Charging control method and electronic equipment

Abstract

The invention provides a charging control method and electronic equipment, and the method comprises the steps: determining that a battery meets a first target condition, and starting a first charging unit based on a first strategy until the first charging unit meets a first target state; starting the second charging unit based on a second strategy until the second charging unit meets a second target state; simultaneously charging the battery based on the first charging unit meeting the first target state and the second charging unit meeting the second target state; wherein the type of the first charging unit is different from that of the second charging unit, the charging efficiency of the first charging unit is larger than that of the second charging unit, and when the second charging unit is started based on the second strategy, the working condition met by the first charging unit is not affected.

Description

Technical Field

[0001] The present application relates to the field of charging technology, and in particular to a charging control method and an electronic device. Background Art

[0002] In the internal module of the charging unit of a mobile phone or laptop, the charge pump has a very high charging efficiency and a large charging power. Of course, the disadvantages are also obvious. It is necessary to keep the input voltage and output voltage in a fixed ratio during startup or operation (such as input voltage: output voltage = 2:1, 4:1 or 4:2, etc.), and the charge pump does not have the ability to adjust the input current, input voltage, output current or output voltage. Therefore, it is difficult to control the startup process and operation process of the charge pump. The advantages and disadvantages of the buck circuit are just the opposite. It has the ability to adjust the input current, input voltage, output current or output voltage, and is easy to control, but the charging efficiency is low.

[0003] Due to the characteristics of the above two modules, the mobile phone charging system requires the use of these two modules together. However, when used at the same time, since the charge pump needs to maintain a fixed ratio between the input voltage and the output voltage, the buck circuit is likely to affect the operation of the charge pump, and the buck circuit contributes little to the charging power, but generates serious heat. Therefore, at present, the buck circuit is turned off during the charging stage, and the charge pump is used alone for charging. As a result, the charge pump is used alone for a long time, has a short service life, and does not effectively utilize the hardware resources of the buck circuit. Summary of the invention

[0004] The present application provides a charging control method and an electronic device.

[0005] An embodiment of the present application provides a charging control method, the method comprising:

[0006] Determining that the battery meets a first target condition, and starting a first charging unit based on a first strategy until the first charging unit meets a first target state;

[0007] starting a second charging unit based on a second strategy until the second charging unit meets a second target state;

[0008] charging the battery simultaneously based on the first charging unit satisfying the first target state and the second charging unit satisfying the second target state;

[0009] Among them, the type of the first charging unit is different from the type of the second charging unit, the charging efficiency of the first charging unit is greater than the charging efficiency of the second charging unit, and when the second charging unit is started based on the second strategy, it does not affect the working conditions satisfied by the first charging unit.

[0010] Wherein, the working condition satisfied by the first charging unit includes that the input voltage and the output voltage of the first charging unit satisfy a preset ratio;

[0011] When the second charging unit is started based on the second strategy, a change in the preset ratio is less than a first threshold.

[0012] Wherein, starting the first charging unit based on the first strategy includes:

[0013] Controlling the power supply device to gradually increase the output voltage to the first charging unit so that the first charging unit gradually increases the output current to the battery;

[0014] The starting the second charging unit based on the second strategy until the second charging unit is reached includes:

[0015] The power supply device is controlled to gradually increase the output voltage to the second charging unit, and the second charging unit is controlled to gradually increase the received input current.

[0016] The controlling the power supply device to gradually increase the output voltage to the second charging unit, and synchronously controlling the second charging unit to gradually increase the received input current, includes:

[0017] The output voltage of the power supply device to the second charging unit and the threshold of the input current of the second charging unit are increased at first preset time intervals to increase the output current of the second charging unit to the battery, and the initial threshold of the input current of the second charging unit is set to the minimum input current of the second charging unit.

[0018] The method further comprises:

[0019] The second charging unit is controlled to gradually increase the received input current, and the output voltage of the power supply device is synchronously controlled until the output voltage of the power supply device reaches the maximum output voltage of the power supply device, or until the second charging unit has a second maximum output power and the first charging unit has a first maximum output power.

[0020] The method further comprises:

[0021] When the output voltage of the power supply device reaches the maximum output voltage of the power supply device, but the second charging unit has not yet met the second target state, stop increasing the threshold of the input current of the second charging unit to make the second charging unit enter the third target state, in which the second charging unit is powered by a third current, in which the first target state the first charging unit is powered by a first current, in which the second charging unit is powered by a second current, and the sum of the third current and the first current is less than the sum of the second current and the first current.

[0022] The method further comprises:

[0023] Determine that the battery meets the second target condition, and control the power supply device to supply power to the second charging unit based on the third strategy until the second charging unit enters a fourth target state, in which the first charging unit and the second charging unit simultaneously supply power to the battery, and the input voltage change of the battery is less than a second threshold value.

[0024] The method further comprises:

[0025] In response to detecting the presence of at least one preset component whose temperature is greater than or equal to a preset temperature, the threshold of the input current of the second charging unit is gradually reduced to reduce the input current of the second charging unit.

[0026] Wherein, the first charging unit includes at least two first charging sub-units connected in parallel, and the method further includes:

[0027] Selecting a target first charging subunit from the at least two first charging subunits;

[0028] starting a target first charging subunit based on a first strategy until the target first charging subunit meets a first target state;

[0029] Another target first charging sub-unit is started based on the first strategy until the at least two first charging sub-units both meet the first target state.

[0030] In another aspect, the present application provides an electronic device, comprising: a first charging unit, a second charging unit, a controller, and a battery;

[0031] The first charging unit and the second charging unit are connected in parallel to the battery; the type of the first charging unit is different from the type of the second charging unit, and the charging efficiency of the first charging unit is greater than the charging efficiency of the second charging unit;

[0032] The controller is used to: determine that the battery meets a first target condition, and start a first charging unit based on a first strategy until the first charging unit meets a first target state;

[0033] starting a second charging unit based on a second strategy until the second charging unit meets a second target state;

[0034] charging the battery simultaneously based on the first charging unit satisfying the first target state and the second charging unit satisfying the second target state;

[0035] When the second charging unit is started based on the second strategy, the working conditions satisfied by the first charging unit are not affected.

[0036] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present application, nor is it intended to limit the scope of the present application. Other features of the present application will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] By reading the detailed description below with reference to the accompanying drawings, the above and other purposes, features and advantages of the exemplary embodiments of the present application will become readily understood. In the accompanying drawings, several embodiments of the present application are shown in an exemplary and non-limiting manner, wherein:

[0038] In the drawings, the same or corresponding reference numerals represent the same or corresponding parts.

[0039] Figure 1 A flow chart of a charging control method according to an embodiment of the present application is shown;

[0040] Figure 2 A schematic diagram of the structure of a charging circuit, a power supply device, and a battery according to an embodiment of the present application is shown;

[0041] Figure 3 A schematic diagram showing a step-by-step increase in output voltage according to an embodiment of the present application is shown;

[0042] Figure 4 A schematic diagram showing a step-by-step increase in the threshold of the input current according to an embodiment of the present application is shown;

[0043] Figure 5 A flow chart of a charging control method according to another embodiment of the present application is shown;

[0044] Figure 6 A schematic diagram of the structure of a charging circuit, a power supply device, and a battery according to another embodiment of the present application is shown;

[0045] Figure 7 A schematic structural diagram of a charging control device according to an embodiment of the present application is shown;

[0046] Figure 8A schematic diagram of the structure of an electronic device according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0047] In order to make the purpose, features, and advantages of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0048] In order to enable the charge pump and the buck circuit to charge the battery at the same time and avoid the mutual influence between the two charging circuits during the startup process, an embodiment of the present application provides a charging control method, such as Figure 1 As shown, the method includes:

[0049] Step 101 : determine whether a battery meets a first target condition, and start a first charging unit based on a first strategy until the first charging unit meets a first target state.

[0050] The method is applied to a charging circuit, wherein the charging circuit includes a first charging unit and a second charging unit. Figure 2 As shown, one end of the charging circuit is electrically connected to the power supply device, and the other end is electrically connected to the battery, and the first charging unit and the second charging unit in the charging circuit are connected in parallel.

[0051] When charging the battery through the charging circuit, it is necessary to first determine whether the battery meets the first target condition.

[0052] In this embodiment, the first target condition may include at least one of the following: the battery voltage detection meets the charging condition (such as the battery voltage is within a preset range); the battery temperature meets the charging condition (such as the battery temperature is within a preset range); the charging protocol authentication of the power supply device is passed. In other embodiments, the first target condition can be added or deleted, and any other target condition that can determine whether the battery meets the charging condition can be added.

[0053] After determining that the battery meets the first target condition, the first charging unit is started based on the first strategy until the first charging unit meets the first target state, during which the second charging unit is in a closed state.

[0054] In this embodiment, the first charging unit satisfies the first target state when the output current of the first charging unit to the battery reaches the maximum output current, or when the output power of the first charging unit to the battery reaches the maximum output power. In other embodiments, the first target state may also be any other state indicating that the first charging unit can enter constant current charging of the battery.

[0055] When the first charging unit meets the first target state, the first charging unit charges the battery with the maximum output current of the first charging unit, or the first charging unit charges the battery with the maximum output power of the first charging unit. In this stage, it can be understood that the battery is first trickle-charged based on the first charging unit until the first charging unit meets the first target state, and then the battery is charged with a constant current based on the first charging unit.

[0056] In one embodiment, the first strategy controls the power supply device to increase the output voltage of the first charging unit in a step-by-step manner, so that the output current of the first charging unit to the battery is also increased in a step-by-step manner until the first charging unit meets the first target state.

[0057] In another embodiment, the first strategy controls the power supply device to increase the output current of the first charging unit in a step-by-step manner, so that the output current of the first charging unit to the battery is also increased in a step-by-step manner until the first charging unit meets the first target state.

[0058] Step 102 : starting a second charging unit based on a second strategy until the second charging unit meets a second target state.

[0059] After the first charging unit meets the first target state, the second charging unit is started based on the second strategy until the second charging unit meets the second target state. During this stage, the first charging unit is always in the first target state to charge the battery, and the second charging unit charges the battery based on the second strategy.

[0060] In this embodiment, the second charging unit satisfies the second target state when the output current of the second charging unit to the battery reaches the maximum output current, or when the output power of the second charging unit to the battery reaches the maximum output power. In other embodiments, the second target state may also be any other state indicating that the second charging unit can enter constant current charging of the battery.

[0061] When the second charging unit meets the second target state, the second charging unit charges the battery with the maximum output current of the second charging unit, or the second charging unit charges the battery with the maximum output power of the second charging unit. In this stage, it can be understood that the battery is charged with a constant current based on the first charging unit, and the battery is trickle charged based on the second charging unit at the same time, until the second charging unit meets the second target state, and then the battery is charged with a constant current based on the first charging unit and the second charging unit at the same time.

[0062] In one embodiment, the second strategy controls the second charging unit to start with the minimum output current of the second charging unit, and then controls the input current received by the second charging unit to increase in steps, so that the output current of the second charging unit to the battery increases in steps until the second charging unit meets the second target state.

[0063] In another embodiment, the second strategy controls the second charging unit to start with the minimum output current of the second charging unit, and then controls the power supply device to increase the output voltage of the second charging unit in steps, so that the output current of the second charging unit to the battery is increased in steps until the second charging unit meets the second target state.

[0064] In another embodiment, the second strategy controls the second charging unit to start with the minimum output current of the second charging unit, and then simultaneously controls the power supply device to increase the output voltage of the second charging unit and the input current received by the second charging unit in a step-by-step manner, so that the output current of the second charging unit to the battery is increased in a step-by-step manner until the second charging unit meets the second target state.

[0065] Step 103: charging the battery simultaneously based on the first charging unit satisfying the first target state and the second charging unit satisfying the second target state.

[0066] In this stage, it can be understood that the battery is charged with a constant current based on the first charging unit and the second charging unit at the same time.

[0067] Among them, the type of the first charging unit is different from the type of the second charging unit, the charging efficiency of the first charging unit is greater than the charging efficiency of the second charging unit, and when the second charging unit is started based on the second strategy, it does not affect the working conditions satisfied by the first charging unit.

[0068] In this embodiment, the first charging unit uses a charge pump and the second charging unit uses a step-down circuit. In other embodiments, as long as the charging efficiency of the first charging unit is greater than the charging efficiency of the second charging unit, the first charging unit and the second charging unit can use any charging unit.

[0069] It should be noted that when the second charging unit is started based on the second strategy, it is started with the minimum output current of the second charging unit, so it will not affect the working conditions satisfied by the first charging unit.

[0070] In the above scheme, when it is determined that the battery meets the first target condition, the first charging unit is started through the first strategy, so that the output current of the first charging unit to the battery is increased in a step-by-step manner until the first charging unit meets the first target state. In the initial stage of charging the battery, the first charging unit charges the battery with a smaller output current, which can reduce the stress on the battery and avoid using a larger output current to charge the battery at the beginning, thereby causing overheating or damage to the battery. In addition, when the battery power is low, the internal resistance of the battery is large. If a larger output current is used to charge the battery at the beginning, more energy loss will be caused due to the internal resistance. Therefore, charging with a smaller output current at the beginning can improve the energy conversion efficiency during charging. However, since the second charging unit is currently started directly based on the maximum output current of the second charging unit, this will have a greater impact on the working conditions met by the first charging unit, resulting in abnormal operation of the first charging unit. Therefore, after the first charging unit meets the first target state, the second charging unit is controlled by the second strategy to start with the minimum output current of the second charging unit, so that the output current of the second charging unit to the battery is increased in a step-by-step manner starting from the minimum output current of the second charging unit. When the second charging unit is started based on the second strategy, the working conditions satisfied by the first charging unit are not affected, which significantly improves the charging stability and avoids abnormal operation of the first charging unit. After the second charging unit reaches the second target state, the first charging unit that meets the first target state and the second charging unit that meets the second target state charge the battery at the same time, which significantly improves the efficiency of charging the battery.

[0071] In an example of the present application, a charging control method is also provided, wherein the working conditions satisfied by the first charging unit include that the input voltage and the output voltage of the first charging unit satisfy a preset ratio.

[0072] For example, if the preset ratio is set to 2:1 or 3:2, the input voltage and the output voltage of the first charging unit need to meet the ratio of 2:1 or 3:2 to meet the working conditions.

[0073] When the second charging unit is started based on the second strategy, a change in the preset ratio is less than a first threshold.

[0074] In the above scheme, the second strategy controls the second charging unit to start with the minimum output current of the second charging unit, so that the output current of the second charging unit to the battery increases step by step from the minimum output current of the second charging unit until the second charging unit meets the second target state. Since the second charging unit is started with the minimum output current of the second charging unit, when the second charging unit is started, the ratio of the input voltage to the output voltage of the first charging unit, that is, the change of the preset ratio, can be less than the first threshold, so as not to cause abnormal operation of the first charging unit. The charging stability is significantly improved, avoiding the mutual influence when the battery is charged by the first charging unit and the second charging unit at the same time.

[0075] In an example of the present application, a charging control method is also provided, wherein starting the first charging unit based on the first strategy includes:

[0076] The power supply device is controlled to gradually increase the output voltage to the first charging unit, so that the first charging unit gradually increases the output current to the battery.

[0077] For example, the initial output voltage of the power supply device to the first charging unit is set to 2V, with a step size of 2V, and the output voltage of the power supply device to the first charging unit is gradually increased, so that the output voltage of the power supply device to the first charging unit is gradually increased to 4V, 6V, 8V, and 10V. At the same time, the output current of the first charging unit to the battery is also gradually increased to 2A, 3A, 4A, and 5A.

[0078] It should be noted that if the working conditions that the first charging unit needs to meet include that the input voltage and output voltage of the first charging unit meet a preset ratio. Since the input voltage of the battery rises steadily during charging. Therefore, it is necessary to obtain the input voltage of the battery, and then determine the output voltage of the power supply device to the first charging unit based on the preset ratio, and finally increase the actual output voltage of the first charging unit based on the determined output voltage of the first charging unit. Repeat the above operation until the first charging unit enters the first target state.

[0079] The output voltage Vta of the power supply device to the first charging unit may be determined based on the acquired input voltage of the battery and a preset ratio based on the following formula:

[0080]

[0081] Where Vhat is the input voltage of the battery obtained, is a preset ratio (for example, the preset ratio is 1:2, which is equal to ).

[0082] The starting the second charging unit based on the second strategy until the second charging unit is reached includes:

[0083] The power supply device is controlled to gradually increase the output voltage to the second charging unit, and the second charging unit is controlled to gradually increase the received input current.

[0084] For example, the initial output voltage of the power supply device to the second charging unit is set to 2V, the step size is 2V, and the output voltage of the power supply device to the first charging unit is gradually increased, so that the output voltage of the power supply device to the first charging unit is gradually increased to 4V, 6V, 8V, and 10V. If the input current received by the second charging unit is not controlled, the output current of the second charging unit will gradually increase to 2A, 3A, 4A, and 5A, which may affect the first charging unit. Therefore, the input current received by the second charging unit is initially limited to 0.5A at the same time, and while gradually increasing the output voltage of the power supply device to the first charging unit, the input current received by the second charging unit will also be gradually increased, and the step size is set to 0.5A, so that it is gradually increased to 1A, 1.5A, 2A, and 2.5A. This avoids affecting the first charging unit.

[0085] In the above scheme, the output voltage of the first charging unit is increased in a step-by-step manner by controlling the power supply device, so that the output current of the first charging unit to the battery is also increased in a step-by-step manner. In the initial stage of charging the battery, the first charging unit charges the battery with a smaller output current, which can reduce the stress on the battery and avoid using a larger output current to charge the battery initially, thereby causing overheating or damage to the battery. In addition, when the battery power is low, the internal resistance of the battery is large. If a larger output current is used to charge the battery initially, more energy loss will be caused due to the internal resistance. Therefore, charging with a smaller output current initially can improve the energy conversion efficiency during charging. The output current of the battery is increased in a step-by-step manner by controlling the second charging unit. When the second charging unit is started based on the second strategy, the working conditions satisfied by the first charging unit are not affected, the charging stability is significantly improved, and the abnormal operation of the first charging unit is avoided.

[0086] In an example of the present application, a charging control method is also provided, wherein the controlling the power supply device to gradually increase the output voltage to the second charging unit and synchronously controlling the second charging unit to gradually increase the received input current comprises:

[0087] The output voltage of the power supply device to the second charging unit and the threshold of the input current of the second charging unit are increased at first preset time intervals to increase the output current of the second charging unit to the battery, and the initial threshold of the input current of the second charging unit is set to the minimum input current of the second charging unit.

[0088] For example, the first preset duration is set to 1 second, the initial output voltage of the power supply device to the second charging unit is set to 2V, the step length is 2V, and the initial threshold of the input current received by the second charging unit is set to 0.5A. Figure 3 As shown, at the first second, the output voltage of the power supply device to the second charging unit is increased to 4V, at the second second, the output voltage of the power supply device to the second charging unit is increased to 6V, at the third second, the output voltage of the power supply device to the second charging unit is increased to 8V, and at the fourth second, the output voltage of the power supply device to the second charging unit is increased to 10V. Figure 4 As shown, at the first second, the threshold of the input current received by the second charging unit is increased to 1A, at the second second, the threshold of the input current received by the second charging unit is increased to 1.5A, at the third second, the threshold of the input current received by the second charging unit is increased to 2A, and at the fourth second, the threshold of the input current received by the second charging unit is increased to 2.5A. Until the maximum input current that the second charging unit can receive is reached. The output current of the second charging unit to the battery will also increase with the increase of the input current of the second charging unit.

[0089] It should be noted that when the input current received by the second charging unit reaches the maximum input current that the second charging unit can receive, the threshold of the input current of the second charging unit is stopped from being increased so that the second charging unit enters the second target state and charges the battery with the current output current.

[0090] In the above scheme, by setting the first preset time length, the thresholds of the output voltage of the power supply device to the second charging unit and the input current of the second charging unit are increased every first preset time length, so that the time from the start-up of the second charging unit to meeting the second target state can be more flexibly controlled.

[0091] In an example of the present application, a charging control method is also provided, the method further comprising:

[0092] The second charging unit is controlled to gradually increase the received input current, and the output voltage of the power supply device is synchronously controlled until the output voltage of the power supply device reaches the maximum output voltage of the power supply device, or until the second charging unit has a second maximum output power and the first charging unit has a first maximum output power.

[0093] When the second charging unit is controlled to gradually increase the received input current and the output voltage of the power supply device is synchronously controlled, two situations may occur:

[0094] First, before the second charging unit reaches the second maximum output power (i.e., before the second target state is met), the output voltage of the power supply device reaches the maximum output voltage first. At this time, the output voltage of the power supply device cannot be further increased, and therefore, the input current received by the second charging unit cannot be further increased.

[0095] For example, the maximum output voltage of the power supply device is 18V, the input current that the second charging unit needs to receive to reach the second maximum output power is 2.5A, and the input current that the first charging unit needs to receive to reach the first maximum output power is 2.5A. When the first charging unit reaches the first maximum output power, the output voltage of the power supply device is 10V. At this time, it is necessary to start the second charging unit based on the second strategy, increase the output voltage of the power supply device to 12V, and set the initial input current received by the second charging unit to 0.5A. The output voltage of the power supply device is gradually increased in steps of 2V, so that the output voltage of the power supply device is gradually increased to 14V, 16V, and 18V, reaching the maximum output voltage of the power supply device of 18V, and the input current received by the second charging unit is also gradually increased to 1A, 1.5A, and 2A. At this time, the power supply device has reached the maximum output voltage of 18V, and the input current received by the second charging unit is 2A, which has not yet reached the input current of 2.5A required to be received for the second maximum output power. Therefore, the second charging unit performs constant current charging on the battery with the current output current to the battery, and no longer continues to increase the output voltage of the power supply device and the input current received by the second charging unit.

[0096] The second type is that before the output voltage of the power supply device reaches the maximum output voltage, the second charging unit reaches the second maximum output power (ie, the second charging unit meets the second target state) and the first charging unit also reaches the first maximum output power (ie, the first charging unit meets the first target state).

[0097] For example, the maximum output voltage of the power supply device is 30V, the input current that the second charging unit needs to receive to reach the second maximum output power is 2.5A, and the input current that the first charging unit needs to receive to reach the first maximum output power is 2.5A. When the first charging unit reaches the first maximum output power, the output voltage of the power supply device is 10V. At this time, it is necessary to start the second charging unit based on the second strategy, increase the output voltage of the power supply device to 12V, and set the initial input current received by the second charging unit to 0.5A. The output voltage of the power supply device is gradually increased in steps of 2V, so that the output voltage of the power supply device is gradually increased to 14V, 16V, 18V, and 20V, and the input current received by the second charging unit is also gradually increased to 1A, 1.5A, 2A, and 2.5A. At this time, the input current received by the first charging unit reaches the input current of 2.5A that needs to be received for the first maximum output power, and the input current received by the second charging unit also reaches the input current of 2.5A that needs to be received for the second maximum output power. Therefore, the first charging unit charges the battery with constant current using the current output current to the battery, and the second charging unit also charges the battery with constant current using the current output current to the battery, and no longer continues to increase the output voltage of the power supply device and the input current received by the second charging unit.

[0098] In the above scheme, if the output voltage of the power supply device reaches the maximum output voltage before the second charging unit reaches the second maximum output power, if the output voltage of the power supply device and the input current received by the second charging unit continue to be increased, it may affect the working conditions of the first charging device. Therefore, the output voltage of the power supply device and the input current received by the second charging unit are no longer increased. If the second charging unit reaches the second maximum output power and the first charging unit also reaches the first maximum output power before the output voltage of the power supply device reaches the maximum output voltage, if the output voltage of the power supply device and the input current received by the second charging unit are continued to be increased, it may cause overvoltage, trigger the protection mechanism of the charging circuit, cut off the current or reduce the charging speed. Therefore, the output voltage of the power supply device and the input current received by the second charging unit are no longer increased. The stability of charging is further improved.

[0099] In an example of the present application, a charging control method is also provided, the method further comprising:

[0100] When the output voltage of the power supply device reaches the maximum output voltage of the power supply device, but the second charging unit has not yet met the second target state, stop increasing the threshold of the input current of the second charging unit to make the second charging unit enter the third target state, in which the second charging unit is powered by a third current, in which the first target state the first charging unit is powered by a first current, in which the second charging unit is powered by a second current, and the sum of the third current and the first current is less than the sum of the second current and the first current.

[0101] For example, the maximum output voltage of the power supply device is 18V, the input current that the second charging unit needs to receive to reach the second maximum output power is 2.5A, and the input current that the first charging unit needs to receive to reach the first maximum output power is 2.5A. When the first charging unit reaches the first maximum output power, the output voltage of the power supply device is 10V. At this time, it is necessary to start the second charging unit based on the second strategy, increase the output voltage of the power supply device to 12V, and set the initial input current received by the second charging unit to 0.5A. The output voltage of the power supply device is gradually increased in steps of 2V, so that the output voltage of the power supply device is gradually increased to 14V, 16V, and 18V, reaching the maximum output voltage of the power supply device 18V, and the input current received by the second charging unit is also gradually increased to 1A, 1.5A, and 2A. At this time, the power supply device has reached the maximum output voltage of 18V, and the input current received by the second charging unit is 2A, which has not yet reached the input current 2.5A that needs to be received for the second maximum output power. The output current of the second charging unit to the battery when the second maximum output power is reached is 2A (second current). At this time, the output current of the first charging unit to the battery is 2A (first current), and the output current of the second charging unit to the battery is 1.5A (third current), but the output voltage of the power supply device has reached the maximum output voltage and cannot be further increased, and the output current of the second charging unit to the battery cannot be further increased. Then, the threshold of the input current of the second charging unit is stopped from being increased, so that the second charging unit enters the third target state and supplies power to the battery with the third current, while the first charging unit supplies power to the battery with the first current.

[0102] In the above scheme, if the output voltage of the power supply device reaches the maximum output voltage before the second charging unit reaches the second maximum output power, if the output voltage of the power supply device and the input current received by the second charging unit continue to be increased, it may affect the working condition of the first charging device. Therefore, the output voltage of the power supply device and the input current received by the second charging unit are no longer increased. The charging stability can be improved. The second charging unit enters the third target state and supplies power to the battery with the third current, while the first charging unit supplies power to the battery with the first current, so that when the output voltage of the power supply device reaches the maximum output voltage, the charging efficiency of the battery is maximized.

[0103] In an example of the present application, a charging control method is also provided, the method further comprising:

[0104] Determine that the battery meets the second target condition, and control the power supply device to supply power to the second charging unit based on the third strategy until the second charging unit enters a fourth target state, in which the first charging unit and the second charging unit simultaneously supply power to the battery, and the input voltage change of the battery is less than a second threshold value.

[0105] In this embodiment, the second target condition may include at least one of the following: the input voltage of the battery reaches the safety voltage threshold of the battery (the battery is preset with a safety voltage threshold); the battery power reaches a preset power. In other embodiments, the second target condition may be added or deleted, and any other target condition that can determine whether the battery meets the requirements for constant voltage charging may be added.

[0106] After determining that the battery meets the second target condition, the power supply device is controlled to supply power to the second charging unit based on the third strategy until the second charging unit enters the fourth target state. During this stage, and after the second charging unit enters the fourth target state, the battery is powered by the first charging unit and the second charging unit at the same time.

[0107] Since the battery meets the second target condition, if the battery continues to be charged with a larger current, the input voltage of the battery will continue to increase, resulting in overheating or damage to the battery. Therefore, the third strategy needs to control the power supply device to reduce the output voltage of the second charging unit in a step-by-step manner, so that the output current of the second charging unit to the battery is also reduced in a step-by-step manner, thereby making the change of the input voltage of the battery less than the second threshold, that is, the first charging unit and the second charging unit charge the battery at a constant voltage.

[0108] In the above scheme, after the battery meets the second target condition, the power supply device is controlled based on the third strategy to supply power to the second charging unit until the second charging unit enters the fourth target state, so that the input voltage of the battery can be stabilized below the safe voltage threshold of the battery, preventing the battery from overheating or being damaged, and further improving the stability of charging.

[0109] In an example of the present application, a charging control method is also provided, the method further comprising:

[0110] In response to detecting the presence of at least one preset component whose temperature is greater than or equal to a preset temperature, the threshold of the input current of the second charging unit is gradually reduced to reduce the input current of the second charging unit.

[0111] In this embodiment, the preset temperature can be set to 45 degrees. In other embodiments, the preset temperature can be set based on specific needs.

[0112] When it is detected that there is a preset component with a temperature greater than or equal to the preset temperature, it indicates that temperature control is required, and because the charging efficiency of the second charging unit is lower than that of the first charging unit, the threshold of the input current of the second charging unit is gradually reduced, and then the input current of the second charging unit is reduced, so that the temperature of the second charging unit and the battery is reduced, and finally the temperature of the preset component with a temperature greater than or equal to the preset temperature is also reduced.

[0113] In the above scheme, when a preset component with a temperature greater than or equal to a preset temperature is detected, the threshold of the input current of the second charging unit is gradually reduced, thereby reducing the input current of the second charging unit. When temperature control is required, the input current of the second charging unit with lower charging efficiency can be reduced to achieve temperature control, thereby avoiding damage or safety risks caused by overheating of the battery and the charging circuit. The stability and efficiency of charging are further improved. And by gradually reducing the input current of the second charging unit, the impact on the working state of the first charging unit is reduced, further improving the stability of charging.

[0114] In an example of the present application, a charging control method is also provided, such as Figure 5 As shown, the first charging unit includes at least two first charging sub-units connected in parallel, and the method further includes:

[0115] like Figure 6 As shown, Figure 6 The charging circuit shown includes a first charging unit and a second charging unit, and the first charging unit includes three first charging sub-units connected in parallel.

[0116] Step 201 : selecting a target first charging sub-unit from the at least two first charging sub-units.

[0117] When the first charging unit includes at least two first charging sub-units connected in parallel, the impedances of circuits where different first charging sub-units are located are different, and their respective working states will be affected when they are started at the same time.

[0118] Therefore, it is necessary to first select a target first charging sub-unit from at least two first charging sub-units.

[0119] Step 202: start a target first charging subunit based on a first strategy until the target first charging subunit meets a first target state.

[0120] The target first charging subunit is started based on the first strategy until the target first charging subunit meets the first target state.

[0121] In this embodiment, the target first charging subunit satisfies the first target state when the output current of the target first charging subunit to the battery reaches the maximum output current, or when the output power of the target first charging subunit to the battery reaches the maximum output power. In other embodiments, the first target state may also be any other state indicating that the target first charging subunit can enter constant current charging of the battery.

[0122] When the target first charging subunit meets the first target state, the target first charging subunit charges the battery with the maximum output current of the target first charging subunit, or the target first charging subunit charges the battery with the maximum output power of the target first charging subunit. In this stage, it can be understood that the battery is first trickle-charged based on the target first charging subunit until the target first charging subunit meets the first target state, and then the battery is charged with a constant current based on the target first charging subunit.

[0123] In one embodiment, the first strategy controls the power supply device to increase the output voltage of the target first charging subunit in a step-by-step manner, so that the output current of the target first charging subunit to the battery is also increased in a step-by-step manner until the target first charging subunit meets the first target state.

[0124] In another embodiment, the first strategy controls the power supply device to increase the output current of the target first charging subunit in a step-by-step manner, so that the output current of the target first charging subunit to the battery is also increased in a step-by-step manner until the target first charging subunit meets the first target state.

[0125] Step 203 : starting another target first charging sub-unit based on the first strategy until the at least two first charging sub-units meet the first target state.

[0126] Another target first charging subunit is selected from the remaining first charging subunits, and the target first charging subunit is started based on the first strategy, and the above operations are repeated until all the first charging subunits meet the first target state.

[0127] In the above scheme, when the first charging unit includes multiple first charging sub-units, the first charging sub-units are started step by step based on the first strategy to prevent the multiple first charging sub-units from affecting each other's working states when the multiple first charging sub-units are started at the same time, thereby further improving the charging stability.

[0128] In order to implement the above charging control method, Figure 7 As shown, an example of the present application provides a charging control device, including:

[0129] A control module 10, configured to determine that the battery meets a first target condition, start a first charging unit based on a first strategy until the first charging unit meets a first target state; and start a second charging unit based on a second strategy until the second charging unit meets a second target state;

[0130] A charging module 20 is used to simultaneously charge the battery based on the first charging unit that meets the first target state and the second charging unit that meets the second target state; wherein the type of the first charging unit is different from the type of the second charging unit, the charging efficiency of the first charging unit is greater than the charging efficiency of the second charging unit, and when the second charging unit is started based on the second strategy, the working conditions satisfied by the first charging unit are not affected.

[0131] The control module 10 is further configured to control the input voltage and output voltage of the first charging unit to meet a preset ratio; and to start the second charging unit based on a second strategy so that a change in the preset ratio is less than a first threshold.

[0132] Among them, the control module 10 is also used to control the power supply device to gradually increase the output voltage to the first charging unit, so that the first charging unit gradually increases the output current to the battery; and control the power supply device to gradually increase the output voltage to the second charging unit, and control the second charging unit to gradually increase the received input current.

[0133] Among them, the control module 10 is also used to increase the output voltage of the power supply device to the second charging unit and the threshold of the input current of the second charging unit every first preset time period to increase the output current of the second charging unit to the battery, and the initial threshold of the input current of the second charging unit is set to the minimum input current of the second charging unit.

[0134] Among them, the control module 10 is also used to control the second charging unit to gradually increase the received input current, and synchronously control the output voltage of the power supply device until the output voltage of the power supply device reaches the maximum output voltage of the power supply device, or until the second charging unit has a second maximum output power and the first charging unit has a first maximum output power.

[0135] Among them, the control module 10 is also used to stop increasing the threshold of the input current of the second charging unit when the output voltage of the power supply device reaches the maximum output voltage of the power supply device but the second charging unit has not yet met the second target state, so that the second charging unit enters a third target state, in which the second charging unit is powered by a third current, in the first target state, the first charging unit is powered by a first current, in the second target state, the second charging unit is powered by a second current, and the sum of the third current and the first current is less than the sum of the second current and the first current.

[0136] Among them, the control module 10 is also used to determine that the battery meets the second target condition, and control the power supply device to supply power to the second charging unit based on the third strategy until the second charging unit enters a fourth target state, in which the first charging unit and the second charging unit simultaneously supply power to the battery, and the input voltage change of the battery is less than the second threshold value.

[0137] The control module 10 is further configured to gradually reduce the threshold of the input current of the second charging unit in response to detecting the presence of at least one preset component having a temperature greater than or equal to a preset temperature, so as to reduce the input current of the second charging unit.

[0138] Among them, it also includes:

[0139] The control module 10 is also used to select a target first charging sub-unit from the at least two first charging sub-units; start the target first charging sub-unit based on the first strategy until the target first charging sub-unit meets the first target state; and start another target first charging sub-unit based on the first strategy until the at least two first charging sub-units meet the first target state.

[0140] According to an embodiment of the present disclosure, the present disclosure also provides an electronic device and a readable storage medium.

[0141] Figure 8A schematic block diagram of an example electronic device 300 that can be used to implement an embodiment of the present disclosure is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present disclosure described and / or required herein.

[0142] like Figure 8 As shown, the electronic device 300 includes: a first charging unit 301, a second charging unit 302, a controller 303 and a battery 304;

[0143] The first charging unit 301 and the second charging unit 302 are connected in parallel with the battery 304; the type of the first charging unit 301 is different from the type of the second charging unit 302, and the charging efficiency of the first charging unit 301 is greater than the charging efficiency of the second charging unit 302;

[0144] The controller 303 is used to: determine that the battery 304 meets the first target condition, and start the first charging unit 301 based on the first strategy until the first charging unit 301 meets the first target state;

[0145] Starting the second charging unit 302 based on the second strategy until the second charging unit 302 meets the second target state;

[0146] The first charging unit 301 that meets the first target state and the second charging unit 302 that meets the second target state simultaneously charge the battery 304; when the second charging unit 302 is started based on the second strategy, the working conditions met by the first charging unit 301 are not affected.

[0147] The working condition satisfied by the first charging unit 301 includes that the input voltage and the output voltage of the first charging unit 301 satisfy a preset ratio;

[0148] When the second charging unit 302 is started based on the second strategy, a change in the preset ratio is less than a first threshold.

[0149] The controller 303 controls the power supply device to gradually increase the output voltage to the first charging unit 301, so that the first charging unit 301 gradually increases the output current to the battery 304; and controls the power supply device to gradually increase the output voltage to the second charging unit 302, and controls the second charging unit 302 to gradually increase the received input current.

[0150] Among them, the controller 303 increases the output voltage of the power supply device to the second charging unit 302 and the threshold of the input current of the second charging unit 302 every first preset time period to increase the output current of the second charging unit 302 to the battery 304, and the initial threshold of the input current of the second charging unit 302 is set to the minimum input current of the second charging unit 302.

[0151] Among them, the controller 303 controls the second charging unit 302 to gradually increase the received input current, and synchronously controls the output voltage of the power supply device until the output voltage of the power supply device reaches the maximum output voltage of the power supply device, or until the second charging unit 302 has a second maximum output power and the first charging unit 301 has a first maximum output power.

[0152] Among them, when the output voltage of the power supply device reaches the maximum output voltage of the power supply device but the second charging unit 302 has not yet met the second target state, the controller 303 stops increasing the threshold of the input current of the second charging unit 302, so that the second charging unit 302 enters a third target state, in which the second charging unit 302 is supplied with a third current, in the first target state, the first charging unit 301 is supplied with a first current, in the second target state, the second charging unit is supplied with a second current, and the sum of the third current and the first current is less than the sum of the second current and the first current.

[0153] Among them, the controller 303 determines that the battery 304 meets the second target condition, and controls the power supply device to supply power to the second charging unit 302 based on the third strategy until the second charging unit 302 enters the fourth target state. Under the fourth target state, the first charging unit 301 and the second charging unit 302 simultaneously supply power to the battery 304, and the input voltage change of the battery 304 is less than the second threshold.

[0154] In response to detecting the presence of at least one preset component whose temperature is greater than or equal to a preset temperature, the controller 303 gradually reduces the threshold of the input current of the second charging unit 302 to reduce the input current of the second charging unit 302 .

[0155] The controller 303 selects a target first charging subunit from the at least two first charging subunits;

[0156] A target first charging subunit is activated based on the first strategy until the target first charging subunit meets a first target state; and another target first charging subunit is activated based on the first strategy until the at least two first charging subunits meet the first target state.

[0157] Various implementations of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), integrated systems on a chip (SOCs), complex programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various implementations can include: being implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0158] The program code for implementing the method of the present disclosure may be written in any combination of one or more programming languages. These program codes may be provided to a processor or controller of a general-purpose computer, a special-purpose computer, or other programmable data processing device, so that the program code, when executed by the processor or controller, enables the functions / operations specified in the flow chart and / or block diagram to be implemented. The program code may be executed entirely on the machine, partially on the machine, partially on the machine and partially on a remote machine as a stand-alone software package, or entirely on a remote machine or server.

[0159] In the context of the present disclosure, a machine-readable medium may be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, device, or equipment. A machine-readable medium may be a machine-readable signal medium or a machine-readable storage medium. A machine-readable medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or equipment, or any suitable combination of the foregoing. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0160] To provide interaction with a user, the systems and techniques described herein can be implemented on a computer having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user can provide input to the computer. Other types of devices can also be used to provide interaction with the user; for example, the feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including acoustic input, voice input, or tactile input).

[0161] The systems and techniques described herein may be implemented in a computing system that includes back-end components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes front-end components (e.g., a user computer with a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such back-end components, middleware components, or front-end components. The components of the system may be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), and the Internet.

[0162] A computer system may include a client and a server. The client and the server are generally remote from each other and usually interact through a communication network. The relationship of client and server is generated by computer programs running on respective computers and having a client-server relationship with each other. The server may be a cloud server, a server of a distributed system, or a server combined with a blockchain.

[0163] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps recorded in this disclosure can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solutions disclosed in this disclosure can be achieved, and this document does not limit this.

[0164] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present disclosure, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0165] The above is only a specific embodiment of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A charging control method, the method comprising: Determining that the battery meets a first target condition, and starting a first charging unit based on a first strategy until the first charging unit meets a first target state; starting a second charging unit based on a second strategy until the second charging unit meets a second target state; charging the battery simultaneously based on the first charging unit satisfying the first target state and the second charging unit satisfying the second target state; Among them, the type of the first charging unit is different from the type of the second charging unit, the charging efficiency of the first charging unit is greater than the charging efficiency of the second charging unit, and when the second charging unit is started based on the second strategy, it does not affect the working conditions satisfied by the first charging unit.

2. The method according to claim 1, wherein the working condition satisfied by the first charging unit comprises that the input voltage and the output voltage of the first charging unit satisfy a preset ratio; When the second charging unit is started based on the second strategy, a change in the preset ratio is less than a first threshold.

3. The method according to claim 1, wherein starting the first charging unit based on the first strategy comprises: Controlling the power supply device to gradually increase the output voltage to the first charging unit so that the first charging unit gradually increases the output current to the battery; The starting the second charging unit based on the second strategy until the second charging unit is reached includes: The power supply device is controlled to gradually increase the output voltage to the second charging unit, and the second charging unit is controlled to gradually increase the received input current.

4. The method according to claim 3, wherein controlling the power supply device to gradually increase the output voltage to the second charging unit and synchronously controlling the second charging unit to gradually increase the received input current comprises: The output voltage of the power supply device to the second charging unit and the threshold of the input current of the second charging unit are increased at first preset time intervals to increase the output current of the second charging unit to the battery, and the initial threshold of the input current of the second charging unit is set to the minimum input current of the second charging unit.

5. The method according to claim 3, further comprising: The second charging unit is controlled to gradually increase the received input current, and the output voltage of the power supply device is synchronously controlled until the output voltage of the power supply device reaches the maximum output voltage of the power supply device, or until the second charging unit has a second maximum output power and the first charging unit has a first maximum output power.

6. The method according to claim 5, further comprising: When the output voltage of the power supply device reaches the maximum output voltage of the power supply device, but the second charging unit has not yet met the second target state, stop increasing the threshold of the input current of the second charging unit to make the second charging unit enter the third target state, in which the second charging unit is powered by a third current, in which the first target state the first charging unit is powered by a first current, in which the second charging unit is powered by a second current, and the sum of the third current and the first current is less than the sum of the second current and the first current.

7. The method according to claim 1, further comprising: Determine that the battery meets the second target condition, and control the power supply device to supply power to the second charging unit based on the third strategy until the second charging unit enters a fourth target state, in which the first charging unit and the second charging unit simultaneously supply power to the battery, and the input voltage change of the battery is less than a second threshold value.

8. The method according to claim 1, further comprising: In response to detecting the presence of at least one preset component whose temperature is greater than or equal to a preset temperature, the threshold of the input current of the second charging unit is gradually reduced to reduce the input current of the second charging unit.

9. The method according to claim 1, wherein the first charging unit comprises at least two first charging sub-units connected in parallel, and the method further comprises: Selecting a target first charging subunit from the at least two first charging subunits; starting a target first charging subunit based on a first strategy until the target first charging subunit meets a first target state; Another target first charging sub-unit is started based on the first strategy until the at least two first charging sub-units both meet the first target state.

10. An electronic device, comprising: A first charging unit, a second charging unit, a controller and a battery; The first charging unit and the second charging unit are connected in parallel with the battery; The type of the first charging unit is different from the type of the second charging unit, and the charging efficiency of the first charging unit is greater than the charging efficiency of the second charging unit; The controller is used to: determine that the battery meets a first target condition, and start a first charging unit based on a first strategy until the first charging unit meets a first target state; starting a second charging unit based on a second strategy until the second charging unit meets a second target state; charging the battery simultaneously based on the first charging unit satisfying the first target state and the second charging unit satisfying the second target state; When the second charging unit is started based on the second strategy, the working conditions satisfied by the first charging unit are not affected.

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