CN210985717U - Charging circuit and charger with rectification and power factor correction multiplexing functions - Google Patents
Charging circuit and charger with rectification and power factor correction multiplexing functions Download PDFInfo
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- CN210985717U CN210985717U CN201922231284.6U CN201922231284U CN210985717U CN 210985717 U CN210985717 U CN 210985717U CN 201922231284 U CN201922231284 U CN 201922231284U CN 210985717 U CN210985717 U CN 210985717U
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Abstract
A charging circuit and charger with the multiplexing functions of rectification and power factor correction, the charging circuit includes: multiplexing subassembly, boost assembly and charging assembly; the multiplexing component is connected with an alternating current power supply, is accessed with an alternating current signal output by the alternating current power supply, and obtains a first direct current signal after performing power factor correction and rectification processing on the alternating current signal in sequence; the boosting assembly is connected with the multiplexing assembly and used for boosting the first direct current signal to obtain a second direct current signal; the charging assembly is connected with the multiplexing assembly and the boosting assembly and the equipment to be charged, and the second direct-current signal is subjected to voltage reduction according to the phase of the alternating-current signal so as to charge the equipment to be charged; this embodiment can realize through multiplexing subassembly that electric energy power rectifies and the circuit multiplexing of these two kinds of circuit functions of electric energy rectification, has reduced electronic components's use quantity, and circuit structure is more integrated, simplified, has reduced the power supply control cost to treating battery charging outfit, and practical value is higher.
Description
Technical Field
The application belongs to the technical field of electronic circuits, and particularly relates to a charging circuit and a charger with the functions of rectification and power factor correction multiplexing.
Background
With the rapid development of modern industrial technologies, electronic circuit design and power control draw attention of people, and specific circuit functions can be realized only when electronic equipment needs to be connected with stable electric energy, so that technicians convert the electric energy to meet the actual power supply requirements of various types of electronic equipment, the converted electric energy can completely meet the rated electric energy power of the electronic equipment, the charging safety and stability of the electronic equipment have extremely important significance for the practical value of the electronic equipment, and the electronic equipment is connected with the safe electric energy to maintain the rated operation state for a long time.
In the traditional technology, in the process of controlling the charging of the electronic equipment, a complex circuit is needed to realize the electric energy conversion, and the electric energy regulation function is single, the operation steps are complex, and the charging cost is high; for example, for a charger, a high-frequency transformer is required for power transmission in the conventional technology, but the volume of the transformer is limited by the switching frequency, and theoretically, the higher the switching frequency is, the smaller the volume can be, and since the switching frequency of a power switching tube is limited and the voltage regulation range of the transformer is narrow, a system main controller is required for electric energy centralized control, so that the volume of the whole charger is too large, the transformer cannot realize a power correction function, and the converted electric energy has low quality.
Therefore, the circuit structure of the charging control circuit in the conventional technology is complex, the multifunctional electric energy conversion function cannot be integrated, the charging control cost is high, and the power supply power requirements of various electronic devices cannot be met.
SUMMERY OF THE UTILITY MODEL
In view of this, an embodiment of the present application provides a charging circuit and a charger having a multiplexing function of rectification and power factor correction, which aim to solve the problems that in the charging control process of an electronic device in the conventional technical scheme, the cost of the charging circuit is high, the circuit structure is too complex, the flexibility is low, and the power supply power requirement of the electronic device cannot be met.
A first aspect of an embodiment of the present application provides a charging circuit having multiple functions of rectification and power factor correction, including:
the multiplexing component is connected with an alternating current power supply and is configured to be connected with an alternating current signal output by the alternating current power supply, and the multiplexing component is used for obtaining a first direct current signal after the alternating current signal is subjected to power factor correction and rectification in sequence;
the voltage boosting component is connected with the multiplexing component and is configured to boost the first direct current signal to obtain a second direct current signal; and
and the charging assembly is connected with the multiplexing assembly and the boosting assembly and is configured to step down the second direct current signal according to the phase of the alternating current signal so as to charge the device to be charged.
In one embodiment, the multiplexing component comprises:
the circuit comprises a first thyristor, a second thyristor, a first inductor, a second inductor, a first switch tube, a second switch tube, a first capacitor, a second capacitor, a first diode and a second diode;
the anode of the first thyristor and the cathode of the second thyristor are connected to the alternating-current power supply in common, the gate of the first thyristor is used for accessing a first pulse modulation signal, and the gate of the second thyristor is used for accessing a second pulse modulation signal;
the cathode of the first thyristor and the first end of the first inductor are connected to the boosting assembly in common, and the anode of the second thyristor and the first end of the second inductor are connected to the boosting assembly in common;
the second end of the first inductor, the anode of the first diode and the first conducting end of the first switch tube are connected to the charging assembly in a common mode, the cathode of the first diode and the first end of the first capacitor are connected to the charging assembly in a common mode, and the second end of the first capacitor, the second conducting end of the first switch tube, the first conducting end of the second switch tube and the first end of the second capacitor are connected to the ground in a common mode;
a second conduction end of the second switching tube, a second end of the second inductor and a cathode of the second diode are connected to the charging assembly in a sharing mode, and an anode of the second diode and a second end of the second capacitor are connected to the charging assembly in a sharing mode;
the control end of the first switch tube is used for accessing a third pulse modulation signal, and the control end of the second switch tube is used for accessing a fourth pulse modulation signal.
In one embodiment, the first switch tube is an NPN-type transistor, and the second switch tube is an NPN-type transistor.
In one embodiment thereof, the boost assembly comprises:
a third thyristor, a fourth thyristor and a direct current power supply;
the cathode of the third thyristor is connected with the multiplexing component and the charging component, the anode of the third thyristor is connected with the anode of the direct-current power supply, the gate of the third thyristor is used for accessing a fifth pulse modulation signal, the cathode of the direct-current power supply is connected with the cathode of the fourth thyristor, the gate of the fourth thyristor is used for accessing a sixth pulse modulation signal, and the anode of the fourth thyristor is connected with the multiplexing component and the charging component.
In one embodiment thereof, the charging assembly comprises:
the third switching tube, the fourth switching tube, the fifth switching tube, the sixth switching tube, the third diode and the third inductor;
the first conducting end of the third switching tube is connected with the multiplexing component and the boosting component, and the control end of the third switching tube is used for accessing a seventh pulse modulation signal;
a first conducting end of the fourth switching tube is connected with the multiplexing component, and a control end of the fourth switching tube is used for accessing an eighth pulse modulation signal;
a second conducting end of the third switching tube, a second conducting end of the fourth switching tube and a first end of the third inductor are connected to a cathode of the third diode in common, and a second end of the third inductor is connected to a first end of the device to be charged;
the first conducting end of the fifth switching tube is connected with the multiplexing component, and the first conducting end of the sixth switching tube is connected with the boosting component and the multiplexing component;
the control end of the fifth switching tube is used for accessing a ninth pulse modulation signal, and the control end of the sixth switching tube is used for accessing a tenth pulse modulation signal;
and the second conduction end of the fifth switching tube, the second conduction end of the sixth switching tube and the second end of the device to be charged are connected to the anode of the third diode in common.
In one embodiment of the disclosure, the third switching tube is an NPN-type transistor, the fourth switching tube is an NPN-type transistor, the fifth switching tube is an NPN-type transistor, and the sixth switching tube is an NPN-type transistor.
In one embodiment, the method further comprises:
and the switch component is connected between the charging component and the equipment to be charged, is configured to be switched on or switched off according to a key signal, and outputs the second direct current signal after voltage reduction to the equipment to be charged when the switch component is switched on so as to charge the equipment to be charged.
In one embodiment, the switch assembly comprises a key switch;
the first end of the key switch is connected with the charging assembly, and the second end of the key switch is connected with the equipment to be charged.
In one embodiment, the ac power source is mains power.
A second aspect of an embodiment of the present application provides a charger, including:
the charging circuit as described above; and
and the shell is used for packaging and protecting the charging circuit.
The charging circuit with the multiplexing functions of rectification and power factor correction realizes the circuit multiplexing functions of electric energy rectification and power factor correction through the multiplexing component, reduces the use of electronic components, and has a more integrated circuit structure; meanwhile, the direct current electric energy can be subjected to self-adaptive and multifunctional regulation through the boosting assembly and the charging assembly, and voltages with various amplitudes are output to the equipment to be charged through the charging assembly so as to meet the rated charging power requirement of the equipment to be charged; therefore, the embodiment directly carries out omnibearing conversion on the alternating current energy output by the alternating current power supply, does not need to separately increase a controller, reduces the charging control cost of the equipment to be charged, simplifies the charging control process of the equipment to be charged, and has higher practical value; after the alternating current electric energy is converted by the charging circuit, high-quality electric energy can be output to the equipment to be charged, and the charging reliability and stability of the equipment to be charged are guaranteed.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a charging circuit having multiple functions of rectification and power factor correction according to an embodiment of the present application;
fig. 2 is a schematic circuit diagram of a multiplexing component according to an embodiment of the present disclosure;
fig. 3 is a schematic circuit diagram of a boosting assembly according to an embodiment of the present disclosure;
fig. 4 is a schematic circuit diagram of a charging assembly according to an embodiment of the present disclosure;
fig. 5 is a schematic diagram of an overall circuit structure of a charging circuit with multiple functions of rectification and power factor correction according to an embodiment of the present application;
fig. 6 is a schematic structural diagram of a charging circuit having multiple functions of rectification and power factor correction according to an embodiment of the present application;
fig. 7 is a schematic circuit diagram of a switch assembly according to an embodiment of the present disclosure;
fig. 8 is a schematic structural diagram of a charger according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
Referring to fig. 1, in the structural schematic diagram of the charging circuit 10 with the multiplexing functions of rectification and power factor correction provided in the embodiment of the present application, the charging circuit 10 has a simplified circuit structure, and can safely charge the device to be charged 20, and the charging circuit 10 has a low charging control cost for the device to be charged 20 and a wide application range; for convenience of explanation, only the parts related to the present embodiment are shown, and detailed as follows:
the charging circuit 10 includes: a multiplexing component 101, a boosting component 102, and a charging component 103.
The multiplexing component 101 is connected to the ac power supply, and is configured to access an ac signal output by the ac power supply, and obtain a first dc signal after performing power factor correction and rectification on the ac signal in sequence.
The alternating current power supply can output alternating current power, and various amplitude capacitor power is continuously output through the alternating current power so as to continuously supply power to the device to be charged 20; the multiplexing component 101 integrates two circuit functions of power rectification and power factor correction; it should be noted that the power factor refers to: the ratio between the active power and the total output power in the circuit; when the power factor is larger, the electric energy utilization rate in the circuit is also larger; in this embodiment, on one hand, the multiplexing component 101 performs power factor correction on the ac power, so that the multiplexing component 101 outputs more consistent dc power, thereby improving the charging efficiency and charging stability of the charging circuit 10, and after performing power factor correction on the ac signal, the utilization rate and use efficiency of the ac power are improved; on the other hand, the multiplexing component 101 rectifies the ac power in real time to supply dc power to the device to be charged 20; therefore, the multiplexing component 101 realizes the multiplexing of circuit functions, simplifies the circuit structure of the charging circuit and reduces the use number of electronic components in the circuit.
The boosting component 102 is connected to the multiplexing component 101 and configured to boost the first dc signal to obtain a second dc signal.
Wherein, the subassembly 102 that steps up has the function of stepping up, and when multiplexing subassembly 101 exported DC electric energy to the subassembly 102 that steps up, the subassembly 102 that steps up can promote the voltage of first DC signal to make the second DC signal can satisfy the actual power supply demand of treating charging equipment 20 in real time, can be to the high-efficient, nimble operation that steps up of first DC signal through the subassembly 102 that steps up.
The charging component 103 is connected to the multiplexing component 101, and the voltage boosting component 102 is connected to the device to be charged 20, and is configured to step down the second dc signal according to the phase of the ac signal to charge the device to be charged 20.
Specifically, the charging assembly 103 steps down the second dc signal according to the positive phase and the negative phase of the ac signal to perform rated charging on the device to be charged 20, so as to improve the charging safety and the charging efficiency of the device to be charged 20; because alternating current signal has high, low level regularity changes, consequently carries out the self-adaptation step-down to second direct current signal through the subassembly 103 that charges according to alternating current signal's level change law, waits that charging apparatus 20 can insert stable electric energy in real time, has promoted the work efficiency and the stability of waiting charging apparatus 20.
In the structural schematic of the charging circuit 10 shown in fig. 1, the charging circuit 10 has a relatively simplified circuit structure, and the multiplexing component 101 is used to implement multiplexing of two circuit functions of alternating current power rectification and power factor correction, so that the circuit structure is further simplified, the charging control cost is reduced, and the device to be charged 20 can always access stable power; in addition, the boosting assembly 102 and the charging assembly 103 can respectively perform boosting operation and voltage reduction operation on the first direct current signal, so that flexible and real-time adjustment on the direct current energy is realized, the charging circuit 10 performs omnibearing amplitude adjustment on the direct current energy so as to comprehensively meet the power supply power requirement of the equipment 20 to be charged, an additional controller is not required to be added, the subsequent controllability and the expansion performance of the charging circuit 10 are increased, the practical value is high, and the power supply stability and the safety of the equipment 20 to be charged are guaranteed; therefore, the problems that the charging control cost of the electronic equipment is high, the circuit structure is too complex, the function of electric energy conversion is single, and the actual rated charging power requirements of various electronic equipment cannot be met in the conventional technology are effectively solved.
As an optional implementation manner, fig. 2 shows a schematic circuit structure of the multiplexing component 101 provided in this embodiment, referring to fig. 2, the multiplexing component 101 includes a first thyristor S1, a second thyristor S2, a first inductor L1, a second inductor L2, a first switch tube M1, a second switch tube M2, a first capacitor C1, a second capacitor C2, a first diode D1, and a second diode D2.
The anode of the first thyristor S1 and the cathode of the second thyristor S2 are commonly connected to an AC power source AC1, the gate of the first thyristor S1 is used for accessing a first pulse modulation signal, and the power transmission state of the first thyristor S1 can be controlled by the first pulse modulation signal, wherein the first pulse modulation signal has different level states, and when the gate of the first thyristor S1 is accessed by the first pulse modulation signal, the first thyristor S1 can realize specific power conversion for the AC power; the gate of the second thyristor S2 is used to switch in the second pulse modulated signal.
The cathode of the first thyristor S1 and the first end of the first inductor L1 are commonly connected to the boost assembly 102, and the anode of the second thyristor S2 and the first end of the second inductor L2 are commonly connected to the boost assembly 102.
The second terminal of the first inductor L1, the anode of the first diode D1, and the first conducting terminal of the first switch Q1 are commonly connected to the charging component 103, the cathode of the first diode D2 and the first terminal of the first capacitor C1 are commonly connected to the charging component 103, and the second terminal of the first capacitor C1, the second conducting terminal of the first switch Q1, the first conducting terminal of the second switch Q2, and the first terminal of the second capacitor C2 are commonly connected to the ground GND.
The second conducting terminal of the second switch M2, the second terminal of the second inductor L2, and the cathode of the second diode D2 are commonly connected to the charging component 103, and the anode of the second diode D2 and the second terminal of the second capacitor C2 are commonly connected to the charging component 103.
The control end of the first switching tube M1 is used for accessing a third pulse modulation signal, and the control end of the second switching tube M2 is used for accessing a fourth pulse modulation signal; the third pulse modulation signal can control the first switching tube M1 to be turned on or off, and the fourth pulse modulation signal can control the second switching tube M2 to be turned on or off, so that the multiplexing component 101 combines the first switching tube M1 and the second switching tube M2 to be turned on or off, thereby realizing the electric energy conversion function.
It should be noted that the first thyristor S1 and the second thyristor S2 both belong to a silicon controlled rectifier, wherein the silicon controlled rectifier has two PN junctions, the current transmission control function can be realized by the silicon controlled rectifier, and different current transmission states can be provided between the anode and the cathode of the silicon controlled rectifier by changing the level state of the gate of the silicon controlled rectifier, so as to perform flexible conversion on electric energy.
In an optional embodiment, the first switching transistor Q1 is a transistor or a MOS transistor, and the second switching transistor Q2 is a transistor or a MOS transistor.
In a preferred embodiment, the first switch Q1 is an NPN transistor, and the second switch Q2 is an NPN transistor.
Taking the first switch tube Q1 as an example, when the first switch tube Q1 is an NPN-type triode, a base of the NPN-type triode is a control end of the first switch tube Q1, a collector of the NPN-type triode is a first conducting end of the first switch tube Q1, and an emitter of the NPN-type triode is a second conducting end of the first switch tube Q1; and then the power transmission state of the first switching tube Q1 can be sensitively adjusted through the third pulse modulation signal, so that the power control precision of the multiplexing component 101 is improved.
As an optional implementation manner, fig. 3 shows a schematic circuit structure of the boosting assembly 102 provided in this embodiment, please refer to fig. 2, in which the boosting assembly 102 includes: a third thyristor S3, a fourth thyristor S4, and a DC power supply DC 1.
The cathode of the third thyristor S3 is connected to the multiplexing component 101 and the charging component 103, the anode of the third thyristor S3 is connected to the anode of the DC power supply DC1, the gate of the third thyristor DC3 is used for receiving the fifth pulse modulation signal, the cathode of the DC power supply DC1 is connected to the cathode of the fourth thyristor S4, the gate of the fourth thyristor S4 is used for receiving the sixth pulse modulation signal, and the anode of the fourth thyristor S4 is connected to the multiplexing component 101 and the charging component 103.
Optionally, the direct current power supply DC1 is a direct current power supply of 1V to 10V, the power transmission state of the third thyristor DC3 can be controlled by the fifth pulse modulation signal, the power transmission state of the fourth thyristor S4 can be controlled by the sixth pulse modulation signal, and then the third thyristor DC3 and the fourth thyristor S4 can be combined to perform accurate ground voltage amplification on the direct current power, so that the conversion efficiency and the conversion accuracy of the first direct current signal are guaranteed.
As an optional implementation manner, fig. 4 shows a schematic circuit structure of the charging assembly 103 provided in this embodiment, referring to fig. 4, the charging assembly 103 includes a third switching tube Q3, a fourth switching tube Q4, a fifth switching tube Q5, a sixth switching tube Q6, a third diode D3, and a third inductor L3.
The first conducting end of the third switching tube Q3 is connected with the multiplexing component 101 and the boosting component 102, and the control end of the third switching tube Q3 is used for accessing a seventh pulse modulation signal; a first conducting end of the fourth switching tube Q4 is connected with the multiplexing component 101, and a control end of the fourth switching tube Q4 is used for accessing an eighth pulse modulation signal; the seventh pulse modulation signal can control the third switching tube Q3 to be turned on or off, and the eighth pulse modulation signal can control the fourth switching tube Q4 to be turned on or off, so that the transmission state of the direct current electric energy can be changed by combining the third switching tube Q3 and the fourth switching tube Q4.
The second conducting terminal of the third switch Q3, the second conducting terminal of the fourth switch Q4, and the first terminal of the third inductor L3 are connected to the cathode of the third diode D3, and the second terminal of the third inductor L3 is connected to the first terminal of the device to be charged 20.
The first conducting end of the fifth switch tube Q5 is connected with the multiplexing component 101, and the first conducting end of the sixth switch tube Q6 is connected with the boosting component 102 and the multiplexing component 101; the control end of the fifth switching tube Q5 is used for accessing a ninth pulse modulation signal, and the control end of the sixth switching tube Q6 is used for accessing a tenth pulse modulation signal; when the ninth pulse modulation signal is transmitted to the control terminal of the fifth switching tube Q5, the on-time and the off-time of the fifth switching tube Q5 can be changed by the level state of the ninth pulse modulation signal; similarly, the tenth pulse modulation signal can change the on or off state of the sixth switching tube Q6, thereby implementing efficient and flexible power-on of the device to be charged 20.
The second conducting terminal of the fifth switch Q5, the second conducting terminal of the sixth switch Q6 and the second terminal of the device to be charged 20 are connected to the anode of the third diode D3.
Illustratively, the third switching tube Q3 is a triode or a MOS transistor, the fourth switching tube Q4 is a triode or a MOS transistor, the fifth switching tube Q5 is a triode or a MOS transistor, and the sixth switching tube Q6 is a triode or a MOS transistor.
In a preferred embodiment, the third switching tube Q3 is an NPN transistor, the fourth switching tube Q4 is an NPN transistor, the fifth switching tube Q5 is an NPN transistor, and the sixth switching tube Q6 is an NPN transistor.
Taking the third switching tube Q3 as an example, when the third switching tube Q3 is an NPN-type triode, a collector of the NPN-type triode is a first conducting end of the third switching tube Q3, a base of the NPN-type triode is a control end of the third switching tube Q3, and an emitter of the NPN-type triode is a second conducting end of the third switching tube Q3; because the NPN type triode has higher current control precision, the charging assembly 103 can efficiently charge the device to be charged 20 in real time, and an electric energy adjustment error is avoided.
In order to better explain the operation principle of the charging circuit 10, a specific application scenario will be described with reference to fig. 2 to 4, wherein fig. 5 is a schematic circuit diagram of the charging circuit 10 formed by integrating fig. 2 to 4, it should be noted that fig. 5 is an exemplary circuit structure merely for technical explanation, and not a substantial limitation to the technical features of the present application, and then referring to fig. 5, the operation principle of the charging circuit 10 in this embodiment can be summarized as follows:
in fig. 5, the third capacitor C3 represents the output capacitor of the device to be charged 20, and the third capacitor C3 is charged efficiently by the charging circuit 10, so as to implement the real-time and safe power-on function of the device to be charged 20.
As shown in fig. 5, when the alternating current power output by the alternating current power source AC1 is in a positive half cycle, the third switching tube Q3 is turned off according to the seventh pulse modulation signal, the fifth switching tube Q5 is turned off according to the ninth pulse modulation signal, the sixth switching tube Q6 is turned on according to the tenth pulse modulation signal, and the fourth switching tube Q4 is turned on or off according to the level state of the eighth pulse modulation signal, so as to implement real-time transmission of the direct current signal, when the fourth switching tube Q4 is turned on, the first capacitor C1 charges the third capacitor C3 through the third inductor L3, and when the fourth switching tube Q4 is turned off, the third inductor L3 freewheels through the third diode D3, so as to implement continuous charging of the third capacitor C3, and ensure the charging efficiency of the third capacitor C3.
If the alternating current power output by the alternating current power supply AC1 is in the negative half cycle, the third switching tube Q3 is turned on according to the seventh pulse modulation signal, the sixth switching tube Q6 is turned off according to the tenth pulse modulation signal, the fourth switching tube Q4 is turned off according to the eighth pulse modulation signal, and the fifth switching tube Q5 is turned on or off according to the level state of the ninth pulse modulation signal, when the fifth switching tube Q5 is turned on, the third capacitor C3 is charged by the second capacitor C2 through the third inductor L3, and when the fifth switching tube Q5 is turned off, the third inductor L3 freewheels through the third diode D3, so that the third capacitor C3 is continuously charged, and therefore, the power-on safety and the high efficiency of the third capacitor C3 are guaranteed.
It should be noted that, referring to fig. 5, in the process that the multiplexing component 101 sequentially performs power factor correction and rectification on the ac signal, and the voltage boosting component 102 boosts the first DC signal, the voltage boosting component 102 may multiplex electronic components in the multiplexing component 101 to provide more stable electric power to the charging component 103, for example, in this example, the voltage boosting component 102 combines the third thyristor S3, the fourth thyristor S4, the DC power supply DC1, the first inductor L1, the second inductor L2, the first switch tube M1, and the second switch tube M2 to implement a DC voltage boosting function, and fig. 2 to fig. 5 are merely exemplary circuit structures, so when the charging component 103 is connected to the second DC signal, flexible control may be implemented on the second DC signal, and the electric power conversion controllability of the charging circuit 10 is improved.
According to the embodiment, when the alternating current signals have different phases, different power supply loops are formed inside the charging assembly 103 to efficiently charge the device 20 to be charged, so that the power-on safety and the power-on efficiency of the device 20 to be charged are guaranteed, each switching tube in the charging assembly 103 is controlled to be turned on or off, the double BUCK voltage reduction function is realized by combining the third inductor L3 and the third diode D3, and the third capacitor C3 can be powered on at rated power, so that the charging circuit 10 can perform multi-directional and flexible conversion on the alternating current electric energy, the charging assembly 103 can output high-quality electric energy to continuously and efficiently supply the device 20 to be charged, and the charging cost of the device 20 to be charged and the circuit structure of the charging circuit 10 are reduced.
As an alternative implementation, fig. 6 shows another structural schematic of the charging circuit 10 provided in this embodiment, and compared with the structural schematic of the charging circuit 10 shown in fig. 1, the charging circuit 10 in fig. 6 further includes: and the switch component 104 is turned on or off according to the key signal, and when the switch component 104 is turned on, the second direct current signal after voltage reduction is output to the device to be charged 20 so as to charge the device to be charged 20.
Wherein the switching component 104 is capable of being turned on or off; specifically, the key signal includes key information of the user, and the switch assembly 104 can efficiently charge the device to be charged 20 according to the charging control requirement of the user, so as to meet the charging control requirement of the user; when the switch assembly 104 is turned on according to the key signal, the charging assembly 103 can output the reduced dc power to the device to be charged 30, thereby ensuring the power-on safety and efficiency of the device to be charged 30; when the switch assembly 104 is turned off according to the key signal, the branch between the device to be charged 30 and the switch assembly 104 is disconnected, the device to be charged 30 cannot access electric energy, and the charging circuit 10 is in a stop state at this time; therefore, the charging process of the device to be charged 20 can be flexibly controlled by the switch assembly 104 in the present embodiment, the flexibility and controllability of the charging control of the charging circuit 10 are improved, the device to be charged 20 can access stable electric energy in real time, and the practical value is higher.
As an alternative implementation, fig. 7 shows a schematic circuit structure of the switch assembly 104 provided in this embodiment, and referring to fig. 7, the switch assembly 104 includes: a key switch SW 1; the first terminal of the key switch SW1 is connected to the charging assembly 103, and the second terminal of the key switch SW1 is connected to the device to be charged 20.
When the key switch SW1 receives the key signal trigger, the key switch SW1 is turned on, and the charging component 103 charges the device to be charged 20 efficiently through the key switch SW 1; when the key switch SW1 does not receive the trigger of the key signal, the key switch SW1 is turned off, and the charging assembly 103 cannot charge the device to be charged 20; therefore, the switch assembly 104 in this embodiment has a relatively simplified circuit structure, and the charging process of the device to be charged 20 is flexibly controlled by turning on or off the key switch SW1, so that the charging control procedure of the device to be charged 20 is simplified, and the charging circuit 10 can output stable electric energy to the device to be charged 20.
As an alternative embodiment, the ac power source is mains power.
Optionally, the utility power is 220V ac power, so the charging circuit 10 in this embodiment can be universally applied to various power systems, after a series of operations such as power factor correction, rectification, and amplitude adjustment are performed on the ac power output by the utility power, the charging circuit 10 can perform a safe and efficient power-on function on the device 20 to be charged, thereby improving the power utilization rate of the utility power, the charging circuit 10 can perform flexible conversion on the ac power, the charging circuit 10 integrates circuit components with various circuit functions, and the application range is very wide.
Fig. 8 shows a structural schematic diagram of the charger 80 provided in the present embodiment, and referring to fig. 8, the charger 80 includes: the charging circuit 10 and the housing 801 as described above, the housing 801 is used for packaging and protecting the charging circuit 10; optionally, the housing 801 is a plastic housing, wherein the charging circuit 10 can be prevented from being damaged or interfered by external physical damage through the housing 801, for example, the housing 801 can prevent the charging circuit 801 from being splashed or damaged physically, so that the charging circuit 10 can always maintain a safe and stable charging function; the charging circuit 10 can continuously output the electric energy to the device to be charged, and the working efficiency and the electric energy transmission stability of the charging circuit 10 are improved.
With reference to the embodiments of fig. 1 to 7, the charger 80 in this embodiment has an integrated and safe circuit structure, because the charging circuit 10 multiplexes the input rectification and power factor correction circuits of the whole device, the charging circuit 10 has a relatively simplified circuit module structure, so that the use of electronic components is reduced, which is beneficial to reducing the charging control cost and control steps of the charger 80, and the size is reduced, the charger 80 has relatively high expandability and flexibility, and the charger 80 ensures the power-on safety and power-on efficiency of the device to be controlled, which is of great significance to the safe development of the charging control of the device to be controlled; the charging circuit effectively solves the problems that the traditional charging circuit is high in control cost, complex in circuit structure, single in electric energy conversion function and low in flexibility, the whole size of the traditional charger is large, and great inconvenience is brought to users.
Various embodiments are described herein for various devices, circuits, apparatuses, systems, and/or methods. Numerous specific details are set forth in order to provide a thorough understanding of the overall structure, function, manufacture, and use of the embodiments as described in the specification and illustrated in the accompanying drawings. However, it will be understood by those skilled in the art that the embodiments may be practiced without such specific details. In other instances, well-known operations, components and elements have been described in detail so as not to obscure the embodiments in the description. It will be appreciated by those of ordinary skill in the art that the embodiments herein and shown are non-limiting examples, and thus, it can be appreciated that the specific structural and functional details disclosed herein may be representative and do not necessarily limit the scope of the embodiments.
Reference throughout the specification to "various embodiments," "in an embodiment," "one embodiment," or "an embodiment," etc., means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, appearances of the phrases "in various embodiments," "in some embodiments," "in one embodiment," or "in an embodiment," or the like, in places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. Thus, a particular feature, structure, or characteristic illustrated or described in connection with one embodiment may be combined, in whole or in part, with features, structures, or characteristics of one or more other embodiments without presuming that such combination is not an illogical or functional limitation. Any directional references (e.g., plus, minus, upper, lower, upward, downward, left, right, leftward, rightward, top, bottom, above …, below …, vertical, horizontal, clockwise, and counterclockwise) are used for identification purposes to aid the reader's understanding of the present disclosure, and do not create limitations, particularly as to the position, orientation, or use of the embodiments.
Although certain embodiments have been described above with a certain degree of particularity, those skilled in the art could make numerous alterations to the disclosed embodiments without departing from the scope of this disclosure. Joinder references (e.g., attached, coupled, connected, and the like) are to be construed broadly and may include intermediate members between a connection of elements and relative movement between elements. Thus, connection references do not necessarily imply that two elements are directly connected/coupled and in a fixed relationship to each other. The use of "for example" throughout this specification should be interpreted broadly and used to provide non-limiting examples of embodiments of the disclosure, and the disclosure is not limited to such examples. It is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative only and not limiting. Changes in detail or structure may be made without departing from the disclosure.
The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed.
Claims (10)
1. A charging circuit having a multiplexing function of rectification and power factor correction, comprising:
the multiplexing component is connected with an alternating current power supply and is configured to be connected with an alternating current signal output by the alternating current power supply, and the multiplexing component is used for obtaining a first direct current signal after the alternating current signal is subjected to power factor correction and rectification in sequence;
the voltage boosting component is connected with the multiplexing component and is configured to boost the first direct current signal to obtain a second direct current signal; and
and the charging assembly is connected with the multiplexing assembly and the boosting assembly and is configured to step down the second direct current signal according to the phase of the alternating current signal so as to charge the equipment to be charged.
2. The charging circuit of claim 1, wherein the multiplexing component comprises:
the circuit comprises a first thyristor, a second thyristor, a first inductor, a second inductor, a first switch tube, a second switch tube, a first capacitor, a second capacitor, a first diode and a second diode;
the anode of the first thyristor and the cathode of the second thyristor are connected to the alternating-current power supply in common, the gate of the first thyristor is used for accessing a first pulse modulation signal, and the gate of the second thyristor is used for accessing a second pulse modulation signal;
the cathode of the first thyristor and the first end of the first inductor are connected to the boosting assembly in common, and the anode of the second thyristor and the first end of the second inductor are connected to the boosting assembly in common;
the second end of the first inductor, the anode of the first diode and the first conducting end of the first switch tube are connected to the charging assembly in a common mode, the cathode of the first diode and the first end of the first capacitor are connected to the charging assembly in a common mode, and the second end of the first capacitor, the second conducting end of the first switch tube, the first conducting end of the second switch tube and the first end of the second capacitor are connected to the ground in a common mode;
a second conduction end of the second switching tube, a second end of the second inductor and a cathode of the second diode are connected to the charging assembly in a sharing mode, and an anode of the second diode and a second end of the second capacitor are connected to the charging assembly in a sharing mode;
the control end of the first switch tube is used for accessing a third pulse modulation signal, and the control end of the second switch tube is used for accessing a fourth pulse modulation signal.
3. The charging circuit of claim 2, wherein the first switching transistor is an NPN transistor, and the second switching transistor is an NPN transistor.
4. The charging circuit of claim 1, wherein the boost component comprises:
a third thyristor, a fourth thyristor and a direct current power supply;
the cathode of the third thyristor is connected with the multiplexing component and the charging component, the anode of the third thyristor is connected with the anode of the direct-current power supply, the gate of the third thyristor is used for accessing a fifth pulse modulation signal, the cathode of the direct-current power supply is connected with the cathode of the fourth thyristor, the gate of the fourth thyristor is used for accessing a sixth pulse modulation signal, and the anode of the fourth thyristor is connected with the multiplexing component and the charging component.
5. The charging circuit of claim 1, wherein the charging assembly comprises:
the third switching tube, the fourth switching tube, the fifth switching tube, the sixth switching tube, the third diode and the third inductor;
the first conducting end of the third switching tube is connected with the multiplexing component and the boosting component, and the control end of the third switching tube is used for accessing a seventh pulse modulation signal;
a first conducting end of the fourth switching tube is connected with the multiplexing component, and a control end of the fourth switching tube is used for accessing an eighth pulse modulation signal;
a second conducting end of the third switching tube, a second conducting end of the fourth switching tube and a first end of the third inductor are connected to a cathode of the third diode in common, and a second end of the third inductor is connected to a first end of the device to be charged;
the first conducting end of the fifth switching tube is connected with the multiplexing component, and the first conducting end of the sixth switching tube is connected with the boosting component and the multiplexing component;
the control end of the fifth switching tube is used for accessing a ninth pulse modulation signal, and the control end of the sixth switching tube is used for accessing a tenth pulse modulation signal;
and the second conduction end of the fifth switching tube, the second conduction end of the sixth switching tube and the second end of the device to be charged are connected to the anode of the third diode in common.
6. The charging circuit according to claim 5, wherein the third switching tube is an NPN transistor, the fourth switching tube is an NPN transistor, the fifth switching tube is an NPN transistor, and the sixth switching tube is an NPN transistor.
7. The charging circuit of claim 1, further comprising:
and the switch component is connected between the charging component and the equipment to be charged, is configured to be switched on or switched off according to a key signal, and outputs the second direct current signal after voltage reduction to the equipment to be charged when the switch component is switched on so as to charge the equipment to be charged.
8. The charging circuit of claim 7, wherein the switch assembly comprises a push button switch;
the first end of the key switch is connected with the charging assembly, and the second end of the key switch is connected with the equipment to be charged.
9. The charging circuit of claim 1, wherein the ac power source is mains power.
10. A charger, comprising:
a charging circuit as claimed in any one of claims 1-9; and
and the shell is used for packaging and protecting the charging circuit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922231284.6U CN210985717U (en) | 2019-12-12 | 2019-12-12 | Charging circuit and charger with rectification and power factor correction multiplexing functions |
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| CN201922231284.6U CN210985717U (en) | 2019-12-12 | 2019-12-12 | Charging circuit and charger with rectification and power factor correction multiplexing functions |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112636580A (en) * | 2020-12-08 | 2021-04-09 | 佛山市顺德区美的电子科技有限公司 | Power factor correction device and method and household appliance |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112636580A (en) * | 2020-12-08 | 2021-04-09 | 佛山市顺德区美的电子科技有限公司 | Power factor correction device and method and household appliance |
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