WO2022170581A1

WO2022170581A1 - Charger and charging method therefor

Info

Publication number: WO2022170581A1
Application number: PCT/CN2021/076571
Authority: WO
Inventors: 杨新新; 叶剑; 翟骏马
Original assignee: 杭州铅锂智行科技有限公司
Priority date: 2021-02-10
Filing date: 2021-02-10
Publication date: 2022-08-18
Also published as: CN118677054A; CN116325417A; CN116325417B

Abstract

The present invention relates to a charger. The charger comprises a controller and a charging circuit, characterized in that the charging circuit comprises a full charging mode and a non-full charging mode, and the controller controls the charging circuit to switch between the full charging mode and the non-full charging mode. Also set forth in the present invention is a charging method. By means of the charger and the charging method of the present invention, the service life of a battery can be ensured.

Description

A kind of charger and charging method thereof

technical field

The present invention relates to the field of accumulators.

Background technique

At present, in the process of charging AGM lead-acid batteries, usually three-stage charging, namely initial fast charging stage, intermediate slow charging stage, and late floating charging stage, the charger will automatically fill the battery as much as possible. If the battery is not fully charged, it will lead to aggravated oxidation of the positive electrode of the battery, hydrogen evolution of the negative electrode, water loss, etc., so that the battery life will be reduced due to charging. In addition, if the battery is not fully charged for a long time, it will lead to battery The deposition of lead sulfate in the positive electrode will also affect the performance and life of the battery.

SUMMARY OF THE INVENTION

In order to solve the above technical problems, the present invention provides a charger including a controller and a charging circuit, the charging circuit includes a full charging mode and a non-full charging mode, and the controller controls the charging circuit when the charging circuit is fully charged. Switching between the charging mode and the non-full charging mode.

Further, after the charging circuit is charged in a full charge mode for a certain number of times, the charging circuit is charged in a non-full charge mode for a certain number of times, and after the charging circuit is charged in a non-full charge mode for a certain number of times, the The charging circuit switches to the full charging mode for charging for a certain number of times.

Further, the number of times of the non-full charging mode of the charging circuit is greater than or equal to the number of times of the full charging mode of the charging circuit.

Further, the number of times of the non-full charging mode is 10 times, and the number of times of the full charging mode is 2 times.

Further, a charging mode switching circuit is also included, and the controller controls the charging circuit to switch between the full charging mode and the non-full charging mode through the charging mode switching circuit.

Further, a counting circuit is further included, and the controller controls the charging circuit to switch between the full charging mode and the non-full charging mode according to the counting circuit and through the charging mode switching circuit.

Further, the counting circuit includes a full charging mode counting circuit and a non-full charging mode counting circuit.

Further, it also includes a storage circuit and a comparison circuit, and the comparison circuit is used to compare the count value of the fully charged charging mode counting circuit or the non-full charging mode counting circuit with the corresponding value preset by the storage circuit. , the controller controls the charging mode switching circuit to control the charging circuit to switch between the full charging mode and the non-full charging mode according to the comparison result.

Further, the full charging mode is high current constant current, constant voltage and small current trickle charging, and the partial charging mode is high current constant current charging.

Further, the partial charging mode is high current constant current and constant voltage charging.

Further, the battery is charged in the full charging mode, and the ratio of the charged power to the rated capacity of the battery is greater than 100%.

Further, the battery is charged in the partial charging mode, and the ratio of the charged power to the rated capacity of the battery is less than 100%.

The present invention also protects a charging method.

The charger and the charging method of the present invention can ensure the service life of the battery.

Description of drawings

1 is a circuit block diagram of a charger according to a first embodiment of the present invention;

Fig. 2 is the charging flow chart of the charger according to the first embodiment of the present invention;

Fig. 3 is the circuit block diagram of the second embodiment of the charger of the present invention;

4 is a circuit block diagram of a rechargeable battery according to a second embodiment of the present invention;

FIG. 5 is a charging flow chart of the charger according to the second embodiment of the present invention.

Detailed ways

The present invention will be further described below with reference to the specific drawings and embodiments.

The present invention provides a charger, including a controller 6, a charging circuit 1, a counting circuit 2, a storage circuit 3, a comparison circuit 4 and a charging mode switching circuit 5, and the charging circuit 1 includes a full charging mode and a non-full charging mode . The counting circuit 2 is used to count the charging times of the charger charging circuit 1 in the latest charging mode. The counting circuit 2 may include a full charging mode counting circuit and a non-full charging mode counting circuit, and the storage circuit 3 stores the preset charging. The number of full-charge and non-full-charge charges for the mode switch of the device. The comparison circuit 4 is used for comparing the count value of the fully-charged charging mode counting circuit or the non-full-charging charging mode counting circuit with a corresponding value preset by the storage circuit 3 . The controller 6 can control the charging circuit 1 to switch between the full charging mode and the non-full charging mode through the charging mode switching circuit 5 . The charging mode of the charging circuit of the charger of the present invention can be judged by detecting the voltage or current information of the charging circuit. In the charger of the present invention, the controller 6 can control the charging circuit 1 to switch between the full charging mode and the non-full charging mode through software settings.

A charging method for a charger of the present invention includes the following steps, starting from step 1, step 2, charging a certain number of times in a fully charged charging mode or a non-full charging mode; The charging mode of the charger is switched between the full charging mode and the non-full charging mode after charging a certain number of times in the non-full charging mode. In step 2, the charging circuit 1 of the charger is charged for a certain number of times in a full charging mode or a non-full charging mode. In step 3, the counting circuit 2 of the charger records the number of times of charging in the full charging mode or the non-full charging mode, and the comparison circuit compares the count value of the full charging mode counting circuit or the non-full charging mode counting circuit with the storage circuit 3 preset. The corresponding value of the charging circuit for mode switching is compared. If the preset value is reached, the controller 6 can control the charging circuit to switch between the full charging mode and the non-full charging mode through the charging mode switching circuit 5 . For example: if the comparison circuit 4 compares the count value of the counting circuit in the non-full charging mode to be greater than or equal to the number of non-full charging times preset in the storage circuit 3, the controller 6 controls the charging circuit 1 to charge in the full charging mode; When the circuit 4 compares the count value of the full charge mode counting circuit to be greater than or equal to the preset full charge times in the storage circuit 3, the controller 6 controls the charging circuit 1 to charge in a non-full charge mode; if it does not reach the preset value , the charging circuit of the charger continues to charge in the same charging mode.

The present invention provides a charger for a rechargeable battery 7 according to the second embodiment, including a controller 6, a charging circuit 1, a detection circuit 2, a storage circuit 3, a comparison circuit 4 and a charging mode switching circuit 5, and the charging circuit 1 includes a fully charged circuit charging mode and partial charging mode. The last charging mode of the rechargeable battery has two modes, namely full charging mode or partial charging mode. The storage circuit 3 stores the preset number of times of full charging and the number of times of non-full charging. The detection circuit 2 is used for detecting the number of times the rechargeable battery is charged in the latest charging mode. The comparison circuit 3 is used for comparing the number of times detected by the detection circuit 2 with the number of times preset in the storage circuit 3 . The charging mode of the rechargeable battery 7 of the present invention can be judged by detecting the voltage or current information of the rechargeable battery. In the charger of the present invention, the controller 6 can control the charging circuit 1 to switch between the full charging mode and the non-full charging mode through software settings.

The detection circuit 2 of the present invention can also be replaced by a receiving circuit, which is used for receiving the number of times the rechargeable battery is charged in the latest charging mode, which can also achieve the purpose of the present invention.

The charging method of the charger according to the second embodiment of the present invention includes the following steps, starting from step 1; step 2 to detect or receive the number of times the rechargeable battery is charged in the latest charging mode; step 3 to store the number of times with the charger The number of times preset in the circuit is compared; in step 4, when the number of times reaches the number of times preset in the charger storage circuit, the charger is charged in a charging mode different from the most recent charging mode of the rechargeable battery. When the number of times detected or received by the detection circuit 2 reaches the preset number of times in the storage circuit 3 , the controller 6 can control the charging circuit 1 through the charging mode switching circuit 5 to charge the charging circuit 1 in a charging mode different from the most recent charging mode of the rechargeable battery 7 . . For example: when the number of non-full charging modes detected or received by the detection circuit 2 reaches the preset number of non-full charging charging times in the storage circuit 3, if the current charging mode of the charger is the full charging mode, the charging circuit 1 uses the current charging mode as the current charging mode. The charging mode is used for charging; if the current charging mode is a non-full charging mode, the charging circuit 1 switches to the full charging mode for charging. When the number of full charging modes detected or received by the detection circuit 2 reaches the preset full charging times in the storage circuit 3, if the current charging mode of the charger is a non-full charging mode, the charging circuit 1 will charge in the current charging mode ; If the current charging mode is the full charging mode, the charging circuit 1 switches to the non-full charging mode for charging. Step 4: When the number of times does not reach the preset number of times in the charger storage circuit, the charger is charged in the same charging mode as the most recent charging mode of the rechargeable battery.

The number of times of the non-full charging mode in the charger storage circuit 3 of the present invention can be set to 2-10 times, such as 10 times, and the number of times of the fully-charged charging mode can be set to 1-5 times, such as 2 times. When the number of consecutive non-full charging modes reaches 10, the next charger will be in full charging mode. When the latest continuous full charging mode of the charger reaches 2 times, the next charger will be in non-full charging mode. . The specific number of times can be set reasonably according to needs. In addition, the number of times of the partial charging mode of the charging circuit is preferably equal to or greater than the number of times of the full charging mode of the charging circuit. The invention is particularly suitable for charging certain batteries.

The full charging mode of the charging circuit 1 of the present invention can be high current constant current, constant voltage and small current trickle charging; the partial charging mode can be high current constant current charging, or high current constant current and constant voltage charging . In addition, the fully charged charging mode can preferably be that the ratio of the battery charged to the rated capacity is greater than 100%; the non-full charging mode can be that the ratio of the battery charged to the rated capacity is preferably less than 100%. The specific charging methods for the full-charge charging mode and the non-full-charge charging mode can be reasonably set as required, and are not the focus of the present invention. The specific charging capacity of full charging mode and non-full charging mode can have different values according to different types of batteries, different life requirements, etc. For example, the full charging mode can be charged for the battery and the rated capacity. The ratio is greater than 95%; the non-full charging mode may be that the ratio of the charged power to the rated capacity for charging the battery is less than 95%, which is not the focus of the present invention.

The invention can ensure the life of the battery through partial charging, and can avoid the irreversibility of the lead sulfate of the positive electrode of the battery caused by the partial charging for a long time. Thereby avoiding damage to the battery. Ensure the performance and life of the battery.

In addition, the charger of the present invention can also be applied to other secondary batteries, such as lithium batteries.

The full charging mode and the non-full charging mode of the charging circuit of the present invention can be implemented by one circuit, or can be implemented by two independent circuits.

The above-mentioned embodiment is only a preferred solution of the present invention, and does not limit the present invention in any form, and there are other variations and modifications under the premise of not exceeding the technical solution recorded in the claims.

Claims

A charger, comprising a controller and a charging circuit, characterized in that the charging circuit includes a full charging mode and a non-full charging mode, and the controller controls the charging circuit to operate in the full charging mode and all the charging modes. switch between the non-full charging modes described above.
The charger according to claim 1, wherein after the charging circuit is charged in a full charging mode for a certain number of times, the charging circuit is charged in a non-full charging mode for a certain number of times, and the charging circuit is After charging in the non-full charging mode for a certain number of times, the charging circuit switches to the full charging mode for charging for a certain number of times.
The charger according to claim 2, wherein the number of times of the non-full charging mode of the charging circuit is greater than or equal to the number of times of the full charging mode of the charging circuit.
A charger according to claim 2, wherein the number of times of the non-full charging mode is 5-10 times, and the number of times of the full charging mode is 1-5 times.
The charger according to any one of claims 1-4, further comprising a charging mode switching circuit, wherein the controller controls the charging circuit to charge at the full charge through the charging mode switching circuit mode and the partial charging mode.
The charger according to any one of claims 1-4, further comprising a counting circuit, and the controller controls the charging circuit in the full charging mode and the charging mode according to the counting circuit. Toggle between charging modes that are not fully charged.
The charger according to claim 6, wherein the counting circuit comprises a full charging mode counting circuit and a non-full charging mode counting circuit.
The charger according to claim 7, further comprising a storage circuit and a comparison circuit, wherein the comparison circuit is used to compare the count value of the full charging mode counting circuit or the non-full charging mode counting circuit Comparing with the corresponding value preset by the storage circuit, the controller controls the charging circuit to switch between the full charging mode and the non-full charging mode according to the comparison result.
The charger according to any one of claims 1-4, wherein the full charging mode is high current constant current, constant voltage and small current trickle charging, and the partial charging mode is: High current constant current charging.
The charger according to claim 9, wherein the partial charging mode is high-current, constant-current, and constant-voltage charging.
The charger according to any one of claims 1-4, characterized in that, when the battery is charged in the full charging mode, the ratio of the charged power to the rated capacity of the battery is greater than 100%.
The charger according to any one of claims 1-4, characterized in that, when the battery is charged in the partial charging mode, the ratio of the charged power to the rated capacity of the battery is less than 100%.
A charging method for a charger, comprising the following steps, starting from step 1, step 2, the charger is charged for a certain number of times in a full-charge charging mode or a non-full-charge charging mode; step 3, the charger is in the full-charge charging mode or non-full-charge charging mode The charging mode of the charger is switched between the full charging mode and the non-full charging mode after charging a certain number of times in the full charging mode.
A charging method for a charger according to claim 13, characterized in that, in the step 2, the charging circuit of the charger is charged for a certain number of times in a full charging mode or a non-full charging mode.
A charging method for a charger according to claim 14, wherein the charger includes a counting circuit, and in step 3, through the counting circuit, the charging mode of the charger is in the full charging mode. Switching between the charging mode and the non-full charging mode.
A charging method for a charger according to claim 15, characterized in that, the charger further comprises a storage circuit and a comparison circuit, and the comparison circuit is used to count the number of times of charging in the full charging mode of the counting circuit or the partial charging circuit. The number of times of charging in the charging mode is compared with a corresponding value preset by the storage circuit, and the charging circuit is controlled to switch between the full charging mode and the non-full charging mode according to the comparison result.
The charging method of a charger according to any one of claims 13-16, wherein the charger comprises a controller, and the controller controls the charging mode of the charger to charge at the full charge mode and the partial charging mode.