CN104901401A - Charging method and charging system - Google Patents
Charging method and charging system Download PDFInfo
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- CN104901401A CN104901401A CN201510268635.4A CN201510268635A CN104901401A CN 104901401 A CN104901401 A CN 104901401A CN 201510268635 A CN201510268635 A CN 201510268635A CN 104901401 A CN104901401 A CN 104901401A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The invention discloses a charging method and a charging system. The charging method includes that a charger charges a battery with a first charging current through a first charging channel, the first charging channel is closed after the voltage value of the charged battery reaches a predetermined voltage value, and the charger charges the battery with a second charging current through a second charging channel. Since the circuit structures of the first charging channel and the second charging channel are different, the energy loss of the first charging channel is substantially lower than that of the second charging channel during a charging process, the energy loss during the entire charging process is reduced, and the charging efficiency is improved. Since the first charging current is greater than the second charging current, i.e. the first charging channel bears greater charging current, the charging time is shortened, and rapid charging of the battery is realized.
Description
Technical field
The present invention relates to electricity field, particularly relate to a kind of charging method and charging system.
Background technology
Along with the develop rapidly of smart mobile phone, the function achieved by it gets more and more, the screen supported is increasing, thus causes the power consumption of smart mobile phone increasing, and the cruising time of the battery in smart mobile phone is shorter and shorter.In order to normally use smart mobile phone, just need not timing be in smart mobile phone battery charging.
Traditional charging technique comprises switched charge and linear-charging, and wherein, the charge efficiency of switched charge is usually about 85%, and the charge efficiency of linear-charging, usually about 70%, both exists the problem that hear rate is large.In addition, no matter switched charge or the linear-charging of traditional charging technique, it all cannot support that super-large current charges, thus cannot realize the quick charge of battery, and then reduces the Experience Degree of people to smart mobile phone.
Therefore, need to provide a kind of charging method and charging system, to solve the problems of the technologies described above.
Summary of the invention
The technical problem that the present invention mainly solves is to provide a kind of charging method and charging system, while can improving charge efficiency, minimizing charging hear rate, realizes quick charge.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: provide a kind of charging method, the method comprises: charged to battery with the first charging current by the first charge tunnel by charger; Detect the magnitude of voltage of the battery after charging, and judge whether the magnitude of voltage of the battery after charging reaches scheduled voltage; If the magnitude of voltage of the battery after charging reaches scheduled voltage, then close the first charge tunnel, and with the second charging current, battery is charged by the second charge tunnel by charger; Wherein, the second charging current is less than the first charging current; Wherein, the first charge tunnel is different with the circuit structure of the second charge tunnel, makes the energy loss of the first charge tunnel in charging process lower than the second charge tunnel.
Wherein, detect the magnitude of voltage of battery after charging, and judge that the step whether magnitude of voltage of the battery after charging reaches scheduled voltage comprises further: judge whether the first charging current is less than pre-set current value; If the magnitude of voltage of the battery after charging reaches scheduled voltage, then close the first charge tunnel, and with the second charging current, the step that battery charges is comprised by the second charge tunnel by charger: if the magnitude of voltage of the battery after charging reaches scheduled voltage, but the first charging current is greater than pre-set current value, then reduce the first charging current in a stepwise manner, and return the step of with the first charging current, battery being charged by the first charge tunnel by charger; If the magnitude of voltage of the battery after charging reaches scheduled voltage, and the first charging current is less than pre-set current value, then close the first charge tunnel, and is charged to battery with the second charging current by the second charge tunnel by charger.
Wherein, before the step of being charged to battery with the first charging current by the first charge tunnel by charger, the method comprises step further: control charger by the first charge tunnel and cell communication by control module; The current output value adjusting charger according to fast charge protocol by control module is the first charging current.
For solving the problems of the technologies described above, another technical solution used in the present invention is: provide a kind of charging system, this charging system comprises charger, the first charge tunnel, the second charge tunnel, control module and battery, wherein, charger is charged to battery with the first charging current by the first charge tunnel; Control module detects the magnitude of voltage of the battery after charging, and judges whether the magnitude of voltage of the battery after charging reaches scheduled voltage; If the magnitude of voltage of the battery after control module detects charging reaches scheduled voltage, control module closes the first charge tunnel, and charger is charged to battery with the second charging current by the second charge tunnel; Wherein, the second charging current is less than the first charging current; Wherein, the first charge tunnel is different with the circuit structure of the second charge tunnel, makes the energy loss of the first charge tunnel in charging process lower than the second charge tunnel.
Wherein, control module detects the magnitude of voltage of the battery after charging, and after judging whether the magnitude of voltage of the battery after charging reaches the operation of scheduled voltage, control module judges whether the first charging current is less than pre-set current value; If the magnitude of voltage of the battery after control module detects charging reaches scheduled voltage, but when the first charging current is greater than pre-set current value, charger is reduced the first charging current in a stepwise manner and continues to perform the operation of being charged to battery with the first charging current by the first charge tunnel; If the magnitude of voltage of the battery after control module detects charging reaches scheduled voltage, but when the first charging current is less than pre-set current value, control module closes the first charge tunnel, and charger is charged to battery with the second charging current by the second charge tunnel.
Wherein, charger comprises: input module, is coupled to AC power, and the alternating current for inputting AC power carries out rectifying and wave-filtering to produce primary direct current; Transformer, is coupled to input module, for modulating primary direct current and being transformed to load alternating current; Output module, is coupled to transformer, for carrying out rectifying and wave-filtering to load alternating current to produce load DC electricity; Charging inlet, is coupled between output module and described battery, charges to battery to utilize load DC electricity; Current feedback module, current feedback module comprises multiple current feedback unit, the combination of wherein different current feedback unit corresponds to the different target current output value of load DC electricity, current feedback module receives the selection signal that feedback control module exports, and according at least one the current feedback unit selected in the multiple current feedback unit of signal behavior; Transformer control module, is coupled between selected current feedback unit and transformer, and then control load galvanic actual current output valve equals target current output valve corresponding to selected current feedback unit; Wherein, in charging process, the selection signal that control module is exported by the magnitude of voltage adjustment feedback control module arranged at least one terminal of charging inlet, and then the actual current output valve of adjustment load DC electricity.
Wherein, transformer comprises the primary coil be connected with input module, transformer control module comprises the first switch element and control chip, first switch element is connected with primary coil, control chip is connected with the first switch element and is controlled the first switch element intermittent conduction by pulse width modulation mode and then modulate the primary direct current flowing through the first switch element from primary coil, each current feedback unit comprises an optoelectronic isolating element and a shunt resistance, the photo detector correspondence of optoelectronic isolating element connects shunt resistance, the selection signal-selectivity conducting that the light-emitting component of optoelectronic isolating element exports according to feedback control module, and then select different shunt resistances form different shunt circuits from the first switch element and modulate the electric current flowing through the first switch from primary coil, the further connection control chip of high-pressure side of selected shunt resistance, control chip fixes the voltage of the high-pressure side of shunt resistance.
Wherein, charging inlet is USB interface, and feedback control module supports quick charge standard agreement, the selection signal that control module is exported by the magnitude of voltage adjustment feedback control module arranged in two data terminal of USB interface according to fast charge protocol.
Wherein, first charge tunnel comprises the first metal-oxide-semiconductor, second metal-oxide-semiconductor and the 3rd metal-oxide-semiconductor, charger is connected with battery with the second metal-oxide-semiconductor by the first metal-oxide-semiconductor, 3rd metal-oxide-semiconductor is used for selectivity conducting first metal-oxide-semiconductor and the second metal-oxide-semiconductor under the control of control module, is charged by the first charge tunnel to make charger to battery.
Wherein, second charge tunnel comprises power transistor and the 4th metal-oxide-semiconductor, the emitter of power transistor is connected with charger, the collector electrode of power transistor is connected with battery, 4th metal-oxide-semiconductor is used for the emitter and collector of selectivity conducting power transistor under the control of control module, to make charger by the second charge tunnel to battery
The invention has the beneficial effects as follows: the situation being different from prior art, charging method of the present invention and charging system are charged to battery with the first charging current by the first charge tunnel by charger, detect the magnitude of voltage of the battery after charging, if the magnitude of voltage of the battery after charging reaches scheduled voltage, then close the first charge tunnel, and with the second charging current, battery is charged by the second charge tunnel by charger.By the way, because the first charge tunnel is different with the circuit structure of the second charge tunnel, thus make the energy loss of the first charge tunnel in charging process well below the second charge tunnel, and then reduce the energy loss in whole charging process, improve charge efficiency.In addition, because the first charging current is greater than the second charging current, also namely the first charge tunnel can bear larger charging current, thus significantly can reduce the charging interval, realizes the quick charge of battery.
Accompanying drawing explanation
Fig. 1 is the structural representation of the charging system of the embodiment of the present invention;
Fig. 2 is the structural representation of charger in Fig. 1;
Fig. 3 is the circuit theory diagrams of charger shown in Fig. 2;
Fig. 4 is the output voltage of charger shown in Fig. 3 and the curve chart of output current;
Fig. 5 is the circuit theory diagrams of the first charge tunnel in Fig. 1;
Fig. 6 is the circuit theory diagrams of the second charge tunnel in Fig. 1;
Fig. 7 is the charge graph of the embodiment of the present invention;
Fig. 8 is the flow chart of the charging method of the embodiment of the present invention.
Embodiment
Some vocabulary is employed to censure specific assembly in the middle of specification and claims.One of skill in the art should understand, and same assembly may be called with different nouns by manufacturer.This specification and claims book is not used as with the difference of title the mode distinguishing assembly, but is used as the benchmark of differentiation with assembly difference functionally." couple " mentioned in the middle of specification and claims in the whole text one word comprises directly any at this and/or indirectly electrically couples means.Therefore, if describe first device in literary composition to be coupled to the second device, then represent first device and directly can electrically be coupled to the second device, or be indirectly electrically coupled to the second device through other device or the means that couple.Below in conjunction with drawings and Examples, the present invention is described in detail
Fig. 1 is the structural representation of the charging system of the embodiment of the present invention.As shown in Figure 1, charging system comprises charger 1, first charge tunnel 2, second charge tunnel 3, control module 4 and battery 5.
Control module 4 is connected with charger 1, first charge tunnel 2, second charge tunnel 3, control module 4 and battery 5 respectively.
Wherein, control module 4 is connected with charger 1, for adjusting the current output value of charger 1.
Please also refer to the structural representation that Fig. 2, Fig. 2 are chargers in Fig. 1.As shown in Figure 2, charger 1 comprises input module 11, transformer 12, output module 13, charging inlet 14, current feedback module 15, feedback control module 16 and transformer control module 17.
Input module 11 is coupled to AC power, and the alternating current for inputting AC power carries out rectifying and wave-filtering to produce primary direct current.
Transformer 12 is coupled to input module 11, modulates for the primary direct current produced input module 11 and is transformed to load alternating current.
Output module 13 is coupled to transformer 12, and the load alternating current for producing transformer 12 carries out rectifying and wave-filtering to produce load DC electricity.
Charging inlet 14 is coupled between output module 13 and battery 5, charges to battery 5 to utilize load DC electricity.
Current feedback module 15 is coupled to feedback control module 16, current feedback module 15 comprises multiple current feedback unit, the combination of wherein different current feedback unit corresponds to the different target current output value of load DC electricity, current feedback module 15 receives the selection signal that feedback control module 16 exports, and according at least one the current feedback unit selected in the multiple current feedback unit of signal behavior.
Transformer control module 17 is coupled between selected current feedback unit and transformer 12, equals target current output valve corresponding to selected current feedback unit for the galvanic real output value of control load.
Wherein, in charging process, the selection signal that control module 4 is exported by the magnitude of voltage adjustment feedback control module 16 arranged at least one terminal of charging inlet 14, and then the actual current output valve of adjustment load DC electricity.
Please also refer to the circuit theory diagrams that Fig. 3, Fig. 3 are chargers shown in Fig. 2.As shown in Figure 3, input module 11 comprises first input end 111, second input 112, first output 113 and the second output 114.Transformer 12 comprises primary coil 121 and secondary coil 124.Output module 13 comprises rectifier diode D1 and electric capacity C1.Charging inlet 14 comprises the first data terminal D+ and the second data terminal D-.Current feedback module 15 comprises multiple current feedback unit, each current feedback unit bag one optoelectronic isolating element and a shunt resistance.Wherein, the photo detector of optoelectronic isolating element correspondence connects shunt resistance, the selection signal-selectivity conducting that the light-emitting component of optoelectronic isolating element exports according to feedback control module 16, and then selects different shunt resistances to be connected with transformer control module 17.In the present embodiment, comprise three current feedback unit for current feedback module 15 to be described.Feedback control module 16 comprises the first selection signal output part N1, second and selects signal output part N2, the 3rd to select signal output part N3, the first data input pin D1 and the second data input pin D2.Transformer control module 17 comprises the first switch element Q1 and control chip U1.
Specifically, the first input end 111 of input module 11 and the second input 112 are connected with the live wire L of alternating current and zero line N respectively, and the first output 113 is connected with the first end 122 of primary coil 121, and the second output 114 is connected with earth signal GND.
In the present embodiment, input module 11 is bridge rectifier filter circuit, the first input end 111 of input module 11 and the second input 112 input AC electricity, alternating current, after the process of input module 11 rectifying and wave-filtering, produces primary direct current and exports the primary coil 121 of transformer 12 between the first output 113 and the second output 114.In other embodiments, input module 11 also can for being different from other filter circuit of bridge rectifier filter circuit, such as three phase rectifier filter circuit etc.
Second end 123 of the primary coil 121 of transformer 12 is connected with transformer control module 17, and wherein, the second end 123 of primary coil 121 is connected with the first switch element Q1 in transformer control module 17, and the first switch element Q1 is connected with control chip U1.
Specifically, first switch element Q1 is injectron, control chip U1 comprises driving pin OUT and current detecting pin CS, second end 123 of primary coil 121 is connected with the drain electrode of the first switch element Q1, the grid of the first switch element Q1 is connected with the driving pin OUT of control chip U1, and the source electrode of the grid of the first switch element Q1 is connected with current feedback module 15 after being connected with the current detecting pin CS of control chip U1.
In the present embodiment, control chip U1 controls the first switch element Q1 intermittent conduction by pulse width modulation mode and then modulates the primary direct current flowing through the first switch element Qi1 from primary coil 121 and be transformed to load alternating current.
The secondary coil 124 of transformer 12 is connected with output module 13, specifically, the first end 125 of secondary coil 124 is connected with the anode of rectifier diode D1, electric capacity C1 is connected in series between the negative electrode of rectifier diode D1 and the second end 126 of secondary coil 124, and the second end 126 of secondary coil 124 is connected with earth signal GND.
In the present embodiment, the rectifier diode D1 in output module 13 and electric capacity C1 carries out rectifying and wave-filtering to the load alternating current produced in secondary coil 124, thus at the common node place output loading direct current of rectifier diode D1 and electric capacity C1.
Current feedback module 15 is connected with feedback control module 16 and transformer control module 17 respectively.In the present embodiment, current feedback module 15 comprises the first current feedback unit 151, second current feedback unit 152 and the 3rd current feedback unit 153.Wherein, first current feedback unit 151 comprises the first optoelectronic isolating element Phi1 and the first shunt resistance Ri1, second current feedback unit 152 comprises the second optoelectronic isolating element Phi2 and the second shunt resistance Ri2, and the 3rd current feedback unit 153 comprises the 3rd optoelectronic isolating element Phi3 and the 3rd shunt resistance Ri3.
Specifically, in current feedback module 15, one end of first shunt resistance Ri1, the second shunt resistance Ri2 and the 3rd shunt resistance Ri3 is connected to each other and is connected to the current detecting pin CS of control chip U1 in transformer control module 17, wherein, the magnitude of voltage Vcs of the current detecting pin CS of control chip U1 is fixed value.First shunt resistance Ri1, second shunt resistance Ri2, the other end of the 3rd shunt resistance Ri3 respectively with the first corresponding optoelectronic isolating element Phi1, second optoelectronic isolating element Phi2, the collector electrode of the 3rd optoelectronic isolating element Phi3 connects, first optoelectronic isolating element Phi1, second optoelectronic isolating element Phi2, the emitter signal GND connected to one another and to ground of the 3rd optoelectronic isolating element Phi3, first optoelectronic isolating element Phi1, second optoelectronic isolating element Phi2, the anode of the 3rd optoelectronic isolating element Phi3 is connected to each other and is connected to the common node place of rectifier diode D1 and electric capacity C1, the negative electrode of the first optoelectronic isolating element Phi1 and first of feedback control module 16 selects information output N1 to be connected, the negative electrode of the second optoelectronic isolating element Phi2 and second of feedback control module 16 selects information output N2 to be connected, the negative electrode of the 3rd optoelectronic isolating element Phi3 and the 3rd of feedback control module 16 the selects information output N3 to be connected.
Preferably; current feedback module 15 comprises current-limiting resistance Ra further; current-limiting resistance Ra is serially connected with the first optoelectronic isolating element Phi1, the second optoelectronic isolating element Phi2, the anode of the 3rd optoelectronic isolating element Phi3 and the common node place of rectifier diode D1 and electric capacity C1; flow through the electric current of the first optoelectronic isolating element Phi1, the second optoelectronic isolating element Phi2, the 3rd optoelectronic isolating element Phi3 in order to restriction, protect the first optoelectronic isolating element Phi1, the second optoelectronic isolating element Phi2, the 3rd optoelectronic isolating element Phi3 normally to work.
Feedback control module 16 is connected with charging inlet 14.Specifically, the first data input pin D1 of feedback control module 16 is connected with the first data terminal D+ of charging inlet 14, the second data input pin D2 of feedback control module 16 and the second data terminal D of charging inlet 14-be connected.In the present embodiment, feedback control module 16 supports quick charge standard agreement, and charging inlet 14 is USB interface.It will be understood by those skilled in the art that in other embodiments, charging inlet 14 also can for being different from other interface of USB interface, and the present invention is not as limit.
In the present embodiment, in charging process, the selection signal that control module 4 is exported by the magnitude of voltage adjustment feedback control module 16 of the first data terminal D+ and the second data terminal D-that arrange charging inlet 14, and then select the first shunt resistance Ri1, at least one and the first switch element Qi1 in second shunt resistance Ri2 and the 3rd shunt resistance Ri3 form shunt circuit and modulate the electric current flowing through the first switch element Qi1 from primary coil 211, and then make the actual current output valve of load DC electricity equal target current output valve corresponding to selected shunt resistance.In addition, in charging process, the virtual voltage output valve of load DC electricity remains unchanged.
Specifically, if the magnitude of voltage that control module 4 arranges the first data terminal D+ of charging inlet 14 is the first voltage, when the magnitude of voltage of the second data terminal D-is the first voltage, feedback control module 16 is selected signal output part N3 to export through the 3rd and is selected signal, control the light-emitting component conducting of the 3rd optoelectronic isolating element Phi1, and then select the 3rd shunt resistance Ri3 and the first switch element Qi1 to form shunt circuit with the target current output valve making power supply export the first rated current.
If the magnitude of voltage that control module 4 arranges the first data terminal D+ of charging inlet 14 is the second magnitude of voltage, when the magnitude of voltage of the second data terminal D-is the first magnitude of voltage, feedback control module 16 is selected signal output part N2 and the 3rd to select signal output part N3 to export through second and is selected signal, control the second corresponding optoelectronic isolating element Phi2 and the light-emitting component conducting of the 3rd optoelectronic isolating element Phi3, and then select the second shunt resistance Ri2, shunt circuit is formed with the first switch element Qi1 with the target current output valve making power supply export the second rated current after 3rd shunt resistance Ri3 parallel connection.
If the magnitude of voltage that control module 4 arranges the first data terminal D+ of charging inlet 14 is the first magnitude of voltage, when the magnitude of voltage of the second data terminal D-is third voltage value, feedback control module 16 selects signal output part N1 through first, second selects signal output part N2 and the 3rd to select signal output part N3 to export selects signal, control the first corresponding optoelectronic isolating element Phi1, the light-emitting component conducting of the second optoelectronic isolating element Phi2 and the 3rd optoelectronic isolating element Phi3, and then select the first shunt resistance Ri1, second shunt resistance Ri2, shunt circuit is formed with the first switch element Qi1 with the target current output valve making power supply export the 3rd rated current after 3rd shunt resistance Ri3 parallel connection.
Formula according to the galvanic current output value of transformer computational load:
Iout＝Vcs*Np/Ns/Rin；
Wherein, Iout is current output value, and Vcs is the magnitude of voltage at the current detecting pin CS place of control chip U1, and Np is the number of turn of primary coil 121, and Ns is the number of turn of secondary coil 124, and Rin is the resistance of the shunt resistance chosen.
In above-mentioned formula, the voltage Vcs at the current detecting pin CS place of control chip U1, the number of turn Np of primary coil 121, the number of turn Ns of secondary coil 124 are fixed value, now, the target current output valve by choosing different shunt resistance Rin can obtain different power supplys.
Specifically, the magnitude of voltage arranging the first data terminal D+ of charging inlet 14 when control module 4 is the first voltage, when the magnitude of voltage of the second data terminal D-is the first voltage, the resistance of the shunt resistance Rin chosen is the resistance of the 3rd shunt resistance Ri3, and current output value is the first rated current XA.The magnitude of voltage arranging the first data terminal D+ of charging inlet 14 when control module 4 is the second magnitude of voltage, when the magnitude of voltage of the second data terminal D-is the first voltage, the resistance of the shunt resistance Rin chosen is the resistance after the second shunt resistance Ri2, the 3rd shunt resistance Ri3 parallel connection, and current output value is the second rated current YA.The magnitude of voltage arranging the first data terminal D+ of charging inlet 14 when control module 4 is the first magnitude of voltage, when the magnitude of voltage of the second data terminal D-is third voltage value, the resistance of the shunt resistance Rin chosen is the resistance after the first shunt resistance Ri1, the second shunt resistance Ri2, the 3rd shunt resistance Ri3 parallel connection, and current output value is the 3rd rated current ZA.
Preferably, the first magnitude of voltage is 0.6V, and the second magnitude of voltage is 3.3V, and third voltage value is ground (GND) voltage.
In actual applications, feedback control module 16 can be multiple, each feedback control module 16 connects multiple current feedback unit respectively, with under the control of the selection signal exported in each feedback control module 16, select at least one the current feedback unit in corresponding multiple current feedback unit, and then power supply can be exported be three times in the mutually different target current output valve of feedback control module 16 quantity.That is, when feedback control module 16 is N number of, each feedback control module 16 connects three current feedback unit respectively, thus makes power supply can export 3N mutually different target current output valve.
It should be noted that those skilled in the art can make the amendment on circuit completely according to the function of current feedback module 15 realization in the present embodiment.Such as, utilize relay to replace optoelectronic isolating element etc., the present invention is not restricted to the concrete circuit implementation of current feedback module 15, only need meet the function that it realizes.
The output voltage of charger shown in Fig. 3 and the curve chart of output current please also refer to Fig. 4, Fig. 4.As shown in Figure 3, I axle is the output current of charger, and V axle is the output voltage of charger.As seen from Figure 4, the first rated current XA is less than the second rated current YA and the second rated current YA is less than the 3rd rated current ZA.
Please continue to refer to Fig. 1, in FIG, control module 4 is connected with the first charge tunnel 2, opens to be communicated with connecting path that charger 1 is connected with battery 5 by the first charge tunnel 2 for controlling the first charge tunnel 2 and closes to disconnect for controlling the first charge tunnel 2 connecting path that charger 1 is connected with battery 5 by the first charge tunnel 2.
Please also refer to the circuit theory diagrams that Fig. 5, Fig. 5 are the first charge tunnels in Fig. 1.As shown in Figure 5, the first charge tunnel 2 comprises the first metal-oxide-semiconductor Q1, the second metal-oxide-semiconductor Q2 and the 3rd metal-oxide-semiconductor Q3.
Wherein, charger 1 is connected with battery 5 with the second metal-oxide-semiconductor Q2 by the first metal-oxide-semiconductor Q1,3rd metal-oxide-semiconductor Q3 is used for selectivity conducting first metal-oxide-semiconductor Q1 and the second metal-oxide-semiconductor Q2 under the control of control module 4, is charged by the first charge tunnel 2 to make charger 1 to battery 5.
Specifically, the drain electrode of the first metal-oxide-semiconductor Q1 is connected with the common node of the rectifier diode D1 of charger in Fig. 31 and electric capacity C1, the source electrode of the first metal-oxide-semiconductor Q1 is connected with the source electrode of the second metal-oxide-semiconductor Q2 and is connected with the drain electrode of the 3rd metal-oxide-semiconductor Q3 afterwards, the grid of the first metal-oxide-semiconductor Q1 is connected with the grid of the second metal-oxide-semiconductor Q2 and is connected with the drain electrode of the 3rd metal-oxide-semiconductor Q3 afterwards, the drain electrode of the second metal-oxide-semiconductor Q2 is connected with battery 5, the grid of the 3rd metal-oxide-semiconductor Q3 is connected with control module 4, and the source electrode of the 3rd metal-oxide-semiconductor Q3 is connected with earth signal GND.
Preferably, the first charge tunnel 2 also comprises the first resistance R1 and the second resistance R2.One end of first resistance R1 is connected with the grid of the 3rd metal-oxide-semiconductor Q3, the other end of the first resistance R1 is connected with the source electrode of the 3rd metal-oxide-semiconductor Q3, one end of second resistance R2 is connected with the common node of the source electrode of the second metal-oxide-semiconductor Q2 with the source electrode of the first metal-oxide-semiconductor Q1, and the other end of the second resistance R2 is connected with the drain electrode of the 3rd metal-oxide-semiconductor Q3.Wherein, the first resistance R1 second resistance R2 flows through the electric current of the first metal-oxide-semiconductor Q1, the second metal-oxide-semiconductor Q2 and the 3rd metal-oxide-semiconductor Q3 in order to restriction, protects the normal work of the first metal-oxide-semiconductor Q1, the second metal-oxide-semiconductor Q2 and the 3rd metal-oxide-semiconductor Q3.
If control module 4 opens to be communicated with for controlling the first charge tunnel 2 connecting path that charger 1 is connected with battery 5 by the first charge tunnel 2, control module 4 exports high level signal to the grid of the 3rd metal-oxide-semiconductor Q3.After the grid of the 3rd metal-oxide-semiconductor Q3 receives high level signal, the source electrode of the 3rd metal-oxide-semiconductor Q3 and drain electrode conducting, thus drive source electrode and the drain electrode conducting of the first metal-oxide-semiconductor Q1 and the second metal-oxide-semiconductor Q2, and then charger 1 can be charged to battery 5 by the first metal-oxide-semiconductor Q1 and the second metal-oxide-semiconductor Q2.
If control module 4 closes to disconnect for controlling the first charge tunnel 2 connecting path that charger 1 is connected with battery 5 by the first charge tunnel 2, control module 4 is to the grid output low level signal of the 3rd metal-oxide-semiconductor Q3.After the grid of the 3rd metal-oxide-semiconductor Q3 receives low level signal, source electrode and the drain electrode of the 3rd metal-oxide-semiconductor Q3 disconnect, thus drive the source electrode of the first metal-oxide-semiconductor Q1 and the second metal-oxide-semiconductor Q2 and drain electrode to disconnect, and then the connecting path that charger 1 is connected with battery 5 by the first metal-oxide-semiconductor Q1 and the second metal-oxide-semiconductor Q2 disconnects.
Wherein, charger 1 is undertaken in the process of charging to battery 5 by the first charge tunnel 2, because the internal resistance of the first metal-oxide-semiconductor Q1 and the second metal-oxide-semiconductor Q2 is very little, the first charge tunnel 2 can bear larger charging current, meanwhile, the charge efficiency of the first charge tunnel 2 is high, energy loss is little.
The charging current exporting 5A with charger 1 is charged to battery 5, the internal resistance of the first metal-oxide-semiconductor Q1 and the second metal-oxide-semiconductor Q2 is 0.01 Europe, the magnitude of voltage of battery 5 is 4.0V is example, and energy loss is 0.02 × 5 × 5=0.5W, and charge efficiency is (4.0-0.02 × 5)/4.0=97.5%.It is compared with common 5.0V/1.0A switched charge, energy loss also will less, efficiency is taller.
Please continue to refer to Fig. 1, in FIG, control module 4 is connected with the second charge tunnel 3, opens to be communicated with connecting path that charger 1 is connected with battery 5 by the second charge tunnel 3 for controlling the second charge tunnel 3 and closes to disconnect for controlling the second charge tunnel 3 connecting path that charger 1 is connected with battery 5 by the second charge tunnel 3.
Please also refer to the circuit theory diagrams that Fig. 6, Fig. 6 are the second charge tunnels in Fig. 1.As shown in Figure 6, the second charge tunnel 3 comprises power transistor PA and the 4th metal-oxide-semiconductor Q4.
The emitter of power transistor PA is connected with charger 1, and the collector electrode of power transistor PA is connected with battery 5, and the base stage of power transistor PA is connected with the drain electrode of the 4th metal-oxide-semiconductor Q4, and the grid of the 4th metal-oxide-semiconductor Q4 is connected with control module 4 respectively with source electrode.Wherein, the emitter and collector of the 4th metal-oxide-semiconductor Q4 selectivity conducting power transistor PA under the control of control module 4, can be charged to battery 5 by the second charge tunnel 3 to make charger 1.
Preferably, the second charge tunnel 3 also comprises the 3rd resistance R3, and one end of the 3rd resistance R3 is connected with the emitter of power transistor PA, and the other end of the 3rd resistance R3 is connected with the grid of the 4th metal-oxide-semiconductor Q4.
If when control module 4 opens to be communicated with for controlling the second charge tunnel 3 connecting path that charger 1 is connected with battery 5 by the second charge tunnel 3, control module 4 exports high level signal to the grid of the 4th metal-oxide-semiconductor Q4 and source electrode.After the grid of the 4th metal-oxide-semiconductor Q4 receives high level signal, the source electrode of the 4th metal-oxide-semiconductor Q4 and drain electrode conducting, simultaneously the source electrode of the 4th metal-oxide-semiconductor Q4 receives high level signal and makes the base stage of power transistor PA be in high level, thus drive the emitter and collector conducting of power transistor PA, and then charger 1 can be charged to battery 5 by power transistor PA.
If when control module 4 closes to disconnect for controlling the second charge tunnel 3 connecting path that charger 1 is connected with battery 5 by the second charge tunnel 3, control module 4 exports high level signal and source electrode output low level signal to the grid of the 4th metal-oxide-semiconductor Q4.After the grid of the 4th metal-oxide-semiconductor Q4 receives high level signal, the source electrode of the 4th metal-oxide-semiconductor Q4 and drain electrode conducting, simultaneously the source electrode of the 4th metal-oxide-semiconductor Q4 receives low level signal and makes the base stage of power transistor PA be in low level, thus make power transistor PA be in cut-off state, and then the connecting path that charger 1 is connected with battery 5 by power transistor PA disconnects.
Wherein, the constant-current constant-voltage charging that the second charge tunnel 3 can realize battery 5 reaches capacity to make the capacitance of battery 5.
Wherein, charger 1 is undertaken in the process of charging to battery 5 by the second charge tunnel 3, and charge efficiency is about 85%, and the charging current exporting 2A with charger 1 calculates to battery 5 charging, almost has the hear rate of 1.5W.
Those skilled in the art will appreciate that the present invention is not restricted to the concrete circuit implementation of the first charge tunnel 2 and the second charge tunnel 3, only need meet the function that it realizes.
Please continue to refer to Fig. 1, in FIG, the first charge tunnel 2 is different with the circuit structure of the second charge tunnel 3, first charge tunnel 2 is compared with the second charge tunnel 3, the charging current that first charge tunnel 2 can bear is larger, and energy loss is less, and charge efficiency is higher.
Control module 4 is connected with battery 5, for detecting the magnitude of voltage of the charging current of battery 5 and the battery 5 after charging and operating accordingly according to the result detected.
Specifically, first control module 4 controls the first charge tunnel 2 and opens to be communicated with the connecting path that charger 1 is connected with battery 5 by the first charge tunnel 2, then control module 4 is the first charging current according to the current output value of fast charge protocol adjustment charger 1, and charger 1 is charged to battery 5 with the first charging current by the first charge tunnel 2 subsequently.In the process that battery 5 charges, control module 4 detects the magnitude of voltage of the battery 5 after charging, and judges whether the magnitude of voltage of the battery 5 after charging reaches scheduled voltage.Wherein, if the magnitude of voltage of the battery 5 after control module 4 detects charging does not reach scheduled voltage, charger 1 continues to perform the operation of being charged to battery 5 with the first charging current by the first charge tunnel 2, if the magnitude of voltage of the battery after control module 4 detects charging reaches scheduled voltage, control module 4 controls the first charge tunnel 2 and closes to disconnect the connecting path that charger 1 is connected with battery 5 by the first charge tunnel 2, control the second charge tunnel 3 simultaneously and open to be communicated with the connecting path that charger 1 is connected with battery 5 by the second charge tunnel 3, then control module 4 is the second charging current according to the current output value of fast charge protocol adjustment charger 1, charger 1 is charged to battery 5 with the second charging current by the second charge tunnel 3 subsequently.
Preferably, in order to reduce energy loss further, charger 1 is charged to battery 5 with the first charging current by the first charge tunnel 2 until after the magnitude of voltage of battery 5 reaches scheduled voltage, control module 4 judges whether the first charging current is less than pre-set current value further.If the first charging current is greater than pre-set current value, control module 4 controls charger 1 and reduces the first charging current in a stepwise manner, and repeat the operation that above-mentioned charger 1 charged to battery 5 with the first charging current by the first charge tunnel 2, until the first charging current after reducing is less than pre-set current value.If the first charging current is less than pre-set current value, control module 4 is closed the first charge tunnel 2 and is opened the second charge tunnel 3, charger 1 is charged to battery with the second charging current by the second charge tunnel 3, and wherein, the second charging current is less than the first charging current.
Please also refer to the charge graph that Fig. 7, Fig. 7 are the embodiment of the present invention.As shown in Figure 7, T axle is the time, and I axle is charging current.
Composition graphs 1, Fig. 4 and Fig. 7, first, control module 4 controls the first charge tunnel 2 and opens to be communicated with the connecting path that charger 1 is connected with battery 5 by the first charge tunnel 2, then control module 4 adjusts the current output value of charger 1 is the 3rd rated current ZA, and charger 1 is charged until the magnitude of voltage of battery 5 reaches scheduled voltage to battery 5 with the 3rd rated current ZA by the first charge tunnel 2 subsequently.
Subsequently, the current output value that control module 4 adjusts charger 1 is the second rated current YA, and charger 1 continues through the first charge tunnel 2 and charges until the magnitude of voltage of battery reaches scheduled voltage to battery 5 with the second rated current YA.
Finally, control module 4 controls the first charge tunnel 2 and closes to disconnect the connecting path that charger 1 is connected with battery 5 by the first charge tunnel 2, control the second charge tunnel 3 simultaneously and open to be communicated with the connecting path that charger 1 is connected with battery 5 by the second charge tunnel 3, then control module 4 adjusts the current output value of charger 1 is the first rated current XA, and charger 1 completes follow-up constant-current constant-voltage charging process by the second charge tunnel 3 with the first rated current XA subsequently.
It will be appreciated by those skilled in the art that; the present invention is charged as example to be described to battery by the first charge tunnel with two kinds of different charging currents in the figure 7; the present invention is not as limit; the present invention also can be charged to battery by the first charge tunnel with the multiple charging current being different from two kinds, and it is also in protection scope of the present invention.
Fig. 8 is the flow chart of the charging method of the embodiment of the present invention, and the charging method shown in Fig. 8 is based on the charging system shown in Fig. 1.If it is noted that there is result identical in fact, method of the present invention is not limited with the flow sequence shown in Fig. 8.As shown in Figure 8, the method comprises the steps:
Step S101: control charger 1 by control module 4 and be communicated with battery 5 by the first charge tunnel 2.
In step S101, the first charge tunnel 2 comprises the first metal-oxide-semiconductor Q1, the second metal-oxide-semiconductor Q2 and the 3rd metal-oxide-semiconductor Q3.Control by control module 4 step that charger 1 is communicated with battery 5 by the first charge tunnel 2 to be specially: control module 4 exports high level signal to the grid of the 3rd metal-oxide-semiconductor Q3, after the grid of the 3rd metal-oxide-semiconductor Q3 receives high level signal, the source electrode of the 3rd metal-oxide-semiconductor Q3 and drain electrode conducting, thus drive source electrode and the drain electrode conducting of the first metal-oxide-semiconductor Q1 and the second metal-oxide-semiconductor Q2, and then charger 1 can be charged to battery 5 by the first metal-oxide-semiconductor Q1 and the second metal-oxide-semiconductor Q2.
Step S102: the current output value adjusting charger 1 according to fast charge protocol by control module 4 is the first charging current.
In step s 102, be specially according to the step that the current output value of fast charge protocol adjustment charger 1 is the first charging current by control module 4: the magnitude of voltage that control module 4 arranges the first data terminal D+ of charging inlet 14 is the first magnitude of voltage, when the magnitude of voltage of the second data terminal D-is third voltage value, feedback control module 16 selects signal output part N1 through first, second selects signal output part N2 and the 3rd to select signal output part N3 to export selects signal, control the first corresponding optoelectronic isolating element Phi1, the light-emitting component conducting of the second optoelectronic isolating element Phi2 and the 3rd optoelectronic isolating element Phi3, and then select the first shunt resistance Ri1, second shunt resistance Ri2, shunt circuit is formed with the first switch element Qi1 with the target current output valve making power supply export the first charging current after 3rd shunt resistance Ri3 parallel connection.Wherein, the first charging current equals the 3rd rated current ZA.
Step S103: battery 5 is charged with the first charging current by the first charge tunnel 2 by charger 1;
In step s 103, with the 3rd rated current ZA, battery 5 is charged by the first charge tunnel 2 by charger 1.
Step S104: the magnitude of voltage detecting the battery after charging, and judge whether the magnitude of voltage of the battery after charging reaches scheduled voltage; If the magnitude of voltage of the battery after charging reaches scheduled voltage, perform step S105, otherwise continue to perform step S103.
In step S104, scheduled voltage is preferably 4.35V, and the magnitude of voltage of the battery after constant current charge being detected reaches 4.35V, continues to perform step S105.
Step S105: judge whether the first charging current is less than pre-set current value; If the first charging current is greater than pre-set current value, perform step S106, otherwise perform step S107.
In step S105, when the first charging current is the 3rd rated current ZA, it is greater than pre-set current value, continues to perform step S106.When the first charging current is the second rated current YA, it is less than pre-set current value, performs step S107.
Step S106: reduce the first charging current in a stepwise manner, and continue to perform step S103.
In step s 106, the step reducing the first charging current is in a stepwise manner specially: the magnitude of voltage that control module 4 arranges the first data terminal D+ of charging inlet 14 is the second magnitude of voltage, when the magnitude of voltage of the second data terminal D-is the first magnitude of voltage, feedback control module 16 is selected signal output part N2 and the 3rd to select signal output part N3 to export through second and is selected signal, control the second corresponding optoelectronic isolating element Phi2 and the light-emitting component conducting of the 3rd optoelectronic isolating element Phi3, and then select the second shunt resistance Ri2, shunt circuit is formed with the first switch element Qi1 with the target current output valve making power supply export the first charging current after 3rd shunt resistance Ri3 parallel connection, wherein, first charging current is the second rated current YA.
Then, with the second rated current YA, battery 5 is charged by the first charge tunnel 2 by charger 1.
Step S107: close the first charge tunnel 2, and with the second charging current, battery 5 is charged by the second charge tunnel 3 by charger 1.
In step s 107, the step of closing the first charge tunnel is specially: control module 4 is to the grid output low level signal of the 3rd metal-oxide-semiconductor Q3, after the grid of the 3rd metal-oxide-semiconductor Q3 receives low level signal, source electrode and the drain electrode of the 3rd metal-oxide-semiconductor Q3 disconnect, thus drive the source electrode of the first metal-oxide-semiconductor Q1 and the second metal-oxide-semiconductor Q2 and drain electrode to disconnect, and then the connecting path that charger 1 is connected with battery 5 by the first metal-oxide-semiconductor Q1 and the second metal-oxide-semiconductor Q2 disconnects.
After closedown first charge tunnel 2, the second charge tunnel 3 is opened by control module 4, then the current output value adjusting charger 1 by control module 4 is the second charging current, finally by charger 1 by the second charge tunnel 3 with the constant-current constant-voltage charging of the complete battery pair 5 of the second charging current.
The current output value adjusting charger 1 by control module 4 is that the step of the second charging current is specially: the magnitude of voltage arranging the first data terminal D+ of charging inlet 14 when control module 4 is the first voltage, when the magnitude of voltage of the second data terminal D-is the first voltage, feedback control module 16 is selected signal output part N3 to export through the 3rd and is selected signal, control the light-emitting component conducting of the 3rd optoelectronic isolating element Phi1, and then select the 3rd shunt resistance Ri3 and the first switch element Qi1 to form shunt circuit with the target current output valve making power supply export the second charging current.Wherein, the second charging current is the first rated current XA.
Be different from the situation of prior art, charging method of the present invention and charging system are charged to battery with the first charging current by the first charge tunnel by charger, detect the magnitude of voltage of the battery after charging, if the magnitude of voltage of the battery after charging reaches scheduled voltage, then close the first charge tunnel, and with the second charging current, battery is charged by the second charge tunnel by charger.By the way, because the first charge tunnel is different with the circuit structure of the second charge tunnel, thus make the energy loss of the first charge tunnel in charging process well below the second charge tunnel, and then reduce the energy loss in whole charging process, improve charge efficiency.In addition, because the first charging current is greater than the second charging current, also namely the first charge tunnel can bear larger charging current, thus significantly can reduce the charging interval, realizes the quick charge of battery.
The foregoing is only embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize specification of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. a charging method, is characterized in that, described method comprises:
With the first charging current, battery is charged by the first charge tunnel by charger;
Detect the magnitude of voltage of the described battery after charging, and judge whether the magnitude of voltage of the described battery after charging reaches scheduled voltage;
If the magnitude of voltage of the described battery after charging reaches scheduled voltage, then close described first charge tunnel, and with the second charging current, described battery is charged by described second charge tunnel by described charger;
Wherein, described second charging current is less than described first charging current;
Wherein, described first charge tunnel is different with the circuit structure of described second charge tunnel, makes the energy loss of the first charge tunnel described in charging process lower than described second charge tunnel.
2. want the charging method described in 1 according to right, it is characterized in that, describedly detect the magnitude of voltage of described battery after charging, and judge that the step whether magnitude of voltage of the described battery after charging reaches scheduled voltage comprises further:
Judge whether described first charging current is less than pre-set current value;
If the magnitude of voltage of the described battery after described charging reaches scheduled voltage, then close described first charge tunnel, and with the second charging current, the step that battery charges comprised by described second charge tunnel by described charger:
If the magnitude of voltage of the described battery after charging reaches scheduled voltage, but described first charging current is greater than pre-set current value, then reduce described first charging current in a stepwise manner, and return described step of with the first charging current, battery being charged by described first charge tunnel by described charger;
If the magnitude of voltage of the described battery after charging reaches scheduled voltage, and described first charging current is less than pre-set current value, then close described first charge tunnel, and with the second charging current, battery is charged by described second charge tunnel by described charger.
3. want the charging method described in 1 according to right, it is characterized in that, before described step of being charged to battery with the first charging current by the first charge tunnel by charger, described method comprises step further:
Charger is controlled by the first charge tunnel and cell communication by control module;
The current output value adjusting described charger according to fast charge protocol by described control module is the first charging current.
4. a charging system, it is characterized in that, described charging system comprises charger, the first charge tunnel, the second charge tunnel, control module and battery, and wherein, described charger is charged to described battery with the first charging current by described first charge tunnel; Described control module detects the magnitude of voltage of the described battery after charging, and judges whether the magnitude of voltage of the described battery after charging reaches scheduled voltage; If the magnitude of voltage of the described battery after described control module detects charging reaches scheduled voltage, described control module closes described first charge tunnel, and described charger is charged to battery with the second charging current by described second charge tunnel; Wherein, described second charging current is less than described first charging current; Wherein, described first charge tunnel is different with the circuit structure of described second charge tunnel, makes the energy loss of the first charge tunnel described in charging process lower than described second charge tunnel.
5. system according to claim 4, it is characterized in that, described control module detects the magnitude of voltage of the described battery after charging, and after judging whether the magnitude of voltage of the described battery after charging reaches the operation of scheduled voltage, described control module judges whether described first charging current is less than pre-set current value;
If the magnitude of voltage of the described battery after described control module detects charging reaches scheduled voltage, but when described first charging current is greater than pre-set current value, described charger is reduced described first charging current in a stepwise manner and continues to perform the operation of being charged to battery with the first charging current by described first charge tunnel;
If the magnitude of voltage of the described battery after described control module detects charging reaches scheduled voltage, but when described first charging current is less than pre-set current value, described control module closes described first charge tunnel, and described charger is charged to battery with the second charging current by described second charge tunnel.
6. charging system according to claim 4, is characterized in that, described charger comprises:
Input module, is coupled to AC power, and the alternating current for inputting described AC power carries out rectifying and wave-filtering to produce primary direct current;
Transformer, is coupled to described input module, for modulating described primary direct current and being transformed to load alternating current;
Output module, is coupled to described transformer, for carrying out rectifying and wave-filtering to described load alternating current to produce load DC electricity;
Charging inlet, is coupled between described output module and described battery, charges to described battery to utilize described load DC electricity;
Current feedback module, described current feedback module comprises multiple current feedback unit, the combination of wherein different described current feedback unit corresponds to the different target current output value of described load DC electricity, described current feedback module receives the selection signal that feedback control module exports, and at least one the current feedback unit in multiple current feedback unit according to described selection signal behavior;
Transformer control module, is coupled between selected described current feedback unit and described transformer, and then the actual current output valve controlling described load DC electricity equals target current output valve corresponding to selected described current feedback unit;
Wherein, in charging process, described control module adjusts the described selection signal of described feedback control module output by the magnitude of voltage arranged at least one terminal of described charging inlet, and then adjusts the described actual current output valve of described load DC electricity.
7. charging system according to claim 6, it is characterized in that, it is characterized in that, described transformer comprises the primary coil be connected with described input module, described transformer control module comprises the first switch element and control chip, described first switch element is connected with described primary coil, described control chip is connected with described first switch element and is controlled described first switch element intermittent conduction by pulse width modulation mode and then modulate the described primary direct current flowing through described first switch element from described primary coil, current feedback unit described in each comprises an optoelectronic isolating element and a shunt resistance, the photo detector correspondence of described optoelectronic isolating element connects described shunt resistance, the selection signal-selectivity conducting that the light-emitting component of described optoelectronic isolating element exports according to described feedback control module, and then select different described shunt resistances form different shunt circuits from described first switch element and modulate the electric current flowing through described first switch from described primary coil, the high-pressure side of selected described shunt resistance connects described control chip further, described control chip fixes the voltage of the described high-pressure side of described shunt resistance.
8. charging system according to claim 7, it is characterized in that, described charging inlet is USB interface, described feedback control module supports quick charge standard agreement, and described control module adjusts the described selection signal of described feedback control module output by the magnitude of voltage arranged in two data terminal of described USB interface according to described fast charge protocol.
9. charging system according to claim 4, it is characterized in that, described first charge tunnel comprises the first metal-oxide-semiconductor, second metal-oxide-semiconductor and the 3rd metal-oxide-semiconductor, described charger is connected with described battery with described second metal-oxide-semiconductor by described first metal-oxide-semiconductor, described 3rd metal-oxide-semiconductor is used for the first metal-oxide-semiconductor described in selectivity conducting and described second metal-oxide-semiconductor under the control of described control module, is charged by described first charge tunnel to make described charger to described battery.
10. charging system according to claim 4, it is characterized in that, described second charge tunnel comprises power transistor and the 4th metal-oxide-semiconductor, the emitter of described power transistor is connected with described charger, the collector electrode of described power transistor is connected with described battery, described 4th metal-oxide-semiconductor is used for the described emitter of power transistor described in selectivity conducting under the control of described control module and described collector electrode, is charged by described second charge tunnel to make described charger to described battery.
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| CN113872300A (en) * | 2021-10-20 | 2021-12-31 | 东莞新能德科技有限公司 | Battery management system, terminal equipment and battery charging and discharging method thereof |
| CN113872300B (en) * | 2021-10-20 | 2024-03-26 | 东莞新能德科技有限公司 | Battery management system, terminal equipment and battery charging and discharging method thereof |
| CN114567055A (en) * | 2022-04-28 | 2022-05-31 | 荣耀终端有限公司 | Charging method and related equipment |
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