Charging control method and device, and storage medium

Abstract

The present disclosure relates to a charging control method and device, and a storage medium, and relates to the field of battery management, and is applied to a terminal device. The terminal device is provided with a battery, a step-down conversion circuit and at least one switched capacitor circuit. The method comprises: detecting the temperature of the terminal device. According to the temperature of the terminal device, the charging current of the battery is determined. According to the charging current, the target charging circuit is determined in the step-down conversion circuit and the at least one switched capacitor circuit. The target charging circuit is controlled to charge the battery according to the charging current. According to the temperature of the terminal device, the size of the charging current is determined, and the target charging circuit is determined to charge the battery, so that the charging efficiency of the battery can be improved while avoiding the temperature of the terminal device being too high.

Description

Technical Field

[0001] This disclosure relates to the field of battery management, and more particularly to a charging control method, apparatus, and storage medium. Background Technology

[0002] With the rapid development of society, fast charging technology for terminal devices (such as mobile phones and tablets) is also constantly evolving. Generally, the faster a terminal device charges, the greater the corresponding charging current, leading to a rapid increase in the device's temperature. Currently, methods to improve heat dissipation rates include using better heat dissipation materials and larger heat dissipation areas, but this increases the cost and weight of the device. Alternatively, reducing the charging current can control the device's temperature, but this reduces battery charging efficiency. Summary of the Invention

[0003] To overcome the problems existing in related technologies, this disclosure provides a charging control method, device and storage medium.

[0004] According to a first aspect of the present disclosure, a charging control method is provided, applied to a terminal device, the terminal device being provided with a battery, a buck converter circuit, and at least one switched capacitor circuit, the method comprising:

[0005] Detect the temperature of the terminal device;

[0006] The charging current of the battery is determined based on the temperature of the terminal device;

[0007] Based on the charging current, a target charging circuit is determined in the buck converter circuit and at least one of the switched capacitor circuits.

[0008] The target charging circuit is controlled to charge the battery according to the charging current.

[0009] Optionally, detecting the temperature of the terminal device includes:

[0010] Detect the temperature of multiple functional modules in the terminal device;

[0011] The temperature of the terminal device is determined based on the temperatures of the multiple functional modules.

[0012] Optionally, determining the target charging circuit in the buck converter circuit and at least one of the switched capacitor circuits based on the charging current includes:

[0013] The charging current range corresponding to the charging current is determined. The charging current range includes a first current range, a second current range, and a third current range. The minimum current value of the first current range is greater than the maximum current value of the second current range, and the minimum current value of the second current range is greater than the maximum current value of the third current range.

[0014] If the charging current range corresponding to the charging current is the first current range, the target charging circuit is determined to be the buck converter circuit and at least one of the switched capacitor circuits.

[0015] If the charging current range corresponding to the charging current is the second current range, a target functional module that meets the preset temperature conditions is determined among the multiple functional modules, and the target charging circuit is determined according to the target functional module.

[0016] If the charging current range corresponding to the charging current is the third current range, the target charging circuit is determined to be the buck converter circuit.

[0017] Optionally, determining the target charging circuit based on the target functional module includes:

[0018] Based on the positions of the target functional module and the switched capacitor circuit, a target switched capacitor circuit that satisfies a preset distribution relationship with the target functional module is determined;

[0019] The buck converter circuit and the target switched capacitor circuit are used as the target charging circuit.

[0020] Optionally, determining the target charging circuit in the buck converter circuit and at least one of the switched capacitor circuits based on the charging current includes:

[0021] The charging current range corresponding to the charging current is determined. The charging current range includes a first current range, a second current range, and a third current range. The minimum current value of the first current range is greater than the maximum current value of the second current range, and the minimum current value of the second current range is greater than the maximum current value of the third current range.

[0022] If the charging current range corresponding to the charging current is the first current range, the target charging circuit is determined to be the buck converter circuit and at least one of the switched capacitor circuits.

[0023] If the charging current range corresponding to the charging current is the second current range, the target charging circuit is determined according to the target application running on the terminal device.

[0024] If the charging current range corresponding to the charging current is the third current range, the target charging circuit is determined to be the buck converter circuit.

[0025] Optionally, determining the target charging circuit based on a target application running on the terminal device includes:

[0026] Based on the target application, determine the target functional modules on the terminal device;

[0027] Based on the positions of the target functional module and the switched capacitor circuit, a target switched capacitor circuit that satisfies a preset distribution relationship with the target functional module is determined;

[0028] The buck converter circuit and the target switched capacitor circuit are used as the target charging circuit.

[0029] Optionally, the method further includes:

[0030] Based on the charging current and the charging current range corresponding to the charging current, the branch charging current corresponding to each target charging circuit is determined, and the sum of the charging currents of each branch is the charging current.

[0031] The control of the target charging circuit to charge the battery according to the charging current includes:

[0032] Each of the target charging circuits is controlled to charge the battery according to the corresponding branch charging current.

[0033] According to a second aspect of the present disclosure, a charging control device is provided, applied to a terminal device, the terminal device being provided with a battery, a buck converter circuit, and at least one switched capacitor circuit, the device comprising:

[0034] The detection module is configured to detect the temperature of the terminal device;

[0035] The first determining module is configured to determine the charging current of the battery based on the temperature of the terminal device;

[0036] The second determining module is configured to determine a target charging circuit in the buck converter circuit and at least one of the switched capacitor circuits based on the charging current.

[0037] The control module is configured to control the target charging circuit to charge the battery according to the charging current.

[0038] Optionally, the detection module is configured as follows:

[0039] Detect the temperature of multiple functional modules in the terminal device;

[0040] The temperature of the terminal device is determined based on the temperatures of the multiple functional modules.

[0041] Optionally, the second determining module is configured to:

[0042] The charging current range corresponding to the charging current is determined. The charging current range includes a first current range, a second current range, and a third current range. The minimum current value of the first current range is greater than the maximum current value of the second current range, and the minimum current value of the second current range is greater than the maximum current value of the third current range.

[0043] If the charging current range corresponding to the charging current is the first current range, the target charging circuit is determined to be the buck converter circuit and at least one of the switched capacitor circuits.

[0044] If the charging current range corresponding to the charging current is the second current range, a target functional module that meets the preset temperature conditions is determined among the multiple functional modules, and the target charging circuit is determined according to the target functional module.

[0045] If the charging current range corresponding to the charging current is the third current range, the target charging circuit is determined to be the buck converter circuit.

[0046] Optionally, the second determining module is configured to:

[0047] Based on the positions of the target functional module and the switched capacitor circuit, a target switched capacitor circuit that satisfies a preset distribution relationship with the target functional module is determined;

[0048] The buck converter circuit and the target switched capacitor circuit are used as the target charging circuit.

[0049] Optionally, the second determining module is configured to:

[0050] The charging current range corresponding to the charging current is determined. The charging current range includes a first current range, a second current range, and a third current range. The minimum current value of the first current range is greater than the maximum current value of the second current range, and the minimum current value of the second current range is greater than the maximum current value of the third current range.

[0051] If the charging current range corresponding to the charging current is the first current range, the target charging circuit is determined to be the buck converter circuit and at least one of the switched capacitor circuits.

[0052] If the charging current range corresponding to the charging current is the second current range, the target charging circuit is determined according to the target application running on the terminal device.

[0053] If the charging current range corresponding to the charging current is the third current range, the target charging circuit is determined to be the buck converter circuit.

[0054] Optionally, the second determining module is configured to:

[0055] Based on the target application, determine the target functional modules on the terminal device;

[0056] Based on the positions of the target functional module and the switched capacitor circuit, a target switched capacitor circuit that satisfies a preset distribution relationship with the target functional module is determined;

[0057] The buck converter circuit and the target switched capacitor circuit are used as the target charging circuit.

[0058] Optionally, the first determining module is further configured to:

[0059] Based on the charging current and the charging current range corresponding to the charging current, the branch charging current corresponding to each target charging circuit is determined, and the sum of the charging currents of each branch is the charging current.

[0060] The control module is configured as follows:

[0061] Each of the target charging circuits is controlled to charge the battery according to the corresponding branch charging current.

[0062] According to a third aspect of the present disclosure, a charging control device is provided, applied to a terminal device, the terminal device being provided with a battery, a buck converter circuit, and at least one switched capacitor circuit, the device comprising:

[0063] processor;

[0064] Memory used to store processor-executable instructions;

[0065] The processor is configured as follows:

[0066] Detect the temperature of the terminal device;

[0067] The charging current of the battery is determined based on the temperature of the terminal device;

[0068] Based on the charging current, a target charging circuit is determined in the buck converter circuit and at least one of the switched capacitor circuits.

[0069] The target charging circuit is controlled to charge the battery according to the charging current.

[0070] According to a fourth aspect of the present disclosure, a computer-readable storage medium is provided that stores computer program instructions thereon, which, when executed by a processor, implement the steps of the charging control method provided in the first aspect of the present disclosure.

[0071] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects:

[0072] This disclosure applies to a terminal device, which includes a battery, a buck converter circuit, and at least one switched capacitor circuit. First, the temperature of the terminal device is detected, and based on this temperature, the battery charging current is determined. Then, based on the charging current, a target charging circuit is selected from the buck converter circuit and the at least one switched capacitor circuit, and the target charging circuit is controlled to charge the battery according to the charging current. This disclosure determines the charging current based on the terminal device's temperature and uses this to select the target charging circuit for charging the battery, thereby improving battery charging efficiency while avoiding overheating of the terminal device.

[0073] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0074] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0075] Figure 1 This is a flowchart illustrating a charging control method according to an exemplary embodiment;

[0076] Figure 2 It is based on Figure 1 An embodiment shows a structural diagram of a charging circuit;

[0077] Figure 3 This is a flowchart illustrating another charging control method according to an exemplary embodiment;

[0078] Figure 4 This is a flowchart illustrating another charging control method according to an exemplary embodiment;

[0079] Figure 5 This is a flowchart illustrating another charging control method according to an exemplary embodiment;

[0080] Figure 6 It is based on Figure 5 An embodiment shows a schematic diagram of the distribution of functional modules;

[0081] Figure 7 This is a flowchart illustrating another charging control method according to an exemplary embodiment;

[0082] Figure 8 This is a flowchart illustrating another charging control method according to an exemplary embodiment;

[0083] Figure 9 This is a flowchart illustrating another charging control method according to an exemplary embodiment;

[0084] Figure 10 This is a block diagram illustrating a charging control device according to an exemplary embodiment;

[0085] Figure 11 This is a block diagram illustrating an apparatus according to an exemplary embodiment. Detailed Implementation

[0086] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0087] Figure 1 This is a flowchart illustrating a charging control method according to an exemplary embodiment, such as... Figure 1 As shown, this method is applied to a terminal device, which includes a battery, a buck converter circuit, and at least one switched capacitor circuit. The method includes the following steps:

[0088] In step S101, the temperature of the terminal device is detected.

[0089] For example, this disclosure can be applied to terminal devices, which may include, but are not limited to, mobile terminals such as mobile phones, laptops, digital radio receivers, PDAs (personal digital assistants), PADs (tablet computers), PMPs (portable multimedia players), and in-vehicle terminals (e.g., in-vehicle navigation terminals), as well as fixed terminals such as digital TVs and desktop computers. The terminal device includes a battery, a step-down converter circuit, and at least one switched capacitor circuit, such as... Figure 2As shown, a buck converter circuit and / or at least one switched capacitor circuit constitute a charging circuit for charging the battery. The buck converter circuit can be a BUCK buck circuit from a PMIC (Power Management Integrated Circuit). The switched capacitor circuit can be a charge pump and can contain multiple switches and multiple capacitors, achieving battery charging by rapidly switching multiple switches. Because the switched capacitor circuit has lower losses than the buck converter circuit, its charging efficiency is often higher. Furthermore, when the same current passes through both the switched capacitor circuit and the buck converter circuit, the switched capacitor circuit generates less heat.

[0090] Firstly, the temperature of the terminal device can be detected using a temperature sensor installed on the device. Specifically, a single temperature sensor can be used, and the temperature value collected by this sensor can be taken as the temperature of the terminal device. Alternatively, multiple temperature sensors can be used to collect the temperatures of multiple functional modules within the terminal device, and the temperature of the terminal device can be determined based on the temperatures of these multiple functional modules. For example, the average temperature of the multiple functional modules can be used as the temperature of the terminal device, or the temperature of the terminal device can be determined by a weighted sum based on the temperature of each functional module and a preset proportional coefficient. This disclosure does not impose any specific limitations on this method.

[0091] In step S102, the charging current of the battery is determined based on the temperature of the terminal device.

[0092] For example, after determining the temperature of the terminal device, the battery charging current can be obtained based on the terminal device's temperature and a preset correspondence. This correspondence indicates the relationship between the terminal device's temperature and the battery's charging current. For instance, the correspondence could be a pre-fitted function showing the relationship between the terminal device's temperature and charging current; the terminal device's temperature can be substituted into this function to obtain the charging current corresponding to that temperature. Alternatively, the correspondence could be a table showing the relationship between the terminal device's temperature and charging current, obtained through extensive experimentation; after obtaining the terminal device's temperature, the corresponding charging current can be found in this table. Within the battery's optimal operating range, the terminal device's temperature and charging current can be negatively correlated; that is, the higher the terminal device's temperature, the lower the charging current, and vice versa.

[0093] In step S103, a target charging circuit is determined in the buck converter circuit and at least one switched capacitor circuit based on the charging current.

[0094] In step S104, the target charging circuit is controlled to charge the battery according to the charging current.

[0095] For example, based on the charging current, a corresponding target charging circuit can be determined from a buck converter circuit and at least one switched capacitor circuit. The target charging circuit can be one or more, and this disclosure does not specifically limit this. In one implementation, multiple charging current ranges and a target charging circuit corresponding to each charging current range can be pre-defined. By determining the charging current range corresponding to the charging current, the target charging circuit can be determined. For example, three charging current ranges can be set: the target charging circuit corresponding to the first current range is a buck converter circuit; the target charging circuit corresponding to the second current range is a buck converter circuit and a switched capacitor circuit; and the target charging circuit corresponding to the third current range is a buck converter circuit and all switched capacitor circuits. When the charging current is in the first current range, the target charging circuit can be determined to be a buck converter circuit; when the charging current is in the second current range, the target charging circuit can be determined to be a buck converter circuit and a switched capacitor circuit; and when the charging current is in the third current range, the target charging circuit can be determined to be a buck converter circuit and all switched capacitor circuits. In another implementation, a current threshold can be preset. When the charging current exceeds the threshold, a target charging circuit that satisfies the preset distribution relationship can be determined based on the charging current and the temperature of each functional module in the terminal device. When the charging current is less than the threshold, a buck converter circuit can be used as the target charging circuit.

[0096] Furthermore, the target charging circuit can be controlled to charge the battery according to the charging current. Specifically, when there is one target charging circuit, the charging current can be controlled to flow through that target charging circuit to charge the battery. When there are multiple target charging circuits, the charging current can be allocated to each target charging circuit according to a preset allocation rule, so that each target charging circuit charges the battery according to its allocated charging current. In this way, by determining the battery charging current based on the temperature of the terminal device, and further determining the appropriate target charging circuit to charge the battery based on the magnitude of the charging current in the buck converter circuit and at least one switched capacitor circuit, the charging efficiency of the battery can be improved while ensuring that the temperature of the terminal device does not become too high.

[0097] In summary, this disclosure applies to terminal devices, which include a battery, a buck converter circuit, and at least one switched capacitor circuit. First, the temperature of the terminal device is detected, and based on this temperature, the battery charging current is determined. Then, based on the charging current, a target charging circuit is selected from the buck converter circuit and the at least one switched capacitor circuit, and the target charging circuit is controlled to charge the battery according to the charging current. This disclosure determines the charging current based on the terminal device's temperature and uses this to select the target charging circuit for charging the battery, thereby improving battery charging efficiency while avoiding overheating of the terminal device.

[0098] Figure 3 This is a flowchart illustrating another charging control method according to an exemplary embodiment, such as... Figure 3 As shown, step S101 can be achieved through the following steps:

[0099] In step S1011, the temperature of multiple functional modules in the terminal device is detected.

[0100] In step S1012, the temperature of the terminal device is determined based on the temperatures of multiple functional modules.

[0101] Accordingly, one implementation of step S103 can be:

[0102] Based on the temperature and charging current of multiple functional modules, the target charging circuit is determined in a buck converter circuit and at least one switched capacitor circuit.

[0103] For example, a terminal device includes multiple functional modules, and the temperature of the terminal device can be determined based on the temperatures of these modules. Specifically, a temperature sensor can be pre-set for each functional module in the terminal device to monitor its temperature. The temperature sensor can be an NTC (Negative Temperature Coefficient) sensor, and the functional modules can be, for example, a CPU (Central Processing Unit), radio frequency devices, a camera, a charging IC (Integrated Circuit), or a battery. For instance, a CPU temperature sensor can monitor the CPU module's temperature, an RF temperature sensor can monitor the radio frequency device's temperature, a camera temperature sensor can detect the camera's temperature, a charger temperature sensor can monitor the charging IC's temperature, and a batt temperature sensor can monitor the battery's temperature. The temperature of each functional module can be obtained from its corresponding temperature sensor, and then the sum of the products of each module's temperature and its corresponding scaling factor is taken as the terminal device's temperature. It should be noted that the scaling factor for each functional module can be pre-set through experimentation and analysis, and the sum of the scaling factors for each functional module is 1. Taking a terminal device with functional modules including a CPU, radio frequency devices, a camera, and a charging IC as an example, the temperature of the terminal device can be obtained using Formula 1.

[0104] T 终端设备 =T cPU *k1+T RF *k2+T Cam *k3+T Changer *k4 (Formula 1)

[0105] Among them, T 终端设备 T represents the temperature of the terminal device. CPU T represents the temperature of the CPU. RF T represents the temperature of the radio frequency device. Cam For the temperature of the camera, T Changer The temperature of the charging IC is given. k1 is the proportional coefficient corresponding to the CPU, k2 is the proportional coefficient corresponding to the RF device, k3 is the proportional coefficient corresponding to the camera, and k4 is the proportional coefficient corresponding to the charging IC. k1+k2+k3+k4=1.

[0106] Figure 4 This is a flowchart illustrating another charging control method according to an exemplary embodiment, such as... Figure 4 As shown, step S103 can be achieved through the following steps:

[0107] In step S1031, the charging current range corresponding to the charging current is determined. The charging current range includes a first current range, a second current range, and a third current range. The minimum current value of the first current range is greater than the maximum current value of the second current range, and the minimum current value of the second current range is greater than the maximum current value of the third current range.

[0108] In step S1032, if the charging current range corresponding to the charging current is the first current range, the target charging circuit is determined to be a buck converter circuit and at least one switched capacitor circuit.

[0109] In step S1033, if the charging current range corresponding to the charging current is the second current range, a target functional module that meets the preset temperature conditions is determined among multiple functional modules, and a target charging circuit is determined based on the target functional module.

[0110] In step S1034, if the charging current range corresponding to the charging current is the third current range, the target charging circuit is determined to be a buck converter circuit.

[0111] For example, multiple charging current ranges can be pre-defined, and the target charging circuit can be determined based on the charging current range in which the charging current falls. Specifically, the charging current ranges can include: a first current range, a second current range, and a third current range. The minimum current value in the first current range is greater than the maximum current value in the second current range, and the minimum current value in the second current range is greater than the maximum current value in the third current range. That is, the current values ​​of the charging current ranges, from largest to smallest, are the first current range, the second current range, and the third current range. For example, the first current range could be (10, 22] A, the second current range could be (4, 10] A, and the third current range could be (1, 4] A.

[0112] If the charging current corresponds to the first current range, it indicates a relatively large charging current. Therefore, the target charging circuits can be identified as the buck converter circuit and all the switched capacitor circuits in the terminal device. Since the charging efficiency of the switched capacitor circuit is greater than that of the buck converter circuit, a smaller charging current (e.g., 100mA) can be allocated to the buck converter circuit to charge the battery, maintaining the charging status display. The remaining charging current is then evenly distributed to each switched capacitor circuit, allowing a larger charging current to flow through the more efficient switched capacitor circuits to charge the battery. This reduces battery charging losses and thus reduces the heat generated by the charging circuit. While ensuring the terminal device's temperature doesn't get too high, the charging efficiency of the battery is improved. For example, with three switched capacitor circuits, a charging current of 15A, and a first current range of (10, 22]A, a charging current of 300mA can be allocated to the buck converter circuit, and the remaining 14.7A charging current is evenly distributed among the three switched capacitor circuits, resulting in a charging current of 4.9A through each switched capacitor circuit.

[0113] If the charging current range corresponding to the charging current is the second current range, then a target functional module that meets the preset temperature condition can be determined among multiple functional modules. Based on the location of the target functional module, a target charging circuit that satisfies a preset distribution relationship with the target functional module can be determined. The target functional module that meets the preset temperature condition can be the functional module with the highest temperature among the functional modules, or it can be one or more functional modules with a temperature greater than a preset temperature threshold; this disclosure does not specifically limit this.

[0114] If the charging current corresponds to the third current range, it indicates that the current charging current is relatively small. Since the output voltage of a switched capacitor circuit is unstable under low current conditions, and the buck converter circuit experiences less loss and generates less heat when a small current passes through, the target charging circuit can be determined to be a buck converter circuit. Charging the battery through this buck converter circuit improves the charging efficiency and stability of the battery while ensuring that the temperature of the terminal device does not become excessively high.

[0115] Figure 5 This is a flowchart illustrating another charging control method according to an exemplary embodiment, such as... Figure 5 As shown, step S1033 can be achieved through the following steps:

[0116] In step S1033a, the target switched capacitor circuit that satisfies the preset distribution relationship with the target functional module is determined based on the positions of the target functional module and the switched capacitor circuit.

[0117] In step S1033b, the buck converter circuit and the target switched capacitor circuit are used as the target charging circuit.

[0118] For example, if the charging current corresponds to the second current range, after determining the target functional module, the target switched capacitor circuit can be determined based on the positions of the target functional module and the switched capacitor circuit. The target switched capacitor circuit and the target functional module can satisfy a preset distribution relationship, thereby enabling the terminal device to dissipate heat evenly and allowing the heat dissipation device to quickly remove heat. The heat dissipation device can be, for example, a VC (Vapor Chamber) liquid cooling device. The preset distribution relationship can be that the target switched capacitor circuit is the switched capacitor circuit farthest from the target functional module. Alternatively, the preset distribution relationship can be that the target switched capacitor circuit and the target functional module are symmetrically distributed. Another preset distribution relationship can be that the target switched capacitor circuit and the target functional module are triangularly distributed. This disclosure does not specifically limit this.

[0119] For example, the locations of functional modules and switched capacitor circuits are as follows: Figure 6 As shown, this includes two switched-capacitor circuits. When the target functional module is a camera (i.e., the camera's temperature is high), switched-capacitor circuit 2, which is farther from the camera, can be used as the target switched-capacitor circuit. When the target functional module is both a camera and an RF device (i.e., both the camera and the RF device have high temperatures), switched-capacitor circuits 1 and 2 can be used as the target switched-capacitor circuits, resulting in a symmetrical distribution of the camera, RF device, switched-capacitor circuit 1, and switched-capacitor circuit 2. When the target functional module is a CPU (i.e., the CPU's temperature is high), switched-capacitor circuits 1 and 2 can be used as the target switched-capacitor circuits, resulting in a triangular distribution of the CPU, switched-capacitor circuit 1, and switched-capacitor circuit 2.

[0120] Furthermore, the buck converter circuit and the target switched capacitor circuit can be used as the target charging circuit. A smaller charging current (e.g., 100mA) can be allocated to the buck converter circuit to charge the battery, maintaining the charging status display. The remaining charging current is then evenly distributed to the target switched capacitor circuits. By charging the battery through the more efficient switched capacitor circuits, charging losses are reduced, thereby reducing the heat generated by the charging circuit. This improves battery charging efficiency while ensuring the terminal device's temperature does not become too high. For example, using two target switched capacitor circuits with a charging current of 8A and a second current range of (4, 10]A, a charging current of 200mA can be allocated to the buck converter circuit, and the remaining 7.8A charging current can be evenly distributed between the two target switched capacitor circuits, resulting in a charging current of 3.9A for each target switched capacitor circuit.

[0121] Figure 7 This is a flowchart illustrating another charging control method according to an exemplary embodiment, such as... Figure 7 As shown, step S103 can also be achieved through the following steps:

[0122] In step S1035, the charging current range corresponding to the charging current is determined. The charging current range includes a first current range, a second current range, and a third current range. The minimum current value of the first current range is greater than the maximum current value of the second current range, and the minimum current value of the second current range is greater than the maximum current value of the third current range.

[0123] In step S1036, if the charging current range corresponding to the charging current is the first current range, the target charging circuit is determined to be a buck converter circuit and at least one switched capacitor circuit.

[0124] In step S1037, if the charging current range corresponding to the charging current is the second current range, the target charging circuit is determined according to the target application running on the terminal device.

[0125] In step S1038, if the charging current range corresponding to the charging current is the third current range, the target charging circuit is determined to be a buck converter circuit.

[0126] For example, the charging current can be pre-divided into multiple charging current ranges, and then the target charging circuit can be determined based on the charging current range in which the charging current falls. Specifically, the charging current ranges can include: a first current range, a second current range, and a third current range. The minimum current value in the first current range is greater than the maximum current value in the second current range, and the minimum current value in the second current range is greater than the maximum current value in the third current range. That is, the current values ​​of the charging current ranges, from largest to smallest, are the first current range, the second current range, and the third current range. For example, the first current range could be (10, 22] A, the second current range could be (4, 10] A, and the third current range could be (1, 4] A.

[0127] If the charging current corresponds to the first current range, it indicates that the current charging current is relatively large. Therefore, the target charging circuits can be identified as the buck converter circuit and all switched-capacitor circuits in the terminal device. Since the charging efficiency of the switched-capacitor circuit is greater than that of the buck converter circuit, a smaller charging current (e.g., 100mA) can be allocated to the buck converter circuit to charge the battery, maintaining the charging status display. The remaining charging current is then evenly distributed to each switched-capacitor circuit, allowing a larger charging current to flow through the more efficient switched-capacitor circuits to charge the battery. This reduces battery charging losses and thus reduces the heat generated by the charging circuit. While ensuring the terminal device temperature does not become excessively high, this improves battery charging efficiency.

[0128] If the charging current corresponds to the second current range, then the application package name corresponding to the target application running on the terminal device can be obtained first, and the usage scenario corresponding to the application package name can be determined. Then, the target functional module being used can be determined based on the usage scenario. Since the temperature of the running target functional module is relatively high, the target charging circuit that meets the preset distribution relationship with the target functional module can be determined to ensure that the terminal device can dissipate heat evenly.

[0129] If the charging current corresponds to the third current range, it indicates that the current charging current is relatively small. Since the output voltage of the switched capacitor circuit is unstable when the current is small, and the buck converter circuit has less loss and generates less heat when a small current passes through, the target charging circuit can be determined to be a buck converter circuit. By charging the battery through the buck converter circuit, the charging efficiency and stability of the battery are improved while ensuring that the temperature of the terminal device does not get too high.

[0130] Figure 8 This is a flowchart illustrating another charging control method according to an exemplary embodiment, such as... Figure 8 As shown, step S1037 can be achieved through the following steps:

[0131] In step S1037a, the target functional module on the terminal device is determined based on the target application.

[0132] In step S1037b, the target switched capacitor circuit that satisfies the preset distribution relationship with the target functional module is determined based on the positions of the target functional module and the switched capacitor circuit.

[0133] In step S1037c, the buck converter circuit and the target switched capacitor circuit are used as the target charging circuit.

[0134] For example, if the charging current range corresponds to the second current range, after determining the target functional module, the target functional module on the terminal device can be determined based on the target application. Specifically, the application package name corresponding to the application running on the terminal device can be obtained first, and the user's usage scenario can be obtained based on the application package name. Then, the target functional module corresponding to the usage scenario can be determined. Taking the application package name of the game application installed on the terminal device as com.game and the application package name of the camera application as com.camera as an example, based on com.game, the current usage scenario can be identified as a game scenario, and the target functional module corresponding to the game scenario can be determined as the CPU. Based on com.camera, the current usage scenario can be identified as a shooting scenario, and the target functional module corresponding to the shooting scenario can be determined as the camera.

[0135] Subsequently, the target switched capacitor circuit can be determined based on the location of the target functional module and the switched capacitor circuit. The target switched capacitor circuit and the target functional module can satisfy a preset distribution relationship, thereby enabling uniform heat dissipation in the terminal device and allowing the heat dissipation device to quickly remove heat. The preset distribution relationship can be that the target switched capacitor circuit is the switched capacitor circuit farthest from the target functional module. Alternatively, the preset relationship can be that the target switched capacitor circuit and the target functional module are symmetrically distributed. Another preset distribution relationship can be that the target switched capacitor circuit and the target functional module are triangularly distributed. This disclosure does not specifically limit this.

[0136] For example, the locations of functional modules and switched capacitor circuits are as follows: Figure 5 As shown, when the target functional module is a camera (i.e., the camera's temperature is high), the switched capacitor circuit 2, which is farther away from the camera, can be used as the target switched capacitor. When the target functional module is both a camera and an RF device (i.e., both the camera and the RF device have high temperatures), switched capacitor circuits 1 and 2 can be used as the target switched capacitor circuits, making the camera, RF device, switched capacitor circuit 1, and switched capacitor circuit 2 symmetrically distributed. When the target functional module is a CPU (i.e., the CPU's temperature is high), switched capacitor circuits 1 and 2 can be used as the target switched capacitor circuits, making the CPU, switched capacitor circuit 1, and switched capacitor circuit 2 triangularly distributed.

[0137] Furthermore, the buck converter circuit and the target switched capacitor circuit can be used as the target charging circuit. Specifically, a smaller charging current (e.g., 100mA) is allocated to the buck converter circuit to charge the battery to maintain the charging status display, and the remaining charging current is evenly distributed to the target switched capacitor circuit. By charging the battery through the more efficient switched capacitor circuit, the charging loss of the battery is reduced, thereby reducing the heat generated by the charging circuit. This improves the charging efficiency of the battery while ensuring that the temperature of the terminal device does not get too high.

[0138] Figure 9 This is a flowchart illustrating another charging control method according to an exemplary embodiment, such as... Figure 9 As shown, the method also includes:

[0139] In step S105, based on the charging current and the charging current range corresponding to the charging current, the branch charging current corresponding to each target charging circuit is determined, and the sum of the charging currents of each branch is the charging current.

[0140] Accordingly, one implementation of step S104 can be:

[0141] Each target charging circuit is controlled to charge the battery according to the corresponding branch charging current.

[0142] For example, if there are multiple target charging circuits, after determining the charging current, the branch charging current for each target charging circuit can be determined based on the charging current and the corresponding charging current range. Each target charging circuit can then be controlled to charge the battery according to its corresponding branch charging current. The sum of the charging currents of each branch is the total charging current.

[0143] Specifically, if the charging current corresponds to a first current range, and the target charging circuit is a buck converter circuit and at least one switched capacitor circuit, then a preset branch charging current can be allocated to the buck converter circuit. This preset branch charging current is relatively small, for example, 100mA, used to maintain the charging status display. The remaining charging current is then evenly distributed to each switched capacitor circuit as a branch charging current, controlling the buck converter circuit and each switched capacitor circuit to charge the battery according to their respective branch charging currents. If the charging current corresponds to a second current range, and the target charging circuit is a buck converter circuit and a target switched capacitor circuit, then a preset branch charging current can be allocated to the buck converter circuit, and the remaining charging current is evenly distributed to each target switched capacitor circuit as a branch charging current, controlling the buck converter circuit and each target switched capacitor circuit to charge the battery according to their respective branch charging currents. If the charging current range corresponding to the charging current is the third current range, and the corresponding target charging circuit is a buck converter circuit, then the entire charging current can be allocated to the buck converter circuit. That is, the charging current of the branch corresponding to the buck converter circuit is the charging current, so as to control the buck converter circuit to charge the battery according to the charging current.

[0144] In summary, this disclosure applies to terminal devices, which include a battery, a buck converter circuit, and at least one switched capacitor circuit. First, the temperature of the terminal device is detected, and based on this temperature, the battery charging current is determined. Then, based on the charging current, a target charging circuit is selected from the buck converter circuit and the at least one switched capacitor circuit, and the target charging circuit is controlled to charge the battery according to the charging current. This disclosure determines the charging current based on the terminal device's temperature and uses this to select the target charging circuit for charging the battery, thereby improving battery charging efficiency while avoiding overheating of the terminal device.

[0145] Figure 10 This is a block diagram illustrating a charging control device according to an exemplary embodiment, such as... Figure 10 As shown, the device 200 is applied to a terminal device, which includes a battery, a step-down converter circuit, and at least one switched capacitor circuit.

[0146] The detection module 201 is configured to detect the temperature of the terminal device.

[0147] The first determining module 202 is configured to determine the charging current of the battery based on the temperature of the terminal device.

[0148] The second determining module 203 is configured to determine the target charging circuit in a buck converter circuit and at least one switched capacitor circuit based on the charging current.

[0149] The control module 204 is configured to control the target charging circuit to charge the battery according to the charging current.

[0150] In one application scenario, the detection module 201 is configured as follows:

[0151] The temperature of multiple functional modules in the detection terminal device is measured.

[0152] The temperature of the terminal device is determined based on the temperatures of multiple functional modules.

[0153] The second determining module 203 is configured as follows:

[0154] Based on the temperature and charging current of multiple functional modules, the target charging circuit is determined in a buck converter circuit and at least one switched capacitor circuit.

[0155] In another application scenario, the second determining module 203 is configured as follows:

[0156] The charging current range corresponding to the charging current is determined. The charging current range includes: a first current range, a second current range, and a third current range. The minimum current value of the first current range is greater than the maximum current value of the second current range, and the minimum current value of the second current range is greater than the maximum current value of the third current range.

[0157] If the charging current range corresponding to the charging current is the first current range, the target charging circuit is determined to be a buck converter circuit and at least one switched capacitor circuit.

[0158] If the charging current range corresponding to the charging current is the second current range, determine the target functional module that meets the preset temperature conditions among multiple functional modules, and determine the target charging circuit based on the target functional module.

[0159] If the charging current range corresponding to the charging current is the third current range, the target charging circuit is determined to be a buck converter circuit.

[0160] In another application scenario, the second determining module 203 is configured as follows:

[0161] Based on the location of the target functional module and the switched capacitor circuit, determine the target switched capacitor circuit that satisfies the preset distribution relationship with the target functional module.

[0162] The buck converter circuit and the target switched capacitor circuit are used as the target charging circuit.

[0163] In another application scenario, the second determining module 203 is configured as follows:

[0164] The charging current range corresponding to the charging current is determined. The charging current range includes: a first current range, a second current range, and a third current range. The minimum current value of the first current range is greater than the maximum current value of the second current range, and the minimum current value of the second current range is greater than the maximum current value of the third current range.

[0165] If the charging current range corresponding to the charging current is the first current range, the target charging circuit is determined to be a buck converter circuit and at least one switched capacitor circuit.

[0166] If the charging current range corresponding to the charging current is the second current range, the target charging circuit is determined based on the target application running on the terminal device.

[0167] If the charging current range corresponding to the charging current is the third current range, the target charging circuit is determined to be a buck converter circuit.

[0168] In another application scenario, the second determining module 203 is configured as follows:

[0169] Based on the target application, identify the target functional modules on the terminal device.

[0170] Based on the location of the target functional module and the switched capacitor circuit, determine the target switched capacitor circuit that satisfies the preset distribution relationship with the target functional module.

[0171] The buck converter circuit and the target switched capacitor circuit are used as the target charging circuit.

[0172] In another application scenario, the first determining module 202 is also configured as follows:

[0173] Based on the charging current and the corresponding charging current range, determine the branch charging current for each target charging circuit, and the sum of the branch charging currents is the total charging current.

[0174] Accordingly, control module 204 is configured as follows:

[0175] Each target charging circuit is controlled to charge the battery according to the corresponding branch charging current.

[0176] Regarding the apparatus in the above embodiments, the specific manner in which each module performs its operation has been described in detail in the embodiments related to the method, and will not be elaborated upon here.

[0177] In summary, this disclosure applies to terminal devices, which include a battery, a buck converter circuit, and at least one switched capacitor circuit. First, the temperature of the terminal device is detected, and based on this temperature, the battery charging current is determined. Then, based on the charging current, a target charging circuit is selected from the buck converter circuit and the at least one switched capacitor circuit, and the target charging circuit is controlled to charge the battery according to the charging current. This disclosure determines the charging current based on the terminal device's temperature and uses this to determine a suitable target charging circuit for charging the battery, thereby improving battery charging efficiency while avoiding overheating of the terminal device.

[0178] This disclosure also provides a computer-readable storage medium having stored thereon computer program instructions that, when executed by a processor, implement the steps of the charging control method provided in this disclosure.

[0179] Figure 11 A block diagram illustrating a charging control device 300 according to an exemplary embodiment is shown. For example, device 300 may be a mobile phone, computer, digital broadcasting terminal, messaging device, game console, tablet device, medical device, fitness equipment, personal digital assistant, etc.

[0180] Reference Figure 11 The device 300 may include one or more of the following components: a processing component 302, a memory 304, a power component 306, a multimedia component 308, an audio component 310, an input / output (I / O) interface 312, a sensor component 314, and a communication component 316.

[0181] Processing component 302 typically controls the overall operation of device 300, such as operations associated with display, telephone calls, data communication, camera operation, and recording. Processing component 302 may include one or more processors 320 to execute instructions to complete all or part of the steps of the charging control method described above. Furthermore, processing component 302 may include one or more modules to facilitate interaction between processing component 302 and other components. For example, processing component 302 may include a multimedia module to facilitate interaction between multimedia component 308 and processing component 302.

[0182] Memory 304 is configured to store various types of data to support the operation of device 300. Examples of such data include instructions for any application or method operating on device 300, contact data, phonebook data, messages, pictures, videos, etc. Memory 304 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk.

[0183] The power supply component 306 provides power to the various components of the device 300. The power supply component 306 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power to the device 300.

[0184] Multimedia component 308 includes a screen that provides an output interface between the device 300 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touchscreen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensors may sense not only the boundaries of the touch or swipe action but also the duration and pressure associated with the touch or swipe operation. In some embodiments, multimedia component 308 includes a front-facing camera and / or a rear-facing camera. When the device 300 is in an operating mode, such as a shooting mode or a video mode, the front-facing camera and / or the rear-facing camera may receive external multimedia data. Each front-facing camera and rear-facing camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

[0185] Audio component 310 is configured to output and / or input audio signals. For example, audio component 310 includes a microphone (MIC) configured to receive external audio signals when device 300 is in an operating mode, such as call mode, recording mode, and voice recognition mode. The received audio signals may be further stored in memory 304 or transmitted via communication component 316. In some embodiments, audio component 310 also includes a speaker for outputting audio signals.

[0186] I / O interface 312 provides an interface between processing component 302 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to, home buttons, volume buttons, power buttons, and lock buttons.

[0187] Sensor assembly 314 includes one or more sensors for providing status assessments of various aspects of device 300. For example, sensor assembly 314 may detect the on / off state of device 300, the relative positioning of components such as the display and keypad of device 300, changes in the position of device 300 or a component of device 300, the presence or absence of user contact with device 300, the orientation or acceleration / deceleration of device 300, and temperature changes of device 300. Sensor assembly 314 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. Sensor assembly 314 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, sensor assembly 314 may also include an accelerometer, a gyroscope, a magnetometer, a pressure sensor, or a temperature sensor.

[0188] Communication component 316 is configured to facilitate wired or wireless communication between device 300 and other devices. Device 300 can access wireless networks based on communication standards, such as WiFi, 2G, or 3G, or combinations thereof. In one exemplary embodiment, communication component 316 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, communication component 316 also includes a near-field communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on radio frequency identification (RFID) technology, Infrared Data Association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0189] In an exemplary embodiment, the device 300 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the above-described charging control method.

[0190] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 304 including instructions, which can be executed by a processor 320 of the device 300 to complete the charging control method described above. For example, the non-transitory computer-readable storage medium may be a ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, and optical data storage device, etc.

[0191] In another exemplary embodiment, a computer program product is also provided, the computer program product comprising a computer program executable by a programmable device, the computer program having a code portion for performing the charging control method described above when executed by the programmable device.

[0192] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of this disclosure. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0193] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A charging control method, characterized in that, Applied to a terminal device, the terminal device being provided with a battery, a step-down converter circuit, and at least one switched capacitor circuit, the method includes: Detect the temperature of the terminal device; The charging current of the battery is determined based on the temperature of the terminal device; Based on the charging current, a target charging circuit is determined in the buck converter circuit and at least one of the switched capacitor circuits. Control the target charging circuit to charge the battery according to the charging current; The step of determining the target charging circuit in the buck converter circuit and at least one of the switched capacitor circuits based on the charging current includes: The charging current range corresponding to the charging current is determined. The charging current range includes a first current range, a second current range, and a third current range. The minimum current value of the first current range is greater than the maximum current value of the second current range, and the minimum current value of the second current range is greater than the maximum current value of the third current range. If the charging current range corresponding to the charging current is the first current range, the target charging circuit is determined to be the buck converter circuit and at least one of the switched capacitor circuits. If the charging current range corresponding to the charging current is the second current range, the target charging circuit is determined according to the target application running on the terminal device. If the charging current range corresponding to the charging current is the third current range, the target charging circuit is determined to be the buck converter circuit.

2. The method according to claim 1, characterized in that, The detection of the temperature of the terminal device includes: Detect the temperature of multiple functional modules in the terminal device; The temperature of the terminal device is determined based on the temperatures of the multiple functional modules.

3. The method according to claim 2, characterized in that, The step of determining the target charging circuit in the buck converter circuit and at least one of the switched capacitor circuits based on the charging current includes: The charging current range corresponding to the charging current is determined. The charging current range includes a first current range, a second current range, and a third current range. The minimum current value of the first current range is greater than the maximum current value of the second current range, and the minimum current value of the second current range is greater than the maximum current value of the third current range. If the charging current range corresponding to the charging current is the first current range, the target charging circuit is determined to be the buck converter circuit and at least one of the switched capacitor circuits. If the charging current range corresponding to the charging current is the second current range, a target functional module that meets the preset temperature conditions is determined among the multiple functional modules, and the target charging circuit is determined according to the target functional module. If the charging current range corresponding to the charging current is the third current range, the target charging circuit is determined to be the buck converter circuit.

4. The method according to claim 3, characterized in that, Determining the target charging circuit based on the target functional module includes: Based on the positions of the target functional module and the switched capacitor circuit, a target switched capacitor circuit that satisfies a preset distribution relationship with the target functional module is determined; The buck converter circuit and the target switched capacitor circuit are used as the target charging circuit.

5. The method according to claim 1, characterized in that, Determining the target charging circuit based on the target application running on the terminal device includes: Based on the target application, determine the target functional modules on the terminal device; Based on the positions of the target functional module and the switched capacitor circuit, a target switched capacitor circuit that satisfies a preset distribution relationship with the target functional module is determined; The buck converter circuit and the target switched capacitor circuit are used as the target charging circuit.

6. The method according to claim 1, characterized in that, The method further includes: Based on the charging current and the charging current range corresponding to the charging current, the branch charging current corresponding to each target charging circuit is determined, and the sum of the charging currents of each branch is the charging current. The control of the target charging circuit to charge the battery according to the charging current includes: Each of the target charging circuits is controlled to charge the battery according to the corresponding branch charging current.

7. A charging control device, characterized in that, Applied to a terminal device, the terminal device is equipped with a battery, a step-down converter circuit, and at least one switched capacitor circuit, the device comprising: The detection module is configured to detect the temperature of the terminal device; The first determining module is configured to determine the charging current of the battery based on the temperature of the terminal device; The second determining module is configured to determine a target charging circuit in the buck converter circuit and at least one of the switched capacitor circuits based on the charging current. The control module is configured to control the target charging circuit to charge the battery according to the charging current; The second determining module is configured as follows: The charging current range corresponding to the charging current is determined. The charging current range includes a first current range, a second current range, and a third current range. The minimum current value of the first current range is greater than the maximum current value of the second current range, and the minimum current value of the second current range is greater than the maximum current value of the third current range. If the charging current range corresponding to the charging current is the first current range, the target charging circuit is determined to be the buck converter circuit and at least one of the switched capacitor circuits. If the charging current range corresponding to the charging current is the second current range, the target charging circuit is determined according to the target application running on the terminal device. If the charging current range corresponding to the charging current is the third current range, the target charging circuit is determined to be the buck converter circuit.

8. A charging control device, characterized in that, Applied to a terminal device, the terminal device is equipped with a battery, a step-down converter circuit, and at least one switched capacitor circuit, the device comprising: processor; Memory used to store processor-executable instructions; The processor is configured as follows: Detect the temperature of the terminal device; The charging current of the battery is determined based on the temperature of the terminal device; The charging current range corresponding to the charging current is determined. The charging current range includes a first current range, a second current range, and a third current range. The minimum current value of the first current range is greater than the maximum current value of the second current range, and the minimum current value of the second current range is greater than the maximum current value of the third current range. If the charging current range corresponding to the charging current is the first current range, the target charging circuit is determined to be the buck converter circuit and at least one of the switched capacitor circuits. If the charging current range corresponding to the charging current is the second current range, the target charging circuit is determined according to the target application running on the terminal device. If the charging current range corresponding to the charging current is the third current range, the target charging circuit is determined to be the buck converter circuit. The target charging circuit is controlled to charge the battery according to the charging current.

9. A computer-readable storage medium having computer program instructions stored thereon, characterized in that, When executed by a processor, the program instructions implement the steps of the method described in any one of claims 1-6.

Images