Energy allocation system based on vehicle-mounted battery

Abstract

The invention discloses an energy allocation system based on a vehicle-mounted battery. The energy allocation system comprises a vehicle; the bidirectional conversion module is electrically connected with the vehicle-mounted battery; the alternating current network is electrically connected with the bidirectional conversion module; the main isolation switch module is electrically connected with an alternating current network; the public power grid is electrically connected with the main isolation switch module; the energy allocation module is in communication connection with the vehicle, the bidirectional conversion module, the alternating current network, the main isolation switch module and the public power grid, collects circuit signals through the bidirectional conversion module, and controls connection and disconnection of the main isolation switch module and the public power grid based on the circuit signals. The energy allocation module receives power grid state parameters of the public power grid; and the energy allocation module controls the on-off of the public power grid and the main isolation switch module, controls the on-off of the main isolation switch module and the alternating current network, controls the on-off of the vehicle-mounted battery and the bidirectional conversion module, and controls the on-off of the alternating current network and the bidirectional conversion module based on the power grid state parameters.

Description

Technical Field

[0001] The present invention relates to the technical field of ecosystem energy allocation based on vehicle-mounted batteries, and in particular to an energy allocation system based on vehicle-mounted batteries. Background Art

[0002] With the development of new energy vehicles, battery capacity is getting larger and larger, and the charging and discharging rate is getting faster and faster. When new energy vehicles are out of power, most of them will be charged through the home power grid. The power grid efficiency is low during the trough period of electricity consumption, which may cause excessive pressure on the power grid during peak hours, and the difference in peak and valley electricity prices is huge. In order to solve the problems caused by peak charging, this application designs a system and method for charging and discharging between batteries and the power grid to realize a friendly ecosystem for the on-board power storage system.

[0003] In the existing technology, batteries are charged through the power grid, and there is no solution for batteries to feed power to the power grid; there is no solution for using the vehicle's fuel engine to drive the vehicle's motor to supply power to the household power network; there is no intelligent algorithm that accurately coordinates household appliances, power supply grids, household green energy, household energy storage facilities, and electric vehicles. Summary of the invention

[0004] To solve at least one aspect of the above problems, the present invention provides an energy allocation system based on a vehicle battery, comprising: a vehicle, the vehicle comprising a vehicle battery; a bidirectional conversion module, the bidirectional conversion module being electrically connected to the vehicle battery; an alternating current network, the alternating current network being electrically connected to the bidirectional conversion module; a main isolating switch module, the main isolating switch module being electrically connected to the alternating current network; a public power grid, the public power grid being electrically connected to the main isolating switch module; an energy allocation module, the energy allocation module being respectively connected to the vehicle, the bidirectional conversion module, the alternating current network, and the main isolating switch module. The switch module is communicatively connected to the public power grid, the energy allocation module collects circuit signals through the bidirectional conversion module, and controls the on-off of the main isolation switch module and the public power grid based on the circuit signals, the energy allocation module receives the grid state parameters of the public power grid, and the energy allocation module controls the on-off of the public power grid and the main isolation switch module, controls the on-off of the main isolation switch module and the AC power network, controls the on-board battery and the bidirectional conversion module, and controls the on-off of the AC power network and the bidirectional conversion module based on the grid state parameters.

[0005] Preferably, the main isolating switch module includes an AC bidirectional interface circuit, a grounding protection circuit and a leakage protection circuit, the circuit signal includes a current signal, a voltage signal, a temperature signal of the AC bidirectional interface circuit, a grounding protection sampling signal of the grounding protection circuit, and a leakage sampling signal of the leakage protection circuit, and the energy allocation module controls the on and off of the AC bidirectional interface circuit based on the circuit signal.

[0006] Preferably, the AC power network includes a first interface circuit, a second interface circuit, a third interface circuit and a fourth interface circuit, the input end of the first interface circuit is used to connect the main isolating switch module, the output end of the first interface circuit is used to connect the bidirectional conversion module, the input end of the second interface circuit is used to connect the bidirectional conversion module, the output end of the second interface circuit is used to connect the main isolating switch module, the AC power network includes a multi-way AC isolating switch circuit, the output end of the multi-way AC isolating switch circuit is connected to AC electrical appliances, the input end of the third interface circuit is used to connect the main isolating switch module, the output end of the third interface circuit is used to connect the input end of the multi-way AC isolating switch circuit, the input end of the fourth interface circuit is used to connect the bidirectional conversion module, and the output end of the fourth interface circuit is used to connect the input end of the multi-way AC isolating switch circuit.

[0007] Preferably, the bidirectional conversion module includes a first conversion circuit and a second conversion circuit, the input end of the first conversion circuit is used to connect to the AC power network, the output end of the first conversion circuit is used to connect to the vehicle battery, the input end of the second conversion circuit is used to connect to the vehicle battery, and the output end of the second conversion circuit is used to connect to the AC power network.

[0008] Preferably, it also includes an energy storage battery, and the bidirectional conversion module also includes a third conversion circuit, the input end of the third conversion circuit is connected to the energy storage battery, the output end of the third conversion circuit is connected to the AC power network, and the energy storage battery is electrically connected to the output end of the first conversion circuit.

[0009] Preferably, the energy storage battery includes a battery management system, and the energy allocation module is communicated with the management system of the energy storage battery to obtain parameters of the energy storage battery, and the energy storage battery parameters include the remaining power of the energy storage battery, the output power of the energy storage battery, the maximum chargeable power of the energy storage battery, the maximum chargeable current of the energy storage battery, and the maximum chargeable voltage of the energy storage battery.

[0010] Preferably, a green energy module is also included, and the bidirectional conversion module also includes a fourth conversion circuit, the input end of the fourth conversion circuit is used to connect the green energy module, and the output end of the fourth conversion circuit is used to connect the energy storage battery and the vehicle battery.

[0011] Preferably, the energy allocation module controls the on-off of the fourth conversion circuit according to the energy storage battery parameters.

[0012] Preferably, the energy allocation module obtains the vehicle-mounted battery parameters of the vehicle-mounted battery through the vehicle, and controls the on-off of the fourth conversion circuit according to the vehicle-mounted battery parameters, and the battery parameters include the remaining power of the vehicle-mounted battery, the output power of the vehicle-mounted battery, the maximum chargeable power of the vehicle-mounted battery, the maximum chargeable current of the vehicle-mounted battery, and the maximum chargeable voltage of the vehicle-mounted battery.

[0013] Preferably, the energy allocation module includes a metering unit, which is used to determine and collect the power consumption output by the public power grid to the AC power network and the power supply output by the green energy to the public power grid, and the metering unit determines the electricity bill based on the power consumption and the power supply.

[0014] Preferably, it further comprises a mobile terminal, the mobile terminal is communicatively connected with the energy allocation module, the energy allocation module outputs an alarm signal in response to the disconnection of the AC bidirectional interface circuit, and the mobile terminal receives the alarm signal.

[0015] Preferably, the grid status parameters include a public grid voltage. When the public grid voltage is lower than a preset voltage threshold, the energy allocation module outputs a first allocation instruction through the mobile terminal, and the allocation instruction is used to prompt the connection of the vehicle battery and the second conversion circuit.

[0016] Preferably, the grid status parameters also include peaks and troughs, and the energy allocation module outputs the first allocation instruction through the mobile terminal when the public grid is at a peak, and the energy allocation module outputs the second allocation instruction through the mobile terminal when the public grid is at a trough, and the second allocation instruction is used to prompt the connection between the vehicle battery and the first conversion circuit.

[0017] Preferably, when the remaining power of the on-board battery is fully charged, the energy allocation module controls the second conversion circuit to be turned on in response to a peak or power outage state of the public power grid.

[0018] Preferably, the vehicle receives the grid state parameter through the energy allocation module, and outputs prompt information for connecting to the first conversion circuit when the public grid is at a trough.

[0019] Preferably, the energy allocation module receives the power demand of the AC power network and the power demand curve of time and weather, and adjusts the AC power network and the bidirectional conversion module according to the power demand curve.

[0020] Preferably, the vehicle further comprises a generator, wherein the generator is used to be connected to an input end of the second conversion circuit.

[0021] The energy allocation system based on vehicle batteries of the present invention has the following beneficial effects: the energy of the vehicle batteries can be transmitted to the outside of the vehicle through the DC charging interface; the vehicle energy storage system serves as a peak-valley balancing function for the power grid; and it combines a variety of charging methods and energy allocation strategies at the same time, which is conducive to improving the efficiency of the power grid, utilizing the difference in electricity prices to bring benefits to customers, and promoting the realization of emission reduction and carbon neutrality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to better understand the above and other purposes, features, advantages and functions of the present invention, reference may be made to the embodiments shown in the accompanying drawings. The same reference numerals in the accompanying drawings refer to the same components. It should be understood by those skilled in the art that the accompanying drawings are intended to schematically illustrate the preferred embodiments of the present invention and have no limiting effect on the scope of the present invention, and the components in the drawings are not drawn to scale.

[0023] Figure 1 The structure block diagram of the energy allocation system based on the vehicle battery according to an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0024] The following is a description of exemplary embodiments of the present disclosure in conjunction with the accompanying drawings, including various details of the embodiments of the present disclosure to facilitate understanding, which should be considered as merely exemplary. Therefore, it should be recognized by those of ordinary skill in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the present disclosure. Similarly, for the sake of clarity and conciseness, descriptions of well-known functions and structures are omitted in the following description.

[0025] As used herein, the term "including" and its variations mean open inclusion, i.e., "including but not limited to". Unless otherwise stated, the term "or" means "and / or". The term "based on" means "based at least in part on". The terms "an example embodiment" and "an embodiment" mean "at least one example embodiment". The term "another embodiment" means "at least one additional embodiment". The terms "first", "second", etc. may refer to different or the same objects. Other explicit and implicit definitions may also be included below.

[0026] In order to at least partially solve one or more of the above-mentioned problems and other potential problems, an embodiment of the present disclosure proposes an energy allocation system based on a vehicle battery, comprising: a vehicle, the vehicle comprising a vehicle battery; a bidirectional conversion module, the bidirectional conversion module being electrically connected to the vehicle battery; an alternating current network, the alternating current network being electrically connected to the bidirectional conversion module; a main isolating switch module, the main isolating switch module being electrically connected to the alternating current network; a public power grid, the public power grid being electrically connected to the main isolating switch module; an energy allocation module, the energy allocation module being communicatively connected to the vehicle, the bidirectional conversion module, the alternating current network, the main isolating switch module and the public power grid respectively, the energy allocation module collecting circuit signals through the bidirectional conversion module, and controlling the on-off of the main isolating switch module and the public power grid based on the circuit signals, the energy allocation module receiving power grid state parameters of the public power grid, and controlling the on-off of the public power grid and the main isolating switch module, controlling the on-off of the main isolating switch module and the alternating current network, controlling the on-off of the vehicle battery and the bidirectional conversion module, and controlling the on-off of the alternating current network and the bidirectional conversion module based on the power grid state parameters.

[0027] Specifically, Figure 1 As shown, the vehicle is a new energy electric vehicle or a hybrid vehicle including an on-board battery. The bidirectional conversion module is used to provide an AC and DC conversion interface circuit. The AC network includes an AC power supply circuit and household AC appliances, including a low-power lighting circuit, a low-power small appliance circuit, a low-power large appliance circuit, a high-power appliance circuit, etc. The on-board battery is connected to the AC network through a bidirectional conversion module to realize charging of household AC appliances in the AC network through the on-board battery when necessary, or to connect the on-board battery to the AC network through the bidirectional conversion module for charging. The main isolation switch module is used to connect the AC network and the public power grid. The main isolation switch module has amplitude modulation, frequency modulation, and phase modulation functions to make the replication, frequency, and phase of the current passing through the main isolation switch module consistent. The energy allocation module is a control module set on a cloud platform or locally. The energy allocation module has a communication unit to realize communication connection with the vehicle, the bidirectional conversion module, the AC network, the main isolation switch module, and the public power grid. The bidirectional conversion module, the AC network and the main isolating switch module respectively include their own control units and communication units. The controllers of the bidirectional conversion module, the AC network and the main isolating switch module are respectively connected to the energy allocation module through their own communication units to receive control instructions from the energy allocation module. The communication unit includes a home network router function, a vehicle communication CAN, Bluetooth, etc.

[0028] The main isolating switch module includes an electromagnetic switch or a digital switch. The control unit of the main isolating switch module receives the control instruction of the energy allocation module, and controls the closing or opening of the electromagnetic switch or the digital switch based on the received control instruction to realize the connection or disconnection of the electrical connection between the public power grid and the main isolating switch module. The main isolating switch module has the functions of uninterrupted connection and isolating switch between the AC network and the public power grid.

[0029] The energy dispatching module obtains the grid status parameters of the public grid through a communication connection with the public grid, and generates one or more control instructions based on the obtained grid status parameters, for controlling the borrowing or disconnection of the electrical connection between the public grid and the main isolating switch module, the main isolating switch module and the AC power network, the on-board battery and the bidirectional conversion module, and one or more of the AC power network and the bidirectional conversion module.

[0030] In some embodiments, the main isolating switch module includes an AC bidirectional interface circuit, a grounding protection circuit and a leakage protection circuit. The circuit signals include current signals, voltage signals, and temperature signals of the AC bidirectional interface circuit, grounding protection sampling signals of the grounding protection circuit, and leakage sampling signals of the leakage protection circuit. The energy allocation module controls the on and off of the AC bidirectional interface circuit based on the circuit signals.

[0031] Specifically, in terms of circuit structure, the main isolating switch module includes an AC bidirectional interface circuit, a grounding protection circuit and a leakage protection circuit. The AC bidirectional interface circuit is used to connect the AC network and the public power grid, and the voltmeter sampling sensor, the ammeter sampling sensor and the temperature sensor are arranged on the AC bidirectional interface circuit.

[0032] The voltmeter sampling sensor collects the voltage signal of the AC bidirectional interface circuit. When the voltage signal exceeds the overvoltage threshold, the energy allocation module generates a control instruction to control the switch or connector in the AC bidirectional interface circuit to disconnect. When the voltage signal is less than the undervoltage threshold, the energy allocation module generates a control instruction to control the switch or connector in the AC bidirectional interface circuit to disconnect.

[0033] The ammeter sampling sensor collects the current signal of the AC bidirectional interface circuit. When the current signal exceeds the overcurrent threshold or is short-circuited, the energy allocation module generates a control instruction to control the switch or connector in the AC bidirectional interface circuit to disconnect.

[0034] The temperature sensor collects the temperature signal of the AC bidirectional interface circuit. When the temperature signal exceeds the temperature threshold, the energy allocation module generates a control instruction to control the switch or connector in the AC bidirectional interface circuit to disconnect.

[0035] The ground protection sampling signal is received from the ground protection circuit, and when the energy allocation module determines that the signal fails, it generates a control instruction to control the switch or connector in the AC bidirectional interface circuit to disconnect.

[0036] When receiving the ground leakage sampling signal from the leakage protection circuit and the energy allocation module determines that the signal is faulty, it generates a control instruction to control the switch or connector in the AC bidirectional interface circuit to disconnect.

[0037] In some embodiments, the AC network includes a first interface circuit, a second interface circuit, a third interface circuit and a fourth interface circuit, the input end of the first interface circuit is used to connect to the main isolating switch module, the output end of the first interface circuit is used to connect to the bidirectional conversion module, the input end of the second interface circuit is used to connect to the bidirectional conversion module, the output end of the second interface circuit is used to connect to the main isolating switch module, the AC network includes multiple AC isolating switch circuits, the output ends of the multiple AC isolating switch circuits are connected to AC electrical appliances, the input end of the third interface circuit is used to connect to the main isolating switch module, the output end of the third interface circuit is used to connect to the input end of the multiple AC isolating switch circuits, the input end of the fourth interface circuit is used to connect to the bidirectional conversion module, and the output end of the fourth interface circuit is used to connect to the input end of the multiple AC isolating switch circuits.

[0038] Specifically, the multi-channel AC isolation switch circuit is used to isolate the interfaces of each household appliance to ensure safety. The multi-channel AC isolation switch circuit includes a household appliance unidirectional interface for transmitting electricity provided by the system to the household appliance. The first interface circuit, the second interface circuit, the third interface circuit and the fourth interface circuit all include electromagnetic switches for controlling the connection or disconnection of each circuit. The control unit of the AC network is electrically connected to the first interface circuit, the second interface circuit, the third interface circuit and the fourth interface circuit. The control unit of the AC network receives control instructions through a communication connection with the energy allocation module, and controls the connection or disconnection of the electromagnetic switches in the first interface circuit, the second interface circuit, the third interface circuit and the fourth interface circuit based on the received control instructions to realize the connection or disconnection of one circuit or multiple circuits.

[0039] The input end of the first interface circuit is connected to the public power grid through the AC bidirectional interface circuit of the main isolating switch module, and the output end of the first interface circuit is connected to the bidirectional conversion module. The first interface circuit is connected to the bidirectional conversion module in the public power grid, and the first interface circuit is turned on when the public power grid outputs electric energy to realize the transmission of electric energy from the public power grid to the vehicle battery.

[0040] The input end of the second interface circuit is connected to the vehicle battery through the bidirectional conversion module, and the output end of the second interface circuit is connected to the public power grid through the AC bidirectional interface circuit of the main isolation switch module. The second interface circuit is connected when the vehicle battery outputs electric energy to realize the transmission of electric energy from the vehicle battery to the public power grid.

[0041] The input end of the third interface circuit is connected to the public power grid through the AC bidirectional interface circuit of the main isolating switch module, and the output end of the third interface circuit is connected to household appliances through the multi-channel AC isolating switch circuit. The third interface circuit is connected when the public power grid supplies power to the household appliances.

[0042] The input end of the fourth interface circuit is connected to the vehicle battery through a bidirectional conversion module, the output end of the fourth interface circuit is connected to the household appliance through a multi-channel AC isolation switch circuit, and the fourth interface circuit is turned on when the vehicle battery supplies power to the household appliance.

[0043] In some embodiments, the bidirectional conversion module includes a first conversion circuit and a second conversion circuit. The input end of the first conversion circuit is used to connect to the AC power network, and the output end of the first conversion circuit is used to connect to the vehicle battery. The input end of the second conversion circuit is used to connect to the vehicle battery, and the output end of the second conversion circuit is used to connect to the AC power network.

[0044] Specifically, the input end of the first conversion circuit is connected to the output end of the first interface circuit, the output end of the first conversion circuit is connected to the vehicle battery, and the first conversion circuit is turned on when the public power grid outputs electric energy to the vehicle battery. The input end of the second conversion circuit is connected to the vehicle battery, the output end of the second conversion circuit is connected to the input end of the second interface circuit, and the second conversion circuit is turned on when the vehicle battery outputs electric energy to the public power grid.

[0045] In some embodiments, an energy storage battery is also included, and the bidirectional conversion module also includes a third conversion circuit, the input end of the third conversion circuit is connected to the energy storage battery, the output end of the third conversion circuit is connected to the AC power network, and the energy storage battery is electrically connected to the output end of the first conversion circuit.

[0046] Specifically, the energy storage battery uses the battery of a new energy vehicle. For example, when the new energy vehicle is scrapped or the on-board power battery decays to the point where it cannot meet the user's daily driving needs, it can be used as a home energy storage battery. The disassembled battery is first supplemented by wind power and photovoltaic power, and secondly by the public power grid during the trough period, to keep the energy storage battery fully charged (or when the remaining power of the energy storage battery is any preset threshold value). When needed, the energy storage battery is used to discharge the power instead of the public power grid to achieve step-by-step utilization.

[0047] The input end of the third conversion circuit is connected to the energy storage battery, the output end of the third conversion circuit is connected to the input end of the second interface circuit, and the third conversion circuit is turned on when the energy storage battery outputs electric energy to the public power grid. At the same time, the second interface circuit is turned on when the energy storage battery outputs electric energy to the public power grid.

[0048] The input end of the third conversion circuit is connected to the energy storage battery, the output end of the third conversion circuit is connected to the input end of the fourth interface circuit, and the third conversion circuit is turned on when the energy storage battery supplies power to household AC appliances in the AC network, and the fourth interface circuit is turned on at the same time.

[0049] The energy storage battery is connected to the output end of the first conversion circuit, the input end of the first conversion circuit interface is connected to the output end of the first interface circuit, the input end of the first interface circuit is connected to the public power grid through the AC bidirectional interface circuit of the main isolation switch module, and when the public power grid outputs electric energy to the energy storage battery, the AC bidirectional interface circuit, the first interface circuit, and the first conversion circuit are connected.

[0050] In some embodiments, the energy storage battery includes a battery management system, and the energy allocation module is communicated with the management system of the energy storage battery to obtain parameters of the energy storage battery, and the energy storage battery parameters include the remaining power of the energy storage battery, the output power of the energy storage battery, the maximum chargeable power of the energy storage battery, the maximum chargeable current of the energy storage battery, and the maximum chargeable voltage of the energy storage battery.

[0051] Specifically, the battery management system of the energy storage battery includes a communication unit, and the energy allocation module obtains the energy storage battery parameters by communicating with the management system of the energy storage battery, and controls the connection or disconnection of the AC bidirectional interface circuit, the second interface circuit, the fourth interface circuit, the first conversion circuit and the fourth conversion circuit according to the energy storage battery parameters.

[0052] In some embodiments, a green energy module is also included, and the bidirectional conversion module also includes a fourth conversion circuit, the input end of the fourth conversion circuit is used to connect to the green energy module, and the output end of the fourth conversion circuit is used to connect to the energy storage battery and the vehicle battery.

[0053] Specifically, the green energy module includes a solar energy unit for converting solar energy into electrical energy, a wind energy unit for converting wind energy into electrical energy, etc. The fourth conversion circuit is used to connect the green energy module and the energy storage battery, the green energy module and the vehicle battery, and the fourth conversion circuit is turned on when the green energy module outputs electrical energy to the energy storage battery and / or the vehicle battery. In some embodiments, the energy allocation module controls the on-off of the fourth conversion circuit according to the parameters of the energy storage battery.

[0054] Specifically, the energy allocation module controls the on and off of the fourth conversion circuit according to one or more of the remaining power of the energy storage battery, the output power of the energy storage battery, the maximum chargeable power of the energy storage battery, the maximum chargeable current of the energy storage battery, and the maximum chargeable voltage of the energy storage battery. For example, when the remaining power of the energy storage battery is 100% (or when the remaining power of the energy storage battery is any preset threshold), the fourth conversion circuit is disconnected; when the charging current is greater than the maximum chargeable current of the energy storage battery or when the charging voltage is greater than the maximum chargeable voltage of the energy storage battery, the fourth conversion circuit is disconnected; when the output power of the energy storage battery is less than the set threshold, the fourth conversion circuit is connected; when the charging power of the energy storage battery is less than the maximum chargeable power of the energy storage battery, the fourth conversion circuit is connected.

[0055] In some embodiments, the energy allocation module obtains the vehicle-mounted battery parameters of the vehicle-mounted battery through the vehicle, and controls the on-off of the fourth conversion circuit according to the vehicle-mounted battery parameters. The battery parameters include the remaining power of the vehicle-mounted battery, the output power of the vehicle-mounted battery, the maximum chargeable power of the vehicle-mounted battery, the maximum chargeable current of the vehicle-mounted battery, and the maximum chargeable voltage of the vehicle-mounted battery.

[0056] Specifically, the vehicle battery and the energy storage battery are selectively connected to the output end of the fourth conversion circuit. For example, when the remaining power of the vehicle battery is 100% (or when the remaining power of the vehicle battery is any preset threshold), the fourth conversion circuit is disconnected; when the charging current is greater than the maximum chargeable current of the vehicle battery or when the charging voltage is greater than the maximum chargeable voltage of the vehicle battery, the fourth conversion circuit is disconnected; when the output power of the vehicle battery is less than the set threshold, the fourth conversion circuit is connected; when the charging power of the vehicle battery is less than the maximum chargeable power of the energy storage battery, the fourth conversion circuit is connected.

[0057] In some embodiments, the energy allocation module includes a metering unit, which is used to determine the power consumption output by the public power grid to the AC power network and the power supply output by green energy to the public power grid. The metering unit determines the electricity bill based on the power consumption and the power supply.

[0058] Specifically, the energy allocation module measures the consumed power obtained from the public power grid and the supplied power transmitted to the public power grid by collecting the voltage and current in the circuit. The energy allocation module calculates the electricity fee corresponding to the consumed power and the remuneration corresponding to the supplied power according to the electricity price obtained from the public power grid, thereby generating an electricity bill.

[0059] In some embodiments, a mobile terminal is further included, and the mobile terminal is communicatively connected to the energy allocation module. The energy allocation module outputs an alarm signal in response to the disconnection of the AC bidirectional interface circuit, and the mobile terminal receives the alarm signal.

[0060] Specifically, the mobile terminal is a user's mobile phone, notebook, etc. The mobile terminal receives the alarm signal through a communication connection with the energy allocation module. When the energy allocation module controls the disconnection of the AC bidirectional interface circuit based on the circuit signal, it outputs an alarm signal to the mobile terminal.

[0061] In some embodiments, the grid status parameters include a public grid voltage. When the public grid voltage is lower than a preset voltage threshold, the energy allocation module outputs a first allocation instruction through the mobile terminal, and the allocation instruction is used to prompt the connection of the vehicle battery and the second conversion circuit.

[0062] Specifically, the energy allocation module obtains the public grid voltage through the communication connection of the public grid. When the public grid voltage is lower than the preset voltage threshold, it is judged that the power supply capacity of the public grid is insufficient, and a first allocation instruction is used to prompt the vehicle battery to be connected to realize the transmission of electric energy from the vehicle battery to the public grid. It can be understood by those skilled in the art that the vehicle is not electrically connected to the energy allocation system in real time. Alternatively, in another embodiment, the first allocation instruction is used to prompt the connection of the energy storage battery and the second conversion circuit to realize the transmission of electric energy from the energy storage battery to the public grid.

[0063] In some embodiments, the grid status parameters also include peaks and troughs. The energy allocation module outputs a first allocation instruction through the mobile terminal when the public grid is at a peak, and the energy allocation module outputs a second allocation instruction through the mobile terminal when the public grid is at a trough. The second allocation instruction is used to prompt the connection of the vehicle battery and the first conversion circuit.

[0064] Specifically, the peak of the grid state parameter of the public power grid refers to the peak power consumption period, and the trough refers to the period of low power consumption. The public power grid outputs in the specific time periods corresponding to the peak and trough, by setting the peak power consumption threshold and the trough power consumption threshold, when the power consumption of the public power grid is higher than the peak power consumption threshold, it is a peak, and when the power consumption of the public power grid is lower than the trough power consumption threshold, it is a trough. When the peak occurs, it is judged that the power supply capacity of the public power grid is insufficient, and the first allocation instruction is used to prompt the connection of the on-board battery to realize the transmission of electric energy from the on-board battery to the public power grid. Alternatively, the first allocation instruction is used to prompt the connection of the energy storage battery and the second conversion circuit to realize the transmission of electric energy from the energy storage battery to the public power grid. When the trough occurs, the second allocation instruction is used to prompt the connection of the on-board battery and the first conversion circuit, so that the on-board battery is charged through the public power grid at the trough. Alternatively, the second allocation instruction is used to prompt the connection of the energy storage battery and the first conversion circuit, so that the energy storage battery is charged through the public power grid at the trough.

[0065] In some embodiments, when the remaining power of the vehicle battery is fully charged (or when the remaining power of the energy storage battery is any preset threshold), the energy allocation module controls the second conversion circuit to be turned on in response to a peak or power outage state of the public power grid.

[0066] Specifically, when the energy allocation module receives a peak or power outage from the public power grid, it obtains the on-board battery parameters of the on-board battery. When the remaining power of the on-board battery is 100% (or when the remaining power of the energy storage battery is any preset threshold), the energy allocation module controls the second conversion circuit to be turned on, and the fourth interface circuit to be turned on, so as to give priority to the on-board battery to supply power to household appliances in the AC power network.

[0067] In some embodiments, the vehicle further includes a generator, and the generator is configured to be connected to an input terminal of the second conversion circuit.

[0068] Specifically, the vehicle is a hybrid vehicle, and the generator of the vehicle is used to provide conversion of mechanical energy into electrical energy. The generator is connected to the input end of the second conversion circuit, the output end of the second conversion circuit is connected to the input end of the fourth interface circuit, and the output end of the fourth interface circuit is connected to the input end of multiple isolation switch circuits. The energy allocation module controls the second conversion circuit and the fourth interface circuit to be turned on, so as to supply power to household appliances in the AC network through the generator of the vehicle.

[0069] In some embodiments, the vehicle receives grid status parameters through an energy allocation module, and outputs a prompt message for connecting to the first conversion circuit when the public grid is at a trough.

[0070] Specifically, the controller of the vehicle receives the grid state parameter by connecting to the energy allocation module, and reminds the driver to connect the vehicle battery and the first conversion circuit by prompting the first conversion circuit prompt information.

[0071] In some embodiments, the energy allocation module receives the power demand of the AC power network and the power demand curve of time and weather, and adjusts the AC power network and the bidirectional conversion module according to the power demand curve.

[0072] Specifically, the energy allocation module realizes the transmission of electricity between green energy, vehicle batteries, energy storage batteries, public power grids and household appliances by analyzing the change curve of electricity consumption over time (season) and weather (temperature) and by adjusting the on-off of each circuit of the AC network and the bidirectional conversion module.

[0073] The embodiments of the present disclosure have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or technical improvements in the market, or to enable other persons of ordinary skill in the art to understand the present invention.

Claims

1. An energy allocation system based on a vehicle battery, characterized in that: include: A vehicle, the vehicle comprising an on-board battery; A bidirectional conversion module, the bidirectional conversion module is electrically connected to the vehicle battery; an alternating current network, the alternating current network being electrically connected to the bidirectional conversion module; A main isolating switch module, the main isolating switch module is electrically connected to the AC power network; A public power grid, the public power grid being electrically connected to the main isolating switch module; An energy allocation module, wherein the energy allocation module is communicatively connected with the vehicle, the bidirectional conversion module, the AC power network, the main isolating switch module and the public power grid respectively, the energy allocation module collects circuit signals through the bidirectional conversion module, and controls the on-off of the main isolating switch module and the public power grid based on the circuit signals, the energy allocation module receives power grid state parameters of the public power grid, and controls the on-off of the public power grid and the main isolating switch module, controls the on-off of the main isolating switch module and the AC power network, controls the on-off of the vehicle battery and the bidirectional conversion module, and controls the on-off of the AC power network and the bidirectional conversion module based on the power grid state parameters.

2. The system according to claim 1, characterized in that The main isolating switch module includes an AC bidirectional interface circuit, a grounding protection circuit and a leakage protection circuit. The circuit signal includes a current signal, a voltage signal, and a temperature signal of the AC bidirectional interface circuit, a grounding protection sampling signal of the grounding protection circuit, and a leakage sampling signal of the leakage protection circuit. The energy allocation module controls the on and off of the AC bidirectional interface circuit based on the circuit signal.

3. The system according to claim 2, characterized in that The AC network includes a first interface circuit, a second interface circuit, a third interface circuit and a fourth interface circuit, wherein the input end of the first interface circuit is used to connect to the main isolating switch module, the output end of the first interface circuit is used to connect to the bidirectional conversion module, the input end of the second interface circuit is used to connect to the bidirectional conversion module, the output end of the second interface circuit is used to connect to the main isolating switch module, the AC network includes a multi-channel AC isolating switch circuit, the output end of the multi-channel AC isolating switch circuit is connected to an AC electrical appliance, the input end of the third interface circuit is used to connect to the main isolating switch module, the output end of the third interface circuit is used to connect to the input end of the multi-channel AC isolating switch circuit, the input end of the fourth interface circuit is used to connect to the bidirectional conversion module, and the output end of the fourth interface circuit is used to connect to the input end of the multi-channel AC isolating switch circuit.

4. The system according to claim 3, characterized in that The bidirectional conversion module includes a first conversion circuit and a second conversion circuit. The input end of the first conversion circuit is used to connect to the AC power network, and the output end of the first conversion circuit is used to connect to the vehicle battery. The input end of the second conversion circuit is used to connect to the vehicle battery, and the output end of the second conversion circuit is used to connect to the AC power network.

5. The system according to claim 4, characterized in that It also includes an energy storage battery, and the bidirectional conversion module also includes a third conversion circuit, the input end of the third conversion circuit is connected to the energy storage battery, the output end of the third conversion circuit is connected to the AC power network, and the energy storage battery is electrically connected to the output end of the first conversion circuit.

6. The system according to claim 5, characterized in that The energy storage battery includes a battery management system, and the energy allocation module is communicated with the management system of the energy storage battery to obtain parameters of the energy storage battery, and the energy storage battery parameters include the remaining power of the energy storage battery, the output power of the energy storage battery, the maximum chargeable power of the energy storage battery, the maximum chargeable current of the energy storage battery, and the maximum chargeable voltage of the energy storage battery.

7. The system according to claim 6, characterized in that It also includes a green energy module, and the bidirectional conversion module also includes a fourth conversion circuit, the input end of the fourth conversion circuit is used to connect the green energy module, and the output end of the fourth conversion circuit is used to connect the energy storage battery and the vehicle battery.

8. The system according to claim 7, characterized in that The energy allocation module controls the on and off of the fourth conversion circuit according to the energy storage battery parameters.

9. The system according to claim 8, characterized in that The energy allocation module obtains the on-board battery parameters of the on-board battery through the vehicle, and controls the on-off of the fourth conversion circuit according to the on-board battery parameters, wherein the battery parameters include the remaining power of the on-board battery, the output power of the on-board battery, the maximum chargeable power of the on-board battery, the maximum chargeable current of the on-board battery, and the maximum chargeable voltage of the on-board battery.

10. The system according to claim 9, characterized in that The energy allocation module includes a metering unit, which is used to determine and collect the power consumption output by the public power grid to the AC power network and the power supply output by the green energy to the public power grid, and the metering unit determines the electricity bill based on the power consumption and the power supply.

11. The system according to claim 10, characterized in that It also includes a mobile terminal, which is communicatively connected with the energy allocation module. The energy allocation module outputs an alarm signal in response to the disconnection of the AC bidirectional interface circuit, and the mobile terminal receives the alarm signal.

12. The system according to claim 11, characterized in that The grid status parameters include a public grid voltage. When the public grid voltage is lower than a preset voltage threshold, the energy allocation module outputs a first allocation instruction through the mobile terminal, and the allocation instruction is used to prompt the connection between the vehicle battery and the second conversion circuit.

13. The system according to claim 12, characterized in that The grid status parameters also include peaks and troughs. The energy allocation module outputs the first allocation instruction through the mobile terminal when the public grid is at a peak. The energy allocation module outputs the second allocation instruction through the mobile terminal when the public grid is at a trough. The second allocation instruction is used to prompt the connection between the vehicle battery and the first conversion circuit.

14. The system according to claim 13, characterized in that When the remaining power of the on-board battery is fully charged, the energy allocation module controls the second conversion circuit to be turned on in response to a peak or power outage state of the public power grid.

15. The system according to claim 14, characterized in that The vehicle receives the grid state parameter through the energy allocation module, and outputs prompt information for connecting to the first conversion circuit when the public grid is in a trough.

16. The system according to claim 15, characterized in that The energy allocation module receives the power demand of the AC power network and the power demand curve of time and weather, and adjusts the AC power network and the bidirectional conversion module according to the power demand curve.

17. The system according to claim 16, characterized in that The vehicle further includes a generator, which is used to be connected to an input end of the second conversion circuit.

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