Lead-acid battery recharging method

Abstract

The application provides a lead-acid battery power supplement method, and belongs to the technical field of lead-acid battery applications, and comprises the following steps: in response to a charging interruption signal, determining the current charging state of a target lead-acid battery; if the current charging state is a non-full stage, counting once and storing the count; the non-full stage comprises the following stages in sequence: a pre-charging stage, a large-current stage, a current-reducing stage, a small-current constant-current stage and a floating charging stage; in response to a charging start signal, determining whether the count reaches a target value; if yes, after the target lead-acid battery completes the floating charging stage, controlling the target lead-acid battery to enter a constant-current power supplement stage; and in response to the target lead-acid battery completing the constant-current power supplement stage, entering a full stage and clearing the count. The application can optimize the charging of the lead-acid battery, thereby slowing down the capacity attenuation of the lead-acid battery, prolonging the service life of the lead-acid battery, improving the use experience of customers, and being simple to implement, low in cost and easy to popularize.

Description

Technical Field

[0001] This invention relates to the field of lead-acid battery application technology, and in particular to a method for replenishing lead-acid batteries. Background Technology

[0002] Lead-acid batteries (VRLA) are rechargeable batteries whose electrodes are primarily made of lead and its oxides, and whose electrolyte is a sulfuric acid solution. In the discharged state, the positive electrode of a VRLA battery is mainly composed of lead dioxide, and the negative electrode is mainly composed of lead; in the charged state, both the positive and negative electrodes are mainly composed of lead sulfate. In daily use, improper charging habits will accelerate the capacity loss of lead-acid batteries and reduce their lifespan. Summary of the Invention

[0003] The technical problem of this invention is to provide a method for replenishing lead-acid batteries, which can optimize the charging process of lead-acid batteries and maintain them.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows.

[0005] A lead-acid battery charging method includes the following steps: S1 In response to a charging interruption signal, the current charging state of the target lead-acid battery is determined. If the current charging state is in the non-fully charged stage, a count is performed and stored. The non-fully charged stage includes, in sequence, a pre-charge stage, a high-current stage, a low-current constant-current stage, and a float charge stage. S2 In response to a charging start signal, it is determined whether the count has reached the target value. If it has, after the target lead-acid battery completes the float charge stage, it is controlled to enter the constant-current charging stage. S3 In response to the target lead-acid battery completing the constant-current charging stage, it enters the fully charged stage and the count is reset to zero. By forcibly performing constant-current charging after the count reaches the preset value and after float charging is completed, the charging method is optimized in a simple and easy way, slowing down the capacity decay of the lead-acid battery and extending its service life.

[0006] Furthermore, the constant current charging stage refers to charging the target lead-acid battery with a stable current lower than the preset value for a preset time.

[0007] Furthermore, the method for determining the current charging state of the target lead-acid battery in S1 is as follows: the current charging state of the target lead-acid battery is determined based on the output current of the charger. If the output current of the charger is not 0, the current charging state is determined to be in the non-fully charged stage; if the output current of the charger is 0, the current charging state is determined to be in the fully charged stage.

[0008] Furthermore, S1 also includes: in response to a charging interruption signal, determining the current charging state of the target lead-acid battery; if the output current of the charger is 0, determining that the current charging state is in the full charge stage, and resetting the count to zero.

[0009] Furthermore, S2 also includes: in response to the charging start signal, determining whether the count has reached the target value; if it has, and determining that the target lead-acid battery has not entered the full charge stage and received a charging interruption signal, incrementing the count by 1 and storing it.

[0010] Furthermore, S2 also includes: in response to the charging start signal, determining whether the count has reached the target value; if not, and determining that the target lead-acid battery has entered the full charge stage, resetting the count to zero.

[0011] Furthermore, S2 also includes: in response to the charging start signal, determining whether the count has reached the target value; if not, and determining that the target lead-acid battery has not entered the full charge stage and received a charging interruption signal, incrementing the count by 1 and storing it.

[0012] Furthermore, the constant current charging phase ends when the maximum cutoff voltage is reached or the charging time threshold is reached. Attached Figure Description

[0013] The invention, its features, shape, and advantages will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings. Like reference numerals denote like parts throughout the drawings. The drawings are not intentionally drawn to scale; the focus is on illustrating the spirit of the invention.

[0014] Figure 1 This is a flowchart of the lead-acid battery charging method provided by the present invention. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but these are not intended to limit the scope of the invention.

[0016] The lead-acid battery charging method provided by this invention is mainly implemented by a smart charger controlled by a single-chip microcomputer. When charging the lead-acid battery, the charger mainly includes a non-fully charged stage and a fully charged stage. The non-fully charged stage includes a pre-charge stage, a high-current stage, a low-current constant-current stage, and a float charge stage.

[0017] like Figure 1 As shown, when a charging interruption signal is received, the current charging state of the target lead-acid battery is determined. If the current charging state is not fully charged, the microcontroller will trigger an I / O operation. 2C performs a count and stores the count. When the charging start signal is received again, if the count reaches the target value (which is actually 5) and the target lead-acid battery has completed the float charging stage, the target lead-acid battery is forced to enter the constant current charging stage. This involves charging the target lead-acid battery with a stable current lower than a preset value for a preset time. In this embodiment, the target lead-acid battery is charged with a 5A current for four hours, with a maximum cutoff voltage of 30V. After completing the constant current charging stage, the battery enters the full charge stage, and the count is reset to zero. If the count reaches the target value, but the target lead-acid battery has not entered the full charge stage during the next charging process and a charging interruption signal is received, the count is incremented by 1 and stored.

[0018] If the count does not reach the target value, the target lead-acid battery will enter a fully charged state in the next charge, and the count will be reset to zero. If the count does not reach the target value, and it is determined that the target lead-acid battery has not entered the fully charged stage and a charging interruption signal is received, the count will be incremented by 1 and stored.

[0019] If charging is interrupted, the charger's output current is 0, indicating that the current charging state is in the full charge stage, and the counter is reset to zero.

[0020] In summary, the lead-acid battery charging method provided by this invention can optimize the charging of lead-acid batteries, thereby slowing down the capacity decay of lead-acid batteries, extending their service life, and improving the user experience. Moreover, this invention is simple to implement, low in cost, and easy to promote.

[0021] The preferred embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above. The devices and structures not described in detail should be understood as being implemented in a conventional manner in the art. Any person skilled in the art can make many possible changes and modifications, or equivalent changes to equivalent embodiments without departing from the technical solution of the present invention. This does not affect the substantive content of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall still fall within the protection scope of the technical solution of the present invention.

Claims

1. A method of recharging a lead-acid battery, characterized in that, The method comprises the following steps: S1, in response to a charging interruption signal, judging a current charging state of the target lead-acid battery, if the current charging state is a non-full stage, counting once and storing the count; The non-full stage comprises in turn a pre-charging stage, a large-current stage, a current-reducing stage, a small-current constant-current stage and a floating charging stage; S2, in response to a charging start signal, judging whether the count reaches a target value, if yes, after the target lead-acid battery completes the floating charging stage, controlling the target lead-acid battery to enter a constant-current power compensation stage; S3, in response to the target lead-acid battery completing the constant-current power compensation stage, entering a full stage and clearing the count.

2. The method of claim 1, wherein, The constant-current power compensation stage refers to charging the target lead-acid battery with a stable current lower than a preset value for a preset time.

3. The method of claim 2, wherein, The method for judging the current charging state of the target lead-acid battery in S1 is judging the current charging state of the target lead-acid battery according to the output current of the charger, if the output current of the charger is not 0, judging that the current charging state is the non-full stage, and if the output current of the charger is 0, judging that the current charging state is the full stage.

4. The method of claim 3, wherein, S1 further comprises: In response to the charging interruption signal, judging the current charging state of the target lead-acid battery, if the output current of the charger is 0, judging that the current charging state is the full stage and clearing the count.

5. The method of claim 4, wherein, S2 further comprises: In response to the charging start signal, judging whether the count reaches the target value, if yes, and judging that the target lead-acid battery does not enter the full stage to receive the charging interruption signal, adding 1 to the count and storing the count.

6. The method of claim 5, wherein, S2 further comprises: In response to the charging start signal, judging whether the count reaches the target value, if no, and judging that the target lead-acid battery enters the full stage, clearing the count.

7. The method of claim 6, wherein, S2 further comprises: In response to the charging start signal, judging whether the count reaches the target value, if no, and judging that the target lead-acid battery does not enter the full stage to receive the charging interruption signal, adding 1 to the count and storing the count.

8. The method of claim 2, wherein, The constant-current power compensation stage ends when the constant-current power compensation stage reaches the highest cut-off voltage or reaches a charging time threshold.

Images