Integrated energy storage and charging swapping station and energy storage charging and swapping system

Abstract

This application relates to the field of power control technology, and provides an integrated energy storage charging power exchange station and an energy storage charging power exchange system. The power exchange station includes: a power distribution control unit for accessing the power grid, and an energy storage unit including at least one energy storage battery; the energy storage unit is connected to the power distribution control unit, and the power distribution control unit is used to access at least one power consumption unit; the power distribution control unit is configured to control the power grid to charge the energy storage batteries in the energy storage unit with a power less than a first preset power during a first preset time period, and during a second preset time period, control the energy storage unit with a stored power greater than or equal to a second preset power to supply power to the power consumption unit. The integrated energy storage charging power exchange station and the energy storage charging power exchange system provided by the embodiments of this application can reduce the power operation cost and improve the utilization rate of power resources.

Description

Technical Field

[0001] This application relates to the technical field of power control, and in particular to an integrated energy storage and charging swap station and an energy storage, charging and swapping system. Background Art

[0002] At present, with the rapid development of new energy vehicles, to solve the problem of difficult charging of the power batteries of new energy vehicles, in related technologies, a swap station is used to replace the power batteries, realizing rapid swapping of new energy vehicles, thereby solving the problem of difficult charging of power batteries and being able to extend the service life of power batteries.

[0003] In the existing swap station, the energy storage batteries in the swap station are connected to the power grid, and the power grid charges the energy storage batteries so that when the power batteries need to be replaced, the fully charged energy storage batteries are used to replace the power batteries, and the replaced power batteries are connected to the power grid as energy storage batteries for charging. However, the energy storage batteries of this kind of swap station can only store energy, and the power operation cost is relatively high. Moreover, the swapping frequency of new energy vehicles is not high, so the energy storage batteries may be idle for a long time after being fully charged, resulting in low utilization rate of power resources and waste of power resources. Summary of the Invention

[0004] This application aims to solve at least one of the technical problems existing in the related technologies. For this purpose, this application provides an integrated energy storage and charging swap station, which can reduce the power operation cost and improve the utilization rate of power resources.

[0005] This application also provides an energy storage, charging and swapping system.

[0006] According to an embodiment of the first aspect of this application, the integrated energy storage and charging swap station includes:

[0007] A power distribution control unit for connecting to the power grid, and an energy storage unit including at least one energy storage battery;

[0008] The energy storage unit is connected to the power distribution control unit, and the power distribution control unit is used to connect to at least one power consumption unit;

[0009] The power distribution control unit is configured to control the power grid to charge the energy storage batteries in the energy storage unit with a power less than a first preset power during a first preset time period, and control the energy storage unit with a stored power greater than or equal to a second preset power to supply power to the power consumption unit during a second preset time period.

[0010] The integrated energy storage and charging swapping station provided by the embodiment of the present application controls the power grid to charge the energy storage batteries in the energy storage unit with the power less than the first preset power during the first preset time period, and controls the energy storage unit with the stored power greater than the second preset power to supply power to the power-consuming unit during the second preset time period, so that the swapping station forms an intelligent microgrid, which can charge the energy storage batteries that need to be charged during the first preset time period to meet the swapping demand. At the same time, during the second preset time period, the energy storage batteries that meet the charging demand are used for discharging, avoiding the waste of resources caused by the idle energy storage batteries with sufficient stored electric energy, thereby being able to reduce the power operation cost, improve the utilization rate of power resources, and realize the collaborative interaction of multiple resources of the power source, grid, load and energy storage.

[0011] According to an embodiment of the present application, the power distribution control unit is specifically used for:

[0012] During the second preset time period, determine that the stored power of the energy storage unit is greater than or equal to the second preset power, and determine the minimum number of energy storage batteries required to meet the second preset power according to the stored power of each energy storage battery in the energy storage unit;

[0013] According to the minimum number, obtain at least one target energy storage battery corresponding thereto from the energy storage unit, and control each target energy storage battery to supply power to the power-consuming unit;

[0014] Wherein, the total stored power of each target energy storage battery meets the second preset power.

[0015] According to an embodiment of the present application, the power distribution control unit is further used for:

[0016] Determine that the stored power of the energy storage unit is less than the second preset power during the second preset time period, and control the power grid to supply power to the power-consuming unit during the second preset time period.

[0017] According to an embodiment of the present application, the second preset power is determined according to the required power of the electrical appliances connected to the power-consuming unit.

[0018] According to an embodiment of the present application, it further includes:

[0019] A bidirectional current conversion unit, connected to the energy storage battery, for converting the current output when the power grid supplies power to the energy storage battery into direct current required by the energy storage battery; and converting the current output when the energy storage battery supplies power to the power-consuming unit into alternating current and outputting it to the power distribution control unit;

[0020] The voltage conversion unit connected to the power distribution control unit, and the voltage conversion unit is used for converting the alternating current received from the power distribution control unit into direct current required by the power-consuming unit.

[0021] According to one embodiment of the present application, the energy storage unit further includes a battery pack protocol conversion circuit, and the battery pack protocol conversion circuit is used to perform protocol switching, and the protocol includes a charging protocol and a discharging protocol;

[0022] The battery pack protocol conversion circuit is connected to the power distribution control unit, and each of the energy storage batteries is connected in parallel to the battery pack protocol conversion circuit.

[0023] According to one embodiment of the present application, it also includes:

[0024] A bidirectional meter for accessing a power grid, the bidirectional meter being connected to the power distribution control unit and being used to obtain a first output power outputted from the power grid to the power distribution control unit and a second output power outputted from the energy storage unit to the power grid;

[0025] The power distribution control unit is further configured to adjust at least one of the first output power and the second output power according to measurement results of the first output power and the second output power.

[0026] According to an embodiment of the present application, the first preset time period is a low-consumption period or a high-consumption period of the power grid;

[0027] The second preset time period is a peak power consumption period of the power grid.

[0028] According to the second aspect of the present application, the energy storage charging and battery replacement system includes:

[0029] An electricity-consuming unit, and an integrated energy storage and charging battery swap station as described in any of the above embodiments.

[0030] According to an embodiment of the present application, the power consumption unit includes a charging subunit for charging the power consumption device.

[0031] The above one or more technical solutions in the embodiments of the present application have at least one of the following technical effects:

[0032] By controlling the power distribution control unit to control the power grid to charge the energy storage batteries with less than the first preset power in the energy storage unit in the first preset time period, and to control the energy storage units with more than the second preset power in the second preset time period to supply power to the power consumption units, the battery swap station forms an intelligent microgrid, which can charge the energy storage batteries that need to be charged in the first preset time period to meet the battery swap needs, and at the same time, use the energy storage batteries that meet the charging needs for discharge in the second preset time period, avoiding the idleness of energy storage batteries with sufficient electricity and causing waste of resources, thereby reducing the power operation cost, improving the utilization rate of power resources, and realizing the coordinated interaction of multiple resources of source, grid, load and storage.

[0033] Further, by determining the minimum number of energy storage batteries required to meet the second preset power according to the stored power of each energy storage battery in the energy storage unit, and obtaining the corresponding number of target energy storage batteries that meet the second preset power from the energy storage unit based on this minimum number to supply power to the power consumption unit, it is possible to control the minimum number of energy storage batteries that meet the charging demand to discharge during the second preset period, control the number of energy storage batteries for discharging, and thereby reduce the consumption of energy storage batteries.

[0034] Further, when it is detected that the stored power in the second preset time period is less than the second preset power, or when it is detected that the energy storage unit is abnormal, the power grid is controlled to supply power to the power distribution control unit, so that the power distribution control unit distributes the electric energy of the power grid to the power consumption unit to ensure that the power consumption unit can use electricity normally.

[0035] Further, the second preset power is not less than the required power of the electrical appliances connected to the power consumption unit to ensure that the power supply can meet the power consumption demand of the power consumption unit when using the energy storage unit to supply power to the power consumption unit.

[0036] Further, by setting a bidirectional current conversion unit, it is possible to convert the alternating current output by the power grid into direct current to supply the energy storage battery, and convert the direct current output by the energy storage battery into alternating current and feedback it to the power distribution control unit for distribution. Therefore, compared with the scheme of using two unidirectional converters, the cost is lower, the construction difficulty is smaller, the maintenance is more convenient, and the use is also simpler.

[0037] Further, since the first preset period is the low-power consumption period or the flat-power consumption period of the power grid, and the second preset period is the high-power consumption period of the power grid, it is possible to buffer the severe dependence of the construction of high-power fast charging stations on electricity, achieve peak shifting and valley filling, and reduce the load and fluctuation of the power grid during the high-power consumption period. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0039] Figure 1 is a schematic structural diagram of an integrated energy storage and charging swapping station provided by an embodiment of the present application;

[0040] Figure 2 is a schematic structural diagram of an integrated energy storage and charging swapping station provided by another embodiment of the present application;

[0041] Figure 3 is a schematic structural diagram of a control unit provided by an embodiment of the present application;

[0042] Figure 4 It is a schematic structural diagram of the energy storage charging and swapping system provided by the embodiments of the present application. Specific embodiments

[0043] To make the objectives, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without making creative efforts shall fall within the protection scope of the present application.

[0044] Hereinafter, the energy storage charging integrated swapping station and the energy storage charging and swapping system provided by the embodiments of the present application will be introduced and described in detail through several specific embodiments.

[0045] In one embodiment, an energy storage charging integrated swapping station is provided. As Figure 1 shown, an energy storage charging integrated swapping station provided in this embodiment includes:

[0046] A power distribution control unit 1 for accessing the power grid, and an energy storage unit 2 including at least one energy storage battery 11;

[0047] The energy storage unit 2 is connected to the power distribution control unit 1, and the power distribution control unit is used to access at least one power consumption unit 3;

[0048] The power distribution control unit 1 is configured to control the power grid 100 to charge the energy storage battery 11 with an electric quantity less than a first preset electric quantity in the energy storage unit 2 during a first preset time period, and control the energy storage unit 2 with a stored electric quantity greater than or equal to a second preset electric quantity to supply power to the power consumption unit 3 during a second preset time period.

[0049] In one embodiment, the power distribution control unit 1 can be used to access the European transformer of the public power grid through a 0.4V AC bus, so as to obtain electric energy from the power grid. The energy storage unit 2 can be connected to the power distribution control unit 1 through a 0.4V AC bus to realize the interaction with the power distribution control unit 1. Among them, the number of energy storage batteries 11 that the energy storage unit 2 can accommodate can be set according to the actual situation. Exemplarily, 8 energy storage batteries with a capacity of 40kW can be set in the energy storage unit 2, and the space for 8 energy storage batteries with a capacity of 60kW is reserved spatially. That is, 16 energy storage batteries can be provided when the energy storage unit 2 is fully loaded.

[0050] The output terminal of the power distribution control unit 1 is used to connect to at least one electrical consumption unit, which can be an electrical appliance for consuming electrical energy, such as the HVAC of the battery swapping station, the lighting equipment of the battery swapping station, etc., or it can be a charging device for charging the electrical appliance, such as a charging pile gun for charging the power battery of a new energy vehicle.

[0051] The power distribution control unit 1 is used to control the energy storage unit 2 to charge or discharge and to distribute power. Specifically, the power distribution control unit 1 may include a control subunit 21 for controlling the energy storage unit 2 to charge or discharge, and a power distribution subunit 22 for distributing power. During a set first preset time period, the control subunit 21 controls the power distribution subunit 22 to distribute the electric energy received from the power grid to the energy storage battery 11 whose power is less than the first preset power, and charge the energy storage battery 11 until the stored power of the energy storage battery 11 reaches 100%, then stop charging the energy storage battery 11. During a set second preset time period, the control subunit 21 detects the stored power of the energy storage unit 2. If the stored power of the energy storage unit 2 reaches the second preset power, the control subunit 21 controls the energy storage unit 2 to discharge to the power distribution subunit 22, and the power distribution subunit 22 distributes the electric energy received from the energy storage unit 2 to at least one electrical consumption unit 3 that needs electricity to supply power to the electrical consumption unit 3.

[0052] In one embodiment, the first preset time period may be a time period with less power grid fluctuations, and the second preset time period may be a time period with greater power grid fluctuations. Exemplarily, after determining the power grid fluctuation rule through the historical power consumption data of the power grid, the low power consumption period or flat power consumption period of the power grid can be determined as the first preset time period. The high power consumption period of the power grid is determined as the first preset time period. Among them, the low power consumption period or flat power consumption period is a time period when the power supply of the power grid is not greater than the preset power, or the power grid electricity price is not greater than the preset electricity price; the high power consumption period is a time period when the power supply of the power grid is greater than the preset power, or the power grid electricity price is greater than the preset electricity price. Specifically, the low power consumption period, flat power consumption period, and high power consumption period can be determined according to the latest peak-valley electricity price standard implemented by the power grid company. Exemplarily, in Guangdong region, the high power consumption period, flat power consumption period, and low power consumption period are respectively: high power consumption period: 10:00 - 12:00, 14:00 - 19:00; flat power consumption period: 8:00 - 10:00, 12:00 - 14:00, 19:00 - 24:00; low power consumption period: 00:00 - 8:00.

[0053] In one embodiment, the first preset power and the second preset power can be set according to the actual situation. Exemplarily, the first preset power can be fifty percent of the total electric energy capacity of the energy storage battery 11, etc., and the second preset power can be fifty percent of the total stored power of each energy storage battery 11 in the energy storage unit 2, etc.

[0054] It can be understood that when the power distribution control unit 1 controls the energy storage unit 2 to supply power to the power consumption unit 3 during the second preset time period, the power grid will stop supplying power to the energy storage unit 2 and the power consumption unit 3.

[0055] By controlling the power grid to charge the energy storage batteries with the electricity quantity less than the first preset electricity quantity in the energy storage unit during the first preset time period, and controlling the energy storage unit with the stored electricity greater than the second preset electricity quantity to supply power to the power consumption unit during the second preset time period, the swap station forms an intelligent microgrid, which can charge the energy storage batteries that need to be charged during the first preset time period to meet the battery swapping demand. At the same time, during the second preset time period, the energy storage batteries that meet the charging demand are used for discharging, avoiding the waste of resources caused by the idleness of the energy storage batteries with sufficient stored electricity, thereby reducing the power operation cost, improving the utilization rate of power resources, and realizing the collaborative interaction of multiple resources of the power grid, load, and energy storage.

[0056] At the same time, since the first preset time period is the low-power consumption period or the flat-power consumption period of the power grid, and the second preset time period is the high-power consumption period of the power grid, it is possible to buffer the severe dependence of the construction of high-power fast charging stations on power, realize peak shifting and valley filling, and reduce the load and fluctuation of the power grid during the high-power consumption period.

[0057] During the process of controlling the energy storage unit 2 to supply power to the power consumption unit 3, in order to reduce the consumption of the energy storage battery 11, in one embodiment, the power distribution control unit 1 is specifically configured to:

[0058] During the second preset time period, determine that the stored electricity of the energy storage unit 2 is greater than or equal to the second preset electricity quantity, and determine the minimum number of energy storage batteries 11 required to meet the second preset electricity quantity according to the stored electricity of each energy storage battery 11 in the energy storage unit 2;

[0059] According to the minimum number, obtain at least one corresponding target energy storage battery from the energy storage unit 2, and control each target energy storage battery to supply power to the power consumption unit 3;

[0060] Wherein, the total stored electricity of each target energy storage battery meets the second preset electricity quantity.

[0061] In one embodiment, during a second preset period, the control subunit 21 can detect the stored power of the energy storage unit 2. If the stored power of the energy storage unit is greater than or equal to a second preset power, it indicates that the energy storage unit 2 can meet the power supply demand. At this time, the control subunit 21 can detect the stored power of each energy storage battery 11 in the energy storage unit 2, so as to determine the minimum number of energy storage batteries 11 required when meeting the power supply demand based on the stored power of each energy storage battery 11. For example, if the energy storage unit 2 includes three energy storage batteries 11, and the stored powers of the three energy storage batteries 11 are 10kW, 20kW, and 30kW respectively, and the second preset power is 20kW, at this time, a single energy storage battery with a stored power of 20kW or 30kW can meet the 20kW demand. Therefore, it can be determined that the minimum number of energy storage batteries 11 required when meeting the power supply demand is 1. If the stored powers of the three energy storage batteries 11 are 10kW, 20kW, and 30kW respectively, and the second preset power is 40kW, then at least one energy storage battery with a stored power of 10kW and one energy storage battery with a stored power of 30kW are required to meet the 40kW demand. Therefore, it can be determined that the minimum number of energy storage batteries 11 required when meeting the power supply demand is 2.

[0062] In one embodiment, after the control subunit 21 determines the minimum number of energy storage batteries 11 required when meeting the power supply demand, it can select the corresponding number of energy storage batteries 11 that meet the power supply demand from the energy storage unit 2 as target energy storage batteries, and control each target energy storage battery to discharge to the power distribution subunit 22, so that the power distribution subunit 22 distributes the electric energy received from each target energy storage battery to at least one power consumption unit 3 that needs electricity.

[0063] By determining the minimum number of energy storage batteries required when meeting the second preset power according to the stored power of each energy storage battery in the energy storage unit, and obtaining the corresponding number of target energy storage batteries that meet the second preset power from the energy storage unit based on this minimum number to supply power to the power consumption unit, it is possible to control the minimum number of energy storage batteries that meet the charging demand to discharge during the second preset period, control the number of energy storage batteries for discharging, and thus reduce the consumption of energy storage batteries.

[0064] In one embodiment, the power distribution control unit 1 is further configured to, when it detects that the stored power of the energy storage unit 2 is less than the second preset power during the second preset time period, it can determine that the power of the energy storage unit 2 cannot meet the charging demand, or when it detects that the energy storage unit 2 is abnormal, control the power grid to supply power to the power consumption unit during the second preset time period. Specifically, when the control subunit 21 detects that the stored power during the second preset time period is less than the second preset power, or detects that the energy storage unit 2 is abnormal, it controls the power grid to supply power to the power distribution subunit 22, so that the power distribution subunit 22 distributes the electric energy of the power grid to the power consumption unit to ensure that the power consumption unit can normally use electricity.

[0065] To meet the power consumption requirements of the power consumption unit, in one embodiment, the second preset power quantity can be determined according to the required power quantity of the electrical appliances connected to the power consumption unit. Specifically, the second preset power quantity is not less than the required power quantity of the electrical appliances connected to the power consumption unit, so as to ensure that when the energy storage unit supplies power to the power consumption unit, the power supply quantity can meet the power consumption requirements of the power consumption unit.

[0066] In one embodiment, as Figure 2 shown, the power distribution sub-unit 21 in the power distribution control unit 1 can be an AC power distribution cabinet, which is connected to the power grid through a 0.4KV AC bus, and is connected to the battery power distribution cabinet 200 of the energy storage unit 2 through the 0.4KV AC bus. The battery power distribution cabinet 200 of the energy storage unit 2 is connected in parallel with each energy storage battery 11 in the energy storage unit 2. Since the energy storage battery 11 stores direct current, while the power distribution sub-unit 21 distributes alternating current, an AC / DC converter can be provided between the energy storage battery 11 and the power distribution sub-unit 21. When the energy storage battery 11 supplies power to the power consumption unit 3, it is necessary to first convert the direct current into alternating current and feedback it to the power distribution sub-unit 21, and then the power distribution sub-unit 21 distributes the electric energy to the power consumption unit. Therefore, a DC / AC inverter also needs to be provided between the energy storage battery 11 and the power distribution sub-unit 21. Considering that this method requires two current conversion devices to perform direct current conversion and alternating current conversion respectively, this greatly increases the use cost, increases the wiring difficulty, and also becomes complicated in future use or maintenance. To remotely monitor the conversion situation, an additional communication line and an additional converter need to be managed. These all increase the use difficulty and push up the use cost, which is not conducive to a large number of popular applications. For this reason, in one embodiment, as Figure 2 shown, it further includes a bidirectional current conversion unit 31, which is connected to the energy storage battery 11 and is used to connect between the energy storage battery 11 and the power distribution sub-unit 21, and is used to convert the current output when the power grid 100 supplies power to the energy storage battery 11 into the direct current required by the energy storage battery 11; and, convert the current output when the energy storage battery 11 supplies power to the power consumption unit 3 into alternating current and output it to the power distribution sub-unit 21 in the power distribution control unit. Among them, the bidirectional current conversion unit 31 can be an AC / DC bidirectional converter. Each energy storage battery is correspondingly connected with a bidirectional current conversion unit 31, so as to convert the alternating current output by the power grid into direct current to supply the energy storage battery, and convert the direct current output by the energy storage battery into alternating current and feedback it to the power distribution sub-unit 21 for distribution. Therefore, compared with the scheme of using two unidirectional converters, the cost is lower, the construction difficulty is smaller, the maintenance is more convenient, and the use is also simpler.

[0067] In one embodiment, when the energy storage unit 2 supplies power to the power consumption unit 3, the direct current is first converted into alternating current, and then the power distribution sub-unit 21 of the power distribution control unit 1 distributes the electric energy. Therefore, a voltage conversion unit 32 is also connected to the power distribution sub-unit 21 of the power distribution control unit 1, which is used to convert the alternating current received from the power distribution sub-unit 21 of the power distribution control unit 1 into the direct current required by the power consumption unit 3 to supply power to the power consumption unit.

[0068] In one embodiment, as Figure 3 shown, the control sub-unit 21 can be a GWC100 controller, which is used to communicate with the power consumption unit 3, and communicate with the battery pack protocol conversion circuit 33 and the bidirectional power conversion unit 31 of the energy storage unit 2. Among them, the battery pack protocol conversion circuit 33 is used to perform protocol switching, and the protocols include a charging protocol and a discharging protocol. Each of the energy storage batteries 11 is connected in parallel to the battery pack protocol conversion circuit 33. The battery pack protocol conversion unit 33 can also be communicatively connected to the bidirectional power conversion unit 31, such as through a CAN bus, so that the energy storage battery 11 can communicate with the bidirectional power conversion unit 31 through the battery pack protocol conversion unit 33 to realize charge and discharge control.

[0069] Exemplarily, the control sub-unit 21 can be communicatively connected to the power consumption unit 3 and the bidirectional power conversion unit 31 through an RS485 communication cable, and connected to the battery pack protocol conversion unit 33 through a CAN bus.

[0070] In one embodiment, the control sub-unit 21 can also be linked to a display 300 and a server 400, which is used to display the detected power data through the display, and send it to the server 400 for the server to monitor.

[0071] In one embodiment, to prevent the energy storage battery 11 from sending the converted alternating current to the power grid during the process of outputting electric energy to the power distribution sub-unit 22, resulting in reverse power generation, causing harmonic pollution to the power grid and voltage fluctuations in the power grid. In one embodiment, as Figure 2 and Figure 3 shown, it further includes a bidirectional metering electric meter 34 connected to the power grid. The bidirectional metering electric meter 34 is connected to the power distribution sub-unit 21 and the control sub-unit 22 of the power distribution control unit 1, and is used to obtain the first output power output from the power grid 100 to the power distribution control unit 1, and the second output power output from the energy storage unit 2 to the power grid 100.

[0072] The power distribution control unit 1 is also used to adjust at least one of the first output power and the second output power according to the metering results of the first output power and the second output power.

[0073] In one embodiment, to prevent the energy storage unit 2 from generating electricity in reverse, the integrated energy storage and charging swapping station performs reverse current detection through a bidirectional metering electric meter 34, measures the electricity consumed from the power grid, i.e., the first output power, and the electricity fed into the power grid, i.e., the second output power. The bidirectional metering electric meter 34 then sends the measured first output power and second output power to the control sub-unit 22 of the power distribution control unit 1, so that the control sub-unit 22 adjusts the first output power and / or the second output power according to the first output power and the second output power to avoid reverse power and have no impact on the power grid.

[0074] In one embodiment, as Figure 4 shown, there is also provided an energy storage charging and swapping system, including:

[0075] a power consumption unit 3, and the integrated energy storage and charging swapping station as described in any of the above embodiments.

[0076] Among them, the power consumption unit 3 includes a charging sub-unit for charging electrical appliances. For example, a charging pile gun for charging the power battery of a new energy vehicle.

[0077] Through the description of the above embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on such an understanding, the essence of the above technical solutions, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disc, etc., and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0078] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of each embodiment of the present application.

Claims

1. An integrated energy storage and charging power exchange station, characterized in that, Comprising: A distribution control unit for accessing the power grid, and an energy storage unit including at least one energy storage battery; The energy storage unit is connected to the distribution control unit, and the distribution control unit is used to access at least one electrical appliance unit; The distribution control unit is configured to control the power grid to charge the energy storage battery with a power less than a first preset power in the energy storage unit during a first preset time period, and control the energy storage unit with a stored power greater than or equal to a second preset power to supply power to the electrical appliance unit during a second preset time period; Specifically, the distribution control unit is configured to: Determine that the stored power of the energy storage unit in the second preset time period is greater than or equal to the second preset power, and determine the minimum number of energy storage batteries required to meet the second preset power according to the stored power of each energy storage battery in the energy storage unit; According to the minimum number, obtain at least one corresponding target energy storage battery from the energy storage unit, and control each target energy storage battery to supply power to the electrical appliance unit; Wherein, the total stored power of each target energy storage battery meets the second preset power; The distribution control unit includes a sub-distribution unit for alternating current distribution; The energy storage charging integrated substation further includes a bidirectional converter unit, connected to the energy storage battery, for converting the current output when the power grid supplies power to the energy storage battery into direct current required by the energy storage battery; And converting the current output when the energy storage battery supplies power to the electrical appliance unit into alternating current and outputting it to the sub-distribution unit; A voltage conversion unit connected to the sub-distribution unit, and the voltage conversion unit is used to convert the alternating current received from the sub-distribution unit into direct current required by the electrical appliance unit.

2. The integrated energy storage and charging swapping station according to claim 1, wherein The distribution control unit is further configured to: Determine that the stored power of the energy storage unit in the second preset time period is less than the second preset power, and control the power grid to supply power to the electrical appliance unit during the second preset time period.

3. The integrated energy storage and charging swapping station according to any one of claims 1-2, characterized in that The second preset power is determined according to the required power of the electrical appliance connected to the electrical appliance unit.

4. The integrated energy storage and charging swapping station according to claim 1, wherein The energy storage unit further includes a battery pack protocol conversion circuit, and the battery pack protocol conversion circuit is used for protocol switching, and the protocols include a charging protocol and a discharging protocol; The battery pack protocol conversion circuit is connected to the distribution control unit, and each energy storage battery is connected in parallel to the battery pack protocol conversion circuit.

5. The integrated energy storage and charging swapping station according to claim 1, wherein Further comprising: A bidirectional metering electric meter for accessing the power grid, the bidirectional metering electric meter is connected to the distribution control unit, and is used to obtain a first output power output by the power grid to the distribution control unit and a second output power output by the energy storage unit to the power grid; The distribution control unit is further configured to adjust at least one of the first output power and the second output power according to the measurement results of the first output power and the second output power.

6. The integrated energy storage and charging swapping station according to claim 1, wherein The first preset time period is a low electricity consumption period or a flat electricity consumption period of the power grid; The second preset time period is a peak electricity consumption period of the power grid.

7. A energy storage charging and swapping system, characterized in that, Comprising: An electrical appliance unit, and an energy storage charging integrated substation according to any one of claims 1-6.

8. The energy storage charging and swapping system according to claim 7, wherein The power consumption unit includes a charging sub-unit for charging an electrical appliance component.

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