Quick charging method, system and equipment

Abstract

The invention relates to the technical field of charging, in particular to a quick charging method, system and equipment, and the method comprises the steps: firstly detecting the voltage of a battery during charging in real time, then detecting the real-time charging current of the charger when the voltage of the battery is smaller than the maximum output voltage of the charger, and according to the real-time charging current of the charger and the voltage of the battery, charging the battery. The real-time charging power of the battery is calculated, finally, the charging current is adjusted according to the real-time charging power and the rated charging power of the charger, and when the battery voltage is equal to the maximum output voltage of the charger, the charger enters a constant-voltage charging mode, and charging is conducted with the maximum output voltage of the charger. In the constant-current charging stage when the battery voltage does not reach the maximum charging voltage of the charger, the charging current is increased to enable the charger to charge at the rated power, so that the charging efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the field of charging technology, and in particular to a fast charging method, system and device. Background Art

[0002] Currently, the constant current-constant voltage (CC-CV) charging mode is commonly used in the battery charging field for lightweight two-wheeled vehicles. This means that the battery is first charged with a constant current. When the battery voltage reaches a set voltage value, the charging mode is switched to constant voltage charging. The current gradually decreases as the battery voltage increases until the battery is fully charged. However, this charging strategy has the following problems: when the battery voltage is low, the charging device cannot achieve its maximum power, charging efficiency is low, and charging time is significantly prolonged, making it difficult to meet modern demand for fast charging. Summary of the Invention

[0003] In view of this, an object of the present invention is to provide a fast charging method, system and device to overcome the problems existing in the current prior art.

[0004] To achieve the above objectives, the present invention adopts the following technical solutions: In a first aspect, the present application provides a fast charging method, comprising: Real-time detection of battery voltage during charging; When the battery voltage is less than the maximum output voltage of the charger, detecting the real-time charging current of the charger; Calculating the real-time charging power of the battery according to the real-time charging current of the charger and the battery voltage; adjusting the charging current according to the real-time charging power and the rated charging power of the charger; When the battery voltage is equal to the maximum output voltage of the charger, the charger enters a constant voltage charging mode and charges at the maximum output voltage of the charger.

[0005] Furthermore, in the above method, when the battery voltage is less than the maximum output voltage of the charger, detecting the real-time charging current of the charger includes: When the battery voltage is less than the maximum output voltage of the charger, determining whether the battery voltage reaches a safe charging voltage; If not, the charger enters a constant current charging mode and charges the battery at the maximum safe charging current; If the battery voltage reaches the safe charging voltage, the real-time charging current of the charger is detected.

[0006] Furthermore, in the above method, adjusting the charging current according to the real-time charging power and the rated charging power of the charger includes: When the real-time charging power is greater than the rated charging power of the charger, reducing the real-time charging current of the charger; When the real-time charging power is less than the rated charging power of the charger, the real-time charging current of the charger is increased so that the charger charges the battery at the rated charging power.

[0007] In a second aspect, the present application provides a fast charging system, comprising: Charging interface module, used for docking rechargeable batteries; A voltage detection module, used for detecting the voltage of the rechargeable battery in real time; Current detection module, used to detect the real-time charging current of the charger; A voltage comparison module, used to detect whether the voltage of the rechargeable battery is less than the maximum output voltage of the charger; a power calculation module, configured to calculate the real-time charging power of the rechargeable battery according to the real-time charging current of the charger and the voltage of the rechargeable battery when the voltage of the rechargeable battery is less than the maximum output voltage of the charger; The charging adjustment module adjusts the charging current according to the real-time charging power and the rated charging power of the charger; and is also used to, when the voltage of the rechargeable battery is equal to the maximum output voltage of the charger, cause the charger to enter a constant voltage charging mode and charge at the maximum output voltage of the charger.

[0008] Furthermore, in the above-mentioned system, the voltage comparison module is further configured to determine whether the voltage of the rechargeable battery reaches a safe charging voltage when the voltage of the rechargeable battery is less than the maximum output voltage of the charger; The charging adjustment module is further configured to cause the charger to enter a constant current charging mode and charge the rechargeable battery at a maximum safe charging current if the voltage of the rechargeable battery does not reach a safe charging voltage.

[0009] In a third aspect, the present application provides a fast charging device, including a processor and a memory, wherein the processor is connected to the memory: The processor is configured to call and execute the program stored in the memory; The memory is used to store the program, and the program is at least used to execute any one of the fast charging methods described above.

[0010] The beneficial effects of the present invention are: This application first detects the battery voltage during charging in real time. Then, when the battery voltage is less than the maximum output voltage of the charger, it detects the real-time charging current of the charger. Based on the real-time charging current of the charger and the battery voltage, it calculates the real-time charging power of the battery. Finally, it adjusts the charging current based on the real-time charging power and the rated charging power of the charger. When the battery voltage is equal to the maximum output voltage of the charger, the charger enters the constant voltage charging mode and charges at the maximum output voltage of the charger. In this application, during the constant current charging stage when the battery voltage has not reached the maximum charging voltage of the charger, the charger is charged at the rated power by increasing the charging current, thereby improving the charging efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. 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 any creative work.

[0012] Figure 1 This is a flowchart provided by an embodiment of a fast charging method of the present invention; Figure 2 This is a structural diagram of an embodiment of a fast charging system provided by the present invention; Figure 3 This is a structural diagram provided by an embodiment of a fast charging device of the present invention. DETAILED DESCRIPTION

[0013] To make the objectives, technical solutions, and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other implementations obtained by those of ordinary skill in the art without inventive effort are within the scope of protection of the present invention.

[0014] Figure 1 This is a flowchart of an embodiment of a fast charging method of the present invention. Figure 1 , this embodiment may include the following steps: S1, real-time detection of the battery voltage during charging; S2. When the battery voltage is lower than the maximum output voltage of the charger, detect the real-time charging current of the charger; S3. Calculate the real-time charging power of the battery based on the real-time charging current of the charger and the battery voltage; S4. Adjust the charging current according to the real-time charging power and the rated charging power of the charger; S5. When the battery voltage is equal to the maximum output voltage of the charger, the charger enters the constant voltage charging mode and charges at the maximum output voltage of the charger.

[0015] It is understandable that the present application first detects the battery voltage during charging in real time. Then, when the battery voltage is less than the maximum output voltage of the charger, the real-time charging current of the charger is detected. Based on the real-time charging current of the charger and the battery voltage, the real-time charging power of the battery is calculated. Finally, the charging current is adjusted based on the real-time charging power and the rated charging power of the charger. When the battery voltage is equal to the maximum output voltage of the charger, the charger enters the constant voltage charging mode and charges at the maximum output voltage of the charger. In the present application, during the constant current charging stage when the battery voltage has not reached the maximum charging voltage of the charger, the charging current is increased so that the charger charges at the rated power, thereby improving the charging efficiency.

[0016] Preferably, step S2 includes: When the battery voltage is lower than the maximum output voltage of the charger, the real-time charging current of the charger is detected, including: When the battery voltage is lower than the maximum output voltage of the charger, determine whether the battery voltage has reached the safe charging voltage; If not, the charger enters constant current charging mode and charges with the battery's maximum safe charging current; If the battery voltage reaches the safe charging voltage, the real-time charging current of the charger is detected.

[0017] It is understandable that in order to ensure charging safety, when the battery voltage is lower than the maximum output voltage of the charger, the current voltage of the battery will be detected to see if it reaches the safe charging voltage. Only after it reaches the safe charging voltage will the constant power charging mode be implemented, that is, the real-time charging power is calculated based on the real-time battery voltage and the real-time charging current, and then the charging current is adjusted according to the size of the real-time charging power.

[0018] Preferably, step S4 includes: When the real-time charging power is greater than the rated charging power of the charger, the real-time charging current of the charger is reduced; When the real-time charging power is less than the rated charging power of the charger, the real-time charging current of the charger is increased so that the charger charges the battery at the rated charging power.

[0019] In specific practice, for a battery with a SOC (remaining capacity) of 0%, it will first enter the first stage, namely the constant current charging stage, and adjust the charger to charge with the battery's maximum safe charging current. When the battery voltage reaches the safe charging voltage, it enters the second stage, namely the constant power charging stage. According to the real-time charging power, the charging current of the charger is adjusted so that the charger charges the battery at a constant rated power. When the battery voltage reaches the maximum charging voltage of the charger, it enters the third stage, namely the constant voltage charging stage, and charges the battery with the maximum charging voltage of the charger until the battery is fully charged.

[0020] For a battery with remaining power, the battery voltage will be detected first to determine which charging stage the battery is currently in, and then the corresponding charging method will be adopted to charge the current battery.

[0021] The present invention also provides a fast charging system for implementing the above method embodiment. Figure 2 This is a structural diagram of an embodiment of a fast charging system provided by the present invention. Figure 2 Shown, including: Charging interface module 1, used for connecting to a rechargeable battery; Voltage detection module 2, used for real-time detection of the voltage of the rechargeable battery; Current detection module 3, used to detect the real-time charging current of the charger; The voltage comparison module 4 is used to detect whether the voltage of the rechargeable battery is less than the maximum output voltage of the charger; The power calculation module 5 is used to calculate the real-time charging power of the rechargeable battery according to the real-time charging current of the charger and the voltage of the rechargeable battery when the voltage of the rechargeable battery is less than the maximum output voltage of the charger; The charging adjustment module 6 adjusts the charging current according to the real-time charging power and the rated charging power of the charger; and is also used to, when the voltage of the rechargeable battery is equal to the maximum output voltage of the charger, enable the charger to enter a constant voltage charging mode and charge at the maximum output voltage of the charger.

[0022] Preferably, the voltage comparison module 4 is further configured to determine whether the voltage of the rechargeable battery reaches a safe charging voltage when the voltage of the rechargeable battery is less than the maximum output voltage of the charger; The charging adjustment module 6 is further configured to, if the voltage of the rechargeable battery does not reach the safe charging voltage, cause the charger to enter a constant current charging mode and charge the rechargeable battery with the maximum safe charging current.

[0023] Regarding the system in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0024] The present invention also provides a fast charging device for implementing the above method embodiment. Figure 3 This is a structural diagram of an embodiment of a fast charging device provided by the present invention. Figure 3 As shown, the fast charging device of this embodiment includes a processor 21 and a memory 22, and the processor 21 is connected to the memory 22. The processor 21 is used to call and execute the program stored in the memory 22; the memory 22 is used to store the program, and the program is used to at least execute the fast charging method in the above embodiment.

[0025] The specific implementation scheme of the fast charging device provided in the embodiments of the present application can refer to the implementation scheme of the fast charging method in any of the above embodiments, and will not be repeated here.

[0026] It can be understood that the same or similar parts of the above embodiments can be referenced to each other, and the contents not described in detail in some embodiments can refer to the same or similar contents in other embodiments.

[0027] It should be noted that, in the description of the present invention, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, the meaning of "plurality" is at least two.

[0028] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code comprising one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present invention includes alternative implementations in which functions may be performed out of the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present invention pertain.

[0029] It should be understood that various components of the present invention may be implemented using hardware, software, firmware, or a combination thereof. In the above-described embodiments, multiple steps or methods may be implemented using software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented using hardware, as in another embodiment, any one of the following technologies known in the art or a combination thereof may be used: a discrete logic circuit having logic gate circuits for implementing logic functions on data signals, an application-specific integrated circuit having suitable combinational logic gate circuits, a programmable gate array (PGA), a field-programmable gate array (FPGA), etc.

[0030] Those skilled in the art will understand that all or part of the steps in the method of the above embodiment can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium. When the program is executed, it includes one or a combination of the steps of the method embodiment.

[0031] In addition, the functional units in the various embodiments of the present invention may be integrated into a single processing module, or each unit may exist physically separately, or two or more units may be integrated into a single module. The aforementioned integrated modules may be implemented in the form of hardware or in the form of software functional modules. If the integrated modules are implemented in the form of software functional modules and sold or used as independent products, they may also be stored in a computer-readable storage medium.

[0032] The storage medium mentioned above can be a read-only memory, a magnetic disk or an optical disk, etc.

[0033] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0034] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A fast charging method, characterized in that: include: Real-time detection of battery voltage during charging; When the battery voltage is less than the maximum output voltage of the charger, detecting the real-time charging current of the charger; Calculating the real-time charging power of the battery according to the real-time charging current of the charger and the battery voltage; adjusting the charging current according to the real-time charging power and the rated charging power of the charger; When the battery voltage is equal to the maximum output voltage of the charger, the charger enters a constant voltage charging mode and charges at the maximum output voltage of the charger.

2. The method according to claim 1, characterized in that When the battery voltage is less than the maximum output voltage of the charger, detecting the real-time charging current of the charger comprises: When the battery voltage is less than the maximum output voltage of the charger, determining whether the battery voltage reaches a safe charging voltage; If not, the charger enters a constant current charging mode and charges the battery at the maximum safe charging current; If the battery voltage reaches the safe charging voltage, the real-time charging current of the charger is detected.

3. The method according to claim 2, characterized in that The adjusting the charging current according to the real-time charging power and the rated charging power of the charger includes: When the real-time charging power is greater than the rated charging power of the charger, reducing the real-time charging current of the charger; When the real-time charging power is less than the rated charging power of the charger, the real-time charging current of the charger is increased so that the charger charges the battery at the rated charging power.

4. A fast charging system, characterized in that: include: Charging interface module, used for docking rechargeable batteries; A voltage detection module, used for detecting the voltage of the rechargeable battery in real time; Current detection module, used to detect the real-time charging current of the charger; A voltage comparison module, used to detect whether the voltage of the rechargeable battery is less than the maximum output voltage of the charger; a power calculation module, configured to calculate the real-time charging power of the rechargeable battery according to the real-time charging current of the charger and the voltage of the rechargeable battery when the voltage of the rechargeable battery is less than the maximum output voltage of the charger; The charging adjustment module adjusts the charging current according to the real-time charging power and the rated charging power of the charger; and is also used to, when the voltage of the rechargeable battery is equal to the maximum output voltage of the charger, cause the charger to enter a constant voltage charging mode and charge at the maximum output voltage of the charger.

5. The system according to claim 4, characterized in that The voltage comparison module is further configured to determine whether the voltage of the rechargeable battery reaches a safe charging voltage when the voltage of the rechargeable battery is less than the maximum output voltage of the charger; The charging adjustment module is further configured to cause the charger to enter a constant current charging mode and charge the rechargeable battery at a maximum safe charging current if the voltage of the rechargeable battery does not reach a safe charging voltage.

6. A fast charging device, characterized in that: The device comprises a processor and a memory, wherein the processor is connected to the memory: The processor is configured to call and execute the program stored in the memory; The memory is used to store the program, and the program is at least used to execute the fast charging method according to any one of claims 1 to 3.

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