CN210092946U - Charging circuit - Google Patents
Charging circuit Download PDFInfo
- Publication number
- CN210092946U CN210092946U CN201920837074.9U CN201920837074U CN210092946U CN 210092946 U CN210092946 U CN 210092946U CN 201920837074 U CN201920837074 U CN 201920837074U CN 210092946 U CN210092946 U CN 210092946U
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- circuit
- resistor
- frequency transformer
- charging
- magnetic control
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a charging circuit, which comprises a charging transmitting circuit and an induction charging receiving circuit which are respectively and independently arranged, the charging emission circuit comprises a power input connector connected with commercial power, the power input connector is sequentially connected with a magnetic control switch circuit, a switch power supply PWM circuit and a high-frequency transformer primary, the inductive charging receiving circuit comprises a high-frequency transformer secondary inductively connected with a high-frequency transformer primary, the primary of the high-frequency transformer is connected with a voltage stabilizing output circuit which is provided with a magnet for controlling the conduction of the magnetic control switch circuit when the output end of the voltage reducing and stabilizing output circuit is connected with a load, through the separated high-frequency transformer, wireless charging from the AC end of the primary to the DC end of the secondary is realized, therefore, the wireless charging function is realized through the traditional switching power supply circuit, and the cost is greatly reduced.
Description
[ technical field ]
The utility model relates to a charging circuit.
[ background art ]
The existing wireless charging scheme mainly aims at portable equipment such as a mobile phone, an AC/DC power supply part is arranged in the wireless charging scheme, commercial power is converted into a low-voltage direct-current power supply, then low-voltage direct current is chopped into high-frequency square waves, the high-frequency square waves are transmitted to an induction coil of a receiving end through the induction coil, and the induced high-frequency square waves are rectified into low-voltage direct current by a receiving end circuit and used for power supply and charging of the receiving end. This is a common wireless charging architecture.
And to some household electrical appliances or lighting products, adopt wireless charging mode, can solve electric leakage problem, the contact failure problem etc. that the contact connection supplied power, also have very big market demand. However, the above-mentioned general wireless charging scheme is difficult to realize high-power charging, and the whole charging circuit is complex, and the cost of household appliances and household lighting products is unacceptable.
[ contents of utility model ]
The utility model overcomes the defects of the above technology, provides a charging circuit, and designs a non-universal simplified version high-power wireless charging circuit aiming at the characteristics of wireless charging required by household appliances and lighting products, wherein the AC/DC power supply in the original wireless charging scheme is disassembled into two, and the AC part is connected to the primary part of a high-frequency transformer and is a transmitting end; the DC part comprises a secondary part connected with a high-frequency transformer and is a receiving end; wireless charging is achieved by contactless inductive power transfer of the primary and secondary of the high frequency transformer. Conventional wireless charging circuit devices such as a charging coil and a receiving coil of an original wireless charging scheme are saved by the scheme, a wireless charging function is realized by only relying on a traditional switching power supply circuit, the cost is greatly reduced compared with the existing wireless charging circuit, the large-power wireless charging between a dozen watts and a hundred watts interval is easily expanded, and the high-power wireless charging requirement in the fields of household appliances and illumination is met.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a charging circuit, is including the transmitting circuit 1 and the induction charging receiving circuit 2 that charge that set up respectively independently, the transmitting circuit 1 that charges is including the power input joint 11 with mains connection, power input joint 11 is connected with magnetic control switch circuit 12, switching power supply PWM circuit 13, high frequency transformer in order 14, induction charging receiving circuit 2 is including the high frequency transformer secondary 21 of being connected with the primary 14 induction of high frequency transformer, high frequency transformer primary 14 is connected with steady voltage output circuit 22, step-down steady voltage output circuit 22 is equipped with the magnet that control magnetic control switch circuit 12 switched on when step-down steady voltage output circuit 22 output is connected with the load.
The load 24 is a household appliance, a storage battery or a storage battery charging circuit.
The high frequency transformer primary 14 and the high frequency transformer secondary 21 may be separated from each other.
The magnetic control switch circuit 12 comprises a silicon controlled rectifier Q3, the negative end of the silicon controlled rectifier Q3 is respectively connected with the zero line end of the power input connector 11 and one end of a resistor R17, the positive end of the silicon controlled rectifier Q3 is respectively connected with the switching power supply PWM circuit 13 and one end of a magnetic control reed switch S1, the other end of the resistor R17 is respectively connected with the control end of the silicon controlled rectifier Q3 and one end of a resistor R15, the other end of the resistor R15 is connected with the other end of the magnetic control reed switch S1, and the magnetic control reed switch S1 is controlled by a built-in magnet of the induction charging receiving circuit.
The switching power supply PWM circuit 13 comprises a switching power supply circuit and a PWM conversion chip U, a pin of the PWM conversion chip U is grounded, the pin of the PWM conversion chip U is respectively connected with one end of a capacitor C and a collector of a triode Q, the other end of the capacitor C and an emitter of the triode Q are respectively grounded, a base of the triode Q is connected with a positive terminal of a voltage stabilizing diode D, a negative terminal of the voltage stabilizing diode D is connected with the switching power supply circuit through a resistor R, the pin of the PWM conversion chip U is grounded through a voltage dependent resistor NTC, the pin of the PWM conversion chip U is respectively connected with one end of the resistor R, one end of the resistor R and a Q source terminal of an MOS field effect tube through the resistor R, the other end of the resistor R is grounded, the other end of the resistor R is respectively connected with the positive terminal of the diode D and the Q gate terminal of the MOS field effect tube, the negative terminal of the diode is connected with the pin of the PWM conversion chip U, the diode D is connected with the resistor R.
The utility model has the advantages that:
the utility model discloses a high frequency transformer of separation has realized the wireless charging from elementary AC end to secondary DC end to it is single through traditional switching power supply circuit to have realized wireless charging function, cost greatly reduced.
The utility model discloses a be provided with the magnetic control dry reed pipe formula magnetic control switch circuit inductive control power supply circuit break-make, avoided standby state's power consumptive, energy-concerving and environment-protective.
[ description of the drawings ]
Fig. 1 is a schematic structural diagram of the present invention.
[ detailed description of the invention ]
The following description is further detailed with reference to the accompanying drawings and embodiments of the present invention:
as shown in fig. 1, a charging circuit is characterized in that: including the transmitting circuit 1 and the induction charging receiving circuit 2 that charge that set up respectively independently, transmitting circuit 1 charges including the power input joint 11 with mains connection, power input joint 11 is connected with magnetic control switch circuit 12, switching power supply PWM circuit 13, the primary 14 of high frequency transformer in order, induction charging receiving circuit 2 is including the high frequency transformer secondary 21 with the primary 14 induction connection of high frequency transformer, the primary 14 of high frequency transformer is connected with steady voltage output circuit 22, step-down steady voltage output circuit 22 is equipped with the magnet that control magnetic control switch circuit 12 switched on when step-down steady voltage output circuit 22 output is connected with the load.
Wherein, the load 24 is a household appliance, a storage battery or a storage battery charging circuit.
After the output end of the voltage-reducing and voltage-stabilizing output circuit 22 is connected with a load, the magnetic control switch circuit 3 is controlled by a built-in magnet of the induction charging receiving circuit 2 to be conducted, at the moment, the commercial power sequentially passes through the power input connector 11, the magnetic control switch circuit 12 and the switch power supply PWM circuit 13, the switch power supply PWM circuit 13 cuts the commercial power AC220V into PWM waves, alternating voltage is output through the primary 14T1-1 of the high-frequency transformer, the induction voltage of the secondary 21 of the high-frequency transformer obtains stable low-voltage direct current through the voltage-reducing and voltage-stabilizing output circuit 22, and the stable low-voltage.
Wherein the high frequency transformer primary 14 and the high frequency transformer secondary 21 are separable from each other. The utility model provides a high frequency transformer is not traditional integrative structure, and its high frequency transformer is elementary 14 independently parts with high frequency transformer secondary 21, belongs to the transmitting circuit 1 and the induction charging receiving circuit 2 that charge of separation respectively. When the charging transmitting circuit 1 and the inductive charging receiving circuit 2 are placed together, the primary side 14 and the secondary side 21 of the high-frequency transformer form a complete high-frequency transformer, and the two sub-circuits form a complete switching power supply circuit, so that the charging work of the load is realized.
The magnetic control switch circuit 13 comprises a silicon controlled rectifier Q3, the negative end of the silicon controlled rectifier Q3 is respectively connected with the zero line end of the power input connector 11 and one end of a resistor R17, the positive end of the silicon controlled rectifier Q3 is respectively connected with the switch power supply PWM circuit 13 and one end of a magnetic control reed switch S1, the other end of the resistor R17 is respectively connected with the control end of the silicon controlled rectifier Q3 and one end of a resistor R15, the other end of the resistor R15 is connected with the other end of the magnetic control reed switch S1, and the magnetic control reed switch S1 is controlled by the load of a built-.
After the magnetic control switch circuit 3 induces the magnet at the load end, a magnetic control reed switch S1 in the magnetic control switch circuit 3 is closed, so that the controllable silicon Q3 is conducted, and the whole power circuit is electrified.
The switching power supply PWM circuit 13 comprises a switching power supply circuit and a PWM conversion chip U, a pin of the PWM conversion chip U is grounded, the pin of the PWM conversion chip U is respectively connected with one end of a capacitor C and a collector of a triode Q, the other end of the capacitor C and an emitter of the triode Q are respectively grounded, a base of the triode Q is connected with a positive terminal of a voltage stabilizing diode D, a negative terminal of the voltage stabilizing diode D is connected with the switching power supply circuit through a resistor R, the pin of the PWM conversion chip U is grounded through a voltage dependent resistor NTC, the pin of the PWM conversion chip U is respectively connected with one end of the resistor R, one end of the resistor R and a Q source terminal of an MOS field effect tube through the resistor R, the other end of the resistor R is grounded, the other end of the resistor R is respectively connected with the positive terminal of the diode D and the Q gate terminal of the MOS field effect tube, the negative terminal of the diode is connected with the pin of the PWM conversion chip U, the diode D is connected with the resistor R.
Claims (5)
1. A charging circuit, characterized by: including the transmitting circuit (1) and the response receiving circuit (2) that charge that set up independently respectively, transmitting circuit (1) charges including power input joint (11) with the commercial power connection, power input joint (11) are connected with magnetic control switch circuit (12), switching power supply PWM circuit (13), high frequency transformer in order (14), the response is charged receiving circuit (2) including the high frequency transformer secondary (21) of being connected with high frequency transformer primary (14) response, high frequency transformer primary (14) are connected with step-down steady voltage output circuit (22), step-down steady voltage output circuit (22) are equipped with the magnet that control magnetic control switch circuit (12) switched on when step-down steady voltage output circuit (22) output is connected with the load.
2. A charging circuit as claimed in claim 1, wherein: the load (24) is a household appliance, a storage battery or a storage battery charging circuit.
3. A charging circuit as claimed in claim 1, wherein: the primary (14) and secondary (21) of the high-frequency transformer can be separated from each other.
4. A charging circuit as claimed in claim 1, wherein: the magnetic control switch circuit (12) comprises a silicon controlled rectifier Q3, the negative end of a silicon controlled rectifier Q3 is respectively connected with the zero line end of a power input connector (11) and one end of a resistor R17, the positive end of a silicon controlled rectifier Q3 is respectively connected with a switch power supply PWM circuit (13) and one end of a magnetic control reed switch S1, the other end of a resistor R17 is respectively connected with the control end of a silicon controlled rectifier Q3 and one end of a resistor R15, the other end of the resistor R15 is connected with the other end of a magnetic control reed switch S1, and the magnetic control reed switch S1 is controlled by a built-in magnet of the induction charging receiving circuit (.
5. The charging circuit according to claim 1, wherein the switching power supply PWM circuit (13) includes a switching power supply circuit and a PWM conversion chip U, a pin of the PWM conversion chip U is grounded, a pin of the PWM conversion chip U is connected with one end of a capacitor C and a collector of a transistor Q, the other end of the capacitor C and an emitter of the transistor Q are grounded, a base of the transistor Q is connected with a positive terminal of a voltage regulator diode D, a negative terminal of the voltage regulator diode D is connected with the switching power supply circuit through a resistor R, a pin of the PWM conversion chip U is grounded through a voltage dependent resistor NTC, the pin of the PWM conversion chip U is connected with one end of the resistor R, one end of the resistor R and a source terminal of an MOS field effect transistor Q through the resistor R, the other end of the resistor R is grounded, the other end of the resistor R is connected with a positive terminal of the diode D and a gate terminal of the MOS field effect transistor Q, the negative terminal of the diode D is connected with the pin of the PWM conversion chip U, a resistor R is connected in parallel, a drain terminal of the MOS field effect transistor Q is.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920837074.9U CN210092946U (en) | 2019-06-03 | 2019-06-03 | Charging circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920837074.9U CN210092946U (en) | 2019-06-03 | 2019-06-03 | Charging circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210092946U true CN210092946U (en) | 2020-02-18 |
Family
ID=69482350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920837074.9U Expired - Fee Related CN210092946U (en) | 2019-06-03 | 2019-06-03 | Charging circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210092946U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111446515A (en) * | 2020-04-02 | 2020-07-24 | 联想(北京)有限公司 | Charging method and device and electronic equipment |
-
2019
- 2019-06-03 CN CN201920837074.9U patent/CN210092946U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111446515A (en) * | 2020-04-02 | 2020-07-24 | 联想(北京)有限公司 | Charging method and device and electronic equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200218 |