A charging method for a battery

Abstract

The present invention provides a charging method for a charger of a battery, characterized in that the charger charges the battery with the output power per unit time of the current charging, and the charger charges the battery with the output power per unit time of the next charging for the next charging, if the charging program of the current charging is completed, the output power per unit time of the next charging is lower than the output power per unit time of the current charging; if the charging program of the current charging is not completed, the output power per unit time of the next charging is higher than the output power per unit time of the current charging. The charging method of the present invention can reduce the energy consumption of the charger and ensure the life of the battery.

Description

Technical Field

[0001] The invention relates to the field of charging. Background Art

[0002] At present, storage batteries have been widely used in electric bicycles. With the emergence of lithium-ion batteries, they are gradually being used in electric bicycles. In order to solve the charging safety, users are required to charge through community charging piles. At present, charging piles are basically set up for the charging safety of lithium-ion batteries. When it is detected that the charging power of the charger is lower than a certain power value, the charging pile considers that the charging is completed. At this time, the charging pile will start to cut off the power supply after a short delay. However, for battery users, due to the different charging characteristics of storage batteries and lithium-ions, if the battery is to be fully charged, it needs to be charged at a low power for a period of time at the end of charging. Since the power at this time is relatively small, the setting of the charging pile may cause the battery users who have been charging on the charging pile to be unable to be fully charged for a long time, which will cause the battery life to be reduced. By increasing the charging power of the charger to a certain value at the end of charging, all charging piles on the market will not be powered off due to the low-power charging performed by the charger at the end of charging. Although this can solve the problem of battery life caused by the battery user not being able to fully charge for a long time due to the power outage of the charging pile, since the power outage powers of different charging piles are different, if the charger is always running at the set highest power, it will lead to a waste of charger power, which will also affect the life of the charger or cause excessive water loss in the battery, which will also affect the battery life. In addition, since users charge on different charging piles, the power outage powers and delayed cut-off times set for different charging piles are not consistent. It is particularly important to design a suitable charging program according to the user's charging scenario to ensure the user's riding experience, battery life, reduce the energy consumption of the charger, and simplify the charging program. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides a charging method for a charger of a battery, characterized in that the charger charges the battery with the output power per unit time of this charging this time, and charges the battery with the output power per unit time of the next charging next time, if the charging program of this charging is completed, the output power per unit time of the next charging is lower than the output power per unit time of this charging; if the charging program of this charging is not completed, the output power per unit time of the next charging is higher than the output power per unit time of this charging.

[0004] Further, the charging mode of the charger is to charge in a first charging mode and a second charging mode, the overcharge amount of the battery charged by the charging program of the first charging mode is the first overcharge amount, the overcharge amount of the battery charged by the charging program of the second charging mode is the second overcharge amount, the value of the first overcharge amount is X, X is a positive number, the value of the second overcharge amount is Y, Y is a positive number, zero or negative number, and X>Y, if the current charging is performed with the charging program of the first charging mode, and the charging program of the first charging mode is not completed, the charger will continue to charge the battery with the charging program of the first charging mode the next time.

[0005] Furthermore, within a certain number of charging times, if the charging procedure of the first charging mode is completed, the next charging will continue with the charging mode.

[0006] Further, the charging mode of the charger is charging in a first charging mode, and a value of a first overcharge amount in the first charging mode is X, where X is a positive number.

[0007] A charging method for a charger for a storage battery, wherein the charging modes of the charger are to charge in a first charging mode and a second charging mode, the overcharge amount of the storage battery when the charging program of the first charging mode is executed and completed is the first overcharge amount, the overcharge amount of the storage battery when the charging program of the second charging mode is executed and completed is the second overcharge amount, the value of the first overcharge amount is X, X is a positive number, the value of the second overcharge amount is Y, Y is a positive number, zero or negative number, and X>Y, the current charging is performed in the charging program of the first charging mode, if the charging program of the first charging mode is executed and completed, then when charging is performed in the first charging mode again next time, the output power per unit time of the charger is lower than the output power per unit time of the current charging.

[0008] Furthermore, if the charging procedure of the first charging mode is not completed, the charger will execute the charging procedure of the first charging mode again at an output power per unit time higher than that of this charging for the next charging. After charging a certain number of times, if the charging procedure of the first charging mode is completed, the next charging will continue with its charging mode.

[0009] Furthermore, before the charging mode starts charging, charging is performed a certain number of times in the first charging mode. If the charging procedure of this charging is completed, charging is performed again in the first charging mode at an output power per unit time lower than that of this charging next time. Within a certain number of charging times, if the charging procedure of the first charging mode cannot be completed, the output power of the charger per unit time at this time is obtained, and the obtained output power is used as the basis for increasing the output power per unit time in the aforementioned claim 9.

[0010] Furthermore, the output power per unit time of this charging is the output power per unit time when the charger is turned on with maximum compensation power.

[0011] Furthermore, the output power per unit time of the charger when charging is equal to the sum of the charging power per unit time used to charge the battery and the compensation power output per unit time. The output power per unit time of the charger when charging is adjusted by adjusting the magnitude of the compensation power output per unit time of the charger.

[0012] Furthermore, the compensation power output per unit time is realized by supplying power to a load through a charger or increasing the charging voltage of a battery.

[0013] Furthermore, the charging procedure of the charging method includes a constant current charging stage, a constant voltage charging stage and a final supplementary charging stage, and the charger starts outputting compensation power in the late constant voltage charging stage or the early stage of the final supplementary charging stage.

[0014] Furthermore, the battery is a lead-acid battery.

[0015] The charging method of the present invention can reduce the energy consumption of the charger and ensure the service life of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A circuit diagram showing a first embodiment of outputting compensation power of the charger of the present invention;

[0017] Figure 2 An output power per unit time diagram showing a first embodiment of outputting compensation power of the charger of the present invention;

[0018] Figure 3 The output power per unit time diagram is shown when the charger of the present invention is not started to output compensation power;

[0019] Figure 4 An output power diagram per unit time showing a second embodiment of the charger outputting compensation power of the present invention;

[0020] Figure 5Another output power per unit time diagram of the second embodiment of the charger outputting compensation power of the present invention is shown;

[0021] Figure 6 A flow chart showing a first charging method of the charger of the present invention;

[0022] Figure 7 Another flow chart showing a first charging method of the charger of the present invention;

[0023] Figure 8 Another flow chart showing the second charging method of the charger of the present invention. DETAILED DESCRIPTION

[0024] The present invention is further described below in conjunction with specific embodiments.

[0025] The charging procedure executed by the charger for the battery of the present invention each time it is charged can be one of the following two modes. The first mode: the charger executes the charging procedure of the first charging mode each time it is charged; or the second mode: the charger selects to execute one of the charging procedures of the first charging mode and the second charging mode according to the required charging rule each time it is charged. The overcharge amount of the battery after the charging procedure of the first charging mode is executed is the first overcharge amount, and the overcharge amount of the battery after the charging procedure of the second charging mode is executed is the second overcharge amount. The value of the first overcharge amount is X, X is a positive number, and the value of the second overcharge amount is Y, Y is a positive number, zero or negative number, and X>Y. When Y is a negative number, the battery is not fully charged at this time. When the battery is charged to a full state, continuing to charge will reach overcharge. At this time, the overcharged electricity is not used to increase the battery electricity, but to eliminate the deposition of lead sulfate on the surface of the positive active material or to eliminate the thickness of the interface where the grid contacts the active material. That is, when the charging procedure of the first charging mode is completed, the battery will be overcharged, while when the charging procedure of the first charging mode is completed, the battery may not be fully charged, may be fully charged, or may be overcharged, but the second overcharge amount during overcharge is less than the first overcharge amount when the charging procedure of the first charging mode is completed. The charging mode of the present invention can be a charging mode that only charges in the first charging mode, or a charging mode that charges in the first charging mode and the second charging mode.

[0026] The first charging method of a charger for a battery of the present invention is that the charger charges the battery with the output power per unit time of this charging this time, and charges the battery with the output power per unit time of the next charging next time. If the charging program of this charging is completed, the output power per unit time of the next charging is lower than the output power per unit time of this charging; if the charging program of this charging is not completed, the output power per unit time of the next charging is higher than the output power per unit time of this charging. When the output power per unit time during charging is adjusted, the output power per unit time during charging is equal to the sum of the charging power per unit time used to charge the battery and the compensation power output per unit time. The adjustment of the output power per unit time during charging is achieved by adjusting the compensation power output per unit time. The compensation power output per unit time can be used to charge the battery or to generate heat for the charger as needed, or part of it can be used to charge the battery and part of it can be used to generate heat for the charger. Figure 6 A flowchart of the specific implementation is shown.

[0027] The present invention is used for the charging method of the charger of the storage battery. If the charging mode of the charger is to charge in the first charging mode, that is, each charging is to execute the charging program of the first charging mode. The charger charging method cyclically charges according to the charging mode, that is, each time the charging program of the first charging mode is executed; when the user charges on different charging piles, different charging piles have different powers to start the power-off program, and the delayed power supply time after starting the power-off program is different. According to whether the charging program of the first charging mode of this charging is completed, the output power per unit time of the next charging is adjusted. On the one hand, the unnecessary power loss of the charger can be reduced, and on the other hand, the feature of the charging pile can be used to realize the switching of the charger between the first charging mode and the second charging mode, so as to ensure the balance between the battery dehydration and the positive lead sulfate deposition, and ensure the battery life.

[0028] The present invention is used for the charging method of the charger of the storage battery. If the charging mode of the charger is to charge in the first charging mode and the second charging mode, that is, each charging is performed according to the required charging rule by selecting to execute one of the charging procedures of the first charging mode and the charging procedures of the second charging mode. The charger charging method cyclically charges according to the charging mode. When the user charges on different charging piles, the power of the different charging piles to start the power-off program is different, and the delayed power supply time after starting the power-off program is different. According to whether the charging program of this charging is completed, the output power per unit time of the next charging is adjusted. On the one hand, the unnecessary power loss of the charger can be reduced. On the other hand, since the charging program in the second charging mode determines the maximum overcharge amount in the second charging mode, that is, the charging program in the second charging mode is completely executed, it can be avoided that the overcharge amount of this charging is too large due to the long delayed power supply time after the charging pile starts the power-off program under the first charging method of the charger. Under this charging method, the overcharge amount in the second charging mode will not exceed the overcharge amount when the charging program of the second charging mode is completed. The size of the overcharge amount in the second charging mode can well control the balance between the interface and water loss.In addition, the charging method requires a charging rule that the number of times the charging program of the first charging mode is executed is less than the number of times the charging program of the second charging mode is executed. In addition, after executing the charging program of the second charging mode a certain number of times, the charging program of the first charging mode must be executed to complete, otherwise it will have an adverse effect on the battery life. Therefore, under this charging mode, when the number of consecutive charging times without completing the charging program of the first charging mode is too large and exceeds a certain number of times, in order to avoid affecting the battery life, it is necessary to forcibly execute the charging program of the first charging mode. At this time, the charger continues to charge in a special charging mode. That is, when the charging program of the first charging mode needs to be executed to complete this charging but the charging program of the first charging mode is not executed to complete, then the charging program of the first charging mode needs to be executed again during the next charging. If within a certain number of times, After the charging procedure of the first charging mode is completed, the charger will continue to charge in its charging mode for the next charging, and continue to execute the charging procedure of the subsequent charging mode. For example, the charging mode set by the charger is: charging once in the first charging mode + charging twice in the second charging mode. The charger charges in a cycle according to the charging mode each time. If the charging procedure of the first charging mode is executed and the charging procedure of the first charging mode is still not completed within a certain number of charging times, it means that the compensation power has reached the maximum value at this time and the charging procedure of the first charging mode cannot be completed. The next charging will also continue to charge in its charging mode to reduce the output power of the charger per unit time. It is best for the charger to resume charging in a charging method that stops outputting compensation power, thereby reducing unnecessary power waste of the charger. The charging procedure of the first charging mode is not completed, including executing the charging procedure of the second charging mode and executing the charging procedure of the first charging mode but the procedure is not completed. Figure 7 The flowchart of the specific implementation is shown. The next charge in the first charging method of the charger for a storage battery of the present invention preferably refers to the next charge.

[0029] The first charging method for a battery charger of the present invention increases the complexity of the charger program, affects the stability and service life of the charger, and further has an adverse effect on the use or life of the battery, because the charger needs to adjust its output power per unit time each time it charges according to whether the charging program has been completed during the last charging.

[0030] The second charging method of the charger for the battery of the present invention, the charging mode of the charger is charging in the first charging mode and charging in the second charging mode, that is, each charging is performed according to the required charging rule to select one of the charging procedures of the first charging mode and the charging procedures of the second charging mode to perform charging. The charger charging method cyclically charges according to the charging mode. The charger charges the battery in the first charging mode with the output power per unit time of this charging this time. If the charging procedure of the first charging mode is completed, when charging in the first charging mode next time, the output power per unit time of the charger is lower than the output power per unit time of this charging; if the charging procedure of the first charging mode is not completed, the charger will execute the charging procedure of the first charging mode again for a certain number of times with an output power higher than the output power per unit time of this charging next time. After charging for a certain number of times, if the charging procedure of the first charging mode is completed, the next charging will continue to charge with its charging mode; after charging for a certain number of times, if the charging procedure of the first charging mode is still not completed, the next charging will continue to charge with its charging mode. The number of times the charging procedure of the first charging mode is executed again can be set as needed. When the charger charges the battery in the second charging mode with the output power per unit time during this charging, the charger charges according to the output power per unit time that it can output, preferably, it charges with the output power per unit time when the charger does not start to output compensation power. In this charging method, when the charger is charging in the charging program of the second charging mode, the charger does not need to adjust the output power per unit time of this charging, and can perform the charging program of the second charging mode according to the set output power per unit time. In this method, since the output power per unit time of this charging is not adjusted during the charging in the second charging mode, the complexity of the charger program is reduced, the power loss of the charger is reduced, the stability and service life of the charger are guaranteed, and the technical effect of controlling water loss by charging in the second charging mode can also be guaranteed, thereby ensuring the life of the battery. In addition, under this charging method, the overcharge amount in the second charging mode will not exceed the overcharge amount when the charging program of the second charging mode is completed, and the size of the overcharge amount in the second charging mode can well control the balance between the interface and water loss. Figure 8 shown.

[0031] The second charging method of the charger for a storage battery of the present invention is that before the charger starts charging in its charging mode, preferably within a certain number of charging times when the charger initially starts charging, charging is performed in the first charging mode with the output power per unit time, preferably the maximum value of the output power per unit time, the maximum value of the output power per unit time being the output power of the charger per unit time when the maximum compensation power is turned on, and this charging is performed with the charging program of the first charging mode with the output power per unit time of this charging. If the charging program of the first charging mode is completed this time, the next charging is performed again with the first charging mode with the output power per unit time lower than that of this charging. If the charging program of the first charging mode cannot be completed within a certain number of charging times, the output power per unit time of the charger at this time is obtained, and the next charging enters the charging mode set by the charger for charging; if the charging program of the first charging mode can be completed within a certain number of charging times, the next charging also enters the charging mode set by the charger for charging. Enter the charging mode set by the charger to charge. When charging in the first charging mode and needing to increase the output power of the charger per unit time, the output power per unit time obtained is used as a benchmark, and the output power per unit time is increased, that is, charging is performed at a power greater than the output power per unit time obtained. In this way, when charging in the first charging mode is repeated, the charging procedure of the first charging mode can be completed as quickly as possible, avoiding the failure to complete the charging procedure of the first charging mode too many times, thereby affecting the life of the battery. If the charging procedure of the current charging is not completed, the next charging will enter the charging mode set by the charger for charging.

[0032] Within a certain number of charging times at the beginning of charging, charging in the first charging mode can be beneficial to the life of the battery that has been stored for too long. In addition, the maximum value of the output power per unit time is used as the first charging, and the output power per unit time of the charger is obtained when the charging program of charging in the first charging mode cannot be completed. The user's charging usage scenario can be obtained. After entering the charging mode set by the charger, the output power per unit time of the charger in the first charging mode continues to decrease. When the charging program of the first charging mode cannot be completed and the charging in the first charging mode is repeated, the charging program of the first charging mode can be completed as quickly as possible to avoid the failure to complete the charging program of the first charging mode too many times, thereby affecting the life of the battery.

[0033] In order to ensure the life of the battery, the charging method of the present invention requires a charging rule that preferably meets the following requirements: the number of charging times of the charging program of the first charging mode is less than the number of charging times of the charging program of the second charging mode; in addition, after executing the charging program of the second charging mode a certain number of times, the charging program of the first charging mode must be completed, otherwise it will have an adverse effect on the battery life.

[0034] In the charging method for a battery charger of the present invention, the adjustment range of the output power per unit time during charging can be set as needed, preferably matching the power difference of the charging pile on the market to start the power-off procedure.

[0035] The output power per unit time of the present invention is equal to the sum of the charging power per unit time used to charge the battery and the compensation power output per unit time. The adjustment of the output power per unit time during charging is achieved by adjusting the compensation power output per unit time. The charging power per unit time used by the charger to charge the battery is the charging power per unit time when the charger starts to output the compensation power. The range of the output power per unit time of the present invention is greater than or equal to the charging power per unit time when the charger starts to output the compensation power and less than or equal to the sum of the charging power per unit time used to charge the battery and the maximum compensation power output per unit time.

[0036] The output power per unit time during charging of the present invention can be adjusted in the following manner:

[0037] The charger of the present invention can adjust the output power per unit time by the following scheme: Figure 1 As shown, Scheme 1: The charger of the present invention includes a charging circuit 1, a load 3 connected in parallel with the charging circuit 1, and a battery 2 connected in parallel with the charging circuit 1. The battery 2 is controlled by a switch 4, and the load 3 is controlled by a switch 5. When the charging circuit 1 supplies power to the battery 2, the switch 4 is closed and the switch 5 is disconnected. When the charging circuit 1 supplies power to the load 3, the switch 5 is closed and the switch 4 is disconnected. That is, the adjustment of the output power per unit time of the charger during charging is achieved by the charging circuit 1 switching alternately between supplying power to the battery 2 and supplying power to the load 3, that is, the compensation power output per unit time is adjusted by supplying power to the load 3. In this way, on the one hand, the adjustment of the output power per unit time during charging is achieved, and at the same time, the charger performs pulse charging on the battery 2, thereby improving the effect of eliminating sulfide and the charging efficiency. When the charging circuit 1 supplies power to the battery 2, the charger outputs a power P1 per unit time for supplying power to the battery 2. When the charging circuit 1 supplies power to the load 3, the charger outputs a power P2 per unit time for supplying power to the load 3. P2 is greater than P1. At this time, the compensation power output per unit time of the charger is P2-P1， Right now Figure 2 and Figure 3 The difference in area between the load 3 and the load 3 can be used to adjust the output power P2 per unit time for powering the load 3 by adjusting the size of the load 3 resistor, thereby adjusting the compensation power output per unit time, and adjusting the output power per unit time during charging. At this time, the compensation power is used for heating the charger. By adjusting the size of the load 3 resistor, multiple loads with different resistance values ​​can be set, or the load resistance can be dynamically adjusted as needed. Figure 2 The output power per unit time diagram of scheme 1 is shown when the charger starts to output compensation power. Figure 3 The output power per unit time diagram is shown when the charger is not started to output compensation power. Solution 2: The output power per unit time of the charger is adjusted by increasing the charging voltage, that is, by outputting compensation power. Figure 4 As shown in FIG. 1 , it shows an output power per unit time diagram when the charger scheme 2 starts to output compensation power. Figure 5 As shown, it shows another output power per unit time diagram when the charger scheme 2 starts to output compensation power. That is, at this time, the charging voltage is increased at a certain interval to output compensation power. Compared with Figure 4 In this case, the output compensation power can also partially achieve the effect of pulse charging. At this time, the compensation power is used to charge the battery. Since the charging voltage is increased, it will cause the problem of battery water loss compared to scheme one, but it can avoid the problem of the compensation power not being able to start due to the insufficient compensation power of scheme one. By adjusting the amplitude of increasing the charging voltage, the compensation power output per unit time is adjusted, and the output power per unit time during charging can be adjusted. In order to better realize the start-up of the output compensation power, scheme two can be used in combination with scheme one. At this time, the output power per unit time P3 is greater than P 2， That is, the size of the output compensation power (P3-P1) started by increasing the charging voltage is greater than the size of the output compensation power (P2-P1) started by switching alternately between powering the battery and the load. When the charger starts the output compensation power, it first starts the output compensation power by switching alternately between powering the battery and the load through the charging circuit. If the charging cannot be continued at this time, the charger starts the output compensation power by increasing the charging voltage. In this way, the output compensation power can be started without increasing the voltage as much as possible, and the battery can be guaranteed to lose less water as much as possible. At the same time, the life of the charger and the service life of the battery can also be balanced. In addition, the compensation power can be divided into two parts, one part of the compensation power is achieved by starting to increase the charging voltage, and the other part of the compensation power is achieved by switching to the load. The output compensation power can also be achieved. At this time, one part of the compensation power is used for the charger to heat up and the other part is used to charge the battery.

[0038] The charging procedure of the first charging mode of the present invention may be: a constant current charging stage, a constant voltage charging stage, and a final supplementary charging stage. The charging procedure of the second charging mode may be: a constant current charging stage, a constant voltage charging stage, and a final supplementary charging stage. The battery is usually fully charged in the final supplementary charging stage, and the size of the first overcharge amount in the first charging mode and the size of the second overcharge amount in the second charging mode can be controlled by the length of time of the final supplementary charging stage.

[0039] The output power per unit time of the charger of the present invention changes as the charging procedure progresses. Usually, the output power per unit time of the charger is small in the late stage of the constant voltage charging stage and the final supplementary charging stage. Therefore, the charging pile starts the power-off procedure, usually in the late stage of the constant voltage charging stage or in the early stage of the final supplementary charging stage. It depends on the output power per unit time in the late stage of the constant voltage charging stage or the output power per unit time in the final supplementary charging stage.

[0040] When the charger does not start to output compensation power, the output power per unit time of the charger is the charging power per unit time used to charge the battery. When the charger starts to output compensation power, the output power per unit time of the charger is equal to the sum of the charging power per unit time used to charge the battery and the compensation power output per unit time. The compensation power output per unit time can be used for heating the charger or for charging the battery or both. The size of the compensation power output per unit time can be adjusted by the size of the load or the size of the increased charging voltage.

[0041] The time taken to complete the charging procedure in the first charging mode of the present invention is greater than the time taken to complete the charging procedure in the second charging mode.

[0042] Example 1

[0043] The charging mode of the charger is: each charging is performed in accordance with the charging procedure of the first charging mode.

[0044] The power-off powers of charging piles on the market are currently 50W, 40W, 30W, 20W, and 10W. The power-off power of the charging piles varies by 10W. When the output power of the charger per unit time is lower than the power-off power set by the charging pile, the charging pile starts the power-off procedure and the charging pile delays the power supply for a period of time before cutting off the power to the charger.

[0045] When the charger does not output compensation power, the charging power per unit time of the charger for charging the battery is 5W, and the output power per unit time of the charger is also 5W.

[0046] The power-off power of charging pile 1 is 10W, the power-off power of charging pile 2 is 20W, the power-off power of charging pile 3 is 30W, the power-off power of charging pile 4 is 40W, and the power-off power of charging pile 5 is 50W.

[0047] The user charges according to the charging mode of the charger in this embodiment.

[0048] Assume that the user usually charges at charging pile 2 and charging pile 4. When the charging pile starts the power-off procedure, the remaining execution time of the charging program in the first charging mode is 100 minutes, the remaining execution time of the charging program in the second charging mode is 15 minutes, the delayed power supply time when charging pile 2 is powered off is 5 minutes, and the delayed power supply time when charging pile 4 starts the power-off procedure is 25 minutes.

[0049] During this charging, the output power per unit time of the charger is 28W, of which the charging power is 5W, 5W is used to charge the battery, and the compensation power is 23W, 23W can also be used to charge the battery, and can also be used to generate heat for the charger.

[0050] The user charges the first time on charging pile 2. The first charging executes the charging procedure of the first charging mode. Since the output power per unit time is 28W, which is greater than the power-off power of charging pile 2 of 20W, charging pile 2 is not powered off, and the charging procedure of this charging can be completed. Then the output power per unit time of the next charging is reduced by one gear to 18W, of which the charging power is 5W, 5W is used to charge the battery, and the compensation power is 13W, 13W can also be used to charge the battery, and can also be used to generate heat for the charger. In this embodiment, the first gear is set to 10W to match the power-off power of different charging piles. This charging realizes charging the first overcharge amount X.

[0051] The user charges the battery on the charging pile 2 for the second time. The charging procedure of the first charging mode is still executed for the second charging. Since the output power per unit time is 18W, which is less than the power-off power of the charging pile 2 of 20W, the charging pile 2 starts the power-off procedure at this time. The charging pile 2 delays the power supply for a period of time and then cuts off the power to the charger. The delayed power supply time of the charging pile 2 is less than the remaining execution time of the charging procedure of charging in the first charging mode. The charging procedure of this charging cannot be completed. Then the output power per unit time of the next charging is increased by one gear to 28W, and the charging power is 5W. 5W is used to charge the battery. The compensation power is 23W, which can also be used to charge the battery or to generate heat for the charger. This charging realizes the charging of the second overcharge amount Y. The value of the second overcharge amount Y depends on the delayed power supply time of the charging pile 2. The delayed power supply time of the charging pile 2 is 5 minutes, and the battery is not fully charged, that is, Y is a negative number. If the delayed power supply time of the charging pile 2 is extended, Y is a positive number. At this time, the battery is also overcharged, but the second overcharge amount is less than the first overcharge amount. This charging realizes the charging of the second overcharge amount Y.

[0052] The user comes to the charging pile 4 for charging for the third time. The charging procedure of the first charging mode is still executed for the third time. Since the output power per unit time is 28W, which is less than the power-off power of the charging pile 4 of 40W, the charging pile 4 starts the power-off procedure at this time. The charging pile 4 delays the power supply for a period of time and then cuts off the power to the charger. The power supply time of the charging pile 4 is 25 minutes, which is less than the remaining execution time of the charging procedure of 100 minutes. The charging procedure of this charging cannot be completed. The output power per unit time of the next charging is increased by one gear to 38W, of which the charging power is 5W, 5W is used to charge the battery, and the compensation power is 33W, 33W can also be used to charge the battery, and can also be used to heat the charger. This charging realizes the charging of the second overcharge amount Y, and the value of the second overcharge amount Y depends on the delayed power supply time of the charging pile 4. The delayed power supply time of the charging pile 4 is 25 minutes, and Y is a positive number. At this time, the battery is overcharged, but the second overcharge amount is less than the first overcharge amount. If the delayed power supply time of the charging pile 4 is extended, the value of the second overcharge amount can be increased. This charging realizes the charging of the second overcharge amount Y.

[0053] The user comes to charging pile 4 for charging for the fourth time. The charging procedure of the first charging mode is still executed for the fourth charging. Since the output power per unit time is 38W, which is less than the power-off power of charging pile 4 of 40W, charging pile 4 starts the power-off procedure at this time. Charging pile 4 delays the power supply for a period of time and then cuts off the power to the charger. The power supply time of charging pile 4 is 25 minutes, which is less than the remaining execution time of the charging procedure of 100 minutes. The charging procedure of this charging cannot be completed. Then the output power per unit time of the next charging is increased by one gear to 48W, of which the charging power is 5W, 5W is used to charge the battery, and the compensation power is 43W, 43W can also be used to charge the battery, and can also be used to heat the charger. This charging realizes the charging of the second overcharge amount Y, and the value of the second overcharge amount Y depends on the delayed power supply time of charging pile 4. The delayed power supply time of charging pile 4 is 25 minutes, and Y is a positive number. At this time, the battery is overcharged, but the second overcharge amount is less than the first overcharge amount. If the delayed power supply time of charging pile 4 is extended, the value of the second overcharge amount can be increased. This charging realizes the charging of the second overcharge amount Y.

[0054] The user is charging on the charging pile 4 for the fifth time. The charging procedure of the first charging mode is still executed for the fifth time. Since the output power per unit time is 48W, which is greater than the power-off power of the charging pile 4 of 40W, the charging pile 4 is not disconnected, and the charging procedure of this charging can be completed. Then the output power per unit time of the next charging is reduced by one gear to 38W, of which the charging power is 5W, 5W is used to charge the battery, and the compensation power is 33W, 33W can also be used to charge the battery, and can also be used to generate heat for the charger. This charging realizes charging into the first overcharge amount X.

[0055] The user returns to charging pile 2 for the sixth time to charge. This sixth charge still executes the charging procedure of the first charging mode. Since the output power per unit time is 38W, which is greater than the power-off power of charging pile 2 of 20W, and charging pile 2 is not powered off, the charging procedure of this charge can be completed. Then the output power per unit time of the next charge is reduced by one gear to 28W, of which the charging power is 5W, and 5W is used to charge the battery. The compensation power is 23W, and 23W can also be used to charge the battery and to generate heat for the charger. Since the output power per unit time was reduced in the last charge, the charging procedure of this charge can still be completed, which can reduce unnecessary power waste. This charge achieves charging of the second overcharge amount Y.

[0056] The user comes to charging pile 4 for charging for the seventh time. This seventh charging still executes the charging procedure of the first charging mode. Since the output power per unit time is 28W, which is less than the power-off power of charging pile 4 of 40W, charging pile 4 starts the power-off procedure at this time. Charging pile 4 delays the power supply for a period of time before cutting off the power to the charger. Charging pile 4 delays the power supply for a period of time before cutting off the power to the charger. The delayed power supply time of charging pile 4 of 25 minutes is less than the remaining execution time of the charging procedure of 100 minutes. The charging procedure of this charging cannot be completed. Then the output power per unit time of the next charging is increased by one gear to 38W, of which the charging power is 5W, 5W is used to charge the battery, and the compensation power is 33W, 33W can also be used to charge the battery, and can also be used to generate heat for the charger. This charging realizes charging into the second overcharge amount Y.

[0057] In this embodiment, the output power per unit time of the next charge is adjusted according to whether the charging procedure of the current charge is completed, so that unnecessary power loss of the charger can be reduced. At the same time, the feature of the charging pile can also be used to control the charger to switch between the first charging mode and the second charging mode, so as to ensure the balance between battery water loss and positive electrode lead sulfate deposition, thereby ensuring the battery life.

[0058] Comparative Example 1

[0059] The charging mode of the charger is: each charging is performed in accordance with the charging procedure of the first charging mode.

[0060] The power-off powers of charging piles on the market are currently 50W, 40W, 30W, 20W, and 10W. The power-off power of the charging piles varies by 10W. When the output power of the charger per unit time is lower than the power-off power set by the charging pile, the charging pile starts the power-off procedure and the charging pile delays the power supply for a period of time before cutting off the power to the charger.

[0061] When the charger does not output compensation power, the charging power per unit time used by the charger to charge the battery is the same as the output power per unit time of the charger, both of which are 5W.

[0062] The power-off power of charging pile 1 is 10W, the power-off power of charging pile 2 is 20W, the power-off power of charging pile 3 is 30W, the power-off power of charging pile 4 is 40W, and the power-off power of charging pile 5 is 50W.

[0063] The user charges the battery according to the charging mode of the charger in this comparative example.

[0064] Assume that the user usually charges at charging pile 2 and charging pile 4. When the charging pile starts the power-off procedure, the remaining execution time of the charging program in the first charging mode is 100 minutes, the remaining execution time of the charging program in the second charging mode is 15 minutes, the delayed power supply time when charging pile 2 is powered off is 5 minutes, and the delayed power supply time when charging pile 4 starts the power-off procedure is 25 minutes.

[0065] This is the first time that the user charges on charging pile 2. The first charging executes the charging procedure of the first charging mode. Since the output power of the charger per unit time is 5W, which is less than the power-off power of charging pile 2 of 20W, charging pile 2 starts the power-off procedure at this time. Charging pile 2 delays the power supply for a period of time before cutting off the power to the charger. The delayed power supply time of charging pile 2 is less than the remaining execution time of the charging procedure, and the charging procedure of this charging cannot be completed. Charging pile 2 delays the power supply for 5 minutes, and the battery is not fully charged. This charging achieves the second overcharge amount Y.

[0066] The user charges at charging pile 2 again for the second time. The charging procedure of the first charging mode is still executed for the second charging. Since the output power of the charger per unit time is 5W, which is less than the power-off power of charging pile 2 of 20W, charging pile 2 starts the power-off procedure at this time. Charging pile 2 delays the power supply for a period of time before cutting off the power to the charger. The delayed power supply time of charging pile 2 is less than the remaining execution time of the charging procedure. The charging procedure of this charging cannot be completed. Charging pile 2 delays the power supply for 5 minutes, and the battery is not fully charged. This charging achieves the second overcharge amount Y.

[0067] The user charges at charging pile 4 for the third time. This third time, the charging procedure of the first charging mode is still executed. Since the output power of the charger per unit time is 5W, which is less than the power-off power of charging pile 4 of 40W, charging pile 4 starts the power-off procedure at this time. Charging pile 4 delays the power supply for a period of time before cutting off the power to the charger. The delayed power supply time of charging pile 4 is less than the remaining execution time of the charging procedure, and the charging procedure of this charging cannot be completed. Charging pile 4 delays the power supply for 25 minutes, and the battery is overcharged, but the second overcharge amount at this time is less than the first overcharge amount completed by the charging procedure. This charging realizes charging into the second overcharge amount Y.

[0068] The user charges at charging pile 4 for the fourth time. This fourth charge still executes the charging procedure of the first charging mode. Since the output power of the charger per unit time is 5W, which is less than the power-off power of charging pile 4 of 40W, charging pile 4 starts the power-off procedure at this time. Charging pile 4 delays the power supply for a period of time before cutting off the power to the charger. The delayed power supply time of charging pile 4 is less than the remaining execution time of the charging procedure, and the charging procedure of this charge cannot be completed. Charging pile 4 delays the power supply for 25 minutes, and the battery is overcharged, but the second overcharge amount at this time is less than the first overcharge amount completed by the charging procedure. This charge achieves the second overcharge amount Y.

[0069] In Comparative Example 1, since the output power of the charger per unit time is not increased, although the charger is required to execute the charging procedure of the first charging mode each time charging, the charging procedure of the first charging mode cannot be completed each time charging on the charging pile, thereby affecting the life of the battery.

[0070] Comparative Example 2

[0071] The charging mode of the charger is: each charging is performed in accordance with the charging procedure of the first charging mode.

[0072] The power-off powers of charging piles on the market are currently 50W, 40W, 30W, 20W, and 10W. The power-off power of the charging piles varies by 10W. When the output power of the charger per unit time is lower than the power-off power set by the charging pile, the charging pile starts the power-off procedure and the charging pile delays the power supply for a period of time before cutting off the power to the charger.

[0073] When the charger does not output compensation power, the charging power per unit time used by the charger to charge the battery is the same as the output power per unit time of the charger, both of which are 5W.

[0074] The user charges the battery according to the charging mode of the charger in this comparative example.

[0075] The power-off power of charging pile 1 is 10W, the power-off power of charging pile 2 is 20W, the power-off power of charging pile 3 is 30W, the power-off power of charging pile 4 is 40W, and the power-off power of charging pile 5 is 50W.

[0076] Assume that the user usually charges at charging pile 2 and charging pile 4. When the charging pile starts the power-off procedure, the remaining execution time of the charging program in the first charging mode is 100 minutes, the remaining execution time of the charging program in the second charging mode is 15 minutes, the delayed power supply time when charging pile 2 is powered off is 5 minutes, and the delayed power supply time when charging pile 4 starts the power-off procedure is 25 minutes.

[0077] This is the first time that the user charges on charging pile 2. The first charging executes the charging procedure of the first charging mode. Since the average output power of the last charging stage is 58W, which is greater than the power-off power of charging pile 2 of 20W, the charging procedure can be completed. The average output power of the last charging stage is 58W, of which the charging power is 5W, 5W is used to charge the battery, and the compensation power is 53W, which can also be used to charge the battery and to generate heat for the charger. This charging achieves the first overcharge amount X.

[0078] The user charges at charging pile 2 again for the second time. The charging procedure of the first charging mode is executed for the second charging. Since the average output power of the last charging stage is 58W, which is greater than the power-off power of charging pile 2 of 20W, the charging procedure of this charging can be completed. The average output power of the last charging stage is 58W, of which the charging power is 5W, 5W is used to charge the battery, and the compensation power is 53W, which can also be used to charge the battery and to generate heat for the charger. This charging realizes the first overcharge amount X.

[0079] The user charges at charging pile 4 for the third time. This third charging executes the charging procedure of the first charging mode. Since the average output power of the last charging stage is 58W, which is greater than the power-off power of charging pile 4 of 40W, the charging procedure of this charging can be completed. The average output power of the last charging stage is 58W, of which the charging power is 5W, 5W is used to charge the battery, and the compensation power is 53W, which can also be used to charge the battery and to generate heat for the charger. This charging realizes the first overcharge amount X.

[0080] In Comparative Example 2, since the output power of the charger per unit time is increased to a maximum of 58W, although the charging procedure of the first charging mode can be completed, 38W of the output power of the charger is wasted when charging on charging pile 2, and 18W of the output power of the charger is wasted when charging on charging pile 4. The wasted power increases the heat generation of the charger, reduces the life of the charger, and may also increase the water loss of the battery, thereby affecting the life of the battery. In addition, since the charger performs the charging procedure of the first charging mode every time it charges, it will itself have an adverse effect on the water loss of the battery. Comparative Example 2 further increases the output power of the charger per unit time to a maximum of 58W. If the increased power, that is, the output compensation power, is used to charge the battery, it will lead to further aggravation of the water loss of the battery, breaking the balance between different failure modes of the battery, greatly affecting the service life of the battery. If the increased compensation power is used to heat the charger, it will greatly affect the service life of the charger.

[0081] Example 2

[0082] In Example 1, this feature of the charging pile is utilized to control the charging program of the charger to switch between the first charging mode and the second charging mode, thereby achieving a balance between battery water loss and positive electrode lead sulfate deposition and ensuring battery life. However, the execution time of the charging program that has not been completed in Example 1 is completely dependent on the delayed power supply time of the charging pile, that is, the charging pile determines the amount of charge in this charging, which in turn affects the repair effect of the battery interface and is not conducive to the charger controlling the balance between different failure modes of the battery.

[0083] The charging mode of the charger in this embodiment is: each charging is performed by selecting one of the first charging mode and the second charging mode according to the required charging rules. For example, the charging mode is to charge the first charging mode once + the second charging mode 5 times, and then charge repeatedly in a cycle. The charging mode can also be to charge the first charging mode 2 times + the second charging mode 6 times, and then charge repeatedly in a cycle, and so on. The specific charging mode in this embodiment is: the first charging mode is charged once + the second charging mode is charged twice, and then the charging mode is repeatedly charged in a cycle.

[0084] The power-off powers of charging piles on the market are currently 50W, 40W, 30W, 20W, and 10W. The power-off power of the charging piles varies by 10W. When the output power of the charger per unit time is lower than the power-off power set by the charging pile, the charging pile starts the power-off procedure and the charging pile delays the power supply for a period of time before cutting off the power to the charger.

[0085] When the charger does not output compensation power, the charging power per unit time of the charger for charging the battery is 5W, and the output power per unit time of the charger is also 5W.

[0086] The user charges according to the charging mode of the charger in this embodiment.

[0087] The power-off power of charging pile 1 is 10W, the power-off power of charging pile 2 is 20W, the power-off power of charging pile 3 is 30W, the power-off power of charging pile 4 is 40W, and the power-off power of charging pile 5 is 50W.

[0088] Assume that the user usually charges at charging pile 2 and charging pile 4. When the charging pile starts the power-off procedure, the remaining execution time of the charging program in the first charging mode is 100 minutes, the remaining execution time of the charging program in the second charging mode is 15 minutes, the delayed power supply time when charging pile 2 is powered off is 5 minutes, and the delayed power supply time when charging pile 4 starts the power-off procedure is 25 minutes.

[0089] During this charging, the output power per unit time of the charger is 28W, of which the charging power is 5W, 5W is used to charge the battery, and the compensation power is 23W, which can also be used to charge the battery and to generate heat for the charger.

[0090] This is the first time that the user charges on charging pile 2. The first charging executes the charging procedure of the first charging mode. Since the output power of the charger per unit time is 28W, which is greater than the power-off power of charging pile 2 of 20W, the charging procedure of this charging can be completed. Then the output power of the charger per unit time for the next charging is reduced by one gear to 18W, of which the charging power is 5W, 5W is used to charge the battery, and the compensation power is 13W, 13W can also be used to charge the battery, and can also be used to generate heat for the charger. The first gear is 10W, which matches the power-off power of different charging piles. This charging realizes the first overcharge amount X. It meets the requirements of this charging method.

[0091] The user charges on charging pile 2 for the second time. The second charging executes the charging procedure of the second charging mode. Since the output power of the charger per unit time of 18W is less than the power-off power of charging pile 2 of 20W, charging pile 2 starts the power-off procedure at this time. Charging pile 2 delays the power supply for a period of time and then cuts off the power to the charger. The power supply time of charging pile 2 is 5 minutes, which is less than the remaining execution time of the charging procedure of the second charging mode of 15 minutes. The charging procedure of this charging is not completed. Then the output power of the charger per unit time of the next charging is increased by one gear to 28W, of which the charging power is 5W, 5W is used to charge the battery, and the compensation power is 23W, 23W can also be used to charge the battery, and can also be used to generate heat for the charger. This charging realizes the charging of the second overcharge amount Y. It meets the requirements of this charging method.

[0092] This is the third time that the user comes to the charging pile 4 to charge. The third time of charging executes the charging procedure of the second charging mode. Since the output power of the charger per unit time is 28W (according to the adjustment setting after the charging procedure of the previous second charging is not completed), which is less than the power-off power of the charging pile 4 of 40W, the charging pile 4 starts the power-off procedure at this time. The charging pile 4 delays the power supply for a period of time and then cuts off the power to the charger. The delayed power supply time of the charging pile 4 is 25 minutes, which is greater than the remaining execution time of the charging procedure of the second charging mode of 15 minutes. The charging procedure of this charging is completed. The output power of the charger per unit time of the next charging is reduced by one gear to 18W, of which the charging power is 5W, 5W is used to charge the battery, and the compensation power is 13W, 13W can also be used to charge the battery, and can also be used to generate heat for the charger. This charging realizes the charging of the second overcharge amount Y. It meets the requirements of this charging method.

[0093] The user comes to the charging pile 4 to charge for the fourth time, that is, the charging mode starts the next cycle, that is, a charging cycle of 1 large overcharge + 2 small overcharges. The charging procedure of the first charging mode is executed for the fourth charging. Since the output power of the charger per unit time is 18W, which is less than the power-off power of the charging pile 4 of 40W, the charging pile 4 starts the power-off procedure at this time, and the charging pile 4 delays the power supply for a period of time to cut off the power of the charger. The power supply time of the charging pile 4 is 25 minutes, which is less than the remaining execution time of the charging procedure of the first charging mode of 100 minutes. The charging procedure of this charging is not completed. The average output power of the last charging stage of the next charging is increased by one gear to 28W, of which the charging power is 5W, 5W is used to charge the battery, and the compensation power is 23W, 23W can also be used to charge the battery, and can also be used to heat the charger. And the charging procedure of this charging, that is, the charging procedure of the first charging mode, is repeated for the next charging until the charging procedure of the first charging mode of the charger is completed or the output power of the charger per unit time of the charger reaches the maximum value. This charging realizes charging into the second overcharge amount Y. It does not meet the requirements of this charging method.

[0094] The user is charging on the charging pile 4 for the fifth time. The charging procedure of the first charging mode is repeated for the fifth time. Since the output power of the charger per unit time is 28W, which is less than the power-off power of the charging pile 4 of 40W, the charging pile 4 starts the power-off procedure at this time. The charging pile 4 delays the power supply for a period of time and then cuts off the power to the charger. The delayed power supply time of the charging pile 4 of 25 minutes is less than the remaining execution time of the charging procedure of the first charging mode of 100 minutes. The charging procedure of this charging is still not completed. The output power of the charger per unit time for the next charging is increased by one gear to 38W, of which the charging power is 5W, 5W is used to charge the battery, and the compensation power is 33W, 33W can also be used to charge the battery, and can also be used to heat the charger. This charging realizes the charging of the second overcharge amount Y. It does not meet the requirements of this charging method.

[0095] The user returns to charging pile 2 for the sixth time. The charging procedure of the first charging mode is repeated for the sixth time. Since the output power of the charger per unit time is 38W, which is greater than the power-off power of charging pile 2 of 20W, the charging procedure of this charging can be completed. Then the average output power of the last charging stage of the next charging is reduced by one gear to 28W, of which the charging power is 5W, 5W is used to charge the battery, and the compensation power is 23W, which can also be used to charge the battery and to generate heat for the charger. This charging realizes the charging of the first overcharge amount X. It meets the requirements of this charging method.

[0096] The user comes to charging pile 4 for charging for the seventh time. This seventh time, the charging procedure of the second charging mode is continued according to the original charging mode. Since the output power of the charger per unit time is 28W, which is less than the power-off power of charging pile 4 of 40W, charging pile 4 starts the power-off procedure at this time. Charging pile 4 delays the power supply for a period of time and then cuts off the power to the charger. The delayed power supply time of charging pile 4 is 25 minutes, which is greater than the remaining execution time of the charging procedure of the second charging mode of 5 minutes. The charging procedure of this charging is completed, and the average output power of the last charging stage of the next charging is reduced by one gear to 18W, of which the charging power is 5W, 5W is used to charge the battery, and the compensation power is 13W, 13W can also be used to charge the battery, and can also be used to heat the charger. This charging realizes the charging of the second overcharge amount Y. It meets the requirements of this charging method.

[0097] The user comes to charging pile 4 for the eighth time to charge. This eighth time, the charging procedure of the second charging mode is continued according to the original charging mode. Since the output power of the charger per unit time is 18W, which is less than the power-off power of charging pile 4 of 40W, charging pile 4 starts the power-off procedure at this time. Charging pile 4 delays the power supply for a period of time and then cuts off the power to the charger. The delayed power supply time of charging pile 4 is 25 minutes, which is greater than the remaining execution time of the charging procedure of the second charging mode of 5 minutes. The charging procedure of this charging is completed, and the average output power of the last charging stage of the next charging is reduced by one gear to 8W, of which the charging power is 5W, 5W is used to charge the battery, and the compensation power is 3W, 3W can also be used to charge the battery, and can also be used to heat the charger. This charging realizes the charging of the second overcharge amount Y. It meets the requirements of this charging method.

[0098] The user comes to charging pile 4 for charging for the ninth time, and the charging mode starts the next cycle, that is, a charging cycle of one large overcharge + two small overcharges. This ninth charging executes the charging procedure of the first charging mode to continue to complete the subsequent charging.

[0099] In Example 2, regardless of the length of the delayed power supply time after the charging pile starts the power-off procedure, the overcharge amount in the second charging mode will not exceed the overcharge amount when the charging procedure of the second charging mode is completed, effectively controlling the balance between water loss and interface repair. In addition, it is not avoided that the number of charging times between the last two completions of the charging procedure of the first charging mode is too many, which affects the life of the battery. In the case where the charging procedure of the first charging mode needs to be completed in this charging but is not completed, the charging procedure of the first charging mode needs to be continued during the next charging, and the output power of the charger per unit time is continuously increased. If the charging procedure of the first charging mode can be completed within a certain number of times, the subsequent charging continues to charge according to its charging mode, which is the charging procedure of the second charging mode in this embodiment; if the charging procedure of the first charging mode still cannot be completed within a certain number of times, similarly, the subsequent charging continues to charge according to its charging mode, reducing the output power of the charger per unit time. It is best to charge in a charging manner that stops outputting compensation power to avoid the charger working under the condition of excessive output power, wasting charger power or causing battery water loss.

[0100] In the charging method of the present invention, when the output power per unit time during charging is adjusted, the output power per unit time during charging is equal to the sum of the charging power per unit time used to charge the storage battery and the compensation power output per unit time, and the magnitude of the output power per unit time during charging is adjusted by adjusting the magnitude of the compensation power output per unit time. The compensation power output per unit time can be used to charge the storage battery or to generate heat for the charger as required, or part of it can be used to charge the storage battery and part of it can be used to generate heat for the charger.

[0101] Example 3

[0102] The charging mode of the charger in this embodiment is: each charging is performed by selecting one of the first charging mode and the second charging mode according to the required charging rules. For example, the charging mode is to charge the first charging mode once + the second charging mode 5 times, and then charge repeatedly in a cycle. The charging mode can also be to charge the first charging mode 2 times + the second charging mode 6 times, and then charge repeatedly in a cycle, and so on. The specific charging mode in this embodiment is: charging the first charging mode once + charging the second charging mode twice, and the charging method is to charge repeatedly in this charging mode.

[0103] The power-off powers of charging piles on the market are currently 50W, 40W, 30W, 20W, and 10W. The power-off power of the charging piles varies by 10W. When the output power of the charger per unit time is lower than the power-off power set by the charging pile, the charging pile starts the power-off procedure and the charging pile delays the power supply for a period of time before cutting off the power to the charger.

[0104] When the charger does not output compensation power, the charging power per unit time used by the charger to charge the battery is the same as the output power per unit time of the charger, both of which are 5W.

[0105] The power-off power of charging pile 1 is 10W, the power-off power of charging pile 2 is 20W, the power-off power of charging pile 3 is 30W, the power-off power of charging pile 4 is 40W, and the power-off power of charging pile 5 is 50W.

[0106] When the charger is turned on with maximum compensation power, the charger's output power per unit time is a maximum of 58W.

[0107] Assume that the user usually charges at charging pile 2 and charging pile 4. When the charging pile starts the power-off procedure, the remaining execution time of the charging program in the first charging mode is 100 minutes, the remaining execution time of the charging program in the second charging mode is 15 minutes, the delayed power supply time when charging pile 2 is powered off is 5 minutes, and the delayed power supply time when charging pile 4 starts the power-off procedure is 25 minutes.

[0108] During this charging, the output power per unit time of the charger is 28W, of which the charging power is 5W, 5W is used to charge the battery, and the compensation power is 23W, which can also be used to charge the battery and to generate heat for the charger.

[0109] The user charges according to the charging mode of the charger in this embodiment.

[0110] The user charges on charging pile 2 this time. The first charging method executes the charging program of the first charging mode. Since the output power of the charger per unit time is 28W, which is greater than the power-off power of charging pile 2 of 20W, charging pile 2 is not powered off, and the charging program of this charging can be completed. Then, when charging in the first charging mode next time, the output power per unit time is lower than the output power per unit time of this charging. In this embodiment, it is reduced by one gear to 18W, of which the charging power is 5W, 5W is used to charge the battery, and the compensation power is 13W, 13W can also be used to charge the battery, and can also be used to generate heat for the charger.

[0111] The user charges the battery on charging pile 2 for the second time. The second charging method executes the charging program of the second charging mode. At this time, the output power of the charger per unit time can be any output power set by the charger. Regardless of whether the charging program of this charging can be completed, the requirements of the charging program of the second charging mode can be met. In this embodiment, the output power of the charger per unit time is 5W.

[0112] The user comes to charging pile 4 for charging for the third time. The third charging method executes the charging program of the second charging mode. Similarly, the output power of the charger per unit time can be any output power set by the charger. Regardless of whether the charging program of this charging can be executed, the requirements of the charging program of the second charging mode can be met. In this embodiment, the output power of the charger per unit time is 5W.

[0113] The user still charges on the charging pile 4 for the fourth time. The charging method for the fourth time executes the charging program of the first charging mode. Since the charger charges with an output power of 18W per unit time, 18W is less than the power-off power of 40W of the charging pile 4. At this time, the charging pile 4 starts the power-off program, and the charging pile 4 delays the power supply for a period of time before cutting off the power to the charger. Similarly, the delayed power supply time of the charging pile 4 is less than the remaining execution time of the charging program, and the charging program of this charging cannot be completed. In this embodiment, since the setting of the charging number of repeated executions of the charging program of the first charging mode is 4 times, the current charging number of repeated executions of the charging program of the first charging mode is 0 times, which has not reached 4 times. Then, the next time charging, the charging program of the first charging mode will continue to be executed, and the output power of the charger per unit time will be increased by one gear to 28W, of which the charging power is 5W, 5W is used to charge the battery, and the compensation power is 23W, 23W can also be used to charge the battery, and can also be used to generate heat for the charger.

[0114] The user is still charging on charging pile 4 for the fifth time. Since the charging program of the first charging mode failed to be completed for the fourth time, the fifth charging method continues to execute the charging program of the first charging mode. Since the output power of the charger per unit time is 28W, which is less than the power-off power of charging pile 4 of 40W, similarly, the delayed power supply time of charging pile 4 is less than the remaining execution time of the charging program, the charging program of this charging cannot be completed. In this embodiment, since the setting of the charging number of repeated executions of the charging program of the first charging mode is 4 times, the current charging number of repeated executions of the charging program of the first charging mode is 1 time, which has not reached 4 times, then the charging program of the first charging mode will continue to be executed for the next charging, and the output power of the charger per unit time is increased by one gear to 38W, of which the charging power is 5W, 5W is used to charge the battery, and the compensation power is 33W, 33W can also be used to charge the battery, and can also be used to generate heat for the charger.

[0115] The user charges on charging pile 2 for the sixth time. Since the charging program of the first charging mode failed to be completed the fifth time, the charging program of the first charging mode is continued for the sixth time. Since the output power of the charger per unit time is 38W, which is greater than the power-off power of charging pile 2 of 20W, the charging program of this charging can be completed. Then, the user continues to charge in its charging mode the next time, that is, the charging program of the second charging mode is executed.

[0116] The user charges on charging pile 2 for the seventh time and continues charging in its charging mode. The seventh charging method executes the charging program of the second charging mode. At this time, the output power of the charger per unit time can be any output power set by the charger. Regardless of whether the charging program of this charging can be executed, the requirements of the charging program of the second charging mode can be met. In this embodiment, the output power of the charger per unit time is 5W.

[0117] Before the charging mode of the charger in this embodiment 3 is executed, the following charging is also executed:

[0118] The charging procedure of the first charging mode is set 4 times. This time, charging is performed on charging pile 2. The output power of the charger per unit time is 58W. Since the output power of the charger per unit time is 58W, which is greater than the power-off power of charging pile 2 of 20W, and charging pile 2 is not powered off, the charging procedure of this charging can be completed. Then, when charging in the first charging mode next time, the output power per unit time is lower than the output power per unit time of this charging. In this embodiment, the power is reduced by one gear to 48W, where the charging power is 5W, and 5W is used to charge the battery. The compensation power is 43W, and 43W can also be used to charge the battery or to generate heat for the charger.

[0119] The user charges on charging pile 2 for the second time. The second charging method executes the charging program of the first charging mode. Since the output power of the charger per unit time is 48W, which is greater than the power-off power of charging pile 2 of 20W, charging pile 2 is not powered off, and the charging program of this charging can be completed. Then, when charging in the first charging mode next time, the output power per unit time is lower than the output power per unit time of this charging. In this embodiment, it is reduced by one gear to 38W, of which the charging power is 5W, 5W is used to charge the battery, and the compensation power is 33W, 33W can also be used to charge the battery, and can also be used to generate heat for the charger.

[0120] The user comes to charging pile 4 for charging for the third time. The third charging method executes the charging procedure of the first charging mode. Since the output power of the charger per unit time is 38W, which is less than the power-off power of charging pile 4 of 40W, charging pile 4 is powered off, and the charging procedure of this charging cannot be completed. The output power of the charger per unit time at this time is 38W. The next time the user charges, the charging mode of the charger is entered for charging. The charging procedure of the first charging mode is actually executed continuously for 3 times. If necessary, the charging procedure of the first charging mode can also be completed for the fourth time, and then the charging mode of the charger is entered for charging.

[0121] In this embodiment, before the charging mode of the charger is executed, after the above-mentioned continuous execution of the charging in the first charging mode is added, the charging mode of the charger in the above-mentioned embodiment can be adjusted to: the user is still charging on the charging pile 4 for the fifth time. Since the charging program of the first charging mode was not completed for the fourth time, the fifth charging method continues to execute the charging program of the first charging mode. At this time, the charger directly increases the output power of the charger per unit time for the fifth charging to 48W based on the output power of 38W per unit time of the charger. In this way, the user can complete the charging program of the first charging mode for the fifth time.

[0122] Example 4

[0123] The charging mode of the charger in this embodiment is: each charging is performed by selecting one of the first charging mode and the second charging mode according to the required charging rule. For example, the charging mode is to charge the first charging mode once + the second charging mode 5 times, and then charge repeatedly in a cycle. The charging mode can also be to charge the first charging mode 2 times + the second charging mode 6 times, and then charge repeatedly in a cycle, and so on. The specific charging mode in this embodiment is: charging the first charging mode once + charging the second charging mode twice, and the charging method is a charging method of repeatedly charging in this charging mode.

[0124] The power-off powers of charging piles on the market are currently 50W, 40W, 30W, 20W, and 10W. The power-off power of the charging piles varies by 10W. When the output power of the charger per unit time is lower than the power-off power set by the charging pile, the charging pile starts the power-off procedure and the charging pile delays the power supply for a period of time before cutting off the power to the charger.

[0125] When the charger does not output compensation power, the charging power per unit time of the charger to the battery is the same as the output power per unit time of the charger, both of which are 5 W. When the charger turns on the maximum compensation power, the output power per unit time of the charger is the maximum value of 58 W.

[0126] The power-off power of charging pile 1 is 10W, the power-off power of charging pile 2 is 20W, the power-off power of charging pile 3 is 30W, the power-off power of charging pile 4 is 40W, the power-off power of charging pile 5 is 50W, and the power-off power of charging pile 6 is 60W.

[0127] When the charging pile starts the power-off program, the remaining execution time of the charging program in the first charging mode is 100 minutes, the remaining execution time of the charging program in the second charging mode is 15 minutes, the delayed power supply time when charging pile 2 is powered off is 5 minutes, and the delayed power supply time when charging pile 4 starts the power-off program is 25 minutes.

[0128] During this charging, the output power per unit time of the charger is 28W, of which the charging power is 5W, 5W is used to charge the battery, and the compensation power is 23W, which can also be used to charge the battery and to generate heat for the charger.

[0129] The user charges according to the charging mode of the charger in this embodiment.

[0130] The user charges on charging pile 2 this time. The first charging method executes the charging program of the first charging mode. Since the output power of the charger per unit time is 28W, which is greater than the power-off power of charging pile 2 of 20W, charging pile 2 is not powered off, and the charging program of this charging can be completed. Then, when charging in the first charging mode next time, the output power per unit time is lower than the output power per unit time of this charging. In this embodiment, it is reduced by one gear to 18W, of which the charging power is 5W, 5W is used to charge the battery, and the compensation power is 13W, 13W can also be used to charge the battery, and can also be used to generate heat for the charger.

[0131] The user charges the battery on charging pile 2 for the second time. The second charging method executes the charging program of the second charging mode. At this time, the output power of the charger per unit time can be any output power set by the charger. Regardless of whether the charging program of this charging can be completed, the requirements of the charging program of the second charging mode can be met.

[0132] The user comes to charging pile 4 for charging for the third time. The third charging method executes the charging program of the second charging mode. Similarly, the output power of the charger per unit time can be any output power set by the charger. Regardless of whether the charging program of this charging can be executed, the requirements of the charging program of the second charging mode can be met.

[0133] The user still charges on the charging pile 4 for the fourth time. The charging method for the fourth time executes the charging program of the first charging mode. Since the charger charges with an output power of 18W per unit time, 18W is less than the power-off power of 40W of the charging pile 4. At this time, the charging pile 4 starts the power-off program, and the charging pile 4 delays the power supply for a period of time before cutting off the power to the charger. Similarly, the delayed power supply time of the charging pile 4 is less than the remaining execution time of the charging program, and the charging program of this charging cannot be completed. In this embodiment, since the setting of the charging number of repeated executions of the charging program of the first charging mode is 4 times, the current charging number of repeated executions of the charging program of the first charging mode is 0 times, which has not reached 4 times. Then, the next time charging, the charging program of the first charging mode will continue to be executed, and the output power of the charger per unit time will be increased by one gear to 28W, of which the charging power is 5W, 5W is used to charge the battery, and the compensation power is 23W, 23W can also be used to charge the battery, and can also be used to generate heat for the charger.

[0134] The user is still charging on charging pile 4 for the fifth time. Since the charging program of the first charging mode failed to be completed for the fourth time, the fifth charging method continues to execute the charging program of the first charging mode. Since the output power of the charger per unit time is 28W, which is less than the power-off power of charging pile 4 of 40W, similarly, the delayed power supply time of charging pile 4 is less than the remaining execution time of the charging program, the charging program of this charging cannot be completed. In this embodiment, since the setting of the charging number of repeated executions of the charging program of the first charging mode is 4 times, the current charging number of repeated executions of the charging program of the first charging mode is 1 time, which has not reached 4 times, then the charging program of the first charging mode will continue to be executed for the next charging, and the output power of the charger per unit time is increased by one gear to 38W, of which the charging power is 5W, 5W is used to charge the battery, and the compensation power is 33W, 33W can also be used to charge the battery, and can also be used to generate heat for the charger.

[0135] The user charges on charging pile 4 for the sixth time. Since the charging program of the first charging mode failed to be completed for the fifth time, the charging method of the sixth charging mode continues to execute the charging program of the first charging mode. Since the output power of the charger per unit time is 38W, which is less than the power-off power of charging pile 2 40W, the charging program of this charging cannot be completed. In this embodiment, since the setting of repeating the charging program of the first charging mode is 4 times, the current number of repeated charging programs of the first charging mode is 2 times, which has not reached 4 times. Then, the charging program of the first charging mode will continue to be executed for the next charging, and the output power of the charger per unit time is increased by one gear to 48W, of which the charging power is 5W, 5W is used to charge the battery, and the compensation power is 43W, 43W can also be used to charge the battery, and can also be used to generate heat for the charger.

[0136] The user charges on charging pile 5 for the seventh time. Since the charging program of the first charging mode failed to be completed for the sixth time, the charging method for the seventh time continues to execute the charging program of the first charging mode. Since the output power of the charger per unit time is 48W, which is less than the power-off power of charging pile 2 of 50W, the charging program of this charging cannot be completed. In this embodiment, since the setting of repeating the charging program of the first charging mode is 4 times, the number of repeated charging programs of the first charging mode is 3 times, which has not reached 4 times. Then, the charging program of the first charging mode will continue to be executed for the next charging, and the output power of the charger per unit time is increased by one gear to 58W, wherein the charging power is 5W, 5W is used to charge the battery, and the compensation power is 53W, 53W can also be used to charge the battery, and can also be used to generate heat for the charger.

[0137] The user charges on the charging pile 6 for the eighth time. Since the charging program of the first charging mode failed to be completed for the seventh time, the charging method of the eighth time continues to execute the charging program of the first charging mode. Since the output power of the charger per unit time is 58W, which is less than the power-off power of the charging pile 6 of 60W, the charging program of this charging cannot be completed. In this embodiment, since the setting of repeating the charging program of the first charging mode is 4 times, the current number of repeated charging programs of the first charging mode is 4 times. After 4 times, the charging program of the first charging mode still fails to be completed. The next charging continues with its charging mode. The next charging is charged with the charging program of the second charging mode.

[0138] The charging method of the charger of the present invention is a charging method in which the output power of the charger, especially the output power in the final charging stage, will cause the charging pile to be powered off. The battery of the present invention can be any battery suitable for the charging method of the present invention, especially a lead-acid battery.

[0139] The above-described embodiment is only a preferred solution of the present invention and does not limit the present invention in any form. There are other variations and modifications without exceeding the technical solution described in the claims.

Claims

1. A charging method for a battery charger, characterized in that: The charging mode of the charger is charging in a first charging mode, a value of a first overcharge amount of the first charging mode is X, X is a positive number, and each charging of the charger executes a charging procedure of the first charging mode. The charger charges the battery with the output power per unit time of this charging this time, and the charger charges the battery with the output power per unit time of the next charging next time. If the charging procedure of this charging is completed, the output power per unit time of the next charging is lower than the output power per unit time of this charging; if the charging procedure of the first charging mode of this charging is not completed, the output power per unit time of the next charging is higher than the output power per unit time of this charging.

2. A charging method for a battery charger, characterized in that: The charging mode of the charger is to charge in a first charging mode and a second charging mode. The overcharge amount of the battery charged by the charging program of the first charging mode is the first overcharge amount, and the overcharge amount of the battery charged by the charging program of the second charging mode is the second overcharge amount. The value of the first overcharge amount is X, X is a positive number, and the value of the second overcharge amount is Y, Y is a positive number, zero or a negative number, and X>Y. Each time the charger charges, it selects to execute one of the charging programs of the first charging mode and the second charging mode according to the required charging rule. After executing the charging program of the second charging mode a certain number of times, the charging program of the first charging mode must be executed. The charger charges the battery with the output power per unit time of this charging this time, and the charger charges the battery with the output power per unit time of the next charging next time. If the charging program of this charging is executed, the output power per unit time of the next charging is lower than the output power per unit time of this charging; if the charging program of this charging is not executed, the output power per unit time of the next charging is higher than the output power per unit time of this charging.

3. A charging method for a battery charger as claimed in claim 2, characterized in that: If the current charging is performed with the charging procedure of the first charging mode, and the charging procedure of the first charging mode has not been completed, the charger will continue to charge the battery with the charging procedure of the first charging mode the next time. If the charging procedure of the first charging mode is completed within a certain number of charging times, the next time the charging will continue with its charging mode; if the charging procedure of the first charging mode is still not completed within a certain number of charging times, the next time the charging will also continue with its charging mode.

4. A charging method for a battery charger as claimed in claim 3, characterized in that: If the charging procedure of the first charging mode is still not completed within a certain number of charging times, the next charging will continue with the same charging mode and reduce the output power of the charger per unit time.

5. A charging method for a battery charger, characterized in that: The charging mode of the charger is to charge in a first charging mode and a second charging mode. The overcharge amount of the battery charged by the charging program of the first charging mode is the first overcharge amount, and the overcharge amount of the battery charged by the charging program of the second charging mode is the second overcharge amount. The value of the first overcharge amount is X, X is a positive number, and the value of the second overcharge amount is Y, Y is a positive number, zero or negative number, and X>Y. Each time charging is performed according to the required charging rule, one of the charging programs of the first charging mode and the second charging mode is selected to perform charging. The charger charges the battery in the first charging mode with the output power per unit time during this charging. If the charging procedure of the first charging mode is completed, the output power per unit time of the charger next time is lower than the output power per unit time of this charging when charging in the first charging mode is used next time; if the charging procedure of the first charging mode is not completed, the charger will execute the charging procedure of the first charging mode again for a certain number of times at a higher output power per unit time than this charging when charging in the first charging mode is used next time. After charging for a certain number of times, if the charging procedure of the first charging mode is completed, the charging will continue with the charging mode next time. After charging for a certain number of times, if the charging procedure of the first charging mode is still not completed, the charging will continue with the charging mode next time. When the charger is charging in the charging procedure of the second charging mode, the charger does not need to adjust the output power per unit time of this charging, and the charging procedure of the second charging mode is charged according to the set output power per unit time.

6. A charging method for a battery charger as claimed in claim 5, characterized in that: Before the charger starts charging in its charging mode, charging is performed in the first charging mode. This charging is performed with the charging program of the first charging mode at the output power per unit time of this charging. If the charging program of the first charging mode is completed, the next charging is performed again in the first charging mode at an output power lower than the output power per unit time of this charging. If the charging program of the first charging mode cannot be completed within a certain number of charging times, the next charging will enter the charging mode set by the charger for charging; if the charging program of the first charging mode can be completed within a certain number of charging times, the next charging will also enter the charging mode set by the charger for charging.

7. A charging method for a battery charger as claimed in claim 6, characterized in that: Before the charger starts charging in its charging mode, charging is performed in the first charging mode with the maximum value of the output power per unit time. Within a certain number of charging times, if the charging program of charging in the first charging mode cannot be completed, the output power of the charger per unit time at this time is obtained, and the next charging is performed in the charging mode set by the charger.

8. A charging method for a battery charger according to any one of claims 2 to 7, characterized in that: The number of times of charging performed in the charging procedure of the first charging mode is less than the number of times of charging performed in the charging procedure of the second charging mode.

9. A charging method for a battery charger according to any one of claims 2 to 7, characterized in that: The charging procedure of the first charging mode is: constant current charging stage, constant voltage charging stage and final supplementary charging stage; the charging procedure of the second charging mode is: constant current charging stage, constant voltage charging stage and final supplementary charging stage; the size of the first overcharge amount of the first charging mode and the size of the second overcharge amount of the second charging mode are controlled by the length of time of the final supplementary charging stage.

10. A charging method for a battery charger according to any one of claims 2 to 7, characterized in that: The charging procedure of the first charging mode is: constant current charging stage, constant voltage charging stage and the final supplementary charging stage; the charging procedure of the second charging mode is: constant current charging stage, constant voltage charging stage and the final supplementary charging stage; the output power per unit time is the output power per unit time in the later stage of the constant voltage charging stage or the output power per unit time in the final supplementary charging stage.

11. A charging method for a battery charger according to any one of claims 1 to 7, characterized in that: The battery is a lead-acid battery.

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