit, or transmitting discharging voltage output by the portable pile to a load power supply bus through the main switching circuit, so that the energy utilization rate is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of charging piles, and in particular to a charging and discharging control circuit, a wall mount, a charging pile and a power supply system. Background Art

[0002] With the popularity of new energy vehicles, charging piles, as an important supporting facility, are increasingly in demand. At present, charging piles on the market are mainly divided into two types: wall-mounted charging piles and portable charging piles.

[0003] Wall-mounted charging piles are usually fixedly installed in parking lots, garages and other places. They have advantages such as high power and fast charging speed, but lack flexibility and cannot meet users' needs for outdoor charging. Although portable charging piles are easy to carry and can meet the needs of outdoor charging, they have low power, slow charging speed and single function, and cannot meet the multi-functional needs of home users for photovoltaic power generation, city power supply and reverse power supply for new energy vehicles.

[0004] In addition, most of the existing charging piles can only realize one-way charging function, and cannot supply the excess power of new energy vehicles to home use, resulting in energy waste. Summary of the invention

[0005] The embodiments of the present invention provide a charge and discharge control circuit, a wall mount, a charging pile and a power supply system to solve the problem of low energy utilization rate of existing charging piles.

[0006] A charge and discharge control circuit, comprising a power distribution parameter analysis circuit, a main switch circuit, a main control circuit and a charge and discharge circuit; The power distribution parameter analysis circuit is connected to the main control circuit, and is used to connect the charge and discharge selection circuit, the mains power supply circuit and the photovoltaic power supply circuit, receive the charge and discharge selection information output by the charge and discharge selection circuit, and collect the mains power supply information and the photovoltaic power supply information to the main control circuit, and control the mains power supply circuit and the photovoltaic power supply circuit to work according to the power distribution control signal output by the main control circuit; The first end of the main switch circuit is used to connect the load power supply bus, the mains power supply circuit and the photovoltaic power supply circuit, and the second end of the main switch circuit is connected to the charging and discharging circuit to receive the power supply voltage output by the mains power supply circuit and the photovoltaic power supply circuit; The main control circuit is connected to the power distribution parameter analysis circuit, the main switch circuit and the charge and discharge circuit, and is used to control the operation of the main switch circuit according to the charge and discharge selection information, the city power supply information and the photovoltaic power supply information, and output the power distribution control signal to the power distribution parameter analysis circuit, and output the charge and discharge control signal to the charge and discharge circuit; The charging and discharging circuit is used to connect to a portable pile, and output the supply voltage to the portable pile according to the charging and discharging control signal output by the main control circuit, or transmit the discharge voltage output by the portable pile to the load power supply bus through the main switch circuit.

[0007] Further, the power distribution parameter analysis circuit includes a first communication module, a second communication module, a first passive dry node, a second passive dry node and a data processing module; The first communication module is connected to the mains power supply circuit and the data processing module, and is used to collect the mains power supply information to the data processing module; The second communication module is connected to the photovoltaic power supply circuit and the data processing module, and is used to collect the photovoltaic power supply information to the data processing module; The first passive dry node is connected to a first switch of the mains power supply circuit; The second passive dry node is connected to the second switch of the photovoltaic power supply circuit; The data processing module is connected to the charge and discharge selection circuit and the main control circuit, and is used to receive the charge and discharge selection information output by the charge and discharge selection circuit, and output the charge and discharge selection information, the mains power supply information and the photovoltaic power supply information to the main control circuit; and control the first passive dry node and the second passive dry node according to the power distribution control signal output by the main control circuit to control the operation of the mains power supply circuit and the photovoltaic power supply circuit.

[0008] Furthermore, the first communication module includes a first RS485 module; the second communication module includes a second RS485 module.

[0009] Furthermore, the main control circuit is used to control the main switch circuit to be turned on, and output the main power control signal to the power distribution parameter analysis circuit, and output the charging control signal to the charging and discharging circuit when the charging and discharging selection information is charging and the mains power supply information meets the preset power supply condition; The power distribution parameter analysis circuit is used to control the conduction of the mains power supply circuit and the disconnection of the photovoltaic power supply circuit according to the mains control signal; The charge and discharge control circuit is used to output a charge control guidance signal to the portable pile according to the charge control signal, and output the power supply voltage provided by the mains power supply circuit to the portable pile.

[0010] Furthermore, the main control circuit is used to control the main switch circuit to be turned on, and output the photovoltaic control signal to the power distribution parameter analysis circuit, and output the charging control signal to the charging and discharging circuit when the charging and discharging selection information is charging and the photovoltaic power supply information meets the preset power supply condition; The power distribution parameter analysis circuit is used to control the photovoltaic power supply circuit to be turned on and the mains power supply circuit to be turned off according to the mains control signal; The charge and discharge control circuit is used to output a charge control guide signal to the portable pile according to the charge control signal, and output the power supply voltage provided by the photovoltaic power supply circuit to the portable pile.

[0011] Furthermore, the charge and discharge control circuit further includes a communication interaction module, which is connected to the main control circuit and the portable pile, and is used to output a connection abnormality signal to the main control circuit when the connection between the main control circuit and the portable pile is abnormal; The main control circuit is used to control the main switch circuit to disconnect when receiving the abnormal connection signal.

[0012] Furthermore, the main control circuit is used to control the main switch circuit to be turned on and output an isolation control signal to the power distribution parameter analysis circuit when the charge and discharge selection information is discharge; The power distribution parameter analysis circuit is used to control the disconnection of the mains power supply circuit and the disconnection of the photovoltaic power supply circuit according to the isolation control signal; The charge and discharge control circuit is used to transmit the discharge voltage output by the portable pile to the load power supply bus through the second end of the main switch circuit according to the discharge control signal output by the main control circuit, and feed back the discharge information to the main control circuit; The main control circuit is further used to output a discharge control signal to the charge and discharge control circuit according to the discharge information and load information.

[0013] A wall mount comprises the above-mentioned charge and discharge control circuit.

[0014] A charging pile comprises a portable pile and the above-mentioned wall mount; the first interface of the portable pile is used to connect to the wall mount, and the second interface of the portable pile is used to connect to a vehicle.

[0015] A power supply system, comprising a mains power supply circuit, a photovoltaic power supply circuit, the above-mentioned charging pile, a power load and a vehicle; The charging pile is connected to the mains power supply circuit, the photovoltaic power supply circuit, the power load and the vehicle.

[0016] The embodiment of the present invention provides a charge and discharge control circuit, a wall mount, a charging pile and a power supply system. The charge and discharge control circuit includes a power distribution parameter analysis circuit, a main switch circuit, a main control circuit and a charge and discharge circuit; the power distribution parameter analysis circuit is connected to the main control circuit, and is used to connect the charge and discharge selection circuit, the mains power supply circuit and the photovoltaic power supply circuit, receive the charge and discharge selection information output by the charge and discharge selection circuit, and collect the mains power supply information and the photovoltaic power supply information to the main control circuit, and control the mains power supply circuit and the photovoltaic power supply circuit according to the power distribution control signal output by the main control circuit; the first end of the main switch circuit is used to connect the load power supply bus, the mains power supply circuit and the photovoltaic power supply circuit, and the second end of the main switch circuit is connected to the charge and discharge circuit, and receives the mains power supply circuit and the photovoltaic power supply circuit. The main control circuit is connected with the power distribution parameter analysis circuit, the main switch circuit and the charge and discharge circuit, and is used to control the operation of the main switch circuit according to the charge and discharge selection information, the main power supply information and the photovoltaic power supply information, and output the power distribution control signal to the power distribution parameter analysis circuit, and output the charge and discharge control signal to the charge and discharge circuit; the charge and discharge circuit is used to connect the portable pile, and output the power supply voltage to the portable pile according to the charge and discharge control signal output by the main control circuit, or transmit the discharge voltage output by the portable pile to the load power supply bus through the main switch circuit, so as to realize the main power supply circuit or the photovoltaic power supply circuit to power the portable pile, and at the same time transmit the discharge voltage output by the portable pile to the load power supply bus through the main switch circuit, so as to improve the energy utilization rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0018] Figure 1 Schematic diagram of a charge and discharge control circuit and a power supply system in one embodiment of the present invention.

[0019] In the figure: 1. AC power supply circuit; 2. Photovoltaic power supply circuit; 3. Charging pile; 31. Wall mount; 311. Power distribution parameter analysis circuit; 312. Main switch circuit; 313. Main control circuit; 314. Charging and discharging circuit; 315. Communication interaction module; 32. Portable pile; 4. Power load; 5. Vehicle. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] It should be understood that the present invention can be implemented in different forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, providing these embodiments will make the disclosure thorough and complete and fully convey the scope of the present invention to those skilled in the art. In the accompanying drawings, the sizes and relative sizes of layers and regions may be exaggerated for clarity. The same reference numerals throughout represent the same elements.

[0022] It should be understood that when an element or layer is referred to as being "on, adjacent to, connected to or coupled to other elements or layers, it may be directly on, adjacent to, connected to or coupled to other elements or layers, or there may be intervening elements or layers. In contrast, when an element is referred to as being "directly on, directly adjacent to, directly connected to or directly coupled to other elements or layers, there may be no intervening elements or layers. It should be understood that, although the terms first, second, third, etc. may be used to describe various elements, components, regions, layers and / or parts, these elements, components, regions, layers and / or parts should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or part from another element, component, region, layer or part. Therefore, without departing from the teachings of the present invention, the first element, component, region, layer or part discussed below may be represented as a second element, component, region, layer or part.

[0023] Spatially relative terms such as "under," "beneath," "below," "under," "above," "above," and the like may be used herein for ease of description to describe the relationship of an element or feature shown in the figures to other elements or features. It should be understood that the spatially relative terms are intended to include different orientations of the device in use and operation in addition to the orientations shown in the figures. For example, if the device in the accompanying drawings is flipped, then the elements or features described as "under other elements" or "under" or "under" will be oriented as "above" the other elements or features. Thus, the exemplary terms "under" and "under" may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or other orientations) and the spatial descriptors used herein are interpreted accordingly.

[0024] The purpose of the terms used herein is only to describe specific embodiments and is not intended to be limiting of the present invention. When used herein, the singular forms "a", "an" and " / the" are also intended to include plural forms, unless the context clearly indicates another way. It should also be understood that the terms "consisting of" and / or "comprising" when used in this specification determine the presence of features, integers, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, parts and / or groups. When used herein, the term "and / or" includes any and all combinations of the relevant listed items.

[0025] In order to fully understand the present invention, detailed structures and steps will be presented in the following description to illustrate the technical solutions proposed by the present invention. The preferred embodiments of the present invention are described in detail below, but in addition to these detailed descriptions, the present invention may also have other implementations.

[0026] This embodiment provides a charge and discharge control circuit. Figure 1 As shown, it is applied in a power supply system, which includes a mains power supply circuit 1, a photovoltaic power supply circuit 2, the above-mentioned charging pile 3, an electrical load 4 and a vehicle 5; the charging pile 3 is connected to the mains power supply circuit 1, the photovoltaic power supply circuit 2, the electrical load 4 and the vehicle 5.

[0027] Exemplarily, the charging pile 3 includes a wall mount 31 and a portable pile 32. The wall mount 31 is connected to a first interface of the portable pile 32, and a second interface of the portable pile 32 is used to connect to the vehicle 5. The charge and discharge control circuit in this embodiment is applied in the wall mount 31.

[0028] This embodiment provides a charge and discharge control circuit. Figure 1As shown, it includes a power distribution parameter analysis circuit 311, a main switch circuit 312, a main control circuit 313 and a charge and discharge circuit 314; the power distribution parameter analysis circuit 311 is connected to the main control circuit 313, and is used to connect the charge and discharge selection circuit, the main power supply circuit 1 and the photovoltaic power supply circuit 2, receive the charge and discharge selection information output by the charge and discharge selection circuit, and collect the main power supply information and the photovoltaic power supply information to the main control circuit 313, and control the main power supply circuit 1 and the photovoltaic power supply circuit 2 to work according to the power distribution control signal output by the main control circuit 313; the first end of the main switch circuit 312 is used to connect the load power supply bus, the main power supply circuit 1 and the photovoltaic power supply circuit 2, and the second end of the main switch circuit 312 is connected to the charge and discharge circuit 3 14 is connected to receive the power supply voltage output by the mains power supply circuit 1 and the photovoltaic power supply circuit 2; the main control circuit 313 is connected to the distribution parameter analysis circuit 311, the main switch circuit 312 and the charge and discharge circuit 314, and is used to control the operation of the main switch circuit 312 according to the charge and discharge selection information, the mains power supply information and the photovoltaic power supply information, and output the distribution control signal to the distribution parameter analysis circuit 311, and output the charge and discharge control signal to the charge and discharge circuit 314; the charge and discharge circuit 314 is used to connect to the portable pile 32, and output the power supply voltage to the portable pile 32 according to the charge and discharge control signal output by the main control circuit 313, or transmit the discharge voltage output by the portable pile 32 to the load power supply bus through the main switch circuit 312.

[0029] As an example, the mains power supply circuit 1 is used to connect to the mains power grid. The mains power supply circuit 1 comprises a first switch, one end of which is connected to the mains power grid, and the other end of which is connected to the main switch circuit 312 in the wall mount 31 .

[0030] The photovoltaic power supply circuit 2 is used to connect to the home photovoltaic system. The photovoltaic power supply circuit 2 includes a second switch, one end of which is connected to the home photovoltaic system, and the other end of which is connected to the main switch circuit 312 in the wall mount 31.

[0031] It can be understood that the mains power supply circuit 1 and the photovoltaic power supply circuit 2 can be arranged in a household distribution box.

[0032] As an example, the power distribution parameter analysis circuit 311 is connected to the main control circuit 313, and is used to connect the charge and discharge selection circuit, the mains power supply circuit 1 and the photovoltaic power supply circuit 2, receive the charge and discharge selection information output by the charge and discharge selection circuit, and collect the mains power supply information and the photovoltaic power supply information to the main control circuit 313, and control the mains power supply circuit 1 and the photovoltaic power supply circuit 2 to work according to the distribution control signal output by the main control circuit 313. Specifically, the charge and discharge selection circuit includes a charge and discharge selection switch, and the user manually triggers the charge and discharge selection switch, and the charge and discharge selection information reflects the user's charging or discharging needs. The mains power supply information includes the mains power supply voltage and the mains effective power, etc. The photovoltaic power supply information includes the photovoltaic power supply voltage and the photovoltaic effective power, etc. The distribution control signal is used to switch between mains power supply and photovoltaic power supply. In this example, the power distribution parameter analysis circuit 311 collects the AC power supply information and the photovoltaic power supply information to the main control circuit 313, so that the main control circuit 313 feeds back the distribution control signal according to the charge and discharge selection information, the AC power supply information and the photovoltaic power supply information, and controls the operation of the AC power supply circuit 1 and the photovoltaic power supply circuit 2 according to the distribution control signal, thereby reasonably selecting the power supply circuit from the AC power supply circuit 1 and the photovoltaic power supply circuit 2 according to the distribution control signal.

[0033] As an example, the first end of the main switch circuit 312 is used to connect the load power supply bus, the mains power supply circuit 1 and the photovoltaic power supply circuit 2, and the second end of the main switch circuit 312 is connected to the charge and discharge circuit 314 to receive the power supply voltage output by the mains power supply circuit 1 and the photovoltaic power supply circuit 2. Exemplarily, the load power supply bus is used to connect the household power load 4. In this example, when the main switch circuit 312 is turned on, the wall mount 31 is connected in parallel to the load power supply bus through the main switch circuit 312, and the power supply voltage output by the mains power supply circuit 1 and the photovoltaic power supply circuit 2 is used to supply power to the charge and discharge circuit 314, so as to supply power to the portable pile 32 through the charge and discharge circuit 314, and then charge the vehicle 5 through the portable pile 32.

[0034] As an example, the main control circuit 313 is connected to the power distribution parameter analysis circuit 311, the main switch circuit 312 and the charge and discharge circuit 314, and is used to control the operation of the main switch circuit 312 according to the charge and discharge selection information, the main power supply information and the photovoltaic power supply information, and output the power distribution control signal to the power distribution parameter analysis circuit 311, and output the charge and discharge control signal to the charge and discharge circuit 314. In this example, the main control circuit 313 determines the charge and discharge demand according to the charge and discharge selection information, determines whether the charging conditions are met according to the main power supply information and the photovoltaic power supply information, outputs the power distribution control signal to the power distribution parameter analysis circuit 311, and outputs the charge and discharge control signal to the charge and discharge circuit 314, so as to control the power supply circuit through the power distribution parameter analysis circuit 311, and control the charge and discharge circuit 314 through the charge and discharge control signal, thereby controlling the charging and discharging of the portable pile 32.

[0035] As an example, the charge and discharge circuit 314 is used to connect to the portable pile 32, and output the power supply voltage to the portable pile 32 according to the charge and discharge control signal output by the main control circuit 313, or transmit the discharge voltage output by the portable pile 32 to the load power supply bus through the main switch circuit 312. In this example, when the vehicle 5 needs to be charged, the power distribution parameter analysis circuit 311 selects the mains power supply circuit 1 or the photovoltaic power supply circuit 2 to be turned on according to the power distribution control signal, so that the power supply voltage provided by the mains power supply circuit 1 or the photovoltaic power supply circuit 2 is output to the charge and discharge circuit 314 through the main switch circuit 312. Under the control of the main control circuit 313, the charge and discharge circuit 314 outputs the power supply voltage to the portable pile 32, and charges the vehicle 5 through the portable pile 32. When the vehicle 5 needs to discharge, the main control circuit 313 controls the main switch circuit 312 to turn on, and the power distribution parameter analysis circuit 311 controls the AC power supply circuit 1 and the photovoltaic power supply circuit 2 to be disconnected according to the power distribution control signal. The discharge voltage output by the vehicle 5 is transmitted to the load power supply bus through the main switch circuit 312, thereby supplying power to the household power load 4.

[0036] In this embodiment, the charge and discharge control circuit includes a power distribution parameter analysis circuit 311, a main switch circuit 312, a main control circuit 313 and a charge and discharge circuit 314; the power distribution parameter analysis circuit 311 is connected to the main control circuit 313, and is used to connect the charge and discharge selection circuit, the mains power supply circuit 1 and the photovoltaic power supply circuit 2, receive the charge and discharge selection information output by the charge and discharge selection circuit, and collect the mains power supply information and the photovoltaic power supply information to the main control circuit 313, and control the mains power supply circuit 1 and the photovoltaic power supply circuit 2 to work according to the power distribution control signal output by the main control circuit 313; the first end of the main switch circuit 312 is used to connect the load power supply bus, the mains power supply circuit 1 and the photovoltaic power supply circuit 2, and the second end of the main switch circuit 312 is connected to the charge and discharge circuit 314, and receives the power supply voltage output by the mains power supply circuit 1 and the photovoltaic power supply circuit 2; The main control circuit 313 is connected to the power distribution parameter analysis circuit 311, the main switch circuit 312 and the charge and discharge circuit 314, and is used to control the operation of the main switch circuit 312 according to the charge and discharge selection information, the mains power supply information and the photovoltaic power supply information, and output the power distribution control signal to the power distribution parameter analysis circuit 311, and output the charge and discharge control signal to the charge and discharge circuit 314; the charge and discharge circuit 314 is used to connect the portable pile 32, and output the power supply voltage to the portable pile 32 according to the charge and discharge control signal output by the main control circuit 313, or transmit the discharge voltage output by the portable pile 32 to the load power supply bus through the main switch circuit 312, so as to realize the mains power supply circuit 1 or the photovoltaic power supply circuit 2 to power the portable pile 32, and at the same time transmit the discharge voltage output by the portable pile 32 to the load power supply bus through the main switch circuit 312, so as to improve the energy utilization rate.

[0037] In one embodiment, the power distribution parameter analysis circuit 311 includes a first communication module, a second communication module, a first passive dry node, a second passive dry node and a data processing module; the first communication module is connected to the AC power supply circuit 1 and the data processing module, and is used to collect AC power supply information to the data processing module; the second communication module is connected to the photovoltaic power supply circuit 2 and the data processing module, and is used to collect photovoltaic power supply information to the data processing module; the first passive dry node is connected to the first switch of the AC power supply circuit 1; the second passive dry node is connected to the second switch of the photovoltaic power supply circuit 2; the data processing module is connected to the charge and discharge selection circuit and the main control circuit 313, and is used to receive the charge and discharge selection information output by the charge and discharge selection circuit, and output the charge and discharge selection information, AC power supply information and photovoltaic power supply information to the main control circuit 313; and the first passive dry node and the second passive dry node are controlled according to the power distribution control signal output by the main control circuit 313 to control the operation of the AC power supply circuit 1 and the photovoltaic power supply circuit 2.

[0038] As an example, the first communication module is connected to the voltage sensor and the current sensor in the mains power supply circuit 1, and transmits the mains power supply voltage, the mains power supply current, and the mains effective power to the data processing module. The second communication module is connected to the voltage sensor and the current sensor in the photovoltaic power supply circuit 2, and transmits the photovoltaic power supply voltage and the photovoltaic power supply current to the data processing module. The data processing module receives the charge and discharge selection information output by the charge and discharge selection circuit, outputs the charge and discharge selection information, the mains power supply information, and the photovoltaic power supply information to the main control circuit 313, and controls the first passive dry node and the second passive dry node according to the power distribution control signal output by the main control circuit 313, so that the first switch and the second switch can be controlled respectively through the first passive dry node and the second passive dry node, thereby controlling the mains power supply circuit 1 and the photovoltaic power supply circuit 2 to work.

[0039] In this embodiment, the first communication module is connected to the AC power supply circuit 1 and the data processing module for collecting AC power supply information to the data processing module; the second communication module is connected to the photovoltaic power supply circuit 2 and the data processing module for collecting photovoltaic power supply information to the data processing module to ensure the reliability of the AC power supply information and the photovoltaic power supply information, and the first switch and the second switch are respectively controlled by the first passive dry node and the second passive dry node, thereby controlling the operation of the AC power supply circuit 1 and the photovoltaic power supply circuit 2 to improve the control efficiency and reliability.

[0040] In one embodiment, the first communication module includes a first RS485 module; and the second communication module includes a second RS485 module.

[0041] In this embodiment, the first communication module includes a first RS485 module; the second communication module includes a second RS485 module. The mains power supply information and photovoltaic power supply information are transmitted through the RS485 module, which can achieve long-distance transmission and improve anti-interference ability, with low cost, high reliability and compatibility.

[0042] In one embodiment, the main control circuit 313 is used to control the main switch circuit 312 to turn on when the charge and discharge selection information is charging and the AC power supply information meets the preset power supply conditions, and output the AC control signal to the distribution parameter analysis circuit 311, and output the charging control signal to the charging and discharging circuit 314; the distribution parameter analysis circuit 311 is used to control the AC power supply circuit 1 to turn on and control the photovoltaic power supply circuit 2 to turn off according to the AC control signal; the charging and discharging control circuit is used to output the charging control guide signal to the portable pile 32 according to the charging control signal, and output the power supply voltage provided by the AC power supply circuit 1 to the portable pile 32.

[0043] Exemplarily, the preset power supply conditions include that the power supply voltage satisfies AC220V±20% and the effective power satisfies 6KW or more.

[0044] As an example, the user triggers the charge and discharge selection information for charging through the charge and discharge selection circuit. The main control circuit 313 detects whether the AC power supply voltage in the AC power supply information meets AC220V±20%, and whether the AC effective power meets 6KW or above. If so, the main switch circuit 312 is controlled to be turned on, and the AC control signal is output to the power distribution parameter analysis circuit 311. The power distribution parameter analysis circuit 311 controls the first switch of the AC power supply circuit 1 to be turned on through the first passive dry node, and supplies power to the portable pile 32 through the power supply voltage provided by the AC power supply circuit 1. At the same time, through the charging control signal, the charge and discharge control circuit outputs a charging control guide signal to the portable pile 32 to instruct the portable pile 32 to control the on-board charger of the vehicle 5 to enter the charging mode, so as to realize the charging of the vehicle 5.

[0045] Furthermore, before controlling the main switch circuit 312 to be turned on, the main control circuit 313 also detects whether the portable pile 32 is discharged at this time through the charge and discharge circuit 314 to prevent the wall mount 31 and the portable pile 32 from discharging at the same time, causing potential safety hazards.

[0046] In this embodiment, the main control circuit 313 is used to control the main switch circuit 312 to be turned on, and output the mains control signal to the distribution parameter analysis circuit 311, and output the charging control signal to the charging and discharging circuit 314 when the charge and discharge selection information is charging and the AC power supply information meets the preset power supply conditions; the distribution parameter analysis circuit 311 is used to control the AC power supply circuit 1 to be turned on and control the photovoltaic power supply circuit 2 to be disconnected according to the AC power control signal; the charging and discharging control circuit is used to output the charging control guide signal to the portable pile 32 according to the charging control signal, and output the power supply voltage provided by the AC power supply circuit 1 to the portable pile 32, so as to ensure the safety and reliability during the AC power supply process.

[0047] In one embodiment, the main control circuit 313 is used to control the main switch circuit 312 to turn on and output a photovoltaic control signal to the power distribution parameter analysis circuit 311 and a charging control signal to the charging and discharging circuit 314 when the charge and discharge selection information is charging and the photovoltaic power supply information meets the preset power supply conditions; the power distribution parameter analysis circuit 311 is used to control the photovoltaic power supply circuit 2 to turn on and control the main power supply circuit 1 to turn off according to the AC power control signal; the charging and discharging control circuit is used to output a charging control guide signal to the portable pile 32 according to the charging control signal, and output the power supply voltage provided by the photovoltaic power supply circuit 2 to the portable pile 32.

[0048] Exemplarily, the preset power supply conditions include that the power supply voltage satisfies AC220V±20% and the effective power satisfies 6KW or more.

[0049] As an example, the user triggers the charge and discharge selection information to charge through the charge and discharge selection circuit. The main control circuit 313 detects whether the photovoltaic power supply voltage in the photovoltaic power supply information meets AC220V±20%, and whether the photovoltaic effective power meets 6KW or above. If so, the main switch circuit 312 is controlled to be turned on, and a photovoltaic control signal is output to the distribution parameter analysis circuit 311. The distribution parameter analysis circuit 311 controls the second switch of the photovoltaic power supply circuit 2 to be turned on through the second passive dry node, and supplies power to the portable pile 32 through the power supply voltage provided by the photovoltaic power supply circuit 2. At the same time, through the charging control signal, the charge and discharge control circuit outputs a charging control guide signal to the portable pile 32 to instruct the portable pile 32 to control the on-board charger of the vehicle 5 to enter the charging mode, so as to realize the charging of the vehicle 5.

[0050] Furthermore, before controlling the main switch circuit 312 to be turned on, the main control circuit 313 also detects whether the portable pile 32 is discharged at this time through the charge and discharge circuit 314 to prevent the wall mount 31 and the portable pile 32 from discharging at the same time, causing potential safety hazards.

[0051] In this embodiment, the main control circuit 313 is used to control the main switch circuit 312 to be turned on, and output the photovoltaic control signal to the distribution parameter analysis circuit 311, and output the charging control signal to the charging and discharging circuit 314 when the charging and discharging selection information is charging and the photovoltaic power supply information meets the preset power supply conditions; the distribution parameter analysis circuit 311 is used to control the photovoltaic power supply circuit 2 to be turned on according to the photovoltaic control signal, and control the AC power supply circuit 1 to be disconnected; the charging and discharging control circuit is used to output the charging control guide signal to the portable pile 32 according to the charging control signal, and output the power supply voltage provided by the photovoltaic power supply circuit 2 to the portable pile 32, so as to ensure the safety and reliability of the photovoltaic power supply process.

[0052] In one embodiment, the charge and discharge control circuit also includes a communication interaction module 315, which is connected to the main control circuit 313 and the portable pile 32, and is used to output a connection abnormality signal to the main control circuit 313 when the connection between the main control circuit 313 and the portable pile 32 is abnormal; the main control circuit 313 is used to control the main switch circuit 312 to disconnect when receiving the connection abnormality signal.

[0053] As an example, the communication interaction module 315 is used to communicate with the portable pile 32, and judge whether the connection between the main control circuit 313 and the portable pile 32 is abnormal according to the communication status. When the connection between the main control circuit 313 and the portable pile 32 is abnormal, the connection abnormality signal is output to the main control circuit 313 to control the main switch circuit 312 to disconnect, so as to ensure the safety of the user. Exemplarily, the communication interaction module 315 determines whether the connection between the main control circuit 313 and the portable pile 32 is abnormal through TTL communication and IO communication. IO communication is valid, indicating that the hard link between the portable pile 32 and the wall mount 31 is valid, wherein TTL communication is valid, indicating that the portable pile 32 and the wall mount 31 can achieve normal linkage.

[0054] Exemplarily, TTL communication performs a heartbeat handshake every 5 seconds. If the heartbeat is lost, the wall mount disconnects the main switch circuit 312 to ensure that the external leakage terminal loses power to prevent the risk of electric shock.

[0055] Furthermore, the main control circuit 313 performs handshake and heartbeat with the portable pile 32 through the communication interaction module 315. If the communication is abnormal, the heartbeat continues until the communication is normal. If the heartbeat time exceeds 2 minutes, a fault alarm is issued to perform redundant control.

[0056] If the communication is normal, when the photovoltaic power supply circuit 2 is supplying power, the power distribution parameter analysis circuit 311 obtains the inverter output capacity of the photovoltaic power supply circuit 2 in real time, and notifies the charging and discharging circuit 314 through the main control circuit 313 to control the portable pile 32 to adjust the output power, thereby adjusting the charging power of the vehicle 5 according to the power supply capacity of the photovoltaic power supply circuit 2, thereby improving the safety during the charging process.

[0057] In one embodiment, the main control circuit 313 is used to control the main switch circuit 312 to be turned on and output an isolation control signal to the distribution parameter analysis circuit 311 when the charge and discharge selection information is discharge; the distribution parameter analysis circuit 311 is used to control the disconnection of the AC power supply circuit 1 and the photovoltaic power supply circuit 2 according to the isolation control signal; the charge and discharge control circuit is used to transmit the discharge voltage output by the portable pile 32 to the load power supply bus through the second end of the main switch circuit 312 according to the discharge control signal output by the main control circuit 313, and feedback the discharge information to the main control circuit 313; the main control circuit 313 is also used to output a discharge control signal to the charge and discharge control circuit according to the discharge information and load information.

[0058] As an example, when the main control circuit 313 recognizes that the charge and discharge selection information is discharge, it outputs an isolation control signal to the power distribution parameter analysis circuit 311, and controls the mains power supply circuit 1 to be disconnected and the photovoltaic power supply circuit 2 to be disconnected through the power distribution parameter analysis circuit 311, and isolates from the input total power supply of the home power supply system. And wait for the portable pile 32 to discharge; the portable pile 32 defaults to the discharge mode, that is, the second interface of the portable pile 32 is connected to the vehicle 5, which will trigger the vehicle 5 to discharge; further, the charge and discharge control unit in the portable pile 32 detects that the discharge power supply parameters of the vehicle 5 are normal, that is, the discharge voltage output by the vehicle 5 meets AC220V±20%, then controls the power switch inside the portable pile 32 to close, so that the output end of the portable pile 32 outputs the discharge voltage.

[0059] Furthermore, the main control circuit 313 obtains the switching state of the first switch in the AC power supply circuit 1 and the switching state of the second switch in the photovoltaic power supply circuit 2 fed back by the distribution parameter analysis circuit 311. If they are in the disconnected state, the main switch circuit 312 is controlled to be turned on. The charge and discharge control circuit transmits the discharge voltage output by the portable pile 32 to the load power supply bus through the second end of the main switch circuit 312 according to the discharge control signal output by the main control circuit 313, and feeds back the discharge information to the main control circuit 313.

[0060] Among them, if the switching state of the first switch in the AC power supply circuit 1 and the switching state of the second switch in the photovoltaic power supply circuit 2 are closed, the wireless communication module notifies the APP alarm and the LED module on the wall mount 31 to alarm.

[0061] Finally, the main control circuit 313 is also used to output a discharge control signal to the charge and discharge control circuit according to the discharge information and the load information. Exemplarily, the main control circuit 313 detects whether the discharge voltage, discharge current, and temperature of the key load components are normal. If they are normal, the discharge continues; if they are not normal, the main switch circuit 312 is controlled to be disconnected to stop the discharge; Furthermore, if it is detected that the real-time power of the load in the load information is greater than the maximum discharge power of the vehicle 5, the main switch circuit 312 is controlled to be disconnected to stop discharging.

[0062] In this embodiment, the main control circuit 313 is used to control the main switch circuit 312 to be turned on and output an isolation control signal to the distribution parameter analysis circuit 311 when the charge and discharge selection information is discharge; the distribution parameter analysis circuit 311 is used to control the disconnection of the AC power supply circuit 1 and the photovoltaic power supply circuit 2 according to the isolation control signal; the charge and discharge control circuit is used to transmit the discharge voltage output by the portable pile 32 to the load power supply bus through the second end of the main switch circuit 312 according to the discharge control signal output by the main control circuit 313, and feed back the discharge information to the main control circuit 313; the main control circuit 313 is also used to output the discharge control signal to the charge and discharge control circuit according to the discharge information and the load information, so as to ensure the safety and reliability during the discharge process, and use the discharge voltage provided by the portable pile 32 to power the load power supply bus to provide energy utilization.

[0063] This embodiment provides a wall mount 31 including the above-mentioned charge and discharge control circuit, which will not be described in detail here.

[0064] This embodiment provides a charging pile 3 , including a portable pile 32 and the above-mentioned wall mount 31 ; the first interface of the portable pile 32 is used to connect to the wall mount 31 , and the second interface of the portable pile 32 is used to connect to the vehicle 5 .

[0065] This embodiment provides a power supply system, including a mains power supply circuit 1, a photovoltaic power supply circuit 2, the above-mentioned charging pile 3, an electrical load 4 and a vehicle 5; the charging pile 3 is connected to the mains power supply circuit 1, the photovoltaic power supply circuit 2, the electrical load 4 and the vehicle 5.

[0066] Exemplarily, the wall mount 31 in the charging pile 3 is connected to the mains power supply circuit 1 , the photovoltaic power supply circuit 2 , and the power load 4 , and the wall mount 31 is connected to the vehicle 5 through the portable pile 32 .

[0067] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included in the protection scope of the present invention.

Claims

1. A charge and discharge control circuit, characterized in that: It includes a power distribution parameter analysis circuit, a main switch circuit, a main control circuit and a charging and discharging circuit; The power distribution parameter analysis circuit is connected to the main control circuit, and is used to connect the charge and discharge selection circuit, the mains power supply circuit and the photovoltaic power supply circuit, receive the charge and discharge selection information output by the charge and discharge selection circuit, and collect the mains power supply information and the photovoltaic power supply information to the main control circuit, and control the mains power supply circuit and the photovoltaic power supply circuit to work according to the power distribution control signal output by the main control circuit; The first end of the main switch circuit is used to connect the load power supply bus, the mains power supply circuit and the photovoltaic power supply circuit, and the second end of the main switch circuit is connected to the charging and discharging circuit to receive the power supply voltage output by the mains power supply circuit and the photovoltaic power supply circuit; The main control circuit is connected to the power distribution parameter analysis circuit, the main switch circuit and the charge and discharge circuit, and is used to control the operation of the main switch circuit according to the charge and discharge selection information, the city power supply information and the photovoltaic power supply information, and output the power distribution control signal to the power distribution parameter analysis circuit, and output the charge and discharge control signal to the charge and discharge circuit; The charging and discharging circuit is used to connect to a portable pile, and output the supply voltage to the portable pile according to the charging and discharging control signal output by the main control circuit, or transmit the discharge voltage output by the portable pile to the load power supply bus through the main switch circuit.

2. The charge and discharge control circuit according to claim 1, characterized in that: The power distribution parameter analysis circuit includes a first communication module, a second communication module, a first passive dry node, a second passive dry node and a data processing module; The first communication module is connected to the mains power supply circuit and the data processing module, and is used to collect the mains power supply information to the data processing module; The second communication module is connected to the photovoltaic power supply circuit and the data processing module, and is used to collect the photovoltaic power supply information to the data processing module; The first passive dry node is connected to a first switch of the mains power supply circuit; The second passive dry node is connected to the second switch of the photovoltaic power supply circuit; The data processing module is connected to the charge and discharge selection circuit and the main control circuit, and is used to receive the charge and discharge selection information output by the charge and discharge selection circuit, and output the charge and discharge selection information, the mains power supply information and the photovoltaic power supply information to the main control circuit; and control the first passive dry node and the second passive dry node according to the power distribution control signal output by the main control circuit to control the operation of the mains power supply circuit and the photovoltaic power supply circuit.

3. The charge and discharge control circuit according to claim 2, characterized in that: The first communication module includes a first RS485 module; the second communication module includes a second RS485 module.

4. The charge and discharge control circuit according to claim 1, characterized in that: The main control circuit is used to control the main switch circuit to be turned on, output the main power control signal to the power distribution parameter analysis circuit, and output the charging control signal to the charging and discharging circuit when the charging and discharging selection information is charging and the mains power supply information meets the preset power supply condition; The power distribution parameter analysis circuit is used to control the conduction of the mains power supply circuit and the disconnection of the photovoltaic power supply circuit according to the mains control signal; The charge and discharge control circuit is used to output a charge control guidance signal to the portable pile according to the charge control signal, and output the supply voltage provided by the mains power supply circuit to the portable pile.

5. The charge and discharge control circuit according to claim 1, characterized in that: The main control circuit is used to control the main switch circuit to be turned on, and output the photovoltaic control signal to the power distribution parameter analysis circuit, and output the charging control signal to the charging and discharging circuit when the charging and discharging selection information is charging and the photovoltaic power supply information meets the preset power supply condition; The power distribution parameter analysis circuit is used to control the photovoltaic power supply circuit to be turned on and the mains power supply circuit to be turned off according to the mains control signal; The charge and discharge control circuit is used to output a charge control guide signal to the portable pile according to the charge control signal, and output the power supply voltage provided by the photovoltaic power supply circuit to the portable pile.

6. The charge and discharge control circuit according to claim 4 or 5, characterized in that: The charge and discharge control circuit further includes a communication interaction module, which is connected to the main control circuit and the portable pile, and is used to output a connection abnormality signal to the main control circuit when the connection between the main control circuit and the portable pile is abnormal; The main control circuit is used to control the main switch circuit to disconnect when receiving the connection abnormality signal.

7. The charge and discharge control circuit according to claim 1, characterized in that: The main control circuit is used to control the main switch circuit to be turned on and output an isolation control signal to the power distribution parameter analysis circuit when the charge and discharge selection information is discharge; The power distribution parameter analysis circuit is used to control the disconnection of the mains power supply circuit and the disconnection of the photovoltaic power supply circuit according to the isolation control signal; The charge and discharge control circuit is used to transmit the discharge voltage output by the portable pile to the load power supply bus through the second end of the main switch circuit according to the discharge control signal output by the main control circuit, and feed back the discharge information to the main control circuit; The main control circuit is further used to output a discharge control signal to the charge and discharge control circuit according to the discharge information and load information.

8. A wall mount, characterized in that: It comprises the charge and discharge control circuit as claimed in any one of claims 1 to 7.

9. A charging pile, characterized in that: It comprises a portable pile and a wall mount as claimed in claim 8; the first interface of the portable pile is used to connect to the wall mount, and the second interface of the portable pile is used to connect to a vehicle.

10. A power supply system, characterized in that: It includes a mains power supply circuit, a photovoltaic power supply circuit, the charging pile according to claim 9, a power load and a vehicle; The charging pile is connected to the mains power supply circuit, the photovoltaic power supply circuit, the power load and the vehicle.

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