A charging device

Abstract

The application discloses a charging device, which comprises a power supply circuit, a charging circuit and a communication circuit. The charging circuit is connected to the power supply circuit. The charging circuit comprises a plurality of charging interfaces, each of which is used for connecting a charging load. The communication circuit is connected to the power supply circuit and the charging circuit, and is in communication connection with a control terminal. The charging circuit obtains charging parameters of the connected charging loads through the plurality of charging interfaces, sends the charging parameters to the control terminal through the communication circuit, and receives power distribution parameters generated by the control terminal based on the charging parameters, and distributes power to the plurality of charging interfaces connected to the charging loads based on the power distribution parameters. In this way, the application can reduce power waste and protect the charging loads.

Description

Technical Field

[0001] This application relates to the field of charging technology, and in particular to a charging device. Background Technology

[0002] Most multi-port charging devices on the market use a fixed port power method to charge the connected charging load. The power provided by the charging device to the charging load is fixed. The charging load can be a mobile phone, a laptop, or a pair of headphones. The power required by high-power devices is different from that required by low-power devices.

[0003] When using a charging device with a fixed port power, if the power required by the charging load is greater than the fixed power, the charging time will be longer. If the power required by the charging load is less than the fixed power, the fixed power will only meet the power required by the charging load, and any excess power will be wasted. Moreover, when the charging load is charging, the charging load needs to be manually disconnected from the charging interface when it is fully charged. Otherwise, continuously supplying power to the connected charging load can easily damage it. Furthermore, prolonged power supply can cause the charging load to overheat, which can also damage it. Summary of the Invention

[0004] The main technical problem addressed by this application is to provide a charging device that can reduce power waste and protect the charging load.

[0005] To address the aforementioned technical problems, this application provides a multi-port fast charging device with intelligent power allocation. This device includes a power supply circuit, a charging circuit, and a communication circuit. The charging circuit is connected to the power supply circuit and includes multiple charging ports, each used to connect to a charging load. The communication circuit connects the power supply circuit and the charging circuit and communicates with a control terminal. The charging circuit acquires charging parameters of the connected charging load through the multiple charging ports and sends these parameters to the control terminal via the communication circuit. The charging circuit also receives power allocation parameters generated by the control terminal based on the charging parameters and allocates power to the multiple charging ports connected to the charging load based on these parameters. A sensing circuit collects operating parameters of the multiple charging ports and sends these parameters to the control terminal via the communication circuit. The control terminal generates a power adjustment command based on the temperature parameter in the operating parameters of the target charging port. The charging circuit receives the power adjustment command from the control terminal via the communication circuit and adjusts the power value of the target charging port based on the command.

[0006] The power allocation parameters include power lock-in values ​​for at least some charging interfaces connected to the charging load. The charging circuit allocates power to multiple charging interfaces connected to the charging load based on the principle of average power allocation and the power lock-in values ​​of at least some charging interfaces. Based on the power lock-in values ​​of at least some charging interfaces, a corresponding power value is allocated to each of the at least some charging interfaces. Then, based on the total power value and the allocated power value, the remaining power value is determined, and based on the remaining power value, a corresponding power value is evenly allocated to the remaining charging interfaces.

[0007] Among them, the power lock value needs to meet the condition W 锁 <W 总 -n*W 门 W 锁 For power lockout value, W 总 The total power value is W. 门 This is the minimum power threshold for the interface.

[0008] When the charging circuit does not receive power allocation parameters generated by the control terminal based on the charging parameters, the charging circuit allocates power to multiple charging interfaces connected to the charging load based on the principle of power averaging. Specifically, the total power value is averaged based on the number of charging interfaces connected to the charging load to determine the corresponding first power value; when the charging power level of the target charging interface does not match the first power value, a second power value less than the first power value and corresponding to the charging power level is allocated to the target charging interface; the difference between the total power value and the power value of the target charging interface is averaged based on the number of remaining charging interfaces connected to the charging load other than the target charging interface to determine the corresponding third power value, and then the third power value is allocated to the remaining charging interfaces connected to the charging load other than the target charging interface.

[0009] The charging circuit is also used to acquire the charging voltage of the target charging load connected to the target charging interface, and send the charging voltage to the control terminal through the communication circuit, so that the control terminal can determine the corresponding full-charge power-off strategy based on the charging voltage, so as to monitor the charging status of the target charging load using the full-charge power-off strategy, and to disconnect the target charging load after it is fully charged.

[0010] The sensing circuit collects operating parameters from multiple charging ports and transmits these parameters to the control terminal via the communication circuit, enabling the control terminal to display the corresponding parameters. Operating parameters include temperature parameters. The control terminal generates power adjustment commands based on the temperature parameters. The charging circuit receives these power adjustment commands via the communication circuit and adjusts the power value of the target charging port accordingly.

[0011] The charging circuit obtains the charging time parameters from the control terminal through the communication circuit, and stops charging the target charging interface load when the charging time parameters are met; the charging time parameters are set by the control terminal based on user operation.

[0012] The beneficial effects of this application are as follows: Unlike existing technologies, the charging device provided in this application includes a power supply circuit, a charging circuit, and a communication circuit. The charging circuit includes multiple charging interfaces, each used to connect to a charging load. The communication circuit connects the power supply circuit and the charging circuit, and communicates with a control terminal. The charging circuit acquires the charging parameters of the connected charging load through the multiple charging interfaces, sends the charging parameters to the control terminal through the communication circuit, and receives power allocation parameters generated by the control terminal based on the charging parameters. Based on these power allocation parameters, the charging circuit allocates power to the multiple charging interfaces connected to the charging load. In one embodiment, the charging parameters acquired by the charging circuit of this invention clearly display parameters such as the charging voltage, charging current, and charging power of the connected target charging load. The power allocation parameters generated by the control terminal based on the charging parameters are intelligently allocated according to power allocation principles. Power allocation based on these power allocation parameters utilizes the power provided by the power supply circuit better than fixed power allocation, reducing power waste. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0014] Figure 1 This is a structural diagram of the charging device provided in this application;

[0015] Figure 2 This is a power allocation flowchart provided in this application that does not involve a control terminal;

[0016] Figure 3 This is a flowchart of power allocation with the participation of a control terminal provided in this application;

[0017] Figure 4 This is a flowchart of the power-off strategy provided in this application;

[0018] Figure 5 This is a flowchart illustrating the operating parameters of the charging interface provided in this application;

[0019] Figure 6 This is a flowchart of temperature monitoring and power adjustment provided in this application;

[0020] Figure 7 This is a flowchart of the control terminal for timed charging and power-off provided in this application. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0022] See Figure 1 , Figure 1 This is a schematic diagram of an embodiment of the charging device provided in this application. The charging device 100 includes a power supply circuit 10, a charging circuit 20, and a communication circuit 30.

[0023] In one embodiment, the power supply circuit 10 is connected to the charging circuit 20, which includes multiple charging interfaces. Each charging interface is used to connect to a charging load to charge the load. The charging interface can be a USB interface, a Type-C interface, a Lightning interface, etc., and the connected load can be a mobile phone, tablet computer, smart wearable device (such as smart glasses, smartwatches, Bluetooth headsets), etc.

[0024] Understandably, in one embodiment, the charging device 100 may also be a wireless charging device, and the plurality of charging interfaces may be contact-type wireless charging positions.

[0025] The communication circuit 30 connects the power supply circuit 10 and the charging circuit 20, and communicates with the control terminal. The charging circuit 20 acquires the charging parameters of the connected charging load through multiple charging interfaces, sends these parameters to the control terminal via the communication circuit 30, and receives power allocation parameters generated by the control terminal based on the charging parameters. Based on these power allocation parameters, the charging circuit 20 allocates power to the multiple charging interfaces connected to the charging load.

[0026] Optionally, the control terminal is generally a mobile phone, and the charging device 100 uses the communication circuit 30 to interact with the mobile phone. The communication circuit 30 can be a short-range communication circuit based on technologies such as Bluetooth, Zigbee, infrared, and RFID.

[0027] Optionally, the charging parameters of the charging load may include a charging protocol, such as a standard charging protocol or a fast charging protocol. The charging protocol specifies the requirements for certain technical parameters during the charging process, such as charging voltage, charging current, and charging power. Common charging protocols may include PD (USB Power Delivery), QC (Quick Charge), PE (PumpExpress), VOOC flash charging, SCP / FCP flash charging, FlashCharge flash charging, and MI ChargeTurbo flash charging.

[0028] The following describes how the charging circuit 20 distributes power to the charging load through two application scenarios:

[0029] The first scenario involves the absence of a control terminal:

[0030] The charging circuit 20 distributes power among multiple charging ports connected to the charging load based on the principle of power equalization, specifically including:

[0031] The charging circuit 20 distributes the total power value equally based on the number of charging interfaces connected to the charging load to determine the corresponding first power value.

[0032] When the charging power level of the target charging interface does not match the first power value, a second power value that is less than the first power value and corresponds to the charging power level is assigned to the target charging interface.

[0033] The difference between the total power value and the power value of the target charging interface is averaged based on the number of charging interfaces that are connected to the charging load other than the target charging interface, in order to determine the corresponding third power value.

[0034] The charging circuit 20 assigns a third power value to the charging interfaces that are connected to the charging load, excluding the target charging interface.

[0035] In an alternative embodiment, such as Figure 2 As shown, Figure 2 This application provides a power allocation flowchart without the participation of a control terminal. The specific implementation steps are as follows:

[0036] Step 21: Determine the number of charging ports to connect to the charging load.

[0037] Step 22: The charging circuit distributes the power evenly to the interfaces connected to the charging load according to the principle of average distribution, and the power distributed is the first power value.

[0038] Step 23: Determine whether the power level of the target charging interface matches the first power value. If they do not match, proceed to step 24; otherwise, proceed to step 27.

[0039] Step 24: Assign a power value less than the first power value and corresponding to the charging power level to the target charging port, which is the second power value.

[0040] Step 25: Calculate the difference between the total power value and the power value of the target charging port to determine the remaining power value.

[0041] Step 26: Distribute the remaining power value to the charging ports other than the target charging port according to the principle of average distribution, and the allocated power is the third power value.

[0042] Step 27: End power allocation.

[0043] For example, taking the charging device 100 as an example, two charging loads are connected to the charging circuit 20 through charging interfaces. The charging parameters of the two charging interfaces show that the total power of the two charging interfaces is 60 watts. Load one supports the PD protocol without power levels, and load two supports the QC protocol with power levels of 18 watts, 24 watts, 36 watts, and 60 watts. First, according to the principle of power equalization, a first power value of 30 watts is allocated to each of the two target charging interfaces. Then, since load two supports the charging protocol with power levels, the allocated 30 watts is compared with the power levels and it is found that it does not match any of the power values ​​in the power levels. At this time, the charging interface connected to load two is matched downward according to the power level, and the matched power is the second power value of 24 watts. The remaining 6 watts are allocated to load one. Finally, the power of the charging interfaces connected to the two loads is 36 watts and 24 watts, respectively.

[0044] The second scenario involves the involvement of a control terminal:

[0045] The power allocation parameters generated by the control terminal based on the charging parameters include the power lock-in values ​​of at least some of the charging interfaces connected to the charging load. The charging circuit 20 allocates power to the remaining charging interfaces connected to the charging load based on the power average allocation principle and the power lock-in values ​​of at least some of the charging interfaces.

[0046] In an alternative embodiment, such as Figure 3 As shown, Figure 3 This application provides a flowchart of a power distribution process involving a control terminal, specifically:

[0047] Step 31: Determine the interface for locking the power value.

[0048] The interface for locking the power value is determined by the power distribution parameters, which are generated by the control terminal based on the charging parameters of the connected charging load obtained by the charging circuit 20 through multiple charging interfaces.

[0049] Step 32: Based on the power lock value received by the communication circuit 30 from the control terminal, the charging circuit 20 allocates lock power to the interface of the lock power.

[0050] Specifically, the power lock value needs to satisfy condition W. 锁 <W 总 -n*W 门 .

[0051] Among them, W 锁 For the power lock value, W 总 The total power value, W 门 This is the minimum power threshold for the interface.

[0052] Step 33: Determine the remaining power value based on the total power and the allocated power value.

[0053] The remaining power value is equal to the difference between the total power and the allocated power value.

[0054] Step 34: Allocate the remaining power value to the remaining charging ports according to the principle of average distribution.

[0055] Understandably, when the control terminal participates in power distribution, the power distribution of the remaining charging interfaces connected to the charging load by the charging circuit 20 also includes matching the power level, as detailed below:

[0056] First, the corresponding first power value is determined by averaging the remaining power values ​​based on the number of remaining charging ports and the remaining power values.

[0057] When the charging power level of the target remaining charging port does not match the first power value, a second power value that is less than the first power value and corresponds to the charging power level is assigned to the target remaining charging port.

[0058] The difference between the remaining power value and the target remaining power value is averaged based on the number of remaining charging interfaces of the connected charging loads other than the target remaining charging interface, in order to determine the corresponding third power value.

[0059] The charging circuit 20 allocates a third power value to the remaining charging interfaces connected to the charging load, excluding the target remaining charging interface.

[0060] For example, taking the charging device 100 as an example, three charging loads are connected to the charging circuit 20 through charging interfaces. The charging parameters of the three charging interfaces show that the total power of the three charging interfaces is 90 watts; the power of load one is locked at 24 watts, load two supports the PD protocol without power levels, and load three supports the QC protocol with power levels, with power levels of 18 watts, 24 watts, 36 watts, and 60 watts. First, the charging interface connected to load one is allocated 26 watts of power; then, according to the principle of power equalization, the remaining two target charging interfaces are allocated a first power value of 32 watts respectively; since load three supports the charging protocol with power levels, comparing the allocated 32 watts with the power levels, it is found that it does not match any of the power values ​​in the power levels; at this time, the charging interface connected to load three is matched downwards according to the power level, and the matched power is the second power value of 24 watts, and the remaining 10 watts are allocated to load two. Finally, the power of the charging interfaces connected to the three loads are 26 watts, 40 watts, and 24 watts respectively.

[0061] Unlike existing technologies, when a control terminal is involved, the charging circuit 20 obtains the charging parameters of the connected charging load through multiple charging interfaces, sends the charging parameters to the control terminal through the communication circuit 30, and receives the power allocation parameters generated by the control terminal based on the charging parameters. Based on the power allocation parameters, the charging circuit 20 allocates power to the multiple charging interfaces connected to the charging load, realizing the function of dynamic power allocation controlled by the control terminal. The charging interfaces connected to the charging load can utilize the allocated power to the maximum extent and reduce power waste. When no control terminal is involved, the charging circuit 20 allocates power to the multiple charging interfaces connected to the charging load based on the principle of power average allocation.

[0062] As can be seen from the above description, regardless of whether a control terminal is involved, the charging device 100 of the present invention can perform intelligent power allocation, thereby realizing dynamic power allocation to the target charging interface connected to the target charging load.

[0063] In addition, the charging parameters of the charging load include charging current, charging voltage, and charging power.

[0064] Understandably, the charging device 100 obtains the charging voltage of the target charging load connected to the target charging interface through the charging circuit 20, and sends the charging voltage to the control terminal through the communication circuit 30, so that the control terminal determines the corresponding charging power-off strategy based on the charging voltage, and uses the charging power-off strategy to monitor the charging status of the target charging load, so as to disconnect the power to the target charging load after the target charging load is fully charged.

[0065] The following is combined Figure 1 and Figure 4 To explain, Figure 4This is a flowchart of the power-off strategy provided in this application, and the specific steps are as follows:

[0066] Step 41: The charging circuit 20 acquires the charging voltage of the target charging load, and the communication circuit 30 sends the charging voltage to the control terminal.

[0067] Understandably, the charging circuit 20 obtains the charging voltage of the target charging load, and the control terminal determines the corresponding charging power-off strategy based on the charging voltage.

[0068] Step 42: Determine the power-off strategy based on the charging voltage.

[0069] Specifically, the power-off strategy includes three scenarios, and the strategy is related to the device type of the connected charging load. Device types are categorized as Type 1, Type 2, and Type 3. When the charging load is initially connected to the charging interface, it is assumed to be a Type 1 device. Then, the charging load's device type is determined based on the charging voltage. If the charging voltage is around 20V, the charging load is classified as a Type 2 device; if the charging voltage is below 5V or 9V, the charging load is classified as a Type 3 device; otherwise, the charging load remains as the initial Type 1 device.

[0070] The first type of device is a mobile phone; the second type of device is a laptop, tablet, etc.; and the third type of device is a low-power device, such as headphones and power banks.

[0071] Step 43: Detect the charging status of the target charging load using the corresponding full-charge-and-shut-down strategy.

[0072] Understandably, the state of charge of the target charging load is the battery's charging level relative to its capacity, expressed as a percentage.

[0073] Step 44: Determine if the target charging load is fully charged. If it is, proceed to step 45; otherwise, return to step 43.

[0074] Step 45: Disconnect the power to the target charging load and close the target charging interface.

[0075] In addition, after closing the target charging port, power is allocated to the remaining charging ports according to the power allocation principle.

[0076] Unlike existing technologies, the fully charged power-off strategy provided in this embodiment is based on the charging voltage and is determined according to different device types. Different devices require different power, so the corresponding power is provided according to different devices. Then, the charging status is monitored according to the device type of the connected charging load, and when the target charging load is fully charged, the target charging interface is powered off to stop providing power to the target charging interface. This avoids damage to the charging load caused by continuously charging the target charging load after it is fully charged, and protects the health and safety of the charging load.

[0077] Understandably, after the target charging port is powered off, the power originally allocated to the target charging port will be redistributed to the remaining charging ports according to the power allocation principle. First, it is determined whether there is a locked power value for the target charging load connected to the charging port. If there is a locked power value, power is allocated to the target charging load first, and then the remaining charging ports are allocated the corresponding power according to the power allocation principle. If there is no locked power value, power is directly allocated according to the power allocation principle.

[0078] In this embodiment, the charging device 100 further includes a sensing circuit for collecting the operating parameters of multiple charging interfaces and sending the operating parameters to the control terminal via the communication circuit 30, so that the control terminal can display the corresponding parameters.

[0079] Optionally, the sensing circuit includes a temperature sensor, an ammeter, a voltmeter, etc.

[0080] Understandably, the operating parameters of the charging interface include charging voltage, charging current, charging power, and charging temperature. These operating parameters also include the time during which the charging circuit 20 provides power to the connected charging load, as well as the charging power data per minute.

[0081] Understandably, this operating parameter is displayed to the user as a graph on the control terminal.

[0082] The following section introduces the working parameters and procedures of the charging interface on the control terminal.

[0083] Please see Figure 5 , Figure 5 This is a flowchart illustrating the operating parameters of the charging interface provided in this application. The specific steps are as follows:

[0084] Step 51: The sensing circuit collects the operating parameters of the charging interface.

[0085] Step 52: Send the operating parameters of the charging interface to the control terminal via the communication circuit.

[0086] Step 53: The control terminal displays the received working parameters.

[0087] The following section introduces how to implement temperature monitoring and power adjustment functions.

[0088] Please see Figure 6 , Figure 6 This is a flowchart of temperature monitoring and power adjustment provided in this application. The specific steps are as follows:

[0089] Step 61: The sensing circuit collects the operating parameters of the charging interface.

[0090] Step 62: The control terminal generates a power adjustment command based on the temperature parameter in the operating parameters.

[0091] Understandably, this temperature parameter is obtained through a temperature sensor, and the corresponding temperature data is obtained when the charging load approaches the sensing circuit.

[0092] Optionally, the power adjustment instruction includes: reducing the power of the target charging interface based on a charging protocol that supports power levels, wherein the power of the target charging interface is allocated downwards according to the power level; and reducing the power of the target charging interface by 30% based on a charging protocol that does not support power levels.

[0093] Additionally, if the power of a charging port that supports a power level is reduced to 18 watts, or the power of a charging port that does not support a power level is reduced to 15 watts, and the temperature of the target charging port still exceeds the set temperature of 70 degrees Celsius, then the target charging port will be shut down directly.

[0094] Step 63: The charging circuit receives the power adjustment command through the communication circuit.

[0095] Step 64: Based on the power adjustment command, the charging circuit adjusts the power value of the target charging interface.

[0096] In addition, after the target charging interface reduces its power, the sensing circuit will detect the temperature parameters of the charging interface in real time. After a fixed reference time is set, the temperature parameters of the target charging interface will be fed back to the control terminal. The control terminal will generate a power adjustment command based on the temperature parameters and continue to reduce the power.

[0097] Understandably, if the power is reduced or the charging port is turned off, the power will be redistributed to the remaining charging ports.

[0098] For example, if a charging port's power is 30 watts before power reduction, and the temperature exceeds a set temperature of 70 degrees Celsius, the charging circuit will reduce the power of the charging port. First, it determines whether the charging load connected to the charging port supports the charging protocol with the specified power level. If the charging load supports the charging protocol with the specified power level, for example, if the charging load supports the QC protocol, the charging circuit will reduce the power of the charging port to 24 watts. If the charging load does not support the charging protocol with the specified power level, for example, if the charging load supports the PD protocol, the charging circuit will reduce the power of the charging port by 30%, that is, reduce it to 21 watts.

[0099] In this way, the control terminal collects the temperature parameters of multiple charging interfaces based on the sensing circuit and generates a power adjustment command. The charging circuit adjusts the power allocated to the target charging interface based on the power adjustment command to avoid the temperature at the charging interface being too high, thereby damaging the charging load and protecting the load.

[0100] Understandably, the above process is one of the power distribution methods in this application, and this application is not limited to the above method.

[0101] The following section introduces how to implement the timed charging and power-off function of the control terminal.

[0102] Please see Figure 7 , Figure 7 This is a flowchart of the control terminal for timed charging and power-off provided in this application. The specific steps are as follows:

[0103] Step 71: The user sets the charging time parameters on the control terminal.

[0104] Optionally, the charging time parameter is the time for charging the load, including the charging start time and the charging duration, and the charging time parameter is set by the control terminal upon receiving user operation.

[0105] Step 7: The charging circuit obtains the charging time through the communication circuit.

[0106] Step 73: Determine whether charging has started. If yes, proceed to step 74; otherwise, return to step 72.

[0107] Step 74: Charge the target charging port.

[0108] Step 75: Determine if it is time to charge. If yes, proceed to step 76; otherwise, return to step 74.

[0109] Step 76: Power on the target charging port.

[0110] Step 77: Determine if the charging time has ended. If yes, proceed to step 78; otherwise, return to step 76.

[0111] Step 78: Stop supplying power to the target charging port.

[0112] Understandably, the charging device 100 can achieve timed charging and power-off, and countdown charging and power-off.

[0113] The embodiments of this application implement intelligent power distribution, intelligent charging and power-off, and timed charging and power-off functions based on hardware functional module 100.

[0114] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A charging device, characterized in that, The charging device includes: A power supply circuit; A charging circuit connected to the power supply circuit. The charging circuit includes a plurality of charging interfaces, and each charging interface is used to connect a charging load; A communication circuit connected to the power supply circuit and the charging circuit and communicatively connected to a control terminal; wherein, the control terminal does not belong to the charging device; Wherein, the charging circuit obtains the charging parameters of the connected charging load through the plurality of charging interfaces and sends the charging parameters to the control terminal through the communication circuit; The charging circuit is configured to: receive the power distribution parameters generated by the control terminal based on the charging parameters. The power distribution parameters include the power lock values of at least some of the charging interfaces connected to the charging load, and perform power distribution on the plurality of charging interfaces connected to the charging load based on the power distribution parameters; The distribution method includes: based on the power lock values of at least some of the charging interfaces, assign corresponding power values to at least some of the charging interfaces; according to the total power value and the assigned power values, determine the remaining power value; based on the remaining power value, evenly distribute the corresponding power values to the remaining charging interfaces; Alternatively, when the power distribution parameters generated by the control terminal based on the charging parameters are not received, perform power distribution on the plurality of charging interfaces connected to the charging load based on the principle of average power distribution; The distribution method includes: evenly distribute the total power value based on the number of charging interfaces connected to the charging load to determine the corresponding first power value; when the charging power level of the target charging interface does not match the first power value, assign a second power value less than the first power value and corresponding to the charging power level to the target charging interface; evenly distribute the difference between the total power value and the power value of the target charging interface based on the number of charging interfaces connected to the charging load other than the target charging interface to determine the corresponding third power value; assign the third power value to the charging interfaces connected to the charging load other than the target charging interface; Wherein, the operating parameters of the plurality of charging interfaces include temperature parameters; the charging circuit is further configured to obtain the power adjustment instruction of the control terminal through the communication circuit and adjust the power value of the target charging interface based on the power adjustment instruction; wherein, the power adjustment instruction is generated by the control terminal based on the temperature parameter of the target charging interface.

2. The charging device according to claim 1, wherein W_lock < W_total - n * W_threshold; Wherein, W_lock is the power lock value, W_total is the total power value, and W_threshold is the minimum power threshold of the interface.

3. The charging device according to claim 1, wherein The charging device is also used to acquire the charging voltage of the target charging load connected to the target charging interface, and send the charging voltage to the control terminal through the communication circuit, so that the control terminal can determine the corresponding full-charge power-off strategy based on the charging voltage, so as to monitor the charging status of the target charging load using the full-charge power-off strategy, and to disconnect the power to the target charging load after the target charging load is fully charged.

4. The charging device according to claim 1, characterized in that, The charging device also includes a sensing circuit, which is used to collect the operating parameters of the plurality of charging interfaces and send the operating parameters to the control terminal through the communication circuit, so that the control terminal can display the corresponding parameters.

5. The charging device according to claim 1, characterized in that, The charging circuit is also used to obtain the charging time parameters of the control terminal through the communication circuit, and to stop charging the charging load of the target charging interface when the requirements of the charging time parameters are met; wherein, the charging time parameters are set by the control terminal upon receiving user operation.

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