Charging method for equipment to be charged

Abstract

The invention discloses a charging method for a device to be charged, and the method comprises the steps: obtaining the real-time voltage of a thermoelectric power generation module after the conversion of an inverter, and dynamically selecting the thermoelectric power generation module to carry out the independent charging, the common charging with a battery pack or the combined charging with an AC voltage source in a grid-connected mode. In the off-grid mode, the thermoelectric power generation module and the battery pack are combined to supply power. According to the method, the thermoelectric power generation technology is effectively utilized, multi-energy cooperative control is combined, the charging efficiency is remarkably improved, and dependence on traditional energy is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of energy storage charging, and specifically refers to a charging method for a device to be charged. Background Art

[0002] With the vigorous popularization and application of new energy technologies in China, the booming development of energy storage charging piles has been driven. Currently, most energy storage batteries are replenished by the power grid. Most of the electric energy in the domestic power grid comes from thermal power generation, and burning coal for thermal power generation causes great pollution to the environment; solar power generation or wind power generation is greatly affected by the environment, and the use of thermoelectric power generation equipment in energy storage charging piles has hardly been mentioned. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. For this reason, an object of the present invention is to propose a charging method for a device to be charged, which realizes stable and efficient charging control through a thermoelectric power generation module.

[0004] To solve the above technical problems, the technical solution provided by the present invention is: A charging method for a device to be charged, the method is applied to a controller in a charging system, the charging system includes a thermoelectric power generation module and a battery pack, the thermoelectric power generation module includes a thermoelectric power generation device and an inverter, the thermoelectric power generation module and the battery pack are respectively electrically connected to the controller, and includes:

[0005] Obtain the real-time voltage output after conversion by the inverter of the thermoelectric power generation module;

[0006] When it is determined that the mode of the charging system is the grid-connected mode, control the thermoelectric power generation module to charge the device to be charged according to the real-time voltage, or control the thermoelectric power generation module and the battery pack to charge simultaneously, or control the thermoelectric power generation module, the battery pack and the AC voltage source to charge simultaneously;

[0007] Wherein, the grid-connected mode is a mode in which an AC voltage source is connected to the controller.

[0008] Preferably, the method further includes:

[0009] Obtain the real-time charging voltage of the charging system;

[0010] When the real-time charging voltage is lower than a preset threshold, control the thermoelectric power generation module, the battery pack, the AC voltage source and the electric vehicle to charge simultaneously.

[0011] Preferably, when the real-time voltage ≥ the first preset voltage, only the thermoelectric power generation module charges;

[0012] When the second preset voltage ≤ the real-time voltage < the first preset voltage, the thermoelectric power generation module and the battery pack charge together;

[0013] When the real-time voltage < the second preset voltage, the thermoelectric power generation module, the battery pack and the AC voltage source charge together.

[0014] Preferably, the method further includes:

[0015] Obtain the real-time output power of the thermoelectric power generation module;

[0016] When the real-time power ≥ the preset power, control the thermoelectric power generation module and the battery pack to charge the AC voltage source.

[0017] Preferably, the method further includes:

[0018] When the grid-connected mode is detected, a vehicle power feeding instruction is received and the real-time power ≥ the preset power, control the thermoelectric power generation module, the battery pack and the electric vehicle to charge the AC voltage source together.

[0019] Preferably, the method further includes:

[0020] In the off-grid mode, control the thermoelectric power generation module to charge alone or charge together with the battery pack according to the real-time voltage.

[0021] Preferably, the method further includes:

[0022] Receive a grid-connected instruction or an off-grid instruction through a power module to switch the system mode.

[0023] After adopting the above structure, the present invention has the following advantages:

[0024] First, use the thermoelectric power generation technology to reduce the dependence on traditional energy sources;

[0025] Second, improve the charging efficiency through multi-energy collaborative control;

[0026] Third, support reverse power supply to the power grid and optimize energy utilization.

[0027] The above summary is only for the purpose of the specification and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present invention will be readily apparent by reference to the drawings and the following detailed description. Description of the Drawings

[0028] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the accompanying drawings required for use in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0029] Figure 1 is the flowchart of the present invention. Specific embodiments

[0030] The following details the embodiments of the present application. The examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and should not be construed as a limitation of the present application.

[0031] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0032] The following further details the present invention in combination with the full text.

[0033] Combined with Figure 1 , the present invention provides a charging method, which is applied to a charging system including a thermoelectric power generation module (thermoelectric power generation device + inverter) and a battery pack. The specific steps are as follows:

[0034] Obtain the real-time voltage: Collect the output voltage after the thermoelectric power generation module is converted by the inverter. The voltage output by the thermoelectric power generation device is a low voltage and needs to be converted to a high voltage by the inverter.

[0035] Mode control: Grid-connected mode: Select the charging combination according to the real-time voltage:

[0036] Real-time voltage ≥ the first threshold: Only the thermoelectric power generation module charges;

[0037] The second threshold ≤ real-time voltage < the first threshold: The thermoelectric power generation module + the battery pack charge together;

[0038] Real-time voltage < the second threshold: The thermoelectric power generation module + the battery pack + the AC voltage source charge together.

[0039] Off-grid mode: Charge only by the thermoelectric power generation module or its combination with the battery pack.

[0040] Supplementary strategy: When the real-time charging voltage is insufficient, introduce electric vehicle collaborative charging;

[0041] When the thermoelectric power generation power is excessive, charge the power grid in reverse.

[0042] In the case where the mode of the charging system of the device to be charged is determined to be the grid-connected mode, charge the charging device according to the voltage converted by the inverter; or control the thermoelectric power generation module and the battery pack to charge the device to be charged simultaneously, or control the thermoelectric power generation module, the battery pack and the AC voltage source to charge the device to be charged simultaneously, where the grid-connected mode is the mode in which the AC voltage source is connected to the controller. Thus, considering the real-time voltage of the thermoelectric power generation module to improve the charging efficiency, and further solving the problem of low charging efficiency of the existing charging methods.

[0043] When the output voltage of the thermoelectric power generation module is low voltage, it is converted to high voltage by the inverter and then input to the controller. The controller dynamically adjusts the charging combination according to the current system mode (grid-connected / off-grid) and the real-time voltage. For example:

[0044] At noon when it is hot, the output voltage of the thermoelectric power generation module is high, and it charges the device alone;

[0045] When the temperature difference decreases in the evening, charge jointly with the battery pack;

[0046] When there is no temperature difference at night, switch to grid power supply.

[0047] The above describes the present invention and its embodiments. This description is not restrictive, and only one of the embodiments of the present invention is shown throughout the text. The actual structure is not limited thereto. All in all, if those of ordinary skill in the art are inspired by it and design similar structural methods and embodiments without creative work without departing from the purpose of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. A charging method for a device to be charged, the method being applied to a controller in a charging system, the charging system comprising a temperature difference power generation module and a battery pack, the temperature difference power generation module comprising a temperature difference power generation device and an inverter, the temperature difference power generation module and the battery pack being electrically connected to the controller respectively, characterized in that: include: Obtaining the real-time voltage output by the temperature difference power generation module after conversion by the inverter; When it is determined that the mode of the charging system is the grid-connected mode, the temperature difference power generation module is controlled to charge the device to be charged according to the real-time voltage, or the temperature difference power generation module and the battery pack are controlled to charge simultaneously, or the temperature difference power generation module, the battery pack and the AC voltage source are controlled to charge simultaneously; The grid-connected mode is a mode in which an AC voltage source is connected to a controller.

2. A charging method for a device to be charged according to claim 1, characterized in that: The method further comprises: Acquiring a real-time charging voltage of the charging system; When the real-time charging voltage is lower than a preset threshold, the temperature difference power generation module, the battery pack, the AC voltage source and the electric vehicle are controlled to charge simultaneously.

3. A charging method for a device to be charged according to claim 1, characterized in that: When the real-time voltage is greater than or equal to the first preset voltage, charging is performed only by the temperature difference power generation module; When the second preset voltage ≤ the real-time voltage < the first preset voltage, the temperature difference power generation module and the battery pack are charged together; When the real-time voltage is less than the second preset voltage, the temperature difference power generation module, the battery pack and the AC voltage source are charged together.

4. A charging method for a device to be charged according to claim 1, characterized in that: The method further comprises: Obtaining the real-time output power of the temperature difference power generation module; When the real-time power is greater than or equal to the preset power, the temperature difference power generation module and the battery pack are controlled to charge the AC voltage source.

5. A charging method for a device to be charged according to claim 4, characterized in that: The method further comprises: When the grid-connected mode is detected, the vehicle power feeding instruction is received and the real-time power is ≥ the preset power, the temperature difference power generation module, the battery pack and the electric vehicle are controlled to charge the AC voltage source together.

6. A charging method for a device to be charged according to claim 1, characterized in that: The method further comprises: In off-grid mode, the temperature difference power generation module is controlled to charge independently or together with the battery pack according to the real-time voltage.

7. A charging method for a device to be charged according to claim 1, characterized in that: The method further comprises: The power module receives the grid-connected command or the off-grid command to switch the system mode.

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