Automatic remote control energy-saving electric energy storage system and method

Abstract

The invention relates to the technical field of energy storage, and discloses an automatic remote-control energy-saving electric energy storage system, and the system comprises a power supply monitoring device which is used for monitoring a current power supply time period, and delimiting a charging time period and a discharging time period; the energy storage monitoring equipment is used for newly generating a priority discharge queue according to the received monitoring result to carry out charge and discharge priority ranking; and the energy storage control equipment is used for controlling different types of energy storage equipment to simultaneously perform charging and discharging operation according to a monitoring result. In addition, the invention further discloses a method for automatically and remotely controlling energy-saving electric energy storage. In the electric energy storage application process, factors such as the charging limit value and the temperature of the energy storage equipment are fully considered, so that the energy storage equipment can set a priority charging and discharging queue according to the charging limit threshold value, the discharging limit threshold value and the temperature threshold value in the charging and discharging process, and the energy storage equipment is always in the optimal efficiency state in the charging and discharging process; therefore, the charging and discharging efficiency of the energy storage equipment is improved, and the service life of the energy storage equipment is prolonged.

Description

Technical Field

[0001] The present invention relates to the field of energy storage technology, and in particular to an automated remote-controlled energy-saving electric energy storage system and method. Background Art

[0002] The electric energy storage system is a power generation system with energy storage devices. The power generation system cannot output electric energy continuously and stably due to changes in various conditions. Therefore, configuring a certain capacity of energy storage device in the system will play a role in smoothing power fluctuations, maintaining dynamic balance between power generation and load, and maintaining voltage and frequency stability, thereby achieving safe, economical, efficient and high-quality operation of the power generation system. It has the advantages of balancing the load of the power grid, reducing energy waste, and improving energy efficiency, which meets the goals of environmental protection and energy saving.

[0003] The patent with announcement number CN115411755A discloses a method and system for managing a combination of electric energy storage. By combining different types of energy storage devices in a power plant and leveraging their respective advantages, it achieves large fluctuations in electricity demand during different power supply periods, ensures the charging of the energy storage power plant during off-peak periods, and guarantees the power supply and continuous and stable operation of the energy storage power plant.

[0004] However, as an energy storage device, there are many factors that affect its charging and discharging efficiency, including charging limit, temperature, etc. For example, overcharging will cause the internal pressure of the energy storage device to increase, generate heat, and accelerate the aging of the energy storage, while excessive discharge will also cause the activity of the energy storage device to decrease, and will also damage the service life of the energy storage device.

[0005] In view of this, how to improve the charging and discharging efficiency of energy storage devices and increase the service life of energy storage devices in electric energy storage systems has become a technical problem that technical personnel in this field urgently need to solve. Summary of the invention

[0006] The present invention aims to provide an automated remote-controlled energy-saving electric energy storage system and method to overcome the above-mentioned shortcomings.

[0007] In order to achieve the above-mentioned object, the first aspect of the present invention provides an automated remote-controlled energy-saving electric energy storage system, comprising:

[0008] Power supply monitoring equipment, used to monitor the current power supply time period, define the charging and discharging time periods, and send the monitoring results to the energy storage monitoring equipment and energy storage control equipment;

[0009] The energy storage monitoring device is used to monitor the energy storage device according to the received monitoring results, obtain the charging limit and temperature of the energy storage device, and set the charging limit threshold, the discharging limit threshold and the temperature threshold, determine the energy storage device based on the charging limit threshold, the discharging limit threshold and the temperature threshold, thereby setting the priority charging and discharging queue, and sequence the power value and temperature of the current energy storage device through the energy storage device to regenerate the priority discharging queue for charging and discharging priority sorting;

[0010] The energy storage control device is used to determine the control strategy of each type of energy storage device according to the power generation of the current power generation equipment and the charging and discharging priority order, and control different types of energy storage devices to perform charging and discharging operations simultaneously according to the monitoring results.

[0011] Furthermore, the power supply monitoring device is also used for: if the current power supply period is a peak power supply period, the monitoring result is that the energy storage device needs to discharge; if the current power supply period is a low power supply period, the monitoring result is that the energy storage device needs to be charged; if the current power supply period is a normal period, no monitoring result is sent.

[0012] Furthermore, the energy storage monitoring device is also used for: during charging operation, setting a priority charge and discharge queue with a charging limit threshold and a temperature priority, and sequencing the power value and temperature of the current energy storage device through the energy storage device to regenerate a priority discharge queue for charging and discharging priority sorting; during discharging operation, setting a priority charge and discharge queue with a discharge limit threshold and a temperature priority, and sequencing the power value and temperature of the current energy storage device through the energy storage device to regenerate a priority discharge queue for charging and discharging priority sorting.

[0013] Furthermore, the energy storage monitoring device is also used to: estimate the remaining charging and discharging duration based on the charging and discharging time periods, and determine the matching energy storage device in the priority discharge queue based on the remaining charging and discharging duration and the temperature threshold, and switch it to the current discharge device for charging and discharging operations.

[0014] Furthermore, the energy storage control device is also used for: when currently in a discharging operation, different types of energy storage devices start to output electricity at the same time in accordance with their respective discharge priority order until the power supply demand is met; when currently in a charging operation, different types of energy storage devices start to input electricity at the same time in accordance with their respective charging priority order until all energy storage devices are fully charged or the remaining power generation meets the power supply demand.

[0015] Compared with the prior art, the automated remote control energy-saving electric energy storage system and method of the present invention has the following advantages:

[0016] In the process of electric energy storage application, the present invention fully considers factors such as the charging limit and temperature of the energy storage device, so that the energy storage device can set a priority charging and discharging queue according to the charging limit threshold, the discharging limit threshold and the temperature threshold during the charging and discharging process, so that the energy storage device is always in the best efficiency state during the charging and discharging process, thereby improving the charging and discharging efficiency of the energy storage device and increasing the service life of the energy storage device.

[0017] A second aspect of the present invention provides a method for automated remote control of energy-saving electric energy storage, comprising the following steps:

[0018] Step 1: monitor the current power supply time period and define the charging and discharging time periods;

[0019] Step 2, for monitoring the energy storage device according to the received monitoring results, obtaining the charging limit and temperature of the energy storage device, and setting the charging limit threshold, the discharging limit threshold and the temperature threshold, determining the energy storage device based on the charging limit threshold, the discharging limit threshold and the temperature threshold, thereby setting the priority charging and discharging queue, and sequencing the power value and temperature of the current energy storage device through the energy storage device to regenerate the priority discharging queue for charging and discharging priority sorting;

[0020] Step 3 is used to determine the control strategy of each type of energy storage device according to the power generation of the current power generation equipment and the charging and discharging priority order, and control different types of energy storage devices to perform charging and discharging operations simultaneously according to the monitoring results.

[0021] Furthermore, if the current power supply period is a peak period, the monitoring result is that the energy storage device needs to discharge; if the current power supply period is a valley period, the monitoring result is that the energy storage device needs to be charged; if the current power supply period is a normal period, the monitoring result is not sent.

[0022] Furthermore, during charging operations, a priority charge and discharge queue is set with a charge limit threshold and a temperature priority, and the power value and temperature of the current energy storage device are sequenced through the energy storage device to regenerate a priority discharge queue for charge and discharge priority sorting; during discharging operations, a priority charge and discharge queue is set with a discharge limit threshold and a temperature priority, and the power value and temperature of the current energy storage device are sequenced through the energy storage device to regenerate a priority discharge queue for charge and discharge priority sorting.

[0023] Furthermore, based on the charging and discharging time periods, the remaining duration of charging and discharging is estimated, and based on the remaining duration of charging and discharging and the temperature threshold, a matching energy storage device is determined in the priority discharge queue and switched to the current discharge device for charging and discharging operations.

[0024] Furthermore, when the current operation is discharging, different types of energy storage devices start to output power at the same time according to their respective discharge priority order until the power supply demand is met; when the current operation is charging, different types of energy storage devices start to input power at the same time according to their respective charging priority order until all energy storage devices are fully charged or the remaining power generation meets the power supply demand.

[0025] The advantages of the automated remote control energy-saving electric energy storage method and the automated remote control energy-saving electric energy storage system over the prior art are the same, and will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0027] Figure 1 A schematic diagram of the automated remote control energy-saving electric energy storage system of the present invention;

[0028] Figure 2 This is a schematic diagram of the method for automated remote control of energy-saving electric energy storage according to the present invention. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] Reference Figure 1 In a first aspect, the present invention provides an automated remote-controlled energy-saving electric energy storage system, comprising a power supply monitoring device, an energy storage monitoring device and an energy storage control device.

[0032] Specifically, the power supply monitoring device is used to monitor the current power supply time period, define the charging and discharging time periods, and send the monitoring results to the energy storage monitoring device and the energy storage control device; define the charging and discharging time periods based on the peak and valley conditions of electricity consumption, so that the energy storage device can perform charging / discharging operations during the charging and discharging time periods, and by collecting the current peak and valley conditions of electricity consumption, the peak and valley times of electricity consumption are set as charging and discharging time periods, so that the current energy storage device can perform charging / discharging operations under appropriate circumstances, so as to reasonably control the power consumption in the power system;

[0033] The energy storage monitoring device is used to monitor the energy storage device according to the received monitoring results, obtain the charging limit and temperature of the energy storage device, and set the charging limit threshold, discharging limit threshold and temperature threshold, determine the energy storage device based on the charging limit threshold, discharging limit threshold and temperature threshold, thereby setting the priority charging and discharging queue, and sequence the power value and temperature of the current energy storage device through the energy storage device to regenerate the priority discharge queue for charging and discharging priority sorting.

[0034] Taking batteries as energy storage devices as an example, the power limit refers to the maximum percentage of power that the battery can reach when charging. By setting the charge limit threshold, the battery life can be extended. The battery charge limit threshold is usually 80%-85% of the charge limit, and the charge limit threshold is usually 10%-22% of the charge limit to avoid overcharging and over-discharging of the battery, thereby reducing the aging rate of the battery. Overcharging will increase the pressure inside the battery, generate heat, and accelerate battery aging; while over-discharging will reduce the activity of the chemical substances inside the battery, which will also damage the battery. By setting the charge limit, the battery can be kept within the appropriate power range, reducing the intensity of the chemical reaction, thereby extending the battery life.

[0035] A temperature threshold of the energy storage device is set. The temperature threshold is a threshold for safe charging and discharging of the energy storage device (it can be set according to a commonly set temperature threshold, such as 60°C). An initial discharge device whose temperature is at the charge and discharge temperature threshold during the charge and discharge process is determined, and the initial discharge device is restricted from continuously charging and discharging. Thus, a restricted charge and discharge queue is formed. By setting the charge and discharge temperature threshold, an initial discharge device that reaches the discharge temperature threshold during the charge and discharge process is again determined. By restricting its continuous charge and discharge operations, the potential safety hazards brought by the energy storage device during the discharge process can be reduced again.

[0036] The energy storage control device is used to determine the control strategy of each type of energy storage device according to the power generation of the current power generation equipment and the charging and discharging priority order, and control different types of energy storage devices to perform charging and discharging operations simultaneously according to the monitoring results.

[0037] Among them, the power supply monitoring equipment is also used for: if the current power supply period is a peak power supply period, the monitoring result is that the energy storage device needs to discharge; if the current power supply period is a low power supply period, the monitoring result is that the energy storage device needs to be charged; if the current power supply period is a normal period, the monitoring result is not sent.

[0038] The energy storage monitoring device is also used for: during charging operations, the priority charge and discharge queue is set according to the charge limit threshold and temperature, and the power value and temperature of the current energy storage device are sequenced through the energy storage device to regenerate the priority discharge queue for charge and discharge priority sorting; during discharging operations, the priority charge and discharge queue is set according to the discharge limit threshold and temperature, and the power value and temperature of the current energy storage device are sequenced through the energy storage device to regenerate the priority discharge queue for charge and discharge priority sorting.

[0039] The energy storage monitoring device is also used to: estimate the remaining charging and discharging duration based on the charging and discharging time periods, and determine the matching energy storage device in the priority discharge queue based on the remaining charging and discharging duration and the temperature threshold, and switch it to the current discharge device for charging and discharging operations.

[0040] The energy storage control device is also used for: when it is currently in a discharging operation, different types of energy storage devices start to output electricity at the same time according to their respective discharge priority order until the power supply demand is met; when it is currently in a charging operation, different types of energy storage devices start to input electricity at the same time according to their respective charging priority order until all energy storage devices are fully charged or the remaining power generation meets the power supply demand. When the energy storage system is in a discharging operation state, each type of energy storage device will start to output electricity at the same time according to its discharge priority order until the current power supply demand is met. In the charging operation state, each type of energy storage device will also start to input electricity at the same time according to its charging priority order until all energy storage devices are fully charged or the remaining power generation can meet the current power supply demand. Through this orderly charging and discharging management, not only can the stability of the power supply be guaranteed, but also the existing energy storage resources can be maximized.

[0041] In the process of electric energy storage application, the present invention fully considers factors such as the charging limit and temperature of the energy storage device, so that the energy storage device can set a priority charging and discharging queue according to the charging limit threshold, the discharging limit threshold and the temperature threshold during the charging and discharging process, so that the energy storage device is always in the best efficiency state during the charging and discharging process, thereby improving the charging and discharging efficiency of the energy storage device and increasing the service life of the energy storage device.

[0042] Reference Figure 2 The second aspect of the present invention provides a method for automated remote control of energy-saving electric energy storage, comprising the following steps:

[0043] Step 1: monitor the current power supply time period and define the charging and discharging time periods;

[0044] Step 2, for monitoring the energy storage device according to the received monitoring results, obtaining the charging limit and temperature of the energy storage device, and setting the charging limit threshold, the discharging limit threshold and the temperature threshold, determining the energy storage device based on the charging limit threshold, the discharging limit threshold and the temperature threshold, thereby setting the priority charging and discharging queue, and sequencing the power value and temperature of the current energy storage device through the energy storage device to regenerate the priority discharging queue for charging and discharging priority sorting;

[0045] Step 3 is used to determine the control strategy of each type of energy storage device according to the power generation of the current power generation equipment and the charging and discharging priority order, and control different types of energy storage devices to perform charging and discharging operations simultaneously according to the monitoring results.

[0046] If the current power supply period is a peak period, the monitoring result is that the energy storage device needs to discharge; if the current power supply period is a valley period, the monitoring result is that the energy storage device needs to be charged; if the current power supply period is a normal period, no monitoring result is sent.

[0047] During charging operations, the charging limit threshold and temperature priority charging and discharging queue are set, and the power value and temperature of the current energy storage device are sequenced through the energy storage device to regenerate the priority discharge queue for charging and discharging priority sorting; during discharging operations, the discharge limit threshold and temperature priority charging and discharging queue are set, and the power value and temperature of the current energy storage device are sequenced through the energy storage device to regenerate the priority discharge queue for charging and discharging priority sorting.

[0048] According to the charging and discharging time periods, the remaining charging and discharging duration is estimated, and the matching energy storage device is determined in the priority discharge queue based on the remaining charging and discharging duration and the temperature threshold, and it is switched to the current discharge device for charging and discharging operations.

[0049] When the current operation is discharging, different types of energy storage devices start to output power at the same time in the order of their respective discharge priorities until the power supply demand is met; when the current operation is charging, different types of energy storage devices start to input power at the same time in the order of their respective charging priorities until all energy storage devices are fully charged or the remaining power generation meets the power supply demand.

[0050] The advantages of the automated remote-controlled energy-saving electric energy storage method and the automated remote-controlled energy-saving electric energy storage system described above over the prior art are the same and will not be described in detail herein.

[0051] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0052] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. An automated remote-controlled energy-saving electric energy storage system, characterized in that: include: Power supply monitoring equipment, used to monitor the current power supply time period, define the charging and discharging time periods, and send the monitoring results to the energy storage monitoring equipment and energy storage control equipment; The energy storage monitoring device is used to monitor the energy storage device according to the received monitoring results, obtain the charging limit and temperature of the energy storage device, and set the charging limit threshold, the discharging limit threshold and the temperature threshold, determine the energy storage device based on the charging limit threshold, the discharging limit threshold and the temperature threshold, thereby setting the priority charging and discharging queue, and sequence the power value and temperature of the current energy storage device through the energy storage device to regenerate the priority discharging queue for charging and discharging priority sorting; The energy storage control device is used to determine the control strategy of each type of energy storage device according to the power generation of the current power generation equipment and the charging and discharging priority order, and control different types of energy storage devices to perform charging and discharging operations simultaneously according to the monitoring results.

2. The automated remote-controlled energy-saving electric energy storage system according to claim 1, characterized in that: The power supply monitoring device is also used to: if the current power supply period is a peak power supply period, the monitoring result is that the energy storage device needs to be discharged; if the current power supply period is a valley power supply period, the monitoring result is that the energy storage device needs to be charged; If the current power supply period is a normal period, the monitoring result will not be sent.

3. The automated remote-controlled energy-saving electric energy storage system according to claim 1, characterized in that: The energy storage monitoring device is also used for: during charging operation, setting a priority charge and discharge queue with a charging limit threshold and a temperature priority, and sequencing the power value and temperature of the current energy storage device through the energy storage device to regenerate a priority discharge queue for charging and discharging priority sorting; during discharging operation, setting a priority charge and discharge queue with a discharge limit threshold and a temperature priority, and sequencing the power value and temperature of the current energy storage device through the energy storage device to regenerate a priority discharge queue for charging and discharging priority sorting.

4. The automated remote-controlled energy-saving electric energy storage system according to claim 3, characterized in that: The energy storage monitoring device is also used to: estimate the remaining charging and discharging duration based on the charging and discharging time periods, and determine the matching energy storage device in the priority discharge queue based on the remaining charging and discharging duration and the temperature threshold, and switch it to the current discharge device for charging and discharging operations.

5. The automated remote-controlled energy-saving electric energy storage system according to claim 4, characterized in that: The energy storage control device is also used for: when currently in a discharging operation, different types of energy storage devices start to output electricity at the same time in the order of their respective discharge priorities until the power supply demand is met; when currently in a charging operation, different types of energy storage devices start to input electricity at the same time in the order of their respective charging priorities until all energy storage devices are fully charged or the remaining power generation meets the power supply demand.

6. The method for automated remote control of energy-saving electric energy storage according to claim 1, characterized in that: The steps include: Step 1: monitor the current power supply time period and define the charging and discharging time periods; Step 2, for monitoring the energy storage device according to the received monitoring results, obtaining the charging limit and temperature of the energy storage device, and setting the charging limit threshold, the discharging limit threshold and the temperature threshold, determining the energy storage device based on the charging limit threshold, the discharging limit threshold and the temperature threshold, thereby setting the priority charging and discharging queue, and sequencing the power value and temperature of the current energy storage device through the energy storage device to regenerate the priority discharging queue for charging and discharging priority sorting; Step 3 is used to determine the control strategy of each type of energy storage device according to the power generation of the current power generation equipment and the charging and discharging priority order, and control different types of energy storage devices to perform charging and discharging operations simultaneously according to the monitoring results.

7. The method for automated remote control of energy-saving electric energy storage according to claim 6, characterized in that: If the current power supply period is a peak period, the monitoring result is that the energy storage device needs to discharge; if the current power supply period is a valley period, the monitoring result is that the energy storage device needs to be charged; If the current power supply period is a normal period, the monitoring result will not be sent.

8. The method for automated remote control of energy-saving electric energy storage according to claim 1, characterized in that: During charging operations, the charging limit threshold and temperature priority charging and discharging queue are set, and the power value and temperature of the current energy storage device are sequenced through the energy storage device to regenerate the priority discharge queue for charging and discharging priority sorting; during discharging operations, the discharge limit threshold and temperature priority charging and discharging queue are set, and the power value and temperature of the current energy storage device are sequenced through the energy storage device to regenerate the priority discharge queue for charging and discharging priority sorting.

9. The method for automated remote control of energy-saving electric energy storage according to claim 8, characterized in that: According to the charging and discharging time periods, the remaining charging and discharging duration is estimated, and the matching energy storage device is determined in the priority discharge queue based on the remaining charging and discharging duration and the temperature threshold, and it is switched to the current discharge device for charging and discharging operations.

10. The automated remote-controlled energy-saving electric energy storage method according to claim 9, characterized in that: When the current operation is discharging, different types of energy storage devices start to output power at the same time in the order of their respective discharge priorities until the power supply demand is met; when the current operation is charging, different types of energy storage devices start to input power at the same time in the order of their respective charging priorities until all energy storage devices are fully charged or the remaining power generation meets the power supply demand.

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