Charging Circuit Determination Method and Device, Electronic Device, Storage Medium

Abstract

The present disclosure relates to a method and apparatus for determining a charging circuit, an electronic device, and a storage medium. The method includes: obtaining a preset circuit equivalent model; the circuit equivalent model includes a preset number of charging paths, and some of the charging paths include controllable devices; controlling the operating states of the controllable devices to form an initial equivalent circuit including different charging paths; obtaining the charging current in each charging path of each initial equivalent circuit in a charging state; obtaining the heat loss value of each initial equivalent circuit according to the charging current in each charging path and the resistance value of each equivalent component in the circuit equivalent model; and determining the initial equivalent circuit with the minimum heat loss value under the same conditions as the target charging circuit. In this embodiment, only one circuit equivalent model needs to be established to determine the target charging circuit, which can reduce the number of times of establishing the circuit equivalent model and the calculation amount, shorten the modeling time, and is beneficial to improving the design efficiency of the charging circuit.

Description

Technical Field

[0001] The present disclosure relates to the technical field of fast charging design, and in particular to a charging circuit determination method and device, an electronic device, and a storage medium. Background Art

[0002] At present, most electronic devices (such as smart phones) use fast charging technology. The mainstream charging solution is a combination of integrated power management circuit (Power Management IC, PMIC circuit) and 2:1 charge pump. In actual applications, two 2:1 charge pump chargers are usually used when the charging power exceeds 30W. Since the 2:1 charger cannot limit the current, it can only control the charging current by the ratio of the input and output voltage difference and impedance value. Therefore, the current distribution of the dual-channel 2:1 charger is closely related to the path impedance.

[0003] When the influence of the PMIC circuit on the charging current shunting is not considered, only the impedance distribution of the two 2:1 chargers can be calculated. In this case, the model is relatively simple and it is easy to list equations to solve. However, in existing charging schemes, the PMIC circuit will also shunt the charging current. For example, the PMIC circuit charger can integrate a 3-LEVEL architecture, which will shunt a large part of the current, turning the actual circuit charging into 3-way parallel charging, making the model more complicated. If the shunt effect is ignored at this time, it will affect the designed charging scheme. Summary of the invention

[0004] The present disclosure provides a charging circuit determination method and device, an electronic device, and a storage medium to address the deficiencies of related technologies.

[0005] According to a first aspect of an embodiment of the present disclosure, a charging circuit determination method is provided, the method comprising:

[0006] Obtaining a preset circuit equivalent model; the circuit equivalent model includes a preset number of charging paths, and some of the charging paths include controllable devices;

[0007] Controlling the working state of each controllable device to form an initial equivalent circuit including different charging paths;

[0008] Obtaining the charging current in each charging path of each initial equivalent circuit under the charging state;

[0009] Obtaining a heat loss value of each initial equivalent circuit according to a charging current in each charging path and a resistance value of each equivalent component in a circuit equivalent model;

[0010] The initial equivalent circuit with the smallest heat loss value under the same conditions is determined as the target charging circuit.

[0011] Optionally, the circuit equivalent model includes a charge pump circuit; the front stage circuit of each charge pump circuit is transformed to the rear stage circuit through a preset transformation, or the rear stage circuit is transformed to the front stage circuit through a preset transformation;

[0012] The preset transformation refers to:

[0013] When the front-stage circuit is equivalent to the rear-stage circuit, the voltage of the front-stage circuit is 0.5 times the sum of the voltage of the rear-stage circuit and the preset loss voltage, the current of the front-stage circuit is 2 times the current of the rear-stage circuit, and the resistance value of the front-stage circuit is 0.25 times the value before the preset transformation;

[0014] or,

[0015] When the subsequent circuit is equivalent to the previous circuit, the sum of the voltage of the subsequent circuit and the preset loss voltage is twice the voltage of the previous circuit, the current of the subsequent circuit is 0.5 times the current of the previous circuit, and the resistance value of the subsequent circuit is 4 times that before the preset transformation.

[0016] Optionally, the circuit equivalent model includes two charge pump circuits, namely a master charge pump circuit and a slave charge pump circuit; the circuit equivalent model also includes a PMIC circuit;

[0017] The initial equivalent circuit includes at least one of the following: a first initial equivalent circuit, a second initial equivalent circuit, and a third initial equivalent circuit;

[0018] The first initial equivalent circuit refers to an equivalent circuit corresponding to when the PMIC circuit and the main charge pump circuit are arranged on the main board circuit and the slave charge pump circuit is arranged on the slave board circuit;

[0019] The second initial equivalent circuit refers to an equivalent circuit corresponding to the case where the PMIC circuit, the main charge pump circuit, and the slave charge pump circuit are all arranged on the mainboard circuit and the main charge pump circuit and the slave charge pump circuit share a voltage protection circuit;

[0020] The third initial equivalent circuit refers to the equivalent circuit corresponding to the case where the PMIC circuit, the main charge pump circuit and the slave charge pump circuit are all arranged on the main board circuit, and the PMIC circuit, the main charge pump circuit and the slave charge pump circuit each use a voltage protection circuit.

[0021] Optionally, after determining the initial equivalent circuit with the smallest heat loss value under the same conditions as the target charging circuit, the method further includes:

[0022] Obtain the installation position and area of ​​each equivalent component in the target charging circuit;

[0023] Obtain the heat loss values ​​of all equivalent components in each area;

[0024] The area corresponding to the maximum heat loss value is determined as the installation area for the heat dissipation device.

[0025] Optionally, the controllable device is a controllable resistor; when the controllable device is in an on state, the controllable resistor is a non-zero resistance; when the controllable device is in an off state, the controllable resistor takes a value of infinity.

[0026] According to a second aspect of an embodiment of the present disclosure, a charging circuit determination device is provided, the device comprising:

[0027] A circuit model acquisition module, used to acquire a preset circuit equivalent model; the circuit equivalent model includes a preset number of charging paths, some of which include controllable devices;

[0028] An initial circuit acquisition module, used to control the working state of each controllable device to form an initial equivalent circuit including different charging paths;

[0029] A charging current acquisition module, used to acquire the charging current in each charging path of each initial equivalent circuit in a charging state;

[0030] A heat loss value acquisition module, used to acquire the heat loss value of each initial equivalent circuit according to the charging current in each charging path and the resistance value of each equivalent component in the circuit equivalent model;

[0031] The target circuit acquisition module is used to determine the initial equivalent circuit with the smallest heat loss value under the same conditions as the target charging circuit.

[0032] Optionally, the circuit equivalent model includes a charge pump circuit; the front stage circuit of each charge pump circuit is transformed to the rear stage circuit through a preset transformation, or the rear stage circuit is transformed to the front stage circuit through a preset transformation;

[0033] The preset transformation refers to:

[0034] When the front-stage circuit is equivalent to the rear-stage circuit, the voltage of the front-stage circuit is 0.5 times the sum of the voltage of the rear-stage circuit and the preset loss voltage, the current of the front-stage circuit is 2 times the current of the rear-stage circuit, and the resistance value of the front-stage circuit is 0.25 times the value before the preset transformation;

[0035] or,

[0036] When the subsequent circuit is equivalent to the previous circuit, the sum of the voltage of the subsequent circuit and the preset loss voltage is twice the voltage of the previous circuit, the current of the subsequent circuit is 0.5 times the current of the previous circuit, and the resistance value of the subsequent circuit is 4 times that before the preset transformation.

[0037] Optionally, the circuit equivalent model includes two charge pump circuits, namely a master charge pump circuit and a slave charge pump circuit; the circuit equivalent model also includes a PMIC circuit;

[0038] The initial equivalent circuit includes at least one of the following: a first initial equivalent circuit, a second initial equivalent circuit, and a third initial equivalent circuit;

[0039] The first initial equivalent circuit refers to an equivalent circuit corresponding to when the PMIC circuit and the main charge pump circuit are arranged on the main board circuit and the slave charge pump circuit is arranged on the slave board circuit;

[0040] The second initial equivalent circuit refers to an equivalent circuit corresponding to the case where the PMIC circuit, the main charge pump circuit, and the slave charge pump circuit are all arranged on the mainboard circuit and the main charge pump circuit and the slave charge pump circuit share a voltage protection circuit;

[0041] The third initial equivalent circuit refers to the equivalent circuit corresponding to the case where the PMIC circuit, the main charge pump circuit and the slave charge pump circuit are all arranged on the main board circuit, and the PMIC circuit, the main charge pump circuit and the slave charge pump circuit each use a voltage protection circuit.

[0042] Optionally, the device further includes an installation area acquisition module, and the installation area acquisition module includes:

[0043] An area acquisition unit, used to acquire the installation position and area of ​​each equivalent component in the target charging circuit;

[0044] A heat loss value acquisition unit, used to acquire heat loss values ​​of all equivalent components in each area;

[0045] The installation area acquisition unit is used to determine the installation area of ​​the heat dissipation device according to the area corresponding to the maximum heat loss value.

[0046] Optionally, the controllable device is a controllable resistor; when the controllable device is in an on state, the controllable resistor is a non-zero resistance; when the controllable device is in an off state, the controllable resistor takes a value of infinity.

[0047] According to a third aspect of an embodiment of the present disclosure, there is provided an electronic device, including:

[0048] processor;

[0049] a memory for storing a computer program executable by the processor;

[0050] The processor is configured to execute the computer program in the memory to implement the steps of the above method.

[0051] According to a fourth aspect of an embodiment of the present disclosure, a computer-readable storage medium is provided, and when an executable computer program in the storage medium is executed by a processor, the steps of the above-mentioned method can be implemented.

[0052] The technical solution provided by the embodiments of the present disclosure may have the following beneficial effects:

[0053] It can be seen from the above embodiments that the working state of each controllable device in the preset circuit equivalent model can be controlled in the embodiment of the present disclosure, so that the circuit equivalent model can form an initial equivalent circuit containing different charging paths; then, the charging current in each charging path of each initial equivalent circuit in the charging state can be obtained; thereafter, the heat loss value of each initial equivalent circuit can be obtained according to the charging current in each charging path and the resistance value of each equivalent component in the circuit equivalent model; finally, the initial equivalent circuit with the smallest heat loss value under the same conditions can be determined as the target charging circuit. In this way, in this embodiment, only one circuit equivalent model needs to be established to determine the target charging circuit, which can reduce the number of times the circuit equivalent model is established and the amount of calculation, shorten the modeling time, and help improve the design efficiency of the charging circuit.

[0054] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0056] Figure 1 It is a schematic diagram of a circuit for compensating crosstalk in the related art.

[0057] Figure 2 It is a schematic diagram of a circuit equivalent model shown in the related art.

[0058] Figure 3 It is a schematic diagram of another circuit equivalent model shown in the related art.

[0059] Figure 4 It is a schematic diagram of another circuit equivalent model shown in the related art.

[0060] Figure 5 is a schematic diagram of a circuit equivalent model according to an exemplary embodiment.

[0061] Figure 6 It is a circuit diagram of a branch where a 2:1 charge pump circuit is located before conversion according to an exemplary embodiment.

[0062] Figure 7is a circuit diagram of a branch where a 2:1 charge pump circuit is located after conversion according to an exemplary embodiment.

[0063] Figure 8 The following is a flowchart of obtaining an installation area according to an exemplary embodiment.

[0064] Fig. 9 is a block diagram of a charging circuit determination device according to an exemplary embodiment.

[0065] Fig.10 It is a block diagram of an electronic device according to an exemplary embodiment. DETAILED DESCRIPTION

[0066] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described below by way of example do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices consistent with some aspects of the present disclosure as detailed in the appended claims.

[0067] The embodiment of the present disclosure also provides a charging circuit determination method, which can be applied to the design scenario of the charging circuit in the electronic device. Figure 1 is a flow chart showing a method for determining a charging circuit according to an exemplary embodiment. Figure 1 , a charging circuit determination method, comprising steps 11 to 15:

[0068] In step 11, a preset circuit equivalent model is obtained; the circuit equivalent model includes a preset number of charging paths, and some of the charging paths include controllable devices.

[0069] In this embodiment, a preset circuit equivalent model may be stored in the electronic device, and the circuit equivalent model may cover charging circuits of various usage scenarios.

[0070] Taking the circuit equivalent model including two 2:1 charge pump circuits and a PMIC circuit as an example, the two 2:1 charge pump circuits are a master charge pump circuit and a slave charge pump circuit respectively. In the related art, the two 2:1 charge pump circuits and the PMIC circuit can be set as follows:

[0071] (1) Main board and sub-board structure, that is, the circuit structure corresponding to the case where the PMIC circuit and the main charge pump circuit are arranged on the main board circuit and the slave charge pump circuit is arranged on the sub-board circuit. In the related art, it is necessary to establish a circuit equivalent model for this circuit structure, such as Figure 2 shown.

[0072] (2) L-type structure, that is, the PMIC circuit, the main charge pump circuit and the slave charge pump circuit are all arranged on the main board circuit, and the main charge pump circuit and the slave charge pump circuit share a voltage protection circuit (OVP) corresponding to the circuit structure. In the related art, it is necessary to establish a circuit equivalent model for this circuit structure, such as Figure 3 shown.

[0073] (3) L-type structure, that is, the PMIC circuit, the main charge pump circuit and the slave charge pump circuit are all arranged on the main board circuit, and the PMIC circuit, the main charge pump circuit and the slave charge pump circuit each use a voltage protection circuit. The relevant technology needs to establish a circuit equivalent model for this circuit structure, such as Figure 4 As shown. This embodiment only lists three circuit equivalent models corresponding to two charge pump circuits used in the related art. By analyzing the above circuit, it can be found that obtaining the above three circuit equivalent models will be very cumbersome and the amount of calculation is relatively large. Therefore, in this embodiment, the above multiple circuit equivalent models are normalized to obtain a preset circuit equivalent model, such as Figure 5 shown.

[0074] It should be noted that Figure 2-Figure 3 Each equivalent device in the figure may correspond to a device in an actual circuit, for example, Z1 represents the path impedance, Z2 represents the slave charge pump equivalent impedance and the slave battery FPC impedance and the battery connector impedance, Z3 represents the path impedance, Z4 represents the master charge pump equivalent impedance and the path impedance, Z5 represents the PMIC equivalent impedance, Z6 represents the FET and the path impedance, Z7 represents the master battery FPC impedance and the battery connector impedance, Z8 may represent the path circuit and the OVP circuit impedance, Z9 represents the impedance of the controllable device, Z10 represents the impedance of the controllable device, Z11 represents the path impedance, the OVP impedance and the FPC impedance, Z12 represents the TYPE-C interface impedance, the path impedance, the connection impedance, the FPC impedance and the connector impedance, and Z13 represents the battery PCM board impedance. It is understandable that the equivalent devices Z1 to Z14 are only illustrative, and corresponding adjustments are made with the actual circuit layout of the electronic device.

[0075] See also Figure 5 In this embodiment, Figure 2 On the basis of the equivalent circuit model shown, an equivalent component Z9 is added between the equivalent component Z1 and the equivalent component Z3. The equivalent components Z9 and Z10 are set as controllable components, such as controllable switches or controllable resistors.

[0076] In this embodiment, the electronic device can control the working state of each controllable device, which includes an on state and an off state; in the on state, the controllable device can have a non-zero resistance; in the off state, the controllable resistance takes an infinite value. In this example, by controlling the controllable device, the circuit equivalent model can form an initial equivalent circuit containing different charging paths.

[0077] For example, giving the resistance value of the controllable resistor Z9 to infinity (such as 99999999999) can be understood as Figure 5 By removing the controllable resistor Z9 in the circuit, a first initial equivalent circuit can be obtained. The first initial equivalent circuit can be shown as Figure 2 As shown, the first initial equivalent circuit refers to the equivalent circuit corresponding to when the PMIC circuit and the main charge pump circuit are arranged on the main board circuit and the slave charge pump circuit is arranged on the slave board circuit.

[0078] For another example, assigning the resistance value of the controllable resistor Z10 to infinity (such as 99999999999) can be understood as Figure 5 By removing the controllable resistor Z10 in the circuit, a second initial equivalent circuit can be obtained. The second initial equivalent circuit can be shown as Figure 3 As shown, the second initial equivalent circuit refers to the equivalent circuit corresponding to when the PMIC circuit, the main charge pump circuit and the slave charge pump circuit are all arranged on the main board circuit and the main charge pump circuit and the slave charge pump circuit share a voltage protection circuit.

[0079] For another example, by assigning the resistance values ​​of the controllable resistors Z9 and Z10 to infinity (such as 99999999999), a third initial equivalent circuit can be obtained. The third initial equivalent circuit can be shown as Figure 4 As shown, the third initial equivalent circuit refers to the equivalent circuit corresponding to the case where the PMIC circuit, the main charge pump circuit and the slave charge pump circuit are all arranged on the main board circuit, and the PMIC circuit, the main charge pump circuit and the slave charge pump circuit each use a voltage protection circuit.

[0080] In this embodiment, by controlling the controllable devices in the circuit equivalent model, the circuit equivalent model can generate different initial equivalent circuits, and these initial equivalent circuits can cover different circuit structures in the related technology. That is to say, in this embodiment, the initial equivalent circuits corresponding to different circuit structures can be obtained through a one-time modeling process, which reduces the time used for scheme design and can reduce the amount of calculation of the equivalent model.

[0081] It should be noted that the above Figure 5Its embodiments only illustrate the scenario of setting up two charge pump circuits. In actual applications, the circuit equivalent model and the equivalent components in the circuit equivalent model that are controllable devices can be adjusted according to the number of charge pump circuits to achieve the effect of adjusting the circuit equivalent model through controllable devices. The phase change scheme falls within the protection scope of the present disclosure.

[0082] It should be noted that, considering the working principle of the 2:1 charge pump circuit, in this embodiment, a preset transformation is performed on each 2:1 charge pump circuit in the circuit equivalent model, and the preset transformation refers to:

[0083] When the front-stage circuit is equivalent to the rear-stage circuit, the voltage of the front-stage circuit is 0.5 times the sum of the voltage of the rear-stage circuit and the preset loss voltage, the current of the front-stage circuit is 2 times the current of the rear-stage circuit, and the resistance value of the front-stage circuit is 0.25 times the value before the preset transformation;

[0084] or,

[0085] When the subsequent circuit is equivalent to the previous circuit, the sum of the voltage of the subsequent circuit and the preset loss voltage is twice the voltage of the previous circuit, the current of the subsequent circuit is 0.5 times the current of the previous circuit, and the resistance value of the subsequent circuit is 4 times that before the preset transformation.

[0086] The following will describe the solutions of various embodiments by taking the previous stage circuit as an example to be equivalent to the next stage circuit, and the next stage circuit can be equivalent to the previous stage circuit by referring to the subsequent content and combining the above preset transformation content to make adaptive adjustments. Figure 6 and Figure 7 , Figure 6 The 2:1 charge pump circuit, the front stage circuit and the back stage circuit are shown. Figure 7 The figure shows the preset transformation of the 2:1 charge pump circuit, which makes the front stage circuit equivalent to the back stage circuit. Figure 6 and Figure 7 It can be seen that after the preset transformation, the input voltage Uin of the front-stage circuit of the 2:1 charge pump circuit equivalent circuit becomes 2Uout, the input current Iin becomes 0.5Iin, and the resistance Zin of the front-stage circuit becomes 0.25Zin. It should be noted that in the above preset transformation process, the 2:1 charge pump circuit is regarded as an ideal device, which does not have heat loss.

[0087] In practical applications, the 2:1 charge pump circuit has heat loss. Figure 6 and Figure 7, assuming Iin = 1 ampere, Iout = 2 amperes, Zin = 4 ohms, Zout = 1 ohm. Before the preset transformation, the input voltage and input current of the front stage circuit are 13.2V and 1A, and the output voltage and output current are 9.2V and 1A. The input voltage and input current of the 2:1 charge pump circuit are 9.2V and 1A, and the output voltage and output current are 4.5V and 2A. The input voltage and input current of the rear stage circuit are 4.5V and 2A, and the output voltage and output current are 2.5V and 2A.

[0088] After the preset transformation, the input voltage and input current of the front stage circuit are 6.6V and 2A, and the output voltage and output current are 4.6V and 2A. The input voltage and input current of the 2:1 charge pump circuit are 4.6V and 2A, and the output voltage and output current are 4.5V and 2A. The input voltage and input current of the rear stage circuit are 4.5V and 2A, and the output voltage and output current are 2.5V and 2A. The calculation process is as follows:

[0089] The resistance value of the front stage circuit is: Zin' = (6.6V-4.6V) / 2A = 1 ohm = 0.25 Zin.

[0090] The resistance value of the equivalent circuit of the 2:1 charge pump circuit is: Zeq = (4.6V-4.5V) / 2A = 0.05 ohm.

[0091] Before preset transformation:

[0092] Iin=0.5*Iout=1A.

[0093] Uin=(Uout+Iout*Zeq)*2=(4.5V+2*0.05V)*2=9.6V.

[0094] Uusb=Uin+Iin*Zin=9.6V+1*4V=13.6V.

[0095] After preset transformation:

[0096] Iin'=2Iin=2*0.5*Iout=Iout=2A, that is, the current before and after the resistor is equal.

[0097] Uin'=0.5*Uin=0.5*(Uout+Iout*Zeq)*2=Uout+Iout*Zeq=4.6V.

[0098] Zin'=(Uusb'-Uin') / Iin'=0.5*(Uusb-Uin) / 2*Iin=0.25Zin.

[0099] It can be seen from the above calculation that the circuit parameters before and after the transformation in this embodiment are equivalent, that is, the preset transformation is correct.

[0100] In step 12, the working state of each controllable device is controlled to form an initial equivalent circuit including different charging paths.

[0101] Continuing with the example of two charge pump circuits, in this embodiment, by controlling the controllable devices Z9 and Z10, the first initial equivalent circuit, the second initial equivalent circuit and the third initial equivalent circuit can be obtained respectively. The specific control method can refer to the content in step 11, which will not be repeated here.

[0102] In step 13, the charging current in each charging path of each initial equivalent circuit in the charging state is obtained.

[0103] In this embodiment, the electronic device can obtain the charging current in each charging path of each initial equivalent circuit in the charging state. At this time, in the initial equivalent circuit, the PMIC circuit works in the BUCK mode.

[0104] Taking solving the charging current of the first initial equivalent circuit as an example, use MATLAB software to calculate:

[0105] >>syms Z1 Z2 Z3 Z4 Z5 Z6 Z7 Z8 Z9 Z10 Z11 VBAT Ib Is I1 I2 I3 I4IBAT;

[0106] >>eqns3=[Z1*(I3+Ib)+Z2*I3==Z3*(I2+Ib)+Z4*I2+Z7*(I1+I2)+Z9*I6,

[0107] Z3*(I2+Ib)+Z4*I2+Z10*I5==Z5*(I1+Is)+Z6*I1,

[0108] Z8*(I3+Ib+I4)+Z9*I6==Z11*(I1+I5+Is)+Z10*I5,

[0109] IBAT==I1+I2+I3]; / / Z9 is infinite;

[0110] >>vars = [I1 I2 I3 I4];

[0111] Among them, Ib is the leakage current of the charger, and Is is the current corresponding to the system power consumption.

[0112] Taking solving the charging current of the first initial equivalent circuit as an example, use MATLAB software to calculate:

[0113] "Z3*(I2+Ib)+Z4*I2+Z10*I5==Z5*(I1+Is)+Z6*I1", replaced by

[0114] “(VBAT+DU)*I6*EQ==VBAT*(I1+Is)”; / / EQ is the working efficiency of the buck and is a known variable.

[0115] In this way, this embodiment can obtain the charging current in each charging path, or the current at the input end and the output end of each equivalent component.

[0116] In step 14, the heat loss value of each initial equivalent circuit is obtained according to the charging current in each charging path and the resistance value of each equivalent component in the circuit equivalent model.

[0117] In this embodiment, the electronic device can obtain the resistance value of each equivalent component in the circuit equivalent model, and then calculate the heat loss value of each equivalent component according to the input current of each equivalent component, thereby obtaining the heat loss value of each initial equivalent circuit.

[0118] It should be noted that in the circuit equivalent model of this embodiment, each equivalent component has been equivalent to a resistor, so the operating loss value of each equivalent component can be calculated according to the formula "Q = I 2 *R” can be calculated.

[0119] In step 15, the initial equivalent circuit with the smallest heat loss value under the same conditions is determined as the target charging circuit.

[0120] In this embodiment, a judgment condition may be pre-set in the electronic device, so that an initial equivalent circuit may be selected from multiple initial equivalent circuits based on the judgment condition. In this example, the judgment condition may be that the output current Ibat (for charging the battery) is the same, that is, under the condition that the battery input current is the same, the initial equivalent circuit with the smallest heat loss value is determined as the target charging circuit.

[0121] It is understandable that in this embodiment, it is determined that the target charging circuit can be used as the charging circuit of the designed electronic device, or in other words, a charging circuit is selected from multiple initial equivalent circuits as the charging circuit of the designed electronic device.

[0122] In one embodiment, after determining the target charging circuit, the electronic device may further provide a heat dissipation device, see Figure 8In step 81, the electronic device can obtain the installation position and area of ​​each equivalent component in the target charging circuit. The above-mentioned area may include a main board area or a sub-board area. In step 82, the electronic device can obtain the heat loss values ​​of all equivalent components in each area. Combined with the method of obtaining the heat loss value in step 14, the heat loss value of each equivalent component can be obtained; then the heat loss value of all equivalent components in each area is obtained to obtain the heat loss value corresponding to each area. In step 83, the electronic device can sort the heat loss values ​​corresponding to each area, and determine the area corresponding to the largest heat loss value to set the installation area of ​​the heat dissipation device.

[0123] At this point, the working state of each controllable device in the preset circuit equivalent model can be controlled in the embodiment of the present disclosure, so that the circuit equivalent model can form an initial equivalent circuit containing different charging paths; then, the charging current in each charging path of each initial equivalent circuit in the charging state can be obtained; thereafter, the heat loss value of each initial equivalent circuit can be obtained according to the charging current in each charging path and the resistance value of each equivalent component in the circuit equivalent model; finally, the initial equivalent circuit with the smallest heat loss value under the same conditions can be determined as the target charging circuit. In this way, in this embodiment, only one circuit equivalent model needs to be established to determine the target charging circuit, which can reduce the number of times the circuit equivalent model is established and the amount of calculation, shorten the modeling time, and help improve the design efficiency of the charging circuit.

[0124] Based on the above-mentioned charging circuit determination method, the present disclosure also provides a charging circuit determination device, see Fig. 9 , the device comprises:

[0125] A circuit model acquisition module 91 is used to acquire a preset circuit equivalent model; the circuit equivalent model includes a preset number of charging paths, and some of the charging paths include controllable devices;

[0126] An initial circuit acquisition module 92, used to control the working state of each controllable device to form an initial equivalent circuit including different charging paths;

[0127] A charging current acquisition module 93, used to acquire the charging current in each charging path of each initial equivalent circuit in a charging state;

[0128] A heat loss value acquisition module 94, used to acquire the heat loss value of each initial equivalent circuit according to the charging current in each charging path and the resistance value of each equivalent component in the circuit equivalent model;

[0129] The target circuit acquisition module 95 is used to determine the initial equivalent circuit with the smallest heat loss value under the same conditions as the target charging circuit.

[0130] In one embodiment, the circuit equivalent model includes a charge pump circuit equivalent circuit; the front stage circuit of each charge pump circuit equivalent circuit is transformed to the rear stage circuit through a preset transformation, or the rear stage circuit is transformed to the front stage circuit through a preset transformation;

[0131] The preset transformation refers to:

[0132] When the front-stage circuit is equivalent to the rear-stage circuit, the voltage of the front-stage circuit is 0.5 times the sum of the voltage of the rear-stage circuit and the preset loss voltage, the current of the front-stage circuit is 2 times the current of the rear-stage circuit, and the resistance value of the front-stage circuit is 0.25 times the value before the preset transformation;

[0133] or,

[0134] When the subsequent circuit is equivalent to the previous circuit, the sum of the voltage of the subsequent circuit and the preset loss voltage is twice the voltage of the previous circuit, the current of the subsequent circuit is 0.5 times the current of the previous circuit, and the resistance value of the subsequent circuit is 4 times that before the preset transformation.

[0135] In one embodiment, the circuit equivalent model includes two charge pump circuit equivalent circuits, namely a master charge pump circuit equivalent circuit and a slave charge pump circuit equivalent circuit; the circuit equivalent model also includes a PMIC circuit equivalent circuit;

[0136] The initial equivalent circuit includes at least one of the following: a first initial equivalent circuit, a second initial equivalent circuit, and a third initial equivalent circuit;

[0137] The first initial equivalent circuit refers to an equivalent circuit corresponding to when the PMIC circuit and the main charge pump circuit are arranged on the main board circuit and the slave charge pump circuit is arranged on the slave board circuit;

[0138] The second initial equivalent circuit refers to an equivalent circuit corresponding to the case where the PMIC circuit, the main charge pump circuit, and the slave charge pump circuit are all arranged on the mainboard circuit and the main charge pump circuit and the slave charge pump circuit share a voltage protection circuit;

[0139] The third initial equivalent circuit refers to the equivalent circuit corresponding to the case where the PMIC circuit, the main charge pump circuit and the slave charge pump circuit are all arranged on the main board circuit, and the PMIC circuit, the main charge pump circuit and the slave charge pump circuit each use a voltage protection circuit.

[0140] In one embodiment, the device further includes an installation area acquisition module, and the installation area acquisition module includes:

[0141] An area acquisition unit, used to acquire the installation position and area of ​​each equivalent component in the target charging circuit;

[0142] A heat loss value acquisition unit, used to acquire heat loss values ​​of all equivalent components in each area;

[0143] The installation area acquisition unit is used to determine the installation area of ​​the heat dissipation device according to the area corresponding to the maximum heat loss value.

[0144] In one embodiment, the controllable device is a controllable resistor; when the controllable device is in an on state, the controllable resistor is a non-zero resistance; when the controllable device is in an off state, the controllable resistor takes a value of infinity.

[0145] It is understandable that the device provided in the embodiment of the present disclosure corresponds to the above method. For the specific content, reference can be made to the content of each embodiment of the method, which will not be repeated here.

[0146] Fig.10 1 is a block diagram of an electronic device according to an exemplary embodiment. For example, the electronic device 1000 may be a smart phone, a computer, a digital broadcast terminal, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

[0147] Reference Fig.10 , the electronic device 1000 may include one or more of the following components: a processing component 1002 , a memory 1004 , a power component 1006 , a multimedia component 1008 , an audio component 1010 , an input / output (I / O) interface 1012 , a sensor component 1014 , a communication component 1016 , and an image acquisition component 1018 .

[0148] The processing component 1002 generally controls the overall operation of the electronic device 1000, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processing component 1002 may include one or more processors 1020 to execute computer programs. In addition, the processing component 1002 may include one or more modules to facilitate interaction between the processing component 1002 and other components. For example, the processing component 1002 may include a multimedia module to facilitate interaction between the multimedia component 1008 and the processing component 1002.

[0149] The memory 1004 is configured to store various types of data to support operations on the electronic device 1000. Examples of such data include computer programs for any application or method operating on the electronic device 1000, contact data, phone book data, messages, pictures, videos, etc. The memory 1004 may 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 memory, flash memory, magnetic disk or optical disk.

[0150] The power supply component 1006 provides power to various components of the electronic device 1000. The power supply component 1006 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the electronic device 1000. The power supply component 1006 may include a power supply chip, and the controller may communicate with the power supply chip to control the power supply chip to turn on or off a switch device, so that the battery supplies power to the mainboard circuit or not.

[0151] The multimedia component 1008 includes a screen that provides an output interface between the electronic device 1000 and the target object. 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 touch screen to receive input signals from the target object. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundaries of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation.

[0152] The audio component 1010 is configured to output and / or input audio signals. For example, the audio component 1010 includes a microphone (MIC), and when the electronic device 1000 is in an operation mode, such as a call mode, a recording mode, and a voice recognition mode, the microphone is configured to receive an external audio signal. The received audio signal can be further stored in the memory 1004 or sent via the communication component 1016. In some embodiments, the audio component 1010 also includes a speaker for outputting audio signals.

[0153] The I / O interface 1012 provides an interface between the processing component 1002 and a peripheral interface module, which may be a keyboard, a click wheel, a button, etc.

[0154] The sensor assembly 1014 includes one or more sensors for providing various aspects of status assessment for the electronic device 1000. For example, the sensor assembly 1014 can detect the open / closed state of the electronic device 1000, the relative positioning of components, such as the display screen and keypad of the electronic device 1000, and the sensor assembly 1014 can also detect the position change of the electronic device 1000 or a component, the presence or absence of contact between the target object and the electronic device 1000, the orientation or acceleration / deceleration of the electronic device 1000, and the temperature change of the electronic device 1000.

[0155] The communication component 1016 is configured to facilitate wired or wireless communication between the electronic device 1000 and other devices. The electronic device 1000 can access a wireless network based on a communication standard, such as WiFi, 2G, 3G, 4G, 5G, or a combination thereof. In an exemplary embodiment, the communication component 1016 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 1016 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

[0156] In an exemplary embodiment, the electronic device 1000 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.

[0157] In an exemplary embodiment, a non-temporary readable storage medium including an executable computer program is also provided, such as a memory 1004 including instructions, and the executable computer program can be executed by a processor. The readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc.

[0158] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the disclosure disclosed herein. The present disclosure is intended to cover any variations, uses, or adaptations that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The description and examples are to be considered exemplary only, and the true scope and spirit of the present disclosure are indicated by the following claims.

[0159] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A method for determining a charging circuit, characterized in that, the method includes: Obtain a preset circuit equivalent model; the circuit equivalent model includes a preset number of charging paths, and some of the charging paths include controllable devices; Control the operating states of the controllable devices to form an initial equivalent circuit including different charging paths; Obtain the charging current in each charging path of each initial equivalent circuit in the charging state; According to the charging current in each charging path and the resistance value of each equivalent component in the circuit equivalent model, obtain the heat loss value of each initial equivalent circuit; Determine the initial equivalent circuit with the minimum heat loss value under the same conditions as the target charging circuit; Obtain the installation positions and the regions where each equivalent component in the target charging circuit is located; Obtain the heat loss values of all equivalent components in each region; Determine the installation region for setting the heat dissipation device corresponding to the region with the maximum heat loss value.

2. The method according to claim 1, characterized in that, the circuit equivalent model includes a charge pump circuit; the front-stage circuit of each charge pump circuit is transformed to the rear-stage circuit through a preset transformation or the rear-stage circuit is transformed to the front-stage circuit through a preset transformation; the preset transformation means: When the front-stage circuit is equivalent to the rear-stage circuit, the voltage of the front-stage circuit is 0.5 times the sum of the voltage of the rear-stage circuit and a preset loss voltage, the current of the front-stage circuit is 2 times the current of the rear-stage circuit, and the resistance value of the front-stage circuit is 0.25 times that before the preset transformation; Or, When the rear-stage circuit is equivalent to the front-stage circuit, the sum of the voltage of the rear-stage circuit and the preset loss voltage is 2 times the voltage of the front-stage circuit, the current of the rear-stage circuit is 0.5 times the current of the front-stage circuit, and the resistance value of the rear-stage circuit is 4 times that before the preset transformation.

3. The method according to claim 1, characterized in that, the circuit equivalent model includes 2 charge pump circuits, namely a main charge pump circuit and a slave charge pump circuit; the circuit equivalent model also includes a PMIC circuit; the initial equivalent circuit includes at least one of the following: a first initial equivalent circuit, a second initial equivalent circuit, and a third initial equivalent circuit; The first initial equivalent circuit refers to the equivalent circuit corresponding to setting the PMIC circuit and the main charge pump circuit on the main board circuit and the slave charge pump circuit on the secondary board circuit; The second initial equivalent circuit refers to the equivalent circuit corresponding to setting the PMIC circuit, the main charge pump circuit, and the slave charge pump circuit on the main board circuit and sharing a voltage protection circuit for the main charge pump circuit and the slave charge pump circuit; The third initial equivalent circuit refers to the equivalent circuit corresponding to setting the PMIC circuit, the main charge pump circuit, and the slave charge pump circuit on the main board circuit, and each of the PMIC circuit, the main charge pump circuit, and the slave charge pump circuit using a voltage protection circuit.

4. The method according to claim 1, characterized in that, the controllable device is a controllable resistor; when the controllable device is in the on state, the controllable resistor is a non-zero resistor; when the controllable device is in the off state, the value of the controllable resistor is infinite.

5. A device for determining a charging circuit, characterized in that, the device includes: A circuit model acquisition module, used to acquire a preset circuit equivalent model; the circuit equivalent model includes a preset number of charging paths, some of which include controllable devices; An initial circuit acquisition module, used to control the working state of each controllable device to form an initial equivalent circuit including different charging paths; A charging current acquisition module, used to acquire the charging current in each charging path of each initial equivalent circuit in a charging state; A heat loss value acquisition module, used to acquire the heat loss value of each initial equivalent circuit according to the charging current in each charging path and the resistance value of each equivalent component in the circuit equivalent model; A target circuit acquisition module is used to determine the initial equivalent circuit with the smallest heat loss value under the same conditions as the target charging circuit; An installation area acquisition module is installed, and the installation area acquisition module includes: An area acquisition unit, used to acquire the installation position and area of ​​each equivalent component in the target charging circuit; A heat loss value acquisition unit, used to acquire heat loss values ​​of all equivalent components in each area; The installation area acquisition unit is used to determine the installation area of ​​the heat dissipation device according to the area corresponding to the maximum heat loss value.

6. The device according to claim 5, It is characterized in that The circuit equivalent model includes a charge pump circuit; the front-stage circuit of each charge pump circuit is transformed to the rear-stage circuit through a preset conversion, or the rear-stage circuit is transformed to the front-stage circuit through a preset conversion; The preset transformation refers to: When the front-stage circuit is equivalent to the rear-stage circuit, the voltage of the front-stage circuit is 0.5 times the sum of the voltage of the rear-stage circuit and the preset loss voltage, the current of the front-stage circuit is 2 times the current of the rear-stage circuit, and the resistance value of the front-stage circuit is 0.25 times the value before the preset transformation; or, When the subsequent circuit is equivalent to the previous circuit, the sum of the voltage of the subsequent circuit and the preset loss voltage is twice the voltage of the previous circuit, the current of the subsequent circuit is 0.5 times the current of the previous circuit, and the resistance value of the subsequent circuit is 4 times that before the preset transformation.

7. The device according to claim 5, It is characterized in that The circuit equivalent model includes two charge pump circuits, namely a main charge pump circuit and a slave charge pump circuit; the circuit equivalent model also includes a PMIC circuit; The initial equivalent circuit includes at least one of the following: a first initial equivalent circuit, a second initial equivalent circuit, and a third initial equivalent circuit; The first initial equivalent circuit refers to an equivalent circuit corresponding to when the PMIC circuit and the main charge pump circuit are arranged on the main board circuit and the slave charge pump circuit is arranged on the slave board circuit; The second initial equivalent circuit refers to an equivalent circuit corresponding to the case where the PMIC circuit, the main charge pump circuit, and the slave charge pump circuit are all arranged on the mainboard circuit and the main charge pump circuit and the slave charge pump circuit share a voltage protection circuit; The third initial equivalent circuit refers to the equivalent circuit corresponding to the case where the PMIC circuit, the main charge pump circuit and the slave charge pump circuit are all arranged on the main board circuit, and the PMIC circuit, the main charge pump circuit and the slave charge pump circuit each use a voltage protection circuit.

8. The device according to claim 5, It is characterized in that The controllable device is a controllable resistor; when the controllable device is in an on state, the controllable resistor is a non-zero resistance; when the controllable device is in an off state, the controllable resistor takes an infinite value.

9. An electronic device, It is characterized in that include: processor; a memory for storing a computer program executable by the processor; The processor is configured to execute the computer program in the memory to implement the steps of the method according to any one of claims 1 to 4.

10. A computer-readable storage medium, It is characterized in that When the executable computer program in the storage medium is executed by a processor, the steps of the method according to any one of claims 1 to 4 can be implemented.

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