CN209805433U - Charging circuit and device - Google Patents
Charging circuit and device Download PDFInfo
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- CN209805433U CN209805433U CN201821937201.4U CN201821937201U CN209805433U CN 209805433 U CN209805433 U CN 209805433U CN 201821937201 U CN201821937201 U CN 201821937201U CN 209805433 U CN209805433 U CN 209805433U
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
a charging circuit and device comprises a power supply module for providing initial voltage; the conversion module is connected with the power supply module and used for identifying the port type of the charged equipment, adjusting the initial voltage and outputting optimized voltage; the detection module is connected with the conversion module and used for detecting the optimized voltage; and the output module is connected with the conversion module and used for receiving the optimized voltage and outputting the optimized voltage to the charged equipment. The charging circuit and the charging device identify the type of the port of the accessed charged equipment through the conversion module, correspondingly adjust the voltage according to the type of the port of the charged equipment, convert the initial voltage into the optimized voltage meeting the requirement of the charged equipment, and output and supply the optimized voltage to the charged equipment for charging; and meanwhile, detecting the value of the optimized voltage in real time through a detection module. Therefore, the utility model provides a charging circuit and device charge efficiency is high, and the security is high.
Description
Technical Field
the utility model belongs to the technical field of power supply circuit, especially, relate to a charging circuit and device.
Background
At present, the traditional charging circuit only has the function of providing charging current for the charged equipment, but cannot adjust the magnitude of the charging current according to the charging requirements of different connected charged equipment, and the charging efficiency is low; and because the current in the traditional charging circuit can not be detected in real time, the safety is low.
therefore, the conventional charging circuit has the problems of low charging efficiency and low safety due to the fact that the magnitude of the charging current cannot be adjusted and the current in the circuit cannot be detected in real time.
disclosure of Invention
In view of this, the embodiment of the utility model provides a charging circuit and device aims at solving the problem that charging efficiency is low and the security is low that exists among the traditional technical scheme.
The utility model provides a first aspect of the embodiment provides a charging circuit, include:
The conversion module is connected with the power supply module and used for identifying the port type of the charged equipment, converting the initial voltage provided by the power supply module and outputting optimized voltage;
the output module is connected with the conversion module and used for receiving the optimized voltage and outputting the optimized voltage to the charged equipment; and
And the detection module is connected with the conversion module and used for detecting the optimized voltage.
Optionally, the conversion module includes:
a conversion chip and a sampling resistor;
The electric signal input end and the enabling end of the conversion chip are connected with the power supply module, and the electric signal output end, the first data signal end and the second data signal end are connected with the output module; the sampling resistor is connected in series with a connecting line of the electric signal output end and the output module.
Optionally, the conversion module further includes:
The circuit comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a first capacitor and a second capacitor;
the first resistor, the second resistor and the third resistor are connected in series between the reset end of the conversion chip and a power ground; the fourth resistor is connected in series with the lead-out wire of the enabling end; the first end of the fifth resistor is connected with the enabling end, and the second end of the fifth resistor is grounded; the first capacitor and the second capacitor are connected between the electric signal output end and the power ground in parallel.
Optionally, the detection module includes:
The operational amplifier comprises an operational amplifier chip, a first magnetic bead, a third capacitor and a fourth capacitor;
the positive phase input end and the negative phase input end of the operational amplifier chip are connected with the conversion module, the first magnetic beads are connected in series with a lead-out wire of the power input end of the operational amplifier chip, and the third capacitor and the fourth capacitor are connected between the power input end and a power ground in parallel.
optionally, the output module includes:
The plug connector, a fifth capacitor, a sixth capacitor and a seventh capacitor;
The electric signal receiving end, the first data communication end and the second data communication end of the patch connector are connected with the conversion module; the fifth capacitor, the sixth capacitor and the seventh capacitor are connected in parallel between the electrical signal receiving end and a power ground.
optionally, the port types include a Mini USB port, a Micro USB port, a Type-C port, and a Lighting port.
A second aspect of the embodiments provides a charging device, include charging circuit still includes power module.
Optionally, the power supply module includes:
The current-limiting circuit comprises a direct current converter, a second magnetic bead, a sixth resistor, a seventh resistor, an eighth capacitor and a ninth capacitor;
the voltage output end and the work enabling end of the direct current converter are connected with the conversion module; the first end of the second magnetic bead is connected with a direct-current power supply, and the second end of the second magnetic bead is connected with the voltage input end of the direct-current converter; the eighth capacitor and the ninth capacitor are connected between the voltage output end of the direct current converter and the power ground in parallel; the first end of the sixth resistor is connected with the voltage regulating end of the direct current converter, and the second end of the sixth resistor is grounded; the first end of the seventh resistor is connected with a reference power supply, and the second end of the seventh resistor is connected with the work enabling end of the direct current converter; and the eighth resistor is connected in series with the lead-out wire of the work enabling end.
optionally, the dc converter is implemented by using a dc conversion chip configured to perform voltage conversion on the dc power supply.
The charging circuit and the charging device identify the type of the port of the accessed charged equipment through the conversion module, correspondingly adjust the voltage according to the type of the port of the charged equipment, convert the initial voltage into the optimized voltage meeting the requirement of the charged equipment, and output and supply the optimized voltage to the charged equipment for charging; and meanwhile, detecting the value of the optimized voltage in real time through a detection module. Therefore, the utility model provides a charging circuit and device charge efficiency is high, and the security is high.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.
fig. 1 is a schematic structural diagram of a charging circuit according to an embodiment of the present invention;
Fig. 2 is an exemplary circuit schematic of the charging circuit shown in fig. 1.
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 merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, a schematic diagram of a charging circuit according to an embodiment of the present invention shows only the relevant portions of the embodiment for convenience of description, and the detailed description is as follows:
a charging circuit, comprising: the device comprises a power supply module 10, a conversion module 20, a detection module 30 and an output module 40.
The conversion module 20 is connected to the power supply module 10, and is configured to identify a port type of the device to be charged, adjust the initial voltage, and output an optimized voltage.
The detection module 30 is connected to the conversion module 20 for detecting the optimized voltage.
The output module 40 is connected to the converting module 20, and is configured to receive the optimized voltage and output the optimized voltage to the charged device.
The charging circuit identifies the port type of the accessed charged device through the conversion module 20, correspondingly adjusts the voltage according to the port type of the charged device, converts the initial voltage into an optimized voltage meeting the requirement of the charged device, and outputs and supplies the optimized voltage to the charged device for charging; meanwhile, the value of the optimized voltage is detected in real time by the detection module 30. Therefore, the utility model provides a charging circuit charge efficiency is high, and the security is high.
In an optional embodiment, the utility model discloses the recognizable port Type of conversion module includes Mini USB port, Micro USB port, Type-C port and Lighting port at least.
Fig. 2 is a schematic circuit diagram of an example of the charging circuit shown in fig. 1. For convenience of explanation, only the parts related to the present embodiment are shown, and detailed as follows:
in an alternative embodiment, the conversion module 20 includes a conversion chip U5 and a sampling resistor R0. An electrical signal input end (denoted by VIN in FIG. 2) and an enable end (denoted by ENB in FIG. 2) of the conversion chip U5 are connected to the power supply module 10, and an electrical signal output end (denoted by OUT in FIG. 2), a first data signal end (denoted by DM in FIG. 2) and a second data signal end (denoted by DP in FIG. 2) are connected to the output module 40; the sampling resistor R0 is connected in series with the connection line between the electrical signal output terminal and the output module 40.
an electrical signal input end and an enable end of the conversion chip U5 are connected to the power supply module 10, wherein the electrical signal input end is used for receiving an initial voltage output by the power supply module 10, the enable end is used for receiving an enable voltage output by the power supply module 10, and when the enable voltage reaches a preset threshold, the conversion chip U5 starts to operate. The electrical signal output end is connected to the output module 40 and is used for outputting the optimized voltage to the output module 40, so that the output module 40 supplies the optimized voltage to the accessed charged device. The first data signal terminal and the second data signal terminal are connected to the output module 40, and are configured to detect a port type of a charged device connected to the output module 40, so that the conversion chip U5 adjusts an input initial voltage according to the identified port type information, and outputs an optimized voltage.
The conversion chip U5 adopts a USB current-limiting switch chip with the model UC2501, which integrates a USB charger emulator and has an automatic host charger identification circuit and an adjustable current-limiting power switch, wherein the automatic host charger identification circuit can identify the port type of the accessed charged device and can perform automatic conversion of the current-limiting power switch, thereby adjusting the input initial voltage and outputting an optimized voltage for charging the accessed charged device. In specific application, the utility model provides an at least distinguishable port Type of conversion chip U5 includes Mini USB port, Micro USB port, Type-C port and Lighting port.
the sampling resistor R0 has a resistance of 0.01 ohms. Sampling resistor R0 sets up on the connecting wire of signal of telecommunication output end and output module 40, and detection module 30 carries out voltage sampling altogether to the value of real-time detection optimization voltage ensures charging circuit's security, in order to avoid optimizing voltage and can't in time discover when unusual, leads to damaging charging circuit and access circuit by the battery charging outfit.
In an optional embodiment, the conversion module 20 further includes a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a first capacitor C1, and a second capacitor C2. The first resistor R1, the second resistor R2 and the third resistor R3 are connected in series between the reset terminal (RSET in FIG. 2) of the conversion chip U5 and the power ground; the fourth resistor R4 is connected in series with the lead-out wire of the enabling end; a first end of the fifth resistor R5 is connected with an enabling end, and a second end is grounded; the first capacitor C1 and the second capacitor C2 are connected in parallel between the electrical signal output terminal and the power ground.
The resistance value of the first resistor R1 is 330 ohms, the resistance value of the second resistor is 10 kilo-ohms, the resistance value of the fourth resistor R4 is 330 ohms, and the resistance value of the fifth resistor R5 is 10 kilo-ohms; the capacitance of the first capacitor C1 is 10 microfarads, and the capacitance of the second capacitor C2 is 0.1 microfarads. The first capacitor C1 and the second capacitor C2 are decoupling capacitors, and are disposed between the electrical signal output terminal of the converting chip U5 and a power ground for filtering high-frequency interference signals existing in the output optimized voltage. In a specific application, the first capacitor C1 and the second capacitor C2 are ceramic capacitors, and they should be disposed as close to the converting chip U5 as possible.
In an optional embodiment, the detection module 30 includes an operational amplifier chip U3, a first magnetic bead FB1, a third capacitor C3, and a fourth capacitor C4. The non-inverting input terminal (denoted by IN + IN fig. 2) and the inverting input terminal (denoted by IN-IN fig. 2) of the operational amplifier chip U3 are connected to the conversion module 20, the first magnetic bead FB1 is connected IN series to the outgoing line of the power input terminal (denoted by Vin IN fig. 2) of the operational amplifier chip U3, and the third capacitor C3 and the fourth capacitor C4 are connected IN parallel between the power input terminal and the power ground.
the model of the operational amplifier chip U3 is INA199A1, the capacitance value of the third capacitor C3 is 10 microfarads, the capacitance value of the fourth capacitor C4 is 0.1 microfarads, the impedance of the first magnetic bead FB1 is 600 ohms, and the working frequency is 100 MHz.
The normal phase input end and the reverse phase input end of the operational amplifier chip U3 are connected to the conversion module 20, specifically, connected to both ends of the sampling resistor R0, and are configured to detect a voltage drop signal across the sampling resistor R0 and output the voltage drop signal to the single chip microcomputer from a voltage drop output end (indicated by Out in fig. 2) of the operational amplifier chip U3, and the single chip microcomputer calculates a corresponding current signal according to the voltage drop signal, thereby completing the detection.
the power supply input end of the operational amplifier chip U3 inputs 3.3V voltage for the operational amplifier chip U3 to work normally. The first magnetic bead FB1, the third capacitor C3 and the fourth capacitor C4 are used for suppressing and filtering high-frequency interference signals existing in the voltage input to the operational amplifier chip U3 and protecting the operational amplifier chip U3.
In an alternative embodiment, the output module 40 includes a connector J3, a fifth capacitor C5, a sixth capacitor C6, and a seventh capacitor C7. The electrical signal receiving end (VBUS in fig. 2), the first data communication end (DM 1 in fig. 2) and the second data communication end (DP 1 in fig. 2) of the patch connector J3 are connected to the conversion module 20; the fifth capacitor C5, the sixth capacitor C6 and the seventh capacitor C7 are connected in parallel with each other between the electrical signal receiving terminal and the power ground.
Specifically, connect the electrical signal receiving end of plug-in connector J3 and connect the electrical signal output of conversion module 20 for receive the optimized voltage that conversion module 20 exported, first data communication end and second data communication end connect the first data signal end and the second data signal end of conversion module 20 respectively, with realize the data transmission between output module 40 and the conversion module 20 the utility model discloses in, especially, be used for transmitting the port type information of the equipment of being charged who inserts output module 40.
In specific application, the connector J3 adopts a straight needle type connector with the model number of 5569-4A2, the capacitance value of the fifth capacitor C5 is 10 microfarads, the capacitance value of the sixth capacitor C6 is 0.1 microfarads, the seventh capacitor C7 is a polar capacitor with the capacitance value of 100 microfarads, the positive electrode of the polar capacitor is connected with an electric signal receiving end, and the negative electrode of the polar capacitor is grounded.
A second aspect of the embodiments of the present invention provides a charging device, including the above charging circuit, further including a power supply module 10.
In an optional embodiment, the power supply module 10 includes a dc converter U12, a second magnetic bead FB2, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, an eighth capacitor C8, and a ninth capacitor C9. The voltage output end (denoted by VO + in fig. 2) and the work enable end (denoted by EN in fig. 2) of the dc converter U12 are connected to the conversion module 20; a first end of the second magnetic bead FB2 is connected to a dc power supply, and a second end thereof is connected to a voltage input end (denoted by VIN + in fig. 2) of the dc converter U12; the eighth capacitor C8 and the ninth capacitor C9 are connected in parallel between the voltage output end of the dc converter U12 and the power ground; a first end of the sixth resistor R6 is connected to a voltage regulation end (represented by TRIM in fig. 2) of the dc converter U12, and a second end is grounded; a first end of the seventh resistor R7 is connected with a reference power supply, and a second end is connected with an operation enabling end of the direct current converter U12; the eighth resistor R8 is connected in series with the outgoing line of the work enabling end.
The voltage output end and the work enabling end of the dc converter U12 are connected to the conversion module 20, which specifically includes: the voltage output end is connected with the electrical signal input end of the conversion module 20 and is used for outputting initial voltage; the operation enable terminal is connected to the enable terminal of the conversion module 20, and a fourth resistor R4 and an eighth resistor R8 are connected between the two terminals in series. The first end of the seventh resistor R7 is connected to a reference power supply, the second end is connected to the operation enable end of the dc converter U12, and the reference power supply provides an enable voltage to the enable end of the conversion chip U5 and the operation enable end of the dc converter U12, so that the conversion chip U5 and the dc converter U12 operate.
In a specific application, the dc converter U12 is implemented by a dc conversion chip configured to convert a dc power source into a reference power source; in one embodiment, the dc converter U12 is configured to convert a 28 volt dc power supply to a 5 volt dc power supply. The impedance of the second magnetic bead FB2 is 600 ohms, and the operating frequency is 100 mhz, so as to suppress high-frequency interference signals existing in the voltage input to the dc converter U12 and protect the dc converter U12. The capacitance of the eighth capacitor C8 is 10 microfarads, and the capacitance of the ninth capacitor C9 is 0.1 microfarads. In a specific application, the eighth capacitor C8 and the ninth capacitor C9 are ceramic capacitors, and both capacitors should be disposed as close to the dc converter U12 as possible.
In summary, the charging circuit and the charging apparatus identify the port type of the accessed device to be charged through the conversion module 20, correspondingly adjust the voltage according to the port type of the device to be charged, convert the initial voltage into the optimized voltage meeting the requirement of the device to be charged, and output and supply the optimized voltage to the device to be charged; meanwhile, the value of the optimized voltage is detected in real time by the detection module 30. Therefore, the utility model provides a charging circuit and device charge efficiency is high, and the security is high.
various embodiments are described herein for various devices and circuits. 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.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. a charging circuit, comprising:
the conversion module is connected with the power supply module and used for identifying the port type of the charged equipment, converting the initial voltage provided by the power supply module and outputting optimized voltage;
The output module is connected with the conversion module and used for receiving the optimized voltage and outputting the optimized voltage to the charged equipment; and
and the detection module is connected with the conversion module and used for detecting the optimized voltage.
2. The charging circuit of claim 1, wherein the conversion module comprises:
A conversion chip and a sampling resistor;
The electric signal input end and the enabling end of the conversion chip are connected with the power supply module, and the electric signal output end, the first data signal end and the second data signal end are connected with the output module; the sampling resistor is connected in series with a connecting line of the electric signal output end and the output module.
3. The charging circuit of claim 2, wherein the conversion module further comprises:
The circuit comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a first capacitor and a second capacitor;
The first resistor, the second resistor and the third resistor are connected in series between the reset end of the conversion chip and a power ground; the fourth resistor is connected in series with the lead-out wire of the enabling end; the first end of the fifth resistor is connected with the enabling end, and the second end of the fifth resistor is grounded; the first capacitor and the second capacitor are connected between the electric signal output end and the power ground in parallel.
4. The charging circuit of claim 1, wherein the detection module comprises:
The operational amplifier comprises an operational amplifier chip, a first magnetic bead, a third capacitor and a fourth capacitor;
The positive phase input end and the negative phase input end of the operational amplifier chip are connected with the conversion module, the first magnetic beads are connected in series with a lead-out wire of the power input end of the operational amplifier chip, and the third capacitor and the fourth capacitor are connected between the power input end and a power ground in parallel.
5. The charging circuit of claim 1, wherein the output module comprises:
the plug connector, a fifth capacitor, a sixth capacitor and a seventh capacitor;
The electric signal receiving end, the first data communication end and the second data communication end of the patch connector are connected with the conversion module; the fifth capacitor, the sixth capacitor and the seventh capacitor are connected in parallel between the electrical signal receiving end and a power ground.
6. the charging circuit of claim 1, wherein the port types include a Mini USB port, a Micro USB port, a Type-C port, and a Lighting port.
7. a charging device comprising the charging circuit of any one of claims 1 to 6, and further comprising the power supply module.
8. The charging device of claim 7, wherein the power supply module comprises:
the current-limiting circuit comprises a direct current converter, a second magnetic bead, a sixth resistor, a seventh resistor, an eighth capacitor and a ninth capacitor;
The voltage output end and the work enabling end of the direct current converter are connected with the conversion module; the first end of the second magnetic bead is connected with a direct-current power supply, and the second end of the second magnetic bead is connected with the voltage input end of the direct-current converter; the eighth capacitor and the ninth capacitor are connected between the voltage output end of the direct current converter and the power ground in parallel; the first end of the sixth resistor is connected with the voltage regulating end of the direct current converter, and the second end of the sixth resistor is grounded; the first end of the seventh resistor is connected with a reference power supply, and the second end of the seventh resistor is connected with the work enabling end of the direct current converter; and the eighth resistor is connected in series with the lead-out wire of the work enabling end.
9. The charging device of claim 8, wherein the dc converter is implemented using a dc conversion chip configured to voltage convert the dc power source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821937201.4U CN209805433U (en) | 2018-11-22 | 2018-11-22 | Charging circuit and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821937201.4U CN209805433U (en) | 2018-11-22 | 2018-11-22 | Charging circuit and device |
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| CN209805433U true CN209805433U (en) | 2019-12-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111211597A (en) * | 2020-01-19 | 2020-05-29 | 浙江明鹏新能源科技有限公司 | Portable charger, control method and storage medium |
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- 2018-11-22 CN CN201821937201.4U patent/CN209805433U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111211597A (en) * | 2020-01-19 | 2020-05-29 | 浙江明鹏新能源科技有限公司 | Portable charger, control method and storage medium |
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