CN210957824U - AC/DC charger based on resonance and synchronous rectification topological structure - Google Patents
AC/DC charger based on resonance and synchronous rectification topological structure Download PDFInfo
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- CN210957824U CN210957824U CN201921697691.XU CN201921697691U CN210957824U CN 210957824 U CN210957824 U CN 210957824U CN 201921697691 U CN201921697691 U CN 201921697691U CN 210957824 U CN210957824 U CN 210957824U
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Abstract
The utility model discloses an AC/DC dual-purpose charger based on resonance and synchronous rectification topological structure, which comprises a battery charging interface (10), a synchronous rectification circuit (7) connected with the battery charging interface (10), a DC input circuit and an AC input circuit which are connected in parallel with the input end of the synchronous rectification circuit (7); the direct current input circuit comprises a direct current input interface (5) and a direct current filter (6) which are sequentially connected, the alternating current input circuit comprises an alternating current input interface (1), an alternating current filter (3) and a resonant topological circuit (4) which are sequentially connected, and the direct current filter (6) and the resonant topological circuit (4) are respectively connected with the synchronous rectification circuit (7). The utility model discloses a dual-purpose machine that charges of alternating current-direct current based on resonance and synchronous rectification topological structure can realize that the charge mode and the charge efficiency of a pair of many are high.
Description
Technical Field
The utility model belongs to the technical field of the battery charging, more specifically relates to an alternating current-direct current dual-purpose machine that charges based on resonance and synchronous rectification topological structure.
Background
Along with the increase of the types of military communication equipment, the types of batteries are more and more, the chargers basically correspond to the batteries one by one, and the batteries are incompatible with each other. For single-soldier portable combat, the charging mode one by one can lead to more types of the carried chargers, and is not beneficial to use in a battlefield.
The one-to-many charging mode can exactly solve the problem that the types of batteries are more, but the one-to-many charging structure suitable for single-soldier portable combat is few at present, the charging efficiency is low, the charging efficiency is high in the using process of the equipment, more using time can be strived for the equipment, and therefore the high charging efficiency is also an important index for striving for the communication time. Therefore, it is very important to design a charger that has high charging efficiency and can realize a one-to-many charging method.
SUMMERY OF THE UTILITY MODEL
Aiming at the above defects or improvement requirements of the prior art, the utility model provides an AC/DC dual-purpose charger based on resonance and synchronous rectification topological structure, which is connected with a battery charging interface after connecting a DC input circuit and an AC input circuit in parallel to a synchronous rectification circuit, on one hand, different charging power supplies of DC or AC can output DC to charge equipment, on the other hand, the charging of various batteries with different models is realized through the voltage reduction of the synchronous rectification circuit, thereby realizing a one-to-many charging mode; the filter is added, so that the quality of the charging power supply is improved, and the charging efficiency is ensured.
In order to achieve the above object, the utility model provides an alternating current-direct current dual-purpose charger based on resonance and synchronous rectification topological structure, including battery charging interface, with the synchronous rectification circuit that the battery charging interface is connected, parallel access the direct current input circuit and the alternating current input circuit of synchronous rectification circuit input end;
the direct current input circuit comprises a direct current input interface and a direct current filter which are sequentially connected, the alternating current input circuit comprises an alternating current input interface, an alternating current filter and a resonant topological circuit which are sequentially connected, and the direct current filter and the resonant topological circuit are respectively connected with the synchronous rectification circuit.
The synchronous rectification circuit comprises a synchronous rectification circuit, a state detection circuit and a controller, wherein the synchronous rectification circuit is connected with the synchronous rectification circuit, one end of the synchronous rectification circuit is connected with the synchronous rectification circuit, and the other end of the synchronous rectification circuit is connected with the controller.
Further, the controller comprises a single chip microcomputer, a peripheral extension circuit, a power supply filter capacitor and an analog-to-digital conversion interface.
Further, the state detection circuit comprises a current sampling resistor connected with the synchronous rectification circuit and an operational amplifier connected with the controller.
Furthermore, a communication circuit is arranged between the battery charging interface and the controller.
Further, the communication circuit is connected with the controller in a bidirectional mode and is provided with a high-speed optical coupler.
Furthermore, still include electric quantity indicating lamp group and mode indicating lamp group, electric quantity indicating lamp group includes 4 and above led electric quantity indicating lamps.
Furthermore, a power factor correction circuit is arranged between the alternating current input interface and the alternating current filter.
Generally, through the utility model discloses above technical scheme who conceives compares with prior art, can gain following beneficial effect:
(1) the utility model discloses based on resonance and synchronous rectification topological structure's dual-purpose machine of charging of alternating current-direct current, through with direct current input circuit and exchange input circuit parallelly connected access to synchronous rectification circuit after be connected with the battery interface that charges, realized on the one hand that direct current or the different charging source of alternating current homoenergetic export the direct current electricity and charge equipment, on the other hand realizes the charging to various different model batteries through the step-down of synchronous rectification circuit to realize the charge mode of one-to-many; the filter is added, so that the quality of the charging power supply is improved, and the charging efficiency is ensured.
(2) The utility model discloses dual-purpose machine that charges of alternating current-direct current based on resonance and synchronous rectification topological structure sets up state detection circuit and controller, thereby feeds back to its suitable electric current of output of controller adjustment through the size of the electric current of current sampling resistance detection synchronous rectification circuit output, realizes high-efficient charging.
(3) The utility model discloses dual-purpose machine that charges of alternating current-direct current based on resonance and synchronous rectification topological structure sets up communication circuit between battery charging interface and controller, thereby communication circuit is used for the model feedback of detecting the battery to the electric current of the suitable size of controller control synchronous rectification circuit output.
Drawings
Fig. 1 is a schematic diagram of an ac/dc charger based on a resonant and synchronous rectification topology structure in an embodiment of the present invention;
fig. 2 is a schematic diagram of a man-machine interaction structure in an embodiment of the present invention.
In all the figures, the same reference numerals denote the same features, in particular: 1-alternating current input interface, 2-power factor correction circuit, 3-alternating current filter, 4-resonance topological circuit, 5-direct current input interface, 6-direct current filter, 7-synchronous rectification circuit, 8-man-machine interaction structure, 9-controller, 10-battery charging interface, 11-state detection circuit and 12-communication circuit; 801-power indicator light, 802-operating mode indicator light, 803-mode switch button.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention. Furthermore, the technical features mentioned in the embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
Fig. 1 is a schematic diagram of the ac/dc charger based on the resonant and synchronous rectification topology structure in the embodiment of the present invention. As shown in fig. 1, the utility model discloses a dual-purpose machine that charges of alternating current-direct current includes alternating current input interface 1, alternating current filter 3, resonance topology circuit 4, direct current input interface 5, direct current filter 6, synchronous rectification circuit 7 and battery charge interface 10, and the input interface and the synchronous rectification circuit 7 of battery charge interface 10 are connected, and the input interface and the equipment or the battery that need charge of battery charge interface 10 are connected for supply power for equipment or battery.
The input end of the synchronous rectification circuit 7 is connected with a direct current input circuit and an alternating current input circuit in parallel, the direct current input circuit comprises a direct current input interface 5 and a direct current filter 6, the direct current input interface 5, the direct current filter 6 and the synchronous rectification circuit 7 are sequentially connected, the direct current input interface 5 is connected with a direct current power supply, and the direct current is filtered by the direct current filter 6 and then is connected to the synchronous rectification circuit 7; the alternating current input circuit comprises an alternating current input interface 1, an alternating current filter 3 and a synchronous topological circuit 4 which are sequentially connected, the resonant topological circuit 4 is connected with a synchronous rectification circuit 7, the alternating current input interface 1 is connected with an alternating current power supply, the alternating current filter 3 is used for filtering alternating current, the synchronous resonant topological circuit 4 is used for converting the alternating current into direct current, a plurality of resonant topological structures for converting the alternating current into the direct current are arranged in the prior art, and the scheme of the utility model can be realized as long as the resonant topological structure for converting the alternating current into the direct current can be realized; preferably, the present invention selects a resonant topology that converts alternating current to 32V direct current.
The synchronous rectification circuit 7 is used for performing voltage reduction on processed input in the direct current input circuit and the alternating current input circuit, and is connected with the battery charging interface 10 after voltage reduction, so that a proper and safe charging power supply is provided for equipment needing to be charged. Direct current input circuit and alternating current input circuit are connected the back with synchronous rectifier circuit 7 and are connected with battery interface 10 that charges in through this scheme, realize no matter under the circumstances that has direct current power supply or alternating current power supply, and no matter under the circumstances of what power of voltage (synchronous rectifier circuit 7 can drop to a suitable voltage with different mains voltage), can both pass through the utility model discloses a dual-purpose machine that charges. Preferably, a PWM (Pulse-Width Modulation) wave generator, a field effect transistor, a power transformer, a filter capacitor and a main power circuit are arranged in the synchronous rectification circuit 7; the field effect transistor is used as a rectifier tube, and the rectified output voltage of the field effect transistor is connected with a large filter capacitor to reduce output voltage ripples.
Preferably, the ac input circuit is further provided with a power factor correction circuit (PFC)2, wherein the power factor correction circuit 2 is configured to adjust the phase characteristics of the voltage and the current of the electrical appliance, because the current of the inductive load lags the applied voltage, and the load on the power supply line is increased due to the difference between the phases of the voltage and the current, so as to reduce the efficiency of the power supply line. The power factor correction circuit 2 is provided between the ac input interface 1 and the ac filter 3.
Preferably, the utility model discloses still be equipped with display control device, control display device includes state detection circuitry 11, controller 9, human-computer interaction structure 8 and communication circuit 12, and state detection circuitry 11 includes current sampling resistance and operational amplifier, and the controller includes singlechip, peripheral expander circuit, power supply filter capacitance and analog-to-digital conversion interface. Current sampling resistance is connected with synchronous rectification circuit 7, a size for detect the electric current of sampling synchronous rectification circuit 7 output, analog-to-digital conversion interface connection on operational amplifier and the controller, operational amplifier adopts the electric current signal of resistance collection to amplify the processing after and send the people to the controller, convert electric current signal into digital signal through the analog-to-digital conversion interface, then judge by the controller and handle, adjust output current's size according to the electric current condition that detects promptly, the singlechip setting of adjusting processing output current size according to the detection electric current condition is mature technique among the prior art, not the utility model discloses the content of protection, technical staff in the field obtain this kind of monolithic structure that detects feedback and adjust very easily.
One end of the communication circuit 12 is unidirectionally connected with the battery charging interface 10, a signal of the battery charging interface 10 is input into the communication circuit 12, the other end of the communication circuit is bidirectionally connected with the controller 9, a high-speed optical coupler is arranged in the communication circuit 12, and the optical coupler is used for signal isolation to prevent external instantaneous overvoltage from damaging the controller 9; preferably, the communication circuit is a 1-Wire communication circuit, which is a simple signal transmission circuit, half-duplex two-way communication between the master controller and one or more slave devices can be realized through a common data line, and the battery model information and the current electric quantity are read through the 1-Wire communication circuit and fed back to the controller 9.
Fig. 2 is a schematic diagram of a man-machine interaction structure in an embodiment of the present invention. As shown in fig. 2, the human-computer interaction structure 8 is a display input structure, and includes an electric quantity indicating lamp group, a mode indicating lamp group and a mode switching button 803, the electric quantity indicating lamp group includes 4 or more led electric quantity indicating lamps 801, and each lamp corresponds to different electric quantities for displaying the current electric quantity of the battery; the mode indicating lamp group comprises 3 led power indicating lamps 802 for indicating the current working state (standard, fast, maintenance).
Preferably, the electric quantity indicator lamp adopts a green led indicator lamp, and the mode indication adopts a red led indicator lamp.
It will be understood by those skilled in the art that the foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included within the scope of the present invention.
Claims (8)
1. The AC/DC dual-purpose charger is characterized by comprising a battery charging interface (10), a synchronous rectification circuit (7) connected with the battery charging interface (10), a DC input circuit and an AC input circuit, wherein the DC input circuit and the AC input circuit are connected to the input end of the synchronous rectification circuit (7) in parallel;
the direct current input circuit comprises a direct current input interface (5) and a direct current filter (6) which are sequentially connected, the alternating current input circuit comprises an alternating current input interface (1), an alternating current filter (3) and a resonant topological circuit (4) which are sequentially connected, and the direct current filter (6) and the resonant topological circuit (4) are respectively connected with the synchronous rectification circuit (7).
2. The AC/DC charger based on the resonant and synchronous rectification topology structure as claimed in claim 1, further comprising a state detection circuit (11) and a controller (9) connected to the synchronous rectification circuit (7), wherein one end of the state detection circuit (11) is connected to the synchronous rectification circuit (7) and the other end is connected to the controller (9).
3. The ac-dc charger based on resonance and synchronous rectification topology according to claim 2, characterized in that the controller (9) comprises a single chip, a peripheral expansion circuit, a power supply filter capacitor and an analog-to-digital conversion interface.
4. The charger according to claim 3, wherein said state detection circuit (11) comprises a current sampling resistor connected to said synchronous rectification circuit (7) and an operational amplifier connected to said controller (9).
5. The AC/DC charger according to any one of claims 2 to 4, wherein a communication circuit (12) is arranged between the battery charging interface (10) and the controller (9).
6. The charger according to claim 5, characterized in that said communication circuit (12) is connected to said controller (9) in both directions and is provided with a high speed optocoupler.
7. The AC/DC charger according to claim 1, further comprising a power indicator light group and a mode indicator light group, wherein the power indicator light group comprises 4 or more led power indicator lights (801).
8. The ac-dc charger based on resonance and synchronous rectification topology according to claim 1, characterized in that a power factor correction circuit (2) is arranged between the ac input interface (1) and the ac filter (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921697691.XU CN210957824U (en) | 2019-10-11 | 2019-10-11 | AC/DC charger based on resonance and synchronous rectification topological structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921697691.XU CN210957824U (en) | 2019-10-11 | 2019-10-11 | AC/DC charger based on resonance and synchronous rectification topological structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210957824U true CN210957824U (en) | 2020-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921697691.XU Active CN210957824U (en) | 2019-10-11 | 2019-10-11 | AC/DC charger based on resonance and synchronous rectification topological structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210957824U (en) |
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- 2019-10-11 CN CN201921697691.XU patent/CN210957824U/en active Active
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