Charging system, charger and charging method

Abstract

A charging system uses a main control module to control a first charging module or a second charging module to charge a battery according to the voltage of the battery collected by an output sampling module. The first charging module uses high power to charge the battery to ensure that the battery is quickly charged above a safe voltage. The second charging module uses low power to charge the battery, and the current output can be accurately controlled to repair the battery from below a safe voltage to above a safe voltage. The charger of the present invention integrates high-power charging function and low-power charging function, combines the advantages of high-power chargers and low-power chargers, switches between different charging modes, and can adapt to the charging and repair of batteries in different states. The charging method of the present invention can intelligently and seamlessly switch between high-power charging and low-power charging, is easy to use, and has low cost.

Description

Technical Field

[0001] The present invention belongs to the field of chargers, and in particular relates to a charging system, a charger and a charging method. Background Art

[0002] A charger is a device that charges a battery by passing current through it. The charger can charge car batteries and other types of batteries. Currently, a single charger is generally used on the market to complete charging. Chargers can be divided into high-power chargers or low-power chargers. The application scenarios of high-power chargers and low-power chargers are different. High-power chargers output high power stably above the safe voltage to quickly charge the battery; low-power chargers provide safe current to repair the battery voltage to above the safe voltage when the battery voltage is over-discharged or a bad battery needs to be charged. Since it is difficult for a high-power charger to output accurate and stable low-voltage and low current, when the battery needs to be repaired or the battery is damaged, a low-power charger is required to repair the battery voltage to a safe voltage. It can be seen that the single function of the existing charger is difficult to meet the charging needs of batteries in different states. Different types of chargers are required for different battery states, which is cumbersome to operate and costly.

[0003] In view of this, it is necessary to provide a charger that is easy to use and can meet the needs of batteries in different states. Summary of the invention

[0004] In order to overcome the defects of the prior art, one object of the present invention is to provide a charging system, another object of the present invention is to provide a charger, and another object of the present invention is to provide a charging method. In order to achieve the above objects, the technical solutions adopted by the present invention are as follows:

[0005] A first aspect of the present invention provides a charging system, comprising a first charging module, a second charging module and a main control module, wherein the main control module controls the first charging module or the second charging module to charge a battery.

[0006] Optionally, when the voltage of the battery is greater than or equal to the safety voltage, the main control module controls the first charging module to charge the battery; when the voltage of the battery is less than the safety voltage, the main control module controls the second charging module to charge the battery.

[0007] Optionally, the charger further includes an output sampling module, which is used to collect the voltage of the battery and send the voltage of the battery to the main control module.

[0008] Optionally, the charger includes a first switch module and a second switch module, the first charging module is connected to the battery through the first switch module, and the second charging module is connected to the battery through the second switch module, when the main control module controls the first charging module to charge the battery, the first switch module is turned on and the second switch module is turned off, when the main control module controls the second charging module to charge the battery, the first switch module is turned off and the second switch module is turned on.

[0009] Optionally, the first charging module and the second charging module are respectively connected to an AC-DC conversion module.

[0010] A second aspect of the present invention provides a charger, comprising the charging system as described above.

[0011] A third aspect of the present invention provides a charging method for use in the aforementioned charging system, comprising the following steps:

[0012] collecting the voltage of the battery;

[0013] The battery is charged in a first manner or a second manner according to the voltage of the battery.

[0014] Optionally, when the voltage of the battery is greater than or equal to a safety voltage, the battery is charged in the first manner; when the voltage of the battery is less than the safety voltage, the battery is charged in the second manner.

[0015] Optionally, the first method is to use a large current to quickly charge the battery; the second method is to repair and charge a low-voltage or bad battery.

[0016] Optionally, the charging the battery in the second manner includes:

[0017] When the voltage of the battery is less than the first voltage, charging the battery with a first current;

[0018] After the battery is charged with the first current for a first time, the battery is charged with a second current;

[0019] After the battery is charged with the second current for a second time, the second current is increased to a third current within a third time to charge the battery.

[0020] Optionally, charging the battery in the first manner includes:

[0021] After the battery is charged with the third current for a fourth time, when it is detected that the voltage of the battery reaches the second voltage, the third current is reduced to a fourth current to charge the battery, and the voltage of the battery is reduced to the third voltage; after the battery is charged with the fourth current for a fifth time, when it is detected that the voltage of the battery reaches the fourth voltage, the fourth current is reduced to a fifth current to charge the battery, and the voltage of the battery is reduced to the fifth voltage;

[0022] After the battery is charged with the fifth current for a sixth time, the charging is completed.

[0023] The charging system of the present invention adopts a main control module to control the first charging module or the second charging module to charge the battery according to the voltage of the battery collected by the output sampling module. The first charging module uses high power to charge the battery to ensure that the battery is quickly charged above the safe voltage. The second charging module uses low power to charge the battery, which can accurately control the current output and can repair the battery from below the safe voltage to above the safe voltage. The charger of the present invention integrates high-power charging function and low-power charging function, combines the advantages of high-power chargers and low-power chargers, switches different charging modes, and can adapt to the charging and repair of batteries in different states. The charging method of the present invention can intelligently and seamlessly switch between high-power charging and low-power charging, is easy to use, low-cost, and has high practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] After reading the specific embodiments of the present invention with reference to the accompanying drawings, readers will have a clearer understanding of various aspects of the present invention.

[0025] Figure 1 A diagram of a charging system according to an embodiment of the present invention;

[0026] Figure 2 A diagram of a charging system according to another embodiment of the present invention;

[0027] Figure 3 A flow chart of a charging method according to another embodiment of the present invention;

[0028] Figure 4 A charging process diagram of another embodiment of the present invention;

[0029] Description of reference numerals:

[0030] 1: first charging module; 2: second charging module; 3: main control module; 4: output sampling module; 5: battery; 6: first switch module; 7: second switch module; 8: AC-DC conversion module. DETAILED DESCRIPTION

[0031] 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.

[0032] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0033] The technical solution of the present invention is described in detail with specific embodiments below. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0034] Embodiment 1:

[0035] This embodiment provides a charging system for charging a battery. Figure 1 The charging system includes a first charging module 1, a second charging module 2, a main control module 3 and an output sampling module 4. The input ends of the first charging module 1 and the second charging module 2 are respectively connected to the AC-DC conversion module 8, and the output ends are respectively connected to the battery 5. The main control module 3 is respectively connected to the first charging module 1, the second charging module 2, and the output sampling module 4. The output sampling module 4 is connected to the output end of the battery 5.

[0036] In this embodiment, the first charging module 1 is a high-frequency, high-power charging module, which is used to quickly charge the battery 5 with a large current; the second charging module 2 is a high-frequency, low-power charging module, which is used to repair and charge low-voltage damaged batteries; the output sampling module 4 is used to collect the voltage of the battery 5 and send the voltage to the main control module 3, and the main control module 3 is used to control the first charging module 1 or the second charging module 2 to charge the battery 5 according to the voltage of the battery 5; further, the output sampling module 4 can also collect the current of the battery 5 and send the current to the main control module 3, and the main control module 3 determines the health status of the battery 5 according to the current.

[0037] In this embodiment, when the voltage of the battery 5 is greater than or equal to the safety voltage, the main control module 3 controls the first charging module 1 to charge the battery 5, that is, a large current is used to quickly charge the battery 5. Specifically, the safety voltage is the nominal voltage of the battery 12V. In other embodiments of the present invention, the safety voltage can also be set to be less than 24V. When the voltage of the battery 5 is less than the safety voltage, the main control module 3 can determine that the battery 5 is a low voltage or bad battery and needs to be repaired. At this time, the main control module 3 controls the second charging module 2 to charge the battery 5, that is, a low-power charging module is used to repair the voltage of the battery 5 to a safe voltage. Specifically, the low-power charging module can accurately control the multi-gear current output to provide a safe current for the battery 5. Compared with the prior art, the charging system of this embodiment can intelligently switch the charging module according to the voltage of the battery 5, which is more convenient to use.

[0038] Embodiment 2:

[0039] This embodiment provides a charging system. Figure 2 The charging system includes a first charging module 1, a second charging module 2, a main control module 3, an output sampling module 4, a first switch module 6, and a second switch module 7. The input ends of the first charging module 1 and the second charging module 2 are respectively connected to the AC-DC conversion module 8, the output end of the first charging module 1 is connected to the battery 5 through the first switch module 6, and the output end of the second charging module 2 is connected to the battery 5 through the second switch module 7. The main control module 3 is respectively connected to the first charging module 1, the second charging module 2, and the output sampling module 4. The output sampling module 4 is connected to the output end of the battery 5.

[0040] In this embodiment, the first charging module 1 is a high-frequency, high-power charging module, which is used to quickly charge the battery 5 with a large current; the second charging module 2 is a high-frequency, low-power charging module, which is used to repair and charge a low-voltage damaged battery; the output sampling module 4 is used to collect the current and voltage of the battery 5, and send the current and voltage to the main control module 3; the main control module 3 is used to control the first charging module 1 or the second charging module 2 to charge the battery 5 according to the voltage. When the main control module 3 controls the first charging module 1 to charge the battery 5, the first switch module 6 is turned on and the second switch module 7 is turned off through the main control module 3; when the main control module 3 controls the second charging module 2 to charge the battery 5, the first switch module 6 is turned off and the second switch module 7 is turned on through the main control module 3; in addition, the main control module 3 can also judge the health status of the battery 5 according to the current.

[0041] In this embodiment, when the voltage of the battery 5 is greater than or equal to the safety voltage, the main control module 3 controls the first charging module 1 to charge the battery 5, that is, a large current is used to quickly charge the battery 5. Specifically, the safety voltage is the nominal voltage of the battery 12V. In other embodiments of the present invention, the safety voltage can also be set to be below 24V. At this time, the first switch module 6 is turned on and the second switch module 7 is turned off; when the voltage of the battery 5 is less than the safety voltage, the main control module 3 can determine that the battery 5 is a low voltage or bad battery and needs to be repaired. At this time, the main control module 3 controls the second charging module 2 to charge the battery 5, that is, a low-power charging module is used to repair the voltage of the battery 5 to a safe voltage. At this time, the first switch module 6 is turned off and the second switch module 7 is turned on. Specifically, the low-power charging module can accurately control the multi-gear current output to provide a safe current for the battery 5. Compared with the prior art, the charging system of this embodiment can intelligently switch the charging module according to the voltage of the battery 5, which is more convenient to use.

[0042] Embodiment three:

[0043] This embodiment provides a charger, including the charging system as described in Embodiment 1. The charging system includes a first charging module 1, a second charging module 2, a main control module 3, and an output sampling module 4. The input ends of the first charging module 1 and the second charging module 2 are respectively connected to the AC-DC conversion module 8, and the output ends are respectively connected to the battery 5. The main control module 3 is respectively connected to the first charging module 1, the second charging module 2, and the output sampling module 4. The output sampling module 4 is connected to the output end of the battery 5.

[0044] In this embodiment, when the voltage of the battery 5 is greater than or equal to the safety voltage, the main control module 3 controls the first charging module 1 to charge the battery 5. Specifically, the safety voltage is the battery nominal voltage of 12V. In other embodiments of the present invention, the safety voltage can also be set to below 24V; when the voltage of the battery 5 is less than the safety voltage, the main control module 3 can determine that the battery 5 is a low voltage or bad battery and needs to be repaired. At this time, the main control module 3 controls the second charging module 2 to charge the battery 5.

[0045] Embodiment 4:

[0046] This embodiment provides a charging method, which is applied to the charging system described in the second embodiment. Figure 3 , the charging method comprises the following steps:

[0047] S1: collecting the voltage of the battery;

[0048] S2: Determine the voltage of the battery, and charge the battery in a first manner or a second manner according to the voltage of the battery.

[0049] S21: when the voltage of the battery is greater than or equal to the safety voltage, charging the battery in the first manner; specifically, the first manner is charging the battery quickly in a large current;

[0050] S22: When the voltage of the battery is lower than the safety voltage, the battery is charged in the second manner. Specifically, the second manner is to perform repair charging on a low-voltage or damaged battery.

[0051] See also Figure 4 In this embodiment, the second method is first used to charge the battery, and when the voltage of the battery reaches a safe voltage, the first method is used to charge the battery.

[0052] In this embodiment, the specific steps of charging the battery using the second method are:

[0053] When the voltage of the battery is less than the first voltage V1, the first current I1 is used to charge the battery; specifically, the first voltage V1 is 10V, and the first current I1 is greater than 0 and less than or equal to 1A;

[0054] After the battery is charged with the first current A1 for a first time T1, the battery is charged with the second current I2; specifically, the first time T1 is 1 hour, and the second current I2 is 2A;

[0055] After the second current I2 is used to charge the battery for a second time T2, the second current I2 is increased to a third current I3 within a third time T3 to charge the battery. Specifically, the second time T2 is 2 hours, the third time T3 is 5 seconds, and the third current I3 is the rated maximum output current. At this point, the battery is repaired and can be charged in the first manner.

[0056] In this embodiment, the specific steps of charging the battery in the first manner are:

[0057] After the third current I3 is used to charge the battery for a fourth time T4, when it is detected that the voltage of the battery reaches the second voltage V2, the third current I3 is reduced to the fourth current I4 to charge the battery, and the voltage of the battery is reduced to the third voltage V3; specifically, the fourth time T4 is 4 hours, and the third voltage V3 is 75% of the second voltage V2. Specifically, the current and voltage are reduced to prevent overheating of the battery during high-current fast charging. Specifically, the fourth current I4 is 75% of I3, and the second voltage V2 is 13.6V.

[0058] After the fourth current I4 is used to charge the battery for the fifth time T5, when it is detected that the voltage of the battery reaches the fourth voltage V4, the fourth current I4 is reduced to the fifth current I5 to charge the battery, and the voltage of the battery is reduced to the fifth voltage V5; specifically, the fifth time T5 is 6 hours, and the fifth voltage V5 is 75% of the fourth voltage V4. Specifically, the current and voltage are reduced to prevent overheating of the battery during high-current fast charging. Specifically, the fifth current I5 is 75% of I4, and the fourth voltage V4 is 14V.

[0059] After the battery is charged with the fifth current I5 for a sixth time T6, the voltage of the battery reaches a sixth voltage V6, and the charging is completed. Specifically, the sixth time T6 is 8 hours, and the sixth voltage V6 is 14.6V.

[0060] The values ​​of the first voltage V1, the second voltage V2, the third voltage V3, the fourth voltage V4, the fifth voltage V5, the sixth voltage V6, the first current I1, the second current I2, the third current I3, the fourth current I4, the fifth current I5, the first time T1, the second time T2, the third time T3, the fourth time T4, the fifth time T5, and the sixth time T6 are determined according to the actual application scenario and can also be set to other values ​​in other embodiments of the present invention.

[0061] The charging system of the present invention adopts a main control module to control the first charging module or the second charging module to charge the battery according to the voltage of the battery collected by the output sampling module. The first charging module uses high power to charge the battery to ensure that the battery is quickly charged above the safe voltage. The second charging module uses low power to charge the battery, which can accurately control the current output and can repair the battery from below the safe voltage to above the safe voltage. The charger of the present invention integrates high-power charging function and low-power charging function, combines the advantages of high-power chargers and low-power chargers, switches different charging modes, and can adapt to the charging and repair of batteries in different states. The charging method of the present invention can intelligently and seamlessly switch between high-power charging and low-power charging, is easy to use, low-cost, and has high practical value.

[0062] Obviously, the above embodiments of the present invention are only examples for clearly explaining the present invention, and are not intended to limit the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. The embodiments listed in the present invention cannot exhaust all implementation methods. All obvious changes or modifications derived from the technical solutions of the present invention are still within the scope of protection of the present invention. All documents mentioned in the present invention are cited as references in this application, just as if a document is cited as a reference separately.

Claims

1. A charging system, characterized in that: It comprises a first charging module, a second charging module and a main control module, wherein the main control module controls the first charging module or the second charging module to charge the battery.

2. The charger according to claim 1, characterized in that: When the voltage of the battery is greater than or equal to the safety voltage, the main control module controls the first charging module to charge the battery; when the voltage of the battery is less than the safety voltage, the main control module controls the second charging module to charge the battery.

3. The charger according to claim 2, characterized in that: The charger also includes an output sampling module, which is used to collect the voltage of the battery and send the voltage of the battery to the main control module.

4. The battery repair method according to claim 3, characterized in that: The charger includes a first switch module and a second switch module. The first charging module is connected to the battery through the first switch module, and the second charging module is connected to the battery through the second switch module. When the main control module controls the first charging module to charge the battery, the first switch module is turned on and the second switch module is turned off. When the main control module controls the second charging module to charge the battery, the first switch module is turned off and the second switch module is turned on.

5. The battery repair method according to claim 1, characterized in that: The first charging module and the second charging module are respectively connected to the AC-DC conversion module.

6. A charger, characterized in that: Comprising a charging system as described in any one of claims 1-5.

7. A charging method, used in the charging system according to any one of claims 1 to 5, characterized in that: The following steps are involved: collecting the voltage of the battery; The battery is charged in a first manner or a second manner according to the voltage of the battery.

8. The charging method according to claim 7, characterized in that: When the voltage of the battery is greater than or equal to the safety voltage, the battery is charged in the first manner; when the voltage of the battery is less than the safety voltage, the battery is charged in the second manner.

9. The charging method according to claim 7, characterized in that: The first method is to use a large current to quickly charge the battery; the second method is to repair and charge a low-voltage or damaged battery.

10. The charging method according to claim 9, characterized in that: The second method of charging the battery is as follows: When the voltage of the battery is less than the first voltage, charging the battery with a first current; After the battery is charged with the first current for a first time, the battery is charged with a second current; After the battery is charged with the second current for a second time, the second current is increased to a third current within a third time to charge the battery.

11. The charging method according to claim 10, characterized in that: The first method of charging the battery is as follows: After the battery is charged with the third current for a fourth time, when it is detected that the voltage of the battery reaches the second voltage, the third current is reduced to a fourth current to charge the battery, and the voltage of the battery is reduced to the third voltage; after the battery is charged with the fourth current for a fifth time, when it is detected that the voltage of the battery reaches the fourth voltage, the fourth current is reduced to a fifth current to charge the battery, and the voltage of the battery is reduced to the fifth voltage; After the battery is charged with the fifth current for a sixth time, the charging is completed.

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